diff options
| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2013-03-22 14:16:38 -0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-04-18 09:43:23 +0200 |
| commit | f7708f78bd51a46abf00ae22ebb1b7deb594fc62 (patch) | |
| tree | 793329a8aaebc68e7718a91c194af3f8e2a59f97 /drivers/gpu/drm/i915 | |
| parent | 15d199ea1f3e2b960b0efccca2cdd0ba40a31f3c (diff) | |
drm/i915: don't touch the PF regs if the power well is down
This solves some "unclaimed register" messages when booting the
machine with eDP attached.
V2: Rebase and add the comment requested by Daniel.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 236d268d809c..51871c248d6d 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3599,9 +3599,13 @@ static void haswell_crtc_disable(struct drm_crtc *crtc) intel_ddi_disable_transcoder_func(dev_priv, cpu_transcoder); - /* Disable PF */ - I915_WRITE(PF_CTL(pipe), 0); - I915_WRITE(PF_WIN_SZ(pipe), 0); + /* XXX: Once we have proper panel fitter state tracking implemented with + * hardware state read/check support we should switch to only disable + * the panel fitter when we know it's used. */ + if (intel_using_power_well(dev)) { + I915_WRITE(PF_CTL(pipe), 0); + I915_WRITE(PF_WIN_SZ(pipe), 0); + } intel_ddi_disable_pipe_clock(intel_crtc); |