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Diffstat (limited to 'sound/soc/s3c24xx/neo1973_wm8753.c')
-rw-r--r--sound/soc/s3c24xx/neo1973_wm8753.c707
1 files changed, 0 insertions, 707 deletions
diff --git a/sound/soc/s3c24xx/neo1973_wm8753.c b/sound/soc/s3c24xx/neo1973_wm8753.c
deleted file mode 100644
index 0cb4f86f6d1e..000000000000
--- a/sound/soc/s3c24xx/neo1973_wm8753.c
+++ /dev/null
@@ -1,707 +0,0 @@
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 */
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 <linux/io.h>
33#include <mach/spi-gpio.h>
34
35#include <plat/regs-iis.h>
36
37#include "../codecs/wm8753.h"
38#include "lm4857.h"
39#include "s3c-dma.h"
40#include "s3c24xx-i2s.h"
41
42/* define the scenarios */
43#define NEO_AUDIO_OFF 0
44#define NEO_GSM_CALL_AUDIO_HANDSET 1
45#define NEO_GSM_CALL_AUDIO_HEADSET 2
46#define NEO_GSM_CALL_AUDIO_BLUETOOTH 3
47#define NEO_STEREO_TO_SPEAKERS 4
48#define NEO_STEREO_TO_HEADPHONES 5
49#define NEO_CAPTURE_HANDSET 6
50#define NEO_CAPTURE_HEADSET 7
51#define NEO_CAPTURE_BLUETOOTH 8
52
53static struct snd_soc_card neo1973;
54static struct i2c_client *i2c;
55
56static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
57 struct snd_pcm_hw_params *params)
58{
59 struct snd_soc_pcm_runtime *rtd = substream->private_data;
60 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
61 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
62 unsigned int pll_out = 0, bclk = 0;
63 int ret = 0;
64 unsigned long iis_clkrate;
65
66 pr_debug("Entered %s\n", __func__);
67
68 iis_clkrate = s3c24xx_i2s_get_clockrate();
69
70 switch (params_rate(params)) {
71 case 8000:
72 case 16000:
73 pll_out = 12288000;
74 break;
75 case 48000:
76 bclk = WM8753_BCLK_DIV_4;
77 pll_out = 12288000;
78 break;
79 case 96000:
80 bclk = WM8753_BCLK_DIV_2;
81 pll_out = 12288000;
82 break;
83 case 11025:
84 bclk = WM8753_BCLK_DIV_16;
85 pll_out = 11289600;
86 break;
87 case 22050:
88 bclk = WM8753_BCLK_DIV_8;
89 pll_out = 11289600;
90 break;
91 case 44100:
92 bclk = WM8753_BCLK_DIV_4;
93 pll_out = 11289600;
94 break;
95 case 88200:
96 bclk = WM8753_BCLK_DIV_2;
97 pll_out = 11289600;
98 break;
99 }
100
101 /* set codec DAI configuration */
102 ret = snd_soc_dai_set_fmt(codec_dai,
103 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
104 SND_SOC_DAIFMT_CBM_CFM);
105 if (ret < 0)
106 return ret;
107
108 /* set cpu DAI configuration */
109 ret = snd_soc_dai_set_fmt(cpu_dai,
110 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
111 SND_SOC_DAIFMT_CBM_CFM);
112 if (ret < 0)
113 return ret;
114
115 /* set the codec system clock for DAC and ADC */
116 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
117 SND_SOC_CLOCK_IN);
118 if (ret < 0)
119 return ret;
120
121 /* set MCLK division for sample rate */
122 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
123 S3C2410_IISMOD_32FS);
124 if (ret < 0)
125 return ret;
126
127 /* set codec BCLK division for sample rate */
128 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
129 if (ret < 0)
130 return ret;
131
132 /* set prescaler division for sample rate */
133 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
134 S3C24XX_PRESCALE(4, 4));
135 if (ret < 0)
136 return ret;
137
138 /* codec PLL input is PCLK/4 */
139 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
140 iis_clkrate / 4, pll_out);
141 if (ret < 0)
142 return ret;
143
144 return 0;
145}
146
147static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
148{
149 struct snd_soc_pcm_runtime *rtd = substream->private_data;
150 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
151
152 pr_debug("Entered %s\n", __func__);
153
154 /* disable the PLL */
155 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
156}
157
158/*
159 * Neo1973 WM8753 HiFi DAI opserations.
160 */
161static struct snd_soc_ops neo1973_hifi_ops = {
162 .hw_params = neo1973_hifi_hw_params,
163 .hw_free = neo1973_hifi_hw_free,
164};
165
166static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
167 struct snd_pcm_hw_params *params)
168{
169 struct snd_soc_pcm_runtime *rtd = substream->private_data;
170 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
171 unsigned int pcmdiv = 0;
172 int ret = 0;
173 unsigned long iis_clkrate;
174
175 pr_debug("Entered %s\n", __func__);
176
177 iis_clkrate = s3c24xx_i2s_get_clockrate();
178
179 if (params_rate(params) != 8000)
180 return -EINVAL;
181 if (params_channels(params) != 1)
182 return -EINVAL;
183
184 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
185
186 /* todo: gg check mode (DSP_B) against CSR datasheet */
187 /* set codec DAI configuration */
188 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
189 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
190 if (ret < 0)
191 return ret;
192
193 /* set the codec system clock for DAC and ADC */
194 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
195 SND_SOC_CLOCK_IN);
196 if (ret < 0)
197 return ret;
198
199 /* set codec PCM division for sample rate */
200 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
201 if (ret < 0)
202 return ret;
203
204 /* configue and enable PLL for 12.288MHz output */
205 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
206 iis_clkrate / 4, 12288000);
207 if (ret < 0)
208 return ret;
209
210 return 0;
211}
212
213static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
214{
215 struct snd_soc_pcm_runtime *rtd = substream->private_data;
216 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
217
218 pr_debug("Entered %s\n", __func__);
219
220 /* disable the PLL */
221 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
222}
223
224static struct snd_soc_ops neo1973_voice_ops = {
225 .hw_params = neo1973_voice_hw_params,
226 .hw_free = neo1973_voice_hw_free,
227};
228
229static int neo1973_scenario;
230
231static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
232 struct snd_ctl_elem_value *ucontrol)
233{
234 ucontrol->value.integer.value[0] = neo1973_scenario;
235 return 0;
236}
237
238static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
239{
240 pr_debug("Entered %s\n", __func__);
241
242 switch (neo1973_scenario) {
243 case NEO_AUDIO_OFF:
244 snd_soc_dapm_disable_pin(codec, "Audio Out");
245 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
246 snd_soc_dapm_disable_pin(codec, "GSM Line In");
247 snd_soc_dapm_disable_pin(codec, "Headset Mic");
248 snd_soc_dapm_disable_pin(codec, "Call Mic");
249 break;
250 case NEO_GSM_CALL_AUDIO_HANDSET:
251 snd_soc_dapm_enable_pin(codec, "Audio Out");
252 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
253 snd_soc_dapm_enable_pin(codec, "GSM Line In");
254 snd_soc_dapm_disable_pin(codec, "Headset Mic");
255 snd_soc_dapm_enable_pin(codec, "Call Mic");
256 break;
257 case NEO_GSM_CALL_AUDIO_HEADSET:
258 snd_soc_dapm_enable_pin(codec, "Audio Out");
259 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
260 snd_soc_dapm_enable_pin(codec, "GSM Line In");
261 snd_soc_dapm_enable_pin(codec, "Headset Mic");
262 snd_soc_dapm_disable_pin(codec, "Call Mic");
263 break;
264 case NEO_GSM_CALL_AUDIO_BLUETOOTH:
265 snd_soc_dapm_disable_pin(codec, "Audio Out");
266 snd_soc_dapm_enable_pin(codec, "GSM Line Out");
267 snd_soc_dapm_enable_pin(codec, "GSM Line In");
268 snd_soc_dapm_disable_pin(codec, "Headset Mic");
269 snd_soc_dapm_disable_pin(codec, "Call Mic");
270 break;
271 case NEO_STEREO_TO_SPEAKERS:
272 snd_soc_dapm_enable_pin(codec, "Audio Out");
273 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
274 snd_soc_dapm_disable_pin(codec, "GSM Line In");
275 snd_soc_dapm_disable_pin(codec, "Headset Mic");
276 snd_soc_dapm_disable_pin(codec, "Call Mic");
277 break;
278 case NEO_STEREO_TO_HEADPHONES:
279 snd_soc_dapm_enable_pin(codec, "Audio Out");
280 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
281 snd_soc_dapm_disable_pin(codec, "GSM Line In");
282 snd_soc_dapm_disable_pin(codec, "Headset Mic");
283 snd_soc_dapm_disable_pin(codec, "Call Mic");
284 break;
285 case NEO_CAPTURE_HANDSET:
286 snd_soc_dapm_disable_pin(codec, "Audio Out");
287 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
288 snd_soc_dapm_disable_pin(codec, "GSM Line In");
289 snd_soc_dapm_disable_pin(codec, "Headset Mic");
290 snd_soc_dapm_enable_pin(codec, "Call Mic");
291 break;
292 case NEO_CAPTURE_HEADSET:
293 snd_soc_dapm_disable_pin(codec, "Audio Out");
294 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
295 snd_soc_dapm_disable_pin(codec, "GSM Line In");
296 snd_soc_dapm_enable_pin(codec, "Headset Mic");
297 snd_soc_dapm_disable_pin(codec, "Call Mic");
298 break;
299 case NEO_CAPTURE_BLUETOOTH:
300 snd_soc_dapm_disable_pin(codec, "Audio Out");
301 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
302 snd_soc_dapm_disable_pin(codec, "GSM Line In");
303 snd_soc_dapm_disable_pin(codec, "Headset Mic");
304 snd_soc_dapm_disable_pin(codec, "Call Mic");
305 break;
306 default:
307 snd_soc_dapm_disable_pin(codec, "Audio Out");
308 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
309 snd_soc_dapm_disable_pin(codec, "GSM Line In");
310 snd_soc_dapm_disable_pin(codec, "Headset Mic");
311 snd_soc_dapm_disable_pin(codec, "Call Mic");
312 }
313
314 snd_soc_dapm_sync(codec);
315
316 return 0;
317}
318
319static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
320 struct snd_ctl_elem_value *ucontrol)
321{
322 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
323
324 pr_debug("Entered %s\n", __func__);
325
326 if (neo1973_scenario == ucontrol->value.integer.value[0])
327 return 0;
328
329 neo1973_scenario = ucontrol->value.integer.value[0];
330 set_scenario_endpoints(codec, neo1973_scenario);
331 return 1;
332}
333
334static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
335
336static void lm4857_write_regs(void)
337{
338 pr_debug("Entered %s\n", __func__);
339
340 if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
341 printk(KERN_ERR "lm4857: i2c write failed\n");
342}
343
344static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
345 struct snd_ctl_elem_value *ucontrol)
346{
347 struct soc_mixer_control *mc =
348 (struct soc_mixer_control *)kcontrol->private_value;
349 int reg = mc->reg;
350 int shift = mc->shift;
351 int mask = mc->max;
352
353 pr_debug("Entered %s\n", __func__);
354
355 ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
356 return 0;
357}
358
359static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
360 struct snd_ctl_elem_value *ucontrol)
361{
362 struct soc_mixer_control *mc =
363 (struct soc_mixer_control *)kcontrol->private_value;
364 int reg = mc->reg;
365 int shift = mc->shift;
366 int mask = mc->max;
367
368 if (((lm4857_regs[reg] >> shift) & mask) ==
369 ucontrol->value.integer.value[0])
370 return 0;
371
372 lm4857_regs[reg] &= ~(mask << shift);
373 lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
374 lm4857_write_regs();
375 return 1;
376}
377
378static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
379 struct snd_ctl_elem_value *ucontrol)
380{
381 u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
382
383 pr_debug("Entered %s\n", __func__);
384
385 if (value)
386 value -= 5;
387
388 ucontrol->value.integer.value[0] = value;
389 return 0;
390}
391
392static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
393 struct snd_ctl_elem_value *ucontrol)
394{
395 u8 value = ucontrol->value.integer.value[0];
396
397 pr_debug("Entered %s\n", __func__);
398
399 if (value)
400 value += 5;
401
402 if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
403 return 0;
404
405 lm4857_regs[LM4857_CTRL] &= 0xF0;
406 lm4857_regs[LM4857_CTRL] |= value;
407 lm4857_write_regs();
408 return 1;
409}
410
411static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
412 SND_SOC_DAPM_LINE("Audio Out", NULL),
413 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
414 SND_SOC_DAPM_LINE("GSM Line In", NULL),
415 SND_SOC_DAPM_MIC("Headset Mic", NULL),
416 SND_SOC_DAPM_MIC("Call Mic", NULL),
417};
418
419
420static const struct snd_soc_dapm_route dapm_routes[] = {
421
422 /* Connections to the lm4857 amp */
423 {"Audio Out", NULL, "LOUT1"},
424 {"Audio Out", NULL, "ROUT1"},
425
426 /* Connections to the GSM Module */
427 {"GSM Line Out", NULL, "MONO1"},
428 {"GSM Line Out", NULL, "MONO2"},
429 {"RXP", NULL, "GSM Line In"},
430 {"RXN", NULL, "GSM Line In"},
431
432 /* Connections to Headset */
433 {"MIC1", NULL, "Mic Bias"},
434 {"Mic Bias", NULL, "Headset Mic"},
435
436 /* Call Mic */
437 {"MIC2", NULL, "Mic Bias"},
438 {"MIC2N", NULL, "Mic Bias"},
439 {"Mic Bias", NULL, "Call Mic"},
440
441 /* Connect the ALC pins */
442 {"ACIN", NULL, "ACOP"},
443};
444
445static const char *lm4857_mode[] = {
446 "Off",
447 "Call Speaker",
448 "Stereo Speakers",
449 "Stereo Speakers + Headphones",
450 "Headphones"
451};
452
453static const struct soc_enum lm4857_mode_enum[] = {
454 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
455};
456
457static const char *neo_scenarios[] = {
458 "Off",
459 "GSM Handset",
460 "GSM Headset",
461 "GSM Bluetooth",
462 "Speakers",
463 "Headphones",
464 "Capture Handset",
465 "Capture Headset",
466 "Capture Bluetooth"
467};
468
469static const struct soc_enum neo_scenario_enum[] = {
470 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
471};
472
473static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
474static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
475
476static const struct snd_kcontrol_new wm8753_neo1973_controls[] = {
477 SOC_SINGLE_EXT_TLV("Amp Left Playback Volume", LM4857_LVOL, 0, 31, 0,
478 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
479 SOC_SINGLE_EXT_TLV("Amp Right Playback Volume", LM4857_RVOL, 0, 31, 0,
480 lm4857_get_reg, lm4857_set_reg, stereo_tlv),
481 SOC_SINGLE_EXT_TLV("Amp Mono Playback Volume", LM4857_MVOL, 0, 31, 0,
482 lm4857_get_reg, lm4857_set_reg, mono_tlv),
483 SOC_ENUM_EXT("Amp Mode", lm4857_mode_enum[0],
484 lm4857_get_mode, lm4857_set_mode),
485 SOC_ENUM_EXT("Neo Mode", neo_scenario_enum[0],
486 neo1973_get_scenario, neo1973_set_scenario),
487 SOC_SINGLE_EXT("Amp Spk 3D Playback Switch", LM4857_LVOL, 5, 1, 0,
488 lm4857_get_reg, lm4857_set_reg),
489 SOC_SINGLE_EXT("Amp HP 3d Playback Switch", LM4857_RVOL, 5, 1, 0,
490 lm4857_get_reg, lm4857_set_reg),
491 SOC_SINGLE_EXT("Amp Fast Wakeup Playback Switch", LM4857_CTRL, 5, 1, 0,
492 lm4857_get_reg, lm4857_set_reg),
493 SOC_SINGLE_EXT("Amp Earpiece 6dB Playback Switch", LM4857_CTRL, 4, 1, 0,
494 lm4857_get_reg, lm4857_set_reg),
495};
496
497/*
498 * This is an example machine initialisation for a wm8753 connected to a
499 * neo1973 II. It is missing logic to detect hp/mic insertions and logic
500 * to re-route the audio in such an event.
501 */
502static int neo1973_wm8753_init(struct snd_soc_codec *codec)
503{
504 int err;
505
506 pr_debug("Entered %s\n", __func__);
507
508 /* set up NC codec pins */
509 snd_soc_dapm_nc_pin(codec, "LOUT2");
510 snd_soc_dapm_nc_pin(codec, "ROUT2");
511 snd_soc_dapm_nc_pin(codec, "OUT3");
512 snd_soc_dapm_nc_pin(codec, "OUT4");
513 snd_soc_dapm_nc_pin(codec, "LINE1");
514 snd_soc_dapm_nc_pin(codec, "LINE2");
515
516 /* Add neo1973 specific widgets */
517 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
518 ARRAY_SIZE(wm8753_dapm_widgets));
519
520 /* set endpoints to default mode */
521 set_scenario_endpoints(codec, NEO_AUDIO_OFF);
522
523 /* add neo1973 specific controls */
524 err = snd_soc_add_controls(codec, wm8753_neo1973_controls,
525 ARRAY_SIZE(8753_neo1973_controls));
526 if (err < 0)
527 return err;
528
529 /* set up neo1973 specific audio routes */
530 err = snd_soc_dapm_add_routes(codec, dapm_routes,
531 ARRAY_SIZE(dapm_routes));
532
533 snd_soc_dapm_sync(codec);
534 return 0;
535}
536
537/*
538 * BT Codec DAI
539 */
540static struct snd_soc_dai bt_dai = {
541 .name = "Bluetooth",
542 .id = 0,
543 .playback = {
544 .channels_min = 1,
545 .channels_max = 1,
546 .rates = SNDRV_PCM_RATE_8000,
547 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
548 .capture = {
549 .channels_min = 1,
550 .channels_max = 1,
551 .rates = SNDRV_PCM_RATE_8000,
552 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
553};
554
555static struct snd_soc_dai_link neo1973_dai[] = {
556{ /* Hifi Playback - for similatious use with voice below */
557 .name = "WM8753",
558 .stream_name = "WM8753 HiFi",
559 .cpu_dai = &s3c24xx_i2s_dai,
560 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
561 .init = neo1973_wm8753_init,
562 .ops = &neo1973_hifi_ops,
563},
564{ /* Voice via BT */
565 .name = "Bluetooth",
566 .stream_name = "Voice",
567 .cpu_dai = &bt_dai,
568 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
569 .ops = &neo1973_voice_ops,
570},
571};
572
573static struct snd_soc_card neo1973 = {
574 .name = "neo1973",
575 .platform = &s3c24xx_soc_platform,
576 .dai_link = neo1973_dai,
577 .num_links = ARRAY_SIZE(neo1973_dai),
578};
579
580static struct snd_soc_device neo1973_snd_devdata = {
581 .card = &neo1973,
582 .codec_dev = &soc_codec_dev_wm8753,
583};
584
585static int lm4857_i2c_probe(struct i2c_client *client,
586 const struct i2c_device_id *id)
587{
588 pr_debug("Entered %s\n", __func__);
589
590 i2c = client;
591
592 lm4857_write_regs();
593 return 0;
594}
595
596static int lm4857_i2c_remove(struct i2c_client *client)
597{
598 pr_debug("Entered %s\n", __func__);
599
600 i2c = NULL;
601
602 return 0;
603}
604
605static u8 lm4857_state;
606
607static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
608{
609 pr_debug("Entered %s\n", __func__);
610
611 dev_dbg(&dev->dev, "lm4857_suspend\n");
612 lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
613 if (lm4857_state) {
614 lm4857_regs[LM4857_CTRL] &= 0xf0;
615 lm4857_write_regs();
616 }
617 return 0;
618}
619
620static int lm4857_resume(struct i2c_client *dev)
621{
622 pr_debug("Entered %s\n", __func__);
623
624 if (lm4857_state) {
625 lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
626 lm4857_write_regs();
627 }
628 return 0;
629}
630
631static void lm4857_shutdown(struct i2c_client *dev)
632{
633 pr_debug("Entered %s\n", __func__);
634
635 dev_dbg(&dev->dev, "lm4857_shutdown\n");
636 lm4857_regs[LM4857_CTRL] &= 0xf0;
637 lm4857_write_regs();
638}
639
640static const struct i2c_device_id lm4857_i2c_id[] = {
641 { "neo1973_lm4857", 0 },
642 { }
643};
644
645static struct i2c_driver lm4857_i2c_driver = {
646 .driver = {
647 .name = "LM4857 I2C Amp",
648 .owner = THIS_MODULE,
649 },
650 .suspend = lm4857_suspend,
651 .resume = lm4857_resume,
652 .shutdown = lm4857_shutdown,
653 .probe = lm4857_i2c_probe,
654 .remove = lm4857_i2c_remove,
655 .id_table = lm4857_i2c_id,
656};
657
658static struct platform_device *neo1973_snd_device;
659
660static int __init neo1973_init(void)
661{
662 int ret;
663
664 pr_debug("Entered %s\n", __func__);
665
666 if (!machine_is_neo1973_gta01()) {
667 printk(KERN_INFO
668 "Only GTA01 hardware supported by ASoC driver\n");
669 return -ENODEV;
670 }
671
672 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
673 if (!neo1973_snd_device)
674 return -ENOMEM;
675
676 platform_set_drvdata(neo1973_snd_device, &neo1973_snd_devdata);
677 neo1973_snd_devdata.dev = &neo1973_snd_device->dev;
678 ret = platform_device_add(neo1973_snd_device);
679
680 if (ret) {
681 platform_device_put(neo1973_snd_device);
682 return ret;
683 }
684
685 ret = i2c_add_driver(&lm4857_i2c_driver);
686
687 if (ret != 0)
688 platform_device_unregister(neo1973_snd_device);
689
690 return ret;
691}
692
693static void __exit neo1973_exit(void)
694{
695 pr_debug("Entered %s\n", __func__);
696
697 i2c_del_driver(&lm4857_i2c_driver);
698 platform_device_unregister(neo1973_snd_device);
699}
700
701module_init(neo1973_init);
702module_exit(neo1973_exit);
703
704/* Module information */
705MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
706MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
707MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-09 10:32:13 -0400