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xtensa: support DMA buffers in high memory
[cris-mirror.git] / drivers / media / i2c / msp3400-driver.c
blob3db966db83eb50c6888549c062fefd05ae591da9
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
44
45 #include <linux/kernel.h>
46 #include <linux/module.h>
47 #include <linux/slab.h>
48 #include <linux/i2c.h>
49 #include <linux/kthread.h>
50 #include <linux/freezer.h>
51 #include <linux/videodev2.h>
52 #include <media/v4l2-device.h>
53 #include <media/v4l2-ioctl.h>
54 #include <media/drv-intf/msp3400.h>
55 #include <media/i2c/tvaudio.h>
56 #include "msp3400-driver.h"
57
58 /* ---------------------------------------------------------------------- */
59
60 MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
61 MODULE_AUTHOR("Gerd Knorr");
62 MODULE_LICENSE("GPL");
63
64 /* module parameters */
65 static int opmode = OPMODE_AUTO;
66 int msp_debug; /* msp_debug output */
67 bool msp_once; /* no continuous stereo monitoring */
68 bool msp_amsound; /* hard-wire AM sound at 6.5 Hz (france),
69 the autoscan seems work well only with FM... */
70 int msp_standard = 1; /* Override auto detect of audio msp_standard,
71 if needed. */
72 bool msp_dolby;
73
74 int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
75 (msp34xxg only) 0x00a0-0x03c0 */
76
77 /* read-only */
78 module_param(opmode, int, 0444);
79
80 /* read-write */
81 module_param_named(once, msp_once, bool, 0644);
82 module_param_named(debug, msp_debug, int, 0644);
83 module_param_named(stereo_threshold, msp_stereo_thresh, int, 0644);
84 module_param_named(standard, msp_standard, int, 0644);
85 module_param_named(amsound, msp_amsound, bool, 0644);
86 module_param_named(dolby, msp_dolby, bool, 0644);
87
88 MODULE_PARM_DESC(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
89 MODULE_PARM_DESC(once, "No continuous stereo monitoring");
90 MODULE_PARM_DESC(debug, "Enable debug messages [0-3]");
91 MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
92 MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
93 MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
94 MODULE_PARM_DESC(dolby, "Activates Dolby processing");
95
96 /* ---------------------------------------------------------------------- */
97
98 /* control subaddress */
99 #define I2C_MSP_CONTROL 0x00
100 /* demodulator unit subaddress */
101 #define I2C_MSP_DEM 0x10
102 /* DSP unit subaddress */
103 #define I2C_MSP_DSP 0x12
104
105
106 /* ----------------------------------------------------------------------- */
107 /* functions for talking to the MSP3400C Sound processor */
108
109 int msp_reset(struct i2c_client *client)
110 {
111 /* reset and read revision code */
112 static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
113 static u8 reset_on[3] = { I2C_MSP_CONTROL, 0x00, 0x00 };
114 static u8 write[3] = { I2C_MSP_DSP + 1, 0x00, 0x1e };
115 u8 read[2];
116 struct i2c_msg reset[2] = {
117 {
118 .addr = client->addr,
119 .flags = I2C_M_IGNORE_NAK,
120 .len = 3,
121 .buf = reset_off
122 },
123 {
124 .addr = client->addr,
125 .flags = I2C_M_IGNORE_NAK,
126 .len = 3,
127 .buf = reset_on
128 },
129 };
130 struct i2c_msg test[2] = {
131 {
132 .addr = client->addr,
133 .len = 3,
134 .buf = write
135 },
136 {
137 .addr = client->addr,
138 .flags = I2C_M_RD,
139 .len = 2,
140 .buf = read
141 },
142 };
143
144 dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_reset\n");
145 if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
146 i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
147 i2c_transfer(client->adapter, test, 2) != 2) {
148 dev_err(&client->dev, "chip reset failed\n");
149 return -1;
150 }
151 return 0;
152 }
153
154 static int msp_read(struct i2c_client *client, int dev, int addr)
155 {
156 int err, retval;
157 u8 write[3];
158 u8 read[2];
159 struct i2c_msg msgs[2] = {
160 {
161 .addr = client->addr,
162 .len = 3,
163 .buf = write
164 },
165 {
166 .addr = client->addr,
167 .flags = I2C_M_RD,
168 .len = 2,
169 .buf = read
170 }
171 };
172
173 write[0] = dev + 1;
174 write[1] = addr >> 8;
175 write[2] = addr & 0xff;
176
177 for (err = 0; err < 3; err++) {
178 if (i2c_transfer(client->adapter, msgs, 2) == 2)
179 break;
180 dev_warn(&client->dev, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
181 dev, addr);
182 schedule_timeout_interruptible(msecs_to_jiffies(10));
183 }
184 if (err == 3) {
185 dev_warn(&client->dev, "resetting chip, sound will go off.\n");
186 msp_reset(client);
187 return -1;
188 }
189 retval = read[0] << 8 | read[1];
190 dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_read(0x%x, 0x%x): 0x%x\n",
191 dev, addr, retval);
192 return retval;
193 }
194
195 int msp_read_dem(struct i2c_client *client, int addr)
196 {
197 return msp_read(client, I2C_MSP_DEM, addr);
198 }
199
200 int msp_read_dsp(struct i2c_client *client, int addr)
201 {
202 return msp_read(client, I2C_MSP_DSP, addr);
203 }
204
205 static int msp_write(struct i2c_client *client, int dev, int addr, int val)
206 {
207 int err;
208 u8 buffer[5];
209
210 buffer[0] = dev;
211 buffer[1] = addr >> 8;
212 buffer[2] = addr & 0xff;
213 buffer[3] = val >> 8;
214 buffer[4] = val & 0xff;
215
216 dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_write(0x%x, 0x%x, 0x%x)\n",
217 dev, addr, val);
218 for (err = 0; err < 3; err++) {
219 if (i2c_master_send(client, buffer, 5) == 5)
220 break;
221 dev_warn(&client->dev, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
222 dev, addr);
223 schedule_timeout_interruptible(msecs_to_jiffies(10));
224 }
225 if (err == 3) {
226 dev_warn(&client->dev, "resetting chip, sound will go off.\n");
227 msp_reset(client);
228 return -1;
229 }
230 return 0;
231 }
232
233 int msp_write_dem(struct i2c_client *client, int addr, int val)
234 {
235 return msp_write(client, I2C_MSP_DEM, addr, val);
236 }
237
238 int msp_write_dsp(struct i2c_client *client, int addr, int val)
239 {
240 return msp_write(client, I2C_MSP_DSP, addr, val);
241 }
242
243 /* ----------------------------------------------------------------------- *
244 * bits 9 8 5 - SCART DSP input Select:
245 * 0 0 0 - SCART 1 to DSP input (reset position)
246 * 0 1 0 - MONO to DSP input
247 * 1 0 0 - SCART 2 to DSP input
248 * 1 1 1 - Mute DSP input
249 *
250 * bits 11 10 6 - SCART 1 Output Select:
251 * 0 0 0 - undefined (reset position)
252 * 0 1 0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
253 * 1 0 0 - MONO input to SCART 1 Output
254 * 1 1 0 - SCART 1 DA to SCART 1 Output
255 * 0 0 1 - SCART 2 DA to SCART 1 Output
256 * 0 1 1 - SCART 1 Input to SCART 1 Output
257 * 1 1 1 - Mute SCART 1 Output
258 *
259 * bits 13 12 7 - SCART 2 Output Select (for devices with 2 Output SCART):
260 * 0 0 0 - SCART 1 DA to SCART 2 Output (reset position)
261 * 0 1 0 - SCART 1 Input to SCART 2 Output
262 * 1 0 0 - MONO input to SCART 2 Output
263 * 0 0 1 - SCART 2 DA to SCART 2 Output
264 * 0 1 1 - SCART 2 Input to SCART 2 Output
265 * 1 1 0 - Mute SCART 2 Output
266 *
267 * Bits 4 to 0 should be zero.
268 * ----------------------------------------------------------------------- */
269
270 static int scarts[3][9] = {
271 /* MASK IN1 IN2 IN3 IN4 IN1_DA IN2_DA MONO MUTE */
272 /* SCART DSP Input select */
273 { 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1, -1, 0x0100, 0x0320 },
274 /* SCART1 Output select */
275 { 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
276 /* SCART2 Output select */
277 { 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
278 };
279
280 static char *scart_names[] = {
281 "in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
282 };
283
284 void msp_set_scart(struct i2c_client *client, int in, int out)
285 {
286 struct msp_state *state = to_state(i2c_get_clientdata(client));
287
288 state->in_scart = in;
289
290 if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
291 if (-1 == scarts[out][in + 1])
292 return;
293
294 state->acb &= ~scarts[out][0];
295 state->acb |= scarts[out][in + 1];
296 } else
297 state->acb = 0xf60; /* Mute Input and SCART 1 Output */
298
299 dev_dbg_lvl(&client->dev, 1, msp_debug, "scart switch: %s => %d (ACB=0x%04x)\n",
300 scart_names[in], out, state->acb);
301 msp_write_dsp(client, 0x13, state->acb);
302
303 /* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
304 if (state->has_i2s_conf)
305 msp_write_dem(client, 0x40, state->i2s_mode);
306 }
307
308 /* ------------------------------------------------------------------------ */
309
310 static void msp_wake_thread(struct i2c_client *client)
311 {
312 struct msp_state *state = to_state(i2c_get_clientdata(client));
313
314 if (NULL == state->kthread)
315 return;
316 state->watch_stereo = 0;
317 state->restart = 1;
318 wake_up_interruptible(&state->wq);
319 }
320
321 int msp_sleep(struct msp_state *state, int timeout)
322 {
323 DECLARE_WAITQUEUE(wait, current);
324
325 add_wait_queue(&state->wq, &wait);
326 if (!kthread_should_stop()) {
327 if (timeout < 0) {
328 set_current_state(TASK_INTERRUPTIBLE);
329 schedule();
330 } else {
331 schedule_timeout_interruptible
332 (msecs_to_jiffies(timeout));
333 }
334 }
335
336 remove_wait_queue(&state->wq, &wait);
337 try_to_freeze();
338 return state->restart;
339 }
340
341 /* ------------------------------------------------------------------------ */
342
343 static int msp_s_ctrl(struct v4l2_ctrl *ctrl)
344 {
345 struct msp_state *state = ctrl_to_state(ctrl);
346 struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
347 int val = ctrl->val;
348
349 switch (ctrl->id) {
350 case V4L2_CID_AUDIO_VOLUME: {
351 /* audio volume cluster */
352 int reallymuted = state->muted->val | state->scan_in_progress;
353
354 if (!reallymuted)
355 val = (val * 0x7f / 65535) << 8;
356
357 dev_dbg_lvl(&client->dev, 1, msp_debug, "mute=%s scanning=%s volume=%d\n",
358 state->muted->val ? "on" : "off",
359 state->scan_in_progress ? "yes" : "no",
360 state->volume->val);
361
362 msp_write_dsp(client, 0x0000, val);
363 msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
364 if (state->has_scart2_out_volume)
365 msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
366 if (state->has_headphones)
367 msp_write_dsp(client, 0x0006, val);
368 break;
369 }
370
371 case V4L2_CID_AUDIO_BASS:
372 val = ((val - 32768) * 0x60 / 65535) << 8;
373 msp_write_dsp(client, 0x0002, val);
374 if (state->has_headphones)
375 msp_write_dsp(client, 0x0031, val);
376 break;
377
378 case V4L2_CID_AUDIO_TREBLE:
379 val = ((val - 32768) * 0x60 / 65535) << 8;
380 msp_write_dsp(client, 0x0003, val);
381 if (state->has_headphones)
382 msp_write_dsp(client, 0x0032, val);
383 break;
384
385 case V4L2_CID_AUDIO_LOUDNESS:
386 val = val ? ((5 * 4) << 8) : 0;
387 msp_write_dsp(client, 0x0004, val);
388 if (state->has_headphones)
389 msp_write_dsp(client, 0x0033, val);
390 break;
391
392 case V4L2_CID_AUDIO_BALANCE:
393 val = (u8)((val / 256) - 128);
394 msp_write_dsp(client, 0x0001, val << 8);
395 if (state->has_headphones)
396 msp_write_dsp(client, 0x0030, val << 8);
397 break;
398
399 default:
400 return -EINVAL;
401 }
402 return 0;
403 }
404
405 void msp_update_volume(struct msp_state *state)
406 {
407 /* Force an update of the volume/mute cluster */
408 v4l2_ctrl_lock(state->volume);
409 state->volume->val = state->volume->cur.val;
410 state->muted->val = state->muted->cur.val;
411 msp_s_ctrl(state->volume);
412 v4l2_ctrl_unlock(state->volume);
413 }
414
415 /* --- v4l2 ioctls --- */
416 static int msp_s_radio(struct v4l2_subdev *sd)
417 {
418 struct msp_state *state = to_state(sd);
419 struct i2c_client *client = v4l2_get_subdevdata(sd);
420
421 if (state->radio)
422 return 0;
423 state->radio = 1;
424 dev_dbg_lvl(&client->dev, 1, msp_debug, "switching to radio mode\n");
425 state->watch_stereo = 0;
426 switch (state->opmode) {
427 case OPMODE_MANUAL:
428 /* set msp3400 to FM radio mode */
429 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
430 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
431 MSP_CARRIER(10.7));
432 msp_update_volume(state);
433 break;
434 case OPMODE_AUTODETECT:
435 case OPMODE_AUTOSELECT:
436 /* the thread will do for us */
437 msp_wake_thread(client);
438 break;
439 }
440 return 0;
441 }
442
443 static int msp_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
444 {
445 struct i2c_client *client = v4l2_get_subdevdata(sd);
446
447 /* new channel -- kick audio carrier scan */
448 msp_wake_thread(client);
449 return 0;
450 }
451
452 static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id)
453 {
454 struct msp_state *state = to_state(sd);
455 struct i2c_client *client = v4l2_get_subdevdata(sd);
456
457 *id &= state->detected_std;
458
459 dev_dbg_lvl(&client->dev, 2, msp_debug,
460 "detected standard: %s(0x%08Lx)\n",
461 msp_standard_std_name(state->std), state->detected_std);
462
463 return 0;
464 }
465
466 static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
467 {
468 struct msp_state *state = to_state(sd);
469 struct i2c_client *client = v4l2_get_subdevdata(sd);
470 int update = state->radio || state->v4l2_std != id;
471
472 state->v4l2_std = id;
473 state->radio = 0;
474 if (update)
475 msp_wake_thread(client);
476 return 0;
477 }
478
479 static int msp_s_routing(struct v4l2_subdev *sd,
480 u32 input, u32 output, u32 config)
481 {
482 struct msp_state *state = to_state(sd);
483 struct i2c_client *client = v4l2_get_subdevdata(sd);
484 int tuner = (input >> 3) & 1;
485 int sc_in = input & 0x7;
486 int sc1_out = output & 0xf;
487 int sc2_out = (output >> 4) & 0xf;
488 u16 val, reg;
489 int i;
490 int extern_input = 1;
491
492 if (state->route_in == input && state->route_out == output)
493 return 0;
494 state->route_in = input;
495 state->route_out = output;
496 /* check if the tuner input is used */
497 for (i = 0; i < 5; i++) {
498 if (((input >> (4 + i * 4)) & 0xf) == 0)
499 extern_input = 0;
500 }
501 state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
502 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
503 msp_set_scart(client, sc_in, 0);
504 msp_set_scart(client, sc1_out, 1);
505 msp_set_scart(client, sc2_out, 2);
506 msp_set_audmode(client);
507 reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
508 val = msp_read_dem(client, reg);
509 msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
510 /* wake thread when a new input is chosen */
511 msp_wake_thread(client);
512 return 0;
513 }
514
515 static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
516 {
517 struct msp_state *state = to_state(sd);
518 struct i2c_client *client = v4l2_get_subdevdata(sd);
519
520 if (vt->type != V4L2_TUNER_ANALOG_TV)
521 return 0;
522 if (!state->radio) {
523 if (state->opmode == OPMODE_AUTOSELECT)
524 msp_detect_stereo(client);
525 vt->rxsubchans = state->rxsubchans;
526 }
527 vt->audmode = state->audmode;
528 vt->capability |= V4L2_TUNER_CAP_STEREO |
529 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
530 return 0;
531 }
532
533 static int msp_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
534 {
535 struct msp_state *state = to_state(sd);
536 struct i2c_client *client = v4l2_get_subdevdata(sd);
537
538 if (state->radio) /* TODO: add mono/stereo support for radio */
539 return 0;
540 if (state->audmode == vt->audmode)
541 return 0;
542 state->audmode = vt->audmode;
543 /* only set audmode */
544 msp_set_audmode(client);
545 return 0;
546 }
547
548 static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
549 {
550 struct msp_state *state = to_state(sd);
551 struct i2c_client *client = v4l2_get_subdevdata(sd);
552
553 dev_dbg_lvl(&client->dev, 1, msp_debug, "Setting I2S speed to %d\n", freq);
554
555 switch (freq) {
556 case 1024000:
557 state->i2s_mode = 0;
558 break;
559 case 2048000:
560 state->i2s_mode = 1;
561 break;
562 default:
563 return -EINVAL;
564 }
565 return 0;
566 }
567
568 static int msp_log_status(struct v4l2_subdev *sd)
569 {
570 struct msp_state *state = to_state(sd);
571 struct i2c_client *client = v4l2_get_subdevdata(sd);
572 const char *p;
573 char prefix[V4L2_SUBDEV_NAME_SIZE + 20];
574
575 if (state->opmode == OPMODE_AUTOSELECT)
576 msp_detect_stereo(client);
577 dev_info(&client->dev, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
578 client->name, state->rev1, state->rev2);
579 snprintf(prefix, sizeof(prefix), "%s: Audio: ", sd->name);
580 v4l2_ctrl_handler_log_status(&state->hdl, prefix);
581 switch (state->mode) {
582 case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
583 case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
584 case MSP_MODE_FM_TERRA: p = "Terrestrial FM-mono/stereo"; break;
585 case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
586 case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
587 case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
588 case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
589 case MSP_MODE_BTSC: p = "BTSC"; break;
590 case MSP_MODE_EXTERN: p = "External input"; break;
591 default: p = "unknown"; break;
592 }
593 if (state->mode == MSP_MODE_EXTERN) {
594 dev_info(&client->dev, "Mode: %s\n", p);
595 } else if (state->opmode == OPMODE_MANUAL) {
596 dev_info(&client->dev, "Mode: %s (%s%s)\n", p,
597 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
598 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
599 } else {
600 if (state->opmode == OPMODE_AUTODETECT)
601 dev_info(&client->dev, "Mode: %s\n", p);
602 dev_info(&client->dev, "Standard: %s (%s%s)\n",
603 msp_standard_std_name(state->std),
604 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
605 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
606 }
607 dev_info(&client->dev, "Audmode: 0x%04x\n", state->audmode);
608 dev_info(&client->dev, "Routing: 0x%08x (input) 0x%08x (output)\n",
609 state->route_in, state->route_out);
610 dev_info(&client->dev, "ACB: 0x%04x\n", state->acb);
611 return 0;
612 }
613
614 #ifdef CONFIG_PM_SLEEP
615 static int msp_suspend(struct device *dev)
616 {
617 struct i2c_client *client = to_i2c_client(dev);
618 dev_dbg_lvl(&client->dev, 1, msp_debug, "suspend\n");
619 msp_reset(client);
620 return 0;
621 }
622
623 static int msp_resume(struct device *dev)
624 {
625 struct i2c_client *client = to_i2c_client(dev);
626 dev_dbg_lvl(&client->dev, 1, msp_debug, "resume\n");
627 msp_wake_thread(client);
628 return 0;
629 }
630 #endif
631
632 /* ----------------------------------------------------------------------- */
633
634 static const struct v4l2_ctrl_ops msp_ctrl_ops = {
635 .s_ctrl = msp_s_ctrl,
636 };
637
638 static const struct v4l2_subdev_core_ops msp_core_ops = {
639 .log_status = msp_log_status,
640 };
641
642 static const struct v4l2_subdev_video_ops msp_video_ops = {
643 .s_std = msp_s_std,
644 .querystd = msp_querystd,
645 };
646
647 static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
648 .s_frequency = msp_s_frequency,
649 .g_tuner = msp_g_tuner,
650 .s_tuner = msp_s_tuner,
651 .s_radio = msp_s_radio,
652 };
653
654 static const struct v4l2_subdev_audio_ops msp_audio_ops = {
655 .s_routing = msp_s_routing,
656 .s_i2s_clock_freq = msp_s_i2s_clock_freq,
657 };
658
659 static const struct v4l2_subdev_ops msp_ops = {
660 .core = &msp_core_ops,
661 .video = &msp_video_ops,
662 .tuner = &msp_tuner_ops,
663 .audio = &msp_audio_ops,
664 };
665
666 /* ----------------------------------------------------------------------- */
667
668
669 static const char * const opmode_str[] = {
670 [OPMODE_MANUAL] = "manual",
671 [OPMODE_AUTODETECT] = "autodetect",
672 [OPMODE_AUTOSELECT] = "autodetect and autoselect",
673 };
674
675 static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
676 {
677 struct msp_state *state;
678 struct v4l2_subdev *sd;
679 struct v4l2_ctrl_handler *hdl;
680 int (*thread_func)(void *data) = NULL;
681 int msp_hard;
682 int msp_family;
683 int msp_revision;
684 int msp_product, msp_prod_hi, msp_prod_lo;
685 int msp_rom;
686 #if defined(CONFIG_MEDIA_CONTROLLER)
687 int ret;
688 #endif
689
690 if (!id)
691 strlcpy(client->name, "msp3400", sizeof(client->name));
692
693 if (msp_reset(client) == -1) {
694 dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 not found\n");
695 return -ENODEV;
696 }
697
698 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
699 if (!state)
700 return -ENOMEM;
701
702 sd = &state->sd;
703 v4l2_i2c_subdev_init(sd, client, &msp_ops);
704
705 #if defined(CONFIG_MEDIA_CONTROLLER)
706 state->pads[IF_AUD_DEC_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
707 state->pads[IF_AUD_DEC_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
708
709 sd->entity.function = MEDIA_ENT_F_IF_AUD_DECODER;
710
711 ret = media_entity_pads_init(&sd->entity, 2, state->pads);
712 if (ret < 0)
713 return ret;
714 #endif
715
716 state->v4l2_std = V4L2_STD_NTSC;
717 state->detected_std = V4L2_STD_ALL;
718 state->audmode = V4L2_TUNER_MODE_STEREO;
719 state->input = -1;
720 state->i2s_mode = 0;
721 init_waitqueue_head(&state->wq);
722 /* These are the reset input/output positions */
723 state->route_in = MSP_INPUT_DEFAULT;
724 state->route_out = MSP_OUTPUT_DEFAULT;
725
726 state->rev1 = msp_read_dsp(client, 0x1e);
727 if (state->rev1 != -1)
728 state->rev2 = msp_read_dsp(client, 0x1f);
729 dev_dbg_lvl(&client->dev, 1, msp_debug, "rev1=0x%04x, rev2=0x%04x\n",
730 state->rev1, state->rev2);
731 if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
732 dev_dbg_lvl(&client->dev, 1, msp_debug,
733 "not an msp3400 (cannot read chip version)\n");
734 return -ENODEV;
735 }
736
737 msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
738 msp_product = (state->rev2 >> 8) & 0xff;
739 msp_prod_hi = msp_product / 10;
740 msp_prod_lo = msp_product % 10;
741 msp_revision = (state->rev1 & 0x0f) + '@';
742 msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
743 msp_rom = state->rev2 & 0x1f;
744 /* Rev B=2, C=3, D=4, G=7 */
745 state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
746 msp_revision - '@';
747
748 /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
749 state->has_nicam =
750 msp_prod_hi == 1 || msp_prod_hi == 5;
751 /* Has radio support: was added with revision G */
752 state->has_radio =
753 msp_revision >= 'G';
754 /* Has headphones output: not for stripped down products */
755 state->has_headphones =
756 msp_prod_lo < 5;
757 /* Has scart2 input: not in stripped down products of the '3' family */
758 state->has_scart2 =
759 msp_family >= 4 || msp_prod_lo < 7;
760 /* Has scart3 input: not in stripped down products of the '3' family */
761 state->has_scart3 =
762 msp_family >= 4 || msp_prod_lo < 5;
763 /* Has scart4 input: not in pre D revisions, not in stripped D revs */
764 state->has_scart4 =
765 msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
766 /* Has scart2 output: not in stripped down products of
767 * the '3' family */
768 state->has_scart2_out =
769 msp_family >= 4 || msp_prod_lo < 5;
770 /* Has scart2 a volume control? Not in pre-D revisions. */
771 state->has_scart2_out_volume =
772 msp_revision > 'C' && state->has_scart2_out;
773 /* Has a configurable i2s out? */
774 state->has_i2s_conf =
775 msp_revision >= 'G' && msp_prod_lo < 7;
776 /* Has subwoofer output: not in pre-D revs and not in stripped down
777 * products */
778 state->has_subwoofer =
779 msp_revision >= 'D' && msp_prod_lo < 5;
780 /* Has soundprocessing (bass/treble/balance/loudness/equalizer):
781 * not in stripped down products */
782 state->has_sound_processing =
783 msp_prod_lo < 7;
784 /* Has Virtual Dolby Surround: only in msp34x1 */
785 state->has_virtual_dolby_surround =
786 msp_revision == 'G' && msp_prod_lo == 1;
787 /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
788 state->has_dolby_pro_logic =
789 msp_revision == 'G' && msp_prod_lo == 2;
790 /* The msp343xG supports BTSC only and cannot do Automatic Standard
791 * Detection. */
792 state->force_btsc =
793 msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
794
795 state->opmode = opmode;
796 if (state->opmode < OPMODE_MANUAL
797 || state->opmode > OPMODE_AUTOSELECT) {
798 /* MSP revision G and up have both autodetect and autoselect */
799 if (msp_revision >= 'G')
800 state->opmode = OPMODE_AUTOSELECT;
801 /* MSP revision D and up have autodetect */
802 else if (msp_revision >= 'D')
803 state->opmode = OPMODE_AUTODETECT;
804 else
805 state->opmode = OPMODE_MANUAL;
806 }
807
808 hdl = &state->hdl;
809 v4l2_ctrl_handler_init(hdl, 6);
810 if (state->has_sound_processing) {
811 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
812 V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
813 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
814 V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
815 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
816 V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
817 }
818 state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
819 V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
820 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
821 V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
822 state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
823 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
824 sd->ctrl_handler = hdl;
825 if (hdl->error) {
826 int err = hdl->error;
827
828 v4l2_ctrl_handler_free(hdl);
829 return err;
830 }
831
832 v4l2_ctrl_cluster(2, &state->volume);
833 v4l2_ctrl_handler_setup(hdl);
834
835 dev_info(&client->dev,
836 "MSP%d4%02d%c-%c%d found on %s: supports %s%s%s, mode is %s\n",
837 msp_family, msp_product,
838 msp_revision, msp_hard, msp_rom,
839 client->adapter->name,
840 (state->has_nicam) ? "nicam" : "",
841 (state->has_nicam && state->has_radio) ? " and " : "",
842 (state->has_radio) ? "radio" : "",
843 opmode_str[state->opmode]);
844
845 /* version-specific initialization */
846 switch (state->opmode) {
847 case OPMODE_MANUAL:
848 thread_func = msp3400c_thread;
849 break;
850 case OPMODE_AUTODETECT:
851 thread_func = msp3410d_thread;
852 break;
853 case OPMODE_AUTOSELECT:
854 thread_func = msp34xxg_thread;
855 break;
856 }
857
858 /* startup control thread if needed */
859 if (thread_func) {
860 state->kthread = kthread_run(thread_func, client, "msp34xx");
861
862 if (IS_ERR(state->kthread))
863 dev_warn(&client->dev, "kernel_thread() failed\n");
864 msp_wake_thread(client);
865 }
866 return 0;
867 }
868
869 static int msp_remove(struct i2c_client *client)
870 {
871 struct msp_state *state = to_state(i2c_get_clientdata(client));
872
873 v4l2_device_unregister_subdev(&state->sd);
874 /* shutdown control thread */
875 if (state->kthread) {
876 state->restart = 1;
877 kthread_stop(state->kthread);
878 }
879 msp_reset(client);
880
881 v4l2_ctrl_handler_free(&state->hdl);
882 return 0;
883 }
884
885 /* ----------------------------------------------------------------------- */
886
887 static const struct dev_pm_ops msp3400_pm_ops = {
888 SET_SYSTEM_SLEEP_PM_OPS(msp_suspend, msp_resume)
889 };
890
891 static const struct i2c_device_id msp_id[] = {
892 { "msp3400", 0 },
893 { }
894 };
895 MODULE_DEVICE_TABLE(i2c, msp_id);
896
897 static struct i2c_driver msp_driver = {
898 .driver = {
899 .name = "msp3400",
900 .pm = &msp3400_pm_ops,
901 },
902 .probe = msp_probe,
903 .remove = msp_remove,
904 .id_table = msp_id,
905 };
906
907 module_i2c_driver(msp_driver);
CRIS linux kernel tree