u-boot.git/include/cros_ec.h, branch v2018.09

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

cros_ec: Convert to support live tree

2017-06-01T13:03:11+00:00

Convert this driver to support the live device tree and remove the old
fdtdec support.

The keyboard is not yet converted.

Signed-off-by: Simon Glass

dm: core: Add a place to put extra device-tree reading functions

2017-06-01T13:03:07+00:00

Some functions deal with structured data rather than simple data types.
It makes sense to have these in their own file. For now this just has a
function to read a flashmap entry. Move the data types also.

Signed-off-by: Simon Glass

cmd: crosec: Move cros_ec_decode_region helper to cmd/cros_ec.c

2016-12-03T04:04:48+00:00

The cros_ec_decode_region() function is only used in combination
with the crosec cmds. Move the function to the correct place.

Signed-off-by: Moritz Fischer 
Cc: Simon Glass 
Cc: Masahiro Yamada 
Cc: u-boot@lists.denx.de
Acked-by: Simon Glass

cmd: cros_ec: Move crosec commands to cmd subdirectory

2016-10-11T16:17:08+00:00

Move crosec commands from drivers/misc/cros_ec.c to
cmd/cros_ec.c

Acked-by: Simon Glass 
Signed-off-by: Moritz Fischer 
Cc: Simon Glass 
Cc: Heiko Schocher 
Cc: Bin Meng 
Cc: Miao Yan 
Cc: Masahiro Yamada 
Cc: Stefan Roese 
Cc: Przemyslaw Marczak 
Cc: Maxime Ripard 
Cc: Nishanth Menon 
Cc: u-boot@lists.denx.de

cros_ec: Honor the google,remote-bus dt property

2016-10-08T13:33:36+00:00

Boards where ECs that use a I2C port != 0 specify this in the
devicetree file via the google,remote-bus property.
Previously this was ignored and hardcoded to port 0.

Signed-off-by: Moritz Fischer 
Cc: Simon Glass 
Cc: Heiko Schocher 
Cc: u-boot@lists.denx.de
Acked-by: Simon Glass

cros_ec: Use udevice instead of cros_ec_dev for keyboard functions

2015-11-20T03:13:40+00:00

In preparation for converting the cros_ec keyboard driver to driver model,
adjust the cros_ec functions it will use to use a normal struct udevice.

Signed-off-by: Simon Glass

cros_ec: Remove the old tunnel code

2015-08-06T03:06:16+00:00

This is not needed with driver mode. Remove it.

Signed-off-by: Simon Glass

cros_ec: Support the LDO access method used by spring

2015-08-06T03:06:11+00:00

Add a driver to support the special LDO access used by spring. This is a
custom method in the cros_ec protocol - it does not use an I2C
pass-through.

There are two implementation choices:

1. Write a special LDO driver which can talk across the EC. Duplicate all
the logic from TPS65090 for retrying when the LDO fails to come up.

2. Write a special I2C bus driver which pretends to be a TPS65090 and
transfers reads and writes using the LDO message.

Either is distasteful. The latter method is chosen since it results in less
code duplication and a fairly simple (30-line) implementation of the core
logic.

The crosec 'ldo' subcommand could be removed (since i2c md/mw will work
instead) but is retained as a convenience.

Signed-off-by: Simon Glass

dm: cros_ec: Convert the I2C tunnel code to use driver model

2015-08-06T03:06:11+00:00

The Chrome OS EC supports tunnelling through to an I2C bus on the EC. This
currently uses a copy of the I2C command code and a special 'crosec'
sub-command.

With driver model we can define an I2C bus which tunnels through to the EC,
and use the normal 'i2c' command to access it. This simplifies the code and
removes some duplication.

Add an I2C driver which tunnels through to the EC. Adjust the EC code to
support binding child devices so that it can be set up. Adjust the existing
I2C xfer function to fit driver model better.

For now the old code remains to allow things to still work. It will be
removed in a later patch once the new flow is fully enabled.

Signed-off-by: Simon Glass