[PATCH] remove many unneeded #includes of sched.h
[linux-2.6.git] / drivers / media / video / saa711x.c
1 /*
2  * saa711x - Philips SAA711x video decoder driver version 0.0.1
3  *
4  * To do: Now, it handles only saa7113/7114. Should be improved to
5  * handle all Philips saa711x devices.
6  *
7  * Based on saa7113 driver from Dave Perks <dperks@ibm.net>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22  */
23
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/delay.h>
27 #include <linux/errno.h>
28 #include <linux/fs.h>
29 #include <linux/kernel.h>
30 #include <linux/major.h>
31 #include <linux/slab.h>
32 #include <linux/mm.h>
33 #include <linux/pci.h>
34 #include <linux/signal.h>
35 #include <asm/io.h>
36 #include <asm/pgtable.h>
37 #include <asm/page.h>
38 #include <linux/types.h>
39 #include <asm/uaccess.h>
40 #include <linux/videodev.h>
41
42 MODULE_DESCRIPTION("Philips SAA711x video decoder driver");
43 MODULE_AUTHOR("Dave Perks, Jose Ignacio Gijon, Joerg Heckenbach, Mark McClelland, Dwaine Garden");
44 MODULE_LICENSE("GPL");
45
46 #include <linux/i2c.h>
47
48 #define I2C_NAME(s) (s)->name
49
50 #include <linux/video_decoder.h>
51
52 static int debug = 0;
53 module_param(debug, int, 0644);
54 MODULE_PARM_DESC(debug, " Set the default Debug level.  Default: 0 (Off) - (0-1)");
55
56
57 #define dprintk(num, format, args...) \
58         do { \
59                 if (debug >= num) \
60                         printk(format, ##args); \
61         } while (0)
62
63 /* ----------------------------------------------------------------------- */
64
65 struct saa711x {
66         unsigned char reg[32];
67
68         int norm;
69         int input;
70         int enable;
71         int bright;
72         int contrast;
73         int hue;
74         int sat;
75 };
76
77 #define   I2C_SAA7113        0x4A
78 #define   I2C_SAA7114        0x42
79
80 /* ----------------------------------------------------------------------- */
81
82 static inline int
83 saa711x_write (struct i2c_client *client,
84                u8                 reg,
85                u8                 value)
86 {
87         struct saa711x *decoder = i2c_get_clientdata(client);
88
89         decoder->reg[reg] = value;
90         return i2c_smbus_write_byte_data(client, reg, value);
91 }
92
93 static int
94 saa711x_write_block (struct i2c_client *client,
95                      const u8          *data,
96                      unsigned int       len)
97 {
98         int ret = -1;
99         u8 reg;
100
101         /* the saa711x has an autoincrement function, use it if
102          * the adapter understands raw I2C */
103         if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
104                 /* do raw I2C, not smbus compatible */
105                 struct saa711x *decoder = i2c_get_clientdata(client);
106                 struct i2c_msg msg;
107                 u8 block_data[32];
108
109                 msg.addr = client->addr;
110                 msg.flags = 0;
111                 while (len >= 2) {
112                         msg.buf = (char *) block_data;
113                         msg.len = 0;
114                         block_data[msg.len++] = reg = data[0];
115                         do {
116                                 block_data[msg.len++] =
117                                     decoder->reg[reg++] = data[1];
118                                 len -= 2;
119                                 data += 2;
120                         } while (len >= 2 && data[0] == reg &&
121                                  msg.len < 32);
122                         if ((ret = i2c_transfer(client->adapter,
123                                                 &msg, 1)) < 0)
124                                 break;
125                 }
126         } else {
127                 /* do some slow I2C emulation kind of thing */
128                 while (len >= 2) {
129                         reg = *data++;
130                         if ((ret = saa711x_write(client, reg,
131                                                  *data++)) < 0)
132                                 break;
133                         len -= 2;
134                 }
135         }
136
137         return ret;
138 }
139
140 static int
141 saa711x_init_decoder (struct i2c_client *client,
142               struct video_decoder_init *init)
143 {
144         return saa711x_write_block(client, init->data, init->len);
145 }
146
147 static inline int
148 saa711x_read (struct i2c_client *client,
149               u8                 reg)
150 {
151         return i2c_smbus_read_byte_data(client, reg);
152 }
153
154 /* ----------------------------------------------------------------------- */
155
156 static const unsigned char saa711x_i2c_init[] = {
157         0x00, 0x00,     /* PH711x_CHIP_VERSION 00 - ID byte */
158         0x01, 0x08,     /* PH711x_INCREMENT_DELAY - (1) (1) (1) (1) IDEL3 IDEL2 IDELL1 IDEL0 */
159         0x02, 0xc0,     /* PH711x_ANALOG_INPUT_CONTR_1 - FUSE1 FUSE0 GUDL1 GUDL0 MODE3 MODE2 MODE1 MODE0 */
160         0x03, 0x23,     /* PH711x_ANALOG_INPUT_CONTR_2 - (1) HLNRS VBSL WPOFF HOLDG GAFIX GAI28 GAI18 */
161         0x04, 0x00,     /* PH711x_ANALOG_INPUT_CONTR_3 - GAI17 GAI16 GAI15 GAI14 GAI13 GAI12 GAI11 GAI10 */
162         0x05, 0x00,     /* PH711x_ANALOG_INPUT_CONTR_4 - GAI27 GAI26 GAI25 GAI24 GAI23 GAI22 GAI21 GAI20 */
163         0x06, 0xeb,     /* PH711x_HORIZONTAL_SYNC_START - HSB7 HSB6 HSB5 HSB4 HSB3 HSB2 HSB1 HSB0 */
164         0x07, 0xe0,     /* PH711x_HORIZONTAL_SYNC_STOP - HSS7 HSS6 HSS5 HSS4 HSS3 HSS2 HSS1 HSS0 */
165         0x08, 0x88,     /* PH711x_SYNC_CONTROL - AUFD FSEL FOET HTC1 HTC0 HPLL VNOI1 VNOI0 */
166         0x09, 0x00,     /* PH711x_LUMINANCE_CONTROL - BYPS PREF BPSS1 BPSS0 VBLB UPTCV APER1 APER0 */
167         0x0a, 0x80,     /* PH711x_LUMINANCE_BRIGHTNESS - BRIG7 BRIG6 BRIG5 BRIG4 BRIG3 BRIG2 BRIG1 BRIG0 */
168         0x0b, 0x47,     /* PH711x_LUMINANCE_CONTRAST - CONT7 CONT6 CONT5 CONT4 CONT3 CONT2 CONT1 CONT0 */
169         0x0c, 0x40,     /* PH711x_CHROMA_SATURATION - SATN7 SATN6 SATN5 SATN4 SATN3 SATN2 SATN1 SATN0 */
170         0x0d, 0x00,     /* PH711x_CHROMA_HUE_CONTROL - HUEC7 HUEC6 HUEC5 HUEC4 HUEC3 HUEC2 HUEC1 HUEC0 */
171         0x0e, 0x01,     /* PH711x_CHROMA_CONTROL - CDTO CSTD2 CSTD1 CSTD0 DCCF FCTC CHBW1 CHBW0 */
172         0x0f, 0xaa,     /* PH711x_CHROMA_GAIN_CONTROL - ACGC CGAIN6 CGAIN5 CGAIN4 CGAIN3 CGAIN2 CGAIN1 CGAIN0 */
173         0x10, 0x00,     /* PH711x_FORMAT_DELAY_CONTROL - OFTS1 OFTS0 HDEL1 HDEL0 VRLN YDEL2 YDEL1 YDEL0 */
174         0x11, 0x1C,     /* PH711x_OUTPUT_CONTROL_1 - GPSW1 CM99 GPSW0 HLSEL OEYC OERT VIPB COLO */
175         0x12, 0x01,     /* PH711x_OUTPUT_CONTROL_2 - RTSE13 RTSE12 RTSE11 RTSE10 RTSE03 RTSE02 RTSE01 RTSE00 */
176         0x13, 0x00,     /* PH711x_OUTPUT_CONTROL_3 - ADLSB (1) (1) OLDSB FIDP (1) AOSL1 AOSL0 */
177         0x14, 0x00,     /* RESERVED 14 - (1) (1) (1) (1) (1) (1) (1) (1) */
178         0x15, 0x00,     /* PH711x_V_GATE1_START - VSTA7 VSTA6 VSTA5 VSTA4 VSTA3 VSTA2 VSTA1 VSTA0 */
179         0x16, 0x00,     /* PH711x_V_GATE1_STOP - VSTO7 VSTO6 VSTO5 VSTO4 VSTO3 VSTO2 VSTO1 VSTO0 */
180         0x17, 0x00,     /* PH711x_V_GATE1_MSB - (1) (1) (1) (1) (1) (1) VSTO8 VSTA8 */
181 };
182
183 static int
184 saa711x_command (struct i2c_client *client,
185                  unsigned int       cmd,
186                  void              *arg)
187 {
188         struct saa711x *decoder = i2c_get_clientdata(client);
189
190         switch (cmd) {
191
192         case 0:
193         case DECODER_INIT:
194         {
195                 struct video_decoder_init *init = arg;
196                 if (NULL != init)
197                         return saa711x_init_decoder(client, init);
198                 else {
199                         struct video_decoder_init vdi;
200                         vdi.data = saa711x_i2c_init;
201                         vdi.len = sizeof(saa711x_i2c_init);
202                         return saa711x_init_decoder(client, &vdi);
203                 }
204         }
205
206         case DECODER_DUMP:
207         {
208                 int i;
209
210                 for (i = 0; i < 32; i += 16) {
211                         int j;
212
213                         printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
214                         for (j = 0; j < 16; ++j) {
215                                 printk(" %02x",
216                                        saa711x_read(client, i + j));
217                         }
218                         printk("\n");
219                 }
220         }
221                 break;
222
223         case DECODER_GET_CAPABILITIES:
224         {
225                 struct video_decoder_capability *cap = arg;
226
227                 cap->flags = VIDEO_DECODER_PAL |
228                              VIDEO_DECODER_NTSC |
229                              VIDEO_DECODER_SECAM |
230                              VIDEO_DECODER_AUTO |
231                              VIDEO_DECODER_CCIR;
232                 cap->inputs = 8;
233                 cap->outputs = 1;
234         }
235                 break;
236
237         case DECODER_GET_STATUS:
238         {
239                 int *iarg = arg;
240                 int status;
241                 int res;
242
243                 status = saa711x_read(client, 0x1f);
244                 dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
245                         status);
246                 res = 0;
247                 if ((status & (1 << 6)) == 0) {
248                         res |= DECODER_STATUS_GOOD;
249                 }
250                 switch (decoder->norm) {
251                 case VIDEO_MODE_NTSC:
252                         res |= DECODER_STATUS_NTSC;
253                         break;
254                 case VIDEO_MODE_PAL:
255                         res |= DECODER_STATUS_PAL;
256                         break;
257                 case VIDEO_MODE_SECAM:
258                         res |= DECODER_STATUS_SECAM;
259                         break;
260                 default:
261                 case VIDEO_MODE_AUTO:
262                         if ((status & (1 << 5)) != 0) {
263                                 res |= DECODER_STATUS_NTSC;
264                         } else {
265                                 res |= DECODER_STATUS_PAL;
266                         }
267                         break;
268                 }
269                 if ((status & (1 << 0)) != 0) {
270                         res |= DECODER_STATUS_COLOR;
271                 }
272                 *iarg = res;
273         }
274                 break;
275
276         case DECODER_SET_GPIO:
277         {
278                 int *iarg = arg;
279                 if (0 != *iarg) {
280                         saa711x_write(client, 0x11,
281                                 (decoder->reg[0x11] | 0x80));
282                 } else {
283                         saa711x_write(client, 0x11,
284                                 (decoder->reg[0x11] & 0x7f));
285                 }
286                 break;
287         }
288
289         case DECODER_SET_VBI_BYPASS:
290         {
291                 int *iarg = arg;
292                 if (0 != *iarg) {
293                         saa711x_write(client, 0x13,
294                                 (decoder->reg[0x13] & 0xf0) | 0x0a);
295                 } else {
296                         saa711x_write(client, 0x13,
297                                 (decoder->reg[0x13] & 0xf0));
298                 }
299                 break;
300         }
301
302         case DECODER_SET_NORM:
303         {
304                 int *iarg = arg;
305
306                 switch (*iarg) {
307
308                 case VIDEO_MODE_NTSC:
309                         saa711x_write(client, 0x08,
310                                       (decoder->reg[0x08] & 0x3f) | 0x40);
311                         saa711x_write(client, 0x0e,
312                                       (decoder->reg[0x0e] & 0x8f));
313                         break;
314
315                 case VIDEO_MODE_PAL:
316                         saa711x_write(client, 0x08,
317                                       (decoder->reg[0x08] & 0x3f) | 0x00);
318                         saa711x_write(client, 0x0e,
319                                       (decoder->reg[0x0e] & 0x8f));
320                         break;
321
322                 case VIDEO_MODE_SECAM:
323                         saa711x_write(client, 0x08,
324                                       (decoder->reg[0x08] & 0x3f) | 0x00);
325                         saa711x_write(client, 0x0e,
326                                       (decoder->reg[0x0e] & 0x8f) | 0x50);
327                         break;
328
329                 case VIDEO_MODE_AUTO:
330                         saa711x_write(client, 0x08,
331                                       (decoder->reg[0x08] & 0x3f) | 0x80);
332                         saa711x_write(client, 0x0e,
333                                       (decoder->reg[0x0e] & 0x8f));
334                         break;
335
336                 default:
337                         return -EINVAL;
338
339                 }
340                 decoder->norm = *iarg;
341         }
342                 break;
343
344         case DECODER_SET_INPUT:
345         {
346                 int *iarg = arg;
347                 if (*iarg < 0 || *iarg > 9) {
348                         return -EINVAL;
349                 }
350                 if (decoder->input != *iarg) {
351                         decoder->input = *iarg;
352                         /* select mode */
353                         saa711x_write(client, 0x02,
354                                       (decoder->reg[0x02] & 0xf0) | decoder->input);
355                         /* bypass chrominance trap for modes 4..7 */
356                         saa711x_write(client, 0x09,
357                                       (decoder->reg[0x09] & 0x7f) | ((decoder->input > 3) ? 0x80 : 0));
358                 }
359         }
360                 break;
361
362         case DECODER_SET_OUTPUT:
363         {
364                 int *iarg = arg;
365
366                 /* not much choice of outputs */
367                 if (*iarg != 0) {
368                         return -EINVAL;
369                 }
370         }
371                 break;
372
373         case DECODER_ENABLE_OUTPUT:
374         {
375                 int *iarg = arg;
376                 int enable = (*iarg != 0);
377
378                 if (decoder->enable != enable) {
379                         decoder->enable = enable;
380
381                         /* RJ: If output should be disabled (for
382                          * playing videos), we also need a open PLL.
383                          * The input is set to 0 (where no input
384                          * source is connected), although this
385                          * is not necessary.
386                          *
387                          * If output should be enabled, we have to
388                          * reverse the above.
389                          */
390
391                         if (decoder->enable) {
392                                 saa711x_write(client, 0x02,
393                                               (decoder->
394                                                reg[0x02] & 0xf8) |
395                                               decoder->input);
396                                 saa711x_write(client, 0x08,
397                                               (decoder->reg[0x08] & 0xfb));
398                                 saa711x_write(client, 0x11,
399                                               (decoder->
400                                                reg[0x11] & 0xf3) | 0x0c);
401                         } else {
402                                 saa711x_write(client, 0x02,
403                                               (decoder->reg[0x02] & 0xf8));
404                                 saa711x_write(client, 0x08,
405                                               (decoder->
406                                                reg[0x08] & 0xfb) | 0x04);
407                                 saa711x_write(client, 0x11,
408                                               (decoder->reg[0x11] & 0xf3));
409                         }
410                 }
411         }
412                 break;
413
414         case DECODER_SET_PICTURE:
415         {
416                 struct video_picture *pic = arg;
417
418                 if (decoder->bright != pic->brightness) {
419                         /* We want 0 to 255 we get 0-65535 */
420                         decoder->bright = pic->brightness;
421                         saa711x_write(client, 0x0a, decoder->bright >> 8);
422                 }
423                 if (decoder->contrast != pic->contrast) {
424                         /* We want 0 to 127 we get 0-65535 */
425                         decoder->contrast = pic->contrast;
426                         saa711x_write(client, 0x0b,
427                                       decoder->contrast >> 9);
428                 }
429                 if (decoder->sat != pic->colour) {
430                         /* We want 0 to 127 we get 0-65535 */
431                         decoder->sat = pic->colour;
432                         saa711x_write(client, 0x0c, decoder->sat >> 9);
433                 }
434                 if (decoder->hue != pic->hue) {
435                         /* We want -128 to 127 we get 0-65535 */
436                         decoder->hue = pic->hue;
437                         saa711x_write(client, 0x0d,
438                                       (decoder->hue - 32768) >> 8);
439                 }
440         }
441                 break;
442
443         default:
444                 return -EINVAL;
445         }
446
447         return 0;
448 }
449
450 /* ----------------------------------------------------------------------- */
451
452 /*
453  * Generic i2c probe
454  * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
455  */
456
457 /* standard i2c insmod options */
458 static unsigned short normal_i2c[] = {
459         I2C_SAA7113>>1,         /* saa7113 */
460         I2C_SAA7114>>1,         /* saa7114 */
461         I2C_CLIENT_END
462 };
463
464 I2C_CLIENT_INSMOD;
465
466
467 static struct i2c_driver i2c_driver_saa711x;
468
469 static int
470 saa711x_detect_client (struct i2c_adapter *adapter,
471                        int                 address,
472                        int                 kind)
473 {
474         int i;
475         struct i2c_client *client;
476         struct saa711x *decoder;
477         struct video_decoder_init vdi;
478
479         dprintk(1,
480                 KERN_INFO
481                 "saa711x.c: detecting saa711x client on address 0x%x\n",
482                 address << 1);
483
484         /* Check if the adapter supports the needed features */
485         if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
486                 return 0;
487
488         client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
489         if (client == 0)
490                 return -ENOMEM;
491         client->addr = address;
492         client->adapter = adapter;
493         client->driver = &i2c_driver_saa711x;
494         strlcpy(I2C_NAME(client), "saa711x", sizeof(I2C_NAME(client)));
495         decoder = kzalloc(sizeof(struct saa711x), GFP_KERNEL);
496         if (decoder == NULL) {
497                 kfree(client);
498                 return -ENOMEM;
499         }
500         decoder->norm = VIDEO_MODE_NTSC;
501         decoder->input = 0;
502         decoder->enable = 1;
503         decoder->bright = 32768;
504         decoder->contrast = 32768;
505         decoder->hue = 32768;
506         decoder->sat = 32768;
507         i2c_set_clientdata(client, decoder);
508
509         i = i2c_attach_client(client);
510         if (i) {
511                 kfree(client);
512                 kfree(decoder);
513                 return i;
514         }
515
516         vdi.data = saa711x_i2c_init;
517         vdi.len = sizeof(saa711x_i2c_init);
518         i = saa711x_init_decoder(client, &vdi);
519         if (i < 0) {
520                 dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
521                         I2C_NAME(client), i);
522         } else {
523                 dprintk(1,
524                         KERN_INFO
525                         "%s_attach: chip version %x at address 0x%x\n",
526                         I2C_NAME(client), saa711x_read(client, 0x00) >> 4,
527                         client->addr << 1);
528         }
529
530         return 0;
531 }
532
533 static int
534 saa711x_attach_adapter (struct i2c_adapter *adapter)
535 {
536         dprintk(1,
537                 KERN_INFO
538                 "saa711x.c: starting probe for adapter %s (0x%x)\n",
539                 I2C_NAME(adapter), adapter->id);
540         return i2c_probe(adapter, &addr_data, &saa711x_detect_client);
541 }
542
543 static int
544 saa711x_detach_client (struct i2c_client *client)
545 {
546         struct saa711x *decoder = i2c_get_clientdata(client);
547         int err;
548
549         err = i2c_detach_client(client);
550         if (err) {
551                 return err;
552         }
553
554         kfree(decoder);
555         kfree(client);
556
557         return 0;
558 }
559
560 /* ----------------------------------------------------------------------- */
561
562 static struct i2c_driver i2c_driver_saa711x = {
563         .driver = {
564                 .name = "saa711x",
565         },
566         .id = I2C_DRIVERID_SAA711X,
567         .attach_adapter = saa711x_attach_adapter,
568         .detach_client = saa711x_detach_client,
569         .command = saa711x_command,
570 };
571
572 static int __init
573 saa711x_init (void)
574 {
575         return i2c_add_driver(&i2c_driver_saa711x);
576 }
577
578 static void __exit
579 saa711x_exit (void)
580 {
581         i2c_del_driver(&i2c_driver_saa711x);
582 }
583
584 module_init(saa711x_init);
585 module_exit(saa711x_exit);