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Diffstat (limited to 'sound/soc/codecs/ad1938.c')
-rw-r--r--sound/soc/codecs/ad1938.c522
1 files changed, 0 insertions, 522 deletions
diff --git a/sound/soc/codecs/ad1938.c b/sound/soc/codecs/ad1938.c
deleted file mode 100644
index 240cd155b313..000000000000
--- a/sound/soc/codecs/ad1938.c
+++ /dev/null
@@ -1,522 +0,0 @@
1/*
2 * File: sound/soc/codecs/ad1938.c
3 * Author: Barry Song <Barry.Song@analog.com>
4 *
5 * Created: June 04 2009
6 * Description: Driver for AD1938 sound chip
7 *
8 * Modified:
9 * Copyright 2009 Analog Devices Inc.
10 *
11 * Bugs: Enter bugs at http://blackfin.uclinux.org/
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see the file COPYING, or write
25 * to the Free Software Foundation, Inc.,
26 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
27 */
28
29#include <linux/init.h>
30#include <linux/slab.h>
31#include <linux/module.h>
32#include <linux/kernel.h>
33#include <linux/device.h>
34#include <sound/core.h>
35#include <sound/pcm.h>
36#include <sound/pcm_params.h>
37#include <sound/initval.h>
38#include <sound/soc.h>
39#include <sound/tlv.h>
40#include <sound/soc-dapm.h>
41#include <linux/spi/spi.h>
42#include "ad1938.h"
43
44/* codec private data */
45struct ad1938_priv {
46 struct snd_soc_codec codec;
47 u8 reg_cache[AD1938_NUM_REGS];
48};
49
50/* ad1938 register cache & default register settings */
51static const u8 ad1938_reg[AD1938_NUM_REGS] = {
52 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
53};
54
55static struct snd_soc_codec *ad1938_codec;
56struct snd_soc_codec_device soc_codec_dev_ad1938;
57static int ad1938_register(struct ad1938_priv *ad1938);
58static void ad1938_unregister(struct ad1938_priv *ad1938);
59
60/*
61 * AD1938 volume/mute/de-emphasis etc. controls
62 */
63static const char *ad1938_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
64
65static const struct soc_enum ad1938_deemp_enum =
66 SOC_ENUM_SINGLE(AD1938_DAC_CTRL2, 1, 4, ad1938_deemp);
67
68static const struct snd_kcontrol_new ad1938_snd_controls[] = {
69 /* DAC volume control */
70 SOC_DOUBLE_R("DAC1 Volume", AD1938_DAC_L1_VOL,
71 AD1938_DAC_R1_VOL, 0, 0xFF, 1),
72 SOC_DOUBLE_R("DAC2 Volume", AD1938_DAC_L2_VOL,
73 AD1938_DAC_R2_VOL, 0, 0xFF, 1),
74 SOC_DOUBLE_R("DAC3 Volume", AD1938_DAC_L3_VOL,
75 AD1938_DAC_R3_VOL, 0, 0xFF, 1),
76 SOC_DOUBLE_R("DAC4 Volume", AD1938_DAC_L4_VOL,
77 AD1938_DAC_R4_VOL, 0, 0xFF, 1),
78
79 /* ADC switch control */
80 SOC_DOUBLE("ADC1 Switch", AD1938_ADC_CTRL0, AD1938_ADCL1_MUTE,
81 AD1938_ADCR1_MUTE, 1, 1),
82 SOC_DOUBLE("ADC2 Switch", AD1938_ADC_CTRL0, AD1938_ADCL2_MUTE,
83 AD1938_ADCR2_MUTE, 1, 1),
84
85 /* DAC switch control */
86 SOC_DOUBLE("DAC1 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL1_MUTE,
87 AD1938_DACR1_MUTE, 1, 1),
88 SOC_DOUBLE("DAC2 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL2_MUTE,
89 AD1938_DACR2_MUTE, 1, 1),
90 SOC_DOUBLE("DAC3 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL3_MUTE,
91 AD1938_DACR3_MUTE, 1, 1),
92 SOC_DOUBLE("DAC4 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL4_MUTE,
93 AD1938_DACR4_MUTE, 1, 1),
94
95 /* ADC high-pass filter */
96 SOC_SINGLE("ADC High Pass Filter Switch", AD1938_ADC_CTRL0,
97 AD1938_ADC_HIGHPASS_FILTER, 1, 0),
98
99 /* DAC de-emphasis */
100 SOC_ENUM("Playback Deemphasis", ad1938_deemp_enum),
101};
102
103static const struct snd_soc_dapm_widget ad1938_dapm_widgets[] = {
104 SND_SOC_DAPM_DAC("DAC", "Playback", AD1938_DAC_CTRL0, 0, 1),
105 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
106 SND_SOC_DAPM_SUPPLY("PLL_PWR", AD1938_PLL_CLK_CTRL0, 0, 1, NULL, 0),
107 SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1938_ADC_CTRL0, 0, 1, NULL, 0),
108 SND_SOC_DAPM_OUTPUT("DAC1OUT"),
109 SND_SOC_DAPM_OUTPUT("DAC2OUT"),
110 SND_SOC_DAPM_OUTPUT("DAC3OUT"),
111 SND_SOC_DAPM_OUTPUT("DAC4OUT"),
112 SND_SOC_DAPM_INPUT("ADC1IN"),
113 SND_SOC_DAPM_INPUT("ADC2IN"),
114};
115
116static const struct snd_soc_dapm_route audio_paths[] = {
117 { "DAC", NULL, "PLL_PWR" },
118 { "ADC", NULL, "PLL_PWR" },
119 { "DAC", NULL, "ADC_PWR" },
120 { "ADC", NULL, "ADC_PWR" },
121 { "DAC1OUT", "DAC1 Switch", "DAC" },
122 { "DAC2OUT", "DAC2 Switch", "DAC" },
123 { "DAC3OUT", "DAC3 Switch", "DAC" },
124 { "DAC4OUT", "DAC4 Switch", "DAC" },
125 { "ADC", "ADC1 Switch", "ADC1IN" },
126 { "ADC", "ADC2 Switch", "ADC2IN" },
127};
128
129/*
130 * DAI ops entries
131 */
132
133static int ad1938_mute(struct snd_soc_dai *dai, int mute)
134{
135 struct snd_soc_codec *codec = dai->codec;
136 int reg;
137
138 reg = snd_soc_read(codec, AD1938_DAC_CTRL2);
139 reg = (mute > 0) ? reg | AD1938_DAC_MASTER_MUTE : reg &
140 (~AD1938_DAC_MASTER_MUTE);
141 snd_soc_write(codec, AD1938_DAC_CTRL2, reg);
142
143 return 0;
144}
145
146static int ad1938_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
147 unsigned int rx_mask, int slots, int width)
148{
149 struct snd_soc_codec *codec = dai->codec;
150 int dac_reg = snd_soc_read(codec, AD1938_DAC_CTRL1);
151 int adc_reg = snd_soc_read(codec, AD1938_ADC_CTRL2);
152
153 dac_reg &= ~AD1938_DAC_CHAN_MASK;
154 adc_reg &= ~AD1938_ADC_CHAN_MASK;
155
156 switch (slots) {
157 case 2:
158 dac_reg |= AD1938_DAC_2_CHANNELS << AD1938_DAC_CHAN_SHFT;
159 adc_reg |= AD1938_ADC_2_CHANNELS << AD1938_ADC_CHAN_SHFT;
160 break;
161 case 4:
162 dac_reg |= AD1938_DAC_4_CHANNELS << AD1938_DAC_CHAN_SHFT;
163 adc_reg |= AD1938_ADC_4_CHANNELS << AD1938_ADC_CHAN_SHFT;
164 break;
165 case 8:
166 dac_reg |= AD1938_DAC_8_CHANNELS << AD1938_DAC_CHAN_SHFT;
167 adc_reg |= AD1938_ADC_8_CHANNELS << AD1938_ADC_CHAN_SHFT;
168 break;
169 case 16:
170 dac_reg |= AD1938_DAC_16_CHANNELS << AD1938_DAC_CHAN_SHFT;
171 adc_reg |= AD1938_ADC_16_CHANNELS << AD1938_ADC_CHAN_SHFT;
172 break;
173 default:
174 return -EINVAL;
175 }
176
177 snd_soc_write(codec, AD1938_DAC_CTRL1, dac_reg);
178 snd_soc_write(codec, AD1938_ADC_CTRL2, adc_reg);
179
180 return 0;
181}
182
183static int ad1938_set_dai_fmt(struct snd_soc_dai *codec_dai,
184 unsigned int fmt)
185{
186 struct snd_soc_codec *codec = codec_dai->codec;
187 int adc_reg, dac_reg;
188
189 adc_reg = snd_soc_read(codec, AD1938_ADC_CTRL2);
190 dac_reg = snd_soc_read(codec, AD1938_DAC_CTRL1);
191
192 /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
193 * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
194 */
195 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
196 case SND_SOC_DAIFMT_I2S:
197 adc_reg &= ~AD1938_ADC_SERFMT_MASK;
198 adc_reg |= AD1938_ADC_SERFMT_TDM;
199 break;
200 case SND_SOC_DAIFMT_DSP_A:
201 adc_reg &= ~AD1938_ADC_SERFMT_MASK;
202 adc_reg |= AD1938_ADC_SERFMT_AUX;
203 break;
204 default:
205 return -EINVAL;
206 }
207
208 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
209 case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
210 adc_reg &= ~AD1938_ADC_LEFT_HIGH;
211 adc_reg &= ~AD1938_ADC_BCLK_INV;
212 dac_reg &= ~AD1938_DAC_LEFT_HIGH;
213 dac_reg &= ~AD1938_DAC_BCLK_INV;
214 break;
215 case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
216 adc_reg |= AD1938_ADC_LEFT_HIGH;
217 adc_reg &= ~AD1938_ADC_BCLK_INV;
218 dac_reg |= AD1938_DAC_LEFT_HIGH;
219 dac_reg &= ~AD1938_DAC_BCLK_INV;
220 break;
221 case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
222 adc_reg &= ~AD1938_ADC_LEFT_HIGH;
223 adc_reg |= AD1938_ADC_BCLK_INV;
224 dac_reg &= ~AD1938_DAC_LEFT_HIGH;
225 dac_reg |= AD1938_DAC_BCLK_INV;
226 break;
227
228 case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
229 adc_reg |= AD1938_ADC_LEFT_HIGH;
230 adc_reg |= AD1938_ADC_BCLK_INV;
231 dac_reg |= AD1938_DAC_LEFT_HIGH;
232 dac_reg |= AD1938_DAC_BCLK_INV;
233 break;
234 default:
235 return -EINVAL;
236 }
237
238 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
239 case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
240 adc_reg |= AD1938_ADC_LCR_MASTER;
241 adc_reg |= AD1938_ADC_BCLK_MASTER;
242 dac_reg |= AD1938_DAC_LCR_MASTER;
243 dac_reg |= AD1938_DAC_BCLK_MASTER;
244 break;
245 case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
246 adc_reg |= AD1938_ADC_LCR_MASTER;
247 adc_reg &= ~AD1938_ADC_BCLK_MASTER;
248 dac_reg |= AD1938_DAC_LCR_MASTER;
249 dac_reg &= ~AD1938_DAC_BCLK_MASTER;
250 break;
251 case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
252 adc_reg &= ~AD1938_ADC_LCR_MASTER;
253 adc_reg |= AD1938_ADC_BCLK_MASTER;
254 dac_reg &= ~AD1938_DAC_LCR_MASTER;
255 dac_reg |= AD1938_DAC_BCLK_MASTER;
256 break;
257 case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
258 adc_reg &= ~AD1938_ADC_LCR_MASTER;
259 adc_reg &= ~AD1938_ADC_BCLK_MASTER;
260 dac_reg &= ~AD1938_DAC_LCR_MASTER;
261 dac_reg &= ~AD1938_DAC_BCLK_MASTER;
262 break;
263 default:
264 return -EINVAL;
265 }
266
267 snd_soc_write(codec, AD1938_ADC_CTRL2, adc_reg);
268 snd_soc_write(codec, AD1938_DAC_CTRL1, dac_reg);
269
270 return 0;
271}
272
273static int ad1938_hw_params(struct snd_pcm_substream *substream,
274 struct snd_pcm_hw_params *params,
275 struct snd_soc_dai *dai)
276{
277 int word_len = 0, reg = 0;
278
279 struct snd_soc_pcm_runtime *rtd = substream->private_data;
280 struct snd_soc_device *socdev = rtd->socdev;
281 struct snd_soc_codec *codec = socdev->card->codec;
282
283 /* bit size */
284 switch (params_format(params)) {
285 case SNDRV_PCM_FORMAT_S16_LE:
286 word_len = 3;
287 break;
288 case SNDRV_PCM_FORMAT_S20_3LE:
289 word_len = 1;
290 break;
291 case SNDRV_PCM_FORMAT_S24_LE:
292 case SNDRV_PCM_FORMAT_S32_LE:
293 word_len = 0;
294 break;
295 }
296
297 reg = snd_soc_read(codec, AD1938_DAC_CTRL2);
298 reg = (reg & (~AD1938_DAC_WORD_LEN_MASK)) | word_len;
299 snd_soc_write(codec, AD1938_DAC_CTRL2, reg);
300
301 reg = snd_soc_read(codec, AD1938_ADC_CTRL1);
302 reg = (reg & (~AD1938_ADC_WORD_LEN_MASK)) | word_len;
303 snd_soc_write(codec, AD1938_ADC_CTRL1, reg);
304
305 return 0;
306}
307
308static int __devinit ad1938_spi_probe(struct spi_device *spi)
309{
310 struct snd_soc_codec *codec;
311 struct ad1938_priv *ad1938;
312
313 ad1938 = kzalloc(sizeof(struct ad1938_priv), GFP_KERNEL);
314 if (ad1938 == NULL)
315 return -ENOMEM;
316
317 codec = &ad1938->codec;
318 codec->control_data = spi;
319 codec->dev = &spi->dev;
320
321 dev_set_drvdata(&spi->dev, ad1938);
322
323 return ad1938_register(ad1938);
324}
325
326static int __devexit ad1938_spi_remove(struct spi_device *spi)
327{
328 struct ad1938_priv *ad1938 = dev_get_drvdata(&spi->dev);
329
330 ad1938_unregister(ad1938);
331 return 0;
332}
333
334static struct spi_driver ad1938_spi_driver = {
335 .driver = {
336 .name = "ad1938",
337 .owner = THIS_MODULE,
338 },
339 .probe = ad1938_spi_probe,
340 .remove = __devexit_p(ad1938_spi_remove),
341};
342
343static struct snd_soc_dai_ops ad1938_dai_ops = {
344 .hw_params = ad1938_hw_params,
345 .digital_mute = ad1938_mute,
346 .set_tdm_slot = ad1938_set_tdm_slot,
347 .set_fmt = ad1938_set_dai_fmt,
348};
349
350/* codec DAI instance */
351struct snd_soc_dai ad1938_dai = {
352 .name = "AD1938",
353 .playback = {
354 .stream_name = "Playback",
355 .channels_min = 2,
356 .channels_max = 8,
357 .rates = SNDRV_PCM_RATE_48000,
358 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
359 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
360 },
361 .capture = {
362 .stream_name = "Capture",
363 .channels_min = 2,
364 .channels_max = 4,
365 .rates = SNDRV_PCM_RATE_48000,
366 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE |
367 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE,
368 },
369 .ops = &ad1938_dai_ops,
370};
371EXPORT_SYMBOL_GPL(ad1938_dai);
372
373static int ad1938_register(struct ad1938_priv *ad1938)
374{
375 int ret;
376 struct snd_soc_codec *codec = &ad1938->codec;
377
378 if (ad1938_codec) {
379 dev_err(codec->dev, "Another ad1938 is registered\n");
380 return -EINVAL;
381 }
382
383 mutex_init(&codec->mutex);
384 INIT_LIST_HEAD(&codec->dapm_widgets);
385 INIT_LIST_HEAD(&codec->dapm_paths);
386 codec->private_data = ad1938;
387 codec->reg_cache = ad1938->reg_cache;
388 codec->reg_cache_size = AD1938_NUM_REGS;
389 codec->name = "AD1938";
390 codec->owner = THIS_MODULE;
391 codec->dai = &ad1938_dai;
392 codec->num_dai = 1;
393 INIT_LIST_HEAD(&codec->dapm_widgets);
394 INIT_LIST_HEAD(&codec->dapm_paths);
395
396 ad1938_dai.dev = codec->dev;
397 ad1938_codec = codec;
398
399 memcpy(codec->reg_cache, ad1938_reg, AD1938_NUM_REGS);
400
401 ret = snd_soc_codec_set_cache_io(codec, 16, 8, SND_SOC_SPI);
402 if (ret < 0) {
403 dev_err(codec->dev, "failed to set cache I/O: %d\n",
404 ret);
405 kfree(ad1938);
406 return ret;
407 }
408
409 /* default setting for ad1938 */
410
411 /* unmute dac channels */
412 snd_soc_write(codec, AD1938_DAC_CHNL_MUTE, 0x0);
413 /* de-emphasis: 48kHz, powedown dac */
414 snd_soc_write(codec, AD1938_DAC_CTRL2, 0x1A);
415 /* powerdown dac, dac in tdm mode */
416 snd_soc_write(codec, AD1938_DAC_CTRL0, 0x41);
417 /* high-pass filter enable */
418 snd_soc_write(codec, AD1938_ADC_CTRL0, 0x3);
419 /* sata delay=1, adc aux mode */
420 snd_soc_write(codec, AD1938_ADC_CTRL1, 0x43);
421 /* pll input: mclki/xi */
422 snd_soc_write(codec, AD1938_PLL_CLK_CTRL0, 0x9D);
423 snd_soc_write(codec, AD1938_PLL_CLK_CTRL1, 0x04);
424
425 ret = snd_soc_register_codec(codec);
426 if (ret != 0) {
427 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
428 kfree(ad1938);
429 return ret;
430 }
431
432 ret = snd_soc_register_dai(&ad1938_dai);
433 if (ret != 0) {
434 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
435 snd_soc_unregister_codec(codec);
436 kfree(ad1938);
437 return ret;
438 }
439
440 return 0;
441}
442
443static void ad1938_unregister(struct ad1938_priv *ad1938)
444{
445 snd_soc_unregister_dai(&ad1938_dai);
446 snd_soc_unregister_codec(&ad1938->codec);
447 kfree(ad1938);
448 ad1938_codec = NULL;
449}
450
451static int ad1938_probe(struct platform_device *pdev)
452{
453 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
454 struct snd_soc_codec *codec;
455 int ret = 0;
456
457 if (ad1938_codec == NULL) {
458 dev_err(&pdev->dev, "Codec device not registered\n");
459 return -ENODEV;
460 }
461
462 socdev->card->codec = ad1938_codec;
463 codec = ad1938_codec;
464
465 /* register pcms */
466 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
467 if (ret < 0) {
468 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
469 goto pcm_err;
470 }
471
472 snd_soc_add_controls(codec, ad1938_snd_controls,
473 ARRAY_SIZE(ad1938_snd_controls));
474 snd_soc_dapm_new_controls(codec, ad1938_dapm_widgets,
475 ARRAY_SIZE(ad1938_dapm_widgets));
476 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
477
478
479pcm_err:
480 return ret;
481}
482
483/* power down chip */
484static int ad1938_remove(struct platform_device *pdev)
485{
486 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
487
488 snd_soc_free_pcms(socdev);
489 snd_soc_dapm_free(socdev);
490
491 return 0;
492}
493
494struct snd_soc_codec_device soc_codec_dev_ad1938 = {
495 .probe = ad1938_probe,
496 .remove = ad1938_remove,
497};
498EXPORT_SYMBOL_GPL(soc_codec_dev_ad1938);
499
500static int __init ad1938_init(void)
501{
502 int ret;
503
504 ret = spi_register_driver(&ad1938_spi_driver);
505 if (ret != 0) {
506 printk(KERN_ERR "Failed to register ad1938 SPI driver: %d\n",
507 ret);
508 }
509
510 return ret;
511}
512module_init(ad1938_init);
513
514static void __exit ad1938_exit(void)
515{
516 spi_unregister_driver(&ad1938_spi_driver);
517}
518module_exit(ad1938_exit);
519
520MODULE_DESCRIPTION("ASoC ad1938 driver");
521MODULE_AUTHOR("Barry Song ");
522MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-16 10:56:45 -0500