usb: dwc3: omap: add nop transceiver support
We will be adding support for transceivers on
dwc3 driver but not all boards have controllable
transceivers.
For those which don't provide controllable transceivers
we will register nop transceivers.
Note that once OMAP's transceiver drivers reach mainline,
this glue layer will change accordingly.
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 479dc04..ee57a10 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -48,6 +48,9 @@
#include <linux/io.h>
#include <linux/of.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
+
#include "core.h"
/*
@@ -131,6 +134,8 @@
spinlock_t lock;
struct platform_device *dwc3;
+ struct platform_device *usb2_phy;
+ struct platform_device *usb3_phy;
struct device *dev;
int irq;
@@ -152,6 +157,59 @@
writel(value, base + offset);
}
+static int __devinit dwc3_omap_register_phys(struct dwc3_omap *omap)
+{
+ struct nop_usb_xceiv_platform_data pdata;
+ struct platform_device *pdev;
+ int ret;
+
+ memset(&pdata, 0x00, sizeof(pdata));
+
+ pdev = platform_device_alloc("nop_usb_xceiv", 0);
+ if (!pdev)
+ return -ENOMEM;
+
+ omap->usb2_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB2;
+
+ ret = platform_device_add_data(omap->usb2_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err1;
+
+ pdev = platform_device_alloc("nop_usb_xceiv", 1);
+ if (!pdev) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ omap->usb3_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB3;
+
+ ret = platform_device_add_data(omap->usb3_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(omap->usb2_phy);
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(omap->usb3_phy);
+ if (ret)
+ goto err3;
+
+ return 0;
+
+err3:
+ platform_device_del(omap->usb2_phy);
+
+err2:
+ platform_device_put(omap->usb3_phy);
+
+err1:
+ platform_device_put(omap->usb2_phy);
+
+ return ret;
+}
static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
{
@@ -251,6 +309,12 @@
return -ENOMEM;
}
+ ret = dwc3_omap_register_phys(omap);
+ if (ret) {
+ dev_err(dev, "couldn't register PHYs\n");
+ return ret;
+ }
+
devid = dwc3_get_device_id();
if (devid < 0)
return -ENODEV;
@@ -371,6 +435,8 @@
struct dwc3_omap *omap = platform_get_drvdata(pdev);
platform_device_unregister(omap->dwc3);
+ platform_device_unregister(omap->usb2_phy);
+ platform_device_unregister(omap->usb3_phy);
dwc3_put_device_id(omap->dwc3->id);