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[ALSA] ASoC: Remove in-code changelogs
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / soc / s3c24xx / neo1973_wm8753.c
CommitLineData
74930bb6
GG		 1/*
2 * neo1973_wm8753.c -- SoC audio for Neo1973
3 *
4 * Copyright 2007 Wolfson Microelectronics PLC.
5 * Author: Graeme Gregory
6 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
74930bb6
GG		 13 */
14
15#include <linux/module.h>
16#include <linux/moduleparam.h>
17#include <linux/timer.h>
18#include <linux/interrupt.h>
19#include <linux/platform_device.h>
20#include <linux/i2c.h>
74930bb6
GG		 21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/soc.h>
24#include <sound/soc-dapm.h>
25
26#include <asm/mach-types.h>
27#include <asm/hardware/scoop.h>
74930bb6
GG		 28#include <asm/arch/regs-clock.h>
29#include <asm/arch/regs-gpio.h>
30#include <asm/hardware.h>
31#include <asm/arch/audio.h>
8ba02ace 32#include <linux/io.h>
74930bb6 33#include <asm/arch/spi-gpio.h>
aa9673cf
HW		 34
35#include <asm/plat-s3c24xx/regs-iis.h>
36
74930bb6
GG		 37#include "../codecs/wm8753.h"
38#include "lm4857.h"
39#include "s3c24xx-pcm.h"
40#include "s3c24xx-i2s.h"
41
1894c59f
TN		 42/* Debugging stuff */
43#define S3C24XX_SOC_NEO1973_WM8753_DEBUG 0
44#if S3C24XX_SOC_NEO1973_WM8753_DEBUG
45#define DBG(x...) printk(KERN_DEBUG "s3c24xx-soc-neo1973-wm8753: " x)
46#else
47#define DBG(x...)
48#endif
49
74930bb6
GG		 50/* define the scenarios */
51#define NEO_AUDIO_OFF 0
52#define NEO_GSM_CALL_AUDIO_HANDSET 1
53#define NEO_GSM_CALL_AUDIO_HEADSET 2
54#define NEO_GSM_CALL_AUDIO_BLUETOOTH 3
55#define NEO_STEREO_TO_SPEAKERS 4
56#define NEO_STEREO_TO_HEADPHONES 5
57#define NEO_CAPTURE_HANDSET 6
58#define NEO_CAPTURE_HEADSET 7
59#define NEO_CAPTURE_BLUETOOTH 8
60
61static struct snd_soc_machine neo1973;
62static struct i2c_client *i2c;
63
64static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
65 struct snd_pcm_hw_params *params)
66{
67 struct snd_soc_pcm_runtime *rtd = substream->private_data;
68 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
69 struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
70 unsigned int pll_out = 0, bclk = 0;
71 int ret = 0;
72 unsigned long iis_clkrate;
73
1894c59f
TN		 74 DBG("Entered %s\n", __func__);
75
74930bb6
GG		 76 iis_clkrate = s3c24xx_i2s_get_clockrate();
77
78 switch (params_rate(params)) {
79 case 8000:
80 case 16000:
81 pll_out = 12288000;
82 break;
83 case 48000:
84 bclk = WM8753_BCLK_DIV_4;
85 pll_out = 12288000;
86 break;
87 case 96000:
88 bclk = WM8753_BCLK_DIV_2;
89 pll_out = 12288000;
90 break;
91 case 11025:
92 bclk = WM8753_BCLK_DIV_16;
93 pll_out = 11289600;
94 break;
95 case 22050:
96 bclk = WM8753_BCLK_DIV_8;
97 pll_out = 11289600;
98 break;
99 case 44100:
100 bclk = WM8753_BCLK_DIV_4;
101 pll_out = 11289600;
102 break;
103 case 88200:
104 bclk = WM8753_BCLK_DIV_2;
105 pll_out = 11289600;
106 break;
107 }
108
109 /* set codec DAI configuration */
110 ret = codec_dai->dai_ops.set_fmt(codec_dai,
111 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
112 SND_SOC_DAIFMT_CBM_CFM);
113 if (ret < 0)
114 return ret;
115
116 /* set cpu DAI configuration */
117 ret = cpu_dai->dai_ops.set_fmt(cpu_dai,
118 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
119 SND_SOC_DAIFMT_CBM_CFM);
120 if (ret < 0)
121 return ret;
122
123 /* set the codec system clock for DAC and ADC */
124 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_MCLK, pll_out,
125 SND_SOC_CLOCK_IN);
126 if (ret < 0)
127 return ret;
128
129 /* set MCLK division for sample rate */
130 ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
8ba02ace 131 S3C2410_IISMOD_32FS);
74930bb6
GG		 132 if (ret < 0)
133 return ret;
134
135 /* set codec BCLK division for sample rate */
136 ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
137 if (ret < 0)
138 return ret;
139
140 /* set prescaler division for sample rate */
141 ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
8ba02ace 142 S3C24XX_PRESCALE(4, 4));
74930bb6
GG		 143 if (ret < 0)
144 return ret;
145
146 /* codec PLL input is PCLK/4 */
147 ret = codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1,
148 iis_clkrate / 4, pll_out);
149 if (ret < 0)
150 return ret;
151
152 return 0;
153}
154
155static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
156{
157 struct snd_soc_pcm_runtime *rtd = substream->private_data;
158 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
159
1894c59f
TN		 160 DBG("Entered %s\n", __func__);
161
74930bb6
GG		 162 /* disable the PLL */
163 return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1, 0, 0);
164}
165
166/*
167 * Neo1973 WM8753 HiFi DAI opserations.
168 */
169static struct snd_soc_ops neo1973_hifi_ops = {
170 .hw_params = neo1973_hifi_hw_params,
171 .hw_free = neo1973_hifi_hw_free,
172};
173
174static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
175 struct snd_pcm_hw_params *params)
176{
177 struct snd_soc_pcm_runtime *rtd = substream->private_data;
178 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
179 unsigned int pcmdiv = 0;
180 int ret = 0;
181 unsigned long iis_clkrate;
182
1894c59f
TN		 183 DBG("Entered %s\n", __func__);
184
74930bb6
GG		 185 iis_clkrate = s3c24xx_i2s_get_clockrate();
186
187 if (params_rate(params) != 8000)
188 return -EINVAL;
189 if (params_channels(params) != 1)
190 return -EINVAL;
191
192 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
193
194 /* todo: gg check mode (DSP_B) against CSR datasheet */
195 /* set codec DAI configuration */
196 ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
197 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
198 if (ret < 0)
199 return ret;
200
201 /* set the codec system clock for DAC and ADC */
202 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
203 SND_SOC_CLOCK_IN);
204 if (ret < 0)
205 return ret;
206
207 /* set codec PCM division for sample rate */
208 ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
209 if (ret < 0)
210 return ret;
211
212 /* configue and enable PLL for 12.288MHz output */
213 ret = codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2,
214 iis_clkrate / 4, 12288000);
215 if (ret < 0)
216 return ret;
217
218 return 0;
219}
220
221static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
222{
223 struct snd_soc_pcm_runtime *rtd = substream->private_data;
224 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
225
1894c59f
TN		 226 DBG("Entered %s\n", __func__);
227
74930bb6
GG		 228 /* disable the PLL */
229 return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2, 0, 0);
230}
231
232static struct snd_soc_ops neo1973_voice_ops = {
233 .hw_params = neo1973_voice_hw_params,
234 .hw_free = neo1973_voice_hw_free,
235};
236
8ba02ace 237static int neo1973_scenario;
74930bb6
GG		 238
239static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
240 struct snd_ctl_elem_value *ucontrol)
241{
242 ucontrol->value.integer.value[0] = neo1973_scenario;
243 return 0;
244}
245
246static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
247{
1894c59f
TN		 248 DBG("Entered %s\n", __func__);
249
8ba02ace 250 switch (neo1973_scenario) {
74930bb6
GG		 251 case NEO_AUDIO_OFF:
252 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
253 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
254 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
255 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
256 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
257 break;
258 case NEO_GSM_CALL_AUDIO_HANDSET:
259 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
260 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
261 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
262 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
263 snd_soc_dapm_set_endpoint(codec, "Call Mic", 1);
264 break;
265 case NEO_GSM_CALL_AUDIO_HEADSET:
266 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
267 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
268 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
269 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 1);
270 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
271 break;
272 case NEO_GSM_CALL_AUDIO_BLUETOOTH:
273 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
274 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
275 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
276 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
277 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
278 break;
279 case NEO_STEREO_TO_SPEAKERS:
280 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
281 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
282 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
283 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
284 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
285 break;
286 case NEO_STEREO_TO_HEADPHONES:
287 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
288 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
289 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
290 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
291 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
292 break;
293 case NEO_CAPTURE_HANDSET:
294 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
295 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
296 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
297 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
298 snd_soc_dapm_set_endpoint(codec, "Call Mic", 1);
299 break;
300 case NEO_CAPTURE_HEADSET:
301 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
302 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
303 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
304 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 1);
305 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
306 break;
307 case NEO_CAPTURE_BLUETOOTH:
308 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
309 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
310 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
311 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
312 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
313 break;
314 default:
315 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
316 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
317 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
318 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
319 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
320 }
321
322 snd_soc_dapm_sync_endpoints(codec);
323
324 return 0;
325}
326
327static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
328 struct snd_ctl_elem_value *ucontrol)
329{
330 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
331
1894c59f
TN		 332 DBG("Entered %s\n", __func__);
333
74930bb6
GG		 334 if (neo1973_scenario == ucontrol->value.integer.value[0])
335 return 0;
336
337 neo1973_scenario = ucontrol->value.integer.value[0];
338 set_scenario_endpoints(codec, neo1973_scenario);
339 return 1;
340}
341
342static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
343
344static void lm4857_write_regs(void)
345{
1894c59f
TN		 346 DBG("Entered %s\n", __func__);
347
74930bb6
GG		 348 if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
349 printk(KERN_ERR "lm4857: i2c write failed\n");
350}
351
352static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
353 struct snd_ctl_elem_value *ucontrol)
354{
8ba02ace 355 int reg = kcontrol->private_value & 0xFF;
74930bb6
GG		 356 int shift = (kcontrol->private_value >> 8) & 0x0F;
357 int mask = (kcontrol->private_value >> 16) & 0xFF;
358
1894c59f
TN		 359 DBG("Entered %s\n", __func__);
360
74930bb6
GG		 361 ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
362 return 0;
363}
364
365static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
366 struct snd_ctl_elem_value *ucontrol)
367{
368 int reg = kcontrol->private_value & 0xFF;
369 int shift = (kcontrol->private_value >> 8) & 0x0F;
370 int mask = (kcontrol->private_value >> 16) & 0xFF;
371
8ba02ace 372 if (((lm4857_regs[reg] >> shift) & mask) ==
74930bb6
GG		 373 ucontrol->value.integer.value[0])
374 return 0;
375
8ba02ace 376 lm4857_regs[reg] &= ~(mask << shift);
74930bb6
GG		 377 lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
378 lm4857_write_regs();
379 return 1;
380}
381
382static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
383 struct snd_ctl_elem_value *ucontrol)
384{
385 u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
386
1894c59f
TN		 387 DBG("Entered %s\n", __func__);
388
74930bb6
GG		 389 if (value)
390 value -= 5;
391
392 ucontrol->value.integer.value[0] = value;
393 return 0;
394}
395
396static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
397 struct snd_ctl_elem_value *ucontrol)
398{
399 u8 value = ucontrol->value.integer.value[0];
400
1894c59f
TN		 401 DBG("Entered %s\n", __func__);
402
74930bb6
GG		 403 if (value)
404 value += 5;
405
406 if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
407 return 0;
408
409 lm4857_regs[LM4857_CTRL] &= 0xF0;
410 lm4857_regs[LM4857_CTRL] |= value;
411 lm4857_write_regs();
412 return 1;
413}
414
415static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
416 SND_SOC_DAPM_LINE("Audio Out", NULL),
417 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
418 SND_SOC_DAPM_LINE("GSM Line In", NULL),
419 SND_SOC_DAPM_MIC("Headset Mic", NULL),
420 SND_SOC_DAPM_MIC("Call Mic", NULL),
421};
422
423
8f3112d7 424static const struct snd_soc_dapm_route dapm_routes[] = {
74930bb6
GG		 425
426 /* Connections to the lm4857 amp */
427 {"Audio Out", NULL, "LOUT1"},
428 {"Audio Out", NULL, "ROUT1"},
429
430 /* Connections to the GSM Module */
431 {"GSM Line Out", NULL, "MONO1"},
432 {"GSM Line Out", NULL, "MONO2"},
433 {"RXP", NULL, "GSM Line In"},
434 {"RXN", NULL, "GSM Line In"},
435
436 /* Connections to Headset */
437 {"MIC1", NULL, "Mic Bias"},
438 {"Mic Bias", NULL, "Headset Mic"},
439
440 /* Call Mic */
441 {"MIC2", NULL, "Mic Bias"},
442 {"MIC2N", NULL, "Mic Bias"},
443 {"Mic Bias", NULL, "Call Mic"},
444
445 /* Connect the ALC pins */
446 {"ACIN", NULL, "ACOP"},
74930bb6
GG		 447};
448
449static const char *lm4857_mode[] = {
450 "Off",
451 "Call Speaker",
452 "Stereo Speakers",
453 "Stereo Speakers + Headphones",
454 "Headphones"
455};
456
457static const struct soc_enum lm4857_mode_enum[] = {
458 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
459};
460
461static const char *neo_scenarios[] = {
462 "Off",
463 "GSM Handset",
464 "GSM Headset",
465 "GSM Bluetooth",
466 "Speakers",
467 "Headphones",
468 "Capture Handset",
469 "Capture Headset",
470 "Capture Bluetooth"
471};
472
473static const struct soc_enum neo_scenario_enum[] = {
8ba02ace 474 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
74930bb6
GG		 475};
476
477static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
478 SOC_SINGLE_EXT("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
479 lm4857_get_reg, lm4857_set_reg),
480 SOC_SINGLE_EXT("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
481 lm4857_get_reg, lm4857_set_reg),
482 SOC_SINGLE_EXT("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
483 lm4857_get_reg, lm4857_set_reg),
484 SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
485 lm4857_get_mode, lm4857_set_mode),
486 SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
487 neo1973_get_scenario, neo1973_set_scenario),
488 SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
489 lm4857_get_reg, lm4857_set_reg),
490 SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
491 lm4857_get_reg, lm4857_set_reg),
492 SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
493 lm4857_get_reg, lm4857_set_reg),
494 SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
495 lm4857_get_reg, lm4857_set_reg),
496};
497
498/*
499 * This is an example machine initialisation for a wm8753 connected to a
500 * neo1973 II. It is missing logic to detect hp/mic insertions and logic
501 * to re-route the audio in such an event.
502 */
503static int neo1973_wm8753_init(struct snd_soc_codec *codec)
504{
505 int i, err;
506
1894c59f
TN		 507 DBG("Entered %s\n", __func__);
508
74930bb6
GG		 509 /* set up NC codec pins */
510 snd_soc_dapm_set_endpoint(codec, "LOUT2", 0);
511 snd_soc_dapm_set_endpoint(codec, "ROUT2", 0);
512 snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
513 snd_soc_dapm_set_endpoint(codec, "OUT4", 0);
514 snd_soc_dapm_set_endpoint(codec, "LINE1", 0);
515 snd_soc_dapm_set_endpoint(codec, "LINE2", 0);
516
517
518 /* set endpoints to default mode */
519 set_scenario_endpoints(codec, NEO_AUDIO_OFF);
520
521 /* Add neo1973 specific widgets */
8f3112d7
MB		 522 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
523 ARRAY_SIZE(wm8753_dapm_widgets));
74930bb6
GG		 524
525 /* add neo1973 specific controls */
526 for (i = 0; i < ARRAY_SIZE(wm8753_neo1973_controls); i++) {
527 err = snd_ctl_add(codec->card,
528 snd_soc_cnew(&wm8753_neo1973_controls[i],
529 codec, NULL));
530 if (err < 0)
531 return err;
532 }
533
8f3112d7
MB		 534 /* set up neo1973 specific audio routes */
535 err = snd_soc_dapm_add_routes(codec, dapm_routes,
536 ARRAY_SIZE(dapm_routes));
74930bb6
GG		 537
538 snd_soc_dapm_sync_endpoints(codec);
539 return 0;
540}
541
542/*
543 * BT Codec DAI
544 */
8ba02ace
GG		 545static struct snd_soc_cpu_dai bt_dai = {
546 .name = "Bluetooth",
74930bb6
GG		 547 .id = 0,
548 .type = SND_SOC_DAI_PCM,
549 .playback = {
550 .channels_min = 1,
551 .channels_max = 1,
552 .rates = SNDRV_PCM_RATE_8000,
553 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
554 .capture = {
555 .channels_min = 1,
556 .channels_max = 1,
557 .rates = SNDRV_PCM_RATE_8000,
558 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
559};
560
561static struct snd_soc_dai_link neo1973_dai[] = {
562{ /* Hifi Playback - for similatious use with voice below */
563 .name = "WM8753",
564 .stream_name = "WM8753 HiFi",
565 .cpu_dai = &s3c24xx_i2s_dai,
566 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
567 .init = neo1973_wm8753_init,
568 .ops = &neo1973_hifi_ops,
569},
570{ /* Voice via BT */
571 .name = "Bluetooth",
572 .stream_name = "Voice",
573 .cpu_dai = &bt_dai,
574 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
575 .ops = &neo1973_voice_ops,
576},
577};
578
579static struct snd_soc_machine neo1973 = {
580 .name = "neo1973",
581 .dai_link = neo1973_dai,
582 .num_links = ARRAY_SIZE(neo1973_dai),
583};
584
585static struct wm8753_setup_data neo1973_wm8753_setup = {
586 .i2c_address = 0x1a,
587};
588
589static struct snd_soc_device neo1973_snd_devdata = {
590 .machine = &neo1973,
591 .platform = &s3c24xx_soc_platform,
592 .codec_dev = &soc_codec_dev_wm8753,
593 .codec_data = &neo1973_wm8753_setup,
594};
595
596static struct i2c_client client_template;
597
2cdddeb8 598static const unsigned short normal_i2c[] = { 0x7C, I2C_CLIENT_END };
74930bb6
GG		 599
600/* Magic definition of all other variables and things */
601I2C_CLIENT_INSMOD;
602
603static int lm4857_amp_probe(struct i2c_adapter *adap, int addr, int kind)
604{
605 int ret;
606
1894c59f
TN		 607 DBG("Entered %s\n", __func__);
608
74930bb6
GG		 609 client_template.adapter = adap;
610 client_template.addr = addr;
611
612 i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
613 if (i2c == NULL)
614 return -ENOMEM;
615
616 ret = i2c_attach_client(i2c);
617 if (ret < 0) {
618 printk(KERN_ERR "LM4857 failed to attach at addr %x\n", addr);
619 goto exit_err;
620 }
621
622 lm4857_write_regs();
623 return ret;
624
625exit_err:
626 kfree(i2c);
627 return ret;
628}
629
630static int lm4857_i2c_detach(struct i2c_client *client)
631{
1894c59f
TN		 632 DBG("Entered %s\n", __func__);
633
74930bb6
GG		 634 i2c_detach_client(client);
635 kfree(client);
636 return 0;
637}
638
639static int lm4857_i2c_attach(struct i2c_adapter *adap)
640{
1894c59f
TN		 641 DBG("Entered %s\n", __func__);
642
74930bb6
GG		 643 return i2c_probe(adap, &addr_data, lm4857_amp_probe);
644}
645
fd403dc8
GG		 646static u8 lm4857_state;
647
648static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
649{
1894c59f
TN		 650 DBG("Entered %s\n", __func__);
651
fd403dc8
GG		 652 dev_dbg(&dev->dev, "lm4857_suspend\n");
653 lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
654 if (lm4857_state) {
655 lm4857_regs[LM4857_CTRL] &= 0xf0;
656 lm4857_write_regs();
657 }
658 return 0;
659}
660
661static int lm4857_resume(struct i2c_client *dev)
662{
1894c59f
TN		 663 DBG("Entered %s\n", __func__);
664
fd403dc8
GG		 665 if (lm4857_state) {
666 lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
667 lm4857_write_regs();
668 }
669 return 0;
670}
671
672static void lm4857_shutdown(struct i2c_client *dev)
673{
1894c59f
TN		 674 DBG("Entered %s\n", __func__);
675
fd403dc8
GG		 676 dev_dbg(&dev->dev, "lm4857_shutdown\n");
677 lm4857_regs[LM4857_CTRL] &= 0xf0;
678 lm4857_write_regs();
679}
680
74930bb6
GG		 681/* corgi i2c codec control layer */
682static struct i2c_driver lm4857_i2c_driver = {
683 .driver = {
684 .name = "LM4857 I2C Amp",
685 .owner = THIS_MODULE,
686 },
687 .id = I2C_DRIVERID_LM4857,
fd403dc8
GG		 688 .suspend = lm4857_suspend,
689 .resume = lm4857_resume,
690 .shutdown = lm4857_shutdown,
74930bb6
GG		 691 .attach_adapter = lm4857_i2c_attach,
692 .detach_client = lm4857_i2c_detach,
693 .command = NULL,
694};
695
696static struct i2c_client client_template = {
697 .name = "LM4857",
698 .driver = &lm4857_i2c_driver,
699};
700
701static struct platform_device *neo1973_snd_device;
702
703static int __init neo1973_init(void)
704{
705 int ret;
706
1894c59f
TN		 707 DBG("Entered %s\n", __func__);
708
74930bb6
GG		 709 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
710 if (!neo1973_snd_device)
711 return -ENOMEM;
712
713 platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
714 neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
715 ret = platform_device_add(neo1973_snd_device);
716
717 if (ret)
718 platform_device_put(neo1973_snd_device);
719
720 ret = i2c_add_driver(&lm4857_i2c_driver);
721 if (ret != 0)
722 printk(KERN_ERR "can't add i2c driver");
723
724 return ret;
725}
726
727static void __exit neo1973_exit(void)
728{
1894c59f
TN		 729 DBG("Entered %s\n", __func__);
730
6b9a9b32 731 i2c_del_driver(&lm4857_i2c_driver);
74930bb6
GG		 732 platform_device_unregister(neo1973_snd_device);
733}
734
735module_init(neo1973_init);
736module_exit(neo1973_exit);
737
738/* Module information */
443590e6 739MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
74930bb6
GG		 740MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
741MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)