Struct MtkUsbManager 

pub struct MtkUsbManager {
    metadata: DeviceMetadata,
    udc: String,
}

USB mass storage manager for MTK platforms.

This implementation configures the USB gadget via ConfigFS, which is the modern approach for MTK-based Kobo devices. It creates the gadget configuration, sets up the mass storage function, and binds to the UDC.

Fields

metadata: DeviceMetadata

udc: String

Implementations

impl MtkUsbManager

pub fn new(metadata: DeviceMetadata) -> Result<Self, UsbError>

Creates a new MTK USB manager.

Discovers the UDC and prepares for gadget setup. No USB operations are performed until enable is called.

Errors

Returns UsbError::Udc if no UDC is available or the UDC directory cannot be read.

fn create_gadget_dirs(&self) -> Result<(), UsbError>

Creates the ConfigFS gadget directory structure.

fn write_gadget_config(&self) -> Result<(), UsbError>

Writes gadget configuration to ConfigFS.

All values are written with a trailing \n to match echo behaviour from the kernel documentation examples.

fn activate_function(&self) -> Result<(), UsbError>

Creates symlinks to activate the mass storage function.

fn bind_udc(&self) -> Result<(), UsbError>

Binds the gadget to the UDC to enable USB.

The UDC name is written with a trailing \n to match echo behaviour from the kernel documentation examples.

fn unbind_udc(&self) -> Result<(), UsbError>

Unbinds the gadget from the UDC.

Writes a bare newline to the UDC attribute, which the kernel interprets as clearing the binding.

fn deactivate_function(&self) -> Result<(), UsbError>

Removes the function symlink.

fn remove_gadget_dirs(&self) -> Result<(), UsbError>

Removes the gadget directory structure.

Trait Implementations

impl KoboUsbOperations for MtkUsbManager

fn metadata(&self) -> &DeviceMetadata

Provides access to the device metadata.

fn sync_and_drop_caches(&self) -> Result<(), UsbError>

Syncs filesystem buffers and drops caches.

fn is_mounted(&self, mount_point: &str) -> Result<bool, UsbError>

Checks if a mount point is currently mounted.

fn unmount_partition(&self, mount_point: &str) -> Result<(), UsbError>

Unmounts a partition lazily.

fn prepare_for_usb_share(&self) -> Result<(), UsbError>

Prepares the system for USB mass storage mode.

fn remount_partitions(&self) -> Result<(), UsbError>

Remounts partitions after USB sharing is disabled.

fn check_filesystem(&self) -> Result<(), UsbError>

Runs filesystem check and repair.

impl UsbManager for MtkUsbManager

fn enable(&self) -> Result<(), UsbError>

Enables USB mass storage mode.

fn disable(&self) -> Result<(), UsbError>

Disables USB mass storage mode.