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drm_client.c revision 1.1 
      1 /*	$NetBSD: drm_client.c,v 1.1 2021/12/19 10:46:35 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 1.1 2021/12/19 10:46:35 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 	return 0;
     46 }
     47 
     48 void
     49 drm_client_register(struct drm_client_dev *client)
     50 {
     51 }
     52 
     53 void
     54 drm_client_release(struct drm_client_dev *client)
     55 {
     56 }
     57 
     58 void
     59 drm_client_dev_hotplug(struct drm_device *dev)
     60 {
     61 }
     62 
     63 void
     64 drm_client_dev_restore(struct drm_device *dev)
     65 {
     66 }
     67 
     68 void
     69 drm_client_dev_unregister(struct drm_device *dev)
     70 {
     71 }
     72 
     73 struct drm_client_buffer *
     74 drm_client_framebuffer_create(struct drm_client_dev *client,
     75     u32 width, u32 height, u32 format)
     76 {
     77 	struct drm_client_buffer *buffer;
     78 
     79 	buffer = kmem_zalloc(sizeof(*buffer), KM_SLEEP);
     80 
     81 	return buffer;
     82 }
     83 
     84 void *
     85 drm_client_buffer_vmap(struct drm_client_buffer *buffer)
     86 {
     87 	return ERR_PTR(-ENODEV);
     88 }
     89 
     90 void
     91 drm_client_buffer_vunmap(struct drm_client_buffer *buffer)
     92 {
     93 	panic("impossible");
     94 }
     95 
     96 void
     97 drm_client_framebuffer_delete(struct drm_client_buffer *buffer)
     98 {
     99 	kmem_free(buffer, sizeof(*buffer));
    100 }
    101