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>
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@ -628,6 +628,28 @@ static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
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return 0;
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return 0;
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}
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}
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static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count)
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{
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struct usbhid_device *usbhid = hid->driver_data;
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struct usb_device *dev = hid_to_usb_dev(hid);
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struct usb_interface *intf = usbhid->intf;
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struct usb_host_interface *interface = intf->cur_altsetting;
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int ret;
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ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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HID_REQ_SET_REPORT,
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USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
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cpu_to_le16(((HID_OUTPUT_REPORT + 1) << 8) | *buf),
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interface->desc.bInterfaceNumber, buf + 1, count - 1,
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USB_CTRL_SET_TIMEOUT);
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/* count also the report id */
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if (ret > 0)
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ret++;
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return ret;
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}
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static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
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static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
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{
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{
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struct usbhid_device *usbhid = hid->driver_data;
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struct usbhid_device *usbhid = hid->driver_data;
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@ -871,6 +893,7 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf)
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hid->hiddev_hid_event = hiddev_hid_event;
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hid->hiddev_hid_event = hiddev_hid_event;
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hid->hiddev_report_event = hiddev_report_event;
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hid->hiddev_report_event = hiddev_report_event;
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#endif
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#endif
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hid->hid_output_raw_report = usbhid_output_raw_report;
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return hid;
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return hid;
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fail:
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fail:
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