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| author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2014-11-14 19:52:31 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-12-03 11:35:05 +0300 |
| commit | d44b4dcbd1b44737462b77971d216d21a9413341 (patch) | |
| tree | 7487aa60c97046bff4426c91a104c722b7d8873c /drivers/gpu/drm/i915/intel_psr.c | |
| parent | bfd7ebdac3c303ea2ee1abd781ee3fda82321a92 (diff) | |
| download | linux-d44b4dcbd1b44737462b77971d216d21a9413341.tar.xz | |
drm/i915: HSW/BDW PSR Set idle_frames = VBT + 1
Let's use VBT + 1 now we parse it.
v2: fix subject
v3: rebase over intel_psr and without counting on previous fix
Cc: Arthur Runyan <arthur.j.runyan@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_psr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_psr.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 716b8a961eea..576568eb0759 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -163,7 +163,12 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp) struct drm_device *dev = dig_port->base.base.dev; struct drm_i915_private *dev_priv = dev->dev_private; uint32_t max_sleep_time = 0x1f; - uint32_t idle_frames = 1; + /* Lately it was identified that depending on panel idle frame count + * calculated at HW can be off by 1. So let's use what came + * from VBT + 1 and at minimum 2 to be on the safe side. + */ + uint32_t idle_frames = dev_priv->vbt.psr.idle_frames ? + dev_priv->vbt.psr.idle_frames + 1 : 2; uint32_t val = 0x0; const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES; bool only_standby = false; |