linux-toradex.git/include/uapi/linux/can/netlink.h, branch v4.12-rc4

can: dev: add CAN interface API for fixed bitrates

2017-01-24T12:52:00+00:00

Some CAN interfaces only support fixed fixed bitrates. This patch adds a
netlink interface to get the list of the CAN interface's fixed bitrates and
data bitrates.

Inside the driver arrays of supported data- bitrate values are defined.

const u32 drvname_bitrate[] = { 20000, 50000, 100000 };
const u32 drvname_data_bitrate[] = { 200000, 500000, 1000000 };

struct drvname_priv *priv;
priv = netdev_priv(dev);

priv->bitrate_const = drvname_bitrate;
priv->bitrate_const_cnt = ARRAY_SIZE(drvname_bitrate);
priv->data_bitrate_const = drvname_data_bitrate;
priv->data_bitrate_const_cnt = ARRAY_SIZE(drvname_data_bitrate);

Signed-off-by: Marc Kleine-Budde

can: dev: add CAN interface termination API

2017-01-24T12:52:00+00:00

This patch adds a netlink interface to configure the CAN bus termination of
CAN interfaces.

Inside the driver an array of supported termination values is defined:

const u16 drvname_termination[] = { 60, 120, CAN_TERMINATION_DISABLED };

struct drvname_priv *priv;
priv = netdev_priv(dev);

priv->termination_const = drvname_termination;
priv->termination_const_cnt = ARRAY_SIZE(drvname_termination);
priv->termination = CAN_TERMINATION_DISABLED;

And the funtion to set the value has to be defined:

priv->do_set_termination = drvname_set_termination;

Signed-off-by: Oliver Hartkopp 
Reviewed-by: Ramesh Shanmugasundaram 
Signed-off-by: Marc Kleine-Budde

can: m_can: tag current CAN FD controllers as non-ISO

2015-01-15T15:57:59+00:00

During the CAN FD standardization process within the ISO it turned out that
the failure detection capability has to be improved.

The CAN in Automation organization (CiA) defined the already implemented CAN
FD controllers as 'non-ISO' and the upcoming improved CAN FD controllers as
'ISO' compliant. See at http://www.can-cia.com/index.php?id=1937

Finally there will be three types of CAN FD controllers in the future:

1. ISO compliant (fixed)
2. non-ISO compliant (fixed, like the M_CAN IP v3.0.1 in m_can.c)
3. ISO/non-ISO CAN FD controllers (switchable, like the PEAK USB FD)

So the current M_CAN driver for the M_CAN IP v3.0.1 has to expose its non-ISO
implementation by setting the CAN_CTRLMODE_FD_NON_ISO ctrlmode at startup.
As this bit cannot be switched at configuration time CAN_CTRLMODE_FD_NON_ISO
must not be set in ctrlmode_supported of the current M_CAN driver.

Signed-off-by: Oliver Hartkopp 
Cc: linux-stable 
Signed-off-by: Marc Kleine-Budde

can: netlink: Add CAN_CTRLMODE_PRESUME_ACK flag

2014-07-15T07:34:19+00:00

Most CAN controllers have a support for ignoring ACK absence. Some of
them refer to this feature as a self test mode (e. g. SJA1000) and some
include it as a part of a loopback mode (e. g. MCP2510).

Setting the introduced flag via netlink should make CAN controller
perform a successful transmission, even if there is no acknowledgement
(dominant ACK bit) received.

Signed-off-by: Nikita Edward Baruzdin 
Acked-by: Oliver Hartkopp 
Signed-off-by: Marc Kleine-Budde

can: netlink: Remove space before tab

2014-07-15T07:33:57+00:00

Fixes the corresponing checkpatch.pl warning.

Signed-off-by: Nikita Edward Baruzdin 
Acked-by: Oliver Hartkopp 
Signed-off-by: Marc Kleine-Budde

can: unify identifiers to ensure unique include processing

2014-05-19T07:38:24+00:00

Armin pointed me to the fact that the identifier which is used to ensure the
unique include processing in lunux/include/uapi/linux/can.h is CAN_H.
This clashed with his own source as includes from libraries and APIs should
use an underscore '_' at the identifier start.

This patch fixes the protection identifiers in all CAN relavant includes.

Reported-by: Armin Burchardt 
Signed-off-by: Oliver Hartkopp 
Signed-off-by: Marc Kleine-Budde

can: allow to change the device mtu for CAN FD capable devices

2014-03-07T08:18:23+00:00

The configuration for CAN FD depends on CAN_CTRLMODE_FD enabled in the driver
specific ctrlmode_supported capabilities.

The configuration can be done either with the 'fd { on | off }' option in the
'ip' tool from iproute2 or by setting the CAN netdevice MTU to CAN_MTU (16) or
to CANFD_MTU (72).

Signed-off-by: Oliver Hartkopp 
Acked-by: Stephane Grosjean 
Signed-off-by: Marc Kleine-Budde

can: introduce the data bitrate configuration for CAN FD

2014-03-07T08:18:22+00:00

As CAN FD offers a second bitrate for the data section of the CAN frame the
infrastructure for storing and configuring this second bitrate is introduced.
Improved the readability of the if-statement by inserting some newlines.

Signed-off-by: Oliver Hartkopp 
Acked-by: Stephane Grosjean 
Signed-off-by: Marc Kleine-Budde

can: add explicit copyrights to can's netlink header

2013-09-21T13:43:12+00:00

This file is copied to the source code of user space applications (in
this case can-utils) and so it makes sense to mention explicitly their
copyright.

Signed-off-by: Uwe Kleine-König 
Acked-by: Wolfgang Grandegger 
Signed-off-by: Marc Kleine-Budde

UAPI: (Scripted) Disintegrate include/linux/can

2012-10-10T20:24:21+00:00

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Michael Kerrisk 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones 
Signed-off-by: Marc Kleine-Budde