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authorNeil Zhang <zhangwm@marvell.com>2011-11-30 09:57:13 +0800
committerFelipe Balbi <balbi@ti.com>2011-12-12 11:45:22 +0200
commit487d54d172b3afd3d2bf124b24eaf7f7e7b8a668 (patch)
treea2c5665ce64d902afea5508db90ab8de3093fe7d /drivers/usb/gadget
parent9823a52539adce658f2414e33f2838b896ea4971 (diff)
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>
Diffstat (limited to 'drivers/usb/gadget')
-rw-r--r--drivers/usb/gadget/mv_udc.h2
-rw-r--r--drivers/usb/gadget/mv_udc_core.c33
2 files changed, 32 insertions, 3 deletions
diff --git a/drivers/usb/gadget/mv_udc.h b/drivers/usb/gadget/mv_udc.h
index daa75c12f336..b2c36ee3c82c 100644
--- a/drivers/usb/gadget/mv_udc.h
+++ b/drivers/usb/gadget/mv_udc.h
@@ -216,6 +216,8 @@ struct mv_udc {
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 9376a7483c9b..647cc3ab1709 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -1407,6 +1407,20 @@ static int mv_udc_start(struct usb_gadget_driver *driver,
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 @@ static int __devexit mv_udc_remove(struct platform_device *dev)
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 @@ static int __devinit mv_udc_probe(struct platform_device *dev)
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 @@ static int __devinit mv_udc_probe(struct platform_device *dev)
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 @@ static int __devinit mv_udc_probe(struct platform_device *dev)
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: