diff options
Diffstat (limited to 'drivers/gpu/drm/virtio/virtgpu_plane.c')
| -rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_plane.c | 120 |
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 000000000..4a74129c5 --- /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); +} |