linux-kernel - Re: [PATCH v3 16/19] media: venus: pm_helpers: Commonize getting clocks and GenPDs

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Message-ID: <782b1aaa-b091-0e79-0adc-a7b6ade5d53f@quicinc.com>
Date: Thu, 25 Apr 2024 18:16:48 +0530
From: Dikshita Agarwal <quic_dikshita@...cinc.com>
To: Konrad Dybcio <konrad.dybcio@...aro.org>,
        Stanimir Varbanov
	<stanimir.k.varbanov@...il.com>,
        Vikash Garodia <quic_vgarodia@...cinc.com>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Andy Gross
	<agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        "Mauro Carvalho
 Chehab" <mchehab@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC: Marijn Suijten <marijn.suijten@...ainline.org>,
        Stanimir Varbanov
	<stanimir.varbanov@...aro.org>,
        Mauro Carvalho Chehab
	<mchehab+huawei@...nel.org>,
        <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 16/19] media: venus: pm_helpers: Commonize getting
 clocks and GenPDs



On 3/27/2024 11:38 PM, Konrad Dybcio wrote:
> As has been the story with the past few commits, much of the resource
> acquisition logic is totally identical between different generations
> and there's no good reason to invent a new function for each one.
> 
> Commonize core_get() and rename it to venus_get_resources() to be more
> meaningful.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>  drivers/media/platform/qcom/venus/core.c       | 8 +++-----
>  drivers/media/platform/qcom/venus/pm_helpers.c | 5 +----
>  drivers/media/platform/qcom/venus/pm_helpers.h | 3 +--
>  3 files changed, 5 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
> index 1f4a86b1bd73..6914fa991efb 100644
> --- a/drivers/media/platform/qcom/venus/core.c
> +++ b/drivers/media/platform/qcom/venus/core.c
> @@ -334,11 +334,9 @@ static int venus_probe(struct platform_device *pdev)
>  			return PTR_ERR(core->resets[i]);
>  	}
>  
> -	if (core->pm_ops->core_get) {
> -		ret = core->pm_ops->core_get(core);
> -		if (ret)
> -			return ret;
> -	}
> +	ret = venus_get_resources(core);
> +	if (ret)
> +		return ret;
>  
>  	ret = dma_set_mask_and_coherent(dev, res->dma_mask);
>  	if (ret)
> diff --git a/drivers/media/platform/qcom/venus/pm_helpers.c b/drivers/media/platform/qcom/venus/pm_helpers.c
> index 583153bbb74e..ba5199d9e5c9 100644
> --- a/drivers/media/platform/qcom/venus/pm_helpers.c
> +++ b/drivers/media/platform/qcom/venus/pm_helpers.c
> @@ -326,7 +326,6 @@ static int load_scale_v1(struct venus_inst *inst)
>  }
>  
>  static const struct venus_pm_ops pm_ops_v1 = {
> -	.core_get = venus_clks_get,
>  	.load_scale = load_scale_v1,
>  };
>  
> @@ -395,7 +394,6 @@ static int venc_power_v3(struct device *dev, int on)
>  }
>  
>  static const struct venus_pm_ops pm_ops_v3 = {
> -	.core_get = venus_clks_get,
>  	.vdec_get = vdec_get_v3,
>  	.vdec_power = vdec_power_v3,
>  	.venc_get = venc_get_v3,
> @@ -920,7 +918,7 @@ static int core_resets_reset(struct venus_core *core)
>  	return ret;
>  }
>  
> -static int core_get_v4(struct venus_core *core)
> +int venus_get_resources(struct venus_core *core)
>  {
>  	struct device *dev = core->dev;
>  	const struct venus_resources *res = core->res;
> @@ -1109,7 +1107,6 @@ static int load_scale_v4(struct venus_inst *inst)

With this change vcodec_clks_get will be called for legacy targets as well
in venus probe itself, which is currently being called in vdec/venc_probe
for v1 and v3 targets.
This needs to be validated on legacy v1 and v3 devices.

Thanks,
Dikshita
>  }
>  
>  static const struct venus_pm_ops pm_ops_v4 = {
> -	.core_get = core_get_v4,
>  	.vdec_get = vdec_get_v4,
>  	.vdec_put = vdec_put_v4,
>  	.vdec_power = vdec_power_v4,
> diff --git a/drivers/media/platform/qcom/venus/pm_helpers.h b/drivers/media/platform/qcom/venus/pm_helpers.h
> index 3014b39aa6e3..7a55a55029f3 100644
> --- a/drivers/media/platform/qcom/venus/pm_helpers.h
> +++ b/drivers/media/platform/qcom/venus/pm_helpers.h
> @@ -10,8 +10,6 @@ struct venus_core;
>  #define POWER_OFF	0
>  
>  struct venus_pm_ops {
> -	int (*core_get)(struct venus_core *core);
> -
>  	int (*vdec_get)(struct device *dev);
>  	void (*vdec_put)(struct device *dev);
>  	int (*vdec_power)(struct device *dev, int on);
> @@ -28,6 +26,7 @@ struct venus_pm_ops {
>  const struct venus_pm_ops *venus_pm_get(enum hfi_version version);
>  int venus_core_power(struct venus_core *core, int on);
>  void vcodec_domains_put(struct venus_core *core);
> +int venus_get_resources(struct venus_core *core);
>  
>  static inline int venus_pm_load_scale(struct venus_inst *inst)
>  {
>