[PATCH v3 0/1] can: ucan: add driver for Theobroma Systems UCAN devices

[Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>]

This is v3 of the Theobroma Systems CAN/USB adapter driver
upstreaming effort.

Featured v2 -> v3 changes:
* count error frames as data packets
* use canid_t for all can ids
* use BIT(x) instead of (1 << x)
* use __le16 / __le32 for little-endian fields
* add spinlock around context allocation (fixes a possible race)
* fix comment style
* use WARN_ON return value
* fix state logic bug that did not allow return to ERROR_ACTIVE
* drop echo_index from context_array (not needed)
* rename "tx_contexts" -> "context_array" to prevent confusion
* add __func__ to all errors and warnings, and to info where it made sense

Jakob Unterwurzacher (1):
  can: ucan: add driver for Theobroma Systems UCAN devices

 Documentation/networking/can_ucan_protocol.rst |  315 +++++
 Documentation/networking/index.rst             |    1 +
 drivers/net/can/usb/Kconfig                    |   10 +
 drivers/net/can/usb/Makefile                   |    1 +
 drivers/net/can/usb/ucan.c                     | 1628 ++++++++++++++++++++++++
 5 files changed, 1955 insertions(+)
 create mode 100644 Documentation/networking/can_ucan_protocol.rst
 create mode 100644 drivers/net/can/usb/ucan.c

-- 
2.11.0

Cc: Martin Elshuber <martin.elshuber@theobroma-systems.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: linux-can@vger.kernel.org
Cc: linux-kernel@vger.kernel.org