Commit 055f8458 authored Oct 09, 2020 by Aaron Ma Committed by Lyude Paul Oct 12, 2020

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 <aaron.ma@canonical.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201009085750.88490-2-aaron.ma@canonical.com

parent 98e497e2

drivers/gpu/drm/drm_dp_helper.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

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