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| author | Sylwester Nawrocki <sylvester.nawrocki@gmail.com> | 2012-06-30 20:30:26 +0800 |
|---|---|---|
| committer | Bryan Wu <bryan.wu@canonical.com> | 2012-07-24 07:52:36 +0800 |
| commit | 7d84f66f22cb511b7cb7602b2a9dab20c8906da7 (patch) | |
| tree | 57aad93f06c63221b82ddf94bccfd8ad536ec58e /drivers/leds/leds-s3c24xx.c | |
| parent | 7e97b58133b7cddf3be80660300bb2c77c514c6f (diff) | |
| download | lwn-7d84f66f22cb511b7cb7602b2a9dab20c8906da7.tar.gz lwn-7d84f66f22cb511b7cb7602b2a9dab20c8906da7.zip | |
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/leds-s3c24xx.c')
| -rw-r--r-- | drivers/leds/leds-s3c24xx.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/drivers/leds/leds-s3c24xx.c b/drivers/leds/leds-s3c24xx.c index b816ccb9adf4..e1206407616d 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 */ |