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3a66d387 MB |
1 | /* |
2 | * wm2000.c -- WM2000 ALSA Soc Audio driver | |
3 | * | |
4 | * Copyright 2008-2010 Wolfson Microelectronics PLC. | |
5 | * | |
6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * The download image for the WM2000 will be requested as | |
13 | * 'wm2000_anc.bin' by default (overridable via platform data) at | |
14 | * runtime and is expected to be in flat binary format. This is | |
15 | * generated by Wolfson configuration tools and includes | |
16 | * system-specific callibration information. If supplied as a | |
17 | * sequence of ASCII-encoded hexidecimal bytes this can be converted | |
18 | * into a flat binary with a command such as this on the command line: | |
19 | * | |
20 | * perl -e 'while (<>) { s/[\r\n]+// ; printf("%c", hex($_)); }' | |
21 | * < file > wm2000_anc.bin | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
3a66d387 MB |
26 | #include <linux/kernel.h> |
27 | #include <linux/init.h> | |
28 | #include <linux/firmware.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/pm.h> | |
31 | #include <linux/i2c.h> | |
8aa1fe81 | 32 | #include <linux/regmap.h> |
3a66d387 | 33 | #include <linux/debugfs.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
3a66d387 MB |
35 | #include <sound/core.h> |
36 | #include <sound/pcm.h> | |
37 | #include <sound/pcm_params.h> | |
38 | #include <sound/soc.h> | |
3a66d387 MB |
39 | #include <sound/initval.h> |
40 | #include <sound/tlv.h> | |
41 | ||
42 | #include <sound/wm2000.h> | |
43 | ||
44 | #include "wm2000.h" | |
45 | ||
46 | enum wm2000_anc_mode { | |
47 | ANC_ACTIVE = 0, | |
48 | ANC_BYPASS = 1, | |
49 | ANC_STANDBY = 2, | |
50 | ANC_OFF = 3, | |
51 | }; | |
52 | ||
53 | struct wm2000_priv { | |
54 | struct i2c_client *i2c; | |
8aa1fe81 | 55 | struct regmap *regmap; |
3a66d387 MB |
56 | |
57 | enum wm2000_anc_mode anc_mode; | |
58 | ||
59 | unsigned int anc_active:1; | |
60 | unsigned int anc_eng_ena:1; | |
61 | unsigned int spk_ena:1; | |
62 | ||
63 | unsigned int mclk_div:1; | |
64 | unsigned int speech_clarity:1; | |
65 | ||
66 | int anc_download_size; | |
67 | char *anc_download; | |
68 | }; | |
69 | ||
3a66d387 MB |
70 | static int wm2000_write(struct i2c_client *i2c, unsigned int reg, |
71 | unsigned int value) | |
72 | { | |
8aa1fe81 MB |
73 | struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c); |
74 | return regmap_write(wm2000->regmap, reg, value); | |
3a66d387 MB |
75 | } |
76 | ||
77 | static unsigned int wm2000_read(struct i2c_client *i2c, unsigned int r) | |
78 | { | |
8aa1fe81 MB |
79 | struct wm2000_priv *wm2000 = i2c_get_clientdata(i2c); |
80 | unsigned int val; | |
3a66d387 MB |
81 | int ret; |
82 | ||
8aa1fe81 MB |
83 | ret = regmap_read(wm2000->regmap, r, &val); |
84 | if (ret < 0) | |
85 | return -1; | |
3a66d387 | 86 | |
8aa1fe81 | 87 | return val; |
3a66d387 MB |
88 | } |
89 | ||
90 | static void wm2000_reset(struct wm2000_priv *wm2000) | |
91 | { | |
92 | struct i2c_client *i2c = wm2000->i2c; | |
93 | ||
94 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR); | |
95 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); | |
96 | wm2000_write(i2c, WM2000_REG_ID1, 0); | |
97 | ||
98 | wm2000->anc_mode = ANC_OFF; | |
99 | } | |
100 | ||
101 | static int wm2000_poll_bit(struct i2c_client *i2c, | |
102 | unsigned int reg, u8 mask, int timeout) | |
103 | { | |
104 | int val; | |
105 | ||
106 | val = wm2000_read(i2c, reg); | |
107 | ||
108 | while (!(val & mask) && --timeout) { | |
109 | msleep(1); | |
110 | val = wm2000_read(i2c, reg); | |
111 | } | |
112 | ||
113 | if (timeout == 0) | |
114 | return 0; | |
115 | else | |
116 | return 1; | |
117 | } | |
118 | ||
119 | static int wm2000_power_up(struct i2c_client *i2c, int analogue) | |
120 | { | |
121 | struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); | |
122 | int ret, timeout; | |
123 | ||
124 | BUG_ON(wm2000->anc_mode != ANC_OFF); | |
125 | ||
126 | dev_dbg(&i2c->dev, "Beginning power up\n"); | |
127 | ||
128 | if (!wm2000->mclk_div) { | |
129 | dev_dbg(&i2c->dev, "Disabling MCLK divider\n"); | |
130 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, | |
131 | WM2000_MCLK_DIV2_ENA_CLR); | |
132 | } else { | |
133 | dev_dbg(&i2c->dev, "Enabling MCLK divider\n"); | |
134 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, | |
135 | WM2000_MCLK_DIV2_ENA_SET); | |
136 | } | |
137 | ||
138 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_CLR); | |
139 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_ENG_SET); | |
140 | ||
141 | /* Wait for ANC engine to become ready */ | |
142 | if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, | |
143 | WM2000_ANC_ENG_IDLE, 1)) { | |
144 | dev_err(&i2c->dev, "ANC engine failed to reset\n"); | |
145 | return -ETIMEDOUT; | |
146 | } | |
147 | ||
148 | if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, | |
149 | WM2000_STATUS_BOOT_COMPLETE, 1)) { | |
150 | dev_err(&i2c->dev, "ANC engine failed to initialise\n"); | |
151 | return -ETIMEDOUT; | |
152 | } | |
153 | ||
154 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); | |
155 | ||
156 | /* Open code download of the data since it is the only bulk | |
157 | * write we do. */ | |
158 | dev_dbg(&i2c->dev, "Downloading %d bytes\n", | |
159 | wm2000->anc_download_size - 2); | |
160 | ||
161 | ret = i2c_master_send(i2c, wm2000->anc_download, | |
162 | wm2000->anc_download_size); | |
163 | if (ret < 0) { | |
164 | dev_err(&i2c->dev, "i2c_transfer() failed: %d\n", ret); | |
165 | return ret; | |
166 | } | |
167 | if (ret != wm2000->anc_download_size) { | |
168 | dev_err(&i2c->dev, "i2c_transfer() failed, %d != %d\n", | |
169 | ret, wm2000->anc_download_size); | |
170 | return -EIO; | |
171 | } | |
172 | ||
173 | dev_dbg(&i2c->dev, "Download complete\n"); | |
174 | ||
175 | if (analogue) { | |
176 | timeout = 248; | |
177 | wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4); | |
178 | ||
179 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
180 | WM2000_MODE_ANA_SEQ_INCLUDE | | |
181 | WM2000_MODE_MOUSE_ENABLE | | |
182 | WM2000_MODE_THERMAL_ENABLE); | |
183 | } else { | |
184 | timeout = 10; | |
185 | ||
186 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
187 | WM2000_MODE_MOUSE_ENABLE | | |
188 | WM2000_MODE_THERMAL_ENABLE); | |
189 | } | |
190 | ||
191 | ret = wm2000_read(i2c, WM2000_REG_SPEECH_CLARITY); | |
192 | if (wm2000->speech_clarity) | |
193 | ret &= ~WM2000_SPEECH_CLARITY; | |
194 | else | |
195 | ret |= WM2000_SPEECH_CLARITY; | |
196 | wm2000_write(i2c, WM2000_REG_SPEECH_CLARITY, ret); | |
197 | ||
198 | wm2000_write(i2c, WM2000_REG_SYS_START0, 0x33); | |
199 | wm2000_write(i2c, WM2000_REG_SYS_START1, 0x02); | |
200 | ||
201 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); | |
202 | ||
203 | if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, | |
204 | WM2000_STATUS_MOUSE_ACTIVE, timeout)) { | |
205 | dev_err(&i2c->dev, "Timed out waiting for device after %dms\n", | |
206 | timeout * 10); | |
207 | return -ETIMEDOUT; | |
208 | } | |
209 | ||
210 | dev_dbg(&i2c->dev, "ANC active\n"); | |
211 | if (analogue) | |
212 | dev_dbg(&i2c->dev, "Analogue active\n"); | |
213 | wm2000->anc_mode = ANC_ACTIVE; | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | static int wm2000_power_down(struct i2c_client *i2c, int analogue) | |
219 | { | |
220 | struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); | |
221 | int timeout; | |
222 | ||
223 | if (analogue) { | |
224 | timeout = 248; | |
225 | wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4); | |
226 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
227 | WM2000_MODE_ANA_SEQ_INCLUDE | | |
228 | WM2000_MODE_POWER_DOWN); | |
229 | } else { | |
230 | timeout = 10; | |
231 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
232 | WM2000_MODE_POWER_DOWN); | |
233 | } | |
234 | ||
235 | if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, | |
236 | WM2000_STATUS_POWER_DOWN_COMPLETE, timeout)) { | |
237 | dev_err(&i2c->dev, "Timeout waiting for ANC power down\n"); | |
238 | return -ETIMEDOUT; | |
239 | } | |
240 | ||
241 | if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, | |
242 | WM2000_ANC_ENG_IDLE, 1)) { | |
243 | dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); | |
244 | return -ETIMEDOUT; | |
245 | } | |
246 | ||
247 | dev_dbg(&i2c->dev, "powered off\n"); | |
248 | wm2000->anc_mode = ANC_OFF; | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | static int wm2000_enter_bypass(struct i2c_client *i2c, int analogue) | |
254 | { | |
255 | struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); | |
256 | ||
257 | BUG_ON(wm2000->anc_mode != ANC_ACTIVE); | |
258 | ||
259 | if (analogue) { | |
260 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
261 | WM2000_MODE_ANA_SEQ_INCLUDE | | |
262 | WM2000_MODE_THERMAL_ENABLE | | |
263 | WM2000_MODE_BYPASS_ENTRY); | |
264 | } else { | |
265 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
266 | WM2000_MODE_THERMAL_ENABLE | | |
267 | WM2000_MODE_BYPASS_ENTRY); | |
268 | } | |
269 | ||
270 | if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, | |
271 | WM2000_STATUS_ANC_DISABLED, 10)) { | |
272 | dev_err(&i2c->dev, "Timeout waiting for ANC disable\n"); | |
273 | return -ETIMEDOUT; | |
274 | } | |
275 | ||
276 | if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, | |
277 | WM2000_ANC_ENG_IDLE, 1)) { | |
278 | dev_err(&i2c->dev, "Timeout waiting for ANC engine idle\n"); | |
279 | return -ETIMEDOUT; | |
280 | } | |
281 | ||
282 | wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY); | |
283 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); | |
284 | ||
285 | wm2000->anc_mode = ANC_BYPASS; | |
286 | dev_dbg(&i2c->dev, "bypass enabled\n"); | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | static int wm2000_exit_bypass(struct i2c_client *i2c, int analogue) | |
292 | { | |
293 | struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); | |
294 | ||
295 | BUG_ON(wm2000->anc_mode != ANC_BYPASS); | |
296 | ||
297 | wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0); | |
298 | ||
299 | if (analogue) { | |
300 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
301 | WM2000_MODE_ANA_SEQ_INCLUDE | | |
302 | WM2000_MODE_MOUSE_ENABLE | | |
303 | WM2000_MODE_THERMAL_ENABLE); | |
304 | } else { | |
305 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
306 | WM2000_MODE_MOUSE_ENABLE | | |
307 | WM2000_MODE_THERMAL_ENABLE); | |
308 | } | |
309 | ||
310 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); | |
311 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); | |
312 | ||
313 | if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, | |
314 | WM2000_STATUS_MOUSE_ACTIVE, 10)) { | |
315 | dev_err(&i2c->dev, "Timed out waiting for MOUSE\n"); | |
316 | return -ETIMEDOUT; | |
317 | } | |
318 | ||
319 | wm2000->anc_mode = ANC_ACTIVE; | |
320 | dev_dbg(&i2c->dev, "MOUSE active\n"); | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | static int wm2000_enter_standby(struct i2c_client *i2c, int analogue) | |
326 | { | |
327 | struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); | |
328 | int timeout; | |
329 | ||
330 | BUG_ON(wm2000->anc_mode != ANC_ACTIVE); | |
331 | ||
332 | if (analogue) { | |
333 | timeout = 248; | |
334 | wm2000_write(i2c, WM2000_REG_ANA_VMID_PD_TIME, timeout / 4); | |
335 | ||
336 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
337 | WM2000_MODE_ANA_SEQ_INCLUDE | | |
338 | WM2000_MODE_THERMAL_ENABLE | | |
339 | WM2000_MODE_STANDBY_ENTRY); | |
340 | } else { | |
341 | timeout = 10; | |
342 | ||
343 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
344 | WM2000_MODE_THERMAL_ENABLE | | |
345 | WM2000_MODE_STANDBY_ENTRY); | |
346 | } | |
347 | ||
348 | if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, | |
349 | WM2000_STATUS_ANC_DISABLED, timeout)) { | |
350 | dev_err(&i2c->dev, | |
351 | "Timed out waiting for ANC disable after 1ms\n"); | |
352 | return -ETIMEDOUT; | |
353 | } | |
354 | ||
355 | if (!wm2000_poll_bit(i2c, WM2000_REG_ANC_STAT, WM2000_ANC_ENG_IDLE, | |
356 | 1)) { | |
357 | dev_err(&i2c->dev, | |
358 | "Timed out waiting for standby after %dms\n", | |
359 | timeout * 10); | |
360 | return -ETIMEDOUT; | |
361 | } | |
362 | ||
363 | wm2000_write(i2c, WM2000_REG_SYS_CTL1, WM2000_SYS_STBY); | |
364 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_CLR); | |
365 | ||
366 | wm2000->anc_mode = ANC_STANDBY; | |
367 | dev_dbg(&i2c->dev, "standby\n"); | |
368 | if (analogue) | |
369 | dev_dbg(&i2c->dev, "Analogue disabled\n"); | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | static int wm2000_exit_standby(struct i2c_client *i2c, int analogue) | |
375 | { | |
376 | struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); | |
377 | int timeout; | |
378 | ||
379 | BUG_ON(wm2000->anc_mode != ANC_STANDBY); | |
380 | ||
381 | wm2000_write(i2c, WM2000_REG_SYS_CTL1, 0); | |
382 | ||
383 | if (analogue) { | |
384 | timeout = 248; | |
385 | wm2000_write(i2c, WM2000_REG_ANA_VMID_PU_TIME, timeout / 4); | |
386 | ||
387 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
388 | WM2000_MODE_ANA_SEQ_INCLUDE | | |
389 | WM2000_MODE_THERMAL_ENABLE | | |
390 | WM2000_MODE_MOUSE_ENABLE); | |
391 | } else { | |
392 | timeout = 10; | |
393 | ||
394 | wm2000_write(i2c, WM2000_REG_SYS_MODE_CNTRL, | |
395 | WM2000_MODE_THERMAL_ENABLE | | |
396 | WM2000_MODE_MOUSE_ENABLE); | |
397 | } | |
398 | ||
399 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_RAM_SET); | |
400 | wm2000_write(i2c, WM2000_REG_SYS_CTL2, WM2000_ANC_INT_N_CLR); | |
401 | ||
402 | if (!wm2000_poll_bit(i2c, WM2000_REG_SYS_STATUS, | |
403 | WM2000_STATUS_MOUSE_ACTIVE, timeout)) { | |
404 | dev_err(&i2c->dev, "Timed out waiting for MOUSE after %dms\n", | |
405 | timeout * 10); | |
406 | return -ETIMEDOUT; | |
407 | } | |
408 | ||
409 | wm2000->anc_mode = ANC_ACTIVE; | |
410 | dev_dbg(&i2c->dev, "MOUSE active\n"); | |
411 | if (analogue) | |
412 | dev_dbg(&i2c->dev, "Analogue enabled\n"); | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
417 | typedef int (*wm2000_mode_fn)(struct i2c_client *i2c, int analogue); | |
418 | ||
419 | static struct { | |
420 | enum wm2000_anc_mode source; | |
421 | enum wm2000_anc_mode dest; | |
422 | int analogue; | |
423 | wm2000_mode_fn step[2]; | |
424 | } anc_transitions[] = { | |
425 | { | |
426 | .source = ANC_OFF, | |
427 | .dest = ANC_ACTIVE, | |
428 | .analogue = 1, | |
429 | .step = { | |
430 | wm2000_power_up, | |
431 | }, | |
432 | }, | |
433 | { | |
434 | .source = ANC_OFF, | |
435 | .dest = ANC_STANDBY, | |
436 | .step = { | |
437 | wm2000_power_up, | |
438 | wm2000_enter_standby, | |
439 | }, | |
440 | }, | |
441 | { | |
442 | .source = ANC_OFF, | |
443 | .dest = ANC_BYPASS, | |
444 | .analogue = 1, | |
445 | .step = { | |
446 | wm2000_power_up, | |
447 | wm2000_enter_bypass, | |
448 | }, | |
449 | }, | |
450 | { | |
451 | .source = ANC_ACTIVE, | |
452 | .dest = ANC_BYPASS, | |
453 | .analogue = 1, | |
454 | .step = { | |
455 | wm2000_enter_bypass, | |
456 | }, | |
457 | }, | |
458 | { | |
459 | .source = ANC_ACTIVE, | |
460 | .dest = ANC_STANDBY, | |
461 | .analogue = 1, | |
462 | .step = { | |
463 | wm2000_enter_standby, | |
464 | }, | |
465 | }, | |
466 | { | |
467 | .source = ANC_ACTIVE, | |
468 | .dest = ANC_OFF, | |
469 | .analogue = 1, | |
470 | .step = { | |
471 | wm2000_power_down, | |
472 | }, | |
473 | }, | |
474 | { | |
475 | .source = ANC_BYPASS, | |
476 | .dest = ANC_ACTIVE, | |
477 | .analogue = 1, | |
478 | .step = { | |
479 | wm2000_exit_bypass, | |
480 | }, | |
481 | }, | |
482 | { | |
483 | .source = ANC_BYPASS, | |
484 | .dest = ANC_STANDBY, | |
485 | .analogue = 1, | |
486 | .step = { | |
487 | wm2000_exit_bypass, | |
488 | wm2000_enter_standby, | |
489 | }, | |
490 | }, | |
491 | { | |
492 | .source = ANC_BYPASS, | |
493 | .dest = ANC_OFF, | |
494 | .step = { | |
495 | wm2000_exit_bypass, | |
496 | wm2000_power_down, | |
497 | }, | |
498 | }, | |
499 | { | |
500 | .source = ANC_STANDBY, | |
501 | .dest = ANC_ACTIVE, | |
502 | .analogue = 1, | |
503 | .step = { | |
504 | wm2000_exit_standby, | |
505 | }, | |
506 | }, | |
507 | { | |
508 | .source = ANC_STANDBY, | |
509 | .dest = ANC_BYPASS, | |
510 | .analogue = 1, | |
511 | .step = { | |
512 | wm2000_exit_standby, | |
513 | wm2000_enter_bypass, | |
514 | }, | |
515 | }, | |
516 | { | |
517 | .source = ANC_STANDBY, | |
518 | .dest = ANC_OFF, | |
519 | .step = { | |
520 | wm2000_exit_standby, | |
521 | wm2000_power_down, | |
522 | }, | |
523 | }, | |
524 | }; | |
525 | ||
526 | static int wm2000_anc_transition(struct wm2000_priv *wm2000, | |
527 | enum wm2000_anc_mode mode) | |
528 | { | |
529 | struct i2c_client *i2c = wm2000->i2c; | |
530 | int i, j; | |
531 | int ret; | |
532 | ||
533 | if (wm2000->anc_mode == mode) | |
534 | return 0; | |
535 | ||
536 | for (i = 0; i < ARRAY_SIZE(anc_transitions); i++) | |
537 | if (anc_transitions[i].source == wm2000->anc_mode && | |
538 | anc_transitions[i].dest == mode) | |
539 | break; | |
540 | if (i == ARRAY_SIZE(anc_transitions)) { | |
541 | dev_err(&i2c->dev, "No transition for %d->%d\n", | |
542 | wm2000->anc_mode, mode); | |
543 | return -EINVAL; | |
544 | } | |
545 | ||
546 | for (j = 0; j < ARRAY_SIZE(anc_transitions[j].step); j++) { | |
547 | if (!anc_transitions[i].step[j]) | |
548 | break; | |
549 | ret = anc_transitions[i].step[j](i2c, | |
550 | anc_transitions[i].analogue); | |
551 | if (ret != 0) | |
552 | return ret; | |
553 | } | |
554 | ||
555 | return 0; | |
556 | } | |
557 | ||
558 | static int wm2000_anc_set_mode(struct wm2000_priv *wm2000) | |
559 | { | |
560 | struct i2c_client *i2c = wm2000->i2c; | |
561 | enum wm2000_anc_mode mode; | |
562 | ||
563 | if (wm2000->anc_eng_ena && wm2000->spk_ena) | |
564 | if (wm2000->anc_active) | |
565 | mode = ANC_ACTIVE; | |
566 | else | |
567 | mode = ANC_BYPASS; | |
568 | else | |
569 | mode = ANC_STANDBY; | |
570 | ||
571 | dev_dbg(&i2c->dev, "Set mode %d (enabled %d, mute %d, active %d)\n", | |
572 | mode, wm2000->anc_eng_ena, !wm2000->spk_ena, | |
573 | wm2000->anc_active); | |
574 | ||
575 | return wm2000_anc_transition(wm2000, mode); | |
576 | } | |
577 | ||
578 | static int wm2000_anc_mode_get(struct snd_kcontrol *kcontrol, | |
579 | struct snd_ctl_elem_value *ucontrol) | |
580 | { | |
4911ccdb MB |
581 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
582 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
3a66d387 MB |
583 | |
584 | ucontrol->value.enumerated.item[0] = wm2000->anc_active; | |
585 | ||
586 | return 0; | |
587 | } | |
588 | ||
589 | static int wm2000_anc_mode_put(struct snd_kcontrol *kcontrol, | |
590 | struct snd_ctl_elem_value *ucontrol) | |
591 | { | |
4911ccdb MB |
592 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
593 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
3a66d387 MB |
594 | int anc_active = ucontrol->value.enumerated.item[0]; |
595 | ||
596 | if (anc_active > 1) | |
597 | return -EINVAL; | |
598 | ||
599 | wm2000->anc_active = anc_active; | |
600 | ||
601 | return wm2000_anc_set_mode(wm2000); | |
602 | } | |
603 | ||
604 | static int wm2000_speaker_get(struct snd_kcontrol *kcontrol, | |
605 | struct snd_ctl_elem_value *ucontrol) | |
606 | { | |
4911ccdb MB |
607 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
608 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
3a66d387 MB |
609 | |
610 | ucontrol->value.enumerated.item[0] = wm2000->spk_ena; | |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
615 | static int wm2000_speaker_put(struct snd_kcontrol *kcontrol, | |
616 | struct snd_ctl_elem_value *ucontrol) | |
617 | { | |
4911ccdb MB |
618 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
619 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
3a66d387 MB |
620 | int val = ucontrol->value.enumerated.item[0]; |
621 | ||
622 | if (val > 1) | |
623 | return -EINVAL; | |
624 | ||
625 | wm2000->spk_ena = val; | |
626 | ||
627 | return wm2000_anc_set_mode(wm2000); | |
628 | } | |
629 | ||
630 | static const struct snd_kcontrol_new wm2000_controls[] = { | |
631 | SOC_SINGLE_BOOL_EXT("WM2000 ANC Switch", 0, | |
632 | wm2000_anc_mode_get, | |
633 | wm2000_anc_mode_put), | |
634 | SOC_SINGLE_BOOL_EXT("WM2000 Switch", 0, | |
635 | wm2000_speaker_get, | |
636 | wm2000_speaker_put), | |
637 | }; | |
638 | ||
639 | static int wm2000_anc_power_event(struct snd_soc_dapm_widget *w, | |
640 | struct snd_kcontrol *kcontrol, int event) | |
641 | { | |
4911ccdb MB |
642 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); |
643 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
3a66d387 MB |
644 | |
645 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
646 | wm2000->anc_eng_ena = 1; | |
647 | ||
648 | if (SND_SOC_DAPM_EVENT_OFF(event)) | |
649 | wm2000->anc_eng_ena = 0; | |
650 | ||
651 | return wm2000_anc_set_mode(wm2000); | |
652 | } | |
653 | ||
654 | static const struct snd_soc_dapm_widget wm2000_dapm_widgets[] = { | |
655 | /* Externally visible pins */ | |
4911ccdb MB |
656 | SND_SOC_DAPM_OUTPUT("SPKN"), |
657 | SND_SOC_DAPM_OUTPUT("SPKP"), | |
3a66d387 | 658 | |
4911ccdb MB |
659 | SND_SOC_DAPM_INPUT("LINN"), |
660 | SND_SOC_DAPM_INPUT("LINP"), | |
3a66d387 MB |
661 | |
662 | SND_SOC_DAPM_PGA_E("ANC Engine", SND_SOC_NOPM, 0, 0, NULL, 0, | |
663 | wm2000_anc_power_event, | |
664 | SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), | |
665 | }; | |
666 | ||
667 | /* Target, Path, Source */ | |
4911ccdb MB |
668 | static const struct snd_soc_dapm_route wm2000_audio_map[] = { |
669 | { "SPKN", NULL, "ANC Engine" }, | |
670 | { "SPKP", NULL, "ANC Engine" }, | |
671 | { "ANC Engine", NULL, "LINN" }, | |
672 | { "ANC Engine", NULL, "LINP" }, | |
3a66d387 MB |
673 | }; |
674 | ||
4911ccdb MB |
675 | #ifdef CONFIG_PM |
676 | static int wm2000_suspend(struct snd_soc_codec *codec) | |
3a66d387 | 677 | { |
4911ccdb | 678 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); |
3a66d387 | 679 | |
4911ccdb MB |
680 | return wm2000_anc_transition(wm2000, ANC_OFF); |
681 | } | |
3a66d387 | 682 | |
4911ccdb MB |
683 | static int wm2000_resume(struct snd_soc_codec *codec) |
684 | { | |
685 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
3a66d387 | 686 | |
4911ccdb | 687 | return wm2000_anc_set_mode(wm2000); |
3a66d387 | 688 | } |
4911ccdb MB |
689 | #else |
690 | #define wm2000_suspend NULL | |
691 | #define wm2000_resume NULL | |
692 | #endif | |
3a66d387 | 693 | |
8aa1fe81 MB |
694 | static const struct regmap_config wm2000_regmap = { |
695 | .reg_bits = 8, | |
696 | .val_bits = 8, | |
697 | }; | |
698 | ||
4911ccdb MB |
699 | static int wm2000_probe(struct snd_soc_codec *codec) |
700 | { | |
701 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
702 | ||
703 | /* This will trigger a transition to standby mode by default */ | |
704 | wm2000_anc_set_mode(wm2000); | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
709 | static int wm2000_remove(struct snd_soc_codec *codec) | |
710 | { | |
711 | struct wm2000_priv *wm2000 = dev_get_drvdata(codec->dev); | |
712 | ||
713 | return wm2000_anc_transition(wm2000, ANC_OFF); | |
714 | } | |
715 | ||
716 | static struct snd_soc_codec_driver soc_codec_dev_wm2000 = { | |
717 | .probe = wm2000_probe, | |
718 | .remove = wm2000_remove, | |
719 | .suspend = wm2000_suspend, | |
720 | .resume = wm2000_resume, | |
721 | ||
722 | .dapm_widgets = wm2000_dapm_widgets, | |
723 | .num_dapm_widgets = ARRAY_SIZE(wm2000_dapm_widgets), | |
724 | .dapm_routes = wm2000_audio_map, | |
725 | .num_dapm_routes = ARRAY_SIZE(wm2000_audio_map), | |
726 | .controls = wm2000_controls, | |
727 | .num_controls = ARRAY_SIZE(wm2000_controls), | |
728 | }; | |
729 | ||
3a66d387 MB |
730 | static int __devinit wm2000_i2c_probe(struct i2c_client *i2c, |
731 | const struct i2c_device_id *i2c_id) | |
732 | { | |
733 | struct wm2000_priv *wm2000; | |
734 | struct wm2000_platform_data *pdata; | |
735 | const char *filename; | |
736 | const struct firmware *fw; | |
737 | int reg, ret; | |
738 | u16 id; | |
739 | ||
b03e96e4 MB |
740 | wm2000 = devm_kzalloc(&i2c->dev, sizeof(struct wm2000_priv), |
741 | GFP_KERNEL); | |
3a66d387 MB |
742 | if (wm2000 == NULL) { |
743 | dev_err(&i2c->dev, "Unable to allocate private data\n"); | |
744 | return -ENOMEM; | |
745 | } | |
746 | ||
8aa1fe81 MB |
747 | dev_set_drvdata(&i2c->dev, wm2000); |
748 | ||
749 | wm2000->regmap = regmap_init_i2c(i2c, &wm2000_regmap); | |
750 | if (IS_ERR(wm2000->regmap)) { | |
751 | ret = PTR_ERR(wm2000->regmap); | |
752 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", | |
753 | ret); | |
754 | goto err; | |
755 | } | |
756 | ||
3a66d387 MB |
757 | /* Verify that this is a WM2000 */ |
758 | reg = wm2000_read(i2c, WM2000_REG_ID1); | |
759 | id = reg << 8; | |
760 | reg = wm2000_read(i2c, WM2000_REG_ID2); | |
761 | id |= reg & 0xff; | |
762 | ||
763 | if (id != 0x2000) { | |
764 | dev_err(&i2c->dev, "Device is not a WM2000 - ID %x\n", id); | |
765 | ret = -ENODEV; | |
8aa1fe81 | 766 | goto err_regmap; |
3a66d387 MB |
767 | } |
768 | ||
769 | reg = wm2000_read(i2c, WM2000_REG_REVISON); | |
770 | dev_info(&i2c->dev, "revision %c\n", reg + 'A'); | |
771 | ||
772 | filename = "wm2000_anc.bin"; | |
773 | pdata = dev_get_platdata(&i2c->dev); | |
774 | if (pdata) { | |
775 | wm2000->mclk_div = pdata->mclkdiv2; | |
776 | wm2000->speech_clarity = !pdata->speech_enh_disable; | |
777 | ||
778 | if (pdata->download_file) | |
779 | filename = pdata->download_file; | |
780 | } | |
781 | ||
782 | ret = request_firmware(&fw, filename, &i2c->dev); | |
783 | if (ret != 0) { | |
784 | dev_err(&i2c->dev, "Failed to acquire ANC data: %d\n", ret); | |
8aa1fe81 | 785 | goto err_regmap; |
3a66d387 MB |
786 | } |
787 | ||
788 | /* Pre-cook the concatenation of the register address onto the image */ | |
789 | wm2000->anc_download_size = fw->size + 2; | |
b03e96e4 MB |
790 | wm2000->anc_download = devm_kzalloc(&i2c->dev, |
791 | wm2000->anc_download_size, | |
792 | GFP_KERNEL); | |
3a66d387 MB |
793 | if (wm2000->anc_download == NULL) { |
794 | dev_err(&i2c->dev, "Out of memory\n"); | |
795 | ret = -ENOMEM; | |
796 | goto err_fw; | |
797 | } | |
798 | ||
799 | wm2000->anc_download[0] = 0x80; | |
800 | wm2000->anc_download[1] = 0x00; | |
801 | memcpy(wm2000->anc_download + 2, fw->data, fw->size); | |
802 | ||
803 | release_firmware(fw); | |
804 | ||
3a66d387 | 805 | wm2000->anc_eng_ena = 1; |
e71fa370 MB |
806 | wm2000->anc_active = 1; |
807 | wm2000->spk_ena = 1; | |
3a66d387 MB |
808 | wm2000->i2c = i2c; |
809 | ||
810 | wm2000_reset(wm2000); | |
811 | ||
4911ccdb MB |
812 | ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000, |
813 | NULL, 0); | |
814 | if (ret != 0) | |
815 | goto err_fw; | |
3a66d387 MB |
816 | |
817 | return 0; | |
818 | ||
819 | err_fw: | |
820 | release_firmware(fw); | |
8aa1fe81 MB |
821 | err_regmap: |
822 | regmap_exit(wm2000->regmap); | |
3a66d387 | 823 | err: |
3a66d387 MB |
824 | return ret; |
825 | } | |
826 | ||
827 | static __devexit int wm2000_i2c_remove(struct i2c_client *i2c) | |
828 | { | |
829 | struct wm2000_priv *wm2000 = dev_get_drvdata(&i2c->dev); | |
830 | ||
4911ccdb | 831 | snd_soc_unregister_codec(&i2c->dev); |
8aa1fe81 MB |
832 | regmap_exit(wm2000->regmap); |
833 | ||
3a66d387 MB |
834 | return 0; |
835 | } | |
836 | ||
3a66d387 MB |
837 | static const struct i2c_device_id wm2000_i2c_id[] = { |
838 | { "wm2000", 0 }, | |
839 | { } | |
840 | }; | |
841 | MODULE_DEVICE_TABLE(i2c, wm2000_i2c_id); | |
842 | ||
843 | static struct i2c_driver wm2000_i2c_driver = { | |
844 | .driver = { | |
845 | .name = "wm2000", | |
846 | .owner = THIS_MODULE, | |
847 | }, | |
848 | .probe = wm2000_i2c_probe, | |
849 | .remove = __devexit_p(wm2000_i2c_remove), | |
3a66d387 MB |
850 | .id_table = wm2000_i2c_id, |
851 | }; | |
852 | ||
853 | static int __init wm2000_init(void) | |
854 | { | |
855 | return i2c_add_driver(&wm2000_i2c_driver); | |
856 | } | |
857 | module_init(wm2000_init); | |
858 | ||
859 | static void __exit wm2000_exit(void) | |
860 | { | |
861 | i2c_del_driver(&wm2000_i2c_driver); | |
862 | } | |
863 | module_exit(wm2000_exit); | |
864 | ||
865 | MODULE_DESCRIPTION("ASoC WM2000 driver"); | |
866 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>"); | |
867 | MODULE_LICENSE("GPL"); |