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| author | Patrik Jakobsson | 2014-03-04 00:42:44 +0100 |
|---|---|---|
| committer | Daniel Vetter | 2014-03-05 21:30:38 +0100 |
| commit | b3064154dfd37deb386b1e459c54e1ca2460b3d5 (patch) | |
| tree | 37e4e57d9126dcd5f313f9174892d94956ab57d9 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | drm/i915: Make num_sprites a per-pipe value (diff) | |
| download | kernel-qcow2-linux-b3064154dfd37deb386b1e459c54e1ca2460b3d5.tar.gz kernel-qcow2-linux-b3064154dfd37deb386b1e459c54e1ca2460b3d5.tar.xz kernel-qcow2-linux-b3064154dfd37deb386b1e459c54e1ca2460b3d5.zip | |
drm/i915: Don't just say it, actually force edp vdd
This patch fixes the blank screen bug introduced in 3.14-rc1 on the
MacBook Air 6,2. The comments state that we need to force edp vdd so
lets put it back.
The regression was introduced by the following commit:
commit dff392dbd258381a6c3164f38420593f2d291e3b
Author: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Fri Dec 6 17:32:41 2013 -0200
drm/i915: don't touch the VDD when disabling the panel
v2: Wrap intel_disable_dp() with _vdd_on and _vdd_off
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74628
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 1ac4b11765c7..10154ec77b98 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1326,7 +1326,8 @@ void intel_edp_panel_off(struct intel_dp *intel_dp) pp = ironlake_get_pp_control(intel_dp); /* We need to switch off panel power _and_ force vdd, for otherwise some * panels get very unhappy and cease to work. */ - pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_BLC_ENABLE); + pp &= ~(POWER_TARGET_ON | PANEL_POWER_RESET | EDP_FORCE_VDD | + EDP_BLC_ENABLE); pp_ctrl_reg = _pp_ctrl_reg(intel_dp); @@ -1861,9 +1862,11 @@ static void intel_disable_dp(struct intel_encoder *encoder) /* Make sure the panel is off before trying to change the mode. But also * ensure that we have vdd while we switch off the panel. */ + edp_panel_vdd_on(intel_dp); intel_edp_backlight_off(intel_dp); intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); intel_edp_panel_off(intel_dp); + edp_panel_vdd_off(intel_dp, true); /* cpu edp my only be disable _after_ the cpu pipe/plane is disabled. */ if (!(port == PORT_A || IS_VALLEYVIEW(dev))) |