5113f6f70
 김현기
kernel add
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/* 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
");
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);
|