[PATCH v13 1/6] soc: mediatek: mutex: add common interface to accommodate multiple modules operationg MUTEX

[Moudy Ho <moudy.ho@mediatek.com>]

In order to allow multiple modules to operate MUTEX hardware through
a common interfrace, a flexible index "mtk_mutex_table_index" needs to
be added to replace original component ID so that like DDP and MDP
can add their own MUTEX table settings independently.

In addition, 4 generic interface "mtk_mutex_set_mod", "mtk_mutex_set_sof",
"mtk_mutex_clear_mod" and "mtk_mutex_clear_sof" have been added, which is
expected to replace the "mtk_mutex_add_comp" and "mtk_mutex_remove_comp"
pair originally dedicated to DDP in the future.

Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
---
 drivers/soc/mediatek/mtk-mutex.c       | 122 +++++++++++++++++++++++++
 include/linux/soc/mediatek/mtk-mutex.h |  33 +++++++
 2 files changed, 155 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c
index aaf8fc1abb43..778b01ce9e8f 100644
--- a/drivers/soc/mediatek/mtk-mutex.c
+++ b/drivers/soc/mediatek/mtk-mutex.c
@@ -156,6 +156,7 @@ struct mtk_mutex_data {
 	const unsigned int *mutex_sof;
 	const unsigned int mutex_mod_reg;
 	const unsigned int mutex_sof_reg;
+	const unsigned long long *mutex_table_mod;
 	const bool no_clk;
 };
 
@@ -445,6 +446,84 @@ void mtk_mutex_add_comp(struct mtk_mutex *mutex,
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_add_comp);
 
+void mtk_mutex_set_mod(struct mtk_mutex *mutex,
+		       enum mtk_mutex_table_index idx)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+	unsigned int reg;
+	unsigned int offset;
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	if (idx == MUTEX_TABLE_IDX_NONE ||
+	    idx >= MUTEX_TABLE_IDX_MAX)
+		return;
+
+	if (mtx->data->mutex_table_mod[idx] <= BIT(31)) {
+		offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
+					    mutex->id);
+		reg = readl_relaxed(mtx->regs + offset);
+		reg |= mtx->data->mutex_table_mod[idx];
+		writel_relaxed(reg, mtx->regs + offset);
+	} else {
+		offset = DISP_REG_MUTEX_MOD2(mutex->id);
+		reg = readl_relaxed(mtx->regs + offset);
+		reg |= (mtx->data->mutex_table_mod[idx] >> 32);
+		writel_relaxed(reg, mtx->regs + offset);
+	}
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_set_mod);
+
+void mtk_mutex_set_sof(struct mtk_mutex *mutex,
+		       enum mtk_mutex_table_index idx)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+	unsigned int sof_id;
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	if (idx == MUTEX_TABLE_IDX_NONE ||
+	    idx >= MUTEX_TABLE_IDX_MAX)
+		return;
+
+	switch (idx) {
+	case MUTEX_TABLE_IDX_DDP_DSI0:
+		sof_id = MUTEX_SOF_DSI0;
+		break;
+	case MUTEX_TABLE_IDX_DDP_DSI1:
+		sof_id = MUTEX_SOF_DSI0;
+		break;
+	case MUTEX_TABLE_IDX_DDP_DSI2:
+		sof_id = MUTEX_SOF_DSI2;
+		break;
+	case MUTEX_TABLE_IDX_DDP_DSI3:
+		sof_id = MUTEX_SOF_DSI3;
+		break;
+	case MUTEX_TABLE_IDX_DDP_DPI0:
+		sof_id = MUTEX_SOF_DPI0;
+		break;
+	case MUTEX_TABLE_IDX_DDP_DPI1:
+		sof_id = MUTEX_SOF_DPI1;
+		break;
+	case MUTEX_TABLE_IDX_DDP_DP_INTF0:
+		sof_id = MUTEX_SOF_DP_INTF0;
+		break;
+	case MUTEX_TABLE_IDX_DDP_DP_INTF1:
+		sof_id = MUTEX_SOF_DP_INTF1;
+		break;
+	default:
+		sof_id = MUTEX_SOF_SINGLE_MODE;
+		break;
+	}
+
+	writel_relaxed(mtx->data->mutex_sof[sof_id],
+		       mtx->regs +
+		       DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg, mutex->id));
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_set_sof);
+
 void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
 			   enum mtk_ddp_comp_id id)
 {
@@ -485,6 +564,49 @@ void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_remove_comp);
 
+void mtk_mutex_clear_mod(struct mtk_mutex *mutex,
+			 enum mtk_mutex_table_index idx)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+	unsigned int reg;
+	unsigned int offset;
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	if (idx == MUTEX_TABLE_IDX_NONE ||
+	    idx >= MUTEX_TABLE_IDX_MAX)
+		return;
+
+	if (mtx->data->mutex_table_mod[idx] <= BIT(31)) {
+		offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
+					    mutex->id);
+		reg = readl_relaxed(mtx->regs + offset);
+		reg &= ~(mtx->data->mutex_table_mod[idx]);
+		writel_relaxed(reg, mtx->regs + offset);
+	} else {
+		offset = DISP_REG_MUTEX_MOD2(mutex->id);
+		reg = readl_relaxed(mtx->regs + offset);
+		reg &= ~(mtx->data->mutex_table_mod[idx] >> 32);
+		writel_relaxed(reg, mtx->regs + offset);
+	}
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_clear_mod);
+
+void mtk_mutex_clear_sof(struct mtk_mutex *mutex)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	writel_relaxed(MUTEX_SOF_SINGLE_MODE,
+		       mtx->regs +
+		       DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg,
+					  mutex->id));
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_clear_sof);
+
 void mtk_mutex_enable(struct mtk_mutex *mutex)
 {
 	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
diff --git a/include/linux/soc/mediatek/mtk-mutex.h b/include/linux/soc/mediatek/mtk-mutex.h
index 6fe4ffbde290..c8355bb0e6d6 100644
--- a/include/linux/soc/mediatek/mtk-mutex.h
+++ b/include/linux/soc/mediatek/mtk-mutex.h
@@ -10,14 +10,47 @@ struct regmap;
 struct device;
 struct mtk_mutex;
 
+enum mtk_mutex_table_index {
+	MUTEX_TABLE_IDX_NONE = 0,	/* Invalid engine */
+
+	/* MDP table index */
+	MUTEX_TABLE_IDX_MDP_RDMA0,
+	MUTEX_TABLE_IDX_MDP_RSZ0,
+	MUTEX_TABLE_IDX_MDP_RSZ1,
+	MUTEX_TABLE_IDX_MDP_TDSHP0,
+	MUTEX_TABLE_IDX_MDP_WROT0,
+	MUTEX_TABLE_IDX_MDP_WDMA,
+	MUTEX_TABLE_IDX_MDP_AAL0,
+	MUTEX_TABLE_IDX_MDP_CCORR0,
+
+	/* DDP table index */
+	MUTEX_TABLE_IDX_DDP_DSI0,
+	MUTEX_TABLE_IDX_DDP_DSI1,
+	MUTEX_TABLE_IDX_DDP_DSI2,
+	MUTEX_TABLE_IDX_DDP_DSI3,
+	MUTEX_TABLE_IDX_DDP_DPI0,
+	MUTEX_TABLE_IDX_DDP_DPI1,
+	MUTEX_TABLE_IDX_DDP_DP_INTF0,
+	MUTEX_TABLE_IDX_DDP_DP_INTF1,
+
+	MUTEX_TABLE_IDX_MAX		/* ALWAYS keep at the end */
+};
+
 struct mtk_mutex *mtk_mutex_get(struct device *dev);
 int mtk_mutex_prepare(struct mtk_mutex *mutex);
 void mtk_mutex_add_comp(struct mtk_mutex *mutex,
 			enum mtk_ddp_comp_id id);
+void mtk_mutex_set_mod(struct mtk_mutex *mutex,
+		       enum mtk_mutex_table_index idx);
+void mtk_mutex_set_sof(struct mtk_mutex *mutex,
+		       enum mtk_mutex_table_index idx);
 void mtk_mutex_enable(struct mtk_mutex *mutex);
 void mtk_mutex_disable(struct mtk_mutex *mutex);
 void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
 			   enum mtk_ddp_comp_id id);
+void mtk_mutex_clear_mod(struct mtk_mutex *mutex,
+			 enum mtk_mutex_table_index idx);
+void mtk_mutex_clear_sof(struct mtk_mutex *mutex);
 void mtk_mutex_unprepare(struct mtk_mutex *mutex);
 void mtk_mutex_put(struct mtk_mutex *mutex);
 void mtk_mutex_acquire(struct mtk_mutex *mutex);
-- 
2.18.0