Enum Request 

#[non_exhaustive]
pub enum Request<'a> {
    Destroy,
    AddMode,
    SetResolution {
        width: u32,
        height: u32,
    },
    SetRefreshRate {
        rate: u32,
    },
    SetReducedBlanking {
        reduced: u32,
    },
    AddCvt {
        dot_clock: u32,
        hdisplay: u32,
        hsync_start: u32,
        hsync_end: u32,
        htotal: u32,
        hskew: u32,
        vdisplay: u32,
        vsync_start: u32,
        vsync_end: u32,
        vtotal: u32,
        vscan: u32,
        flags: u32,
    },
}

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.

Destroy

destroy the mode list object

This is a destructor, once sent this object cannot be used any longer.

AddMode

Add the current mode configuration to the list

SetResolution

Fields

width: u32

height: u32

SetRefreshRate

Fields

rate: u32

in milliHz

SetReducedBlanking

whether or not the mode should have reduced blanking

Reduced blanking is an optimization that can reduce bandwidth / timing requirements for a display mode by reducing the time vblank takes. As not all displays support it, it may be desired to still turn it off though (like with CRTs, where full blanking is required).

Fields

reduced: u32

1 for reduced blanking, 0 for normal vblank duration

AddCvt

new mode with CVT timings

Adds a new mode with the specified CVT timings.

Only available since version 22 of the interface

Fields

dot_clock: u32

pixel clock in kHz

hdisplay: u32

horizontal display size

hsync_start: u32

horizontal sync start

hsync_end: u32

horizontal sync end

htotal: u32

horizontal total size

hskew: u32

horizontal skew

vdisplay: u32

vertical display size

vsync_start: u32

vertical sync start

vsync_end: u32

vertical sync end

vtotal: u32

vertical total size

vscan: u32

vertical scan

flags: u32

flags, see DRM_MODE_FLAG_*

Implementations

impl<'a> Request<'a>

pub fn opcode(&self) -> u16

Get the opcode number of this message

Trait Implementations

impl<'a> Debug for Request<'a>

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

Formats the value using the given formatter.