diff options
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_internal.h | 7 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_panic.c | 20 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 20e9d7b206a2..c10de39cbe83 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -317,4 +317,11 @@ drm_edid_load_firmware(struct drm_connector *connector) } #endif +/* drm_panic.c */ +#ifdef CONFIG_DRM_PANIC +bool drm_panic_is_enabled(struct drm_device *dev); +#else +bool drm_panic_is_enabled(struct drm_device *dev) {return false; } +#endif + #endif /* __DRM_CRTC_INTERNAL_H__ */ diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c index 8794c7f6c0ee..9f1a3568e62d 100644 --- a/drivers/gpu/drm/drm_panic.c +++ b/drivers/gpu/drm/drm_panic.c @@ -704,6 +704,26 @@ static void debugfs_register_plane(struct drm_plane *plane, int index) {} #endif /* CONFIG_DRM_PANIC_DEBUG */ /** + * drm_panic_is_enabled + * @dev: the drm device that may supports drm_panic + * + * returns true if the drm device supports drm_panic + */ +bool drm_panic_is_enabled(struct drm_device *dev) +{ + struct drm_plane *plane; + + if (!dev->mode_config.num_total_plane) + return false; + + drm_for_each_plane(plane, dev) + if (plane->helper_private && plane->helper_private->get_scanout_buffer) + return true; + return false; +} +EXPORT_SYMBOL(drm_panic_is_enabled); + +/** * drm_panic_register() - Initialize DRM panic for a device * @dev: the drm device on which the panic screen will be displayed. */ |