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      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