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- /* 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 <linux/err.h>
- #include <linux/init.h>
- #include <linux/io.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/of.h>
- #include <linux/of_address.h>
- #include <linux/platform_device.h>
- 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 -ENODEV;
- }
- 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);
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