diff options
| author | Mitja Spes <mitja@lxnav.com> | 2013-01-08 15:44:53 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2013-01-08 15:50:18 +0100 |
| commit | 1b59090a47101b4bf379d2c35986ad3f0bcb2aa1 (patch) | |
| tree | c9d0eecc9eaf357ce7d61d69e1215ce4facb4f5a /drivers/net | |
| parent | d68e547b448141f905346f5fa28e0bc8161a9445 (diff) | |
can: mcp251x: add BERR counter functionality
Add BERR counter functionality to MCP251x driver.
Signed-off-by: Mitja Spes <mitja@lxnav.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/can/mcp251x.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c index 330140ee266d..535e4032da2b 100644 --- a/drivers/net/can/mcp251x.c +++ b/drivers/net/can/mcp251x.c @@ -593,6 +593,18 @@ static int mcp251x_do_set_bittiming(struct net_device *net) return 0; } +static int mcp251x_get_berr_counter(const struct net_device *dev, struct can_berr_counter *bec) +{ + struct mcp251x_priv *priv = netdev_priv(dev); + struct spi_device *spi = priv->spi; + uint8_t tec,rec; + + mcp251x_read_2regs(spi, TEC, &tec, &rec); + bec->txerr = tec; + bec->rxerr = rec; + return 0; +} + static int mcp251x_setup(struct net_device *net, struct mcp251x_priv *priv, struct spi_device *spi) { @@ -997,6 +1009,7 @@ static int __devinit mcp251x_can_probe(struct spi_device *spi) priv = netdev_priv(net); priv->can.bittiming_const = &mcp251x_bittiming_const; priv->can.do_set_mode = mcp251x_do_set_mode; + priv->can.do_get_berr_counter = mcp251x_get_berr_counter; priv->can.clock.freq = pdata->oscillator_frequency / 2; priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LOOPBACK | CAN_CTRLMODE_LISTENONLY; |