Commit 49d45a31 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by Dave Airlie

drm/edid: add quirk for BPC in Samsung NP700G7A-S01PL notebook

This bug in EDID was exposed by:

commit eccea792
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Mon Mar 26 15:12:54 2012 -0400

    drm/radeon/kms: improve bpc handling (v2)

Which resulted in kind of regression in 3.5. This fixes
https://bugs.freedesktop.org/show_bug.cgi?id=70934Signed-off-by: default avatarRafał Miłecki <zajec5@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent f1cd6594
......@@ -68,6 +68,8 @@
#define EDID_QUIRK_DETAILED_SYNC_PP (1 << 6)
/* Force reduced-blanking timings for detailed modes */
#define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7)
/* Force 8bpc */
#define EDID_QUIRK_FORCE_8BPC (1 << 8)
struct detailed_mode_closure {
struct drm_connector *connector;
......@@ -128,6 +130,9 @@ static struct edid_quirk {
/* Medion MD 30217 PG */
{ "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 },
/* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */
{ "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC },
};
/*
......@@ -3435,6 +3440,9 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
drm_add_display_info(edid, &connector->display_info);
if (quirks & EDID_QUIRK_FORCE_8BPC)
connector->display_info.bpc = 8;
return num_modes;
}
EXPORT_SYMBOL(drm_add_edid_modes);
......
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