diff options
Diffstat (limited to 'recipes/linux/linux/acern30/s3c2410_lcd-pm.c')
| -rw-r--r-- | recipes/linux/linux/acern30/s3c2410_lcd-pm.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/recipes/linux/linux/acern30/s3c2410_lcd-pm.c b/recipes/linux/linux/acern30/s3c2410_lcd-pm.c new file mode 100644 index 0000000000..304baf385c --- /dev/null +++ b/recipes/linux/linux/acern30/s3c2410_lcd-pm.c @@ -0,0 +1,80 @@ +Index: linux-2.6.14/drivers/video/backlight/s3c2410_lcd.c +=================================================================== +--- linux-2.6.14.orig/drivers/video/backlight/s3c2410_lcd.c ++++ linux-2.6.14/drivers/video/backlight/s3c2410_lcd.c +@@ -248,10 +248,75 @@ static int s3c2410bl_remove(struct devic + + } + ++#ifdef CONFIG_PM ++ ++static int s3c2410bl_suspend(struct device *dev, pm_message_t state) ++{ ++ struct s3c2410_bl_mach_info *info = ++ (struct s3c2410_bl_mach_info *)dev->platform_data; ++ ++ if (info) { ++ if (info->backlight_power) ++ info->backlight_power(0); ++ if (info->lcd_power) ++ info->lcd_power(0); ++ } ++ ++ return 0; ++} ++ ++static int s3c2410bl_resume(struct device *dev) ++{ ++ struct s3c2410_bl_mach_info *info = ++ (struct s3c2410_bl_mach_info *)dev->platform_data; ++ ++ if (info) { ++ if (info->lcd_power) { ++ switch(info->lcd_power_value) { ++ case FB_BLANK_NORMAL: ++ case FB_BLANK_POWERDOWN: ++ info->lcd_power(0); ++ break; ++ default: ++ case FB_BLANK_VSYNC_SUSPEND: ++ case FB_BLANK_HSYNC_SUSPEND: ++ case FB_BLANK_UNBLANK: ++ info->lcd_power(1); ++ break; ++ } ++ } ++ if (info->backlight_power) { ++ switch(info->backlight_power_value) { ++ case FB_BLANK_NORMAL: ++ case FB_BLANK_VSYNC_SUSPEND: ++ case FB_BLANK_HSYNC_SUSPEND: ++ case FB_BLANK_POWERDOWN: ++ info->backlight_power(0); ++ break; ++ default: ++ case FB_BLANK_UNBLANK: ++ info->backlight_power(1); ++ break; ++ } ++ } ++ if (info->set_brightness) ++ info->set_brightness(info->brightness_value); ++ } ++ ++ return 0; ++} ++ ++#else ++#define s3c2410bl_suspend NULL ++#define s3c2410bl_resume NULL ++#endif ++ + static struct device_driver s3c2410bl_driver = { + .name = "s3c2410-bl", + .bus = &platform_bus_type, + .probe = s3c2410bl_probe, ++ .suspend = s3c2410bl_suspend, ++ .resume = s3c2410bl_resume, + .remove = s3c2410bl_remove, + }; + |