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Date: Tue, 11 Sep 2018 14:06:40 +0530
From: Souptick Joarder <jrdr.linux@...il.com>
To: Inki Dae <inki.dae@...sung.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()
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.
> ---
> 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
>
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