linux-kernel - Re: [PATCH v4] gpu/drm/exynos: Convert drm_atomic_helper

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Message-Id: <20180921031422epcas1p440984367cd375f84efd72b1eb8c8b9d7~WS8wTX1AN1223212232epcas1p4L@epcas1p4.samsung.com>
Date:   Fri, 21 Sep 2018 12:14:22 +0900
From:   Inki Dae <inki.dae@...sung.com>
To:     Souptick Joarder <jrdr.linux@...il.com>, jy0922.shim@...sung.com,
        sw0312.kim@...sung.com, Kyungmin Park <kyungmin.park@...sung.com>,
        airlied@...ux.ie, kgene@...nel.org, krzk@...nel.org,
        Ajit Linux <ajitn.linux@...il.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] gpu/drm/exynos: Convert
 drm_atomic_helper_suspend/resume()

Hi Joarder,

On 2018년 09월 18일 15:02, Souptick Joarder wrote:
> Hi Inki,
> On Tue, Sep 11, 2018 at 2:06 PM Souptick Joarder <jrdr.linux@...il.com> wrote:
>>
>> On Thu, Aug 2, 2018 at 9:12 PM Souptick Joarder <jrdr.linux@...il.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@...il.com>
>>> Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
>>> Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>
>>
>> Can we get this patch in queue for 4.20 ? Not yet available in linux-next.
> 
> Is this patch queued for 4.20 ?

Queued already to exynos-drm-next below so please wait. I will have pull-request soon.
https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git/log/?h=exynos-drm-next

Thanks,
Inki Dae

> 
>>> ---
>>> 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
>>>
> 
>