1 /* $NetBSD: drm_client.c,v 1.3 2021/12/19 11:07:55 riastradh Exp $ */
2
3 /*-
4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Taylor R. Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: drm_client.c,v 1.3 2021/12/19 11:07:55 riastradh Exp $");
34
35 #include <sys/kmem.h>
36
37 #include <linux/err.h>
38
39 #include <drm/drm_client.h>
40 #include <drm/drm_drv.h>
41
42 int
drm_client_init(struct drm_device * dev,struct drm_client_dev * client,const char * name,const struct drm_client_funcs * funcs)43 drm_client_init(struct drm_device *dev, struct drm_client_dev *client,
44 const char *name, const struct drm_client_funcs *funcs)
45 {
46 int ret;
47
48 client->dev = dev;
49
50 ret = drm_client_modeset_create(client);
51 if (ret)
52 goto out0;
53
54 drm_dev_get(dev);
55 return 0;
56
57 out0: return ret;
58 }
59
60 void
drm_client_register(struct drm_client_dev * client)61 drm_client_register(struct drm_client_dev *client)
62 {
63 }
64
65 void
drm_client_release(struct drm_client_dev * client)66 drm_client_release(struct drm_client_dev *client)
67 {
68
69 drm_client_modeset_free(client);
70 drm_dev_put(client->dev);
71 }
72
73 void
drm_client_dev_hotplug(struct drm_device * dev)74 drm_client_dev_hotplug(struct drm_device *dev)
75 {
76 }
77
78 void
drm_client_dev_restore(struct drm_device * dev)79 drm_client_dev_restore(struct drm_device *dev)
80 {
81 }
82
83 void
drm_client_dev_unregister(struct drm_device * dev)84 drm_client_dev_unregister(struct drm_device *dev)
85 {
86 }
87
88 struct drm_client_buffer *
drm_client_framebuffer_create(struct drm_client_dev * client,u32 width,u32 height,u32 format)89 drm_client_framebuffer_create(struct drm_client_dev *client,
90 u32 width, u32 height, u32 format)
91 {
92 struct drm_client_buffer *buffer;
93
94 buffer = kmem_zalloc(sizeof(*buffer), KM_SLEEP);
95
96 return buffer;
97 }
98
99 void *
drm_client_buffer_vmap(struct drm_client_buffer * buffer)100 drm_client_buffer_vmap(struct drm_client_buffer *buffer)
101 {
102 return ERR_PTR(-ENODEV);
103 }
104
105 void
drm_client_buffer_vunmap(struct drm_client_buffer * buffer)106 drm_client_buffer_vunmap(struct drm_client_buffer *buffer)
107 {
108 panic("impossible");
109 }
110
111 void
drm_client_framebuffer_delete(struct drm_client_buffer * buffer)112 drm_client_framebuffer_delete(struct drm_client_buffer *buffer)
113 {
114 kmem_free(buffer, sizeof(*buffer));
115 }
116