linux-kernel - Re: [PATCH] media: venus: pm_helpers: Unify v3 and v4 venc/vdec

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Date:   Fri, 11 Aug 2023 12:52:25 +0100
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: venus: pm_helpers: Unify v3 and v4 venc/vdec_get

On 11/08/2023 12:12, Konrad Dybcio wrote:
> They do the same thing, except v3 and earlier are expected to have the
> old style of bindings (i.e. core clock per core under video-enc/decoder
> subnode).
> 
> Unify them to stop duplicating needlessly.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>   drivers/media/platform/qcom/venus/pm_helpers.c | 34 ++++++++------------------
>   1 file changed, 10 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/pm_helpers.c b/drivers/media/platform/qcom/venus/pm_helpers.c
> index 48c9084bb4db..83d1e68bb9ca 100644
> --- a/drivers/media/platform/qcom/venus/pm_helpers.c
> +++ b/drivers/media/platform/qcom/venus/pm_helpers.c
> @@ -295,6 +295,8 @@ static int core_get_v1(struct venus_core *core)
>   {
>   	int ret;
>   
> +	legacy_binding = true;
> +
>   	ret = core_clks_get(core);
>   	if (ret)
>   		return ret;
> @@ -349,6 +351,9 @@ static int vdec_get_v3(struct device *dev)
>   {
>   	struct venus_core *core = dev_get_drvdata(dev);
>   
> +	if (!legacy_binding)
> +		return 0;
> +
>   	return vcodec_clks_get(core, dev, core->vcodec0_clks,
>   			       core->res->vcodec0_clks);
>   }
> @@ -374,6 +379,9 @@ static int venc_get_v3(struct device *dev)
>   {
>   	struct venus_core *core = dev_get_drvdata(dev);
>   
> +	if (!legacy_binding)
> +		return 0;
> +
>   	return vcodec_clks_get(core, dev, core->vcodec1_clks,
>   			       core->res->vcodec1_clks);
>   }
> @@ -764,17 +772,6 @@ static int coreid_power_v4(struct venus_inst *inst, int on)
>   	return ret;
>   }
>   
> -static int vdec_get_v4(struct device *dev)
> -{
> -	struct venus_core *core = dev_get_drvdata(dev);
> -
> -	if (!legacy_binding)
> -		return 0;
> -
> -	return vcodec_clks_get(core, dev, core->vcodec0_clks,
> -			       core->res->vcodec0_clks);
> -}
> -
>   static void vdec_put_v4(struct device *dev)
>   {
>   	struct venus_core *core = dev_get_drvdata(dev);
> @@ -809,17 +806,6 @@ static int vdec_power_v4(struct device *dev, int on)
>   	return ret;
>   }
>   
> -static int venc_get_v4(struct device *dev)
> -{
> -	struct venus_core *core = dev_get_drvdata(dev);
> -
> -	if (!legacy_binding)
> -		return 0;
> -
> -	return vcodec_clks_get(core, dev, core->vcodec1_clks,
> -			       core->res->vcodec1_clks);
> -}
> -
>   static void venc_put_v4(struct device *dev)
>   {
>   	struct venus_core *core = dev_get_drvdata(dev);
> @@ -1180,10 +1166,10 @@ static const struct venus_pm_ops pm_ops_v4 = {
>   	.core_get = core_get_v4,
>   	.core_put = core_put_v4,
>   	.core_power = core_power_v4,
> -	.vdec_get = vdec_get_v4,
> +	.vdec_get = vdec_get_v3,
>   	.vdec_put = vdec_put_v4,
>   	.vdec_power = vdec_power_v4,
> -	.venc_get = venc_get_v4,
> +	.venc_get = venc_get_v3,
>   	.venc_put = venc_put_v4,
>   	.venc_power = venc_power_v4,
>   	.coreid_power = coreid_power_v4,
> 
> ---
> base-commit: 21ef7b1e17d039053edaeaf41142423810572741
> change-id: 20230811-topic-venus_dedup-08f183d3a611
> 
> Best regards,

This makes sense.

It'd be nice to get rid of the top-level static bool and bury it in the 
core venus structure but, that's not a problem with your patch.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>