[PATCH v5 net-next 07/10] net: korina: Add support for device tree

Thomas Bogendoerfer
2021-04-16T08:52:41Z

If there is no mac address passed via platform data try to get it via
device tree and fall back to a random mac address, if all fail.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
drivers/net/ethernet/korina.c | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/korina.c b/drivers/net/ethernet/korina.c
index d6dbbdd43d7c..cd078a5c679b 100644
--- a/drivers/net/ethernet/korina.c
+++ b/drivers/net/ethernet/korina.c
@@ -43,6 +43,8 @@
#include <linux/ioport.h>
#include <linux/iopoll.h>
#include <linux/in.h>
+#include <linux/of_device.h>
+#include <linux/of_net.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/delay.h>
@@ -1068,7 +1070,12 @@ static int korina_probe(struct platform_device *pdev)
SET_NETDEV_DEV(dev, &pdev->dev);
lp = netdev_priv(dev);

- memcpy(dev->dev_addr, mac_addr, ETH_ALEN);
+ if (mac_addr) {
+ ether_addr_copy(dev->dev_addr, mac_addr);
+ } else {
+ if (of_get_mac_address(pdev->dev.of_node, dev->dev_addr))
+ eth_hw_addr_random(dev);
+ }

lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx");
lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx");
@@ -1148,8 +1155,21 @@ static int korina_remove(struct platform_device *pdev)
return 0;
}

+#ifdef CONFIG_OF
+static const struct of_device_id korina_match[] = {
+ {
+ .compatible = "idt,3243x-emac",
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, korina_match);
+#endif
+
static struct platform_driver korina_driver = {
- .driver.name = "korina",
+ .driver = {
+ .name = "korina",
+ .of_match_table = of_match_ptr(korina_match),
+ },
.probe = korina_probe,
.remove = korina_remove,
};
--
2.29.2