usb: dwc3: pci: 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.
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index a9ca9ad..94f550e 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -42,6 +42,9 @@
#include <linux/pci.h>
#include <linux/platform_device.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/nop-usb-xceiv.h>
+
#include "core.h"
/* FIXME define these in <linux/pci_ids.h> */
@@ -51,8 +54,64 @@
struct dwc3_pci {
struct device *dev;
struct platform_device *dwc3;
+ struct platform_device *usb2_phy;
+ struct platform_device *usb3_phy;
};
+static int __devinit dwc3_pci_register_phys(struct dwc3_pci *glue)
+{
+ 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;
+
+ glue->usb2_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB2;
+
+ ret = platform_device_add_data(glue->usb2_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err1;
+
+ pdev = platform_device_alloc("nop_usb_xceiv", 1);
+ if (!pdev) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ glue->usb3_phy = pdev;
+ pdata.type = USB_PHY_TYPE_USB3;
+
+ ret = platform_device_add_data(glue->usb3_phy, &pdata, sizeof(pdata));
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(glue->usb2_phy);
+ if (ret)
+ goto err2;
+
+ ret = platform_device_add(glue->usb3_phy);
+ if (ret)
+ goto err3;
+
+ return 0;
+
+err3:
+ platform_device_del(glue->usb2_phy);
+
+err2:
+ platform_device_put(glue->usb3_phy);
+
+err1:
+ platform_device_put(glue->usb2_phy);
+
+ return ret;
+}
+
static int __devinit dwc3_pci_probe(struct pci_dev *pci,
const struct pci_device_id *id)
{
@@ -80,6 +139,12 @@
pci_set_power_state(pci, PCI_D0);
pci_set_master(pci);
+ ret = dwc3_pci_register_phys(glue);
+ if (ret) {
+ dev_err(dev, "couldn't register PHYs\n");
+ return ret;
+ }
+
devid = dwc3_get_device_id();
if (devid < 0) {
ret = -ENOMEM;
@@ -144,6 +209,8 @@
{
struct dwc3_pci *glue = pci_get_drvdata(pci);
+ platform_device_unregister(glue->usb2_phy);
+ platform_device_unregister(glue->usb3_phy);
dwc3_put_device_id(glue->dwc3->id);
platform_device_unregister(glue->dwc3);
pci_set_drvdata(pci, NULL);