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Date: Tue, 15 Oct 2013 12:23:45 +0530
From: George Cherian <george.cherian@...com>
To: <linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-usb@...r.kernel.org>
CC: <tony@...mide.com>, <balbi@...com>, <kishon@...com>,
<rob@...dley.net>, <ijc+devicetree@...lion.org.uk>,
<swarren@...dotorg.org>, <mark.rutland@....com>,
<pawel.moll@....com>, <rob.herring@...xeda.com>,
<gregkh@...uxfoundation.org>,
George Cherian <george.cherian@...com>
Subject: [PATCH v2 2/2] phy: omap-usb2: Adapt phy-omap-usb2 for AM437x
This patch adds a compatible for AM437x "ti,am43xx-usb2" to
reuse the same phy-omap-usb2 driver.
Also updated the documentation to add the new compatible.
Signed-off-by: George Cherian <george.cherian@...com>
---
Documentation/devicetree/bindings/usb/usb-phy.txt | 4 +-
drivers/phy/phy-omap-usb2.c | 54 +++++++++++++++++------
include/linux/usb/omap_usb.h | 10 +++++
3 files changed, 53 insertions(+), 15 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt
index c0245c8..309ab27 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 3e5f08c..7c0bc6c 100644
--- a/drivers/phy/phy-omap-usb2.c
+++ b/drivers/phy/phy-omap-usb2.c
@@ -144,6 +144,35 @@ static struct phy_ops ops = {
.owner = THIS_MODULE,
};
+#ifdef CONFIG_OF
+static const struct usb_phy_data omap_usb2_data = {
+ .label = "omap_usb2",
+ .set_host = omap_usb_set_host,
+ .set_peripheral = omap_usb_set_peripheral,
+ .set_vbus = omap_usb_set_vbus,
+ .start_srp = omap_usb_start_srp,
+};
+
+static const struct usb_phy_data am437x_usb2_data = {
+ .label = "am437x_usb2",
+ .set_host = omap_usb_set_host,
+ .set_peripheral = omap_usb_set_peripheral,
+};
+
+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;
@@ -153,9 +182,14 @@ 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) {
@@ -172,7 +206,7 @@ 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;
@@ -199,10 +233,10 @@ static int omap_usb2_probe(struct platform_device *pdev)
phy->is_suspended = 1;
omap_control_usb_phy_power(phy->control_dev, 0);
- 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;
+ otg->set_host = phy_data->set_host;
+ otg->set_peripheral = phy_data->set_peripheral;
+ otg->set_vbus = phy_data->set_vbus;
+ otg->start_srp = phy_data->start_srp;
otg->phy = &phy->phy;
platform_set_drvdata(pdev, phy);
@@ -297,14 +331,6 @@ 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..0c6b71c 100644
--- a/include/linux/usb/omap_usb.h
+++ b/include/linux/usb/omap_usb.h
@@ -42,6 +42,16 @@ struct omap_usb {
u8 is_suspended:1;
};
+struct usb_phy_data {
+ const char *label;
+ int (*set_host)(struct usb_otg *otg, struct usb_bus *host);
+ int (*set_peripheral)(struct usb_otg *otg,
+ struct usb_gadget *gadget);
+ int (*set_vbus)(struct usb_otg *otg, bool enabled);
+ int (*start_srp)(struct usb_otg *otg);
+ int (*start_hnp)(struct usb_otg *otg);
+};
+
#define phy_to_omapusb(x) container_of((x), struct omap_usb, phy)
#if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE)
--
1.8.1
--
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