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net: mvmdio: allow up to three clocks to be specified for orion-mdio

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Allow up to three clocks to be specified and enabled for the orion-mdio
interface, which are required for this interface to be accessible on
Armada 8k platforms.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2017-04-10 16:28:31 +01:00 committed by David S. Miller
parent 6d6a331f44
commit 96cb434238
1 changed files with 24 additions and 9 deletions
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33
drivers/net/ethernet/marvell/mvmdio.c
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@ -53,7 +53,7 @@
struct orion_mdio_dev {
struct mutex lock;
void __iomem *regs;
struct clk *clk;
struct clk *clk[3];
/*
* If we have access to the error interrupt pin (which is
* somewhat misnamed as it not only reflects internal errors
@ -187,7 +187,7 @@ static int orion_mdio_probe(struct platform_device *pdev)
struct resource *r;
struct mii_bus *bus;
struct orion_mdio_dev *dev;
int ret;
int i, ret;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
@ -216,9 +216,12 @@ static int orion_mdio_probe(struct platform_device *pdev)
init_waitqueue_head(&dev->smi_busy_wait);
dev->clk = devm_clk_get(&pdev->dev, NULL);
if (!IS_ERR(dev->clk))
clk_prepare_enable(dev->clk);
for (i = 0; i < ARRAY_SIZE(dev->clk); i++) {
dev->clk[i] = of_clk_get(pdev->dev.of_node, i);
if (IS_ERR(dev->clk[i]))
break;
clk_prepare_enable(dev->clk[i]);
}
dev->err_interrupt = platform_get_irq(pdev, 0);
if (dev->err_interrupt > 0 &&
@ -259,8 +262,14 @@ static int orion_mdio_probe(struct platform_device *pdev)
out_mdio:
if (dev->err_interrupt > 0)
writel(0, dev->regs + MVMDIO_ERR_INT_MASK);
if (!IS_ERR(dev->clk))
clk_disable_unprepare(dev->clk);
for (i = 0; i < ARRAY_SIZE(dev->clk); i++) {
if (IS_ERR(dev->clk[i]))
break;
clk_disable_unprepare(dev->clk[i]);
clk_put(dev->clk[i]);
}
return ret;
}
@ -268,12 +277,18 @@ static int orion_mdio_remove(struct platform_device *pdev)
{
struct mii_bus *bus = platform_get_drvdata(pdev);
struct orion_mdio_dev *dev = bus->priv;
int i;
if (dev->err_interrupt > 0)
writel(0, dev->regs + MVMDIO_ERR_INT_MASK);
mdiobus_unregister(bus);
if (!IS_ERR(dev->clk))
clk_disable_unprepare(dev->clk);
for (i = 0; i < ARRAY_SIZE(dev->clk); i++) {
if (IS_ERR(dev->clk[i]))
break;
clk_disable_unprepare(dev->clk[i]);
clk_put(dev->clk[i]);
}
return 0;
}