[Feature: 1336] kernel/wr_nic: disable SFP when interface is down

Keep low enable pin on SFP when the interface is down. This commit makes the wrs_port_tx_control tool not needed anymore. Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

[Feature: 1336] kernel/wr_nic: disable SFP when interface is down
Keep low enable pin on SFP when the interface is down. This commit makes the wrs_port_tx_control tool not needed anymore. Signed-off-by: Adam Wujek <adam.wujek@cern.ch>
6c9b1377 · Adam Wujek · 4dbefc9f · 6c9b1377
Commit 6c9b1377 authored Jul 22, 2016 by Adam Wujek 💬
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endpoint.c kernel/wr_nic/endpoint.c +6 -0

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--- a/kernel/wr_nic/endpoint.c
+++ b/kernel/wr_nic/endpoint.c
@@ -212,9 +212,15 @@ int wrn_ep_open(struct net_device *dev)
 int wrn_ep_close(struct net_device *dev)
 {
 	struct wrn_ep *ep = netdev_priv(dev);
+	uint32_t value;

 	if (WR_IS_NODE)
 		return 0; /* No access to EP registers in the SPEC */
+
+	/* Disable SFP (put enable pin on SFP down) */
+	value = wrn_phy_read(dev, 0, MII_BMCR);
+	wrn_phy_write(dev, 0, MII_BMCR, value | BMCR_PDOWN);
+
 	/*
 	 * Beware: the system loops in the del_timer_sync below if timer_setup
 	 * had not been called either (see "if (WR_IS_NODE)" in ep_open above)