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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
[deliverable/linux.git] / sound / soc / codecs / cs42l51.c
CommitLineData
72ed5a8c 1/*
2 * cs42l51.c
3 *
4 * ASoC Driver for Cirrus Logic CS42L51 codecs
5 *
6 * Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com>
7 *
8 * Based on cs4270.c - Copyright (c) Freescale Semiconductor
9 *
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.
13 *
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.
18 *
19 * For now:
20 * - Only I2C is support. Not SPI
21 * - master mode *NOT* supported
22 */
23
24#include <linux/module.h>
25#include <linux/platform_device.h>
26#include <linux/slab.h>
27#include <sound/core.h>
28#include <sound/soc.h>
29#include <sound/soc-dapm.h>
30#include <sound/tlv.h>
31#include <sound/initval.h>
32#include <sound/pcm_params.h>
33#include <sound/pcm.h>
34#include <linux/i2c.h>
35
36#include "cs42l51.h"
37
38enum master_slave_mode {
39 MODE_SLAVE,
40 MODE_SLAVE_AUTO,
41 MODE_MASTER,
42};
43
44struct cs42l51_private {
f0fba2ad
LG		 45 enum snd_soc_control_type control_type;
46 void *control_data;
72ed5a8c 47 unsigned int mclk;
48 unsigned int audio_mode; /* The mode (I2S or left-justified) */
49 enum master_slave_mode func;
72ed5a8c 50 u8 reg_cache[CS42L51_NUMREGS];
51};
52
72ed5a8c 53#define CS42L51_FORMATS ( \
54 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
55 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
56 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
57 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
58
59static int cs42l51_fill_cache(struct snd_soc_codec *codec)
60{
61 u8 *cache = codec->reg_cache + 1;
62 struct i2c_client *i2c_client = codec->control_data;
63 s32 length;
64
65 length = i2c_smbus_read_i2c_block_data(i2c_client,
66 CS42L51_FIRSTREG | 0x80, CS42L51_NUMREGS, cache);
67 if (length != CS42L51_NUMREGS) {
68 dev_err(&i2c_client->dev,
69 "I2C read failure, addr=0x%x (ret=%d vs %d)\n",
70 i2c_client->addr, length, CS42L51_NUMREGS);
71 return -EIO;
72 }
73
74 return 0;
75}
76
72ed5a8c 77static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol,
78 struct snd_ctl_elem_value *ucontrol)
79{
80 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
81 unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3;
82
83 switch (value) {
84 default:
85 case 0:
86 ucontrol->value.integer.value[0] = 0;
87 break;
88 /* same value : (L+R)/2 and (R+L)/2 */
89 case 1:
90 case 2:
91 ucontrol->value.integer.value[0] = 1;
92 break;
93 case 3:
94 ucontrol->value.integer.value[0] = 2;
95 break;
96 }
97
98 return 0;
99}
100
101#define CHAN_MIX_NORMAL 0x00
102#define CHAN_MIX_BOTH 0x55
103#define CHAN_MIX_SWAP 0xFF
104
105static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol,
106 struct snd_ctl_elem_value *ucontrol)
107{
108 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
109 unsigned char val;
110
111 switch (ucontrol->value.integer.value[0]) {
112 default:
113 case 0:
114 val = CHAN_MIX_NORMAL;
115 break;
116 case 1:
117 val = CHAN_MIX_BOTH;
118 break;
119 case 2:
120 val = CHAN_MIX_SWAP;
121 break;
122 }
123
124 snd_soc_write(codec, CS42L51_PCM_MIXER, val);
125
126 return 1;
127}
128
129static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0);
130static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0);
131/* This is a lie. after -102 db, it stays at -102 */
132/* maybe a range would be better */
133static const DECLARE_TLV_DB_SCALE(aout_tlv, -11550, 50, 0);
134
135static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0);
136static const char *chan_mix[] = {
137 "L R",
138 "L+R",
139 "R L",
140};
141
142static const struct soc_enum cs42l51_chan_mix =
143 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix);
144
145static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
146 SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
147 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL,
148 7, 0xffffff99, 0x18, adc_pcm_tlv),
149 SOC_DOUBLE_R("PCM Playback Switch",
150 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1),
151 SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
152 CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL,
153 8, 0xffffff19, 0x18, aout_tlv),
154 SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
155 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL,
156 7, 0xffffff99, 0x18, adc_pcm_tlv),
157 SOC_DOUBLE_R("ADC Mixer Switch",
158 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1),
159 SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0),
160 SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0),
161 SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0),
162 SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0),
163 SOC_DOUBLE_TLV("Mic Boost Volume",
164 CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv),
165 SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv),
166 SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv),
167 SOC_ENUM_EXT("PCM channel mixer",
168 cs42l51_chan_mix,
169 cs42l51_get_chan_mix, cs42l51_set_chan_mix),
170};
171
172/*
173 * to power down, one must:
174 * 1.) Enable the PDN bit
175 * 2.) enable power-down for the select channels
176 * 3.) disable the PDN bit.
177 */
178static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w,
179 struct snd_kcontrol *kcontrol, int event)
180{
181 unsigned long value;
182
183 value = snd_soc_read(w->codec, CS42L51_POWER_CTL1);
184 value &= ~CS42L51_POWER_CTL1_PDN;
185
186 switch (event) {
187 case SND_SOC_DAPM_PRE_PMD:
188 value |= CS42L51_POWER_CTL1_PDN;
189 break;
190 default:
191 case SND_SOC_DAPM_POST_PMD:
192 break;
193 }
194 snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
195 CS42L51_POWER_CTL1_PDN, value);
196
197 return 0;
198}
199
200static const char *cs42l51_dac_names[] = {"Direct PCM",
201 "DSP PCM", "ADC"};
202static const struct soc_enum cs42l51_dac_mux_enum =
203 SOC_ENUM_SINGLE(CS42L51_DAC_CTL, 6, 3, cs42l51_dac_names);
204static const struct snd_kcontrol_new cs42l51_dac_mux_controls =
205 SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum);
206
207static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left",
208 "MIC Left", "MIC+preamp Left"};
209static const struct soc_enum cs42l51_adcl_mux_enum =
210 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 4, 4, cs42l51_adcl_names);
211static const struct snd_kcontrol_new cs42l51_adcl_mux_controls =
212 SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum);
213
214static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right",
215 "MIC Right", "MIC+preamp Right"};
216static const struct soc_enum cs42l51_adcr_mux_enum =
217 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 6, 4, cs42l51_adcr_names);
218static const struct snd_kcontrol_new cs42l51_adcr_mux_controls =
219 SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum);
220
221static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = {
222 SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1),
223 SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0,
224 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
225 SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0,
226 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
227 SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
228 CS42L51_POWER_CTL1, 1, 1,
229 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
230 SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
231 CS42L51_POWER_CTL1, 2, 1,
232 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
233 SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
234 CS42L51_POWER_CTL1, 5, 1,
235 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
236 SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
237 CS42L51_POWER_CTL1, 6, 1,
238 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
239
240 /* analog/mic */
241 SND_SOC_DAPM_INPUT("AIN1L"),
242 SND_SOC_DAPM_INPUT("AIN1R"),
243 SND_SOC_DAPM_INPUT("AIN2L"),
244 SND_SOC_DAPM_INPUT("AIN2R"),
245 SND_SOC_DAPM_INPUT("MICL"),
246 SND_SOC_DAPM_INPUT("MICR"),
247
248 SND_SOC_DAPM_MIXER("Mic Preamp Left",
249 CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0),
250 SND_SOC_DAPM_MIXER("Mic Preamp Right",
251 CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0),
252
253 /* HP */
254 SND_SOC_DAPM_OUTPUT("HPL"),
255 SND_SOC_DAPM_OUTPUT("HPR"),
256
257 /* mux */
258 SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0,
259 &cs42l51_dac_mux_controls),
260 SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0,
261 &cs42l51_adcl_mux_controls),
262 SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0,
263 &cs42l51_adcr_mux_controls),
264};
265
266static const struct snd_soc_dapm_route cs42l51_routes[] = {
267 {"HPL", NULL, "Left DAC"},
268 {"HPR", NULL, "Right DAC"},
269
270 {"Left ADC", NULL, "Left PGA"},
271 {"Right ADC", NULL, "Right PGA"},
272
273 {"Mic Preamp Left", NULL, "MICL"},
274 {"Mic Preamp Right", NULL, "MICR"},
275
276 {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
277 {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
278 {"PGA-ADC Mux Left", "MIC Left", "MICL" },
279 {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
280 {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
281 {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
282 {"PGA-ADC Mux Right", "MIC Right", "MICR" },
283 {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
284
285 {"Left PGA", NULL, "PGA-ADC Mux Left"},
286 {"Right PGA", NULL, "PGA-ADC Mux Right"},
287};
288
289static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai,
290 unsigned int format)
291{
292 struct snd_soc_codec *codec = codec_dai->codec;
293 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
294 int ret = 0;
295
296 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
297 case SND_SOC_DAIFMT_I2S:
298 case SND_SOC_DAIFMT_LEFT_J:
299 case SND_SOC_DAIFMT_RIGHT_J:
300 cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
301 break;
302 default:
303 dev_err(codec->dev, "invalid DAI format\n");
304 ret = -EINVAL;
305 }
306
307 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
308 case SND_SOC_DAIFMT_CBM_CFM:
309 cs42l51->func = MODE_MASTER;
310 break;
311 case SND_SOC_DAIFMT_CBS_CFS:
312 cs42l51->func = MODE_SLAVE_AUTO;
313 break;
314 default:
315 ret = -EINVAL;
316 break;
317 }
318
319 return ret;
320}
321
322struct cs42l51_ratios {
323 unsigned int ratio;
324 unsigned char speed_mode;
325 unsigned char mclk;
326};
327
328static struct cs42l51_ratios slave_ratios[] = {
329 { 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 },
330 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
331 { 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 },
332 { 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 },
333 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
334 { 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 },
335 { 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 },
336 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
337 { 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 },
338 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
339 { 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 },
340};
341
342static struct cs42l51_ratios slave_auto_ratios[] = {
343 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
344 { 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 },
345 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
346 { 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 },
347 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
348 { 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 },
349 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
350 { 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 },
351};
352
353static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai,
354 int clk_id, unsigned int freq, int dir)
355{
356 struct snd_soc_codec *codec = codec_dai->codec;
357 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
72ed5a8c 358
359 cs42l51->mclk = freq;
72ed5a8c 360 return 0;
361}
362
363static int cs42l51_hw_params(struct snd_pcm_substream *substream,
364 struct snd_pcm_hw_params *params,
365 struct snd_soc_dai *dai)
366{
367 struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad 368 struct snd_soc_codec *codec = rtd->codec;
72ed5a8c 369 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
370 int ret;
371 unsigned int i;
372 unsigned int rate;
373 unsigned int ratio;
374 struct cs42l51_ratios *ratios = NULL;
375 int nr_ratios = 0;
376 int intf_ctl, power_ctl, fmt;
377
378 switch (cs42l51->func) {
379 case MODE_MASTER:
380 return -EINVAL;
381 case MODE_SLAVE:
382 ratios = slave_ratios;
383 nr_ratios = ARRAY_SIZE(slave_ratios);
384 break;
385 case MODE_SLAVE_AUTO:
386 ratios = slave_auto_ratios;
387 nr_ratios = ARRAY_SIZE(slave_auto_ratios);
388 break;
389 }
390
391 /* Figure out which MCLK/LRCK ratio to use */
392 rate = params_rate(params); /* Sampling rate, in Hz */
393 ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */
394 for (i = 0; i < nr_ratios; i++) {
395 if (ratios[i].ratio == ratio)
396 break;
397 }
398
399 if (i == nr_ratios) {
400 /* We did not find a matching ratio */
401 dev_err(codec->dev, "could not find matching ratio\n");
402 return -EINVAL;
403 }
404
405 intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL);
406 power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL);
407
408 intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S
409 | CS42L51_INTF_CTL_DAC_FORMAT(7));
410 power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
411 | CS42L51_MIC_POWER_CTL_MCLK_DIV2);
412
413 switch (cs42l51->func) {
414 case MODE_MASTER:
415 intf_ctl |= CS42L51_INTF_CTL_MASTER;
416 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
417 break;
418 case MODE_SLAVE:
419 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
420 break;
421 case MODE_SLAVE_AUTO:
422 power_ctl |= CS42L51_MIC_POWER_CTL_AUTO;
423 break;
424 }
425
426 switch (cs42l51->audio_mode) {
427 case SND_SOC_DAIFMT_I2S:
428 intf_ctl |= CS42L51_INTF_CTL_ADC_I2S;
429 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S);
430 break;
431 case SND_SOC_DAIFMT_LEFT_J:
432 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24);
433 break;
434 case SND_SOC_DAIFMT_RIGHT_J:
435 switch (params_format(params)) {
436 case SNDRV_PCM_FORMAT_S16_LE:
437 case SNDRV_PCM_FORMAT_S16_BE:
438 fmt = CS42L51_DAC_DIF_RJ16;
439 break;
440 case SNDRV_PCM_FORMAT_S18_3LE:
441 case SNDRV_PCM_FORMAT_S18_3BE:
442 fmt = CS42L51_DAC_DIF_RJ18;
443 break;
444 case SNDRV_PCM_FORMAT_S20_3LE:
445 case SNDRV_PCM_FORMAT_S20_3BE:
446 fmt = CS42L51_DAC_DIF_RJ20;
447 break;
448 case SNDRV_PCM_FORMAT_S24_LE:
449 case SNDRV_PCM_FORMAT_S24_BE:
450 fmt = CS42L51_DAC_DIF_RJ24;
451 break;
452 default:
453 dev_err(codec->dev, "unknown format\n");
454 return -EINVAL;
455 }
456 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt);
457 break;
458 default:
459 dev_err(codec->dev, "unknown format\n");
460 return -EINVAL;
461 }
462
463 if (ratios[i].mclk)
464 power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2;
465
466 ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl);
467 if (ret < 0)
468 return ret;
469
470 ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl);
471 if (ret < 0)
472 return ret;
473
474 return 0;
475}
476
477static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute)
478{
479 struct snd_soc_codec *codec = dai->codec;
480 int reg;
481 int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE;
482
483 reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL);
484
485 if (mute)
486 reg |= mask;
487 else
488 reg &= ~mask;
489
490 return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg);
491}
492
493static struct snd_soc_dai_ops cs42l51_dai_ops = {
494 .hw_params = cs42l51_hw_params,
495 .set_sysclk = cs42l51_set_dai_sysclk,
496 .set_fmt = cs42l51_set_dai_fmt,
497 .digital_mute = cs42l51_dai_mute,
498};
499
f0fba2ad
LG		 500static struct snd_soc_dai_driver cs42l51_dai = {
501 .name = "cs42l51-hifi",
72ed5a8c 502 .playback = {
503 .stream_name = "Playback",
504 .channels_min = 1,
505 .channels_max = 2,
506 .rates = SNDRV_PCM_RATE_8000_96000,
507 .formats = CS42L51_FORMATS,
508 },
509 .capture = {
510 .stream_name = "Capture",
511 .channels_min = 1,
512 .channels_max = 2,
513 .rates = SNDRV_PCM_RATE_8000_96000,
514 .formats = CS42L51_FORMATS,
515 },
516 .ops = &cs42l51_dai_ops,
517};
72ed5a8c 518
f0fba2ad 519static int cs42l51_probe(struct snd_soc_codec *codec)
72ed5a8c 520{
f0fba2ad
LG		 521 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
522 int ret, reg;
72ed5a8c 523
f0fba2ad 524 codec->control_data = cs42l51->control_data;
72ed5a8c 525
f0fba2ad
LG		 526 ret = cs42l51_fill_cache(codec);
527 if (ret < 0) {
528 dev_err(codec->dev, "failed to fill register cache\n");
529 return ret;
530 }
72ed5a8c 531
f0fba2ad 532 ret = snd_soc_codec_set_cache_io(codec, 8, 8, cs42l51->control_type);
72ed5a8c 533 if (ret < 0) {
f0fba2ad 534 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
72ed5a8c 535 return ret;
536 }
537
f0fba2ad
LG		 538 /*
539 * DAC configuration
540 * - Use signal processor
541 * - auto mute
542 * - vol changes immediate
543 * - no de-emphasize
544 */
545 reg = CS42L51_DAC_CTL_DATA_SEL(1)
546 | CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
547 ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
548 if (ret < 0)
549 return ret;
550
72ed5a8c 551 snd_soc_add_controls(codec, cs42l51_snd_controls,
552 ARRAY_SIZE(cs42l51_snd_controls));
553 snd_soc_dapm_new_controls(codec, cs42l51_dapm_widgets,
554 ARRAY_SIZE(cs42l51_dapm_widgets));
555 snd_soc_dapm_add_routes(codec, cs42l51_routes,
556 ARRAY_SIZE(cs42l51_routes));
557
558 return 0;
559}
560
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LG		 561static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
562 .probe = cs42l51_probe,
563 .reg_cache_size = CS42L51_NUMREGS,
564 .reg_word_size = sizeof(u8),
565};
72ed5a8c 566
f0fba2ad
LG		 567static int cs42l51_i2c_probe(struct i2c_client *i2c_client,
568 const struct i2c_device_id *id)
72ed5a8c 569{
f0fba2ad
LG		 570 struct cs42l51_private *cs42l51;
571 int ret;
72ed5a8c 572
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LG		 573 /* Verify that we have a CS42L51 */
574 ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID);
575 if (ret < 0) {
576 dev_err(&i2c_client->dev, "failed to read I2C\n");
577 goto error;
578 }
579
580 if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
581 (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
582 dev_err(&i2c_client->dev, "Invalid chip id\n");
583 ret = -ENODEV;
584 goto error;
585 }
586
587 dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n",
588 ret & 7);
589
590 cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL);
591 if (!cs42l51) {
592 dev_err(&i2c_client->dev, "could not allocate codec\n");
593 return -ENOMEM;
594 }
595
596 i2c_set_clientdata(i2c_client, cs42l51);
597 cs42l51->control_data = i2c_client;
598 cs42l51->control_type = SND_SOC_I2C;
72ed5a8c 599
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LG		 600 ret = snd_soc_register_codec(&i2c_client->dev,
601 &soc_codec_device_cs42l51, &cs42l51_dai, 1);
602 if (ret < 0)
603 kfree(cs42l51);
604error:
605 return ret;
606}
607
608static int cs42l51_i2c_remove(struct i2c_client *client)
609{
610 struct cs42l51_private *cs42l51 = i2c_get_clientdata(client);
611
612 snd_soc_unregister_codec(&client->dev);
613 kfree(cs42l51);
72ed5a8c 614 return 0;
615}
616
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LG		 617static const struct i2c_device_id cs42l51_id[] = {
618 {"cs42l51", 0},
619 {}
620};
621MODULE_DEVICE_TABLE(i2c, cs42l51_id);
622
623static struct i2c_driver cs42l51_i2c_driver = {
624 .driver = {
c88e7b93 625 .name = "cs42l51-codec",
f0fba2ad
LG		 626 .owner = THIS_MODULE,
627 },
628 .id_table = cs42l51_id,
629 .probe = cs42l51_i2c_probe,
630 .remove = cs42l51_i2c_remove,
72ed5a8c 631};
72ed5a8c 632
633static int __init cs42l51_init(void)
634{
635 int ret;
636
637 ret = i2c_add_driver(&cs42l51_i2c_driver);
638 if (ret != 0) {
639 printk(KERN_ERR "%s: can't add i2c driver\n", __func__);
640 return ret;
641 }
642 return 0;
643}
644module_init(cs42l51_init);
645
646static void __exit cs42l51_exit(void)
647{
648 i2c_del_driver(&cs42l51_i2c_driver);
649}
650module_exit(cs42l51_exit);
651
69737897 652MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
72ed5a8c 653MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
654MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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