This patchset introduces support for the technologic version of the
SJA1000. Access to IP's registers are proxied through a window,
requiring two bus accesses to read or write a register. These accesses
must be protected by a spinlock to prevent race conditions. Currently,
there is no easy way to allocate and initialize this spinlock.
SJA1000 already provides a way to allocate private data, but
sja1000_platform.c makes no use of it.
Patch 1 adds the capability to allocate and initialize private data on a
per-compatible basis in sja1000_platform.c.
Patch 2 updates device tree documentation to add the technologic
version.
Patch 3 updates the driver to implement the technologic version
Changes in v2:
- added a patch to allocate and initialize private data
- changed device tree documentation
- added a spinlock to protect bus accesses
- changed sp_{read,write}_reg16 to io{read,write}16
Damien Riegel (3):
can: sja1000: of: add per-compatible init hook
can: sja1000: add documentation for Technologic Systems version
can: sja1000: of: add compatibility with Technologic Systems version
.../devicetree/bindings/net/can/sja1000.txt | 3 +-
drivers/net/can/sja1000/sja1000_platform.c | 86 +++++++++++++++++++++-
2 files changed, 86 insertions(+), 3 deletions(-)
--
2.5.0
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