cregit-Linux how code gets into the kernel

Release 4.7 drivers/power/reset/imx-snvs-poweroff.c

/* 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); }

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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; }

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robin gongrobin gong52100.00%1100.00%
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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); }

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robin gongrobin gong16100.00%1100.00%
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device_initcall(imx_poweroff_init);

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robin gongrobin gong185100.00%1100.00%
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