linux-kernel - [PATCH 3/7] fbdev: radeon: Use backlight helper

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Date:   Tue,  7 Jun 2022 21:23:31 +0200
From:   Stephen Kitt <steve@....org>
To:     Antonino Daplas <adaplas@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Helge Deller <deller@....de>, Paul Mackerras <paulus@...ba.org>
Cc:     linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Stephen Kitt <steve@....org>, dri-devel@...ts.freedesktop.org
Subject: [PATCH 3/7] fbdev: radeon: Use backlight helper

Instead of retrieving the backlight brightness in struct
backlight_properties manually, and then checking whether the backlight
should be on at all, use backlight_get_brightness() which does all
this and insulates this from future changes.

Signed-off-by: Stephen Kitt <steve@....org>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Helge Deller <deller@....de>
Cc: linux-fbdev@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org
---
 drivers/video/fbdev/aty/radeon_backlight.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/video/fbdev/aty/radeon_backlight.c b/drivers/video/fbdev/aty/radeon_backlight.c
index d2c1263ad260..427adc838f77 100644
--- a/drivers/video/fbdev/aty/radeon_backlight.c
+++ b/drivers/video/fbdev/aty/radeon_backlight.c
@@ -57,11 +57,7 @@ static int radeon_bl_update_status(struct backlight_device *bd)
 	 * backlight. This provides some greater power saving and the display
 	 * is useless without backlight anyway.
 	 */
-        if (bd->props.power != FB_BLANK_UNBLANK ||
-	    bd->props.fb_blank != FB_BLANK_UNBLANK)
-		level = 0;
-	else
-		level = bd->props.brightness;
+	level = backlight_get_brightness(bd);
 
 	del_timer_sync(&rinfo->lvds_timer);
 	radeon_engine_idle();
-- 
2.30.2