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1// SPDX-License-Identifier: GPL-2.0-only
2//
3// nau8821.c -- Nuvoton NAU88L21 audio codec driver
4//
5// Copyright 2021 Nuvoton Technology Corp.
6// Author: John Hsu <kchsu0@nuvoton.com>
7// Co-author: Seven Lee <wtli@nuvoton.com>
8//
9
10#include <linux/acpi.h>
11#include <linux/clk.h>
12#include <linux/delay.h>
13#include <linux/dmi.h>
14#include <linux/init.h>
15#include <linux/i2c.h>
16#include <linux/module.h>
17#include <linux/math64.h>
18#include <linux/regmap.h>
19#include <linux/slab.h>
20#include <sound/core.h>
21#include <sound/initval.h>
22#include <sound/jack.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/tlv.h>
27#include "nau8821.h"
28
29#define NAU8821_JD_ACTIVE_HIGH BIT(0)
30
31static int nau8821_quirk;
32static int quirk_override = -1;
33module_param_named(quirk, quirk_override, uint, 0444);
34MODULE_PARM_DESC(quirk, "Board-specific quirk override");
35
36#define NAU_FREF_MAX 13500000
37#define NAU_FVCO_MAX 100000000
38#define NAU_FVCO_MIN 90000000
39
40#define NAU8821_BUTTON SND_JACK_BTN_0
41
42/* the maximum frequency of CLK_ADC and CLK_DAC */
43#define CLK_DA_AD_MAX 6144000
44
45static int nau8821_configure_sysclk(struct nau8821 *nau8821,
46 int clk_id, unsigned int freq);
47static bool nau8821_is_jack_inserted(struct regmap *regmap);
48
49struct nau8821_fll {
50 int mclk_src;
51 int ratio;
52 int fll_frac;
53 int fll_int;
54 int clk_ref_div;
55};
56
57struct nau8821_fll_attr {
58 unsigned int param;
59 unsigned int val;
60};
61
62/* scaling for mclk from sysclk_src output */
63static const struct nau8821_fll_attr mclk_src_scaling[] = {
64 { 1, 0x0 },
65 { 2, 0x2 },
66 { 4, 0x3 },
67 { 8, 0x4 },
68 { 16, 0x5 },
69 { 32, 0x6 },
70 { 3, 0x7 },
71 { 6, 0xa },
72 { 12, 0xb },
73 { 24, 0xc },
74 { 48, 0xd },
75 { 96, 0xe },
76 { 5, 0xf },
77};
78
79/* ratio for input clk freq */
80static const struct nau8821_fll_attr fll_ratio[] = {
81 { 512000, 0x01 },
82 { 256000, 0x02 },
83 { 128000, 0x04 },
84 { 64000, 0x08 },
85 { 32000, 0x10 },
86 { 8000, 0x20 },
87 { 4000, 0x40 },
88};
89
90static const struct nau8821_fll_attr fll_pre_scalar[] = {
91 { 0, 0x0 },
92 { 1, 0x1 },
93 { 2, 0x2 },
94 { 3, 0x3 },
95};
96
97/* over sampling rate */
98struct nau8821_osr_attr {
99 unsigned int osr;
100 unsigned int clk_src;
101};
102
103static const struct nau8821_osr_attr osr_dac_sel[] = {
104 { 64, 2 }, /* OSR 64, SRC 1/4 */
105 { 256, 0 }, /* OSR 256, SRC 1 */
106 { 128, 1 }, /* OSR 128, SRC 1/2 */
107 { 0, 0 },
108 { 32, 3 }, /* OSR 32, SRC 1/8 */
109};
110
111static const struct nau8821_osr_attr osr_adc_sel[] = {
112 { 32, 3 }, /* OSR 32, SRC 1/8 */
113 { 64, 2 }, /* OSR 64, SRC 1/4 */
114 { 128, 1 }, /* OSR 128, SRC 1/2 */
115 { 256, 0 }, /* OSR 256, SRC 1 */
116};
117
118struct nau8821_dmic_speed {
119 unsigned int param;
120 unsigned int val;
121};
122
123static const struct nau8821_dmic_speed dmic_speed_sel[] = {
124 { 0, 0x0 }, /*SPEED 1, SRC 1 */
125 { 1, 0x1 }, /*SPEED 2, SRC 1/2 */
126 { 2, 0x2 }, /*SPEED 4, SRC 1/4 */
127 { 3, 0x3 }, /*SPEED 8, SRC 1/8 */
128};
129
130static const struct reg_default nau8821_reg_defaults[] = {
131 { NAU8821_R01_ENA_CTRL, 0x00ff },
132 { NAU8821_R03_CLK_DIVIDER, 0x0050 },
133 { NAU8821_R04_FLL1, 0x0 },
134 { NAU8821_R05_FLL2, 0x00bc },
135 { NAU8821_R06_FLL3, 0x0008 },
136 { NAU8821_R07_FLL4, 0x0010 },
137 { NAU8821_R08_FLL5, 0x4000 },
138 { NAU8821_R09_FLL6, 0x6900 },
139 { NAU8821_R0A_FLL7, 0x0031 },
140 { NAU8821_R0B_FLL8, 0x26e9 },
141 { NAU8821_R0D_JACK_DET_CTRL, 0x0 },
142 { NAU8821_R0F_INTERRUPT_MASK, 0x0 },
143 { NAU8821_R12_INTERRUPT_DIS_CTRL, 0xffff },
144 { NAU8821_R13_DMIC_CTRL, 0x0 },
145 { NAU8821_R1A_GPIO12_CTRL, 0x0 },
146 { NAU8821_R1B_TDM_CTRL, 0x0 },
147 { NAU8821_R1C_I2S_PCM_CTRL1, 0x000a },
148 { NAU8821_R1D_I2S_PCM_CTRL2, 0x8010 },
149 { NAU8821_R1E_LEFT_TIME_SLOT, 0x0 },
150 { NAU8821_R1F_RIGHT_TIME_SLOT, 0x0 },
151 { NAU8821_R21_BIQ0_COF1, 0x0 },
152 { NAU8821_R22_BIQ0_COF2, 0x0 },
153 { NAU8821_R23_BIQ0_COF3, 0x0 },
154 { NAU8821_R24_BIQ0_COF4, 0x0 },
155 { NAU8821_R25_BIQ0_COF5, 0x0 },
156 { NAU8821_R26_BIQ0_COF6, 0x0 },
157 { NAU8821_R27_BIQ0_COF7, 0x0 },
158 { NAU8821_R28_BIQ0_COF8, 0x0 },
159 { NAU8821_R29_BIQ0_COF9, 0x0 },
160 { NAU8821_R2A_BIQ0_COF10, 0x0 },
161 { NAU8821_R2B_ADC_RATE, 0x0002 },
162 { NAU8821_R2C_DAC_CTRL1, 0x0082 },
163 { NAU8821_R2D_DAC_CTRL2, 0x0 },
164 { NAU8821_R2F_DAC_DGAIN_CTRL, 0x0 },
165 { NAU8821_R30_ADC_DGAIN_CTRL, 0x0 },
166 { NAU8821_R31_MUTE_CTRL, 0x0 },
167 { NAU8821_R32_HSVOL_CTRL, 0x0 },
168 { NAU8821_R34_DACR_CTRL, 0xcfcf },
169 { NAU8821_R35_ADC_DGAIN_CTRL1, 0xcfcf },
170 { NAU8821_R36_ADC_DRC_KNEE_IP12, 0x1486 },
171 { NAU8821_R37_ADC_DRC_KNEE_IP34, 0x0f12 },
172 { NAU8821_R38_ADC_DRC_SLOPES, 0x25ff },
173 { NAU8821_R39_ADC_DRC_ATKDCY, 0x3457 },
174 { NAU8821_R3A_DAC_DRC_KNEE_IP12, 0x1486 },
175 { NAU8821_R3B_DAC_DRC_KNEE_IP34, 0x0f12 },
176 { NAU8821_R3C_DAC_DRC_SLOPES, 0x25f9 },
177 { NAU8821_R3D_DAC_DRC_ATKDCY, 0x3457 },
178 { NAU8821_R41_BIQ1_COF1, 0x0 },
179 { NAU8821_R42_BIQ1_COF2, 0x0 },
180 { NAU8821_R43_BIQ1_COF3, 0x0 },
181 { NAU8821_R44_BIQ1_COF4, 0x0 },
182 { NAU8821_R45_BIQ1_COF5, 0x0 },
183 { NAU8821_R46_BIQ1_COF6, 0x0 },
184 { NAU8821_R47_BIQ1_COF7, 0x0 },
185 { NAU8821_R48_BIQ1_COF8, 0x0 },
186 { NAU8821_R49_BIQ1_COF9, 0x0 },
187 { NAU8821_R4A_BIQ1_COF10, 0x0 },
188 { NAU8821_R4B_CLASSG_CTRL, 0x0 },
189 { NAU8821_R4C_IMM_MODE_CTRL, 0x0 },
190 { NAU8821_R4D_IMM_RMS_L, 0x0 },
191 { NAU8821_R53_OTPDOUT_1, 0xaad8 },
192 { NAU8821_R54_OTPDOUT_2, 0x0002 },
193 { NAU8821_R55_MISC_CTRL, 0x0 },
194 { NAU8821_R66_BIAS_ADJ, 0x0 },
195 { NAU8821_R68_TRIM_SETTINGS, 0x0 },
196 { NAU8821_R69_ANALOG_CONTROL_1, 0x0 },
197 { NAU8821_R6A_ANALOG_CONTROL_2, 0x0 },
198 { NAU8821_R6B_PGA_MUTE, 0x0 },
199 { NAU8821_R71_ANALOG_ADC_1, 0x0011 },
200 { NAU8821_R72_ANALOG_ADC_2, 0x0020 },
201 { NAU8821_R73_RDAC, 0x0008 },
202 { NAU8821_R74_MIC_BIAS, 0x0006 },
203 { NAU8821_R76_BOOST, 0x0 },
204 { NAU8821_R77_FEPGA, 0x0 },
205 { NAU8821_R7E_PGA_GAIN, 0x0 },
206 { NAU8821_R7F_POWER_UP_CONTROL, 0x0 },
207 { NAU8821_R80_CHARGE_PUMP, 0x0 },
208};
209
210static bool nau8821_readable_reg(struct device *dev, unsigned int reg)
211{
212 switch (reg) {
213 case NAU8821_R00_RESET ... NAU8821_R01_ENA_CTRL:
214 case NAU8821_R03_CLK_DIVIDER ... NAU8821_R0B_FLL8:
215 case NAU8821_R0D_JACK_DET_CTRL:
216 case NAU8821_R0F_INTERRUPT_MASK ... NAU8821_R13_DMIC_CTRL:
217 case NAU8821_R1A_GPIO12_CTRL ... NAU8821_R1F_RIGHT_TIME_SLOT:
218 case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2D_DAC_CTRL2:
219 case NAU8821_R2F_DAC_DGAIN_CTRL ... NAU8821_R32_HSVOL_CTRL:
220 case NAU8821_R34_DACR_CTRL ... NAU8821_R3D_DAC_DRC_ATKDCY:
221 case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4F_FUSE_CTRL3:
222 case NAU8821_R51_FUSE_CTRL1:
223 case NAU8821_R53_OTPDOUT_1 ... NAU8821_R55_MISC_CTRL:
224 case NAU8821_R58_I2C_DEVICE_ID ... NAU8821_R5A_SOFTWARE_RST:
225 case NAU8821_R66_BIAS_ADJ:
226 case NAU8821_R68_TRIM_SETTINGS ... NAU8821_R6B_PGA_MUTE:
227 case NAU8821_R71_ANALOG_ADC_1 ... NAU8821_R74_MIC_BIAS:
228 case NAU8821_R76_BOOST ... NAU8821_R77_FEPGA:
229 case NAU8821_R7E_PGA_GAIN ... NAU8821_R82_GENERAL_STATUS:
230 return true;
231 default:
232 return false;
233 }
234}
235
236static bool nau8821_writeable_reg(struct device *dev, unsigned int reg)
237{
238 switch (reg) {
239 case NAU8821_R00_RESET ... NAU8821_R01_ENA_CTRL:
240 case NAU8821_R03_CLK_DIVIDER ... NAU8821_R0B_FLL8:
241 case NAU8821_R0D_JACK_DET_CTRL:
242 case NAU8821_R0F_INTERRUPT_MASK:
243 case NAU8821_R11_INT_CLR_KEY_STATUS ... NAU8821_R13_DMIC_CTRL:
244 case NAU8821_R1A_GPIO12_CTRL ... NAU8821_R1F_RIGHT_TIME_SLOT:
245 case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2D_DAC_CTRL2:
246 case NAU8821_R2F_DAC_DGAIN_CTRL ... NAU8821_R32_HSVOL_CTRL:
247 case NAU8821_R34_DACR_CTRL ... NAU8821_R3D_DAC_DRC_ATKDCY:
248 case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4C_IMM_MODE_CTRL:
249 case NAU8821_R4E_FUSE_CTRL2 ... NAU8821_R4F_FUSE_CTRL3:
250 case NAU8821_R51_FUSE_CTRL1:
251 case NAU8821_R55_MISC_CTRL:
252 case NAU8821_R5A_SOFTWARE_RST:
253 case NAU8821_R66_BIAS_ADJ:
254 case NAU8821_R68_TRIM_SETTINGS ... NAU8821_R6B_PGA_MUTE:
255 case NAU8821_R71_ANALOG_ADC_1 ... NAU8821_R74_MIC_BIAS:
256 case NAU8821_R76_BOOST ... NAU8821_R77_FEPGA:
257 case NAU8821_R7E_PGA_GAIN ... NAU8821_R80_CHARGE_PUMP:
258 return true;
259 default:
260 return false;
261 }
262}
263
264static bool nau8821_volatile_reg(struct device *dev, unsigned int reg)
265{
266 switch (reg) {
267 case NAU8821_R00_RESET:
268 case NAU8821_R10_IRQ_STATUS ... NAU8821_R11_INT_CLR_KEY_STATUS:
269 case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2A_BIQ0_COF10:
270 case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4A_BIQ1_COF10:
271 case NAU8821_R4D_IMM_RMS_L:
272 case NAU8821_R53_OTPDOUT_1 ... NAU8821_R54_OTPDOUT_2:
273 case NAU8821_R58_I2C_DEVICE_ID ... NAU8821_R5A_SOFTWARE_RST:
274 case NAU8821_R81_CHARGE_PUMP_INPUT_READ ... NAU8821_R82_GENERAL_STATUS:
275 return true;
276 default:
277 return false;
278 }
279}
280
281static int nau8821_biq_coeff_get(struct snd_kcontrol *kcontrol,
282 struct snd_ctl_elem_value *ucontrol)
283{
284 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
285 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
286
287 if (!component->regmap)
288 return -EINVAL;
289
290 return regmap_raw_read(component->regmap, NAU8821_R21_BIQ0_COF1,
291 ucontrol->value.bytes.data, params->max);
292}
293
294static int nau8821_biq_coeff_put(struct snd_kcontrol *kcontrol,
295 struct snd_ctl_elem_value *ucontrol)
296{
297 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
298 struct soc_bytes_ext *params = (void *)kcontrol->private_value;
299 void *data;
300 int ret;
301
302 if (!component->regmap)
303 return -EINVAL;
304
305 data = kmemdup(ucontrol->value.bytes.data,
306 params->max, GFP_KERNEL | GFP_DMA);
307 if (!data)
308 return -ENOMEM;
309
310 ret = regmap_raw_write(component->regmap, NAU8821_R21_BIQ0_COF1,
311 data, params->max);
312
313 kfree(data);
314
315 return ret;
316}
317
318static const char * const nau8821_adc_decimation[] = {
319 "32", "64", "128", "256" };
320
321static const struct soc_enum nau8821_adc_decimation_enum =
322 SOC_ENUM_SINGLE(NAU8821_R2B_ADC_RATE, NAU8821_ADC_SYNC_DOWN_SFT,
323 ARRAY_SIZE(nau8821_adc_decimation), nau8821_adc_decimation);
324
325static const char * const nau8821_dac_oversampl[] = {
326 "64", "256", "128", "", "32" };
327
328static const struct soc_enum nau8821_dac_oversampl_enum =
329 SOC_ENUM_SINGLE(NAU8821_R2C_DAC_CTRL1, NAU8821_DAC_OVERSAMPLE_SFT,
330 ARRAY_SIZE(nau8821_dac_oversampl), nau8821_dac_oversampl);
331
332static const char * const nau8821_adc_drc_noise_gate[] = {
333 "1:1", "2:1", "4:1", "8:1" };
334
335static const struct soc_enum nau8821_adc_drc_noise_gate_enum =
336 SOC_ENUM_SINGLE(NAU8821_R38_ADC_DRC_SLOPES, NAU8821_DRC_NG_SLP_ADC_SFT,
337 ARRAY_SIZE(nau8821_adc_drc_noise_gate),
338 nau8821_adc_drc_noise_gate);
339
340static const char * const nau8821_adc_drc_expansion_slope[] = {
341 "1:1", "2:1", "4:1" };
342
343static const struct soc_enum nau8821_adc_drc_expansion_slope_enum =
344 SOC_ENUM_SINGLE(NAU8821_R38_ADC_DRC_SLOPES, NAU8821_DRC_EXP_SLP_ADC_SFT,
345 ARRAY_SIZE(nau8821_adc_drc_expansion_slope),
346 nau8821_adc_drc_expansion_slope);
347
348static const char * const nau8821_adc_drc_lower_region[] = {
349 "0", "1:2", "1:4", "1:8", "1:16", "", "", "1:1" };
350
351static const struct soc_enum nau8821_adc_drc_lower_region_enum =
352 SOC_ENUM_SINGLE(NAU8821_R38_ADC_DRC_SLOPES,
353 NAU8821_DRC_CMP2_SLP_ADC_SFT,
354 ARRAY_SIZE(nau8821_adc_drc_lower_region),
355 nau8821_adc_drc_lower_region);
356
357static const char * const nau8821_higher_region[] = {
358 "0", "1:2", "1:4", "1:8", "1:16", "", "", "1:1" };
359
360static const struct soc_enum nau8821_higher_region_enum =
361 SOC_ENUM_SINGLE(NAU8821_R38_ADC_DRC_SLOPES,
362 NAU8821_DRC_CMP1_SLP_ADC_SFT,
363 ARRAY_SIZE(nau8821_higher_region),
364 nau8821_higher_region);
365
366static const char * const nau8821_limiter_slope[] = {
367 "0", "1:2", "1:4", "1:8", "1:16", "1:32", "1:64", "1:1" };
368
369static const struct soc_enum nau8821_limiter_slope_enum =
370 SOC_ENUM_SINGLE(NAU8821_R38_ADC_DRC_SLOPES,
371 NAU8821_DRC_LMT_SLP_ADC_SFT, ARRAY_SIZE(nau8821_limiter_slope),
372 nau8821_limiter_slope);
373
374static const char * const nau8821_detection_attack_time[] = {
375 "Ts", "3Ts", "7Ts", "15Ts", "31Ts", "63Ts", "127Ts", "255Ts",
376 "", "511Ts" };
377
378static const struct soc_enum nau8821_detection_attack_time_enum =
379 SOC_ENUM_SINGLE(NAU8821_R39_ADC_DRC_ATKDCY,
380 NAU8821_DRC_PK_COEF1_ADC_SFT,
381 ARRAY_SIZE(nau8821_detection_attack_time),
382 nau8821_detection_attack_time);
383
384static const char * const nau8821_detection_release_time[] = {
385 "63Ts", "127Ts", "255Ts", "511Ts", "1023Ts", "2047Ts", "4095Ts",
386 "8191Ts", "", "16383Ts" };
387
388static const struct soc_enum nau8821_detection_release_time_enum =
389 SOC_ENUM_SINGLE(NAU8821_R39_ADC_DRC_ATKDCY,
390 NAU8821_DRC_PK_COEF2_ADC_SFT,
391 ARRAY_SIZE(nau8821_detection_release_time),
392 nau8821_detection_release_time);
393
394static const char * const nau8821_attack_time[] = {
395 "Ts", "3Ts", "7Ts", "15Ts", "31Ts", "63Ts", "127Ts", "255Ts",
396 "511Ts", "1023Ts", "2047Ts", "4095Ts", "8191Ts" };
397
398static const struct soc_enum nau8821_attack_time_enum =
399 SOC_ENUM_SINGLE(NAU8821_R39_ADC_DRC_ATKDCY, NAU8821_DRC_ATK_ADC_SFT,
400 ARRAY_SIZE(nau8821_attack_time), nau8821_attack_time);
401
402static const char * const nau8821_decay_time[] = {
403 "63Ts", "127Ts", "255Ts", "511Ts", "1023Ts", "2047Ts", "4095Ts",
404 "8191Ts", "16383Ts", "32757Ts", "65535Ts" };
405
406static const struct soc_enum nau8821_decay_time_enum =
407 SOC_ENUM_SINGLE(NAU8821_R39_ADC_DRC_ATKDCY, NAU8821_DRC_DCY_ADC_SFT,
408 ARRAY_SIZE(nau8821_decay_time), nau8821_decay_time);
409
410static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -6600, 2400);
411static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0);
412static const DECLARE_TLV_DB_MINMAX(hp_vol_tlv, -900, 0);
413static const DECLARE_TLV_DB_SCALE(playback_vol_tlv, -6600, 50, 1);
414static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600);
415static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -7000, 2400);
416static const DECLARE_TLV_DB_MINMAX(drc_knee4_tlv, -9800, -3500);
417static const DECLARE_TLV_DB_MINMAX(drc_knee3_tlv, -8100, -1800);
418
419static const struct snd_kcontrol_new nau8821_controls[] = {
420 SOC_DOUBLE_TLV("Mic Volume", NAU8821_R35_ADC_DGAIN_CTRL1,
421 NAU8821_ADCL_CH_VOL_SFT, NAU8821_ADCR_CH_VOL_SFT,
422 0xff, 0, adc_vol_tlv),
423 SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8821_R30_ADC_DGAIN_CTRL,
424 12, 8, 0x0f, 0, sidetone_vol_tlv),
425 SOC_DOUBLE_TLV("Headphone Volume", NAU8821_R32_HSVOL_CTRL,
426 NAU8821_HPL_VOL_SFT, NAU8821_HPR_VOL_SFT, 0x3, 1, hp_vol_tlv),
427 SOC_DOUBLE_TLV("Digital Playback Volume", NAU8821_R34_DACR_CTRL,
428 NAU8821_DACL_CH_VOL_SFT, NAU8821_DACR_CH_VOL_SFT,
429 0xcf, 0, playback_vol_tlv),
430 SOC_DOUBLE_TLV("Frontend PGA Volume", NAU8821_R7E_PGA_GAIN,
431 NAU8821_PGA_GAIN_L_SFT, NAU8821_PGA_GAIN_R_SFT,
432 37, 0, fepga_gain_tlv),
433 SOC_DOUBLE_TLV("Headphone Crosstalk Volume",
434 NAU8821_R2F_DAC_DGAIN_CTRL,
435 0, 8, 0xff, 0, crosstalk_vol_tlv),
436 SOC_SINGLE_TLV("ADC DRC KNEE4", NAU8821_R37_ADC_DRC_KNEE_IP34,
437 NAU8821_DRC_KNEE4_IP_ADC_SFT, 0x3f, 1, drc_knee4_tlv),
438 SOC_SINGLE_TLV("ADC DRC KNEE3", NAU8821_R37_ADC_DRC_KNEE_IP34,
439 NAU8821_DRC_KNEE3_IP_ADC_SFT, 0x3f, 1, drc_knee3_tlv),
440
441 SOC_ENUM("ADC DRC Noise Gate", nau8821_adc_drc_noise_gate_enum),
442 SOC_ENUM("ADC DRC Expansion Slope", nau8821_adc_drc_expansion_slope_enum),
443 SOC_ENUM("ADC DRC Lower Region", nau8821_adc_drc_lower_region_enum),
444 SOC_ENUM("ADC DRC Higher Region", nau8821_higher_region_enum),
445 SOC_ENUM("ADC DRC Limiter Slope", nau8821_limiter_slope_enum),
446 SOC_ENUM("ADC DRC Peak Detection Attack Time", nau8821_detection_attack_time_enum),
447 SOC_ENUM("ADC DRC Peak Detection Release Time", nau8821_detection_release_time_enum),
448 SOC_ENUM("ADC DRC Attack Time", nau8821_attack_time_enum),
449 SOC_ENUM("ADC DRC Decay Time", nau8821_decay_time_enum),
450 SOC_SINGLE("DRC Enable Switch", NAU8821_R36_ADC_DRC_KNEE_IP12,
451 NAU8821_DRC_ENA_ADC_SFT, 1, 0),
452
453 SOC_ENUM("ADC Decimation Rate", nau8821_adc_decimation_enum),
454 SOC_ENUM("DAC Oversampling Rate", nau8821_dac_oversampl_enum),
455 SND_SOC_BYTES_EXT("BIQ Coefficients", 20,
456 nau8821_biq_coeff_get, nau8821_biq_coeff_put),
457 SOC_SINGLE("ADC Phase Switch", NAU8821_R1B_TDM_CTRL,
458 NAU8821_ADCPHS_SFT, 1, 0),
459};
460
461static const struct snd_kcontrol_new nau8821_dmic_mode_switch =
462 SOC_DAPM_SINGLE("Switch", NAU8821_R13_DMIC_CTRL,
463 NAU8821_DMIC_EN_SFT, 1, 0);
464
465static int dmic_clock_control(struct snd_soc_dapm_widget *w,
466 struct snd_kcontrol *k, int event)
467{
468 struct snd_soc_component *component =
469 snd_soc_dapm_to_component(w->dapm);
470 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
471 int i, speed_selection = -1, clk_adc_src, clk_adc;
472 unsigned int clk_divider_r03;
473
474 /* The DMIC clock is gotten from adc clock divided by
475 * CLK_DMIC_SRC (1, 2, 4, 8). The clock has to be equal or
476 * less than nau8821->dmic_clk_threshold.
477 */
478 regmap_read(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
479 &clk_divider_r03);
480 clk_adc_src = (clk_divider_r03 & NAU8821_CLK_ADC_SRC_MASK)
481 >> NAU8821_CLK_ADC_SRC_SFT;
482 clk_adc = (nau8821->fs * 256) >> clk_adc_src;
483
484 for (i = 0 ; i < 4 ; i++)
485 if ((clk_adc >> dmic_speed_sel[i].param) <=
486 nau8821->dmic_clk_threshold) {
487 speed_selection = dmic_speed_sel[i].val;
488 break;
489 }
490 if (i == 4)
491 return -EINVAL;
492
493 dev_dbg(nau8821->dev,
494 "clk_adc=%d, dmic_clk_threshold = %d, param=%d, val = %d\n",
495 clk_adc, nau8821->dmic_clk_threshold,
496 dmic_speed_sel[i].param, dmic_speed_sel[i].val);
497 regmap_update_bits(nau8821->regmap, NAU8821_R13_DMIC_CTRL,
498 NAU8821_DMIC_SRC_MASK,
499 (speed_selection << NAU8821_DMIC_SRC_SFT));
500
501 return 0;
502}
503
504static int nau8821_left_adc_event(struct snd_soc_dapm_widget *w,
505 struct snd_kcontrol *kcontrol, int event)
506{
507 struct snd_soc_component *component =
508 snd_soc_dapm_to_component(w->dapm);
509 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
510
511 switch (event) {
512 case SND_SOC_DAPM_POST_PMU:
513 msleep(nau8821->adc_delay);
514 break;
515 case SND_SOC_DAPM_POST_PMD:
516 break;
517 default:
518 return -EINVAL;
519 }
520
521 return 0;
522}
523
524static int nau8821_right_adc_event(struct snd_soc_dapm_widget *w,
525 struct snd_kcontrol *kcontrol, int event)
526{
527 struct snd_soc_component *component =
528 snd_soc_dapm_to_component(w->dapm);
529 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
530
531 switch (event) {
532 case SND_SOC_DAPM_POST_PMU:
533 msleep(nau8821->adc_delay);
534 break;
535 case SND_SOC_DAPM_POST_PMD:
536 break;
537 default:
538 return -EINVAL;
539 }
540
541 return 0;
542}
543
544static int nau8821_pump_event(struct snd_soc_dapm_widget *w,
545 struct snd_kcontrol *kcontrol, int event)
546{
547 struct snd_soc_component *component =
548 snd_soc_dapm_to_component(w->dapm);
549 struct nau8821 *nau8821 =
550 snd_soc_component_get_drvdata(component);
551
552 switch (event) {
553 case SND_SOC_DAPM_POST_PMU:
554 /* Prevent startup click by letting charge pump to ramp up */
555 msleep(20);
556 regmap_update_bits(nau8821->regmap, NAU8821_R80_CHARGE_PUMP,
557 NAU8821_JAMNODCLOW, NAU8821_JAMNODCLOW);
558 break;
559 case SND_SOC_DAPM_PRE_PMD:
560 regmap_update_bits(nau8821->regmap, NAU8821_R80_CHARGE_PUMP,
561 NAU8821_JAMNODCLOW, 0);
562 break;
563 default:
564 return -EINVAL;
565 }
566
567 return 0;
568}
569
570static int nau8821_output_dac_event(struct snd_soc_dapm_widget *w,
571 struct snd_kcontrol *kcontrol, int event)
572{
573 struct snd_soc_component *component =
574 snd_soc_dapm_to_component(w->dapm);
575 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
576
577 switch (event) {
578 case SND_SOC_DAPM_PRE_PMU:
579 /* Disables the TESTDAC to let DAC signal pass through. */
580 regmap_update_bits(nau8821->regmap, NAU8821_R66_BIAS_ADJ,
581 NAU8821_BIAS_TESTDAC_EN, 0);
582 break;
583 case SND_SOC_DAPM_POST_PMD:
584 regmap_update_bits(nau8821->regmap, NAU8821_R66_BIAS_ADJ,
585 NAU8821_BIAS_TESTDAC_EN, NAU8821_BIAS_TESTDAC_EN);
586 break;
587 default:
588 return -EINVAL;
589 }
590
591 return 0;
592}
593
594static int system_clock_control(struct snd_soc_dapm_widget *w,
595 struct snd_kcontrol *k, int event)
596{
597 struct snd_soc_component *component =
598 snd_soc_dapm_to_component(w->dapm);
599 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
600
601 if (SND_SOC_DAPM_EVENT_OFF(event)) {
602 dev_dbg(nau8821->dev, "system clock control : POWER OFF\n");
603 /* Set clock source to disable or internal clock before the
604 * playback or capture end. Codec needs clock for Jack
605 * detection and button press if jack inserted; otherwise,
606 * the clock should be closed.
607 */
608 if (nau8821_is_jack_inserted(nau8821->regmap)) {
609 nau8821_configure_sysclk(nau8821,
610 NAU8821_CLK_INTERNAL, 0);
611 } else {
612 nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0);
613 }
614 }
615 return 0;
616}
617
618static int nau8821_left_fepga_event(struct snd_soc_dapm_widget *w,
619 struct snd_kcontrol *kcontrol, int event)
620{
621 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
622 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
623
624 if (!nau8821->left_input_single_end)
625 return 0;
626
627 switch (event) {
628 case SND_SOC_DAPM_POST_PMU:
629 regmap_update_bits(nau8821->regmap, NAU8821_R77_FEPGA,
630 NAU8821_ACDC_CTRL_MASK | NAU8821_FEPGA_MODEL_MASK,
631 NAU8821_ACDC_VREF_MICN | NAU8821_FEPGA_MODEL_AAF);
632 regmap_update_bits(nau8821->regmap, NAU8821_R76_BOOST,
633 NAU8821_HP_BOOST_DISCHRG_EN, NAU8821_HP_BOOST_DISCHRG_EN);
634 break;
635 case SND_SOC_DAPM_POST_PMD:
636 regmap_update_bits(nau8821->regmap, NAU8821_R77_FEPGA,
637 NAU8821_ACDC_CTRL_MASK | NAU8821_FEPGA_MODEL_MASK, 0);
638 regmap_update_bits(nau8821->regmap, NAU8821_R76_BOOST,
639 NAU8821_HP_BOOST_DISCHRG_EN, 0);
640 break;
641 default:
642 break;
643 }
644
645 return 0;
646}
647
648static const struct snd_soc_dapm_widget nau8821_dapm_widgets[] = {
649 SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0,
650 system_clock_control, SND_SOC_DAPM_POST_PMD),
651 SND_SOC_DAPM_SUPPLY("MICBIAS", NAU8821_R74_MIC_BIAS,
652 NAU8821_MICBIAS_POWERUP_SFT, 0, NULL, 0),
653 SND_SOC_DAPM_SUPPLY("DMIC Clock", SND_SOC_NOPM, 0, 0,
654 dmic_clock_control, SND_SOC_DAPM_POST_PMU),
655 SND_SOC_DAPM_ADC("ADCL Power", NULL, NAU8821_R72_ANALOG_ADC_2,
656 NAU8821_POWERUP_ADCL_SFT, 0),
657 SND_SOC_DAPM_ADC("ADCR Power", NULL, NAU8821_R72_ANALOG_ADC_2,
658 NAU8821_POWERUP_ADCR_SFT, 0),
659 /* single-ended design only on the left */
660 SND_SOC_DAPM_PGA_S("Frontend PGA L", 1, NAU8821_R7F_POWER_UP_CONTROL,
661 NAU8821_PUP_PGA_L_SFT, 0, nau8821_left_fepga_event,
662 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
663 SND_SOC_DAPM_PGA_S("Frontend PGA R", 1, NAU8821_R7F_POWER_UP_CONTROL,
664 NAU8821_PUP_PGA_R_SFT, 0, NULL, 0),
665 SND_SOC_DAPM_PGA_S("ADCL Digital path", 0, NAU8821_R01_ENA_CTRL,
666 NAU8821_EN_ADCL_SFT, 0, nau8821_left_adc_event,
667 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
668 SND_SOC_DAPM_PGA_S("ADCR Digital path", 0, NAU8821_R01_ENA_CTRL,
669 NAU8821_EN_ADCR_SFT, 0, nau8821_right_adc_event,
670 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
671 SND_SOC_DAPM_SWITCH("DMIC Enable", SND_SOC_NOPM,
672 0, 0, &nau8821_dmic_mode_switch),
673 SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8821_R1D_I2S_PCM_CTRL2,
674 NAU8821_I2S_TRISTATE_SFT, 1),
675 SND_SOC_DAPM_AIF_IN("AIFRX", "Playback", 0, SND_SOC_NOPM, 0, 0),
676
677 SND_SOC_DAPM_PGA_S("ADACL", 2, NAU8821_R73_RDAC,
678 NAU8821_DACL_EN_SFT, 0, NULL, 0),
679 SND_SOC_DAPM_PGA_S("ADACR", 2, NAU8821_R73_RDAC,
680 NAU8821_DACR_EN_SFT, 0, NULL, 0),
681 SND_SOC_DAPM_PGA_S("ADACL Clock", 3, NAU8821_R73_RDAC,
682 NAU8821_DACL_CLK_EN_SFT, 0, NULL, 0),
683 SND_SOC_DAPM_PGA_S("ADACR Clock", 3, NAU8821_R73_RDAC,
684 NAU8821_DACR_CLK_EN_SFT, 0, NULL, 0),
685 SND_SOC_DAPM_DAC("DDACR", NULL, NAU8821_R01_ENA_CTRL,
686 NAU8821_EN_DACR_SFT, 0),
687 SND_SOC_DAPM_DAC("DDACL", NULL, NAU8821_R01_ENA_CTRL,
688 NAU8821_EN_DACL_SFT, 0),
689 SND_SOC_DAPM_PGA_S("HP amp L", 0, NAU8821_R4B_CLASSG_CTRL,
690 NAU8821_CLASSG_LDAC_EN_SFT, 0, NULL, 0),
691 SND_SOC_DAPM_PGA_S("HP amp R", 0, NAU8821_R4B_CLASSG_CTRL,
692 NAU8821_CLASSG_RDAC_EN_SFT, 0, NULL, 0),
693 SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8821_R80_CHARGE_PUMP,
694 NAU8821_CHANRGE_PUMP_EN_SFT, 0, nau8821_pump_event,
695 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
696 SND_SOC_DAPM_PGA_S("Output Driver R Stage 1", 4,
697 NAU8821_R7F_POWER_UP_CONTROL,
698 NAU8821_PUP_INTEG_R_SFT, 0, NULL, 0),
699 SND_SOC_DAPM_PGA_S("Output Driver L Stage 1", 4,
700 NAU8821_R7F_POWER_UP_CONTROL,
701 NAU8821_PUP_INTEG_L_SFT, 0, NULL, 0),
702 SND_SOC_DAPM_PGA_S("Output Driver R Stage 2", 5,
703 NAU8821_R7F_POWER_UP_CONTROL,
704 NAU8821_PUP_DRV_INSTG_R_SFT, 0, NULL, 0),
705 SND_SOC_DAPM_PGA_S("Output Driver L Stage 2", 5,
706 NAU8821_R7F_POWER_UP_CONTROL,
707 NAU8821_PUP_DRV_INSTG_L_SFT, 0, NULL, 0),
708 SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 6,
709 NAU8821_R7F_POWER_UP_CONTROL,
710 NAU8821_PUP_MAIN_DRV_R_SFT, 0, NULL, 0),
711 SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 6,
712 NAU8821_R7F_POWER_UP_CONTROL,
713 NAU8821_PUP_MAIN_DRV_L_SFT, 0, NULL, 0),
714 SND_SOC_DAPM_PGA_S("Output DACL", 7,
715 NAU8821_R80_CHARGE_PUMP, NAU8821_POWER_DOWN_DACL_SFT,
716 0, nau8821_output_dac_event,
717 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
718 SND_SOC_DAPM_PGA_S("Output DACR", 7,
719 NAU8821_R80_CHARGE_PUMP, NAU8821_POWER_DOWN_DACR_SFT,
720 0, nau8821_output_dac_event,
721 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
722
723 /* HPOL/R are ungrounded by disabling 16 Ohm pull-downs on playback */
724 SND_SOC_DAPM_PGA_S("HPOL Pulldown", 8,
725 NAU8821_R0D_JACK_DET_CTRL,
726 NAU8821_SPKR_DWN1L_SFT, 0, NULL, 0),
727 SND_SOC_DAPM_PGA_S("HPOR Pulldown", 8,
728 NAU8821_R0D_JACK_DET_CTRL,
729 NAU8821_SPKR_DWN1R_SFT, 0, NULL, 0),
730
731 /* High current HPOL/R boost driver */
732 SND_SOC_DAPM_PGA_S("HP Boost Driver", 9,
733 NAU8821_R76_BOOST, NAU8821_HP_BOOST_DIS_SFT, 1, NULL, 0),
734 SND_SOC_DAPM_PGA("Class G", NAU8821_R4B_CLASSG_CTRL,
735 NAU8821_CLASSG_EN_SFT, 0, NULL, 0),
736
737 SND_SOC_DAPM_INPUT("MICL"),
738 SND_SOC_DAPM_INPUT("MICR"),
739 SND_SOC_DAPM_INPUT("DMIC"),
740 SND_SOC_DAPM_OUTPUT("HPOL"),
741 SND_SOC_DAPM_OUTPUT("HPOR"),
742};
743
744static const struct snd_soc_dapm_route nau8821_dapm_routes[] = {
745 {"DMIC Enable", "Switch", "DMIC"},
746 {"DMIC Enable", NULL, "DMIC Clock"},
747
748 {"Frontend PGA L", NULL, "MICL"},
749 {"Frontend PGA R", NULL, "MICR"},
750 {"Frontend PGA L", NULL, "MICBIAS"},
751 {"Frontend PGA R", NULL, "MICBIAS"},
752
753 {"ADCL Power", NULL, "Frontend PGA L"},
754 {"ADCR Power", NULL, "Frontend PGA R"},
755
756 {"ADCL Digital path", NULL, "ADCL Power"},
757 {"ADCR Digital path", NULL, "ADCR Power"},
758 {"ADCL Digital path", NULL, "DMIC Enable"},
759 {"ADCR Digital path", NULL, "DMIC Enable"},
760
761 {"AIFTX", NULL, "ADCL Digital path"},
762 {"AIFTX", NULL, "ADCR Digital path"},
763
764 {"AIFTX", NULL, "System Clock"},
765 {"AIFRX", NULL, "System Clock"},
766
767 {"DDACL", NULL, "AIFRX"},
768 {"DDACR", NULL, "AIFRX"},
769
770 {"HP amp L", NULL, "DDACL"},
771 {"HP amp R", NULL, "DDACR"},
772
773 {"Charge Pump", NULL, "HP amp L"},
774 {"Charge Pump", NULL, "HP amp R"},
775
776 {"ADACL", NULL, "Charge Pump"},
777 {"ADACR", NULL, "Charge Pump"},
778 {"ADACL Clock", NULL, "ADACL"},
779 {"ADACR Clock", NULL, "ADACR"},
780
781 {"Output Driver L Stage 1", NULL, "ADACL Clock"},
782 {"Output Driver R Stage 1", NULL, "ADACR Clock"},
783 {"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"},
784 {"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"},
785 {"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"},
786 {"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"},
787 {"Output DACL", NULL, "Output Driver L Stage 3"},
788 {"Output DACR", NULL, "Output Driver R Stage 3"},
789
790 {"HPOL Pulldown", NULL, "Output DACL"},
791 {"HPOR Pulldown", NULL, "Output DACR"},
792 {"HP Boost Driver", NULL, "HPOL Pulldown"},
793 {"HP Boost Driver", NULL, "HPOR Pulldown"},
794
795 {"Class G", NULL, "HP Boost Driver"},
796 {"HPOL", NULL, "Class G"},
797 {"HPOR", NULL, "Class G"},
798};
799
800static const struct nau8821_osr_attr *
801nau8821_get_osr(struct nau8821 *nau8821, int stream)
802{
803 unsigned int osr;
804
805 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
806 regmap_read(nau8821->regmap, NAU8821_R2C_DAC_CTRL1, &osr);
807 osr &= NAU8821_DAC_OVERSAMPLE_MASK;
808 if (osr >= ARRAY_SIZE(osr_dac_sel))
809 return NULL;
810 return &osr_dac_sel[osr];
811 } else {
812 regmap_read(nau8821->regmap, NAU8821_R2B_ADC_RATE, &osr);
813 osr &= NAU8821_ADC_SYNC_DOWN_MASK;
814 if (osr >= ARRAY_SIZE(osr_adc_sel))
815 return NULL;
816 return &osr_adc_sel[osr];
817 }
818}
819
820static int nau8821_dai_startup(struct snd_pcm_substream *substream,
821 struct snd_soc_dai *dai)
822{
823 struct snd_soc_component *component = dai->component;
824 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
825 const struct nau8821_osr_attr *osr;
826
827 osr = nau8821_get_osr(nau8821, substream->stream);
828 if (!osr || !osr->osr)
829 return -EINVAL;
830
831 return snd_pcm_hw_constraint_minmax(substream->runtime,
832 SNDRV_PCM_HW_PARAM_RATE,
833 0, CLK_DA_AD_MAX / osr->osr);
834}
835
836static int nau8821_hw_params(struct snd_pcm_substream *substream,
837 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
838{
839 struct snd_soc_component *component = dai->component;
840 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
841 unsigned int val_len = 0, ctrl_val, bclk_fs, clk_div;
842 const struct nau8821_osr_attr *osr;
843
844 nau8821->fs = params_rate(params);
845 /* CLK_DAC or CLK_ADC = OSR * FS
846 * DAC or ADC clock frequency is defined as Over Sampling Rate (OSR)
847 * multiplied by the audio sample rate (Fs). Note that the OSR and Fs
848 * values must be selected such that the maximum frequency is less
849 * than 6.144 MHz.
850 */
851 osr = nau8821_get_osr(nau8821, substream->stream);
852 if (!osr || !osr->osr)
853 return -EINVAL;
854 if (nau8821->fs * osr->osr > CLK_DA_AD_MAX)
855 return -EINVAL;
856 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
857 regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
858 NAU8821_CLK_DAC_SRC_MASK,
859 osr->clk_src << NAU8821_CLK_DAC_SRC_SFT);
860 else
861 regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
862 NAU8821_CLK_ADC_SRC_MASK,
863 osr->clk_src << NAU8821_CLK_ADC_SRC_SFT);
864
865 /* make BCLK and LRC divde configuration if the codec as master. */
866 regmap_read(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2, &ctrl_val);
867 if (ctrl_val & NAU8821_I2S_MS_MASTER) {
868 /* get the bclk and fs ratio */
869 bclk_fs = snd_soc_params_to_bclk(params) / nau8821->fs;
870 if (bclk_fs <= 32)
871 clk_div = 3;
872 else if (bclk_fs <= 64)
873 clk_div = 2;
874 else if (bclk_fs <= 128)
875 clk_div = 1;
876 else {
877 return -EINVAL;
878 }
879 regmap_update_bits(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2,
880 NAU8821_I2S_LRC_DIV_MASK | NAU8821_I2S_BLK_DIV_MASK,
881 (clk_div << NAU8821_I2S_LRC_DIV_SFT) | clk_div);
882 }
883
884 switch (params_width(params)) {
885 case 16:
886 val_len |= NAU8821_I2S_DL_16;
887 break;
888 case 20:
889 val_len |= NAU8821_I2S_DL_20;
890 break;
891 case 24:
892 val_len |= NAU8821_I2S_DL_24;
893 break;
894 case 32:
895 val_len |= NAU8821_I2S_DL_32;
896 break;
897 default:
898 return -EINVAL;
899 }
900
901 regmap_update_bits(nau8821->regmap, NAU8821_R1C_I2S_PCM_CTRL1,
902 NAU8821_I2S_DL_MASK, val_len);
903
904 return 0;
905}
906
907static int nau8821_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
908{
909 struct snd_soc_component *component = codec_dai->component;
910 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
911 unsigned int ctrl1_val = 0, ctrl2_val = 0;
912
913 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
914 case SND_SOC_DAIFMT_CBP_CFP:
915 ctrl2_val |= NAU8821_I2S_MS_MASTER;
916 break;
917 case SND_SOC_DAIFMT_CBC_CFC:
918 break;
919 default:
920 return -EINVAL;
921 }
922
923 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
924 case SND_SOC_DAIFMT_NB_NF:
925 break;
926 case SND_SOC_DAIFMT_IB_NF:
927 ctrl1_val |= NAU8821_I2S_BP_INV;
928 break;
929 default:
930 return -EINVAL;
931 }
932
933 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
934 case SND_SOC_DAIFMT_I2S:
935 ctrl1_val |= NAU8821_I2S_DF_I2S;
936 break;
937 case SND_SOC_DAIFMT_LEFT_J:
938 ctrl1_val |= NAU8821_I2S_DF_LEFT;
939 break;
940 case SND_SOC_DAIFMT_RIGHT_J:
941 ctrl1_val |= NAU8821_I2S_DF_RIGTH;
942 break;
943 case SND_SOC_DAIFMT_DSP_A:
944 ctrl1_val |= NAU8821_I2S_DF_PCM_AB;
945 break;
946 case SND_SOC_DAIFMT_DSP_B:
947 ctrl1_val |= NAU8821_I2S_DF_PCM_AB;
948 ctrl1_val |= NAU8821_I2S_PCMB_EN;
949 break;
950 default:
951 return -EINVAL;
952 }
953
954 regmap_update_bits(nau8821->regmap, NAU8821_R1C_I2S_PCM_CTRL1,
955 NAU8821_I2S_DL_MASK | NAU8821_I2S_DF_MASK |
956 NAU8821_I2S_BP_MASK | NAU8821_I2S_PCMB_MASK, ctrl1_val);
957 regmap_update_bits(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2,
958 NAU8821_I2S_MS_MASK, ctrl2_val);
959
960 return 0;
961}
962
963static int nau8821_digital_mute(struct snd_soc_dai *dai, int mute,
964 int direction)
965{
966 struct snd_soc_component *component = dai->component;
967 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
968 unsigned int val = 0;
969
970 if (mute)
971 val = NAU8821_DAC_SOFT_MUTE;
972
973 return regmap_update_bits(nau8821->regmap,
974 NAU8821_R31_MUTE_CTRL, NAU8821_DAC_SOFT_MUTE, val);
975}
976
977static const struct snd_soc_dai_ops nau8821_dai_ops = {
978 .startup = nau8821_dai_startup,
979 .hw_params = nau8821_hw_params,
980 .set_fmt = nau8821_set_dai_fmt,
981 .mute_stream = nau8821_digital_mute,
982 .no_capture_mute = 1,
983};
984
985#define NAU8821_RATES SNDRV_PCM_RATE_8000_192000
986#define NAU8821_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
987 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
988
989static struct snd_soc_dai_driver nau8821_dai = {
990 .name = NUVOTON_CODEC_DAI,
991 .playback = {
992 .stream_name = "Playback",
993 .channels_min = 1,
994 .channels_max = 2,
995 .rates = NAU8821_RATES,
996 .formats = NAU8821_FORMATS,
997 },
998 .capture = {
999 .stream_name = "Capture",
1000 .channels_min = 1,
1001 .channels_max = 2,
1002 .rates = NAU8821_RATES,
1003 .formats = NAU8821_FORMATS,
1004 },
1005 .ops = &nau8821_dai_ops,
1006};
1007
1008
1009static bool nau8821_is_jack_inserted(struct regmap *regmap)
1010{
1011 bool active_high, is_high;
1012 int status, jkdet;
1013
1014 regmap_read(regmap, NAU8821_R0D_JACK_DET_CTRL, &jkdet);
1015 active_high = jkdet & NAU8821_JACK_POLARITY;
1016 regmap_read(regmap, NAU8821_R82_GENERAL_STATUS, &status);
1017 is_high = status & NAU8821_GPIO2_IN;
1018 /* return jack connection status according to jack insertion logic
1019 * active high or active low.
1020 */
1021 return active_high == is_high;
1022}
1023
1024static void nau8821_int_status_clear_all(struct regmap *regmap)
1025{
1026 int active_irq, clear_irq, i;
1027
1028 /* Reset the intrruption status from rightmost bit if the corres-
1029 * ponding irq event occurs.
1030 */
1031 regmap_read(regmap, NAU8821_R10_IRQ_STATUS, &active_irq);
1032 for (i = 0; i < NAU8821_REG_DATA_LEN; i++) {
1033 clear_irq = (0x1 << i);
1034 if (active_irq & clear_irq)
1035 regmap_write(regmap,
1036 NAU8821_R11_INT_CLR_KEY_STATUS, clear_irq);
1037 }
1038}
1039
1040static void nau8821_eject_jack(struct nau8821 *nau8821)
1041{
1042 struct snd_soc_dapm_context *dapm = nau8821->dapm;
1043 struct regmap *regmap = nau8821->regmap;
1044 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
1045
1046 /* Detach 2kOhm Resistors from MICBIAS to MICGND */
1047 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
1048 NAU8821_MICBIAS_JKR2, 0);
1049 /* HPL/HPR short to ground */
1050 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1051 NAU8821_SPKR_DWN1R | NAU8821_SPKR_DWN1L, 0);
1052 snd_soc_component_disable_pin(component, "MICBIAS");
1053 snd_soc_dapm_sync(dapm);
1054
1055 /* Clear all interruption status */
1056 nau8821_int_status_clear_all(regmap);
1057
1058 /* Enable the insertion interruption, disable the ejection inter-
1059 * ruption, and then bypass de-bounce circuit.
1060 */
1061 regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL,
1062 NAU8821_IRQ_EJECT_DIS | NAU8821_IRQ_INSERT_DIS,
1063 NAU8821_IRQ_EJECT_DIS);
1064 /* Mask unneeded IRQs: 1 - disable, 0 - enable */
1065 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
1066 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN,
1067 NAU8821_IRQ_EJECT_EN);
1068
1069 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1070 NAU8821_JACK_DET_DB_BYPASS, NAU8821_JACK_DET_DB_BYPASS);
1071
1072 /* Close clock for jack type detection at manual mode */
1073 if (dapm->bias_level < SND_SOC_BIAS_PREPARE)
1074 nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0);
1075
1076 /* Recover to normal channel input */
1077 regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE,
1078 NAU8821_ADC_R_SRC_EN, 0);
1079 if (nau8821->key_enable) {
1080 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
1081 NAU8821_IRQ_KEY_RELEASE_EN |
1082 NAU8821_IRQ_KEY_PRESS_EN,
1083 NAU8821_IRQ_KEY_RELEASE_EN |
1084 NAU8821_IRQ_KEY_PRESS_EN);
1085 regmap_update_bits(regmap,
1086 NAU8821_R12_INTERRUPT_DIS_CTRL,
1087 NAU8821_IRQ_KEY_RELEASE_DIS |
1088 NAU8821_IRQ_KEY_PRESS_DIS,
1089 NAU8821_IRQ_KEY_RELEASE_DIS |
1090 NAU8821_IRQ_KEY_PRESS_DIS);
1091 }
1092
1093}
1094
1095static void nau8821_jdet_work(struct work_struct *work)
1096{
1097 struct nau8821 *nau8821 =
1098 container_of(work, struct nau8821, jdet_work);
1099 struct snd_soc_dapm_context *dapm = nau8821->dapm;
1100 struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
1101 struct regmap *regmap = nau8821->regmap;
1102 int jack_status_reg, mic_detected, event = 0, event_mask = 0;
1103
1104 snd_soc_component_force_enable_pin(component, "MICBIAS");
1105 snd_soc_dapm_sync(dapm);
1106 msleep(20);
1107
1108 regmap_read(regmap, NAU8821_R58_I2C_DEVICE_ID, &jack_status_reg);
1109 mic_detected = !(jack_status_reg & NAU8821_KEYDET);
1110 if (mic_detected) {
1111 dev_dbg(nau8821->dev, "Headset connected\n");
1112 event |= SND_JACK_HEADSET;
1113
1114 /* 2kOhm Resistor from MICBIAS to MICGND1 */
1115 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
1116 NAU8821_MICBIAS_JKR2, NAU8821_MICBIAS_JKR2);
1117 /* Latch Right Channel Analog data
1118 * input into the Right Channel Filter
1119 */
1120 regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE,
1121 NAU8821_ADC_R_SRC_EN, NAU8821_ADC_R_SRC_EN);
1122 if (nau8821->key_enable) {
1123 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
1124 NAU8821_IRQ_KEY_RELEASE_EN |
1125 NAU8821_IRQ_KEY_PRESS_EN, 0);
1126 regmap_update_bits(regmap,
1127 NAU8821_R12_INTERRUPT_DIS_CTRL,
1128 NAU8821_IRQ_KEY_RELEASE_DIS |
1129 NAU8821_IRQ_KEY_PRESS_DIS, 0);
1130 } else {
1131 snd_soc_component_disable_pin(component, "MICBIAS");
1132 snd_soc_dapm_sync(nau8821->dapm);
1133 }
1134 } else {
1135 dev_dbg(nau8821->dev, "Headphone connected\n");
1136 event |= SND_JACK_HEADPHONE;
1137 snd_soc_component_disable_pin(component, "MICBIAS");
1138 snd_soc_dapm_sync(dapm);
1139 }
1140 event_mask |= SND_JACK_HEADSET;
1141 snd_soc_jack_report(nau8821->jack, event, event_mask);
1142}
1143
1144/* Enable interruptions with internal clock. */
1145static void nau8821_setup_inserted_irq(struct nau8821 *nau8821)
1146{
1147 struct regmap *regmap = nau8821->regmap;
1148
1149 /* Enable internal VCO needed for interruptions */
1150 if (nau8821->dapm->bias_level < SND_SOC_BIAS_PREPARE)
1151 nau8821_configure_sysclk(nau8821, NAU8821_CLK_INTERNAL, 0);
1152
1153 /* Chip needs one FSCLK cycle in order to generate interruptions,
1154 * as we cannot guarantee one will be provided by the system. Turning
1155 * master mode on then off enables us to generate that FSCLK cycle
1156 * with a minimum of contention on the clock bus.
1157 */
1158 regmap_update_bits(regmap, NAU8821_R1D_I2S_PCM_CTRL2,
1159 NAU8821_I2S_MS_MASK, NAU8821_I2S_MS_MASTER);
1160 regmap_update_bits(regmap, NAU8821_R1D_I2S_PCM_CTRL2,
1161 NAU8821_I2S_MS_MASK, NAU8821_I2S_MS_SLAVE);
1162
1163 /* Not bypass de-bounce circuit */
1164 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1165 NAU8821_JACK_DET_DB_BYPASS, 0);
1166
1167 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
1168 NAU8821_IRQ_EJECT_EN, 0);
1169 regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL,
1170 NAU8821_IRQ_EJECT_DIS, 0);
1171}
1172
1173static irqreturn_t nau8821_interrupt(int irq, void *data)
1174{
1175 struct nau8821 *nau8821 = (struct nau8821 *)data;
1176 struct regmap *regmap = nau8821->regmap;
1177 int active_irq, clear_irq = 0, event = 0, event_mask = 0;
1178
1179 if (regmap_read(regmap, NAU8821_R10_IRQ_STATUS, &active_irq)) {
1180 dev_err(nau8821->dev, "failed to read irq status\n");
1181 return IRQ_NONE;
1182 }
1183
1184 dev_dbg(nau8821->dev, "IRQ %d\n", active_irq);
1185
1186 if ((active_irq & NAU8821_JACK_EJECT_IRQ_MASK) ==
1187 NAU8821_JACK_EJECT_DETECTED) {
1188 regmap_update_bits(regmap, NAU8821_R71_ANALOG_ADC_1,
1189 NAU8821_MICDET_MASK, NAU8821_MICDET_DIS);
1190 nau8821_eject_jack(nau8821);
1191 event_mask |= SND_JACK_HEADSET;
1192 clear_irq = NAU8821_JACK_EJECT_IRQ_MASK;
1193 } else if (active_irq & NAU8821_KEY_SHORT_PRESS_IRQ) {
1194 event |= NAU8821_BUTTON;
1195 event_mask |= NAU8821_BUTTON;
1196 clear_irq = NAU8821_KEY_SHORT_PRESS_IRQ;
1197 } else if (active_irq & NAU8821_KEY_RELEASE_IRQ) {
1198 event_mask = NAU8821_BUTTON;
1199 clear_irq = NAU8821_KEY_RELEASE_IRQ;
1200 } else if ((active_irq & NAU8821_JACK_INSERT_IRQ_MASK) ==
1201 NAU8821_JACK_INSERT_DETECTED) {
1202 regmap_update_bits(regmap, NAU8821_R71_ANALOG_ADC_1,
1203 NAU8821_MICDET_MASK, NAU8821_MICDET_EN);
1204 if (nau8821_is_jack_inserted(regmap)) {
1205 /* detect microphone and jack type */
1206 cancel_work_sync(&nau8821->jdet_work);
1207 schedule_work(&nau8821->jdet_work);
1208 /* Turn off insertion interruption at manual mode */
1209 regmap_update_bits(regmap,
1210 NAU8821_R12_INTERRUPT_DIS_CTRL,
1211 NAU8821_IRQ_INSERT_DIS,
1212 NAU8821_IRQ_INSERT_DIS);
1213 regmap_update_bits(regmap,
1214 NAU8821_R0F_INTERRUPT_MASK,
1215 NAU8821_IRQ_INSERT_EN,
1216 NAU8821_IRQ_INSERT_EN);
1217 nau8821_setup_inserted_irq(nau8821);
1218 } else {
1219 dev_warn(nau8821->dev,
1220 "Inserted IRQ fired but not connected\n");
1221 nau8821_eject_jack(nau8821);
1222 }
1223 }
1224
1225 if (!clear_irq)
1226 clear_irq = active_irq;
1227 /* clears the rightmost interruption */
1228 regmap_write(regmap, NAU8821_R11_INT_CLR_KEY_STATUS, clear_irq);
1229
1230 if (event_mask)
1231 snd_soc_jack_report(nau8821->jack, event, event_mask);
1232
1233 return IRQ_HANDLED;
1234}
1235
1236static const struct regmap_config nau8821_regmap_config = {
1237 .val_bits = NAU8821_REG_DATA_LEN,
1238 .reg_bits = NAU8821_REG_ADDR_LEN,
1239
1240 .max_register = NAU8821_REG_MAX,
1241 .readable_reg = nau8821_readable_reg,
1242 .writeable_reg = nau8821_writeable_reg,
1243 .volatile_reg = nau8821_volatile_reg,
1244
1245 .cache_type = REGCACHE_RBTREE,
1246 .reg_defaults = nau8821_reg_defaults,
1247 .num_reg_defaults = ARRAY_SIZE(nau8821_reg_defaults),
1248};
1249
1250static int nau8821_component_probe(struct snd_soc_component *component)
1251{
1252 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
1253 struct snd_soc_dapm_context *dapm =
1254 snd_soc_component_get_dapm(component);
1255
1256 nau8821->dapm = dapm;
1257
1258 return 0;
1259}
1260
1261/**
1262 * nau8821_calc_fll_param - Calculate FLL parameters.
1263 * @fll_in: external clock provided to codec.
1264 * @fs: sampling rate.
1265 * @fll_param: Pointer to structure of FLL parameters.
1266 *
1267 * Calculate FLL parameters to configure codec.
1268 *
1269 * Returns 0 for success or negative error code.
1270 */
1271static int nau8821_calc_fll_param(unsigned int fll_in,
1272 unsigned int fs, struct nau8821_fll *fll_param)
1273{
1274 u64 fvco, fvco_max;
1275 unsigned int fref, i, fvco_sel;
1276
1277 /* Ensure the reference clock frequency (FREF) is <= 13.5MHz by
1278 * dividing freq_in by 1, 2, 4, or 8 using FLL pre-scalar.
1279 * FREF = freq_in / NAU8821_FLL_REF_DIV_MASK
1280 */
1281 for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) {
1282 fref = fll_in >> fll_pre_scalar[i].param;
1283 if (fref <= NAU_FREF_MAX)
1284 break;
1285 }
1286 if (i == ARRAY_SIZE(fll_pre_scalar))
1287 return -EINVAL;
1288 fll_param->clk_ref_div = fll_pre_scalar[i].val;
1289
1290 /* Choose the FLL ratio based on FREF */
1291 for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) {
1292 if (fref >= fll_ratio[i].param)
1293 break;
1294 }
1295 if (i == ARRAY_SIZE(fll_ratio))
1296 return -EINVAL;
1297 fll_param->ratio = fll_ratio[i].val;
1298
1299 /* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs.
1300 * FDCO must be within the 90MHz - 100MHz or the FFL cannot be
1301 * guaranteed across the full range of operation.
1302 * FDCO = freq_out * 2 * mclk_src_scaling
1303 */
1304 fvco_max = 0;
1305 fvco_sel = ARRAY_SIZE(mclk_src_scaling);
1306 for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
1307 fvco = 256ULL * fs * 2 * mclk_src_scaling[i].param;
1308 if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX &&
1309 fvco_max < fvco) {
1310 fvco_max = fvco;
1311 fvco_sel = i;
1312 }
1313 }
1314 if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel)
1315 return -EINVAL;
1316 fll_param->mclk_src = mclk_src_scaling[fvco_sel].val;
1317
1318 /* Calculate the FLL 10-bit integer input and the FLL 24-bit fractional
1319 * input based on FDCO, FREF and FLL ratio.
1320 */
1321 fvco = div_u64(fvco_max << 24, fref * fll_param->ratio);
1322 fll_param->fll_int = (fvco >> 24) & 0x3ff;
1323 fll_param->fll_frac = fvco & 0xffffff;
1324
1325 return 0;
1326}
1327
1328static void nau8821_fll_apply(struct nau8821 *nau8821,
1329 struct nau8821_fll *fll_param)
1330{
1331 struct regmap *regmap = nau8821->regmap;
1332
1333 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
1334 NAU8821_CLK_SRC_MASK | NAU8821_CLK_MCLK_SRC_MASK,
1335 NAU8821_CLK_SRC_MCLK | fll_param->mclk_src);
1336 /* Make DSP operate at high speed for better performance. */
1337 regmap_update_bits(regmap, NAU8821_R04_FLL1,
1338 NAU8821_FLL_RATIO_MASK | NAU8821_ICTRL_LATCH_MASK,
1339 fll_param->ratio | (0x6 << NAU8821_ICTRL_LATCH_SFT));
1340 /* FLL 24-bit fractional input */
1341 regmap_write(regmap, NAU8821_R0A_FLL7,
1342 (fll_param->fll_frac >> 16) & 0xff);
1343 regmap_write(regmap, NAU8821_R0B_FLL8, fll_param->fll_frac & 0xffff);
1344 /* FLL 10-bit integer input */
1345 regmap_update_bits(regmap, NAU8821_R06_FLL3,
1346 NAU8821_FLL_INTEGER_MASK, fll_param->fll_int);
1347 /* FLL pre-scaler */
1348 regmap_update_bits(regmap, NAU8821_R07_FLL4,
1349 NAU8821_HIGHBW_EN | NAU8821_FLL_REF_DIV_MASK,
1350 NAU8821_HIGHBW_EN |
1351 (fll_param->clk_ref_div << NAU8821_FLL_REF_DIV_SFT));
1352 /* select divided VCO input */
1353 regmap_update_bits(regmap, NAU8821_R08_FLL5,
1354 NAU8821_FLL_CLK_SW_MASK, NAU8821_FLL_CLK_SW_REF);
1355 /* Disable free-running mode */
1356 regmap_update_bits(regmap,
1357 NAU8821_R09_FLL6, NAU8821_DCO_EN, 0);
1358 if (fll_param->fll_frac) {
1359 /* set FLL loop filter enable and cutoff frequency at 500Khz */
1360 regmap_update_bits(regmap, NAU8821_R08_FLL5,
1361 NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN |
1362 NAU8821_FLL_FTR_SW_MASK,
1363 NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN |
1364 NAU8821_FLL_FTR_SW_FILTER);
1365 regmap_update_bits(regmap, NAU8821_R09_FLL6,
1366 NAU8821_SDM_EN | NAU8821_CUTOFF500,
1367 NAU8821_SDM_EN | NAU8821_CUTOFF500);
1368 } else {
1369 /* disable FLL loop filter and cutoff frequency */
1370 regmap_update_bits(regmap, NAU8821_R08_FLL5,
1371 NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN |
1372 NAU8821_FLL_FTR_SW_MASK, NAU8821_FLL_FTR_SW_ACCU);
1373 regmap_update_bits(regmap, NAU8821_R09_FLL6,
1374 NAU8821_SDM_EN | NAU8821_CUTOFF500, 0);
1375 }
1376}
1377
1378/**
1379 * nau8821_set_fll - FLL configuration of nau8821
1380 * @component: codec component
1381 * @pll_id: PLL requested
1382 * @source: clock source
1383 * @freq_in: frequency of input clock source
1384 * @freq_out: must be 256*Fs in order to achieve the best performance
1385 *
1386 * The FLL function can select BCLK or MCLK as the input clock source.
1387 *
1388 * Returns 0 if the parameters have been applied successfully
1389 * or negative error code.
1390 */
1391static int nau8821_set_fll(struct snd_soc_component *component,
1392 int pll_id, int source, unsigned int freq_in, unsigned int freq_out)
1393{
1394 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
1395 struct nau8821_fll fll_set_param, *fll_param = &fll_set_param;
1396 int ret, fs;
1397
1398 fs = freq_out >> 8;
1399 ret = nau8821_calc_fll_param(freq_in, fs, fll_param);
1400 if (ret) {
1401 dev_err(nau8821->dev,
1402 "Unsupported input clock %d to output clock %d\n",
1403 freq_in, freq_out);
1404 return ret;
1405 }
1406 dev_dbg(nau8821->dev,
1407 "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n",
1408 fll_param->mclk_src, fll_param->ratio, fll_param->fll_frac,
1409 fll_param->fll_int, fll_param->clk_ref_div);
1410
1411 nau8821_fll_apply(nau8821, fll_param);
1412 mdelay(2);
1413 regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
1414 NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_VCO);
1415
1416 return 0;
1417}
1418
1419static void nau8821_configure_mclk_as_sysclk(struct regmap *regmap)
1420{
1421 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
1422 NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_MCLK);
1423 regmap_update_bits(regmap, NAU8821_R09_FLL6,
1424 NAU8821_DCO_EN, 0);
1425 /* Make DSP operate as default setting for power saving. */
1426 regmap_update_bits(regmap, NAU8821_R04_FLL1,
1427 NAU8821_ICTRL_LATCH_MASK, 0);
1428}
1429
1430static int nau8821_configure_sysclk(struct nau8821 *nau8821,
1431 int clk_id, unsigned int freq)
1432{
1433 struct regmap *regmap = nau8821->regmap;
1434
1435 switch (clk_id) {
1436 case NAU8821_CLK_DIS:
1437 /* Clock provided externally and disable internal VCO clock */
1438 nau8821_configure_mclk_as_sysclk(regmap);
1439 break;
1440 case NAU8821_CLK_MCLK:
1441 nau8821_configure_mclk_as_sysclk(regmap);
1442 /* MCLK not changed by clock tree */
1443 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
1444 NAU8821_CLK_MCLK_SRC_MASK, 0);
1445 break;
1446 case NAU8821_CLK_INTERNAL:
1447 if (nau8821_is_jack_inserted(regmap)) {
1448 regmap_update_bits(regmap, NAU8821_R09_FLL6,
1449 NAU8821_DCO_EN, NAU8821_DCO_EN);
1450 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
1451 NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_VCO);
1452 /* Decrease the VCO frequency and make DSP operate
1453 * as default setting for power saving.
1454 */
1455 regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
1456 NAU8821_CLK_MCLK_SRC_MASK, 0xf);
1457 regmap_update_bits(regmap, NAU8821_R04_FLL1,
1458 NAU8821_ICTRL_LATCH_MASK |
1459 NAU8821_FLL_RATIO_MASK, 0x10);
1460 regmap_update_bits(regmap, NAU8821_R09_FLL6,
1461 NAU8821_SDM_EN, NAU8821_SDM_EN);
1462 }
1463 break;
1464 case NAU8821_CLK_FLL_MCLK:
1465 /* Higher FLL reference input frequency can only set lower
1466 * gain error, such as 0000 for input reference from MCLK
1467 * 12.288Mhz.
1468 */
1469 regmap_update_bits(regmap, NAU8821_R06_FLL3,
1470 NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK,
1471 NAU8821_FLL_CLK_SRC_MCLK | 0);
1472 break;
1473 case NAU8821_CLK_FLL_BLK:
1474 /* If FLL reference input is from low frequency source,
1475 * higher error gain can apply such as 0xf which has
1476 * the most sensitive gain error correction threshold,
1477 * Therefore, FLL has the most accurate DCO to
1478 * target frequency.
1479 */
1480 regmap_update_bits(regmap, NAU8821_R06_FLL3,
1481 NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK,
1482 NAU8821_FLL_CLK_SRC_BLK |
1483 (0xf << NAU8821_GAIN_ERR_SFT));
1484 break;
1485 case NAU8821_CLK_FLL_FS:
1486 /* If FLL reference input is from low frequency source,
1487 * higher error gain can apply such as 0xf which has
1488 * the most sensitive gain error correction threshold,
1489 * Therefore, FLL has the most accurate DCO to
1490 * target frequency.
1491 */
1492 regmap_update_bits(regmap, NAU8821_R06_FLL3,
1493 NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK,
1494 NAU8821_FLL_CLK_SRC_FS |
1495 (0xf << NAU8821_GAIN_ERR_SFT));
1496 break;
1497 default:
1498 dev_err(nau8821->dev, "Invalid clock id (%d)\n", clk_id);
1499 return -EINVAL;
1500 }
1501 nau8821->clk_id = clk_id;
1502 dev_dbg(nau8821->dev, "Sysclk is %dHz and clock id is %d\n", freq,
1503 nau8821->clk_id);
1504
1505 return 0;
1506}
1507
1508static int nau8821_set_sysclk(struct snd_soc_component *component, int clk_id,
1509 int source, unsigned int freq, int dir)
1510{
1511 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
1512
1513 return nau8821_configure_sysclk(nau8821, clk_id, freq);
1514}
1515
1516static int nau8821_resume_setup(struct nau8821 *nau8821)
1517{
1518 struct regmap *regmap = nau8821->regmap;
1519
1520 /* Close clock when jack type detection at manual mode */
1521 nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0);
1522 if (nau8821->irq) {
1523 /* Clear all interruption status */
1524 nau8821_int_status_clear_all(regmap);
1525
1526 /* Enable both insertion and ejection interruptions, and then
1527 * bypass de-bounce circuit.
1528 */
1529 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
1530 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN, 0);
1531 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1532 NAU8821_JACK_DET_DB_BYPASS,
1533 NAU8821_JACK_DET_DB_BYPASS);
1534 regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL,
1535 NAU8821_IRQ_INSERT_DIS | NAU8821_IRQ_EJECT_DIS, 0);
1536 }
1537
1538 return 0;
1539}
1540
1541static int nau8821_set_bias_level(struct snd_soc_component *component,
1542 enum snd_soc_bias_level level)
1543{
1544 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
1545 struct regmap *regmap = nau8821->regmap;
1546
1547 switch (level) {
1548 case SND_SOC_BIAS_ON:
1549 break;
1550
1551 case SND_SOC_BIAS_PREPARE:
1552 break;
1553
1554 case SND_SOC_BIAS_STANDBY:
1555 /* Setup codec configuration after resume */
1556 if (snd_soc_component_get_bias_level(component) ==
1557 SND_SOC_BIAS_OFF)
1558 nau8821_resume_setup(nau8821);
1559 break;
1560
1561 case SND_SOC_BIAS_OFF:
1562 /* HPL/HPR short to ground */
1563 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1564 NAU8821_SPKR_DWN1R | NAU8821_SPKR_DWN1L, 0);
1565 if (nau8821->irq) {
1566 /* Reset the configuration of jack type for detection.
1567 * Detach 2kOhm Resistors from MICBIAS to MICGND1/2.
1568 */
1569 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
1570 NAU8821_MICBIAS_JKR2, 0);
1571 /* Turn off all interruptions before system shutdown.
1572 * Keep theinterruption quiet before resume
1573 * setup completes.
1574 */
1575 regmap_write(regmap,
1576 NAU8821_R12_INTERRUPT_DIS_CTRL, 0xffff);
1577 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
1578 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN,
1579 NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN);
1580 }
1581 break;
1582 default:
1583 break;
1584 }
1585
1586 return 0;
1587}
1588
1589static int __maybe_unused nau8821_suspend(struct snd_soc_component *component)
1590{
1591 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
1592
1593 if (nau8821->irq)
1594 disable_irq(nau8821->irq);
1595 snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
1596 /* Power down codec power; don't support button wakeup */
1597 snd_soc_component_disable_pin(component, "MICBIAS");
1598 snd_soc_dapm_sync(nau8821->dapm);
1599 regcache_cache_only(nau8821->regmap, true);
1600 regcache_mark_dirty(nau8821->regmap);
1601
1602 return 0;
1603}
1604
1605static int __maybe_unused nau8821_resume(struct snd_soc_component *component)
1606{
1607 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
1608
1609 regcache_cache_only(nau8821->regmap, false);
1610 regcache_sync(nau8821->regmap);
1611 if (nau8821->irq)
1612 enable_irq(nau8821->irq);
1613
1614 return 0;
1615}
1616
1617static const struct snd_soc_component_driver nau8821_component_driver = {
1618 .probe = nau8821_component_probe,
1619 .set_sysclk = nau8821_set_sysclk,
1620 .set_pll = nau8821_set_fll,
1621 .set_bias_level = nau8821_set_bias_level,
1622 .suspend = nau8821_suspend,
1623 .resume = nau8821_resume,
1624 .controls = nau8821_controls,
1625 .num_controls = ARRAY_SIZE(nau8821_controls),
1626 .dapm_widgets = nau8821_dapm_widgets,
1627 .num_dapm_widgets = ARRAY_SIZE(nau8821_dapm_widgets),
1628 .dapm_routes = nau8821_dapm_routes,
1629 .num_dapm_routes = ARRAY_SIZE(nau8821_dapm_routes),
1630 .suspend_bias_off = 1,
1631 .idle_bias_on = 1,
1632 .use_pmdown_time = 1,
1633 .endianness = 1,
1634};
1635
1636/**
1637 * nau8821_enable_jack_detect - Specify a jack for event reporting
1638 *
1639 * @component: component to register the jack with
1640 * @jack: jack to use to report headset and button events on
1641 *
1642 * After this function has been called the headset insert/remove and button
1643 * events will be routed to the given jack. Jack can be null to stop
1644 * reporting.
1645 */
1646int nau8821_enable_jack_detect(struct snd_soc_component *component,
1647 struct snd_soc_jack *jack)
1648{
1649 struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
1650 int ret;
1651
1652 nau8821->jack = jack;
1653 /* Initiate jack detection work queue */
1654 INIT_WORK(&nau8821->jdet_work, nau8821_jdet_work);
1655 ret = devm_request_threaded_irq(nau8821->dev, nau8821->irq, NULL,
1656 nau8821_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
1657 "nau8821", nau8821);
1658 if (ret) {
1659 dev_err(nau8821->dev, "Cannot request irq %d (%d)\n",
1660 nau8821->irq, ret);
1661 return ret;
1662 }
1663
1664 return ret;
1665}
1666EXPORT_SYMBOL_GPL(nau8821_enable_jack_detect);
1667
1668static void nau8821_reset_chip(struct regmap *regmap)
1669{
1670 regmap_write(regmap, NAU8821_R00_RESET, 0xffff);
1671 regmap_write(regmap, NAU8821_R00_RESET, 0xffff);
1672}
1673
1674static void nau8821_print_device_properties(struct nau8821 *nau8821)
1675{
1676 struct device *dev = nau8821->dev;
1677
1678 dev_dbg(dev, "jkdet-enable: %d\n", nau8821->jkdet_enable);
1679 dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8821->jkdet_pull_enable);
1680 dev_dbg(dev, "jkdet-pull-up: %d\n", nau8821->jkdet_pull_up);
1681 dev_dbg(dev, "jkdet-polarity: %d\n", nau8821->jkdet_polarity);
1682 dev_dbg(dev, "micbias-voltage: %d\n", nau8821->micbias_voltage);
1683 dev_dbg(dev, "vref-impedance: %d\n", nau8821->vref_impedance);
1684 dev_dbg(dev, "jack-insert-debounce: %d\n",
1685 nau8821->jack_insert_debounce);
1686 dev_dbg(dev, "jack-eject-debounce: %d\n",
1687 nau8821->jack_eject_debounce);
1688 dev_dbg(dev, "dmic-clk-threshold: %d\n",
1689 nau8821->dmic_clk_threshold);
1690 dev_dbg(dev, "key_enable: %d\n", nau8821->key_enable);
1691 dev_dbg(dev, "adc-delay-ms: %d\n", nau8821->adc_delay);
1692}
1693
1694static int nau8821_read_device_properties(struct device *dev,
1695 struct nau8821 *nau8821)
1696{
1697 int ret;
1698
1699 nau8821->jkdet_enable = device_property_read_bool(dev,
1700 "nuvoton,jkdet-enable");
1701 nau8821->jkdet_pull_enable = device_property_read_bool(dev,
1702 "nuvoton,jkdet-pull-enable");
1703 nau8821->jkdet_pull_up = device_property_read_bool(dev,
1704 "nuvoton,jkdet-pull-up");
1705 nau8821->key_enable = device_property_read_bool(dev,
1706 "nuvoton,key-enable");
1707 nau8821->left_input_single_end = device_property_read_bool(dev,
1708 "nuvoton,left-input-single-end");
1709 ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity",
1710 &nau8821->jkdet_polarity);
1711 if (ret)
1712 nau8821->jkdet_polarity = 1;
1713 ret = device_property_read_u32(dev, "nuvoton,micbias-voltage",
1714 &nau8821->micbias_voltage);
1715 if (ret)
1716 nau8821->micbias_voltage = 6;
1717 ret = device_property_read_u32(dev, "nuvoton,vref-impedance",
1718 &nau8821->vref_impedance);
1719 if (ret)
1720 nau8821->vref_impedance = 2;
1721 ret = device_property_read_u32(dev, "nuvoton,jack-insert-debounce",
1722 &nau8821->jack_insert_debounce);
1723 if (ret)
1724 nau8821->jack_insert_debounce = 7;
1725 ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce",
1726 &nau8821->jack_eject_debounce);
1727 if (ret)
1728 nau8821->jack_eject_debounce = 0;
1729 ret = device_property_read_u32(dev, "nuvoton,dmic-clk-threshold",
1730 &nau8821->dmic_clk_threshold);
1731 if (ret)
1732 nau8821->dmic_clk_threshold = 3072000;
1733 ret = device_property_read_u32(dev, "nuvoton,dmic-slew-rate",
1734 &nau8821->dmic_slew_rate);
1735 if (ret)
1736 nau8821->dmic_slew_rate = 0;
1737 ret = device_property_read_u32(dev, "nuvoton,adc-delay-ms",
1738 &nau8821->adc_delay);
1739 if (ret)
1740 nau8821->adc_delay = 125;
1741 if (nau8821->adc_delay < 125 || nau8821->adc_delay > 500)
1742 dev_warn(dev, "Please set the suitable delay time!\n");
1743
1744 return 0;
1745}
1746
1747static void nau8821_init_regs(struct nau8821 *nau8821)
1748{
1749 struct regmap *regmap = nau8821->regmap;
1750
1751 /* Enable Bias/Vmid */
1752 regmap_update_bits(regmap, NAU8821_R66_BIAS_ADJ,
1753 NAU8821_BIAS_VMID, NAU8821_BIAS_VMID);
1754 regmap_update_bits(regmap, NAU8821_R76_BOOST,
1755 NAU8821_GLOBAL_BIAS_EN, NAU8821_GLOBAL_BIAS_EN);
1756 /* VMID Tieoff setting and enable TESTDAC.
1757 * This sets the analog DAC inputs to a '0' input signal to avoid
1758 * any glitches due to power up transients in both the analog and
1759 * digital DAC circuit.
1760 */
1761 regmap_update_bits(regmap, NAU8821_R66_BIAS_ADJ,
1762 NAU8821_BIAS_VMID_SEL_MASK | NAU8821_BIAS_TESTDAC_EN,
1763 (nau8821->vref_impedance << NAU8821_BIAS_VMID_SEL_SFT) |
1764 NAU8821_BIAS_TESTDAC_EN);
1765 /* Disable short Frame Sync detection logic */
1766 regmap_update_bits(regmap, NAU8821_R1E_LEFT_TIME_SLOT,
1767 NAU8821_DIS_FS_SHORT_DET, NAU8821_DIS_FS_SHORT_DET);
1768 /* Disable Boost Driver, Automatic Short circuit protection enable */
1769 regmap_update_bits(regmap, NAU8821_R76_BOOST,
1770 NAU8821_PRECHARGE_DIS | NAU8821_HP_BOOST_DIS |
1771 NAU8821_HP_BOOST_G_DIS | NAU8821_SHORT_SHUTDOWN_EN,
1772 NAU8821_PRECHARGE_DIS | NAU8821_HP_BOOST_DIS |
1773 NAU8821_HP_BOOST_G_DIS | NAU8821_SHORT_SHUTDOWN_EN);
1774 /* Class G timer 64ms */
1775 regmap_update_bits(regmap, NAU8821_R4B_CLASSG_CTRL,
1776 NAU8821_CLASSG_TIMER_MASK,
1777 0x20 << NAU8821_CLASSG_TIMER_SFT);
1778 /* Class AB bias current to 2x, DAC Capacitor enable MSB/LSB */
1779 regmap_update_bits(regmap, NAU8821_R6A_ANALOG_CONTROL_2,
1780 NAU8821_HP_NON_CLASSG_CURRENT_2xADJ |
1781 NAU8821_DAC_CAPACITOR_MSB | NAU8821_DAC_CAPACITOR_LSB,
1782 NAU8821_HP_NON_CLASSG_CURRENT_2xADJ |
1783 NAU8821_DAC_CAPACITOR_MSB | NAU8821_DAC_CAPACITOR_LSB);
1784 /* Disable DACR/L power */
1785 regmap_update_bits(regmap, NAU8821_R80_CHARGE_PUMP,
1786 NAU8821_POWER_DOWN_DACR | NAU8821_POWER_DOWN_DACL, 0);
1787 /* DAC clock delay 2ns, VREF */
1788 regmap_update_bits(regmap, NAU8821_R73_RDAC,
1789 NAU8821_DAC_CLK_DELAY_MASK | NAU8821_DAC_VREF_MASK,
1790 (0x2 << NAU8821_DAC_CLK_DELAY_SFT) |
1791 (0x3 << NAU8821_DAC_VREF_SFT));
1792
1793 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
1794 NAU8821_MICBIAS_VOLTAGE_MASK, nau8821->micbias_voltage);
1795 /* Default oversampling/decimations settings are unusable
1796 * (audible hiss). Set it to something better.
1797 */
1798 regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE,
1799 NAU8821_ADC_SYNC_DOWN_MASK, NAU8821_ADC_SYNC_DOWN_64);
1800 regmap_update_bits(regmap, NAU8821_R2C_DAC_CTRL1,
1801 NAU8821_DAC_OVERSAMPLE_MASK, NAU8821_DAC_OVERSAMPLE_64);
1802 regmap_update_bits(regmap, NAU8821_R13_DMIC_CTRL,
1803 NAU8821_DMIC_SLEW_MASK, nau8821->dmic_slew_rate <<
1804 NAU8821_DMIC_SLEW_SFT);
1805 if (nau8821->left_input_single_end) {
1806 regmap_update_bits(regmap, NAU8821_R6B_PGA_MUTE,
1807 NAU8821_MUTE_MICNL_EN, NAU8821_MUTE_MICNL_EN);
1808 regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
1809 NAU8821_MICBIAS_LOWNOISE_EN, NAU8821_MICBIAS_LOWNOISE_EN);
1810 }
1811}
1812
1813static int nau8821_setup_irq(struct nau8821 *nau8821)
1814{
1815 struct regmap *regmap = nau8821->regmap;
1816
1817 /* Jack detection */
1818 regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL,
1819 NAU8821_JKDET_OUTPUT_EN,
1820 nau8821->jkdet_enable ? 0 : NAU8821_JKDET_OUTPUT_EN);
1821 regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL,
1822 NAU8821_JKDET_PULL_EN,
1823 nau8821->jkdet_pull_enable ? 0 : NAU8821_JKDET_PULL_EN);
1824 regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL,
1825 NAU8821_JKDET_PULL_UP,
1826 nau8821->jkdet_pull_up ? NAU8821_JKDET_PULL_UP : 0);
1827 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1828 NAU8821_JACK_POLARITY,
1829 /* jkdet_polarity - 1 is for active-low */
1830 nau8821->jkdet_polarity ? 0 : NAU8821_JACK_POLARITY);
1831 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1832 NAU8821_JACK_INSERT_DEBOUNCE_MASK,
1833 nau8821->jack_insert_debounce <<
1834 NAU8821_JACK_INSERT_DEBOUNCE_SFT);
1835 regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
1836 NAU8821_JACK_EJECT_DEBOUNCE_MASK,
1837 nau8821->jack_eject_debounce <<
1838 NAU8821_JACK_EJECT_DEBOUNCE_SFT);
1839 /* Pull up IRQ pin */
1840 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
1841 NAU8821_IRQ_PIN_PULL_UP | NAU8821_IRQ_PIN_PULL_EN |
1842 NAU8821_IRQ_OUTPUT_EN, NAU8821_IRQ_PIN_PULL_UP |
1843 NAU8821_IRQ_PIN_PULL_EN | NAU8821_IRQ_OUTPUT_EN);
1844 /* Disable interruption before codec initiation done */
1845 /* Mask unneeded IRQs: 1 - disable, 0 - enable */
1846 regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 0x3f5, 0x3f5);
1847
1848 return 0;
1849}
1850
1851/* Please keep this list alphabetically sorted */
1852static const struct dmi_system_id nau8821_quirk_table[] = {
1853 {
1854 /* Positivo CW14Q01P-V2 */
1855 .matches = {
1856 DMI_MATCH(DMI_SYS_VENDOR, "Positivo Tecnologia SA"),
1857 DMI_MATCH(DMI_BOARD_NAME, "CW14Q01P-V2"),
1858 },
1859 .driver_data = (void *)(NAU8821_JD_ACTIVE_HIGH),
1860 },
1861 {}
1862};
1863
1864static void nau8821_check_quirks(void)
1865{
1866 const struct dmi_system_id *dmi_id;
1867
1868 if (quirk_override != -1) {
1869 nau8821_quirk = quirk_override;
1870 return;
1871 }
1872
1873 dmi_id = dmi_first_match(nau8821_quirk_table);
1874 if (dmi_id)
1875 nau8821_quirk = (unsigned long)dmi_id->driver_data;
1876}
1877
1878static int nau8821_i2c_probe(struct i2c_client *i2c)
1879{
1880 struct device *dev = &i2c->dev;
1881 struct nau8821 *nau8821 = dev_get_platdata(&i2c->dev);
1882 int ret, value;
1883
1884 if (!nau8821) {
1885 nau8821 = devm_kzalloc(dev, sizeof(*nau8821), GFP_KERNEL);
1886 if (!nau8821)
1887 return -ENOMEM;
1888 nau8821_read_device_properties(dev, nau8821);
1889 }
1890 i2c_set_clientdata(i2c, nau8821);
1891
1892 nau8821->regmap = devm_regmap_init_i2c(i2c, &nau8821_regmap_config);
1893 if (IS_ERR(nau8821->regmap))
1894 return PTR_ERR(nau8821->regmap);
1895
1896 nau8821->dev = dev;
1897 nau8821->irq = i2c->irq;
1898
1899 nau8821_check_quirks();
1900
1901 if (nau8821_quirk & NAU8821_JD_ACTIVE_HIGH)
1902 nau8821->jkdet_polarity = 0;
1903
1904 nau8821_print_device_properties(nau8821);
1905
1906 nau8821_reset_chip(nau8821->regmap);
1907 ret = regmap_read(nau8821->regmap, NAU8821_R58_I2C_DEVICE_ID, &value);
1908 if (ret) {
1909 dev_err(dev, "Failed to read device id (%d)\n", ret);
1910 return ret;
1911 }
1912 nau8821_init_regs(nau8821);
1913
1914 if (i2c->irq)
1915 nau8821_setup_irq(nau8821);
1916
1917 ret = devm_snd_soc_register_component(&i2c->dev,
1918 &nau8821_component_driver, &nau8821_dai, 1);
1919
1920 return ret;
1921}
1922
1923static const struct i2c_device_id nau8821_i2c_ids[] = {
1924 { "nau8821" },
1925 { }
1926};
1927MODULE_DEVICE_TABLE(i2c, nau8821_i2c_ids);
1928
1929#ifdef CONFIG_OF
1930static const struct of_device_id nau8821_of_ids[] = {
1931 { .compatible = "nuvoton,nau8821", },
1932 {}
1933};
1934MODULE_DEVICE_TABLE(of, nau8821_of_ids);
1935#endif
1936
1937#ifdef CONFIG_ACPI
1938static const struct acpi_device_id nau8821_acpi_match[] = {
1939 { "NVTN2020", 0 },
1940 {},
1941};
1942MODULE_DEVICE_TABLE(acpi, nau8821_acpi_match);
1943#endif
1944
1945static struct i2c_driver nau8821_driver = {
1946 .driver = {
1947 .name = "nau8821",
1948 .of_match_table = of_match_ptr(nau8821_of_ids),
1949 .acpi_match_table = ACPI_PTR(nau8821_acpi_match),
1950 },
1951 .probe = nau8821_i2c_probe,
1952 .id_table = nau8821_i2c_ids,
1953};
1954module_i2c_driver(nau8821_driver);
1955
1956MODULE_DESCRIPTION("ASoC nau8821 driver");
1957MODULE_AUTHOR("John Hsu <kchsu0@nuvoton.com>");
1958MODULE_AUTHOR("Seven Lee <wtli@nuvoton.com>");
1959MODULE_LICENSE("GPL");