From patchwork Tue Nov 9 10:59:05 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: 12610415 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 B88E7C433FE for ; Tue, 9 Nov 2021 10:59:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A11BF61178 for ; Tue, 9 Nov 2021 10:59:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245518AbhKILCK (ORCPT ); Tue, 9 Nov 2021 06:02:10 -0500 Received: from mo4-p02-ob.smtp.rzone.de ([85.215.255.83]:32560 "EHLO mo4-p02-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245510AbhKILCJ (ORCPT ); Tue, 9 Nov 2021 06:02:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1636455551; 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=ABNcbVaETPUbJMNzSDM+DsjDVEXyCq+zWBcrC8ud7WDulooVRrzfRDB1WAvrlGpXXS tlskRP48ehJ8Lc4pTAUH3FkuB2kFcMaXKkIJK5w/VusLC6hZDraZd07puUQGK3kPeINw ebvOILozc7S6PwbOTIclAgzN6VGspwFOdNvTC/d3d7AH+V/qdvOGyEkxREcjXyvQzBkF qWG4J2ik5kfNt1gy5HbGZYEA3Arr4kN2oz3cWCLkt52Z/IpkyDp9af0voGtTAZCNc/D/ TbzkIAB6ViRPRnVZTBf6/RoOD+JjkXRp3SjfAJJpAMOv6O+BjbFHFv+qFakY75D+cv+8 vbCA== Authentication-Results: strato.com; dkim=none X-RZG-AUTH: ":JGIXVUS7cutRB/49FwqZ7WcJeFKiMhflhwDubTJ9o1KHeBQyh+ITDDFoCL4=" X-RZG-CLASS-ID: mo00 Received: from iMac.fritz.box by smtp.strato.de (RZmta 47.34.1 DYNA|AUTH) with ESMTPSA id 902c63xA9AxAOW4 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Tue, 9 Nov 2021 11:59:10 +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 2/5] mmc: core: allow to match the device tree to apply quirks Date: Tue, 9 Nov 2021 11:59:05 +0100 Message-Id: <9e68e3d23e62a78527aabc1281f89e15200c7d09.1636455548.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 Reviewed-by: Jérôme Pouiller --- 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);