From patchwork Thu May 20 09:21:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 444395 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 463DAC4360C for ; Thu, 20 May 2021 10:09:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F5FA61D61 for ; Thu, 20 May 2021 10:09:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234914AbhETKKS (ORCPT ); Thu, 20 May 2021 06:10:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:42304 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235673AbhETKHZ (ORCPT ); Thu, 20 May 2021 06:07:25 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2B61161949; Thu, 20 May 2021 09:41:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621503707; bh=ser7SnMHAV7kqSBtaETDC4EaoYB/yPNZWqM/f9roDyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lquSfdVd/DgMCp6gBGTgNoJryuRQVpoXrmndSJcOOn78tKq4NthIDgQKMotuxDMnh CSxNAoQX9zH3v7BqgyMYDOOFJ/FOrEnposChhFBYtwXmYA9FgXmF5VQkxKxkBZHRrM UDE7FlMg5qc/3xsnDbjhV6R6M9HfKVQspM65mTYA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nobuhiro Iwamatsu , Alexandre Belloni , Sasha Levin Subject: [PATCH 4.19 344/425] rtc: ds1307: Fix wday settings for rx8130 Date: Thu, 20 May 2021 11:21:53 +0200 Message-Id: <20210520092142.718241759@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092131.308959589@linuxfoundation.org> References: <20210520092131.308959589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Nobuhiro Iwamatsu [ Upstream commit 204756f016726a380bafe619438ed979088bd04a ] rx8130 wday specifies the bit position, not BCD. Fixes: ee0981be7704 ("rtc: ds1307: Add support for Epson RX8130CE") Signed-off-by: Nobuhiro Iwamatsu Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20210420023917.1949066-1-nobuhiro1.iwamatsu@toshiba.co.jp Signed-off-by: Sasha Levin --- drivers/rtc/rtc-ds1307.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index ebd59e86a567..94d31779933f 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -434,7 +434,11 @@ static int ds1307_get_time(struct device *dev, struct rtc_time *t) t->tm_min = bcd2bin(regs[DS1307_REG_MIN] & 0x7f); tmp = regs[DS1307_REG_HOUR] & 0x3f; t->tm_hour = bcd2bin(tmp); - t->tm_wday = bcd2bin(regs[DS1307_REG_WDAY] & 0x07) - 1; + /* rx8130 is bit position, not BCD */ + if (ds1307->type == rx_8130) + t->tm_wday = fls(regs[DS1307_REG_WDAY] & 0x7f); + else + t->tm_wday = bcd2bin(regs[DS1307_REG_WDAY] & 0x07) - 1; t->tm_mday = bcd2bin(regs[DS1307_REG_MDAY] & 0x3f); tmp = regs[DS1307_REG_MONTH] & 0x1f; t->tm_mon = bcd2bin(tmp) - 1; @@ -481,7 +485,11 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t) regs[DS1307_REG_SECS] = bin2bcd(t->tm_sec); regs[DS1307_REG_MIN] = bin2bcd(t->tm_min); regs[DS1307_REG_HOUR] = bin2bcd(t->tm_hour); - regs[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1); + /* rx8130 is bit position, not BCD */ + if (ds1307->type == rx_8130) + regs[DS1307_REG_WDAY] = 1 << t->tm_wday; + else + regs[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1); regs[DS1307_REG_MDAY] = bin2bcd(t->tm_mday); regs[DS1307_REG_MONTH] = bin2bcd(t->tm_mon + 1);