Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Sam Ravnborg via B4 Submission Endpoint 
        <devnull+sam.ravnborg.org@kernel.org>
Date:   Sat, 07 Jan 2023 19:26:18 +0100
Subject: [PATCH 04/15] video: fbdev: radeon: Introduce backlight_get_brightness()
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <20230107-sam-video-backlight-drop-fb_blank-v1-4-1bd9bafb351f@ravnborg.org>
References: <20230107-sam-video-backlight-drop-fb_blank-v1-0-1bd9bafb351f@ravnborg.org>
In-Reply-To: <20230107-sam-video-backlight-drop-fb_blank-v1-0-1bd9bafb351f@ravnborg.org>
To:     Nicolas Ferre <nicolas.ferre@microchip.com>,
        Helge Deller <deller@gmx.de>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Claudiu Beznea <claudiu.beznea@microchip.com>,
        Antonino Daplas <adaplas@gmail.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Robin van der Gracht <robin@protonic.nl>,
        Miguel Ojeda <ojeda@kernel.org>, Lee Jones <lee@kernel.org>,
        Daniel Thompson <daniel.thompson@linaro.org>,
        Jingoo Han <jingoohan1@gmail.com>
Cc:     linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-omap@vger.kernel.org, linux-staging@lists.linux.dev,
        linuxppc-dev@lists.ozlabs.org, Stephen Kitt <steve@sk2.org>,
        Sam Ravnborg <sam@ravnborg.org>
Reply-To: <sam@ravnborg.org>
Precedence: bulk

From: Sam Ravnborg <sam@ravnborg.org>

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

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-fbdev@vger.kernel.org
---
 drivers/video/fbdev/aty/radeon_backlight.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/video/fbdev/aty/radeon_backlight.c b/drivers/video/fbdev/aty/radeon_backlight.c
index d2c1263ad260..22a39fea7b89 100644
--- a/drivers/video/fbdev/aty/radeon_backlight.c
+++ b/drivers/video/fbdev/aty/radeon_backlight.c
@@ -54,14 +54,10 @@ static int radeon_bl_update_status(struct backlight_device *bd)
 		return 0;
 
 	/* We turn off the LCD completely instead of just dimming the
-	 * backlight. This provides some greater power saving and the display
-	 * is useless without backlight anyway.
+	 * backlight if level < 1. 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();

-- 
2.34.1