Some models allow the level and pad settings to be controlled from the front-panel of the device. For these, the device will send an "input-other" notification to prompt the driver to re-read the status of those settings.
Signed-off-by: Geoffrey D. Bennett g@b4.vu --- sound/usb/mixer_scarlett_gen2.c | 99 ++++++++++++++++++++++++--------- 1 file changed, 73 insertions(+), 26 deletions(-)
diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c index d742c939eed0..06454d4e58bf 100644 --- a/sound/usb/mixer_scarlett_gen2.c +++ b/sound/usb/mixer_scarlett_gen2.c @@ -318,6 +318,7 @@ struct scarlett2_data { u16 scarlett2_seq; u8 sync_updated; u8 vol_updated; + u8 input_other_updated; u8 sync; u8 master_vol; u8 vol[SCARLETT2_ANALOGUE_MAX]; @@ -331,6 +332,8 @@ struct scarlett2_data { struct snd_kcontrol *vol_ctls[SCARLETT2_ANALOGUE_MAX]; struct snd_kcontrol *mute_ctls[SCARLETT2_ANALOGUE_MAX]; struct snd_kcontrol *dim_mute_ctls[SCARLETT2_DIM_MUTE_COUNT]; + struct snd_kcontrol *level_ctls[SCARLETT2_LEVEL_SWITCH_MAX]; + struct snd_kcontrol *pad_ctls[SCARLETT2_PAD_SWITCH_MAX]; u8 mux[SCARLETT2_MUX_MAX]; u8 mix[SCARLETT2_INPUT_MIX_MAX * SCARLETT2_OUTPUT_MIX_MAX]; }; @@ -723,9 +726,10 @@ static int scarlett2_get_port_start_num( /*** USB Interactions ***/
/* Notifications from the interface */ -#define SCARLETT2_USB_NOTIFY_SYNC 0x00000008 -#define SCARLETT2_USB_NOTIFY_DIM_MUTE 0x00200000 -#define SCARLETT2_USB_NOTIFY_MONITOR 0x00400000 +#define SCARLETT2_USB_NOTIFY_SYNC 0x00000008 +#define SCARLETT2_USB_NOTIFY_DIM_MUTE 0x00200000 +#define SCARLETT2_USB_NOTIFY_MONITOR 0x00400000 +#define SCARLETT2_USB_NOTIFY_INPUT_OTHER 0x00800000
/* Commands for sending/receiving requests/responses */ #define SCARLETT2_USB_CMD_INIT 0 @@ -1745,6 +1749,32 @@ static const struct snd_kcontrol_new scarlett2_sw_hw_enum_ctl = {
/*** Line Level/Instrument Level Switch Controls ***/
+static int scarlett2_update_input_other(struct usb_mixer_interface *mixer) +{ + struct scarlett2_data *private = mixer->private_data; + const struct scarlett2_device_info *info = private->info; + + private->input_other_updated = 0; + + if (info->level_input_count) { + int err = scarlett2_usb_get_config( + mixer, SCARLETT2_CONFIG_LEVEL_SWITCH, + info->level_input_count, private->level_switch); + if (err < 0) + return err; + } + + if (info->pad_input_count) { + int err = scarlett2_usb_get_config( + mixer, SCARLETT2_CONFIG_PAD_SWITCH, + info->pad_input_count, private->pad_switch); + if (err < 0) + return err; + } + + return 0; +} + static int scarlett2_level_enum_ctl_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { @@ -1759,10 +1789,16 @@ static int scarlett2_level_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;
+ mutex_lock(&private->data_mutex); + if (private->input_other_updated) + scarlett2_update_input_other(mixer); ucontrol->value.enumerated.item[0] = private->level_switch[elem->control]; + mutex_unlock(&private->data_mutex); + return 0; }
@@ -1811,10 +1847,16 @@ static int scarlett2_pad_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;
+ mutex_lock(&private->data_mutex); + if (private->input_other_updated) + scarlett2_update_input_other(mixer); ucontrol->value.integer.value[0] = private->pad_switch[elem->control]; + mutex_unlock(&private->data_mutex); + return 0; }
@@ -2025,7 +2067,7 @@ static int scarlett2_add_line_in_ctls(struct usb_mixer_interface *mixer) for (i = 0; i < info->level_input_count; i++) { snprintf(s, sizeof(s), fmt, i + 1, "Level", "Enum"); err = scarlett2_add_new_ctl(mixer, &scarlett2_level_enum_ctl, - i, 1, s, NULL); + i, 1, s, &private->level_ctls[i]); if (err < 0) return err; } @@ -2034,7 +2076,7 @@ static int scarlett2_add_line_in_ctls(struct usb_mixer_interface *mixer) for (i = 0; i < info->pad_input_count; i++) { snprintf(s, sizeof(s), fmt, i + 1, "Pad", "Switch"); err = scarlett2_add_new_ctl(mixer, &scarlett2_pad_ctl, - i, 1, s, NULL); + i, 1, s, &private->pad_ctls[i]); if (err < 0) return err; } @@ -2446,25 +2488,9 @@ static int scarlett2_read_configs(struct usb_mixer_interface *mixer) struct scarlett2_usb_volume_status volume_status; int err, i;
- if (info->level_input_count) { - err = scarlett2_usb_get_config( - mixer, - SCARLETT2_CONFIG_LEVEL_SWITCH, - info->level_input_count, - private->level_switch); - if (err < 0) - return err; - } - - if (info->pad_input_count) { - err = scarlett2_usb_get_config( - mixer, - SCARLETT2_CONFIG_PAD_SWITCH, - info->pad_input_count, - private->pad_switch); - if (err < 0) - return err; - } + err = scarlett2_update_input_other(mixer); + if (err < 0) + return err;
err = scarlett2_update_sync(mixer); if (err < 0) @@ -2578,6 +2604,25 @@ static void scarlett2_notify_dim_mute( &private->mute_ctls[i]->id); }
+/* Notify on "input other" change (level/pad) */ +static void scarlett2_notify_input_other( + struct usb_mixer_interface *mixer) +{ + struct snd_card *card = mixer->chip->card; + struct scarlett2_data *private = mixer->private_data; + const struct scarlett2_device_info *info = private->info; + int i; + + private->input_other_updated = 1; + + for (i = 0; i < info->level_input_count; i++) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, + &private->level_ctls[i]->id); + for (i = 0; i < info->pad_input_count; i++) + snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, + &private->pad_ctls[i]->id); +} + /* Interrupt callback */ static void scarlett2_notify(struct urb *urb) { @@ -2596,6 +2641,8 @@ static void scarlett2_notify(struct urb *urb) scarlett2_notify_monitor(mixer); if (data & SCARLETT2_USB_NOTIFY_DIM_MUTE) scarlett2_notify_dim_mute(mixer); + if (data & SCARLETT2_USB_NOTIFY_INPUT_OTHER) + scarlett2_notify_input_other(mixer);
requeue: if (ustatus != -ENOENT &&