drm/edid: add 6 bpc quirk to the Sharp LQ116M1JW10

The Sharp LQ116M1JW105 reports that it supports 8 bpc modes,
but it will happen display noise in some videos.
So, limit it to 6 bpc modes.

Signed-off-by: Ajye Huang <ajye_huang@compal.corp-partner.google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patch.msgid.link/20251101040043.3768848-1-ajye_huang@compal.corp-partner.google.com

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index e2e85345aa9a4081004eb44f19fa50dd41196593..26bb7710a46204548c150a25d390dac512ec7f0e 100644 (file)
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -250,6 +250,9 @@ static const struct edid_quirk {
        EDID_QUIRK('S', 'V', 'R', 0x1019, BIT(EDID_QUIRK_NON_DESKTOP)),
        EDID_QUIRK('A', 'U', 'O', 0x1111, BIT(EDID_QUIRK_NON_DESKTOP)),
 
+       /* LQ116M1JW10 displays noise when 8 bpc, but display fine as 6 bpc */
+       EDID_QUIRK('S', 'H', 'P', 0x154c, BIT(EDID_QUIRK_FORCE_6BPC)),
+
        /*
         * @drm_edid_internal_quirk entries end here, following with the
         * @drm_edid_quirk entries.