diff options
Diffstat (limited to 'sound/soc/tegra/tegra_soc_controls.c')
| -rw-r--r-- | sound/soc/tegra/tegra_soc_controls.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra_soc_controls.c b/sound/soc/tegra/tegra_soc_controls.c index c430703f4bd4..90e8679d4dec 100644 --- a/sound/soc/tegra/tegra_soc_controls.c +++ b/sound/soc/tegra/tegra_soc_controls.c @@ -20,6 +20,8 @@ #include "tegra_soc.h" +int tegra_i2sloopback_func = TEGRA_INT_I2SLOOPBACK_OFF; + static void tegra_audio_route(struct tegra_audio_data* audio_data, int device_new, int is_call_mode_new) { @@ -260,6 +262,43 @@ struct snd_kcontrol_new tegra_call_mode_control = { .put = tegra_call_mode_put }; +static int tegra_i2s_loopback_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int tegra_i2s_loopback_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + ucontrol->value.integer.value[0] = tegra_i2sloopback_func; + return 0; +} + +static int tegra_i2s_loopback_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + if (tegra_i2sloopback_func == ucontrol->value.integer.value[0]) + return 0; + + tegra_i2sloopback_func = ucontrol->value.integer.value[0]; + return 1; +} + +struct snd_kcontrol_new tegra_i2s_loopback_control = { + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "I2S loopback", + .private_value = 0xffff, + .info = tegra_i2s_loopback_info, + .get = tegra_i2s_loopback_get, + .put = tegra_i2s_loopback_put +}; + int tegra_controls_init(struct snd_soc_codec *codec) { struct tegra_audio_data* audio_data = codec->socdev->codec_data; @@ -283,5 +322,11 @@ int tegra_controls_init(struct snd_soc_codec *codec) if (err < 0) return err; + /* Add I2S loopback control */ + err = snd_ctl_add(codec->card, + snd_ctl_new1(&tegra_i2s_loopback_control, audio_data)); + if (err < 0) + return err; + return 0; } |