TPS65910: GPIO: Add GPIO driver (2537df72) · Commits · 戴 / test

drivers/mfd/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -93,4 +93,4 @@ obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
		obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o
		obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o
		obj-$(CONFIG_MFD_PM8XXX_IRQ) += pm8xxx-irq.o
		obj-$(CONFIG_MFD_TPS65910) += tps65910.o
		obj-$(CONFIG_MFD_TPS65910) += tps65910.o tps65910-gpio.o

drivers/mfd/tps65910-gpio.c

0 → 100644

+91 −0

Original line number	Diff line number	Diff line
		/*
		* tps65910-gpio.c -- TI TPS6591x
		*
		* Copyright 2010 Texas Instruments Inc.
		*
		* Author: Graeme Gregory <gg@slimlogic.co.uk>
		* Author: Jorge Eduardo Candelaria jedu@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.
		*
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/errno.h>
		#include <linux/gpio.h>
		#include <linux/i2c.h>
		#include <linux/mfd/tps65910.h>

		static int tps65910_gpio_get(struct gpio_chip *gc, unsigned offset)
		{
		struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);
		uint8_t val;

		tps65910->read(tps65910, TPS65910_GPIO0, 1, &val);

		if (val & GPIO0_GPIO_STS_MASK)
		return 1;

		return 0;
		}

		static void tps65910_gpio_set(struct gpio_chip *gc, unsigned offset,
		int value)
		{
		struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);

		if (value)
		tps65910_set_bits(tps65910, TPS65910_GPIO0,
		GPIO0_GPIO_SET_MASK);
		else
		tps65910_clear_bits(tps65910, TPS65910_GPIO0,
		GPIO0_GPIO_SET_MASK);
		}

		static int tps65910_gpio_output(struct gpio_chip *gc, unsigned offset,
		int value)
		{
		struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);

		/* Set the initial value */
		tps65910_gpio_set(gc, 0, value);

		return tps65910_set_bits(tps65910, TPS65910_GPIO0, GPIO0_GPIO_CFG_MASK);
		}

		static int tps65910_gpio_input(struct gpio_chip *gc, unsigned offset)
		{
		struct tps65910 *tps65910 = container_of(gc, struct tps65910, gpio);

		return tps65910_clear_bits(tps65910, TPS65910_GPIO0,
		GPIO0_GPIO_CFG_MASK);
		}

		void tps65910_gpio_init(struct tps65910 *tps65910, int gpio_base)
		{
		int ret;

		if (!gpio_base)
		return;

		tps65910->gpio.owner = THIS_MODULE;
		tps65910->gpio.label = tps65910->i2c_client->name;
		tps65910->gpio.dev = tps65910->dev;
		tps65910->gpio.base = gpio_base;
		tps65910->gpio.ngpio = 1;
		tps65910->gpio.can_sleep = 1;

		tps65910->gpio.direction_input = tps65910_gpio_input;
		tps65910->gpio.direction_output = tps65910_gpio_output;
		tps65910->gpio.set = tps65910_gpio_set;
		tps65910->gpio.get = tps65910_gpio_get;

		ret = gpiochip_add(&tps65910->gpio);

		if (ret)
		dev_warn(tps65910->dev, "GPIO registration failed: %d\n", ret);
		}

drivers/mfd/tps65910.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -135,8 +135,13 @@ static int tps65910_i2c_probe(struct i2c_client *i2c,
		const struct i2c_device_id *id)
		{
		struct tps65910 *tps65910;
		struct tps65910_board *pmic_plat_data;
		int ret = 0;

		pmic_plat_data = dev_get_platdata(&i2c->dev);
		if (!pmic_plat_data)
		return -EINVAL;

		tps65910 = kzalloc(sizeof(struct tps65910), GFP_KERNEL);
		if (tps65910 == NULL)
		return -ENOMEM;
		@@ -154,6 +159,8 @@ static int tps65910_i2c_probe(struct i2c_client *i2c,
		if (ret < 0)
		goto err;

		tps65910_gpio_init(tps65910, pmic_plat_data->gpio_base);

		return ret;

		err:

include/linux/mfd/tps65910.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -714,6 +714,7 @@
		*/

		struct tps65910_board {
		int gpio_base;
		struct regulator_init_data *tps65910_pmic_init_data;
		};

		@@ -749,5 +750,6 @@ struct tps65910_platform_data {

		int tps65910_set_bits(struct tps65910 *tps65910, u8 reg, u8 mask);
		int tps65910_clear_bits(struct tps65910 *tps65910, u8 reg, u8 mask);
		void tps65910_gpio_init(struct tps65910 *tps65910, int gpio_base);

		#endif /* __LINUX_MFD_TPS65910_H */

Admin message