1 files changed, 120 insertions, 0 deletions

diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
new file mode 100644
index 000000000000..4a74129c5708
--- /dev/null
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "virtgpu_drv.h"
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_atomic_helper.h>
+
+static const uint32_t virtio_gpu_formats[] = {
+        DRM_FORMAT_XRGB8888,
+        DRM_FORMAT_ARGB8888,
+        DRM_FORMAT_BGRX8888,
+        DRM_FORMAT_BGRA8888,
+        DRM_FORMAT_RGBX8888,
+        DRM_FORMAT_RGBA8888,
+        DRM_FORMAT_XBGR8888,
+        DRM_FORMAT_ABGR8888,
+};
+
+static void virtio_gpu_plane_destroy(struct drm_plane *plane)
+{
+        kfree(plane);
+}
+
+static const struct drm_plane_funcs virtio_gpu_plane_funcs = {
+        .update_plane           = drm_atomic_helper_update_plane,
+        .disable_plane          = drm_atomic_helper_disable_plane,
+        .destroy                = virtio_gpu_plane_destroy,
+        .reset                  = drm_atomic_helper_plane_reset,
+        .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+        .atomic_destroy_state   = drm_atomic_helper_plane_destroy_state,
+};
+
+static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
+                                         struct drm_plane_state *state)
+{
+        return 0;
+}
+
+static void virtio_gpu_plane_atomic_update(struct drm_plane *plane,
+                                           struct drm_plane_state *old_state)
+{
+        struct drm_device *dev = plane->dev;
+        struct virtio_gpu_device *vgdev = dev->dev_private;
+        struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(plane->crtc);
+        struct virtio_gpu_framebuffer *vgfb;
+        struct virtio_gpu_object *bo;
+        uint32_t handle;
+
+        if (plane->fb) {
+                vgfb = to_virtio_gpu_framebuffer(plane->fb);
+                bo = gem_to_virtio_gpu_obj(vgfb->obj);
+                handle = bo->hw_res_handle;
+        } else {
+                handle = 0;
+        }
+
+        DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d\n", handle,
+                  plane->state->crtc_w, plane->state->crtc_h,
+                  plane->state->crtc_x, plane->state->crtc_y);
+        virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
+                                   plane->state->crtc_w,
+                                   plane->state->crtc_h,
+                                   plane->state->crtc_x,
+                                   plane->state->crtc_y);
+}
+
+
+static const struct drm_plane_helper_funcs virtio_gpu_plane_helper_funcs = {
+        .atomic_check           = virtio_gpu_plane_atomic_check,
+        .atomic_update          = virtio_gpu_plane_atomic_update,
+};
+
+struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
+                                        int index)
+{
+        struct drm_device *dev = vgdev->ddev;
+        struct drm_plane *plane;
+        int ret;
+
+        plane = kzalloc(sizeof(*plane), GFP_KERNEL);
+        if (!plane)
+                return ERR_PTR(-ENOMEM);
+
+        ret = drm_universal_plane_init(dev, plane, 1 << index,
+                                       &virtio_gpu_plane_funcs,
+                                       virtio_gpu_formats,
+                                       ARRAY_SIZE(virtio_gpu_formats),
+                                       DRM_PLANE_TYPE_PRIMARY);
+        if (ret)
+                goto err_plane_init;
+
+        drm_plane_helper_add(plane, &virtio_gpu_plane_helper_funcs);
+        return plane;
+
+err_plane_init:
+        kfree(plane);
+        return ERR_PTR(ret);
+}