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>
36 enum master_slave_mode
{
42 struct cs42l51_private
{
43 enum snd_soc_control_type control_type
;
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_fill_cache(struct snd_soc_codec
*codec
)
57 u8
*cache
= codec
->reg_cache
+ 1;
58 struct i2c_client
*i2c_client
= to_i2c_client(codec
->dev
);
61 length
= i2c_smbus_read_i2c_block_data(i2c_client
,
62 CS42L51_FIRSTREG
| 0x80, CS42L51_NUMREGS
, cache
);
63 if (length
!= CS42L51_NUMREGS
) {
64 dev_err(&i2c_client
->dev
,
65 "I2C read failure, addr=0x%x (ret=%d vs %d)\n",
66 i2c_client
->addr
, length
, CS42L51_NUMREGS
);
73 static int cs42l51_get_chan_mix(struct snd_kcontrol
*kcontrol
,
74 struct snd_ctl_elem_value
*ucontrol
)
76 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
77 unsigned long value
= snd_soc_read(codec
, CS42L51_PCM_MIXER
)&3;
82 ucontrol
->value
.integer
.value
[0] = 0;
84 /* same value : (L+R)/2 and (R+L)/2 */
87 ucontrol
->value
.integer
.value
[0] = 1;
90 ucontrol
->value
.integer
.value
[0] = 2;
97 #define CHAN_MIX_NORMAL 0x00
98 #define CHAN_MIX_BOTH 0x55
99 #define CHAN_MIX_SWAP 0xFF
101 static int cs42l51_set_chan_mix(struct snd_kcontrol
*kcontrol
,
102 struct snd_ctl_elem_value
*ucontrol
)
104 struct snd_soc_codec
*codec
= snd_kcontrol_chip(kcontrol
);
107 switch (ucontrol
->value
.integer
.value
[0]) {
110 val
= CHAN_MIX_NORMAL
;
120 snd_soc_write(codec
, CS42L51_PCM_MIXER
, val
);
125 static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv
, -5150, 50, 0);
126 static const DECLARE_TLV_DB_SCALE(tone_tlv
, -1050, 150, 0);
127 /* This is a lie. after -102 db, it stays at -102 */
128 /* maybe a range would be better */
129 static const DECLARE_TLV_DB_SCALE(aout_tlv
, -11550, 50, 0);
131 static const DECLARE_TLV_DB_SCALE(boost_tlv
, 1600, 1600, 0);
132 static const char *chan_mix
[] = {
138 static const struct soc_enum cs42l51_chan_mix
=
139 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix
), chan_mix
);
141 static const struct snd_kcontrol_new cs42l51_snd_controls
[] = {
142 SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
143 CS42L51_PCMA_VOL
, CS42L51_PCMB_VOL
,
144 7, 0xffffff99, 0x18, adc_pcm_tlv
),
145 SOC_DOUBLE_R("PCM Playback Switch",
146 CS42L51_PCMA_VOL
, CS42L51_PCMB_VOL
, 7, 1, 1),
147 SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
148 CS42L51_AOUTA_VOL
, CS42L51_AOUTB_VOL
,
149 8, 0xffffff19, 0x18, aout_tlv
),
150 SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
151 CS42L51_ADCA_VOL
, CS42L51_ADCB_VOL
,
152 7, 0xffffff99, 0x18, adc_pcm_tlv
),
153 SOC_DOUBLE_R("ADC Mixer Switch",
154 CS42L51_ADCA_VOL
, CS42L51_ADCB_VOL
, 7, 1, 1),
155 SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL
, 3, 1, 0),
156 SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL
, 2, 1, 0),
157 SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL
, 1, 1, 0),
158 SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL
, 0, 0, 0),
159 SOC_DOUBLE_TLV("Mic Boost Volume",
160 CS42L51_MIC_CTL
, 0, 1, 1, 0, boost_tlv
),
161 SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL
, 0, 0xf, 1, tone_tlv
),
162 SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL
, 4, 0xf, 1, tone_tlv
),
163 SOC_ENUM_EXT("PCM channel mixer",
165 cs42l51_get_chan_mix
, cs42l51_set_chan_mix
),
169 * to power down, one must:
170 * 1.) Enable the PDN bit
171 * 2.) enable power-down for the select channels
172 * 3.) disable the PDN bit.
174 static int cs42l51_pdn_event(struct snd_soc_dapm_widget
*w
,
175 struct snd_kcontrol
*kcontrol
, int event
)
178 case SND_SOC_DAPM_PRE_PMD
:
179 snd_soc_update_bits(w
->codec
, CS42L51_POWER_CTL1
,
180 CS42L51_POWER_CTL1_PDN
,
181 CS42L51_POWER_CTL1_PDN
);
184 case SND_SOC_DAPM_POST_PMD
:
185 snd_soc_update_bits(w
->codec
, CS42L51_POWER_CTL1
,
186 CS42L51_POWER_CTL1_PDN
, 0);
193 static const char *cs42l51_dac_names
[] = {"Direct PCM",
195 static const struct soc_enum cs42l51_dac_mux_enum
=
196 SOC_ENUM_SINGLE(CS42L51_DAC_CTL
, 6, 3, cs42l51_dac_names
);
197 static const struct snd_kcontrol_new cs42l51_dac_mux_controls
=
198 SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum
);
200 static const char *cs42l51_adcl_names
[] = {"AIN1 Left", "AIN2 Left",
201 "MIC Left", "MIC+preamp Left"};
202 static const struct soc_enum cs42l51_adcl_mux_enum
=
203 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT
, 4, 4, cs42l51_adcl_names
);
204 static const struct snd_kcontrol_new cs42l51_adcl_mux_controls
=
205 SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum
);
207 static const char *cs42l51_adcr_names
[] = {"AIN1 Right", "AIN2 Right",
208 "MIC Right", "MIC+preamp Right"};
209 static const struct soc_enum cs42l51_adcr_mux_enum
=
210 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT
, 6, 4, cs42l51_adcr_names
);
211 static const struct snd_kcontrol_new cs42l51_adcr_mux_controls
=
212 SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum
);
214 static const struct snd_soc_dapm_widget cs42l51_dapm_widgets
[] = {
215 SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL
, 1, 1),
216 SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1
, 3, 1, NULL
, 0,
217 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
218 SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1
, 4, 1, NULL
, 0,
219 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
220 SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
221 CS42L51_POWER_CTL1
, 1, 1,
222 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
223 SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
224 CS42L51_POWER_CTL1
, 2, 1,
225 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
226 SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
227 CS42L51_POWER_CTL1
, 5, 1,
228 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
229 SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
230 CS42L51_POWER_CTL1
, 6, 1,
231 cs42l51_pdn_event
, SND_SOC_DAPM_PRE_POST_PMD
),
234 SND_SOC_DAPM_INPUT("AIN1L"),
235 SND_SOC_DAPM_INPUT("AIN1R"),
236 SND_SOC_DAPM_INPUT("AIN2L"),
237 SND_SOC_DAPM_INPUT("AIN2R"),
238 SND_SOC_DAPM_INPUT("MICL"),
239 SND_SOC_DAPM_INPUT("MICR"),
241 SND_SOC_DAPM_MIXER("Mic Preamp Left",
242 CS42L51_MIC_POWER_CTL
, 2, 1, NULL
, 0),
243 SND_SOC_DAPM_MIXER("Mic Preamp Right",
244 CS42L51_MIC_POWER_CTL
, 3, 1, NULL
, 0),
247 SND_SOC_DAPM_OUTPUT("HPL"),
248 SND_SOC_DAPM_OUTPUT("HPR"),
251 SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM
, 0, 0,
252 &cs42l51_dac_mux_controls
),
253 SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM
, 0, 0,
254 &cs42l51_adcl_mux_controls
),
255 SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM
, 0, 0,
256 &cs42l51_adcr_mux_controls
),
259 static const struct snd_soc_dapm_route cs42l51_routes
[] = {
260 {"HPL", NULL
, "Left DAC"},
261 {"HPR", NULL
, "Right DAC"},
263 {"Left ADC", NULL
, "Left PGA"},
264 {"Right ADC", NULL
, "Right PGA"},
266 {"Mic Preamp Left", NULL
, "MICL"},
267 {"Mic Preamp Right", NULL
, "MICR"},
269 {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
270 {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
271 {"PGA-ADC Mux Left", "MIC Left", "MICL" },
272 {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
273 {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
274 {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
275 {"PGA-ADC Mux Right", "MIC Right", "MICR" },
276 {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
278 {"Left PGA", NULL
, "PGA-ADC Mux Left"},
279 {"Right PGA", NULL
, "PGA-ADC Mux Right"},
282 static int cs42l51_set_dai_fmt(struct snd_soc_dai
*codec_dai
,
285 struct snd_soc_codec
*codec
= codec_dai
->codec
;
286 struct cs42l51_private
*cs42l51
= snd_soc_codec_get_drvdata(codec
);
288 switch (format
& SND_SOC_DAIFMT_FORMAT_MASK
) {
289 case SND_SOC_DAIFMT_I2S
:
290 case SND_SOC_DAIFMT_LEFT_J
:
291 case SND_SOC_DAIFMT_RIGHT_J
:
292 cs42l51
->audio_mode
= format
& SND_SOC_DAIFMT_FORMAT_MASK
;
295 dev_err(codec
->dev
, "invalid DAI format\n");
299 switch (format
& SND_SOC_DAIFMT_MASTER_MASK
) {
300 case SND_SOC_DAIFMT_CBM_CFM
:
301 cs42l51
->func
= MODE_MASTER
;
303 case SND_SOC_DAIFMT_CBS_CFS
:
304 cs42l51
->func
= MODE_SLAVE_AUTO
;
307 dev_err(codec
->dev
, "Unknown master/slave configuration\n");
314 struct cs42l51_ratios
{
316 unsigned char speed_mode
;
320 static struct cs42l51_ratios slave_ratios
[] = {
321 { 512, CS42L51_QSM_MODE
, 0 }, { 768, CS42L51_QSM_MODE
, 0 },
322 { 1024, CS42L51_QSM_MODE
, 0 }, { 1536, CS42L51_QSM_MODE
, 0 },
323 { 2048, CS42L51_QSM_MODE
, 0 }, { 3072, CS42L51_QSM_MODE
, 0 },
324 { 256, CS42L51_HSM_MODE
, 0 }, { 384, CS42L51_HSM_MODE
, 0 },
325 { 512, CS42L51_HSM_MODE
, 0 }, { 768, CS42L51_HSM_MODE
, 0 },
326 { 1024, CS42L51_HSM_MODE
, 0 }, { 1536, CS42L51_HSM_MODE
, 0 },
327 { 128, CS42L51_SSM_MODE
, 0 }, { 192, CS42L51_SSM_MODE
, 0 },
328 { 256, CS42L51_SSM_MODE
, 0 }, { 384, CS42L51_SSM_MODE
, 0 },
329 { 512, CS42L51_SSM_MODE
, 0 }, { 768, CS42L51_SSM_MODE
, 0 },
330 { 128, CS42L51_DSM_MODE
, 0 }, { 192, CS42L51_DSM_MODE
, 0 },
331 { 256, CS42L51_DSM_MODE
, 0 }, { 384, CS42L51_DSM_MODE
, 0 },
334 static struct cs42l51_ratios slave_auto_ratios
[] = {
335 { 1024, CS42L51_QSM_MODE
, 0 }, { 1536, CS42L51_QSM_MODE
, 0 },
336 { 2048, CS42L51_QSM_MODE
, 1 }, { 3072, CS42L51_QSM_MODE
, 1 },
337 { 512, CS42L51_HSM_MODE
, 0 }, { 768, CS42L51_HSM_MODE
, 0 },
338 { 1024, CS42L51_HSM_MODE
, 1 }, { 1536, CS42L51_HSM_MODE
, 1 },
339 { 256, CS42L51_SSM_MODE
, 0 }, { 384, CS42L51_SSM_MODE
, 0 },
340 { 512, CS42L51_SSM_MODE
, 1 }, { 768, CS42L51_SSM_MODE
, 1 },
341 { 128, CS42L51_DSM_MODE
, 0 }, { 192, CS42L51_DSM_MODE
, 0 },
342 { 256, CS42L51_DSM_MODE
, 1 }, { 384, CS42L51_DSM_MODE
, 1 },
345 static int cs42l51_set_dai_sysclk(struct snd_soc_dai
*codec_dai
,
346 int clk_id
, unsigned int freq
, int dir
)
348 struct snd_soc_codec
*codec
= codec_dai
->codec
;
349 struct cs42l51_private
*cs42l51
= snd_soc_codec_get_drvdata(codec
);
351 cs42l51
->mclk
= freq
;
355 static int cs42l51_hw_params(struct snd_pcm_substream
*substream
,
356 struct snd_pcm_hw_params
*params
,
357 struct snd_soc_dai
*dai
)
359 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
360 struct snd_soc_codec
*codec
= rtd
->codec
;
361 struct cs42l51_private
*cs42l51
= snd_soc_codec_get_drvdata(codec
);
366 struct cs42l51_ratios
*ratios
= NULL
;
368 int intf_ctl
, power_ctl
, fmt
;
370 switch (cs42l51
->func
) {
374 ratios
= slave_ratios
;
375 nr_ratios
= ARRAY_SIZE(slave_ratios
);
377 case MODE_SLAVE_AUTO
:
378 ratios
= slave_auto_ratios
;
379 nr_ratios
= ARRAY_SIZE(slave_auto_ratios
);
383 /* Figure out which MCLK/LRCK ratio to use */
384 rate
= params_rate(params
); /* Sampling rate, in Hz */
385 ratio
= cs42l51
->mclk
/ rate
; /* MCLK/LRCK ratio */
386 for (i
= 0; i
< nr_ratios
; i
++) {
387 if (ratios
[i
].ratio
== ratio
)
391 if (i
== nr_ratios
) {
392 /* We did not find a matching ratio */
393 dev_err(codec
->dev
, "could not find matching ratio\n");
397 intf_ctl
= snd_soc_read(codec
, CS42L51_INTF_CTL
);
398 power_ctl
= snd_soc_read(codec
, CS42L51_MIC_POWER_CTL
);
400 intf_ctl
&= ~(CS42L51_INTF_CTL_MASTER
| CS42L51_INTF_CTL_ADC_I2S
401 | CS42L51_INTF_CTL_DAC_FORMAT(7));
402 power_ctl
&= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
403 | CS42L51_MIC_POWER_CTL_MCLK_DIV2
);
405 switch (cs42l51
->func
) {
407 intf_ctl
|= CS42L51_INTF_CTL_MASTER
;
408 power_ctl
|= CS42L51_MIC_POWER_CTL_SPEED(ratios
[i
].speed_mode
);
411 power_ctl
|= CS42L51_MIC_POWER_CTL_SPEED(ratios
[i
].speed_mode
);
413 case MODE_SLAVE_AUTO
:
414 power_ctl
|= CS42L51_MIC_POWER_CTL_AUTO
;
418 switch (cs42l51
->audio_mode
) {
419 case SND_SOC_DAIFMT_I2S
:
420 intf_ctl
|= CS42L51_INTF_CTL_ADC_I2S
;
421 intf_ctl
|= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S
);
423 case SND_SOC_DAIFMT_LEFT_J
:
424 intf_ctl
|= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24
);
426 case SND_SOC_DAIFMT_RIGHT_J
:
427 switch (params_format(params
)) {
428 case SNDRV_PCM_FORMAT_S16_LE
:
429 case SNDRV_PCM_FORMAT_S16_BE
:
430 fmt
= CS42L51_DAC_DIF_RJ16
;
432 case SNDRV_PCM_FORMAT_S18_3LE
:
433 case SNDRV_PCM_FORMAT_S18_3BE
:
434 fmt
= CS42L51_DAC_DIF_RJ18
;
436 case SNDRV_PCM_FORMAT_S20_3LE
:
437 case SNDRV_PCM_FORMAT_S20_3BE
:
438 fmt
= CS42L51_DAC_DIF_RJ20
;
440 case SNDRV_PCM_FORMAT_S24_LE
:
441 case SNDRV_PCM_FORMAT_S24_BE
:
442 fmt
= CS42L51_DAC_DIF_RJ24
;
445 dev_err(codec
->dev
, "unknown format\n");
448 intf_ctl
|= CS42L51_INTF_CTL_DAC_FORMAT(fmt
);
451 dev_err(codec
->dev
, "unknown format\n");
456 power_ctl
|= CS42L51_MIC_POWER_CTL_MCLK_DIV2
;
458 ret
= snd_soc_write(codec
, CS42L51_INTF_CTL
, intf_ctl
);
462 ret
= snd_soc_write(codec
, CS42L51_MIC_POWER_CTL
, power_ctl
);
469 static int cs42l51_dai_mute(struct snd_soc_dai
*dai
, int mute
)
471 struct snd_soc_codec
*codec
= dai
->codec
;
473 int mask
= CS42L51_DAC_OUT_CTL_DACA_MUTE
|CS42L51_DAC_OUT_CTL_DACB_MUTE
;
475 reg
= snd_soc_read(codec
, CS42L51_DAC_OUT_CTL
);
482 return snd_soc_write(codec
, CS42L51_DAC_OUT_CTL
, reg
);
485 static const struct snd_soc_dai_ops cs42l51_dai_ops
= {
486 .hw_params
= cs42l51_hw_params
,
487 .set_sysclk
= cs42l51_set_dai_sysclk
,
488 .set_fmt
= cs42l51_set_dai_fmt
,
489 .digital_mute
= cs42l51_dai_mute
,
492 static struct snd_soc_dai_driver cs42l51_dai
= {
493 .name
= "cs42l51-hifi",
495 .stream_name
= "Playback",
498 .rates
= SNDRV_PCM_RATE_8000_96000
,
499 .formats
= CS42L51_FORMATS
,
502 .stream_name
= "Capture",
505 .rates
= SNDRV_PCM_RATE_8000_96000
,
506 .formats
= CS42L51_FORMATS
,
508 .ops
= &cs42l51_dai_ops
,
511 static int cs42l51_probe(struct snd_soc_codec
*codec
)
513 struct cs42l51_private
*cs42l51
= snd_soc_codec_get_drvdata(codec
);
516 ret
= cs42l51_fill_cache(codec
);
518 dev_err(codec
->dev
, "failed to fill register cache\n");
522 ret
= snd_soc_codec_set_cache_io(codec
, 8, 8, cs42l51
->control_type
);
524 dev_err(codec
->dev
, "Failed to set cache I/O: %d\n", ret
);
530 * - Use signal processor
532 * - vol changes immediate
535 reg
= CS42L51_DAC_CTL_DATA_SEL(1)
536 | CS42L51_DAC_CTL_AMUTE
| CS42L51_DAC_CTL_DACSZ(0);
537 ret
= snd_soc_write(codec
, CS42L51_DAC_CTL
, reg
);
544 static struct snd_soc_codec_driver soc_codec_device_cs42l51
= {
545 .probe
= cs42l51_probe
,
546 .reg_cache_size
= CS42L51_NUMREGS
+ 1,
547 .reg_word_size
= sizeof(u8
),
549 .controls
= cs42l51_snd_controls
,
550 .num_controls
= ARRAY_SIZE(cs42l51_snd_controls
),
551 .dapm_widgets
= cs42l51_dapm_widgets
,
552 .num_dapm_widgets
= ARRAY_SIZE(cs42l51_dapm_widgets
),
553 .dapm_routes
= cs42l51_routes
,
554 .num_dapm_routes
= ARRAY_SIZE(cs42l51_routes
),
557 static int cs42l51_i2c_probe(struct i2c_client
*i2c_client
,
558 const struct i2c_device_id
*id
)
560 struct cs42l51_private
*cs42l51
;
563 /* Verify that we have a CS42L51 */
564 ret
= i2c_smbus_read_byte_data(i2c_client
, CS42L51_CHIP_REV_ID
);
566 dev_err(&i2c_client
->dev
, "failed to read I2C\n");
570 if ((ret
!= CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID
, CS42L51_CHIP_REV_A
)) &&
571 (ret
!= CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID
, CS42L51_CHIP_REV_B
))) {
572 dev_err(&i2c_client
->dev
, "Invalid chip id\n");
577 dev_info(&i2c_client
->dev
, "found device cs42l51 rev %d\n",
580 cs42l51
= devm_kzalloc(&i2c_client
->dev
, sizeof(struct cs42l51_private
),
583 dev_err(&i2c_client
->dev
, "could not allocate codec\n");
587 i2c_set_clientdata(i2c_client
, cs42l51
);
588 cs42l51
->control_type
= SND_SOC_I2C
;
590 ret
= snd_soc_register_codec(&i2c_client
->dev
,
591 &soc_codec_device_cs42l51
, &cs42l51_dai
, 1);
596 static int cs42l51_i2c_remove(struct i2c_client
*client
)
598 snd_soc_unregister_codec(&client
->dev
);
602 static const struct i2c_device_id cs42l51_id
[] = {
606 MODULE_DEVICE_TABLE(i2c
, cs42l51_id
);
608 static struct i2c_driver cs42l51_i2c_driver
= {
610 .name
= "cs42l51-codec",
611 .owner
= THIS_MODULE
,
613 .id_table
= cs42l51_id
,
614 .probe
= cs42l51_i2c_probe
,
615 .remove
= cs42l51_i2c_remove
,
618 static int __init
cs42l51_init(void)
622 ret
= i2c_add_driver(&cs42l51_i2c_driver
);
624 printk(KERN_ERR
"%s: can't add i2c driver\n", __func__
);
629 module_init(cs42l51_init
);
631 static void __exit
cs42l51_exit(void)
633 i2c_del_driver(&cs42l51_i2c_driver
);
635 module_exit(cs42l51_exit
);
637 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
638 MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
639 MODULE_LICENSE("GPL");