[PATCH v12 4/4] soc: mediatek: mutex: add functions that operate registers by CMDQ

[Moudy Ho]

Considering that some functions have timing requirements
in specific situation, this patch adds several interface that
operate registers by CMDQ.

Signed-off-by: Moudy Ho <moudy.ho@xxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
 drivers/soc/mediatek/mtk-mutex.c       | 72 +++++++++++++++++++++++++-
 include/linux/soc/mediatek/mtk-mutex.h |  6 +++
 2 files changed, 76 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c
index a6268ecde240..a45864183cd1 100644
--- a/drivers/soc/mediatek/mtk-mutex.c
+++ b/drivers/soc/mediatek/mtk-mutex.c
@@ -7,10 +7,14 @@
 #include <linux/iopoll.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
+#include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/soc/mediatek/mtk-mmsys.h>
 #include <linux/soc/mediatek/mtk-mutex.h>
+#include <linux/soc/mediatek/mtk-cmdq.h>
+
+#define MTK_MUTEX_ENABLE			BIT(0)
 
 #define MT2701_MUTEX0_MOD0			0x2c
 #define MT2701_MUTEX0_SOF0			0x30
@@ -173,6 +177,7 @@ struct mtk_mutex_data {
 	const unsigned int mutex_mdp_mod_mask;
 	const unsigned int mutex_mdp_sof_mask;
 	const bool no_clk;
+	const bool has_gce_client_reg;
 };
 
 struct mtk_mutex_ctx {
@@ -181,6 +186,8 @@ struct mtk_mutex_ctx {
 	void __iomem			*regs;
 	struct mtk_mutex		mutex[10];
 	const struct mtk_mutex_data	*data;
+	phys_addr_t			addr;
+	struct cmdq_client_reg		cmdq_reg;
 };
 
 static const unsigned int mt2701_mutex_mod[DDP_COMPONENT_ID_MAX] = {
@@ -374,6 +381,7 @@ static const struct mtk_mutex_data mt8183_mutex_driver_data = {
 	.mutex_mdp_mod_mask = MT8183_MUTEX_MDP_MOD_MASK,
 	.mutex_mdp_sof_mask = MT8183_MUTEX_MDP_SOF_MASK,
 	.no_clk = true,
+	.has_gce_client_reg = true,
 };
 
 static const struct mtk_mutex_data mt8186_mutex_driver_data = {
@@ -553,6 +561,25 @@ u32 mtk_mutex_get_mdp_mod(struct mtk_mutex *mutex, enum mtk_mdp_comp_id id)
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_get_mdp_mod);
 
+void mtk_mutex_add_mod_by_cmdq(struct mtk_mutex *mutex, u32 mod,
+			       struct mmsys_cmdq_cmd *cmd)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+	unsigned int offset;
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg, mutex->id);
+	cmdq_pkt_write_mask(cmd->pkt, mtx->cmdq_reg.subsys, mtx->addr + offset,
+			    mod, mtx->data->mutex_mdp_mod_mask);
+
+	offset = DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg, mutex->id);
+	cmdq_pkt_write_mask(cmd->pkt, mtx->cmdq_reg.subsys, mtx->addr + offset,
+			    0, mtx->data->mutex_mdp_sof_mask);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_add_mod_by_cmdq);
+
 void mtk_mutex_enable(struct mtk_mutex *mutex)
 {
 	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
@@ -564,6 +591,20 @@ void mtk_mutex_enable(struct mtk_mutex *mutex)
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_enable);
 
+void mtk_mutex_enable_by_cmdq(struct mtk_mutex *mutex,
+			      struct mmsys_cmdq_cmd *cmd)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	cmdq_pkt_write_mask(cmd->pkt, mtx->cmdq_reg.subsys,
+			    mtx->addr + DISP_REG_MUTEX_EN(mutex->id),
+			    MTK_MUTEX_ENABLE, MTK_MUTEX_ENABLE);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_enable_by_cmdq);
+
 void mtk_mutex_disable(struct mtk_mutex *mutex)
 {
 	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
@@ -575,6 +616,20 @@ void mtk_mutex_disable(struct mtk_mutex *mutex)
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_disable);
 
+void mtk_mutex_disable_by_cmdq(struct mtk_mutex *mutex,
+			       struct mmsys_cmdq_cmd *cmd)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	cmdq_pkt_write_mask(cmd->pkt, mtx->cmdq_reg.subsys,
+			    mtx->addr + DISP_REG_MUTEX_EN(mutex->id),
+			    0x0, MTK_MUTEX_ENABLE);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_disable_by_cmdq);
+
 void mtk_mutex_acquire(struct mtk_mutex *mutex)
 {
 	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
@@ -602,8 +657,8 @@ static int mtk_mutex_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_mutex_ctx *mtx;
-	struct resource *regs;
-	int i;
+	struct resource *regs, addr;
+	int i, ret;
 
 	mtx = devm_kzalloc(dev, sizeof(*mtx), GFP_KERNEL);
 	if (!mtx)
@@ -623,6 +678,19 @@ static int mtk_mutex_probe(struct platform_device *pdev)
 		}
 	}
 
+	if (of_address_to_resource(dev->of_node, 0, &addr) < 0)
+		mtx->addr = 0L;
+	else
+		mtx->addr = addr.start;
+
+	if (mtx->data->has_gce_client_reg) {
+		ret = cmdq_dev_get_client_reg(dev, &mtx->cmdq_reg, 0);
+		if (ret) {
+			dev_err(dev, "No mediatek,gce-client-reg!\n");
+			return ret;
+		}
+	}
+
 	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	mtx->regs = devm_ioremap_resource(dev, regs);
 	if (IS_ERR(mtx->regs)) {
diff --git a/include/linux/soc/mediatek/mtk-mutex.h b/include/linux/soc/mediatek/mtk-mutex.h
index b2608f4220ee..05de7ad4a124 100644
--- a/include/linux/soc/mediatek/mtk-mutex.h
+++ b/include/linux/soc/mediatek/mtk-mutex.h
@@ -17,8 +17,14 @@ int mtk_mutex_prepare(struct mtk_mutex *mutex);
 void mtk_mutex_add_comp(struct mtk_mutex *mutex,
 			enum mtk_ddp_comp_id id);
 u32 mtk_mutex_get_mdp_mod(struct mtk_mutex *mutex, enum mtk_mdp_comp_id id);
+void mtk_mutex_add_mod_by_cmdq(struct mtk_mutex *mutex, u32 mod,
+			       struct mmsys_cmdq_cmd *cmd);
 void mtk_mutex_enable(struct mtk_mutex *mutex);
+void mtk_mutex_enable_by_cmdq(struct mtk_mutex *mutex,
+			      struct mmsys_cmdq_cmd *cmd);
 void mtk_mutex_disable(struct mtk_mutex *mutex);
+void mtk_mutex_disable_by_cmdq(struct mtk_mutex *mutex,
+			       struct mmsys_cmdq_cmd *cmd);
 void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
 			   enum mtk_ddp_comp_id id);
 void mtk_mutex_unprepare(struct mtk_mutex *mutex);
-- 
2.18.0