File leds-init-as-backlight-too.patch of Package kernel-adaptation-archos-gen9-mmc

diff --git a/drivers/leds/leds-omap-pwm.c b/drivers/leds/leds-omap-pwm.c
index 91f9048..1e8f92f 100644
--- a/drivers/leds/leds-omap-pwm.c
+++ b/drivers/leds/leds-omap-pwm.c
@@ -24,8 +24,10 @@
 #include <plat/dmtimer.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
+#include <linux/backlight.h>
 
 #define MAX_GPTIMER_ID		12
+#define CONFIG_BACKLIGHT_OMAP_PWM
 
 struct omap_pwm_led {
 	struct led_classdev cdev;
@@ -37,6 +39,11 @@ struct omap_pwm_led {
 	enum led_brightness brightness;
 };
 
+#ifdef CONFIG_BACKLIGHT_OMAP_PWM
+static struct platform_device * archos_backlight_device;
+static struct omap_pwm_led * archos_led_device;
+#endif // CONFIG_BACKLIGHT_OMAP_PWM
+
 static inline struct omap_pwm_led *pdev_to_omap_pwm_led(struct platform_device *pdev)
 {
 	return platform_get_drvdata(pdev);
@@ -311,6 +318,9 @@ static int omap_pwm_led_probe(struct platform_device *pdev)
 		return -EINVAL;
 
 	led = kzalloc(sizeof(struct omap_pwm_led), GFP_KERNEL);
+#ifdef CONFIG_BACKLIGHT_OMAP_PWM
+	archos_led_device = led;
+#endif
 	if (led == NULL) {
 		dev_err(&pdev->dev, "No memory for device\n");
 		return -ENOMEM;
@@ -395,7 +405,9 @@ static int omap_pwm_led_remove(struct platform_device *pdev)
 		omap_dm_timer_free(led->blink_timer);
 	omap_dm_timer_free(led->intensity_timer);
 	kfree(led);
-
+#ifdef CONFIG_BACKLIGHT_OMAP_PWM
+	archos_led_device = NULL;
+#endif
 	return 0;
 }
 
@@ -435,9 +447,58 @@ static struct platform_driver omap_pwm_led_driver = {
 	},
 };
 
+#ifdef CONFIG_BACKLIGHT_OMAP_PWM
+static int archos_backlight_get_brightness(struct backlight_device *b)
+{
+	pr_debug( "%s: %p %d.\n", __func__, b, b->props.brightness );
+	if( archos_led_device ){
+		b->props.brightness = archos_led_device->cdev.brightness;
+		return archos_led_device->cdev.brightness;
+	}
+	return b->props.brightness;
+}
+
+
+static int archos_backlight_update_status(struct backlight_device *b)
+{
+	int brightness;
+	pr_debug( "%s: %p %d pwm_led_driver %p.\n", __func__, b, b->props.brightness, &omap_pwm_led_driver );
+	if( b->props.brightness < 20 ){
+		brightness = 20;
+	} else {
+		brightness = b->props.brightness;
+	}
+	if( archos_led_device ){
+		omap_pwm_led_set( &(archos_led_device->cdev), brightness );
+		archos_led_device->cdev.brightness = brightness;
+		archos_led_device->brightness = brightness;
+	}
+    return b->props.brightness;
+}
+
+static const struct backlight_ops archos_backlight_ops = {
+	.get_brightness = archos_backlight_get_brightness,
+	.update_status  = archos_backlight_update_status,
+};
+#endif
+
 static int __init omap_pwm_led_init(void)
 {
+#ifdef CONFIG_BACKLIGHT_OMAP_PWM
+	int ret;
+	struct backlight_properties props;
+	ret = platform_driver_register(&omap_pwm_led_driver);
+	memset(&props, 0, sizeof(struct backlight_properties));
+	props.type = BACKLIGHT_PLATFORM;
+	props.max_brightness = LED_FULL;
+	archos_backlight_device = backlight_device_register( "archos-backlight", NULL, NULL, &archos_backlight_ops, &props );
+	if (IS_ERR(archos_backlight_device)){
+		pr_warn("%s: Error, backlight_device_register archos-backlight failed.\n", __func__ );
+	}
+	return ret;
+#else
 	return platform_driver_register(&omap_pwm_led_driver);
+#endif // CONFIG_BACKLIGHT_OMAP_PWM
 }
 
 static void __exit omap_pwm_led_exit(void)