[PATCH 05/14] drm/i915: Add some essential functionality for joiners

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From: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>

In most of the cases we now try to avoid mentioning things like
"bigjoiner" or "ultrajoiner" trying to unify the API and refer
mostly to all this functionality as "joiner".
In majority cases that should be way to go.
However in some cases we still need to distinguish between
bigjoiner primaries and secondaries(such as DSC register programming).

Create correspondent helper functions and start using them,
in order be prepared for adding ultrajoiner functionality.

v2: Fixed checkpatch warnings (Ankit)
v3: Introduce ultrajoiner helpers in next patch.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
---
 .../gpu/drm/i915/display/intel_atomic_plane.c |  2 +-
 drivers/gpu/drm/i915/display/intel_display.c  | 52 +++++++++++++++++--
 drivers/gpu/drm/i915/display/intel_display.h  |  6 ++-
 .../drm/i915/display/intel_modeset_verify.c   |  2 +-
 drivers/gpu/drm/i915/display/intel_vdsc.c     |  4 +-
 5 files changed, 56 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
index 928d985f9985..83ed018b1735 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c
@@ -725,7 +725,7 @@ int intel_plane_atomic_check(struct intel_atomic_state *state,
 
 	if (new_crtc_state && intel_crtc_is_joiner_secondary(new_crtc_state)) {
 		struct intel_crtc *primary_crtc =
-			intel_primary_crtc(new_crtc_state);
+			intel_joiner_primary_crtc(new_crtc_state);
 		struct intel_plane *primary_crtc_plane =
 			intel_crtc_get_plane(primary_crtc, plane->id);
 
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 257e479310c2..3278debf47cc 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -254,6 +254,50 @@ static enum pipe joiner_primary_pipe(const struct intel_crtc_state *crtc_state)
 	return ffs(crtc_state->joiner_pipes) - 1;
 }
 
+static bool intel_is_joiner(const struct intel_crtc_state *crtc_state)
+{
+	return intel_joiner_num_pipes(crtc_state) > 1;
+}
+
+static u8 bigjoiner_primary_pipes(const struct intel_crtc_state *crtc_state)
+{
+	int lsb = ffs(crtc_state->joiner_pipes) - 1;
+	int msb = fls(crtc_state->joiner_pipes) - 1;
+	int i;
+	u8 bigjoiner_primary_mask = 0;
+
+	for (i = lsb; i < msb; i += 4) {
+		/*
+		 * Regardless of how joiner_pipes mask is set, currently
+		 * we always assume, that primary pipe bit goes before secondary
+		 * pipe bit. So in each set of 2 bits, least significant bit is
+		 * bigjoiner primary pipe and most significant bit is secondary pipe.
+		 */
+		bigjoiner_primary_mask |=
+			((BIT(0) | BIT(2)) << i) & crtc_state->joiner_pipes;
+	}
+
+	return bigjoiner_primary_mask;
+}
+
+bool intel_crtc_is_bigjoiner_primary(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+
+	if (!intel_is_joiner(crtc_state))
+		return false;
+
+	return BIT(crtc->pipe) & bigjoiner_primary_pipes(crtc_state);
+}
+
+bool intel_crtc_is_bigjoiner_secondary(const struct intel_crtc_state *crtc_state)
+{
+	if (!intel_is_joiner(crtc_state))
+		return false;
+
+	return !intel_crtc_is_bigjoiner_primary(crtc_state);
+}
+
 u8 intel_crtc_joiner_secondary_pipes(const struct intel_crtc_state *crtc_state)
 {
 	if (crtc_state->joiner_pipes)
@@ -290,7 +334,7 @@ u8 intel_crtc_joined_pipe_mask(const struct intel_crtc_state *crtc_state)
 	return BIT(crtc->pipe) | crtc_state->joiner_pipes;
 }
 
-struct intel_crtc *intel_primary_crtc(const struct intel_crtc_state *crtc_state)
+struct intel_crtc *intel_joiner_primary_crtc(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_display *display = to_intel_display(crtc_state);
 
@@ -810,7 +854,7 @@ intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
 	int num_encoders = 0;
 	int i;
 
-	primary_crtc = intel_primary_crtc(crtc_state);
+	primary_crtc = intel_joiner_primary_crtc(crtc_state);
 
 	for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
 		if (connector_state->crtc != &primary_crtc->base)
@@ -4530,7 +4574,7 @@ copy_joiner_crtc_state_nomodeset(struct intel_atomic_state *state,
 {
 	struct intel_crtc_state *secondary_crtc_state =
 		intel_atomic_get_new_crtc_state(state, secondary_crtc);
-	struct intel_crtc *primary_crtc = intel_primary_crtc(secondary_crtc_state);
+	struct intel_crtc *primary_crtc = intel_joiner_primary_crtc(secondary_crtc_state);
 	const struct intel_crtc_state *primary_crtc_state =
 		intel_atomic_get_new_crtc_state(state, primary_crtc);
 
@@ -4550,7 +4594,7 @@ copy_joiner_crtc_state_modeset(struct intel_atomic_state *state,
 {
 	struct intel_crtc_state *secondary_crtc_state =
 		intel_atomic_get_new_crtc_state(state, secondary_crtc);
-	struct intel_crtc *primary_crtc = intel_primary_crtc(secondary_crtc_state);
+	struct intel_crtc *primary_crtc = intel_joiner_primary_crtc(secondary_crtc_state);
 	const struct intel_crtc_state *primary_crtc_state =
 		intel_atomic_get_new_crtc_state(state, primary_crtc);
 	struct intel_crtc_state *saved_state;
diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
index c0f8bb7e5095..840a98947de8 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -424,10 +424,12 @@ enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port);
 bool is_trans_port_sync_mode(const struct intel_crtc_state *state);
 bool is_trans_port_sync_master(const struct intel_crtc_state *state);
 u8 intel_crtc_joined_pipe_mask(const struct intel_crtc_state *crtc_state);
-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_joiner_secondary(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);
 u8 intel_crtc_joiner_secondary_pipes(const struct intel_crtc_state *crtc_state);
-struct intel_crtc *intel_primary_crtc(const struct intel_crtc_state *crtc_state);
+struct intel_crtc *intel_joiner_primary_crtc(const struct intel_crtc_state *crtc_state);
 bool intel_crtc_get_pipe_config(struct intel_crtc_state *crtc_state);
 bool intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 			       const struct intel_crtc_state *pipe_config,
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_verify.c b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
index 3491db5cad31..b53b810c6470 100644
--- a/drivers/gpu/drm/i915/display/intel_modeset_verify.c
+++ b/drivers/gpu/drm/i915/display/intel_modeset_verify.c
@@ -193,7 +193,7 @@ verify_crtc_state(struct intel_atomic_state *state,
 			"transitional active state does not match atomic hw state (expected %i, found %i)\n",
 			sw_crtc_state->hw.active, crtc->active);
 
-	primary_crtc = intel_primary_crtc(sw_crtc_state);
+	primary_crtc = intel_joiner_primary_crtc(sw_crtc_state);
 
 	for_each_encoder_on_crtc(dev, &primary_crtc->base, encoder) {
 		enum pipe pipe;
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 2e849b015e74..8158e3702ed5 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -742,7 +742,7 @@ void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state)
 	u32 dss_ctl1_val = 0;
 
 	if (crtc_state->joiner_pipes && !crtc_state->dsc.compression_enable) {
-		if (intel_crtc_is_joiner_secondary(crtc_state))
+		if (intel_crtc_is_bigjoiner_secondary(crtc_state))
 			dss_ctl1_val |= UNCOMPRESSED_JOINER_SECONDARY;
 		else
 			dss_ctl1_val |= UNCOMPRESSED_JOINER_PRIMARY;
@@ -771,7 +771,7 @@ void intel_dsc_enable(const struct intel_crtc_state *crtc_state)
 	}
 	if (crtc_state->joiner_pipes) {
 		dss_ctl1_val |= BIG_JOINER_ENABLE;
-		if (!intel_crtc_is_joiner_secondary(crtc_state))
+		if (intel_crtc_is_bigjoiner_primary(crtc_state))
 			dss_ctl1_val |= PRIMARY_BIG_JOINER_ENABLE;
 	}
 	intel_de_write(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder), dss_ctl1_val);
-- 
2.45.2




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