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msp3400-driver.c
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1 /*
2  * Programming the mspx4xx sound processor family
3  *
4  * (c) 1997-2001 Gerd Knorr <[email protected]>
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 <[email protected]>
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 <[email protected]>
26  *
27  * TODO:
28  * - better SAT support
29  *
30  * 980623 Thomas Sailer ([email protected])
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/msp3400.h>
60 #include <media/tvaudio.h>
61 #include "msp3400-driver.h"
62 
63 /* ---------------------------------------------------------------------- */
64 
65 MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
66 MODULE_AUTHOR("Gerd Knorr");
67 MODULE_LICENSE("GPL");
68 
69 /* module parameters */
70 static int opmode = OPMODE_AUTO;
71 int msp_debug; /* msp_debug output */
72 bool msp_once; /* no continuous stereo monitoring */
73 bool msp_amsound; /* hard-wire AM sound at 6.5 Hz (france),
74  the autoscan seems work well only with FM... */
75 int msp_standard = 1; /* Override auto detect of audio msp_standard,
76  if needed. */
77 bool msp_dolby;
78 
79 int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
80  (msp34xxg only) 0x00a0-0x03c0 */
81 
82 /* read-only */
83 module_param(opmode, int, 0444);
84 
85 /* read-write */
86 module_param_named(once, msp_once, bool, 0644);
87 module_param_named(debug, msp_debug, int, 0644);
88 module_param_named(stereo_threshold, msp_stereo_thresh, int, 0644);
89 module_param_named(standard, msp_standard, int, 0644);
90 module_param_named(amsound, msp_amsound, bool, 0644);
91 module_param_named(dolby, msp_dolby, bool, 0644);
92 
93 MODULE_PARM_DESC(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
94 MODULE_PARM_DESC(once, "No continuous stereo monitoring");
95 MODULE_PARM_DESC(debug, "Enable debug messages [0-3]");
96 MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
97 MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
98 MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
99 MODULE_PARM_DESC(dolby, "Activates Dolby processing");
100 
101 /* ---------------------------------------------------------------------- */
102 
103 /* control subaddress */
104 #define I2C_MSP_CONTROL 0x00
105 /* demodulator unit subaddress */
106 #define I2C_MSP_DEM 0x10
107 /* DSP unit subaddress */
108 #define I2C_MSP_DSP 0x12
109 
110 
111 /* ----------------------------------------------------------------------- */
112 /* functions for talking to the MSP3400C Sound processor */
113 
114 int msp_reset(struct i2c_client *client)
115 {
116  /* reset and read revision code */
117  static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
118  static u8 reset_on[3] = { I2C_MSP_CONTROL, 0x00, 0x00 };
119  static u8 write[3] = { I2C_MSP_DSP + 1, 0x00, 0x1e };
120  u8 read[2];
121  struct i2c_msg reset[2] = {
122  {
123  .addr = client->addr,
124  .flags = I2C_M_IGNORE_NAK,
125  .len = 3,
126  .buf = reset_off
127  },
128  {
129  .addr = client->addr,
130  .flags = I2C_M_IGNORE_NAK,
131  .len = 3,
132  .buf = reset_on
133  },
134  };
135  struct i2c_msg test[2] = {
136  {
137  .addr = client->addr,
138  .len = 3,
139  .buf = write
140  },
141  {
142  .addr = client->addr,
143  .flags = I2C_M_RD,
144  .len = 2,
145  .buf = read
146  },
147  };
148 
149  v4l_dbg(3, msp_debug, client, "msp_reset\n");
150  if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
151  i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
152  i2c_transfer(client->adapter, test, 2) != 2) {
153  v4l_err(client, "chip reset failed\n");
154  return -1;
155  }
156  return 0;
157 }
158 
159 static int msp_read(struct i2c_client *client, int dev, int addr)
160 {
161  int err, retval;
162  u8 write[3];
163  u8 read[2];
164  struct i2c_msg msgs[2] = {
165  {
166  .addr = client->addr,
167  .len = 3,
168  .buf = write
169  },
170  {
171  .addr = client->addr,
172  .flags = I2C_M_RD,
173  .len = 2,
174  .buf = read
175  }
176  };
177 
178  write[0] = dev + 1;
179  write[1] = addr >> 8;
180  write[2] = addr & 0xff;
181 
182  for (err = 0; err < 3; err++) {
183  if (i2c_transfer(client->adapter, msgs, 2) == 2)
184  break;
185  v4l_warn(client, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
186  dev, addr);
187  schedule_timeout_interruptible(msecs_to_jiffies(10));
188  }
189  if (err == 3) {
190  v4l_warn(client, "resetting chip, sound will go off.\n");
191  msp_reset(client);
192  return -1;
193  }
194  retval = read[0] << 8 | read[1];
195  v4l_dbg(3, msp_debug, client, "msp_read(0x%x, 0x%x): 0x%x\n",
196  dev, addr, retval);
197  return retval;
198 }
199 
200 int msp_read_dem(struct i2c_client *client, int addr)
201 {
202  return msp_read(client, I2C_MSP_DEM, addr);
203 }
204 
205 int msp_read_dsp(struct i2c_client *client, int addr)
206 {
207  return msp_read(client, I2C_MSP_DSP, addr);
208 }
209 
210 static int msp_write(struct i2c_client *client, int dev, int addr, int val)
211 {
212  int err;
213  u8 buffer[5];
214 
215  buffer[0] = dev;
216  buffer[1] = addr >> 8;
217  buffer[2] = addr & 0xff;
218  buffer[3] = val >> 8;
219  buffer[4] = val & 0xff;
220 
221  v4l_dbg(3, msp_debug, client, "msp_write(0x%x, 0x%x, 0x%x)\n",
222  dev, addr, val);
223  for (err = 0; err < 3; err++) {
224  if (i2c_master_send(client, buffer, 5) == 5)
225  break;
226  v4l_warn(client, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
227  dev, addr);
228  schedule_timeout_interruptible(msecs_to_jiffies(10));
229  }
230  if (err == 3) {
231  v4l_warn(client, "resetting chip, sound will go off.\n");
232  msp_reset(client);
233  return -1;
234  }
235  return 0;
236 }
237 
238 int msp_write_dem(struct i2c_client *client, int addr, int val)
239 {
240  return msp_write(client, I2C_MSP_DEM, addr, val);
241 }
242 
243 int msp_write_dsp(struct i2c_client *client, int addr, int val)
244 {
245  return msp_write(client, I2C_MSP_DSP, addr, val);
246 }
247 
248 /* ----------------------------------------------------------------------- *
249  * bits 9 8 5 - SCART DSP input Select:
250  * 0 0 0 - SCART 1 to DSP input (reset position)
251  * 0 1 0 - MONO to DSP input
252  * 1 0 0 - SCART 2 to DSP input
253  * 1 1 1 - Mute DSP input
254  *
255  * bits 11 10 6 - SCART 1 Output Select:
256  * 0 0 0 - undefined (reset position)
257  * 0 1 0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
258  * 1 0 0 - MONO input to SCART 1 Output
259  * 1 1 0 - SCART 1 DA to SCART 1 Output
260  * 0 0 1 - SCART 2 DA to SCART 1 Output
261  * 0 1 1 - SCART 1 Input to SCART 1 Output
262  * 1 1 1 - Mute SCART 1 Output
263  *
264  * bits 13 12 7 - SCART 2 Output Select (for devices with 2 Output SCART):
265  * 0 0 0 - SCART 1 DA to SCART 2 Output (reset position)
266  * 0 1 0 - SCART 1 Input to SCART 2 Output
267  * 1 0 0 - MONO input to SCART 2 Output
268  * 0 0 1 - SCART 2 DA to SCART 2 Output
269  * 0 1 1 - SCART 2 Input to SCART 2 Output
270  * 1 1 0 - Mute SCART 2 Output
271  *
272  * Bits 4 to 0 should be zero.
273  * ----------------------------------------------------------------------- */
274 
275 static int scarts[3][9] = {
276  /* MASK IN1 IN2 IN3 IN4 IN1_DA IN2_DA MONO MUTE */
277  /* SCART DSP Input select */
278  { 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1, -1, 0x0100, 0x0320 },
279  /* SCART1 Output select */
280  { 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
281  /* SCART2 Output select */
282  { 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
283 };
284 
285 static char *scart_names[] = {
286  "in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
287 };
288 
289 void msp_set_scart(struct i2c_client *client, int in, int out)
290 {
291  struct msp_state *state = to_state(i2c_get_clientdata(client));
292 
293  state->in_scart = in;
294 
295  if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
296  if (-1 == scarts[out][in + 1])
297  return;
298 
299  state->acb &= ~scarts[out][0];
300  state->acb |= scarts[out][in + 1];
301  } else
302  state->acb = 0xf60; /* Mute Input and SCART 1 Output */
303 
304  v4l_dbg(1, msp_debug, client, "scart switch: %s => %d (ACB=0x%04x)\n",
305  scart_names[in], out, state->acb);
306  msp_write_dsp(client, 0x13, state->acb);
307 
308  /* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
309  if (state->has_i2s_conf)
310  msp_write_dem(client, 0x40, state->i2s_mode);
311 }
312 
313 /* ------------------------------------------------------------------------ */
314 
315 static void msp_wake_thread(struct i2c_client *client)
316 {
317  struct msp_state *state = to_state(i2c_get_clientdata(client));
318 
319  if (NULL == state->kthread)
320  return;
321  state->watch_stereo = 0;
322  state->restart = 1;
323  wake_up_interruptible(&state->wq);
324 }
325 
326 int msp_sleep(struct msp_state *state, int timeout)
327 {
328  DECLARE_WAITQUEUE(wait, current);
329 
330  add_wait_queue(&state->wq, &wait);
331  if (!kthread_should_stop()) {
332  if (timeout < 0) {
333  set_current_state(TASK_INTERRUPTIBLE);
334  schedule();
335  } else {
336  schedule_timeout_interruptible
337  (msecs_to_jiffies(timeout));
338  }
339  }
340 
341  remove_wait_queue(&state->wq, &wait);
342  try_to_freeze();
343  return state->restart;
344 }
345 
346 /* ------------------------------------------------------------------------ */
347 
348 static int msp_s_ctrl(struct v4l2_ctrl *ctrl)
349 {
350  struct msp_state *state = ctrl_to_state(ctrl);
351  struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
352  int val = ctrl->val;
353 
354  switch (ctrl->id) {
355  case V4L2_CID_AUDIO_VOLUME: {
356  /* audio volume cluster */
357  int reallymuted = state->muted->val | state->scan_in_progress;
358 
359  if (!reallymuted)
360  val = (val * 0x7f / 65535) << 8;
361 
362  v4l_dbg(1, msp_debug, client, "mute=%s scanning=%s volume=%d\n",
363  state->muted->val ? "on" : "off",
364  state->scan_in_progress ? "yes" : "no",
365  state->volume->val);
366 
367  msp_write_dsp(client, 0x0000, val);
368  msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
369  if (state->has_scart2_out_volume)
370  msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
371  if (state->has_headphones)
372  msp_write_dsp(client, 0x0006, val);
373  break;
374  }
375 
376  case V4L2_CID_AUDIO_BASS:
377  val = ((val - 32768) * 0x60 / 65535) << 8;
378  msp_write_dsp(client, 0x0002, val);
379  if (state->has_headphones)
380  msp_write_dsp(client, 0x0031, val);
381  break;
382 
383  case V4L2_CID_AUDIO_TREBLE:
384  val = ((val - 32768) * 0x60 / 65535) << 8;
385  msp_write_dsp(client, 0x0003, val);
386  if (state->has_headphones)
387  msp_write_dsp(client, 0x0032, val);
388  break;
389 
390  case V4L2_CID_AUDIO_LOUDNESS:
391  val = val ? ((5 * 4) << 8) : 0;
392  msp_write_dsp(client, 0x0004, val);
393  if (state->has_headphones)
394  msp_write_dsp(client, 0x0033, val);
395  break;
396 
397  case V4L2_CID_AUDIO_BALANCE:
398  val = (u8)((val / 256) - 128);
399  msp_write_dsp(client, 0x0001, val << 8);
400  if (state->has_headphones)
401  msp_write_dsp(client, 0x0030, val << 8);
402  break;
403 
404  default:
405  return -EINVAL;
406  }
407  return 0;
408 }
409 
410 void msp_update_volume(struct msp_state *state)
411 {
412  /* Force an update of the volume/mute cluster */
413  v4l2_ctrl_lock(state->volume);
414  state->volume->val = state->volume->cur.val;
415  state->muted->val = state->muted->cur.val;
416  msp_s_ctrl(state->volume);
417  v4l2_ctrl_unlock(state->volume);
418 }
419 
420 /* --- v4l2 ioctls --- */
421 static int msp_s_radio(struct v4l2_subdev *sd)
422 {
423  struct msp_state *state = to_state(sd);
424  struct i2c_client *client = v4l2_get_subdevdata(sd);
425 
426  if (state->radio)
427  return 0;
428  state->radio = 1;
429  v4l_dbg(1, msp_debug, client, "switching to radio mode\n");
430  state->watch_stereo = 0;
431  switch (state->opmode) {
432  case OPMODE_MANUAL:
433  /* set msp3400 to FM radio mode */
434  msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
435  msp3400c_set_carrier(client, MSP_CARRIER(10.7),
436  MSP_CARRIER(10.7));
437  msp_update_volume(state);
438  break;
439  case OPMODE_AUTODETECT:
440  case OPMODE_AUTOSELECT:
441  /* the thread will do for us */
442  msp_wake_thread(client);
443  break;
444  }
445  return 0;
446 }
447 
448 static int msp_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq)
449 {
450  struct i2c_client *client = v4l2_get_subdevdata(sd);
451 
452  /* new channel -- kick audio carrier scan */
453  msp_wake_thread(client);
454  return 0;
455 }
456 
457 static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id)
458 {
459  struct msp_state *state = to_state(sd);
460  struct i2c_client *client = v4l2_get_subdevdata(sd);
461 
462  *id &= state->detected_std;
463 
464  v4l_dbg(2, msp_debug, client,
465  "detected standard: %s(0x%08Lx)\n",
466  msp_standard_std_name(state->std), state->detected_std);
467 
468  return 0;
469 }
470 
471 static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
472 {
473  struct msp_state *state = to_state(sd);
474  struct i2c_client *client = v4l2_get_subdevdata(sd);
475  int update = state->radio || state->v4l2_std != id;
476 
477  state->v4l2_std = id;
478  state->radio = 0;
479  if (update)
480  msp_wake_thread(client);
481  return 0;
482 }
483 
484 static int msp_s_routing(struct v4l2_subdev *sd,
485  u32 input, u32 output, u32 config)
486 {
487  struct msp_state *state = to_state(sd);
488  struct i2c_client *client = v4l2_get_subdevdata(sd);
489  int tuner = (input >> 3) & 1;
490  int sc_in = input & 0x7;
491  int sc1_out = output & 0xf;
492  int sc2_out = (output >> 4) & 0xf;
493  u16 val, reg;
494  int i;
495  int extern_input = 1;
496 
497  if (state->route_in == input && state->route_out == output)
498  return 0;
499  state->route_in = input;
500  state->route_out = output;
501  /* check if the tuner input is used */
502  for (i = 0; i < 5; i++) {
503  if (((input >> (4 + i * 4)) & 0xf) == 0)
504  extern_input = 0;
505  }
506  state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
507  state->rxsubchans = V4L2_TUNER_SUB_STEREO;
508  msp_set_scart(client, sc_in, 0);
509  msp_set_scart(client, sc1_out, 1);
510  msp_set_scart(client, sc2_out, 2);
511  msp_set_audmode(client);
512  reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
513  val = msp_read_dem(client, reg);
514  msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
515  /* wake thread when a new input is chosen */
516  msp_wake_thread(client);
517  return 0;
518 }
519 
520 static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
521 {
522  struct msp_state *state = to_state(sd);
523  struct i2c_client *client = v4l2_get_subdevdata(sd);
524 
525  if (vt->type != V4L2_TUNER_ANALOG_TV)
526  return 0;
527  if (!state->radio) {
528  if (state->opmode == OPMODE_AUTOSELECT)
529  msp_detect_stereo(client);
530  vt->rxsubchans = state->rxsubchans;
531  }
532  vt->audmode = state->audmode;
533  vt->capability |= V4L2_TUNER_CAP_STEREO |
534  V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
535  return 0;
536 }
537 
538 static int msp_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
539 {
540  struct msp_state *state = to_state(sd);
541  struct i2c_client *client = v4l2_get_subdevdata(sd);
542 
543  if (state->radio) /* TODO: add mono/stereo support for radio */
544  return 0;
545  if (state->audmode == vt->audmode)
546  return 0;
547  state->audmode = vt->audmode;
548  /* only set audmode */
549  msp_set_audmode(client);
550  return 0;
551 }
552 
553 static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
554 {
555  struct msp_state *state = to_state(sd);
556  struct i2c_client *client = v4l2_get_subdevdata(sd);
557 
558  v4l_dbg(1, msp_debug, client, "Setting I2S speed to %d\n", freq);
559 
560  switch (freq) {
561  case 1024000:
562  state->i2s_mode = 0;
563  break;
564  case 2048000:
565  state->i2s_mode = 1;
566  break;
567  default:
568  return -EINVAL;
569  }
570  return 0;
571 }
572 
573 static int msp_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
574 {
575  struct msp_state *state = to_state(sd);
576  struct i2c_client *client = v4l2_get_subdevdata(sd);
577 
578  return v4l2_chip_ident_i2c_client(client, chip, state->ident,
579  (state->rev1 << 16) | state->rev2);
580 }
581 
582 static int msp_log_status(struct v4l2_subdev *sd)
583 {
584  struct msp_state *state = to_state(sd);
585  struct i2c_client *client = v4l2_get_subdevdata(sd);
586  const char *p;
587  char prefix[V4L2_SUBDEV_NAME_SIZE + 20];
588 
589  if (state->opmode == OPMODE_AUTOSELECT)
590  msp_detect_stereo(client);
591  v4l_info(client, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
592  client->name, state->rev1, state->rev2);
593  snprintf(prefix, sizeof(prefix), "%s: Audio: ", sd->name);
594  v4l2_ctrl_handler_log_status(&state->hdl, prefix);
595  switch (state->mode) {
596  case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
597  case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
598  case MSP_MODE_FM_TERRA: p = "Terrestrial FM-mono/stereo"; break;
599  case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
600  case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
601  case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
602  case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
603  case MSP_MODE_BTSC: p = "BTSC"; break;
604  case MSP_MODE_EXTERN: p = "External input"; break;
605  default: p = "unknown"; break;
606  }
607  if (state->mode == MSP_MODE_EXTERN) {
608  v4l_info(client, "Mode: %s\n", p);
609  } else if (state->opmode == OPMODE_MANUAL) {
610  v4l_info(client, "Mode: %s (%s%s)\n", p,
611  (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
612  (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
613  } else {
614  if (state->opmode == OPMODE_AUTODETECT)
615  v4l_info(client, "Mode: %s\n", p);
616  v4l_info(client, "Standard: %s (%s%s)\n",
617  msp_standard_std_name(state->std),
618  (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
619  (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
620  }
621  v4l_info(client, "Audmode: 0x%04x\n", state->audmode);
622  v4l_info(client, "Routing: 0x%08x (input) 0x%08x (output)\n",
623  state->route_in, state->route_out);
624  v4l_info(client, "ACB: 0x%04x\n", state->acb);
625  return 0;
626 }
627 
628 #ifdef CONFIG_PM_SLEEP
629 static int msp_suspend(struct device *dev)
630 {
631  struct i2c_client *client = to_i2c_client(dev);
632  v4l_dbg(1, msp_debug, client, "suspend\n");
633  msp_reset(client);
634  return 0;
635 }
636 
637 static int msp_resume(struct device *dev)
638 {
639  struct i2c_client *client = to_i2c_client(dev);
640  v4l_dbg(1, msp_debug, client, "resume\n");
641  msp_wake_thread(client);
642  return 0;
643 }
644 #endif
645 
646 /* ----------------------------------------------------------------------- */
647 
648 static const struct v4l2_ctrl_ops msp_ctrl_ops = {
649  .s_ctrl = msp_s_ctrl,
650 };
651 
652 static const struct v4l2_subdev_core_ops msp_core_ops = {
653  .log_status = msp_log_status,
654  .g_chip_ident = msp_g_chip_ident,
655  .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
656  .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
657  .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
658  .g_ctrl = v4l2_subdev_g_ctrl,
659  .s_ctrl = v4l2_subdev_s_ctrl,
660  .queryctrl = v4l2_subdev_queryctrl,
661  .querymenu = v4l2_subdev_querymenu,
662  .s_std = msp_s_std,
663 };
664 
665 static const struct v4l2_subdev_video_ops msp_video_ops = {
666  .querystd = msp_querystd,
667 };
668 
669 static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
670  .s_frequency = msp_s_frequency,
671  .g_tuner = msp_g_tuner,
672  .s_tuner = msp_s_tuner,
673  .s_radio = msp_s_radio,
674 };
675 
676 static const struct v4l2_subdev_audio_ops msp_audio_ops = {
677  .s_routing = msp_s_routing,
678  .s_i2s_clock_freq = msp_s_i2s_clock_freq,
679 };
680 
681 static const struct v4l2_subdev_ops msp_ops = {
682  .core = &msp_core_ops,
683  .video = &msp_video_ops,
684  .tuner = &msp_tuner_ops,
685  .audio = &msp_audio_ops,
686 };
687 
688 /* ----------------------------------------------------------------------- */
689 
690 static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
691 {
692  struct msp_state *state;
693  struct v4l2_subdev *sd;
694  struct v4l2_ctrl_handler *hdl;
695  int (*thread_func)(void *data) = NULL;
696  int msp_hard;
697  int msp_family;
698  int msp_revision;
699  int msp_product, msp_prod_hi, msp_prod_lo;
700  int msp_rom;
701 
702  if (!id)
703  strlcpy(client->name, "msp3400", sizeof(client->name));
704 
705  if (msp_reset(client) == -1) {
706  v4l_dbg(1, msp_debug, client, "msp3400 not found\n");
707  return -ENODEV;
708  }
709 
710  state = kzalloc(sizeof(*state), GFP_KERNEL);
711  if (!state)
712  return -ENOMEM;
713 
714  sd = &state->sd;
715  v4l2_i2c_subdev_init(sd, client, &msp_ops);
716 
717  state->v4l2_std = V4L2_STD_NTSC;
718  state->detected_std = V4L2_STD_ALL;
719  state->audmode = V4L2_TUNER_MODE_STEREO;
720  state->input = -1;
721  state->i2s_mode = 0;
722  init_waitqueue_head(&state->wq);
723  /* These are the reset input/output positions */
724  state->route_in = MSP_INPUT_DEFAULT;
725  state->route_out = MSP_OUTPUT_DEFAULT;
726 
727  state->rev1 = msp_read_dsp(client, 0x1e);
728  if (state->rev1 != -1)
729  state->rev2 = msp_read_dsp(client, 0x1f);
730  v4l_dbg(1, msp_debug, client, "rev1=0x%04x, rev2=0x%04x\n",
731  state->rev1, state->rev2);
732  if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
733  v4l_dbg(1, msp_debug, client,
734  "not an msp3400 (cannot read chip version)\n");
735  kfree(state);
736  return -ENODEV;
737  }
738 
739  msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
740  msp_product = (state->rev2 >> 8) & 0xff;
741  msp_prod_hi = msp_product / 10;
742  msp_prod_lo = msp_product % 10;
743  msp_revision = (state->rev1 & 0x0f) + '@';
744  msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
745  msp_rom = state->rev2 & 0x1f;
746  /* Rev B=2, C=3, D=4, G=7 */
747  state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
748  msp_revision - '@';
749 
750  /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
751  state->has_nicam =
752  msp_prod_hi == 1 || msp_prod_hi == 5;
753  /* Has radio support: was added with revision G */
754  state->has_radio =
755  msp_revision >= 'G';
756  /* Has headphones output: not for stripped down products */
757  state->has_headphones =
758  msp_prod_lo < 5;
759  /* Has scart2 input: not in stripped down products of the '3' family */
760  state->has_scart2 =
761  msp_family >= 4 || msp_prod_lo < 7;
762  /* Has scart3 input: not in stripped down products of the '3' family */
763  state->has_scart3 =
764  msp_family >= 4 || msp_prod_lo < 5;
765  /* Has scart4 input: not in pre D revisions, not in stripped D revs */
766  state->has_scart4 =
767  msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
768  /* Has scart2 output: not in stripped down products of
769  * the '3' family */
770  state->has_scart2_out =
771  msp_family >= 4 || msp_prod_lo < 5;
772  /* Has scart2 a volume control? Not in pre-D revisions. */
773  state->has_scart2_out_volume =
774  msp_revision > 'C' && state->has_scart2_out;
775  /* Has a configurable i2s out? */
776  state->has_i2s_conf =
777  msp_revision >= 'G' && msp_prod_lo < 7;
778  /* Has subwoofer output: not in pre-D revs and not in stripped down
779  * products */
780  state->has_subwoofer =
781  msp_revision >= 'D' && msp_prod_lo < 5;
782  /* Has soundprocessing (bass/treble/balance/loudness/equalizer):
783  * not in stripped down products */
784  state->has_sound_processing =
785  msp_prod_lo < 7;
786  /* Has Virtual Dolby Surround: only in msp34x1 */
787  state->has_virtual_dolby_surround =
788  msp_revision == 'G' && msp_prod_lo == 1;
789  /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
790  state->has_dolby_pro_logic =
791  msp_revision == 'G' && msp_prod_lo == 2;
792  /* The msp343xG supports BTSC only and cannot do Automatic Standard
793  * Detection. */
794  state->force_btsc =
795  msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
796 
797  state->opmode = opmode;
798  if (state->opmode == OPMODE_AUTO) {
799  /* MSP revision G and up have both autodetect and autoselect */
800  if (msp_revision >= 'G')
801  state->opmode = OPMODE_AUTOSELECT;
802  /* MSP revision D and up have autodetect */
803  else if (msp_revision >= 'D')
804  state->opmode = OPMODE_AUTODETECT;
805  else
806  state->opmode = OPMODE_MANUAL;
807  }
808 
809  hdl = &state->hdl;
810  v4l2_ctrl_handler_init(hdl, 6);
811  if (state->has_sound_processing) {
812  v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
813  V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
814  v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
815  V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
816  v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
817  V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
818  }
819  state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
820  V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
821  v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
822  V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
823  state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
824  V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
825  sd->ctrl_handler = hdl;
826  if (hdl->error) {
827  int err = hdl->error;
828 
829  v4l2_ctrl_handler_free(hdl);
830  kfree(state);
831  return err;
832  }
833 
834  v4l2_ctrl_cluster(2, &state->volume);
835  v4l2_ctrl_handler_setup(hdl);
836 
837  /* hello world :-) */
838  v4l_info(client, "MSP%d4%02d%c-%c%d found @ 0x%x (%s)\n",
839  msp_family, msp_product,
840  msp_revision, msp_hard, msp_rom,
841  client->addr << 1, client->adapter->name);
842  v4l_info(client, "%s ", client->name);
843  if (state->has_nicam && state->has_radio)
844  printk(KERN_CONT "supports nicam and radio, ");
845  else if (state->has_nicam)
846  printk(KERN_CONT "supports nicam, ");
847  else if (state->has_radio)
848  printk(KERN_CONT "supports radio, ");
849  printk(KERN_CONT "mode is ");
850 
851  /* version-specific initialization */
852  switch (state->opmode) {
853  case OPMODE_MANUAL:
854  printk(KERN_CONT "manual");
855  thread_func = msp3400c_thread;
856  break;
857  case OPMODE_AUTODETECT:
858  printk(KERN_CONT "autodetect");
859  thread_func = msp3410d_thread;
860  break;
861  case OPMODE_AUTOSELECT:
862  printk(KERN_CONT "autodetect and autoselect");
863  thread_func = msp34xxg_thread;
864  break;
865  }
866  printk(KERN_CONT "\n");
867 
868  /* startup control thread if needed */
869  if (thread_func) {
870  state->kthread = kthread_run(thread_func, client, "msp34xx");
871 
872  if (IS_ERR(state->kthread))
873  v4l_warn(client, "kernel_thread() failed\n");
874  msp_wake_thread(client);
875  }
876  return 0;
877 }
878 
879 static int msp_remove(struct i2c_client *client)
880 {
881  struct msp_state *state = to_state(i2c_get_clientdata(client));
882 
883  v4l2_device_unregister_subdev(&state->sd);
884  /* shutdown control thread */
885  if (state->kthread) {
886  state->restart = 1;
887  kthread_stop(state->kthread);
888  }
889  msp_reset(client);
890 
891  v4l2_ctrl_handler_free(&state->hdl);
892  kfree(state);
893  return 0;
894 }
895 
896 /* ----------------------------------------------------------------------- */
897 
898 static const struct dev_pm_ops msp3400_pm_ops = {
899  SET_SYSTEM_SLEEP_PM_OPS(msp_suspend, msp_resume)
900 };
901 
902 static const struct i2c_device_id msp_id[] = {
903  { "msp3400", 0 },
904  { }
905 };
906 MODULE_DEVICE_TABLE(i2c, msp_id);
907 
908 static struct i2c_driver msp_driver = {
909  .driver = {
910  .owner = THIS_MODULE,
911  .name = "msp3400",
912  .pm = &msp3400_pm_ops,
913  },
914  .probe = msp_probe,
915  .remove = msp_remove,
916  .id_table = msp_id,
917 };
918 
919 module_i2c_driver(msp_driver);
920 
921 /*
922  * Overrides for Emacs so that we follow Linus's tabbing style.
923  * ---------------------------------------------------------------------------
924  * Local variables:
925  * c-basic-offset: 8
926  * End:
927  */
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