2 * wm8988.c -- WM8988 ALSA SoC audio driver
4 * Copyright 2009 Wolfson Microelectronics plc
5 * Copyright 2005 Openedhand Ltd.
7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
19 #include <linux/i2c.h>
20 #include <linux/spi/spi.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/tlv.h>
26 #include <sound/soc.h>
27 #include <sound/initval.h>
32 * wm8988 register cache
33 * We can't read the WM8988 register space when we
34 * are using 2 wire for device control, so we cache them instead.
36 static const struct reg_default wm8988_reg_defaults[] = {
72 static bool wm8988_writeable(struct device *dev, unsigned int reg)
115 /* codec private data */
117 struct regmap *regmap;
119 const struct snd_pcm_hw_constraint_list *sysclk_constraints;
122 #define wm8988_reset(c) snd_soc_write(c, WM8988_RESET, 0)
128 static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"};
129 static SOC_ENUM_SINGLE_DECL(bass_boost,
130 WM8988_BASS, 7, bass_boost_txt);
132 static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" };
133 static SOC_ENUM_SINGLE_DECL(bass_filter,
134 WM8988_BASS, 6, bass_filter_txt);
136 static const char *treble_txt[] = {"8kHz", "4kHz"};
137 static SOC_ENUM_SINGLE_DECL(treble,
138 WM8988_TREBLE, 6, treble_txt);
140 static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"};
141 static SOC_ENUM_SINGLE_DECL(stereo_3d_lc,
142 WM8988_3D, 5, stereo_3d_lc_txt);
144 static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"};
145 static SOC_ENUM_SINGLE_DECL(stereo_3d_uc,
146 WM8988_3D, 6, stereo_3d_uc_txt);
148 static const char *stereo_3d_func_txt[] = {"Capture", "Playback"};
149 static SOC_ENUM_SINGLE_DECL(stereo_3d_func,
150 WM8988_3D, 7, stereo_3d_func_txt);
152 static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"};
153 static SOC_ENUM_SINGLE_DECL(alc_func,
154 WM8988_ALC1, 7, alc_func_txt);
156 static const char *ng_type_txt[] = {"Constant PGA Gain",
158 static SOC_ENUM_SINGLE_DECL(ng_type,
159 WM8988_NGATE, 1, ng_type_txt);
161 static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"};
162 static SOC_ENUM_SINGLE_DECL(deemph,
163 WM8988_ADCDAC, 1, deemph_txt);
165 static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert",
167 static SOC_ENUM_SINGLE_DECL(adcpol,
168 WM8988_ADCDAC, 5, adcpol_txt);
170 static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0);
171 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
172 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
173 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
174 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
176 static const struct snd_kcontrol_new wm8988_snd_controls[] = {
178 SOC_ENUM("Bass Boost", bass_boost),
179 SOC_ENUM("Bass Filter", bass_filter),
180 SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1),
182 SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0),
183 SOC_ENUM("Treble Cut-off", treble),
185 SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0),
186 SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0),
187 SOC_ENUM("3D Lower Cut-off", stereo_3d_lc),
188 SOC_ENUM("3D Upper Cut-off", stereo_3d_uc),
189 SOC_ENUM("3D Mode", stereo_3d_func),
191 SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0),
192 SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0),
193 SOC_ENUM("ALC Capture Function", alc_func),
194 SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0),
195 SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0),
196 SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0),
197 SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0),
198 SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0),
199 SOC_ENUM("ALC Capture NG Type", ng_type),
200 SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0),
202 SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0),
204 SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC,
206 SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL,
208 SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0),
209 SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1),
211 SOC_ENUM("Playback De-emphasis", deemph),
213 SOC_ENUM("Capture Polarity", adcpol),
214 SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0),
215 SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0),
217 SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv),
219 SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1,
221 SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1,
223 SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1,
225 SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1,
228 SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V,
229 WM8988_ROUT1V, 7, 1, 0),
230 SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V,
233 SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V,
234 WM8988_ROUT2V, 7, 1, 0),
235 SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V,
244 static int wm8988_lrc_control(struct snd_soc_dapm_widget *w,
245 struct snd_kcontrol *kcontrol, int event)
247 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
248 u16 adctl2 = snd_soc_read(codec, WM8988_ADCTL2);
250 /* Use the DAC to gate LRC if active, otherwise use ADC */
251 if (snd_soc_read(codec, WM8988_PWR2) & 0x180)
256 return snd_soc_write(codec, WM8988_ADCTL2, adctl2);
259 static const char *wm8988_line_texts[] = {
260 "Line 1", "Line 2", "PGA", "Differential"};
262 static const unsigned int wm8988_line_values[] = {
265 static const struct soc_enum wm8988_lline_enum =
266 SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7,
267 ARRAY_SIZE(wm8988_line_texts),
270 static const struct snd_kcontrol_new wm8988_left_line_controls =
271 SOC_DAPM_ENUM("Route", wm8988_lline_enum);
273 static const struct soc_enum wm8988_rline_enum =
274 SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7,
275 ARRAY_SIZE(wm8988_line_texts),
278 static const struct snd_kcontrol_new wm8988_right_line_controls =
279 SOC_DAPM_ENUM("Route", wm8988_lline_enum);
282 static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = {
283 SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0),
284 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0),
285 SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0),
286 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0),
290 static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = {
291 SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0),
292 SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0),
293 SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0),
294 SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0),
297 static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"};
298 static const unsigned int wm8988_pga_val[] = { 0, 1, 3 };
301 static const struct soc_enum wm8988_lpga_enum =
302 SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3,
303 ARRAY_SIZE(wm8988_pga_sel),
306 static const struct snd_kcontrol_new wm8988_left_pga_controls =
307 SOC_DAPM_ENUM("Route", wm8988_lpga_enum);
310 static const struct soc_enum wm8988_rpga_enum =
311 SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3,
312 ARRAY_SIZE(wm8988_pga_sel),
315 static const struct snd_kcontrol_new wm8988_right_pga_controls =
316 SOC_DAPM_ENUM("Route", wm8988_rpga_enum);
318 /* Differential Mux */
319 static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"};
320 static SOC_ENUM_SINGLE_DECL(diffmux,
321 WM8988_ADCIN, 8, wm8988_diff_sel);
322 static const struct snd_kcontrol_new wm8988_diffmux_controls =
323 SOC_DAPM_ENUM("Route", diffmux);
326 static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)",
327 "Mono (Right)", "Digital Mono"};
328 static SOC_ENUM_SINGLE_DECL(monomux,
329 WM8988_ADCIN, 6, wm8988_mono_mux);
330 static const struct snd_kcontrol_new wm8988_monomux_controls =
331 SOC_DAPM_ENUM("Route", monomux);
333 static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = {
334 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8988_PWR1, 1, 0, NULL, 0),
336 SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
337 &wm8988_diffmux_controls),
338 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
339 &wm8988_monomux_controls),
340 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
341 &wm8988_monomux_controls),
343 SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0,
344 &wm8988_left_pga_controls),
345 SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0,
346 &wm8988_right_pga_controls),
348 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
349 &wm8988_left_line_controls),
350 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
351 &wm8988_right_line_controls),
353 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0),
354 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0),
356 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0),
357 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0),
359 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
360 &wm8988_left_mixer_controls[0],
361 ARRAY_SIZE(wm8988_left_mixer_controls)),
362 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
363 &wm8988_right_mixer_controls[0],
364 ARRAY_SIZE(wm8988_right_mixer_controls)),
366 SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0),
367 SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0),
368 SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0),
369 SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0),
371 SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control),
373 SND_SOC_DAPM_OUTPUT("LOUT1"),
374 SND_SOC_DAPM_OUTPUT("ROUT1"),
375 SND_SOC_DAPM_OUTPUT("LOUT2"),
376 SND_SOC_DAPM_OUTPUT("ROUT2"),
377 SND_SOC_DAPM_OUTPUT("VREF"),
379 SND_SOC_DAPM_INPUT("LINPUT1"),
380 SND_SOC_DAPM_INPUT("LINPUT2"),
381 SND_SOC_DAPM_INPUT("RINPUT1"),
382 SND_SOC_DAPM_INPUT("RINPUT2"),
385 static const struct snd_soc_dapm_route wm8988_dapm_routes[] = {
387 { "Left Line Mux", "Line 1", "LINPUT1" },
388 { "Left Line Mux", "Line 2", "LINPUT2" },
389 { "Left Line Mux", "PGA", "Left PGA Mux" },
390 { "Left Line Mux", "Differential", "Differential Mux" },
392 { "Right Line Mux", "Line 1", "RINPUT1" },
393 { "Right Line Mux", "Line 2", "RINPUT2" },
394 { "Right Line Mux", "PGA", "Right PGA Mux" },
395 { "Right Line Mux", "Differential", "Differential Mux" },
397 { "Left PGA Mux", "Line 1", "LINPUT1" },
398 { "Left PGA Mux", "Line 2", "LINPUT2" },
399 { "Left PGA Mux", "Differential", "Differential Mux" },
401 { "Right PGA Mux", "Line 1", "RINPUT1" },
402 { "Right PGA Mux", "Line 2", "RINPUT2" },
403 { "Right PGA Mux", "Differential", "Differential Mux" },
405 { "Differential Mux", "Line 1", "LINPUT1" },
406 { "Differential Mux", "Line 1", "RINPUT1" },
407 { "Differential Mux", "Line 2", "LINPUT2" },
408 { "Differential Mux", "Line 2", "RINPUT2" },
410 { "Left ADC Mux", "Stereo", "Left PGA Mux" },
411 { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
412 { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
414 { "Right ADC Mux", "Stereo", "Right PGA Mux" },
415 { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
416 { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
418 { "Left ADC", NULL, "Left ADC Mux" },
419 { "Right ADC", NULL, "Right ADC Mux" },
421 { "Left Line Mux", "Line 1", "LINPUT1" },
422 { "Left Line Mux", "Line 2", "LINPUT2" },
423 { "Left Line Mux", "PGA", "Left PGA Mux" },
424 { "Left Line Mux", "Differential", "Differential Mux" },
426 { "Right Line Mux", "Line 1", "RINPUT1" },
427 { "Right Line Mux", "Line 2", "RINPUT2" },
428 { "Right Line Mux", "PGA", "Right PGA Mux" },
429 { "Right Line Mux", "Differential", "Differential Mux" },
431 { "Left Mixer", "Playback Switch", "Left DAC" },
432 { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
433 { "Left Mixer", "Right Playback Switch", "Right DAC" },
434 { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
436 { "Right Mixer", "Left Playback Switch", "Left DAC" },
437 { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
438 { "Right Mixer", "Playback Switch", "Right DAC" },
439 { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
441 { "Left Out 1", NULL, "Left Mixer" },
442 { "LOUT1", NULL, "Left Out 1" },
443 { "Right Out 1", NULL, "Right Mixer" },
444 { "ROUT1", NULL, "Right Out 1" },
446 { "Left Out 2", NULL, "Left Mixer" },
447 { "LOUT2", NULL, "Left Out 2" },
448 { "Right Out 2", NULL, "Right Mixer" },
449 { "ROUT2", NULL, "Right Out 2" },
460 /* codec hifi mclk clock divider coefficients */
461 static const struct _coeff_div coeff_div[] = {
463 {12288000, 8000, 1536, 0x6, 0x0},
464 {11289600, 8000, 1408, 0x16, 0x0},
465 {18432000, 8000, 2304, 0x7, 0x0},
466 {16934400, 8000, 2112, 0x17, 0x0},
467 {12000000, 8000, 1500, 0x6, 0x1},
470 {11289600, 11025, 1024, 0x18, 0x0},
471 {16934400, 11025, 1536, 0x19, 0x0},
472 {12000000, 11025, 1088, 0x19, 0x1},
475 {12288000, 16000, 768, 0xa, 0x0},
476 {18432000, 16000, 1152, 0xb, 0x0},
477 {12000000, 16000, 750, 0xa, 0x1},
480 {11289600, 22050, 512, 0x1a, 0x0},
481 {16934400, 22050, 768, 0x1b, 0x0},
482 {12000000, 22050, 544, 0x1b, 0x1},
485 {12288000, 32000, 384, 0xc, 0x0},
486 {18432000, 32000, 576, 0xd, 0x0},
487 {12000000, 32000, 375, 0xa, 0x1},
490 {11289600, 44100, 256, 0x10, 0x0},
491 {16934400, 44100, 384, 0x11, 0x0},
492 {12000000, 44100, 272, 0x11, 0x1},
495 {12288000, 48000, 256, 0x0, 0x0},
496 {18432000, 48000, 384, 0x1, 0x0},
497 {12000000, 48000, 250, 0x0, 0x1},
500 {11289600, 88200, 128, 0x1e, 0x0},
501 {16934400, 88200, 192, 0x1f, 0x0},
502 {12000000, 88200, 136, 0x1f, 0x1},
505 {12288000, 96000, 128, 0xe, 0x0},
506 {18432000, 96000, 192, 0xf, 0x0},
507 {12000000, 96000, 125, 0xe, 0x1},
510 static inline int get_coeff(int mclk, int rate)
514 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
515 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
522 /* The set of rates we can generate from the above for each SYSCLK */
524 static const unsigned int rates_12288[] = {
525 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000,
528 static const struct snd_pcm_hw_constraint_list constraints_12288 = {
529 .count = ARRAY_SIZE(rates_12288),
533 static const unsigned int rates_112896[] = {
534 8000, 11025, 22050, 44100,
537 static const struct snd_pcm_hw_constraint_list constraints_112896 = {
538 .count = ARRAY_SIZE(rates_112896),
539 .list = rates_112896,
542 static const unsigned int rates_12[] = {
543 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000,
547 static const struct snd_pcm_hw_constraint_list constraints_12 = {
548 .count = ARRAY_SIZE(rates_12),
553 * Note that this should be called from init rather than from hw_params.
555 static int wm8988_set_dai_sysclk(struct snd_soc_dai *codec_dai,
556 int clk_id, unsigned int freq, int dir)
558 struct snd_soc_codec *codec = codec_dai->codec;
559 struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
566 wm8988->sysclk_constraints = &constraints_112896;
567 wm8988->sysclk = freq;
574 wm8988->sysclk_constraints = &constraints_12288;
575 wm8988->sysclk = freq;
580 wm8988->sysclk_constraints = &constraints_12;
581 wm8988->sysclk = freq;
587 static int wm8988_set_dai_fmt(struct snd_soc_dai *codec_dai,
590 struct snd_soc_codec *codec = codec_dai->codec;
593 /* set master/slave audio interface */
594 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
595 case SND_SOC_DAIFMT_CBM_CFM:
598 case SND_SOC_DAIFMT_CBS_CFS:
604 /* interface format */
605 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
606 case SND_SOC_DAIFMT_I2S:
609 case SND_SOC_DAIFMT_RIGHT_J:
611 case SND_SOC_DAIFMT_LEFT_J:
614 case SND_SOC_DAIFMT_DSP_A:
617 case SND_SOC_DAIFMT_DSP_B:
624 /* clock inversion */
625 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
626 case SND_SOC_DAIFMT_NB_NF:
628 case SND_SOC_DAIFMT_IB_IF:
631 case SND_SOC_DAIFMT_IB_NF:
634 case SND_SOC_DAIFMT_NB_IF:
641 snd_soc_write(codec, WM8988_IFACE, iface);
645 static int wm8988_pcm_startup(struct snd_pcm_substream *substream,
646 struct snd_soc_dai *dai)
648 struct snd_soc_codec *codec = dai->codec;
649 struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
651 /* The set of sample rates that can be supported depends on the
652 * MCLK supplied to the CODEC - enforce this.
654 if (!wm8988->sysclk) {
656 "No MCLK configured, call set_sysclk() on init\n");
660 snd_pcm_hw_constraint_list(substream->runtime, 0,
661 SNDRV_PCM_HW_PARAM_RATE,
662 wm8988->sysclk_constraints);
667 static int wm8988_pcm_hw_params(struct snd_pcm_substream *substream,
668 struct snd_pcm_hw_params *params,
669 struct snd_soc_dai *dai)
671 struct snd_soc_codec *codec = dai->codec;
672 struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
673 u16 iface = snd_soc_read(codec, WM8988_IFACE) & 0x1f3;
674 u16 srate = snd_soc_read(codec, WM8988_SRATE) & 0x180;
677 coeff = get_coeff(wm8988->sysclk, params_rate(params));
679 coeff = get_coeff(wm8988->sysclk / 2, params_rate(params));
684 "Unable to configure sample rate %dHz with %dHz MCLK\n",
685 params_rate(params), wm8988->sysclk);
690 switch (params_width(params)) {
704 /* set iface & srate */
705 snd_soc_write(codec, WM8988_IFACE, iface);
707 snd_soc_write(codec, WM8988_SRATE, srate |
708 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
713 static int wm8988_mute(struct snd_soc_dai *dai, int mute)
715 struct snd_soc_codec *codec = dai->codec;
716 u16 mute_reg = snd_soc_read(codec, WM8988_ADCDAC) & 0xfff7;
719 snd_soc_write(codec, WM8988_ADCDAC, mute_reg | 0x8);
721 snd_soc_write(codec, WM8988_ADCDAC, mute_reg);
725 static int wm8988_set_bias_level(struct snd_soc_codec *codec,
726 enum snd_soc_bias_level level)
728 struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec);
729 u16 pwr_reg = snd_soc_read(codec, WM8988_PWR1) & ~0x1c1;
732 case SND_SOC_BIAS_ON:
735 case SND_SOC_BIAS_PREPARE:
736 /* VREF, VMID=2x50k, digital enabled */
737 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x00c0);
740 case SND_SOC_BIAS_STANDBY:
741 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
742 regcache_sync(wm8988->regmap);
744 /* VREF, VMID=2x5k */
745 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x1c1);
751 /* VREF, VMID=2*500k, digital stopped */
752 snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x0141);
755 case SND_SOC_BIAS_OFF:
756 snd_soc_write(codec, WM8988_PWR1, 0x0000);
762 #define WM8988_RATES SNDRV_PCM_RATE_8000_96000
764 #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
765 SNDRV_PCM_FMTBIT_S24_LE)
767 static const struct snd_soc_dai_ops wm8988_ops = {
768 .startup = wm8988_pcm_startup,
769 .hw_params = wm8988_pcm_hw_params,
770 .set_fmt = wm8988_set_dai_fmt,
771 .set_sysclk = wm8988_set_dai_sysclk,
772 .digital_mute = wm8988_mute,
775 static struct snd_soc_dai_driver wm8988_dai = {
776 .name = "wm8988-hifi",
778 .stream_name = "Playback",
781 .rates = WM8988_RATES,
782 .formats = WM8988_FORMATS,
785 .stream_name = "Capture",
788 .rates = WM8988_RATES,
789 .formats = WM8988_FORMATS,
792 .symmetric_rates = 1,
795 static int wm8988_probe(struct snd_soc_codec *codec)
799 ret = wm8988_reset(codec);
801 dev_err(codec->dev, "Failed to issue reset\n");
805 /* set the update bits (we always update left then right) */
806 snd_soc_update_bits(codec, WM8988_RADC, 0x0100, 0x0100);
807 snd_soc_update_bits(codec, WM8988_RDAC, 0x0100, 0x0100);
808 snd_soc_update_bits(codec, WM8988_ROUT1V, 0x0100, 0x0100);
809 snd_soc_update_bits(codec, WM8988_ROUT2V, 0x0100, 0x0100);
810 snd_soc_update_bits(codec, WM8988_RINVOL, 0x0100, 0x0100);
815 static const struct snd_soc_codec_driver soc_codec_dev_wm8988 = {
816 .probe = wm8988_probe,
817 .set_bias_level = wm8988_set_bias_level,
818 .suspend_bias_off = true,
820 .component_driver = {
821 .controls = wm8988_snd_controls,
822 .num_controls = ARRAY_SIZE(wm8988_snd_controls),
823 .dapm_widgets = wm8988_dapm_widgets,
824 .num_dapm_widgets = ARRAY_SIZE(wm8988_dapm_widgets),
825 .dapm_routes = wm8988_dapm_routes,
826 .num_dapm_routes = ARRAY_SIZE(wm8988_dapm_routes),
830 static const struct regmap_config wm8988_regmap = {
834 .max_register = WM8988_LPPB,
835 .writeable_reg = wm8988_writeable,
837 .cache_type = REGCACHE_RBTREE,
838 .reg_defaults = wm8988_reg_defaults,
839 .num_reg_defaults = ARRAY_SIZE(wm8988_reg_defaults),
842 #if defined(CONFIG_SPI_MASTER)
843 static int wm8988_spi_probe(struct spi_device *spi)
845 struct wm8988_priv *wm8988;
848 wm8988 = devm_kzalloc(&spi->dev, sizeof(struct wm8988_priv),
853 wm8988->regmap = devm_regmap_init_spi(spi, &wm8988_regmap);
854 if (IS_ERR(wm8988->regmap)) {
855 ret = PTR_ERR(wm8988->regmap);
856 dev_err(&spi->dev, "Failed to init regmap: %d\n", ret);
860 spi_set_drvdata(spi, wm8988);
862 ret = snd_soc_register_codec(&spi->dev,
863 &soc_codec_dev_wm8988, &wm8988_dai, 1);
867 static int wm8988_spi_remove(struct spi_device *spi)
869 snd_soc_unregister_codec(&spi->dev);
873 static struct spi_driver wm8988_spi_driver = {
877 .probe = wm8988_spi_probe,
878 .remove = wm8988_spi_remove,
880 #endif /* CONFIG_SPI_MASTER */
882 #if IS_ENABLED(CONFIG_I2C)
883 static int wm8988_i2c_probe(struct i2c_client *i2c,
884 const struct i2c_device_id *id)
886 struct wm8988_priv *wm8988;
889 wm8988 = devm_kzalloc(&i2c->dev, sizeof(struct wm8988_priv),
894 i2c_set_clientdata(i2c, wm8988);
896 wm8988->regmap = devm_regmap_init_i2c(i2c, &wm8988_regmap);
897 if (IS_ERR(wm8988->regmap)) {
898 ret = PTR_ERR(wm8988->regmap);
899 dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
903 ret = snd_soc_register_codec(&i2c->dev,
904 &soc_codec_dev_wm8988, &wm8988_dai, 1);
908 static int wm8988_i2c_remove(struct i2c_client *client)
910 snd_soc_unregister_codec(&client->dev);
914 static const struct i2c_device_id wm8988_i2c_id[] = {
918 MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id);
920 static struct i2c_driver wm8988_i2c_driver = {
924 .probe = wm8988_i2c_probe,
925 .remove = wm8988_i2c_remove,
926 .id_table = wm8988_i2c_id,
930 static int __init wm8988_modinit(void)
933 #if IS_ENABLED(CONFIG_I2C)
934 ret = i2c_add_driver(&wm8988_i2c_driver);
936 printk(KERN_ERR "Failed to register WM8988 I2C driver: %d\n",
940 #if defined(CONFIG_SPI_MASTER)
941 ret = spi_register_driver(&wm8988_spi_driver);
943 printk(KERN_ERR "Failed to register WM8988 SPI driver: %d\n",
949 module_init(wm8988_modinit);
951 static void __exit wm8988_exit(void)
953 #if IS_ENABLED(CONFIG_I2C)
954 i2c_del_driver(&wm8988_i2c_driver);
956 #if defined(CONFIG_SPI_MASTER)
957 spi_unregister_driver(&wm8988_spi_driver);
960 module_exit(wm8988_exit);
963 MODULE_DESCRIPTION("ASoC WM8988 driver");
964 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
965 MODULE_LICENSE("GPL");