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I2C: Add helper macro for i2c_driver boilerplate
[zen-stable.git] / sound / soc / codecs / cs42l51.c
blob8c3c8205d19e99016e47b1564aa58cbdf91b0bab
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/tlv.h>
30 #include <sound/initval.h>
31 #include <sound/pcm_params.h>
32 #include <sound/pcm.h>
33 #include <linux/i2c.h>
34
35 #include "cs42l51.h"
36
37 enum master_slave_mode {
38 MODE_SLAVE,
39 MODE_SLAVE_AUTO,
40 MODE_MASTER,
41 };
42
43 struct cs42l51_private {
44 enum snd_soc_control_type control_type;
45 unsigned int mclk;
46 unsigned int audio_mode; /* The mode (I2S or left-justified) */
47 enum master_slave_mode func;
48 };
49
50 #define CS42L51_FORMATS ( \
51 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
52 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
53 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
54 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
55
56 static int cs42l51_fill_cache(struct snd_soc_codec *codec)
57 {
58 u8 *cache = codec->reg_cache + 1;
59 struct i2c_client *i2c_client = to_i2c_client(codec->dev);
60 s32 length;
61
62 length = i2c_smbus_read_i2c_block_data(i2c_client,
63 CS42L51_FIRSTREG | 0x80, CS42L51_NUMREGS, cache);
64 if (length != CS42L51_NUMREGS) {
65 dev_err(&i2c_client->dev,
66 "I2C read failure, addr=0x%x (ret=%d vs %d)\n",
67 i2c_client->addr, length, CS42L51_NUMREGS);
68 return -EIO;
69 }
70
71 return 0;
72 }
73
74 static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol,
75 struct snd_ctl_elem_value *ucontrol)
76 {
77 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
78 unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3;
79
80 switch (value) {
81 default:
82 case 0:
83 ucontrol->value.integer.value[0] = 0;
84 break;
85 /* same value : (L+R)/2 and (R+L)/2 */
86 case 1:
87 case 2:
88 ucontrol->value.integer.value[0] = 1;
89 break;
90 case 3:
91 ucontrol->value.integer.value[0] = 2;
92 break;
93 }
94
95 return 0;
96 }
97
98 #define CHAN_MIX_NORMAL 0x00
99 #define CHAN_MIX_BOTH 0x55
100 #define CHAN_MIX_SWAP 0xFF
101
102 static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol,
103 struct snd_ctl_elem_value *ucontrol)
104 {
105 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
106 unsigned char val;
107
108 switch (ucontrol->value.integer.value[0]) {
109 default:
110 case 0:
111 val = CHAN_MIX_NORMAL;
112 break;
113 case 1:
114 val = CHAN_MIX_BOTH;
115 break;
116 case 2:
117 val = CHAN_MIX_SWAP;
118 break;
119 }
120
121 snd_soc_write(codec, CS42L51_PCM_MIXER, val);
122
123 return 1;
124 }
125
126 static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0);
127 static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0);
128 /* This is a lie. after -102 db, it stays at -102 */
129 /* maybe a range would be better */
130 static const DECLARE_TLV_DB_SCALE(aout_tlv, -11550, 50, 0);
131
132 static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0);
133 static const char *chan_mix[] = {
134 "L R",
135 "L+R",
136 "R L",
137 };
138
139 static const struct soc_enum cs42l51_chan_mix =
140 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix);
141
142 static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
143 SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
144 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL,
145 7, 0xffffff99, 0x18, adc_pcm_tlv),
146 SOC_DOUBLE_R("PCM Playback Switch",
147 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1),
148 SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
149 CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL,
150 8, 0xffffff19, 0x18, aout_tlv),
151 SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
152 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL,
153 7, 0xffffff99, 0x18, adc_pcm_tlv),
154 SOC_DOUBLE_R("ADC Mixer Switch",
155 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1),
156 SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0),
157 SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0),
158 SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0),
159 SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0),
160 SOC_DOUBLE_TLV("Mic Boost Volume",
161 CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv),
162 SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv),
163 SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv),
164 SOC_ENUM_EXT("PCM channel mixer",
165 cs42l51_chan_mix,
166 cs42l51_get_chan_mix, cs42l51_set_chan_mix),
167 };
168
169 /*
170 * to power down, one must:
171 * 1.) Enable the PDN bit
172 * 2.) enable power-down for the select channels
173 * 3.) disable the PDN bit.
174 */
175 static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w,
176 struct snd_kcontrol *kcontrol, int event)
177 {
178 unsigned long value;
179
180 value = snd_soc_read(w->codec, CS42L51_POWER_CTL1);
181 value &= ~CS42L51_POWER_CTL1_PDN;
182
183 switch (event) {
184 case SND_SOC_DAPM_PRE_PMD:
185 value |= CS42L51_POWER_CTL1_PDN;
186 break;
187 default:
188 case SND_SOC_DAPM_POST_PMD:
189 break;
190 }
191 snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
192 CS42L51_POWER_CTL1_PDN, value);
193
194 return 0;
195 }
196
197 static const char *cs42l51_dac_names[] = {"Direct PCM",
198 "DSP PCM", "ADC"};
199 static const struct soc_enum cs42l51_dac_mux_enum =
200 SOC_ENUM_SINGLE(CS42L51_DAC_CTL, 6, 3, cs42l51_dac_names);
201 static const struct snd_kcontrol_new cs42l51_dac_mux_controls =
202 SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum);
203
204 static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left",
205 "MIC Left", "MIC+preamp Left"};
206 static const struct soc_enum cs42l51_adcl_mux_enum =
207 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 4, 4, cs42l51_adcl_names);
208 static const struct snd_kcontrol_new cs42l51_adcl_mux_controls =
209 SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum);
210
211 static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right",
212 "MIC Right", "MIC+preamp Right"};
213 static const struct soc_enum cs42l51_adcr_mux_enum =
214 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 6, 4, cs42l51_adcr_names);
215 static const struct snd_kcontrol_new cs42l51_adcr_mux_controls =
216 SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum);
217
218 static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = {
219 SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1),
220 SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0,
221 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
222 SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0,
223 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
224 SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
225 CS42L51_POWER_CTL1, 1, 1,
226 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
227 SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
228 CS42L51_POWER_CTL1, 2, 1,
229 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
230 SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
231 CS42L51_POWER_CTL1, 5, 1,
232 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
233 SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
234 CS42L51_POWER_CTL1, 6, 1,
235 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
236
237 /* analog/mic */
238 SND_SOC_DAPM_INPUT("AIN1L"),
239 SND_SOC_DAPM_INPUT("AIN1R"),
240 SND_SOC_DAPM_INPUT("AIN2L"),
241 SND_SOC_DAPM_INPUT("AIN2R"),
242 SND_SOC_DAPM_INPUT("MICL"),
243 SND_SOC_DAPM_INPUT("MICR"),
244
245 SND_SOC_DAPM_MIXER("Mic Preamp Left",
246 CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0),
247 SND_SOC_DAPM_MIXER("Mic Preamp Right",
248 CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0),
249
250 /* HP */
251 SND_SOC_DAPM_OUTPUT("HPL"),
252 SND_SOC_DAPM_OUTPUT("HPR"),
253
254 /* mux */
255 SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0,
256 &cs42l51_dac_mux_controls),
257 SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0,
258 &cs42l51_adcl_mux_controls),
259 SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0,
260 &cs42l51_adcr_mux_controls),
261 };
262
263 static const struct snd_soc_dapm_route cs42l51_routes[] = {
264 {"HPL", NULL, "Left DAC"},
265 {"HPR", NULL, "Right DAC"},
266
267 {"Left ADC", NULL, "Left PGA"},
268 {"Right ADC", NULL, "Right PGA"},
269
270 {"Mic Preamp Left", NULL, "MICL"},
271 {"Mic Preamp Right", NULL, "MICR"},
272
273 {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
274 {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
275 {"PGA-ADC Mux Left", "MIC Left", "MICL" },
276 {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
277 {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
278 {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
279 {"PGA-ADC Mux Right", "MIC Right", "MICR" },
280 {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
281
282 {"Left PGA", NULL, "PGA-ADC Mux Left"},
283 {"Right PGA", NULL, "PGA-ADC Mux Right"},
284 };
285
286 static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai,
287 unsigned int format)
288 {
289 struct snd_soc_codec *codec = codec_dai->codec;
290 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
291
292 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
293 case SND_SOC_DAIFMT_I2S:
294 case SND_SOC_DAIFMT_LEFT_J:
295 case SND_SOC_DAIFMT_RIGHT_J:
296 cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
297 break;
298 default:
299 dev_err(codec->dev, "invalid DAI format\n");
300 return -EINVAL;
301 }
302
303 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
304 case SND_SOC_DAIFMT_CBM_CFM:
305 cs42l51->func = MODE_MASTER;
306 break;
307 case SND_SOC_DAIFMT_CBS_CFS:
308 cs42l51->func = MODE_SLAVE_AUTO;
309 break;
310 default:
311 dev_err(codec->dev, "Unknown master/slave configuration\n");
312 return -EINVAL;
313 }
314
315 return 0;
316 }
317
318 struct cs42l51_ratios {
319 unsigned int ratio;
320 unsigned char speed_mode;
321 unsigned char mclk;
322 };
323
324 static struct cs42l51_ratios slave_ratios[] = {
325 { 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 },
326 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
327 { 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 },
328 { 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 },
329 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
330 { 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 },
331 { 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 },
332 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
333 { 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 },
334 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
335 { 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 },
336 };
337
338 static struct cs42l51_ratios slave_auto_ratios[] = {
339 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
340 { 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 },
341 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
342 { 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 },
343 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
344 { 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 },
345 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
346 { 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 },
347 };
348
349 static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai,
350 int clk_id, unsigned int freq, int dir)
351 {
352 struct snd_soc_codec *codec = codec_dai->codec;
353 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
354
355 cs42l51->mclk = freq;
356 return 0;
357 }
358
359 static int cs42l51_hw_params(struct snd_pcm_substream *substream,
360 struct snd_pcm_hw_params *params,
361 struct snd_soc_dai *dai)
362 {
363 struct snd_soc_pcm_runtime *rtd = substream->private_data;
364 struct snd_soc_codec *codec = rtd->codec;
365 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
366 int ret;
367 unsigned int i;
368 unsigned int rate;
369 unsigned int ratio;
370 struct cs42l51_ratios *ratios = NULL;
371 int nr_ratios = 0;
372 int intf_ctl, power_ctl, fmt;
373
374 switch (cs42l51->func) {
375 case MODE_MASTER:
376 return -EINVAL;
377 case MODE_SLAVE:
378 ratios = slave_ratios;
379 nr_ratios = ARRAY_SIZE(slave_ratios);
380 break;
381 case MODE_SLAVE_AUTO:
382 ratios = slave_auto_ratios;
383 nr_ratios = ARRAY_SIZE(slave_auto_ratios);
384 break;
385 }
386
387 /* Figure out which MCLK/LRCK ratio to use */
388 rate = params_rate(params); /* Sampling rate, in Hz */
389 ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */
390 for (i = 0; i < nr_ratios; i++) {
391 if (ratios[i].ratio == ratio)
392 break;
393 }
394
395 if (i == nr_ratios) {
396 /* We did not find a matching ratio */
397 dev_err(codec->dev, "could not find matching ratio\n");
398 return -EINVAL;
399 }
400
401 intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL);
402 power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL);
403
404 intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S
405 | CS42L51_INTF_CTL_DAC_FORMAT(7));
406 power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
407 | CS42L51_MIC_POWER_CTL_MCLK_DIV2);
408
409 switch (cs42l51->func) {
410 case MODE_MASTER:
411 intf_ctl |= CS42L51_INTF_CTL_MASTER;
412 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
413 break;
414 case MODE_SLAVE:
415 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
416 break;
417 case MODE_SLAVE_AUTO:
418 power_ctl |= CS42L51_MIC_POWER_CTL_AUTO;
419 break;
420 }
421
422 switch (cs42l51->audio_mode) {
423 case SND_SOC_DAIFMT_I2S:
424 intf_ctl |= CS42L51_INTF_CTL_ADC_I2S;
425 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S);
426 break;
427 case SND_SOC_DAIFMT_LEFT_J:
428 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24);
429 break;
430 case SND_SOC_DAIFMT_RIGHT_J:
431 switch (params_format(params)) {
432 case SNDRV_PCM_FORMAT_S16_LE:
433 case SNDRV_PCM_FORMAT_S16_BE:
434 fmt = CS42L51_DAC_DIF_RJ16;
435 break;
436 case SNDRV_PCM_FORMAT_S18_3LE:
437 case SNDRV_PCM_FORMAT_S18_3BE:
438 fmt = CS42L51_DAC_DIF_RJ18;
439 break;
440 case SNDRV_PCM_FORMAT_S20_3LE:
441 case SNDRV_PCM_FORMAT_S20_3BE:
442 fmt = CS42L51_DAC_DIF_RJ20;
443 break;
444 case SNDRV_PCM_FORMAT_S24_LE:
445 case SNDRV_PCM_FORMAT_S24_BE:
446 fmt = CS42L51_DAC_DIF_RJ24;
447 break;
448 default:
449 dev_err(codec->dev, "unknown format\n");
450 return -EINVAL;
451 }
452 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt);
453 break;
454 default:
455 dev_err(codec->dev, "unknown format\n");
456 return -EINVAL;
457 }
458
459 if (ratios[i].mclk)
460 power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2;
461
462 ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl);
463 if (ret < 0)
464 return ret;
465
466 ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl);
467 if (ret < 0)
468 return ret;
469
470 return 0;
471 }
472
473 static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute)
474 {
475 struct snd_soc_codec *codec = dai->codec;
476 int reg;
477 int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE;
478
479 reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL);
480
481 if (mute)
482 reg |= mask;
483 else
484 reg &= ~mask;
485
486 return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg);
487 }
488
489 static struct snd_soc_dai_ops cs42l51_dai_ops = {
490 .hw_params = cs42l51_hw_params,
491 .set_sysclk = cs42l51_set_dai_sysclk,
492 .set_fmt = cs42l51_set_dai_fmt,
493 .digital_mute = cs42l51_dai_mute,
494 };
495
496 static struct snd_soc_dai_driver cs42l51_dai = {
497 .name = "cs42l51-hifi",
498 .playback = {
499 .stream_name = "Playback",
500 .channels_min = 1,
501 .channels_max = 2,
502 .rates = SNDRV_PCM_RATE_8000_96000,
503 .formats = CS42L51_FORMATS,
504 },
505 .capture = {
506 .stream_name = "Capture",
507 .channels_min = 1,
508 .channels_max = 2,
509 .rates = SNDRV_PCM_RATE_8000_96000,
510 .formats = CS42L51_FORMATS,
511 },
512 .ops = &cs42l51_dai_ops,
513 };
514
515 static int cs42l51_probe(struct snd_soc_codec *codec)
516 {
517 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
518 struct snd_soc_dapm_context *dapm = &codec->dapm;
519 int ret, reg;
520
521 ret = cs42l51_fill_cache(codec);
522 if (ret < 0) {
523 dev_err(codec->dev, "failed to fill register cache\n");
524 return ret;
525 }
526
527 ret = snd_soc_codec_set_cache_io(codec, 8, 8, cs42l51->control_type);
528 if (ret < 0) {
529 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
530 return ret;
531 }
532
533 /*
534 * DAC configuration
535 * - Use signal processor
536 * - auto mute
537 * - vol changes immediate
538 * - no de-emphasize
539 */
540 reg = CS42L51_DAC_CTL_DATA_SEL(1)
541 | CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
542 ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
543 if (ret < 0)
544 return ret;
545
546 snd_soc_add_controls(codec, cs42l51_snd_controls,
547 ARRAY_SIZE(cs42l51_snd_controls));
548 snd_soc_dapm_new_controls(dapm, cs42l51_dapm_widgets,
549 ARRAY_SIZE(cs42l51_dapm_widgets));
550 snd_soc_dapm_add_routes(dapm, cs42l51_routes,
551 ARRAY_SIZE(cs42l51_routes));
552
553 return 0;
554 }
555
556 static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
557 .probe = cs42l51_probe,
558 .reg_cache_size = CS42L51_NUMREGS,
559 .reg_word_size = sizeof(u8),
560 };
561
562 static int cs42l51_i2c_probe(struct i2c_client *i2c_client,
563 const struct i2c_device_id *id)
564 {
565 struct cs42l51_private *cs42l51;
566 int ret;
567
568 /* Verify that we have a CS42L51 */
569 ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID);
570 if (ret < 0) {
571 dev_err(&i2c_client->dev, "failed to read I2C\n");
572 goto error;
573 }
574
575 if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
576 (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
577 dev_err(&i2c_client->dev, "Invalid chip id\n");
578 ret = -ENODEV;
579 goto error;
580 }
581
582 dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n",
583 ret & 7);
584
585 cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL);
586 if (!cs42l51) {
587 dev_err(&i2c_client->dev, "could not allocate codec\n");
588 return -ENOMEM;
589 }
590
591 i2c_set_clientdata(i2c_client, cs42l51);
592 cs42l51->control_type = SND_SOC_I2C;
593
594 ret = snd_soc_register_codec(&i2c_client->dev,
595 &soc_codec_device_cs42l51, &cs42l51_dai, 1);
596 if (ret < 0)
597 kfree(cs42l51);
598 error:
599 return ret;
600 }
601
602 static int cs42l51_i2c_remove(struct i2c_client *client)
603 {
604 struct cs42l51_private *cs42l51 = i2c_get_clientdata(client);
605
606 snd_soc_unregister_codec(&client->dev);
607 kfree(cs42l51);
608 return 0;
609 }
610
611 static const struct i2c_device_id cs42l51_id[] = {
612 {"cs42l51", 0},
613 {}
614 };
615 MODULE_DEVICE_TABLE(i2c, cs42l51_id);
616
617 static struct i2c_driver cs42l51_i2c_driver = {
618 .driver = {
619 .name = "cs42l51-codec",
620 .owner = THIS_MODULE,
621 },
622 .id_table = cs42l51_id,
623 .probe = cs42l51_i2c_probe,
624 .remove = cs42l51_i2c_remove,
625 };
626
627 static int __init cs42l51_init(void)
628 {
629 int ret;
630
631 ret = i2c_add_driver(&cs42l51_i2c_driver);
632 if (ret != 0) {
633 printk(KERN_ERR "%s: can't add i2c driver\n", __func__);
634 return ret;
635 }
636 return 0;
637 }
638 module_init(cs42l51_init);
639
640 static void __exit cs42l51_exit(void)
641 {
642 i2c_del_driver(&cs42l51_i2c_driver);
643 }
644 module_exit(cs42l51_exit);
645
646 MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>");
647 MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
648 MODULE_LICENSE("GPL");