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Commit bc5b9641 authored by Mario Kleiner's avatar Mario Kleiner Committed by Alex Deucher
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drm/edid: Add quirk for Sony PVM-2541A to get 12 bpc hdmi deep color. 



The Sony PVM-2541A OLED high precision color display supports
both 10 bpc and 12 bpc hdmi deep color input, but its edid
does not signal any deep color support.

Add a quirk to force it being treated as a 12 bpc panel.

Signed-off-by: default avatarMario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d0c94692

drivers/gpu/drm/drm_edid.c

+8 −0
Original line number Original line Diff line number Diff line
@@ -70,6 +70,8 @@ 
#define EDID_QUIRK_FORCE_REDUCED_BLANKING	(1 << 7)

#define EDID_QUIRK_FORCE_REDUCED_BLANKING	(1 << 7)

/* Force 8bpc */

/* Force 8bpc */

#define EDID_QUIRK_FORCE_8BPC			(1 << 8)

#define EDID_QUIRK_FORCE_8BPC			(1 << 8)

/* Force 12bpc */

#define EDID_QUIRK_FORCE_12BPC			(1 << 9)





struct detailed_mode_closure {

struct detailed_mode_closure {

	struct drm_connector *connector;

	struct drm_connector *connector;
@@ -125,6 +127,9 @@ static struct edid_quirk { 
	{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },

	{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },

	{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },

	{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },





	/* Sony PVM-2541A does up to 12 bpc, but only reports max 8 bpc */

	{ "SNY", 0x2541, EDID_QUIRK_FORCE_12BPC },



	/* ViewSonic VA2026w */

	/* ViewSonic VA2026w */

	{ "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },

	{ "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING },
@@ -3660,6 +3665,9 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid) 
	if (quirks & EDID_QUIRK_FORCE_8BPC)

	if (quirks & EDID_QUIRK_FORCE_8BPC)

		connector->display_info.bpc = 8;

		connector->display_info.bpc = 8;





	if (quirks & EDID_QUIRK_FORCE_12BPC)

		connector->display_info.bpc = 12;



	return num_modes;

	return num_modes;

}

}

EXPORT_SYMBOL(drm_add_edid_modes);

EXPORT_SYMBOL(drm_add_edid_modes);