From 83545d836cf12a6381b530c5c7aeacf057f86aa9 Mon Sep 17 00:00:00 2001 From: Jorge Eduardo Candelaria Date: Mon, 16 May 2011 18:35:37 -0500 Subject: GPIO: TPS65910: Move driver to drivers/gpio/ The GPIO driver should reside in drivers/gpio/ for better organization. Signed-off-by: Jorge Eduardo Candelaria Acked-by: Grant Likely Signed-off-by: Liam Girdwood --- drivers/gpio/Kconfig | 7 ++++ drivers/gpio/Makefile | 1 + drivers/gpio/tps65910-gpio.c | 91 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 99 insertions(+) create mode 100644 drivers/gpio/tps65910-gpio.c (limited to 'drivers/gpio') diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index b57ec09..d213646 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -424,4 +424,11 @@ config AB8500_GPIO depends on AB8500_CORE && BROKEN help Select this to enable the AB8500 IC GPIO driver + +config GPIO_TPS65910 + bool "TPS65910 GPIO" + depends on MFD_TPS65910 + help + Select this option to enable GPIO driver for the TPS65910 + chip family. endif diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index d92ce3a..6a3387a 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -40,3 +40,4 @@ obj-$(CONFIG_GPIO_SX150X) += sx150x.o obj-$(CONFIG_GPIO_VX855) += vx855_gpio.o obj-$(CONFIG_GPIO_ML_IOH) += ml_ioh_gpio.o obj-$(CONFIG_AB8500_GPIO) += ab8500-gpio.o +obj-$(CONFIG_GPIO_TPS65910) += tps65910-gpio.o diff --git a/drivers/gpio/tps65910-gpio.c b/drivers/gpio/tps65910-gpio.c new file mode 100644 index 0000000..f3ae376 --- /dev/null +++ b/drivers/gpio/tps65910-gpio.c @@ -0,0 +1,91 @@ +/* + * tps65910-gpio.c -- TI TPS6591x + * + * Copyright 2010 Texas Instruments Inc. + * + * Author: Graeme Gregory + * 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 +#include +#include +#include +#include +#include + +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); +} -- cgit v1.1