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From: Nancy.Lin <[email protected]>
To: Rob Herring <[email protected]>,
	Matthias Brugger <[email protected]>,
	Chun-Kuang Hu <[email protected]>,
	"Philipp Zabel" <[email protected]>,
	<[email protected]>,
	"AngeloGioacchino Del Regno"
	<[email protected]>, <[email protected]>
Cc: [email protected],
	[email protected],
	Yongqiang Niu <[email protected]>,
	David Airlie <[email protected]>,
	"jason-jh . lin" <[email protected]>,
	[email protected], [email protected],
	Nick Desaulniers <[email protected]>,
	[email protected], [email protected],
	Nathan Chancellor <[email protected]>,
	"Nancy . Lin" <[email protected]>,
	[email protected],
	[email protected]
Subject: [PATCH v20 22/25] drm/mediatek: modify mediatek-drm for mt8195 multi mmsys support
Date: Wed, 4 May 2022 17:14:37 +0800	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

MT8195 have two mmsys. Modify drm for MT8195 multi-mmsys support.
The two mmsys (vdosys0 and vdosys1) will bring up two drm drivers,
only one drm driver register as the drm device.
Each drm driver binds its own component. The last bind drm driver
allocates and registers the drm device to drm core.
Each crtc path is created with the corresponding drm driver data.

Signed-off-by: Nancy.Lin <[email protected]>
Reviewed-by: AngeloGioacchino Del Regno <[email protected]>
Reviewed-by: CK Hu <[email protected]>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c |  24 +-
 drivers/gpu/drm/mediatek/mtk_drm_crtc.h |   3 +-
 drivers/gpu/drm/mediatek/mtk_drm_drv.c  | 287 ++++++++++++++++++------
 drivers/gpu/drm/mediatek/mtk_drm_drv.h  |  10 +-
 4 files changed, 239 insertions(+), 85 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 5c2c21958325..a6ec9a02adf5 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -874,21 +874,28 @@ struct device *mtk_drm_crtc_dma_dev_get(struct drm_crtc *crtc)
 }
 
 int mtk_drm_crtc_create(struct drm_device *drm_dev,
-			const enum mtk_ddp_comp_id *path, unsigned int path_len)
+			const enum mtk_ddp_comp_id *path, unsigned int path_len,
+			int priv_data_index)
 {
 	struct mtk_drm_private *priv = drm_dev->dev_private;
 	struct device *dev = drm_dev->dev;
 	struct mtk_drm_crtc *mtk_crtc;
 	unsigned int num_comp_planes = 0;
-	int pipe = priv->num_pipes;
 	int ret;
 	int i;
 	bool has_ctm = false;
 	uint gamma_lut_size = 0;
+	struct drm_crtc *tmp;
+	int crtc_i = 0;
 
 	if (!path)
 		return 0;
 
+	priv = priv->all_drm_private[priv_data_index];
+
+	drm_for_each_crtc(tmp, drm_dev)
+		crtc_i++;
+
 	for (i = 0; i < path_len; i++) {
 		enum mtk_ddp_comp_id comp_id = path[i];
 		struct device_node *node;
@@ -900,7 +907,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
 		if (!node) {
 			dev_info(dev,
 				 "Not creating crtc %d because component %d is disabled or missing\n",
-				 pipe, comp_id);
+				 crtc_i, comp_id);
 			return 0;
 		}
 
@@ -956,7 +963,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
 
 	for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) {
 		ret = mtk_drm_crtc_init_comp_planes(drm_dev, mtk_crtc, i,
-						    pipe);
+						    crtc_i);
 		if (ret)
 			return ret;
 	}
@@ -968,24 +975,23 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
 	 */
 	mtk_crtc->dma_dev = mtk_ddp_comp_dma_dev_get(&priv->ddp_comp[path[0]]);
 
-	ret = mtk_drm_crtc_init(drm_dev, mtk_crtc, pipe);
+	ret = mtk_drm_crtc_init(drm_dev, mtk_crtc, crtc_i);
 	if (ret < 0)
 		return ret;
 
 	if (gamma_lut_size)
 		drm_mode_crtc_set_gamma_size(&mtk_crtc->base, gamma_lut_size);
 	drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, has_ctm, gamma_lut_size);
-	priv->num_pipes++;
 	mutex_init(&mtk_crtc->hw_lock);
 
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
+	i = priv->mbox_index++;
 	mtk_crtc->cmdq_client.client.dev = mtk_crtc->mmsys_dev;
 	mtk_crtc->cmdq_client.client.tx_block = false;
 	mtk_crtc->cmdq_client.client.knows_txdone = true;
 	mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
 	mtk_crtc->cmdq_client.chan =
-			mbox_request_channel(&mtk_crtc->cmdq_client.client,
-					     drm_crtc_index(&mtk_crtc->base));
+			mbox_request_channel(&mtk_crtc->cmdq_client.client, i);
 	if (IS_ERR(mtk_crtc->cmdq_client.chan)) {
 		dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
 			drm_crtc_index(&mtk_crtc->base));
@@ -995,7 +1001,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
 	if (mtk_crtc->cmdq_client.chan) {
 		ret = of_property_read_u32_index(priv->mutex_node,
 						 "mediatek,gce-events",
-						 drm_crtc_index(&mtk_crtc->base),
+						 i,
 						 &mtk_crtc->cmdq_event);
 		if (ret) {
 			dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
index f5a6e80c5265..606f72f35924 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h
@@ -17,7 +17,8 @@
 void mtk_drm_crtc_commit(struct drm_crtc *crtc);
 int mtk_drm_crtc_create(struct drm_device *drm_dev,
 			const enum mtk_ddp_comp_id *path,
-			unsigned int path_len);
+			unsigned int path_len,
+			int priv_data_index);
 int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane,
 			     struct mtk_plane_state *state);
 void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 2554c7315b2a..bb13686e4bad 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -198,6 +198,7 @@ static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
 	.ext_path = mt2701_mtk_ddp_ext,
 	.ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
 	.shadow_register = true,
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_match_data mt2701_mmsys_match_data = {
@@ -213,6 +214,7 @@ static const struct mtk_mmsys_driver_data mt7623_mmsys_driver_data = {
 	.ext_path = mt7623_mtk_ddp_ext,
 	.ext_len = ARRAY_SIZE(mt7623_mtk_ddp_ext),
 	.shadow_register = true,
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_match_data mt7623_mmsys_match_data = {
@@ -229,6 +231,7 @@ static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
 	.ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext),
 	.third_path = mt2712_mtk_ddp_third,
 	.third_len = ARRAY_SIZE(mt2712_mtk_ddp_third),
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_match_data mt2712_mmsys_match_data = {
@@ -241,6 +244,7 @@ static const struct mtk_mmsys_match_data mt2712_mmsys_match_data = {
 static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = {
 	.main_path = mt8167_mtk_ddp_main,
 	.main_len = ARRAY_SIZE(mt8167_mtk_ddp_main),
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_match_data mt8167_mmsys_match_data = {
@@ -255,6 +259,7 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
 	.main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
 	.ext_path = mt8173_mtk_ddp_ext,
 	.ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_match_data mt8173_mmsys_match_data = {
@@ -269,6 +274,7 @@ static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
 	.main_len = ARRAY_SIZE(mt8183_mtk_ddp_main),
 	.ext_path = mt8183_mtk_ddp_ext,
 	.ext_len = ARRAY_SIZE(mt8183_mtk_ddp_ext),
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_match_data mt8183_mmsys_match_data = {
@@ -283,6 +289,7 @@ static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {
 	.main_len = ARRAY_SIZE(mt8192_mtk_ddp_main),
 	.ext_path = mt8192_mtk_ddp_ext,
 	.ext_len = ARRAY_SIZE(mt8192_mtk_ddp_ext),
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_match_data mt8192_mmsys_match_data = {
@@ -296,6 +303,7 @@ static const struct mtk_mmsys_driver_data mt8195_vdosys0_driver_data = {
 	.io_start = 0x1c01a000,
 	.main_path = mt8195_mtk_ddp_main,
 	.main_len = ARRAY_SIZE(mt8195_mtk_ddp_main),
+	.mmsys_dev_num = 1,
 };
 
 static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = {
@@ -310,29 +318,111 @@ static const struct mtk_mmsys_match_data mt8195_mmsys_match_data = {
 	},
 };
 
+static const struct of_device_id mtk_drm_of_ids[] = {
+	{ .compatible = "mediatek,mt2701-mmsys",
+	  .data = &mt2701_mmsys_match_data},
+	{ .compatible = "mediatek,mt7623-mmsys",
+	  .data = &mt7623_mmsys_match_data},
+	{ .compatible = "mediatek,mt2712-mmsys",
+	  .data = &mt2712_mmsys_match_data},
+	{ .compatible = "mediatek,mt8167-mmsys",
+	  .data = &mt8167_mmsys_match_data},
+	{ .compatible = "mediatek,mt8173-mmsys",
+	  .data = &mt8173_mmsys_match_data},
+	{ .compatible = "mediatek,mt8183-mmsys",
+	  .data = &mt8183_mmsys_match_data},
+	{ .compatible = "mediatek,mt8192-mmsys",
+	  .data = &mt8192_mmsys_match_data},
+	{ .compatible = "mediatek,mt8195-mmsys",
+	  .data = &mt8195_mmsys_match_data},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, mtk_drm_of_ids);
+
+static int mtk_drm_match(struct device *dev, void *data)
+{
+	if (!strncmp(dev_name(dev), "mediatek-drm", sizeof("mediatek-drm") - 1))
+		return true;
+	return false;
+}
+
+static bool mtk_drm_get_all_drm_priv(struct device *dev)
+{
+	struct mtk_drm_private *drm_priv = dev_get_drvdata(dev);
+	struct mtk_drm_private *all_drm_priv[MAX_CRTC];
+	struct device_node *phandle = dev->parent->of_node;
+	const struct of_device_id *of_id;
+	struct device_node *node;
+	struct device *drm_dev;
+	int cnt = 0;
+	int i, j;
+
+	for_each_child_of_node(phandle->parent, node) {
+		struct platform_device *pdev;
+
+		of_id = of_match_node(mtk_drm_of_ids, node);
+		if (!of_id)
+			continue;
+
+		pdev = of_find_device_by_node(node);
+		if (!pdev)
+			continue;
+
+		drm_dev = device_find_child(&pdev->dev, NULL, mtk_drm_match);
+		if (!drm_dev || !dev_get_drvdata(drm_dev))
+			continue;
+
+		all_drm_priv[cnt] = dev_get_drvdata(drm_dev);
+		if (all_drm_priv[cnt] && all_drm_priv[cnt]->mtk_drm_bound)
+			cnt++;
+	}
+
+	if (drm_priv->data->mmsys_dev_num == cnt) {
+		for (i = 0; i < cnt; i++)
+			for (j = 0; j < cnt; j++)
+				all_drm_priv[j]->all_drm_private[i] = all_drm_priv[i];
+
+		return true;
+	}
+
+	return false;
+}
+
+static bool mtk_drm_find_mmsys_comp(struct mtk_drm_private *private, int comp_id)
+{
+	const struct mtk_mmsys_driver_data *drv_data = private->data;
+	int i;
+
+	if (drv_data->main_path)
+		for (i = 0; i < drv_data->main_len; i++)
+			if (drv_data->main_path[i] == comp_id)
+				return true;
+
+	if (drv_data->ext_path)
+		for (i = 0; i < drv_data->ext_len; i++)
+			if (drv_data->ext_path[i] == comp_id)
+				return true;
+
+	if (drv_data->third_path)
+		for (i = 0; i < drv_data->third_len; i++)
+			if (drv_data->third_path[i] == comp_id)
+				return true;
+
+	return false;
+}
+
 static int mtk_drm_kms_init(struct drm_device *drm)
 {
 	struct mtk_drm_private *private = drm->dev_private;
+	struct mtk_drm_private *priv_n;
 	struct platform_device *pdev;
-	struct device_node *np;
+	struct device_node *np = NULL;
 	struct device *dma_dev;
-	int ret;
+	int ret, i, j;
 
 	if (drm_firmware_drivers_only())
 		return -ENODEV;
 
-	if (!iommu_present(&platform_bus_type))
-		return -EPROBE_DEFER;
-
-	pdev = of_find_device_by_node(private->mutex_node);
-	if (!pdev) {
-		dev_err(drm->dev, "Waiting for disp-mutex device %pOF\n",
-			private->mutex_node);
-		of_node_put(private->mutex_node);
-		return -EPROBE_DEFER;
-	}
-	private->mutex_dev = &pdev->dev;
-
 	ret = drmm_mode_config_init(drm);
 	if (ret)
 		goto put_mutex_dev;
@@ -350,33 +440,61 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 	drm->mode_config.funcs = &mtk_drm_mode_config_funcs;
 	drm->mode_config.helper_private = &mtk_drm_mode_config_helpers;
 
-	ret = component_bind_all(drm->dev, drm);
-	if (ret)
-		goto put_mutex_dev;
+	for (i = 0; i < private->data->mmsys_dev_num; i++) {
+		drm->dev_private = private->all_drm_private[i];
+		ret = component_bind_all(private->all_drm_private[i]->dev, drm);
+		if (ret)
+			goto put_mutex_dev;
+	}
 
 	/*
-	 * We currently support two fixed data streams, each optional,
-	 * and each statically assigned to a crtc:
-	 * OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ...
+	 * 1. We currently support two fixed data streams, each optional,
+	 *    and each statically assigned to a crtc:
+	 *    OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ...
+	 * 2. For multi mmsys architecture, crtc path data are located in
+	 *    different drm private data structures. Loop through crtc index to
+	 *    create crtc from the main path and then ext_path and finally the
+	 *    third path.
+	 * 3. Use OVL device for all DMA memory allocations
 	 */
-	ret = mtk_drm_crtc_create(drm, private->data->main_path,
-				  private->data->main_len);
-	if (ret < 0)
-		goto err_component_unbind;
-	/* ... and OVL1 -> COLOR1 -> GAMMA -> RDMA1 -> DPI0. */
-	ret = mtk_drm_crtc_create(drm, private->data->ext_path,
-				  private->data->ext_len);
-	if (ret < 0)
-		goto err_component_unbind;
-
-	ret = mtk_drm_crtc_create(drm, private->data->third_path,
-				  private->data->third_len);
-	if (ret < 0)
-		goto err_component_unbind;
+	for (i = 0; i < MAX_CRTC; i++) {
+		for (j = 0; j < private->data->mmsys_dev_num; j++) {
+			priv_n = private->all_drm_private[j];
+
+			if (i == 0 && priv_n->data->main_len) {
+				ret = mtk_drm_crtc_create(drm, priv_n->data->main_path,
+							  priv_n->data->main_len, j);
+				if (ret)
+					goto err_component_unbind;
+
+				if (!np)
+					np = priv_n->comp_node[priv_n->data->main_path[0]];
+
+				continue;
+			} else if (i == 1 && priv_n->data->ext_len) {
+				ret = mtk_drm_crtc_create(drm, priv_n->data->ext_path,
+							  priv_n->data->ext_len, j);
+				if (ret)
+					goto err_component_unbind;
+
+				if (!np)
+					np = priv_n->comp_node[priv_n->data->ext_path[0]];
+
+				continue;
+			} else if (i == 2 && priv_n->data->third_len) {
+				ret = mtk_drm_crtc_create(drm, priv_n->data->third_path,
+							  priv_n->data->third_len, j);
+				if (ret)
+					goto err_component_unbind;
+
+				if (!np)
+					np = priv_n->comp_node[priv_n->data->third_path[0]];
+
+				continue;
+			}
+		}
+	}
 
-	/* Use OVL device for all DMA memory allocations */
-	np = private->comp_node[private->data->main_path[0]] ?:
-	     private->comp_node[private->data->ext_path[0]];
 	pdev = of_find_device_by_node(np);
 	if (!pdev) {
 		ret = -ENODEV;
@@ -385,7 +503,8 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 	}
 
 	dma_dev = &pdev->dev;
-	private->dma_dev = dma_dev;
+	for (i = 0; i < private->data->mmsys_dev_num; i++)
+		private->all_drm_private[i]->dma_dev = dma_dev;
 
 	/*
 	 * Configure the DMA segment size to make sure we get contiguous IOVA
@@ -407,9 +526,12 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 	return 0;
 
 err_component_unbind:
-	component_unbind_all(drm->dev, drm);
+	for (i = 0; i < private->data->mmsys_dev_num; i++)
+		component_unbind_all(private->all_drm_private[i]->dev, drm);
 put_mutex_dev:
-	put_device(private->mutex_dev);
+	for (i = 0; i < private->data->mmsys_dev_num; i++)
+		put_device(private->all_drm_private[i]->mutex_dev);
+
 	return ret;
 }
 
@@ -457,15 +579,36 @@ static const struct drm_driver mtk_drm_driver = {
 static int mtk_drm_bind(struct device *dev)
 {
 	struct mtk_drm_private *private = dev_get_drvdata(dev);
+	struct platform_device *pdev;
 	struct drm_device *drm;
-	int ret;
+	int ret, i;
+
+	if (!iommu_present(&platform_bus_type))
+		return -EPROBE_DEFER;
+
+	pdev = of_find_device_by_node(private->mutex_node);
+	if (!pdev) {
+		dev_err(dev, "Waiting for disp-mutex device %pOF\n",
+			private->mutex_node);
+		of_node_put(private->mutex_node);
+		return -EPROBE_DEFER;
+	}
+
+	private->mutex_dev = &pdev->dev;
+	private->mtk_drm_bound = true;
+	private->dev = dev;
+
+	if (!mtk_drm_get_all_drm_priv(dev))
+		return 0;
 
 	drm = drm_dev_alloc(&mtk_drm_driver, dev);
 	if (IS_ERR(drm))
 		return PTR_ERR(drm);
 
+	private->drm_master = true;
 	drm->dev_private = private;
-	private->drm = drm;
+	for (i = 0; i < private->data->mmsys_dev_num; i++)
+		private->all_drm_private[i]->drm = drm;
 
 	ret = mtk_drm_kms_init(drm);
 	if (ret < 0)
@@ -490,10 +633,14 @@ static void mtk_drm_unbind(struct device *dev)
 {
 	struct mtk_drm_private *private = dev_get_drvdata(dev);
 
-	drm_dev_unregister(private->drm);
-	mtk_drm_kms_deinit(private->drm);
-	drm_dev_put(private->drm);
-	private->num_pipes = 0;
+	/* for multi mmsys dev, unregister drm dev in mmsys master */
+	if (private->drm_master) {
+		drm_dev_unregister(private->drm);
+		mtk_drm_kms_deinit(private->drm);
+		drm_dev_put(private->drm);
+	}
+	private->mtk_drm_bound = false;
+	private->drm_master = false;
 	private->drm = NULL;
 }
 
@@ -608,27 +755,6 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 	{ }
 };
 
-static const struct of_device_id mtk_drm_of_ids[] = {
-	{ .compatible = "mediatek,mt2701-mmsys",
-	  .data = &mt2701_mmsys_match_data},
-	{ .compatible = "mediatek,mt7623-mmsys",
-	  .data = &mt7623_mmsys_match_data},
-	{ .compatible = "mediatek,mt2712-mmsys",
-	  .data = &mt2712_mmsys_match_data},
-	{ .compatible = "mediatek,mt8167-mmsys",
-	  .data = &mt8167_mmsys_match_data},
-	{ .compatible = "mediatek,mt8173-mmsys",
-	  .data = &mt8173_mmsys_match_data},
-	{ .compatible = "mediatek,mt8183-mmsys",
-	  .data = &mt8183_mmsys_match_data},
-	{ .compatible = "mediatek,mt8192-mmsys",
-	  .data = &mt8192_mmsys_match_data},
-	{ .compatible = "mediatek,mt8195-mmsys",
-	  .data = &mt8195_mmsys_match_data},
-	{ }
-};
-MODULE_DEVICE_TABLE(of, mtk_drm_of_ids);
-
 static int mtk_drm_find_match_data(struct device *dev,
 				   const struct mtk_mmsys_match_data *match_data)
 {
@@ -689,6 +815,12 @@ static int mtk_drm_probe(struct platform_device *pdev)
 		private->data = match_data->drv_data[0];
 	}
 
+	private->all_drm_private = devm_kmalloc_array(dev, private->data->mmsys_dev_num,
+						      sizeof(*private->all_drm_private),
+						      GFP_KERNEL);
+	if (!private->all_drm_private)
+		return -ENOMEM;
+
 	/* Iterate over sibling DISP function blocks */
 	for_each_child_of_node(phandle->parent, node) {
 		const struct of_device_id *of_id;
@@ -708,7 +840,13 @@ static int mtk_drm_probe(struct platform_device *pdev)
 		comp_type = (enum mtk_ddp_comp_type)of_id->data;
 
 		if (comp_type == MTK_DISP_MUTEX) {
-			private->mutex_node = of_node_get(node);
+			int id;
+
+			id = of_alias_get_id(node, "mutex");
+			if (id < 0 || id == private->data->mmsys_id) {
+				private->mutex_node = of_node_get(node);
+				dev_dbg(dev, "get mutex for mmsys %d", private->data->mmsys_id);
+			}
 			continue;
 		}
 
@@ -719,6 +857,9 @@ static int mtk_drm_probe(struct platform_device *pdev)
 			continue;
 		}
 
+		if (!mtk_drm_find_mmsys_comp(private, comp_id))
+			continue;
+
 		private->comp_node[comp_id] = of_node_get(node);
 
 		/*
@@ -793,9 +934,10 @@ static int mtk_drm_sys_suspend(struct device *dev)
 {
 	struct mtk_drm_private *private = dev_get_drvdata(dev);
 	struct drm_device *drm = private->drm;
-	int ret;
+	int ret = 0;
 
-	ret = drm_mode_config_helper_suspend(drm);
+	if (private->drm_master)
+		ret = drm_mode_config_helper_suspend(drm);
 
 	return ret;
 }
@@ -804,9 +946,10 @@ static int mtk_drm_sys_resume(struct device *dev)
 {
 	struct mtk_drm_private *private = dev_get_drvdata(dev);
 	struct drm_device *drm = private->drm;
-	int ret;
+	int ret = 0;
 
-	ret = drm_mode_config_helper_resume(drm);
+	if (private->drm_master)
+		ret = drm_mode_config_helper_resume(drm);
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index 51bee36579ef..2d843c88cffb 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -30,6 +30,8 @@ struct mtk_mmsys_driver_data {
 	unsigned int third_len;
 
 	bool shadow_register;
+	unsigned int mmsys_id;
+	unsigned int mmsys_dev_num;
 };
 
 struct mtk_mmsys_match_data {
@@ -40,9 +42,9 @@ struct mtk_mmsys_match_data {
 struct mtk_drm_private {
 	struct drm_device *drm;
 	struct device *dma_dev;
-
-	unsigned int num_pipes;
-
+	bool mtk_drm_bound;
+	bool drm_master;
+	struct device *dev;
 	struct device_node *mutex_node;
 	struct device *mutex_dev;
 	struct device *mmsys_dev;
@@ -50,6 +52,8 @@ struct mtk_drm_private {
 	struct mtk_ddp_comp ddp_comp[DDP_COMPONENT_ID_MAX];
 	const struct mtk_mmsys_driver_data *data;
 	struct drm_atomic_state *suspend_state;
+	unsigned int mbox_index;
+	struct mtk_drm_private **all_drm_private;
 };
 
 extern struct platform_driver mtk_disp_aal_driver;
-- 
2.18.0



  parent reply	other threads:[~2022-05-04  9:15 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-04  9:14 [PATCH v20 00/25] Add MediaTek SoC DRM (vdosys1) support for mt8195 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 01/25] dt-bindings: mediatek: add vdosys1 RDMA definition " Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 02/25] dt-bindings: reset: mt8195: add vdosys1 reset control bit Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 03/25] dt-bindings: mediatek: add ethdr definition for mt8195 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 04/25] soc: mediatek: add mtk-mmsys ethdr and mdp_rdma components Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 05/25] soc: mediatek: add mtk-mmsys support for mt8195 vdosys1 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 06/25] soc: mediatek: add mtk_mmsys_update_bits API Nancy.Lin
2022-05-04  9:16   ` AngeloGioacchino Del Regno
2022-05-04  9:14 ` [PATCH v20 07/25] soc: mediatek: add mtk-mmsys config API for mt8195 vdosys1 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 08/25] soc: mediatek: add cmdq support of " Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 09/25] soc: mediatek: mmsys: add mmsys for support 64 reset bits Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 10/25] soc: mediatek: mmsys: add reset control for MT8195 vdosys1 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 11/25] soc: mediatek: add mtk-mutex component - dp_intf1 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 12/25] soc: mediatek: add mtk-mutex support for mt8195 vdosys1 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 13/25] drm/mediatek: add display MDP RDMA support for MT8195 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 14/25] drm/mediatek: add display merge advance config API " Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 15/25] drm/mediatek: add display merge start/stop API for cmdq support Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 16/25] drm/mediatek: add display merge mute/unmute support for MT8195 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 17/25] drm/mediatek: add display merge async reset control Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 18/25] drm/mediatek: add ETHDR support for MT8195 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 19/25] drm/mediatek: add mediatek-drm plane color encoding info Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 20/25] drm/mediatek: add ovl_adaptor support for MT8195 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 21/25] drm/mediatek: add dma dev get function Nancy.Lin
2022-05-04  9:14 ` Nancy.Lin [this message]
2022-05-04  9:14 ` [PATCH v20 23/25] drm/mediatek: add drm ovl_adaptor sub driver for MT8195 Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 24/25] drm/mediatek: add mediatek-drm of vdosys1 support " Nancy.Lin
2022-05-04  9:14 ` [PATCH v20 25/25] arm64: dts: mt8195: add display node for vdosys1 Nancy.Lin

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