From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Ott Subject: [PATCH v3 0/1] HID: Report Descriptor in Sysfs Date: Sun, 23 Jan 2011 19:36:16 -0500 Message-ID: <1295829377-7731-1-git-send-email-alan@signal11.us> References: <20110123225935.GB12488@kroah.com> Return-path: Received: from core.signal11.us ([64.251.29.136]:50752 "EHLO core.signal11.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752711Ab1AXAhr (ORCPT ); Sun, 23 Jan 2011 19:37:47 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by core.signal11.us (Postfix) with SMTP id 4ABEC1CCABB6 for ; Sun, 23 Jan 2011 19:37:46 -0500 (EST) In-Reply-To: <20110123225935.GB12488@kroah.com> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Jiri Kosina , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, greg@kroah.com, stern@rowland.harvard.edu, libusb-devel@lists.sourceforge.net Cc: Alan Ott This is version 3 of the patch, with binary data in the sysfs file instead of ASCII, as suggested by Alan Stern and Greg KH. Also now with documentation. Original Description: So I'd like to have access to the HID report descriptor in a sysfs entry, so I can read it without opening the device. hid-core seemed like the place to put it. Using the /sys/class links, for hidraw devices, this puts a new file, report_descriptor in the directory: /sys/class/hidraw/hidraw0/device/ For my USB device (for example), the new file is in: /sys/bus/usb/devices/1-5.3:1.0/0003:046D:C216.0001/ For my Bluetooth device, the new file is in: /sys/class/bluetooth/hci0/hci0:11/0005:054C:0268.0002/ I'm not super confident that these file locations are the best place, but I made a best guess so that it could be discussed. The current location is where the hid-core stuff lives. Is there a reason these directories are named bus:vendor:product:id (instead of hid-core or something similar)? Is there a better way to do this? Alan. Alan Ott (1): hid: Add HID Report Descriptor to sysfs. Documentation/ABI/testing/sysfs-driver-hid | 10 ++++++++ drivers/hid/hid-core.c | 33 ++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+), 0 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-driver-hid