From patchwork Fri Feb 11 20:35:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugo Villeneuve X-Patchwork-Id: 1591836 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=hugovil.com header.i=@hugovil.com header.a=rsa-sha256 header.s=x header.b=DYsvLqIW; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-rtc-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4JwQPK6H9Vz9s8q for ; Sat, 12 Feb 2022 07:36:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353296AbiBKUgF (ORCPT ); Fri, 11 Feb 2022 15:36:05 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:35386 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235821AbiBKUf7 (ORCPT ); Fri, 11 Feb 2022 15:35:59 -0500 Received: from mail.hugovil.com (mail.hugovil.com [162.243.120.170]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 795C5CF1; Fri, 11 Feb 2022 12:35:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=hugovil.com ; s=x; h=Subject:Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-Id:Date:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Wv4FHJN/eexiTb373COf63qSzuJufwmU8rnNAU+bfGY=; b=DYsvLqIW9WnTWiLsN4RYb+3lrG 0ic3hMxOF8TbBt2GP5HkK1eDVcITCd11wOxWBW8udJiXQn6KS6EXziZg7L6usUaUbtigH8MZRRFev jLcs4Ah7NCwo5hffzWLUI3L+qBBTFBnMScHzetKOqYrLJnnRMlK2BvhrJbC4niebA+cQ=; Received: from modemcable168.174-80-70.mc.videotron.ca ([70.80.174.168]:55274 helo=pettiford.lan) by mail.hugovil.com with esmtpa (Exim 4.92) (envelope-from ) id 1nIce2-0005vF-8H; Fri, 11 Feb 2022 15:35:54 -0500 From: Hugo Villeneuve To: hvilleneuve@dimonoff.com, a.zummo@towertech.it, alexandre.belloni@bootlin.com Cc: hugo@hugovil.com, linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org Date: Fri, 11 Feb 2022 15:35:14 -0500 Message-Id: <20220211203520.3902374-9-hugo@hugovil.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220211203520.3902374-1-hugo@hugovil.com> References: <20220211203520.3902374-1-hugo@hugovil.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 70.80.174.168 X-SA-Exim-Mail-From: hugo@hugovil.com X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 Subject: [PATCH 08/14] rtc: pcf2127: add support for PCF2131 interrupts on output INT_A X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.hugovil.com) Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org From: Hugo Villeneuve The PCF2127 and PCF2129 have one output interrupt pin. The PCF2131 has two, named INT_A and INT_B. The hardware support that any interrupt source can be routed to either one or both of them. Force all interrupt sources to go to the INT A pin. Support to route any interrupt source to INT A/B pins is not supported by this driver at the moment. Signed-off-by: Hugo Villeneuve --- drivers/rtc/rtc-pcf2127.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index a52af7465d69..ee1e9d8285bb 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -191,6 +191,7 @@ struct pcf21xx_config { int max_register; unsigned int has_nvmem:1; unsigned int has_bit_wd_ctl_cd0:1; + unsigned int has_int_a_b:1; /* PCF2131 supports two interrupt outputs. */ u8 regs_td_base; /* Time/data base registers. */ u8 regs_alarm_base; /* Alarm function base registers. */ u8 reg_wd_ctl; /* Watchdog control register. */ @@ -879,6 +880,7 @@ static struct pcf21xx_config pcf21xx_cfg[] = { .max_register = 0x1d, .has_nvmem = 1, .has_bit_wd_ctl_cd0 = 1, + .has_int_a_b = 0, .regs_td_base = PCF2127_REG_TIME_DATE_BASE, .regs_alarm_base = PCF2127_REG_ALARM_BASE, .reg_wd_ctl = PCF2127_REG_WD_CTL, @@ -902,6 +904,7 @@ static struct pcf21xx_config pcf21xx_cfg[] = { .max_register = 0x19, .has_nvmem = 0, .has_bit_wd_ctl_cd0 = 0, + .has_int_a_b = 0, .regs_td_base = PCF2127_REG_TIME_DATE_BASE, .regs_alarm_base = PCF2127_REG_ALARM_BASE, .reg_wd_ctl = PCF2127_REG_WD_CTL, @@ -925,6 +928,7 @@ static struct pcf21xx_config pcf21xx_cfg[] = { .max_register = 0x36, .has_nvmem = 0, .has_bit_wd_ctl_cd0 = 0, + .has_int_a_b = 1, .regs_td_base = PCF2131_REG_TIME_DATE_BASE, .regs_alarm_base = PCF2131_REG_ALARM_BASE, .reg_wd_ctl = PCF2131_REG_WD_CTL, @@ -1017,6 +1021,28 @@ static int pcf2127_enable_ts(struct device *dev, int ts_id) return ret; } +/* Route all interrupt sources to INT A pin. */ +static int pcf2127_configure_interrupt_pins(struct device *dev) +{ + struct pcf2127 *pcf2127 = dev_get_drvdata(dev); + int ret; + + /* Mask bits need to be cleared to enable corresponding + * interrupt source. + */ + ret = regmap_write(pcf2127->regmap, + PCF2131_REG_INT_A_MASK1, 0); + if (ret) + return ret; + + ret = regmap_write(pcf2127->regmap, + PCF2131_REG_INT_A_MASK2, 0); + if (ret) + return ret; + + return ret; +} + static int pcf2127_probe(struct device *dev, struct regmap *regmap, int alarm_irq, const char *name, const struct pcf21xx_config *config) { @@ -1075,6 +1101,15 @@ static int pcf2127_probe(struct device *dev, struct regmap *regmap, set_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features); } + if (pcf2127->cfg->has_int_a_b) { + /* Configure int A/B pins, independently of alarm_irq. */ + ret = pcf2127_configure_interrupt_pins(dev); + if (ret) { + dev_err(dev, "failed to configure interrupt pins\n"); + return ret; + } + } + if (pcf2127->cfg->has_nvmem) { struct nvmem_config nvmem_cfg = { .priv = pcf2127,