linux-kernel - [PATCH 4/7] fbdev: mx3fb: Use backlight helper

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Message-Id: <20220607192335.1137249-5-steve@sk2.org>
Date:   Tue,  7 Jun 2022 21:23:32 +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 4/7] fbdev: mx3fb: 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: Helge Deller <deller@....de>
Cc: linux-fbdev@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org
---
 drivers/video/fbdev/mx3fb.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/video/fbdev/mx3fb.c b/drivers/video/fbdev/mx3fb.c
index b945b68984b9..76771e126d0a 100644
--- a/drivers/video/fbdev/mx3fb.c
+++ b/drivers/video/fbdev/mx3fb.c
@@ -283,12 +283,7 @@ static int mx3fb_bl_get_brightness(struct backlight_device *bl)
 static int mx3fb_bl_update_status(struct backlight_device *bl)
 {
 	struct mx3fb_data *fbd = bl_get_data(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;
+	int brightness = backlight_get_brightness(bl);
 
 	fbd->backlight_level = (fbd->backlight_level & ~0xFF) | brightness;
 
-- 
2.30.2