e116bdbed310945a3cb51f0975bac25e6776c0c7
[linux-2.6.git] / drivers / media / video / saa7110.c
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 #include <linux/i2c-dev.h>
43
44 #define I2C_NAME(s) (s)->name
45
46 #include <linux/videodev.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                 struct i2c_msg msg;
112
113                 msg.len = len;
114                 msg.buf = (char *) data;
115                 msg.addr = client->addr;
116                 msg.flags = 0;
117                 ret = i2c_transfer(client->adapter, &msg, 1);
118
119                 /* Cache the written data */
120                 memcpy(decoder->reg + reg, data + 1, len - 1);
121         } else {
122                 for (++data, --len; len; len--) {
123                         if ((ret = saa7110_write(client, reg++,
124                                                  *data++)) < 0)
125                                 break;
126                 }
127         }
128
129         return ret;
130 }
131
132 static inline int
133 saa7110_read (struct i2c_client *client)
134 {
135         return i2c_smbus_read_byte(client);
136 }
137
138 /* ----------------------------------------------------------------------- */
139 /* SAA7110 functions                                                       */
140 /* ----------------------------------------------------------------------- */
141
142 #define FRESP_06H_COMPST 0x03   //0x13
143 #define FRESP_06H_SVIDEO 0x83   //0xC0
144
145
146 static int
147 saa7110_selmux (struct i2c_client *client,
148                 int                chan)
149 {
150         static const unsigned char modes[9][8] = {
151                 /* mode 0 */
152                 {FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
153                               0x44, 0x75, 0x16},
154                 /* mode 1 */
155                 {FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
156                               0x44, 0x75, 0x16},
157                 /* mode 2 */
158                 {FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
159                               0x60, 0xB5, 0x05},
160                 /* mode 3 */
161                 {FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
162                               0x60, 0xB5, 0x05},
163                 /* mode 4 */
164                 {FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
165                               0x60, 0xB5, 0x03},
166                 /* mode 5 */
167                 {FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
168                               0x60, 0xB5, 0x03},
169                 /* mode 6 */
170                 {FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
171                               0x44, 0x75, 0x12},
172                 /* mode 7 */
173                 {FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
174                               0x60, 0xB5, 0x14},
175                 /* mode 8 */
176                 {FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
177                               0x44, 0x75, 0x21}
178         };
179         struct saa7110 *decoder = i2c_get_clientdata(client);
180         const unsigned char *ptr = modes[chan];
181
182         saa7110_write(client, 0x06, ptr[0]);    /* Luminance control    */
183         saa7110_write(client, 0x20, ptr[1]);    /* Analog Control #1    */
184         saa7110_write(client, 0x21, ptr[2]);    /* Analog Control #2    */
185         saa7110_write(client, 0x22, ptr[3]);    /* Mixer Control #1     */
186         saa7110_write(client, 0x2C, ptr[4]);    /* Mixer Control #2     */
187         saa7110_write(client, 0x30, ptr[5]);    /* ADCs gain control    */
188         saa7110_write(client, 0x31, ptr[6]);    /* Mixer Control #3     */
189         saa7110_write(client, 0x21, ptr[7]);    /* Analog Control #2    */
190         decoder->input = chan;
191
192         return 0;
193 }
194
195 static const unsigned char initseq[1 + SAA7110_NR_REG] = {
196         0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
197         /* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
198         /* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
199         /* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
200         /* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
201         /* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
202         /* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
203 };
204
205 static int
206 determine_norm (struct i2c_client *client)
207 {
208         DEFINE_WAIT(wait);
209         struct saa7110 *decoder = i2c_get_clientdata(client);
210         int status;
211
212         /* mode changed, start automatic detection */
213         saa7110_write_block(client, initseq, sizeof(initseq));
214         saa7110_selmux(client, decoder->input);
215         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
216         schedule_timeout(HZ/4);
217         finish_wait(&decoder->wq, &wait);
218         status = saa7110_read(client);
219         if (status & 0x40) {
220                 dprintk(1, KERN_INFO "%s: status=0x%02x (no signal)\n",
221                         I2C_NAME(client), status);
222                 return decoder->norm;   // no change
223         }
224         if ((status & 3) == 0) {
225                 saa7110_write(client, 0x06, 0x83);
226                 if (status & 0x20) {
227                         dprintk(1,
228                                 KERN_INFO
229                                 "%s: status=0x%02x (NTSC/no color)\n",
230                                 I2C_NAME(client), status);
231                         //saa7110_write(client,0x2E,0x81);
232                         return VIDEO_MODE_NTSC;
233                 }
234                 dprintk(1, KERN_INFO "%s: status=0x%02x (PAL/no color)\n",
235                         I2C_NAME(client), status);
236                 //saa7110_write(client,0x2E,0x9A);
237                 return VIDEO_MODE_PAL;
238         }
239         //saa7110_write(client,0x06,0x03);
240         if (status & 0x20) {    /* 60Hz */
241                 dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC)\n",
242                         I2C_NAME(client), status);
243                 saa7110_write(client, 0x0D, 0x86);
244                 saa7110_write(client, 0x0F, 0x50);
245                 saa7110_write(client, 0x11, 0x2C);
246                 //saa7110_write(client,0x2E,0x81);
247                 return VIDEO_MODE_NTSC;
248         }
249
250         /* 50Hz -> PAL/SECAM */
251         saa7110_write(client, 0x0D, 0x86);
252         saa7110_write(client, 0x0F, 0x10);
253         saa7110_write(client, 0x11, 0x59);
254         //saa7110_write(client,0x2E,0x9A);
255
256         prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
257         schedule_timeout(HZ/4);
258         finish_wait(&decoder->wq, &wait);
259
260         status = saa7110_read(client);
261         if ((status & 0x03) == 0x01) {
262                 dprintk(1, KERN_INFO "%s: status=0x%02x (SECAM)\n",
263                         I2C_NAME(client), status);
264                 saa7110_write(client, 0x0D, 0x87);
265                 return VIDEO_MODE_SECAM;
266         }
267         dprintk(1, KERN_INFO "%s: status=0x%02x (PAL)\n", I2C_NAME(client),
268                 status);
269         return VIDEO_MODE_PAL;
270 }
271
272 static int
273 saa7110_command (struct i2c_client *client,
274                  unsigned int       cmd,
275                  void              *arg)
276 {
277         struct saa7110 *decoder = i2c_get_clientdata(client);
278         int v;
279
280         switch (cmd) {
281         case 0:
282                 //saa7110_write_block(client, initseq, sizeof(initseq));
283                 break;
284
285         case DECODER_GET_CAPABILITIES:
286         {
287                 struct video_decoder_capability *dc = arg;
288
289                 dc->flags =
290                     VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
291                     VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
292                 dc->inputs = SAA7110_MAX_INPUT;
293                 dc->outputs = SAA7110_MAX_OUTPUT;
294         }
295                 break;
296
297         case DECODER_GET_STATUS:
298         {
299                 int status;
300                 int res = 0;
301
302                 status = saa7110_read(client);
303                 dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n",
304                         I2C_NAME(client), status, decoder->norm);
305                 if (!(status & 0x40))
306                         res |= DECODER_STATUS_GOOD;
307                 if (status & 0x03)
308                         res |= DECODER_STATUS_COLOR;
309
310                 switch (decoder->norm) {
311                 case VIDEO_MODE_NTSC:
312                         res |= DECODER_STATUS_NTSC;
313                         break;
314                 case VIDEO_MODE_PAL:
315                         res |= DECODER_STATUS_PAL;
316                         break;
317                 case VIDEO_MODE_SECAM:
318                         res |= DECODER_STATUS_SECAM;
319                         break;
320                 }
321                 *(int *) arg = res;
322         }
323                 break;
324
325         case DECODER_SET_NORM:
326                 v = *(int *) arg;
327                 if (decoder->norm != v) {
328                         decoder->norm = v;
329                         //saa7110_write(client, 0x06, 0x03);
330                         switch (v) {
331                         case VIDEO_MODE_NTSC:
332                                 saa7110_write(client, 0x0D, 0x86);
333                                 saa7110_write(client, 0x0F, 0x50);
334                                 saa7110_write(client, 0x11, 0x2C);
335                                 //saa7110_write(client, 0x2E, 0x81);
336                                 dprintk(1,
337                                         KERN_INFO "%s: switched to NTSC\n",
338                                         I2C_NAME(client));
339                                 break;
340                         case VIDEO_MODE_PAL:
341                                 saa7110_write(client, 0x0D, 0x86);
342                                 saa7110_write(client, 0x0F, 0x10);
343                                 saa7110_write(client, 0x11, 0x59);
344                                 //saa7110_write(client, 0x2E, 0x9A);
345                                 dprintk(1,
346                                         KERN_INFO "%s: switched to PAL\n",
347                                         I2C_NAME(client));
348                                 break;
349                         case VIDEO_MODE_SECAM:
350                                 saa7110_write(client, 0x0D, 0x87);
351                                 saa7110_write(client, 0x0F, 0x10);
352                                 saa7110_write(client, 0x11, 0x59);
353                                 //saa7110_write(client, 0x2E, 0x9A);
354                                 dprintk(1,
355                                         KERN_INFO
356                                         "%s: switched to SECAM\n",
357                                         I2C_NAME(client));
358                                 break;
359                         case VIDEO_MODE_AUTO:
360                                 dprintk(1,
361                                         KERN_INFO
362                                         "%s: TV standard detection...\n",
363                                         I2C_NAME(client));
364                                 decoder->norm = determine_norm(client);
365                                 *(int *) arg = decoder->norm;
366                                 break;
367                         default:
368                                 return -EPERM;
369                         }
370                 }
371                 break;
372
373         case DECODER_SET_INPUT:
374                 v = *(int *) arg;
375                 if (v < 0 || v > SAA7110_MAX_INPUT) {
376                         dprintk(1,
377                                 KERN_INFO "%s: input=%d not available\n",
378                                 I2C_NAME(client), v);
379                         return -EINVAL;
380                 }
381                 if (decoder->input != v) {
382                         saa7110_selmux(client, v);
383                         dprintk(1, KERN_INFO "%s: switched to input=%d\n",
384                                 I2C_NAME(client), v);
385                 }
386                 break;
387
388         case DECODER_SET_OUTPUT:
389                 v = *(int *) arg;
390                 /* not much choice of outputs */
391                 if (v != 0)
392                         return -EINVAL;
393                 break;
394
395         case DECODER_ENABLE_OUTPUT:
396                 v = *(int *) arg;
397                 if (decoder->enable != v) {
398                         decoder->enable = v;
399                         saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
400                         dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client),
401                                 v ? "on" : "off");
402                 }
403                 break;
404
405         case DECODER_SET_PICTURE:
406         {
407                 struct video_picture *pic = arg;
408
409                 if (decoder->bright != pic->brightness) {
410                         /* We want 0 to 255 we get 0-65535 */
411                         decoder->bright = pic->brightness;
412                         saa7110_write(client, 0x19, decoder->bright >> 8);
413                 }
414                 if (decoder->contrast != pic->contrast) {
415                         /* We want 0 to 127 we get 0-65535 */
416                         decoder->contrast = pic->contrast;
417                         saa7110_write(client, 0x13,
418                                       decoder->contrast >> 9);
419                 }
420                 if (decoder->sat != pic->colour) {
421                         /* We want 0 to 127 we get 0-65535 */
422                         decoder->sat = pic->colour;
423                         saa7110_write(client, 0x12, decoder->sat >> 9);
424                 }
425                 if (decoder->hue != pic->hue) {
426                         /* We want -128 to 127 we get 0-65535 */
427                         decoder->hue = pic->hue;
428                         saa7110_write(client, 0x07,
429                                       (decoder->hue >> 8) - 128);
430                 }
431         }
432                 break;
433
434         case DECODER_DUMP:
435                 for (v = 0; v < 0x34; v += 16) {
436                         int j;
437                         dprintk(1, KERN_INFO "%s: %03x\n", I2C_NAME(client),
438                                 v);
439                         for (j = 0; j < 16; j++) {
440                                 dprintk(1, KERN_INFO " %02x",
441                                         decoder->reg[v + j]);
442                         }
443                         dprintk(1, KERN_INFO "\n");
444                 }
445                 break;
446
447         default:
448                 dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n",
449                         cmd);
450                 return -EINVAL;
451         }
452         return 0;
453 }
454
455 /* ----------------------------------------------------------------------- */
456
457 /*
458  * Generic i2c probe
459  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
460  */
461 static unsigned short normal_i2c[] = {
462         I2C_SAA7110 >> 1,
463         (I2C_SAA7110 >> 1) + 1,
464         I2C_CLIENT_END
465 };
466
467 static unsigned short ignore = I2C_CLIENT_END;
468                                                                                 
469 static struct i2c_client_address_data addr_data = {
470         .normal_i2c             = normal_i2c,
471         .probe                  = &ignore,
472         .ignore                 = &ignore,
473 };
474
475 static struct i2c_driver i2c_driver_saa7110;
476
477 static int
478 saa7110_detect_client (struct i2c_adapter *adapter,
479                        int                 address,
480                        int                 kind)
481 {
482         struct i2c_client *client;
483         struct saa7110 *decoder;
484         int rv;
485
486         dprintk(1,
487                 KERN_INFO
488                 "saa7110.c: detecting saa7110 client on address 0x%x\n",
489                 address << 1);
490
491         /* Check if the adapter supports the needed features */
492         if (!i2c_check_functionality
493             (adapter,
494              I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
495                 return 0;
496
497         client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
498         if (client == 0)
499                 return -ENOMEM;
500         memset(client, 0, sizeof(struct i2c_client));
501         client->addr = address;
502         client->adapter = adapter;
503         client->driver = &i2c_driver_saa7110;
504         client->flags = I2C_CLIENT_ALLOW_USE;
505         strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client)));
506
507         decoder = kmalloc(sizeof(struct saa7110), GFP_KERNEL);
508         if (decoder == 0) {
509                 kfree(client);
510                 return -ENOMEM;
511         }
512         memset(decoder, 0, sizeof(struct saa7110));
513         decoder->norm = VIDEO_MODE_PAL;
514         decoder->input = 0;
515         decoder->enable = 1;
516         decoder->bright = 32768;
517         decoder->contrast = 32768;
518         decoder->hue = 32768;
519         decoder->sat = 32768;
520         init_waitqueue_head(&decoder->wq);
521         i2c_set_clientdata(client, decoder);
522
523         rv = i2c_attach_client(client);
524         if (rv) {
525                 kfree(client);
526                 kfree(decoder);
527                 return rv;
528         }
529
530         rv = saa7110_write_block(client, initseq, sizeof(initseq));
531         if (rv < 0)
532                 dprintk(1, KERN_ERR "%s_attach: init status %d\n",
533                         I2C_NAME(client), rv);
534         else {
535                 int ver, status;
536                 saa7110_write(client, 0x21, 0x10);
537                 saa7110_write(client, 0x0e, 0x18);
538                 saa7110_write(client, 0x0D, 0x04);
539                 ver = saa7110_read(client);
540                 saa7110_write(client, 0x0D, 0x06);
541                 //mdelay(150);
542                 status = saa7110_read(client);
543                 dprintk(1,
544                         KERN_INFO
545                         "%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n",
546                         I2C_NAME(client), ver, client->addr << 1, status);
547                 saa7110_write(client, 0x0D, 0x86);
548                 saa7110_write(client, 0x0F, 0x10);
549                 saa7110_write(client, 0x11, 0x59);
550                 //saa7110_write(client, 0x2E, 0x9A);
551         }
552
553         //saa7110_selmux(client,0);
554         //determine_norm(client);
555         /* setup and implicit mode 0 select has been performed */
556
557         return 0;
558 }
559
560 static int
561 saa7110_attach_adapter (struct i2c_adapter *adapter)
562 {
563         dprintk(1,
564                 KERN_INFO
565                 "saa7110.c: starting probe for adapter %s (0x%x)\n",
566                 I2C_NAME(adapter), adapter->id);
567         return i2c_probe(adapter, &addr_data, &saa7110_detect_client);
568 }
569
570 static int
571 saa7110_detach_client (struct i2c_client *client)
572 {
573         struct saa7110 *decoder = i2c_get_clientdata(client);
574         int err;
575
576         err = i2c_detach_client(client);
577         if (err) {
578                 return err;
579         }
580
581         kfree(decoder);
582         kfree(client);
583
584         return 0;
585 }
586
587 /* ----------------------------------------------------------------------- */
588
589 static struct i2c_driver i2c_driver_saa7110 = {
590         .owner = THIS_MODULE,
591         .name = "saa7110",
592
593         .id = I2C_DRIVERID_SAA7110,
594         .flags = I2C_DF_NOTIFY,
595
596         .attach_adapter = saa7110_attach_adapter,
597         .detach_client = saa7110_detach_client,
598         .command = saa7110_command,
599 };
600
601 static int __init
602 saa7110_init (void)
603 {
604         return i2c_add_driver(&i2c_driver_saa7110);
605 }
606
607 static void __exit
608 saa7110_exit (void)
609 {
610         i2c_del_driver(&i2c_driver_saa7110);
611 }
612
613 module_init(saa7110_init);
614 module_exit(saa7110_exit);