From: Aaron Ma Date: Fri, 9 Oct 2020 08:57:50 +0000 (+0800) Subject: drm/i915: Force DPCD backlight mode for BOE 2270 panel X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=055f8458d95a38c20e8360634255f684378179eb;p=linux.git drm/i915: Force DPCD backlight mode for BOE 2270 panel BOE 2270 panel failed to control backlight brightness. Add it in edid quirks to force using DPCD backlight control. Then the brightness can be controlled. Signed-off-by: Aaron Ma Signed-off-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/20201009085750.88490-2-aaron.ma@canonical.com --- diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 79732402336d4..14ddf28ecac0a 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -1954,6 +1954,7 @@ static const struct edid_quirk edid_quirk_list[] = { { 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) }, + { MFG(0x09, 0xe5), PROD_ID(0xde, 0x08), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, }; #undef MFG