diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_psr.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_psr.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 68bd0bb34817..2b0d1baf15b3 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -327,6 +327,9 @@ static bool intel_psr_match_conditions(struct intel_dp *intel_dp) struct drm_i915_private *dev_priv = to_i915(dev); struct drm_crtc *crtc = dig_port->base.base.crtc; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); + const struct drm_display_mode *adjusted_mode = + &intel_crtc->config->base.adjusted_mode; + int psr_setup_time; lockdep_assert_held(&dev_priv->psr.lock); WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); @@ -365,11 +368,25 @@ static bool intel_psr_match_conditions(struct intel_dp *intel_dp) } if (IS_HASWELL(dev) && - intel_crtc->config->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) { + adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) { DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n"); return false; } + psr_setup_time = drm_dp_psr_setup_time(intel_dp->psr_dpcd); + if (psr_setup_time < 0) { + DRM_DEBUG_KMS("PSR condition failed: Invalid PSR setup time (0x%02x)\n", + intel_dp->psr_dpcd[1]); + return false; + } + + if (intel_usecs_to_scanlines(adjusted_mode, psr_setup_time) > + adjusted_mode->crtc_vtotal - adjusted_mode->crtc_vdisplay - 1) { + DRM_DEBUG_KMS("PSR condition failed: PSR setup time (%d us) too long\n", + psr_setup_time); + return false; + } + dev_priv->psr.source_ok = true; return true; } |