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authorRichard Purdie <rpurdie@rpsys.net>2007-02-10 15:04:08 +0000
committerRichard Purdie <rpurdie@rpsys.net>2007-02-20 09:26:40 +0000
commit321709c5994f952b78d567fd7083dbebbdc381b7 (patch)
treedf237c216e8bab6ce5c14d5797a796d4bf889a92 /drivers/video/backlight/backlight.c
parente0e34ef7f02915cfe50e501e9f32c24217177a96 (diff)
backlight: Clean up pmac_backlight handling
Move the setting/unsetting of pmac_backlight into the backlight core instead of doing it in each driver. Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Diffstat (limited to 'drivers/video/backlight/backlight.c')
-rw-r--r--drivers/video/backlight/backlight.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 5490b2ae5134..822a373d3346 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -14,6 +14,9 @@
#include <linux/err.h>
#include <linux/fb.h>
+#ifdef CONFIG_PMAC_BACKLIGHT
+#include <asm/backlight.h>
+#endif
#if defined(CONFIG_FB) || (defined(CONFIG_FB_MODULE) && \
defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE))
@@ -262,6 +265,13 @@ struct backlight_device *backlight_device_register(const char *name,
}
}
+#ifdef CONFIG_PMAC_BACKLIGHT
+ mutex_lock(&pmac_backlight_mutex);
+ if (!pmac_backlight)
+ pmac_backlight = new_bd;
+ mutex_unlock(&pmac_backlight_mutex);
+#endif
+
return new_bd;
}
EXPORT_SYMBOL(backlight_device_register);
@@ -281,6 +291,13 @@ void backlight_device_unregister(struct backlight_device *bd)
pr_debug("backlight_device_unregister: name=%s\n", bd->class_dev.class_id);
+#ifdef CONFIG_PMAC_BACKLIGHT
+ mutex_lock(&pmac_backlight_mutex);
+ if (pmac_backlight == bd)
+ pmac_backlight = NULL;
+ mutex_unlock(&pmac_backlight_mutex);
+#endif
+
for (i = 0; i < ARRAY_SIZE(bl_class_device_attributes); i++)
class_device_remove_file(&bd->class_dev,
&bl_class_device_attributes[i]);