class DisplayPll

Defined at line 68 of file ../../src/graphics/display/drivers/intel-display/dpll.h

Manages a PLL (Phase-Locked Loop circuit) that serves as a DDI clock source.

This is an abstract base class. Subclasses implement the configuration

protocols, which are specific to each type of PLL.

Public Methods

void ~DisplayPll ()

Defined at line 70 of file ../../src/graphics/display/drivers/intel-display/dpll.h

void DisplayPll (const DisplayPll & )

Defined at line 72 of file ../../src/graphics/display/drivers/intel-display/dpll.h

void DisplayPll (DisplayPll && )

Defined at line 73 of file ../../src/graphics/display/drivers/intel-display/dpll.h

DisplayPll & operator= (const DisplayPll & )

Defined at line 74 of file ../../src/graphics/display/drivers/intel-display/dpll.h

DisplayPll & operator= (DisplayPll && )

Defined at line 75 of file ../../src/graphics/display/drivers/intel-display/dpll.h

const std::string & name ()

Defined at line 95 of file ../../src/graphics/display/drivers/intel-display/dpll.h

PllId pll_id ()

Defined at line 96 of file ../../src/graphics/display/drivers/intel-display/dpll.h

const DdiPllConfig & config ()

The configuration that the PLL is locked to.

Returns an empty configuration if the PLL is disabled.

Defined at line 101 of file ../../src/graphics/display/drivers/intel-display/dpll.h

bool Enable (const DdiPllConfig & pll_config)

Configures this PLL and waits for it to lock.

Returns true if the PLL is locked to the desired configuration. Returns

false if something went wrong.

`pll_config` must be valid.

This method is not idempotent. The PLL must not already be enabled.

Defined at line 122 of file ../../src/graphics/display/drivers/intel-display/dpll.cc

bool Disable ()

Disables this PLL. Also powers off the PLL, if possible.

The PLL must not be used as a clock source by any of the powered-up DDIs.

This method is not idempotent. The PLL must be locked to a configuration

by a successful Enable() call.

Defined at line 153 of file ../../src/graphics/display/drivers/intel-display/dpll.cc

void DisplayPll (PllId pll_id)

Defined at line 74 of file ../../src/graphics/display/drivers/intel-display/dpll.cc

bool DoEnable (const DdiPllConfig & pll_config)

Same API as `Enable()`.

Implementations can assume that logging and state updating are taken care

of, and focus on the register-level configuration.

bool DoDisable ()

Same API as `Disable()`.

Implementations can assume that logging and state updating are taken care

of, and focus on the register-level configuration.

void set_config (const DdiPllConfig & config)

See `config()` for details.

Defined at line 119 of file ../../src/graphics/display/drivers/intel-display/dpll.h