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From:   Souptick Joarder <jrdr.linux@gmail.com>
Date:   Tue, 18 Sep 2018 11:32:22 +0530
Message-ID: <CAFqt6zbp+yFq-59o-J5dtB8Gfc3Ggd6Ff6tCy5vt0OTTSr41vQ@mail.gmail.com>
Subject: Re: [PATCH v4] gpu/drm/exynos: Convert drm_atomic_helper_suspend/resume()
To:     Inki Dae <inki.dae@samsung.com>, jy0922.shim@samsung.com,
        sw0312.kim@samsung.com, Kyungmin Park <kyungmin.park@samsung.com>,
        airlied@linux.ie, kgene@kernel.org, krzk@kernel.org,
        Ajit Linux <ajitn.linux@gmail.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>
Cc:     dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org,
        linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org
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Sender: linux-kernel-owner@vger.kernel.org
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Hi Inki,
On Tue, Sep 11, 2018 at 2:06 PM Souptick Joarder <jrdr.linux@gmail.com> wrote:
>
> On Thu, Aug 2, 2018 at 9:12 PM Souptick Joarder <jrdr.linux@gmail.com> wrote:
> >
> > convert drm_atomic_helper_suspend/resume() to use
> > drm_mode_config_helper_suspend/resume().
> >
> > exynos_drm_fbdev_suspend/resume can be removed
> > as drm_mode_config_helper_suspend/resume has
> > implement the same in generic way.
> >
> > Remove suspend_state from exynos_drm_private
> > struct as it is no more useful.
> >
> > Signed-off-by: Ajit Negi <ajitn.linux@gmail.com>
> > Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
> > Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
>
> Can we get this patch in queue for 4.20 ? Not yet available in linux-next.

Is this patch queued for 4.20 ?

> > ---
> > v2: Address Inki Dae's comment. Remove ret variable
> >     from both suspend/resume function.
> >
> > v3: Tested by Marek. Updated the change log.
> >
> > v4: removing the return as exynos_drm_resume()
> >     now returns void.
> >
> >  drivers/gpu/drm/exynos/exynos_drm_drv.c   | 26 ++------------------------
> >  drivers/gpu/drm/exynos/exynos_drm_drv.h   |  1 -
> >  drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 17 -----------------
> >  drivers/gpu/drm/exynos/exynos_drm_fbdev.h | 10 ----------
> >  4 files changed, 2 insertions(+), 52 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> > index b599f74..6f76baf 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> > @@ -149,37 +149,15 @@ static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
> >  static int exynos_drm_suspend(struct device *dev)
> >  {
> >         struct drm_device *drm_dev = dev_get_drvdata(dev);
> > -       struct exynos_drm_private *private;
> > -
> > -       if (!drm_dev)
> > -               return 0;
> > -
> > -       private = drm_dev->dev_private;
> > -
> > -       drm_kms_helper_poll_disable(drm_dev);
> > -       exynos_drm_fbdev_suspend(drm_dev);
> > -       private->suspend_state = drm_atomic_helper_suspend(drm_dev);
> > -       if (IS_ERR(private->suspend_state)) {
> > -               exynos_drm_fbdev_resume(drm_dev);
> > -               drm_kms_helper_poll_enable(drm_dev);
> > -               return PTR_ERR(private->suspend_state);
> > -       }
> >
> > -       return 0;
> > +       return  drm_mode_config_helper_suspend(drm_dev);
> >  }
> >
> >  static void exynos_drm_resume(struct device *dev)
> >  {
> >         struct drm_device *drm_dev = dev_get_drvdata(dev);
> > -       struct exynos_drm_private *private;
> > -
> > -       if (!drm_dev)
> > -               return;
> >
> > -       private = drm_dev->dev_private;
> > -       drm_atomic_helper_resume(drm_dev, private->suspend_state);
> > -       exynos_drm_fbdev_resume(drm_dev);
> > -       drm_kms_helper_poll_enable(drm_dev);
> > +       drm_mode_config_helper_resume(drm_dev);
> >  }
> >
> >  static const struct dev_pm_ops exynos_drm_pm_ops = {
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
> > index c737c4b..7349e7c 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
> > @@ -195,7 +195,6 @@ struct drm_exynos_file_private {
> >   */
> >  struct exynos_drm_private {
> >         struct drm_fb_helper *fb_helper;
> > -       struct drm_atomic_state *suspend_state;
> >
> >         struct device *g2d_dev;
> >         struct device *dma_dev;
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> > index 132dd52..918dd2c 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> > @@ -270,20 +270,3 @@ void exynos_drm_fbdev_fini(struct drm_device *dev)
> >         private->fb_helper = NULL;
> >  }
> >
> > -void exynos_drm_fbdev_suspend(struct drm_device *dev)
> > -{
> > -       struct exynos_drm_private *private = dev->dev_private;
> > -
> > -       console_lock();
> > -       drm_fb_helper_set_suspend(private->fb_helper, 1);
> > -       console_unlock();
> > -}
> > -
> > -void exynos_drm_fbdev_resume(struct drm_device *dev)
> > -{
> > -       struct exynos_drm_private *private = dev->dev_private;
> > -
> > -       console_lock();
> > -       drm_fb_helper_set_suspend(private->fb_helper, 0);
> > -       console_unlock();
> > -}
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
> > index b338472..6840b6a 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
> > @@ -19,8 +19,6 @@
> >
> >  int exynos_drm_fbdev_init(struct drm_device *dev);
> >  void exynos_drm_fbdev_fini(struct drm_device *dev);
> > -void exynos_drm_fbdev_suspend(struct drm_device *drm);
> > -void exynos_drm_fbdev_resume(struct drm_device *drm);
> >
> >  #else
> >
> > @@ -39,14 +37,6 @@ static inline void exynos_drm_fbdev_restore_mode(struct drm_device *dev)
> >
> >  #define exynos_drm_output_poll_changed (NULL)
> >
> > -static inline void exynos_drm_fbdev_suspend(struct drm_device *drm)
> > -{
> > -}
> > -
> > -static inline void exynos_drm_fbdev_resume(struct drm_device *drm)
> > -{
> > -}
> > -
> >  #endif
> >
> >  #endif
> > --
> > 1.9.1
> >