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path: root/drivers/net/can/bfin_can.c
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Diffstat (limited to 'drivers/net/can/bfin_can.c')
-rw-r--r--drivers/net/can/bfin_can.c36
1 files changed, 23 insertions, 13 deletions
diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 349e0fabb63a..3f88473423e9 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -82,8 +82,7 @@ static int bfin_can_set_bittiming(struct net_device *dev)
bfin_write(&reg->clock, clk);
bfin_write(&reg->timing, timing);
- dev_info(dev->dev.parent, "setting CLOCK=0x%04x TIMING=0x%04x\n",
- clk, timing);
+ netdev_info(dev, "setting CLOCK=0x%04x TIMING=0x%04x\n", clk, timing);
return 0;
}
@@ -108,8 +107,7 @@ static void bfin_can_set_reset_mode(struct net_device *dev)
while (!(bfin_read(&reg->control) & CCA)) {
udelay(10);
if (--timeout == 0) {
- dev_err(dev->dev.parent,
- "fail to enter configuration mode\n");
+ netdev_err(dev, "fail to enter configuration mode\n");
BUG();
}
}
@@ -165,8 +163,7 @@ static void bfin_can_set_normal_mode(struct net_device *dev)
while (bfin_read(&reg->status) & CCA) {
udelay(10);
if (--timeout == 0) {
- dev_err(dev->dev.parent,
- "fail to leave configuration mode\n");
+ netdev_err(dev, "fail to leave configuration mode\n");
BUG();
}
}
@@ -224,6 +221,20 @@ static int bfin_can_set_mode(struct net_device *dev, enum can_mode mode)
return 0;
}
+static int bfin_can_get_berr_counter(const struct net_device *dev,
+ struct can_berr_counter *bec)
+{
+ struct bfin_can_priv *priv = netdev_priv(dev);
+ struct bfin_can_regs __iomem *reg = priv->membase;
+
+ u16 cec = bfin_read(&reg->cec);
+
+ bec->txerr = cec >> 8;
+ bec->rxerr = cec;
+
+ return 0;
+}
+
static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct bfin_can_priv *priv = netdev_priv(dev);
@@ -331,7 +342,7 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
if (isrc & RMLIS) {
/* data overrun interrupt */
- dev_dbg(dev->dev.parent, "data overrun interrupt\n");
+ netdev_dbg(dev, "data overrun interrupt\n");
cf->can_id |= CAN_ERR_CRTL;
cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
stats->rx_over_errors++;
@@ -339,7 +350,7 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
}
if (isrc & BOIS) {
- dev_dbg(dev->dev.parent, "bus-off mode interrupt\n");
+ netdev_dbg(dev, "bus-off mode interrupt\n");
state = CAN_STATE_BUS_OFF;
cf->can_id |= CAN_ERR_BUSOFF;
can_bus_off(dev);
@@ -347,13 +358,12 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
if (isrc & EPIS) {
/* error passive interrupt */
- dev_dbg(dev->dev.parent, "error passive interrupt\n");
+ netdev_dbg(dev, "error passive interrupt\n");
state = CAN_STATE_ERROR_PASSIVE;
}
if ((isrc & EWTIS) || (isrc & EWRIS)) {
- dev_dbg(dev->dev.parent,
- "Error Warning Transmit/Receive Interrupt\n");
+ netdev_dbg(dev, "Error Warning Transmit/Receive Interrupt\n");
state = CAN_STATE_ERROR_WARNING;
}
@@ -509,6 +519,7 @@ struct net_device *alloc_bfin_candev(void)
priv->can.bittiming_const = &bfin_can_bittiming_const;
priv->can.do_set_bittiming = bfin_can_set_bittiming;
priv->can.do_set_mode = bfin_can_set_mode;
+ priv->can.do_get_berr_counter = bfin_can_get_berr_counter;
priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
return dev;
@@ -636,8 +647,7 @@ static int bfin_can_suspend(struct platform_device *pdev, pm_message_t mesg)
while (!(bfin_read(&reg->intr) & SMACK)) {
udelay(10);
if (--timeout == 0) {
- dev_err(dev->dev.parent,
- "fail to enter sleep mode\n");
+ netdev_err(dev, "fail to enter sleep mode\n");
BUG();
}
}