GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

HID: ll_driver: Extend the interface with idle requests

Browse source 
Some drivers send the idle command directly to underlying device,
creating an unwanted dependency on the underlying transport layer.
This patch adds hid_hw_idle() to the interface, thereby removing
usbhid from the lion share of the drivers.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2013-02-27 16:38:17 +01:00 • committed by Jiri Kosina
parent 777d4bb39a
commit 9684819b5a
2 changed files with 34 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

19
include/linux/hid.h
View file

@ -664,6 +664,7 @@ struct hid_driver {
* shouldn't allocate anything to not leak memory
* @request: send report request to device (e.g. feature report)
* @wait: wait for buffered io to complete (send/recv reports)
* @idle: send idle request to device
*/
struct hid_ll_driver {
int (*start)(struct hid_device *hdev);
@ -683,6 +684,7 @@ struct hid_ll_driver {
struct hid_report *report, int reqtype);
int (*wait)(struct hid_device *hdev);
int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype);
};
@ -906,6 +908,23 @@ static inline void hid_hw_request(struct hid_device *hdev,
hdev->ll_driver->request(hdev, report, reqtype);
}
/**
* hid_hw_idle - send idle request to device
*
* @hdev: hid device
* @report: report to control
* @idle: idle state
* @reqtype: hid request type
*/
static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle,
int reqtype)
{
if (hdev->ll_driver->idle)
return hdev->ll_driver->idle(hdev, report, idle, reqtype);
return 0;
}
/**
* hid_hw_wait - wait for buffered io to complete
*