Enum PipelineError 

#[non_exhaustive]
pub enum PipelineError {
    NoPipeline,
    NotALut(Stage),
    Core(CoreError),
    NoSuchStage(Stage),
    WrongLutSize {
        stage: Stage,
        expected: u32,
        given: usize,
    },
}

What can go wrong programming the pipeline.

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.

NoPipeline

The CRTC exposes none of the three stages, so there is nothing to program. Older and simpler display controllers.

NotALut(Stage)

A LUT was asked for on the matrix stage, which does not take one.

Core(CoreError)

The kernel refused.

NoSuchStage(Stage)

The CRTC does not have this stage.

Common and not a defect: plenty of drivers expose one or two of the three. A caller checks capabilities and works with what is there.

WrongLutSize

A custom LUT was the wrong length.

The driver states exactly how many entries it reads, and a blob of any other length is rejected – which fails the whole atomic commit, not just this property.

Fields

stage: Stage

Which stage.

expected: u32

What the driver asks for.

given: usize

What was supplied.

Trait Implementations

impl Debug for PipelineError

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

Formats the value using the given formatter.

impl Display for PipelineError

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

Formats the value using the given formatter.

impl Error for PipelineError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<CoreError> for PipelineError

fn from(source: CoreError) -> Self

Converts to this type from the input type.