Struct DriverProfile 

#[non_exhaustive]
pub struct DriverProfile {
    pub name: String,
    pub addfb2_modifiers: bool,
    pub async_page_flip: bool,
    pub timestamp_monotonic: bool,
    pub prime_import: bool,
    pub prime_export: bool,
    pub cursor_width: u64,
    pub cursor_height: u64,
    pub fb_damage_clips: bool,
    pub vrr_capable: bool,
    pub psr: PanelSelfRefresh,
}

A device’s capabilities.

One field per DRM_CAP_* the presenter consults, rather than a bitflags type: these are independent questions with independent answers, and a reader checking one against the kernel’s documentation should find the kernel’s name for it.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

name: String

The driver’s name. Informational — see the module docs.

addfb2_modifiers: bool

AddFB2 accepts explicit modifiers.

async_page_flip: bool

Asynchronous page flip is supported.

timestamp_monotonic: bool

Vblank timestamps are CLOCK_MONOTONIC.

prime_import: bool

dma-bufs can be imported.

prime_export: bool

dma-bufs can be exported.

cursor_width: u64

Maximum cursor width. 64 where the driver reports nothing, which is the figure every KMS driver has historically accepted.

cursor_height: u64

Maximum cursor height, defaulted the same way.

fb_damage_clips: bool

At least one plane advertises FB_DAMAGE_CLIPS.

vrr_capable: bool

At least one CRTC exposes VRR_ENABLED.

psr: PanelSelfRefresh

Whether a connected panel might self-refresh. Telemetry only.

Implementations

impl DriverProfile

pub fn probe(device: &Device) -> Result<Self, CoreError>

Probe device.

Capabilities the driver does not report are taken as absent rather than as an error: DRM_CAP_* is additive, and a kernel too old to know a cap answers the same way as one whose hardware lacks it.

Turns on universal planes and atomic for device first, as the reference does: without them the kernel hides primary and cursor planes, and FB_DAMAGE_CLIPS is only shown to atomic clients, so fb_damage_clips would read false on a device that has it. Either being refused leaves the scan to see what it can. The per-object scans are best-effort the same way: a resource list that cannot be read leaves vrr_capable and psr at their defaults rather than failing the probe.

Errors

drmkit_core::CoreError if the driver name cannot be read — which means this is not a DRM node at all.

Trait Implementations

impl Clone for DriverProfile

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DriverProfile

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

Formats the value using the given formatter.

impl Eq for DriverProfile

impl PartialEq for DriverProfile

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DriverProfile