Re: [PATCH 6/7] drm/msm/dpu: switch dpu_encoder to use atomic_mode_set

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On 2/3/2022 12:26 AM, Dmitry Baryshkov wrote:
Make dpu_encoder use atomic_mode_set to receive connector and CRTC
states as arguments rather than finding connector and CRTC by manually
looping through the respective lists.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

Nice cleanup !!

Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c   | 37 +++++--------------
  .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h  |  8 ++--
  .../drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c  | 18 ++-------
  .../drm/msm/disp/dpu1/dpu_encoder_phys_vid.c  | 14 ++-----
  4 files changed, 21 insertions(+), 56 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index e1c43a0c0643..1462c426c14c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -930,16 +930,13 @@ static int dpu_encoder_resource_control(struct drm_encoder *drm_enc,
  	return 0;
  }
-static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,
-				      struct drm_display_mode *mode,
-				      struct drm_display_mode *adj_mode)
+static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
+					     struct drm_crtc_state *crtc_state,
+					     struct drm_connector_state *conn_state)
  {
  	struct dpu_encoder_virt *dpu_enc;
  	struct msm_drm_private *priv;
  	struct dpu_kms *dpu_kms;
-	struct list_head *connector_list;
-	struct drm_connector *conn = NULL, *conn_iter;
-	struct drm_crtc *drm_crtc;
  	struct dpu_crtc_state *cstate;
  	struct dpu_global_state *global_state;
  	struct dpu_hw_blk *hw_pp[MAX_CHANNELS_PER_ENC];
@@ -959,7 +956,6 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,
priv = drm_enc->dev->dev_private;
  	dpu_kms = to_dpu_kms(priv->kms);
-	connector_list = &dpu_kms->dev->mode_config.connector_list;
global_state = dpu_kms_get_existing_global_state(dpu_kms);
  	if (IS_ERR_OR_NULL(global_state)) {
@@ -969,22 +965,6 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,
trace_dpu_enc_mode_set(DRMID(drm_enc)); - list_for_each_entry(conn_iter, connector_list, head)
-		if (conn_iter->encoder == drm_enc)
-			conn = conn_iter;
-
-	if (!conn) {
-		DPU_ERROR_ENC(dpu_enc, "failed to find attached connector\n");
-		return;
-	} else if (!conn->state) {
-		DPU_ERROR_ENC(dpu_enc, "invalid connector state\n");
-		return;
-	}
-
-	drm_for_each_crtc(drm_crtc, drm_enc->dev)
-		if (drm_crtc->state->encoder_mask & drm_encoder_mask(drm_enc))
-			break;
-
  	/* 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,
@@ -1001,7 +981,7 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,
  		dpu_enc->hw_pp[i] = i < num_pp ? to_dpu_hw_pingpong(hw_pp[i])
  						: NULL;
- cstate = to_dpu_crtc_state(drm_crtc->state);
+	cstate = to_dpu_crtc_state(crtc_state);
for (i = 0; i < num_lm; i++) {
  		int ctl_idx = (i < num_ctl) ? i : (num_ctl-1);
@@ -1050,9 +1030,10 @@ static void dpu_encoder_virt_mode_set(struct drm_encoder *drm_enc,
  			return;
  		}
- phys->connector = conn->state->connector;
-		if (phys->ops.mode_set)
-			phys->ops.mode_set(phys, mode, adj_mode);
+		phys->connector = conn_state->connector;
+		phys->cached_mode = crtc_state->adjusted_mode;
+		if (phys->ops.atomic_mode_set)
+			phys->ops.atomic_mode_set(phys, crtc_state, conn_state);
  	}
  }
@@ -2057,7 +2038,7 @@ static void dpu_encoder_frame_done_timeout(struct timer_list *t)
  }
static const struct drm_encoder_helper_funcs dpu_encoder_helper_funcs = {
-	.mode_set = dpu_encoder_virt_mode_set,
+	.atomic_mode_set = dpu_encoder_virt_atomic_mode_set,
  	.disable = dpu_encoder_virt_disable,
  	.enable = dpu_encoder_virt_enable,
  	.atomic_check = dpu_encoder_virt_atomic_check,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
index 159deb8ed7fb..6e80321b13c5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys.h
@@ -84,7 +84,7 @@ struct dpu_encoder_virt_ops {
   * @is_master:			Whether this phys_enc is the current master
   *				encoder. Can be switched at enable time. Based
   *				on split_role and current mode (CMD/VID).
- * @mode_set:			DRM Call. Set a DRM mode.
+ * @atomic_mode_set:		DRM Call. Set a DRM mode.
   *				This likely caches the mode, for use at enable.
   * @enable:			DRM Call. Enable a DRM mode.
   * @disable:			DRM Call. Disable mode.
@@ -115,9 +115,9 @@ struct dpu_encoder_phys_ops {
  			struct dentry *debugfs_root);
  	void (*prepare_commit)(struct dpu_encoder_phys *encoder);
  	bool (*is_master)(struct dpu_encoder_phys *encoder);
-	void (*mode_set)(struct dpu_encoder_phys *encoder,
-			struct drm_display_mode *mode,
-			struct drm_display_mode *adjusted_mode);
+	void (*atomic_mode_set)(struct dpu_encoder_phys *encoder,
+			struct drm_crtc_state *crtc_state,
+			struct drm_connector_state *conn_state);
  	void (*enable)(struct dpu_encoder_phys *encoder);
  	void (*disable)(struct dpu_encoder_phys *encoder);
  	void (*destroy)(struct dpu_encoder_phys *encoder);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
index 45fe97fb612d..6de298d521ce 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c
@@ -135,23 +135,13 @@ static void dpu_encoder_phys_cmd_underrun_irq(void *arg, int irq_idx)
  			phys_enc);
  }
-static void dpu_encoder_phys_cmd_mode_set(
+static void dpu_encoder_phys_cmd_atomic_mode_set(
  		struct dpu_encoder_phys *phys_enc,
-		struct drm_display_mode *mode,
-		struct drm_display_mode *adj_mode)
+		struct drm_crtc_state *crtc_state,
+		struct drm_connector_state *conn_state)
  {
-	struct dpu_encoder_phys_cmd *cmd_enc =
-		to_dpu_encoder_phys_cmd(phys_enc);
  	struct dpu_encoder_irq *irq;
- if (!mode || !adj_mode) {
-		DPU_ERROR("invalid args\n");
-		return;
-	}
-	phys_enc->cached_mode = *adj_mode;
-	DPU_DEBUG_CMDENC(cmd_enc, "caching mode:\n");
-	drm_mode_debug_printmodeline(adj_mode);
-
  	irq = &phys_enc->irq[INTR_IDX_CTL_START];
  	irq->irq_idx = phys_enc->hw_ctl->caps->intr_start;
@@ -722,7 +712,7 @@ static void dpu_encoder_phys_cmd_init_ops(
  {
  	ops->prepare_commit = dpu_encoder_phys_cmd_prepare_commit;
  	ops->is_master = dpu_encoder_phys_cmd_is_master;
-	ops->mode_set = dpu_encoder_phys_cmd_mode_set;
+	ops->atomic_mode_set = dpu_encoder_phys_cmd_atomic_mode_set;
  	ops->enable = dpu_encoder_phys_cmd_enable;
  	ops->disable = dpu_encoder_phys_cmd_disable;
  	ops->destroy = dpu_encoder_phys_cmd_destroy;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
index 1831fe37c88c..0c07db5021eb 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
@@ -348,19 +348,13 @@ static bool dpu_encoder_phys_vid_needs_single_flush(
  	return phys_enc->split_role != ENC_ROLE_SOLO;
  }
-static void dpu_encoder_phys_vid_mode_set(
+static void dpu_encoder_phys_vid_atomic_mode_set(
  		struct dpu_encoder_phys *phys_enc,
-		struct drm_display_mode *mode,
-		struct drm_display_mode *adj_mode)
+		struct drm_crtc_state *crtc_state,
+		struct drm_connector_state *conn_state)
  {
  	struct dpu_encoder_irq *irq;
- if (adj_mode) {
-		phys_enc->cached_mode = *adj_mode;
-		drm_mode_debug_printmodeline(adj_mode);
-		DPU_DEBUG_VIDENC(phys_enc, "caching mode:\n");
-	}
-
  	irq = &phys_enc->irq[INTR_IDX_VSYNC];
  	irq->irq_idx = phys_enc->hw_intf->cap->intr_vsync;
@@ -662,7 +656,7 @@ static int dpu_encoder_phys_vid_get_frame_count(
  static void dpu_encoder_phys_vid_init_ops(struct dpu_encoder_phys_ops *ops)
  {
  	ops->is_master = dpu_encoder_phys_vid_is_master;
-	ops->mode_set = dpu_encoder_phys_vid_mode_set;
+	ops->atomic_mode_set = dpu_encoder_phys_vid_atomic_mode_set;
  	ops->enable = dpu_encoder_phys_vid_enable;
  	ops->disable = dpu_encoder_phys_vid_disable;
  	ops->destroy = dpu_encoder_phys_vid_destroy;



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