From patchwork Thu Apr 19 16:05:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathias Nyman X-Patchwork-Id: 10351163 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A82B86053C for ; Thu, 19 Apr 2018 16:05:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 982B228970 for ; Thu, 19 Apr 2018 16:05:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8CC6E28AB8; Thu, 19 Apr 2018 16:05:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 38C7928AB1 for ; Thu, 19 Apr 2018 16:05:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753746AbeDSQEs (ORCPT ); Thu, 19 Apr 2018 12:04:48 -0400 Received: from mga04.intel.com ([192.55.52.120]:17164 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752514AbeDSQED (ORCPT ); Thu, 19 Apr 2018 12:04:03 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Apr 2018 09:04:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,469,1517904000"; d="scan'208";a="48274636" Received: from mattu-haswell.fi.intel.com ([10.237.72.164]) by fmsmga001.fm.intel.com with ESMTP; 19 Apr 2018 09:04:01 -0700 From: Mathias Nyman To: Cc: , , oneukum@suse.com, Mathias Nyman Subject: [PATCH v2 5/6] USB: USB 3.2 Add sysfs entries for a usb device rx_lanes and tx_lanes Date: Thu, 19 Apr 2018 19:05:54 +0300 Message-Id: <1524153955-7905-6-git-send-email-mathias.nyman@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1524153955-7905-1-git-send-email-mathias.nyman@linux.intel.com> References: <1524153955-7905-1-git-send-email-mathias.nyman@linux.intel.com> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add rx_lanes and tx_lanes lane count sysfs entries for a usb device struct usb_devuce rx_lanes and tx_lanes variables. Shows number of lanes used by the usb device Data rate of a device is the lane speed * lane count, for example USB 3.2 Gen 2x2 device uses 10Gbps signaling per lane, and has dual-lane support 10Gbps * 2 = 20Gbps Signed-off-by: Mathias Nyman --- drivers/usb/core/sysfs.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c index 27bb340..ea18284 100644 --- a/drivers/usb/core/sysfs.c +++ b/drivers/usb/core/sysfs.c @@ -175,6 +175,26 @@ static ssize_t speed_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(speed); +static ssize_t rx_lanes_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_device *udev; + + udev = to_usb_device(dev); + return sprintf(buf, "%d\n", udev->rx_lanes); +} +static DEVICE_ATTR_RO(rx_lanes); + +static ssize_t tx_lanes_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_device *udev; + + udev = to_usb_device(dev); + return sprintf(buf, "%d\n", udev->tx_lanes); +} +static DEVICE_ATTR_RO(tx_lanes); + static ssize_t busnum_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -790,6 +810,8 @@ static struct attribute *dev_attrs[] = { &dev_attr_bNumConfigurations.attr, &dev_attr_bMaxPacketSize0.attr, &dev_attr_speed.attr, + &dev_attr_rx_lanes.attr, + &dev_attr_tx_lanes.attr, &dev_attr_busnum.attr, &dev_attr_devnum.attr, &dev_attr_devpath.attr,