class PipeScalerCoefficients

Defined at line 639 of file ../../src/graphics/display/drivers/intel-display/registers-pipe-scaler.h

Pipe Scaler Coefficients Helper

A helper class that software can use to write PipeScalerCoefficientFormat

values to the data register, or read the data register contents back as a

vector.

This helper class only updates the values to the buffered registers, and

software must trigger the double buffer arm register (PipeScalerWindowSize)

by themselves to apply the value update.

TODO(https://fxbug.dev/42071700): Move this alongside with scaler management logic,

as this is a layer above the register definitions.

Public Methods

void PipeScalerCoefficients (hwreg::RegisterAddr<PipeScalerCoefficientIndex> index_address, hwreg::RegisterAddr<PipeScalerCoefficientData> data_address)

Defined at line 641 of file ../../src/graphics/display/drivers/intel-display/registers-pipe-scaler.h

template <typename T>

void WriteToRegister (cpp20::span<const PipeScalerCoefficientFormat> coefficients, T * reg_io)

Write values of `coefficients` to the coefficient array using index / data

registers.

The size of `coefficients` must be 17 * 7 = 119.

Defined at line 649 of file ../../src/graphics/display/drivers/intel-display/registers-pipe-scaler.h

template <typename T>

std::vector<PipeScalerCoefficientFormat> ReadFromRegister (T * reg_io)

Read values of the coefficient array using index / data registers.

Returns a coefficient array of size 17 * 7 = 119.

Defined at line 666 of file ../../src/graphics/display/drivers/intel-display/registers-pipe-scaler.h