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1da177e4 LT |
1 | /* |
2 | * adv7175 - adv7175a video encoder driver version 0.0.3 | |
3 | * | |
4 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> | |
5 | * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> | |
6 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> | |
7 | * - some corrections for Pinnacle Systems Inc. DC10plus card. | |
8 | * | |
9 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> | |
10 | * - moved over to linux>=2.4.x i2c protocol (9/9/2002) | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | #include <linux/module.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/errno.h> | |
31 | #include <linux/fs.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/major.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/mm.h> | |
36 | #include <linux/pci.h> | |
37 | #include <linux/signal.h> | |
38 | #include <asm/io.h> | |
39 | #include <asm/pgtable.h> | |
40 | #include <asm/page.h> | |
41 | #include <linux/sched.h> | |
1da177e4 LT |
42 | #include <linux/types.h> |
43 | ||
44 | #include <linux/videodev.h> | |
45 | #include <asm/uaccess.h> | |
46 | ||
47 | MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver"); | |
48 | MODULE_AUTHOR("Dave Perks"); | |
49 | MODULE_LICENSE("GPL"); | |
50 | ||
51 | #include <linux/i2c.h> | |
52 | #include <linux/i2c-dev.h> | |
53 | ||
54 | #define I2C_NAME(s) (s)->name | |
55 | ||
56 | #include <linux/video_encoder.h> | |
57 | ||
58 | static int debug = 0; | |
59 | module_param(debug, int, 0); | |
60 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
61 | ||
62 | #define dprintk(num, format, args...) \ | |
63 | do { \ | |
64 | if (debug >= num) \ | |
65 | printk(format, ##args); \ | |
66 | } while (0) | |
67 | ||
68 | /* ----------------------------------------------------------------------- */ | |
69 | ||
70 | struct adv7175 { | |
71 | unsigned char reg[128]; | |
72 | ||
73 | int norm; | |
74 | int input; | |
75 | int enable; | |
76 | int bright; | |
77 | int contrast; | |
78 | int hue; | |
79 | int sat; | |
80 | }; | |
81 | ||
82 | #define I2C_ADV7175 0xd4 | |
83 | #define I2C_ADV7176 0x54 | |
84 | ||
85 | static char adv7175_name[] = "adv7175"; | |
86 | static char adv7176_name[] = "adv7176"; | |
87 | ||
88 | static char *inputs[] = { "pass_through", "play_back", "color_bar" }; | |
89 | static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" }; | |
90 | ||
91 | /* ----------------------------------------------------------------------- */ | |
92 | ||
93 | static inline int | |
94 | adv7175_write (struct i2c_client *client, | |
95 | u8 reg, | |
96 | u8 value) | |
97 | { | |
98 | struct adv7175 *encoder = i2c_get_clientdata(client); | |
99 | ||
100 | encoder->reg[reg] = value; | |
101 | return i2c_smbus_write_byte_data(client, reg, value); | |
102 | } | |
103 | ||
104 | static inline int | |
105 | adv7175_read (struct i2c_client *client, | |
106 | u8 reg) | |
107 | { | |
108 | return i2c_smbus_read_byte_data(client, reg); | |
109 | } | |
110 | ||
111 | static int | |
112 | adv7175_write_block (struct i2c_client *client, | |
113 | const u8 *data, | |
114 | unsigned int len) | |
115 | { | |
116 | int ret = -1; | |
117 | u8 reg; | |
118 | ||
119 | /* the adv7175 has an autoincrement function, use it if | |
120 | * the adapter understands raw I2C */ | |
121 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | |
122 | /* do raw I2C, not smbus compatible */ | |
123 | struct adv7175 *encoder = i2c_get_clientdata(client); | |
124 | struct i2c_msg msg; | |
125 | u8 block_data[32]; | |
126 | ||
127 | msg.addr = client->addr; | |
128 | msg.flags = 0; | |
129 | while (len >= 2) { | |
130 | msg.buf = (char *) block_data; | |
131 | msg.len = 0; | |
132 | block_data[msg.len++] = reg = data[0]; | |
133 | do { | |
134 | block_data[msg.len++] = | |
135 | encoder->reg[reg++] = data[1]; | |
136 | len -= 2; | |
137 | data += 2; | |
138 | } while (len >= 2 && data[0] == reg && | |
139 | msg.len < 32); | |
140 | if ((ret = i2c_transfer(client->adapter, | |
141 | &msg, 1)) < 0) | |
142 | break; | |
143 | } | |
144 | } else { | |
145 | /* do some slow I2C emulation kind of thing */ | |
146 | while (len >= 2) { | |
147 | reg = *data++; | |
148 | if ((ret = adv7175_write(client, reg, | |
149 | *data++)) < 0) | |
150 | break; | |
151 | len -= 2; | |
152 | } | |
153 | } | |
154 | ||
155 | return ret; | |
156 | } | |
157 | ||
158 | static void | |
159 | set_subcarrier_freq (struct i2c_client *client, | |
160 | int pass_through) | |
161 | { | |
162 | /* for some reason pass_through NTSC needs | |
163 | * a different sub-carrier freq to remain stable. */ | |
164 | if(pass_through) | |
165 | adv7175_write(client, 0x02, 0x00); | |
166 | else | |
167 | adv7175_write(client, 0x02, 0x55); | |
168 | ||
169 | adv7175_write(client, 0x03, 0x55); | |
170 | adv7175_write(client, 0x04, 0x55); | |
171 | adv7175_write(client, 0x05, 0x25); | |
172 | } | |
173 | ||
174 | #ifdef ENCODER_DUMP | |
175 | static void | |
176 | dump (struct i2c_client *client) | |
177 | { | |
178 | struct adv7175 *encoder = i2c_get_clientdata(client); | |
179 | int i, j; | |
180 | ||
181 | printk(KERN_INFO "%s: registry dump\n", I2C_NAME(client)); | |
182 | for (i = 0; i < 182 / 8; i++) { | |
183 | printk("%s: 0x%02x -", I2C_NAME(client), i * 8); | |
184 | for (j = 0; j < 8; j++) { | |
185 | printk(" 0x%02x", encoder->reg[i * 8 + j]); | |
186 | } | |
187 | printk("\n"); | |
188 | } | |
189 | } | |
190 | #endif | |
191 | ||
192 | /* ----------------------------------------------------------------------- */ | |
193 | // Output filter: S-Video Composite | |
194 | ||
195 | #define MR050 0x11 //0x09 | |
196 | #define MR060 0x14 //0x0c | |
197 | ||
198 | //--------------------------------------------------------------------------- | |
199 | ||
200 | #define TR0MODE 0x46 | |
201 | #define TR0RST 0x80 | |
202 | ||
203 | #define TR1CAPT 0x80 | |
204 | #define TR1PLAY 0x00 | |
205 | ||
206 | static const unsigned char init_common[] = { | |
207 | ||
208 | 0x00, MR050, /* MR0, PAL enabled */ | |
209 | 0x01, 0x00, /* MR1 */ | |
210 | 0x02, 0x0c, /* subc. freq. */ | |
211 | 0x03, 0x8c, /* subc. freq. */ | |
212 | 0x04, 0x79, /* subc. freq. */ | |
213 | 0x05, 0x26, /* subc. freq. */ | |
214 | 0x06, 0x40, /* subc. phase */ | |
215 | ||
216 | 0x07, TR0MODE, /* TR0, 16bit */ | |
217 | 0x08, 0x21, /* */ | |
218 | 0x09, 0x00, /* */ | |
219 | 0x0a, 0x00, /* */ | |
220 | 0x0b, 0x00, /* */ | |
221 | 0x0c, TR1CAPT, /* TR1 */ | |
222 | 0x0d, 0x4f, /* MR2 */ | |
223 | 0x0e, 0x00, /* */ | |
224 | 0x0f, 0x00, /* */ | |
225 | 0x10, 0x00, /* */ | |
226 | 0x11, 0x00, /* */ | |
227 | }; | |
228 | ||
229 | static const unsigned char init_pal[] = { | |
230 | 0x00, MR050, /* MR0, PAL enabled */ | |
231 | 0x01, 0x00, /* MR1 */ | |
232 | 0x02, 0x0c, /* subc. freq. */ | |
233 | 0x03, 0x8c, /* subc. freq. */ | |
234 | 0x04, 0x79, /* subc. freq. */ | |
235 | 0x05, 0x26, /* subc. freq. */ | |
236 | 0x06, 0x40, /* subc. phase */ | |
237 | }; | |
238 | ||
239 | static const unsigned char init_ntsc[] = { | |
240 | 0x00, MR060, /* MR0, NTSC enabled */ | |
241 | 0x01, 0x00, /* MR1 */ | |
242 | 0x02, 0x55, /* subc. freq. */ | |
243 | 0x03, 0x55, /* subc. freq. */ | |
244 | 0x04, 0x55, /* subc. freq. */ | |
245 | 0x05, 0x25, /* subc. freq. */ | |
246 | 0x06, 0x1a, /* subc. phase */ | |
247 | }; | |
248 | ||
249 | static int | |
250 | adv7175_command (struct i2c_client *client, | |
251 | unsigned int cmd, | |
252 | void *arg) | |
253 | { | |
254 | struct adv7175 *encoder = i2c_get_clientdata(client); | |
255 | ||
256 | switch (cmd) { | |
257 | ||
258 | case 0: | |
259 | /* This is just for testing!!! */ | |
260 | adv7175_write_block(client, init_common, | |
261 | sizeof(init_common)); | |
262 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
263 | adv7175_write(client, 0x07, TR0MODE); | |
264 | break; | |
265 | ||
266 | case ENCODER_GET_CAPABILITIES: | |
267 | { | |
268 | struct video_encoder_capability *cap = arg; | |
269 | ||
270 | cap->flags = VIDEO_ENCODER_PAL | | |
271 | VIDEO_ENCODER_NTSC | | |
272 | VIDEO_ENCODER_SECAM; /* well, hacky */ | |
273 | cap->inputs = 2; | |
274 | cap->outputs = 1; | |
275 | } | |
276 | break; | |
277 | ||
278 | case ENCODER_SET_NORM: | |
279 | { | |
280 | int iarg = *(int *) arg; | |
281 | ||
282 | switch (iarg) { | |
283 | ||
284 | case VIDEO_MODE_NTSC: | |
285 | adv7175_write_block(client, init_ntsc, | |
286 | sizeof(init_ntsc)); | |
287 | if (encoder->input == 0) | |
288 | adv7175_write(client, 0x0d, 0x4f); // Enable genlock | |
289 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
290 | adv7175_write(client, 0x07, TR0MODE); | |
291 | break; | |
292 | ||
293 | case VIDEO_MODE_PAL: | |
294 | adv7175_write_block(client, init_pal, | |
295 | sizeof(init_pal)); | |
296 | if (encoder->input == 0) | |
297 | adv7175_write(client, 0x0d, 0x4f); // Enable genlock | |
298 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
299 | adv7175_write(client, 0x07, TR0MODE); | |
300 | break; | |
301 | ||
302 | case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM. | |
303 | /* This is an attempt to convert | |
304 | * SECAM->PAL (typically it does not work | |
305 | * due to genlock: when decoder is in SECAM | |
306 | * and encoder in in PAL the subcarrier can | |
307 | * not be syncronized with horizontal | |
308 | * quency) */ | |
309 | adv7175_write_block(client, init_pal, | |
310 | sizeof(init_pal)); | |
311 | if (encoder->input == 0) | |
312 | adv7175_write(client, 0x0d, 0x49); // Disable genlock | |
313 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
314 | adv7175_write(client, 0x07, TR0MODE); | |
315 | break; | |
316 | default: | |
317 | dprintk(1, KERN_ERR "%s: illegal norm: %d\n", | |
318 | I2C_NAME(client), iarg); | |
319 | return -EINVAL; | |
320 | ||
321 | } | |
322 | dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), | |
323 | norms[iarg]); | |
324 | encoder->norm = iarg; | |
325 | } | |
326 | break; | |
327 | ||
328 | case ENCODER_SET_INPUT: | |
329 | { | |
330 | int iarg = *(int *) arg; | |
331 | ||
332 | /* RJ: *iarg = 0: input is from SAA7110 | |
333 | *iarg = 1: input is from ZR36060 | |
334 | *iarg = 2: color bar */ | |
335 | ||
336 | switch (iarg) { | |
337 | ||
338 | case 0: | |
339 | adv7175_write(client, 0x01, 0x00); | |
340 | ||
341 | if (encoder->norm == VIDEO_MODE_NTSC) | |
342 | set_subcarrier_freq(client, 1); | |
343 | ||
344 | adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */ | |
345 | if (encoder->norm == VIDEO_MODE_SECAM) | |
346 | adv7175_write(client, 0x0d, 0x49); // Disable genlock | |
347 | else | |
348 | adv7175_write(client, 0x0d, 0x4f); // Enable genlock | |
349 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
350 | adv7175_write(client, 0x07, TR0MODE); | |
351 | //udelay(10); | |
352 | break; | |
353 | ||
354 | case 1: | |
355 | adv7175_write(client, 0x01, 0x00); | |
356 | ||
357 | if (encoder->norm == VIDEO_MODE_NTSC) | |
358 | set_subcarrier_freq(client, 0); | |
359 | ||
360 | adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */ | |
361 | adv7175_write(client, 0x0d, 0x49); | |
362 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
363 | adv7175_write(client, 0x07, TR0MODE); | |
364 | //udelay(10); | |
365 | break; | |
366 | ||
367 | case 2: | |
368 | adv7175_write(client, 0x01, 0x80); | |
369 | ||
370 | if (encoder->norm == VIDEO_MODE_NTSC) | |
371 | set_subcarrier_freq(client, 0); | |
372 | ||
373 | adv7175_write(client, 0x0d, 0x49); | |
374 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
375 | adv7175_write(client, 0x07, TR0MODE); | |
376 | //udelay(10); | |
377 | break; | |
378 | ||
379 | default: | |
380 | dprintk(1, KERN_ERR "%s: illegal input: %d\n", | |
381 | I2C_NAME(client), iarg); | |
382 | return -EINVAL; | |
383 | ||
384 | } | |
385 | dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), | |
386 | inputs[iarg]); | |
387 | encoder->input = iarg; | |
388 | } | |
389 | break; | |
390 | ||
391 | case ENCODER_SET_OUTPUT: | |
392 | { | |
393 | int *iarg = arg; | |
394 | ||
395 | /* not much choice of outputs */ | |
396 | if (*iarg != 0) { | |
397 | return -EINVAL; | |
398 | } | |
399 | } | |
400 | break; | |
401 | ||
402 | case ENCODER_ENABLE_OUTPUT: | |
403 | { | |
404 | int *iarg = arg; | |
405 | ||
406 | encoder->enable = !!*iarg; | |
407 | } | |
408 | break; | |
409 | ||
410 | #ifdef ENCODER_DUMP | |
411 | case ENCODER_DUMP: | |
412 | { | |
413 | dump(client); | |
414 | } | |
415 | break; | |
416 | #endif | |
417 | ||
418 | default: | |
419 | return -EINVAL; | |
420 | } | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | /* ----------------------------------------------------------------------- */ | |
426 | ||
427 | /* | |
428 | * Generic i2c probe | |
429 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
430 | */ | |
431 | static unsigned short normal_i2c[] = | |
432 | { I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1, | |
433 | I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1, | |
434 | I2C_CLIENT_END | |
435 | }; | |
1da177e4 | 436 | |
68cc9d0b | 437 | static unsigned short ignore = I2C_CLIENT_END; |
1da177e4 LT |
438 | |
439 | static struct i2c_client_address_data addr_data = { | |
440 | .normal_i2c = normal_i2c, | |
68cc9d0b JD |
441 | .probe = &ignore, |
442 | .ignore = &ignore, | |
1da177e4 LT |
443 | }; |
444 | ||
445 | static struct i2c_driver i2c_driver_adv7175; | |
446 | ||
447 | static int | |
448 | adv7175_detect_client (struct i2c_adapter *adapter, | |
449 | int address, | |
450 | int kind) | |
451 | { | |
452 | int i; | |
453 | struct i2c_client *client; | |
454 | struct adv7175 *encoder; | |
455 | char *dname; | |
456 | ||
457 | dprintk(1, | |
458 | KERN_INFO | |
459 | "adv7175.c: detecting adv7175 client on address 0x%x\n", | |
460 | address << 1); | |
461 | ||
462 | /* Check if the adapter supports the needed features */ | |
463 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
464 | return 0; | |
465 | ||
7408187d | 466 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
1da177e4 LT |
467 | if (client == 0) |
468 | return -ENOMEM; | |
1da177e4 LT |
469 | client->addr = address; |
470 | client->adapter = adapter; | |
471 | client->driver = &i2c_driver_adv7175; | |
1da177e4 LT |
472 | if ((client->addr == I2C_ADV7175 >> 1) || |
473 | (client->addr == (I2C_ADV7175 >> 1) + 1)) { | |
474 | dname = adv7175_name; | |
475 | } else if ((client->addr == I2C_ADV7176 >> 1) || | |
476 | (client->addr == (I2C_ADV7176 >> 1) + 1)) { | |
477 | dname = adv7176_name; | |
478 | } else { | |
479 | /* We should never get here!!! */ | |
480 | kfree(client); | |
481 | return 0; | |
482 | } | |
483 | strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client))); | |
484 | ||
7408187d | 485 | encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL); |
1da177e4 LT |
486 | if (encoder == NULL) { |
487 | kfree(client); | |
488 | return -ENOMEM; | |
489 | } | |
1da177e4 LT |
490 | encoder->norm = VIDEO_MODE_PAL; |
491 | encoder->input = 0; | |
492 | encoder->enable = 1; | |
493 | i2c_set_clientdata(client, encoder); | |
494 | ||
495 | i = i2c_attach_client(client); | |
496 | if (i) { | |
497 | kfree(client); | |
498 | kfree(encoder); | |
499 | return i; | |
500 | } | |
501 | ||
502 | i = adv7175_write_block(client, init_common, sizeof(init_common)); | |
503 | if (i >= 0) { | |
504 | i = adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
505 | i = adv7175_write(client, 0x07, TR0MODE); | |
506 | i = adv7175_read(client, 0x12); | |
507 | dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n", | |
508 | I2C_NAME(client), i & 1, client->addr << 1); | |
509 | } | |
510 | if (i < 0) { | |
511 | dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n", | |
512 | I2C_NAME(client), i); | |
513 | } | |
514 | ||
515 | return 0; | |
516 | } | |
517 | ||
518 | static int | |
519 | adv7175_attach_adapter (struct i2c_adapter *adapter) | |
520 | { | |
521 | dprintk(1, | |
522 | KERN_INFO | |
523 | "adv7175.c: starting probe for adapter %s (0x%x)\n", | |
524 | I2C_NAME(adapter), adapter->id); | |
525 | return i2c_probe(adapter, &addr_data, &adv7175_detect_client); | |
526 | } | |
527 | ||
528 | static int | |
529 | adv7175_detach_client (struct i2c_client *client) | |
530 | { | |
531 | struct adv7175 *encoder = i2c_get_clientdata(client); | |
532 | int err; | |
533 | ||
534 | err = i2c_detach_client(client); | |
535 | if (err) { | |
536 | return err; | |
537 | } | |
538 | ||
539 | kfree(encoder); | |
540 | kfree(client); | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
545 | /* ----------------------------------------------------------------------- */ | |
546 | ||
547 | static struct i2c_driver i2c_driver_adv7175 = { | |
604f28e2 | 548 | .driver = { |
604f28e2 LR |
549 | .name = "adv7175", /* name */ |
550 | }, | |
1da177e4 LT |
551 | |
552 | .id = I2C_DRIVERID_ADV7175, | |
1da177e4 LT |
553 | |
554 | .attach_adapter = adv7175_attach_adapter, | |
555 | .detach_client = adv7175_detach_client, | |
556 | .command = adv7175_command, | |
557 | }; | |
558 | ||
559 | static int __init | |
560 | adv7175_init (void) | |
561 | { | |
562 | return i2c_add_driver(&i2c_driver_adv7175); | |
563 | } | |
564 | ||
565 | static void __exit | |
566 | adv7175_exit (void) | |
567 | { | |
568 | i2c_del_driver(&i2c_driver_adv7175); | |
569 | } | |
570 | ||
571 | module_init(adv7175_init); | |
572 | module_exit(adv7175_exit); |