[PATCH 16/28 v2] phy: omap-usb2: Adapt phy-omap-usb2 for AM437x

Kishon Vijay Abraham I
2014-03-09T07:27:44Z

From: George Cherian <george.cherian@ti.com>

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.

Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
Changes from v1:
removed the Documentation since the name of the file got modified in usb tree.

drivers/phy/phy-omap-usb2.c | 49 +++++++++++++++++++++++++++++++-----------
include/linux/phy/omap_usb.h | 9 ++++++++
2 files changed, 46 insertions(+), 12 deletions(-)

diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
index 9c3f056..0c78f54 100644
--- a/drivers/phy/phy-omap-usb2.c
+++ b/drivers/phy/phy-omap-usb2.c
@@ -122,6 +122,31 @@ 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;
@@ -131,10 +156,16 @@ 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");
@@ -150,7 +181,7 @@ 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.otg = otg;
phy->phy.type = USB_PHY_TYPE_USB2;

@@ -171,8 +202,10 @@ 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);
@@ -272,14 +305,6 @@ 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/phy/omap_usb.h b/include/linux/phy/omap_usb.h
index 19d343c3..35989a8 100644
--- a/include/linux/phy/omap_usb.h
+++ b/include/linux/phy/omap_usb.h
@@ -39,6 +39,15 @@ struct omap_usb {
struct clk *optclk;
};

+struct usb_phy_data {
+ const char *label;
+ u8 flags;
+};
+
+/* Driver Flags */
+#define OMAP_USB2_HAS_START_SRP (1 << 0)
+#define OMAP_USB2_HAS_SET_VBUS (1 << 1)
+
#define phy_to_omapusb(x) container_of((x), struct omap_usb, phy)

#if defined(CONFIG_OMAP_USB2) || defined(CONFIG_OMAP_USB2_MODULE)
--
1.7.9.5