diff options
| -rw-r--r-- | drivers/pinctrl/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/pinctrl/Makefile | 1 | ||||
| -rw-r--r-- | drivers/pinctrl/pinctrl-exynos.c | 560 | ||||
| -rw-r--r-- | drivers/pinctrl/pinctrl-exynos.h | 217 |
4 files changed, 782 insertions, 0 deletions
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index ffed467422e7..34e94c7f68ca 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -150,6 +150,10 @@ config PINCTRL_SAMSUNG select PINMUX select PINCONF +config PINCTRL_EXYNOS4 + bool "Pinctrl driver data for Exynos4 SoC" + select PINCTRL_SAMSUNG + source "drivers/pinctrl/spear/Kconfig" endmenu diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 656ed83372cf..6a88113e11d9 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -30,5 +30,6 @@ obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o obj-$(CONFIG_PINCTRL_SAMSUNG) += pinctrl-samsung.o +obj-$(CONFIG_PINCTRL_EXYNOS4) += pinctrl-exynos.o obj-$(CONFIG_PLAT_SPEAR) += spear/ diff --git a/drivers/pinctrl/pinctrl-exynos.c b/drivers/pinctrl/pinctrl-exynos.c new file mode 100644 index 000000000000..447818d9851b --- /dev/null +++ b/drivers/pinctrl/pinctrl-exynos.c @@ -0,0 +1,560 @@ +/* + * Exynos specific support for Samsung pinctrl/gpiolib driver with eint support. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2012 Linaro Ltd + * http://www.linaro.org + * + * Author: Thomas Abraham <thomas.ab@samsung.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 file contains the Samsung Exynos specific information required by the + * the Samsung pinctrl/gpiolib driver. It also includes the implementation of + * external gpio and wakeup interrupt support. + */ + +#include <linux/module.h> +#include <linux/device.h> +#include <linux/interrupt.h> +#include <linux/irqdomain.h> +#include <linux/irq.h> +#include <linux/of_irq.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/err.h> + +#include <asm/mach/irq.h> + +#include "pinctrl-samsung.h" +#include "pinctrl-exynos.h" + +/* list of external wakeup controllers supported */ +static const struct of_device_id exynos_wkup_irq_ids[] = { + { .compatible = "samsung,exynos4210-wakeup-eint", }, +}; + +static void exynos_gpio_irq_unmask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned long reg_mask = d->ctrl->geint_mask + edata->eint_offset; + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask &= ~(1 << edata->pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_gpio_irq_mask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned long reg_mask = d->ctrl->geint_mask + edata->eint_offset; + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask |= ~(1 << edata->pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_gpio_irq_ack(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned long reg_pend = d->ctrl->geint_pend + edata->eint_offset; + + writel(1 << edata->pin, d->virt_base + reg_pend); +} + +static int exynos_gpio_irq_set_type(struct irq_data *irqd, unsigned int type) +{ + struct samsung_pinctrl_drv_data *d = irqd->domain->host_data; + struct samsung_pin_ctrl *ctrl = d->ctrl; + struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd); + unsigned int shift = EXYNOS_EINT_CON_LEN * edata->pin; + unsigned int con, trig_type; + unsigned long reg_con = ctrl->geint_con + edata->eint_offset; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + trig_type = EXYNOS_EINT_EDGE_RISING; + break; + case IRQ_TYPE_EDGE_FALLING: + trig_type = EXYNOS_EINT_EDGE_FALLING; + break; + case IRQ_TYPE_EDGE_BOTH: + trig_type = EXYNOS_EINT_EDGE_BOTH; + break; + case IRQ_TYPE_LEVEL_HIGH: + trig_type = EXYNOS_EINT_LEVEL_HIGH; + break; + case IRQ_TYPE_LEVEL_LOW: + trig_type = EXYNOS_EINT_LEVEL_LOW; + break; + default: + pr_err("unsupported external interrupt type\n"); + return -EINVAL; + } + + if (type & IRQ_TYPE_EDGE_BOTH) + __irq_set_handler_locked(irqd->irq, handle_edge_irq); + else + __irq_set_handler_locked(irqd->irq, handle_level_irq); + + con = readl(d->virt_base + reg_con); + con &= ~(EXYNOS_EINT_CON_MASK << shift); + con |= trig_type << shift; + writel(con, d->virt_base + reg_con); + return 0; +} + +/* + * irq_chip for gpio interrupts. + */ +static struct irq_chip exynos_gpio_irq_chip = { + .name = "exynos_gpio_irq_chip", + .irq_unmask = exynos_gpio_irq_unmask, + .irq_mask = exynos_gpio_irq_mask, + .irq_ack = exynos_gpio_irq_ack, + .irq_set_type = exynos_gpio_irq_set_type, +}; + +/* + * given a controller-local external gpio interrupt number, prepare the handler + * data for it. + */ +static struct exynos_geint_data *exynos_get_eint_data(irq_hw_number_t hw, + struct samsung_pinctrl_drv_data *d) +{ + struct samsung_pin_bank *bank = d->ctrl->pin_banks; + struct exynos_geint_data *eint_data; + unsigned int nr_banks = d->ctrl->nr_banks, idx; + unsigned int irq_base = 0, eint_offset = 0; + + if (hw >= d->ctrl->nr_gint) { + dev_err(d->dev, "unsupported ext-gpio interrupt\n"); + return NULL; + } + + for (idx = 0; idx < nr_banks; idx++, bank++) { + if (bank->eint_type != EINT_TYPE_GPIO) + continue; + if ((hw >= irq_base) && (hw < (irq_base + bank->nr_pins))) + break; + irq_base += bank->nr_pins; + eint_offset += 4; + } + + if (idx == nr_banks) { + dev_err(d->dev, "pin bank not found for ext-gpio interrupt\n"); + return NULL; + } + + eint_data = devm_kzalloc(d->dev, sizeof(*eint_data), GFP_KERNEL); + if (!eint_data) { + dev_err(d->dev, "no memory for eint-gpio data\n"); + return NULL; + } + + eint_data->bank = bank; + eint_data->pin = hw - irq_base; + eint_data->eint_offset = eint_offset; + return eint_data; +} + +static int exynos_gpio_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct samsung_pinctrl_drv_data *d = h->host_data; + struct exynos_geint_data *eint_data; + + eint_data = exynos_get_eint_data(hw, d); + if (!eint_data) + return -EINVAL; + + irq_set_handler_data(virq, eint_data); + irq_set_chip_data(virq, h->host_data); + irq_set_chip_and_handler(virq, &exynos_gpio_irq_chip, + handle_level_irq); + set_irq_flags(virq, IRQF_VALID); + return 0; +} + +static void exynos_gpio_irq_unmap(struct irq_domain *h, unsigned int virq) +{ + struct samsung_pinctrl_drv_data *d = h->host_data; + struct exynos_geint_data *eint_data; + + eint_data = irq_get_handler_data(virq); + devm_kfree(d->dev, eint_data); +} + +/* + * irq domain callbacks for external gpio interrupt controller. + */ +static const struct irq_domain_ops exynos_gpio_irqd_ops = { + .map = exynos_gpio_irq_map, + .unmap = exynos_gpio_irq_unmap, + .xlate = irq_domain_xlate_twocell, +}; + +static irqreturn_t exynos_eint_gpio_irq(int irq, void *data) +{ + struct samsung_pinctrl_drv_data *d = data; + struct samsung_pin_ctrl *ctrl = d->ctrl; + struct samsung_pin_bank *bank = ctrl->pin_banks; + unsigned int svc, group, pin, virq; + + svc = readl(d->virt_base + ctrl->svc); + group = EXYNOS_SVC_GROUP(svc); + pin = svc & EXYNOS_SVC_NUM_MASK; + + if (!group) + return IRQ_HANDLED; + bank += (group - 1); + + virq = irq_linear_revmap(d->gpio_irqd, bank->irq_base + pin); + if (!virq) + return IRQ_NONE; + generic_handle_irq(virq); + return IRQ_HANDLED; +} + +/* + * exynos_eint_gpio_init() - setup handling of external gpio interrupts. + * @d: driver data of samsung pinctrl driver. + */ +static int exynos_eint_gpio_init(struct samsung_pinctrl_drv_data *d) +{ + struct device *dev = d->dev; + unsigned int ret; + + if (!d->irq) { + dev_err(dev, "irq number not available\n"); + return -EINVAL; + } + + ret = devm_request_irq(dev, d->irq, exynos_eint_gpio_irq, + 0, dev_name(dev), d); + if (ret) { + dev_err(dev, "irq request failed\n"); + return -ENXIO; + } + + d->gpio_irqd = irq_domain_add_linear(dev->of_node, d->ctrl->nr_gint, + &exynos_gpio_irqd_ops, d); + if (!d->gpio_irqd) { + dev_err(dev, "gpio irq domain allocation failed\n"); + return -ENXIO; + } + + return 0; +} + +static void exynos_wkup_irq_unmask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long reg_mask = d->ctrl->weint_mask + (bank << 2); + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask &= ~(1 << pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_wkup_irq_mask(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long reg_mask = d->ctrl->weint_mask + (bank << 2); + unsigned long mask; + + mask = readl(d->virt_base + reg_mask); + mask &= ~(1 << pin); + writel(mask, d->virt_base + reg_mask); +} + +static void exynos_wkup_irq_ack(struct irq_data *irqd) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long pend = d->ctrl->weint_pend + (bank << 2); + + writel(1 << pin, d->virt_base + pend); +} + +static int exynos_wkup_irq_set_type(struct irq_data *irqd, unsigned int type) +{ + struct samsung_pinctrl_drv_data *d = irq_data_get_irq_chip_data(irqd); + unsigned int bank = irqd->hwirq / EXYNOS_EINT_MAX_PER_BANK; + unsigned int pin = irqd->hwirq & (EXYNOS_EINT_MAX_PER_BANK - 1); + unsigned long reg_con = d->ctrl->weint_con + (bank << 2); + unsigned long shift = EXYNOS_EINT_CON_LEN * pin; + unsigned long con, trig_type; + + switch (type) { + case IRQ_TYPE_EDGE_RISING: + trig_type = EXYNOS_EINT_EDGE_RISING; + break; + case IRQ_TYPE_EDGE_FALLING: + trig_type = EXYNOS_EINT_EDGE_FALLING; + break; + case IRQ_TYPE_EDGE_BOTH: + trig_type = EXYNOS_EINT_EDGE_BOTH; + break; + case IRQ_TYPE_LEVEL_HIGH: + trig_type = EXYNOS_EINT_LEVEL_HIGH; + break; + case IRQ_TYPE_LEVEL_LOW: + trig_type = EXYNOS_EINT_LEVEL_LOW; + break; + default: + pr_err("unsupported external interrupt type\n"); + return -EINVAL; + } + + if (type & IRQ_TYPE_EDGE_BOTH) + __irq_set_handler_locked(irqd->irq, handle_edge_irq); + else + __irq_set_handler_locked(irqd->irq, handle_level_irq); + + con = readl(d->virt_base + reg_con); + con &= ~(EXYNOS_EINT_CON_MASK << shift); + con |= trig_type << shift; + writel(con, d->virt_base + reg_con); + return 0; +} + +/* + * irq_chip for wakeup interrupts + */ +static struct irq_chip exynos_wkup_irq_chip = { + .name = "exynos_wkup_irq_chip", + .irq_unmask = exynos_wkup_irq_unmask, + .irq_mask = exynos_wkup_irq_mask, + .irq_ack = exynos_wkup_irq_ack, + .irq_set_type = exynos_wkup_irq_set_type, +}; + +/* interrupt handler for wakeup interrupts 0..15 */ +static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc) +{ + struct exynos_weint_data *eintd = irq_get_handler_data(irq); + struct irq_chip *chip = irq_get_chip(irq); + int eint_irq; + + chained_irq_enter(chip, desc); + chip->irq_mask(&desc->irq_data); + + if (chip->irq_ack) + chip->irq_ack(&desc->irq_data); + + eint_irq = irq_linear_revmap(eintd->domain, eintd->irq); + generic_handle_irq(eint_irq); + chip->irq_unmask(&desc->irq_data); + chained_irq_exit(chip, desc); +} + +static void exynos_irq_demux_eint(int irq_base, unsigned long pend, + struct irq_domain *domain) +{ + unsigned int irq; + + while (pend) { + irq = fls(pend) - 1; + generic_handle_irq(irq_find_mapping(domain, irq_base + irq)); + pend &= ~(1 << irq); + } +} + +/* interrupt handler for wakeup interrupt 16 */ +static void exynos_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc) +{ + struct irq_chip *chip = irq_get_chip(irq); + struct exynos_weint_data *eintd = irq_get_handler_data(irq); + struct samsung_pinctrl_drv_data *d = eintd->domain->host_data; + unsigned long pend; + + chained_irq_enter(chip, desc); + pend = readl(d->virt_base + d->ctrl->weint_pend + 0x8); + exynos_irq_demux_eint(16, pend, eintd->domain); + pend = readl(d->virt_base + d->ctrl->weint_pend + 0xC); + exynos_irq_demux_eint(24, pend, eintd->domain); + chained_irq_exit(chip, desc); +} + +static int exynos_wkup_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + irq_set_chip_and_handler(virq, &exynos_wkup_irq_chip, handle_level_irq); + irq_set_chip_data(virq, h->host_data); + set_irq_flags(virq, IRQF_VALID); + return 0; +} + +/* + * irq domain callbacks for external wakeup interrupt controller. + */ +static const struct irq_domain_ops exynos_wkup_irqd_ops = { + .map = exynos_wkup_irq_map, + .xlate = irq_domain_xlate_twocell, +}; + +/* + * exynos_eint_wkup_init() - setup handling of external wakeup interrupts. + * @d: driver data of samsung pinctrl driver. + */ +static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) +{ + struct device *dev = d->dev; + struct device_node *wkup_np; + struct exynos_weint_data *weint_data; + int idx, irq; + + wkup_np = of_find_matching_node(dev->of_node, exynos_wkup_irq_ids); + if (!wkup_np) { + dev_err(dev, "wakeup controller node not found\n"); + return -ENODEV; + } + + d->wkup_irqd = irq_domain_add_linear(wkup_np, d->ctrl->nr_wint, + &exynos_wkup_irqd_ops, d); + if (!d->gpio_irqd) { + dev_err(dev, "wakeup irq domain allocation failed\n"); + return -ENXIO; + } + + weint_data = devm_kzalloc(dev, sizeof(*weint_data) * 17, GFP_KERNEL); + if (!weint_data) { + dev_err(dev, "could not allocate memory for weint_data\n"); + return -ENOMEM; + } + + irq = irq_of_parse_and_map(wkup_np, 16); + if (irq) { + weint_data[16].domain = d->wkup_irqd; + irq_set_chained_handler(irq, exynos_irq_demux_eint16_31); + irq_set_handler_data(irq, &weint_data[16]); + } else { + dev_err(dev, "irq number for EINT16-32 not found\n"); + } + + for (idx = 0; idx < 16; idx++) { + weint_data[idx].domain = d->wkup_irqd; + weint_data[idx].irq = idx; + + irq = irq_of_parse_and_map(wkup_np, idx); + if (irq) { + irq_set_handler_data(irq, &weint_data[idx]); + irq_set_chained_handler(irq, exynos_irq_eint0_15); + } else { + dev_err(dev, "irq number for eint-%x not found\n", idx); + } + } + return 0; +} + +/* pin banks of exynos4210 pin-controller 0 */ +static struct samsung_pin_bank exynos4210_pin_banks0[] = { + EXYNOS_PIN_BANK_EINTG(0x000, EXYNOS4210_GPIO_A0, "gpa0"), + EXYNOS_PIN_BANK_EINTG(0x020, EXYNOS4210_GPIO_A1, "gpa1"), + EXYNOS_PIN_BANK_EINTG(0x040, EXYNOS4210_GPIO_B, "gpb"), + EXYNOS_PIN_BANK_EINTG(0x060, EXYNOS4210_GPIO_C0, "gpc0"), + EXYNOS_PIN_BANK_EINTG(0x080, EXYNOS4210_GPIO_C1, "gpc1"), + EXYNOS_PIN_BANK_EINTG(0x0A0, EXYNOS4210_GPIO_D0, "gpd0"), + EXYNOS_PIN_BANK_EINTG(0x0C0, EXYNOS4210_GPIO_D1, "gpd1"), + EXYNOS_PIN_BANK_EINTG(0x0E0, EXYNOS4210_GPIO_E0, "gpe0"), + EXYNOS_PIN_BANK_EINTG(0x100, EXYNOS4210_GPIO_E1, "gpe1"), + EXYNOS_PIN_BANK_EINTG(0x120, EXYNOS4210_GPIO_E2, "gpe2"), + EXYNOS_PIN_BANK_EINTG(0x140, EXYNOS4210_GPIO_E3, "gpe3"), + EXYNOS_PIN_BANK_EINTG(0x160, EXYNOS4210_GPIO_E4, "gpe4"), + EXYNOS_PIN_BANK_EINTG(0x180, EXYNOS4210_GPIO_F0, "gpf0"), + EXYNOS_PIN_BANK_EINTG(0x1A0, EXYNOS4210_GPIO_F1, "gpf1"), + EXYNOS_PIN_BANK_EINTG(0x1C0, EXYNOS4210_GPIO_F2, "gpf2"), + EXYNOS_PIN_BANK_EINTG(0x1E0, EXYNOS4210_GPIO_F3, "gpf3"), +}; + +/* pin banks of exynos4210 pin-controller 1 */ +static struct samsung_pin_bank exynos4210_pin_banks1[] = { + EXYNOS_PIN_BANK_EINTG(0x000, EXYNOS4210_GPIO_J0, "gpj0"), + EXYNOS_PIN_BANK_EINTG(0x020, EXYNOS4210_GPIO_J1, "gpj1"), + EXYNOS_PIN_BANK_EINTG(0x040, EXYNOS4210_GPIO_K0, "gpk0"), + EXYNOS_PIN_BANK_EINTG(0x060, EXYNOS4210_GPIO_K1, "gpk1"), + EXYNOS_PIN_BANK_EINTG(0x080, EXYNOS4210_GPIO_K2, "gpk2"), + EXYNOS_PIN_BANK_EINTG(0x0A0, EXYNOS4210_GPIO_K3, "gpk3"), + EXYNOS_PIN_BANK_EINTG(0x0C0, EXYNOS4210_GPIO_L0, "gpl0"), + EXYNOS_PIN_BANK_EINTG(0x0E0, EXYNOS4210_GPIO_L1, "gpl1"), + EXYNOS_PIN_BANK_EINTG(0x100, EXYNOS4210_GPIO_L2, "gpl2"), + EXYNOS_PIN_BANK_EINTN(0x120, EXYNOS4210_GPIO_Y0, "gpy0"), + EXYNOS_PIN_BANK_EINTN(0x140, EXYNOS4210_GPIO_Y1, "gpy1"), + EXYNOS_PIN_BANK_EINTN(0x160, EXYNOS4210_GPIO_Y2, "gpy2"), + EXYNOS_PIN_BANK_EINTN(0x180, EXYNOS4210_GPIO_Y3, "gpy3"), + EXYNOS_PIN_BANK_EINTN(0x1A0, EXYNOS4210_GPIO_Y4, "gpy4"), + EXYNOS_PIN_BANK_EINTN(0x1C0, EXYNOS4210_GPIO_Y5, "gpy5"), + EXYNOS_PIN_BANK_EINTN(0x1E0, EXYNOS4210_GPIO_Y6, "gpy6"), + EXYNOS_PIN_BANK_EINTN(0xC00, EXYNOS4210_GPIO_X0, "gpx0"), + EXYNOS_PIN_BANK_EINTN(0xC20, EXYNOS4210_GPIO_X1, "gpx1"), + EXYNOS_PIN_BANK_EINTN(0xC40, EXYNOS4210_GPIO_X2, "gpx2"), + EXYNOS_PIN_BANK_EINTN(0xC60, EXYNOS4210_GPIO_X3, "gpx3"), +}; + +/* pin banks of exynos4210 pin-controller 2 */ +static struct samsung_pin_bank exynos4210_pin_banks2[] = { + EXYNOS_PIN_BANK_EINTN(0x000, EXYNOS4210_GPIO_Z, "gpz"), +}; + +/* + * Samsung pinctrl driver data for Exynos4210 SoC. Exynos4210 SoC includes + * three gpio/pin-mux/pinconfig controllers. + */ +struct samsung_pin_ctrl exynos4210_pin_ctrl[] = { + { + /* pin-controller instance 0 data */ + .pin_banks = exynos4210_pin_banks0, + .nr_banks = ARRAY_SIZE(exynos4210_pin_banks0), + .base = EXYNOS4210_GPIO_A0_START, + .nr_pins = EXYNOS4210_GPIOA_NR_PINS, + .nr_gint = EXYNOS4210_GPIOA_NR_GINT, + .geint_con = EXYNOS_GPIO_ECON_OFFSET, + .geint_mask = EXYNOS_GPIO_EMASK_OFFSET, + .geint_pend = EXYNOS_GPIO_EPEND_OFFSET, + .svc = EXYNOS_SVC_OFFSET, + .eint_gpio_init = exynos_eint_gpio_init, + .label = "exynos4210-gpio-ctrl0", + }, { + /* pin-controller instance 1 data */ + .pin_banks = exynos4210_pin_banks1, + .nr_banks = ARRAY_SIZE(exynos4210_pin_banks1), + .base = EXYNOS4210_GPIOA_NR_PINS, + .nr_pins = EXYNOS4210_GPIOB_NR_PINS, + .nr_gint = EXYNOS4210_GPIOB_NR_GINT, + .nr_wint = 32, + .geint_con = EXYNOS_GPIO_ECON_OFFSET, + .geint_mask = EXYNOS_GPIO_EMASK_OFFSET, + .geint_pend = EXYNOS_GPIO_EPEND_OFFSET, + .weint_con = EXYNOS_WKUP_ECON_OFFSET, + .weint_mask = EXYNOS_WKUP_EMASK_OFFSET, + .weint_pend = EXYNOS_WKUP_EPEND_OFFSET, + .svc = EXYNOS_SVC_OFFSET, + .eint_gpio_init = exynos_eint_gpio_init, + .eint_wkup_init = exynos_eint_wkup_init, + .label = "exynos4210-gpio-ctrl1", + }, { + /* pin-controller instance 2 data */ + .pin_banks = exynos4210_pin_banks2, + .nr_banks = ARRAY_SIZE(exynos4210_pin_banks2), + .base = EXYNOS4210_GPIOA_NR_PINS + + EXYNOS4210_GPIOB_NR_PINS, + .nr_pins = EXYNOS4210_GPIOC_NR_PINS, + .label = "exynos4210-gpio-ctrl2", + }, +}; diff --git a/drivers/pinctrl/pinctrl-exynos.h b/drivers/pinctrl/pinctrl-exynos.h new file mode 100644 index 000000000000..5f27ba974a3a --- /dev/null +++ b/drivers/pinctrl/pinctrl-exynos.h @@ -0,0 +1,217 @@ +/* + * Exynos specific definitions for Samsung pinctrl and gpiolib driver. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2012 Linaro Ltd + * http://www.linaro.org + * + * This file contains the Exynos specific definitions for the Samsung + * pinctrl/gpiolib interface drivers. + * + * Author: Thomas Abraham <thomas.ab@samsung.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. + */ + +#define EXYNOS_GPIO_START(__gpio) ((__gpio##_START) + (__gpio##_NR)) + +#define EXYNOS4210_GPIO_A0_NR (8) +#define EXYNOS4210_GPIO_A1_NR (6) +#define EXYNOS4210_GPIO_B_NR (8) +#define EXYNOS4210_GPIO_C0_NR (5) +#define EXYNOS4210_GPIO_C1_NR (5) +#define EXYNOS4210_GPIO_D0_NR (4) +#define EXYNOS4210_GPIO_D1_NR (4) +#define EXYNOS4210_GPIO_E0_NR (5) +#define EXYNOS4210_GPIO_E1_NR (8) +#define EXYNOS4210_GPIO_E2_NR (6) +#define EXYNOS4210_GPIO_E3_NR (8) +#define EXYNOS4210_GPIO_E4_NR (8) +#define EXYNOS4210_GPIO_F0_NR (8) +#define EXYNOS4210_GPIO_F1_NR (8) +#define EXYNOS4210_GPIO_F2_NR (8) +#define EXYNOS4210_GPIO_F3_NR (6) +#define EXYNOS4210_GPIO_J0_NR (8) +#define EXYNOS4210_GPIO_J1_NR (5) +#define EXYNOS4210_GPIO_K0_NR (7) +#define EXYNOS4210_GPIO_K1_NR (7) +#define EXYNOS4210_GPIO_K2_NR (7) +#define EXYNOS4210_GPIO_K3_NR (7) +#define EXYNOS4210_GPIO_L0_NR (8) +#define EXYNOS4210_GPIO_L1_NR (3) +#define EXYNOS4210_GPIO_L2_NR (8) +#define EXYNOS4210_GPIO_Y0_NR (6) +#define EXYNOS4210_GPIO_Y1_NR (4) +#define EXYNOS4210_GPIO_Y2_NR (6) +#define EXYNOS4210_GPIO_Y3_NR (8) +#define EXYNOS4210_GPIO_Y4_NR (8) +#define EXYNOS4210_GPIO_Y5_NR (8) +#define EXYNOS4210_GPIO_Y6_NR (8) +#define EXYNOS4210_GPIO_X0_NR (8) +#define EXYNOS4210_GPIO_X1_NR (8) +#define EXYNOS4210_GPIO_X2_NR (8) +#define EXYNOS4210_GPIO_X3_NR (8) +#define EXYNOS4210_GPIO_Z_NR (7) + +enum exynos4210_gpio_xa_start { + EXYNOS4210_GPIO_A0_START = 0, + EXYNOS4210_GPIO_A1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_A0), + EXYNOS4210_GPIO_B_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_A1), + EXYNOS4210_GPIO_C0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_B), + EXYNOS4210_GPIO_C1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_C0), + EXYNOS4210_GPIO_D0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_C1), + EXYNOS4210_GPIO_D1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_D0), + EXYNOS4210_GPIO_E0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_D1), + EXYNOS4210_GPIO_E1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E0), + EXYNOS4210_GPIO_E2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E1), + EXYNOS4210_GPIO_E3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E2), + EXYNOS4210_GPIO_E4_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E3), + EXYNOS4210_GPIO_F0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_E4), + EXYNOS4210_GPIO_F1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_F0), + EXYNOS4210_GPIO_F2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_F1), + EXYNOS4210_GPIO_F3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_F2), +}; + +enum exynos4210_gpio_xb_start { + EXYNOS4210_GPIO_J0_START = 0, + EXYNOS4210_GPIO_J1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_J0), + EXYNOS4210_GPIO_K0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_J1), + EXYNOS4210_GPIO_K1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K0), + EXYNOS4210_GPIO_K2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K1), + EXYNOS4210_GPIO_K3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K2), + EXYNOS4210_GPIO_L0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_K3), + EXYNOS4210_GPIO_L1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_L0), + EXYNOS4210_GPIO_L2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_L1), + EXYNOS4210_GPIO_Y0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_L2), + EXYNOS4210_GPIO_Y1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y0), + EXYNOS4210_GPIO_Y2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y1), + EXYNOS4210_GPIO_Y3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y2), + EXYNOS4210_GPIO_Y4_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y3), + EXYNOS4210_GPIO_Y5_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y4), + EXYNOS4210_GPIO_Y6_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y5), + EXYNOS4210_GPIO_X0_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_Y6), + EXYNOS4210_GPIO_X1_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_X0), + EXYNOS4210_GPIO_X2_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_X1), + EXYNOS4210_GPIO_X3_START = EXYNOS_GPIO_START(EXYNOS4210_GPIO_X2), +}; + +enum exynos4210_gpio_xc_start { + EXYNOS4210_GPIO_Z_START = 0, +}; + +#define EXYNOS4210_GPIO_A0_IRQ EXYNOS4210_GPIO_A0_START +#define EXYNOS4210_GPIO_A1_IRQ EXYNOS4210_GPIO_A1_START +#define EXYNOS4210_GPIO_B_IRQ EXYNOS4210_GPIO_B_START +#define EXYNOS4210_GPIO_C0_IRQ EXYNOS4210_GPIO_C0_START +#define EXYNOS4210_GPIO_C1_IRQ EXYNOS4210_GPIO_C1_START +#define EXYNOS4210_GPIO_D0_IRQ EXYNOS4210_GPIO_D0_START +#define EXYNOS4210_GPIO_D1_IRQ EXYNOS4210_GPIO_D1_START +#define EXYNOS4210_GPIO_E0_IRQ EXYNOS4210_GPIO_E0_START +#define EXYNOS4210_GPIO_E1_IRQ EXYNOS4210_GPIO_E1_START +#define EXYNOS4210_GPIO_E2_IRQ EXYNOS4210_GPIO_E2_START +#define EXYNOS4210_GPIO_E3_IRQ EXYNOS4210_GPIO_E3_START +#define EXYNOS4210_GPIO_E4_IRQ EXYNOS4210_GPIO_E4_START +#define EXYNOS4210_GPIO_F0_IRQ EXYNOS4210_GPIO_F0_START +#define EXYNOS4210_GPIO_F1_IRQ EXYNOS4210_GPIO_F1_START +#define EXYNOS4210_GPIO_F2_IRQ EXYNOS4210_GPIO_F2_START +#define EXYNOS4210_GPIO_F3_IRQ EXYNOS4210_GPIO_F3_START +#define EXYNOS4210_GPIO_J0_IRQ EXYNOS4210_GPIO_J0_START +#define EXYNOS4210_GPIO_J1_IRQ EXYNOS4210_GPIO_J1_START +#define EXYNOS4210_GPIO_K0_IRQ EXYNOS4210_GPIO_K0_START +#define EXYNOS4210_GPIO_K1_IRQ EXYNOS4210_GPIO_K1_START +#define EXYNOS4210_GPIO_K2_IRQ EXYNOS4210_GPIO_K2_START +#define EXYNOS4210_GPIO_K3_IRQ EXYNOS4210_GPIO_K3_START +#define EXYNOS4210_GPIO_L0_IRQ EXYNOS4210_GPIO_L0_START +#define EXYNOS4210_GPIO_L1_IRQ EXYNOS4210_GPIO_L1_START +#define EXYNOS4210_GPIO_L2_IRQ EXYNOS4210_GPIO_L2_START +#define EXYNOS4210_GPIO_Z_IRQ EXYNOS4210_GPIO_Z_START + +#define EXYNOS4210_GPIOA_NR_PINS EXYNOS_GPIO_START(EXYNOS4210_GPIO_F3) +#define EXYNOS4210_GPIOA_NR_GINT EXYNOS_GPIO_START(EXYNOS4210_GPIO_F3) +#define EXYNOS4210_GPIOB_NR_PINS EXYNOS_GPIO_START(EXYNOS4210_GPIO_X3) +#define EXYNOS4210_GPIOB_NR_GINT EXYNOS_GPIO_START(EXYNOS4210_GPIO_L2) +#define EXYNOS4210_GPIOC_NR_PINS EXYNOS_GPIO_START(EXYNOS4210_GPIO_Z) + +/* External GPIO and wakeup interrupt related definitions */ +#define EXYNOS_GPIO_ECON_OFFSET 0x700 +#define EXYNOS_GPIO_EMASK_OFFSET 0x900 +#define EXYNOS_GPIO_EPEND_OFFSET 0xA00 +#define EXYNOS_WKUP_ECON_OFFSET 0xE00 +#define EXYNOS_WKUP_EMASK_OFFSET 0xF00 +#define EXYNOS_WKUP_EPEND_OFFSET 0xF40 +#define EXYNOS_SVC_OFFSET 0xB08 + +/* helpers to access interrupt service register */ +#define EXYNOS_SVC_GROUP_SHIFT 3 +#define EXYNOS_SVC_GROUP_MASK 0x1f +#define EXYNOS_SVC_NUM_MASK 7 +#define EXYNOS_SVC_GROUP(x) ((x >> EXYNOS_SVC_GROUP_SHIFT) & \ + EXYNOS_SVC_GROUP_MASK) + +/* Exynos specific external interrupt trigger types */ +#define EXYNOS_EINT_LEVEL_LOW 0 +#define EXYNOS_EINT_LEVEL_HIGH 1 +#define EXYNOS_EINT_EDGE_FALLING 2 +#define EXYNOS_EINT_EDGE_RISING 3 +#define EXYNOS_EINT_EDGE_BOTH 4 +#define EXYNOS_EINT_CON_MASK 0xF +#define EXYNOS_EINT_CON_LEN 4 + +#define EXYNOS_EINT_MAX_PER_BANK 8 +#define EXYNOS_EINT_NR_WKUP_EINT + +#define EXYNOS_PIN_BANK_EINTN(reg, __gpio, id) \ + { \ + .pctl_offset = reg, \ + .pin_base = (__gpio##_START), \ + .nr_pins = (__gpio##_NR), \ + .func_width = 4, \ + .pud_width = 2, \ + .drv_width = 2, \ + .conpdn_width = 2, \ + .pudpdn_width = 2, \ + .eint_type = EINT_TYPE_NONE, \ + .name = id \ + } + +#define EXYNOS_PIN_BANK_EINTG(reg, __gpio, id) \ + { \ + .pctl_offset = reg, \ + .pin_base = (__gpio##_START), \ + .nr_pins = (__gpio##_NR), \ + .func_width = 4, \ + .pud_width = 2, \ + .drv_width = 2, \ + .conpdn_width = 2, \ + .pudpdn_width = 2, \ + .eint_type = EINT_TYPE_GPIO, \ + .irq_base = (__gpio##_IRQ), \ + .name = id \ + } + +/** + * struct exynos_geint_data: gpio eint specific data for irq_chip callbacks. + * @bank: pin bank from which this gpio interrupt originates. + * @pin: pin number within the bank. + * @eint_offset: offset to be added to the con/pend/mask register bank base. + */ +struct exynos_geint_data { + struct samsung_pin_bank *bank; + u32 pin; + u32 eint_offset; +}; + +/** + * struct exynos_weint_data: irq specific data for all the wakeup interrupts + * generated by the external wakeup interrupt controller. + * @domain: irq domain representing the external wakeup interrupts + * @irq: interrupt number within the domain. + */ +struct exynos_weint_data { + struct irq_domain *domain; + u32 irq; +}; |