linux

History

Thierry Reding b5b628ba49 staging/nvec: Use platform_get_irq() As opposed to platform_get_resource(), the platform_get_irq() function has special code to handle driver probe deferral when booting using DT and where an interrupt provider hasn't been registered yet. While this is unlikely to become an issue for nvec, platform_get_irq() is the recommended way to get at interrupts. Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Marc Dietrich <marvin24@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-07-30 17:18:47 -07:00
..
Kconfig	drivers/staging/nvec/Kconfig: remove trailing whitespace	2013-10-30 09:24:40 -07:00
Makefile
nvec_kbd.c	staging: nvec: Convert to use devm_input_allocate	2013-05-16 16:04:31 -07:00
nvec_paz00.c	staging: nvec: insert blank lines after declarations	2014-07-09 12:14:06 -07:00
nvec_power.c	staging: nvec: insert blank lines after declarations	2014-07-09 12:14:06 -07:00
nvec_ps2.c	staging: nvec: insert blank lines after declarations	2014-07-09 12:14:06 -07:00
nvec-keytable.h
nvec.c	staging/nvec: Use platform_get_irq()	2014-07-30 17:18:47 -07:00
nvec.h	staging: nvec: use reset framework	2013-12-11 16:44:10 -07:00
README
TODO	staging: nvec: remove use of clk_get_sys	2013-01-28 11:19:33 -07:00

README

NVEC: An NVidia compliant Embedded Controller Protocol Implemenation

This is an implementation of the NVEC protocol used to communicate with an
embedded controller (EC) via I2C bus. The EC is an I2C master while the host
processor is the I2C slave. Requests from the host processor to the EC are
started by triggering a gpio line.

There is no written documentation of the protocol available to the public,
but the source code[1] of the published nvec reference drivers can be a guide.
This driver is currently only used by the AC100 project[2], but it is likely,
that other Tegra boards (not yet mainlined, if ever) also use it.

[1] e.g. http://nv-tegra.nvidia.com/gitweb/?p=linux-2.6.git;a=tree;f=arch/arm/mach-tegra/nvec;hb=android-tegra-2.6.32
[2] http://gitorious.org/ac100, http://launchpad.net/ac100