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-rw-r--r--sound/soc/s3c24xx/neo1973_wm8753.c670
1 files changed, 670 insertions, 0 deletions
diff --git a/sound/soc/s3c24xx/neo1973_wm8753.c b/sound/soc/s3c24xx/neo1973_wm8753.c
new file mode 100644
index 000000000000..d5a8fc2cf8d6
--- /dev/null
+++ b/sound/soc/s3c24xx/neo1973_wm8753.c
@@ -0,0 +1,670 @@
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 *
13 * Revision history
14 * 20th Jan 2007 Initial version.
15 * 05th Feb 2007 Rename all to Neo1973
16 *
17 */
18
19#include <linux/module.h>
20#include <linux/moduleparam.h>
21#include <linux/timer.h>
22#include <linux/interrupt.h>
23#include <linux/platform_device.h>
24#include <linux/i2c.h>
25#include <sound/driver.h>
26#include <sound/core.h>
27#include <sound/pcm.h>
28#include <sound/soc.h>
29#include <sound/soc-dapm.h>
30
31#include <asm/mach-types.h>
32#include <asm/hardware/scoop.h>
33#include <asm/arch/regs-iis.h>
34#include <asm/arch/regs-clock.h>
35#include <asm/arch/regs-gpio.h>
36#include <asm/hardware.h>
37#include <asm/arch/audio.h>
38#include <asm/io.h>
39#include <asm/arch/spi-gpio.h>
40#include "../codecs/wm8753.h"
41#include "lm4857.h"
42#include "s3c24xx-pcm.h"
43#include "s3c24xx-i2s.h"
44
45/* define the scenarios */
46#define NEO_AUDIO_OFF 0
47#define NEO_GSM_CALL_AUDIO_HANDSET 1
48#define NEO_GSM_CALL_AUDIO_HEADSET 2
49#define NEO_GSM_CALL_AUDIO_BLUETOOTH 3
50#define NEO_STEREO_TO_SPEAKERS 4
51#define NEO_STEREO_TO_HEADPHONES 5
52#define NEO_CAPTURE_HANDSET 6
53#define NEO_CAPTURE_HEADSET 7
54#define NEO_CAPTURE_BLUETOOTH 8
55
56static struct snd_soc_machine neo1973;
57static struct i2c_client *i2c;
58
59static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
60 struct snd_pcm_hw_params *params)
61{
62 struct snd_soc_pcm_runtime *rtd = substream->private_data;
63 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
64 struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
65 unsigned int pll_out = 0, bclk = 0;
66 int ret = 0;
67 unsigned long iis_clkrate;
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 /* set codec DAI configuration */
103 ret = codec_dai->dai_ops.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 /* set cpu DAI configuration */
110 ret = cpu_dai->dai_ops.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 /* set the codec system clock for DAC and ADC */
117 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_MCLK, pll_out,
118 SND_SOC_CLOCK_IN);
119 if (ret < 0)
120 return ret;
121
122 /* set MCLK division for sample rate */
123 ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
124 S3C2410_IISMOD_32FS );
125 if (ret < 0)
126 return ret;
127
128 /* set codec BCLK division for sample rate */
129 ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
130 if (ret < 0)
131 return ret;
132
133 /* set prescaler division for sample rate */
134 ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
135 S3C24XX_PRESCALE(4,4));
136 if (ret < 0)
137 return ret;
138
139 /* codec PLL input is PCLK/4 */
140 ret = codec_dai->dai_ops.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_codec_dai *codec_dai = rtd->dai->codec_dai;
152
153 /* disable the PLL */
154 return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1, 0, 0);
155}
156
157/*
158 * Neo1973 WM8753 HiFi DAI opserations.
159 */
160static struct snd_soc_ops neo1973_hifi_ops = {
161 .hw_params = neo1973_hifi_hw_params,
162 .hw_free = neo1973_hifi_hw_free,
163};
164
165static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
166 struct snd_pcm_hw_params *params)
167{
168 struct snd_soc_pcm_runtime *rtd = substream->private_data;
169 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
170 unsigned int pcmdiv = 0;
171 int ret = 0;
172 unsigned long iis_clkrate;
173
174 iis_clkrate = s3c24xx_i2s_get_clockrate();
175
176 if (params_rate(params) != 8000)
177 return -EINVAL;
178 if (params_channels(params) != 1)
179 return -EINVAL;
180
181 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
182
183 /* todo: gg check mode (DSP_B) against CSR datasheet */
184 /* set codec DAI configuration */
185 ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
186 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
187 if (ret < 0)
188 return ret;
189
190 /* set the codec system clock for DAC and ADC */
191 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
192 SND_SOC_CLOCK_IN);
193 if (ret < 0)
194 return ret;
195
196 /* set codec PCM division for sample rate */
197 ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
198 if (ret < 0)
199 return ret;
200
201 /* configue and enable PLL for 12.288MHz output */
202 ret = codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2,
203 iis_clkrate / 4, 12288000);
204 if (ret < 0)
205 return ret;
206
207 return 0;
208}
209
210static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
211{
212 struct snd_soc_pcm_runtime *rtd = substream->private_data;
213 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
214
215 /* disable the PLL */
216 return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2, 0, 0);
217}
218
219static struct snd_soc_ops neo1973_voice_ops = {
220 .hw_params = neo1973_voice_hw_params,
221 .hw_free = neo1973_voice_hw_free,
222};
223
224static int neo1973_scenario = 0;
225
226static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
227 struct snd_ctl_elem_value *ucontrol)
228{
229 ucontrol->value.integer.value[0] = neo1973_scenario;
230 return 0;
231}
232
233static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
234{
235 switch(neo1973_scenario) {
236 case NEO_AUDIO_OFF:
237 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
238 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
239 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
240 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
241 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
242 break;
243 case NEO_GSM_CALL_AUDIO_HANDSET:
244 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
245 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
246 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
247 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
248 snd_soc_dapm_set_endpoint(codec, "Call Mic", 1);
249 break;
250 case NEO_GSM_CALL_AUDIO_HEADSET:
251 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
252 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
253 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
254 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 1);
255 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
256 break;
257 case NEO_GSM_CALL_AUDIO_BLUETOOTH:
258 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
259 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 1);
260 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 1);
261 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
262 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
263 break;
264 case NEO_STEREO_TO_SPEAKERS:
265 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
266 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
267 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
268 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
269 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
270 break;
271 case NEO_STEREO_TO_HEADPHONES:
272 snd_soc_dapm_set_endpoint(codec, "Audio Out", 1);
273 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
274 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
275 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
276 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
277 break;
278 case NEO_CAPTURE_HANDSET:
279 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
280 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
281 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
282 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
283 snd_soc_dapm_set_endpoint(codec, "Call Mic", 1);
284 break;
285 case NEO_CAPTURE_HEADSET:
286 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
287 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
288 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
289 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 1);
290 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
291 break;
292 case NEO_CAPTURE_BLUETOOTH:
293 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
294 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
295 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
296 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
297 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
298 break;
299 default:
300 snd_soc_dapm_set_endpoint(codec, "Audio Out", 0);
301 snd_soc_dapm_set_endpoint(codec, "GSM Line Out", 0);
302 snd_soc_dapm_set_endpoint(codec, "GSM Line In", 0);
303 snd_soc_dapm_set_endpoint(codec, "Headset Mic", 0);
304 snd_soc_dapm_set_endpoint(codec, "Call Mic", 0);
305 }
306
307 snd_soc_dapm_sync_endpoints(codec);
308
309 return 0;
310}
311
312static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
313 struct snd_ctl_elem_value *ucontrol)
314{
315 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
316
317 if (neo1973_scenario == ucontrol->value.integer.value[0])
318 return 0;
319
320 neo1973_scenario = ucontrol->value.integer.value[0];
321 set_scenario_endpoints(codec, neo1973_scenario);
322 return 1;
323}
324
325static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
326
327static void lm4857_write_regs(void)
328{
329 if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
330 printk(KERN_ERR "lm4857: i2c write failed\n");
331}
332
333static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
334 struct snd_ctl_elem_value *ucontrol)
335{
336 int reg=kcontrol->private_value & 0xFF;
337 int shift = (kcontrol->private_value >> 8) & 0x0F;
338 int mask = (kcontrol->private_value >> 16) & 0xFF;
339
340 ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
341 return 0;
342}
343
344static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
345 struct snd_ctl_elem_value *ucontrol)
346{
347 int reg = kcontrol->private_value & 0xFF;
348 int shift = (kcontrol->private_value >> 8) & 0x0F;
349 int mask = (kcontrol->private_value >> 16) & 0xFF;
350
351 if (((lm4857_regs[reg] >> shift ) & mask) ==
352 ucontrol->value.integer.value[0])
353 return 0;
354
355 lm4857_regs[reg] &= ~ (mask << shift);
356 lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
357 lm4857_write_regs();
358 return 1;
359}
360
361static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
362 struct snd_ctl_elem_value *ucontrol)
363{
364 u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
365
366 if (value)
367 value -= 5;
368
369 ucontrol->value.integer.value[0] = value;
370 return 0;
371}
372
373static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
374 struct snd_ctl_elem_value *ucontrol)
375{
376 u8 value = ucontrol->value.integer.value[0];
377
378 if (value)
379 value += 5;
380
381 if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
382 return 0;
383
384 lm4857_regs[LM4857_CTRL] &= 0xF0;
385 lm4857_regs[LM4857_CTRL] |= value;
386 lm4857_write_regs();
387 return 1;
388}
389
390static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
391 SND_SOC_DAPM_LINE("Audio Out", NULL),
392 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
393 SND_SOC_DAPM_LINE("GSM Line In", NULL),
394 SND_SOC_DAPM_MIC("Headset Mic", NULL),
395 SND_SOC_DAPM_MIC("Call Mic", NULL),
396};
397
398
399/* example machine audio_mapnections */
400static const char* audio_map[][3] = {
401
402 /* Connections to the lm4857 amp */
403 {"Audio Out", NULL, "LOUT1"},
404 {"Audio Out", NULL, "ROUT1"},
405
406 /* Connections to the GSM Module */
407 {"GSM Line Out", NULL, "MONO1"},
408 {"GSM Line Out", NULL, "MONO2"},
409 {"RXP", NULL, "GSM Line In"},
410 {"RXN", NULL, "GSM Line In"},
411
412 /* Connections to Headset */
413 {"MIC1", NULL, "Mic Bias"},
414 {"Mic Bias", NULL, "Headset Mic"},
415
416 /* Call Mic */
417 {"MIC2", NULL, "Mic Bias"},
418 {"MIC2N", NULL, "Mic Bias"},
419 {"Mic Bias", NULL, "Call Mic"},
420
421 /* Connect the ALC pins */
422 {"ACIN", NULL, "ACOP"},
423
424 {NULL, NULL, NULL},
425};
426
427static const char *lm4857_mode[] = {
428 "Off",
429 "Call Speaker",
430 "Stereo Speakers",
431 "Stereo Speakers + Headphones",
432 "Headphones"
433};
434
435static const struct soc_enum lm4857_mode_enum[] = {
436 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
437};
438
439static const char *neo_scenarios[] = {
440 "Off",
441 "GSM Handset",
442 "GSM Headset",
443 "GSM Bluetooth",
444 "Speakers",
445 "Headphones",
446 "Capture Handset",
447 "Capture Headset",
448 "Capture Bluetooth"
449};
450
451static const struct soc_enum neo_scenario_enum[] = {
452 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios),neo_scenarios),
453};
454
455static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
456 SOC_SINGLE_EXT("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
457 lm4857_get_reg, lm4857_set_reg),
458 SOC_SINGLE_EXT("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
459 lm4857_get_reg, lm4857_set_reg),
460 SOC_SINGLE_EXT("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
461 lm4857_get_reg, lm4857_set_reg),
462 SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
463 lm4857_get_mode, lm4857_set_mode),
464 SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
465 neo1973_get_scenario, neo1973_set_scenario),
466 SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
467 lm4857_get_reg, lm4857_set_reg),
468 SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
469 lm4857_get_reg, lm4857_set_reg),
470 SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
471 lm4857_get_reg, lm4857_set_reg),
472 SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
473 lm4857_get_reg, lm4857_set_reg),
474};
475
476/*
477 * This is an example machine initialisation for a wm8753 connected to a
478 * neo1973 II. It is missing logic to detect hp/mic insertions and logic
479 * to re-route the audio in such an event.
480 */
481static int neo1973_wm8753_init(struct snd_soc_codec *codec)
482{
483 int i, err;
484
485 /* set up NC codec pins */
486 snd_soc_dapm_set_endpoint(codec, "LOUT2", 0);
487 snd_soc_dapm_set_endpoint(codec, "ROUT2", 0);
488 snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
489 snd_soc_dapm_set_endpoint(codec, "OUT4", 0);
490 snd_soc_dapm_set_endpoint(codec, "LINE1", 0);
491 snd_soc_dapm_set_endpoint(codec, "LINE2", 0);
492
493
494 /* set endpoints to default mode */
495 set_scenario_endpoints(codec, NEO_AUDIO_OFF);
496
497 /* Add neo1973 specific widgets */
498 for (i = 0; i < ARRAY_SIZE(wm8753_dapm_widgets); i++)
499 snd_soc_dapm_new_control(codec, &wm8753_dapm_widgets[i]);
500
501 /* add neo1973 specific controls */
502 for (i = 0; i < ARRAY_SIZE(wm8753_neo1973_controls); i++) {
503 err = snd_ctl_add(codec->card,
504 snd_soc_cnew(&wm8753_neo1973_controls[i],
505 codec, NULL));
506 if (err < 0)
507 return err;
508 }
509
510 /* set up neo1973 specific audio path audio_mapnects */
511 for (i = 0; audio_map[i][0] != NULL; i++) {
512 snd_soc_dapm_connect_input(codec, audio_map[i][0],
513 audio_map[i][1], audio_map[i][2]);
514 }
515
516 snd_soc_dapm_sync_endpoints(codec);
517 return 0;
518}
519
520/*
521 * BT Codec DAI
522 */
523static struct snd_soc_cpu_dai bt_dai =
524{ .name = "Bluetooth",
525 .id = 0,
526 .type = SND_SOC_DAI_PCM,
527 .playback = {
528 .channels_min = 1,
529 .channels_max = 1,
530 .rates = SNDRV_PCM_RATE_8000,
531 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
532 .capture = {
533 .channels_min = 1,
534 .channels_max = 1,
535 .rates = SNDRV_PCM_RATE_8000,
536 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
537};
538
539static struct snd_soc_dai_link neo1973_dai[] = {
540{ /* Hifi Playback - for similatious use with voice below */
541 .name = "WM8753",
542 .stream_name = "WM8753 HiFi",
543 .cpu_dai = &s3c24xx_i2s_dai,
544 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
545 .init = neo1973_wm8753_init,
546 .ops = &neo1973_hifi_ops,
547},
548{ /* Voice via BT */
549 .name = "Bluetooth",
550 .stream_name = "Voice",
551 .cpu_dai = &bt_dai,
552 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
553 .ops = &neo1973_voice_ops,
554},
555};
556
557static struct snd_soc_machine neo1973 = {
558 .name = "neo1973",
559 .dai_link = neo1973_dai,
560 .num_links = ARRAY_SIZE(neo1973_dai),
561};
562
563static struct wm8753_setup_data neo1973_wm8753_setup = {
564 .i2c_address = 0x1a,
565};
566
567static struct snd_soc_device neo1973_snd_devdata = {
568 .machine = &neo1973,
569 .platform = &s3c24xx_soc_platform,
570 .codec_dev = &soc_codec_dev_wm8753,
571 .codec_data = &neo1973_wm8753_setup,
572};
573
574static struct i2c_client client_template;
575
576static unsigned short normal_i2c[] = { 0x7C, I2C_CLIENT_END };
577
578/* Magic definition of all other variables and things */
579I2C_CLIENT_INSMOD;
580
581static int lm4857_amp_probe(struct i2c_adapter *adap, int addr, int kind)
582{
583 int ret;
584
585 client_template.adapter = adap;
586 client_template.addr = addr;
587
588 i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
589 if (i2c == NULL)
590 return -ENOMEM;
591
592 ret = i2c_attach_client(i2c);
593 if (ret < 0) {
594 printk(KERN_ERR "LM4857 failed to attach at addr %x\n", addr);
595 goto exit_err;
596 }
597
598 lm4857_write_regs();
599 return ret;
600
601exit_err:
602 kfree(i2c);
603 return ret;
604}
605
606static int lm4857_i2c_detach(struct i2c_client *client)
607{
608 i2c_detach_client(client);
609 kfree(client);
610 return 0;
611}
612
613static int lm4857_i2c_attach(struct i2c_adapter *adap)
614{
615 return i2c_probe(adap, &addr_data, lm4857_amp_probe);
616}
617
618/* corgi i2c codec control layer */
619static struct i2c_driver lm4857_i2c_driver = {
620 .driver = {
621 .name = "LM4857 I2C Amp",
622 .owner = THIS_MODULE,
623 },
624 .id = I2C_DRIVERID_LM4857,
625 .attach_adapter = lm4857_i2c_attach,
626 .detach_client = lm4857_i2c_detach,
627 .command = NULL,
628};
629
630static struct i2c_client client_template = {
631 .name = "LM4857",
632 .driver = &lm4857_i2c_driver,
633};
634
635static struct platform_device *neo1973_snd_device;
636
637static int __init neo1973_init(void)
638{
639 int ret;
640
641 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
642 if (!neo1973_snd_device)
643 return -ENOMEM;
644
645 platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
646 neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
647 ret = platform_device_add(neo1973_snd_device);
648
649 if (ret)
650 platform_device_put(neo1973_snd_device);
651
652 ret = i2c_add_driver(&lm4857_i2c_driver);
653 if (ret != 0)
654 printk(KERN_ERR "can't add i2c driver");
655
656 return ret;
657}
658
659static void __exit neo1973_exit(void)
660{
661 platform_device_unregister(neo1973_snd_device);
662}
663
664module_init(neo1973_init);
665module_exit(neo1973_exit);
666
667/* Module information */
668MODULE_AUTHOR("Graeme Gregory, graeme.gregory@wolfsonmicro.com, www.wolfsonmicro.com");
669MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
670MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-14 21:06:02 -0500