blob: b69c66b4897e46e2ea77890e39235f3d9e94b57d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/*
* ARC PGU DRM driver.
*
* Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <drm/drm_crtc.h>
#include <drm/drm_encoder_slave.h>
#include "arcpgu.h"
static struct drm_encoder_funcs arcpgu_drm_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np)
{
struct drm_encoder *encoder;
struct drm_bridge *bridge;
int ret = 0;
encoder = devm_kzalloc(drm->dev, sizeof(*encoder), GFP_KERNEL);
if (encoder == NULL)
return -ENOMEM;
/* Locate drm bridge from the hdmi encoder DT node */
bridge = of_drm_find_bridge(np);
if (!bridge)
return -EPROBE_DEFER;
encoder->possible_crtcs = 1;
encoder->possible_clones = 0;
ret = drm_encoder_init(drm, encoder, &arcpgu_drm_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
if (ret)
return ret;
/* Link drm_bridge to encoder */
bridge->encoder = encoder;
encoder->bridge = bridge;
ret = drm_bridge_attach(drm, bridge);
if (ret)
drm_encoder_cleanup(encoder);
return ret;
}
|
