[PATCH v6 2/5] soc: mediatek: mutex: add support for MDP
Moudy Ho
moudy.ho at mediatek.com
Thu Aug 19 00:09:51 PDT 2021
Add functions to support MDP:
1. Get mutex function
2. Enable/disable mutex
3. Enable MDP's modules
4. Write register via CMDQ
Add MDP related settings for 8183 SoC
1. Register settings
Signed-off-by: Moudy Ho <moudy.ho at mediatek.com>
---
drivers/soc/mediatek/mtk-mutex.c | 106 +++++++++++++++++++++++--
include/linux/soc/mediatek/mtk-mutex.h | 8 ++
2 files changed, 108 insertions(+), 6 deletions(-)
diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c
index 2e4bcc300576..935f2849a094 100644
--- a/drivers/soc/mediatek/mtk-mutex.c
+++ b/drivers/soc/mediatek/mtk-mutex.c
@@ -7,9 +7,11 @@
#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-cmdq.h>
#include <linux/soc/mediatek/mtk-mutex.h>
#define MT2701_MUTEX0_MOD0 0x2c
@@ -107,6 +109,10 @@
#define MT8183_MUTEX_EOF_DSI0 (MT8183_MUTEX_SOF_DSI0 << 6)
#define MT8183_MUTEX_EOF_DPI0 (MT8183_MUTEX_SOF_DPI0 << 6)
+#define MT8183_MUTEX_MDP_START 5
+#define MT8183_MUTEX_MDP_MOD_MASK 0x07FFFFFF
+#define MT8183_MUTEX_MDP_SOF_MASK 0x00000007
+
struct mtk_mutex {
int id;
bool claimed;
@@ -123,11 +129,14 @@ enum mtk_mutex_sof_id {
};
struct mtk_mutex_data {
- const unsigned int *mutex_mod;
- const unsigned int *mutex_sof;
- const unsigned int mutex_mod_reg;
- const unsigned int mutex_sof_reg;
- const bool no_clk;
+ const unsigned int *mutex_mod;
+ const unsigned int *mutex_sof;
+ const unsigned int mutex_mod_reg;
+ const unsigned int mutex_sof_reg;
+ const unsigned int *mutex_mdp_offset;
+ const unsigned int mutex_mdp_mod_mask;
+ const unsigned int mutex_mdp_sof_mask;
+ const bool no_clk;
};
struct mtk_mutex_ctx {
@@ -136,6 +145,8 @@ struct mtk_mutex_ctx {
void __iomem *regs;
struct mtk_mutex mutex[10];
const struct mtk_mutex_data *data;
+ phys_addr_t addr;
+ u8 subsys_id;
};
static const unsigned int mt2701_mutex_mod[DDP_COMPONENT_ID_MAX] = {
@@ -238,6 +249,14 @@ static const unsigned int mt8183_mutex_sof[MUTEX_SOF_DSI3 + 1] = {
[MUTEX_SOF_DPI0] = MT8183_MUTEX_SOF_DPI0 | MT8183_MUTEX_EOF_DPI0,
};
+/* indicate which mutex is used by each pipepline */
+static const unsigned int mt8183_mutex_mdp_offset[MDP_PIPE_MAX] = {
+ [MDP_PIPE_IMGI] = MT8183_MUTEX_MDP_START,
+ [MDP_PIPE_RDMA0] = MT8183_MUTEX_MDP_START + 1,
+ [MDP_PIPE_WPEI] = MT8183_MUTEX_MDP_START + 2,
+ [MDP_PIPE_WPEI2] = MT8183_MUTEX_MDP_START + 3
+};
+
static const struct mtk_mutex_data mt2701_mutex_driver_data = {
.mutex_mod = mt2701_mutex_mod,
.mutex_sof = mt2712_mutex_sof,
@@ -272,6 +291,9 @@ static const struct mtk_mutex_data mt8183_mutex_driver_data = {
.mutex_sof = mt8183_mutex_sof,
.mutex_mod_reg = MT8183_MUTEX0_MOD0,
.mutex_sof_reg = MT8183_MUTEX0_SOF0,
+ .mutex_mdp_offset = mt8183_mutex_mdp_offset,
+ .mutex_mdp_mod_mask = MT8183_MUTEX_MDP_MOD_MASK,
+ .mutex_mdp_sof_mask = MT8183_MUTEX_MDP_SOF_MASK,
.no_clk = true,
};
@@ -290,6 +312,21 @@ struct mtk_mutex *mtk_mutex_get(struct device *dev)
}
EXPORT_SYMBOL_GPL(mtk_mutex_get);
+struct mtk_mutex *mtk_mutex_mdp_get(struct device *dev,
+ enum mtk_mdp_pipe_id id)
+{
+ struct mtk_mutex_ctx *mtx = dev_get_drvdata(dev);
+ int i = mtx->data->mutex_mdp_offset[id];
+
+ if (!mtx->mutex[i].claimed) {
+ mtx->mutex[i].claimed = true;
+ return &mtx->mutex[i];
+ }
+
+ return ERR_PTR(-EBUSY);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_mdp_get);
+
void mtk_mutex_put(struct mtk_mutex *mutex)
{
struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
@@ -369,6 +406,25 @@ void mtk_mutex_add_comp(struct mtk_mutex *mutex,
}
EXPORT_SYMBOL_GPL(mtk_mutex_add_comp);
+void mtk_mutex_add_mdp_mod(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->subsys_id, 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->subsys_id, mtx->addr + offset,
+ 0, mtx->data->mutex_mdp_sof_mask);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_add_mdp_mod);
+
void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
enum mtk_ddp_comp_id id)
{
@@ -420,6 +476,20 @@ 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->subsys_id,
+ mtx->addr + DISP_REG_MUTEX_EN(mutex->id),
+ 0x1, 0x00000001);
+}
+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,
@@ -431,6 +501,20 @@ 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->subsys_id,
+ mtx->addr + DISP_REG_MUTEX_EN(mutex->id),
+ 0x0, 0x00000001);
+}
+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,
@@ -458,7 +542,8 @@ static int mtk_mutex_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct mtk_mutex_ctx *mtx;
- struct resource *regs;
+ struct cmdq_client_reg cmdq_reg;
+ struct resource *regs, addr;
int i;
mtx = devm_kzalloc(dev, sizeof(*mtx), GFP_KERNEL);
@@ -479,6 +564,15 @@ 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 (cmdq_dev_get_client_reg(dev, &cmdq_reg, 0) != 0)
+ dev_info(dev, "cmdq subsys id has not been set\n");
+ mtx->subsys_id = cmdq_reg.subsys;
+
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 6fe4ffbde290..d08b98419dd9 100644
--- a/include/linux/soc/mediatek/mtk-mutex.h
+++ b/include/linux/soc/mediatek/mtk-mutex.h
@@ -11,11 +11,19 @@ struct device;
struct mtk_mutex;
struct mtk_mutex *mtk_mutex_get(struct device *dev);
+struct mtk_mutex *mtk_mutex_mdp_get(struct device *dev,
+ enum mtk_mdp_pipe_id id);
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_add_mdp_mod(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
More information about the linux-arm-kernel
mailing list