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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>
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7e97b58133
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1 changed files with 20 additions and 14 deletions
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@ -45,17 +45,19 @@ static void s3c24xx_led_set(struct led_classdev *led_cdev,
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{
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struct s3c24xx_gpio_led *led = to_gpio(led_cdev);
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struct s3c24xx_led_platdata *pd = led->pdata;
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int state = (value ? 1 : 0) ^ (pd->flags & S3C24XX_LEDF_ACTLOW);
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/* there will be a short delay between setting the output and
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* going from output to input when using tristate. */
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s3c2410_gpio_setpin(pd->gpio, (value ? 1 : 0) ^
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(pd->flags & S3C24XX_LEDF_ACTLOW));
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if (pd->flags & S3C24XX_LEDF_TRISTATE)
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s3c2410_gpio_cfgpin(pd->gpio,
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value ? S3C2410_GPIO_OUTPUT : S3C2410_GPIO_INPUT);
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gpio_set_value(pd->gpio, state);
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if (pd->flags & S3C24XX_LEDF_TRISTATE) {
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if (value)
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gpio_direction_output(pd->gpio, state);
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else
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gpio_direction_input(pd->gpio);
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}
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}
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static int s3c24xx_led_remove(struct platform_device *dev)
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@ -63,6 +65,7 @@ static int s3c24xx_led_remove(struct platform_device *dev)
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struct s3c24xx_gpio_led *led = pdev_to_gpio(dev);
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led_classdev_unregister(&led->cdev);
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gpio_free(led->pdata->gpio);
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return 0;
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}
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@ -89,16 +92,19 @@ static int s3c24xx_led_probe(struct platform_device *dev)
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led->pdata = pdata;
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ret = gpio_request(pdata->gpio, "S3C24XX_LED");
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if (ret < 0)
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return ret;
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/* no point in having a pull-up if we are always driving */
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if (pdata->flags & S3C24XX_LEDF_TRISTATE) {
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s3c2410_gpio_setpin(pdata->gpio, 0);
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s3c2410_gpio_cfgpin(pdata->gpio, S3C2410_GPIO_INPUT);
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} else {
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s3c2410_gpio_pullup(pdata->gpio, 0);
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s3c2410_gpio_setpin(pdata->gpio, 0);
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s3c2410_gpio_cfgpin(pdata->gpio, S3C2410_GPIO_OUTPUT);
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}
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s3c_gpio_setpull(pdata->gpio, S3C_GPIO_PULL_NONE);
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if (pdata->flags & S3C24XX_LEDF_TRISTATE)
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gpio_direction_input(pdata->gpio);
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else
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gpio_direction_output(pdata->gpio,
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pdata->flags & S3C24XX_LEDF_ACTLOW ? 1 : 0);
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/* register our new led device */
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