usb: gadget: mv_udc: add otg relative code
Add otg relative code, make it possible to switch between host and
device.
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/mv_udc.h b/drivers/usb/gadget/mv_udc.h
index daa75c1..b2c36ee 100644
--- a/drivers/usb/gadget/mv_udc.h
+++ b/drivers/usb/gadget/mv_udc.h
@@ -216,6 +216,8 @@
struct work_struct vbus_work;
struct workqueue_struct *qwork;
+ struct otg_transceiver *transceiver;
+
struct mv_usb_platform_data *pdata;
/* some SOC has mutiple clock sources for USB*/
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index 9376a74..647cc3a 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1407,6 +1407,20 @@
return retval;
}
+ if (udc->transceiver) {
+ retval = otg_set_peripheral(udc->transceiver, &udc->gadget);
+ if (retval) {
+ dev_err(&udc->dev->dev,
+ "unable to register peripheral to otg\n");
+ if (driver->unbind) {
+ driver->unbind(&udc->gadget);
+ udc->gadget.dev.driver = NULL;
+ udc->driver = NULL;
+ }
+ return retval;
+ }
+ }
+
/* pullup is always on */
mv_udc_pullup(&udc->gadget, 1);
@@ -2109,7 +2123,12 @@
destroy_workqueue(udc->qwork);
}
- if (udc->pdata && udc->pdata->vbus && udc->clock_gating)
+ /*
+ * If we have transceiver inited,
+ * then vbus irq will not be requested in udc driver.
+ */
+ if (udc->pdata && udc->pdata->vbus
+ && udc->clock_gating && udc->transceiver == NULL)
free_irq(udc->pdata->vbus->irq, &dev->dev);
/* free memory allocated in probe */
@@ -2182,6 +2201,11 @@
udc->dev = dev;
+#ifdef CONFIG_USB_OTG_UTILS
+ if (pdata->mode == MV_USB_MODE_OTG)
+ udc->transceiver = otg_get_transceiver();
+#endif
+
udc->clknum = pdata->clknum;
for (clk_i = 0; clk_i < udc->clknum; clk_i++) {
udc->clk[clk_i] = clk_get(&dev->dev, pdata->clkname[clk_i]);
@@ -2328,7 +2352,9 @@
eps_init(udc);
/* VBUS detect: we can disable/enable clock on demand.*/
- if (pdata->vbus) {
+ if (udc->transceiver)
+ udc->clock_gating = 1;
+ else if (pdata->vbus) {
udc->clock_gating = 1;
retval = request_threaded_irq(pdata->vbus->irq, NULL,
mv_udc_vbus_irq, IRQF_ONESHOT, "vbus", udc);
@@ -2371,7 +2397,8 @@
return 0;
err_unregister:
- if (udc->pdata && udc->pdata->vbus && udc->clock_gating)
+ if (udc->pdata && udc->pdata->vbus
+ && udc->clock_gating && udc->transceiver == NULL)
free_irq(pdata->vbus->irq, &dev->dev);
device_unregister(&udc->gadget.dev);
err_free_irq: