From 86166b7bcda0bcb53525114fa1c87ac432be478e Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Mon, 14 May 2007 09:57:40 +0200 Subject: HID: add hidraw interface hidraw is an interface that is going to obsolete hiddev one day. Many userland applications are using libusb instead of using kernel-provided hiddev interface. This is caused by various reasons - the HID parser in kernel doesn't handle all the HID hardware on the planet properly, some devices might require its own specific quirks/drivers, etc. hiddev interface tries to do its best to parse all the received reports properly, and presents only parsed usages into userspace. This is however often not enough, and that's the reason why many userland applications just don't use hiddev at all, and rather use libusb to read raw USB events and process them on their own. Another drawback of hiddev is that it is USB-specific. hidraw interface provides userspace readers with really raw HID reports, no matter what the low-level transport layer is (USB/BT), and gives the userland applications all the freedom to process the HID reports in a way they wish to. Signed-off-by: Jiri Kosina --- drivers/hid/Kconfig | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/hid/Kconfig') diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 19667fcc722..cacf89e65af 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -46,6 +46,25 @@ config HID_DEBUG If unsure, say N +config HIDRAW + bool "/dev/hidraw raw HID device support" + depends on HID + ---help--- + Say Y here if you want to support HID devices (from the USB + specification standpoint) that aren't strictly user interface + devices, like monitor controls and Uninterruptable Power Supplies. + + This module supports these devices separately using a separate + event interface on /dev/hidraw. + + There is also a /dev/hiddev configuration option in the USB HID + configuration menu. In comparison to hiddev, this device does not process + the hid events at all (no parsing, no lookups). This lets applications + to work on raw hid events when they want to, and avoid using transport-specific + userspace libhid/libusb libraries. + + If unsure, say Y. + source "drivers/hid/usbhid/Kconfig" endif # HID_SUPPORT -- cgit v1.2.3