Re: [PATCH v1 07/11] drivers: usb: twl4030: Add device tree support for twl4030 usb

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On Thursday 28 June 2012 05:21 PM, Kishon Vijay Abraham I wrote:
Add device tree support for twl6030 usb driver.

twl4030?

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                      |   28 +++++++++++++++----
  2 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt b/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
index f293271..2d069e4 100644
--- a/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
+++ b/Documentation/devicetree/bindings/usb/twlxxxx-usb.txt
@@ -16,3 +16,22 @@ twl6030-usb {
  	regulator = "vusb";
  	vusb-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.

Are these standard usb phy modes or something specific to the twl4030
usb phy?

+
+twl4030-usb {
+	compatible = "ti,twl4030-usb";
+	interrupts =<  10 4>;
+	vusb1v5-supply =<&vusb1v5>;
+	vusb1v8-supply =<&vusb1v8>;
+	vusb3v1-supply =<&vusb3v1>;
+	usb_mode =<1>;
+};
diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c
index 523cad5..a4e7434 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 +695,23 @@ 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);
+#else
+#define twl4030_usb_id_table NULL
+#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 = twl4030_usb_id_table,

use of_match_ptr().

  	},
  };


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