diff options
Diffstat (limited to 'drivers/usb/otg')
| -rw-r--r-- | drivers/usb/otg/Kconfig | 141 | ||||
| -rw-r--r-- | drivers/usb/otg/Makefile | 24 | ||||
| -rw-r--r-- | drivers/usb/otg/ab8500-usb.c | 596 | ||||
| -rw-r--r-- | drivers/usb/otg/fsl_otg.c | 1183 | ||||
| -rw-r--r-- | drivers/usb/otg/fsl_otg.h | 406 | ||||
| -rw-r--r-- | drivers/usb/otg/gpio_vbus.c | 416 | ||||
| -rw-r--r-- | drivers/usb/otg/isp1301_omap.c | 1656 | ||||
| -rw-r--r-- | drivers/usb/otg/msm_otg.c | 1762 | ||||
| -rw-r--r-- | drivers/usb/otg/mv_otg.c | 923 | ||||
| -rw-r--r-- | drivers/usb/otg/mv_otg.h | 165 | ||||
| -rw-r--r-- | drivers/usb/otg/mxs-phy.c | 211 | ||||
| -rw-r--r-- | drivers/usb/otg/nop-usb-xceiv.c | 181 | ||||
| -rw-r--r-- | drivers/usb/otg/otg.c | 474 | ||||
| -rw-r--r-- | drivers/usb/otg/otg_fsm.c | 348 | ||||
| -rw-r--r-- | drivers/usb/otg/otg_fsm.h | 154 | ||||
| -rw-r--r-- | drivers/usb/otg/twl4030-usb.c | 728 | ||||
| -rw-r--r-- | drivers/usb/otg/twl6030-usb.c | 446 | ||||
| -rw-r--r-- | drivers/usb/otg/ulpi.c | 283 | ||||
| -rw-r--r-- | drivers/usb/otg/ulpi_viewport.c | 80 |
19 files changed, 0 insertions, 10177 deletions
diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig deleted file mode 100644 index 37962c99ff1..00000000000 --- a/drivers/usb/otg/Kconfig +++ /dev/null @@ -1,141 +0,0 @@ -# -# USB OTG infrastructure may be needed for peripheral-only, host-only, -# or OTG-capable configurations when OTG transceivers or controllers -# are used. -# - -comment "OTG and related infrastructure" - -config USB_OTG_UTILS - bool - help - Select this to make sure the build includes objects from - the OTG infrastructure directory. - -if USB || USB_GADGET - -# -# USB Transceiver Drivers -# -config USB_GPIO_VBUS - tristate "GPIO based peripheral-only VBUS sensing 'transceiver'" - depends on GENERIC_GPIO - select USB_OTG_UTILS - help - Provides simple GPIO VBUS sensing for controllers with an - internal transceiver via the usb_phy interface, and - optionally control of a D+ pullup GPIO as well as a VBUS - current limit regulator. - -config ISP1301_OMAP - tristate "Philips ISP1301 with OMAP OTG" - depends on I2C && ARCH_OMAP_OTG - select USB_OTG_UTILS - help - If you say yes here you get support for the Philips ISP1301 - USB-On-The-Go transceiver working with the OMAP OTG controller. - The ISP1301 is a full speed USB transceiver which is used in - products including H2, H3, and H4 development boards for Texas - Instruments OMAP processors. - - This driver can also be built as a module. If so, the module - will be called isp1301_omap. - -config USB_ULPI - bool "Generic ULPI Transceiver Driver" - depends on ARM - select USB_OTG_UTILS - help - Enable this to support ULPI connected USB OTG transceivers which - are likely found on embedded boards. - -config USB_ULPI_VIEWPORT - bool - depends on USB_ULPI - help - Provides read/write operations to the ULPI phy register set for - controllers with a viewport register (e.g. Chipidea/ARC controllers). - -config TWL4030_USB - tristate "TWL4030 USB Transceiver Driver" - depends on TWL4030_CORE && REGULATOR_TWL4030 && USB_MUSB_OMAP2PLUS - select USB_OTG_UTILS - help - Enable this to support the USB OTG transceiver on TWL4030 - family chips (including the TWL5030 and TPS659x0 devices). - This transceiver supports high and full speed devices plus, - in host mode, low speed. - -config TWL6030_USB - tristate "TWL6030 USB Transceiver Driver" - depends on TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS - select USB_OTG_UTILS - help - Enable this to support the USB OTG transceiver on TWL6030 - family chips. This TWL6030 transceiver has the VBUS and ID GND - and OTG SRP events capabilities. For all other transceiver functionality - UTMI PHY is embedded in OMAP4430. The internal PHY configurations APIs - are hooked to this driver through platform_data structure. - The definition of internal PHY APIs are in the mach-omap2 layer. - -config NOP_USB_XCEIV - tristate "NOP USB Transceiver Driver" - select USB_OTG_UTILS - help - This driver is to be used by all the usb transceiver which are either - built-in with usb ip or which are autonomous and doesn't require any - phy programming such as ISP1x04 etc. - -config USB_MSM_OTG - tristate "OTG support for Qualcomm on-chip USB controller" - depends on (USB || USB_GADGET) && ARCH_MSM - select USB_OTG_UTILS - help - Enable this to support the USB OTG transceiver on MSM chips. It - handles PHY initialization, clock management, and workarounds - required after resetting the hardware and power management. - This driver is required even for peripheral only or host only - mode configurations. - This driver is not supported on boards like trout which - has an external PHY. - -config AB8500_USB - tristate "AB8500 USB Transceiver Driver" - depends on AB8500_CORE - select USB_OTG_UTILS - help - Enable this to support the USB OTG transceiver in AB8500 chip. - This transceiver supports high and full speed devices plus, - in host mode, low speed. - -config FSL_USB2_OTG - bool "Freescale USB OTG Transceiver Driver" - depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_SUSPEND - select USB_OTG - select USB_OTG_UTILS - help - Enable this to support Freescale USB OTG transceiver. - -config USB_MXS_PHY - tristate "Freescale MXS USB PHY support" - depends on ARCH_MXC || ARCH_MXS - select STMP_DEVICE - select USB_OTG_UTILS - help - Enable this to support the Freescale MXS USB PHY. - - MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x. - -config USB_MV_OTG - tristate "Marvell USB OTG support" - depends on USB_EHCI_MV && USB_MV_UDC && USB_SUSPEND - select USB_OTG - select USB_OTG_UTILS - help - Say Y here if you want to build Marvell USB OTG transciever - driver in kernel (including PXA and MMP series). This driver - implements role switch between EHCI host driver and gadget driver. - - To compile this driver as a module, choose M here. - -endif # USB || OTG diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile deleted file mode 100644 index a844b8d35d1..00000000000 --- a/drivers/usb/otg/Makefile +++ /dev/null @@ -1,24 +0,0 @@ -# -# OTG infrastructure and transceiver drivers -# - -ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG -ccflags-$(CONFIG_USB_GADGET_DEBUG) += -DDEBUG - -# infrastructure -obj-$(CONFIG_USB_OTG_UTILS) += otg.o - -# transceiver drivers -obj-$(CONFIG_USB_GPIO_VBUS) += gpio_vbus.o -obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o -obj-$(CONFIG_TWL4030_USB) += twl4030-usb.o -obj-$(CONFIG_TWL6030_USB) += twl6030-usb.o -obj-$(CONFIG_NOP_USB_XCEIV) += nop-usb-xceiv.o -obj-$(CONFIG_USB_ULPI) += ulpi.o -obj-$(CONFIG_USB_ULPI_VIEWPORT) += ulpi_viewport.o -obj-$(CONFIG_USB_MSM_OTG) += msm_otg.o -obj-$(CONFIG_AB8500_USB) += ab8500-usb.o -fsl_usb2_otg-objs := fsl_otg.o otg_fsm.o -obj-$(CONFIG_FSL_USB2_OTG) += fsl_usb2_otg.o -obj-$(CONFIG_USB_MXS_PHY) += mxs-phy.o -obj-$(CONFIG_USB_MV_OTG) += mv_otg.o diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c deleted file mode 100644 index 2d86f26a018..00000000000 --- a/drivers/usb/otg/ab8500-usb.c +++ /dev/null @@ -1,596 +0,0 @@ -/* - * drivers/usb/otg/ab8500_usb.c - * - * USB transceiver driver for AB8500 chip - * - * Copyright (C) 2010 ST-Ericsson AB - * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/usb/otg.h> -#include <linux/slab.h> -#include <linux/notifier.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/mfd/abx500.h> -#include <linux/mfd/abx500/ab8500.h> - -#define AB8500_MAIN_WD_CTRL_REG 0x01 -#define AB8500_USB_LINE_STAT_REG 0x80 -#define AB8500_USB_PHY_CTRL_REG 0x8A - -#define AB8500_BIT_OTG_STAT_ID (1 << 0) -#define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0) -#define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1) -#define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) -#define AB8500_BIT_WD_CTRL_KICK (1 << 1) - -#define AB8500_V1x_LINK_STAT_WAIT (HZ/10) -#define AB8500_WD_KICK_DELAY_US 100 /* usec */ -#define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ -#define AB8500_WD_V10_DISABLE_DELAY_MS 100 /* ms */ - -/* Usb line status register */ -enum ab8500_usb_link_status { - USB_LINK_NOT_CONFIGURED = 0, - USB_LINK_STD_HOST_NC, - USB_LINK_STD_HOST_C_NS, - USB_LINK_STD_HOST_C_S, - USB_LINK_HOST_CHG_NM, - USB_LINK_HOST_CHG_HS, - USB_LINK_HOST_CHG_HS_CHIRP, - USB_LINK_DEDICATED_CHG, - USB_LINK_ACA_RID_A, - USB_LINK_ACA_RID_B, - USB_LINK_ACA_RID_C_NM, - USB_LINK_ACA_RID_C_HS, - USB_LINK_ACA_RID_C_HS_CHIRP, - USB_LINK_HM_IDGND, - USB_LINK_RESERVED, - USB_LINK_NOT_VALID_LINK -}; - -struct ab8500_usb { - struct usb_phy phy; - struct device *dev; - int irq_num_id_rise; - int irq_num_id_fall; - int irq_num_vbus_rise; - int irq_num_vbus_fall; - int irq_num_link_status; - unsigned vbus_draw; - struct delayed_work dwork; - struct work_struct phy_dis_work; - unsigned long link_status_wait; - int rev; -}; - -static inline struct ab8500_usb *phy_to_ab(struct usb_phy *x) -{ - return container_of(x, struct ab8500_usb, phy); -} - -static void ab8500_usb_wd_workaround(struct ab8500_usb *ab) -{ - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, - AB8500_MAIN_WD_CTRL_REG, - AB8500_BIT_WD_CTRL_ENABLE); - - udelay(AB8500_WD_KICK_DELAY_US); - - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, - AB8500_MAIN_WD_CTRL_REG, - (AB8500_BIT_WD_CTRL_ENABLE - | AB8500_BIT_WD_CTRL_KICK)); - - if (ab->rev > 0x10) /* v1.1 v2.0 */ - udelay(AB8500_WD_V11_DISABLE_DELAY_US); - else /* v1.0 */ - msleep(AB8500_WD_V10_DISABLE_DELAY_MS); - - abx500_set_register_interruptible(ab->dev, - AB8500_SYS_CTRL2_BLOCK, - AB8500_MAIN_WD_CTRL_REG, - 0); -} - -static void ab8500_usb_phy_ctrl(struct ab8500_usb *ab, bool sel_host, - bool enable) -{ - u8 ctrl_reg; - abx500_get_register_interruptible(ab->dev, - AB8500_USB, - AB8500_USB_PHY_CTRL_REG, - &ctrl_reg); - if (sel_host) { - if (enable) - ctrl_reg |= AB8500_BIT_PHY_CTRL_HOST_EN; - else - ctrl_reg &= ~AB8500_BIT_PHY_CTRL_HOST_EN; - } else { - if (enable) - ctrl_reg |= AB8500_BIT_PHY_CTRL_DEVICE_EN; - else - ctrl_reg &= ~AB8500_BIT_PHY_CTRL_DEVICE_EN; - } - - abx500_set_register_interruptible(ab->dev, - AB8500_USB, - AB8500_USB_PHY_CTRL_REG, - ctrl_reg); - - /* Needed to enable the phy.*/ - if (enable) - ab8500_usb_wd_workaround(ab); -} - -#define ab8500_usb_host_phy_en(ab) ab8500_usb_phy_ctrl(ab, true, true) -#define ab8500_usb_host_phy_dis(ab) ab8500_usb_phy_ctrl(ab, true, false) -#define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_ctrl(ab, false, true) -#define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_ctrl(ab, false, false) - -static int ab8500_usb_link_status_update(struct ab8500_usb *ab) -{ - u8 reg; - enum ab8500_usb_link_status lsts; - void *v = NULL; - enum usb_phy_events event; - - abx500_get_register_interruptible(ab->dev, - AB8500_USB, - AB8500_USB_LINE_STAT_REG, - ®); - - lsts = (reg >> 3) & 0x0F; - - switch (lsts) { - case USB_LINK_NOT_CONFIGURED: - case USB_LINK_RESERVED: - case USB_LINK_NOT_VALID_LINK: - /* TODO: Disable regulators. */ - ab8500_usb_host_phy_dis(ab); - ab8500_usb_peri_phy_dis(ab); - ab->phy.state = OTG_STATE_B_IDLE; - ab->phy.otg->default_a = false; - ab->vbus_draw = 0; - event = USB_EVENT_NONE; - break; - - case USB_LINK_STD_HOST_NC: - case USB_LINK_STD_HOST_C_NS: - case USB_LINK_STD_HOST_C_S: - case USB_LINK_HOST_CHG_NM: - case USB_LINK_HOST_CHG_HS: - case USB_LINK_HOST_CHG_HS_CHIRP: - if (ab->phy.otg->gadget) { - /* TODO: Enable regulators. */ - ab8500_usb_peri_phy_en(ab); - v = ab->phy.otg->gadget; - } - event = USB_EVENT_VBUS; - break; - - case USB_LINK_HM_IDGND: - if (ab->phy.otg->host) { - /* TODO: Enable regulators. */ - ab8500_usb_host_phy_en(ab); - v = ab->phy.otg->host; - } - ab->phy.state = OTG_STATE_A_IDLE; - ab->phy.otg->default_a = true; - event = USB_EVENT_ID; - break; - - case USB_LINK_ACA_RID_A: - case USB_LINK_ACA_RID_B: - /* TODO */ - case USB_LINK_ACA_RID_C_NM: - case USB_LINK_ACA_RID_C_HS: - case USB_LINK_ACA_RID_C_HS_CHIRP: - case USB_LINK_DEDICATED_CHG: - /* TODO: vbus_draw */ - event = USB_EVENT_CHARGER; - break; - } - - atomic_notifier_call_chain(&ab->phy.notifier, event, v); - - return 0; -} - -static void ab8500_usb_delayed_work(struct work_struct *work) -{ - struct ab8500_usb *ab = container_of(work, struct ab8500_usb, - dwork.work); - - ab8500_usb_link_status_update(ab); -} - -static irqreturn_t ab8500_usb_v1x_common_irq(int irq, void *data) -{ - struct ab8500_usb *ab = (struct ab8500_usb *) data; - - /* Wait for link status to become stable. */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); - - return IRQ_HANDLED; -} - -static irqreturn_t ab8500_usb_v1x_vbus_fall_irq(int irq, void *data) -{ - struct ab8500_usb *ab = (struct ab8500_usb *) data; - - /* Link status will not be updated till phy is disabled. */ - ab8500_usb_peri_phy_dis(ab); - - /* Wait for link status to become stable. */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); - - return IRQ_HANDLED; -} - -static irqreturn_t ab8500_usb_v20_irq(int irq, void *data) -{ - struct ab8500_usb *ab = (struct ab8500_usb *) data; - - ab8500_usb_link_status_update(ab); - - return IRQ_HANDLED; -} - -static void ab8500_usb_phy_disable_work(struct work_struct *work) -{ - struct ab8500_usb *ab = container_of(work, struct ab8500_usb, - phy_dis_work); - - if (!ab->phy.otg->host) - ab8500_usb_host_phy_dis(ab); - - if (!ab->phy.otg->gadget) - ab8500_usb_peri_phy_dis(ab); -} - -static int ab8500_usb_set_power(struct usb_phy *phy, unsigned mA) -{ - struct ab8500_usb *ab; - - if (!phy) - return -ENODEV; - - ab = phy_to_ab(phy); - - ab->vbus_draw = mA; - - if (mA) - atomic_notifier_call_chain(&ab->phy.notifier, - USB_EVENT_ENUMERATED, ab->phy.otg->gadget); - return 0; -} - -/* TODO: Implement some way for charging or other drivers to read - * ab->vbus_draw. - */ - -static int ab8500_usb_set_suspend(struct usb_phy *x, int suspend) -{ - /* TODO */ - return 0; -} - -static int ab8500_usb_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - struct ab8500_usb *ab; - - if (!otg) - return -ENODEV; - - ab = phy_to_ab(otg->phy); - - /* Some drivers call this function in atomic context. - * Do not update ab8500 registers directly till this - * is fixed. - */ - - if (!gadget) { - /* TODO: Disable regulators. */ - otg->gadget = NULL; - schedule_work(&ab->phy_dis_work); - } else { - otg->gadget = gadget; - otg->phy->state = OTG_STATE_B_IDLE; - - /* Phy will not be enabled if cable is already - * plugged-in. Schedule to enable phy. - * Use same delay to avoid any race condition. - */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); - } - - return 0; -} - -static int ab8500_usb_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct ab8500_usb *ab; - - if (!otg) - return -ENODEV; - - ab = phy_to_ab(otg->phy); - - /* Some drivers call this function in atomic context. - * Do not update ab8500 registers directly till this - * is fixed. - */ - - if (!host) { - /* TODO: Disable regulators. */ - otg->host = NULL; - schedule_work(&ab->phy_dis_work); - } else { - otg->host = host; - /* Phy will not be enabled if cable is already - * plugged-in. Schedule to enable phy. - * Use same delay to avoid any race condition. - */ - schedule_delayed_work(&ab->dwork, ab->link_status_wait); - } - - return 0; -} - -static void ab8500_usb_irq_free(struct ab8500_usb *ab) -{ - if (ab->rev < 0x20) { - free_irq(ab->irq_num_id_rise, ab); - free_irq(ab->irq_num_id_fall, ab); - free_irq(ab->irq_num_vbus_rise, ab); - free_irq(ab->irq_num_vbus_fall, ab); - } else { - free_irq(ab->irq_num_link_status, ab); - } -} - -static int ab8500_usb_v1x_res_setup(struct platform_device *pdev, - struct ab8500_usb *ab) -{ - int err; - - ab->irq_num_id_rise = platform_get_irq_byname(pdev, "ID_WAKEUP_R"); - if (ab->irq_num_id_rise < 0) { - dev_err(&pdev->dev, "ID rise irq not found\n"); - return ab->irq_num_id_rise; - } - err = request_threaded_irq(ab->irq_num_id_rise, NULL, - ab8500_usb_v1x_common_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-id-rise", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for ID rise irq\n"); - goto fail0; - } - - ab->irq_num_id_fall = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); - if (ab->irq_num_id_fall < 0) { - dev_err(&pdev->dev, "ID fall irq not found\n"); - return ab->irq_num_id_fall; - } - err = request_threaded_irq(ab->irq_num_id_fall, NULL, - ab8500_usb_v1x_common_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-id-fall", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for ID fall irq\n"); - goto fail1; - } - - ab->irq_num_vbus_rise = platform_get_irq_byname(pdev, "VBUS_DET_R"); - if (ab->irq_num_vbus_rise < 0) { - dev_err(&pdev->dev, "VBUS rise irq not found\n"); - return ab->irq_num_vbus_rise; - } - err = request_threaded_irq(ab->irq_num_vbus_rise, NULL, - ab8500_usb_v1x_common_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-vbus-rise", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for Vbus rise irq\n"); - goto fail2; - } - - ab->irq_num_vbus_fall = platform_get_irq_byname(pdev, "VBUS_DET_F"); - if (ab->irq_num_vbus_fall < 0) { - dev_err(&pdev->dev, "VBUS fall irq not found\n"); - return ab->irq_num_vbus_fall; - } - err = request_threaded_irq(ab->irq_num_vbus_fall, NULL, - ab8500_usb_v1x_vbus_fall_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-vbus-fall", ab); - if (err < 0) { - dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); - goto fail3; - } - - return 0; -fail3: - free_irq(ab->irq_num_vbus_rise, ab); -fail2: - free_irq(ab->irq_num_id_fall, ab); -fail1: - free_irq(ab->irq_num_id_rise, ab); -fail0: - return err; -} - -static int ab8500_usb_v2_res_setup(struct platform_device *pdev, - struct ab8500_usb *ab) -{ - int err; - - ab->irq_num_link_status = platform_get_irq_byname(pdev, - "USB_LINK_STATUS"); - if (ab->irq_num_link_status < 0) { - dev_err(&pdev->dev, "Link status irq not found\n"); - return ab->irq_num_link_status; - } - - err = request_threaded_irq(ab->irq_num_link_status, NULL, - ab8500_usb_v20_irq, - IRQF_NO_SUSPEND | IRQF_SHARED, - "usb-link-status", ab); - if (err < 0) { - dev_err(ab->dev, - "request_irq failed for link status irq\n"); - return err; - } - - return 0; -} - -static int ab8500_usb_probe(struct platform_device *pdev) -{ - struct ab8500_usb *ab; - struct usb_otg *otg; - int err; - int rev; - - rev = abx500_get_chip_id(&pdev->dev); - if (rev < 0) { - dev_err(&pdev->dev, "Chip id read failed\n"); - return rev; - } else if (rev < 0x10) { - dev_err(&pdev->dev, "Unsupported AB8500 chip\n"); - return -ENODEV; - } - - ab = kzalloc(sizeof *ab, GFP_KERNEL); - if (!ab) - return -ENOMEM; - - otg = kzalloc(sizeof *otg, GFP_KERNEL); - if (!otg) { - kfree(ab); - return -ENOMEM; - } - - ab->dev = &pdev->dev; - ab->rev = rev; - ab->phy.dev = ab->dev; - ab->phy.otg = otg; - ab->phy.label = "ab8500"; - ab->phy.set_suspend = ab8500_usb_set_suspend; - ab->phy.set_power = ab8500_usb_set_power; - ab->phy.state = OTG_STATE_UNDEFINED; - - otg->phy = &ab->phy; - otg->set_host = ab8500_usb_set_host; - otg->set_peripheral = ab8500_usb_set_peripheral; - - platform_set_drvdata(pdev, ab); - - ATOMIC_INIT_NOTIFIER_HEAD(&ab->phy.notifier); - - /* v1: Wait for link status to become stable. - * all: Updates form set_host and set_peripheral as they are atomic. - */ - INIT_DELAYED_WORK(&ab->dwork, ab8500_usb_delayed_work); - - /* all: Disable phy when called from set_host and set_peripheral */ - INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); - - if (ab->rev < 0x20) { - err = ab8500_usb_v1x_res_setup(pdev, ab); - ab->link_status_wait = AB8500_V1x_LINK_STAT_WAIT; - } else { - err = ab8500_usb_v2_res_setup(pdev, ab); - } - - if (err < 0) - goto fail0; - - err = usb_add_phy(&ab->phy, USB_PHY_TYPE_USB2); - if (err) { - dev_err(&pdev->dev, "Can't register transceiver\n"); - goto fail1; - } - - dev_info(&pdev->dev, "AB8500 usb driver initialized\n"); - - return 0; -fail1: - ab8500_usb_irq_free(ab); -fail0: - kfree(otg); - kfree(ab); - return err; -} - -static int ab8500_usb_remove(struct platform_device *pdev) -{ - struct ab8500_usb *ab = platform_get_drvdata(pdev); - - ab8500_usb_irq_free(ab); - - cancel_delayed_work_sync(&ab->dwork); - - cancel_work_sync(&ab->phy_dis_work); - - usb_remove_phy(&ab->phy); - - ab8500_usb_host_phy_dis(ab); - ab8500_usb_peri_phy_dis(ab); - - platform_set_drvdata(pdev, NULL); - - kfree(ab->phy.otg); - kfree(ab); - - return 0; -} - -static struct platform_driver ab8500_usb_driver = { - .probe = ab8500_usb_probe, - .remove = ab8500_usb_remove, - .driver = { - .name = "ab8500-usb", - .owner = THIS_MODULE, - }, -}; - -static int __init ab8500_usb_init(void) -{ - return platform_driver_register(&ab8500_usb_driver); -} -subsys_initcall(ab8500_usb_init); - -static void __exit ab8500_usb_exit(void) -{ - platform_driver_unregister(&ab8500_usb_driver); -} -module_exit(ab8500_usb_exit); - -MODULE_ALIAS("platform:ab8500_usb"); -MODULE_AUTHOR("ST-Ericsson AB"); -MODULE_DESCRIPTION("AB8500 usb transceiver driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/fsl_otg.c b/drivers/usb/otg/fsl_otg.c deleted file mode 100644 index d16adb41eb2..00000000000 --- a/drivers/usb/otg/fsl_otg.c +++ /dev/null @@ -1,1183 +0,0 @@ -/* - * Copyright (C) 2007,2008 Freescale semiconductor, Inc. - * - * Author: Li Yang <LeoLi@freescale.com> - * Jerry Huang <Chang-Ming.Huang@freescale.com> - * - * Initialization based on code from Shlomi Gridish. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/slab.h> -#include <linux/proc_fs.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/timer.h> -#include <linux/usb.h> -#include <linux/device.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> -#include <linux/workqueue.h> -#include <linux/time.h> -#include <linux/fsl_devices.h> -#include <linux/platform_device.h> -#include <linux/uaccess.h> - -#include <asm/unaligned.h> - -#include "fsl_otg.h" - -#define DRIVER_VERSION "Rev. 1.55" -#define DRIVER_AUTHOR "Jerry Huang/Li Yang" -#define DRIVER_DESC "Freescale USB OTG Transceiver Driver" -#define DRIVER_INFO DRIVER_DESC " " DRIVER_VERSION - -static const char driver_name[] = "fsl-usb2-otg"; - -const pm_message_t otg_suspend_state = { - .event = 1, -}; - -#define HA_DATA_PULSE - -static struct usb_dr_mmap *usb_dr_regs; -static struct fsl_otg *fsl_otg_dev; -static int srp_wait_done; - -/* FSM timers */ -struct fsl_otg_timer *a_wait_vrise_tmr, *a_wait_bcon_tmr, *a_aidl_bdis_tmr, - *b_ase0_brst_tmr, *b_se0_srp_tmr; - -/* Driver specific timers */ -struct fsl_otg_timer *b_data_pulse_tmr, *b_vbus_pulse_tmr, *b_srp_fail_tmr, - *b_srp_wait_tmr, *a_wait_enum_tmr; - -static struct list_head active_timers; - -static struct fsl_otg_config fsl_otg_initdata = { - .otg_port = 1, -}; - -#ifdef CONFIG_PPC32 -static u32 _fsl_readl_be(const unsigned __iomem *p) -{ - return in_be32(p); -} - -static u32 _fsl_readl_le(const unsigned __iomem *p) -{ - return in_le32(p); -} - -static void _fsl_writel_be(u32 v, unsigned __iomem *p) -{ - out_be32(p, v); -} - -static void _fsl_writel_le(u32 v, unsigned __iomem *p) -{ - out_le32(p, v); -} - -static u32 (*_fsl_readl)(const unsigned __iomem *p); -static void (*_fsl_writel)(u32 v, unsigned __iomem *p); - -#define fsl_readl(p) (*_fsl_readl)((p)) -#define fsl_writel(v, p) (*_fsl_writel)((v), (p)) - -#else -#define fsl_readl(addr) readl(addr) -#define fsl_writel(val, addr) writel(val, addr) -#endif /* CONFIG_PPC32 */ - -/* Routines to access transceiver ULPI registers */ -u8 view_ulpi(u8 addr) -{ - u32 temp; - - temp = 0x40000000 | (addr << 16); - fsl_writel(temp, &usb_dr_regs->ulpiview); - udelay(1000); - while (temp & 0x40) - temp = fsl_readl(&usb_dr_regs->ulpiview); - return (le32_to_cpu(temp) & 0x0000ff00) >> 8; -} - -int write_ulpi(u8 addr, u8 data) -{ - u32 temp; - - temp = 0x60000000 | (addr << 16) | data; - fsl_writel(temp, &usb_dr_regs->ulpiview); - return 0; -} - -/* -------------------------------------------------------------*/ -/* Operations that will be called from OTG Finite State Machine */ - -/* Charge vbus for vbus pulsing in SRP */ -void fsl_otg_chrg_vbus(int on) -{ - u32 tmp; - - tmp = fsl_readl(&usb_dr_regs->otgsc) & ~OTGSC_INTSTS_MASK; - - if (on) - /* stop discharging, start charging */ - tmp = (tmp & ~OTGSC_CTRL_VBUS_DISCHARGE) | - OTGSC_CTRL_VBUS_CHARGE; - else - /* stop charging */ - tmp &= ~OTGSC_CTRL_VBUS_CHARGE; - - fsl_writel(tmp, &usb_dr_regs->otgsc); -} - -/* Discharge vbus through a resistor to ground */ -void fsl_otg_dischrg_vbus(int on) -{ - u32 tmp; - - tmp = fsl_readl(&usb_dr_regs->otgsc) & ~OTGSC_INTSTS_MASK; - - if (on) - /* stop charging, start discharging */ - tmp = (tmp & ~OTGSC_CTRL_VBUS_CHARGE) | - OTGSC_CTRL_VBUS_DISCHARGE; - else - /* stop discharging */ - tmp &= ~OTGSC_CTRL_VBUS_DISCHARGE; - - fsl_writel(tmp, &usb_dr_regs->otgsc); -} - -/* A-device driver vbus, controlled through PP bit in PORTSC */ -void fsl_otg_drv_vbus(int on) -{ - u32 tmp; - - if (on) { - tmp = fsl_readl(&usb_dr_regs->portsc) & ~PORTSC_W1C_BITS; - fsl_writel(tmp | PORTSC_PORT_POWER, &usb_dr_regs->portsc); - } else { - tmp = fsl_readl(&usb_dr_regs->portsc) & - ~PORTSC_W1C_BITS & ~PORTSC_PORT_POWER; - fsl_writel(tmp, &usb_dr_regs->portsc); - } -} - -/* - * Pull-up D+, signalling connect by periperal. Also used in - * data-line pulsing in SRP - */ -void fsl_otg_loc_conn(int on) -{ - u32 tmp; - - tmp = fsl_readl(&usb_dr_regs->otgsc) & ~OTGSC_INTSTS_MASK; - - if (on) - tmp |= OTGSC_CTRL_DATA_PULSING; - else - tmp &= ~OTGSC_CTRL_DATA_PULSING; - - fsl_writel(tmp, &usb_dr_regs->otgsc); -} - -/* - * Generate SOF by host. This is controlled through suspend/resume the - * port. In host mode, controller will automatically send SOF. - * Suspend will block the data on the port. - */ -void fsl_otg_loc_sof(int on) -{ - u32 tmp; - - tmp = fsl_readl(&fsl_otg_dev->dr_mem_map->portsc) & ~PORTSC_W1C_BITS; - if (on) - tmp |= PORTSC_PORT_FORCE_RESUME; - else - tmp |= PORTSC_PORT_SUSPEND; - - fsl_writel(tmp, &fsl_otg_dev->dr_mem_map->portsc); - -} - -/* Start SRP pulsing by data-line pulsing, followed with v-bus pulsing. */ -void fsl_otg_start_pulse(void) -{ - u32 tmp; - - srp_wait_done = 0; -#ifdef HA_DATA_PULSE - tmp = fsl_readl(&usb_dr_regs->otgsc) & ~OTGSC_INTSTS_MASK; - tmp |= OTGSC_HA_DATA_PULSE; - fsl_writel(tmp, &usb_dr_regs->otgsc); -#else - fsl_otg_loc_conn(1); -#endif - - fsl_otg_add_timer(b_data_pulse_tmr); -} - -void b_data_pulse_end(unsigned long foo) -{ -#ifdef HA_DATA_PULSE -#else - fsl_otg_loc_conn(0); -#endif - - /* Do VBUS pulse after data pulse */ - fsl_otg_pulse_vbus(); -} - -void fsl_otg_pulse_vbus(void) -{ - srp_wait_done = 0; - fsl_otg_chrg_vbus(1); - /* start the timer to end vbus charge */ - fsl_otg_add_timer(b_vbus_pulse_tmr); -} - -void b_vbus_pulse_end(unsigned long foo) -{ - fsl_otg_chrg_vbus(0); - - /* - * As USB3300 using the same a_sess_vld and b_sess_vld voltage - * we need to discharge the bus for a while to distinguish - * residual voltage of vbus pulsing and A device pull up - */ - fsl_otg_dischrg_vbus(1); - fsl_otg_add_timer(b_srp_wait_tmr); -} - -void b_srp_end(unsigned long foo) -{ - fsl_otg_dischrg_vbus(0); - srp_wait_done = 1; - - if ((fsl_otg_dev->phy.state == OTG_STATE_B_SRP_INIT) && - fsl_otg_dev->fsm.b_sess_vld) - fsl_otg_dev->fsm.b_srp_done = 1; -} - -/* - * Workaround for a_host suspending too fast. When a_bus_req=0, - * a_host will start by SRP. It needs to set b_hnp_enable before - * actually suspending to start HNP - */ -void a_wait_enum(unsigned long foo) -{ - VDBG("a_wait_enum timeout\n"); - if (!fsl_otg_dev->phy.otg->host->b_hnp_enable) - fsl_otg_add_timer(a_wait_enum_tmr); - else - otg_statemachine(&fsl_otg_dev->fsm); -} - -/* The timeout callback function to set time out bit */ -void set_tmout(unsigned long indicator) -{ - *(int *)indicator = 1; -} - -/* Initialize timers */ -int fsl_otg_init_timers(struct otg_fsm *fsm) -{ - /* FSM used timers */ - a_wait_vrise_tmr = otg_timer_initializer(&set_tmout, TA_WAIT_VRISE, - (unsigned long)&fsm->a_wait_vrise_tmout); - if (!a_wait_vrise_tmr) - return -ENOMEM; - - a_wait_bcon_tmr = otg_timer_initializer(&set_tmout, TA_WAIT_BCON, - (unsigned long)&fsm->a_wait_bcon_tmout); - if (!a_wait_bcon_tmr) - return -ENOMEM; - - a_aidl_bdis_tmr = otg_timer_initializer(&set_tmout, TA_AIDL_BDIS, - (unsigned long)&fsm->a_aidl_bdis_tmout); - if (!a_aidl_bdis_tmr) - return -ENOMEM; - - b_ase0_brst_tmr = otg_timer_initializer(&set_tmout, TB_ASE0_BRST, - (unsigned long)&fsm->b_ase0_brst_tmout); - if (!b_ase0_brst_tmr) - return -ENOMEM; - - b_se0_srp_tmr = otg_timer_initializer(&set_tmout, TB_SE0_SRP, - (unsigned long)&fsm->b_se0_srp); - if (!b_se0_srp_tmr) - return -ENOMEM; - - b_srp_fail_tmr = otg_timer_initializer(&set_tmout, TB_SRP_FAIL, - (unsigned long)&fsm->b_srp_done); - if (!b_srp_fail_tmr) - return -ENOMEM; - - a_wait_enum_tmr = otg_timer_initializer(&a_wait_enum, 10, - (unsigned long)&fsm); - if (!a_wait_enum_tmr) - return -ENOMEM; - - /* device driver used timers */ - b_srp_wait_tmr = otg_timer_initializer(&b_srp_end, TB_SRP_WAIT, 0); - if (!b_srp_wait_tmr) - return -ENOMEM; - - b_data_pulse_tmr = otg_timer_initializer(&b_data_pulse_end, - TB_DATA_PLS, 0); - if (!b_data_pulse_tmr) - return -ENOMEM; - - b_vbus_pulse_tmr = otg_timer_initializer(&b_vbus_pulse_end, - TB_VBUS_PLS, 0); - if (!b_vbus_pulse_tmr) - return -ENOMEM; - - return 0; -} - -/* Uninitialize timers */ -void fsl_otg_uninit_timers(void) -{ - /* FSM used timers */ - if (a_wait_vrise_tmr != NULL) - kfree(a_wait_vrise_tmr); - if (a_wait_bcon_tmr != NULL) - kfree(a_wait_bcon_tmr); - if (a_aidl_bdis_tmr != NULL) - kfree(a_aidl_bdis_tmr); - if (b_ase0_brst_tmr != NULL) - kfree(b_ase0_brst_tmr); - if (b_se0_srp_tmr != NULL) - kfree(b_se0_srp_tmr); - if (b_srp_fail_tmr != NULL) - kfree(b_srp_fail_tmr); - if (a_wait_enum_tmr != NULL) - kfree(a_wait_enum_tmr); - - /* device driver used timers */ - if (b_srp_wait_tmr != NULL) - kfree(b_srp_wait_tmr); - if (b_data_pulse_tmr != NULL) - kfree(b_data_pulse_tmr); - if (b_vbus_pulse_tmr != NULL) - kfree(b_vbus_pulse_tmr); -} - -/* Add timer to timer list */ -void fsl_otg_add_timer(void *gtimer) -{ - struct fsl_otg_timer *timer = gtimer; - struct fsl_otg_timer *tmp_timer; - - /* - * Check if the timer is already in the active list, - * if so update timer count - */ - list_for_each_entry(tmp_timer, &active_timers, list) - if (tmp_timer == timer) { - timer->count = timer->expires; - return; - } - timer->count = timer->expires; - list_add_tail(&timer->list, &active_timers); -} - -/* Remove timer from the timer list; clear timeout status */ -void fsl_otg_del_timer(void *gtimer) -{ - struct fsl_otg_timer *timer = gtimer; - struct fsl_otg_timer *tmp_timer, *del_tmp; - - list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list) - if (tmp_timer == timer) - list_del(&timer->list); -} - -/* - * Reduce timer count by 1, and find timeout conditions. - * Called by fsl_otg 1ms timer interrupt - */ -int fsl_otg_tick_timer(void) -{ - struct fsl_otg_timer *tmp_timer, *del_tmp; - int expired = 0; - - list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list) { - tmp_timer->count--; - /* check if timer expires */ - if (!tmp_timer->count) { - list_del(&tmp_timer->list); - tmp_timer->function(tmp_timer->data); - expired = 1; - } - } - - return expired; -} - -/* Reset controller, not reset the bus */ -void otg_reset_controller(void) -{ - u32 command; - - command = fsl_readl(&usb_dr_regs->usbcmd); - command |= (1 << 1); - fsl_writel(command, &usb_dr_regs->usbcmd); - while (fsl_readl(&usb_dr_regs->usbcmd) & (1 << 1)) - ; -} - -/* Call suspend/resume routines in host driver */ -int fsl_otg_start_host(struct otg_fsm *fsm, int on) -{ - struct usb_otg *otg = fsm->otg; - struct device *dev; - struct fsl_otg *otg_dev = container_of(otg->phy, struct fsl_otg, phy); - u32 retval = 0; - - if (!otg->host) - return -ENODEV; - dev = otg->host->controller; - - /* - * Update a_vbus_vld state as a_vbus_vld int is disabled - * in device mode - */ - fsm->a_vbus_vld = - !!(fsl_readl(&usb_dr_regs->otgsc) & OTGSC_STS_A_VBUS_VALID); - if (on) { - /* start fsl usb host controller */ - if (otg_dev->host_working) - goto end; - else { - otg_reset_controller(); - VDBG("host on......\n"); - if (dev->driver->pm && dev->driver->pm->resume) { - retval = dev->driver->pm->resume(dev); - if (fsm->id) { - /* default-b */ - fsl_otg_drv_vbus(1); - /* - * Workaround: b_host can't driver - * vbus, but PP in PORTSC needs to - * be 1 for host to work. - * So we set drv_vbus bit in - * transceiver to 0 thru ULPI. - */ - write_ulpi(0x0c, 0x20); - } - } - - otg_dev->host_working = 1; - } - } else { - /* stop fsl usb host controller */ - if (!otg_dev->host_working) - goto end; - else { - VDBG("host off......\n"); - if (dev && dev->driver) { - if (dev->driver->pm && dev->driver->pm->suspend) - retval = dev->driver->pm->suspend(dev); - if (fsm->id) - /* default-b */ - fsl_otg_drv_vbus(0); - } - otg_dev->host_working = 0; - } - } -end: - return retval; -} - -/* - * Call suspend and resume function in udc driver - * to stop and start udc driver. - */ -int fsl_otg_start_gadget(struct otg_fsm *fsm, int on) -{ - struct usb_otg *otg = fsm->otg; - struct device *dev; - - if (!otg->gadget || !otg->gadget->dev.parent) - return -ENODEV; - - VDBG("gadget %s\n", on ? "on" : "off"); - dev = otg->gadget->dev.parent; - - if (on) { - if (dev->driver->resume) - dev->driver->resume(dev); - } else { - if (dev->driver->suspend) - dev->driver->suspend(dev, otg_suspend_state); - } - - return 0; -} - -/* - * Called by initialization code of host driver. Register host controller - * to the OTG. Suspend host for OTG role detection. - */ -static int fsl_otg_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct fsl_otg *otg_dev; - - if (!otg) - return -ENODEV; - - otg_dev = container_of(otg->phy, struct fsl_otg, phy); - if (otg_dev != fsl_otg_dev) - return -ENODEV; - - otg->host = host; - - otg_dev->fsm.a_bus_drop = 0; - otg_dev->fsm.a_bus_req = 1; - - if (host) { - VDBG("host off......\n"); - - otg->host->otg_port = fsl_otg_initdata.otg_port; - otg->host->is_b_host = otg_dev->fsm.id; - /* - * must leave time for khubd to finish its thing - * before yanking the host driver out from under it, - * so suspend the host after a short delay. - */ - otg_dev->host_working = 1; - schedule_delayed_work(&otg_dev->otg_event, 100); - return 0; - } else { - /* host driver going away */ - if (!(fsl_readl(&otg_dev->dr_mem_map->otgsc) & - OTGSC_STS_USB_ID)) { - /* Mini-A cable connected */ - struct otg_fsm *fsm = &otg_dev->fsm; - - otg->phy->state = OTG_STATE_UNDEFINED; - fsm->protocol = PROTO_UNDEF; - } - } - - otg_dev->host_working = 0; - - otg_statemachine(&otg_dev->fsm); - - return 0; -} - -/* Called by initialization code of udc. Register udc to OTG. */ -static int fsl_otg_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - struct fsl_otg *otg_dev; - - if (!otg) - return -ENODEV; - - otg_dev = container_of(otg->phy, struct fsl_otg, phy); - VDBG("otg_dev 0x%x\n", (int)otg_dev); - VDBG("fsl_otg_dev 0x%x\n", (int)fsl_otg_dev); - if (otg_dev != fsl_otg_dev) - return -ENODEV; - - if (!gadget) { - if (!otg->default_a) - otg->gadget->ops->vbus_draw(otg->gadget, 0); - usb_gadget_vbus_disconnect(otg->gadget); - otg->gadget = 0; - otg_dev->fsm.b_bus_req = 0; - otg_statemachine(&otg_dev->fsm); - return 0; - } - - otg->gadget = gadget; - otg->gadget->is_a_peripheral = !otg_dev->fsm.id; - - otg_dev->fsm.b_bus_req = 1; - - /* start the gadget right away if the ID pin says Mini-B */ - DBG("ID pin=%d\n", otg_dev->fsm.id); - if (otg_dev->fsm.id == 1) { - fsl_otg_start_host(&otg_dev->fsm, 0); - otg_drv_vbus(&otg_dev->fsm, 0); - fsl_otg_start_gadget(&otg_dev->fsm, 1); - } - - return 0; -} - -/* Set OTG port power, only for B-device */ -static int fsl_otg_set_power(struct usb_phy *phy, unsigned mA) -{ - if (!fsl_otg_dev) - return -ENODEV; - if (phy->state == OTG_STATE_B_PERIPHERAL) - pr_info("FSL OTG: Draw %d mA\n", mA); - - return 0; -} - -/* - * Delayed pin detect interrupt processing. - * - * When the Mini-A cable is disconnected from the board, - * the pin-detect interrupt happens before the disconnect - * interrupts for the connected device(s). In order to - * process the disconnect interrupt(s) prior to switching - * roles, the pin-detect interrupts are delayed, and handled - * by this routine. - */ -static void fsl_otg_event(struct work_struct *work) -{ - struct fsl_otg *og = container_of(work, struct fsl_otg, otg_event.work); - struct otg_fsm *fsm = &og->fsm; - - if (fsm->id) { /* switch to gadget */ - fsl_otg_start_host(fsm, 0); - otg_drv_vbus(fsm, 0); - fsl_otg_start_gadget(fsm, 1); - } -} - -/* B-device start SRP */ -static int fsl_otg_start_srp(struct usb_otg *otg) -{ - struct fsl_otg *otg_dev; - - if (!otg || otg->phy->state != OTG_STATE_B_IDLE) - return -ENODEV; - - otg_dev = container_of(otg->phy, struct fsl_otg, phy); - if (otg_dev != fsl_otg_dev) - return -ENODEV; - - otg_dev->fsm.b_bus_req = 1; - otg_statemachine(&otg_dev->fsm); - - return 0; -} - -/* A_host suspend will call this function to start hnp */ -static int fsl_otg_start_hnp(struct usb_otg *otg) -{ - struct fsl_otg *otg_dev; - - if (!otg) - return -ENODEV; - - otg_dev = container_of(otg->phy, struct fsl_otg, phy); - if (otg_dev != fsl_otg_dev) - return -ENODEV; - - DBG("start_hnp...n"); - - /* clear a_bus_req to enter a_suspend state */ - otg_dev->fsm.a_bus_req = 0; - otg_statemachine(&otg_dev->fsm); - - return 0; -} - -/* - * Interrupt handler. OTG/host/peripheral share the same int line. - * OTG driver clears OTGSC interrupts and leaves USB interrupts - * intact. It needs to have knowledge of some USB interrupts - * such as port change. - */ -irqreturn_t fsl_otg_isr(int irq, void *dev_id) -{ - struct otg_fsm *fsm = &((struct fsl_otg *)dev_id)->fsm; - struct usb_otg *otg = ((struct fsl_otg *)dev_id)->phy.otg; - u32 otg_int_src, otg_sc; - - otg_sc = fsl_readl(&usb_dr_regs->otgsc); - otg_int_src = otg_sc & OTGSC_INTSTS_MASK & (otg_sc >> 8); - - /* Only clear otg interrupts */ - fsl_writel(otg_sc, &usb_dr_regs->otgsc); - - /*FIXME: ID change not generate when init to 0 */ - fsm->id = (otg_sc & OTGSC_STS_USB_ID) ? 1 : 0; - otg->default_a = (fsm->id == 0); - - /* process OTG interrupts */ - if (otg_int_src) { - if (otg_int_src & OTGSC_INTSTS_USB_ID) { - fsm->id = (otg_sc & OTGSC_STS_USB_ID) ? 1 : 0; - otg->default_a = (fsm->id == 0); - /* clear conn information */ - if (fsm->id) - fsm->b_conn = 0; - else - fsm->a_conn = 0; - - if (otg->host) - otg->host->is_b_host = fsm->id; - if (otg->gadget) - otg->gadget->is_a_peripheral = !fsm->id; - VDBG("ID int (ID is %d)\n", fsm->id); - - if (fsm->id) { /* switch to gadget */ - schedule_delayed_work( - &((struct fsl_otg *)dev_id)->otg_event, - 100); - } else { /* switch to host */ - cancel_delayed_work(& - ((struct fsl_otg *)dev_id)-> - otg_event); - fsl_otg_start_gadget(fsm, 0); - otg_drv_vbus(fsm, 1); - fsl_otg_start_host(fsm, 1); - } - return IRQ_HANDLED; - } - } - return IRQ_NONE; -} - -static struct otg_fsm_ops fsl_otg_ops = { - .chrg_vbus = fsl_otg_chrg_vbus, - .drv_vbus = fsl_otg_drv_vbus, - .loc_conn = fsl_otg_loc_conn, - .loc_sof = fsl_otg_loc_sof, - .start_pulse = fsl_otg_start_pulse, - - .add_timer = fsl_otg_add_timer, - .del_timer = fsl_otg_del_timer, - - .start_host = fsl_otg_start_host, - .start_gadget = fsl_otg_start_gadget, -}; - -/* Initialize the global variable fsl_otg_dev and request IRQ for OTG */ -static int fsl_otg_conf(struct platform_device *pdev) -{ - struct fsl_otg *fsl_otg_tc; - int status; - - if (fsl_otg_dev) - return 0; - - /* allocate space to fsl otg device */ - fsl_otg_tc = kzalloc(sizeof(struct fsl_otg), GFP_KERNEL); - if (!fsl_otg_tc) - return -ENOMEM; - - fsl_otg_tc->phy.otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL); - if (!fsl_otg_tc->phy.otg) { - kfree(fsl_otg_tc); - return -ENOMEM; - } - - INIT_DELAYED_WORK(&fsl_otg_tc->otg_event, fsl_otg_event); - - INIT_LIST_HEAD(&active_timers); - status = fsl_otg_init_timers(&fsl_otg_tc->fsm); - if (status) { - pr_info("Couldn't init OTG timers\n"); - goto err; - } - spin_lock_init(&fsl_otg_tc->fsm.lock); - - /* Set OTG state machine operations */ - fsl_otg_tc->fsm.ops = &fsl_otg_ops; - - /* initialize the otg structure */ - fsl_otg_tc->phy.label = DRIVER_DESC; - fsl_otg_tc->phy.set_power = fsl_otg_set_power; - - fsl_otg_tc->phy.otg->phy = &fsl_otg_tc->phy; - fsl_otg_tc->phy.otg->set_host = fsl_otg_set_host; - fsl_otg_tc->phy.otg->set_peripheral = fsl_otg_set_peripheral; - fsl_otg_tc->phy.otg->start_hnp = fsl_otg_start_hnp; - fsl_otg_tc->phy.otg->start_srp = fsl_otg_start_srp; - - fsl_otg_dev = fsl_otg_tc; - - /* Store the otg transceiver */ - status = usb_add_phy(&fsl_otg_tc->phy, USB_PHY_TYPE_USB2); - if (status) { - pr_warn(FSL_OTG_NAME ": unable to register OTG transceiver.\n"); - goto err; - } - - return 0; -err: - fsl_otg_uninit_timers(); - kfree(fsl_otg_tc->phy.otg); - kfree(fsl_otg_tc); - return status; -} - -/* OTG Initialization */ -int usb_otg_start(struct platform_device *pdev) -{ - struct fsl_otg *p_otg; - struct usb_phy *otg_trans = usb_get_phy(USB_PHY_TYPE_USB2); - struct otg_fsm *fsm; - int status; - struct resource *res; - u32 temp; - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - - p_otg = container_of(otg_trans, struct fsl_otg, phy); - fsm = &p_otg->fsm; - - /* Initialize the state machine structure with default values */ - SET_OTG_STATE(otg_trans, OTG_STATE_UNDEFINED); - fsm->otg = p_otg->phy.otg; - - /* We don't require predefined MEM/IRQ resource index */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENXIO; - - /* We don't request_mem_region here to enable resource sharing - * with host/device */ - - usb_dr_regs = ioremap(res->start, sizeof(struct usb_dr_mmap)); - p_otg->dr_mem_map = (struct usb_dr_mmap *)usb_dr_regs; - pdata->regs = (void *)usb_dr_regs; - - if (pdata->init && pdata->init(pdev) != 0) - return -EINVAL; - - if (pdata->big_endian_mmio) { - _fsl_readl = _fsl_readl_be; - _fsl_writel = _fsl_writel_be; - } else { - _fsl_readl = _fsl_readl_le; - _fsl_writel = _fsl_writel_le; - } - - /* request irq */ - p_otg->irq = platform_get_irq(pdev, 0); - status = request_irq(p_otg->irq, fsl_otg_isr, - IRQF_SHARED, driver_name, p_otg); - if (status) { - dev_dbg(p_otg->phy.dev, "can't get IRQ %d, error %d\n", - p_otg->irq, status); - iounmap(p_otg->dr_mem_map); - kfree(p_otg->phy.otg); - kfree(p_otg); - return status; - } - - /* stop the controller */ - temp = fsl_readl(&p_otg->dr_mem_map->usbcmd); - temp &= ~USB_CMD_RUN_STOP; - fsl_writel(temp, &p_otg->dr_mem_map->usbcmd); - - /* reset the controller */ - temp = fsl_readl(&p_otg->dr_mem_map->usbcmd); - temp |= USB_CMD_CTRL_RESET; - fsl_writel(temp, &p_otg->dr_mem_map->usbcmd); - - /* wait reset completed */ - while (fsl_readl(&p_otg->dr_mem_map->usbcmd) & USB_CMD_CTRL_RESET) - ; - - /* configure the VBUSHS as IDLE(both host and device) */ - temp = USB_MODE_STREAM_DISABLE | (pdata->es ? USB_MODE_ES : 0); - fsl_writel(temp, &p_otg->dr_mem_map->usbmode); - - /* configure PHY interface */ - temp = fsl_readl(&p_otg->dr_mem_map->portsc); - temp &= ~(PORTSC_PHY_TYPE_SEL | PORTSC_PTW); - switch (pdata->phy_mode) { - case FSL_USB2_PHY_ULPI: - temp |= PORTSC_PTS_ULPI; - break; - case FSL_USB2_PHY_UTMI_WIDE: - temp |= PORTSC_PTW_16BIT; - /* fall through */ - case FSL_USB2_PHY_UTMI: - temp |= PORTSC_PTS_UTMI; - /* fall through */ - default: - break; - } - fsl_writel(temp, &p_otg->dr_mem_map->portsc); - - if (pdata->have_sysif_regs) { - /* configure control enable IO output, big endian register */ - temp = __raw_readl(&p_otg->dr_mem_map->control); - temp |= USB_CTRL_IOENB; - __raw_writel(temp, &p_otg->dr_mem_map->control); - } - - /* disable all interrupt and clear all OTGSC status */ - temp = fsl_readl(&p_otg->dr_mem_map->otgsc); - temp &= ~OTGSC_INTERRUPT_ENABLE_BITS_MASK; - temp |= OTGSC_INTERRUPT_STATUS_BITS_MASK | OTGSC_CTRL_VBUS_DISCHARGE; - fsl_writel(temp, &p_otg->dr_mem_map->otgsc); - - /* - * The identification (id) input is FALSE when a Mini-A plug is inserted - * in the devices Mini-AB receptacle. Otherwise, this input is TRUE. - * Also: record initial state of ID pin - */ - if (fsl_readl(&p_otg->dr_mem_map->otgsc) & OTGSC_STS_USB_ID) { - p_otg->phy.state = OTG_STATE_UNDEFINED; - p_otg->fsm.id = 1; - } else { - p_otg->phy.state = OTG_STATE_A_IDLE; - p_otg->fsm.id = 0; - } - - DBG("initial ID pin=%d\n", p_otg->fsm.id); - - /* enable OTG ID pin interrupt */ - temp = fsl_readl(&p_otg->dr_mem_map->otgsc); - temp |= OTGSC_INTR_USB_ID_EN; - temp &= ~(OTGSC_CTRL_VBUS_DISCHARGE | OTGSC_INTR_1MS_TIMER_EN); - fsl_writel(temp, &p_otg->dr_mem_map->otgsc); - - return 0; -} - -/* - * state file in sysfs - */ -static int show_fsl_usb2_otg_state(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct otg_fsm *fsm = &fsl_otg_dev->fsm; - char *next = buf; - unsigned size = PAGE_SIZE; - unsigned long flags; - int t; - - spin_lock_irqsave(&fsm->lock, flags); - - /* basic driver infomation */ - t = scnprintf(next, size, - DRIVER_DESC "\n" "fsl_usb2_otg version: %s\n\n", - DRIVER_VERSION); - size -= t; - next += t; - - /* Registers */ - t = scnprintf(next, size, - "OTGSC: 0x%08x\n" - "PORTSC: 0x%08x\n" - "USBMODE: 0x%08x\n" - "USBCMD: 0x%08x\n" - "USBSTS: 0x%08x\n" - "USBINTR: 0x%08x\n", - fsl_readl(&usb_dr_regs->otgsc), - fsl_readl(&usb_dr_regs->portsc), - fsl_readl(&usb_dr_regs->usbmode), - fsl_readl(&usb_dr_regs->usbcmd), - fsl_readl(&usb_dr_regs->usbsts), - fsl_readl(&usb_dr_regs->usbintr)); - size -= t; - next += t; - - /* State */ - t = scnprintf(next, size, - "OTG state: %s\n\n", - otg_state_string(fsl_otg_dev->phy.state)); - size -= t; - next += t; - - /* State Machine Variables */ - t = scnprintf(next, size, - "a_bus_req: %d\n" - "b_bus_req: %d\n" - "a_bus_resume: %d\n" - "a_bus_suspend: %d\n" - "a_conn: %d\n" - "a_sess_vld: %d\n" - "a_srp_det: %d\n" - "a_vbus_vld: %d\n" - "b_bus_resume: %d\n" - "b_bus_suspend: %d\n" - "b_conn: %d\n" - "b_se0_srp: %d\n" - "b_sess_end: %d\n" - "b_sess_vld: %d\n" - "id: %d\n", - fsm->a_bus_req, - fsm->b_bus_req, - fsm->a_bus_resume, - fsm->a_bus_suspend, - fsm->a_conn, - fsm->a_sess_vld, - fsm->a_srp_det, - fsm->a_vbus_vld, - fsm->b_bus_resume, - fsm->b_bus_suspend, - fsm->b_conn, - fsm->b_se0_srp, - fsm->b_sess_end, - fsm->b_sess_vld, - fsm->id); - size -= t; - next += t; - - spin_unlock_irqrestore(&fsm->lock, flags); - - return PAGE_SIZE - size; -} - -static DEVICE_ATTR(fsl_usb2_otg_state, S_IRUGO, show_fsl_usb2_otg_state, NULL); - - -/* Char driver interface to control some OTG input */ - -/* - * Handle some ioctl command, such as get otg - * status and set host suspend - */ -static long fsl_otg_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - u32 retval = 0; - - switch (cmd) { - case GET_OTG_STATUS: - retval = fsl_otg_dev->host_working; - break; - - case SET_A_SUSPEND_REQ: - fsl_otg_dev->fsm.a_suspend_req = arg; - break; - - case SET_A_BUS_DROP: - fsl_otg_dev->fsm.a_bus_drop = arg; - break; - - case SET_A_BUS_REQ: - fsl_otg_dev->fsm.a_bus_req = arg; - break; - - case SET_B_BUS_REQ: - fsl_otg_dev->fsm.b_bus_req = arg; - break; - - default: - break; - } - - otg_statemachine(&fsl_otg_dev->fsm); - - return retval; -} - -static int fsl_otg_open(struct inode *inode, struct file *file) -{ - return 0; -} - -static int fsl_otg_release(struct inode *inode, struct file *file) -{ - return 0; -} - -static const struct file_operations otg_fops = { - .owner = THIS_MODULE, - .llseek = NULL, - .read = NULL, - .write = NULL, - .unlocked_ioctl = fsl_otg_ioctl, - .open = fsl_otg_open, - .release = fsl_otg_release, -}; - -static int fsl_otg_probe(struct platform_device *pdev) -{ - int ret; - - if (!pdev->dev.platform_data) - return -ENODEV; - - /* configure the OTG */ - ret = fsl_otg_conf(pdev); - if (ret) { - dev_err(&pdev->dev, "Couldn't configure OTG module\n"); - return ret; - } - - /* start OTG */ - ret = usb_otg_start(pdev); - if (ret) { - dev_err(&pdev->dev, "Can't init FSL OTG device\n"); - return ret; - } - - ret = register_chrdev(FSL_OTG_MAJOR, FSL_OTG_NAME, &otg_fops); - if (ret) { - dev_err(&pdev->dev, "unable to register FSL OTG device\n"); - return ret; - } - - ret = device_create_file(&pdev->dev, &dev_attr_fsl_usb2_otg_state); - if (ret) - dev_warn(&pdev->dev, "Can't register sysfs attribute\n"); - - return ret; -} - -static int fsl_otg_remove(struct platform_device *pdev) -{ - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - - usb_remove_phy(&fsl_otg_dev->phy); - free_irq(fsl_otg_dev->irq, fsl_otg_dev); - - iounmap((void *)usb_dr_regs); - - fsl_otg_uninit_timers(); - kfree(fsl_otg_dev->phy.otg); - kfree(fsl_otg_dev); - - device_remove_file(&pdev->dev, &dev_attr_fsl_usb2_otg_state); - - unregister_chrdev(FSL_OTG_MAJOR, FSL_OTG_NAME); - - if (pdata->exit) - pdata->exit(pdev); - - return 0; -} - -struct platform_driver fsl_otg_driver = { - .probe = fsl_otg_probe, - .remove = fsl_otg_remove, - .driver = { - .name = driver_name, - .owner = THIS_MODULE, - }, -}; - -module_platform_driver(fsl_otg_driver); - -MODULE_DESCRIPTION(DRIVER_INFO); -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/fsl_otg.h b/drivers/usb/otg/fsl_otg.h deleted file mode 100644 index ca266280895..00000000000 --- a/drivers/usb/otg/fsl_otg.h +++ /dev/null @@ -1,406 +0,0 @@ -/* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "otg_fsm.h" -#include <linux/usb/otg.h> -#include <linux/ioctl.h> - -/* USB Command Register Bit Masks */ -#define USB_CMD_RUN_STOP (0x1<<0) -#define USB_CMD_CTRL_RESET (0x1<<1) -#define USB_CMD_PERIODIC_SCHEDULE_EN (0x1<<4) -#define USB_CMD_ASYNC_SCHEDULE_EN (0x1<<5) -#define USB_CMD_INT_AA_DOORBELL (0x1<<6) -#define USB_CMD_ASP (0x3<<8) -#define USB_CMD_ASYNC_SCH_PARK_EN (0x1<<11) -#define USB_CMD_SUTW (0x1<<13) -#define USB_CMD_ATDTW (0x1<<14) -#define USB_CMD_ITC (0xFF<<16) - -/* bit 15,3,2 are frame list size */ -#define USB_CMD_FRAME_SIZE_1024 (0x0<<15 | 0x0<<2) -#define USB_CMD_FRAME_SIZE_512 (0x0<<15 | 0x1<<2) -#define USB_CMD_FRAME_SIZE_256 (0x0<<15 | 0x2<<2) -#define USB_CMD_FRAME_SIZE_128 (0x0<<15 | 0x3<<2) -#define USB_CMD_FRAME_SIZE_64 (0x1<<15 | 0x0<<2) -#define USB_CMD_FRAME_SIZE_32 (0x1<<15 | 0x1<<2) -#define USB_CMD_FRAME_SIZE_16 (0x1<<15 | 0x2<<2) -#define USB_CMD_FRAME_SIZE_8 (0x1<<15 | 0x3<<2) - -/* bit 9-8 are async schedule park mode count */ -#define USB_CMD_ASP_00 (0x0<<8) -#define USB_CMD_ASP_01 (0x1<<8) -#define USB_CMD_ASP_10 (0x2<<8) -#define USB_CMD_ASP_11 (0x3<<8) -#define USB_CMD_ASP_BIT_POS (8) - -/* bit 23-16 are interrupt threshold control */ -#define USB_CMD_ITC_NO_THRESHOLD (0x00<<16) -#define USB_CMD_ITC_1_MICRO_FRM (0x01<<16) -#define USB_CMD_ITC_2_MICRO_FRM (0x02<<16) -#define USB_CMD_ITC_4_MICRO_FRM (0x04<<16) -#define USB_CMD_ITC_8_MICRO_FRM (0x08<<16) -#define USB_CMD_ITC_16_MICRO_FRM (0x10<<16) -#define USB_CMD_ITC_32_MICRO_FRM (0x20<<16) -#define USB_CMD_ITC_64_MICRO_FRM (0x40<<16) -#define USB_CMD_ITC_BIT_POS (16) - -/* USB Status Register Bit Masks */ -#define USB_STS_INT (0x1<<0) -#define USB_STS_ERR (0x1<<1) -#define USB_STS_PORT_CHANGE (0x1<<2) -#define USB_STS_FRM_LST_ROLL (0x1<<3) -#define USB_STS_SYS_ERR (0x1<<4) -#define USB_STS_IAA (0x1<<5) -#define USB_STS_RESET_RECEIVED (0x1<<6) -#define USB_STS_SOF (0x1<<7) -#define USB_STS_DCSUSPEND (0x1<<8) -#define USB_STS_HC_HALTED (0x1<<12) -#define USB_STS_RCL (0x1<<13) -#define USB_STS_PERIODIC_SCHEDULE (0x1<<14) -#define USB_STS_ASYNC_SCHEDULE (0x1<<15) - -/* USB Interrupt Enable Register Bit Masks */ -#define USB_INTR_INT_EN (0x1<<0) -#define USB_INTR_ERR_INT_EN (0x1<<1) -#define USB_INTR_PC_DETECT_EN (0x1<<2) -#define USB_INTR_FRM_LST_ROLL_EN (0x1<<3) -#define USB_INTR_SYS_ERR_EN (0x1<<4) -#define USB_INTR_ASYN_ADV_EN (0x1<<5) -#define USB_INTR_RESET_EN (0x1<<6) -#define USB_INTR_SOF_EN (0x1<<7) -#define USB_INTR_DEVICE_SUSPEND (0x1<<8) - -/* Device Address bit masks */ -#define USB_DEVICE_ADDRESS_MASK (0x7F<<25) -#define USB_DEVICE_ADDRESS_BIT_POS (25) -/* PORTSC Register Bit Masks,Only one PORT in OTG mode*/ -#define PORTSC_CURRENT_CONNECT_STATUS (0x1<<0) -#define PORTSC_CONNECT_STATUS_CHANGE (0x1<<1) -#define PORTSC_PORT_ENABLE (0x1<<2) -#define PORTSC_PORT_EN_DIS_CHANGE (0x1<<3) -#define PORTSC_OVER_CURRENT_ACT (0x1<<4) -#define PORTSC_OVER_CUURENT_CHG (0x1<<5) -#define PORTSC_PORT_FORCE_RESUME (0x1<<6) -#define PORTSC_PORT_SUSPEND (0x1<<7) -#define PORTSC_PORT_RESET (0x1<<8) -#define PORTSC_LINE_STATUS_BITS (0x3<<10) -#define PORTSC_PORT_POWER (0x1<<12) -#define PORTSC_PORT_INDICTOR_CTRL (0x3<<14) -#define PORTSC_PORT_TEST_CTRL (0xF<<16) -#define PORTSC_WAKE_ON_CONNECT_EN (0x1<<20) -#define PORTSC_WAKE_ON_CONNECT_DIS (0x1<<21) -#define PORTSC_WAKE_ON_OVER_CURRENT (0x1<<22) -#define PORTSC_PHY_LOW_POWER_SPD (0x1<<23) -#define PORTSC_PORT_FORCE_FULL_SPEED (0x1<<24) -#define PORTSC_PORT_SPEED_MASK (0x3<<26) -#define PORTSC_TRANSCEIVER_WIDTH (0x1<<28) -#define PORTSC_PHY_TYPE_SEL (0x3<<30) -/* bit 11-10 are line status */ -#define PORTSC_LINE_STATUS_SE0 (0x0<<10) -#define PORTSC_LINE_STATUS_JSTATE (0x1<<10) -#define PORTSC_LINE_STATUS_KSTATE (0x2<<10) -#define PORTSC_LINE_STATUS_UNDEF (0x3<<10) -#define PORTSC_LINE_STATUS_BIT_POS (10) - -/* bit 15-14 are port indicator control */ -#define PORTSC_PIC_OFF (0x0<<14) -#define PORTSC_PIC_AMBER (0x1<<14) -#define PORTSC_PIC_GREEN (0x2<<14) -#define PORTSC_PIC_UNDEF (0x3<<14) -#define PORTSC_PIC_BIT_POS (14) - -/* bit 19-16 are port test control */ -#define PORTSC_PTC_DISABLE (0x0<<16) -#define PORTSC_PTC_JSTATE (0x1<<16) -#define PORTSC_PTC_KSTATE (0x2<<16) -#define PORTSC_PTC_SEQNAK (0x3<<16) -#define PORTSC_PTC_PACKET (0x4<<16) -#define PORTSC_PTC_FORCE_EN (0x5<<16) -#define PORTSC_PTC_BIT_POS (16) - -/* bit 27-26 are port speed */ -#define PORTSC_PORT_SPEED_FULL (0x0<<26) -#define PORTSC_PORT_SPEED_LOW (0x1<<26) -#define PORTSC_PORT_SPEED_HIGH (0x2<<26) -#define PORTSC_PORT_SPEED_UNDEF (0x3<<26) -#define PORTSC_SPEED_BIT_POS (26) - -/* bit 28 is parallel transceiver width for UTMI interface */ -#define PORTSC_PTW (0x1<<28) -#define PORTSC_PTW_8BIT (0x0<<28) -#define PORTSC_PTW_16BIT (0x1<<28) - -/* bit 31-30 are port transceiver select */ -#define PORTSC_PTS_UTMI (0x0<<30) -#define PORTSC_PTS_ULPI (0x2<<30) -#define PORTSC_PTS_FSLS_SERIAL (0x3<<30) -#define PORTSC_PTS_BIT_POS (30) - -#define PORTSC_W1C_BITS \ - (PORTSC_CONNECT_STATUS_CHANGE | \ - PORTSC_PORT_EN_DIS_CHANGE | \ - PORTSC_OVER_CUURENT_CHG) - -/* OTG Status Control Register Bit Masks */ -#define OTGSC_CTRL_VBUS_DISCHARGE (0x1<<0) -#define OTGSC_CTRL_VBUS_CHARGE (0x1<<1) -#define OTGSC_CTRL_OTG_TERMINATION (0x1<<3) -#define OTGSC_CTRL_DATA_PULSING (0x1<<4) -#define OTGSC_CTRL_ID_PULL_EN (0x1<<5) -#define OTGSC_HA_DATA_PULSE (0x1<<6) -#define OTGSC_HA_BA (0x1<<7) -#define OTGSC_STS_USB_ID (0x1<<8) -#define OTGSC_STS_A_VBUS_VALID (0x1<<9) -#define OTGSC_STS_A_SESSION_VALID (0x1<<10) -#define OTGSC_STS_B_SESSION_VALID (0x1<<11) -#define OTGSC_STS_B_SESSION_END (0x1<<12) -#define OTGSC_STS_1MS_TOGGLE (0x1<<13) -#define OTGSC_STS_DATA_PULSING (0x1<<14) -#define OTGSC_INTSTS_USB_ID (0x1<<16) -#define OTGSC_INTSTS_A_VBUS_VALID (0x1<<17) -#define OTGSC_INTSTS_A_SESSION_VALID (0x1<<18) -#define OTGSC_INTSTS_B_SESSION_VALID (0x1<<19) -#define OTGSC_INTSTS_B_SESSION_END (0x1<<20) -#define OTGSC_INTSTS_1MS (0x1<<21) -#define OTGSC_INTSTS_DATA_PULSING (0x1<<22) -#define OTGSC_INTR_USB_ID_EN (0x1<<24) -#define OTGSC_INTR_A_VBUS_VALID_EN (0x1<<25) -#define OTGSC_INTR_A_SESSION_VALID_EN (0x1<<26) -#define OTGSC_INTR_B_SESSION_VALID_EN (0x1<<27) -#define OTGSC_INTR_B_SESSION_END_EN (0x1<<28) -#define OTGSC_INTR_1MS_TIMER_EN (0x1<<29) -#define OTGSC_INTR_DATA_PULSING_EN (0x1<<30) -#define OTGSC_INTSTS_MASK (0x00ff0000) - -/* USB MODE Register Bit Masks */ -#define USB_MODE_CTRL_MODE_IDLE (0x0<<0) -#define USB_MODE_CTRL_MODE_DEVICE (0x2<<0) -#define USB_MODE_CTRL_MODE_HOST (0x3<<0) -#define USB_MODE_CTRL_MODE_RSV (0x1<<0) -#define USB_MODE_SETUP_LOCK_OFF (0x1<<3) -#define USB_MODE_STREAM_DISABLE (0x1<<4) -#define USB_MODE_ES (0x1<<2) /* Endian Select */ - -/* control Register Bit Masks */ -#define USB_CTRL_IOENB (0x1<<2) -#define USB_CTRL_ULPI_INT0EN (0x1<<0) - -/* BCSR5 */ -#define BCSR5_INT_USB (0x02) - -/* USB module clk cfg */ -#define SCCR_OFFS (0xA08) -#define SCCR_USB_CLK_DISABLE (0x00000000) /* USB clk disable */ -#define SCCR_USB_MPHCM_11 (0x00c00000) -#define SCCR_USB_MPHCM_01 (0x00400000) -#define SCCR_USB_MPHCM_10 (0x00800000) -#define SCCR_USB_DRCM_11 (0x00300000) -#define SCCR_USB_DRCM_01 (0x00100000) -#define SCCR_USB_DRCM_10 (0x00200000) - -#define SICRL_OFFS (0x114) -#define SICRL_USB0 (0x40000000) -#define SICRL_USB1 (0x20000000) - -#define SICRH_OFFS (0x118) -#define SICRH_USB_UTMI (0x00020000) - -/* OTG interrupt enable bit masks */ -#define OTGSC_INTERRUPT_ENABLE_BITS_MASK \ - (OTGSC_INTR_USB_ID_EN | \ - OTGSC_INTR_1MS_TIMER_EN | \ - OTGSC_INTR_A_VBUS_VALID_EN | \ - OTGSC_INTR_A_SESSION_VALID_EN | \ - OTGSC_INTR_B_SESSION_VALID_EN | \ - OTGSC_INTR_B_SESSION_END_EN | \ - OTGSC_INTR_DATA_PULSING_EN) - -/* OTG interrupt status bit masks */ -#define OTGSC_INTERRUPT_STATUS_BITS_MASK \ - (OTGSC_INTSTS_USB_ID | \ - OTGSC_INTR_1MS_TIMER_EN | \ - OTGSC_INTSTS_A_VBUS_VALID | \ - OTGSC_INTSTS_A_SESSION_VALID | \ - OTGSC_INTSTS_B_SESSION_VALID | \ - OTGSC_INTSTS_B_SESSION_END | \ - OTGSC_INTSTS_DATA_PULSING) - -/* - * A-DEVICE timing constants - */ - -/* Wait for VBUS Rise */ -#define TA_WAIT_VRISE (100) /* a_wait_vrise 100 ms, section: 6.6.5.1 */ - -/* Wait for B-Connect */ -#define TA_WAIT_BCON (10000) /* a_wait_bcon > 1 sec, section: 6.6.5.2 - * This is only used to get out of - * OTG_STATE_A_WAIT_BCON state if there was - * no connection for these many milliseconds - */ - -/* A-Idle to B-Disconnect */ -/* It is necessary for this timer to be more than 750 ms because of a bug in OPT - * test 5.4 in which B OPT disconnects after 750 ms instead of 75ms as stated - * in the test description - */ -#define TA_AIDL_BDIS (5000) /* a_suspend minimum 200 ms, section: 6.6.5.3 */ - -/* B-Idle to A-Disconnect */ -#define TA_BIDL_ADIS (12) /* 3 to 200 ms */ - -/* B-device timing constants */ - - -/* Data-Line Pulse Time*/ -#define TB_DATA_PLS (10) /* b_srp_init,continue 5~10ms, section:5.3.3 */ -#define TB_DATA_PLS_MIN (5) /* minimum 5 ms */ -#define TB_DATA_PLS_MAX (10) /* maximum 10 ms */ - -/* SRP Initiate Time */ -#define TB_SRP_INIT (100) /* b_srp_init,maximum 100 ms, section:5.3.8 */ - -/* SRP Fail Time */ -#define TB_SRP_FAIL (7000) /* b_srp_init,Fail time 5~30s, section:6.8.2.2*/ - -/* SRP result wait time */ -#define TB_SRP_WAIT (60) - -/* VBus time */ -#define TB_VBUS_PLS (30) /* time to keep vbus pulsing asserted */ - -/* Discharge time */ -/* This time should be less than 10ms. It varies from system to system. */ -#define TB_VBUS_DSCHRG (8) - -/* A-SE0 to B-Reset */ -#define TB_ASE0_BRST (20) /* b_wait_acon, mini 3.125 ms,section:6.8.2.4 */ - -/* A bus suspend timer before we can switch to b_wait_aconn */ -#define TB_A_SUSPEND (7) -#define TB_BUS_RESUME (12) - -/* SE0 Time Before SRP */ -#define TB_SE0_SRP (2) /* b_idle,minimum 2 ms, section:5.3.2 */ - -#define SET_OTG_STATE(otg_ptr, newstate) ((otg_ptr)->state = newstate) - -struct usb_dr_mmap { - /* Capability register */ - u8 res1[256]; - u16 caplength; /* Capability Register Length */ - u16 hciversion; /* Host Controller Interface Version */ - u32 hcsparams; /* Host Controller Structual Parameters */ - u32 hccparams; /* Host Controller Capability Parameters */ - u8 res2[20]; - u32 dciversion; /* Device Controller Interface Version */ - u32 dccparams; /* Device Controller Capability Parameters */ - u8 res3[24]; - /* Operation register */ - u32 usbcmd; /* USB Command Register */ - u32 usbsts; /* USB Status Register */ - u32 usbintr; /* USB Interrupt Enable Register */ - u32 frindex; /* Frame Index Register */ - u8 res4[4]; - u32 deviceaddr; /* Device Address */ - u32 endpointlistaddr; /* Endpoint List Address Register */ - u8 res5[4]; - u32 burstsize; /* Master Interface Data Burst Size Register */ - u32 txttfilltuning; /* Transmit FIFO Tuning Controls Register */ - u8 res6[8]; - u32 ulpiview; /* ULPI register access */ - u8 res7[12]; - u32 configflag; /* Configure Flag Register */ - u32 portsc; /* Port 1 Status and Control Register */ - u8 res8[28]; - u32 otgsc; /* On-The-Go Status and Control */ - u32 usbmode; /* USB Mode Register */ - u32 endptsetupstat; /* Endpoint Setup Status Register */ - u32 endpointprime; /* Endpoint Initialization Register */ - u32 endptflush; /* Endpoint Flush Register */ - u32 endptstatus; /* Endpoint Status Register */ - u32 endptcomplete; /* Endpoint Complete Register */ - u32 endptctrl[6]; /* Endpoint Control Registers */ - u8 res9[552]; - u32 snoop1; - u32 snoop2; - u32 age_cnt_thresh; /* Age Count Threshold Register */ - u32 pri_ctrl; /* Priority Control Register */ - u32 si_ctrl; /* System Interface Control Register */ - u8 res10[236]; - u32 control; /* General Purpose Control Register */ -}; - -struct fsl_otg_timer { - unsigned long expires; /* Number of count increase to timeout */ - unsigned long count; /* Tick counter */ - void (*function)(unsigned long); /* Timeout function */ - unsigned long data; /* Data passed to function */ - struct list_head list; -}; - -inline struct fsl_otg_timer *otg_timer_initializer -(void (*function)(unsigned long), unsigned long expires, unsigned long data) -{ - struct fsl_otg_timer *timer; - - timer = kmalloc(sizeof(struct fsl_otg_timer), GFP_KERNEL); - if (!timer) - return NULL; - timer->function = function; - timer->expires = expires; - timer->data = data; - return timer; -} - -struct fsl_otg { - struct usb_phy phy; - struct otg_fsm fsm; - struct usb_dr_mmap *dr_mem_map; - struct delayed_work otg_event; - - /* used for usb host */ - struct work_struct work_wq; - u8 host_working; - - int irq; -}; - -struct fsl_otg_config { - u8 otg_port; -}; - -/* For SRP and HNP handle */ -#define FSL_OTG_MAJOR 240 -#define FSL_OTG_NAME "fsl-usb2-otg" -/* Command to OTG driver ioctl */ -#define OTG_IOCTL_MAGIC FSL_OTG_MAJOR -/* if otg work as host, it should return 1, otherwise return 0 */ -#define GET_OTG_STATUS _IOR(OTG_IOCTL_MAGIC, 1, int) -#define SET_A_SUSPEND_REQ _IOW(OTG_IOCTL_MAGIC, 2, int) -#define SET_A_BUS_DROP _IOW(OTG_IOCTL_MAGIC, 3, int) -#define SET_A_BUS_REQ _IOW(OTG_IOCTL_MAGIC, 4, int) -#define SET_B_BUS_REQ _IOW(OTG_IOCTL_MAGIC, 5, int) -#define GET_A_SUSPEND_REQ _IOR(OTG_IOCTL_MAGIC, 6, int) -#define GET_A_BUS_DROP _IOR(OTG_IOCTL_MAGIC, 7, int) -#define GET_A_BUS_REQ _IOR(OTG_IOCTL_MAGIC, 8, int) -#define GET_B_BUS_REQ _IOR(OTG_IOCTL_MAGIC, 9, int) - -void fsl_otg_add_timer(void *timer); -void fsl_otg_del_timer(void *timer); -void fsl_otg_pulse_vbus(void); diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c deleted file mode 100644 index a7d4ac59198..00000000000 --- a/drivers/usb/otg/gpio_vbus.c +++ /dev/null @@ -1,416 +0,0 @@ -/* - * gpio-vbus.c - simple GPIO VBUS sensing driver for B peripheral devices - * - * Copyright (c) 2008 Philipp Zabel <philipp.zabel@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/usb.h> -#include <linux/workqueue.h> - -#include <linux/regulator/consumer.h> - -#include <linux/usb/gadget.h> -#include <linux/usb/gpio_vbus.h> -#include <linux/usb/otg.h> - - -/* - * A simple GPIO VBUS sensing driver for B peripheral only devices - * with internal transceivers. It can control a D+ pullup GPIO and - * a regulator to limit the current drawn from VBUS. - * - * Needs to be loaded before the UDC driver that will use it. - */ -struct gpio_vbus_data { - struct usb_phy phy; - struct device *dev; - struct regulator *vbus_draw; - int vbus_draw_enabled; - unsigned mA; - struct delayed_work work; - int vbus; - int irq; -}; - - -/* - * This driver relies on "both edges" triggering. VBUS has 100 msec to - * stabilize, so the peripheral controller driver may need to cope with - * some bouncing due to current surges (e.g. charging local capacitance) - * and contact chatter. - * - * REVISIT in desperate straits, toggling between rising and falling - * edges might be workable. - */ -#define VBUS_IRQ_FLAGS \ - (IRQF_SHARED | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING) - - -/* interface to regulator framework */ -static void set_vbus_draw(struct gpio_vbus_data *gpio_vbus, unsigned mA) -{ - struct regulator *vbus_draw = gpio_vbus->vbus_draw; - int enabled; - - if (!vbus_draw) - return; - - enabled = gpio_vbus->vbus_draw_enabled; - if (mA) { - regulator_set_current_limit(vbus_draw, 0, 1000 * mA); - if (!enabled) { - regulator_enable(vbus_draw); - gpio_vbus->vbus_draw_enabled = 1; - } - } else { - if (enabled) { - regulator_disable(vbus_draw); - gpio_vbus->vbus_draw_enabled = 0; - } - } - gpio_vbus->mA = mA; -} - -static int is_vbus_powered(struct gpio_vbus_mach_info *pdata) -{ - int vbus; - - vbus = gpio_get_value(pdata->gpio_vbus); - if (pdata->gpio_vbus_inverted) - vbus = !vbus; - - return vbus; -} - -static void gpio_vbus_work(struct work_struct *work) -{ - struct gpio_vbus_data *gpio_vbus = - container_of(work, struct gpio_vbus_data, work.work); - struct gpio_vbus_mach_info *pdata = gpio_vbus->dev->platform_data; - int gpio, status, vbus; - - if (!gpio_vbus->phy.otg->gadget) - return; - - vbus = is_vbus_powered(pdata); - if ((vbus ^ gpio_vbus->vbus) == 0) - return; - gpio_vbus->vbus = vbus; - - /* Peripheral controllers which manage the pullup themselves won't have - * gpio_pullup configured here. If it's configured here, we'll do what - * isp1301_omap::b_peripheral() does and enable the pullup here... although - * that may complicate usb_gadget_{,dis}connect() support. - */ - gpio = pdata->gpio_pullup; - - if (vbus) { - status = USB_EVENT_VBUS; - gpio_vbus->phy.state = OTG_STATE_B_PERIPHERAL; - gpio_vbus->phy.last_event = status; - usb_gadget_vbus_connect(gpio_vbus->phy.otg->gadget); - - /* drawing a "unit load" is *always* OK, except for OTG */ - set_vbus_draw(gpio_vbus, 100); - - /* optionally enable D+ pullup */ - if (gpio_is_valid(gpio)) - gpio_set_value(gpio, !pdata->gpio_pullup_inverted); - - atomic_notifier_call_chain(&gpio_vbus->phy.notifier, - status, gpio_vbus->phy.otg->gadget); - } else { - /* optionally disable D+ pullup */ - if (gpio_is_valid(gpio)) - gpio_set_value(gpio, pdata->gpio_pullup_inverted); - - set_vbus_draw(gpio_vbus, 0); - - usb_gadget_vbus_disconnect(gpio_vbus->phy.otg->gadget); - status = USB_EVENT_NONE; - gpio_vbus->phy.state = OTG_STATE_B_IDLE; - gpio_vbus->phy.last_event = status; - - atomic_notifier_call_chain(&gpio_vbus->phy.notifier, - status, gpio_vbus->phy.otg->gadget); - } -} - -/* VBUS change IRQ handler */ -static irqreturn_t gpio_vbus_irq(int irq, void *data) -{ - struct platform_device *pdev = data; - struct gpio_vbus_mach_info *pdata = pdev->dev.platform_data; - struct gpio_vbus_data *gpio_vbus = platform_get_drvdata(pdev); - struct usb_otg *otg = gpio_vbus->phy.otg; - - dev_dbg(&pdev->dev, "VBUS %s (gadget: %s)\n", - is_vbus_powered(pdata) ? "supplied" : "inactive", - otg->gadget ? otg->gadget->name : "none"); - - if (otg->gadget) - schedule_delayed_work(&gpio_vbus->work, msecs_to_jiffies(100)); - - return IRQ_HANDLED; -} - -/* OTG transceiver interface */ - -/* bind/unbind the peripheral controller */ -static int gpio_vbus_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - struct gpio_vbus_data *gpio_vbus; - struct gpio_vbus_mach_info *pdata; - struct platform_device *pdev; - int gpio; - - gpio_vbus = container_of(otg->phy, struct gpio_vbus_data, phy); - pdev = to_platform_device(gpio_vbus->dev); - pdata = gpio_vbus->dev->platform_data; - gpio = pdata->gpio_pullup; - - if (!gadget) { - dev_dbg(&pdev->dev, "unregistering gadget '%s'\n", - otg->gadget->name); - - /* optionally disable D+ pullup */ - if (gpio_is_valid(gpio)) - gpio_set_value(gpio, pdata->gpio_pullup_inverted); - - set_vbus_draw(gpio_vbus, 0); - - usb_gadget_vbus_disconnect(otg->gadget); - otg->phy->state = OTG_STATE_UNDEFINED; - - otg->gadget = NULL; - return 0; - } - - otg->gadget = gadget; - dev_dbg(&pdev->dev, "registered gadget '%s'\n", gadget->name); - - /* initialize connection state */ - gpio_vbus->vbus = 0; /* start with disconnected */ - gpio_vbus_irq(gpio_vbus->irq, pdev); - return 0; -} - -/* effective for B devices, ignored for A-peripheral */ -static int gpio_vbus_set_power(struct usb_phy *phy, unsigned mA) -{ - struct gpio_vbus_data *gpio_vbus; - - gpio_vbus = container_of(phy, struct gpio_vbus_data, phy); - - if (phy->state == OTG_STATE_B_PERIPHERAL) - set_vbus_draw(gpio_vbus, mA); - return 0; -} - -/* for non-OTG B devices: set/clear transceiver suspend mode */ -static int gpio_vbus_set_suspend(struct usb_phy *phy, int suspend) -{ - struct gpio_vbus_data *gpio_vbus; - - gpio_vbus = container_of(phy, struct gpio_vbus_data, phy); - - /* draw max 0 mA from vbus in suspend mode; or the previously - * recorded amount of current if not suspended - * - * NOTE: high powered configs (mA > 100) may draw up to 2.5 mA - * if they're wake-enabled ... we don't handle that yet. - */ - return gpio_vbus_set_power(phy, suspend ? 0 : gpio_vbus->mA); -} - -/* platform driver interface */ - -static int __init gpio_vbus_probe(struct platform_device *pdev) -{ - struct gpio_vbus_mach_info *pdata = pdev->dev.platform_data; - struct gpio_vbus_data *gpio_vbus; - struct resource *res; - int err, gpio, irq; - unsigned long irqflags; - - if (!pdata || !gpio_is_valid(pdata->gpio_vbus)) - return -EINVAL; - gpio = pdata->gpio_vbus; - - gpio_vbus = kzalloc(sizeof(struct gpio_vbus_data), GFP_KERNEL); - if (!gpio_vbus) - return -ENOMEM; - - gpio_vbus->phy.otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL); - if (!gpio_vbus->phy.otg) { - kfree(gpio_vbus); - return -ENOMEM; - } - - platform_set_drvdata(pdev, gpio_vbus); - gpio_vbus->dev = &pdev->dev; - gpio_vbus->phy.label = "gpio-vbus"; - gpio_vbus->phy.set_power = gpio_vbus_set_power; - gpio_vbus->phy.set_suspend = gpio_vbus_set_suspend; - gpio_vbus->phy.state = OTG_STATE_UNDEFINED; - - gpio_vbus->phy.otg->phy = &gpio_vbus->phy; - gpio_vbus->phy.otg->set_peripheral = gpio_vbus_set_peripheral; - - err = gpio_request(gpio, "vbus_detect"); - if (err) { - dev_err(&pdev->dev, "can't request vbus gpio %d, err: %d\n", - gpio, err); - goto err_gpio; - } - gpio_direction_input(gpio); - - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (res) { - irq = res->start; - irqflags = (res->flags & IRQF_TRIGGER_MASK) | IRQF_SHARED; - } else { - irq = gpio_to_irq(gpio); - irqflags = VBUS_IRQ_FLAGS; - } - - gpio_vbus->irq = irq; - - /* if data line pullup is in use, initialize it to "not pulling up" */ - gpio = pdata->gpio_pullup; - if (gpio_is_valid(gpio)) { - err = gpio_request(gpio, "udc_pullup"); - if (err) { - dev_err(&pdev->dev, - "can't request pullup gpio %d, err: %d\n", - gpio, err); - gpio_free(pdata->gpio_vbus); - goto err_gpio; - } - gpio_direction_output(gpio, pdata->gpio_pullup_inverted); - } - - err = request_irq(irq, gpio_vbus_irq, irqflags, "vbus_detect", pdev); - if (err) { - dev_err(&pdev->dev, "can't request irq %i, err: %d\n", - irq, err); - goto err_irq; - } - - ATOMIC_INIT_NOTIFIER_HEAD(&gpio_vbus->phy.notifier); - - INIT_DELAYED_WORK(&gpio_vbus->work, gpio_vbus_work); - - gpio_vbus->vbus_draw = regulator_get(&pdev->dev, "vbus_draw"); - if (IS_ERR(gpio_vbus->vbus_draw)) { - dev_dbg(&pdev->dev, "can't get vbus_draw regulator, err: %ld\n", - PTR_ERR(gpio_vbus->vbus_draw)); - gpio_vbus->vbus_draw = NULL; - } - - /* only active when a gadget is registered */ - err = usb_add_phy(&gpio_vbus->phy, USB_PHY_TYPE_USB2); - if (err) { - dev_err(&pdev->dev, "can't register transceiver, err: %d\n", - err); - goto err_otg; - } - - device_init_wakeup(&pdev->dev, pdata->wakeup); - - return 0; -err_otg: - regulator_put(gpio_vbus->vbus_draw); - free_irq(irq, pdev); -err_irq: - if (gpio_is_valid(pdata->gpio_pullup)) - gpio_free(pdata->gpio_pullup); - gpio_free(pdata->gpio_vbus); -err_gpio: - platform_set_drvdata(pdev, NULL); - kfree(gpio_vbus->phy.otg); - kfree(gpio_vbus); - return err; -} - -static int __exit gpio_vbus_remove(struct platform_device *pdev) -{ - struct gpio_vbus_data *gpio_vbus = platform_get_drvdata(pdev); - struct gpio_vbus_mach_info *pdata = pdev->dev.platform_data; - int gpio = pdata->gpio_vbus; - - device_init_wakeup(&pdev->dev, 0); - cancel_delayed_work_sync(&gpio_vbus->work); - regulator_put(gpio_vbus->vbus_draw); - - usb_remove_phy(&gpio_vbus->phy); - - free_irq(gpio_vbus->irq, pdev); - if (gpio_is_valid(pdata->gpio_pullup)) - gpio_free(pdata->gpio_pullup); - gpio_free(gpio); - platform_set_drvdata(pdev, NULL); - kfree(gpio_vbus->phy.otg); - kfree(gpio_vbus); - - return 0; -} - -#ifdef CONFIG_PM -static int gpio_vbus_pm_suspend(struct device *dev) -{ - struct gpio_vbus_data *gpio_vbus = dev_get_drvdata(dev); - - if (device_may_wakeup(dev)) - enable_irq_wake(gpio_vbus->irq); - - return 0; -} - -static int gpio_vbus_pm_resume(struct device *dev) -{ - struct gpio_vbus_data *gpio_vbus = dev_get_drvdata(dev); - - if (device_may_wakeup(dev)) - disable_irq_wake(gpio_vbus->irq); - - return 0; -} - -static const struct dev_pm_ops gpio_vbus_dev_pm_ops = { - .suspend = gpio_vbus_pm_suspend, - .resume = gpio_vbus_pm_resume, -}; -#endif - -/* NOTE: the gpio-vbus device may *NOT* be hotplugged */ - -MODULE_ALIAS("platform:gpio-vbus"); - -static struct platform_driver gpio_vbus_driver = { - .driver = { - .name = "gpio-vbus", - .owner = THIS_MODULE, -#ifdef CONFIG_PM - .pm = &gpio_vbus_dev_pm_ops, -#endif - }, - .remove = __exit_p(gpio_vbus_remove), -}; - -module_platform_driver_probe(gpio_vbus_driver, gpio_vbus_probe); - -MODULE_DESCRIPTION("simple GPIO controlled OTG transceiver driver"); -MODULE_AUTHOR("Philipp Zabel"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c deleted file mode 100644 index af9cb11626b..00000000000 --- a/drivers/usb/otg/isp1301_omap.c +++ /dev/null @@ -1,1656 +0,0 @@ -/* - * isp1301_omap - ISP 1301 USB transceiver, talking to OMAP OTG controller - * - * Copyright (C) 2004 Texas Instruments - * Copyright (C) 2004 David Brownell - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/i2c.h> -#include <linux/workqueue.h> - -#include <asm/irq.h> -#include <asm/mach-types.h> - -#include <mach/mux.h> - -#include <mach/usb.h> - -#ifndef DEBUG -#undef VERBOSE -#endif - - -#define DRIVER_VERSION "24 August 2004" -#define DRIVER_NAME (isp1301_driver.driver.name) - -MODULE_DESCRIPTION("ISP1301 USB OTG Transceiver Driver"); -MODULE_LICENSE("GPL"); - -struct isp1301 { - struct usb_phy phy; - struct i2c_client *client; - void (*i2c_release)(struct device *dev); - - int irq_type; - - u32 last_otg_ctrl; - unsigned working:1; - - struct timer_list timer; - - /* use keventd context to change the state for us */ - struct work_struct work; - - unsigned long todo; -# define WORK_UPDATE_ISP 0 /* update ISP from OTG */ -# define WORK_UPDATE_OTG 1 /* update OTG from ISP */ -# define WORK_HOST_RESUME 4 /* resume host */ -# define WORK_TIMER 6 /* timer fired */ -# define WORK_STOP 7 /* don't resubmit */ -}; - - -/* bits in OTG_CTRL */ - -#define OTG_XCEIV_OUTPUTS \ - (OTG_ASESSVLD|OTG_BSESSEND|OTG_BSESSVLD|OTG_VBUSVLD|OTG_ID) -#define OTG_XCEIV_INPUTS \ - (OTG_PULLDOWN|OTG_PULLUP|OTG_DRV_VBUS|OTG_PD_VBUS|OTG_PU_VBUS|OTG_PU_ID) -#define OTG_CTRL_BITS \ - (OTG_A_BUSREQ|OTG_A_SETB_HNPEN|OTG_B_BUSREQ|OTG_B_HNPEN|OTG_BUSDROP) - /* and OTG_PULLUP is sometimes written */ - -#define OTG_CTRL_MASK (OTG_DRIVER_SEL| \ - OTG_XCEIV_OUTPUTS|OTG_XCEIV_INPUTS| \ - OTG_CTRL_BITS) - - -/*-------------------------------------------------------------------------*/ - -/* board-specific PM hooks */ - -#if defined(CONFIG_MACH_OMAP_H2) || defined(CONFIG_MACH_OMAP_H3) - -#if defined(CONFIG_TPS65010) || defined(CONFIG_TPS65010_MODULE) - -#include <linux/i2c/tps65010.h> - -#else - -static inline int tps65010_set_vbus_draw(unsigned mA) -{ - pr_debug("tps65010: draw %d mA (STUB)\n", mA); - return 0; -} - -#endif - -static void enable_vbus_draw(struct isp1301 *isp, unsigned mA) -{ - int status = tps65010_set_vbus_draw(mA); - if (status < 0) - pr_debug(" VBUS %d mA error %d\n", mA, status); -} - -#else - -static void enable_vbus_draw(struct isp1301 *isp, unsigned mA) -{ - /* H4 controls this by DIP switch S2.4; no soft control. - * ON means the charger is always enabled. Leave it OFF - * unless the OTG port is used only in B-peripheral mode. - */ -} - -#endif - -static void enable_vbus_source(struct isp1301 *isp) -{ - /* this board won't supply more than 8mA vbus power. - * some boards can switch a 100ma "unit load" (or more). - */ -} - - -/* products will deliver OTG messages with LEDs, GUI, etc */ -static inline void notresponding(struct isp1301 *isp) -{ - printk(KERN_NOTICE "OTG device not responding.\n"); -} - - -/*-------------------------------------------------------------------------*/ - -static struct i2c_driver isp1301_driver; - -/* smbus apis are used for portability */ - -static inline u8 -isp1301_get_u8(struct isp1301 *isp, u8 reg) -{ - return i2c_smbus_read_byte_data(isp->client, reg + 0); -} - -static inline int -isp1301_get_u16(struct isp1301 *isp, u8 reg) -{ - return i2c_smbus_read_word_data(isp->client, reg); -} - -static inline int -isp1301_set_bits(struct isp1301 *isp, u8 reg, u8 bits) -{ - return i2c_smbus_write_byte_data(isp->client, reg + 0, bits); -} - -static inline int -isp1301_clear_bits(struct isp1301 *isp, u8 reg, u8 bits) -{ - return i2c_smbus_write_byte_data(isp->client, reg + 1, bits); -} - -/*-------------------------------------------------------------------------*/ - -/* identification */ -#define ISP1301_VENDOR_ID 0x00 /* u16 read */ -#define ISP1301_PRODUCT_ID 0x02 /* u16 read */ -#define ISP1301_BCD_DEVICE 0x14 /* u16 read */ - -#define I2C_VENDOR_ID_PHILIPS 0x04cc -#define I2C_PRODUCT_ID_PHILIPS_1301 0x1301 - -/* operational registers */ -#define ISP1301_MODE_CONTROL_1 0x04 /* u8 read, set, +1 clear */ -# define MC1_SPEED (1 << 0) -# define MC1_SUSPEND (1 << 1) -# define MC1_DAT_SE0 (1 << 2) -# define MC1_TRANSPARENT (1 << 3) -# define MC1_BDIS_ACON_EN (1 << 4) -# define MC1_OE_INT_EN (1 << 5) -# define MC1_UART_EN (1 << 6) -# define MC1_MASK 0x7f -#define ISP1301_MODE_CONTROL_2 0x12 /* u8 read, set, +1 clear */ -# define MC2_GLOBAL_PWR_DN (1 << 0) -# define MC2_SPD_SUSP_CTRL (1 << 1) -# define MC2_BI_DI (1 << 2) -# define MC2_TRANSP_BDIR0 (1 << 3) -# define MC2_TRANSP_BDIR1 (1 << 4) -# define MC2_AUDIO_EN (1 << 5) -# define MC2_PSW_EN (1 << 6) -# define MC2_EN2V7 (1 << 7) -#define ISP1301_OTG_CONTROL_1 0x06 /* u8 read, set, +1 clear */ -# define OTG1_DP_PULLUP (1 << 0) -# define OTG1_DM_PULLUP (1 << 1) -# define OTG1_DP_PULLDOWN (1 << 2) -# define OTG1_DM_PULLDOWN (1 << 3) -# define OTG1_ID_PULLDOWN (1 << 4) -# define OTG1_VBUS_DRV (1 << 5) -# define OTG1_VBUS_DISCHRG (1 << 6) -# define OTG1_VBUS_CHRG (1 << 7) -#define ISP1301_OTG_STATUS 0x10 /* u8 readonly */ -# define OTG_B_SESS_END (1 << 6) -# define OTG_B_SESS_VLD (1 << 7) - -#define ISP1301_INTERRUPT_SOURCE 0x08 /* u8 read */ -#define ISP1301_INTERRUPT_LATCH 0x0A /* u8 read, set, +1 clear */ - -#define ISP1301_INTERRUPT_FALLING 0x0C /* u8 read, set, +1 clear */ -#define ISP1301_INTERRUPT_RISING 0x0E /* u8 read, set, +1 clear */ - -/* same bitfields in all interrupt registers */ -# define INTR_VBUS_VLD (1 << 0) -# define INTR_SESS_VLD (1 << 1) -# define INTR_DP_HI (1 << 2) -# define INTR_ID_GND (1 << 3) -# define INTR_DM_HI (1 << 4) -# define INTR_ID_FLOAT (1 << 5) -# define INTR_BDIS_ACON (1 << 6) -# define INTR_CR_INT (1 << 7) - -/*-------------------------------------------------------------------------*/ - -static inline const char *state_name(struct isp1301 *isp) -{ - return otg_state_string(isp->phy.state); -} - -/*-------------------------------------------------------------------------*/ - -/* NOTE: some of this ISP1301 setup is specific to H2 boards; - * not everything is guarded by board-specific checks, or even using - * omap_usb_config data to deduce MC1_DAT_SE0 and MC2_BI_DI. - * - * ALSO: this currently doesn't use ISP1301 low-power modes - * while OTG is running. - */ - -static void power_down(struct isp1301 *isp) -{ - isp->phy.state = OTG_STATE_UNDEFINED; - - // isp1301_set_bits(isp, ISP1301_MODE_CONTROL_2, MC2_GLOBAL_PWR_DN); - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_SUSPEND); - - isp1301_clear_bits(isp, ISP1301_OTG_CONTROL_1, OTG1_ID_PULLDOWN); - isp1301_clear_bits(isp, ISP1301_MODE_CONTROL_1, MC1_DAT_SE0); -} - -static void power_up(struct isp1301 *isp) -{ - // isp1301_clear_bits(isp, ISP1301_MODE_CONTROL_2, MC2_GLOBAL_PWR_DN); - isp1301_clear_bits(isp, ISP1301_MODE_CONTROL_1, MC1_SUSPEND); - - /* do this only when cpu is driving transceiver, - * so host won't see a low speed device... - */ - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_DAT_SE0); -} - -#define NO_HOST_SUSPEND - -static int host_suspend(struct isp1301 *isp) -{ -#ifdef NO_HOST_SUSPEND - return 0; -#else - struct device *dev; - - if (!isp->phy.otg->host) - return -ENODEV; - - /* Currently ASSUMES only the OTG port matters; - * other ports could be active... - */ - dev = isp->phy.otg->host->controller; - return dev->driver->suspend(dev, 3, 0); -#endif -} - -static int host_resume(struct isp1301 *isp) -{ -#ifdef NO_HOST_SUSPEND - return 0; -#else - struct device *dev; - - if (!isp->phy.otg->host) - return -ENODEV; - - dev = isp->phy.otg->host->controller; - return dev->driver->resume(dev, 0); -#endif -} - -static int gadget_suspend(struct isp1301 *isp) -{ - isp->phy.otg->gadget->b_hnp_enable = 0; - isp->phy.otg->gadget->a_hnp_support = 0; - isp->phy.otg->gadget->a_alt_hnp_support = 0; - return usb_gadget_vbus_disconnect(isp->phy.otg->gadget); -} - -/*-------------------------------------------------------------------------*/ - -#define TIMER_MINUTES 10 -#define TIMER_JIFFIES (TIMER_MINUTES * 60 * HZ) - -/* Almost all our I2C messaging comes from a work queue's task context. - * NOTE: guaranteeing certain response times might mean we shouldn't - * share keventd's work queue; a realtime task might be safest. - */ -static void isp1301_defer_work(struct isp1301 *isp, int work) -{ - int status; - - if (isp && !test_and_set_bit(work, &isp->todo)) { - (void) get_device(&isp->client->dev); - status = schedule_work(&isp->work); - if (!status && !isp->working) - dev_vdbg(&isp->client->dev, - "work item %d may be lost\n", work); - } -} - -/* called from irq handlers */ -static void a_idle(struct isp1301 *isp, const char *tag) -{ - u32 l; - - if (isp->phy.state == OTG_STATE_A_IDLE) - return; - - isp->phy.otg->default_a = 1; - if (isp->phy.otg->host) { - isp->phy.otg->host->is_b_host = 0; - host_suspend(isp); - } - if (isp->phy.otg->gadget) { - isp->phy.otg->gadget->is_a_peripheral = 1; - gadget_suspend(isp); - } - isp->phy.state = OTG_STATE_A_IDLE; - l = omap_readl(OTG_CTRL) & OTG_XCEIV_OUTPUTS; - omap_writel(l, OTG_CTRL); - isp->last_otg_ctrl = l; - pr_debug(" --> %s/%s\n", state_name(isp), tag); -} - -/* called from irq handlers */ -static void b_idle(struct isp1301 *isp, const char *tag) -{ - u32 l; - - if (isp->phy.state == OTG_STATE_B_IDLE) - return; - - isp->phy.otg->default_a = 0; - if (isp->phy.otg->host) { - isp->phy.otg->host->is_b_host = 1; - host_suspend(isp); - } - if (isp->phy.otg->gadget) { - isp->phy.otg->gadget->is_a_peripheral = 0; - gadget_suspend(isp); - } - isp->phy.state = OTG_STATE_B_IDLE; - l = omap_readl(OTG_CTRL) & OTG_XCEIV_OUTPUTS; - omap_writel(l, OTG_CTRL); - isp->last_otg_ctrl = l; - pr_debug(" --> %s/%s\n", state_name(isp), tag); -} - -static void -dump_regs(struct isp1301 *isp, const char *label) -{ -#ifdef DEBUG - u8 ctrl = isp1301_get_u8(isp, ISP1301_OTG_CONTROL_1); - u8 status = isp1301_get_u8(isp, ISP1301_OTG_STATUS); - u8 src = isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE); - - pr_debug("otg: %06x, %s %s, otg/%02x stat/%02x.%02x\n", - omap_readl(OTG_CTRL), label, state_name(isp), - ctrl, status, src); - /* mode control and irq enables don't change much */ -#endif -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_USB_OTG - -/* - * The OMAP OTG controller handles most of the OTG state transitions. - * - * We translate isp1301 outputs (mostly voltage comparator status) into - * OTG inputs; OTG outputs (mostly pullup/pulldown controls) and HNP state - * flags into isp1301 inputs ... and infer state transitions. - */ - -#ifdef VERBOSE - -static void check_state(struct isp1301 *isp, const char *tag) -{ - enum usb_otg_state state = OTG_STATE_UNDEFINED; - u8 fsm = omap_readw(OTG_TEST) & 0x0ff; - unsigned extra = 0; - - switch (fsm) { - - /* default-b */ - case 0x0: - state = OTG_STATE_B_IDLE; - break; - case 0x3: - case 0x7: - extra = 1; - case 0x1: - state = OTG_STATE_B_PERIPHERAL; - break; - case 0x11: - state = OTG_STATE_B_SRP_INIT; - break; - - /* extra dual-role default-b states */ - case 0x12: - case 0x13: - case 0x16: - extra = 1; - case 0x17: - state = OTG_STATE_B_WAIT_ACON; - break; - case 0x34: - state = OTG_STATE_B_HOST; - break; - - /* default-a */ - case 0x36: - state = OTG_STATE_A_IDLE; - break; - case 0x3c: - state = OTG_STATE_A_WAIT_VFALL; - break; - case 0x7d: - state = OTG_STATE_A_VBUS_ERR; - break; - case 0x9e: - case 0x9f: - extra = 1; - case 0x89: - state = OTG_STATE_A_PERIPHERAL; - break; - case 0xb7: - state = OTG_STATE_A_WAIT_VRISE; - break; - case 0xb8: - state = OTG_STATE_A_WAIT_BCON; - break; - case 0xb9: - state = OTG_STATE_A_HOST; - break; - case 0xba: - state = OTG_STATE_A_SUSPEND; - break; - default: - break; - } - if (isp->phy.state == state && !extra) - return; - pr_debug("otg: %s FSM %s/%02x, %s, %06x\n", tag, - otg_state_string(state), fsm, state_name(isp), - omap_readl(OTG_CTRL)); -} - -#else - -static inline void check_state(struct isp1301 *isp, const char *tag) { } - -#endif - -/* outputs from ISP1301_INTERRUPT_SOURCE */ -static void update_otg1(struct isp1301 *isp, u8 int_src) -{ - u32 otg_ctrl; - - otg_ctrl = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; - otg_ctrl &= ~OTG_XCEIV_INPUTS; - otg_ctrl &= ~(OTG_ID|OTG_ASESSVLD|OTG_VBUSVLD); - - if (int_src & INTR_SESS_VLD) - otg_ctrl |= OTG_ASESSVLD; - else if (isp->phy.state == OTG_STATE_A_WAIT_VFALL) { - a_idle(isp, "vfall"); - otg_ctrl &= ~OTG_CTRL_BITS; - } - if (int_src & INTR_VBUS_VLD) - otg_ctrl |= OTG_VBUSVLD; - if (int_src & INTR_ID_GND) { /* default-A */ - if (isp->phy.state == OTG_STATE_B_IDLE - || isp->phy.state - == OTG_STATE_UNDEFINED) { - a_idle(isp, "init"); - return; - } - } else { /* default-B */ - otg_ctrl |= OTG_ID; - if (isp->phy.state == OTG_STATE_A_IDLE - || isp->phy.state == OTG_STATE_UNDEFINED) { - b_idle(isp, "init"); - return; - } - } - omap_writel(otg_ctrl, OTG_CTRL); -} - -/* outputs from ISP1301_OTG_STATUS */ -static void update_otg2(struct isp1301 *isp, u8 otg_status) -{ - u32 otg_ctrl; - - otg_ctrl = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; - otg_ctrl &= ~OTG_XCEIV_INPUTS; - otg_ctrl &= ~(OTG_BSESSVLD | OTG_BSESSEND); - if (otg_status & OTG_B_SESS_VLD) - otg_ctrl |= OTG_BSESSVLD; - else if (otg_status & OTG_B_SESS_END) - otg_ctrl |= OTG_BSESSEND; - omap_writel(otg_ctrl, OTG_CTRL); -} - -/* inputs going to ISP1301 */ -static void otg_update_isp(struct isp1301 *isp) -{ - u32 otg_ctrl, otg_change; - u8 set = OTG1_DM_PULLDOWN, clr = OTG1_DM_PULLUP; - - otg_ctrl = omap_readl(OTG_CTRL); - otg_change = otg_ctrl ^ isp->last_otg_ctrl; - isp->last_otg_ctrl = otg_ctrl; - otg_ctrl = otg_ctrl & OTG_XCEIV_INPUTS; - - switch (isp->phy.state) { - case OTG_STATE_B_IDLE: - case OTG_STATE_B_PERIPHERAL: - case OTG_STATE_B_SRP_INIT: - if (!(otg_ctrl & OTG_PULLUP)) { - // if (otg_ctrl & OTG_B_HNPEN) { - if (isp->phy.otg->gadget->b_hnp_enable) { - isp->phy.state = OTG_STATE_B_WAIT_ACON; - pr_debug(" --> b_wait_acon\n"); - } - goto pulldown; - } -pullup: - set |= OTG1_DP_PULLUP; - clr |= OTG1_DP_PULLDOWN; - break; - case OTG_STATE_A_SUSPEND: - case OTG_STATE_A_PERIPHERAL: - if (otg_ctrl & OTG_PULLUP) - goto pullup; - /* FALLTHROUGH */ - // case OTG_STATE_B_WAIT_ACON: - default: -pulldown: - set |= OTG1_DP_PULLDOWN; - clr |= OTG1_DP_PULLUP; - break; - } - -# define toggle(OTG,ISP) do { \ - if (otg_ctrl & OTG) set |= ISP; \ - else clr |= ISP; \ - } while (0) - - if (!(isp->phy.otg->host)) - otg_ctrl &= ~OTG_DRV_VBUS; - - switch (isp->phy.state) { - case OTG_STATE_A_SUSPEND: - if (otg_ctrl & OTG_DRV_VBUS) { - set |= OTG1_VBUS_DRV; - break; - } - /* HNP failed for some reason (A_AIDL_BDIS timeout) */ - notresponding(isp); - - /* FALLTHROUGH */ - case OTG_STATE_A_VBUS_ERR: - isp->phy.state = OTG_STATE_A_WAIT_VFALL; - pr_debug(" --> a_wait_vfall\n"); - /* FALLTHROUGH */ - case OTG_STATE_A_WAIT_VFALL: - /* FIXME usbcore thinks port power is still on ... */ - clr |= OTG1_VBUS_DRV; - break; - case OTG_STATE_A_IDLE: - if (otg_ctrl & OTG_DRV_VBUS) { - isp->phy.state = OTG_STATE_A_WAIT_VRISE; - pr_debug(" --> a_wait_vrise\n"); - } - /* FALLTHROUGH */ - default: - toggle(OTG_DRV_VBUS, OTG1_VBUS_DRV); - } - - toggle(OTG_PU_VBUS, OTG1_VBUS_CHRG); - toggle(OTG_PD_VBUS, OTG1_VBUS_DISCHRG); - -# undef toggle - - isp1301_set_bits(isp, ISP1301_OTG_CONTROL_1, set); - isp1301_clear_bits(isp, ISP1301_OTG_CONTROL_1, clr); - - /* HNP switch to host or peripheral; and SRP */ - if (otg_change & OTG_PULLUP) { - u32 l; - - switch (isp->phy.state) { - case OTG_STATE_B_IDLE: - if (clr & OTG1_DP_PULLUP) - break; - isp->phy.state = OTG_STATE_B_PERIPHERAL; - pr_debug(" --> b_peripheral\n"); - break; - case OTG_STATE_A_SUSPEND: - if (clr & OTG1_DP_PULLUP) - break; - isp->phy.state = OTG_STATE_A_PERIPHERAL; - pr_debug(" --> a_peripheral\n"); - break; - default: - break; - } - l = omap_readl(OTG_CTRL); - l |= OTG_PULLUP; - omap_writel(l, OTG_CTRL); - } - - check_state(isp, __func__); - dump_regs(isp, "otg->isp1301"); -} - -static irqreturn_t omap_otg_irq(int irq, void *_isp) -{ - u16 otg_irq = omap_readw(OTG_IRQ_SRC); - u32 otg_ctrl; - int ret = IRQ_NONE; - struct isp1301 *isp = _isp; - struct usb_otg *otg = isp->phy.otg; - - /* update ISP1301 transceiver from OTG controller */ - if (otg_irq & OPRT_CHG) { - omap_writew(OPRT_CHG, OTG_IRQ_SRC); - isp1301_defer_work(isp, WORK_UPDATE_ISP); - ret = IRQ_HANDLED; - - /* SRP to become b_peripheral failed */ - } else if (otg_irq & B_SRP_TMROUT) { - pr_debug("otg: B_SRP_TIMEOUT, %06x\n", omap_readl(OTG_CTRL)); - notresponding(isp); - - /* gadget drivers that care should monitor all kinds of - * remote wakeup (SRP, normal) using their own timer - * to give "check cable and A-device" messages. - */ - if (isp->phy.state == OTG_STATE_B_SRP_INIT) - b_idle(isp, "srp_timeout"); - - omap_writew(B_SRP_TMROUT, OTG_IRQ_SRC); - ret = IRQ_HANDLED; - - /* HNP to become b_host failed */ - } else if (otg_irq & B_HNP_FAIL) { - pr_debug("otg: %s B_HNP_FAIL, %06x\n", - state_name(isp), omap_readl(OTG_CTRL)); - notresponding(isp); - - otg_ctrl = omap_readl(OTG_CTRL); - otg_ctrl |= OTG_BUSDROP; - otg_ctrl &= OTG_CTRL_MASK & ~OTG_XCEIV_INPUTS; - omap_writel(otg_ctrl, OTG_CTRL); - - /* subset of b_peripheral()... */ - isp->phy.state = OTG_STATE_B_PERIPHERAL; - pr_debug(" --> b_peripheral\n"); - - omap_writew(B_HNP_FAIL, OTG_IRQ_SRC); - ret = IRQ_HANDLED; - - /* detect SRP from B-device ... */ - } else if (otg_irq & A_SRP_DETECT) { - pr_debug("otg: %s SRP_DETECT, %06x\n", - state_name(isp), omap_readl(OTG_CTRL)); - - isp1301_defer_work(isp, WORK_UPDATE_OTG); - switch (isp->phy.state) { - case OTG_STATE_A_IDLE: - if (!otg->host) - break; - isp1301_defer_work(isp, WORK_HOST_RESUME); - otg_ctrl = omap_readl(OTG_CTRL); - otg_ctrl |= OTG_A_BUSREQ; - otg_ctrl &= ~(OTG_BUSDROP|OTG_B_BUSREQ) - & ~OTG_XCEIV_INPUTS - & OTG_CTRL_MASK; - omap_writel(otg_ctrl, OTG_CTRL); - break; - default: - break; - } - - omap_writew(A_SRP_DETECT, OTG_IRQ_SRC); - ret = IRQ_HANDLED; - - /* timer expired: T(a_wait_bcon) and maybe T(a_wait_vrise) - * we don't track them separately - */ - } else if (otg_irq & A_REQ_TMROUT) { - otg_ctrl = omap_readl(OTG_CTRL); - pr_info("otg: BCON_TMOUT from %s, %06x\n", - state_name(isp), otg_ctrl); - notresponding(isp); - - otg_ctrl |= OTG_BUSDROP; - otg_ctrl &= ~OTG_A_BUSREQ & OTG_CTRL_MASK & ~OTG_XCEIV_INPUTS; - omap_writel(otg_ctrl, OTG_CTRL); - isp->phy.state = OTG_STATE_A_WAIT_VFALL; - - omap_writew(A_REQ_TMROUT, OTG_IRQ_SRC); - ret = IRQ_HANDLED; - - /* A-supplied voltage fell too low; overcurrent */ - } else if (otg_irq & A_VBUS_ERR) { - otg_ctrl = omap_readl(OTG_CTRL); - printk(KERN_ERR "otg: %s, VBUS_ERR %04x ctrl %06x\n", - state_name(isp), otg_irq, otg_ctrl); - - otg_ctrl |= OTG_BUSDROP; - otg_ctrl &= ~OTG_A_BUSREQ & OTG_CTRL_MASK & ~OTG_XCEIV_INPUTS; - omap_writel(otg_ctrl, OTG_CTRL); - isp->phy.state = OTG_STATE_A_VBUS_ERR; - - omap_writew(A_VBUS_ERR, OTG_IRQ_SRC); - ret = IRQ_HANDLED; - - /* switch driver; the transceiver code activates it, - * ungating the udc clock or resuming OHCI. - */ - } else if (otg_irq & DRIVER_SWITCH) { - int kick = 0; - - otg_ctrl = omap_readl(OTG_CTRL); - printk(KERN_NOTICE "otg: %s, SWITCH to %s, ctrl %06x\n", - state_name(isp), - (otg_ctrl & OTG_DRIVER_SEL) - ? "gadget" : "host", - otg_ctrl); - isp1301_defer_work(isp, WORK_UPDATE_ISP); - - /* role is peripheral */ - if (otg_ctrl & OTG_DRIVER_SEL) { - switch (isp->phy.state) { - case OTG_STATE_A_IDLE: - b_idle(isp, __func__); - break; - default: - break; - } - isp1301_defer_work(isp, WORK_UPDATE_ISP); - - /* role is host */ - } else { - if (!(otg_ctrl & OTG_ID)) { - otg_ctrl &= OTG_CTRL_MASK & ~OTG_XCEIV_INPUTS; - omap_writel(otg_ctrl | OTG_A_BUSREQ, OTG_CTRL); - } - - if (otg->host) { - switch (isp->phy.state) { - case OTG_STATE_B_WAIT_ACON: - isp->phy.state = OTG_STATE_B_HOST; - pr_debug(" --> b_host\n"); - kick = 1; - break; - case OTG_STATE_A_WAIT_BCON: - isp->phy.state = OTG_STATE_A_HOST; - pr_debug(" --> a_host\n"); - break; - case OTG_STATE_A_PERIPHERAL: - isp->phy.state = OTG_STATE_A_WAIT_BCON; - pr_debug(" --> a_wait_bcon\n"); - break; - default: - break; - } - isp1301_defer_work(isp, WORK_HOST_RESUME); - } - } - - omap_writew(DRIVER_SWITCH, OTG_IRQ_SRC); - ret = IRQ_HANDLED; - - if (kick) - usb_bus_start_enum(otg->host, otg->host->otg_port); - } - - check_state(isp, __func__); - return ret; -} - -static struct platform_device *otg_dev; - -static int isp1301_otg_init(struct isp1301 *isp) -{ - u32 l; - - if (!otg_dev) - return -ENODEV; - - dump_regs(isp, __func__); - /* some of these values are board-specific... */ - l = omap_readl(OTG_SYSCON_2); - l |= OTG_EN - /* for B-device: */ - | SRP_GPDATA /* 9msec Bdev D+ pulse */ - | SRP_GPDVBUS /* discharge after VBUS pulse */ - // | (3 << 24) /* 2msec VBUS pulse */ - /* for A-device: */ - | (0 << 20) /* 200ms nominal A_WAIT_VRISE timer */ - | SRP_DPW /* detect 167+ns SRP pulses */ - | SRP_DATA | SRP_VBUS /* accept both kinds of SRP pulse */ - ; - omap_writel(l, OTG_SYSCON_2); - - update_otg1(isp, isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE)); - update_otg2(isp, isp1301_get_u8(isp, ISP1301_OTG_STATUS)); - - check_state(isp, __func__); - pr_debug("otg: %s, %s %06x\n", - state_name(isp), __func__, omap_readl(OTG_CTRL)); - - omap_writew(DRIVER_SWITCH | OPRT_CHG - | B_SRP_TMROUT | B_HNP_FAIL - | A_VBUS_ERR | A_SRP_DETECT | A_REQ_TMROUT, OTG_IRQ_EN); - - l = omap_readl(OTG_SYSCON_2); - l |= OTG_EN; - omap_writel(l, OTG_SYSCON_2); - - return 0; -} - -static int otg_probe(struct platform_device *dev) -{ - // struct omap_usb_config *config = dev->platform_data; - - otg_dev = dev; - return 0; -} - -static int otg_remove(struct platform_device *dev) -{ - otg_dev = NULL; - return 0; -} - -static struct platform_driver omap_otg_driver = { - .probe = otg_probe, - .remove = otg_remove, - .driver = { - .owner = THIS_MODULE, - .name = "omap_otg", - }, -}; - -static int otg_bind(struct isp1301 *isp) -{ - int status; - - if (otg_dev) - return -EBUSY; - - status = platform_driver_register(&omap_otg_driver); - if (status < 0) - return status; - - if (otg_dev) - status = request_irq(otg_dev->resource[1].start, omap_otg_irq, - 0, DRIVER_NAME, isp); - else - status = -ENODEV; - - if (status < 0) - platform_driver_unregister(&omap_otg_driver); - return status; -} - -static void otg_unbind(struct isp1301 *isp) -{ - if (!otg_dev) - return; - free_irq(otg_dev->resource[1].start, isp); -} - -#else - -/* OTG controller isn't clocked */ - -#endif /* CONFIG_USB_OTG */ - -/*-------------------------------------------------------------------------*/ - -static void b_peripheral(struct isp1301 *isp) -{ - u32 l; - - l = omap_readl(OTG_CTRL) & OTG_XCEIV_OUTPUTS; - omap_writel(l, OTG_CTRL); - - usb_gadget_vbus_connect(isp->phy.otg->gadget); - -#ifdef CONFIG_USB_OTG - enable_vbus_draw(isp, 8); - otg_update_isp(isp); -#else - enable_vbus_draw(isp, 100); - /* UDC driver just set OTG_BSESSVLD */ - isp1301_set_bits(isp, ISP1301_OTG_CONTROL_1, OTG1_DP_PULLUP); - isp1301_clear_bits(isp, ISP1301_OTG_CONTROL_1, OTG1_DP_PULLDOWN); - isp->phy.state = OTG_STATE_B_PERIPHERAL; - pr_debug(" --> b_peripheral\n"); - dump_regs(isp, "2periph"); -#endif -} - -static void isp_update_otg(struct isp1301 *isp, u8 stat) -{ - struct usb_otg *otg = isp->phy.otg; - u8 isp_stat, isp_bstat; - enum usb_otg_state state = isp->phy.state; - - if (stat & INTR_BDIS_ACON) - pr_debug("OTG: BDIS_ACON, %s\n", state_name(isp)); - - /* start certain state transitions right away */ - isp_stat = isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE); - if (isp_stat & INTR_ID_GND) { - if (otg->default_a) { - switch (state) { - case OTG_STATE_B_IDLE: - a_idle(isp, "idle"); - /* FALLTHROUGH */ - case OTG_STATE_A_IDLE: - enable_vbus_source(isp); - /* FALLTHROUGH */ - case OTG_STATE_A_WAIT_VRISE: - /* we skip over OTG_STATE_A_WAIT_BCON, since - * the HC will transition to A_HOST (or - * A_SUSPEND!) without our noticing except - * when HNP is used. - */ - if (isp_stat & INTR_VBUS_VLD) - isp->phy.state = OTG_STATE_A_HOST; - break; - case OTG_STATE_A_WAIT_VFALL: - if (!(isp_stat & INTR_SESS_VLD)) - a_idle(isp, "vfell"); - break; - default: - if (!(isp_stat & INTR_VBUS_VLD)) - isp->phy.state = OTG_STATE_A_VBUS_ERR; - break; - } - isp_bstat = isp1301_get_u8(isp, ISP1301_OTG_STATUS); - } else { - switch (state) { - case OTG_STATE_B_PERIPHERAL: - case OTG_STATE_B_HOST: - case OTG_STATE_B_WAIT_ACON: - usb_gadget_vbus_disconnect(otg->gadget); - break; - default: - break; - } - if (state != OTG_STATE_A_IDLE) - a_idle(isp, "id"); - if (otg->host && state == OTG_STATE_A_IDLE) - isp1301_defer_work(isp, WORK_HOST_RESUME); - isp_bstat = 0; - } - } else { - u32 l; - - /* if user unplugged mini-A end of cable, - * don't bypass A_WAIT_VFALL. - */ - if (otg->default_a) { - switch (state) { - default: - isp->phy.state = OTG_STATE_A_WAIT_VFALL; - break; - case OTG_STATE_A_WAIT_VFALL: - state = OTG_STATE_A_IDLE; - /* khubd may take a while to notice and - * handle this disconnect, so don't go - * to B_IDLE quite yet. - */ - break; - case OTG_STATE_A_IDLE: - host_suspend(isp); - isp1301_clear_bits(isp, ISP1301_MODE_CONTROL_1, - MC1_BDIS_ACON_EN); - isp->phy.state = OTG_STATE_B_IDLE; - l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; - l &= ~OTG_CTRL_BITS; - omap_writel(l, OTG_CTRL); - break; - case OTG_STATE_B_IDLE: - break; - } - } - isp_bstat = isp1301_get_u8(isp, ISP1301_OTG_STATUS); - - switch (isp->phy.state) { - case OTG_STATE_B_PERIPHERAL: - case OTG_STATE_B_WAIT_ACON: - case OTG_STATE_B_HOST: - if (likely(isp_bstat & OTG_B_SESS_VLD)) - break; - enable_vbus_draw(isp, 0); -#ifndef CONFIG_USB_OTG - /* UDC driver will clear OTG_BSESSVLD */ - isp1301_set_bits(isp, ISP1301_OTG_CONTROL_1, - OTG1_DP_PULLDOWN); - isp1301_clear_bits(isp, ISP1301_OTG_CONTROL_1, - OTG1_DP_PULLUP); - dump_regs(isp, __func__); -#endif - /* FALLTHROUGH */ - case OTG_STATE_B_SRP_INIT: - b_idle(isp, __func__); - l = omap_readl(OTG_CTRL) & OTG_XCEIV_OUTPUTS; - omap_writel(l, OTG_CTRL); - /* FALLTHROUGH */ - case OTG_STATE_B_IDLE: - if (otg->gadget && (isp_bstat & OTG_B_SESS_VLD)) { -#ifdef CONFIG_USB_OTG - update_otg1(isp, isp_stat); - update_otg2(isp, isp_bstat); -#endif - b_peripheral(isp); - } else if (!(isp_stat & (INTR_VBUS_VLD|INTR_SESS_VLD))) - isp_bstat |= OTG_B_SESS_END; - break; - case OTG_STATE_A_WAIT_VFALL: - break; - default: - pr_debug("otg: unsupported b-device %s\n", - state_name(isp)); - break; - } - } - - if (state != isp->phy.state) - pr_debug(" isp, %s -> %s\n", - otg_state_string(state), state_name(isp)); - -#ifdef CONFIG_USB_OTG - /* update the OTG controller state to match the isp1301; may - * trigger OPRT_CHG irqs for changes going to the isp1301. - */ - update_otg1(isp, isp_stat); - update_otg2(isp, isp_bstat); - check_state(isp, __func__); -#endif - - dump_regs(isp, "isp1301->otg"); -} - -/*-------------------------------------------------------------------------*/ - -static u8 isp1301_clear_latch(struct isp1301 *isp) -{ - u8 latch = isp1301_get_u8(isp, ISP1301_INTERRUPT_LATCH); - isp1301_clear_bits(isp, ISP1301_INTERRUPT_LATCH, latch); - return latch; -} - -static void -isp1301_work(struct work_struct *work) -{ - struct isp1301 *isp = container_of(work, struct isp1301, work); - int stop; - - /* implicit lock: we're the only task using this device */ - isp->working = 1; - do { - stop = test_bit(WORK_STOP, &isp->todo); - -#ifdef CONFIG_USB_OTG - /* transfer state from otg engine to isp1301 */ - if (test_and_clear_bit(WORK_UPDATE_ISP, &isp->todo)) { - otg_update_isp(isp); - put_device(&isp->client->dev); - } -#endif - /* transfer state from isp1301 to otg engine */ - if (test_and_clear_bit(WORK_UPDATE_OTG, &isp->todo)) { - u8 stat = isp1301_clear_latch(isp); - - isp_update_otg(isp, stat); - put_device(&isp->client->dev); - } - - if (test_and_clear_bit(WORK_HOST_RESUME, &isp->todo)) { - u32 otg_ctrl; - - /* - * skip A_WAIT_VRISE; hc transitions invisibly - * skip A_WAIT_BCON; same. - */ - switch (isp->phy.state) { - case OTG_STATE_A_WAIT_BCON: - case OTG_STATE_A_WAIT_VRISE: - isp->phy.state = OTG_STATE_A_HOST; - pr_debug(" --> a_host\n"); - otg_ctrl = omap_readl(OTG_CTRL); - otg_ctrl |= OTG_A_BUSREQ; - otg_ctrl &= ~(OTG_BUSDROP|OTG_B_BUSREQ) - & OTG_CTRL_MASK; - omap_writel(otg_ctrl, OTG_CTRL); - break; - case OTG_STATE_B_WAIT_ACON: - isp->phy.state = OTG_STATE_B_HOST; - pr_debug(" --> b_host (acon)\n"); - break; - case OTG_STATE_B_HOST: - case OTG_STATE_B_IDLE: - case OTG_STATE_A_IDLE: - break; - default: - pr_debug(" host resume in %s\n", - state_name(isp)); - } - host_resume(isp); - // mdelay(10); - put_device(&isp->client->dev); - } - - if (test_and_clear_bit(WORK_TIMER, &isp->todo)) { -#ifdef VERBOSE - dump_regs(isp, "timer"); - if (!stop) - mod_timer(&isp->timer, jiffies + TIMER_JIFFIES); -#endif - put_device(&isp->client->dev); - } - - if (isp->todo) - dev_vdbg(&isp->client->dev, - "work done, todo = 0x%lx\n", - isp->todo); - if (stop) { - dev_dbg(&isp->client->dev, "stop\n"); - break; - } - } while (isp->todo); - isp->working = 0; -} - -static irqreturn_t isp1301_irq(int irq, void *isp) -{ - isp1301_defer_work(isp, WORK_UPDATE_OTG); - return IRQ_HANDLED; -} - -static void isp1301_timer(unsigned long _isp) -{ - isp1301_defer_work((void *)_isp, WORK_TIMER); -} - -/*-------------------------------------------------------------------------*/ - -static void isp1301_release(struct device *dev) -{ - struct isp1301 *isp; - - isp = dev_get_drvdata(dev); - - /* FIXME -- not with a "new style" driver, it doesn't!! */ - - /* ugly -- i2c hijacks our memory hook to wait_for_completion() */ - if (isp->i2c_release) - isp->i2c_release(dev); - kfree(isp->phy.otg); - kfree (isp); -} - -static struct isp1301 *the_transceiver; - -static int __exit isp1301_remove(struct i2c_client *i2c) -{ - struct isp1301 *isp; - - isp = i2c_get_clientdata(i2c); - - isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0); - isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0); - free_irq(i2c->irq, isp); -#ifdef CONFIG_USB_OTG - otg_unbind(isp); -#endif - if (machine_is_omap_h2()) - gpio_free(2); - - isp->timer.data = 0; - set_bit(WORK_STOP, &isp->todo); - del_timer_sync(&isp->timer); - flush_work(&isp->work); - - put_device(&i2c->dev); - the_transceiver = NULL; - - return 0; -} - -/*-------------------------------------------------------------------------*/ - -/* NOTE: three modes are possible here, only one of which - * will be standards-conformant on any given system: - * - * - OTG mode (dual-role), required if there's a Mini-AB connector - * - HOST mode, for when there's one or more A (host) connectors - * - DEVICE mode, for when there's a B/Mini-B (device) connector - * - * As a rule, you won't have an isp1301 chip unless it's there to - * support the OTG mode. Other modes help testing USB controllers - * in isolation from (full) OTG support, or maybe so later board - * revisions can help to support those feature. - */ - -#ifdef CONFIG_USB_OTG - -static int isp1301_otg_enable(struct isp1301 *isp) -{ - power_up(isp); - isp1301_otg_init(isp); - - /* NOTE: since we don't change this, this provides - * a few more interrupts than are strictly needed. - */ - isp1301_set_bits(isp, ISP1301_INTERRUPT_RISING, - INTR_VBUS_VLD | INTR_SESS_VLD | INTR_ID_GND); - isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING, - INTR_VBUS_VLD | INTR_SESS_VLD | INTR_ID_GND); - - dev_info(&isp->client->dev, "ready for dual-role USB ...\n"); - - return 0; -} - -#endif - -/* add or disable the host device+driver */ -static int -isp1301_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); - - if (!otg || isp != the_transceiver) - return -ENODEV; - - if (!host) { - omap_writew(0, OTG_IRQ_EN); - power_down(isp); - otg->host = NULL; - return 0; - } - -#ifdef CONFIG_USB_OTG - otg->host = host; - dev_dbg(&isp->client->dev, "registered host\n"); - host_suspend(isp); - if (otg->gadget) - return isp1301_otg_enable(isp); - return 0; - -#elif !defined(CONFIG_USB_GADGET_OMAP) - // FIXME update its refcount - otg->host = host; - - power_up(isp); - - if (machine_is_omap_h2()) - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_DAT_SE0); - - dev_info(&isp->client->dev, "A-Host sessions ok\n"); - isp1301_set_bits(isp, ISP1301_INTERRUPT_RISING, - INTR_ID_GND); - isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING, - INTR_ID_GND); - - /* If this has a Mini-AB connector, this mode is highly - * nonstandard ... but can be handy for testing, especially with - * the Mini-A end of an OTG cable. (Or something nonstandard - * like MiniB-to-StandardB, maybe built with a gender mender.) - */ - isp1301_set_bits(isp, ISP1301_OTG_CONTROL_1, OTG1_VBUS_DRV); - - dump_regs(isp, __func__); - - return 0; - -#else - dev_dbg(&isp->client->dev, "host sessions not allowed\n"); - return -EINVAL; -#endif - -} - -static int -isp1301_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) -{ - struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); - - if (!otg || isp != the_transceiver) - return -ENODEV; - - if (!gadget) { - omap_writew(0, OTG_IRQ_EN); - if (!otg->default_a) - enable_vbus_draw(isp, 0); - usb_gadget_vbus_disconnect(otg->gadget); - otg->gadget = NULL; - power_down(isp); - return 0; - } - -#ifdef CONFIG_USB_OTG - otg->gadget = gadget; - dev_dbg(&isp->client->dev, "registered gadget\n"); - /* gadget driver may be suspended until vbus_connect () */ - if (otg->host) - return isp1301_otg_enable(isp); - return 0; - -#elif !defined(CONFIG_USB_OHCI_HCD) && !defined(CONFIG_USB_OHCI_HCD_MODULE) - otg->gadget = gadget; - // FIXME update its refcount - - { - u32 l; - - l = omap_readl(OTG_CTRL) & OTG_CTRL_MASK; - l &= ~(OTG_XCEIV_OUTPUTS|OTG_CTRL_BITS); - l |= OTG_ID; - omap_writel(l, OTG_CTRL); - } - - power_up(isp); - isp->phy.state = OTG_STATE_B_IDLE; - - if (machine_is_omap_h2() || machine_is_omap_h3()) - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, MC1_DAT_SE0); - - isp1301_set_bits(isp, ISP1301_INTERRUPT_RISING, - INTR_SESS_VLD); - isp1301_set_bits(isp, ISP1301_INTERRUPT_FALLING, - INTR_VBUS_VLD); - dev_info(&isp->client->dev, "B-Peripheral sessions ok\n"); - dump_regs(isp, __func__); - - /* If this has a Mini-AB connector, this mode is highly - * nonstandard ... but can be handy for testing, so long - * as you don't plug a Mini-A cable into the jack. - */ - if (isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE) & INTR_VBUS_VLD) - b_peripheral(isp); - - return 0; - -#else - dev_dbg(&isp->client->dev, "peripheral sessions not allowed\n"); - return -EINVAL; -#endif -} - - -/*-------------------------------------------------------------------------*/ - -static int -isp1301_set_power(struct usb_phy *dev, unsigned mA) -{ - if (!the_transceiver) - return -ENODEV; - if (dev->state == OTG_STATE_B_PERIPHERAL) - enable_vbus_draw(the_transceiver, mA); - return 0; -} - -static int -isp1301_start_srp(struct usb_otg *otg) -{ - struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); - u32 otg_ctrl; - - if (!otg || isp != the_transceiver - || isp->phy.state != OTG_STATE_B_IDLE) - return -ENODEV; - - otg_ctrl = omap_readl(OTG_CTRL); - if (!(otg_ctrl & OTG_BSESSEND)) - return -EINVAL; - - otg_ctrl |= OTG_B_BUSREQ; - otg_ctrl &= ~OTG_A_BUSREQ & OTG_CTRL_MASK; - omap_writel(otg_ctrl, OTG_CTRL); - isp->phy.state = OTG_STATE_B_SRP_INIT; - - pr_debug("otg: SRP, %s ... %06x\n", state_name(isp), - omap_readl(OTG_CTRL)); -#ifdef CONFIG_USB_OTG - check_state(isp, __func__); -#endif - return 0; -} - -static int -isp1301_start_hnp(struct usb_otg *otg) -{ -#ifdef CONFIG_USB_OTG - struct isp1301 *isp = container_of(otg->phy, struct isp1301, phy); - u32 l; - - if (!otg || isp != the_transceiver) - return -ENODEV; - if (otg->default_a && (otg->host == NULL || !otg->host->b_hnp_enable)) - return -ENOTCONN; - if (!otg->default_a && (otg->gadget == NULL - || !otg->gadget->b_hnp_enable)) - return -ENOTCONN; - - /* We want hardware to manage most HNP protocol timings. - * So do this part as early as possible... - */ - switch (isp->phy.state) { - case OTG_STATE_B_HOST: - isp->phy.state = OTG_STATE_B_PERIPHERAL; - /* caller will suspend next */ - break; - case OTG_STATE_A_HOST: -#if 0 - /* autoconnect mode avoids irq latency bugs */ - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, - MC1_BDIS_ACON_EN); -#endif - /* caller must suspend then clear A_BUSREQ */ - usb_gadget_vbus_connect(otg->gadget); - l = omap_readl(OTG_CTRL); - l |= OTG_A_SETB_HNPEN; - omap_writel(l, OTG_CTRL); - - break; - case OTG_STATE_A_PERIPHERAL: - /* initiated by B-Host suspend */ - break; - default: - return -EILSEQ; - } - pr_debug("otg: HNP %s, %06x ...\n", - state_name(isp), omap_readl(OTG_CTRL)); - check_state(isp, __func__); - return 0; -#else - /* srp-only */ - return -EINVAL; -#endif -} - -/*-------------------------------------------------------------------------*/ - -static int -isp1301_probe(struct i2c_client *i2c, const struct i2c_device_id *id) -{ - int status; - struct isp1301 *isp; - - if (the_transceiver) - return 0; - - isp = kzalloc(sizeof *isp, GFP_KERNEL); - if (!isp) - return 0; - - isp->phy.otg = kzalloc(sizeof *isp->phy.otg, GFP_KERNEL); - if (!isp->phy.otg) { - kfree(isp); - return 0; - } - - INIT_WORK(&isp->work, isp1301_work); - init_timer(&isp->timer); - isp->timer.function = isp1301_timer; - isp->timer.data = (unsigned long) isp; - - i2c_set_clientdata(i2c, isp); - isp->client = i2c; - - /* verify the chip (shouldn't be necessary) */ - status = isp1301_get_u16(isp, ISP1301_VENDOR_ID); - if (status != I2C_VENDOR_ID_PHILIPS) { - dev_dbg(&i2c->dev, "not philips id: %d\n", status); - goto fail; - } - status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID); - if (status != I2C_PRODUCT_ID_PHILIPS_1301) { - dev_dbg(&i2c->dev, "not isp1301, %d\n", status); - goto fail; - } - isp->i2c_release = i2c->dev.release; - i2c->dev.release = isp1301_release; - - /* initial development used chiprev 2.00 */ - status = i2c_smbus_read_word_data(i2c, ISP1301_BCD_DEVICE); - dev_info(&i2c->dev, "chiprev %x.%02x, driver " DRIVER_VERSION "\n", - status >> 8, status & 0xff); - - /* make like power-on reset */ - isp1301_clear_bits(isp, ISP1301_MODE_CONTROL_1, MC1_MASK); - - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_2, MC2_BI_DI); - isp1301_clear_bits(isp, ISP1301_MODE_CONTROL_2, ~MC2_BI_DI); - - isp1301_set_bits(isp, ISP1301_OTG_CONTROL_1, - OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN); - isp1301_clear_bits(isp, ISP1301_OTG_CONTROL_1, - ~(OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN)); - - isp1301_clear_bits(isp, ISP1301_INTERRUPT_LATCH, ~0); - isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0); - isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0); - -#ifdef CONFIG_USB_OTG - status = otg_bind(isp); - if (status < 0) { - dev_dbg(&i2c->dev, "can't bind OTG\n"); - goto fail; - } -#endif - - if (machine_is_omap_h2()) { - /* full speed signaling by default */ - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_1, - MC1_SPEED); - isp1301_set_bits(isp, ISP1301_MODE_CONTROL_2, - MC2_SPD_SUSP_CTRL); - - /* IRQ wired at M14 */ - omap_cfg_reg(M14_1510_GPIO2); - if (gpio_request(2, "isp1301") == 0) - gpio_direction_input(2); - isp->irq_type = IRQF_TRIGGER_FALLING; - } - - status = request_irq(i2c->irq, isp1301_irq, - isp->irq_type, DRIVER_NAME, isp); - if (status < 0) { - dev_dbg(&i2c->dev, "can't get IRQ %d, err %d\n", - i2c->irq, status); - goto fail; - } - - isp->phy.dev = &i2c->dev; - isp->phy.label = DRIVER_NAME; - isp->phy.set_power = isp1301_set_power, - - isp->phy.otg->phy = &isp->phy; - isp->phy.otg->set_host = isp1301_set_host, - isp->phy.otg->set_peripheral = isp1301_set_peripheral, - isp->phy.otg->start_srp = isp1301_start_srp, - isp->phy.otg->start_hnp = isp1301_start_hnp, - - enable_vbus_draw(isp, 0); - power_down(isp); - the_transceiver = isp; - -#ifdef CONFIG_USB_OTG - update_otg1(isp, isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE)); - update_otg2(isp, isp1301_get_u8(isp, ISP1301_OTG_STATUS)); -#endif - - dump_regs(isp, __func__); - -#ifdef VERBOSE - mod_timer(&isp->timer, jiffies + TIMER_JIFFIES); - dev_dbg(&i2c->dev, "scheduled timer, %d min\n", TIMER_MINUTES); -#endif - - status = usb_add_phy(&isp->phy, USB_PHY_TYPE_USB2); - if (status < 0) - dev_err(&i2c->dev, "can't register transceiver, %d\n", - status); - - return 0; - -fail: - kfree(isp->phy.otg); - kfree(isp); - return -ENODEV; -} - -static const struct i2c_device_id isp1301_id[] = { - { "isp1301_omap", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, isp1301_id); - -static struct i2c_driver isp1301_driver = { - .driver = { - .name = "isp1301_omap", - }, - .probe = isp1301_probe, - .remove = __exit_p(isp1301_remove), - .id_table = isp1301_id, -}; - -/*-------------------------------------------------------------------------*/ - -static int __init isp_init(void) -{ - return i2c_add_driver(&isp1301_driver); -} -subsys_initcall(isp_init); - -static void __exit isp_exit(void) -{ - if (the_transceiver) - usb_remove_phy(&the_transceiver->phy); - i2c_del_driver(&isp1301_driver); -} -module_exit(isp_exit); - diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c deleted file mode 100644 index 749fbf41fb6..00000000000 --- a/drivers/usb/otg/msm_otg.c +++ /dev/null @@ -1,1762 +0,0 @@ -/* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - */ - -#include <linux/module.h> -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/err.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/ioport.h> -#include <linux/uaccess.h> -#include <linux/debugfs.h> -#include <linux/seq_file.h> -#include <linux/pm_runtime.h> - -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/usb/ulpi.h> -#include <linux/usb/gadget.h> -#include <linux/usb/hcd.h> -#include <linux/usb/msm_hsusb.h> -#include <linux/usb/msm_hsusb_hw.h> -#include <linux/regulator/consumer.h> - -#include <mach/clk.h> - -#define MSM_USB_BASE (motg->regs) -#define DRIVER_NAME "msm_otg" - -#define ULPI_IO_TIMEOUT_USEC (10 * 1000) - -#define USB_PHY_3P3_VOL_MIN 3050000 /* uV */ -#define USB_PHY_3P3_VOL_MAX 3300000 /* uV */ -#define USB_PHY_3P3_HPM_LOAD 50000 /* uA */ -#define USB_PHY_3P3_LPM_LOAD 4000 /* uA */ - -#define USB_PHY_1P8_VOL_MIN 1800000 /* uV */ -#define USB_PHY_1P8_VOL_MAX 1800000 /* uV */ -#define USB_PHY_1P8_HPM_LOAD 50000 /* uA */ -#define USB_PHY_1P8_LPM_LOAD 4000 /* uA */ - -#define USB_PHY_VDD_DIG_VOL_MIN 1000000 /* uV */ -#define USB_PHY_VDD_DIG_VOL_MAX 1320000 /* uV */ - -static struct regulator *hsusb_3p3; -static struct regulator *hsusb_1p8; -static struct regulator *hsusb_vddcx; - -static int msm_hsusb_init_vddcx(struct msm_otg *motg, int init) -{ - int ret = 0; - - if (init) { - hsusb_vddcx = regulator_get(motg->phy.dev, "HSUSB_VDDCX"); - if (IS_ERR(hsusb_vddcx)) { - dev_err(motg->phy.dev, "unable to get hsusb vddcx\n"); - return PTR_ERR(hsusb_vddcx); - } - - ret = regulator_set_voltage(hsusb_vddcx, - USB_PHY_VDD_DIG_VOL_MIN, - USB_PHY_VDD_DIG_VOL_MAX); - if (ret) { - dev_err(motg->phy.dev, "unable to set the voltage " - "for hsusb vddcx\n"); - regulator_put(hsusb_vddcx); - return ret; - } - - ret = regulator_enable(hsusb_vddcx); - if (ret) { - dev_err(motg->phy.dev, "unable to enable hsusb vddcx\n"); - regulator_put(hsusb_vddcx); - } - } else { - ret = regulator_set_voltage(hsusb_vddcx, 0, - USB_PHY_VDD_DIG_VOL_MAX); - if (ret) - dev_err(motg->phy.dev, "unable to set the voltage " - "for hsusb vddcx\n"); - ret = regulator_disable(hsusb_vddcx); - if (ret) - dev_err(motg->phy.dev, "unable to disable hsusb vddcx\n"); - - regulator_put(hsusb_vddcx); - } - - return ret; -} - -static int msm_hsusb_ldo_init(struct msm_otg *motg, int init) -{ - int rc = 0; - - if (init) { - hsusb_3p3 = regulator_get(motg->phy.dev, "HSUSB_3p3"); - if (IS_ERR(hsusb_3p3)) { - dev_err(motg->phy.dev, "unable to get hsusb 3p3\n"); - return PTR_ERR(hsusb_3p3); - } - - rc = regulator_set_voltage(hsusb_3p3, USB_PHY_3P3_VOL_MIN, - USB_PHY_3P3_VOL_MAX); - if (rc) { - dev_err(motg->phy.dev, "unable to set voltage level " - "for hsusb 3p3\n"); - goto put_3p3; - } - rc = regulator_enable(hsusb_3p3); - if (rc) { - dev_err(motg->phy.dev, "unable to enable the hsusb 3p3\n"); - goto put_3p3; - } - hsusb_1p8 = regulator_get(motg->phy.dev, "HSUSB_1p8"); - if (IS_ERR(hsusb_1p8)) { - dev_err(motg->phy.dev, "unable to get hsusb 1p8\n"); - rc = PTR_ERR(hsusb_1p8); - goto disable_3p3; - } - rc = regulator_set_voltage(hsusb_1p8, USB_PHY_1P8_VOL_MIN, - USB_PHY_1P8_VOL_MAX); - if (rc) { - dev_err(motg->phy.dev, "unable to set voltage level " - "for hsusb 1p8\n"); - goto put_1p8; - } - rc = regulator_enable(hsusb_1p8); - if (rc) { - dev_err(motg->phy.dev, "unable to enable the hsusb 1p8\n"); - goto put_1p8; - } - - return 0; - } - - regulator_disable(hsusb_1p8); -put_1p8: - regulator_put(hsusb_1p8); -disable_3p3: - regulator_disable(hsusb_3p3); -put_3p3: - regulator_put(hsusb_3p3); - return rc; -} - -#ifdef CONFIG_PM_SLEEP -#define USB_PHY_SUSP_DIG_VOL 500000 -static int msm_hsusb_config_vddcx(int high) -{ - int max_vol = USB_PHY_VDD_DIG_VOL_MAX; - int min_vol; - int ret; - - if (high) - min_vol = USB_PHY_VDD_DIG_VOL_MIN; - else - min_vol = USB_PHY_SUSP_DIG_VOL; - - ret = regulator_set_voltage(hsusb_vddcx, min_vol, max_vol); - if (ret) { - pr_err("%s: unable to set the voltage for regulator " - "HSUSB_VDDCX\n", __func__); - return ret; - } - - pr_debug("%s: min_vol:%d max_vol:%d\n", __func__, min_vol, max_vol); - - return ret; -} -#endif - -static int msm_hsusb_ldo_set_mode(int on) -{ - int ret = 0; - - if (!hsusb_1p8 || IS_ERR(hsusb_1p8)) { - pr_err("%s: HSUSB_1p8 is not initialized\n", __func__); - return -ENODEV; - } - - if (!hsusb_3p3 || IS_ERR(hsusb_3p3)) { - pr_err("%s: HSUSB_3p3 is not initialized\n", __func__); - return -ENODEV; - } - - if (on) { - ret = regulator_set_optimum_mode(hsusb_1p8, - USB_PHY_1P8_HPM_LOAD); - if (ret < 0) { - pr_err("%s: Unable to set HPM of the regulator " - "HSUSB_1p8\n", __func__); - return ret; - } - ret = regulator_set_optimum_mode(hsusb_3p3, - USB_PHY_3P3_HPM_LOAD); - if (ret < 0) { - pr_err("%s: Unable to set HPM of the regulator " - "HSUSB_3p3\n", __func__); - regulator_set_optimum_mode(hsusb_1p8, - USB_PHY_1P8_LPM_LOAD); - return ret; - } - } else { - ret = regulator_set_optimum_mode(hsusb_1p8, - USB_PHY_1P8_LPM_LOAD); - if (ret < 0) - pr_err("%s: Unable to set LPM of the regulator " - "HSUSB_1p8\n", __func__); - ret = regulator_set_optimum_mode(hsusb_3p3, - USB_PHY_3P3_LPM_LOAD); - if (ret < 0) - pr_err("%s: Unable to set LPM of the regulator " - "HSUSB_3p3\n", __func__); - } - - pr_debug("reg (%s)\n", on ? "HPM" : "LPM"); - return ret < 0 ? ret : 0; -} - -static int ulpi_read(struct usb_phy *phy, u32 reg) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - /* initiate read operation */ - writel(ULPI_RUN | ULPI_READ | ULPI_ADDR(reg), - USB_ULPI_VIEWPORT); - - /* wait for completion */ - while (cnt < ULPI_IO_TIMEOUT_USEC) { - if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) - break; - udelay(1); - cnt++; - } - - if (cnt >= ULPI_IO_TIMEOUT_USEC) { - dev_err(phy->dev, "ulpi_read: timeout %08x\n", - readl(USB_ULPI_VIEWPORT)); - return -ETIMEDOUT; - } - return ULPI_DATA_READ(readl(USB_ULPI_VIEWPORT)); -} - -static int ulpi_write(struct usb_phy *phy, u32 val, u32 reg) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - int cnt = 0; - - /* initiate write operation */ - writel(ULPI_RUN | ULPI_WRITE | - ULPI_ADDR(reg) | ULPI_DATA(val), - USB_ULPI_VIEWPORT); - - /* wait for completion */ - while (cnt < ULPI_IO_TIMEOUT_USEC) { - if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) - break; - udelay(1); - cnt++; - } - - if (cnt >= ULPI_IO_TIMEOUT_USEC) { - dev_err(phy->dev, "ulpi_write: timeout\n"); - return -ETIMEDOUT; - } - return 0; -} - -static struct usb_phy_io_ops msm_otg_io_ops = { - .read = ulpi_read, - .write = ulpi_write, -}; - -static void ulpi_init(struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata = motg->pdata; - int *seq = pdata->phy_init_seq; - - if (!seq) - return; - - while (seq[0] >= 0) { - dev_vdbg(motg->phy.dev, "ulpi: write 0x%02x to 0x%02x\n", - seq[0], seq[1]); - ulpi_write(&motg->phy, seq[0], seq[1]); - seq += 2; - } -} - -static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert) -{ - int ret; - - if (assert) { - ret = clk_reset(motg->clk, CLK_RESET_ASSERT); - if (ret) - dev_err(motg->phy.dev, "usb hs_clk assert failed\n"); - } else { - ret = clk_reset(motg->clk, CLK_RESET_DEASSERT); - if (ret) - dev_err(motg->phy.dev, "usb hs_clk deassert failed\n"); - } - return ret; -} - -static int msm_otg_phy_clk_reset(struct msm_otg *motg) -{ - int ret; - - ret = clk_reset(motg->phy_reset_clk, CLK_RESET_ASSERT); - if (ret) { - dev_err(motg->phy.dev, "usb phy clk assert failed\n"); - return ret; - } - usleep_range(10000, 12000); - ret = clk_reset(motg->phy_reset_clk, CLK_RESET_DEASSERT); - if (ret) - dev_err(motg->phy.dev, "usb phy clk deassert failed\n"); - return ret; -} - -static int msm_otg_phy_reset(struct msm_otg *motg) -{ - u32 val; - int ret; - int retries; - - ret = msm_otg_link_clk_reset(motg, 1); - if (ret) - return ret; - ret = msm_otg_phy_clk_reset(motg); - if (ret) - return ret; - ret = msm_otg_link_clk_reset(motg, 0); - if (ret) - return ret; - - val = readl(USB_PORTSC) & ~PORTSC_PTS_MASK; - writel(val | PORTSC_PTS_ULPI, USB_PORTSC); - - for (retries = 3; retries > 0; retries--) { - ret = ulpi_write(&motg->phy, ULPI_FUNC_CTRL_SUSPENDM, - ULPI_CLR(ULPI_FUNC_CTRL)); - if (!ret) - break; - ret = msm_otg_phy_clk_reset(motg); - if (ret) - return ret; - } - if (!retries) - return -ETIMEDOUT; - - /* This reset calibrates the phy, if the above write succeeded */ - ret = msm_otg_phy_clk_reset(motg); - if (ret) - return ret; - - for (retries = 3; retries > 0; retries--) { - ret = ulpi_read(&motg->phy, ULPI_DEBUG); - if (ret != -ETIMEDOUT) - break; - ret = msm_otg_phy_clk_reset(motg); - if (ret) - return ret; - } - if (!retries) - return -ETIMEDOUT; - - dev_info(motg->phy.dev, "phy_reset: success\n"); - return 0; -} - -#define LINK_RESET_TIMEOUT_USEC (250 * 1000) -static int msm_otg_reset(struct usb_phy *phy) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - int cnt = 0; - int ret; - u32 val = 0; - u32 ulpi_val = 0; - - ret = msm_otg_phy_reset(motg); - if (ret) { - dev_err(phy->dev, "phy_reset failed\n"); - return ret; - } - - ulpi_init(motg); - - writel(USBCMD_RESET, USB_USBCMD); - while (cnt < LINK_RESET_TIMEOUT_USEC) { - if (!(readl(USB_USBCMD) & USBCMD_RESET)) - break; - udelay(1); - cnt++; - } - if (cnt >= LINK_RESET_TIMEOUT_USEC) - return -ETIMEDOUT; - - /* select ULPI phy */ - writel(0x80000000, USB_PORTSC); - - msleep(100); - - writel(0x0, USB_AHBBURST); - writel(0x00, USB_AHBMODE); - - if (pdata->otg_control == OTG_PHY_CONTROL) { - val = readl(USB_OTGSC); - if (pdata->mode == USB_OTG) { - ulpi_val = ULPI_INT_IDGRD | ULPI_INT_SESS_VALID; - val |= OTGSC_IDIE | OTGSC_BSVIE; - } else if (pdata->mode == USB_PERIPHERAL) { - ulpi_val = ULPI_INT_SESS_VALID; - val |= OTGSC_BSVIE; - } - writel(val, USB_OTGSC); - ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_RISE); - ulpi_write(phy, ulpi_val, ULPI_USB_INT_EN_FALL); - } - - return 0; -} - -#define PHY_SUSPEND_TIMEOUT_USEC (500 * 1000) -#define PHY_RESUME_TIMEOUT_USEC (100 * 1000) - -#ifdef CONFIG_PM_SLEEP -static int msm_otg_suspend(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - struct usb_bus *bus = phy->otg->host; - struct msm_otg_platform_data *pdata = motg->pdata; - int cnt = 0; - - if (atomic_read(&motg->in_lpm)) - return 0; - - disable_irq(motg->irq); - /* - * Chipidea 45-nm PHY suspend sequence: - * - * Interrupt Latch Register auto-clear feature is not present - * in all PHY versions. Latch register is clear on read type. - * Clear latch register to avoid spurious wakeup from - * low power mode (LPM). - * - * PHY comparators are disabled when PHY enters into low power - * mode (LPM). Keep PHY comparators ON in LPM only when we expect - * VBUS/Id notifications from USB PHY. Otherwise turn off USB - * PHY comparators. This save significant amount of power. - * - * PLL is not turned off when PHY enters into low power mode (LPM). - * Disable PLL for maximum power savings. - */ - - if (motg->pdata->phy_type == CI_45NM_INTEGRATED_PHY) { - ulpi_read(phy, 0x14); - if (pdata->otg_control == OTG_PHY_CONTROL) - ulpi_write(phy, 0x01, 0x30); - ulpi_write(phy, 0x08, 0x09); - } - - /* - * PHY may take some time or even fail to enter into low power - * mode (LPM). Hence poll for 500 msec and reset the PHY and link - * in failure case. - */ - writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { - if (readl(USB_PORTSC) & PORTSC_PHCD) - break; - udelay(1); - cnt++; - } - - if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) { - dev_err(phy->dev, "Unable to suspend PHY\n"); - msm_otg_reset(phy); - enable_irq(motg->irq); - return -ETIMEDOUT; - } - - /* - * PHY has capability to generate interrupt asynchronously in low - * power mode (LPM). This interrupt is level triggered. So USB IRQ - * line must be disabled till async interrupt enable bit is cleared - * in USBCMD register. Assert STP (ULPI interface STOP signal) to - * block data communication from PHY. - */ - writel(readl(USB_USBCMD) | ASYNC_INTR_CTRL | ULPI_STP_CTRL, USB_USBCMD); - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) - writel(readl(USB_PHY_CTRL) | PHY_RETEN, USB_PHY_CTRL); - - clk_disable(motg->pclk); - clk_disable(motg->clk); - if (motg->core_clk) - clk_disable(motg->core_clk); - - if (!IS_ERR(motg->pclk_src)) - clk_disable(motg->pclk_src); - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) { - msm_hsusb_ldo_set_mode(0); - msm_hsusb_config_vddcx(0); - } - - if (device_may_wakeup(phy->dev)) - enable_irq_wake(motg->irq); - if (bus) - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); - - atomic_set(&motg->in_lpm, 1); - enable_irq(motg->irq); - - dev_info(phy->dev, "USB in low power mode\n"); - - return 0; -} - -static int msm_otg_resume(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - struct usb_bus *bus = phy->otg->host; - int cnt = 0; - unsigned temp; - - if (!atomic_read(&motg->in_lpm)) - return 0; - - if (!IS_ERR(motg->pclk_src)) - clk_enable(motg->pclk_src); - - clk_enable(motg->pclk); - clk_enable(motg->clk); - if (motg->core_clk) - clk_enable(motg->core_clk); - - if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY && - motg->pdata->otg_control == OTG_PMIC_CONTROL) { - msm_hsusb_ldo_set_mode(1); - msm_hsusb_config_vddcx(1); - writel(readl(USB_PHY_CTRL) & ~PHY_RETEN, USB_PHY_CTRL); - } - - temp = readl(USB_USBCMD); - temp &= ~ASYNC_INTR_CTRL; - temp &= ~ULPI_STP_CTRL; - writel(temp, USB_USBCMD); - - /* - * PHY comes out of low power mode (LPM) in case of wakeup - * from asynchronous interrupt. - */ - if (!(readl(USB_PORTSC) & PORTSC_PHCD)) - goto skip_phy_resume; - - writel(readl(USB_PORTSC) & ~PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_RESUME_TIMEOUT_USEC) { - if (!(readl(USB_PORTSC) & PORTSC_PHCD)) - break; - udelay(1); - cnt++; - } - - if (cnt >= PHY_RESUME_TIMEOUT_USEC) { - /* - * This is a fatal error. Reset the link and - * PHY. USB state can not be restored. Re-insertion - * of USB cable is the only way to get USB working. - */ - dev_err(phy->dev, "Unable to resume USB." - "Re-plugin the cable\n"); - msm_otg_reset(phy); - } - -skip_phy_resume: - if (device_may_wakeup(phy->dev)) - disable_irq_wake(motg->irq); - if (bus) - set_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); - - atomic_set(&motg->in_lpm, 0); - - if (motg->async_int) { - motg->async_int = 0; - pm_runtime_put(phy->dev); - enable_irq(motg->irq); - } - - dev_info(phy->dev, "USB exited from low power mode\n"); - - return 0; -} -#endif - -static void msm_otg_notify_charger(struct msm_otg *motg, unsigned mA) -{ - if (motg->cur_power == mA) - return; - - /* TODO: Notify PMIC about available current */ - dev_info(motg->phy.dev, "Avail curr from USB = %u\n", mA); - motg->cur_power = mA; -} - -static int msm_otg_set_power(struct usb_phy *phy, unsigned mA) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - - /* - * Gadget driver uses set_power method to notify about the - * available current based on suspend/configured states. - * - * IDEV_CHG can be drawn irrespective of suspend/un-configured - * states when CDP/ACA is connected. - */ - if (motg->chg_type == USB_SDP_CHARGER) - msm_otg_notify_charger(motg, mA); - - return 0; -} - -static void msm_otg_start_host(struct usb_phy *phy, int on) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - struct usb_hcd *hcd; - - if (!phy->otg->host) - return; - - hcd = bus_to_hcd(phy->otg->host); - - if (on) { - dev_dbg(phy->dev, "host on\n"); - - if (pdata->vbus_power) - pdata->vbus_power(1); - /* - * Some boards have a switch cotrolled by gpio - * to enable/disable internal HUB. Enable internal - * HUB before kicking the host. - */ - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_A_HOST); -#ifdef CONFIG_USB - usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); -#endif - } else { - dev_dbg(phy->dev, "host off\n"); - -#ifdef CONFIG_USB - usb_remove_hcd(hcd); -#endif - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_UNDEFINED); - if (pdata->vbus_power) - pdata->vbus_power(0); - } -} - -static int msm_otg_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct msm_otg *motg = container_of(otg->phy, struct msm_otg, phy); - struct usb_hcd *hcd; - - /* - * Fail host registration if this board can support - * only peripheral configuration. - */ - if (motg->pdata->mode == USB_PERIPHERAL) { - dev_info(otg->phy->dev, "Host mode is not supported\n"); - return -ENODEV; - } - - if (!host) { - if (otg->phy->state == OTG_STATE_A_HOST) { - pm_runtime_get_sync(otg->phy->dev); - msm_otg_start_host(otg->phy, 0); - otg->host = NULL; - otg->phy->state = OTG_STATE_UNDEFINED; - schedule_work(&motg->sm_work); - } else { - otg->host = NULL; - } - - return 0; - } - - hcd = bus_to_hcd(host); - hcd->power_budget = motg->pdata->power_budget; - - otg->host = host; - dev_dbg(otg->phy->dev, "host driver registered w/ tranceiver\n"); - - /* - * Kick the state machine work, if peripheral is not supported - * or peripheral is already registered with us. - */ - if (motg->pdata->mode == USB_HOST || otg->gadget) { - pm_runtime_get_sync(otg->phy->dev); - schedule_work(&motg->sm_work); - } - - return 0; -} - -static void msm_otg_start_peripheral(struct usb_phy *phy, int on) -{ - struct msm_otg *motg = container_of(phy, struct msm_otg, phy); - struct msm_otg_platform_data *pdata = motg->pdata; - - if (!phy->otg->gadget) - return; - - if (on) { - dev_dbg(phy->dev, "gadget on\n"); - /* - * Some boards have a switch cotrolled by gpio - * to enable/disable internal HUB. Disable internal - * HUB before kicking the gadget. - */ - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_B_PERIPHERAL); - usb_gadget_vbus_connect(phy->otg->gadget); - } else { - dev_dbg(phy->dev, "gadget off\n"); - usb_gadget_vbus_disconnect(phy->otg->gadget); - if (pdata->setup_gpio) - pdata->setup_gpio(OTG_STATE_UNDEFINED); - } - -} - -static int msm_otg_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - struct msm_otg *motg = container_of(otg->phy, struct msm_otg, phy); - - /* - * Fail peripheral registration if this board can support - * only host configuration. - */ - if (motg->pdata->mode == USB_HOST) { - dev_info(otg->phy->dev, "Peripheral mode is not supported\n"); - return -ENODEV; - } - - if (!gadget) { - if (otg->phy->state == OTG_STATE_B_PERIPHERAL) { - pm_runtime_get_sync(otg->phy->dev); - msm_otg_start_peripheral(otg->phy, 0); - otg->gadget = NULL; - otg->phy->state = OTG_STATE_UNDEFINED; - schedule_work(&motg->sm_work); - } else { - otg->gadget = NULL; - } - - return 0; - } - otg->gadget = gadget; - dev_dbg(otg->phy->dev, "peripheral driver registered w/ tranceiver\n"); - - /* - * Kick the state machine work, if host is not supported - * or host is already registered with us. - */ - if (motg->pdata->mode == USB_PERIPHERAL || otg->host) { - pm_runtime_get_sync(otg->phy->dev); - schedule_work(&motg->sm_work); - } - - return 0; -} - -static bool msm_chg_check_secondary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - ret = chg_det & (1 << 4); - break; - case SNPS_28NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x87); - ret = chg_det & 1; - break; - default: - break; - } - return ret; -} - -static void msm_chg_enable_secondary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn off charger block */ - chg_det |= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - /* control chg block via ULPI */ - chg_det &= ~(1 << 3); - ulpi_write(phy, chg_det, 0x34); - /* put it in host mode for enabling D- source */ - chg_det &= ~(1 << 2); - ulpi_write(phy, chg_det, 0x34); - /* Turn on chg detect block */ - chg_det &= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - /* enable chg detection */ - chg_det &= ~(1 << 0); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* - * Configure DM as current source, DP as current sink - * and enable battery charging comparators. - */ - ulpi_write(phy, 0x8, 0x85); - ulpi_write(phy, 0x2, 0x85); - ulpi_write(phy, 0x1, 0x85); - break; - default: - break; - } -} - -static bool msm_chg_check_primary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - ret = chg_det & (1 << 4); - break; - case SNPS_28NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x87); - ret = chg_det & 1; - break; - default: - break; - } - return ret; -} - -static void msm_chg_enable_primary_det(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* enable chg detection */ - chg_det &= ~(1 << 0); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* - * Configure DP as current source, DM as current sink - * and enable battery charging comparators. - */ - ulpi_write(phy, 0x2, 0x85); - ulpi_write(phy, 0x1, 0x85); - break; - default: - break; - } -} - -static bool msm_chg_check_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 line_state; - bool ret = false; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - line_state = ulpi_read(phy, 0x15); - ret = !(line_state & 1); - break; - case SNPS_28NM_INTEGRATED_PHY: - line_state = ulpi_read(phy, 0x87); - ret = line_state & 2; - break; - default: - break; - } - return ret; -} - -static void msm_chg_disable_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - chg_det &= ~(1 << 5); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - ulpi_write(phy, 0x10, 0x86); - break; - default: - break; - } -} - -static void msm_chg_enable_dcd(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn on D+ current source */ - chg_det |= (1 << 5); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Data contact detection enable */ - ulpi_write(phy, 0x10, 0x85); - break; - default: - break; - } -} - -static void msm_chg_block_on(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 func_ctrl, chg_det; - - /* put the controller in non-driving mode */ - func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL); - func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL); - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* control chg block via ULPI */ - chg_det &= ~(1 << 3); - ulpi_write(phy, chg_det, 0x34); - /* Turn on chg detect block */ - chg_det &= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - udelay(20); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Clear charger detecting control bits */ - ulpi_write(phy, 0x3F, 0x86); - /* Clear alt interrupt latch and enable bits */ - ulpi_write(phy, 0x1F, 0x92); - ulpi_write(phy, 0x1F, 0x95); - udelay(100); - break; - default: - break; - } -} - -static void msm_chg_block_off(struct msm_otg *motg) -{ - struct usb_phy *phy = &motg->phy; - u32 func_ctrl, chg_det; - - switch (motg->pdata->phy_type) { - case CI_45NM_INTEGRATED_PHY: - chg_det = ulpi_read(phy, 0x34); - /* Turn off charger block */ - chg_det |= ~(1 << 1); - ulpi_write(phy, chg_det, 0x34); - break; - case SNPS_28NM_INTEGRATED_PHY: - /* Clear charger detecting control bits */ - ulpi_write(phy, 0x3F, 0x86); - /* Clear alt interrupt latch and enable bits */ - ulpi_write(phy, 0x1F, 0x92); - ulpi_write(phy, 0x1F, 0x95); - break; - default: - break; - } - - /* put the controller in normal mode */ - func_ctrl = ulpi_read(phy, ULPI_FUNC_CTRL); - func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK; - func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - ulpi_write(phy, func_ctrl, ULPI_FUNC_CTRL); -} - -#define MSM_CHG_DCD_POLL_TIME (100 * HZ/1000) /* 100 msec */ -#define MSM_CHG_DCD_MAX_RETRIES 6 /* Tdcd_tmout = 6 * 100 msec */ -#define MSM_CHG_PRIMARY_DET_TIME (40 * HZ/1000) /* TVDPSRC_ON */ -#define MSM_CHG_SECONDARY_DET_TIME (40 * HZ/1000) /* TVDMSRC_ON */ -static void msm_chg_detect_work(struct work_struct *w) -{ - struct msm_otg *motg = container_of(w, struct msm_otg, chg_work.work); - struct usb_phy *phy = &motg->phy; - bool is_dcd, tmout, vout; - unsigned long delay; - - dev_dbg(phy->dev, "chg detection work\n"); - switch (motg->chg_state) { - case USB_CHG_STATE_UNDEFINED: - pm_runtime_get_sync(phy->dev); - msm_chg_block_on(motg); - msm_chg_enable_dcd(motg); - motg->chg_state = USB_CHG_STATE_WAIT_FOR_DCD; - motg->dcd_retries = 0; - delay = MSM_CHG_DCD_POLL_TIME; - break; - case USB_CHG_STATE_WAIT_FOR_DCD: - is_dcd = msm_chg_check_dcd(motg); - tmout = ++motg->dcd_retries == MSM_CHG_DCD_MAX_RETRIES; - if (is_dcd || tmout) { - msm_chg_disable_dcd(motg); - msm_chg_enable_primary_det(motg); - delay = MSM_CHG_PRIMARY_DET_TIME; - motg->chg_state = USB_CHG_STATE_DCD_DONE; - } else { - delay = MSM_CHG_DCD_POLL_TIME; - } - break; - case USB_CHG_STATE_DCD_DONE: - vout = msm_chg_check_primary_det(motg); - if (vout) { - msm_chg_enable_secondary_det(motg); - delay = MSM_CHG_SECONDARY_DET_TIME; - motg->chg_state = USB_CHG_STATE_PRIMARY_DONE; - } else { - motg->chg_type = USB_SDP_CHARGER; - motg->chg_state = USB_CHG_STATE_DETECTED; - delay = 0; - } - break; - case USB_CHG_STATE_PRIMARY_DONE: - vout = msm_chg_check_secondary_det(motg); - if (vout) - motg->chg_type = USB_DCP_CHARGER; - else - motg->chg_type = USB_CDP_CHARGER; - motg->chg_state = USB_CHG_STATE_SECONDARY_DONE; - /* fall through */ - case USB_CHG_STATE_SECONDARY_DONE: - motg->chg_state = USB_CHG_STATE_DETECTED; - case USB_CHG_STATE_DETECTED: - msm_chg_block_off(motg); - dev_dbg(phy->dev, "charger = %d\n", motg->chg_type); - schedule_work(&motg->sm_work); - return; - default: - return; - } - - schedule_delayed_work(&motg->chg_work, delay); -} - -/* - * We support OTG, Peripheral only and Host only configurations. In case - * of OTG, mode switch (host-->peripheral/peripheral-->host) can happen - * via Id pin status or user request (debugfs). Id/BSV interrupts are not - * enabled when switch is controlled by user and default mode is supplied - * by board file, which can be changed by userspace later. - */ -static void msm_otg_init_sm(struct msm_otg *motg) -{ - struct msm_otg_platform_data *pdata = motg->pdata; - u32 otgsc = readl(USB_OTGSC); - - switch (pdata->mode) { - case USB_OTG: - if (pdata->otg_control == OTG_PHY_CONTROL) { - if (otgsc & OTGSC_ID) - set_bit(ID, &motg->inputs); - else - clear_bit(ID, &motg->inputs); - - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - } else if (pdata->otg_control == OTG_USER_CONTROL) { - if (pdata->default_mode == USB_HOST) { - clear_bit(ID, &motg->inputs); - } else if (pdata->default_mode == USB_PERIPHERAL) { - set_bit(ID, &motg->inputs); - set_bit(B_SESS_VLD, &motg->inputs); - } else { - set_bit(ID, &motg->inputs); - clear_bit(B_SESS_VLD, &motg->inputs); - } - } - break; - case USB_HOST: - clear_bit(ID, &motg->inputs); - break; - case USB_PERIPHERAL: - set_bit(ID, &motg->inputs); - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - break; - default: - break; - } -} - -static void msm_otg_sm_work(struct work_struct *w) -{ - struct msm_otg *motg = container_of(w, struct msm_otg, sm_work); - struct usb_otg *otg = motg->phy.otg; - - switch (otg->phy->state) { - case OTG_STATE_UNDEFINED: - dev_dbg(otg->phy->dev, "OTG_STATE_UNDEFINED state\n"); - msm_otg_reset(otg->phy); - msm_otg_init_sm(motg); - otg->phy->state = OTG_STATE_B_IDLE; - /* FALL THROUGH */ - case OTG_STATE_B_IDLE: - dev_dbg(otg->phy->dev, "OTG_STATE_B_IDLE state\n"); - if (!test_bit(ID, &motg->inputs) && otg->host) { - /* disable BSV bit */ - writel(readl(USB_OTGSC) & ~OTGSC_BSVIE, USB_OTGSC); - msm_otg_start_host(otg->phy, 1); - otg->phy->state = OTG_STATE_A_HOST; - } else if (test_bit(B_SESS_VLD, &motg->inputs)) { - switch (motg->chg_state) { - case USB_CHG_STATE_UNDEFINED: - msm_chg_detect_work(&motg->chg_work.work); - break; - case USB_CHG_STATE_DETECTED: - switch (motg->chg_type) { - case USB_DCP_CHARGER: - msm_otg_notify_charger(motg, - IDEV_CHG_MAX); - break; - case USB_CDP_CHARGER: - msm_otg_notify_charger(motg, - IDEV_CHG_MAX); - msm_otg_start_peripheral(otg->phy, 1); - otg->phy->state - = OTG_STATE_B_PERIPHERAL; - break; - case USB_SDP_CHARGER: - msm_otg_notify_charger(motg, IUNIT); - msm_otg_start_peripheral(otg->phy, 1); - otg->phy->state - = OTG_STATE_B_PERIPHERAL; - break; - default: - break; - } - break; - default: - break; - } - } else { - /* - * If charger detection work is pending, decrement - * the pm usage counter to balance with the one that - * is incremented in charger detection work. - */ - if (cancel_delayed_work_sync(&motg->chg_work)) { - pm_runtime_put_sync(otg->phy->dev); - msm_otg_reset(otg->phy); - } - msm_otg_notify_charger(motg, 0); - motg->chg_state = USB_CHG_STATE_UNDEFINED; - motg->chg_type = USB_INVALID_CHARGER; - } - pm_runtime_put_sync(otg->phy->dev); - break; - case OTG_STATE_B_PERIPHERAL: - dev_dbg(otg->phy->dev, "OTG_STATE_B_PERIPHERAL state\n"); - if (!test_bit(B_SESS_VLD, &motg->inputs) || - !test_bit(ID, &motg->inputs)) { - msm_otg_notify_charger(motg, 0); - msm_otg_start_peripheral(otg->phy, 0); - motg->chg_state = USB_CHG_STATE_UNDEFINED; - motg->chg_type = USB_INVALID_CHARGER; - otg->phy->state = OTG_STATE_B_IDLE; - msm_otg_reset(otg->phy); - schedule_work(w); - } - break; - case OTG_STATE_A_HOST: - dev_dbg(otg->phy->dev, "OTG_STATE_A_HOST state\n"); - if (test_bit(ID, &motg->inputs)) { - msm_otg_start_host(otg->phy, 0); - otg->phy->state = OTG_STATE_B_IDLE; - msm_otg_reset(otg->phy); - schedule_work(w); - } - break; - default: - break; - } -} - -static irqreturn_t msm_otg_irq(int irq, void *data) -{ - struct msm_otg *motg = data; - struct usb_phy *phy = &motg->phy; - u32 otgsc = 0; - - if (atomic_read(&motg->in_lpm)) { - disable_irq_nosync(irq); - motg->async_int = 1; - pm_runtime_get(phy->dev); - return IRQ_HANDLED; - } - - otgsc = readl(USB_OTGSC); - if (!(otgsc & (OTGSC_IDIS | OTGSC_BSVIS))) - return IRQ_NONE; - - if ((otgsc & OTGSC_IDIS) && (otgsc & OTGSC_IDIE)) { - if (otgsc & OTGSC_ID) - set_bit(ID, &motg->inputs); - else - clear_bit(ID, &motg->inputs); - dev_dbg(phy->dev, "ID set/clear\n"); - pm_runtime_get_noresume(phy->dev); - } else if ((otgsc & OTGSC_BSVIS) && (otgsc & OTGSC_BSVIE)) { - if (otgsc & OTGSC_BSV) - set_bit(B_SESS_VLD, &motg->inputs); - else - clear_bit(B_SESS_VLD, &motg->inputs); - dev_dbg(phy->dev, "BSV set/clear\n"); - pm_runtime_get_noresume(phy->dev); - } - - writel(otgsc, USB_OTGSC); - schedule_work(&motg->sm_work); - return IRQ_HANDLED; -} - -static int msm_otg_mode_show(struct seq_file *s, void *unused) -{ - struct msm_otg *motg = s->private; - struct usb_otg *otg = motg->phy.otg; - - switch (otg->phy->state) { - case OTG_STATE_A_HOST: - seq_printf(s, "host\n"); - break; - case OTG_STATE_B_PERIPHERAL: - seq_printf(s, "peripheral\n"); - break; - default: - seq_printf(s, "none\n"); - break; - } - - return 0; -} - -static int msm_otg_mode_open(struct inode *inode, struct file *file) -{ - return single_open(file, msm_otg_mode_show, inode->i_private); -} - -static ssize_t msm_otg_mode_write(struct file *file, const char __user *ubuf, - size_t count, loff_t *ppos) -{ - struct seq_file *s = file->private_data; - struct msm_otg *motg = s->private; - char buf[16]; - struct usb_otg *otg = motg->phy.otg; - int status = count; - enum usb_mode_type req_mode; - - memset(buf, 0x00, sizeof(buf)); - - if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) { - status = -EFAULT; - goto out; - } - - if (!strncmp(buf, "host", 4)) { - req_mode = USB_HOST; - } else if (!strncmp(buf, "peripheral", 10)) { - req_mode = USB_PERIPHERAL; - } else if (!strncmp(buf, "none", 4)) { - req_mode = USB_NONE; - } else { - status = -EINVAL; - goto out; - } - - switch (req_mode) { - case USB_NONE: - switch (otg->phy->state) { - case OTG_STATE_A_HOST: - case OTG_STATE_B_PERIPHERAL: - set_bit(ID, &motg->inputs); - clear_bit(B_SESS_VLD, &motg->inputs); - break; - default: - goto out; - } - break; - case USB_PERIPHERAL: - switch (otg->phy->state) { - case OTG_STATE_B_IDLE: - case OTG_STATE_A_HOST: - set_bit(ID, &motg->inputs); - set_bit(B_SESS_VLD, &motg->inputs); - break; - default: - goto out; - } - break; - case USB_HOST: - switch (otg->phy->state) { - case OTG_STATE_B_IDLE: - case OTG_STATE_B_PERIPHERAL: - clear_bit(ID, &motg->inputs); - break; - default: - goto out; - } - break; - default: - goto out; - } - - pm_runtime_get_sync(otg->phy->dev); - schedule_work(&motg->sm_work); -out: - return status; -} - -const struct file_operations msm_otg_mode_fops = { - .open = msm_otg_mode_open, - .read = seq_read, - .write = msm_otg_mode_write, - .llseek = seq_lseek, - .release = single_release, -}; - -static struct dentry *msm_otg_dbg_root; -static struct dentry *msm_otg_dbg_mode; - -static int msm_otg_debugfs_init(struct msm_otg *motg) -{ - msm_otg_dbg_root = debugfs_create_dir("msm_otg", NULL); - - if (!msm_otg_dbg_root || IS_ERR(msm_otg_dbg_root)) - return -ENODEV; - - msm_otg_dbg_mode = debugfs_create_file("mode", S_IRUGO | S_IWUSR, - msm_otg_dbg_root, motg, &msm_otg_mode_fops); - if (!msm_otg_dbg_mode) { - debugfs_remove(msm_otg_dbg_root); - msm_otg_dbg_root = NULL; - return -ENODEV; - } - - return 0; -} - -static void msm_otg_debugfs_cleanup(void) -{ - debugfs_remove(msm_otg_dbg_mode); - debugfs_remove(msm_otg_dbg_root); -} - -static int __init msm_otg_probe(struct platform_device *pdev) -{ - int ret = 0; - struct resource *res; - struct msm_otg *motg; - struct usb_phy *phy; - - dev_info(&pdev->dev, "msm_otg probe\n"); - if (!pdev->dev.platform_data) { - dev_err(&pdev->dev, "No platform data given. Bailing out\n"); - return -ENODEV; - } - - motg = kzalloc(sizeof(struct msm_otg), GFP_KERNEL); - if (!motg) { - dev_err(&pdev->dev, "unable to allocate msm_otg\n"); - return -ENOMEM; - } - - motg->phy.otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL); - if (!motg->phy.otg) { - dev_err(&pdev->dev, "unable to allocate msm_otg\n"); - return -ENOMEM; - } - - motg->pdata = pdev->dev.platform_data; - phy = &motg->phy; - phy->dev = &pdev->dev; - - motg->phy_reset_clk = clk_get(&pdev->dev, "usb_phy_clk"); - if (IS_ERR(motg->phy_reset_clk)) { - dev_err(&pdev->dev, "failed to get usb_phy_clk\n"); - ret = PTR_ERR(motg->phy_reset_clk); - goto free_motg; - } - - motg->clk = clk_get(&pdev->dev, "usb_hs_clk"); - if (IS_ERR(motg->clk)) { - dev_err(&pdev->dev, "failed to get usb_hs_clk\n"); - ret = PTR_ERR(motg->clk); - goto put_phy_reset_clk; - } - clk_set_rate(motg->clk, 60000000); - - /* - * If USB Core is running its protocol engine based on CORE CLK, - * CORE CLK must be running at >55Mhz for correct HSUSB - * operation and USB core cannot tolerate frequency changes on - * CORE CLK. For such USB cores, vote for maximum clk frequency - * on pclk source - */ - if (motg->pdata->pclk_src_name) { - motg->pclk_src = clk_get(&pdev->dev, - motg->pdata->pclk_src_name); - if (IS_ERR(motg->pclk_src)) - goto put_clk; - clk_set_rate(motg->pclk_src, INT_MAX); - clk_enable(motg->pclk_src); - } else - motg->pclk_src = ERR_PTR(-ENOENT); - - - motg->pclk = clk_get(&pdev->dev, "usb_hs_pclk"); - if (IS_ERR(motg->pclk)) { - dev_err(&pdev->dev, "failed to get usb_hs_pclk\n"); - ret = PTR_ERR(motg->pclk); - goto put_pclk_src; - } - - /* - * USB core clock is not present on all MSM chips. This - * clock is introduced to remove the dependency on AXI - * bus frequency. - */ - motg->core_clk = clk_get(&pdev->dev, "usb_hs_core_clk"); - if (IS_ERR(motg->core_clk)) - motg->core_clk = NULL; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "failed to get platform resource mem\n"); - ret = -ENODEV; - goto put_core_clk; - } - - motg->regs = ioremap(res->start, resource_size(res)); - if (!motg->regs) { - dev_err(&pdev->dev, "ioremap failed\n"); - ret = -ENOMEM; - goto put_core_clk; - } - dev_info(&pdev->dev, "OTG regs = %p\n", motg->regs); - - motg->irq = platform_get_irq(pdev, 0); - if (!motg->irq) { - dev_err(&pdev->dev, "platform_get_irq failed\n"); - ret = -ENODEV; - goto free_regs; - } - - clk_enable(motg->clk); - clk_enable(motg->pclk); - - ret = msm_hsusb_init_vddcx(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vddcx configuration failed\n"); - goto free_regs; - } - - ret = msm_hsusb_ldo_init(motg, 1); - if (ret) { - dev_err(&pdev->dev, "hsusb vreg configuration failed\n"); - goto vddcx_exit; - } - ret = msm_hsusb_ldo_set_mode(1); - if (ret) { - dev_err(&pdev->dev, "hsusb vreg enable failed\n"); - goto ldo_exit; - } - - if (motg->core_clk) - clk_enable(motg->core_clk); - - writel(0, USB_USBINTR); - writel(0, USB_OTGSC); - - INIT_WORK(&motg->sm_work, msm_otg_sm_work); - INIT_DELAYED_WORK(&motg->chg_work, msm_chg_detect_work); - ret = request_irq(motg->irq, msm_otg_irq, IRQF_SHARED, - "msm_otg", motg); - if (ret) { - dev_err(&pdev->dev, "request irq failed\n"); - goto disable_clks; - } - - phy->init = msm_otg_reset; - phy->set_power = msm_otg_set_power; - - phy->io_ops = &msm_otg_io_ops; - - phy->otg->phy = &motg->phy; - phy->otg->set_host = msm_otg_set_host; - phy->otg->set_peripheral = msm_otg_set_peripheral; - - ret = usb_add_phy(&motg->phy, USB_PHY_TYPE_USB2); - if (ret) { - dev_err(&pdev->dev, "usb_add_phy failed\n"); - goto free_irq; - } - - platform_set_drvdata(pdev, motg); - device_init_wakeup(&pdev->dev, 1); - - if (motg->pdata->mode == USB_OTG && - motg->pdata->otg_control == OTG_USER_CONTROL) { - ret = msm_otg_debugfs_init(motg); - if (ret) - dev_dbg(&pdev->dev, "mode debugfs file is" - "not available\n"); - } - - pm_runtime_set_active(&pdev->dev); - pm_runtime_enable(&pdev->dev); - - return 0; -free_irq: - free_irq(motg->irq, motg); -disable_clks: - clk_disable(motg->pclk); - clk_disable(motg->clk); -ldo_exit: - msm_hsusb_ldo_init(motg, 0); -vddcx_exit: - msm_hsusb_init_vddcx(motg, 0); -free_regs: - iounmap(motg->regs); -put_core_clk: - if (motg->core_clk) - clk_put(motg->core_clk); - clk_put(motg->pclk); -put_pclk_src: - if (!IS_ERR(motg->pclk_src)) { - clk_disable(motg->pclk_src); - clk_put(motg->pclk_src); - } -put_clk: - clk_put(motg->clk); -put_phy_reset_clk: - clk_put(motg->phy_reset_clk); -free_motg: - kfree(motg->phy.otg); - kfree(motg); - return ret; -} - -static int msm_otg_remove(struct platform_device *pdev) -{ - struct msm_otg *motg = platform_get_drvdata(pdev); - struct usb_phy *phy = &motg->phy; - int cnt = 0; - - if (phy->otg->host || phy->otg->gadget) - return -EBUSY; - - msm_otg_debugfs_cleanup(); - cancel_delayed_work_sync(&motg->chg_work); - cancel_work_sync(&motg->sm_work); - - pm_runtime_resume(&pdev->dev); - - device_init_wakeup(&pdev->dev, 0); - pm_runtime_disable(&pdev->dev); - - usb_remove_phy(phy); - free_irq(motg->irq, motg); - - /* - * Put PHY in low power mode. - */ - ulpi_read(phy, 0x14); - ulpi_write(phy, 0x08, 0x09); - - writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); - while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { - if (readl(USB_PORTSC) & PORTSC_PHCD) - break; - udelay(1); - cnt++; - } - if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) - dev_err(phy->dev, "Unable to suspend PHY\n"); - - clk_disable(motg->pclk); - clk_disable(motg->clk); - if (motg->core_clk) - clk_disable(motg->core_clk); - if (!IS_ERR(motg->pclk_src)) { - clk_disable(motg->pclk_src); - clk_put(motg->pclk_src); - } - msm_hsusb_ldo_init(motg, 0); - - iounmap(motg->regs); - pm_runtime_set_suspended(&pdev->dev); - - clk_put(motg->phy_reset_clk); - clk_put(motg->pclk); - clk_put(motg->clk); - if (motg->core_clk) - clk_put(motg->core_clk); - - kfree(motg->phy.otg); - kfree(motg); - - return 0; -} - -#ifdef CONFIG_PM_RUNTIME -static int msm_otg_runtime_idle(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - struct usb_otg *otg = motg->phy.otg; - - dev_dbg(dev, "OTG runtime idle\n"); - - /* - * It is observed some times that a spurious interrupt - * comes when PHY is put into LPM immediately after PHY reset. - * This 1 sec delay also prevents entering into LPM immediately - * after asynchronous interrupt. - */ - if (otg->phy->state != OTG_STATE_UNDEFINED) - pm_schedule_suspend(dev, 1000); - - return -EAGAIN; -} - -static int msm_otg_runtime_suspend(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG runtime suspend\n"); - return msm_otg_suspend(motg); -} - -static int msm_otg_runtime_resume(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG runtime resume\n"); - return msm_otg_resume(motg); -} -#endif - -#ifdef CONFIG_PM_SLEEP -static int msm_otg_pm_suspend(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - - dev_dbg(dev, "OTG PM suspend\n"); - return msm_otg_suspend(motg); -} - -static int msm_otg_pm_resume(struct device *dev) -{ - struct msm_otg *motg = dev_get_drvdata(dev); - int ret; - - dev_dbg(dev, "OTG PM resume\n"); - - ret = msm_otg_resume(motg); - if (ret) - return ret; - - /* - * Runtime PM Documentation recommends bringing the - * device to full powered state upon resume. - */ - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - - return 0; -} -#endif - -#ifdef CONFIG_PM -static const struct dev_pm_ops msm_otg_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(msm_otg_pm_suspend, msm_otg_pm_resume) - SET_RUNTIME_PM_OPS(msm_otg_runtime_suspend, msm_otg_runtime_resume, - msm_otg_runtime_idle) -}; -#endif - -static struct platform_driver msm_otg_driver = { - .remove = msm_otg_remove, - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, -#ifdef CONFIG_PM - .pm = &msm_otg_dev_pm_ops, -#endif - }, -}; - -module_platform_driver_probe(msm_otg_driver, msm_otg_probe); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("MSM USB transceiver driver"); diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c deleted file mode 100644 index b6a9be31133..00000000000 --- a/drivers/usb/otg/mv_otg.c +++ /dev/null @@ -1,923 +0,0 @@ -/* - * Copyright (C) 2011 Marvell International Ltd. All rights reserved. - * Author: Chao Xie <chao.xie@marvell.com> - * Neil Zhang <zhangwm@marvell.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/io.h> -#include <linux/uaccess.h> -#include <linux/device.h> -#include <linux/proc_fs.h> -#include <linux/clk.h> -#include <linux/workqueue.h> -#include <linux/platform_device.h> - -#include <linux/usb.h> -#include <linux/usb/ch9.h> -#include <linux/usb/otg.h> -#include <linux/usb/gadget.h> -#include <linux/usb/hcd.h> -#include <linux/platform_data/mv_usb.h> - -#include "mv_otg.h" - -#define DRIVER_DESC "Marvell USB OTG transceiver driver" -#define DRIVER_VERSION "Jan 20, 2010" - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_VERSION(DRIVER_VERSION); -MODULE_LICENSE("GPL"); - -static const char driver_name[] = "mv-otg"; - -static char *state_string[] = { - "undefined", - "b_idle", - "b_srp_init", - "b_peripheral", - "b_wait_acon", - "b_host", - "a_idle", - "a_wait_vrise", - "a_wait_bcon", - "a_host", - "a_suspend", - "a_peripheral", - "a_wait_vfall", - "a_vbus_err" -}; - -static int mv_otg_set_vbus(struct usb_otg *otg, bool on) -{ - struct mv_otg *mvotg = container_of(otg->phy, struct mv_otg, phy); - if (mvotg->pdata->set_vbus == NULL) - return -ENODEV; - - return mvotg->pdata->set_vbus(on); -} - -static int mv_otg_set_host(struct usb_otg *otg, - struct usb_bus *host) -{ - otg->host = host; - - return 0; -} - -static int mv_otg_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - otg->gadget = gadget; - - return 0; -} - -static void mv_otg_run_state_machine(struct mv_otg *mvotg, - unsigned long delay) -{ - dev_dbg(&mvotg->pdev->dev, "transceiver is updated\n"); - if (!mvotg->qwork) - return; - - queue_delayed_work(mvotg->qwork, &mvotg->work, delay); -} - -static void mv_otg_timer_await_bcon(unsigned long data) -{ - struct mv_otg *mvotg = (struct mv_otg *) data; - - mvotg->otg_ctrl.a_wait_bcon_timeout = 1; - - dev_info(&mvotg->pdev->dev, "B Device No Response!\n"); - - if (spin_trylock(&mvotg->wq_lock)) { - mv_otg_run_state_machine(mvotg, 0); - spin_unlock(&mvotg->wq_lock); - } -} - -static int mv_otg_cancel_timer(struct mv_otg *mvotg, unsigned int id) -{ - struct timer_list *timer; - - if (id >= OTG_TIMER_NUM) - return -EINVAL; - - timer = &mvotg->otg_ctrl.timer[id]; - - if (timer_pending(timer)) - del_timer(timer); - - return 0; -} - -static int mv_otg_set_timer(struct mv_otg *mvotg, unsigned int id, - unsigned long interval, - void (*callback) (unsigned long)) -{ - struct timer_list *timer; - - if (id >= OTG_TIMER_NUM) - return -EINVAL; - - timer = &mvotg->otg_ctrl.timer[id]; - if (timer_pending(timer)) { - dev_err(&mvotg->pdev->dev, "Timer%d is already running\n", id); - return -EBUSY; - } - - init_timer(timer); - timer->data = (unsigned long) mvotg; - timer->function = callback; - timer->expires = jiffies + interval; - add_timer(timer); - - return 0; -} - -static int mv_otg_reset(struct mv_otg *mvotg) -{ - unsigned int loops; - u32 tmp; - - /* Stop the controller */ - tmp = readl(&mvotg->op_regs->usbcmd); - tmp &= ~USBCMD_RUN_STOP; - writel(tmp, &mvotg->op_regs->usbcmd); - - /* Reset the controller to get default values */ - writel(USBCMD_CTRL_RESET, &mvotg->op_regs->usbcmd); - - loops = 500; - while (readl(&mvotg->op_regs->usbcmd) & USBCMD_CTRL_RESET) { - if (loops == 0) { - dev_err(&mvotg->pdev->dev, - "Wait for RESET completed TIMEOUT\n"); - return -ETIMEDOUT; - } - loops--; - udelay(20); - } - - writel(0x0, &mvotg->op_regs->usbintr); - tmp = readl(&mvotg->op_regs->usbsts); - writel(tmp, &mvotg->op_regs->usbsts); - - return 0; -} - -static void mv_otg_init_irq(struct mv_otg *mvotg) -{ - u32 otgsc; - - mvotg->irq_en = OTGSC_INTR_A_SESSION_VALID - | OTGSC_INTR_A_VBUS_VALID; - mvotg->irq_status = OTGSC_INTSTS_A_SESSION_VALID - | OTGSC_INTSTS_A_VBUS_VALID; - - if (mvotg->pdata->vbus == NULL) { - mvotg->irq_en |= OTGSC_INTR_B_SESSION_VALID - | OTGSC_INTR_B_SESSION_END; - mvotg->irq_status |= OTGSC_INTSTS_B_SESSION_VALID - | OTGSC_INTSTS_B_SESSION_END; - } - - if (mvotg->pdata->id == NULL) { - mvotg->irq_en |= OTGSC_INTR_USB_ID; - mvotg->irq_status |= OTGSC_INTSTS_USB_ID; - } - - otgsc = readl(&mvotg->op_regs->otgsc); - otgsc |= mvotg->irq_en; - writel(otgsc, &mvotg->op_regs->otgsc); -} - -static void mv_otg_start_host(struct mv_otg *mvotg, int on) -{ -#ifdef CONFIG_USB - struct usb_otg *otg = mvotg->phy.otg; - struct usb_hcd *hcd; - - if (!otg->host) - return; - - dev_info(&mvotg->pdev->dev, "%s host\n", on ? "start" : "stop"); - - hcd = bus_to_hcd(otg->host); - - if (on) - usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); - else - usb_remove_hcd(hcd); -#endif /* CONFIG_USB */ -} - -static void mv_otg_start_periphrals(struct mv_otg *mvotg, int on) -{ - struct usb_otg *otg = mvotg->phy.otg; - - if (!otg->gadget) - return; - - dev_info(mvotg->phy.dev, "gadget %s\n", on ? "on" : "off"); - - if (on) - usb_gadget_vbus_connect(otg->gadget); - else - usb_gadget_vbus_disconnect(otg->gadget); -} - -static void otg_clock_enable(struct mv_otg *mvotg) -{ - unsigned int i; - - for (i = 0; i < mvotg->clknum; i++) - clk_prepare_enable(mvotg->clk[i]); -} - -static void otg_clock_disable(struct mv_otg *mvotg) -{ - unsigned int i; - - for (i = 0; i < mvotg->clknum; i++) - clk_disable_unprepare(mvotg->clk[i]); -} - -static int mv_otg_enable_internal(struct mv_otg *mvotg) -{ - int retval = 0; - - if (mvotg->active) - return 0; - - dev_dbg(&mvotg->pdev->dev, "otg enabled\n"); - - otg_clock_enable(mvotg); - if (mvotg->pdata->phy_init) { - retval = mvotg->pdata->phy_init(mvotg->phy_regs); - if (retval) { - dev_err(&mvotg->pdev->dev, - "init phy error %d\n", retval); - otg_clock_disable(mvotg); - return retval; - } - } - mvotg->active = 1; - - return 0; - -} - -static int mv_otg_enable(struct mv_otg *mvotg) -{ - if (mvotg->clock_gating) - return mv_otg_enable_internal(mvotg); - - return 0; -} - -static void mv_otg_disable_internal(struct mv_otg *mvotg) -{ - if (mvotg->active) { - dev_dbg(&mvotg->pdev->dev, "otg disabled\n"); - if (mvotg->pdata->phy_deinit) - mvotg->pdata->phy_deinit(mvotg->phy_regs); - otg_clock_disable(mvotg); - mvotg->active = 0; - } -} - -static void mv_otg_disable(struct mv_otg *mvotg) -{ - if (mvotg->clock_gating) - mv_otg_disable_internal(mvotg); -} - -static void mv_otg_update_inputs(struct mv_otg *mvotg) -{ - struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl; - u32 otgsc; - - otgsc = readl(&mvotg->op_regs->otgsc); - - if (mvotg->pdata->vbus) { - if (mvotg->pdata->vbus->poll() == VBUS_HIGH) { - otg_ctrl->b_sess_vld = 1; - otg_ctrl->b_sess_end = 0; - } else { - otg_ctrl->b_sess_vld = 0; - otg_ctrl->b_sess_end = 1; - } - } else { - otg_ctrl->b_sess_vld = !!(otgsc & OTGSC_STS_B_SESSION_VALID); - otg_ctrl->b_sess_end = !!(otgsc & OTGSC_STS_B_SESSION_END); - } - - if (mvotg->pdata->id) - otg_ctrl->id = !!mvotg->pdata->id->poll(); - else - otg_ctrl->id = !!(otgsc & OTGSC_STS_USB_ID); - - if (mvotg->pdata->otg_force_a_bus_req && !otg_ctrl->id) - otg_ctrl->a_bus_req = 1; - - otg_ctrl->a_sess_vld = !!(otgsc & OTGSC_STS_A_SESSION_VALID); - otg_ctrl->a_vbus_vld = !!(otgsc & OTGSC_STS_A_VBUS_VALID); - - dev_dbg(&mvotg->pdev->dev, "%s: ", __func__); - dev_dbg(&mvotg->pdev->dev, "id %d\n", otg_ctrl->id); - dev_dbg(&mvotg->pdev->dev, "b_sess_vld %d\n", otg_ctrl->b_sess_vld); - dev_dbg(&mvotg->pdev->dev, "b_sess_end %d\n", otg_ctrl->b_sess_end); - dev_dbg(&mvotg->pdev->dev, "a_vbus_vld %d\n", otg_ctrl->a_vbus_vld); - dev_dbg(&mvotg->pdev->dev, "a_sess_vld %d\n", otg_ctrl->a_sess_vld); -} - -static void mv_otg_update_state(struct mv_otg *mvotg) -{ - struct mv_otg_ctrl *otg_ctrl = &mvotg->otg_ctrl; - struct usb_phy *phy = &mvotg->phy; - int old_state = phy->state; - - switch (old_state) { - case OTG_STATE_UNDEFINED: - phy->state = OTG_STATE_B_IDLE; - /* FALL THROUGH */ - case OTG_STATE_B_IDLE: - if (otg_ctrl->id == 0) - phy->state = OTG_STATE_A_IDLE; - else if (otg_ctrl->b_sess_vld) - phy->state = OTG_STATE_B_PERIPHERAL; - break; - case OTG_STATE_B_PERIPHERAL: - if (!otg_ctrl->b_sess_vld || otg_ctrl->id == 0) - phy->state = OTG_STATE_B_IDLE; - break; - case OTG_STATE_A_IDLE: - if (otg_ctrl->id) - phy->state = OTG_STATE_B_IDLE; - else if (!(otg_ctrl->a_bus_drop) && - (otg_ctrl->a_bus_req || otg_ctrl->a_srp_det)) - phy->state = OTG_STATE_A_WAIT_VRISE; - break; - case OTG_STATE_A_WAIT_VRISE: - if (otg_ctrl->a_vbus_vld) - phy->state = OTG_STATE_A_WAIT_BCON; - break; - case OTG_STATE_A_WAIT_BCON: - if (otg_ctrl->id || otg_ctrl->a_bus_drop - || otg_ctrl->a_wait_bcon_timeout) { - mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); - mvotg->otg_ctrl.a_wait_bcon_timeout = 0; - phy->state = OTG_STATE_A_WAIT_VFALL; - otg_ctrl->a_bus_req = 0; - } else if (!otg_ctrl->a_vbus_vld) { - mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); - mvotg->otg_ctrl.a_wait_bcon_timeout = 0; - phy->state = OTG_STATE_A_VBUS_ERR; - } else if (otg_ctrl->b_conn) { - mv_otg_cancel_timer(mvotg, A_WAIT_BCON_TIMER); - mvotg->otg_ctrl.a_wait_bcon_timeout = 0; - phy->state = OTG_STATE_A_HOST; - } - break; - case OTG_STATE_A_HOST: - if (otg_ctrl->id || !otg_ctrl->b_conn - || otg_ctrl->a_bus_drop) - phy->state = OTG_STATE_A_WAIT_BCON; - else if (!otg_ctrl->a_vbus_vld) - phy->state = OTG_STATE_A_VBUS_ERR; - break; - case OTG_STATE_A_WAIT_VFALL: - if (otg_ctrl->id - || (!otg_ctrl->b_conn && otg_ctrl->a_sess_vld) - || otg_ctrl->a_bus_req) - phy->state = OTG_STATE_A_IDLE; - break; - case OTG_STATE_A_VBUS_ERR: - if (otg_ctrl->id || otg_ctrl->a_clr_err - || otg_ctrl->a_bus_drop) { - otg_ctrl->a_clr_err = 0; - phy->state = OTG_STATE_A_WAIT_VFALL; - } - break; - default: - break; - } -} - -static void mv_otg_work(struct work_struct *work) -{ - struct mv_otg *mvotg; - struct usb_phy *phy; - struct usb_otg *otg; - int old_state; - - mvotg = container_of(to_delayed_work(work), struct mv_otg, work); - -run: - /* work queue is single thread, or we need spin_lock to protect */ - phy = &mvotg->phy; - otg = phy->otg; - old_state = phy->state; - - if (!mvotg->active) - return; - - mv_otg_update_inputs(mvotg); - mv_otg_update_state(mvotg); - - if (old_state != phy->state) { - dev_info(&mvotg->pdev->dev, "change from state %s to %s\n", - state_string[old_state], - state_string[phy->state]); - - switch (phy->state) { - case OTG_STATE_B_IDLE: - otg->default_a = 0; - if (old_state == OTG_STATE_B_PERIPHERAL) - mv_otg_start_periphrals(mvotg, 0); - mv_otg_reset(mvotg); - mv_otg_disable(mvotg); - break; - case OTG_STATE_B_PERIPHERAL: - mv_otg_enable(mvotg); - mv_otg_start_periphrals(mvotg, 1); - break; - case OTG_STATE_A_IDLE: - otg->default_a = 1; - mv_otg_enable(mvotg); - if (old_state == OTG_STATE_A_WAIT_VFALL) - mv_otg_start_host(mvotg, 0); - mv_otg_reset(mvotg); - break; - case OTG_STATE_A_WAIT_VRISE: - mv_otg_set_vbus(otg, 1); - break; - case OTG_STATE_A_WAIT_BCON: - if (old_state != OTG_STATE_A_HOST) - mv_otg_start_host(mvotg, 1); - mv_otg_set_timer(mvotg, A_WAIT_BCON_TIMER, - T_A_WAIT_BCON, - mv_otg_timer_await_bcon); - /* - * Now, we directly enter A_HOST. So set b_conn = 1 - * here. In fact, it need host driver to notify us. - */ - mvotg->otg_ctrl.b_conn = 1; - break; - case OTG_STATE_A_HOST: - break; - case OTG_STATE_A_WAIT_VFALL: - /* - * Now, we has exited A_HOST. So set b_conn = 0 - * here. In fact, it need host driver to notify us. - */ - mvotg->otg_ctrl.b_conn = 0; - mv_otg_set_vbus(otg, 0); - break; - case OTG_STATE_A_VBUS_ERR: - break; - default: - break; - } - goto run; - } -} - -static irqreturn_t mv_otg_irq(int irq, void *dev) -{ - struct mv_otg *mvotg = dev; - u32 otgsc; - - otgsc = readl(&mvotg->op_regs->otgsc); - writel(otgsc, &mvotg->op_regs->otgsc); - - /* - * if we have vbus, then the vbus detection for B-device - * will be done by mv_otg_inputs_irq(). - */ - if (mvotg->pdata->vbus) - if ((otgsc & OTGSC_STS_USB_ID) && - !(otgsc & OTGSC_INTSTS_USB_ID)) - return IRQ_NONE; - - if ((otgsc & mvotg->irq_status) == 0) - return IRQ_NONE; - - mv_otg_run_state_machine(mvotg, 0); - - return IRQ_HANDLED; -} - -static irqreturn_t mv_otg_inputs_irq(int irq, void *dev) -{ - struct mv_otg *mvotg = dev; - - /* The clock may disabled at this time */ - if (!mvotg->active) { - mv_otg_enable(mvotg); - mv_otg_init_irq(mvotg); - } - - mv_otg_run_state_machine(mvotg, 0); - - return IRQ_HANDLED; -} - -static ssize_t -get_a_bus_req(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct mv_otg *mvotg = dev_get_drvdata(dev); - return scnprintf(buf, PAGE_SIZE, "%d\n", - mvotg->otg_ctrl.a_bus_req); -} - -static ssize_t -set_a_bus_req(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mv_otg *mvotg = dev_get_drvdata(dev); - - if (count > 2) - return -1; - - /* We will use this interface to change to A device */ - if (mvotg->phy.state != OTG_STATE_B_IDLE - && mvotg->phy.state != OTG_STATE_A_IDLE) - return -1; - - /* The clock may disabled and we need to set irq for ID detected */ - mv_otg_enable(mvotg); - mv_otg_init_irq(mvotg); - - if (buf[0] == '1') { - mvotg->otg_ctrl.a_bus_req = 1; - mvotg->otg_ctrl.a_bus_drop = 0; - dev_dbg(&mvotg->pdev->dev, - "User request: a_bus_req = 1\n"); - - if (spin_trylock(&mvotg->wq_lock)) { - mv_otg_run_state_machine(mvotg, 0); - spin_unlock(&mvotg->wq_lock); - } - } - - return count; -} - -static DEVICE_ATTR(a_bus_req, S_IRUGO | S_IWUSR, get_a_bus_req, - set_a_bus_req); - -static ssize_t -set_a_clr_err(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mv_otg *mvotg = dev_get_drvdata(dev); - if (!mvotg->phy.otg->default_a) - return -1; - - if (count > 2) - return -1; - - if (buf[0] == '1') { - mvotg->otg_ctrl.a_clr_err = 1; - dev_dbg(&mvotg->pdev->dev, - "User request: a_clr_err = 1\n"); - } - - if (spin_trylock(&mvotg->wq_lock)) { - mv_otg_run_state_machine(mvotg, 0); - spin_unlock(&mvotg->wq_lock); - } - - return count; -} - -static DEVICE_ATTR(a_clr_err, S_IWUSR, NULL, set_a_clr_err); - -static ssize_t -get_a_bus_drop(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct mv_otg *mvotg = dev_get_drvdata(dev); - return scnprintf(buf, PAGE_SIZE, "%d\n", - mvotg->otg_ctrl.a_bus_drop); -} - -static ssize_t -set_a_bus_drop(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct mv_otg *mvotg = dev_get_drvdata(dev); - if (!mvotg->phy.otg->default_a) - return -1; - - if (count > 2) - return -1; - - if (buf[0] == '0') { - mvotg->otg_ctrl.a_bus_drop = 0; - dev_dbg(&mvotg->pdev->dev, - "User request: a_bus_drop = 0\n"); - } else if (buf[0] == '1') { - mvotg->otg_ctrl.a_bus_drop = 1; - mvotg->otg_ctrl.a_bus_req = 0; - dev_dbg(&mvotg->pdev->dev, - "User request: a_bus_drop = 1\n"); - dev_dbg(&mvotg->pdev->dev, - "User request: and a_bus_req = 0\n"); - } - - if (spin_trylock(&mvotg->wq_lock)) { - mv_otg_run_state_machine(mvotg, 0); - spin_unlock(&mvotg->wq_lock); - } - - return count; -} - -static DEVICE_ATTR(a_bus_drop, S_IRUGO | S_IWUSR, - get_a_bus_drop, set_a_bus_drop); - -static struct attribute *inputs_attrs[] = { - &dev_attr_a_bus_req.attr, - &dev_attr_a_clr_err.attr, - &dev_attr_a_bus_drop.attr, - NULL, -}; - -static struct attribute_group inputs_attr_group = { - .name = "inputs", - .attrs = inputs_attrs, -}; - -int mv_otg_remove(struct platform_device *pdev) -{ - struct mv_otg *mvotg = platform_get_drvdata(pdev); - - sysfs_remove_group(&mvotg->pdev->dev.kobj, &inputs_attr_group); - - if (mvotg->qwork) { - flush_workqueue(mvotg->qwork); - destroy_workqueue(mvotg->qwork); - } - - mv_otg_disable(mvotg); - - usb_remove_phy(&mvotg->phy); - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static int mv_otg_probe(struct platform_device *pdev) -{ - struct mv_usb_platform_data *pdata = pdev->dev.platform_data; - struct mv_otg *mvotg; - struct usb_otg *otg; - struct resource *r; - int retval = 0, clk_i, i; - size_t size; - - if (pdata == NULL) { - dev_err(&pdev->dev, "failed to get platform data\n"); - return -ENODEV; - } - - size = sizeof(*mvotg) + sizeof(struct clk *) * pdata->clknum; - mvotg = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); - if (!mvotg) { - dev_err(&pdev->dev, "failed to allocate memory!\n"); - return -ENOMEM; - } - - otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL); - if (!otg) - return -ENOMEM; - - platform_set_drvdata(pdev, mvotg); - - mvotg->pdev = pdev; - mvotg->pdata = pdata; - - mvotg->clknum = pdata->clknum; - for (clk_i = 0; clk_i < mvotg->clknum; clk_i++) { - mvotg->clk[clk_i] = devm_clk_get(&pdev->dev, - pdata->clkname[clk_i]); - if (IS_ERR(mvotg->clk[clk_i])) { - retval = PTR_ERR(mvotg->clk[clk_i]); - return retval; - } - } - - mvotg->qwork = create_singlethread_workqueue("mv_otg_queue"); - if (!mvotg->qwork) { - dev_dbg(&pdev->dev, "cannot create workqueue for OTG\n"); - return -ENOMEM; - } - - INIT_DELAYED_WORK(&mvotg->work, mv_otg_work); - - /* OTG common part */ - mvotg->pdev = pdev; - mvotg->phy.dev = &pdev->dev; - mvotg->phy.otg = otg; - mvotg->phy.label = driver_name; - mvotg->phy.state = OTG_STATE_UNDEFINED; - - otg->phy = &mvotg->phy; - otg->set_host = mv_otg_set_host; - otg->set_peripheral = mv_otg_set_peripheral; - otg->set_vbus = mv_otg_set_vbus; - - for (i = 0; i < OTG_TIMER_NUM; i++) - init_timer(&mvotg->otg_ctrl.timer[i]); - - r = platform_get_resource_byname(mvotg->pdev, - IORESOURCE_MEM, "phyregs"); - if (r == NULL) { - dev_err(&pdev->dev, "no phy I/O memory resource defined\n"); - retval = -ENODEV; - goto err_destroy_workqueue; - } - - mvotg->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); - if (mvotg->phy_regs == NULL) { - dev_err(&pdev->dev, "failed to map phy I/O memory\n"); - retval = -EFAULT; - goto err_destroy_workqueue; - } - - r = platform_get_resource_byname(mvotg->pdev, - IORESOURCE_MEM, "capregs"); - if (r == NULL) { - dev_err(&pdev->dev, "no I/O memory resource defined\n"); - retval = -ENODEV; - goto err_destroy_workqueue; - } - - mvotg->cap_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); - if (mvotg->cap_regs == NULL) { - dev_err(&pdev->dev, "failed to map I/O memory\n"); - retval = -EFAULT; - goto err_destroy_workqueue; - } - - /* we will acces controller register, so enable the udc controller */ - retval = mv_otg_enable_internal(mvotg); - if (retval) { - dev_err(&pdev->dev, "mv otg enable error %d\n", retval); - goto err_destroy_workqueue; - } - - mvotg->op_regs = - (struct mv_otg_regs __iomem *) ((unsigned long) mvotg->cap_regs - + (readl(mvotg->cap_regs) & CAPLENGTH_MASK)); - - if (pdata->id) { - retval = devm_request_threaded_irq(&pdev->dev, pdata->id->irq, - NULL, mv_otg_inputs_irq, - IRQF_ONESHOT, "id", mvotg); - if (retval) { - dev_info(&pdev->dev, - "Failed to request irq for ID\n"); - pdata->id = NULL; - } - } - - if (pdata->vbus) { - mvotg->clock_gating = 1; - retval = devm_request_threaded_irq(&pdev->dev, pdata->vbus->irq, - NULL, mv_otg_inputs_irq, - IRQF_ONESHOT, "vbus", mvotg); - if (retval) { - dev_info(&pdev->dev, - "Failed to request irq for VBUS, " - "disable clock gating\n"); - mvotg->clock_gating = 0; - pdata->vbus = NULL; - } - } - - if (pdata->disable_otg_clock_gating) - mvotg->clock_gating = 0; - - mv_otg_reset(mvotg); - mv_otg_init_irq(mvotg); - - r = platform_get_resource(mvotg->pdev, IORESOURCE_IRQ, 0); - if (r == NULL) { - dev_err(&pdev->dev, "no IRQ resource defined\n"); - retval = -ENODEV; - goto err_disable_clk; - } - - mvotg->irq = r->start; - if (devm_request_irq(&pdev->dev, mvotg->irq, mv_otg_irq, IRQF_SHARED, - driver_name, mvotg)) { - dev_err(&pdev->dev, "Request irq %d for OTG failed\n", - mvotg->irq); - mvotg->irq = 0; - retval = -ENODEV; - goto err_disable_clk; - } - - retval = usb_add_phy(&mvotg->phy, USB_PHY_TYPE_USB2); - if (retval < 0) { - dev_err(&pdev->dev, "can't register transceiver, %d\n", - retval); - goto err_disable_clk; - } - - retval = sysfs_create_group(&pdev->dev.kobj, &inputs_attr_group); - if (retval < 0) { - dev_dbg(&pdev->dev, - "Can't register sysfs attr group: %d\n", retval); - goto err_remove_phy; - } - - spin_lock_init(&mvotg->wq_lock); - if (spin_trylock(&mvotg->wq_lock)) { - mv_otg_run_state_machine(mvotg, 2 * HZ); - spin_unlock(&mvotg->wq_lock); - } - - dev_info(&pdev->dev, - "successful probe OTG device %s clock gating.\n", - mvotg->clock_gating ? "with" : "without"); - - return 0; - -err_remove_phy: - usb_remove_phy(&mvotg->phy); -err_disable_clk: - mv_otg_disable_internal(mvotg); -err_destroy_workqueue: - flush_workqueue(mvotg->qwork); - destroy_workqueue(mvotg->qwork); - - platform_set_drvdata(pdev, NULL); - - return retval; -} - -#ifdef CONFIG_PM -static int mv_otg_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct mv_otg *mvotg = platform_get_drvdata(pdev); - - if (mvotg->phy.state != OTG_STATE_B_IDLE) { - dev_info(&pdev->dev, - "OTG state is not B_IDLE, it is %d!\n", - mvotg->phy.state); - return -EAGAIN; - } - - if (!mvotg->clock_gating) - mv_otg_disable_internal(mvotg); - - return 0; -} - -static int mv_otg_resume(struct platform_device *pdev) -{ - struct mv_otg *mvotg = platform_get_drvdata(pdev); - u32 otgsc; - - if (!mvotg->clock_gating) { - mv_otg_enable_internal(mvotg); - - otgsc = readl(&mvotg->op_regs->otgsc); - otgsc |= mvotg->irq_en; - writel(otgsc, &mvotg->op_regs->otgsc); - - if (spin_trylock(&mvotg->wq_lock)) { - mv_otg_run_state_machine(mvotg, 0); - spin_unlock(&mvotg->wq_lock); - } - } - return 0; -} -#endif - -static struct platform_driver mv_otg_driver = { - .probe = mv_otg_probe, - .remove = __exit_p(mv_otg_remove), - .driver = { - .owner = THIS_MODULE, - .name = driver_name, - }, -#ifdef CONFIG_PM - .suspend = mv_otg_suspend, - .resume = mv_otg_resume, -#endif -}; -module_platform_driver(mv_otg_driver); diff --git a/drivers/usb/otg/mv_otg.h b/drivers/usb/otg/mv_otg.h deleted file mode 100644 index 8a9e351b36b..00000000000 --- a/drivers/usb/otg/mv_otg.h +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Copyright (C) 2011 Marvell International Ltd. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#ifndef __MV_USB_OTG_CONTROLLER__ -#define __MV_USB_OTG_CONTROLLER__ - -#include <linux/types.h> - -/* Command Register Bit Masks */ -#define USBCMD_RUN_STOP (0x00000001) -#define USBCMD_CTRL_RESET (0x00000002) - -/* otgsc Register Bit Masks */ -#define OTGSC_CTRL_VUSB_DISCHARGE 0x00000001 -#define OTGSC_CTRL_VUSB_CHARGE 0x00000002 -#define OTGSC_CTRL_OTG_TERM 0x00000008 -#define OTGSC_CTRL_DATA_PULSING 0x00000010 -#define OTGSC_STS_USB_ID 0x00000100 -#define OTGSC_STS_A_VBUS_VALID 0x00000200 -#define OTGSC_STS_A_SESSION_VALID 0x00000400 -#define OTGSC_STS_B_SESSION_VALID 0x00000800 -#define OTGSC_STS_B_SESSION_END 0x00001000 -#define OTGSC_STS_1MS_TOGGLE 0x00002000 -#define OTGSC_STS_DATA_PULSING 0x00004000 -#define OTGSC_INTSTS_USB_ID 0x00010000 -#define OTGSC_INTSTS_A_VBUS_VALID 0x00020000 -#define OTGSC_INTSTS_A_SESSION_VALID 0x00040000 -#define OTGSC_INTSTS_B_SESSION_VALID 0x00080000 -#define OTGSC_INTSTS_B_SESSION_END 0x00100000 -#define OTGSC_INTSTS_1MS 0x00200000 -#define OTGSC_INTSTS_DATA_PULSING 0x00400000 -#define OTGSC_INTR_USB_ID 0x01000000 -#define OTGSC_INTR_A_VBUS_VALID 0x02000000 -#define OTGSC_INTR_A_SESSION_VALID 0x04000000 -#define OTGSC_INTR_B_SESSION_VALID 0x08000000 -#define OTGSC_INTR_B_SESSION_END 0x10000000 -#define OTGSC_INTR_1MS_TIMER 0x20000000 -#define OTGSC_INTR_DATA_PULSING 0x40000000 - -#define CAPLENGTH_MASK (0xff) - -/* Timer's interval, unit 10ms */ -#define T_A_WAIT_VRISE 100 -#define T_A_WAIT_BCON 2000 -#define T_A_AIDL_BDIS 100 -#define T_A_BIDL_ADIS 20 -#define T_B_ASE0_BRST 400 -#define T_B_SE0_SRP 300 -#define T_B_SRP_FAIL 2000 -#define T_B_DATA_PLS 10 -#define T_B_SRP_INIT 100 -#define T_A_SRP_RSPNS 10 -#define T_A_DRV_RSM 5 - -enum otg_function { - OTG_B_DEVICE = 0, - OTG_A_DEVICE -}; - -enum mv_otg_timer { - A_WAIT_BCON_TIMER = 0, - OTG_TIMER_NUM -}; - -/* PXA OTG state machine */ -struct mv_otg_ctrl { - /* internal variables */ - u8 a_set_b_hnp_en; /* A-Device set b_hnp_en */ - u8 b_srp_done; - u8 b_hnp_en; - - /* OTG inputs */ - u8 a_bus_drop; - u8 a_bus_req; - u8 a_clr_err; - u8 a_bus_resume; - u8 a_bus_suspend; - u8 a_conn; - u8 a_sess_vld; - u8 a_srp_det; - u8 a_vbus_vld; - u8 b_bus_req; /* B-Device Require Bus */ - u8 b_bus_resume; - u8 b_bus_suspend; - u8 b_conn; - u8 b_se0_srp; - u8 b_sess_end; - u8 b_sess_vld; - u8 id; - u8 a_suspend_req; - - /*Timer event */ - u8 a_aidl_bdis_timeout; - u8 b_ase0_brst_timeout; - u8 a_bidl_adis_timeout; - u8 a_wait_bcon_timeout; - - struct timer_list timer[OTG_TIMER_NUM]; -}; - -#define VUSBHS_MAX_PORTS 8 - -struct mv_otg_regs { - u32 usbcmd; /* Command register */ - u32 usbsts; /* Status register */ - u32 usbintr; /* Interrupt enable */ - u32 frindex; /* Frame index */ - u32 reserved1[1]; - u32 deviceaddr; /* Device Address */ - u32 eplistaddr; /* Endpoint List Address */ - u32 ttctrl; /* HOST TT status and control */ - u32 burstsize; /* Programmable Burst Size */ - u32 txfilltuning; /* Host Transmit Pre-Buffer Packet Tuning */ - u32 reserved[4]; - u32 epnak; /* Endpoint NAK */ - u32 epnaken; /* Endpoint NAK Enable */ - u32 configflag; /* Configured Flag register */ - u32 portsc[VUSBHS_MAX_PORTS]; /* Port Status/Control x, x = 1..8 */ - u32 otgsc; - u32 usbmode; /* USB Host/Device mode */ - u32 epsetupstat; /* Endpoint Setup Status */ - u32 epprime; /* Endpoint Initialize */ - u32 epflush; /* Endpoint De-initialize */ - u32 epstatus; /* Endpoint Status */ - u32 epcomplete; /* Endpoint Interrupt On Complete */ - u32 epctrlx[16]; /* Endpoint Control, where x = 0.. 15 */ - u32 mcr; /* Mux Control */ - u32 isr; /* Interrupt Status */ - u32 ier; /* Interrupt Enable */ -}; - -struct mv_otg { - struct usb_phy phy; - struct mv_otg_ctrl otg_ctrl; - - /* base address */ - void __iomem *phy_regs; - void __iomem *cap_regs; - struct mv_otg_regs __iomem *op_regs; - - struct platform_device *pdev; - int irq; - u32 irq_status; - u32 irq_en; - - struct delayed_work work; - struct workqueue_struct *qwork; - - spinlock_t wq_lock; - - struct mv_usb_platform_data *pdata; - - unsigned int active; - unsigned int clock_gating; - unsigned int clknum; - struct clk *clk[0]; -}; - -#endif diff --git a/drivers/usb/otg/mxs-phy.c b/drivers/usb/otg/mxs-phy.c deleted file mode 100644 index b0d9f119c74..00000000000 --- a/drivers/usb/otg/mxs-phy.c +++ /dev/null @@ -1,211 +0,0 @@ -/* - * Copyright 2012 Freescale Semiconductor, Inc. - * Copyright (C) 2012 Marek Vasut <marex@denx.de> - * on behalf of DENX Software Engineering GmbH - * - * The code contained herein is licensed under the GNU General Public - * License. You may obtain a copy of the GNU General Public License - * Version 2 or later at the following locations: - * - * http://www.opensource.org/licenses/gpl-license.html - * http://www.gnu.org/copyleft/gpl.html - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/usb/otg.h> -#include <linux/stmp_device.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/io.h> - -#define DRIVER_NAME "mxs_phy" - -#define HW_USBPHY_PWD 0x00 -#define HW_USBPHY_CTRL 0x30 -#define HW_USBPHY_CTRL_SET 0x34 -#define HW_USBPHY_CTRL_CLR 0x38 - -#define BM_USBPHY_CTRL_SFTRST BIT(31) -#define BM_USBPHY_CTRL_CLKGATE BIT(30) -#define BM_USBPHY_CTRL_ENUTMILEVEL3 BIT(15) -#define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14) -#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1) - -struct mxs_phy { - struct usb_phy phy; - struct clk *clk; -}; - -#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) - -static void mxs_phy_hw_init(struct mxs_phy *mxs_phy) -{ - void __iomem *base = mxs_phy->phy.io_priv; - - stmp_reset_block(base + HW_USBPHY_CTRL); - - /* Power up the PHY */ - writel_relaxed(0, base + HW_USBPHY_PWD); - - /* enable FS/LS device */ - writel_relaxed(BM_USBPHY_CTRL_ENUTMILEVEL2 | - BM_USBPHY_CTRL_ENUTMILEVEL3, - base + HW_USBPHY_CTRL_SET); -} - -static int mxs_phy_init(struct usb_phy *phy) -{ - struct mxs_phy *mxs_phy = to_mxs_phy(phy); - - clk_prepare_enable(mxs_phy->clk); - mxs_phy_hw_init(mxs_phy); - - return 0; -} - -static void mxs_phy_shutdown(struct usb_phy *phy) -{ - struct mxs_phy *mxs_phy = to_mxs_phy(phy); - - writel_relaxed(BM_USBPHY_CTRL_CLKGATE, - phy->io_priv + HW_USBPHY_CTRL_SET); - - clk_disable_unprepare(mxs_phy->clk); -} - -static int mxs_phy_suspend(struct usb_phy *x, int suspend) -{ - struct mxs_phy *mxs_phy = to_mxs_phy(x); - - if (suspend) { - writel_relaxed(0xffffffff, x->io_priv + HW_USBPHY_PWD); - writel_relaxed(BM_USBPHY_CTRL_CLKGATE, - x->io_priv + HW_USBPHY_CTRL_SET); - clk_disable_unprepare(mxs_phy->clk); - } else { - clk_prepare_enable(mxs_phy->clk); - writel_relaxed(BM_USBPHY_CTRL_CLKGATE, - x->io_priv + HW_USBPHY_CTRL_CLR); - writel_relaxed(0, x->io_priv + HW_USBPHY_PWD); - } - - return 0; -} - -static int mxs_phy_on_connect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - dev_dbg(phy->dev, "%s speed device has connected\n", - (speed == USB_SPEED_HIGH) ? "high" : "non-high"); - - if (speed == USB_SPEED_HIGH) - writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT, - phy->io_priv + HW_USBPHY_CTRL_SET); - - return 0; -} - -static int mxs_phy_on_disconnect(struct usb_phy *phy, - enum usb_device_speed speed) -{ - dev_dbg(phy->dev, "%s speed device has disconnected\n", - (speed == USB_SPEED_HIGH) ? "high" : "non-high"); - - if (speed == USB_SPEED_HIGH) - writel_relaxed(BM_USBPHY_CTRL_ENHOSTDISCONDETECT, - phy->io_priv + HW_USBPHY_CTRL_CLR); - - return 0; -} - -static int mxs_phy_probe(struct platform_device *pdev) -{ - struct resource *res; - void __iomem *base; - struct clk *clk; - struct mxs_phy *mxs_phy; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "can't get device resources\n"); - return -ENOENT; - } - - base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); - - clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(clk)) { - dev_err(&pdev->dev, - "can't get the clock, err=%ld", PTR_ERR(clk)); - return PTR_ERR(clk); - } - - mxs_phy = devm_kzalloc(&pdev->dev, sizeof(*mxs_phy), GFP_KERNEL); - if (!mxs_phy) { - dev_err(&pdev->dev, "Failed to allocate USB PHY structure!\n"); - return -ENOMEM; - } - - mxs_phy->phy.io_priv = base; - mxs_phy->phy.dev = &pdev->dev; - mxs_phy->phy.label = DRIVER_NAME; - mxs_phy->phy.init = mxs_phy_init; - mxs_phy->phy.shutdown = mxs_phy_shutdown; - mxs_phy->phy.set_suspend = mxs_phy_suspend; - mxs_phy->phy.notify_connect = mxs_phy_on_connect; - mxs_phy->phy.notify_disconnect = mxs_phy_on_disconnect; - - ATOMIC_INIT_NOTIFIER_HEAD(&mxs_phy->phy.notifier); - - mxs_phy->clk = clk; - - platform_set_drvdata(pdev, &mxs_phy->phy); - - return 0; -} - -static int mxs_phy_remove(struct platform_device *pdev) -{ - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static const struct of_device_id mxs_phy_dt_ids[] = { - { .compatible = "fsl,imx23-usbphy", }, - { /* sentinel */ } -}; -MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids); - -static struct platform_driver mxs_phy_driver = { - .probe = mxs_phy_probe, - .remove = mxs_phy_remove, - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - .of_match_table = mxs_phy_dt_ids, - }, -}; - -static int __init mxs_phy_module_init(void) -{ - return platform_driver_register(&mxs_phy_driver); -} -postcore_initcall(mxs_phy_module_init); - -static void __exit mxs_phy_module_exit(void) -{ - platform_driver_unregister(&mxs_phy_driver); -} -module_exit(mxs_phy_module_exit); - -MODULE_ALIAS("platform:mxs-usb-phy"); -MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); -MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); -MODULE_DESCRIPTION("Freescale MXS USB PHY driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c deleted file mode 100644 index a3ce24b94a7..00000000000 --- a/drivers/usb/otg/nop-usb-xceiv.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * drivers/usb/otg/nop-usb-xceiv.c - * - * NOP USB transceiver for all USB transceiver which are either built-in - * into USB IP or which are mostly autonomous. - * - * Copyright (C) 2009 Texas Instruments Inc - * Author: Ajay Kumar Gupta <ajay.gupta@ti.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Current status: - * This provides a "nop" transceiver for PHYs which are - * autonomous such as isp1504, isp1707, etc. - */ - -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/usb/otg.h> -#include <linux/usb/nop-usb-xceiv.h> -#include <linux/slab.h> - -struct nop_usb_xceiv { - struct usb_phy phy; - struct device *dev; -}; - -static struct platform_device *pd; - -void usb_nop_xceiv_register(void) -{ - if (pd) - return; - pd = platform_device_register_simple("nop_usb_xceiv", -1, NULL, 0); - if (!pd) { - printk(KERN_ERR "Unable to register usb nop transceiver\n"); - return; - } -} -EXPORT_SYMBOL(usb_nop_xceiv_register); - -void usb_nop_xceiv_unregister(void) -{ - platform_device_unregister(pd); - pd = NULL; -} -EXPORT_SYMBOL(usb_nop_xceiv_unregister); - -static int nop_set_suspend(struct usb_phy *x, int suspend) -{ - return 0; -} - -static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget) -{ - if (!otg) - return -ENODEV; - - if (!gadget) { - otg->gadget = NULL; - return -ENODEV; - } - - otg->gadget = gadget; - otg->phy->state = OTG_STATE_B_IDLE; - return 0; -} - -static int nop_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - if (!otg) - return -ENODEV; - - if (!host) { - otg->host = NULL; - return -ENODEV; - } - - otg->host = host; - return 0; -} - -static int nop_usb_xceiv_probe(struct platform_device *pdev) -{ - struct nop_usb_xceiv_platform_data *pdata = pdev->dev.platform_data; - struct nop_usb_xceiv *nop; - enum usb_phy_type type = USB_PHY_TYPE_USB2; - int err; - - nop = kzalloc(sizeof *nop, GFP_KERNEL); - if (!nop) - return -ENOMEM; - - nop->phy.otg = kzalloc(sizeof *nop->phy.otg, GFP_KERNEL); - if (!nop->phy.otg) { - kfree(nop); - return -ENOMEM; - } - - if (pdata) - type = pdata->type; - - nop->dev = &pdev->dev; - nop->phy.dev = nop->dev; - nop->phy.label = "nop-xceiv"; - nop->phy.set_suspend = nop_set_suspend; - nop->phy.state = OTG_STATE_UNDEFINED; - - nop->phy.otg->phy = &nop->phy; - nop->phy.otg->set_host = nop_set_host; - nop->phy.otg->set_peripheral = nop_set_peripheral; - - err = usb_add_phy(&nop->phy, type); - if (err) { - dev_err(&pdev->dev, "can't register transceiver, err: %d\n", - err); - goto exit; - } - - platform_set_drvdata(pdev, nop); - - ATOMIC_INIT_NOTIFIER_HEAD(&nop->phy.notifier); - - return 0; -exit: - kfree(nop->phy.otg); - kfree(nop); - return err; -} - -static int nop_usb_xceiv_remove(struct platform_device *pdev) -{ - struct nop_usb_xceiv *nop = platform_get_drvdata(pdev); - - usb_remove_phy(&nop->phy); - - platform_set_drvdata(pdev, NULL); - kfree(nop->phy.otg); - kfree(nop); - - return 0; -} - -static struct platform_driver nop_usb_xceiv_driver = { - .probe = nop_usb_xceiv_probe, - .remove = nop_usb_xceiv_remove, - .driver = { - .name = "nop_usb_xceiv", - .owner = THIS_MODULE, - }, -}; - -static int __init nop_usb_xceiv_init(void) -{ - return platform_driver_register(&nop_usb_xceiv_driver); -} -subsys_initcall(nop_usb_xceiv_init); - -static void __exit nop_usb_xceiv_exit(void) -{ - platform_driver_unregister(&nop_usb_xceiv_driver); -} -module_exit(nop_usb_xceiv_exit); - -MODULE_ALIAS("platform:nop_usb_xceiv"); -MODULE_AUTHOR("Texas Instruments Inc"); -MODULE_DESCRIPTION("NOP USB Transceiver driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c deleted file mode 100644 index 2bd03d261a5..00000000000 --- a/drivers/usb/otg/otg.c +++ /dev/null @@ -1,474 +0,0 @@ -/* - * otg.c -- USB OTG utility code - * - * Copyright (C) 2004 Texas Instruments - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/kernel.h> -#include <linux/export.h> -#include <linux/err.h> -#include <linux/device.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/of.h> - -#include <linux/usb/otg.h> - -static LIST_HEAD(phy_list); -static LIST_HEAD(phy_bind_list); -static DEFINE_SPINLOCK(phy_lock); - -static struct usb_phy *__usb_find_phy(struct list_head *list, - enum usb_phy_type type) -{ - struct usb_phy *phy = NULL; - - list_for_each_entry(phy, list, head) { - if (phy->type != type) - continue; - - return phy; - } - - return ERR_PTR(-ENODEV); -} - -static struct usb_phy *__usb_find_phy_dev(struct device *dev, - struct list_head *list, u8 index) -{ - struct usb_phy_bind *phy_bind = NULL; - - list_for_each_entry(phy_bind, list, list) { - if (!(strcmp(phy_bind->dev_name, dev_name(dev))) && - phy_bind->index == index) { - if (phy_bind->phy) - return phy_bind->phy; - else - return ERR_PTR(-EPROBE_DEFER); - } - } - - return ERR_PTR(-ENODEV); -} - -static struct usb_phy *__of_usb_find_phy(struct device_node *node) -{ - struct usb_phy *phy; - - list_for_each_entry(phy, &phy_list, head) { - if (node != phy->dev->of_node) - continue; - - return phy; - } - - return ERR_PTR(-ENODEV); -} - -static void devm_usb_phy_release(struct device *dev, void *res) -{ - struct usb_phy *phy = *(struct usb_phy **)res; - - usb_put_phy(phy); -} - -static int devm_usb_phy_match(struct device *dev, void *res, void *match_data) -{ - return res == match_data; -} - -/** - * devm_usb_get_phy - find the USB PHY - * @dev - device that requests this phy - * @type - the type of the phy the controller requires - * - * Gets the phy using usb_get_phy(), and associates a device with it using - * devres. On driver detach, release function is invoked on the devres data, - * then, devres data is freed. - * - * For use by USB host and peripheral drivers. - */ -struct usb_phy *devm_usb_get_phy(struct device *dev, enum usb_phy_type type) -{ - struct usb_phy **ptr, *phy; - - ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return NULL; - - phy = usb_get_phy(type); - if (!IS_ERR(phy)) { - *ptr = phy; - devres_add(dev, ptr); - } else - devres_free(ptr); - - return phy; -} -EXPORT_SYMBOL(devm_usb_get_phy); - -/** - * usb_get_phy - find the USB PHY - * @type - the type of the phy the controller requires - * - * Returns the phy driver, after getting a refcount to it; or - * -ENODEV if there is no such phy. The caller is responsible for - * calling usb_put_phy() to release that count. - * - * For use by USB host and peripheral drivers. - */ -struct usb_phy *usb_get_phy(enum usb_phy_type type) -{ - struct usb_phy *phy = NULL; - unsigned long flags; - - spin_lock_irqsave(&phy_lock, flags); - - phy = __usb_find_phy(&phy_list, type); - if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { - pr_err("unable to find transceiver of type %s\n", - usb_phy_type_string(type)); - goto err0; - } - - get_device(phy->dev); - -err0: - spin_unlock_irqrestore(&phy_lock, flags); - - return phy; -} -EXPORT_SYMBOL(usb_get_phy); - - /** - * devm_usb_get_phy_by_phandle - find the USB PHY by phandle - * @dev - device that requests this phy - * @phandle - name of the property holding the phy phandle value - * @index - the index of the phy - * - * Returns the phy driver associated with the given phandle value, - * after getting a refcount to it, -ENODEV if there is no such phy or - * -EPROBE_DEFER if there is a phandle to the phy, but the device is - * not yet loaded. While at that, it also associates the device with - * the phy using devres. On driver detach, release function is invoked - * on the devres data, then, devres data is freed. - * - * For use by USB host and peripheral drivers. - */ -struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev, - const char *phandle, u8 index) -{ - struct usb_phy *phy = ERR_PTR(-ENOMEM), **ptr; - unsigned long flags; - struct device_node *node; - - if (!dev->of_node) { - dev_dbg(dev, "device does not have a device node entry\n"); - return ERR_PTR(-EINVAL); - } - - node = of_parse_phandle(dev->of_node, phandle, index); - if (!node) { - dev_dbg(dev, "failed to get %s phandle in %s node\n", phandle, - dev->of_node->full_name); - return ERR_PTR(-ENODEV); - } - - ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) { - dev_dbg(dev, "failed to allocate memory for devres\n"); - goto err0; - } - - spin_lock_irqsave(&phy_lock, flags); - - phy = __of_usb_find_phy(node); - if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { - phy = ERR_PTR(-EPROBE_DEFER); - devres_free(ptr); - goto err1; - } - - *ptr = phy; - devres_add(dev, ptr); - - get_device(phy->dev); - -err1: - spin_unlock_irqrestore(&phy_lock, flags); - -err0: - of_node_put(node); - - return phy; -} -EXPORT_SYMBOL(devm_usb_get_phy_by_phandle); - -/** - * usb_get_phy_dev - find the USB PHY - * @dev - device that requests this phy - * @index - the index of the phy - * - * Returns the phy driver, after getting a refcount to it; or - * -ENODEV if there is no such phy. The caller is responsible for - * calling usb_put_phy() to release that count. - * - * For use by USB host and peripheral drivers. - */ -struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index) -{ - struct usb_phy *phy = NULL; - unsigned long flags; - - spin_lock_irqsave(&phy_lock, flags); - - phy = __usb_find_phy_dev(dev, &phy_bind_list, index); - if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { - pr_err("unable to find transceiver\n"); - goto err0; - } - - get_device(phy->dev); - -err0: - spin_unlock_irqrestore(&phy_lock, flags); - - return phy; -} -EXPORT_SYMBOL(usb_get_phy_dev); - -/** - * devm_usb_get_phy_dev - find the USB PHY using device ptr and index - * @dev - device that requests this phy - * @index - the index of the phy - * - * Gets the phy using usb_get_phy_dev(), and associates a device with it using - * devres. On driver detach, release function is invoked on the devres data, - * then, devres data is freed. - * - * For use by USB host and peripheral drivers. - */ -struct usb_phy *devm_usb_get_phy_dev(struct device *dev, u8 index) -{ - struct usb_phy **ptr, *phy; - - ptr = devres_alloc(devm_usb_phy_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return NULL; - - phy = usb_get_phy_dev(dev, index); - if (!IS_ERR(phy)) { - *ptr = phy; - devres_add(dev, ptr); - } else - devres_free(ptr); - - return phy; -} -EXPORT_SYMBOL(devm_usb_get_phy_dev); - -/** - * devm_usb_put_phy - release the USB PHY - * @dev - device that wants to release this phy - * @phy - the phy returned by devm_usb_get_phy() - * - * destroys the devres associated with this phy and invokes usb_put_phy - * to release the phy. - * - * For use by USB host and peripheral drivers. - */ -void devm_usb_put_phy(struct device *dev, struct usb_phy *phy) -{ - int r; - - r = devres_destroy(dev, devm_usb_phy_release, devm_usb_phy_match, phy); - dev_WARN_ONCE(dev, r, "couldn't find PHY resource\n"); -} -EXPORT_SYMBOL(devm_usb_put_phy); - -/** - * usb_put_phy - release the USB PHY - * @x: the phy returned by usb_get_phy() - * - * Releases a refcount the caller received from usb_get_phy(). - * - * For use by USB host and peripheral drivers. - */ -void usb_put_phy(struct usb_phy *x) -{ - if (x) { - struct module *owner = x->dev->driver->owner; - - put_device(x->dev); - module_put(owner); - } -} -EXPORT_SYMBOL(usb_put_phy); - -/** - * usb_add_phy - declare the USB PHY - * @x: the USB phy to be used; or NULL - * @type - the type of this PHY - * - * This call is exclusively for use by phy drivers, which - * coordinate the activities of drivers for host and peripheral - * controllers, and in some cases for VBUS current regulation. - */ -int usb_add_phy(struct usb_phy *x, enum usb_phy_type type) -{ - int ret = 0; - unsigned long flags; - struct usb_phy *phy; - - if (x->type != USB_PHY_TYPE_UNDEFINED) { - dev_err(x->dev, "not accepting initialized PHY %s\n", x->label); - return -EINVAL; - } - - spin_lock_irqsave(&phy_lock, flags); - - list_for_each_entry(phy, &phy_list, head) { - if (phy->type == type) { - ret = -EBUSY; - dev_err(x->dev, "transceiver type %s already exists\n", - usb_phy_type_string(type)); - goto out; - } - } - - x->type = type; - list_add_tail(&x->head, &phy_list); - -out: - spin_unlock_irqrestore(&phy_lock, flags); - return ret; -} -EXPORT_SYMBOL(usb_add_phy); - -/** - * usb_add_phy_dev - declare the USB PHY - * @x: the USB phy to be used; or NULL - * - * This call is exclusively for use by phy drivers, which - * coordinate the activities of drivers for host and peripheral - * controllers, and in some cases for VBUS current regulation. - */ -int usb_add_phy_dev(struct usb_phy *x) -{ - struct usb_phy_bind *phy_bind; - unsigned long flags; - - if (!x->dev) { - dev_err(x->dev, "no device provided for PHY\n"); - return -EINVAL; - } - - spin_lock_irqsave(&phy_lock, flags); - list_for_each_entry(phy_bind, &phy_bind_list, list) - if (!(strcmp(phy_bind->phy_dev_name, dev_name(x->dev)))) - phy_bind->phy = x; - - list_add_tail(&x->head, &phy_list); - - spin_unlock_irqrestore(&phy_lock, flags); - return 0; -} -EXPORT_SYMBOL(usb_add_phy_dev); - -/** - * usb_remove_phy - remove the OTG PHY - * @x: the USB OTG PHY to be removed; - * - * This reverts the effects of usb_add_phy - */ -void usb_remove_phy(struct usb_phy *x) -{ - unsigned long flags; - struct usb_phy_bind *phy_bind; - - spin_lock_irqsave(&phy_lock, flags); - if (x) { - list_for_each_entry(phy_bind, &phy_bind_list, list) - if (phy_bind->phy == x) - phy_bind->phy = NULL; - list_del(&x->head); - } - spin_unlock_irqrestore(&phy_lock, flags); -} -EXPORT_SYMBOL(usb_remove_phy); - -/** - * usb_bind_phy - bind the phy and the controller that uses the phy - * @dev_name: the device name of the device that will bind to the phy - * @index: index to specify the port number - * @phy_dev_name: the device name of the phy - * - * Fills the phy_bind structure with the dev_name and phy_dev_name. This will - * be used when the phy driver registers the phy and when the controller - * requests this phy. - * - * To be used by platform specific initialization code. - */ -int __init usb_bind_phy(const char *dev_name, u8 index, - const char *phy_dev_name) -{ - struct usb_phy_bind *phy_bind; - unsigned long flags; - - phy_bind = kzalloc(sizeof(*phy_bind), GFP_KERNEL); - if (!phy_bind) { - pr_err("phy_bind(): No memory for phy_bind"); - return -ENOMEM; - } - - phy_bind->dev_name = dev_name; - phy_bind->phy_dev_name = phy_dev_name; - phy_bind->index = index; - - spin_lock_irqsave(&phy_lock, flags); - list_add_tail(&phy_bind->list, &phy_bind_list); - spin_unlock_irqrestore(&phy_lock, flags); - - return 0; -} -EXPORT_SYMBOL_GPL(usb_bind_phy); - -const char *otg_state_string(enum usb_otg_state state) -{ - switch (state) { - case OTG_STATE_A_IDLE: - return "a_idle"; - case OTG_STATE_A_WAIT_VRISE: - return "a_wait_vrise"; - case OTG_STATE_A_WAIT_BCON: - return "a_wait_bcon"; - case OTG_STATE_A_HOST: - return "a_host"; - case OTG_STATE_A_SUSPEND: - return "a_suspend"; - case OTG_STATE_A_PERIPHERAL: - return "a_peripheral"; - case OTG_STATE_A_WAIT_VFALL: - return "a_wait_vfall"; - case OTG_STATE_A_VBUS_ERR: - return "a_vbus_err"; - case OTG_STATE_B_IDLE: - return "b_idle"; - case OTG_STATE_B_SRP_INIT: - return "b_srp_init"; - case OTG_STATE_B_PERIPHERAL: - return "b_peripheral"; - case OTG_STATE_B_WAIT_ACON: - return "b_wait_acon"; - case OTG_STATE_B_HOST: - return "b_host"; - default: - return "UNDEFINED"; - } -} -EXPORT_SYMBOL(otg_state_string); diff --git a/drivers/usb/otg/otg_fsm.c b/drivers/usb/otg/otg_fsm.c deleted file mode 100644 index ade131a8ae5..00000000000 --- a/drivers/usb/otg/otg_fsm.c +++ /dev/null @@ -1,348 +0,0 @@ -/* - * OTG Finite State Machine from OTG spec - * - * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. - * - * Author: Li Yang <LeoLi@freescale.com> - * Jerry Huang <Chang-Ming.Huang@freescale.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/spinlock.h> -#include <linux/delay.h> -#include <linux/usb.h> -#include <linux/usb/gadget.h> -#include <linux/usb/otg.h> - -#include "otg_fsm.h" - -/* Change USB protocol when there is a protocol change */ -static int otg_set_protocol(struct otg_fsm *fsm, int protocol) -{ - int ret = 0; - - if (fsm->protocol != protocol) { - VDBG("Changing role fsm->protocol= %d; new protocol= %d\n", - fsm->protocol, protocol); - /* stop old protocol */ - if (fsm->protocol == PROTO_HOST) - ret = fsm->ops->start_host(fsm, 0); - else if (fsm->protocol == PROTO_GADGET) - ret = fsm->ops->start_gadget(fsm, 0); - if (ret) - return ret; - - /* start new protocol */ - if (protocol == PROTO_HOST) - ret = fsm->ops->start_host(fsm, 1); - else if (protocol == PROTO_GADGET) - ret = fsm->ops->start_gadget(fsm, 1); - if (ret) - return ret; - - fsm->protocol = protocol; - return 0; - } - - return 0; -} - -static int state_changed; - -/* Called when leaving a state. Do state clean up jobs here */ -void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state) -{ - switch (old_state) { - case OTG_STATE_B_IDLE: - otg_del_timer(fsm, b_se0_srp_tmr); - fsm->b_se0_srp = 0; - break; - case OTG_STATE_B_SRP_INIT: - fsm->b_srp_done = 0; - break; - case OTG_STATE_B_PERIPHERAL: - break; - case OTG_STATE_B_WAIT_ACON: - otg_del_timer(fsm, b_ase0_brst_tmr); - fsm->b_ase0_brst_tmout = 0; - break; - case OTG_STATE_B_HOST: - break; - case OTG_STATE_A_IDLE: - break; - case OTG_STATE_A_WAIT_VRISE: - otg_del_timer(fsm, a_wait_vrise_tmr); - fsm->a_wait_vrise_tmout = 0; - break; - case OTG_STATE_A_WAIT_BCON: - otg_del_timer(fsm, a_wait_bcon_tmr); - fsm->a_wait_bcon_tmout = 0; - break; - case OTG_STATE_A_HOST: - otg_del_timer(fsm, a_wait_enum_tmr); - break; - case OTG_STATE_A_SUSPEND: - otg_del_timer(fsm, a_aidl_bdis_tmr); - fsm->a_aidl_bdis_tmout = 0; - fsm->a_suspend_req = 0; - break; - case OTG_STATE_A_PERIPHERAL: - break; - case OTG_STATE_A_WAIT_VFALL: - otg_del_timer(fsm, a_wait_vrise_tmr); - break; - case OTG_STATE_A_VBUS_ERR: - break; - default: - break; - } -} - -/* Called when entering a state */ -int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state) -{ - state_changed = 1; - if (fsm->otg->phy->state == new_state) - return 0; - VDBG("Set state: %s\n", otg_state_string(new_state)); - otg_leave_state(fsm, fsm->otg->phy->state); - switch (new_state) { - case OTG_STATE_B_IDLE: - otg_drv_vbus(fsm, 0); - otg_chrg_vbus(fsm, 0); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_UNDEF); - otg_add_timer(fsm, b_se0_srp_tmr); - break; - case OTG_STATE_B_SRP_INIT: - otg_start_pulse(fsm); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_UNDEF); - otg_add_timer(fsm, b_srp_fail_tmr); - break; - case OTG_STATE_B_PERIPHERAL: - otg_chrg_vbus(fsm, 0); - otg_loc_conn(fsm, 1); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_GADGET); - break; - case OTG_STATE_B_WAIT_ACON: - otg_chrg_vbus(fsm, 0); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_HOST); - otg_add_timer(fsm, b_ase0_brst_tmr); - fsm->a_bus_suspend = 0; - break; - case OTG_STATE_B_HOST: - otg_chrg_vbus(fsm, 0); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 1); - otg_set_protocol(fsm, PROTO_HOST); - usb_bus_start_enum(fsm->otg->host, - fsm->otg->host->otg_port); - break; - case OTG_STATE_A_IDLE: - otg_drv_vbus(fsm, 0); - otg_chrg_vbus(fsm, 0); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_HOST); - break; - case OTG_STATE_A_WAIT_VRISE: - otg_drv_vbus(fsm, 1); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_HOST); - otg_add_timer(fsm, a_wait_vrise_tmr); - break; - case OTG_STATE_A_WAIT_BCON: - otg_drv_vbus(fsm, 1); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_HOST); - otg_add_timer(fsm, a_wait_bcon_tmr); - break; - case OTG_STATE_A_HOST: - otg_drv_vbus(fsm, 1); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 1); - otg_set_protocol(fsm, PROTO_HOST); - /* - * When HNP is triggered while a_bus_req = 0, a_host will - * suspend too fast to complete a_set_b_hnp_en - */ - if (!fsm->a_bus_req || fsm->a_suspend_req) - otg_add_timer(fsm, a_wait_enum_tmr); - break; - case OTG_STATE_A_SUSPEND: - otg_drv_vbus(fsm, 1); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_HOST); - otg_add_timer(fsm, a_aidl_bdis_tmr); - - break; - case OTG_STATE_A_PERIPHERAL: - otg_loc_conn(fsm, 1); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_GADGET); - otg_drv_vbus(fsm, 1); - break; - case OTG_STATE_A_WAIT_VFALL: - otg_drv_vbus(fsm, 0); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_HOST); - break; - case OTG_STATE_A_VBUS_ERR: - otg_drv_vbus(fsm, 0); - otg_loc_conn(fsm, 0); - otg_loc_sof(fsm, 0); - otg_set_protocol(fsm, PROTO_UNDEF); - break; - default: - break; - } - - fsm->otg->phy->state = new_state; - return 0; -} - -/* State change judgement */ -int otg_statemachine(struct otg_fsm *fsm) -{ - enum usb_otg_state state; - unsigned long flags; - - spin_lock_irqsave(&fsm->lock, flags); - - state = fsm->otg->phy->state; - state_changed = 0; - /* State machine state change judgement */ - - switch (state) { - case OTG_STATE_UNDEFINED: - VDBG("fsm->id = %d\n", fsm->id); - if (fsm->id) - otg_set_state(fsm, OTG_STATE_B_IDLE); - else - otg_set_state(fsm, OTG_STATE_A_IDLE); - break; - case OTG_STATE_B_IDLE: - if (!fsm->id) - otg_set_state(fsm, OTG_STATE_A_IDLE); - else if (fsm->b_sess_vld && fsm->otg->gadget) - otg_set_state(fsm, OTG_STATE_B_PERIPHERAL); - else if (fsm->b_bus_req && fsm->b_sess_end && fsm->b_se0_srp) - otg_set_state(fsm, OTG_STATE_B_SRP_INIT); - break; - case OTG_STATE_B_SRP_INIT: - if (!fsm->id || fsm->b_srp_done) - otg_set_state(fsm, OTG_STATE_B_IDLE); - break; - case OTG_STATE_B_PERIPHERAL: - if (!fsm->id || !fsm->b_sess_vld) - otg_set_state(fsm, OTG_STATE_B_IDLE); - else if (fsm->b_bus_req && fsm->otg-> - gadget->b_hnp_enable && fsm->a_bus_suspend) - otg_set_state(fsm, OTG_STATE_B_WAIT_ACON); - break; - case OTG_STATE_B_WAIT_ACON: - if (fsm->a_conn) - otg_set_state(fsm, OTG_STATE_B_HOST); - else if (!fsm->id || !fsm->b_sess_vld) - otg_set_state(fsm, OTG_STATE_B_IDLE); - else if (fsm->a_bus_resume || fsm->b_ase0_brst_tmout) { - fsm->b_ase0_brst_tmout = 0; - otg_set_state(fsm, OTG_STATE_B_PERIPHERAL); - } - break; - case OTG_STATE_B_HOST: - if (!fsm->id || !fsm->b_sess_vld) - otg_set_state(fsm, OTG_STATE_B_IDLE); - else if (!fsm->b_bus_req || !fsm->a_conn) - otg_set_state(fsm, OTG_STATE_B_PERIPHERAL); - break; - case OTG_STATE_A_IDLE: - if (fsm->id) - otg_set_state(fsm, OTG_STATE_B_IDLE); - else if (!fsm->a_bus_drop && (fsm->a_bus_req || fsm->a_srp_det)) - otg_set_state(fsm, OTG_STATE_A_WAIT_VRISE); - break; - case OTG_STATE_A_WAIT_VRISE: - if (fsm->id || fsm->a_bus_drop || fsm->a_vbus_vld || - fsm->a_wait_vrise_tmout) { - otg_set_state(fsm, OTG_STATE_A_WAIT_BCON); - } - break; - case OTG_STATE_A_WAIT_BCON: - if (!fsm->a_vbus_vld) - otg_set_state(fsm, OTG_STATE_A_VBUS_ERR); - else if (fsm->b_conn) - otg_set_state(fsm, OTG_STATE_A_HOST); - else if (fsm->id | fsm->a_bus_drop | fsm->a_wait_bcon_tmout) - otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL); - break; - case OTG_STATE_A_HOST: - if ((!fsm->a_bus_req || fsm->a_suspend_req) && - fsm->otg->host->b_hnp_enable) - otg_set_state(fsm, OTG_STATE_A_SUSPEND); - else if (fsm->id || !fsm->b_conn || fsm->a_bus_drop) - otg_set_state(fsm, OTG_STATE_A_WAIT_BCON); - else if (!fsm->a_vbus_vld) - otg_set_state(fsm, OTG_STATE_A_VBUS_ERR); - break; - case OTG_STATE_A_SUSPEND: - if (!fsm->b_conn && fsm->otg->host->b_hnp_enable) - otg_set_state(fsm, OTG_STATE_A_PERIPHERAL); - else if (!fsm->b_conn && !fsm->otg->host->b_hnp_enable) - otg_set_state(fsm, OTG_STATE_A_WAIT_BCON); - else if (fsm->a_bus_req || fsm->b_bus_resume) - otg_set_state(fsm, OTG_STATE_A_HOST); - else if (fsm->id || fsm->a_bus_drop || fsm->a_aidl_bdis_tmout) - otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL); - else if (!fsm->a_vbus_vld) - otg_set_state(fsm, OTG_STATE_A_VBUS_ERR); - break; - case OTG_STATE_A_PERIPHERAL: - if (fsm->id || fsm->a_bus_drop) - otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL); - else if (fsm->b_bus_suspend) - otg_set_state(fsm, OTG_STATE_A_WAIT_BCON); - else if (!fsm->a_vbus_vld) - otg_set_state(fsm, OTG_STATE_A_VBUS_ERR); - break; - case OTG_STATE_A_WAIT_VFALL: - if (fsm->id || fsm->a_bus_req || (!fsm->a_sess_vld && - !fsm->b_conn)) - otg_set_state(fsm, OTG_STATE_A_IDLE); - break; - case OTG_STATE_A_VBUS_ERR: - if (fsm->id || fsm->a_bus_drop || fsm->a_clr_err) - otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL); - break; - default: - break; - } - spin_unlock_irqrestore(&fsm->lock, flags); - - VDBG("quit statemachine, changed = %d\n", state_changed); - return state_changed; -} diff --git a/drivers/usb/otg/otg_fsm.h b/drivers/usb/otg/otg_fsm.h deleted file mode 100644 index c30a2e1d9e4..00000000000 --- a/drivers/usb/otg/otg_fsm.h +++ /dev/null @@ -1,154 +0,0 @@ -/* Copyright (C) 2007,2008 Freescale Semiconductor, Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#undef DEBUG -#undef VERBOSE - -#ifdef DEBUG -#define DBG(fmt, args...) printk(KERN_DEBUG "[%s] " fmt , \ - __func__, ## args) -#else -#define DBG(fmt, args...) do {} while (0) -#endif - -#ifdef VERBOSE -#define VDBG DBG -#else -#define VDBG(stuff...) do {} while (0) -#endif - -#ifdef VERBOSE -#define MPC_LOC printk("Current Location [%s]:[%d]\n", __FILE__, __LINE__) -#else -#define MPC_LOC do {} while (0) -#endif - -#define PROTO_UNDEF (0) -#define PROTO_HOST (1) -#define PROTO_GADGET (2) - -/* OTG state machine according to the OTG spec */ -struct otg_fsm { - /* Input */ - int a_bus_resume; - int a_bus_suspend; - int a_conn; - int a_sess_vld; - int a_srp_det; - int a_vbus_vld; - int b_bus_resume; - int b_bus_suspend; - int b_conn; - int b_se0_srp; - int b_sess_end; - int b_sess_vld; - int id; - - /* Internal variables */ - int a_set_b_hnp_en; - int b_srp_done; - int b_hnp_enable; - - /* Timeout indicator for timers */ - int a_wait_vrise_tmout; - int a_wait_bcon_tmout; - int a_aidl_bdis_tmout; - int b_ase0_brst_tmout; - - /* Informative variables */ - int a_bus_drop; - int a_bus_req; - int a_clr_err; - int a_suspend_req; - int b_bus_req; - - /* Output */ - int drv_vbus; - int loc_conn; - int loc_sof; - - struct otg_fsm_ops *ops; - struct usb_otg *otg; - - /* Current usb protocol used: 0:undefine; 1:host; 2:client */ - int protocol; - spinlock_t lock; -}; - -struct otg_fsm_ops { - void (*chrg_vbus)(int on); - void (*drv_vbus)(int on); - void (*loc_conn)(int on); - void (*loc_sof)(int on); - void (*start_pulse)(void); - void (*add_timer)(void *timer); - void (*del_timer)(void *timer); - int (*start_host)(struct otg_fsm *fsm, int on); - int (*start_gadget)(struct otg_fsm *fsm, int on); -}; - - -static inline void otg_chrg_vbus(struct otg_fsm *fsm, int on) -{ - fsm->ops->chrg_vbus(on); -} - -static inline void otg_drv_vbus(struct otg_fsm *fsm, int on) -{ - if (fsm->drv_vbus != on) { - fsm->drv_vbus = on; - fsm->ops->drv_vbus(on); - } -} - -static inline void otg_loc_conn(struct otg_fsm *fsm, int on) -{ - if (fsm->loc_conn != on) { - fsm->loc_conn = on; - fsm->ops->loc_conn(on); - } -} - -static inline void otg_loc_sof(struct otg_fsm *fsm, int on) -{ - if (fsm->loc_sof != on) { - fsm->loc_sof = on; - fsm->ops->loc_sof(on); - } -} - -static inline void otg_start_pulse(struct otg_fsm *fsm) -{ - fsm->ops->start_pulse(); -} - -static inline void otg_add_timer(struct otg_fsm *fsm, void *timer) -{ - fsm->ops->add_timer(timer); -} - -static inline void otg_del_timer(struct otg_fsm *fsm, void *timer) -{ - fsm->ops->del_timer(timer); -} - -int otg_statemachine(struct otg_fsm *fsm); - -/* Defined by device specific driver, for different timer implementation */ -extern struct fsl_otg_timer *a_wait_vrise_tmr, *a_wait_bcon_tmr, - *a_aidl_bdis_tmr, *b_ase0_brst_tmr, *b_se0_srp_tmr, *b_srp_fail_tmr, - *a_wait_enum_tmr; diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c deleted file mode 100644 index a994715a310..00000000000 --- a/drivers/usb/otg/twl4030-usb.c +++ /dev/null @@ -1,728 +0,0 @@ -/* - * twl4030_usb - TWL4030 USB transceiver, talking to OMAP OTG controller - * - * Copyright (C) 2004-2007 Texas Instruments - * Copyright (C) 2008 Nokia Corporation - * Contact: Felipe Balbi <felipe.balbi@nokia.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Current status: - * - HS USB ULPI mode works. - * - 3-pin mode support may be added in future. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/spinlock.h> -#include <linux/workqueue.h> -#include <linux/io.h> -#include <linux/delay.h> -#include <linux/usb/otg.h> -#include <linux/usb/musb-omap.h> -#include <linux/usb/ulpi.h> -#include <linux/i2c/twl.h> -#include <linux/regulator/consumer.h> -#include <linux/err.h> -#include <linux/slab.h> - -/* Register defines */ - -#define MCPC_CTRL 0x30 -#define MCPC_CTRL_RTSOL (1 << 7) -#define MCPC_CTRL_EXTSWR (1 << 6) -#define MCPC_CTRL_EXTSWC (1 << 5) -#define MCPC_CTRL_VOICESW (1 << 4) -#define MCPC_CTRL_OUT64K (1 << 3) -#define MCPC_CTRL_RTSCTSSW (1 << 2) -#define MCPC_CTRL_HS_UART (1 << 0) - -#define MCPC_IO_CTRL 0x33 -#define MCPC_IO_CTRL_MICBIASEN (1 << 5) -#define MCPC_IO_CTRL_CTS_NPU (1 << 4) -#define MCPC_IO_CTRL_RXD_PU (1 << 3) -#define MCPC_IO_CTRL_TXDTYP (1 << 2) -#define MCPC_IO_CTRL_CTSTYP (1 << 1) -#define MCPC_IO_CTRL_RTSTYP (1 << 0) - -#define MCPC_CTRL2 0x36 -#define MCPC_CTRL2_MCPC_CK_EN (1 << 0) - -#define OTHER_FUNC_CTRL 0x80 -#define OTHER_FUNC_CTRL_BDIS_ACON_EN (1 << 4) -#define OTHER_FUNC_CTRL_FIVEWIRE_MODE (1 << 2) - -#define OTHER_IFC_CTRL 0x83 -#define OTHER_IFC_CTRL_OE_INT_EN (1 << 6) -#define OTHER_IFC_CTRL_CEA2011_MODE (1 << 5) -#define OTHER_IFC_CTRL_FSLSSERIALMODE_4PIN (1 << 4) -#define OTHER_IFC_CTRL_HIZ_ULPI_60MHZ_OUT (1 << 3) -#define OTHER_IFC_CTRL_HIZ_ULPI (1 << 2) -#define OTHER_IFC_CTRL_ALT_INT_REROUTE (1 << 0) - -#define OTHER_INT_EN_RISE 0x86 -#define OTHER_INT_EN_FALL 0x89 -#define OTHER_INT_STS 0x8C -#define OTHER_INT_LATCH 0x8D -#define OTHER_INT_VB_SESS_VLD (1 << 7) -#define OTHER_INT_DM_HI (1 << 6) /* not valid for "latch" reg */ -#define OTHER_INT_DP_HI (1 << 5) /* not valid for "latch" reg */ -#define OTHER_INT_BDIS_ACON (1 << 3) /* not valid for "fall" regs */ -#define OTHER_INT_MANU (1 << 1) -#define OTHER_INT_ABNORMAL_STRESS (1 << 0) - -#define ID_STATUS 0x96 -#define ID_RES_FLOAT (1 << 4) -#define ID_RES_440K (1 << 3) -#define ID_RES_200K (1 << 2) -#define ID_RES_102K (1 << 1) -#define ID_RES_GND (1 << 0) - -#define POWER_CTRL 0xAC -#define POWER_CTRL_OTG_ENAB (1 << 5) - -#define OTHER_IFC_CTRL2 0xAF -#define OTHER_IFC_CTRL2_ULPI_STP_LOW (1 << 4) -#define OTHER_IFC_CTRL2_ULPI_TXEN_POL (1 << 3) -#define OTHER_IFC_CTRL2_ULPI_4PIN_2430 (1 << 2) -#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_MASK (3 << 0) /* bits 0 and 1 */ -#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT1N (0 << 0) -#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT2N (1 << 0) - -#define REG_CTRL_EN 0xB2 -#define REG_CTRL_ERROR 0xB5 -#define ULPI_I2C_CONFLICT_INTEN (1 << 0) - -#define OTHER_FUNC_CTRL2 0xB8 -#define OTHER_FUNC_CTRL2_VBAT_TIMER_EN (1 << 0) - -/* following registers do not have separate _clr and _set registers */ -#define VBUS_DEBOUNCE 0xC0 -#define ID_DEBOUNCE 0xC1 -#define VBAT_TIMER 0xD3 -#define PHY_PWR_CTRL 0xFD -#define PHY_PWR_PHYPWD (1 << 0) -#define PHY_CLK_CTRL 0xFE -#define PHY_CLK_CTRL_CLOCKGATING_EN (1 << 2) -#define PHY_CLK_CTRL_CLK32K_EN (1 << 1) -#define REQ_PHY_DPLL_CLK (1 << 0) -#define PHY_CLK_CTRL_STS 0xFF -#define PHY_DPLL_CLK (1 << 0) - -/* In module TWL_MODULE_PM_MASTER */ -#define STS_HW_CONDITIONS 0x0F - -/* In module TWL_MODULE_PM_RECEIVER */ -#define VUSB_DEDICATED1 0x7D -#define VUSB_DEDICATED2 0x7E -#define VUSB1V5_DEV_GRP 0x71 -#define VUSB1V5_TYPE 0x72 -#define VUSB1V5_REMAP 0x73 -#define VUSB1V8_DEV_GRP 0x74 -#define VUSB1V8_TYPE 0x75 -#define VUSB1V8_REMAP 0x76 -#define VUSB3V1_DEV_GRP 0x77 -#define VUSB3V1_TYPE 0x78 -#define VUSB3V1_REMAP 0x79 - -/* In module TWL4030_MODULE_INTBR */ -#define PMBR1 0x0D -#define GPIO_USB_4PIN_ULPI_2430C (3 << 0) - -struct twl4030_usb { - struct usb_phy phy; - struct device *dev; - - /* TWL4030 internal USB regulator supplies */ - struct regulator *usb1v5; - struct regulator *usb1v8; - struct regulator *usb3v1; - - /* for vbus reporting with irqs disabled */ - spinlock_t lock; - - /* pin configuration */ - enum twl4030_usb_mode usb_mode; - - int irq; - enum omap_musb_vbus_id_status linkstat; - bool vbus_supplied; - u8 asleep; - bool irq_enabled; -}; - -/* internal define on top of container_of */ -#define phy_to_twl(x) container_of((x), struct twl4030_usb, phy) - -/*-------------------------------------------------------------------------*/ - -static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl, - u8 module, u8 data, u8 address) -{ - u8 check; - - if ((twl_i2c_write_u8(module, data, address) >= 0) && - (twl_i2c_read_u8(module, &check, address) >= 0) && - (check == data)) - return 0; - dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n", - 1, module, address, check, data); - - /* Failed once: Try again */ - if ((twl_i2c_write_u8(module, data, address) >= 0) && - (twl_i2c_read_u8(module, &check, address) >= 0) && - (check == data)) - return 0; - dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n", - 2, module, address, check, data); - - /* Failed again: Return error */ - return -EBUSY; -} - -#define twl4030_usb_write_verify(twl, address, data) \ - twl4030_i2c_write_u8_verify(twl, TWL_MODULE_USB, (data), (address)) - -static inline int twl4030_usb_write(struct twl4030_usb *twl, - u8 address, u8 data) -{ - int ret = 0; - - ret = twl_i2c_write_u8(TWL_MODULE_USB, data, address); - if (ret < 0) - dev_dbg(twl->dev, - "TWL4030:USB:Write[0x%x] Error %d\n", address, ret); - return ret; -} - -static inline int twl4030_readb(struct twl4030_usb *twl, u8 module, u8 address) -{ - u8 data; - int ret = 0; - - ret = twl_i2c_read_u8(module, &data, address); - if (ret >= 0) - ret = data; - else - dev_dbg(twl->dev, - "TWL4030:readb[0x%x,0x%x] Error %d\n", - module, address, ret); - - return ret; -} - -static inline int twl4030_usb_read(struct twl4030_usb *twl, u8 address) -{ - return twl4030_readb(twl, TWL_MODULE_USB, address); -} - -/*-------------------------------------------------------------------------*/ - -static inline int -twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits) -{ - return twl4030_usb_write(twl, ULPI_SET(reg), bits); -} - -static inline int -twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits) -{ - return twl4030_usb_write(twl, ULPI_CLR(reg), bits); -} - -/*-------------------------------------------------------------------------*/ - -static enum omap_musb_vbus_id_status - twl4030_usb_linkstat(struct twl4030_usb *twl) -{ - int status; - enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN; - - twl->vbus_supplied = false; - - /* - * For ID/VBUS sensing, see manual section 15.4.8 ... - * except when using only battery backup power, two - * comparators produce VBUS_PRES and ID_PRES signals, - * which don't match docs elsewhere. But ... BIT(7) - * and BIT(2) of STS_HW_CONDITIONS, respectively, do - * seem to match up. If either is true the USB_PRES - * signal is active, the OTG module is activated, and - * its interrupt may be raised (may wake the system). - */ - status = twl4030_readb(twl, TWL_MODULE_PM_MASTER, STS_HW_CONDITIONS); - if (status < 0) - dev_err(twl->dev, "USB link status err %d\n", status); - else if (status & (BIT(7) | BIT(2))) { - if (status & (BIT(7))) - twl->vbus_supplied = true; - - if (status & BIT(2)) - linkstat = OMAP_MUSB_ID_GROUND; - else - linkstat = OMAP_MUSB_VBUS_VALID; - } else { - if (twl->linkstat != OMAP_MUSB_UNKNOWN) - linkstat = OMAP_MUSB_VBUS_OFF; - } - - dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n", - status, status, linkstat); - - /* REVISIT this assumes host and peripheral controllers - * are registered, and that both are active... - */ - - spin_lock_irq(&twl->lock); - twl->linkstat = linkstat; - spin_unlock_irq(&twl->lock); - - return linkstat; -} - -static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode) -{ - twl->usb_mode = mode; - - switch (mode) { - case T2_USB_MODE_ULPI: - twl4030_usb_clear_bits(twl, ULPI_IFC_CTRL, - ULPI_IFC_CTRL_CARKITMODE); - twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - twl4030_usb_clear_bits(twl, ULPI_FUNC_CTRL, - ULPI_FUNC_CTRL_XCVRSEL_MASK | - ULPI_FUNC_CTRL_OPMODE_MASK); - break; - case -1: - /* FIXME: power on defaults */ - break; - default: - dev_err(twl->dev, "unsupported T2 transceiver mode %d\n", - mode); - break; - }; -} - -static void twl4030_i2c_access(struct twl4030_usb *twl, int on) -{ - unsigned long timeout; - int val = twl4030_usb_read(twl, PHY_CLK_CTRL); - - if (val >= 0) { - if (on) { - /* enable DPLL to access PHY registers over I2C */ - val |= REQ_PHY_DPLL_CLK; - WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL, - (u8)val) < 0); - - timeout = jiffies + HZ; - while (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) & - PHY_DPLL_CLK) - && time_before(jiffies, timeout)) - udelay(10); - if (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) & - PHY_DPLL_CLK)) - dev_err(twl->dev, "Timeout setting T2 HSUSB " - "PHY DPLL clock\n"); - } else { - /* let ULPI control the DPLL clock */ - val &= ~REQ_PHY_DPLL_CLK; - WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL, - (u8)val) < 0); - } - } -} - -static void __twl4030_phy_power(struct twl4030_usb *twl, int on) -{ - u8 pwr = twl4030_usb_read(twl, PHY_PWR_CTRL); - - if (on) - pwr &= ~PHY_PWR_PHYPWD; - else - pwr |= PHY_PWR_PHYPWD; - - WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0); -} - -static void twl4030_phy_power(struct twl4030_usb *twl, int on) -{ - if (on) { - regulator_enable(twl->usb3v1); - regulator_enable(twl->usb1v8); - /* - * Disabling usb3v1 regulator (= writing 0 to VUSB3V1_DEV_GRP - * in twl4030) resets the VUSB_DEDICATED2 register. This reset - * enables VUSB3V1_SLEEP bit that remaps usb3v1 ACTIVE state to - * SLEEP. We work around this by clearing the bit after usv3v1 - * is re-activated. This ensures that VUSB3V1 is really active. - */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2); - regulator_enable(twl->usb1v5); - __twl4030_phy_power(twl, 1); - twl4030_usb_write(twl, PHY_CLK_CTRL, - twl4030_usb_read(twl, PHY_CLK_CTRL) | - (PHY_CLK_CTRL_CLOCKGATING_EN | - PHY_CLK_CTRL_CLK32K_EN)); - } else { - __twl4030_phy_power(twl, 0); - regulator_disable(twl->usb1v5); - regulator_disable(twl->usb1v8); - regulator_disable(twl->usb3v1); - } -} - -static void twl4030_phy_suspend(struct twl4030_usb *twl, int controller_off) -{ - if (twl->asleep) - return; - - twl4030_phy_power(twl, 0); - twl->asleep = 1; - dev_dbg(twl->dev, "%s\n", __func__); -} - -static void __twl4030_phy_resume(struct twl4030_usb *twl) -{ - twl4030_phy_power(twl, 1); - twl4030_i2c_access(twl, 1); - twl4030_usb_set_mode(twl, twl->usb_mode); - if (twl->usb_mode == T2_USB_MODE_ULPI) - twl4030_i2c_access(twl, 0); -} - -static void twl4030_phy_resume(struct twl4030_usb *twl) -{ - if (!twl->asleep) - return; - __twl4030_phy_resume(twl); - twl->asleep = 0; - dev_dbg(twl->dev, "%s\n", __func__); -} - -static int twl4030_usb_ldo_init(struct twl4030_usb *twl) -{ - /* Enable writing to power configuration registers */ - twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, - TWL4030_PM_MASTER_PROTECT_KEY); - - twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, - TWL4030_PM_MASTER_PROTECT_KEY); - - /* Keep VUSB3V1 LDO in sleep state until VBUS/ID change detected*/ - /*twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);*/ - - /* input to VUSB3V1 LDO is from VBAT, not VBUS */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0x14, VUSB_DEDICATED1); - - /* Initialize 3.1V regulator */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_DEV_GRP); - - twl->usb3v1 = regulator_get(twl->dev, "usb3v1"); - if (IS_ERR(twl->usb3v1)) - return -ENODEV; - - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_TYPE); - - /* Initialize 1.5V regulator */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_DEV_GRP); - - twl->usb1v5 = regulator_get(twl->dev, "usb1v5"); - if (IS_ERR(twl->usb1v5)) - goto fail1; - - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_TYPE); - - /* Initialize 1.8V regulator */ - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_DEV_GRP); - - twl->usb1v8 = regulator_get(twl->dev, "usb1v8"); - if (IS_ERR(twl->usb1v8)) - goto fail2; - - twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE); - - /* disable access to power configuration registers */ - twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, - TWL4030_PM_MASTER_PROTECT_KEY); - - return 0; - -fail2: - regulator_put(twl->usb1v5); - twl->usb1v5 = NULL; -fail1: - regulator_put(twl->usb3v1); - twl->usb3v1 = NULL; - return -ENODEV; -} - -static ssize_t twl4030_usb_vbus_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct twl4030_usb *twl = dev_get_drvdata(dev); - unsigned long flags; - int ret = -EINVAL; - - spin_lock_irqsave(&twl->lock, flags); - ret = sprintf(buf, "%s\n", - twl->vbus_supplied ? "on" : "off"); - spin_unlock_irqrestore(&twl->lock, flags); - - return ret; -} -static DEVICE_ATTR(vbus, 0444, twl4030_usb_vbus_show, NULL); - -static irqreturn_t twl4030_usb_irq(int irq, void *_twl) -{ - struct twl4030_usb *twl = _twl; - enum omap_musb_vbus_id_status status; - - status = twl4030_usb_linkstat(twl); - if (status > 0) { - /* FIXME add a set_power() method so that B-devices can - * configure the charger appropriately. It's not always - * correct to consume VBUS power, and how much current to - * consume is a function of the USB configuration chosen - * by the host. - * - * REVISIT usb_gadget_vbus_connect(...) as needed, ditto - * its disconnect() sibling, when changing to/from the - * USB_LINK_VBUS state. musb_hdrc won't care until it - * starts to handle softconnect right. - */ - if (status == OMAP_MUSB_VBUS_OFF || - status == OMAP_MUSB_ID_FLOAT) - twl4030_phy_suspend(twl, 0); - else - twl4030_phy_resume(twl); - - omap_musb_mailbox(twl->linkstat); - } - sysfs_notify(&twl->dev->kobj, NULL, "vbus"); - - return IRQ_HANDLED; -} - -static void twl4030_usb_phy_init(struct twl4030_usb *twl) -{ - enum omap_musb_vbus_id_status status; - - status = twl4030_usb_linkstat(twl); - if (status > 0) { - if (status == OMAP_MUSB_VBUS_OFF || - status == OMAP_MUSB_ID_FLOAT) { - __twl4030_phy_power(twl, 0); - twl->asleep = 1; - } else { - __twl4030_phy_resume(twl); - twl->asleep = 0; - } - - omap_musb_mailbox(twl->linkstat); - } - sysfs_notify(&twl->dev->kobj, NULL, "vbus"); -} - -static int twl4030_set_suspend(struct usb_phy *x, int suspend) -{ - struct twl4030_usb *twl = phy_to_twl(x); - - if (suspend) - twl4030_phy_suspend(twl, 1); - else - twl4030_phy_resume(twl); - - return 0; -} - -static int twl4030_set_peripheral(struct usb_otg *otg, - struct usb_gadget *gadget) -{ - if (!otg) - return -ENODEV; - - otg->gadget = gadget; - if (!gadget) - otg->phy->state = OTG_STATE_UNDEFINED; - - return 0; -} - -static int twl4030_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - if (!otg) - return -ENODEV; - - otg->host = host; - if (!host) - otg->phy->state = OTG_STATE_UNDEFINED; - - return 0; -} - -static int twl4030_usb_probe(struct platform_device *pdev) -{ - struct twl4030_usb_data *pdata = pdev->dev.platform_data; - struct twl4030_usb *twl; - int status, err; - struct usb_otg *otg; - struct device_node *np = pdev->dev.of_node; - - twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL); - if (!twl) - return -ENOMEM; - - if (np) - of_property_read_u32(np, "usb_mode", - (enum twl4030_usb_mode *)&twl->usb_mode); - else if (pdata) - twl->usb_mode = pdata->usb_mode; - else { - dev_err(&pdev->dev, "twl4030 initialized without pdata\n"); - return -EINVAL; - } - - otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL); - if (!otg) - return -ENOMEM; - - twl->dev = &pdev->dev; - twl->irq = platform_get_irq(pdev, 0); - twl->vbus_supplied = false; - twl->asleep = 1; - twl->linkstat = OMAP_MUSB_UNKNOWN; - - twl->phy.dev = twl->dev; - twl->phy.label = "twl4030"; - twl->phy.otg = otg; - twl->phy.type = USB_PHY_TYPE_USB2; - twl->phy.set_suspend = twl4030_set_suspend; - - otg->phy = &twl->phy; - otg->set_host = twl4030_set_host; - otg->set_peripheral = twl4030_set_peripheral; - - /* init spinlock for workqueue */ - spin_lock_init(&twl->lock); - - err = twl4030_usb_ldo_init(twl); - if (err) { - dev_err(&pdev->dev, "ldo init failed\n"); - return err; - } - usb_add_phy_dev(&twl->phy); - - platform_set_drvdata(pdev, twl); - if (device_create_file(&pdev->dev, &dev_attr_vbus)) - dev_warn(&pdev->dev, "could not create sysfs file\n"); - - /* Our job is to use irqs and status from the power module - * to keep the transceiver disabled when nothing's connected. - * - * FIXME we actually shouldn't start enabling it until the - * USB controller drivers have said they're ready, by calling - * set_host() and/or set_peripheral() ... OTG_capable boards - * need both handles, otherwise just one suffices. - */ - twl->irq_enabled = true; - status = request_threaded_irq(twl->irq, NULL, twl4030_usb_irq, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | - IRQF_ONESHOT, "twl4030_usb", twl); - if (status < 0) { - dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n", - twl->irq, status); - return status; - } - - /* Power down phy or make it work according to - * current link state. - */ - twl4030_usb_phy_init(twl); - - dev_info(&pdev->dev, "Initialized TWL4030 USB module\n"); - return 0; -} - -static int __exit twl4030_usb_remove(struct platform_device *pdev) -{ - struct twl4030_usb *twl = platform_get_drvdata(pdev); - int val; - - free_irq(twl->irq, twl); - device_remove_file(twl->dev, &dev_attr_vbus); - - /* set transceiver mode to power on defaults */ - twl4030_usb_set_mode(twl, -1); - - /* autogate 60MHz ULPI clock, - * clear dpll clock request for i2c access, - * disable 32KHz - */ - val = twl4030_usb_read(twl, PHY_CLK_CTRL); - if (val >= 0) { - val |= PHY_CLK_CTRL_CLOCKGATING_EN; - val &= ~(PHY_CLK_CTRL_CLK32K_EN | REQ_PHY_DPLL_CLK); - twl4030_usb_write(twl, PHY_CLK_CTRL, (u8)val); - } - - /* disable complete OTG block */ - twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB); - - if (!twl->asleep) - twl4030_phy_power(twl, 0); - regulator_put(twl->usb1v5); - regulator_put(twl->usb1v8); - regulator_put(twl->usb3v1); - - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id twl4030_usb_id_table[] = { - { .compatible = "ti,twl4030-usb" }, - {} -}; -MODULE_DEVICE_TABLE(of, twl4030_usb_id_table); -#endif - -static struct platform_driver twl4030_usb_driver = { - .probe = twl4030_usb_probe, - .remove = __exit_p(twl4030_usb_remove), - .driver = { - .name = "twl4030_usb", - .owner = THIS_MODULE, - .of_match_table = of_match_ptr(twl4030_usb_id_table), - }, -}; - -static int __init twl4030_usb_init(void) -{ - return platform_driver_register(&twl4030_usb_driver); -} -subsys_initcall(twl4030_usb_init); - -static void __exit twl4030_usb_exit(void) -{ - platform_driver_unregister(&twl4030_usb_driver); -} -module_exit(twl4030_usb_exit); - -MODULE_ALIAS("platform:twl4030_usb"); -MODULE_AUTHOR("Texas Instruments, Inc, Nokia Corporation"); -MODULE_DESCRIPTION("TWL4030 USB transceiver driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/twl6030-usb.c b/drivers/usb/otg/twl6030-usb.c deleted file mode 100644 index 8cd6cf49bdb..00000000000 --- a/drivers/usb/otg/twl6030-usb.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - * twl6030_usb - TWL6030 USB transceiver, talking to OMAP OTG driver. - * - * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * Author: Hema HK <hemahk@ti.com> - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/usb/musb-omap.h> -#include <linux/usb/phy_companion.h> -#include <linux/usb/omap_usb.h> -#include <linux/i2c/twl.h> -#include <linux/regulator/consumer.h> -#include <linux/err.h> -#include <linux/slab.h> -#include <linux/delay.h> - -/* usb register definitions */ -#define USB_VENDOR_ID_LSB 0x00 -#define USB_VENDOR_ID_MSB 0x01 -#define USB_PRODUCT_ID_LSB 0x02 -#define USB_PRODUCT_ID_MSB 0x03 -#define USB_VBUS_CTRL_SET 0x04 -#define USB_VBUS_CTRL_CLR 0x05 -#define USB_ID_CTRL_SET 0x06 -#define USB_ID_CTRL_CLR 0x07 -#define USB_VBUS_INT_SRC 0x08 -#define USB_VBUS_INT_LATCH_SET 0x09 -#define USB_VBUS_INT_LATCH_CLR 0x0A -#define USB_VBUS_INT_EN_LO_SET 0x0B -#define USB_VBUS_INT_EN_LO_CLR 0x0C -#define USB_VBUS_INT_EN_HI_SET 0x0D -#define USB_VBUS_INT_EN_HI_CLR 0x0E -#define USB_ID_INT_SRC 0x0F -#define USB_ID_INT_LATCH_SET 0x10 -#define USB_ID_INT_LATCH_CLR 0x11 - -#define USB_ID_INT_EN_LO_SET 0x12 -#define USB_ID_INT_EN_LO_CLR 0x13 -#define USB_ID_INT_EN_HI_SET 0x14 -#define USB_ID_INT_EN_HI_CLR 0x15 -#define USB_OTG_ADP_CTRL 0x16 -#define USB_OTG_ADP_HIGH 0x17 -#define USB_OTG_ADP_LOW 0x18 -#define USB_OTG_ADP_RISE 0x19 -#define USB_OTG_REVISION 0x1A - -/* to be moved to LDO */ -#define TWL6030_MISC2 0xE5 -#define TWL6030_CFG_LDO_PD2 0xF5 -#define TWL6030_BACKUP_REG 0xFA - -#define STS_HW_CONDITIONS 0x21 - -/* In module TWL6030_MODULE_PM_MASTER */ -#define STS_HW_CONDITIONS 0x21 -#define STS_USB_ID BIT(2) - -/* In module TWL6030_MODULE_PM_RECEIVER */ -#define VUSB_CFG_TRANS 0x71 -#define VUSB_CFG_STATE 0x72 -#define VUSB_CFG_VOLTAGE 0x73 - -/* in module TWL6030_MODULE_MAIN_CHARGE */ - -#define CHARGERUSB_CTRL1 0x8 - -#define CONTROLLER_STAT1 0x03 -#define VBUS_DET BIT(2) - -struct twl6030_usb { - struct phy_companion comparator; - struct device *dev; - - /* for vbus reporting with irqs disabled */ - spinlock_t lock; - - struct regulator *usb3v3; - - /* used to set vbus, in atomic path */ - struct work_struct set_vbus_work; - - int irq1; - int irq2; - enum omap_musb_vbus_id_status linkstat; - u8 asleep; - bool irq_enabled; - bool vbus_enable; - const char *regulator; -}; - -#define comparator_to_twl(x) container_of((x), struct twl6030_usb, comparator) - -/*-------------------------------------------------------------------------*/ - -static inline int twl6030_writeb(struct twl6030_usb *twl, u8 module, - u8 data, u8 address) -{ - int ret = 0; - - ret = twl_i2c_write_u8(module, data, address); - if (ret < 0) - dev_err(twl->dev, - "Write[0x%x] Error %d\n", address, ret); - return ret; -} - -static inline u8 twl6030_readb(struct twl6030_usb *twl, u8 module, u8 address) -{ - u8 data, ret = 0; - - ret = twl_i2c_read_u8(module, &data, address); - if (ret >= 0) - ret = data; - else - dev_err(twl->dev, - "readb[0x%x,0x%x] Error %d\n", - module, address, ret); - return ret; -} - -static int twl6030_start_srp(struct phy_companion *comparator) -{ - struct twl6030_usb *twl = comparator_to_twl(comparator); - - twl6030_writeb(twl, TWL_MODULE_USB, 0x24, USB_VBUS_CTRL_SET); - twl6030_writeb(twl, TWL_MODULE_USB, 0x84, USB_VBUS_CTRL_SET); - - mdelay(100); - twl6030_writeb(twl, TWL_MODULE_USB, 0xa0, USB_VBUS_CTRL_CLR); - - return 0; -} - -static int twl6030_usb_ldo_init(struct twl6030_usb *twl) -{ - /* Set to OTG_REV 1.3 and turn on the ID_WAKEUP_COMP */ - twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_BACKUP_REG); - - /* Program CFG_LDO_PD2 register and set VUSB bit */ - twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x1, TWL6030_CFG_LDO_PD2); - - /* Program MISC2 register and set bit VUSB_IN_VBAT */ - twl6030_writeb(twl, TWL6030_MODULE_ID0 , 0x10, TWL6030_MISC2); - - twl->usb3v3 = regulator_get(twl->dev, twl->regulator); - if (IS_ERR(twl->usb3v3)) - return -ENODEV; - - /* Program the USB_VBUS_CTRL_SET and set VBUS_ACT_COMP bit */ - twl6030_writeb(twl, TWL_MODULE_USB, 0x4, USB_VBUS_CTRL_SET); - - /* - * Program the USB_ID_CTRL_SET register to enable GND drive - * and the ID comparators - */ - twl6030_writeb(twl, TWL_MODULE_USB, 0x14, USB_ID_CTRL_SET); - - return 0; -} - -static ssize_t twl6030_usb_vbus_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct twl6030_usb *twl = dev_get_drvdata(dev); - unsigned long flags; - int ret = -EINVAL; - - spin_lock_irqsave(&twl->lock, flags); - - switch (twl->linkstat) { - case OMAP_MUSB_VBUS_VALID: - ret = snprintf(buf, PAGE_SIZE, "vbus\n"); - break; - case OMAP_MUSB_ID_GROUND: - ret = snprintf(buf, PAGE_SIZE, "id\n"); - break; - case OMAP_MUSB_VBUS_OFF: - ret = snprintf(buf, PAGE_SIZE, "none\n"); - break; - default: - ret = snprintf(buf, PAGE_SIZE, "UNKNOWN\n"); - } - spin_unlock_irqrestore(&twl->lock, flags); - - return ret; -} -static DEVICE_ATTR(vbus, 0444, twl6030_usb_vbus_show, NULL); - -static irqreturn_t twl6030_usb_irq(int irq, void *_twl) -{ - struct twl6030_usb *twl = _twl; - enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; - u8 vbus_state, hw_state; - - hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); - - vbus_state = twl6030_readb(twl, TWL_MODULE_MAIN_CHARGE, - CONTROLLER_STAT1); - if (!(hw_state & STS_USB_ID)) { - if (vbus_state & VBUS_DET) { - regulator_enable(twl->usb3v3); - twl->asleep = 1; - status = OMAP_MUSB_VBUS_VALID; - twl->linkstat = status; - omap_musb_mailbox(status); - } else { - if (twl->linkstat != OMAP_MUSB_UNKNOWN) { - status = OMAP_MUSB_VBUS_OFF; - twl->linkstat = status; - omap_musb_mailbox(status); - if (twl->asleep) { - regulator_disable(twl->usb3v3); - twl->asleep = 0; - } - } - } - } - sysfs_notify(&twl->dev->kobj, NULL, "vbus"); - - return IRQ_HANDLED; -} - -static irqreturn_t twl6030_usbotg_irq(int irq, void *_twl) -{ - struct twl6030_usb *twl = _twl; - enum omap_musb_vbus_id_status status = OMAP_MUSB_UNKNOWN; - u8 hw_state; - - hw_state = twl6030_readb(twl, TWL6030_MODULE_ID0, STS_HW_CONDITIONS); - - if (hw_state & STS_USB_ID) { - - regulator_enable(twl->usb3v3); - twl->asleep = 1; - twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_CLR); - twl6030_writeb(twl, TWL_MODULE_USB, 0x10, USB_ID_INT_EN_HI_SET); - status = OMAP_MUSB_ID_GROUND; - twl->linkstat = status; - omap_musb_mailbox(status); - } else { - twl6030_writeb(twl, TWL_MODULE_USB, 0x10, USB_ID_INT_EN_HI_CLR); - twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_SET); - } - twl6030_writeb(twl, TWL_MODULE_USB, status, USB_ID_INT_LATCH_CLR); - - return IRQ_HANDLED; -} - -static int twl6030_enable_irq(struct twl6030_usb *twl) -{ - twl6030_writeb(twl, TWL_MODULE_USB, 0x1, USB_ID_INT_EN_HI_SET); - twl6030_interrupt_unmask(0x05, REG_INT_MSK_LINE_C); - twl6030_interrupt_unmask(0x05, REG_INT_MSK_STS_C); - - twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK, - REG_INT_MSK_LINE_C); - twl6030_interrupt_unmask(TWL6030_CHARGER_CTRL_INT_MASK, - REG_INT_MSK_STS_C); - twl6030_usb_irq(twl->irq2, twl); - twl6030_usbotg_irq(twl->irq1, twl); - - return 0; -} - -static void otg_set_vbus_work(struct work_struct *data) -{ - struct twl6030_usb *twl = container_of(data, struct twl6030_usb, - set_vbus_work); - - /* - * Start driving VBUS. Set OPA_MODE bit in CHARGERUSB_CTRL1 - * register. This enables boost mode. - */ - - if (twl->vbus_enable) - twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x40, - CHARGERUSB_CTRL1); - else - twl6030_writeb(twl, TWL_MODULE_MAIN_CHARGE , 0x00, - CHARGERUSB_CTRL1); -} - -static int twl6030_set_vbus(struct phy_companion *comparator, bool enabled) -{ - struct twl6030_usb *twl = comparator_to_twl(comparator); - - twl->vbus_enable = enabled; - schedule_work(&twl->set_vbus_work); - - return 0; -} - -static int twl6030_usb_probe(struct platform_device *pdev) -{ - u32 ret; - struct twl6030_usb *twl; - int status, err; - struct device_node *np = pdev->dev.of_node; - struct device *dev = &pdev->dev; - struct twl4030_usb_data *pdata = dev->platform_data; - - twl = devm_kzalloc(dev, sizeof *twl, GFP_KERNEL); - if (!twl) - return -ENOMEM; - - twl->dev = &pdev->dev; - twl->irq1 = platform_get_irq(pdev, 0); - twl->irq2 = platform_get_irq(pdev, 1); - twl->linkstat = OMAP_MUSB_UNKNOWN; - - twl->comparator.set_vbus = twl6030_set_vbus; - twl->comparator.start_srp = twl6030_start_srp; - - ret = omap_usb2_set_comparator(&twl->comparator); - if (ret == -ENODEV) { - dev_info(&pdev->dev, "phy not ready, deferring probe"); - return -EPROBE_DEFER; - } - - if (np) { - twl->regulator = "usb"; - } else if (pdata) { - if (pdata->features & TWL6025_SUBCLASS) - twl->regulator = "ldousb"; - else - twl->regulator = "vusb"; - } else { - dev_err(&pdev->dev, "twl6030 initialized without pdata\n"); - return -EINVAL; - } - - /* init spinlock for workqueue */ - spin_lock_init(&twl->lock); - - err = twl6030_usb_ldo_init(twl); - if (err) { - dev_err(&pdev->dev, "ldo init failed\n"); - return err; - } - - platform_set_drvdata(pdev, twl); - if (device_create_file(&pdev->dev, &dev_attr_vbus)) - dev_warn(&pdev->dev, "could not create sysfs file\n"); - - INIT_WORK(&twl->set_vbus_work, otg_set_vbus_work); - - twl->irq_enabled = true; - status = request_threaded_irq(twl->irq1, NULL, twl6030_usbotg_irq, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, - "twl6030_usb", twl); - if (status < 0) { - dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", - twl->irq1, status); - device_remove_file(twl->dev, &dev_attr_vbus); - return status; - } - - status = request_threaded_irq(twl->irq2, NULL, twl6030_usb_irq, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT, - "twl6030_usb", twl); - if (status < 0) { - dev_err(&pdev->dev, "can't get IRQ %d, err %d\n", - twl->irq2, status); - free_irq(twl->irq1, twl); - device_remove_file(twl->dev, &dev_attr_vbus); - return status; - } - - twl->asleep = 0; - twl6030_enable_irq(twl); - dev_info(&pdev->dev, "Initialized TWL6030 USB module\n"); - - return 0; -} - -static int __exit twl6030_usb_remove(struct platform_device *pdev) -{ - struct twl6030_usb *twl = platform_get_drvdata(pdev); - - twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, - REG_INT_MSK_LINE_C); - twl6030_interrupt_mask(TWL6030_USBOTG_INT_MASK, - REG_INT_MSK_STS_C); - free_irq(twl->irq1, twl); - free_irq(twl->irq2, twl); - regulator_put(twl->usb3v3); - device_remove_file(twl->dev, &dev_attr_vbus); - cancel_work_sync(&twl->set_vbus_work); - - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id twl6030_usb_id_table[] = { - { .compatible = "ti,twl6030-usb" }, - {} -}; -MODULE_DEVICE_TABLE(of, twl6030_usb_id_table); -#endif - -static struct platform_driver twl6030_usb_driver = { - .probe = twl6030_usb_probe, - .remove = __exit_p(twl6030_usb_remove), - .driver = { - .name = "twl6030_usb", - .owner = THIS_MODULE, - .of_match_table = of_match_ptr(twl6030_usb_id_table), - }, -}; - -static int __init twl6030_usb_init(void) -{ - return platform_driver_register(&twl6030_usb_driver); -} -subsys_initcall(twl6030_usb_init); - -static void __exit twl6030_usb_exit(void) -{ - platform_driver_unregister(&twl6030_usb_driver); -} -module_exit(twl6030_usb_exit); - -MODULE_ALIAS("platform:twl6030_usb"); -MODULE_AUTHOR("Hema HK <hemahk@ti.com>"); -MODULE_DESCRIPTION("TWL6030 USB transceiver driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c deleted file mode 100644 index 217339dd7a9..00000000000 --- a/drivers/usb/otg/ulpi.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - * Generic ULPI USB transceiver support - * - * Copyright (C) 2009 Daniel Mack <daniel@caiaq.de> - * - * Based on sources from - * - * Sascha Hauer <s.hauer@pengutronix.de> - * Freescale Semiconductors - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/export.h> -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/usb/ulpi.h> - - -struct ulpi_info { - unsigned int id; - char *name; -}; - -#define ULPI_ID(vendor, product) (((vendor) << 16) | (product)) -#define ULPI_INFO(_id, _name) \ - { \ - .id = (_id), \ - .name = (_name), \ - } - -/* ULPI hardcoded IDs, used for probing */ -static struct ulpi_info ulpi_ids[] = { - ULPI_INFO(ULPI_ID(0x04cc, 0x1504), "NXP ISP1504"), - ULPI_INFO(ULPI_ID(0x0424, 0x0006), "SMSC USB331x"), -}; - -static int ulpi_set_otg_flags(struct usb_phy *phy) -{ - unsigned int flags = ULPI_OTG_CTRL_DP_PULLDOWN | - ULPI_OTG_CTRL_DM_PULLDOWN; - - if (phy->flags & ULPI_OTG_ID_PULLUP) - flags |= ULPI_OTG_CTRL_ID_PULLUP; - - /* - * ULPI Specification rev.1.1 default - * for Dp/DmPulldown is enabled. - */ - if (phy->flags & ULPI_OTG_DP_PULLDOWN_DIS) - flags &= ~ULPI_OTG_CTRL_DP_PULLDOWN; - - if (phy->flags & ULPI_OTG_DM_PULLDOWN_DIS) - flags &= ~ULPI_OTG_CTRL_DM_PULLDOWN; - - if (phy->flags & ULPI_OTG_EXTVBUSIND) - flags |= ULPI_OTG_CTRL_EXTVBUSIND; - - return usb_phy_io_write(phy, flags, ULPI_OTG_CTRL); -} - -static int ulpi_set_fc_flags(struct usb_phy *phy) -{ - unsigned int flags = 0; - - /* - * ULPI Specification rev.1.1 default - * for XcvrSelect is Full Speed. - */ - if (phy->flags & ULPI_FC_HS) - flags |= ULPI_FUNC_CTRL_HIGH_SPEED; - else if (phy->flags & ULPI_FC_LS) - flags |= ULPI_FUNC_CTRL_LOW_SPEED; - else if (phy->flags & ULPI_FC_FS4LS) - flags |= ULPI_FUNC_CTRL_FS4LS; - else - flags |= ULPI_FUNC_CTRL_FULL_SPEED; - - if (phy->flags & ULPI_FC_TERMSEL) - flags |= ULPI_FUNC_CTRL_TERMSELECT; - - /* - * ULPI Specification rev.1.1 default - * for OpMode is Normal Operation. - */ - if (phy->flags & ULPI_FC_OP_NODRV) - flags |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; - else if (phy->flags & ULPI_FC_OP_DIS_NRZI) - flags |= ULPI_FUNC_CTRL_OPMODE_DISABLE_NRZI; - else if (phy->flags & ULPI_FC_OP_NSYNC_NEOP) - flags |= ULPI_FUNC_CTRL_OPMODE_NOSYNC_NOEOP; - else - flags |= ULPI_FUNC_CTRL_OPMODE_NORMAL; - - /* - * ULPI Specification rev.1.1 default - * for SuspendM is Powered. - */ - flags |= ULPI_FUNC_CTRL_SUSPENDM; - - return usb_phy_io_write(phy, flags, ULPI_FUNC_CTRL); -} - -static int ulpi_set_ic_flags(struct usb_phy *phy) -{ - unsigned int flags = 0; - - if (phy->flags & ULPI_IC_AUTORESUME) - flags |= ULPI_IFC_CTRL_AUTORESUME; - - if (phy->flags & ULPI_IC_EXTVBUS_INDINV) - flags |= ULPI_IFC_CTRL_EXTERNAL_VBUS; - - if (phy->flags & ULPI_IC_IND_PASSTHRU) - flags |= ULPI_IFC_CTRL_PASSTHRU; - - if (phy->flags & ULPI_IC_PROTECT_DIS) - flags |= ULPI_IFC_CTRL_PROTECT_IFC_DISABLE; - - return usb_phy_io_write(phy, flags, ULPI_IFC_CTRL); -} - -static int ulpi_set_flags(struct usb_phy *phy) -{ - int ret; - - ret = ulpi_set_otg_flags(phy); - if (ret) - return ret; - - ret = ulpi_set_ic_flags(phy); - if (ret) - return ret; - - return ulpi_set_fc_flags(phy); -} - -static int ulpi_check_integrity(struct usb_phy *phy) -{ - int ret, i; - unsigned int val = 0x55; - - for (i = 0; i < 2; i++) { - ret = usb_phy_io_write(phy, val, ULPI_SCRATCH); - if (ret < 0) - return ret; - - ret = usb_phy_io_read(phy, ULPI_SCRATCH); - if (ret < 0) - return ret; - - if (ret != val) { - pr_err("ULPI integrity check: failed!"); - return -ENODEV; - } - val = val << 1; - } - - pr_info("ULPI integrity check: passed.\n"); - - return 0; -} - -static int ulpi_init(struct usb_phy *phy) -{ - int i, vid, pid, ret; - u32 ulpi_id = 0; - - for (i = 0; i < 4; i++) { - ret = usb_phy_io_read(phy, ULPI_PRODUCT_ID_HIGH - i); - if (ret < 0) - return ret; - ulpi_id = (ulpi_id << 8) | ret; - } - vid = ulpi_id & 0xffff; - pid = ulpi_id >> 16; - - pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid); - - for (i = 0; i < ARRAY_SIZE(ulpi_ids); i++) { - if (ulpi_ids[i].id == ULPI_ID(vid, pid)) { - pr_info("Found %s ULPI transceiver.\n", - ulpi_ids[i].name); - break; - } - } - - ret = ulpi_check_integrity(phy); - if (ret) - return ret; - - return ulpi_set_flags(phy); -} - -static int ulpi_set_host(struct usb_otg *otg, struct usb_bus *host) -{ - struct usb_phy *phy = otg->phy; - unsigned int flags = usb_phy_io_read(phy, ULPI_IFC_CTRL); - - if (!host) { - otg->host = NULL; - return 0; - } - - otg->host = host; - - flags &= ~(ULPI_IFC_CTRL_6_PIN_SERIAL_MODE | - ULPI_IFC_CTRL_3_PIN_SERIAL_MODE | - ULPI_IFC_CTRL_CARKITMODE); - - if (phy->flags & ULPI_IC_6PIN_SERIAL) - flags |= ULPI_IFC_CTRL_6_PIN_SERIAL_MODE; - else if (phy->flags & ULPI_IC_3PIN_SERIAL) - flags |= ULPI_IFC_CTRL_3_PIN_SERIAL_MODE; - else if (phy->flags & ULPI_IC_CARKIT) - flags |= ULPI_IFC_CTRL_CARKITMODE; - - return usb_phy_io_write(phy, flags, ULPI_IFC_CTRL); -} - -static int ulpi_set_vbus(struct usb_otg *otg, bool on) -{ - struct usb_phy *phy = otg->phy; - unsigned int flags = usb_phy_io_read(phy, ULPI_OTG_CTRL); - - flags &= ~(ULPI_OTG_CTRL_DRVVBUS | ULPI_OTG_CTRL_DRVVBUS_EXT); - - if (on) { - if (phy->flags & ULPI_OTG_DRVVBUS) - flags |= ULPI_OTG_CTRL_DRVVBUS; - - if (phy->flags & ULPI_OTG_DRVVBUS_EXT) - flags |= ULPI_OTG_CTRL_DRVVBUS_EXT; - } - - return usb_phy_io_write(phy, flags, ULPI_OTG_CTRL); -} - -struct usb_phy * -otg_ulpi_create(struct usb_phy_io_ops *ops, - unsigned int flags) -{ - struct usb_phy *phy; - struct usb_otg *otg; - - phy = kzalloc(sizeof(*phy), GFP_KERNEL); - if (!phy) - return NULL; - - otg = kzalloc(sizeof(*otg), GFP_KERNEL); - if (!otg) { - kfree(phy); - return NULL; - } - - phy->label = "ULPI"; - phy->flags = flags; - phy->io_ops = ops; - phy->otg = otg; - phy->init = ulpi_init; - - otg->phy = phy; - otg->set_host = ulpi_set_host; - otg->set_vbus = ulpi_set_vbus; - - return phy; -} -EXPORT_SYMBOL_GPL(otg_ulpi_create); - diff --git a/drivers/usb/otg/ulpi_viewport.c b/drivers/usb/otg/ulpi_viewport.c deleted file mode 100644 index c5ba7e5423f..00000000000 --- a/drivers/usb/otg/ulpi_viewport.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright (C) 2011 Google, Inc. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <linux/kernel.h> -#include <linux/usb.h> -#include <linux/io.h> -#include <linux/usb/otg.h> -#include <linux/usb/ulpi.h> - -#define ULPI_VIEW_WAKEUP (1 << 31) -#define ULPI_VIEW_RUN (1 << 30) -#define ULPI_VIEW_WRITE (1 << 29) -#define ULPI_VIEW_READ (0 << 29) -#define ULPI_VIEW_ADDR(x) (((x) & 0xff) << 16) -#define ULPI_VIEW_DATA_READ(x) (((x) >> 8) & 0xff) -#define ULPI_VIEW_DATA_WRITE(x) ((x) & 0xff) - -static int ulpi_viewport_wait(void __iomem *view, u32 mask) -{ - unsigned long usec = 2000; - - while (usec--) { - if (!(readl(view) & mask)) - return 0; - - udelay(1); - }; - - return -ETIMEDOUT; -} - -static int ulpi_viewport_read(struct usb_phy *otg, u32 reg) -{ - int ret; - void __iomem *view = otg->io_priv; - - writel(ULPI_VIEW_WAKEUP | ULPI_VIEW_WRITE, view); - ret = ulpi_viewport_wait(view, ULPI_VIEW_WAKEUP); - if (ret) - return ret; - - writel(ULPI_VIEW_RUN | ULPI_VIEW_READ | ULPI_VIEW_ADDR(reg), view); - ret = ulpi_viewport_wait(view, ULPI_VIEW_RUN); - if (ret) - return ret; - - return ULPI_VIEW_DATA_READ(readl(view)); -} - -static int ulpi_viewport_write(struct usb_phy *otg, u32 val, u32 reg) -{ - int ret; - void __iomem *view = otg->io_priv; - - writel(ULPI_VIEW_WAKEUP | ULPI_VIEW_WRITE, view); - ret = ulpi_viewport_wait(view, ULPI_VIEW_WAKEUP); - if (ret) - return ret; - - writel(ULPI_VIEW_RUN | ULPI_VIEW_WRITE | ULPI_VIEW_DATA_WRITE(val) | - ULPI_VIEW_ADDR(reg), view); - - return ulpi_viewport_wait(view, ULPI_VIEW_RUN); -} - -struct usb_phy_io_ops ulpi_viewport_access_ops = { - .read = ulpi_viewport_read, - .write = ulpi_viewport_write, -}; |