linux-kernel - [PATCH AUTOSEL 5.7 060/274] drm/dp: Lenovo X13 Yoga OLED panel brightness fix

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Date:   Mon,  8 Jun 2020 19:02:33 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Mark Pearson <mpearson.lenovo@...il.com>, jendrina@...ovo.com,
        Mark Pearson <mpearson@...il.com>,
        Lyude Paul <lyude@...hat.com>, Sasha Levin <sashal@...nel.org>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.7 060/274] drm/dp: Lenovo X13 Yoga OLED panel brightness fix

From: Mark Pearson <mpearson.lenovo@...il.com>

[ Upstream commit 0df3ff451287d71c620384eb7bb2cd3a8106412c ]

Add another panel that needs the edid quirk to the list so that
brightness control works correctly. Fixes issue seen on Lenovo X13 Yoga
with OLED panel

Co-developed-by: jendrina@...ovo.com
Signed-off-by: Mark Pearson <mpearson@...il.com>
[fixed commit message, sobs]
Signed-off-by: Lyude Paul <lyude@...hat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200519025635.22846-1-mpearson@lenovo.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/drm_dp_helper.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index c6fbe6e6bc9d..41f0e797ce8c 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1313,6 +1313,7 @@ static const struct edid_quirk edid_quirk_list[] = {
 	{ MFG(0x06, 0xaf), PROD_ID(0xeb, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
 	{ MFG(0x4d, 0x10), PROD_ID(0xc7, 0x14), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
 	{ MFG(0x4d, 0x10), PROD_ID(0xe6, 0x14), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
+	{ MFG(0x4c, 0x83), PROD_ID(0x47, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) },
 };
 
 #undef MFG
-- 
2.25.1