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kernel-ark/sound/soc/pxa/tosa.c
Mark Brown 875065491f ASoC: Rename snd_soc_card to snd_soc_machine 
One of the issues with the ASoC v1 API which has been addressed in the
ASoC v2 work that Liam Girdwood has done is that the ALSA card provided
by ASoC is distributed around the ASoC structures. For example, machine
wide data such as the struct snd_card are maintained as part of the
CODEC data structure, preventing the use of multiple codecs. This has
been addressed by refactoring the data structures so that all the data
for the ALSA card is contained in a single structure snd_soc_card which
replaces the existing snd_soc_machine and snd_soc_device.

Begin the process of backporting this by renaming struct snd_soc_machine
to struct snd_soc_card, better reflecting its function and bringing it
closer to standard ALSA terminology.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-11-21 14:02:01 +00:00

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/*
* 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_card 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_card tosa = {
.name = "Tosa",
.dai_link = tosa_dai,
.num_links = ARRAY_SIZE(tosa_dai),
};
static struct snd_soc_device tosa_snd_devdata = {
.card = &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");
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