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From:   Hsiao Chien Sung <shawn.sung@mediatek.com>
To:     Matthias Brugger <matthias.bgg@gmail.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
CC:     <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>, <devicetree@vger.kernel.org>,
        <Project_Global_Chrome_Upstream_Group@mediatek.com>,
        Chun-Kuang Hu <chunkuang.hu@kernel.org>,
        Singo Chang <singo.chang@mediatek.com>,
        Nancy Lin <nancy.lin@mediatek.com>,
        Jason-JH Lin <jason-jh.lin@mediatek.com>,
        Hsiao Chein Sung <shawn.sung@mediatek.com>,
        Fei Shao <fshao@google.com>
Subject: [PATCH v1 4/6] drm/mediatek: mt8188: Modify display driver for VDOSYS1
Date:   Wed, 7 Jun 2023 14:11:19 +0800
Message-ID: <20230607061121.6732-5-shawn.sung@mediatek.com>
In-Reply-To: <20230607061121.6732-1-shawn.sung@mediatek.com>
References: <20230607061121.6732-1-shawn.sung@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

- Modify MUTEX and component preparation logic for better compatibility
- Adjust display module probe sequence to avoid probe deferral

Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_disp_merge.c     |   3 +-
 .../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c   | 100 ++++++++++--------
 drivers/gpu/drm/mediatek/mtk_drm_drv.c        |  28 ++++-
 drivers/gpu/drm/mediatek/mtk_ethdr.c          |   1 +
 drivers/gpu/drm/mediatek/mtk_mdp_rdma.c       |   1 +
 5 files changed, 84 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
index 6428b6203ffe..2a30e41c246f 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
@@ -104,7 +104,7 @@ void mtk_merge_stop_cmdq(struct device *dev, struct cmdq_pkt *cmdq_pkt)
 	mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs,
 		      DISP_REG_MERGE_CTRL);

-	if (priv->async_clk)
+	if (!cmdq_pkt && priv->async_clk)
 		reset_control_reset(priv->reset_ctl);
 }

@@ -303,6 +303,7 @@ static int mtk_disp_merge_remove(struct platform_device *pdev)
 }

 static const struct of_device_id mtk_disp_merge_driver_dt_match[] = {
+	{ .compatible = "mediatek,mt8188-disp-merge", },
 	{ .compatible = "mediatek,mt8195-disp-merge", },
 	{},
 };
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
index c0a38f5217ee..e1d8d4765af8 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -51,6 +51,7 @@ enum mtk_ovl_adaptor_comp_id {

 struct ovl_adaptor_comp_match {
 	enum mtk_ovl_adaptor_comp_type type;
+	enum mtk_ddp_comp_id comp_id;
 	int alias_id;
 };

@@ -67,19 +68,19 @@ static const char * const private_comp_stem[OVL_ADAPTOR_TYPE_NUM] = {
 };

 static const struct ovl_adaptor_comp_match comp_matches[OVL_ADAPTOR_ID_MAX] = {
-	[OVL_ADAPTOR_MDP_RDMA0]	= { OVL_ADAPTOR_TYPE_RDMA, 0 },
-	[OVL_ADAPTOR_MDP_RDMA1]	= { OVL_ADAPTOR_TYPE_RDMA, 1 },
-	[OVL_ADAPTOR_MDP_RDMA2]	= { OVL_ADAPTOR_TYPE_RDMA, 2 },
-	[OVL_ADAPTOR_MDP_RDMA3]	= { OVL_ADAPTOR_TYPE_RDMA, 3 },
-	[OVL_ADAPTOR_MDP_RDMA4]	= { OVL_ADAPTOR_TYPE_RDMA, 4 },
-	[OVL_ADAPTOR_MDP_RDMA5]	= { OVL_ADAPTOR_TYPE_RDMA, 5 },
-	[OVL_ADAPTOR_MDP_RDMA6]	= { OVL_ADAPTOR_TYPE_RDMA, 6 },
-	[OVL_ADAPTOR_MDP_RDMA7]	= { OVL_ADAPTOR_TYPE_RDMA, 7 },
-	[OVL_ADAPTOR_MERGE0]	= { OVL_ADAPTOR_TYPE_MERGE, 1 },
-	[OVL_ADAPTOR_MERGE1]	= { OVL_ADAPTOR_TYPE_MERGE, 2 },
-	[OVL_ADAPTOR_MERGE2]	= { OVL_ADAPTOR_TYPE_MERGE, 3 },
-	[OVL_ADAPTOR_MERGE3]	= { OVL_ADAPTOR_TYPE_MERGE, 4 },
-	[OVL_ADAPTOR_ETHDR0]	= { OVL_ADAPTOR_TYPE_ETHDR, 0 },
+	[OVL_ADAPTOR_MDP_RDMA0] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA0, 0 },
+	[OVL_ADAPTOR_MDP_RDMA1] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA1, 1 },
+	[OVL_ADAPTOR_MDP_RDMA2] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA2, 2 },
+	[OVL_ADAPTOR_MDP_RDMA3] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA3, 3 },
+	[OVL_ADAPTOR_MDP_RDMA4] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA4, 4 },
+	[OVL_ADAPTOR_MDP_RDMA5] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA5, 5 },
+	[OVL_ADAPTOR_MDP_RDMA6] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA6, 6 },
+	[OVL_ADAPTOR_MDP_RDMA7] = { OVL_ADAPTOR_TYPE_RDMA, DDP_COMPONENT_MDP_RDMA7, 7 },
+	[OVL_ADAPTOR_MERGE0] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE1, 1 },
+	[OVL_ADAPTOR_MERGE1] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE2, 2 },
+	[OVL_ADAPTOR_MERGE2] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE3, 3 },
+	[OVL_ADAPTOR_MERGE3] = { OVL_ADAPTOR_TYPE_MERGE, DDP_COMPONENT_MERGE4, 4 },
+	[OVL_ADAPTOR_ETHDR0] = { OVL_ADAPTOR_TYPE_ETHDR, DDP_COMPONENT_ETHDR_MIXER, 0 },
 };

 void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int idx,
@@ -192,6 +193,8 @@ int mtk_ovl_adaptor_clk_enable(struct device *dev)

 	for (i = 0; i < OVL_ADAPTOR_MERGE0; i++) {
 		comp = ovl_adaptor->ovl_adaptor_comp[i];
+		if (!comp)
+			continue;
 		ret = pm_runtime_get_sync(comp);
 		if (ret < 0) {
 			dev_err(dev, "Failed to enable power domain %d, err %d\n", i, ret);
@@ -201,7 +204,8 @@ int mtk_ovl_adaptor_clk_enable(struct device *dev)

 	for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
 		comp = ovl_adaptor->ovl_adaptor_comp[i];
-
+		if (!comp)
+			continue;
 		if (i < OVL_ADAPTOR_MERGE0)
 			ret = mtk_mdp_rdma_clk_enable(comp);
 		else if (i < OVL_ADAPTOR_ETHDR0)
@@ -219,6 +223,8 @@ int mtk_ovl_adaptor_clk_enable(struct device *dev)
 clk_err:
 	while (--i >= 0) {
 		comp = ovl_adaptor->ovl_adaptor_comp[i];
+		if (!comp)
+			continue;
 		if (i < OVL_ADAPTOR_MERGE0)
 			mtk_mdp_rdma_clk_disable(comp);
 		else if (i < OVL_ADAPTOR_ETHDR0)
@@ -229,8 +235,12 @@ int mtk_ovl_adaptor_clk_enable(struct device *dev)
 	i = OVL_ADAPTOR_MERGE0;

 pwr_err:
-	while (--i >= 0)
-		pm_runtime_put(ovl_adaptor->ovl_adaptor_comp[i]);
+	while (--i >= 0) {
+		comp = ovl_adaptor->ovl_adaptor_comp[i];
+		if (!comp)
+			continue;
+		pm_runtime_put(comp);
+	}

 	return ret;
 }
@@ -243,7 +253,8 @@ void mtk_ovl_adaptor_clk_disable(struct device *dev)

 	for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
 		comp = ovl_adaptor->ovl_adaptor_comp[i];
-
+		if (!comp)
+			continue;
 		if (i < OVL_ADAPTOR_MERGE0) {
 			mtk_mdp_rdma_clk_disable(comp);
 			pm_runtime_put(comp);
@@ -313,36 +324,26 @@ size_t mtk_ovl_adaptor_get_num_formats(struct device *dev)

 void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex)
 {
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA0);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA1);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA2);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA3);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA4);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA5);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA6);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA7);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE1);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE2);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE3);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MERGE4);
-	mtk_mutex_add_comp(mutex, DDP_COMPONENT_ETHDR_MIXER);
+	struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
+	int i;
+
+	for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
+		if (!ovl_adaptor->ovl_adaptor_comp[i])
+			continue;
+		mtk_mutex_add_comp(mutex, comp_matches[i].comp_id);
+	}
 }

 void mtk_ovl_adaptor_remove_comp(struct device *dev, struct mtk_mutex *mutex)
 {
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA0);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA1);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA2);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA3);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA4);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA5);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA6);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MDP_RDMA7);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE1);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE2);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE3);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_MERGE4);
-	mtk_mutex_remove_comp(mutex, DDP_COMPONENT_ETHDR_MIXER);
+	struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
+	int i;
+
+	for (i = 0; i < OVL_ADAPTOR_ID_MAX; i++) {
+		if (!ovl_adaptor->ovl_adaptor_comp[i])
+			continue;
+		mtk_mutex_remove_comp(mutex, comp_matches[i].comp_id);
+	}
 }

 void mtk_ovl_adaptor_connect(struct device *dev, struct device *mmsys_dev, unsigned int next)
@@ -386,6 +387,15 @@ static int ovl_adaptor_comp_get_id(struct device *dev, struct device_node *node,

 static const struct of_device_id mtk_ovl_adaptor_comp_dt_ids[] = {
 	{
+		.compatible = "mediatek,mt8188-vdo1-rdma",
+		.data = (void *)OVL_ADAPTOR_TYPE_RDMA,
+	}, {
+		.compatible = "mediatek,mt8188-disp-merge",
+		.data = (void *)OVL_ADAPTOR_TYPE_MERGE,
+	}, {
+		.compatible = "mediatek,mt8188-disp-ethdr",
+		.data = (void *)OVL_ADAPTOR_TYPE_ETHDR,
+	}, {
 		.compatible = "mediatek,mt8195-vdo1-rdma",
 		.data = (void *)OVL_ADAPTOR_TYPE_RDMA,
 	}, {
@@ -466,6 +476,9 @@ static int mtk_disp_ovl_adaptor_comp_bind(struct device *dev, struct device *mas
 static void mtk_disp_ovl_adaptor_comp_unbind(struct device *dev, struct device *master,
 					     void *data)
 {
+	struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
+
+	priv->children_bound = false;
 }

 static const struct component_ops mtk_disp_ovl_adaptor_comp_ops = {
@@ -483,6 +496,7 @@ static int mtk_disp_ovl_adaptor_master_bind(struct device *dev)
 		return dev_err_probe(dev, ret, "component_bind_all failed!\n");

 	priv->children_bound = true;
+
 	return 0;
 }

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 6dcb4ba2466c..87dadd129c22 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -188,6 +188,12 @@ static const unsigned int mt8188_mtk_ddp_main[] = {
 	DDP_COMPONENT_DP_INTF0,
 };

+static const unsigned int mt8188_mtk_ddp_ext[] = {
+	DDP_COMPONENT_DRM_OVL_ADAPTOR,
+	DDP_COMPONENT_MERGE5,
+	DDP_COMPONENT_DP_INTF1,
+};
+
 static const unsigned int mt8192_mtk_ddp_main[] = {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_OVL_2L0,
@@ -287,6 +293,14 @@ static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = {
 static const struct mtk_mmsys_driver_data mt8188_vdosys0_driver_data = {
 	.main_path = mt8188_mtk_ddp_main,
 	.main_len = ARRAY_SIZE(mt8188_mtk_ddp_main),
+	.mmsys_dev_num = 2,
+};
+
+static const struct mtk_mmsys_driver_data mt8188_vdosys1_driver_data = {
+	.ext_path = mt8188_mtk_ddp_ext,
+	.ext_len = ARRAY_SIZE(mt8188_mtk_ddp_ext),
+	.mmsys_id = 1,
+	.mmsys_dev_num = 2,
 };

 static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {
@@ -327,6 +341,8 @@ static const struct of_device_id mtk_drm_of_ids[] = {
 	  .data = &mt8186_mmsys_driver_data},
 	{ .compatible = "mediatek,mt8188-vdosys0",
 	  .data = &mt8188_vdosys0_driver_data},
+	{ .compatible = "mediatek,mt8188-vdosys1",
+	  .data = &mt8188_vdosys1_driver_data},
 	{ .compatible = "mediatek,mt8192-mmsys",
 	  .data = &mt8192_mmsys_driver_data},
 	{ .compatible = "mediatek,mt8195-mmsys",
@@ -682,6 +698,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 	  .data = (void *)MTK_DISP_GAMMA, },
 	{ .compatible = "mediatek,mt8183-disp-gamma",
 	  .data = (void *)MTK_DISP_GAMMA, },
+	{ .compatible = "mediatek,mt8188-disp-merge",
+	  .data = (void *)MTK_DISP_MERGE },
 	{ .compatible = "mediatek,mt8195-disp-merge",
 	  .data = (void *)MTK_DISP_MERGE },
 	{ .compatible = "mediatek,mt2701-disp-mutex",
@@ -965,15 +983,15 @@ static struct platform_driver * const mtk_drm_drivers[] = {
 	&mtk_disp_ccorr_driver,
 	&mtk_disp_color_driver,
 	&mtk_disp_gamma_driver,
+	&mtk_disp_rdma_driver,
+	&mtk_mdp_rdma_driver,
 	&mtk_disp_merge_driver,
-	&mtk_disp_ovl_adaptor_driver,
+	&mtk_ethdr_driver,
 	&mtk_disp_ovl_driver,
-	&mtk_disp_rdma_driver,
+	&mtk_disp_ovl_adaptor_driver,
+	&mtk_dsi_driver,
 	&mtk_dpi_driver,
 	&mtk_drm_platform_driver,
-	&mtk_dsi_driver,
-	&mtk_ethdr_driver,
-	&mtk_mdp_rdma_driver,
 };

 static int __init mtk_drm_init(void)
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c
index 73dc4da3ba3b..b5a6b67f2db9 100644
--- a/drivers/gpu/drm/mediatek/mtk_ethdr.c
+++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c
@@ -353,6 +353,7 @@ static int mtk_ethdr_remove(struct platform_device *pdev)
 }

 static const struct of_device_id mtk_ethdr_driver_dt_match[] = {
+	{ .compatible = "mediatek,mt8188-disp-ethdr"},
 	{ .compatible = "mediatek,mt8195-disp-ethdr"},
 	{},
 };
diff --git a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
index e06db6e56b5f..06d5c9abb515 100644
--- a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
@@ -323,6 +323,7 @@ static int mtk_mdp_rdma_remove(struct platform_device *pdev)
 }

 static const struct of_device_id mtk_mdp_rdma_driver_dt_match[] = {
+	{ .compatible = "mediatek,mt8188-vdo1-rdma", },
 	{ .compatible = "mediatek,mt8195-vdo1-rdma", },
 	{},
 };
--
2.18.0