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ALSA: usb-audio: scarlett2: Update mux controls to allow updates 

Enabling/disabling speaker switching will update the mux
configuration. To prepare for this, add a private->mux_updated flag
and update the scarlett2_mux_src_enum_ctl_get() callback to check it.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/5ce3bb9fe4006b550d18c783c5ff640fe0bfbfcb.1624379707.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Geoffrey D. Bennett 2021-06-23 02:33:50 +09:30 committed by Takashi Iwai
parent f02da65348
commit 8df25eb0a2
1 changed files with 10 additions and 1 deletions
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11
sound/usb/mixer_scarlett_gen2.c
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@ -378,6 +378,7 @@ struct scarlett2_data {
u8 vol_updated;
u8 input_other_updated;
u8 monitor_other_updated;
u8 mux_updated;
u8 sync;
u8 master_vol;
u8 vol[SCARLETT2_ANALOGUE_MAX];
@ -1446,6 +1447,8 @@ static int scarlett2_usb_get_mux(struct usb_mixer_interface *mixer)
__le32 data[SCARLETT2_MUX_MAX];
private->mux_updated = 0;
req.num = 0;
req.count = cpu_to_le16(count);
@ -2799,7 +2802,8 @@ static int scarlett2_mux_src_enum_ctl_get(struct snd_kcontrol *kctl,
struct snd_ctl_elem_value *ucontrol)
{
struct usb_mixer_elem_info *elem = kctl->private_data;
struct scarlett2_data *private = elem->head.mixer->private_data;
struct usb_mixer_interface *mixer = elem->head.mixer;
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count;
int line_out_count =
@ -2809,7 +2813,12 @@ static int scarlett2_mux_src_enum_ctl_get(struct snd_kcontrol *kctl,
if (index < line_out_count)
index = line_out_remap(private, index);
mutex_lock(&private->data_mutex);
if (private->mux_updated)
scarlett2_usb_get_mux(mixer);
ucontrol->value.enumerated.item[0] = private->mux[index];
mutex_unlock(&private->data_mutex);
return 0;
}