diff options
| author | AnilKumar Ch <anilkumar@ti.com> | 2012-11-21 11:14:10 +0530 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2012-11-27 09:49:31 +0100 |
| commit | 52cde85acc23f61b09dd0376c61eb891125c6990 (patch) | |
| tree | b44c83102549a37b8bd4abae7ace6989e1e6f0c5 /drivers/net/can/c_can/c_can.h | |
| parent | 03f52a0a554210d5049eeed9f1bb29047dc807cb (diff) | |
can: c_can: Add d_can raminit support
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>
Diffstat (limited to 'drivers/net/can/c_can/c_can.h')
| -rw-r--r-- | drivers/net/can/c_can/c_can.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index e5ed41dafa1b..d2e1c21b143f 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -169,6 +169,9 @@ struct c_can_priv { void *priv; /* for board-specific data */ u16 irqstatus; enum c_can_dev_id type; + u32 __iomem *raminit_ctrlreg; + unsigned int instance; + void (*raminit) (const struct c_can_priv *priv, bool enable); }; struct net_device *alloc_c_can_dev(void); |