From: Axel Haslam <ahaslam@xxxxxxxxxxxx>
This allows the controller to be specified via device tree.
Signed-off-by: Axel Haslam <ahaslam@xxxxxxxxxxxx>
---
drivers/usb/host/ohci-da8xx.c | 52 +++++++++++++++++++++++++++++++++++++++++--
1 file changed, 50 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index d7a0f11..10db421 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -18,6 +18,7 @@
#include <linux/phy/phy.h>
#include <linux/platform_data/usb-davinci.h>
#include <linux/gpio.h>
+#include <linux/of_gpio.h>
#ifndef CONFIG_ARCH_DAVINCI_DA8XX
#error "This file is DA8xx bus glue. Define CONFIG_ARCH_DAVINCI_DA8XX."
@@ -311,6 +312,47 @@ static const struct hc_driver ohci_da8xx_hc_driver = {
/*-------------------------------------------------------------------------*/
+#ifdef CONFIG_OF
+static const struct of_device_id da8xx_ohci_ids[] = {
+ { .compatible = "ti,da830-ohci" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, da8xx_ohci_ids);
+
+static int ohci_da8xx_of_init(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct da8xx_ohci_platform_data *pdata;
+ u32 tmp;
+
+ if (!np)
+ return 0;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ pdata->gpio_vbus = of_get_named_gpio(np, "vbus-gpio", 0);
+ if (pdata->gpio_vbus >= 0)
+ pdata->flags |= DA8XX_OHCI_FLAG_GPIO_VBUS;
+
+ pdata->gpio_overcurrent = of_get_named_gpio(np, "oci-gpio", 0);
+ if (pdata->gpio_overcurrent >= 0)
+ pdata->flags |= DA8XX_OHCI_FLAG_GPIO_OCI;
+
+ if (!of_property_read_u32(np, "power-on-delay", &tmp))
+ pdata->potpgt = tmp;
+
+ pdev->dev.platform_data = pdata;
+
+ return 0;
+}
+#else
+static int ohci_da8xx_of_init(struct platform_device *pdev)
+{
+ return 0;
+}
+#endif
/**
* usb_hcd_da8xx_probe - initialize DA8xx-based HCDs
@@ -323,12 +365,17 @@ static const struct hc_driver ohci_da8xx_hc_driver = {
static int usb_hcd_da8xx_probe(const struct hc_driver *driver,
struct platform_device *pdev)
{
- struct da8xx_ohci_platform_data *pdata = dev_get_platdata(&pdev->dev);
+ struct da8xx_ohci_platform_data *pdata;
struct usb_hcd *hcd;
struct resource *mem;
int error, irq;
- if (pdata == NULL)
+ error = ohci_da8xx_of_init(pdev);
+ if (error)
+ pr_err("error initializing platform data: %d\n", error);
+
+ pdata = dev_get_platdata(&pdev->dev);
+ if (!pdata)
return -ENODEV;
usb11_clk = devm_clk_get(&pdev->dev, "usb11");
@@ -498,6 +545,7 @@ static struct platform_driver ohci_hcd_da8xx_driver = {
#endif
.driver = {
.name = "ohci",
+ .of_match_table = da8xx_ohci_ids,
},
};
--
2.7.1
--
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