tps65912: gpio: add gpio driver (668a6cc7) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/gpio/Kconfig

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	@@ -280,6 +280,12 @@ config GPIO_TC3589X
	This enables support for the GPIOs found on the TC3589X		This enables support for the GPIOs found on the TC3589X
	I/O Expander.		I/O Expander.

			config GPIO_TPS65912
			tristate "TI TPS65912 GPIO"
			depends on (MFD_TPS65912_I2C \|\| MFD_TPS65912_SPI)
			help
			This driver supports TPS65912 gpio chip

	config GPIO_TWL4030		config GPIO_TWL4030
	tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"		tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
	depends on TWL4030_CORE		depends on TWL4030_CORE

drivers/gpio/Makefile

+1 −0

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	@@ -48,6 +48,7 @@ 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_TPS65910) += gpio-tps65910.o		obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o
			obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o
	obj-$(CONFIG_GPIO_TWL4030) += gpio-twl4030.o		obj-$(CONFIG_GPIO_TWL4030) += gpio-twl4030.o
	obj-$(CONFIG_MACH_U300) += gpio-u300.o		obj-$(CONFIG_MACH_U300) += gpio-u300.o
	obj-$(CONFIG_GPIO_UCB1400) += gpio-ucb1400.o		obj-$(CONFIG_GPIO_UCB1400) += gpio-ucb1400.o

drivers/gpio/gpio-tps65912.c

0 → 100644

+156 −0

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			/*
			* Copyright 2011 Texas Instruments Inc.
			*
			* Author: Margarita Olaya <magi@slimlogic.co.uk>
			*
			* 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 driver is based on wm8350 implementation.
			*/

			#include <linux/kernel.h>
			#include <linux/module.h>
			#include <linux/errno.h>
			#include <linux/gpio.h>
			#include <linux/mfd/core.h>
			#include <linux/platform_device.h>
			#include <linux/seq_file.h>
			#include <linux/slab.h>
			#include <linux/mfd/tps65912.h>

			struct tps65912_gpio_data {
			struct tps65912 *tps65912;
			struct gpio_chip gpio_chip;
			};

			static int tps65912_gpio_get(struct gpio_chip *gc, unsigned offset)
			{
			struct tps65912 *tps65912 = container_of(gc, struct tps65912, gpio);
			int val;

			val = tps65912_reg_read(tps65912, TPS65912_GPIO1 + offset);

			if (val & GPIO_STS_MASK)
			return 1;

			return 0;
			}

			static void tps65912_gpio_set(struct gpio_chip *gc, unsigned offset,
			int value)
			{
			struct tps65912 *tps65912 = container_of(gc, struct tps65912, gpio);

			if (value)
			tps65912_set_bits(tps65912, TPS65912_GPIO1 + offset,
			GPIO_SET_MASK);
			else
			tps65912_clear_bits(tps65912, TPS65912_GPIO1 + offset,
			GPIO_SET_MASK);
			}

			static int tps65912_gpio_output(struct gpio_chip *gc, unsigned offset,
			int value)
			{
			struct tps65912 *tps65912 = container_of(gc, struct tps65912, gpio);

			/* Set the initial value */
			tps65912_gpio_set(gc, offset, value);

			return tps65912_set_bits(tps65912, TPS65912_GPIO1 + offset,
			GPIO_CFG_MASK);
			}

			static int tps65912_gpio_input(struct gpio_chip *gc, unsigned offset)
			{
			struct tps65912 *tps65912 = container_of(gc, struct tps65912, gpio);

			return tps65912_clear_bits(tps65912, TPS65912_GPIO1 + offset,
			GPIO_CFG_MASK);

			}

			static struct gpio_chip template_chip = {
			.label = "tps65912",
			.owner = THIS_MODULE,
			.direction_input = tps65912_gpio_input,
			.direction_output = tps65912_gpio_output,
			.get = tps65912_gpio_get,
			.set = tps65912_gpio_set,
			.can_sleep = 1,
			.ngpio = 5,
			.base = -1,
			};

			static int __devinit tps65912_gpio_probe(struct platform_device *pdev)
			{
			struct tps65912 *tps65912 = dev_get_drvdata(pdev->dev.parent);
			struct tps65912_board *pdata = tps65912->dev->platform_data;
			struct tps65912_gpio_data *tps65912_gpio;
			int ret;

			tps65912_gpio = kzalloc(sizeof(*tps65912_gpio), GFP_KERNEL);
			if (tps65912_gpio == NULL)
			return -ENOMEM;

			tps65912_gpio->tps65912 = tps65912;
			tps65912_gpio->gpio_chip = template_chip;
			tps65912_gpio->gpio_chip.dev = &pdev->dev;
			if (pdata && pdata->gpio_base)
			tps65912_gpio->gpio_chip.base = pdata->gpio_base;

			ret = gpiochip_add(&tps65912_gpio->gpio_chip);
			if (ret < 0) {
			dev_err(&pdev->dev, "Failed to register gpiochip, %d\n", ret);
			goto err;
			}

			platform_set_drvdata(pdev, tps65912_gpio);

			return ret;

			err:
			kfree(tps65912_gpio);
			return ret;
			}

			static int __devexit tps65912_gpio_remove(struct platform_device *pdev)
			{
			struct tps65912_gpio_data *tps65912_gpio = platform_get_drvdata(pdev);
			int ret;

			ret = gpiochip_remove(&tps65912_gpio->gpio_chip);
			if (ret == 0)
			kfree(tps65912_gpio);

			return ret;
			}

			static struct platform_driver tps65912_gpio_driver = {
			.driver = {
			.name = "tps65912-gpio",
			.owner = THIS_MODULE,
			},
			.probe = tps65912_gpio_probe,
			.remove = __devexit_p(tps65912_gpio_remove),
			};

			static int __init tps65912_gpio_init(void)
			{
			return platform_driver_register(&tps65912_gpio_driver);
			}
			subsys_initcall(tps65912_gpio_init);

			static void __exit tps65912_gpio_exit(void)
			{
			platform_driver_unregister(&tps65912_gpio_driver);
			}
			module_exit(tps65912_gpio_exit);

			MODULE_AUTHOR("Margarita Olaya Cabrera <magi@slimlogic.co.uk>");
			MODULE_DESCRIPTION("GPIO interface for TPS65912 PMICs");
			MODULE_LICENSE("GPL v2");
			MODULE_ALIAS("platform:tps65912-gpio");

include/linux/mfd/tps65912.h

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	@@ -275,6 +275,7 @@ struct tps65912_board {
	int is_dcdc4_avs;		int is_dcdc4_avs;
	int irq;		int irq;
	int irq_base;		int irq_base;
			int gpio_base;
	struct regulator_init_data *tps65912_pmic_init_data;		struct regulator_init_data *tps65912_pmic_init_data;
	};		};