linux

History

Xidong Wang a5a9855420 staging: nvec: check return value In nvec_kbd_probe(), the return value of devm_input_allocate_device() should be checked before it is used. Signed-off-by: Xidong Wang <wangxidong_97@163.com> Link: https://lore.kernel.org/r/1576648598-12257-1-git-send-email-wangxidong_97@163.com Acked-by: Marc Dietrich <marvin24@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-12-19 19:23:29 +01:00
..
Kconfig	staging: nvec: Fix Kconfig indentation	2019-11-20 15:20:29 +01:00
Makefile
nvec_kbd.c	staging: nvec: check return value	2019-12-19 19:23:29 +01:00
nvec_paz00.c
nvec_power.c
nvec_ps2.c
nvec-keytable.h
nvec.c	staging: nvec: make use of devm_platform_ioremap_resource	2019-09-12 10:35:50 +01:00
nvec.h	staging: nvec: convert to use GPIO descriptors	2018-04-23 14:38:00 +02:00
README
TODO	Revert "staging: nvec: Augment TODO file with GPIO work item"	2018-04-23 18:49:51 +02:00

README

NVEC: An NVidia compliant Embedded Controller Protocol Implementation

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