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[PATCH] W1: w1_netlink: New init/fini netlink callbacks.
[linux-2.6/verdex.git] / drivers / media / video / saa7111.c
blobfe8a5e45396982ca0a1a62ee2ab6571ca4d7ba23
1 /*
2 * saa7111 - Philips SAA7111A video decoder driver version 0.0.3
3 *
4 * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
5 *
6 * Slight changes for video timing and attachment output by
7 * Wolfgang Scherr <scherr@net4you.net>
8 *
9 * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
10 * - moved over to linux>=2.4.x i2c protocol (1/1/2003)
11 *
12 * Changes by Michael Hunold <michael@mihu.de>
13 * - implemented DECODER_SET_GPIO, DECODER_INIT, DECODER_SET_VBI_BYPASS
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/delay.h>
33 #include <linux/errno.h>
34 #include <linux/fs.h>
35 #include <linux/kernel.h>
36 #include <linux/major.h>
37 #include <linux/slab.h>
38 #include <linux/mm.h>
39 #include <linux/pci.h>
40 #include <linux/signal.h>
41 #include <asm/io.h>
42 #include <asm/pgtable.h>
43 #include <asm/page.h>
44 #include <linux/sched.h>
45 #include <linux/types.h>
46
47 #include <linux/videodev.h>
48 #include <asm/uaccess.h>
49
50 MODULE_DESCRIPTION("Philips SAA7111 video decoder driver");
51 MODULE_AUTHOR("Dave Perks");
52 MODULE_LICENSE("GPL");
53
54 #include <linux/i2c.h>
55 #include <linux/i2c-dev.h>
56
57 #define I2C_NAME(s) (s)->name
58
59 #include <linux/video_decoder.h>
60
61 static int debug = 0;
62 module_param(debug, int, 0644);
63 MODULE_PARM_DESC(debug, "Debug level (0-1)");
64
65 #define dprintk(num, format, args...) \
66 do { \
67 if (debug >= num) \
68 printk(format, ##args); \
69 } while (0)
70
71 /* ----------------------------------------------------------------------- */
72
73 struct saa7111 {
74 unsigned char reg[32];
75
76 int norm;
77 int input;
78 int enable;
79 int bright;
80 int contrast;
81 int hue;
82 int sat;
83 };
84
85 #define I2C_SAA7111 0x48
86
87 /* ----------------------------------------------------------------------- */
88
89 static inline int
90 saa7111_write (struct i2c_client *client,
91 u8 reg,
92 u8 value)
93 {
94 struct saa7111 *decoder = i2c_get_clientdata(client);
95
96 decoder->reg[reg] = value;
97 return i2c_smbus_write_byte_data(client, reg, value);
98 }
99
100 static int
101 saa7111_write_block (struct i2c_client *client,
102 const u8 *data,
103 unsigned int len)
104 {
105 int ret = -1;
106 u8 reg;
107
108 /* the saa7111 has an autoincrement function, use it if
109 * the adapter understands raw I2C */
110 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
111 /* do raw I2C, not smbus compatible */
112 struct saa7111 *decoder = i2c_get_clientdata(client);
113 struct i2c_msg msg;
114 u8 block_data[32];
115
116 msg.addr = client->addr;
117 msg.flags = 0;
118 while (len >= 2) {
119 msg.buf = (char *) block_data;
120 msg.len = 0;
121 block_data[msg.len++] = reg = data[0];
122 do {
123 block_data[msg.len++] =
124 decoder->reg[reg++] = data[1];
125 len -= 2;
126 data += 2;
127 } while (len >= 2 && data[0] == reg &&
128 msg.len < 32);
129 if ((ret = i2c_transfer(client->adapter,
130 &msg, 1)) < 0)
131 break;
132 }
133 } else {
134 /* do some slow I2C emulation kind of thing */
135 while (len >= 2) {
136 reg = *data++;
137 if ((ret = saa7111_write(client, reg,
138 *data++)) < 0)
139 break;
140 len -= 2;
141 }
142 }
143
144 return ret;
145 }
146
147 static int
148 saa7111_init_decoder (struct i2c_client *client,
149 struct video_decoder_init *init)
150 {
151 return saa7111_write_block(client, init->data, init->len);
152 }
153
154 static inline int
155 saa7111_read (struct i2c_client *client,
156 u8 reg)
157 {
158 return i2c_smbus_read_byte_data(client, reg);
159 }
160
161 /* ----------------------------------------------------------------------- */
162
163 static const unsigned char saa7111_i2c_init[] = {
164 0x00, 0x00, /* 00 - ID byte */
165 0x01, 0x00, /* 01 - reserved */
166
167 /*front end */
168 0x02, 0xd0, /* 02 - FUSE=3, GUDL=2, MODE=0 */
169 0x03, 0x23, /* 03 - HLNRS=0, VBSL=1, WPOFF=0,
170 * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */
171 0x04, 0x00, /* 04 - GAI1=256 */
172 0x05, 0x00, /* 05 - GAI2=256 */
173
174 /* decoder */
175 0x06, 0xf3, /* 06 - HSB at 13(50Hz) / 17(60Hz)
176 * pixels after end of last line */
177 /*0x07, 0x13, * 07 - HSS at 113(50Hz) / 117(60Hz) pixels
178 * after end of last line */
179 0x07, 0xe8, /* 07 - HSS seems to be needed to
180 * work with NTSC, too */
181 0x08, 0xc8, /* 08 - AUFD=1, FSEL=1, EXFIL=0,
182 * VTRC=1, HPLL=0, VNOI=0 */
183 0x09, 0x01, /* 09 - BYPS=0, PREF=0, BPSS=0,
184 * VBLB=0, UPTCV=0, APER=1 */
185 0x0a, 0x80, /* 0a - BRIG=128 */
186 0x0b, 0x47, /* 0b - CONT=1.109 */
187 0x0c, 0x40, /* 0c - SATN=1.0 */
188 0x0d, 0x00, /* 0d - HUE=0 */
189 0x0e, 0x01, /* 0e - CDTO=0, CSTD=0, DCCF=0,
190 * FCTC=0, CHBW=1 */
191 0x0f, 0x00, /* 0f - reserved */
192 0x10, 0x48, /* 10 - OFTS=1, HDEL=0, VRLN=1, YDEL=0 */
193 0x11, 0x1c, /* 11 - GPSW=0, CM99=0, FECO=0, COMPO=1,
194 * OEYC=1, OEHV=1, VIPB=0, COLO=0 */
195 0x12, 0x00, /* 12 - output control 2 */
196 0x13, 0x00, /* 13 - output control 3 */
197 0x14, 0x00, /* 14 - reserved */
198 0x15, 0x00, /* 15 - VBI */
199 0x16, 0x00, /* 16 - VBI */
200 0x17, 0x00, /* 17 - VBI */
201 };
202
203 static int
204 saa7111_command (struct i2c_client *client,
205 unsigned int cmd,
206 void *arg)
207 {
208 struct saa7111 *decoder = i2c_get_clientdata(client);
209
210 switch (cmd) {
211
212 case 0:
213 case DECODER_INIT:
214 {
215 struct video_decoder_init *init = arg;
216 if (NULL != init)
217 return saa7111_init_decoder(client, init);
218 else {
219 struct video_decoder_init vdi;
220 vdi.data = saa7111_i2c_init;
221 vdi.len = sizeof(saa7111_i2c_init);
222 return saa7111_init_decoder(client, &vdi);
223 }
224 }
225
226 case DECODER_DUMP:
227 {
228 int i;
229
230 for (i = 0; i < 32; i += 16) {
231 int j;
232
233 printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
234 for (j = 0; j < 16; ++j) {
235 printk(" %02x",
236 saa7111_read(client, i + j));
237 }
238 printk("\n");
239 }
240 }
241 break;
242
243 case DECODER_GET_CAPABILITIES:
244 {
245 struct video_decoder_capability *cap = arg;
246
247 cap->flags = VIDEO_DECODER_PAL |
248 VIDEO_DECODER_NTSC |
249 VIDEO_DECODER_SECAM |
250 VIDEO_DECODER_AUTO |
251 VIDEO_DECODER_CCIR;
252 cap->inputs = 8;
253 cap->outputs = 1;
254 }
255 break;
256
257 case DECODER_GET_STATUS:
258 {
259 int *iarg = arg;
260 int status;
261 int res;
262
263 status = saa7111_read(client, 0x1f);
264 dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
265 status);
266 res = 0;
267 if ((status & (1 << 6)) == 0) {
268 res |= DECODER_STATUS_GOOD;
269 }
270 switch (decoder->norm) {
271 case VIDEO_MODE_NTSC:
272 res |= DECODER_STATUS_NTSC;
273 break;
274 case VIDEO_MODE_PAL:
275 res |= DECODER_STATUS_PAL;
276 break;
277 case VIDEO_MODE_SECAM:
278 res |= DECODER_STATUS_SECAM;
279 break;
280 default:
281 case VIDEO_MODE_AUTO:
282 if ((status & (1 << 5)) != 0) {
283 res |= DECODER_STATUS_NTSC;
284 } else {
285 res |= DECODER_STATUS_PAL;
286 }
287 break;
288 }
289 if ((status & (1 << 0)) != 0) {
290 res |= DECODER_STATUS_COLOR;
291 }
292 *iarg = res;
293 }
294 break;
295
296 case DECODER_SET_GPIO:
297 {
298 int *iarg = arg;
299 if (0 != *iarg) {
300 saa7111_write(client, 0x11,
301 (decoder->reg[0x11] | 0x80));
302 } else {
303 saa7111_write(client, 0x11,
304 (decoder->reg[0x11] & 0x7f));
305 }
306 break;
307 }
308
309 case DECODER_SET_VBI_BYPASS:
310 {
311 int *iarg = arg;
312 if (0 != *iarg) {
313 saa7111_write(client, 0x13,
314 (decoder->reg[0x13] & 0xf0) | 0x0a);
315 } else {
316 saa7111_write(client, 0x13,
317 (decoder->reg[0x13] & 0xf0));
318 }
319 break;
320 }
321
322 case DECODER_SET_NORM:
323 {
324 int *iarg = arg;
325
326 switch (*iarg) {
327
328 case VIDEO_MODE_NTSC:
329 saa7111_write(client, 0x08,
330 (decoder->reg[0x08] & 0x3f) | 0x40);
331 saa7111_write(client, 0x0e,
332 (decoder->reg[0x0e] & 0x8f));
333 break;
334
335 case VIDEO_MODE_PAL:
336 saa7111_write(client, 0x08,
337 (decoder->reg[0x08] & 0x3f) | 0x00);
338 saa7111_write(client, 0x0e,
339 (decoder->reg[0x0e] & 0x8f));
340 break;
341
342 case VIDEO_MODE_SECAM:
343 saa7111_write(client, 0x08,
344 (decoder->reg[0x08] & 0x3f) | 0x00);
345 saa7111_write(client, 0x0e,
346 (decoder->reg[0x0e] & 0x8f) | 0x50);
347 break;
348
349 case VIDEO_MODE_AUTO:
350 saa7111_write(client, 0x08,
351 (decoder->reg[0x08] & 0x3f) | 0x80);
352 saa7111_write(client, 0x0e,
353 (decoder->reg[0x0e] & 0x8f));
354 break;
355
356 default:
357 return -EINVAL;
358
359 }
360 decoder->norm = *iarg;
361 }
362 break;
363
364 case DECODER_SET_INPUT:
365 {
366 int *iarg = arg;
367
368 if (*iarg < 0 || *iarg > 7) {
369 return -EINVAL;
370 }
371
372 if (decoder->input != *iarg) {
373 decoder->input = *iarg;
374 /* select mode */
375 saa7111_write(client, 0x02,
376 (decoder->
377 reg[0x02] & 0xf8) | decoder->input);
378 /* bypass chrominance trap for modes 4..7 */
379 saa7111_write(client, 0x09,
380 (decoder->
381 reg[0x09] & 0x7f) | ((decoder->
382 input >
383 3) ? 0x80 :
384 0));
385 }
386 }
387 break;
388
389 case DECODER_SET_OUTPUT:
390 {
391 int *iarg = arg;
392
393 /* not much choice of outputs */
394 if (*iarg != 0) {
395 return -EINVAL;
396 }
397 }
398 break;
399
400 case DECODER_ENABLE_OUTPUT:
401 {
402 int *iarg = arg;
403 int enable = (*iarg != 0);
404
405 if (decoder->enable != enable) {
406 decoder->enable = enable;
407
408 /* RJ: If output should be disabled (for
409 * playing videos), we also need a open PLL.
410 * The input is set to 0 (where no input
411 * source is connected), although this
412 * is not necessary.
413 *
414 * If output should be enabled, we have to
415 * reverse the above.
416 */
417
418 if (decoder->enable) {
419 saa7111_write(client, 0x02,
420 (decoder->
421 reg[0x02] & 0xf8) |
422 decoder->input);
423 saa7111_write(client, 0x08,
424 (decoder->reg[0x08] & 0xfb));
425 saa7111_write(client, 0x11,
426 (decoder->
427 reg[0x11] & 0xf3) | 0x0c);
428 } else {
429 saa7111_write(client, 0x02,
430 (decoder->reg[0x02] & 0xf8));
431 saa7111_write(client, 0x08,
432 (decoder->
433 reg[0x08] & 0xfb) | 0x04);
434 saa7111_write(client, 0x11,
435 (decoder->reg[0x11] & 0xf3));
436 }
437 }
438 }
439 break;
440
441 case DECODER_SET_PICTURE:
442 {
443 struct video_picture *pic = arg;
444
445 if (decoder->bright != pic->brightness) {
446 /* We want 0 to 255 we get 0-65535 */
447 decoder->bright = pic->brightness;
448 saa7111_write(client, 0x0a, decoder->bright >> 8);
449 }
450 if (decoder->contrast != pic->contrast) {
451 /* We want 0 to 127 we get 0-65535 */
452 decoder->contrast = pic->contrast;
453 saa7111_write(client, 0x0b,
454 decoder->contrast >> 9);
455 }
456 if (decoder->sat != pic->colour) {
457 /* We want 0 to 127 we get 0-65535 */
458 decoder->sat = pic->colour;
459 saa7111_write(client, 0x0c, decoder->sat >> 9);
460 }
461 if (decoder->hue != pic->hue) {
462 /* We want -128 to 127 we get 0-65535 */
463 decoder->hue = pic->hue;
464 saa7111_write(client, 0x0d,
465 (decoder->hue - 32768) >> 8);
466 }
467 }
468 break;
469
470 default:
471 return -EINVAL;
472 }
473
474 return 0;
475 }
476
477 /* ----------------------------------------------------------------------- */
478
479 /*
480 * Generic i2c probe
481 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
482 */
483 static unsigned short normal_i2c[] = { I2C_SAA7111 >> 1, I2C_CLIENT_END };
484
485 static unsigned short ignore = I2C_CLIENT_END;
486
487 static struct i2c_client_address_data addr_data = {
488 .normal_i2c = normal_i2c,
489 .probe = &ignore,
490 .ignore = &ignore,
491 };
492
493 static struct i2c_driver i2c_driver_saa7111;
494
495 static int
496 saa7111_detect_client (struct i2c_adapter *adapter,
497 int address,
498 int kind)
499 {
500 int i;
501 struct i2c_client *client;
502 struct saa7111 *decoder;
503 struct video_decoder_init vdi;
504
505 dprintk(1,
506 KERN_INFO
507 "saa7111.c: detecting saa7111 client on address 0x%x\n",
508 address << 1);
509
510 /* Check if the adapter supports the needed features */
511 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
512 return 0;
513
514 client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
515 if (client == 0)
516 return -ENOMEM;
517 memset(client, 0, sizeof(struct i2c_client));
518 client->addr = address;
519 client->adapter = adapter;
520 client->driver = &i2c_driver_saa7111;
521 client->flags = I2C_CLIENT_ALLOW_USE;
522 strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client)));
523
524 decoder = kmalloc(sizeof(struct saa7111), GFP_KERNEL);
525 if (decoder == NULL) {
526 kfree(client);
527 return -ENOMEM;
528 }
529 memset(decoder, 0, sizeof(struct saa7111));
530 decoder->norm = VIDEO_MODE_NTSC;
531 decoder->input = 0;
532 decoder->enable = 1;
533 decoder->bright = 32768;
534 decoder->contrast = 32768;
535 decoder->hue = 32768;
536 decoder->sat = 32768;
537 i2c_set_clientdata(client, decoder);
538
539 i = i2c_attach_client(client);
540 if (i) {
541 kfree(client);
542 kfree(decoder);
543 return i;
544 }
545
546 vdi.data = saa7111_i2c_init;
547 vdi.len = sizeof(saa7111_i2c_init);
548 i = saa7111_init_decoder(client, &vdi);
549 if (i < 0) {
550 dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
551 I2C_NAME(client), i);
552 } else {
553 dprintk(1,
554 KERN_INFO
555 "%s_attach: chip version %x at address 0x%x\n",
556 I2C_NAME(client), saa7111_read(client, 0x00) >> 4,
557 client->addr << 1);
558 }
559
560 return 0;
561 }
562
563 static int
564 saa7111_attach_adapter (struct i2c_adapter *adapter)
565 {
566 dprintk(1,
567 KERN_INFO
568 "saa7111.c: starting probe for adapter %s (0x%x)\n",
569 I2C_NAME(adapter), adapter->id);
570 return i2c_probe(adapter, &addr_data, &saa7111_detect_client);
571 }
572
573 static int
574 saa7111_detach_client (struct i2c_client *client)
575 {
576 struct saa7111 *decoder = i2c_get_clientdata(client);
577 int err;
578
579 err = i2c_detach_client(client);
580 if (err) {
581 return err;
582 }
583
584 kfree(decoder);
585 kfree(client);
586
587 return 0;
588 }
589
590 /* ----------------------------------------------------------------------- */
591
592 static struct i2c_driver i2c_driver_saa7111 = {
593 .owner = THIS_MODULE,
594 .name = "saa7111",
595
596 .id = I2C_DRIVERID_SAA7111A,
597 .flags = I2C_DF_NOTIFY,
598
599 .attach_adapter = saa7111_attach_adapter,
600 .detach_client = saa7111_detach_client,
601 .command = saa7111_command,
602 };
603
604 static int __init
605 saa7111_init (void)
606 {
607 return i2c_add_driver(&i2c_driver_saa7111);
608 }
609
610 static void __exit
611 saa7111_exit (void)
612 {
613 i2c_del_driver(&i2c_driver_saa7111);
614 }
615
616 module_init(saa7111_init);
617 module_exit(saa7111_exit);
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