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OpenCloudOS-Kernel/sound/soc/s3c24xx/smartq_wm8987.c

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/* sound/soc/s3c24xx/smartq_wm8987.c
*
* Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
*
* Based on smdk6410_wm8987.c
* Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
* Graeme Gregory - graeme.gregory@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/platform_device.h>
#include <linux/gpio.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc-dapm.h>
#include <sound/jack.h>
#include <asm/mach-types.h>
#include "s3c-dma.h"
#include "s3c64xx-i2s.h"
#include "../codecs/wm8750.h"
/*
* WM8987 is register compatible with WM8750, so using that as base driver.
*/
static struct snd_soc_card snd_soc_smartq;
static int smartq_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->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct s3c_i2sv2_rate_calc div;
unsigned int clk = 0;
int ret;
s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
s3c_i2sv2_get_clock(cpu_dai));
switch (params_rate(params)) {
case 8000:
case 16000:
case 32000:
case 48000:
case 96000:
clk = 12288000;
break;
case 11025:
case 22050:
case 44100:
case 88200:
clk = 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_CBS_CFS);
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_CBS_CFS);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set MCLK division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, div.fs_div);
if (ret < 0)
return ret;
/* set prescaler division for sample rate */
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_PRESCALER,
div.clk_div - 1);
if (ret < 0)
return ret;
return 0;
}
/*
* SmartQ WM8987 HiFi DAI operations.
*/
static struct snd_soc_ops smartq_hifi_ops = {
.hw_params = smartq_hifi_hw_params,
};
static struct snd_soc_jack smartq_jack;
static struct snd_soc_jack_pin smartq_jack_pins[] = {
/* Disable speaker when headphone is plugged in */
{
.pin = "Internal Speaker",
.mask = SND_JACK_HEADPHONE,
},
};
static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
{
.gpio = S3C64XX_GPL(12),
.name = "headphone detect",
.report = SND_JACK_HEADPHONE,
.debounce_time = 200,
},
};
static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
SOC_DAPM_PIN_SWITCH("Internal Speaker"),
SOC_DAPM_PIN_SWITCH("Headphone Jack"),
SOC_DAPM_PIN_SWITCH("Internal Mic"),
};
static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k,
int event)
{
gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
return 0;
}
static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Internal Mic", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Headphone Jack", NULL, "LOUT2"},
{"Headphone Jack", NULL, "ROUT2"},
{"Internal Speaker", NULL, "LOUT2"},
{"Internal Speaker", NULL, "ROUT2"},
{"Mic Bias", NULL, "Internal Mic"},
{"LINPUT2", NULL, "Mic Bias"},
};
static int smartq_wm8987_init(struct snd_soc_codec *codec)
{
int err = 0;
/* Add SmartQ specific widgets */
snd_soc_dapm_new_controls(codec, wm8987_dapm_widgets,
ARRAY_SIZE(wm8987_dapm_widgets));
/* add SmartQ specific controls */
err = snd_soc_add_controls(codec, wm8987_smartq_controls,
ARRAY_SIZE(wm8987_smartq_controls));
if (err < 0)
return err;
/* setup SmartQ specific audio path */
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
/* set endpoints to not connected */
snd_soc_dapm_nc_pin(codec, "LINPUT1");
snd_soc_dapm_nc_pin(codec, "RINPUT1");
snd_soc_dapm_nc_pin(codec, "OUT3");
snd_soc_dapm_nc_pin(codec, "ROUT1");
/* set endpoints to default off mode */
snd_soc_dapm_enable_pin(codec, "Internal Speaker");
snd_soc_dapm_enable_pin(codec, "Internal Mic");
snd_soc_dapm_disable_pin(codec, "Headphone Jack");
err = snd_soc_dapm_sync(codec);
if (err)
return err;
/* Headphone jack detection */
err = snd_soc_jack_new(&snd_soc_smartq, "Headphone Jack",
SND_JACK_HEADPHONE, &smartq_jack);
if (err)
return err;
err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
smartq_jack_pins);
if (err)
return err;
err = snd_soc_jack_add_gpios(&smartq_jack,
ARRAY_SIZE(smartq_jack_gpios),
smartq_jack_gpios);
return err;
}
static struct snd_soc_dai_link smartq_dai[] = {
{
.name = "wm8987",
.stream_name = "SmartQ Hi-Fi",
.cpu_dai = &s3c64xx_i2s_dai[0],
.codec_dai = &wm8750_dai,
.init = smartq_wm8987_init,
.ops = &smartq_hifi_ops,
},
};
static struct snd_soc_card snd_soc_smartq = {
.name = "SmartQ",
.platform = &s3c24xx_soc_platform,
.dai_link = smartq_dai,
.num_links = ARRAY_SIZE(smartq_dai),
};
static struct snd_soc_device smartq_snd_devdata = {
.card = &snd_soc_smartq,
.codec_dev = &soc_codec_dev_wm8750,
};
static struct platform_device *smartq_snd_device;
static int __init smartq_init(void)
{
int ret;
if (!machine_is_smartq7() && !machine_is_smartq5()) {
pr_info("Only SmartQ is supported by this ASoC driver\n");
return -ENODEV;
}
smartq_snd_device = platform_device_alloc("soc-audio", -1);
if (!smartq_snd_device)
return -ENOMEM;
platform_set_drvdata(smartq_snd_device, &smartq_snd_devdata);
smartq_snd_devdata.dev = &smartq_snd_device->dev;
ret = platform_device_add(smartq_snd_device);
if (ret) {
platform_device_put(smartq_snd_device);
return ret;
}
/* Initialise GPIOs used by amplifiers */
ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
if (ret) {
dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
goto err_unregister_device;
}
/* Disable amplifiers */
ret = gpio_direction_output(S3C64XX_GPK(12), 1);
if (ret) {
dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
goto err_free_gpio_amp_shut;
}
return 0;
err_free_gpio_amp_shut:
gpio_free(S3C64XX_GPK(12));
err_unregister_device:
platform_device_unregister(smartq_snd_device);
return ret;
}
static void __exit smartq_exit(void)
{
snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
smartq_jack_gpios);
platform_device_unregister(smartq_snd_device);
}
module_init(smartq_init);
module_exit(smartq_exit);
/* Module information */
MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
MODULE_LICENSE("GPL");
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