#include "vkms_drv.h"
#include <drm/drm_plane_helper.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+
+static struct drm_plane_state *
+vkms_plane_duplicate_state(struct drm_plane *plane)
+{
+ struct vkms_plane_state *vkms_state;
+ struct vkms_crc_data *crc_data;
+
+ vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL);
+ if (!vkms_state)
+ return NULL;
+
+ crc_data = kzalloc(sizeof(*crc_data), GFP_KERNEL);
+ if (WARN_ON(!crc_data))
+ DRM_INFO("Couldn't allocate crc_data");
+
+ vkms_state->crc_data = crc_data;
+
+ __drm_atomic_helper_plane_duplicate_state(plane,
+ &vkms_state->base);
+
+ return &vkms_state->base;
+}
+
+static void vkms_plane_destroy_state(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct vkms_plane_state *vkms_state = to_vkms_plane_state(old_state);
+ struct drm_crtc *crtc = vkms_state->base.crtc;
+
+ if (crtc) {
+ /* dropping the reference we acquired in
+ * vkms_primary_plane_update()
+ */
+ if (drm_framebuffer_read_refcount(&vkms_state->crc_data->fb))
+ drm_framebuffer_put(&vkms_state->crc_data->fb);
+ }
+
+ kfree(vkms_state->crc_data);
+ vkms_state->crc_data = NULL;
+
+ __drm_atomic_helper_plane_destroy_state(old_state);
+ kfree(vkms_state);
+}
+
+static void vkms_plane_reset(struct drm_plane *plane)
+{
+ struct vkms_plane_state *vkms_state;
+
+ if (plane->state)
+ vkms_plane_destroy_state(plane, plane->state);
+
+ vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL);
+ if (!vkms_state) {
+ DRM_ERROR("Cannot allocate vkms_plane_state\n");
+ return;
+ }
+
+ plane->state = &vkms_state->base;
+ plane->state->plane = plane;
+}
static const struct drm_plane_funcs vkms_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_plane_cleanup,
- .reset = drm_atomic_helper_plane_reset,
- .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .reset = vkms_plane_reset,
+ .atomic_duplicate_state = vkms_plane_duplicate_state,
+ .atomic_destroy_state = vkms_plane_destroy_state,
};
-static void vkms_primary_plane_update(struct drm_plane *plane,
- struct drm_plane_state *old_state)
+static void vkms_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
{
+ struct vkms_plane_state *vkms_plane_state;
+ struct vkms_crc_data *crc_data;
+
+ if (!plane->state->crtc || !plane->state->fb)
+ return;
+
+ vkms_plane_state = to_vkms_plane_state(plane->state);
+ crc_data = vkms_plane_state->crc_data;
+ memcpy(&crc_data->src, &plane->state->src, sizeof(struct drm_rect));
+ memcpy(&crc_data->fb, plane->state->fb, sizeof(struct drm_framebuffer));
+ drm_framebuffer_get(&crc_data->fb);
+}
+
+static int vkms_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct drm_crtc_state *crtc_state;
+ bool can_position = false;
+ 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);
+
+ if (plane->type == DRM_PLANE_TYPE_CURSOR)
+ can_position = true;
+
+ ret = drm_atomic_helper_check_plane_state(state, crtc_state,
+ DRM_PLANE_HELPER_NO_SCALING,
+ DRM_PLANE_HELPER_NO_SCALING,
+ can_position, true);
+ if (ret != 0)
+ return ret;
+
+ /* for now primary plane must be visible and full screen */
+ if (!state->visible && !can_position)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int vkms_prepare_fb(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ struct drm_gem_object *gem_obj;
+ struct vkms_gem_object *vkms_obj;
+ int ret;
+
+ if (!state->fb)
+ return 0;
+
+ gem_obj = drm_gem_fb_get_obj(state->fb, 0);
+ vkms_obj = drm_gem_to_vkms_gem(gem_obj);
+ ret = vkms_gem_vmap(gem_obj);
+ if (ret)
+ DRM_ERROR("vmap failed: %d\n", ret);
+
+ return drm_gem_fb_prepare_fb(plane, state);
+}
+
+static void vkms_cleanup_fb(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct drm_gem_object *gem_obj;
+
+ if (!old_state->fb)
+ return;
+
+ gem_obj = drm_gem_fb_get_obj(old_state->fb, 0);
+ vkms_gem_vunmap(gem_obj);
}
static const struct drm_plane_helper_funcs vkms_primary_helper_funcs = {
- .atomic_update = vkms_primary_plane_update,
+ .atomic_update = vkms_plane_atomic_update,
+ .atomic_check = vkms_plane_atomic_check,
+ .prepare_fb = vkms_prepare_fb,
+ .cleanup_fb = vkms_cleanup_fb,
};
-struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev)
+struct drm_plane *vkms_plane_init(struct vkms_device *vkmsdev,
+ enum drm_plane_type type)
{
struct drm_device *dev = &vkmsdev->drm;
+ const struct drm_plane_helper_funcs *funcs;
struct drm_plane *plane;
const u32 *formats;
int ret, nformats;
if (!plane)
return ERR_PTR(-ENOMEM);
- formats = vkms_formats;
- nformats = ARRAY_SIZE(vkms_formats);
+ if (type == DRM_PLANE_TYPE_CURSOR) {
+ formats = vkms_cursor_formats;
+ nformats = ARRAY_SIZE(vkms_cursor_formats);
+ funcs = &vkms_primary_helper_funcs;
+ } else {
+ formats = vkms_formats;
+ nformats = ARRAY_SIZE(vkms_formats);
+ funcs = &vkms_primary_helper_funcs;
+ }
ret = drm_universal_plane_init(dev, plane, 0,
&vkms_plane_funcs,
formats, nformats,
- NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
+ NULL, type, NULL);
if (ret) {
kfree(plane);
return ERR_PTR(ret);
}
- drm_plane_helper_add(plane, &vkms_primary_helper_funcs);
+ drm_plane_helper_add(plane, funcs);
return plane;
}
projects / linux-2.6-microblaze.git / blobdiff