[PATCH] net: sky2: allow mac to come from dt
From: Tim Harvey <tharvey@gateworks.com>
Date: 2014-03-05 06:22:15
Also in:
linux-devicetree
Subsystem:
marvell gigabit ethernet drivers (skge/sky2), networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The driver reads the mac address from the device registers which would need to have been programmed by the bootloader. This patch adds the ability to pull the mac from devicetree via the pci device dt node. Signed-off-by: Tim Harvey <tharvey@gateworks.com> Cc: netdev@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: Grant Likely <redacted> Cc: Rob Herring <robh+dt@kernel.org> --- drivers/net/ethernet/marvell/sky2.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 55a37ae..bff493a 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c@@ -44,6 +44,8 @@ #include <linux/prefetch.h> #include <linux/debugfs.h> #include <linux/mii.h> +#include <linux/of_device.h> +#include <linux/of_net.h> #include <asm/irq.h>
@@ -4748,6 +4750,7 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port, { struct sky2_port *sky2; struct net_device *dev = alloc_etherdev(sizeof(*sky2)); + unsigned char *iap, tmpaddr[ETH_ALEN]; if (!dev) return NULL;
@@ -4805,8 +4808,27 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port, dev->features |= dev->hw_features; + /* try to get mac address in the following order: + * 1) from device tree data + * 2) from internal registers set by bootloader + */ + iap = NULL; + if (IS_ENABLED(CONFIG_OF)) { + struct device_node *np = hw->pdev->dev.of_node; + if (np) + iap = (unsigned char *) of_get_mac_address(np); + } + + /* 2) mac registers set by bootloader + */ + if (!iap || !is_valid_ether_addr(iap)) { + memcpy_fromio(&tmpaddr, hw->regs + B2_MAC_1 + port * 8, + ETH_ALEN); + iap = &tmpaddr[0]; + } + /* read the mac address */ - memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN); + ether_addr_copy(dev->dev_addr, iap); return dev; }
--
1.8.3.2