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path: root/drivers/usb/host/ohci-exynos.c
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Diffstat (limited to 'drivers/usb/host/ohci-exynos.c')
-rw-r--r--drivers/usb/host/ohci-exynos.c46
1 files changed, 33 insertions, 13 deletions
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index 2909621ea19..fc3091bd237 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -12,6 +12,7 @@
*/
#include <linux/clk.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <mach/ohci.h>
#include <plat/usb-phy.h>
@@ -71,6 +72,8 @@ static const struct hc_driver exynos_ohci_hc_driver = {
.start_port_reset = ohci_start_port_reset,
};
+static u64 ohci_exynos_dma_mask = DMA_BIT_MASK(32);
+
static int __devinit exynos_ohci_probe(struct platform_device *pdev)
{
struct exynos4_ohci_platdata *pdata;
@@ -87,7 +90,18 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev)
return -EINVAL;
}
- exynos_ohci = kzalloc(sizeof(struct exynos_ohci_hcd), GFP_KERNEL);
+ /*
+ * Right now device-tree probed devices don't get dma_mask set.
+ * Since shared usb code relies on it, set it here for now.
+ * Once we move to full device tree support this will vanish off.
+ */
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &ohci_exynos_dma_mask;
+ if (!pdev->dev.coherent_dma_mask)
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+ exynos_ohci = devm_kzalloc(&pdev->dev, sizeof(struct exynos_ohci_hcd),
+ GFP_KERNEL);
if (!exynos_ohci)
return -ENOMEM;
@@ -97,8 +111,7 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev)
dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
- err = -ENOMEM;
- goto fail_hcd;
+ return -ENOMEM;
}
exynos_ohci->hcd = hcd;
@@ -123,7 +136,7 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev)
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
- hcd->regs = ioremap(res->start, resource_size(res));
+ hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
if (!hcd->regs) {
dev_err(&pdev->dev, "Failed to remap I/O memory\n");
err = -ENOMEM;
@@ -134,7 +147,7 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev)
if (!irq) {
dev_err(&pdev->dev, "Failed to get IRQ\n");
err = -ENODEV;
- goto fail;
+ goto fail_io;
}
if (pdata->phy_init)
@@ -146,23 +159,19 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev)
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
- goto fail;
+ goto fail_io;
}
platform_set_drvdata(pdev, exynos_ohci);
return 0;
-fail:
- iounmap(hcd->regs);
fail_io:
clk_disable(exynos_ohci->clk);
fail_clken:
clk_put(exynos_ohci->clk);
fail_clk:
usb_put_hcd(hcd);
-fail_hcd:
- kfree(exynos_ohci);
return err;
}
@@ -177,13 +186,10 @@ static int __devexit exynos_ohci_remove(struct platform_device *pdev)
if (pdata && pdata->phy_exit)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
- iounmap(hcd->regs);
-
clk_disable(exynos_ohci->clk);
clk_put(exynos_ohci->clk);
usb_put_hcd(hcd);
- kfree(exynos_ohci);
return 0;
}
@@ -225,6 +231,9 @@ static int exynos_ohci_suspend(struct device *dev)
if (pdata && pdata->phy_exit)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+
+ clk_disable(exynos_ohci->clk);
+
fail:
spin_unlock_irqrestore(&ohci->lock, flags);
@@ -238,6 +247,8 @@ static int exynos_ohci_resume(struct device *dev)
struct platform_device *pdev = to_platform_device(dev);
struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+ clk_enable(exynos_ohci->clk);
+
if (pdata && pdata->phy_init)
pdata->phy_init(pdev, S5P_USB_PHY_HOST);
@@ -258,6 +269,14 @@ static const struct dev_pm_ops exynos_ohci_pm_ops = {
.resume = exynos_ohci_resume,
};
+#ifdef CONFIG_OF
+static const struct of_device_id exynos_ohci_match[] = {
+ { .compatible = "samsung,exynos-ohci" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_ohci_match);
+#endif
+
static struct platform_driver exynos_ohci_driver = {
.probe = exynos_ohci_probe,
.remove = __devexit_p(exynos_ohci_remove),
@@ -266,6 +285,7 @@ static struct platform_driver exynos_ohci_driver = {
.name = "exynos-ohci",
.owner = THIS_MODULE,
.pm = &exynos_ohci_pm_ops,
+ .of_match_table = of_match_ptr(exynos_ohci_match),
}
};