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added 2.6.29.6 aldebaran kernel
[nao-ulib.git] / kernel / 2.6.29.6-aldebaran-rt / drivers / media / video / msp3400-driver.c
blob4d7a91852117920b6dfe38b5d9ed7f1f9278f5c6
1 /*
2 * Programming the mspx4xx sound processor family
3 *
4 * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
5 *
6 * what works and what doesn't:
7 *
8 * AM-Mono
9 * Support for Hauppauge cards added (decoding handled by tuner) added by
10 * Frederic Crozat <fcrozat@mail.dotcom.fr>
11 *
12 * FM-Mono
13 * should work. The stereo modes are backward compatible to FM-mono,
14 * therefore FM-Mono should be allways available.
15 *
16 * FM-Stereo (B/G, used in germany)
17 * should work, with autodetect
18 *
19 * FM-Stereo (satellite)
20 * should work, no autodetect (i.e. default is mono, but you can
21 * switch to stereo -- untested)
22 *
23 * NICAM (B/G, L , used in UK, Scandinavia, Spain and France)
24 * should work, with autodetect. Support for NICAM was added by
25 * Pekka Pietikainen <pp@netppl.fi>
26 *
27 * TODO:
28 * - better SAT support
29 *
30 * 980623 Thomas Sailer (sailer@ife.ee.ethz.ch)
31 * using soundcore instead of OSS
32 *
33 * This program is free software; you can redistribute it and/or
34 * modify it under the terms of the GNU General Public License
35 * as published by the Free Software Foundation; either version 2
36 * of the License, or (at your option) any later version.
37 *
38 * This program is distributed in the hope that it will be useful,
39 * but WITHOUT ANY WARRANTY; without even the implied warranty of
40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
41 * GNU General Public License for more details.
42 *
43 * You should have received a copy of the GNU General Public License
44 * along with this program; if not, write to the Free Software
45 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
46 * 02110-1301, USA.
47 */
48
49
50 #include <linux/kernel.h>
51 #include <linux/module.h>
52 #include <linux/slab.h>
53 #include <linux/i2c.h>
54 #include <linux/kthread.h>
55 #include <linux/freezer.h>
56 #include <linux/videodev2.h>
57 #include <media/v4l2-device.h>
58 #include <media/v4l2-ioctl.h>
59 #include <media/v4l2-i2c-drv-legacy.h>
60 #include <media/msp3400.h>
61 #include <media/tvaudio.h>
62 #include "msp3400-driver.h"
63
64 /* ---------------------------------------------------------------------- */
65
66 MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
67 MODULE_AUTHOR("Gerd Knorr");
68 MODULE_LICENSE("GPL");
69
70 /* module parameters */
71 static int opmode = OPMODE_AUTO;
72 int msp_debug; /* msp_debug output */
73 int msp_once; /* no continous stereo monitoring */
74 int msp_amsound; /* hard-wire AM sound at 6.5 Hz (france),
75 the autoscan seems work well only with FM... */
76 int msp_standard = 1; /* Override auto detect of audio msp_standard,
77 if needed. */
78 int msp_dolby;
79
80 int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
81 (msp34xxg only) 0x00a0-0x03c0 */
82
83 /* read-only */
84 module_param(opmode, int, 0444);
85
86 /* read-write */
87 module_param_named(once, msp_once, bool, 0644);
88 module_param_named(debug, msp_debug, int, 0644);
89 module_param_named(stereo_threshold, msp_stereo_thresh, int, 0644);
90 module_param_named(standard, msp_standard, int, 0644);
91 module_param_named(amsound, msp_amsound, bool, 0644);
92 module_param_named(dolby, msp_dolby, bool, 0644);
93
94 MODULE_PARM_DESC(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
95 MODULE_PARM_DESC(once, "No continuous stereo monitoring");
96 MODULE_PARM_DESC(debug, "Enable debug messages [0-3]");
97 MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
98 MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
99 MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
100 MODULE_PARM_DESC(dolby, "Activates Dolby processsing");
101
102 /* ---------------------------------------------------------------------- */
103
104 /* control subaddress */
105 #define I2C_MSP_CONTROL 0x00
106 /* demodulator unit subaddress */
107 #define I2C_MSP_DEM 0x10
108 /* DSP unit subaddress */
109 #define I2C_MSP_DSP 0x12
110
111 /* Addresses to scan */
112 static unsigned short normal_i2c[] = { 0x80 >> 1, 0x88 >> 1, I2C_CLIENT_END };
113
114 I2C_CLIENT_INSMOD;
115
116 /* ----------------------------------------------------------------------- */
117 /* functions for talking to the MSP3400C Sound processor */
118
119 int msp_reset(struct i2c_client *client)
120 {
121 /* reset and read revision code */
122 static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
123 static u8 reset_on[3] = { I2C_MSP_CONTROL, 0x00, 0x00 };
124 static u8 write[3] = { I2C_MSP_DSP + 1, 0x00, 0x1e };
125 u8 read[2];
126 struct i2c_msg reset[2] = {
127 { client->addr, I2C_M_IGNORE_NAK, 3, reset_off },
128 { client->addr, I2C_M_IGNORE_NAK, 3, reset_on },
129 };
130 struct i2c_msg test[2] = {
131 { client->addr, 0, 3, write },
132 { client->addr, I2C_M_RD, 2, read },
133 };
134
135 v4l_dbg(3, msp_debug, client, "msp_reset\n");
136 if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
137 i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
138 i2c_transfer(client->adapter, test, 2) != 2) {
139 v4l_err(client, "chip reset failed\n");
140 return -1;
141 }
142 return 0;
143 }
144
145 static int msp_read(struct i2c_client *client, int dev, int addr)
146 {
147 int err, retval;
148 u8 write[3];
149 u8 read[2];
150 struct i2c_msg msgs[2] = {
151 { client->addr, 0, 3, write },
152 { client->addr, I2C_M_RD, 2, read }
153 };
154
155 write[0] = dev + 1;
156 write[1] = addr >> 8;
157 write[2] = addr & 0xff;
158
159 for (err = 0; err < 3; err++) {
160 if (i2c_transfer(client->adapter, msgs, 2) == 2)
161 break;
162 v4l_warn(client, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
163 dev, addr);
164 schedule_timeout_interruptible(msecs_to_jiffies(10));
165 }
166 if (err == 3) {
167 v4l_warn(client, "resetting chip, sound will go off.\n");
168 msp_reset(client);
169 return -1;
170 }
171 retval = read[0] << 8 | read[1];
172 v4l_dbg(3, msp_debug, client, "msp_read(0x%x, 0x%x): 0x%x\n",
173 dev, addr, retval);
174 return retval;
175 }
176
177 int msp_read_dem(struct i2c_client *client, int addr)
178 {
179 return msp_read(client, I2C_MSP_DEM, addr);
180 }
181
182 int msp_read_dsp(struct i2c_client *client, int addr)
183 {
184 return msp_read(client, I2C_MSP_DSP, addr);
185 }
186
187 static int msp_write(struct i2c_client *client, int dev, int addr, int val)
188 {
189 int err;
190 u8 buffer[5];
191
192 buffer[0] = dev;
193 buffer[1] = addr >> 8;
194 buffer[2] = addr & 0xff;
195 buffer[3] = val >> 8;
196 buffer[4] = val & 0xff;
197
198 v4l_dbg(3, msp_debug, client, "msp_write(0x%x, 0x%x, 0x%x)\n",
199 dev, addr, val);
200 for (err = 0; err < 3; err++) {
201 if (i2c_master_send(client, buffer, 5) == 5)
202 break;
203 v4l_warn(client, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
204 dev, addr);
205 schedule_timeout_interruptible(msecs_to_jiffies(10));
206 }
207 if (err == 3) {
208 v4l_warn(client, "resetting chip, sound will go off.\n");
209 msp_reset(client);
210 return -1;
211 }
212 return 0;
213 }
214
215 int msp_write_dem(struct i2c_client *client, int addr, int val)
216 {
217 return msp_write(client, I2C_MSP_DEM, addr, val);
218 }
219
220 int msp_write_dsp(struct i2c_client *client, int addr, int val)
221 {
222 return msp_write(client, I2C_MSP_DSP, addr, val);
223 }
224
225 /* ----------------------------------------------------------------------- *
226 * bits 9 8 5 - SCART DSP input Select:
227 * 0 0 0 - SCART 1 to DSP input (reset position)
228 * 0 1 0 - MONO to DSP input
229 * 1 0 0 - SCART 2 to DSP input
230 * 1 1 1 - Mute DSP input
231 *
232 * bits 11 10 6 - SCART 1 Output Select:
233 * 0 0 0 - undefined (reset position)
234 * 0 1 0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
235 * 1 0 0 - MONO input to SCART 1 Output
236 * 1 1 0 - SCART 1 DA to SCART 1 Output
237 * 0 0 1 - SCART 2 DA to SCART 1 Output
238 * 0 1 1 - SCART 1 Input to SCART 1 Output
239 * 1 1 1 - Mute SCART 1 Output
240 *
241 * bits 13 12 7 - SCART 2 Output Select (for devices with 2 Output SCART):
242 * 0 0 0 - SCART 1 DA to SCART 2 Output (reset position)
243 * 0 1 0 - SCART 1 Input to SCART 2 Output
244 * 1 0 0 - MONO input to SCART 2 Output
245 * 0 0 1 - SCART 2 DA to SCART 2 Output
246 * 0 1 1 - SCART 2 Input to SCART 2 Output
247 * 1 1 0 - Mute SCART 2 Output
248 *
249 * Bits 4 to 0 should be zero.
250 * ----------------------------------------------------------------------- */
251
252 static int scarts[3][9] = {
253 /* MASK IN1 IN2 IN3 IN4 IN1_DA IN2_DA MONO MUTE */
254 /* SCART DSP Input select */
255 { 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1, -1, 0x0100, 0x0320 },
256 /* SCART1 Output select */
257 { 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
258 /* SCART2 Output select */
259 { 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
260 };
261
262 static char *scart_names[] = {
263 "in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
264 };
265
266 void msp_set_scart(struct i2c_client *client, int in, int out)
267 {
268 struct msp_state *state = to_state(i2c_get_clientdata(client));
269
270 state->in_scart = in;
271
272 if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
273 if (-1 == scarts[out][in + 1])
274 return;
275
276 state->acb &= ~scarts[out][0];
277 state->acb |= scarts[out][in + 1];
278 } else
279 state->acb = 0xf60; /* Mute Input and SCART 1 Output */
280
281 v4l_dbg(1, msp_debug, client, "scart switch: %s => %d (ACB=0x%04x)\n",
282 scart_names[in], out, state->acb);
283 msp_write_dsp(client, 0x13, state->acb);
284
285 /* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
286 if (state->has_i2s_conf)
287 msp_write_dem(client, 0x40, state->i2s_mode);
288 }
289
290 void msp_set_audio(struct i2c_client *client)
291 {
292 struct msp_state *state = to_state(i2c_get_clientdata(client));
293 int bal = 0, bass, treble, loudness;
294 int val = 0;
295 int reallymuted = state->muted | state->scan_in_progress;
296
297 if (!reallymuted)
298 val = (state->volume * 0x7f / 65535) << 8;
299
300 v4l_dbg(1, msp_debug, client, "mute=%s scanning=%s volume=%d\n",
301 state->muted ? "on" : "off",
302 state->scan_in_progress ? "yes" : "no",
303 state->volume);
304
305 msp_write_dsp(client, 0x0000, val);
306 msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
307 if (state->has_scart2_out_volume)
308 msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
309 if (state->has_headphones)
310 msp_write_dsp(client, 0x0006, val);
311 if (!state->has_sound_processing)
312 return;
313
314 if (val)
315 bal = (u8)((state->balance / 256) - 128);
316 bass = ((state->bass - 32768) * 0x60 / 65535) << 8;
317 treble = ((state->treble - 32768) * 0x60 / 65535) << 8;
318 loudness = state->loudness ? ((5 * 4) << 8) : 0;
319
320 v4l_dbg(1, msp_debug, client, "balance=%d bass=%d treble=%d loudness=%d\n",
321 state->balance, state->bass, state->treble, state->loudness);
322
323 msp_write_dsp(client, 0x0001, bal << 8);
324 msp_write_dsp(client, 0x0002, bass);
325 msp_write_dsp(client, 0x0003, treble);
326 msp_write_dsp(client, 0x0004, loudness);
327 if (!state->has_headphones)
328 return;
329 msp_write_dsp(client, 0x0030, bal << 8);
330 msp_write_dsp(client, 0x0031, bass);
331 msp_write_dsp(client, 0x0032, treble);
332 msp_write_dsp(client, 0x0033, loudness);
333 }
334
335 /* ------------------------------------------------------------------------ */
336
337 static void msp_wake_thread(struct i2c_client *client)
338 {
339 struct msp_state *state = to_state(i2c_get_clientdata(client));
340
341 if (NULL == state->kthread)
342 return;
343 state->watch_stereo = 0;
344 state->restart = 1;
345 wake_up_interruptible(&state->wq);
346 }
347
348 int msp_sleep(struct msp_state *state, int timeout)
349 {
350 DECLARE_WAITQUEUE(wait, current);
351
352 add_wait_queue(&state->wq, &wait);
353 if (!kthread_should_stop()) {
354 if (timeout < 0) {
355 set_current_state(TASK_INTERRUPTIBLE);
356 schedule();
357 } else {
358 schedule_timeout_interruptible
359 (msecs_to_jiffies(timeout));
360 }
361 }
362
363 remove_wait_queue(&state->wq, &wait);
364 try_to_freeze();
365 return state->restart;
366 }
367
368 /* ------------------------------------------------------------------------ */
369 #ifdef CONFIG_VIDEO_ALLOW_V4L1
370 static int msp_mode_v4l2_to_v4l1(int rxsubchans, int audmode)
371 {
372 if (rxsubchans == V4L2_TUNER_SUB_MONO)
373 return VIDEO_SOUND_MONO;
374 if (rxsubchans == V4L2_TUNER_SUB_STEREO)
375 return VIDEO_SOUND_STEREO;
376 if (audmode == V4L2_TUNER_MODE_LANG2)
377 return VIDEO_SOUND_LANG2;
378 return VIDEO_SOUND_LANG1;
379 }
380
381 static int msp_mode_v4l1_to_v4l2(int mode)
382 {
383 if (mode & VIDEO_SOUND_STEREO)
384 return V4L2_TUNER_MODE_STEREO;
385 if (mode & VIDEO_SOUND_LANG2)
386 return V4L2_TUNER_MODE_LANG2;
387 if (mode & VIDEO_SOUND_LANG1)
388 return V4L2_TUNER_MODE_LANG1;
389 return V4L2_TUNER_MODE_MONO;
390 }
391 #endif
392
393 static int msp_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
394 {
395 struct msp_state *state = to_state(sd);
396
397 switch (ctrl->id) {
398 case V4L2_CID_AUDIO_VOLUME:
399 ctrl->value = state->volume;
400 break;
401
402 case V4L2_CID_AUDIO_MUTE:
403 ctrl->value = state->muted;
404 break;
405
406 case V4L2_CID_AUDIO_BALANCE:
407 if (!state->has_sound_processing)
408 return -EINVAL;
409 ctrl->value = state->balance;
410 break;
411
412 case V4L2_CID_AUDIO_BASS:
413 if (!state->has_sound_processing)
414 return -EINVAL;
415 ctrl->value = state->bass;
416 break;
417
418 case V4L2_CID_AUDIO_TREBLE:
419 if (!state->has_sound_processing)
420 return -EINVAL;
421 ctrl->value = state->treble;
422 break;
423
424 case V4L2_CID_AUDIO_LOUDNESS:
425 if (!state->has_sound_processing)
426 return -EINVAL;
427 ctrl->value = state->loudness;
428 break;
429
430 default:
431 return -EINVAL;
432 }
433 return 0;
434 }
435
436 static int msp_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
437 {
438 struct msp_state *state = to_state(sd);
439 struct i2c_client *client = v4l2_get_subdevdata(sd);
440
441 switch (ctrl->id) {
442 case V4L2_CID_AUDIO_VOLUME:
443 state->volume = ctrl->value;
444 if (state->volume == 0)
445 state->balance = 32768;
446 break;
447
448 case V4L2_CID_AUDIO_MUTE:
449 if (ctrl->value < 0 || ctrl->value >= 2)
450 return -ERANGE;
451 state->muted = ctrl->value;
452 break;
453
454 case V4L2_CID_AUDIO_BASS:
455 if (!state->has_sound_processing)
456 return -EINVAL;
457 state->bass = ctrl->value;
458 break;
459
460 case V4L2_CID_AUDIO_TREBLE:
461 if (!state->has_sound_processing)
462 return -EINVAL;
463 state->treble = ctrl->value;
464 break;
465
466 case V4L2_CID_AUDIO_LOUDNESS:
467 if (!state->has_sound_processing)
468 return -EINVAL;
469 state->loudness = ctrl->value;
470 break;
471
472 case V4L2_CID_AUDIO_BALANCE:
473 if (!state->has_sound_processing)
474 return -EINVAL;
475 state->balance = ctrl->value;
476 break;
477
478 default:
479 return -EINVAL;
480 }
481 msp_set_audio(client);
482 return 0;
483 }
484
485 #ifdef CONFIG_VIDEO_ALLOW_V4L1
486 static long msp_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
487 {
488 struct msp_state *state = to_state(sd);
489 struct i2c_client *client = v4l2_get_subdevdata(sd);
490
491 switch (cmd) {
492 /* --- v4l ioctls --- */
493 /* take care: bttv does userspace copying, we'll get a
494 kernel pointer here... */
495 case VIDIOCGAUDIO:
496 {
497 struct video_audio *va = arg;
498
499 va->flags |= VIDEO_AUDIO_VOLUME | VIDEO_AUDIO_MUTABLE;
500 if (state->has_sound_processing)
501 va->flags |= VIDEO_AUDIO_BALANCE |
502 VIDEO_AUDIO_BASS |
503 VIDEO_AUDIO_TREBLE;
504 if (state->muted)
505 va->flags |= VIDEO_AUDIO_MUTE;
506 va->volume = state->volume;
507 va->balance = state->volume ? state->balance : 32768;
508 va->bass = state->bass;
509 va->treble = state->treble;
510
511 if (state->radio)
512 break;
513 if (state->opmode == OPMODE_AUTOSELECT)
514 msp_detect_stereo(client);
515 va->mode = msp_mode_v4l2_to_v4l1(state->rxsubchans, state->audmode);
516 break;
517 }
518
519 case VIDIOCSAUDIO:
520 {
521 struct video_audio *va = arg;
522
523 state->muted = (va->flags & VIDEO_AUDIO_MUTE);
524 state->volume = va->volume;
525 state->balance = va->balance;
526 state->bass = va->bass;
527 state->treble = va->treble;
528 msp_set_audio(client);
529
530 if (va->mode != 0 && state->radio == 0 &&
531 state->audmode != msp_mode_v4l1_to_v4l2(va->mode)) {
532 state->audmode = msp_mode_v4l1_to_v4l2(va->mode);
533 msp_set_audmode(client);
534 }
535 break;
536 }
537
538 case VIDIOCSCHAN:
539 {
540 struct video_channel *vc = arg;
541 int update = 0;
542 v4l2_std_id std;
543
544 if (state->radio)
545 update = 1;
546 state->radio = 0;
547 if (vc->norm == VIDEO_MODE_PAL)
548 std = V4L2_STD_PAL;
549 else if (vc->norm == VIDEO_MODE_SECAM)
550 std = V4L2_STD_SECAM;
551 else
552 std = V4L2_STD_NTSC;
553 if (std != state->v4l2_std) {
554 state->v4l2_std = std;
555 update = 1;
556 }
557 if (update)
558 msp_wake_thread(client);
559 break;
560 }
561
562 case VIDIOCSFREQ:
563 {
564 /* new channel -- kick audio carrier scan */
565 msp_wake_thread(client);
566 break;
567 }
568 default:
569 return -ENOIOCTLCMD;
570 }
571 return 0;
572 }
573 #endif
574
575 /* --- v4l2 ioctls --- */
576 static int msp_s_radio(struct v4l2_subdev *sd)
577 {
578 struct msp_state *state = to_state(sd);
579 struct i2c_client *client = v4l2_get_subdevdata(sd);
580
581 if (state->radio)
582 return 0;
583 state->radio = 1;
584 v4l_dbg(1, msp_debug, client, "switching to radio mode\n");
585 state->watch_stereo = 0;
586 switch (state->opmode) {
587 case OPMODE_MANUAL:
588 /* set msp3400 to FM radio mode */
589 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
590 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
591 MSP_CARRIER(10.7));
592 msp_set_audio(client);
593 break;
594 case OPMODE_AUTODETECT:
595 case OPMODE_AUTOSELECT:
596 /* the thread will do for us */
597 msp_wake_thread(client);
598 break;
599 }
600 return 0;
601 }
602
603 static int msp_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq)
604 {
605 struct i2c_client *client = v4l2_get_subdevdata(sd);
606
607 /* new channel -- kick audio carrier scan */
608 msp_wake_thread(client);
609 return 0;
610 }
611
612 static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
613 {
614 struct msp_state *state = to_state(sd);
615 struct i2c_client *client = v4l2_get_subdevdata(sd);
616 int update = state->radio || state->v4l2_std != id;
617
618 state->v4l2_std = id;
619 state->radio = 0;
620 if (update)
621 msp_wake_thread(client);
622 return 0;
623 }
624
625 static int msp_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *rt)
626 {
627 struct msp_state *state = to_state(sd);
628 struct i2c_client *client = v4l2_get_subdevdata(sd);
629 int tuner = (rt->input >> 3) & 1;
630 int sc_in = rt->input & 0x7;
631 int sc1_out = rt->output & 0xf;
632 int sc2_out = (rt->output >> 4) & 0xf;
633 u16 val, reg;
634 int i;
635 int extern_input = 1;
636
637 if (state->routing.input == rt->input &&
638 state->routing.output == rt->output)
639 return 0;
640 state->routing = *rt;
641 /* check if the tuner input is used */
642 for (i = 0; i < 5; i++) {
643 if (((rt->input >> (4 + i * 4)) & 0xf) == 0)
644 extern_input = 0;
645 }
646 state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
647 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
648 msp_set_scart(client, sc_in, 0);
649 msp_set_scart(client, sc1_out, 1);
650 msp_set_scart(client, sc2_out, 2);
651 msp_set_audmode(client);
652 reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
653 val = msp_read_dem(client, reg);
654 msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
655 /* wake thread when a new input is chosen */
656 msp_wake_thread(client);
657 return 0;
658 }
659
660 static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
661 {
662 struct msp_state *state = to_state(sd);
663 struct i2c_client *client = v4l2_get_subdevdata(sd);
664
665 if (state->radio)
666 return 0;
667 if (state->opmode == OPMODE_AUTOSELECT)
668 msp_detect_stereo(client);
669 vt->audmode = state->audmode;
670 vt->rxsubchans = state->rxsubchans;
671 vt->capability |= V4L2_TUNER_CAP_STEREO |
672 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
673 return 0;
674 }
675
676 static int msp_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
677 {
678 struct msp_state *state = to_state(sd);
679 struct i2c_client *client = v4l2_get_subdevdata(sd);
680
681 if (state->radio) /* TODO: add mono/stereo support for radio */
682 return 0;
683 if (state->audmode == vt->audmode)
684 return 0;
685 state->audmode = vt->audmode;
686 /* only set audmode */
687 msp_set_audmode(client);
688 return 0;
689 }
690
691 static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
692 {
693 struct msp_state *state = to_state(sd);
694 struct i2c_client *client = v4l2_get_subdevdata(sd);
695
696 v4l_dbg(1, msp_debug, client, "Setting I2S speed to %d\n", freq);
697
698 switch (freq) {
699 case 1024000:
700 state->i2s_mode = 0;
701 break;
702 case 2048000:
703 state->i2s_mode = 1;
704 break;
705 default:
706 return -EINVAL;
707 }
708 return 0;
709 }
710
711 static int msp_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
712 {
713 struct msp_state *state = to_state(sd);
714
715 switch (qc->id) {
716 case V4L2_CID_AUDIO_VOLUME:
717 case V4L2_CID_AUDIO_MUTE:
718 return v4l2_ctrl_query_fill_std(qc);
719 default:
720 break;
721 }
722 if (!state->has_sound_processing)
723 return -EINVAL;
724 switch (qc->id) {
725 case V4L2_CID_AUDIO_LOUDNESS:
726 case V4L2_CID_AUDIO_BALANCE:
727 case V4L2_CID_AUDIO_BASS:
728 case V4L2_CID_AUDIO_TREBLE:
729 return v4l2_ctrl_query_fill_std(qc);
730 default:
731 return -EINVAL;
732 }
733 return 0;
734 }
735
736 static int msp_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
737 {
738 struct msp_state *state = to_state(sd);
739 struct i2c_client *client = v4l2_get_subdevdata(sd);
740
741 return v4l2_chip_ident_i2c_client(client, chip, state->ident,
742 (state->rev1 << 16) | state->rev2);
743 }
744
745 static int msp_log_status(struct v4l2_subdev *sd)
746 {
747 struct msp_state *state = to_state(sd);
748 struct i2c_client *client = v4l2_get_subdevdata(sd);
749 const char *p;
750
751 if (state->opmode == OPMODE_AUTOSELECT)
752 msp_detect_stereo(client);
753 v4l_info(client, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
754 client->name, state->rev1, state->rev2);
755 v4l_info(client, "Audio: volume %d%s\n",
756 state->volume, state->muted ? " (muted)" : "");
757 if (state->has_sound_processing) {
758 v4l_info(client, "Audio: balance %d bass %d treble %d loudness %s\n",
759 state->balance, state->bass,
760 state->treble,
761 state->loudness ? "on" : "off");
762 }
763 switch (state->mode) {
764 case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
765 case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
766 case MSP_MODE_FM_TERRA: p = "Terrestial FM-mono/stereo"; break;
767 case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
768 case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
769 case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
770 case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
771 case MSP_MODE_BTSC: p = "BTSC"; break;
772 case MSP_MODE_EXTERN: p = "External input"; break;
773 default: p = "unknown"; break;
774 }
775 if (state->mode == MSP_MODE_EXTERN) {
776 v4l_info(client, "Mode: %s\n", p);
777 } else if (state->opmode == OPMODE_MANUAL) {
778 v4l_info(client, "Mode: %s (%s%s)\n", p,
779 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
780 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
781 } else {
782 if (state->opmode == OPMODE_AUTODETECT)
783 v4l_info(client, "Mode: %s\n", p);
784 v4l_info(client, "Standard: %s (%s%s)\n",
785 msp_standard_std_name(state->std),
786 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
787 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
788 }
789 v4l_info(client, "Audmode: 0x%04x\n", state->audmode);
790 v4l_info(client, "Routing: 0x%08x (input) 0x%08x (output)\n",
791 state->routing.input, state->routing.output);
792 v4l_info(client, "ACB: 0x%04x\n", state->acb);
793 return 0;
794 }
795
796 static int msp_suspend(struct i2c_client *client, pm_message_t state)
797 {
798 v4l_dbg(1, msp_debug, client, "suspend\n");
799 msp_reset(client);
800 return 0;
801 }
802
803 static int msp_resume(struct i2c_client *client)
804 {
805 v4l_dbg(1, msp_debug, client, "resume\n");
806 msp_wake_thread(client);
807 return 0;
808 }
809
810 static int msp_command(struct i2c_client *client, unsigned cmd, void *arg)
811 {
812 return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
813 }
814
815 /* ----------------------------------------------------------------------- */
816
817 static const struct v4l2_subdev_core_ops msp_core_ops = {
818 .log_status = msp_log_status,
819 .g_chip_ident = msp_g_chip_ident,
820 .g_ctrl = msp_g_ctrl,
821 .s_ctrl = msp_s_ctrl,
822 .queryctrl = msp_queryctrl,
823 #ifdef CONFIG_VIDEO_ALLOW_V4L1
824 .ioctl = msp_ioctl,
825 #endif
826 };
827
828 static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
829 .s_frequency = msp_s_frequency,
830 .g_tuner = msp_g_tuner,
831 .s_tuner = msp_s_tuner,
832 .s_radio = msp_s_radio,
833 .s_std = msp_s_std,
834 };
835
836 static const struct v4l2_subdev_audio_ops msp_audio_ops = {
837 .s_routing = msp_s_routing,
838 .s_i2s_clock_freq = msp_s_i2s_clock_freq,
839 };
840
841 static const struct v4l2_subdev_ops msp_ops = {
842 .core = &msp_core_ops,
843 .tuner = &msp_tuner_ops,
844 .audio = &msp_audio_ops,
845 };
846
847 /* ----------------------------------------------------------------------- */
848
849 static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
850 {
851 struct msp_state *state;
852 struct v4l2_subdev *sd;
853 int (*thread_func)(void *data) = NULL;
854 int msp_hard;
855 int msp_family;
856 int msp_revision;
857 int msp_product, msp_prod_hi, msp_prod_lo;
858 int msp_rom;
859
860 if (!id)
861 strlcpy(client->name, "msp3400", sizeof(client->name));
862
863 if (msp_reset(client) == -1) {
864 v4l_dbg(1, msp_debug, client, "msp3400 not found\n");
865 return -ENODEV;
866 }
867
868 state = kzalloc(sizeof(*state), GFP_KERNEL);
869 if (!state)
870 return -ENOMEM;
871
872 sd = &state->sd;
873 v4l2_i2c_subdev_init(sd, client, &msp_ops);
874
875 state->v4l2_std = V4L2_STD_NTSC;
876 state->audmode = V4L2_TUNER_MODE_STEREO;
877 state->volume = 58880; /* 0db gain */
878 state->balance = 32768; /* 0db gain */
879 state->bass = 32768;
880 state->treble = 32768;
881 state->loudness = 0;
882 state->input = -1;
883 state->muted = 0;
884 state->i2s_mode = 0;
885 init_waitqueue_head(&state->wq);
886 /* These are the reset input/output positions */
887 state->routing.input = MSP_INPUT_DEFAULT;
888 state->routing.output = MSP_OUTPUT_DEFAULT;
889
890 state->rev1 = msp_read_dsp(client, 0x1e);
891 if (state->rev1 != -1)
892 state->rev2 = msp_read_dsp(client, 0x1f);
893 v4l_dbg(1, msp_debug, client, "rev1=0x%04x, rev2=0x%04x\n",
894 state->rev1, state->rev2);
895 if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
896 v4l_dbg(1, msp_debug, client,
897 "not an msp3400 (cannot read chip version)\n");
898 kfree(state);
899 return -ENODEV;
900 }
901
902 msp_set_audio(client);
903
904 msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
905 msp_product = (state->rev2 >> 8) & 0xff;
906 msp_prod_hi = msp_product / 10;
907 msp_prod_lo = msp_product % 10;
908 msp_revision = (state->rev1 & 0x0f) + '@';
909 msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
910 msp_rom = state->rev2 & 0x1f;
911 /* Rev B=2, C=3, D=4, G=7 */
912 state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
913 msp_revision - '@';
914
915 /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
916 state->has_nicam =
917 msp_prod_hi == 1 || msp_prod_hi == 5;
918 /* Has radio support: was added with revision G */
919 state->has_radio =
920 msp_revision >= 'G';
921 /* Has headphones output: not for stripped down products */
922 state->has_headphones =
923 msp_prod_lo < 5;
924 /* Has scart2 input: not in stripped down products of the '3' family */
925 state->has_scart2 =
926 msp_family >= 4 || msp_prod_lo < 7;
927 /* Has scart3 input: not in stripped down products of the '3' family */
928 state->has_scart3 =
929 msp_family >= 4 || msp_prod_lo < 5;
930 /* Has scart4 input: not in pre D revisions, not in stripped D revs */
931 state->has_scart4 =
932 msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
933 /* Has scart2 output: not in stripped down products of
934 * the '3' family */
935 state->has_scart2_out =
936 msp_family >= 4 || msp_prod_lo < 5;
937 /* Has scart2 a volume control? Not in pre-D revisions. */
938 state->has_scart2_out_volume =
939 msp_revision > 'C' && state->has_scart2_out;
940 /* Has a configurable i2s out? */
941 state->has_i2s_conf =
942 msp_revision >= 'G' && msp_prod_lo < 7;
943 /* Has subwoofer output: not in pre-D revs and not in stripped down
944 * products */
945 state->has_subwoofer =
946 msp_revision >= 'D' && msp_prod_lo < 5;
947 /* Has soundprocessing (bass/treble/balance/loudness/equalizer):
948 * not in stripped down products */
949 state->has_sound_processing =
950 msp_prod_lo < 7;
951 /* Has Virtual Dolby Surround: only in msp34x1 */
952 state->has_virtual_dolby_surround =
953 msp_revision == 'G' && msp_prod_lo == 1;
954 /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
955 state->has_dolby_pro_logic =
956 msp_revision == 'G' && msp_prod_lo == 2;
957 /* The msp343xG supports BTSC only and cannot do Automatic Standard
958 * Detection. */
959 state->force_btsc =
960 msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
961
962 state->opmode = opmode;
963 if (state->opmode == OPMODE_AUTO) {
964 /* MSP revision G and up have both autodetect and autoselect */
965 if (msp_revision >= 'G')
966 state->opmode = OPMODE_AUTOSELECT;
967 /* MSP revision D and up have autodetect */
968 else if (msp_revision >= 'D')
969 state->opmode = OPMODE_AUTODETECT;
970 else
971 state->opmode = OPMODE_MANUAL;
972 }
973
974 /* hello world :-) */
975 v4l_info(client, "MSP%d4%02d%c-%c%d found @ 0x%x (%s)\n",
976 msp_family, msp_product,
977 msp_revision, msp_hard, msp_rom,
978 client->addr << 1, client->adapter->name);
979 v4l_info(client, "%s ", client->name);
980 if (state->has_nicam && state->has_radio)
981 printk(KERN_CONT "supports nicam and radio, ");
982 else if (state->has_nicam)
983 printk(KERN_CONT "supports nicam, ");
984 else if (state->has_radio)
985 printk(KERN_CONT "supports radio, ");
986 printk(KERN_CONT "mode is ");
987
988 /* version-specific initialization */
989 switch (state->opmode) {
990 case OPMODE_MANUAL:
991 printk(KERN_CONT "manual");
992 thread_func = msp3400c_thread;
993 break;
994 case OPMODE_AUTODETECT:
995 printk(KERN_CONT "autodetect");
996 thread_func = msp3410d_thread;
997 break;
998 case OPMODE_AUTOSELECT:
999 printk(KERN_CONT "autodetect and autoselect");
1000 thread_func = msp34xxg_thread;
1001 break;
1002 }
1003 printk(KERN_CONT "\n");
1004
1005 /* startup control thread if needed */
1006 if (thread_func) {
1007 state->kthread = kthread_run(thread_func, client, "msp34xx");
1008
1009 if (IS_ERR(state->kthread))
1010 v4l_warn(client, "kernel_thread() failed\n");
1011 msp_wake_thread(client);
1012 }
1013 return 0;
1014 }
1015
1016 static int msp_remove(struct i2c_client *client)
1017 {
1018 struct msp_state *state = to_state(i2c_get_clientdata(client));
1019
1020 v4l2_device_unregister_subdev(&state->sd);
1021 /* shutdown control thread */
1022 if (state->kthread) {
1023 state->restart = 1;
1024 kthread_stop(state->kthread);
1025 }
1026 msp_reset(client);
1027
1028 kfree(state);
1029 return 0;
1030 }
1031
1032 /* ----------------------------------------------------------------------- */
1033
1034 static const struct i2c_device_id msp_id[] = {
1035 { "msp3400", 0 },
1036 { }
1037 };
1038 MODULE_DEVICE_TABLE(i2c, msp_id);
1039
1040 static struct v4l2_i2c_driver_data v4l2_i2c_data = {
1041 .name = "msp3400",
1042 .driverid = I2C_DRIVERID_MSP3400,
1043 .command = msp_command,
1044 .probe = msp_probe,
1045 .remove = msp_remove,
1046 .suspend = msp_suspend,
1047 .resume = msp_resume,
1048 .id_table = msp_id,
1049 };
1050
1051 /*
1052 * Overrides for Emacs so that we follow Linus's tabbing style.
1053 * ---------------------------------------------------------------------------
1054 * Local variables:
1055 * c-basic-offset: 8
1056 * End:
1057 */
Nao low-level kernelspace/userspace library that runs on our robots, Nao-Team HTWK