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can: peak_usb: add adapter BEC callback definition 

Add the definition of a new callback that enable any PEAK-System CAN USB
adapter to grant read access to its Bus Error Counters value. This ability is
not supported by all the PEAK-System adapters, thus, for those, the callback
pointer will be initiaized to NULL, which is correct regarding the linux-can
device driver specs.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Stephane Grosjean 2015-01-23 11:31:20 +01:00 committed by Marc Kleine-Budde
parent e3c5ea60b4
commit e3629f5657
2 changed files with 3 additions and 0 deletions
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1
drivers/net/can/usb/peak_usb/pcan_usb_core.c
View File

@ -750,6 +750,7 @@ static int peak_usb_create_dev(const struct peak_usb_adapter *peak_usb_adapter,
dev->can.bittiming_const = &peak_usb_adapter->bittiming_const;
dev->can.do_set_bittiming = peak_usb_set_bittiming;
dev->can.do_set_mode = peak_usb_set_mode;
dev->can.do_get_berr_counter = peak_usb_adapter->do_get_berr_counter;
dev->can.ctrlmode_supported = peak_usb_adapter->ctrlmode_supported;
netdev->netdev_ops = &peak_usb_netdev_ops;

2
drivers/net/can/usb/peak_usb/pcan_usb_core.h
View File

@ -67,6 +67,8 @@ struct peak_usb_adapter {
int (*dev_stop)(struct peak_usb_device *dev);
int (*dev_restart_async)(struct peak_usb_device *dev, struct urb *urb,
u8 *buf);
int (*do_get_berr_counter)(const struct net_device *netdev,
struct can_berr_counter *bec);
u8 ep_msg_in;
u8 ep_msg_out[PCAN_USB_MAX_CHANNEL];
u8 ts_used_bits;