Unit PL110

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Description

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The ARM PrimeCell PL110 Color LCD Controller is a AMBA compliant module that provides LCD display support for both TFT and STN displays in a variety of configurations.

While the controller supports TFT displays it differs from other TFT display controllers because it has a DMA interface to system memory rather than using SPI or other serial transfer protocols.

Currently this driver only supports the setup required for the QEMU VersatilePB target however it is possible to support additional configurations by adding more variations of the PL110FramebufferCreate functions (eg PL110FramebufferCreateSTN etc).

Note: The driver does not include support for FRAMEBUFFER_FLAG_SYNC as the QEMU emulation of the device does not provide interrupt support at present.

Constants

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To be documented

Type definitions

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To be documented

Public variables

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To be documented

Function declarations

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PL110 functions

function PL110FramebufferCreateVGA(Address:LongWord; const Name:String; Rotation,Width,Height,Depth:LongWord):PFramebufferDevice;

Description: Create, register and allocate a new PL110 Framebuffer device which can be accessed using the framebuffer API

Address	The address of the PL110 registers
Name	The text description of this device which will show in the device list (Optional)
Rotation	The rotation value for the framebuffer device (eg FRAMEBUFFER_ROTATION_180)
Width	The width of the framebuffer in pixels
Height	The height of the framebuffer in pixels
Depth	The color depth (bits per pixel) for the framebuffer (eg FRAMEBUFFER_DEPTH_16)
Return	Pointer to the new Framebuffer device or nil if the framebuffer device could not be created

function PL110FramebufferCreateSVGA(Address:LongWord; const Name:String; Rotation,Width,Height,Depth:LongWord):PFramebufferDevice;

Description: Create, register and allocate a new PL110 Framebuffer device which can be accessed using the framebuffer API

Address	The address of the PL110 registers
Name	The text description of this device which will show in the device list (Optional)
Rotation	The rotation value for the framebuffer device (eg FRAMEBUFFER_ROTATION_180)
Width	The width of the framebuffer in pixels
Height	The height of the framebuffer in pixels
Depth	The color depth (bits per pixel) for the framebuffer (eg FRAMEBUFFER_DEPTH_16)
Return	Pointer to the new Framebuffer device or nil if the framebuffer device could not be created

function PL110FramebufferDestroy(Framebuffer:PFramebufferDevice):LongWord;

Description: Release, deregister and destroy a PL110 Framebuffer device created by this driver

Framebuffer	The Framebuffer device to destroy
Return	ERROR_SUCCESS if completed or another error code on failure

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