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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>
21#include <sound/core.h>
22#include <sound/pcm.h>
23#include <sound/soc.h>
24#include <sound/soc-dapm.h>
25#include <sound/tlv.h>
26
27#include <asm/mach-types.h>
28#include <asm/hardware/scoop.h>
29#include <mach/regs-clock.h>
30#include <mach/regs-gpio.h>
31#include <mach/hardware.h>
32#include <mach/audio.h>
33#include <linux/io.h>
34#include <mach/spi-gpio.h>
35
36#include <asm/plat-s3c24xx/regs-iis.h>
37
38#include "../codecs/wm8753.h"
39#include "lm4857.h"
40#include "s3c24xx-pcm.h"
41#include "s3c24xx-i2s.h"
42
43
44#define S3C24XX_SOC_NEO1973_WM8753_DEBUG 0
45#if S3C24XX_SOC_NEO1973_WM8753_DEBUG
46#define DBG(x...) printk(KERN_DEBUG "s3c24xx-soc-neo1973-wm8753: " x)
47#else
48#define DBG(x...)
49#endif
50
51
52#define NEO_AUDIO_OFF 0
53#define NEO_GSM_CALL_AUDIO_HANDSET 1
54#define NEO_GSM_CALL_AUDIO_HEADSET 2
55#define NEO_GSM_CALL_AUDIO_BLUETOOTH 3
56#define NEO_STEREO_TO_SPEAKERS 4
57#define NEO_STEREO_TO_HEADPHONES 5
58#define NEO_CAPTURE_HANDSET 6
59#define NEO_CAPTURE_HEADSET 7
60#define NEO_CAPTURE_BLUETOOTH 8
61
62static struct snd_soc_machine neo1973;
63static struct i2c_client *i2c;
64
65static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
66 struct snd_pcm_hw_params *params)
67{
68 struct snd_soc_pcm_runtime *rtd = substream->private_data;
69 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
70 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
71 unsigned int pll_out = 0, bclk = 0;
72 int ret = 0;
73 unsigned long iis_clkrate;
74
75 DBG("Entered %s\n", __func__);
76
77 iis_clkrate = s3c24xx_i2s_get_clockrate();
78
79 switch (params_rate(params)) {
80 case 8000:
81 case 16000:
82 pll_out = 12288000;
83 break;
84 case 48000:
85 bclk = WM8753_BCLK_DIV_4;
86 pll_out = 12288000;
87 break;
88 case 96000:
89 bclk = WM8753_BCLK_DIV_2;
90 pll_out = 12288000;
91 break;
92 case 11025:
93 bclk = WM8753_BCLK_DIV_16;
94 pll_out = 11289600;
95 break;
96 case 22050:
97 bclk = WM8753_BCLK_DIV_8;
98 pll_out = 11289600;
99 break;
100 case 44100:
101 bclk = WM8753_BCLK_DIV_4;
102 pll_out = 11289600;
103 break;
104 case 88200:
105 bclk = WM8753_BCLK_DIV_2;
106 pll_out = 11289600;
107 break;
108 }
109
110
111 ret = snd_soc_dai_set_fmt(codec_dai,
112 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
113 SND_SOC_DAIFMT_CBM_CFM);
114 if (ret < 0)
115 return ret;
116
117
118 ret = snd_soc_dai_set_fmt(cpu_dai,
119 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
120 SND_SOC_DAIFMT_CBM_CFM);
121 if (ret < 0)
122 return ret;
123
124
125 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
126 SND_SOC_CLOCK_IN);
127 if (ret < 0)
128 return ret;
129
130
131 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
132 S3C2410_IISMOD_32FS);
133 if (ret < 0)
134 return ret;
135
136
137 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
138 if (ret < 0)
139 return ret;
140
141
142 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
143 S3C24XX_PRESCALE(4, 4));
144 if (ret < 0)
145 return ret;
146
147
148 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1,
149 iis_clkrate / 4, pll_out);
150 if (ret < 0)
151 return ret;
152
153 return 0;
154}
155
156static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
157{
158 struct snd_soc_pcm_runtime *rtd = substream->private_data;
159 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
160
161 DBG("Entered %s\n", __func__);
162
163
164 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0);
165}
166
167
168
169
170static struct snd_soc_ops neo1973_hifi_ops = {
171 .hw_params = neo1973_hifi_hw_params,
172 .hw_free = neo1973_hifi_hw_free,
173};
174
175static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
176 struct snd_pcm_hw_params *params)
177{
178 struct snd_soc_pcm_runtime *rtd = substream->private_data;
179 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
180 unsigned int pcmdiv = 0;
181 int ret = 0;
182 unsigned long iis_clkrate;
183
184 DBG("Entered %s\n", __func__);
185
186 iis_clkrate = s3c24xx_i2s_get_clockrate();
187
188 if (params_rate(params) != 8000)
189 return -EINVAL;
190 if (params_channels(params) != 1)
191 return -EINVAL;
192
193 pcmdiv = WM8753_PCM_DIV_6;
194
195
196
197 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
198 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
199 if (ret < 0)
200 return ret;
201
202
203 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
204 SND_SOC_CLOCK_IN);
205 if (ret < 0)
206 return ret;
207
208
209 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
210 if (ret < 0)
211 return ret;
212
213
214 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2,
215 iis_clkrate / 4, 12288000);
216 if (ret < 0)
217 return ret;
218
219 return 0;
220}
221
222static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
223{
224 struct snd_soc_pcm_runtime *rtd = substream->private_data;
225 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
226
227 DBG("Entered %s\n", __func__);
228
229
230 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0);
231}
232
233static struct snd_soc_ops neo1973_voice_ops = {
234 .hw_params = neo1973_voice_hw_params,
235 .hw_free = neo1973_voice_hw_free,
236};
237
238static int neo1973_scenario;
239
240static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
241 struct snd_ctl_elem_value *ucontrol)
242{
243 ucontrol->value.integer.value[0] = neo1973_scenario;
244 return 0;
245}
246
247static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
248{
249 DBG("Entered %s\n", __func__);
250
251 switch (neo1973_scenario) {
252 case NEO_AUDIO_OFF:
253 snd_soc_dapm_disable_pin(codec, "Audio Out");
254 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
255 snd_soc_dapm_disable_pin(codec, "GSM Line In");
256 snd_soc_dapm_disable_pin(codec, "Headset Mic");
257 snd_soc_dapm_disable_pin(codec, "Call Mic");
258 break;
259 case NEO_GSM_CALL_AUDIO_HANDSET:
260 snd_soc_dapm_enable_pin(codec, "Audio Out");
261 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
262 snd_soc_dapm_enable_pin(codec, "GSM Line In");
263 snd_soc_dapm_disable_pin(codec, "Headset Mic");
264 snd_soc_dapm_enable_pin(codec, "Call Mic");
265 break;
266 case NEO_GSM_CALL_AUDIO_HEADSET:
267 snd_soc_dapm_enable_pin(codec, "Audio Out");
268 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
269 snd_soc_dapm_enable_pin(codec, "GSM Line In");
270 snd_soc_dapm_enable_pin(codec, "Headset Mic");
271 snd_soc_dapm_disable_pin(codec, "Call Mic");
272 break;
273 case NEO_GSM_CALL_AUDIO_BLUETOOTH:
274 snd_soc_dapm_disable_pin(codec, "Audio Out");
275 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
276 snd_soc_dapm_enable_pin(codec, "GSM Line In");
277 snd_soc_dapm_disable_pin(codec, "Headset Mic");
278 snd_soc_dapm_disable_pin(codec, "Call Mic");
279 break;
280 case NEO_STEREO_TO_SPEAKERS:
281 snd_soc_dapm_enable_pin(codec, "Audio Out");
282 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
283 snd_soc_dapm_disable_pin(codec, "GSM Line In");
284 snd_soc_dapm_disable_pin(codec, "Headset Mic");
285 snd_soc_dapm_disable_pin(codec, "Call Mic");
286 break;
287 case NEO_STEREO_TO_HEADPHONES:
288 snd_soc_dapm_enable_pin(codec, "Audio Out");
289 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
290 snd_soc_dapm_disable_pin(codec, "GSM Line In");
291 snd_soc_dapm_disable_pin(codec, "Headset Mic");
292 snd_soc_dapm_disable_pin(codec, "Call Mic");
293 break;
294 case NEO_CAPTURE_HANDSET:
295 snd_soc_dapm_disable_pin(codec, "Audio Out");
296 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
297 snd_soc_dapm_disable_pin(codec, "GSM Line In");
298 snd_soc_dapm_disable_pin(codec, "Headset Mic");
299 snd_soc_dapm_enable_pin(codec, "Call Mic");
300 break;
301 case NEO_CAPTURE_HEADSET:
302 snd_soc_dapm_disable_pin(codec, "Audio Out");
303 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
304 snd_soc_dapm_disable_pin(codec, "GSM Line In");
305 snd_soc_dapm_enable_pin(codec, "Headset Mic");
306 snd_soc_dapm_disable_pin(codec, "Call Mic");
307 break;
308 case NEO_CAPTURE_BLUETOOTH:
309 snd_soc_dapm_disable_pin(codec, "Audio Out");
310 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
311 snd_soc_dapm_disable_pin(codec, "GSM Line In");
312 snd_soc_dapm_disable_pin(codec, "Headset Mic");
313 snd_soc_dapm_disable_pin(codec, "Call Mic");
314 break;
315 default:
316 snd_soc_dapm_disable_pin(codec, "Audio Out");
317 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
318 snd_soc_dapm_disable_pin(codec, "GSM Line In");
319 snd_soc_dapm_disable_pin(codec, "Headset Mic");
320 snd_soc_dapm_disable_pin(codec, "Call Mic");
321 }
322
323 snd_soc_dapm_sync(codec);
324
325 return 0;
326}
327
328static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
329 struct snd_ctl_elem_value *ucontrol)
330{
331 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
332
333 DBG("Entered %s\n", __func__);
334
335 if (neo1973_scenario == ucontrol->value.integer.value[0])
336 return 0;
337
338 neo1973_scenario = ucontrol->value.integer.value[0];
339 set_scenario_endpoints(codec, neo1973_scenario);
340 return 1;
341}
342
343static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
344
345static void lm4857_write_regs(void)
346{
347 DBG("Entered %s\n", __func__);
348
349 if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
350 printk(KERN_ERR "lm4857: i2c write failed\n");
351}
352
353static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
354 struct snd_ctl_elem_value *ucontrol)
355{
356 int reg = kcontrol->private_value & 0xFF;
357 int shift = (kcontrol->private_value >> 8) & 0x0F;
358 int mask = (kcontrol->private_value >> 16) & 0xFF;
359
360 DBG("Entered %s\n", __func__);
361
362 ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
363 return 0;
364}
365
366static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
367 struct snd_ctl_elem_value *ucontrol)
368{
369 int reg = kcontrol->private_value & 0xFF;
370 int shift = (kcontrol->private_value >> 8) & 0x0F;
371 int mask = (kcontrol->private_value >> 16) & 0xFF;
372
373 if (((lm4857_regs[reg] >> shift) & mask) ==
374 ucontrol->value.integer.value[0])
375 return 0;
376
377 lm4857_regs[reg] &= ~(mask << shift);
378 lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
379 lm4857_write_regs();
380 return 1;
381}
382
383static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
384 struct snd_ctl_elem_value *ucontrol)
385{
386 u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
387
388 DBG("Entered %s\n", __func__);
389
390 if (value)
391 value -= 5;
392
393 ucontrol->value.integer.value[0] = value;
394 return 0;
395}
396
397static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
398 struct snd_ctl_elem_value *ucontrol)
399{
400 u8 value = ucontrol->value.integer.value[0];
401
402 DBG("Entered %s\n", __func__);
403
404 if (value)
405 value += 5;
406
407 if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
408 return 0;
409
410 lm4857_regs[LM4857_CTRL] &= 0xF0;
411 lm4857_regs[LM4857_CTRL] |= value;
412 lm4857_write_regs();
413 return 1;
414}
415
416static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
417 SND_SOC_DAPM_LINE("Audio Out", NULL),
418 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
419 SND_SOC_DAPM_LINE("GSM Line In", NULL),
420 SND_SOC_DAPM_MIC("Headset Mic", NULL),
421 SND_SOC_DAPM_MIC("Call Mic", NULL),
422};
423
424
425static const struct snd_soc_dapm_route dapm_routes[] = {
426
427
428 {"Audio Out", NULL, "LOUT1"},
429 {"Audio Out", NULL, "ROUT1"},
430
431
432 {"GSM Line Out", NULL, "MONO1"},
433 {"GSM Line Out", NULL, "MONO2"},
434 {"RXP", NULL, "GSM Line In"},
435 {"RXN", NULL, "GSM Line In"},
436
437
438 {"MIC1", NULL, "Mic Bias"},
439 {"Mic Bias", NULL, "Headset Mic"},
440
441
442 {"MIC2", NULL, "Mic Bias"},
443 {"MIC2N", NULL, "Mic Bias"},
444 {"Mic Bias", NULL, "Call Mic"},
445
446
447 {"ACIN", NULL, "ACOP"},
448};
449
450static const char *lm4857_mode[] = {
451 "Off",
452 "Call Speaker",
453 "Stereo Speakers",
454 "Stereo Speakers + Headphones",
455 "Headphones"
456};
457
458static const struct soc_enum lm4857_mode_enum[] = {
459 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
460};
461
462static const char *neo_scenarios[] = {
463 "Off",
464 "GSM Handset",
465 "GSM Headset",
466 "GSM Bluetooth",
467 "Speakers",
468 "Headphones",
469 "Capture Handset",
470 "Capture Headset",
471 "Capture Bluetooth"
472};
473
474static const struct soc_enum neo_scenario_enum[] = {
475 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
476};
477
478static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
479static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
480
481static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
482 SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
483 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
484 SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
485 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
486 SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
487 lm4857_get_reg, lm4857_set_reg, mono_tlv),
488 SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
489 lm4857_get_mode, lm4857_set_mode),
490 SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
491 neo1973_get_scenario, neo1973_set_scenario),
492 SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
493 lm4857_get_reg, lm4857_set_reg),
494 SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
495 lm4857_get_reg, lm4857_set_reg),
496 SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
497 lm4857_get_reg, lm4857_set_reg),
498 SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
499 lm4857_get_reg, lm4857_set_reg),
500};
501
502
503
504
505
506
507static int neo1973_wm8753_init(struct snd_soc_codec *codec)
508{
509 int i, err;
510
511 DBG("Entered %s\n", __func__);
512
513
514 snd_soc_dapm_nc_pin(codec, "LOUT2");
515 snd_soc_dapm_nc_pin(codec, "ROUT2");
516 snd_soc_dapm_nc_pin(codec, "OUT3");
517 snd_soc_dapm_nc_pin(codec, "OUT4");
518 snd_soc_dapm_nc_pin(codec, "LINE1");
519 snd_soc_dapm_nc_pin(codec, "LINE2");
520
521
522 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
523 ARRAY_SIZE(wm8753_dapm_widgets));
524
525
526 set_scenario_endpoints(codec, NEO_AUDIO_OFF);
527
528
529 for (i = 0; i < ARRAY_SIZE(wm8753_neo1973_controls); i++) {
530 err = snd_ctl_add(codec->card,
531 snd_soc_cnew(&wm8753_neo1973_controls[i],
532 codec, NULL));
533 if (err < 0)
534 return err;
535 }
536
537
538 err = snd_soc_dapm_add_routes(codec, dapm_routes,
539 ARRAY_SIZE(dapm_routes));
540
541 snd_soc_dapm_sync(codec);
542 return 0;
543}
544
545
546
547
548static struct snd_soc_dai bt_dai = {
549 .name = "Bluetooth",
550 .id = 0,
551 .type = SND_SOC_DAI_PCM,
552 .playback = {
553 .channels_min = 1,
554 .channels_max = 1,
555 .rates = SNDRV_PCM_RATE_8000,
556 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
557 .capture = {
558 .channels_min = 1,
559 .channels_max = 1,
560 .rates = SNDRV_PCM_RATE_8000,
561 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
562};
563
564static struct snd_soc_dai_link neo1973_dai[] = {
565{
566 .name = "WM8753",
567 .stream_name = "WM8753 HiFi",
568 .cpu_dai = &s3c24xx_i2s_dai,
569 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
570 .init = neo1973_wm8753_init,
571 .ops = &neo1973_hifi_ops,
572},
573{
574 .name = "Bluetooth",
575 .stream_name = "Voice",
576 .cpu_dai = &bt_dai,
577 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
578 .ops = &neo1973_voice_ops,
579},
580};
581
582static struct snd_soc_machine neo1973 = {
583 .name = "neo1973",
584 .dai_link = neo1973_dai,
585 .num_links = ARRAY_SIZE(neo1973_dai),
586};
587
588static struct wm8753_setup_data neo1973_wm8753_setup = {
589 .i2c_bus = 0,
590 .i2c_address = 0x1a,
591};
592
593static struct snd_soc_device neo1973_snd_devdata = {
594 .machine = &neo1973,
595 .platform = &s3c24xx_soc_platform,
596 .codec_dev = &soc_codec_dev_wm8753,
597 .codec_data = &neo1973_wm8753_setup,
598};
599
600static int lm4857_i2c_probe(struct i2c_client *client,
601 const struct i2c_device_id *id)
602{
603 DBG("Entered %s\n", __func__);
604
605 i2c = client;
606
607 lm4857_write_regs();
608 return 0;
609}
610
611static int lm4857_i2c_remove(struct i2c_client *client)
612{
613 DBG("Entered %s\n", __func__);
614
615 i2c = NULL;
616
617 return 0;
618}
619
620static u8 lm4857_state;
621
622static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
623{
624 DBG("Entered %s\n", __func__);
625
626 dev_dbg(&dev->dev, "lm4857_suspend\n");
627 lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
628 if (lm4857_state) {
629 lm4857_regs[LM4857_CTRL] &= 0xf0;
630 lm4857_write_regs();
631 }
632 return 0;
633}
634
635static int lm4857_resume(struct i2c_client *dev)
636{
637 DBG("Entered %s\n", __func__);
638
639 if (lm4857_state) {
640 lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
641 lm4857_write_regs();
642 }
643 return 0;
644}
645
646static void lm4857_shutdown(struct i2c_client *dev)
647{
648 DBG("Entered %s\n", __func__);
649
650 dev_dbg(&dev->dev, "lm4857_shutdown\n");
651 lm4857_regs[LM4857_CTRL] &= 0xf0;
652 lm4857_write_regs();
653}
654
655static const struct i2c_device_id lm4857_i2c_id[] = {
656 { "neo1973_lm4857", 0 },
657 { }
658};
659
660static struct i2c_driver lm4857_i2c_driver = {
661 .driver = {
662 .name = "LM4857 I2C Amp",
663 .owner = THIS_MODULE,
664 },
665 .suspend = lm4857_suspend,
666 .resume = lm4857_resume,
667 .shutdown = lm4857_shutdown,
668 .probe = lm4857_i2c_probe,
669 .remove = lm4857_i2c_remove,
670 .id_table = lm4857_i2c_id,
671};
672
673static struct platform_device *neo1973_snd_device;
674
675static int __init neo1973_init(void)
676{
677 int ret;
678
679 DBG("Entered %s\n", __func__);
680
681 if (!machine_is_neo1973_gta01()) {
682 printk(KERN_INFO
683 "Only GTA01 hardware supported by ASoC driver\n");
684 return -ENODEV;
685 }
686
687 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
688 if (!neo1973_snd_device)
689 return -ENOMEM;
690
691 platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
692 neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
693 ret = platform_device_add(neo1973_snd_device);
694
695 if (ret) {
696 platform_device_put(neo1973_snd_device);
697 return ret;
698 }
699
700 ret = i2c_add_driver(&lm4857_i2c_driver);
701
702 if (ret != 0)
703 platform_device_unregister(neo1973_snd_device);
704
705 return ret;
706}
707
708static void __exit neo1973_exit(void)
709{
710 DBG("Entered %s\n", __func__);
711
712 i2c_del_driver(&lm4857_i2c_driver);
713 platform_device_unregister(neo1973_snd_device);
714}
715
716module_init(neo1973_init);
717module_exit(neo1973_exit);
718
719
720MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
721MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
722MODULE_LICENSE("GPL");
723
