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13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/delay.h>
18#include <linux/pm.h>
19#include <linux/i2c.h>
20#include <linux/platform_device.h>
21#include <linux/slab.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/initval.h>
27#include <sound/tlv.h>
28
29#include "wm8974.h"
30
31static const u16 wm8974_reg[WM8974_CACHEREGNUM] = {
32 0x0000, 0x0000, 0x0000, 0x0000,
33 0x0050, 0x0000, 0x0140, 0x0000,
34 0x0000, 0x0000, 0x0000, 0x00ff,
35 0x0000, 0x0000, 0x0100, 0x00ff,
36 0x0000, 0x0000, 0x012c, 0x002c,
37 0x002c, 0x002c, 0x002c, 0x0000,
38 0x0032, 0x0000, 0x0000, 0x0000,
39 0x0000, 0x0000, 0x0000, 0x0000,
40 0x0038, 0x000b, 0x0032, 0x0000,
41 0x0008, 0x000c, 0x0093, 0x00e9,
42 0x0000, 0x0000, 0x0000, 0x0000,
43 0x0003, 0x0010, 0x0000, 0x0000,
44 0x0000, 0x0002, 0x0000, 0x0000,
45 0x0000, 0x0000, 0x0039, 0x0000,
46 0x0000,
47};
48
49#define WM8974_POWER1_BIASEN 0x08
50#define WM8974_POWER1_BUFIOEN 0x04
51
52struct wm8974_priv {
53 enum snd_soc_control_type control_type;
54};
55
56#define wm8974_reset(c) snd_soc_write(c, WM8974_RESET, 0)
57
58static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
59static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
60static const char *wm8974_eqmode[] = {"Capture", "Playback" };
61static const char *wm8974_bw[] = {"Narrow", "Wide" };
62static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" };
63static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" };
64static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" };
65static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" };
66static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" };
67static const char *wm8974_alc[] = {"ALC", "Limiter" };
68
69static const struct soc_enum wm8974_enum[] = {
70 SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding),
71 SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding),
72 SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp),
73 SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode),
74
75 SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1),
76 SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw),
77 SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2),
78 SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw),
79
80 SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3),
81 SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw),
82 SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4),
83 SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw),
84
85 SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5),
86 SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc),
87};
88
89static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" };
90
91static const struct soc_enum wm8974_auxmode =
92 SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text);
93
94static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
95static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
96static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
97static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
98
99static const struct snd_kcontrol_new wm8974_snd_controls[] = {
100
101SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0),
102
103SOC_ENUM("DAC Companding", wm8974_enum[1]),
104SOC_ENUM("ADC Companding", wm8974_enum[0]),
105
106SOC_ENUM("Playback De-emphasis", wm8974_enum[2]),
107SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0),
108
109SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv),
110
111SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0),
112SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0),
113SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0),
114
115SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv),
116
117SOC_ENUM("Equaliser Function", wm8974_enum[3]),
118SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]),
119SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv),
120
121SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]),
122SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]),
123SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv),
124
125SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]),
126SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]),
127SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv),
128
129SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]),
130SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]),
131SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv),
132
133SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]),
134SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]),
135SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv),
136
137SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0),
138SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0),
139SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0),
140
141SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0),
142SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0),
143
144SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0),
145SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0),
146SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0),
147
148SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0),
149SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0),
150SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0),
151
152SOC_ENUM("ALC Capture Mode", wm8974_enum[13]),
153SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0),
154SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0),
155
156SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0),
157SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0),
158
159SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0),
160SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv),
161
162SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0),
163SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1),
164SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv),
165
166SOC_ENUM("Aux Mode", wm8974_auxmode),
167
168SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0),
169SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1),
170
171
172SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0),
173SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0),
174};
175
176
177static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = {
178SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0),
179SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0),
180SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 0),
181};
182
183
184static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = {
185SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0),
186SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0),
187SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0),
188};
189
190
191static const struct snd_kcontrol_new wm8974_boost_mixer[] = {
192SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0),
193};
194
195
196static const struct snd_kcontrol_new wm8974_inpga[] = {
197SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0),
198SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0),
199SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0),
200};
201
202
203static const struct snd_kcontrol_new wm8974_aux_boost_controls =
204SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0);
205
206
207static const struct snd_kcontrol_new wm8974_mic_boost_controls =
208SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0);
209
210static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
211SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
212 &wm8974_speaker_mixer_controls[0],
213 ARRAY_SIZE(wm8974_speaker_mixer_controls)),
214SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
215 &wm8974_mono_mixer_controls[0],
216 ARRAY_SIZE(wm8974_mono_mixer_controls)),
217SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
218SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0),
219SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
220SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
221SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
222SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
223
224SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga,
225 ARRAY_SIZE(wm8974_inpga)),
226SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0,
227 wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)),
228
229SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0),
230
231SND_SOC_DAPM_INPUT("MICN"),
232SND_SOC_DAPM_INPUT("MICP"),
233SND_SOC_DAPM_INPUT("AUX"),
234SND_SOC_DAPM_OUTPUT("MONOOUT"),
235SND_SOC_DAPM_OUTPUT("SPKOUTP"),
236SND_SOC_DAPM_OUTPUT("SPKOUTN"),
237};
238
239static const struct snd_soc_dapm_route audio_map[] = {
240
241 {"Mono Mixer", "PCM Playback Switch", "DAC"},
242 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
243 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
244
245
246 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
247 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
248 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
249
250
251 {"Mono Out", NULL, "Mono Mixer"},
252 {"MONOOUT", NULL, "Mono Out"},
253 {"SpkN Out", NULL, "Speaker Mixer"},
254 {"SpkP Out", NULL, "Speaker Mixer"},
255 {"SPKOUTN", NULL, "SpkN Out"},
256 {"SPKOUTP", NULL, "SpkP Out"},
257
258
259 {"ADC", NULL, "Boost Mixer"},
260 {"Boost Mixer", "Aux Switch", "Aux Input"},
261 {"Boost Mixer", NULL, "Input PGA"},
262 {"Boost Mixer", NULL, "MICP"},
263
264
265 {"Input PGA", "Aux Switch", "Aux Input"},
266 {"Input PGA", "MicN Switch", "MICN"},
267 {"Input PGA", "MicP Switch", "MICP"},
268
269
270 {"Aux Input", NULL, "AUX"},
271};
272
273static int wm8974_add_widgets(struct snd_soc_codec *codec)
274{
275 struct snd_soc_dapm_context *dapm = &codec->dapm;
276
277 snd_soc_dapm_new_controls(dapm, wm8974_dapm_widgets,
278 ARRAY_SIZE(wm8974_dapm_widgets));
279 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
280
281 return 0;
282}
283
284struct pll_ {
285 unsigned int pre_div:1;
286 unsigned int n:4;
287 unsigned int k;
288};
289
290
291
292#define FIXED_PLL_SIZE ((1 << 24) * 10)
293
294static void pll_factors(struct pll_ *pll_div,
295 unsigned int target, unsigned int source)
296{
297 unsigned long long Kpart;
298 unsigned int K, Ndiv, Nmod;
299
300
301 target *= 4;
302
303 Ndiv = target / source;
304 if (Ndiv < 6) {
305 source /= 2;
306 pll_div->pre_div = 1;
307 Ndiv = target / source;
308 } else
309 pll_div->pre_div = 0;
310
311 if ((Ndiv < 6) || (Ndiv > 12))
312 printk(KERN_WARNING
313 "WM8974 N value %u outwith recommended range!\n",
314 Ndiv);
315
316 pll_div->n = Ndiv;
317 Nmod = target % source;
318 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
319
320 do_div(Kpart, source);
321
322 K = Kpart & 0xFFFFFFFF;
323
324
325 if ((K % 10) >= 5)
326 K += 5;
327
328
329 K /= 10;
330
331 pll_div->k = K;
332}
333
334static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
335 int source, unsigned int freq_in, unsigned int freq_out)
336{
337 struct snd_soc_codec *codec = codec_dai->codec;
338 struct pll_ pll_div;
339 u16 reg;
340
341 if (freq_in == 0 || freq_out == 0) {
342
343 reg = snd_soc_read(codec, WM8974_CLOCK);
344 snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff);
345
346
347 reg = snd_soc_read(codec, WM8974_POWER1);
348 snd_soc_write(codec, WM8974_POWER1, reg & 0x1df);
349 return 0;
350 }
351
352 pll_factors(&pll_div, freq_out, freq_in);
353
354 snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
355 snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18);
356 snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
357 snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff);
358 reg = snd_soc_read(codec, WM8974_POWER1);
359 snd_soc_write(codec, WM8974_POWER1, reg | 0x020);
360
361
362 reg = snd_soc_read(codec, WM8974_CLOCK);
363 snd_soc_write(codec, WM8974_CLOCK, reg | 0x100);
364
365 return 0;
366}
367
368
369
370
371static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
372 int div_id, int div)
373{
374 struct snd_soc_codec *codec = codec_dai->codec;
375 u16 reg;
376
377 switch (div_id) {
378 case WM8974_OPCLKDIV:
379 reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf;
380 snd_soc_write(codec, WM8974_GPIO, reg | div);
381 break;
382 case WM8974_MCLKDIV:
383 reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f;
384 snd_soc_write(codec, WM8974_CLOCK, reg | div);
385 break;
386 case WM8974_BCLKDIV:
387 reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3;
388 snd_soc_write(codec, WM8974_CLOCK, reg | div);
389 break;
390 default:
391 return -EINVAL;
392 }
393
394 return 0;
395}
396
397static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
398 unsigned int fmt)
399{
400 struct snd_soc_codec *codec = codec_dai->codec;
401 u16 iface = 0;
402 u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe;
403
404
405 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
406 case SND_SOC_DAIFMT_CBM_CFM:
407 clk |= 0x0001;
408 break;
409 case SND_SOC_DAIFMT_CBS_CFS:
410 break;
411 default:
412 return -EINVAL;
413 }
414
415
416 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
417 case SND_SOC_DAIFMT_I2S:
418 iface |= 0x0010;
419 break;
420 case SND_SOC_DAIFMT_RIGHT_J:
421 break;
422 case SND_SOC_DAIFMT_LEFT_J:
423 iface |= 0x0008;
424 break;
425 case SND_SOC_DAIFMT_DSP_A:
426 iface |= 0x00018;
427 break;
428 default:
429 return -EINVAL;
430 }
431
432
433 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
434 case SND_SOC_DAIFMT_NB_NF:
435 break;
436 case SND_SOC_DAIFMT_IB_IF:
437 iface |= 0x0180;
438 break;
439 case SND_SOC_DAIFMT_IB_NF:
440 iface |= 0x0100;
441 break;
442 case SND_SOC_DAIFMT_NB_IF:
443 iface |= 0x0080;
444 break;
445 default:
446 return -EINVAL;
447 }
448
449 snd_soc_write(codec, WM8974_IFACE, iface);
450 snd_soc_write(codec, WM8974_CLOCK, clk);
451 return 0;
452}
453
454static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
455 struct snd_pcm_hw_params *params,
456 struct snd_soc_dai *dai)
457{
458 struct snd_soc_codec *codec = dai->codec;
459 u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f;
460 u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1;
461
462
463 switch (params_format(params)) {
464 case SNDRV_PCM_FORMAT_S16_LE:
465 break;
466 case SNDRV_PCM_FORMAT_S20_3LE:
467 iface |= 0x0020;
468 break;
469 case SNDRV_PCM_FORMAT_S24_LE:
470 iface |= 0x0040;
471 break;
472 case SNDRV_PCM_FORMAT_S32_LE:
473 iface |= 0x0060;
474 break;
475 }
476
477
478 switch (params_rate(params)) {
479 case 8000:
480 adn |= 0x5 << 1;
481 break;
482 case 11025:
483 adn |= 0x4 << 1;
484 break;
485 case 16000:
486 adn |= 0x3 << 1;
487 break;
488 case 22050:
489 adn |= 0x2 << 1;
490 break;
491 case 32000:
492 adn |= 0x1 << 1;
493 break;
494 case 44100:
495 case 48000:
496 break;
497 }
498
499 snd_soc_write(codec, WM8974_IFACE, iface);
500 snd_soc_write(codec, WM8974_ADD, adn);
501 return 0;
502}
503
504static int wm8974_mute(struct snd_soc_dai *dai, int mute)
505{
506 struct snd_soc_codec *codec = dai->codec;
507 u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf;
508
509 if (mute)
510 snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40);
511 else
512 snd_soc_write(codec, WM8974_DAC, mute_reg);
513 return 0;
514}
515
516
517static int wm8974_set_bias_level(struct snd_soc_codec *codec,
518 enum snd_soc_bias_level level)
519{
520 u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3;
521
522 switch (level) {
523 case SND_SOC_BIAS_ON:
524 case SND_SOC_BIAS_PREPARE:
525 power1 |= 0x1;
526 snd_soc_write(codec, WM8974_POWER1, power1);
527 break;
528
529 case SND_SOC_BIAS_STANDBY:
530 power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
531
532 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
533
534 snd_soc_write(codec, WM8974_POWER1, power1 | 0x3);
535 mdelay(100);
536 }
537
538 power1 |= 0x2;
539 snd_soc_write(codec, WM8974_POWER1, power1);
540 break;
541
542 case SND_SOC_BIAS_OFF:
543 snd_soc_write(codec, WM8974_POWER1, 0);
544 snd_soc_write(codec, WM8974_POWER2, 0);
545 snd_soc_write(codec, WM8974_POWER3, 0);
546 break;
547 }
548
549 codec->dapm.bias_level = level;
550 return 0;
551}
552
553#define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
554
555#define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
556 SNDRV_PCM_FMTBIT_S24_LE)
557
558static struct snd_soc_dai_ops wm8974_ops = {
559 .hw_params = wm8974_pcm_hw_params,
560 .digital_mute = wm8974_mute,
561 .set_fmt = wm8974_set_dai_fmt,
562 .set_clkdiv = wm8974_set_dai_clkdiv,
563 .set_pll = wm8974_set_dai_pll,
564};
565
566static struct snd_soc_dai_driver wm8974_dai = {
567 .name = "wm8974-hifi",
568 .playback = {
569 .stream_name = "Playback",
570 .channels_min = 1,
571 .channels_max = 2,
572 .rates = WM8974_RATES,
573 .formats = WM8974_FORMATS,},
574 .capture = {
575 .stream_name = "Capture",
576 .channels_min = 1,
577 .channels_max = 2,
578 .rates = WM8974_RATES,
579 .formats = WM8974_FORMATS,},
580 .ops = &wm8974_ops,
581 .symmetric_rates = 1,
582};
583
584static int wm8974_suspend(struct snd_soc_codec *codec, pm_message_t state)
585{
586 wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
587 return 0;
588}
589
590static int wm8974_resume(struct snd_soc_codec *codec)
591{
592 int i;
593 u8 data[2];
594 u16 *cache = codec->reg_cache;
595
596
597 for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) {
598 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
599 data[1] = cache[i] & 0x00ff;
600 codec->hw_write(codec->control_data, data, 2);
601 }
602 wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
603
604 return 0;
605}
606
607static int wm8974_probe(struct snd_soc_codec *codec)
608{
609 int ret = 0;
610
611 ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C);
612 if (ret < 0) {
613 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
614 return ret;
615 }
616
617 ret = wm8974_reset(codec);
618 if (ret < 0) {
619 dev_err(codec->dev, "Failed to issue reset\n");
620 return ret;
621 }
622
623 wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
624 snd_soc_add_controls(codec, wm8974_snd_controls,
625 ARRAY_SIZE(wm8974_snd_controls));
626 wm8974_add_widgets(codec);
627
628 return ret;
629}
630
631
632static int wm8974_remove(struct snd_soc_codec *codec)
633{
634 wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
635 return 0;
636}
637
638static struct snd_soc_codec_driver soc_codec_dev_wm8974 = {
639 .probe = wm8974_probe,
640 .remove = wm8974_remove,
641 .suspend = wm8974_suspend,
642 .resume = wm8974_resume,
643 .set_bias_level = wm8974_set_bias_level,
644 .reg_cache_size = ARRAY_SIZE(wm8974_reg),
645 .reg_word_size = sizeof(u16),
646 .reg_cache_default = wm8974_reg,
647};
648
649#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
650static __devinit int wm8974_i2c_probe(struct i2c_client *i2c,
651 const struct i2c_device_id *id)
652{
653 struct wm8974_priv *wm8974;
654 int ret;
655
656 wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL);
657 if (wm8974 == NULL)
658 return -ENOMEM;
659
660 i2c_set_clientdata(i2c, wm8974);
661
662 ret = snd_soc_register_codec(&i2c->dev,
663 &soc_codec_dev_wm8974, &wm8974_dai, 1);
664 if (ret < 0)
665 kfree(wm8974);
666 return ret;
667}
668
669static __devexit int wm8974_i2c_remove(struct i2c_client *client)
670{
671 snd_soc_unregister_codec(&client->dev);
672 kfree(i2c_get_clientdata(client));
673 return 0;
674}
675
676static const struct i2c_device_id wm8974_i2c_id[] = {
677 { "wm8974", 0 },
678 { }
679};
680MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
681
682static struct i2c_driver wm8974_i2c_driver = {
683 .driver = {
684 .name = "wm8974-codec",
685 .owner = THIS_MODULE,
686 },
687 .probe = wm8974_i2c_probe,
688 .remove = __devexit_p(wm8974_i2c_remove),
689 .id_table = wm8974_i2c_id,
690};
691#endif
692
693static int __init wm8974_modinit(void)
694{
695 int ret = 0;
696#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
697 ret = i2c_add_driver(&wm8974_i2c_driver);
698 if (ret != 0) {
699 printk(KERN_ERR "Failed to register wm8974 I2C driver: %d\n",
700 ret);
701 }
702#endif
703 return ret;
704}
705module_init(wm8974_modinit);
706
707static void __exit wm8974_exit(void)
708{
709#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
710 i2c_del_driver(&wm8974_i2c_driver);
711#endif
712}
713module_exit(wm8974_exit);
714
715MODULE_DESCRIPTION("ASoC WM8974 driver");
716MODULE_AUTHOR("Liam Girdwood");
717MODULE_LICENSE("GPL");
718
