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authorSylwester Nawrocki <sylvester.nawrocki@gmail.com>2012-06-30 20:30:26 +0800
committerBryan Wu <bryan.wu@canonical.com>2012-07-24 07:52:36 +0800
commit7d84f66f22cb511b7cb7602b2a9dab20c8906da7 (patch)
tree57aad93f06c63221b82ddf94bccfd8ad536ec58e /drivers/leds
parent7e97b58133b7cddf3be80660300bb2c77c514c6f (diff)
leds: Convert S3C24XX LED driver to gpiolib API
The s3c2410_gpio* calls are obsolete and have been scheduled for removal since several kernel releases. Remove them and use common gpiolib API instead. This patch also adds gpio_request/gpio_free call for API corectness. It is a prerequisite for removal of the S3C24XX SoC specific arch/arm/plat-samsung/include/gpio-fns.h header. Tested on Micro2440-SDK. Cc: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Diffstat (limited to 'drivers/leds')
-rw-r--r--drivers/leds/leds-s3c24xx.c34
1 files changed, 20 insertions, 14 deletions
diff --git a/drivers/leds/leds-s3c24xx.c b/drivers/leds/leds-s3c24xx.c
index b816ccb9adf..e1206407616 100644
--- a/drivers/leds/leds-s3c24xx.c
+++ b/drivers/leds/leds-s3c24xx.c
@@ -45,17 +45,19 @@ static void s3c24xx_led_set(struct led_classdev *led_cdev,
{
struct s3c24xx_gpio_led *led = to_gpio(led_cdev);
struct s3c24xx_led_platdata *pd = led->pdata;
+ int state = (value ? 1 : 0) ^ (pd->flags & S3C24XX_LEDF_ACTLOW);
/* there will be a short delay between setting the output and
* going from output to input when using tristate. */
- s3c2410_gpio_setpin(pd->gpio, (value ? 1 : 0) ^
- (pd->flags & S3C24XX_LEDF_ACTLOW));
-
- if (pd->flags & S3C24XX_LEDF_TRISTATE)
- s3c2410_gpio_cfgpin(pd->gpio,
- value ? S3C2410_GPIO_OUTPUT : S3C2410_GPIO_INPUT);
+ gpio_set_value(pd->gpio, state);
+ if (pd->flags & S3C24XX_LEDF_TRISTATE) {
+ if (value)
+ gpio_direction_output(pd->gpio, state);
+ else
+ gpio_direction_input(pd->gpio);
+ }
}
static int s3c24xx_led_remove(struct platform_device *dev)
@@ -63,6 +65,7 @@ static int s3c24xx_led_remove(struct platform_device *dev)
struct s3c24xx_gpio_led *led = pdev_to_gpio(dev);
led_classdev_unregister(&led->cdev);
+ gpio_free(led->pdata->gpio);
return 0;
}
@@ -89,16 +92,19 @@ static int s3c24xx_led_probe(struct platform_device *dev)
led->pdata = pdata;
+ ret = gpio_request(pdata->gpio, "S3C24XX_LED");
+ if (ret < 0)
+ return ret;
+
/* no point in having a pull-up if we are always driving */
- if (pdata->flags & S3C24XX_LEDF_TRISTATE) {
- s3c2410_gpio_setpin(pdata->gpio, 0);
- s3c2410_gpio_cfgpin(pdata->gpio, S3C2410_GPIO_INPUT);
- } else {
- s3c2410_gpio_pullup(pdata->gpio, 0);
- s3c2410_gpio_setpin(pdata->gpio, 0);
- s3c2410_gpio_cfgpin(pdata->gpio, S3C2410_GPIO_OUTPUT);
- }
+ s3c_gpio_setpull(pdata->gpio, S3C_GPIO_PULL_NONE);
+
+ if (pdata->flags & S3C24XX_LEDF_TRISTATE)
+ gpio_direction_input(pdata->gpio);
+ else
+ gpio_direction_output(pdata->gpio,
+ pdata->flags & S3C24XX_LEDF_ACTLOW ? 1 : 0);
/* register our new led device */