329 строки
8.7 KiB
C
329 строки
8.7 KiB
C
/*
|
|
* corgi.c -- SoC audio for Corgi
|
|
*
|
|
* Copyright 2005 Wolfson Microelectronics PLC.
|
|
* Copyright 2005 Openedhand Ltd.
|
|
*
|
|
* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
|
|
* Richard Purdie <richard@openedhand.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/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <mach/corgi.h>
|
|
#include <mach/audio.h>
|
|
|
|
#include "../codecs/wm8731.h"
|
|
#include "pxa2xx-i2s.h"
|
|
|
|
#define CORGI_HP 0
|
|
#define CORGI_MIC 1
|
|
#define CORGI_LINE 2
|
|
#define CORGI_HEADSET 3
|
|
#define CORGI_HP_OFF 4
|
|
#define CORGI_SPK_ON 0
|
|
#define CORGI_SPK_OFF 1
|
|
|
|
/* audio clock in Hz - rounded from 12.235MHz */
|
|
#define CORGI_AUDIO_CLOCK 12288000
|
|
|
|
static int corgi_jack_func;
|
|
static int corgi_spk_func;
|
|
|
|
static void corgi_ext_control(struct snd_soc_dapm_context *dapm)
|
|
{
|
|
snd_soc_dapm_mutex_lock(dapm);
|
|
|
|
/* set up jack connection */
|
|
switch (corgi_jack_func) {
|
|
case CORGI_HP:
|
|
/* set = unmute headphone */
|
|
gpio_set_value(CORGI_GPIO_MUTE_L, 1);
|
|
gpio_set_value(CORGI_GPIO_MUTE_R, 1);
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
|
|
snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
|
|
break;
|
|
case CORGI_MIC:
|
|
/* reset = mute headphone */
|
|
gpio_set_value(CORGI_GPIO_MUTE_L, 0);
|
|
gpio_set_value(CORGI_GPIO_MUTE_R, 0);
|
|
snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
|
|
break;
|
|
case CORGI_LINE:
|
|
gpio_set_value(CORGI_GPIO_MUTE_L, 0);
|
|
gpio_set_value(CORGI_GPIO_MUTE_R, 0);
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Mic Jack");
|
|
snd_soc_dapm_enable_pin_unlocked(dapm, "Line Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Headset Jack");
|
|
break;
|
|
case CORGI_HEADSET:
|
|
gpio_set_value(CORGI_GPIO_MUTE_L, 0);
|
|
gpio_set_value(CORGI_GPIO_MUTE_R, 1);
|
|
snd_soc_dapm_enable_pin_unlocked(dapm, "Mic Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Line Jack");
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
|
|
snd_soc_dapm_enable_pin_unlocked(dapm, "Headset Jack");
|
|
break;
|
|
}
|
|
|
|
if (corgi_spk_func == CORGI_SPK_ON)
|
|
snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
|
|
else
|
|
snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
|
|
|
|
/* signal a DAPM event */
|
|
snd_soc_dapm_sync_unlocked(dapm);
|
|
|
|
snd_soc_dapm_mutex_unlock(dapm);
|
|
}
|
|
|
|
static int corgi_startup(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
|
|
/* check the jack status at stream startup */
|
|
corgi_ext_control(&rtd->card->dapm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* we need to unmute the HP at shutdown as the mute burns power on corgi */
|
|
static void corgi_shutdown(struct snd_pcm_substream *substream)
|
|
{
|
|
/* set = unmute headphone */
|
|
gpio_set_value(CORGI_GPIO_MUTE_L, 1);
|
|
gpio_set_value(CORGI_GPIO_MUTE_R, 1);
|
|
}
|
|
|
|
static int corgi_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 clk = 0;
|
|
int ret = 0;
|
|
|
|
switch (params_rate(params)) {
|
|
case 8000:
|
|
case 16000:
|
|
case 48000:
|
|
case 96000:
|
|
clk = 12288000;
|
|
break;
|
|
case 11025:
|
|
case 22050:
|
|
case 44100:
|
|
clk = 11289600;
|
|
break;
|
|
}
|
|
|
|
/* set the codec system clock for DAC and ADC */
|
|
ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set the I2S system clock as input (unused) */
|
|
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_ops corgi_ops = {
|
|
.startup = corgi_startup,
|
|
.hw_params = corgi_hw_params,
|
|
.shutdown = corgi_shutdown,
|
|
};
|
|
|
|
static int corgi_get_jack(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
ucontrol->value.integer.value[0] = corgi_jack_func;
|
|
return 0;
|
|
}
|
|
|
|
static int corgi_set_jack(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
|
|
|
|
if (corgi_jack_func == ucontrol->value.integer.value[0])
|
|
return 0;
|
|
|
|
corgi_jack_func = ucontrol->value.integer.value[0];
|
|
corgi_ext_control(&card->dapm);
|
|
return 1;
|
|
}
|
|
|
|
static int corgi_get_spk(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
ucontrol->value.integer.value[0] = corgi_spk_func;
|
|
return 0;
|
|
}
|
|
|
|
static int corgi_set_spk(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
|
|
|
|
if (corgi_spk_func == ucontrol->value.integer.value[0])
|
|
return 0;
|
|
|
|
corgi_spk_func = ucontrol->value.integer.value[0];
|
|
corgi_ext_control(&card->dapm);
|
|
return 1;
|
|
}
|
|
|
|
static int corgi_amp_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *k, int event)
|
|
{
|
|
gpio_set_value(CORGI_GPIO_APM_ON, SND_SOC_DAPM_EVENT_ON(event));
|
|
return 0;
|
|
}
|
|
|
|
static int corgi_mic_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *k, int event)
|
|
{
|
|
gpio_set_value(CORGI_GPIO_MIC_BIAS, SND_SOC_DAPM_EVENT_ON(event));
|
|
return 0;
|
|
}
|
|
|
|
/* corgi machine dapm widgets */
|
|
static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone Jack", NULL),
|
|
SND_SOC_DAPM_MIC("Mic Jack", corgi_mic_event),
|
|
SND_SOC_DAPM_SPK("Ext Spk", corgi_amp_event),
|
|
SND_SOC_DAPM_LINE("Line Jack", NULL),
|
|
SND_SOC_DAPM_HP("Headset Jack", NULL),
|
|
};
|
|
|
|
/* Corgi machine audio map (connections to the codec pins) */
|
|
static const struct snd_soc_dapm_route corgi_audio_map[] = {
|
|
|
|
/* headset Jack - in = micin, out = LHPOUT*/
|
|
{"Headset Jack", NULL, "LHPOUT"},
|
|
|
|
/* headphone connected to LHPOUT1, RHPOUT1 */
|
|
{"Headphone Jack", NULL, "LHPOUT"},
|
|
{"Headphone Jack", NULL, "RHPOUT"},
|
|
|
|
/* speaker connected to LOUT, ROUT */
|
|
{"Ext Spk", NULL, "ROUT"},
|
|
{"Ext Spk", NULL, "LOUT"},
|
|
|
|
/* mic is connected to MICIN (via right channel of headphone jack) */
|
|
{"MICIN", NULL, "Mic Jack"},
|
|
|
|
/* Same as the above but no mic bias for line signals */
|
|
{"MICIN", NULL, "Line Jack"},
|
|
};
|
|
|
|
static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
|
|
"Off"};
|
|
static const char *spk_function[] = {"On", "Off"};
|
|
static const struct soc_enum corgi_enum[] = {
|
|
SOC_ENUM_SINGLE_EXT(5, jack_function),
|
|
SOC_ENUM_SINGLE_EXT(2, spk_function),
|
|
};
|
|
|
|
static const struct snd_kcontrol_new wm8731_corgi_controls[] = {
|
|
SOC_ENUM_EXT("Jack Function", corgi_enum[0], corgi_get_jack,
|
|
corgi_set_jack),
|
|
SOC_ENUM_EXT("Speaker Function", corgi_enum[1], corgi_get_spk,
|
|
corgi_set_spk),
|
|
};
|
|
|
|
/* corgi digital audio interface glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link corgi_dai = {
|
|
.name = "WM8731",
|
|
.stream_name = "WM8731",
|
|
.cpu_dai_name = "pxa2xx-i2s",
|
|
.codec_dai_name = "wm8731-hifi",
|
|
.platform_name = "pxa-pcm-audio",
|
|
.codec_name = "wm8731.0-001b",
|
|
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBS_CFS,
|
|
.ops = &corgi_ops,
|
|
};
|
|
|
|
/* corgi audio machine driver */
|
|
static struct snd_soc_card corgi = {
|
|
.name = "Corgi",
|
|
.owner = THIS_MODULE,
|
|
.dai_link = &corgi_dai,
|
|
.num_links = 1,
|
|
|
|
.controls = wm8731_corgi_controls,
|
|
.num_controls = ARRAY_SIZE(wm8731_corgi_controls),
|
|
.dapm_widgets = wm8731_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
|
|
.dapm_routes = corgi_audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(corgi_audio_map),
|
|
.fully_routed = true,
|
|
};
|
|
|
|
static int corgi_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = &corgi;
|
|
int ret;
|
|
|
|
card->dev = &pdev->dev;
|
|
|
|
ret = snd_soc_register_card(card);
|
|
if (ret)
|
|
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
static int corgi_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_card *card = platform_get_drvdata(pdev);
|
|
|
|
snd_soc_unregister_card(card);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver corgi_driver = {
|
|
.driver = {
|
|
.name = "corgi-audio",
|
|
.pm = &snd_soc_pm_ops,
|
|
},
|
|
.probe = corgi_probe,
|
|
.remove = corgi_remove,
|
|
};
|
|
|
|
module_platform_driver(corgi_driver);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Richard Purdie");
|
|
MODULE_DESCRIPTION("ALSA SoC Corgi");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:corgi-audio");
|