From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 2BFD4C32754 for ; Tue, 6 Aug 2019 16:29:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EC655208C3 for ; Tue, 6 Aug 2019 16:29:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="X83wdvbq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387968AbfHFQ3e (ORCPT ); Tue, 6 Aug 2019 12:29:34 -0400 Received: from mout.gmx.net ([212.227.17.21]:44665 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387721AbfHFQ3D (ORCPT ); Tue, 6 Aug 2019 12:29:03 -0400 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" Cc: Josef Friedl , Frank Wunderlich 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== Content-Transfer-Encoding: quoted-printable Sender: linux-rtc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org 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 =2D-- changes since v3: none changes since v2: none (=3Dv2 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 diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index a564237278ff..c721939767eb 100644 =2D-- 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 throug= h + 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 =2D-- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile @@ -11,6 +11,7 @@ obj-$(CONFIG_POWER_RESET_GPIO) +=3D gpio-poweroff.o obj-$(CONFIG_POWER_RESET_GPIO_RESTART) +=3D gpio-restart.o obj-$(CONFIG_POWER_RESET_HISI) +=3D hisi-reboot.o obj-$(CONFIG_POWER_RESET_MSM) +=3D msm-poweroff.o +obj-$(CONFIG_POWER_RESET_MT6323) +=3D mt6323-poweroff.o obj-$(CONFIG_POWER_RESET_QCOM_PON) +=3D qcom-pon.o obj-$(CONFIG_POWER_RESET_OCELOT_RESET) +=3D ocelot-reset.o obj-$(CONFIG_POWER_RESET_PIIX4_POWEROFF) +=3D piix4-poweroff.o diff --git a/drivers/power/reset/mt6323-poweroff.c b/drivers/power/reset/m= t6323-poweroff.c new file mode 100644 index 000000000000..1caf43d9e46d =2D-- /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 =3D 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 =3D 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 =3D dev_get_drvdata(pdev->dev.parent); + struct mt6323_pwrc *pwrc; + struct resource *res; + + pwrc =3D devm_kzalloc(&pdev->dev, sizeof(*pwrc), GFP_KERNEL); + if (!pwrc) + return -ENOMEM; + + res =3D platform_get_resource(pdev, IORESOURCE_MEM, 0); + pwrc->base =3D res->start; + pwrc->regmap =3D mt6397_chip->regmap; + pwrc->dev =3D &pdev->dev; + mt_pwrc =3D pwrc; + + pm_power_off =3D &mt6323_do_pwroff; + + return 0; +} + +static int mt6323_pwrc_remove(struct platform_device *pdev) +{ + if (pm_power_off =3D=3D &mt6323_do_pwroff) + pm_power_off =3D NULL; + + return 0; +} + +static const struct of_device_id mt6323_pwrc_dt_match[] =3D { + { .compatible =3D "mediatek,mt6323-pwrc" }, + {}, +}; +MODULE_DEVICE_TABLE(of, mt6323_pwrc_dt_match); + +static struct platform_driver mt6323_pwrc_driver =3D { + .probe =3D mt6323_pwrc_probe, + .remove =3D mt6323_pwrc_remove, + .driver =3D { + .name =3D "mt6323-pwrc", + .of_match_table =3D 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/co= re.h index 25a95e72179b..652da61e3711 100644 =2D-- 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 =3D 0, MT6397_IRQ_SPKR_AB, =2D- 2.17.1