drm/i915: Change bigjoiner state tracking to use the pipe bitmask

Get rid of the inflexible bigjoiner_linked_crtc pointer thing
and just track things as a bitmask of pipes instead. We can
also nuke the bigjoiner_slave boolean as the role of the pipe
can be determined from its position in the bitmask.

It might be possible to nuke the bigjoiner boolean as well
if we make encoder.compute_config() do the bitmask assignment
directly for the master pipe. But for now I left that alone so
that encoer.compute_config() will just flag the state as needing
bigjoiner, and the intel_atomic_check_bigjoiner() is still
responsible for determining the bitmask. But that may have to change
as the encoder may be in the best position to determine how
exactly we should populate the bitmask.

Most places that just looked at the single bigjoiner_linked_crtc
now iterate over the whole bitmask, eliminating the singular
slave pipe assumption.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220203183823.22890-11-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>

1 files changed, 0 insertions, 43 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index b83b59cf2b78..545eff5bf158 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -1107,18 +1107,6 @@ static i915_reg_t dss_ctl2_reg(struct intel_crtc *crtc, enum transcoder cpu_tran
 		ICL_PIPE_DSS_CTL2(crtc->pipe) : DSS_CTL2;
 }
 
-struct intel_crtc *
-intel_dsc_get_bigjoiner_secondary(const struct intel_crtc *primary_crtc)
-{
-	return intel_crtc_for_pipe(to_i915(primary_crtc->base.dev), primary_crtc->pipe + 1);
-}
-
-static struct intel_crtc *
-intel_dsc_get_bigjoiner_primary(const struct intel_crtc *secondary_crtc)
-{
-	return intel_crtc_for_pipe(to_i915(secondary_crtc->base.dev), secondary_crtc->pipe - 1);
-}
-
 void intel_uncompressed_joiner_enable(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
@@ -1174,25 +1162,6 @@ void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state)
 	}
 }
 
-void intel_uncompressed_joiner_get_config(struct intel_crtc_state *crtc_state)
-{
-	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-	u32 dss_ctl1;
-
-	dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc, crtc_state->cpu_transcoder));
-	if (dss_ctl1 & UNCOMPRESSED_JOINER_MASTER) {
-		crtc_state->bigjoiner = true;
-		crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_secondary(crtc);
-		drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc);
-	} else if (dss_ctl1 & UNCOMPRESSED_JOINER_SLAVE) {
-		crtc_state->bigjoiner = true;
-		crtc_state->bigjoiner_slave = true;
-		crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_primary(crtc);
-		drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc);
-	}
-}
-
 void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
 {
 	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
@@ -1223,18 +1192,6 @@ void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
 	crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE) &&
 		(dss_ctl1 & JOINER_ENABLE);
 
-	if (dss_ctl1 & BIG_JOINER_ENABLE) {
-		crtc_state->bigjoiner = true;
-
-		if (!(dss_ctl1 & MASTER_BIG_JOINER_ENABLE)) {
-			crtc_state->bigjoiner_slave = true;
-			crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_primary(crtc);
-		} else {
-			crtc_state->bigjoiner_linked_crtc = intel_dsc_get_bigjoiner_secondary(crtc);
-		}
-		drm_WARN_ON(&dev_priv->drm, !crtc_state->bigjoiner_linked_crtc);
-	}
-
 	/* FIXME: add more state readout as needed */
 
 	/* PPS1 */