gpio: tps65086: Add GPO driver for the TPS65086 PMIC (99f0fd54) · Commits · e / devices / android_kernel_teracube_emerald

drivers/gpio/Kconfig

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	@@ -844,6 +844,12 @@ config GPIO_TIMBERDALE
	---help---		---help---
	Add support for the GPIO IP in the timberdale FPGA.		Add support for the GPIO IP in the timberdale FPGA.

			config GPIO_TPS65086
			tristate "TI TPS65086 GPO"
			depends on MFD_TPS65086
			help
			This driver supports the GPO on TI TPS65086x PMICs.

	config GPIO_TPS6586X		config GPIO_TPS6586X
	bool "TPS6586X GPIO"		bool "TPS6586X GPIO"
	depends on MFD_TPS6586X		depends on MFD_TPS6586X

drivers/gpio/Makefile

+1 −0

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	@@ -95,6 +95,7 @@ obj-$(CONFIG_GPIO_TC3589X) += gpio-tc3589x.o
	obj-$(CONFIG_ARCH_TEGRA) += gpio-tegra.o		obj-$(CONFIG_ARCH_TEGRA) += gpio-tegra.o
	obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o		obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o
	obj-$(CONFIG_GPIO_PALMAS) += gpio-palmas.o		obj-$(CONFIG_GPIO_PALMAS) += gpio-palmas.o
			obj-$(CONFIG_GPIO_TPS65086) += gpio-tps65086.o
	obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o		obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o
	obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o		obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o
	obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o		obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o

drivers/gpio/gpio-tps65086.c

0 → 100644

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			/*
			* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
			* Andrew F. Davis <afd@ti.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.
			*
			* This program is distributed "as is" WITHOUT ANY WARRANTY of any
			* kind, whether expressed or implied; without even the implied warranty
			* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
			* GNU General Public License version 2 for more details.
			*
			* Based on the TPS65912 driver
			*/

			#include <linux/gpio.h>
			#include <linux/module.h>
			#include <linux/platform_device.h>

			#include <linux/mfd/tps65086.h>

			struct tps65086_gpio {
			struct gpio_chip chip;
			struct tps65086 *tps;
			};

			static int tps65086_gpio_get_direction(struct gpio_chip *chip,
			unsigned offset)
			{
			/* This device is output only */
			return 0;
			}

			static int tps65086_gpio_direction_input(struct gpio_chip *chip,
			unsigned offset)
			{
			/* This device is output only */
			return -EINVAL;
			}

			static int tps65086_gpio_direction_output(struct gpio_chip *chip,
			unsigned offset, int value)
			{
			struct tps65086_gpio *gpio = gpiochip_get_data(chip);

			/* Set the initial value */
			regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
			BIT(4 + offset), value ? BIT(4 + offset) : 0);

			return 0;
			}

			static int tps65086_gpio_get(struct gpio_chip *chip, unsigned offset)
			{
			struct tps65086_gpio *gpio = gpiochip_get_data(chip);
			int ret, val;

			ret = regmap_read(gpio->tps->regmap, TPS65086_GPOCTRL, &val);
			if (ret < 0)
			return ret;

			return val & BIT(4 + offset);
			}

			static void tps65086_gpio_set(struct gpio_chip *chip, unsigned offset,
			int value)
			{
			struct tps65086_gpio *gpio = gpiochip_get_data(chip);

			regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
			BIT(4 + offset), value ? BIT(4 + offset) : 0);
			}

			static struct gpio_chip template_chip = {
			.label = "tps65086-gpio",
			.owner = THIS_MODULE,
			.get_direction = tps65086_gpio_get_direction,
			.direction_input = tps65086_gpio_direction_input,
			.direction_output = tps65086_gpio_direction_output,
			.get = tps65086_gpio_get,
			.set = tps65086_gpio_set,
			.base = -1,
			.ngpio = 4,
			.can_sleep = true,
			};

			static int tps65086_gpio_probe(struct platform_device *pdev)
			{
			struct tps65086_gpio *gpio;
			int ret;

			gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
			if (!gpio)
			return -ENOMEM;

			platform_set_drvdata(pdev, gpio);

			gpio->tps = dev_get_drvdata(pdev->dev.parent);
			gpio->chip = template_chip;
			gpio->chip.parent = gpio->tps->dev;

			ret = gpiochip_add_data(&gpio->chip, gpio);
			if (ret < 0) {
			dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
			return ret;
			}

			return 0;
			}

			static int tps65086_gpio_remove(struct platform_device *pdev)
			{
			struct tps65086_gpio *gpio = platform_get_drvdata(pdev);

			gpiochip_remove(&gpio->chip);

			return 0;
			}

			static const struct platform_device_id tps65086_gpio_id_table[] = {
			{ "tps65086-gpio", },
			{ /* sentinel */ }
			};
			MODULE_DEVICE_TABLE(platform, tps65086_gpio_id_table);

			static struct platform_driver tps65086_gpio_driver = {
			.driver = {
			.name = "tps65086-gpio",
			},
			.probe = tps65086_gpio_probe,
			.remove = tps65086_gpio_remove,
			.id_table = tps65086_gpio_id_table,
			};
			module_platform_driver(tps65086_gpio_driver);

			MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
			MODULE_DESCRIPTION("TPS65086 GPIO driver");
			MODULE_LICENSE("GPL v2");