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[ALSA] ASoC pxa2xx Spitz machine support
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This patch adds Alsa audio support to the Sharp Zaurus SL-C1000/SL-C3x00
(Akita/Spitz) machines.
From: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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Liam Girdwood authored and Jaroslav Kysela committed Feb 9, 2007
1 parent a1eb4b3 commit 7fb290d
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374 changes: 374 additions & 0 deletions sound/soc/pxa/spitz.c
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/*
* spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
*
* 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.
*
* Revision history
* 30th Nov 2005 Initial version.
*
*/

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/driver.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/scoop.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/hardware.h>
#include <asm/arch/akita.h>
#include <asm/arch/spitz.h>
#include <asm/mach-types.h>
#include "../codecs/wm8750.h"
#include "pxa2xx-pcm.h"

#define SPITZ_HP 0
#define SPITZ_MIC 1
#define SPITZ_LINE 2
#define SPITZ_HEADSET 3
#define SPITZ_HP_OFF 4
#define SPITZ_SPK_ON 0
#define SPITZ_SPK_OFF 1

/* audio clock in Hz - rounded from 12.235MHz */
#define SPITZ_AUDIO_CLOCK 12288000

static int spitz_jack_func;
static int spitz_spk_func;

static void spitz_ext_control(struct snd_soc_codec *codec)
{
if (spitz_spk_func == SPITZ_SPK_ON)
snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);
else
snd_soc_dapm_set_endpoint(codec, "Ext Spk", 0);

/* set up jack connection */
switch (spitz_jack_func) {
case SPITZ_HP:
/* enable and unmute hp jack, disable mic bias */
snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
break;
case SPITZ_MIC:
/* enable mic jack and bias, mute hp */
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
break;
case SPITZ_LINE:
/* enable line jack, disable mic bias and mute hp */
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Line Jack", 1);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
break;
case SPITZ_HEADSET:
/* enable and unmute headset jack enable mic bias, mute L hp */
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Jack", 1);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
break;
case SPITZ_HP_OFF:

/* jack removed, everything off */
snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
break;
}
snd_soc_dapm_sync_endpoints(codec);
}

static int spitz_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 */
spitz_ext_control(codec);
return 0;
}

static struct snd_soc_ops spitz_ops = {
.startup = spitz_startup,
};

static int spitz_get_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = spitz_jack_func;
return 0;
}

static int spitz_set_jack(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

if (spitz_jack_func == ucontrol->value.integer.value[0])
return 0;

spitz_jack_func = ucontrol->value.integer.value[0];
spitz_ext_control(codec);
return 1;
}

static int spitz_get_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = spitz_spk_func;
return 0;
}

static int spitz_set_spk(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

if (spitz_spk_func == ucontrol->value.integer.value[0])
return 0;

spitz_spk_func = ucontrol->value.integer.value[0];
spitz_ext_control(codec);
return 1;
}

static int spitz_mic_bias(struct snd_soc_dapm_widget *w, int event)
{
if (machine_is_borzoi() || machine_is_spitz()) {
if (SND_SOC_DAPM_EVENT_ON(event))
set_scoop_gpio(&spitzscoop2_device.dev,
SPITZ_SCP2_MIC_BIAS);
else
reset_scoop_gpio(&spitzscoop2_device.dev,
SPITZ_SCP2_MIC_BIAS);
}

if (machine_is_akita()) {
if (SND_SOC_DAPM_EVENT_ON(event))
akita_set_ioexp(&akitaioexp_device.dev,
AKITA_IOEXP_MIC_BIAS);
else
akita_reset_ioexp(&akitaioexp_device.dev,
AKITA_IOEXP_MIC_BIAS);
}
return 0;
}

/* spitz machine dapm widgets */
static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_LINE("Line Jack", NULL),

/* headset is a mic and mono headphone */
SND_SOC_DAPM_HP("Headset Jack", NULL),
};

/* Spitz machine audio_map */
static const char *audio_map[][3] = {

/* headphone connected to LOUT1, ROUT1 */
{"Headphone Jack", NULL, "LOUT1"},
{"Headphone Jack", NULL, "ROUT1"},

/* headset connected to ROUT1 and LINPUT1 with bias (def below) */
{"Headset Jack", NULL, "ROUT1"},

/* ext speaker connected to LOUT2, ROUT2 */
{"Ext Spk", NULL , "ROUT2"},
{"Ext Spk", NULL , "LOUT2"},

/* mic is connected to input 1 - with bias */
{"LINPUT1", NULL, "Mic Bias"},
{"Mic Bias", NULL, "Mic Jack"},

/* line is connected to input 1 - no bias */
{"LINPUT1", NULL, "Line Jack"},

{NULL, NULL, NULL},
};

static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
"Off"};
static const char *spk_function[] = {"On", "Off"};
static const struct soc_enum spitz_enum[] = {
SOC_ENUM_SINGLE_EXT(5, jack_function),
SOC_ENUM_SINGLE_EXT(2, spk_function),
};

static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
spitz_set_jack),
SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
spitz_set_spk),
};

/*
* Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
*/
static int spitz_wm8750_init(struct snd_soc_codec *codec)
{
int i, err;

/* NC codec pins */
snd_soc_dapm_set_endpoint(codec, "RINPUT1", 0);
snd_soc_dapm_set_endpoint(codec, "LINPUT2", 0);
snd_soc_dapm_set_endpoint(codec, "RINPUT2", 0);
snd_soc_dapm_set_endpoint(codec, "LINPUT3", 0);
snd_soc_dapm_set_endpoint(codec, "RINPUT3", 0);
snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
snd_soc_dapm_set_endpoint(codec, "MONO", 0);

/* Add spitz specific controls */
for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
err = snd_ctl_add(codec->card,
snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
if (err < 0)
return err;
}

/* Add spitz specific widgets */
for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++) {
snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);
}

/* Set up spitz 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;
}

static unsigned int spitz_config_sysclk(struct snd_soc_pcm_runtime *rtd,
struct snd_soc_clock_info *info)
{
if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {
/* pxa2xx is i2s master */
switch (info->rate) {
case 11025:
case 22050:
case 44100:
case 88200:
/* configure codec digital filters
* for 11.025, 22.05, 44.1, 88.2 */
rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
11289600);
break;
default:
/* configure codec digital filters for all other rates */
rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
SPITZ_AUDIO_CLOCK);
break;
}
/* configure pxa2xx i2s interface clocks as master */
return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,
SPITZ_AUDIO_CLOCK);
} else {
/* codec is i2s master - only configure codec DAI clock */
return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,
SPITZ_AUDIO_CLOCK);
}
}

/* spitz digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link spitz_dai = {
.name = "wm8750",
.stream_name = "WM8750",
.cpu_dai = &pxa_i2s_dai,
.codec_dai = &wm8750_dai,
.init = spitz_wm8750_init,
.config_sysclk = spitz_config_sysclk,
};

/* spitz audio machine driver */
static struct snd_soc_machine snd_soc_machine_spitz = {
.name = "Spitz",
.dai_link = &spitz_dai,
.num_links = 1,
.ops = &spitz_ops,
};

/* spitz audio private data */
static struct wm8750_setup_data spitz_wm8750_setup = {
.i2c_address = 0x1b,
};

/* spitz audio subsystem */
static struct snd_soc_device spitz_snd_devdata = {
.machine = &snd_soc_machine_spitz,
.platform = &pxa2xx_soc_platform,
.codec_dev = &soc_codec_dev_wm8750,
.codec_data = &spitz_wm8750_setup,
};

static struct platform_device *spitz_snd_device;

static int __init spitz_init(void)
{
int ret;

if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
return -ENODEV;

spitz_snd_device = platform_device_alloc("soc-audio", -1);
if (!spitz_snd_device)
return -ENOMEM;

platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
spitz_snd_devdata.dev = &spitz_snd_device->dev;
ret = platform_device_add(spitz_snd_device);

if (ret)
platform_device_put(spitz_snd_device);

return ret;
}

static void __exit spitz_exit(void)
{
platform_device_unregister(spitz_snd_device);
}

module_init(spitz_init);
module_exit(spitz_exit);

MODULE_AUTHOR("Richard Purdie");
MODULE_DESCRIPTION("ALSA SoC Spitz");
MODULE_LICENSE("GPL");

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