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Commit 881ff67a authored Feb 13, 2011 by Bhupesh Sharma Committed by David S. Miller Feb 13, 2011

can: c_can: Added support for Bosch C_CAN controller

Bosch C_CAN controller is a full-CAN implementation which is compliant
to CAN protocol version 2.0 part A and B. Bosch C_CAN user manual can be
obtained from:

http://www.semiconductors.bosch.de/media/en/pdf/ipmodules_1/c_can/users_manual_c_can.pdf



This patch adds the support for this controller.
The following are the design choices made while writing the controller
driver:
1. Interface Register set IF1 has be used only in the current design.
2. Out of the 32 Message objects available, 16 are kept aside for RX
   purposes and the rest for TX purposes.
3. NAPI implementation is such that both the TX and RX paths function
   in polling mode.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent c9060414

drivers/net/can/Kconfig

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -115,6 +115,8 @@ source "drivers/net/can/mscan/Kconfig"

	source "drivers/net/can/sja1000/Kconfig"		source "drivers/net/can/sja1000/Kconfig"

			source "drivers/net/can/c_can/Kconfig"

	source "drivers/net/can/usb/Kconfig"		source "drivers/net/can/usb/Kconfig"

	source "drivers/net/can/softing/Kconfig"		source "drivers/net/can/softing/Kconfig"

drivers/net/can/Makefile

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -13,6 +13,7 @@ obj-y += softing/

	obj-$(CONFIG_CAN_SJA1000) += sja1000/		obj-$(CONFIG_CAN_SJA1000) += sja1000/
	obj-$(CONFIG_CAN_MSCAN) += mscan/		obj-$(CONFIG_CAN_MSCAN) += mscan/
			obj-$(CONFIG_CAN_C_CAN) += c_can/
	obj-$(CONFIG_CAN_AT91) += at91_can.o		obj-$(CONFIG_CAN_AT91) += at91_can.o
	obj-$(CONFIG_CAN_TI_HECC) += ti_hecc.o		obj-$(CONFIG_CAN_TI_HECC) += ti_hecc.o
	obj-$(CONFIG_CAN_MCP251X) += mcp251x.o		obj-$(CONFIG_CAN_MCP251X) += mcp251x.o

drivers/net/can/c_can/Kconfig

0 → 100644

+15 −0

Original line number	Original line	Diff line number	Diff line
			menuconfig CAN_C_CAN
			tristate "Bosch C_CAN devices"
			depends on CAN_DEV && HAS_IOMEM

			if CAN_C_CAN

			config CAN_C_CAN_PLATFORM
			tristate "Generic Platform Bus based C_CAN driver"
			---help---
			This driver adds support for the C_CAN chips connected to
			the "platform bus" (Linux abstraction for directly to the
			processor attached devices) which can be found on various
			boards from ST Microelectronics (http://www.st.com)
			like the SPEAr1310 and SPEAr320 evaluation boards.
			endif

drivers/net/can/c_can/Makefile

0 → 100644

+8 −0

Original line number	Original line	Diff line number	Diff line
			#
			# Makefile for the Bosch C_CAN controller drivers.
			#

			obj-$(CONFIG_CAN_C_CAN) += c_can.o
			obj-$(CONFIG_CAN_C_CAN_PLATFORM) += c_can_platform.o

			ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG

drivers/net/can/c_can/c_can.c

0 → 100644

+1158 −0

File added.

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