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7eaae41e BS |
1 | /* |
2 | * File: sound/soc/codecs/ad1836.c | |
3 | * Author: Barry Song <Barry.Song@analog.com> | |
4 | * | |
5 | * Created: Aug 04 2009 | |
6 | * Description: Driver for AD1836 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 | ||
19 | #include <linux/init.h> | |
5a0e3ad6 | 20 | #include <linux/slab.h> |
7eaae41e | 21 | #include <linux/module.h> |
7eaae41e BS |
22 | #include <linux/kernel.h> |
23 | #include <linux/device.h> | |
24 | #include <sound/core.h> | |
25 | #include <sound/pcm.h> | |
26 | #include <sound/pcm_params.h> | |
27 | #include <sound/initval.h> | |
28 | #include <sound/soc.h> | |
29 | #include <sound/tlv.h> | |
7eaae41e BS |
30 | #include <linux/spi/spi.h> |
31 | #include "ad1836.h" | |
32 | ||
33 | /* codec private data */ | |
34 | struct ad1836_priv { | |
f0fba2ad LG |
35 | enum snd_soc_control_type control_type; |
36 | void *control_data; | |
7eaae41e BS |
37 | }; |
38 | ||
7eaae41e BS |
39 | /* |
40 | * AD1836 volume/mute/de-emphasis etc. controls | |
41 | */ | |
42 | static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"}; | |
43 | ||
44 | static const struct soc_enum ad1836_deemp_enum = | |
45 | SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp); | |
46 | ||
47 | static const struct snd_kcontrol_new ad1836_snd_controls[] = { | |
48 | /* DAC volume control */ | |
49 | SOC_DOUBLE_R("DAC1 Volume", AD1836_DAC_L1_VOL, | |
50 | AD1836_DAC_R1_VOL, 0, 0x3FF, 0), | |
51 | SOC_DOUBLE_R("DAC2 Volume", AD1836_DAC_L2_VOL, | |
52 | AD1836_DAC_R2_VOL, 0, 0x3FF, 0), | |
53 | SOC_DOUBLE_R("DAC3 Volume", AD1836_DAC_L3_VOL, | |
54 | AD1836_DAC_R3_VOL, 0, 0x3FF, 0), | |
55 | ||
56 | /* ADC switch control */ | |
57 | SOC_DOUBLE("ADC1 Switch", AD1836_ADC_CTRL2, AD1836_ADCL1_MUTE, | |
58 | AD1836_ADCR1_MUTE, 1, 1), | |
59 | SOC_DOUBLE("ADC2 Switch", AD1836_ADC_CTRL2, AD1836_ADCL2_MUTE, | |
60 | AD1836_ADCR2_MUTE, 1, 1), | |
61 | ||
62 | /* DAC switch control */ | |
63 | SOC_DOUBLE("DAC1 Switch", AD1836_DAC_CTRL2, AD1836_DACL1_MUTE, | |
64 | AD1836_DACR1_MUTE, 1, 1), | |
65 | SOC_DOUBLE("DAC2 Switch", AD1836_DAC_CTRL2, AD1836_DACL2_MUTE, | |
66 | AD1836_DACR2_MUTE, 1, 1), | |
67 | SOC_DOUBLE("DAC3 Switch", AD1836_DAC_CTRL2, AD1836_DACL3_MUTE, | |
68 | AD1836_DACR3_MUTE, 1, 1), | |
69 | ||
70 | /* ADC high-pass filter */ | |
71 | SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1, | |
72 | AD1836_ADC_HIGHPASS_FILTER, 1, 0), | |
73 | ||
74 | /* DAC de-emphasis */ | |
75 | SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum), | |
76 | }; | |
77 | ||
78 | static const struct snd_soc_dapm_widget ad1836_dapm_widgets[] = { | |
79 | SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1, | |
80 | AD1836_DAC_POWERDOWN, 1), | |
81 | SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), | |
82 | SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1, | |
83 | AD1836_ADC_POWERDOWN, 1, NULL, 0), | |
84 | SND_SOC_DAPM_OUTPUT("DAC1OUT"), | |
85 | SND_SOC_DAPM_OUTPUT("DAC2OUT"), | |
86 | SND_SOC_DAPM_OUTPUT("DAC3OUT"), | |
87 | SND_SOC_DAPM_INPUT("ADC1IN"), | |
88 | SND_SOC_DAPM_INPUT("ADC2IN"), | |
89 | }; | |
90 | ||
91 | static const struct snd_soc_dapm_route audio_paths[] = { | |
92 | { "DAC", NULL, "ADC_PWR" }, | |
93 | { "ADC", NULL, "ADC_PWR" }, | |
94 | { "DAC1OUT", "DAC1 Switch", "DAC" }, | |
95 | { "DAC2OUT", "DAC2 Switch", "DAC" }, | |
96 | { "DAC3OUT", "DAC3 Switch", "DAC" }, | |
97 | { "ADC", "ADC1 Switch", "ADC1IN" }, | |
98 | { "ADC", "ADC2 Switch", "ADC2IN" }, | |
99 | }; | |
100 | ||
101 | /* | |
102 | * DAI ops entries | |
103 | */ | |
104 | ||
105 | static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
106 | unsigned int fmt) | |
107 | { | |
108 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
109 | /* at present, we support adc aux mode to interface with | |
110 | * blackfin sport tdm mode | |
111 | */ | |
112 | case SND_SOC_DAIFMT_DSP_A: | |
113 | break; | |
114 | default: | |
115 | return -EINVAL; | |
116 | } | |
117 | ||
118 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
119 | case SND_SOC_DAIFMT_IB_IF: | |
120 | break; | |
121 | default: | |
122 | return -EINVAL; | |
123 | } | |
124 | ||
125 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
126 | /* ALCLK,ABCLK are both output, AD1836 can only be master */ | |
127 | case SND_SOC_DAIFMT_CBM_CFM: | |
128 | break; | |
129 | default: | |
130 | return -EINVAL; | |
131 | } | |
132 | ||
133 | return 0; | |
134 | } | |
135 | ||
136 | static int ad1836_hw_params(struct snd_pcm_substream *substream, | |
137 | struct snd_pcm_hw_params *params, | |
138 | struct snd_soc_dai *dai) | |
139 | { | |
140 | int word_len = 0; | |
141 | ||
142 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad | 143 | struct snd_soc_codec *codec = rtd->codec; |
7eaae41e BS |
144 | |
145 | /* bit size */ | |
146 | switch (params_format(params)) { | |
147 | case SNDRV_PCM_FORMAT_S16_LE: | |
148 | word_len = 3; | |
149 | break; | |
150 | case SNDRV_PCM_FORMAT_S20_3LE: | |
151 | word_len = 1; | |
152 | break; | |
153 | case SNDRV_PCM_FORMAT_S24_LE: | |
154 | case SNDRV_PCM_FORMAT_S32_LE: | |
155 | word_len = 0; | |
156 | break; | |
157 | } | |
158 | ||
159 | snd_soc_update_bits(codec, AD1836_DAC_CTRL1, | |
160 | AD1836_DAC_WORD_LEN_MASK, word_len); | |
161 | ||
162 | snd_soc_update_bits(codec, AD1836_ADC_CTRL2, | |
163 | AD1836_ADC_WORD_LEN_MASK, word_len); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
84549d23 | 168 | #ifdef CONFIG_PM |
f0fba2ad | 169 | static int ad1836_soc_suspend(struct snd_soc_codec *codec, |
84549d23 BS |
170 | pm_message_t state) |
171 | { | |
84549d23 | 172 | /* reset clock control mode */ |
63b62ab0 | 173 | u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2); |
84549d23 BS |
174 | adc_ctrl2 &= ~AD1836_ADC_SERFMT_MASK; |
175 | ||
63b62ab0 | 176 | return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2); |
84549d23 BS |
177 | } |
178 | ||
f0fba2ad | 179 | static int ad1836_soc_resume(struct snd_soc_codec *codec) |
84549d23 | 180 | { |
84549d23 | 181 | /* restore clock control mode */ |
63b62ab0 | 182 | u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2); |
84549d23 BS |
183 | adc_ctrl2 |= AD1836_ADC_AUX; |
184 | ||
63b62ab0 | 185 | return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2); |
84549d23 BS |
186 | } |
187 | #else | |
188 | #define ad1836_soc_suspend NULL | |
189 | #define ad1836_soc_resume NULL | |
190 | #endif | |
191 | ||
7eaae41e BS |
192 | static struct snd_soc_dai_ops ad1836_dai_ops = { |
193 | .hw_params = ad1836_hw_params, | |
194 | .set_fmt = ad1836_set_dai_fmt, | |
195 | }; | |
196 | ||
197 | /* codec DAI instance */ | |
f0fba2ad LG |
198 | static struct snd_soc_dai_driver ad1836_dai = { |
199 | .name = "ad1836-hifi", | |
7eaae41e BS |
200 | .playback = { |
201 | .stream_name = "Playback", | |
202 | .channels_min = 2, | |
203 | .channels_max = 6, | |
204 | .rates = SNDRV_PCM_RATE_48000, | |
205 | .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | | |
206 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, | |
207 | }, | |
208 | .capture = { | |
209 | .stream_name = "Capture", | |
210 | .channels_min = 2, | |
211 | .channels_max = 4, | |
212 | .rates = SNDRV_PCM_RATE_48000, | |
213 | .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | | |
214 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, | |
215 | }, | |
216 | .ops = &ad1836_dai_ops, | |
217 | }; | |
7eaae41e | 218 | |
f0fba2ad | 219 | static int ad1836_probe(struct snd_soc_codec *codec) |
7eaae41e | 220 | { |
f0fba2ad | 221 | struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); |
ce6120cc | 222 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
f0fba2ad | 223 | int ret = 0; |
7eaae41e | 224 | |
f0fba2ad | 225 | codec->control_data = ad1836->control_data; |
63b62ab0 BS |
226 | ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI); |
227 | if (ret < 0) { | |
228 | dev_err(codec->dev, "failed to set cache I/O: %d\n", | |
229 | ret); | |
63b62ab0 BS |
230 | return ret; |
231 | } | |
232 | ||
7eaae41e BS |
233 | /* default setting for ad1836 */ |
234 | /* de-emphasis: 48kHz, power-on dac */ | |
63b62ab0 | 235 | snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300); |
7eaae41e | 236 | /* unmute dac channels */ |
63b62ab0 | 237 | snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0); |
7eaae41e | 238 | /* high-pass filter enable, power-on adc */ |
63b62ab0 | 239 | snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100); |
7eaae41e | 240 | /* unmute adc channles, adc aux mode */ |
63b62ab0 | 241 | snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180); |
7eaae41e | 242 | /* left/right diff:PGA/MUX */ |
63b62ab0 | 243 | snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A); |
7eaae41e | 244 | /* volume */ |
63b62ab0 BS |
245 | snd_soc_write(codec, AD1836_DAC_L1_VOL, 0x3FF); |
246 | snd_soc_write(codec, AD1836_DAC_R1_VOL, 0x3FF); | |
247 | snd_soc_write(codec, AD1836_DAC_L2_VOL, 0x3FF); | |
248 | snd_soc_write(codec, AD1836_DAC_R2_VOL, 0x3FF); | |
249 | snd_soc_write(codec, AD1836_DAC_L3_VOL, 0x3FF); | |
250 | snd_soc_write(codec, AD1836_DAC_R3_VOL, 0x3FF); | |
7eaae41e | 251 | |
7eaae41e BS |
252 | snd_soc_add_controls(codec, ad1836_snd_controls, |
253 | ARRAY_SIZE(ad1836_snd_controls)); | |
ce6120cc | 254 | snd_soc_dapm_new_controls(dapm, ad1836_dapm_widgets, |
7eaae41e | 255 | ARRAY_SIZE(ad1836_dapm_widgets)); |
ce6120cc | 256 | snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths)); |
7eaae41e | 257 | |
7eaae41e BS |
258 | return ret; |
259 | } | |
260 | ||
261 | /* power down chip */ | |
f0fba2ad | 262 | static int ad1836_remove(struct snd_soc_codec *codec) |
7eaae41e | 263 | { |
f0fba2ad LG |
264 | /* reset clock control mode */ |
265 | u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2); | |
266 | adc_ctrl2 &= ~AD1836_ADC_SERFMT_MASK; | |
7eaae41e | 267 | |
f0fba2ad | 268 | return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2); |
7eaae41e BS |
269 | } |
270 | ||
f0fba2ad | 271 | static struct snd_soc_codec_driver soc_codec_dev_ad1836 = { |
7eaae41e BS |
272 | .probe = ad1836_probe, |
273 | .remove = ad1836_remove, | |
84549d23 BS |
274 | .suspend = ad1836_soc_suspend, |
275 | .resume = ad1836_soc_resume, | |
f0fba2ad LG |
276 | .reg_cache_size = AD1836_NUM_REGS, |
277 | .reg_word_size = sizeof(u16), | |
278 | }; | |
279 | ||
280 | static int __devinit ad1836_spi_probe(struct spi_device *spi) | |
281 | { | |
282 | struct ad1836_priv *ad1836; | |
283 | int ret; | |
284 | ||
285 | ad1836 = kzalloc(sizeof(struct ad1836_priv), GFP_KERNEL); | |
286 | if (ad1836 == NULL) | |
287 | return -ENOMEM; | |
288 | ||
289 | spi_set_drvdata(spi, ad1836); | |
290 | ad1836->control_data = spi; | |
291 | ad1836->control_type = SND_SOC_SPI; | |
292 | ||
293 | ret = snd_soc_register_codec(&spi->dev, | |
294 | &soc_codec_dev_ad1836, &ad1836_dai, 1); | |
295 | if (ret < 0) | |
296 | kfree(ad1836); | |
297 | return ret; | |
298 | } | |
299 | ||
300 | static int __devexit ad1836_spi_remove(struct spi_device *spi) | |
301 | { | |
302 | snd_soc_unregister_codec(&spi->dev); | |
303 | kfree(spi_get_drvdata(spi)); | |
304 | return 0; | |
305 | } | |
306 | ||
307 | static struct spi_driver ad1836_spi_driver = { | |
308 | .driver = { | |
309 | .name = "ad1836-codec", | |
310 | .owner = THIS_MODULE, | |
311 | }, | |
312 | .probe = ad1836_spi_probe, | |
313 | .remove = __devexit_p(ad1836_spi_remove), | |
7eaae41e | 314 | }; |
7eaae41e BS |
315 | |
316 | static int __init ad1836_init(void) | |
317 | { | |
318 | int ret; | |
319 | ||
320 | ret = spi_register_driver(&ad1836_spi_driver); | |
321 | if (ret != 0) { | |
322 | printk(KERN_ERR "Failed to register ad1836 SPI driver: %d\n", | |
323 | ret); | |
324 | } | |
325 | ||
326 | return ret; | |
327 | } | |
328 | module_init(ad1836_init); | |
329 | ||
330 | static void __exit ad1836_exit(void) | |
331 | { | |
332 | spi_unregister_driver(&ad1836_spi_driver); | |
333 | } | |
334 | module_exit(ad1836_exit); | |
335 | ||
336 | MODULE_DESCRIPTION("ASoC ad1836 driver"); | |
337 | MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); | |
338 | MODULE_LICENSE("GPL"); |