linux-kernel - Re: [PATCH 1/3] drm/msm/dpu: Fix SC7280 PP length

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Message-ID: <3b23270c-ec89-2177-8252-6ccaf58d37ac@quicinc.com>
Date:   Wed, 20 Sep 2023 16:41:39 -0700
From:   Abhinav Kumar <quic_abhinavk@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>
CC:     <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] drm/msm/dpu: Fix SC7280 PP length



On 9/20/2023 3:46 PM, Konrad Dybcio wrote:
> Commit 194347df5844 ("drm/msm/dpu: inline DSC_BLK and DSC_BLK_1_2
> macros") unrolled a macro incorrectly. Fix that.
> 

No, its correct from what i can tell.

Before inlining it was using PP_BLK_DITHER macro and not PP_BLK.

PP_BLK_DITHER has a len of 0 and not 0xd4.

Hence I cannot see whats wrong here.

> Fixes: 194347df5844 ("drm/msm/dpu: inline DSC_BLK and DSC_BLK_1_2 macros")
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h
> index 3b5061c4402a..dc3198335164 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h
> @@ -126,7 +126,7 @@ static const struct dpu_dspp_cfg sc7280_dspp[] = {
>   static const struct dpu_pingpong_cfg sc7280_pp[] = {
>   	{
>   		.name = "pingpong_0", .id = PINGPONG_0,
> -		.base = 0x69000, .len = 0,
> +		.base = 0x69000, .len = 0xd4,
>   		.features = BIT(DPU_PINGPONG_DITHER),
>   		.sblk = &sc7280_pp_sblk,
>   		.merge_3d = 0,
> @@ -134,7 +134,7 @@ static const struct dpu_pingpong_cfg sc7280_pp[] = {
>   		.intr_rdptr = -1,
>   	}, {
>   		.name = "pingpong_1", .id = PINGPONG_1,
> -		.base = 0x6a000, .len = 0,
> +		.base = 0x6a000, .len = 0xd4,
>   		.features = BIT(DPU_PINGPONG_DITHER),
>   		.sblk = &sc7280_pp_sblk,
>   		.merge_3d = 0,
> @@ -142,7 +142,7 @@ static const struct dpu_pingpong_cfg sc7280_pp[] = {
>   		.intr_rdptr = -1,
>   	}, {
>   		.name = "pingpong_2", .id = PINGPONG_2,
> -		.base = 0x6b000, .len = 0,
> +		.base = 0x6b000, .len = 0xd4,
>   		.features = BIT(DPU_PINGPONG_DITHER),
>   		.sblk = &sc7280_pp_sblk,
>   		.merge_3d = 0,
> @@ -150,7 +150,7 @@ static const struct dpu_pingpong_cfg sc7280_pp[] = {
>   		.intr_rdptr = -1,
>   	}, {
>   		.name = "pingpong_3", .id = PINGPONG_3,
> -		.base = 0x6c000, .len = 0,
> +		.base = 0x6c000, .len = 0xd4,
>   		.features = BIT(DPU_PINGPONG_DITHER),
>   		.sblk = &sc7280_pp_sblk,
>   		.merge_3d = 0,
>