can: ti_hecc: add LED trigger support

Add support for canbus activity led indicators on ti_hecc devices by
calling appropriate can_led functions.

These are only enabled when CONFIG_CAN_LEDS is Y, becomes no-op
otherwise.

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

diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index f898c6363729b2a41be58c824f3f3bb145a95897..f52a9755fb3e2206a6196691789c22262e52b2ae 100644 (file)
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -50,6 +50,7 @@
 
 #include <linux/can/dev.h>
 #include <linux/can/error.h>
+#include <linux/can/led.h>
 #include <linux/can/platform/ti_hecc.h>
 
 #define DRV_NAME "ti_hecc"
@@ -593,6 +594,7 @@ static int ti_hecc_rx_pkt(struct ti_hecc_priv *priv, int mbxno)
        spin_unlock_irqrestore(&priv->mbx_lock, flags);
 
        stats->rx_bytes += cf->can_dlc;
+       can_led_event(priv->ndev, CAN_LED_EVENT_RX);
        netif_receive_skb(skb);
        stats->rx_packets++;
 
@@ -796,6 +798,7 @@ static irqreturn_t ti_hecc_interrupt(int irq, void *dev_id)
                        stats->tx_bytes += hecc_read_mbx(priv, mbxno,
                                                HECC_CANMCF) & 0xF;
                        stats->tx_packets++;
+                       can_led_event(ndev, CAN_LED_EVENT_TX);
                        can_get_echo_skb(ndev, mbxno);
                        --priv->tx_tail;
                }
@@ -851,6 +854,8 @@ static int ti_hecc_open(struct net_device *ndev)
                return err;
        }
 
+       can_led_event(ndev, CAN_LED_EVENT_OPEN);
+
        ti_hecc_start(ndev);
        napi_enable(&priv->napi);
        netif_start_queue(ndev);
@@ -869,6 +874,8 @@ static int ti_hecc_close(struct net_device *ndev)
        close_candev(ndev);
        ti_hecc_transceiver_switch(priv, 0);
 
+       can_led_event(ndev, CAN_LED_EVENT_STOP);
+
        return 0;
 }
 
@@ -961,6 +968,9 @@ static int ti_hecc_probe(struct platform_device *pdev)
                dev_err(&pdev->dev, "register_candev() failed\n");
                goto probe_exit_clk;
        }
+
+       devm_can_led_init(ndev);
+
        dev_info(&pdev->dev, "device registered (reg_base=%p, irq=%u)\n",
                priv->base, (u32) ndev->irq);