From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752639Ab1AWWgH (ORCPT ); Sun, 23 Jan 2011 17:36:07 -0500 Received: from core.signal11.us ([64.251.29.136]:56480 "EHLO core.signal11.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752433Ab1AWWgF (ORCPT ); Sun, 23 Jan 2011 17:36:05 -0500 From: Alan Ott 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 Subject: [PATCH v2 0/1] HID: Report Descriptor in Sysfs Date: Sun, 23 Jan 2011 17:35:06 -0500 Message-Id: <1295822107-6820-1-git-send-email-alan@signal11.us> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <20110122135516.GA4893@kroah.com> References: <20110122135516.GA4893@kroah.com> X-DSPAM-Result: Whitelisted X-DSPAM-Processed: Sun Jan 23 17:36:03 2011 X-DSPAM-Confidence: 0.9899 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 4d3cad5320439529717128 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is version 2 of the patch, with binary data in the sysfs file instead of ASCII, as suggested by Alan Stern and Greg KH. 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. drivers/hid/hid-core.c | 33 +++++++++++++++++++++++++++++++++ 1 files changed, 33 insertions(+), 0 deletions(-)