Commit | Line | Data |
---|---|---|
1274738d BS |
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/module.h> | |
1274738d BS |
31 | #include <linux/kernel.h> |
32 | #include <linux/device.h> | |
33 | #include <sound/core.h> | |
34 | #include <sound/pcm.h> | |
35 | #include <sound/pcm_params.h> | |
36 | #include <sound/initval.h> | |
37 | #include <sound/soc.h> | |
38 | #include <sound/tlv.h> | |
39 | #include <sound/soc-dapm.h> | |
40 | #include <linux/spi/spi.h> | |
41 | #include "ad1938.h" | |
42 | ||
43 | /* codec private data */ | |
44 | struct ad1938_priv { | |
bca14657 | 45 | struct snd_soc_codec codec; |
1274738d | 46 | u8 reg_cache[AD1938_NUM_REGS]; |
1274738d BS |
47 | }; |
48 | ||
994dc424 BS |
49 | /* ad1938 register cache & default register settings */ |
50 | static const u8 ad1938_reg[AD1938_NUM_REGS] = { | |
51 | 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, | |
52 | }; | |
53 | ||
1274738d BS |
54 | static struct snd_soc_codec *ad1938_codec; |
55 | struct snd_soc_codec_device soc_codec_dev_ad1938; | |
56 | static int ad1938_register(struct ad1938_priv *ad1938); | |
57 | static void ad1938_unregister(struct ad1938_priv *ad1938); | |
58 | ||
59 | /* | |
60 | * AD1938 volume/mute/de-emphasis etc. controls | |
61 | */ | |
62 | static const char *ad1938_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"}; | |
63 | ||
64 | static const struct soc_enum ad1938_deemp_enum = | |
65 | SOC_ENUM_SINGLE(AD1938_DAC_CTRL2, 1, 4, ad1938_deemp); | |
66 | ||
67 | static const struct snd_kcontrol_new ad1938_snd_controls[] = { | |
68 | /* DAC volume control */ | |
69 | SOC_DOUBLE_R("DAC1 Volume", AD1938_DAC_L1_VOL, | |
70 | AD1938_DAC_R1_VOL, 0, 0xFF, 1), | |
71 | SOC_DOUBLE_R("DAC2 Volume", AD1938_DAC_L2_VOL, | |
72 | AD1938_DAC_R2_VOL, 0, 0xFF, 1), | |
73 | SOC_DOUBLE_R("DAC3 Volume", AD1938_DAC_L3_VOL, | |
74 | AD1938_DAC_R3_VOL, 0, 0xFF, 1), | |
75 | SOC_DOUBLE_R("DAC4 Volume", AD1938_DAC_L4_VOL, | |
76 | AD1938_DAC_R4_VOL, 0, 0xFF, 1), | |
77 | ||
78 | /* ADC switch control */ | |
3a39f832 BS |
79 | SOC_DOUBLE("ADC1 Switch", AD1938_ADC_CTRL0, AD1938_ADCL1_MUTE, |
80 | AD1938_ADCR1_MUTE, 1, 1), | |
81 | SOC_DOUBLE("ADC2 Switch", AD1938_ADC_CTRL0, AD1938_ADCL2_MUTE, | |
82 | AD1938_ADCR2_MUTE, 1, 1), | |
1274738d BS |
83 | |
84 | /* DAC switch control */ | |
3a39f832 BS |
85 | SOC_DOUBLE("DAC1 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL1_MUTE, |
86 | AD1938_DACR1_MUTE, 1, 1), | |
87 | SOC_DOUBLE("DAC2 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL2_MUTE, | |
88 | AD1938_DACR2_MUTE, 1, 1), | |
89 | SOC_DOUBLE("DAC3 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL3_MUTE, | |
90 | AD1938_DACR3_MUTE, 1, 1), | |
91 | SOC_DOUBLE("DAC4 Switch", AD1938_DAC_CHNL_MUTE, AD1938_DACL4_MUTE, | |
92 | AD1938_DACR4_MUTE, 1, 1), | |
1274738d BS |
93 | |
94 | /* ADC high-pass filter */ | |
95 | SOC_SINGLE("ADC High Pass Filter Switch", AD1938_ADC_CTRL0, | |
96 | AD1938_ADC_HIGHPASS_FILTER, 1, 0), | |
97 | ||
98 | /* DAC de-emphasis */ | |
99 | SOC_ENUM("Playback Deemphasis", ad1938_deemp_enum), | |
100 | }; | |
101 | ||
102 | static const struct snd_soc_dapm_widget ad1938_dapm_widgets[] = { | |
103 | SND_SOC_DAPM_DAC("DAC", "Playback", AD1938_DAC_CTRL0, 0, 1), | |
104 | SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), | |
5b617355 | 105 | SND_SOC_DAPM_SUPPLY("PLL_PWR", AD1938_PLL_CLK_CTRL0, 0, 1, NULL, 0), |
1274738d | 106 | SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1938_ADC_CTRL0, 0, 1, NULL, 0), |
c4ff357a BS |
107 | SND_SOC_DAPM_OUTPUT("DAC1OUT"), |
108 | SND_SOC_DAPM_OUTPUT("DAC2OUT"), | |
109 | SND_SOC_DAPM_OUTPUT("DAC3OUT"), | |
110 | SND_SOC_DAPM_OUTPUT("DAC4OUT"), | |
111 | SND_SOC_DAPM_INPUT("ADC1IN"), | |
112 | SND_SOC_DAPM_INPUT("ADC2IN"), | |
1274738d BS |
113 | }; |
114 | ||
115 | static const struct snd_soc_dapm_route audio_paths[] = { | |
5b617355 BS |
116 | { "DAC", NULL, "PLL_PWR" }, |
117 | { "ADC", NULL, "PLL_PWR" }, | |
1274738d BS |
118 | { "DAC", NULL, "ADC_PWR" }, |
119 | { "ADC", NULL, "ADC_PWR" }, | |
c4ff357a BS |
120 | { "DAC1OUT", "DAC1 Switch", "DAC" }, |
121 | { "DAC2OUT", "DAC2 Switch", "DAC" }, | |
122 | { "DAC3OUT", "DAC3 Switch", "DAC" }, | |
123 | { "DAC4OUT", "DAC4 Switch", "DAC" }, | |
124 | { "ADC", "ADC1 Switch", "ADC1IN" }, | |
125 | { "ADC", "ADC2 Switch", "ADC2IN" }, | |
1274738d BS |
126 | }; |
127 | ||
128 | /* | |
129 | * DAI ops entries | |
130 | */ | |
131 | ||
132 | static int ad1938_mute(struct snd_soc_dai *dai, int mute) | |
133 | { | |
134 | struct snd_soc_codec *codec = dai->codec; | |
135 | int reg; | |
136 | ||
994dc424 | 137 | reg = snd_soc_read(codec, AD1938_DAC_CTRL2); |
3a39f832 BS |
138 | reg = (mute > 0) ? reg | AD1938_DAC_MASTER_MUTE : reg & |
139 | (~AD1938_DAC_MASTER_MUTE); | |
994dc424 | 140 | snd_soc_write(codec, AD1938_DAC_CTRL2, reg); |
1274738d BS |
141 | |
142 | return 0; | |
143 | } | |
144 | ||
d2a38214 | 145 | static int ad1938_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, |
08ba864e | 146 | unsigned int rx_mask, int slots, int width) |
1274738d BS |
147 | { |
148 | struct snd_soc_codec *codec = dai->codec; | |
994dc424 BS |
149 | int dac_reg = snd_soc_read(codec, AD1938_DAC_CTRL1); |
150 | int adc_reg = snd_soc_read(codec, AD1938_ADC_CTRL2); | |
1274738d BS |
151 | |
152 | dac_reg &= ~AD1938_DAC_CHAN_MASK; | |
153 | adc_reg &= ~AD1938_ADC_CHAN_MASK; | |
154 | ||
bca14657 | 155 | switch (slots) { |
1274738d BS |
156 | case 2: |
157 | dac_reg |= AD1938_DAC_2_CHANNELS << AD1938_DAC_CHAN_SHFT; | |
158 | adc_reg |= AD1938_ADC_2_CHANNELS << AD1938_ADC_CHAN_SHFT; | |
159 | break; | |
160 | case 4: | |
161 | dac_reg |= AD1938_DAC_4_CHANNELS << AD1938_DAC_CHAN_SHFT; | |
162 | adc_reg |= AD1938_ADC_4_CHANNELS << AD1938_ADC_CHAN_SHFT; | |
163 | break; | |
164 | case 8: | |
165 | dac_reg |= AD1938_DAC_8_CHANNELS << AD1938_DAC_CHAN_SHFT; | |
166 | adc_reg |= AD1938_ADC_8_CHANNELS << AD1938_ADC_CHAN_SHFT; | |
167 | break; | |
168 | case 16: | |
169 | dac_reg |= AD1938_DAC_16_CHANNELS << AD1938_DAC_CHAN_SHFT; | |
170 | adc_reg |= AD1938_ADC_16_CHANNELS << AD1938_ADC_CHAN_SHFT; | |
171 | break; | |
172 | default: | |
173 | return -EINVAL; | |
174 | } | |
175 | ||
994dc424 BS |
176 | snd_soc_write(codec, AD1938_DAC_CTRL1, dac_reg); |
177 | snd_soc_write(codec, AD1938_ADC_CTRL2, adc_reg); | |
1274738d BS |
178 | |
179 | return 0; | |
180 | } | |
181 | ||
182 | static int ad1938_set_dai_fmt(struct snd_soc_dai *codec_dai, | |
183 | unsigned int fmt) | |
184 | { | |
185 | struct snd_soc_codec *codec = codec_dai->codec; | |
186 | int adc_reg, dac_reg; | |
187 | ||
994dc424 BS |
188 | adc_reg = snd_soc_read(codec, AD1938_ADC_CTRL2); |
189 | dac_reg = snd_soc_read(codec, AD1938_DAC_CTRL1); | |
1274738d | 190 | |
3a39f832 BS |
191 | /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S |
192 | * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) | |
1274738d BS |
193 | */ |
194 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
195 | case SND_SOC_DAIFMT_I2S: | |
196 | adc_reg &= ~AD1938_ADC_SERFMT_MASK; | |
197 | adc_reg |= AD1938_ADC_SERFMT_TDM; | |
198 | break; | |
199 | case SND_SOC_DAIFMT_DSP_A: | |
200 | adc_reg &= ~AD1938_ADC_SERFMT_MASK; | |
201 | adc_reg |= AD1938_ADC_SERFMT_AUX; | |
202 | break; | |
203 | default: | |
204 | return -EINVAL; | |
205 | } | |
206 | ||
207 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
208 | case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */ | |
209 | adc_reg &= ~AD1938_ADC_LEFT_HIGH; | |
210 | adc_reg &= ~AD1938_ADC_BCLK_INV; | |
211 | dac_reg &= ~AD1938_DAC_LEFT_HIGH; | |
212 | dac_reg &= ~AD1938_DAC_BCLK_INV; | |
213 | break; | |
214 | case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */ | |
215 | adc_reg |= AD1938_ADC_LEFT_HIGH; | |
216 | adc_reg &= ~AD1938_ADC_BCLK_INV; | |
217 | dac_reg |= AD1938_DAC_LEFT_HIGH; | |
218 | dac_reg &= ~AD1938_DAC_BCLK_INV; | |
219 | break; | |
220 | case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */ | |
221 | adc_reg &= ~AD1938_ADC_LEFT_HIGH; | |
222 | adc_reg |= AD1938_ADC_BCLK_INV; | |
223 | dac_reg &= ~AD1938_DAC_LEFT_HIGH; | |
224 | dac_reg |= AD1938_DAC_BCLK_INV; | |
225 | break; | |
226 | ||
227 | case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */ | |
228 | adc_reg |= AD1938_ADC_LEFT_HIGH; | |
229 | adc_reg |= AD1938_ADC_BCLK_INV; | |
230 | dac_reg |= AD1938_DAC_LEFT_HIGH; | |
231 | dac_reg |= AD1938_DAC_BCLK_INV; | |
232 | break; | |
233 | default: | |
234 | return -EINVAL; | |
235 | } | |
236 | ||
237 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
238 | case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */ | |
239 | adc_reg |= AD1938_ADC_LCR_MASTER; | |
240 | adc_reg |= AD1938_ADC_BCLK_MASTER; | |
241 | dac_reg |= AD1938_DAC_LCR_MASTER; | |
242 | dac_reg |= AD1938_DAC_BCLK_MASTER; | |
243 | break; | |
244 | case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */ | |
245 | adc_reg |= AD1938_ADC_LCR_MASTER; | |
246 | adc_reg &= ~AD1938_ADC_BCLK_MASTER; | |
247 | dac_reg |= AD1938_DAC_LCR_MASTER; | |
248 | dac_reg &= ~AD1938_DAC_BCLK_MASTER; | |
249 | break; | |
250 | case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */ | |
251 | adc_reg &= ~AD1938_ADC_LCR_MASTER; | |
252 | adc_reg |= AD1938_ADC_BCLK_MASTER; | |
253 | dac_reg &= ~AD1938_DAC_LCR_MASTER; | |
254 | dac_reg |= AD1938_DAC_BCLK_MASTER; | |
255 | break; | |
256 | case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */ | |
257 | adc_reg &= ~AD1938_ADC_LCR_MASTER; | |
258 | adc_reg &= ~AD1938_ADC_BCLK_MASTER; | |
259 | dac_reg &= ~AD1938_DAC_LCR_MASTER; | |
260 | dac_reg &= ~AD1938_DAC_BCLK_MASTER; | |
261 | break; | |
262 | default: | |
263 | return -EINVAL; | |
264 | } | |
265 | ||
994dc424 BS |
266 | snd_soc_write(codec, AD1938_ADC_CTRL2, adc_reg); |
267 | snd_soc_write(codec, AD1938_DAC_CTRL1, dac_reg); | |
1274738d BS |
268 | |
269 | return 0; | |
270 | } | |
271 | ||
272 | static int ad1938_hw_params(struct snd_pcm_substream *substream, | |
273 | struct snd_pcm_hw_params *params, | |
274 | struct snd_soc_dai *dai) | |
275 | { | |
276 | int word_len = 0, reg = 0; | |
277 | ||
278 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
279 | struct snd_soc_device *socdev = rtd->socdev; | |
280 | struct snd_soc_codec *codec = socdev->card->codec; | |
281 | ||
282 | /* bit size */ | |
283 | switch (params_format(params)) { | |
284 | case SNDRV_PCM_FORMAT_S16_LE: | |
285 | word_len = 3; | |
286 | break; | |
287 | case SNDRV_PCM_FORMAT_S20_3LE: | |
288 | word_len = 1; | |
289 | break; | |
290 | case SNDRV_PCM_FORMAT_S24_LE: | |
291 | case SNDRV_PCM_FORMAT_S32_LE: | |
292 | word_len = 0; | |
293 | break; | |
294 | } | |
295 | ||
994dc424 | 296 | reg = snd_soc_read(codec, AD1938_DAC_CTRL2); |
1274738d | 297 | reg = (reg & (~AD1938_DAC_WORD_LEN_MASK)) | word_len; |
994dc424 | 298 | snd_soc_write(codec, AD1938_DAC_CTRL2, reg); |
1274738d | 299 | |
994dc424 | 300 | reg = snd_soc_read(codec, AD1938_ADC_CTRL1); |
1274738d | 301 | reg = (reg & (~AD1938_ADC_WORD_LEN_MASK)) | word_len; |
994dc424 | 302 | snd_soc_write(codec, AD1938_ADC_CTRL1, reg); |
bca14657 MB |
303 | |
304 | return 0; | |
1274738d BS |
305 | } |
306 | ||
307 | static int __devinit ad1938_spi_probe(struct spi_device *spi) | |
308 | { | |
309 | struct snd_soc_codec *codec; | |
310 | struct ad1938_priv *ad1938; | |
311 | ||
312 | ad1938 = kzalloc(sizeof(struct ad1938_priv), GFP_KERNEL); | |
313 | if (ad1938 == NULL) | |
314 | return -ENOMEM; | |
315 | ||
316 | codec = &ad1938->codec; | |
317 | codec->control_data = spi; | |
318 | codec->dev = &spi->dev; | |
319 | ||
416c8fe3 | 320 | dev_set_drvdata(&spi->dev, ad1938); |
1274738d BS |
321 | |
322 | return ad1938_register(ad1938); | |
323 | } | |
324 | ||
325 | static int __devexit ad1938_spi_remove(struct spi_device *spi) | |
326 | { | |
416c8fe3 | 327 | struct ad1938_priv *ad1938 = dev_get_drvdata(&spi->dev); |
1274738d BS |
328 | |
329 | ad1938_unregister(ad1938); | |
330 | return 0; | |
331 | } | |
332 | ||
333 | static struct spi_driver ad1938_spi_driver = { | |
334 | .driver = { | |
2a708137 | 335 | .name = "ad1938", |
1274738d BS |
336 | .owner = THIS_MODULE, |
337 | }, | |
338 | .probe = ad1938_spi_probe, | |
339 | .remove = __devexit_p(ad1938_spi_remove), | |
340 | }; | |
341 | ||
342 | static struct snd_soc_dai_ops ad1938_dai_ops = { | |
343 | .hw_params = ad1938_hw_params, | |
344 | .digital_mute = ad1938_mute, | |
345 | .set_tdm_slot = ad1938_set_tdm_slot, | |
346 | .set_fmt = ad1938_set_dai_fmt, | |
347 | }; | |
348 | ||
349 | /* codec DAI instance */ | |
350 | struct snd_soc_dai ad1938_dai = { | |
351 | .name = "AD1938", | |
352 | .playback = { | |
353 | .stream_name = "Playback", | |
354 | .channels_min = 2, | |
355 | .channels_max = 8, | |
356 | .rates = SNDRV_PCM_RATE_48000, | |
357 | .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | | |
358 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, | |
359 | }, | |
360 | .capture = { | |
361 | .stream_name = "Capture", | |
362 | .channels_min = 2, | |
363 | .channels_max = 4, | |
364 | .rates = SNDRV_PCM_RATE_48000, | |
365 | .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | | |
366 | SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, | |
367 | }, | |
368 | .ops = &ad1938_dai_ops, | |
369 | }; | |
370 | EXPORT_SYMBOL_GPL(ad1938_dai); | |
371 | ||
372 | static int ad1938_register(struct ad1938_priv *ad1938) | |
373 | { | |
374 | int ret; | |
375 | struct snd_soc_codec *codec = &ad1938->codec; | |
376 | ||
377 | if (ad1938_codec) { | |
378 | dev_err(codec->dev, "Another ad1938 is registered\n"); | |
379 | return -EINVAL; | |
380 | } | |
381 | ||
382 | mutex_init(&codec->mutex); | |
383 | INIT_LIST_HEAD(&codec->dapm_widgets); | |
384 | INIT_LIST_HEAD(&codec->dapm_paths); | |
385 | codec->private_data = ad1938; | |
386 | codec->reg_cache = ad1938->reg_cache; | |
387 | codec->reg_cache_size = AD1938_NUM_REGS; | |
388 | codec->name = "AD1938"; | |
389 | codec->owner = THIS_MODULE; | |
390 | codec->dai = &ad1938_dai; | |
391 | codec->num_dai = 1; | |
1274738d BS |
392 | INIT_LIST_HEAD(&codec->dapm_widgets); |
393 | INIT_LIST_HEAD(&codec->dapm_paths); | |
394 | ||
bca14657 MB |
395 | ad1938_dai.dev = codec->dev; |
396 | ad1938_codec = codec; | |
1274738d | 397 | |
994dc424 BS |
398 | memcpy(codec->reg_cache, ad1938_reg, AD1938_NUM_REGS); |
399 | ||
400 | ret = snd_soc_codec_set_cache_io(codec, 16, 8, SND_SOC_SPI); | |
401 | if (ret < 0) { | |
402 | dev_err(codec->dev, "failed to set cache I/O: %d\n", | |
403 | ret); | |
404 | kfree(ad1938); | |
405 | return ret; | |
406 | } | |
407 | ||
1274738d | 408 | /* default setting for ad1938 */ |
3a39f832 BS |
409 | |
410 | /* unmute dac channels */ | |
994dc424 | 411 | snd_soc_write(codec, AD1938_DAC_CHNL_MUTE, 0x0); |
3a39f832 | 412 | /* de-emphasis: 48kHz, powedown dac */ |
994dc424 | 413 | snd_soc_write(codec, AD1938_DAC_CTRL2, 0x1A); |
3a39f832 | 414 | /* powerdown dac, dac in tdm mode */ |
994dc424 | 415 | snd_soc_write(codec, AD1938_DAC_CTRL0, 0x41); |
3a39f832 | 416 | /* high-pass filter enable */ |
994dc424 | 417 | snd_soc_write(codec, AD1938_ADC_CTRL0, 0x3); |
3a39f832 | 418 | /* sata delay=1, adc aux mode */ |
994dc424 | 419 | snd_soc_write(codec, AD1938_ADC_CTRL1, 0x43); |
3a39f832 | 420 | /* pll input: mclki/xi */ |
994dc424 BS |
421 | snd_soc_write(codec, AD1938_PLL_CLK_CTRL0, 0x9D); |
422 | snd_soc_write(codec, AD1938_PLL_CLK_CTRL1, 0x04); | |
1274738d | 423 | |
bca14657 MB |
424 | ret = snd_soc_register_codec(codec); |
425 | if (ret != 0) { | |
426 | dev_err(codec->dev, "Failed to register codec: %d\n", ret); | |
2a708137 | 427 | kfree(ad1938); |
bca14657 MB |
428 | return ret; |
429 | } | |
1274738d | 430 | |
bca14657 MB |
431 | ret = snd_soc_register_dai(&ad1938_dai); |
432 | if (ret != 0) { | |
433 | dev_err(codec->dev, "Failed to register DAI: %d\n", ret); | |
434 | snd_soc_unregister_codec(codec); | |
2a708137 | 435 | kfree(ad1938); |
bca14657 MB |
436 | return ret; |
437 | } | |
1274738d | 438 | |
bca14657 | 439 | return 0; |
1274738d BS |
440 | } |
441 | ||
442 | static void ad1938_unregister(struct ad1938_priv *ad1938) | |
443 | { | |
bca14657 MB |
444 | snd_soc_unregister_dai(&ad1938_dai); |
445 | snd_soc_unregister_codec(&ad1938->codec); | |
446 | kfree(ad1938); | |
447 | ad1938_codec = NULL; | |
1274738d BS |
448 | } |
449 | ||
450 | static int ad1938_probe(struct platform_device *pdev) | |
451 | { | |
bca14657 MB |
452 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
453 | struct snd_soc_codec *codec; | |
454 | int ret = 0; | |
455 | ||
456 | if (ad1938_codec == NULL) { | |
457 | dev_err(&pdev->dev, "Codec device not registered\n"); | |
458 | return -ENODEV; | |
459 | } | |
460 | ||
461 | socdev->card->codec = ad1938_codec; | |
462 | codec = ad1938_codec; | |
463 | ||
464 | /* register pcms */ | |
465 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); | |
466 | if (ret < 0) { | |
467 | dev_err(codec->dev, "failed to create pcms: %d\n", ret); | |
468 | goto pcm_err; | |
469 | } | |
470 | ||
471 | snd_soc_add_controls(codec, ad1938_snd_controls, | |
472 | ARRAY_SIZE(ad1938_snd_controls)); | |
473 | snd_soc_dapm_new_controls(codec, ad1938_dapm_widgets, | |
474 | ARRAY_SIZE(ad1938_dapm_widgets)); | |
1274738d | 475 | snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); |
1274738d | 476 | |
1274738d | 477 | |
1274738d | 478 | pcm_err: |
bca14657 | 479 | return ret; |
1274738d BS |
480 | } |
481 | ||
482 | /* power down chip */ | |
483 | static int ad1938_remove(struct platform_device *pdev) | |
484 | { | |
bca14657 | 485 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
1274738d | 486 | |
bca14657 MB |
487 | snd_soc_free_pcms(socdev); |
488 | snd_soc_dapm_free(socdev); | |
1274738d | 489 | |
bca14657 | 490 | return 0; |
1274738d BS |
491 | } |
492 | ||
1274738d BS |
493 | struct snd_soc_codec_device soc_codec_dev_ad1938 = { |
494 | .probe = ad1938_probe, | |
495 | .remove = ad1938_remove, | |
1274738d BS |
496 | }; |
497 | EXPORT_SYMBOL_GPL(soc_codec_dev_ad1938); | |
498 | ||
499 | static int __init ad1938_init(void) | |
500 | { | |
501 | int ret; | |
502 | ||
503 | ret = spi_register_driver(&ad1938_spi_driver); | |
504 | if (ret != 0) { | |
505 | printk(KERN_ERR "Failed to register ad1938 SPI driver: %d\n", | |
506 | ret); | |
507 | } | |
508 | ||
509 | return ret; | |
510 | } | |
511 | module_init(ad1938_init); | |
512 | ||
513 | static void __exit ad1938_exit(void) | |
514 | { | |
515 | spi_unregister_driver(&ad1938_spi_driver); | |
516 | } | |
517 | module_exit(ad1938_exit); | |
518 | ||
519 | MODULE_DESCRIPTION("ASoC ad1938 driver"); | |
520 | MODULE_AUTHOR("Barry Song "); | |
521 | MODULE_LICENSE("GPL"); |