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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / sound / soc / codecs / twl6040.c
blob64a807f1a8a1812e4b01d891b8809f69ce1bf1f9
1 /*
2 * ALSA SoC TWL6040 codec driver
3 *
4 * Author: Misael Lopez Cruz <x0052729@ti.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22 #include <linux/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/init.h>
25 #include <linux/delay.h>
26 #include <linux/pm.h>
27 #include <linux/i2c.h>
28 #include <linux/gpio.h>
29 #include <linux/platform_device.h>
30 #include <linux/slab.h>
31 #include <linux/i2c/twl.h>
32
33 #include <sound/core.h>
34 #include <sound/pcm.h>
35 #include <sound/pcm_params.h>
36 #include <sound/soc.h>
37 #include <sound/soc-dapm.h>
38 #include <sound/initval.h>
39 #include <sound/tlv.h>
40
41 #include "twl6040.h"
42
43 #define TWL6040_RATES (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
44 #define TWL6040_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
45
46 /* codec private data */
47 struct twl6040_data {
48 struct snd_soc_codec codec;
49 int audpwron;
50 int naudint;
51 int codec_powered;
52 int pll;
53 int non_lp;
54 unsigned int sysclk;
55 struct snd_pcm_hw_constraint_list *sysclk_constraints;
56 struct completion ready;
57 };
58
59 /*
60 * twl6040 register cache & default register settings
61 */
62 static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
63 0x00, /* not used 0x00 */
64 0x4B, /* TWL6040_ASICID (ro) 0x01 */
65 0x00, /* TWL6040_ASICREV (ro) 0x02 */
66 0x00, /* TWL6040_INTID 0x03 */
67 0x00, /* TWL6040_INTMR 0x04 */
68 0x00, /* TWL6040_NCPCTRL 0x05 */
69 0x00, /* TWL6040_LDOCTL 0x06 */
70 0x60, /* TWL6040_HPPLLCTL 0x07 */
71 0x00, /* TWL6040_LPPLLCTL 0x08 */
72 0x4A, /* TWL6040_LPPLLDIV 0x09 */
73 0x00, /* TWL6040_AMICBCTL 0x0A */
74 0x00, /* TWL6040_DMICBCTL 0x0B */
75 0x18, /* TWL6040_MICLCTL 0x0C - No input selected on Left Mic */
76 0x18, /* TWL6040_MICRCTL 0x0D - No input selected on Right Mic */
77 0x00, /* TWL6040_MICGAIN 0x0E */
78 0x1B, /* TWL6040_LINEGAIN 0x0F */
79 0x00, /* TWL6040_HSLCTL 0x10 */
80 0x00, /* TWL6040_HSRCTL 0x11 */
81 0x00, /* TWL6040_HSGAIN 0x12 */
82 0x00, /* TWL6040_EARCTL 0x13 */
83 0x00, /* TWL6040_HFLCTL 0x14 */
84 0x00, /* TWL6040_HFLGAIN 0x15 */
85 0x00, /* TWL6040_HFRCTL 0x16 */
86 0x00, /* TWL6040_HFRGAIN 0x17 */
87 0x00, /* TWL6040_VIBCTLL 0x18 */
88 0x00, /* TWL6040_VIBDATL 0x19 */
89 0x00, /* TWL6040_VIBCTLR 0x1A */
90 0x00, /* TWL6040_VIBDATR 0x1B */
91 0x00, /* TWL6040_HKCTL1 0x1C */
92 0x00, /* TWL6040_HKCTL2 0x1D */
93 0x00, /* TWL6040_GPOCTL 0x1E */
94 0x00, /* TWL6040_ALB 0x1F */
95 0x00, /* TWL6040_DLB 0x20 */
96 0x00, /* not used 0x21 */
97 0x00, /* not used 0x22 */
98 0x00, /* not used 0x23 */
99 0x00, /* not used 0x24 */
100 0x00, /* not used 0x25 */
101 0x00, /* not used 0x26 */
102 0x00, /* not used 0x27 */
103 0x00, /* TWL6040_TRIM1 0x28 */
104 0x00, /* TWL6040_TRIM2 0x29 */
105 0x00, /* TWL6040_TRIM3 0x2A */
106 0x00, /* TWL6040_HSOTRIM 0x2B */
107 0x00, /* TWL6040_HFOTRIM 0x2C */
108 0x09, /* TWL6040_ACCCTL 0x2D */
109 0x00, /* TWL6040_STATUS (ro) 0x2E */
110 };
111
112 /*
113 * twl6040 vio/gnd registers:
114 * registers under vio/gnd supply can be accessed
115 * before the power-up sequence, after NRESPWRON goes high
116 */
117 static const int twl6040_vio_reg[TWL6040_VIOREGNUM] = {
118 TWL6040_REG_ASICID,
119 TWL6040_REG_ASICREV,
120 TWL6040_REG_INTID,
121 TWL6040_REG_INTMR,
122 TWL6040_REG_NCPCTL,
123 TWL6040_REG_LDOCTL,
124 TWL6040_REG_AMICBCTL,
125 TWL6040_REG_DMICBCTL,
126 TWL6040_REG_HKCTL1,
127 TWL6040_REG_HKCTL2,
128 TWL6040_REG_GPOCTL,
129 TWL6040_REG_TRIM1,
130 TWL6040_REG_TRIM2,
131 TWL6040_REG_TRIM3,
132 TWL6040_REG_HSOTRIM,
133 TWL6040_REG_HFOTRIM,
134 TWL6040_REG_ACCCTL,
135 TWL6040_REG_STATUS,
136 };
137
138 /*
139 * twl6040 vdd/vss registers:
140 * registers under vdd/vss supplies can only be accessed
141 * after the power-up sequence
142 */
143 static const int twl6040_vdd_reg[TWL6040_VDDREGNUM] = {
144 TWL6040_REG_HPPLLCTL,
145 TWL6040_REG_LPPLLCTL,
146 TWL6040_REG_LPPLLDIV,
147 TWL6040_REG_MICLCTL,
148 TWL6040_REG_MICRCTL,
149 TWL6040_REG_MICGAIN,
150 TWL6040_REG_LINEGAIN,
151 TWL6040_REG_HSLCTL,
152 TWL6040_REG_HSRCTL,
153 TWL6040_REG_HSGAIN,
154 TWL6040_REG_EARCTL,
155 TWL6040_REG_HFLCTL,
156 TWL6040_REG_HFLGAIN,
157 TWL6040_REG_HFRCTL,
158 TWL6040_REG_HFRGAIN,
159 TWL6040_REG_VIBCTLL,
160 TWL6040_REG_VIBDATL,
161 TWL6040_REG_VIBCTLR,
162 TWL6040_REG_VIBDATR,
163 TWL6040_REG_ALB,
164 TWL6040_REG_DLB,
165 };
166
167 /*
168 * read twl6040 register cache
169 */
170 static inline unsigned int twl6040_read_reg_cache(struct snd_soc_codec *codec,
171 unsigned int reg)
172 {
173 u8 *cache = codec->reg_cache;
174
175 if (reg >= TWL6040_CACHEREGNUM)
176 return -EIO;
177
178 return cache[reg];
179 }
180
181 /*
182 * write twl6040 register cache
183 */
184 static inline void twl6040_write_reg_cache(struct snd_soc_codec *codec,
185 u8 reg, u8 value)
186 {
187 u8 *cache = codec->reg_cache;
188
189 if (reg >= TWL6040_CACHEREGNUM)
190 return;
191 cache[reg] = value;
192 }
193
194 /*
195 * read from twl6040 hardware register
196 */
197 static int twl6040_read_reg_volatile(struct snd_soc_codec *codec,
198 unsigned int reg)
199 {
200 u8 value;
201
202 if (reg >= TWL6040_CACHEREGNUM)
203 return -EIO;
204
205 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &value, reg);
206 twl6040_write_reg_cache(codec, reg, value);
207
208 return value;
209 }
210
211 /*
212 * write to the twl6040 register space
213 */
214 static int twl6040_write(struct snd_soc_codec *codec,
215 unsigned int reg, unsigned int value)
216 {
217 if (reg >= TWL6040_CACHEREGNUM)
218 return -EIO;
219
220 twl6040_write_reg_cache(codec, reg, value);
221 return twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
222 }
223
224 static void twl6040_init_vio_regs(struct snd_soc_codec *codec)
225 {
226 u8 *cache = codec->reg_cache;
227 int reg, i;
228
229 /* allow registers to be accessed by i2c */
230 twl6040_write(codec, TWL6040_REG_ACCCTL, cache[TWL6040_REG_ACCCTL]);
231
232 for (i = 0; i < TWL6040_VIOREGNUM; i++) {
233 reg = twl6040_vio_reg[i];
234 /* skip read-only registers (ASICID, ASICREV, STATUS) */
235 switch (reg) {
236 case TWL6040_REG_ASICID:
237 case TWL6040_REG_ASICREV:
238 case TWL6040_REG_STATUS:
239 continue;
240 default:
241 break;
242 }
243 twl6040_write(codec, reg, cache[reg]);
244 }
245 }
246
247 static void twl6040_init_vdd_regs(struct snd_soc_codec *codec)
248 {
249 u8 *cache = codec->reg_cache;
250 int reg, i;
251
252 for (i = 0; i < TWL6040_VDDREGNUM; i++) {
253 reg = twl6040_vdd_reg[i];
254 twl6040_write(codec, reg, cache[reg]);
255 }
256 }
257
258 /* twl6040 codec manual power-up sequence */
259 static void twl6040_power_up(struct snd_soc_codec *codec)
260 {
261 u8 ncpctl, ldoctl, lppllctl, accctl;
262
263 ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
264 ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
265 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
266 accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
267
268 /* enable reference system */
269 ldoctl |= TWL6040_REFENA;
270 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
271 msleep(10);
272 /* enable internal oscillator */
273 ldoctl |= TWL6040_OSCENA;
274 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
275 udelay(10);
276 /* enable high-side ldo */
277 ldoctl |= TWL6040_HSLDOENA;
278 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
279 udelay(244);
280 /* enable negative charge pump */
281 ncpctl |= TWL6040_NCPENA | TWL6040_NCPOPEN;
282 twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
283 udelay(488);
284 /* enable low-side ldo */
285 ldoctl |= TWL6040_LSLDOENA;
286 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
287 udelay(244);
288 /* enable low-power pll */
289 lppllctl |= TWL6040_LPLLENA;
290 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
291 /* reset state machine */
292 accctl |= TWL6040_RESETSPLIT;
293 twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
294 mdelay(5);
295 accctl &= ~TWL6040_RESETSPLIT;
296 twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
297 /* disable internal oscillator */
298 ldoctl &= ~TWL6040_OSCENA;
299 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
300 }
301
302 /* twl6040 codec manual power-down sequence */
303 static void twl6040_power_down(struct snd_soc_codec *codec)
304 {
305 u8 ncpctl, ldoctl, lppllctl, accctl;
306
307 ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
308 ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
309 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
310 accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
311
312 /* enable internal oscillator */
313 ldoctl |= TWL6040_OSCENA;
314 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
315 udelay(10);
316 /* disable low-power pll */
317 lppllctl &= ~TWL6040_LPLLENA;
318 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
319 /* disable low-side ldo */
320 ldoctl &= ~TWL6040_LSLDOENA;
321 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
322 udelay(244);
323 /* disable negative charge pump */
324 ncpctl &= ~(TWL6040_NCPENA | TWL6040_NCPOPEN);
325 twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
326 udelay(488);
327 /* disable high-side ldo */
328 ldoctl &= ~TWL6040_HSLDOENA;
329 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
330 udelay(244);
331 /* disable internal oscillator */
332 ldoctl &= ~TWL6040_OSCENA;
333 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
334 /* disable reference system */
335 ldoctl &= ~TWL6040_REFENA;
336 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
337 msleep(10);
338 }
339
340 /* set headset dac and driver power mode */
341 static int headset_power_mode(struct snd_soc_codec *codec, int high_perf)
342 {
343 int hslctl, hsrctl;
344 int mask = TWL6040_HSDRVMODEL | TWL6040_HSDACMODEL;
345
346 hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL);
347 hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL);
348
349 if (high_perf) {
350 hslctl &= ~mask;
351 hsrctl &= ~mask;
352 } else {
353 hslctl |= mask;
354 hsrctl |= mask;
355 }
356
357 twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl);
358 twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl);
359
360 return 0;
361 }
362
363 static int twl6040_hs_dac_event(struct snd_soc_dapm_widget *w,
364 struct snd_kcontrol *kcontrol, int event)
365 {
366 msleep(1);
367 return 0;
368 }
369
370 static int twl6040_power_mode_event(struct snd_soc_dapm_widget *w,
371 struct snd_kcontrol *kcontrol, int event)
372 {
373 struct snd_soc_codec *codec = w->codec;
374 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
375
376 if (SND_SOC_DAPM_EVENT_ON(event))
377 priv->non_lp++;
378 else
379 priv->non_lp--;
380
381 msleep(1);
382
383 return 0;
384 }
385
386 /* audio interrupt handler */
387 static irqreturn_t twl6040_naudint_handler(int irq, void *data)
388 {
389 struct snd_soc_codec *codec = data;
390 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
391 u8 intid;
392
393 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid, TWL6040_REG_INTID);
394
395 switch (intid) {
396 case TWL6040_THINT:
397 dev_alert(codec->dev, "die temp over-limit detection\n");
398 break;
399 case TWL6040_PLUGINT:
400 case TWL6040_UNPLUGINT:
401 case TWL6040_HOOKINT:
402 break;
403 case TWL6040_HFINT:
404 dev_alert(codec->dev, "hf drivers over current detection\n");
405 break;
406 case TWL6040_VIBINT:
407 dev_alert(codec->dev, "vib drivers over current detection\n");
408 break;
409 case TWL6040_READYINT:
410 complete(&priv->ready);
411 break;
412 default:
413 dev_err(codec->dev, "unknown audio interrupt %d\n", intid);
414 break;
415 }
416
417 return IRQ_HANDLED;
418 }
419
420 /*
421 * MICATT volume control:
422 * from -6 to 0 dB in 6 dB steps
423 */
424 static DECLARE_TLV_DB_SCALE(mic_preamp_tlv, -600, 600, 0);
425
426 /*
427 * MICGAIN volume control:
428 * from 6 to 30 dB in 6 dB steps
429 */
430 static DECLARE_TLV_DB_SCALE(mic_amp_tlv, 600, 600, 0);
431
432 /*
433 * HSGAIN volume control:
434 * from -30 to 0 dB in 2 dB steps
435 */
436 static DECLARE_TLV_DB_SCALE(hs_tlv, -3000, 200, 0);
437
438 /*
439 * HFGAIN volume control:
440 * from -52 to 6 dB in 2 dB steps
441 */
442 static DECLARE_TLV_DB_SCALE(hf_tlv, -5200, 200, 0);
443
444 /*
445 * EPGAIN volume control:
446 * from -24 to 6 dB in 2 dB steps
447 */
448 static DECLARE_TLV_DB_SCALE(ep_tlv, -2400, 200, 0);
449
450 /* Left analog microphone selection */
451 static const char *twl6040_amicl_texts[] =
452 {"Headset Mic", "Main Mic", "Aux/FM Left", "Off"};
453
454 /* Right analog microphone selection */
455 static const char *twl6040_amicr_texts[] =
456 {"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};
457
458 static const struct soc_enum twl6040_enum[] = {
459 SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 3, twl6040_amicl_texts),
460 SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 3, twl6040_amicr_texts),
461 };
462
463 static const struct snd_kcontrol_new amicl_control =
464 SOC_DAPM_ENUM("Route", twl6040_enum[0]);
465
466 static const struct snd_kcontrol_new amicr_control =
467 SOC_DAPM_ENUM("Route", twl6040_enum[1]);
468
469 /* Headset DAC playback switches */
470 static const struct snd_kcontrol_new hsdacl_switch_controls =
471 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 5, 1, 0);
472
473 static const struct snd_kcontrol_new hsdacr_switch_controls =
474 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 5, 1, 0);
475
476 /* Handsfree DAC playback switches */
477 static const struct snd_kcontrol_new hfdacl_switch_controls =
478 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 2, 1, 0);
479
480 static const struct snd_kcontrol_new hfdacr_switch_controls =
481 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 2, 1, 0);
482
483 static const struct snd_kcontrol_new ep_driver_switch_controls =
484 SOC_DAPM_SINGLE("Switch", TWL6040_REG_EARCTL, 0, 1, 0);
485
486 static const struct snd_kcontrol_new twl6040_snd_controls[] = {
487 /* Capture gains */
488 SOC_DOUBLE_TLV("Capture Preamplifier Volume",
489 TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv),
490 SOC_DOUBLE_TLV("Capture Volume",
491 TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv),
492
493 /* Playback gains */
494 SOC_DOUBLE_TLV("Headset Playback Volume",
495 TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
496 SOC_DOUBLE_R_TLV("Handsfree Playback Volume",
497 TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
498 SOC_SINGLE_TLV("Earphone Playback Volume",
499 TWL6040_REG_EARCTL, 1, 0xF, 1, ep_tlv),
500 };
501
502 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
503 /* Inputs */
504 SND_SOC_DAPM_INPUT("MAINMIC"),
505 SND_SOC_DAPM_INPUT("HSMIC"),
506 SND_SOC_DAPM_INPUT("SUBMIC"),
507 SND_SOC_DAPM_INPUT("AFML"),
508 SND_SOC_DAPM_INPUT("AFMR"),
509
510 /* Outputs */
511 SND_SOC_DAPM_OUTPUT("HSOL"),
512 SND_SOC_DAPM_OUTPUT("HSOR"),
513 SND_SOC_DAPM_OUTPUT("HFL"),
514 SND_SOC_DAPM_OUTPUT("HFR"),
515 SND_SOC_DAPM_OUTPUT("EP"),
516
517 /* Analog input muxes for the capture amplifiers */
518 SND_SOC_DAPM_MUX("Analog Left Capture Route",
519 SND_SOC_NOPM, 0, 0, &amicl_control),
520 SND_SOC_DAPM_MUX("Analog Right Capture Route",
521 SND_SOC_NOPM, 0, 0, &amicr_control),
522
523 /* Analog capture PGAs */
524 SND_SOC_DAPM_PGA("MicAmpL",
525 TWL6040_REG_MICLCTL, 0, 0, NULL, 0),
526 SND_SOC_DAPM_PGA("MicAmpR",
527 TWL6040_REG_MICRCTL, 0, 0, NULL, 0),
528
529 /* ADCs */
530 SND_SOC_DAPM_ADC("ADC Left", "Left Front Capture",
531 TWL6040_REG_MICLCTL, 2, 0),
532 SND_SOC_DAPM_ADC("ADC Right", "Right Front Capture",
533 TWL6040_REG_MICRCTL, 2, 0),
534
535 /* Microphone bias */
536 SND_SOC_DAPM_MICBIAS("Headset Mic Bias",
537 TWL6040_REG_AMICBCTL, 0, 0),
538 SND_SOC_DAPM_MICBIAS("Main Mic Bias",
539 TWL6040_REG_AMICBCTL, 4, 0),
540 SND_SOC_DAPM_MICBIAS("Digital Mic1 Bias",
541 TWL6040_REG_DMICBCTL, 0, 0),
542 SND_SOC_DAPM_MICBIAS("Digital Mic2 Bias",
543 TWL6040_REG_DMICBCTL, 4, 0),
544
545 /* DACs */
546 SND_SOC_DAPM_DAC_E("HSDAC Left", "Headset Playback",
547 TWL6040_REG_HSLCTL, 0, 0,
548 twl6040_hs_dac_event,
549 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
550 SND_SOC_DAPM_DAC_E("HSDAC Right", "Headset Playback",
551 TWL6040_REG_HSRCTL, 0, 0,
552 twl6040_hs_dac_event,
553 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
554 SND_SOC_DAPM_DAC_E("HFDAC Left", "Handsfree Playback",
555 TWL6040_REG_HFLCTL, 0, 0,
556 twl6040_power_mode_event,
557 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
558 SND_SOC_DAPM_DAC_E("HFDAC Right", "Handsfree Playback",
559 TWL6040_REG_HFRCTL, 0, 0,
560 twl6040_power_mode_event,
561 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
562
563 /* Analog playback switches */
564 SND_SOC_DAPM_SWITCH("HSDAC Left Playback",
565 SND_SOC_NOPM, 0, 0, &hsdacl_switch_controls),
566 SND_SOC_DAPM_SWITCH("HSDAC Right Playback",
567 SND_SOC_NOPM, 0, 0, &hsdacr_switch_controls),
568 SND_SOC_DAPM_SWITCH("HFDAC Left Playback",
569 SND_SOC_NOPM, 0, 0, &hfdacl_switch_controls),
570 SND_SOC_DAPM_SWITCH("HFDAC Right Playback",
571 SND_SOC_NOPM, 0, 0, &hfdacr_switch_controls),
572
573 /* Analog playback drivers */
574 SND_SOC_DAPM_PGA_E("Handsfree Left Driver",
575 TWL6040_REG_HFLCTL, 4, 0, NULL, 0,
576 twl6040_power_mode_event,
577 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
578 SND_SOC_DAPM_PGA_E("Handsfree Right Driver",
579 TWL6040_REG_HFRCTL, 4, 0, NULL, 0,
580 twl6040_power_mode_event,
581 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
582 SND_SOC_DAPM_PGA("Headset Left Driver",
583 TWL6040_REG_HSLCTL, 2, 0, NULL, 0),
584 SND_SOC_DAPM_PGA("Headset Right Driver",
585 TWL6040_REG_HSRCTL, 2, 0, NULL, 0),
586 SND_SOC_DAPM_SWITCH_E("Earphone Driver",
587 SND_SOC_NOPM, 0, 0, &ep_driver_switch_controls,
588 twl6040_power_mode_event,
589 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
590
591 /* Analog playback PGAs */
592 SND_SOC_DAPM_PGA("HFDAC Left PGA",
593 TWL6040_REG_HFLCTL, 1, 0, NULL, 0),
594 SND_SOC_DAPM_PGA("HFDAC Right PGA",
595 TWL6040_REG_HFRCTL, 1, 0, NULL, 0),
596
597 };
598
599 static const struct snd_soc_dapm_route intercon[] = {
600 /* Capture path */
601 {"Analog Left Capture Route", "Headset Mic", "HSMIC"},
602 {"Analog Left Capture Route", "Main Mic", "MAINMIC"},
603 {"Analog Left Capture Route", "Aux/FM Left", "AFML"},
604
605 {"Analog Right Capture Route", "Headset Mic", "HSMIC"},
606 {"Analog Right Capture Route", "Sub Mic", "SUBMIC"},
607 {"Analog Right Capture Route", "Aux/FM Right", "AFMR"},
608
609 {"MicAmpL", NULL, "Analog Left Capture Route"},
610 {"MicAmpR", NULL, "Analog Right Capture Route"},
611
612 {"ADC Left", NULL, "MicAmpL"},
613 {"ADC Right", NULL, "MicAmpR"},
614
615 /* Headset playback path */
616 {"HSDAC Left Playback", "Switch", "HSDAC Left"},
617 {"HSDAC Right Playback", "Switch", "HSDAC Right"},
618
619 {"Headset Left Driver", NULL, "HSDAC Left Playback"},
620 {"Headset Right Driver", NULL, "HSDAC Right Playback"},
621
622 {"HSOL", NULL, "Headset Left Driver"},
623 {"HSOR", NULL, "Headset Right Driver"},
624
625 /* Earphone playback path */
626 {"Earphone Driver", "Switch", "HSDAC Left"},
627 {"EP", NULL, "Earphone Driver"},
628
629 /* Handsfree playback path */
630 {"HFDAC Left Playback", "Switch", "HFDAC Left"},
631 {"HFDAC Right Playback", "Switch", "HFDAC Right"},
632
633 {"HFDAC Left PGA", NULL, "HFDAC Left Playback"},
634 {"HFDAC Right PGA", NULL, "HFDAC Right Playback"},
635
636 {"Handsfree Left Driver", "Switch", "HFDAC Left PGA"},
637 {"Handsfree Right Driver", "Switch", "HFDAC Right PGA"},
638
639 {"HFL", NULL, "Handsfree Left Driver"},
640 {"HFR", NULL, "Handsfree Right Driver"},
641 };
642
643 static int twl6040_add_widgets(struct snd_soc_codec *codec)
644 {
645 snd_soc_dapm_new_controls(codec, twl6040_dapm_widgets,
646 ARRAY_SIZE(twl6040_dapm_widgets));
647
648 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
649
650 snd_soc_dapm_new_widgets(codec);
651
652 return 0;
653 }
654
655 static int twl6040_power_up_completion(struct snd_soc_codec *codec,
656 int naudint)
657 {
658 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
659 int time_left;
660 u8 intid;
661
662 time_left = wait_for_completion_timeout(&priv->ready,
663 msecs_to_jiffies(48));
664
665 if (!time_left) {
666 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid,
667 TWL6040_REG_INTID);
668 if (!(intid & TWL6040_READYINT)) {
669 dev_err(codec->dev, "timeout waiting for READYINT\n");
670 return -ETIMEDOUT;
671 }
672 }
673
674 priv->codec_powered = 1;
675
676 return 0;
677 }
678
679 static int twl6040_set_bias_level(struct snd_soc_codec *codec,
680 enum snd_soc_bias_level level)
681 {
682 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
683 int audpwron = priv->audpwron;
684 int naudint = priv->naudint;
685 int ret;
686
687 switch (level) {
688 case SND_SOC_BIAS_ON:
689 break;
690 case SND_SOC_BIAS_PREPARE:
691 break;
692 case SND_SOC_BIAS_STANDBY:
693 if (priv->codec_powered)
694 break;
695
696 if (gpio_is_valid(audpwron)) {
697 /* use AUDPWRON line */
698 gpio_set_value(audpwron, 1);
699
700 /* wait for power-up completion */
701 ret = twl6040_power_up_completion(codec, naudint);
702 if (ret)
703 return ret;
704
705 /* sync registers updated during power-up sequence */
706 twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
707 twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
708 twl6040_read_reg_volatile(codec, TWL6040_REG_LPPLLCTL);
709 } else {
710 /* use manual power-up sequence */
711 twl6040_power_up(codec);
712 priv->codec_powered = 1;
713 }
714
715 /* initialize vdd/vss registers with reg_cache */
716 twl6040_init_vdd_regs(codec);
717 break;
718 case SND_SOC_BIAS_OFF:
719 if (!priv->codec_powered)
720 break;
721
722 if (gpio_is_valid(audpwron)) {
723 /* use AUDPWRON line */
724 gpio_set_value(audpwron, 0);
725
726 /* power-down sequence latency */
727 udelay(500);
728
729 /* sync registers updated during power-down sequence */
730 twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
731 twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
732 twl6040_write_reg_cache(codec, TWL6040_REG_LPPLLCTL,
733 0x00);
734 } else {
735 /* use manual power-down sequence */
736 twl6040_power_down(codec);
737 }
738
739 priv->codec_powered = 0;
740 break;
741 }
742
743 codec->bias_level = level;
744
745 return 0;
746 }
747
748 /* set of rates for each pll: low-power and high-performance */
749
750 static unsigned int lp_rates[] = {
751 88200,
752 96000,
753 };
754
755 static struct snd_pcm_hw_constraint_list lp_constraints = {
756 .count = ARRAY_SIZE(lp_rates),
757 .list = lp_rates,
758 };
759
760 static unsigned int hp_rates[] = {
761 96000,
762 };
763
764 static struct snd_pcm_hw_constraint_list hp_constraints = {
765 .count = ARRAY_SIZE(hp_rates),
766 .list = hp_rates,
767 };
768
769 static int twl6040_startup(struct snd_pcm_substream *substream,
770 struct snd_soc_dai *dai)
771 {
772 struct snd_soc_pcm_runtime *rtd = substream->private_data;
773 struct snd_soc_device *socdev = rtd->socdev;
774 struct snd_soc_codec *codec = socdev->card->codec;
775 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
776
777 if (!priv->sysclk) {
778 dev_err(codec->dev,
779 "no mclk configured, call set_sysclk() on init\n");
780 return -EINVAL;
781 }
782
783 /*
784 * capture is not supported at 17.64 MHz,
785 * it's reserved for headset low-power playback scenario
786 */
787 if ((priv->sysclk == 17640000) && substream->stream) {
788 dev_err(codec->dev,
789 "capture mode is not supported at %dHz\n",
790 priv->sysclk);
791 return -EINVAL;
792 }
793
794 snd_pcm_hw_constraint_list(substream->runtime, 0,
795 SNDRV_PCM_HW_PARAM_RATE,
796 priv->sysclk_constraints);
797
798 return 0;
799 }
800
801 static int twl6040_hw_params(struct snd_pcm_substream *substream,
802 struct snd_pcm_hw_params *params,
803 struct snd_soc_dai *dai)
804 {
805 struct snd_soc_pcm_runtime *rtd = substream->private_data;
806 struct snd_soc_device *socdev = rtd->socdev;
807 struct snd_soc_codec *codec = socdev->card->codec;
808 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
809 u8 lppllctl;
810 int rate;
811
812 /* nothing to do for high-perf pll, it supports only 48 kHz */
813 if (priv->pll == TWL6040_HPPLL_ID)
814 return 0;
815
816 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
817
818 rate = params_rate(params);
819 switch (rate) {
820 case 88200:
821 lppllctl |= TWL6040_LPLLFIN;
822 priv->sysclk = 17640000;
823 break;
824 case 96000:
825 lppllctl &= ~TWL6040_LPLLFIN;
826 priv->sysclk = 19200000;
827 break;
828 default:
829 dev_err(codec->dev, "unsupported rate %d\n", rate);
830 return -EINVAL;
831 }
832
833 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
834
835 return 0;
836 }
837
838 static int twl6040_trigger(struct snd_pcm_substream *substream,
839 int cmd, struct snd_soc_dai *dai)
840 {
841 struct snd_soc_pcm_runtime *rtd = substream->private_data;
842 struct snd_soc_device *socdev = rtd->socdev;
843 struct snd_soc_codec *codec = socdev->card->codec;
844 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
845
846 switch (cmd) {
847 case SNDRV_PCM_TRIGGER_START:
848 case SNDRV_PCM_TRIGGER_RESUME:
849 /*
850 * low-power playback mode is restricted
851 * for headset path only
852 */
853 if ((priv->sysclk == 17640000) && priv->non_lp) {
854 dev_err(codec->dev,
855 "some enabled paths aren't supported at %dHz\n",
856 priv->sysclk);
857 return -EPERM;
858 }
859 break;
860 default:
861 break;
862 }
863
864 return 0;
865 }
866
867 static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai,
868 int clk_id, unsigned int freq, int dir)
869 {
870 struct snd_soc_codec *codec = codec_dai->codec;
871 struct twl6040_data *priv = snd_soc_codec_get_drvdata(codec);
872 u8 hppllctl, lppllctl;
873
874 hppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_HPPLLCTL);
875 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
876
877 switch (clk_id) {
878 case TWL6040_SYSCLK_SEL_LPPLL:
879 switch (freq) {
880 case 32768:
881 /* headset dac and driver must be in low-power mode */
882 headset_power_mode(codec, 0);
883
884 /* clk32k input requires low-power pll */
885 lppllctl |= TWL6040_LPLLENA;
886 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
887 mdelay(5);
888 lppllctl &= ~TWL6040_HPLLSEL;
889 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
890 hppllctl &= ~TWL6040_HPLLENA;
891 twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
892 break;
893 default:
894 dev_err(codec->dev, "unknown mclk freq %d\n", freq);
895 return -EINVAL;
896 }
897
898 /* lppll divider */
899 switch (priv->sysclk) {
900 case 17640000:
901 lppllctl |= TWL6040_LPLLFIN;
902 break;
903 case 19200000:
904 lppllctl &= ~TWL6040_LPLLFIN;
905 break;
906 default:
907 /* sysclk not yet configured */
908 lppllctl &= ~TWL6040_LPLLFIN;
909 priv->sysclk = 19200000;
910 break;
911 }
912
913 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
914
915 priv->pll = TWL6040_LPPLL_ID;
916 priv->sysclk_constraints = &lp_constraints;
917 break;
918 case TWL6040_SYSCLK_SEL_HPPLL:
919 hppllctl &= ~TWL6040_MCLK_MSK;
920
921 switch (freq) {
922 case 12000000:
923 /* mclk input, pll enabled */
924 hppllctl |= TWL6040_MCLK_12000KHZ |
925 TWL6040_HPLLSQRBP |
926 TWL6040_HPLLENA;
927 break;
928 case 19200000:
929 /* mclk input, pll disabled */
930 hppllctl |= TWL6040_MCLK_19200KHZ |
931 TWL6040_HPLLSQRENA |
932 TWL6040_HPLLBP;
933 break;
934 case 26000000:
935 /* mclk input, pll enabled */
936 hppllctl |= TWL6040_MCLK_26000KHZ |
937 TWL6040_HPLLSQRBP |
938 TWL6040_HPLLENA;
939 break;
940 case 38400000:
941 /* clk slicer, pll disabled */
942 hppllctl |= TWL6040_MCLK_38400KHZ |
943 TWL6040_HPLLSQRENA |
944 TWL6040_HPLLBP;
945 break;
946 default:
947 dev_err(codec->dev, "unknown mclk freq %d\n", freq);
948 return -EINVAL;
949 }
950
951 /* headset dac and driver must be in high-performance mode */
952 headset_power_mode(codec, 1);
953
954 twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
955 udelay(500);
956 lppllctl |= TWL6040_HPLLSEL;
957 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
958 lppllctl &= ~TWL6040_LPLLENA;
959 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
960
961 /* high-performance pll can provide only 19.2 MHz */
962 priv->pll = TWL6040_HPPLL_ID;
963 priv->sysclk = 19200000;
964 priv->sysclk_constraints = &hp_constraints;
965 break;
966 default:
967 dev_err(codec->dev, "unknown clk_id %d\n", clk_id);
968 return -EINVAL;
969 }
970
971 return 0;
972 }
973
974 static struct snd_soc_dai_ops twl6040_dai_ops = {
975 .startup = twl6040_startup,
976 .hw_params = twl6040_hw_params,
977 .trigger = twl6040_trigger,
978 .set_sysclk = twl6040_set_dai_sysclk,
979 };
980
981 struct snd_soc_dai twl6040_dai = {
982 .name = "twl6040",
983 .playback = {
984 .stream_name = "Playback",
985 .channels_min = 1,
986 .channels_max = 4,
987 .rates = TWL6040_RATES,
988 .formats = TWL6040_FORMATS,
989 },
990 .capture = {
991 .stream_name = "Capture",
992 .channels_min = 1,
993 .channels_max = 2,
994 .rates = TWL6040_RATES,
995 .formats = TWL6040_FORMATS,
996 },
997 .ops = &twl6040_dai_ops,
998 };
999 EXPORT_SYMBOL_GPL(twl6040_dai);
1000
1001 #ifdef CONFIG_PM
1002 static int twl6040_suspend(struct platform_device *pdev, pm_message_t state)
1003 {
1004 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1005 struct snd_soc_codec *codec = socdev->card->codec;
1006
1007 twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1008
1009 return 0;
1010 }
1011
1012 static int twl6040_resume(struct platform_device *pdev)
1013 {
1014 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1015 struct snd_soc_codec *codec = socdev->card->codec;
1016
1017 twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1018
1019 return 0;
1020 }
1021 #else
1022 #define twl6040_suspend NULL
1023 #define twl6040_resume NULL
1024 #endif
1025
1026 static struct snd_soc_codec *twl6040_codec;
1027
1028 static int twl6040_probe(struct platform_device *pdev)
1029 {
1030 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1031 struct snd_soc_codec *codec;
1032 int ret = 0;
1033
1034 BUG_ON(!twl6040_codec);
1035
1036 codec = twl6040_codec;
1037 socdev->card->codec = codec;
1038
1039 /* register pcms */
1040 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1041 if (ret < 0) {
1042 dev_err(&pdev->dev, "failed to create pcms\n");
1043 return ret;
1044 }
1045
1046 snd_soc_add_controls(codec, twl6040_snd_controls,
1047 ARRAY_SIZE(twl6040_snd_controls));
1048 twl6040_add_widgets(codec);
1049
1050 if (ret < 0) {
1051 dev_err(&pdev->dev, "failed to register card\n");
1052 goto card_err;
1053 }
1054
1055 return ret;
1056
1057 card_err:
1058 snd_soc_free_pcms(socdev);
1059 snd_soc_dapm_free(socdev);
1060 return ret;
1061 }
1062
1063 static int twl6040_remove(struct platform_device *pdev)
1064 {
1065 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1066 struct snd_soc_codec *codec = socdev->card->codec;
1067
1068 twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1069 snd_soc_free_pcms(socdev);
1070 snd_soc_dapm_free(socdev);
1071 kfree(codec);
1072
1073 return 0;
1074 }
1075
1076 struct snd_soc_codec_device soc_codec_dev_twl6040 = {
1077 .probe = twl6040_probe,
1078 .remove = twl6040_remove,
1079 .suspend = twl6040_suspend,
1080 .resume = twl6040_resume,
1081 };
1082 EXPORT_SYMBOL_GPL(soc_codec_dev_twl6040);
1083
1084 static int __devinit twl6040_codec_probe(struct platform_device *pdev)
1085 {
1086 struct twl4030_codec_data *twl_codec = pdev->dev.platform_data;
1087 struct snd_soc_codec *codec;
1088 struct twl6040_data *priv;
1089 int audpwron, naudint;
1090 int ret = 0;
1091
1092 priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL);
1093 if (priv == NULL)
1094 return -ENOMEM;
1095
1096 if (twl_codec) {
1097 audpwron = twl_codec->audpwron_gpio;
1098 naudint = twl_codec->naudint_irq;
1099 } else {
1100 audpwron = -EINVAL;
1101 naudint = 0;
1102 }
1103
1104 priv->audpwron = audpwron;
1105 priv->naudint = naudint;
1106
1107 codec = &priv->codec;
1108 codec->dev = &pdev->dev;
1109 twl6040_dai.dev = &pdev->dev;
1110
1111 codec->name = "twl6040";
1112 codec->owner = THIS_MODULE;
1113 codec->read = twl6040_read_reg_cache;
1114 codec->write = twl6040_write;
1115 codec->set_bias_level = twl6040_set_bias_level;
1116 snd_soc_codec_set_drvdata(codec, priv);
1117 codec->dai = &twl6040_dai;
1118 codec->num_dai = 1;
1119 codec->reg_cache_size = ARRAY_SIZE(twl6040_reg);
1120 codec->reg_cache = kmemdup(twl6040_reg, sizeof(twl6040_reg),
1121 GFP_KERNEL);
1122 if (codec->reg_cache == NULL) {
1123 ret = -ENOMEM;
1124 goto cache_err;
1125 }
1126
1127 mutex_init(&codec->mutex);
1128 INIT_LIST_HEAD(&codec->dapm_widgets);
1129 INIT_LIST_HEAD(&codec->dapm_paths);
1130 init_completion(&priv->ready);
1131
1132 if (gpio_is_valid(audpwron)) {
1133 ret = gpio_request(audpwron, "audpwron");
1134 if (ret)
1135 goto gpio1_err;
1136
1137 ret = gpio_direction_output(audpwron, 0);
1138 if (ret)
1139 goto gpio2_err;
1140
1141 priv->codec_powered = 0;
1142 }
1143
1144 if (naudint) {
1145 /* audio interrupt */
1146 ret = request_threaded_irq(naudint, NULL,
1147 twl6040_naudint_handler,
1148 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
1149 "twl6040_codec", codec);
1150 if (ret)
1151 goto gpio2_err;
1152 } else {
1153 if (gpio_is_valid(audpwron)) {
1154 /* enable only codec ready interrupt */
1155 twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1156 ~TWL6040_READYMSK & TWL6040_ALLINT_MSK);
1157 } else {
1158 /* no interrupts at all */
1159 twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1160 TWL6040_ALLINT_MSK);
1161 }
1162 }
1163
1164 /* init vio registers */
1165 twl6040_init_vio_regs(codec);
1166
1167 /* power on device */
1168 ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1169 if (ret)
1170 goto irq_err;
1171
1172 ret = snd_soc_register_codec(codec);
1173 if (ret)
1174 goto reg_err;
1175
1176 twl6040_codec = codec;
1177
1178 ret = snd_soc_register_dai(&twl6040_dai);
1179 if (ret)
1180 goto dai_err;
1181
1182 return 0;
1183
1184 dai_err:
1185 snd_soc_unregister_codec(codec);
1186 twl6040_codec = NULL;
1187 reg_err:
1188 twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1189 irq_err:
1190 if (naudint)
1191 free_irq(naudint, codec);
1192 gpio2_err:
1193 if (gpio_is_valid(audpwron))
1194 gpio_free(audpwron);
1195 gpio1_err:
1196 kfree(codec->reg_cache);
1197 cache_err:
1198 kfree(priv);
1199 return ret;
1200 }
1201
1202 static int __devexit twl6040_codec_remove(struct platform_device *pdev)
1203 {
1204 struct twl6040_data *priv = snd_soc_codec_get_drvdata(twl6040_codec);
1205 int audpwron = priv->audpwron;
1206 int naudint = priv->naudint;
1207
1208 if (gpio_is_valid(audpwron))
1209 gpio_free(audpwron);
1210
1211 if (naudint)
1212 free_irq(naudint, twl6040_codec);
1213
1214 snd_soc_unregister_dai(&twl6040_dai);
1215 snd_soc_unregister_codec(twl6040_codec);
1216
1217 kfree(twl6040_codec);
1218 twl6040_codec = NULL;
1219
1220 return 0;
1221 }
1222
1223 static struct platform_driver twl6040_codec_driver = {
1224 .driver = {
1225 .name = "twl6040_codec",
1226 .owner = THIS_MODULE,
1227 },
1228 .probe = twl6040_codec_probe,
1229 .remove = __devexit_p(twl6040_codec_remove),
1230 };
1231
1232 static int __init twl6040_codec_init(void)
1233 {
1234 return platform_driver_register(&twl6040_codec_driver);
1235 }
1236 module_init(twl6040_codec_init);
1237
1238 static void __exit twl6040_codec_exit(void)
1239 {
1240 platform_driver_unregister(&twl6040_codec_driver);
1241 }
1242 module_exit(twl6040_codec_exit);
1243
1244 MODULE_DESCRIPTION("ASoC TWL6040 codec driver");
1245 MODULE_AUTHOR("Misael Lopez Cruz");
1246 MODULE_LICENSE("GPL");
Tomato firmware and modifications.