Enum HotPlug 

#[non_exhaustive]
pub enum HotPlug {
    CamPresent,
    CamRemoved,
    CardInserted,
    CardRemoved,
    CardChanged,
}

A CAM/card hot-plug transition. Cam* are real DVB-CA slot-status edges; Card* are best-effort EN 50221 app-layer inference (no card-detect line).

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

CamPresent

The module transitioned absent → present and ready (DVB-CA slot status: CA_CI_MODULE_PRESENT and CA_CI_MODULE_READY both set — Linux uapi linux/dvb/ca.h ca_slot_info.flags). A real hardware signal from SlotInfo, surfaced once on the edge (not on every poll); the driver re-drives the handshake (a fresh Init) so the newly-inserted module gets a clean resource-manager session.

CamRemoved

The module transitioned present → absent (DVB-CA slot status: CA_CI_MODULE_PRESENT clear). A real hardware signal; the driver tears down all session/handshake state so a later re-insert re-handshakes cleanly rather than reusing stale session numbers.

CardInserted

A smart card was inferred to have been inserted into the module.

Best-effort app-layer inference — EN 50221 slots are module-level only; there is no card-detect line (verified against DD ddbridge / cxd2099 driver behaviour). Raised from one of: an ca_info CAID-set transition from empty to non-empty, or a ca_pmt_reply descrambling_ok transition from false to true. Some CAMs instead give a strong signal by resetting the module on card change, which surfaces as CamPresent rather than this variant.

CardRemoved

A smart card was inferred to have been removed from the module.

Best-effort app-layer inference (see CardInserted for why no hardware signal exists). Raised from one of: an ca_info CAID-set transition from non-empty to empty, a ca_pmt_reply descrambling_ok transition from true to false, or MMI menu/list/ enquiry text matching a “no card” style keyword.

CardChanged

The inserted smart card was inferred to have changed (swapped without an intervening removal the runtime observed).

Best-effort app-layer inference (see CardInserted for why no hardware signal exists). Raised when a later ca_info reports a different non-empty CAID set than the last one seen for this module.

Implementations

impl HotPlug

pub fn name(&self) -> &'static str

Stable lowercase spec-ish token for this transition (#204 label convention).

Trait Implementations

impl Clone for HotPlug

fn clone(&self) -> HotPlug

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for HotPlug

impl Debug for HotPlug

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for HotPlug

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for HotPlug

impl PartialEq for HotPlug

fn eq(&self, other: &HotPlug) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for HotPlug