diff options
| author | Mika Kuoppala <[email protected]> | 2013-02-08 16:35:37 +0200 |
|---|---|---|
| committer | Daniel Vetter <[email protected]> | 2013-02-20 00:21:39 +0100 |
| commit | 24a1f16de97c4cf0029d9acd04be06db32208726 (patch) | |
| tree | ab8168b54c640f80a44defd0d4cf7211fc01c074 | |
| parent | 1d7aaa0cfe3d1b5ee23958fce71973e3ae9e52e4 (diff) | |
drm/i915: disable shared panel fitter for pipe
If encoder is switched off by BIOS, but the panel fitter is left on,
we never try to turn off the panel fitter and leave it still attached
to the pipe - which can cause blurry output elsewhere.
Based on work by Chris Wilson <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58867
Cc: [email protected]
Signed-off-by: Mika Kuoppala <[email protected]>
Tested-by: Andreas Sturmlechner <[email protected]>
[danvet: Remove the redundant HAS_PCH_SPLIT check and add a tiny
comment.]
Signed-off-by: Daniel Vetter <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 0dfecaf599ff..fc9b98794b25 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3637,6 +3637,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc) struct intel_encoder *encoder; int pipe = intel_crtc->pipe; int plane = intel_crtc->plane; + u32 pctl; if (!intel_crtc->active) @@ -3656,6 +3657,13 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc) intel_disable_plane(dev_priv, plane, pipe); intel_disable_pipe(dev_priv, pipe); + + /* Disable pannel fitter if it is on this pipe. */ + pctl = I915_READ(PFIT_CONTROL); + if ((pctl & PFIT_ENABLE) && + ((pctl & PFIT_PIPE_MASK) >> PFIT_PIPE_SHIFT) == pipe) + I915_WRITE(PFIT_CONTROL, 0); + intel_disable_pll(dev_priv, pipe); intel_crtc->active = false; |