4 * ASoC Driver for Cirrus Logic CS42L51 codecs
6 * Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com>
8 * Based on cs4270.c - Copyright (c) Freescale Semiconductor
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 * - Only I2C is support. Not SPI
21 * - master mode *NOT* supported
24 #include <linux/module.h>
25 #include <linux/slab.h>
26 #include <sound/core.h>
27 #include <sound/soc.h>
28 #include <sound/tlv.h>
29 #include <sound/initval.h>
30 #include <sound/pcm_params.h>
31 #include <sound/pcm.h>
32 #include <linux/i2c.h>
33 #include <linux/regmap.h>
37 enum master_slave_mode
{
43 struct cs42l51_private
{
45 unsigned int audio_mode
; /* The mode (I2S or left-justified) */
46 enum master_slave_mode func
;
49 #define CS42L51_FORMATS ( \
50 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
51 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
52 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
53 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
55 static int cs42l51_get_chan_mix(struct snd_kcontrol
*kcontrol
,
56 struct snd_ctl_elem_value
*ucontrol
)
58 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
59 unsigned long value
= snd_soc_read(codec
, CS42L51_PCM_MIXER
)&3;
64 ucontrol
->value
.integer
.value
[0] = 0;
66 /* same value : (L+R)/2 and (R+L)/2 */
69 ucontrol
->value
.integer
.value
[0] = 1;
72 ucontrol
->value
.integer
.value
[0] = 2;
79 #define CHAN_MIX_NORMAL 0x00
80 #define CHAN_MIX_BOTH 0x55
81 #define CHAN_MIX_SWAP 0xFF
83 static int cs42l51_set_chan_mix(struct snd_kcontrol
*kcontrol
,
84 struct snd_ctl_elem_value
*ucontrol
)
86 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
89 switch (ucontrol
->value
.integer
.value
[0]) {
92 val
= CHAN_MIX_NORMAL
;
102 snd_soc_write(codec
, CS42L51_PCM_MIXER
, val
);
107 static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv
, -5150, 50, 0);
108 static const DECLARE_TLV_DB_SCALE(tone_tlv
, -1050, 150, 0);
110 static const DECLARE_TLV_DB_SCALE(aout_tlv
, -10200, 50, 0);
112 static const DECLARE_TLV_DB_SCALE(boost_tlv
, 1600, 1600, 0);
113 static const char *chan_mix
[] = {
119 static SOC_ENUM_SINGLE_EXT_DECL(cs42l51_chan_mix
, chan_mix
);
121 static const struct snd_kcontrol_new cs42l51_snd_controls
[] = {
122 SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
123 CS42L51_PCMA_VOL
, CS42L51_PCMB_VOL
,
124 0, 0x19, 0x7F, adc_pcm_tlv
),
125 SOC_DOUBLE_R("PCM Playback Switch",
126 CS42L51_PCMA_VOL
, CS42L51_PCMB_VOL
, 7, 1, 1),
127 SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
128 CS42L51_AOUTA_VOL
, CS42L51_AOUTB_VOL
,
129 0, 0x34, 0xE4, aout_tlv
),
130 SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
131 CS42L51_ADCA_VOL
, CS42L51_ADCB_VOL
,
132 0, 0x19, 0x7F, adc_pcm_tlv
),
133 SOC_DOUBLE_R("ADC Mixer Switch",
134 CS42L51_ADCA_VOL
, CS42L51_ADCB_VOL
, 7, 1, 1),
135 SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL
, 3, 1, 0),
136 SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL
, 2, 1, 0),
137 SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL
, 1, 1, 0),
138 SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL
, 0, 0, 0),
139 SOC_DOUBLE_TLV("Mic Boost Volume",
140 CS42L51_MIC_CTL
, 0, 1, 1, 0, boost_tlv
),
141 SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL
, 0, 0xf, 1, tone_tlv
),
142 SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL
, 4, 0xf, 1, tone_tlv
),
143 SOC_ENUM_EXT("PCM channel mixer",
145 cs42l51_get_chan_mix
, cs42l51_set_chan_mix
),
149 * to power down, one must:
150 * 1.) Enable the PDN bit
151 * 2.) enable power-down for the select channels
152 * 3.) disable the PDN bit.
154 static int cs42l51_pdn_event(struct snd_soc_dapm_widget
*w
,
155 struct snd_kcontrol
*kcontrol
, int event
)
158 case SND_SOC_DAPM_PRE_PMD
:
159 snd_soc_update_bits(w
->codec
, CS42L51_POWER_CTL1
,
160 CS42L51_POWER_CTL1_PDN
,
161 CS42L51_POWER_CTL1_PDN
);
164 case SND_SOC_DAPM_POST_PMD
:
165 snd_soc_update_bits(w
->codec
, CS42L51_POWER_CTL1
,
166 CS42L51_POWER_CTL1_PDN
, 0);
173 static const char *cs42l51_dac_names
[] = {"Direct PCM",
175 static SOC_ENUM_SINGLE_DECL(cs42l51_dac_mux_enum
,
176 CS42L51_DAC_CTL
, 6, cs42l51_dac_names
);
177 static const struct snd_kcontrol_new cs42l51_dac_mux_controls
=
178 SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum
);
180 static const char *cs42l51_adcl_names
[] = {"AIN1 Left", "AIN2 Left",
181 "MIC Left", "MIC+preamp Left"};
182 static SOC_ENUM_SINGLE_DECL(cs42l51_adcl_mux_enum
,
183 CS42L51_ADC_INPUT
, 4, cs42l51_adcl_names
);
184 static const struct snd_kcontrol_new cs42l51_adcl_mux_controls
=
185 SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum
);
187 static const char *cs42l51_adcr_names
[] = {"AIN1 Right", "AIN2 Right",
188 "MIC Right", "MIC+preamp Right"};
189 static SOC_ENUM_SINGLE_DECL(cs42l51_adcr_mux_enum
,
190 CS42L51_ADC_INPUT
, 6, cs42l51_adcr_names
);
191 static const struct snd_kcontrol_new cs42l51_adcr_mux_controls
=
192 SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum
);
194 static const struct snd_soc_dapm_widget cs42l51_dapm_widgets
[] = {
195 SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL
, 1, 1),
196 SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1
, 3, 1, NULL
, 0,
197 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
198 SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1
, 4, 1, NULL
, 0,
199 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
200 SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
201 CS42L51_POWER_CTL1
, 1, 1,
202 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
203 SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
204 CS42L51_POWER_CTL1
, 2, 1,
205 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
206 SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
207 CS42L51_POWER_CTL1
, 5, 1,
208 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
209 SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
210 CS42L51_POWER_CTL1
, 6, 1,
211 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
214 SND_SOC_DAPM_INPUT("AIN1L"),
215 SND_SOC_DAPM_INPUT("AIN1R"),
216 SND_SOC_DAPM_INPUT("AIN2L"),
217 SND_SOC_DAPM_INPUT("AIN2R"),
218 SND_SOC_DAPM_INPUT("MICL"),
219 SND_SOC_DAPM_INPUT("MICR"),
221 SND_SOC_DAPM_MIXER("Mic Preamp Left",
222 CS42L51_MIC_POWER_CTL
, 2, 1, NULL
, 0),
223 SND_SOC_DAPM_MIXER("Mic Preamp Right",
224 CS42L51_MIC_POWER_CTL
, 3, 1, NULL
, 0),
227 SND_SOC_DAPM_OUTPUT("HPL"),
228 SND_SOC_DAPM_OUTPUT("HPR"),
231 SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM
, 0, 0,
232 &cs42l51_dac_mux_controls
),
233 SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM
, 0, 0,
234 &cs42l51_adcl_mux_controls
),
235 SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM
, 0, 0,
236 &cs42l51_adcr_mux_controls
),
239 static const struct snd_soc_dapm_route cs42l51_routes
[] = {
240 {"HPL", NULL
, "Left DAC"},
241 {"HPR", NULL
, "Right DAC"},
243 {"Left ADC", NULL
, "Left PGA"},
244 {"Right ADC", NULL
, "Right PGA"},
246 {"Mic Preamp Left", NULL
, "MICL"},
247 {"Mic Preamp Right", NULL
, "MICR"},
249 {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
250 {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
251 {"PGA-ADC Mux Left", "MIC Left", "MICL" },
252 {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
253 {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
254 {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
255 {"PGA-ADC Mux Right", "MIC Right", "MICR" },
256 {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
258 {"Left PGA", NULL
, "PGA-ADC Mux Left"},
259 {"Right PGA", NULL
, "PGA-ADC Mux Right"},
262 static int cs42l51_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
265 struct snd_soc_codec
*codec
= codec_dai
->codec
;
266 struct cs42l51_private
*cs42l51
= snd_soc_codec_get_drvdata(codec
);
268 switch (format
& SND_SOC_DAIFMT_FORMAT_MASK
) {
269 case SND_SOC_DAIFMT_I2S
:
270 case SND_SOC_DAIFMT_LEFT_J
:
271 case SND_SOC_DAIFMT_RIGHT_J
:
272 cs42l51
->audio_mode
= format
& SND_SOC_DAIFMT_FORMAT_MASK
;
275 dev_err(codec
->dev
, "invalid DAI format\n");
279 switch (format
& SND_SOC_DAIFMT_MASTER_MASK
) {
280 case SND_SOC_DAIFMT_CBM_CFM
:
281 cs42l51
->func
= MODE_MASTER
;
283 case SND_SOC_DAIFMT_CBS_CFS
:
284 cs42l51
->func
= MODE_SLAVE_AUTO
;
287 dev_err(codec
->dev
, "Unknown master/slave configuration\n");
294 struct cs42l51_ratios
{
296 unsigned char speed_mode
;
300 static struct cs42l51_ratios slave_ratios
[] = {
301 { 512, CS42L51_QSM_MODE
, 0 }, { 768, CS42L51_QSM_MODE
, 0 },
302 { 1024, CS42L51_QSM_MODE
, 0 }, { 1536, CS42L51_QSM_MODE
, 0 },
303 { 2048, CS42L51_QSM_MODE
, 0 }, { 3072, CS42L51_QSM_MODE
, 0 },
304 { 256, CS42L51_HSM_MODE
, 0 }, { 384, CS42L51_HSM_MODE
, 0 },
305 { 512, CS42L51_HSM_MODE
, 0 }, { 768, CS42L51_HSM_MODE
, 0 },
306 { 1024, CS42L51_HSM_MODE
, 0 }, { 1536, CS42L51_HSM_MODE
, 0 },
307 { 128, CS42L51_SSM_MODE
, 0 }, { 192, CS42L51_SSM_MODE
, 0 },
308 { 256, CS42L51_SSM_MODE
, 0 }, { 384, CS42L51_SSM_MODE
, 0 },
309 { 512, CS42L51_SSM_MODE
, 0 }, { 768, CS42L51_SSM_MODE
, 0 },
310 { 128, CS42L51_DSM_MODE
, 0 }, { 192, CS42L51_DSM_MODE
, 0 },
311 { 256, CS42L51_DSM_MODE
, 0 }, { 384, CS42L51_DSM_MODE
, 0 },
314 static struct cs42l51_ratios slave_auto_ratios
[] = {
315 { 1024, CS42L51_QSM_MODE
, 0 }, { 1536, CS42L51_QSM_MODE
, 0 },
316 { 2048, CS42L51_QSM_MODE
, 1 }, { 3072, CS42L51_QSM_MODE
, 1 },
317 { 512, CS42L51_HSM_MODE
, 0 }, { 768, CS42L51_HSM_MODE
, 0 },
318 { 1024, CS42L51_HSM_MODE
, 1 }, { 1536, CS42L51_HSM_MODE
, 1 },
319 { 256, CS42L51_SSM_MODE
, 0 }, { 384, CS42L51_SSM_MODE
, 0 },
320 { 512, CS42L51_SSM_MODE
, 1 }, { 768, CS42L51_SSM_MODE
, 1 },
321 { 128, CS42L51_DSM_MODE
, 0 }, { 192, CS42L51_DSM_MODE
, 0 },
322 { 256, CS42L51_DSM_MODE
, 1 }, { 384, CS42L51_DSM_MODE
, 1 },
325 static int cs42l51_set_dai_sysclk(struct snd_soc_dai
*codec_dai
,
326 int clk_id
, unsigned int freq
, int dir
)
328 struct snd_soc_codec
*codec
= codec_dai
->codec
;
329 struct cs42l51_private
*cs42l51
= snd_soc_codec_get_drvdata(codec
);
331 cs42l51
->mclk
= freq
;
335 static int cs42l51_hw_params(struct snd_pcm_substream
*substream
,
336 struct snd_pcm_hw_params
*params
,
337 struct snd_soc_dai
*dai
)
339 struct snd_soc_codec
*codec
= dai
->codec
;
340 struct cs42l51_private
*cs42l51
= snd_soc_codec_get_drvdata(codec
);
345 struct cs42l51_ratios
*ratios
= NULL
;
347 int intf_ctl
, power_ctl
, fmt
;
349 switch (cs42l51
->func
) {
353 ratios
= slave_ratios
;
354 nr_ratios
= ARRAY_SIZE(slave_ratios
);
356 case MODE_SLAVE_AUTO
:
357 ratios
= slave_auto_ratios
;
358 nr_ratios
= ARRAY_SIZE(slave_auto_ratios
);
362 /* Figure out which MCLK/LRCK ratio to use */
363 rate
= params_rate(params
); /* Sampling rate, in Hz */
364 ratio
= cs42l51
->mclk
/ rate
; /* MCLK/LRCK ratio */
365 for (i
= 0; i
< nr_ratios
; i
++) {
366 if (ratios
[i
].ratio
== ratio
)
370 if (i
== nr_ratios
) {
371 /* We did not find a matching ratio */
372 dev_err(codec
->dev
, "could not find matching ratio\n");
376 intf_ctl
= snd_soc_read(codec
, CS42L51_INTF_CTL
);
377 power_ctl
= snd_soc_read(codec
, CS42L51_MIC_POWER_CTL
);
379 intf_ctl
&= ~(CS42L51_INTF_CTL_MASTER
| CS42L51_INTF_CTL_ADC_I2S
380 | CS42L51_INTF_CTL_DAC_FORMAT(7));
381 power_ctl
&= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
382 | CS42L51_MIC_POWER_CTL_MCLK_DIV2
);
384 switch (cs42l51
->func
) {
386 intf_ctl
|= CS42L51_INTF_CTL_MASTER
;
387 power_ctl
|= CS42L51_MIC_POWER_CTL_SPEED(ratios
[i
].speed_mode
);
390 power_ctl
|= CS42L51_MIC_POWER_CTL_SPEED(ratios
[i
].speed_mode
);
392 case MODE_SLAVE_AUTO
:
393 power_ctl
|= CS42L51_MIC_POWER_CTL_AUTO
;
397 switch (cs42l51
->audio_mode
) {
398 case SND_SOC_DAIFMT_I2S
:
399 intf_ctl
|= CS42L51_INTF_CTL_ADC_I2S
;
400 intf_ctl
|= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S
);
402 case SND_SOC_DAIFMT_LEFT_J
:
403 intf_ctl
|= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24
);
405 case SND_SOC_DAIFMT_RIGHT_J
:
406 switch (params_width(params
)) {
408 fmt
= CS42L51_DAC_DIF_RJ16
;
411 fmt
= CS42L51_DAC_DIF_RJ18
;
414 fmt
= CS42L51_DAC_DIF_RJ20
;
417 fmt
= CS42L51_DAC_DIF_RJ24
;
420 dev_err(codec
->dev
, "unknown format\n");
423 intf_ctl
|= CS42L51_INTF_CTL_DAC_FORMAT(fmt
);
426 dev_err(codec
->dev
, "unknown format\n");
431 power_ctl
|= CS42L51_MIC_POWER_CTL_MCLK_DIV2
;
433 ret
= snd_soc_write(codec
, CS42L51_INTF_CTL
, intf_ctl
);
437 ret
= snd_soc_write(codec
, CS42L51_MIC_POWER_CTL
, power_ctl
);
444 static int cs42l51_dai_mute(struct snd_soc_dai
*dai
, int mute
)
446 struct snd_soc_codec
*codec
= dai
->codec
;
448 int mask
= CS42L51_DAC_OUT_CTL_DACA_MUTE
|CS42L51_DAC_OUT_CTL_DACB_MUTE
;
450 reg
= snd_soc_read(codec
, CS42L51_DAC_OUT_CTL
);
457 return snd_soc_write(codec
, CS42L51_DAC_OUT_CTL
, reg
);
460 static const struct snd_soc_dai_ops cs42l51_dai_ops
= {
461 .hw_params
= cs42l51_hw_params
,
462 .set_sysclk
= cs42l51_set_dai_sysclk
,
463 .set_fmt
= cs42l51_set_dai_fmt
,
464 .digital_mute
= cs42l51_dai_mute
,
467 static struct snd_soc_dai_driver cs42l51_dai
= {
468 .name
= "cs42l51-hifi",
470 .stream_name
= "Playback",
473 .rates
= SNDRV_PCM_RATE_8000_96000
,
474 .formats
= CS42L51_FORMATS
,
477 .stream_name
= "Capture",
480 .rates
= SNDRV_PCM_RATE_8000_96000
,
481 .formats
= CS42L51_FORMATS
,
483 .ops
= &cs42l51_dai_ops
,
486 static int cs42l51_probe(struct snd_soc_codec
*codec
)
492 * - Use signal processor
494 * - vol changes immediate
497 reg
= CS42L51_DAC_CTL_DATA_SEL(1)
498 | CS42L51_DAC_CTL_AMUTE
| CS42L51_DAC_CTL_DACSZ(0);
499 ret
= snd_soc_write(codec
, CS42L51_DAC_CTL
, reg
);
506 static struct snd_soc_codec_driver soc_codec_device_cs42l51
= {
507 .probe
= cs42l51_probe
,
509 .controls
= cs42l51_snd_controls
,
510 .num_controls
= ARRAY_SIZE(cs42l51_snd_controls
),
511 .dapm_widgets
= cs42l51_dapm_widgets
,
512 .num_dapm_widgets
= ARRAY_SIZE(cs42l51_dapm_widgets
),
513 .dapm_routes
= cs42l51_routes
,
514 .num_dapm_routes
= ARRAY_SIZE(cs42l51_routes
),
517 static const struct regmap_config cs42l51_regmap
= {
521 .max_register
= CS42L51_CHARGE_FREQ
,
522 .cache_type
= REGCACHE_RBTREE
,
525 static int cs42l51_i2c_probe(struct i2c_client
*i2c_client
,
526 const struct i2c_device_id
*id
)
528 struct cs42l51_private
*cs42l51
;
529 struct regmap
*regmap
;
533 regmap
= devm_regmap_init_i2c(i2c_client
, &cs42l51_regmap
);
534 if (IS_ERR(regmap
)) {
535 ret
= PTR_ERR(regmap
);
536 dev_err(&i2c_client
->dev
, "Failed to create regmap: %d\n",
541 /* Verify that we have a CS42L51 */
542 ret
= regmap_read(regmap
, CS42L51_CHIP_REV_ID
, &val
);
544 dev_err(&i2c_client
->dev
, "failed to read I2C\n");
548 if ((val
!= CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID
, CS42L51_CHIP_REV_A
)) &&
549 (val
!= CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID
, CS42L51_CHIP_REV_B
))) {
550 dev_err(&i2c_client
->dev
, "Invalid chip id: %x\n", val
);
555 dev_info(&i2c_client
->dev
, "found device cs42l51 rev %d\n",
558 cs42l51
= devm_kzalloc(&i2c_client
->dev
, sizeof(struct cs42l51_private
),
563 i2c_set_clientdata(i2c_client
, cs42l51
);
565 ret
= snd_soc_register_codec(&i2c_client
->dev
,
566 &soc_codec_device_cs42l51
, &cs42l51_dai
, 1);
571 static int cs42l51_i2c_remove(struct i2c_client
*client
)
573 snd_soc_unregister_codec(&client
->dev
);
577 static const struct i2c_device_id cs42l51_id
[] = {
581 MODULE_DEVICE_TABLE(i2c
, cs42l51_id
);
583 static const struct of_device_id cs42l51_of_match
[] = {
584 { .compatible
= "cirrus,cs42l51", },
587 MODULE_DEVICE_TABLE(of
, cs42l51_of_match
);
589 static struct i2c_driver cs42l51_i2c_driver
= {
591 .name
= "cs42l51-codec",
592 .owner
= THIS_MODULE
,
593 .of_match_table
= cs42l51_of_match
,
595 .id_table
= cs42l51_id
,
596 .probe
= cs42l51_i2c_probe
,
597 .remove
= cs42l51_i2c_remove
,
600 module_i2c_driver(cs42l51_i2c_driver
);
602 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
603 MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
604 MODULE_LICENSE("GPL");