backlight: Use backlight_get_brightness() throughout

Introduce the backlight_get_brightness() helper in all
video/backlight/* drivers. This simplifies the code and align the
implementation of the update_status() operation across the different
backlight drivers.

Some of the drivers gains a little extra functionality by the change
as they now respect the fb_blank() ioctl.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/video/backlight/88pm860x_bl.c

@@ -121,18 +121,7 @@ static int pm860x_backlight_set(struct backlight_device *bl, int brightness)
 
 static int pm860x_backlight_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.state & BL_CORE_SUSPENDED)
-		brightness = 0;
-
-	return pm860x_backlight_set(bl, brightness);
+	return pm860x_backlight_set(bl, backlight_get_brightness(bl));
 }
 
 static int pm860x_backlight_get_brightness(struct backlight_device *bl)

drivers/video/backlight/adp5520_bl.c

@@ -65,15 +65,7 @@ static int adp5520_bl_set(struct backlight_device *bl, int brightness)
 
 static int adp5520_bl_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	return adp5520_bl_set(bl, brightness);
+	return adp5520_bl_set(bl, backlight_get_brightness(bl));
 }
 
 static int adp5520_bl_get_brightness(struct backlight_device *bl)

drivers/video/backlight/adp8860_bl.c

@@ -361,15 +361,7 @@ static int adp8860_bl_set(struct backlight_device *bl, int brightness)
 
 static int adp8860_bl_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	return adp8860_bl_set(bl, brightness);
+	return adp8860_bl_set(bl, backlight_get_brightness(bl));
 }
 
 static int adp8860_bl_get_brightness(struct backlight_device *bl)

drivers/video/backlight/adp8870_bl.c

@@ -399,15 +399,7 @@ static int adp8870_bl_set(struct backlight_device *bl, int brightness)
 
 static int adp8870_bl_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	return adp8870_bl_set(bl, brightness);
+	return adp8870_bl_set(bl, backlight_get_brightness(bl));
 }
 
 static int adp8870_bl_get_brightness(struct backlight_device *bl)

drivers/video/backlight/bd6107.c

@@ -82,12 +82,7 @@ static int bd6107_write(struct bd6107 *bd, u8 reg, u8 data)
 static int bd6107_backlight_update_status(struct backlight_device *backlight)
 {
 	struct bd6107 *bd = bl_get_data(backlight);
-	int brightness = backlight->props.brightness;
-
-	if (backlight->props.power != FB_BLANK_UNBLANK ||
-	    backlight->props.fb_blank != FB_BLANK_UNBLANK ||
-	    backlight->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
-		brightness = 0;
+	int brightness = backlight_get_brightness(backlight);
 
 	if (brightness) {
 		bd6107_write(bd, BD6107_PORTSEL, BD6107_PORTSEL_LEDM(2) |

drivers/video/backlight/corgi_lcd.c

@@ -420,13 +420,7 @@ static int corgi_bl_set_intensity(struct corgi_lcd *lcd, int intensity)
 static int corgi_bl_update_status(struct backlight_device *bd)
 {
 	struct corgi_lcd *lcd = bl_get_data(bd);
-	int intensity = bd->props.brightness;
-
-	if (bd->props.power != FB_BLANK_UNBLANK)
-		intensity = 0;
-
-	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
-		intensity = 0;
+	int intensity = backlight_get_brightness(bd);
 
 	if (corgibl_flags & CORGIBL_SUSPENDED)
 		intensity = 0;

drivers/video/backlight/da903x_bl.c

@@ -77,18 +77,7 @@ static int da903x_backlight_set(struct backlight_device *bl, int brightness)
 
 static int da903x_backlight_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.state & BL_CORE_SUSPENDED)
-		brightness = 0;
-
-	return da903x_backlight_set(bl, brightness);
+	return da903x_backlight_set(bl, backlight_get_brightness(bl));
 }
 
 static int da903x_backlight_get_brightness(struct backlight_device *bl)

drivers/video/backlight/ep93xx_bl.c

@@ -36,13 +36,7 @@ static int ep93xxbl_set(struct backlight_device *bl, int brightness)
 
 static int ep93xxbl_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK ||
-	    bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	return ep93xxbl_set(bl, brightness);
+	return ep93xxbl_set(bl, backlight_get_brightness(bl));
 }
 
 static int ep93xxbl_get_brightness(struct backlight_device *bl)

drivers/video/backlight/hp680_bl.c

@@ -33,12 +33,8 @@ static void hp680bl_send_intensity(struct backlight_device *bd)
 {
 	unsigned long flags;
 	u16 v;
-	int intensity = bd->props.brightness;
+	int intensity = backlight_get_brightness(bd);
 
-	if (bd->props.power != FB_BLANK_UNBLANK)
-		intensity = 0;
-	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
-		intensity = 0;
 	if (hp680bl_suspended)
 		intensity = 0;
 

drivers/video/backlight/kb3886_bl.c

@@ -87,12 +87,8 @@ static const struct dmi_system_id kb3886bl_device_table[] __initconst = {
 
 static int kb3886bl_send_intensity(struct backlight_device *bd)
 {
-	int intensity = bd->props.brightness;
+	int intensity = backlight_get_brightness(bd);
 
-	if (bd->props.power != FB_BLANK_UNBLANK)
-		intensity = 0;
-	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
-		intensity = 0;
 	if (kb3886bl_flags & KB3886BL_SUSPENDED)
 		intensity = 0;
 

drivers/video/backlight/led_bl.c

@@ -54,12 +54,7 @@ static void led_bl_power_off(struct led_bl_data *priv)
 static int led_bl_update_status(struct backlight_device *bl)
 {
 	struct led_bl_data *priv = bl_get_data(bl);
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK ||
-	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
-	    bl->props.state & BL_CORE_FBBLANK)
-		brightness = 0;
+	int brightness = backlight_get_brightness(bl);
 
 	if (brightness > 0)
 		led_bl_set_brightness(priv, brightness);

drivers/video/backlight/lm3533_bl.c

@@ -39,14 +39,8 @@ static inline int lm3533_bl_get_ctrlbank_id(struct lm3533_bl *bl)
 static int lm3533_bl_update_status(struct backlight_device *bd)
 {
 	struct lm3533_bl *bl = bl_get_data(bd);
-	int brightness = bd->props.brightness;
 
-	if (bd->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	return lm3533_ctrlbank_set_brightness(&bl->cb, (u8)brightness);
+	return lm3533_ctrlbank_set_brightness(&bl->cb, backlight_get_brightness(bd));
 }
 
 static int lm3533_bl_get_brightness(struct backlight_device *bd)

drivers/video/backlight/locomolcd.c

@@ -111,12 +111,8 @@ static int current_intensity;
 
 static int locomolcd_set_intensity(struct backlight_device *bd)
 {
-	int intensity = bd->props.brightness;
+	int intensity = backlight_get_brightness(bd);
 
-	if (bd->props.power != FB_BLANK_UNBLANK)
-		intensity = 0;
-	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
-		intensity = 0;
 	if (locomolcd_flags & LOCOMOLCD_SUSPENDED)
 		intensity = 0;
 

drivers/video/backlight/lv5207lp.c

@@ -46,12 +46,7 @@ static int lv5207lp_write(struct lv5207lp *lv, u8 reg, u8 data)
 static int lv5207lp_backlight_update_status(struct backlight_device *backlight)
 {
 	struct lv5207lp *lv = bl_get_data(backlight);
-	int brightness = backlight->props.brightness;
-
-	if (backlight->props.power != FB_BLANK_UNBLANK ||
-	    backlight->props.fb_blank != FB_BLANK_UNBLANK ||
-	    backlight->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
-		brightness = 0;
+	int brightness = backlight_get_brightness(backlight);
 
 	if (brightness) {
 		lv5207lp_write(lv, LV5207LP_CTRL1,

drivers/video/backlight/max8925_bl.c

@@ -64,18 +64,7 @@ static int max8925_backlight_set(struct backlight_device *bl, int brightness)
 
 static int max8925_backlight_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.state & BL_CORE_SUSPENDED)
-		brightness = 0;
-
-	return max8925_backlight_set(bl, brightness);
+	return max8925_backlight_set(bl, backlight_get_brightness(bl));
 }
 
 static int max8925_backlight_get_brightness(struct backlight_device *bl)

drivers/video/backlight/pwm_bl.c

@@ -108,14 +108,9 @@ static int compute_duty_cycle(struct pwm_bl_data *pb, int brightness)
 static int pwm_backlight_update_status(struct backlight_device *bl)
 {
 	struct pwm_bl_data *pb = bl_get_data(bl);
-	int brightness = bl->props.brightness;
+	int brightness = backlight_get_brightness(bl);
 	struct pwm_state state;
 
-	if (bl->props.power != FB_BLANK_UNBLANK ||
-	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
-	    bl->props.state & BL_CORE_FBBLANK)
-		brightness = 0;
-
 	if (pb->notify)
 		brightness = pb->notify(pb->dev, brightness);
 

drivers/video/backlight/qcom-wled.c

@@ -433,14 +433,9 @@ static int wled5_ovp_delay(struct wled *wled)
 static int wled_update_status(struct backlight_device *bl)
 {
 	struct wled *wled = bl_get_data(bl);
-	u16 brightness = bl->props.brightness;
+	u16 brightness = backlight_get_brightness(bl);
 	int rc = 0;
 
-	if (bl->props.power != FB_BLANK_UNBLANK ||
-	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
-	    bl->props.state & BL_CORE_FBBLANK)
-		brightness = 0;
-
 	mutex_lock(&wled->lock);
 	if (brightness) {
 		rc = wled->wled_set_brightness(wled, brightness);

drivers/video/backlight/tps65217_bl.c

@@ -77,15 +77,7 @@ static int tps65217_bl_update_status(struct backlight_device *bl)
 {
 	struct tps65217_bl *tps65217_bl = bl_get_data(bl);
 	int rc;
-	int brightness = bl->props.brightness;
-
-	if (bl->props.state & BL_CORE_SUSPENDED)
-		brightness = 0;
-
-	if ((bl->props.power != FB_BLANK_UNBLANK) ||
-		(bl->props.fb_blank != FB_BLANK_UNBLANK))
-		/* framebuffer in low power mode or blanking active */
-		brightness = 0;
+	int brightness = backlight_get_brightness(bl);
 
 	if (brightness > 0) {
 		rc = tps65217_reg_write(tps65217_bl->tps,

drivers/video/backlight/wm831x_bl.c

@@ -91,18 +91,7 @@ static int wm831x_backlight_set(struct backlight_device *bl, int brightness)
 
 static int wm831x_backlight_update_status(struct backlight_device *bl)
 {
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (bl->props.state & BL_CORE_SUSPENDED)
-		brightness = 0;
-
-	return wm831x_backlight_set(bl, brightness);
+	return wm831x_backlight_set(bl, backlight_get_brightness(bl));
 }
 
 static int wm831x_backlight_get_brightness(struct backlight_device *bl)