[Intel-gfx] [PATCH v2 08/25] drm/i915/tgl: use TRANSCODER_EDP_VDSC on transcoder A

[Lucas De Marchi]

From: José Roberto de Souza <jose.souza at intel.com>

On TGL the special EDP transcoder is gone and it should be handled by
transcoder A.

v2 (Lucas):
  - Reuse POWER_DOMAIN_TRANSCODER_EDP_VDSC (suggested by Ville)
  - Use crtc->dev since new_crtc_state->state may be NULL on atomic
    commit (suggested by Maarten)

Cc: Imre Deak <imre.deak at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/i915/display/intel_vdsc.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index ffec807b8960..c27912f552f0 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -459,16 +459,19 @@ int intel_dp_compute_dsc_params(struct intel_dp *intel_dp,
 enum intel_display_power_domain
 intel_dsc_power_domain(const struct intel_crtc_state *crtc_state)
 {
+	struct drm_i915_private *i915 = to_i915(crtc_state->base.crtc->dev);
 	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 
 	/*
-	 * On ICL VDSC/joining for eDP transcoder uses a separate power well PW2
-	 * This requires POWER_DOMAIN_TRANSCODER_EDP_VDSC power domain.
+	 * On ICL+ VDSC/joining for eDP/A transcoder uses a separate power well
+	 * PW2. This requires POWER_DOMAIN_TRANSCODER_EDP_VDSC power domain.
 	 * For any other transcoder, VDSC/joining uses the power well associated
 	 * with the pipe/transcoder in use. Hence another reference on the
 	 * transcoder power domain will suffice.
 	 */
-	if (cpu_transcoder == TRANSCODER_EDP)
+	if (INTEL_GEN(i915) >= 12 && cpu_transcoder == TRANSCODER_A)
+		return POWER_DOMAIN_TRANSCODER_EDP_VDSC;
+	else if (cpu_transcoder == TRANSCODER_EDP)
 		return POWER_DOMAIN_TRANSCODER_EDP_VDSC;
 	else
 		return POWER_DOMAIN_TRANSCODER(cpu_transcoder);
-- 
2.21.0