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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / media / video / msp3400-driver.c
blobd7cd0f633f63905c77095b959efa724b7b5ffebc
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/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 { client->addr, I2C_M_IGNORE_NAK, 3, reset_off },
123 { client->addr, I2C_M_IGNORE_NAK, 3, reset_on },
124 };
125 struct i2c_msg test[2] = {
126 { client->addr, 0, 3, write },
127 { client->addr, I2C_M_RD, 2, read },
128 };
129
130 v4l_dbg(3, msp_debug, client, "msp_reset\n");
131 if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
132 i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
133 i2c_transfer(client->adapter, test, 2) != 2) {
134 v4l_err(client, "chip reset failed\n");
135 return -1;
136 }
137 return 0;
138 }
139
140 static int msp_read(struct i2c_client *client, int dev, int addr)
141 {
142 int err, retval;
143 u8 write[3];
144 u8 read[2];
145 struct i2c_msg msgs[2] = {
146 { client->addr, 0, 3, write },
147 { client->addr, I2C_M_RD, 2, read }
148 };
149
150 write[0] = dev + 1;
151 write[1] = addr >> 8;
152 write[2] = addr & 0xff;
153
154 for (err = 0; err < 3; err++) {
155 if (i2c_transfer(client->adapter, msgs, 2) == 2)
156 break;
157 v4l_warn(client, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
158 dev, addr);
159 schedule_timeout_interruptible(msecs_to_jiffies(10));
160 }
161 if (err == 3) {
162 v4l_warn(client, "resetting chip, sound will go off.\n");
163 msp_reset(client);
164 return -1;
165 }
166 retval = read[0] << 8 | read[1];
167 v4l_dbg(3, msp_debug, client, "msp_read(0x%x, 0x%x): 0x%x\n",
168 dev, addr, retval);
169 return retval;
170 }
171
172 int msp_read_dem(struct i2c_client *client, int addr)
173 {
174 return msp_read(client, I2C_MSP_DEM, addr);
175 }
176
177 int msp_read_dsp(struct i2c_client *client, int addr)
178 {
179 return msp_read(client, I2C_MSP_DSP, addr);
180 }
181
182 static int msp_write(struct i2c_client *client, int dev, int addr, int val)
183 {
184 int err;
185 u8 buffer[5];
186
187 buffer[0] = dev;
188 buffer[1] = addr >> 8;
189 buffer[2] = addr & 0xff;
190 buffer[3] = val >> 8;
191 buffer[4] = val & 0xff;
192
193 v4l_dbg(3, msp_debug, client, "msp_write(0x%x, 0x%x, 0x%x)\n",
194 dev, addr, val);
195 for (err = 0; err < 3; err++) {
196 if (i2c_master_send(client, buffer, 5) == 5)
197 break;
198 v4l_warn(client, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
199 dev, addr);
200 schedule_timeout_interruptible(msecs_to_jiffies(10));
201 }
202 if (err == 3) {
203 v4l_warn(client, "resetting chip, sound will go off.\n");
204 msp_reset(client);
205 return -1;
206 }
207 return 0;
208 }
209
210 int msp_write_dem(struct i2c_client *client, int addr, int val)
211 {
212 return msp_write(client, I2C_MSP_DEM, addr, val);
213 }
214
215 int msp_write_dsp(struct i2c_client *client, int addr, int val)
216 {
217 return msp_write(client, I2C_MSP_DSP, addr, val);
218 }
219
220 /* ----------------------------------------------------------------------- *
221 * bits 9 8 5 - SCART DSP input Select:
222 * 0 0 0 - SCART 1 to DSP input (reset position)
223 * 0 1 0 - MONO to DSP input
224 * 1 0 0 - SCART 2 to DSP input
225 * 1 1 1 - Mute DSP input
226 *
227 * bits 11 10 6 - SCART 1 Output Select:
228 * 0 0 0 - undefined (reset position)
229 * 0 1 0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
230 * 1 0 0 - MONO input to SCART 1 Output
231 * 1 1 0 - SCART 1 DA to SCART 1 Output
232 * 0 0 1 - SCART 2 DA to SCART 1 Output
233 * 0 1 1 - SCART 1 Input to SCART 1 Output
234 * 1 1 1 - Mute SCART 1 Output
235 *
236 * bits 13 12 7 - SCART 2 Output Select (for devices with 2 Output SCART):
237 * 0 0 0 - SCART 1 DA to SCART 2 Output (reset position)
238 * 0 1 0 - SCART 1 Input to SCART 2 Output
239 * 1 0 0 - MONO input to SCART 2 Output
240 * 0 0 1 - SCART 2 DA to SCART 2 Output
241 * 0 1 1 - SCART 2 Input to SCART 2 Output
242 * 1 1 0 - Mute SCART 2 Output
243 *
244 * Bits 4 to 0 should be zero.
245 * ----------------------------------------------------------------------- */
246
247 static int scarts[3][9] = {
248 /* MASK IN1 IN2 IN3 IN4 IN1_DA IN2_DA MONO MUTE */
249 /* SCART DSP Input select */
250 { 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1, -1, 0x0100, 0x0320 },
251 /* SCART1 Output select */
252 { 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
253 /* SCART2 Output select */
254 { 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
255 };
256
257 static char *scart_names[] = {
258 "in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
259 };
260
261 void msp_set_scart(struct i2c_client *client, int in, int out)
262 {
263 struct msp_state *state = to_state(i2c_get_clientdata(client));
264
265 state->in_scart = in;
266
267 if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
268 if (-1 == scarts[out][in + 1])
269 return;
270
271 state->acb &= ~scarts[out][0];
272 state->acb |= scarts[out][in + 1];
273 } else
274 state->acb = 0xf60; /* Mute Input and SCART 1 Output */
275
276 v4l_dbg(1, msp_debug, client, "scart switch: %s => %d (ACB=0x%04x)\n",
277 scart_names[in], out, state->acb);
278 msp_write_dsp(client, 0x13, state->acb);
279
280 /* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
281 if (state->has_i2s_conf)
282 msp_write_dem(client, 0x40, state->i2s_mode);
283 }
284
285 /* ------------------------------------------------------------------------ */
286
287 static void msp_wake_thread(struct i2c_client *client)
288 {
289 struct msp_state *state = to_state(i2c_get_clientdata(client));
290
291 if (NULL == state->kthread)
292 return;
293 state->watch_stereo = 0;
294 state->restart = 1;
295 wake_up_interruptible(&state->wq);
296 }
297
298 int msp_sleep(struct msp_state *state, int timeout)
299 {
300 DECLARE_WAITQUEUE(wait, current);
301
302 add_wait_queue(&state->wq, &wait);
303 if (!kthread_should_stop()) {
304 if (timeout < 0) {
305 set_current_state(TASK_INTERRUPTIBLE);
306 schedule();
307 } else {
308 schedule_timeout_interruptible
309 (msecs_to_jiffies(timeout));
310 }
311 }
312
313 remove_wait_queue(&state->wq, &wait);
314 try_to_freeze();
315 return state->restart;
316 }
317
318 /* ------------------------------------------------------------------------ */
319
320 static int msp_s_ctrl(struct v4l2_ctrl *ctrl)
321 {
322 struct msp_state *state = ctrl_to_state(ctrl);
323 struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
324 int val = ctrl->val;
325
326 switch (ctrl->id) {
327 case V4L2_CID_AUDIO_VOLUME: {
328 /* audio volume cluster */
329 int reallymuted = state->muted->val | state->scan_in_progress;
330
331 if (!reallymuted)
332 val = (val * 0x7f / 65535) << 8;
333
334 v4l_dbg(1, msp_debug, client, "mute=%s scanning=%s volume=%d\n",
335 state->muted->val ? "on" : "off",
336 state->scan_in_progress ? "yes" : "no",
337 state->volume->val);
338
339 msp_write_dsp(client, 0x0000, val);
340 msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
341 if (state->has_scart2_out_volume)
342 msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
343 if (state->has_headphones)
344 msp_write_dsp(client, 0x0006, val);
345 break;
346 }
347
348 case V4L2_CID_AUDIO_BASS:
349 val = ((val - 32768) * 0x60 / 65535) << 8;
350 msp_write_dsp(client, 0x0002, val);
351 if (state->has_headphones)
352 msp_write_dsp(client, 0x0031, val);
353 break;
354
355 case V4L2_CID_AUDIO_TREBLE:
356 val = ((val - 32768) * 0x60 / 65535) << 8;
357 msp_write_dsp(client, 0x0003, val);
358 if (state->has_headphones)
359 msp_write_dsp(client, 0x0032, val);
360 break;
361
362 case V4L2_CID_AUDIO_LOUDNESS:
363 val = val ? ((5 * 4) << 8) : 0;
364 msp_write_dsp(client, 0x0004, val);
365 if (state->has_headphones)
366 msp_write_dsp(client, 0x0033, val);
367 break;
368
369 case V4L2_CID_AUDIO_BALANCE:
370 val = (u8)((val / 256) - 128);
371 msp_write_dsp(client, 0x0001, val << 8);
372 if (state->has_headphones)
373 msp_write_dsp(client, 0x0030, val << 8);
374 break;
375
376 default:
377 return -EINVAL;
378 }
379 return 0;
380 }
381
382 void msp_update_volume(struct msp_state *state)
383 {
384 /* Force an update of the volume/mute cluster */
385 v4l2_ctrl_lock(state->volume);
386 state->volume->val = state->volume->cur.val;
387 state->muted->val = state->muted->cur.val;
388 msp_s_ctrl(state->volume);
389 v4l2_ctrl_unlock(state->volume);
390 }
391
392 /* --- v4l2 ioctls --- */
393 static int msp_s_radio(struct v4l2_subdev *sd)
394 {
395 struct msp_state *state = to_state(sd);
396 struct i2c_client *client = v4l2_get_subdevdata(sd);
397
398 if (state->radio)
399 return 0;
400 state->radio = 1;
401 v4l_dbg(1, msp_debug, client, "switching to radio mode\n");
402 state->watch_stereo = 0;
403 switch (state->opmode) {
404 case OPMODE_MANUAL:
405 /* set msp3400 to FM radio mode */
406 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
407 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
408 MSP_CARRIER(10.7));
409 msp_update_volume(state);
410 break;
411 case OPMODE_AUTODETECT:
412 case OPMODE_AUTOSELECT:
413 /* the thread will do for us */
414 msp_wake_thread(client);
415 break;
416 }
417 return 0;
418 }
419
420 static int msp_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq)
421 {
422 struct i2c_client *client = v4l2_get_subdevdata(sd);
423
424 /* new channel -- kick audio carrier scan */
425 msp_wake_thread(client);
426 return 0;
427 }
428
429 static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id)
430 {
431 struct msp_state *state = to_state(sd);
432 struct i2c_client *client = v4l2_get_subdevdata(sd);
433
434 *id &= state->detected_std;
435
436 v4l_dbg(2, msp_debug, client,
437 "detected standard: %s(0x%08Lx)\n",
438 msp_standard_std_name(state->std), state->detected_std);
439
440 return 0;
441 }
442
443 static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
444 {
445 struct msp_state *state = to_state(sd);
446 struct i2c_client *client = v4l2_get_subdevdata(sd);
447 int update = state->radio || state->v4l2_std != id;
448
449 state->v4l2_std = id;
450 state->radio = 0;
451 if (update)
452 msp_wake_thread(client);
453 return 0;
454 }
455
456 static int msp_s_routing(struct v4l2_subdev *sd,
457 u32 input, u32 output, u32 config)
458 {
459 struct msp_state *state = to_state(sd);
460 struct i2c_client *client = v4l2_get_subdevdata(sd);
461 int tuner = (input >> 3) & 1;
462 int sc_in = input & 0x7;
463 int sc1_out = output & 0xf;
464 int sc2_out = (output >> 4) & 0xf;
465 u16 val, reg;
466 int i;
467 int extern_input = 1;
468
469 if (state->route_in == input && state->route_out == output)
470 return 0;
471 state->route_in = input;
472 state->route_out = output;
473 /* check if the tuner input is used */
474 for (i = 0; i < 5; i++) {
475 if (((input >> (4 + i * 4)) & 0xf) == 0)
476 extern_input = 0;
477 }
478 state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
479 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
480 msp_set_scart(client, sc_in, 0);
481 msp_set_scart(client, sc1_out, 1);
482 msp_set_scart(client, sc2_out, 2);
483 msp_set_audmode(client);
484 reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
485 val = msp_read_dem(client, reg);
486 msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
487 /* wake thread when a new input is chosen */
488 msp_wake_thread(client);
489 return 0;
490 }
491
492 static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
493 {
494 struct msp_state *state = to_state(sd);
495 struct i2c_client *client = v4l2_get_subdevdata(sd);
496
497 if (vt->type != V4L2_TUNER_ANALOG_TV)
498 return 0;
499 if (!state->radio) {
500 if (state->opmode == OPMODE_AUTOSELECT)
501 msp_detect_stereo(client);
502 vt->rxsubchans = state->rxsubchans;
503 }
504 vt->audmode = state->audmode;
505 vt->capability |= V4L2_TUNER_CAP_STEREO |
506 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
507 return 0;
508 }
509
510 static int msp_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
511 {
512 struct msp_state *state = to_state(sd);
513 struct i2c_client *client = v4l2_get_subdevdata(sd);
514
515 if (state->radio) /* TODO: add mono/stereo support for radio */
516 return 0;
517 if (state->audmode == vt->audmode)
518 return 0;
519 state->audmode = vt->audmode;
520 /* only set audmode */
521 msp_set_audmode(client);
522 return 0;
523 }
524
525 static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
526 {
527 struct msp_state *state = to_state(sd);
528 struct i2c_client *client = v4l2_get_subdevdata(sd);
529
530 v4l_dbg(1, msp_debug, client, "Setting I2S speed to %d\n", freq);
531
532 switch (freq) {
533 case 1024000:
534 state->i2s_mode = 0;
535 break;
536 case 2048000:
537 state->i2s_mode = 1;
538 break;
539 default:
540 return -EINVAL;
541 }
542 return 0;
543 }
544
545 static int msp_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
546 {
547 struct msp_state *state = to_state(sd);
548 struct i2c_client *client = v4l2_get_subdevdata(sd);
549
550 return v4l2_chip_ident_i2c_client(client, chip, state->ident,
551 (state->rev1 << 16) | state->rev2);
552 }
553
554 static int msp_log_status(struct v4l2_subdev *sd)
555 {
556 struct msp_state *state = to_state(sd);
557 struct i2c_client *client = v4l2_get_subdevdata(sd);
558 const char *p;
559 char prefix[V4L2_SUBDEV_NAME_SIZE + 20];
560
561 if (state->opmode == OPMODE_AUTOSELECT)
562 msp_detect_stereo(client);
563 v4l_info(client, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
564 client->name, state->rev1, state->rev2);
565 snprintf(prefix, sizeof(prefix), "%s: Audio: ", sd->name);
566 v4l2_ctrl_handler_log_status(&state->hdl, prefix);
567 switch (state->mode) {
568 case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
569 case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
570 case MSP_MODE_FM_TERRA: p = "Terrestrial FM-mono/stereo"; break;
571 case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
572 case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
573 case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
574 case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
575 case MSP_MODE_BTSC: p = "BTSC"; break;
576 case MSP_MODE_EXTERN: p = "External input"; break;
577 default: p = "unknown"; break;
578 }
579 if (state->mode == MSP_MODE_EXTERN) {
580 v4l_info(client, "Mode: %s\n", p);
581 } else if (state->opmode == OPMODE_MANUAL) {
582 v4l_info(client, "Mode: %s (%s%s)\n", p,
583 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
584 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
585 } else {
586 if (state->opmode == OPMODE_AUTODETECT)
587 v4l_info(client, "Mode: %s\n", p);
588 v4l_info(client, "Standard: %s (%s%s)\n",
589 msp_standard_std_name(state->std),
590 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
591 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
592 }
593 v4l_info(client, "Audmode: 0x%04x\n", state->audmode);
594 v4l_info(client, "Routing: 0x%08x (input) 0x%08x (output)\n",
595 state->route_in, state->route_out);
596 v4l_info(client, "ACB: 0x%04x\n", state->acb);
597 return 0;
598 }
599
600 static int msp_suspend(struct i2c_client *client, pm_message_t state)
601 {
602 v4l_dbg(1, msp_debug, client, "suspend\n");
603 msp_reset(client);
604 return 0;
605 }
606
607 static int msp_resume(struct i2c_client *client)
608 {
609 v4l_dbg(1, msp_debug, client, "resume\n");
610 msp_wake_thread(client);
611 return 0;
612 }
613
614 /* ----------------------------------------------------------------------- */
615
616 static const struct v4l2_ctrl_ops msp_ctrl_ops = {
617 .s_ctrl = msp_s_ctrl,
618 };
619
620 static const struct v4l2_subdev_core_ops msp_core_ops = {
621 .log_status = msp_log_status,
622 .g_chip_ident = msp_g_chip_ident,
623 .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
624 .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
625 .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
626 .g_ctrl = v4l2_subdev_g_ctrl,
627 .s_ctrl = v4l2_subdev_s_ctrl,
628 .queryctrl = v4l2_subdev_queryctrl,
629 .querymenu = v4l2_subdev_querymenu,
630 .s_std = msp_s_std,
631 };
632
633 static const struct v4l2_subdev_video_ops msp_video_ops = {
634 .querystd = msp_querystd,
635 };
636
637 static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
638 .s_frequency = msp_s_frequency,
639 .g_tuner = msp_g_tuner,
640 .s_tuner = msp_s_tuner,
641 .s_radio = msp_s_radio,
642 };
643
644 static const struct v4l2_subdev_audio_ops msp_audio_ops = {
645 .s_routing = msp_s_routing,
646 .s_i2s_clock_freq = msp_s_i2s_clock_freq,
647 };
648
649 static const struct v4l2_subdev_ops msp_ops = {
650 .core = &msp_core_ops,
651 .video = &msp_video_ops,
652 .tuner = &msp_tuner_ops,
653 .audio = &msp_audio_ops,
654 };
655
656 /* ----------------------------------------------------------------------- */
657
658 static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
659 {
660 struct msp_state *state;
661 struct v4l2_subdev *sd;
662 struct v4l2_ctrl_handler *hdl;
663 int (*thread_func)(void *data) = NULL;
664 int msp_hard;
665 int msp_family;
666 int msp_revision;
667 int msp_product, msp_prod_hi, msp_prod_lo;
668 int msp_rom;
669
670 if (!id)
671 strlcpy(client->name, "msp3400", sizeof(client->name));
672
673 if (msp_reset(client) == -1) {
674 v4l_dbg(1, msp_debug, client, "msp3400 not found\n");
675 return -ENODEV;
676 }
677
678 state = kzalloc(sizeof(*state), GFP_KERNEL);
679 if (!state)
680 return -ENOMEM;
681
682 sd = &state->sd;
683 v4l2_i2c_subdev_init(sd, client, &msp_ops);
684
685 state->v4l2_std = V4L2_STD_NTSC;
686 state->detected_std = V4L2_STD_ALL;
687 state->audmode = V4L2_TUNER_MODE_STEREO;
688 state->input = -1;
689 state->i2s_mode = 0;
690 init_waitqueue_head(&state->wq);
691 /* These are the reset input/output positions */
692 state->route_in = MSP_INPUT_DEFAULT;
693 state->route_out = MSP_OUTPUT_DEFAULT;
694
695 state->rev1 = msp_read_dsp(client, 0x1e);
696 if (state->rev1 != -1)
697 state->rev2 = msp_read_dsp(client, 0x1f);
698 v4l_dbg(1, msp_debug, client, "rev1=0x%04x, rev2=0x%04x\n",
699 state->rev1, state->rev2);
700 if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
701 v4l_dbg(1, msp_debug, client,
702 "not an msp3400 (cannot read chip version)\n");
703 kfree(state);
704 return -ENODEV;
705 }
706
707 msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
708 msp_product = (state->rev2 >> 8) & 0xff;
709 msp_prod_hi = msp_product / 10;
710 msp_prod_lo = msp_product % 10;
711 msp_revision = (state->rev1 & 0x0f) + '@';
712 msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
713 msp_rom = state->rev2 & 0x1f;
714 /* Rev B=2, C=3, D=4, G=7 */
715 state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
716 msp_revision - '@';
717
718 /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
719 state->has_nicam =
720 msp_prod_hi == 1 || msp_prod_hi == 5;
721 /* Has radio support: was added with revision G */
722 state->has_radio =
723 msp_revision >= 'G';
724 /* Has headphones output: not for stripped down products */
725 state->has_headphones =
726 msp_prod_lo < 5;
727 /* Has scart2 input: not in stripped down products of the '3' family */
728 state->has_scart2 =
729 msp_family >= 4 || msp_prod_lo < 7;
730 /* Has scart3 input: not in stripped down products of the '3' family */
731 state->has_scart3 =
732 msp_family >= 4 || msp_prod_lo < 5;
733 /* Has scart4 input: not in pre D revisions, not in stripped D revs */
734 state->has_scart4 =
735 msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
736 /* Has scart2 output: not in stripped down products of
737 * the '3' family */
738 state->has_scart2_out =
739 msp_family >= 4 || msp_prod_lo < 5;
740 /* Has scart2 a volume control? Not in pre-D revisions. */
741 state->has_scart2_out_volume =
742 msp_revision > 'C' && state->has_scart2_out;
743 /* Has a configurable i2s out? */
744 state->has_i2s_conf =
745 msp_revision >= 'G' && msp_prod_lo < 7;
746 /* Has subwoofer output: not in pre-D revs and not in stripped down
747 * products */
748 state->has_subwoofer =
749 msp_revision >= 'D' && msp_prod_lo < 5;
750 /* Has soundprocessing (bass/treble/balance/loudness/equalizer):
751 * not in stripped down products */
752 state->has_sound_processing =
753 msp_prod_lo < 7;
754 /* Has Virtual Dolby Surround: only in msp34x1 */
755 state->has_virtual_dolby_surround =
756 msp_revision == 'G' && msp_prod_lo == 1;
757 /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
758 state->has_dolby_pro_logic =
759 msp_revision == 'G' && msp_prod_lo == 2;
760 /* The msp343xG supports BTSC only and cannot do Automatic Standard
761 * Detection. */
762 state->force_btsc =
763 msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
764
765 state->opmode = opmode;
766 if (state->opmode == OPMODE_AUTO) {
767 /* MSP revision G and up have both autodetect and autoselect */
768 if (msp_revision >= 'G')
769 state->opmode = OPMODE_AUTOSELECT;
770 /* MSP revision D and up have autodetect */
771 else if (msp_revision >= 'D')
772 state->opmode = OPMODE_AUTODETECT;
773 else
774 state->opmode = OPMODE_MANUAL;
775 }
776
777 hdl = &state->hdl;
778 v4l2_ctrl_handler_init(hdl, 6);
779 if (state->has_sound_processing) {
780 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
781 V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
782 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
783 V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
784 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
785 V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
786 }
787 state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
788 V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
789 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
790 V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
791 state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
792 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
793 sd->ctrl_handler = hdl;
794 if (hdl->error) {
795 int err = hdl->error;
796
797 v4l2_ctrl_handler_free(hdl);
798 kfree(state);
799 return err;
800 }
801
802 v4l2_ctrl_cluster(2, &state->volume);
803 v4l2_ctrl_handler_setup(hdl);
804
805 /* hello world :-) */
806 v4l_info(client, "MSP%d4%02d%c-%c%d found @ 0x%x (%s)\n",
807 msp_family, msp_product,
808 msp_revision, msp_hard, msp_rom,
809 client->addr << 1, client->adapter->name);
810 v4l_info(client, "%s ", client->name);
811 if (state->has_nicam && state->has_radio)
812 printk(KERN_CONT "supports nicam and radio, ");
813 else if (state->has_nicam)
814 printk(KERN_CONT "supports nicam, ");
815 else if (state->has_radio)
816 printk(KERN_CONT "supports radio, ");
817 printk(KERN_CONT "mode is ");
818
819 /* version-specific initialization */
820 switch (state->opmode) {
821 case OPMODE_MANUAL:
822 printk(KERN_CONT "manual");
823 thread_func = msp3400c_thread;
824 break;
825 case OPMODE_AUTODETECT:
826 printk(KERN_CONT "autodetect");
827 thread_func = msp3410d_thread;
828 break;
829 case OPMODE_AUTOSELECT:
830 printk(KERN_CONT "autodetect and autoselect");
831 thread_func = msp34xxg_thread;
832 break;
833 }
834 printk(KERN_CONT "\n");
835
836 /* startup control thread if needed */
837 if (thread_func) {
838 state->kthread = kthread_run(thread_func, client, "msp34xx");
839
840 if (IS_ERR(state->kthread))
841 v4l_warn(client, "kernel_thread() failed\n");
842 msp_wake_thread(client);
843 }
844 return 0;
845 }
846
847 static int msp_remove(struct i2c_client *client)
848 {
849 struct msp_state *state = to_state(i2c_get_clientdata(client));
850
851 v4l2_device_unregister_subdev(&state->sd);
852 /* shutdown control thread */
853 if (state->kthread) {
854 state->restart = 1;
855 kthread_stop(state->kthread);
856 }
857 msp_reset(client);
858
859 v4l2_ctrl_handler_free(&state->hdl);
860 kfree(state);
861 return 0;
862 }
863
864 /* ----------------------------------------------------------------------- */
865
866 static const struct i2c_device_id msp_id[] = {
867 { "msp3400", 0 },
868 { }
869 };
870 MODULE_DEVICE_TABLE(i2c, msp_id);
871
872 static struct i2c_driver msp_driver = {
873 .driver = {
874 .owner = THIS_MODULE,
875 .name = "msp3400",
876 },
877 .probe = msp_probe,
878 .remove = msp_remove,
879 .suspend = msp_suspend,
880 .resume = msp_resume,
881 .id_table = msp_id,
882 };
883
884 static __init int init_msp(void)
885 {
886 return i2c_add_driver(&msp_driver);
887 }
888
889 static __exit void exit_msp(void)
890 {
891 i2c_del_driver(&msp_driver);
892 }
893
894 module_init(init_msp);
895 module_exit(exit_msp);
896
897 /*
898 * Overrides for Emacs so that we follow Linus's tabbing style.
899 * ---------------------------------------------------------------------------
900 * Local variables:
901 * c-basic-offset: 8
902 * End:
903 */