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.
14 * 20th Jan 2007 Initial version.
15 * 05th Feb 2007 Rename all to Neo1973
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>
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>
39 #include <asm/arch/spi-gpio.h>
40 #include "../codecs/wm8753.h"
42 #include "s3c24xx-pcm.h"
43 #include "s3c24xx-i2s.h"
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
56 static struct snd_soc_machine neo1973;
57 static struct i2c_client *i2c;
59 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
60 struct snd_pcm_hw_params *params)
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;
67 unsigned long iis_clkrate;
69 iis_clkrate = s3c24xx_i2s_get_clockrate();
71 switch (params_rate(params)) {
77 bclk = WM8753_BCLK_DIV_4;
81 bclk = WM8753_BCLK_DIV_2;
85 bclk = WM8753_BCLK_DIV_16;
89 bclk = WM8753_BCLK_DIV_8;
93 bclk = WM8753_BCLK_DIV_4;
97 bclk = WM8753_BCLK_DIV_2;
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);
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);
116 /* set the codec system clock for DAC and ADC */
117 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_MCLK, pll_out,
122 /* set MCLK division for sample rate */
123 ret = cpu_dai->dai_ops.set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
124 S3C2410_IISMOD_32FS );
128 /* set codec BCLK division for sample rate */
129 ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
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));
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);
148 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
150 struct snd_soc_pcm_runtime *rtd = substream->private_data;
151 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
153 /* disable the PLL */
154 return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL1, 0, 0);
158 * Neo1973 WM8753 HiFi DAI opserations.
160 static struct snd_soc_ops neo1973_hifi_ops = {
161 .hw_params = neo1973_hifi_hw_params,
162 .hw_free = neo1973_hifi_hw_free,
165 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
166 struct snd_pcm_hw_params *params)
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;
172 unsigned long iis_clkrate;
174 iis_clkrate = s3c24xx_i2s_get_clockrate();
176 if (params_rate(params) != 8000)
178 if (params_channels(params) != 1)
181 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
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);
190 /* set the codec system clock for DAC and ADC */
191 ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
196 /* set codec PCM division for sample rate */
197 ret = codec_dai->dai_ops.set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
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);
210 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
212 struct snd_soc_pcm_runtime *rtd = substream->private_data;
213 struct snd_soc_codec_dai *codec_dai = rtd->dai->codec_dai;
215 /* disable the PLL */
216 return codec_dai->dai_ops.set_pll(codec_dai, WM8753_PLL2, 0, 0);
219 static struct snd_soc_ops neo1973_voice_ops = {
220 .hw_params = neo1973_voice_hw_params,
221 .hw_free = neo1973_voice_hw_free,
224 static int neo1973_scenario = 0;
226 static int neo1973_get_scenario(struct snd_kcontrol *kcontrol,
227 struct snd_ctl_elem_value *ucontrol)
229 ucontrol->value.integer.value[0] = neo1973_scenario;
233 static int set_scenario_endpoints(struct snd_soc_codec *codec, int scenario)
235 switch(neo1973_scenario) {
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);
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);
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);
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);
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);
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);
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);
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);
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);
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);
307 snd_soc_dapm_sync_endpoints(codec);
312 static int neo1973_set_scenario(struct snd_kcontrol *kcontrol,
313 struct snd_ctl_elem_value *ucontrol)
315 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
317 if (neo1973_scenario == ucontrol->value.integer.value[0])
320 neo1973_scenario = ucontrol->value.integer.value[0];
321 set_scenario_endpoints(codec, neo1973_scenario);
325 static u8 lm4857_regs[4] = {0x00, 0x40, 0x80, 0xC0};
327 static void lm4857_write_regs(void)
329 if (i2c_master_send(i2c, lm4857_regs, 4) != 4)
330 printk(KERN_ERR "lm4857: i2c write failed\n");
333 static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
334 struct snd_ctl_elem_value *ucontrol)
336 int reg=kcontrol->private_value & 0xFF;
337 int shift = (kcontrol->private_value >> 8) & 0x0F;
338 int mask = (kcontrol->private_value >> 16) & 0xFF;
340 ucontrol->value.integer.value[0] = (lm4857_regs[reg] >> shift) & mask;
344 static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
345 struct snd_ctl_elem_value *ucontrol)
347 int reg = kcontrol->private_value & 0xFF;
348 int shift = (kcontrol->private_value >> 8) & 0x0F;
349 int mask = (kcontrol->private_value >> 16) & 0xFF;
351 if (((lm4857_regs[reg] >> shift ) & mask) ==
352 ucontrol->value.integer.value[0])
355 lm4857_regs[reg] &= ~ (mask << shift);
356 lm4857_regs[reg] |= ucontrol->value.integer.value[0] << shift;
361 static int lm4857_get_mode(struct snd_kcontrol *kcontrol,
362 struct snd_ctl_elem_value *ucontrol)
364 u8 value = lm4857_regs[LM4857_CTRL] & 0x0F;
369 ucontrol->value.integer.value[0] = value;
373 static int lm4857_set_mode(struct snd_kcontrol *kcontrol,
374 struct snd_ctl_elem_value *ucontrol)
376 u8 value = ucontrol->value.integer.value[0];
381 if ((lm4857_regs[LM4857_CTRL] & 0x0F) == value)
384 lm4857_regs[LM4857_CTRL] &= 0xF0;
385 lm4857_regs[LM4857_CTRL] |= value;
390 static 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),
399 /* example machine audio_mapnections */
400 static const char* audio_map[][3] = {
402 /* Connections to the lm4857 amp */
403 {"Audio Out", NULL, "LOUT1"},
404 {"Audio Out", NULL, "ROUT1"},
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"},
412 /* Connections to Headset */
413 {"MIC1", NULL, "Mic Bias"},
414 {"Mic Bias", NULL, "Headset Mic"},
417 {"MIC2", NULL, "Mic Bias"},
418 {"MIC2N", NULL, "Mic Bias"},
419 {"Mic Bias", NULL, "Call Mic"},
421 /* Connect the ALC pins */
422 {"ACIN", NULL, "ACOP"},
427 static const char *lm4857_mode[] = {
431 "Stereo Speakers + Headphones",
435 static const struct soc_enum lm4857_mode_enum[] = {
436 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(lm4857_mode), lm4857_mode),
439 static const char *neo_scenarios[] = {
451 static const struct soc_enum neo_scenario_enum[] = {
452 SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(neo_scenarios),neo_scenarios),
455 static 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),
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.
481 static int neo1973_wm8753_init(struct snd_soc_codec *codec)
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);
494 /* set endpoints to default mode */
495 set_scenario_endpoints(codec, NEO_AUDIO_OFF);
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]);
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],
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]);
516 snd_soc_dapm_sync_endpoints(codec);
523 static struct snd_soc_cpu_dai bt_dai =
524 { .name = "Bluetooth",
526 .type = SND_SOC_DAI_PCM,
530 .rates = SNDRV_PCM_RATE_8000,
531 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
535 .rates = SNDRV_PCM_RATE_8000,
536 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
539 static struct snd_soc_dai_link neo1973_dai[] = {
540 { /* Hifi Playback - for similatious use with voice below */
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,
550 .stream_name = "Voice",
552 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
553 .ops = &neo1973_voice_ops,
557 static struct snd_soc_machine neo1973 = {
559 .dai_link = neo1973_dai,
560 .num_links = ARRAY_SIZE(neo1973_dai),
563 static struct wm8753_setup_data neo1973_wm8753_setup = {
567 static struct snd_soc_device neo1973_snd_devdata = {
569 .platform = &s3c24xx_soc_platform,
570 .codec_dev = &soc_codec_dev_wm8753,
571 .codec_data = &neo1973_wm8753_setup,
574 static struct i2c_client client_template;
576 static unsigned short normal_i2c[] = { 0x7C, I2C_CLIENT_END };
578 /* Magic definition of all other variables and things */
581 static int lm4857_amp_probe(struct i2c_adapter *adap, int addr, int kind)
585 client_template.adapter = adap;
586 client_template.addr = addr;
588 i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
592 ret = i2c_attach_client(i2c);
594 printk(KERN_ERR "LM4857 failed to attach at addr %x\n", addr);
606 static int lm4857_i2c_detach(struct i2c_client *client)
608 i2c_detach_client(client);
613 static int lm4857_i2c_attach(struct i2c_adapter *adap)
615 return i2c_probe(adap, &addr_data, lm4857_amp_probe);
618 /* corgi i2c codec control layer */
619 static struct i2c_driver lm4857_i2c_driver = {
621 .name = "LM4857 I2C Amp",
622 .owner = THIS_MODULE,
624 .id = I2C_DRIVERID_LM4857,
625 .attach_adapter = lm4857_i2c_attach,
626 .detach_client = lm4857_i2c_detach,
630 static struct i2c_client client_template = {
632 .driver = &lm4857_i2c_driver,
635 static struct platform_device *neo1973_snd_device;
637 static int __init neo1973_init(void)
641 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
642 if (!neo1973_snd_device)
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);
650 platform_device_put(neo1973_snd_device);
652 ret = i2c_add_driver(&lm4857_i2c_driver);
654 printk(KERN_ERR "can't add i2c driver");
659 static void __exit neo1973_exit(void)
661 platform_device_unregister(neo1973_snd_device);
664 module_init(neo1973_init);
665 module_exit(neo1973_exit);
667 /* Module information */
668 MODULE_AUTHOR("Graeme Gregory, graeme.gregory@wolfsonmicro.com, www.wolfsonmicro.com");
669 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
670 MODULE_LICENSE("GPL");