Message ID | 20181204003403.23361-8-jose.souza@intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | [v4,1/9] drm/i915: Disable PSR in Apple panels | expand |
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 11b038ba96ec..298c3145212d 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -536,6 +536,17 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp, return false; } + /* + * HW sends SU blocks of size four scan lines, which means the starting + * X coordinate and Y granularity requirements will always be met. We + * only need to validate the SU block width is a multiple of 4. + */ + if (crtc_hdisplay % 4) { + DRM_DEBUG_KMS("PSR2 not enabled, hdisplay(%d) not multiple of 4\n", + crtc_hdisplay); + return false; + } + return true; }