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|
/*
* ams-delta.c -- SoC audio for Amstrad E3 (Delta) videophone
*
* Copyright (C) 2009 Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
*
* Initially based on sound/soc/omap/osk5912.x
* Copyright (C) 2008 Mistral Solutions
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/gpio.h>
#include <linux/spinlock.h>
#include <linux/tty.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <asm/mach-types.h>
#include <plat/board-ams-delta.h>
#include <plat/mcbsp.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
#include "../codecs/cx20442.h"
/* Board specific DAPM widgets */
static const struct snd_soc_dapm_widget ams_delta_dapm_widgets[] = {
/* Handset */
SND_SOC_DAPM_MIC("Mouthpiece", NULL),
SND_SOC_DAPM_HP("Earpiece", NULL),
/* Handsfree/Speakerphone */
SND_SOC_DAPM_MIC("Microphone", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
};
/* How they are connected to codec pins */
static const struct snd_soc_dapm_route ams_delta_audio_map[] = {
{"TELIN", NULL, "Mouthpiece"},
{"Earpiece", NULL, "TELOUT"},
{"MIC", NULL, "Microphone"},
{"Speaker", NULL, "SPKOUT"},
};
/*
* Controls, functional after the modem line discipline is activated.
*/
/* Virtual switch: audio input/output constellations */
static const char *ams_delta_audio_mode[] =
{"Mixed", "Handset", "Handsfree", "Speakerphone"};
/* Selection <-> pin translation */
#define AMS_DELTA_MOUTHPIECE 0
#define AMS_DELTA_EARPIECE 1
#define AMS_DELTA_MICROPHONE 2
#define AMS_DELTA_SPEAKER 3
#define AMS_DELTA_AGC 4
#define AMS_DELTA_MIXED ((1 << AMS_DELTA_EARPIECE) | \
(1 << AMS_DELTA_MICROPHONE))
#define AMS_DELTA_HANDSET ((1 << AMS_DELTA_MOUTHPIECE) | \
(1 << AMS_DELTA_EARPIECE))
#define AMS_DELTA_HANDSFREE ((1 << AMS_DELTA_MICROPHONE) | \
(1 << AMS_DELTA_SPEAKER))
#define AMS_DELTA_SPEAKERPHONE (AMS_DELTA_HANDSFREE | (1 << AMS_DELTA_AGC))
static const unsigned short ams_delta_audio_mode_pins[] = {
AMS_DELTA_MIXED,
AMS_DELTA_HANDSET,
AMS_DELTA_HANDSFREE,
AMS_DELTA_SPEAKERPHONE,
};
static unsigned short ams_delta_audio_agc;
static int ams_delta_set_audio_mode(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_context *dapm = &codec->dapm;
struct soc_enum *control = (struct soc_enum *)kcontrol->private_value;
unsigned short pins;
int pin, changed = 0;
/* Refuse any mode changes if we are not able to control the codec. */
if (!codec->hw_write)
return -EUNATCH;
if (ucontrol->value.enumerated.item[0] >= control->max)
return -EINVAL;
mutex_lock(&codec->mutex);
/* Translate selection to bitmap */
pins = ams_delta_audio_mode_pins[ucontrol->value.enumerated.item[0]];
/* Setup pins after corresponding bits if changed */
pin = !!(pins & (1 << AMS_DELTA_MOUTHPIECE));
if (pin != snd_soc_dapm_get_pin_status(dapm, "Mouthpiece")) {
changed = 1;
if (pin)
snd_soc_dapm_enable_pin(dapm, "Mouthpiece");
else
snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
}
pin = !!(pins & (1 << AMS_DELTA_EARPIECE));
if (pin != snd_soc_dapm_get_pin_status(dapm, "Earpiece")) {
changed = 1;
if (pin)
snd_soc_dapm_enable_pin(dapm, "Earpiece");
else
snd_soc_dapm_disable_pin(dapm, "Earpiece");
}
pin = !!(pins & (1 << AMS_DELTA_MICROPHONE));
if (pin != snd_soc_dapm_get_pin_status(dapm, "Microphone")) {
changed = 1;
if (pin)
snd_soc_dapm_enable_pin(dapm, "Microphone");
else
snd_soc_dapm_disable_pin(dapm, "Microphone");
}
pin = !!(pins & (1 << AMS_DELTA_SPEAKER));
if (pin != snd_soc_dapm_get_pin_status(dapm, "Speaker")) {
changed = 1;
if (pin)
snd_soc_dapm_enable_pin(dapm, "Speaker");
else
snd_soc_dapm_disable_pin(dapm, "Speaker");
}
pin = !!(pins & (1 << AMS_DELTA_AGC));
if (pin != ams_delta_audio_agc) {
ams_delta_audio_agc = pin;
changed = 1;
if (pin)
snd_soc_dapm_enable_pin(dapm, "AGCIN");
else
snd_soc_dapm_disable_pin(dapm, "AGCIN");
}
if (changed)
snd_soc_dapm_sync(dapm);
mutex_unlock(&codec->mutex);
return changed;
}
static int ams_delta_get_audio_mode(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_context *dapm = &codec->dapm;
unsigned short pins, mode;
pins = ((snd_soc_dapm_get_pin_status(dapm, "Mouthpiece") <<
AMS_DELTA_MOUTHPIECE) |
(snd_soc_dapm_get_pin_status(dapm, "Earpiece") <<
AMS_DELTA_EARPIECE));
if (pins)
pins |= (snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
AMS_DELTA_MICROPHONE);
else
pins = ((snd_soc_dapm_get_pin_status(dapm, "Microphone") <<
AMS_DELTA_MICROPHONE) |
(snd_soc_dapm_get_pin_status(dapm, "Speaker") <<
AMS_DELTA_SPEAKER) |
(ams_delta_audio_agc << AMS_DELTA_AGC));
for (mode = 0; mode < ARRAY_SIZE(ams_delta_audio_mode); mode++)
if (pins == ams_delta_audio_mode_pins[mode])
break;
if (mode >= ARRAY_SIZE(ams_delta_audio_mode))
return -EINVAL;
ucontrol->value.enumerated.item[0] = mode;
return 0;
}
static const struct soc_enum ams_delta_audio_enum[] = {
SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(ams_delta_audio_mode),
ams_delta_audio_mode),
};
static const struct snd_kcontrol_new ams_delta_audio_controls[] = {
SOC_ENUM_EXT("Audio Mode", ams_delta_audio_enum[0],
ams_delta_get_audio_mode, ams_delta_set_audio_mode),
};
/* Hook switch */
static struct snd_soc_jack ams_delta_hook_switch;
static struct snd_soc_jack_gpio ams_delta_hook_switch_gpios[] = {
{
.gpio = 4,
.name = "hook_switch",
.report = SND_JACK_HEADSET,
.invert = 1,
.debounce_time = 150,
}
};
/* After we are able to control the codec over the modem,
* the hook switch can be used for dynamic DAPM reconfiguration. */
static struct snd_soc_jack_pin ams_delta_hook_switch_pins[] = {
/* Handset */
{
.pin = "Mouthpiece",
.mask = SND_JACK_MICROPHONE,
},
{
|