linux-kernel - Re: [PATCH v4 13/30] drm/msm/dpu: get rid of DPU_DATA_HCTL

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Message-ID: <3bc8e8dc-1e73-4a2e-b5d6-975768f64989@linaro.org>
Date: Tue, 20 May 2025 09:55:34 +0200
From: neil.armstrong@...aro.org
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
 Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>,
 Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Vinod Koul <vkoul@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH v4 13/30] drm/msm/dpu: get rid of DPU_DATA_HCTL_EN

On 19/05/2025 18:04, Dmitry Baryshkov wrote:
> From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> 
> Continue migration to the MDSS-revision based checks and replace
> DPU_DATA_HCTL_EN feature bit with the core_major_ver >= 5 check.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Reviewed-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 3 +--
>   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 3 ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c    | 2 +-
>   3 files changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> index 5cd87b13e839e7ad60356cde162405fdfb6f9498..1244dd59648d11123c507a1369f28f952d047fd5 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> @@ -106,8 +106,7 @@
>   
>   #define INTF_SC7180_MASK \
>   	(BIT(DPU_INTF_INPUT_CTRL) | \
> -	 BIT(DPU_INTF_STATUS_SUPPORTED) | \
> -	 BIT(DPU_DATA_HCTL_EN))
> +	 BIT(DPU_INTF_STATUS_SUPPORTED))
>   
>   #define WB_SDM845_MASK (BIT(DPU_WB_LINE_MODE) | \
>   			 BIT(DPU_WB_UBWC) | \
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> index 3b6133e1bb581741fe87b049ad0c89bf30b76019..bf6b2392efb47fa8c3e3c5d17f1a72341872e18b 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
> @@ -143,14 +143,11 @@ enum {
>    * INTF sub-blocks
>    * @DPU_INTF_INPUT_CTRL             Supports the setting of pp block from which
>    *                                  pixel data arrives to this INTF
> - * @DPU_DATA_HCTL_EN                Allows data to be transferred at different rate
> - *                                  than video timing
>    * @DPU_INTF_STATUS_SUPPORTED       INTF block has INTF_STATUS register
>    * @DPU_INTF_MAX
>    */
>   enum {
>   	DPU_INTF_INPUT_CTRL = 0x1,
> -	DPU_DATA_HCTL_EN,
>   	DPU_INTF_STATUS_SUPPORTED,
>   	DPU_INTF_MAX
>   };
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> index 1d56c21ac79095ab515aeb485346e1eb5793c260..8f9733aad2dec3a9b5464d55b00f350348842911 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> @@ -237,7 +237,7 @@ static void dpu_hw_intf_setup_timing_engine(struct dpu_hw_intf *intf,
>   	DPU_REG_WRITE(c, INTF_FRAME_LINE_COUNT_EN, 0x3);
>   	DPU_REG_WRITE(c, INTF_CONFIG, intf_cfg);
>   	DPU_REG_WRITE(c, INTF_PANEL_FORMAT, panel_format);
> -	if (intf->cap->features & BIT(DPU_DATA_HCTL_EN)) {
> +	if (intf->mdss_ver->core_major_ver >= 5) {
>   		/*
>   		 * DATA_HCTL_EN controls data timing which can be different from
>   		 * video timing. It is recommended to enable it for all cases, except
> 

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>