1 /*
2 * ALSA SoC TLV320AIC23 codec driver
3 *
4 * Author: Arun KS, <arunks@mistralsolutions.com>
5 * Copyright: (C) 2008 Mistral Solutions Pvt Ltd.,
6 *
7 * Based on sound/soc/codecs/wm8731.c by Richard Purdie
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * Notes:
14 * The AIC23 is a driver for a low power stereo audio
15 * codec tlv320aic23
16 *
17 * The machine layer should disable unsupported inputs/outputs by
18 * snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc.
19 */
20
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/pm.h>
26 #include <linux/i2c.h>
27 #include <linux/platform_device.h>
28 #include <linux/slab.h>
29 #include <sound/core.h>
30 #include <sound/pcm.h>
31 #include <sound/pcm_params.h>
32 #include <sound/soc.h>
33 #include <sound/tlv.h>
34 #include <sound/initval.h>
35
36 #include "tlv320aic23.h"
37
38 #define AIC23_VERSION "0.1"
39
40 /*
41 * AIC23 register cache
42 */
43 static const u16 tlv320aic23_reg[] = {
44 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */
45 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */
46 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */
47 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
48 };
49
50 /*
51 * read tlv320aic23 register cache
52 */
tlv320aic23_read_reg_cache(struct snd_soc_codec * codec,unsigned int reg)53 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
54 *codec, unsigned int reg)
55 {
56 u16 *cache = codec->reg_cache;
57 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
58 return -1;
59 return cache[reg];
60 }
61
62 /*
63 * write tlv320aic23 register cache
64 */
tlv320aic23_write_reg_cache(struct snd_soc_codec * codec,u8 reg,u16 value)65 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
66 u8 reg, u16 value)
67 {
68 u16 *cache = codec->reg_cache;
69 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
70 return;
71 cache[reg] = value;
72 }
73
74 /*
75 * write to the tlv320aic23 register space
76 */
tlv320aic23_write(struct snd_soc_codec * codec,unsigned int reg,unsigned int value)77 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
78 unsigned int value)
79 {
80
81 u8 data[2];
82
83 /* TLV320AIC23 has 7 bit address and 9 bits of data
84 * so we need to switch one data bit into reg and rest
85 * of data into val
86 */
87
88 if (reg > 9 && reg != 15) {
89 printk(KERN_WARNING "%s Invalid register R%u\n", __func__, reg);
90 return -1;
91 }
92
93 data[0] = (reg << 1) | (value >> 8 & 0x01);
94 data[1] = value & 0xff;
95
96 tlv320aic23_write_reg_cache(codec, reg, value);
97
98 if (codec->hw_write(codec->control_data, data, 2) == 2)
99 return 0;
100
101 printk(KERN_ERR "%s cannot write %03x to register R%u\n", __func__,
102 value, reg);
103
104 return -EIO;
105 }
106
107 static const char *rec_src_text[] = { "Line", "Mic" };
108 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
109
110 static const struct soc_enum rec_src_enum =
111 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
112
113 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
114 SOC_DAPM_ENUM("Input Select", rec_src_enum);
115
116 static const struct soc_enum tlv320aic23_rec_src =
117 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
118 static const struct soc_enum tlv320aic23_deemph =
119 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
120
121 static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
122 static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
123 static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
124
snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)125 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
126 struct snd_ctl_elem_value *ucontrol)
127 {
128 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
129 u16 val, reg;
130
131 val = (ucontrol->value.integer.value[0] & 0x07);
132
133 /* linear conversion to userspace
134 * 000 = -6db
135 * 001 = -9db
136 * 010 = -12db
137 * 011 = -18db (Min)
138 * 100 = 0db (Max)
139 */
140 val = (val >= 4) ? 4 : (3 - val);
141
142 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
143 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
144
145 return 0;
146 }
147
snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)148 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
149 struct snd_ctl_elem_value *ucontrol)
150 {
151 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
152 u16 val;
153
154 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
155 val = val >> 6;
156 val = (val >= 4) ? 4 : (3 - val);
157 ucontrol->value.integer.value[0] = val;
158 return 0;
159
160 }
161
162 #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
163 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
164 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
165 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
166 .tlv.p = (tlv_array), \
167 .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\
168 .put = snd_soc_tlv320aic23_put_volsw, \
169 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
170
171 static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
172 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
173 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
174 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
175 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
176 TLV320AIC23_RINVOL, 7, 1, 0),
177 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
178 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
179 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
180 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
181 SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG,
182 6, 4, 0, sidetone_vol_tlv),
183 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
184 };
185
186 /* PGA Mixer controls for Line and Mic switch */
187 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
188 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
189 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
190 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
191 };
192
193 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
194 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
195 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
196 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
197 &tlv320aic23_rec_src_mux_controls),
198 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
199 &tlv320aic23_output_mixer_controls[0],
200 ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
201 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
202 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
203
204 SND_SOC_DAPM_OUTPUT("LHPOUT"),
205 SND_SOC_DAPM_OUTPUT("RHPOUT"),
206 SND_SOC_DAPM_OUTPUT("LOUT"),
207 SND_SOC_DAPM_OUTPUT("ROUT"),
208
209 SND_SOC_DAPM_INPUT("LLINEIN"),
210 SND_SOC_DAPM_INPUT("RLINEIN"),
211
212 SND_SOC_DAPM_INPUT("MICIN"),
213 };
214
215 static const struct snd_soc_dapm_route intercon[] = {
216 /* Output Mixer */
217 {"Output Mixer", "Line Bypass Switch", "Line Input"},
218 {"Output Mixer", "Playback Switch", "DAC"},
219 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
220
221 /* Outputs */
222 {"RHPOUT", NULL, "Output Mixer"},
223 {"LHPOUT", NULL, "Output Mixer"},
224 {"LOUT", NULL, "Output Mixer"},
225 {"ROUT", NULL, "Output Mixer"},
226
227 /* Inputs */
228 {"Line Input", "NULL", "LLINEIN"},
229 {"Line Input", "NULL", "RLINEIN"},
230
231 {"Mic Input", "NULL", "MICIN"},
232
233 /* input mux */
234 {"Capture Source", "Line", "Line Input"},
235 {"Capture Source", "Mic", "Mic Input"},
236 {"ADC", NULL, "Capture Source"},
237
238 };
239
240 /* AIC23 driver data */
241 struct aic23 {
242 enum snd_soc_control_type control_type;
243 void *control_data;
244 int mclk;
245 int requested_adc;
246 int requested_dac;
247 };
248
249 /*
250 * Common Crystals used
251 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k
252 * 12.0000 Mhz /125 = *96k /136 = 88.235K
253 * 12.2880 Mhz /128 = *96k /192 = 64k
254 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k
255 * 18.4320 Mhz /128 = 144k /192 = *96k
256 */
257
258 /*
259 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192
260 * USB BOSR 0-250/2 = 125, 1-272/2 = 136
261 */
262 static const int bosr_usb_divisor_table[] = {
263 128, 125, 192, 136
264 };
265 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
266 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15))
267 static const unsigned short sr_valid_mask[] = {
268 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/
269 LOWER_GROUP, /* Usb, bosr - 0*/
270 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/
271 UPPER_GROUP, /* Usb, bosr - 1*/
272 };
273 /*
274 * Every divisor is a factor of 11*12
275 */
276 #define SR_MULT (11*12)
277 #define A(x) (SR_MULT/x)
278 static const unsigned char sr_adc_mult_table[] = {
279 A(2), A(2), A(12), A(12), 0, 0, A(3), A(1),
280 A(2), A(2), A(11), A(11), 0, 0, 0, A(1)
281 };
282 static const unsigned char sr_dac_mult_table[] = {
283 A(2), A(12), A(2), A(12), 0, 0, A(3), A(1),
284 A(2), A(11), A(2), A(11), 0, 0, 0, A(1)
285 };
286
get_score(int adc,int adc_l,int adc_h,int need_adc,int dac,int dac_l,int dac_h,int need_dac)287 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
288 int dac, int dac_l, int dac_h, int need_dac)
289 {
290 if ((adc >= adc_l) && (adc <= adc_h) &&
291 (dac >= dac_l) && (dac <= dac_h)) {
292 int diff_adc = need_adc - adc;
293 int diff_dac = need_dac - dac;
294 return abs(diff_adc) + abs(diff_dac);
295 }
296 return UINT_MAX;
297 }
298
find_rate(int mclk,u32 need_adc,u32 need_dac)299 static int find_rate(int mclk, u32 need_adc, u32 need_dac)
300 {
301 int i, j;
302 int best_i = -1;
303 int best_j = -1;
304 int best_div = 0;
305 unsigned best_score = UINT_MAX;
306 int adc_l, adc_h, dac_l, dac_h;
307
308 need_adc *= SR_MULT;
309 need_dac *= SR_MULT;
310 /*
311 * rates given are +/- 1/32
312 */
313 adc_l = need_adc - (need_adc >> 5);
314 adc_h = need_adc + (need_adc >> 5);
315 dac_l = need_dac - (need_dac >> 5);
316 dac_h = need_dac + (need_dac >> 5);
317 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
318 int base = mclk / bosr_usb_divisor_table[i];
319 int mask = sr_valid_mask[i];
320 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
321 j++, mask >>= 1) {
322 int adc;
323 int dac;
324 int score;
325 if ((mask & 1) == 0)
326 continue;
327 adc = base * sr_adc_mult_table[j];
328 dac = base * sr_dac_mult_table[j];
329 score = get_score(adc, adc_l, adc_h, need_adc,
330 dac, dac_l, dac_h, need_dac);
331 if (best_score > score) {
332 best_score = score;
333 best_i = i;
334 best_j = j;
335 best_div = 0;
336 }
337 score = get_score((adc >> 1), adc_l, adc_h, need_adc,
338 (dac >> 1), dac_l, dac_h, need_dac);
339 /* prefer to have a /2 */
340 if ((score != UINT_MAX) && (best_score >= score)) {
341 best_score = score;
342 best_i = i;
343 best_j = j;
344 best_div = 1;
345 }
346 }
347 }
348 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
349 }
350
351 #ifdef DEBUG
get_current_sample_rates(struct snd_soc_codec * codec,int mclk,u32 * sample_rate_adc,u32 * sample_rate_dac)352 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
353 u32 *sample_rate_adc, u32 *sample_rate_dac)
354 {
355 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE);
356 int sr = (src >> 2) & 0x0f;
357 int val = (mclk / bosr_usb_divisor_table[src & 3]);
358 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
359 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
360 if (src & TLV320AIC23_CLKIN_HALF) {
361 adc >>= 1;
362 dac >>= 1;
363 }
364 *sample_rate_adc = adc;
365 *sample_rate_dac = dac;
366 }
367 #endif
368
set_sample_rate_control(struct snd_soc_codec * codec,int mclk,u32 sample_rate_adc,u32 sample_rate_dac)369 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
370 u32 sample_rate_adc, u32 sample_rate_dac)
371 {
372 /* Search for the right sample rate */
373 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
374 if (data < 0) {
375 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
376 __func__, sample_rate_adc, sample_rate_dac);
377 return -EINVAL;
378 }
379 tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
380 #ifdef DEBUG
381 {
382 u32 adc, dac;
383 get_current_sample_rates(codec, mclk, &adc, &dac);
384 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
385 adc, dac, data);
386 }
387 #endif
388 return 0;
389 }
390
tlv320aic23_add_widgets(struct snd_soc_codec * codec)391 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec)
392 {
393 struct snd_soc_dapm_context *dapm = &codec->dapm;
394
395 snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
396 ARRAY_SIZE(tlv320aic23_dapm_widgets));
397 /* set up audio path interconnects */
398 snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
399
400 return 0;
401 }
402
tlv320aic23_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)403 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
404 struct snd_pcm_hw_params *params,
405 struct snd_soc_dai *dai)
406 {
407 struct snd_soc_pcm_runtime *rtd = substream->private_data;
408 struct snd_soc_codec *codec = rtd->codec;
409 u16 iface_reg;
410 int ret;
411 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
412 u32 sample_rate_adc = aic23->requested_adc;
413 u32 sample_rate_dac = aic23->requested_dac;
414 u32 sample_rate = params_rate(params);
415
416 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
417 aic23->requested_dac = sample_rate_dac = sample_rate;
418 if (!sample_rate_adc)
419 sample_rate_adc = sample_rate;
420 } else {
421 aic23->requested_adc = sample_rate_adc = sample_rate;
422 if (!sample_rate_dac)
423 sample_rate_dac = sample_rate;
424 }
425 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
426 sample_rate_dac);
427 if (ret < 0)
428 return ret;
429
430 iface_reg =
431 tlv320aic23_read_reg_cache(codec,
432 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
433 switch (params_format(params)) {
434 case SNDRV_PCM_FORMAT_S16_LE:
435 break;
436 case SNDRV_PCM_FORMAT_S20_3LE:
437 iface_reg |= (0x01 << 2);
438 break;
439 case SNDRV_PCM_FORMAT_S24_LE:
440 iface_reg |= (0x02 << 2);
441 break;
442 case SNDRV_PCM_FORMAT_S32_LE:
443 iface_reg |= (0x03 << 2);
444 break;
445 }
446 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
447
448 return 0;
449 }
450
tlv320aic23_pcm_prepare(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)451 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream,
452 struct snd_soc_dai *dai)
453 {
454 struct snd_soc_pcm_runtime *rtd = substream->private_data;
455 struct snd_soc_codec *codec = rtd->codec;
456
457 /* set active */
458 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
459
460 return 0;
461 }
462
tlv320aic23_shutdown(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)463 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream,
464 struct snd_soc_dai *dai)
465 {
466 struct snd_soc_pcm_runtime *rtd = substream->private_data;
467 struct snd_soc_codec *codec = rtd->codec;
468 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
469
470 /* deactivate */
471 if (!codec->active) {
472 udelay(50);
473 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
474 }
475 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
476 aic23->requested_dac = 0;
477 else
478 aic23->requested_adc = 0;
479 }
480
tlv320aic23_mute(struct snd_soc_dai * dai,int mute)481 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
482 {
483 struct snd_soc_codec *codec = dai->codec;
484 u16 reg;
485
486 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
487 if (mute)
488 reg |= TLV320AIC23_DACM_MUTE;
489
490 else
491 reg &= ~TLV320AIC23_DACM_MUTE;
492
493 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
494
495 return 0;
496 }
497
tlv320aic23_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)498 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
499 unsigned int fmt)
500 {
501 struct snd_soc_codec *codec = codec_dai->codec;
502 u16 iface_reg;
503
504 iface_reg =
505 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
506
507 /* set master/slave audio interface */
508 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
509 case SND_SOC_DAIFMT_CBM_CFM:
510 iface_reg |= TLV320AIC23_MS_MASTER;
511 break;
512 case SND_SOC_DAIFMT_CBS_CFS:
513 break;
514 default:
515 return -EINVAL;
516
517 }
518
519 /* interface format */
520 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
521 case SND_SOC_DAIFMT_I2S:
522 iface_reg |= TLV320AIC23_FOR_I2S;
523 break;
524 case SND_SOC_DAIFMT_DSP_A:
525 iface_reg |= TLV320AIC23_LRP_ON;
526 case SND_SOC_DAIFMT_DSP_B:
527 iface_reg |= TLV320AIC23_FOR_DSP;
528 break;
529 case SND_SOC_DAIFMT_RIGHT_J:
530 break;
531 case SND_SOC_DAIFMT_LEFT_J:
532 iface_reg |= TLV320AIC23_FOR_LJUST;
533 break;
534 default:
535 return -EINVAL;
536
537 }
538
539 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
540
541 return 0;
542 }
543
tlv320aic23_set_dai_sysclk(struct snd_soc_dai * codec_dai,int clk_id,unsigned int freq,int dir)544 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
545 int clk_id, unsigned int freq, int dir)
546 {
547 struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai);
548 aic23->mclk = freq;
549 return 0;
550 }
551
tlv320aic23_set_bias_level(struct snd_soc_codec * codec,enum snd_soc_bias_level level)552 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
553 enum snd_soc_bias_level level)
554 {
555 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
556
557 switch (level) {
558 case SND_SOC_BIAS_ON:
559 /* vref/mid, osc on, dac unmute */
560 reg &= ~(TLV320AIC23_DEVICE_PWR_OFF | TLV320AIC23_OSC_OFF | \
561 TLV320AIC23_DAC_OFF);
562 tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
563 break;
564 case SND_SOC_BIAS_PREPARE:
565 break;
566 case SND_SOC_BIAS_STANDBY:
567 /* everything off except vref/vmid, */
568 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | \
569 TLV320AIC23_CLK_OFF);
570 break;
571 case SND_SOC_BIAS_OFF:
572 /* everything off, dac mute, inactive */
573 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
574 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
575 break;
576 }
577 codec->dapm.bias_level = level;
578 return 0;
579 }
580
581 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000
582 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
583 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
584
585 static struct snd_soc_dai_ops tlv320aic23_dai_ops = {
586 .prepare = tlv320aic23_pcm_prepare,
587 .hw_params = tlv320aic23_hw_params,
588 .shutdown = tlv320aic23_shutdown,
589 .digital_mute = tlv320aic23_mute,
590 .set_fmt = tlv320aic23_set_dai_fmt,
591 .set_sysclk = tlv320aic23_set_dai_sysclk,
592 };
593
594 static struct snd_soc_dai_driver tlv320aic23_dai = {
595 .name = "tlv320aic23-hifi",
596 .playback = {
597 .stream_name = "Playback",
598 .channels_min = 2,
599 .channels_max = 2,
600 .rates = AIC23_RATES,
601 .formats = AIC23_FORMATS,},
602 .capture = {
603 .stream_name = "Capture",
604 .channels_min = 2,
605 .channels_max = 2,
606 .rates = AIC23_RATES,
607 .formats = AIC23_FORMATS,},
608 .ops = &tlv320aic23_dai_ops,
609 };
610
tlv320aic23_suspend(struct snd_soc_codec * codec,pm_message_t state)611 static int tlv320aic23_suspend(struct snd_soc_codec *codec,
612 pm_message_t state)
613 {
614 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
615
616 return 0;
617 }
618
tlv320aic23_resume(struct snd_soc_codec * codec)619 static int tlv320aic23_resume(struct snd_soc_codec *codec)
620 {
621 u16 reg;
622
623 /* Sync reg_cache with the hardware */
624 for (reg = 0; reg <= TLV320AIC23_ACTIVE; reg++) {
625 u16 val = tlv320aic23_read_reg_cache(codec, reg);
626 tlv320aic23_write(codec, reg, val);
627 }
628 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
629
630 return 0;
631 }
632
tlv320aic23_probe(struct snd_soc_codec * codec)633 static int tlv320aic23_probe(struct snd_soc_codec *codec)
634 {
635 struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
636 int reg;
637
638 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
639 codec->control_data = aic23->control_data;
640 codec->hw_write = (hw_write_t)i2c_master_send;
641 codec->hw_read = NULL;
642
643 /* Reset codec */
644 tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
645
646 /* power on device */
647 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
648
649 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
650
651 /* Unmute input */
652 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
653 tlv320aic23_write(codec, TLV320AIC23_LINVOL,
654 (reg & (~TLV320AIC23_LIM_MUTED)) |
655 (TLV320AIC23_LRS_ENABLED));
656
657 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
658 tlv320aic23_write(codec, TLV320AIC23_RINVOL,
659 (reg & (~TLV320AIC23_LIM_MUTED)) |
660 TLV320AIC23_LRS_ENABLED);
661
662 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
663 tlv320aic23_write(codec, TLV320AIC23_ANLG,
664 (reg) & (~TLV320AIC23_BYPASS_ON) &
665 (~TLV320AIC23_MICM_MUTED));
666
667 /* Default output volume */
668 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
669 TLV320AIC23_DEFAULT_OUT_VOL &
670 TLV320AIC23_OUT_VOL_MASK);
671 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
672 TLV320AIC23_DEFAULT_OUT_VOL &
673 TLV320AIC23_OUT_VOL_MASK);
674
675 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
676
677 snd_soc_add_controls(codec, tlv320aic23_snd_controls,
678 ARRAY_SIZE(tlv320aic23_snd_controls));
679 tlv320aic23_add_widgets(codec);
680
681 return 0;
682 }
683
tlv320aic23_remove(struct snd_soc_codec * codec)684 static int tlv320aic23_remove(struct snd_soc_codec *codec)
685 {
686 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
687 return 0;
688 }
689
690 static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = {
691 .reg_cache_size = ARRAY_SIZE(tlv320aic23_reg),
692 .reg_word_size = sizeof(u16),
693 .reg_cache_default = tlv320aic23_reg,
694 .probe = tlv320aic23_probe,
695 .remove = tlv320aic23_remove,
696 .suspend = tlv320aic23_suspend,
697 .resume = tlv320aic23_resume,
698 .read = tlv320aic23_read_reg_cache,
699 .write = tlv320aic23_write,
700 .set_bias_level = tlv320aic23_set_bias_level,
701 };
702
703 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
704 /*
705 * If the i2c layer weren't so broken, we could pass this kind of data
706 * around
707 */
tlv320aic23_codec_probe(struct i2c_client * i2c,const struct i2c_device_id * i2c_id)708 static int tlv320aic23_codec_probe(struct i2c_client *i2c,
709 const struct i2c_device_id *i2c_id)
710 {
711 struct aic23 *aic23;
712 int ret;
713
714 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
715 return -EINVAL;
716
717 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL);
718 if (aic23 == NULL)
719 return -ENOMEM;
720
721 i2c_set_clientdata(i2c, aic23);
722 aic23->control_data = i2c;
723 aic23->control_type = SND_SOC_I2C;
724
725 ret = snd_soc_register_codec(&i2c->dev,
726 &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1);
727 if (ret < 0)
728 kfree(aic23);
729 return ret;
730 }
tlv320aic23_i2c_remove(struct i2c_client * i2c)731 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
732 {
733 snd_soc_unregister_codec(&i2c->dev);
734 kfree(i2c_get_clientdata(i2c));
735 return 0;
736 }
737
738 static const struct i2c_device_id tlv320aic23_id[] = {
739 {"tlv320aic23", 0},
740 {}
741 };
742
743 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
744
745 static struct i2c_driver tlv320aic23_i2c_driver = {
746 .driver = {
747 .name = "tlv320aic23-codec",
748 },
749 .probe = tlv320aic23_codec_probe,
750 .remove = __exit_p(tlv320aic23_i2c_remove),
751 .id_table = tlv320aic23_id,
752 };
753
754 #endif
755
tlv320aic23_modinit(void)756 static int __init tlv320aic23_modinit(void)
757 {
758 int ret;
759 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
760 ret = i2c_add_driver(&tlv320aic23_i2c_driver);
761 if (ret != 0) {
762 printk(KERN_ERR "Failed to register TLV320AIC23 I2C driver: %d\n",
763 ret);
764 }
765 #endif
766 return ret;
767 }
768 module_init(tlv320aic23_modinit);
769
tlv320aic23_exit(void)770 static void __exit tlv320aic23_exit(void)
771 {
772 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
773 i2c_del_driver(&tlv320aic23_i2c_driver);
774 #endif
775 }
776 module_exit(tlv320aic23_exit);
777
778 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
779 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
780 MODULE_LICENSE("GPL");
781