drm/i915/display/vdsc: Add ultrajoiner support with DSC

Add changes to DSC which are required for Ultrajoiner.

v2:
-Use correct helper for setting bits for bigjoiner secondary. (Ankit)
-Use primary/secondary instead of master/slave. (Suraj)
v3: Add the ultrajoiner helpers and use it for setting ultrajoiner
bits (Ankit)
v4: Use num_vdsc_instances *= num_joined_pipes (Ville)
v5: Align the helper to get ultrajoiner enabled pipes with other helpers
(Ville)

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240930163549.416410-7-ankit.k.nautiyal@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 099304a742036ad14e3b6f62f0ff145c85d69886..40ad3fdaab108704264f0ae854259714308b9b13 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -312,6 +312,48 @@ u8 _intel_modeset_secondary_pipes(const struct intel_crtc_state *crtc_state)
        return bigjoiner_secondary_pipes(crtc_state);
 }
 
+bool intel_crtc_is_ultrajoiner(const struct intel_crtc_state *crtc_state)
+{
+       return intel_crtc_num_joined_pipes(crtc_state) >= 4;
+}
+
+static u8 ultrajoiner_primary_pipes(const struct intel_crtc_state *crtc_state)
+{
+       if (!intel_crtc_is_ultrajoiner(crtc_state))
+               return 0;
+
+       return crtc_state->joiner_pipes & (0b00010001 << joiner_primary_pipe(crtc_state));
+}
+
+bool intel_crtc_is_ultrajoiner_primary(const struct intel_crtc_state *crtc_state)
+{
+       struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+       return intel_crtc_is_ultrajoiner(crtc_state) &&
+              BIT(crtc->pipe) & ultrajoiner_primary_pipes(crtc_state);
+}
+
+/*
+ * The ultrajoiner enable bit doesn't seem to follow primary/secondary logic or
+ * any other logic, so lets just add helper function to
+ * at least hide this hassle..
+ */
+static u8 ultrajoiner_enable_pipes(const struct intel_crtc_state *crtc_state)
+{
+       if (!intel_crtc_is_ultrajoiner(crtc_state))
+               return 0;
+
+       return crtc_state->joiner_pipes & (0b01110111 << joiner_primary_pipe(crtc_state));
+}
+
+bool intel_crtc_ultrajoiner_enable_needed(const struct intel_crtc_state *crtc_state)
+{
+       struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+       return intel_crtc_is_ultrajoiner(crtc_state) &&
+              BIT(crtc->pipe) & ultrajoiner_enable_pipes(crtc_state);
+}
+
 u8 intel_crtc_joiner_secondary_pipes(const struct intel_crtc_state *crtc_state)
 {
        if (crtc_state->joiner_pipes)

diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index 1f0fed5ea7bc8555d45cf4c6a84fef5d0638845c..61e1df878de9d33691ade1562a79339b17823071 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -441,6 +441,9 @@ bool intel_crtc_is_joiner_secondary(const struct intel_crtc_state *crtc_state);
 bool intel_crtc_is_joiner_primary(const struct intel_crtc_state *crtc_state);
 bool intel_crtc_is_bigjoiner_primary(const struct intel_crtc_state *crtc_state);
 bool intel_crtc_is_bigjoiner_secondary(const struct intel_crtc_state *crtc_state);
+bool intel_crtc_is_ultrajoiner(const struct intel_crtc_state *crtc_state);
+bool intel_crtc_is_ultrajoiner_primary(const struct intel_crtc_state *crtc_state);
+bool intel_crtc_ultrajoiner_enable_needed(const struct intel_crtc_state *crtc_state);
 u8 intel_crtc_joiner_secondary_pipes(const struct intel_crtc_state *crtc_state);
 u8 _intel_modeset_primary_pipes(const struct intel_crtc_state *crtc_state);
 u8 _intel_modeset_secondary_pipes(const struct intel_crtc_state *crtc_state);

diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 208f117ece57e54c3939a4e0d5b98faba6a736bf..40525f5c4c4290e086ffa4422a61c97efe20cec4 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -385,9 +385,9 @@ static int intel_dsc_get_vdsc_per_pipe(const struct intel_crtc_state *crtc_state
 int intel_dsc_get_num_vdsc_instances(const struct intel_crtc_state *crtc_state)
 {
        int num_vdsc_instances = intel_dsc_get_vdsc_per_pipe(crtc_state);
+       int num_joined_pipes = intel_crtc_num_joined_pipes(crtc_state);
 
-       if (crtc_state->joiner_pipes)
-               num_vdsc_instances *= 2;
+       num_vdsc_instances *= num_joined_pipes;
 
        return num_vdsc_instances;
 }
@@ -776,7 +776,14 @@ void intel_dsc_enable(const struct intel_crtc_state *crtc_state)
                dss_ctl1_val |= JOINER_ENABLE;
        }
        if (crtc_state->joiner_pipes) {
+               if (intel_crtc_ultrajoiner_enable_needed(crtc_state))
+                       dss_ctl1_val |= ULTRA_JOINER_ENABLE;
+
+               if (intel_crtc_is_ultrajoiner_primary(crtc_state))
+                       dss_ctl1_val |= PRIMARY_ULTRA_JOINER_ENABLE;
+
                dss_ctl1_val |= BIG_JOINER_ENABLE;
+
                if (intel_crtc_is_bigjoiner_primary(crtc_state))
                        dss_ctl1_val |= PRIMARY_BIG_JOINER_ENABLE;
        }