From patchwork Thu Aug 16 04:35:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wang, Dongsheng" X-Patchwork-Id: 10566953 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 109CA109C for ; Thu, 16 Aug 2018 04:42:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D70B22ACD7 for ; Thu, 16 Aug 2018 04:42:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CA1302ACE1; Thu, 16 Aug 2018 04:42:43 +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 551892ACD7 for ; Thu, 16 Aug 2018 04:42:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726241AbeHPHiV (ORCPT ); Thu, 16 Aug 2018 03:38:21 -0400 Received: from mx01.hxt-semitech.com.96.203.223.in-addr.arpa ([223.203.96.7]:59286 "EHLO barracuda.hxt-semitech.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1725866AbeHPHiV (ORCPT ); Thu, 16 Aug 2018 03:38:21 -0400 X-ASG-Debug-ID: 1534394154-093b7e070021790002-IEKb4K Received: from HXTBJIDCEMVIW02.hxtcorp.net ([10.128.0.15]) by barracuda.hxt-semitech.com with ESMTP id vYktIelcGMDgqQla (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 16 Aug 2018 12:35:54 +0800 (CST) X-Barracuda-Envelope-From: dongsheng.wang@hxt-semitech.com Received: from localhost.localdomain.localdomain (10.5.21.103) by HXTBJIDCEMVIW02.hxtcorp.net (10.128.0.15) with Microsoft SMTP Server (TLS) id 15.0.847.32; Thu, 16 Aug 2018 12:36:02 +0800 From: Wang Dongsheng To: CC: , , , Wang Dongsheng Subject: [PATCH] sdhci: acpi: add qcom sdhci host reset quirk fix Date: Thu, 16 Aug 2018 12:35:49 +0800 X-ASG-Orig-Subj: [PATCH] sdhci: acpi: add qcom sdhci host reset quirk fix Message-ID: <1534394149-2581-2-git-send-email-dongsheng.wang@hxt-semitech.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1534394149-2581-1-git-send-email-dongsheng.wang@hxt-semitech.com> References: <1534394149-2581-1-git-send-email-dongsheng.wang@hxt-semitech.com> MIME-Version: 1.0 X-Originating-IP: [10.5.21.103] X-ClientProxiedBy: HXTBJIDCEMVIW02.hxtcorp.net (10.128.0.15) To HXTBJIDCEMVIW02.hxtcorp.net (10.128.0.15) X-Barracuda-Connect: UNKNOWN[10.128.0.15] X-Barracuda-Start-Time: 1534394154 X-Barracuda-Encrypted: ECDHE-RSA-AES256-SHA X-Barracuda-URL: https://192.168.50.101:443/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at hxt-semitech.com X-Barracuda-BRTS-Status: 1 X-Barracuda-Bayes: INNOCENT GLOBAL 0.7072 1.0000 1.4242 X-Barracuda-Spam-Score: 1.42 X-Barracuda-Spam-Status: No, SCORE=1.42 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.55782 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP After host requests RESET_FOR_ALL action, the hardware output an interrupt for OS and waiting for the OS to approve. Before writing this fix, ACPI GED has handled the interrupt. But the ACPI GED belongs to a slow process, and sometimes the handling process time is more than 100ms(Mutex wait more than 100ms). So drop the GED solution and add this quirk fix. Signed-off-by: Wang Dongsheng --- drivers/mmc/host/sdhci-acpi.c | 60 +++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c index c61109f7b793..82c9b9326e9e 100644 --- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -471,10 +471,70 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = { .priv_size = sizeof(struct intel_host), }; +#define VENDOR_SPECIFIC_PWRCTL_CLEAR_REG 0x1a8 +#define VENDOR_SPECIFIC_PWRCTL_CTL_REG 0x1ac +static irqreturn_t sdhci_acpi_qcom_handler(int irq, void *ptr) +{ + struct sdhci_host *host = ptr; + + sdhci_writel(host, 0x3, VENDOR_SPECIFIC_PWRCTL_CLEAR_REG); + sdhci_writel(host, 0x1, VENDOR_SPECIFIC_PWRCTL_CTL_REG); + + return IRQ_HANDLED; +} + +static int qcom_probe_slot(struct platform_device *pdev, const char *hid, + const char *uid) +{ + struct sdhci_acpi_host *c = platform_get_drvdata(pdev); + struct sdhci_host *host = c->host; + int *irq = sdhci_acpi_priv(c); + + *irq = -EINVAL; + + if (strcmp(hid, "QCOM8051")) + return 0; + + *irq = platform_get_irq(pdev, 1); + if (*irq < 0) + return 0; + + return request_threaded_irq(*irq, NULL, sdhci_acpi_qcom_handler, + IRQF_ONESHOT | IRQF_TRIGGER_HIGH, + "sdhci_qcom", host); +} + +static int qcom_free_slot(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct sdhci_acpi_host *c = platform_get_drvdata(pdev); + struct sdhci_host *host = c->host; + struct acpi_device *adev; + int *irq = sdhci_acpi_priv(c); + const char *hid; + + adev = ACPI_COMPANION(dev); + if (!adev) + return -ENODEV; + + hid = acpi_device_hid(adev); + if (strcmp(hid, "QCOM8051")) + return 0; + + if (*irq < 0) + return 0; + + free_irq(*irq, host); + return 0; +} + static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd_3v = { .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION, .quirks2 = SDHCI_QUIRK2_NO_1_8_V, .caps = MMC_CAP_NONREMOVABLE, + .priv_size = sizeof(int), + .probe_slot = qcom_probe_slot, + .free_slot = qcom_free_slot, }; static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd = {