can: c_can: Add d_can raminit support

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Add D_CAN raminit support to C_CAN driver to enable D_CAN RAM,
which holds all the message objects during transmission or
receiving of data. This initialization/de-initialization should
be done in synchronous with D_CAN clock.

In case of AM335X-EVM (current user of D_CAN driver) message RAM is
controlled through control module register for both instances. So
control module register details is required to initialization or
de-initialization of message RAM according to instance number.

Control module memory resource is obtained from D_CAN dt node and
instance number obtained from device tree aliases node.

This patch was tested on AM335x-EVM along with pinctrl data addition
patch, d_can dt aliases addition and control module data addition.
pinctrl data addition is not added to am335x-evm.dts (only supports
CPLD profile#0) because d_can1 is supported under CPLD profile#1.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
[mkl: fix instance for non DT in probe, cleaned up raminit]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

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This commit is contained in:

AnilKumar Ch 2012-11-21 11:14:10 +05:30 • committed by Marc Kleine-Budde

parent 03f52a0a55

commit 52cde85acc

3 changed files with 42 additions and 1 deletions

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12

drivers/net/can/c_can/c_can.c

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3

drivers/net/can/c_can/c_can.h

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28

drivers/net/can/c_can/c_can_platform.c

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