Commit | Line | Data |
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7bb412a6 SQ |
1 | /* |
2 | * OMAP hardware spinlock device initialization | |
3 | * | |
4 | * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com | |
5 | * | |
6 | * Contact: Simon Que <sque@ti.com> | |
7 | * Hari Kanigeri <h-kanigeri2@ti.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU General Public License | |
11 | * version 2 as published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/err.h> | |
22 | ||
23 | #include <plat/omap_hwmod.h> | |
24 | #include <plat/omap_device.h> | |
25 | ||
26 | struct omap_device_pm_latency omap_spinlock_latency[] = { | |
27 | { | |
28 | .deactivate_func = omap_device_idle_hwmods, | |
29 | .activate_func = omap_device_enable_hwmods, | |
30 | .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, | |
31 | } | |
32 | }; | |
33 | ||
34 | int __init hwspinlocks_init(void) | |
35 | { | |
36 | int retval = 0; | |
37 | struct omap_hwmod *oh; | |
38 | struct omap_device *od; | |
39 | const char *oh_name = "spinlock"; | |
40 | const char *dev_name = "omap_hwspinlock"; | |
41 | ||
42 | /* | |
43 | * Hwmod lookup will fail in case our platform doesn't support the | |
44 | * hardware spinlock module, so it is safe to run this initcall | |
45 | * on all omaps | |
46 | */ | |
47 | oh = omap_hwmod_lookup(oh_name); | |
48 | if (oh == NULL) | |
49 | return -EINVAL; | |
50 | ||
51 | od = omap_device_build(dev_name, 0, oh, NULL, 0, | |
52 | omap_spinlock_latency, | |
53 | ARRAY_SIZE(omap_spinlock_latency), false); | |
54 | if (IS_ERR(od)) { | |
55 | pr_err("Can't build omap_device for %s:%s\n", dev_name, | |
56 | oh_name); | |
57 | retval = PTR_ERR(od); | |
58 | } | |
59 | ||
60 | return retval; | |
61 | } | |
62 | /* early board code might need to reserve specific hwspinlock instances */ | |
63 | postcore_initcall(hwspinlocks_init); |