86166b7bcd
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 <jkosina@suse.cz>
70 lines
2.3 KiB
Text
70 lines
2.3 KiB
Text
#
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# HID driver configuration
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#
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menuconfig HID_SUPPORT
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bool "HID Devices"
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depends on INPUT
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default y
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---help---
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Say Y here to get to see options for various computer-human interface
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device drivers. This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and disabled.
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if HID_SUPPORT
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config HID
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tristate "Generic HID support"
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depends on INPUT
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default y
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---help---
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A human interface device (HID) is a type of computer device that
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interacts directly with and takes input from humans. The term "HID"
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most commonly used to refer to the USB-HID specification, but other
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devices (such as, but not strictly limited to, Bluetooth) are
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designed using HID specification (this involves certain keyboards,
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mice, tablets, etc). This option compiles into kernel the generic
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HID layer code (parser, usages, etc.), which can then be used by
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transport-specific HID implementation (like USB or Bluetooth).
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For docs and specs, see http://www.usb.org/developers/hidpage/
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If unsure, say Y
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config HID_DEBUG
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bool "HID debugging support"
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default y if !EMBEDDED
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depends on HID
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---help---
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This option lets the HID layer output diagnostics about its internal
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state, resolve HID usages, dump HID fields, etc. Individual HID drivers
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use this debugging facility to output information about individual HID
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devices, etc.
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This feature is useful for those who are either debugging the HID parser
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or any HID hardware device.
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If unsure, say N
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config HIDRAW
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bool "/dev/hidraw raw HID device support"
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depends on HID
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---help---
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Say Y here if you want to support HID devices (from the USB
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specification standpoint) that aren't strictly user interface
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devices, like monitor controls and Uninterruptable Power Supplies.
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This module supports these devices separately using a separate
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event interface on /dev/hidraw.
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There is also a /dev/hiddev configuration option in the USB HID
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configuration menu. In comparison to hiddev, this device does not process
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the hid events at all (no parsing, no lookups). This lets applications
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to work on raw hid events when they want to, and avoid using transport-specific
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userspace libhid/libusb libraries.
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If unsure, say Y.
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source "drivers/hid/usbhid/Kconfig"
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endif # HID_SUPPORT
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