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net: mvmdio: allow platform device style registration

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This patch changes the mvmdio driver not to use device tree
helper functions such as of_mdiobus_register() and of_iomap() so we can
instantiate this driver using a classic platform_device approach. Use
the device manager helper to ioremap() the base register cookie so we
get automatic freeing upon error and removal. This change is harmless
for Device Tree platforms because they will get the driver be registered
the same way as it was before.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2013-03-22 03:39:25 +00:00 committed by David S. Miller
parent 43d6869037
commit 7111b717a0
1 changed files with 15 additions and 7 deletions
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22
drivers/net/ethernet/marvell/mvmdio.c
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@ -24,10 +24,10 @@
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/phy.h>
#include <linux/of_address.h>
#include <linux/of_mdio.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/of_mdio.h>
#define MVMDIO_SMI_DATA_SHIFT 0
#define MVMDIO_SMI_PHY_ADDR_SHIFT 16
@ -143,11 +143,17 @@ static int orion_mdio_reset(struct mii_bus *bus)
static int orion_mdio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct resource *r;
struct mii_bus *bus;
struct orion_mdio_dev *dev;
int i, ret;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
dev_err(&pdev->dev, "No SMI register address given\n");
return -ENODEV;
}
bus = mdiobus_alloc_size(sizeof(struct orion_mdio_dev));
if (!bus) {
dev_err(&pdev->dev, "Cannot allocate MDIO bus\n");
@ -172,9 +178,9 @@ static int orion_mdio_probe(struct platform_device *pdev)
bus->irq[i] = PHY_POLL;
dev = bus->priv;
dev->smireg = of_iomap(pdev->dev.of_node, 0);
dev->smireg = devm_ioremap(&pdev->dev, r->start, resource_size(r));
if (!dev->smireg) {
dev_err(&pdev->dev, "No SMI register address given in DT\n");
dev_err(&pdev->dev, "Unable to remap SMI register\n");
kfree(bus->irq);
mdiobus_free(bus);
return -ENODEV;
@ -182,10 +188,12 @@ static int orion_mdio_probe(struct platform_device *pdev)
mutex_init(&dev->lock);
ret = of_mdiobus_register(bus, np);
if (pdev->dev.of_node)
ret = of_mdiobus_register(bus, pdev->dev.of_node);
else
ret = mdiobus_register(bus);
if (ret < 0) {
dev_err(&pdev->dev, "Cannot register MDIO bus (%d)\n", ret);
iounmap(dev->smireg);
kfree(bus->irq);
mdiobus_free(bus);
return ret;