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alistair23-linux
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USB HID: provide hook for hidraw write() 

Add hook in usbhid for write() callback from hidraw. Sends the
report to the device through control pipe.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
hifive-unleashed-5.1
Jiri Kosina 2007-05-14 09:54:30 +02:00
parent d773b33972
commit efc493f9d5
1 changed files with 23 additions and 0 deletions
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23
drivers/hid/usbhid/hid-core.c
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@ -628,6 +628,28 @@ static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
return 0;
}
static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count)
{
struct usbhid_device *usbhid = hid->driver_data;
struct usb_device *dev = hid_to_usb_dev(hid);
struct usb_interface *intf = usbhid->intf;
struct usb_host_interface *interface = intf->cur_altsetting;
int ret;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
HID_REQ_SET_REPORT,
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
cpu_to_le16(((HID_OUTPUT_REPORT + 1) << 8) | *buf),
interface->desc.bInterfaceNumber, buf + 1, count - 1,
USB_CTRL_SET_TIMEOUT);
/* count also the report id */
if (ret > 0)
ret++;
return ret;
}
static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
{
struct usbhid_device *usbhid = hid->driver_data;
@ -871,6 +893,7 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf)
hid->hiddev_hid_event = hiddev_hid_event;
hid->hiddev_report_event = hiddev_report_event;
#endif
hid->hid_output_raw_report = usbhid_output_raw_report;
return hid;
fail: