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Commit | Line | Data |
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d8e3bb73 GL |
1 | /* |
2 | * Texas Instruments TLV320AIC26 low power audio CODEC | |
3 | * ALSA SoC CODEC driver | |
4 | * | |
5 | * Copyright (C) 2008 Secret Lab Technologies Ltd. | |
6 | */ | |
7 | ||
8 | #include <linux/module.h> | |
9 | #include <linux/moduleparam.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/delay.h> | |
12 | #include <linux/pm.h> | |
13 | #include <linux/device.h> | |
14 | #include <linux/sysfs.h> | |
15 | #include <linux/spi/spi.h> | |
5a0e3ad6 | 16 | #include <linux/slab.h> |
d8e3bb73 GL |
17 | #include <sound/core.h> |
18 | #include <sound/pcm.h> | |
19 | #include <sound/pcm_params.h> | |
20 | #include <sound/soc.h> | |
d8e3bb73 GL |
21 | #include <sound/initval.h> |
22 | ||
23 | #include "tlv320aic26.h" | |
24 | ||
25 | MODULE_DESCRIPTION("ASoC TLV320AIC26 codec driver"); | |
26 | MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); | |
27 | MODULE_LICENSE("GPL"); | |
28 | ||
29 | /* AIC26 driver private data */ | |
30 | struct aic26 { | |
31 | struct spi_device *spi; | |
7fbdeb80 | 32 | struct regmap *regmap; |
f8f11795 | 33 | struct snd_soc_codec *codec; |
d8e3bb73 GL |
34 | int master; |
35 | int datfm; | |
36 | int mclk; | |
37 | ||
38 | /* Keyclick parameters */ | |
39 | int keyclick_amplitude; | |
40 | int keyclick_freq; | |
41 | int keyclick_len; | |
42 | }; | |
43 | ||
4a11bc2f MB |
44 | static const struct snd_soc_dapm_widget tlv320aic26_dapm_widgets[] = { |
45 | SND_SOC_DAPM_INPUT("MICIN"), | |
46 | SND_SOC_DAPM_INPUT("AUX"), | |
47 | ||
48 | SND_SOC_DAPM_OUTPUT("HPL"), | |
49 | SND_SOC_DAPM_OUTPUT("HPR"), | |
50 | }; | |
51 | ||
52 | static const struct snd_soc_dapm_route tlv320aic26_dapm_routes[] = { | |
53 | { "Capture", NULL, "MICIN" }, | |
54 | { "Capture", NULL, "AUX" }, | |
55 | ||
56 | { "HPL", NULL, "Playback" }, | |
57 | { "HPR", NULL, "Playback" }, | |
58 | }; | |
59 | ||
d8e3bb73 GL |
60 | /* --------------------------------------------------------------------- |
61 | * Digital Audio Interface Operations | |
62 | */ | |
63 | static int aic26_hw_params(struct snd_pcm_substream *substream, | |
dee89c4d MB |
64 | struct snd_pcm_hw_params *params, |
65 | struct snd_soc_dai *dai) | |
d8e3bb73 | 66 | { |
e6968a17 | 67 | struct snd_soc_codec *codec = dai->codec; |
d4a8ca24 | 68 | struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec); |
d8e3bb73 GL |
69 | int fsref, divisor, wlen, pval, jval, dval, qval; |
70 | u16 reg; | |
71 | ||
72 | dev_dbg(&aic26->spi->dev, "aic26_hw_params(substream=%p, params=%p)\n", | |
73 | substream, params); | |
93d0ad8f MB |
74 | dev_dbg(&aic26->spi->dev, "rate=%i width=%d\n", params_rate(params), |
75 | params_width(params)); | |
d8e3bb73 GL |
76 | |
77 | switch (params_rate(params)) { | |
78 | case 8000: fsref = 48000; divisor = AIC26_DIV_6; break; | |
79 | case 11025: fsref = 44100; divisor = AIC26_DIV_4; break; | |
80 | case 12000: fsref = 48000; divisor = AIC26_DIV_4; break; | |
81 | case 16000: fsref = 48000; divisor = AIC26_DIV_3; break; | |
82 | case 22050: fsref = 44100; divisor = AIC26_DIV_2; break; | |
83 | case 24000: fsref = 48000; divisor = AIC26_DIV_2; break; | |
84 | case 32000: fsref = 48000; divisor = AIC26_DIV_1_5; break; | |
85 | case 44100: fsref = 44100; divisor = AIC26_DIV_1; break; | |
86 | case 48000: fsref = 48000; divisor = AIC26_DIV_1; break; | |
87 | default: | |
88 | dev_dbg(&aic26->spi->dev, "bad rate\n"); return -EINVAL; | |
89 | } | |
90 | ||
91 | /* select data word length */ | |
93d0ad8f MB |
92 | switch (params_width(params)) { |
93 | case 8: wlen = AIC26_WLEN_16; break; | |
94 | case 16: wlen = AIC26_WLEN_16; break; | |
95 | case 24: wlen = AIC26_WLEN_24; break; | |
96 | case 32: wlen = AIC26_WLEN_32; break; | |
d8e3bb73 GL |
97 | default: |
98 | dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL; | |
99 | } | |
100 | ||
2aba76f0 MW |
101 | /** |
102 | * Configure PLL | |
103 | * fsref = (mclk * PLLM) / 2048 | |
104 | * where PLLM = J.DDDD (DDDD register ranges from 0 to 9999, decimal) | |
105 | */ | |
d8e3bb73 | 106 | pval = 1; |
2aba76f0 MW |
107 | /* compute J portion of multiplier */ |
108 | jval = fsref / (aic26->mclk / 2048); | |
109 | /* compute fractional DDDD component of multiplier */ | |
110 | dval = fsref - (jval * (aic26->mclk / 2048)); | |
111 | dval = (10000 * dval) / (aic26->mclk / 2048); | |
112 | dev_dbg(&aic26->spi->dev, "Setting PLLM to %d.%04d\n", jval, dval); | |
d8e3bb73 GL |
113 | qval = 0; |
114 | reg = 0x8000 | qval << 11 | pval << 8 | jval << 2; | |
12201398 | 115 | snd_soc_write(codec, AIC26_REG_PLL_PROG1, reg); |
d8e3bb73 | 116 | reg = dval << 2; |
12201398 | 117 | snd_soc_write(codec, AIC26_REG_PLL_PROG2, reg); |
d8e3bb73 GL |
118 | |
119 | /* Audio Control 3 (master mode, fsref rate) */ | |
d8e3bb73 | 120 | if (aic26->master) |
5b0959d4 | 121 | reg = 0x0800; |
d8e3bb73 | 122 | if (fsref == 48000) |
5b0959d4 MB |
123 | reg = 0x2000; |
124 | snd_soc_update_bits(codec, AIC26_REG_AUDIO_CTRL3, 0xf800, reg); | |
d8e3bb73 GL |
125 | |
126 | /* Audio Control 1 (FSref divisor) */ | |
5b0959d4 MB |
127 | reg = wlen | aic26->datfm | (divisor << 3) | divisor; |
128 | snd_soc_update_bits(codec, AIC26_REG_AUDIO_CTRL1, 0xfff, reg); | |
d8e3bb73 GL |
129 | |
130 | return 0; | |
131 | } | |
132 | ||
133 | /** | |
134 | * aic26_mute - Mute control to reduce noise when changing audio format | |
135 | */ | |
136 | static int aic26_mute(struct snd_soc_dai *dai, int mute) | |
137 | { | |
138 | struct snd_soc_codec *codec = dai->codec; | |
d4a8ca24 | 139 | struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec); |
5b0959d4 | 140 | u16 reg; |
d8e3bb73 GL |
141 | |
142 | dev_dbg(&aic26->spi->dev, "aic26_mute(dai=%p, mute=%i)\n", | |
143 | dai, mute); | |
144 | ||
145 | if (mute) | |
5b0959d4 | 146 | reg = 0x8080; |
d8e3bb73 | 147 | else |
5b0959d4 MB |
148 | reg = 0; |
149 | snd_soc_update_bits(codec, AIC26_REG_DAC_GAIN, 0x8000, reg); | |
d8e3bb73 GL |
150 | |
151 | return 0; | |
152 | } | |
153 | ||
154 | static int aic26_set_sysclk(struct snd_soc_dai *codec_dai, | |
155 | int clk_id, unsigned int freq, int dir) | |
156 | { | |
157 | struct snd_soc_codec *codec = codec_dai->codec; | |
d4a8ca24 | 158 | struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec); |
d8e3bb73 GL |
159 | |
160 | dev_dbg(&aic26->spi->dev, "aic26_set_sysclk(dai=%p, clk_id==%i," | |
161 | " freq=%i, dir=%i)\n", | |
162 | codec_dai, clk_id, freq, dir); | |
163 | ||
164 | /* MCLK needs to fall between 2MHz and 50 MHz */ | |
165 | if ((freq < 2000000) || (freq > 50000000)) | |
166 | return -EINVAL; | |
167 | ||
168 | aic26->mclk = freq; | |
169 | return 0; | |
170 | } | |
171 | ||
172 | static int aic26_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) | |
173 | { | |
174 | struct snd_soc_codec *codec = codec_dai->codec; | |
d4a8ca24 | 175 | struct aic26 *aic26 = snd_soc_codec_get_drvdata(codec); |
d8e3bb73 GL |
176 | |
177 | dev_dbg(&aic26->spi->dev, "aic26_set_fmt(dai=%p, fmt==%i)\n", | |
178 | codec_dai, fmt); | |
179 | ||
180 | /* set master/slave audio interface */ | |
181 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
182 | case SND_SOC_DAIFMT_CBM_CFM: aic26->master = 1; break; | |
183 | case SND_SOC_DAIFMT_CBS_CFS: aic26->master = 0; break; | |
184 | default: | |
185 | dev_dbg(&aic26->spi->dev, "bad master\n"); return -EINVAL; | |
186 | } | |
187 | ||
188 | /* interface format */ | |
189 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
190 | case SND_SOC_DAIFMT_I2S: aic26->datfm = AIC26_DATFM_I2S; break; | |
191 | case SND_SOC_DAIFMT_DSP_A: aic26->datfm = AIC26_DATFM_DSP; break; | |
192 | case SND_SOC_DAIFMT_RIGHT_J: aic26->datfm = AIC26_DATFM_RIGHTJ; break; | |
193 | case SND_SOC_DAIFMT_LEFT_J: aic26->datfm = AIC26_DATFM_LEFTJ; break; | |
194 | default: | |
195 | dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL; | |
196 | } | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | /* --------------------------------------------------------------------- | |
202 | * Digital Audio Interface Definition | |
203 | */ | |
204 | #define AIC26_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ | |
205 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ | |
206 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ | |
207 | SNDRV_PCM_RATE_48000) | |
208 | #define AIC26_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |\ | |
209 | SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE) | |
210 | ||
85e7652d | 211 | static const struct snd_soc_dai_ops aic26_dai_ops = { |
6335d055 EM |
212 | .hw_params = aic26_hw_params, |
213 | .digital_mute = aic26_mute, | |
214 | .set_sysclk = aic26_set_sysclk, | |
215 | .set_fmt = aic26_set_fmt, | |
216 | }; | |
217 | ||
f0fba2ad LG |
218 | static struct snd_soc_dai_driver aic26_dai = { |
219 | .name = "tlv320aic26-hifi", | |
d8e3bb73 GL |
220 | .playback = { |
221 | .stream_name = "Playback", | |
222 | .channels_min = 2, | |
223 | .channels_max = 2, | |
224 | .rates = AIC26_RATES, | |
225 | .formats = AIC26_FORMATS, | |
226 | }, | |
227 | .capture = { | |
228 | .stream_name = "Capture", | |
229 | .channels_min = 2, | |
230 | .channels_max = 2, | |
231 | .rates = AIC26_RATES, | |
232 | .formats = AIC26_FORMATS, | |
233 | }, | |
6335d055 | 234 | .ops = &aic26_dai_ops, |
d8e3bb73 | 235 | }; |
d8e3bb73 GL |
236 | |
237 | /* --------------------------------------------------------------------- | |
238 | * ALSA controls | |
239 | */ | |
240 | static const char *aic26_capture_src_text[] = {"Mic", "Aux"}; | |
6900ab55 TI |
241 | static SOC_ENUM_SINGLE_DECL(aic26_capture_src_enum, |
242 | AIC26_REG_AUDIO_CTRL1, 12, | |
243 | aic26_capture_src_text); | |
d8e3bb73 GL |
244 | |
245 | static const struct snd_kcontrol_new aic26_snd_controls[] = { | |
246 | /* Output */ | |
247 | SOC_DOUBLE("PCM Playback Volume", AIC26_REG_DAC_GAIN, 8, 0, 0x7f, 1), | |
248 | SOC_DOUBLE("PCM Playback Switch", AIC26_REG_DAC_GAIN, 15, 7, 1, 1), | |
249 | SOC_SINGLE("PCM Capture Volume", AIC26_REG_ADC_GAIN, 8, 0x7f, 0), | |
250 | SOC_SINGLE("PCM Capture Mute", AIC26_REG_ADC_GAIN, 15, 1, 1), | |
251 | SOC_SINGLE("Keyclick activate", AIC26_REG_AUDIO_CTRL2, 15, 0x1, 0), | |
252 | SOC_SINGLE("Keyclick amplitude", AIC26_REG_AUDIO_CTRL2, 12, 0x7, 0), | |
253 | SOC_SINGLE("Keyclick frequency", AIC26_REG_AUDIO_CTRL2, 8, 0x7, 0), | |
254 | SOC_SINGLE("Keyclick period", AIC26_REG_AUDIO_CTRL2, 4, 0xf, 0), | |
255 | SOC_ENUM("Capture Source", aic26_capture_src_enum), | |
256 | }; | |
257 | ||
d8e3bb73 GL |
258 | /* --------------------------------------------------------------------- |
259 | * SPI device portion of driver: sysfs files for debugging | |
260 | */ | |
261 | ||
262 | static ssize_t aic26_keyclick_show(struct device *dev, | |
263 | struct device_attribute *attr, char *buf) | |
264 | { | |
265 | struct aic26 *aic26 = dev_get_drvdata(dev); | |
266 | int val, amp, freq, len; | |
267 | ||
5b0959d4 | 268 | val = snd_soc_read(aic26->codec, AIC26_REG_AUDIO_CTRL2); |
d8e3bb73 GL |
269 | amp = (val >> 12) & 0x7; |
270 | freq = (125 << ((val >> 8) & 0x7)) >> 1; | |
271 | len = 2 * (1 + ((val >> 4) & 0xf)); | |
272 | ||
273 | return sprintf(buf, "amp=%x freq=%iHz len=%iclks\n", amp, freq, len); | |
274 | } | |
275 | ||
276 | /* Any write to the keyclick attribute will trigger the keyclick event */ | |
277 | static ssize_t aic26_keyclick_set(struct device *dev, | |
278 | struct device_attribute *attr, | |
279 | const char *buf, size_t count) | |
280 | { | |
281 | struct aic26 *aic26 = dev_get_drvdata(dev); | |
d8e3bb73 | 282 | |
5b0959d4 MB |
283 | snd_soc_update_bits(aic26->codec, AIC26_REG_AUDIO_CTRL2, |
284 | 0x8000, 0x800); | |
d8e3bb73 GL |
285 | |
286 | return count; | |
287 | } | |
288 | ||
9cce39a1 | 289 | static DEVICE_ATTR(keyclick, 0644, aic26_keyclick_show, aic26_keyclick_set); |
d8e3bb73 GL |
290 | |
291 | /* --------------------------------------------------------------------- | |
f0fba2ad | 292 | * SoC CODEC portion of driver: probe and release routines |
d8e3bb73 | 293 | */ |
f0fba2ad | 294 | static int aic26_probe(struct snd_soc_codec *codec) |
d8e3bb73 | 295 | { |
f8f11795 | 296 | struct aic26 *aic26 = dev_get_drvdata(codec->dev); |
5b0959d4 | 297 | int ret, reg; |
d8e3bb73 | 298 | |
f8f11795 LPC |
299 | aic26->codec = codec; |
300 | ||
d8e3bb73 | 301 | /* Reset the codec to power on defaults */ |
12201398 | 302 | snd_soc_write(codec, AIC26_REG_RESET, 0xBB00); |
d8e3bb73 GL |
303 | |
304 | /* Power up CODEC */ | |
12201398 | 305 | snd_soc_write(codec, AIC26_REG_POWER_CTRL, 0); |
d8e3bb73 GL |
306 | |
307 | /* Audio Control 3 (master mode, fsref rate) */ | |
12201398 | 308 | reg = snd_soc_read(codec, AIC26_REG_AUDIO_CTRL3); |
d8e3bb73 GL |
309 | reg &= ~0xf800; |
310 | reg |= 0x0800; /* set master mode */ | |
12201398 | 311 | snd_soc_write(codec, AIC26_REG_AUDIO_CTRL3, reg); |
d8e3bb73 | 312 | |
d8e3bb73 GL |
313 | /* Register the sysfs files for debugging */ |
314 | /* Create SysFS files */ | |
f0fba2ad | 315 | ret = device_create_file(codec->dev, &dev_attr_keyclick); |
64089b84 | 316 | if (ret) |
f0fba2ad | 317 | dev_info(codec->dev, "error creating sysfs files\n"); |
d8e3bb73 | 318 | |
d8e3bb73 GL |
319 | return 0; |
320 | } | |
321 | ||
a180ba45 | 322 | static const struct snd_soc_codec_driver aic26_soc_codec_dev = { |
f0fba2ad | 323 | .probe = aic26_probe, |
40be1e60 KM |
324 | .component_driver = { |
325 | .controls = aic26_snd_controls, | |
326 | .num_controls = ARRAY_SIZE(aic26_snd_controls), | |
327 | .dapm_widgets = tlv320aic26_dapm_widgets, | |
328 | .num_dapm_widgets = ARRAY_SIZE(tlv320aic26_dapm_widgets), | |
329 | .dapm_routes = tlv320aic26_dapm_routes, | |
330 | .num_dapm_routes = ARRAY_SIZE(tlv320aic26_dapm_routes), | |
331 | }, | |
f0fba2ad LG |
332 | }; |
333 | ||
7fbdeb80 MB |
334 | static const struct regmap_config aic26_regmap = { |
335 | .reg_bits = 16, | |
336 | .val_bits = 16, | |
337 | }; | |
338 | ||
f0fba2ad LG |
339 | /* --------------------------------------------------------------------- |
340 | * SPI device portion of driver: probe and release routines and SPI | |
341 | * driver registration. | |
342 | */ | |
343 | static int aic26_spi_probe(struct spi_device *spi) | |
d8e3bb73 | 344 | { |
f0fba2ad LG |
345 | struct aic26 *aic26; |
346 | int ret; | |
d8e3bb73 | 347 | |
f0fba2ad LG |
348 | dev_dbg(&spi->dev, "probing tlv320aic26 spi device\n"); |
349 | ||
350 | /* Allocate driver data */ | |
a8163023 | 351 | aic26 = devm_kzalloc(&spi->dev, sizeof *aic26, GFP_KERNEL); |
f0fba2ad LG |
352 | if (!aic26) |
353 | return -ENOMEM; | |
d8e3bb73 | 354 | |
7fbdeb80 MB |
355 | aic26->regmap = devm_regmap_init_spi(spi, &aic26_regmap); |
356 | if (IS_ERR(aic26->regmap)) | |
357 | return PTR_ERR(aic26->regmap); | |
358 | ||
f0fba2ad LG |
359 | /* Initialize the driver data */ |
360 | aic26->spi = spi; | |
361 | dev_set_drvdata(&spi->dev, aic26); | |
362 | aic26->master = 1; | |
363 | ||
364 | ret = snd_soc_register_codec(&spi->dev, | |
365 | &aic26_soc_codec_dev, &aic26_dai, 1); | |
f0fba2ad | 366 | return ret; |
f0fba2ad LG |
367 | } |
368 | ||
369 | static int aic26_spi_remove(struct spi_device *spi) | |
370 | { | |
371 | snd_soc_unregister_codec(&spi->dev); | |
d8e3bb73 GL |
372 | return 0; |
373 | } | |
374 | ||
375 | static struct spi_driver aic26_spi = { | |
376 | .driver = { | |
f0fba2ad | 377 | .name = "tlv320aic26-codec", |
d8e3bb73 GL |
378 | }, |
379 | .probe = aic26_spi_probe, | |
380 | .remove = aic26_spi_remove, | |
381 | }; | |
382 | ||
9bb280a2 | 383 | module_spi_driver(aic26_spi); |