352 lines
9.0 KiB
C
352 lines
9.0 KiB
C
/*
|
|
* poodle.c -- SoC audio for Poodle
|
|
*
|
|
* Copyright 2005 Wolfson Microelectronics PLC.
|
|
* Copyright 2005 Openedhand Ltd.
|
|
*
|
|
* Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
|
|
* 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/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/soc-dapm.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/hardware/locomo.h>
|
|
#include <asm/arch/pxa-regs.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/poodle.h>
|
|
#include <asm/arch/audio.h>
|
|
|
|
#include "../codecs/wm8731.h"
|
|
#include "pxa2xx-pcm.h"
|
|
#include "pxa2xx-i2s.h"
|
|
|
|
#define POODLE_HP 1
|
|
#define POODLE_HP_OFF 0
|
|
#define POODLE_SPK_ON 1
|
|
#define POODLE_SPK_OFF 0
|
|
|
|
/* audio clock in Hz - rounded from 12.235MHz */
|
|
#define POODLE_AUDIO_CLOCK 12288000
|
|
|
|
static int poodle_jack_func;
|
|
static int poodle_spk_func;
|
|
|
|
static void poodle_ext_control(struct snd_soc_codec *codec)
|
|
{
|
|
int spk = 0;
|
|
|
|
/* set up jack connection */
|
|
if (poodle_jack_func == POODLE_HP) {
|
|
/* set = unmute headphone */
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_L, 1);
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_R, 1);
|
|
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
|
|
} else {
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_L, 0);
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_R, 0);
|
|
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
|
|
}
|
|
|
|
if (poodle_spk_func == POODLE_SPK_ON)
|
|
spk = 1;
|
|
|
|
/* set the enpoints to their new connetion states */
|
|
snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);
|
|
|
|
/* signal a DAPM event */
|
|
snd_soc_dapm_sync_endpoints(codec);
|
|
}
|
|
|
|
static int poodle_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 */
|
|
poodle_ext_control(codec);
|
|
return 0;
|
|
}
|
|
|
|
/* we need to unmute the HP at shutdown as the mute burns power on poodle */
|
|
static int poodle_shutdown(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct snd_soc_codec *codec = rtd->socdev->codec;
|
|
|
|
/* set = unmute headphone */
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_L, 1);
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_R, 1);
|
|
return 0;
|
|
}
|
|
|
|
static int poodle_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_codec_dai *codec_dai = rtd->dai->codec_dai;
|
|
struct snd_soc_cpu_dai *cpu_dai = rtd->dai->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 codec DAI configuration */
|
|
ret = codec_dai->dai_ops.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 = cpu_dai->dai_ops.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 = codec_dai->dai_ops.set_sysclk(codec_dai, WM8731_SYSCLK, clk,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* set the I2S system clock as input (unused) */
|
|
ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
|
|
SND_SOC_CLOCK_IN);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_ops poodle_ops = {
|
|
.startup = poodle_startup,
|
|
.hw_params = poodle_hw_params,
|
|
.shutdown = poodle_shutdown,
|
|
};
|
|
|
|
static int poodle_get_jack(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
ucontrol->value.integer.value[0] = poodle_jack_func;
|
|
return 0;
|
|
}
|
|
|
|
static int poodle_set_jack(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
|
|
if (poodle_jack_func == ucontrol->value.integer.value[0])
|
|
return 0;
|
|
|
|
poodle_jack_func = ucontrol->value.integer.value[0];
|
|
poodle_ext_control(codec);
|
|
return 1;
|
|
}
|
|
|
|
static int poodle_get_spk(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
ucontrol->value.integer.value[0] = poodle_spk_func;
|
|
return 0;
|
|
}
|
|
|
|
static int poodle_set_spk(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
|
|
if (poodle_spk_func == ucontrol->value.integer.value[0])
|
|
return 0;
|
|
|
|
poodle_spk_func = ucontrol->value.integer.value[0];
|
|
poodle_ext_control(codec);
|
|
return 1;
|
|
}
|
|
|
|
static int poodle_amp_event(struct snd_soc_dapm_widget *w, int event)
|
|
{
|
|
if (SND_SOC_DAPM_EVENT_ON(event))
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_AMP_ON, 0);
|
|
else
|
|
locomo_gpio_write(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_AMP_ON, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* poodle machine dapm widgets */
|
|
static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
|
|
SND_SOC_DAPM_HP("Headphone Jack", NULL),
|
|
SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
|
|
};
|
|
|
|
/* Corgi machine audio_mapnections to the codec pins */
|
|
static const char *audio_map[][3] = {
|
|
|
|
/* 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"},
|
|
|
|
{NULL, NULL, NULL},
|
|
};
|
|
|
|
static const char *jack_function[] = {"Off", "Headphone"};
|
|
static const char *spk_function[] = {"Off", "On"};
|
|
static const struct soc_enum poodle_enum[] = {
|
|
SOC_ENUM_SINGLE_EXT(2, jack_function),
|
|
SOC_ENUM_SINGLE_EXT(2, spk_function),
|
|
};
|
|
|
|
static const snd_kcontrol_new_t wm8731_poodle_controls[] = {
|
|
SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
|
|
poodle_set_jack),
|
|
SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
|
|
poodle_set_spk),
|
|
};
|
|
|
|
/*
|
|
* Logic for a wm8731 as connected on a Sharp SL-C7x0 Device
|
|
*/
|
|
static int poodle_wm8731_init(struct snd_soc_codec *codec)
|
|
{
|
|
int i, err;
|
|
|
|
snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);
|
|
snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);
|
|
snd_soc_dapm_set_endpoint(codec, "MICIN", 1);
|
|
|
|
/* Add poodle specific controls */
|
|
for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {
|
|
err = snd_ctl_add(codec->card,
|
|
snd_soc_cnew(&wm8731_poodle_controls[i],codec, NULL));
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
/* Add poodle specific widgets */
|
|
for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {
|
|
snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);
|
|
}
|
|
|
|
/* Set up poodle specific audio path audio_map */
|
|
for (i = 0; audio_map[i][0] != NULL; i++) {
|
|
snd_soc_dapm_connect_input(codec, audio_map[i][0],
|
|
audio_map[i][1], audio_map[i][2]);
|
|
}
|
|
|
|
snd_soc_dapm_sync_endpoints(codec);
|
|
return 0;
|
|
}
|
|
|
|
/* poodle digital audio interface glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link poodle_dai = {
|
|
.name = "WM8731",
|
|
.stream_name = "WM8731",
|
|
.cpu_dai = &pxa_i2s_dai,
|
|
.codec_dai = &wm8731_dai,
|
|
.init = poodle_wm8731_init,
|
|
.ops = &poodle_ops,
|
|
};
|
|
|
|
/* poodle audio machine driver */
|
|
static struct snd_soc_machine snd_soc_machine_poodle = {
|
|
.name = "Poodle",
|
|
.dai_link = &poodle_dai,
|
|
.num_links = 1,
|
|
};
|
|
|
|
/* poodle audio private data */
|
|
static struct wm8731_setup_data poodle_wm8731_setup = {
|
|
.i2c_address = 0x1b,
|
|
};
|
|
|
|
/* poodle audio subsystem */
|
|
static struct snd_soc_device poodle_snd_devdata = {
|
|
.machine = &snd_soc_machine_poodle,
|
|
.platform = &pxa2xx_soc_platform,
|
|
.codec_dev = &soc_codec_dev_wm8731,
|
|
.codec_data = &poodle_wm8731_setup,
|
|
};
|
|
|
|
static struct platform_device *poodle_snd_device;
|
|
|
|
static int __init poodle_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!machine_is_poodle())
|
|
return -ENODEV;
|
|
|
|
locomo_gpio_set_dir(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_AMP_ON, 0);
|
|
/* should we mute HP at startup - burning power ?*/
|
|
locomo_gpio_set_dir(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_L, 0);
|
|
locomo_gpio_set_dir(&poodle_locomo_device.dev,
|
|
POODLE_LOCOMO_GPIO_MUTE_R, 0);
|
|
|
|
poodle_snd_device = platform_device_alloc("soc-audio", -1);
|
|
if (!poodle_snd_device)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);
|
|
poodle_snd_devdata.dev = &poodle_snd_device->dev;
|
|
ret = platform_device_add(poodle_snd_device);
|
|
|
|
if (ret)
|
|
platform_device_put(poodle_snd_device);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit poodle_exit(void)
|
|
{
|
|
platform_device_unregister(poodle_snd_device);
|
|
}
|
|
|
|
module_init(poodle_init);
|
|
module_exit(poodle_exit);
|
|
|
|
/* Module information */
|
|
MODULE_AUTHOR("Richard Purdie");
|
|
MODULE_DESCRIPTION("ALSA SoC Poodle");
|
|
MODULE_LICENSE("GPL");
|