2 * ALSA SoC TLV320AIC23 codec driver
4 * Author: Arun KS, <arunks@mistralsolutions.com>
5 * Copyright: (C) 2008 Mistral Solutions Pvt Ltd.,
7 * Based on sound/soc/codecs/wm8731.c by Richard Purdie
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.
14 * The AIC23 is a driver for a low power stereo audio
17 * The machine layer should disable unsupported inputs/outputs by
18 * snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc.
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
26 #include <linux/i2c.h>
27 #include <linux/platform_device.h>
28 #include <sound/core.h>
29 #include <sound/pcm.h>
30 #include <sound/pcm_params.h>
31 #include <sound/soc.h>
32 #include <sound/soc-dapm.h>
33 #include <sound/tlv.h>
34 #include <sound/initval.h>
36 #include "tlv320aic23.h"
38 #define AIC23_VERSION "0.1"
41 * AIC23 register cache
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 */
51 * read tlv320aic23 register cache
53 static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
54 *codec, unsigned int reg)
56 u16 *cache = codec->reg_cache;
57 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
63 * write tlv320aic23 register cache
65 static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
68 u16 *cache = codec->reg_cache;
69 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
75 * write to the tlv320aic23 register space
77 static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
83 /* TLV320AIC23 has 7 bit address and 9 bits of data
84 * so we need to switch one data bit into reg and rest
88 if ((reg < 0 || reg > 9) && (reg != 15)) {
89 printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg);
93 data[0] = (reg << 1) | (value >> 8 & 0x01);
94 data[1] = value & 0xff;
96 tlv320aic23_write_reg_cache(codec, reg, value);
98 if (codec->hw_write(codec->control_data, data, 2) == 2)
101 printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__,
107 static const char *rec_src_text[] = { "Line", "Mic" };
108 static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
110 static const struct soc_enum rec_src_enum =
111 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
113 static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
114 SOC_DAPM_ENUM("Input Select", rec_src_enum);
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);
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);
125 static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
126 struct snd_ctl_elem_value *ucontrol)
128 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
131 val = (ucontrol->value.integer.value[0] & 0x07);
133 /* linear conversion to userspace
140 val = (val >= 4) ? 4 : (3 - val);
142 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
143 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
148 static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
149 struct snd_ctl_elem_value *ucontrol)
151 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
154 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
156 val = (val >= 4) ? 4 : (3 - val);
157 ucontrol->value.integer.value[0] = val;
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) }
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),
186 /* add non dapm controls */
187 static int tlv320aic23_add_controls(struct snd_soc_codec *codec)
192 for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) {
193 err = snd_ctl_add(codec->card,
194 snd_soc_cnew(&tlv320aic23_snd_controls[i],
204 /* PGA Mixer controls for Line and Mic switch */
205 static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
206 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
207 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
208 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
211 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
212 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
213 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
214 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
215 &tlv320aic23_rec_src_mux_controls),
216 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
217 &tlv320aic23_output_mixer_controls[0],
218 ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
219 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
220 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
222 SND_SOC_DAPM_OUTPUT("LHPOUT"),
223 SND_SOC_DAPM_OUTPUT("RHPOUT"),
224 SND_SOC_DAPM_OUTPUT("LOUT"),
225 SND_SOC_DAPM_OUTPUT("ROUT"),
227 SND_SOC_DAPM_INPUT("LLINEIN"),
228 SND_SOC_DAPM_INPUT("RLINEIN"),
230 SND_SOC_DAPM_INPUT("MICIN"),
233 static const struct snd_soc_dapm_route intercon[] = {
235 {"Output Mixer", "Line Bypass Switch", "Line Input"},
236 {"Output Mixer", "Playback Switch", "DAC"},
237 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
240 {"RHPOUT", NULL, "Output Mixer"},
241 {"LHPOUT", NULL, "Output Mixer"},
242 {"LOUT", NULL, "Output Mixer"},
243 {"ROUT", NULL, "Output Mixer"},
246 {"Line Input", "NULL", "LLINEIN"},
247 {"Line Input", "NULL", "RLINEIN"},
249 {"Mic Input", "NULL", "MICIN"},
252 {"Capture Source", "Line", "Line Input"},
253 {"Capture Source", "Mic", "Mic Input"},
254 {"ADC", NULL, "Capture Source"},
258 /* AIC23 driver data */
260 struct snd_soc_codec codec;
267 * Common Crystals used
268 * 11.2896 Mhz /128 = *88.2k /192 = 58.8k
269 * 12.0000 Mhz /125 = *96k /136 = 88.235K
270 * 12.2880 Mhz /128 = *96k /192 = 64k
271 * 16.9344 Mhz /128 = 132.3k /192 = *88.2k
272 * 18.4320 Mhz /128 = 144k /192 = *96k
276 * Normal BOSR 0-256/2 = 128, 1-384/2 = 192
277 * USB BOSR 0-250/2 = 125, 1-272/2 = 136
279 static const int bosr_usb_divisor_table[] = {
282 #define LOWER_GROUP ((1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<6) | (1<<7))
283 #define UPPER_GROUP ((1<<8) | (1<<9) | (1<<10) | (1<<11) | (1<<15))
284 static const unsigned short sr_valid_mask[] = {
285 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 0*/
286 LOWER_GROUP|UPPER_GROUP, /* Normal, bosr - 1*/
287 LOWER_GROUP, /* Usb, bosr - 0*/
288 UPPER_GROUP, /* Usb, bosr - 1*/
291 * Every divisor is a factor of 11*12
293 #define SR_MULT (11*12)
294 #define A(x) (x) ? (SR_MULT/x) : 0
295 static const unsigned char sr_adc_mult_table[] = {
296 A(2), A(2), A(12), A(12), A(0), A(0), A(3), A(1),
297 A(2), A(2), A(11), A(11), A(0), A(0), A(0), A(1)
299 static const unsigned char sr_dac_mult_table[] = {
300 A(2), A(12), A(2), A(12), A(0), A(0), A(3), A(1),
301 A(2), A(11), A(2), A(11), A(0), A(0), A(0), A(1)
304 static unsigned get_score(int adc, int adc_l, int adc_h, int need_adc,
305 int dac, int dac_l, int dac_h, int need_dac)
307 if ((adc >= adc_l) && (adc <= adc_h) &&
308 (dac >= dac_l) && (dac <= dac_h)) {
309 int diff_adc = need_adc - adc;
310 int diff_dac = need_dac - dac;
311 return abs(diff_adc) + abs(diff_dac);
316 static int find_rate(int mclk, u32 need_adc, u32 need_dac)
322 unsigned best_score = UINT_MAX;
323 int adc_l, adc_h, dac_l, dac_h;
328 * rates given are +/- 1/32
330 adc_l = need_adc - (need_adc >> 5);
331 adc_h = need_adc + (need_adc >> 5);
332 dac_l = need_dac - (need_dac >> 5);
333 dac_h = need_dac + (need_dac >> 5);
334 for (i = 0; i < ARRAY_SIZE(bosr_usb_divisor_table); i++) {
335 int base = mclk / bosr_usb_divisor_table[i];
336 int mask = sr_valid_mask[i];
337 for (j = 0; j < ARRAY_SIZE(sr_adc_mult_table);
344 adc = base * sr_adc_mult_table[j];
345 dac = base * sr_dac_mult_table[j];
346 score = get_score(adc, adc_l, adc_h, need_adc,
347 dac, dac_l, dac_h, need_dac);
348 if (best_score > score) {
354 score = get_score((adc >> 1), adc_l, adc_h, need_adc,
355 (dac >> 1), dac_l, dac_h, need_dac);
356 /* prefer to have a /2 */
357 if ((score != UINT_MAX) && (best_score >= score)) {
365 return (best_j << 2) | best_i | (best_div << TLV320AIC23_CLKIN_SHIFT);
369 static void get_current_sample_rates(struct snd_soc_codec *codec, int mclk,
370 u32 *sample_rate_adc, u32 *sample_rate_dac)
372 int src = tlv320aic23_read_reg_cache(codec, TLV320AIC23_SRATE);
373 int sr = (src >> 2) & 0x0f;
374 int val = (mclk / bosr_usb_divisor_table[src & 3]);
375 int adc = (val * sr_adc_mult_table[sr]) / SR_MULT;
376 int dac = (val * sr_dac_mult_table[sr]) / SR_MULT;
377 if (src & TLV320AIC23_CLKIN_HALF) {
381 *sample_rate_adc = adc;
382 *sample_rate_dac = dac;
386 static int set_sample_rate_control(struct snd_soc_codec *codec, int mclk,
387 u32 sample_rate_adc, u32 sample_rate_dac)
389 /* Search for the right sample rate */
390 int data = find_rate(mclk, sample_rate_adc, sample_rate_dac);
392 printk(KERN_ERR "%s:Invalid rate %u,%u requested\n",
393 __func__, sample_rate_adc, sample_rate_dac);
396 tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
400 get_current_sample_rates(codec, mclk, &adc, &dac);
401 printk(KERN_DEBUG "actual samplerate = %u,%u reg=%x\n",
408 static int tlv320aic23_add_widgets(struct snd_soc_codec *codec)
410 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
411 ARRAY_SIZE(tlv320aic23_dapm_widgets));
413 /* set up audio path interconnects */
414 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
416 snd_soc_dapm_new_widgets(codec);
420 static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
421 struct snd_pcm_hw_params *params)
423 struct snd_soc_pcm_runtime *rtd = substream->private_data;
424 struct snd_soc_device *socdev = rtd->socdev;
425 struct snd_soc_codec *codec = socdev->codec;
428 struct aic23 *aic23 = container_of(codec, struct aic23, codec);
429 u32 sample_rate_adc = aic23->requested_adc;
430 u32 sample_rate_dac = aic23->requested_dac;
431 u32 sample_rate = params_rate(params);
433 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
434 aic23->requested_dac = sample_rate_dac = sample_rate;
435 if (!sample_rate_adc)
436 sample_rate_adc = sample_rate;
438 aic23->requested_adc = sample_rate_adc = sample_rate;
439 if (!sample_rate_dac)
440 sample_rate_dac = sample_rate;
442 ret = set_sample_rate_control(codec, aic23->mclk, sample_rate_adc,
448 tlv320aic23_read_reg_cache(codec,
449 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
450 switch (params_format(params)) {
451 case SNDRV_PCM_FORMAT_S16_LE:
453 case SNDRV_PCM_FORMAT_S20_3LE:
454 iface_reg |= (0x01 << 2);
456 case SNDRV_PCM_FORMAT_S24_LE:
457 iface_reg |= (0x02 << 2);
459 case SNDRV_PCM_FORMAT_S32_LE:
460 iface_reg |= (0x03 << 2);
463 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
468 static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream)
470 struct snd_soc_pcm_runtime *rtd = substream->private_data;
471 struct snd_soc_device *socdev = rtd->socdev;
472 struct snd_soc_codec *codec = socdev->codec;
475 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
480 static void tlv320aic23_shutdown(struct snd_pcm_substream *substream)
482 struct snd_soc_pcm_runtime *rtd = substream->private_data;
483 struct snd_soc_device *socdev = rtd->socdev;
484 struct snd_soc_codec *codec = socdev->codec;
485 struct aic23 *aic23 = container_of(codec, struct aic23, codec);
488 if (!codec->active) {
490 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
492 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
493 aic23->requested_dac = 0;
495 aic23->requested_adc = 0;
498 static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
500 struct snd_soc_codec *codec = dai->codec;
503 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
505 reg |= TLV320AIC23_DACM_MUTE;
508 reg &= ~TLV320AIC23_DACM_MUTE;
510 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
515 static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
518 struct snd_soc_codec *codec = codec_dai->codec;
522 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
524 /* set master/slave audio interface */
525 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
526 case SND_SOC_DAIFMT_CBM_CFM:
527 iface_reg |= TLV320AIC23_MS_MASTER;
529 case SND_SOC_DAIFMT_CBS_CFS:
536 /* interface format */
537 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
538 case SND_SOC_DAIFMT_I2S:
539 iface_reg |= TLV320AIC23_FOR_I2S;
541 case SND_SOC_DAIFMT_DSP_A:
542 iface_reg |= TLV320AIC23_FOR_DSP;
544 case SND_SOC_DAIFMT_RIGHT_J:
546 case SND_SOC_DAIFMT_LEFT_J:
547 iface_reg |= TLV320AIC23_FOR_LJUST;
554 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
559 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
560 int clk_id, unsigned int freq, int dir)
562 struct snd_soc_codec *codec = codec_dai->codec;
563 struct aic23 *aic23 = container_of(codec, struct aic23, codec);
568 static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
569 enum snd_soc_bias_level level)
571 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
574 case SND_SOC_BIAS_ON:
575 /* vref/mid, osc on, dac unmute */
576 tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
578 case SND_SOC_BIAS_PREPARE:
580 case SND_SOC_BIAS_STANDBY:
581 /* everything off except vref/vmid, */
582 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040);
584 case SND_SOC_BIAS_OFF:
585 /* everything off, dac mute, inactive */
586 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
587 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
590 codec->bias_level = level;
594 #define AIC23_RATES SNDRV_PCM_RATE_8000_96000
595 #define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
596 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
598 struct snd_soc_dai tlv320aic23_dai = {
599 .name = "tlv320aic23",
601 .stream_name = "Playback",
604 .rates = AIC23_RATES,
605 .formats = AIC23_FORMATS,},
607 .stream_name = "Capture",
610 .rates = AIC23_RATES,
611 .formats = AIC23_FORMATS,},
613 .prepare = tlv320aic23_pcm_prepare,
614 .hw_params = tlv320aic23_hw_params,
615 .shutdown = tlv320aic23_shutdown,
618 .digital_mute = tlv320aic23_mute,
619 .set_fmt = tlv320aic23_set_dai_fmt,
620 .set_sysclk = tlv320aic23_set_dai_sysclk,
623 EXPORT_SYMBOL_GPL(tlv320aic23_dai);
625 static int tlv320aic23_suspend(struct platform_device *pdev,
628 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
629 struct snd_soc_codec *codec = socdev->codec;
631 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
632 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
637 static int tlv320aic23_resume(struct platform_device *pdev)
639 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
640 struct snd_soc_codec *codec = socdev->codec;
644 /* Sync reg_cache with the hardware */
645 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) {
646 u16 val = tlv320aic23_read_reg_cache(codec, reg);
647 tlv320aic23_write(codec, reg, val);
650 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
651 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level);
657 * initialise the AIC23 driver
658 * register the mixer and dsp interfaces with the kernel
660 static int tlv320aic23_init(struct snd_soc_device *socdev)
662 struct snd_soc_codec *codec = socdev->codec;
666 codec->name = "tlv320aic23";
667 codec->owner = THIS_MODULE;
668 codec->read = tlv320aic23_read_reg_cache;
669 codec->write = tlv320aic23_write;
670 codec->set_bias_level = tlv320aic23_set_bias_level;
671 codec->dai = &tlv320aic23_dai;
673 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg);
675 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL);
676 if (codec->reg_cache == NULL)
680 tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
683 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
685 printk(KERN_ERR "tlv320aic23: failed to create pcms\n");
689 /* power on device */
690 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
692 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
695 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
696 tlv320aic23_write(codec, TLV320AIC23_LINVOL,
697 (reg & (~TLV320AIC23_LIM_MUTED)) |
698 (TLV320AIC23_LRS_ENABLED));
700 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
701 tlv320aic23_write(codec, TLV320AIC23_RINVOL,
702 (reg & (~TLV320AIC23_LIM_MUTED)) |
703 TLV320AIC23_LRS_ENABLED);
705 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
706 tlv320aic23_write(codec, TLV320AIC23_ANLG,
707 (reg) & (~TLV320AIC23_BYPASS_ON) &
708 (~TLV320AIC23_MICM_MUTED));
710 /* Default output volume */
711 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
712 TLV320AIC23_DEFAULT_OUT_VOL &
713 TLV320AIC23_OUT_VOL_MASK);
714 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
715 TLV320AIC23_DEFAULT_OUT_VOL &
716 TLV320AIC23_OUT_VOL_MASK);
718 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
720 tlv320aic23_add_controls(codec);
721 tlv320aic23_add_widgets(codec);
722 ret = snd_soc_register_card(socdev);
724 printk(KERN_ERR "tlv320aic23: failed to register card\n");
731 snd_soc_free_pcms(socdev);
732 snd_soc_dapm_free(socdev);
734 kfree(codec->reg_cache);
737 static struct snd_soc_device *tlv320aic23_socdev;
739 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
741 * If the i2c layer weren't so broken, we could pass this kind of data
744 static int tlv320aic23_codec_probe(struct i2c_client *i2c,
745 const struct i2c_device_id *i2c_id)
747 struct snd_soc_device *socdev = tlv320aic23_socdev;
748 struct snd_soc_codec *codec = socdev->codec;
751 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
754 i2c_set_clientdata(i2c, codec);
755 codec->control_data = i2c;
757 ret = tlv320aic23_init(socdev);
759 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n");
769 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
771 put_device(&i2c->dev);
775 static const struct i2c_device_id tlv320aic23_id[] = {
780 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
782 static struct i2c_driver tlv320aic23_i2c_driver = {
784 .name = "tlv320aic23",
786 .probe = tlv320aic23_codec_probe,
787 .remove = __exit_p(tlv320aic23_i2c_remove),
788 .id_table = tlv320aic23_id,
793 static int tlv320aic23_probe(struct platform_device *pdev)
795 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
796 struct snd_soc_codec *codec;
800 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
802 aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL);
805 codec = &aic23->codec;
806 socdev->codec = codec;
807 mutex_init(&codec->mutex);
808 INIT_LIST_HEAD(&codec->dapm_widgets);
809 INIT_LIST_HEAD(&codec->dapm_paths);
811 tlv320aic23_socdev = socdev;
812 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
813 codec->hw_write = (hw_write_t) i2c_master_send;
814 codec->hw_read = NULL;
815 ret = i2c_add_driver(&tlv320aic23_i2c_driver);
817 printk(KERN_ERR "can't add i2c driver");
822 static int tlv320aic23_remove(struct platform_device *pdev)
824 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
825 struct snd_soc_codec *codec = socdev->codec;
826 struct aic23 *aic23 = container_of(codec, struct aic23, codec);
828 if (codec->control_data)
829 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
831 snd_soc_free_pcms(socdev);
832 snd_soc_dapm_free(socdev);
833 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
834 i2c_del_driver(&tlv320aic23_i2c_driver);
836 kfree(codec->reg_cache);
841 struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = {
842 .probe = tlv320aic23_probe,
843 .remove = tlv320aic23_remove,
844 .suspend = tlv320aic23_suspend,
845 .resume = tlv320aic23_resume,
847 EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23);
849 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
850 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
851 MODULE_LICENSE("GPL");