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platform_kernel-5.15
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drm/fb_cma_helper: add suspend helper 

Implement a suspend/resume helper for CMA users which calls
drm_fb_helper_set_suspend.

Suggested-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Stefan Agner <stefan@agner.ch>
This commit is contained in:
Stefan Agner 2016-02-11 17:30:14 -08:00
parent 5edb56491d
commit 917f425336
2 changed files with 16 additions and 0 deletions
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15
drivers/gpu/drm/drm_fb_cma_helper.c
View File

@ -582,3 +582,18 @@ void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper);
}
EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
/**
* drm_fbdev_cma_set_suspend - wrapper around drm_fb_helper_set_suspend
* @fbdev_cma: The drm_fbdev_cma struct, may be NULL
* @state: desired state, zero to resume, non-zero to suspend
*
* Calls drm_fb_helper_set_suspend, which is a wrapper around
* fb_set_suspend implemented by fbdev core.
*/
void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state)
{
if (fbdev_cma)
drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
}
EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);

1
include/drm/drm_fb_cma_helper.h
View File

@ -23,6 +23,7 @@ void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma);
void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state);
int drm_fbdev_cma_create_with_funcs(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes,
const struct drm_framebuffer_funcs *funcs);