1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * AD193X Audio Codec driver supporting AD1936/7/8/9
4  *
5  * Copyright 2010 Analog Devices Inc.
6  */
7 
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/device.h>
11 #include <linux/regmap.h>
12 #include <linux/slab.h>
13 #include <sound/core.h>
14 #include <sound/pcm.h>
15 #include <sound/pcm_params.h>
16 #include <sound/initval.h>
17 #include <sound/soc.h>
18 #include <sound/tlv.h>
19 
20 #include "ad193x.h"
21 
22 /* codec private data */
23 struct ad193x_priv {
24 	struct regmap *regmap;
25 	enum ad193x_type type;
26 	int sysclk;
27 };
28 
29 /*
30  * AD193X volume/mute/de-emphasis etc. controls
31  */
32 static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
33 
34 static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
35 			    ad193x_deemp);
36 
37 static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
38 
39 static const unsigned int ad193x_sb[] = {32};
40 
41 static struct snd_pcm_hw_constraint_list constr = {
42 	.list = ad193x_sb,
43 	.count = ARRAY_SIZE(ad193x_sb),
44 };
45 
46 static const struct snd_kcontrol_new ad193x_snd_controls[] = {
47 	/* DAC volume control */
48 	SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
49 			AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
50 	SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
51 			AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
52 	SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
53 			AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
54 	SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
55 			AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
56 
57 	/* DAC switch control */
58 	SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
59 		AD193X_DACR1_MUTE, 1, 1),
60 	SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
61 		AD193X_DACR2_MUTE, 1, 1),
62 	SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
63 		AD193X_DACR3_MUTE, 1, 1),
64 	SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
65 		AD193X_DACR4_MUTE, 1, 1),
66 
67 	/* DAC de-emphasis */
68 	SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
69 };
70 
71 static const struct snd_kcontrol_new ad193x_adc_snd_controls[] = {
72 	/* ADC switch control */
73 	SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
74 		AD193X_ADCR1_MUTE, 1, 1),
75 	SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
76 		AD193X_ADCR2_MUTE, 1, 1),
77 
78 	/* ADC high-pass filter */
79 	SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
80 			AD193X_ADC_HIGHPASS_FILTER, 1, 0),
81 };
82 
83 static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
84 	SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
85 	SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
86 	SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
87 	SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
88 	SND_SOC_DAPM_VMID("VMID"),
89 	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
90 	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
91 	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
92 	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
93 };
94 
95 static const struct snd_soc_dapm_widget ad193x_adc_widgets[] = {
96 	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
97 	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
98 	SND_SOC_DAPM_INPUT("ADC1IN"),
99 	SND_SOC_DAPM_INPUT("ADC2IN"),
100 };
101 
ad193x_check_pll(struct snd_soc_dapm_widget * source,struct snd_soc_dapm_widget * sink)102 static int ad193x_check_pll(struct snd_soc_dapm_widget *source,
103 			    struct snd_soc_dapm_widget *sink)
104 {
105 	struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
106 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
107 
108 	return !!ad193x->sysclk;
109 }
110 
111 static const struct snd_soc_dapm_route audio_paths[] = {
112 	{ "DAC", NULL, "SYSCLK" },
113 	{ "DAC Output", NULL, "DAC" },
114 	{ "DAC Output", NULL, "VMID" },
115 	{ "DAC1OUT", NULL, "DAC Output" },
116 	{ "DAC2OUT", NULL, "DAC Output" },
117 	{ "DAC3OUT", NULL, "DAC Output" },
118 	{ "DAC4OUT", NULL, "DAC Output" },
119 	{ "SYSCLK", NULL, "PLL_PWR", &ad193x_check_pll },
120 };
121 
122 static const struct snd_soc_dapm_route ad193x_adc_audio_paths[] = {
123 	{ "ADC", NULL, "SYSCLK" },
124 	{ "ADC", NULL, "ADC_PWR" },
125 	{ "ADC", NULL, "ADC1IN" },
126 	{ "ADC", NULL, "ADC2IN" },
127 };
128 
ad193x_has_adc(const struct ad193x_priv * ad193x)129 static inline bool ad193x_has_adc(const struct ad193x_priv *ad193x)
130 {
131 	switch (ad193x->type) {
132 	case AD1933:
133 	case AD1934:
134 		return false;
135 	default:
136 		break;
137 	}
138 
139 	return true;
140 }
141 
142 /*
143  * DAI ops entries
144  */
145 
ad193x_mute(struct snd_soc_dai * dai,int mute,int direction)146 static int ad193x_mute(struct snd_soc_dai *dai, int mute, int direction)
147 {
148 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
149 
150 	if (mute)
151 		regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
152 				    AD193X_DAC_MASTER_MUTE,
153 				    AD193X_DAC_MASTER_MUTE);
154 	else
155 		regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
156 				    AD193X_DAC_MASTER_MUTE, 0);
157 
158 	return 0;
159 }
160 
ad193x_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int width)161 static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
162 			       unsigned int rx_mask, int slots, int width)
163 {
164 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(dai->component);
165 	unsigned int channels;
166 
167 	switch (slots) {
168 	case 2:
169 		channels = AD193X_2_CHANNELS;
170 		break;
171 	case 4:
172 		channels = AD193X_4_CHANNELS;
173 		break;
174 	case 8:
175 		channels = AD193X_8_CHANNELS;
176 		break;
177 	case 16:
178 		channels = AD193X_16_CHANNELS;
179 		break;
180 	default:
181 		return -EINVAL;
182 	}
183 
184 	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
185 		AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
186 	if (ad193x_has_adc(ad193x))
187 		regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
188 				   AD193X_ADC_CHAN_MASK,
189 				   channels << AD193X_ADC_CHAN_SHFT);
190 
191 	return 0;
192 }
193 
ad193x_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)194 static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
195 		unsigned int fmt)
196 {
197 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(codec_dai->component);
198 	unsigned int adc_serfmt = 0;
199 	unsigned int dac_serfmt = 0;
200 	unsigned int adc_fmt = 0;
201 	unsigned int dac_fmt = 0;
202 
203 	/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
204 	 * with TDM), ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) and DAC I2S mode
205 	 * (SND_SOC_DAIFMT_I2S)
206 	 */
207 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
208 	case SND_SOC_DAIFMT_I2S:
209 		adc_serfmt |= AD193X_ADC_SERFMT_TDM;
210 		dac_serfmt |= AD193X_DAC_SERFMT_STEREO;
211 		break;
212 	case SND_SOC_DAIFMT_DSP_A:
213 		adc_serfmt |= AD193X_ADC_SERFMT_AUX;
214 		dac_serfmt |= AD193X_DAC_SERFMT_TDM;
215 		break;
216 	default:
217 		if (ad193x_has_adc(ad193x))
218 			return -EINVAL;
219 	}
220 
221 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
222 	case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
223 		break;
224 	case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
225 		adc_fmt |= AD193X_ADC_LEFT_HIGH;
226 		dac_fmt |= AD193X_DAC_LEFT_HIGH;
227 		break;
228 	case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
229 		adc_fmt |= AD193X_ADC_BCLK_INV;
230 		dac_fmt |= AD193X_DAC_BCLK_INV;
231 		break;
232 	case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
233 		adc_fmt |= AD193X_ADC_LEFT_HIGH;
234 		adc_fmt |= AD193X_ADC_BCLK_INV;
235 		dac_fmt |= AD193X_DAC_LEFT_HIGH;
236 		dac_fmt |= AD193X_DAC_BCLK_INV;
237 		break;
238 	default:
239 		return -EINVAL;
240 	}
241 
242 	/* For DSP_*, LRCLK's polarity must be inverted */
243 	if (fmt & SND_SOC_DAIFMT_DSP_A)
244 		dac_fmt ^= AD193X_DAC_LEFT_HIGH;
245 
246 	switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
247 	case SND_SOC_DAIFMT_CBP_CFP:
248 		adc_fmt |= AD193X_ADC_LCR_MASTER;
249 		adc_fmt |= AD193X_ADC_BCLK_MASTER;
250 		dac_fmt |= AD193X_DAC_LCR_MASTER;
251 		dac_fmt |= AD193X_DAC_BCLK_MASTER;
252 		break;
253 	case SND_SOC_DAIFMT_CBC_CFP:
254 		adc_fmt |= AD193X_ADC_LCR_MASTER;
255 		dac_fmt |= AD193X_DAC_LCR_MASTER;
256 		break;
257 	case SND_SOC_DAIFMT_CBP_CFC:
258 		adc_fmt |= AD193X_ADC_BCLK_MASTER;
259 		dac_fmt |= AD193X_DAC_BCLK_MASTER;
260 		break;
261 	case SND_SOC_DAIFMT_CBC_CFC:
262 		break;
263 	default:
264 		return -EINVAL;
265 	}
266 
267 	if (ad193x_has_adc(ad193x)) {
268 		regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
269 				   AD193X_ADC_SERFMT_MASK, adc_serfmt);
270 		regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
271 				   AD193X_ADC_FMT_MASK, adc_fmt);
272 	}
273 	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0,
274 			   AD193X_DAC_SERFMT_MASK, dac_serfmt);
275 	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
276 		AD193X_DAC_FMT_MASK, dac_fmt);
277 
278 	return 0;
279 }
280 
ad193x_set_dai_sysclk(struct snd_soc_dai * codec_dai,int clk_id,unsigned int freq,int dir)281 static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
282 		int clk_id, unsigned int freq, int dir)
283 {
284 	struct snd_soc_component *component = codec_dai->component;
285 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
286 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
287 
288 	if (clk_id == AD193X_SYSCLK_MCLK) {
289 		/* MCLK must be 512 x fs */
290 		if (dir == SND_SOC_CLOCK_OUT || freq != 24576000)
291 			return -EINVAL;
292 
293 		regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL1,
294 				   AD193X_PLL_SRC_MASK,
295 				   AD193X_PLL_DAC_SRC_MCLK |
296 				   AD193X_PLL_CLK_SRC_MCLK);
297 
298 		snd_soc_dapm_sync(dapm);
299 		return 0;
300 	}
301 	switch (freq) {
302 	case 12288000:
303 	case 18432000:
304 	case 24576000:
305 	case 36864000:
306 		ad193x->sysclk = freq;
307 		return 0;
308 	}
309 	return -EINVAL;
310 }
311 
ad193x_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)312 static int ad193x_hw_params(struct snd_pcm_substream *substream,
313 		struct snd_pcm_hw_params *params,
314 		struct snd_soc_dai *dai)
315 {
316 	int word_len = 0, master_rate = 0;
317 	struct snd_soc_component *component = dai->component;
318 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
319 	bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
320 	u8 dacc0;
321 
322 	dev_dbg(dai->dev, "%s() rate=%u format=%#x width=%u channels=%u\n",
323 		__func__, params_rate(params), params_format(params),
324 		params_width(params), params_channels(params));
325 
326 
327 	/* bit size */
328 	switch (params_width(params)) {
329 	case 16:
330 		word_len = 3;
331 		break;
332 	case 20:
333 		word_len = 1;
334 		break;
335 	case 24:
336 	case 32:
337 		word_len = 0;
338 		break;
339 	}
340 
341 	switch (ad193x->sysclk) {
342 	case 12288000:
343 		master_rate = AD193X_PLL_INPUT_256;
344 		break;
345 	case 18432000:
346 		master_rate = AD193X_PLL_INPUT_384;
347 		break;
348 	case 24576000:
349 		master_rate = AD193X_PLL_INPUT_512;
350 		break;
351 	case 36864000:
352 		master_rate = AD193X_PLL_INPUT_768;
353 		break;
354 	}
355 
356 	if (is_playback) {
357 		switch (params_rate(params)) {
358 		case 48000:
359 			dacc0 = AD193X_DAC_SR_48;
360 			break;
361 		case 96000:
362 			dacc0 = AD193X_DAC_SR_96;
363 			break;
364 		case 192000:
365 			dacc0 = AD193X_DAC_SR_192;
366 			break;
367 		default:
368 			dev_err(dai->dev, "invalid sampling rate: %d\n", params_rate(params));
369 			return -EINVAL;
370 		}
371 
372 		regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL0, AD193X_DAC_SR_MASK, dacc0);
373 	}
374 
375 	regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
376 			    AD193X_PLL_INPUT_MASK, master_rate);
377 
378 	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
379 			    AD193X_DAC_WORD_LEN_MASK,
380 			    word_len << AD193X_DAC_WORD_LEN_SHFT);
381 
382 	if (ad193x_has_adc(ad193x))
383 		regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
384 				   AD193X_ADC_WORD_LEN_MASK, word_len);
385 
386 	return 0;
387 }
388 
ad193x_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)389 static int ad193x_startup(struct snd_pcm_substream *substream,
390 			  struct snd_soc_dai *dai)
391 {
392 	return snd_pcm_hw_constraint_list(substream->runtime, 0,
393 				   SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
394 				   &constr);
395 }
396 
397 static const struct snd_soc_dai_ops ad193x_dai_ops = {
398 	.startup = ad193x_startup,
399 	.hw_params = ad193x_hw_params,
400 	.mute_stream = ad193x_mute,
401 	.set_tdm_slot = ad193x_set_tdm_slot,
402 	.set_sysclk	= ad193x_set_dai_sysclk,
403 	.set_fmt = ad193x_set_dai_fmt,
404 	.no_capture_mute = 1,
405 };
406 
407 /* codec DAI instance */
408 static struct snd_soc_dai_driver ad193x_dai = {
409 	.name = "ad193x-hifi",
410 	.playback = {
411 		.stream_name = "Playback",
412 		.channels_min = 2,
413 		.channels_max = 8,
414 		.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
415 		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
416 			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
417 	},
418 	.capture = {
419 		.stream_name = "Capture",
420 		.channels_min = 2,
421 		.channels_max = 4,
422 		.rates = SNDRV_PCM_RATE_48000,
423 		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
424 			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
425 	},
426 	.ops = &ad193x_dai_ops,
427 };
428 
429 /* codec DAI instance for DAC only */
430 static struct snd_soc_dai_driver ad193x_no_adc_dai = {
431 	.name = "ad193x-hifi",
432 	.playback = {
433 		.stream_name = "Playback",
434 		.channels_min = 2,
435 		.channels_max = 8,
436 		.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
437 		.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
438 			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
439 	},
440 	.ops = &ad193x_dai_ops,
441 };
442 
443 /* codec register values to set after reset */
ad193x_reg_default_init(struct ad193x_priv * ad193x)444 static void ad193x_reg_default_init(struct ad193x_priv *ad193x)
445 {
446 	static const struct reg_sequence reg_init[] = {
447 		{  0, 0x99 },	/* PLL_CLK_CTRL0: pll input: mclki/xi 12.288Mhz */
448 		{  1, 0x04 },	/* PLL_CLK_CTRL1: no on-chip Vref */
449 		{  2, 0x40 },	/* DAC_CTRL0: TDM mode */
450 		{  3, 0x00 },	/* DAC_CTRL1: reset */
451 		{  4, 0x1A },	/* DAC_CTRL2: 48kHz de-emphasis, unmute dac */
452 		{  5, 0x00 },	/* DAC_CHNL_MUTE: unmute DAC channels */
453 		{  6, 0x00 },	/* DAC_L1_VOL: no attenuation */
454 		{  7, 0x00 },	/* DAC_R1_VOL: no attenuation */
455 		{  8, 0x00 },	/* DAC_L2_VOL: no attenuation */
456 		{  9, 0x00 },	/* DAC_R2_VOL: no attenuation */
457 		{ 10, 0x00 },	/* DAC_L3_VOL: no attenuation */
458 		{ 11, 0x00 },	/* DAC_R3_VOL: no attenuation */
459 		{ 12, 0x00 },	/* DAC_L4_VOL: no attenuation */
460 		{ 13, 0x00 },	/* DAC_R4_VOL: no attenuation */
461 	};
462 	static const struct reg_sequence reg_adc_init[] = {
463 		{ 14, 0x03 },	/* ADC_CTRL0: high-pass filter enable */
464 		{ 15, 0x43 },	/* ADC_CTRL1: sata delay=1, adc aux mode */
465 		{ 16, 0x00 },	/* ADC_CTRL2: reset */
466 	};
467 
468 	regmap_multi_reg_write(ad193x->regmap, reg_init, ARRAY_SIZE(reg_init));
469 
470 	if (ad193x_has_adc(ad193x)) {
471 		regmap_multi_reg_write(ad193x->regmap, reg_adc_init,
472 				       ARRAY_SIZE(reg_adc_init));
473 	}
474 }
475 
ad193x_component_probe(struct snd_soc_component * component)476 static int ad193x_component_probe(struct snd_soc_component *component)
477 {
478 	struct ad193x_priv *ad193x = snd_soc_component_get_drvdata(component);
479 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
480 	int num, ret;
481 
482 	/* default setting for ad193x */
483 	ad193x_reg_default_init(ad193x);
484 
485 	/* adc only */
486 	if (ad193x_has_adc(ad193x)) {
487 		/* add adc controls */
488 		num = ARRAY_SIZE(ad193x_adc_snd_controls);
489 		ret = snd_soc_add_component_controls(component,
490 						 ad193x_adc_snd_controls,
491 						 num);
492 		if (ret)
493 			return ret;
494 
495 		/* add adc widgets */
496 		num = ARRAY_SIZE(ad193x_adc_widgets);
497 		ret = snd_soc_dapm_new_controls(dapm,
498 						ad193x_adc_widgets,
499 						num);
500 		if (ret)
501 			return ret;
502 
503 		/* add adc routes */
504 		num = ARRAY_SIZE(ad193x_adc_audio_paths);
505 		ret = snd_soc_dapm_add_routes(dapm,
506 					      ad193x_adc_audio_paths,
507 					      num);
508 		if (ret)
509 			return ret;
510 	}
511 
512 	return 0;
513 }
514 
515 static const struct snd_soc_component_driver soc_component_dev_ad193x = {
516 	.probe			= ad193x_component_probe,
517 	.controls		= ad193x_snd_controls,
518 	.num_controls		= ARRAY_SIZE(ad193x_snd_controls),
519 	.dapm_widgets		= ad193x_dapm_widgets,
520 	.num_dapm_widgets	= ARRAY_SIZE(ad193x_dapm_widgets),
521 	.dapm_routes		= audio_paths,
522 	.num_dapm_routes	= ARRAY_SIZE(audio_paths),
523 	.idle_bias_on		= 1,
524 	.use_pmdown_time	= 1,
525 	.endianness		= 1,
526 	.non_legacy_dai_naming	= 1,
527 };
528 
529 const struct regmap_config ad193x_regmap_config = {
530 	.max_register = AD193X_NUM_REGS - 1,
531 };
532 EXPORT_SYMBOL_GPL(ad193x_regmap_config);
533 
ad193x_probe(struct device * dev,struct regmap * regmap,enum ad193x_type type)534 int ad193x_probe(struct device *dev, struct regmap *regmap,
535 		 enum ad193x_type type)
536 {
537 	struct ad193x_priv *ad193x;
538 
539 	if (IS_ERR(regmap))
540 		return PTR_ERR(regmap);
541 
542 	ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
543 	if (ad193x == NULL)
544 		return -ENOMEM;
545 
546 	ad193x->regmap = regmap;
547 	ad193x->type = type;
548 
549 	dev_set_drvdata(dev, ad193x);
550 
551 	if (ad193x_has_adc(ad193x))
552 		return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
553 						       &ad193x_dai, 1);
554 	return devm_snd_soc_register_component(dev, &soc_component_dev_ad193x,
555 		&ad193x_no_adc_dai, 1);
556 }
557 EXPORT_SYMBOL_GPL(ad193x_probe);
558 
559 MODULE_DESCRIPTION("ASoC ad193x driver");
560 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
561 MODULE_LICENSE("GPL");
562