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1 | /* | |
2 | * wm8731.c -- WM8731 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2005 Openedhand Ltd. | |
5 | * Copyright 2006-12 Wolfson Microelectronics, plc | |
6 | * | |
7 | * Author: Richard Purdie <richard@openedhand.com> | |
8 | * | |
9 | * Based on wm8753.c by Liam Girdwood | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/moduleparam.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/pm.h> | |
21 | #include <linux/i2c.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/regmap.h> | |
24 | #include <linux/regulator/consumer.h> | |
25 | #include <linux/spi/spi.h> | |
26 | #include <linux/of_device.h> | |
27 | #include <linux/mutex.h> | |
28 | #include <linux/clk.h> | |
29 | #include <sound/core.h> | |
30 | #include <sound/pcm.h> | |
31 | #include <sound/pcm_params.h> | |
32 | #include <sound/soc.h> | |
33 | #include <sound/initval.h> | |
34 | #include <sound/tlv.h> | |
35 | ||
36 | #include "wm8731.h" | |
37 | ||
38 | #define WM8731_NUM_SUPPLIES 4 | |
39 | static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = { | |
40 | "AVDD", | |
41 | "HPVDD", | |
42 | "DCVDD", | |
43 | "DBVDD", | |
44 | }; | |
45 | ||
46 | /* codec private data */ | |
47 | struct wm8731_priv { | |
48 | struct regmap *regmap; | |
49 | struct clk *mclk; | |
50 | struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES]; | |
51 | const struct snd_pcm_hw_constraint_list *constraints; | |
52 | unsigned int sysclk; | |
53 | int sysclk_type; | |
54 | int playback_fs; | |
55 | bool deemph; | |
56 | ||
57 | struct mutex lock; | |
58 | }; | |
59 | ||
60 | ||
61 | /* | |
62 | * wm8731 register cache | |
63 | */ | |
64 | static const struct reg_default wm8731_reg_defaults[] = { | |
65 | { 0, 0x0097 }, | |
66 | { 1, 0x0097 }, | |
67 | { 2, 0x0079 }, | |
68 | { 3, 0x0079 }, | |
69 | { 4, 0x000a }, | |
70 | { 5, 0x0008 }, | |
71 | { 6, 0x009f }, | |
72 | { 7, 0x000a }, | |
73 | { 8, 0x0000 }, | |
74 | { 9, 0x0000 }, | |
75 | }; | |
76 | ||
77 | static bool wm8731_volatile(struct device *dev, unsigned int reg) | |
78 | { | |
79 | return reg == WM8731_RESET; | |
80 | } | |
81 | ||
82 | #define wm8731_reset(m) regmap_write(m, WM8731_RESET, 0) | |
83 | ||
84 | static const char *wm8731_input_select[] = {"Line In", "Mic"}; | |
85 | ||
86 | static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum, | |
87 | WM8731_APANA, 2, wm8731_input_select); | |
88 | ||
89 | static int wm8731_deemph[] = { 0, 32000, 44100, 48000 }; | |
90 | ||
91 | static int wm8731_set_deemph(struct snd_soc_codec *codec) | |
92 | { | |
93 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); | |
94 | int val, i, best; | |
95 | ||
96 | /* If we're using deemphasis select the nearest available sample | |
97 | * rate. | |
98 | */ | |
99 | if (wm8731->deemph) { | |
100 | best = 1; | |
101 | for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) { | |
102 | if (abs(wm8731_deemph[i] - wm8731->playback_fs) < | |
103 | abs(wm8731_deemph[best] - wm8731->playback_fs)) | |
104 | best = i; | |
105 | } | |
106 | ||
107 | val = best << 1; | |
108 | } else { | |
109 | best = 0; | |
110 | val = 0; | |
111 | } | |
112 | ||
113 | dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n", | |
114 | best, wm8731_deemph[best]); | |
115 | ||
116 | return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val); | |
117 | } | |
118 | ||
119 | static int wm8731_get_deemph(struct snd_kcontrol *kcontrol, | |
120 | struct snd_ctl_elem_value *ucontrol) | |
121 | { | |
122 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); | |
123 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); | |
124 | ||
125 | ucontrol->value.integer.value[0] = wm8731->deemph; | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | static int wm8731_put_deemph(struct snd_kcontrol *kcontrol, | |
131 | struct snd_ctl_elem_value *ucontrol) | |
132 | { | |
133 | struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); | |
134 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); | |
135 | unsigned int deemph = ucontrol->value.integer.value[0]; | |
136 | int ret = 0; | |
137 | ||
138 | if (deemph > 1) | |
139 | return -EINVAL; | |
140 | ||
141 | mutex_lock(&wm8731->lock); | |
142 | if (wm8731->deemph != deemph) { | |
143 | wm8731->deemph = deemph; | |
144 | ||
145 | wm8731_set_deemph(codec); | |
146 | ||
147 | ret = 1; | |
148 | } | |
149 | mutex_unlock(&wm8731->lock); | |
150 | ||
151 | return ret; | |
152 | } | |
153 | ||
154 | static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0); | |
155 | static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0); | |
156 | static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); | |
157 | static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0); | |
158 | ||
159 | static const struct snd_kcontrol_new wm8731_snd_controls[] = { | |
160 | ||
161 | SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V, | |
162 | 0, 127, 0, out_tlv), | |
163 | SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V, | |
164 | 7, 1, 0), | |
165 | ||
166 | SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0, | |
167 | in_tlv), | |
168 | SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), | |
169 | ||
170 | SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv), | |
171 | SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1), | |
172 | ||
173 | SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1, | |
174 | sidetone_tlv), | |
175 | ||
176 | SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), | |
177 | SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), | |
178 | ||
179 | SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, | |
180 | wm8731_get_deemph, wm8731_put_deemph), | |
181 | }; | |
182 | ||
183 | /* Output Mixer */ | |
184 | static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = { | |
185 | SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0), | |
186 | SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0), | |
187 | SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), | |
188 | }; | |
189 | ||
190 | /* Input mux */ | |
191 | static const struct snd_kcontrol_new wm8731_input_mux_controls = | |
192 | SOC_DAPM_ENUM("Input Select", wm8731_insel_enum); | |
193 | ||
194 | static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { | |
195 | SND_SOC_DAPM_SUPPLY("ACTIVE",WM8731_ACTIVE, 0, 0, NULL, 0), | |
196 | SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0), | |
197 | SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1, | |
198 | &wm8731_output_mixer_controls[0], | |
199 | ARRAY_SIZE(wm8731_output_mixer_controls)), | |
200 | SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1), | |
201 | SND_SOC_DAPM_OUTPUT("LOUT"), | |
202 | SND_SOC_DAPM_OUTPUT("LHPOUT"), | |
203 | SND_SOC_DAPM_OUTPUT("ROUT"), | |
204 | SND_SOC_DAPM_OUTPUT("RHPOUT"), | |
205 | SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1), | |
206 | SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls), | |
207 | SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0), | |
208 | SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1), | |
209 | SND_SOC_DAPM_INPUT("MICIN"), | |
210 | SND_SOC_DAPM_INPUT("RLINEIN"), | |
211 | SND_SOC_DAPM_INPUT("LLINEIN"), | |
212 | }; | |
213 | ||
214 | static int wm8731_check_osc(struct snd_soc_dapm_widget *source, | |
215 | struct snd_soc_dapm_widget *sink) | |
216 | { | |
217 | struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm); | |
218 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); | |
219 | ||
220 | return wm8731->sysclk_type == WM8731_SYSCLK_XTAL; | |
221 | } | |
222 | ||
223 | static const struct snd_soc_dapm_route wm8731_intercon[] = { | |
224 | {"DAC", NULL, "OSC", wm8731_check_osc}, | |
225 | {"ADC", NULL, "OSC", wm8731_check_osc}, | |
226 | {"DAC", NULL, "ACTIVE"}, | |
227 | {"ADC", NULL, "ACTIVE"}, | |
228 | ||
229 | /* output mixer */ | |
230 | {"Output Mixer", "Line Bypass Switch", "Line Input"}, | |
231 | {"Output Mixer", "HiFi Playback Switch", "DAC"}, | |
232 | {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, | |
233 | ||
234 | /* outputs */ | |
235 | {"RHPOUT", NULL, "Output Mixer"}, | |
236 | {"ROUT", NULL, "Output Mixer"}, | |
237 | {"LHPOUT", NULL, "Output Mixer"}, | |
238 | {"LOUT", NULL, "Output Mixer"}, | |
239 | ||
240 | /* input mux */ | |
241 | {"Input Mux", "Line In", "Line Input"}, | |
242 | {"Input Mux", "Mic", "Mic Bias"}, | |
243 | {"ADC", NULL, "Input Mux"}, | |
244 | ||
245 | /* inputs */ | |
246 | {"Line Input", NULL, "LLINEIN"}, | |
247 | {"Line Input", NULL, "RLINEIN"}, | |
248 | {"Mic Bias", NULL, "MICIN"}, | |
249 | }; | |
250 | ||
251 | struct _coeff_div { | |
252 | u32 mclk; | |
253 | u32 rate; | |
254 | u16 fs; | |
255 | u8 sr:4; | |
256 | u8 bosr:1; | |
257 | u8 usb:1; | |
258 | }; | |
259 | ||
260 | /* codec mclk clock divider coefficients */ | |
261 | static const struct _coeff_div coeff_div[] = { | |
262 | /* 48k */ | |
263 | {12288000, 48000, 256, 0x0, 0x0, 0x0}, | |
264 | {18432000, 48000, 384, 0x0, 0x1, 0x0}, | |
265 | {12000000, 48000, 250, 0x0, 0x0, 0x1}, | |
266 | ||
267 | /* 32k */ | |
268 | {12288000, 32000, 384, 0x6, 0x0, 0x0}, | |
269 | {18432000, 32000, 576, 0x6, 0x1, 0x0}, | |
270 | {12000000, 32000, 375, 0x6, 0x0, 0x1}, | |
271 | ||
272 | /* 8k */ | |
273 | {12288000, 8000, 1536, 0x3, 0x0, 0x0}, | |
274 | {18432000, 8000, 2304, 0x3, 0x1, 0x0}, | |
275 | {11289600, 8000, 1408, 0xb, 0x0, 0x0}, | |
276 | {16934400, 8000, 2112, 0xb, 0x1, 0x0}, | |
277 | {12000000, 8000, 1500, 0x3, 0x0, 0x1}, | |
278 | ||
279 | /* 96k */ | |
280 | {12288000, 96000, 128, 0x7, 0x0, 0x0}, | |
281 | {18432000, 96000, 192, 0x7, 0x1, 0x0}, | |
282 | {12000000, 96000, 125, 0x7, 0x0, 0x1}, | |
283 | ||
284 | /* 44.1k */ | |
285 | {11289600, 44100, 256, 0x8, 0x0, 0x0}, | |
286 | {16934400, 44100, 384, 0x8, 0x1, 0x0}, | |
287 | {12000000, 44100, 272, 0x8, 0x1, 0x1}, | |
288 | ||
289 | /* 88.2k */ | |
290 | {11289600, 88200, 128, 0xf, 0x0, 0x0}, | |
291 | {16934400, 88200, 192, 0xf, 0x1, 0x0}, | |
292 | {12000000, 88200, 136, 0xf, 0x1, 0x1}, | |
293 | }; | |
294 | ||
295 | /* rates constraints */ | |
296 | static const unsigned int wm8731_rates_12000000[] = { | |
297 | 8000, 32000, 44100, 48000, 96000, 88200, | |
298 | }; | |
299 | ||
300 | static const unsigned int wm8731_rates_12288000_18432000[] = { | |
301 | 8000, 32000, 48000, 96000, | |
302 | }; | |
303 | ||
304 | static const unsigned int wm8731_rates_11289600_16934400[] = { | |
305 | 8000, 44100, 88200, | |
306 | }; | |
307 | ||
308 | static const struct snd_pcm_hw_constraint_list wm8731_constraints_12000000 = { | |
309 | .list = wm8731_rates_12000000, | |
310 | .count = ARRAY_SIZE(wm8731_rates_12000000), | |
311 | }; | |
312 | ||
313 | static const | |
314 | struct snd_pcm_hw_constraint_list wm8731_constraints_12288000_18432000 = { | |
315 | .list = wm8731_rates_12288000_18432000, | |
316 | .count = ARRAY_SIZE(wm8731_rates_12288000_18432000), | |
317 | }; | |
318 | ||
319 | static const | |
320 | struct snd_pcm_hw_constraint_list wm8731_constraints_11289600_16934400 = { | |
321 | .list = wm8731_rates_11289600_16934400, | |
322 | .count = ARRAY_SIZE(wm8731_rates_11289600_16934400), | |
323 | }; | |
324 | ||
325 | static inline int get_coeff(int mclk, int rate) | |
326 | { | |
327 | int i; | |
328 | ||
329 | for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { | |
330 | if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) | |
331 | return i; | |
332 | } | |
333 | return 0; | |
334 | } | |
335 | ||
336 | static int wm8731_hw_params(struct snd_pcm_substream *substream, | |
337 | struct snd_pcm_hw_params *params, | |
338 | struct snd_soc_dai *dai) | |
339 | { | |
340 | struct snd_soc_codec *codec = dai->codec; | |
341 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); | |
342 | u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3; | |
343 | int i = get_coeff(wm8731->sysclk, params_rate(params)); | |
344 | u16 srate = (coeff_div[i].sr << 2) | | |
345 | (coeff_div[i].bosr << 1) | coeff_div[i].usb; | |
346 | ||
347 | wm8731->playback_fs = params_rate(params); | |
348 | ||
349 | snd_soc_write(codec, WM8731_SRATE, srate); | |
350 | ||
351 | /* bit size */ | |
352 | switch (params_width(params)) { | |
353 | case 16: | |
354 | break; | |
355 | case 20: | |
356 | iface |= 0x0004; | |
357 | break; | |
358 | case 24: | |
359 | iface |= 0x0008; | |
360 | break; | |
361 | case 32: | |
362 | iface |= 0x000c; | |
363 | break; | |
364 | } | |
365 | ||
366 | wm8731_set_deemph(codec); | |
367 | ||
368 | snd_soc_write(codec, WM8731_IFACE, iface); | |
369 | return 0; | |
370 | } | |
371 | ||
372 | static int wm8731_mute(struct snd_soc_dai *dai, int mute) | |
373 | { | |
374 | struct snd_soc_codec *codec = dai->codec; | |
375 | u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7; | |
376 | ||
377 | if (mute) | |
378 | snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8); | |
379 | else | |
380 | snd_soc_write(codec, WM8731_APDIGI, mute_reg); | |
381 | return 0; | |
382 | } | |
383 | ||
384 | static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai, | |
385 | int clk_id, unsigned int freq, int dir) | |
386 | { | |
387 | struct snd_soc_codec *codec = codec_dai->codec; | |
388 | struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec); | |
389 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); | |
390 | ||
391 | switch (clk_id) { | |
392 | case WM8731_SYSCLK_XTAL: | |
393 | case WM8731_SYSCLK_MCLK: | |
394 | if (wm8731->mclk && clk_set_rate(wm8731->mclk, freq)) | |
395 | return -EINVAL; | |
396 | wm8731->sysclk_type = clk_id; | |
397 | break; | |
398 | default: | |
399 | return -EINVAL; | |
400 | } | |
401 | ||
402 | switch (freq) { | |
403 | case 0: | |
404 | wm8731->constraints = NULL; | |
405 | break; | |
406 | case 12000000: | |
407 | wm8731->constraints = &wm8731_constraints_12000000; | |
408 | break; | |
409 | case 12288000: | |
410 | case 18432000: | |
411 | wm8731->constraints = &wm8731_constraints_12288000_18432000; | |
412 | break; | |
413 | case 16934400: | |
414 | case 11289600: | |
415 | wm8731->constraints = &wm8731_constraints_11289600_16934400; | |
416 | break; | |
417 | default: | |
418 | return -EINVAL; | |
419 | } | |
420 | ||
421 | wm8731->sysclk = freq; | |
422 | ||
423 | snd_soc_dapm_sync(dapm); | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | ||
429 | static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
430 | unsigned int fmt) | |
431 | { | |
432 | struct snd_soc_codec *codec = codec_dai->codec; | |
433 | u16 iface = 0; | |
434 | ||
435 | /* set master/slave audio interface */ | |
436 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
437 | case SND_SOC_DAIFMT_CBM_CFM: | |
438 | iface |= 0x0040; | |
439 | break; | |
440 | case SND_SOC_DAIFMT_CBS_CFS: | |
441 | break; | |
442 | default: | |
443 | return -EINVAL; | |
444 | } | |
445 | ||
446 | /* interface format */ | |
447 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
448 | case SND_SOC_DAIFMT_I2S: | |
449 | iface |= 0x0002; | |
450 | break; | |
451 | case SND_SOC_DAIFMT_RIGHT_J: | |
452 | break; | |
453 | case SND_SOC_DAIFMT_LEFT_J: | |
454 | iface |= 0x0001; | |
455 | break; | |
456 | case SND_SOC_DAIFMT_DSP_A: | |
457 | iface |= 0x0013; | |
458 | break; | |
459 | case SND_SOC_DAIFMT_DSP_B: | |
460 | iface |= 0x0003; | |
461 | break; | |
462 | default: | |
463 | return -EINVAL; | |
464 | } | |
465 | ||
466 | /* clock inversion */ | |
467 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
468 | case SND_SOC_DAIFMT_NB_NF: | |
469 | break; | |
470 | case SND_SOC_DAIFMT_IB_IF: | |
471 | iface |= 0x0090; | |
472 | break; | |
473 | case SND_SOC_DAIFMT_IB_NF: | |
474 | iface |= 0x0080; | |
475 | break; | |
476 | case SND_SOC_DAIFMT_NB_IF: | |
477 | iface |= 0x0010; | |
478 | break; | |
479 | default: | |
480 | return -EINVAL; | |
481 | } | |
482 | ||
483 | /* set iface */ | |
484 | snd_soc_write(codec, WM8731_IFACE, iface); | |
485 | return 0; | |
486 | } | |
487 | ||
488 | static int wm8731_set_bias_level(struct snd_soc_codec *codec, | |
489 | enum snd_soc_bias_level level) | |
490 | { | |
491 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); | |
492 | int ret; | |
493 | u16 reg; | |
494 | ||
495 | switch (level) { | |
496 | case SND_SOC_BIAS_ON: | |
497 | if (wm8731->mclk) { | |
498 | ret = clk_prepare_enable(wm8731->mclk); | |
499 | if (ret) | |
500 | return ret; | |
501 | } | |
502 | break; | |
503 | case SND_SOC_BIAS_PREPARE: | |
504 | break; | |
505 | case SND_SOC_BIAS_STANDBY: | |
506 | if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) { | |
507 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), | |
508 | wm8731->supplies); | |
509 | if (ret != 0) | |
510 | return ret; | |
511 | ||
512 | regcache_sync(wm8731->regmap); | |
513 | } | |
514 | ||
515 | /* Clear PWROFF, gate CLKOUT, everything else as-is */ | |
516 | reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f; | |
517 | snd_soc_write(codec, WM8731_PWR, reg | 0x0040); | |
518 | break; | |
519 | case SND_SOC_BIAS_OFF: | |
520 | if (wm8731->mclk) | |
521 | clk_disable_unprepare(wm8731->mclk); | |
522 | snd_soc_write(codec, WM8731_PWR, 0xffff); | |
523 | regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), | |
524 | wm8731->supplies); | |
525 | regcache_mark_dirty(wm8731->regmap); | |
526 | break; | |
527 | } | |
528 | return 0; | |
529 | } | |
530 | ||
531 | static int wm8731_startup(struct snd_pcm_substream *substream, | |
532 | struct snd_soc_dai *dai) | |
533 | { | |
534 | struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(dai->codec); | |
535 | ||
536 | if (wm8731->constraints) | |
537 | snd_pcm_hw_constraint_list(substream->runtime, 0, | |
538 | SNDRV_PCM_HW_PARAM_RATE, | |
539 | wm8731->constraints); | |
540 | ||
541 | return 0; | |
542 | } | |
543 | ||
544 | #define WM8731_RATES SNDRV_PCM_RATE_8000_96000 | |
545 | ||
546 | #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
547 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
548 | ||
549 | static const struct snd_soc_dai_ops wm8731_dai_ops = { | |
550 | .startup = wm8731_startup, | |
551 | .hw_params = wm8731_hw_params, | |
552 | .digital_mute = wm8731_mute, | |
553 | .set_sysclk = wm8731_set_dai_sysclk, | |
554 | .set_fmt = wm8731_set_dai_fmt, | |
555 | }; | |
556 | ||
557 | static struct snd_soc_dai_driver wm8731_dai = { | |
558 | .name = "wm8731-hifi", | |
559 | .playback = { | |
560 | .stream_name = "Playback", | |
561 | .channels_min = 1, | |
562 | .channels_max = 2, | |
563 | .rates = WM8731_RATES, | |
564 | .formats = WM8731_FORMATS,}, | |
565 | .capture = { | |
566 | .stream_name = "Capture", | |
567 | .channels_min = 1, | |
568 | .channels_max = 2, | |
569 | .rates = WM8731_RATES, | |
570 | .formats = WM8731_FORMATS,}, | |
571 | .ops = &wm8731_dai_ops, | |
572 | .symmetric_rates = 1, | |
573 | }; | |
574 | ||
575 | static int wm8731_request_supplies(struct device *dev, | |
576 | struct wm8731_priv *wm8731) | |
577 | { | |
578 | int ret = 0, i; | |
579 | ||
580 | for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++) | |
581 | wm8731->supplies[i].supply = wm8731_supply_names[i]; | |
582 | ||
583 | ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(wm8731->supplies), | |
584 | wm8731->supplies); | |
585 | if (ret != 0) { | |
586 | dev_err(dev, "Failed to request supplies: %d\n", ret); | |
587 | return ret; | |
588 | } | |
589 | ||
590 | ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), | |
591 | wm8731->supplies); | |
592 | if (ret != 0) { | |
593 | dev_err(dev, "Failed to enable supplies: %d\n", ret); | |
594 | return ret; | |
595 | } | |
596 | ||
597 | return 0; | |
598 | } | |
599 | ||
600 | static int wm8731_hw_init(struct device *dev, struct wm8731_priv *wm8731) | |
601 | { | |
602 | int ret = 0; | |
603 | ||
604 | ret = wm8731_reset(wm8731->regmap); | |
605 | if (ret < 0) { | |
606 | dev_err(dev, "Failed to issue reset: %d\n", ret); | |
607 | goto err_regulator_enable; | |
608 | } | |
609 | ||
610 | /* Clear POWEROFF, keep everything else disabled */ | |
611 | regmap_write(wm8731->regmap, WM8731_PWR, 0x7f); | |
612 | ||
613 | /* Latch the update bits */ | |
614 | regmap_update_bits(wm8731->regmap, WM8731_LOUT1V, 0x100, 0); | |
615 | regmap_update_bits(wm8731->regmap, WM8731_ROUT1V, 0x100, 0); | |
616 | regmap_update_bits(wm8731->regmap, WM8731_LINVOL, 0x100, 0); | |
617 | regmap_update_bits(wm8731->regmap, WM8731_RINVOL, 0x100, 0); | |
618 | ||
619 | /* Disable bypass path by default */ | |
620 | regmap_update_bits(wm8731->regmap, WM8731_APANA, 0x8, 0); | |
621 | ||
622 | regcache_mark_dirty(wm8731->regmap); | |
623 | ||
624 | err_regulator_enable: | |
625 | /* Regulators will be enabled by bias management */ | |
626 | regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); | |
627 | ||
628 | return ret; | |
629 | } | |
630 | ||
631 | static struct snd_soc_codec_driver soc_codec_dev_wm8731 = { | |
632 | .set_bias_level = wm8731_set_bias_level, | |
633 | .suspend_bias_off = true, | |
634 | ||
635 | .dapm_widgets = wm8731_dapm_widgets, | |
636 | .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets), | |
637 | .dapm_routes = wm8731_intercon, | |
638 | .num_dapm_routes = ARRAY_SIZE(wm8731_intercon), | |
639 | .controls = wm8731_snd_controls, | |
640 | .num_controls = ARRAY_SIZE(wm8731_snd_controls), | |
641 | }; | |
642 | ||
643 | static const struct of_device_id wm8731_of_match[] = { | |
644 | { .compatible = "wlf,wm8731", }, | |
645 | { } | |
646 | }; | |
647 | ||
648 | MODULE_DEVICE_TABLE(of, wm8731_of_match); | |
649 | ||
650 | static const struct regmap_config wm8731_regmap = { | |
651 | .reg_bits = 7, | |
652 | .val_bits = 9, | |
653 | ||
654 | .max_register = WM8731_RESET, | |
655 | .volatile_reg = wm8731_volatile, | |
656 | ||
657 | .cache_type = REGCACHE_RBTREE, | |
658 | .reg_defaults = wm8731_reg_defaults, | |
659 | .num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults), | |
660 | }; | |
661 | ||
662 | #if defined(CONFIG_SPI_MASTER) | |
663 | static int wm8731_spi_probe(struct spi_device *spi) | |
664 | { | |
665 | struct wm8731_priv *wm8731; | |
666 | int ret; | |
667 | ||
668 | wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL); | |
669 | if (wm8731 == NULL) | |
670 | return -ENOMEM; | |
671 | ||
672 | wm8731->mclk = devm_clk_get(&spi->dev, "mclk"); | |
673 | if (IS_ERR(wm8731->mclk)) { | |
674 | ret = PTR_ERR(wm8731->mclk); | |
675 | if (ret == -ENOENT) { | |
676 | wm8731->mclk = NULL; | |
677 | dev_warn(&spi->dev, "Assuming static MCLK\n"); | |
678 | } else { | |
679 | dev_err(&spi->dev, "Failed to get MCLK: %d\n", | |
680 | ret); | |
681 | return ret; | |
682 | } | |
683 | } | |
684 | ||
685 | mutex_init(&wm8731->lock); | |
686 | ||
687 | spi_set_drvdata(spi, wm8731); | |
688 | ||
689 | ret = wm8731_request_supplies(&spi->dev, wm8731); | |
690 | if (ret != 0) | |
691 | return ret; | |
692 | ||
693 | wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap); | |
694 | if (IS_ERR(wm8731->regmap)) { | |
695 | ret = PTR_ERR(wm8731->regmap); | |
696 | dev_err(&spi->dev, "Failed to allocate register map: %d\n", | |
697 | ret); | |
698 | return ret; | |
699 | } | |
700 | ||
701 | ret = wm8731_hw_init(&spi->dev, wm8731); | |
702 | if (ret != 0) | |
703 | return ret; | |
704 | ||
705 | ret = snd_soc_register_codec(&spi->dev, | |
706 | &soc_codec_dev_wm8731, &wm8731_dai, 1); | |
707 | if (ret != 0) { | |
708 | dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret); | |
709 | return ret; | |
710 | } | |
711 | ||
712 | return 0; | |
713 | } | |
714 | ||
715 | static int wm8731_spi_remove(struct spi_device *spi) | |
716 | { | |
717 | snd_soc_unregister_codec(&spi->dev); | |
718 | return 0; | |
719 | } | |
720 | ||
721 | static struct spi_driver wm8731_spi_driver = { | |
722 | .driver = { | |
723 | .name = "wm8731", | |
724 | .of_match_table = wm8731_of_match, | |
725 | }, | |
726 | .probe = wm8731_spi_probe, | |
727 | .remove = wm8731_spi_remove, | |
728 | }; | |
729 | #endif /* CONFIG_SPI_MASTER */ | |
730 | ||
731 | #if IS_ENABLED(CONFIG_I2C) | |
732 | static int wm8731_i2c_probe(struct i2c_client *i2c, | |
733 | const struct i2c_device_id *id) | |
734 | { | |
735 | struct wm8731_priv *wm8731; | |
736 | int ret; | |
737 | ||
738 | wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv), | |
739 | GFP_KERNEL); | |
740 | if (wm8731 == NULL) | |
741 | return -ENOMEM; | |
742 | ||
743 | wm8731->mclk = devm_clk_get(&i2c->dev, "mclk"); | |
744 | if (IS_ERR(wm8731->mclk)) { | |
745 | ret = PTR_ERR(wm8731->mclk); | |
746 | if (ret == -ENOENT) { | |
747 | wm8731->mclk = NULL; | |
748 | dev_warn(&i2c->dev, "Assuming static MCLK\n"); | |
749 | } else { | |
750 | dev_err(&i2c->dev, "Failed to get MCLK: %d\n", | |
751 | ret); | |
752 | return ret; | |
753 | } | |
754 | } | |
755 | ||
756 | mutex_init(&wm8731->lock); | |
757 | ||
758 | i2c_set_clientdata(i2c, wm8731); | |
759 | ||
760 | ret = wm8731_request_supplies(&i2c->dev, wm8731); | |
761 | if (ret != 0) | |
762 | return ret; | |
763 | ||
764 | wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap); | |
765 | if (IS_ERR(wm8731->regmap)) { | |
766 | ret = PTR_ERR(wm8731->regmap); | |
767 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", | |
768 | ret); | |
769 | return ret; | |
770 | } | |
771 | ||
772 | ret = wm8731_hw_init(&i2c->dev, wm8731); | |
773 | if (ret != 0) | |
774 | return ret; | |
775 | ||
776 | ret = snd_soc_register_codec(&i2c->dev, | |
777 | &soc_codec_dev_wm8731, &wm8731_dai, 1); | |
778 | if (ret != 0) { | |
779 | dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); | |
780 | return ret; | |
781 | } | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | static int wm8731_i2c_remove(struct i2c_client *client) | |
787 | { | |
788 | snd_soc_unregister_codec(&client->dev); | |
789 | return 0; | |
790 | } | |
791 | ||
792 | static const struct i2c_device_id wm8731_i2c_id[] = { | |
793 | { "wm8731", 0 }, | |
794 | { } | |
795 | }; | |
796 | MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); | |
797 | ||
798 | static struct i2c_driver wm8731_i2c_driver = { | |
799 | .driver = { | |
800 | .name = "wm8731", | |
801 | .of_match_table = wm8731_of_match, | |
802 | }, | |
803 | .probe = wm8731_i2c_probe, | |
804 | .remove = wm8731_i2c_remove, | |
805 | .id_table = wm8731_i2c_id, | |
806 | }; | |
807 | #endif | |
808 | ||
809 | static int __init wm8731_modinit(void) | |
810 | { | |
811 | int ret = 0; | |
812 | #if IS_ENABLED(CONFIG_I2C) | |
813 | ret = i2c_add_driver(&wm8731_i2c_driver); | |
814 | if (ret != 0) { | |
815 | printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n", | |
816 | ret); | |
817 | } | |
818 | #endif | |
819 | #if defined(CONFIG_SPI_MASTER) | |
820 | ret = spi_register_driver(&wm8731_spi_driver); | |
821 | if (ret != 0) { | |
822 | printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n", | |
823 | ret); | |
824 | } | |
825 | #endif | |
826 | return ret; | |
827 | } | |
828 | module_init(wm8731_modinit); | |
829 | ||
830 | static void __exit wm8731_exit(void) | |
831 | { | |
832 | #if IS_ENABLED(CONFIG_I2C) | |
833 | i2c_del_driver(&wm8731_i2c_driver); | |
834 | #endif | |
835 | #if defined(CONFIG_SPI_MASTER) | |
836 | spi_unregister_driver(&wm8731_spi_driver); | |
837 | #endif | |
838 | } | |
839 | module_exit(wm8731_exit); | |
840 | ||
841 | MODULE_DESCRIPTION("ASoC WM8731 driver"); | |
842 | MODULE_AUTHOR("Richard Purdie"); | |
843 | MODULE_LICENSE("GPL"); |