/*
* tosa.c -- SoC audio for Tosa
*
* 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.
*
* GPIO's
* 1 - Jack Insertion
* 5 - Hookswitch (headset answer/hang up switch)
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <asm/mach-types.h>
#include <mach/tosa.h>
#include <mach/pxa-regs.h>
#include <mach/hardware.h>
#include <mach/audio.h>
#include "../codecs/wm9712.h"
#include "pxa2xx-pcm.h"
#include "pxa2xx-ac97.h"
static struct snd_soc_machine tosa;
#define TOSA_HP 0
#define TOSA_MIC_INT 1
#define TOSA_HEADSET 2
#define TOSA_HP_OFF 3
#define TOSA_SPK_ON 0
#define TOSA_SPK_OFF 1
static int tosa_jack_func;
static int tosa_spk_func;
static void tosa_ext_control(struct snd_soc_codec *codec)
{
/* set up jack connection */
switch (tosa_jack_func) {
case TOSA_HP:
snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
snd_soc_dapm_enable_pin(codec, "Headphone Jack");
snd_soc_dapm_disable_pin(codec, "Headset Jack");
break;
case TOSA_MIC_INT:
snd_soc_dapm_enable_pin(codec, "Mic (Internal)");
snd_soc_dapm_disable_pin(codec, "Headphone Jack");
snd_soc_dapm_disable_pin(codec, "Headset Jack");
break;
case TOSA_HEADSET:
snd_soc_dapm_disable_pin(codec, "Mic (Internal)");
snd_soc_dapm_disable_pin(codec, "Headphone Jack");
snd_soc_dapm_enable_pin(codec, "Headset Jack");
break;
}
if (tosa_spk_func == TOSA_SPK_ON)
snd_soc_dapm_enable_pin(codec, "Speaker");
else
snd_soc_dapm_disable_pin(codec, "Speaker");
snd_soc_dapm_sync(codec);
}
static int tosa_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->socdev->codec;
/* check the jack status at stream startup */
tosa_ext_control(codec);
return 0;
}
static struct snd_soc_ops tosa_ops = {
.startup = tosa_startup,
};
static int tosa_get_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = tosa_jack_func;
return 0;
}
static int tosa_set_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (tosa_jack_func == ucontrol->value.integer.value[0])
return 0;
tosa_jack_func = ucontrol->value.integer.value[0];
tosa_ext_control(codec);
return 1;
}
static int tosa_get_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = tosa_spk_func;
return 0;
}
static int tosa_set_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
if (tosa_spk_func == ucontrol->value.integer.value[0])
return 0;
tosa_spk_func = ucontrol->value.integer.value[0];
tosa_ext_control(codec);
return 1;
}
/* tosa dapm event handlers */
static int tosa_hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
gpio_set_value(TOSA_GPIO_L_MUTE, SND_SOC_DAPM_EVENT_ON(event) ? 1 :0);
return 0;
}
/* tosa machine dapm widgets */
static const struct snd_soc_dapm_widget tosa_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", tosa_hp_event),
SND_SOC_DAPM_HP("Headset Jack", NULL),
SND_SOC_DAPM_MIC("Mic (Internal)", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
};
/* tosa audio map */
static const struct snd_soc_dapm_route audio_map[] = {
/* headphone connected to HPOUTL, HPOUTR */
{"Headphone Jack", NULL, "HPOUTL"},
{"Headphone Jack", NULL, "HPOUTR"},
/* ext speaker connected to LOUT2, ROUT2 */
{"Speaker", NULL, "LOUT2"},
{"Speaker", NULL, "ROUT2"},
/* internal mic is connected to mic1, mic2 differential - with bias */
{"MIC1", NULL, "Mic Bias"},
{"MIC2", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Mic (Internal)"},
/* headset is connected to HPOUTR, and LINEINR with bias */
{"Headset Jack", NULL, "HPOUTR"},
{"LINEINR", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Headset Jack"},
};
static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
"Off"};
static const char *spk_function[] = {"On", "Off"};
static const struct soc_enum tosa_enum[] = {
SOC_ENUM_SINGLE_EXT(5, jack_function),
SOC_ENUM_SINGLE_EXT(2, spk_function),
};
static const struct snd_kcontrol_new tosa_controls[] = {
SOC_ENUM_EXT("Jack Function", tosa_enum[0], tosa_get_jack,
tosa_set_jack),
SOC_ENUM_EXT("Speaker Function", tosa_enum[1], tosa_get_spk,
tosa_set_spk),
};
static int tosa_ac97_init(struct snd_soc_codec *codec)
{
int i, err;
snd_soc_dapm_nc_pin(codec, "OUT3");
snd_soc_dapm_nc_pin(codec, "MONOOUT");
/* add tosa specific controls */
for (i = 0; i < ARRAY_SIZE(tosa_controls); i++) {
err = snd_ctl_add(codec->card,
snd_soc_cnew(&tosa_controls[i],codec, NULL));
if (err < 0)
return err;
}
/* add tosa specific widgets */
snd_soc_dapm_new_controls(codec, tosa_dapm_widgets,
ARRAY_SIZE(tosa_dapm_widgets));
/* set up tosa specific audio path audio_map */
snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
snd_soc_dapm_sync(codec);
return 0;
}
static struct snd_soc_dai_link tosa_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 HiFi",
.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
.codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
.init = tosa_ac97_init,
.ops = &tosa_ops,
},
{
.name = "AC97 Aux",
.stream_name = "AC97 Aux",
.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
.codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
.ops = &tosa_ops,
},
};
static struct snd_soc_machine tosa = {
.name = "Tosa",
.dai_link = tosa_dai,
.num_links = ARRAY_SIZE(tosa_dai),
};
static struct snd_soc_device tosa_snd_devdata = {
.machine = &tosa,
.platform = &pxa2xx_soc_platform,
.codec_dev = &soc_codec_dev_wm9712,
};
static struct platform_device *tosa_snd_device;
static int __init tosa_init(void)
{
int ret;
if (!machine_is_tosa())
return -ENODEV;
ret = gpio_request(TOSA_GPIO_L_MUTE, "Headphone Jack");
if (ret)
return ret;
gpio_direction_output(TOSA_GPIO_L_MUTE, 0);
tosa_snd_device = platform_device_alloc("soc-audio", -1);
if (!tosa_snd_device) {
ret = -ENOMEM;
goto err_alloc;
}
platform_set_drvdata(tosa_snd_device, &tosa_snd_devdata);
tosa_snd_devdata.dev = &tosa_snd_device->dev;
ret = platform_device_add(tosa_snd_device);
if (!ret)
return 0;
platform_device_put(tosa_snd_device);
err_alloc:
gpio_free(TOSA_GPIO_L_MUTE);
return ret;
}
static void __exit tosa_exit(void)
{
platform_device_unregister(tosa_snd_device);
gpio_free(TOSA_GPIO_L_MUTE);
}
module_init(tosa_init);
module_exit(tosa_exit);
/* Module information */
MODULE_AUTHOR("Richard Purdie");
MODULE_DESCRIPTION("ALSA SoC Tosa");
MODULE_LICENSE("GPL");
