linux-kernel - [PATCH 10/10] can: usb_8dev: add LED trigger support

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Date:	Tue, 18 Dec 2012 18:51:04 +0100
From:	Fabio Baltieri <fabio.baltieri@...il.com>
To:	Marc Kleine-Budde <mkl@...gutronix.de>, linux-can@...r.kernel.org
Cc:	Kurt Van Dijck <kurt.van.dijck@....be>,
	Wolfgang Grandegger <wg@...ndegger.com>,
	Oliver Hartkopp <socketcan@...tkopp.net>,
	Bernd Krumboeck <b.krumboeck@...il.com>,
	linux-kernel@...r.kernel.org,
	Bernd Krumboeck <krumboeck@...versalnet.at>,
	Fabio Baltieri <fabio.baltieri@...il.com>
Subject: [PATCH 10/10] can: usb_8dev: add LED trigger support

From: Bernd Krumboeck <b.krumboeck@...il.com>

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@...versalnet.at>
Signed-off-by: Fabio Baltieri <fabio.baltieri@...il.com>
---
 drivers/net/can/usb/usb_8dev.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index 660b4f87..b4bb1a6 100644
--- 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			10
@@ -504,6 +505,8 @@ 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);
@@ -606,6 +609,8 @@ 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;
 
@@ -830,6 +835,8 @@ 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) {
@@ -882,6 +889,8 @@ static int usb_8dev_close(struct net_device *netdev)
 
 	close_candev(netdev);
 
+	can_led_event(netdev, CAN_LED_EVENT_STOP);
+
 	return err;
 }
 
@@ -990,6 +999,8 @@ 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:
-- 
1.7.12.1

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