V4L/DVB (5052): Pvrusb2: Remove stream claiming hack from /dev/radio
[linux-2.6] / 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
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(HZ/4);
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(HZ/4);
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);