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path: root/drivers/usb/host/ohci-spear.c
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Diffstat (limited to 'drivers/usb/host/ohci-spear.c')
-rw-r--r--drivers/usb/host/ohci-spear.c36
1 files changed, 28 insertions, 8 deletions
diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
index 95c16489e88..fc7305ee3c9 100644
--- a/drivers/usb/host/ohci-spear.c
+++ b/drivers/usb/host/ohci-spear.c
@@ -14,6 +14,7 @@
#include <linux/signal.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
+#include <linux/of.h>
struct spear_ohci {
struct ohci_hcd ohci;
@@ -24,12 +25,12 @@ struct spear_ohci {
static void spear_start_ohci(struct spear_ohci *ohci)
{
- clk_enable(ohci->clk);
+ clk_prepare_enable(ohci->clk);
}
static void spear_stop_ohci(struct spear_ohci *ohci)
{
- clk_disable(ohci->clk);
+ clk_disable_unprepare(ohci->clk);
}
static int __devinit ohci_spear_start(struct usb_hcd *hcd)
@@ -90,6 +91,8 @@ static const struct hc_driver ohci_spear_hc_driver = {
.start_port_reset = ohci_start_port_reset,
};
+static u64 spear_ohci_dma_mask = DMA_BIT_MASK(32);
+
static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
{
const struct hc_driver *driver = &ohci_spear_hc_driver;
@@ -98,11 +101,8 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
struct spear_ohci *ohci_p;
struct resource *res;
int retval, irq;
- int *pdata = pdev->dev.platform_data;
char clk_name[20] = "usbh_clk";
-
- if (pdata == NULL)
- return -EFAULT;
+ static int instance = -1;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
@@ -110,8 +110,22 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
goto fail_irq_get;
}
- if (*pdata >= 0)
- sprintf(clk_name, "usbh.%01d_clk", *pdata);
+ /*
+ * 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 = &spear_ohci_dma_mask;
+
+ /*
+ * Increment the device instance, when probing via device-tree
+ */
+ if (pdev->id < 0)
+ instance++;
+ else
+ instance = pdev->id;
+ sprintf(clk_name, "usbh.%01d_clk", instance);
usbh_clk = clk_get(NULL, clk_name);
if (IS_ERR(usbh_clk)) {
@@ -222,6 +236,11 @@ static int spear_ohci_hcd_drv_resume(struct platform_device *dev)
}
#endif
+static struct of_device_id spear_ohci_id_table[] __devinitdata = {
+ { .compatible = "st,spear600-ohci", },
+ { },
+};
+
/* Driver definition to register with the platform bus */
static struct platform_driver spear_ohci_hcd_driver = {
.probe = spear_ohci_hcd_drv_probe,
@@ -233,6 +252,7 @@ static struct platform_driver spear_ohci_hcd_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "spear-ohci",
+ .of_match_table = of_match_ptr(spear_ohci_id_table),
},
};