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Commit b4e3ac74 authored by Linus Walleij's avatar Linus Walleij
Browse files

pinctrl/coh901: driver to request its pins 



This makes the COH 901 driver request muxing of its GPIO pins
from the pinmux-u300 driver using the standard API calls.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent f812f0f5

drivers/pinctrl/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -32,7 +32,7 @@ config PINMUX_U300 


config PINCTRL_COH901

	bool "ST-Ericsson U300 COH 901 335/571 GPIO"

	depends on GPIOLIB && ARCH_U300

	depends on GPIOLIB && ARCH_U300 && PINMUX_U300

	help

	  Say yes here to support GPIO interface on ST-Ericsson U300.

	  The names of the two IP block variants supported are

drivers/pinctrl/pinctrl-coh901.c

+21 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ 
#include <linux/gpio.h>

#include <linux/list.h>

#include <linux/slab.h>

#include <linux/pinctrl/pinmux.h>

#include <mach/gpio-u300.h>



/*
@@ -351,6 +352,24 @@ static inline struct u300_gpio *to_u300_gpio(struct gpio_chip *chip) 
	return container_of(chip, struct u300_gpio, chip);

}



static int u300_gpio_request(struct gpio_chip *chip, unsigned offset)

{

	/*

	 * Map back to global GPIO space and request muxing, the direction

	 * parameter does not matter for this controller.

	 */

	int gpio = chip->base + offset;



	return pinmux_request_gpio(gpio);

}



static void u300_gpio_free(struct gpio_chip *chip, unsigned offset)

{

	int gpio = chip->base + offset;



	pinmux_free_gpio(gpio);

}



static int u300_gpio_get(struct gpio_chip *chip, unsigned offset)

{

	struct u300_gpio *gpio = to_u300_gpio(chip);
@@ -483,6 +502,8 @@ static int u300_gpio_config(struct gpio_chip *chip, unsigned offset, 
static struct gpio_chip u300_gpio_chip = {

	.label			= "u300-gpio-chip",

	.owner			= THIS_MODULE,

	.request		= u300_gpio_request,

	.free			= u300_gpio_free,

	.get			= u300_gpio_get,

	.set			= u300_gpio_set,

	.direction_input	= u300_gpio_direction_input,