linux-kernel - [PATCH 4.9 160/171] drm/edid: Add 6 bpc quirk for BOE panel in HP Pavilion 15-n233sl

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Message-Id: <20181108215138.435376870@linuxfoundation.org>
Date:   Thu,  8 Nov 2018 13:52:10 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>
Subject: [PATCH 4.9 160/171] drm/edid: Add 6 bpc quirk for BOE panel in HP Pavilion 15-n233sl

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kai-Heng Feng <kai.heng.feng@...onical.com>

commit 0711a43b6d84ff9189adfbf83c8bbf56eef794bf upstream.

There's another panel that reports "DFP 1.x compliant TMDS" but it
supports 6bpc instead of 8 bpc.

Apply 6 bpc quirk for the panel to fix it.

BugLink: https://bugs.launchpad.net/bugs/1794387
Cc: <stable@...r.kernel.org> # v4.8+
Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
Signed-off-by: Daniel Vetter <daniel.vetter@...ll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20181002152911.4370-1-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/drm_edid.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -107,6 +107,9 @@ static const struct edid_quirk {
 	/* AEO model 0 reports 8 bpc, but is a 6 bpc panel */
 	{ "AEO", 0, EDID_QUIRK_FORCE_6BPC },
 
+	/* BOE model on HP Pavilion 15-n233sl reports 8 bpc, but is a 6 bpc panel */
+	{ "BOE", 0x78b, EDID_QUIRK_FORCE_6BPC },
+
 	/* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */
 	{ "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC },