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linux-stable/sound/soc/samsung/neo1973_wm8753.c
Lars-Peter Clausen 9b0a25f038 ASoC: neo1973_wm8753: Move lm4857 specefic code to its own module 
This patch moves the code for the lm4857 AMP from the neo1973_wm8753 sound
board driver to its own module.
The lm4857 is a generic AMP IC and not specific to the neo1973.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-03-07 12:19:22 +00:00

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/*
* neo1973_wm8753.c -- SoC audio for Neo1973
*
* Copyright 2007 Wolfson Microelectronics PLC.
* Author: Graeme Gregory
* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/regs-clock.h>
#include <mach/regs-gpio.h>
#include <mach/hardware.h>
#include <linux/io.h>
#include <mach/spi-gpio.h>
#include <plat/regs-iis.h>
#include "../codecs/wm8753.h"
#include "dma.h"
#include "s3c24xx-i2s.h"
static struct snd_soc_card neo1973;
static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int pll_out = 0, bclk = 0;
int ret = 0;
unsigned long iis_clkrate;
pr_debug("Entered %s\n", __func__);
iis_clkrate = s3c24xx_i2s_get_clockrate();
switch (params_rate(params)) {
case 8000:
case 16000:
pll_out = 12288000;
break;
case 48000:
bclk = WM8753_BCLK_DIV_4;
pll_out = 12288000;
break;
case 96000:
bclk = WM8753_BCLK_DIV_2;
pll_out = 12288000;
break;
case 11025:
bclk = WM8753_BCLK_DIV_16;
pll_out = 11289600;
break;
case 22050:
bclk = WM8753_BCLK_DIV_8;
pll_out = 11289600;
break;
case 44100:
bclk = WM8753_BCLK_DIV_4;
pll_out = 11289600;
break;
case 88200:
bclk = WM8753_BCLK_DIV_2;
pll_out = 11289600;
break;
}
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai,
SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai,
SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set MCLK division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
S3C2410_IISMOD_32FS);
if (ret < 0)
return ret;
/* set codec BCLK division for sample rate */
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
if (ret < 0)
return ret;
/* set prescaler division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
S3C24XX_PRESCALE(4, 4));
if (ret < 0)
return ret;
/* codec PLL input is PCLK/4 */
ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
iis_clkrate / 4, pll_out);
if (ret < 0)
return ret;
return 0;
}
static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
pr_debug("Entered %s\n", __func__);
/* disable the PLL */
return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
}
/*
* Neo1973 WM8753 HiFi DAI opserations.
*/
static struct snd_soc_ops neo1973_hifi_ops = {
.hw_params = neo1973_hifi_hw_params,
.hw_free = neo1973_hifi_hw_free,
};
static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
unsigned int pcmdiv = 0;
int ret = 0;
unsigned long iis_clkrate;
pr_debug("Entered %s\n", __func__);
iis_clkrate = s3c24xx_i2s_get_clockrate();
if (params_rate(params) != 8000)
return -EINVAL;
if (params_channels(params) != 1)
return -EINVAL;
pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
/* todo: gg check mode (DSP_B) against CSR datasheet */
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set codec PCM division for sample rate */
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
if (ret < 0)
return ret;
/* configure and enable PLL for 12.288MHz output */
ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
iis_clkrate / 4, 12288000);
if (ret < 0)
return ret;
return 0;
}
static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
pr_debug("Entered %s\n", __func__);
/* disable the PLL */
return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
}
static struct snd_soc_ops neo1973_voice_ops = {
.hw_params = neo1973_voice_hw_params,
.hw_free = neo1973_voice_hw_free,
};
static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
SND_SOC_DAPM_LINE("GSM Line Out", NULL),
SND_SOC_DAPM_LINE("GSM Line In", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Call Mic", NULL),
};
static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
/* Connections to the GSM Module */
{"GSM Line Out", NULL, "MONO1"},
{"GSM Line Out", NULL, "MONO2"},
{"RXP", NULL, "GSM Line In"},
{"RXN", NULL, "GSM Line In"},
/* Connections to Headset */
{"MIC1", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Headset Mic"},
/* Call Mic */
{"MIC2", NULL, "Mic Bias"},
{"MIC2N", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Call Mic"},
/* Connect the ALC pins */
{"ACIN", NULL, "ACOP"},
};
static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
SOC_DAPM_PIN_SWITCH("GSM Line Out"),
SOC_DAPM_PIN_SWITCH("GSM Line In"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("Call Mic"),
};
/*
* This is an example machine initialisation for a wm8753 connected to a
* neo1973 II. It is missing logic to detect hp/mic insertions and logic
* to re-route the audio in such an event.
*/
static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
int err;
pr_debug("Entered %s\n", __func__);
/* set up NC codec pins */
snd_soc_dapm_nc_pin(dapm, "LOUT2");
snd_soc_dapm_nc_pin(dapm, "ROUT2");
snd_soc_dapm_nc_pin(dapm, "OUT3");
snd_soc_dapm_nc_pin(dapm, "OUT4");
snd_soc_dapm_nc_pin(dapm, "LINE1");
snd_soc_dapm_nc_pin(dapm, "LINE2");
/* Add neo1973 specific widgets */
snd_soc_dapm_new_controls(dapm, wm8753_dapm_widgets,
ARRAY_SIZE(wm8753_dapm_widgets));
/* set endpoints to default mode */
snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
snd_soc_dapm_disable_pin(dapm, "GSM Line In");
snd_soc_dapm_disable_pin(dapm, "Headset Mic");
snd_soc_dapm_disable_pin(dapm, "Call Mic");
/* add neo1973 specific controls */
err = snd_soc_add_controls(codec, neo1973_wm8753_controls,
ARRAY_SIZE(neo1973_wm8753_controls));
if (err < 0)
return err;
/* set up neo1973 specific audio routes */
err = snd_soc_dapm_add_routes(dapm, neo1973_wm8753_routes,
ARRAY_SIZE(neo1973_wm8753_routes));
snd_soc_dapm_sync(dapm);
return 0;
}
static const struct snd_soc_dapm_route neo1973_lm4857_routes[] = {
{"Amp IN", NULL, "ROUT1"},
{"Amp IN", NULL, "LOUT1"},
{"Handset Spk", NULL, "Amp EP"},
{"Stereo Out", NULL, "Amp LS"},
{"Headphone", NULL, "Amp HP"},
};
static const struct snd_soc_dapm_widget neo1973_lm4857_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Handset Spk", NULL),
SND_SOC_DAPM_SPK("Stereo Out", NULL),
SND_SOC_DAPM_HP("Headphone", NULL),
};
static int neo1973_lm4857_init(struct snd_soc_dapm_context *dapm)
{
int ret;
ret = snd_soc_dapm_new_controls(dapm, neo1973_lm4857_dapm_widgets,
ARRAY_SIZE(neo1973_lm4857_dapm_widgets));
if (ret)
return ret;
ret = snd_soc_dapm_add_routes(dapm, neo1973_lm4857_routes,
ARRAY_SIZE(neo1973_lm4857_routes));
if (ret)
return ret;
snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
snd_soc_dapm_ignore_suspend(dapm, "Headphone");
snd_soc_dapm_sync(dapm);
return 0;
}
/*
* BT Codec DAI
*/
static struct snd_soc_dai bt_dai = {
.name = "bluetooth-dai",
.playback = {
.channels_min = 1,
.channels_max = 1,
.rates = SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
.capture = {
.channels_min = 1,
.channels_max = 1,
.rates = SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
};
static struct snd_soc_dai_link neo1973_dai[] = {
{ /* Hifi Playback - for similatious use with voice below */
.name = "WM8753",
.stream_name = "WM8753 HiFi",
.platform_name = "samsung-audio",
.cpu_dai_name = "s3c24xx-iis",
.codec_dai_name = "wm8753-hifi",
.codec_name = "wm8753-codec.0-001a",
.init = neo1973_wm8753_init,
.ops = &neo1973_hifi_ops,
},
{ /* Voice via BT */
.name = "Bluetooth",
.stream_name = "Voice",
.platform_name = "samsung-audio",
.cpu_dai_name = "bluetooth-dai",
.codec_dai_name = "wm8753-voice",
.codec_name = "wm8753-codec.0-001a",
.ops = &neo1973_voice_ops,
},
};
static struct snd_soc_aux_dev neo1973_aux_devs[] = {
{
.name = "lm4857",
.codec_name = "lm4857.0-007c",
.init = neo1973_lm4857_init,
},
};
static struct snd_soc_codec_conf neo1973_codec_conf[] = {
{
.dev_name = "lm4857.0-007c",
.name_prefix = "Amp",
},
};
static struct snd_soc_card neo1973 = {
.name = "neo1973",
.dai_link = neo1973_dai,
.num_links = ARRAY_SIZE(neo1973_dai),
.aux_dev = neo1973_aux_devs,
.num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
.codec_conf = neo1973_codec_conf,
.num_configs = ARRAY_SIZE(neo1973_codec_conf),
};
static struct platform_device *neo1973_snd_device;
static int __init neo1973_init(void)
{
int ret;
pr_debug("Entered %s\n", __func__);
if (!machine_is_neo1973_gta01()) {
printk(KERN_INFO
"Only GTA01 hardware supported by ASoC driver\n");
return -ENODEV;
}
neo1973_snd_device = platform_device_alloc("soc-audio", -1);
if (!neo1973_snd_device)
return -ENOMEM;
platform_set_drvdata(neo1973_snd_device, &neo1973);
ret = platform_device_add(neo1973_snd_device);
if (ret) {
platform_device_put(neo1973_snd_device);
return ret;
}
if (ret != 0)
platform_device_unregister(neo1973_snd_device);
return ret;
}
static void __exit neo1973_exit(void)
{
pr_debug("Entered %s\n", __func__);
platform_device_unregister(neo1973_snd_device);
}
module_init(neo1973_init);
module_exit(neo1973_exit);
/* Module information */
MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973");
MODULE_LICENSE("GPL");
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