From patchwork Wed Jan 30 16:02:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 10788887 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5EF306C2 for ; Wed, 30 Jan 2019 16:03:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4EF322FEE4 for ; Wed, 30 Jan 2019 16:03:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4CFD42FEF3; Wed, 30 Jan 2019 16:03:42 +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 234892FECA for ; Wed, 30 Jan 2019 16:03:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731940AbfA3QDV (ORCPT ); Wed, 30 Jan 2019 11:03:21 -0500 Received: from mga02.intel.com ([134.134.136.20]:60152 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731936AbfA3QDV (ORCPT ); Wed, 30 Jan 2019 11:03:21 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Jan 2019 08:03:21 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,541,1539673200"; d="scan'208";a="142760951" Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 30 Jan 2019 08:03:19 -0800 From: Heikki Krogerus To: Greg Kroah-Hartman Cc: Andy Shevchenko , Chen Yu , Jun Li , Hans de Goede , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 8/9] device connection: Prepare support for firmware described connections Date: Wed, 30 Jan 2019 19:02:58 +0300 Message-Id: <20190130160259.46919-9-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190130160259.46919-1-heikki.krogerus@linux.intel.com> References: <20190130160259.46919-1-heikki.krogerus@linux.intel.com> MIME-Version: 1.0 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 When the connections are defined in firmware, struct device_connection will have the fwnode member pointing to the device node (struct fwnode_handle) of the requested device. The endpoint member for the device names will not be used at all in that case. Signed-off-by: Heikki Krogerus --- drivers/base/devcon.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/base/devcon.c b/drivers/base/devcon.c index d427e806cd73..858b8d2f6ef8 100644 --- a/drivers/base/devcon.c +++ b/drivers/base/devcon.c @@ -75,12 +75,36 @@ static struct bus_type *generic_match_buses[] = { NULL, }; +static int device_fwnode_match(struct device *dev, void *fwnode) +{ + return dev_fwnode(dev) == fwnode; +} + +static void *device_connection_fwnode_match(struct device_connection *con) +{ + struct bus_type *bus; + struct device *dev; + + for (bus = generic_match_buses[0]; bus; bus++) { + dev = bus_find_device(bus, NULL, (void *)con->fwnode, + device_fwnode_match); + if (dev && !strncmp(dev_name(dev), con->id, strlen(con->id))) + return dev; + + put_device(dev); + } + return NULL; +} + /* This tries to find the device from the most common bus types by name. */ static void *generic_match(struct device_connection *con, int ep, void *data) { struct bus_type *bus; struct device *dev; + if (con->fwnode) + return device_connection_fwnode_match(con); + for (bus = generic_match_buses[0]; bus; bus++) { dev = bus_find_device_by_name(bus, NULL, con->endpoint[ep]); if (dev)