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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: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2011-11-16 10:24:39 +01:00
parent f812f0f53e
commit b4e3ac74d5
2 changed files with 22 additions and 1 deletions
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2
drivers/pinctrl/Kconfig
View File

@ -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

21
drivers/pinctrl/pinctrl-coh901.c
View File

@ -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,