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drm_client.c revision 1.2 
      1 /*	$NetBSD: drm_client.c,v 1.2 2021/12/19 11:07:49 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 1.2 2021/12/19 11:07:49 riastradh Exp $");
     34 
     35 #include <sys/kmem.h>
     36 
     37 #include <linux/err.h>
     38 
     39 #include <drm/drm_client.h>
     40 
     41 int
     42 drm_client_init(struct drm_device *dev, struct drm_client_dev *client,
     43     const char *name, const struct drm_client_funcs *funcs)
     44 {
     45 
     46 	client->dev = dev;
     47 
     48 	return 0;
     49 }
     50 
     51 void
     52 drm_client_register(struct drm_client_dev *client)
     53 {
     54 }
     55 
     56 void
     57 drm_client_release(struct drm_client_dev *client)
     58 {
     59 }
     60 
     61 void
     62 drm_client_dev_hotplug(struct drm_device *dev)
     63 {
     64 }
     65 
     66 void
     67 drm_client_dev_restore(struct drm_device *dev)
     68 {
     69 }
     70 
     71 void
     72 drm_client_dev_unregister(struct drm_device *dev)
     73 {
     74 }
     75 
     76 struct drm_client_buffer *
     77 drm_client_framebuffer_create(struct drm_client_dev *client,
     78     u32 width, u32 height, u32 format)
     79 {
     80 	struct drm_client_buffer *buffer;
     81 
     82 	buffer = kmem_zalloc(sizeof(*buffer), KM_SLEEP);
     83 
     84 	return buffer;
     85 }
     86 
     87 void *
     88 drm_client_buffer_vmap(struct drm_client_buffer *buffer)
     89 {
     90 	return ERR_PTR(-ENODEV);
     91 }
     92 
     93 void
     94 drm_client_buffer_vunmap(struct drm_client_buffer *buffer)
     95 {
     96 	panic("impossible");
     97 }
     98 
     99 void
    100 drm_client_framebuffer_delete(struct drm_client_buffer *buffer)
    101 {
    102 	kmem_free(buffer, sizeof(*buffer));
    103 }
    104