Re: [PATCH 1/3] phy: omap-usb2: Adapt phy-omap-usb2 for AM437x

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George,

On Monday 03 March 2014 03:40 PM, George Cherian wrote:
Adapt phy-omap-usb2 driver for AM437x.
	- Add new comaptible "ti,am437x-usb2" for AM437x
	- Pass proper data to differentiate AM437x and others.
	- AM437x doesnot support  set_vbus and start_srp.
	- Also update the Documentation to add new compatible.

Signed-off-by: George Cherian <george.cherian@xxxxxx>
---
  Documentation/devicetree/bindings/usb/usb-phy.txt |  4 +-
  drivers/phy/phy-omap-usb2.c                       | 49 +++++++++++++++++------
  include/linux/usb/omap_usb.h                      |  9 +++++
  3 files changed, 49 insertions(+), 13 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt
index c0245c8..b3fa409 100644
--- a/Documentation/devicetree/bindings/usb/usb-phy.txt
+++ b/Documentation/devicetree/bindings/usb/usb-phy.txt
@@ -3,7 +3,9 @@ USB PHY
  OMAP USB2 PHY

  Required properties:
- - compatible: Should be "ti,omap-usb2"
+ - compatible: Should be either of
+	* "ti,omap-usb2" for OMAP4, OMAP5, DRA7
+	* "ti,am437x-usb2" for AM437x
   - reg : Address and length of the register set for the device.
   - #phy-cells: determine the number of cells that should be given in the
     phandle while referencing this phy.
diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
index 7699752..d54f24b 100644
--- a/drivers/phy/phy-omap-usb2.c
+++ b/drivers/phy/phy-omap-usb2.c
@@ -144,6 +144,31 @@ static struct phy_ops ops = {
  	.owner		= THIS_MODULE,
  };

+#ifdef CONFIG_OF
+static const struct usb_phy_data omap_usb2_data = {
+	.label = "omap_usb2",
+	.flags = OMAP_USB2_HAS_START_SRP | OMAP_USB2_HAS_SET_VBUS,
+};
+
+static const struct usb_phy_data am437x_usb2_data = {
+	.label = "am437x_usb2",
+	.flags =  0,
+};
+
+static const struct of_device_id omap_usb2_id_table[] = {
+	{
+		.compatible = "ti,omap-usb2",
+		.data = &omap_usb2_data,
+	},
+	{
+		.compatible = "ti,am437x-usb2",
+		.data = &am437x_usb2_data,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, omap_usb2_id_table);
+#endif
+
  static int omap_usb2_probe(struct platform_device *pdev)
  {
  	struct omap_usb	*phy;
@@ -153,10 +178,16 @@ static int omap_usb2_probe(struct platform_device *pdev)
  	struct device_node *node = pdev->dev.of_node;
  	struct device_node *control_node;
  	struct platform_device *control_pdev;
+	const struct of_device_id *of_id;
+	struct usb_phy_data *phy_data;
+
+	of_id = of_match_device(of_match_ptr(omap_usb2_id_table), &pdev->dev);

-	if (!node)
+	if (!of_id)
  		return -EINVAL;

+	phy_data = (struct usb_phy_data *)of_id->data;
+
  	phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
  	if (!phy) {
  		dev_err(&pdev->dev, "unable to allocate memory for USB2 PHY\n");
@@ -172,7 +203,7 @@ static int omap_usb2_probe(struct platform_device *pdev)
  	phy->dev		= &pdev->dev;

  	phy->phy.dev		= phy->dev;
-	phy->phy.label		= "omap-usb2";
+	phy->phy.label		= phy_data->label;
  	phy->phy.set_suspend	= omap_usb2_suspend;
  	phy->phy.otg		= otg;
  	phy->phy.type		= USB_PHY_TYPE_USB2;
@@ -196,8 +227,10 @@ static int omap_usb2_probe(struct platform_device *pdev)

  	otg->set_host		= omap_usb_set_host;
  	otg->set_peripheral	= omap_usb_set_peripheral;
-	otg->set_vbus		= omap_usb_set_vbus;
-	otg->start_srp		= omap_usb_start_srp;
+	if (phy_data->flags & OMAP_USB2_HAS_SET_VBUS)
+		otg->set_vbus		= omap_usb_set_vbus;
+	if (phy_data->flags & OMAP_USB2_HAS_START_SRP)
+		otg->start_srp		= omap_usb_start_srp;
  	otg->phy		= &phy->phy;

  	platform_set_drvdata(pdev, phy);
@@ -297,14 +330,6 @@ static const struct dev_pm_ops omap_usb2_pm_ops = {
  #define DEV_PM_OPS     NULL
  #endif

-#ifdef CONFIG_OF
-static const struct of_device_id omap_usb2_id_table[] = {
-	{ .compatible = "ti,omap-usb2" },
-	{}
-};
-MODULE_DEVICE_TABLE(of, omap_usb2_id_table);
-#endif
-
  static struct platform_driver omap_usb2_driver = {
  	.probe		= omap_usb2_probe,
  	.remove		= omap_usb2_remove,
diff --git a/include/linux/usb/omap_usb.h b/include/linux/usb/omap_usb.h
index 6ae2936..034161d 100644
--- a/include/linux/usb/omap_usb.h
+++ b/include/linux/usb/omap_usb.h
@@ -42,6 +42,15 @@ struct omap_usb {
  	u8			is_suspended:1;
  };

+struct usb_phy_data {
+	const char *label;
+	u32 flags;

u8 should be sufficient no?

Can you also refresh the patch on linux-phy next?

Thanks
Kishon
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