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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / media / video / saa711x.c
blob80bf9118785624bdbdbbc68e8c46545f47a6b608
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/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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