From patchwork Wed Nov 10 17:17:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "H. Nikolaus Schaller" X-Patchwork-Id: 517397 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4172C433EF for ; Wed, 10 Nov 2021 17:17:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C35461186 for ; Wed, 10 Nov 2021 17:17:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232462AbhKJRUI (ORCPT ); Wed, 10 Nov 2021 12:20:08 -0500 Received: from mo4-p02-ob.smtp.rzone.de ([81.169.146.170]:13151 "EHLO mo4-p02-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230471AbhKJRUH (ORCPT ); Wed, 10 Nov 2021 12:20:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1636564635; s=strato-dkim-0002; d=goldelico.com; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Cc:Date: From:Subject:Sender; bh=OzCoVJYxglf1y8GP+J0FWzWTGQYuFXTicqOEQEZRkXM=; b=MXkk1EQBq2K67AfpJSaFYHO8T2BNsRr3F9holWpMYKPnF+u9zRZzTUzIBFNLjBbn6o zWlolbBU+kKCjAY8mlnUOMhuRSLjo3DCAkWvSjIVfD+PKkbRr1Vc9kvNBmdCNVxG/VJr 9bYY2puVxjxPjC3QB8/JSwS/uaHOzBcYxTQ/ynTVZu9Og+72D1NOFos3BnDXYAF2Iywm TJTKOcL+9lJdlFyI0fntsNnOxPhElH/A4ZGFiCSl7410aATdT7adtMpd3UcUaUVgcFtJ w1r0tjsCS/UmZQHxdb/0RYjUVo39o0nzSM1YafswDV7BvzBn3a9A6XCDhMqbXK0wAK4l Q9+Q== Authentication-Results: strato.com; dkim=none X-RZG-AUTH: ":JGIXVUS7cutRB/49FwqZ7WcJeFKiMhflhwDubTJ9o12DNOsPj0lByOdfLlf0" X-RZG-CLASS-ID: mo00 Received: from iMac.fritz.box by smtp.strato.de (RZmta 47.34.5 DYNA|AUTH) with ESMTPSA id Y02aa4xAAHHE51e (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Wed, 10 Nov 2021 18:17:14 +0100 (CET) From: "H. Nikolaus Schaller" To: Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= , Avri Altman , Shawn Lin , Linus Walleij , Tony Lindgren , Bean Huo , "H. Nikolaus Schaller" , Kiwoong Kim , Tian Tao , Andreas Kemnade , Yang Li Cc: notasas@gmail.com, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, letux-kernel@openphoenux.org, kernel@pyra-handheld.com, linux-omap@vger.kernel.org Subject: [PATCH v2 2/6] mmc: core: allow to match the device tree to apply quirks Date: Wed, 10 Nov 2021 18:17:07 +0100 Message-Id: <9e68e3d23e62a78527aabc1281f89e15200c7d09.1636564631.git.hns@goldelico.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Jérôme Pouiller MMC subsystem provides a way to apply quirks when a device match some properties (VID, PID, etc...) Unfortunately, some SDIO devices do not comply with the SDIO specification and does not provide reliable VID/PID (eg. Silabs WF200). So, the drivers for these devices rely on device tree to identify the device. This patch allows the MMC to also rely on the device tree to apply a quirk. Signed-off-by: Jérôme Pouiller Signed-off-by: H. Nikolaus Schaller --- drivers/mmc/core/card.h | 3 +++ drivers/mmc/core/quirks.h | 17 +++++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h index 7bd392d55cfa5..483e7f2f1039e 100644 --- a/drivers/mmc/core/card.h +++ b/drivers/mmc/core/card.h @@ -59,6 +59,9 @@ struct mmc_fixup { /* for MMC cards */ unsigned int ext_csd_rev; + /* Match against functions declared in device tree */ + const char *of_compatible; + void (*vendor_fixup)(struct mmc_card *card, int data); int data; }; diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h index c7ef2d14b359f..4a767f2fbaaaa 100644 --- a/drivers/mmc/core/quirks.h +++ b/drivers/mmc/core/quirks.h @@ -10,6 +10,7 @@ * */ +#include #include #include "card.h" @@ -145,6 +146,19 @@ static const struct mmc_fixup __maybe_unused sdio_fixup_methods[] = { END_FIXUP }; +static inline bool mmc_fixup_of_compatible_match(struct mmc_card *card, + const char *compatible) +{ + struct device_node *np; + + for_each_child_of_node(mmc_dev(card->host)->of_node, np) { + if (of_device_is_compatible(np, compatible)) + return true; + } + + return false; +} + static inline void mmc_fixup_device(struct mmc_card *card, const struct mmc_fixup *table) { @@ -173,6 +187,9 @@ static inline void mmc_fixup_device(struct mmc_card *card, continue; if (rev < f->rev_start || rev > f->rev_end) continue; + if (f->of_compatible && + !mmc_fixup_of_compatible_match(card, f->of_compatible)) + continue; dev_dbg(&card->dev, "calling %ps\n", f->vendor_fixup); f->vendor_fixup(card, f->data);