Call atomic_helper_check_plane_state to clip plane coordinates.
Signed-off-by: Haneen Mohammed hamohammed.sa@gmail.com --- Changes in v2: - check for plane_state->visible since we can't handle a disabled primary plane yet.
drivers/gpu/drm/vkms/vkms_plane.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+)
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 877483984897..aaf7c35faed6 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -7,6 +7,7 @@ */
#include "vkms_drv.h" +#include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_plane_helper.h> @@ -25,6 +26,33 @@ static void vkms_primary_plane_update(struct drm_plane *plane, { }
+static int vkms_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct drm_crtc_state *crtc_state; + int ret; + + if (!state->fb | !state->crtc) + return 0; + + crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + + ret = drm_atomic_helper_check_plane_state(state, crtc_state, + DRM_PLANE_HELPER_NO_SCALING, + DRM_PLANE_HELPER_NO_SCALING, + false, true); + if (ret != 0) + return ret; + + /* for now primary plane must be visible and full screen */ + if (!state->visible) + return -EINVAL; + + return 0; +} + static int vkms_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state) { @@ -58,6 +86,7 @@ static void vkms_cleanup_fb(struct drm_plane *plane,
static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = { .atomic_update = vkms_primary_plane_update, + .atomic_check = vkms_plane_atomic_check, .prepare_fb = vkms_prepare_fb, .cleanup_fb = vkms_cleanup_fb, };