How to drive a LCD on ARM based linux System

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terasic_mtl

TERASIC_MTL(4)						   BSD Kernel Interfaces Manual 					    TERASIC_MTL(4)

NAME

     terasic_mtl -- driver for the Terasic/Cambridge Multi-Touch LCD device

SYNOPSIS

     device terasic_mtl

     In /boot/device.hints:
     hint.terasic_mtl.0.at="nexus0"
     hint.terasic_mtl.0.reg_maddr=0x70400000
     hint.terasic_mtl.0.reg_msize=0x1000
     hint.terasic_mtl.0.pixel_maddr=0x70000000
     hint.terasic_mtl.0.pixel_msize=0x177000
     hint.terasic_mtl.0.text_maddr=0x70177000
     hint.terasic_mtl.0.text_msize=0x2000

DESCRIPTION

     The terasic_mtl device driver provides support for the Terasic Multi-Touch LCD combined as controlled by a University of Cambridge's IP Core.
     Three device nodes are instantiated, representing various services supported by the device:

     terasic_regX    Memory-mapped register interface, including touch screen input.

     terasic_pixelX  Memory-mapped pixel-oriented frame buffer.

     terasic_textX   Memory-mapped text-oriented frame buffer.

     terasic_mtl devices are also attached to the syscons(4) framework, which implements a VT-compatible terminal connected to the tty(4) frame-
     work.  ttyvX device nodes may be added to ttys(5) in order to launch login(1) sessions at boot.

     Register, text, and pixel devices may be accessed using read(2) and write(2) system calls, and also memory mapped using mmap(2).

SEE ALSO

     login(1), ioctl(2), mmap(2), poll(2), read(2), write(2), syscons(4), tty(4), ttys(5)

HISTORY

     The terasic_mtl device driver first appeared in FreeBSD 10.0.

AUTHORS

     The terasic_mtl device driver and this manual page were developed by SRI International and the University of Cambridge Computer Laboratory
     under DARPA/AFRL contract (FA8750-10-C-0237) (``CTSRD''), as part of the DARPA CRASH research programme.  This device driver was written by
     Robert N. M. Watson.

BUGS

     The syscons(4) attachment does not support the hardware cursor feature.

     A more structured interface to control registers using the ioctl(2) system call, would sometimes be preferable to memory mapping.	For touch
     screen input, it would be highly desirable to offer a streaming interface whose events can be managed using poll(2) and related system calls,
     with the kernel performing polling rather than the userspace application.

     terasic_mtl supports only a nexus bus attachment, which is appropriate for system-on-chip busses such as Altera's Avalon bus.  If the IP core
     is configured off of another bus type, then additional bus attachments will be required.

BSD
								  August 18, 2012							       BSD

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