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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*
* hdmi_omap4_panel.c
*
* HDMI library support functions for TI OMAP4 processors.
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
* Authors: Mythri P k <mythripk@ti.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.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <plat/display.h>
#include "dss.h"
static struct {
struct mutex hdmi_lock;
} hdmi;
static int hdmi_panel_probe(struct omap_dss_device *dssdev)
{
DSSDBG("ENTER hdmi_panel_probe\n");
dssdev->panel.config = OMAP_DSS_LCD_TFT |
OMAP_DSS_LCD_IVS | OMAP_DSS_LCD_IHS;
/*
* Initialize the timings to 640 * 480
* This is only for framebuffer update not for TV timing setting
* Setting TV timing will be done only on enable
*/
dssdev->panel.timings.x_res = 640;
dssdev->panel.timings.y_res = 480;
DSSDBG("hdmi_panel_probe x_res= %d y_res = %d\n",
dssdev->panel.timings.x_res,
dssdev->panel.timings.y_res);
return 0;
}
static void hdmi_panel_remove(struct omap_dss_device *dssdev)
{
}
static int hdmi_panel_enable(struct omap_dss_device *dssdev)
{
int r = 0;
DSSDBG("ENTER hdmi_panel_enable\n");
mutex_lock(&hdmi.hdmi_lock);
if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
r = -EINVAL;
goto err;
}
r = omapdss_hdmi_display_enable(dssdev);
if (r) {
DSSERR("failed to power on\n");
goto err;
}
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
err:
mutex_unlock(&hdmi.hdmi_lock);
return r;
}
static void hdmi_panel_disable(struct omap_dss_device *dssdev)
{
mutex_lock(&hdmi.hdmi_lock);
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
omapdss_hdmi_display_disable(dssdev);
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
mutex_unlock(&hdmi.hdmi_lock);
}
static int hdmi_panel_suspend(struct omap_dss_device *dssdev)
{
int r = 0;
mutex_lock(&hdmi.hdmi_lock);
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
r = -EINVAL;
goto err;
}
dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
omapdss_hdmi_display_disable(dssdev);
err:
mutex_unlock(&hdmi.hdmi_lock);
return r;
}
static int hdmi_panel_resume(struct omap_dss_device *dssdev)
{
int r = 0;
mutex_lock(&hdmi.hdmi_lock);
if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) {
r = -EINVAL;
goto err;
}
r = omapdss_hdmi_display_enable(dssdev);
if (r) {
DSSERR("failed to power on\n");
goto err;
}
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
err:
mutex_unlock(&hdmi.hdmi_lock);
return r;
}
static void hdmi_get_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
mutex_lock(&hdmi.hdmi_lock);
*timings = dssdev->panel.timings;
mutex_unlock(&hdmi.hdmi_lock);
}
static void hdmi_set_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
DSSDBG("hdmi_set_timings\n");
mutex_lock(&hdmi.hdmi_lock);
dssdev->panel.timings = *timings;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
/* turn the hdmi off and on to get new timings to use */
omapdss_hdmi_display_disable(dssdev);
omapdss_hdmi_display_set_timing(dssdev);
}
mutex_unlock(&hdmi.hdmi_lock);
}
static int hdmi_check_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
int r = 0;
DSSDBG("hdmi_check_timings\n");
mutex_lock(&hdmi.hdmi_lock);
r = omapdss_hdmi_display_check_timing(dssdev, timings);
if (r) {
DSSERR("Timing cannot be applied\n");
goto err;
}
err:
mutex_unlock(&hdmi.hdmi_lock);
return r;
}
static struct omap_dss_driver hdmi_driver = {
.probe = hdmi_panel_probe,
.remove = hdmi_panel_remove,
.enable = hdmi_panel_enable,
.disable = hdmi_panel_disable,
.suspend = hdmi_panel_suspend,
.resume = hdmi_panel_resume,
.get_timings = hdmi_get_timings,
.set_timings = hdmi_set_timings,
.check_timings = hdmi_check_timings,
.driver = {
.name = "hdmi_panel",
.owner = THIS_MODULE,
},
};
int hdmi_panel_init(void)
{
mutex_init(&hdmi.hdmi_lock);
omap_dss_register_driver(&hdmi_driver);
return 0;
}
void hdmi_panel_exit(void)
{
omap_dss_unregister_driver(&hdmi_driver);
}
|
