mirror of https://gitee.com/openkylin/linux.git
256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
/*
|
|
* SoC audio for HP iPAQ hx4700
|
|
*
|
|
* Copyright (c) 2009 Philipp Zabel
|
|
*
|
|
* 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/timer.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/jack.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include <mach/hx4700.h>
|
|
#include <asm/mach-types.h>
|
|
#include "pxa2xx-i2s.h"
|
|
|
|
#include "../codecs/ak4641.h"
|
|
|
|
static struct snd_soc_jack hs_jack;
|
|
|
|
/* Headphones jack detection DAPM pin */
|
|
static struct snd_soc_jack_pin hs_jack_pin[] = {
|
|
{
|
|
.pin = "Headphone Jack",
|
|
.mask = SND_JACK_HEADPHONE,
|
|
},
|
|
{
|
|
.pin = "Speaker",
|
|
/* disable speaker when hp jack is inserted */
|
|
.mask = SND_JACK_HEADPHONE,
|
|
.invert = 1,
|
|
},
|
|
};
|
|
|
|
/* Headphones jack detection GPIO */
|
|
static struct snd_soc_jack_gpio hs_jack_gpio = {
|
|
.gpio = GPIO75_HX4700_EARPHONE_nDET,
|
|
.invert = true,
|
|
.name = "hp-gpio",
|
|
.report = SND_JACK_HEADPHONE,
|
|
.debounce_time = 200,
|
|
};
|
|
|
|
/*
|
|
* iPAQ hx4700 uses I2S for capture and playback.
|
|
*/
|
|
static int hx4700_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;
|
|
int ret = 0;
|
|
|
|
/* set codec DAI configuration */
|
|
ret = snd_soc_dai_set_fmt(codec_dai,
|
|
SND_SOC_DAIFMT_MSB | 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_MSB | SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBS_CFS);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set the I2S system clock as output */
|
|
ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
|
|
SND_SOC_CLOCK_OUT);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* inform codec driver about clock freq *
|
|
* (PXA I2S always uses divider 256) */
|
|
ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_ops hx4700_ops = {
|
|
.hw_params = hx4700_hw_params,
|
|
};
|
|
|
|
static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *k, int event)
|
|
{
|
|
gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
|
|
return 0;
|
|
}
|
|
|
|
static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *k, int event)
|
|
{
|
|
gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
|
|
return 0;
|
|
}
|
|
|
|
/* hx4700 machine dapm widgets */
|
|
static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
|
|
SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
|
|
SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
|
|
};
|
|
|
|
/* hx4700 machine audio_map */
|
|
static const struct snd_soc_dapm_route hx4700_audio_map[] = {
|
|
|
|
/* Headphone connected to LOUT, ROUT */
|
|
{"Headphone Jack", NULL, "LOUT"},
|
|
{"Headphone Jack", NULL, "ROUT"},
|
|
|
|
/* Speaker connected to MOUT2 */
|
|
{"Speaker", NULL, "MOUT2"},
|
|
|
|
/* Microphone connected to MICIN */
|
|
{"MICIN", NULL, "Built-in Microphone"},
|
|
{"AIN", NULL, "MICOUT"},
|
|
};
|
|
|
|
/*
|
|
* Logic for a ak4641 as connected on a HP iPAQ hx4700
|
|
*/
|
|
static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
struct snd_soc_codec *codec = rtd->codec;
|
|
struct snd_soc_dapm_context *dapm = &codec->dapm;
|
|
int err;
|
|
|
|
/* NC codec pins */
|
|
/* FIXME: is anything connected here? */
|
|
snd_soc_dapm_nc_pin(dapm, "MOUT1");
|
|
snd_soc_dapm_nc_pin(dapm, "MICEXT");
|
|
snd_soc_dapm_nc_pin(dapm, "AUX");
|
|
|
|
/* Jack detection API stuff */
|
|
err = snd_soc_jack_new(codec, "Headphone Jack",
|
|
SND_JACK_HEADPHONE, &hs_jack);
|
|
if (err)
|
|
return err;
|
|
|
|
err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
|
|
hs_jack_pin);
|
|
if (err)
|
|
return err;
|
|
|
|
err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* hx4700 digital audio interface glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link hx4700_dai = {
|
|
.name = "ak4641",
|
|
.stream_name = "AK4641",
|
|
.cpu_dai_name = "pxa2xx-i2s",
|
|
.codec_dai_name = "ak4641-hifi",
|
|
.platform_name = "pxa-pcm-audio",
|
|
.codec_name = "ak4641.0-0012",
|
|
.init = hx4700_ak4641_init,
|
|
.ops = &hx4700_ops,
|
|
};
|
|
|
|
/* hx4700 audio machine driver */
|
|
static struct snd_soc_card snd_soc_card_hx4700 = {
|
|
.name = "iPAQ hx4700",
|
|
.dai_link = &hx4700_dai,
|
|
.num_links = 1,
|
|
.dapm_widgets = hx4700_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets),
|
|
.dapm_routes = hx4700_audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(hx4700_audio_map),
|
|
};
|
|
|
|
static struct gpio hx4700_audio_gpios[] = {
|
|
{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
|
|
{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
|
|
};
|
|
|
|
static int __devinit hx4700_audio_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_h4700())
|
|
return -ENODEV;
|
|
|
|
ret = gpio_request_array(hx4700_audio_gpios,
|
|
ARRAY_SIZE(hx4700_audio_gpios));
|
|
if (ret)
|
|
return ret;
|
|
|
|
snd_soc_card_hx4700.dev = &pdev->dev;
|
|
ret = snd_soc_register_card(&snd_soc_card_hx4700);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit hx4700_audio_remove(struct platform_device *pdev)
|
|
{
|
|
snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);
|
|
snd_soc_unregister_card(&snd_soc_card_hx4700);
|
|
|
|
gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
|
|
gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);
|
|
|
|
gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver hx4700_audio_driver = {
|
|
.driver = {
|
|
.name = "hx4700-audio",
|
|
.owner = THIS_MODULE,
|
|
.pm = &snd_soc_pm_ops,
|
|
},
|
|
.probe = hx4700_audio_probe,
|
|
.remove = __devexit_p(hx4700_audio_remove),
|
|
};
|
|
|
|
static int __init hx4700_modinit(void)
|
|
{
|
|
return platform_driver_register(&hx4700_audio_driver);
|
|
}
|
|
module_init(hx4700_modinit);
|
|
|
|
static void __exit hx4700_modexit(void)
|
|
{
|
|
platform_driver_unregister(&hx4700_audio_driver);
|
|
}
|
|
|
|
module_exit(hx4700_modexit);
|
|
|
|
MODULE_AUTHOR("Philipp Zabel");
|
|
MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:hx4700-audio");
|