linux-kernel - Re: [PATCH v2 2/3] drm/msm: Split out get

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Date:   Tue, 27 Jul 2021 23:11:53 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Rob Clark <robdclark@...il.com>, dri-devel@...ts.freedesktop.org
Cc:     Rob Clark <robdclark@...omium.org>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "open list:DRM DRIVER FOR MSM ADRENO GPU" 
        <linux-arm-msm@...r.kernel.org>,
        "open list:DRM DRIVER FOR MSM ADRENO GPU" 
        <freedreno@...ts.freedesktop.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/3] drm/msm: Split out get_freq() helper

On 26/07/2021 17:46, Rob Clark wrote:
> From: Rob Clark <robdclark@...omium.org>
> 
> In the next patch, it grows a bit more, so lets not duplicate the logic
> in multiple places.
> 
> Signed-off-by: Rob Clark <robdclark@...omium.org>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

> ---
>   drivers/gpu/drm/msm/msm_gpu_devfreq.c | 21 ++++++++++-----------
>   1 file changed, 10 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
> index 3bcea0baddab..2e24a97be624 100644
> --- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c
> +++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
> @@ -37,17 +37,21 @@ static int msm_devfreq_target(struct device *dev, unsigned long *freq,
>   	return 0;
>   }
>   
> +static unsigned long get_freq(struct msm_gpu *gpu)
> +{
> +	if (gpu->funcs->gpu_get_freq)
> +		return gpu->funcs->gpu_get_freq(gpu);
> +
> +	return clk_get_rate(gpu->core_clk);
> +}
> +
>   static int msm_devfreq_get_dev_status(struct device *dev,
>   		struct devfreq_dev_status *status)
>   {
>   	struct msm_gpu *gpu = dev_to_gpu(dev);
>   	ktime_t time;
>   
> -	if (gpu->funcs->gpu_get_freq)
> -		status->current_frequency = gpu->funcs->gpu_get_freq(gpu);
> -	else
> -		status->current_frequency = clk_get_rate(gpu->core_clk);
> -
> +	status->current_frequency = get_freq(gpu);
>   	status->busy_time = gpu->funcs->gpu_busy(gpu);
>   
>   	time = ktime_get();
> @@ -59,12 +63,7 @@ static int msm_devfreq_get_dev_status(struct device *dev,
>   
>   static int msm_devfreq_get_cur_freq(struct device *dev, unsigned long *freq)
>   {
> -	struct msm_gpu *gpu = dev_to_gpu(dev);
> -
> -	if (gpu->funcs->gpu_get_freq)
> -		*freq = gpu->funcs->gpu_get_freq(gpu);
> -	else
> -		*freq = clk_get_rate(gpu->core_clk);
> +	*freq = get_freq(dev_to_gpu(dev));
>   
>   	return 0;
>   }
> 


-- 
With best wishes
Dmitry