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>

3 files changed, 42 insertions, 1 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;
diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 1c82dd8b896e..d11b0832ccd6 100644
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -560,6 +560,18 @@ static int mscan_do_set_bittiming(struct net_device *dev)
         return 0;
 }
 
+static int mscan_get_berr_counter(const struct net_device *dev,
+                                  struct can_berr_counter *bec)
+{
+        struct mscan_priv *priv = netdev_priv(dev);
+        struct mscan_regs __iomem *regs = priv->reg_base;
+
+        bec->txerr = in_8(&regs->cantxerr);
+        bec->rxerr = in_8(&regs->canrxerr);
+
+        return 0;
+}
+
 static int mscan_open(struct net_device *dev)
 {
         int ret;
@@ -639,8 +651,10 @@ int register_mscandev(struct net_device *dev, int mscan_clksrc)
         else
                 ctl1 &= ~MSCAN_CLKSRC;
 
-        if (priv->type == MSCAN_TYPE_MPC5121)
+        if (priv->type == MSCAN_TYPE_MPC5121) {
+                priv->can.do_get_berr_counter = mscan_get_berr_counter;
                 ctl1 |= MSCAN_BORM; /* bus-off recovery upon request */
+        }
 
         ctl1 |= MSCAN_CANE;
         out_8(&regs->canctl1, ctl1);
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index df809e3f130e..aee925ab0de8 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -458,6 +458,17 @@ static int ti_hecc_do_set_mode(struct net_device *ndev, enum can_mode mode)
         return ret;
 }
 
+static int ti_hecc_get_berr_counter(const struct net_device *ndev,
+                                        struct can_berr_counter *bec)
+{
+        struct ti_hecc_priv *priv = netdev_priv(ndev);
+
+        bec->txerr = hecc_read(priv, HECC_CANTEC);
+        bec->rxerr = hecc_read(priv, HECC_CANREC);
+
+        return 0;
+}
+
 /*
  * ti_hecc_xmit: HECC Transmit
  *
@@ -922,6 +933,7 @@ static int ti_hecc_probe(struct platform_device *pdev)
         priv->can.bittiming_const = &ti_hecc_bittiming_const;
         priv->can.do_set_mode = ti_hecc_do_set_mode;
         priv->can.do_get_state = ti_hecc_get_state;
+        priv->can.do_get_berr_counter = ti_hecc_get_berr_counter;
         priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES;
 
         spin_lock_init(&priv->mbx_lock);