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d56410e0 | 1 | /* |
1da177e4 LT |
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> | |
1da177e4 | 36 | #include <linux/signal.h> |
18f3fa1e MCC |
37 | #include <linux/types.h> |
38 | #include <linux/i2c.h> | |
1da177e4 LT |
39 | #include <asm/io.h> |
40 | #include <asm/pgtable.h> | |
41 | #include <asm/page.h> | |
18f3fa1e | 42 | #include <asm/uaccess.h> |
1da177e4 LT |
43 | |
44 | #include <linux/videodev.h> | |
18f3fa1e | 45 | #include <linux/video_encoder.h> |
1da177e4 LT |
46 | |
47 | MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver"); | |
48 | MODULE_AUTHOR("Dave Perks"); | |
49 | MODULE_LICENSE("GPL"); | |
50 | ||
1da177e4 LT |
51 | |
52 | #define I2C_NAME(s) (s)->name | |
53 | ||
1da177e4 | 54 | |
ff699e6b | 55 | static int debug; |
1da177e4 LT |
56 | module_param(debug, int, 0); |
57 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
58 | ||
59 | #define dprintk(num, format, args...) \ | |
60 | do { \ | |
61 | if (debug >= num) \ | |
62 | printk(format, ##args); \ | |
63 | } while (0) | |
64 | ||
65 | /* ----------------------------------------------------------------------- */ | |
66 | ||
67 | struct adv7175 { | |
1da177e4 LT |
68 | int norm; |
69 | int input; | |
70 | int enable; | |
71 | int bright; | |
72 | int contrast; | |
73 | int hue; | |
74 | int sat; | |
75 | }; | |
76 | ||
77 | #define I2C_ADV7175 0xd4 | |
78 | #define I2C_ADV7176 0x54 | |
79 | ||
80 | static char adv7175_name[] = "adv7175"; | |
81 | static char adv7176_name[] = "adv7176"; | |
82 | ||
83 | static char *inputs[] = { "pass_through", "play_back", "color_bar" }; | |
84 | static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" }; | |
85 | ||
86 | /* ----------------------------------------------------------------------- */ | |
87 | ||
88 | static inline int | |
89 | adv7175_write (struct i2c_client *client, | |
90 | u8 reg, | |
91 | u8 value) | |
92 | { | |
1da177e4 LT |
93 | return i2c_smbus_write_byte_data(client, reg, value); |
94 | } | |
95 | ||
96 | static inline int | |
97 | adv7175_read (struct i2c_client *client, | |
98 | u8 reg) | |
99 | { | |
100 | return i2c_smbus_read_byte_data(client, reg); | |
101 | } | |
102 | ||
103 | static int | |
104 | adv7175_write_block (struct i2c_client *client, | |
105 | const u8 *data, | |
106 | unsigned int len) | |
107 | { | |
108 | int ret = -1; | |
109 | u8 reg; | |
110 | ||
111 | /* the adv7175 has an autoincrement function, use it if | |
112 | * the adapter understands raw I2C */ | |
113 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { | |
114 | /* do raw I2C, not smbus compatible */ | |
1da177e4 | 115 | u8 block_data[32]; |
9aa45e34 | 116 | int block_len; |
1da177e4 | 117 | |
1da177e4 | 118 | while (len >= 2) { |
9aa45e34 JD |
119 | block_len = 0; |
120 | block_data[block_len++] = reg = data[0]; | |
1da177e4 | 121 | do { |
9aa45e34 | 122 | block_data[block_len++] = data[1]; |
2467a670 | 123 | reg++; |
1da177e4 LT |
124 | len -= 2; |
125 | data += 2; | |
126 | } while (len >= 2 && data[0] == reg && | |
9aa45e34 JD |
127 | block_len < 32); |
128 | if ((ret = i2c_master_send(client, block_data, | |
129 | block_len)) < 0) | |
1da177e4 LT |
130 | break; |
131 | } | |
132 | } else { | |
133 | /* do some slow I2C emulation kind of thing */ | |
134 | while (len >= 2) { | |
135 | reg = *data++; | |
136 | if ((ret = adv7175_write(client, reg, | |
137 | *data++)) < 0) | |
138 | break; | |
139 | len -= 2; | |
140 | } | |
141 | } | |
142 | ||
143 | return ret; | |
144 | } | |
145 | ||
146 | static void | |
147 | set_subcarrier_freq (struct i2c_client *client, | |
148 | int pass_through) | |
149 | { | |
150 | /* for some reason pass_through NTSC needs | |
151 | * a different sub-carrier freq to remain stable. */ | |
152 | if(pass_through) | |
153 | adv7175_write(client, 0x02, 0x00); | |
154 | else | |
155 | adv7175_write(client, 0x02, 0x55); | |
156 | ||
157 | adv7175_write(client, 0x03, 0x55); | |
158 | adv7175_write(client, 0x04, 0x55); | |
159 | adv7175_write(client, 0x05, 0x25); | |
160 | } | |
161 | ||
1da177e4 LT |
162 | /* ----------------------------------------------------------------------- */ |
163 | // Output filter: S-Video Composite | |
164 | ||
165 | #define MR050 0x11 //0x09 | |
166 | #define MR060 0x14 //0x0c | |
167 | ||
168 | //--------------------------------------------------------------------------- | |
169 | ||
170 | #define TR0MODE 0x46 | |
171 | #define TR0RST 0x80 | |
172 | ||
173 | #define TR1CAPT 0x80 | |
174 | #define TR1PLAY 0x00 | |
175 | ||
176 | static const unsigned char init_common[] = { | |
177 | ||
178 | 0x00, MR050, /* MR0, PAL enabled */ | |
179 | 0x01, 0x00, /* MR1 */ | |
180 | 0x02, 0x0c, /* subc. freq. */ | |
181 | 0x03, 0x8c, /* subc. freq. */ | |
182 | 0x04, 0x79, /* subc. freq. */ | |
183 | 0x05, 0x26, /* subc. freq. */ | |
184 | 0x06, 0x40, /* subc. phase */ | |
185 | ||
186 | 0x07, TR0MODE, /* TR0, 16bit */ | |
187 | 0x08, 0x21, /* */ | |
188 | 0x09, 0x00, /* */ | |
189 | 0x0a, 0x00, /* */ | |
190 | 0x0b, 0x00, /* */ | |
191 | 0x0c, TR1CAPT, /* TR1 */ | |
192 | 0x0d, 0x4f, /* MR2 */ | |
193 | 0x0e, 0x00, /* */ | |
194 | 0x0f, 0x00, /* */ | |
195 | 0x10, 0x00, /* */ | |
196 | 0x11, 0x00, /* */ | |
197 | }; | |
198 | ||
199 | static const unsigned char init_pal[] = { | |
200 | 0x00, MR050, /* MR0, PAL enabled */ | |
201 | 0x01, 0x00, /* MR1 */ | |
202 | 0x02, 0x0c, /* subc. freq. */ | |
203 | 0x03, 0x8c, /* subc. freq. */ | |
204 | 0x04, 0x79, /* subc. freq. */ | |
205 | 0x05, 0x26, /* subc. freq. */ | |
206 | 0x06, 0x40, /* subc. phase */ | |
207 | }; | |
208 | ||
209 | static const unsigned char init_ntsc[] = { | |
210 | 0x00, MR060, /* MR0, NTSC enabled */ | |
211 | 0x01, 0x00, /* MR1 */ | |
212 | 0x02, 0x55, /* subc. freq. */ | |
213 | 0x03, 0x55, /* subc. freq. */ | |
214 | 0x04, 0x55, /* subc. freq. */ | |
215 | 0x05, 0x25, /* subc. freq. */ | |
216 | 0x06, 0x1a, /* subc. phase */ | |
217 | }; | |
218 | ||
219 | static int | |
220 | adv7175_command (struct i2c_client *client, | |
221 | unsigned int cmd, | |
222 | void *arg) | |
223 | { | |
224 | struct adv7175 *encoder = i2c_get_clientdata(client); | |
225 | ||
226 | switch (cmd) { | |
227 | ||
228 | case 0: | |
229 | /* This is just for testing!!! */ | |
230 | adv7175_write_block(client, init_common, | |
231 | sizeof(init_common)); | |
232 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
233 | adv7175_write(client, 0x07, TR0MODE); | |
d56410e0 | 234 | break; |
1da177e4 LT |
235 | |
236 | case ENCODER_GET_CAPABILITIES: | |
237 | { | |
238 | struct video_encoder_capability *cap = arg; | |
239 | ||
240 | cap->flags = VIDEO_ENCODER_PAL | | |
241 | VIDEO_ENCODER_NTSC | | |
242 | VIDEO_ENCODER_SECAM; /* well, hacky */ | |
243 | cap->inputs = 2; | |
244 | cap->outputs = 1; | |
245 | } | |
246 | break; | |
247 | ||
248 | case ENCODER_SET_NORM: | |
249 | { | |
250 | int iarg = *(int *) arg; | |
251 | ||
252 | switch (iarg) { | |
253 | ||
254 | case VIDEO_MODE_NTSC: | |
255 | adv7175_write_block(client, init_ntsc, | |
256 | sizeof(init_ntsc)); | |
257 | if (encoder->input == 0) | |
258 | adv7175_write(client, 0x0d, 0x4f); // Enable genlock | |
259 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
260 | adv7175_write(client, 0x07, TR0MODE); | |
261 | break; | |
262 | ||
263 | case VIDEO_MODE_PAL: | |
264 | adv7175_write_block(client, init_pal, | |
265 | sizeof(init_pal)); | |
266 | if (encoder->input == 0) | |
267 | adv7175_write(client, 0x0d, 0x4f); // Enable genlock | |
268 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
269 | adv7175_write(client, 0x07, TR0MODE); | |
270 | break; | |
271 | ||
272 | case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM. | |
273 | /* This is an attempt to convert | |
274 | * SECAM->PAL (typically it does not work | |
275 | * due to genlock: when decoder is in SECAM | |
276 | * and encoder in in PAL the subcarrier can | |
277 | * not be syncronized with horizontal | |
278 | * quency) */ | |
279 | adv7175_write_block(client, init_pal, | |
280 | sizeof(init_pal)); | |
281 | if (encoder->input == 0) | |
282 | adv7175_write(client, 0x0d, 0x49); // Disable genlock | |
283 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
284 | adv7175_write(client, 0x07, TR0MODE); | |
285 | break; | |
286 | default: | |
287 | dprintk(1, KERN_ERR "%s: illegal norm: %d\n", | |
288 | I2C_NAME(client), iarg); | |
289 | return -EINVAL; | |
290 | ||
291 | } | |
292 | dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), | |
293 | norms[iarg]); | |
294 | encoder->norm = iarg; | |
295 | } | |
296 | break; | |
297 | ||
298 | case ENCODER_SET_INPUT: | |
299 | { | |
300 | int iarg = *(int *) arg; | |
301 | ||
302 | /* RJ: *iarg = 0: input is from SAA7110 | |
303 | *iarg = 1: input is from ZR36060 | |
304 | *iarg = 2: color bar */ | |
305 | ||
306 | switch (iarg) { | |
307 | ||
308 | case 0: | |
309 | adv7175_write(client, 0x01, 0x00); | |
310 | ||
311 | if (encoder->norm == VIDEO_MODE_NTSC) | |
312 | set_subcarrier_freq(client, 1); | |
313 | ||
314 | adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */ | |
315 | if (encoder->norm == VIDEO_MODE_SECAM) | |
316 | adv7175_write(client, 0x0d, 0x49); // Disable genlock | |
317 | else | |
318 | adv7175_write(client, 0x0d, 0x4f); // Enable genlock | |
319 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
320 | adv7175_write(client, 0x07, TR0MODE); | |
321 | //udelay(10); | |
322 | break; | |
323 | ||
324 | case 1: | |
325 | adv7175_write(client, 0x01, 0x00); | |
326 | ||
327 | if (encoder->norm == VIDEO_MODE_NTSC) | |
328 | set_subcarrier_freq(client, 0); | |
329 | ||
330 | adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */ | |
331 | adv7175_write(client, 0x0d, 0x49); | |
332 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
333 | adv7175_write(client, 0x07, TR0MODE); | |
334 | //udelay(10); | |
335 | break; | |
336 | ||
337 | case 2: | |
338 | adv7175_write(client, 0x01, 0x80); | |
339 | ||
340 | if (encoder->norm == VIDEO_MODE_NTSC) | |
341 | set_subcarrier_freq(client, 0); | |
342 | ||
343 | adv7175_write(client, 0x0d, 0x49); | |
344 | adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
345 | adv7175_write(client, 0x07, TR0MODE); | |
346 | //udelay(10); | |
347 | break; | |
348 | ||
349 | default: | |
350 | dprintk(1, KERN_ERR "%s: illegal input: %d\n", | |
351 | I2C_NAME(client), iarg); | |
352 | return -EINVAL; | |
353 | ||
354 | } | |
355 | dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), | |
356 | inputs[iarg]); | |
357 | encoder->input = iarg; | |
358 | } | |
359 | break; | |
360 | ||
361 | case ENCODER_SET_OUTPUT: | |
362 | { | |
363 | int *iarg = arg; | |
364 | ||
365 | /* not much choice of outputs */ | |
366 | if (*iarg != 0) { | |
367 | return -EINVAL; | |
368 | } | |
369 | } | |
370 | break; | |
371 | ||
372 | case ENCODER_ENABLE_OUTPUT: | |
373 | { | |
374 | int *iarg = arg; | |
375 | ||
376 | encoder->enable = !!*iarg; | |
377 | } | |
378 | break; | |
379 | ||
1da177e4 LT |
380 | default: |
381 | return -EINVAL; | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
387 | /* ----------------------------------------------------------------------- */ | |
388 | ||
389 | /* | |
390 | * Generic i2c probe | |
391 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
392 | */ | |
393 | static unsigned short normal_i2c[] = | |
394 | { I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1, | |
395 | I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1, | |
396 | I2C_CLIENT_END | |
397 | }; | |
1da177e4 | 398 | |
68cc9d0b | 399 | static unsigned short ignore = I2C_CLIENT_END; |
d56410e0 | 400 | |
1da177e4 LT |
401 | static struct i2c_client_address_data addr_data = { |
402 | .normal_i2c = normal_i2c, | |
68cc9d0b JD |
403 | .probe = &ignore, |
404 | .ignore = &ignore, | |
1da177e4 LT |
405 | }; |
406 | ||
407 | static struct i2c_driver i2c_driver_adv7175; | |
408 | ||
409 | static int | |
410 | adv7175_detect_client (struct i2c_adapter *adapter, | |
411 | int address, | |
412 | int kind) | |
413 | { | |
414 | int i; | |
415 | struct i2c_client *client; | |
416 | struct adv7175 *encoder; | |
417 | char *dname; | |
418 | ||
419 | dprintk(1, | |
420 | KERN_INFO | |
421 | "adv7175.c: detecting adv7175 client on address 0x%x\n", | |
422 | address << 1); | |
423 | ||
424 | /* Check if the adapter supports the needed features */ | |
425 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
426 | return 0; | |
427 | ||
7408187d | 428 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
5fa1247a | 429 | if (!client) |
1da177e4 | 430 | return -ENOMEM; |
1da177e4 LT |
431 | client->addr = address; |
432 | client->adapter = adapter; | |
433 | client->driver = &i2c_driver_adv7175; | |
1da177e4 LT |
434 | if ((client->addr == I2C_ADV7175 >> 1) || |
435 | (client->addr == (I2C_ADV7175 >> 1) + 1)) { | |
436 | dname = adv7175_name; | |
437 | } else if ((client->addr == I2C_ADV7176 >> 1) || | |
438 | (client->addr == (I2C_ADV7176 >> 1) + 1)) { | |
439 | dname = adv7176_name; | |
440 | } else { | |
441 | /* We should never get here!!! */ | |
442 | kfree(client); | |
443 | return 0; | |
444 | } | |
445 | strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client))); | |
446 | ||
7408187d | 447 | encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL); |
1da177e4 LT |
448 | if (encoder == NULL) { |
449 | kfree(client); | |
450 | return -ENOMEM; | |
451 | } | |
1da177e4 LT |
452 | encoder->norm = VIDEO_MODE_PAL; |
453 | encoder->input = 0; | |
454 | encoder->enable = 1; | |
455 | i2c_set_clientdata(client, encoder); | |
456 | ||
457 | i = i2c_attach_client(client); | |
458 | if (i) { | |
459 | kfree(client); | |
460 | kfree(encoder); | |
461 | return i; | |
462 | } | |
463 | ||
464 | i = adv7175_write_block(client, init_common, sizeof(init_common)); | |
465 | if (i >= 0) { | |
466 | i = adv7175_write(client, 0x07, TR0MODE | TR0RST); | |
467 | i = adv7175_write(client, 0x07, TR0MODE); | |
468 | i = adv7175_read(client, 0x12); | |
469 | dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n", | |
470 | I2C_NAME(client), i & 1, client->addr << 1); | |
471 | } | |
472 | if (i < 0) { | |
473 | dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n", | |
474 | I2C_NAME(client), i); | |
475 | } | |
476 | ||
477 | return 0; | |
478 | } | |
479 | ||
480 | static int | |
481 | adv7175_attach_adapter (struct i2c_adapter *adapter) | |
482 | { | |
483 | dprintk(1, | |
484 | KERN_INFO | |
485 | "adv7175.c: starting probe for adapter %s (0x%x)\n", | |
486 | I2C_NAME(adapter), adapter->id); | |
487 | return i2c_probe(adapter, &addr_data, &adv7175_detect_client); | |
488 | } | |
489 | ||
490 | static int | |
491 | adv7175_detach_client (struct i2c_client *client) | |
492 | { | |
493 | struct adv7175 *encoder = i2c_get_clientdata(client); | |
494 | int err; | |
495 | ||
496 | err = i2c_detach_client(client); | |
497 | if (err) { | |
498 | return err; | |
499 | } | |
500 | ||
501 | kfree(encoder); | |
502 | kfree(client); | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | /* ----------------------------------------------------------------------- */ | |
508 | ||
509 | static struct i2c_driver i2c_driver_adv7175 = { | |
604f28e2 | 510 | .driver = { |
604f28e2 LR |
511 | .name = "adv7175", /* name */ |
512 | }, | |
1da177e4 LT |
513 | |
514 | .id = I2C_DRIVERID_ADV7175, | |
1da177e4 LT |
515 | |
516 | .attach_adapter = adv7175_attach_adapter, | |
517 | .detach_client = adv7175_detach_client, | |
518 | .command = adv7175_command, | |
519 | }; | |
520 | ||
521 | static int __init | |
522 | adv7175_init (void) | |
523 | { | |
524 | return i2c_add_driver(&i2c_driver_adv7175); | |
525 | } | |
526 | ||
527 | static void __exit | |
528 | adv7175_exit (void) | |
529 | { | |
530 | i2c_del_driver(&i2c_driver_adv7175); | |
531 | } | |
532 | ||
533 | module_init(adv7175_init); | |
534 | module_exit(adv7175_exit); |