From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DAF0C2B9FB for ; Sat, 22 May 2021 13:20:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B8466120D for ; Sat, 22 May 2021 13:20:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231189AbhEVNV5 (ORCPT ); Sat, 22 May 2021 09:21:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34854 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230470AbhEVNVz (ORCPT ); Sat, 22 May 2021 09:21:55 -0400 Received: from mout-p-201.mailbox.org (mout-p-201.mailbox.org [IPv6:2001:67c:2050::465:201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 89FFAC061574; Sat, 22 May 2021 06:20:30 -0700 (PDT) Received: from smtp2.mailbox.org (smtp2.mailbox.org [IPv6:2001:67c:2050:105:465:1:2:0]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 4FnPGy2yvJzQjmk; Sat, 22 May 2021 15:20:26 +0200 (CEST) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp2.mailbox.org ([80.241.60.241]) by spamfilter03.heinlein-hosting.de (spamfilter03.heinlein-hosting.de [80.241.56.117]) (amavisd-new, port 10030) with ESMTP id 21ryPJUcxS0H; Sat, 22 May 2021 15:20:21 +0200 (CEST) From: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= To: Amitkumar Karwar , Ganapathi Bhat , Sharvari Harisangam , Xinming Hu , Kalle Valo , "David S. Miller" , Jakub Kicinski Cc: =?UTF-8?q?Jonas=20Dre=C3=9Fler?= , Tsuchiya Yuto , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Maximilian Luz , Andy Shevchenko , Bjorn Helgaas , =?UTF-8?q?Pali=20Roh=C3=A1r?= Subject: [RFC PATCH 0/3] mwifiex: Add quirks for MS Surface devices Date: Sat, 22 May 2021 15:18:24 +0200 Message-Id: <20210522131827.67551-1-verdre@v0yd.nl> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-MBO-SPAM-Probability: *** X-Rspamd-Score: 3.22 / 15.00 / 15.00 X-Rspamd-Queue-Id: C6B3D17FF X-Rspamd-UID: d74d50 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series is based on the patches from Tsuchiya Yuto which have been submitted previously already, where it was suggested to cc linux-pci and Bjorn to ask if there's a better way of doing those quirks. Original series sent in by Tsuchiya: https://lore.kernel.org/linux-wireless/20201028142753.18855-1-kitakar@gmail.com/ Here's the summary written by Tsuchiya: This series adds firmware reset quirks for Microsoft Surface devices (PCIe-88W8897). Surface devices somehow requires quirks to reset the firmware. Otherwise, current mwifiex driver can reset only software level. This is not enough to recover from a bad state. To do so, in the first patch, I added a DMI-based quirk implementation for Surface devices that use mwifiex chip. The required quirk is different by generation. Surface gen3 devices (Surface 3 and Surface Pro 3) require a quirk that calls _DSM method (the third patch). Note that Surface Pro 3 is not yet supported because of the difference between Surface 3. On Surface 3, the wifi card will be immediately removed/reprobed after the _DSM call. On the other hand, Surface Pro 3 doesn't. Need to remove/reprobe wifi card ourselves. This behavior makes the support difficult. Surface gen4+ devices (Surface Pro 4 and later) require a quirk that puts wifi into D3cold before FLR. While here, created new files for quirks (mwifiex/pcie_quirks.c and mwifiex/pcie_quirks.h) because the changes are a little bit too big to add into pcie.c. Jonas Dreßler (1): mwifiex: pcie: add DMI-based quirk implementation for Surface devices Tsuchiya Yuto (2): mwifiex: pcie: add reset_d3cold quirk for Surface gen4+ devices mwifiex: pcie: add reset_wsid quirk for Surface 3 drivers/net/wireless/marvell/mwifiex/Makefile | 1 + drivers/net/wireless/marvell/mwifiex/pcie.c | 21 ++ drivers/net/wireless/marvell/mwifiex/pcie.h | 1 + .../wireless/marvell/mwifiex/pcie_quirks.c | 246 ++++++++++++++++++ .../wireless/marvell/mwifiex/pcie_quirks.h | 17 ++ 5 files changed, 286 insertions(+) create mode 100644 drivers/net/wireless/marvell/mwifiex/pcie_quirks.c create mode 100644 drivers/net/wireless/marvell/mwifiex/pcie_quirks.h -- 2.31.1