From: Sam Ravnborg <sam@xxxxxxxxxxxx>
The atmel_lcdfb had code to save/restore power state.
This is not needed so drop it.
Introduce backlight_is_brightness() to make logic simpler.
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Cc: Ludovic Desroches <ludovic.desroches@xxxxxxxxxxxxx>
Cc: linux-fbdev@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
---
drivers/video/fbdev/atmel_lcdfb.c | 24 +++---------------------
1 file changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c
index 1fc8de4ecbeb..d297b3892637 100644
--- a/drivers/video/fbdev/atmel_lcdfb.c
+++ b/drivers/video/fbdev/atmel_lcdfb.c
@@ -49,7 +49,6 @@ struct atmel_lcdfb_info {
struct clk *lcdc_clk;
struct backlight_device *backlight;
- u8 bl_power;
u8 saved_lcdcon;
u32 pseudo_palette[16];
@@ -109,32 +108,18 @@ static u32 contrast_ctr = ATMEL_LCDC_PS_DIV8
static int atmel_bl_update_status(struct backlight_device *bl)
{
struct atmel_lcdfb_info *sinfo = bl_get_data(bl);
- int power = sinfo->bl_power;
- int brightness = bl->props.brightness;
+ int brightness;
- /* REVISIT there may be a meaningful difference between
- * fb_blank and power ... there seem to be some cases
- * this doesn't handle correctly.
- */
- if (bl->props.fb_blank != sinfo->bl_power)
- power = bl->props.fb_blank;
- else if (bl->props.power != sinfo->bl_power)
- power = bl->props.power;
-
- if (brightness < 0 && power == FB_BLANK_UNBLANK)
- brightness = lcdc_readl(sinfo, ATMEL_LCDC_CONTRAST_VAL);
- else if (power != FB_BLANK_UNBLANK)
- brightness = 0;
+ brightness = backlight_get_brightness(bl);
lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, brightness);
+
if (contrast_ctr & ATMEL_LCDC_POL_POSITIVE)
lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR,
brightness ? contrast_ctr : 0);
else
lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, contrast_ctr);
- bl->props.fb_blank = bl->props.power = sinfo->bl_power = power;
-
return 0;
}
@@ -155,8 +140,6 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
struct backlight_properties props;
struct backlight_device *bl;
- sinfo->bl_power = FB_BLANK_UNBLANK;
-
if (sinfo->backlight)
return;
@@ -173,7 +156,6 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
sinfo->backlight = bl;
bl->props.power = FB_BLANK_UNBLANK;
- bl->props.fb_blank = FB_BLANK_UNBLANK;
bl->props.brightness = atmel_bl_get_brightness(bl);
}
--
2.34.1
