From patchwork Wed May 18 07:02:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shaik Sajida Bhanu X-Patchwork-Id: 574086 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B199C433EF for ; Wed, 18 May 2022 07:02:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231855AbiERHCy (ORCPT ); Wed, 18 May 2022 03:02:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231830AbiERHCv (ORCPT ); Wed, 18 May 2022 03:02:51 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D964F5253C; Wed, 18 May 2022 00:02:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1652857371; x=1684393371; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=W2A1GkyCkwdVeBEfAustBrxgJCxJqGetxADq0juG2ao=; b=Zk84XKLgJmnapzTtVhX4Bq7p97mtlGcV0wthnn2/zPp7s9fIQMhoknhN GHXrS8X4JxyP042fJ2yrfFV6L9pb/gAryCE5+LwaXKK1cGiPk5CxBCwpl wuUdZy7GS6KmfURLMgAamtK3E0K+2W8XngpRFVLQJF1O9vC396dUhrqCb E=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 18 May 2022 00:02:50 -0700 X-QCInternal: smtphost Received: from ironmsg01-blr.qualcomm.com ([10.86.208.130]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/AES256-SHA; 18 May 2022 00:02:49 -0700 X-QCInternal: smtphost Received: from c-sbhanu-linux.qualcomm.com ([10.242.50.201]) by ironmsg01-blr.qualcomm.com with ESMTP; 18 May 2022 12:32:28 +0530 Received: by c-sbhanu-linux.qualcomm.com (Postfix, from userid 2344807) id 4CBB8176D; Wed, 18 May 2022 12:32:27 +0530 (IST) From: Shaik Sajida Bhanu To: adrian.hunter@intel.com, ulf.hansson@linaro.org, wsa+renesas@sang-engineering.com, shawn.lin@rock-chips.com, yoshihiro.shimoda.uh@renesas.com, digetx@gmail.com, quic_asutoshd@quicinc.com Cc: linux-arm-msm@vger.kernel.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, quic_rampraka@quicinc.com, quic_pragalla@quicinc.com, quic_sartgarg@quicinc.com, quic_nitirawa@quicinc.com, quic_sayalil@quicinc.com, Shaik Sajida Bhanu , Liangliang Lu , "Bao D . Nguyen" Subject: [PATCH V6 4/5] mmc: debugfs: Add debug fs error state entry for mmc driver Date: Wed, 18 May 2022 12:32:19 +0530 Message-Id: <1652857340-6040-5-git-send-email-quic_c_sbhanu@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1652857340-6040-1-git-send-email-quic_c_sbhanu@quicinc.com> References: <1652857340-6040-1-git-send-email-quic_c_sbhanu@quicinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Add debug fs entry error state to query eMMC and SD card errors statistics. If any errors occurred in eMMC and SD card driver level then err_state value will be set to 1. Signed-off-by: Liangliang Lu Signed-off-by: Sayali Lokhande Signed-off-by: Bao D. Nguyen Signed-off-by: Shaik Sajida Bhanu Acked-by: Adrian Hunter --- drivers/mmc/core/debugfs.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index 6aa5a60..3c7908d 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -223,6 +223,27 @@ static int mmc_clock_opt_set(void *data, u64 val) DEFINE_DEBUGFS_ATTRIBUTE(mmc_clock_fops, mmc_clock_opt_get, mmc_clock_opt_set, "%llu\n"); +static int mmc_err_state_get(void *data, u64 *val) +{ + struct mmc_host *host = data; + int i; + + if (!host) + return -EINVAL; + + *val = 0; + for (i = 0; i < MMC_ERR_MAX; i++) { + if (host->err_stats[i]) { + *val = 1; + break; + } + } + + return 0; +} + +DEFINE_DEBUGFS_ATTRIBUTE(mmc_err_state, mmc_err_state_get, NULL, "%llu\n"); + static int mmc_err_stats_show(struct seq_file *file, void *data) { struct mmc_host *host = (struct mmc_host *)file->private; @@ -289,6 +310,8 @@ void mmc_add_host_debugfs(struct mmc_host *host) debugfs_create_file_unsafe("clock", S_IRUSR | S_IWUSR, root, host, &mmc_clock_fops); + debugfs_create_file("err_state", 0600, root, host, + &mmc_err_state); debugfs_create_file("err_stats", 0600, root, host, &mmc_err_stats_fops);