From patchwork Tue Aug 6 16:27:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 11079389 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 A4DCF746 for ; Tue, 6 Aug 2019 16:30:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9391F28385 for ; Tue, 6 Aug 2019 16:30:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 85DC12847B; Tue, 6 Aug 2019 16:30:41 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 031F128385 for ; Tue, 6 Aug 2019 16:30:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=aZtuGl8fzn8W3HZiYRx+rH7p9huSaOqyQ8cLy1V3RGM=; b=En/70urItAWFclBv6vbOE9JnN/ urojju4TFlnfHUBeALMrF5YlEgZ+ofL+yxmhMJEbnO7kCc+zDEr4Gn8auSSKcNlcFssnObkFQeXSX D1EhDfAs/4gcgx9dGN5T47E8tQ/hyM+P4HG0AApvnvt5+XMXMyGs01Ox3jqKQwb5l+OdQ4YpD654D xptLdaOoZDszZOL/e3devWC7e5H5DRj3k7HeUGrqMkO2SY1zMZbNdyPp4QwCAgCxqHlJjlkQNMMXp 8rD8PhBZSn+XOeGr6T6eGYpW/BPJx2bCKg48hg9ZWZuXnqNJgiOpCDXhedUyBBASKXBvr19lBGFLD 6jiXPoRg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hv2MC-0003jr-NJ; Tue, 06 Aug 2019 16:30:40 +0000 Received: from mout.gmx.net ([212.227.17.21]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hv2KW-0000Vs-FP; Tue, 06 Aug 2019 16:28:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1565108895; bh=YYhqVadKi9Ny0MQd5nYruiuZfLEPo+Mk45x6ClJf9vs=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=X83wdvbqiQWov+vx/Y7tRkRKeHEWDZQ1V/OIOhPqZlZSuEcGdBa4PjJbohz7I98bI kpRE8qR2VzutyxDD5oiXHioiI6NxRZLqdNA0XjD8jx0dd2lRidR2r7HmYlTU8nWnH+ +39FXC15ccBpn7mmYUc0x9YgDRFEt0sx2RhailYY= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from localhost.localdomain ([217.61.153.94]) by mail.gmx.com (mrgmx103 [212.227.17.168]) with ESMTPSA (Nemesis) id 0MUHbK-1hmosH0fqc-00R3PH; Tue, 06 Aug 2019 18:28:15 +0200 From: Frank Wunderlich To: Alessandro Zummo , Alexandre Belloni , Allison Randal , "David S. Miller" , devicetree@vger.kernel.org, Eddie Huang , Greg Kroah-Hartman , Jonathan Cameron , Kate Stewart , Lee Jones , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-rtc@vger.kernel.org, Mark Rutland , Matthias Brugger , Mauro Carvalho Chehab , Nicolas Ferre , Richard Fontana , Rob Herring , Sean Wang , Sebastian Reichel , Thomas Gleixner , "Tianping . Fang" Subject: [PATCH v4 08/10] power: reset: add driver for mt6323 poweroff Date: Tue, 6 Aug 2019 18:27:43 +0200 Message-Id: <20190806162745.8414-9-frank-w@public-files.de> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190806162745.8414-1-frank-w@public-files.de> References: <20190806162745.8414-1-frank-w@public-files.de> X-Provags-ID: V03:K1:6Nvk99cZ4lkB9xXKbFHJNhLkUhjDQqkoO6Kw5xHbaPS4bfFc+ZK L++rabZ5AN/jHCYnXxRJEEEXCxbcwkN3wdiog2qdFNtuUogjRNuCBaI50Gid9dje9t8G9Ao XfOOXB5l6M9HypzOxjicoJ0X/YIhinGJNdqjLmUq+3F/8ZQ+MFu9X9pqnL+dGseaYJZdVSI EUo9BMQ7NVolRdr5SMKGQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:/OknRzOgVBc=:EcfajLlIrF9zRC/n3HTFb+ 4yz6pWy+aN60wl1VmTNhazBOCARSZwKmxZ2PMpKC21LrUxLZ9o5Em1RpeGQbnK6iBLjubbK4c fC2vf7M4Hrb2nYBfjMCVLEwZmOPnl5KWE61t63ZvHk8KnlRZUcxcFRhEM+MILP2OUYF/Zi2L1 KkB2AF2UI+ubXds6y5z2pKY+AjtpIbKKHjiLFemGEGPgxH6TN3M+ArnR0aeZE5m7Ugv1xP43w 3h3DJrkuWwkDwVjWL2M1+bWspLdbAHLFe7pmKrXD/bgglFmoBhhXYLI3JVsx1i+XW5CSSCqyd gxy6YH1gqhc6RBtKcHcVarA22FY8q9TQyNebXjBpef282yLjs8OiD6gIQtDhXefx1vBeaPAZ7 U36lgM11tpAOP6kXC9adcQ+qHDwslgyJBVRSoOBnHfuv8cswa1jvfqCLQKPHj4UpfL3YPJfxI KyXVmyEOFr8+KRwJXphi/hs3xCXEQ74IZkwZiLATb8kG6KyGFKfelBbgCAPsLhGCNAqcbexFC gvkZeY0xSyt+5J/ykRy7j5UzpAhLo6qvzLaiJI3ijdQR3eviUUWrnWmY7MNiAt6AiVMdodE0i Wc6QhioBqWdYqycJfeHwo5udxp+PpzqdyVy3ze9dvgAvrWIXgq0clm81tP7McLvsVolYk/rsG GaOroiN2ekc0IZKsSoNZ3FsEYUFFd30fwzqI0hoURTHxY/+ScX41KP2yke2Td4X7U7BKQLB9Z rXyq7HgweWoBL0n6J92dJh0e7WeOVJGC8cCbGhPOK2qlAb71dFp7qEZ9unWNPw7JfF353kpXm AOrY/r5HufLyl5kJPuWU4X4o0h3NR/IAOHQzqb8NssupaY8y0GTawVSMPEgOPeK3yVFRVQxoQ eBhFeRuEp9LVNZ82hdTKbJzv0TTbyZozfXKppITdlFgvlqViyhO8z/PweR5I3iAYogQmMxb8g JPcE5U/PoV/l1iP0ElUAOoQdIdSwPCqcRyWc9Mk+S/yfAN0Q3jt0vO8W0JRAnojPe5A/Ic4L0 jkw+Haz2mgKJolIB/7Pc+O3j8aQxwjFgVzzC2J4A0Z5LnYyRKe1sXC1lY4ALrSM6XOrxSRNv0 Fs606no9/swNQA04yKiBtfe5YgGxyxo1PePptaJedEQt9Q93MtXCIA6LQ== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190806_092856_822693_74665B59 X-CRM114-Status: GOOD ( 16.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Josef Friedl , Frank Wunderlich MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Josef Friedl add poweroff driver for mt6323 and make Makefile and Kconfig-Entries Suggested-by: Frank Wunderlich Signed-off-by: Josef Friedl Signed-off-by: Frank Wunderlich --- changes since v3: none changes since v2: none (=v2 part 5) drivers/power/reset/Kconfig | 10 +++ drivers/power/reset/Makefile | 1 + drivers/power/reset/mt6323-poweroff.c | 97 +++++++++++++++++++++++++++ include/linux/mfd/mt6397/core.h | 2 + 4 files changed, 110 insertions(+) create mode 100644 drivers/power/reset/mt6323-poweroff.c -- 2.17.1 diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index a564237278ff..c721939767eb 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -140,6 +140,16 @@ config POWER_RESET_LTC2952 This driver supports an external powerdown trigger and board power down via the LTC2952. Bindings are made in the device tree. +config POWER_RESET_MT6323 + bool "MediaTek MT6323 power-off driver" + depends on MFD_MT6397 + help + The power-off driver is responsible for externally shutdown down + the power of a remote MediaTek SoC MT6323 is connected to through + controlling a tiny circuit BBPU inside MT6323 RTC. + + Say Y if you have a board where MT6323 could be found. + config POWER_RESET_QNAP bool "QNAP power-off driver" depends on OF_GPIO && PLAT_ORION diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile index 85da3198e4e0..da37f8b851dc 100644 --- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o obj-$(CONFIG_POWER_RESET_GPIO_RESTART) += gpio-restart.o obj-$(CONFIG_POWER_RESET_HISI) += hisi-reboot.o obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o +obj-$(CONFIG_POWER_RESET_MT6323) += mt6323-poweroff.o obj-$(CONFIG_POWER_RESET_QCOM_PON) += qcom-pon.o obj-$(CONFIG_POWER_RESET_OCELOT_RESET) += ocelot-reset.o obj-$(CONFIG_POWER_RESET_PIIX4_POWEROFF) += piix4-poweroff.o diff --git a/drivers/power/reset/mt6323-poweroff.c b/drivers/power/reset/mt6323-poweroff.c new file mode 100644 index 000000000000..1caf43d9e46d --- /dev/null +++ b/drivers/power/reset/mt6323-poweroff.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Power off through MediaTek PMIC + * + * Copyright (C) 2018 MediaTek Inc. + * + * Author: Sean Wang + * + */ + +#include +#include +#include +#include +#include +#include + +struct mt6323_pwrc { + struct device *dev; + struct regmap *regmap; + u32 base; +}; + +static struct mt6323_pwrc *mt_pwrc; + +static void mt6323_do_pwroff(void) +{ + struct mt6323_pwrc *pwrc = mt_pwrc; + unsigned int val; + int ret; + + regmap_write(pwrc->regmap, pwrc->base + RTC_BBPU, RTC_BBPU_KEY); + regmap_write(pwrc->regmap, pwrc->base + RTC_WRTGR, 1); + + ret = regmap_read_poll_timeout(pwrc->regmap, + pwrc->base + RTC_BBPU, val, + !(val & RTC_BBPU_CBUSY), + MTK_RTC_POLL_DELAY_US, + MTK_RTC_POLL_TIMEOUT); + if (ret) + dev_err(pwrc->dev, "failed to write BBPU: %d\n", ret); + + /* Wait some time until system down, otherwise, notice with a warn */ + mdelay(1000); + + WARN_ONCE(1, "Unable to power off system\n"); +} + +static int mt6323_pwrc_probe(struct platform_device *pdev) +{ + struct mt6397_chip *mt6397_chip = dev_get_drvdata(pdev->dev.parent); + struct mt6323_pwrc *pwrc; + struct resource *res; + + pwrc = devm_kzalloc(&pdev->dev, sizeof(*pwrc), GFP_KERNEL); + if (!pwrc) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + pwrc->base = res->start; + pwrc->regmap = mt6397_chip->regmap; + pwrc->dev = &pdev->dev; + mt_pwrc = pwrc; + + pm_power_off = &mt6323_do_pwroff; + + return 0; +} + +static int mt6323_pwrc_remove(struct platform_device *pdev) +{ + if (pm_power_off == &mt6323_do_pwroff) + pm_power_off = NULL; + + return 0; +} + +static const struct of_device_id mt6323_pwrc_dt_match[] = { + { .compatible = "mediatek,mt6323-pwrc" }, + {}, +}; +MODULE_DEVICE_TABLE(of, mt6323_pwrc_dt_match); + +static struct platform_driver mt6323_pwrc_driver = { + .probe = mt6323_pwrc_probe, + .remove = mt6323_pwrc_remove, + .driver = { + .name = "mt6323-pwrc", + .of_match_table = mt6323_pwrc_dt_match, + }, +}; + +module_platform_driver(mt6323_pwrc_driver); + +MODULE_DESCRIPTION("Poweroff driver for MT6323 PMIC"); +MODULE_AUTHOR("Sean Wang "); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h index 25a95e72179b..652da61e3711 100644 --- a/include/linux/mfd/mt6397/core.h +++ b/include/linux/mfd/mt6397/core.h @@ -7,6 +7,8 @@ #ifndef __MFD_MT6397_CORE_H__ #define __MFD_MT6397_CORE_H__ +#include + enum mt6397_irq_numbers { MT6397_IRQ_SPKL_AB = 0, MT6397_IRQ_SPKR_AB,