[deliverable/linux.git] / drivers / gpu / drm / virtio / virtgpu_plane.c

/*
 * 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, NULL);
	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);
}
Commit	Line	Data
dc5698e8 DA	1	/*
	2	* Copyright (C) 2015 Red Hat, Inc.
	3	* All Rights Reserved.
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining
	6	* a copy of this software and associated documentation files (the
	7	* "Software"), to deal in the Software without restriction, including
	8	* without limitation the rights to use, copy, modify, merge, publish,
	9	* distribute, sublicense, and/or sell copies of the Software, and to
	10	* permit persons to whom the Software is furnished to do so, subject to
	11	* the following conditions:
	12	*
	13	* The above copyright notice and this permission notice (including the
	14	* next paragraph) shall be included in all copies or substantial
	15	* portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	18	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	20	* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
	21	* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	22	* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	23	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	24	*/
	25
	26	#include "virtgpu_drv.h"
	27	#include <drm/drm_plane_helper.h>
	28	#include <drm/drm_atomic_helper.h>
	29
	30	static const uint32_t virtio_gpu_formats[] = {
	31	DRM_FORMAT_XRGB8888,
	32	DRM_FORMAT_ARGB8888,
	33	DRM_FORMAT_BGRX8888,
	34	DRM_FORMAT_BGRA8888,
	35	DRM_FORMAT_RGBX8888,
	36	DRM_FORMAT_RGBA8888,
	37	DRM_FORMAT_XBGR8888,
	38	DRM_FORMAT_ABGR8888,
	39	};
	40
	41	static void virtio_gpu_plane_destroy(struct drm_plane *plane)
	42	{
	43	kfree(plane);
	44	}
	45
	46	static const struct drm_plane_funcs virtio_gpu_plane_funcs = {
	47	.update_plane = drm_atomic_helper_update_plane,
	48	.disable_plane = drm_atomic_helper_disable_plane,
	49	.destroy = virtio_gpu_plane_destroy,
	50	.reset = drm_atomic_helper_plane_reset,
	51	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
	52	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
	53	};
	54
	55	static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
	56	struct drm_plane_state *state)
	57	{
	58	return 0;
	59	}
	60
	61	static void virtio_gpu_plane_atomic_update(struct drm_plane *plane,
	62	struct drm_plane_state *old_state)
	63	{
	64	struct drm_device *dev = plane->dev;
65	struct virtio_gpu_device *vgdev = dev->dev_private;
66	struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(plane->crtc);
67	struct virtio_gpu_framebuffer *vgfb;
68	struct virtio_gpu_object *bo;
69	uint32_t handle;
70
71	if (plane->fb) {
72	vgfb = to_virtio_gpu_framebuffer(plane->fb);
73	bo = gem_to_virtio_gpu_obj(vgfb->obj);
74	handle = bo->hw_res_handle;
75	} else {
76	handle = 0;
77	}
78
79	DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d\n", handle,
80	plane->state->crtc_w, plane->state->crtc_h,
81	plane->state->crtc_x, plane->state->crtc_y);
82	virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
83	plane->state->crtc_w,
84	plane->state->crtc_h,
85	plane->state->crtc_x,
86	plane->state->crtc_y);
87	}
88
89
90	static const struct drm_plane_helper_funcs virtio_gpu_plane_helper_funcs = {
91	.atomic_check = virtio_gpu_plane_atomic_check,
92	.atomic_update = virtio_gpu_plane_atomic_update,
93	};
94
95	struct drm_plane virtio_gpu_plane_init(struct virtio_gpu_device vgdev,
96	int index)
97	{
98	struct drm_device *dev = vgdev->ddev;
99	struct drm_plane *plane;
100	int ret;
101
102	plane = kzalloc(sizeof(*plane), GFP_KERNEL);
103	if (!plane)
104	return ERR_PTR(-ENOMEM);
105
106	ret = drm_universal_plane_init(dev, plane, 1 << index,
107	&virtio_gpu_plane_funcs,
108	virtio_gpu_formats,
109	ARRAY_SIZE(virtio_gpu_formats),
b0b3b795	110	DRM_PLANE_TYPE_PRIMARY, NULL);
dc5698e8 DA	111	if (ret)
	112	goto err_plane_init;
	113
	114	drm_plane_helper_add(plane, &virtio_gpu_plane_helper_funcs);
	115	return plane;
	116
	117	err_plane_init:
	118	kfree(plane);
	119	return ERR_PTR(ret);
	120	}