diff options
Diffstat (limited to 'arch/arm/mach-omap2/usb-ehci.c')
| -rw-r--r-- | arch/arm/mach-omap2/usb-ehci.c | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/usb-ehci.c b/arch/arm/mach-omap2/usb-ehci.c new file mode 100644 index 000000000000..f1df873d59db --- /dev/null +++ b/arch/arm/mach-omap2/usb-ehci.c @@ -0,0 +1,238 @@ +/* + * linux/arch/arm/mach-omap2/usb-ehci.c + * + * This file will contain the board specific details for the + * Synopsys EHCI host controller on OMAP3430 + * + * Copyright (C) 2007 Texas Instruments + * Author: Vikram Pandita <vikram.pandita@ti.com> + * + * Generalization by: + * 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 version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <asm/io.h> +#include <plat/mux.h> + +#include <mach/hardware.h> +#include <mach/irqs.h> +#include <plat/usb.h> + +#include "mux.h" + +#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE) + +static struct resource ehci_resources[] = { + { + .start = OMAP34XX_EHCI_BASE, + .end = OMAP34XX_EHCI_BASE + SZ_1K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = OMAP34XX_UHH_CONFIG_BASE, + .end = OMAP34XX_UHH_CONFIG_BASE + SZ_1K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = OMAP34XX_USBTLL_BASE, + .end = OMAP34XX_USBTLL_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + { /* general IRQ */ + .start = INT_34XX_EHCI_IRQ, + .flags = IORESOURCE_IRQ, + } +}; + +static u64 ehci_dmamask = ~(u32)0; +static struct platform_device ehci_device = { + .name = "ehci-omap", + .id = 0, + .dev = { + .dma_mask = &ehci_dmamask, + .coherent_dma_mask = 0xffffffff, + .platform_data = NULL, + }, + .num_resources = ARRAY_SIZE(ehci_resources), + .resource = ehci_resources, +}; + +/* MUX settings for EHCI pins */ +/* + * setup_ehci_io_mux - initialize IO pad mux for USBHOST + */ +static void setup_ehci_io_mux(enum ehci_hcd_omap_mode *port_mode) +{ + switch (port_mode[0]) { + case EHCI_HCD_OMAP_MODE_PHY: + omap_mux_init_signal("hsusb1_stp", OMAP_PIN_OUTPUT); + omap_mux_init_signal("hsusb1_clk", OMAP_PIN_OUTPUT); + omap_mux_init_signal("hsusb1_dir", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_nxt", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data0", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data1", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data2", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data3", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data4", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data5", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data6", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_data7", OMAP_PIN_INPUT_PULLDOWN); + break; + case EHCI_HCD_OMAP_MODE_TLL: + omap_mux_init_signal("hsusb1_tll_stp", + OMAP_PIN_INPUT_PULLUP); + omap_mux_init_signal("hsusb1_tll_clk", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_dir", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_nxt", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data0", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data1", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data2", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data3", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data4", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data5", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data6", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb1_tll_data7", + OMAP_PIN_INPUT_PULLDOWN); + break; + case EHCI_HCD_OMAP_MODE_UNKNOWN: + /* FALLTHROUGH */ + default: + break; + } + + switch (port_mode[1]) { + case EHCI_HCD_OMAP_MODE_PHY: + omap_mux_init_signal("hsusb2_stp", OMAP_PIN_OUTPUT); + omap_mux_init_signal("hsusb2_clk", OMAP_PIN_OUTPUT); + omap_mux_init_signal("hsusb2_dir", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_nxt", OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data0", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data1", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data2", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data3", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data4", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data5", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data6", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_data7", + OMAP_PIN_INPUT_PULLDOWN); + break; + case EHCI_HCD_OMAP_MODE_TLL: + omap_mux_init_signal("hsusb2_tll_stp", + OMAP_PIN_INPUT_PULLUP); + omap_mux_init_signal("hsusb2_tll_clk", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_dir", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_nxt", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data0", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data1", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data2", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data3", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data4", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data5", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data6", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb2_tll_data7", + OMAP_PIN_INPUT_PULLDOWN); + break; + case EHCI_HCD_OMAP_MODE_UNKNOWN: + /* FALLTHROUGH */ + default: + break; + } + + switch (port_mode[2]) { + case EHCI_HCD_OMAP_MODE_PHY: + printk(KERN_WARNING "Port3 can't be used in PHY mode\n"); + break; + case EHCI_HCD_OMAP_MODE_TLL: + omap_mux_init_signal("hsusb3_tll_stp", + OMAP_PIN_INPUT_PULLUP); + omap_mux_init_signal("hsusb3_tll_clk", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_dir", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_nxt", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data0", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data1", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data2", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data3", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data4", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data5", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data6", + OMAP_PIN_INPUT_PULLDOWN); + omap_mux_init_signal("hsusb3_tll_data7", + OMAP_PIN_INPUT_PULLDOWN); + break; + case EHCI_HCD_OMAP_MODE_UNKNOWN: + /* FALLTHROUGH */ + default: + break; + } + + return; +} + +void __init usb_ehci_init(struct ehci_hcd_omap_platform_data *pdata) +{ + platform_device_add_data(&ehci_device, pdata, sizeof(*pdata)); + + /* Setup Pin IO MUX for EHCI */ + if (cpu_is_omap34xx()) + setup_ehci_io_mux(pdata->port_mode); + + if (platform_device_register(&ehci_device) < 0) { + printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n"); + return; + } +} + +#else + +void __init usb_ehci_init(struct ehci_hcd_omap_platform_data *pdata) + +{ +} + +#endif /* CONFIG_USB_EHCI_HCD */ + |