linux-kernel - [PATCH 02/15] video: fbdev: atyfb: Introduce backlight_get

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Message-Id: <20230107-sam-video-backlight-drop-fb_blank-v1-2-1bd9bafb351f@ravnborg.org>
Date:   Sat, 07 Jan 2023 19:26:16 +0100
From:   Sam Ravnborg via B4 Submission Endpoint 
        <devnull+sam.ravnborg.org@...nel.org>
To:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Helge Deller <deller@....de>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Antonino Daplas <adaplas@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Robin van der Gracht <robin@...tonic.nl>,
        Miguel Ojeda <ojeda@...nel.org>, Lee Jones <lee@...nel.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>
Cc:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-staging@...ts.linux.dev,
        linuxppc-dev@...ts.ozlabs.org, Stephen Kitt <steve@....org>,
        Sam Ravnborg <sam@...nborg.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Souptick Joarder <jrdr.linux@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Jason Yan <yanaijie@...wei.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 02/15] video: fbdev: atyfb: Introduce backlight_get_brightness()

From: Sam Ravnborg <sam@...nborg.org>

Introduce backlight_get_brightness() to simplify logic
and avoid direct access to backlight properties.

Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: Souptick Joarder <jrdr.linux@...il.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Cc: Jason Yan <yanaijie@...wei.com>
Cc: Jani Nikula <jani.nikula@...el.com>
Cc: Arnd Bergmann <arnd@...db.de>
---
 drivers/video/fbdev/aty/atyfb_base.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c
index 0ccf5d401ecb..ca361e215904 100644
--- a/drivers/video/fbdev/aty/atyfb_base.c
+++ b/drivers/video/fbdev/aty/atyfb_base.c
@@ -2219,13 +2219,7 @@ static int aty_bl_update_status(struct backlight_device *bd)
 {
 	struct atyfb_par *par = bl_get_data(bd);
 	unsigned int reg = aty_ld_lcd(LCD_MISC_CNTL, par);
-	int level;
-
-	if (bd->props.power != FB_BLANK_UNBLANK ||
-	    bd->props.fb_blank != FB_BLANK_UNBLANK)
-		level = 0;
-	else
-		level = bd->props.brightness;
+	int level = backlight_get_brightness(bd);
 
 	reg |= (BLMOD_EN | BIASMOD_EN);
 	if (level > 0) {

-- 
2.34.1