diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/Kconfig | 6 | ||||
| -rw-r--r-- | drivers/gpio/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpio/gpio-samsung.c | 9 | ||||
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 21 | ||||
| -rw-r--r-- | drivers/gpio/gpio-vt8500.c | 355 |
5 files changed, 26 insertions, 366 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 93aaadf99f2..b166e30b3bc 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -227,12 +227,6 @@ config GPIO_TS5500 blocks of the TS-5500: DIO1, DIO2 and the LCD port, and the TS-5600 LCD port. -config GPIO_VT8500 - bool "VIA/Wondermedia SoC GPIO Support" - depends on ARCH_VT8500 - help - Say yes here to support the VT8500/WM8505/WM8650 GPIO controller. - config GPIO_XILINX bool "Xilinx GPIO support" depends on PPC_OF || MICROBLAZE diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 22e07bc9fcb..a274d7df3c8 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -80,7 +80,6 @@ obj-$(CONFIG_GPIO_TWL6040) += gpio-twl6040.o obj-$(CONFIG_GPIO_UCB1400) += gpio-ucb1400.o obj-$(CONFIG_GPIO_VIPERBOARD) += gpio-viperboard.o obj-$(CONFIG_GPIO_VR41XX) += gpio-vr41xx.o -obj-$(CONFIG_GPIO_VT8500) += gpio-vt8500.o obj-$(CONFIG_GPIO_VX855) += gpio-vx855.o obj-$(CONFIG_GPIO_WM831X) += gpio-wm831x.o obj-$(CONFIG_GPIO_WM8350) += gpio-wm8350.o diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index b3643ff007e..99e0fa49fcb 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -1122,8 +1122,12 @@ int samsung_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset) #ifdef CONFIG_PLAT_S3C24XX static int s3c24xx_gpiolib_fbank_to_irq(struct gpio_chip *chip, unsigned offset) { - if (offset < 4) - return IRQ_EINT0 + offset; + if (offset < 4) { + if (soc_is_s3c2412()) + return IRQ_EINT0_2412 + offset; + else + return IRQ_EINT0 + offset; + } if (offset < 8) return IRQ_EINT4 + offset - 4; @@ -3024,6 +3028,7 @@ static __init int samsung_gpiolib_init(void) static const struct of_device_id exynos_pinctrl_ids[] = { { .compatible = "samsung,exynos4210-pinctrl", }, { .compatible = "samsung,exynos4x12-pinctrl", }, + { .compatible = "samsung,exynos5250-pinctrl", }, { .compatible = "samsung,exynos5440-pinctrl", }, }; for_each_matching_node(pctrl_np, exynos_pinctrl_ids) diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 414ad912232..e3956359202 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -72,6 +72,7 @@ struct tegra_gpio_bank { u32 oe[4]; u32 int_enb[4]; u32 int_lvl[4]; + u32 wake_enb[4]; #endif }; @@ -333,15 +334,31 @@ static int tegra_gpio_suspend(struct device *dev) bank->oe[p] = tegra_gpio_readl(GPIO_OE(gpio)); bank->int_enb[p] = tegra_gpio_readl(GPIO_INT_ENB(gpio)); bank->int_lvl[p] = tegra_gpio_readl(GPIO_INT_LVL(gpio)); + + /* Enable gpio irq for wake up source */ + tegra_gpio_writel(bank->wake_enb[p], + GPIO_INT_ENB(gpio)); } } local_irq_restore(flags); return 0; } -static int tegra_gpio_wake_enable(struct irq_data *d, unsigned int enable) +static int tegra_gpio_irq_set_wake(struct irq_data *d, unsigned int enable) { struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d); + int gpio = d->hwirq; + u32 port, bit, mask; + + port = GPIO_PORT(gpio); + bit = GPIO_BIT(gpio); + mask = BIT(bit); + + if (enable) + bank->wake_enb[port] |= mask; + else + bank->wake_enb[port] &= ~mask; + return irq_set_irq_wake(bank->irq, enable); } #endif @@ -353,7 +370,7 @@ static struct irq_chip tegra_gpio_irq_chip = { .irq_unmask = tegra_gpio_irq_unmask, .irq_set_type = tegra_gpio_irq_set_type, #ifdef CONFIG_PM_SLEEP - .irq_set_wake = tegra_gpio_wake_enable, + .irq_set_wake = tegra_gpio_irq_set_wake, #endif }; diff --git a/drivers/gpio/gpio-vt8500.c b/drivers/gpio/gpio-vt8500.c deleted file mode 100644 index 81683ca35ac..00000000000 --- a/drivers/gpio/gpio-vt8500.c +++ /dev/null @@ -1,355 +0,0 @@ -/* drivers/gpio/gpio-vt8500.c - * - * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz> - * Based on arch/arm/mach-vt8500/gpio.c: - * - Copyright (C) 2010 Alexey Charkov <alchark@gmail.com> - * - * 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/module.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/gpio.h> -#include <linux/platform_device.h> -#include <linux/bitops.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> -#include <linux/of_device.h> - -/* - We handle GPIOs by bank, each bank containing up to 32 GPIOs covered - by one set of registers (although not all may be valid). - - Because different SoC's have different register offsets, we pass the - register offsets as data in vt8500_gpio_dt_ids[]. - - A value of NO_REG is used to indicate that this register is not - supported. Only used for ->en at the moment. -*/ - -#define NO_REG 0xFFFF - -/* - * struct vt8500_gpio_bank_regoffsets - * @en: offset to enable register of the bank - * @dir: offset to direction register of the bank - * @data_out: offset to the data out register of the bank - * @data_in: offset to the data in register of the bank - * @ngpio: highest valid pin in this bank - */ - -struct vt8500_gpio_bank_regoffsets { - unsigned int en; - unsigned int dir; - unsigned int data_out; - unsigned int data_in; - unsigned char ngpio; -}; - -struct vt8500_gpio_data { - unsigned int num_banks; - struct vt8500_gpio_bank_regoffsets banks[]; -}; - -#define VT8500_BANK(__en, __dir, __out, __in, __ngpio) \ -{ \ - .en = __en, \ - .dir = __dir, \ - .data_out = __out, \ - .data_in = __in, \ - .ngpio = __ngpio, \ -} - -static struct vt8500_gpio_data vt8500_data = { - .num_banks = 7, - .banks = { - VT8500_BANK(NO_REG, 0x3C, 0x5C, 0x7C, 9), - VT8500_BANK(0x00, 0x20, 0x40, 0x60, 26), - VT8500_BANK(0x04, 0x24, 0x44, 0x64, 28), - VT8500_BANK(0x08, 0x28, 0x48, 0x68, 31), - VT8500_BANK(0x0C, 0x2C, 0x4C, 0x6C, 19), - VT8500_BANK(0x10, 0x30, 0x50, 0x70, 19), - VT8500_BANK(0x14, 0x34, 0x54, 0x74, 23), - }, -}; - -static struct vt8500_gpio_data wm8505_data = { - .num_banks = 10, - .banks = { - VT8500_BANK(0x64, 0x8C, 0xB4, 0xDC, 22), - VT8500_BANK(0x40, 0x68, 0x90, 0xB8, 8), - VT8500_BANK(0x44, 0x6C, 0x94, 0xBC, 32), - VT8500_BANK(0x48, 0x70, 0x98, 0xC0, 6), - VT8500_BANK(0x4C, 0x74, 0x9C, 0xC4, 16), - VT8500_BANK(0x50, 0x78, 0xA0, 0xC8, 25), - VT8500_BANK(0x54, 0x7C, 0xA4, 0xCC, 5), - VT8500_BANK(0x58, 0x80, 0xA8, 0xD0, 5), - VT8500_BANK(0x5C, 0x84, 0xAC, 0xD4, 12), - VT8500_BANK(0x60, 0x88, 0xB0, 0xD8, 16), - VT8500_BANK(0x500, 0x504, 0x508, 0x50C, 6), - }, -}; - -/* - * No information about which bits are valid so we just make - * them all available until its figured out. - */ -static struct vt8500_gpio_data wm8650_data = { - .num_banks = 9, - .banks = { - VT8500_BANK(0x40, 0x80, 0xC0, 0x00, 32), - VT8500_BANK(0x44, 0x84, 0xC4, 0x04, 32), - VT8500_BANK(0x48, 0x88, 0xC8, 0x08, 32), - VT8500_BANK(0x4C, 0x8C, 0xCC, 0x0C, 32), - VT8500_BANK(0x50, 0x90, 0xD0, 0x10, 32), - VT8500_BANK(0x54, 0x94, 0xD4, 0x14, 32), - VT8500_BANK(0x58, 0x98, 0xD8, 0x18, 32), - VT8500_BANK(0x5C, 0x9C, 0xDC, 0x1C, 32), - VT8500_BANK(0x7C, 0xBC, 0xFC, 0x3C, 32), - VT8500_BANK(0x500, 0x504, 0x508, 0x50C, 6), - }, -}; - -struct vt8500_gpio_chip { - struct gpio_chip chip; - - const struct vt8500_gpio_bank_regoffsets *regs; - void __iomem *base; -}; - -struct vt8500_data { - struct vt8500_gpio_chip *chip; - void __iomem *iobase; - int num_banks; -}; - - -#define to_vt8500(__chip) container_of(__chip, struct vt8500_gpio_chip, chip) - -static int vt8500_gpio_request(struct gpio_chip *chip, unsigned offset) -{ - u32 val; - struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); - - if (vt8500_chip->regs->en == NO_REG) - return 0; - - val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en); - val |= BIT(offset); - writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en); - - return 0; -} - -static void vt8500_gpio_free(struct gpio_chip *chip, unsigned offset) -{ - struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); - u32 val; - - if (vt8500_chip->regs->en == NO_REG) - return; - - val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en); - val &= ~BIT(offset); - writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en); -} - -static int vt8500_gpio_direction_input(struct gpio_chip *chip, unsigned offset) -{ - struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); - - u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir); - val &= ~BIT(offset); - writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir); - - return 0; -} - -static int vt8500_gpio_direction_output(struct gpio_chip *chip, unsigned offset, - int value) -{ - struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); - - u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir); - val |= BIT(offset); - writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir); - - if (value) { - val = readl_relaxed(vt8500_chip->base + - vt8500_chip->regs->data_out); - val |= BIT(offset); - writel_relaxed(val, vt8500_chip->base + - vt8500_chip->regs->data_out); - } - return 0; -} - -static int vt8500_gpio_get_value(struct gpio_chip *chip, unsigned offset) -{ - struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); - - return (readl_relaxed(vt8500_chip->base + vt8500_chip->regs->data_in) >> - offset) & 1; -} - -static void vt8500_gpio_set_value(struct gpio_chip *chip, unsigned offset, - int value) -{ - struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); - - u32 val = readl_relaxed(vt8500_chip->base + - vt8500_chip->regs->data_out); - if (value) - val |= BIT(offset); - else - val &= ~BIT(offset); - - writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->data_out); -} - -static int vt8500_of_xlate(struct gpio_chip *gc, - const struct of_phandle_args *gpiospec, u32 *flags) -{ - /* bank if specificed in gpiospec->args[0] */ - if (flags) - *flags = gpiospec->args[2]; - - return gpiospec->args[1]; -} - -static int vt8500_add_chips(struct platform_device *pdev, void __iomem *base, - const struct vt8500_gpio_data *data) -{ - struct vt8500_data *priv; - struct vt8500_gpio_chip *vtchip; - struct gpio_chip *chip; - int i; - int pin_cnt = 0; - - priv = devm_kzalloc(&pdev->dev, sizeof(struct vt8500_data), GFP_KERNEL); - if (!priv) { - dev_err(&pdev->dev, "failed to allocate memory\n"); - return -ENOMEM; - } - - priv->chip = devm_kzalloc(&pdev->dev, - sizeof(struct vt8500_gpio_chip) * data->num_banks, - GFP_KERNEL); - if (!priv->chip) { - dev_err(&pdev->dev, "failed to allocate chip memory\n"); - return -ENOMEM; - } - - priv->iobase = base; - priv->num_banks = data->num_banks; - platform_set_drvdata(pdev, priv); - - vtchip = priv->chip; - - for (i = 0; i < data->num_banks; i++) { - vtchip[i].base = base; - vtchip[i].regs = &data->banks[i]; - - chip = &vtchip[i].chip; - - chip->of_xlate = vt8500_of_xlate; - chip->of_gpio_n_cells = 3; - chip->of_node = pdev->dev.of_node; - - chip->request = vt8500_gpio_request; - chip->free = vt8500_gpio_free; - chip->direction_input = vt8500_gpio_direction_input; - chip->direction_output = vt8500_gpio_direction_output; - chip->get = vt8500_gpio_get_value; - chip->set = vt8500_gpio_set_value; - chip->can_sleep = 0; - chip->base = pin_cnt; - chip->ngpio = data->banks[i].ngpio; - - pin_cnt += data->banks[i].ngpio; - - gpiochip_add(chip); - } - return 0; -} - -static struct of_device_id vt8500_gpio_dt_ids[] = { - { .compatible = "via,vt8500-gpio", .data = &vt8500_data, }, - { .compatible = "wm,wm8505-gpio", .data = &wm8505_data, }, - { .compatible = "wm,wm8650-gpio", .data = &wm8650_data, }, - { /* Sentinel */ }, -}; - -static int vt8500_gpio_probe(struct platform_device *pdev) -{ - int ret; - void __iomem *gpio_base; - struct resource *res; - const struct of_device_id *of_id = - of_match_device(vt8500_gpio_dt_ids, &pdev->dev); - - if (!of_id) { - dev_err(&pdev->dev, "No matching driver data\n"); - return -ENODEV; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "Unable to get IO resource\n"); - return -ENODEV; - } - - gpio_base = devm_request_and_ioremap(&pdev->dev, res); - if (!gpio_base) { - dev_err(&pdev->dev, "Unable to map GPIO registers\n"); - return -ENOMEM; - } - - ret = vt8500_add_chips(pdev, gpio_base, of_id->data); - - return ret; -} - -static int vt8500_gpio_remove(struct platform_device *pdev) -{ - int i; - int ret; - struct vt8500_data *priv = platform_get_drvdata(pdev); - struct vt8500_gpio_chip *vtchip = priv->chip; - - for (i = 0; i < priv->num_banks; i++) { - ret = gpiochip_remove(&vtchip[i].chip); - if (ret) - dev_warn(&pdev->dev, "gpiochip_remove returned %d\n", - ret); - } - - return 0; -} - -static struct platform_driver vt8500_gpio_driver = { - .probe = vt8500_gpio_probe, - .remove = vt8500_gpio_remove, - .driver = { - .name = "vt8500-gpio", - .owner = THIS_MODULE, - .of_match_table = vt8500_gpio_dt_ids, - }, -}; - -module_platform_driver(vt8500_gpio_driver); - -MODULE_DESCRIPTION("VT8500 GPIO Driver"); -MODULE_AUTHOR("Tony Prisk <linux@prisktech.co.nz>"); -MODULE_LICENSE("GPL v2"); -MODULE_DEVICE_TABLE(of, vt8500_gpio_dt_ids); |