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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [video/] [saa711x.c] - Blame information for rev 78

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

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