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1/*
2 * Cirrus Logic CS42448/CS42888 Audio CODEC Digital Audio Interface (DAI) driver
3 *
4 * Copyright (C) 2014 Freescale Semiconductor, Inc.
5 *
6 * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
7 *
8 * This file is licensed under the terms of the GNU General Public License
9 * version 2. This program is licensed "as is" without any warranty of any
10 * kind, whether express or implied.
11 */
12
13#include <linux/clk.h>
14#include <linux/delay.h>
15#include <linux/module.h>
16#include <linux/gpio/consumer.h>
17#include <linux/pm_runtime.h>
18#include <linux/regulator/consumer.h>
19#include <sound/pcm_params.h>
20#include <sound/soc.h>
21#include <sound/tlv.h>
22
23#include "cs42xx8.h"
24
25#define CS42XX8_NUM_SUPPLIES 4
26static const char *const cs42xx8_supply_names[CS42XX8_NUM_SUPPLIES] = {
27 "VA",
28 "VD",
29 "VLS",
30 "VLC",
31};
32
33#define CS42XX8_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
34 SNDRV_PCM_FMTBIT_S20_3LE | \
35 SNDRV_PCM_FMTBIT_S24_LE | \
36 SNDRV_PCM_FMTBIT_S32_LE)
37
38/* codec private data */
39struct cs42xx8_priv {
40 struct regulator_bulk_data supplies[CS42XX8_NUM_SUPPLIES];
41 const struct cs42xx8_driver_data *drvdata;
42 struct regmap *regmap;
43 struct clk *clk;
44
45 bool slave_mode;
46 unsigned long sysclk;
47 u32 tx_channels;
48 struct gpio_desc *gpiod_reset;
49 u32 rate[2];
50};
51
52/* -127.5dB to 0dB with step of 0.5dB */
53static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
54/* -64dB to 24dB with step of 0.5dB */
55static const DECLARE_TLV_DB_SCALE(adc_tlv, -6400, 50, 0);
56
57static const char *const cs42xx8_adc_single[] = { "Differential", "Single-Ended" };
58static const char *const cs42xx8_szc[] = { "Immediate Change", "Zero Cross",
59 "Soft Ramp", "Soft Ramp on Zero Cross" };
60
61static const struct soc_enum adc1_single_enum =
62 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 4, 2, cs42xx8_adc_single);
63static const struct soc_enum adc2_single_enum =
64 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 3, 2, cs42xx8_adc_single);
65static const struct soc_enum adc3_single_enum =
66 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 2, 2, cs42xx8_adc_single);
67static const struct soc_enum dac_szc_enum =
68 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 5, 4, cs42xx8_szc);
69static const struct soc_enum adc_szc_enum =
70 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 0, 4, cs42xx8_szc);
71
72static const struct snd_kcontrol_new cs42xx8_snd_controls[] = {
73 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", CS42XX8_VOLAOUT1,
74 CS42XX8_VOLAOUT2, 0, 0xff, 1, dac_tlv),
75 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", CS42XX8_VOLAOUT3,
76 CS42XX8_VOLAOUT4, 0, 0xff, 1, dac_tlv),
77 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", CS42XX8_VOLAOUT5,
78 CS42XX8_VOLAOUT6, 0, 0xff, 1, dac_tlv),
79 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", CS42XX8_VOLAOUT7,
80 CS42XX8_VOLAOUT8, 0, 0xff, 1, dac_tlv),
81 SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", CS42XX8_VOLAIN1,
82 CS42XX8_VOLAIN2, 0, -0x80, 0x30, 7, 0, adc_tlv),
83 SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", CS42XX8_VOLAIN3,
84 CS42XX8_VOLAIN4, 0, -0x80, 0x30, 7, 0, adc_tlv),
85 SOC_DOUBLE("DAC1 Invert Switch", CS42XX8_DACINV, 0, 1, 1, 0),
86 SOC_DOUBLE("DAC2 Invert Switch", CS42XX8_DACINV, 2, 3, 1, 0),
87 SOC_DOUBLE("DAC3 Invert Switch", CS42XX8_DACINV, 4, 5, 1, 0),
88 SOC_DOUBLE("DAC4 Invert Switch", CS42XX8_DACINV, 6, 7, 1, 0),
89 SOC_DOUBLE("ADC1 Invert Switch", CS42XX8_ADCINV, 0, 1, 1, 0),
90 SOC_DOUBLE("ADC2 Invert Switch", CS42XX8_ADCINV, 2, 3, 1, 0),
91 SOC_SINGLE("ADC High-Pass Filter Switch", CS42XX8_ADCCTL, 7, 1, 1),
92 SOC_SINGLE("DAC De-emphasis Switch", CS42XX8_ADCCTL, 5, 1, 0),
93 SOC_ENUM("ADC1 Single Ended Mode Switch", adc1_single_enum),
94 SOC_ENUM("ADC2 Single Ended Mode Switch", adc2_single_enum),
95 SOC_SINGLE("DAC Single Volume Control Switch", CS42XX8_TXCTL, 7, 1, 0),
96 SOC_ENUM("DAC Soft Ramp & Zero Cross Control Switch", dac_szc_enum),
97 SOC_SINGLE("DAC Auto Mute Switch", CS42XX8_TXCTL, 4, 1, 0),
98 SOC_SINGLE("Mute ADC Serial Port Switch", CS42XX8_TXCTL, 3, 1, 0),
99 SOC_SINGLE("ADC Single Volume Control Switch", CS42XX8_TXCTL, 2, 1, 0),
100 SOC_ENUM("ADC Soft Ramp & Zero Cross Control Switch", adc_szc_enum),
101};
102
103static const struct snd_kcontrol_new cs42xx8_adc3_snd_controls[] = {
104 SOC_DOUBLE_R_S_TLV("ADC3 Capture Volume", CS42XX8_VOLAIN5,
105 CS42XX8_VOLAIN6, 0, -0x80, 0x30, 7, 0, adc_tlv),
106 SOC_DOUBLE("ADC3 Invert Switch", CS42XX8_ADCINV, 4, 5, 1, 0),
107 SOC_ENUM("ADC3 Single Ended Mode Switch", adc3_single_enum),
108};
109
110static const struct snd_soc_dapm_widget cs42xx8_dapm_widgets[] = {
111 SND_SOC_DAPM_DAC("DAC1", "Playback", CS42XX8_PWRCTL, 1, 1),
112 SND_SOC_DAPM_DAC("DAC2", "Playback", CS42XX8_PWRCTL, 2, 1),
113 SND_SOC_DAPM_DAC("DAC3", "Playback", CS42XX8_PWRCTL, 3, 1),
114 SND_SOC_DAPM_DAC("DAC4", "Playback", CS42XX8_PWRCTL, 4, 1),
115
116 SND_SOC_DAPM_OUTPUT("AOUT1L"),
117 SND_SOC_DAPM_OUTPUT("AOUT1R"),
118 SND_SOC_DAPM_OUTPUT("AOUT2L"),
119 SND_SOC_DAPM_OUTPUT("AOUT2R"),
120 SND_SOC_DAPM_OUTPUT("AOUT3L"),
121 SND_SOC_DAPM_OUTPUT("AOUT3R"),
122 SND_SOC_DAPM_OUTPUT("AOUT4L"),
123 SND_SOC_DAPM_OUTPUT("AOUT4R"),
124
125 SND_SOC_DAPM_ADC("ADC1", "Capture", CS42XX8_PWRCTL, 5, 1),
126 SND_SOC_DAPM_ADC("ADC2", "Capture", CS42XX8_PWRCTL, 6, 1),
127
128 SND_SOC_DAPM_INPUT("AIN1L"),
129 SND_SOC_DAPM_INPUT("AIN1R"),
130 SND_SOC_DAPM_INPUT("AIN2L"),
131 SND_SOC_DAPM_INPUT("AIN2R"),
132
133 SND_SOC_DAPM_SUPPLY("PWR", CS42XX8_PWRCTL, 0, 1, NULL, 0),
134};
135
136static const struct snd_soc_dapm_widget cs42xx8_adc3_dapm_widgets[] = {
137 SND_SOC_DAPM_ADC("ADC3", "Capture", CS42XX8_PWRCTL, 7, 1),
138
139 SND_SOC_DAPM_INPUT("AIN3L"),
140 SND_SOC_DAPM_INPUT("AIN3R"),
141};
142
143static const struct snd_soc_dapm_route cs42xx8_dapm_routes[] = {
144 /* Playback */
145 { "AOUT1L", NULL, "DAC1" },
146 { "AOUT1R", NULL, "DAC1" },
147 { "DAC1", NULL, "PWR" },
148
149 { "AOUT2L", NULL, "DAC2" },
150 { "AOUT2R", NULL, "DAC2" },
151 { "DAC2", NULL, "PWR" },
152
153 { "AOUT3L", NULL, "DAC3" },
154 { "AOUT3R", NULL, "DAC3" },
155 { "DAC3", NULL, "PWR" },
156
157 { "AOUT4L", NULL, "DAC4" },
158 { "AOUT4R", NULL, "DAC4" },
159 { "DAC4", NULL, "PWR" },
160
161 /* Capture */
162 { "ADC1", NULL, "AIN1L" },
163 { "ADC1", NULL, "AIN1R" },
164 { "ADC1", NULL, "PWR" },
165
166 { "ADC2", NULL, "AIN2L" },
167 { "ADC2", NULL, "AIN2R" },
168 { "ADC2", NULL, "PWR" },
169};
170
171static const struct snd_soc_dapm_route cs42xx8_adc3_dapm_routes[] = {
172 /* Capture */
173 { "ADC3", NULL, "AIN3L" },
174 { "ADC3", NULL, "AIN3R" },
175 { "ADC3", NULL, "PWR" },
176};
177
178struct cs42xx8_ratios {
179 unsigned int mfreq;
180 unsigned int min_mclk;
181 unsigned int max_mclk;
182 unsigned int ratio[3];
183};
184
185/*
186 * According to reference mannual, define the cs42xx8_ratio struct
187 * MFreq2 | MFreq1 | MFreq0 | Description | SSM | DSM | QSM |
188 * 0 | 0 | 0 |1.029MHz to 12.8MHz | 256 | 128 | 64 |
189 * 0 | 0 | 1 |1.536MHz to 19.2MHz | 384 | 192 | 96 |
190 * 0 | 1 | 0 |2.048MHz to 25.6MHz | 512 | 256 | 128 |
191 * 0 | 1 | 1 |3.072MHz to 38.4MHz | 768 | 384 | 192 |
192 * 1 | x | x |4.096MHz to 51.2MHz |1024 | 512 | 256 |
193 */
194static const struct cs42xx8_ratios cs42xx8_ratios[] = {
195 { 0, 1029000, 12800000, {256, 128, 64} },
196 { 2, 1536000, 19200000, {384, 192, 96} },
197 { 4, 2048000, 25600000, {512, 256, 128} },
198 { 6, 3072000, 38400000, {768, 384, 192} },
199 { 8, 4096000, 51200000, {1024, 512, 256} },
200};
201
202static int cs42xx8_set_dai_sysclk(struct snd_soc_dai *codec_dai,
203 int clk_id, unsigned int freq, int dir)
204{
205 struct snd_soc_component *component = codec_dai->component;
206 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
207
208 cs42xx8->sysclk = freq;
209
210 return 0;
211}
212
213static int cs42xx8_set_dai_fmt(struct snd_soc_dai *codec_dai,
214 unsigned int format)
215{
216 struct snd_soc_component *component = codec_dai->component;
217 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
218 u32 val;
219
220 /* Set DAI format */
221 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
222 case SND_SOC_DAIFMT_LEFT_J:
223 val = CS42XX8_INTF_DAC_DIF_LEFTJ | CS42XX8_INTF_ADC_DIF_LEFTJ;
224 break;
225 case SND_SOC_DAIFMT_I2S:
226 val = CS42XX8_INTF_DAC_DIF_I2S | CS42XX8_INTF_ADC_DIF_I2S;
227 break;
228 case SND_SOC_DAIFMT_RIGHT_J:
229 val = CS42XX8_INTF_DAC_DIF_RIGHTJ | CS42XX8_INTF_ADC_DIF_RIGHTJ;
230 break;
231 case SND_SOC_DAIFMT_DSP_A:
232 val = CS42XX8_INTF_DAC_DIF_TDM | CS42XX8_INTF_ADC_DIF_TDM;
233 break;
234 default:
235 dev_err(component->dev, "unsupported dai format\n");
236 return -EINVAL;
237 }
238
239 regmap_update_bits(cs42xx8->regmap, CS42XX8_INTF,
240 CS42XX8_INTF_DAC_DIF_MASK |
241 CS42XX8_INTF_ADC_DIF_MASK, val);
242
243 /* Set master/slave audio interface */
244 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
245 case SND_SOC_DAIFMT_CBS_CFS:
246 cs42xx8->slave_mode = true;
247 break;
248 case SND_SOC_DAIFMT_CBM_CFM:
249 cs42xx8->slave_mode = false;
250 break;
251 default:
252 dev_err(component->dev, "unsupported master/slave mode\n");
253 return -EINVAL;
254 }
255
256 return 0;
257}
258
259static int cs42xx8_hw_params(struct snd_pcm_substream *substream,
260 struct snd_pcm_hw_params *params,
261 struct snd_soc_dai *dai)
262{
263 struct snd_soc_component *component = dai->component;
264 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
265 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
266 u32 ratio[2];
267 u32 rate[2];
268 u32 fm[2];
269 u32 i, val, mask;
270 bool condition1, condition2;
271
272 if (tx)
273 cs42xx8->tx_channels = params_channels(params);
274
275 rate[tx] = params_rate(params);
276 rate[!tx] = cs42xx8->rate[!tx];
277
278 ratio[tx] = rate[tx] > 0 ? cs42xx8->sysclk / rate[tx] : 0;
279 ratio[!tx] = rate[!tx] > 0 ? cs42xx8->sysclk / rate[!tx] : 0;
280
281 /* Get functional mode for tx and rx according to rate */
282 for (i = 0; i < 2; i++) {
283 if (cs42xx8->slave_mode) {
284 fm[i] = CS42XX8_FM_AUTO;
285 } else {
286 if (rate[i] < 50000) {
287 fm[i] = CS42XX8_FM_SINGLE;
288 } else if (rate[i] > 50000 && rate[i] < 100000) {
289 fm[i] = CS42XX8_FM_DOUBLE;
290 } else if (rate[i] > 100000 && rate[i] < 200000) {
291 fm[i] = CS42XX8_FM_QUAD;
292 } else {
293 dev_err(component->dev,
294 "unsupported sample rate\n");
295 return -EINVAL;
296 }
297 }
298 }
299
300 for (i = 0; i < ARRAY_SIZE(cs42xx8_ratios); i++) {
301 /* Is the ratio[tx] valid ? */
302 condition1 = ((fm[tx] == CS42XX8_FM_AUTO) ?
303 (cs42xx8_ratios[i].ratio[0] == ratio[tx] ||
304 cs42xx8_ratios[i].ratio[1] == ratio[tx] ||
305 cs42xx8_ratios[i].ratio[2] == ratio[tx]) :
306 (cs42xx8_ratios[i].ratio[fm[tx]] == ratio[tx])) &&
307 cs42xx8->sysclk >= cs42xx8_ratios[i].min_mclk &&
308 cs42xx8->sysclk <= cs42xx8_ratios[i].max_mclk;
309
310 if (!ratio[tx])
311 condition1 = true;
312
313 /* Is the ratio[!tx] valid ? */
314 condition2 = ((fm[!tx] == CS42XX8_FM_AUTO) ?
315 (cs42xx8_ratios[i].ratio[0] == ratio[!tx] ||
316 cs42xx8_ratios[i].ratio[1] == ratio[!tx] ||
317 cs42xx8_ratios[i].ratio[2] == ratio[!tx]) :
318 (cs42xx8_ratios[i].ratio[fm[!tx]] == ratio[!tx]));
319
320 if (!ratio[!tx])
321 condition2 = true;
322
323 /*
324 * Both ratio[tx] and ratio[!tx] is valid, then we get
325 * a proper MFreq.
326 */
327 if (condition1 && condition2)
328 break;
329 }
330
331 if (i == ARRAY_SIZE(cs42xx8_ratios)) {
332 dev_err(component->dev, "unsupported sysclk ratio\n");
333 return -EINVAL;
334 }
335
336 cs42xx8->rate[tx] = params_rate(params);
337
338 mask = CS42XX8_FUNCMOD_MFREQ_MASK;
339 val = cs42xx8_ratios[i].mfreq;
340
341 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD,
342 CS42XX8_FUNCMOD_xC_FM_MASK(tx) | mask,
343 CS42XX8_FUNCMOD_xC_FM(tx, fm[tx]) | val);
344
345 return 0;
346}
347
348static int cs42xx8_hw_free(struct snd_pcm_substream *substream,
349 struct snd_soc_dai *dai)
350{
351 struct snd_soc_component *component = dai->component;
352 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
353 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
354
355 /* Clear stored rate */
356 cs42xx8->rate[tx] = 0;
357
358 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD,
359 CS42XX8_FUNCMOD_xC_FM_MASK(tx),
360 CS42XX8_FUNCMOD_xC_FM(tx, CS42XX8_FM_AUTO));
361 return 0;
362}
363
364static int cs42xx8_mute(struct snd_soc_dai *dai, int mute, int direction)
365{
366 struct snd_soc_component *component = dai->component;
367 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
368 u8 dac_unmute = cs42xx8->tx_channels ?
369 ~((0x1 << cs42xx8->tx_channels) - 1) : 0;
370
371 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE,
372 mute ? CS42XX8_DACMUTE_ALL : dac_unmute);
373
374 return 0;
375}
376
377static const struct snd_soc_dai_ops cs42xx8_dai_ops = {
378 .set_fmt = cs42xx8_set_dai_fmt,
379 .set_sysclk = cs42xx8_set_dai_sysclk,
380 .hw_params = cs42xx8_hw_params,
381 .hw_free = cs42xx8_hw_free,
382 .mute_stream = cs42xx8_mute,
383 .no_capture_mute = 1,
384};
385
386static struct snd_soc_dai_driver cs42xx8_dai = {
387 .playback = {
388 .stream_name = "Playback",
389 .channels_min = 1,
390 .channels_max = 8,
391 .rates = SNDRV_PCM_RATE_8000_192000,
392 .formats = CS42XX8_FORMATS,
393 },
394 .capture = {
395 .stream_name = "Capture",
396 .channels_min = 1,
397 .rates = SNDRV_PCM_RATE_8000_192000,
398 .formats = CS42XX8_FORMATS,
399 },
400 .ops = &cs42xx8_dai_ops,
401};
402
403static const struct reg_default cs42xx8_reg[] = {
404 { 0x02, 0x00 }, /* Power Control */
405 { 0x03, 0xF0 }, /* Functional Mode */
406 { 0x04, 0x46 }, /* Interface Formats */
407 { 0x05, 0x00 }, /* ADC Control & DAC De-Emphasis */
408 { 0x06, 0x10 }, /* Transition Control */
409 { 0x07, 0x00 }, /* DAC Channel Mute */
410 { 0x08, 0x00 }, /* Volume Control AOUT1 */
411 { 0x09, 0x00 }, /* Volume Control AOUT2 */
412 { 0x0a, 0x00 }, /* Volume Control AOUT3 */
413 { 0x0b, 0x00 }, /* Volume Control AOUT4 */
414 { 0x0c, 0x00 }, /* Volume Control AOUT5 */
415 { 0x0d, 0x00 }, /* Volume Control AOUT6 */
416 { 0x0e, 0x00 }, /* Volume Control AOUT7 */
417 { 0x0f, 0x00 }, /* Volume Control AOUT8 */
418 { 0x10, 0x00 }, /* DAC Channel Invert */
419 { 0x11, 0x00 }, /* Volume Control AIN1 */
420 { 0x12, 0x00 }, /* Volume Control AIN2 */
421 { 0x13, 0x00 }, /* Volume Control AIN3 */
422 { 0x14, 0x00 }, /* Volume Control AIN4 */
423 { 0x15, 0x00 }, /* Volume Control AIN5 */
424 { 0x16, 0x00 }, /* Volume Control AIN6 */
425 { 0x17, 0x00 }, /* ADC Channel Invert */
426 { 0x18, 0x00 }, /* Status Control */
427 { 0x1a, 0x00 }, /* Status Mask */
428 { 0x1b, 0x00 }, /* MUTEC Pin Control */
429};
430
431static bool cs42xx8_volatile_register(struct device *dev, unsigned int reg)
432{
433 switch (reg) {
434 case CS42XX8_STATUS:
435 return true;
436 default:
437 return false;
438 }
439}
440
441static bool cs42xx8_writeable_register(struct device *dev, unsigned int reg)
442{
443 switch (reg) {
444 case CS42XX8_CHIPID:
445 case CS42XX8_STATUS:
446 return false;
447 default:
448 return true;
449 }
450}
451
452const struct regmap_config cs42xx8_regmap_config = {
453 .reg_bits = 8,
454 .val_bits = 8,
455
456 .max_register = CS42XX8_LASTREG,
457 .reg_defaults = cs42xx8_reg,
458 .num_reg_defaults = ARRAY_SIZE(cs42xx8_reg),
459 .volatile_reg = cs42xx8_volatile_register,
460 .writeable_reg = cs42xx8_writeable_register,
461 .cache_type = REGCACHE_MAPLE,
462};
463EXPORT_SYMBOL_GPL(cs42xx8_regmap_config);
464
465static int cs42xx8_component_probe(struct snd_soc_component *component)
466{
467 struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
468 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
469
470 switch (cs42xx8->drvdata->num_adcs) {
471 case 3:
472 snd_soc_add_component_controls(component, cs42xx8_adc3_snd_controls,
473 ARRAY_SIZE(cs42xx8_adc3_snd_controls));
474 snd_soc_dapm_new_controls(dapm, cs42xx8_adc3_dapm_widgets,
475 ARRAY_SIZE(cs42xx8_adc3_dapm_widgets));
476 snd_soc_dapm_add_routes(dapm, cs42xx8_adc3_dapm_routes,
477 ARRAY_SIZE(cs42xx8_adc3_dapm_routes));
478 break;
479 default:
480 break;
481 }
482
483 /* Mute all DAC channels */
484 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, CS42XX8_DACMUTE_ALL);
485
486 return 0;
487}
488
489static const struct snd_soc_component_driver cs42xx8_driver = {
490 .probe = cs42xx8_component_probe,
491 .controls = cs42xx8_snd_controls,
492 .num_controls = ARRAY_SIZE(cs42xx8_snd_controls),
493 .dapm_widgets = cs42xx8_dapm_widgets,
494 .num_dapm_widgets = ARRAY_SIZE(cs42xx8_dapm_widgets),
495 .dapm_routes = cs42xx8_dapm_routes,
496 .num_dapm_routes = ARRAY_SIZE(cs42xx8_dapm_routes),
497 .use_pmdown_time = 1,
498 .endianness = 1,
499};
500
501const struct cs42xx8_driver_data cs42448_data = {
502 .name = "cs42448",
503 .num_adcs = 3,
504};
505EXPORT_SYMBOL_GPL(cs42448_data);
506
507const struct cs42xx8_driver_data cs42888_data = {
508 .name = "cs42888",
509 .num_adcs = 2,
510};
511EXPORT_SYMBOL_GPL(cs42888_data);
512
513int cs42xx8_probe(struct device *dev, struct regmap *regmap, struct cs42xx8_driver_data *drvdata)
514{
515 struct cs42xx8_priv *cs42xx8;
516 int ret, val, i;
517
518 if (IS_ERR(regmap)) {
519 ret = PTR_ERR(regmap);
520 dev_err(dev, "failed to allocate regmap: %d\n", ret);
521 return ret;
522 }
523
524 cs42xx8 = devm_kzalloc(dev, sizeof(*cs42xx8), GFP_KERNEL);
525 if (cs42xx8 == NULL)
526 return -ENOMEM;
527
528 dev_set_drvdata(dev, cs42xx8);
529
530 cs42xx8->regmap = regmap;
531
532 cs42xx8->drvdata = drvdata;
533
534 cs42xx8->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
535 GPIOD_OUT_HIGH);
536 if (IS_ERR(cs42xx8->gpiod_reset))
537 return PTR_ERR(cs42xx8->gpiod_reset);
538
539 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0);
540
541 cs42xx8->clk = devm_clk_get(dev, "mclk");
542 if (IS_ERR(cs42xx8->clk)) {
543 dev_err(dev, "failed to get the clock: %ld\n",
544 PTR_ERR(cs42xx8->clk));
545 return -EINVAL;
546 }
547
548 cs42xx8->sysclk = clk_get_rate(cs42xx8->clk);
549
550 for (i = 0; i < ARRAY_SIZE(cs42xx8->supplies); i++)
551 cs42xx8->supplies[i].supply = cs42xx8_supply_names[i];
552
553 ret = devm_regulator_bulk_get(dev,
554 ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies);
555 if (ret) {
556 dev_err(dev, "failed to request supplies: %d\n", ret);
557 return ret;
558 }
559
560 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
561 cs42xx8->supplies);
562 if (ret) {
563 dev_err(dev, "failed to enable supplies: %d\n", ret);
564 return ret;
565 }
566
567 /* Make sure hardware reset done */
568 msleep(5);
569
570 /* Validate the chip ID */
571 ret = regmap_read(cs42xx8->regmap, CS42XX8_CHIPID, &val);
572 if (ret < 0) {
573 dev_err(dev, "failed to get device ID, ret = %d", ret);
574 goto err_enable;
575 }
576
577 /* The top four bits of the chip ID should be 0000 */
578 if (((val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4) != 0x00) {
579 dev_err(dev, "unmatched chip ID: %d\n",
580 (val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4);
581 ret = -EINVAL;
582 goto err_enable;
583 }
584
585 dev_info(dev, "found device, revision %X\n",
586 val & CS42XX8_CHIPID_REV_ID_MASK);
587
588 cs42xx8_dai.name = cs42xx8->drvdata->name;
589
590 /* Each adc supports stereo input */
591 cs42xx8_dai.capture.channels_max = cs42xx8->drvdata->num_adcs * 2;
592
593 ret = devm_snd_soc_register_component(dev, &cs42xx8_driver, &cs42xx8_dai, 1);
594 if (ret) {
595 dev_err(dev, "failed to register component:%d\n", ret);
596 goto err_enable;
597 }
598
599 regcache_cache_only(cs42xx8->regmap, true);
600
601err_enable:
602 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
603 cs42xx8->supplies);
604
605 return ret;
606}
607EXPORT_SYMBOL_GPL(cs42xx8_probe);
608
609#ifdef CONFIG_PM
610static int cs42xx8_runtime_resume(struct device *dev)
611{
612 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
613 int ret;
614
615 ret = clk_prepare_enable(cs42xx8->clk);
616 if (ret) {
617 dev_err(dev, "failed to enable mclk: %d\n", ret);
618 return ret;
619 }
620
621 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0);
622
623 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
624 cs42xx8->supplies);
625 if (ret) {
626 dev_err(dev, "failed to enable supplies: %d\n", ret);
627 goto err_clk;
628 }
629
630 /* Make sure hardware reset done */
631 msleep(5);
632
633 regcache_cache_only(cs42xx8->regmap, false);
634 regcache_mark_dirty(cs42xx8->regmap);
635
636 ret = regcache_sync(cs42xx8->regmap);
637 if (ret) {
638 dev_err(dev, "failed to sync regmap: %d\n", ret);
639 goto err_bulk;
640 }
641
642 return 0;
643
644err_bulk:
645 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
646 cs42xx8->supplies);
647err_clk:
648 clk_disable_unprepare(cs42xx8->clk);
649
650 return ret;
651}
652
653static int cs42xx8_runtime_suspend(struct device *dev)
654{
655 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
656
657 regcache_cache_only(cs42xx8->regmap, true);
658
659 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
660 cs42xx8->supplies);
661
662 gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 1);
663
664 clk_disable_unprepare(cs42xx8->clk);
665
666 return 0;
667}
668#endif
669
670const struct dev_pm_ops cs42xx8_pm = {
671 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
672 pm_runtime_force_resume)
673 SET_RUNTIME_PM_OPS(cs42xx8_runtime_suspend, cs42xx8_runtime_resume, NULL)
674};
675EXPORT_SYMBOL_GPL(cs42xx8_pm);
676
677MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec Driver");
678MODULE_AUTHOR("Freescale Semiconductor, Inc.");
679MODULE_LICENSE("GPL");
1/*
2 * Cirrus Logic CS42448/CS42888 Audio CODEC Digital Audio Interface (DAI) driver
3 *
4 * Copyright (C) 2014 Freescale Semiconductor, Inc.
5 *
6 * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
7 *
8 * This file is licensed under the terms of the GNU General Public License
9 * version 2. This program is licensed "as is" without any warranty of any
10 * kind, whether express or implied.
11 */
12
13#include <linux/clk.h>
14#include <linux/delay.h>
15#include <linux/module.h>
16#include <linux/of_device.h>
17#include <linux/pm_runtime.h>
18#include <linux/regulator/consumer.h>
19#include <sound/pcm_params.h>
20#include <sound/soc.h>
21#include <sound/tlv.h>
22
23#include "cs42xx8.h"
24
25#define CS42XX8_NUM_SUPPLIES 4
26static const char *const cs42xx8_supply_names[CS42XX8_NUM_SUPPLIES] = {
27 "VA",
28 "VD",
29 "VLS",
30 "VLC",
31};
32
33#define CS42XX8_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
34 SNDRV_PCM_FMTBIT_S20_3LE | \
35 SNDRV_PCM_FMTBIT_S24_LE | \
36 SNDRV_PCM_FMTBIT_S32_LE)
37
38/* codec private data */
39struct cs42xx8_priv {
40 struct regulator_bulk_data supplies[CS42XX8_NUM_SUPPLIES];
41 const struct cs42xx8_driver_data *drvdata;
42 struct regmap *regmap;
43 struct clk *clk;
44
45 bool slave_mode;
46 unsigned long sysclk;
47 u32 tx_channels;
48};
49
50/* -127.5dB to 0dB with step of 0.5dB */
51static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
52/* -64dB to 24dB with step of 0.5dB */
53static const DECLARE_TLV_DB_SCALE(adc_tlv, -6400, 50, 0);
54
55static const char *const cs42xx8_adc_single[] = { "Differential", "Single-Ended" };
56static const char *const cs42xx8_szc[] = { "Immediate Change", "Zero Cross",
57 "Soft Ramp", "Soft Ramp on Zero Cross" };
58
59static const struct soc_enum adc1_single_enum =
60 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 4, 2, cs42xx8_adc_single);
61static const struct soc_enum adc2_single_enum =
62 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 3, 2, cs42xx8_adc_single);
63static const struct soc_enum adc3_single_enum =
64 SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 2, 2, cs42xx8_adc_single);
65static const struct soc_enum dac_szc_enum =
66 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 5, 4, cs42xx8_szc);
67static const struct soc_enum adc_szc_enum =
68 SOC_ENUM_SINGLE(CS42XX8_TXCTL, 0, 4, cs42xx8_szc);
69
70static const struct snd_kcontrol_new cs42xx8_snd_controls[] = {
71 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", CS42XX8_VOLAOUT1,
72 CS42XX8_VOLAOUT2, 0, 0xff, 1, dac_tlv),
73 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", CS42XX8_VOLAOUT3,
74 CS42XX8_VOLAOUT4, 0, 0xff, 1, dac_tlv),
75 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", CS42XX8_VOLAOUT5,
76 CS42XX8_VOLAOUT6, 0, 0xff, 1, dac_tlv),
77 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", CS42XX8_VOLAOUT7,
78 CS42XX8_VOLAOUT8, 0, 0xff, 1, dac_tlv),
79 SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", CS42XX8_VOLAIN1,
80 CS42XX8_VOLAIN2, 0, -0x80, 0x30, 7, 0, adc_tlv),
81 SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", CS42XX8_VOLAIN3,
82 CS42XX8_VOLAIN4, 0, -0x80, 0x30, 7, 0, adc_tlv),
83 SOC_DOUBLE("DAC1 Invert Switch", CS42XX8_DACINV, 0, 1, 1, 0),
84 SOC_DOUBLE("DAC2 Invert Switch", CS42XX8_DACINV, 2, 3, 1, 0),
85 SOC_DOUBLE("DAC3 Invert Switch", CS42XX8_DACINV, 4, 5, 1, 0),
86 SOC_DOUBLE("DAC4 Invert Switch", CS42XX8_DACINV, 6, 7, 1, 0),
87 SOC_DOUBLE("ADC1 Invert Switch", CS42XX8_ADCINV, 0, 1, 1, 0),
88 SOC_DOUBLE("ADC2 Invert Switch", CS42XX8_ADCINV, 2, 3, 1, 0),
89 SOC_SINGLE("ADC High-Pass Filter Switch", CS42XX8_ADCCTL, 7, 1, 1),
90 SOC_SINGLE("DAC De-emphasis Switch", CS42XX8_ADCCTL, 5, 1, 0),
91 SOC_ENUM("ADC1 Single Ended Mode Switch", adc1_single_enum),
92 SOC_ENUM("ADC2 Single Ended Mode Switch", adc2_single_enum),
93 SOC_SINGLE("DAC Single Volume Control Switch", CS42XX8_TXCTL, 7, 1, 0),
94 SOC_ENUM("DAC Soft Ramp & Zero Cross Control Switch", dac_szc_enum),
95 SOC_SINGLE("DAC Auto Mute Switch", CS42XX8_TXCTL, 4, 1, 0),
96 SOC_SINGLE("Mute ADC Serial Port Switch", CS42XX8_TXCTL, 3, 1, 0),
97 SOC_SINGLE("ADC Single Volume Control Switch", CS42XX8_TXCTL, 2, 1, 0),
98 SOC_ENUM("ADC Soft Ramp & Zero Cross Control Switch", adc_szc_enum),
99};
100
101static const struct snd_kcontrol_new cs42xx8_adc3_snd_controls[] = {
102 SOC_DOUBLE_R_S_TLV("ADC3 Capture Volume", CS42XX8_VOLAIN5,
103 CS42XX8_VOLAIN6, 0, -0x80, 0x30, 7, 0, adc_tlv),
104 SOC_DOUBLE("ADC3 Invert Switch", CS42XX8_ADCINV, 4, 5, 1, 0),
105 SOC_ENUM("ADC3 Single Ended Mode Switch", adc3_single_enum),
106};
107
108static const struct snd_soc_dapm_widget cs42xx8_dapm_widgets[] = {
109 SND_SOC_DAPM_DAC("DAC1", "Playback", CS42XX8_PWRCTL, 1, 1),
110 SND_SOC_DAPM_DAC("DAC2", "Playback", CS42XX8_PWRCTL, 2, 1),
111 SND_SOC_DAPM_DAC("DAC3", "Playback", CS42XX8_PWRCTL, 3, 1),
112 SND_SOC_DAPM_DAC("DAC4", "Playback", CS42XX8_PWRCTL, 4, 1),
113
114 SND_SOC_DAPM_OUTPUT("AOUT1L"),
115 SND_SOC_DAPM_OUTPUT("AOUT1R"),
116 SND_SOC_DAPM_OUTPUT("AOUT2L"),
117 SND_SOC_DAPM_OUTPUT("AOUT2R"),
118 SND_SOC_DAPM_OUTPUT("AOUT3L"),
119 SND_SOC_DAPM_OUTPUT("AOUT3R"),
120 SND_SOC_DAPM_OUTPUT("AOUT4L"),
121 SND_SOC_DAPM_OUTPUT("AOUT4R"),
122
123 SND_SOC_DAPM_ADC("ADC1", "Capture", CS42XX8_PWRCTL, 5, 1),
124 SND_SOC_DAPM_ADC("ADC2", "Capture", CS42XX8_PWRCTL, 6, 1),
125
126 SND_SOC_DAPM_INPUT("AIN1L"),
127 SND_SOC_DAPM_INPUT("AIN1R"),
128 SND_SOC_DAPM_INPUT("AIN2L"),
129 SND_SOC_DAPM_INPUT("AIN2R"),
130
131 SND_SOC_DAPM_SUPPLY("PWR", CS42XX8_PWRCTL, 0, 1, NULL, 0),
132};
133
134static const struct snd_soc_dapm_widget cs42xx8_adc3_dapm_widgets[] = {
135 SND_SOC_DAPM_ADC("ADC3", "Capture", CS42XX8_PWRCTL, 7, 1),
136
137 SND_SOC_DAPM_INPUT("AIN3L"),
138 SND_SOC_DAPM_INPUT("AIN3R"),
139};
140
141static const struct snd_soc_dapm_route cs42xx8_dapm_routes[] = {
142 /* Playback */
143 { "AOUT1L", NULL, "DAC1" },
144 { "AOUT1R", NULL, "DAC1" },
145 { "DAC1", NULL, "PWR" },
146
147 { "AOUT2L", NULL, "DAC2" },
148 { "AOUT2R", NULL, "DAC2" },
149 { "DAC2", NULL, "PWR" },
150
151 { "AOUT3L", NULL, "DAC3" },
152 { "AOUT3R", NULL, "DAC3" },
153 { "DAC3", NULL, "PWR" },
154
155 { "AOUT4L", NULL, "DAC4" },
156 { "AOUT4R", NULL, "DAC4" },
157 { "DAC4", NULL, "PWR" },
158
159 /* Capture */
160 { "ADC1", NULL, "AIN1L" },
161 { "ADC1", NULL, "AIN1R" },
162 { "ADC1", NULL, "PWR" },
163
164 { "ADC2", NULL, "AIN2L" },
165 { "ADC2", NULL, "AIN2R" },
166 { "ADC2", NULL, "PWR" },
167};
168
169static const struct snd_soc_dapm_route cs42xx8_adc3_dapm_routes[] = {
170 /* Capture */
171 { "ADC3", NULL, "AIN3L" },
172 { "ADC3", NULL, "AIN3R" },
173 { "ADC3", NULL, "PWR" },
174};
175
176struct cs42xx8_ratios {
177 unsigned int ratio;
178 unsigned char speed;
179 unsigned char mclk;
180};
181
182static const struct cs42xx8_ratios cs42xx8_ratios[] = {
183 { 64, CS42XX8_FM_QUAD, CS42XX8_FUNCMOD_MFREQ_256(4) },
184 { 96, CS42XX8_FM_QUAD, CS42XX8_FUNCMOD_MFREQ_384(4) },
185 { 128, CS42XX8_FM_QUAD, CS42XX8_FUNCMOD_MFREQ_512(4) },
186 { 192, CS42XX8_FM_QUAD, CS42XX8_FUNCMOD_MFREQ_768(4) },
187 { 256, CS42XX8_FM_SINGLE, CS42XX8_FUNCMOD_MFREQ_256(1) },
188 { 384, CS42XX8_FM_SINGLE, CS42XX8_FUNCMOD_MFREQ_384(1) },
189 { 512, CS42XX8_FM_SINGLE, CS42XX8_FUNCMOD_MFREQ_512(1) },
190 { 768, CS42XX8_FM_SINGLE, CS42XX8_FUNCMOD_MFREQ_768(1) },
191 { 1024, CS42XX8_FM_SINGLE, CS42XX8_FUNCMOD_MFREQ_1024(1) }
192};
193
194static int cs42xx8_set_dai_sysclk(struct snd_soc_dai *codec_dai,
195 int clk_id, unsigned int freq, int dir)
196{
197 struct snd_soc_codec *codec = codec_dai->codec;
198 struct cs42xx8_priv *cs42xx8 = snd_soc_codec_get_drvdata(codec);
199
200 cs42xx8->sysclk = freq;
201
202 return 0;
203}
204
205static int cs42xx8_set_dai_fmt(struct snd_soc_dai *codec_dai,
206 unsigned int format)
207{
208 struct snd_soc_codec *codec = codec_dai->codec;
209 struct cs42xx8_priv *cs42xx8 = snd_soc_codec_get_drvdata(codec);
210 u32 val;
211
212 /* Set DAI format */
213 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
214 case SND_SOC_DAIFMT_LEFT_J:
215 val = CS42XX8_INTF_DAC_DIF_LEFTJ | CS42XX8_INTF_ADC_DIF_LEFTJ;
216 break;
217 case SND_SOC_DAIFMT_I2S:
218 val = CS42XX8_INTF_DAC_DIF_I2S | CS42XX8_INTF_ADC_DIF_I2S;
219 break;
220 case SND_SOC_DAIFMT_RIGHT_J:
221 val = CS42XX8_INTF_DAC_DIF_RIGHTJ | CS42XX8_INTF_ADC_DIF_RIGHTJ;
222 break;
223 case SND_SOC_DAIFMT_DSP_A:
224 val = CS42XX8_INTF_DAC_DIF_TDM | CS42XX8_INTF_ADC_DIF_TDM;
225 break;
226 default:
227 dev_err(codec->dev, "unsupported dai format\n");
228 return -EINVAL;
229 }
230
231 regmap_update_bits(cs42xx8->regmap, CS42XX8_INTF,
232 CS42XX8_INTF_DAC_DIF_MASK |
233 CS42XX8_INTF_ADC_DIF_MASK, val);
234
235 /* Set master/slave audio interface */
236 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
237 case SND_SOC_DAIFMT_CBS_CFS:
238 cs42xx8->slave_mode = true;
239 break;
240 case SND_SOC_DAIFMT_CBM_CFM:
241 cs42xx8->slave_mode = false;
242 break;
243 default:
244 dev_err(codec->dev, "unsupported master/slave mode\n");
245 return -EINVAL;
246 }
247
248 return 0;
249}
250
251static int cs42xx8_hw_params(struct snd_pcm_substream *substream,
252 struct snd_pcm_hw_params *params,
253 struct snd_soc_dai *dai)
254{
255 struct snd_soc_codec *codec = dai->codec;
256 struct cs42xx8_priv *cs42xx8 = snd_soc_codec_get_drvdata(codec);
257 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
258 u32 ratio = cs42xx8->sysclk / params_rate(params);
259 u32 i, fm, val, mask;
260
261 if (tx)
262 cs42xx8->tx_channels = params_channels(params);
263
264 for (i = 0; i < ARRAY_SIZE(cs42xx8_ratios); i++) {
265 if (cs42xx8_ratios[i].ratio == ratio)
266 break;
267 }
268
269 if (i == ARRAY_SIZE(cs42xx8_ratios)) {
270 dev_err(codec->dev, "unsupported sysclk ratio\n");
271 return -EINVAL;
272 }
273
274 mask = CS42XX8_FUNCMOD_MFREQ_MASK;
275 val = cs42xx8_ratios[i].mclk;
276
277 fm = cs42xx8->slave_mode ? CS42XX8_FM_AUTO : cs42xx8_ratios[i].speed;
278
279 regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD,
280 CS42XX8_FUNCMOD_xC_FM_MASK(tx) | mask,
281 CS42XX8_FUNCMOD_xC_FM(tx, fm) | val);
282
283 return 0;
284}
285
286static int cs42xx8_digital_mute(struct snd_soc_dai *dai, int mute)
287{
288 struct snd_soc_codec *codec = dai->codec;
289 struct cs42xx8_priv *cs42xx8 = snd_soc_codec_get_drvdata(codec);
290 u8 dac_unmute = cs42xx8->tx_channels ?
291 ~((0x1 << cs42xx8->tx_channels) - 1) : 0;
292
293 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE,
294 mute ? CS42XX8_DACMUTE_ALL : dac_unmute);
295
296 return 0;
297}
298
299static const struct snd_soc_dai_ops cs42xx8_dai_ops = {
300 .set_fmt = cs42xx8_set_dai_fmt,
301 .set_sysclk = cs42xx8_set_dai_sysclk,
302 .hw_params = cs42xx8_hw_params,
303 .digital_mute = cs42xx8_digital_mute,
304};
305
306static struct snd_soc_dai_driver cs42xx8_dai = {
307 .playback = {
308 .stream_name = "Playback",
309 .channels_min = 1,
310 .channels_max = 8,
311 .rates = SNDRV_PCM_RATE_8000_192000,
312 .formats = CS42XX8_FORMATS,
313 },
314 .capture = {
315 .stream_name = "Capture",
316 .channels_min = 1,
317 .rates = SNDRV_PCM_RATE_8000_192000,
318 .formats = CS42XX8_FORMATS,
319 },
320 .ops = &cs42xx8_dai_ops,
321};
322
323static const struct reg_default cs42xx8_reg[] = {
324 { 0x02, 0x00 }, /* Power Control */
325 { 0x03, 0xF0 }, /* Functional Mode */
326 { 0x04, 0x46 }, /* Interface Formats */
327 { 0x05, 0x00 }, /* ADC Control & DAC De-Emphasis */
328 { 0x06, 0x10 }, /* Transition Control */
329 { 0x07, 0x00 }, /* DAC Channel Mute */
330 { 0x08, 0x00 }, /* Volume Control AOUT1 */
331 { 0x09, 0x00 }, /* Volume Control AOUT2 */
332 { 0x0a, 0x00 }, /* Volume Control AOUT3 */
333 { 0x0b, 0x00 }, /* Volume Control AOUT4 */
334 { 0x0c, 0x00 }, /* Volume Control AOUT5 */
335 { 0x0d, 0x00 }, /* Volume Control AOUT6 */
336 { 0x0e, 0x00 }, /* Volume Control AOUT7 */
337 { 0x0f, 0x00 }, /* Volume Control AOUT8 */
338 { 0x10, 0x00 }, /* DAC Channel Invert */
339 { 0x11, 0x00 }, /* Volume Control AIN1 */
340 { 0x12, 0x00 }, /* Volume Control AIN2 */
341 { 0x13, 0x00 }, /* Volume Control AIN3 */
342 { 0x14, 0x00 }, /* Volume Control AIN4 */
343 { 0x15, 0x00 }, /* Volume Control AIN5 */
344 { 0x16, 0x00 }, /* Volume Control AIN6 */
345 { 0x17, 0x00 }, /* ADC Channel Invert */
346 { 0x18, 0x00 }, /* Status Control */
347 { 0x1a, 0x00 }, /* Status Mask */
348 { 0x1b, 0x00 }, /* MUTEC Pin Control */
349};
350
351static bool cs42xx8_volatile_register(struct device *dev, unsigned int reg)
352{
353 switch (reg) {
354 case CS42XX8_STATUS:
355 return true;
356 default:
357 return false;
358 }
359}
360
361static bool cs42xx8_writeable_register(struct device *dev, unsigned int reg)
362{
363 switch (reg) {
364 case CS42XX8_CHIPID:
365 case CS42XX8_STATUS:
366 return false;
367 default:
368 return true;
369 }
370}
371
372const struct regmap_config cs42xx8_regmap_config = {
373 .reg_bits = 8,
374 .val_bits = 8,
375
376 .max_register = CS42XX8_LASTREG,
377 .reg_defaults = cs42xx8_reg,
378 .num_reg_defaults = ARRAY_SIZE(cs42xx8_reg),
379 .volatile_reg = cs42xx8_volatile_register,
380 .writeable_reg = cs42xx8_writeable_register,
381 .cache_type = REGCACHE_RBTREE,
382};
383EXPORT_SYMBOL_GPL(cs42xx8_regmap_config);
384
385static int cs42xx8_codec_probe(struct snd_soc_codec *codec)
386{
387 struct cs42xx8_priv *cs42xx8 = snd_soc_codec_get_drvdata(codec);
388 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
389
390 switch (cs42xx8->drvdata->num_adcs) {
391 case 3:
392 snd_soc_add_codec_controls(codec, cs42xx8_adc3_snd_controls,
393 ARRAY_SIZE(cs42xx8_adc3_snd_controls));
394 snd_soc_dapm_new_controls(dapm, cs42xx8_adc3_dapm_widgets,
395 ARRAY_SIZE(cs42xx8_adc3_dapm_widgets));
396 snd_soc_dapm_add_routes(dapm, cs42xx8_adc3_dapm_routes,
397 ARRAY_SIZE(cs42xx8_adc3_dapm_routes));
398 break;
399 default:
400 break;
401 }
402
403 /* Mute all DAC channels */
404 regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, CS42XX8_DACMUTE_ALL);
405
406 return 0;
407}
408
409static const struct snd_soc_codec_driver cs42xx8_driver = {
410 .probe = cs42xx8_codec_probe,
411 .idle_bias_off = true,
412
413 .component_driver = {
414 .controls = cs42xx8_snd_controls,
415 .num_controls = ARRAY_SIZE(cs42xx8_snd_controls),
416 .dapm_widgets = cs42xx8_dapm_widgets,
417 .num_dapm_widgets = ARRAY_SIZE(cs42xx8_dapm_widgets),
418 .dapm_routes = cs42xx8_dapm_routes,
419 .num_dapm_routes = ARRAY_SIZE(cs42xx8_dapm_routes),
420 },
421};
422
423const struct cs42xx8_driver_data cs42448_data = {
424 .name = "cs42448",
425 .num_adcs = 3,
426};
427EXPORT_SYMBOL_GPL(cs42448_data);
428
429const struct cs42xx8_driver_data cs42888_data = {
430 .name = "cs42888",
431 .num_adcs = 2,
432};
433EXPORT_SYMBOL_GPL(cs42888_data);
434
435const struct of_device_id cs42xx8_of_match[] = {
436 { .compatible = "cirrus,cs42448", .data = &cs42448_data, },
437 { .compatible = "cirrus,cs42888", .data = &cs42888_data, },
438 { /* sentinel */ }
439};
440MODULE_DEVICE_TABLE(of, cs42xx8_of_match);
441EXPORT_SYMBOL_GPL(cs42xx8_of_match);
442
443int cs42xx8_probe(struct device *dev, struct regmap *regmap)
444{
445 const struct of_device_id *of_id;
446 struct cs42xx8_priv *cs42xx8;
447 int ret, val, i;
448
449 if (IS_ERR(regmap)) {
450 ret = PTR_ERR(regmap);
451 dev_err(dev, "failed to allocate regmap: %d\n", ret);
452 return ret;
453 }
454
455 cs42xx8 = devm_kzalloc(dev, sizeof(*cs42xx8), GFP_KERNEL);
456 if (cs42xx8 == NULL)
457 return -ENOMEM;
458
459 cs42xx8->regmap = regmap;
460 dev_set_drvdata(dev, cs42xx8);
461
462 of_id = of_match_device(cs42xx8_of_match, dev);
463 if (of_id)
464 cs42xx8->drvdata = of_id->data;
465
466 if (!cs42xx8->drvdata) {
467 dev_err(dev, "failed to find driver data\n");
468 return -EINVAL;
469 }
470
471 cs42xx8->clk = devm_clk_get(dev, "mclk");
472 if (IS_ERR(cs42xx8->clk)) {
473 dev_err(dev, "failed to get the clock: %ld\n",
474 PTR_ERR(cs42xx8->clk));
475 return -EINVAL;
476 }
477
478 cs42xx8->sysclk = clk_get_rate(cs42xx8->clk);
479
480 for (i = 0; i < ARRAY_SIZE(cs42xx8->supplies); i++)
481 cs42xx8->supplies[i].supply = cs42xx8_supply_names[i];
482
483 ret = devm_regulator_bulk_get(dev,
484 ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies);
485 if (ret) {
486 dev_err(dev, "failed to request supplies: %d\n", ret);
487 return ret;
488 }
489
490 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
491 cs42xx8->supplies);
492 if (ret) {
493 dev_err(dev, "failed to enable supplies: %d\n", ret);
494 return ret;
495 }
496
497 /* Make sure hardware reset done */
498 msleep(5);
499
500 /* Validate the chip ID */
501 ret = regmap_read(cs42xx8->regmap, CS42XX8_CHIPID, &val);
502 if (ret < 0) {
503 dev_err(dev, "failed to get device ID, ret = %d", ret);
504 goto err_enable;
505 }
506
507 /* The top four bits of the chip ID should be 0000 */
508 if (((val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4) != 0x00) {
509 dev_err(dev, "unmatched chip ID: %d\n",
510 (val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4);
511 ret = -EINVAL;
512 goto err_enable;
513 }
514
515 dev_info(dev, "found device, revision %X\n",
516 val & CS42XX8_CHIPID_REV_ID_MASK);
517
518 cs42xx8_dai.name = cs42xx8->drvdata->name;
519
520 /* Each adc supports stereo input */
521 cs42xx8_dai.capture.channels_max = cs42xx8->drvdata->num_adcs * 2;
522
523 ret = snd_soc_register_codec(dev, &cs42xx8_driver, &cs42xx8_dai, 1);
524 if (ret) {
525 dev_err(dev, "failed to register codec:%d\n", ret);
526 goto err_enable;
527 }
528
529 regcache_cache_only(cs42xx8->regmap, true);
530
531err_enable:
532 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
533 cs42xx8->supplies);
534
535 return ret;
536}
537EXPORT_SYMBOL_GPL(cs42xx8_probe);
538
539#ifdef CONFIG_PM
540static int cs42xx8_runtime_resume(struct device *dev)
541{
542 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
543 int ret;
544
545 ret = clk_prepare_enable(cs42xx8->clk);
546 if (ret) {
547 dev_err(dev, "failed to enable mclk: %d\n", ret);
548 return ret;
549 }
550
551 ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
552 cs42xx8->supplies);
553 if (ret) {
554 dev_err(dev, "failed to enable supplies: %d\n", ret);
555 goto err_clk;
556 }
557
558 /* Make sure hardware reset done */
559 msleep(5);
560
561 regcache_cache_only(cs42xx8->regmap, false);
562
563 ret = regcache_sync(cs42xx8->regmap);
564 if (ret) {
565 dev_err(dev, "failed to sync regmap: %d\n", ret);
566 goto err_bulk;
567 }
568
569 return 0;
570
571err_bulk:
572 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
573 cs42xx8->supplies);
574err_clk:
575 clk_disable_unprepare(cs42xx8->clk);
576
577 return ret;
578}
579
580static int cs42xx8_runtime_suspend(struct device *dev)
581{
582 struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
583
584 regcache_cache_only(cs42xx8->regmap, true);
585
586 regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
587 cs42xx8->supplies);
588
589 clk_disable_unprepare(cs42xx8->clk);
590
591 return 0;
592}
593#endif
594
595const struct dev_pm_ops cs42xx8_pm = {
596 SET_RUNTIME_PM_OPS(cs42xx8_runtime_suspend, cs42xx8_runtime_resume, NULL)
597};
598EXPORT_SYMBOL_GPL(cs42xx8_pm);
599
600MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec Driver");
601MODULE_AUTHOR("Freescale Semiconductor, Inc.");
602MODULE_LICENSE("GPL");