Re: [PATCH v2 16/16] backlight: use backlight_is_blank() in all backlight drivers

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On Sun, May 17, 2020 at 09:01:39PM +0200, Sam Ravnborg wrote:
> Replaces the open-coded checks of the state etc.,
> with the backlight_is_blank() helper.
> This increases readability of the code and align
> the functionality across the drivers.
> 
> v2:
>   - Fixed so changelog is readable
> 
> Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> Cc: Lee Jones <lee.jones@xxxxxxxxxx>
> Cc: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
> Cc: Jingoo Han <jingoohan1@xxxxxxxxx>
> Cc: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
> Cc: Support Opensource <support.opensource@xxxxxxxxxxx>
> Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
> Cc: "Uwe Kleine-König" <u.kleine-koenig@xxxxxxxxxxxxxx>
> Cc: Andy Gross <agross@xxxxxxxxxx>
> Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> Cc: linux-pwm@xxxxxxxxxxxxxxx
> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> Cc: patches@xxxxxxxxxxxxxxxxxxxxx

Reviewed-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>


> ---
>  drivers/video/backlight/88pm860x_bl.c    |  8 +-------
>  drivers/video/backlight/adp5520_bl.c     |  5 +----
>  drivers/video/backlight/adp8860_bl.c     |  5 +----
>  drivers/video/backlight/adp8870_bl.c     |  5 +----
>  drivers/video/backlight/as3711_bl.c      |  8 +++-----
>  drivers/video/backlight/bd6107.c         |  4 +---
>  drivers/video/backlight/corgi_lcd.c      |  5 +----
>  drivers/video/backlight/cr_bllcd.c       | 22 +++++++---------------
>  drivers/video/backlight/da903x_bl.c      |  8 +-------
>  drivers/video/backlight/ep93xx_bl.c      |  3 +--
>  drivers/video/backlight/gpio_backlight.c |  4 +---
>  drivers/video/backlight/hp680_bl.c       |  4 +---
>  drivers/video/backlight/jornada720_bl.c  |  2 +-
>  drivers/video/backlight/kb3886_bl.c      |  4 +---
>  drivers/video/backlight/led_bl.c         |  4 +---
>  drivers/video/backlight/lm3533_bl.c      |  4 +---
>  drivers/video/backlight/locomolcd.c      |  4 +---
>  drivers/video/backlight/lv5207lp.c       |  4 +---
>  drivers/video/backlight/max8925_bl.c     |  8 +-------
>  drivers/video/backlight/pwm_bl.c         |  4 +---
>  drivers/video/backlight/qcom-wled.c      |  4 +---
>  drivers/video/backlight/tps65217_bl.c    |  4 +---
>  drivers/video/backlight/wm831x_bl.c      |  8 +-------
>  23 files changed, 31 insertions(+), 100 deletions(-)
> 
> diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c
> index 20d96a5ac384..162c83ab0f5a 100644
> --- a/drivers/video/backlight/88pm860x_bl.c
> +++ b/drivers/video/backlight/88pm860x_bl.c
> @@ -123,13 +123,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return pm860x_backlight_set(bl, brightness);
> diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
> index 0f63f76723a5..d817b0d95c9d 100644
> --- a/drivers/video/backlight/adp5520_bl.c
> +++ b/drivers/video/backlight/adp5520_bl.c
> @@ -67,10 +67,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return adp5520_bl_set(bl, brightness);
> diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
> index 19968104fc47..a0ce2a3701fa 100644
> --- a/drivers/video/backlight/adp8860_bl.c
> +++ b/drivers/video/backlight/adp8860_bl.c
> @@ -363,10 +363,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return adp8860_bl_set(bl, brightness);
> diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
> index 4c0032010cfe..ae4269fdb189 100644
> --- a/drivers/video/backlight/adp8870_bl.c
> +++ b/drivers/video/backlight/adp8870_bl.c
> @@ -401,10 +401,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return adp8870_bl_set(bl, brightness);
> diff --git a/drivers/video/backlight/as3711_bl.c b/drivers/video/backlight/as3711_bl.c
> index 33f0f0f2e8b3..7fa76008c7bf 100644
> --- a/drivers/video/backlight/as3711_bl.c
> +++ b/drivers/video/backlight/as3711_bl.c
> @@ -107,13 +107,11 @@ static int as3711_bl_update_status(struct backlight_device *bl)
>  	int brightness = bl->props.brightness;
>  	int ret = 0;
>  
> -	dev_dbg(&bl->dev, "%s(): brightness %u, pwr %x, blank %x, state %x\n",
> +	dev_dbg(&bl->dev, "%s(): brightness %u, pwr %x, state %x\n",
>  		__func__, bl->props.brightness, bl->props.power,
> -		bl->props.fb_blank, bl->props.state);
> +		bl->props.state);
>  
> -	if (bl->props.power != FB_BLANK_UNBLANK ||
> -	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
> -	    bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	if (data->type == AS3711_BL_SU1) {
> diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c
> index d5d5fb457e78..f6a5c1dba3bc 100644
> --- a/drivers/video/backlight/bd6107.c
> +++ b/drivers/video/backlight/bd6107.c
> @@ -84,9 +84,7 @@ 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))
> +	if (backlight_is_blank(backlight))
>  		brightness = 0;
>  
>  	if (brightness) {
> diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c
> index 25ef0cbd7583..c9adf4e26355 100644
> --- a/drivers/video/backlight/corgi_lcd.c
> +++ b/drivers/video/backlight/corgi_lcd.c
> @@ -422,10 +422,7 @@ 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)
> +	if (backlight_is_blank(bd))
>  		intensity = 0;
>  
>  	if (corgibl_flags & CORGIBL_SUSPENDED)
> diff --git a/drivers/video/backlight/cr_bllcd.c b/drivers/video/backlight/cr_bllcd.c
> index 4624b7b7c6a6..d5ab7675f55c 100644
> --- a/drivers/video/backlight/cr_bllcd.c
> +++ b/drivers/video/backlight/cr_bllcd.c
> @@ -59,26 +59,18 @@ struct cr_panel {
>  
>  static int cr_backlight_set_intensity(struct backlight_device *bd)
>  {
> -	int intensity = bd->props.brightness;
>  	u32 addr = gpio_bar + CRVML_PANEL_PORT;
>  	u32 cur = inl(addr);
>  
> -	if (bd->props.power == FB_BLANK_UNBLANK)
> -		intensity = FB_BLANK_UNBLANK;
> -	if (bd->props.fb_blank == FB_BLANK_UNBLANK)
> -		intensity = FB_BLANK_UNBLANK;
> -	if (bd->props.power == FB_BLANK_POWERDOWN)
> -		intensity = FB_BLANK_POWERDOWN;
> -	if (bd->props.fb_blank == FB_BLANK_POWERDOWN)
> -		intensity = FB_BLANK_POWERDOWN;
> -
> -	if (intensity == FB_BLANK_UNBLANK) { /* FULL ON */
> -		cur &= ~CRVML_BACKLIGHT_OFF;
> -		outl(cur, addr);
> -	} else if (intensity == FB_BLANK_POWERDOWN) { /* OFF */
> +	if (backlight_is_blank(bd)) {
> +		/* OFF */
>  		cur |= CRVML_BACKLIGHT_OFF;
>  		outl(cur, addr);
> -	} /* anything else, don't bother */
> +	} else {
> +		/* FULL ON */
> +		cur &= ~CRVML_BACKLIGHT_OFF;
> +		outl(cur, addr);
> +	}
>  
>  	return 0;
>  }
> diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c
> index 62540e4bdedb..ca351badfdcf 100644
> --- a/drivers/video/backlight/da903x_bl.c
> +++ b/drivers/video/backlight/da903x_bl.c
> @@ -79,13 +79,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return da903x_backlight_set(bl, brightness);
> diff --git a/drivers/video/backlight/ep93xx_bl.c b/drivers/video/backlight/ep93xx_bl.c
> index 4149e0b2f83c..491185df1411 100644
> --- a/drivers/video/backlight/ep93xx_bl.c
> +++ b/drivers/video/backlight/ep93xx_bl.c
> @@ -38,8 +38,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return ep93xxbl_set(bl, brightness);
> diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
> index 75409ddfba3e..94b65e4d2aa0 100644
> --- a/drivers/video/backlight/gpio_backlight.c
> +++ b/drivers/video/backlight/gpio_backlight.c
> @@ -25,9 +25,7 @@ static int gpio_backlight_get_next_brightness(struct backlight_device *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_SUSPENDED | BL_CORE_FBBLANK))
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return brightness;
> diff --git a/drivers/video/backlight/hp680_bl.c b/drivers/video/backlight/hp680_bl.c
> index 8ea42b8d9bc8..01d805ca8415 100644
> --- a/drivers/video/backlight/hp680_bl.c
> +++ b/drivers/video/backlight/hp680_bl.c
> @@ -35,9 +35,7 @@ static void hp680bl_send_intensity(struct backlight_device *bd)
>  	u16 v;
>  	int intensity = bd->props.brightness;
>  
> -	if (bd->props.power != FB_BLANK_UNBLANK)
> -		intensity = 0;
> -	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
> +	if (backlight_is_blank(bd))
>  		intensity = 0;
>  	if (hp680bl_suspended)
>  		intensity = 0;
> diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c
> index f0385f9cf9da..996f7ba3b373 100644
> --- a/drivers/video/backlight/jornada720_bl.c
> +++ b/drivers/video/backlight/jornada720_bl.c
> @@ -54,7 +54,7 @@ static int jornada_bl_update_status(struct backlight_device *bd)
>  	jornada_ssp_start();
>  
>  	/* If backlight is off then really turn it off */
> -	if ((bd->props.power != FB_BLANK_UNBLANK) || (bd->props.fb_blank != FB_BLANK_UNBLANK)) {
> +	if (backlight_is_blank(bd)) {
>  		ret = jornada_ssp_byte(BRIGHTNESSOFF);
>  		if (ret != TXDUMMY) {
>  			dev_info(&bd->dev, "brightness off timeout\n");
> diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c
> index 1dfe13c18925..a0fd5d3d82f5 100644
> --- a/drivers/video/backlight/kb3886_bl.c
> +++ b/drivers/video/backlight/kb3886_bl.c
> @@ -89,9 +89,7 @@ static int kb3886bl_send_intensity(struct backlight_device *bd)
>  {
>  	int intensity = bd->props.brightness;
>  
> -	if (bd->props.power != FB_BLANK_UNBLANK)
> -		intensity = 0;
> -	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
> +	if (backlight_is_blank(bd))
>  		intensity = 0;
>  	if (kb3886bl_flags & KB3886BL_SUSPENDED)
>  		intensity = 0;
> diff --git a/drivers/video/backlight/led_bl.c b/drivers/video/backlight/led_bl.c
> index 3f66549997c8..c655ddd99cfb 100644
> --- a/drivers/video/backlight/led_bl.c
> +++ b/drivers/video/backlight/led_bl.c
> @@ -56,9 +56,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	if (brightness > 0)
> diff --git a/drivers/video/backlight/lm3533_bl.c b/drivers/video/backlight/lm3533_bl.c
> index ee09d1bd02b9..476146b62c4e 100644
> --- a/drivers/video/backlight/lm3533_bl.c
> +++ b/drivers/video/backlight/lm3533_bl.c
> @@ -41,9 +41,7 @@ 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)
> +	if (backlight_is_blank(bd))
>  		brightness = 0;
>  
>  	return lm3533_ctrlbank_set_brightness(&bl->cb, (u8)brightness);
> diff --git a/drivers/video/backlight/locomolcd.c b/drivers/video/backlight/locomolcd.c
> index cdc02e04f89d..8064cad8d683 100644
> --- a/drivers/video/backlight/locomolcd.c
> +++ b/drivers/video/backlight/locomolcd.c
> @@ -113,9 +113,7 @@ static int locomolcd_set_intensity(struct backlight_device *bd)
>  {
>  	int intensity = bd->props.brightness;
>  
> -	if (bd->props.power != FB_BLANK_UNBLANK)
> -		intensity = 0;
> -	if (bd->props.fb_blank != FB_BLANK_UNBLANK)
> +	if (backlight_is_blank(bd))
>  		intensity = 0;
>  	if (locomolcd_flags & LOCOMOLCD_SUSPENDED)
>  		intensity = 0;
> diff --git a/drivers/video/backlight/lv5207lp.c b/drivers/video/backlight/lv5207lp.c
> index c6ad73a784e2..ef8aa9803577 100644
> --- a/drivers/video/backlight/lv5207lp.c
> +++ b/drivers/video/backlight/lv5207lp.c
> @@ -48,9 +48,7 @@ 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))
> +	if (backlight_is_blank(backlight))
>  		brightness = 0;
>  
>  	if (brightness) {
> diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
> index 97cc260ff9d1..b8af2c6407d3 100644
> --- a/drivers/video/backlight/max8925_bl.c
> +++ b/drivers/video/backlight/max8925_bl.c
> @@ -66,13 +66,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return max8925_backlight_set(bl, brightness);
> diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
> index 82b8d7594701..7d0ffcd37f07 100644
> --- a/drivers/video/backlight/pwm_bl.c
> +++ b/drivers/video/backlight/pwm_bl.c
> @@ -111,9 +111,7 @@ static int pwm_backlight_update_status(struct backlight_device *bl)
>  	int brightness = bl->props.brightness;
>  	struct pwm_state state;
>  
> -	if (bl->props.power != FB_BLANK_UNBLANK ||
> -	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
> -	    bl->props.state & BL_CORE_FBBLANK)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	if (pb->notify)
> diff --git a/drivers/video/backlight/qcom-wled.c b/drivers/video/backlight/qcom-wled.c
> index 3d276b30a78c..9600f5d58ece 100644
> --- a/drivers/video/backlight/qcom-wled.c
> +++ b/drivers/video/backlight/qcom-wled.c
> @@ -261,9 +261,7 @@ static int wled_update_status(struct backlight_device *bl)
>  	u16 brightness = bl->props.brightness;
>  	int rc = 0;
>  
> -	if (bl->props.power != FB_BLANK_UNBLANK ||
> -	    bl->props.fb_blank != FB_BLANK_UNBLANK ||
> -	    bl->props.state & BL_CORE_FBBLANK)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	mutex_lock(&wled->lock);
> diff --git a/drivers/video/backlight/tps65217_bl.c b/drivers/video/backlight/tps65217_bl.c
> index 762e3feed097..1041e5e62ee3 100644
> --- a/drivers/video/backlight/tps65217_bl.c
> +++ b/drivers/video/backlight/tps65217_bl.c
> @@ -82,9 +82,7 @@ static int tps65217_bl_update_status(struct backlight_device *bl)
>  	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 */
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	if (brightness > 0) {
> diff --git a/drivers/video/backlight/wm831x_bl.c b/drivers/video/backlight/wm831x_bl.c
> index e55977d54c15..dc2ab6c8b7f9 100644
> --- a/drivers/video/backlight/wm831x_bl.c
> +++ b/drivers/video/backlight/wm831x_bl.c
> @@ -93,13 +93,7 @@ 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)
> +	if (backlight_is_blank(bl))
>  		brightness = 0;
>  
>  	return wm831x_backlight_set(bl, brightness);
> -- 
> 2.25.1
> 
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