1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Programming the mspx4xx sound processor family
4 *
5 * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
6 *
7 * what works and what doesn't:
8 *
9 * AM-Mono
10 * Support for Hauppauge cards added (decoding handled by tuner) added by
11 * Frederic Crozat <fcrozat@mail.dotcom.fr>
12 *
13 * FM-Mono
14 * should work. The stereo modes are backward compatible to FM-mono,
15 * therefore FM-Mono should be always available.
16 *
17 * FM-Stereo (B/G, used in germany)
18 * should work, with autodetect
19 *
20 * FM-Stereo (satellite)
21 * should work, no autodetect (i.e. default is mono, but you can
22 * switch to stereo -- untested)
23 *
24 * NICAM (B/G, L , used in UK, Scandinavia, Spain and France)
25 * should work, with autodetect. Support for NICAM was added by
26 * Pekka Pietikainen <pp@netppl.fi>
27 *
28 * TODO:
29 * - better SAT support
30 *
31 * 980623 Thomas Sailer (sailer@ife.ee.ethz.ch)
32 * using soundcore instead of OSS
33 */
34
35
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/slab.h>
39 #include <linux/i2c.h>
40 #include <linux/kthread.h>
41 #include <linux/freezer.h>
42 #include <linux/videodev2.h>
43 #include <media/v4l2-device.h>
44 #include <media/v4l2-ioctl.h>
45 #include <media/drv-intf/msp3400.h>
46 #include <media/i2c/tvaudio.h>
47 #include "msp3400-driver.h"
48
49 /* ---------------------------------------------------------------------- */
50
51 MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
52 MODULE_AUTHOR("Gerd Knorr");
53 MODULE_LICENSE("GPL");
54
55 /* module parameters */
56 static int opmode = OPMODE_AUTO;
57 int msp_debug; /* msp_debug output */
58 bool msp_once; /* no continuous stereo monitoring */
59 bool msp_amsound; /* hard-wire AM sound at 6.5 Hz (france),
60 the autoscan seems work well only with FM... */
61 int msp_standard = 1; /* Override auto detect of audio msp_standard,
62 if needed. */
63 bool msp_dolby;
64
65 int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
66 (msp34xxg only) 0x00a0-0x03c0 */
67
68 /* read-only */
69 module_param(opmode, int, 0444);
70
71 /* read-write */
72 module_param_named(once, msp_once, bool, 0644);
73 module_param_named(debug, msp_debug, int, 0644);
74 module_param_named(stereo_threshold, msp_stereo_thresh, int, 0644);
75 module_param_named(standard, msp_standard, int, 0644);
76 module_param_named(amsound, msp_amsound, bool, 0644);
77 module_param_named(dolby, msp_dolby, bool, 0644);
78
79 MODULE_PARM_DESC(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
80 MODULE_PARM_DESC(once, "No continuous stereo monitoring");
81 MODULE_PARM_DESC(debug, "Enable debug messages [0-3]");
82 MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
83 MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
84 MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
85 MODULE_PARM_DESC(dolby, "Activates Dolby processing");
86
87 /* ---------------------------------------------------------------------- */
88
89 /* control subaddress */
90 #define I2C_MSP_CONTROL 0x00
91 /* demodulator unit subaddress */
92 #define I2C_MSP_DEM 0x10
93 /* DSP unit subaddress */
94 #define I2C_MSP_DSP 0x12
95
96
97 /* ----------------------------------------------------------------------- */
98 /* functions for talking to the MSP3400C Sound processor */
99
msp_reset(struct i2c_client * client)100 int msp_reset(struct i2c_client *client)
101 {
102 /* reset and read revision code */
103 static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
104 static u8 reset_on[3] = { I2C_MSP_CONTROL, 0x00, 0x00 };
105 static u8 write[3] = { I2C_MSP_DSP + 1, 0x00, 0x1e };
106 u8 read[2];
107 struct i2c_msg reset[2] = {
108 {
109 .addr = client->addr,
110 .flags = I2C_M_IGNORE_NAK,
111 .len = 3,
112 .buf = reset_off
113 },
114 {
115 .addr = client->addr,
116 .flags = I2C_M_IGNORE_NAK,
117 .len = 3,
118 .buf = reset_on
119 },
120 };
121 struct i2c_msg test[2] = {
122 {
123 .addr = client->addr,
124 .len = 3,
125 .buf = write
126 },
127 {
128 .addr = client->addr,
129 .flags = I2C_M_RD,
130 .len = 2,
131 .buf = read
132 },
133 };
134
135 dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_reset\n");
136 if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
137 i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
138 i2c_transfer(client->adapter, test, 2) != 2) {
139 dev_err(&client->dev, "chip reset failed\n");
140 return -1;
141 }
142 return 0;
143 }
144
msp_read(struct i2c_client * client,int dev,int addr)145 static int msp_read(struct i2c_client *client, int dev, int addr)
146 {
147 int err, retval;
148 u8 write[3];
149 u8 read[2];
150 struct i2c_msg msgs[2] = {
151 {
152 .addr = client->addr,
153 .len = 3,
154 .buf = write
155 },
156 {
157 .addr = client->addr,
158 .flags = I2C_M_RD,
159 .len = 2,
160 .buf = read
161 }
162 };
163
164 write[0] = dev + 1;
165 write[1] = addr >> 8;
166 write[2] = addr & 0xff;
167
168 for (err = 0; err < 3; err++) {
169 if (i2c_transfer(client->adapter, msgs, 2) == 2)
170 break;
171 dev_warn(&client->dev, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
172 dev, addr);
173 schedule_timeout_interruptible(msecs_to_jiffies(10));
174 }
175 if (err == 3) {
176 dev_warn(&client->dev, "resetting chip, sound will go off.\n");
177 msp_reset(client);
178 return -1;
179 }
180 retval = read[0] << 8 | read[1];
181 dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_read(0x%x, 0x%x): 0x%x\n",
182 dev, addr, retval);
183 return retval;
184 }
185
msp_read_dem(struct i2c_client * client,int addr)186 int msp_read_dem(struct i2c_client *client, int addr)
187 {
188 return msp_read(client, I2C_MSP_DEM, addr);
189 }
190
msp_read_dsp(struct i2c_client * client,int addr)191 int msp_read_dsp(struct i2c_client *client, int addr)
192 {
193 return msp_read(client, I2C_MSP_DSP, addr);
194 }
195
msp_write(struct i2c_client * client,int dev,int addr,int val)196 static int msp_write(struct i2c_client *client, int dev, int addr, int val)
197 {
198 int err;
199 u8 buffer[5];
200
201 buffer[0] = dev;
202 buffer[1] = addr >> 8;
203 buffer[2] = addr & 0xff;
204 buffer[3] = val >> 8;
205 buffer[4] = val & 0xff;
206
207 dev_dbg_lvl(&client->dev, 3, msp_debug, "msp_write(0x%x, 0x%x, 0x%x)\n",
208 dev, addr, val);
209 for (err = 0; err < 3; err++) {
210 if (i2c_master_send(client, buffer, 5) == 5)
211 break;
212 dev_warn(&client->dev, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
213 dev, addr);
214 schedule_timeout_interruptible(msecs_to_jiffies(10));
215 }
216 if (err == 3) {
217 dev_warn(&client->dev, "resetting chip, sound will go off.\n");
218 msp_reset(client);
219 return -1;
220 }
221 return 0;
222 }
223
msp_write_dem(struct i2c_client * client,int addr,int val)224 int msp_write_dem(struct i2c_client *client, int addr, int val)
225 {
226 return msp_write(client, I2C_MSP_DEM, addr, val);
227 }
228
msp_write_dsp(struct i2c_client * client,int addr,int val)229 int msp_write_dsp(struct i2c_client *client, int addr, int val)
230 {
231 return msp_write(client, I2C_MSP_DSP, addr, val);
232 }
233
234 /* ----------------------------------------------------------------------- *
235 * bits 9 8 5 - SCART DSP input Select:
236 * 0 0 0 - SCART 1 to DSP input (reset position)
237 * 0 1 0 - MONO to DSP input
238 * 1 0 0 - SCART 2 to DSP input
239 * 1 1 1 - Mute DSP input
240 *
241 * bits 11 10 6 - SCART 1 Output Select:
242 * 0 0 0 - undefined (reset position)
243 * 0 1 0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
244 * 1 0 0 - MONO input to SCART 1 Output
245 * 1 1 0 - SCART 1 DA to SCART 1 Output
246 * 0 0 1 - SCART 2 DA to SCART 1 Output
247 * 0 1 1 - SCART 1 Input to SCART 1 Output
248 * 1 1 1 - Mute SCART 1 Output
249 *
250 * bits 13 12 7 - SCART 2 Output Select (for devices with 2 Output SCART):
251 * 0 0 0 - SCART 1 DA to SCART 2 Output (reset position)
252 * 0 1 0 - SCART 1 Input to SCART 2 Output
253 * 1 0 0 - MONO input to SCART 2 Output
254 * 0 0 1 - SCART 2 DA to SCART 2 Output
255 * 0 1 1 - SCART 2 Input to SCART 2 Output
256 * 1 1 0 - Mute SCART 2 Output
257 *
258 * Bits 4 to 0 should be zero.
259 * ----------------------------------------------------------------------- */
260
261 static int scarts[3][9] = {
262 /* MASK IN1 IN2 IN3 IN4 IN1_DA IN2_DA MONO MUTE */
263 /* SCART DSP Input select */
264 { 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1, -1, 0x0100, 0x0320 },
265 /* SCART1 Output select */
266 { 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
267 /* SCART2 Output select */
268 { 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
269 };
270
271 static char *scart_names[] = {
272 "in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
273 };
274
msp_set_scart(struct i2c_client * client,int in,int out)275 void msp_set_scart(struct i2c_client *client, int in, int out)
276 {
277 struct msp_state *state = to_state(i2c_get_clientdata(client));
278
279 state->in_scart = in;
280
281 if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
282 if (-1 == scarts[out][in + 1])
283 return;
284
285 state->acb &= ~scarts[out][0];
286 state->acb |= scarts[out][in + 1];
287 } else
288 state->acb = 0xf60; /* Mute Input and SCART 1 Output */
289
290 dev_dbg_lvl(&client->dev, 1, msp_debug, "scart switch: %s => %d (ACB=0x%04x)\n",
291 scart_names[in], out, state->acb);
292 msp_write_dsp(client, 0x13, state->acb);
293
294 /* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
295 if (state->has_i2s_conf)
296 msp_write_dem(client, 0x40, state->i2s_mode);
297 }
298
299 /* ------------------------------------------------------------------------ */
300
msp_wake_thread(struct i2c_client * client)301 static void msp_wake_thread(struct i2c_client *client)
302 {
303 struct msp_state *state = to_state(i2c_get_clientdata(client));
304
305 if (NULL == state->kthread)
306 return;
307 state->watch_stereo = 0;
308 state->restart = 1;
309 wake_up_interruptible(&state->wq);
310 }
311
msp_sleep(struct msp_state * state,int msec)312 int msp_sleep(struct msp_state *state, int msec)
313 {
314 long timeout;
315
316 timeout = msec < 0 ? MAX_SCHEDULE_TIMEOUT : msecs_to_jiffies(msec);
317
318 wait_event_freezable_timeout(state->wq, kthread_should_stop() ||
319 state->restart, timeout);
320
321 return state->restart;
322 }
323
324 /* ------------------------------------------------------------------------ */
325
msp_s_ctrl(struct v4l2_ctrl * ctrl)326 static int msp_s_ctrl(struct v4l2_ctrl *ctrl)
327 {
328 struct msp_state *state = ctrl_to_state(ctrl);
329 struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
330 int val = ctrl->val;
331
332 switch (ctrl->id) {
333 case V4L2_CID_AUDIO_VOLUME: {
334 /* audio volume cluster */
335 int reallymuted = state->muted->val | state->scan_in_progress;
336
337 if (!reallymuted)
338 val = (val * 0x7f / 65535) << 8;
339
340 dev_dbg_lvl(&client->dev, 1, msp_debug, "mute=%s scanning=%s volume=%d\n",
341 state->muted->val ? "on" : "off",
342 state->scan_in_progress ? "yes" : "no",
343 state->volume->val);
344
345 msp_write_dsp(client, 0x0000, val);
346 msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
347 if (state->has_scart2_out_volume)
348 msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
349 if (state->has_headphones)
350 msp_write_dsp(client, 0x0006, val);
351 break;
352 }
353
354 case V4L2_CID_AUDIO_BASS:
355 val = ((val - 32768) * 0x60 / 65535) << 8;
356 msp_write_dsp(client, 0x0002, val);
357 if (state->has_headphones)
358 msp_write_dsp(client, 0x0031, val);
359 break;
360
361 case V4L2_CID_AUDIO_TREBLE:
362 val = ((val - 32768) * 0x60 / 65535) << 8;
363 msp_write_dsp(client, 0x0003, val);
364 if (state->has_headphones)
365 msp_write_dsp(client, 0x0032, val);
366 break;
367
368 case V4L2_CID_AUDIO_LOUDNESS:
369 val = val ? ((5 * 4) << 8) : 0;
370 msp_write_dsp(client, 0x0004, val);
371 if (state->has_headphones)
372 msp_write_dsp(client, 0x0033, val);
373 break;
374
375 case V4L2_CID_AUDIO_BALANCE:
376 val = (u8)((val / 256) - 128);
377 msp_write_dsp(client, 0x0001, val << 8);
378 if (state->has_headphones)
379 msp_write_dsp(client, 0x0030, val << 8);
380 break;
381
382 default:
383 return -EINVAL;
384 }
385 return 0;
386 }
387
msp_update_volume(struct msp_state * state)388 void msp_update_volume(struct msp_state *state)
389 {
390 /* Force an update of the volume/mute cluster */
391 v4l2_ctrl_lock(state->volume);
392 state->volume->val = state->volume->cur.val;
393 state->muted->val = state->muted->cur.val;
394 msp_s_ctrl(state->volume);
395 v4l2_ctrl_unlock(state->volume);
396 }
397
398 /* --- v4l2 ioctls --- */
msp_s_radio(struct v4l2_subdev * sd)399 static int msp_s_radio(struct v4l2_subdev *sd)
400 {
401 struct msp_state *state = to_state(sd);
402 struct i2c_client *client = v4l2_get_subdevdata(sd);
403
404 if (state->radio)
405 return 0;
406 state->radio = 1;
407 dev_dbg_lvl(&client->dev, 1, msp_debug, "switching to radio mode\n");
408 state->watch_stereo = 0;
409 switch (state->opmode) {
410 case OPMODE_MANUAL:
411 /* set msp3400 to FM radio mode */
412 msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
413 msp3400c_set_carrier(client, MSP_CARRIER(10.7),
414 MSP_CARRIER(10.7));
415 msp_update_volume(state);
416 break;
417 case OPMODE_AUTODETECT:
418 case OPMODE_AUTOSELECT:
419 /* the thread will do for us */
420 msp_wake_thread(client);
421 break;
422 }
423 return 0;
424 }
425
msp_s_frequency(struct v4l2_subdev * sd,const struct v4l2_frequency * freq)426 static int msp_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
427 {
428 struct i2c_client *client = v4l2_get_subdevdata(sd);
429
430 /* new channel -- kick audio carrier scan */
431 msp_wake_thread(client);
432 return 0;
433 }
434
msp_querystd(struct v4l2_subdev * sd,v4l2_std_id * id)435 static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id)
436 {
437 struct msp_state *state = to_state(sd);
438 struct i2c_client *client = v4l2_get_subdevdata(sd);
439
440 *id &= state->detected_std;
441
442 dev_dbg_lvl(&client->dev, 2, msp_debug,
443 "detected standard: %s(0x%08Lx)\n",
444 msp_standard_std_name(state->std), state->detected_std);
445
446 return 0;
447 }
448
msp_s_std(struct v4l2_subdev * sd,v4l2_std_id id)449 static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
450 {
451 struct msp_state *state = to_state(sd);
452 struct i2c_client *client = v4l2_get_subdevdata(sd);
453 int update = state->radio || state->v4l2_std != id;
454
455 state->v4l2_std = id;
456 state->radio = 0;
457 if (update)
458 msp_wake_thread(client);
459 return 0;
460 }
461
msp_s_routing(struct v4l2_subdev * sd,u32 input,u32 output,u32 config)462 static int msp_s_routing(struct v4l2_subdev *sd,
463 u32 input, u32 output, u32 config)
464 {
465 struct msp_state *state = to_state(sd);
466 struct i2c_client *client = v4l2_get_subdevdata(sd);
467 int tuner = (input >> 3) & 1;
468 int sc_in = input & 0x7;
469 int sc1_out = output & 0xf;
470 int sc2_out = (output >> 4) & 0xf;
471 u16 val, reg;
472 int i;
473 int extern_input = 1;
474
475 if (state->route_in == input && state->route_out == output)
476 return 0;
477 state->route_in = input;
478 state->route_out = output;
479 /* check if the tuner input is used */
480 for (i = 0; i < 5; i++) {
481 if (((input >> (4 + i * 4)) & 0xf) == 0)
482 extern_input = 0;
483 }
484 state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
485 state->rxsubchans = V4L2_TUNER_SUB_STEREO;
486 msp_set_scart(client, sc_in, 0);
487 msp_set_scart(client, sc1_out, 1);
488 msp_set_scart(client, sc2_out, 2);
489 msp_set_audmode(client);
490 reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
491 val = msp_read_dem(client, reg);
492 msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
493 /* wake thread when a new input is chosen */
494 msp_wake_thread(client);
495 return 0;
496 }
497
msp_g_tuner(struct v4l2_subdev * sd,struct v4l2_tuner * vt)498 static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
499 {
500 struct msp_state *state = to_state(sd);
501 struct i2c_client *client = v4l2_get_subdevdata(sd);
502
503 if (vt->type != V4L2_TUNER_ANALOG_TV)
504 return 0;
505 if (!state->radio) {
506 if (state->opmode == OPMODE_AUTOSELECT)
507 msp_detect_stereo(client);
508 vt->rxsubchans = state->rxsubchans;
509 }
510 vt->audmode = state->audmode;
511 vt->capability |= V4L2_TUNER_CAP_STEREO |
512 V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
513 return 0;
514 }
515
msp_s_tuner(struct v4l2_subdev * sd,const struct v4l2_tuner * vt)516 static int msp_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
517 {
518 struct msp_state *state = to_state(sd);
519 struct i2c_client *client = v4l2_get_subdevdata(sd);
520
521 if (state->radio) /* TODO: add mono/stereo support for radio */
522 return 0;
523 if (state->audmode == vt->audmode)
524 return 0;
525 state->audmode = vt->audmode;
526 /* only set audmode */
527 msp_set_audmode(client);
528 return 0;
529 }
530
msp_s_i2s_clock_freq(struct v4l2_subdev * sd,u32 freq)531 static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
532 {
533 struct msp_state *state = to_state(sd);
534 struct i2c_client *client = v4l2_get_subdevdata(sd);
535
536 dev_dbg_lvl(&client->dev, 1, msp_debug, "Setting I2S speed to %d\n", freq);
537
538 switch (freq) {
539 case 1024000:
540 state->i2s_mode = 0;
541 break;
542 case 2048000:
543 state->i2s_mode = 1;
544 break;
545 default:
546 return -EINVAL;
547 }
548 return 0;
549 }
550
msp_log_status(struct v4l2_subdev * sd)551 static int msp_log_status(struct v4l2_subdev *sd)
552 {
553 struct msp_state *state = to_state(sd);
554 struct i2c_client *client = v4l2_get_subdevdata(sd);
555 const char *p;
556 char prefix[sizeof(sd->name) + 20];
557
558 if (state->opmode == OPMODE_AUTOSELECT)
559 msp_detect_stereo(client);
560 dev_info(&client->dev, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
561 client->name, state->rev1, state->rev2);
562 snprintf(prefix, sizeof(prefix), "%s: Audio: ", sd->name);
563 v4l2_ctrl_handler_log_status(&state->hdl, prefix);
564 switch (state->mode) {
565 case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
566 case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
567 case MSP_MODE_FM_TERRA: p = "Terrestrial FM-mono/stereo"; break;
568 case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
569 case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
570 case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
571 case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
572 case MSP_MODE_BTSC: p = "BTSC"; break;
573 case MSP_MODE_EXTERN: p = "External input"; break;
574 default: p = "unknown"; break;
575 }
576 if (state->mode == MSP_MODE_EXTERN) {
577 dev_info(&client->dev, "Mode: %s\n", p);
578 } else if (state->opmode == OPMODE_MANUAL) {
579 dev_info(&client->dev, "Mode: %s (%s%s)\n", p,
580 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
581 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
582 } else {
583 if (state->opmode == OPMODE_AUTODETECT)
584 dev_info(&client->dev, "Mode: %s\n", p);
585 dev_info(&client->dev, "Standard: %s (%s%s)\n",
586 msp_standard_std_name(state->std),
587 (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
588 (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
589 }
590 dev_info(&client->dev, "Audmode: 0x%04x\n", state->audmode);
591 dev_info(&client->dev, "Routing: 0x%08x (input) 0x%08x (output)\n",
592 state->route_in, state->route_out);
593 dev_info(&client->dev, "ACB: 0x%04x\n", state->acb);
594 return 0;
595 }
596
597 #ifdef CONFIG_PM_SLEEP
msp_suspend(struct device * dev)598 static int msp_suspend(struct device *dev)
599 {
600 struct i2c_client *client = to_i2c_client(dev);
601 dev_dbg_lvl(&client->dev, 1, msp_debug, "suspend\n");
602 msp_reset(client);
603 return 0;
604 }
605
msp_resume(struct device * dev)606 static int msp_resume(struct device *dev)
607 {
608 struct i2c_client *client = to_i2c_client(dev);
609 dev_dbg_lvl(&client->dev, 1, msp_debug, "resume\n");
610 msp_wake_thread(client);
611 return 0;
612 }
613 #endif
614
615 /* ----------------------------------------------------------------------- */
616
617 static const struct v4l2_ctrl_ops msp_ctrl_ops = {
618 .s_ctrl = msp_s_ctrl,
619 };
620
621 static const struct v4l2_subdev_core_ops msp_core_ops = {
622 .log_status = msp_log_status,
623 };
624
625 static const struct v4l2_subdev_video_ops msp_video_ops = {
626 .s_std = msp_s_std,
627 .querystd = msp_querystd,
628 };
629
630 static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
631 .s_frequency = msp_s_frequency,
632 .g_tuner = msp_g_tuner,
633 .s_tuner = msp_s_tuner,
634 .s_radio = msp_s_radio,
635 };
636
637 static const struct v4l2_subdev_audio_ops msp_audio_ops = {
638 .s_routing = msp_s_routing,
639 .s_i2s_clock_freq = msp_s_i2s_clock_freq,
640 };
641
642 static const struct v4l2_subdev_ops msp_ops = {
643 .core = &msp_core_ops,
644 .video = &msp_video_ops,
645 .tuner = &msp_tuner_ops,
646 .audio = &msp_audio_ops,
647 };
648
649 /* ----------------------------------------------------------------------- */
650
651
652 static const char * const opmode_str[] = {
653 [OPMODE_MANUAL] = "manual",
654 [OPMODE_AUTODETECT] = "autodetect",
655 [OPMODE_AUTOSELECT] = "autodetect and autoselect",
656 };
657
msp_probe(struct i2c_client * client)658 static int msp_probe(struct i2c_client *client)
659 {
660 const struct i2c_device_id *id = i2c_client_get_device_id(client);
661 struct msp_state *state;
662 struct v4l2_subdev *sd;
663 struct v4l2_ctrl_handler *hdl;
664 int (*thread_func)(void *data) = NULL;
665 int msp_hard;
666 int msp_family;
667 int msp_revision;
668 int msp_product, msp_prod_hi, msp_prod_lo;
669 int msp_rom;
670 #if defined(CONFIG_MEDIA_CONTROLLER)
671 int ret;
672 #endif
673
674 if (!id)
675 strscpy(client->name, "msp3400", sizeof(client->name));
676
677 if (msp_reset(client) == -1) {
678 dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 not found\n");
679 return -ENODEV;
680 }
681
682 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
683 if (!state)
684 return -ENOMEM;
685
686 sd = &state->sd;
687 v4l2_i2c_subdev_init(sd, client, &msp_ops);
688
689 #if defined(CONFIG_MEDIA_CONTROLLER)
690 state->pads[MSP3400_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
691 state->pads[MSP3400_PAD_IF_INPUT].sig_type = PAD_SIGNAL_AUDIO;
692 state->pads[MSP3400_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
693 state->pads[MSP3400_PAD_OUT].sig_type = PAD_SIGNAL_AUDIO;
694
695 sd->entity.function = MEDIA_ENT_F_IF_AUD_DECODER;
696
697 ret = media_entity_pads_init(&sd->entity, 2, state->pads);
698 if (ret < 0)
699 return ret;
700 #endif
701
702 state->v4l2_std = V4L2_STD_NTSC;
703 state->detected_std = V4L2_STD_ALL;
704 state->audmode = V4L2_TUNER_MODE_STEREO;
705 state->input = -1;
706 state->i2s_mode = 0;
707 init_waitqueue_head(&state->wq);
708 /* These are the reset input/output positions */
709 state->route_in = MSP_INPUT_DEFAULT;
710 state->route_out = MSP_OUTPUT_DEFAULT;
711
712 state->rev1 = msp_read_dsp(client, 0x1e);
713 if (state->rev1 != -1)
714 state->rev2 = msp_read_dsp(client, 0x1f);
715 dev_dbg_lvl(&client->dev, 1, msp_debug, "rev1=0x%04x, rev2=0x%04x\n",
716 state->rev1, state->rev2);
717 if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
718 dev_dbg_lvl(&client->dev, 1, msp_debug,
719 "not an msp3400 (cannot read chip version)\n");
720 return -ENODEV;
721 }
722
723 msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
724 msp_product = (state->rev2 >> 8) & 0xff;
725 msp_prod_hi = msp_product / 10;
726 msp_prod_lo = msp_product % 10;
727 msp_revision = (state->rev1 & 0x0f) + '@';
728 msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
729 msp_rom = state->rev2 & 0x1f;
730 /* Rev B=2, C=3, D=4, G=7 */
731 state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
732 msp_revision - '@';
733
734 /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
735 state->has_nicam =
736 msp_prod_hi == 1 || msp_prod_hi == 5;
737 /* Has radio support: was added with revision G */
738 state->has_radio =
739 msp_revision >= 'G';
740 /* Has headphones output: not for stripped down products */
741 state->has_headphones =
742 msp_prod_lo < 5;
743 /* Has scart2 input: not in stripped down products of the '3' family */
744 state->has_scart2 =
745 msp_family >= 4 || msp_prod_lo < 7;
746 /* Has scart3 input: not in stripped down products of the '3' family */
747 state->has_scart3 =
748 msp_family >= 4 || msp_prod_lo < 5;
749 /* Has scart4 input: not in pre D revisions, not in stripped D revs */
750 state->has_scart4 =
751 msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
752 /* Has scart2 output: not in stripped down products of
753 * the '3' family */
754 state->has_scart2_out =
755 msp_family >= 4 || msp_prod_lo < 5;
756 /* Has scart2 a volume control? Not in pre-D revisions. */
757 state->has_scart2_out_volume =
758 msp_revision > 'C' && state->has_scart2_out;
759 /* Has a configurable i2s out? */
760 state->has_i2s_conf =
761 msp_revision >= 'G' && msp_prod_lo < 7;
762 /* Has subwoofer output: not in pre-D revs and not in stripped down
763 * products */
764 state->has_subwoofer =
765 msp_revision >= 'D' && msp_prod_lo < 5;
766 /* Has soundprocessing (bass/treble/balance/loudness/equalizer):
767 * not in stripped down products */
768 state->has_sound_processing =
769 msp_prod_lo < 7;
770 /* Has Virtual Dolby Surround: only in msp34x1 */
771 state->has_virtual_dolby_surround =
772 msp_revision == 'G' && msp_prod_lo == 1;
773 /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
774 state->has_dolby_pro_logic =
775 msp_revision == 'G' && msp_prod_lo == 2;
776 /* The msp343xG supports BTSC only and cannot do Automatic Standard
777 * Detection. */
778 state->force_btsc =
779 msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
780
781 state->opmode = opmode;
782 if (state->opmode < OPMODE_MANUAL
783 || state->opmode > OPMODE_AUTOSELECT) {
784 /* MSP revision G and up have both autodetect and autoselect */
785 if (msp_revision >= 'G')
786 state->opmode = OPMODE_AUTOSELECT;
787 /* MSP revision D and up have autodetect */
788 else if (msp_revision >= 'D')
789 state->opmode = OPMODE_AUTODETECT;
790 else
791 state->opmode = OPMODE_MANUAL;
792 }
793
794 hdl = &state->hdl;
795 v4l2_ctrl_handler_init(hdl, 6);
796 if (state->has_sound_processing) {
797 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
798 V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
799 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
800 V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
801 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
802 V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
803 }
804 state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
805 V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
806 v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
807 V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
808 state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
809 V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
810 sd->ctrl_handler = hdl;
811 if (hdl->error) {
812 int err = hdl->error;
813
814 v4l2_ctrl_handler_free(hdl);
815 return err;
816 }
817
818 v4l2_ctrl_cluster(2, &state->volume);
819 v4l2_ctrl_handler_setup(hdl);
820
821 dev_info(&client->dev,
822 "MSP%d4%02d%c-%c%d found on %s: supports %s%s%s, mode is %s\n",
823 msp_family, msp_product,
824 msp_revision, msp_hard, msp_rom,
825 client->adapter->name,
826 (state->has_nicam) ? "nicam" : "",
827 (state->has_nicam && state->has_radio) ? " and " : "",
828 (state->has_radio) ? "radio" : "",
829 opmode_str[state->opmode]);
830
831 /* version-specific initialization */
832 switch (state->opmode) {
833 case OPMODE_MANUAL:
834 thread_func = msp3400c_thread;
835 break;
836 case OPMODE_AUTODETECT:
837 thread_func = msp3410d_thread;
838 break;
839 case OPMODE_AUTOSELECT:
840 thread_func = msp34xxg_thread;
841 break;
842 }
843
844 /* startup control thread if needed */
845 if (thread_func) {
846 state->kthread = kthread_run(thread_func, client, "msp34xx");
847
848 if (IS_ERR(state->kthread))
849 dev_warn(&client->dev, "kernel_thread() failed\n");
850 msp_wake_thread(client);
851 }
852 return 0;
853 }
854
msp_remove(struct i2c_client * client)855 static void msp_remove(struct i2c_client *client)
856 {
857 struct msp_state *state = to_state(i2c_get_clientdata(client));
858
859 v4l2_device_unregister_subdev(&state->sd);
860 /* shutdown control thread */
861 if (state->kthread) {
862 state->restart = 1;
863 kthread_stop(state->kthread);
864 }
865 msp_reset(client);
866
867 v4l2_ctrl_handler_free(&state->hdl);
868 }
869
870 /* ----------------------------------------------------------------------- */
871
872 static const struct dev_pm_ops msp3400_pm_ops = {
873 SET_SYSTEM_SLEEP_PM_OPS(msp_suspend, msp_resume)
874 };
875
876 static const struct i2c_device_id msp_id[] = {
877 { "msp3400" },
878 { }
879 };
880 MODULE_DEVICE_TABLE(i2c, msp_id);
881
882 static struct i2c_driver msp_driver = {
883 .driver = {
884 .name = "msp3400",
885 .pm = &msp3400_pm_ops,
886 },
887 .probe = msp_probe,
888 .remove = msp_remove,
889 .id_table = msp_id,
890 };
891
892 module_i2c_driver(msp_driver);
893