summaryrefslogtreecommitdiffstats
path: root/drivers/usb/host/ehci-atmel.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/host/ehci-atmel.c')
-rw-r--r--drivers/usb/host/ehci-atmel.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
index a5a3ef1f009..cf14c95a670 100644
--- a/drivers/usb/host/ehci-atmel.c
+++ b/drivers/usb/host/ehci-atmel.c
@@ -13,6 +13,8 @@
#include <linux/clk.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
/* interface and function clocks */
static struct clk *iclk, *fclk;
@@ -115,6 +117,8 @@ static const struct hc_driver ehci_atmel_hc_driver = {
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};
+static u64 at91_ehci_dma_mask = DMA_BIT_MASK(32);
+
static int __devinit ehci_atmel_drv_probe(struct platform_device *pdev)
{
struct usb_hcd *hcd;
@@ -137,6 +141,13 @@ static int __devinit ehci_atmel_drv_probe(struct platform_device *pdev)
goto fail_create_hcd;
}
+ /* 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 have dma capability bindings this can go away.
+ */
+ if (!pdev->dev.dma_mask)
+ pdev->dev.dma_mask = &at91_ehci_dma_mask;
+
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
@@ -225,9 +236,21 @@ static int __devexit ehci_atmel_drv_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id atmel_ehci_dt_ids[] = {
+ { .compatible = "atmel,at91sam9g45-ehci" },
+ { /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, atmel_ehci_dt_ids);
+#endif
+
static struct platform_driver ehci_atmel_driver = {
.probe = ehci_atmel_drv_probe,
.remove = __devexit_p(ehci_atmel_drv_remove),
.shutdown = usb_hcd_platform_shutdown,
- .driver.name = "atmel-ehci",
+ .driver = {
+ .name = "atmel-ehci",
+ .of_match_table = of_match_ptr(atmel_ehci_dt_ids),
+ },
};