xref: /openbmc/linux/sound/soc/codecs/ssm2602.c (revision 726ccdba)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 //
3 // File:         sound/soc/codecs/ssm2602.c
4 // Author:       Cliff Cai <Cliff.Cai@analog.com>
5 //
6 // Created:      Tue June 06 2008
7 // Description:  Driver for ssm2602 sound chip
8 //
9 // Modified:
10 //               Copyright 2008 Analog Devices Inc.
11 //
12 // Bugs:         Enter bugs at http://blackfin.uclinux.org/
13 
14 #include <linux/delay.h>
15 #include <linux/module.h>
16 #include <linux/regmap.h>
17 #include <linux/slab.h>
18 
19 #include <sound/pcm.h>
20 #include <sound/pcm_params.h>
21 #include <sound/soc.h>
22 #include <sound/tlv.h>
23 
24 #include "ssm2602.h"
25 
26 /* codec private data */
27 struct ssm2602_priv {
28 	unsigned int sysclk;
29 	const struct snd_pcm_hw_constraint_list *sysclk_constraints;
30 
31 	struct regmap *regmap;
32 
33 	enum ssm2602_type type;
34 	unsigned int clk_out_pwr;
35 };
36 
37 /*
38  * ssm2602 register cache
39  * We can't read the ssm2602 register space when we are
40  * using 2 wire for device control, so we cache them instead.
41  * There is no point in caching the reset register
42  */
43 static const struct reg_default ssm2602_reg[SSM2602_CACHEREGNUM] = {
44 	{ .reg = 0x00, .def = 0x0097 },
45 	{ .reg = 0x01, .def = 0x0097 },
46 	{ .reg = 0x02, .def = 0x0079 },
47 	{ .reg = 0x03, .def = 0x0079 },
48 	{ .reg = 0x04, .def = 0x000a },
49 	{ .reg = 0x05, .def = 0x0008 },
50 	{ .reg = 0x06, .def = 0x009f },
51 	{ .reg = 0x07, .def = 0x000a },
52 	{ .reg = 0x08, .def = 0x0000 },
53 	{ .reg = 0x09, .def = 0x0000 }
54 };
55 
56 /*
57  * ssm2602 register patch
58  * Workaround for playback distortions after power up: activates digital
59  * core, and then powers on output, DAC, and whole chip at the same time
60  */
61 
62 static const struct reg_sequence ssm2602_patch[] = {
63 	{ SSM2602_ACTIVE, 0x01 },
64 	{ SSM2602_PWR,    0x07 },
65 	{ SSM2602_RESET,  0x00 },
66 };
67 
68 
69 /*Appending several "None"s just for OSS mixer use*/
70 static const char *ssm2602_input_select[] = {
71 	"Line", "Mic",
72 };
73 
74 static const char *ssm2602_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
75 
76 static const struct soc_enum ssm2602_enum[] = {
77 	SOC_ENUM_SINGLE(SSM2602_APANA, 2, ARRAY_SIZE(ssm2602_input_select),
78 			ssm2602_input_select),
79 	SOC_ENUM_SINGLE(SSM2602_APDIGI, 1, ARRAY_SIZE(ssm2602_deemph),
80 			ssm2602_deemph),
81 };
82 
83 static const DECLARE_TLV_DB_RANGE(ssm260x_outmix_tlv,
84 	0, 47, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 0),
85 	48, 127, TLV_DB_SCALE_ITEM(-7400, 100, 0)
86 );
87 
88 static const DECLARE_TLV_DB_SCALE(ssm260x_inpga_tlv, -3450, 150, 0);
89 static const DECLARE_TLV_DB_SCALE(ssm260x_sidetone_tlv, -1500, 300, 0);
90 
91 static const struct snd_kcontrol_new ssm260x_snd_controls[] = {
92 SOC_DOUBLE_R_TLV("Capture Volume", SSM2602_LINVOL, SSM2602_RINVOL, 0, 45, 0,
93 	ssm260x_inpga_tlv),
94 SOC_DOUBLE_R("Capture Switch", SSM2602_LINVOL, SSM2602_RINVOL, 7, 1, 1),
95 
96 SOC_SINGLE("ADC High Pass Filter Switch", SSM2602_APDIGI, 0, 1, 1),
97 SOC_SINGLE("Store DC Offset Switch", SSM2602_APDIGI, 4, 1, 0),
98 
99 SOC_ENUM("Playback De-emphasis", ssm2602_enum[1]),
100 };
101 
102 static const struct snd_kcontrol_new ssm2602_snd_controls[] = {
103 SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2602_LOUT1V, SSM2602_ROUT1V,
104 	0, 127, 0, ssm260x_outmix_tlv),
105 SOC_DOUBLE_R("Master Playback ZC Switch", SSM2602_LOUT1V, SSM2602_ROUT1V,
106 	7, 1, 0),
107 SOC_SINGLE_TLV("Sidetone Playback Volume", SSM2602_APANA, 6, 3, 1,
108 	ssm260x_sidetone_tlv),
109 
110 SOC_SINGLE("Mic Boost (+20dB)", SSM2602_APANA, 0, 1, 0),
111 SOC_SINGLE("Mic Boost2 (+20dB)", SSM2602_APANA, 8, 1, 0),
112 };
113 
114 /* Output Mixer */
115 static const struct snd_kcontrol_new ssm260x_output_mixer_controls[] = {
116 SOC_DAPM_SINGLE("Line Bypass Switch", SSM2602_APANA, 3, 1, 0),
117 SOC_DAPM_SINGLE("HiFi Playback Switch", SSM2602_APANA, 4, 1, 0),
118 SOC_DAPM_SINGLE("Mic Sidetone Switch", SSM2602_APANA, 5, 1, 0),
119 };
120 
121 static const struct snd_kcontrol_new mic_ctl =
122 	SOC_DAPM_SINGLE("Switch", SSM2602_APANA, 1, 1, 1);
123 
124 /* Input mux */
125 static const struct snd_kcontrol_new ssm2602_input_mux_controls =
126 SOC_DAPM_ENUM("Input Select", ssm2602_enum[0]);
127 
128 static int ssm2602_mic_switch_event(struct snd_soc_dapm_widget *w,
129 				struct snd_kcontrol *kcontrol, int event)
130 {
131 	/*
132 	 * According to the ssm2603 data sheet (control register sequencing),
133 	 * the digital core should be activated only after all necessary bits
134 	 * in the power register are enabled, and a delay determined by the
135 	 * decoupling capacitor on the VMID pin has passed. If the digital core
136 	 * is activated too early, or even before the ADC is powered up, audible
137 	 * artifacts appear at the beginning and end of the recorded signal.
138 	 *
139 	 * In practice, audible artifacts disappear well over 500 ms.
140 	 */
141 	msleep(500);
142 
143 	return 0;
144 }
145 
146 static const struct snd_soc_dapm_widget ssm260x_dapm_widgets[] = {
147 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM2602_PWR, 3, 1),
148 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", SSM2602_PWR, 2, 1),
149 SND_SOC_DAPM_PGA("Line Input", SSM2602_PWR, 0, 1, NULL, 0),
150 
151 SND_SOC_DAPM_SUPPLY("Digital Core Power", SSM2602_ACTIVE, 0, 0, NULL, 0),
152 
153 SND_SOC_DAPM_OUTPUT("LOUT"),
154 SND_SOC_DAPM_OUTPUT("ROUT"),
155 SND_SOC_DAPM_INPUT("RLINEIN"),
156 SND_SOC_DAPM_INPUT("LLINEIN"),
157 };
158 
159 static const struct snd_soc_dapm_widget ssm2602_dapm_widgets[] = {
160 SND_SOC_DAPM_MIXER("Output Mixer", SSM2602_PWR, 4, 1,
161 	ssm260x_output_mixer_controls,
162 	ARRAY_SIZE(ssm260x_output_mixer_controls)),
163 
164 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &ssm2602_input_mux_controls),
165 SND_SOC_DAPM_MICBIAS("Mic Bias", SSM2602_PWR, 1, 1),
166 
167 SND_SOC_DAPM_SWITCH_E("Mic Switch", SSM2602_APANA, 1, 1, &mic_ctl,
168 		ssm2602_mic_switch_event, SND_SOC_DAPM_PRE_PMU),
169 
170 SND_SOC_DAPM_OUTPUT("LHPOUT"),
171 SND_SOC_DAPM_OUTPUT("RHPOUT"),
172 SND_SOC_DAPM_INPUT("MICIN"),
173 };
174 
175 static const struct snd_soc_dapm_widget ssm2604_dapm_widgets[] = {
176 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
177 	ssm260x_output_mixer_controls,
178 	ARRAY_SIZE(ssm260x_output_mixer_controls) - 1), /* Last element is the mic */
179 };
180 
181 static const struct snd_soc_dapm_route ssm260x_routes[] = {
182 	{"DAC", NULL, "Digital Core Power"},
183 	{"ADC", NULL, "Digital Core Power"},
184 
185 	{"Output Mixer", "Line Bypass Switch", "Line Input"},
186 	{"Output Mixer", "HiFi Playback Switch", "DAC"},
187 
188 	{"ROUT", NULL, "Output Mixer"},
189 	{"LOUT", NULL, "Output Mixer"},
190 
191 	{"Line Input", NULL, "LLINEIN"},
192 	{"Line Input", NULL, "RLINEIN"},
193 };
194 
195 static const struct snd_soc_dapm_route ssm2602_routes[] = {
196 	{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
197 
198 	{"RHPOUT", NULL, "Output Mixer"},
199 	{"LHPOUT", NULL, "Output Mixer"},
200 
201 	{"Input Mux", "Line", "Line Input"},
202 	{"Input Mux", "Mic", "Mic Switch"},
203 	{"ADC", NULL, "Input Mux"},
204 
205 	{"Mic Switch", NULL, "Mic Bias"},
206 
207 	{"Mic Bias", NULL, "MICIN"},
208 };
209 
210 static const struct snd_soc_dapm_route ssm2604_routes[] = {
211 	{"ADC", NULL, "Line Input"},
212 };
213 
214 static const unsigned int ssm2602_rates_12288000[] = {
215 	8000, 16000, 32000, 48000, 96000,
216 };
217 
218 static const struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
219 	.list = ssm2602_rates_12288000,
220 	.count = ARRAY_SIZE(ssm2602_rates_12288000),
221 };
222 
223 static const unsigned int ssm2602_rates_11289600[] = {
224 	8000, 11025, 22050, 44100, 88200,
225 };
226 
227 static const struct snd_pcm_hw_constraint_list ssm2602_constraints_11289600 = {
228 	.list = ssm2602_rates_11289600,
229 	.count = ARRAY_SIZE(ssm2602_rates_11289600),
230 };
231 
232 struct ssm2602_coeff {
233 	u32 mclk;
234 	u32 rate;
235 	u8 srate;
236 };
237 
238 #define SSM2602_COEFF_SRATE(sr, bosr, usb) (((sr) << 2) | ((bosr) << 1) | (usb))
239 
240 /* codec mclk clock coefficients */
241 static const struct ssm2602_coeff ssm2602_coeff_table[] = {
242 	/* 48k */
243 	{12288000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x0)},
244 	{18432000, 48000, SSM2602_COEFF_SRATE(0x0, 0x1, 0x0)},
245 	{12000000, 48000, SSM2602_COEFF_SRATE(0x0, 0x0, 0x1)},
246 
247 	/* 32k */
248 	{12288000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x0)},
249 	{18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
250 	{12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
251 
252 	/* 16k */
253 	{12288000, 16000, SSM2602_COEFF_SRATE(0x5, 0x0, 0x0)},
254 	{18432000, 16000, SSM2602_COEFF_SRATE(0x5, 0x1, 0x0)},
255 	{12000000, 16000, SSM2602_COEFF_SRATE(0xa, 0x0, 0x1)},
256 
257 	/* 8k */
258 	{12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
259 	{18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
260 	{11289600, 8000, SSM2602_COEFF_SRATE(0xb, 0x0, 0x0)},
261 	{16934400, 8000, SSM2602_COEFF_SRATE(0xb, 0x1, 0x0)},
262 	{12000000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x1)},
263 
264 	/* 96k */
265 	{12288000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x0)},
266 	{18432000, 96000, SSM2602_COEFF_SRATE(0x7, 0x1, 0x0)},
267 	{12000000, 96000, SSM2602_COEFF_SRATE(0x7, 0x0, 0x1)},
268 
269 	/* 11.025k */
270 	{11289600, 11025, SSM2602_COEFF_SRATE(0xc, 0x0, 0x0)},
271 	{16934400, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x0)},
272 	{12000000, 11025, SSM2602_COEFF_SRATE(0xc, 0x1, 0x1)},
273 
274 	/* 22.05k */
275 	{11289600, 22050, SSM2602_COEFF_SRATE(0xd, 0x0, 0x0)},
276 	{16934400, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x0)},
277 	{12000000, 22050, SSM2602_COEFF_SRATE(0xd, 0x1, 0x1)},
278 
279 	/* 44.1k */
280 	{11289600, 44100, SSM2602_COEFF_SRATE(0x8, 0x0, 0x0)},
281 	{16934400, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x0)},
282 	{12000000, 44100, SSM2602_COEFF_SRATE(0x8, 0x1, 0x1)},
283 
284 	/* 88.2k */
285 	{11289600, 88200, SSM2602_COEFF_SRATE(0xf, 0x0, 0x0)},
286 	{16934400, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x0)},
287 	{12000000, 88200, SSM2602_COEFF_SRATE(0xf, 0x1, 0x1)},
288 };
289 
290 static inline int ssm2602_get_coeff(int mclk, int rate)
291 {
292 	int i;
293 
294 	for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) {
295 		if (ssm2602_coeff_table[i].rate == rate) {
296 			if (ssm2602_coeff_table[i].mclk == mclk)
297 				return ssm2602_coeff_table[i].srate;
298 			if (ssm2602_coeff_table[i].mclk == mclk / 2)
299 				return ssm2602_coeff_table[i].srate | SRATE_CORECLK_DIV2;
300 		}
301 	}
302 	return -EINVAL;
303 }
304 
305 static int ssm2602_hw_params(struct snd_pcm_substream *substream,
306 	struct snd_pcm_hw_params *params,
307 	struct snd_soc_dai *dai)
308 {
309 	struct snd_soc_component *component = dai->component;
310 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(component);
311 	int srate = ssm2602_get_coeff(ssm2602->sysclk, params_rate(params));
312 	unsigned int iface;
313 
314 	if (srate < 0)
315 		return srate;
316 
317 	regmap_write(ssm2602->regmap, SSM2602_SRATE, srate);
318 
319 	/* bit size */
320 	switch (params_width(params)) {
321 	case 16:
322 		iface = 0x0;
323 		break;
324 	case 20:
325 		iface = 0x4;
326 		break;
327 	case 24:
328 		iface = 0x8;
329 		break;
330 	case 32:
331 		iface = 0xc;
332 		break;
333 	default:
334 		return -EINVAL;
335 	}
336 	regmap_update_bits(ssm2602->regmap, SSM2602_IFACE,
337 		IFACE_AUDIO_DATA_LEN, iface);
338 	return 0;
339 }
340 
341 static int ssm2602_startup(struct snd_pcm_substream *substream,
342 			   struct snd_soc_dai *dai)
343 {
344 	struct snd_soc_component *component = dai->component;
345 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(component);
346 
347 	if (ssm2602->sysclk_constraints) {
348 		snd_pcm_hw_constraint_list(substream->runtime, 0,
349 				   SNDRV_PCM_HW_PARAM_RATE,
350 				   ssm2602->sysclk_constraints);
351 	}
352 
353 	return 0;
354 }
355 
356 static int ssm2602_mute(struct snd_soc_dai *dai, int mute, int direction)
357 {
358 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(dai->component);
359 
360 	if (mute)
361 		regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
362 				    APDIGI_ENABLE_DAC_MUTE,
363 				    APDIGI_ENABLE_DAC_MUTE);
364 	else
365 		regmap_update_bits(ssm2602->regmap, SSM2602_APDIGI,
366 				    APDIGI_ENABLE_DAC_MUTE, 0);
367 	return 0;
368 }
369 
370 static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai,
371 		int clk_id, unsigned int freq, int dir)
372 {
373 	struct snd_soc_component *component = codec_dai->component;
374 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(component);
375 
376 	if (dir == SND_SOC_CLOCK_IN) {
377 		if (clk_id != SSM2602_SYSCLK)
378 			return -EINVAL;
379 
380 		switch (freq) {
381 		case 12288000:
382 		case 18432000:
383 		case 24576000:
384 		case 36864000:
385 			ssm2602->sysclk_constraints = &ssm2602_constraints_12288000;
386 			break;
387 		case 11289600:
388 		case 16934400:
389 		case 22579200:
390 		case 33868800:
391 			ssm2602->sysclk_constraints = &ssm2602_constraints_11289600;
392 			break;
393 		case 12000000:
394 		case 24000000:
395 			ssm2602->sysclk_constraints = NULL;
396 			break;
397 		default:
398 			return -EINVAL;
399 		}
400 
401 		ssm2602->sysclk = freq;
402 	} else {
403 		unsigned int mask;
404 
405 		switch (clk_id) {
406 		case SSM2602_CLK_CLKOUT:
407 			mask = PWR_CLK_OUT_PDN;
408 			break;
409 		case SSM2602_CLK_XTO:
410 			mask = PWR_OSC_PDN;
411 			break;
412 		default:
413 			return -EINVAL;
414 		}
415 
416 		if (freq == 0)
417 			ssm2602->clk_out_pwr |= mask;
418 		else
419 			ssm2602->clk_out_pwr &= ~mask;
420 
421 		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
422 			PWR_CLK_OUT_PDN | PWR_OSC_PDN, ssm2602->clk_out_pwr);
423 	}
424 
425 	return 0;
426 }
427 
428 static int ssm2602_set_dai_fmt(struct snd_soc_dai *codec_dai,
429 		unsigned int fmt)
430 {
431 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(codec_dai->component);
432 	unsigned int iface = 0;
433 
434 	/* set master/slave audio interface */
435 	switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
436 	case SND_SOC_DAIFMT_CBP_CFP:
437 		iface |= 0x0040;
438 		break;
439 	case SND_SOC_DAIFMT_CBC_CFC:
440 		break;
441 	default:
442 		return -EINVAL;
443 	}
444 
445 	/* interface format */
446 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
447 	case SND_SOC_DAIFMT_I2S:
448 		iface |= 0x0002;
449 		break;
450 	case SND_SOC_DAIFMT_RIGHT_J:
451 		break;
452 	case SND_SOC_DAIFMT_LEFT_J:
453 		iface |= 0x0001;
454 		break;
455 	case SND_SOC_DAIFMT_DSP_A:
456 		iface |= 0x0013;
457 		break;
458 	case SND_SOC_DAIFMT_DSP_B:
459 		iface |= 0x0003;
460 		break;
461 	default:
462 		return -EINVAL;
463 	}
464 
465 	/* clock inversion */
466 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
467 	case SND_SOC_DAIFMT_NB_NF:
468 		break;
469 	case SND_SOC_DAIFMT_IB_IF:
470 		iface |= 0x0090;
471 		break;
472 	case SND_SOC_DAIFMT_IB_NF:
473 		iface |= 0x0080;
474 		break;
475 	case SND_SOC_DAIFMT_NB_IF:
476 		iface |= 0x0010;
477 		break;
478 	default:
479 		return -EINVAL;
480 	}
481 
482 	/* set iface */
483 	regmap_write(ssm2602->regmap, SSM2602_IFACE, iface);
484 	return 0;
485 }
486 
487 static int ssm2602_set_bias_level(struct snd_soc_component *component,
488 				 enum snd_soc_bias_level level)
489 {
490 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(component);
491 
492 	switch (level) {
493 	case SND_SOC_BIAS_ON:
494 		/* vref/mid on, osc and clkout on if enabled */
495 		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
496 			PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
497 			ssm2602->clk_out_pwr);
498 		break;
499 	case SND_SOC_BIAS_PREPARE:
500 		break;
501 	case SND_SOC_BIAS_STANDBY:
502 		/* everything off except vref/vmid, */
503 		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
504 			PWR_POWER_OFF | PWR_CLK_OUT_PDN | PWR_OSC_PDN,
505 			PWR_CLK_OUT_PDN | PWR_OSC_PDN);
506 		break;
507 	case SND_SOC_BIAS_OFF:
508 		/* everything off */
509 		regmap_update_bits(ssm2602->regmap, SSM2602_PWR,
510 			PWR_POWER_OFF, PWR_POWER_OFF);
511 		break;
512 
513 	}
514 	return 0;
515 }
516 
517 #define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
518 		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
519 		SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
520 		SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
521 		SNDRV_PCM_RATE_96000)
522 
523 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
524 		SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
525 
526 static const struct snd_soc_dai_ops ssm2602_dai_ops = {
527 	.startup	= ssm2602_startup,
528 	.hw_params	= ssm2602_hw_params,
529 	.mute_stream	= ssm2602_mute,
530 	.set_sysclk	= ssm2602_set_dai_sysclk,
531 	.set_fmt	= ssm2602_set_dai_fmt,
532 	.no_capture_mute = 1,
533 };
534 
535 static struct snd_soc_dai_driver ssm2602_dai = {
536 	.name = "ssm2602-hifi",
537 	.playback = {
538 		.stream_name = "Playback",
539 		.channels_min = 2,
540 		.channels_max = 2,
541 		.rates = SSM2602_RATES,
542 		.formats = SSM2602_FORMATS,},
543 	.capture = {
544 		.stream_name = "Capture",
545 		.channels_min = 2,
546 		.channels_max = 2,
547 		.rates = SSM2602_RATES,
548 		.formats = SSM2602_FORMATS,},
549 	.ops = &ssm2602_dai_ops,
550 	.symmetric_rate = 1,
551 	.symmetric_sample_bits = 1,
552 };
553 
554 static int ssm2602_resume(struct snd_soc_component *component)
555 {
556 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(component);
557 
558 	regcache_sync(ssm2602->regmap);
559 
560 	return 0;
561 }
562 
563 static int ssm2602_component_probe(struct snd_soc_component *component)
564 {
565 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
566 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(component);
567 	int ret;
568 
569 	regmap_update_bits(ssm2602->regmap, SSM2602_LOUT1V,
570 			    LOUT1V_LRHP_BOTH, LOUT1V_LRHP_BOTH);
571 	regmap_update_bits(ssm2602->regmap, SSM2602_ROUT1V,
572 			    ROUT1V_RLHP_BOTH, ROUT1V_RLHP_BOTH);
573 
574 	ret = snd_soc_add_component_controls(component, ssm2602_snd_controls,
575 			ARRAY_SIZE(ssm2602_snd_controls));
576 	if (ret)
577 		return ret;
578 
579 	ret = snd_soc_dapm_new_controls(dapm, ssm2602_dapm_widgets,
580 			ARRAY_SIZE(ssm2602_dapm_widgets));
581 	if (ret)
582 		return ret;
583 
584 	return snd_soc_dapm_add_routes(dapm, ssm2602_routes,
585 			ARRAY_SIZE(ssm2602_routes));
586 }
587 
588 static int ssm2604_component_probe(struct snd_soc_component *component)
589 {
590 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
591 	int ret;
592 
593 	ret = snd_soc_dapm_new_controls(dapm, ssm2604_dapm_widgets,
594 			ARRAY_SIZE(ssm2604_dapm_widgets));
595 	if (ret)
596 		return ret;
597 
598 	return snd_soc_dapm_add_routes(dapm, ssm2604_routes,
599 			ARRAY_SIZE(ssm2604_routes));
600 }
601 
602 static int ssm260x_component_probe(struct snd_soc_component *component)
603 {
604 	struct ssm2602_priv *ssm2602 = snd_soc_component_get_drvdata(component);
605 	int ret;
606 
607 	ret = regmap_write(ssm2602->regmap, SSM2602_RESET, 0);
608 	if (ret < 0) {
609 		dev_err(component->dev, "Failed to issue reset: %d\n", ret);
610 		return ret;
611 	}
612 
613 	regmap_register_patch(ssm2602->regmap, ssm2602_patch,
614 			      ARRAY_SIZE(ssm2602_patch));
615 
616 	/* set the update bits */
617 	regmap_update_bits(ssm2602->regmap, SSM2602_LINVOL,
618 			    LINVOL_LRIN_BOTH, LINVOL_LRIN_BOTH);
619 	regmap_update_bits(ssm2602->regmap, SSM2602_RINVOL,
620 			    RINVOL_RLIN_BOTH, RINVOL_RLIN_BOTH);
621 	/*select Line in as default input*/
622 	regmap_write(ssm2602->regmap, SSM2602_APANA, APANA_SELECT_DAC |
623 			APANA_ENABLE_MIC_BOOST);
624 
625 	switch (ssm2602->type) {
626 	case SSM2602:
627 		ret = ssm2602_component_probe(component);
628 		break;
629 	case SSM2604:
630 		ret = ssm2604_component_probe(component);
631 		break;
632 	}
633 
634 	return ret;
635 }
636 
637 static const struct snd_soc_component_driver soc_component_dev_ssm2602 = {
638 	.probe			= ssm260x_component_probe,
639 	.resume			= ssm2602_resume,
640 	.set_bias_level		= ssm2602_set_bias_level,
641 	.controls		= ssm260x_snd_controls,
642 	.num_controls		= ARRAY_SIZE(ssm260x_snd_controls),
643 	.dapm_widgets		= ssm260x_dapm_widgets,
644 	.num_dapm_widgets	= ARRAY_SIZE(ssm260x_dapm_widgets),
645 	.dapm_routes		= ssm260x_routes,
646 	.num_dapm_routes	= ARRAY_SIZE(ssm260x_routes),
647 	.suspend_bias_off	= 1,
648 	.idle_bias_on		= 1,
649 	.use_pmdown_time	= 1,
650 	.endianness		= 1,
651 };
652 
653 static bool ssm2602_register_volatile(struct device *dev, unsigned int reg)
654 {
655 	return reg == SSM2602_RESET;
656 }
657 
658 const struct regmap_config ssm2602_regmap_config = {
659 	.val_bits = 9,
660 	.reg_bits = 7,
661 
662 	.max_register = SSM2602_RESET,
663 	.volatile_reg = ssm2602_register_volatile,
664 
665 	.cache_type = REGCACHE_RBTREE,
666 	.reg_defaults = ssm2602_reg,
667 	.num_reg_defaults = ARRAY_SIZE(ssm2602_reg),
668 };
669 EXPORT_SYMBOL_GPL(ssm2602_regmap_config);
670 
671 int ssm2602_probe(struct device *dev, enum ssm2602_type type,
672 	struct regmap *regmap)
673 {
674 	struct ssm2602_priv *ssm2602;
675 
676 	if (IS_ERR(regmap))
677 		return PTR_ERR(regmap);
678 
679 	ssm2602 = devm_kzalloc(dev, sizeof(*ssm2602), GFP_KERNEL);
680 	if (ssm2602 == NULL)
681 		return -ENOMEM;
682 
683 	dev_set_drvdata(dev, ssm2602);
684 	ssm2602->type = type;
685 	ssm2602->regmap = regmap;
686 
687 	return devm_snd_soc_register_component(dev, &soc_component_dev_ssm2602,
688 		&ssm2602_dai, 1);
689 }
690 EXPORT_SYMBOL_GPL(ssm2602_probe);
691 
692 MODULE_DESCRIPTION("ASoC SSM2602/SSM2603/SSM2604 driver");
693 MODULE_AUTHOR("Cliff Cai");
694 MODULE_LICENSE("GPL");
695