Linux 3.8-rc7
[cris-mirror.git] / sound / soc / codecs / ad1836.c
blob9a92b7962f41b67e3ba8461d1a88c584ef4822b0
1 /*
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.
8 */
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>
22 #include <linux/regmap.h>
24 #include "ad1836.h"
26 enum ad1836_type {
27 AD1835,
28 AD1836,
29 AD1838,
32 /* codec private data */
33 struct ad1836_priv {
34 enum ad1836_type type;
35 struct regmap *regmap;
39 * AD1836 volume/mute/de-emphasis etc. controls
41 static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
43 static const struct soc_enum ad1836_deemp_enum =
44 SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp);
46 #define AD1836_DAC_VOLUME(x) \
47 SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \
48 AD1836_DAC_R_VOL(x), 0, 0x3FF, 0)
50 #define AD1836_DAC_SWITCH(x) \
51 SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \
52 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
54 #define AD1836_ADC_SWITCH(x) \
55 SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \
56 AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1)
58 static const struct snd_kcontrol_new ad183x_dac_controls[] = {
59 AD1836_DAC_VOLUME(1),
60 AD1836_DAC_SWITCH(1),
61 AD1836_DAC_VOLUME(2),
62 AD1836_DAC_SWITCH(2),
63 AD1836_DAC_VOLUME(3),
64 AD1836_DAC_SWITCH(3),
65 AD1836_DAC_VOLUME(4),
66 AD1836_DAC_SWITCH(4),
69 static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = {
70 SND_SOC_DAPM_OUTPUT("DAC1OUT"),
71 SND_SOC_DAPM_OUTPUT("DAC2OUT"),
72 SND_SOC_DAPM_OUTPUT("DAC3OUT"),
73 SND_SOC_DAPM_OUTPUT("DAC4OUT"),
76 static const struct snd_soc_dapm_route ad183x_dac_routes[] = {
77 { "DAC1OUT", NULL, "DAC" },
78 { "DAC2OUT", NULL, "DAC" },
79 { "DAC3OUT", NULL, "DAC" },
80 { "DAC4OUT", NULL, "DAC" },
83 static const struct snd_kcontrol_new ad183x_adc_controls[] = {
84 AD1836_ADC_SWITCH(1),
85 AD1836_ADC_SWITCH(2),
86 AD1836_ADC_SWITCH(3),
89 static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = {
90 SND_SOC_DAPM_INPUT("ADC1IN"),
91 SND_SOC_DAPM_INPUT("ADC2IN"),
94 static const struct snd_soc_dapm_route ad183x_adc_routes[] = {
95 { "ADC", NULL, "ADC1IN" },
96 { "ADC", NULL, "ADC2IN" },
99 static const struct snd_kcontrol_new ad183x_controls[] = {
100 /* ADC high-pass filter */
101 SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1,
102 AD1836_ADC_HIGHPASS_FILTER, 1, 0),
104 /* DAC de-emphasis */
105 SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum),
108 static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = {
109 SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1,
110 AD1836_DAC_POWERDOWN, 1),
111 SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
112 SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1,
113 AD1836_ADC_POWERDOWN, 1, NULL, 0),
116 static const struct snd_soc_dapm_route ad183x_dapm_routes[] = {
117 { "DAC", NULL, "ADC_PWR" },
118 { "ADC", NULL, "ADC_PWR" },
121 static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0);
123 static const struct snd_kcontrol_new ad1836_controls[] = {
124 SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0,
125 ad1836_in_tlv),
129 * DAI ops entries
132 static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai,
133 unsigned int fmt)
135 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
136 /* at present, we support adc aux mode to interface with
137 * blackfin sport tdm mode
139 case SND_SOC_DAIFMT_DSP_A:
140 break;
141 default:
142 return -EINVAL;
145 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
146 case SND_SOC_DAIFMT_IB_IF:
147 break;
148 default:
149 return -EINVAL;
152 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
153 /* ALCLK,ABCLK are both output, AD1836 can only be master */
154 case SND_SOC_DAIFMT_CBM_CFM:
155 break;
156 default:
157 return -EINVAL;
160 return 0;
163 static int ad1836_hw_params(struct snd_pcm_substream *substream,
164 struct snd_pcm_hw_params *params,
165 struct snd_soc_dai *dai)
167 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(dai->codec);
168 int word_len = 0;
170 /* bit size */
171 switch (params_format(params)) {
172 case SNDRV_PCM_FORMAT_S16_LE:
173 word_len = AD1836_WORD_LEN_16;
174 break;
175 case SNDRV_PCM_FORMAT_S20_3LE:
176 word_len = AD1836_WORD_LEN_20;
177 break;
178 case SNDRV_PCM_FORMAT_S24_LE:
179 case SNDRV_PCM_FORMAT_S32_LE:
180 word_len = AD1836_WORD_LEN_24;
181 break;
184 regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
185 AD1836_DAC_WORD_LEN_MASK,
186 word_len << AD1836_DAC_WORD_LEN_OFFSET);
188 regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
189 AD1836_ADC_WORD_LEN_MASK,
190 word_len << AD1836_ADC_WORD_OFFSET);
192 return 0;
195 static const struct snd_soc_dai_ops ad1836_dai_ops = {
196 .hw_params = ad1836_hw_params,
197 .set_fmt = ad1836_set_dai_fmt,
200 #define AD183X_DAI(_name, num_dacs, num_adcs) \
202 .name = _name "-hifi", \
203 .playback = { \
204 .stream_name = "Playback", \
205 .channels_min = 2, \
206 .channels_max = (num_dacs) * 2, \
207 .rates = SNDRV_PCM_RATE_48000, \
208 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
209 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
210 }, \
211 .capture = { \
212 .stream_name = "Capture", \
213 .channels_min = 2, \
214 .channels_max = (num_adcs) * 2, \
215 .rates = SNDRV_PCM_RATE_48000, \
216 .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \
217 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \
218 }, \
219 .ops = &ad1836_dai_ops, \
222 static struct snd_soc_dai_driver ad183x_dais[] = {
223 [AD1835] = AD183X_DAI("ad1835", 4, 1),
224 [AD1836] = AD183X_DAI("ad1836", 3, 2),
225 [AD1838] = AD183X_DAI("ad1838", 3, 1),
228 #ifdef CONFIG_PM
229 static int ad1836_suspend(struct snd_soc_codec *codec)
231 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
232 /* reset clock control mode */
233 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
234 AD1836_ADC_SERFMT_MASK, 0);
237 static int ad1836_resume(struct snd_soc_codec *codec)
239 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
240 /* restore clock control mode */
241 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
242 AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX);
244 #else
245 #define ad1836_suspend NULL
246 #define ad1836_resume NULL
247 #endif
249 static int ad1836_probe(struct snd_soc_codec *codec)
251 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
252 struct snd_soc_dapm_context *dapm = &codec->dapm;
253 int num_dacs, num_adcs;
254 int ret = 0;
255 int i;
257 num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2;
258 num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2;
260 /* default setting for ad1836 */
261 /* de-emphasis: 48kHz, power-on dac */
262 regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300);
263 /* unmute dac channels */
264 regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0);
265 /* high-pass filter enable, power-on adc */
266 regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100);
267 /* unmute adc channles, adc aux mode */
268 regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180);
269 /* volume */
270 for (i = 1; i <= num_dacs; ++i) {
271 regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF);
272 regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF);
275 if (ad1836->type == AD1836) {
276 /* left/right diff:PGA/MUX */
277 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A);
278 ret = snd_soc_add_codec_controls(codec, ad1836_controls,
279 ARRAY_SIZE(ad1836_controls));
280 if (ret)
281 return ret;
282 } else {
283 regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x00);
286 ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2);
287 if (ret)
288 return ret;
290 ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs);
291 if (ret)
292 return ret;
294 ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs);
295 if (ret)
296 return ret;
298 ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs);
299 if (ret)
300 return ret;
302 ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs);
303 if (ret)
304 return ret;
306 ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs);
307 if (ret)
308 return ret;
310 return ret;
313 /* power down chip */
314 static int ad1836_remove(struct snd_soc_codec *codec)
316 struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
317 /* reset clock control mode */
318 return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
319 AD1836_ADC_SERFMT_MASK, 0);
322 static struct snd_soc_codec_driver soc_codec_dev_ad1836 = {
323 .probe = ad1836_probe,
324 .remove = ad1836_remove,
325 .suspend = ad1836_suspend,
326 .resume = ad1836_resume,
328 .controls = ad183x_controls,
329 .num_controls = ARRAY_SIZE(ad183x_controls),
330 .dapm_widgets = ad183x_dapm_widgets,
331 .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets),
332 .dapm_routes = ad183x_dapm_routes,
333 .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes),
336 static const struct reg_default ad1836_reg_defaults[] = {
337 { AD1836_DAC_CTRL1, 0x0000 },
338 { AD1836_DAC_CTRL2, 0x0000 },
339 { AD1836_DAC_L_VOL(0), 0x0000 },
340 { AD1836_DAC_R_VOL(0), 0x0000 },
341 { AD1836_DAC_L_VOL(1), 0x0000 },
342 { AD1836_DAC_R_VOL(1), 0x0000 },
343 { AD1836_DAC_L_VOL(2), 0x0000 },
344 { AD1836_DAC_R_VOL(2), 0x0000 },
345 { AD1836_DAC_L_VOL(3), 0x0000 },
346 { AD1836_DAC_R_VOL(3), 0x0000 },
347 { AD1836_ADC_CTRL1, 0x0000 },
348 { AD1836_ADC_CTRL2, 0x0000 },
349 { AD1836_ADC_CTRL3, 0x0000 },
352 static const struct regmap_config ad1836_regmap_config = {
353 .val_bits = 12,
354 .reg_bits = 4,
355 .read_flag_mask = 0x08,
357 .max_register = AD1836_ADC_CTRL3,
358 .reg_defaults = ad1836_reg_defaults,
359 .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults),
360 .cache_type = REGCACHE_RBTREE,
363 static int ad1836_spi_probe(struct spi_device *spi)
365 struct ad1836_priv *ad1836;
366 int ret;
368 ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv),
369 GFP_KERNEL);
370 if (ad1836 == NULL)
371 return -ENOMEM;
373 ad1836->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config);
374 if (IS_ERR(ad1836->regmap))
375 return PTR_ERR(ad1836->regmap);
377 ad1836->type = spi_get_device_id(spi)->driver_data;
379 spi_set_drvdata(spi, ad1836);
381 ret = snd_soc_register_codec(&spi->dev,
382 &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1);
383 return ret;
386 static int ad1836_spi_remove(struct spi_device *spi)
388 snd_soc_unregister_codec(&spi->dev);
389 return 0;
392 static const struct spi_device_id ad1836_ids[] = {
393 { "ad1835", AD1835 },
394 { "ad1836", AD1836 },
395 { "ad1837", AD1835 },
396 { "ad1838", AD1838 },
397 { "ad1839", AD1838 },
398 { },
400 MODULE_DEVICE_TABLE(spi, ad1836_ids);
402 static struct spi_driver ad1836_spi_driver = {
403 .driver = {
404 .name = "ad1836",
405 .owner = THIS_MODULE,
407 .probe = ad1836_spi_probe,
408 .remove = ad1836_spi_remove,
409 .id_table = ad1836_ids,
412 module_spi_driver(ad1836_spi_driver);
414 MODULE_DESCRIPTION("ASoC ad1836 driver");
415 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
416 MODULE_LICENSE("GPL");