[PATCH v4 0/3] Remove cl in struct cmdq_pkt

[PATCH v4 0/3] Remove cl in struct cmdq_pkt

[Chun-Kuang Hu]

cl in struct cmdq_pkt is used to store struct cmdq_client, but every client
driver has the struct cmdq_client information, so it's not necessary to
store struct cmdq_client in struct cmdq_pkt. Because mailbox maintainer
do not like to mix mailbox patch with other patches in a series, so
mailbox patch [1] would be sent independently.

Changes in v4:
1. Rebase onto mediatek-drm-next-6.12
2. Fix build error in mpd3 driver
Changes in v3:
1. Rebase onto Linux 6.11-rc1 and fix conflicts.
Changes in v2:
1. Fix typo of CMDQ_JUMP_RELATIVE
2. Refine cmdq_pkt_create() and cmdq_pkt_destroy()
3. Rename cmdq_pkt_jump() to cmdq_pkt_jump_abs()
4. Add cmdq_pkt_jump_rel() helper function
5. drm/mediatek: Use cmdq_pkt_create() and cmdq_pkt_destroy()
6. mtk-mdp3: Get fine-grain control of cmdq_pkt_finalize()
7. mtk-mdp3: Use cmdq_pkt_create() and cmdq_pkt_destroy()

[1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/commit/?h=mediatek-cmdq8&id=a1b2f7a7488285975c1f439086f1c4cc51a13bb9


Chun-Kuang Hu (3):
  media: platform: mtk-mdp3: Get fine-grain control of
    cmdq_pkt_finalize()
  media: platform: mtk-mdp3: Use cmdq_pkt_create() and
    cmdq_pkt_destroy()
  soc: mediatek: cmdq: Remove cmdq_pkt_finalize() helper function

 .../platform/mediatek/mdp3/mtk-mdp3-cmdq.c    | 49 +++----------------
 .../platform/mediatek/mdp3/mtk-mdp3-cmdq.h    |  1 +
 .../platform/mediatek/mdp3/mtk-mdp3-core.c    |  2 +
 .../platform/mediatek/mdp3/mtk-mdp3-core.h    |  1 +
 drivers/soc/mediatek/mtk-cmdq-helper.c        | 22 ---------
 include/linux/soc/mediatek/mtk-cmdq.h         | 13 -----
 6 files changed, 11 insertions(+), 77 deletions(-)

-- 
2.34.1

[PATCH v4 1/3] media: platform: mtk-mdp3: Get fine-grain control of cmdq_pkt_finalize()

[Chun-Kuang Hu]

In order to have fine-grained control, use cmdq_pkt_eoc() and
cmdq_pkt_jump_rel() to replace cmdq_pkt_finalize().

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c | 3 ++-
 drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 2 ++
 drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
index ea2ea119dd2a..ef5dade35fd3 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
@@ -676,7 +676,8 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
 		dev_err(dev, "mdp_path_config error %d\n", pp_idx);
 		goto err_free_path;
 	}
-	cmdq_pkt_finalize(&cmd->pkt);
+	cmdq_pkt_eoc(&cmd->pkt);
+	cmdq_pkt_jump_rel(&cmd->pkt, CMDQ_INST_SIZE, mdp->cmdq_shift_pa[pp_idx]);
 
 	for (i = 0; i < num_comp; i++) {
 		s32 inner_id = MDP_COMP_NONE;
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
index 37e7b985d52c..40623c1980bf 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
@@ -312,6 +312,8 @@ static int mdp_probe(struct platform_device *pdev)
 			ret = PTR_ERR(mdp->cmdq_clt[i]);
 			goto err_mbox_destroy;
 		}
+
+		mdp->cmdq_shift_pa[i] = cmdq_get_shift_pa(mdp->cmdq_clt[i]->chan);
 	}
 
 	init_waitqueue_head(&mdp->callback_wq);
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
index 430251f63754..05cade1d098e 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
@@ -126,6 +126,7 @@ struct mdp_dev {
 	u32					id_count;
 	struct ida				mdp_ida;
 	struct cmdq_client			*cmdq_clt[MDP_PP_MAX];
+	u8					cmdq_shift_pa[MDP_PP_MAX];
 	wait_queue_head_t			callback_wq;
 
 	struct v4l2_device			v4l2_dev;
-- 
2.34.1

[PATCH v4 2/3] media: platform: mtk-mdp3: Use cmdq_pkt_create() and cmdq_pkt_destroy()

[Chun-Kuang Hu]

Use cmdq_pkt_create() and cmdq_pkt_destroy() common function
instead of implementing mdp3 version.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 .../platform/mediatek/mdp3/mtk-mdp3-cmdq.c    | 46 ++-----------------
 .../platform/mediatek/mdp3/mtk-mdp3-cmdq.h    |  1 +
 2 files changed, 6 insertions(+), 41 deletions(-)

diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
index ef5dade35fd3..740a484c8eb4 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
@@ -471,43 +471,6 @@ static int mdp_path_config(struct mdp_dev *mdp, struct mdp_cmdq_cmd *cmd,
 	return 0;
 }
 
-static int mdp_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
-			       size_t size)
-{
-	struct device *dev;
-	dma_addr_t dma_addr;
-
-	pkt->va_base = kzalloc(size, GFP_KERNEL);
-	if (!pkt->va_base)
-		return -ENOMEM;
-
-	pkt->buf_size = size;
-	pkt->cl = (void *)client;
-
-	dev = client->chan->mbox->dev;
-	dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
-				  DMA_TO_DEVICE);
-	if (dma_mapping_error(dev, dma_addr)) {
-		dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
-		kfree(pkt->va_base);
-		return -ENOMEM;
-	}
-
-	pkt->pa_base = dma_addr;
-
-	return 0;
-}
-
-static void mdp_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
-{
-	struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
-
-	dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
-			 DMA_TO_DEVICE);
-	kfree(pkt->va_base);
-	pkt->va_base = NULL;
-}
-
 static void mdp_auto_release_work(struct work_struct *work)
 {
 	struct mdp_cmdq_cmd *cmd;
@@ -538,7 +501,7 @@ static void mdp_auto_release_work(struct work_struct *work)
 		wake_up(&mdp->callback_wq);
 	}
 
-	mdp_cmdq_pkt_destroy(&cmd->pkt);
+	cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
 	kfree(cmd->comps);
 	cmd->comps = NULL;
 	kfree(cmd);
@@ -578,7 +541,7 @@ static void mdp_handle_cmdq_callback(struct mbox_client *cl, void *mssg)
 		if (refcount_dec_and_test(&mdp->job_count))
 			wake_up(&mdp->callback_wq);
 
-		mdp_cmdq_pkt_destroy(&cmd->pkt);
+		cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
 		kfree(cmd->comps);
 		cmd->comps = NULL;
 		kfree(cmd);
@@ -620,7 +583,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
 		goto err_uninit;
 	}
 
-	ret = mdp_cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
+	ret = cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
 	if (ret)
 		goto err_free_cmd;
 
@@ -700,6 +663,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
 	cmd->comps = comps;
 	cmd->num_comps = num_comp;
 	cmd->mdp_ctx = param->mdp_ctx;
+	cmd->pp_idx = pp_idx;
 
 	kfree(path);
 	return cmd;
@@ -711,7 +675,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
 err_free_comps:
 	kfree(comps);
 err_destroy_pkt:
-	mdp_cmdq_pkt_destroy(&cmd->pkt);
+	cmdq_pkt_destroy(mdp->cmdq_clt[pp_idx], &cmd->pkt);
 err_free_cmd:
 	kfree(cmd);
 err_uninit:
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
index 53a30ad7e0b0..935ae9825728 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
@@ -35,6 +35,7 @@ struct mdp_cmdq_cmd {
 	struct mdp_comp *comps;
 	void *mdp_ctx;
 	u8 num_comps;
+	u8 pp_idx;
 };
 
 struct mdp_dev;
-- 
2.34.1

[PATCH v4 3/3] soc: mediatek: cmdq: Remove cmdq_pkt_finalize() helper function

[Chun-Kuang Hu]

In order to have fine-grained control, use cmdq_pkt_eoc() and
cmdq_pkt_jump_rel() to replace cmdq_pkt_finalize().

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 drivers/soc/mediatek/mtk-cmdq-helper.c | 22 ----------------------
 include/linux/soc/mediatek/mtk-cmdq.h  | 13 -------------
 2 files changed, 35 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index a8fccedba83f..2a47dda4dd4a 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -538,27 +538,5 @@ int cmdq_pkt_eoc(struct cmdq_pkt *pkt)
 }
 EXPORT_SYMBOL(cmdq_pkt_eoc);
 
-int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
-{
-	struct cmdq_instruction inst = { {0} };
-	int err;
-
-	/* insert EOC and generate IRQ for each command iteration */
-	inst.op = CMDQ_CODE_EOC;
-	inst.value = CMDQ_EOC_IRQ_EN;
-	err = cmdq_pkt_append_command(pkt, inst);
-	if (err < 0)
-		return err;
-
-	/* JUMP to end */
-	inst.op = CMDQ_CODE_JUMP;
-	inst.value = CMDQ_JUMP_PASS >>
-		cmdq_get_shift_pa(((struct cmdq_client *)pkt->cl)->chan);
-	err = cmdq_pkt_append_command(pkt, inst);
-
-	return err;
-}
-EXPORT_SYMBOL(cmdq_pkt_finalize);
-
 MODULE_DESCRIPTION("MediaTek Command Queue (CMDQ) driver");
 MODULE_LICENSE("GPL v2");
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 5bee6f7fc400..0c3906e8ad19 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -391,14 +391,6 @@ int cmdq_pkt_jump_rel(struct cmdq_pkt *pkt, s32 offset, u8 shift_pa);
  */
 int cmdq_pkt_eoc(struct cmdq_pkt *pkt);
 
-/**
- * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
- * @pkt:	the CMDQ packet
- *
- * Return: 0 for success; else the error code is returned
- */
-int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
-
 #else /* IS_ENABLED(CONFIG_MTK_CMDQ) */
 
 static inline int cmdq_dev_get_client_reg(struct device *dev,
@@ -519,11 +511,6 @@ static inline int cmdq_pkt_eoc(struct cmdq_pkt *pkt)
 	return -EINVAL;
 }
 
-static inline int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
-{
-	return -EINVAL;
-}
-
 #endif /* IS_ENABLED(CONFIG_MTK_CMDQ) */
 
 #endif	/* __MTK_CMDQ_H__ */
-- 
2.34.1

Re: [PATCH v4 1/3] media: platform: mtk-mdp3: Get fine-grain control of cmdq_pkt_finalize()

[Matthias Brugger]

On 01/09/2024 16:32, Chun-Kuang Hu wrote:
> In order to have fine-grained control, use cmdq_pkt_eoc() and
> cmdq_pkt_jump_rel() to replace cmdq_pkt_finalize().
> 
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
>   drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c | 3 ++-
>   drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 2 ++
>   drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h | 1 +
>   3 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> index ea2ea119dd2a..ef5dade35fd3 100644
> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> @@ -676,7 +676,8 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
>   		dev_err(dev, "mdp_path_config error %d\n", pp_idx);
>   		goto err_free_path;
>   	}
> -	cmdq_pkt_finalize(&cmd->pkt);
> +	cmdq_pkt_eoc(&cmd->pkt);
> +	cmdq_pkt_jump_rel(&cmd->pkt, CMDQ_INST_SIZE, mdp->cmdq_shift_pa[pp_idx]);
>   
>   	for (i = 0; i < num_comp; i++) {
>   		s32 inner_id = MDP_COMP_NONE;
> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
> index 37e7b985d52c..40623c1980bf 100644
> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
> @@ -312,6 +312,8 @@ static int mdp_probe(struct platform_device *pdev)
>   			ret = PTR_ERR(mdp->cmdq_clt[i]);
>   			goto err_mbox_destroy;
>   		}
> +
> +		mdp->cmdq_shift_pa[i] = cmdq_get_shift_pa(mdp->cmdq_clt[i]->chan);
>   	}
>   
>   	init_waitqueue_head(&mdp->callback_wq);
> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
> index 430251f63754..05cade1d098e 100644
> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
> @@ -126,6 +126,7 @@ struct mdp_dev {
>   	u32					id_count;
>   	struct ida				mdp_ida;
>   	struct cmdq_client			*cmdq_clt[MDP_PP_MAX];
> +	u8					cmdq_shift_pa[MDP_PP_MAX];
>   	wait_queue_head_t			callback_wq;
>   
>   	struct v4l2_device			v4l2_dev;

Re: [PATCH v4 2/3] media: platform: mtk-mdp3: Use cmdq_pkt_create() and cmdq_pkt_destroy()

[Matthias Brugger]

On 01/09/2024 16:32, Chun-Kuang Hu wrote:
> Use cmdq_pkt_create() and cmdq_pkt_destroy() common function
> instead of implementing mdp3 version.
> 
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> ---
>   .../platform/mediatek/mdp3/mtk-mdp3-cmdq.c    | 46 ++-----------------
>   .../platform/mediatek/mdp3/mtk-mdp3-cmdq.h    |  1 +
>   2 files changed, 6 insertions(+), 41 deletions(-)
> 
> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> index ef5dade35fd3..740a484c8eb4 100644
> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> @@ -471,43 +471,6 @@ static int mdp_path_config(struct mdp_dev *mdp, struct mdp_cmdq_cmd *cmd,
>   	return 0;
>   }
>   
> -static int mdp_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
> -			       size_t size)
> -{
> -	struct device *dev;
> -	dma_addr_t dma_addr;
> -
> -	pkt->va_base = kzalloc(size, GFP_KERNEL);
> -	if (!pkt->va_base)
> -		return -ENOMEM;
> -
> -	pkt->buf_size = size;
> -	pkt->cl = (void *)client;

cmdq_pkt_create does not set the callback. Why doesn't that break things?
Same holds for the crtc driver that is already in linux-next.

Regards,
Matthias

> -
> -	dev = client->chan->mbox->dev;
> -	dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
> -				  DMA_TO_DEVICE);
> -	if (dma_mapping_error(dev, dma_addr)) {
> -		dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
> -		kfree(pkt->va_base);
> -		return -ENOMEM;
> -	}
> -
> -	pkt->pa_base = dma_addr;
> -
> -	return 0;
> -}
> -
> -static void mdp_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
> -{
> -	struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
> -
> -	dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
> -			 DMA_TO_DEVICE);
> -	kfree(pkt->va_base);
> -	pkt->va_base = NULL;
> -}
> -
>   static void mdp_auto_release_work(struct work_struct *work)
>   {
>   	struct mdp_cmdq_cmd *cmd;
> @@ -538,7 +501,7 @@ static void mdp_auto_release_work(struct work_struct *work)
>   		wake_up(&mdp->callback_wq);
>   	}
>   
> -	mdp_cmdq_pkt_destroy(&cmd->pkt);
> +	cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
>   	kfree(cmd->comps);
>   	cmd->comps = NULL;
>   	kfree(cmd);
> @@ -578,7 +541,7 @@ static void mdp_handle_cmdq_callback(struct mbox_client *cl, void *mssg)
>   		if (refcount_dec_and_test(&mdp->job_count))
>   			wake_up(&mdp->callback_wq);
>   
> -		mdp_cmdq_pkt_destroy(&cmd->pkt);
> +		cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
>   		kfree(cmd->comps);
>   		cmd->comps = NULL;
>   		kfree(cmd);
> @@ -620,7 +583,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
>   		goto err_uninit;
>   	}
>   
> -	ret = mdp_cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
> +	ret = cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
>   	if (ret)
>   		goto err_free_cmd;
>   
> @@ -700,6 +663,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
>   	cmd->comps = comps;
>   	cmd->num_comps = num_comp;
>   	cmd->mdp_ctx = param->mdp_ctx;
> +	cmd->pp_idx = pp_idx;
>   
>   	kfree(path);
>   	return cmd;
> @@ -711,7 +675,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
>   err_free_comps:
>   	kfree(comps);
>   err_destroy_pkt:
> -	mdp_cmdq_pkt_destroy(&cmd->pkt);
> +	cmdq_pkt_destroy(mdp->cmdq_clt[pp_idx], &cmd->pkt);
>   err_free_cmd:
>   	kfree(cmd);
>   err_uninit:
> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
> index 53a30ad7e0b0..935ae9825728 100644
> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
> @@ -35,6 +35,7 @@ struct mdp_cmdq_cmd {
>   	struct mdp_comp *comps;
>   	void *mdp_ctx;
>   	u8 num_comps;
> +	u8 pp_idx;
>   };
>   
>   struct mdp_dev;

Re: [PATCH v4 3/3] soc: mediatek: cmdq: Remove cmdq_pkt_finalize() helper function

[Matthias Brugger]

On 01/09/2024 16:32, Chun-Kuang Hu wrote:
> In order to have fine-grained control, use cmdq_pkt_eoc() and
> cmdq_pkt_jump_rel() to replace cmdq_pkt_finalize().
> 
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Acked-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
>   drivers/soc/mediatek/mtk-cmdq-helper.c | 22 ----------------------
>   include/linux/soc/mediatek/mtk-cmdq.h  | 13 -------------
>   2 files changed, 35 deletions(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index a8fccedba83f..2a47dda4dd4a 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -538,27 +538,5 @@ int cmdq_pkt_eoc(struct cmdq_pkt *pkt)
>   }
>   EXPORT_SYMBOL(cmdq_pkt_eoc);
>   
> -int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
> -{
> -	struct cmdq_instruction inst = { {0} };
> -	int err;
> -
> -	/* insert EOC and generate IRQ for each command iteration */
> -	inst.op = CMDQ_CODE_EOC;
> -	inst.value = CMDQ_EOC_IRQ_EN;
> -	err = cmdq_pkt_append_command(pkt, inst);
> -	if (err < 0)
> -		return err;
> -
> -	/* JUMP to end */
> -	inst.op = CMDQ_CODE_JUMP;
> -	inst.value = CMDQ_JUMP_PASS >>
> -		cmdq_get_shift_pa(((struct cmdq_client *)pkt->cl)->chan);
> -	err = cmdq_pkt_append_command(pkt, inst);
> -
> -	return err;
> -}
> -EXPORT_SYMBOL(cmdq_pkt_finalize);
> -
>   MODULE_DESCRIPTION("MediaTek Command Queue (CMDQ) driver");
>   MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> index 5bee6f7fc400..0c3906e8ad19 100644
> --- a/include/linux/soc/mediatek/mtk-cmdq.h
> +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> @@ -391,14 +391,6 @@ int cmdq_pkt_jump_rel(struct cmdq_pkt *pkt, s32 offset, u8 shift_pa);
>    */
>   int cmdq_pkt_eoc(struct cmdq_pkt *pkt);
>   
> -/**
> - * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
> - * @pkt:	the CMDQ packet
> - *
> - * Return: 0 for success; else the error code is returned
> - */
> -int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
> -
>   #else /* IS_ENABLED(CONFIG_MTK_CMDQ) */
>   
>   static inline int cmdq_dev_get_client_reg(struct device *dev,
> @@ -519,11 +511,6 @@ static inline int cmdq_pkt_eoc(struct cmdq_pkt *pkt)
>   	return -EINVAL;
>   }
>   
> -static inline int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
> -{
> -	return -EINVAL;
> -}
> -
>   #endif /* IS_ENABLED(CONFIG_MTK_CMDQ) */
>   
>   #endif	/* __MTK_CMDQ_H__ */

Re: [PATCH v4 2/3] media: platform: mtk-mdp3: Use cmdq_pkt_create() and cmdq_pkt_destroy()

[CK Hu (胡俊光)]

Hi, Matthias:

On Mon, 2024-09-02 at 17:31 +0200, Matthias Brugger wrote:
>  	 
> External email : Please do not click links or open attachments until you have verified the sender or the content.
>  
> 
> On 01/09/2024 16:32, Chun-Kuang Hu wrote:
> > Use cmdq_pkt_create() and cmdq_pkt_destroy() common function
> > instead of implementing mdp3 version.
> > 
> > Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
> > ---
> >   .../platform/mediatek/mdp3/mtk-mdp3-cmdq.c    | 46 ++-----------------
> >   .../platform/mediatek/mdp3/mtk-mdp3-cmdq.h    |  1 +
> >   2 files changed, 6 insertions(+), 41 deletions(-)
> > 
> > diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> > index ef5dade35fd3..740a484c8eb4 100644
> > --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> > +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
> > @@ -471,43 +471,6 @@ static int mdp_path_config(struct mdp_dev *mdp, struct mdp_cmdq_cmd *cmd,
> >   return 0;
> >   }
> >   
> > -static int mdp_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
> > -       size_t size)
> > -{
> > -struct device *dev;
> > -dma_addr_t dma_addr;
> > -
> > -pkt->va_base = kzalloc(size, GFP_KERNEL);
> > -if (!pkt->va_base)
> > -return -ENOMEM;
> > -
> > -pkt->buf_size = size;
> > -pkt->cl = (void *)client;
> 
> cmdq_pkt_create does not set the callback. Why doesn't that break things?
> Same holds for the crtc driver that is already in linux-next.

This series is to remove pkt->cl.
For the helper function whick need pkt->cl, add parameter to pass the cmdq_client information.
Up to now, only cmdq_pkt_finalize() use pkt->cl, but it is replaced by cmdq_pkt_eoc() and cmdq_pkt_jump_rel() in [PATCH v4 1/3].
So this would not break any thing.

Regards,
CK

> 
> Regards,
> Matthias
> 
> > -
> > -dev = client->chan->mbox->dev;
> > -dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
> > -  DMA_TO_DEVICE);
> > -if (dma_mapping_error(dev, dma_addr)) {
> > -dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
> > -kfree(pkt->va_base);
> > -return -ENOMEM;
> > -}
> > -
> > -pkt->pa_base = dma_addr;
> > -
> > -return 0;
> > -}
> > -
> > -static void mdp_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
> > -{
> > -struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
> > -
> > -dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
> > - DMA_TO_DEVICE);
> > -kfree(pkt->va_base);
> > -pkt->va_base = NULL;
> > -}
> > -
> >   static void mdp_auto_release_work(struct work_struct *work)
> >   {
> >   struct mdp_cmdq_cmd *cmd;
> > @@ -538,7 +501,7 @@ static void mdp_auto_release_work(struct work_struct *work)
> >   wake_up(&mdp->callback_wq);
> >   }
> >   
> > -mdp_cmdq_pkt_destroy(&cmd->pkt);
> > +cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
> >   kfree(cmd->comps);
> >   cmd->comps = NULL;
> >   kfree(cmd);
> > @@ -578,7 +541,7 @@ static void mdp_handle_cmdq_callback(struct mbox_client *cl, void *mssg)
> >   if (refcount_dec_and_test(&mdp->job_count))
> >   wake_up(&mdp->callback_wq);
> >   
> > -mdp_cmdq_pkt_destroy(&cmd->pkt);
> > +cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
> >   kfree(cmd->comps);
> >   cmd->comps = NULL;
> >   kfree(cmd);
> > @@ -620,7 +583,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
> >   goto err_uninit;
> >   }
> >   
> > -ret = mdp_cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
> > +ret = cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
> >   if (ret)
> >   goto err_free_cmd;
> >   
> > @@ -700,6 +663,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
> >   cmd->comps = comps;
> >   cmd->num_comps = num_comp;
> >   cmd->mdp_ctx = param->mdp_ctx;
> > +cmd->pp_idx = pp_idx;
> >   
> >   kfree(path);
> >   return cmd;
> > @@ -711,7 +675,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
> >   err_free_comps:
> >   kfree(comps);
> >   err_destroy_pkt:
> > -mdp_cmdq_pkt_destroy(&cmd->pkt);
> > +cmdq_pkt_destroy(mdp->cmdq_clt[pp_idx], &cmd->pkt);
> >   err_free_cmd:
> >   kfree(cmd);
> >   err_uninit:
> > diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
> > index 53a30ad7e0b0..935ae9825728 100644
> > --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
> > +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
> > @@ -35,6 +35,7 @@ struct mdp_cmdq_cmd {
> >   struct mdp_comp *comps;
> >   void *mdp_ctx;
> >   u8 num_comps;
> > +u8 pp_idx;
> >   };
> >   
> >   struct mdp_dev;

Re: [PATCH v4 2/3] media: platform: mtk-mdp3: Use cmdq_pkt_create() and cmdq_pkt_destroy()

[Matthias Brugger]

On 03/09/2024 11:39, CK Hu (胡俊光) wrote:
> Hi, Matthias:
> 
> On Mon, 2024-09-02 at 17:31 +0200, Matthias Brugger wrote:
>>   	
>> External email : Please do not click links or open attachments until you have verified the sender or the content.
>>   
>>
>> On 01/09/2024 16:32, Chun-Kuang Hu wrote:
>>> Use cmdq_pkt_create() and cmdq_pkt_destroy() common function
>>> instead of implementing mdp3 version.
>>>
>>> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
>>> ---
>>>    .../platform/mediatek/mdp3/mtk-mdp3-cmdq.c    | 46 ++-----------------
>>>    .../platform/mediatek/mdp3/mtk-mdp3-cmdq.h    |  1 +
>>>    2 files changed, 6 insertions(+), 41 deletions(-)
>>>
>>> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
>>> index ef5dade35fd3..740a484c8eb4 100644
>>> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
>>> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
>>> @@ -471,43 +471,6 @@ static int mdp_path_config(struct mdp_dev *mdp, struct mdp_cmdq_cmd *cmd,
>>>    return 0;
>>>    }
>>>    
>>> -static int mdp_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
>>> -       size_t size)
>>> -{
>>> -struct device *dev;
>>> -dma_addr_t dma_addr;
>>> -
>>> -pkt->va_base = kzalloc(size, GFP_KERNEL);
>>> -if (!pkt->va_base)
>>> -return -ENOMEM;
>>> -
>>> -pkt->buf_size = size;
>>> -pkt->cl = (void *)client;
>>
>> cmdq_pkt_create does not set the callback. Why doesn't that break things?
>> Same holds for the crtc driver that is already in linux-next.
> 
> This series is to remove pkt->cl.
> For the helper function whick need pkt->cl, add parameter to pass the cmdq_client information.
> Up to now, only cmdq_pkt_finalize() use pkt->cl, but it is replaced by cmdq_pkt_eoc() and cmdq_pkt_jump_rel() in [PATCH v4 1/3].
> So this would not break any thing.
> 

Right, actually this is explained in the cover letter. Sorry for the noise.

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> Regards,
> CK
> 
>>
>> Regards,
>> Matthias
>>
>>> -
>>> -dev = client->chan->mbox->dev;
>>> -dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
>>> -  DMA_TO_DEVICE);
>>> -if (dma_mapping_error(dev, dma_addr)) {
>>> -dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
>>> -kfree(pkt->va_base);
>>> -return -ENOMEM;
>>> -}
>>> -
>>> -pkt->pa_base = dma_addr;
>>> -
>>> -return 0;
>>> -}
>>> -
>>> -static void mdp_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
>>> -{
>>> -struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
>>> -
>>> -dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
>>> - DMA_TO_DEVICE);
>>> -kfree(pkt->va_base);
>>> -pkt->va_base = NULL;
>>> -}
>>> -
>>>    static void mdp_auto_release_work(struct work_struct *work)
>>>    {
>>>    struct mdp_cmdq_cmd *cmd;
>>> @@ -538,7 +501,7 @@ static void mdp_auto_release_work(struct work_struct *work)
>>>    wake_up(&mdp->callback_wq);
>>>    }
>>>    
>>> -mdp_cmdq_pkt_destroy(&cmd->pkt);
>>> +cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
>>>    kfree(cmd->comps);
>>>    cmd->comps = NULL;
>>>    kfree(cmd);
>>> @@ -578,7 +541,7 @@ static void mdp_handle_cmdq_callback(struct mbox_client *cl, void *mssg)
>>>    if (refcount_dec_and_test(&mdp->job_count))
>>>    wake_up(&mdp->callback_wq);
>>>    
>>> -mdp_cmdq_pkt_destroy(&cmd->pkt);
>>> +cmdq_pkt_destroy(mdp->cmdq_clt[cmd->pp_idx], &cmd->pkt);
>>>    kfree(cmd->comps);
>>>    cmd->comps = NULL;
>>>    kfree(cmd);
>>> @@ -620,7 +583,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
>>>    goto err_uninit;
>>>    }
>>>    
>>> -ret = mdp_cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
>>> +ret = cmdq_pkt_create(mdp->cmdq_clt[pp_idx], &cmd->pkt, SZ_16K);
>>>    if (ret)
>>>    goto err_free_cmd;
>>>    
>>> @@ -700,6 +663,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
>>>    cmd->comps = comps;
>>>    cmd->num_comps = num_comp;
>>>    cmd->mdp_ctx = param->mdp_ctx;
>>> +cmd->pp_idx = pp_idx;
>>>    
>>>    kfree(path);
>>>    return cmd;
>>> @@ -711,7 +675,7 @@ static struct mdp_cmdq_cmd *mdp_cmdq_prepare(struct mdp_dev *mdp,
>>>    err_free_comps:
>>>    kfree(comps);
>>>    err_destroy_pkt:
>>> -mdp_cmdq_pkt_destroy(&cmd->pkt);
>>> +cmdq_pkt_destroy(mdp->cmdq_clt[pp_idx], &cmd->pkt);
>>>    err_free_cmd:
>>>    kfree(cmd);
>>>    err_uninit:
>>> diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
>>> index 53a30ad7e0b0..935ae9825728 100644
>>> --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
>>> +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.h
>>> @@ -35,6 +35,7 @@ struct mdp_cmdq_cmd {
>>>    struct mdp_comp *comps;
>>>    void *mdp_ctx;
>>>    u8 num_comps;
>>> +u8 pp_idx;
>>>    };
>>>    
>>>    struct mdp_dev;

Re: [PATCH v4 2/3] media: platform: mtk-mdp3: Use cmdq_pkt_create() and cmdq_pkt_destroy()

[AngeloGioacchino Del Regno]

Il 01/09/24 16:32, Chun-Kuang Hu ha scritto:
> Use cmdq_pkt_create() and cmdq_pkt_destroy() common function
> instead of implementing mdp3 version.
> 
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Re: [PATCH v4 1/3] media: platform: mtk-mdp3: Get fine-grain control of cmdq_pkt_finalize()

[AngeloGioacchino Del Regno]

Il 01/09/24 16:32, Chun-Kuang Hu ha scritto:
> In order to have fine-grained control, use cmdq_pkt_eoc() and
> cmdq_pkt_jump_rel() to replace cmdq_pkt_finalize().
> 
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

Re: [PATCH v4 3/3] soc: mediatek: cmdq: Remove cmdq_pkt_finalize() helper function

[AngeloGioacchino Del Regno]

Il 01/09/24 16:32, Chun-Kuang Hu ha scritto:
> In order to have fine-grained control, use cmdq_pkt_eoc() and
> cmdq_pkt_jump_rel() to replace cmdq_pkt_finalize().
> 
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

I'll pick this one after the media patches will be mainlined to avoid issues.

In the meanwhile, mainly as a self-reminder:
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>