1/*
 2 * Copyright (C) 2012 Red Hat
 3 * based in parts on udlfb.c:
 4 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
 5 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
 6 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
 7 *
 8 * This file is subject to the terms and conditions of the GNU General Public
 9 * License v2. See the file COPYING in the main directory of this archive for
10 * more details.
11 */
12
13#include <drm/drmP.h>
14#include <drm/drm_crtc.h>
15#include <drm/drm_crtc_helper.h>
16#include "udl_drv.h"
17
18/* dummy encoder */
19static void udl_enc_destroy(struct drm_encoder *encoder)
20{
21	drm_encoder_cleanup(encoder);
22	kfree(encoder);
23}
24
25static void udl_encoder_disable(struct drm_encoder *encoder)
26{
27}
28
29static void udl_encoder_prepare(struct drm_encoder *encoder)
30{
31}
32
33static void udl_encoder_commit(struct drm_encoder *encoder)
34{
35}
36
37static void udl_encoder_mode_set(struct drm_encoder *encoder,
38				 struct drm_display_mode *mode,
39				 struct drm_display_mode *adjusted_mode)
40{
41}
42
43static void
44udl_encoder_dpms(struct drm_encoder *encoder, int mode)
45{
46}
47
48static const struct drm_encoder_helper_funcs udl_helper_funcs = {
49	.dpms = udl_encoder_dpms,
50	.prepare = udl_encoder_prepare,
51	.mode_set = udl_encoder_mode_set,
52	.commit = udl_encoder_commit,
53	.disable = udl_encoder_disable,
54};
55
56static const struct drm_encoder_funcs udl_enc_funcs = {
57	.destroy = udl_enc_destroy,
58};
59
60struct drm_encoder *udl_encoder_init(struct drm_device *dev)
61{
62	struct drm_encoder *encoder;
63
64	encoder = kzalloc(sizeof(struct drm_encoder), GFP_KERNEL);
65	if (!encoder)
66		return NULL;
67
68	drm_encoder_init(dev, encoder, &udl_enc_funcs, DRM_MODE_ENCODER_TMDS,
69			 NULL);
70	drm_encoder_helper_add(encoder, &udl_helper_funcs);
71	encoder->possible_crtcs = 1;
72	return encoder;
73}