From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753349AbaILJx7 (ORCPT ); Fri, 12 Sep 2014 05:53:59 -0400 Received: from mail-by2on0113.outbound.protection.outlook.com ([207.46.100.113]:20811 "EHLO na01-by2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752751AbaILJxQ (ORCPT ); Fri, 12 Sep 2014 05:53:16 -0400 From: Robin Gong To: , , , , , , , , , , , CC: , , , Subject: [PATCH v2 2/3] power: reset: imx-snvs-poweroff: add power off driver for i.mx6 Date: Fri, 12 Sep 2014 16:48:58 +0800 Message-ID: <1410511739-31122-3-git-send-email-b38343@freescale.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1410511739-31122-1-git-send-email-b38343@freescale.com> References: <1410511739-31122-1-git-send-email-b38343@freescale.com> X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:192.88.168.50;CTRY:US;IPV:CAL;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(199003)(189002)(44976005)(6806004)(83072002)(26826002)(79102001)(102836001)(62966002)(74502001)(104016003)(88136002)(104166001)(64706001)(89996001)(84676001)(74662001)(68736004)(92566001)(87936001)(50986999)(99396002)(19580395003)(77982001)(19580405001)(47776003)(2201001)(4396001)(107046002)(80022001)(85852003)(50226001)(46102001)(48376002)(76176999)(87286001)(20776003)(31966008)(50466002)(97736003)(105606002)(229853001)(106466001)(92726001)(81542001)(36756003)(83322001)(95666004)(85306004)(77156001)(81342001)(76482001)(33646002)(21056001)(90102001)(230783001)(93916002)(921003)(1121002)(2004002)(2101003)(42262002)(83996005);DIR:OUT;SFP:1102;SCL:1;SRVR:BL2PR03MB338;H:tx30smr01.am.freescale.net;FPR:;MLV:ovrnspm;PTR:InfoDomainNonexistent;A:1;MX:1;LANG:en; MIME-Version: 1.0 Content-Type: text/plain X-Microsoft-Antispam: UriScan:; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:BL2PR03MB338; X-Forefront-PRVS: 0332AACBC3 Authentication-Results: spf=fail (sender IP is 192.88.168.50) smtp.mailfrom=yibin.gong@freescale.com; X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add simple power off driver for i.mx6. Signed-off-by: Robin Gong --- drivers/power/reset/Kconfig | 6 +++ drivers/power/reset/Makefile | 1 + drivers/power/reset/imx-snvs-poweroff.c | 69 +++++++++++++++++++++++++++++++++ 3 files changed, 76 insertions(+) create mode 100644 drivers/power/reset/imx-snvs-poweroff.c diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index ca41523..c48d9ba 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -45,6 +45,12 @@ config POWER_RESET_HISI help Reboot support for Hisilicon boards. +config POWER_RESET_IMX + bool "IMX6 power-off driver" + depends on POWER_RESET && SOC_IMX6 + help + Power off support for i.mx6 boards. + config POWER_RESET_MSM bool "Qualcomm MSM power-off driver" depends on POWER_RESET && ARCH_QCOM diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile index a42e70e..2524daf 100644 --- a/drivers/power/reset/Makefile +++ b/drivers/power/reset/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_POWER_RESET_AXXIA) += axxia-reset.o obj-$(CONFIG_POWER_RESET_BRCMSTB) += brcmstb-reboot.o obj-$(CONFIG_POWER_RESET_GPIO) += gpio-poweroff.o obj-$(CONFIG_POWER_RESET_HISI) += hisi-reboot.o +obj-$(CONFIG_POWER_RESET_IMX) += imx-snvs-poweroff.o obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o diff --git a/drivers/power/reset/imx-snvs-poweroff.c b/drivers/power/reset/imx-snvs-poweroff.c new file mode 100644 index 0000000..55603ba --- /dev/null +++ b/drivers/power/reset/imx-snvs-poweroff.c @@ -0,0 +1,69 @@ +/* Power off driver for i.mx6 + * Copyright (c) 2014, FREESCALE CORPORATION. All rights reserved. + * + * based on msm-poweroff.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +static void __iomem *snvs_base; + +static void do_imx_poweroff(void) +{ + u32 value = readl(snvs_base); + + /* set TOP and DP_EN bit */ + writel(value | 0x60, snvs_base); +} + +static int imx_poweroff_probe(struct platform_device *pdev) +{ + snvs_base = of_iomap(pdev->dev.of_node, 0); + if (!snvs_base) { + dev_err(&pdev->dev, "failed to get memory\n"); + return -EIO; + } + + pm_power_off = do_imx_poweroff; + return 0; +} + +static const struct of_device_id of_imx_poweroff_match[] = { + { .compatible = "fsl,sec-v4.0-poweroff", }, + {}, +}; +MODULE_DEVICE_TABLE(of, of_imx_poweroff_match); + +static struct platform_driver imx_poweroff_driver = { + .probe = imx_poweroff_probe, + .driver = { + .name = "imx-snvs-poweroff", + .of_match_table = of_match_ptr(of_imx_poweroff_match), + }, +}; + +static int __init imx_poweroff_init(void) +{ + return platform_driver_register(&imx_poweroff_driver); +} +device_initcall(imx_poweroff_init); -- 1.9.1