1. Disable Left/right VDSC branch in DSS Ctrl reg
depending on the number of VDSC engines being used
2. Disable joiner in DSS Ctrl reg
v3 (From Manasi):
* Add Disable PG2 for VDSC on eDP
v2 (From Manasi):
* Use old_crtc_state to find dsc params
* Add a condition to disable only if
dsc state compression is enabled
* Use correct DSS CTL regs
Cc: Jani Nikula <jani.nik...@linux.intel.com>
Cc: Ville Syrjala <ville.syrj...@linux.intel.com>
Cc: Anusha Srivatsa <anusha.sriva...@intel.com>
Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
Signed-off-by: Gaurav K Singh <gaurav.k.si...@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.sriva...@intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 2 ++
drivers/gpu/drm/i915/intel_display.c | 13 ++++++++++
drivers/gpu/drm/i915/intel_vdsc.c | 37 ++++++++++++++++++++++++++++
3 files changed, 52 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f085df3f8c29..70d80cfaa3ae 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3471,6 +3471,8 @@ extern bool intel_set_memory_cxsr(struct drm_i915_private
*dev_priv,
bool enable);
extern void intel_dsc_enable(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state);
+extern void intel_dsc_disable(struct intel_encoder *encoder,
+ struct intel_crtc_state *crtc_state);
int i915_reg_read_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 8010735d55be..f7760e92eb82 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5838,6 +5838,9 @@ static void haswell_crtc_disable(struct intel_crtc_state
*old_crtc_state,
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+ int i;
intel_encoders_disable(crtc, old_crtc_state, old_state);
@@ -5854,6 +5857,16 @@ static void haswell_crtc_disable(struct intel_crtc_state
*old_crtc_state,
if (!transcoder_is_dsi(cpu_transcoder))
intel_ddi_disable_transcoder_func(old_crtc_state);
+ for_each_new_connector_in_state(old_state, conn, conn_state, i) {
+ struct intel_encoder *encoder =
+ to_intel_encoder(conn_state->best_encoder);
+
+ if (conn_state->crtc != crtc)
+ continue;
+
+ intel_dsc_disable(encoder, old_crtc_state);
+ }
+
if (INTEL_GEN(dev_priv) >= 9)
skylake_scaler_disable(intel_crtc);
else
diff --git a/drivers/gpu/drm/i915/intel_vdsc.c
b/drivers/gpu/drm/i915/intel_vdsc.c
index c1874001ca67..422b37e9772f 100644
--- a/drivers/gpu/drm/i915/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/intel_vdsc.c
@@ -1046,3 +1046,40 @@ void intel_dsc_enable(struct intel_encoder *encoder,
return;
}
+
+void intel_dsc_disable(struct intel_encoder *encoder,
+ struct intel_crtc_state *old_crtc_state)
+{
+ struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+ struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ enum pipe pipe = crtc->pipe;
+ i915_reg_t dss_ctl1_reg, dss_ctl2_reg;
+ u32 dss_ctl1_val = 0, dss_ctl2_val = 0;
+
+ if (!old_crtc_state->dsc_params.compression_enable)
+ return;
+
+ if (encoder->type == INTEL_OUTPUT_EDP) {
+ dss_ctl1_reg = DSS_CTL1;
+ dss_ctl2_reg = DSS_CTL2;
+ } else {
+ dss_ctl1_reg = ICL_PIPE_DSS_CTL1(pipe);
+ dss_ctl2_reg = ICL_PIPE_DSS_CTL2(pipe);
+ }
+ dss_ctl1_val = I915_READ(dss_ctl1_reg);
+ if (dss_ctl1_val & JOINER_ENABLE)
+ dss_ctl1_val &= ~JOINER_ENABLE;
+ I915_WRITE(dss_ctl1_reg, dss_ctl1_val);
+
+ dss_ctl2_val = I915_READ(dss_ctl2_reg);
+ if (dss_ctl2_val & LEFT_BRANCH_VDSC_ENABLE ||
+ dss_ctl2_val & RIGHT_BRANCH_VDSC_ENABLE)
+ dss_ctl2_val &= ~(LEFT_BRANCH_VDSC_ENABLE |
+ RIGHT_BRANCH_VDSC_ENABLE);
+ I915_WRITE(dss_ctl2_reg, dss_ctl2_val);
+
+ /* Put the PG2 power well for VDSC on eDP */
+ if (intel_dp_is_edp(intel_dp))
+ intel_display_power_put(dev_priv, POWER_DOMAIN_VDSC_EDP_MIPI);
+}
--
2.18.0
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