2 * neo1973_wm8753.c -- SoC audio for Neo1973
4 * Copyright 2007 Wolfson Microelectronics PLC.
5 * Author: Graeme Gregory
6 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
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.
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>
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>
33 #include <mach/spi-gpio.h>
35 #include <plat/regs-iis.h>
37 #include "../codecs/wm8753.h"
40 #include "s3c24xx-i2s.h"
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
53 static struct snd_soc_card neo1973;
54 static struct i2c_client *i2c;
56 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
57 struct snd_pcm_hw_params *params)
59 struct snd_soc_pcm_runtime *rtd = substream->private_data;
60 struct snd_soc_dai *codec_dai = rtd->codec_dai;
61 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
62 unsigned int pll_out = 0, bclk = 0;
64 unsigned long iis_clkrate;
66 pr_debug("Entered %s\n", __func__);
68 iis_clkrate = s3c24xx_i2s_get_clockrate();
70 switch (params_rate(params)) {
76 bclk = WM8753_BCLK_DIV_4;
80 bclk = WM8753_BCLK_DIV_2;
84 bclk = WM8753_BCLK_DIV_16;
88 bclk = WM8753_BCLK_DIV_8;
92 bclk = WM8753_BCLK_DIV_4;
96 bclk = WM8753_BCLK_DIV_2;
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);
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);
115 /* set the codec system clock for DAC and ADC */
116 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
121 /* set MCLK division for sample rate */
122 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
123 S3C2410_IISMOD_32FS);
127 /* set codec BCLK division for sample rate */
128 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
132 /* set prescaler division for sample rate */
133 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
134 S3C24XX_PRESCALE(4, 4));
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);
147 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
149 struct snd_soc_pcm_runtime *rtd = substream->private_data;
150 struct snd_soc_dai *codec_dai = rtd->codec_dai;
152 pr_debug("Entered %s\n", __func__);
154 /* disable the PLL */
155 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
159 * Neo1973 WM8753 HiFi DAI opserations.
161 static struct snd_soc_ops neo1973_hifi_ops = {
162 .hw_params = neo1973_hifi_hw_params,
163 .hw_free = neo1973_hifi_hw_free,
166 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
167 struct snd_pcm_hw_params *params)
169 struct snd_soc_pcm_runtime *rtd = substream->private_data;
170 struct snd_soc_dai *codec_dai = rtd->codec_dai;
171 unsigned int pcmdiv = 0;
173 unsigned long iis_clkrate;
175 pr_debug("Entered %s\n", __func__);
177 iis_clkrate = s3c24xx_i2s_get_clockrate();
179 if (params_rate(params) != 8000)
181 if (params_channels(params) != 1)
184 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
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);
193 /* set the codec system clock for DAC and ADC */
194 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
199 /* set codec PCM division for sample rate */
200 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
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);
213 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
215 struct snd_soc_pcm_runtime *rtd = substream->private_data;
216 struct snd_soc_dai *codec_dai = rtd->codec_dai;
218 pr_debug("Entered %s\n", __func__);
220 /* disable the PLL */
221 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
224 static struct snd_soc_ops neo1973_voice_ops = {
225 .hw_params = neo1973_voice_hw_params,
226 .hw_free = neo1973_voice_hw_free,
229 static int neo1973_scenario;
231 static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
232 struct snd_ctl_elem_value *ucontrol)
234 ucontrol->value.integer.value[0] = neo1973_scenario;
238 static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
240 pr_debug("Entered %s\n", __func__);
242 switch (neo1973_scenario) {
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");
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");
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");
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");
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");
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");
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");
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");
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");
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");
314 snd_soc_dapm_sync(codec);
319 static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
320 struct snd_ctl_elem_value *ucontrol)
322 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
324 pr_debug("Entered %s\n", __func__);
326 if (neo1973_scenario == ucontrol->value.integer.value[0])
329 neo1973_scenario = ucontrol->value.integer.value[0];
330 set_scenario_endpoints(codec, neo1973_scenario);
334 static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
336 static void lm4857_write_regs(void)
338 pr_debug("Entered %s\n", __func__);
340 if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
341 printk(KERN_ERR "lm4857: i2c write failed\n");
344 static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
345 struct snd_ctl_elem_value *ucontrol)
347 struct soc_mixer_control *mc =
348 (struct soc_mixer_control *)kcontrol->private_value;
350 int shift = mc->shift;
353 pr_debug("Entered %s\n", __func__);
355 ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
359 static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
360 struct snd_ctl_elem_value *ucontrol)
362 struct soc_mixer_control *mc =
363 (struct soc_mixer_control *)kcontrol->private_value;
365 int shift = mc->shift;
368 if (((lm4857_regs[reg] >> shift) & mask) ==
369 ucontrol->value.integer.value[0])
372 lm4857_regs[reg] &= ~(mask << shift);
373 lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
378 static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
379 struct snd_ctl_elem_value *ucontrol)
381 u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
383 pr_debug("Entered %s\n", __func__);
388 ucontrol->value.integer.value[0] = value;
392 static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
393 struct snd_ctl_elem_value *ucontrol)
395 u8 value = ucontrol->value.integer.value[0];
397 pr_debug("Entered %s\n", __func__);
402 if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
405 lm4857_regs[LM4857_CTRL] &= 0xF0;
406 lm4857_regs[LM4857_CTRL] |= value;
411 static 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),
420 static const struct snd_soc_dapm_route dapm_routes[] = {
422 /* Connections to the lm4857 amp */
423 {"Audio Out", NULL, "LOUT1"},
424 {"Audio Out", NULL, "ROUT1"},
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"},
432 /* Connections to Headset */
433 {"MIC1", NULL, "Mic Bias"},
434 {"Mic Bias", NULL, "Headset Mic"},
437 {"MIC2", NULL, "Mic Bias"},
438 {"MIC2N", NULL, "Mic Bias"},
439 {"Mic Bias", NULL, "Call Mic"},
441 /* Connect the ALC pins */
442 {"ACIN", NULL, "ACOP"},
445 static const char *lm4857_mode[] = {
449 "Stereo Speakers + Headphones",
453 static const struct soc_enum lm4857_mode_enum[] = {
454 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
457 static const char *neo_scenarios[] = {
469 static const struct soc_enum neo_scenario_enum[] = {
470 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios), neo_scenarios),
473 static const DECLARE_TLV_DB_SCALE(stereo_tlv, -4050, 150, 0);
474 static const DECLARE_TLV_DB_SCALE(mono_tlv, -3450, 150, 0);
476 static 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),
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.
502 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
504 struct snd_soc_codec *codec = rtd->codec;
507 pr_debug("Entered %s\n", __func__);
509 /* set up NC codec pins */
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");
517 /* Add neo1973 specific widgets */
518 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
519 ARRAY_SIZE(wm8753_dapm_widgets));
521 /* set endpoints to default mode */
522 set_scenario_endpoints(codec, NEO_AUDIO_OFF);
524 /* add neo1973 specific controls */
525 err = snd_soc_add_controls(codec, wm8753_neo1973_controls,
526 ARRAY_SIZE(8753_neo1973_controls));
530 /* set up neo1973 specific audio routes */
531 err = snd_soc_dapm_add_routes(codec, dapm_routes,
532 ARRAY_SIZE(dapm_routes));
534 snd_soc_dapm_sync(codec);
541 static struct snd_soc_dai bt_dai = {
542 .name = "bluetooth-dai",
546 .rates = SNDRV_PCM_RATE_8000,
547 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
551 .rates = SNDRV_PCM_RATE_8000,
552 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
555 static struct snd_soc_dai_link neo1973_dai[] = {
556 { /* Hifi Playback - for similatious use with voice below */
558 .stream_name = "WM8753 HiFi",
559 .platform_name = "s3c24xx-pcm-audio",
560 .cpu_dai_name = "s3c24xx-i2s",
561 .codec_dai_name = "wm8753-hifi",
562 .codec_name = "wm8753-codec.0-0x1a",
563 .init = neo1973_wm8753_init,
564 .ops = &neo1973_hifi_ops,
568 .stream_name = "Voice",
569 .platform_name = "s3c24xx-pcm-audio",
570 .cpu_dai_name = "bluetooth-dai",
571 .codec_dai_name = "wm8753-voice",
572 .codec_name = "wm8753-codec.0-0x1a",
573 .ops = &neo1973_voice_ops,
577 static struct snd_soc_card neo1973 = {
579 .dai_link = neo1973_dai,
580 .num_links = ARRAY_SIZE(neo1973_dai),
583 static int lm4857_i2c_probe(struct i2c_client *client,
584 const struct i2c_device_id *id)
586 pr_debug("Entered %s\n", __func__);
594 static int lm4857_i2c_remove(struct i2c_client *client)
596 pr_debug("Entered %s\n", __func__);
603 static u8 lm4857_state;
605 static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
607 pr_debug("Entered %s\n", __func__);
609 dev_dbg(&dev->dev, "lm4857_suspend\n");
610 lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
612 lm4857_regs[LM4857_CTRL] &= 0xf0;
618 static int lm4857_resume(struct i2c_client *dev)
620 pr_debug("Entered %s\n", __func__);
623 lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
629 static void lm4857_shutdown(struct i2c_client *dev)
631 pr_debug("Entered %s\n", __func__);
633 dev_dbg(&dev->dev, "lm4857_shutdown\n");
634 lm4857_regs[LM4857_CTRL] &= 0xf0;
638 static const struct i2c_device_id lm4857_i2c_id[] = {
639 { "neo1973_lm4857", 0 },
643 static struct i2c_driver lm4857_i2c_driver = {
645 .name = "LM4857 I2C Amp",
646 .owner = THIS_MODULE,
648 .suspend = lm4857_suspend,
649 .resume = lm4857_resume,
650 .shutdown = lm4857_shutdown,
651 .probe = lm4857_i2c_probe,
652 .remove = lm4857_i2c_remove,
653 .id_table = lm4857_i2c_id,
656 static struct platform_device *neo1973_snd_device;
658 static int __init neo1973_init(void)
662 pr_debug("Entered %s\n", __func__);
664 if (!machine_is_neo1973_gta01()) {
666 "Only GTA01 hardware supported by ASoC driver\n");
670 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
671 if (!neo1973_snd_device)
674 platform_set_drvdata(neo1973_snd_device, &neo1973);
675 ret = platform_device_add(neo1973_snd_device);
678 platform_device_put(neo1973_snd_device);
682 ret = i2c_add_driver(&lm4857_i2c_driver);
685 platform_device_unregister(neo1973_snd_device);
690 static void __exit neo1973_exit(void)
692 pr_debug("Entered %s\n", __func__);
694 i2c_del_driver(&lm4857_i2c_driver);
695 platform_device_unregister(neo1973_snd_device);
698 module_init(neo1973_init);
699 module_exit(neo1973_exit);
701 /* Module information */
702 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
703 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
704 MODULE_LICENSE("GPL");