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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* R-Car Display Unit HDMI Encoder
*
* Copyright (C) 2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/slab.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder_slave.h>
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
#include "rcar_du_hdmienc.h"
#include "rcar_du_lvdsenc.h"
struct rcar_du_hdmienc {
struct rcar_du_encoder *renc;
struct device *dev;
bool enabled;
};
#define to_rcar_hdmienc(e) (to_rcar_encoder(e)->hdmi)
#define to_slave_funcs(e) (to_rcar_encoder(e)->slave.slave_funcs)
static void rcar_du_hdmienc_disable(struct drm_encoder *encoder)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->dpms)
sfuncs->dpms(encoder, DRM_MODE_DPMS_OFF);
if (hdmienc->renc->lvds)
rcar_du_lvdsenc_enable(hdmienc->renc->lvds, encoder->crtc,
false);
hdmienc->enabled = false;
}
static void rcar_du_hdmienc_enable(struct drm_encoder *encoder)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (hdmienc->renc->lvds)
rcar_du_lvdsenc_enable(hdmienc->renc->lvds, encoder->crtc,
true);
if (sfuncs->dpms)
sfuncs->dpms(encoder, DRM_MODE_DPMS_ON);
hdmienc->enabled = true;
}
static int rcar_du_hdmienc_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
const struct drm_display_mode *mode = &crtc_state->mode;
if (hdmienc->renc->lvds)
rcar_du_lvdsenc_atomic_check(hdmienc->renc->lvds,
adjusted_mode);
if (sfuncs->mode_fixup == NULL)
return 0;
return sfuncs->mode_fixup(encoder, mode, adjusted_mode) ? 0 : -EINVAL;
}
static void rcar_du_hdmienc_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
const struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
if (sfuncs->mode_set)
sfuncs->mode_set(encoder, mode, adjusted_mode);
rcar_du_crtc_route_output(encoder->crtc, hdmienc->renc->output);
}
static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
.mode_set = rcar_du_hdmienc_mode_set,
.disable = rcar_du_hdmienc_disable,
.enable = rcar_du_hdmienc_enable,
.atomic_check = rcar_du_hdmienc_atomic_check,
};
static void rcar_du_hdmienc_cleanup(struct drm_encoder *encoder)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
if (hdmienc->enabled)
rcar_du_hdmienc_disable(encoder);
drm_encoder_cleanup(encoder);
put_device(hdmienc->dev);
}
static const struct drm_encoder_funcs encoder_funcs = {
.destroy = rcar_du_hdmienc_cleanup,
};
int rcar_du_hdmienc_init(struct rcar_du_device *rcdu,
struct rcar_du_encoder *renc, struct device_node *np)
{
struct drm_encoder *encoder = rcar_encoder_to_drm_encoder(renc);
struct drm_i2c_encoder_driver *driver;
struct i2c_client *i2c_slave;
struct rcar_du_hdmienc *hdmienc;
int ret;
hdmienc = devm_kzalloc(rcdu->dev, sizeof(*hdmienc), GFP_KERNEL);
if (hdmienc == NULL)
return -ENOMEM;
/* Locate the slave I2C device and driver. */
i2c_slave = of_find_i2c_device_by_node(np);
if (!i2c_slave || !i2c_get_clientdata(i2c_slave)) {
dev_dbg(rcdu->dev,
"can't get I2C slave for %s, deferring probe\n",
of_node_full_name(np));
return -EPROBE_DEFER;
}
hdmienc->dev = &i2c_slave->dev;
if (hdmienc->dev->driver == NULL) {
dev_dbg(rcdu->dev,
"I2C slave %s not probed yet, deferring probe\n",
dev_name(hdmienc->dev));
ret = -EPROBE_DEFER;
goto error;
}
/* Initialize the slave encoder. */
driver = to_drm_i2c_encoder_driver(to_i2c_driver(hdmienc->dev->driver));
ret = driver->encoder_init(i2c_slave, rcdu->ddev, &renc->slave);
if (ret < 0)
goto error;
ret = drm_encoder_init(rcdu->ddev, encoder, &encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
if (ret < 0)
goto error;
drm_encoder_helper_add(encoder, &encoder_helper_funcs);
renc->hdmi = hdmienc;
hdmienc->renc = renc;
return 0;
error:
put_device(hdmienc->dev);
return ret;
}
|
