Add device tree support for twl4030 usb driver.
Update the Documentation with device tree binding information.
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
.../devicetree/bindings/usb/twlxxxx-usb.txt | 19 ++++++++++++++
drivers/usb/otg/twl4030-usb.c | 26 +++++++++++++++----
2 files changed, 39 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt b/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
index e3f6d73..c992b3b 100644
--- a/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
+++ b/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
@@ -20,3 +20,22 @@ Board specific device node entry
&twl6030-usb {
usb-supply = <&vusb>;
};
+
+TWL4030 USB PHY AND COMPARATOR
+ - compatible : Should be "ti,twl4030-usb"
+ - interrupts : The interrupt numbers to the cpu should be specified. First
+ interrupt number is the otg interrupt number that raises ID interrupts
+ and VBUS interrupts. The second interrupt number is optional.
+ - <supply-name>-supply : phandle to the regulator device tree node.
+ <supply-name> should be vusb1v5, vusb1v8 and vusb3v1
+ - usb_mode : The mode used by the phy to connect to the controller. "1"
+ specifies "ULPI" mode and "2" specifies "CEA2011_3PIN" mode.
+
+twl4030-usb {
+ compatible = "ti,twl4030-usb";
+ interrupts = < 10 4 >;
+ usb1v5-supply = <&vusb1v5>;
+ usb1v8-supply = <&vusb1v8>;
+ usb3v1-supply = <&vusb3v1>;
+ usb_mode = <1>;
+};
diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c
index 523cad5..f0d2e75 100644
--- a/drivers/usb/otg/twl4030-usb.c
+++ b/drivers/usb/otg/twl4030-usb.c
@@ -585,23 +585,28 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev)
struct twl4030_usb *twl;
int status, err;
struct usb_otg *otg;
-
- if (!pdata) {
- dev_dbg(&pdev->dev, "platform_data not available\n");
- return -EINVAL;
- }
+ struct device_node *np = pdev->dev.of_node;
twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL);
if (!twl)
return -ENOMEM;
+ if (np)
+ of_property_read_u32(np, "usb_mode",
+ (enum twl4030_usb_mode *)&twl->usb_mode);
+ else if (pdata)
+ twl->usb_mode = pdata->usb_mode;
+ else {
+ dev_err(&pdev->dev, "twl4030 initialized without pdata\n");
+ return -EINVAL;
+ }
+
otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL);
if (!otg)
return -ENOMEM;
twl->dev = &pdev->dev;
twl->irq = platform_get_irq(pdev, 0);
- twl->usb_mode = pdata->usb_mode;
twl->vbus_supplied = false;
twl->asleep = 1;
twl->linkstat = OMAP_MUSB_UNKNOWN;
@@ -690,12 +695,21 @@ static int __exit twl4030_usb_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_OF
+static const struct of_device_id twl4030_usb_id_table[] = {
+ { .compatible = "ti,twl4030-usb" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, twl4030_usb_id_table);
+#endif
+
static struct platform_driver twl4030_usb_driver = {
.probe = twl4030_usb_probe,
.remove = __exit_p(twl4030_usb_remove),
.driver = {
.name = "twl4030_usb",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(twl4030_usb_id_table),
},
};
--
1.7.5.4
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