static void __exit ams_delta_module_exit(void)
{
struct snd_soc_codec *codec;
struct tty_struct *tty;
if (ams_delta_audio_card.codec) {
codec = ams_delta_audio_card.codec;
if (codec->control_data) {
tty = codec->control_data;
tty_hangup(tty);
}
}
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);
}
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);
}
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, dapm, 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;
}
