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RT-AC56 3.0.0.4.374.37 core
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / sound / soc / codecs / cs42l51.c
blobdd9b8550c402bcb65f2757ecc4123ba6c6c3c219
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
38 enum master_slave_mode {
39 MODE_SLAVE,
40 MODE_SLAVE_AUTO,
41 MODE_MASTER,
42 };
43
44 struct cs42l51_private {
45 unsigned int mclk;
46 unsigned int audio_mode; /* The mode (I2S or left-justified) */
47 enum master_slave_mode func;
48 struct snd_soc_codec codec;
49 u8 reg_cache[CS42L51_NUMREGS];
50 };
51
52 static struct snd_soc_codec *cs42l51_codec;
53
54 #define CS42L51_FORMATS ( \
55 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
56 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
57 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
58 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
59
60 static int cs42l51_fill_cache(struct snd_soc_codec *codec)
61 {
62 u8 *cache = codec->reg_cache + 1;
63 struct i2c_client *i2c_client = codec->control_data;
64 s32 length;
65
66 length = i2c_smbus_read_i2c_block_data(i2c_client,
67 CS42L51_FIRSTREG | 0x80, CS42L51_NUMREGS, cache);
68 if (length != CS42L51_NUMREGS) {
69 dev_err(&i2c_client->dev,
70 "I2C read failure, addr=0x%x (ret=%d vs %d)\n",
71 i2c_client->addr, length, CS42L51_NUMREGS);
72 return -EIO;
73 }
74
75 return 0;
76 }
77
78 static int cs42l51_i2c_probe(struct i2c_client *i2c_client,
79 const struct i2c_device_id *id)
80 {
81 struct snd_soc_codec *codec;
82 struct cs42l51_private *cs42l51;
83 int ret = 0;
84 int reg;
85
86 if (cs42l51_codec)
87 return -EBUSY;
88
89 /* Verify that we have a CS42L51 */
90 ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID);
91 if (ret < 0) {
92 dev_err(&i2c_client->dev, "failed to read I2C\n");
93 goto error;
94 }
95
96 if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
97 (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
98 dev_err(&i2c_client->dev, "Invalid chip id\n");
99 ret = -ENODEV;
100 goto error;
101 }
102
103 dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n",
104 ret & 7);
105
106 cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL);
107 if (!cs42l51) {
108 dev_err(&i2c_client->dev, "could not allocate codec\n");
109 return -ENOMEM;
110 }
111 codec = &cs42l51->codec;
112
113 mutex_init(&codec->mutex);
114 INIT_LIST_HEAD(&codec->dapm_widgets);
115 INIT_LIST_HEAD(&codec->dapm_paths);
116
117 codec->dev = &i2c_client->dev;
118 codec->name = "CS42L51";
119 codec->owner = THIS_MODULE;
120 codec->dai = &cs42l51_dai;
121 codec->num_dai = 1;
122 snd_soc_codec_set_drvdata(codec, cs42l51);
123
124 codec->control_data = i2c_client;
125 codec->reg_cache = cs42l51->reg_cache;
126 codec->reg_cache_size = CS42L51_NUMREGS;
127 i2c_set_clientdata(i2c_client, codec);
128
129 ret = cs42l51_fill_cache(codec);
130 if (ret < 0) {
131 dev_err(&i2c_client->dev, "failed to fill register cache\n");
132 goto error_alloc;
133 }
134
135 ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
136 if (ret < 0) {
137 dev_err(&i2c_client->dev, "Failed to set cache I/O: %d\n", ret);
138 goto error_alloc;
139 }
140
141 /*
142 * DAC configuration
143 * - Use signal processor
144 * - auto mute
145 * - vol changes immediate
146 * - no de-emphasize
147 */
148 reg = CS42L51_DAC_CTL_DATA_SEL(1)
149 | CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
150 ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
151 if (ret < 0)
152 goto error_alloc;
153
154 cs42l51_dai.dev = codec->dev;
155 cs42l51_codec = codec;
156
157 ret = snd_soc_register_codec(codec);
158 if (ret != 0) {
159 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
160 goto error_alloc;
161 }
162
163 ret = snd_soc_register_dai(&cs42l51_dai);
164 if (ret < 0) {
165 dev_err(&i2c_client->dev, "failed to register DAIe\n");
166 goto error_reg;
167 }
168
169 return 0;
170
171 error_reg:
172 snd_soc_unregister_codec(codec);
173 error_alloc:
174 kfree(cs42l51);
175 error:
176 return ret;
177 }
178
179 static int cs42l51_i2c_remove(struct i2c_client *client)
180 {
181 struct cs42l51_private *cs42l51 = i2c_get_clientdata(client);
182 snd_soc_unregister_dai(&cs42l51_dai);
183 snd_soc_unregister_codec(cs42l51_codec);
184 cs42l51_codec = NULL;
185 kfree(cs42l51);
186 return 0;
187 }
188
189
190 static const struct i2c_device_id cs42l51_id[] = {
191 {"cs42l51", 0},
192 {}
193 };
194 MODULE_DEVICE_TABLE(i2c, cs42l51_id);
195
196 static struct i2c_driver cs42l51_i2c_driver = {
197 .driver = {
198 .name = "CS42L51 I2C",
199 .owner = THIS_MODULE,
200 },
201 .id_table = cs42l51_id,
202 .probe = cs42l51_i2c_probe,
203 .remove = cs42l51_i2c_remove,
204 };
205
206 static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol,
207 struct snd_ctl_elem_value *ucontrol)
208 {
209 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
210 unsigned long value = snd_soc_read(codec, CS42L51_PCM_MIXER)&3;
211
212 switch (value) {
213 default:
214 case 0:
215 ucontrol->value.integer.value[0] = 0;
216 break;
217 /* same value : (L+R)/2 and (R+L)/2 */
218 case 1:
219 case 2:
220 ucontrol->value.integer.value[0] = 1;
221 break;
222 case 3:
223 ucontrol->value.integer.value[0] = 2;
224 break;
225 }
226
227 return 0;
228 }
229
230 #define CHAN_MIX_NORMAL 0x00
231 #define CHAN_MIX_BOTH 0x55
232 #define CHAN_MIX_SWAP 0xFF
233
234 static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol,
235 struct snd_ctl_elem_value *ucontrol)
236 {
237 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
238 unsigned char val;
239
240 switch (ucontrol->value.integer.value[0]) {
241 default:
242 case 0:
243 val = CHAN_MIX_NORMAL;
244 break;
245 case 1:
246 val = CHAN_MIX_BOTH;
247 break;
248 case 2:
249 val = CHAN_MIX_SWAP;
250 break;
251 }
252
253 snd_soc_write(codec, CS42L51_PCM_MIXER, val);
254
255 return 1;
256 }
257
258 static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0);
259 static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0);
260 /* This is a lie. after -102 db, it stays at -102 */
261 /* maybe a range would be better */
262 static const DECLARE_TLV_DB_SCALE(aout_tlv, -11550, 50, 0);
263
264 static const DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0);
265 static const char *chan_mix[] = {
266 "L R",
267 "L+R",
268 "R L",
269 };
270
271 static const struct soc_enum cs42l51_chan_mix =
272 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix);
273
274 static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
275 SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
276 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL,
277 7, 0xffffff99, 0x18, adc_pcm_tlv),
278 SOC_DOUBLE_R("PCM Playback Switch",
279 CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1),
280 SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
281 CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL,
282 8, 0xffffff19, 0x18, aout_tlv),
283 SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
284 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL,
285 7, 0xffffff99, 0x18, adc_pcm_tlv),
286 SOC_DOUBLE_R("ADC Mixer Switch",
287 CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1),
288 SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0),
289 SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0),
290 SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0),
291 SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0),
292 SOC_DOUBLE_TLV("Mic Boost Volume",
293 CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv),
294 SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv),
295 SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv),
296 SOC_ENUM_EXT("PCM channel mixer",
297 cs42l51_chan_mix,
298 cs42l51_get_chan_mix, cs42l51_set_chan_mix),
299 };
300
301 /*
302 * to power down, one must:
303 * 1.) Enable the PDN bit
304 * 2.) enable power-down for the select channels
305 * 3.) disable the PDN bit.
306 */
307 static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w,
308 struct snd_kcontrol *kcontrol, int event)
309 {
310 unsigned long value;
311
312 value = snd_soc_read(w->codec, CS42L51_POWER_CTL1);
313 value &= ~CS42L51_POWER_CTL1_PDN;
314
315 switch (event) {
316 case SND_SOC_DAPM_PRE_PMD:
317 value |= CS42L51_POWER_CTL1_PDN;
318 break;
319 default:
320 case SND_SOC_DAPM_POST_PMD:
321 break;
322 }
323 snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
324 CS42L51_POWER_CTL1_PDN, value);
325
326 return 0;
327 }
328
329 static const char *cs42l51_dac_names[] = {"Direct PCM",
330 "DSP PCM", "ADC"};
331 static const struct soc_enum cs42l51_dac_mux_enum =
332 SOC_ENUM_SINGLE(CS42L51_DAC_CTL, 6, 3, cs42l51_dac_names);
333 static const struct snd_kcontrol_new cs42l51_dac_mux_controls =
334 SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum);
335
336 static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left",
337 "MIC Left", "MIC+preamp Left"};
338 static const struct soc_enum cs42l51_adcl_mux_enum =
339 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 4, 4, cs42l51_adcl_names);
340 static const struct snd_kcontrol_new cs42l51_adcl_mux_controls =
341 SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum);
342
343 static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right",
344 "MIC Right", "MIC+preamp Right"};
345 static const struct soc_enum cs42l51_adcr_mux_enum =
346 SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 6, 4, cs42l51_adcr_names);
347 static const struct snd_kcontrol_new cs42l51_adcr_mux_controls =
348 SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum);
349
350 static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = {
351 SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1),
352 SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0,
353 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
354 SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0,
355 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
356 SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
357 CS42L51_POWER_CTL1, 1, 1,
358 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
359 SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
360 CS42L51_POWER_CTL1, 2, 1,
361 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
362 SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
363 CS42L51_POWER_CTL1, 5, 1,
364 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
365 SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
366 CS42L51_POWER_CTL1, 6, 1,
367 cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
368
369 /* analog/mic */
370 SND_SOC_DAPM_INPUT("AIN1L"),
371 SND_SOC_DAPM_INPUT("AIN1R"),
372 SND_SOC_DAPM_INPUT("AIN2L"),
373 SND_SOC_DAPM_INPUT("AIN2R"),
374 SND_SOC_DAPM_INPUT("MICL"),
375 SND_SOC_DAPM_INPUT("MICR"),
376
377 SND_SOC_DAPM_MIXER("Mic Preamp Left",
378 CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0),
379 SND_SOC_DAPM_MIXER("Mic Preamp Right",
380 CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0),
381
382 /* HP */
383 SND_SOC_DAPM_OUTPUT("HPL"),
384 SND_SOC_DAPM_OUTPUT("HPR"),
385
386 /* mux */
387 SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0,
388 &cs42l51_dac_mux_controls),
389 SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0,
390 &cs42l51_adcl_mux_controls),
391 SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0,
392 &cs42l51_adcr_mux_controls),
393 };
394
395 static const struct snd_soc_dapm_route cs42l51_routes[] = {
396 {"HPL", NULL, "Left DAC"},
397 {"HPR", NULL, "Right DAC"},
398
399 {"Left ADC", NULL, "Left PGA"},
400 {"Right ADC", NULL, "Right PGA"},
401
402 {"Mic Preamp Left", NULL, "MICL"},
403 {"Mic Preamp Right", NULL, "MICR"},
404
405 {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
406 {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
407 {"PGA-ADC Mux Left", "MIC Left", "MICL" },
408 {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
409 {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
410 {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
411 {"PGA-ADC Mux Right", "MIC Right", "MICR" },
412 {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
413
414 {"Left PGA", NULL, "PGA-ADC Mux Left"},
415 {"Right PGA", NULL, "PGA-ADC Mux Right"},
416 };
417
418 static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai,
419 unsigned int format)
420 {
421 struct snd_soc_codec *codec = codec_dai->codec;
422 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
423 int ret = 0;
424
425 switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
426 case SND_SOC_DAIFMT_I2S:
427 case SND_SOC_DAIFMT_LEFT_J:
428 case SND_SOC_DAIFMT_RIGHT_J:
429 cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
430 break;
431 default:
432 dev_err(codec->dev, "invalid DAI format\n");
433 ret = -EINVAL;
434 }
435
436 switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
437 case SND_SOC_DAIFMT_CBM_CFM:
438 cs42l51->func = MODE_MASTER;
439 break;
440 case SND_SOC_DAIFMT_CBS_CFS:
441 cs42l51->func = MODE_SLAVE_AUTO;
442 break;
443 default:
444 ret = -EINVAL;
445 break;
446 }
447
448 return ret;
449 }
450
451 struct cs42l51_ratios {
452 unsigned int ratio;
453 unsigned char speed_mode;
454 unsigned char mclk;
455 };
456
457 static struct cs42l51_ratios slave_ratios[] = {
458 { 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 },
459 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
460 { 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 },
461 { 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 },
462 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
463 { 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 },
464 { 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 },
465 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
466 { 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 },
467 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
468 { 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 },
469 };
470
471 static struct cs42l51_ratios slave_auto_ratios[] = {
472 { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
473 { 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 },
474 { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
475 { 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 },
476 { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
477 { 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 },
478 { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
479 { 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 },
480 };
481
482 static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai,
483 int clk_id, unsigned int freq, int dir)
484 {
485 struct snd_soc_codec *codec = codec_dai->codec;
486 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
487 struct cs42l51_ratios *ratios = NULL;
488 int nr_ratios = 0;
489 unsigned int rates = 0;
490 unsigned int rate_min = -1;
491 unsigned int rate_max = 0;
492 int i;
493
494 cs42l51->mclk = freq;
495
496 switch (cs42l51->func) {
497 case MODE_MASTER:
498 return -EINVAL;
499 case MODE_SLAVE:
500 ratios = slave_ratios;
501 nr_ratios = ARRAY_SIZE(slave_ratios);
502 break;
503 case MODE_SLAVE_AUTO:
504 ratios = slave_auto_ratios;
505 nr_ratios = ARRAY_SIZE(slave_auto_ratios);
506 break;
507 }
508
509 for (i = 0; i < nr_ratios; i++) {
510 unsigned int rate = freq / ratios[i].ratio;
511 rates |= snd_pcm_rate_to_rate_bit(rate);
512 if (rate < rate_min)
513 rate_min = rate;
514 if (rate > rate_max)
515 rate_max = rate;
516 }
517 rates &= ~SNDRV_PCM_RATE_KNOT;
518
519 if (!rates) {
520 dev_err(codec->dev, "could not find a valid sample rate\n");
521 return -EINVAL;
522 }
523
524 codec_dai->playback.rates = rates;
525 codec_dai->playback.rate_min = rate_min;
526 codec_dai->playback.rate_max = rate_max;
527
528 codec_dai->capture.rates = rates;
529 codec_dai->capture.rate_min = rate_min;
530 codec_dai->capture.rate_max = rate_max;
531
532 return 0;
533 }
534
535 static int cs42l51_hw_params(struct snd_pcm_substream *substream,
536 struct snd_pcm_hw_params *params,
537 struct snd_soc_dai *dai)
538 {
539 struct snd_soc_pcm_runtime *rtd = substream->private_data;
540 struct snd_soc_device *socdev = rtd->socdev;
541 struct snd_soc_codec *codec = socdev->card->codec;
542 struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
543 int ret;
544 unsigned int i;
545 unsigned int rate;
546 unsigned int ratio;
547 struct cs42l51_ratios *ratios = NULL;
548 int nr_ratios = 0;
549 int intf_ctl, power_ctl, fmt;
550
551 switch (cs42l51->func) {
552 case MODE_MASTER:
553 return -EINVAL;
554 case MODE_SLAVE:
555 ratios = slave_ratios;
556 nr_ratios = ARRAY_SIZE(slave_ratios);
557 break;
558 case MODE_SLAVE_AUTO:
559 ratios = slave_auto_ratios;
560 nr_ratios = ARRAY_SIZE(slave_auto_ratios);
561 break;
562 }
563
564 /* Figure out which MCLK/LRCK ratio to use */
565 rate = params_rate(params); /* Sampling rate, in Hz */
566 ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */
567 for (i = 0; i < nr_ratios; i++) {
568 if (ratios[i].ratio == ratio)
569 break;
570 }
571
572 if (i == nr_ratios) {
573 /* We did not find a matching ratio */
574 dev_err(codec->dev, "could not find matching ratio\n");
575 return -EINVAL;
576 }
577
578 intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL);
579 power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL);
580
581 intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S
582 | CS42L51_INTF_CTL_DAC_FORMAT(7));
583 power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
584 | CS42L51_MIC_POWER_CTL_MCLK_DIV2);
585
586 switch (cs42l51->func) {
587 case MODE_MASTER:
588 intf_ctl |= CS42L51_INTF_CTL_MASTER;
589 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
590 break;
591 case MODE_SLAVE:
592 power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
593 break;
594 case MODE_SLAVE_AUTO:
595 power_ctl |= CS42L51_MIC_POWER_CTL_AUTO;
596 break;
597 }
598
599 switch (cs42l51->audio_mode) {
600 case SND_SOC_DAIFMT_I2S:
601 intf_ctl |= CS42L51_INTF_CTL_ADC_I2S;
602 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S);
603 break;
604 case SND_SOC_DAIFMT_LEFT_J:
605 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_LJ24);
606 break;
607 case SND_SOC_DAIFMT_RIGHT_J:
608 switch (params_format(params)) {
609 case SNDRV_PCM_FORMAT_S16_LE:
610 case SNDRV_PCM_FORMAT_S16_BE:
611 fmt = CS42L51_DAC_DIF_RJ16;
612 break;
613 case SNDRV_PCM_FORMAT_S18_3LE:
614 case SNDRV_PCM_FORMAT_S18_3BE:
615 fmt = CS42L51_DAC_DIF_RJ18;
616 break;
617 case SNDRV_PCM_FORMAT_S20_3LE:
618 case SNDRV_PCM_FORMAT_S20_3BE:
619 fmt = CS42L51_DAC_DIF_RJ20;
620 break;
621 case SNDRV_PCM_FORMAT_S24_LE:
622 case SNDRV_PCM_FORMAT_S24_BE:
623 fmt = CS42L51_DAC_DIF_RJ24;
624 break;
625 default:
626 dev_err(codec->dev, "unknown format\n");
627 return -EINVAL;
628 }
629 intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt);
630 break;
631 default:
632 dev_err(codec->dev, "unknown format\n");
633 return -EINVAL;
634 }
635
636 if (ratios[i].mclk)
637 power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2;
638
639 ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl);
640 if (ret < 0)
641 return ret;
642
643 ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl);
644 if (ret < 0)
645 return ret;
646
647 return 0;
648 }
649
650 static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute)
651 {
652 struct snd_soc_codec *codec = dai->codec;
653 int reg;
654 int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE;
655
656 reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL);
657
658 if (mute)
659 reg |= mask;
660 else
661 reg &= ~mask;
662
663 return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg);
664 }
665
666 static struct snd_soc_dai_ops cs42l51_dai_ops = {
667 .hw_params = cs42l51_hw_params,
668 .set_sysclk = cs42l51_set_dai_sysclk,
669 .set_fmt = cs42l51_set_dai_fmt,
670 .digital_mute = cs42l51_dai_mute,
671 };
672
673 struct snd_soc_dai cs42l51_dai = {
674 .name = "CS42L51 HiFi",
675 .playback = {
676 .stream_name = "Playback",
677 .channels_min = 1,
678 .channels_max = 2,
679 .rates = SNDRV_PCM_RATE_8000_96000,
680 .formats = CS42L51_FORMATS,
681 },
682 .capture = {
683 .stream_name = "Capture",
684 .channels_min = 1,
685 .channels_max = 2,
686 .rates = SNDRV_PCM_RATE_8000_96000,
687 .formats = CS42L51_FORMATS,
688 },
689 .ops = &cs42l51_dai_ops,
690 };
691 EXPORT_SYMBOL_GPL(cs42l51_dai);
692
693
694 static int cs42l51_probe(struct platform_device *pdev)
695 {
696 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
697 struct snd_soc_codec *codec;
698 int ret = 0;
699
700 if (!cs42l51_codec) {
701 dev_err(&pdev->dev, "CS42L51 codec not yet registered\n");
702 return -EINVAL;
703 }
704
705 socdev->card->codec = cs42l51_codec;
706 codec = socdev->card->codec;
707
708 /* Register PCMs */
709 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
710 if (ret < 0) {
711 dev_err(&pdev->dev, "failed to create PCMs\n");
712 return ret;
713 }
714
715 snd_soc_add_controls(codec, cs42l51_snd_controls,
716 ARRAY_SIZE(cs42l51_snd_controls));
717 snd_soc_dapm_new_controls(codec, cs42l51_dapm_widgets,
718 ARRAY_SIZE(cs42l51_dapm_widgets));
719 snd_soc_dapm_add_routes(codec, cs42l51_routes,
720 ARRAY_SIZE(cs42l51_routes));
721
722 return 0;
723 }
724
725
726 static int cs42l51_remove(struct platform_device *pdev)
727 {
728 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
729
730 snd_soc_free_pcms(socdev);
731 snd_soc_dapm_free(socdev);
732
733 return 0;
734 }
735
736 struct snd_soc_codec_device soc_codec_device_cs42l51 = {
737 .probe = cs42l51_probe,
738 .remove = cs42l51_remove
739 };
740 EXPORT_SYMBOL_GPL(soc_codec_device_cs42l51);
741
742 static int __init cs42l51_init(void)
743 {
744 int ret;
745
746 ret = i2c_add_driver(&cs42l51_i2c_driver);
747 if (ret != 0) {
748 printk(KERN_ERR "%s: can't add i2c driver\n", __func__);
749 return ret;
750 }
751 return 0;
752 }
753 module_init(cs42l51_init);
754
755 static void __exit cs42l51_exit(void)
756 {
757 i2c_del_driver(&cs42l51_i2c_driver);
758 }
759 module_exit(cs42l51_exit);
760
761 MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>");
762 MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
763 MODULE_LICENSE("GPL");
Tomato firmware and modifications.