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
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
/*
* 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/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-chip-ident.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 = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
static unsigned short normal_i2c[] = { 0x24 >> 1, 0x26 >> 1, I2C_CLIENT_END };
I2C_CLIENT_INSMOD;
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 {
u8 regs[TOT_REGS];
u8 gr_mode;
u8 direct_3dycs_connect;
u8 ext_comp_sync;
u8 ext_vert_sync;
};
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 i2c_client *client, u8 reg)
{
u8 buf[2];
if (reg >= sizeof(buf))
return 0xff;
i2c_master_recv(client, buf, 2);
return buf[reg];
}
/* ------------------------------------------------------------------------ */
static void upd64031a_write(struct i2c_client *client, u8 reg, u8 val)
{
u8 buf[2];
buf[0] = reg;
buf[1] = val;
v4l_dbg(1, debug, client, "writing reg addr: %02X val: %02X\n", reg, val);
if (i2c_master_send(client, buf, 2) != 2)
v4l_err(client, "I/O error write 0x%02x/0x%02x\n", reg, val);
}
/* ------------------------------------------------------------------------ */
/* The input changed due to new input or channel changed */
static void upd64031a_change(struct i2c_client *client)
{
struct upd64031a_state *state = i2c_get_clientdata(client);
u8 reg = state->regs[R00];
v4l_dbg(1, debug, client, "changed input or channel\n");
upd64031a_write(client, R00, reg | 0x10);
upd64031a_write(client, R00, reg & ~0x10);
}
/* ------------------------------------------------------------------------ */
static int upd64031a_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
struct upd64031a_state *state = i2c_get_clientdata(client);
struct v4l2_routing *route = arg;
switch (cmd) {
case VIDIOC_S_FREQUENCY:
upd64031a_change(client);
break;
case VIDIOC_INT_G_VIDEO_ROUTING:
route->input = (state->gr_mode >> 6) |
(state->direct_3dycs_connect >> 4) |
(state->ext_comp_sync >> 1) |
(state->ext_vert_sync >> 2);
route->output = 0;
break;
case VIDIOC_INT_S_VIDEO_ROUTING:
{
u8 r00, r05, r08;
state->gr_mode = (route->input & 3) << 6;
state->direct_3dycs_connect = (route->input & 0xc) << 4;
state->ext_comp_sync = (route->input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
state->ext_vert_sync = (route->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(client, R00, r00);
upd64031a_write(client, R05, r05);
upd64031a_write(client, R08, r08);
upd64031a_change(client);
break;
}
case VIDIOC_LOG_STATUS:
v4l_info(client, "Status: SA00=0x%02x SA01=0x%02x\n",
upd64031a_read(client, 0), upd64031a_read(client, 1));
break;
#ifdef CONFIG_VIDEO_ADV_DEBUG
case VIDIOC_DBG_G_REGISTER:
case VIDIOC_DBG_S_REGISTER:
{
struct v4l2_register *reg = arg;
if (!v4l2_chip_match_i2c_client(client, reg->match_type, reg->match_chip))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (cmd == VIDIOC_DBG_G_REGISTER)
reg->val = upd64031a_read(client, reg->reg & 0xff);
else
upd64031a_write(client, reg->reg & 0xff, reg->val & 0xff);
break;
}
#endif
case VIDIOC_G_CHIP_IDENT:
return v4l2_chip_ident_i2c_client(client, arg, V4L2_IDENT_UPD64031A, 0);
default:
break;
}
return 0;
}
/* ------------------------------------------------------------------------ */
/* i2c implementation */
static struct i2c_driver i2c_driver;
static int upd64031a_attach(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client *client;
struct upd64031a_state *state;
int i;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return 0;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (client == NULL) {
return -ENOMEM;
}
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver;
snprintf(client->name, sizeof(client->name) - 1, "uPD64031A");
v4l_info(client, "chip found @ 0x%x (%s)\n", address << 1, adapter->name);
state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL);
if (state == NULL) {
kfree(client);
return -ENOMEM;
}
i2c_set_clientdata(client, state);
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(client, i, state->regs[i]);
}
i2c_attach_client(client);
return 0;
}
static int upd64031a_probe(struct i2c_adapter *adapter)
{
if (adapter->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adapter, &addr_data, upd64031a_attach);
return 0;
}
static int upd64031a_detach(struct i2c_client *client)
{
int err;
err = i2c_detach_client(client);
if (err)
return err;
kfree(client);
return 0;
}
/* ----------------------------------------------------------------------- */
/* i2c implementation */
static struct i2c_driver i2c_driver = {
.driver = {
.name = "upd64031a",
},
.id = I2C_DRIVERID_UPD64031A,
.attach_adapter = upd64031a_probe,
.detach_client = upd64031a_detach,
.command = upd64031a_command,
};
static int __init upd64031a_init_module(void)
{
return i2c_add_driver(&i2c_driver);
}
static void __exit upd64031a_exit_module(void)
{
i2c_del_driver(&i2c_driver);
}
module_init(upd64031a_init_module);
module_exit(upd64031a_exit_module);
|
