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
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
|
/*
* saa7185 - Philips SAA7185B video encoder driver version 0.0.3
*
* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
*
* Slight changes for video timing and attachment output by
* Wolfgang Scherr <scherr@net4you.net>
*
* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
* - moved over to linux>=2.4.x i2c protocol (1/1/2003)
*
* 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/types.h>
#include <linux/slab.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>
MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
MODULE_AUTHOR("Dave Perks");
MODULE_LICENSE("GPL");
static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
/* ----------------------------------------------------------------------- */
struct saa7185 {
struct v4l2_subdev sd;
unsigned char reg[128];
v4l2_std_id norm;
};
static inline struct saa7185 *to_saa7185(struct v4l2_subdev *sd)
{
return container_of(sd, struct saa7185, sd);
}
/* ----------------------------------------------------------------------- */
static inline int saa7185_read(struct v4l2_subdev *sd)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return i2c_smbus_read_byte(client);
}
static int saa7185_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct saa7185 *encoder = to_saa7185(sd);
v4l2_dbg(1, debug, sd, "%02x set to %02x\n", reg, value);
encoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
static int saa7185_write_block(struct v4l2_subdev *sd,
const u8 *data, unsigned int len)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct saa7185 *encoder = to_saa7185(sd);
int ret = -1;
u8 reg;
/* the adv7175 has an autoincrement function, use it if
* the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
/* do raw I2C, not smbus compatible */
u8 block_data[32];
int block_len;
while (len >= 2) {
block_len = 0;
block_data[block_len++] = reg = data[0];
do {
block_data[block_len++] =
encoder->reg[reg++] = data[1];
len -= 2;
data += 2;
} while (len >= 2 && data[0] == reg && block_len < 32);
ret = i2c_master_send(client, block_data, block_len);
if (ret < 0)
break;
}
} else {
/* do some slow I2C emulation kind of thing */
while (len >= 2) {
reg = *data++;
ret = saa7185_write(sd, reg, *data++);
if (ret < 0)
break;
len -= 2;
}
}
return ret;
}
/* ----------------------------------------------------------------------- */
static const unsigned char init_common[] = {
0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1,
* YUV2C=1, MY2C=1, MUV2C=1 */
0x42, 0x6b, /* OVLY0=107 */
0x43, 0x00, /* OVLU0=0 white */
0x44, 0x00, /* OVLV0=0 */
0x45, 0x22, /* OVLY1=34 */
0x46, 0xac, /* OVLU1=172 yellow */
0x47, 0x0e, /* OVLV1=14 */
0x48, 0x03, /* OVLY2=3 */
0x49, 0x1d, /* OVLU2=29 cyan */
0x4a, 0xac, /* OVLV2=172 */
0x4b, 0xf0, /* OVLY3=240 */
0x4c, 0xc8, /* OVLU3=200 green */
0x4d, 0xb9, /* OVLV3=185 */
0x4e, 0xd4, /* OVLY4=212 */
0x4f, 0x38, /* OVLU4=56 magenta */
0x50, 0x47, /* OVLV4=71 */
0x51, 0xc1, /* OVLY5=193 */
0x52, 0xe3, /* OVLU5=227 red */
0x53, 0x54, /* OVLV5=84 */
0x54, 0xa3, /* OVLY6=163 */
0x55, 0x54, /* OVLU6=84 blue */
0x56, 0xf2, /* OVLV6=242 */
0x57, 0x90, /* OVLY7=144 */
0x58, 0x00, /* OVLU7=0 black */
0x59, 0x00, /* OVLV7=0 */
0x5a, 0x00, /* CHPS=0 */
0x5b, 0x76, /* GAINU=118 */
0x5c, 0xa5, /* GAINV=165 */
0x5d, 0x3c, /* BLCKL=60 */
0x5e, 0x3a, /* BLNNL=58 */
0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
0x60, 0x00, /* NULL */
/* 0x61 - 0x66 set according to norm */
0x67, 0x00, /* 0 : caption 1st byte odd field */
0x68, 0x00, /* 0 : caption 2nd byte odd field */
0x69, 0x00, /* 0 : caption 1st byte even field */
0x6a, 0x00, /* 0 : caption 2nd byte even field */
0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
* CBLF=0, ORCV2=0, PRCV2=0 */
0x6d, 0x00, /* SRCM1=0, CCEN=0 */
0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at
* least for PAL */
0x6f, 0x00, /* HTRIG upper bits */
0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
/* The following should not be needed */
0x71, 0x15, /* BMRQ=0x115 */
0x72, 0x90, /* EMRQ=0x690 */
0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
0x74, 0x00, /* NULL */
0x75, 0x00, /* NULL */
0x76, 0x00, /* NULL */
0x77, 0x15, /* BRCV=0x115 */
0x78, 0x90, /* ERCV=0x690 */
0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
/* Field length controls */
0x7a, 0x70, /* FLC=0 */
/* The following should not be needed if SBLN = 1 */
0x7b, 0x16, /* FAL=22 */
0x7c, 0x35, /* LAL=244 */
0x7d, 0x20, /* LAL=244, FAL=22 */
};
static const unsigned char init_pal[] = {
0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1,
* YGS=1, INPI=0, DOWN=0 */
0x62, 0xc8, /* DECTYP=1, BSTA=72 */
0x63, 0xcb, /* FSC0 */
0x64, 0x8a, /* FSC1 */
0x65, 0x09, /* FSC2 */
0x66, 0x2a, /* FSC3 */
};
static const unsigned char init_ntsc[] = {
0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1,
* YGS=1, INPI=0, DOWN=0 */
0x62, 0xe6, /* DECTYP=1, BSTA=102 */
0x63, 0x1f, /* FSC0 */
0x64, 0x7c, /* FSC1 */
0x65, 0xf0, /* FSC2 */
0x66, 0x21, /* FSC3 */
};
static int saa7185_init(struct v4l2_subdev *sd, u32 val)
{
struct saa7185 *encoder = to_saa7185(sd);
saa7185_write_block(sd, init_common, sizeof(init_common));
if (encoder->norm & V4L2_STD_NTSC)
saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
else
saa7185_write_block(sd, init_pal, sizeof(init_pal));
return 0;
}
static int saa7185_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct saa7185 *encoder = to_saa7185(sd);
if (std & V4L2_STD_NTSC)
saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
else if (std & V4L2_STD_PAL)
saa7185_write_block(sd, init_pal, sizeof(init_pal));
else
return -EINVAL;
encoder->norm = std;
return 0;
}
static int saa7185_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct saa7185 *encoder = to_saa7185(sd);
/* RJ: input = 0: input is from SA7111
input = 1: input is from ZR36060 */
switch (input) {
case 0:
/* turn off colorbar */
saa7185_write(sd, 0x3a, 0x0f);
/* Switch RTCE to 1 */
saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08);
saa7185_write(sd, 0x6e, 0x01);
break;
case 1:
/* turn off colorbar */
saa7185_write(sd, 0x3a, 0x0f);
/* Switch RTCE to 0 */
saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x00);
/* SW: a slight sync problem... */
saa7185_write(sd, 0x6e, 0x00);
break;
case 2:
/* turn on colorbar */
saa7185_write(sd, 0x3a, 0x8f);
/* Switch RTCE to 0 */
saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08);
/* SW: a slight sync problem... */
saa7185_write(sd, 0x6e, 0x01);
break;
default:
return -EINVAL;
}
return 0;
}
static int saa7185_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7185, 0);
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_subdev_core_ops saa7185_core_ops = {
.g_chip_ident = saa7185_g_chip_ident,
.init = saa7185_init,
};
static const struct v4l2_subdev_video_ops saa7185_video_ops = {
.s_std_output = saa7185_s_std_output,
.s_routing = saa7185_s_routing,
};
static const struct v4l2_subdev_ops saa7185_ops = {
.core = &saa7185_core_ops,
.video = &saa7185_video_ops,
};
/* ----------------------------------------------------------------------- */
static int saa7185_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int i;
struct saa7185 *encoder;
struct v4l2_subdev *sd;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
if (encoder == NULL)
return -ENOMEM;
encoder->norm = V4L2_STD_NTSC;
sd = &encoder->sd;
v4l2_i2c_subdev_init(sd, client, &saa7185_ops);
i = saa7185_write_block(sd, init_common, sizeof(init_common));
if (i >= 0)
i = saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
if (i < 0)
v4l2_dbg(1, debug, sd, "init error %d\n", i);
else
v4l2_dbg(1, debug, sd, "revision 0x%x\n",
saa7185_read(sd) >> 5);
return 0;
}
static int saa7185_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct saa7185 *encoder = to_saa7185(sd);
v4l2_device_unregister_subdev(sd);
/* SW: output off is active */
saa7185_write(sd, 0x61, (encoder->reg[0x61]) | 0x40);
kfree(encoder);
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct i2c_device_id saa7185_id[] = {
{ "saa7185", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, saa7185_id);
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "saa7185",
.probe = saa7185_probe,
.remove = saa7185_remove,
.id_table = saa7185_id,
};
|
