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| author | Tobias Jakobi <tjakobi@math.uni-bielefeld.de> | 2017-02-25 20:27:27 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2017-03-06 14:25:03 +0100 |
| commit | 933bfe4d271ef5931bc7513a1239751ed251db04 (patch) | |
| tree | 24eba935f0b52b2f2540de6ef626bae364027a6c /drivers/hid | |
| parent | 81bbef23db51c0b450d90607fbbc2ad80ee0d43f (diff) | |
| download | op-kernel-dev-933bfe4d271ef5931bc7513a1239751ed251db04.zip op-kernel-dev-933bfe4d271ef5931bc7513a1239751ed251db04.tar.gz | |
HID: usbhid: extend polling interval configuration to joysticks
For mouse devices we can currently change the polling interval
via usbhid.mousepoll. Implement the same thing for joysticks, so
users can reduce input latency this way.
This has been tested with a Logitech RumblePad 2 with jspoll=2,
resulting in a polling rate of 500Hz (verified with evhz).
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/usbhid/hid-core.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 961bc6f..b06fee1 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -52,6 +52,10 @@ static unsigned int hid_mousepoll_interval; module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644); MODULE_PARM_DESC(mousepoll, "Polling interval of mice"); +static unsigned int hid_jspoll_interval; +module_param_named(jspoll, hid_jspoll_interval, uint, 0644); +MODULE_PARM_DESC(jspoll, "Polling interval of joysticks"); + static unsigned int ignoreled; module_param_named(ignoreled, ignoreled, uint, 0644); MODULE_PARM_DESC(ignoreled, "Autosuspend with active leds"); @@ -1081,9 +1085,17 @@ static int usbhid_start(struct hid_device *hid) hid->name, endpoint->bInterval, interval); } - /* Change the polling interval of mice. */ - if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) - interval = hid_mousepoll_interval; + /* Change the polling interval of mice and joysticks. */ + switch (hid->collection->usage) { + case HID_GD_MOUSE: + if (hid_mousepoll_interval > 0) + interval = hid_mousepoll_interval; + break; + case HID_GD_JOYSTICK: + if (hid_jspoll_interval > 0) + interval = hid_jspoll_interval; + break; + } ret = -ENOMEM; if (usb_endpoint_dir_in(endpoint)) { |
