Commit | Line | Data |
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6f88e9bc KH |
1 | /* |
2 | * pm.c - Common OMAP2+ power management-related code | |
3 | * | |
4 | * Copyright (C) 2010 Texas Instruments, Inc. | |
5 | * Copyright (C) 2010 Nokia Corporation | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/io.h> | |
15 | #include <linux/err.h> | |
16 | ||
17 | #include <plat/omap-pm.h> | |
18 | #include <plat/omap_device.h> | |
19 | #include <plat/common.h> | |
20 | ||
21 | static struct omap_device_pm_latency *pm_lats; | |
22 | ||
23 | static struct device *mpu_dev; | |
24 | static struct device *dsp_dev; | |
25 | static struct device *l3_dev; | |
26 | ||
27 | struct device *omap2_get_mpuss_device(void) | |
28 | { | |
29 | WARN_ON_ONCE(!mpu_dev); | |
30 | return mpu_dev; | |
31 | } | |
32 | ||
33 | struct device *omap2_get_dsp_device(void) | |
34 | { | |
35 | WARN_ON_ONCE(!dsp_dev); | |
36 | return dsp_dev; | |
37 | } | |
38 | ||
39 | struct device *omap2_get_l3_device(void) | |
40 | { | |
41 | WARN_ON_ONCE(!l3_dev); | |
42 | return l3_dev; | |
43 | } | |
44 | ||
45 | /* static int _init_omap_device(struct omap_hwmod *oh, void *user) */ | |
46 | static int _init_omap_device(char *name, struct device **new_dev) | |
47 | { | |
48 | struct omap_hwmod *oh; | |
49 | struct omap_device *od; | |
50 | ||
51 | oh = omap_hwmod_lookup(name); | |
52 | if (WARN(!oh, "%s: could not find omap_hwmod for %s\n", | |
53 | __func__, name)) | |
54 | return -ENODEV; | |
55 | ||
56 | od = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false); | |
57 | if (WARN(IS_ERR(od), "%s: could not build omap_device for %s\n", | |
58 | __func__, name)) | |
59 | return -ENODEV; | |
60 | ||
61 | *new_dev = &od->pdev.dev; | |
62 | ||
63 | return 0; | |
64 | } | |
65 | ||
66 | /* | |
67 | * Build omap_devices for processors and bus. | |
68 | */ | |
69 | static void omap2_init_processor_devices(void) | |
70 | { | |
71 | _init_omap_device("mpu", &mpu_dev); | |
72 | _init_omap_device("iva", &dsp_dev); | |
73 | _init_omap_device("l3_main", &l3_dev); | |
74 | } | |
75 | ||
76 | static int __init omap2_common_pm_init(void) | |
77 | { | |
78 | omap2_init_processor_devices(); | |
79 | omap_pm_if_init(); | |
80 | ||
81 | return 0; | |
82 | } | |
83 | device_initcall(omap2_common_pm_init); | |
84 |