2 * Audio Codec driver supporting:
3 * AD1835A, AD1836, AD1837A, AD1838A, AD1839A
5 * Copyright 2009-2011 Analog Devices Inc.
7 * Licensed under the GPL-2 or later.
10 #include <linux/init.h>
11 #include <linux/slab.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/device.h>
15 #include <sound/core.h>
16 #include <sound/pcm.h>
17 #include <sound/pcm_params.h>
18 #include <sound/initval.h>
19 #include <sound/soc.h>
20 #include <sound/tlv.h>
21 #include <linux/spi/spi.h>
30 /* codec private data */
32 enum ad1836_type type;
36 * AD1836 volume/mute/de-emphasis etc. controls
38 static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
40 static const struct soc_enum ad1836_deemp_enum =
41 SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);
43 #define AD1836_DAC_VOLUME(x) \
44 SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
45 AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
47 #define AD1836_DAC_SWITCH(x) \
48 SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
49 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
51 #define AD1836_ADC_SWITCH(x) \
52 SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
53 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
55 static const struct snd_kcontrol_new ad183x_dac_controls[] = {
66 static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
67 SND_SOC_DAPM_OUTPUT("DAC1OUT"),
68 SND_SOC_DAPM_OUTPUT("DAC2OUT"),
69 SND_SOC_DAPM_OUTPUT("DAC3OUT"),
70 SND_SOC_DAPM_OUTPUT("DAC4OUT"),
73 static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
74 { "DAC1OUT", NULL, "DAC" },
75 { "DAC2OUT", NULL, "DAC" },
76 { "DAC3OUT", NULL, "DAC" },
77 { "DAC4OUT", NULL, "DAC" },
80 static const struct snd_kcontrol_new ad183x_adc_controls[] = {
86 static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
87 SND_SOC_DAPM_INPUT("ADC1IN"),
88 SND_SOC_DAPM_INPUT("ADC2IN"),
91 static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
92 { "ADC", NULL, "ADC1IN" },
93 { "ADC", NULL, "ADC2IN" },
96 static const struct snd_kcontrol_new ad183x_controls[] = {
97 /* ADC high-pass filter */
98 SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
99 AD1836_ADC_HIGHPASS_FILTER, 1, 0),
101 /* DAC de-emphasis */
102 SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
105 static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
106 SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
107 AD1836_DAC_POWERDOWN, 1),
108 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
109 SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
110 AD1836_ADC_POWERDOWN, 1, NULL, 0),
113 static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
114 { "DAC", NULL, "ADC_PWR" },
115 { "ADC", NULL, "ADC_PWR" },
118 static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
120 static const struct snd_kcontrol_new ad1836_controls[] = {
121 SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
129 static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
132 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
133 /* at present, we support adc aux mode to interface with
134 * blackfin sport tdm mode
136 case SND_SOC_DAIFMT_DSP_A:
142 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
143 case SND_SOC_DAIFMT_IB_IF:
149 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
150 /* ALCLK,ABCLK are both output, AD1836 can only be master */
151 case SND_SOC_DAIFMT_CBM_CFM:
160 static int ad1836_hw_params(struct snd_pcm_substream *substream,
161 struct snd_pcm_hw_params *params,
162 struct snd_soc_dai *dai)
166 struct snd_soc_pcm_runtime *rtd = substream->private_data;
167 struct snd_soc_codec *codec = rtd->codec;
170 switch (params_format(params)) {
171 case SNDRV_PCM_FORMAT_S16_LE:
172 word_len = AD1836_WORD_LEN_16;
174 case SNDRV_PCM_FORMAT_S20_3LE:
175 word_len = AD1836_WORD_LEN_20;
177 case SNDRV_PCM_FORMAT_S24_LE:
178 case SNDRV_PCM_FORMAT_S32_LE:
179 word_len = AD1836_WORD_LEN_24;
183 snd_soc_update_bits(codec, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK,
184 word_len << AD1836_DAC_WORD_LEN_OFFSET);
186 snd_soc_update_bits(codec, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK,
187 word_len << AD1836_ADC_WORD_OFFSET);
193 static int ad1836_soc_suspend(struct snd_soc_codec *codec,
196 /* reset clock control mode */
197 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
198 AD1836_ADC_SERFMT_MASK, 0);
201 static int ad1836_soc_resume(struct snd_soc_codec *codec)
203 /* restore clock control mode */
204 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
205 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
208 #define ad1836_soc_suspend NULL
209 #define ad1836_soc_resume NULL
212 static struct snd_soc_dai_ops ad1836_dai_ops = {
213 .hw_params = ad1836_hw_params,
214 .set_fmt = ad1836_set_dai_fmt,
217 #define AD183X_DAI(_name, num_dacs, num_adcs) \
219 .name = _name "-hifi", \
221 .stream_name = "Playback", \
223 .channels_max = (num_dacs) * 2, \
224 .rates = SNDRV_PCM_RATE_48000, \
225 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
226 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
229 .stream_name = "Capture", \
231 .channels_max = (num_adcs) * 2, \
232 .rates = SNDRV_PCM_RATE_48000, \
233 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
234 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
236 .ops = &ad1836_dai_ops, \
239 static struct snd_soc_dai_driver ad183x_dais[] = {
240 [AD1835] = AD183X_DAI("ad1835", 4, 1),
241 [AD1836] = AD183X_DAI("ad1836", 3, 2),
242 [AD1838] = AD183X_DAI("ad1838", 3, 1),
245 static int ad1836_probe(struct snd_soc_codec *codec)
247 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
248 struct snd_soc_dapm_context *dapm = &codec->dapm;
249 int num_dacs, num_adcs;
253 num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
254 num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
256 ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
258 dev_err(codec->dev, "failed to set cache I/O: %d\n",
263 /* default setting for ad1836 */
264 /* de-emphasis: 48kHz, power-on dac */
265 snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
266 /* unmute dac channels */
267 snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
268 /* high-pass filter enable, power-on adc */
269 snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
270 /* unmute adc channles, adc aux mode */
271 snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
273 for (i = 1; i <= num_dacs; ++i) {
274 snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF);
275 snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF);
278 if (ad1836->type == AD1836) {
279 /* left/right diff:PGA/MUX */
280 snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
281 ret = snd_soc_add_controls(codec, ad1836_controls,
282 ARRAY_SIZE(ad1836_controls));
286 snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00);
289 ret = snd_soc_add_controls(codec, ad183x_dac_controls, num_dacs * 2);
293 ret = snd_soc_add_controls(codec, ad183x_adc_controls, num_adcs);
297 ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
301 ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
305 ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
309 ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
316 /* power down chip */
317 static int ad1836_remove(struct snd_soc_codec *codec)
319 /* reset clock control mode */
320 return snd_soc_update_bits(codec, AD1836_ADC_CTRL2,
321 AD1836_ADC_SERFMT_MASK, 0);
324 static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
325 .probe = ad1836_probe,
326 .remove = ad1836_remove,
327 .suspend = ad1836_soc_suspend,
328 .resume = ad1836_soc_resume,
329 .reg_cache_size = AD1836_NUM_REGS,
330 .reg_word_size = sizeof(u16),
332 .controls = ad183x_controls,
333 .num_controls = ARRAY_SIZE(ad183x_controls),
334 .dapm_widgets = ad183x_dapm_widgets,
335 .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
336 .dapm_routes = ad183x_dapm_routes,
337 .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
340 static int __devinit ad1836_spi_probe(struct spi_device *spi)
342 struct ad1836_priv *ad1836;
345 ad1836 = kzalloc(sizeof(struct ad1836_priv), GFP_KERNEL);
349 ad1836->type = spi_get_device_id(spi)->driver_data;
351 spi_set_drvdata(spi, ad1836);
353 ret = snd_soc_register_codec(&spi->dev,
354 &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
360 static int __devexit ad1836_spi_remove(struct spi_device *spi)
362 snd_soc_unregister_codec(&spi->dev);
363 kfree(spi_get_drvdata(spi));
366 static const struct spi_device_id ad1836_ids[] = {
367 { "ad1835", AD1835 },
368 { "ad1836", AD1836 },
369 { "ad1837", AD1835 },
370 { "ad1838", AD1838 },
371 { "ad1839", AD1838 },
374 MODULE_DEVICE_TABLE(spi, ad1836_ids);
376 static struct spi_driver ad1836_spi_driver = {
379 .owner = THIS_MODULE,
381 .probe = ad1836_spi_probe,
382 .remove = __devexit_p(ad1836_spi_remove),
383 .id_table = ad1836_ids,
386 static int __init ad1836_init(void)
388 return spi_register_driver(&ad1836_spi_driver);
390 module_init(ad1836_init);
392 static void __exit ad1836_exit(void)
394 spi_unregister_driver(&ad1836_spi_driver);
396 module_exit(ad1836_exit);
398 MODULE_DESCRIPTION("ASoC ad1836 driver");
399 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
400 MODULE_LICENSE("GPL");