From: ext Felipe Balbi <felipe.balbi@xxxxxxxxx>
The name session is more generic as this interface could
be used also by host side to turn vbus on.
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxx>
---
drivers/usb/musb/musb_core.c | 42 +++++++++++++++++++++---------------------
1 files changed, 21 insertions(+), 21 deletions(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 019898a..5b58d18 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1736,32 +1736,36 @@ musb_vbus_show(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR(vbus, 0644, musb_vbus_show, musb_vbus_store);
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
-
-/* Gadget drivers can't know that a host is connected so they might want
- * to start SRP, but users can. This allows userspace to trigger SRP.
- */
static ssize_t
-musb_srp_store(struct device *dev, struct device_attribute *attr,
+musb_session_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t n)
{
struct musb *musb = dev_to_musb(dev);
- unsigned short srp;
+ unsigned short session;
- if (sscanf(buf, "%hu", &srp) != 1
- || (srp != 1)) {
- printk(KERN_ERR "SRP: Value must be 1\n");
+ if (sscanf(buf, "%hu", &session) != 1
+ || (session != 1)) {
+ printk(KERN_ERR "Value must be 1\n");
return -EINVAL;
}
- if (srp == 1)
- musb_g_wakeup(musb);
+ if (session == 1) {
+ switch (musb->xceiv.state) {
+ case OTG_STATE_B_IDLE:
+ musb_g_wakeup(musb);
+ break;
+ case OTG_STATE_A_IDLE:
+ musb_set_vbus(musb, 1);
+ break;
+ default:
+ printk(KERN_INFO "Vbus might be on already\n");
+ break;
+ }
+ }
return n;
}
-static DEVICE_ATTR(srp, 0644, NULL, musb_srp_store);
-
-#endif /* CONFIG_USB_GADGET_MUSB_HDRC */
+static DEVICE_ATTR(session, 0644, NULL, musb_session_store);
#endif /* sysfs */
@@ -1839,9 +1843,7 @@ static void musb_free(struct musb *musb)
#ifdef CONFIG_SYSFS
device_remove_file(musb->controller, &dev_attr_mode);
device_remove_file(musb->controller, &dev_attr_vbus);
-#ifdef CONFIG_USB_MUSB_OTG
- device_remove_file(musb->controller, &dev_attr_srp);
-#endif
+ device_remove_file(musb->controller, &dev_attr_session);
#endif
#ifdef CONFIG_USB_GADGET_MUSB_HDRC
@@ -2075,9 +2077,7 @@ fail:
#ifdef CONFIG_SYSFS
status = device_create_file(dev, &dev_attr_mode);
status = device_create_file(dev, &dev_attr_vbus);
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
- status = device_create_file(dev, &dev_attr_srp);
-#endif /* CONFIG_USB_GADGET_MUSB_HDRC */
+ status = device_create_file(dev, &dev_attr_session);
status = 0;
#endif
--
1.5.5.1.125.gc697a
--
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