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>

1 files changed, 37 insertions, 6 deletions

diff --git a/drivers/leds/leds-wrap.c b/drivers/leds/leds-wrap.c
index 5770cc36ec20..7ac61a7b56ad 100644
--- a/drivers/leds/leds-wrap.c
+++ b/drivers/leds/leds-wrap.c
@@ -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;