can: usb_8dev: add LED trigger support

Add support for canbus activity led indicators on usb_8dev devices by
calling appropriate can_led functions.

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

Signed-off-by: Bernd Krumboeck <krumboeck@universalnet.at>
Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index a9e73fa..f789e6f 100644 (file)
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -33,6 +33,7 @@
 #include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/error.h>
+#include <linux/can/led.h>
 
 /* driver constants */
 #define MAX_RX_URBS                    20
@@ -497,6 +498,8 @@ static void usb_8dev_rx_can_msg(struct usb_8dev_priv *priv,
 
                stats->rx_packets++;
                stats->rx_bytes += cf->can_dlc;
+
+               can_led_event(priv->netdev, CAN_LED_EVENT_RX);
        } else {
                netdev_warn(priv->netdev, "frame type %d unknown",
                         msg->type);
@@ -597,6 +600,8 @@ static void usb_8dev_write_bulk_callback(struct urb *urb)
 
        can_get_echo_skb(netdev, context->echo_index);
 
+       can_led_event(netdev, CAN_LED_EVENT_TX);
+
        /* Release context */
        context->echo_index = MAX_TX_URBS;
 
@@ -819,6 +824,8 @@ static int usb_8dev_open(struct net_device *netdev)
        if (err)
                return err;
 
+       can_led_event(netdev, CAN_LED_EVENT_OPEN);
+
        /* finally start device */
        err = usb_8dev_start(priv);
        if (err) {
@@ -871,6 +878,8 @@ static int usb_8dev_close(struct net_device *netdev)
 
        close_candev(netdev);
 
+       can_led_event(netdev, CAN_LED_EVENT_STOP);
+
        return err;
 }
 
@@ -978,6 +987,8 @@ static int usb_8dev_probe(struct usb_interface *intf,
                         (version>>8) & 0xff, version & 0xff);
        }
 
+       devm_can_led_init(netdev);
+
        return 0;
 
 cleanup_cmd_msg_buffer: