From patchwork Fri Jun 14 08:00:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 804608 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C64A8183091 for ; Fri, 14 Jun 2024 08:01:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718352076; cv=none; b=CFoneVFkc98wNsUH4PxeCJHV71yKUsSeVUiz1xbkcyhKJD9VzjoW1vUKP/1Zf4LP1deQdzwnQDdIxi3tA4PrYYz1lMZRp3pwuvpJjpJ0CgtLHpZDI92h3i6dXXL0vMVtrvSWywhLAxo1CbUtRp2aGGqFooVvRv/D1vQlUMG2CDU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718352076; c=relaxed/simple; bh=bRnsqPjlpf6NUN1IFMZ6LKGlsK8GfqGqN7+JygH5XGw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fStsGgfOrnJK8Kb3EB81CxHreU6rTDVcGkzWjEye2vWa5SkOQpd2tpOUBvfAGHFSFNWYjv5QEPC6JwclNQNl3EqjqQfLu1rUzYuj+OXrP+44Fpw8rwVhP09uWMQOcZnzYCyHZzYL5Ql+bu3BXw2gNiFFyQ5GnlzOayA9hu+mfKo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EmbYjkTN; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="EmbYjkTN" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1718352075; x=1749888075; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=bRnsqPjlpf6NUN1IFMZ6LKGlsK8GfqGqN7+JygH5XGw=; b=EmbYjkTNMc050yBG0vb6Xxr/xccvJxRK3DMHw156rkLzXv0G9/YcObji DT3G73toW6F6zAwdmmY/kZQXZ0ZucBMR1zhDKixAY5CNXh88rcN21dcjq kLQqVjEBxREjBwgIoFZBGENQldkXtyaIfpQI7L1n18C80daVE3l6gWQMp CajtWRzsk5IuTYyhmEuiC3peOPxY4CEb++Twd89ca8w3N1ZLNy3/U2W7T +cfTrMsUCRKDdJSLsRYCn3Gw9V+kvq+MIYGIJAaNpZgDV9DrGlwGF0Uig Fyh2TUsDj8QxhzTJnGQdFkGnFouOfD0lWHZfnRXTWUhMb8gGzrQBvrhw4 g==; X-CSE-ConnectionGUID: jy4BfL8CSJ+B/mN4ebrCzw== X-CSE-MsgGUID: nQd5xbnRTc2SQS1O6O6kEg== X-IronPort-AV: E=McAfee;i="6700,10204,11102"; a="14962018" X-IronPort-AV: E=Sophos;i="6.08,237,1712646000"; d="scan'208";a="14962018" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2024 01:01:14 -0700 X-CSE-ConnectionGUID: ittuEPA7RY2krr5VDD5ysQ== X-CSE-MsgGUID: 7btGJ8F2RXCtWPW2gRk8rg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,237,1712646000"; d="scan'208";a="45382889" Received: from ahunter6-mobl1.ger.corp.intel.com (HELO localhost.localdomain) ([10.94.248.10]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jun 2024 01:01:12 -0700 From: Adrian Hunter To: Ulf Hansson Cc: linux-mmc@vger.kernel.org Subject: [PATCH 3/3] mmc: sdhci: Eliminate SDHCI_QUIRK_UNSTABLE_RO_DETECT Date: Fri, 14 Jun 2024 11:00:51 +0300 Message-Id: <20240614080051.4005-4-adrian.hunter@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240614080051.4005-1-adrian.hunter@intel.com> References: <20240614080051.4005-1-adrian.hunter@intel.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki SDHCI_QUIRK_UNSTABLE_RO_DETECT is used by only one driver variant. It was added in 2011 by commit 82b0e23a295c ("mmc: sdhci: Fix read-only detection with JMicron 388 chip"). Simplify sdhci by moving the logic to the only place it is used. Signed-off-by: Adrian Hunter --- drivers/mmc/host/sdhci-pci-core.c | 27 ++++++++++++++++++++++----- drivers/mmc/host/sdhci.c | 31 ++++++------------------------- drivers/mmc/host/sdhci.h | 3 +-- 3 files changed, 29 insertions(+), 32 deletions(-) diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index 23e6ba70144c..ed45ed0bdafd 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -1319,6 +1319,23 @@ static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = { .probe_slot = intel_mrfld_mmc_probe_slot, }; +#define JMB388_SAMPLE_COUNT 5 + +static int jmicron_jmb388_get_ro(struct mmc_host *mmc) +{ + int i, ro_count; + + ro_count = 0; + for (i = 0; i < JMB388_SAMPLE_COUNT; i++) { + if (sdhci_get_ro(mmc) > 0) { + if (++ro_count > JMB388_SAMPLE_COUNT / 2) + return 1; + } + msleep(30); + } + return 0; +} + static int jmicron_pmos(struct sdhci_pci_chip *chip, int on) { u8 scratch; @@ -1403,11 +1420,6 @@ static int jmicron_probe(struct sdhci_pci_chip *chip) return ret; } - /* quirk for unsable RO-detection on JM388 chips */ - if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD || - chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) - chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT; - return 0; } @@ -1462,6 +1474,11 @@ static int jmicron_probe_slot(struct sdhci_pci_slot *slot) slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST; + /* Handle unstable RO-detection on JM388 chips */ + if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD || + slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) + slot->host->mmc_host_ops.get_ro = jmicron_jmb388_get_ro; + return 0; } diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 112584aa0772..a20df9383b20 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2513,8 +2513,9 @@ int sdhci_get_cd_nogpio(struct mmc_host *mmc) } EXPORT_SYMBOL_GPL(sdhci_get_cd_nogpio); -static int sdhci_check_ro(struct sdhci_host *host) +int sdhci_get_ro(struct mmc_host *mmc) { + struct sdhci_host *host = mmc_priv(mmc); bool allow_invert = false; int is_readonly; @@ -2522,10 +2523,10 @@ static int sdhci_check_ro(struct sdhci_host *host) is_readonly = 0; } else if (host->ops->get_ro) { is_readonly = host->ops->get_ro(host); - } else if (mmc_can_gpio_ro(host->mmc)) { - is_readonly = mmc_gpio_get_ro(host->mmc); + } else if (mmc_can_gpio_ro(mmc)) { + is_readonly = mmc_gpio_get_ro(mmc); /* Do not invert twice */ - allow_invert = !(host->mmc->caps2 & MMC_CAP2_RO_ACTIVE_HIGH); + allow_invert = !(mmc->caps2 & MMC_CAP2_RO_ACTIVE_HIGH); } else { is_readonly = !(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_WRITE_PROTECT); @@ -2539,27 +2540,7 @@ static int sdhci_check_ro(struct sdhci_host *host) return is_readonly; } - -#define SAMPLE_COUNT 5 - -static int sdhci_get_ro(struct mmc_host *mmc) -{ - struct sdhci_host *host = mmc_priv(mmc); - int i, ro_count; - - if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT)) - return sdhci_check_ro(host); - - ro_count = 0; - for (i = 0; i < SAMPLE_COUNT; i++) { - if (sdhci_check_ro(host)) { - if (++ro_count > SAMPLE_COUNT / 2) - return 1; - } - msleep(30); - } - return 0; -} +EXPORT_SYMBOL_GPL(sdhci_get_ro); static void sdhci_hw_reset(struct mmc_host *mmc) { diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 957c7a917ffb..f531b617f28d 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -437,8 +437,6 @@ struct sdhci_host { #define SDHCI_QUIRK_NO_HISPD_BIT (1<<29) /* Controller treats ADMA descriptors with length 0000h incorrectly */ #define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30) -/* The read-only detection via SDHCI_PRESENT_STATE register is unstable */ -#define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31) unsigned int quirks2; /* More deviations from spec. */ @@ -788,6 +786,7 @@ void sdhci_set_power_and_bus_voltage(struct sdhci_host *host, void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, unsigned short vdd); int sdhci_get_cd_nogpio(struct mmc_host *mmc); +int sdhci_get_ro(struct mmc_host *mmc); void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq); int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq); void sdhci_set_bus_width(struct sdhci_host *host, int width);