drm/edid: Add 6 bpc quirk for BOE panel in HP Pavilion 15-n233sl

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@vger.kernel.org> # v4.8+
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20181002152911.4370-1-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index c29dea89560563485532dd5f48a8fc6c77fd33bb..12be61308ba20717f49e21aeefb56ed2ac5e45d2 100644 (file)
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -111,6 +111,9 @@ 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 },