linux-kernel - Re: [PATCH 36/39] drm: renesas: shmobile: Use suspend/resume helpers

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Date:   Fri, 23 Jun 2023 20:14:24 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Magnus Damm <magnus.damm@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 36/39] drm: renesas: shmobile: Use suspend/resume helpers

Hi Geert,

Thank you for the patch.

On Thu, Jun 22, 2023 at 11:21:48AM +0200, Geert Uytterhoeven wrote:
> Replace the custom suspend/resume handling by calls into
> drm_mode_config_helper_{suspend,resume}().
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

> ---
>  drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c | 13 -------------
>  drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h |  2 --
>  drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c  | 13 +++----------
>  3 files changed, 3 insertions(+), 25 deletions(-)
> 
> diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
> index cf7152d64424e720..b11bb666de3bac46 100644
> --- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
> +++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
> @@ -339,19 +339,6 @@ static void shmob_drm_crtc_stop(struct shmob_drm_crtc *scrtc)
>  	scrtc->started = false;
>  }
>  
> -void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc)
> -{
> -	shmob_drm_crtc_stop(scrtc);
> -}
> -
> -void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc)
> -{
> -	if (scrtc->dpms != DRM_MODE_DPMS_ON)
> -		return;
> -
> -	shmob_drm_crtc_start(scrtc);
> -}
> -
>  static inline struct shmob_drm_crtc *to_shmob_crtc(struct drm_crtc *crtc)
>  {
>  	return container_of(crtc, struct shmob_drm_crtc, base);
> diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h
> index fe41e42d6cc55275..37380c815f1f5a08 100644
> --- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h
> +++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h
> @@ -40,8 +40,6 @@ struct shmob_drm_connector {
>  
>  int shmob_drm_crtc_create(struct shmob_drm_device *sdev);
>  void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc);
> -void shmob_drm_crtc_suspend(struct shmob_drm_crtc *scrtc);
> -void shmob_drm_crtc_resume(struct shmob_drm_crtc *scrtc);
>  
>  int shmob_drm_encoder_create(struct shmob_drm_device *sdev);
>  int shmob_drm_connector_create(struct shmob_drm_device *sdev,
> diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
> index 9107f84224602683..c43f408d6b1fcc5b 100644
> --- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
> +++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
> @@ -20,6 +20,7 @@
>  #include <drm/drm_drv.h>
>  #include <drm/drm_fbdev_generic.h>
>  #include <drm/drm_gem_dma_helper.h>
> +#include <drm/drm_modeset_helper.h>
>  #include <drm/drm_module.h>
>  #include <drm/drm_probe_helper.h>
>  #include <drm/drm_vblank.h>
> @@ -115,22 +116,14 @@ static int shmob_drm_pm_suspend(struct device *dev)
>  {
>  	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
>  
> -	drm_kms_helper_poll_disable(&sdev->ddev);
> -	shmob_drm_crtc_suspend(&sdev->crtc);
> -
> -	return 0;
> +	return drm_mode_config_helper_suspend(&sdev->ddev);
>  }
>  
>  static int shmob_drm_pm_resume(struct device *dev)
>  {
>  	struct shmob_drm_device *sdev = dev_get_drvdata(dev);
>  
> -	drm_modeset_lock_all(&sdev->ddev);
> -	shmob_drm_crtc_resume(&sdev->crtc);
> -	drm_modeset_unlock_all(&sdev->ddev);
> -
> -	drm_kms_helper_poll_enable(&sdev->ddev);
> -	return 0;
> +	return drm_mode_config_helper_resume(&sdev->ddev);
>  }
>  
>  static DEFINE_SIMPLE_DEV_PM_OPS(shmob_drm_pm_ops,

-- 
Regards,

Laurent Pinchart