diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2009-06-12 15:20:55 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2009-06-12 15:20:55 +0200 |
| commit | a635f9dd83f3382577f4544a96df12356e951a40 (patch) | |
| tree | c6fa27df6d01c34e304a32c9f423d569f7358346 /drivers/hid/Kconfig | |
| parent | 8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff) | |
HID: use debugfs for report dumping descriptor
It is a little bit inconvenient for people who have some non-standard
HID hardware (usually violating the HID specification) to have to
recompile kernel with CONFIG_HID_DEBUG to be able to see kernel's perspective
of the HID report descriptor and observe the parsed events. Plus the messages
are then mixed up inconveniently with the rest of the dmesg stuff.
This patch implements /sys/kernel/debug/hid/<device>/rdesc file, which
represents the kernel's view of report descriptor (both the raw report
descriptor data and parsed contents).
With all the device-specific debug data being available through debugfs, there
is no need for keeping CONFIG_HID_DEBUG, as the 'debug' parameter to the
hid module will now only output only driver-specific debugging options, which has
absolutely minimal memory footprint, just a few error messages and one global
flag (hid_debug).
We use the current set of output formatting functions. The ones that need to be
used both for one-shot rdesc seq_file and also for continuous flow of data
(individual reports, as being sent by the device) distinguish according to the
passed seq_file parameter, and if it is NULL, it still output to kernel ringbuffer,
otherwise the corresponding seq_file is used for output.
The format of the output is preserved.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/Kconfig')
| -rw-r--r-- | drivers/hid/Kconfig | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 7e67dcb3d4f..05950a78356 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -31,21 +31,6 @@ config HID If unsure, say Y. -config HID_DEBUG - bool "HID debugging support" - default y - depends on HID - ---help--- - This option lets the HID layer output diagnostics about its internal - state, resolve HID usages, dump HID fields, etc. Individual HID drivers - use this debugging facility to output information about individual HID - devices, etc. - - This feature is useful for those who are either debugging the HID parser - or any HID hardware device. - - If unsure, say Y. - config HIDRAW bool "/dev/hidraw raw HID device support" depends on HID |