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 <asm/io.h>
34 #include <asm/uaccess.h>
35
36 MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
37 MODULE_AUTHOR("Pauline Middelink");
38 MODULE_LICENSE("GPL");
39
40 #include <linux/i2c.h>
41 #include <linux/i2c-dev.h>
42
43 #define I2C_NAME(s) (s)->name
44
45 #include <linux/videodev.h>
46 #include <linux/video_decoder.h>
47
48 static int debug = 0;
49 module_param(debug, int, 0);
50 MODULE_PARM_DESC(debug, "Debug level (0-1)");
51
52 #define dprintk(num, format, args...) \
53 do { \
54 if (debug >= num) \
55 printk(format, ##args); \
56 } while (0)
57
58 #define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
59 #define SAA7110_MAX_OUTPUT 0 /* its a decoder only */
60
61 #define I2C_SAA7110 0x9C /* or 0x9E */
62
63 #define SAA7110_NR_REG 0x35
64
65 struct saa7110 {
66 u8 reg[SAA7110_NR_REG];
67
68 int norm;
69 int input;
70 int enable;
71 int bright;
72 int contrast;
73 int hue;
74 int sat;
75
76 wait_queue_head_t wq;
77 };
78
79 /* ----------------------------------------------------------------------- */
80 /* I2C support functions */
81 /* ----------------------------------------------------------------------- */
82
83 static int
84 saa7110_write (struct i2c_client *client,
85 u8 reg,
86 u8 value)
87 {
88 struct saa7110 *decoder = i2c_get_clientdata(client);
89
90 decoder->reg[reg] = value;
91 return i2c_smbus_write_byte_data(client, reg, value);
92 }
93
94 static int
95 saa7110_write_block (struct i2c_client *client,
96 const u8 *data,
97 unsigned int len)
98 {
99 int ret = -1;
100 u8 reg = *data; /* first register to write to */
101
102 /* Sanity check */
103 if (reg + (len - 1) > SAA7110_NR_REG)
104 return ret;
105
106 /* the saa7110 has an autoincrement function, use it if
107 * the adapter understands raw I2C */
108 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
109 struct saa7110 *decoder = i2c_get_clientdata(client);
110 struct i2c_msg msg;
111
112 msg.len = len;
113 msg.buf = (char *) data;
114 msg.addr = client->addr;
115 msg.flags = 0;
116 ret = i2c_transfer(client->adapter, &msg, 1);
117
118 /* Cache the written data */
119 memcpy(decoder->reg + reg, data + 1, len - 1);
120 } else {
121 for (++data, --len; len; len--) {
122 if ((ret = saa7110_write(client, reg++,
123 *data++)) < 0)
124 break;
125 }
126 }
127
128 return ret;
129 }
130
131 static inline int
132 saa7110_read (struct i2c_client *client)
133 {
134 return i2c_smbus_read_byte(client);
135 }
136
137 /* ----------------------------------------------------------------------- */
138 /* SAA7110 functions */
139 /* ----------------------------------------------------------------------- */
140
141 #define FRESP_06H_COMPST 0x03 //0x13
142 #define FRESP_06H_SVIDEO 0x83 //0xC0
143
144
145 static int
146 saa7110_selmux (struct i2c_client *client,
147 int chan)
148 {
149 static const unsigned char modes[9][8] = {
150 /* mode 0 */
151 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
152 0x44, 0x75, 0x16},
153 /* mode 1 */
154 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
155 0x44, 0x75, 0x16},
156 /* mode 2 */
157 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
158 0x60, 0xB5, 0x05},
159 /* mode 3 */
160 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
161 0x60, 0xB5, 0x05},
162 /* mode 4 */
163 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
164 0x60, 0xB5, 0x03},
165 /* mode 5 */
166 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
167 0x60, 0xB5, 0x03},
168 /* mode 6 */
169 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
170 0x44, 0x75, 0x12},
171 /* mode 7 */
172 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
173 0x60, 0xB5, 0x14},
174 /* mode 8 */
175 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
176 0x44, 0x75, 0x21}
177 };
178 struct saa7110 *decoder = i2c_get_clientdata(client);
179 const unsigned char *ptr = modes[chan];
180
181 saa7110_write(client, 0x06, ptr[0]); /* Luminance control */
182 saa7110_write(client, 0x20, ptr[1]); /* Analog Control #1 */
183 saa7110_write(client, 0x21, ptr[2]); /* Analog Control #2 */
184 saa7110_write(client, 0x22, ptr[3]); /* Mixer Control #1 */
185 saa7110_write(client, 0x2C, ptr[4]); /* Mixer Control #2 */
186 saa7110_write(client, 0x30, ptr[5]); /* ADCs gain control */
187 saa7110_write(client, 0x31, ptr[6]); /* Mixer Control #3 */
188 saa7110_write(client, 0x21, ptr[7]); /* Analog Control #2 */
189 decoder->input = chan;
190
191 return 0;
192 }
193
194 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
195 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
196 /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
197 /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
198 /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
199 /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
200 /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
201 /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
202 };
203
204 static int
205 determine_norm (struct i2c_client *client)
206 {
207 struct saa7110 *decoder = i2c_get_clientdata(client);
208 int status;
209
210 /* mode changed, start automatic detection */
211 saa7110_write_block(client, initseq, sizeof(initseq));
212 saa7110_selmux(client, decoder->input);
213 sleep_on_timeout(&decoder->wq, HZ / 4);
214 status = saa7110_read(client);
215 if (status & 0x40) {
216 dprintk(1, KERN_INFO "%s: status=0x%02x (no signal)\n",
217 I2C_NAME(client), status);
218 return decoder->norm; // no change
219 }
220 if ((status & 3) == 0) {
221 saa7110_write(client, 0x06, 0x83);
222 if (status & 0x20) {
223 dprintk(1,
224 KERN_INFO
225 "%s: status=0x%02x (NTSC/no color)\n",
226 I2C_NAME(client), status);
227 //saa7110_write(client,0x2E,0x81);
228 return VIDEO_MODE_NTSC;
229 }
230 dprintk(1, KERN_INFO "%s: status=0x%02x (PAL/no color)\n",
231 I2C_NAME(client), status);
232 //saa7110_write(client,0x2E,0x9A);
233 return VIDEO_MODE_PAL;
234 }
235 //saa7110_write(client,0x06,0x03);
236 if (status & 0x20) { /* 60Hz */
237 dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC)\n",
238 I2C_NAME(client), status);
239 saa7110_write(client, 0x0D, 0x86);
240 saa7110_write(client, 0x0F, 0x50);
241 saa7110_write(client, 0x11, 0x2C);
242 //saa7110_write(client,0x2E,0x81);
243 return VIDEO_MODE_NTSC;
244 }
245
246 /* 50Hz -> PAL/SECAM */
247 saa7110_write(client, 0x0D, 0x86);
248 saa7110_write(client, 0x0F, 0x10);
249 saa7110_write(client, 0x11, 0x59);
250 //saa7110_write(client,0x2E,0x9A);
251
252 sleep_on_timeout(&decoder->wq, HZ / 4);
253
254 status = saa7110_read(client);
255 if ((status & 0x03) == 0x01) {
256 dprintk(1, KERN_INFO "%s: status=0x%02x (SECAM)\n",
257 I2C_NAME(client), status);
258 saa7110_write(client, 0x0D, 0x87);
259 return VIDEO_MODE_SECAM;
260 }
261 dprintk(1, KERN_INFO "%s: status=0x%02x (PAL)\n", I2C_NAME(client),
262 status);
263 return VIDEO_MODE_PAL;
264 }
265
266 static int
267 saa7110_command (struct i2c_client *client,
268 unsigned int cmd,
269 void *arg)
270 {
271 struct saa7110 *decoder = i2c_get_clientdata(client);
272 int v;
273
274 switch (cmd) {
275 case 0:
276 //saa7110_write_block(client, initseq, sizeof(initseq));
277 break;
278
279 case DECODER_GET_CAPABILITIES:
280 {
281 struct video_decoder_capability *dc = arg;
282
283 dc->flags =
284 VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
285 VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
286 dc->inputs = SAA7110_MAX_INPUT;
287 dc->outputs = SAA7110_MAX_OUTPUT;
288 }
289 break;
290
291 case DECODER_GET_STATUS:
292 {
293 int status;
294 int res = 0;
295
296 status = saa7110_read(client);
297 dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n",
298 I2C_NAME(client), status, decoder->norm);
299 if (!(status & 0x40))
300 res |= DECODER_STATUS_GOOD;
301 if (status & 0x03)
302 res |= DECODER_STATUS_COLOR;
303
304 switch (decoder->norm) {
305 case VIDEO_MODE_NTSC:
306 res |= DECODER_STATUS_NTSC;
307 break;
308 case VIDEO_MODE_PAL:
309 res |= DECODER_STATUS_PAL;
310 break;
311 case VIDEO_MODE_SECAM:
312 res |= DECODER_STATUS_SECAM;
313 break;
314 }
315 *(int *) arg = res;
316 }
317 break;
318
319 case DECODER_SET_NORM:
320 v = *(int *) arg;
321 if (decoder->norm != v) {
322 decoder->norm = v;
323 //saa7110_write(client, 0x06, 0x03);
324 switch (v) {
325 case VIDEO_MODE_NTSC:
326 saa7110_write(client, 0x0D, 0x86);
327 saa7110_write(client, 0x0F, 0x50);
328 saa7110_write(client, 0x11, 0x2C);
329 //saa7110_write(client, 0x2E, 0x81);
330 dprintk(1,
331 KERN_INFO "%s: switched to NTSC\n",
332 I2C_NAME(client));
333 break;
334 case VIDEO_MODE_PAL:
335 saa7110_write(client, 0x0D, 0x86);
336 saa7110_write(client, 0x0F, 0x10);
337 saa7110_write(client, 0x11, 0x59);
338 //saa7110_write(client, 0x2E, 0x9A);
339 dprintk(1,
340 KERN_INFO "%s: switched to PAL\n",
341 I2C_NAME(client));
342 break;
343 case VIDEO_MODE_SECAM:
344 saa7110_write(client, 0x0D, 0x87);
345 saa7110_write(client, 0x0F, 0x10);
346 saa7110_write(client, 0x11, 0x59);
347 //saa7110_write(client, 0x2E, 0x9A);
348 dprintk(1,
349 KERN_INFO
350 "%s: switched to SECAM\n",
351 I2C_NAME(client));
352 break;
353 case VIDEO_MODE_AUTO:
354 dprintk(1,
355 KERN_INFO
356 "%s: TV standard detection...\n",
357 I2C_NAME(client));
358 decoder->norm = determine_norm(client);
359 *(int *) arg = decoder->norm;
360 break;
361 default:
362 return -EPERM;
363 }
364 }
365 break;
366
367 case DECODER_SET_INPUT:
368 v = *(int *) arg;
369 if (v < 0 || v > SAA7110_MAX_INPUT) {
370 dprintk(1,
371 KERN_INFO "%s: input=%d not available\n",
372 I2C_NAME(client), v);
373 return -EINVAL;
374 }
375 if (decoder->input != v) {
376 saa7110_selmux(client, v);
377 dprintk(1, KERN_INFO "%s: switched to input=%d\n",
378 I2C_NAME(client), v);
379 }
380 break;
381
382 case DECODER_SET_OUTPUT:
383 v = *(int *) arg;
384 /* not much choice of outputs */
385 if (v != 0)
386 return -EINVAL;
387 break;
388
389 case DECODER_ENABLE_OUTPUT:
390 v = *(int *) arg;
391 if (decoder->enable != v) {
392 decoder->enable = v;
393 saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
394 dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client),
395 v ? "on" : "off");
396 }
397 break;
398
399 case DECODER_SET_PICTURE:
400 {
401 struct video_picture *pic = arg;
402
403 if (decoder->bright != pic->brightness) {
404 /* We want 0 to 255 we get 0-65535 */
405 decoder->bright = pic->brightness;
406 saa7110_write(client, 0x19, decoder->bright >> 8);
407 }
408 if (decoder->contrast != pic->contrast) {
409 /* We want 0 to 127 we get 0-65535 */
410 decoder->contrast = pic->contrast;
411 saa7110_write(client, 0x13,
412 decoder->contrast >> 9);
413 }
414 if (decoder->sat != pic->colour) {
415 /* We want 0 to 127 we get 0-65535 */
416 decoder->sat = pic->colour;
417 saa7110_write(client, 0x12, decoder->sat >> 9);
418 }
419 if (decoder->hue != pic->hue) {
420 /* We want -128 to 127 we get 0-65535 */
421 decoder->hue = pic->hue;
422 saa7110_write(client, 0x07,
423 (decoder->hue >> 8) - 128);
424 }
425 }
426 break;
427
428 case DECODER_DUMP:
429 for (v = 0; v < 0x34; v += 16) {
430 int j;
431 dprintk(1, KERN_INFO "%s: %03x\n", I2C_NAME(client),
432 v);
433 for (j = 0; j < 16; j++) {
434 dprintk(1, KERN_INFO " %02x",
435 decoder->reg[v + j]);
436 }
437 dprintk(1, KERN_INFO "\n");
438 }
439 break;
440
441 default:
442 dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n",
443 cmd);
444 return -EINVAL;
445 }
446 return 0;
447 }
448
449 /* ----------------------------------------------------------------------- */
450
451 /*
452 * Generic i2c probe
453 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
454 */
455 static unsigned short normal_i2c[] = {
456 I2C_SAA7110 >> 1,
457 (I2C_SAA7110 >> 1) + 1,
458 I2C_CLIENT_END
459 };
460 static unsigned short normal_i2c_range[] = { I2C_CLIENT_END };
461
462 static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
463 static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
464 static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
465 static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END };
466 static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END };
467
468 static struct i2c_client_address_data addr_data = {
469 .normal_i2c = normal_i2c,
470 .normal_i2c_range = normal_i2c_range,
471 .probe = probe,
472 .probe_range = probe_range,
473 .ignore = ignore,
474 .ignore_range = ignore_range,
475 .force = force
476 };
477
478 static int saa7110_i2c_id = 0;
479 static struct i2c_driver i2c_driver_saa7110;
480
481 static int
482 saa7110_detect_client (struct i2c_adapter *adapter,
483 int address,
484 int kind)
485 {
486 struct i2c_client *client;
487 struct saa7110 *decoder;
488 int rv;
489
490 dprintk(1,
491 KERN_INFO
492 "saa7110.c: detecting saa7110 client on address 0x%x\n",
493 address << 1);
494
495 /* Check if the adapter supports the needed features */
496 if (!i2c_check_functionality
497 (adapter,
498 I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
499 return 0;
500
501 client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
502 if (client == 0)
503 return -ENOMEM;
504 memset(client, 0, sizeof(struct i2c_client));
505 client->addr = address;
506 client->adapter = adapter;
507 client->driver = &i2c_driver_saa7110;
508 client->flags = I2C_CLIENT_ALLOW_USE;
509 client->id = saa7110_i2c_id++;
510 snprintf(I2C_NAME(client), sizeof(I2C_NAME(client)) - 1,
511 "saa7110[%d]", client->id);
512
513 decoder = kmalloc(sizeof(struct saa7110), GFP_KERNEL);
514 if (decoder == 0) {
515 kfree(client);
516 return -ENOMEM;
517 }
518 memset(decoder, 0, sizeof(struct saa7110));
519 decoder->norm = VIDEO_MODE_PAL;
520 decoder->input = 0;
521 decoder->enable = 1;
522 decoder->bright = 32768;
523 decoder->contrast = 32768;
524 decoder->hue = 32768;
525 decoder->sat = 32768;
526 init_waitqueue_head(&decoder->wq);
527 i2c_set_clientdata(client, decoder);
528
529 rv = i2c_attach_client(client);
530 if (rv) {
531 kfree(client);
532 kfree(decoder);
533 return rv;
534 }
535
536 rv = saa7110_write_block(client, initseq, sizeof(initseq));
537 if (rv < 0)
538 dprintk(1, KERN_ERR "%s_attach: init status %d\n",
539 I2C_NAME(client), rv);
540 else {
541 int ver, status;
542 saa7110_write(client, 0x21, 0x10);
543 saa7110_write(client, 0x0e, 0x18);
544 saa7110_write(client, 0x0D, 0x04);
545 ver = saa7110_read(client);
546 saa7110_write(client, 0x0D, 0x06);
547 //mdelay(150);
548 status = saa7110_read(client);
549 dprintk(1,
550 KERN_INFO
551 "%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n",
552 I2C_NAME(client), ver, client->addr << 1, status);
553 saa7110_write(client, 0x0D, 0x86);
554 saa7110_write(client, 0x0F, 0x10);
555 saa7110_write(client, 0x11, 0x59);
556 //saa7110_write(client, 0x2E, 0x9A);
557 }
558
559 //saa7110_selmux(client,0);
560 //determine_norm(client);
561 /* setup and implicit mode 0 select has been performed */
562
563 return 0;
564 }
565
566 static int
567 saa7110_attach_adapter (struct i2c_adapter *adapter)
568 {
569 dprintk(1,
570 KERN_INFO
571 "saa7110.c: starting probe for adapter %s (0x%x)\n",
572 I2C_NAME(adapter), adapter->id);
573 return i2c_probe(adapter, &addr_data, &saa7110_detect_client);
574 }
575
576 static int
577 saa7110_detach_client (struct i2c_client *client)
578 {
579 struct saa7110 *decoder = i2c_get_clientdata(client);
580 int err;
581
582 err = i2c_detach_client(client);
583 if (err) {
584 return err;
585 }
586
587 kfree(decoder);
588 kfree(client);
589
590 return 0;
591 }
592
593 /* ----------------------------------------------------------------------- */
594
595 static struct i2c_driver i2c_driver_saa7110 = {
596 .owner = THIS_MODULE,
597 .name = "saa7110",
598
599 .id = I2C_DRIVERID_SAA7110,
600 .flags = I2C_DF_NOTIFY,
601
602 .attach_adapter = saa7110_attach_adapter,
603 .detach_client = saa7110_detach_client,
604 .command = saa7110_command,
605 };
606
607 static int __init
608 saa7110_init (void)
609 {
610 return i2c_add_driver(&i2c_driver_saa7110);
611 }
612
613 static void __exit
614 saa7110_exit (void)
615 {
616 i2c_del_driver(&i2c_driver_saa7110);
617 }
618
619 module_init(saa7110_init);
620 module_exit(saa7110_exit);
621
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