drm/mediatek: Add drm ovl_adaptor sub driver for MT8195

Add drm ovl_adaptor sub driver. Bring up ovl_adaptor sub driver if
the component exists in the path.

Signed-off-by: Nancy.Lin <nancy.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230321121859.2355-7-nancy.lin@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

1 files changed, 43 insertions, 35 deletions

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index bd3dd2706825..f689e6750974 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -58,7 +58,7 @@ static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = {
 	.atomic_commit = drm_atomic_helper_commit,
 };
 
-static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = {
+static const unsigned int mt2701_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_RDMA0,
 	DDP_COMPONENT_COLOR0,
@@ -66,12 +66,12 @@ static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = {
 	DDP_COMPONENT_DSI0,
 };
 
-static const enum mtk_ddp_comp_id mt2701_mtk_ddp_ext[] = {
+static const unsigned int mt2701_mtk_ddp_ext[] = {
 	DDP_COMPONENT_RDMA1,
 	DDP_COMPONENT_DPI0,
 };
 
-static const enum mtk_ddp_comp_id mt7623_mtk_ddp_main[] = {
+static const unsigned int mt7623_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_RDMA0,
 	DDP_COMPONENT_COLOR0,
@@ -79,12 +79,12 @@ static const enum mtk_ddp_comp_id mt7623_mtk_ddp_main[] = {
 	DDP_COMPONENT_DPI0,
 };
 
-static const enum mtk_ddp_comp_id mt7623_mtk_ddp_ext[] = {
+static const unsigned int mt7623_mtk_ddp_ext[] = {
 	DDP_COMPONENT_RDMA1,
 	DDP_COMPONENT_DSI0,
 };
 
-static const enum mtk_ddp_comp_id mt2712_mtk_ddp_main[] = {
+static const unsigned int mt2712_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_COLOR0,
 	DDP_COMPONENT_AAL0,
@@ -94,7 +94,7 @@ static const enum mtk_ddp_comp_id mt2712_mtk_ddp_main[] = {
 	DDP_COMPONENT_PWM0,
 };
 
-static const enum mtk_ddp_comp_id mt2712_mtk_ddp_ext[] = {
+static const unsigned int mt2712_mtk_ddp_ext[] = {
 	DDP_COMPONENT_OVL1,
 	DDP_COMPONENT_COLOR1,
 	DDP_COMPONENT_AAL1,
@@ -104,13 +104,13 @@ static const enum mtk_ddp_comp_id mt2712_mtk_ddp_ext[] = {
 	DDP_COMPONENT_PWM1,
 };
 
-static const enum mtk_ddp_comp_id mt2712_mtk_ddp_third[] = {
+static const unsigned int mt2712_mtk_ddp_third[] = {
 	DDP_COMPONENT_RDMA2,
 	DDP_COMPONENT_DSI3,
 	DDP_COMPONENT_PWM2,
 };
 
-static enum mtk_ddp_comp_id mt8167_mtk_ddp_main[] = {
+static unsigned int mt8167_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_COLOR0,
 	DDP_COMPONENT_CCORR,
@@ -121,7 +121,7 @@ static enum mtk_ddp_comp_id mt8167_mtk_ddp_main[] = {
 	DDP_COMPONENT_DSI0,
 };
 
-static const enum mtk_ddp_comp_id mt8173_mtk_ddp_main[] = {
+static const unsigned int mt8173_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_COLOR0,
 	DDP_COMPONENT_AAL0,
@@ -132,7 +132,7 @@ static const enum mtk_ddp_comp_id mt8173_mtk_ddp_main[] = {
 	DDP_COMPONENT_PWM0,
 };
 
-static const enum mtk_ddp_comp_id mt8173_mtk_ddp_ext[] = {
+static const unsigned int mt8173_mtk_ddp_ext[] = {
 	DDP_COMPONENT_OVL1,
 	DDP_COMPONENT_COLOR1,
 	DDP_COMPONENT_GAMMA,
@@ -140,7 +140,7 @@ static const enum mtk_ddp_comp_id mt8173_mtk_ddp_ext[] = {
 	DDP_COMPONENT_DPI0,
 };
 
-static const enum mtk_ddp_comp_id mt8183_mtk_ddp_main[] = {
+static const unsigned int mt8183_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_OVL_2L0,
 	DDP_COMPONENT_RDMA0,
@@ -152,13 +152,13 @@ static const enum mtk_ddp_comp_id mt8183_mtk_ddp_main[] = {
 	DDP_COMPONENT_DSI0,
 };
 
-static const enum mtk_ddp_comp_id mt8183_mtk_ddp_ext[] = {
+static const unsigned int mt8183_mtk_ddp_ext[] = {
 	DDP_COMPONENT_OVL_2L1,
 	DDP_COMPONENT_RDMA1,
 	DDP_COMPONENT_DPI0,
 };
 
-static const enum mtk_ddp_comp_id mt8186_mtk_ddp_main[] = {
+static const unsigned int mt8186_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_RDMA0,
 	DDP_COMPONENT_COLOR0,
@@ -170,13 +170,13 @@ static const enum mtk_ddp_comp_id mt8186_mtk_ddp_main[] = {
 	DDP_COMPONENT_DSI0,
 };
 
-static const enum mtk_ddp_comp_id mt8186_mtk_ddp_ext[] = {
+static const unsigned int mt8186_mtk_ddp_ext[] = {
 	DDP_COMPONENT_OVL_2L0,
 	DDP_COMPONENT_RDMA1,
 	DDP_COMPONENT_DPI0,
 };
 
-static const enum mtk_ddp_comp_id mt8192_mtk_ddp_main[] = {
+static const unsigned int mt8192_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_OVL_2L0,
 	DDP_COMPONENT_RDMA0,
@@ -189,13 +189,13 @@ static const enum mtk_ddp_comp_id mt8192_mtk_ddp_main[] = {
 	DDP_COMPONENT_DSI0,
 };
 
-static const enum mtk_ddp_comp_id mt8192_mtk_ddp_ext[] = {
+static const unsigned int mt8192_mtk_ddp_ext[] = {
 	DDP_COMPONENT_OVL_2L2,
 	DDP_COMPONENT_RDMA4,
 	DDP_COMPONENT_DPI0,
 };
 
-static const enum mtk_ddp_comp_id mt8195_mtk_ddp_main[] = {
+static const unsigned int mt8195_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_RDMA0,
 	DDP_COMPONENT_COLOR0,
@@ -381,9 +381,7 @@ 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 = NULL;
-	struct device *dma_dev;
+	struct device *dma_dev = NULL;
 	int ret, i, j;
 
 	if (drm_firmware_drivers_only())
@@ -427,7 +425,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 	 *    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
 	 */
 	for (i = 0; i < MAX_CRTC; i++) {
 		for (j = 0; j < private->data->mmsys_dev_num; j++) {
@@ -439,9 +436,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 				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,
@@ -449,9 +443,6 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 				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,
@@ -459,22 +450,19 @@ static int mtk_drm_kms_init(struct drm_device *drm)
 				if (ret)
 					goto err_component_unbind;
 
-				if (!np)
-					np = priv_n->comp_node[priv_n->data->third_path[0]];
-
 				continue;
 			}
 		}
 	}
 
-	pdev = of_find_device_by_node(np);
-	if (!pdev) {
+	/* Use OVL device for all DMA memory allocations */
+	dma_dev = mtk_drm_crtc_dma_dev_get(drm_crtc_from_index(drm, 0));
+	if (!dma_dev) {
 		ret = -ENODEV;
 		dev_err(drm->dev, "Need at least one OVL device\n");
 		goto err_component_unbind;
 	}
 
-	dma_dev = &pdev->dev;
 	for (i = 0; i < private->data->mmsys_dev_num; i++)
 		private->all_drm_private[i]->dma_dev = dma_dev;
 
@@ -548,6 +536,11 @@ static const struct drm_driver mtk_drm_driver = {
 	.minor = DRIVER_MINOR,
 };
 
+static int compare_dev(struct device *dev, void *data)
+{
+	return dev == (struct device *)data;
+}
+
 static int mtk_drm_bind(struct device *dev)
 {
 	struct mtk_drm_private *private = dev_get_drvdata(dev);
@@ -746,6 +739,7 @@ static int mtk_drm_probe(struct platform_device *pdev)
 	struct mtk_drm_private *private;
 	struct device_node *node;
 	struct component_match *match = NULL;
+	struct platform_device *ovl_adaptor;
 	int ret;
 	int i;
 
@@ -771,6 +765,18 @@ static int mtk_drm_probe(struct platform_device *pdev)
 	if (!private->all_drm_private)
 		return -ENOMEM;
 
+	/* Bringup ovl_adaptor */
+	if (mtk_drm_find_mmsys_comp(private, DDP_COMPONENT_DRM_OVL_ADAPTOR)) {
+		ovl_adaptor = platform_device_register_data(dev, "mediatek-disp-ovl-adaptor",
+							    PLATFORM_DEVID_AUTO,
+							    (void *)private->mmsys_dev,
+							    sizeof(*private->mmsys_dev));
+		private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR].dev = &ovl_adaptor->dev;
+		mtk_ddp_comp_init(NULL, &private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR],
+				  DDP_COMPONENT_DRM_OVL_ADAPTOR);
+		component_match_add(dev, &match, compare_dev, &ovl_adaptor->dev);
+	}
+
 	/* Iterate over sibling DISP function blocks */
 	for_each_child_of_node(phandle->parent, node) {
 		const struct of_device_id *of_id;
@@ -824,6 +830,7 @@ static int mtk_drm_probe(struct platform_device *pdev)
 		    comp_type == MTK_DISP_MERGE ||
 		    comp_type == MTK_DISP_OVL ||
 		    comp_type == MTK_DISP_OVL_2L ||
+		    comp_type == MTK_DISP_OVL_ADAPTOR ||
 		    comp_type == MTK_DISP_RDMA ||
 		    comp_type == MTK_DP_INTF ||
 		    comp_type == MTK_DPI ||
@@ -861,7 +868,7 @@ err_pm:
 	pm_runtime_disable(dev);
 err_node:
 	of_node_put(private->mutex_node);
-	for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
+	for (i = 0; i < DDP_COMPONENT_DRM_ID_MAX; i++)
 		of_node_put(private->comp_node[i]);
 	return ret;
 }
@@ -874,7 +881,7 @@ static int mtk_drm_remove(struct platform_device *pdev)
 	component_master_del(&pdev->dev, &mtk_drm_ops);
 	pm_runtime_disable(&pdev->dev);
 	of_node_put(private->mutex_node);
-	for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
+	for (i = 0; i < DDP_COMPONENT_DRM_ID_MAX; i++)
 		of_node_put(private->comp_node[i]);
 
 	return 0;
@@ -923,6 +930,7 @@ static struct platform_driver * const mtk_drm_drivers[] = {
 	&mtk_disp_color_driver,
 	&mtk_disp_gamma_driver,
 	&mtk_disp_merge_driver,
+	&mtk_disp_ovl_adaptor_driver,
 	&mtk_disp_ovl_driver,
 	&mtk_disp_rdma_driver,
 	&mtk_dpi_driver,