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| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2014-01-08 11:12:27 -0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-01-08 15:54:09 +0100 |
| commit | 0882dae983707455e97479e5e904e37673517ebc (patch) | |
| tree | 5a2ff3fa7740749b3f70fdce45a9aca655a214e1 /drivers | |
| parent | 47f956477dc6173f8882e8ea0fa9e8edb8a7d942 (diff) | |
| download | linux-0882dae983707455e97479e5e904e37673517ebc.tar.gz linux-0882dae983707455e97479e5e904e37673517ebc.tar.bz2 linux-0882dae983707455e97479e5e904e37673517ebc.zip | |
drm/i915: fix DDI PLLs HW state readout code
Properly zero the refcounts and crtc->ddi_pll_set so the previous HW
state doesn't affect the result of reading the current HW state.
This fixes WARNs about WRPLL refcount if we have an HDMI monitor on
HSW and then suspend/resume.
Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=64379
Tested-by: Qingshuai Tian <qingshuai.tian@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 526c8ded16b0..b69dc3e66c16 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1057,12 +1057,18 @@ void intel_ddi_setup_hw_pll_state(struct drm_device *dev) enum pipe pipe; struct intel_crtc *intel_crtc; + dev_priv->ddi_plls.spll_refcount = 0; + dev_priv->ddi_plls.wrpll1_refcount = 0; + dev_priv->ddi_plls.wrpll2_refcount = 0; + for_each_pipe(pipe) { intel_crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); - if (!intel_crtc->active) + if (!intel_crtc->active) { + intel_crtc->ddi_pll_sel = PORT_CLK_SEL_NONE; continue; + } intel_crtc->ddi_pll_sel = intel_ddi_get_crtc_pll(dev_priv, pipe); |