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