drm/mediatek: clear pending flag when cmdq packet is done.
diff mbox series

Message ID 20210422111004.1338867-1-hsinyi@chromium.org
State New, archived
Headers show
Series
  • drm/mediatek: clear pending flag when cmdq packet is done.
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Commit Message

Hsin-Yi Wang April 22, 2021, 11:10 a.m. UTC
From: CK Hu <ck.hu@mediatek.com>

In cmdq mode, packet may be flushed before it is executed, so
the pending flag should be cleared after cmdq packet is done.

Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c  | 56 +++++++++++++++++++++---
 include/linux/mailbox/mtk-cmdq-mailbox.h |  1 +
 2 files changed, 51 insertions(+), 6 deletions(-)

Comments

CK Hu April 23, 2021, 1:29 a.m. UTC | #1
Hi, Hsin-yi:

On Thu, 2021-04-22 at 19:10 +0800, Hsin-Yi Wang wrote:
> From: CK Hu <ck.hu@mediatek.com>
> 
> In cmdq mode, packet may be flushed before it is executed, so
> the pending flag should be cleared after cmdq packet is done.
> 
> Signed-off-by: CK Hu <ck.hu@mediatek.com>
> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_crtc.c  | 56 +++++++++++++++++++++---
>  include/linux/mailbox/mtk-cmdq-mailbox.h |  1 +
>  2 files changed, 51 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> index 40df2c823187..051bf0eb00d3 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> @@ -224,6 +224,45 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
>  #if IS_REACHABLE(CONFIG_MTK_CMDQ)
>  static void ddp_cmdq_cb(struct cmdq_cb_data data)
>  {
> +	struct cmdq_pkt *pkt = (struct cmdq_pkt *)data.data;
> +	struct mtk_drm_crtc *mtk_crtc = (struct mtk_drm_crtc *)pkt->crtc;
> +	struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
> +	unsigned int i;
> +
> +	if (data.sta == CMDQ_CB_ERROR)

I prefer use standard error status instead of proprietary one, so I send
a patch [1]. I would like this patch depend on [1].

[1]
https://patchwork.kernel.org/project/linux-mediatek/patch/20210314233323.23377-2-chunkuang.hu@kernel.org/

> +		goto destroy_pkt;
> +
> +	if (state->pending_config) {
> +		state->pending_config = false;
> +	}
> +
> +	if (mtk_crtc->pending_planes) {
> +		for (i = 0; i < mtk_crtc->layer_nr; i++) {
> +			struct drm_plane *plane = &mtk_crtc->planes[i];
> +			struct mtk_plane_state *plane_state;
> +
> +			plane_state = to_mtk_plane_state(plane->state);
> +
> +			if (plane_state->pending.config)
> +				plane_state->pending.config = false;
> +		}
> +		mtk_crtc->pending_planes = false;
> +	}
> +
> +	if (mtk_crtc->pending_async_planes) {
> +		for (i = 0; i < mtk_crtc->layer_nr; i++) {
> +			struct drm_plane *plane = &mtk_crtc->planes[i];
> +			struct mtk_plane_state *plane_state;
> +
> +			plane_state = to_mtk_plane_state(plane->state);
> +
> +			if (plane_state->pending.async_config)
> +				plane_state->pending.async_config = false;
> +		}
> +		mtk_crtc->pending_async_planes = false;
> +	}
> +
> +destroy_pkt:
>  	cmdq_pkt_destroy(data.data);
>  }
>  #endif
> @@ -377,8 +416,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
>  				    state->pending_height,
>  				    state->pending_vrefresh, 0,
>  				    cmdq_handle);
> -
> -		state->pending_config = false;
> +		if (!cmdq_handle)
> +			state->pending_config = false;
>  	}
>  
>  	if (mtk_crtc->pending_planes) {
> @@ -398,9 +437,11 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
>  				mtk_ddp_comp_layer_config(comp, local_layer,
>  							  plane_state,
>  							  cmdq_handle);
> -			plane_state->pending.config = false;
> +			if (!cmdq_handle)
> +				plane_state->pending.config = false;
>  		}
> -		mtk_crtc->pending_planes = false;
> +		if (!cmdq_handle)
> +			mtk_crtc->pending_planes = false;
>  	}
>  
>  	if (mtk_crtc->pending_async_planes) {
> @@ -420,9 +461,11 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
>  				mtk_ddp_comp_layer_config(comp, local_layer,
>  							  plane_state,
>  							  cmdq_handle);
> -			plane_state->pending.async_config = false;
> +			if (!cmdq_handle)
> +				plane_state->pending.async_config = false;
>  		}
> -		mtk_crtc->pending_async_planes = false;
> +		if (!cmdq_handle)
> +			mtk_crtc->pending_async_planes = false;
>  	}
>  }
>  
> @@ -475,6 +518,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
>  		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
>  		mtk_crtc_ddp_config(crtc, cmdq_handle);
>  		cmdq_pkt_finalize(cmdq_handle);
> +		cmdq_handle->crtc = mtk_crtc;
>  		cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
>  	}
>  #endif
> diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
> index d5a983d65f05..c06b14ec03e5 100644
> --- a/include/linux/mailbox/mtk-cmdq-mailbox.h
> +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
> @@ -90,6 +90,7 @@ struct cmdq_pkt {
>  	struct cmdq_task_cb	cb;
>  	struct cmdq_task_cb	async_cb;
>  	void			*cl;
> +	void			*crtc;

Not all client need crtc, so I would like to use another structure to
include cmdq_pkt and crtc and cast that structure to cmdq_pkt. I have a
plan to use mailbox rx_callback instead of cmdq_task_cb [2] (not
upstreamed yet), and it is an example that crtc include cmdq_pkt. To
upstream [2] would take a long time, you could choose to depend on [2]
or not.

[2]
https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/commit/?h=mediatek-cmdq&id=2c3289b1550ea1105a02750928df738753ddf8e1

Regards,
CK

>  };
>  
>  u8 cmdq_get_shift_pa(struct mbox_chan *chan);

Patch
diff mbox series

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 40df2c823187..051bf0eb00d3 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -224,6 +224,45 @@  struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
 static void ddp_cmdq_cb(struct cmdq_cb_data data)
 {
+	struct cmdq_pkt *pkt = (struct cmdq_pkt *)data.data;
+	struct mtk_drm_crtc *mtk_crtc = (struct mtk_drm_crtc *)pkt->crtc;
+	struct mtk_crtc_state *state = to_mtk_crtc_state(mtk_crtc->base.state);
+	unsigned int i;
+
+	if (data.sta == CMDQ_CB_ERROR)
+		goto destroy_pkt;
+
+	if (state->pending_config) {
+		state->pending_config = false;
+	}
+
+	if (mtk_crtc->pending_planes) {
+		for (i = 0; i < mtk_crtc->layer_nr; i++) {
+			struct drm_plane *plane = &mtk_crtc->planes[i];
+			struct mtk_plane_state *plane_state;
+
+			plane_state = to_mtk_plane_state(plane->state);
+
+			if (plane_state->pending.config)
+				plane_state->pending.config = false;
+		}
+		mtk_crtc->pending_planes = false;
+	}
+
+	if (mtk_crtc->pending_async_planes) {
+		for (i = 0; i < mtk_crtc->layer_nr; i++) {
+			struct drm_plane *plane = &mtk_crtc->planes[i];
+			struct mtk_plane_state *plane_state;
+
+			plane_state = to_mtk_plane_state(plane->state);
+
+			if (plane_state->pending.async_config)
+				plane_state->pending.async_config = false;
+		}
+		mtk_crtc->pending_async_planes = false;
+	}
+
+destroy_pkt:
 	cmdq_pkt_destroy(data.data);
 }
 #endif
@@ -377,8 +416,8 @@  static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 				    state->pending_height,
 				    state->pending_vrefresh, 0,
 				    cmdq_handle);
-
-		state->pending_config = false;
+		if (!cmdq_handle)
+			state->pending_config = false;
 	}
 
 	if (mtk_crtc->pending_planes) {
@@ -398,9 +437,11 @@  static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 				mtk_ddp_comp_layer_config(comp, local_layer,
 							  plane_state,
 							  cmdq_handle);
-			plane_state->pending.config = false;
+			if (!cmdq_handle)
+				plane_state->pending.config = false;
 		}
-		mtk_crtc->pending_planes = false;
+		if (!cmdq_handle)
+			mtk_crtc->pending_planes = false;
 	}
 
 	if (mtk_crtc->pending_async_planes) {
@@ -420,9 +461,11 @@  static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 				mtk_ddp_comp_layer_config(comp, local_layer,
 							  plane_state,
 							  cmdq_handle);
-			plane_state->pending.async_config = false;
+			if (!cmdq_handle)
+				plane_state->pending.async_config = false;
 		}
-		mtk_crtc->pending_async_planes = false;
+		if (!cmdq_handle)
+			mtk_crtc->pending_async_planes = false;
 	}
 }
 
@@ -475,6 +518,7 @@  static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
 		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
 		mtk_crtc_ddp_config(crtc, cmdq_handle);
 		cmdq_pkt_finalize(cmdq_handle);
+		cmdq_handle->crtc = mtk_crtc;
 		cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
 	}
 #endif
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
index d5a983d65f05..c06b14ec03e5 100644
--- a/include/linux/mailbox/mtk-cmdq-mailbox.h
+++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
@@ -90,6 +90,7 @@  struct cmdq_pkt {
 	struct cmdq_task_cb	cb;
 	struct cmdq_task_cb	async_cb;
 	void			*cl;
+	void			*crtc;
 };
 
 u8 cmdq_get_shift_pa(struct mbox_chan *chan);