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usb: add USB_MSG_PLUG_OUT event 

When the core received an USB_MSG_PLUG_OUT event, it will stop all the
classes. This make a chance that the classes could get rid off doing
useless stuff while the USB cable is plugged out.
This commit is contained in:
Grissiom 2013-06-06 15:21:40 +08:00
parent 03e8d24688
commit ed19483cb4
2 changed files with 64 additions and 11 deletions
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5
components/drivers/include/drivers/usb_device.h
View File

@ -146,6 +146,11 @@ enum udev_msg_type
USB_MSG_DATA_NOTIFY,
USB_MSG_SOF,
USB_MSG_RESET,
/* we don't need to add a "PLUG_IN" event because after the cable is
* plugged in(before any SETUP) the classed have nothing to do. If the host
* is ready, it will send RESET and we will have USB_MSG_RESET. So, a RESET
* should reset and run the class while plug_in is not. */
USB_MSG_PLUG_OUT,
};
typedef enum udev_msg_type udev_msg_type;

70
components/drivers/usb/usbdevice/core/core.c
View File

@ -666,6 +666,60 @@ rt_err_t _sof_notify(udevice_t device)
return RT_EOK;
}
/**
* This function will stop all class.
*
* @param device the usb device object.
*
* @return RT_EOK.
*/
rt_err_t _stop_notify(udevice_t device)
{
struct rt_list_node *i;
uclass_t cls;
RT_ASSERT(device != RT_NULL);
/* to notity every class that sof event comes */
for (i = device->curr_cfg->cls_list.next;
i != &device->curr_cfg->cls_list;
i = i->next)
{
cls = (uclass_t)rt_list_entry(i, struct uclass, list);
if(cls->ops->stop != RT_NULL)
cls->ops->stop(device, cls);
}
return RT_EOK;
}
/**
* This function will run all class.
*
* @param device the usb device object.
*
* @return RT_EOK.
*/
rt_err_t _run_notify(udevice_t device)
{
struct rt_list_node *i;
uclass_t cls;
RT_ASSERT(device != RT_NULL);
/* to notity every class that sof event comes */
for (i = device->curr_cfg->cls_list.next;
i != &device->curr_cfg->cls_list;
i = i->next)
{
cls = (uclass_t)rt_list_entry(i, struct uclass, list);
if(cls->ops->run != RT_NULL)
cls->ops->run(device, cls);
}
return RT_EOK;
}
/**
* This function will reset all class.
*
@ -680,17 +734,8 @@ rt_err_t _reset_notify(udevice_t device)
RT_ASSERT(device != RT_NULL);
/* to notity every class that sof event comes */
for (i=device->curr_cfg->cls_list.next;
i!=&device->curr_cfg->cls_list; i=i->next)
{
cls = (uclass_t)rt_list_entry(i, struct uclass, list);
if(cls->ops->stop != RT_NULL)
cls->ops->stop(device, cls);
if(cls->ops->run != RT_NULL)
cls->ops->run(device, cls);
}
_stop_notify();
_run_notify();
return RT_EOK;
}
@ -1415,6 +1460,9 @@ static void rt_usbd_thread_entry(void* parameter)
if (device->state == USB_STATE_ADDRESS)
_reset_notify(device);
break;
case USB_MSG_PLUG_OUT:
_stop_notify(device);
break;
default:
rt_kprintf("unknown msg type\n");
break;