2 * Nuvoton NAU8825 audio codec driver
4 * Copyright 2015 Google Chromium project.
5 * Author: Anatol Pomozov <anatol@chromium.org>
6 * Copyright 2015 Nuvoton Technology Corp.
7 * Co-author: Meng-Huang Kuo <mhkuo@nuvoton.com>
9 * Licensed under the GPL-2.
12 #include <linux/module.h>
13 #include <linux/delay.h>
14 #include <linux/init.h>
15 #include <linux/i2c.h>
16 #include <linux/regmap.h>
17 #include <linux/slab.h>
18 #include <linux/clk.h>
19 #include <linux/acpi.h>
20 #include <linux/math64.h>
21 #include <linux/semaphore.h>
23 #include <sound/initval.h>
24 #include <sound/tlv.h>
25 #include <sound/core.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/soc.h>
29 #include <sound/jack.h>
35 #define NUVOTON_CODEC_DAI "nau8825-hifi"
37 #define NAU_FREF_MAX 13500000
38 #define NAU_FVCO_MAX 124000000
39 #define NAU_FVCO_MIN 90000000
41 /* cross talk suppression detection */
42 #define LOG10_MAGIC 646456993
43 #define GAIN_AUGMENT 22500
44 #define SIDETONE_BASE 207000
46 /* the maximum frequency of CLK_ADC and CLK_DAC */
47 #define CLK_DA_AD_MAX 6144000
49 static int nau8825_configure_sysclk(struct nau8825 *nau8825,
50 int clk_id, unsigned int freq);
60 struct nau8825_fll_attr {
65 /* scaling for mclk from sysclk_src output */
66 static const struct nau8825_fll_attr mclk_src_scaling[] = {
82 /* ratio for input clk freq */
83 static const struct nau8825_fll_attr fll_ratio[] = {
93 static const struct nau8825_fll_attr fll_pre_scalar[] = {
100 /* over sampling rate */
101 struct nau8825_osr_attr {
103 unsigned int clk_src;
106 static const struct nau8825_osr_attr osr_dac_sel[] = {
107 { 64, 2 }, /* OSR 64, SRC 1/4 */
108 { 256, 0 }, /* OSR 256, SRC 1 */
109 { 128, 1 }, /* OSR 128, SRC 1/2 */
111 { 32, 3 }, /* OSR 32, SRC 1/8 */
114 static const struct nau8825_osr_attr osr_adc_sel[] = {
115 { 32, 3 }, /* OSR 32, SRC 1/8 */
116 { 64, 2 }, /* OSR 64, SRC 1/4 */
117 { 128, 1 }, /* OSR 128, SRC 1/2 */
118 { 256, 0 }, /* OSR 256, SRC 1 */
121 static const struct reg_default nau8825_reg_defaults[] = {
122 { NAU8825_REG_ENA_CTRL, 0x00ff },
123 { NAU8825_REG_IIC_ADDR_SET, 0x0 },
124 { NAU8825_REG_CLK_DIVIDER, 0x0050 },
125 { NAU8825_REG_FLL1, 0x0 },
126 { NAU8825_REG_FLL2, 0x3126 },
127 { NAU8825_REG_FLL3, 0x0008 },
128 { NAU8825_REG_FLL4, 0x0010 },
129 { NAU8825_REG_FLL5, 0x0 },
130 { NAU8825_REG_FLL6, 0x6000 },
131 { NAU8825_REG_FLL_VCO_RSV, 0xf13c },
132 { NAU8825_REG_HSD_CTRL, 0x000c },
133 { NAU8825_REG_JACK_DET_CTRL, 0x0 },
134 { NAU8825_REG_INTERRUPT_MASK, 0x0 },
135 { NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff },
136 { NAU8825_REG_SAR_CTRL, 0x0015 },
137 { NAU8825_REG_KEYDET_CTRL, 0x0110 },
138 { NAU8825_REG_VDET_THRESHOLD_1, 0x0 },
139 { NAU8825_REG_VDET_THRESHOLD_2, 0x0 },
140 { NAU8825_REG_VDET_THRESHOLD_3, 0x0 },
141 { NAU8825_REG_VDET_THRESHOLD_4, 0x0 },
142 { NAU8825_REG_GPIO34_CTRL, 0x0 },
143 { NAU8825_REG_GPIO12_CTRL, 0x0 },
144 { NAU8825_REG_TDM_CTRL, 0x0 },
145 { NAU8825_REG_I2S_PCM_CTRL1, 0x000b },
146 { NAU8825_REG_I2S_PCM_CTRL2, 0x8010 },
147 { NAU8825_REG_LEFT_TIME_SLOT, 0x0 },
148 { NAU8825_REG_RIGHT_TIME_SLOT, 0x0 },
149 { NAU8825_REG_BIQ_CTRL, 0x0 },
150 { NAU8825_REG_BIQ_COF1, 0x0 },
151 { NAU8825_REG_BIQ_COF2, 0x0 },
152 { NAU8825_REG_BIQ_COF3, 0x0 },
153 { NAU8825_REG_BIQ_COF4, 0x0 },
154 { NAU8825_REG_BIQ_COF5, 0x0 },
155 { NAU8825_REG_BIQ_COF6, 0x0 },
156 { NAU8825_REG_BIQ_COF7, 0x0 },
157 { NAU8825_REG_BIQ_COF8, 0x0 },
158 { NAU8825_REG_BIQ_COF9, 0x0 },
159 { NAU8825_REG_BIQ_COF10, 0x0 },
160 { NAU8825_REG_ADC_RATE, 0x0010 },
161 { NAU8825_REG_DAC_CTRL1, 0x0001 },
162 { NAU8825_REG_DAC_CTRL2, 0x0 },
163 { NAU8825_REG_DAC_DGAIN_CTRL, 0x0 },
164 { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf },
165 { NAU8825_REG_MUTE_CTRL, 0x0 },
166 { NAU8825_REG_HSVOL_CTRL, 0x0 },
167 { NAU8825_REG_DACL_CTRL, 0x02cf },
168 { NAU8825_REG_DACR_CTRL, 0x00cf },
169 { NAU8825_REG_ADC_DRC_KNEE_IP12, 0x1486 },
170 { NAU8825_REG_ADC_DRC_KNEE_IP34, 0x0f12 },
171 { NAU8825_REG_ADC_DRC_SLOPES, 0x25ff },
172 { NAU8825_REG_ADC_DRC_ATKDCY, 0x3457 },
173 { NAU8825_REG_DAC_DRC_KNEE_IP12, 0x1486 },
174 { NAU8825_REG_DAC_DRC_KNEE_IP34, 0x0f12 },
175 { NAU8825_REG_DAC_DRC_SLOPES, 0x25f9 },
176 { NAU8825_REG_DAC_DRC_ATKDCY, 0x3457 },
177 { NAU8825_REG_IMM_MODE_CTRL, 0x0 },
178 { NAU8825_REG_CLASSG_CTRL, 0x0 },
179 { NAU8825_REG_OPT_EFUSE_CTRL, 0x0 },
180 { NAU8825_REG_MISC_CTRL, 0x0 },
181 { NAU8825_REG_BIAS_ADJ, 0x0 },
182 { NAU8825_REG_TRIM_SETTINGS, 0x0 },
183 { NAU8825_REG_ANALOG_CONTROL_1, 0x0 },
184 { NAU8825_REG_ANALOG_CONTROL_2, 0x0 },
185 { NAU8825_REG_ANALOG_ADC_1, 0x0011 },
186 { NAU8825_REG_ANALOG_ADC_2, 0x0020 },
187 { NAU8825_REG_RDAC, 0x0008 },
188 { NAU8825_REG_MIC_BIAS, 0x0006 },
189 { NAU8825_REG_BOOST, 0x0 },
190 { NAU8825_REG_FEPGA, 0x0 },
191 { NAU8825_REG_POWER_UP_CONTROL, 0x0 },
192 { NAU8825_REG_CHARGE_PUMP, 0x0 },
195 /* register backup table when cross talk detection */
196 static struct reg_default nau8825_xtalk_baktab[] = {
197 { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf },
198 { NAU8825_REG_HSVOL_CTRL, 0 },
199 { NAU8825_REG_DACL_CTRL, 0x00cf },
200 { NAU8825_REG_DACR_CTRL, 0x02cf },
203 static const unsigned short logtable[256] = {
204 0x0000, 0x0171, 0x02e0, 0x044e, 0x05ba, 0x0725, 0x088e, 0x09f7,
205 0x0b5d, 0x0cc3, 0x0e27, 0x0f8a, 0x10eb, 0x124b, 0x13aa, 0x1508,
206 0x1664, 0x17bf, 0x1919, 0x1a71, 0x1bc8, 0x1d1e, 0x1e73, 0x1fc6,
207 0x2119, 0x226a, 0x23ba, 0x2508, 0x2656, 0x27a2, 0x28ed, 0x2a37,
208 0x2b80, 0x2cc8, 0x2e0f, 0x2f54, 0x3098, 0x31dc, 0x331e, 0x345f,
209 0x359f, 0x36de, 0x381b, 0x3958, 0x3a94, 0x3bce, 0x3d08, 0x3e41,
210 0x3f78, 0x40af, 0x41e4, 0x4319, 0x444c, 0x457f, 0x46b0, 0x47e1,
211 0x4910, 0x4a3f, 0x4b6c, 0x4c99, 0x4dc5, 0x4eef, 0x5019, 0x5142,
212 0x526a, 0x5391, 0x54b7, 0x55dc, 0x5700, 0x5824, 0x5946, 0x5a68,
213 0x5b89, 0x5ca8, 0x5dc7, 0x5ee5, 0x6003, 0x611f, 0x623a, 0x6355,
214 0x646f, 0x6588, 0x66a0, 0x67b7, 0x68ce, 0x69e4, 0x6af8, 0x6c0c,
215 0x6d20, 0x6e32, 0x6f44, 0x7055, 0x7165, 0x7274, 0x7383, 0x7490,
216 0x759d, 0x76aa, 0x77b5, 0x78c0, 0x79ca, 0x7ad3, 0x7bdb, 0x7ce3,
217 0x7dea, 0x7ef0, 0x7ff6, 0x80fb, 0x81ff, 0x8302, 0x8405, 0x8507,
218 0x8608, 0x8709, 0x8809, 0x8908, 0x8a06, 0x8b04, 0x8c01, 0x8cfe,
219 0x8dfa, 0x8ef5, 0x8fef, 0x90e9, 0x91e2, 0x92db, 0x93d2, 0x94ca,
220 0x95c0, 0x96b6, 0x97ab, 0x98a0, 0x9994, 0x9a87, 0x9b7a, 0x9c6c,
221 0x9d5e, 0x9e4f, 0x9f3f, 0xa02e, 0xa11e, 0xa20c, 0xa2fa, 0xa3e7,
222 0xa4d4, 0xa5c0, 0xa6ab, 0xa796, 0xa881, 0xa96a, 0xaa53, 0xab3c,
223 0xac24, 0xad0c, 0xadf2, 0xaed9, 0xafbe, 0xb0a4, 0xb188, 0xb26c,
224 0xb350, 0xb433, 0xb515, 0xb5f7, 0xb6d9, 0xb7ba, 0xb89a, 0xb97a,
225 0xba59, 0xbb38, 0xbc16, 0xbcf4, 0xbdd1, 0xbead, 0xbf8a, 0xc065,
226 0xc140, 0xc21b, 0xc2f5, 0xc3cf, 0xc4a8, 0xc580, 0xc658, 0xc730,
227 0xc807, 0xc8de, 0xc9b4, 0xca8a, 0xcb5f, 0xcc34, 0xcd08, 0xcddc,
228 0xceaf, 0xcf82, 0xd054, 0xd126, 0xd1f7, 0xd2c8, 0xd399, 0xd469,
229 0xd538, 0xd607, 0xd6d6, 0xd7a4, 0xd872, 0xd93f, 0xda0c, 0xdad9,
230 0xdba5, 0xdc70, 0xdd3b, 0xde06, 0xded0, 0xdf9a, 0xe063, 0xe12c,
231 0xe1f5, 0xe2bd, 0xe385, 0xe44c, 0xe513, 0xe5d9, 0xe69f, 0xe765,
232 0xe82a, 0xe8ef, 0xe9b3, 0xea77, 0xeb3b, 0xebfe, 0xecc1, 0xed83,
233 0xee45, 0xef06, 0xefc8, 0xf088, 0xf149, 0xf209, 0xf2c8, 0xf387,
234 0xf446, 0xf505, 0xf5c3, 0xf680, 0xf73e, 0xf7fb, 0xf8b7, 0xf973,
235 0xfa2f, 0xfaea, 0xfba5, 0xfc60, 0xfd1a, 0xfdd4, 0xfe8e, 0xff47
239 * nau8825_sema_acquire - acquire the semaphore of nau88l25
240 * @nau8825: component to register the codec private data with
241 * @timeout: how long in jiffies to wait before failure or zero to wait
244 * Attempts to acquire the semaphore with number of jiffies. If no more
245 * tasks are allowed to acquire the semaphore, calling this function will
246 * put the task to sleep. If the semaphore is not released within the
247 * specified number of jiffies, this function returns.
248 * If the semaphore is not released within the specified number of jiffies,
249 * this function returns -ETIME. If the sleep is interrupted by a signal,
250 * this function will return -EINTR. It returns 0 if the semaphore was
251 * acquired successfully.
253 * Acquires the semaphore without jiffies. Try to acquire the semaphore
254 * atomically. Returns 0 if the semaphore has been acquired successfully
255 * or 1 if it it cannot be acquired.
257 static int nau8825_sema_acquire(struct nau8825 *nau8825, long timeout)
262 ret = down_timeout(&nau8825->xtalk_sem, timeout);
264 dev_warn(nau8825->dev, "Acquire semaphore timeout\n");
266 ret = down_trylock(&nau8825->xtalk_sem);
268 dev_warn(nau8825->dev, "Acquire semaphore fail\n");
275 * nau8825_sema_release - release the semaphore of nau88l25
276 * @nau8825: component to register the codec private data with
278 * Release the semaphore which may be called from any context and
279 * even by tasks which have never called down().
281 static inline void nau8825_sema_release(struct nau8825 *nau8825)
283 up(&nau8825->xtalk_sem);
287 * nau8825_sema_reset - reset the semaphore for nau88l25
288 * @nau8825: component to register the codec private data with
290 * Reset the counter of the semaphore. Call this function to restart
291 * a new round task management.
293 static inline void nau8825_sema_reset(struct nau8825 *nau8825)
295 nau8825->xtalk_sem.count = 1;
299 * Ramp up the headphone volume change gradually to target level.
301 * @nau8825: component to register the codec private data with
302 * @vol_from: the volume to start up
303 * @vol_to: the target volume
304 * @step: the volume span to move on
306 * The headphone volume is from 0dB to minimum -54dB and -1dB per step.
307 * If the volume changes sharp, there is a pop noise heard in headphone. We
308 * provide the function to ramp up the volume up or down by delaying 10ms
311 static void nau8825_hpvol_ramp(struct nau8825 *nau8825,
312 unsigned int vol_from, unsigned int vol_to, unsigned int step)
314 unsigned int value, volume, ramp_up, from, to;
316 if (vol_from == vol_to || step == 0) {
318 } else if (vol_from < vol_to) {
327 /* only handle volume from 0dB to minimum -54dB */
328 if (to > NAU8825_HP_VOL_MIN)
329 to = NAU8825_HP_VOL_MIN;
331 for (volume = from; volume < to; volume += step) {
335 value = to - volume + from;
336 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
337 NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK,
338 (value << NAU8825_HPL_VOL_SFT) | value);
339 usleep_range(10000, 10500);
345 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
346 NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK,
347 (value << NAU8825_HPL_VOL_SFT) | value);
351 * Computes log10 of a value; the result is round off to 3 decimal. This func-
352 * tion takes reference to dvb-math. The source code locates as the following.
353 * Linux/drivers/media/dvb-core/dvb_math.c
355 * return log10(value) * 1000
357 static u32 nau8825_intlog10_dec3(u32 value)
359 u32 msb, logentry, significand, interpolation, log10val;
362 /* first detect the msb (count begins at 0) */
363 msb = fls(value) - 1;
365 * now we use a logtable after the following method:
367 * log2(2^x * y) * 2^24 = x * 2^24 + log2(y) * 2^24
368 * where x = msb and therefore 1 <= y < 2
369 * first y is determined by shifting the value left
370 * so that msb is bit 31
371 * 0x00231f56 -> 0x8C7D5800
372 * the result is y * 2^31 -> "significand"
373 * then the highest 9 bits are used for a table lookup
374 * the highest bit is discarded because it's always set
375 * the highest nine bits in our example are 100011000
376 * so we would use the entry 0x18
378 significand = value << (31 - msb);
379 logentry = (significand >> 23) & 0xff;
381 * last step we do is interpolation because of the
382 * limitations of the log table the error is that part of
383 * the significand which isn't used for lookup then we
384 * compute the ratio between the error and the next table entry
385 * and interpolate it between the log table entry used and the
386 * next one the biggest error possible is 0x7fffff
387 * (in our example it's 0x7D5800)
388 * needed value for next table entry is 0x800000
389 * so the interpolation is
390 * (error / 0x800000) * (logtable_next - logtable_current)
391 * in the implementation the division is moved to the end for
392 * better accuracy there is also an overflow correction if
393 * logtable_next is 256
395 interpolation = ((significand & 0x7fffff) *
396 ((logtable[(logentry + 1) & 0xff] -
397 logtable[logentry]) & 0xffff)) >> 15;
399 log2val = ((msb << 24) + (logtable[logentry] << 8) + interpolation);
401 * log10(x) = log2(x) * log10(2)
403 log10val = (log2val * LOG10_MAGIC) >> 31;
405 * the result is round off to 3 decimal
407 return log10val / ((1 << 24) / 1000);
411 * computes cross talk suppression sidetone gain.
413 * @sig_org: orignal signal level
414 * @sig_cros: cross talk signal level
416 * The orignal and cross talk signal vlues need to be characterized.
417 * Once these values have been characterized, this sidetone value
418 * can be converted to decibel with the equation below.
419 * sidetone = 20 * log (original signal level / crosstalk signal level)
421 * return cross talk sidetone gain
423 static u32 nau8825_xtalk_sidetone(u32 sig_org, u32 sig_cros)
427 if (unlikely(sig_org == 0) || unlikely(sig_cros == 0)) {
432 sig_org = nau8825_intlog10_dec3(sig_org);
433 sig_cros = nau8825_intlog10_dec3(sig_cros);
434 if (sig_org >= sig_cros)
435 gain = (sig_org - sig_cros) * 20 + GAIN_AUGMENT;
437 gain = (sig_cros - sig_org) * 20 + GAIN_AUGMENT;
438 sidetone = SIDETONE_BASE - gain * 2;
444 static int nau8825_xtalk_baktab_index_by_reg(unsigned int reg)
448 for (index = 0; index < ARRAY_SIZE(nau8825_xtalk_baktab); index++)
449 if (nau8825_xtalk_baktab[index].reg == reg)
454 static void nau8825_xtalk_backup(struct nau8825 *nau8825)
458 if (nau8825->xtalk_baktab_initialized)
461 /* Backup some register values to backup table */
462 for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++)
463 regmap_read(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
464 &nau8825_xtalk_baktab[i].def);
466 nau8825->xtalk_baktab_initialized = true;
469 static void nau8825_xtalk_restore(struct nau8825 *nau8825, bool cause_cancel)
473 if (!nau8825->xtalk_baktab_initialized)
476 /* Restore register values from backup table; When the driver restores
477 * the headphone volume in XTALK_DONE state, it needs recover to
478 * original level gradually with 3dB per step for less pop noise.
479 * Otherwise, the restore should do ASAP.
481 for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++) {
482 if (!cause_cancel && nau8825_xtalk_baktab[i].reg ==
483 NAU8825_REG_HSVOL_CTRL) {
484 /* Ramping up the volume change to reduce pop noise */
485 volume = nau8825_xtalk_baktab[i].def &
486 NAU8825_HPR_VOL_MASK;
487 nau8825_hpvol_ramp(nau8825, 0, volume, 3);
490 regmap_write(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
491 nau8825_xtalk_baktab[i].def);
494 nau8825->xtalk_baktab_initialized = false;
497 static void nau8825_xtalk_prepare_dac(struct nau8825 *nau8825)
499 /* Enable power of DAC path */
500 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
501 NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL |
502 NAU8825_ENABLE_ADC | NAU8825_ENABLE_ADC_CLK |
503 NAU8825_ENABLE_DAC_CLK, NAU8825_ENABLE_DACR |
504 NAU8825_ENABLE_DACL | NAU8825_ENABLE_ADC |
505 NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK);
506 /* Prevent startup click by letting charge pump to ramp up and
509 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
510 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN,
511 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN);
512 /* Enable clock sync of DAC and DAC clock */
513 regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC,
514 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN |
515 NAU8825_RDAC_FS_BCLK_ENB,
516 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN);
517 /* Power up output driver with 2 stage */
518 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
519 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
520 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L,
521 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
522 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L);
523 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
524 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L,
525 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L);
526 /* HP outputs not shouted to ground */
527 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL,
528 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L, 0);
529 /* Enable HP boost driver */
530 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
531 NAU8825_HP_BOOST_DIS, NAU8825_HP_BOOST_DIS);
532 /* Enable class G compare path to supply 1.8V or 0.9V. */
533 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLASSG_CTRL,
534 NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN,
535 NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN);
538 static void nau8825_xtalk_prepare_adc(struct nau8825 *nau8825)
540 /* Power up left ADC and raise 5dB than Vmid for Vref */
541 regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2,
542 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK,
543 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_VMID_PLUS_0_5DB);
546 static void nau8825_xtalk_clock(struct nau8825 *nau8825)
548 /* Recover FLL default value */
549 regmap_write(nau8825->regmap, NAU8825_REG_FLL1, 0x0);
550 regmap_write(nau8825->regmap, NAU8825_REG_FLL2, 0x3126);
551 regmap_write(nau8825->regmap, NAU8825_REG_FLL3, 0x0008);
552 regmap_write(nau8825->regmap, NAU8825_REG_FLL4, 0x0010);
553 regmap_write(nau8825->regmap, NAU8825_REG_FLL5, 0x0);
554 regmap_write(nau8825->regmap, NAU8825_REG_FLL6, 0x6000);
555 /* Enable internal VCO clock for detection signal generated */
556 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
557 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
558 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN,
560 /* Given specific clock frequency of internal clock to
563 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
564 NAU8825_CLK_MCLK_SRC_MASK, 0xf);
565 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1,
566 NAU8825_FLL_RATIO_MASK, 0x10);
569 static void nau8825_xtalk_prepare(struct nau8825 *nau8825)
573 /* Backup those registers changed by cross talk detection */
574 nau8825_xtalk_backup(nau8825);
575 /* Config IIS as master to output signal by codec */
576 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
577 NAU8825_I2S_MS_MASK | NAU8825_I2S_LRC_DIV_MASK |
578 NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_MASTER |
579 (0x2 << NAU8825_I2S_LRC_DIV_SFT) | 0x1);
580 /* Ramp up headphone volume to 0dB to get better performance and
581 * avoid pop noise in headphone.
583 index = nau8825_xtalk_baktab_index_by_reg(NAU8825_REG_HSVOL_CTRL);
584 if (index != -EINVAL) {
585 volume = nau8825_xtalk_baktab[index].def &
586 NAU8825_HPR_VOL_MASK;
587 nau8825_hpvol_ramp(nau8825, volume, 0, 3);
589 nau8825_xtalk_clock(nau8825);
590 nau8825_xtalk_prepare_dac(nau8825);
591 nau8825_xtalk_prepare_adc(nau8825);
592 /* Config channel path and digital gain */
593 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL,
594 NAU8825_DACL_CH_SEL_MASK | NAU8825_DACL_CH_VOL_MASK,
595 NAU8825_DACL_CH_SEL_L | 0xab);
596 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL,
597 NAU8825_DACR_CH_SEL_MASK | NAU8825_DACR_CH_VOL_MASK,
598 NAU8825_DACR_CH_SEL_R | 0xab);
599 /* Config cross talk parameters and generate the 23Hz sine wave with
600 * 1/16 full scale of signal level for impedance measurement.
602 regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL,
603 NAU8825_IMM_THD_MASK | NAU8825_IMM_GEN_VOL_MASK |
604 NAU8825_IMM_CYC_MASK | NAU8825_IMM_DAC_SRC_MASK,
605 (0x9 << NAU8825_IMM_THD_SFT) | NAU8825_IMM_GEN_VOL_1_16th |
606 NAU8825_IMM_CYC_8192 | NAU8825_IMM_DAC_SRC_SIN);
607 /* RMS intrruption enable */
608 regmap_update_bits(nau8825->regmap,
609 NAU8825_REG_INTERRUPT_MASK, NAU8825_IRQ_RMS_EN, 0);
610 /* Power up left and right DAC */
611 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
612 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0);
615 static void nau8825_xtalk_clean_dac(struct nau8825 *nau8825)
617 /* Disable HP boost driver */
618 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
619 NAU8825_HP_BOOST_DIS, 0);
620 /* HP outputs shouted to ground */
621 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL,
622 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L,
623 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
624 /* Power down left and right DAC */
625 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
626 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
627 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
628 /* Enable the TESTDAC and disable L/R HP impedance */
629 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
630 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP |
631 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
632 /* Power down output driver with 2 stage */
633 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
634 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L, 0);
635 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
636 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
637 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L, 0);
638 /* Disable clock sync of DAC and DAC clock */
639 regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC,
640 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN, 0);
641 /* Disable charge pump ramp up function and change bump */
642 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
643 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN, 0);
644 /* Disable power of DAC path */
645 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
646 NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL |
647 NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK, 0);
649 regmap_update_bits(nau8825->regmap,
650 NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0);
653 static void nau8825_xtalk_clean_adc(struct nau8825 *nau8825)
655 /* Power down left ADC and restore voltage to Vmid */
656 regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2,
657 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK, 0);
660 static void nau8825_xtalk_clean(struct nau8825 *nau8825, bool cause_cancel)
662 /* Enable internal VCO needed for interruptions */
663 nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
664 nau8825_xtalk_clean_dac(nau8825);
665 nau8825_xtalk_clean_adc(nau8825);
666 /* Clear cross talk parameters and disable */
667 regmap_write(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL, 0);
668 /* RMS intrruption disable */
669 regmap_update_bits(nau8825->regmap, NAU8825_REG_INTERRUPT_MASK,
670 NAU8825_IRQ_RMS_EN, NAU8825_IRQ_RMS_EN);
671 /* Recover default value for IIS */
672 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
673 NAU8825_I2S_MS_MASK | NAU8825_I2S_LRC_DIV_MASK |
674 NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_SLAVE);
675 /* Restore value of specific register for cross talk */
676 nau8825_xtalk_restore(nau8825, cause_cancel);
679 static void nau8825_xtalk_imm_start(struct nau8825 *nau8825, int vol)
681 /* Apply ADC volume for better cross talk performance */
682 regmap_update_bits(nau8825->regmap, NAU8825_REG_ADC_DGAIN_CTRL,
683 NAU8825_ADC_DIG_VOL_MASK, vol);
684 /* Disables JKTIP(HPL) DAC channel for right to left measurement.
685 * Do it before sending signal in order to erase pop noise.
687 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
688 NAU8825_BIAS_TESTDACR_EN | NAU8825_BIAS_TESTDACL_EN,
689 NAU8825_BIAS_TESTDACL_EN);
690 switch (nau8825->xtalk_state) {
691 case NAU8825_XTALK_HPR_R2L:
692 /* Enable right headphone impedance */
693 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
694 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP,
695 NAU8825_BIAS_HPR_IMP);
697 case NAU8825_XTALK_HPL_R2L:
698 /* Enable left headphone impedance */
699 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
700 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP,
701 NAU8825_BIAS_HPL_IMP);
707 /* Impedance measurement mode enable */
708 regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL,
709 NAU8825_IMM_EN, NAU8825_IMM_EN);
712 static void nau8825_xtalk_imm_stop(struct nau8825 *nau8825)
714 /* Impedance measurement mode disable */
715 regmap_update_bits(nau8825->regmap,
716 NAU8825_REG_IMM_MODE_CTRL, NAU8825_IMM_EN, 0);
719 /* The cross talk measurement function can reduce cross talk across the
720 * JKTIP(HPL) and JKR1(HPR) outputs which measures the cross talk signal
721 * level to determine what cross talk reduction gain is. This system works by
722 * sending a 23Hz -24dBV sine wave into the headset output DAC and through
723 * the PGA. The output of the PGA is then connected to an internal current
724 * sense which measures the attenuated 23Hz signal and passing the output to
725 * an ADC which converts the measurement to a binary code. With two separated
726 * measurement, one for JKR1(HPR) and the other JKTIP(HPL), measurement data
727 * can be separated read in IMM_RMS_L for HSR and HSL after each measurement.
728 * Thus, the measurement function has four states to complete whole sequence.
729 * 1. Prepare state : Prepare the resource for detection and transfer to HPR
730 * IMM stat to make JKR1(HPR) impedance measure.
731 * 2. HPR IMM state : Read out orignal signal level of JKR1(HPR) and transfer
732 * to HPL IMM state to make JKTIP(HPL) impedance measure.
733 * 3. HPL IMM state : Read out cross talk signal level of JKTIP(HPL) and
734 * transfer to IMM state to determine suppression sidetone gain.
735 * 4. IMM state : Computes cross talk suppression sidetone gain with orignal
736 * and cross talk signal level. Apply this gain and then restore codec
737 * configuration. Then transfer to Done state for ending.
739 static void nau8825_xtalk_measure(struct nau8825 *nau8825)
743 switch (nau8825->xtalk_state) {
744 case NAU8825_XTALK_PREPARE:
745 /* In prepare state, set up clock, intrruption, DAC path, ADC
746 * path and cross talk detection parameters for preparation.
748 nau8825_xtalk_prepare(nau8825);
750 /* Trigger right headphone impedance detection */
751 nau8825->xtalk_state = NAU8825_XTALK_HPR_R2L;
752 nau8825_xtalk_imm_start(nau8825, 0x00d2);
754 case NAU8825_XTALK_HPR_R2L:
755 /* In right headphone IMM state, read out right headphone
756 * impedance measure result, and then start up left side.
758 regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L,
759 &nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]);
760 dev_dbg(nau8825->dev, "HPR_R2L imm: %x\n",
761 nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]);
762 /* Disable then re-enable IMM mode to update */
763 nau8825_xtalk_imm_stop(nau8825);
764 /* Trigger left headphone impedance detection */
765 nau8825->xtalk_state = NAU8825_XTALK_HPL_R2L;
766 nau8825_xtalk_imm_start(nau8825, 0x00ff);
768 case NAU8825_XTALK_HPL_R2L:
769 /* In left headphone IMM state, read out left headphone
770 * impedance measure result, and delay some time to wait
771 * detection sine wave output finish. Then, we can calculate
772 * the cross talk suppresstion side tone according to the L/R
773 * headphone imedance.
775 regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L,
776 &nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
777 dev_dbg(nau8825->dev, "HPL_R2L imm: %x\n",
778 nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
779 nau8825_xtalk_imm_stop(nau8825);
781 nau8825->xtalk_state = NAU8825_XTALK_IMM;
783 case NAU8825_XTALK_IMM:
784 /* In impedance measure state, the orignal and cross talk
785 * signal level vlues are ready. The side tone gain is deter-
786 * mined with these signal level. After all, restore codec
789 sidetone = nau8825_xtalk_sidetone(
790 nau8825->imp_rms[NAU8825_XTALK_HPR_R2L],
791 nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
792 dev_dbg(nau8825->dev, "cross talk sidetone: %x\n", sidetone);
793 regmap_write(nau8825->regmap, NAU8825_REG_DAC_DGAIN_CTRL,
794 (sidetone << 8) | sidetone);
795 nau8825_xtalk_clean(nau8825, false);
796 nau8825->xtalk_state = NAU8825_XTALK_DONE;
803 static void nau8825_xtalk_work(struct work_struct *work)
805 struct nau8825 *nau8825 = container_of(
806 work, struct nau8825, xtalk_work);
808 nau8825_xtalk_measure(nau8825);
809 /* To determine the cross talk side tone gain when reach
810 * the impedance measure state.
812 if (nau8825->xtalk_state == NAU8825_XTALK_IMM)
813 nau8825_xtalk_measure(nau8825);
815 /* Delay jack report until cross talk detection process
816 * completed. It can avoid application to do playback
817 * preparation before cross talk detection is still working.
818 * Meanwhile, the protection of the cross talk detection
821 if (nau8825->xtalk_state == NAU8825_XTALK_DONE) {
822 snd_soc_jack_report(nau8825->jack, nau8825->xtalk_event,
823 nau8825->xtalk_event_mask);
824 nau8825_sema_release(nau8825);
825 nau8825->xtalk_protect = false;
829 static void nau8825_xtalk_cancel(struct nau8825 *nau8825)
831 /* If the crosstalk is eanbled and the process is on going,
832 * the driver forces to cancel the crosstalk task and
833 * restores the configuration to original status.
835 if (nau8825->xtalk_enable && nau8825->xtalk_state !=
836 NAU8825_XTALK_DONE) {
837 cancel_work_sync(&nau8825->xtalk_work);
838 nau8825_xtalk_clean(nau8825, true);
840 /* Reset parameters for cross talk suppression function */
841 nau8825_sema_reset(nau8825);
842 nau8825->xtalk_state = NAU8825_XTALK_DONE;
843 nau8825->xtalk_protect = false;
846 static bool nau8825_readable_reg(struct device *dev, unsigned int reg)
849 case NAU8825_REG_ENA_CTRL ... NAU8825_REG_FLL_VCO_RSV:
850 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL:
851 case NAU8825_REG_INTERRUPT_MASK ... NAU8825_REG_KEYDET_CTRL:
852 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL:
853 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY:
854 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY:
855 case NAU8825_REG_IMM_MODE_CTRL ... NAU8825_REG_IMM_RMS_R:
856 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL:
857 case NAU8825_REG_MISC_CTRL:
858 case NAU8825_REG_I2C_DEVICE_ID ... NAU8825_REG_SARDOUT_RAM_STATUS:
859 case NAU8825_REG_BIAS_ADJ:
860 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2:
861 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS:
862 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA:
863 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_GENERAL_STATUS:
871 static bool nau8825_writeable_reg(struct device *dev, unsigned int reg)
874 case NAU8825_REG_RESET ... NAU8825_REG_FLL_VCO_RSV:
875 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL:
876 case NAU8825_REG_INTERRUPT_MASK:
877 case NAU8825_REG_INT_CLR_KEY_STATUS ... NAU8825_REG_KEYDET_CTRL:
878 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL:
879 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY:
880 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY:
881 case NAU8825_REG_IMM_MODE_CTRL:
882 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL:
883 case NAU8825_REG_MISC_CTRL:
884 case NAU8825_REG_BIAS_ADJ:
885 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2:
886 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS:
887 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA:
888 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_CHARGE_PUMP:
895 static bool nau8825_volatile_reg(struct device *dev, unsigned int reg)
898 case NAU8825_REG_RESET:
899 case NAU8825_REG_IRQ_STATUS:
900 case NAU8825_REG_INT_CLR_KEY_STATUS:
901 case NAU8825_REG_IMM_RMS_L:
902 case NAU8825_REG_IMM_RMS_R:
903 case NAU8825_REG_I2C_DEVICE_ID:
904 case NAU8825_REG_SARDOUT_RAM_STATUS:
905 case NAU8825_REG_CHARGE_PUMP_INPUT_READ:
906 case NAU8825_REG_GENERAL_STATUS:
907 case NAU8825_REG_BIQ_CTRL ... NAU8825_REG_BIQ_COF10:
914 static int nau8825_adc_event(struct snd_soc_dapm_widget *w,
915 struct snd_kcontrol *kcontrol, int event)
917 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
918 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
921 case SND_SOC_DAPM_POST_PMU:
922 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
923 NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
925 case SND_SOC_DAPM_POST_PMD:
927 regmap_update_bits(nau8825->regmap,
928 NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0);
937 static int nau8825_pump_event(struct snd_soc_dapm_widget *w,
938 struct snd_kcontrol *kcontrol, int event)
940 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
941 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
944 case SND_SOC_DAPM_POST_PMU:
945 /* Prevent startup click by letting charge pump to ramp up */
947 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
948 NAU8825_JAMNODCLOW, NAU8825_JAMNODCLOW);
950 case SND_SOC_DAPM_PRE_PMD:
951 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
952 NAU8825_JAMNODCLOW, 0);
961 static int nau8825_output_dac_event(struct snd_soc_dapm_widget *w,
962 struct snd_kcontrol *kcontrol, int event)
964 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
965 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
968 case SND_SOC_DAPM_PRE_PMU:
969 /* Disables the TESTDAC to let DAC signal pass through. */
970 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
971 NAU8825_BIAS_TESTDAC_EN, 0);
973 case SND_SOC_DAPM_POST_PMD:
974 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
975 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
984 static int nau8825_biq_coeff_get(struct snd_kcontrol *kcontrol,
985 struct snd_ctl_elem_value *ucontrol)
987 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
988 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
990 if (!component->regmap)
993 regmap_raw_read(component->regmap, NAU8825_REG_BIQ_COF1,
994 ucontrol->value.bytes.data, params->max);
998 static int nau8825_biq_coeff_put(struct snd_kcontrol *kcontrol,
999 struct snd_ctl_elem_value *ucontrol)
1001 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1002 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
1005 if (!component->regmap)
1008 data = kmemdup(ucontrol->value.bytes.data,
1009 params->max, GFP_KERNEL | GFP_DMA);
1013 regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL,
1014 NAU8825_BIQ_WRT_EN, 0);
1015 regmap_raw_write(component->regmap, NAU8825_REG_BIQ_COF1,
1017 regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL,
1018 NAU8825_BIQ_WRT_EN, NAU8825_BIQ_WRT_EN);
1024 static const char * const nau8825_biq_path[] = {
1028 static const struct soc_enum nau8825_biq_path_enum =
1029 SOC_ENUM_SINGLE(NAU8825_REG_BIQ_CTRL, NAU8825_BIQ_PATH_SFT,
1030 ARRAY_SIZE(nau8825_biq_path), nau8825_biq_path);
1032 static const char * const nau8825_adc_decimation[] = {
1033 "32", "64", "128", "256"
1036 static const struct soc_enum nau8825_adc_decimation_enum =
1037 SOC_ENUM_SINGLE(NAU8825_REG_ADC_RATE, NAU8825_ADC_SYNC_DOWN_SFT,
1038 ARRAY_SIZE(nau8825_adc_decimation), nau8825_adc_decimation);
1040 static const char * const nau8825_dac_oversampl[] = {
1041 "64", "256", "128", "", "32"
1044 static const struct soc_enum nau8825_dac_oversampl_enum =
1045 SOC_ENUM_SINGLE(NAU8825_REG_DAC_CTRL1, NAU8825_DAC_OVERSAMPLE_SFT,
1046 ARRAY_SIZE(nau8825_dac_oversampl), nau8825_dac_oversampl);
1048 static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -10300, 2400);
1049 static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0);
1050 static const DECLARE_TLV_DB_MINMAX(dac_vol_tlv, -5400, 0);
1051 static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600);
1052 static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -9600, 2400);
1054 static const struct snd_kcontrol_new nau8825_controls[] = {
1055 SOC_SINGLE_TLV("Mic Volume", NAU8825_REG_ADC_DGAIN_CTRL,
1056 0, 0xff, 0, adc_vol_tlv),
1057 SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8825_REG_ADC_DGAIN_CTRL,
1058 12, 8, 0x0f, 0, sidetone_vol_tlv),
1059 SOC_DOUBLE_TLV("Headphone Volume", NAU8825_REG_HSVOL_CTRL,
1060 6, 0, 0x3f, 1, dac_vol_tlv),
1061 SOC_SINGLE_TLV("Frontend PGA Volume", NAU8825_REG_POWER_UP_CONTROL,
1062 8, 37, 0, fepga_gain_tlv),
1063 SOC_DOUBLE_TLV("Headphone Crosstalk Volume", NAU8825_REG_DAC_DGAIN_CTRL,
1064 0, 8, 0xff, 0, crosstalk_vol_tlv),
1066 SOC_ENUM("ADC Decimation Rate", nau8825_adc_decimation_enum),
1067 SOC_ENUM("DAC Oversampling Rate", nau8825_dac_oversampl_enum),
1068 /* programmable biquad filter */
1069 SOC_ENUM("BIQ Path Select", nau8825_biq_path_enum),
1070 SND_SOC_BYTES_EXT("BIQ Coefficients", 20,
1071 nau8825_biq_coeff_get, nau8825_biq_coeff_put),
1074 /* DAC Mux 0x33[9] and 0x34[9] */
1075 static const char * const nau8825_dac_src[] = {
1079 static SOC_ENUM_SINGLE_DECL(
1080 nau8825_dacl_enum, NAU8825_REG_DACL_CTRL,
1081 NAU8825_DACL_CH_SEL_SFT, nau8825_dac_src);
1083 static SOC_ENUM_SINGLE_DECL(
1084 nau8825_dacr_enum, NAU8825_REG_DACR_CTRL,
1085 NAU8825_DACR_CH_SEL_SFT, nau8825_dac_src);
1087 static const struct snd_kcontrol_new nau8825_dacl_mux =
1088 SOC_DAPM_ENUM("DACL Source", nau8825_dacl_enum);
1090 static const struct snd_kcontrol_new nau8825_dacr_mux =
1091 SOC_DAPM_ENUM("DACR Source", nau8825_dacr_enum);
1094 static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = {
1095 SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8825_REG_I2S_PCM_CTRL2,
1098 SND_SOC_DAPM_INPUT("MIC"),
1099 SND_SOC_DAPM_MICBIAS("MICBIAS", NAU8825_REG_MIC_BIAS, 8, 0),
1101 SND_SOC_DAPM_PGA("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0,
1104 SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0,
1105 nau8825_adc_event, SND_SOC_DAPM_POST_PMU |
1106 SND_SOC_DAPM_POST_PMD),
1107 SND_SOC_DAPM_SUPPLY("ADC Clock", NAU8825_REG_ENA_CTRL, 7, 0, NULL, 0),
1108 SND_SOC_DAPM_SUPPLY("ADC Power", NAU8825_REG_ANALOG_ADC_2, 6, 0, NULL,
1111 /* ADC for button press detection. A dapm supply widget is used to
1112 * prevent dapm_power_widgets keeping the codec at SND_SOC_BIAS_ON
1115 SND_SOC_DAPM_SUPPLY("SAR", NAU8825_REG_SAR_CTRL,
1116 NAU8825_SAR_ADC_EN_SFT, 0, NULL, 0),
1118 SND_SOC_DAPM_PGA_S("ADACL", 2, NAU8825_REG_RDAC, 12, 0, NULL, 0),
1119 SND_SOC_DAPM_PGA_S("ADACR", 2, NAU8825_REG_RDAC, 13, 0, NULL, 0),
1120 SND_SOC_DAPM_PGA_S("ADACL Clock", 3, NAU8825_REG_RDAC, 8, 0, NULL, 0),
1121 SND_SOC_DAPM_PGA_S("ADACR Clock", 3, NAU8825_REG_RDAC, 9, 0, NULL, 0),
1123 SND_SOC_DAPM_DAC("DDACR", NULL, NAU8825_REG_ENA_CTRL,
1124 NAU8825_ENABLE_DACR_SFT, 0),
1125 SND_SOC_DAPM_DAC("DDACL", NULL, NAU8825_REG_ENA_CTRL,
1126 NAU8825_ENABLE_DACL_SFT, 0),
1127 SND_SOC_DAPM_SUPPLY("DDAC Clock", NAU8825_REG_ENA_CTRL, 6, 0, NULL, 0),
1129 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacl_mux),
1130 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacr_mux),
1132 SND_SOC_DAPM_PGA_S("HP amp L", 0,
1133 NAU8825_REG_CLASSG_CTRL, 1, 0, NULL, 0),
1134 SND_SOC_DAPM_PGA_S("HP amp R", 0,
1135 NAU8825_REG_CLASSG_CTRL, 2, 0, NULL, 0),
1137 SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8825_REG_CHARGE_PUMP, 5, 0,
1138 nau8825_pump_event, SND_SOC_DAPM_POST_PMU |
1139 SND_SOC_DAPM_PRE_PMD),
1141 SND_SOC_DAPM_PGA_S("Output Driver R Stage 1", 4,
1142 NAU8825_REG_POWER_UP_CONTROL, 5, 0, NULL, 0),
1143 SND_SOC_DAPM_PGA_S("Output Driver L Stage 1", 4,
1144 NAU8825_REG_POWER_UP_CONTROL, 4, 0, NULL, 0),
1145 SND_SOC_DAPM_PGA_S("Output Driver R Stage 2", 5,
1146 NAU8825_REG_POWER_UP_CONTROL, 3, 0, NULL, 0),
1147 SND_SOC_DAPM_PGA_S("Output Driver L Stage 2", 5,
1148 NAU8825_REG_POWER_UP_CONTROL, 2, 0, NULL, 0),
1149 SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 6,
1150 NAU8825_REG_POWER_UP_CONTROL, 1, 0, NULL, 0),
1151 SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 6,
1152 NAU8825_REG_POWER_UP_CONTROL, 0, 0, NULL, 0),
1154 SND_SOC_DAPM_PGA_S("Output DACL", 7,
1155 NAU8825_REG_CHARGE_PUMP, 8, 1, nau8825_output_dac_event,
1156 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
1157 SND_SOC_DAPM_PGA_S("Output DACR", 7,
1158 NAU8825_REG_CHARGE_PUMP, 9, 1, nau8825_output_dac_event,
1159 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
1161 /* HPOL/R are ungrounded by disabling 16 Ohm pull-downs on playback */
1162 SND_SOC_DAPM_PGA_S("HPOL Pulldown", 8,
1163 NAU8825_REG_HSD_CTRL, 0, 1, NULL, 0),
1164 SND_SOC_DAPM_PGA_S("HPOR Pulldown", 8,
1165 NAU8825_REG_HSD_CTRL, 1, 1, NULL, 0),
1167 /* High current HPOL/R boost driver */
1168 SND_SOC_DAPM_PGA_S("HP Boost Driver", 9,
1169 NAU8825_REG_BOOST, 9, 1, NULL, 0),
1171 /* Class G operation control*/
1172 SND_SOC_DAPM_PGA_S("Class G", 10,
1173 NAU8825_REG_CLASSG_CTRL, 0, 0, NULL, 0),
1175 SND_SOC_DAPM_OUTPUT("HPOL"),
1176 SND_SOC_DAPM_OUTPUT("HPOR"),
1179 static const struct snd_soc_dapm_route nau8825_dapm_routes[] = {
1180 {"Frontend PGA", NULL, "MIC"},
1181 {"ADC", NULL, "Frontend PGA"},
1182 {"ADC", NULL, "ADC Clock"},
1183 {"ADC", NULL, "ADC Power"},
1184 {"AIFTX", NULL, "ADC"},
1186 {"DDACL", NULL, "Playback"},
1187 {"DDACR", NULL, "Playback"},
1188 {"DDACL", NULL, "DDAC Clock"},
1189 {"DDACR", NULL, "DDAC Clock"},
1190 {"DACL Mux", "DACL", "DDACL"},
1191 {"DACL Mux", "DACR", "DDACR"},
1192 {"DACR Mux", "DACL", "DDACL"},
1193 {"DACR Mux", "DACR", "DDACR"},
1194 {"HP amp L", NULL, "DACL Mux"},
1195 {"HP amp R", NULL, "DACR Mux"},
1196 {"Charge Pump", NULL, "HP amp L"},
1197 {"Charge Pump", NULL, "HP amp R"},
1198 {"ADACL", NULL, "Charge Pump"},
1199 {"ADACR", NULL, "Charge Pump"},
1200 {"ADACL Clock", NULL, "ADACL"},
1201 {"ADACR Clock", NULL, "ADACR"},
1202 {"Output Driver L Stage 1", NULL, "ADACL Clock"},
1203 {"Output Driver R Stage 1", NULL, "ADACR Clock"},
1204 {"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"},
1205 {"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"},
1206 {"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"},
1207 {"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"},
1208 {"Output DACL", NULL, "Output Driver L Stage 3"},
1209 {"Output DACR", NULL, "Output Driver R Stage 3"},
1210 {"HPOL Pulldown", NULL, "Output DACL"},
1211 {"HPOR Pulldown", NULL, "Output DACR"},
1212 {"HP Boost Driver", NULL, "HPOL Pulldown"},
1213 {"HP Boost Driver", NULL, "HPOR Pulldown"},
1214 {"Class G", NULL, "HP Boost Driver"},
1215 {"HPOL", NULL, "Class G"},
1216 {"HPOR", NULL, "Class G"},
1219 static int nau8825_clock_check(struct nau8825 *nau8825,
1220 int stream, int rate, int osr)
1224 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1225 if (osr >= ARRAY_SIZE(osr_dac_sel))
1227 osrate = osr_dac_sel[osr].osr;
1229 if (osr >= ARRAY_SIZE(osr_adc_sel))
1231 osrate = osr_adc_sel[osr].osr;
1234 if (!osrate || rate * osr > CLK_DA_AD_MAX) {
1235 dev_err(nau8825->dev, "exceed the maximum frequency of CLK_ADC or CLK_DAC\n");
1242 static int nau8825_hw_params(struct snd_pcm_substream *substream,
1243 struct snd_pcm_hw_params *params,
1244 struct snd_soc_dai *dai)
1246 struct snd_soc_codec *codec = dai->codec;
1247 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
1248 unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div;
1250 nau8825_sema_acquire(nau8825, 3 * HZ);
1252 /* CLK_DAC or CLK_ADC = OSR * FS
1253 * DAC or ADC clock frequency is defined as Over Sampling Rate (OSR)
1254 * multiplied by the audio sample rate (Fs). Note that the OSR and Fs
1255 * values must be selected such that the maximum frequency is less
1258 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1259 regmap_read(nau8825->regmap, NAU8825_REG_DAC_CTRL1, &osr);
1260 osr &= NAU8825_DAC_OVERSAMPLE_MASK;
1261 if (nau8825_clock_check(nau8825, substream->stream,
1262 params_rate(params), osr)) {
1263 nau8825_sema_release(nau8825);
1266 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
1267 NAU8825_CLK_DAC_SRC_MASK,
1268 osr_dac_sel[osr].clk_src << NAU8825_CLK_DAC_SRC_SFT);
1270 regmap_read(nau8825->regmap, NAU8825_REG_ADC_RATE, &osr);
1271 osr &= NAU8825_ADC_SYNC_DOWN_MASK;
1272 if (nau8825_clock_check(nau8825, substream->stream,
1273 params_rate(params), osr)) {
1274 nau8825_sema_release(nau8825);
1277 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
1278 NAU8825_CLK_ADC_SRC_MASK,
1279 osr_adc_sel[osr].clk_src << NAU8825_CLK_ADC_SRC_SFT);
1282 /* make BCLK and LRC divde configuration if the codec as master. */
1283 regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, &ctrl_val);
1284 if (ctrl_val & NAU8825_I2S_MS_MASTER) {
1285 /* get the bclk and fs ratio */
1286 bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params);
1289 else if (bclk_fs <= 64)
1291 else if (bclk_fs <= 128)
1294 nau8825_sema_release(nau8825);
1297 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
1298 NAU8825_I2S_LRC_DIV_MASK | NAU8825_I2S_BLK_DIV_MASK,
1299 ((bclk_div + 1) << NAU8825_I2S_LRC_DIV_SFT) | bclk_div);
1302 switch (params_width(params)) {
1304 val_len |= NAU8825_I2S_DL_16;
1307 val_len |= NAU8825_I2S_DL_20;
1310 val_len |= NAU8825_I2S_DL_24;
1313 val_len |= NAU8825_I2S_DL_32;
1316 nau8825_sema_release(nau8825);
1320 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
1321 NAU8825_I2S_DL_MASK, val_len);
1323 /* Release the semaphore. */
1324 nau8825_sema_release(nau8825);
1329 static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
1331 struct snd_soc_codec *codec = codec_dai->codec;
1332 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
1333 unsigned int ctrl1_val = 0, ctrl2_val = 0;
1335 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1336 case SND_SOC_DAIFMT_CBM_CFM:
1337 ctrl2_val |= NAU8825_I2S_MS_MASTER;
1339 case SND_SOC_DAIFMT_CBS_CFS:
1345 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1346 case SND_SOC_DAIFMT_NB_NF:
1348 case SND_SOC_DAIFMT_IB_NF:
1349 ctrl1_val |= NAU8825_I2S_BP_INV;
1355 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1356 case SND_SOC_DAIFMT_I2S:
1357 ctrl1_val |= NAU8825_I2S_DF_I2S;
1359 case SND_SOC_DAIFMT_LEFT_J:
1360 ctrl1_val |= NAU8825_I2S_DF_LEFT;
1362 case SND_SOC_DAIFMT_RIGHT_J:
1363 ctrl1_val |= NAU8825_I2S_DF_RIGTH;
1365 case SND_SOC_DAIFMT_DSP_A:
1366 ctrl1_val |= NAU8825_I2S_DF_PCM_AB;
1368 case SND_SOC_DAIFMT_DSP_B:
1369 ctrl1_val |= NAU8825_I2S_DF_PCM_AB;
1370 ctrl1_val |= NAU8825_I2S_PCMB_EN;
1376 nau8825_sema_acquire(nau8825, 3 * HZ);
1378 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
1379 NAU8825_I2S_DL_MASK | NAU8825_I2S_DF_MASK |
1380 NAU8825_I2S_BP_MASK | NAU8825_I2S_PCMB_MASK,
1382 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
1383 NAU8825_I2S_MS_MASK, ctrl2_val);
1385 /* Release the semaphore. */
1386 nau8825_sema_release(nau8825);
1391 static const struct snd_soc_dai_ops nau8825_dai_ops = {
1392 .hw_params = nau8825_hw_params,
1393 .set_fmt = nau8825_set_dai_fmt,
1396 #define NAU8825_RATES SNDRV_PCM_RATE_8000_192000
1397 #define NAU8825_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
1398 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
1400 static struct snd_soc_dai_driver nau8825_dai = {
1401 .name = "nau8825-hifi",
1403 .stream_name = "Playback",
1406 .rates = NAU8825_RATES,
1407 .formats = NAU8825_FORMATS,
1410 .stream_name = "Capture",
1413 .rates = NAU8825_RATES,
1414 .formats = NAU8825_FORMATS,
1416 .ops = &nau8825_dai_ops,
1420 * nau8825_enable_jack_detect - Specify a jack for event reporting
1422 * @component: component to register the jack with
1423 * @jack: jack to use to report headset and button events on
1425 * After this function has been called the headset insert/remove and button
1426 * events will be routed to the given jack. Jack can be null to stop
1429 int nau8825_enable_jack_detect(struct snd_soc_codec *codec,
1430 struct snd_soc_jack *jack)
1432 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
1433 struct regmap *regmap = nau8825->regmap;
1435 nau8825->jack = jack;
1437 /* Ground HP Outputs[1:0], needed for headset auto detection
1438 * Enable Automatic Mic/Gnd switching reading on insert interrupt[6]
1440 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1441 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L,
1442 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
1446 EXPORT_SYMBOL_GPL(nau8825_enable_jack_detect);
1449 static bool nau8825_is_jack_inserted(struct regmap *regmap)
1451 bool active_high, is_high;
1454 regmap_read(regmap, NAU8825_REG_JACK_DET_CTRL, &jkdet);
1455 active_high = jkdet & NAU8825_JACK_POLARITY;
1456 regmap_read(regmap, NAU8825_REG_I2C_DEVICE_ID, &status);
1457 is_high = status & NAU8825_GPIO2JD1;
1458 /* return jack connection status according to jack insertion logic
1459 * active high or active low.
1461 return active_high == is_high;
1464 static void nau8825_restart_jack_detection(struct regmap *regmap)
1466 /* this will restart the entire jack detection process including MIC/GND
1467 * switching and create interrupts. We have to go from 0 to 1 and back
1470 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1471 NAU8825_JACK_DET_RESTART, NAU8825_JACK_DET_RESTART);
1472 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1473 NAU8825_JACK_DET_RESTART, 0);
1476 static void nau8825_int_status_clear_all(struct regmap *regmap)
1478 int active_irq, clear_irq, i;
1480 /* Reset the intrruption status from rightmost bit if the corres-
1481 * ponding irq event occurs.
1483 regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq);
1484 for (i = 0; i < NAU8825_REG_DATA_LEN; i++) {
1485 clear_irq = (0x1 << i);
1486 if (active_irq & clear_irq)
1487 regmap_write(regmap,
1488 NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq);
1492 static void nau8825_eject_jack(struct nau8825 *nau8825)
1494 struct snd_soc_dapm_context *dapm = nau8825->dapm;
1495 struct regmap *regmap = nau8825->regmap;
1497 /* Force to cancel the cross talk detection process */
1498 nau8825_xtalk_cancel(nau8825);
1500 snd_soc_dapm_disable_pin(dapm, "SAR");
1501 snd_soc_dapm_disable_pin(dapm, "MICBIAS");
1502 /* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */
1503 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1504 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0);
1505 /* ground HPL/HPR, MICGRND1/2 */
1506 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0xf, 0xf);
1508 snd_soc_dapm_sync(dapm);
1510 /* Clear all interruption status */
1511 nau8825_int_status_clear_all(regmap);
1513 /* Enable the insertion interruption, disable the ejection inter-
1514 * ruption, and then bypass de-bounce circuit.
1516 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL,
1517 NAU8825_IRQ_EJECT_DIS | NAU8825_IRQ_INSERT_DIS,
1518 NAU8825_IRQ_EJECT_DIS);
1519 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
1520 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN |
1521 NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_INSERT_EN,
1522 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN |
1523 NAU8825_IRQ_HEADSET_COMPLETE_EN);
1524 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1525 NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS);
1527 /* Disable ADC needed for interruptions at audo mode */
1528 regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
1529 NAU8825_ENABLE_ADC, 0);
1531 /* Close clock for jack type detection at manual mode */
1532 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0);
1535 /* Enable audo mode interruptions with internal clock. */
1536 static void nau8825_setup_auto_irq(struct nau8825 *nau8825)
1538 struct regmap *regmap = nau8825->regmap;
1540 /* Enable headset jack type detection complete interruption and
1541 * jack ejection interruption.
1543 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
1544 NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_EJECT_EN, 0);
1546 /* Enable internal VCO needed for interruptions */
1547 nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
1549 /* Enable ADC needed for interruptions */
1550 regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
1551 NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
1553 /* Chip needs one FSCLK cycle in order to generate interruptions,
1554 * as we cannot guarantee one will be provided by the system. Turning
1555 * master mode on then off enables us to generate that FSCLK cycle
1556 * with a minimum of contention on the clock bus.
1558 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
1559 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER);
1560 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
1561 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE);
1563 /* Not bypass de-bounce circuit */
1564 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1565 NAU8825_JACK_DET_DB_BYPASS, 0);
1567 /* Unmask all interruptions */
1568 regmap_write(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 0);
1570 /* Restart the jack detection process at auto mode */
1571 nau8825_restart_jack_detection(regmap);
1574 static int nau8825_button_decode(int value)
1578 /* The chip supports up to 8 buttons, but ALSA defines only 6 buttons */
1580 buttons |= SND_JACK_BTN_0;
1582 buttons |= SND_JACK_BTN_1;
1584 buttons |= SND_JACK_BTN_2;
1586 buttons |= SND_JACK_BTN_3;
1588 buttons |= SND_JACK_BTN_4;
1590 buttons |= SND_JACK_BTN_5;
1595 static int nau8825_jack_insert(struct nau8825 *nau8825)
1597 struct regmap *regmap = nau8825->regmap;
1598 struct snd_soc_dapm_context *dapm = nau8825->dapm;
1599 int jack_status_reg, mic_detected;
1602 regmap_read(regmap, NAU8825_REG_GENERAL_STATUS, &jack_status_reg);
1603 mic_detected = (jack_status_reg >> 10) & 3;
1604 /* The JKSLV and JKR2 all detected in high impedance headset */
1605 if (mic_detected == 0x3)
1606 nau8825->high_imped = true;
1608 nau8825->high_imped = false;
1610 switch (mic_detected) {
1613 type = SND_JACK_HEADPHONE;
1616 dev_dbg(nau8825->dev, "OMTP (micgnd1) mic connected\n");
1617 type = SND_JACK_HEADSET;
1619 /* Unground MICGND1 */
1620 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2,
1622 /* Attach 2kOhm Resistor from MICBIAS to MICGND1 */
1623 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1624 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1625 NAU8825_MICBIAS_JKR2);
1626 /* Attach SARADC to MICGND1 */
1627 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1628 NAU8825_SAR_INPUT_MASK,
1629 NAU8825_SAR_INPUT_JKR2);
1631 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
1632 snd_soc_dapm_force_enable_pin(dapm, "SAR");
1633 snd_soc_dapm_sync(dapm);
1636 dev_dbg(nau8825->dev, "CTIA (micgnd2) mic connected\n");
1637 type = SND_JACK_HEADSET;
1639 /* Unground MICGND2 */
1640 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2,
1642 /* Attach 2kOhm Resistor from MICBIAS to MICGND2 */
1643 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1644 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1645 NAU8825_MICBIAS_JKSLV);
1646 /* Attach SARADC to MICGND2 */
1647 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1648 NAU8825_SAR_INPUT_MASK,
1649 NAU8825_SAR_INPUT_JKSLV);
1651 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
1652 snd_soc_dapm_force_enable_pin(dapm, "SAR");
1653 snd_soc_dapm_sync(dapm);
1656 /* detect error case */
1657 dev_err(nau8825->dev, "detection error; disable mic function\n");
1658 type = SND_JACK_HEADPHONE;
1662 /* Leaving HPOL/R grounded after jack insert by default. They will be
1663 * ungrounded as part of the widget power up sequence at the beginning
1664 * of playback to reduce pop.
1669 #define NAU8825_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \
1670 SND_JACK_BTN_2 | SND_JACK_BTN_3)
1672 static irqreturn_t nau8825_interrupt(int irq, void *data)
1674 struct nau8825 *nau8825 = (struct nau8825 *)data;
1675 struct regmap *regmap = nau8825->regmap;
1676 int active_irq, clear_irq = 0, event = 0, event_mask = 0;
1678 if (regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq)) {
1679 dev_err(nau8825->dev, "failed to read irq status\n");
1683 if ((active_irq & NAU8825_JACK_EJECTION_IRQ_MASK) ==
1684 NAU8825_JACK_EJECTION_DETECTED) {
1686 nau8825_eject_jack(nau8825);
1687 event_mask |= SND_JACK_HEADSET;
1688 clear_irq = NAU8825_JACK_EJECTION_IRQ_MASK;
1689 } else if (active_irq & NAU8825_KEY_SHORT_PRESS_IRQ) {
1692 regmap_read(regmap, NAU8825_REG_INT_CLR_KEY_STATUS,
1695 /* upper 8 bits of the register are for short pressed keys,
1696 * lower 8 bits - for long pressed buttons
1698 nau8825->button_pressed = nau8825_button_decode(
1701 event |= nau8825->button_pressed;
1702 event_mask |= NAU8825_BUTTONS;
1703 clear_irq = NAU8825_KEY_SHORT_PRESS_IRQ;
1704 } else if (active_irq & NAU8825_KEY_RELEASE_IRQ) {
1705 event_mask = NAU8825_BUTTONS;
1706 clear_irq = NAU8825_KEY_RELEASE_IRQ;
1707 } else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) {
1708 if (nau8825_is_jack_inserted(regmap)) {
1709 event |= nau8825_jack_insert(nau8825);
1710 if (nau8825->xtalk_enable && !nau8825->high_imped) {
1711 /* Apply the cross talk suppression in the
1712 * headset without high impedance.
1714 if (!nau8825->xtalk_protect) {
1715 /* Raise protection for cross talk de-
1716 * tection if no protection before.
1717 * The driver has to cancel the pro-
1718 * cess and restore changes if process
1719 * is ongoing when ejection.
1722 nau8825->xtalk_protect = true;
1723 ret = nau8825_sema_acquire(nau8825, 0);
1725 nau8825->xtalk_protect = false;
1727 /* Startup cross talk detection process */
1728 if (nau8825->xtalk_protect) {
1729 nau8825->xtalk_state =
1730 NAU8825_XTALK_PREPARE;
1731 schedule_work(&nau8825->xtalk_work);
1734 /* The cross talk suppression shouldn't apply
1735 * in the headset with high impedance. Thus,
1736 * relieve the protection raised before.
1738 if (nau8825->xtalk_protect) {
1739 nau8825_sema_release(nau8825);
1740 nau8825->xtalk_protect = false;
1744 dev_warn(nau8825->dev, "Headset completion IRQ fired but no headset connected\n");
1745 nau8825_eject_jack(nau8825);
1748 event_mask |= SND_JACK_HEADSET;
1749 clear_irq = NAU8825_HEADSET_COMPLETION_IRQ;
1750 /* Record the interruption report event for driver to report
1751 * the event later. The jack report will delay until cross
1752 * talk detection process is done.
1754 if (nau8825->xtalk_state == NAU8825_XTALK_PREPARE) {
1755 nau8825->xtalk_event = event;
1756 nau8825->xtalk_event_mask = event_mask;
1758 } else if (active_irq & NAU8825_IMPEDANCE_MEAS_IRQ) {
1759 /* crosstalk detection enable and process on going */
1760 if (nau8825->xtalk_enable && nau8825->xtalk_protect)
1761 schedule_work(&nau8825->xtalk_work);
1762 clear_irq = NAU8825_IMPEDANCE_MEAS_IRQ;
1763 } else if ((active_irq & NAU8825_JACK_INSERTION_IRQ_MASK) ==
1764 NAU8825_JACK_INSERTION_DETECTED) {
1765 /* One more step to check GPIO status directly. Thus, the
1766 * driver can confirm the real insertion interruption because
1767 * the intrruption at manual mode has bypassed debounce
1768 * circuit which can get rid of unstable status.
1770 if (nau8825_is_jack_inserted(regmap)) {
1771 /* Turn off insertion interruption at manual mode */
1772 regmap_update_bits(regmap,
1773 NAU8825_REG_INTERRUPT_DIS_CTRL,
1774 NAU8825_IRQ_INSERT_DIS,
1775 NAU8825_IRQ_INSERT_DIS);
1776 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
1777 NAU8825_IRQ_INSERT_EN, NAU8825_IRQ_INSERT_EN);
1778 /* Enable interruption for jack type detection at audo
1779 * mode which can detect microphone and jack type.
1781 nau8825_setup_auto_irq(nau8825);
1786 clear_irq = active_irq;
1787 /* clears the rightmost interruption */
1788 regmap_write(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq);
1790 /* Delay jack report until cross talk detection is done. It can avoid
1791 * application to do playback preparation when cross talk detection
1792 * process is still working. Otherwise, the resource like clock and
1793 * power will be issued by them at the same time and conflict happens.
1795 if (event_mask && nau8825->xtalk_state == NAU8825_XTALK_DONE)
1796 snd_soc_jack_report(nau8825->jack, event, event_mask);
1801 static void nau8825_setup_buttons(struct nau8825 *nau8825)
1803 struct regmap *regmap = nau8825->regmap;
1805 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1806 NAU8825_SAR_TRACKING_GAIN_MASK,
1807 nau8825->sar_voltage << NAU8825_SAR_TRACKING_GAIN_SFT);
1808 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1809 NAU8825_SAR_COMPARE_TIME_MASK,
1810 nau8825->sar_compare_time << NAU8825_SAR_COMPARE_TIME_SFT);
1811 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1812 NAU8825_SAR_SAMPLING_TIME_MASK,
1813 nau8825->sar_sampling_time << NAU8825_SAR_SAMPLING_TIME_SFT);
1815 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
1816 NAU8825_KEYDET_LEVELS_NR_MASK,
1817 (nau8825->sar_threshold_num - 1) << NAU8825_KEYDET_LEVELS_NR_SFT);
1818 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
1819 NAU8825_KEYDET_HYSTERESIS_MASK,
1820 nau8825->sar_hysteresis << NAU8825_KEYDET_HYSTERESIS_SFT);
1821 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
1822 NAU8825_KEYDET_SHORTKEY_DEBOUNCE_MASK,
1823 nau8825->key_debounce << NAU8825_KEYDET_SHORTKEY_DEBOUNCE_SFT);
1825 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_1,
1826 (nau8825->sar_threshold[0] << 8) | nau8825->sar_threshold[1]);
1827 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_2,
1828 (nau8825->sar_threshold[2] << 8) | nau8825->sar_threshold[3]);
1829 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_3,
1830 (nau8825->sar_threshold[4] << 8) | nau8825->sar_threshold[5]);
1831 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_4,
1832 (nau8825->sar_threshold[6] << 8) | nau8825->sar_threshold[7]);
1834 /* Enable short press and release interruptions */
1835 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
1836 NAU8825_IRQ_KEY_SHORT_PRESS_EN | NAU8825_IRQ_KEY_RELEASE_EN,
1840 static void nau8825_init_regs(struct nau8825 *nau8825)
1842 struct regmap *regmap = nau8825->regmap;
1844 /* Latch IIC LSB value */
1845 regmap_write(regmap, NAU8825_REG_IIC_ADDR_SET, 0x0001);
1846 /* Enable Bias/Vmid */
1847 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
1848 NAU8825_BIAS_VMID, NAU8825_BIAS_VMID);
1849 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
1850 NAU8825_GLOBAL_BIAS_EN, NAU8825_GLOBAL_BIAS_EN);
1853 regmap_update_bits(regmap, NAU8825_REG_BIAS_ADJ,
1854 NAU8825_BIAS_VMID_SEL_MASK,
1855 nau8825->vref_impedance << NAU8825_BIAS_VMID_SEL_SFT);
1856 /* Disable Boost Driver, Automatic Short circuit protection enable */
1857 regmap_update_bits(regmap, NAU8825_REG_BOOST,
1858 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS |
1859 NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN,
1860 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS |
1861 NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN);
1863 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
1864 NAU8825_JKDET_OUTPUT_EN,
1865 nau8825->jkdet_enable ? 0 : NAU8825_JKDET_OUTPUT_EN);
1866 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
1867 NAU8825_JKDET_PULL_EN,
1868 nau8825->jkdet_pull_enable ? 0 : NAU8825_JKDET_PULL_EN);
1869 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
1870 NAU8825_JKDET_PULL_UP,
1871 nau8825->jkdet_pull_up ? NAU8825_JKDET_PULL_UP : 0);
1872 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1873 NAU8825_JACK_POLARITY,
1874 /* jkdet_polarity - 1 is for active-low */
1875 nau8825->jkdet_polarity ? 0 : NAU8825_JACK_POLARITY);
1877 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1878 NAU8825_JACK_INSERT_DEBOUNCE_MASK,
1879 nau8825->jack_insert_debounce << NAU8825_JACK_INSERT_DEBOUNCE_SFT);
1880 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1881 NAU8825_JACK_EJECT_DEBOUNCE_MASK,
1882 nau8825->jack_eject_debounce << NAU8825_JACK_EJECT_DEBOUNCE_SFT);
1884 /* Mask unneeded IRQs: 1 - disable, 0 - enable */
1885 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 0x7ff, 0x7ff);
1887 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1888 NAU8825_MICBIAS_VOLTAGE_MASK, nau8825->micbias_voltage);
1890 if (nau8825->sar_threshold_num)
1891 nau8825_setup_buttons(nau8825);
1893 /* Default oversampling/decimations settings are unusable
1894 * (audible hiss). Set it to something better.
1896 regmap_update_bits(regmap, NAU8825_REG_ADC_RATE,
1897 NAU8825_ADC_SYNC_DOWN_MASK | NAU8825_ADC_SINC4_EN,
1898 NAU8825_ADC_SYNC_DOWN_64);
1899 regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1,
1900 NAU8825_DAC_OVERSAMPLE_MASK, NAU8825_DAC_OVERSAMPLE_64);
1901 /* Disable DACR/L power */
1902 regmap_update_bits(regmap, NAU8825_REG_CHARGE_PUMP,
1903 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
1904 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
1905 /* Enable TESTDAC. This sets the analog DAC inputs to a '0' input
1906 * signal to avoid any glitches due to power up transients in both
1907 * the analog and digital DAC circuit.
1909 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
1910 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
1912 regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1,
1913 NAU8825_DAC_CLIP_OFF, NAU8825_DAC_CLIP_OFF);
1915 /* Class AB bias current to 2x, DAC Capacitor enable MSB/LSB */
1916 regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_2,
1917 NAU8825_HP_NON_CLASSG_CURRENT_2xADJ |
1918 NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB,
1919 NAU8825_HP_NON_CLASSG_CURRENT_2xADJ |
1920 NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB);
1921 /* Class G timer 64ms */
1922 regmap_update_bits(regmap, NAU8825_REG_CLASSG_CTRL,
1923 NAU8825_CLASSG_TIMER_MASK,
1924 0x20 << NAU8825_CLASSG_TIMER_SFT);
1925 /* DAC clock delay 2ns, VREF */
1926 regmap_update_bits(regmap, NAU8825_REG_RDAC,
1927 NAU8825_RDAC_CLK_DELAY_MASK | NAU8825_RDAC_VREF_MASK,
1928 (0x2 << NAU8825_RDAC_CLK_DELAY_SFT) |
1929 (0x3 << NAU8825_RDAC_VREF_SFT));
1930 /* Config L/R channel */
1931 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL,
1932 NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_L);
1933 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL,
1934 NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_R);
1935 /* Disable short Frame Sync detection logic */
1936 regmap_update_bits(regmap, NAU8825_REG_LEFT_TIME_SLOT,
1937 NAU8825_DIS_FS_SHORT_DET, NAU8825_DIS_FS_SHORT_DET);
1940 static const struct regmap_config nau8825_regmap_config = {
1941 .val_bits = NAU8825_REG_DATA_LEN,
1942 .reg_bits = NAU8825_REG_ADDR_LEN,
1944 .max_register = NAU8825_REG_MAX,
1945 .readable_reg = nau8825_readable_reg,
1946 .writeable_reg = nau8825_writeable_reg,
1947 .volatile_reg = nau8825_volatile_reg,
1949 .cache_type = REGCACHE_RBTREE,
1950 .reg_defaults = nau8825_reg_defaults,
1951 .num_reg_defaults = ARRAY_SIZE(nau8825_reg_defaults),
1954 static int nau8825_codec_probe(struct snd_soc_codec *codec)
1956 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
1957 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
1959 nau8825->dapm = dapm;
1964 static int nau8825_codec_remove(struct snd_soc_codec *codec)
1966 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
1968 /* Cancel and reset cross tak suppresstion detection funciton */
1969 nau8825_xtalk_cancel(nau8825);
1975 * nau8825_calc_fll_param - Calculate FLL parameters.
1976 * @fll_in: external clock provided to codec.
1977 * @fs: sampling rate.
1978 * @fll_param: Pointer to structure of FLL parameters.
1980 * Calculate FLL parameters to configure codec.
1982 * Returns 0 for success or negative error code.
1984 static int nau8825_calc_fll_param(unsigned int fll_in, unsigned int fs,
1985 struct nau8825_fll *fll_param)
1988 unsigned int fref, i, fvco_sel;
1990 /* Ensure the reference clock frequency (FREF) is <= 13.5MHz by dividing
1991 * freq_in by 1, 2, 4, or 8 using FLL pre-scalar.
1992 * FREF = freq_in / NAU8825_FLL_REF_DIV_MASK
1994 for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) {
1995 fref = fll_in / fll_pre_scalar[i].param;
1996 if (fref <= NAU_FREF_MAX)
1999 if (i == ARRAY_SIZE(fll_pre_scalar))
2001 fll_param->clk_ref_div = fll_pre_scalar[i].val;
2003 /* Choose the FLL ratio based on FREF */
2004 for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) {
2005 if (fref >= fll_ratio[i].param)
2008 if (i == ARRAY_SIZE(fll_ratio))
2010 fll_param->ratio = fll_ratio[i].val;
2012 /* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs.
2013 * FDCO must be within the 90MHz - 124MHz or the FFL cannot be
2014 * guaranteed across the full range of operation.
2015 * FDCO = freq_out * 2 * mclk_src_scaling
2018 fvco_sel = ARRAY_SIZE(mclk_src_scaling);
2019 for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
2020 fvco = 256 * fs * 2 * mclk_src_scaling[i].param;
2021 if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX &&
2027 if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel)
2029 fll_param->mclk_src = mclk_src_scaling[fvco_sel].val;
2031 /* Calculate the FLL 10-bit integer input and the FLL 16-bit fractional
2032 * input based on FDCO, FREF and FLL ratio.
2034 fvco = div_u64(fvco_max << 16, fref * fll_param->ratio);
2035 fll_param->fll_int = (fvco >> 16) & 0x3FF;
2036 fll_param->fll_frac = fvco & 0xFFFF;
2040 static void nau8825_fll_apply(struct nau8825 *nau8825,
2041 struct nau8825_fll *fll_param)
2043 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
2044 NAU8825_CLK_SRC_MASK | NAU8825_CLK_MCLK_SRC_MASK,
2045 NAU8825_CLK_SRC_MCLK | fll_param->mclk_src);
2046 /* Make DSP operate at high speed for better performance. */
2047 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1,
2048 NAU8825_FLL_RATIO_MASK | NAU8825_ICTRL_LATCH_MASK,
2049 fll_param->ratio | (0x6 << NAU8825_ICTRL_LATCH_SFT));
2050 /* FLL 16-bit fractional input */
2051 regmap_write(nau8825->regmap, NAU8825_REG_FLL2, fll_param->fll_frac);
2052 /* FLL 10-bit integer input */
2053 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL3,
2054 NAU8825_FLL_INTEGER_MASK, fll_param->fll_int);
2055 /* FLL pre-scaler */
2056 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL4,
2057 NAU8825_FLL_REF_DIV_MASK,
2058 fll_param->clk_ref_div << NAU8825_FLL_REF_DIV_SFT);
2059 /* select divided VCO input */
2060 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
2061 NAU8825_FLL_CLK_SW_MASK, NAU8825_FLL_CLK_SW_REF);
2062 /* Disable free-running mode */
2063 regmap_update_bits(nau8825->regmap,
2064 NAU8825_REG_FLL6, NAU8825_DCO_EN, 0);
2065 if (fll_param->fll_frac) {
2066 /* set FLL loop filter enable and cutoff frequency at 500Khz */
2067 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
2068 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
2069 NAU8825_FLL_FTR_SW_MASK,
2070 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
2071 NAU8825_FLL_FTR_SW_FILTER);
2072 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
2073 NAU8825_SDM_EN | NAU8825_CUTOFF500,
2074 NAU8825_SDM_EN | NAU8825_CUTOFF500);
2076 /* disable FLL loop filter and cutoff frequency */
2077 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
2078 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
2079 NAU8825_FLL_FTR_SW_MASK, NAU8825_FLL_FTR_SW_ACCU);
2080 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
2081 NAU8825_SDM_EN | NAU8825_CUTOFF500, 0);
2085 /* freq_out must be 256*Fs in order to achieve the best performance */
2086 static int nau8825_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
2087 unsigned int freq_in, unsigned int freq_out)
2089 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
2090 struct nau8825_fll fll_param;
2093 fs = freq_out / 256;
2094 ret = nau8825_calc_fll_param(freq_in, fs, &fll_param);
2096 dev_err(codec->dev, "Unsupported input clock %d\n", freq_in);
2099 dev_dbg(codec->dev, "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n",
2100 fll_param.mclk_src, fll_param.ratio, fll_param.fll_frac,
2101 fll_param.fll_int, fll_param.clk_ref_div);
2103 nau8825_fll_apply(nau8825, &fll_param);
2105 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
2106 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
2110 static int nau8825_mclk_prepare(struct nau8825 *nau8825, unsigned int freq)
2114 nau8825->mclk = devm_clk_get(nau8825->dev, "mclk");
2115 if (IS_ERR(nau8825->mclk)) {
2116 dev_info(nau8825->dev, "No 'mclk' clock found, assume MCLK is managed externally");
2120 if (!nau8825->mclk_freq) {
2121 ret = clk_prepare_enable(nau8825->mclk);
2123 dev_err(nau8825->dev, "Unable to prepare codec mclk\n");
2128 if (nau8825->mclk_freq != freq) {
2129 freq = clk_round_rate(nau8825->mclk, freq);
2130 ret = clk_set_rate(nau8825->mclk, freq);
2132 dev_err(nau8825->dev, "Unable to set mclk rate\n");
2135 nau8825->mclk_freq = freq;
2141 static void nau8825_configure_mclk_as_sysclk(struct regmap *regmap)
2143 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2144 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_MCLK);
2145 regmap_update_bits(regmap, NAU8825_REG_FLL6,
2147 /* Make DSP operate as default setting for power saving. */
2148 regmap_update_bits(regmap, NAU8825_REG_FLL1,
2149 NAU8825_ICTRL_LATCH_MASK, 0);
2152 static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id,
2155 struct regmap *regmap = nau8825->regmap;
2159 case NAU8825_CLK_DIS:
2160 /* Clock provided externally and disable internal VCO clock */
2161 nau8825_configure_mclk_as_sysclk(regmap);
2162 if (nau8825->mclk_freq) {
2163 clk_disable_unprepare(nau8825->mclk);
2164 nau8825->mclk_freq = 0;
2168 case NAU8825_CLK_MCLK:
2169 /* Acquire the semaphore to synchronize the playback and
2170 * interrupt handler. In order to avoid the playback inter-
2171 * fered by cross talk process, the driver make the playback
2172 * preparation halted until cross talk process finish.
2174 nau8825_sema_acquire(nau8825, 3 * HZ);
2175 nau8825_configure_mclk_as_sysclk(regmap);
2176 /* MCLK not changed by clock tree */
2177 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2178 NAU8825_CLK_MCLK_SRC_MASK, 0);
2179 /* Release the semaphore. */
2180 nau8825_sema_release(nau8825);
2182 ret = nau8825_mclk_prepare(nau8825, freq);
2187 case NAU8825_CLK_INTERNAL:
2188 if (nau8825_is_jack_inserted(nau8825->regmap)) {
2189 regmap_update_bits(regmap, NAU8825_REG_FLL6,
2190 NAU8825_DCO_EN, NAU8825_DCO_EN);
2191 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2192 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
2193 /* Decrease the VCO frequency and make DSP operate
2194 * as default setting for power saving.
2196 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2197 NAU8825_CLK_MCLK_SRC_MASK, 0xf);
2198 regmap_update_bits(regmap, NAU8825_REG_FLL1,
2199 NAU8825_ICTRL_LATCH_MASK |
2200 NAU8825_FLL_RATIO_MASK, 0x10);
2201 regmap_update_bits(regmap, NAU8825_REG_FLL6,
2202 NAU8825_SDM_EN, NAU8825_SDM_EN);
2204 /* The clock turns off intentionally for power saving
2205 * when no headset connected.
2207 nau8825_configure_mclk_as_sysclk(regmap);
2208 dev_warn(nau8825->dev, "Disable clock for power saving when no headset connected\n");
2210 if (nau8825->mclk_freq) {
2211 clk_disable_unprepare(nau8825->mclk);
2212 nau8825->mclk_freq = 0;
2216 case NAU8825_CLK_FLL_MCLK:
2217 /* Acquire the semaphore to synchronize the playback and
2218 * interrupt handler. In order to avoid the playback inter-
2219 * fered by cross talk process, the driver make the playback
2220 * preparation halted until cross talk process finish.
2222 nau8825_sema_acquire(nau8825, 3 * HZ);
2223 /* Higher FLL reference input frequency can only set lower
2224 * gain error, such as 0000 for input reference from MCLK
2227 regmap_update_bits(regmap, NAU8825_REG_FLL3,
2228 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK,
2229 NAU8825_FLL_CLK_SRC_MCLK | 0);
2230 /* Release the semaphore. */
2231 nau8825_sema_release(nau8825);
2233 ret = nau8825_mclk_prepare(nau8825, freq);
2238 case NAU8825_CLK_FLL_BLK:
2239 /* Acquire the semaphore to synchronize the playback and
2240 * interrupt handler. In order to avoid the playback inter-
2241 * fered by cross talk process, the driver make the playback
2242 * preparation halted until cross talk process finish.
2244 nau8825_sema_acquire(nau8825, 3 * HZ);
2245 /* If FLL reference input is from low frequency source,
2246 * higher error gain can apply such as 0xf which has
2247 * the most sensitive gain error correction threshold,
2248 * Therefore, FLL has the most accurate DCO to
2251 regmap_update_bits(regmap, NAU8825_REG_FLL3,
2252 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK,
2253 NAU8825_FLL_CLK_SRC_BLK |
2254 (0xf << NAU8825_GAIN_ERR_SFT));
2255 /* Release the semaphore. */
2256 nau8825_sema_release(nau8825);
2258 if (nau8825->mclk_freq) {
2259 clk_disable_unprepare(nau8825->mclk);
2260 nau8825->mclk_freq = 0;
2264 case NAU8825_CLK_FLL_FS:
2265 /* Acquire the semaphore to synchronize the playback and
2266 * interrupt handler. In order to avoid the playback inter-
2267 * fered by cross talk process, the driver make the playback
2268 * preparation halted until cross talk process finish.
2270 nau8825_sema_acquire(nau8825, 3 * HZ);
2271 /* If FLL reference input is from low frequency source,
2272 * higher error gain can apply such as 0xf which has
2273 * the most sensitive gain error correction threshold,
2274 * Therefore, FLL has the most accurate DCO to
2277 regmap_update_bits(regmap, NAU8825_REG_FLL3,
2278 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK,
2279 NAU8825_FLL_CLK_SRC_FS |
2280 (0xf << NAU8825_GAIN_ERR_SFT));
2281 /* Release the semaphore. */
2282 nau8825_sema_release(nau8825);
2284 if (nau8825->mclk_freq) {
2285 clk_disable_unprepare(nau8825->mclk);
2286 nau8825->mclk_freq = 0;
2291 dev_err(nau8825->dev, "Invalid clock id (%d)\n", clk_id);
2295 dev_dbg(nau8825->dev, "Sysclk is %dHz and clock id is %d\n", freq,
2300 static int nau8825_set_sysclk(struct snd_soc_codec *codec, int clk_id,
2301 int source, unsigned int freq, int dir)
2303 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
2305 return nau8825_configure_sysclk(nau8825, clk_id, freq);
2308 static int nau8825_resume_setup(struct nau8825 *nau8825)
2310 struct regmap *regmap = nau8825->regmap;
2312 /* Close clock when jack type detection at manual mode */
2313 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0);
2315 /* Clear all interruption status */
2316 nau8825_int_status_clear_all(regmap);
2318 /* Enable both insertion and ejection interruptions, and then
2319 * bypass de-bounce circuit.
2321 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
2322 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN |
2323 NAU8825_IRQ_EJECT_EN | NAU8825_IRQ_INSERT_EN,
2324 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN);
2325 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
2326 NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS);
2327 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL,
2328 NAU8825_IRQ_INSERT_DIS | NAU8825_IRQ_EJECT_DIS, 0);
2333 static int nau8825_set_bias_level(struct snd_soc_codec *codec,
2334 enum snd_soc_bias_level level)
2336 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
2340 case SND_SOC_BIAS_ON:
2343 case SND_SOC_BIAS_PREPARE:
2346 case SND_SOC_BIAS_STANDBY:
2347 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
2348 if (nau8825->mclk_freq) {
2349 ret = clk_prepare_enable(nau8825->mclk);
2351 dev_err(nau8825->dev, "Unable to prepare codec mclk\n");
2355 /* Setup codec configuration after resume */
2356 nau8825_resume_setup(nau8825);
2360 case SND_SOC_BIAS_OFF:
2361 /* Reset the configuration of jack type for detection */
2362 /* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */
2363 regmap_update_bits(nau8825->regmap, NAU8825_REG_MIC_BIAS,
2364 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0);
2365 /* ground HPL/HPR, MICGRND1/2 */
2366 regmap_update_bits(nau8825->regmap,
2367 NAU8825_REG_HSD_CTRL, 0xf, 0xf);
2368 /* Cancel and reset cross talk detection funciton */
2369 nau8825_xtalk_cancel(nau8825);
2370 /* Turn off all interruptions before system shutdown. Keep the
2371 * interruption quiet before resume setup completes.
2373 regmap_write(nau8825->regmap,
2374 NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff);
2375 /* Disable ADC needed for interruptions at audo mode */
2376 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
2377 NAU8825_ENABLE_ADC, 0);
2378 if (nau8825->mclk_freq)
2379 clk_disable_unprepare(nau8825->mclk);
2385 static int __maybe_unused nau8825_suspend(struct snd_soc_codec *codec)
2387 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
2389 disable_irq(nau8825->irq);
2390 snd_soc_codec_force_bias_level(codec, SND_SOC_BIAS_OFF);
2391 /* Power down codec power; don't suppoet button wakeup */
2392 snd_soc_dapm_disable_pin(nau8825->dapm, "SAR");
2393 snd_soc_dapm_disable_pin(nau8825->dapm, "MICBIAS");
2394 snd_soc_dapm_sync(nau8825->dapm);
2395 regcache_cache_only(nau8825->regmap, true);
2396 regcache_mark_dirty(nau8825->regmap);
2401 static int __maybe_unused nau8825_resume(struct snd_soc_codec *codec)
2403 struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
2406 regcache_cache_only(nau8825->regmap, false);
2407 regcache_sync(nau8825->regmap);
2408 nau8825->xtalk_protect = true;
2409 ret = nau8825_sema_acquire(nau8825, 0);
2411 nau8825->xtalk_protect = false;
2412 enable_irq(nau8825->irq);
2417 static const struct snd_soc_codec_driver nau8825_codec_driver = {
2418 .probe = nau8825_codec_probe,
2419 .remove = nau8825_codec_remove,
2420 .set_sysclk = nau8825_set_sysclk,
2421 .set_pll = nau8825_set_pll,
2422 .set_bias_level = nau8825_set_bias_level,
2423 .suspend_bias_off = true,
2424 .suspend = nau8825_suspend,
2425 .resume = nau8825_resume,
2427 .component_driver = {
2428 .controls = nau8825_controls,
2429 .num_controls = ARRAY_SIZE(nau8825_controls),
2430 .dapm_widgets = nau8825_dapm_widgets,
2431 .num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets),
2432 .dapm_routes = nau8825_dapm_routes,
2433 .num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes),
2437 static void nau8825_reset_chip(struct regmap *regmap)
2439 regmap_write(regmap, NAU8825_REG_RESET, 0x00);
2440 regmap_write(regmap, NAU8825_REG_RESET, 0x00);
2443 static void nau8825_print_device_properties(struct nau8825 *nau8825)
2446 struct device *dev = nau8825->dev;
2448 dev_dbg(dev, "jkdet-enable: %d\n", nau8825->jkdet_enable);
2449 dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8825->jkdet_pull_enable);
2450 dev_dbg(dev, "jkdet-pull-up: %d\n", nau8825->jkdet_pull_up);
2451 dev_dbg(dev, "jkdet-polarity: %d\n", nau8825->jkdet_polarity);
2452 dev_dbg(dev, "micbias-voltage: %d\n", nau8825->micbias_voltage);
2453 dev_dbg(dev, "vref-impedance: %d\n", nau8825->vref_impedance);
2455 dev_dbg(dev, "sar-threshold-num: %d\n", nau8825->sar_threshold_num);
2456 for (i = 0; i < nau8825->sar_threshold_num; i++)
2457 dev_dbg(dev, "sar-threshold[%d]=%d\n", i,
2458 nau8825->sar_threshold[i]);
2460 dev_dbg(dev, "sar-hysteresis: %d\n", nau8825->sar_hysteresis);
2461 dev_dbg(dev, "sar-voltage: %d\n", nau8825->sar_voltage);
2462 dev_dbg(dev, "sar-compare-time: %d\n", nau8825->sar_compare_time);
2463 dev_dbg(dev, "sar-sampling-time: %d\n", nau8825->sar_sampling_time);
2464 dev_dbg(dev, "short-key-debounce: %d\n", nau8825->key_debounce);
2465 dev_dbg(dev, "jack-insert-debounce: %d\n",
2466 nau8825->jack_insert_debounce);
2467 dev_dbg(dev, "jack-eject-debounce: %d\n",
2468 nau8825->jack_eject_debounce);
2469 dev_dbg(dev, "crosstalk-enable: %d\n",
2470 nau8825->xtalk_enable);
2473 static int nau8825_read_device_properties(struct device *dev,
2474 struct nau8825 *nau8825) {
2477 nau8825->jkdet_enable = device_property_read_bool(dev,
2478 "nuvoton,jkdet-enable");
2479 nau8825->jkdet_pull_enable = device_property_read_bool(dev,
2480 "nuvoton,jkdet-pull-enable");
2481 nau8825->jkdet_pull_up = device_property_read_bool(dev,
2482 "nuvoton,jkdet-pull-up");
2483 ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity",
2484 &nau8825->jkdet_polarity);
2486 nau8825->jkdet_polarity = 1;
2487 ret = device_property_read_u32(dev, "nuvoton,micbias-voltage",
2488 &nau8825->micbias_voltage);
2490 nau8825->micbias_voltage = 6;
2491 ret = device_property_read_u32(dev, "nuvoton,vref-impedance",
2492 &nau8825->vref_impedance);
2494 nau8825->vref_impedance = 2;
2495 ret = device_property_read_u32(dev, "nuvoton,sar-threshold-num",
2496 &nau8825->sar_threshold_num);
2498 nau8825->sar_threshold_num = 4;
2499 ret = device_property_read_u32_array(dev, "nuvoton,sar-threshold",
2500 nau8825->sar_threshold, nau8825->sar_threshold_num);
2502 nau8825->sar_threshold[0] = 0x08;
2503 nau8825->sar_threshold[1] = 0x12;
2504 nau8825->sar_threshold[2] = 0x26;
2505 nau8825->sar_threshold[3] = 0x73;
2507 ret = device_property_read_u32(dev, "nuvoton,sar-hysteresis",
2508 &nau8825->sar_hysteresis);
2510 nau8825->sar_hysteresis = 0;
2511 ret = device_property_read_u32(dev, "nuvoton,sar-voltage",
2512 &nau8825->sar_voltage);
2514 nau8825->sar_voltage = 6;
2515 ret = device_property_read_u32(dev, "nuvoton,sar-compare-time",
2516 &nau8825->sar_compare_time);
2518 nau8825->sar_compare_time = 1;
2519 ret = device_property_read_u32(dev, "nuvoton,sar-sampling-time",
2520 &nau8825->sar_sampling_time);
2522 nau8825->sar_sampling_time = 1;
2523 ret = device_property_read_u32(dev, "nuvoton,short-key-debounce",
2524 &nau8825->key_debounce);
2526 nau8825->key_debounce = 3;
2527 ret = device_property_read_u32(dev, "nuvoton,jack-insert-debounce",
2528 &nau8825->jack_insert_debounce);
2530 nau8825->jack_insert_debounce = 7;
2531 ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce",
2532 &nau8825->jack_eject_debounce);
2534 nau8825->jack_eject_debounce = 0;
2535 nau8825->xtalk_enable = device_property_read_bool(dev,
2536 "nuvoton,crosstalk-enable");
2538 nau8825->mclk = devm_clk_get(dev, "mclk");
2539 if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) {
2540 return -EPROBE_DEFER;
2541 } else if (PTR_ERR(nau8825->mclk) == -ENOENT) {
2542 /* The MCLK is managed externally or not used at all */
2543 nau8825->mclk = NULL;
2544 dev_info(dev, "No 'mclk' clock found, assume MCLK is managed externally");
2545 } else if (IS_ERR(nau8825->mclk)) {
2552 static int nau8825_setup_irq(struct nau8825 *nau8825)
2556 ret = devm_request_threaded_irq(nau8825->dev, nau8825->irq, NULL,
2557 nau8825_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
2558 "nau8825", nau8825);
2561 dev_err(nau8825->dev, "Cannot request irq %d (%d)\n",
2569 static int nau8825_i2c_probe(struct i2c_client *i2c,
2570 const struct i2c_device_id *id)
2572 struct device *dev = &i2c->dev;
2573 struct nau8825 *nau8825 = dev_get_platdata(&i2c->dev);
2577 nau8825 = devm_kzalloc(dev, sizeof(*nau8825), GFP_KERNEL);
2580 ret = nau8825_read_device_properties(dev, nau8825);
2585 i2c_set_clientdata(i2c, nau8825);
2587 nau8825->regmap = devm_regmap_init_i2c(i2c, &nau8825_regmap_config);
2588 if (IS_ERR(nau8825->regmap))
2589 return PTR_ERR(nau8825->regmap);
2591 nau8825->irq = i2c->irq;
2592 /* Initiate parameters, semaphore and work queue which are needed in
2593 * cross talk suppression measurment function.
2595 nau8825->xtalk_state = NAU8825_XTALK_DONE;
2596 nau8825->xtalk_protect = false;
2597 nau8825->xtalk_baktab_initialized = false;
2598 sema_init(&nau8825->xtalk_sem, 1);
2599 INIT_WORK(&nau8825->xtalk_work, nau8825_xtalk_work);
2601 nau8825_print_device_properties(nau8825);
2603 nau8825_reset_chip(nau8825->regmap);
2604 ret = regmap_read(nau8825->regmap, NAU8825_REG_I2C_DEVICE_ID, &value);
2606 dev_err(dev, "Failed to read device id from the NAU8825: %d\n",
2610 if ((value & NAU8825_SOFTWARE_ID_MASK) !=
2611 NAU8825_SOFTWARE_ID_NAU8825) {
2612 dev_err(dev, "Not a NAU8825 chip\n");
2616 nau8825_init_regs(nau8825);
2619 nau8825_setup_irq(nau8825);
2621 return snd_soc_register_codec(&i2c->dev, &nau8825_codec_driver,
2625 static int nau8825_i2c_remove(struct i2c_client *client)
2627 snd_soc_unregister_codec(&client->dev);
2631 static const struct i2c_device_id nau8825_i2c_ids[] = {
2635 MODULE_DEVICE_TABLE(i2c, nau8825_i2c_ids);
2638 static const struct of_device_id nau8825_of_ids[] = {
2639 { .compatible = "nuvoton,nau8825", },
2642 MODULE_DEVICE_TABLE(of, nau8825_of_ids);
2646 static const struct acpi_device_id nau8825_acpi_match[] = {
2650 MODULE_DEVICE_TABLE(acpi, nau8825_acpi_match);
2653 static struct i2c_driver nau8825_driver = {
2656 .of_match_table = of_match_ptr(nau8825_of_ids),
2657 .acpi_match_table = ACPI_PTR(nau8825_acpi_match),
2659 .probe = nau8825_i2c_probe,
2660 .remove = nau8825_i2c_remove,
2661 .id_table = nau8825_i2c_ids,
2663 module_i2c_driver(nau8825_driver);
2665 MODULE_DESCRIPTION("ASoC nau8825 driver");
2666 MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>");
2667 MODULE_LICENSE("GPL");