can: grcan: Add device driver for GRCAN and GRHCAN cores

This driver supports GRCAN and CRHCAN CAN controllers available in the GRLIB
VHDL IP core library.

Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 35 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-net-grcan b/Documentation/ABI/testing/sysfs-class-net-grcan
new file mode 100644
index 000000000000..f418c92ca555
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-net-grcan
@@ -0,0 +1,35 @@
+
+What:           /sys/class/net/<iface>/grcan/enable0
+Date:           October 2012
+KernelVersion:  3.8
+Contact:        Andreas Larsson <andreas@gaisler.com>
+Description:
+                Hardware configuration of physical interface 0. This file reads
+                and writes the "Enable 0" bit of the configuration register.
+                Possible values: 0 or 1. See the GRCAN chapter of the GRLIB IP
+                core library documentation for details. The default value is 0
+                or set by the module parameter grcan.enable0 and can be read at
+                /sys/module/grcan/parameters/enable0.
+
+What:           /sys/class/net/<iface>/grcan/enable1
+Date:           October 2012
+KernelVersion:  3.8
+Contact:        Andreas Larsson <andreas@gaisler.com>
+Description:
+                Hardware configuration of physical interface 1. This file reads
+                and writes the "Enable 1" bit of the configuration register.
+                Possible values: 0 or 1. See the GRCAN chapter of the GRLIB IP
+                core library documentation for details. The default value is 0
+                or set by the module parameter grcan.enable1 and can be read at
+                /sys/module/grcan/parameters/enable1.
+
+What:           /sys/class/net/<iface>/grcan/select
+Date:           October 2012
+KernelVersion:  3.8
+Contact:        Andreas Larsson <andreas@gaisler.com>
+Description:
+                Configuration of which physical interface to be used. Possible
+                values: 0 or 1. See the GRCAN chapter of the GRLIB IP core
+                library documentation for details. The default value is 0 or is
+                set by the module parameter grcan.select and can be read at
+                /sys/module/grcan/parameters/select.