blob: f46298890b8ef6ac1f3542b69f86c45facd00241 [file] [log] [blame]
From f778f35845f34a99bce7fedab0cfd8dedc3728fa Mon Sep 17 00:00:00 2001
From: Imre Deak <>
Date: Tue, 27 Aug 2013 12:24:09 +0300
Subject: drm/i915: fix lvds/dp panel fitter setting
If need to enable the panel fitter, the crtc timings have to be
programmed according to the panel's native (fixed) mode. This isn't the
case atm, since after the encoder changes adjusted_mode to fixed
mode the crtc_* timing fields of adjusted_mode will stay at their original
non-native values that the user passed in. This results in a corrupted
One exception is when we have a second pass of computing encoder configs
due to bandwidth limitation, since then we'll set adjusted_mode.crtc_*
fields to the fixed mode values set in the first pass; so in this case
things will work out.
Fix this by updating the adjusted_mode.crtc_* fields when we set the
fixed panel mode.
This regression has been introduced in
commit 135c81b8c3c9a70d7b55758c9c2a247a4abb7b64
Author: Daniel Vetter <>
Date: Sun Jul 21 21:37:09 2013 +0200
drm/i915: clean up crtc timings computation
Signed-off-by: Imre Deak <>
Reviewed-by: Mika Kuoppala <>
Signed-off-by: Daniel Vetter <>
(cherry picked from commit a52690e445637dda7f71878965d64d9b6a15a2b7)
Signed-off-by: Darren Hart <>
drivers/gpu/drm/i915/intel_panel.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index a43c33bc4a35..913cb9d7fd32 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -50,6 +50,8 @@ intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
adjusted_mode->vtotal = fixed_mode->vtotal;
adjusted_mode->clock = fixed_mode->clock;
+ drm_mode_set_crtcinfo(adjusted_mode, 0);
/* adjusted_mode has been preset to be the panel's fixed mode */