ALSA: scarlett2: Move initialisation code lower in the source

So that more forward declarations won't be required when we add
handling of the ACK notification, move the initialisation functions to
after the notification functions.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Message-ID: <0922071cb8be99a2394705de27b917d1e4e46f3f.1710264833.git.g@b4.vu>
This commit is contained in:
Geoffrey D. Bennett 2024-03-13 05:03:14 +10:30 committed by Takashi Iwai
parent a9b16d5918
commit 4074f8d232

View file

@ -6383,412 +6383,7 @@ static int scarlett2_add_power_status_ctl(struct usb_mixer_interface *mixer)
&private->power_status_ctl);
}
/*** Cleanup/Suspend Callbacks ***/
static void scarlett2_private_free(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
cancel_delayed_work_sync(&private->work);
kfree(private);
mixer->private_data = NULL;
}
static void scarlett2_private_suspend(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
if (cancel_delayed_work_sync(&private->work))
scarlett2_config_save(private->mixer);
}
/*** Initialisation ***/
static void scarlett2_count_io(struct scarlett2_data *private)
{
const struct scarlett2_device_info *info = private->info;
const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count;
int port_type, srcs = 0, dsts = 0;
/* Count the number of mux sources and destinations */
for (port_type = 0;
port_type < SCARLETT2_PORT_TYPE_COUNT;
port_type++) {
srcs += port_count[port_type][SCARLETT2_PORT_IN];
dsts += port_count[port_type][SCARLETT2_PORT_OUT];
}
private->num_mux_srcs = srcs;
private->num_mux_dsts = dsts;
/* Mixer inputs are mux outputs and vice versa.
* Scarlett Gen 4 DSP I/O uses SCARLETT2_PORT_TYPE_MIX but
* doesn't have mixer controls.
*/
private->num_mix_in =
port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_OUT] -
info->dsp_count;
private->num_mix_out =
port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_IN] -
info->dsp_count;
/* Number of analogue line outputs */
private->num_line_out =
port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT];
/* Number of monitor mix controls */
private->num_monitor_mix_ctls =
info->direct_monitor * 2 * private->num_mix_in;
}
/* Look through the interface descriptors for the Focusrite Control
* interface (bInterfaceClass = 255 Vendor Specific Class) and set
* bInterfaceNumber, bEndpointAddress, wMaxPacketSize, and bInterval
* in private
*/
static int scarlett2_find_fc_interface(struct usb_device *dev,
struct scarlett2_data *private)
{
struct usb_host_config *config = dev->actconfig;
int i;
for (i = 0; i < config->desc.bNumInterfaces; i++) {
struct usb_interface *intf = config->interface[i];
struct usb_interface_descriptor *desc =
&intf->altsetting[0].desc;
struct usb_endpoint_descriptor *epd;
if (desc->bInterfaceClass != 255)
continue;
epd = get_endpoint(intf->altsetting, 0);
private->bInterfaceNumber = desc->bInterfaceNumber;
private->bEndpointAddress = epd->bEndpointAddress &
USB_ENDPOINT_NUMBER_MASK;
private->wMaxPacketSize = le16_to_cpu(epd->wMaxPacketSize);
private->bInterval = epd->bInterval;
return 0;
}
return -EINVAL;
}
/* Initialise private data */
static int scarlett2_init_private(struct usb_mixer_interface *mixer,
const struct scarlett2_device_entry *entry)
{
struct scarlett2_data *private =
kzalloc(sizeof(struct scarlett2_data), GFP_KERNEL);
if (!private)
return -ENOMEM;
mutex_init(&private->usb_mutex);
mutex_init(&private->data_mutex);
INIT_DELAYED_WORK(&private->work, scarlett2_config_save_work);
mixer->private_data = private;
mixer->private_free = scarlett2_private_free;
mixer->private_suspend = scarlett2_private_suspend;
private->info = entry->info;
private->config_set = entry->info->config_set;
private->series_name = entry->series_name;
scarlett2_count_io(private);
private->scarlett2_seq = 0;
private->mixer = mixer;
return scarlett2_find_fc_interface(mixer->chip->dev, private);
}
/* Cargo cult proprietary initialisation sequence */
static int scarlett2_usb_init(struct usb_mixer_interface *mixer)
{
struct usb_device *dev = mixer->chip->dev;
struct scarlett2_data *private = mixer->private_data;
u8 step0_buf[24];
u8 step2_buf[84];
int err;
if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
/* step 0 */
err = scarlett2_usb_rx(dev, private->bInterfaceNumber,
SCARLETT2_USB_CMD_INIT,
step0_buf, sizeof(step0_buf));
if (err < 0)
return err;
/* step 1 */
private->scarlett2_seq = 1;
err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_1, NULL, 0, NULL, 0);
if (err < 0)
return err;
/* step 2 */
private->scarlett2_seq = 1;
err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_2,
NULL, 0,
step2_buf, sizeof(step2_buf));
if (err < 0)
return err;
/* extract 4-byte firmware version from step2_buf[8] */
private->firmware_version = le32_to_cpu(*(__le32 *)(step2_buf + 8));
usb_audio_info(mixer->chip,
"Firmware version %d\n",
private->firmware_version);
return 0;
}
/* Get the flash segment numbers for the App_Settings and App_Upgrade
* segments and put them in the private data
*/
static int scarlett2_get_flash_segment_nums(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
int err, count, i;
struct {
__le32 size;
__le32 count;
u8 unknown[8];
} __packed flash_info;
struct {
__le32 size;
__le32 flags;
char name[16];
} __packed segment_info;
err = scarlett2_usb(mixer, SCARLETT2_USB_INFO_FLASH,
NULL, 0,
&flash_info, sizeof(flash_info));
if (err < 0)
return err;
count = le32_to_cpu(flash_info.count);
/* sanity check count */
if (count < SCARLETT2_SEGMENT_NUM_MIN ||
count > SCARLETT2_SEGMENT_NUM_MAX + 1) {
usb_audio_err(mixer->chip,
"invalid flash segment count: %d\n", count);
return -EINVAL;
}
for (i = 0; i < count; i++) {
__le32 segment_num_req = cpu_to_le32(i);
int flash_segment_id;
err = scarlett2_usb(mixer, SCARLETT2_USB_INFO_SEGMENT,
&segment_num_req, sizeof(segment_num_req),
&segment_info, sizeof(segment_info));
if (err < 0) {
usb_audio_err(mixer->chip,
"failed to get flash segment info %d: %d\n",
i, err);
return err;
}
if (!strncmp(segment_info.name,
SCARLETT2_SEGMENT_SETTINGS_NAME, 16))
flash_segment_id = SCARLETT2_SEGMENT_ID_SETTINGS;
else if (!strncmp(segment_info.name,
SCARLETT2_SEGMENT_FIRMWARE_NAME, 16))
flash_segment_id = SCARLETT2_SEGMENT_ID_FIRMWARE;
else
continue;
private->flash_segment_nums[flash_segment_id] = i;
private->flash_segment_blocks[flash_segment_id] =
le32_to_cpu(segment_info.size) /
SCARLETT2_FLASH_BLOCK_SIZE;
}
/* segment 0 is App_Gold and we never want to touch that, so
* use 0 as the "not-found" value
*/
if (!private->flash_segment_nums[SCARLETT2_SEGMENT_ID_SETTINGS]) {
usb_audio_err(mixer->chip,
"failed to find flash segment %s\n",
SCARLETT2_SEGMENT_SETTINGS_NAME);
return -EINVAL;
}
if (!private->flash_segment_nums[SCARLETT2_SEGMENT_ID_FIRMWARE]) {
usb_audio_err(mixer->chip,
"failed to find flash segment %s\n",
SCARLETT2_SEGMENT_FIRMWARE_NAME);
return -EINVAL;
}
return 0;
}
/* Read configuration from the interface on start */
static int scarlett2_read_configs(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int err, i;
if (scarlett2_has_config_item(private, SCARLETT2_CONFIG_MSD_SWITCH)) {
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_MSD_SWITCH,
1, &private->msd_switch);
if (err < 0)
return err;
}
if (private->firmware_version < info->min_firmware_version) {
usb_audio_err(mixer->chip,
"Focusrite %s firmware version %d is too old; "
"need %d",
private->series_name,
private->firmware_version,
info->min_firmware_version);
return 0;
}
/* no other controls are created if MSD mode is on */
if (private->msd_switch)
return 0;
err = scarlett2_update_input_level(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_pad(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_air(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_phantom(mixer);
if (err < 0)
return err;
err = scarlett2_update_direct_monitor(mixer);
if (err < 0)
return err;
/* the rest of the configuration is for devices with a mixer */
if (!scarlett2_has_mixer(private))
return 0;
err = scarlett2_update_monitor_mix(mixer);
if (err < 0)
return err;
err = scarlett2_update_monitor_other(mixer);
if (err < 0)
return err;
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_STANDALONE_SWITCH)) {
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_STANDALONE_SWITCH,
1, &private->standalone_switch);
if (err < 0)
return err;
}
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_POWER_EXT)) {
err = scarlett2_update_power_status(mixer);
if (err < 0)
return err;
}
err = scarlett2_update_sync(mixer);
if (err < 0)
return err;
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_LINE_OUT_VOLUME)) {
s16 sw_vol[SCARLETT2_ANALOGUE_MAX];
/* read SW line out volume */
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_LINE_OUT_VOLUME,
private->num_line_out, &sw_vol);
if (err < 0)
return err;
for (i = 0; i < private->num_line_out; i++)
private->vol[i] = clamp(
sw_vol[i] + SCARLETT2_VOLUME_BIAS,
0, SCARLETT2_VOLUME_BIAS);
/* read SW mute */
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_MUTE_SWITCH,
private->num_line_out, &private->mute_switch);
if (err < 0)
return err;
for (i = 0; i < private->num_line_out; i++)
private->mute_switch[i] =
!!private->mute_switch[i];
/* read SW/HW switches */
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_SW_HW_SWITCH)) {
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_SW_HW_SWITCH,
private->num_line_out,
&private->vol_sw_hw_switch);
if (err < 0)
return err;
for (i = 0; i < private->num_line_out; i++)
private->vol_sw_hw_switch[i] =
!!private->vol_sw_hw_switch[i];
}
}
err = scarlett2_update_volumes(mixer);
if (err < 0)
return err;
err = scarlett2_update_dim_mute(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_select(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_gain(mixer);
if (err < 0)
return err;
err = scarlett2_update_autogain(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_safe(mixer);
if (err < 0)
return err;
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_PCM_INPUT_SWITCH)) {
err = scarlett2_update_pcm_input_switch(mixer);
if (err < 0)
return err;
}
err = scarlett2_update_mix(mixer);
if (err < 0)
return err;
return scarlett2_usb_get_mux(mixer);
}
/*** Notification Handlers ***/
/* Notify on sync change */
static void scarlett2_notify_sync(struct usb_mixer_interface *mixer)
@ -7146,6 +6741,126 @@ static void scarlett2_notify(struct urb *urb)
}
}
/*** Cleanup/Suspend Callbacks ***/
static void scarlett2_private_free(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
cancel_delayed_work_sync(&private->work);
kfree(private);
mixer->private_data = NULL;
}
static void scarlett2_private_suspend(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
if (cancel_delayed_work_sync(&private->work))
scarlett2_config_save(private->mixer);
}
/*** Initialisation ***/
static void scarlett2_count_io(struct scarlett2_data *private)
{
const struct scarlett2_device_info *info = private->info;
const int (*port_count)[SCARLETT2_PORT_DIRNS] = info->port_count;
int port_type, srcs = 0, dsts = 0;
/* Count the number of mux sources and destinations */
for (port_type = 0;
port_type < SCARLETT2_PORT_TYPE_COUNT;
port_type++) {
srcs += port_count[port_type][SCARLETT2_PORT_IN];
dsts += port_count[port_type][SCARLETT2_PORT_OUT];
}
private->num_mux_srcs = srcs;
private->num_mux_dsts = dsts;
/* Mixer inputs are mux outputs and vice versa.
* Scarlett Gen 4 DSP I/O uses SCARLETT2_PORT_TYPE_MIX but
* doesn't have mixer controls.
*/
private->num_mix_in =
port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_OUT] -
info->dsp_count;
private->num_mix_out =
port_count[SCARLETT2_PORT_TYPE_MIX][SCARLETT2_PORT_IN] -
info->dsp_count;
/* Number of analogue line outputs */
private->num_line_out =
port_count[SCARLETT2_PORT_TYPE_ANALOGUE][SCARLETT2_PORT_OUT];
/* Number of monitor mix controls */
private->num_monitor_mix_ctls =
info->direct_monitor * 2 * private->num_mix_in;
}
/* Look through the interface descriptors for the Focusrite Control
* interface (bInterfaceClass = 255 Vendor Specific Class) and set
* bInterfaceNumber, bEndpointAddress, wMaxPacketSize, and bInterval
* in private
*/
static int scarlett2_find_fc_interface(struct usb_device *dev,
struct scarlett2_data *private)
{
struct usb_host_config *config = dev->actconfig;
int i;
for (i = 0; i < config->desc.bNumInterfaces; i++) {
struct usb_interface *intf = config->interface[i];
struct usb_interface_descriptor *desc =
&intf->altsetting[0].desc;
struct usb_endpoint_descriptor *epd;
if (desc->bInterfaceClass != 255)
continue;
epd = get_endpoint(intf->altsetting, 0);
private->bInterfaceNumber = desc->bInterfaceNumber;
private->bEndpointAddress = epd->bEndpointAddress &
USB_ENDPOINT_NUMBER_MASK;
private->wMaxPacketSize = le16_to_cpu(epd->wMaxPacketSize);
private->bInterval = epd->bInterval;
return 0;
}
return -EINVAL;
}
/* Initialise private data */
static int scarlett2_init_private(struct usb_mixer_interface *mixer,
const struct scarlett2_device_entry *entry)
{
struct scarlett2_data *private =
kzalloc(sizeof(struct scarlett2_data), GFP_KERNEL);
if (!private)
return -ENOMEM;
mutex_init(&private->usb_mutex);
mutex_init(&private->data_mutex);
INIT_DELAYED_WORK(&private->work, scarlett2_config_save_work);
mixer->private_data = private;
mixer->private_free = scarlett2_private_free;
mixer->private_suspend = scarlett2_private_suspend;
private->info = entry->info;
private->config_set = entry->info->config_set;
private->series_name = entry->series_name;
scarlett2_count_io(private);
private->scarlett2_seq = 0;
private->mixer = mixer;
return scarlett2_find_fc_interface(mixer->chip->dev, private);
}
/* Submit a URB to receive notifications from the device */
static int scarlett2_init_notify(struct usb_mixer_interface *mixer)
{
struct usb_device *dev = mixer->chip->dev;
@ -7177,6 +6892,294 @@ static int scarlett2_init_notify(struct usb_mixer_interface *mixer)
return usb_submit_urb(mixer->urb, GFP_KERNEL);
}
/* Cargo cult proprietary initialisation sequence */
static int scarlett2_usb_init(struct usb_mixer_interface *mixer)
{
struct usb_device *dev = mixer->chip->dev;
struct scarlett2_data *private = mixer->private_data;
u8 step0_buf[24];
u8 step2_buf[84];
int err;
if (usb_pipe_type_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;
/* step 0 */
err = scarlett2_usb_rx(dev, private->bInterfaceNumber,
SCARLETT2_USB_CMD_INIT,
step0_buf, sizeof(step0_buf));
if (err < 0)
return err;
/* step 1 */
private->scarlett2_seq = 1;
err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_1, NULL, 0, NULL, 0);
if (err < 0)
return err;
/* step 2 */
private->scarlett2_seq = 1;
err = scarlett2_usb(mixer, SCARLETT2_USB_INIT_2,
NULL, 0,
step2_buf, sizeof(step2_buf));
if (err < 0)
return err;
/* extract 4-byte firmware version from step2_buf[8] */
private->firmware_version = le32_to_cpu(*(__le32 *)(step2_buf + 8));
usb_audio_info(mixer->chip,
"Firmware version %d\n",
private->firmware_version);
return 0;
}
/* Get the flash segment numbers for the App_Settings and App_Upgrade
* segments and put them in the private data
*/
static int scarlett2_get_flash_segment_nums(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
int err, count, i;
struct {
__le32 size;
__le32 count;
u8 unknown[8];
} __packed flash_info;
struct {
__le32 size;
__le32 flags;
char name[16];
} __packed segment_info;
err = scarlett2_usb(mixer, SCARLETT2_USB_INFO_FLASH,
NULL, 0,
&flash_info, sizeof(flash_info));
if (err < 0)
return err;
count = le32_to_cpu(flash_info.count);
/* sanity check count */
if (count < SCARLETT2_SEGMENT_NUM_MIN ||
count > SCARLETT2_SEGMENT_NUM_MAX + 1) {
usb_audio_err(mixer->chip,
"invalid flash segment count: %d\n", count);
return -EINVAL;
}
for (i = 0; i < count; i++) {
__le32 segment_num_req = cpu_to_le32(i);
int flash_segment_id;
err = scarlett2_usb(mixer, SCARLETT2_USB_INFO_SEGMENT,
&segment_num_req, sizeof(segment_num_req),
&segment_info, sizeof(segment_info));
if (err < 0) {
usb_audio_err(mixer->chip,
"failed to get flash segment info %d: %d\n",
i, err);
return err;
}
if (!strncmp(segment_info.name,
SCARLETT2_SEGMENT_SETTINGS_NAME, 16))
flash_segment_id = SCARLETT2_SEGMENT_ID_SETTINGS;
else if (!strncmp(segment_info.name,
SCARLETT2_SEGMENT_FIRMWARE_NAME, 16))
flash_segment_id = SCARLETT2_SEGMENT_ID_FIRMWARE;
else
continue;
private->flash_segment_nums[flash_segment_id] = i;
private->flash_segment_blocks[flash_segment_id] =
le32_to_cpu(segment_info.size) /
SCARLETT2_FLASH_BLOCK_SIZE;
}
/* segment 0 is App_Gold and we never want to touch that, so
* use 0 as the "not-found" value
*/
if (!private->flash_segment_nums[SCARLETT2_SEGMENT_ID_SETTINGS]) {
usb_audio_err(mixer->chip,
"failed to find flash segment %s\n",
SCARLETT2_SEGMENT_SETTINGS_NAME);
return -EINVAL;
}
if (!private->flash_segment_nums[SCARLETT2_SEGMENT_ID_FIRMWARE]) {
usb_audio_err(mixer->chip,
"failed to find flash segment %s\n",
SCARLETT2_SEGMENT_FIRMWARE_NAME);
return -EINVAL;
}
return 0;
}
/* Read configuration from the interface on start */
static int scarlett2_read_configs(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int err, i;
if (scarlett2_has_config_item(private, SCARLETT2_CONFIG_MSD_SWITCH)) {
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_MSD_SWITCH,
1, &private->msd_switch);
if (err < 0)
return err;
}
if (private->firmware_version < info->min_firmware_version) {
usb_audio_err(mixer->chip,
"Focusrite %s firmware version %d is too old; "
"need %d",
private->series_name,
private->firmware_version,
info->min_firmware_version);
return 0;
}
/* no other controls are created if MSD mode is on */
if (private->msd_switch)
return 0;
err = scarlett2_update_input_level(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_pad(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_air(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_phantom(mixer);
if (err < 0)
return err;
err = scarlett2_update_direct_monitor(mixer);
if (err < 0)
return err;
/* the rest of the configuration is for devices with a mixer */
if (!scarlett2_has_mixer(private))
return 0;
err = scarlett2_update_monitor_mix(mixer);
if (err < 0)
return err;
err = scarlett2_update_monitor_other(mixer);
if (err < 0)
return err;
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_STANDALONE_SWITCH)) {
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_STANDALONE_SWITCH,
1, &private->standalone_switch);
if (err < 0)
return err;
}
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_POWER_EXT)) {
err = scarlett2_update_power_status(mixer);
if (err < 0)
return err;
}
err = scarlett2_update_sync(mixer);
if (err < 0)
return err;
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_LINE_OUT_VOLUME)) {
s16 sw_vol[SCARLETT2_ANALOGUE_MAX];
/* read SW line out volume */
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_LINE_OUT_VOLUME,
private->num_line_out, &sw_vol);
if (err < 0)
return err;
for (i = 0; i < private->num_line_out; i++)
private->vol[i] = clamp(
sw_vol[i] + SCARLETT2_VOLUME_BIAS,
0, SCARLETT2_VOLUME_BIAS);
/* read SW mute */
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_MUTE_SWITCH,
private->num_line_out, &private->mute_switch);
if (err < 0)
return err;
for (i = 0; i < private->num_line_out; i++)
private->mute_switch[i] =
!!private->mute_switch[i];
/* read SW/HW switches */
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_SW_HW_SWITCH)) {
err = scarlett2_usb_get_config(
mixer, SCARLETT2_CONFIG_SW_HW_SWITCH,
private->num_line_out,
&private->vol_sw_hw_switch);
if (err < 0)
return err;
for (i = 0; i < private->num_line_out; i++)
private->vol_sw_hw_switch[i] =
!!private->vol_sw_hw_switch[i];
}
}
err = scarlett2_update_volumes(mixer);
if (err < 0)
return err;
err = scarlett2_update_dim_mute(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_select(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_gain(mixer);
if (err < 0)
return err;
err = scarlett2_update_autogain(mixer);
if (err < 0)
return err;
err = scarlett2_update_input_safe(mixer);
if (err < 0)
return err;
if (scarlett2_has_config_item(private,
SCARLETT2_CONFIG_PCM_INPUT_SWITCH)) {
err = scarlett2_update_pcm_input_switch(mixer);
if (err < 0)
return err;
}
err = scarlett2_update_mix(mixer);
if (err < 0)
return err;
return scarlett2_usb_get_mux(mixer);
}
static const struct scarlett2_device_entry *get_scarlett2_device_entry(
struct usb_mixer_interface *mixer)
{