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
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
/*
* upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan
*
* 2003 by T.Adachi <tadachi@tadachi-net.com>
* 2003 by Takeru KOMORIYA <komoriya@paken.org>
* 2006 by Hans Verkuil <hverkuil@xs4all.nl>
*
* 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.
*
* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/upd64031a.h>
/* --------------------- read registers functions define -------------------- */
/* bit masks */
#define GR_MODE_MASK 0xc0
#define DIRECT_3DYCS_CONNECT_MASK 0xc0
#define SYNC_CIRCUIT_MASK 0xa0
/* -------------------------------------------------------------------------- */
MODULE_DESCRIPTION("uPD64031A driver");
MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
MODULE_LICENSE("GPL");
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
enum {
R00 = 0, R01, R02, R03, R04,
R05, R06, R07, R08, R09,
R0A, R0B, R0C, R0D, R0E, R0F,
/* unused registers
R10, R11, R12, R13, R14,
R15, R16, R17,
*/
TOT_REGS
};
struct upd64031a_state {
struct v4l2_subdev sd;
u8 regs[TOT_REGS];
u8 gr_mode;
u8 direct_3dycs_connect;
u8 ext_comp_sync;
u8 ext_vert_sync;
};
static inline struct upd64031a_state *to_state(struct v4l2_subdev *sd)
{
return container_of(sd, struct upd64031a_state, sd);
}
static u8 upd64031a_init[] = {
0x00, 0xb8, 0x48, 0xd2, 0xe6,
0x03, 0x10, 0x0b, 0xaf, 0x7f,
0x00, 0x00, 0x1d, 0x5e, 0x00,
0xd0
};
/* ------------------------------------------------------------------------ */
static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 buf[2];
if (reg >= sizeof(buf))
return 0xff;
i2c_master_recv(client, buf, 2);
return buf[reg];
}
/* ------------------------------------------------------------------------ */
static void upd64031a_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 buf[2];
buf[0] = reg;
buf[1] = val;
v4l2_dbg(1, debug, sd, "write reg: %02X val: %02X\n", reg, val);
if (i2c_master_send(client, buf, 2) != 2)
v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val);
}
/* ------------------------------------------------------------------------ */
/* The input changed due to new input or channel changed */
static int upd64031a_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
{
struct upd64031a_state *state = to_state(sd);
u8 reg = state->regs[R00];
v4l2_dbg(1, debug, sd, "changed input or channel\n");
upd64031a_write(sd, R00, reg | 0x10);
upd64031a_write(sd, R00, reg & ~0x10);
return 0;
}
/* ------------------------------------------------------------------------ */
static int upd64031a_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct upd64031a_state *state = to_state(sd);
u8 r00, r05, r08;
state->gr_mode = (input & 3) << 6;
state->direct_3dycs_connect = (input & 0xc) << 4;
state->ext_comp_sync =
(input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
state->ext_vert_sync =
(input & UPD64031A_VERTICAL_EXTERNAL) << 2;
r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode;
r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) |
state->ext_comp_sync | state->ext_vert_sync;
r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) |
state->direct_3dycs_connect;
upd64031a_write(sd, R00, r00);
upd64031a_write(sd, R05, r05);
upd64031a_write(sd, R08, r08);
return upd64031a_s_frequency(sd, NULL);
}
static int upd64031a_log_status(struct v4l2_subdev *sd)
{
v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n",
upd64031a_read(sd, 0), upd64031a_read(sd, 1));
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
{
reg->val = upd64031a_read(sd, reg->reg & 0xff);
reg->size = 1;
return 0;
}
static int upd64031a_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
{
upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff);
return 0;
}
#endif
/* ----------------------------------------------------------------------- */
static const struct v4l2_subdev_core_ops upd64031a_core_ops = {
.log_status = upd64031a_log_status,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = upd64031a_g_register,
.s_register = upd64031a_s_register,
#endif
};
static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = {
.s_frequency = upd64031a_s_frequency,
};
static const struct v4l2_subdev_video_ops upd64031a_video_ops = {
.s_routing = upd64031a_s_routing,
};
static const struct v4l2_subdev_ops upd64031a_ops = {
.core = &upd64031a_core_ops,
.tuner = &upd64031a_tuner_ops,
.video = &upd64031a_video_ops,
};
/* ------------------------------------------------------------------------ */
/* i2c implementation */
static int upd64031a_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct upd64031a_state *state;
struct v4l2_subdev *sd;
int i;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &upd64031a_ops);
memcpy(state->regs, upd64031a_init, sizeof(state->regs));
state->gr_mode = UPD64031A_GR_ON << 6;
state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4;
state->ext_comp_sync = state->ext_vert_sync = 0;
for (i = 0; i < TOT_REGS; i++)
upd64031a_write(sd, i, state->regs[i]);
return 0;
}
static int upd64031a_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct i2c_device_id upd64031a_id[] = {
{ "upd64031a", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, upd64031a_id);
static struct i2c_driver upd64031a_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "upd64031a",
},
.probe = upd64031a_probe,
.remove = upd64031a_remove,
.id_table = upd64031a_id,
};
module_i2c_driver(upd64031a_driver);
|
