1
2
3
4
5
6
7
8
9
10
11
12
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>
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 <plat/audio.h>
33#include <linux/io.h>
34#include <mach/spi-gpio.h>
35
36#include <plat/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 NEO_AUDIO_OFF 0
45#define NEO_GSM_CALL_AUDIO_HANDSET 1
46#define NEO_GSM_CALL_AUDIO_HEADSET 2
47#define NEO_GSM_CALL_AUDIO_BLUETOOTH 3
48#define NEO_STEREO_TO_SPEAKERS 4
49#define NEO_STEREO_TO_HEADPHONES 5
50#define NEO_CAPTURE_HANDSET 6
51#define NEO_CAPTURE_HEADSET 7
52#define NEO_CAPTURE_BLUETOOTH 8
53
54static struct snd_soc_card neo1973;
55static struct i2c_client *i2c;
56
57static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
58 struct snd_pcm_hw_params *params)
59{
60 struct snd_soc_pcm_runtime *rtd = substream->private_data;
61 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
62 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
63 unsigned int pll_out = 0, bclk = 0;
64 int ret = 0;
65 unsigned long iis_clkrate;
66
67 pr_debug("Entered %s\n", __func__);
68
69 iis_clkrate = s3c24xx_i2s_get_clockrate();
70
71 switch (params_rate(params)) {
72 case 8000:
73 case 16000:
74 pll_out = 12288000;
75 break;
76 case 48000:
77 bclk = WM8753_BCLK_DIV_4;
78 pll_out = 12288000;
79 break;
80 case 96000:
81 bclk = WM8753_BCLK_DIV_2;
82 pll_out = 12288000;
83 break;
84 case 11025:
85 bclk = WM8753_BCLK_DIV_16;
86 pll_out = 11289600;
87 break;
88 case 22050:
89 bclk = WM8753_BCLK_DIV_8;
90 pll_out = 11289600;
91 break;
92 case 44100:
93 bclk = WM8753_BCLK_DIV_4;
94 pll_out = 11289600;
95 break;
96 case 88200:
97 bclk = WM8753_BCLK_DIV_2;
98 pll_out = 11289600;
99 break;
100 }
101
102
103 ret = snd_soc_dai_set_fmt(codec_dai,
104 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
105 SND_SOC_DAIFMT_CBM_CFM);
106 if (ret < 0)
107 return ret;
108
109
110 ret = snd_soc_dai_set_fmt(cpu_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
117 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
118 SND_SOC_CLOCK_IN);
119 if (ret < 0)
120 return ret;
121
122
123 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
124 S3C2410_IISMOD_32FS);
125 if (ret < 0)
126 return ret;
127
128
129 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
130 if (ret < 0)
131 return ret;
132
133
134 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
135 S3C24XX_PRESCALE(4, 4));
136 if (ret < 0)
137 return ret;
138
139
140 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1,
141 iis_clkrate / 4, pll_out);
142 if (ret < 0)
143 return ret;
144
145 return 0;
146}
147
148static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
149{
150 struct snd_soc_pcm_runtime *rtd = substream->private_data;
151 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
152
153 pr_debug("Entered %s\n", __func__);
154
155
156 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0);
157}
158
159
160
161
162static struct snd_soc_ops neo1973_hifi_ops = {
163 .hw_params = neo1973_hifi_hw_params,
164 .hw_free = neo1973_hifi_hw_free,
165};
166
167static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
168 struct snd_pcm_hw_params *params)
169{
170 struct snd_soc_pcm_runtime *rtd = substream->private_data;
171 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
172 unsigned int pcmdiv = 0;
173 int ret = 0;
174 unsigned long iis_clkrate;
175
176 pr_debug("Entered %s\n", __func__);
177
178 iis_clkrate = s3c24xx_i2s_get_clockrate();
179
180 if (params_rate(params) != 8000)
181 return -EINVAL;
182 if (params_channels(params) != 1)
183 return -EINVAL;
184
185 pcmdiv = WM8753_PCM_DIV_6;
186
187
188
189 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
190 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
191 if (ret < 0)
192 return ret;
193
194
195 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
196 SND_SOC_CLOCK_IN);
197 if (ret < 0)
198 return ret;
199
200
201 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
202 if (ret < 0)
203 return ret;
204
205
206 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2,
207 iis_clkrate / 4, 12288000);
208 if (ret < 0)
209 return ret;
210
211 return 0;
212}
213
214static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
215{
216 struct snd_soc_pcm_runtime *rtd = substream->private_data;
217 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
218
219 pr_debug("Entered %s\n", __func__);
220
221
222 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0);
223}
224
225static struct snd_soc_ops neo1973_voice_ops = {
226 .hw_params = neo1973_voice_hw_params,
227 .hw_free = neo1973_voice_hw_free,
228};
229
230static int neo1973_scenario;
231
232static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
233 struct snd_ctl_elem_value *ucontrol)
234{
235 ucontrol->value.integer.value[0] = neo1973_scenario;
236 return 0;
237}
238
239static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
240{
241 pr_debug("Entered %s\n", __func__);
242
243 switch (neo1973_scenario) {
244 case NEO_AUDIO_OFF:
245 snd_soc_dapm_disable_pin(codec, "Audio Out");
246 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
247 snd_soc_dapm_disable_pin(codec, "GSM Line In");
248 snd_soc_dapm_disable_pin(codec, "Headset Mic");
249 snd_soc_dapm_disable_pin(codec, "Call Mic");
250 break;
251 case NEO_GSM_CALL_AUDIO_HANDSET:
252 snd_soc_dapm_enable_pin(codec, "Audio Out");
253 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
254 snd_soc_dapm_enable_pin(codec, "GSM Line In");
255 snd_soc_dapm_disable_pin(codec, "Headset Mic");
256 snd_soc_dapm_enable_pin(codec, "Call Mic");
257 break;
258 case NEO_GSM_CALL_AUDIO_HEADSET:
259 snd_soc_dapm_enable_pin(codec, "Audio Out");
260 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
261 snd_soc_dapm_enable_pin(codec, "GSM Line In");
262 snd_soc_dapm_enable_pin(codec, "Headset Mic");
263 snd_soc_dapm_disable_pin(codec, "Call Mic");
264 break;
265 case NEO_GSM_CALL_AUDIO_BLUETOOTH:
266 snd_soc_dapm_disable_pin(codec, "Audio Out");
267 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
268 snd_soc_dapm_enable_pin(codec, "GSM Line In");
269 snd_soc_dapm_disable_pin(codec, "Headset Mic");
270 snd_soc_dapm_disable_pin(codec, "Call Mic");
271 break;
272 case NEO_STEREO_TO_SPEAKERS:
273 snd_soc_dapm_enable_pin(codec, "Audio Out");
274 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
275 snd_soc_dapm_disable_pin(codec, "GSM Line In");
276 snd_soc_dapm_disable_pin(codec, "Headset Mic");
277 snd_soc_dapm_disable_pin(codec, "Call Mic");
278 break;
279 case NEO_STEREO_TO_HEADPHONES:
280 snd_soc_dapm_enable_pin(codec, "Audio Out");
281 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
282 snd_soc_dapm_disable_pin(codec, "GSM Line In");
283 snd_soc_dapm_disable_pin(codec, "Headset Mic");
284 snd_soc_dapm_disable_pin(codec, "Call Mic");
285 break;
286 case NEO_CAPTURE_HANDSET:
287 snd_soc_dapm_disable_pin(codec, "Audio Out");
288 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
289 snd_soc_dapm_disable_pin(codec, "GSM Line In");
290 snd_soc_dapm_disable_pin(codec, "Headset Mic");
291 snd_soc_dapm_enable_pin(codec, "Call Mic");
292 break;
293 case NEO_CAPTURE_HEADSET:
294 snd_soc_dapm_disable_pin(codec, "Audio Out");
295 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
296 snd_soc_dapm_disable_pin(codec, "GSM Line In");
297 snd_soc_dapm_enable_pin(codec, "Headset Mic");
298 snd_soc_dapm_disable_pin(codec, "Call Mic");
299 break;
300 case NEO_CAPTURE_BLUETOOTH:
301 snd_soc_dapm_disable_pin(codec, "Audio Out");
302 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
303 snd_soc_dapm_disable_pin(codec, "GSM Line In");
304 snd_soc_dapm_disable_pin(codec, "Headset Mic");
305 snd_soc_dapm_disable_pin(codec, "Call Mic");
306 break;
307 default:
308 snd_soc_dapm_disable_pin(codec, "Audio Out");
309 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
310 snd_soc_dapm_disable_pin(codec, "GSM Line In");
311 snd_soc_dapm_disable_pin(codec, "Headset Mic");
312 snd_soc_dapm_disable_pin(codec, "Call Mic");
313 }
314
315 snd_soc_dapm_sync(codec);
316
317 return 0;
318}
319
320static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
321 struct snd_ctl_elem_value *ucontrol)
322{
323 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
324
325 pr_debug("Entered %s\n", __func__);
326
327 if (neo1973_scenario == ucontrol->value.integer.value[0])
328 return 0;
329
330 neo1973_scenario = ucontrol->value.integer.value[0];
331 set_scenario_endpoints(codec, neo1973_scenario);
332 return 1;
333}
334
335static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
336
337static void lm4857_write_regs(void)
338{
339 pr_debug("Entered %s\n", __func__);
340
341 if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
342 printk(KERN_ERR "lm4857: i2c write failed\n");
343}
344
345static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
346 struct snd_ctl_elem_value *ucontrol)
347{
348 struct soc_mixer_control *mc =
349 (struct soc_mixer_control *)kcontrol->private_value;
350 int reg = mc->reg;
351 int shift = mc->shift;
352 int mask = mc->max;
353
354 pr_debug("Entered %s\n", __func__);
355
356 ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
357 return 0;
358}
359
360static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
361 struct snd_ctl_elem_value *ucontrol)
362{
363 struct soc_mixer_control *mc =
364 (struct soc_mixer_control *)kcontrol->private_value;
365 int reg = mc->reg;
366 int shift = mc->shift;
367 int mask = mc->max;
368
369 if (((lm4857_regs[reg] >> shift) & mask) ==
370 ucontrol->value.integer.value[0])
371 return 0;
372
373 lm4857_regs[reg] &= ~(mask << shift);
374 lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
375 lm4857_write_regs();
376 return 1;
377}
378
379static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
380 struct snd_ctl_elem_value *ucontrol)
381{
382 u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
383
384 pr_debug("Entered %s\n", __func__);
385
386 if (value)
387 value -= 5;
388
389 ucontrol->value.integer.value[0] = value;
390 return 0;
391}
392
393static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
394 struct snd_ctl_elem_value *ucontrol)
395{
396 u8 value = ucontrol->value.integer.value[0];
397
398 pr_debug("Entered %s\n", __func__);
399
400 if (value)
401 value += 5;
402
403 if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
404 return 0;
405
406 lm4857_regs[LM4857_CTRL] &= 0xF0;
407 lm4857_regs[LM4857_CTRL] |= value;
408 lm4857_write_regs();
409 return 1;
410}
411
412static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
413 SND_SOC_DAPM_LINE("Audio Out", NULL),
414 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
415 SND_SOC_DAPM_LINE("GSM Line In", NULL),
416 SND_SOC_DAPM_MIC("Headset Mic", NULL),
417 SND_SOC_DAPM_MIC("Call Mic", NULL),
418};
419
420
421static const struct snd_soc_dapm_route dapm_routes[] = {
422
423
424 {"Audio Out", NULL, "LOUT1"},
425 {"Audio Out", NULL, "ROUT1"},
426
427
428 {"GSM Line Out", NULL, "MONO1"},
429 {"GSM Line Out", NULL, "MONO2"},
430 {"RXP", NULL, "GSM Line In"},
431 {"RXN", NULL, "GSM Line In"},
432
433
434 {"MIC1", NULL, "Mic Bias"},
435 {"Mic Bias", NULL, "Headset Mic"},
436
437
438 {"MIC2", NULL, "Mic Bias"},
439 {"MIC2N", NULL, "Mic Bias"},
440 {"Mic Bias", NULL, "Call Mic"},
441
442
443 {"ACIN", NULL, "ACOP"},
444};
445
446static const char *lm4857_mode[] = {
447 "Off",
448 "Call Speaker",
449 "Stereo Speakers",
450 "Stereo Speakers + Headphones",
451 "Headphones"
452};
453
454static const struct soc_enum lm4857_mode_enum[] = {
455 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
456};
457
458static const char *neo_scenarios[] = {
459 "Off",
460 "GSM Handset",
461 "GSM Headset",
462 "GSM Bluetooth",
463 "Speakers",
464 "Headphones",
465 "Capture Handset",
466 "Capture Headset",
467 "Capture Bluetooth"
468};
469
470static const struct soc_enum neo_scenario_enum[] = {
471 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
472};
473
474static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
475static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
476
477static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
478 SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
479 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
480 SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
481 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
482 SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
483 lm4857_get_reg, lm4857_set_reg, mono_tlv),
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
500
501
502
503static int neo1973_wm8753_init(struct snd_soc_codec *codec)
504{
505 int err;
506
507 pr_debug("Entered %s\n", __func__);
508
509
510 snd_soc_dapm_nc_pin(codec, "LOUT2");
511 snd_soc_dapm_nc_pin(codec, "ROUT2");
512 snd_soc_dapm_nc_pin(codec, "OUT3");
513 snd_soc_dapm_nc_pin(codec, "OUT4");
514 snd_soc_dapm_nc_pin(codec, "LINE1");
515 snd_soc_dapm_nc_pin(codec, "LINE2");
516
517
518 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
519 ARRAY_SIZE(wm8753_dapm_widgets));
520
521
522 set_scenario_endpoints(codec, NEO_AUDIO_OFF);
523
524
525 err = snd_soc_add_controls(codec, wm8753_neo1973_controls,
526 ARRAY_SIZE(8753_neo1973_controls));
527 if (err < 0)
528 return err;
529
530
531 err = snd_soc_dapm_add_routes(codec, dapm_routes,
532 ARRAY_SIZE(dapm_routes));
533
534 snd_soc_dapm_sync(codec);
535 return 0;
536}
537
538
539
540
541static struct snd_soc_dai bt_dai = {
542 .name = "Bluetooth",
543 .id = 0,
544 .playback = {
545 .channels_min = 1,
546 .channels_max = 1,
547 .rates = SNDRV_PCM_RATE_8000,
548 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
549 .capture = {
550 .channels_min = 1,
551 .channels_max = 1,
552 .rates = SNDRV_PCM_RATE_8000,
553 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
554};
555
556static struct snd_soc_dai_link neo1973_dai[] = {
557{
558 .name = "WM8753",
559 .stream_name = "WM8753 HiFi",
560 .cpu_dai = &s3c24xx_i2s_dai,
561 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
562 .init = neo1973_wm8753_init,
563 .ops = &neo1973_hifi_ops,
564},
565{
566 .name = "Bluetooth",
567 .stream_name = "Voice",
568 .cpu_dai = &bt_dai,
569 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
570 .ops = &neo1973_voice_ops,
571},
572};
573
574static struct snd_soc_card neo1973 = {
575 .name = "neo1973",
576 .platform = &s3c24xx_soc_platform,
577 .dai_link = neo1973_dai,
578 .num_links = ARRAY_SIZE(neo1973_dai),
579};
580
581static struct snd_soc_device neo1973_snd_devdata = {
582 .card = &neo1973,
583 .codec_dev = &soc_codec_dev_wm8753,
584};
585
586static int lm4857_i2c_probe(struct i2c_client *client,
587 const struct i2c_device_id *id)
588{
589 pr_debug("Entered %s\n", __func__);
590
591 i2c = client;
592
593 lm4857_write_regs();
594 return 0;
595}
596
597static int lm4857_i2c_remove(struct i2c_client *client)
598{
599 pr_debug("Entered %s\n", __func__);
600
601 i2c = NULL;
602
603 return 0;
604}
605
606static u8 lm4857_state;
607
608static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
609{
610 pr_debug("Entered %s\n", __func__);
611
612 dev_dbg(&dev->dev, "lm4857_suspend\n");
613 lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
614 if (lm4857_state) {
615 lm4857_regs[LM4857_CTRL] &= 0xf0;
616 lm4857_write_regs();
617 }
618 return 0;
619}
620
621static int lm4857_resume(struct i2c_client *dev)
622{
623 pr_debug("Entered %s\n", __func__);
624
625 if (lm4857_state) {
626 lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
627 lm4857_write_regs();
628 }
629 return 0;
630}
631
632static void lm4857_shutdown(struct i2c_client *dev)
633{
634 pr_debug("Entered %s\n", __func__);
635
636 dev_dbg(&dev->dev, "lm4857_shutdown\n");
637 lm4857_regs[LM4857_CTRL] &= 0xf0;
638 lm4857_write_regs();
639}
640
641static const struct i2c_device_id lm4857_i2c_id[] = {
642 { "neo1973_lm4857", 0 },
643 { }
644};
645
646static struct i2c_driver lm4857_i2c_driver = {
647 .driver = {
648 .name = "LM4857 I2C Amp",
649 .owner = THIS_MODULE,
650 },
651 .suspend = lm4857_suspend,
652 .resume = lm4857_resume,
653 .shutdown = lm4857_shutdown,
654 .probe = lm4857_i2c_probe,
655 .remove = lm4857_i2c_remove,
656 .id_table = lm4857_i2c_id,
657};
658
659static struct platform_device *neo1973_snd_device;
660
661static int __init neo1973_init(void)
662{
663 int ret;
664
665 pr_debug("Entered %s\n", __func__);
666
667 if (!machine_is_neo1973_gta01()) {
668 printk(KERN_INFO
669 "Only GTA01 hardware supported by ASoC driver\n");
670 return -ENODEV;
671 }
672
673 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
674 if (!neo1973_snd_device)
675 return -ENOMEM;
676
677 platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
678 neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
679 ret = platform_device_add(neo1973_snd_device);
680
681 if (ret) {
682 platform_device_put(neo1973_snd_device);
683 return ret;
684 }
685
686 ret = i2c_add_driver(&lm4857_i2c_driver);
687
688 if (ret != 0)
689 platform_device_unregister(neo1973_snd_device);
690
691 return ret;
692}
693
694static void __exit neo1973_exit(void)
695{
696 pr_debug("Entered %s\n", __func__);
697
698 i2c_del_driver(&lm4857_i2c_driver);
699 platform_device_unregister(neo1973_snd_device);
700}
701
702module_init(neo1973_init);
703module_exit(neo1973_exit);
704
705
706MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
707MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
708MODULE_LICENSE("GPL");
709
