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libpayload: Add clear_feature() function to USB framework

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This function will be used by the USB hub driver.

Change-Id: I4d1d2e94f4442cbb636ae989e8ffd543181c4357
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1079
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This commit is contained in:
Nico Huber
2012-05-21 16:19:05 +02:00
committed by Patrick Georgi
parent cefec0ea8c
commit 5f595cb6eb
2 changed files with 18 additions and 10 deletions
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27
payloads/libpayload/drivers/usb/usb.c
View File

@ -205,22 +205,29 @@ set_configuration (usbdev_t *dev)
dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0);
}
void
clear_feature (usbdev_t *dev, int endp, int feature, int rtype)
{
dev_req_t dr;
dr.bmRequestType = rtype;
dr.data_dir = host_to_device;
dr.bRequest = CLEAR_FEATURE;
dr.wValue = feature;
dr.wIndex = endp;
dr.wLength = 0;
dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0);
}
int
clear_stall (endpoint_t *ep)
{
usbdev_t *dev = ep->dev;
int endp = ep->endpoint;
dev_req_t dr;
int rtype = gen_bmRequestType (host_to_device, standard_type,
endp ? endp_recp : dev_recp);
dr.bmRequestType = 0;
if (endp != 0) {
dr.req_recp = endp_recp;
}
dr.bRequest = CLEAR_FEATURE;
dr.wValue = ENDPOINT_HALT;
dr.wIndex = endp;
dr.wLength = 0;
dev->controller->control (dev, OUT, sizeof (dr), &dr, 0, 0);
clear_feature (dev, endp, ENDPOINT_HALT, rtype);
ep->toggle = 0;
return 0;
}

1
payloads/libpayload/include/usb/usb.h
View File

@ -215,6 +215,7 @@ void init_device_entry (hci_t *controller, int num);
void set_feature (usbdev_t *dev, int endp, int feature, int rtype);
void get_status (usbdev_t *dev, int endp, int rtype, int len, void *data);
void clear_feature (usbdev_t *dev, int endp, int feature, int rtype);
int clear_stall (endpoint_t *ep);
void usb_nop_init (usbdev_t *dev);