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 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 61 drm_client_register(struct drm_client_dev *client) 62 { 63 } 64 65 void 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 74 drm_client_dev_hotplug(struct drm_device *dev) 75 { 76 } 77 78 void 79 drm_client_dev_restore(struct drm_device *dev) 80 { 81 } 82 83 void 84 drm_client_dev_unregister(struct drm_device *dev) 85 { 86 } 87 88 struct drm_client_buffer * 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 * 100 drm_client_buffer_vmap(struct drm_client_buffer *buffer) 101 { 102 return ERR_PTR(-ENODEV); 103 } 104 105 void 106 drm_client_buffer_vunmap(struct drm_client_buffer *buffer) 107 { 108 panic("impossible"); 109 } 110 111 void 112 drm_client_framebuffer_delete(struct drm_client_buffer *buffer) 113 { 114 kmem_free(buffer, sizeof(*buffer)); 115 } 116