[PATCH v2 06/15] drm/exynos: Use drm_fb_helper_lastclose() and _poll_changed()

[Daniel Vetter]

On Mon, Oct 30, 2017 at 04:39:42PM +0100, Noralf Trønnes wrote:
> This driver can use drm_fb_helper_lastclose() as its .lastclose callback.
> It can also use drm_fb_helper_output_poll_changed() as its
> .output_poll_changed callback.
> 
> Cc: Inki Dae <inki.dae at samsung.com>
> Cc: Joonyoung Shim <jy0922.shim at samsung.com>
> Cc: Seung-Woo Kim <sw0312.kim at samsung.com>
> Cc: Kyungmin Park <kyungmin.park at samsung.com>
> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_drv.c   |  8 ++------
>  drivers/gpu/drm/exynos/exynos_drm_fb.c    |  2 +-
>  drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 18 ------------------
>  drivers/gpu/drm/exynos/exynos_drm_fbdev.h |  2 --
>  4 files changed, 3 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> index e651a58c18cf..70f4895ac49c 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
> @@ -16,6 +16,7 @@
>  #include <drm/drm_atomic.h>
>  #include <drm/drm_atomic_helper.h>
>  #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_fb_helper.h>
>  
>  #include <linux/component.h>
>  
> @@ -89,11 +90,6 @@ static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
>  	file->driver_priv = NULL;
>  }
>  
> -static void exynos_drm_lastclose(struct drm_device *dev)
> -{
> -	exynos_drm_fbdev_restore_mode(dev);
> -}
> -
>  static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
>  	.fault = exynos_drm_gem_fault,
>  	.open = drm_gem_vm_open,
> @@ -140,7 +136,7 @@ static struct drm_driver exynos_drm_driver = {
>  	.driver_features	= DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
>  				  | DRIVER_ATOMIC | DRIVER_RENDER,
>  	.open			= exynos_drm_open,
> -	.lastclose		= exynos_drm_lastclose,
> +	.lastclose		= drm_fb_helper_lastclose,
>  	.postclose		= exynos_drm_postclose,
>  	.gem_free_object_unlocked = exynos_drm_gem_free_object,
>  	.gem_vm_ops		= &exynos_drm_gem_vm_ops,
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
> index 8208df56a88f..0faaf829f5bf 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
> @@ -205,7 +205,7 @@ static struct drm_mode_config_helper_funcs exynos_drm_mode_config_helpers = {
>  
>  static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = {
>  	.fb_create = exynos_user_fb_create,
> -	.output_poll_changed = exynos_drm_output_poll_changed,
> +	.output_poll_changed = drm_fb_helper_output_poll_changed,
>  	.atomic_check = exynos_atomic_check,
>  	.atomic_commit = drm_atomic_helper_commit,
>  };
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> index dfb66ecf417b..132dd52d0ac7 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> @@ -270,24 +270,6 @@ void exynos_drm_fbdev_fini(struct drm_device *dev)
>  	private->fb_helper = NULL;
>  }
>  
> -void exynos_drm_fbdev_restore_mode(struct drm_device *dev)
> -{
> -	struct exynos_drm_private *private = dev->dev_private;
> -
> -	if (!private || !private->fb_helper)

Not sure this isn't risky, exynos has a strange load sequence ... Probably
best if we get an ack from Inki.
-Daniel
> -		return;
> -
> -	drm_fb_helper_restore_fbdev_mode_unlocked(private->fb_helper);
> -}
> -
> -void exynos_drm_output_poll_changed(struct drm_device *dev)
> -{
> -	struct exynos_drm_private *private = dev->dev_private;
> -	struct drm_fb_helper *fb_helper = private->fb_helper;
> -
> -	drm_fb_helper_hotplug_event(fb_helper);
> -}
> -
>  void exynos_drm_fbdev_suspend(struct drm_device *dev)
>  {
>  	struct exynos_drm_private *private = dev->dev_private;
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
> index 645d1bb7f665..b33847223a85 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_restore_mode(struct drm_device *dev);
> -void exynos_drm_output_poll_changed(struct drm_device *dev);
>  void exynos_drm_fbdev_suspend(struct drm_device *drm);
>  void exynos_drm_fbdev_resume(struct drm_device *drm);
>  
> -- 
> 2.14.2
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch