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V4L/DVB (6715): ivtv: Remove unnecessary register update
[linux-2.6/verdex.git] / drivers / media / video / saa7110.c
blob061134a7ba9fe7ce69cdf91f6937710a7a459b82
1 /*
2 * saa7110 - Philips SAA7110(A) video decoder driver
3 *
4 * Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
5 *
6 * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
7 * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
8 * - some corrections for Pinnacle Systems Inc. DC10plus card.
9 *
10 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
11 * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/types.h>
31 #include <linux/delay.h>
32 #include <linux/slab.h>
33 #include <linux/wait.h>
34 #include <asm/io.h>
35 #include <asm/uaccess.h>
36
37 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
38 MODULE_AUTHOR("Pauline Middelink");
39 MODULE_LICENSE("GPL");
40
41 #include <linux/i2c.h>
42
43 #define I2C_NAME(s) (s)->name
44
45 #include <linux/videodev.h>
46 #include <media/v4l2-common.h>
47 #include <linux/video_decoder.h>
48
49 static int debug = 0;
50 module_param(debug, int, 0);
51 MODULE_PARM_DESC(debug, "Debug level (0-1)");
52
53 #define dprintk(num, format, args...) \
54 do { \
55 if (debug >= num) \
56 printk(format, ##args); \
57 } while (0)
58
59 #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
60 #define SAA7110_MAX_OUTPUT 0 /* its a decoder only */
61
62 #define I2C_SAA7110 0x9C /* or 0x9E */
63
64 #define SAA7110_NR_REG 0x35
65
66 struct saa7110 {
67 u8 reg[SAA7110_NR_REG];
68
69 int norm;
70 int input;
71 int enable;
72 int bright;
73 int contrast;
74 int hue;
75 int sat;
76
77 wait_queue_head_t wq;
78 };
79
80 /* ----------------------------------------------------------------------- */
81 /* I2C support functions */
82 /* ----------------------------------------------------------------------- */
83
84 static int
85 saa7110_write (struct i2c_client *client,
86 u8 reg,
87 u8 value)
88 {
89 struct saa7110 *decoder = i2c_get_clientdata(client);
90
91 decoder->reg[reg] = value;
92 return i2c_smbus_write_byte_data(client, reg, value);
93 }
94
95 static int
96 saa7110_write_block (struct i2c_client *client,
97 const u8 *data,
98 unsigned int len)
99 {
100 int ret = -1;
101 u8 reg = *data; /* first register to write to */
102
103 /* Sanity check */
104 if (reg + (len - 1) > SAA7110_NR_REG)
105 return ret;
106
107 /* the saa7110 has an autoincrement function, use it if
108 * the adapter understands raw I2C */
109 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
110 struct saa7110 *decoder = i2c_get_clientdata(client);
111
112 ret = i2c_master_send(client, data, len);
113
114 /* Cache the written data */
115 memcpy(decoder->reg + reg, data + 1, len - 1);
116 } else {
117 for (++data, --len; len; len--) {
118 if ((ret = saa7110_write(client, reg++,
119 *data++)) < 0)
120 break;
121 }
122 }
123
124 return ret;
125 }
126
127 static inline int
128 saa7110_read (struct i2c_client *client)
129 {
130 return i2c_smbus_read_byte(client);
131 }
132
133 /* ----------------------------------------------------------------------- */
134 /* SAA7110 functions */
135 /* ----------------------------------------------------------------------- */
136
137 #define FRESP_06H_COMPST 0x03 //0x13
138 #define FRESP_06H_SVIDEO 0x83 //0xC0
139
140
141 static int
142 saa7110_selmux (struct i2c_client *client,
143 int chan)
144 {
145 static const unsigned char modes[9][8] = {
146 /* mode 0 */
147 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
148 0x44, 0x75, 0x16},
149 /* mode 1 */
150 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
151 0x44, 0x75, 0x16},
152 /* mode 2 */
153 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
154 0x60, 0xB5, 0x05},
155 /* mode 3 */
156 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
157 0x60, 0xB5, 0x05},
158 /* mode 4 */
159 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
160 0x60, 0xB5, 0x03},
161 /* mode 5 */
162 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
163 0x60, 0xB5, 0x03},
164 /* mode 6 */
165 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
166 0x44, 0x75, 0x12},
167 /* mode 7 */
168 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
169 0x60, 0xB5, 0x14},
170 /* mode 8 */
171 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
172 0x44, 0x75, 0x21}
173 };
174 struct saa7110 *decoder = i2c_get_clientdata(client);
175 const unsigned char *ptr = modes[chan];
176
177 saa7110_write(client, 0x06, ptr[0]); /* Luminance control */
178 saa7110_write(client, 0x20, ptr[1]); /* Analog Control #1 */
179 saa7110_write(client, 0x21, ptr[2]); /* Analog Control #2 */
180 saa7110_write(client, 0x22, ptr[3]); /* Mixer Control #1 */
181 saa7110_write(client, 0x2C, ptr[4]); /* Mixer Control #2 */
182 saa7110_write(client, 0x30, ptr[5]); /* ADCs gain control */
183 saa7110_write(client, 0x31, ptr[6]); /* Mixer Control #3 */
184 saa7110_write(client, 0x21, ptr[7]); /* Analog Control #2 */
185 decoder->input = chan;
186
187 return 0;
188 }
189
190 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
191 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
192 /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
193 /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
194 /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
195 /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
196 /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
197 /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
198 };
199
200 static int
201 determine_norm (struct i2c_client *client)
202 {
203 DEFINE_WAIT(wait);
204 struct saa7110 *decoder = i2c_get_clientdata(client);
205 int status;
206
207 /* mode changed, start automatic detection */
208 saa7110_write_block(client, initseq, sizeof(initseq));
209 saa7110_selmux(client, decoder->input);
210 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
211 schedule_timeout(msecs_to_jiffies(250));
212 finish_wait(&decoder->wq, &wait);
213 status = saa7110_read(client);
214 if (status & 0x40) {
215 dprintk(1, KERN_INFO "%s: status=0x%02x (no signal)\n",
216 I2C_NAME(client), status);
217 return decoder->norm; // no change
218 }
219 if ((status & 3) == 0) {
220 saa7110_write(client, 0x06, 0x83);
221 if (status & 0x20) {
222 dprintk(1,
223 KERN_INFO
224 "%s: status=0x%02x (NTSC/no color)\n",
225 I2C_NAME(client), status);
226 //saa7110_write(client,0x2E,0x81);
227 return VIDEO_MODE_NTSC;
228 }
229 dprintk(1, KERN_INFO "%s: status=0x%02x (PAL/no color)\n",
230 I2C_NAME(client), status);
231 //saa7110_write(client,0x2E,0x9A);
232 return VIDEO_MODE_PAL;
233 }
234 //saa7110_write(client,0x06,0x03);
235 if (status & 0x20) { /* 60Hz */
236 dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC)\n",
237 I2C_NAME(client), status);
238 saa7110_write(client, 0x0D, 0x86);
239 saa7110_write(client, 0x0F, 0x50);
240 saa7110_write(client, 0x11, 0x2C);
241 //saa7110_write(client,0x2E,0x81);
242 return VIDEO_MODE_NTSC;
243 }
244
245 /* 50Hz -> PAL/SECAM */
246 saa7110_write(client, 0x0D, 0x86);
247 saa7110_write(client, 0x0F, 0x10);
248 saa7110_write(client, 0x11, 0x59);
249 //saa7110_write(client,0x2E,0x9A);
250
251 prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
252 schedule_timeout(msecs_to_jiffies(250));
253 finish_wait(&decoder->wq, &wait);
254
255 status = saa7110_read(client);
256 if ((status & 0x03) == 0x01) {
257 dprintk(1, KERN_INFO "%s: status=0x%02x (SECAM)\n",
258 I2C_NAME(client), status);
259 saa7110_write(client, 0x0D, 0x87);
260 return VIDEO_MODE_SECAM;
261 }
262 dprintk(1, KERN_INFO "%s: status=0x%02x (PAL)\n", I2C_NAME(client),
263 status);
264 return VIDEO_MODE_PAL;
265 }
266
267 static int
268 saa7110_command (struct i2c_client *client,
269 unsigned int cmd,
270 void *arg)
271 {
272 struct saa7110 *decoder = i2c_get_clientdata(client);
273 int v;
274
275 switch (cmd) {
276 case 0:
277 //saa7110_write_block(client, initseq, sizeof(initseq));
278 break;
279
280 case DECODER_GET_CAPABILITIES:
281 {
282 struct video_decoder_capability *dc = arg;
283
284 dc->flags =
285 VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
286 VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
287 dc->inputs = SAA7110_MAX_INPUT;
288 dc->outputs = SAA7110_MAX_OUTPUT;
289 }
290 break;
291
292 case DECODER_GET_STATUS:
293 {
294 int status;
295 int res = 0;
296
297 status = saa7110_read(client);
298 dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n",
299 I2C_NAME(client), status, decoder->norm);
300 if (!(status & 0x40))
301 res |= DECODER_STATUS_GOOD;
302 if (status & 0x03)
303 res |= DECODER_STATUS_COLOR;
304
305 switch (decoder->norm) {
306 case VIDEO_MODE_NTSC:
307 res |= DECODER_STATUS_NTSC;
308 break;
309 case VIDEO_MODE_PAL:
310 res |= DECODER_STATUS_PAL;
311 break;
312 case VIDEO_MODE_SECAM:
313 res |= DECODER_STATUS_SECAM;
314 break;
315 }
316 *(int *) arg = res;
317 }
318 break;
319
320 case DECODER_SET_NORM:
321 v = *(int *) arg;
322 if (decoder->norm != v) {
323 decoder->norm = v;
324 //saa7110_write(client, 0x06, 0x03);
325 switch (v) {
326 case VIDEO_MODE_NTSC:
327 saa7110_write(client, 0x0D, 0x86);
328 saa7110_write(client, 0x0F, 0x50);
329 saa7110_write(client, 0x11, 0x2C);
330 //saa7110_write(client, 0x2E, 0x81);
331 dprintk(1,
332 KERN_INFO "%s: switched to NTSC\n",
333 I2C_NAME(client));
334 break;
335 case VIDEO_MODE_PAL:
336 saa7110_write(client, 0x0D, 0x86);
337 saa7110_write(client, 0x0F, 0x10);
338 saa7110_write(client, 0x11, 0x59);
339 //saa7110_write(client, 0x2E, 0x9A);
340 dprintk(1,
341 KERN_INFO "%s: switched to PAL\n",
342 I2C_NAME(client));
343 break;
344 case VIDEO_MODE_SECAM:
345 saa7110_write(client, 0x0D, 0x87);
346 saa7110_write(client, 0x0F, 0x10);
347 saa7110_write(client, 0x11, 0x59);
348 //saa7110_write(client, 0x2E, 0x9A);
349 dprintk(1,
350 KERN_INFO
351 "%s: switched to SECAM\n",
352 I2C_NAME(client));
353 break;
354 case VIDEO_MODE_AUTO:
355 dprintk(1,
356 KERN_INFO
357 "%s: TV standard detection...\n",
358 I2C_NAME(client));
359 decoder->norm = determine_norm(client);
360 *(int *) arg = decoder->norm;
361 break;
362 default:
363 return -EPERM;
364 }
365 }
366 break;
367
368 case DECODER_SET_INPUT:
369 v = *(int *) arg;
370 if (v < 0 || v > SAA7110_MAX_INPUT) {
371 dprintk(1,
372 KERN_INFO "%s: input=%d not available\n",
373 I2C_NAME(client), v);
374 return -EINVAL;
375 }
376 if (decoder->input != v) {
377 saa7110_selmux(client, v);
378 dprintk(1, KERN_INFO "%s: switched to input=%d\n",
379 I2C_NAME(client), v);
380 }
381 break;
382
383 case DECODER_SET_OUTPUT:
384 v = *(int *) arg;
385 /* not much choice of outputs */
386 if (v != 0)
387 return -EINVAL;
388 break;
389
390 case DECODER_ENABLE_OUTPUT:
391 v = *(int *) arg;
392 if (decoder->enable != v) {
393 decoder->enable = v;
394 saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
395 dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client),
396 v ? "on" : "off");
397 }
398 break;
399
400 case DECODER_SET_PICTURE:
401 {
402 struct video_picture *pic = arg;
403
404 if (decoder->bright != pic->brightness) {
405 /* We want 0 to 255 we get 0-65535 */
406 decoder->bright = pic->brightness;
407 saa7110_write(client, 0x19, decoder->bright >> 8);
408 }
409 if (decoder->contrast != pic->contrast) {
410 /* We want 0 to 127 we get 0-65535 */
411 decoder->contrast = pic->contrast;
412 saa7110_write(client, 0x13,
413 decoder->contrast >> 9);
414 }
415 if (decoder->sat != pic->colour) {
416 /* We want 0 to 127 we get 0-65535 */
417 decoder->sat = pic->colour;
418 saa7110_write(client, 0x12, decoder->sat >> 9);
419 }
420 if (decoder->hue != pic->hue) {
421 /* We want -128 to 127 we get 0-65535 */
422 decoder->hue = pic->hue;
423 saa7110_write(client, 0x07,
424 (decoder->hue >> 8) - 128);
425 }
426 }
427 break;
428
429 case DECODER_DUMP:
430 for (v = 0; v < SAA7110_NR_REG; v += 16) {
431 int j;
432 dprintk(1, KERN_DEBUG "%s: %02x:", I2C_NAME(client),
433 v);
434 for (j = 0; j < 16 && v + j < SAA7110_NR_REG; j++)
435 dprintk(1, " %02x", decoder->reg[v + j]);
436 dprintk(1, "\n");
437 }
438 break;
439
440 default:
441 dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n",
442 cmd);
443 return -EINVAL;
444 }
445 return 0;
446 }
447
448 /* ----------------------------------------------------------------------- */
449
450 /*
451 * Generic i2c probe
452 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
453 */
454 static unsigned short normal_i2c[] = {
455 I2C_SAA7110 >> 1,
456 (I2C_SAA7110 >> 1) + 1,
457 I2C_CLIENT_END
458 };
459
460 static unsigned short ignore = I2C_CLIENT_END;
461
462 static struct i2c_client_address_data addr_data = {
463 .normal_i2c = normal_i2c,
464 .probe = &ignore,
465 .ignore = &ignore,
466 };
467
468 static struct i2c_driver i2c_driver_saa7110;
469
470 static int
471 saa7110_detect_client (struct i2c_adapter *adapter,
472 int address,
473 int kind)
474 {
475 struct i2c_client *client;
476 struct saa7110 *decoder;
477 int rv;
478
479 dprintk(1,
480 KERN_INFO
481 "saa7110.c: detecting saa7110 client on address 0x%x\n",
482 address << 1);
483
484 /* Check if the adapter supports the needed features */
485 if (!i2c_check_functionality
486 (adapter,
487 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
488 return 0;
489
490 client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
491 if (client == 0)
492 return -ENOMEM;
493 client->addr = address;
494 client->adapter = adapter;
495 client->driver = &i2c_driver_saa7110;
496 strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client)));
497
498 decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
499 if (decoder == 0) {
500 kfree(client);
501 return -ENOMEM;
502 }
503 decoder->norm = VIDEO_MODE_PAL;
504 decoder->input = 0;
505 decoder->enable = 1;
506 decoder->bright = 32768;
507 decoder->contrast = 32768;
508 decoder->hue = 32768;
509 decoder->sat = 32768;
510 init_waitqueue_head(&decoder->wq);
511 i2c_set_clientdata(client, decoder);
512
513 rv = i2c_attach_client(client);
514 if (rv) {
515 kfree(client);
516 kfree(decoder);
517 return rv;
518 }
519
520 rv = saa7110_write_block(client, initseq, sizeof(initseq));
521 if (rv < 0)
522 dprintk(1, KERN_ERR "%s_attach: init status %d\n",
523 I2C_NAME(client), rv);
524 else {
525 int ver, status;
526 saa7110_write(client, 0x21, 0x10);
527 saa7110_write(client, 0x0e, 0x18);
528 saa7110_write(client, 0x0D, 0x04);
529 ver = saa7110_read(client);
530 saa7110_write(client, 0x0D, 0x06);
531 //mdelay(150);
532 status = saa7110_read(client);
533 dprintk(1,
534 KERN_INFO
535 "%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n",
536 I2C_NAME(client), ver, client->addr << 1, status);
537 saa7110_write(client, 0x0D, 0x86);
538 saa7110_write(client, 0x0F, 0x10);
539 saa7110_write(client, 0x11, 0x59);
540 //saa7110_write(client, 0x2E, 0x9A);
541 }
542
543 //saa7110_selmux(client,0);
544 //determine_norm(client);
545 /* setup and implicit mode 0 select has been performed */
546
547 return 0;
548 }
549
550 static int
551 saa7110_attach_adapter (struct i2c_adapter *adapter)
552 {
553 dprintk(1,
554 KERN_INFO
555 "saa7110.c: starting probe for adapter %s (0x%x)\n",
556 I2C_NAME(adapter), adapter->id);
557 return i2c_probe(adapter, &addr_data, &saa7110_detect_client);
558 }
559
560 static int
561 saa7110_detach_client (struct i2c_client *client)
562 {
563 struct saa7110 *decoder = i2c_get_clientdata(client);
564 int err;
565
566 err = i2c_detach_client(client);
567 if (err) {
568 return err;
569 }
570
571 kfree(decoder);
572 kfree(client);
573
574 return 0;
575 }
576
577 /* ----------------------------------------------------------------------- */
578
579 static struct i2c_driver i2c_driver_saa7110 = {
580 .driver = {
581 .name = "saa7110",
582 },
583
584 .id = I2C_DRIVERID_SAA7110,
585
586 .attach_adapter = saa7110_attach_adapter,
587 .detach_client = saa7110_detach_client,
588 .command = saa7110_command,
589 };
590
591 static int __init
592 saa7110_init (void)
593 {
594 return i2c_add_driver(&i2c_driver_saa7110);
595 }
596
597 static void __exit
598 saa7110_exit (void)
599 {
600 i2c_del_driver(&i2c_driver_saa7110);
601 }
602
603 module_init(saa7110_init);
604 module_exit(saa7110_exit);
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