diff options
Diffstat (limited to 'drivers/gpu/drm/drm_plane_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_plane_helper.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c index c7785967f5bf..865bd999b187 100644 --- a/drivers/gpu/drm/drm_plane_helper.c +++ b/drivers/gpu/drm/drm_plane_helper.c @@ -30,8 +30,10 @@ #include <drm/drm_atomic_uapi.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_device.h> +#include <drm/drm_drv.h> #include <drm/drm_encoder.h> #include <drm/drm_plane_helper.h> +#include <drm/drm_print.h> #include <drm/drm_rect.h> #define SUBPIXEL_MASK 0xffff @@ -195,10 +197,14 @@ int drm_plane_helper_update_primary(struct drm_plane *plane, struct drm_crtc *cr .x2 = crtc_x + crtc_w, .y2 = crtc_y + crtc_h, }; + struct drm_device *dev = plane->dev; struct drm_connector **connector_list; int num_connectors, ret; bool visible; + if (drm_WARN_ON_ONCE(dev, drm_drv_uses_atomic_modeset(dev))) + return -EINVAL; + ret = drm_plane_helper_check_update(plane, crtc, fb, &src, &dest, DRM_MODE_ROTATE_0, @@ -260,6 +266,10 @@ EXPORT_SYMBOL(drm_plane_helper_update_primary); int drm_plane_helper_disable_primary(struct drm_plane *plane, struct drm_modeset_acquire_ctx *ctx) { + struct drm_device *dev = plane->dev; + + drm_WARN_ON_ONCE(dev, drm_drv_uses_atomic_modeset(dev)); + return -EINVAL; } EXPORT_SYMBOL(drm_plane_helper_disable_primary); @@ -278,3 +288,33 @@ void drm_plane_helper_destroy(struct drm_plane *plane) kfree(plane); } EXPORT_SYMBOL(drm_plane_helper_destroy); + +/** + * drm_plane_helper_atomic_check() - Helper to check plane atomic-state + * @plane: plane to check + * @state: atomic state object + * + * Provides a default plane-state check handler for planes whose atomic-state + * scale and positioning are not expected to change since the plane is always + * a fullscreen scanout buffer. + * + * This is often the case for the primary plane of simple framebuffers. + * + * RETURNS: + * Zero on success, or an errno code otherwise. + */ +int drm_plane_helper_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state) +{ + struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, plane); + struct drm_crtc *new_crtc = new_plane_state->crtc; + struct drm_crtc_state *new_crtc_state = NULL; + + if (new_crtc) + new_crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc); + + return drm_atomic_helper_check_plane_state(new_plane_state, new_crtc_state, + DRM_PLANE_NO_SCALING, + DRM_PLANE_NO_SCALING, + false, false); +} +EXPORT_SYMBOL(drm_plane_helper_atomic_check); |