drm/msm/dpu: merge dpu_encoder_init() and dpu_encoder_setup()

There is no reason to split the dpu_encoder interface into separate
_init() and _setup() phases. Merge them into a single function.

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Abhinav Kumar <quic_abhinavk@quicinc.com> # sc7280
Patchwork: https://patchwork.freedesktop.org/patch/540628/
Link: https://lore.kernel.org/r/20230601172236.564445-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

3 files changed, 56 insertions, 100 deletions

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 2c9af33c0911..4f44a49f8816 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2433,7 +2433,8 @@ static const struct drm_encoder_funcs dpu_encoder_funcs = {
 		.early_unregister = dpu_encoder_early_unregister,
 };
 
-int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
+struct drm_encoder *dpu_encoder_init(struct drm_device *dev,
+		int drm_enc_mode,
 		struct msm_display_info *disp_info)
 {
 	struct msm_drm_private *priv = dev->dev_private;
@@ -2442,7 +2443,23 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
 	struct dpu_encoder_virt *dpu_enc = NULL;
 	int ret = 0;
 
-	dpu_enc = to_dpu_encoder_virt(enc);
+	dpu_enc = devm_kzalloc(dev->dev, sizeof(*dpu_enc), GFP_KERNEL);
+	if (!dpu_enc)
+		return ERR_PTR(-ENOMEM);
+
+	ret = drm_encoder_init(dev, &dpu_enc->base, &dpu_encoder_funcs,
+			       drm_enc_mode, NULL);
+	if (ret) {
+		devm_kfree(dev->dev, dpu_enc);
+		return ERR_PTR(ret);
+	}
+
+	drm_encoder_helper_add(&dpu_enc->base, &dpu_encoder_helper_funcs);
+
+	spin_lock_init(&dpu_enc->enc_spinlock);
+	dpu_enc->enabled = false;
+	mutex_init(&dpu_enc->enc_lock);
+	mutex_init(&dpu_enc->rc_lock);
 
 	ret = dpu_encoder_setup_display(dpu_enc, dpu_kms, disp_info);
 	if (ret)
@@ -2471,44 +2488,14 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
 
 	DPU_DEBUG_ENC(dpu_enc, "created\n");
 
-	return ret;
+	return &dpu_enc->base;
 
 fail:
 	DPU_ERROR("failed to create encoder\n");
 	if (drm_enc)
 		dpu_encoder_destroy(drm_enc);
 
-	return ret;
-
-
-}
-
-struct drm_encoder *dpu_encoder_init(struct drm_device *dev,
-		int drm_enc_mode)
-{
-	struct dpu_encoder_virt *dpu_enc = NULL;
-	int rc = 0;
-
-	dpu_enc = devm_kzalloc(dev->dev, sizeof(*dpu_enc), GFP_KERNEL);
-	if (!dpu_enc)
-		return ERR_PTR(-ENOMEM);
-
-
-	rc = drm_encoder_init(dev, &dpu_enc->base, &dpu_encoder_funcs,
-							  drm_enc_mode, NULL);
-	if (rc) {
-		devm_kfree(dev->dev, dpu_enc);
-		return ERR_PTR(rc);
-	}
-
-	drm_encoder_helper_add(&dpu_enc->base, &dpu_encoder_helper_funcs);
-
-	spin_lock_init(&dpu_enc->enc_spinlock);
-	dpu_enc->enabled = false;
-	mutex_init(&dpu_enc->enc_lock);
-	mutex_init(&dpu_enc->rc_lock);
-
-	return &dpu_enc->base;
+	return ERR_PTR(ret);
 }
 
 int dpu_encoder_wait_for_event(struct drm_encoder *drm_enc,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index 6d14f84dd43f..90e1925d7770 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -130,20 +130,12 @@ void dpu_encoder_virt_runtime_resume(struct drm_encoder *encoder);
 /**
  * dpu_encoder_init - initialize virtual encoder object
  * @dev:        Pointer to drm device structure
+ * @drm_enc_mode: corresponding DRM_MODE_ENCODER_* constant
  * @disp_info:  Pointer to display information structure
  * Returns:     Pointer to newly created drm encoder
  */
-struct drm_encoder *dpu_encoder_init(
-		struct drm_device *dev,
-		int drm_enc_mode);
-
-/**
- * dpu_encoder_setup - setup dpu_encoder for the display probed
- * @dev:		Pointer to drm device structure
- * @enc:		Pointer to the drm_encoder
- * @disp_info:	Pointer to the display info
- */
-int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
+struct drm_encoder *dpu_encoder_init(struct drm_device *dev,
+		int drm_enc_mode,
 		struct msm_display_info *disp_info);
 
 /**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 7f87ac6d68ac..801300e6626f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -535,15 +535,23 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
 		    !msm_dsi_is_master_dsi(priv->dsi[i]))
 			continue;
 
-		encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_DSI);
+		memset(&info, 0, sizeof(info));
+		info.intf_type = INTF_DSI;
+
+		info.h_tile_instance[info.num_of_h_tiles++] = i;
+		if (msm_dsi_is_bonded_dsi(priv->dsi[i]))
+			info.h_tile_instance[info.num_of_h_tiles++] = other;
+
+		info.is_cmd_mode = msm_dsi_is_cmd_mode(priv->dsi[i]);
+
+		info.dsc = msm_dsi_get_dsc_config(priv->dsi[i]);
+
+		encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_DSI, &info);
 		if (IS_ERR(encoder)) {
 			DPU_ERROR("encoder init failed for dsi display\n");
 			return PTR_ERR(encoder);
 		}
 
-		memset(&info, 0, sizeof(info));
-		info.intf_type = INTF_DSI;
-
 		rc = msm_dsi_modeset_init(priv->dsi[i], dev, encoder);
 		if (rc) {
 			DPU_ERROR("modeset_init failed for dsi[%d], rc = %d\n",
@@ -551,11 +559,6 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
 			break;
 		}
 
-		info.h_tile_instance[info.num_of_h_tiles++] = i;
-		info.is_cmd_mode = msm_dsi_is_cmd_mode(priv->dsi[i]);
-
-		info.dsc = msm_dsi_get_dsc_config(priv->dsi[i]);
-
 		if (msm_dsi_is_bonded_dsi(priv->dsi[i]) && priv->dsi[other]) {
 			rc = msm_dsi_modeset_init(priv->dsi[other], dev, encoder);
 			if (rc) {
@@ -563,14 +566,7 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
 					other, rc);
 				break;
 			}
-
-			info.h_tile_instance[info.num_of_h_tiles++] = other;
 		}
-
-		rc = dpu_encoder_setup(dev, encoder, &info);
-		if (rc)
-			DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
-				  encoder->base.id, rc);
 	}
 
 	return rc;
@@ -589,29 +585,23 @@ static int _dpu_kms_initialize_displayport(struct drm_device *dev,
 		if (!priv->dp[i])
 			continue;
 
-		encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS);
+		memset(&info, 0, sizeof(info));
+		info.num_of_h_tiles = 1;
+		info.h_tile_instance[0] = i;
+		info.intf_type = INTF_DP;
+
+		encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS, &info);
 		if (IS_ERR(encoder)) {
 			DPU_ERROR("encoder init failed for dsi display\n");
 			return PTR_ERR(encoder);
 		}
 
-		memset(&info, 0, sizeof(info));
 		rc = msm_dp_modeset_init(priv->dp[i], dev, encoder);
 		if (rc) {
 			DPU_ERROR("modeset_init failed for DP, rc = %d\n", rc);
 			drm_encoder_cleanup(encoder);
 			return rc;
 		}
-
-		info.num_of_h_tiles = 1;
-		info.h_tile_instance[0] = i;
-		info.intf_type = INTF_DP;
-		rc = dpu_encoder_setup(dev, encoder, &info);
-		if (rc) {
-			DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
-				  encoder->base.id, rc);
-			return rc;
-		}
 	}
 
 	return 0;
@@ -628,13 +618,17 @@ static int _dpu_kms_initialize_hdmi(struct drm_device *dev,
 	if (!priv->hdmi)
 		return 0;
 
-	encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS);
+	memset(&info, 0, sizeof(info));
+	info.num_of_h_tiles = 1;
+	info.h_tile_instance[0] = 0;
+	info.intf_type = INTF_HDMI;
+
+	encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS, &info);
 	if (IS_ERR(encoder)) {
 		DPU_ERROR("encoder init failed for HDMI display\n");
 		return PTR_ERR(encoder);
 	}
 
-	memset(&info, 0, sizeof(info));
 	rc = msm_hdmi_modeset_init(priv->hdmi, dev, encoder);
 	if (rc) {
 		DPU_ERROR("modeset_init failed for DP, rc = %d\n", rc);
@@ -642,16 +636,6 @@ static int _dpu_kms_initialize_hdmi(struct drm_device *dev,
 		return rc;
 	}
 
-	info.num_of_h_tiles = 1;
-	info.h_tile_instance[0] = 0;
-	info.intf_type = INTF_HDMI;
-	rc = dpu_encoder_setup(dev, encoder, &info);
-	if (rc) {
-		DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
-			  encoder->base.id, rc);
-		return rc;
-	}
-
 	return 0;
 }
 
@@ -663,14 +647,19 @@ static int _dpu_kms_initialize_writeback(struct drm_device *dev,
 	struct msm_display_info info;
 	int rc;
 
-	encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_VIRTUAL);
+	memset(&info, 0, sizeof(info));
+
+	info.num_of_h_tiles = 1;
+	/* use only WB idx 2 instance for DPU */
+	info.h_tile_instance[0] = WB_2;
+	info.intf_type = INTF_WB;
+
+	encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_VIRTUAL, &info);
 	if (IS_ERR(encoder)) {
 		DPU_ERROR("encoder init failed for dsi display\n");
 		return PTR_ERR(encoder);
 	}
 
-	memset(&info, 0, sizeof(info));
-
 	rc = dpu_writeback_init(dev, encoder, wb_formats,
 			n_formats);
 	if (rc) {
@@ -679,18 +668,6 @@ static int _dpu_kms_initialize_writeback(struct drm_device *dev,
 		return rc;
 	}
 
-	info.num_of_h_tiles = 1;
-	/* use only WB idx 2 instance for DPU */
-	info.h_tile_instance[0] = WB_2;
-	info.intf_type = INTF_WB;
-
-	rc = dpu_encoder_setup(dev, encoder, &info);
-	if (rc) {
-		DPU_ERROR("failed to setup DPU encoder %d: rc:%d\n",
-				  encoder->base.id, rc);
-		return rc;
-	}
-
 	return 0;
 }