From patchwork Tue Aug 15 02:34:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiansheng Wu X-Patchwork-Id: 13353457 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 60F55C001DB for ; Tue, 15 Aug 2023 02:36:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234255AbjHOCft (ORCPT ); Mon, 14 Aug 2023 22:35:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234265AbjHOCfU (ORCPT ); Mon, 14 Aug 2023 22:35:20 -0400 Received: from SHSQR01.spreadtrum.com (unknown [222.66.158.135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7CC210C1; Mon, 14 Aug 2023 19:35:18 -0700 (PDT) Received: from dlp.unisoc.com ([10.29.3.86]) by SHSQR01.spreadtrum.com with ESMTP id 37F2Ythv067477; Tue, 15 Aug 2023 10:34:55 +0800 (+08) (envelope-from Jiansheng.Wu@unisoc.com) Received: from SHDLP.spreadtrum.com (shmbx05.spreadtrum.com [10.29.1.56]) by dlp.unisoc.com (SkyGuard) with ESMTPS id 4RPwKW3cwjz2PgxhY; Tue, 15 Aug 2023 10:32:47 +0800 (CST) Received: from xm9614pcu.spreadtrum.com (10.13.2.29) by shmbx05.spreadtrum.com (10.29.1.56) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Tue, 15 Aug 2023 10:34:52 +0800 From: Jiansheng Wu To: Mark Brown , Orson Zhai , Baolin Wang , Chunyan Zhang CC: , , , , Subject: [PATCH 5/8] Spi: sprd-adi: Checking panic reason from sml Date: Tue, 15 Aug 2023 10:34:23 +0800 Message-ID: <20230815023426.15076-5-jiansheng.wu@unisoc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230815023426.15076-1-jiansheng.wu@unisoc.com> References: <20230815023426.15076-1-jiansheng.wu@unisoc.com> MIME-Version: 1.0 X-Originating-IP: [10.13.2.29] X-ClientProxiedBy: SHCAS03.spreadtrum.com (10.0.1.207) To shmbx05.spreadtrum.com (10.29.1.56) X-MAIL: SHSQR01.spreadtrum.com 37F2Ythv067477 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Checking panic reason from sml and recording reboot mode to pmic's reg. It used to check reboot reason on next boot. Signed-off-by: XiaoQing Wu Signed-off-by: Jiansheng Wu --- drivers/spi/spi-sprd-adi.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c index eea64d20279e..c31035fffe4c 100644 --- a/drivers/spi/spi-sprd-adi.c +++ b/drivers/spi/spi-sprd-adi.c @@ -119,6 +119,7 @@ /* Definition of PMIC reset status register */ #define HWRST_STATUS_SECURITY 0x02 #define HWRST_STATUS_SECBOOT 0x03 +#define HWRST_STATUS_SML_PANIC 0x04 #define HWRST_STATUS_RECOVERY 0x20 #define HWRST_STATUS_NORMAL 0x40 #define HWRST_STATUS_ALARM 0x50 @@ -410,7 +411,7 @@ static int sprd_adi_restart_handler(struct notifier_block *this, unsigned long m { struct sprd_adi *sadi = container_of(this, struct sprd_adi, restart_handler); - u32 val, reboot_mode = 0; + u32 val = 0, reboot_mode = 0, sml_mode; if (!cmd) { if (strlen(panic_reason)) { @@ -453,9 +454,12 @@ static int sprd_adi_restart_handler(struct notifier_block *this, unsigned long m /* Record the reboot mode */ sprd_adi_read(sadi, sadi->data->rst_sts, &val); - val &= ~0xFF; - val |= reboot_mode; - sprd_adi_write(sadi, sadi->data->rst_sts, val); + sml_mode = val & 0xFF; + if (sml_mode != HWRST_STATUS_SML_PANIC && sml_mode != HWRST_STATUS_SECURITY) { + val &= ~0xFF; + val |= reboot_mode; + sprd_adi_write(sadi, sadi->data->rst_sts, val); + } /*enable register reboot mode*/ sprd_adi_read(sadi, sadi->data->swrst_base, &val);