redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

leds: Add power LED to the wrap driver 

The 3rd LED on this board is something like a power-led, it is on all the
time. With this change to the leds-wrap driver it is possible to use this
LED too.

Signed-off-by: Michael Loeffler <zvpunry@zvpunry.de>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
hifive-unleashed-5.1
Michael Loeffler 2008-01-13 23:20:52 +00:00 committed by Richard Purdie
parent 2b7f1b8c8f
commit f5506a2f71
1 changed files with 37 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/leds/leds-wrap.c
View File

@ -19,11 +19,21 @@
#include <linux/scx200_gpio.h>
#define DRVNAME "wrap-led"
#define WRAP_POWER_LED_GPIO 2
#define WRAP_ERROR_LED_GPIO 3
#define WRAP_EXTRA_LED_GPIO 18
#define WRAP_EXTRA_LED_GPIO 18
static struct platform_device *pdev;
static void wrap_power_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
if (value)
scx200_gpio_set_low(WRAP_POWER_LED_GPIO);
else
scx200_gpio_set_high(WRAP_POWER_LED_GPIO);
}
static void wrap_error_led_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
@ -42,6 +52,11 @@ static void wrap_extra_led_set(struct led_classdev *led_cdev,
scx200_gpio_set_high(WRAP_EXTRA_LED_GPIO);
}
static struct led_classdev wrap_power_led = {
.name = "wrap::power",
.brightness_set = wrap_power_led_set,
};
static struct led_classdev wrap_error_led = {
.name = "wrap::error",
.brightness_set = wrap_error_led_set,
@ -56,6 +71,7 @@ static struct led_classdev wrap_extra_led = {
static int wrap_led_suspend(struct platform_device *dev,
pm_message_t state)
{
led_classdev_suspend(&wrap_power_led);
led_classdev_suspend(&wrap_error_led);
led_classdev_suspend(&wrap_extra_led);
return 0;
@ -63,6 +79,7 @@ static int wrap_led_suspend(struct platform_device *dev,
static int wrap_led_resume(struct platform_device *dev)
{
led_classdev_resume(&wrap_power_led);
led_classdev_resume(&wrap_error_led);
led_classdev_resume(&wrap_extra_led);
return 0;
@ -76,17 +93,31 @@ static int wrap_led_probe(struct platform_device *pdev)
{
int ret;
ret = led_classdev_register(&pdev->dev, &wrap_power_led);
if (ret < 0)
return ret;
ret = led_classdev_register(&pdev->dev, &wrap_error_led);
if (ret == 0) {
ret = led_classdev_register(&pdev->dev, &wrap_extra_led);
if (ret < 0)
led_classdev_unregister(&wrap_error_led);
}
if (ret < 0)
goto err1;
ret = led_classdev_register(&pdev->dev, &wrap_extra_led);
if (ret < 0)
goto err2;
return ret;
err2:
led_classdev_unregister(&wrap_error_led);
err1:
led_classdev_unregister(&wrap_power_led);
return ret;
}
static int wrap_led_remove(struct platform_device *pdev)
{
led_classdev_unregister(&wrap_power_led);
led_classdev_unregister(&wrap_error_led);
led_classdev_unregister(&wrap_extra_led);
return 0;