2 * CS4271 ASoC codec driver
4 * Copyright (c) 2010 Alexander Sverdlin <subaparts@yandex.ru>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * This driver support CS4271 codec being master or slave, working
17 * in control port mode, connected either via SPI or I2C.
18 * The data format accepted is I2S or left-justified.
19 * DAPM support not implemented.
22 #include <linux/module.h>
23 #include <linux/slab.h>
24 #include <linux/delay.h>
25 #include <linux/gpio.h>
27 #include <linux/of_device.h>
28 #include <linux/of_gpio.h>
29 #include <linux/regulator/consumer.h>
30 #include <sound/pcm.h>
31 #include <sound/soc.h>
32 #include <sound/tlv.h>
33 #include <sound/cs4271.h>
36 #define CS4271_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
37 SNDRV_PCM_FMTBIT_S24_LE | \
38 SNDRV_PCM_FMTBIT_S32_LE)
39 #define CS4271_PCM_RATES SNDRV_PCM_RATE_8000_192000
44 #define CS4271_MODE1 0x01 /* Mode Control 1 */
45 #define CS4271_DACCTL 0x02 /* DAC Control */
46 #define CS4271_DACVOL 0x03 /* DAC Volume & Mixing Control */
47 #define CS4271_VOLA 0x04 /* DAC Channel A Volume Control */
48 #define CS4271_VOLB 0x05 /* DAC Channel B Volume Control */
49 #define CS4271_ADCCTL 0x06 /* ADC Control */
50 #define CS4271_MODE2 0x07 /* Mode Control 2 */
51 #define CS4271_CHIPID 0x08 /* Chip ID */
53 #define CS4271_FIRSTREG CS4271_MODE1
54 #define CS4271_LASTREG CS4271_MODE2
55 #define CS4271_NR_REGS ((CS4271_LASTREG & 0xFF) + 1)
57 /* Bit masks for the CS4271 registers */
58 #define CS4271_MODE1_MODE_MASK 0xC0
59 #define CS4271_MODE1_MODE_1X 0x00
60 #define CS4271_MODE1_MODE_2X 0x80
61 #define CS4271_MODE1_MODE_4X 0xC0
63 #define CS4271_MODE1_DIV_MASK 0x30
64 #define CS4271_MODE1_DIV_1 0x00
65 #define CS4271_MODE1_DIV_15 0x10
66 #define CS4271_MODE1_DIV_2 0x20
67 #define CS4271_MODE1_DIV_3 0x30
69 #define CS4271_MODE1_MASTER 0x08
71 #define CS4271_MODE1_DAC_DIF_MASK 0x07
72 #define CS4271_MODE1_DAC_DIF_LJ 0x00
73 #define CS4271_MODE1_DAC_DIF_I2S 0x01
74 #define CS4271_MODE1_DAC_DIF_RJ16 0x02
75 #define CS4271_MODE1_DAC_DIF_RJ24 0x03
76 #define CS4271_MODE1_DAC_DIF_RJ20 0x04
77 #define CS4271_MODE1_DAC_DIF_RJ18 0x05
79 #define CS4271_DACCTL_AMUTE 0x80
80 #define CS4271_DACCTL_IF_SLOW 0x40
82 #define CS4271_DACCTL_DEM_MASK 0x30
83 #define CS4271_DACCTL_DEM_DIS 0x00
84 #define CS4271_DACCTL_DEM_441 0x10
85 #define CS4271_DACCTL_DEM_48 0x20
86 #define CS4271_DACCTL_DEM_32 0x30
88 #define CS4271_DACCTL_SVRU 0x08
89 #define CS4271_DACCTL_SRD 0x04
90 #define CS4271_DACCTL_INVA 0x02
91 #define CS4271_DACCTL_INVB 0x01
93 #define CS4271_DACVOL_BEQUA 0x40
94 #define CS4271_DACVOL_SOFT 0x20
95 #define CS4271_DACVOL_ZEROC 0x10
97 #define CS4271_DACVOL_ATAPI_MASK 0x0F
98 #define CS4271_DACVOL_ATAPI_M_M 0x00
99 #define CS4271_DACVOL_ATAPI_M_BR 0x01
100 #define CS4271_DACVOL_ATAPI_M_BL 0x02
101 #define CS4271_DACVOL_ATAPI_M_BLR2 0x03
102 #define CS4271_DACVOL_ATAPI_AR_M 0x04
103 #define CS4271_DACVOL_ATAPI_AR_BR 0x05
104 #define CS4271_DACVOL_ATAPI_AR_BL 0x06
105 #define CS4271_DACVOL_ATAPI_AR_BLR2 0x07
106 #define CS4271_DACVOL_ATAPI_AL_M 0x08
107 #define CS4271_DACVOL_ATAPI_AL_BR 0x09
108 #define CS4271_DACVOL_ATAPI_AL_BL 0x0A
109 #define CS4271_DACVOL_ATAPI_AL_BLR2 0x0B
110 #define CS4271_DACVOL_ATAPI_ALR2_M 0x0C
111 #define CS4271_DACVOL_ATAPI_ALR2_BR 0x0D
112 #define CS4271_DACVOL_ATAPI_ALR2_BL 0x0E
113 #define CS4271_DACVOL_ATAPI_ALR2_BLR2 0x0F
115 #define CS4271_VOLA_MUTE 0x80
116 #define CS4271_VOLA_VOL_MASK 0x7F
117 #define CS4271_VOLB_MUTE 0x80
118 #define CS4271_VOLB_VOL_MASK 0x7F
120 #define CS4271_ADCCTL_DITHER16 0x20
122 #define CS4271_ADCCTL_ADC_DIF_MASK 0x10
123 #define CS4271_ADCCTL_ADC_DIF_LJ 0x00
124 #define CS4271_ADCCTL_ADC_DIF_I2S 0x10
126 #define CS4271_ADCCTL_MUTEA 0x08
127 #define CS4271_ADCCTL_MUTEB 0x04
128 #define CS4271_ADCCTL_HPFDA 0x02
129 #define CS4271_ADCCTL_HPFDB 0x01
131 #define CS4271_MODE2_LOOP 0x10
132 #define CS4271_MODE2_MUTECAEQUB 0x08
133 #define CS4271_MODE2_FREEZE 0x04
134 #define CS4271_MODE2_CPEN 0x02
135 #define CS4271_MODE2_PDN 0x01
137 #define CS4271_CHIPID_PART_MASK 0xF0
138 #define CS4271_CHIPID_REV_MASK 0x0F
141 * Default CS4271 power-up configuration
142 * Array contains non-existing in hw register at address 0
143 * Array do not include Chip ID, as codec driver does not use
144 * registers read operations at all
146 static const struct reg_default cs4271_reg_defaults[] = {
147 { CS4271_MODE1, 0, },
148 { CS4271_DACCTL, CS4271_DACCTL_AMUTE, },
149 { CS4271_DACVOL, CS4271_DACVOL_SOFT | CS4271_DACVOL_ATAPI_AL_BR, },
152 { CS4271_ADCCTL, 0, },
153 { CS4271_MODE2, 0, },
156 static bool cs4271_volatile_reg(struct device *dev, unsigned int reg)
158 return reg == CS4271_CHIPID;
161 static const char * const supply_names[] = {
165 struct cs4271_private {
169 struct regmap *regmap;
170 /* Current sample rate for de-emphasis control */
172 /* GPIO driving Reset pin, if any */
174 /* GPIO that disable serial bus, if any */
176 /* enable soft reset workaround */
177 bool enable_soft_reset;
178 struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
181 static const struct snd_soc_dapm_widget cs4271_dapm_widgets[] = {
182 SND_SOC_DAPM_INPUT("AINA"),
183 SND_SOC_DAPM_INPUT("AINB"),
185 SND_SOC_DAPM_OUTPUT("AOUTA+"),
186 SND_SOC_DAPM_OUTPUT("AOUTA-"),
187 SND_SOC_DAPM_OUTPUT("AOUTB+"),
188 SND_SOC_DAPM_OUTPUT("AOUTB-"),
191 static const struct snd_soc_dapm_route cs4271_dapm_routes[] = {
192 { "Capture", NULL, "AINA" },
193 { "Capture", NULL, "AINB" },
195 { "AOUTA+", NULL, "Playback" },
196 { "AOUTA-", NULL, "Playback" },
197 { "AOUTB+", NULL, "Playback" },
198 { "AOUTB-", NULL, "Playback" },
202 * @freq is the desired MCLK rate
203 * MCLK rate should (c) be the sample rate, multiplied by one of the
204 * ratios listed in cs4271_mclk_fs_ratios table
206 static int cs4271_set_dai_sysclk(struct snd_soc_dai *codec_dai,
207 int clk_id, unsigned int freq, int dir)
209 struct snd_soc_codec *codec = codec_dai->codec;
210 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
216 static int cs4271_set_dai_fmt(struct snd_soc_dai *codec_dai,
219 struct snd_soc_codec *codec = codec_dai->codec;
220 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
221 unsigned int val = 0;
224 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
225 case SND_SOC_DAIFMT_CBS_CFS:
228 case SND_SOC_DAIFMT_CBM_CFM:
230 val |= CS4271_MODE1_MASTER;
233 dev_err(codec->dev, "Invalid DAI format\n");
237 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
238 case SND_SOC_DAIFMT_LEFT_J:
239 val |= CS4271_MODE1_DAC_DIF_LJ;
240 ret = regmap_update_bits(cs4271->regmap, CS4271_ADCCTL,
241 CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_LJ);
245 case SND_SOC_DAIFMT_I2S:
246 val |= CS4271_MODE1_DAC_DIF_I2S;
247 ret = regmap_update_bits(cs4271->regmap, CS4271_ADCCTL,
248 CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_I2S);
253 dev_err(codec->dev, "Invalid DAI format\n");
257 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE1,
258 CS4271_MODE1_DAC_DIF_MASK | CS4271_MODE1_MASTER, val);
264 static int cs4271_deemph[] = {0, 44100, 48000, 32000};
266 static int cs4271_set_deemph(struct snd_soc_codec *codec)
268 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
270 int val = CS4271_DACCTL_DEM_DIS;
272 if (cs4271->deemph) {
273 /* Find closest de-emphasis freq */
275 for (i = 2; i < ARRAY_SIZE(cs4271_deemph); i++)
276 if (abs(cs4271_deemph[i] - cs4271->rate) <
277 abs(cs4271_deemph[val] - cs4271->rate))
282 ret = regmap_update_bits(cs4271->regmap, CS4271_DACCTL,
283 CS4271_DACCTL_DEM_MASK, val);
289 static int cs4271_get_deemph(struct snd_kcontrol *kcontrol,
290 struct snd_ctl_elem_value *ucontrol)
292 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
293 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
295 ucontrol->value.integer.value[0] = cs4271->deemph;
299 static int cs4271_put_deemph(struct snd_kcontrol *kcontrol,
300 struct snd_ctl_elem_value *ucontrol)
302 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
303 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
305 cs4271->deemph = ucontrol->value.integer.value[0];
306 return cs4271_set_deemph(codec);
309 struct cs4271_clk_cfg {
310 bool master; /* codec mode */
311 u8 speed_mode; /* codec speed mode: 1x, 2x, 4x */
312 unsigned short ratio; /* MCLK / sample rate */
313 u8 ratio_mask; /* ratio bit mask for Master mode */
316 static struct cs4271_clk_cfg cs4271_clk_tab[] = {
317 {1, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1},
318 {1, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_15},
319 {1, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_2},
320 {1, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_3},
321 {1, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1},
322 {1, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_15},
323 {1, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_2},
324 {1, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_3},
325 {1, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1},
326 {1, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_15},
327 {1, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_2},
328 {1, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_3},
329 {0, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1},
330 {0, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_1},
331 {0, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_1},
332 {0, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_2},
333 {0, CS4271_MODE1_MODE_1X, 1024, CS4271_MODE1_DIV_2},
334 {0, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1},
335 {0, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_1},
336 {0, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_1},
337 {0, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_2},
338 {0, CS4271_MODE1_MODE_2X, 512, CS4271_MODE1_DIV_2},
339 {0, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1},
340 {0, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_1},
341 {0, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_1},
342 {0, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_2},
343 {0, CS4271_MODE1_MODE_4X, 256, CS4271_MODE1_DIV_2},
346 #define CS4171_NR_RATIOS ARRAY_SIZE(cs4271_clk_tab)
348 static int cs4271_hw_params(struct snd_pcm_substream *substream,
349 struct snd_pcm_hw_params *params,
350 struct snd_soc_dai *dai)
352 struct snd_soc_codec *codec = dai->codec;
353 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
355 unsigned int ratio, val;
357 if (cs4271->enable_soft_reset) {
359 * Put the codec in soft reset and back again in case it's not
360 * currently streaming data. This way of bringing the codec in
361 * sync to the current clocks is not explicitly documented in
362 * the data sheet, but it seems to work fine, and in contrast
363 * to a read hardware reset, we don't have to sync back all
364 * registers every time.
367 if ((substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
368 !dai->capture_active) ||
369 (substream->stream == SNDRV_PCM_STREAM_CAPTURE &&
370 !dai->playback_active)) {
371 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
377 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
378 CS4271_MODE2_PDN, 0);
384 cs4271->rate = params_rate(params);
387 if (cs4271->rate < 50000)
388 val = CS4271_MODE1_MODE_1X;
389 else if (cs4271->rate < 100000)
390 val = CS4271_MODE1_MODE_2X;
392 val = CS4271_MODE1_MODE_4X;
394 ratio = cs4271->mclk / cs4271->rate;
395 for (i = 0; i < CS4171_NR_RATIOS; i++)
396 if ((cs4271_clk_tab[i].master == cs4271->master) &&
397 (cs4271_clk_tab[i].speed_mode == val) &&
398 (cs4271_clk_tab[i].ratio == ratio))
401 if (i == CS4171_NR_RATIOS) {
402 dev_err(codec->dev, "Invalid sample rate\n");
406 val |= cs4271_clk_tab[i].ratio_mask;
408 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE1,
409 CS4271_MODE1_MODE_MASK | CS4271_MODE1_DIV_MASK, val);
413 return cs4271_set_deemph(codec);
416 static int cs4271_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
418 struct snd_soc_codec *codec = dai->codec;
419 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
424 if (stream != SNDRV_PCM_STREAM_PLAYBACK)
428 val_a = CS4271_VOLA_MUTE;
429 val_b = CS4271_VOLB_MUTE;
432 ret = regmap_update_bits(cs4271->regmap, CS4271_VOLA,
433 CS4271_VOLA_MUTE, val_a);
437 ret = regmap_update_bits(cs4271->regmap, CS4271_VOLB,
438 CS4271_VOLB_MUTE, val_b);
445 /* CS4271 controls */
446 static DECLARE_TLV_DB_SCALE(cs4271_dac_tlv, -12700, 100, 0);
448 static const struct snd_kcontrol_new cs4271_snd_controls[] = {
449 SOC_DOUBLE_R_TLV("Master Playback Volume", CS4271_VOLA, CS4271_VOLB,
450 0, 0x7F, 1, cs4271_dac_tlv),
451 SOC_SINGLE("Digital Loopback Switch", CS4271_MODE2, 4, 1, 0),
452 SOC_SINGLE("Soft Ramp Switch", CS4271_DACVOL, 5, 1, 0),
453 SOC_SINGLE("Zero Cross Switch", CS4271_DACVOL, 4, 1, 0),
454 SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0,
455 cs4271_get_deemph, cs4271_put_deemph),
456 SOC_SINGLE("Auto-Mute Switch", CS4271_DACCTL, 7, 1, 0),
457 SOC_SINGLE("Slow Roll Off Filter Switch", CS4271_DACCTL, 6, 1, 0),
458 SOC_SINGLE("Soft Volume Ramp-Up Switch", CS4271_DACCTL, 3, 1, 0),
459 SOC_SINGLE("Soft Ramp-Down Switch", CS4271_DACCTL, 2, 1, 0),
460 SOC_SINGLE("Left Channel Inversion Switch", CS4271_DACCTL, 1, 1, 0),
461 SOC_SINGLE("Right Channel Inversion Switch", CS4271_DACCTL, 0, 1, 0),
462 SOC_DOUBLE("Master Capture Switch", CS4271_ADCCTL, 3, 2, 1, 1),
463 SOC_SINGLE("Dither 16-Bit Data Switch", CS4271_ADCCTL, 5, 1, 0),
464 SOC_DOUBLE("High Pass Filter Switch", CS4271_ADCCTL, 1, 0, 1, 1),
465 SOC_DOUBLE_R("Master Playback Switch", CS4271_VOLA, CS4271_VOLB,
469 static const struct snd_soc_dai_ops cs4271_dai_ops = {
470 .hw_params = cs4271_hw_params,
471 .set_sysclk = cs4271_set_dai_sysclk,
472 .set_fmt = cs4271_set_dai_fmt,
473 .mute_stream = cs4271_mute_stream,
476 static struct snd_soc_dai_driver cs4271_dai = {
477 .name = "cs4271-hifi",
479 .stream_name = "Playback",
482 .rates = CS4271_PCM_RATES,
483 .formats = CS4271_PCM_FORMATS,
486 .stream_name = "Capture",
489 .rates = CS4271_PCM_RATES,
490 .formats = CS4271_PCM_FORMATS,
492 .ops = &cs4271_dai_ops,
493 .symmetric_rates = 1,
496 static int cs4271_reset(struct snd_soc_codec *codec)
498 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
500 if (gpio_is_valid(cs4271->gpio_nreset)) {
501 gpio_set_value(cs4271->gpio_nreset, 0);
503 gpio_set_value(cs4271->gpio_nreset, 1);
511 static int cs4271_soc_suspend(struct snd_soc_codec *codec)
514 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
516 /* Set power-down bit */
517 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
518 CS4271_MODE2_PDN, CS4271_MODE2_PDN);
522 regcache_mark_dirty(cs4271->regmap);
523 regulator_bulk_disable(ARRAY_SIZE(cs4271->supplies), cs4271->supplies);
528 static int cs4271_soc_resume(struct snd_soc_codec *codec)
531 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
533 ret = regulator_bulk_enable(ARRAY_SIZE(cs4271->supplies),
536 dev_err(codec->dev, "Failed to enable regulators: %d\n", ret);
540 /* Do a proper reset after power up */
543 /* Restore codec state */
544 ret = regcache_sync(cs4271->regmap);
548 /* then disable the power-down bit */
549 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
550 CS4271_MODE2_PDN, 0);
557 #define cs4271_soc_suspend NULL
558 #define cs4271_soc_resume NULL
559 #endif /* CONFIG_PM */
562 const struct of_device_id cs4271_dt_ids[] = {
563 { .compatible = "cirrus,cs4271", },
566 MODULE_DEVICE_TABLE(of, cs4271_dt_ids);
567 EXPORT_SYMBOL_GPL(cs4271_dt_ids);
570 static int cs4271_codec_probe(struct snd_soc_codec *codec)
572 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
573 struct cs4271_platform_data *cs4271plat = codec->dev->platform_data;
575 bool amutec_eq_bmutec = false;
578 if (of_match_device(cs4271_dt_ids, codec->dev)) {
579 if (of_get_property(codec->dev->of_node,
580 "cirrus,amutec-eq-bmutec", NULL))
581 amutec_eq_bmutec = true;
583 if (of_get_property(codec->dev->of_node,
584 "cirrus,enable-soft-reset", NULL))
585 cs4271->enable_soft_reset = true;
589 ret = regulator_bulk_enable(ARRAY_SIZE(cs4271->supplies),
592 dev_err(codec->dev, "Failed to enable regulators: %d\n", ret);
597 amutec_eq_bmutec = cs4271plat->amutec_eq_bmutec;
598 cs4271->enable_soft_reset = cs4271plat->enable_soft_reset;
604 ret = regcache_sync(cs4271->regmap);
608 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
609 CS4271_MODE2_PDN | CS4271_MODE2_CPEN,
610 CS4271_MODE2_PDN | CS4271_MODE2_CPEN);
613 ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2,
614 CS4271_MODE2_PDN, 0);
617 /* Power-up sequence requires 85 uS */
620 if (amutec_eq_bmutec)
621 regmap_update_bits(cs4271->regmap, CS4271_MODE2,
622 CS4271_MODE2_MUTECAEQUB,
623 CS4271_MODE2_MUTECAEQUB);
628 static int cs4271_codec_remove(struct snd_soc_codec *codec)
630 struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec);
632 if (gpio_is_valid(cs4271->gpio_nreset))
633 /* Set codec to the reset state */
634 gpio_set_value(cs4271->gpio_nreset, 0);
636 regcache_mark_dirty(cs4271->regmap);
637 regulator_bulk_disable(ARRAY_SIZE(cs4271->supplies), cs4271->supplies);
642 static struct snd_soc_codec_driver soc_codec_dev_cs4271 = {
643 .probe = cs4271_codec_probe,
644 .remove = cs4271_codec_remove,
645 .suspend = cs4271_soc_suspend,
646 .resume = cs4271_soc_resume,
648 .component_driver = {
649 .controls = cs4271_snd_controls,
650 .num_controls = ARRAY_SIZE(cs4271_snd_controls),
651 .dapm_widgets = cs4271_dapm_widgets,
652 .num_dapm_widgets = ARRAY_SIZE(cs4271_dapm_widgets),
653 .dapm_routes = cs4271_dapm_routes,
654 .num_dapm_routes = ARRAY_SIZE(cs4271_dapm_routes),
658 static int cs4271_common_probe(struct device *dev,
659 struct cs4271_private **c)
661 struct cs4271_platform_data *cs4271plat = dev->platform_data;
662 struct cs4271_private *cs4271;
665 cs4271 = devm_kzalloc(dev, sizeof(*cs4271), GFP_KERNEL);
669 if (of_match_device(cs4271_dt_ids, dev))
670 cs4271->gpio_nreset =
671 of_get_named_gpio(dev->of_node, "reset-gpio", 0);
674 cs4271->gpio_nreset = cs4271plat->gpio_nreset;
676 if (gpio_is_valid(cs4271->gpio_nreset)) {
679 ret = devm_gpio_request(dev, cs4271->gpio_nreset,
685 for (i = 0; i < ARRAY_SIZE(supply_names); i++)
686 cs4271->supplies[i].supply = supply_names[i];
688 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(cs4271->supplies),
692 dev_err(dev, "Failed to get regulators: %d\n", ret);
700 const struct regmap_config cs4271_regmap_config = {
701 .max_register = CS4271_LASTREG,
703 .reg_defaults = cs4271_reg_defaults,
704 .num_reg_defaults = ARRAY_SIZE(cs4271_reg_defaults),
705 .cache_type = REGCACHE_RBTREE,
707 .volatile_reg = cs4271_volatile_reg,
709 EXPORT_SYMBOL_GPL(cs4271_regmap_config);
711 int cs4271_probe(struct device *dev, struct regmap *regmap)
713 struct cs4271_private *cs4271;
717 return PTR_ERR(regmap);
719 ret = cs4271_common_probe(dev, &cs4271);
723 dev_set_drvdata(dev, cs4271);
724 cs4271->regmap = regmap;
726 return snd_soc_register_codec(dev, &soc_codec_dev_cs4271, &cs4271_dai,
729 EXPORT_SYMBOL_GPL(cs4271_probe);
731 MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>");
732 MODULE_DESCRIPTION("Cirrus Logic CS4271 ALSA SoC Codec Driver");
733 MODULE_LICENSE("GPL");