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drm/i915: Use HAS_PSR to avoid unecessary interactions.

Browse source 
Let's be more conservative and protect platforms that don't
support PSR from unecessary interactions.

Reviewed-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rodrigo Vivi 2014-06-12 10:16:38 -07:00 • committed by Daniel Vetter
commit 4704c573fc
1 changed files with 8 additions and 5 deletions
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13
drivers/gpu/drm/i915/intel_dp.c
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@ -1747,11 +1747,6 @@ static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp)
dev_priv->psr.source_ok = false;
if (!HAS_PSR(dev)) {
DRM_DEBUG_KMS("PSR not supported on this platform\n");
return false;
}
if ((intel_encoder->type != INTEL_OUTPUT_EDP) ||
(dig_port->port != PORT_A)) {
DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n");
@ -1824,6 +1819,11 @@ void intel_edp_psr_enable(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
if (!HAS_PSR(dev)) {
DRM_DEBUG_KMS("PSR not supported on this platform\n");
return;
}
if (intel_edp_psr_match_conditions(intel_dp) &&
!intel_edp_is_psr_enabled(dev))
intel_edp_psr_do_enable(intel_dp);
@ -1851,6 +1851,9 @@ void intel_edp_psr_update(struct drm_device *dev)
struct intel_encoder *encoder;
struct intel_dp *intel_dp = NULL;
if (!HAS_PSR(dev))
return;
list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head)
if (encoder->type == INTEL_OUTPUT_EDP) {
intel_dp = enc_to_intel_dp(&encoder->base);