Re: [PATCH] drm/imx: Convert drm_atomic_helper_suspend/resume()

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Hi Souptick,

On Sat, 2018-07-28 at 18:35 +0530, Souptick Joarder wrote:
> convert drm_atomic_helper_suspend/resume() to use
> drm_mode_config_helper_suspend/resume().
> 
> Signed-off-by: Souptick Joarder <jrdr.linux@xxxxxxxxx>
> Signed-off-by: Ajit Negi <ajitn.linux@xxxxxxxxx>

Leonard pointed out earlier [1] that this makes the struct
imx_drm_device superfluous, since imxdrm->state is the only remaining
field and here you are removing its use. Could you remove struct
imx_drm_device as well?

[1] https://patchwork.kernel.org/patch/10531473/

regards
Philipp

> ---
>  drivers/gpu/drm/imx/imx-drm-core.c | 26 ++------------------------
>  1 file changed, 2 insertions(+), 24 deletions(-)
> 
> diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
> index 1d053bb..cdd83ea 100644
> --- a/drivers/gpu/drm/imx/imx-drm-core.c
> +++ b/drivers/gpu/drm/imx/imx-drm-core.c
> @@ -355,37 +355,15 @@ static int imx_drm_platform_remove(struct platform_device *pdev)
>  static int imx_drm_suspend(struct device *dev)
>  {
>  	struct drm_device *drm_dev = dev_get_drvdata(dev);
> -	struct imx_drm_device *imxdrm;
> -
> -	/* The drm_dev is NULL before .load hook is called */
> -	if (drm_dev == NULL)
> -		return 0;
> -
> -	drm_kms_helper_poll_disable(drm_dev);
> -
> -	imxdrm = drm_dev->dev_private;
> -	imxdrm->state = drm_atomic_helper_suspend(drm_dev);
> -	if (IS_ERR(imxdrm->state)) {
> -		drm_kms_helper_poll_enable(drm_dev);
> -		return PTR_ERR(imxdrm->state);
> -	}
>  
> -	return 0;
> +	return drm_mode_config_helper_suspend(drm_dev);
>  }
>  
>  static int imx_drm_resume(struct device *dev)
>  {
>  	struct drm_device *drm_dev = dev_get_drvdata(dev);
> -	struct imx_drm_device *imx_drm;
> -
> -	if (drm_dev == NULL)
> -		return 0;
>  
> -	imx_drm = drm_dev->dev_private;
> -	drm_atomic_helper_resume(drm_dev, imx_drm->state);
> -	drm_kms_helper_poll_enable(drm_dev);
> -
> -	return 0;
> +	return drm_mode_config_helper_resume(drm_dev);
>  }
>  #endif
>  
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