mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
25985edced
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
661 lines
18 KiB
C
661 lines
18 KiB
C
/*
|
|
* 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 <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,
|
|
},
|
|
{
|
|
.pin = "Earpiece",
|
|
.mask = SND_JACK_HEADPHONE,
|
|
},
|
|
/* Handsfree */
|
|
{
|
|
.pin = "Microphone",
|
|
.mask = SND_JACK_MICROPHONE,
|
|
.invert = 1,
|
|
},
|
|
{
|
|
.pin = "Speaker",
|
|
.mask = SND_JACK_HEADPHONE,
|
|
.invert = 1,
|
|
},
|
|
};
|
|
|
|
|
|
/*
|
|
* Modem line discipline, required for making above controls functional.
|
|
* Activated from userspace with ldattach, possibly invoked from udev rule.
|
|
*/
|
|
|
|
/* To actually apply any modem controlled configuration changes to the codec,
|
|
* we must connect codec DAI pins to the modem for a moment. Be careful not
|
|
* to interfere with our digital mute function that shares the same hardware. */
|
|
static struct timer_list cx81801_timer;
|
|
static bool cx81801_cmd_pending;
|
|
static bool ams_delta_muted;
|
|
static DEFINE_SPINLOCK(ams_delta_lock);
|
|
|
|
static void cx81801_timeout(unsigned long data)
|
|
{
|
|
int muted;
|
|
|
|
spin_lock(&ams_delta_lock);
|
|
cx81801_cmd_pending = 0;
|
|
muted = ams_delta_muted;
|
|
spin_unlock(&ams_delta_lock);
|
|
|
|
/* Reconnect the codec DAI back from the modem to the CPU DAI
|
|
* only if digital mute still off */
|
|
if (!muted)
|
|
ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC, 0);
|
|
}
|
|
|
|
/*
|
|
* Used for passing a codec structure pointer
|
|
* from the board initialization code to the tty line discipline.
|
|
*/
|
|
static struct snd_soc_codec *cx20442_codec;
|
|
|
|
/* Line discipline .open() */
|
|
static int cx81801_open(struct tty_struct *tty)
|
|
{
|
|
int ret;
|
|
|
|
if (!cx20442_codec)
|
|
return -ENODEV;
|
|
|
|
/*
|
|
* Pass the codec structure pointer for use by other ldisc callbacks,
|
|
* both the card and the codec specific parts.
|
|
*/
|
|
tty->disc_data = cx20442_codec;
|
|
|
|
ret = v253_ops.open(tty);
|
|
|
|
if (ret < 0)
|
|
tty->disc_data = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Line discipline .close() */
|
|
static void cx81801_close(struct tty_struct *tty)
|
|
{
|
|
struct snd_soc_codec *codec = tty->disc_data;
|
|
struct snd_soc_dapm_context *dapm = &codec->dapm;
|
|
|
|
del_timer_sync(&cx81801_timer);
|
|
|
|
/* Prevent the hook switch from further changing the DAPM pins */
|
|
INIT_LIST_HEAD(&ams_delta_hook_switch.pins);
|
|
|
|
if (!codec)
|
|
return;
|
|
|
|
v253_ops.close(tty);
|
|
|
|
/* Revert back to default audio input/output constellation */
|
|
snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
|
|
snd_soc_dapm_enable_pin(dapm, "Earpiece");
|
|
snd_soc_dapm_enable_pin(dapm, "Microphone");
|
|
snd_soc_dapm_disable_pin(dapm, "Speaker");
|
|
snd_soc_dapm_disable_pin(dapm, "AGCIN");
|
|
snd_soc_dapm_sync(dapm);
|
|
}
|
|
|
|
/* Line discipline .hangup() */
|
|
static int cx81801_hangup(struct tty_struct *tty)
|
|
{
|
|
cx81801_close(tty);
|
|
return 0;
|
|
}
|
|
|
|
/* Line discipline .recieve_buf() */
|
|
static void cx81801_receive(struct tty_struct *tty,
|
|
const unsigned char *cp, char *fp, int count)
|
|
{
|
|
struct snd_soc_codec *codec = tty->disc_data;
|
|
const unsigned char *c;
|
|
int apply, ret;
|
|
|
|
if (!codec)
|
|
return;
|
|
|
|
if (!codec->hw_write) {
|
|
/* First modem response, complete setup procedure */
|
|
|
|
/* Initialize timer used for config pulse generation */
|
|
setup_timer(&cx81801_timer, cx81801_timeout, 0);
|
|
|
|
v253_ops.receive_buf(tty, cp, fp, count);
|
|
|
|
/* Link hook switch to DAPM pins */
|
|
ret = snd_soc_jack_add_pins(&ams_delta_hook_switch,
|
|
ARRAY_SIZE(ams_delta_hook_switch_pins),
|
|
ams_delta_hook_switch_pins);
|
|
if (ret)
|
|
dev_warn(codec->dev,
|
|
"Failed to link hook switch to DAPM pins, "
|
|
"will continue with hook switch unlinked.\n");
|
|
|
|
return;
|
|
}
|
|
|
|
v253_ops.receive_buf(tty, cp, fp, count);
|
|
|
|
for (c = &cp[count - 1]; c >= cp; c--) {
|
|
if (*c != '\r')
|
|
continue;
|
|
/* Complete modem response received, apply config to codec */
|
|
|
|
spin_lock_bh(&ams_delta_lock);
|
|
mod_timer(&cx81801_timer, jiffies + msecs_to_jiffies(150));
|
|
apply = !ams_delta_muted && !cx81801_cmd_pending;
|
|
cx81801_cmd_pending = 1;
|
|
spin_unlock_bh(&ams_delta_lock);
|
|
|
|
/* Apply config pulse by connecting the codec to the modem
|
|
* if not already done */
|
|
if (apply)
|
|
ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
|
|
AMS_DELTA_LATCH2_MODEM_CODEC);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Line discipline .write_wakeup() */
|
|
static void cx81801_wakeup(struct tty_struct *tty)
|
|
{
|
|
v253_ops.write_wakeup(tty);
|
|
}
|
|
|
|
static struct tty_ldisc_ops cx81801_ops = {
|
|
.magic = TTY_LDISC_MAGIC,
|
|
.name = "cx81801",
|
|
.owner = THIS_MODULE,
|
|
.open = cx81801_open,
|
|
.close = cx81801_close,
|
|
.hangup = cx81801_hangup,
|
|
.receive_buf = cx81801_receive,
|
|
.write_wakeup = cx81801_wakeup,
|
|
};
|
|
|
|
|
|
/*
|
|
* Even if not very useful, the sound card can still work without any of the
|
|
* above functonality activated. You can still control its audio input/output
|
|
* constellation and speakerphone gain from userspace by issuing AT commands
|
|
* over the modem port.
|
|
*/
|
|
|
|
static int ams_delta_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
|
|
/* Set cpu DAI configuration */
|
|
return snd_soc_dai_set_fmt(rtd->cpu_dai,
|
|
SND_SOC_DAIFMT_DSP_A |
|
|
SND_SOC_DAIFMT_NB_NF |
|
|
SND_SOC_DAIFMT_CBM_CFM);
|
|
}
|
|
|
|
static struct snd_soc_ops ams_delta_ops = {
|
|
.hw_params = ams_delta_hw_params,
|
|
};
|
|
|
|
|
|
/* Board specific codec bias level control */
|
|
static int ams_delta_set_bias_level(struct snd_soc_card *card,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct snd_soc_codec *codec = card->rtd->codec;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
case SND_SOC_BIAS_PREPARE:
|
|
case SND_SOC_BIAS_STANDBY:
|
|
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
|
|
ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_NRESET,
|
|
AMS_DELTA_LATCH2_MODEM_NRESET);
|
|
break;
|
|
case SND_SOC_BIAS_OFF:
|
|
if (codec->dapm.bias_level != SND_SOC_BIAS_OFF)
|
|
ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_NRESET,
|
|
0);
|
|
}
|
|
codec->dapm.bias_level = level;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Digital mute implemented using modem/CPU multiplexer.
|
|
* Shares hardware with codec config pulse generation */
|
|
static bool ams_delta_muted = 1;
|
|
|
|
static int ams_delta_digital_mute(struct snd_soc_dai *dai, int mute)
|
|
{
|
|
int apply;
|
|
|
|
if (ams_delta_muted == mute)
|
|
return 0;
|
|
|
|
spin_lock_bh(&ams_delta_lock);
|
|
ams_delta_muted = mute;
|
|
apply = !cx81801_cmd_pending;
|
|
spin_unlock_bh(&ams_delta_lock);
|
|
|
|
if (apply)
|
|
ams_delta_latch2_write(AMS_DELTA_LATCH2_MODEM_CODEC,
|
|
mute ? AMS_DELTA_LATCH2_MODEM_CODEC : 0);
|
|
return 0;
|
|
}
|
|
|
|
/* Our codec DAI probably doesn't have its own .ops structure */
|
|
static struct snd_soc_dai_ops ams_delta_dai_ops = {
|
|
.digital_mute = ams_delta_digital_mute,
|
|
};
|
|
|
|
/* Will be used if the codec ever has its own digital_mute function */
|
|
static int ams_delta_startup(struct snd_pcm_substream *substream)
|
|
{
|
|
return ams_delta_digital_mute(NULL, 0);
|
|
}
|
|
|
|
static void ams_delta_shutdown(struct snd_pcm_substream *substream)
|
|
{
|
|
ams_delta_digital_mute(NULL, 1);
|
|
}
|
|
|
|
|
|
/*
|
|
* Card initialization
|
|
*/
|
|
|
|
static int ams_delta_cx20442_init(struct snd_soc_pcm_runtime *rtd)
|
|
{
|
|
struct snd_soc_codec *codec = rtd->codec;
|
|
struct snd_soc_dapm_context *dapm = &codec->dapm;
|
|
struct snd_soc_dai *codec_dai = rtd->codec_dai;
|
|
struct snd_soc_card *card = rtd->card;
|
|
int ret;
|
|
/* Codec is ready, now add/activate board specific controls */
|
|
|
|
/* Store a pointer to the codec structure for tty ldisc use */
|
|
cx20442_codec = codec;
|
|
|
|
/* Set up digital mute if not provided by the codec */
|
|
if (!codec_dai->driver->ops) {
|
|
codec_dai->driver->ops = &ams_delta_dai_ops;
|
|
} else {
|
|
ams_delta_ops.startup = ams_delta_startup;
|
|
ams_delta_ops.shutdown = ams_delta_shutdown;
|
|
}
|
|
|
|
/* Set codec bias level */
|
|
ams_delta_set_bias_level(card, SND_SOC_BIAS_STANDBY);
|
|
|
|
/* Add hook switch - can be used to control the codec from userspace
|
|
* even if line discipline fails */
|
|
ret = snd_soc_jack_new(rtd->codec, "hook_switch",
|
|
SND_JACK_HEADSET, &ams_delta_hook_switch);
|
|
if (ret)
|
|
dev_warn(card->dev,
|
|
"Failed to allocate resources for hook switch, "
|
|
"will continue without one.\n");
|
|
else {
|
|
ret = snd_soc_jack_add_gpios(&ams_delta_hook_switch,
|
|
ARRAY_SIZE(ams_delta_hook_switch_gpios),
|
|
ams_delta_hook_switch_gpios);
|
|
if (ret)
|
|
dev_warn(card->dev,
|
|
"Failed to set up hook switch GPIO line, "
|
|
"will continue with hook switch inactive.\n");
|
|
}
|
|
|
|
/* Register optional line discipline for over the modem control */
|
|
ret = tty_register_ldisc(N_V253, &cx81801_ops);
|
|
if (ret) {
|
|
dev_warn(card->dev,
|
|
"Failed to register line discipline, "
|
|
"will continue without any controls.\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Add board specific DAPM widgets and routes */
|
|
ret = snd_soc_dapm_new_controls(dapm, ams_delta_dapm_widgets,
|
|
ARRAY_SIZE(ams_delta_dapm_widgets));
|
|
if (ret) {
|
|
dev_warn(card->dev,
|
|
"Failed to register DAPM controls, "
|
|
"will continue without any.\n");
|
|
return 0;
|
|
}
|
|
|
|
ret = snd_soc_dapm_add_routes(dapm, ams_delta_audio_map,
|
|
ARRAY_SIZE(ams_delta_audio_map));
|
|
if (ret) {
|
|
dev_warn(card->dev,
|
|
"Failed to set up DAPM routes, "
|
|
"will continue with codec default map.\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Set up initial pin constellation */
|
|
snd_soc_dapm_disable_pin(dapm, "Mouthpiece");
|
|
snd_soc_dapm_enable_pin(dapm, "Earpiece");
|
|
snd_soc_dapm_enable_pin(dapm, "Microphone");
|
|
snd_soc_dapm_disable_pin(dapm, "Speaker");
|
|
snd_soc_dapm_disable_pin(dapm, "AGCIN");
|
|
snd_soc_dapm_disable_pin(dapm, "AGCOUT");
|
|
snd_soc_dapm_sync(dapm);
|
|
|
|
/* Add virtual switch */
|
|
ret = snd_soc_add_controls(codec, ams_delta_audio_controls,
|
|
ARRAY_SIZE(ams_delta_audio_controls));
|
|
if (ret)
|
|
dev_warn(card->dev,
|
|
"Failed to register audio mode control, "
|
|
"will continue without it.\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* DAI glue - connects codec <--> CPU */
|
|
static struct snd_soc_dai_link ams_delta_dai_link = {
|
|
.name = "CX20442",
|
|
.stream_name = "CX20442",
|
|
.cpu_dai_name ="omap-mcbsp-dai.0",
|
|
.codec_dai_name = "cx20442-voice",
|
|
.init = ams_delta_cx20442_init,
|
|
.platform_name = "omap-pcm-audio",
|
|
.codec_name = "cx20442-codec",
|
|
.ops = &ams_delta_ops,
|
|
};
|
|
|
|
/* Audio card driver */
|
|
static struct snd_soc_card ams_delta_audio_card = {
|
|
.name = "AMS_DELTA",
|
|
.dai_link = &ams_delta_dai_link,
|
|
.num_links = 1,
|
|
.set_bias_level = ams_delta_set_bias_level,
|
|
};
|
|
|
|
/* Module init/exit */
|
|
static struct platform_device *ams_delta_audio_platform_device;
|
|
static struct platform_device *cx20442_platform_device;
|
|
|
|
static int __init ams_delta_module_init(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!(machine_is_ams_delta()))
|
|
return -ENODEV;
|
|
|
|
ams_delta_audio_platform_device =
|
|
platform_device_alloc("soc-audio", -1);
|
|
if (!ams_delta_audio_platform_device)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(ams_delta_audio_platform_device,
|
|
&ams_delta_audio_card);
|
|
|
|
ret = platform_device_add(ams_delta_audio_platform_device);
|
|
if (ret)
|
|
goto err;
|
|
|
|
/*
|
|
* Codec platform device could be registered from elsewhere (board?),
|
|
* but I do it here as it makes sense only if used with the card.
|
|
*/
|
|
cx20442_platform_device =
|
|
platform_device_register_simple("cx20442-codec", -1, NULL, 0);
|
|
return 0;
|
|
err:
|
|
platform_device_put(ams_delta_audio_platform_device);
|
|
return ret;
|
|
}
|
|
module_init(ams_delta_module_init);
|
|
|
|
static void __exit ams_delta_module_exit(void)
|
|
{
|
|
if (tty_unregister_ldisc(N_V253) != 0)
|
|
dev_warn(&ams_delta_audio_platform_device->dev,
|
|
"failed to unregister V253 line discipline\n");
|
|
|
|
snd_soc_jack_free_gpios(&ams_delta_hook_switch,
|
|
ARRAY_SIZE(ams_delta_hook_switch_gpios),
|
|
ams_delta_hook_switch_gpios);
|
|
|
|
/* Keep modem power on */
|
|
ams_delta_set_bias_level(&ams_delta_audio_card, SND_SOC_BIAS_STANDBY);
|
|
|
|
platform_device_unregister(cx20442_platform_device);
|
|
platform_device_unregister(ams_delta_audio_platform_device);
|
|
}
|
|
module_exit(ams_delta_module_exit);
|
|
|
|
MODULE_AUTHOR("Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>");
|
|
MODULE_DESCRIPTION("ALSA SoC driver for Amstrad E3 (Delta) videophone");
|
|
MODULE_LICENSE("GPL");
|