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-rw-r--r--sound/soc/codecs/tlv320aic23.c714
1 files changed, 714 insertions, 0 deletions
diff --git a/sound/soc/codecs/tlv320aic23.c b/sound/soc/codecs/tlv320aic23.c
new file mode 100644
index 000000000000..bac7815e00fb
--- /dev/null
+++ b/sound/soc/codecs/tlv320aic23.c
@@ -0,0 +1,714 @@
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 <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>
35
36#include "tlv320aic23.h"
37
38#define AIC23_VERSION "0.1"
39
40struct tlv320aic23_srate_reg_info {
41 u32 sample_rate;
42 u8 control; /* SR3, SR2, SR1, SR0 and BOSR */
43 u8 divider; /* if 0 CLKIN = MCLK, if 1 CLKIN = MCLK/2 */
44};
45
46/*
47 * AIC23 register cache
48 */
49static const u16 tlv320aic23_reg[] = {
50 0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */
51 0x001A, 0x0004, 0x0007, 0x0001, /* 4 */
52 0x0020, 0x0000, 0x0000, 0x0000, /* 8 */
53 0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
54};
55
56/*
57 * read tlv320aic23 register cache
58 */
59static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
60 *codec, unsigned int reg)
61{
62 u16 *cache = codec->reg_cache;
63 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
64 return -1;
65 return cache[reg];
66}
67
68/*
69 * write tlv320aic23 register cache
70 */
71static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
72 u8 reg, u16 value)
73{
74 u16 *cache = codec->reg_cache;
75 if (reg >= ARRAY_SIZE(tlv320aic23_reg))
76 return;
77 cache[reg] = value;
78}
79
80/*
81 * write to the tlv320aic23 register space
82 */
83static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
84 unsigned int value)
85{
86
87 u8 data;
88
89 /* TLV320AIC23 has 7 bit address and 9 bits of data
90 * so we need to switch one data bit into reg and rest
91 * of data into val
92 */
93
94 if ((reg < 0 || reg > 9) && (reg != 15)) {
95 printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg);
96 return -1;
97 }
98
99 data = (reg << 1) | (value >> 8 & 0x01);
100
101 tlv320aic23_write_reg_cache(codec, reg, value);
102
103 if (codec->hw_write(codec->control_data, data,
104 (value & 0xff)) == 0)
105 return 0;
106
107 printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__,
108 value, reg);
109
110 return -EIO;
111}
112
113static const char *rec_src_text[] = { "Line", "Mic" };
114static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
115
116static const struct soc_enum rec_src_enum =
117 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
118
119static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
120SOC_DAPM_ENUM("Input Select", rec_src_enum);
121
122static const struct soc_enum tlv320aic23_rec_src =
123 SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
124static const struct soc_enum tlv320aic23_deemph =
125 SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
126
127static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
128static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
129static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0);
130
131static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol,
132 struct snd_ctl_elem_value *ucontrol)
133{
134 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
135 u16 val, reg;
136
137 val = (ucontrol->value.integer.value[0] & 0x07);
138
139 /* linear conversion to userspace
140 * 000 = -6db
141 * 001 = -9db
142 * 010 = -12db
143 * 011 = -18db (Min)
144 * 100 = 0db (Max)
145 */
146 val = (val >= 4) ? 4 : (3 - val);
147
148 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0);
149 tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6));
150
151 return 0;
152}
153
154static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol,
155 struct snd_ctl_elem_value *ucontrol)
156{
157 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
158 u16 val;
159
160 val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0);
161 val = val >> 6;
162 val = (val >= 4) ? 4 : (3 - val);
163 ucontrol->value.integer.value[0] = val;
164 return 0;
165
166}
167
168#define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
169{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
170 .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
171 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
172 .tlv.p = (tlv_array), \
173 .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\
174 .put = snd_soc_tlv320aic23_put_volsw, \
175 .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
176
177static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
178 SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
179 TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
180 SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
181 SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
182 TLV320AIC23_RINVOL, 7, 1, 0),
183 SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
184 TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
185 SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
186 SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
187 SOC_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG,
188 6, 4, 0, sidetone_vol_tlv),
189 SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
190};
191
192/* add non dapm controls */
193static int tlv320aic23_add_controls(struct snd_soc_codec *codec)
194{
195
196 int err, i;
197
198 for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) {
199 err = snd_ctl_add(codec->card,
200 snd_soc_cnew(&tlv320aic23_snd_controls[i],
201 codec, NULL));
202 if (err < 0)
203 return err;
204 }
205
206 return 0;
207
208}
209
210/* PGA Mixer controls for Line and Mic switch */
211static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
212 SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
213 SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
214 SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
215};
216
217static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
218 SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
219 SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
220 SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
221 &tlv320aic23_rec_src_mux_controls),
222 SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
223 &tlv320aic23_output_mixer_controls[0],
224 ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
225 SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
226 SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
227
228 SND_SOC_DAPM_OUTPUT("LHPOUT"),
229 SND_SOC_DAPM_OUTPUT("RHPOUT"),
230 SND_SOC_DAPM_OUTPUT("LOUT"),
231 SND_SOC_DAPM_OUTPUT("ROUT"),
232
233 SND_SOC_DAPM_INPUT("LLINEIN"),
234 SND_SOC_DAPM_INPUT("RLINEIN"),
235
236 SND_SOC_DAPM_INPUT("MICIN"),
237};
238
239static const struct snd_soc_dapm_route intercon[] = {
240 /* Output Mixer */
241 {"Output Mixer", "Line Bypass Switch", "Line Input"},
242 {"Output Mixer", "Playback Switch", "DAC"},
243 {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
244
245 /* Outputs */
246 {"RHPOUT", NULL, "Output Mixer"},
247 {"LHPOUT", NULL, "Output Mixer"},
248 {"LOUT", NULL, "Output Mixer"},
249 {"ROUT", NULL, "Output Mixer"},
250
251 /* Inputs */
252 {"Line Input", "NULL", "LLINEIN"},
253 {"Line Input", "NULL", "RLINEIN"},
254
255 {"Mic Input", "NULL", "MICIN"},
256
257 /* input mux */
258 {"Capture Source", "Line", "Line Input"},
259 {"Capture Source", "Mic", "Mic Input"},
260 {"ADC", NULL, "Capture Source"},
261
262};
263
264/* tlv320aic23 related */
265static const struct tlv320aic23_srate_reg_info srate_reg_info[] = {
266 {4000, 0x06, 1}, /* 4000 */
267 {8000, 0x06, 0}, /* 8000 */
268 {16000, 0x0C, 1}, /* 16000 */
269 {22050, 0x11, 1}, /* 22050 */
270 {24000, 0x00, 1}, /* 24000 */
271 {32000, 0x0C, 0}, /* 32000 */
272 {44100, 0x11, 0}, /* 44100 */
273 {48000, 0x00, 0}, /* 48000 */
274 {88200, 0x1F, 0}, /* 88200 */
275 {96000, 0x0E, 0}, /* 96000 */
276};
277
278static int tlv320aic23_add_widgets(struct snd_soc_codec *codec)
279{
280 snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
281 ARRAY_SIZE(tlv320aic23_dapm_widgets));
282
283 /* set up audio path interconnects */
284 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
285
286 snd_soc_dapm_new_widgets(codec);
287 return 0;
288}
289
290static int tlv320aic23_hw_params(struct snd_pcm_substream *substream,
291 struct snd_pcm_hw_params *params)
292{
293 struct snd_soc_pcm_runtime *rtd = substream->private_data;
294 struct snd_soc_device *socdev = rtd->socdev;
295 struct snd_soc_codec *codec = socdev->codec;
296 u16 iface_reg, data;
297 u8 count = 0;
298
299 iface_reg =
300 tlv320aic23_read_reg_cache(codec,
301 TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
302
303 /* Search for the right sample rate */
304 /* Verify what happens if the rate is not supported
305 * now it goes to 96Khz */
306 while ((srate_reg_info[count].sample_rate != params_rate(params)) &&
307 (count < ARRAY_SIZE(srate_reg_info))) {
308 count++;
309 }
310
311 data = (srate_reg_info[count].divider << TLV320AIC23_CLKIN_SHIFT) |
312 (srate_reg_info[count]. control << TLV320AIC23_BOSR_SHIFT) |
313 TLV320AIC23_USB_CLK_ON;
314
315 tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
316
317 switch (params_format(params)) {
318 case SNDRV_PCM_FORMAT_S16_LE:
319 break;
320 case SNDRV_PCM_FORMAT_S20_3LE:
321 iface_reg |= (0x01 << 2);
322 break;
323 case SNDRV_PCM_FORMAT_S24_LE:
324 iface_reg |= (0x02 << 2);
325 break;
326 case SNDRV_PCM_FORMAT_S32_LE:
327 iface_reg |= (0x03 << 2);
328 break;
329 }
330 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
331
332 return 0;
333}
334
335static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream)
336{
337 struct snd_soc_pcm_runtime *rtd = substream->private_data;
338 struct snd_soc_device *socdev = rtd->socdev;
339 struct snd_soc_codec *codec = socdev->codec;
340
341 /* set active */
342 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
343
344 return 0;
345}
346
347static void tlv320aic23_shutdown(struct snd_pcm_substream *substream)
348{
349 struct snd_soc_pcm_runtime *rtd = substream->private_data;
350 struct snd_soc_device *socdev = rtd->socdev;
351 struct snd_soc_codec *codec = socdev->codec;
352
353 /* deactivate */
354 if (!codec->active) {
355 udelay(50);
356 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
357 }
358}
359
360static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
361{
362 struct snd_soc_codec *codec = dai->codec;
363 u16 reg;
364
365 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
366 if (mute)
367 reg |= TLV320AIC23_DACM_MUTE;
368
369 else
370 reg &= ~TLV320AIC23_DACM_MUTE;
371
372 tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
373
374 return 0;
375}
376
377static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
378 unsigned int fmt)
379{
380 struct snd_soc_codec *codec = codec_dai->codec;
381 u16 iface_reg;
382
383 iface_reg =
384 tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
385
386 /* set master/slave audio interface */
387 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
388 case SND_SOC_DAIFMT_CBM_CFM:
389 iface_reg |= TLV320AIC23_MS_MASTER;
390 break;
391 case SND_SOC_DAIFMT_CBS_CFS:
392 break;
393 default:
394 return -EINVAL;
395
396 }
397
398 /* interface format */
399 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
400 case SND_SOC_DAIFMT_I2S:
401 iface_reg |= TLV320AIC23_FOR_I2S;
402 break;
403 case SND_SOC_DAIFMT_DSP_A:
404 iface_reg |= TLV320AIC23_FOR_DSP;
405 break;
406 case SND_SOC_DAIFMT_RIGHT_J:
407 break;
408 case SND_SOC_DAIFMT_LEFT_J:
409 iface_reg |= TLV320AIC23_FOR_LJUST;
410 break;
411 default:
412 return -EINVAL;
413
414 }
415
416 tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
417
418 return 0;
419}
420
421static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
422 int clk_id, unsigned int freq, int dir)
423{
424 struct snd_soc_codec *codec = codec_dai->codec;
425
426 switch (freq) {
427 case 12000000:
428 return 0;
429 }
430 return -EINVAL;
431}
432
433static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
434 enum snd_soc_bias_level level)
435{
436 u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
437
438 switch (level) {
439 case SND_SOC_BIAS_ON:
440 /* vref/mid, osc on, dac unmute */
441 tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
442 break;
443 case SND_SOC_BIAS_PREPARE:
444 break;
445 case SND_SOC_BIAS_STANDBY:
446 /* everything off except vref/vmid, */
447 tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040);
448 break;
449 case SND_SOC_BIAS_OFF:
450 /* everything off, dac mute, inactive */
451 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
452 tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
453 break;
454 }
455 codec->bias_level = level;
456 return 0;
457}
458
459#define AIC23_RATES SNDRV_PCM_RATE_8000_96000
460#define AIC23_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
461 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
462
463struct snd_soc_dai tlv320aic23_dai = {
464 .name = "tlv320aic23",
465 .playback = {
466 .stream_name = "Playback",
467 .channels_min = 2,
468 .channels_max = 2,
469 .rates = AIC23_RATES,
470 .formats = AIC23_FORMATS,},
471 .capture = {
472 .stream_name = "Capture",
473 .channels_min = 2,
474 .channels_max = 2,
475 .rates = AIC23_RATES,
476 .formats = AIC23_FORMATS,},
477 .ops = {
478 .prepare = tlv320aic23_pcm_prepare,
479 .hw_params = tlv320aic23_hw_params,
480 .shutdown = tlv320aic23_shutdown,
481 },
482 .dai_ops = {
483 .digital_mute = tlv320aic23_mute,
484 .set_fmt = tlv320aic23_set_dai_fmt,
485 .set_sysclk = tlv320aic23_set_dai_sysclk,
486 }
487};
488EXPORT_SYMBOL_GPL(tlv320aic23_dai);
489
490static int tlv320aic23_suspend(struct platform_device *pdev,
491 pm_message_t state)
492{
493 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
494 struct snd_soc_codec *codec = socdev->codec;
495
496 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
497 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
498
499 return 0;
500}
501
502static int tlv320aic23_resume(struct platform_device *pdev)
503{
504 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
505 struct snd_soc_codec *codec = socdev->codec;
506 int i;
507 u16 reg;
508
509 /* Sync reg_cache with the hardware */
510 for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) {
511 u16 val = tlv320aic23_read_reg_cache(codec, reg);
512 tlv320aic23_write(codec, reg, val);
513 }
514
515 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
516 tlv320aic23_set_bias_level(codec, codec->suspend_bias_level);
517
518 return 0;
519}
520
521/*
522 * initialise the AIC23 driver
523 * register the mixer and dsp interfaces with the kernel
524 */
525static int tlv320aic23_init(struct snd_soc_device *socdev)
526{
527 struct snd_soc_codec *codec = socdev->codec;
528 int ret = 0;
529 u16 reg;
530
531 codec->name = "tlv320aic23";
532 codec->owner = THIS_MODULE;
533 codec->read = tlv320aic23_read_reg_cache;
534 codec->write = tlv320aic23_write;
535 codec->set_bias_level = tlv320aic23_set_bias_level;
536 codec->dai = &tlv320aic23_dai;
537 codec->num_dai = 1;
538 codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg);
539 codec->reg_cache =
540 kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL);
541 if (codec->reg_cache == NULL)
542 return -ENOMEM;
543
544 /* Reset codec */
545 tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
546
547 /* register pcms */
548 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
549 if (ret < 0) {
550 printk(KERN_ERR "tlv320aic23: failed to create pcms\n");
551 goto pcm_err;
552 }
553
554 /* power on device */
555 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
556
557 tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
558
559 /* Unmute input */
560 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
561 tlv320aic23_write(codec, TLV320AIC23_LINVOL,
562 (reg & (~TLV320AIC23_LIM_MUTED)) |
563 (TLV320AIC23_LRS_ENABLED));
564
565 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
566 tlv320aic23_write(codec, TLV320AIC23_RINVOL,
567 (reg & (~TLV320AIC23_LIM_MUTED)) |
568 TLV320AIC23_LRS_ENABLED);
569
570 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
571 tlv320aic23_write(codec, TLV320AIC23_ANLG,
572 (reg) & (~TLV320AIC23_BYPASS_ON) &
573 (~TLV320AIC23_MICM_MUTED));
574
575 /* Default output volume */
576 tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
577 TLV320AIC23_DEFAULT_OUT_VOL &
578 TLV320AIC23_OUT_VOL_MASK);
579 tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
580 TLV320AIC23_DEFAULT_OUT_VOL &
581 TLV320AIC23_OUT_VOL_MASK);
582
583 tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
584
585 tlv320aic23_add_controls(codec);
586 tlv320aic23_add_widgets(codec);
587 ret = snd_soc_register_card(socdev);
588 if (ret < 0) {
589 printk(KERN_ERR "tlv320aic23: failed to register card\n");
590 goto card_err;
591 }
592
593 return ret;
594
595card_err:
596 snd_soc_free_pcms(socdev);
597 snd_soc_dapm_free(socdev);
598pcm_err:
599 kfree(codec->reg_cache);
600 return ret;
601}
602static struct snd_soc_device *tlv320aic23_socdev;
603
604#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
605/*
606 * If the i2c layer weren't so broken, we could pass this kind of data
607 * around
608 */
609static int tlv320aic23_codec_probe(struct i2c_client *i2c,
610 const struct i2c_device_id *i2c_id)
611{
612 struct snd_soc_device *socdev = tlv320aic23_socdev;
613 struct snd_soc_codec *codec = socdev->codec;
614 int ret;
615
616 if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
617 return -EINVAL;
618
619 i2c_set_clientdata(i2c, codec);
620 codec->control_data = i2c;
621
622 ret = tlv320aic23_init(socdev);
623 if (ret < 0) {
624 printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n");
625 goto err;
626 }
627 return ret;
628
629err:
630 kfree(codec);
631 kfree(i2c);
632 return ret;
633}
634static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
635{
636 put_device(&i2c->dev);
637 return 0;
638}
639
640static const struct i2c_device_id tlv320aic23_id[] = {
641 {"tlv320aic23", 0},
642 {}
643};
644
645MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
646
647static struct i2c_driver tlv320aic23_i2c_driver = {
648 .driver = {
649 .name = "tlv320aic23",
650 },
651 .probe = tlv320aic23_codec_probe,
652 .remove = __exit_p(tlv320aic23_i2c_remove),
653 .id_table = tlv320aic23_id,
654};
655
656#endif
657
658static int tlv320aic23_probe(struct platform_device *pdev)
659{
660 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
661 struct snd_soc_codec *codec;
662 int ret = 0;
663
664 printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
665
666 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
667 if (codec == NULL)
668 return -ENOMEM;
669
670 socdev->codec = codec;
671 mutex_init(&codec->mutex);
672 INIT_LIST_HEAD(&codec->dapm_widgets);
673 INIT_LIST_HEAD(&codec->dapm_paths);
674
675 tlv320aic23_socdev = socdev;
676#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
677 codec->hw_write = (hw_write_t) i2c_smbus_write_byte_data;
678 codec->hw_read = NULL;
679 ret = i2c_add_driver(&tlv320aic23_i2c_driver);
680 if (ret != 0)
681 printk(KERN_ERR "can't add i2c driver");
682#endif
683 return ret;
684}
685
686static int tlv320aic23_remove(struct platform_device *pdev)
687{
688 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
689 struct snd_soc_codec *codec = socdev->codec;
690
691 if (codec->control_data)
692 tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
693
694 snd_soc_free_pcms(socdev);
695 snd_soc_dapm_free(socdev);
696#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
697 i2c_del_driver(&tlv320aic23_i2c_driver);
698#endif
699 kfree(codec->reg_cache);
700 kfree(codec);
701
702 return 0;
703}
704struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = {
705 .probe = tlv320aic23_probe,
706 .remove = tlv320aic23_remove,
707 .suspend = tlv320aic23_suspend,
708 .resume = tlv320aic23_resume,
709};
710EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23);
711
712MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
713MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
714MODULE_LICENSE("GPL");