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
|
/*
* OMAP hardware spinlock device initialization
*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com
*
* Contact: Simon Que <sque@ti.com>
* Hari Kanigeri <h-kanigeri2@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* 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/kernel.h>
#include <linux/init.h>
#include <linux/err.h>
#include <plat/omap_hwmod.h>
#include <plat/omap_device.h>
struct omap_device_pm_latency omap_spinlock_latency[] = {
{
.deactivate_func = omap_device_idle_hwmods,
.activate_func = omap_device_enable_hwmods,
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
}
};
int __init hwspinlocks_init(void)
{
int retval = 0;
struct omap_hwmod *oh;
struct omap_device *od;
const char *oh_name = "spinlock";
const char *dev_name = "omap_hwspinlock";
/*
* Hwmod lookup will fail in case our platform doesn't support the
* hardware spinlock module, so it is safe to run this initcall
* on all omaps
*/
oh = omap_hwmod_lookup(oh_name);
if (oh == NULL)
return -EINVAL;
od = omap_device_build(dev_name, 0, oh, NULL, 0,
omap_spinlock_latency,
ARRAY_SIZE(omap_spinlock_latency), false);
if (IS_ERR(od)) {
pr_err("Can't build omap_device for %s:%s\n", dev_name,
oh_name);
retval = PTR_ERR(od);
}
return retval;
}
/* early board code might need to reserve specific hwspinlock instances */
postcore_initcall(hwspinlocks_init);
|
