dm thin metadata: fix __udivdi3 undefined on 32-bit
[linux/fpc-iii.git] / drivers / power / reset / msm-poweroff.c
blob4702efdfe466626f97f2b887868e47f611107d17
1 /* Copyright (c) 2013, The Linux Foundation. All rights reserved.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 and
5 * only version 2 as published by the Free Software Foundation.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
14 #include <linux/delay.h>
15 #include <linux/err.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/io.h>
19 #include <linux/of.h>
20 #include <linux/platform_device.h>
21 #include <linux/module.h>
22 #include <linux/reboot.h>
23 #include <linux/pm.h>
25 static void __iomem *msm_ps_hold;
26 static int do_msm_restart(struct notifier_block *nb, unsigned long action,
27 void *data)
29 writel(0, msm_ps_hold);
30 mdelay(10000);
32 return NOTIFY_DONE;
35 static struct notifier_block restart_nb = {
36 .notifier_call = do_msm_restart,
37 .priority = 128,
40 static void do_msm_poweroff(void)
42 /* TODO: Add poweroff capability */
43 do_msm_restart(&restart_nb, 0, NULL);
46 static int msm_restart_probe(struct platform_device *pdev)
48 struct device *dev = &pdev->dev;
49 struct resource *mem;
51 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
52 msm_ps_hold = devm_ioremap_resource(dev, mem);
53 if (IS_ERR(msm_ps_hold))
54 return PTR_ERR(msm_ps_hold);
56 register_restart_handler(&restart_nb);
58 pm_power_off = do_msm_poweroff;
60 return 0;
63 static const struct of_device_id of_msm_restart_match[] = {
64 { .compatible = "qcom,pshold", },
65 {},
67 MODULE_DEVICE_TABLE(of, of_msm_restart_match);
69 static struct platform_driver msm_restart_driver = {
70 .probe = msm_restart_probe,
71 .driver = {
72 .name = "msm-restart",
73 .of_match_table = of_match_ptr(of_msm_restart_match),
77 static int __init msm_restart_init(void)
79 return platform_driver_register(&msm_restart_driver);
81 device_initcall(msm_restart_init);