1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Nuvoton NAU8825 audio codec driver
4 *
5 * Copyright 2015 Google Chromium project.
6 * Author: Anatol Pomozov <anatol@chromium.org>
7 * Copyright 2015 Nuvoton Technology Corp.
8 * Co-author: Meng-Huang Kuo <mhkuo@nuvoton.com>
9 */
10
11 #include <linux/module.h>
12 #include <linux/delay.h>
13 #include <linux/init.h>
14 #include <linux/int_log.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>
22
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>
30
31
32 #include "nau8825.h"
33
34
35 #define NUVOTON_CODEC_DAI "nau8825-hifi"
36
37 #define NAU_FREF_MAX 13500000
38 #define NAU_FVCO_MAX 124000000
39 #define NAU_FVCO_MIN 90000000
40
41 /* cross talk suppression detection */
42 #define GAIN_AUGMENT 22500
43 #define SIDETONE_BASE 207000
44
45 /* the maximum frequency of CLK_ADC and CLK_DAC */
46 #define CLK_DA_AD_MAX 6144000
47
48 static int nau8825_configure_sysclk(struct nau8825 *nau8825,
49 int clk_id, unsigned int freq);
50 static bool nau8825_is_jack_inserted(struct regmap *regmap);
51
52 struct nau8825_fll {
53 int mclk_src;
54 int ratio;
55 int fll_frac;
56 int fll_frac_num;
57 int fll_int;
58 int clk_ref_div;
59 };
60
61 struct nau8825_fll_attr {
62 unsigned int param;
63 unsigned int val;
64 };
65
66 /* scaling for mclk from sysclk_src output */
67 static const struct nau8825_fll_attr mclk_src_scaling[] = {
68 { 1, 0x0 },
69 { 2, 0x2 },
70 { 4, 0x3 },
71 { 8, 0x4 },
72 { 16, 0x5 },
73 { 32, 0x6 },
74 { 3, 0x7 },
75 { 6, 0xa },
76 { 12, 0xb },
77 { 24, 0xc },
78 { 48, 0xd },
79 { 96, 0xe },
80 { 5, 0xf },
81 };
82
83 /* ratio for input clk freq */
84 static const struct nau8825_fll_attr fll_ratio[] = {
85 { 512000, 0x01 },
86 { 256000, 0x02 },
87 { 128000, 0x04 },
88 { 64000, 0x08 },
89 { 32000, 0x10 },
90 { 8000, 0x20 },
91 { 4000, 0x40 },
92 };
93
94 static const struct nau8825_fll_attr fll_pre_scalar[] = {
95 { 1, 0x0 },
96 { 2, 0x1 },
97 { 4, 0x2 },
98 { 8, 0x3 },
99 };
100
101 /* over sampling rate */
102 struct nau8825_osr_attr {
103 unsigned int osr;
104 unsigned int clk_src;
105 };
106
107 static const struct nau8825_osr_attr osr_dac_sel[] = {
108 { 64, 2 }, /* OSR 64, SRC 1/4 */
109 { 256, 0 }, /* OSR 256, SRC 1 */
110 { 128, 1 }, /* OSR 128, SRC 1/2 */
111 { 0, 0 },
112 { 32, 3 }, /* OSR 32, SRC 1/8 */
113 };
114
115 static const struct nau8825_osr_attr osr_adc_sel[] = {
116 { 32, 3 }, /* OSR 32, SRC 1/8 */
117 { 64, 2 }, /* OSR 64, SRC 1/4 */
118 { 128, 1 }, /* OSR 128, SRC 1/2 */
119 { 256, 0 }, /* OSR 256, SRC 1 */
120 };
121
122 static const struct reg_default nau8825_reg_defaults[] = {
123 { NAU8825_REG_ENA_CTRL, 0x00ff },
124 { NAU8825_REG_IIC_ADDR_SET, 0x0 },
125 { NAU8825_REG_CLK_DIVIDER, 0x0050 },
126 { NAU8825_REG_FLL1, 0x0 },
127 { NAU8825_REG_FLL2, 0x3126 },
128 { NAU8825_REG_FLL3, 0x0008 },
129 { NAU8825_REG_FLL4, 0x0010 },
130 { NAU8825_REG_FLL5, 0x0 },
131 { NAU8825_REG_FLL6, 0x6000 },
132 { NAU8825_REG_FLL_VCO_RSV, 0xf13c },
133 { NAU8825_REG_HSD_CTRL, 0x000c },
134 { NAU8825_REG_JACK_DET_CTRL, 0x0 },
135 { NAU8825_REG_INTERRUPT_MASK, 0x0 },
136 { NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff },
137 { NAU8825_REG_SAR_CTRL, 0x0015 },
138 { NAU8825_REG_KEYDET_CTRL, 0x0110 },
139 { NAU8825_REG_VDET_THRESHOLD_1, 0x0 },
140 { NAU8825_REG_VDET_THRESHOLD_2, 0x0 },
141 { NAU8825_REG_VDET_THRESHOLD_3, 0x0 },
142 { NAU8825_REG_VDET_THRESHOLD_4, 0x0 },
143 { NAU8825_REG_GPIO34_CTRL, 0x0 },
144 { NAU8825_REG_GPIO12_CTRL, 0x0 },
145 { NAU8825_REG_TDM_CTRL, 0x0 },
146 { NAU8825_REG_I2S_PCM_CTRL1, 0x000b },
147 { NAU8825_REG_I2S_PCM_CTRL2, 0x8010 },
148 { NAU8825_REG_LEFT_TIME_SLOT, 0x0 },
149 { NAU8825_REG_RIGHT_TIME_SLOT, 0x0 },
150 { NAU8825_REG_BIQ_CTRL, 0x0 },
151 { NAU8825_REG_BIQ_COF1, 0x0 },
152 { NAU8825_REG_BIQ_COF2, 0x0 },
153 { NAU8825_REG_BIQ_COF3, 0x0 },
154 { NAU8825_REG_BIQ_COF4, 0x0 },
155 { NAU8825_REG_BIQ_COF5, 0x0 },
156 { NAU8825_REG_BIQ_COF6, 0x0 },
157 { NAU8825_REG_BIQ_COF7, 0x0 },
158 { NAU8825_REG_BIQ_COF8, 0x0 },
159 { NAU8825_REG_BIQ_COF9, 0x0 },
160 { NAU8825_REG_BIQ_COF10, 0x0 },
161 { NAU8825_REG_ADC_RATE, 0x0010 },
162 { NAU8825_REG_DAC_CTRL1, 0x0001 },
163 { NAU8825_REG_DAC_CTRL2, 0x0 },
164 { NAU8825_REG_DAC_DGAIN_CTRL, 0x0 },
165 { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf },
166 { NAU8825_REG_MUTE_CTRL, 0x0 },
167 { NAU8825_REG_HSVOL_CTRL, 0x0 },
168 { NAU8825_REG_DACL_CTRL, 0x02cf },
169 { NAU8825_REG_DACR_CTRL, 0x00cf },
170 { NAU8825_REG_ADC_DRC_KNEE_IP12, 0x1486 },
171 { NAU8825_REG_ADC_DRC_KNEE_IP34, 0x0f12 },
172 { NAU8825_REG_ADC_DRC_SLOPES, 0x25ff },
173 { NAU8825_REG_ADC_DRC_ATKDCY, 0x3457 },
174 { NAU8825_REG_DAC_DRC_KNEE_IP12, 0x1486 },
175 { NAU8825_REG_DAC_DRC_KNEE_IP34, 0x0f12 },
176 { NAU8825_REG_DAC_DRC_SLOPES, 0x25f9 },
177 { NAU8825_REG_DAC_DRC_ATKDCY, 0x3457 },
178 { NAU8825_REG_IMM_MODE_CTRL, 0x0 },
179 { NAU8825_REG_CLASSG_CTRL, 0x0 },
180 { NAU8825_REG_OPT_EFUSE_CTRL, 0x0 },
181 { NAU8825_REG_MISC_CTRL, 0x0 },
182 { NAU8825_REG_FLL2_LOWER, 0x0 },
183 { NAU8825_REG_FLL2_UPPER, 0x0 },
184 { NAU8825_REG_BIAS_ADJ, 0x0 },
185 { NAU8825_REG_TRIM_SETTINGS, 0x0 },
186 { NAU8825_REG_ANALOG_CONTROL_1, 0x0 },
187 { NAU8825_REG_ANALOG_CONTROL_2, 0x0 },
188 { NAU8825_REG_ANALOG_ADC_1, 0x0011 },
189 { NAU8825_REG_ANALOG_ADC_2, 0x0020 },
190 { NAU8825_REG_RDAC, 0x0008 },
191 { NAU8825_REG_MIC_BIAS, 0x0006 },
192 { NAU8825_REG_BOOST, 0x0 },
193 { NAU8825_REG_FEPGA, 0x0 },
194 { NAU8825_REG_POWER_UP_CONTROL, 0x0 },
195 { NAU8825_REG_CHARGE_PUMP, 0x0 },
196 };
197
198 /* register backup table when cross talk detection */
199 static struct reg_default nau8825_xtalk_baktab[] = {
200 { NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf },
201 { NAU8825_REG_HSVOL_CTRL, 0 },
202 { NAU8825_REG_DACL_CTRL, 0x00cf },
203 { NAU8825_REG_DACR_CTRL, 0x02cf },
204 };
205
206 /* The regmap patch for Rev C */
207 static const struct reg_sequence nau8825_regmap_patch[] = {
208 { NAU8825_REG_FLL2, 0x0000 },
209 { NAU8825_REG_FLL4, 0x8010 },
210 { NAU8825_REG_FLL_VCO_RSV, 0x0bc0 },
211 { NAU8825_REG_INTERRUPT_MASK, 0x0800 },
212 { NAU8825_REG_DACL_CTRL, 0x00cf },
213 { NAU8825_REG_DACR_CTRL, 0x02cf },
214 { NAU8825_REG_OPT_EFUSE_CTRL, 0x0400 },
215 { NAU8825_REG_FLL2_LOWER, 0x26e9 },
216 { NAU8825_REG_FLL2_UPPER, 0x0031 },
217 { NAU8825_REG_ANALOG_CONTROL_2, 0x0020 },
218 { NAU8825_REG_ANALOG_ADC_2, 0x0220 },
219 { NAU8825_REG_MIC_BIAS, 0x0046 },
220 };
221
222 /**
223 * nau8825_sema_acquire - acquire the semaphore of nau88l25
224 * @nau8825: component to register the codec private data with
225 * @timeout: how long in jiffies to wait before failure or zero to wait
226 * until release
227 *
228 * Attempts to acquire the semaphore with number of jiffies. If no more
229 * tasks are allowed to acquire the semaphore, calling this function will
230 * put the task to sleep. If the semaphore is not released within the
231 * specified number of jiffies, this function returns.
232 * If the semaphore is not released within the specified number of jiffies,
233 * this function returns -ETIME. If the sleep is interrupted by a signal,
234 * this function will return -EINTR. It returns 0 if the semaphore was
235 * acquired successfully.
236 *
237 * Acquires the semaphore without jiffies. Try to acquire the semaphore
238 * atomically. Returns 0 if the semaphore has been acquired successfully
239 * or 1 if it cannot be acquired.
240 */
nau8825_sema_acquire(struct nau8825 * nau8825,long timeout)241 static int nau8825_sema_acquire(struct nau8825 *nau8825, long timeout)
242 {
243 int ret;
244
245 if (timeout) {
246 ret = down_timeout(&nau8825->xtalk_sem, timeout);
247 if (ret < 0)
248 dev_warn(nau8825->dev, "Acquire semaphore timeout\n");
249 } else {
250 ret = down_trylock(&nau8825->xtalk_sem);
251 if (ret)
252 dev_warn(nau8825->dev, "Acquire semaphore fail\n");
253 }
254
255 return ret;
256 }
257
258 /**
259 * nau8825_sema_release - release the semaphore of nau88l25
260 * @nau8825: component to register the codec private data with
261 *
262 * Release the semaphore which may be called from any context and
263 * even by tasks which have never called down().
264 */
nau8825_sema_release(struct nau8825 * nau8825)265 static inline void nau8825_sema_release(struct nau8825 *nau8825)
266 {
267 up(&nau8825->xtalk_sem);
268 }
269
270 /**
271 * nau8825_sema_reset - reset the semaphore for nau88l25
272 * @nau8825: component to register the codec private data with
273 *
274 * Reset the counter of the semaphore. Call this function to restart
275 * a new round task management.
276 */
nau8825_sema_reset(struct nau8825 * nau8825)277 static inline void nau8825_sema_reset(struct nau8825 *nau8825)
278 {
279 nau8825->xtalk_sem.count = 1;
280 }
281
282 /**
283 * nau8825_hpvol_ramp - Ramp up the headphone volume change gradually to target level.
284 *
285 * @nau8825: component to register the codec private data with
286 * @vol_from: the volume to start up
287 * @vol_to: the target volume
288 * @step: the volume span to move on
289 *
290 * The headphone volume is from 0dB to minimum -54dB and -1dB per step.
291 * If the volume changes sharp, there is a pop noise heard in headphone. We
292 * provide the function to ramp up the volume up or down by delaying 10ms
293 * per step.
294 */
nau8825_hpvol_ramp(struct nau8825 * nau8825,unsigned int vol_from,unsigned int vol_to,unsigned int step)295 static void nau8825_hpvol_ramp(struct nau8825 *nau8825,
296 unsigned int vol_from, unsigned int vol_to, unsigned int step)
297 {
298 unsigned int value, volume, ramp_up, from, to;
299
300 if (vol_from == vol_to || step == 0) {
301 return;
302 } else if (vol_from < vol_to) {
303 ramp_up = true;
304 from = vol_from;
305 to = vol_to;
306 } else {
307 ramp_up = false;
308 from = vol_to;
309 to = vol_from;
310 }
311 /* only handle volume from 0dB to minimum -54dB */
312 if (to > NAU8825_HP_VOL_MIN)
313 to = NAU8825_HP_VOL_MIN;
314
315 for (volume = from; volume < to; volume += step) {
316 if (ramp_up)
317 value = volume;
318 else
319 value = to - volume + from;
320 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
321 NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK,
322 (value << NAU8825_HPL_VOL_SFT) | value);
323 usleep_range(10000, 10500);
324 }
325 if (ramp_up)
326 value = to;
327 else
328 value = from;
329 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSVOL_CTRL,
330 NAU8825_HPL_VOL_MASK | NAU8825_HPR_VOL_MASK,
331 (value << NAU8825_HPL_VOL_SFT) | value);
332 }
333
334 /**
335 * nau8825_intlog10_dec3 - Computes log10 of a value, rounding the result to 3 decimal places.
336 * @value: input for log10
337 *
338 * return log10(value) * 1000
339 */
nau8825_intlog10_dec3(u32 value)340 static u32 nau8825_intlog10_dec3(u32 value)
341 {
342 return intlog10(value) / ((1 << 24) / 1000);
343 }
344
345 /**
346 * nau8825_xtalk_sidetone - computes cross talk suppression sidetone gain.
347 *
348 * @sig_org: orignal signal level
349 * @sig_cros: cross talk signal level
350 *
351 * The orignal and cross talk signal vlues need to be characterized.
352 * Once these values have been characterized, this sidetone value
353 * can be converted to decibel with the equation below.
354 * sidetone = 20 * log (original signal level / crosstalk signal level)
355 *
356 * return cross talk sidetone gain
357 */
nau8825_xtalk_sidetone(u32 sig_org,u32 sig_cros)358 static u32 nau8825_xtalk_sidetone(u32 sig_org, u32 sig_cros)
359 {
360 u32 gain, sidetone;
361
362 if (WARN_ON(sig_org == 0 || sig_cros == 0))
363 return 0;
364
365 sig_org = nau8825_intlog10_dec3(sig_org);
366 sig_cros = nau8825_intlog10_dec3(sig_cros);
367 if (sig_org >= sig_cros)
368 gain = (sig_org - sig_cros) * 20 + GAIN_AUGMENT;
369 else
370 gain = (sig_cros - sig_org) * 20 + GAIN_AUGMENT;
371 sidetone = SIDETONE_BASE - gain * 2;
372 sidetone /= 1000;
373
374 return sidetone;
375 }
376
nau8825_xtalk_baktab_index_by_reg(unsigned int reg)377 static int nau8825_xtalk_baktab_index_by_reg(unsigned int reg)
378 {
379 int index;
380
381 for (index = 0; index < ARRAY_SIZE(nau8825_xtalk_baktab); index++)
382 if (nau8825_xtalk_baktab[index].reg == reg)
383 return index;
384 return -EINVAL;
385 }
386
nau8825_xtalk_backup(struct nau8825 * nau8825)387 static void nau8825_xtalk_backup(struct nau8825 *nau8825)
388 {
389 int i;
390
391 if (nau8825->xtalk_baktab_initialized)
392 return;
393
394 /* Backup some register values to backup table */
395 for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++)
396 regmap_read(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
397 &nau8825_xtalk_baktab[i].def);
398
399 nau8825->xtalk_baktab_initialized = true;
400 }
401
nau8825_xtalk_restore(struct nau8825 * nau8825,bool cause_cancel)402 static void nau8825_xtalk_restore(struct nau8825 *nau8825, bool cause_cancel)
403 {
404 int i, volume;
405
406 if (!nau8825->xtalk_baktab_initialized)
407 return;
408
409 /* Restore register values from backup table; When the driver restores
410 * the headphone volume in XTALK_DONE state, it needs recover to
411 * original level gradually with 3dB per step for less pop noise.
412 * Otherwise, the restore should do ASAP.
413 */
414 for (i = 0; i < ARRAY_SIZE(nau8825_xtalk_baktab); i++) {
415 if (!cause_cancel && nau8825_xtalk_baktab[i].reg ==
416 NAU8825_REG_HSVOL_CTRL) {
417 /* Ramping up the volume change to reduce pop noise */
418 volume = nau8825_xtalk_baktab[i].def &
419 NAU8825_HPR_VOL_MASK;
420 nau8825_hpvol_ramp(nau8825, 0, volume, 3);
421 continue;
422 }
423 regmap_write(nau8825->regmap, nau8825_xtalk_baktab[i].reg,
424 nau8825_xtalk_baktab[i].def);
425 }
426
427 nau8825->xtalk_baktab_initialized = false;
428 }
429
nau8825_xtalk_prepare_dac(struct nau8825 * nau8825)430 static void nau8825_xtalk_prepare_dac(struct nau8825 *nau8825)
431 {
432 /* Enable power of DAC path */
433 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
434 NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL |
435 NAU8825_ENABLE_ADC | NAU8825_ENABLE_ADC_CLK |
436 NAU8825_ENABLE_DAC_CLK, NAU8825_ENABLE_DACR |
437 NAU8825_ENABLE_DACL | NAU8825_ENABLE_ADC |
438 NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK);
439 /* Prevent startup click by letting charge pump to ramp up and
440 * change bump enable
441 */
442 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
443 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN,
444 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN);
445 /* Enable clock sync of DAC and DAC clock */
446 regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC,
447 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN |
448 NAU8825_RDAC_FS_BCLK_ENB,
449 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN);
450 /* Power up output driver with 2 stage */
451 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
452 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
453 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L,
454 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
455 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L);
456 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
457 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L,
458 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L);
459 /* HP outputs not shouted to ground */
460 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL,
461 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L, 0);
462 /* Enable HP boost driver */
463 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
464 NAU8825_HP_BOOST_DIS, NAU8825_HP_BOOST_DIS);
465 /* Enable class G compare path to supply 1.8V or 0.9V. */
466 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLASSG_CTRL,
467 NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN,
468 NAU8825_CLASSG_LDAC_EN | NAU8825_CLASSG_RDAC_EN);
469 }
470
nau8825_xtalk_prepare_adc(struct nau8825 * nau8825)471 static void nau8825_xtalk_prepare_adc(struct nau8825 *nau8825)
472 {
473 /* Power up left ADC and raise 5dB than Vmid for Vref */
474 regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2,
475 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK,
476 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_VMID_PLUS_0_5DB);
477 }
478
nau8825_xtalk_clock(struct nau8825 * nau8825)479 static void nau8825_xtalk_clock(struct nau8825 *nau8825)
480 {
481 /* Recover FLL default value */
482 regmap_write(nau8825->regmap, NAU8825_REG_FLL1, 0x0);
483 regmap_write(nau8825->regmap, NAU8825_REG_FLL2, 0x3126);
484 regmap_write(nau8825->regmap, NAU8825_REG_FLL3, 0x0008);
485 regmap_write(nau8825->regmap, NAU8825_REG_FLL4, 0x0010);
486 regmap_write(nau8825->regmap, NAU8825_REG_FLL5, 0x0);
487 regmap_write(nau8825->regmap, NAU8825_REG_FLL6, 0x6000);
488 /* Enable internal VCO clock for detection signal generated */
489 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
490 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
491 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN,
492 NAU8825_DCO_EN);
493 /* Given specific clock frequency of internal clock to
494 * generate signal.
495 */
496 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
497 NAU8825_CLK_MCLK_SRC_MASK, 0xf);
498 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1,
499 NAU8825_FLL_RATIO_MASK, 0x10);
500 }
501
nau8825_xtalk_prepare(struct nau8825 * nau8825)502 static void nau8825_xtalk_prepare(struct nau8825 *nau8825)
503 {
504 int volume, index;
505
506 /* Backup those registers changed by cross talk detection */
507 nau8825_xtalk_backup(nau8825);
508 /* Config IIS as master to output signal by codec */
509 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
510 NAU8825_I2S_MS_MASK | NAU8825_I2S_LRC_DIV_MASK |
511 NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_MASTER |
512 (0x2 << NAU8825_I2S_LRC_DIV_SFT) | 0x1);
513 /* Ramp up headphone volume to 0dB to get better performance and
514 * avoid pop noise in headphone.
515 */
516 index = nau8825_xtalk_baktab_index_by_reg(NAU8825_REG_HSVOL_CTRL);
517 if (index != -EINVAL) {
518 volume = nau8825_xtalk_baktab[index].def &
519 NAU8825_HPR_VOL_MASK;
520 nau8825_hpvol_ramp(nau8825, volume, 0, 3);
521 }
522 nau8825_xtalk_clock(nau8825);
523 nau8825_xtalk_prepare_dac(nau8825);
524 nau8825_xtalk_prepare_adc(nau8825);
525 /* Config channel path and digital gain */
526 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL,
527 NAU8825_DACL_CH_SEL_MASK | NAU8825_DACL_CH_VOL_MASK,
528 NAU8825_DACL_CH_SEL_L | 0xab);
529 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL,
530 NAU8825_DACR_CH_SEL_MASK | NAU8825_DACR_CH_VOL_MASK,
531 NAU8825_DACR_CH_SEL_R | 0xab);
532 /* Config cross talk parameters and generate the 23Hz sine wave with
533 * 1/16 full scale of signal level for impedance measurement.
534 */
535 regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL,
536 NAU8825_IMM_THD_MASK | NAU8825_IMM_GEN_VOL_MASK |
537 NAU8825_IMM_CYC_MASK | NAU8825_IMM_DAC_SRC_MASK,
538 (0x9 << NAU8825_IMM_THD_SFT) | NAU8825_IMM_GEN_VOL_1_16th |
539 NAU8825_IMM_CYC_8192 | NAU8825_IMM_DAC_SRC_SIN);
540 /* RMS intrruption enable */
541 regmap_update_bits(nau8825->regmap,
542 NAU8825_REG_INTERRUPT_MASK, NAU8825_IRQ_RMS_EN, 0);
543 /* Power up left and right DAC */
544 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825)
545 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
546 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0);
547 else
548 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
549 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
550 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
551 }
552
nau8825_xtalk_clean_dac(struct nau8825 * nau8825)553 static void nau8825_xtalk_clean_dac(struct nau8825 *nau8825)
554 {
555 /* Disable HP boost driver */
556 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
557 NAU8825_HP_BOOST_DIS, 0);
558 /* HP outputs shouted to ground */
559 regmap_update_bits(nau8825->regmap, NAU8825_REG_HSD_CTRL,
560 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L,
561 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
562 /* Power down left and right DAC */
563 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825)
564 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
565 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
566 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
567 else
568 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
569 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0);
570
571 /* Enable the TESTDAC and disable L/R HP impedance */
572 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
573 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP |
574 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
575 /* Power down output driver with 2 stage */
576 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
577 NAU8825_POWERUP_HP_DRV_R | NAU8825_POWERUP_HP_DRV_L, 0);
578 regmap_update_bits(nau8825->regmap, NAU8825_REG_POWER_UP_CONTROL,
579 NAU8825_POWERUP_INTEGR_R | NAU8825_POWERUP_INTEGR_L |
580 NAU8825_POWERUP_DRV_IN_R | NAU8825_POWERUP_DRV_IN_L, 0);
581 /* Disable clock sync of DAC and DAC clock */
582 regmap_update_bits(nau8825->regmap, NAU8825_REG_RDAC,
583 NAU8825_RDAC_EN | NAU8825_RDAC_CLK_EN, 0);
584 /* Disable charge pump ramp up function and change bump */
585 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
586 NAU8825_JAMNODCLOW | NAU8825_CHANRGE_PUMP_EN, 0);
587 /* Disable power of DAC path */
588 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
589 NAU8825_ENABLE_DACR | NAU8825_ENABLE_DACL |
590 NAU8825_ENABLE_ADC_CLK | NAU8825_ENABLE_DAC_CLK, 0);
591 if (!nau8825->irq)
592 regmap_update_bits(nau8825->regmap,
593 NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0);
594 }
595
nau8825_xtalk_clean_adc(struct nau8825 * nau8825)596 static void nau8825_xtalk_clean_adc(struct nau8825 *nau8825)
597 {
598 /* Power down left ADC and restore voltage to Vmid */
599 regmap_update_bits(nau8825->regmap, NAU8825_REG_ANALOG_ADC_2,
600 NAU8825_POWERUP_ADCL | NAU8825_ADC_VREFSEL_MASK, 0);
601 }
602
nau8825_xtalk_clean(struct nau8825 * nau8825,bool cause_cancel)603 static void nau8825_xtalk_clean(struct nau8825 *nau8825, bool cause_cancel)
604 {
605 /* Enable internal VCO needed for interruptions */
606 nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
607 nau8825_xtalk_clean_dac(nau8825);
608 nau8825_xtalk_clean_adc(nau8825);
609 /* Clear cross talk parameters and disable */
610 regmap_write(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL, 0);
611 /* RMS intrruption disable */
612 regmap_update_bits(nau8825->regmap, NAU8825_REG_INTERRUPT_MASK,
613 NAU8825_IRQ_RMS_EN, NAU8825_IRQ_RMS_EN);
614 /* Recover default value for IIS */
615 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
616 NAU8825_I2S_MS_MASK | NAU8825_I2S_LRC_DIV_MASK |
617 NAU8825_I2S_BLK_DIV_MASK, NAU8825_I2S_MS_SLAVE);
618 /* Restore value of specific register for cross talk */
619 nau8825_xtalk_restore(nau8825, cause_cancel);
620 }
621
nau8825_xtalk_imm_start(struct nau8825 * nau8825,int vol)622 static void nau8825_xtalk_imm_start(struct nau8825 *nau8825, int vol)
623 {
624 /* Apply ADC volume for better cross talk performance */
625 regmap_update_bits(nau8825->regmap, NAU8825_REG_ADC_DGAIN_CTRL,
626 NAU8825_ADC_DIG_VOL_MASK, vol);
627 /* Disables JKTIP(HPL) DAC channel for right to left measurement.
628 * Do it before sending signal in order to erase pop noise.
629 */
630 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
631 NAU8825_BIAS_TESTDACR_EN | NAU8825_BIAS_TESTDACL_EN,
632 NAU8825_BIAS_TESTDACL_EN);
633 switch (nau8825->xtalk_state) {
634 case NAU8825_XTALK_HPR_R2L:
635 /* Enable right headphone impedance */
636 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
637 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP,
638 NAU8825_BIAS_HPR_IMP);
639 break;
640 case NAU8825_XTALK_HPL_R2L:
641 /* Enable left headphone impedance */
642 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
643 NAU8825_BIAS_HPR_IMP | NAU8825_BIAS_HPL_IMP,
644 NAU8825_BIAS_HPL_IMP);
645 break;
646 default:
647 break;
648 }
649 msleep(100);
650 /* Impedance measurement mode enable */
651 regmap_update_bits(nau8825->regmap, NAU8825_REG_IMM_MODE_CTRL,
652 NAU8825_IMM_EN, NAU8825_IMM_EN);
653 }
654
nau8825_xtalk_imm_stop(struct nau8825 * nau8825)655 static void nau8825_xtalk_imm_stop(struct nau8825 *nau8825)
656 {
657 /* Impedance measurement mode disable */
658 regmap_update_bits(nau8825->regmap,
659 NAU8825_REG_IMM_MODE_CTRL, NAU8825_IMM_EN, 0);
660 }
661
662 /* The cross talk measurement function can reduce cross talk across the
663 * JKTIP(HPL) and JKR1(HPR) outputs which measures the cross talk signal
664 * level to determine what cross talk reduction gain is. This system works by
665 * sending a 23Hz -24dBV sine wave into the headset output DAC and through
666 * the PGA. The output of the PGA is then connected to an internal current
667 * sense which measures the attenuated 23Hz signal and passing the output to
668 * an ADC which converts the measurement to a binary code. With two separated
669 * measurement, one for JKR1(HPR) and the other JKTIP(HPL), measurement data
670 * can be separated read in IMM_RMS_L for HSR and HSL after each measurement.
671 * Thus, the measurement function has four states to complete whole sequence.
672 * 1. Prepare state : Prepare the resource for detection and transfer to HPR
673 * IMM stat to make JKR1(HPR) impedance measure.
674 * 2. HPR IMM state : Read out orignal signal level of JKR1(HPR) and transfer
675 * to HPL IMM state to make JKTIP(HPL) impedance measure.
676 * 3. HPL IMM state : Read out cross talk signal level of JKTIP(HPL) and
677 * transfer to IMM state to determine suppression sidetone gain.
678 * 4. IMM state : Computes cross talk suppression sidetone gain with orignal
679 * and cross talk signal level. Apply this gain and then restore codec
680 * configuration. Then transfer to Done state for ending.
681 */
nau8825_xtalk_measure(struct nau8825 * nau8825)682 static void nau8825_xtalk_measure(struct nau8825 *nau8825)
683 {
684 u32 sidetone;
685
686 switch (nau8825->xtalk_state) {
687 case NAU8825_XTALK_PREPARE:
688 /* In prepare state, set up clock, intrruption, DAC path, ADC
689 * path and cross talk detection parameters for preparation.
690 */
691 nau8825_xtalk_prepare(nau8825);
692 msleep(280);
693 /* Trigger right headphone impedance detection */
694 nau8825->xtalk_state = NAU8825_XTALK_HPR_R2L;
695 nau8825_xtalk_imm_start(nau8825, 0x00d2);
696 break;
697 case NAU8825_XTALK_HPR_R2L:
698 /* In right headphone IMM state, read out right headphone
699 * impedance measure result, and then start up left side.
700 */
701 regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L,
702 &nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]);
703 dev_dbg(nau8825->dev, "HPR_R2L imm: %x\n",
704 nau8825->imp_rms[NAU8825_XTALK_HPR_R2L]);
705 /* Disable then re-enable IMM mode to update */
706 nau8825_xtalk_imm_stop(nau8825);
707 /* Trigger left headphone impedance detection */
708 nau8825->xtalk_state = NAU8825_XTALK_HPL_R2L;
709 nau8825_xtalk_imm_start(nau8825, 0x00ff);
710 break;
711 case NAU8825_XTALK_HPL_R2L:
712 /* In left headphone IMM state, read out left headphone
713 * impedance measure result, and delay some time to wait
714 * detection sine wave output finish. Then, we can calculate
715 * the cross talk suppresstion side tone according to the L/R
716 * headphone imedance.
717 */
718 regmap_read(nau8825->regmap, NAU8825_REG_IMM_RMS_L,
719 &nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
720 dev_dbg(nau8825->dev, "HPL_R2L imm: %x\n",
721 nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
722 nau8825_xtalk_imm_stop(nau8825);
723 msleep(150);
724 nau8825->xtalk_state = NAU8825_XTALK_IMM;
725 break;
726 case NAU8825_XTALK_IMM:
727 /* In impedance measure state, the orignal and cross talk
728 * signal level vlues are ready. The side tone gain is deter-
729 * mined with these signal level. After all, restore codec
730 * configuration.
731 */
732 sidetone = nau8825_xtalk_sidetone(
733 nau8825->imp_rms[NAU8825_XTALK_HPR_R2L],
734 nau8825->imp_rms[NAU8825_XTALK_HPL_R2L]);
735 dev_dbg(nau8825->dev, "cross talk sidetone: %x\n", sidetone);
736 regmap_write(nau8825->regmap, NAU8825_REG_DAC_DGAIN_CTRL,
737 (sidetone << 8) | sidetone);
738 nau8825_xtalk_clean(nau8825, false);
739 nau8825->xtalk_state = NAU8825_XTALK_DONE;
740 break;
741 default:
742 break;
743 }
744 }
745
nau8825_xtalk_work(struct work_struct * work)746 static void nau8825_xtalk_work(struct work_struct *work)
747 {
748 struct nau8825 *nau8825 = container_of(
749 work, struct nau8825, xtalk_work);
750
751 nau8825_xtalk_measure(nau8825);
752 /* To determine the cross talk side tone gain when reach
753 * the impedance measure state.
754 */
755 if (nau8825->xtalk_state == NAU8825_XTALK_IMM)
756 nau8825_xtalk_measure(nau8825);
757
758 /* Delay jack report until cross talk detection process
759 * completed. It can avoid application to do playback
760 * preparation before cross talk detection is still working.
761 * Meanwhile, the protection of the cross talk detection
762 * is released.
763 */
764 if (nau8825->xtalk_state == NAU8825_XTALK_DONE) {
765 snd_soc_jack_report(nau8825->jack, nau8825->xtalk_event,
766 nau8825->xtalk_event_mask);
767 nau8825_sema_release(nau8825);
768 nau8825->xtalk_protect = false;
769 }
770 }
771
nau8825_xtalk_cancel(struct nau8825 * nau8825)772 static void nau8825_xtalk_cancel(struct nau8825 *nau8825)
773 {
774 /* If the crosstalk is eanbled and the process is on going,
775 * the driver forces to cancel the crosstalk task and
776 * restores the configuration to original status.
777 */
778 if (nau8825->xtalk_enable && nau8825->xtalk_state !=
779 NAU8825_XTALK_DONE) {
780 cancel_work_sync(&nau8825->xtalk_work);
781 nau8825_xtalk_clean(nau8825, true);
782 }
783 /* Reset parameters for cross talk suppression function */
784 nau8825_sema_reset(nau8825);
785 nau8825->xtalk_state = NAU8825_XTALK_DONE;
786 nau8825->xtalk_protect = false;
787 }
788
nau8825_readable_reg(struct device * dev,unsigned int reg)789 static bool nau8825_readable_reg(struct device *dev, unsigned int reg)
790 {
791 switch (reg) {
792 case NAU8825_REG_ENA_CTRL ... NAU8825_REG_FLL_VCO_RSV:
793 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL:
794 case NAU8825_REG_INTERRUPT_MASK ... NAU8825_REG_KEYDET_CTRL:
795 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL:
796 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY:
797 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY:
798 case NAU8825_REG_IMM_MODE_CTRL ... NAU8825_REG_IMM_RMS_R:
799 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL:
800 case NAU8825_REG_MISC_CTRL:
801 case NAU8825_REG_I2C_DEVICE_ID ... NAU8825_REG_FLL2_UPPER:
802 case NAU8825_REG_BIAS_ADJ:
803 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2:
804 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS:
805 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA:
806 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_GENERAL_STATUS:
807 return true;
808 default:
809 return false;
810 }
811
812 }
813
nau8825_writeable_reg(struct device * dev,unsigned int reg)814 static bool nau8825_writeable_reg(struct device *dev, unsigned int reg)
815 {
816 switch (reg) {
817 case NAU8825_REG_RESET ... NAU8825_REG_FLL_VCO_RSV:
818 case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL:
819 case NAU8825_REG_INTERRUPT_MASK:
820 case NAU8825_REG_INT_CLR_KEY_STATUS ... NAU8825_REG_KEYDET_CTRL:
821 case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL:
822 case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY:
823 case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY:
824 case NAU8825_REG_IMM_MODE_CTRL:
825 case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL:
826 case NAU8825_REG_MISC_CTRL:
827 case NAU8825_REG_FLL2_LOWER ... NAU8825_REG_FLL2_UPPER:
828 case NAU8825_REG_BIAS_ADJ:
829 case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2:
830 case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS:
831 case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA:
832 case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_CHARGE_PUMP:
833 return true;
834 default:
835 return false;
836 }
837 }
838
nau8825_volatile_reg(struct device * dev,unsigned int reg)839 static bool nau8825_volatile_reg(struct device *dev, unsigned int reg)
840 {
841 switch (reg) {
842 case NAU8825_REG_RESET:
843 case NAU8825_REG_IRQ_STATUS:
844 case NAU8825_REG_INT_CLR_KEY_STATUS:
845 case NAU8825_REG_IMM_RMS_L:
846 case NAU8825_REG_IMM_RMS_R:
847 case NAU8825_REG_I2C_DEVICE_ID:
848 case NAU8825_REG_SARDOUT_RAM_STATUS:
849 case NAU8825_REG_CHARGE_PUMP_INPUT_READ:
850 case NAU8825_REG_GENERAL_STATUS:
851 case NAU8825_REG_BIQ_CTRL ... NAU8825_REG_BIQ_COF10:
852 return true;
853 default:
854 return false;
855 }
856 }
857
nau8825_fepga_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)858 static int nau8825_fepga_event(struct snd_soc_dapm_widget *w,
859 struct snd_kcontrol *kcontrol, int event)
860 {
861 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
862 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
863
864 switch (event) {
865 case SND_SOC_DAPM_POST_PMU:
866 regmap_update_bits(nau8825->regmap, NAU8825_REG_FEPGA,
867 NAU8825_ACDC_CTRL_MASK,
868 NAU8825_ACDC_VREF_MICP | NAU8825_ACDC_VREF_MICN);
869 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
870 NAU8825_DISCHRG_EN, NAU8825_DISCHRG_EN);
871 msleep(40);
872 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
873 NAU8825_DISCHRG_EN, 0);
874 regmap_update_bits(nau8825->regmap, NAU8825_REG_FEPGA,
875 NAU8825_ACDC_CTRL_MASK, 0);
876 break;
877 default:
878 break;
879 }
880
881 return 0;
882 }
883
nau8825_adc_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)884 static int nau8825_adc_event(struct snd_soc_dapm_widget *w,
885 struct snd_kcontrol *kcontrol, int event)
886 {
887 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
888 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
889
890 switch (event) {
891 case SND_SOC_DAPM_POST_PMU:
892 msleep(nau8825->adc_delay);
893 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
894 NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
895 break;
896 case SND_SOC_DAPM_POST_PMD:
897 if (!nau8825->irq)
898 regmap_update_bits(nau8825->regmap,
899 NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0);
900 break;
901 default:
902 return -EINVAL;
903 }
904
905 return 0;
906 }
907
nau8825_pump_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)908 static int nau8825_pump_event(struct snd_soc_dapm_widget *w,
909 struct snd_kcontrol *kcontrol, int event)
910 {
911 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
912 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
913
914 switch (event) {
915 case SND_SOC_DAPM_POST_PMU:
916 /* Prevent startup click by letting charge pump to ramp up */
917 msleep(10);
918 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
919 NAU8825_JAMNODCLOW, NAU8825_JAMNODCLOW);
920 break;
921 case SND_SOC_DAPM_PRE_PMD:
922 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
923 NAU8825_JAMNODCLOW, 0);
924 break;
925 default:
926 return -EINVAL;
927 }
928
929 return 0;
930 }
931
nau8825_output_dac_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)932 static int nau8825_output_dac_event(struct snd_soc_dapm_widget *w,
933 struct snd_kcontrol *kcontrol, int event)
934 {
935 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
936 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
937
938 switch (event) {
939 case SND_SOC_DAPM_PRE_PMU:
940 /* Disables the TESTDAC to let DAC signal pass through. */
941 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
942 NAU8825_BIAS_TESTDAC_EN, 0);
943 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825)
944 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
945 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0);
946 else
947 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
948 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
949 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
950 break;
951 case SND_SOC_DAPM_POST_PMD:
952 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
953 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
954 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825)
955 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
956 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
957 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
958 else
959 regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
960 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL, 0);
961
962 break;
963 default:
964 return -EINVAL;
965 }
966
967 return 0;
968 }
969
system_clock_control(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)970 static int system_clock_control(struct snd_soc_dapm_widget *w,
971 struct snd_kcontrol *k, int event)
972 {
973 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
974 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
975 struct regmap *regmap = nau8825->regmap;
976
977 if (SND_SOC_DAPM_EVENT_OFF(event)) {
978 dev_dbg(nau8825->dev, "system clock control : POWER OFF\n");
979 /* Set clock source to disable or internal clock before the
980 * playback or capture end. Codec needs clock for Jack
981 * detection and button press if jack inserted; otherwise,
982 * the clock should be closed.
983 */
984 if (nau8825_is_jack_inserted(regmap)) {
985 nau8825_configure_sysclk(nau8825,
986 NAU8825_CLK_INTERNAL, 0);
987 } else {
988 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0);
989 }
990 }
991
992 return 0;
993 }
994
nau8825_biq_coeff_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)995 static int nau8825_biq_coeff_get(struct snd_kcontrol *kcontrol,
996 struct snd_ctl_elem_value *ucontrol)
997 {
998 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
999 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
1000
1001 if (!component->regmap)
1002 return -EINVAL;
1003
1004 regmap_raw_read(component->regmap, NAU8825_REG_BIQ_COF1,
1005 ucontrol->value.bytes.data, params->max);
1006 return 0;
1007 }
1008
nau8825_biq_coeff_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1009 static int nau8825_biq_coeff_put(struct snd_kcontrol *kcontrol,
1010 struct snd_ctl_elem_value *ucontrol)
1011 {
1012 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1013 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
1014 void *data;
1015
1016 if (!component->regmap)
1017 return -EINVAL;
1018
1019 data = kmemdup(ucontrol->value.bytes.data,
1020 params->max, GFP_KERNEL | GFP_DMA);
1021 if (!data)
1022 return -ENOMEM;
1023
1024 regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL,
1025 NAU8825_BIQ_WRT_EN, 0);
1026 regmap_raw_write(component->regmap, NAU8825_REG_BIQ_COF1,
1027 data, params->max);
1028 regmap_update_bits(component->regmap, NAU8825_REG_BIQ_CTRL,
1029 NAU8825_BIQ_WRT_EN, NAU8825_BIQ_WRT_EN);
1030
1031 kfree(data);
1032 return 0;
1033 }
1034
1035 static const char * const nau8825_biq_path[] = {
1036 "ADC", "DAC"
1037 };
1038
1039 static const struct soc_enum nau8825_biq_path_enum =
1040 SOC_ENUM_SINGLE(NAU8825_REG_BIQ_CTRL, NAU8825_BIQ_PATH_SFT,
1041 ARRAY_SIZE(nau8825_biq_path), nau8825_biq_path);
1042
1043 static const char * const nau8825_adc_decimation[] = {
1044 "32", "64", "128", "256"
1045 };
1046
1047 static const struct soc_enum nau8825_adc_decimation_enum =
1048 SOC_ENUM_SINGLE(NAU8825_REG_ADC_RATE, NAU8825_ADC_SYNC_DOWN_SFT,
1049 ARRAY_SIZE(nau8825_adc_decimation), nau8825_adc_decimation);
1050
1051 static const char * const nau8825_dac_oversampl[] = {
1052 "64", "256", "128", "", "32"
1053 };
1054
1055 static const struct soc_enum nau8825_dac_oversampl_enum =
1056 SOC_ENUM_SINGLE(NAU8825_REG_DAC_CTRL1, NAU8825_DAC_OVERSAMPLE_SFT,
1057 ARRAY_SIZE(nau8825_dac_oversampl), nau8825_dac_oversampl);
1058
1059 static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -10300, 2400);
1060 static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0);
1061 static const DECLARE_TLV_DB_MINMAX(dac_vol_tlv, -5400, 0);
1062 static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600);
1063 static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -9600, 2400);
1064
1065 static const struct snd_kcontrol_new nau8825_controls[] = {
1066 SOC_SINGLE_TLV("Mic Volume", NAU8825_REG_ADC_DGAIN_CTRL,
1067 0, 0xff, 0, adc_vol_tlv),
1068 SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8825_REG_ADC_DGAIN_CTRL,
1069 12, 8, 0x0f, 0, sidetone_vol_tlv),
1070 SOC_DOUBLE_TLV("Headphone Volume", NAU8825_REG_HSVOL_CTRL,
1071 6, 0, 0x3f, 1, dac_vol_tlv),
1072 SOC_SINGLE_TLV("Frontend PGA Volume", NAU8825_REG_POWER_UP_CONTROL,
1073 8, 37, 0, fepga_gain_tlv),
1074 SOC_DOUBLE_TLV("Headphone Crosstalk Volume", NAU8825_REG_DAC_DGAIN_CTRL,
1075 0, 8, 0xff, 0, crosstalk_vol_tlv),
1076
1077 SOC_ENUM("ADC Decimation Rate", nau8825_adc_decimation_enum),
1078 SOC_ENUM("DAC Oversampling Rate", nau8825_dac_oversampl_enum),
1079 /* programmable biquad filter */
1080 SOC_ENUM("BIQ Path Select", nau8825_biq_path_enum),
1081 SND_SOC_BYTES_EXT("BIQ Coefficients", 20,
1082 nau8825_biq_coeff_get, nau8825_biq_coeff_put),
1083 };
1084
1085 /* DAC Mux 0x33[9] and 0x34[9] */
1086 static const char * const nau8825_dac_src[] = {
1087 "DACL", "DACR",
1088 };
1089
1090 static SOC_ENUM_SINGLE_DECL(
1091 nau8825_dacl_enum, NAU8825_REG_DACL_CTRL,
1092 NAU8825_DACL_CH_SEL_SFT, nau8825_dac_src);
1093
1094 static SOC_ENUM_SINGLE_DECL(
1095 nau8825_dacr_enum, NAU8825_REG_DACR_CTRL,
1096 NAU8825_DACR_CH_SEL_SFT, nau8825_dac_src);
1097
1098 static const struct snd_kcontrol_new nau8825_dacl_mux =
1099 SOC_DAPM_ENUM("DACL Source", nau8825_dacl_enum);
1100
1101 static const struct snd_kcontrol_new nau8825_dacr_mux =
1102 SOC_DAPM_ENUM("DACR Source", nau8825_dacr_enum);
1103
1104
1105 static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = {
1106 SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8825_REG_I2S_PCM_CTRL2,
1107 15, 1),
1108 SND_SOC_DAPM_AIF_IN("AIFRX", "Playback", 0, SND_SOC_NOPM, 0, 0),
1109 SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0,
1110 system_clock_control, SND_SOC_DAPM_POST_PMD),
1111
1112 SND_SOC_DAPM_INPUT("MIC"),
1113 SND_SOC_DAPM_MICBIAS("MICBIAS", NAU8825_REG_MIC_BIAS, 8, 0),
1114
1115 SND_SOC_DAPM_PGA_E("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0,
1116 NULL, 0, nau8825_fepga_event, SND_SOC_DAPM_POST_PMU),
1117
1118 SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0,
1119 nau8825_adc_event, SND_SOC_DAPM_POST_PMU |
1120 SND_SOC_DAPM_POST_PMD),
1121 SND_SOC_DAPM_SUPPLY("ADC Clock", NAU8825_REG_ENA_CTRL, 7, 0, NULL, 0),
1122 SND_SOC_DAPM_SUPPLY("ADC Power", NAU8825_REG_ANALOG_ADC_2, 6, 0, NULL,
1123 0),
1124
1125 /* ADC for button press detection. A dapm supply widget is used to
1126 * prevent dapm_power_widgets keeping the codec at SND_SOC_BIAS_ON
1127 * during suspend.
1128 */
1129 SND_SOC_DAPM_SUPPLY("SAR", NAU8825_REG_SAR_CTRL,
1130 NAU8825_SAR_ADC_EN_SFT, 0, NULL, 0),
1131
1132 SND_SOC_DAPM_PGA_S("ADACL", 2, NAU8825_REG_RDAC, 12, 0, NULL, 0),
1133 SND_SOC_DAPM_PGA_S("ADACR", 2, NAU8825_REG_RDAC, 13, 0, NULL, 0),
1134 SND_SOC_DAPM_PGA_S("ADACL Clock", 3, NAU8825_REG_RDAC, 8, 0, NULL, 0),
1135 SND_SOC_DAPM_PGA_S("ADACR Clock", 3, NAU8825_REG_RDAC, 9, 0, NULL, 0),
1136
1137 SND_SOC_DAPM_DAC("DDACR", NULL, NAU8825_REG_ENA_CTRL,
1138 NAU8825_ENABLE_DACR_SFT, 0),
1139 SND_SOC_DAPM_DAC("DDACL", NULL, NAU8825_REG_ENA_CTRL,
1140 NAU8825_ENABLE_DACL_SFT, 0),
1141 SND_SOC_DAPM_SUPPLY("DDAC Clock", NAU8825_REG_ENA_CTRL, 6, 0, NULL, 0),
1142
1143 SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacl_mux),
1144 SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacr_mux),
1145
1146 SND_SOC_DAPM_PGA_S("HP amp L", 0,
1147 NAU8825_REG_CLASSG_CTRL, 1, 0, NULL, 0),
1148 SND_SOC_DAPM_PGA_S("HP amp R", 0,
1149 NAU8825_REG_CLASSG_CTRL, 2, 0, NULL, 0),
1150
1151 SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8825_REG_CHARGE_PUMP, 5, 0,
1152 nau8825_pump_event, SND_SOC_DAPM_POST_PMU |
1153 SND_SOC_DAPM_PRE_PMD),
1154
1155 SND_SOC_DAPM_PGA_S("Output Driver R Stage 1", 4,
1156 NAU8825_REG_POWER_UP_CONTROL, 5, 0, NULL, 0),
1157 SND_SOC_DAPM_PGA_S("Output Driver L Stage 1", 4,
1158 NAU8825_REG_POWER_UP_CONTROL, 4, 0, NULL, 0),
1159 SND_SOC_DAPM_PGA_S("Output Driver R Stage 2", 5,
1160 NAU8825_REG_POWER_UP_CONTROL, 3, 0, NULL, 0),
1161 SND_SOC_DAPM_PGA_S("Output Driver L Stage 2", 5,
1162 NAU8825_REG_POWER_UP_CONTROL, 2, 0, NULL, 0),
1163 SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 6,
1164 NAU8825_REG_POWER_UP_CONTROL, 1, 0, NULL, 0),
1165 SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 6,
1166 NAU8825_REG_POWER_UP_CONTROL, 0, 0, NULL, 0),
1167
1168 SND_SOC_DAPM_PGA_S("Output DACL", 7,
1169 SND_SOC_NOPM, 0, 0, nau8825_output_dac_event,
1170 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
1171 SND_SOC_DAPM_PGA_S("Output DACR", 7,
1172 SND_SOC_NOPM, 0, 0, nau8825_output_dac_event,
1173 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
1174
1175
1176 /* HPOL/R are ungrounded by disabling 16 Ohm pull-downs on playback */
1177 SND_SOC_DAPM_PGA_S("HPOL Pulldown", 8,
1178 NAU8825_REG_HSD_CTRL, 0, 1, NULL, 0),
1179 SND_SOC_DAPM_PGA_S("HPOR Pulldown", 8,
1180 NAU8825_REG_HSD_CTRL, 1, 1, NULL, 0),
1181
1182 /* High current HPOL/R boost driver */
1183 SND_SOC_DAPM_PGA_S("HP Boost Driver", 9,
1184 NAU8825_REG_BOOST, 9, 1, NULL, 0),
1185
1186 /* Class G operation control*/
1187 SND_SOC_DAPM_PGA_S("Class G", 10,
1188 NAU8825_REG_CLASSG_CTRL, 0, 0, NULL, 0),
1189
1190 SND_SOC_DAPM_OUTPUT("HPOL"),
1191 SND_SOC_DAPM_OUTPUT("HPOR"),
1192 };
1193
1194 static const struct snd_soc_dapm_route nau8825_dapm_routes[] = {
1195 {"Frontend PGA", NULL, "MIC"},
1196 {"ADC", NULL, "Frontend PGA"},
1197 {"ADC", NULL, "ADC Clock"},
1198 {"ADC", NULL, "ADC Power"},
1199 {"AIFTX", NULL, "ADC"},
1200 {"AIFTX", NULL, "System Clock"},
1201
1202 {"AIFRX", NULL, "System Clock"},
1203 {"DDACL", NULL, "AIFRX"},
1204 {"DDACR", NULL, "AIFRX"},
1205 {"DDACL", NULL, "DDAC Clock"},
1206 {"DDACR", NULL, "DDAC Clock"},
1207 {"DACL Mux", "DACL", "DDACL"},
1208 {"DACL Mux", "DACR", "DDACR"},
1209 {"DACR Mux", "DACL", "DDACL"},
1210 {"DACR Mux", "DACR", "DDACR"},
1211 {"HP amp L", NULL, "DACL Mux"},
1212 {"HP amp R", NULL, "DACR Mux"},
1213 {"Charge Pump", NULL, "HP amp L"},
1214 {"Charge Pump", NULL, "HP amp R"},
1215 {"ADACL", NULL, "Charge Pump"},
1216 {"ADACR", NULL, "Charge Pump"},
1217 {"ADACL Clock", NULL, "ADACL"},
1218 {"ADACR Clock", NULL, "ADACR"},
1219 {"Output Driver L Stage 1", NULL, "ADACL Clock"},
1220 {"Output Driver R Stage 1", NULL, "ADACR Clock"},
1221 {"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"},
1222 {"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"},
1223 {"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"},
1224 {"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"},
1225 {"Output DACL", NULL, "Output Driver L Stage 3"},
1226 {"Output DACR", NULL, "Output Driver R Stage 3"},
1227 {"HPOL Pulldown", NULL, "Output DACL"},
1228 {"HPOR Pulldown", NULL, "Output DACR"},
1229 {"HP Boost Driver", NULL, "HPOL Pulldown"},
1230 {"HP Boost Driver", NULL, "HPOR Pulldown"},
1231 {"Class G", NULL, "HP Boost Driver"},
1232 {"HPOL", NULL, "Class G"},
1233 {"HPOR", NULL, "Class G"},
1234 };
1235
1236 static const struct nau8825_osr_attr *
nau8825_get_osr(struct nau8825 * nau8825,int stream)1237 nau8825_get_osr(struct nau8825 *nau8825, int stream)
1238 {
1239 unsigned int osr;
1240
1241 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1242 regmap_read(nau8825->regmap,
1243 NAU8825_REG_DAC_CTRL1, &osr);
1244 osr &= NAU8825_DAC_OVERSAMPLE_MASK;
1245 if (osr >= ARRAY_SIZE(osr_dac_sel))
1246 return NULL;
1247 return &osr_dac_sel[osr];
1248 } else {
1249 regmap_read(nau8825->regmap,
1250 NAU8825_REG_ADC_RATE, &osr);
1251 osr &= NAU8825_ADC_SYNC_DOWN_MASK;
1252 if (osr >= ARRAY_SIZE(osr_adc_sel))
1253 return NULL;
1254 return &osr_adc_sel[osr];
1255 }
1256 }
1257
nau8825_dai_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)1258 static int nau8825_dai_startup(struct snd_pcm_substream *substream,
1259 struct snd_soc_dai *dai)
1260 {
1261 struct snd_soc_component *component = dai->component;
1262 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
1263 const struct nau8825_osr_attr *osr;
1264
1265 osr = nau8825_get_osr(nau8825, substream->stream);
1266 if (!osr || !osr->osr)
1267 return -EINVAL;
1268
1269 return snd_pcm_hw_constraint_minmax(substream->runtime,
1270 SNDRV_PCM_HW_PARAM_RATE,
1271 0, CLK_DA_AD_MAX / osr->osr);
1272 }
1273
nau8825_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)1274 static int nau8825_hw_params(struct snd_pcm_substream *substream,
1275 struct snd_pcm_hw_params *params,
1276 struct snd_soc_dai *dai)
1277 {
1278 struct snd_soc_component *component = dai->component;
1279 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
1280 unsigned int val_len = 0, ctrl_val, bclk_fs, bclk_div;
1281 const struct nau8825_osr_attr *osr;
1282 int err = -EINVAL;
1283
1284 nau8825_sema_acquire(nau8825, 3 * HZ);
1285
1286 /* CLK_DAC or CLK_ADC = OSR * FS
1287 * DAC or ADC clock frequency is defined as Over Sampling Rate (OSR)
1288 * multiplied by the audio sample rate (Fs). Note that the OSR and Fs
1289 * values must be selected such that the maximum frequency is less
1290 * than 6.144 MHz.
1291 */
1292 osr = nau8825_get_osr(nau8825, substream->stream);
1293 if (!osr || !osr->osr)
1294 goto error;
1295 if (params_rate(params) * osr->osr > CLK_DA_AD_MAX)
1296 goto error;
1297 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1298 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
1299 NAU8825_CLK_DAC_SRC_MASK,
1300 osr->clk_src << NAU8825_CLK_DAC_SRC_SFT);
1301 else
1302 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
1303 NAU8825_CLK_ADC_SRC_MASK,
1304 osr->clk_src << NAU8825_CLK_ADC_SRC_SFT);
1305
1306 /* make BCLK and LRC divde configuration if the codec as master. */
1307 regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, &ctrl_val);
1308 if (ctrl_val & NAU8825_I2S_MS_MASTER) {
1309 /* get the bclk and fs ratio */
1310 bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params);
1311 if (bclk_fs <= 32)
1312 bclk_div = 2;
1313 else if (bclk_fs <= 64)
1314 bclk_div = 1;
1315 else if (bclk_fs <= 128)
1316 bclk_div = 0;
1317 else
1318 goto error;
1319 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
1320 NAU8825_I2S_LRC_DIV_MASK | NAU8825_I2S_BLK_DIV_MASK,
1321 ((bclk_div + 1) << NAU8825_I2S_LRC_DIV_SFT) | bclk_div);
1322 }
1323
1324 switch (params_width(params)) {
1325 case 16:
1326 val_len |= NAU8825_I2S_DL_16;
1327 break;
1328 case 20:
1329 val_len |= NAU8825_I2S_DL_20;
1330 break;
1331 case 24:
1332 val_len |= NAU8825_I2S_DL_24;
1333 break;
1334 case 32:
1335 val_len |= NAU8825_I2S_DL_32;
1336 break;
1337 default:
1338 goto error;
1339 }
1340
1341 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
1342 NAU8825_I2S_DL_MASK, val_len);
1343 err = 0;
1344
1345 error:
1346 /* Release the semaphore. */
1347 nau8825_sema_release(nau8825);
1348
1349 return err;
1350 }
1351
nau8825_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)1352 static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
1353 {
1354 struct snd_soc_component *component = codec_dai->component;
1355 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
1356 unsigned int ctrl1_val = 0, ctrl2_val = 0;
1357
1358 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
1359 case SND_SOC_DAIFMT_CBM_CFM:
1360 ctrl2_val |= NAU8825_I2S_MS_MASTER;
1361 break;
1362 case SND_SOC_DAIFMT_CBS_CFS:
1363 break;
1364 default:
1365 return -EINVAL;
1366 }
1367
1368 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
1369 case SND_SOC_DAIFMT_NB_NF:
1370 break;
1371 case SND_SOC_DAIFMT_IB_NF:
1372 ctrl1_val |= NAU8825_I2S_BP_INV;
1373 break;
1374 default:
1375 return -EINVAL;
1376 }
1377
1378 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
1379 case SND_SOC_DAIFMT_I2S:
1380 ctrl1_val |= NAU8825_I2S_DF_I2S;
1381 break;
1382 case SND_SOC_DAIFMT_LEFT_J:
1383 ctrl1_val |= NAU8825_I2S_DF_LEFT;
1384 break;
1385 case SND_SOC_DAIFMT_RIGHT_J:
1386 ctrl1_val |= NAU8825_I2S_DF_RIGTH;
1387 break;
1388 case SND_SOC_DAIFMT_DSP_A:
1389 ctrl1_val |= NAU8825_I2S_DF_PCM_AB;
1390 break;
1391 case SND_SOC_DAIFMT_DSP_B:
1392 ctrl1_val |= NAU8825_I2S_DF_PCM_AB;
1393 ctrl1_val |= NAU8825_I2S_PCMB_EN;
1394 break;
1395 default:
1396 return -EINVAL;
1397 }
1398
1399 nau8825_sema_acquire(nau8825, 3 * HZ);
1400
1401 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
1402 NAU8825_I2S_DL_MASK | NAU8825_I2S_DF_MASK |
1403 NAU8825_I2S_BP_MASK | NAU8825_I2S_PCMB_MASK,
1404 ctrl1_val);
1405 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
1406 NAU8825_I2S_MS_MASK, ctrl2_val);
1407
1408 /* Release the semaphore. */
1409 nau8825_sema_release(nau8825);
1410
1411 return 0;
1412 }
1413
1414 /**
1415 * nau8825_set_tdm_slot - configure DAI TDM.
1416 * @dai: DAI
1417 * @tx_mask: bitmask representing active TX slots.
1418 * @rx_mask: bitmask representing active RX slots.
1419 * @slots: Number of slots in use.
1420 * @slot_width: Width in bits for each slot.
1421 *
1422 * Configures a DAI for TDM operation. Support TDM 4/8 slots.
1423 * The limitation is DAC and ADC need shift 4 slots at 8 slots mode.
1424 */
nau8825_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)1425 static int nau8825_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
1426 unsigned int rx_mask, int slots, int slot_width)
1427 {
1428 struct snd_soc_component *component = dai->component;
1429 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
1430 unsigned int ctrl_val = 0, ctrl_offset = 0, value = 0, dac_s, adc_s;
1431
1432 if (slots != 4 && slots != 8) {
1433 dev_err(nau8825->dev, "Only support 4 or 8 slots!\n");
1434 return -EINVAL;
1435 }
1436
1437 /* The driver is limited to 1-channel for ADC, and 2-channel for DAC on TDM mode */
1438 if (hweight_long((unsigned long) tx_mask) != 1 ||
1439 hweight_long((unsigned long) rx_mask) != 2) {
1440 dev_err(nau8825->dev,
1441 "The limitation is 1-channel for ADC, and 2-channel for DAC on TDM mode.\n");
1442 return -EINVAL;
1443 }
1444
1445 if (((tx_mask & 0xf) && (tx_mask & 0xf0)) ||
1446 ((rx_mask & 0xf) && (rx_mask & 0xf0)) ||
1447 ((tx_mask & 0xf) && (rx_mask & 0xf0)) ||
1448 ((rx_mask & 0xf) && (tx_mask & 0xf0))) {
1449 dev_err(nau8825->dev,
1450 "Slot assignment of DAC and ADC need to set same interval.\n");
1451 return -EINVAL;
1452 }
1453
1454 /* The offset of fixed 4 slots for 8 slots support */
1455 if (rx_mask & 0xf0) {
1456 regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
1457 NAU8825_I2S_PCM_TS_EN_MASK, NAU8825_I2S_PCM_TS_EN);
1458 regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1, &value);
1459 ctrl_val |= NAU8825_TDM_OFFSET_EN;
1460 ctrl_offset = 4 * slot_width;
1461 if (!(value & NAU8825_I2S_PCMB_MASK))
1462 ctrl_offset += 1;
1463 dac_s = (rx_mask & 0xf0) >> 4;
1464 adc_s = fls((tx_mask & 0xf0) >> 4);
1465 } else {
1466 dac_s = rx_mask & 0xf;
1467 adc_s = fls(tx_mask & 0xf);
1468 }
1469
1470 ctrl_val |= NAU8825_TDM_MODE;
1471
1472 switch (dac_s) {
1473 case 0x3:
1474 ctrl_val |= 1 << NAU8825_TDM_DACR_RX_SFT;
1475 break;
1476 case 0x5:
1477 ctrl_val |= 2 << NAU8825_TDM_DACR_RX_SFT;
1478 break;
1479 case 0x6:
1480 ctrl_val |= 1 << NAU8825_TDM_DACL_RX_SFT;
1481 ctrl_val |= 2 << NAU8825_TDM_DACR_RX_SFT;
1482 break;
1483 case 0x9:
1484 ctrl_val |= 3 << NAU8825_TDM_DACR_RX_SFT;
1485 break;
1486 case 0xa:
1487 ctrl_val |= 1 << NAU8825_TDM_DACL_RX_SFT;
1488 ctrl_val |= 3 << NAU8825_TDM_DACR_RX_SFT;
1489 break;
1490 case 0xc:
1491 ctrl_val |= 2 << NAU8825_TDM_DACL_RX_SFT;
1492 ctrl_val |= 3 << NAU8825_TDM_DACR_RX_SFT;
1493 break;
1494 default:
1495 return -EINVAL;
1496 }
1497
1498 ctrl_val |= adc_s - 1;
1499
1500 regmap_update_bits(nau8825->regmap, NAU8825_REG_TDM_CTRL,
1501 NAU8825_TDM_MODE | NAU8825_TDM_OFFSET_EN |
1502 NAU8825_TDM_DACL_RX_MASK | NAU8825_TDM_DACR_RX_MASK |
1503 NAU8825_TDM_TX_MASK, ctrl_val);
1504 regmap_update_bits(nau8825->regmap, NAU8825_REG_LEFT_TIME_SLOT,
1505 NAU8825_TSLOT_L0_MASK, ctrl_offset);
1506
1507 return 0;
1508 }
1509
1510 static const struct snd_soc_dai_ops nau8825_dai_ops = {
1511 .startup = nau8825_dai_startup,
1512 .hw_params = nau8825_hw_params,
1513 .set_fmt = nau8825_set_dai_fmt,
1514 .set_tdm_slot = nau8825_set_tdm_slot,
1515 };
1516
1517 #define NAU8825_RATES SNDRV_PCM_RATE_8000_192000
1518 #define NAU8825_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
1519 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
1520
1521 static struct snd_soc_dai_driver nau8825_dai = {
1522 .name = "nau8825-hifi",
1523 .playback = {
1524 .stream_name = "Playback",
1525 .channels_min = 1,
1526 .channels_max = 2,
1527 .rates = NAU8825_RATES,
1528 .formats = NAU8825_FORMATS,
1529 },
1530 .capture = {
1531 .stream_name = "Capture",
1532 .channels_min = 1,
1533 .channels_max = 2, /* Only 1 channel of data */
1534 .rates = NAU8825_RATES,
1535 .formats = NAU8825_FORMATS,
1536 },
1537 .ops = &nau8825_dai_ops,
1538 };
1539
1540 /**
1541 * nau8825_enable_jack_detect - Specify a jack for event reporting
1542 *
1543 * @component: component to register the jack with
1544 * @jack: jack to use to report headset and button events on
1545 *
1546 * After this function has been called the headset insert/remove and button
1547 * events will be routed to the given jack. Jack can be null to stop
1548 * reporting.
1549 */
nau8825_enable_jack_detect(struct snd_soc_component * component,struct snd_soc_jack * jack)1550 int nau8825_enable_jack_detect(struct snd_soc_component *component,
1551 struct snd_soc_jack *jack)
1552 {
1553 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
1554 struct regmap *regmap = nau8825->regmap;
1555
1556 nau8825->jack = jack;
1557
1558 if (!nau8825->jack) {
1559 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1560 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R |
1561 NAU8825_SPKR_DWN1L, 0);
1562 return 0;
1563 }
1564 /* Ground HP Outputs[1:0], needed for headset auto detection
1565 * Enable Automatic Mic/Gnd switching reading on insert interrupt[6]
1566 */
1567 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1568 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L,
1569 NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
1570
1571 return 0;
1572 }
1573 EXPORT_SYMBOL_GPL(nau8825_enable_jack_detect);
1574
1575
nau8825_is_jack_inserted(struct regmap * regmap)1576 static bool nau8825_is_jack_inserted(struct regmap *regmap)
1577 {
1578 bool active_high, is_high;
1579 int status, jkdet;
1580
1581 regmap_read(regmap, NAU8825_REG_JACK_DET_CTRL, &jkdet);
1582 active_high = jkdet & NAU8825_JACK_POLARITY;
1583 regmap_read(regmap, NAU8825_REG_I2C_DEVICE_ID, &status);
1584 is_high = status & NAU8825_GPIO2JD1;
1585 /* return jack connection status according to jack insertion logic
1586 * active high or active low.
1587 */
1588 return active_high == is_high;
1589 }
1590
nau8825_restart_jack_detection(struct regmap * regmap)1591 static void nau8825_restart_jack_detection(struct regmap *regmap)
1592 {
1593 /* this will restart the entire jack detection process including MIC/GND
1594 * switching and create interrupts. We have to go from 0 to 1 and back
1595 * to 0 to restart.
1596 */
1597 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1598 NAU8825_JACK_DET_RESTART, NAU8825_JACK_DET_RESTART);
1599 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1600 NAU8825_JACK_DET_RESTART, 0);
1601 }
1602
nau8825_int_status_clear_all(struct regmap * regmap)1603 static void nau8825_int_status_clear_all(struct regmap *regmap)
1604 {
1605 int active_irq, clear_irq, i;
1606
1607 /* Reset the intrruption status from rightmost bit if the corres-
1608 * ponding irq event occurs.
1609 */
1610 regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq);
1611 for (i = 0; i < NAU8825_REG_DATA_LEN; i++) {
1612 clear_irq = (0x1 << i);
1613 if (active_irq & clear_irq)
1614 regmap_write(regmap,
1615 NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq);
1616 }
1617 }
1618
nau8825_eject_jack(struct nau8825 * nau8825)1619 static void nau8825_eject_jack(struct nau8825 *nau8825)
1620 {
1621 struct snd_soc_dapm_context *dapm = nau8825->dapm;
1622 struct regmap *regmap = nau8825->regmap;
1623
1624 /* Force to cancel the cross talk detection process */
1625 nau8825_xtalk_cancel(nau8825);
1626
1627 snd_soc_dapm_disable_pin(dapm, "SAR");
1628 snd_soc_dapm_disable_pin(dapm, "MICBIAS");
1629 /* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */
1630 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1631 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0);
1632 /* ground HPL/HPR, MICGRND1/2 */
1633 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0xf, 0xf);
1634
1635 snd_soc_dapm_sync(dapm);
1636
1637 /* Clear all interruption status */
1638 nau8825_int_status_clear_all(regmap);
1639
1640 /* Enable the insertion interruption, disable the ejection inter-
1641 * ruption, and then bypass de-bounce circuit.
1642 */
1643 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL,
1644 NAU8825_IRQ_EJECT_DIS | NAU8825_IRQ_INSERT_DIS,
1645 NAU8825_IRQ_EJECT_DIS);
1646 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
1647 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN |
1648 NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_INSERT_EN,
1649 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_EJECT_EN |
1650 NAU8825_IRQ_HEADSET_COMPLETE_EN);
1651 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1652 NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS);
1653
1654 /* Disable ADC needed for interruptions at audo mode */
1655 regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
1656 NAU8825_ENABLE_ADC, 0);
1657
1658 /* Close clock for jack type detection at manual mode */
1659 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0);
1660 }
1661
1662 /* Enable audo mode interruptions with internal clock. */
nau8825_setup_auto_irq(struct nau8825 * nau8825)1663 static void nau8825_setup_auto_irq(struct nau8825 *nau8825)
1664 {
1665 struct regmap *regmap = nau8825->regmap;
1666
1667 /* Enable HSD function */
1668 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1669 NAU8825_HSD_AUTO_MODE, NAU8825_HSD_AUTO_MODE);
1670
1671 /* Enable headset jack type detection complete interruption and
1672 * jack ejection interruption.
1673 */
1674 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
1675 NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_EJECT_EN, 0);
1676
1677 /* Enable internal VCO needed for interruptions */
1678 nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
1679 /* Raise up the internal clock for jack detection */
1680 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
1681 NAU8825_CLK_MCLK_SRC_MASK, 0);
1682
1683 /* Enable ADC needed for interruptions */
1684 regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
1685 NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
1686
1687 /* Chip needs one FSCLK cycle in order to generate interruptions,
1688 * as we cannot guarantee one will be provided by the system. Turning
1689 * master mode on then off enables us to generate that FSCLK cycle
1690 * with a minimum of contention on the clock bus.
1691 */
1692 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
1693 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER);
1694 regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
1695 NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE);
1696
1697 /* Not bypass de-bounce circuit */
1698 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
1699 NAU8825_JACK_DET_DB_BYPASS, 0);
1700
1701 /* Unmask all interruptions */
1702 regmap_write(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 0);
1703
1704 /* Restart the jack detection process at auto mode */
1705 nau8825_restart_jack_detection(regmap);
1706 }
1707
nau8825_button_decode(int value)1708 static int nau8825_button_decode(int value)
1709 {
1710 int buttons = 0;
1711
1712 /* The chip supports up to 8 buttons, but ALSA defines only 6 buttons */
1713 if (value & BIT(0))
1714 buttons |= SND_JACK_BTN_0;
1715 if (value & BIT(1))
1716 buttons |= SND_JACK_BTN_1;
1717 if (value & BIT(2))
1718 buttons |= SND_JACK_BTN_2;
1719 if (value & BIT(3))
1720 buttons |= SND_JACK_BTN_3;
1721 if (value & BIT(4))
1722 buttons |= SND_JACK_BTN_4;
1723 if (value & BIT(5))
1724 buttons |= SND_JACK_BTN_5;
1725
1726 return buttons;
1727 }
1728
nau8825_high_imped_detection(struct nau8825 * nau8825)1729 static int nau8825_high_imped_detection(struct nau8825 *nau8825)
1730 {
1731 struct regmap *regmap = nau8825->regmap;
1732 struct snd_soc_dapm_context *dapm = nau8825->dapm;
1733 unsigned int adc_mg1, adc_mg2;
1734
1735 /* Initial phase */
1736 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1737 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R |
1738 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2);
1739 regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_1,
1740 NAU8825_TESTDACIN_MASK, NAU8825_TESTDACIN_GND);
1741 regmap_write(regmap, NAU8825_REG_TRIM_SETTINGS, 0x6);
1742 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1743 NAU8825_MICBIAS_LOWNOISE_MASK | NAU8825_MICBIAS_VOLTAGE_MASK,
1744 NAU8825_MICBIAS_LOWNOISE_EN);
1745 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1746 NAU8825_SAR_INPUT_MASK | NAU8825_SAR_TRACKING_GAIN_MASK |
1747 NAU8825_SAR_HV_SEL_MASK | NAU8825_SAR_RES_SEL_MASK |
1748 NAU8825_SAR_COMPARE_TIME_MASK | NAU8825_SAR_SAMPLING_TIME_MASK,
1749 NAU8825_SAR_HV_SEL_VDDMIC | NAU8825_SAR_RES_SEL_70K);
1750
1751 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
1752 snd_soc_dapm_force_enable_pin(dapm, "SAR");
1753 snd_soc_dapm_sync(dapm);
1754
1755 /* Configure settings for first reading of SARADC */
1756 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1757 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R |
1758 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND2);
1759 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1760 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1761 NAU8825_MICBIAS_JKR2);
1762 regmap_read(regmap, NAU8825_REG_SARDOUT_RAM_STATUS, &adc_mg1);
1763
1764 /* Configure settings for second reading of SARADC */
1765 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1766 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0);
1767 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1768 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R |
1769 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 |
1770 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
1771 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1772 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R |
1773 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1);
1774 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1775 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1776 NAU8825_MICBIAS_JKSLV);
1777 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1778 NAU8825_SAR_INPUT_MASK, NAU8825_SAR_INPUT_JKSLV);
1779 regmap_read(regmap, NAU8825_REG_SARDOUT_RAM_STATUS, &adc_mg2);
1780
1781 /* Disable phase */
1782 snd_soc_dapm_disable_pin(dapm, "SAR");
1783 snd_soc_dapm_disable_pin(dapm, "MICBIAS");
1784 snd_soc_dapm_sync(dapm);
1785
1786 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1787 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_LOWNOISE_MASK |
1788 NAU8825_MICBIAS_VOLTAGE_MASK, nau8825->micbias_voltage);
1789 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1790 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 | NAU8825_SPKR_DWN1R |
1791 NAU8825_SPKR_DWN1L, NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2 |
1792 NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
1793 regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_1,
1794 NAU8825_TESTDACIN_MASK, NAU8825_TESTDACIN_GND);
1795 regmap_write(regmap, NAU8825_REG_TRIM_SETTINGS, 0);
1796 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1797 NAU8825_SAR_TRACKING_GAIN_MASK | NAU8825_SAR_HV_SEL_MASK,
1798 nau8825->sar_voltage << NAU8825_SAR_TRACKING_GAIN_SFT);
1799 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1800 NAU8825_SAR_COMPARE_TIME_MASK | NAU8825_SAR_SAMPLING_TIME_MASK,
1801 (nau8825->sar_compare_time << NAU8825_SAR_COMPARE_TIME_SFT) |
1802 (nau8825->sar_sampling_time << NAU8825_SAR_SAMPLING_TIME_SFT));
1803 dev_dbg(nau8825->dev, "adc_mg1:%x, adc_mg2:%x\n", adc_mg1, adc_mg2);
1804
1805 /* Confirmation phase */
1806 if (adc_mg1 > adc_mg2) {
1807 dev_dbg(nau8825->dev, "OMTP (micgnd1) mic connected\n");
1808
1809 /* Unground MICGND1 */
1810 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1811 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2,
1812 NAU8825_SPKR_ENGND2);
1813 /* Attach 2kOhm Resistor from MICBIAS to MICGND1 */
1814 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1815 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1816 NAU8825_MICBIAS_JKR2);
1817 /* Attach SARADC to MICGND1 */
1818 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1819 NAU8825_SAR_INPUT_MASK,
1820 NAU8825_SAR_INPUT_JKR2);
1821 } else if (adc_mg1 < adc_mg2) {
1822 dev_dbg(nau8825->dev, "CTIA (micgnd2) mic connected\n");
1823
1824 /* Unground MICGND2 */
1825 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
1826 NAU8825_SPKR_ENGND1 | NAU8825_SPKR_ENGND2,
1827 NAU8825_SPKR_ENGND1);
1828 /* Attach 2kOhm Resistor from MICBIAS to MICGND2 */
1829 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1830 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1831 NAU8825_MICBIAS_JKSLV);
1832 /* Attach SARADC to MICGND2 */
1833 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1834 NAU8825_SAR_INPUT_MASK,
1835 NAU8825_SAR_INPUT_JKSLV);
1836 } else {
1837 dev_err(nau8825->dev, "Jack broken.\n");
1838 return -EINVAL;
1839 }
1840
1841 return 0;
1842 }
1843
nau8825_jack_insert(struct nau8825 * nau8825)1844 static int nau8825_jack_insert(struct nau8825 *nau8825)
1845 {
1846 struct regmap *regmap = nau8825->regmap;
1847 struct snd_soc_dapm_context *dapm = nau8825->dapm;
1848 int jack_status_reg, mic_detected;
1849 int type = 0;
1850
1851 regmap_read(regmap, NAU8825_REG_GENERAL_STATUS, &jack_status_reg);
1852 mic_detected = (jack_status_reg >> 10) & 3;
1853 /* The JKSLV and JKR2 all detected in high impedance headset */
1854 if (mic_detected == 0x3)
1855 nau8825->high_imped = true;
1856 else
1857 nau8825->high_imped = false;
1858
1859 switch (mic_detected) {
1860 case 0:
1861 /* no mic */
1862 type = SND_JACK_HEADPHONE;
1863 break;
1864 case 1:
1865 dev_dbg(nau8825->dev, "OMTP (micgnd1) mic connected\n");
1866 type = SND_JACK_HEADSET;
1867
1868 /* Unground MICGND1 */
1869 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2,
1870 1 << 2);
1871 /* Attach 2kOhm Resistor from MICBIAS to MICGND1 */
1872 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1873 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1874 NAU8825_MICBIAS_JKR2);
1875 /* Attach SARADC to MICGND1 */
1876 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1877 NAU8825_SAR_INPUT_MASK,
1878 NAU8825_SAR_INPUT_JKR2);
1879
1880 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
1881 snd_soc_dapm_force_enable_pin(dapm, "SAR");
1882 snd_soc_dapm_sync(dapm);
1883 break;
1884 case 2:
1885 dev_dbg(nau8825->dev, "CTIA (micgnd2) mic connected\n");
1886 type = SND_JACK_HEADSET;
1887
1888 /* Unground MICGND2 */
1889 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2,
1890 2 << 2);
1891 /* Attach 2kOhm Resistor from MICBIAS to MICGND2 */
1892 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
1893 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
1894 NAU8825_MICBIAS_JKSLV);
1895 /* Attach SARADC to MICGND2 */
1896 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
1897 NAU8825_SAR_INPUT_MASK,
1898 NAU8825_SAR_INPUT_JKSLV);
1899
1900 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
1901 snd_soc_dapm_force_enable_pin(dapm, "SAR");
1902 snd_soc_dapm_sync(dapm);
1903 break;
1904 case 3:
1905 /* Detection failure case */
1906 dev_warn(nau8825->dev,
1907 "Detection failure. Try the manually mechanism for jack type checking.\n");
1908 if (!nau8825_high_imped_detection(nau8825)) {
1909 type = SND_JACK_HEADSET;
1910 snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
1911 snd_soc_dapm_force_enable_pin(dapm, "SAR");
1912 snd_soc_dapm_sync(dapm);
1913 } else
1914 type = SND_JACK_HEADPHONE;
1915 break;
1916 }
1917
1918 /* Update to the default divider of internal clock for power saving */
1919 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
1920 NAU8825_CLK_MCLK_SRC_MASK, 0xf);
1921
1922 /* Disable HSD function */
1923 regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, NAU8825_HSD_AUTO_MODE, 0);
1924
1925 /* Leaving HPOL/R grounded after jack insert by default. They will be
1926 * ungrounded as part of the widget power up sequence at the beginning
1927 * of playback to reduce pop.
1928 */
1929 return type;
1930 }
1931
1932 #define NAU8825_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \
1933 SND_JACK_BTN_2 | SND_JACK_BTN_3)
1934
nau8825_interrupt(int irq,void * data)1935 static irqreturn_t nau8825_interrupt(int irq, void *data)
1936 {
1937 struct nau8825 *nau8825 = (struct nau8825 *)data;
1938 struct regmap *regmap = nau8825->regmap;
1939 int active_irq, clear_irq = 0, event = 0, event_mask = 0;
1940
1941 if (regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq)) {
1942 dev_err(nau8825->dev, "failed to read irq status\n");
1943 return IRQ_NONE;
1944 }
1945
1946 if ((active_irq & NAU8825_JACK_EJECTION_IRQ_MASK) ==
1947 NAU8825_JACK_EJECTION_DETECTED) {
1948
1949 nau8825_eject_jack(nau8825);
1950 event_mask |= SND_JACK_HEADSET;
1951 clear_irq = NAU8825_JACK_EJECTION_IRQ_MASK;
1952 } else if (active_irq & NAU8825_KEY_SHORT_PRESS_IRQ) {
1953 int key_status;
1954
1955 regmap_read(regmap, NAU8825_REG_INT_CLR_KEY_STATUS,
1956 &key_status);
1957
1958 /* upper 8 bits of the register are for short pressed keys,
1959 * lower 8 bits - for long pressed buttons
1960 */
1961 nau8825->button_pressed = nau8825_button_decode(
1962 key_status >> 8);
1963
1964 event |= nau8825->button_pressed;
1965 event_mask |= NAU8825_BUTTONS;
1966 clear_irq = NAU8825_KEY_SHORT_PRESS_IRQ;
1967 } else if (active_irq & NAU8825_KEY_RELEASE_IRQ) {
1968 event_mask = NAU8825_BUTTONS;
1969 clear_irq = NAU8825_KEY_RELEASE_IRQ;
1970 } else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) {
1971 if (nau8825_is_jack_inserted(regmap)) {
1972 event |= nau8825_jack_insert(nau8825);
1973 if (nau8825->xtalk_enable && !nau8825->high_imped) {
1974 /* Apply the cross talk suppression in the
1975 * headset without high impedance.
1976 */
1977 if (!nau8825->xtalk_protect) {
1978 /* Raise protection for cross talk de-
1979 * tection if no protection before.
1980 * The driver has to cancel the pro-
1981 * cess and restore changes if process
1982 * is ongoing when ejection.
1983 */
1984 int ret;
1985 nau8825->xtalk_protect = true;
1986 ret = nau8825_sema_acquire(nau8825, 0);
1987 if (ret)
1988 nau8825->xtalk_protect = false;
1989 }
1990 /* Startup cross talk detection process */
1991 if (nau8825->xtalk_protect) {
1992 nau8825->xtalk_state =
1993 NAU8825_XTALK_PREPARE;
1994 schedule_work(&nau8825->xtalk_work);
1995 }
1996 } else {
1997 /* The cross talk suppression shouldn't apply
1998 * in the headset with high impedance. Thus,
1999 * relieve the protection raised before.
2000 */
2001 if (nau8825->xtalk_protect) {
2002 nau8825_sema_release(nau8825);
2003 nau8825->xtalk_protect = false;
2004 }
2005 }
2006 } else {
2007 dev_warn(nau8825->dev, "Headset completion IRQ fired but no headset connected\n");
2008 nau8825_eject_jack(nau8825);
2009 }
2010
2011 event_mask |= SND_JACK_HEADSET;
2012 clear_irq = NAU8825_HEADSET_COMPLETION_IRQ;
2013 /* Record the interruption report event for driver to report
2014 * the event later. The jack report will delay until cross
2015 * talk detection process is done.
2016 */
2017 if (nau8825->xtalk_state == NAU8825_XTALK_PREPARE) {
2018 nau8825->xtalk_event = event;
2019 nau8825->xtalk_event_mask = event_mask;
2020 }
2021 } else if (active_irq & NAU8825_IMPEDANCE_MEAS_IRQ) {
2022 /* crosstalk detection enable and process on going */
2023 if (nau8825->xtalk_enable && nau8825->xtalk_protect)
2024 schedule_work(&nau8825->xtalk_work);
2025 clear_irq = NAU8825_IMPEDANCE_MEAS_IRQ;
2026 } else if ((active_irq & NAU8825_JACK_INSERTION_IRQ_MASK) ==
2027 NAU8825_JACK_INSERTION_DETECTED) {
2028 /* One more step to check GPIO status directly. Thus, the
2029 * driver can confirm the real insertion interruption because
2030 * the intrruption at manual mode has bypassed debounce
2031 * circuit which can get rid of unstable status.
2032 */
2033 if (nau8825_is_jack_inserted(regmap)) {
2034 /* Turn off insertion interruption at manual mode */
2035 regmap_update_bits(regmap,
2036 NAU8825_REG_INTERRUPT_DIS_CTRL,
2037 NAU8825_IRQ_INSERT_DIS,
2038 NAU8825_IRQ_INSERT_DIS);
2039 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
2040 NAU8825_IRQ_INSERT_EN, NAU8825_IRQ_INSERT_EN);
2041 /* Enable interruption for jack type detection at audo
2042 * mode which can detect microphone and jack type.
2043 */
2044 nau8825_setup_auto_irq(nau8825);
2045 }
2046 }
2047
2048 if (!clear_irq)
2049 clear_irq = active_irq;
2050 /* clears the rightmost interruption */
2051 regmap_write(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq);
2052
2053 /* Delay jack report until cross talk detection is done. It can avoid
2054 * application to do playback preparation when cross talk detection
2055 * process is still working. Otherwise, the resource like clock and
2056 * power will be issued by them at the same time and conflict happens.
2057 */
2058 if (event_mask && nau8825->xtalk_state == NAU8825_XTALK_DONE)
2059 snd_soc_jack_report(nau8825->jack, event, event_mask);
2060
2061 return IRQ_HANDLED;
2062 }
2063
nau8825_setup_buttons(struct nau8825 * nau8825)2064 static void nau8825_setup_buttons(struct nau8825 *nau8825)
2065 {
2066 struct regmap *regmap = nau8825->regmap;
2067
2068 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
2069 NAU8825_SAR_TRACKING_GAIN_MASK,
2070 nau8825->sar_voltage << NAU8825_SAR_TRACKING_GAIN_SFT);
2071 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
2072 NAU8825_SAR_COMPARE_TIME_MASK,
2073 nau8825->sar_compare_time << NAU8825_SAR_COMPARE_TIME_SFT);
2074 regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
2075 NAU8825_SAR_SAMPLING_TIME_MASK,
2076 nau8825->sar_sampling_time << NAU8825_SAR_SAMPLING_TIME_SFT);
2077
2078 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
2079 NAU8825_KEYDET_LEVELS_NR_MASK,
2080 (nau8825->sar_threshold_num - 1) << NAU8825_KEYDET_LEVELS_NR_SFT);
2081 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
2082 NAU8825_KEYDET_HYSTERESIS_MASK,
2083 nau8825->sar_hysteresis << NAU8825_KEYDET_HYSTERESIS_SFT);
2084 regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
2085 NAU8825_KEYDET_SHORTKEY_DEBOUNCE_MASK,
2086 nau8825->key_debounce << NAU8825_KEYDET_SHORTKEY_DEBOUNCE_SFT);
2087
2088 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_1,
2089 (nau8825->sar_threshold[0] << 8) | nau8825->sar_threshold[1]);
2090 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_2,
2091 (nau8825->sar_threshold[2] << 8) | nau8825->sar_threshold[3]);
2092 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_3,
2093 (nau8825->sar_threshold[4] << 8) | nau8825->sar_threshold[5]);
2094 regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_4,
2095 (nau8825->sar_threshold[6] << 8) | nau8825->sar_threshold[7]);
2096
2097 /* Enable short press and release interruptions */
2098 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
2099 NAU8825_IRQ_KEY_SHORT_PRESS_EN | NAU8825_IRQ_KEY_RELEASE_EN,
2100 0);
2101 }
2102
nau8825_init_regs(struct nau8825 * nau8825)2103 static void nau8825_init_regs(struct nau8825 *nau8825)
2104 {
2105 struct regmap *regmap = nau8825->regmap;
2106
2107 /* Latch IIC LSB value */
2108 regmap_write(regmap, NAU8825_REG_IIC_ADDR_SET, 0x0001);
2109 /* Enable Bias/Vmid */
2110 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
2111 NAU8825_BIAS_VMID, NAU8825_BIAS_VMID);
2112 regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
2113 NAU8825_GLOBAL_BIAS_EN, NAU8825_GLOBAL_BIAS_EN);
2114
2115 /* VMID Tieoff */
2116 regmap_update_bits(regmap, NAU8825_REG_BIAS_ADJ,
2117 NAU8825_BIAS_VMID_SEL_MASK,
2118 nau8825->vref_impedance << NAU8825_BIAS_VMID_SEL_SFT);
2119 /* Disable Boost Driver, Automatic Short circuit protection enable */
2120 regmap_update_bits(regmap, NAU8825_REG_BOOST,
2121 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS |
2122 NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN,
2123 NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS |
2124 NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN);
2125
2126 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
2127 NAU8825_JKDET_OUTPUT_EN,
2128 nau8825->jkdet_enable ? 0 : NAU8825_JKDET_OUTPUT_EN);
2129 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
2130 NAU8825_JKDET_PULL_EN,
2131 nau8825->jkdet_pull_enable ? 0 : NAU8825_JKDET_PULL_EN);
2132 regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
2133 NAU8825_JKDET_PULL_UP,
2134 nau8825->jkdet_pull_up ? NAU8825_JKDET_PULL_UP : 0);
2135 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
2136 NAU8825_JACK_POLARITY,
2137 /* jkdet_polarity - 1 is for active-low */
2138 nau8825->jkdet_polarity ? 0 : NAU8825_JACK_POLARITY);
2139
2140 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
2141 NAU8825_JACK_INSERT_DEBOUNCE_MASK,
2142 nau8825->jack_insert_debounce << NAU8825_JACK_INSERT_DEBOUNCE_SFT);
2143 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
2144 NAU8825_JACK_EJECT_DEBOUNCE_MASK,
2145 nau8825->jack_eject_debounce << NAU8825_JACK_EJECT_DEBOUNCE_SFT);
2146
2147 /* Pull up IRQ pin */
2148 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
2149 NAU8825_IRQ_PIN_PULLUP | NAU8825_IRQ_PIN_PULL_EN,
2150 NAU8825_IRQ_PIN_PULLUP | NAU8825_IRQ_PIN_PULL_EN);
2151 /* Mask unneeded IRQs: 1 - disable, 0 - enable */
2152 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 0x7ff, 0x7ff);
2153
2154 regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
2155 NAU8825_MICBIAS_VOLTAGE_MASK, nau8825->micbias_voltage);
2156
2157 if (nau8825->sar_threshold_num)
2158 nau8825_setup_buttons(nau8825);
2159
2160 /* Default oversampling/decimations settings are unusable
2161 * (audible hiss). Set it to something better.
2162 */
2163 regmap_update_bits(regmap, NAU8825_REG_ADC_RATE,
2164 NAU8825_ADC_SYNC_DOWN_MASK | NAU8825_ADC_SINC4_EN,
2165 NAU8825_ADC_SYNC_DOWN_64);
2166 regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1,
2167 NAU8825_DAC_OVERSAMPLE_MASK, NAU8825_DAC_OVERSAMPLE_64);
2168 /* Disable DACR/L power */
2169 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825)
2170 regmap_update_bits(regmap, NAU8825_REG_CHARGE_PUMP,
2171 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
2172 NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
2173 /* Enable TESTDAC. This sets the analog DAC inputs to a '0' input
2174 * signal to avoid any glitches due to power up transients in both
2175 * the analog and digital DAC circuit.
2176 */
2177 regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
2178 NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
2179 /* CICCLP off */
2180 regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1,
2181 NAU8825_DAC_CLIP_OFF, NAU8825_DAC_CLIP_OFF);
2182
2183 /* Class AB bias current to 2x, DAC Capacitor enable MSB/LSB */
2184 regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_2,
2185 NAU8825_HP_NON_CLASSG_CURRENT_2xADJ |
2186 NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB,
2187 NAU8825_HP_NON_CLASSG_CURRENT_2xADJ |
2188 NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB);
2189 /* Class G timer 64ms */
2190 regmap_update_bits(regmap, NAU8825_REG_CLASSG_CTRL,
2191 NAU8825_CLASSG_TIMER_MASK,
2192 0x20 << NAU8825_CLASSG_TIMER_SFT);
2193 /* DAC clock delay 2ns, VREF */
2194 regmap_update_bits(regmap, NAU8825_REG_RDAC,
2195 NAU8825_RDAC_CLK_DELAY_MASK | NAU8825_RDAC_VREF_MASK,
2196 (0x2 << NAU8825_RDAC_CLK_DELAY_SFT) |
2197 (0x3 << NAU8825_RDAC_VREF_SFT));
2198 /* Config L/R channel */
2199 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL,
2200 NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_L);
2201 regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL,
2202 NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_R);
2203 /* Disable short Frame Sync detection logic */
2204 regmap_update_bits(regmap, NAU8825_REG_LEFT_TIME_SLOT,
2205 NAU8825_DIS_FS_SHORT_DET, NAU8825_DIS_FS_SHORT_DET);
2206 /* ADCDAT IO drive strength control */
2207 regmap_update_bits(regmap, NAU8825_REG_CHARGE_PUMP,
2208 NAU8825_ADCOUT_DS_MASK,
2209 nau8825->adcout_ds << NAU8825_ADCOUT_DS_SFT);
2210 }
2211
2212 static const struct regmap_config nau8825_regmap_config = {
2213 .val_bits = NAU8825_REG_DATA_LEN,
2214 .reg_bits = NAU8825_REG_ADDR_LEN,
2215
2216 .max_register = NAU8825_REG_MAX,
2217 .readable_reg = nau8825_readable_reg,
2218 .writeable_reg = nau8825_writeable_reg,
2219 .volatile_reg = nau8825_volatile_reg,
2220
2221 .cache_type = REGCACHE_RBTREE,
2222 .reg_defaults = nau8825_reg_defaults,
2223 .num_reg_defaults = ARRAY_SIZE(nau8825_reg_defaults),
2224 };
2225
nau8825_component_probe(struct snd_soc_component * component)2226 static int nau8825_component_probe(struct snd_soc_component *component)
2227 {
2228 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
2229 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
2230
2231 nau8825->dapm = dapm;
2232
2233 return 0;
2234 }
2235
nau8825_component_remove(struct snd_soc_component * component)2236 static void nau8825_component_remove(struct snd_soc_component *component)
2237 {
2238 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
2239
2240 /* Cancel and reset cross tak suppresstion detection funciton */
2241 nau8825_xtalk_cancel(nau8825);
2242 }
2243
2244 /**
2245 * nau8825_calc_fll_param - Calculate FLL parameters.
2246 * @fll_in: external clock provided to codec.
2247 * @fs: sampling rate.
2248 * @fll_param: Pointer to structure of FLL parameters.
2249 *
2250 * Calculate FLL parameters to configure codec.
2251 *
2252 * Returns 0 for success or negative error code.
2253 */
nau8825_calc_fll_param(unsigned int fll_in,unsigned int fs,struct nau8825_fll * fll_param)2254 static int nau8825_calc_fll_param(unsigned int fll_in, unsigned int fs,
2255 struct nau8825_fll *fll_param)
2256 {
2257 u64 fvco, fvco_max;
2258 unsigned int fref, i, fvco_sel;
2259
2260 /* Ensure the reference clock frequency (FREF) is <= 13.5MHz by dividing
2261 * freq_in by 1, 2, 4, or 8 using FLL pre-scalar.
2262 * FREF = freq_in / NAU8825_FLL_REF_DIV_MASK
2263 */
2264 for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) {
2265 fref = fll_in / fll_pre_scalar[i].param;
2266 if (fref <= NAU_FREF_MAX)
2267 break;
2268 }
2269 if (i == ARRAY_SIZE(fll_pre_scalar))
2270 return -EINVAL;
2271 fll_param->clk_ref_div = fll_pre_scalar[i].val;
2272
2273 /* Choose the FLL ratio based on FREF */
2274 for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) {
2275 if (fref >= fll_ratio[i].param)
2276 break;
2277 }
2278 if (i == ARRAY_SIZE(fll_ratio))
2279 return -EINVAL;
2280 fll_param->ratio = fll_ratio[i].val;
2281
2282 /* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs.
2283 * FDCO must be within the 90MHz - 124MHz or the FFL cannot be
2284 * guaranteed across the full range of operation.
2285 * FDCO = freq_out * 2 * mclk_src_scaling
2286 */
2287 fvco_max = 0;
2288 fvco_sel = ARRAY_SIZE(mclk_src_scaling);
2289 for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
2290 fvco = 256ULL * fs * 2 * mclk_src_scaling[i].param;
2291 if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX &&
2292 fvco_max < fvco) {
2293 fvco_max = fvco;
2294 fvco_sel = i;
2295 }
2296 }
2297 if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel)
2298 return -EINVAL;
2299 fll_param->mclk_src = mclk_src_scaling[fvco_sel].val;
2300
2301 /* Calculate the FLL 10-bit integer input and the FLL 16-bit fractional
2302 * input based on FDCO, FREF and FLL ratio.
2303 */
2304 fvco = div_u64(fvco_max << fll_param->fll_frac_num, fref * fll_param->ratio);
2305 fll_param->fll_int = (fvco >> fll_param->fll_frac_num) & 0x3FF;
2306 if (fll_param->fll_frac_num == 16)
2307 fll_param->fll_frac = fvco & 0xFFFF;
2308 else
2309 fll_param->fll_frac = fvco & 0xFFFFFF;
2310 return 0;
2311 }
2312
nau8825_fll_apply(struct nau8825 * nau8825,struct nau8825_fll * fll_param)2313 static void nau8825_fll_apply(struct nau8825 *nau8825,
2314 struct nau8825_fll *fll_param)
2315 {
2316 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
2317 NAU8825_CLK_SRC_MASK | NAU8825_CLK_MCLK_SRC_MASK,
2318 NAU8825_CLK_SRC_MCLK | fll_param->mclk_src);
2319 /* Make DSP operate at high speed for better performance. */
2320 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1,
2321 NAU8825_FLL_RATIO_MASK | NAU8825_ICTRL_LATCH_MASK,
2322 fll_param->ratio | (0x6 << NAU8825_ICTRL_LATCH_SFT));
2323 /* FLL 16/24 bit fractional input */
2324 if (fll_param->fll_frac_num == 16)
2325 regmap_write(nau8825->regmap, NAU8825_REG_FLL2,
2326 fll_param->fll_frac);
2327 else {
2328 regmap_write(nau8825->regmap, NAU8825_REG_FLL2_LOWER,
2329 fll_param->fll_frac & 0xffff);
2330 regmap_write(nau8825->regmap, NAU8825_REG_FLL2_UPPER,
2331 (fll_param->fll_frac >> 16) & 0xff);
2332 }
2333 /* FLL 10-bit integer input */
2334 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL3,
2335 NAU8825_FLL_INTEGER_MASK, fll_param->fll_int);
2336 /* FLL pre-scaler */
2337 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL4,
2338 NAU8825_FLL_REF_DIV_MASK,
2339 fll_param->clk_ref_div << NAU8825_FLL_REF_DIV_SFT);
2340 /* select divided VCO input */
2341 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
2342 NAU8825_FLL_CLK_SW_MASK, NAU8825_FLL_CLK_SW_REF);
2343 /* Disable free-running mode */
2344 regmap_update_bits(nau8825->regmap,
2345 NAU8825_REG_FLL6, NAU8825_DCO_EN, 0);
2346 if (fll_param->fll_frac) {
2347 /* set FLL loop filter enable and cutoff frequency at 500Khz */
2348 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
2349 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
2350 NAU8825_FLL_FTR_SW_MASK,
2351 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
2352 NAU8825_FLL_FTR_SW_FILTER);
2353 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
2354 NAU8825_SDM_EN | NAU8825_CUTOFF500,
2355 NAU8825_SDM_EN | NAU8825_CUTOFF500);
2356 } else {
2357 /* disable FLL loop filter and cutoff frequency */
2358 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
2359 NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
2360 NAU8825_FLL_FTR_SW_MASK, NAU8825_FLL_FTR_SW_ACCU);
2361 regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
2362 NAU8825_SDM_EN | NAU8825_CUTOFF500, 0);
2363 }
2364 }
2365
2366 /* freq_out must be 256*Fs in order to achieve the best performance */
nau8825_set_pll(struct snd_soc_component * component,int pll_id,int source,unsigned int freq_in,unsigned int freq_out)2367 static int nau8825_set_pll(struct snd_soc_component *component, int pll_id, int source,
2368 unsigned int freq_in, unsigned int freq_out)
2369 {
2370 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
2371 struct nau8825_fll fll_param;
2372 int ret, fs;
2373
2374 if (nau8825->sw_id == NAU8825_SOFTWARE_ID_NAU8825)
2375 fll_param.fll_frac_num = 16;
2376 else
2377 fll_param.fll_frac_num = 24;
2378
2379 fs = freq_out / 256;
2380 ret = nau8825_calc_fll_param(freq_in, fs, &fll_param);
2381 if (ret < 0) {
2382 dev_err(component->dev, "Unsupported input clock %d\n", freq_in);
2383 return ret;
2384 }
2385 dev_dbg(component->dev, "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n",
2386 fll_param.mclk_src, fll_param.ratio, fll_param.fll_frac,
2387 fll_param.fll_int, fll_param.clk_ref_div);
2388
2389 nau8825_fll_apply(nau8825, &fll_param);
2390 mdelay(2);
2391 regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
2392 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
2393 return 0;
2394 }
2395
nau8825_mclk_prepare(struct nau8825 * nau8825,unsigned int freq)2396 static int nau8825_mclk_prepare(struct nau8825 *nau8825, unsigned int freq)
2397 {
2398 int ret;
2399
2400 nau8825->mclk = devm_clk_get(nau8825->dev, "mclk");
2401 if (IS_ERR(nau8825->mclk)) {
2402 dev_info(nau8825->dev, "No 'mclk' clock found, assume MCLK is managed externally");
2403 return 0;
2404 }
2405
2406 if (!nau8825->mclk_freq) {
2407 ret = clk_prepare_enable(nau8825->mclk);
2408 if (ret) {
2409 dev_err(nau8825->dev, "Unable to prepare codec mclk\n");
2410 return ret;
2411 }
2412 }
2413
2414 if (nau8825->mclk_freq != freq) {
2415 freq = clk_round_rate(nau8825->mclk, freq);
2416 ret = clk_set_rate(nau8825->mclk, freq);
2417 if (ret) {
2418 dev_err(nau8825->dev, "Unable to set mclk rate\n");
2419 return ret;
2420 }
2421 nau8825->mclk_freq = freq;
2422 }
2423
2424 return 0;
2425 }
2426
nau8825_configure_mclk_as_sysclk(struct regmap * regmap)2427 static void nau8825_configure_mclk_as_sysclk(struct regmap *regmap)
2428 {
2429 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2430 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_MCLK);
2431 regmap_update_bits(regmap, NAU8825_REG_FLL6,
2432 NAU8825_DCO_EN, 0);
2433 /* Make DSP operate as default setting for power saving. */
2434 regmap_update_bits(regmap, NAU8825_REG_FLL1,
2435 NAU8825_ICTRL_LATCH_MASK, 0);
2436 }
2437
nau8825_configure_sysclk(struct nau8825 * nau8825,int clk_id,unsigned int freq)2438 static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id,
2439 unsigned int freq)
2440 {
2441 struct regmap *regmap = nau8825->regmap;
2442 int ret;
2443
2444 switch (clk_id) {
2445 case NAU8825_CLK_DIS:
2446 /* Clock provided externally and disable internal VCO clock */
2447 nau8825_configure_mclk_as_sysclk(regmap);
2448 if (nau8825->mclk_freq) {
2449 clk_disable_unprepare(nau8825->mclk);
2450 nau8825->mclk_freq = 0;
2451 }
2452
2453 break;
2454 case NAU8825_CLK_MCLK:
2455 /* Acquire the semaphore to synchronize the playback and
2456 * interrupt handler. In order to avoid the playback inter-
2457 * fered by cross talk process, the driver make the playback
2458 * preparation halted until cross talk process finish.
2459 */
2460 nau8825_sema_acquire(nau8825, 3 * HZ);
2461 nau8825_configure_mclk_as_sysclk(regmap);
2462 /* MCLK not changed by clock tree */
2463 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2464 NAU8825_CLK_MCLK_SRC_MASK, 0);
2465 /* Release the semaphore. */
2466 nau8825_sema_release(nau8825);
2467
2468 ret = nau8825_mclk_prepare(nau8825, freq);
2469 if (ret)
2470 return ret;
2471
2472 break;
2473 case NAU8825_CLK_INTERNAL:
2474 if (nau8825_is_jack_inserted(nau8825->regmap)) {
2475 regmap_update_bits(regmap, NAU8825_REG_FLL6,
2476 NAU8825_DCO_EN, NAU8825_DCO_EN);
2477 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2478 NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
2479 /* Decrease the VCO frequency and make DSP operate
2480 * as default setting for power saving.
2481 */
2482 regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
2483 NAU8825_CLK_MCLK_SRC_MASK, 0xf);
2484 regmap_update_bits(regmap, NAU8825_REG_FLL1,
2485 NAU8825_ICTRL_LATCH_MASK |
2486 NAU8825_FLL_RATIO_MASK, 0x10);
2487 regmap_update_bits(regmap, NAU8825_REG_FLL6,
2488 NAU8825_SDM_EN, NAU8825_SDM_EN);
2489 } else {
2490 /* The clock turns off intentionally for power saving
2491 * when no headset connected.
2492 */
2493 nau8825_configure_mclk_as_sysclk(regmap);
2494 dev_warn(nau8825->dev, "Disable clock for power saving when no headset connected\n");
2495 }
2496 if (nau8825->mclk_freq) {
2497 clk_disable_unprepare(nau8825->mclk);
2498 nau8825->mclk_freq = 0;
2499 }
2500
2501 break;
2502 case NAU8825_CLK_FLL_MCLK:
2503 /* Acquire the semaphore to synchronize the playback and
2504 * interrupt handler. In order to avoid the playback inter-
2505 * fered by cross talk process, the driver make the playback
2506 * preparation halted until cross talk process finish.
2507 */
2508 nau8825_sema_acquire(nau8825, 3 * HZ);
2509 /* Higher FLL reference input frequency can only set lower
2510 * gain error, such as 0000 for input reference from MCLK
2511 * 12.288Mhz.
2512 */
2513 regmap_update_bits(regmap, NAU8825_REG_FLL3,
2514 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK,
2515 NAU8825_FLL_CLK_SRC_MCLK | 0);
2516 /* Release the semaphore. */
2517 nau8825_sema_release(nau8825);
2518
2519 ret = nau8825_mclk_prepare(nau8825, freq);
2520 if (ret)
2521 return ret;
2522
2523 break;
2524 case NAU8825_CLK_FLL_BLK:
2525 /* Acquire the semaphore to synchronize the playback and
2526 * interrupt handler. In order to avoid the playback inter-
2527 * fered by cross talk process, the driver make the playback
2528 * preparation halted until cross talk process finish.
2529 */
2530 nau8825_sema_acquire(nau8825, 3 * HZ);
2531 /* If FLL reference input is from low frequency source,
2532 * higher error gain can apply such as 0xf which has
2533 * the most sensitive gain error correction threshold,
2534 * Therefore, FLL has the most accurate DCO to
2535 * target frequency.
2536 */
2537 regmap_update_bits(regmap, NAU8825_REG_FLL3,
2538 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK,
2539 NAU8825_FLL_CLK_SRC_BLK |
2540 (0xf << NAU8825_GAIN_ERR_SFT));
2541 /* Release the semaphore. */
2542 nau8825_sema_release(nau8825);
2543
2544 if (nau8825->mclk_freq) {
2545 clk_disable_unprepare(nau8825->mclk);
2546 nau8825->mclk_freq = 0;
2547 }
2548
2549 break;
2550 case NAU8825_CLK_FLL_FS:
2551 /* Acquire the semaphore to synchronize the playback and
2552 * interrupt handler. In order to avoid the playback inter-
2553 * fered by cross talk process, the driver make the playback
2554 * preparation halted until cross talk process finish.
2555 */
2556 nau8825_sema_acquire(nau8825, 3 * HZ);
2557 /* If FLL reference input is from low frequency source,
2558 * higher error gain can apply such as 0xf which has
2559 * the most sensitive gain error correction threshold,
2560 * Therefore, FLL has the most accurate DCO to
2561 * target frequency.
2562 */
2563 regmap_update_bits(regmap, NAU8825_REG_FLL3,
2564 NAU8825_FLL_CLK_SRC_MASK | NAU8825_GAIN_ERR_MASK,
2565 NAU8825_FLL_CLK_SRC_FS |
2566 (0xf << NAU8825_GAIN_ERR_SFT));
2567 /* Release the semaphore. */
2568 nau8825_sema_release(nau8825);
2569
2570 if (nau8825->mclk_freq) {
2571 clk_disable_unprepare(nau8825->mclk);
2572 nau8825->mclk_freq = 0;
2573 }
2574
2575 break;
2576 default:
2577 dev_err(nau8825->dev, "Invalid clock id (%d)\n", clk_id);
2578 return -EINVAL;
2579 }
2580
2581 dev_dbg(nau8825->dev, "Sysclk is %dHz and clock id is %d\n", freq,
2582 clk_id);
2583 return 0;
2584 }
2585
nau8825_set_sysclk(struct snd_soc_component * component,int clk_id,int source,unsigned int freq,int dir)2586 static int nau8825_set_sysclk(struct snd_soc_component *component, int clk_id,
2587 int source, unsigned int freq, int dir)
2588 {
2589 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
2590
2591 return nau8825_configure_sysclk(nau8825, clk_id, freq);
2592 }
2593
nau8825_resume_setup(struct nau8825 * nau8825)2594 static int nau8825_resume_setup(struct nau8825 *nau8825)
2595 {
2596 struct regmap *regmap = nau8825->regmap;
2597
2598 /* Close clock when jack type detection at manual mode */
2599 nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0);
2600
2601 /* Clear all interruption status */
2602 nau8825_int_status_clear_all(regmap);
2603
2604 /* Enable both insertion and ejection interruptions, and then
2605 * bypass de-bounce circuit.
2606 */
2607 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
2608 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN |
2609 NAU8825_IRQ_EJECT_EN | NAU8825_IRQ_INSERT_EN,
2610 NAU8825_IRQ_OUTPUT_EN | NAU8825_IRQ_HEADSET_COMPLETE_EN);
2611 regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
2612 NAU8825_JACK_DET_DB_BYPASS, NAU8825_JACK_DET_DB_BYPASS);
2613 regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_DIS_CTRL,
2614 NAU8825_IRQ_INSERT_DIS | NAU8825_IRQ_EJECT_DIS, 0);
2615
2616 return 0;
2617 }
2618
nau8825_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)2619 static int nau8825_set_bias_level(struct snd_soc_component *component,
2620 enum snd_soc_bias_level level)
2621 {
2622 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
2623 int ret;
2624
2625 switch (level) {
2626 case SND_SOC_BIAS_ON:
2627 break;
2628
2629 case SND_SOC_BIAS_PREPARE:
2630 break;
2631
2632 case SND_SOC_BIAS_STANDBY:
2633 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
2634 if (nau8825->mclk_freq) {
2635 ret = clk_prepare_enable(nau8825->mclk);
2636 if (ret) {
2637 dev_err(nau8825->dev, "Unable to prepare component mclk\n");
2638 return ret;
2639 }
2640 }
2641 /* Setup codec configuration after resume */
2642 nau8825_resume_setup(nau8825);
2643 }
2644 break;
2645
2646 case SND_SOC_BIAS_OFF:
2647 /* Reset the configuration of jack type for detection */
2648 /* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */
2649 regmap_update_bits(nau8825->regmap, NAU8825_REG_MIC_BIAS,
2650 NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0);
2651 /* ground HPL/HPR, MICGRND1/2 */
2652 regmap_update_bits(nau8825->regmap,
2653 NAU8825_REG_HSD_CTRL, 0xf, 0xf);
2654 /* Cancel and reset cross talk detection funciton */
2655 nau8825_xtalk_cancel(nau8825);
2656 /* Turn off all interruptions before system shutdown. Keep the
2657 * interruption quiet before resume setup completes.
2658 */
2659 regmap_write(nau8825->regmap,
2660 NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff);
2661 /* Disable ADC needed for interruptions at audo mode */
2662 regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
2663 NAU8825_ENABLE_ADC, 0);
2664 if (nau8825->mclk_freq)
2665 clk_disable_unprepare(nau8825->mclk);
2666 break;
2667 }
2668 return 0;
2669 }
2670
nau8825_suspend(struct snd_soc_component * component)2671 static int __maybe_unused nau8825_suspend(struct snd_soc_component *component)
2672 {
2673 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
2674
2675 disable_irq(nau8825->irq);
2676 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
2677 /* Power down codec power; don't suppoet button wakeup */
2678 snd_soc_dapm_disable_pin(nau8825->dapm, "SAR");
2679 snd_soc_dapm_disable_pin(nau8825->dapm, "MICBIAS");
2680 snd_soc_dapm_sync(nau8825->dapm);
2681 regcache_cache_only(nau8825->regmap, true);
2682 regcache_mark_dirty(nau8825->regmap);
2683
2684 return 0;
2685 }
2686
nau8825_resume(struct snd_soc_component * component)2687 static int __maybe_unused nau8825_resume(struct snd_soc_component *component)
2688 {
2689 struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component);
2690 int ret;
2691
2692 regcache_cache_only(nau8825->regmap, false);
2693 regcache_sync(nau8825->regmap);
2694 nau8825->xtalk_protect = true;
2695 ret = nau8825_sema_acquire(nau8825, 0);
2696 if (ret)
2697 nau8825->xtalk_protect = false;
2698 enable_irq(nau8825->irq);
2699
2700 return 0;
2701 }
2702
nau8825_set_jack(struct snd_soc_component * component,struct snd_soc_jack * jack,void * data)2703 static int nau8825_set_jack(struct snd_soc_component *component,
2704 struct snd_soc_jack *jack, void *data)
2705 {
2706 return nau8825_enable_jack_detect(component, jack);
2707 }
2708
2709 static const struct snd_soc_component_driver nau8825_component_driver = {
2710 .probe = nau8825_component_probe,
2711 .remove = nau8825_component_remove,
2712 .set_sysclk = nau8825_set_sysclk,
2713 .set_pll = nau8825_set_pll,
2714 .set_bias_level = nau8825_set_bias_level,
2715 .suspend = nau8825_suspend,
2716 .resume = nau8825_resume,
2717 .controls = nau8825_controls,
2718 .num_controls = ARRAY_SIZE(nau8825_controls),
2719 .dapm_widgets = nau8825_dapm_widgets,
2720 .num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets),
2721 .dapm_routes = nau8825_dapm_routes,
2722 .num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes),
2723 .set_jack = nau8825_set_jack,
2724 .suspend_bias_off = 1,
2725 .idle_bias_on = 1,
2726 .use_pmdown_time = 1,
2727 .endianness = 1,
2728 };
2729
nau8825_reset_chip(struct regmap * regmap)2730 static void nau8825_reset_chip(struct regmap *regmap)
2731 {
2732 regmap_write(regmap, NAU8825_REG_RESET, 0x00);
2733 regmap_write(regmap, NAU8825_REG_RESET, 0x00);
2734 }
2735
nau8825_print_device_properties(struct nau8825 * nau8825)2736 static void nau8825_print_device_properties(struct nau8825 *nau8825)
2737 {
2738 int i;
2739 struct device *dev = nau8825->dev;
2740
2741 dev_dbg(dev, "jkdet-enable: %d\n", nau8825->jkdet_enable);
2742 dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8825->jkdet_pull_enable);
2743 dev_dbg(dev, "jkdet-pull-up: %d\n", nau8825->jkdet_pull_up);
2744 dev_dbg(dev, "jkdet-polarity: %d\n", nau8825->jkdet_polarity);
2745 dev_dbg(dev, "micbias-voltage: %d\n", nau8825->micbias_voltage);
2746 dev_dbg(dev, "vref-impedance: %d\n", nau8825->vref_impedance);
2747
2748 dev_dbg(dev, "sar-threshold-num: %d\n", nau8825->sar_threshold_num);
2749 for (i = 0; i < nau8825->sar_threshold_num; i++)
2750 dev_dbg(dev, "sar-threshold[%d]=%d\n", i,
2751 nau8825->sar_threshold[i]);
2752
2753 dev_dbg(dev, "sar-hysteresis: %d\n", nau8825->sar_hysteresis);
2754 dev_dbg(dev, "sar-voltage: %d\n", nau8825->sar_voltage);
2755 dev_dbg(dev, "sar-compare-time: %d\n", nau8825->sar_compare_time);
2756 dev_dbg(dev, "sar-sampling-time: %d\n", nau8825->sar_sampling_time);
2757 dev_dbg(dev, "short-key-debounce: %d\n", nau8825->key_debounce);
2758 dev_dbg(dev, "jack-insert-debounce: %d\n",
2759 nau8825->jack_insert_debounce);
2760 dev_dbg(dev, "jack-eject-debounce: %d\n",
2761 nau8825->jack_eject_debounce);
2762 dev_dbg(dev, "crosstalk-enable: %d\n",
2763 nau8825->xtalk_enable);
2764 dev_dbg(dev, "adcout-drive-strong: %d\n", nau8825->adcout_ds);
2765 dev_dbg(dev, "adc-delay-ms: %d\n", nau8825->adc_delay);
2766 }
2767
nau8825_read_device_properties(struct device * dev,struct nau8825 * nau8825)2768 static int nau8825_read_device_properties(struct device *dev,
2769 struct nau8825 *nau8825) {
2770 int ret;
2771
2772 nau8825->jkdet_enable = device_property_read_bool(dev,
2773 "nuvoton,jkdet-enable");
2774 nau8825->jkdet_pull_enable = device_property_read_bool(dev,
2775 "nuvoton,jkdet-pull-enable");
2776 nau8825->jkdet_pull_up = device_property_read_bool(dev,
2777 "nuvoton,jkdet-pull-up");
2778 ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity",
2779 &nau8825->jkdet_polarity);
2780 if (ret)
2781 nau8825->jkdet_polarity = 1;
2782 ret = device_property_read_u32(dev, "nuvoton,micbias-voltage",
2783 &nau8825->micbias_voltage);
2784 if (ret)
2785 nau8825->micbias_voltage = 6;
2786 ret = device_property_read_u32(dev, "nuvoton,vref-impedance",
2787 &nau8825->vref_impedance);
2788 if (ret)
2789 nau8825->vref_impedance = 2;
2790 ret = device_property_read_u32(dev, "nuvoton,sar-threshold-num",
2791 &nau8825->sar_threshold_num);
2792 if (ret)
2793 nau8825->sar_threshold_num = 4;
2794 ret = device_property_read_u32_array(dev, "nuvoton,sar-threshold",
2795 nau8825->sar_threshold, nau8825->sar_threshold_num);
2796 if (ret) {
2797 nau8825->sar_threshold[0] = 0x08;
2798 nau8825->sar_threshold[1] = 0x12;
2799 nau8825->sar_threshold[2] = 0x26;
2800 nau8825->sar_threshold[3] = 0x73;
2801 }
2802 ret = device_property_read_u32(dev, "nuvoton,sar-hysteresis",
2803 &nau8825->sar_hysteresis);
2804 if (ret)
2805 nau8825->sar_hysteresis = 0;
2806 ret = device_property_read_u32(dev, "nuvoton,sar-voltage",
2807 &nau8825->sar_voltage);
2808 if (ret)
2809 nau8825->sar_voltage = 6;
2810 ret = device_property_read_u32(dev, "nuvoton,sar-compare-time",
2811 &nau8825->sar_compare_time);
2812 if (ret)
2813 nau8825->sar_compare_time = 1;
2814 ret = device_property_read_u32(dev, "nuvoton,sar-sampling-time",
2815 &nau8825->sar_sampling_time);
2816 if (ret)
2817 nau8825->sar_sampling_time = 1;
2818 ret = device_property_read_u32(dev, "nuvoton,short-key-debounce",
2819 &nau8825->key_debounce);
2820 if (ret)
2821 nau8825->key_debounce = 3;
2822 ret = device_property_read_u32(dev, "nuvoton,jack-insert-debounce",
2823 &nau8825->jack_insert_debounce);
2824 if (ret)
2825 nau8825->jack_insert_debounce = 7;
2826 ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce",
2827 &nau8825->jack_eject_debounce);
2828 if (ret)
2829 nau8825->jack_eject_debounce = 0;
2830 nau8825->xtalk_enable = device_property_read_bool(dev,
2831 "nuvoton,crosstalk-enable");
2832 nau8825->adcout_ds = device_property_read_bool(dev, "nuvoton,adcout-drive-strong");
2833 ret = device_property_read_u32(dev, "nuvoton,adc-delay-ms", &nau8825->adc_delay);
2834 if (ret)
2835 nau8825->adc_delay = 125;
2836 if (nau8825->adc_delay < 125 || nau8825->adc_delay > 500)
2837 dev_warn(dev, "Please set the suitable delay time!\n");
2838
2839 nau8825->mclk = devm_clk_get(dev, "mclk");
2840 if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) {
2841 return -EPROBE_DEFER;
2842 } else if (PTR_ERR(nau8825->mclk) == -ENOENT) {
2843 /* The MCLK is managed externally or not used at all */
2844 nau8825->mclk = NULL;
2845 dev_info(dev, "No 'mclk' clock found, assume MCLK is managed externally");
2846 } else if (IS_ERR(nau8825->mclk)) {
2847 return -EINVAL;
2848 }
2849
2850 return 0;
2851 }
2852
nau8825_setup_irq(struct nau8825 * nau8825)2853 static int nau8825_setup_irq(struct nau8825 *nau8825)
2854 {
2855 int ret;
2856
2857 ret = devm_request_threaded_irq(nau8825->dev, nau8825->irq, NULL,
2858 nau8825_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
2859 "nau8825", nau8825);
2860
2861 if (ret) {
2862 dev_err(nau8825->dev, "Cannot request irq %d (%d)\n",
2863 nau8825->irq, ret);
2864 return ret;
2865 }
2866
2867 return 0;
2868 }
2869
nau8825_i2c_probe(struct i2c_client * i2c)2870 static int nau8825_i2c_probe(struct i2c_client *i2c)
2871 {
2872 struct device *dev = &i2c->dev;
2873 struct nau8825 *nau8825 = dev_get_platdata(&i2c->dev);
2874 int ret, value;
2875
2876 if (!nau8825) {
2877 nau8825 = devm_kzalloc(dev, sizeof(*nau8825), GFP_KERNEL);
2878 if (!nau8825)
2879 return -ENOMEM;
2880 ret = nau8825_read_device_properties(dev, nau8825);
2881 if (ret)
2882 return ret;
2883 }
2884
2885 i2c_set_clientdata(i2c, nau8825);
2886
2887 nau8825->regmap = devm_regmap_init_i2c(i2c, &nau8825_regmap_config);
2888 if (IS_ERR(nau8825->regmap))
2889 return PTR_ERR(nau8825->regmap);
2890 nau8825->dev = dev;
2891 nau8825->irq = i2c->irq;
2892 /* Initiate parameters, semaphore and work queue which are needed in
2893 * cross talk suppression measurment function.
2894 */
2895 nau8825->xtalk_state = NAU8825_XTALK_DONE;
2896 nau8825->xtalk_protect = false;
2897 nau8825->xtalk_baktab_initialized = false;
2898 sema_init(&nau8825->xtalk_sem, 1);
2899 INIT_WORK(&nau8825->xtalk_work, nau8825_xtalk_work);
2900
2901 nau8825_print_device_properties(nau8825);
2902
2903 nau8825_reset_chip(nau8825->regmap);
2904 ret = regmap_read(nau8825->regmap, NAU8825_REG_I2C_DEVICE_ID, &value);
2905 if (ret < 0) {
2906 dev_err(dev, "Failed to read device id from the NAU8825: %d\n",
2907 ret);
2908 return ret;
2909 }
2910 nau8825->sw_id = value & NAU8825_SOFTWARE_ID_MASK;
2911 switch (nau8825->sw_id) {
2912 case NAU8825_SOFTWARE_ID_NAU8825:
2913 break;
2914 case NAU8825_SOFTWARE_ID_NAU8825C:
2915 ret = regmap_register_patch(nau8825->regmap, nau8825_regmap_patch,
2916 ARRAY_SIZE(nau8825_regmap_patch));
2917 if (ret) {
2918 dev_err(dev, "Failed to register Rev C patch: %d\n", ret);
2919 return ret;
2920 }
2921 break;
2922 default:
2923 dev_err(dev, "Not a NAU8825 chip\n");
2924 return -ENODEV;
2925 }
2926
2927 nau8825_init_regs(nau8825);
2928
2929 if (i2c->irq)
2930 nau8825_setup_irq(nau8825);
2931
2932 return devm_snd_soc_register_component(&i2c->dev,
2933 &nau8825_component_driver,
2934 &nau8825_dai, 1);
2935 }
2936
nau8825_i2c_remove(struct i2c_client * client)2937 static void nau8825_i2c_remove(struct i2c_client *client)
2938 {}
2939
2940 static const struct i2c_device_id nau8825_i2c_ids[] = {
2941 { "nau8825", 0 },
2942 { }
2943 };
2944 MODULE_DEVICE_TABLE(i2c, nau8825_i2c_ids);
2945
2946 #ifdef CONFIG_OF
2947 static const struct of_device_id nau8825_of_ids[] = {
2948 { .compatible = "nuvoton,nau8825", },
2949 {}
2950 };
2951 MODULE_DEVICE_TABLE(of, nau8825_of_ids);
2952 #endif
2953
2954 #ifdef CONFIG_ACPI
2955 static const struct acpi_device_id nau8825_acpi_match[] = {
2956 { "10508825", 0 },
2957 {},
2958 };
2959 MODULE_DEVICE_TABLE(acpi, nau8825_acpi_match);
2960 #endif
2961
2962 static struct i2c_driver nau8825_driver = {
2963 .driver = {
2964 .name = "nau8825",
2965 .of_match_table = of_match_ptr(nau8825_of_ids),
2966 .acpi_match_table = ACPI_PTR(nau8825_acpi_match),
2967 },
2968 .probe = nau8825_i2c_probe,
2969 .remove = nau8825_i2c_remove,
2970 .id_table = nau8825_i2c_ids,
2971 };
2972 module_i2c_driver(nau8825_driver);
2973
2974 MODULE_DESCRIPTION("ASoC nau8825 driver");
2975 MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>");
2976 MODULE_LICENSE("GPL");
2977