linux-kernel - Re: [PATCH v1] drm/msm/dp: assign correct DP controller ID to interface table

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Date: Thu, 28 Mar 2024 22:39:04 +0200
From: Abel Vesa <abel.vesa@...aro.org>
To: Kuogee Hsieh <quic_khsieh@...cinc.com>
Cc: dri-devel@...ts.freedesktop.org, robdclark@...il.com, sean@...rly.run,
	swboyd@...omium.org, dianders@...omium.org, vkoul@...nel.org,
	daniel@...ll.ch, airlied@...il.com, agross@...nel.org,
	dmitry.baryshkov@...aro.org, andersson@...nel.org,
	quic_abhinavk@...cinc.com, quic_jesszhan@...cinc.com,
	quic_sbillaka@...cinc.com, marijn.suijten@...ainline.org,
	freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] drm/msm/dp: assign correct DP controller ID to
 interface table

On 24-03-28 13:04:05, Kuogee Hsieh wrote:
> At current x1e80100 interface table, interface #3 is wrongly
> connected to DP controller #0 and interface #4 wrongly connected
> to DP controller #2. Fix this problem by connect Interface #3 to
> DP controller #0 and interface #4 connect to DP controller #1.
> Also add interface #6, #7 and #8 connections to DP controller to
> complete x1e80100 interface table.
> 
> Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
> ---

Nitpick: Probably mention the x1e80100 in the subject line somehow.

Reviewed-by: Abel Vesa <abel.vesa@...aro.org>

>  .../drm/msm/disp/dpu1/catalog/dpu_9_2_x1e80100.h   | 34 ++++++++++++++++++++--
>  1 file changed, 31 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_2_x1e80100.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_2_x1e80100.h
> index 9a9f709..a3e60ac 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_2_x1e80100.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_9_2_x1e80100.h
> @@ -324,6 +324,7 @@ static const struct dpu_wb_cfg x1e80100_wb[] = {
>  	},
>  };
>  
> +/* TODO: INTF 3, 8 and 7 are used for MST, marked as INTF_NONE for now */
>  static const struct dpu_intf_cfg x1e80100_intf[] = {
>  	{
>  		.name = "intf_0", .id = INTF_0,
> @@ -358,8 +359,8 @@ static const struct dpu_intf_cfg x1e80100_intf[] = {
>  		.name = "intf_3", .id = INTF_3,
>  		.base = 0x37000, .len = 0x280,
>  		.features = INTF_SC7280_MASK,
> -		.type = INTF_DP,
> -		.controller_id = MSM_DP_CONTROLLER_1,
> +		.type = INTF_NONE,
> +		.controller_id = MSM_DP_CONTROLLER_0,	/* pair with intf_0 for DP MST */
>  		.prog_fetch_lines_worst_case = 24,
>  		.intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 30),
>  		.intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 31),
> @@ -368,7 +369,7 @@ static const struct dpu_intf_cfg x1e80100_intf[] = {
>  		.base = 0x38000, .len = 0x280,
>  		.features = INTF_SC7280_MASK,
>  		.type = INTF_DP,
> -		.controller_id = MSM_DP_CONTROLLER_2,
> +		.controller_id = MSM_DP_CONTROLLER_1,
>  		.prog_fetch_lines_worst_case = 24,
>  		.intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 20),
>  		.intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 21),
> @@ -381,6 +382,33 @@ static const struct dpu_intf_cfg x1e80100_intf[] = {
>  		.prog_fetch_lines_worst_case = 24,
>  		.intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 22),
>  		.intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 23),
> +	}, {
> +		.name = "intf_6", .id = INTF_6,
> +		.base = 0x3A000, .len = 0x280,
> +		.features = INTF_SC7280_MASK,
> +		.type = INTF_DP,
> +		.controller_id = MSM_DP_CONTROLLER_2,
> +		.prog_fetch_lines_worst_case = 24,
> +		.intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 17),
> +		.intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 16),
> +	}, {
> +		.name = "intf_7", .id = INTF_7,
> +		.base = 0x3b000, .len = 0x280,
> +		.features = INTF_SC7280_MASK,
> +		.type = INTF_NONE,
> +		.controller_id = MSM_DP_CONTROLLER_2,	/* pair with intf_6 for DP MST */
> +		.prog_fetch_lines_worst_case = 24,
> +		.intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 18),
> +		.intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 19),
> +	}, {
> +		.name = "intf_8", .id = INTF_8,
> +		.base = 0x3c000, .len = 0x280,
> +		.features = INTF_SC7280_MASK,
> +		.type = INTF_NONE,
> +		.controller_id = MSM_DP_CONTROLLER_1,	/* pair with intf_4 for DP MST */
> +		.prog_fetch_lines_worst_case = 24,
> +		.intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 12),
> +		.intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 13),
>  	},
>  };
>  
> -- 
> 2.7.4
>