can: bfin_can/ti_hecc/mscan: add missing do_get_berr_counter callback

Cc: Anant Gole <anantgole@ti.com>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 349e0fabb63a..e1e7f9da3da5 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -224,6 +224,20 @@ 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);
@@ -509,6 +523,7 @@ 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;