linux-kernel - Re: [PATCH 09/15] drm/msm/mdss: Add SM6125 support

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Message-ID: <9ba8e5c9-642d-a09d-7e82-adba8e5497aa@linaro.org>
Date:   Tue, 27 Jun 2023 11:49:07 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Marijn Suijten <marijn.suijten@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Krishna Manikandan <quic_mkrishn@...cinc.com>
Cc:     ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Martin Botka <martin.botka@...ainline.org>,
        Jami Kettunen <jami.kettunen@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-clk@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, Lux Aliaga <they@...t.lgbt>
Subject: Re: [PATCH 09/15] drm/msm/mdss: Add SM6125 support

On 24/06/2023 03:41, Marijn Suijten wrote:
> SM6125's UBWC hardware decoder is version 3.0, and supports decoding
> UBWC 1.0.

I think it's UBWC encoder version, see 
https://git.codelinaro.org/clo/la/platform/vendor/opensource/display-drivers/-/blob/display-kernel.lnx.5.15.1.r17-rel/msm/sde/sde_hw_top.c?ref_type=heads#L357

This is a part of 
https://patchwork.freedesktop.org/patch/538279/?series=118074&rev=1

(no, you don't have to rebase on that patchset, it is not reviewed yet).

> 
> Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>
> ---
>   drivers/gpu/drm/msm/msm_mdss.c | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
> index 05648c910c68..bf68bae23264 100644
> --- a/drivers/gpu/drm/msm/msm_mdss.c
> +++ b/drivers/gpu/drm/msm/msm_mdss.c
> @@ -559,6 +559,13 @@ static const struct msm_mdss_data sm6115_data = {
>   	.ubwc_static = 0x11f,
>   };
>   
> +static const struct msm_mdss_data sm6125_data = {
> +	.ubwc_version = UBWC_1_0,
> +	.ubwc_dec_version = UBWC_3_0,
> +	.ubwc_swizzle = 1,
> +	.highest_bank_bit = 1,
> +};
> +
>   static const struct msm_mdss_data sm8250_data = {
>   	.ubwc_version = UBWC_4_0,
>   	.ubwc_dec_version = UBWC_4_0,
> @@ -579,6 +586,7 @@ static const struct of_device_id mdss_dt_match[] = {
>   	{ .compatible = "qcom,sc8180x-mdss", .data = &sc8180x_data },
>   	{ .compatible = "qcom,sc8280xp-mdss", .data = &sc8280xp_data },
>   	{ .compatible = "qcom,sm6115-mdss", .data = &sm6115_data },
> +	{ .compatible = "qcom,sm6125-mdss", .data = &sm6125_data },
>   	{ .compatible = "qcom,sm6350-mdss", .data = &sm6350_data },
>   	{ .compatible = "qcom,sm6375-mdss", .data = &sm6350_data },
>   	{ .compatible = "qcom,sm8150-mdss", .data = &sm8150_data },
> 

-- 
With best wishes
Dmitry