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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/slab.h>
21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/pcm_params.h>
24#include <sound/soc.h>
25#include <sound/initval.h>
26#include <sound/tlv.h>
27
28#include "wm8974.h"
29
30static const u16 wm8974_reg[WM8974_CACHEREGNUM] = {
31 0x0000, 0x0000, 0x0000, 0x0000,
32 0x0050, 0x0000, 0x0140, 0x0000,
33 0x0000, 0x0000, 0x0000, 0x00ff,
34 0x0000, 0x0000, 0x0100, 0x00ff,
35 0x0000, 0x0000, 0x012c, 0x002c,
36 0x002c, 0x002c, 0x002c, 0x0000,
37 0x0032, 0x0000, 0x0000, 0x0000,
38 0x0000, 0x0000, 0x0000, 0x0000,
39 0x0038, 0x000b, 0x0032, 0x0000,
40 0x0008, 0x000c, 0x0093, 0x00e9,
41 0x0000, 0x0000, 0x0000, 0x0000,
42 0x0003, 0x0010, 0x0000, 0x0000,
43 0x0000, 0x0002, 0x0000, 0x0000,
44 0x0000, 0x0000, 0x0039, 0x0000,
45 0x0000,
46};
47
48#define WM8974_POWER1_BIASEN 0x08
49#define WM8974_POWER1_BUFIOEN 0x04
50
51#define wm8974_reset(c) snd_soc_write(c, WM8974_RESET, 0)
52
53static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" };
54static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" };
55static const char *wm8974_eqmode[] = {"Capture", "Playback" };
56static const char *wm8974_bw[] = {"Narrow", "Wide" };
57static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" };
58static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" };
59static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" };
60static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" };
61static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" };
62static const char *wm8974_alc[] = {"ALC", "Limiter" };
63
64static const struct soc_enum wm8974_enum[] = {
65 SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding),
66 SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding),
67 SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp),
68 SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode),
69
70 SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1),
71 SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw),
72 SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2),
73 SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw),
74
75 SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3),
76 SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw),
77 SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4),
78 SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw),
79
80 SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5),
81 SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc),
82};
83
84static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" };
85
86static const struct soc_enum wm8974_auxmode =
87 SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text);
88
89static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
90static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
91static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
92static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
93
94static const struct snd_kcontrol_new wm8974_snd_controls[] = {
95
96SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0),
97
98SOC_ENUM("DAC Companding", wm8974_enum[1]),
99SOC_ENUM("ADC Companding", wm8974_enum[0]),
100
101SOC_ENUM("Playback De-emphasis", wm8974_enum[2]),
102SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0),
103
104SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv),
105
106SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0),
107SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0),
108SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0),
109
110SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv),
111
112SOC_ENUM("Equaliser Function", wm8974_enum[3]),
113SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]),
114SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv),
115
116SOC_ENUM("Equaliser EQ2 Bandwidth", wm8974_enum[5]),
117SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]),
118SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv),
119
120SOC_ENUM("Equaliser EQ3 Bandwidth", wm8974_enum[7]),
121SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]),
122SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv),
123
124SOC_ENUM("Equaliser EQ4 Bandwidth", wm8974_enum[9]),
125SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]),
126SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv),
127
128SOC_ENUM("Equaliser EQ5 Bandwidth", wm8974_enum[11]),
129SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]),
130SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv),
131
132SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0),
133SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0),
134SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0),
135
136SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0),
137SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0),
138
139SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0),
140SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0),
141SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0),
142
143SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0),
144SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0),
145SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0),
146
147SOC_ENUM("ALC Capture Mode", wm8974_enum[13]),
148SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0),
149SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0),
150
151SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0),
152SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0),
153
154SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0),
155SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv),
156
157SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0),
158SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1),
159SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv),
160
161SOC_ENUM("Aux Mode", wm8974_auxmode),
162
163SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0),
164SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1),
165
166
167SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0),
168SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0),
169};
170
171
172static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = {
173SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0),
174SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0),
175SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 0),
176};
177
178
179static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = {
180SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0),
181SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0),
182SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0),
183};
184
185
186static const struct snd_kcontrol_new wm8974_boost_mixer[] = {
187SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0),
188};
189
190
191static const struct snd_kcontrol_new wm8974_inpga[] = {
192SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0),
193SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0),
194SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0),
195};
196
197
198static const struct snd_kcontrol_new wm8974_aux_boost_controls =
199SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0);
200
201
202static const struct snd_kcontrol_new wm8974_mic_boost_controls =
203SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0);
204
205static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = {
206SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0,
207 &wm8974_speaker_mixer_controls[0],
208 ARRAY_SIZE(wm8974_speaker_mixer_controls)),
209SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0,
210 &wm8974_mono_mixer_controls[0],
211 ARRAY_SIZE(wm8974_mono_mixer_controls)),
212SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0),
213SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0),
214SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0),
215SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0),
216SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0),
217SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0),
218
219SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga,
220 ARRAY_SIZE(wm8974_inpga)),
221SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0,
222 wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)),
223
224SND_SOC_DAPM_SUPPLY("Mic Bias", WM8974_POWER1, 4, 0, NULL, 0),
225
226SND_SOC_DAPM_INPUT("MICN"),
227SND_SOC_DAPM_INPUT("MICP"),
228SND_SOC_DAPM_INPUT("AUX"),
229SND_SOC_DAPM_OUTPUT("MONOOUT"),
230SND_SOC_DAPM_OUTPUT("SPKOUTP"),
231SND_SOC_DAPM_OUTPUT("SPKOUTN"),
232};
233
234static const struct snd_soc_dapm_route wm8974_dapm_routes[] = {
235
236 {"Mono Mixer", "PCM Playback Switch", "DAC"},
237 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
238 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
239
240
241 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
242 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
243 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
244
245
246 {"Mono Out", NULL, "Mono Mixer"},
247 {"MONOOUT", NULL, "Mono Out"},
248 {"SpkN Out", NULL, "Speaker Mixer"},
249 {"SpkP Out", NULL, "Speaker Mixer"},
250 {"SPKOUTN", NULL, "SpkN Out"},
251 {"SPKOUTP", NULL, "SpkP Out"},
252
253
254 {"ADC", NULL, "Boost Mixer"},
255 {"Boost Mixer", "Aux Switch", "Aux Input"},
256 {"Boost Mixer", NULL, "Input PGA"},
257 {"Boost Mixer", NULL, "MICP"},
258
259
260 {"Input PGA", "Aux Switch", "Aux Input"},
261 {"Input PGA", "MicN Switch", "MICN"},
262 {"Input PGA", "MicP Switch", "MICP"},
263
264
265 {"Aux Input", NULL, "AUX"},
266};
267
268struct pll_ {
269 unsigned int pre_div:1;
270 unsigned int n:4;
271 unsigned int k;
272};
273
274
275
276#define FIXED_PLL_SIZE ((1 << 24) * 10)
277
278static void pll_factors(struct pll_ *pll_div,
279 unsigned int target, unsigned int source)
280{
281 unsigned long long Kpart;
282 unsigned int K, Ndiv, Nmod;
283
284
285 target *= 4;
286
287 Ndiv = target / source;
288 if (Ndiv < 6) {
289 source /= 2;
290 pll_div->pre_div = 1;
291 Ndiv = target / source;
292 } else
293 pll_div->pre_div = 0;
294
295 if ((Ndiv < 6) || (Ndiv > 12))
296 printk(KERN_WARNING
297 "WM8974 N value %u outwith recommended range!\n",
298 Ndiv);
299
300 pll_div->n = Ndiv;
301 Nmod = target % source;
302 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
303
304 do_div(Kpart, source);
305
306 K = Kpart & 0xFFFFFFFF;
307
308
309 if ((K % 10) >= 5)
310 K += 5;
311
312
313 K /= 10;
314
315 pll_div->k = K;
316}
317
318static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
319 int source, unsigned int freq_in, unsigned int freq_out)
320{
321 struct snd_soc_codec *codec = codec_dai->codec;
322 struct pll_ pll_div;
323 u16 reg;
324
325 if (freq_in == 0 || freq_out == 0) {
326
327 reg = snd_soc_read(codec, WM8974_CLOCK);
328 snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff);
329
330
331 reg = snd_soc_read(codec, WM8974_POWER1);
332 snd_soc_write(codec, WM8974_POWER1, reg & 0x1df);
333 return 0;
334 }
335
336 pll_factors(&pll_div, freq_out, freq_in);
337
338 snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n);
339 snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18);
340 snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff);
341 snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff);
342 reg = snd_soc_read(codec, WM8974_POWER1);
343 snd_soc_write(codec, WM8974_POWER1, reg | 0x020);
344
345
346 reg = snd_soc_read(codec, WM8974_CLOCK);
347 snd_soc_write(codec, WM8974_CLOCK, reg | 0x100);
348
349 return 0;
350}
351
352
353
354
355static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
356 int div_id, int div)
357{
358 struct snd_soc_codec *codec = codec_dai->codec;
359 u16 reg;
360
361 switch (div_id) {
362 case WM8974_OPCLKDIV:
363 reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf;
364 snd_soc_write(codec, WM8974_GPIO, reg | div);
365 break;
366 case WM8974_MCLKDIV:
367 reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f;
368 snd_soc_write(codec, WM8974_CLOCK, reg | div);
369 break;
370 case WM8974_BCLKDIV:
371 reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3;
372 snd_soc_write(codec, WM8974_CLOCK, reg | div);
373 break;
374 default:
375 return -EINVAL;
376 }
377
378 return 0;
379}
380
381static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai,
382 unsigned int fmt)
383{
384 struct snd_soc_codec *codec = codec_dai->codec;
385 u16 iface = 0;
386 u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe;
387
388
389 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
390 case SND_SOC_DAIFMT_CBM_CFM:
391 clk |= 0x0001;
392 break;
393 case SND_SOC_DAIFMT_CBS_CFS:
394 break;
395 default:
396 return -EINVAL;
397 }
398
399
400 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
401 case SND_SOC_DAIFMT_I2S:
402 iface |= 0x0010;
403 break;
404 case SND_SOC_DAIFMT_RIGHT_J:
405 break;
406 case SND_SOC_DAIFMT_LEFT_J:
407 iface |= 0x0008;
408 break;
409 case SND_SOC_DAIFMT_DSP_A:
410 iface |= 0x00018;
411 break;
412 default:
413 return -EINVAL;
414 }
415
416
417 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
418 case SND_SOC_DAIFMT_NB_NF:
419 break;
420 case SND_SOC_DAIFMT_IB_IF:
421 iface |= 0x0180;
422 break;
423 case SND_SOC_DAIFMT_IB_NF:
424 iface |= 0x0100;
425 break;
426 case SND_SOC_DAIFMT_NB_IF:
427 iface |= 0x0080;
428 break;
429 default:
430 return -EINVAL;
431 }
432
433 snd_soc_write(codec, WM8974_IFACE, iface);
434 snd_soc_write(codec, WM8974_CLOCK, clk);
435 return 0;
436}
437
438static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream,
439 struct snd_pcm_hw_params *params,
440 struct snd_soc_dai *dai)
441{
442 struct snd_soc_codec *codec = dai->codec;
443 u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f;
444 u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1;
445
446
447 switch (params_format(params)) {
448 case SNDRV_PCM_FORMAT_S16_LE:
449 break;
450 case SNDRV_PCM_FORMAT_S20_3LE:
451 iface |= 0x0020;
452 break;
453 case SNDRV_PCM_FORMAT_S24_LE:
454 iface |= 0x0040;
455 break;
456 case SNDRV_PCM_FORMAT_S32_LE:
457 iface |= 0x0060;
458 break;
459 }
460
461
462 switch (params_rate(params)) {
463 case 8000:
464 adn |= 0x5 << 1;
465 break;
466 case 11025:
467 adn |= 0x4 << 1;
468 break;
469 case 16000:
470 adn |= 0x3 << 1;
471 break;
472 case 22050:
473 adn |= 0x2 << 1;
474 break;
475 case 32000:
476 adn |= 0x1 << 1;
477 break;
478 case 44100:
479 case 48000:
480 break;
481 }
482
483 snd_soc_write(codec, WM8974_IFACE, iface);
484 snd_soc_write(codec, WM8974_ADD, adn);
485 return 0;
486}
487
488static int wm8974_mute(struct snd_soc_dai *dai, int mute)
489{
490 struct snd_soc_codec *codec = dai->codec;
491 u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf;
492
493 if (mute)
494 snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40);
495 else
496 snd_soc_write(codec, WM8974_DAC, mute_reg);
497 return 0;
498}
499
500
501static int wm8974_set_bias_level(struct snd_soc_codec *codec,
502 enum snd_soc_bias_level level)
503{
504 u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3;
505
506 switch (level) {
507 case SND_SOC_BIAS_ON:
508 case SND_SOC_BIAS_PREPARE:
509 power1 |= 0x1;
510 snd_soc_write(codec, WM8974_POWER1, power1);
511 break;
512
513 case SND_SOC_BIAS_STANDBY:
514 power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN;
515
516 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
517 snd_soc_cache_sync(codec);
518
519
520 snd_soc_write(codec, WM8974_POWER1, power1 | 0x3);
521 mdelay(100);
522 }
523
524 power1 |= 0x2;
525 snd_soc_write(codec, WM8974_POWER1, power1);
526 break;
527
528 case SND_SOC_BIAS_OFF:
529 snd_soc_write(codec, WM8974_POWER1, 0);
530 snd_soc_write(codec, WM8974_POWER2, 0);
531 snd_soc_write(codec, WM8974_POWER3, 0);
532 break;
533 }
534
535 codec->dapm.bias_level = level;
536 return 0;
537}
538
539#define WM8974_RATES (SNDRV_PCM_RATE_8000_48000)
540
541#define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
542 SNDRV_PCM_FMTBIT_S24_LE)
543
544static const struct snd_soc_dai_ops wm8974_ops = {
545 .hw_params = wm8974_pcm_hw_params,
546 .digital_mute = wm8974_mute,
547 .set_fmt = wm8974_set_dai_fmt,
548 .set_clkdiv = wm8974_set_dai_clkdiv,
549 .set_pll = wm8974_set_dai_pll,
550};
551
552static struct snd_soc_dai_driver wm8974_dai = {
553 .name = "wm8974-hifi",
554 .playback = {
555 .stream_name = "Playback",
556 .channels_min = 1,
557 .channels_max = 2,
558 .rates = WM8974_RATES,
559 .formats = WM8974_FORMATS,},
560 .capture = {
561 .stream_name = "Capture",
562 .channels_min = 1,
563 .channels_max = 2,
564 .rates = WM8974_RATES,
565 .formats = WM8974_FORMATS,},
566 .ops = &wm8974_ops,
567 .symmetric_rates = 1,
568};
569
570static int wm8974_suspend(struct snd_soc_codec *codec)
571{
572 wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
573 return 0;
574}
575
576static int wm8974_resume(struct snd_soc_codec *codec)
577{
578 wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
579 return 0;
580}
581
582static int wm8974_probe(struct snd_soc_codec *codec)
583{
584 int ret = 0;
585
586 ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C);
587 if (ret < 0) {
588 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
589 return ret;
590 }
591
592 ret = wm8974_reset(codec);
593 if (ret < 0) {
594 dev_err(codec->dev, "Failed to issue reset\n");
595 return ret;
596 }
597
598 wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
599
600 return ret;
601}
602
603
604static int wm8974_remove(struct snd_soc_codec *codec)
605{
606 wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF);
607 return 0;
608}
609
610static struct snd_soc_codec_driver soc_codec_dev_wm8974 = {
611 .probe = wm8974_probe,
612 .remove = wm8974_remove,
613 .suspend = wm8974_suspend,
614 .resume = wm8974_resume,
615 .set_bias_level = wm8974_set_bias_level,
616 .reg_cache_size = ARRAY_SIZE(wm8974_reg),
617 .reg_word_size = sizeof(u16),
618 .reg_cache_default = wm8974_reg,
619
620 .controls = wm8974_snd_controls,
621 .num_controls = ARRAY_SIZE(wm8974_snd_controls),
622 .dapm_widgets = wm8974_dapm_widgets,
623 .num_dapm_widgets = ARRAY_SIZE(wm8974_dapm_widgets),
624 .dapm_routes = wm8974_dapm_routes,
625 .num_dapm_routes = ARRAY_SIZE(wm8974_dapm_routes),
626};
627
628static int wm8974_i2c_probe(struct i2c_client *i2c,
629 const struct i2c_device_id *id)
630{
631 int ret;
632
633 ret = snd_soc_register_codec(&i2c->dev,
634 &soc_codec_dev_wm8974, &wm8974_dai, 1);
635
636 return ret;
637}
638
639static int wm8974_i2c_remove(struct i2c_client *client)
640{
641 snd_soc_unregister_codec(&client->dev);
642
643 return 0;
644}
645
646static const struct i2c_device_id wm8974_i2c_id[] = {
647 { "wm8974", 0 },
648 { }
649};
650MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id);
651
652static struct i2c_driver wm8974_i2c_driver = {
653 .driver = {
654 .name = "wm8974",
655 .owner = THIS_MODULE,
656 },
657 .probe = wm8974_i2c_probe,
658 .remove = wm8974_i2c_remove,
659 .id_table = wm8974_i2c_id,
660};
661
662module_i2c_driver(wm8974_i2c_driver);
663
664MODULE_DESCRIPTION("ASoC WM8974 driver");
665MODULE_AUTHOR("Liam Girdwood");
666MODULE_LICENSE("GPL");
667
