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sh_eth: R8A7740 supports packet shecksumming
[linux/fpc-iii.git] / drivers / media / i2c / msp3400-driver.c
blob201a9800ea52a8e8860acec804ac7a989e54b596
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/drv-intf/msp3400.h>
60 #include <media/i2c/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 dev_dbg_lvl(&client->dev, 3, msp_debug, "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 dev_err(&client->dev, "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 dev_warn(&client->dev, "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 dev_warn(&client->dev, "resetting chip, sound will go off.\n");
191 msp_reset(client);
192 return -1;
193 }
194 retval = read[0] << 8 | read[1];
195 dev_dbg_lvl(&client->dev, 3, msp_debug, "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 dev_dbg_lvl(&client->dev, 3, msp_debug, "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 dev_warn(&client->dev, "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 dev_warn(&client->dev, "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 dev_dbg_lvl(&client->dev, 1, msp_debug, "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 dev_dbg_lvl(&client->dev, 1, msp_debug, "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 dev_dbg_lvl(&client->dev, 1, msp_debug, "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, const 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 dev_dbg_lvl(&client->dev, 2, msp_debug,
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, const 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 dev_dbg_lvl(&client->dev, 1, msp_debug, "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_log_status(struct v4l2_subdev *sd)
574 {
575 struct msp_state *state = to_state(sd);
576 struct i2c_client *client = v4l2_get_subdevdata(sd);
577 const char *p;
578 char prefix[V4L2_SUBDEV_NAME_SIZE + 20];
579
580 if (state->opmode == OPMODE_AUTOSELECT)
581 msp_detect_stereo(client);
582 dev_info(&client->dev, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
583 client->name, state->rev1, state->rev2);
584 snprintf(prefix, sizeof(prefix), "%s: Audio: ", sd->name);
585 v4l2_ctrl_handler_log_status(&state->hdl, prefix);
586 switch (state->mode) {
587 case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
588 case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
589 case MSP_MODE_FM_TERRA: p = "Terrestrial FM-mono/stereo"; break;
590 case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
591 case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
592 case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
593 case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
594 case MSP_MODE_BTSC: p = "BTSC"; break;
595 case MSP_MODE_EXTERN: p = "External input"; break;
596 default: p = "unknown"; break;
597 }
598 if (state->mode == MSP_MODE_EXTERN) {
599 dev_info(&client->dev, "Mode: %s\n", p);
600 } else if (state->opmode == OPMODE_MANUAL) {
601 dev_info(&client->dev, "Mode: %s (%s%s)\n", p,
602 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
603 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
604 } else {
605 if (state->opmode == OPMODE_AUTODETECT)
606 dev_info(&client->dev, "Mode: %s\n", p);
607 dev_info(&client->dev, "Standard: %s (%s%s)\n",
608 msp_standard_std_name(state->std),
609 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
610 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
611 }
612 dev_info(&client->dev, "Audmode: 0x%04x\n", state->audmode);
613 dev_info(&client->dev, "Routing: 0x%08x (input) 0x%08x (output)\n",
614 state->route_in, state->route_out);
615 dev_info(&client->dev, "ACB: 0x%04x\n", state->acb);
616 return 0;
617 }
618
619 #ifdef CONFIG_PM_SLEEP
620 static int msp_suspend(struct device *dev)
621 {
622 struct i2c_client *client = to_i2c_client(dev);
623 dev_dbg_lvl(&client->dev, 1, msp_debug, "suspend\n");
624 msp_reset(client);
625 return 0;
626 }
627
628 static int msp_resume(struct device *dev)
629 {
630 struct i2c_client *client = to_i2c_client(dev);
631 dev_dbg_lvl(&client->dev, 1, msp_debug, "resume\n");
632 msp_wake_thread(client);
633 return 0;
634 }
635 #endif
636
637 /* ----------------------------------------------------------------------- */
638
639 static const struct v4l2_ctrl_ops msp_ctrl_ops = {
640 .s_ctrl = msp_s_ctrl,
641 };
642
643 static const struct v4l2_subdev_core_ops msp_core_ops = {
644 .log_status = msp_log_status,
645 };
646
647 static const struct v4l2_subdev_video_ops msp_video_ops = {
648 .s_std = msp_s_std,
649 .querystd = msp_querystd,
650 };
651
652 static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
653 .s_frequency = msp_s_frequency,
654 .g_tuner = msp_g_tuner,
655 .s_tuner = msp_s_tuner,
656 .s_radio = msp_s_radio,
657 };
658
659 static const struct v4l2_subdev_audio_ops msp_audio_ops = {
660 .s_routing = msp_s_routing,
661 .s_i2s_clock_freq = msp_s_i2s_clock_freq,
662 };
663
664 static const struct v4l2_subdev_ops msp_ops = {
665 .core = &msp_core_ops,
666 .video = &msp_video_ops,
667 .tuner = &msp_tuner_ops,
668 .audio = &msp_audio_ops,
669 };
670
671 /* ----------------------------------------------------------------------- */
672
673
674 static const char * const opmode_str[] = {
675 [OPMODE_MANUAL] = "manual",
676 [OPMODE_AUTODETECT] = "autodetect",
677 [OPMODE_AUTOSELECT] = "autodetect and autoselect",
678 };
679
680 static int msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
681 {
682 struct msp_state *state;
683 struct v4l2_subdev *sd;
684 struct v4l2_ctrl_handler *hdl;
685 int (*thread_func)(void *data) = NULL;
686 int msp_hard;
687 int msp_family;
688 int msp_revision;
689 int msp_product, msp_prod_hi, msp_prod_lo;
690 int msp_rom;
691 #if defined(CONFIG_MEDIA_CONTROLLER)
692 int ret;
693 #endif
694
695 if (!id)
696 strlcpy(client->name, "msp3400", sizeof(client->name));
697
698 if (msp_reset(client) == -1) {
699 dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 not found\n");
700 return -ENODEV;
701 }
702
703 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
704 if (!state)
705 return -ENOMEM;
706
707 sd = &state->sd;
708 v4l2_i2c_subdev_init(sd, client, &msp_ops);
709
710 #if defined(CONFIG_MEDIA_CONTROLLER)
711 state->pads[IF_AUD_DEC_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
712 state->pads[IF_AUD_DEC_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
713
714 sd->entity.function = MEDIA_ENT_F_IF_AUD_DECODER;
715
716 ret = media_entity_pads_init(&sd->entity, 2, state->pads);
717 if (ret < 0)
718 return ret;
719 #endif
720
721 state->v4l2_std = V4L2_STD_NTSC;
722 state->detected_std = V4L2_STD_ALL;
723 state->audmode = V4L2_TUNER_MODE_STEREO;
724 state->input = -1;
725 state->i2s_mode = 0;
726 init_waitqueue_head(&state->wq);
727 /* These are the reset input/output positions */
728 state->route_in = MSP_INPUT_DEFAULT;
729 state->route_out = MSP_OUTPUT_DEFAULT;
730
731 state->rev1 = msp_read_dsp(client, 0x1e);
732 if (state->rev1 != -1)
733 state->rev2 = msp_read_dsp(client, 0x1f);
734 dev_dbg_lvl(&client->dev, 1, msp_debug, "rev1=0x%04x, rev2=0x%04x\n",
735 state->rev1, state->rev2);
736 if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
737 dev_dbg_lvl(&client->dev, 1, msp_debug,
738 "not an msp3400 (cannot read chip version)\n");
739 return -ENODEV;
740 }
741
742 msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
743 msp_product = (state->rev2 >> 8) & 0xff;
744 msp_prod_hi = msp_product / 10;
745 msp_prod_lo = msp_product % 10;
746 msp_revision = (state->rev1 & 0x0f) + '@';
747 msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
748 msp_rom = state->rev2 & 0x1f;
749 /* Rev B=2, C=3, D=4, G=7 */
750 state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
751 msp_revision - '@';
752
753 /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
754 state->has_nicam =
755 msp_prod_hi == 1 || msp_prod_hi == 5;
756 /* Has radio support: was added with revision G */
757 state->has_radio =
758 msp_revision >= 'G';
759 /* Has headphones output: not for stripped down products */
760 state->has_headphones =
761 msp_prod_lo < 5;
762 /* Has scart2 input: not in stripped down products of the '3' family */
763 state->has_scart2 =
764 msp_family >= 4 || msp_prod_lo < 7;
765 /* Has scart3 input: not in stripped down products of the '3' family */
766 state->has_scart3 =
767 msp_family >= 4 || msp_prod_lo < 5;
768 /* Has scart4 input: not in pre D revisions, not in stripped D revs */
769 state->has_scart4 =
770 msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
771 /* Has scart2 output: not in stripped down products of
772 * the '3' family */
773 state->has_scart2_out =
774 msp_family >= 4 || msp_prod_lo < 5;
775 /* Has scart2 a volume control? Not in pre-D revisions. */
776 state->has_scart2_out_volume =
777 msp_revision > 'C' && state->has_scart2_out;
778 /* Has a configurable i2s out? */
779 state->has_i2s_conf =
780 msp_revision >= 'G' && msp_prod_lo < 7;
781 /* Has subwoofer output: not in pre-D revs and not in stripped down
782 * products */
783 state->has_subwoofer =
784 msp_revision >= 'D' && msp_prod_lo < 5;
785 /* Has soundprocessing (bass/treble/balance/loudness/equalizer):
786 * not in stripped down products */
787 state->has_sound_processing =
788 msp_prod_lo < 7;
789 /* Has Virtual Dolby Surround: only in msp34x1 */
790 state->has_virtual_dolby_surround =
791 msp_revision == 'G' && msp_prod_lo == 1;
792 /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
793 state->has_dolby_pro_logic =
794 msp_revision == 'G' && msp_prod_lo == 2;
795 /* The msp343xG supports BTSC only and cannot do Automatic Standard
796 * Detection. */
797 state->force_btsc =
798 msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
799
800 state->opmode = opmode;
801 if (state->opmode < OPMODE_MANUAL
802 || state->opmode > OPMODE_AUTOSELECT) {
803 /* MSP revision G and up have both autodetect and autoselect */
804 if (msp_revision >= 'G')
805 state->opmode = OPMODE_AUTOSELECT;
806 /* MSP revision D and up have autodetect */
807 else if (msp_revision >= 'D')
808 state->opmode = OPMODE_AUTODETECT;
809 else
810 state->opmode = OPMODE_MANUAL;
811 }
812
813 hdl = &state->hdl;
814 v4l2_ctrl_handler_init(hdl, 6);
815 if (state->has_sound_processing) {
816 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
817 V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
818 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
819 V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
820 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
821 V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
822 }
823 state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
824 V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
825 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
826 V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
827 state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
828 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
829 sd->ctrl_handler = hdl;
830 if (hdl->error) {
831 int err = hdl->error;
832
833 v4l2_ctrl_handler_free(hdl);
834 return err;
835 }
836
837 v4l2_ctrl_cluster(2, &state->volume);
838 v4l2_ctrl_handler_setup(hdl);
839
840 dev_info(&client->dev,
841 "MSP%d4%02d%c-%c%d found on %s: supports %s%s%s, mode is %s\n",
842 msp_family, msp_product,
843 msp_revision, msp_hard, msp_rom,
844 client->adapter->name,
845 (state->has_nicam) ? "nicam" : "",
846 (state->has_nicam && state->has_radio) ? " and " : "",
847 (state->has_radio) ? "radio" : "",
848 opmode_str[state->opmode]);
849
850 /* version-specific initialization */
851 switch (state->opmode) {
852 case OPMODE_MANUAL:
853 thread_func = msp3400c_thread;
854 break;
855 case OPMODE_AUTODETECT:
856 thread_func = msp3410d_thread;
857 break;
858 case OPMODE_AUTOSELECT:
859 thread_func = msp34xxg_thread;
860 break;
861 }
862
863 /* startup control thread if needed */
864 if (thread_func) {
865 state->kthread = kthread_run(thread_func, client, "msp34xx");
866
867 if (IS_ERR(state->kthread))
868 dev_warn(&client->dev, "kernel_thread() failed\n");
869 msp_wake_thread(client);
870 }
871 return 0;
872 }
873
874 static int msp_remove(struct i2c_client *client)
875 {
876 struct msp_state *state = to_state(i2c_get_clientdata(client));
877
878 v4l2_device_unregister_subdev(&state->sd);
879 /* shutdown control thread */
880 if (state->kthread) {
881 state->restart = 1;
882 kthread_stop(state->kthread);
883 }
884 msp_reset(client);
885
886 v4l2_ctrl_handler_free(&state->hdl);
887 return 0;
888 }
889
890 /* ----------------------------------------------------------------------- */
891
892 static const struct dev_pm_ops msp3400_pm_ops = {
893 SET_SYSTEM_SLEEP_PM_OPS(msp_suspend, msp_resume)
894 };
895
896 static const struct i2c_device_id msp_id[] = {
897 { "msp3400", 0 },
898 { }
899 };
900 MODULE_DEVICE_TABLE(i2c, msp_id);
901
902 static struct i2c_driver msp_driver = {
903 .driver = {
904 .name = "msp3400",
905 .pm = &msp3400_pm_ops,
906 },
907 .probe = msp_probe,
908 .remove = msp_remove,
909 .id_table = msp_id,
910 };
911
912 module_i2c_driver(msp_driver);
Linux with added FPC-III support