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@@ -52,6 +52,8 @@
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#include <linux/init.h>
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#include <linux/jiffies.h>
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+#include <linux/leds.h>
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+
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#include "arcdevice.h"
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#include "com9026.h"
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@@ -189,6 +191,71 @@ static void arcnet_dump_packet(struct net_device *dev, int bufnum,
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#endif
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+/* Trigger a LED event in response to a ARCNET device event */
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+void arcnet_led_event(struct net_device *dev, enum arcnet_led_event event)
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+{
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+ struct arcnet_local *lp = netdev_priv(dev);
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+ unsigned long led_delay = 350;
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+ unsigned long tx_delay = 50;
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+
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+ switch (event) {
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+ case ARCNET_LED_EVENT_RECON:
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+ led_trigger_blink_oneshot(lp->recon_led_trig,
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+ &led_delay, &led_delay, 0);
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+ break;
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+ case ARCNET_LED_EVENT_OPEN:
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+ led_trigger_event(lp->tx_led_trig, LED_OFF);
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+ led_trigger_event(lp->recon_led_trig, LED_OFF);
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+ break;
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+ case ARCNET_LED_EVENT_STOP:
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+ led_trigger_event(lp->tx_led_trig, LED_OFF);
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+ led_trigger_event(lp->recon_led_trig, LED_OFF);
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+ break;
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+ case ARCNET_LED_EVENT_TX:
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+ led_trigger_blink_oneshot(lp->tx_led_trig,
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+ &tx_delay, &tx_delay, 0);
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+ break;
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+ }
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+}
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+EXPORT_SYMBOL_GPL(arcnet_led_event);
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+
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+static void arcnet_led_release(struct device *gendev, void *res)
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+{
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+ struct arcnet_local *lp = netdev_priv(to_net_dev(gendev));
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+
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+ led_trigger_unregister_simple(lp->tx_led_trig);
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+ led_trigger_unregister_simple(lp->recon_led_trig);
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+}
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+
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+/* Register ARCNET LED triggers for a arcnet device
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+ *
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+ * This is normally called from a driver's probe function
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+ */
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+void devm_arcnet_led_init(struct net_device *netdev, int index, int subid)
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+{
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+ struct arcnet_local *lp = netdev_priv(netdev);
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+ void *res;
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+
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+ res = devres_alloc(arcnet_led_release, 0, GFP_KERNEL);
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+ if (!res) {
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+ netdev_err(netdev, "cannot register LED triggers\n");
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+ return;
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+ }
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+
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+ snprintf(lp->tx_led_trig_name, sizeof(lp->tx_led_trig_name),
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+ "arc%d-%d-tx", index, subid);
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+ snprintf(lp->recon_led_trig_name, sizeof(lp->recon_led_trig_name),
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+ "arc%d-%d-recon", index, subid);
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+
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+ led_trigger_register_simple(lp->tx_led_trig_name,
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+ &lp->tx_led_trig);
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+ led_trigger_register_simple(lp->recon_led_trig_name,
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+ &lp->recon_led_trig);
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+
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+ devres_add(&netdev->dev, res);
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+}
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+EXPORT_SYMBOL_GPL(devm_arcnet_led_init);
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+
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/* Unregister a protocol driver from the arc_proto_map. Protocol drivers
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* are responsible for registering themselves, but the unregister routine
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* is pretty generic so we'll do it here.
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@@ -425,6 +492,7 @@ int arcnet_open(struct net_device *dev)
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netif_start_queue(dev);
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+ arcnet_led_event(dev, ARCNET_LED_EVENT_OPEN);
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return 0;
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out_module_put:
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@@ -438,6 +506,7 @@ int arcnet_close(struct net_device *dev)
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{
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struct arcnet_local *lp = netdev_priv(dev);
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+ arcnet_led_event(dev, ARCNET_LED_EVENT_STOP);
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netif_stop_queue(dev);
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/* flush TX and disable RX */
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@@ -585,6 +654,8 @@ netdev_tx_t arcnet_send_packet(struct sk_buff *skb,
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arc_printk(D_DEBUG, dev, "%s: %d: %s, status: %x\n",
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__FILE__, __LINE__, __func__, lp->hw.status(dev));
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+ arcnet_led_event(dev, ARCNET_LED_EVENT_TX);
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+
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spin_unlock_irqrestore(&lp->lock, flags);
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return retval; /* no need to try again */
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}
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@@ -837,6 +908,7 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id)
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arc_printk(D_RECON, dev, "Network reconfiguration detected (status=%Xh)\n",
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status);
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+ arcnet_led_event(dev, ARCNET_LED_EVENT_RECON);
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/* MYRECON bit is at bit 7 of diagstatus */
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if (diagstatus & 0x80)
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arc_printk(D_RECON, dev, "Put out that recon myself\n");
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