Merge branches 'release', 'button-sysfs', 'misc', 'mismatch', 'randconfig' and 'toshi...

[sfrench/cifs-2.6.git] / drivers / macintosh / via-pmu-backlight.c

diff --git a/drivers/macintosh/via-pmu-backlight.c b/drivers/macintosh/via-pmu-backlight.c
index 7e27071746e4582c54ae6b622b2160f36782778e..a348bb0791d37b764a2e61ffe55bacd57a12e182 100644 (file)
--- a/drivers/macintosh/via-pmu-backlight.c
+++ b/drivers/macintosh/via-pmu-backlight.c
@@ -17,12 +17,12 @@
 
 static struct backlight_ops pmu_backlight_data;
 static DEFINE_SPINLOCK(pmu_backlight_lock);
-static int sleeping;
+static int sleeping, uses_pmu_bl;
 static u8 bl_curve[FB_BACKLIGHT_LEVELS];
 
 static void pmu_backlight_init_curve(u8 off, u8 min, u8 max)
 {
-       unsigned int i, flat, count, range = (max - min);
+       int i, flat, count, range = (max - min);
 
        bl_curve[0] = off;
 
@@ -68,17 +68,11 @@ static int pmu_backlight_get_level_brightness(int level)
        return pmulevel;
 }
 
-static int pmu_backlight_update_status(struct backlight_device *bd)
+static int __pmu_backlight_update_status(struct backlight_device *bd)
 {
        struct adb_request req;
-       unsigned long flags;
        int level = bd->props.brightness;
 
-       spin_lock_irqsave(&pmu_backlight_lock, flags);
-
-       /* Don't update brightness when sleeping */
-       if (sleeping)
-               goto out;
 
        if (bd->props.power != FB_BLANK_UNBLANK ||
            bd->props.fb_blank != FB_BLANK_UNBLANK)
@@ -99,12 +93,23 @@ static int pmu_backlight_update_status(struct backlight_device *bd)
                pmu_wait_complete(&req);
        }
 
-out:
-       spin_unlock_irqrestore(&pmu_backlight_lock, flags);
-
        return 0;
 }
 
+static int pmu_backlight_update_status(struct backlight_device *bd)
+{
+       unsigned long flags;
+       int rc = 0;
+
+       spin_lock_irqsave(&pmu_backlight_lock, flags);
+       /* Don't update brightness when sleeping */
+       if (!sleeping)
+               rc = __pmu_backlight_update_status(bd);
+       spin_unlock_irqrestore(&pmu_backlight_lock, flags);
+       return rc;
+}
+
+
 static int pmu_backlight_get_brightness(struct backlight_device *bd)
 {
        return bd->props.brightness;
@@ -123,6 +128,16 @@ void pmu_backlight_set_sleep(int sleep)
 
        spin_lock_irqsave(&pmu_backlight_lock, flags);
        sleeping = sleep;
+       if (pmac_backlight && uses_pmu_bl) {
+               if (sleep) {
+                       struct adb_request req;
+
+                       pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
+                                   PMU_POW_BACKLIGHT | PMU_POW_OFF);
+                       pmu_wait_complete(&req);
+               } else
+                       __pmu_backlight_update_status(pmac_backlight);
+       }
        spin_unlock_irqrestore(&pmu_backlight_lock, flags);
 }
 #endif /* CONFIG_PM */
@@ -148,9 +163,10 @@ void __init pmu_backlight_init()
 
        bd = backlight_device_register(name, NULL, NULL, &pmu_backlight_data);
        if (IS_ERR(bd)) {
-               printk("pmubl: Backlight registration failed\n");
-               goto error;
+               printk(KERN_ERR "PMU Backlight registration failed\n");
+               return;
        }
+       uses_pmu_bl = 1;
        bd->props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
        pmu_backlight_init_curve(0x7F, 0x46, 0x0E);
 
@@ -171,10 +187,5 @@ void __init pmu_backlight_init()
        bd->props.power = FB_BLANK_UNBLANK;
        backlight_update_status(bd);
 
-       printk("pmubl: Backlight initialized (%s)\n", name);
-
-       return;
-
-error:
-       return;
+       printk(KERN_INFO "PMU Backlight initialized (%s)\n", name);
 }