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drm/i915/dp: Do not enable PSR2 if DSC is enabled

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If a eDP panel supports both PSR2 and VDSC, our HW cannot
support both at a time. Give priority to PSR2 if a requested
resolution can be supported without compression else enable
VDSC and keep PSR2 disabled.

v4:
Fix the unrealted stuff removed during rebase (Ville)
v3:
* Rebase
v2:
* Add warning for DSC and PSR2 enabled together (DK)

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181128202628.20238-3-manasi.d.navare@intel.com
This commit is contained in:
Manasi Navare 2018-11-28 12:26:14 -08:00
parent a4a157777c
commit 8228c42fc0
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/i915/intel_psr.c
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@ -75,6 +75,10 @@ static bool intel_psr2_enabled(struct drm_i915_private *dev_priv,
if (i915_modparams.enable_psr == -1)
return false;
/* Cannot enable DSC and PSR2 simultaneously */
WARN_ON(crtc_state->dsc_params.compression_enable &&
crtc_state->has_psr2);
switch (dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK) {
case I915_PSR_DEBUG_FORCE_PSR1:
return false;
@ -502,6 +506,16 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
if (!dev_priv->psr.sink_psr2_support)
return false;
/*
* DSC and PSR2 cannot be enabled simultaneously. If a requested
* resolution requires DSC to be enabled, priority is given to DSC
* over PSR2.
*/
if (crtc_state->dsc_params.compression_enable) {
DRM_DEBUG_KMS("PSR2 cannot be enabled since DSC is enabled\n");
return false;
}
if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) {
psr_max_h = 4096;
psr_max_v = 2304;