xref: /linux/sound/soc/codecs/nau8822.c (revision 377773dd6be500d17b94de08271ff9ed643554f1)
1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // nau8822.c  --  NAU8822 ALSA Soc Audio driver
4 //
5 // Copyright 2017 Nuvoton Technology Crop.
6 //
7 // Author: David Lin <ctlin0@nuvoton.com>
8 // Co-author: John Hsu <kchsu0@nuvoton.com>
9 // Co-author: Seven Li <wtli@nuvoton.com>
10 //
11 // Based on WM8974.c
12 
13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/clk.h>
18 #include <linux/delay.h>
19 #include <linux/pm.h>
20 #include <linux/i2c.h>
21 #include <linux/regmap.h>
22 #include <linux/slab.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/pcm_params.h>
26 #include <sound/soc.h>
27 #include <sound/initval.h>
28 #include <sound/tlv.h>
29 #include <asm/div64.h>
30 #include "nau8822.h"
31 
32 #define NAU_PLL_FREQ_MAX 100000000
33 #define NAU_PLL_FREQ_MIN 90000000
34 #define NAU_PLL_REF_MAX 33000000
35 #define NAU_PLL_REF_MIN 8000000
36 #define NAU_PLL_OPTOP_MIN 6
37 
38 static const int nau8822_mclk_scaler[] = { 10, 15, 20, 30, 40, 60, 80, 120 };
39 
40 static const struct reg_default nau8822_reg_defaults[] = {
41 	{ NAU8822_REG_POWER_MANAGEMENT_1, 0x0000 },
42 	{ NAU8822_REG_POWER_MANAGEMENT_2, 0x0000 },
43 	{ NAU8822_REG_POWER_MANAGEMENT_3, 0x0000 },
44 	{ NAU8822_REG_AUDIO_INTERFACE, 0x0050 },
45 	{ NAU8822_REG_COMPANDING_CONTROL, 0x0000 },
46 	{ NAU8822_REG_CLOCKING, 0x0140 },
47 	{ NAU8822_REG_ADDITIONAL_CONTROL, 0x0000 },
48 	{ NAU8822_REG_GPIO_CONTROL, 0x0000 },
49 	{ NAU8822_REG_JACK_DETECT_CONTROL_1, 0x0000 },
50 	{ NAU8822_REG_DAC_CONTROL, 0x0000 },
51 	{ NAU8822_REG_LEFT_DAC_DIGITAL_VOLUME, 0x00ff },
52 	{ NAU8822_REG_RIGHT_DAC_DIGITAL_VOLUME, 0x00ff },
53 	{ NAU8822_REG_JACK_DETECT_CONTROL_2, 0x0000 },
54 	{ NAU8822_REG_ADC_CONTROL, 0x0100 },
55 	{ NAU8822_REG_LEFT_ADC_DIGITAL_VOLUME, 0x00ff },
56 	{ NAU8822_REG_RIGHT_ADC_DIGITAL_VOLUME, 0x00ff },
57 	{ NAU8822_REG_EQ1, 0x012c },
58 	{ NAU8822_REG_EQ2, 0x002c },
59 	{ NAU8822_REG_EQ3, 0x002c },
60 	{ NAU8822_REG_EQ4, 0x002c },
61 	{ NAU8822_REG_EQ5, 0x002c },
62 	{ NAU8822_REG_DAC_LIMITER_1, 0x0032 },
63 	{ NAU8822_REG_DAC_LIMITER_2, 0x0000 },
64 	{ NAU8822_REG_NOTCH_FILTER_1, 0x0000 },
65 	{ NAU8822_REG_NOTCH_FILTER_2, 0x0000 },
66 	{ NAU8822_REG_NOTCH_FILTER_3, 0x0000 },
67 	{ NAU8822_REG_NOTCH_FILTER_4, 0x0000 },
68 	{ NAU8822_REG_ALC_CONTROL_1, 0x0038 },
69 	{ NAU8822_REG_ALC_CONTROL_2, 0x000b },
70 	{ NAU8822_REG_ALC_CONTROL_3, 0x0032 },
71 	{ NAU8822_REG_NOISE_GATE, 0x0010 },
72 	{ NAU8822_REG_PLL_N, 0x0008 },
73 	{ NAU8822_REG_PLL_K1, 0x000c },
74 	{ NAU8822_REG_PLL_K2, 0x0093 },
75 	{ NAU8822_REG_PLL_K3, 0x00e9 },
76 	{ NAU8822_REG_3D_CONTROL, 0x0000 },
77 	{ NAU8822_REG_RIGHT_SPEAKER_CONTROL, 0x0000 },
78 	{ NAU8822_REG_INPUT_CONTROL, 0x0033 },
79 	{ NAU8822_REG_LEFT_INP_PGA_CONTROL, 0x0010 },
80 	{ NAU8822_REG_RIGHT_INP_PGA_CONTROL, 0x0010 },
81 	{ NAU8822_REG_LEFT_ADC_BOOST_CONTROL, 0x0100 },
82 	{ NAU8822_REG_RIGHT_ADC_BOOST_CONTROL, 0x0100 },
83 	{ NAU8822_REG_OUTPUT_CONTROL, 0x0002 },
84 	{ NAU8822_REG_LEFT_MIXER_CONTROL, 0x0001 },
85 	{ NAU8822_REG_RIGHT_MIXER_CONTROL, 0x0001 },
86 	{ NAU8822_REG_LHP_VOLUME, 0x0039 },
87 	{ NAU8822_REG_RHP_VOLUME, 0x0039 },
88 	{ NAU8822_REG_LSPKOUT_VOLUME, 0x0039 },
89 	{ NAU8822_REG_RSPKOUT_VOLUME, 0x0039 },
90 	{ NAU8822_REG_AUX2_MIXER, 0x0001 },
91 	{ NAU8822_REG_AUX1_MIXER, 0x0001 },
92 	{ NAU8822_REG_POWER_MANAGEMENT_4, 0x0000 },
93 	{ NAU8822_REG_LEFT_TIME_SLOT, 0x0000 },
94 	{ NAU8822_REG_MISC, 0x0020 },
95 	{ NAU8822_REG_RIGHT_TIME_SLOT, 0x0000 },
96 	{ NAU8822_REG_DEVICE_REVISION, 0x007f },
97 	{ NAU8822_REG_DEVICE_ID, 0x001a },
98 	{ NAU8822_REG_DAC_DITHER, 0x0114 },
99 	{ NAU8822_REG_ALC_ENHANCE_1, 0x0000 },
100 	{ NAU8822_REG_ALC_ENHANCE_2, 0x0000 },
101 	{ NAU8822_REG_192KHZ_SAMPLING, 0x0008 },
102 	{ NAU8822_REG_MISC_CONTROL, 0x0000 },
103 	{ NAU8822_REG_INPUT_TIEOFF, 0x0000 },
104 	{ NAU8822_REG_POWER_REDUCTION, 0x0000 },
105 	{ NAU8822_REG_AGC_PEAK2PEAK, 0x0000 },
106 	{ NAU8822_REG_AGC_PEAK_DETECT, 0x0000 },
107 	{ NAU8822_REG_AUTOMUTE_CONTROL, 0x0000 },
108 	{ NAU8822_REG_OUTPUT_TIEOFF, 0x0000 },
109 };
110 
nau8822_readable_reg(struct device * dev,unsigned int reg)111 static bool nau8822_readable_reg(struct device *dev, unsigned int reg)
112 {
113 	switch (reg) {
114 	case NAU8822_REG_RESET ... NAU8822_REG_JACK_DETECT_CONTROL_1:
115 	case NAU8822_REG_DAC_CONTROL ... NAU8822_REG_LEFT_ADC_DIGITAL_VOLUME:
116 	case NAU8822_REG_RIGHT_ADC_DIGITAL_VOLUME:
117 	case NAU8822_REG_EQ1 ... NAU8822_REG_EQ5:
118 	case NAU8822_REG_DAC_LIMITER_1 ... NAU8822_REG_DAC_LIMITER_2:
119 	case NAU8822_REG_NOTCH_FILTER_1 ... NAU8822_REG_NOTCH_FILTER_4:
120 	case NAU8822_REG_ALC_CONTROL_1 ...NAU8822_REG_PLL_K3:
121 	case NAU8822_REG_3D_CONTROL:
122 	case NAU8822_REG_RIGHT_SPEAKER_CONTROL:
123 	case NAU8822_REG_INPUT_CONTROL ... NAU8822_REG_LEFT_ADC_BOOST_CONTROL:
124 	case NAU8822_REG_RIGHT_ADC_BOOST_CONTROL ... NAU8822_REG_AUX1_MIXER:
125 	case NAU8822_REG_POWER_MANAGEMENT_4 ... NAU8822_REG_DEVICE_ID:
126 	case NAU8822_REG_DAC_DITHER:
127 	case NAU8822_REG_ALC_ENHANCE_1 ... NAU8822_REG_MISC_CONTROL:
128 	case NAU8822_REG_INPUT_TIEOFF ... NAU8822_REG_OUTPUT_TIEOFF:
129 		return true;
130 	default:
131 		return false;
132 	}
133 }
134 
nau8822_writeable_reg(struct device * dev,unsigned int reg)135 static bool nau8822_writeable_reg(struct device *dev, unsigned int reg)
136 {
137 	switch (reg) {
138 	case NAU8822_REG_RESET ... NAU8822_REG_JACK_DETECT_CONTROL_1:
139 	case NAU8822_REG_DAC_CONTROL ... NAU8822_REG_LEFT_ADC_DIGITAL_VOLUME:
140 	case NAU8822_REG_RIGHT_ADC_DIGITAL_VOLUME:
141 	case NAU8822_REG_EQ1 ... NAU8822_REG_EQ5:
142 	case NAU8822_REG_DAC_LIMITER_1 ... NAU8822_REG_DAC_LIMITER_2:
143 	case NAU8822_REG_NOTCH_FILTER_1 ... NAU8822_REG_NOTCH_FILTER_4:
144 	case NAU8822_REG_ALC_CONTROL_1 ...NAU8822_REG_PLL_K3:
145 	case NAU8822_REG_3D_CONTROL:
146 	case NAU8822_REG_RIGHT_SPEAKER_CONTROL:
147 	case NAU8822_REG_INPUT_CONTROL ... NAU8822_REG_LEFT_ADC_BOOST_CONTROL:
148 	case NAU8822_REG_RIGHT_ADC_BOOST_CONTROL ... NAU8822_REG_AUX1_MIXER:
149 	case NAU8822_REG_POWER_MANAGEMENT_4 ... NAU8822_REG_DEVICE_ID:
150 	case NAU8822_REG_DAC_DITHER:
151 	case NAU8822_REG_ALC_ENHANCE_1 ... NAU8822_REG_MISC_CONTROL:
152 	case NAU8822_REG_INPUT_TIEOFF ... NAU8822_REG_OUTPUT_TIEOFF:
153 		return true;
154 	default:
155 		return false;
156 	}
157 }
158 
nau8822_volatile(struct device * dev,unsigned int reg)159 static bool nau8822_volatile(struct device *dev, unsigned int reg)
160 {
161 	switch (reg) {
162 	case NAU8822_REG_RESET:
163 	case NAU8822_REG_DEVICE_REVISION:
164 	case NAU8822_REG_DEVICE_ID:
165 	case NAU8822_REG_AGC_PEAK2PEAK:
166 	case NAU8822_REG_AGC_PEAK_DETECT:
167 	case NAU8822_REG_AUTOMUTE_CONTROL:
168 		return true;
169 	default:
170 		return false;
171 	}
172 }
173 
174 /* The EQ parameters get function is to get the 5 band equalizer control.
175  * The regmap raw read can't work here because regmap doesn't provide
176  * value format for value width of 9 bits. Therefore, the driver reads data
177  * from cache and makes value format according to the endianness of
178  * bytes type control element.
179  */
nau8822_eq_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)180 static int nau8822_eq_get(struct snd_kcontrol *kcontrol,
181 	struct snd_ctl_elem_value *ucontrol)
182 {
183 	struct snd_soc_component *component =
184 			snd_soc_kcontrol_component(kcontrol);
185 	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
186 	int i, reg;
187 	u16 reg_val, *val;
188 	__be16 tmp;
189 
190 	val = (u16 *)ucontrol->value.bytes.data;
191 	reg = NAU8822_REG_EQ1;
192 	for (i = 0; i < params->max / sizeof(u16); i++) {
193 		reg_val = snd_soc_component_read(component, reg + i);
194 		/* conversion of 16-bit integers between native CPU format
195 		 * and big endian format
196 		 */
197 		tmp = cpu_to_be16(reg_val);
198 		memcpy(val + i, &tmp, sizeof(tmp));
199 	}
200 
201 	return 0;
202 }
203 
204 /* The EQ parameters put function is to make configuration of 5 band equalizer
205  * control. These configuration includes central frequency, equalizer gain,
206  * cut-off frequency, bandwidth control, and equalizer path.
207  * The regmap raw write can't work here because regmap doesn't provide
208  * register and value format for register with address 7 bits and value 9 bits.
209  * Therefore, the driver makes value format according to the endianness of
210  * bytes type control element and writes data to codec.
211  */
nau8822_eq_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)212 static int nau8822_eq_put(struct snd_kcontrol *kcontrol,
213 	struct snd_ctl_elem_value *ucontrol)
214 {
215 	struct snd_soc_component *component =
216 			snd_soc_kcontrol_component(kcontrol);
217 	struct soc_bytes_ext *params = (void *)kcontrol->private_value;
218 	void *data;
219 	u16 *val, value;
220 	int i, reg, ret;
221 	__be16 *tmp;
222 
223 	data = kmemdup(ucontrol->value.bytes.data,
224 		params->max, GFP_KERNEL | GFP_DMA);
225 	if (!data)
226 		return -ENOMEM;
227 
228 	val = (u16 *)data;
229 	reg = NAU8822_REG_EQ1;
230 	for (i = 0; i < params->max / sizeof(u16); i++) {
231 		/* conversion of 16-bit integers between native CPU format
232 		 * and big endian format
233 		 */
234 		tmp = (__be16 *)(val + i);
235 		value = be16_to_cpup(tmp);
236 		ret = snd_soc_component_write(component, reg + i, value);
237 		if (ret) {
238 			dev_err(component->dev,
239 			    "EQ configuration fail, register: %x ret: %d\n",
240 			    reg + i, ret);
241 			kfree(data);
242 			return ret;
243 		}
244 	}
245 	kfree(data);
246 
247 	return 0;
248 }
249 
250 static const char * const nau8822_companding[] = {
251 	"Off", "NC", "u-law", "A-law"};
252 
253 static const struct soc_enum nau8822_companding_adc_enum =
254 	SOC_ENUM_SINGLE(NAU8822_REG_COMPANDING_CONTROL, NAU8822_ADCCM_SFT,
255 		ARRAY_SIZE(nau8822_companding), nau8822_companding);
256 
257 static const struct soc_enum nau8822_companding_dac_enum =
258 	SOC_ENUM_SINGLE(NAU8822_REG_COMPANDING_CONTROL, NAU8822_DACCM_SFT,
259 		ARRAY_SIZE(nau8822_companding), nau8822_companding);
260 
261 static const char * const nau8822_eqmode[] = {"Capture", "Playback"};
262 
263 static const struct soc_enum nau8822_eqmode_enum =
264 	SOC_ENUM_SINGLE(NAU8822_REG_EQ1, NAU8822_EQM_SFT,
265 		ARRAY_SIZE(nau8822_eqmode), nau8822_eqmode);
266 
267 static const char * const nau8822_alc1[] = {"Off", "Right", "Left", "Both"};
268 static const char * const nau8822_alc3[] = {"Normal", "Limiter"};
269 
270 static const struct soc_enum nau8822_alc_enable_enum =
271 	SOC_ENUM_SINGLE(NAU8822_REG_ALC_CONTROL_1, NAU8822_ALCEN_SFT,
272 		ARRAY_SIZE(nau8822_alc1), nau8822_alc1);
273 
274 static const struct soc_enum nau8822_alc_mode_enum =
275 	SOC_ENUM_SINGLE(NAU8822_REG_ALC_CONTROL_3, NAU8822_ALCM_SFT,
276 		ARRAY_SIZE(nau8822_alc3), nau8822_alc3);
277 
278 static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1);
279 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0);
280 static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0);
281 static const DECLARE_TLV_DB_SCALE(pga_boost_tlv, 0, 2000, 0);
282 static const DECLARE_TLV_DB_SCALE(boost_tlv, -1500, 300, 1);
283 static const DECLARE_TLV_DB_SCALE(limiter_tlv, 0, 100, 0);
284 
285 static const struct snd_kcontrol_new nau8822_snd_controls[] = {
286 	SOC_ENUM("ADC Companding", nau8822_companding_adc_enum),
287 	SOC_ENUM("DAC Companding", nau8822_companding_dac_enum),
288 
289 	SOC_ENUM("EQ Function", nau8822_eqmode_enum),
290 	SND_SOC_BYTES_EXT("EQ Parameters", 10,
291 		  nau8822_eq_get, nau8822_eq_put),
292 
293 	SOC_DOUBLE("DAC Inversion Switch",
294 		NAU8822_REG_DAC_CONTROL, 0, 1, 1, 0),
295 	SOC_DOUBLE_R_TLV("PCM Volume",
296 		NAU8822_REG_LEFT_DAC_DIGITAL_VOLUME,
297 		NAU8822_REG_RIGHT_DAC_DIGITAL_VOLUME, 0, 255, 0, digital_tlv),
298 
299 	SOC_SINGLE("High Pass Filter Switch",
300 		NAU8822_REG_ADC_CONTROL, 8, 1, 0),
301 	SOC_SINGLE("High Pass Cut Off",
302 		NAU8822_REG_ADC_CONTROL, 4, 7, 0),
303 
304 	SOC_DOUBLE("ADC Inversion Switch",
305 		NAU8822_REG_ADC_CONTROL, 0, 1, 1, 0),
306 	SOC_DOUBLE_R_TLV("ADC Volume",
307 		NAU8822_REG_LEFT_ADC_DIGITAL_VOLUME,
308 		NAU8822_REG_RIGHT_ADC_DIGITAL_VOLUME, 0, 255, 0, digital_tlv),
309 
310 	SOC_SINGLE("DAC Limiter Switch",
311 		NAU8822_REG_DAC_LIMITER_1, 8, 1, 0),
312 	SOC_SINGLE("DAC Limiter Decay",
313 		NAU8822_REG_DAC_LIMITER_1, 4, 15, 0),
314 	SOC_SINGLE("DAC Limiter Attack",
315 		NAU8822_REG_DAC_LIMITER_1, 0, 15, 0),
316 	SOC_SINGLE("DAC Limiter Threshold",
317 		NAU8822_REG_DAC_LIMITER_2, 4, 7, 0),
318 	SOC_SINGLE_TLV("DAC Limiter Volume",
319 		NAU8822_REG_DAC_LIMITER_2, 0, 12, 0, limiter_tlv),
320 
321 	SOC_ENUM("ALC Mode", nau8822_alc_mode_enum),
322 	SOC_ENUM("ALC Enable Switch", nau8822_alc_enable_enum),
323 	SOC_SINGLE("ALC Min Gain",
324 		NAU8822_REG_ALC_CONTROL_1, 0, 7, 0),
325 	SOC_SINGLE("ALC Max Gain",
326 		NAU8822_REG_ALC_CONTROL_1, 3, 7, 0),
327 	SOC_SINGLE("ALC Hold",
328 		NAU8822_REG_ALC_CONTROL_2, 4, 10, 0),
329 	SOC_SINGLE("ALC Target",
330 		NAU8822_REG_ALC_CONTROL_2, 0, 15, 0),
331 	SOC_SINGLE("ALC Decay",
332 		NAU8822_REG_ALC_CONTROL_3, 4, 10, 0),
333 	SOC_SINGLE("ALC Attack",
334 		NAU8822_REG_ALC_CONTROL_3, 0, 10, 0),
335 	SOC_SINGLE("ALC Noise Gate Switch",
336 		NAU8822_REG_NOISE_GATE, 3, 1, 0),
337 	SOC_SINGLE("ALC Noise Gate Threshold",
338 		NAU8822_REG_NOISE_GATE, 0, 7, 0),
339 
340 	SOC_DOUBLE_R("PGA ZC Switch",
341 		NAU8822_REG_LEFT_INP_PGA_CONTROL,
342 		NAU8822_REG_RIGHT_INP_PGA_CONTROL,
343 		7, 1, 0),
344 	SOC_DOUBLE_R_TLV("PGA Volume",
345 		NAU8822_REG_LEFT_INP_PGA_CONTROL,
346 		NAU8822_REG_RIGHT_INP_PGA_CONTROL, 0, 63, 0, inpga_tlv),
347 
348 	SOC_DOUBLE_R("Headphone ZC Switch",
349 		NAU8822_REG_LHP_VOLUME,
350 		NAU8822_REG_RHP_VOLUME, 7, 1, 0),
351 	SOC_DOUBLE_R("Headphone Playback Switch",
352 		NAU8822_REG_LHP_VOLUME,
353 		NAU8822_REG_RHP_VOLUME, 6, 1, 1),
354 	SOC_DOUBLE_R_TLV("Headphone Volume",
355 		NAU8822_REG_LHP_VOLUME,
356 		NAU8822_REG_RHP_VOLUME,	0, 63, 0, spk_tlv),
357 
358 	SOC_DOUBLE_R("Speaker ZC Switch",
359 		NAU8822_REG_LSPKOUT_VOLUME,
360 		NAU8822_REG_RSPKOUT_VOLUME, 7, 1, 0),
361 	SOC_DOUBLE_R("Speaker Playback Switch",
362 		NAU8822_REG_LSPKOUT_VOLUME,
363 		NAU8822_REG_RSPKOUT_VOLUME, 6, 1, 1),
364 	SOC_DOUBLE_R_TLV("Speaker Volume",
365 		NAU8822_REG_LSPKOUT_VOLUME,
366 		NAU8822_REG_RSPKOUT_VOLUME, 0, 63, 0, spk_tlv),
367 
368 	SOC_DOUBLE_R("AUXOUT Playback Switch",
369 		NAU8822_REG_AUX2_MIXER,
370 		NAU8822_REG_AUX1_MIXER, 6, 1, 1),
371 
372 	SOC_DOUBLE_R_TLV("PGA Boost Volume",
373 		NAU8822_REG_LEFT_ADC_BOOST_CONTROL,
374 		NAU8822_REG_RIGHT_ADC_BOOST_CONTROL, 8, 1, 0, pga_boost_tlv),
375 	SOC_DOUBLE_R_TLV("L2/R2 Boost Volume",
376 		NAU8822_REG_LEFT_ADC_BOOST_CONTROL,
377 		NAU8822_REG_RIGHT_ADC_BOOST_CONTROL, 4, 7, 0, boost_tlv),
378 	SOC_DOUBLE_R_TLV("Aux Boost Volume",
379 		NAU8822_REG_LEFT_ADC_BOOST_CONTROL,
380 		NAU8822_REG_RIGHT_ADC_BOOST_CONTROL, 0, 7, 0, boost_tlv),
381 
382 	SOC_SINGLE("DAC 128x Oversampling Switch",
383 		NAU8822_REG_DAC_CONTROL, 5, 1, 0),
384 	SOC_SINGLE("ADC 128x Oversampling Switch",
385 		NAU8822_REG_ADC_CONTROL, 5, 1, 0),
386 };
387 
388 /* LMAIN and RMAIN Mixer */
389 static const struct snd_kcontrol_new nau8822_left_out_mixer[] = {
390 	SOC_DAPM_SINGLE("LINMIX Switch",
391 		NAU8822_REG_LEFT_MIXER_CONTROL, 1, 1, 0),
392 	SOC_DAPM_SINGLE("LAUX Switch",
393 		NAU8822_REG_LEFT_MIXER_CONTROL, 5, 1, 0),
394 	SOC_DAPM_SINGLE("LDAC Switch",
395 		NAU8822_REG_LEFT_MIXER_CONTROL, 0, 1, 0),
396 	SOC_DAPM_SINGLE("RDAC Switch",
397 		NAU8822_REG_OUTPUT_CONTROL, 5, 1, 0),
398 };
399 
400 static const struct snd_kcontrol_new nau8822_right_out_mixer[] = {
401 	SOC_DAPM_SINGLE("RINMIX Switch",
402 		NAU8822_REG_RIGHT_MIXER_CONTROL, 1, 1, 0),
403 	SOC_DAPM_SINGLE("RAUX Switch",
404 		NAU8822_REG_RIGHT_MIXER_CONTROL, 5, 1, 0),
405 	SOC_DAPM_SINGLE("RDAC Switch",
406 		NAU8822_REG_RIGHT_MIXER_CONTROL, 0, 1, 0),
407 	SOC_DAPM_SINGLE("LDAC Switch",
408 		NAU8822_REG_OUTPUT_CONTROL, 6, 1, 0),
409 };
410 
411 /* AUX1 and AUX2 Mixer */
412 static const struct snd_kcontrol_new nau8822_auxout1_mixer[] = {
413 	SOC_DAPM_SINGLE("RDAC Switch", NAU8822_REG_AUX1_MIXER, 0, 1, 0),
414 	SOC_DAPM_SINGLE("RMIX Switch", NAU8822_REG_AUX1_MIXER, 1, 1, 0),
415 	SOC_DAPM_SINGLE("RINMIX Switch", NAU8822_REG_AUX1_MIXER, 2, 1, 0),
416 	SOC_DAPM_SINGLE("LDAC Switch", NAU8822_REG_AUX1_MIXER, 3, 1, 0),
417 	SOC_DAPM_SINGLE("LMIX Switch", NAU8822_REG_AUX1_MIXER, 4, 1, 0),
418 };
419 
420 static const struct snd_kcontrol_new nau8822_auxout2_mixer[] = {
421 	SOC_DAPM_SINGLE("LDAC Switch", NAU8822_REG_AUX2_MIXER, 0, 1, 0),
422 	SOC_DAPM_SINGLE("LMIX Switch", NAU8822_REG_AUX2_MIXER, 1, 1, 0),
423 	SOC_DAPM_SINGLE("LINMIX Switch", NAU8822_REG_AUX2_MIXER, 2, 1, 0),
424 	SOC_DAPM_SINGLE("AUX1MIX Output Switch",
425 		NAU8822_REG_AUX2_MIXER, 3, 1, 0),
426 };
427 
428 /* Input PGA */
429 static const struct snd_kcontrol_new nau8822_left_input_mixer[] = {
430 	SOC_DAPM_SINGLE("L2 Switch", NAU8822_REG_INPUT_CONTROL, 2, 1, 0),
431 	SOC_DAPM_SINGLE("MicN Switch", NAU8822_REG_INPUT_CONTROL, 1, 1, 0),
432 	SOC_DAPM_SINGLE("MicP Switch", NAU8822_REG_INPUT_CONTROL, 0, 1, 0),
433 };
434 static const struct snd_kcontrol_new nau8822_right_input_mixer[] = {
435 	SOC_DAPM_SINGLE("R2 Switch", NAU8822_REG_INPUT_CONTROL, 6, 1, 0),
436 	SOC_DAPM_SINGLE("MicN Switch", NAU8822_REG_INPUT_CONTROL, 5, 1, 0),
437 	SOC_DAPM_SINGLE("MicP Switch", NAU8822_REG_INPUT_CONTROL, 4, 1, 0),
438 };
439 
440 /* Loopback Switch */
441 static const struct snd_kcontrol_new nau8822_loopback =
442 	SOC_DAPM_SINGLE("Switch", NAU8822_REG_COMPANDING_CONTROL,
443 		NAU8822_ADDAP_SFT, 1, 0);
444 
check_mclk_select_pll(struct snd_soc_dapm_widget * source,struct snd_soc_dapm_widget * sink)445 static int check_mclk_select_pll(struct snd_soc_dapm_widget *source,
446 			 struct snd_soc_dapm_widget *sink)
447 {
448 	struct snd_soc_component *component =
449 		snd_soc_dapm_to_component(source->dapm);
450 	unsigned int value;
451 
452 	value = snd_soc_component_read(component, NAU8822_REG_CLOCKING);
453 
454 	return (value & NAU8822_CLKM_MASK);
455 }
456 
457 static const struct snd_soc_dapm_widget nau8822_dapm_widgets[] = {
458 	SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback",
459 		NAU8822_REG_POWER_MANAGEMENT_3, 0, 0),
460 	SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback",
461 		NAU8822_REG_POWER_MANAGEMENT_3, 1, 0),
462 	SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture",
463 		NAU8822_REG_POWER_MANAGEMENT_2, 0, 0),
464 	SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture",
465 		NAU8822_REG_POWER_MANAGEMENT_2, 1, 0),
466 
467 	SOC_MIXER_ARRAY("Left Output Mixer",
468 		NAU8822_REG_POWER_MANAGEMENT_3, 2, 0, nau8822_left_out_mixer),
469 	SOC_MIXER_ARRAY("Right Output Mixer",
470 		NAU8822_REG_POWER_MANAGEMENT_3,	3, 0, nau8822_right_out_mixer),
471 	SOC_MIXER_ARRAY("AUX1 Output Mixer",
472 		NAU8822_REG_POWER_MANAGEMENT_1, 7, 0, nau8822_auxout1_mixer),
473 	SOC_MIXER_ARRAY("AUX2 Output Mixer",
474 		NAU8822_REG_POWER_MANAGEMENT_1,	6, 0, nau8822_auxout2_mixer),
475 
476 	SOC_MIXER_ARRAY("Left Input Mixer",
477 		NAU8822_REG_POWER_MANAGEMENT_2,
478 		2, 0, nau8822_left_input_mixer),
479 	SOC_MIXER_ARRAY("Right Input Mixer",
480 		NAU8822_REG_POWER_MANAGEMENT_2,
481 		3, 0, nau8822_right_input_mixer),
482 
483 	SND_SOC_DAPM_PGA("Left Boost Mixer",
484 		NAU8822_REG_POWER_MANAGEMENT_2, 4, 0, NULL, 0),
485 	SND_SOC_DAPM_PGA("Right Boost Mixer",
486 		NAU8822_REG_POWER_MANAGEMENT_2, 5, 0, NULL, 0),
487 
488 	SND_SOC_DAPM_PGA("Left Capture PGA",
489 		NAU8822_REG_LEFT_INP_PGA_CONTROL, 6, 1, NULL, 0),
490 	SND_SOC_DAPM_PGA("Right Capture PGA",
491 		NAU8822_REG_RIGHT_INP_PGA_CONTROL, 6, 1, NULL, 0),
492 
493 	SND_SOC_DAPM_PGA("Left Headphone Out",
494 		NAU8822_REG_POWER_MANAGEMENT_2, 7, 0, NULL, 0),
495 	SND_SOC_DAPM_PGA("Right Headphone Out",
496 		NAU8822_REG_POWER_MANAGEMENT_2, 8, 0, NULL, 0),
497 
498 	SND_SOC_DAPM_PGA("Left Speaker Out",
499 		 NAU8822_REG_POWER_MANAGEMENT_3, 6, 0, NULL, 0),
500 	SND_SOC_DAPM_PGA("Right Speaker Out",
501 		NAU8822_REG_POWER_MANAGEMENT_3,	5, 0, NULL, 0),
502 
503 	SND_SOC_DAPM_PGA("AUX1 Out",
504 		NAU8822_REG_POWER_MANAGEMENT_3,	8, 0, NULL, 0),
505 	SND_SOC_DAPM_PGA("AUX2 Out",
506 		NAU8822_REG_POWER_MANAGEMENT_3,	7, 0, NULL, 0),
507 
508 	SND_SOC_DAPM_SUPPLY("Mic Bias",
509 		NAU8822_REG_POWER_MANAGEMENT_1,	4, 0, NULL, 0),
510 	SND_SOC_DAPM_SUPPLY("PLL",
511 		NAU8822_REG_POWER_MANAGEMENT_1,	5, 0, NULL, 0),
512 
513 	SND_SOC_DAPM_SWITCH("Digital Loopback", SND_SOC_NOPM, 0, 0,
514 		&nau8822_loopback),
515 
516 	SND_SOC_DAPM_INPUT("LMICN"),
517 	SND_SOC_DAPM_INPUT("LMICP"),
518 	SND_SOC_DAPM_INPUT("RMICN"),
519 	SND_SOC_DAPM_INPUT("RMICP"),
520 	SND_SOC_DAPM_INPUT("LAUX"),
521 	SND_SOC_DAPM_INPUT("RAUX"),
522 	SND_SOC_DAPM_INPUT("L2"),
523 	SND_SOC_DAPM_INPUT("R2"),
524 	SND_SOC_DAPM_OUTPUT("LHP"),
525 	SND_SOC_DAPM_OUTPUT("RHP"),
526 	SND_SOC_DAPM_OUTPUT("LSPK"),
527 	SND_SOC_DAPM_OUTPUT("RSPK"),
528 	SND_SOC_DAPM_OUTPUT("AUXOUT1"),
529 	SND_SOC_DAPM_OUTPUT("AUXOUT2"),
530 };
531 
532 static const struct snd_soc_dapm_route nau8822_dapm_routes[] = {
533 	{"Right DAC", NULL, "PLL", check_mclk_select_pll},
534 	{"Left DAC", NULL, "PLL", check_mclk_select_pll},
535 
536 	/* LMAIN and RMAIN Mixer */
537 	{"Right Output Mixer", "LDAC Switch", "Left DAC"},
538 	{"Right Output Mixer", "RDAC Switch", "Right DAC"},
539 	{"Right Output Mixer", "RAUX Switch", "RAUX"},
540 	{"Right Output Mixer", "RINMIX Switch", "Right Boost Mixer"},
541 
542 	{"Left Output Mixer", "LDAC Switch", "Left DAC"},
543 	{"Left Output Mixer", "RDAC Switch", "Right DAC"},
544 	{"Left Output Mixer", "LAUX Switch", "LAUX"},
545 	{"Left Output Mixer", "LINMIX Switch", "Left Boost Mixer"},
546 
547 	/* AUX1 and AUX2 Mixer */
548 	{"AUX1 Output Mixer", "RDAC Switch", "Right DAC"},
549 	{"AUX1 Output Mixer", "RMIX Switch", "Right Output Mixer"},
550 	{"AUX1 Output Mixer", "RINMIX Switch", "Right Boost Mixer"},
551 	{"AUX1 Output Mixer", "LDAC Switch", "Left DAC"},
552 	{"AUX1 Output Mixer", "LMIX Switch", "Left Output Mixer"},
553 
554 	{"AUX2 Output Mixer", "LDAC Switch", "Left DAC"},
555 	{"AUX2 Output Mixer", "LMIX Switch", "Left Output Mixer"},
556 	{"AUX2 Output Mixer", "LINMIX Switch", "Left Boost Mixer"},
557 	{"AUX2 Output Mixer", "AUX1MIX Output Switch", "AUX1 Output Mixer"},
558 
559 	/* Outputs */
560 	{"Right Headphone Out", NULL, "Right Output Mixer"},
561 	{"RHP", NULL, "Right Headphone Out"},
562 
563 	{"Left Headphone Out", NULL, "Left Output Mixer"},
564 	{"LHP", NULL, "Left Headphone Out"},
565 
566 	{"Right Speaker Out", NULL, "Right Output Mixer"},
567 	{"RSPK", NULL, "Right Speaker Out"},
568 
569 	{"Left Speaker Out", NULL, "Left Output Mixer"},
570 	{"LSPK", NULL, "Left Speaker Out"},
571 
572 	{"AUX1 Out", NULL, "AUX1 Output Mixer"},
573 	{"AUX2 Out", NULL, "AUX2 Output Mixer"},
574 	{"AUXOUT1", NULL, "AUX1 Out"},
575 	{"AUXOUT2", NULL, "AUX2 Out"},
576 
577 	/* Boost Mixer */
578 	{"Right ADC", NULL, "PLL", check_mclk_select_pll},
579 	{"Left ADC", NULL, "PLL", check_mclk_select_pll},
580 
581 	{"Right ADC", NULL, "Right Boost Mixer"},
582 
583 	{"Right Boost Mixer", NULL, "RAUX"},
584 	{"Right Boost Mixer", NULL, "Right Capture PGA"},
585 	{"Right Boost Mixer", NULL, "R2"},
586 
587 	{"Left ADC", NULL, "Left Boost Mixer"},
588 
589 	{"Left Boost Mixer", NULL, "LAUX"},
590 	{"Left Boost Mixer", NULL, "Left Capture PGA"},
591 	{"Left Boost Mixer", NULL, "L2"},
592 
593 	/* Input PGA */
594 	{"Right Capture PGA", NULL, "Right Input Mixer"},
595 	{"Left Capture PGA", NULL, "Left Input Mixer"},
596 
597 	/* Enable Microphone Power */
598 	{"Right Capture PGA", NULL, "Mic Bias"},
599 	{"Left Capture PGA", NULL, "Mic Bias"},
600 
601 	{"Right Input Mixer", "R2 Switch", "R2"},
602 	{"Right Input Mixer", "MicN Switch", "RMICN"},
603 	{"Right Input Mixer", "MicP Switch", "RMICP"},
604 
605 	{"Left Input Mixer", "L2 Switch", "L2"},
606 	{"Left Input Mixer", "MicN Switch", "LMICN"},
607 	{"Left Input Mixer", "MicP Switch", "LMICP"},
608 
609 	/* Digital Loopback */
610 	{"Digital Loopback", "Switch", "Left ADC"},
611 	{"Digital Loopback", "Switch", "Right ADC"},
612 	{"Left DAC", NULL, "Digital Loopback"},
613 	{"Right DAC", NULL, "Digital Loopback"},
614 };
615 
nau8822_calc_pll(unsigned int pll_in,unsigned int fs,struct nau8822_pll * pll_param)616 static int nau8822_calc_pll(unsigned int pll_in, unsigned int fs,
617 				struct nau8822_pll *pll_param)
618 {
619 	u64 f2, f2_max, pll_ratio;
620 	int i, scal_sel;
621 
622 	if (pll_in > NAU_PLL_REF_MAX || pll_in < NAU_PLL_REF_MIN)
623 		return -EINVAL;
624 	f2_max = 0;
625 	scal_sel = ARRAY_SIZE(nau8822_mclk_scaler);
626 
627 	for (i = 0; i < scal_sel; i++) {
628 		f2 = 256 * fs * 4 * nau8822_mclk_scaler[i] / 10;
629 		if (f2 > NAU_PLL_FREQ_MIN && f2 < NAU_PLL_FREQ_MAX &&
630 			f2_max < f2) {
631 			f2_max = f2;
632 			scal_sel = i;
633 		}
634 	}
635 
636 	if (ARRAY_SIZE(nau8822_mclk_scaler) == scal_sel)
637 		return -EINVAL;
638 	pll_param->mclk_scaler = scal_sel;
639 	f2 = f2_max;
640 
641 	/* Calculate the PLL 4-bit integer input and the PLL 24-bit fractional
642 	 * input; round up the 24+4bit.
643 	 */
644 	pll_ratio = div_u64(f2 << 28, pll_in);
645 	pll_param->pre_factor = 0;
646 	if (((pll_ratio >> 28) & 0xF) < NAU_PLL_OPTOP_MIN) {
647 		pll_ratio <<= 1;
648 		pll_param->pre_factor = 1;
649 	}
650 	pll_param->pll_int = (pll_ratio >> 28) & 0xF;
651 	pll_param->pll_frac = ((pll_ratio & 0xFFFFFFF) >> 4);
652 
653 	return 0;
654 }
655 
nau8822_config_clkdiv(struct snd_soc_dai * dai,int div,int rate)656 static int nau8822_config_clkdiv(struct snd_soc_dai *dai, int div, int rate)
657 {
658 	struct snd_soc_component *component = dai->component;
659 	struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component);
660 	struct nau8822_pll *pll = &nau8822->pll;
661 	int i, sclk, imclk;
662 
663 	switch (nau8822->div_id) {
664 	case NAU8822_CLK_MCLK:
665 		/* Configure the master clock prescaler div to make system
666 		 * clock to approximate the internal master clock (IMCLK);
667 		 * and large or equal to IMCLK.
668 		 */
669 		div = 0;
670 		imclk = rate * 256;
671 		for (i = 1; i < ARRAY_SIZE(nau8822_mclk_scaler); i++) {
672 			sclk = (nau8822->sysclk * 10) /	nau8822_mclk_scaler[i];
673 			if (sclk < imclk)
674 				break;
675 			div = i;
676 		}
677 		dev_dbg(component->dev, "master clock prescaler %x for fs %d\n",
678 			div, rate);
679 
680 		/* master clock from MCLK and disable PLL */
681 		snd_soc_component_update_bits(component,
682 			NAU8822_REG_CLOCKING, NAU8822_MCLKSEL_MASK,
683 			(div << NAU8822_MCLKSEL_SFT));
684 		snd_soc_component_update_bits(component,
685 			NAU8822_REG_CLOCKING, NAU8822_CLKM_MASK,
686 			NAU8822_CLKM_MCLK);
687 		break;
688 
689 	case NAU8822_CLK_PLL:
690 		/* master clock from PLL and enable PLL */
691 		if (pll->mclk_scaler != div) {
692 			dev_err(component->dev,
693 			"master clock prescaler not meet PLL parameters\n");
694 			return -EINVAL;
695 		}
696 		snd_soc_component_update_bits(component,
697 			NAU8822_REG_CLOCKING, NAU8822_MCLKSEL_MASK,
698 			(div << NAU8822_MCLKSEL_SFT));
699 		snd_soc_component_update_bits(component,
700 			NAU8822_REG_CLOCKING, NAU8822_CLKM_MASK,
701 			NAU8822_CLKM_PLL);
702 		break;
703 
704 	default:
705 		return -EINVAL;
706 	}
707 
708 	return 0;
709 }
710 
nau8822_set_pll(struct snd_soc_dai * dai,int pll_id,int source,unsigned int freq_in,unsigned int freq_out)711 static int nau8822_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
712 				unsigned int freq_in, unsigned int freq_out)
713 {
714 	struct snd_soc_component *component = dai->component;
715 	struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component);
716 	struct nau8822_pll *pll_param = &nau8822->pll;
717 	int ret, fs;
718 
719 	if (freq_in == pll_param->freq_in &&
720 	    freq_out == pll_param->freq_out)
721 		return 0;
722 
723 	if (freq_out == 0) {
724 		dev_dbg(component->dev, "PLL disabled\n");
725 		snd_soc_component_update_bits(component,
726 			NAU8822_REG_POWER_MANAGEMENT_1, NAU8822_PLL_EN_MASK, NAU8822_PLL_OFF);
727 		return 0;
728 	}
729 
730 	fs = freq_out / 256;
731 
732 	ret = nau8822_calc_pll(freq_in, fs, pll_param);
733 	if (ret < 0) {
734 		dev_err(component->dev, "Unsupported input clock %d\n",
735 			freq_in);
736 		return ret;
737 	}
738 
739 	dev_dbg(component->dev,
740 		"pll_int=%x pll_frac=%x mclk_scaler=%x pre_factor=%x\n",
741 		pll_param->pll_int, pll_param->pll_frac,
742 		pll_param->mclk_scaler, pll_param->pre_factor);
743 
744 	snd_soc_component_update_bits(component,
745 		NAU8822_REG_POWER_MANAGEMENT_1, NAU8822_PLL_EN_MASK, NAU8822_PLL_OFF);
746 	snd_soc_component_update_bits(component,
747 		NAU8822_REG_PLL_N, NAU8822_PLLMCLK_DIV2 | NAU8822_PLLN_MASK,
748 		(pll_param->pre_factor ? NAU8822_PLLMCLK_DIV2 : 0) |
749 		pll_param->pll_int);
750 	snd_soc_component_write(component,
751 		NAU8822_REG_PLL_K1, (pll_param->pll_frac >> NAU8822_PLLK1_SFT) &
752 		NAU8822_PLLK1_MASK);
753 	snd_soc_component_write(component,
754 		NAU8822_REG_PLL_K2, (pll_param->pll_frac >> NAU8822_PLLK2_SFT) &
755 		NAU8822_PLLK2_MASK);
756 	snd_soc_component_write(component,
757 		NAU8822_REG_PLL_K3, pll_param->pll_frac & NAU8822_PLLK3_MASK);
758 	snd_soc_component_update_bits(component,
759 		NAU8822_REG_CLOCKING, NAU8822_MCLKSEL_MASK,
760 		pll_param->mclk_scaler << NAU8822_MCLKSEL_SFT);
761 	snd_soc_component_update_bits(component,
762 		NAU8822_REG_CLOCKING, NAU8822_CLKM_MASK, NAU8822_CLKM_PLL);
763 	snd_soc_component_update_bits(component,
764 		NAU8822_REG_POWER_MANAGEMENT_1, NAU8822_PLL_EN_MASK, NAU8822_PLL_ON);
765 
766 	pll_param->freq_in = freq_in;
767 	pll_param->freq_out = freq_out;
768 
769 	return 0;
770 }
771 
nau8822_set_dai_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)772 static int nau8822_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
773 				 unsigned int freq, int dir)
774 {
775 	struct snd_soc_component *component = dai->component;
776 	struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component);
777 	unsigned long mclk_freq;
778 
779 	nau8822->div_id = clk_id;
780 	nau8822->sysclk = freq;
781 
782 	if (nau8822->mclk) {
783 		mclk_freq = clk_get_rate(nau8822->mclk);
784 		if (mclk_freq != freq) {
785 			int ret = nau8822_set_pll(dai, NAU8822_CLK_MCLK,
786 				NAU8822_CLK_MCLK, mclk_freq, freq);
787 			if (ret) {
788 				dev_err(component->dev, "Failed to set PLL\n");
789 				return ret;
790 			}
791 			nau8822->div_id = NAU8822_CLK_PLL;
792 		}
793 	}
794 
795 	dev_dbg(component->dev, "master sysclk %dHz, source %s\n", freq,
796 		nau8822->div_id == NAU8822_CLK_PLL ? "PLL" : "MCLK");
797 
798 	return 0;
799 }
800 
nau8822_set_dai_fmt(struct snd_soc_dai * dai,unsigned int fmt)801 static int nau8822_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
802 {
803 	struct snd_soc_component *component = dai->component;
804 	u16 ctrl1_val = 0, ctrl2_val = 0;
805 
806 	dev_dbg(component->dev, "%s\n", __func__);
807 
808 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
809 	case SND_SOC_DAIFMT_CBM_CFM:
810 		ctrl2_val |= 1;
811 		break;
812 	case SND_SOC_DAIFMT_CBS_CFS:
813 		ctrl2_val &= ~1;
814 		break;
815 	default:
816 		return -EINVAL;
817 	}
818 
819 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
820 	case SND_SOC_DAIFMT_I2S:
821 		ctrl1_val |= 0x10;
822 		break;
823 	case SND_SOC_DAIFMT_RIGHT_J:
824 		break;
825 	case SND_SOC_DAIFMT_LEFT_J:
826 		ctrl1_val |= 0x8;
827 		break;
828 	case SND_SOC_DAIFMT_DSP_A:
829 		ctrl1_val |= 0x18;
830 		break;
831 	default:
832 		return -EINVAL;
833 	}
834 
835 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
836 	case SND_SOC_DAIFMT_NB_NF:
837 		break;
838 	case SND_SOC_DAIFMT_IB_IF:
839 		ctrl1_val |= 0x180;
840 		break;
841 	case SND_SOC_DAIFMT_IB_NF:
842 		ctrl1_val |= 0x100;
843 		break;
844 	case SND_SOC_DAIFMT_NB_IF:
845 		ctrl1_val |= 0x80;
846 		break;
847 	default:
848 		return -EINVAL;
849 	}
850 
851 	snd_soc_component_update_bits(component,
852 		NAU8822_REG_AUDIO_INTERFACE,
853 		NAU8822_AIFMT_MASK | NAU8822_LRP_MASK | NAU8822_BCLKP_MASK,
854 		ctrl1_val);
855 	snd_soc_component_update_bits(component,
856 		NAU8822_REG_CLOCKING, NAU8822_CLKIOEN_MASK, ctrl2_val);
857 
858 	return 0;
859 }
860 
nau8822_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)861 static int nau8822_hw_params(struct snd_pcm_substream *substream,
862 			    struct snd_pcm_hw_params *params,
863 			    struct snd_soc_dai *dai)
864 {
865 	struct snd_soc_component *component = dai->component;
866 	struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component);
867 	int div = 0, val_len = 0, val_rate = 0;
868 	unsigned int ctrl_val, bclk_fs, bclk_div;
869 
870 	/* make BCLK and LRC divide configuration if the codec as master. */
871 	ctrl_val = snd_soc_component_read(component, NAU8822_REG_CLOCKING);
872 	if (ctrl_val & NAU8822_CLK_MASTER) {
873 		/* get the bclk and fs ratio */
874 		bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params);
875 		if (bclk_fs <= 32)
876 			bclk_div = NAU8822_BCLKDIV_8;
877 		else if (bclk_fs <= 64)
878 			bclk_div = NAU8822_BCLKDIV_4;
879 		else if (bclk_fs <= 128)
880 			bclk_div = NAU8822_BCLKDIV_2;
881 		else
882 			return -EINVAL;
883 		snd_soc_component_update_bits(component, NAU8822_REG_CLOCKING,
884 				NAU8822_BCLKSEL_MASK, bclk_div);
885 	}
886 
887 	switch (params_format(params)) {
888 	case SNDRV_PCM_FORMAT_S16_LE:
889 		break;
890 	case SNDRV_PCM_FORMAT_S20_3LE:
891 		val_len |= NAU8822_WLEN_20;
892 		break;
893 	case SNDRV_PCM_FORMAT_S24_LE:
894 		val_len |= NAU8822_WLEN_24;
895 		break;
896 	case SNDRV_PCM_FORMAT_S32_LE:
897 		val_len |= NAU8822_WLEN_32;
898 		break;
899 	default:
900 		return -EINVAL;
901 	}
902 
903 	switch (params_rate(params)) {
904 	case 8000:
905 		val_rate |= NAU8822_SMPLR_8K;
906 		break;
907 	case 11025:
908 		val_rate |= NAU8822_SMPLR_12K;
909 		break;
910 	case 16000:
911 		val_rate |= NAU8822_SMPLR_16K;
912 		break;
913 	case 22050:
914 		val_rate |= NAU8822_SMPLR_24K;
915 		break;
916 	case 32000:
917 		val_rate |= NAU8822_SMPLR_32K;
918 		break;
919 	case 44100:
920 	case 48000:
921 		break;
922 	default:
923 		return -EINVAL;
924 	}
925 
926 	snd_soc_component_update_bits(component,
927 		NAU8822_REG_AUDIO_INTERFACE, NAU8822_WLEN_MASK, val_len);
928 	snd_soc_component_update_bits(component,
929 		NAU8822_REG_ADDITIONAL_CONTROL, NAU8822_SMPLR_MASK, val_rate);
930 
931 	/* If the master clock is from MCLK, provide the runtime FS for driver
932 	 * to get the master clock prescaler configuration.
933 	 */
934 	if (nau8822->div_id != NAU8822_CLK_MCLK)
935 		div = nau8822->pll.mclk_scaler;
936 
937 	nau8822_config_clkdiv(dai, div, params_rate(params));
938 
939 	return 0;
940 }
941 
nau8822_mute(struct snd_soc_dai * dai,int mute,int direction)942 static int nau8822_mute(struct snd_soc_dai *dai, int mute, int direction)
943 {
944 	struct snd_soc_component *component = dai->component;
945 
946 	dev_dbg(component->dev, "%s: %d\n", __func__, mute);
947 
948 	if (mute)
949 		snd_soc_component_update_bits(component,
950 			NAU8822_REG_DAC_CONTROL, 0x40, 0x40);
951 	else
952 		snd_soc_component_update_bits(component,
953 			NAU8822_REG_DAC_CONTROL, 0x40, 0);
954 
955 	return 0;
956 }
957 
nau8822_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)958 static int nau8822_set_bias_level(struct snd_soc_component *component,
959 				 enum snd_soc_bias_level level)
960 {
961 	struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component);
962 
963 	switch (level) {
964 	case SND_SOC_BIAS_ON:
965 		break;
966 
967 	case SND_SOC_BIAS_PREPARE:
968 		if (nau8822->mclk &&
969 			snd_soc_component_get_bias_level(component) != SND_SOC_BIAS_ON) {
970 			int ret = clk_prepare_enable(nau8822->mclk);
971 
972 			if (ret) {
973 				dev_err(component->dev,
974 					"Failed to enable MCLK: %d\n", ret);
975 				return ret;
976 			}
977 		}
978 
979 		snd_soc_component_update_bits(component,
980 			NAU8822_REG_POWER_MANAGEMENT_1,
981 			NAU8822_REFIMP_MASK, NAU8822_REFIMP_80K);
982 		break;
983 
984 	case SND_SOC_BIAS_STANDBY:
985 		if (nau8822->mclk &&
986 			snd_soc_component_get_bias_level(component) != SND_SOC_BIAS_OFF)
987 			clk_disable_unprepare(nau8822->mclk);
988 
989 		snd_soc_component_update_bits(component,
990 			NAU8822_REG_POWER_MANAGEMENT_1,
991 			NAU8822_IOBUF_EN | NAU8822_ABIAS_EN,
992 			NAU8822_IOBUF_EN | NAU8822_ABIAS_EN);
993 
994 		if (snd_soc_component_get_bias_level(component) ==
995 			SND_SOC_BIAS_OFF) {
996 			snd_soc_component_update_bits(component,
997 				NAU8822_REG_POWER_MANAGEMENT_1,
998 				NAU8822_REFIMP_MASK, NAU8822_REFIMP_3K);
999 			mdelay(100);
1000 		}
1001 		snd_soc_component_update_bits(component,
1002 			NAU8822_REG_POWER_MANAGEMENT_1,
1003 			NAU8822_REFIMP_MASK, NAU8822_REFIMP_300K);
1004 		break;
1005 
1006 	case SND_SOC_BIAS_OFF:
1007 		snd_soc_component_write(component,
1008 			NAU8822_REG_POWER_MANAGEMENT_1, 0);
1009 		snd_soc_component_write(component,
1010 			NAU8822_REG_POWER_MANAGEMENT_2, 0);
1011 		snd_soc_component_write(component,
1012 			NAU8822_REG_POWER_MANAGEMENT_3, 0);
1013 		break;
1014 	}
1015 
1016 	dev_dbg(component->dev, "%s: %d\n", __func__, level);
1017 
1018 	return 0;
1019 }
1020 
1021 #define NAU8822_RATES (SNDRV_PCM_RATE_8000_48000)
1022 
1023 #define NAU8822_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1024 	SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1025 
1026 static const struct snd_soc_dai_ops nau8822_dai_ops = {
1027 	.hw_params	= nau8822_hw_params,
1028 	.mute_stream	= nau8822_mute,
1029 	.set_fmt	= nau8822_set_dai_fmt,
1030 	.set_sysclk	= nau8822_set_dai_sysclk,
1031 	.set_pll	= nau8822_set_pll,
1032 	.no_capture_mute = 1,
1033 };
1034 
1035 static struct snd_soc_dai_driver nau8822_dai = {
1036 	.name = "nau8822-hifi",
1037 	.playback = {
1038 		.stream_name = "Playback",
1039 		.channels_min = 1,
1040 		.channels_max = 2,
1041 		.rates = NAU8822_RATES,
1042 		.formats = NAU8822_FORMATS,
1043 	},
1044 	.capture = {
1045 		.stream_name = "Capture",
1046 		.channels_min = 1,
1047 		.channels_max = 2,
1048 		.rates = NAU8822_RATES,
1049 		.formats = NAU8822_FORMATS,
1050 	},
1051 	.ops = &nau8822_dai_ops,
1052 	.symmetric_rate = 1,
1053 };
1054 
nau8822_suspend(struct snd_soc_component * component)1055 static int nau8822_suspend(struct snd_soc_component *component)
1056 {
1057 	struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component);
1058 
1059 	snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
1060 
1061 	regcache_mark_dirty(nau8822->regmap);
1062 
1063 	return 0;
1064 }
1065 
nau8822_resume(struct snd_soc_component * component)1066 static int nau8822_resume(struct snd_soc_component *component)
1067 {
1068 	struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component);
1069 
1070 	regcache_sync(nau8822->regmap);
1071 
1072 	snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
1073 
1074 	return 0;
1075 }
1076 
1077 /*
1078  * These registers contain an "update" bit - bit 8. This means, for example,
1079  * that one can write new DAC digital volume for both channels, but only when
1080  * the update bit is set, will also the volume be updated - simultaneously for
1081  * both channels.
1082  */
1083 static const int update_reg[] = {
1084 	NAU8822_REG_LEFT_DAC_DIGITAL_VOLUME,
1085 	NAU8822_REG_RIGHT_DAC_DIGITAL_VOLUME,
1086 	NAU8822_REG_LEFT_ADC_DIGITAL_VOLUME,
1087 	NAU8822_REG_RIGHT_ADC_DIGITAL_VOLUME,
1088 	NAU8822_REG_LEFT_INP_PGA_CONTROL,
1089 	NAU8822_REG_RIGHT_INP_PGA_CONTROL,
1090 	NAU8822_REG_LHP_VOLUME,
1091 	NAU8822_REG_RHP_VOLUME,
1092 	NAU8822_REG_LSPKOUT_VOLUME,
1093 	NAU8822_REG_RSPKOUT_VOLUME,
1094 };
1095 
nau8822_probe(struct snd_soc_component * component)1096 static int nau8822_probe(struct snd_soc_component *component)
1097 {
1098 	int i;
1099 	struct device_node *of_node = component->dev->of_node;
1100 
1101 	/*
1102 	 * Set the update bit in all registers, that have one. This way all
1103 	 * writes to those registers will also cause the update bit to be
1104 	 * written.
1105 	 */
1106 	for (i = 0; i < ARRAY_SIZE(update_reg); i++)
1107 		snd_soc_component_update_bits(component,
1108 			update_reg[i], 0x100, 0x100);
1109 
1110 	/* Check property to configure the two loudspeaker outputs as
1111 	 * a single Bridge Tied Load output
1112 	 */
1113 	if (of_property_read_bool(of_node, "nuvoton,spk-btl"))
1114 		snd_soc_component_update_bits(component,
1115 					      NAU8822_REG_RIGHT_SPEAKER_CONTROL,
1116 					      NAU8822_RSUBBYP, NAU8822_RSUBBYP);
1117 
1118 	return 0;
1119 }
1120 
1121 static const struct snd_soc_component_driver soc_component_dev_nau8822 = {
1122 	.probe				= nau8822_probe,
1123 	.suspend			= nau8822_suspend,
1124 	.resume				= nau8822_resume,
1125 	.set_bias_level			= nau8822_set_bias_level,
1126 	.controls			= nau8822_snd_controls,
1127 	.num_controls			= ARRAY_SIZE(nau8822_snd_controls),
1128 	.dapm_widgets			= nau8822_dapm_widgets,
1129 	.num_dapm_widgets		= ARRAY_SIZE(nau8822_dapm_widgets),
1130 	.dapm_routes			= nau8822_dapm_routes,
1131 	.num_dapm_routes		= ARRAY_SIZE(nau8822_dapm_routes),
1132 	.idle_bias_on			= 1,
1133 	.use_pmdown_time		= 1,
1134 	.endianness			= 1,
1135 };
1136 
1137 static const struct regmap_config nau8822_regmap_config = {
1138 	.reg_bits = 7,
1139 	.val_bits = 9,
1140 
1141 	.max_register = NAU8822_REG_MAX_REGISTER,
1142 	.volatile_reg = nau8822_volatile,
1143 
1144 	.readable_reg = nau8822_readable_reg,
1145 	.writeable_reg = nau8822_writeable_reg,
1146 
1147 	.cache_type = REGCACHE_RBTREE,
1148 	.reg_defaults = nau8822_reg_defaults,
1149 	.num_reg_defaults = ARRAY_SIZE(nau8822_reg_defaults),
1150 };
1151 
nau8822_i2c_probe(struct i2c_client * i2c)1152 static int nau8822_i2c_probe(struct i2c_client *i2c)
1153 {
1154 	struct device *dev = &i2c->dev;
1155 	struct nau8822 *nau8822 = dev_get_platdata(dev);
1156 	int ret;
1157 
1158 	if (!nau8822) {
1159 		nau8822 = devm_kzalloc(dev, sizeof(*nau8822), GFP_KERNEL);
1160 		if (nau8822 == NULL)
1161 			return -ENOMEM;
1162 	}
1163 	i2c_set_clientdata(i2c, nau8822);
1164 
1165 	nau8822->mclk = devm_clk_get_optional(&i2c->dev, "mclk");
1166 	if (IS_ERR(nau8822->mclk))
1167 		return dev_err_probe(&i2c->dev, PTR_ERR(nau8822->mclk),
1168 			"Error getting mclk\n");
1169 
1170 	nau8822->regmap = devm_regmap_init_i2c(i2c, &nau8822_regmap_config);
1171 	if (IS_ERR(nau8822->regmap)) {
1172 		ret = PTR_ERR(nau8822->regmap);
1173 		dev_err(&i2c->dev, "Failed to allocate regmap: %d\n", ret);
1174 		return ret;
1175 	}
1176 	nau8822->dev = dev;
1177 
1178 	/* Reset the codec */
1179 	ret = regmap_write(nau8822->regmap, NAU8822_REG_RESET, 0x00);
1180 	if (ret != 0) {
1181 		dev_err(&i2c->dev, "Failed to issue reset: %d\n", ret);
1182 		return ret;
1183 	}
1184 
1185 	ret = devm_snd_soc_register_component(dev, &soc_component_dev_nau8822,
1186 						&nau8822_dai, 1);
1187 	if (ret != 0) {
1188 		dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
1189 		return ret;
1190 	}
1191 
1192 	return 0;
1193 }
1194 
1195 static const struct i2c_device_id nau8822_i2c_id[] = {
1196 	{ "nau8822" },
1197 	{ }
1198 };
1199 MODULE_DEVICE_TABLE(i2c, nau8822_i2c_id);
1200 
1201 #ifdef CONFIG_OF
1202 static const struct of_device_id nau8822_of_match[] = {
1203 	{ .compatible = "nuvoton,nau8822", },
1204 	{ }
1205 };
1206 MODULE_DEVICE_TABLE(of, nau8822_of_match);
1207 #endif
1208 
1209 static struct i2c_driver nau8822_i2c_driver = {
1210 	.driver = {
1211 		.name = "nau8822",
1212 		.of_match_table = of_match_ptr(nau8822_of_match),
1213 	},
1214 	.probe = nau8822_i2c_probe,
1215 	.id_table = nau8822_i2c_id,
1216 };
1217 module_i2c_driver(nau8822_i2c_driver);
1218 
1219 MODULE_DESCRIPTION("ASoC NAU8822 codec driver");
1220 MODULE_AUTHOR("David Lin <ctlin0@nuvoton.com>");
1221 MODULE_LICENSE("GPL v2");
1222