[PATCH v5 2/4] leds: core: add color LED sysfs extension

[PATCH v5 2/4] leds: core: add color LED sysfs extension

[Heiner Kallweit]

Extend brightness sysfs property handling to deal with monochrome
and color mode as well.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
v2:
- split from patch 1
v3:
- moved one change (led_is_off) to patch 1
v4:
- changed printf format string to %#.6x
v5:
- no changes
---
 drivers/leds/led-class.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 007a5b3..8a3748a 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -32,7 +32,10 @@ static ssize_t brightness_show(struct device *dev,
 	/* no lock needed for this */
 	led_update_brightness(led_cdev);
 
-	return sprintf(buf, "%u\n", led_cdev->brightness);
+	if (led_cdev->brightness > LED_FULL)
+		return sprintf(buf, "%#.6x\n", led_cdev->brightness);
+	else
+		return sprintf(buf, "%u\n", led_cdev->brightness);
 }
 
 static ssize_t brightness_store(struct device *dev,
@@ -49,7 +52,7 @@ static ssize_t brightness_store(struct device *dev,
 		goto unlock;
 	}
 
-	ret = kstrtoul(buf, 10, &state);
+	ret = kstrtoul(buf, 0, &state);
 	if (ret)
 		goto unlock;
 
-- 
2.7.1

Re: [PATCH v5 2/4] leds: core: add color LED sysfs extension

[Pavel Machek]

On Tue 2016-03-01 22:28:00, Heiner Kallweit wrote:
> Extend brightness sysfs property handling to deal with monochrome
> and color mode as well.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
> ---
> v2:
> - split from patch 1
> v3:
> - moved one change (led_is_off) to patch 1
> v4:
> - changed printf format string to %#.6x
> v5:
> - no changes
> ---
>  drivers/leds/led-class.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
> index 007a5b3..8a3748a 100644
> --- a/drivers/leds/led-class.c
> +++ b/drivers/leds/led-class.c
> @@ -32,7 +32,10 @@ static ssize_t brightness_show(struct device *dev,
>  	/* no lock needed for this */
>  	led_update_brightness(led_cdev);
>  
> -	return sprintf(buf, "%u\n", led_cdev->brightness);
> +	if (led_cdev->brightness > LED_FULL)
> +		return sprintf(buf, "%#.6x\n", led_cdev->brightness);
> +	else
> +		return sprintf(buf, "%u\n", led_cdev->brightness);
>  }
>  
>  static ssize_t brightness_store(struct device *dev,

No... I don't think you should change interface for existing file like
this.

								Pavel
-- 
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