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Date: Tue, 9 Apr 2013 17:11:36 +0800
From: Wang YanQing <udknight@...il.com>
To: airlied@...hat.com
Cc: paulo.r.zanoni@...el.com, alexander.deucher@....com,
ajax@...hat.com, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: [PATCH]drm: Re-add DMT modes for monitors back
Commit 196e077dc165a307efbd9e7569f81bbdbcf18f65
"drm: don't add inferred modes for monitors that don't support them"
It remove the call add_inferred_modes when DRM_EDID_FEATURE_DEFAULT_GTF
in feature support field is zero, this remove all inferred modes
come from GTF or CVT range information, and also remove DMT modes,
this make me lost some avaiable modes for my TV.
Without this patch I get:
Screen 0: minimum 320 x 200, current 2720 x 1024, maximum 32767 x 32767
VGA1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 414mm x 257mm
1440x900 75.0*+ 59.9
1400x1050 60.3
1280x1024 75.0
1280x800 59.8
1152x864 75.0
1280x720 60.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3
640x480 72.8 75.0 66.7 60.0
720x400 70.1
HDMI1 connected 1280x1024+1440+0 (normal left inverted right x axis y axis) 1600mm x 900mm
1920x1080 60.0 + 50.0
1920x1080i 30.0 25.0
1280x1024 60.0*
1280x720 60.0 50.0
1440x576i 25.0
1024x768 60.0
1440x480i 30.0
800x600 60.3
720x576 50.0
720x480 59.9
640x480 60.0 59.9
DP1 disconnected (normal left inverted right x axis y axis)
With this patch I get below:
Screen 0: minimum 320 x 200, current 2880 x 900, maximum 32767 x 32767
VGA1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 414mm x 257mm
1440x900 75.0*+ 59.9
1400x1050 60.3
1280x1024 75.0
1280x800 59.8
1152x864 75.0
1280x720 60.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3
640x480 72.8 75.0 66.7 60.0
720x400 70.1
HDMI1 connected 1440x900+1440+0 (normal left inverted right x axis y axis) 1600mm x 900mm
1440x900 59.9*+
1920x1080 60.0 + 50.0
1920x1080i 30.0 25.0
1680x1050 59.9
1400x1050 59.9
1280x1024 60.0
1280x960 60.0
1360x768 60.0
1280x800 59.9
1280x768 60.0
1280x720 60.0 50.0
1440x576i 25.0
1024x768 60.0
1440x480i 30.0
800x600 60.3 56.2
720x576 50.0
848x480 60.0
720x480 59.9
640x480 60.0 59.9
DP1 disconnected (normal left inverted right x axis y axis)
Signed-off-by: Wang YanQing <udknight@...il.com>
---
drivers/gpu/drm/drm_edid.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index dfd9ed3..10c2147 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1182,7 +1182,8 @@ do_inferred_modes(struct detailed_timing *timing, void *c)
closure->edid,
timing);
- if (!version_greater(closure->edid, 1, 1))
+ if (!version_greater(closure->edid, 1, 1) ||
+ !(closure->edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))
return; /* GTF not defined yet */
switch (range->flags) {
@@ -2022,8 +2023,7 @@ int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)
num_modes += add_cvt_modes(connector, edid);
num_modes += add_standard_modes(connector, edid);
num_modes += add_established_modes(connector, edid);
- if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)
- num_modes += add_inferred_modes(connector, edid);
+ num_modes += add_inferred_modes(connector, edid);
num_modes += add_cea_modes(connector, edid);
if (quirks & (EDID_QUIRK_PREFER_LARGE_60 | EDID_QUIRK_PREFER_LARGE_75))
--
1.7.12.4.dirty
--
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