[PATCH 0/3] Add mt8188 compatiable for DSI cmd packet control

[PATCH 0/3] Add mt8188 compatiable for DSI cmd packet control

[xinlei.lee]

From: Xinlei Lee <xinlei.lee@mediatek.com>

Add dt-binding documentation of DSI for MediaTek MT8188 SoC.
Because of the difference between SOC and DSI cmd packet control, for
MT8188, it is necessary to increase the DSI_CMDQ_SIZE control when
sending long packets to initialize the panel. Of course, this will not
affect the sending of short packets.

Base on the branch of linus/master v6.3.

Xinlei Lee (3):
  dt-bindings: display: mediatek: dsi: Add compatible for MediaTek
    MT8188
  drm/mediatek: Add mt8188 dsi compatible to mtk_dsi.c
  drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code

 .../display/mediatek/mediatek,dsi.yaml        |  1 +
 drivers/gpu/drm/mediatek/mtk_drm_drv.c        |  2 ++
 drivers/gpu/drm/mediatek/mtk_dsi.c            | 20 +++++++++++++++++++
 3 files changed, 23 insertions(+)

-- 
2.18.0

[PATCH 1/3] dt-bindings: display: mediatek: dsi: Add compatible for MediaTek MT8188

[xinlei.lee]

From: Xinlei Lee <xinlei.lee@mediatek.com>

Add dt-binding documentation of dsi for MediaTek MT8188 SoC.

Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
---
 .../devicetree/bindings/display/mediatek/mediatek,dsi.yaml       | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
index 4707b60238b0..13fa76299254 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
@@ -29,6 +29,7 @@ properties:
       - mediatek,mt8173-dsi
       - mediatek,mt8183-dsi
       - mediatek,mt8186-dsi
+      - mediatek,mt8188-dsi
 
   reg:
     maxItems: 1
-- 
2.18.0

Re: [PATCH 1/3] dt-bindings: display: mediatek: dsi: Add compatible for MediaTek MT8188

[Krzysztof Kozlowski]

On 13/04/2023 08:09, xinlei.lee@mediatek.com wrote:
> From: Xinlei Lee <xinlei.lee@mediatek.com>
> 
> Add dt-binding documentation of dsi for MediaTek MT8188 SoC.
> 
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

Re: [PATCH 1/3] dt-bindings: display: mediatek: dsi: Add compatible for MediaTek MT8188

[Matthias Brugger]

On 13/04/2023 08:09, xinlei.lee@mediatek.com wrote:
> From: Xinlei Lee <xinlei.lee@mediatek.com>
> 
> Add dt-binding documentation of dsi for MediaTek MT8188 SoC.
> 
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>

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

> ---
>   .../devicetree/bindings/display/mediatek/mediatek,dsi.yaml       | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> index 4707b60238b0..13fa76299254 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> @@ -29,6 +29,7 @@ properties:
>         - mediatek,mt8173-dsi
>         - mediatek,mt8183-dsi
>         - mediatek,mt8186-dsi
> +      - mediatek,mt8188-dsi
>   
>     reg:
>       maxItems: 1

Re: [PATCH 1/3] dt-bindings: display: mediatek: dsi: Add compatible for MediaTek MT8188

[Chun-Kuang Hu]

<xinlei.lee@mediatek.com> 於 2023年4月13日 週四 下午2:09寫道：
>
> From: Xinlei Lee <xinlei.lee@mediatek.com>
>
> Add dt-binding documentation of dsi for MediaTek MT8188 SoC.

Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

>
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---
>  .../devicetree/bindings/display/mediatek/mediatek,dsi.yaml       | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> index 4707b60238b0..13fa76299254 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> @@ -29,6 +29,7 @@ properties:
>        - mediatek,mt8173-dsi
>        - mediatek,mt8183-dsi
>        - mediatek,mt8186-dsi
> +      - mediatek,mt8188-dsi
>
>    reg:
>      maxItems: 1
> --
> 2.18.0
>

[PATCH 2/3] drm/mediatek: Add mt8188 dsi compatible to mtk_dsi.c

[xinlei.lee]

From: Xinlei Lee <xinlei.lee@mediatek.com>

Add the compatible because there are different definitions for cmdq
register bit control in mt8188.

Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++
 drivers/gpu/drm/mediatek/mtk_dsi.c     | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index a13b36ac03a1..9ba05961479d 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -654,6 +654,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
 	  .data = (void *)MTK_DSI },
 	{ .compatible = "mediatek,mt8186-dsi",
 	  .data = (void *)MTK_DSI },
+	{ .compatible = "mediatek,mt8188-dsi",
+	  .data = (void *)MTK_DSI },
 	{ }
 };
 
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 7d5250351193..500a3054282d 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1208,6 +1208,12 @@ static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
 	.has_size_ctl = true,
 };
 
+static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
+	.reg_cmdq_off = 0xd00,
+	.has_shadow_ctl = true,
+	.has_size_ctl = true,
+};
+
 static const struct of_device_id mtk_dsi_of_match[] = {
 	{ .compatible = "mediatek,mt2701-dsi",
 	  .data = &mt2701_dsi_driver_data },
@@ -1217,6 +1223,8 @@ static const struct of_device_id mtk_dsi_of_match[] = {
 	  .data = &mt8183_dsi_driver_data },
 	{ .compatible = "mediatek,mt8186-dsi",
 	  .data = &mt8186_dsi_driver_data },
+	{ .compatible = "mediatek,mt8188-dsi",
+	  .data = &mt8188_dsi_driver_data },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, mtk_dsi_of_match);
-- 
2.18.0

Re: [PATCH 2/3] drm/mediatek: Add mt8188 dsi compatible to mtk_dsi.c

[Matthias Brugger]

On 13/04/2023 08:09, xinlei.lee@mediatek.com wrote:
> From: Xinlei Lee <xinlei.lee@mediatek.com>
> 
> Add the compatible because there are different definitions for cmdq
> register bit control in mt8188.
> 
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>

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

> ---
>   drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++
>   drivers/gpu/drm/mediatek/mtk_dsi.c     | 8 ++++++++
>   2 files changed, 10 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index a13b36ac03a1..9ba05961479d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -654,6 +654,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
>   	  .data = (void *)MTK_DSI },
>   	{ .compatible = "mediatek,mt8186-dsi",
>   	  .data = (void *)MTK_DSI },
> +	{ .compatible = "mediatek,mt8188-dsi",
> +	  .data = (void *)MTK_DSI },
>   	{ }
>   };
>   
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 7d5250351193..500a3054282d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -1208,6 +1208,12 @@ static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
>   	.has_size_ctl = true,
>   };
>   
> +static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
> +	.reg_cmdq_off = 0xd00,
> +	.has_shadow_ctl = true,
> +	.has_size_ctl = true,
> +};
> +
>   static const struct of_device_id mtk_dsi_of_match[] = {
>   	{ .compatible = "mediatek,mt2701-dsi",
>   	  .data = &mt2701_dsi_driver_data },
> @@ -1217,6 +1223,8 @@ static const struct of_device_id mtk_dsi_of_match[] = {
>   	  .data = &mt8183_dsi_driver_data },
>   	{ .compatible = "mediatek,mt8186-dsi",
>   	  .data = &mt8186_dsi_driver_data },
> +	{ .compatible = "mediatek,mt8188-dsi",
> +	  .data = &mt8188_dsi_driver_data },
>   	{ },
>   };
>   MODULE_DEVICE_TABLE(of, mtk_dsi_of_match);

Re: [PATCH 2/3] drm/mediatek: Add mt8188 dsi compatible to mtk_dsi.c

[Chun-Kuang Hu]

Hi, Xinlei:

Reorder this patch after patch "[3/3] drm/mediatek: dsi: Add dsi
cmdq_ctl to send panel initial code"

Regards,
Chun-Kuang.

<xinlei.lee@mediatek.com> 於 2023年4月13日 週四 下午2:09寫道：
>
> From: Xinlei Lee <xinlei.lee@mediatek.com>
>
> Add the compatible because there are different definitions for cmdq
> register bit control in mt8188.
>
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++
>  drivers/gpu/drm/mediatek/mtk_dsi.c     | 8 ++++++++
>  2 files changed, 10 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index a13b36ac03a1..9ba05961479d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -654,6 +654,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = {
>           .data = (void *)MTK_DSI },
>         { .compatible = "mediatek,mt8186-dsi",
>           .data = (void *)MTK_DSI },
> +       { .compatible = "mediatek,mt8188-dsi",
> +         .data = (void *)MTK_DSI },
>         { }
>  };
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 7d5250351193..500a3054282d 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -1208,6 +1208,12 @@ static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
>         .has_size_ctl = true,
>  };
>
> +static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
> +       .reg_cmdq_off = 0xd00,
> +       .has_shadow_ctl = true,
> +       .has_size_ctl = true,
> +};
> +
>  static const struct of_device_id mtk_dsi_of_match[] = {
>         { .compatible = "mediatek,mt2701-dsi",
>           .data = &mt2701_dsi_driver_data },
> @@ -1217,6 +1223,8 @@ static const struct of_device_id mtk_dsi_of_match[] = {
>           .data = &mt8183_dsi_driver_data },
>         { .compatible = "mediatek,mt8186-dsi",
>           .data = &mt8186_dsi_driver_data },
> +       { .compatible = "mediatek,mt8188-dsi",
> +         .data = &mt8188_dsi_driver_data },
>         { },
>  };
>  MODULE_DEVICE_TABLE(of, mtk_dsi_of_match);
> --
> 2.18.0
>

[PATCH 3/3] drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code

[xinlei.lee]

From: Xinlei Lee <xinlei.lee@mediatek.com>

For mt8188, add dsi cmdq reg control to send long packets to panel initialization.

Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_dsi.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 500a3054282d..cbfe5df4647c 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -86,6 +86,7 @@
 
 #define DSI_CMDQ_SIZE		0x60
 #define CMDQ_SIZE			0x3f
+#define CMDQ_SIZE_SEL			BIT(15)
 
 #define DSI_HSTX_CKL_WC		0x64
 
@@ -178,6 +179,7 @@ struct mtk_dsi_driver_data {
 	const u32 reg_cmdq_off;
 	bool has_shadow_ctl;
 	bool has_size_ctl;
+	bool cmdq_long_packet_ctl;
 };
 
 struct mtk_dsi {
@@ -965,6 +967,11 @@ static u32 mtk_dsi_recv_cnt(u8 type, u8 *read_data)
 	return 0;
 }
 
+static void mtk_dsi_cmd_packet_ctl(struct mtk_dsi *dsi)
+{
+	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
+}
+
 static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg)
 {
 	const char *tx_buf = msg->tx_buf;
@@ -996,6 +1003,8 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg)
 
 	mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
 	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
+	if (dsi->driver_data->cmdq_long_packet_ctl)
+		mtk_dsi_cmd_packet_ctl(dsi);
 }
 
 static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
@@ -1200,18 +1209,21 @@ static const struct mtk_dsi_driver_data mt8183_dsi_driver_data = {
 	.reg_cmdq_off = 0x200,
 	.has_shadow_ctl = true,
 	.has_size_ctl = true,
+	.cmdq_long_packet_ctl = false,
 };
 
 static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
 	.reg_cmdq_off = 0xd00,
 	.has_shadow_ctl = true,
 	.has_size_ctl = true,
+	.cmdq_long_packet_ctl = false,
 };
 
 static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
 	.reg_cmdq_off = 0xd00,
 	.has_shadow_ctl = true,
 	.has_size_ctl = true,
+	.cmdq_long_packet_ctl = true,
 };
 
 static const struct of_device_id mtk_dsi_of_match[] = {
-- 
2.18.0

Re: [PATCH 3/3] drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code

[Rex-BC Chen (陳柏辰)]

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Hello Xinlei,

IMO, [2/3] is weird because the driver_data for mt8186 and mt8188 are
the same in [2/3]. So I think [2/3] coulde be squashed into this patch.

BRs,
Bo-Chen

On Thu, 2023-04-13 at 14:09 +0800, xinlei.lee@mediatek.com wrote:
> From: Xinlei Lee <xinlei.lee@mediatek.com>
> 
> For mt8188, add dsi cmdq reg control to send long packets to panel
> initialization.
> 
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dsi.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c
> b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 500a3054282d..cbfe5df4647c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -86,6 +86,7 @@
>  
>  #define DSI_CMDQ_SIZE		0x60
>  #define CMDQ_SIZE			0x3f
> +#define CMDQ_SIZE_SEL			BIT(15)
>  
>  #define DSI_HSTX_CKL_WC		0x64
>  
> @@ -178,6 +179,7 @@ struct mtk_dsi_driver_data {
>  	const u32 reg_cmdq_off;
>  	bool has_shadow_ctl;
>  	bool has_size_ctl;
> +	bool cmdq_long_packet_ctl;
>  };
>  
>  struct mtk_dsi {
> @@ -965,6 +967,11 @@ static u32 mtk_dsi_recv_cnt(u8 type, u8
> *read_data)
>  	return 0;
>  }
>  
> +static void mtk_dsi_cmd_packet_ctl(struct mtk_dsi *dsi)
> +{
> +	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
> +}
> +
>  static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct
> mipi_dsi_msg *msg)
>  {
>  	const char *tx_buf = msg->tx_buf;
> @@ -996,6 +1003,8 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi,
> const struct mipi_dsi_msg *msg)
>  
>  	mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
>  	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
> +	if (dsi->driver_data->cmdq_long_packet_ctl)
> +		mtk_dsi_cmd_packet_ctl(dsi);
>  }
>  
>  static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
> @@ -1200,18 +1209,21 @@ static const struct mtk_dsi_driver_data
> mt8183_dsi_driver_data = {
>  	.reg_cmdq_off = 0x200,
>  	.has_shadow_ctl = true,
>  	.has_size_ctl = true,
> +	.cmdq_long_packet_ctl = false,
>  };
>  
>  static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
>  	.reg_cmdq_off = 0xd00,
>  	.has_shadow_ctl = true,
>  	.has_size_ctl = true,
> +	.cmdq_long_packet_ctl = false,
>  };
>  
>  static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
>  	.reg_cmdq_off = 0xd00,
>  	.has_shadow_ctl = true,
>  	.has_size_ctl = true,
> +	.cmdq_long_packet_ctl = true,
>  };
>  
>  static const struct of_device_id mtk_dsi_of_match[] = {

Re: [PATCH 3/3] drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code

[Shuijing Li (李水静)]

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Hi Rex-BC,

[2/3] is to add the driver data of 8188, [3/3] is the common content of
8183,8186 and 8188. So we think it should be divided into two patches.

BRs,
Shuijing

On Thu, 2023-04-13 at 07:27 +0000, Rex-BC Chen (陳柏辰) wrote:
> Hello Xinlei,
> 
> IMO, [2/3] is weird because the driver_data for mt8186 and mt8188 are
> the same in [2/3]. So I think [2/3] coulde be squashed into this
> patch.
> 
> BRs,
> Bo-Chen
> 
> On Thu, 2023-04-13 at 14:09 +0800, xinlei.lee@mediatek.com wrote:
> > From: Xinlei Lee <xinlei.lee@mediatek.com>
> > 
> > For mt8188, add dsi cmdq reg control to send long packets to panel
> > initialization.
> > 
> > Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> > Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_dsi.c | 12 ++++++++++++
> >  1 file changed, 12 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c
> > b/drivers/gpu/drm/mediatek/mtk_dsi.c
> > index 500a3054282d..cbfe5df4647c 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> > @@ -86,6 +86,7 @@
> >  
> >  #define DSI_CMDQ_SIZE		0x60
> >  #define CMDQ_SIZE			0x3f
> > +#define CMDQ_SIZE_SEL			BIT(15)
> >  
> >  #define DSI_HSTX_CKL_WC		0x64
> >  
> > @@ -178,6 +179,7 @@ struct mtk_dsi_driver_data {
> >  	const u32 reg_cmdq_off;
> >  	bool has_shadow_ctl;
> >  	bool has_size_ctl;
> > +	bool cmdq_long_packet_ctl;
> >  };
> >  
> >  struct mtk_dsi {
> > @@ -965,6 +967,11 @@ static u32 mtk_dsi_recv_cnt(u8 type, u8
> > *read_data)
> >  	return 0;
> >  }
> >  
> > +static void mtk_dsi_cmd_packet_ctl(struct mtk_dsi *dsi)
> > +{
> > +	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
> > +}
> > +
> >  static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct
> > mipi_dsi_msg *msg)
> >  {
> >  	const char *tx_buf = msg->tx_buf;
> > @@ -996,6 +1003,8 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi,
> > const struct mipi_dsi_msg *msg)
> >  
> >  	mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
> >  	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
> > +	if (dsi->driver_data->cmdq_long_packet_ctl)
> > +		mtk_dsi_cmd_packet_ctl(dsi);
> >  }
> >  
> >  static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
> > @@ -1200,18 +1209,21 @@ static const struct mtk_dsi_driver_data
> > mt8183_dsi_driver_data = {
> >  	.reg_cmdq_off = 0x200,
> >  	.has_shadow_ctl = true,
> >  	.has_size_ctl = true,
> > +	.cmdq_long_packet_ctl = false,
> >  };
> >  
> >  static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
> >  	.reg_cmdq_off = 0xd00,
> >  	.has_shadow_ctl = true,
> >  	.has_size_ctl = true,
> > +	.cmdq_long_packet_ctl = false,
> >  };
> >  
> >  static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
> >  	.reg_cmdq_off = 0xd00,
> >  	.has_shadow_ctl = true,
> >  	.has_size_ctl = true,
> > +	.cmdq_long_packet_ctl = true,
> >  };
> >  
> >  static const struct of_device_id mtk_dsi_of_match[] = {

Re: [PATCH 3/3] drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code

[Matthias Brugger]

On 13/04/2023 08:09, xinlei.lee@mediatek.com wrote:
> From: Xinlei Lee <xinlei.lee@mediatek.com>
> 
> For mt8188, add dsi cmdq reg control to send long packets to panel initialization.
> 
> Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---
>   drivers/gpu/drm/mediatek/mtk_dsi.c | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 500a3054282d..cbfe5df4647c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -86,6 +86,7 @@
>   
>   #define DSI_CMDQ_SIZE		0x60
>   #define CMDQ_SIZE			0x3f
> +#define CMDQ_SIZE_SEL			BIT(15)
>   
>   #define DSI_HSTX_CKL_WC		0x64
>   
> @@ -178,6 +179,7 @@ struct mtk_dsi_driver_data {
>   	const u32 reg_cmdq_off;
>   	bool has_shadow_ctl;
>   	bool has_size_ctl;
> +	bool cmdq_long_packet_ctl;
>   };
>   
>   struct mtk_dsi {
> @@ -965,6 +967,11 @@ static u32 mtk_dsi_recv_cnt(u8 type, u8 *read_data)
>   	return 0;
>   }
>   
> +static void mtk_dsi_cmd_packet_ctl(struct mtk_dsi *dsi)
> +{
> +	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
> +}
> +
>   static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg)
>   {
>   	const char *tx_buf = msg->tx_buf;
> @@ -996,6 +1003,8 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg)
>   
>   	mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
>   	mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
> +	if (dsi->driver_data->cmdq_long_packet_ctl)
> +		mtk_dsi_cmd_packet_ctl(dsi);

Why don't you put the onliner
mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
directly here. Please help me understand why adding another indirection is 
usefull here.

Best regards,
Matthias

>   }
>   
>   static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
> @@ -1200,18 +1209,21 @@ static const struct mtk_dsi_driver_data mt8183_dsi_driver_data = {
>   	.reg_cmdq_off = 0x200,
>   	.has_shadow_ctl = true,
>   	.has_size_ctl = true,
> +	.cmdq_long_packet_ctl = false,
>   };
>   
>   static const struct mtk_dsi_driver_data mt8186_dsi_driver_data = {
>   	.reg_cmdq_off = 0xd00,
>   	.has_shadow_ctl = true,
>   	.has_size_ctl = true,
> +	.cmdq_long_packet_ctl = false,
>   };
>   
>   static const struct mtk_dsi_driver_data mt8188_dsi_driver_data = {
>   	.reg_cmdq_off = 0xd00,
>   	.has_shadow_ctl = true,
>   	.has_size_ctl = true,
> +	.cmdq_long_packet_ctl = true,
>   };
>   
>   static const struct of_device_id mtk_dsi_of_match[] = {

Re: [PATCH 3/3] drm/mediatek: dsi: Add dsi cmdq_ctl to send panel initial code

[Shuijing Li (李水静)]

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[-- Attachment #2: Type: text/plain, Size: 3307 bytes --]

Hi Matthias,

I will update v2 version as your suggestion.

BRs,
Shuijing

On Thu, 2023-04-13 at 11:09 +0200, Matthias Brugger wrote:
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
> 
> 
> On 13/04/2023 08:09, xinlei.lee@mediatek.com wrote:
> > From: Xinlei Lee <xinlei.lee@mediatek.com>
> > 
> > For mt8188, add dsi cmdq reg control to send long packets to panel
> > initialization.
> > 
> > Signed-off-by: Xinlei Lee <xinlei.lee@mediatek.com>
> > Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> > ---
> >   drivers/gpu/drm/mediatek/mtk_dsi.c | 12 ++++++++++++
> >   1 file changed, 12 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c
> > b/drivers/gpu/drm/mediatek/mtk_dsi.c
> > index 500a3054282d..cbfe5df4647c 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> > @@ -86,6 +86,7 @@
> > 
> >   #define DSI_CMDQ_SIZE               0x60
> >   #define CMDQ_SIZE                   0x3f
> > +#define CMDQ_SIZE_SEL                        BIT(15)
> > 
> >   #define DSI_HSTX_CKL_WC             0x64
> > 
> > @@ -178,6 +179,7 @@ struct mtk_dsi_driver_data {
> >       const u32 reg_cmdq_off;
> >       bool has_shadow_ctl;
> >       bool has_size_ctl;
> > +     bool cmdq_long_packet_ctl;
> >   };
> > 
> >   struct mtk_dsi {
> > @@ -965,6 +967,11 @@ static u32 mtk_dsi_recv_cnt(u8 type, u8
> > *read_data)
> >       return 0;
> >   }
> > 
> > +static void mtk_dsi_cmd_packet_ctl(struct mtk_dsi *dsi)
> > +{
> > +     mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL,
> > CMDQ_SIZE_SEL);
> > +}
> > +
> >   static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct
> > mipi_dsi_msg *msg)
> >   {
> >       const char *tx_buf = msg->tx_buf;
> > @@ -996,6 +1003,8 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi,
> > const struct mipi_dsi_msg *msg)
> > 
> >       mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val);
> >       mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size);
> > +     if (dsi->driver_data->cmdq_long_packet_ctl)
> > +             mtk_dsi_cmd_packet_ctl(dsi);
> 
> Why don't you put the onliner
> mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE_SEL, CMDQ_SIZE_SEL);
> directly here. Please help me understand why adding another
> indirection is
> usefull here.
> 
> Best regards,
> Matthias
> 
> >   }
> > 
> >   static ssize_t mtk_dsi_host_send_cmd(struct mtk_dsi *dsi,
> > @@ -1200,18 +1209,21 @@ static const struct mtk_dsi_driver_data
> > mt8183_dsi_driver_data = {
> >       .reg_cmdq_off = 0x200,
> >       .has_shadow_ctl = true,
> >       .has_size_ctl = true,
> > +     .cmdq_long_packet_ctl = false,
> >   };
> > 
> >   static const struct mtk_dsi_driver_data mt8186_dsi_driver_data =
> > {
> >       .reg_cmdq_off = 0xd00,
> >       .has_shadow_ctl = true,
> >       .has_size_ctl = true,
> > +     .cmdq_long_packet_ctl = false,
> >   };
> > 
> >   static const struct mtk_dsi_driver_data mt8188_dsi_driver_data =
> > {
> >       .reg_cmdq_off = 0xd00,
> >       .has_shadow_ctl = true,
> >       .has_size_ctl = true,
> > +     .cmdq_long_packet_ctl = true,
> >   };
> > 
> >   static const struct of_device_id mtk_dsi_of_match[] = {