Message-Id: <20241009-sm8650-v6-11-hmd-pocf-mdss-quad-upstream-21-v2-4-76d4f5d413bf@linaro.org>
Date: Wed, 09 Oct 2024 16:50:17 +0800
From: Jun Nie <jun.nie@...aro.org>
To: Rob Clark <robdclark@...il.com>, 
 Abhinav Kumar <quic_abhinavk@...cinc.com>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>, 
 Marijn Suijten <marijn.suijten@...ainline.org>, 
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Jun Nie <jun.nie@...aro.org>
Subject: [PATCH v2 04/14] drm/msm/dpu: switch RM to use crtc_id rather than
 enc_id for allocation

Up to now the driver has been using encoder to allocate hardware resources.
Switch it to use CRTC id so that mixer number can be known in
dpu_plane_virtual_assign_resources() via CRTC id for sspp alloation.

Because the mixer allocation is done in drm_atomic_helper_check_modeset()
as part of CRTC operation. While the sspp assignment is in
drm_atomic_helper_check_planes() call tree. So CRTC is more central
than encoder. Siwtching the id achieves above goal.

Co-developed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Jun Nie <jun.nie@...aro.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c |  18 +--
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h     |  12 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c      | 189 ++++++++++++++--------------
 drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h      |  19 ++-
 4 files changed, 116 insertions(+), 122 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index e8400b494687c..bd2509985c4d0 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -687,11 +687,11 @@ static int dpu_encoder_virt_atomic_check(
 	 * Dont allocate when active is false.
 	 */
 	if (drm_atomic_crtc_needs_modeset(crtc_state)) {
-		dpu_rm_release(global_state, drm_enc);
+		dpu_rm_release(global_state, crtc_state->crtc);
 
 		if (!crtc_state->active_changed || crtc_state->enable)
 			ret = dpu_rm_reserve(&dpu_kms->rm, global_state,
-					drm_enc, crtc_state, topology);
+					crtc_state->crtc, topology);
 	}
 
 	trace_dpu_enc_atomic_check_flags(DRMID(drm_enc), adj_mode->flags);
@@ -1125,14 +1125,14 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
 
 	/* Query resource that have been reserved in atomic check step. */
 	num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
-		drm_enc->base.id, DPU_HW_BLK_PINGPONG, hw_pp,
+		drm_enc->crtc, DPU_HW_BLK_PINGPONG, hw_pp,
 		ARRAY_SIZE(hw_pp));
 	num_ctl = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
-		drm_enc->base.id, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl));
+		drm_enc->crtc, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl));
 	num_lm = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
-		drm_enc->base.id, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm));
+		drm_enc->crtc, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm));
 	dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
-		drm_enc->base.id, DPU_HW_BLK_DSPP, hw_dspp,
+		drm_enc->crtc, DPU_HW_BLK_DSPP, hw_dspp,
 		ARRAY_SIZE(hw_dspp));
 
 	for (i = 0; i < MAX_CHANNELS_PER_ENC; i++)
@@ -1140,7 +1140,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
 						: NULL;
 
 	num_dsc = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
-						drm_enc->base.id, DPU_HW_BLK_DSC,
+						drm_enc->crtc, DPU_HW_BLK_DSC,
 						hw_dsc, ARRAY_SIZE(hw_dsc));
 	for (i = 0; i < num_dsc; i++) {
 		dpu_enc->hw_dsc[i] = to_dpu_hw_dsc(hw_dsc[i]);
@@ -1154,7 +1154,7 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
 		struct dpu_hw_blk *hw_cdm = NULL;
 
 		dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
-					      drm_enc->base.id, DPU_HW_BLK_CDM,
+					      drm_enc->crtc, DPU_HW_BLK_CDM,
 					      &hw_cdm, 1);
 		dpu_enc->cur_master->hw_cdm = hw_cdm ? to_dpu_hw_cdm(hw_cdm) : NULL;
 	}
@@ -2030,7 +2030,7 @@ static void dpu_encoder_helper_reset_mixers(struct dpu_encoder_phys *phys_enc)
 	global_state = dpu_kms_get_existing_global_state(phys_enc->dpu_kms);
 
 	num_lm = dpu_rm_get_assigned_resources(&phys_enc->dpu_kms->rm, global_state,
-		phys_enc->parent->base.id, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm));
+		phys_enc->parent->crtc, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm));
 
 	for (i = 0; i < num_lm; i++) {
 		hw_mixer[i] = to_dpu_hw_mixer(hw_lm[i]);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 1952576600575..4f0fa1596b414 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -134,12 +134,12 @@ struct dpu_global_state {
 
 	struct dpu_rm *rm;
 
-	uint32_t pingpong_to_enc_id[PINGPONG_MAX - PINGPONG_0];
-	uint32_t mixer_to_enc_id[LM_MAX - LM_0];
-	uint32_t ctl_to_enc_id[CTL_MAX - CTL_0];
-	uint32_t dspp_to_enc_id[DSPP_MAX - DSPP_0];
-	uint32_t dsc_to_enc_id[DSC_MAX - DSC_0];
-	uint32_t cdm_to_enc_id;
+	uint32_t pingpong_to_crtc_id[PINGPONG_MAX - PINGPONG_0];
+	uint32_t mixer_to_crtc_id[LM_MAX - LM_0];
+	uint32_t ctl_to_crtc_id[CTL_MAX - CTL_0];
+	uint32_t dspp_to_crtc_id[DSPP_MAX - DSPP_0];
+	uint32_t dsc_to_crtc_id[DSC_MAX - DSC_0];
+	uint32_t cdm_to_crtc_id;
 
 	uint32_t sspp_to_crtc_id[SSPP_MAX - SSPP_NONE];
 };
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
index 5c9bb64df7930..a6e1eb888f6c8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c
@@ -21,9 +21,9 @@
 
 
 static inline bool reserved_by_other(uint32_t *res_map, int idx,
-				     uint32_t enc_id)
+				     uint32_t crtc_id)
 {
-	return res_map[idx] && res_map[idx] != enc_id;
+	return res_map[idx] && res_map[idx] != crtc_id;
 }
 
 /**
@@ -225,7 +225,7 @@ static int _dpu_rm_get_lm_peer(struct dpu_rm *rm, int primary_idx)
  *	pingpong
  * @rm: dpu resource manager handle
  * @global_state: resources shared across multiple kms objects
- * @enc_id: encoder id requesting for allocation
+ * @crtc_id: crtc id requesting for allocation
  * @lm_idx: index of proposed layer mixer in rm->mixer_blks[], function checks
  *      if lm, and all other hardwired blocks connected to the lm (pp) is
  *      available and appropriate
@@ -239,14 +239,14 @@ static int _dpu_rm_get_lm_peer(struct dpu_rm *rm, int primary_idx)
  */
 static bool _dpu_rm_check_lm_and_get_connected_blks(struct dpu_rm *rm,
 		struct dpu_global_state *global_state,
-		uint32_t enc_id, int lm_idx, int *pp_idx, int *dspp_idx,
+		uint32_t crtc_id, int lm_idx, int *pp_idx, int *dspp_idx,
 		struct dpu_rm_requirements *reqs)
 {
 	const struct dpu_lm_cfg *lm_cfg;
 	int idx;
 
 	/* Already reserved? */
-	if (reserved_by_other(global_state->mixer_to_enc_id, lm_idx, enc_id)) {
+	if (reserved_by_other(global_state->mixer_to_crtc_id, lm_idx, crtc_id)) {
 		DPU_DEBUG("lm %d already reserved\n", lm_idx + LM_0);
 		return false;
 	}
@@ -258,7 +258,7 @@ static bool _dpu_rm_check_lm_and_get_connected_blks(struct dpu_rm *rm,
 		return false;
 	}
 
-	if (reserved_by_other(global_state->pingpong_to_enc_id, idx, enc_id)) {
+	if (reserved_by_other(global_state->pingpong_to_crtc_id, idx, crtc_id)) {
 		DPU_DEBUG("lm %d pp %d already reserved\n", lm_cfg->id,
 				lm_cfg->pingpong);
 		return false;
@@ -274,7 +274,7 @@ static bool _dpu_rm_check_lm_and_get_connected_blks(struct dpu_rm *rm,
 		return false;
 	}
 
-	if (reserved_by_other(global_state->dspp_to_enc_id, idx, enc_id)) {
+	if (reserved_by_other(global_state->dspp_to_crtc_id, idx, crtc_id)) {
 		DPU_DEBUG("lm %d dspp %d already reserved\n", lm_cfg->id,
 				lm_cfg->dspp);
 		return false;
@@ -286,7 +286,7 @@ static bool _dpu_rm_check_lm_and_get_connected_blks(struct dpu_rm *rm,
 
 static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
 			       struct dpu_global_state *global_state,
-			       uint32_t enc_id,
+			       uint32_t crtc_id,
 			       struct dpu_rm_requirements *reqs)
 
 {
@@ -314,7 +314,7 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
 		lm_idx[lm_count] = i;
 
 		if (!_dpu_rm_check_lm_and_get_connected_blks(rm, global_state,
-				enc_id, i, &pp_idx[lm_count],
+				crtc_id, i, &pp_idx[lm_count],
 				&dspp_idx[lm_count], reqs)) {
 			continue;
 		}
@@ -333,7 +333,7 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
 				continue;
 
 			if (!_dpu_rm_check_lm_and_get_connected_blks(rm,
-					global_state, enc_id, j,
+					global_state, crtc_id, j,
 					&pp_idx[lm_count], &dspp_idx[lm_count],
 					reqs)) {
 				continue;
@@ -350,13 +350,16 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
 	}
 
 	for (i = 0; i < lm_count; i++) {
-		global_state->mixer_to_enc_id[lm_idx[i]] = enc_id;
-		global_state->pingpong_to_enc_id[pp_idx[i]] = enc_id;
-		global_state->dspp_to_enc_id[dspp_idx[i]] =
-			reqs->topology.num_dspp ? enc_id : 0;
+		global_state->mixer_to_crtc_id[lm_idx[i]] = crtc_id;
+		global_state->pingpong_to_crtc_id[pp_idx[i]] = crtc_id;
+		global_state->dspp_to_crtc_id[dspp_idx[i]] =
+			reqs->topology.num_dspp ? crtc_id : 0;
 
-		trace_dpu_rm_reserve_lms(lm_idx[i] + LM_0, enc_id,
+		trace_dpu_rm_reserve_lms(lm_idx[i] + LM_0, crtc_id,
 					 pp_idx[i] + PINGPONG_0);
+
+		DPU_DEBUG("reserve lm[%d]:%d, pp_idx[%d]:%d, dspp[%d]:%d for crtc_id %d\n",
+			  i, lm_idx[i], i, pp_idx[i], i, dspp_idx[i], crtc_id);
 	}
 
 	return 0;
@@ -365,7 +368,7 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm,
 static int _dpu_rm_reserve_ctls(
 		struct dpu_rm *rm,
 		struct dpu_global_state *global_state,
-		uint32_t enc_id,
+		uint32_t crtc_id,
 		const struct msm_display_topology *top)
 {
 	int ctl_idx[MAX_BLOCKS];
@@ -389,7 +392,7 @@ static int _dpu_rm_reserve_ctls(
 
 		if (!rm->ctl_blks[j])
 			continue;
-		if (reserved_by_other(global_state->ctl_to_enc_id, j, enc_id))
+		if (reserved_by_other(global_state->ctl_to_crtc_id, j, crtc_id))
 			continue;
 
 		ctl = to_dpu_hw_ctl(rm->ctl_blks[j]);
@@ -413,8 +416,8 @@ static int _dpu_rm_reserve_ctls(
 		return -ENAVAIL;
 
 	for (i = 0; i < ARRAY_SIZE(ctl_idx) && i < num_ctls; i++) {
-		global_state->ctl_to_enc_id[ctl_idx[i]] = enc_id;
-		trace_dpu_rm_reserve_ctls(i + CTL_0, enc_id);
+		global_state->ctl_to_crtc_id[ctl_idx[i]] = crtc_id;
+		trace_dpu_rm_reserve_ctls(i + CTL_0, crtc_id);
 	}
 
 	return 0;
@@ -422,12 +425,12 @@ static int _dpu_rm_reserve_ctls(
 
 static int _dpu_rm_pingpong_next_index(struct dpu_global_state *global_state,
 				       int start,
-				       uint32_t enc_id)
+				       uint32_t crtc_id)
 {
 	int i;
 
 	for (i = start; i < (PINGPONG_MAX - PINGPONG_0); i++) {
-		if (global_state->pingpong_to_enc_id[i] == enc_id)
+		if (global_state->pingpong_to_crtc_id[i] == crtc_id)
 			return i;
 	}
 
@@ -448,7 +451,7 @@ static int _dpu_rm_pingpong_dsc_check(int dsc_idx, int pp_idx)
 
 static int _dpu_rm_dsc_alloc(struct dpu_rm *rm,
 			     struct dpu_global_state *global_state,
-			     uint32_t enc_id,
+			     uint32_t crtc_id,
 			     const struct msm_display_topology *top)
 {
 	int num_dsc = 0;
@@ -461,10 +464,10 @@ static int _dpu_rm_dsc_alloc(struct dpu_rm *rm,
 		if (!rm->dsc_blks[dsc_idx])
 			continue;
 
-		if (reserved_by_other(global_state->dsc_to_enc_id, dsc_idx, enc_id))
+		if (reserved_by_other(global_state->dsc_to_crtc_id, dsc_idx, crtc_id))
 			continue;
 
-		pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx, enc_id);
+		pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx, crtc_id);
 		if (pp_idx < 0)
 			return -ENAVAIL;
 
@@ -472,7 +475,7 @@ static int _dpu_rm_dsc_alloc(struct dpu_rm *rm,
 		if (ret)
 			return -ENAVAIL;
 
-		global_state->dsc_to_enc_id[dsc_idx] = enc_id;
+		global_state->dsc_to_crtc_id[dsc_idx] = crtc_id;
 		num_dsc++;
 		pp_idx++;
 	}
@@ -488,7 +491,7 @@ static int _dpu_rm_dsc_alloc(struct dpu_rm *rm,
 
 static int _dpu_rm_dsc_alloc_pair(struct dpu_rm *rm,
 				  struct dpu_global_state *global_state,
-				  uint32_t enc_id,
+				  uint32_t crtc_id,
 				  const struct msm_display_topology *top)
 {
 	int num_dsc = 0;
@@ -503,11 +506,11 @@ static int _dpu_rm_dsc_alloc_pair(struct dpu_rm *rm,
 			continue;
 
 		/* consective dsc index to be paired */
-		if (reserved_by_other(global_state->dsc_to_enc_id, dsc_idx, enc_id) ||
-		    reserved_by_other(global_state->dsc_to_enc_id, dsc_idx + 1, enc_id))
+		if (reserved_by_other(global_state->dsc_to_crtc_id, dsc_idx, crtc_id) ||
+		    reserved_by_other(global_state->dsc_to_crtc_id, dsc_idx + 1, crtc_id))
 			continue;
 
-		pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx, enc_id);
+		pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx, crtc_id);
 		if (pp_idx < 0)
 			return -ENAVAIL;
 
@@ -517,7 +520,7 @@ static int _dpu_rm_dsc_alloc_pair(struct dpu_rm *rm,
 			continue;
 		}
 
-		pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx + 1, enc_id);
+		pp_idx = _dpu_rm_pingpong_next_index(global_state, pp_idx + 1, crtc_id);
 		if (pp_idx < 0)
 			return -ENAVAIL;
 
@@ -527,8 +530,8 @@ static int _dpu_rm_dsc_alloc_pair(struct dpu_rm *rm,
 			continue;
 		}
 
-		global_state->dsc_to_enc_id[dsc_idx] = enc_id;
-		global_state->dsc_to_enc_id[dsc_idx + 1] = enc_id;
+		global_state->dsc_to_crtc_id[dsc_idx] = crtc_id;
+		global_state->dsc_to_crtc_id[dsc_idx + 1] = crtc_id;
 		num_dsc += 2;
 		pp_idx++;	/* start for next pair */
 	}
@@ -544,11 +547,9 @@ static int _dpu_rm_dsc_alloc_pair(struct dpu_rm *rm,
 
 static int _dpu_rm_reserve_dsc(struct dpu_rm *rm,
 			       struct dpu_global_state *global_state,
-			       struct drm_encoder *enc,
+			       uint32_t crtc_id,
 			       const struct msm_display_topology *top)
 {
-	uint32_t enc_id = enc->base.id;
-
 	if (!top->num_dsc || !top->num_intf)
 		return 0;
 
@@ -558,22 +559,22 @@ static int _dpu_rm_reserve_dsc(struct dpu_rm *rm,
 	 * 2) DSC pair starts from even index, such as index(0,1), (2,3), etc
 	 * 3) even PINGPONG connects to even DSC
 	 * 4) odd PINGPONG connects to odd DSC
-	 * 5) pair: encoder +--> pp_idx_0 --> dsc_idx_0
+	 * 5) pair: crtc    +--> pp_idx_0 --> dsc_idx_0
 	 *                  +--> pp_idx_1 --> dsc_idx_1
 	 */
 
 	/* num_dsc should be either 1, 2 or 4 */
 	if (top->num_dsc > top->num_intf)	/* merge mode */
-		return _dpu_rm_dsc_alloc_pair(rm, global_state, enc_id, top);
+		return _dpu_rm_dsc_alloc_pair(rm, global_state, crtc_id, top);
 	else
-		return _dpu_rm_dsc_alloc(rm, global_state, enc_id, top);
+		return _dpu_rm_dsc_alloc(rm, global_state, crtc_id, top);
 
 	return 0;
 }
 
 static int _dpu_rm_reserve_cdm(struct dpu_rm *rm,
 			       struct dpu_global_state *global_state,
-			       struct drm_encoder *enc)
+			       uint32_t crtc_id)
 {
 	/* try allocating only one CDM block */
 	if (!rm->cdm_blk) {
@@ -581,12 +582,12 @@ static int _dpu_rm_reserve_cdm(struct dpu_rm *rm,
 		return -EIO;
 	}
 
-	if (global_state->cdm_to_enc_id) {
+	if (global_state->cdm_to_crtc_id) {
 		DPU_ERROR("CDM_0 is already allocated\n");
 		return -EIO;
 	}
 
-	global_state->cdm_to_enc_id = enc->base.id;
+	global_state->cdm_to_crtc_id = crtc_id;
 
 	return 0;
 }
@@ -594,30 +595,30 @@ static int _dpu_rm_reserve_cdm(struct dpu_rm *rm,
 static int _dpu_rm_make_reservation(
 		struct dpu_rm *rm,
 		struct dpu_global_state *global_state,
-		struct drm_encoder *enc,
+		uint32_t crtc_id,
 		struct dpu_rm_requirements *reqs)
 {
 	int ret;
 
-	ret = _dpu_rm_reserve_lms(rm, global_state, enc->base.id, reqs);
+	ret = _dpu_rm_reserve_lms(rm, global_state, crtc_id, reqs);
 	if (ret) {
 		DPU_ERROR("unable to find appropriate mixers\n");
 		return ret;
 	}
 
-	ret = _dpu_rm_reserve_ctls(rm, global_state, enc->base.id,
+	ret = _dpu_rm_reserve_ctls(rm, global_state, crtc_id,
 				&reqs->topology);
 	if (ret) {
 		DPU_ERROR("unable to find appropriate CTL\n");
 		return ret;
 	}
 
-	ret  = _dpu_rm_reserve_dsc(rm, global_state, enc, &reqs->topology);
+	ret  = _dpu_rm_reserve_dsc(rm, global_state, crtc_id, &reqs->topology);
 	if (ret)
 		return ret;
 
 	if (reqs->topology.needs_cdm) {
-		ret = _dpu_rm_reserve_cdm(rm, global_state, enc);
+		ret = _dpu_rm_reserve_cdm(rm, global_state, crtc_id);
 		if (ret) {
 			DPU_ERROR("unable to find CDM blk\n");
 			return ret;
@@ -628,7 +629,7 @@ static int _dpu_rm_make_reservation(
 }
 
 static int _dpu_rm_populate_requirements(
-		struct drm_encoder *enc,
+		struct drm_crtc *crtc,
 		struct dpu_rm_requirements *reqs,
 		struct msm_display_topology req_topology)
 {
@@ -642,66 +643,59 @@ static int _dpu_rm_populate_requirements(
 }
 
 static void _dpu_rm_clear_mapping(uint32_t *res_mapping, int cnt,
-				  uint32_t enc_id)
+				  uint32_t crtc_id)
 {
 	int i;
 
 	for (i = 0; i < cnt; i++) {
-		if (res_mapping[i] == enc_id)
+		if (res_mapping[i] == crtc_id)
 			res_mapping[i] = 0;
 	}
 }
 
 void dpu_rm_release(struct dpu_global_state *global_state,
-		    struct drm_encoder *enc)
+		    struct drm_crtc *crtc)
 {
-	_dpu_rm_clear_mapping(global_state->pingpong_to_enc_id,
-		ARRAY_SIZE(global_state->pingpong_to_enc_id), enc->base.id);
-	_dpu_rm_clear_mapping(global_state->mixer_to_enc_id,
-		ARRAY_SIZE(global_state->mixer_to_enc_id), enc->base.id);
-	_dpu_rm_clear_mapping(global_state->ctl_to_enc_id,
-		ARRAY_SIZE(global_state->ctl_to_enc_id), enc->base.id);
-	_dpu_rm_clear_mapping(global_state->dsc_to_enc_id,
-		ARRAY_SIZE(global_state->dsc_to_enc_id), enc->base.id);
-	_dpu_rm_clear_mapping(global_state->dspp_to_enc_id,
-		ARRAY_SIZE(global_state->dspp_to_enc_id), enc->base.id);
-	_dpu_rm_clear_mapping(&global_state->cdm_to_enc_id, 1, enc->base.id);
+	uint32_t crtc_id = crtc->base.id;
+
+	_dpu_rm_clear_mapping(global_state->pingpong_to_crtc_id,
+		ARRAY_SIZE(global_state->pingpong_to_crtc_id), crtc_id);
+	_dpu_rm_clear_mapping(global_state->mixer_to_crtc_id,
+		ARRAY_SIZE(global_state->mixer_to_crtc_id), crtc_id);
+	_dpu_rm_clear_mapping(global_state->ctl_to_crtc_id,
+		ARRAY_SIZE(global_state->ctl_to_crtc_id), crtc_id);
+	_dpu_rm_clear_mapping(global_state->dsc_to_crtc_id,
+		ARRAY_SIZE(global_state->dsc_to_crtc_id), crtc_id);
+	_dpu_rm_clear_mapping(global_state->dspp_to_crtc_id,
+		ARRAY_SIZE(global_state->dspp_to_crtc_id), crtc_id);
 }
 
 int dpu_rm_reserve(
 		struct dpu_rm *rm,
 		struct dpu_global_state *global_state,
-		struct drm_encoder *enc,
-		struct drm_crtc_state *crtc_state,
+		struct drm_crtc *crtc,
 		struct msm_display_topology topology)
 {
 	struct dpu_rm_requirements reqs;
 	int ret;
 
-	/* Check if this is just a page-flip */
-	if (!drm_atomic_crtc_needs_modeset(crtc_state))
-		return 0;
-
 	if (IS_ERR(global_state)) {
 		DPU_ERROR("failed to global state\n");
 		return PTR_ERR(global_state);
 	}
 
-	DRM_DEBUG_KMS("reserving hw for enc %d crtc %d\n",
-		      enc->base.id, crtc_state->crtc->base.id);
+	DRM_DEBUG_KMS("reserving hw for crtc %d\n", crtc->base.id);
 
-	ret = _dpu_rm_populate_requirements(enc, &reqs, topology);
+	ret = _dpu_rm_populate_requirements(crtc, &reqs, topology);
 	if (ret) {
 		DPU_ERROR("failed to populate hw requirements\n");
 		return ret;
 	}
 
-	ret = _dpu_rm_make_reservation(rm, global_state, enc, &reqs);
+	ret = _dpu_rm_make_reservation(rm, global_state, crtc->base.id, &reqs);
 	if (ret)
 		DPU_ERROR("failed to reserve hw resources: %d\n", ret);
 
-
-
 	return ret;
 }
 
@@ -798,42 +792,43 @@ static char *dpu_hw_blk_type_name[] = {
 };
 
 int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
-	struct dpu_global_state *global_state, uint32_t enc_id,
+	struct dpu_global_state *global_state, struct drm_crtc *crtc,
 	enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size)
 {
+	uint32_t crtc_id = crtc->base.id;
 	struct dpu_hw_blk **hw_blks;
-	uint32_t *hw_to_enc_id;
+	uint32_t *hw_to_crtc_id;
 	int i, num_blks, max_blks;
 
 	switch (type) {
 	case DPU_HW_BLK_PINGPONG:
 		hw_blks = rm->pingpong_blks;
-		hw_to_enc_id = global_state->pingpong_to_enc_id;
+		hw_to_crtc_id = global_state->pingpong_to_crtc_id;
 		max_blks = ARRAY_SIZE(rm->pingpong_blks);
 		break;
 	case DPU_HW_BLK_LM:
 		hw_blks = rm->mixer_blks;
-		hw_to_enc_id = global_state->mixer_to_enc_id;
+		hw_to_crtc_id = global_state->mixer_to_crtc_id;
 		max_blks = ARRAY_SIZE(rm->mixer_blks);
 		break;
 	case DPU_HW_BLK_CTL:
 		hw_blks = rm->ctl_blks;
-		hw_to_enc_id = global_state->ctl_to_enc_id;
+		hw_to_crtc_id = global_state->ctl_to_crtc_id;
 		max_blks = ARRAY_SIZE(rm->ctl_blks);
 		break;
 	case DPU_HW_BLK_DSPP:
 		hw_blks = rm->dspp_blks;
-		hw_to_enc_id = global_state->dspp_to_enc_id;
+		hw_to_crtc_id = global_state->dspp_to_crtc_id;
 		max_blks = ARRAY_SIZE(rm->dspp_blks);
 		break;
 	case DPU_HW_BLK_DSC:
 		hw_blks = rm->dsc_blks;
-		hw_to_enc_id = global_state->dsc_to_enc_id;
+		hw_to_crtc_id = global_state->dsc_to_crtc_id;
 		max_blks = ARRAY_SIZE(rm->dsc_blks);
 		break;
 	case DPU_HW_BLK_CDM:
 		hw_blks = &rm->cdm_blk;
-		hw_to_enc_id = &global_state->cdm_to_enc_id;
+		hw_to_crtc_id = &global_state->cdm_to_crtc_id;
 		max_blks = 1;
 		break;
 	default:
@@ -843,17 +838,17 @@ int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
 
 	num_blks = 0;
 	for (i = 0; i < max_blks; i++) {
-		if (hw_to_enc_id[i] != enc_id)
+		if (hw_to_crtc_id[i] != crtc_id)
 			continue;
 
 		if (num_blks == blks_size) {
-			DPU_ERROR("More than %d %s assigned to enc %d\n",
-				  blks_size, dpu_hw_blk_type_name[type], enc_id);
+			DPU_ERROR("More than %d resources assigned to crtc %d\n",
+				  blks_size, crtc_id);
 			break;
 		}
 		if (!hw_blks[i]) {
-			DPU_ERROR("%s unavailable to assign to enc %d\n",
-				  dpu_hw_blk_type_name[type], enc_id);
+			DPU_ERROR("%s unavailable to assign to crtc %d\n",
+				  dpu_hw_blk_type_name[type], crtc_id);
 			break;
 		}
 		blks[num_blks++] = hw_blks[i];
@@ -883,38 +878,38 @@ void dpu_rm_print_state(struct drm_printer *p,
 
 	drm_puts(p, "resource mapping:\n");
 	drm_puts(p, "\tpingpong=");
-	for (i = 0; i < ARRAY_SIZE(global_state->pingpong_to_enc_id); i++)
+	for (i = 0; i < ARRAY_SIZE(global_state->pingpong_to_crtc_id); i++)
 		dpu_rm_print_state_helper(p, rm->pingpong_blks[i],
-					  global_state->pingpong_to_enc_id[i]);
+					  global_state->pingpong_to_crtc_id[i]);
 	drm_puts(p, "\n");
 
 	drm_puts(p, "\tmixer=");
-	for (i = 0; i < ARRAY_SIZE(global_state->mixer_to_enc_id); i++)
+	for (i = 0; i < ARRAY_SIZE(global_state->mixer_to_crtc_id); i++)
 		dpu_rm_print_state_helper(p, rm->mixer_blks[i],
-					  global_state->mixer_to_enc_id[i]);
+					  global_state->mixer_to_crtc_id[i]);
 	drm_puts(p, "\n");
 
 	drm_puts(p, "\tctl=");
-	for (i = 0; i < ARRAY_SIZE(global_state->ctl_to_enc_id); i++)
+	for (i = 0; i < ARRAY_SIZE(global_state->ctl_to_crtc_id); i++)
 		dpu_rm_print_state_helper(p, rm->ctl_blks[i],
-					  global_state->ctl_to_enc_id[i]);
+					  global_state->ctl_to_crtc_id[i]);
 	drm_puts(p, "\n");
 
 	drm_puts(p, "\tdspp=");
-	for (i = 0; i < ARRAY_SIZE(global_state->dspp_to_enc_id); i++)
+	for (i = 0; i < ARRAY_SIZE(global_state->dspp_to_crtc_id); i++)
 		dpu_rm_print_state_helper(p, rm->dspp_blks[i],
-					  global_state->dspp_to_enc_id[i]);
+					  global_state->dspp_to_crtc_id[i]);
 	drm_puts(p, "\n");
 
 	drm_puts(p, "\tdsc=");
-	for (i = 0; i < ARRAY_SIZE(global_state->dsc_to_enc_id); i++)
+	for (i = 0; i < ARRAY_SIZE(global_state->dsc_to_crtc_id); i++)
 		dpu_rm_print_state_helper(p, rm->dsc_blks[i],
-					  global_state->dsc_to_enc_id[i]);
+					  global_state->dsc_to_crtc_id[i]);
 	drm_puts(p, "\n");
 
 	drm_puts(p, "\tcdm=");
 	dpu_rm_print_state_helper(p, rm->cdm_blk,
-				  global_state->cdm_to_enc_id);
+				  global_state->cdm_to_crtc_id);
 	drm_puts(p, "\n");
 
 	drm_puts(p, "\tsspp=");
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
index c51c5a9255ce6..720e2c64effbf 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h
@@ -68,26 +68,25 @@ int dpu_rm_init(struct drm_device *dev,
  *	HW blocks can then be accessed through dpu_rm_get_* functions.
  *	HW Reservations should be released via dpu_rm_release_hw.
  * @rm: DPU Resource Manager handle
- * @drm_enc: DRM Encoder handle
- * @crtc_state: Proposed Atomic DRM CRTC State handle
+ * @crtc: DRM CRTC handle
  * @topology: Pointer to topology info for the display
  * @Return: 0 on Success otherwise -ERROR
  */
-int dpu_rm_reserve(struct dpu_rm *rm,
+int dpu_rm_reserve(
+		struct dpu_rm *rm,
 		struct dpu_global_state *global_state,
-		struct drm_encoder *drm_enc,
-		struct drm_crtc_state *crtc_state,
+		struct drm_crtc *crtc,
 		struct msm_display_topology topology);
 
 /**
- * dpu_rm_reserve - Given the encoder for the display chain, release any
+ * dpu_rm_reserve - Given the crtc for the display chain, release any
  *	HW blocks previously reserved for that use case.
  * @rm: DPU Resource Manager handle
- * @enc: DRM Encoder handle
+ * @crtc: DRM CRTC handle
  * @Return: 0 on Success otherwise -ERROR
  */
 void dpu_rm_release(struct dpu_global_state *global_state,
-		struct drm_encoder *enc);
+		struct drm_crtc *crtc);
 
 /**
  * dpu_rm_reserve_sspp - Reserve the required SSPP for the provided CRTC
@@ -111,10 +110,10 @@ void dpu_rm_release_all_sspp(struct dpu_global_state *global_state,
 			     struct drm_crtc *crtc);
 
 /**
- * Get hw resources of the given type that are assigned to this encoder.
+ * Get hw resources of the given type that are assigned to this crtc.
  */
 int dpu_rm_get_assigned_resources(struct dpu_rm *rm,
-	struct dpu_global_state *global_state, uint32_t enc_id,
+	struct dpu_global_state *global_state, struct drm_crtc *crtc,
 	enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size);
 
 /**

-- 
2.34.1

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