Commit | Line | Data |
---|---|---|
fd1478cd NM |
1 | /* |
2 | * OMAP SoC specific OPP Data helpers | |
3 | * | |
4 | * Copyright (C) 2009-2010 Texas Instruments Incorporated - http://www.ti.com/ | |
5 | * Nishanth Menon | |
6 | * Kevin Hilman | |
7 | * Copyright (C) 2010 Nokia Corporation. | |
8 | * Eduardo Valentin | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any | |
15 | * kind, whether express or implied; without even the implied warranty | |
16 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | */ | |
19 | #ifndef __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H | |
20 | #define __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H | |
21 | ||
22 | #include <plat/omap_hwmod.h> | |
23 | ||
24 | /* | |
25 | * *BIG FAT WARNING*: | |
26 | * USE the following ONLY in opp data initialization common to an SoC. | |
27 | * DO NOT USE these in board files/pm core etc. | |
28 | */ | |
29 | ||
30 | /** | |
31 | * struct omap_opp_def - OMAP OPP Definition | |
32 | * @hwmod_name: Name of the hwmod for this domain | |
33 | * @freq: Frequency in hertz corresponding to this OPP | |
34 | * @u_volt: Nominal voltage in microvolts corresponding to this OPP | |
35 | * @default_available: True/false - is this OPP available by default | |
36 | * | |
37 | * OMAP SOCs have a standard set of tuples consisting of frequency and voltage | |
38 | * pairs that the device will support per voltage domain. This is called | |
39 | * Operating Points or OPP. The actual definitions of OMAP Operating Points | |
40 | * varies over silicon within the same family of devices. For a specific | |
41 | * domain, you can have a set of {frequency, voltage} pairs and this is denoted | |
42 | * by an array of omap_opp_def. As the kernel boots and more information is | |
43 | * available, a set of these are activated based on the precise nature of | |
44 | * device the kernel boots up on. It is interesting to remember that each IP | |
45 | * which belongs to a voltage domain may define their own set of OPPs on top | |
46 | * of this - but this is handled by the appropriate driver. | |
47 | */ | |
48 | struct omap_opp_def { | |
49 | char *hwmod_name; | |
50 | ||
51 | unsigned long freq; | |
52 | unsigned long u_volt; | |
53 | ||
54 | bool default_available; | |
55 | }; | |
56 | ||
57 | /* | |
58 | * Initialization wrapper used to define an OPP for OMAP variants. | |
59 | */ | |
60 | #define OPP_INITIALIZER(_hwmod_name, _enabled, _freq, _uv) \ | |
61 | { \ | |
62 | .hwmod_name = _hwmod_name, \ | |
63 | .default_available = _enabled, \ | |
64 | .freq = _freq, \ | |
65 | .u_volt = _uv, \ | |
66 | } | |
67 | ||
68 | /* Use this to initialize the default table */ | |
69 | extern int __init omap_init_opp_table(struct omap_opp_def *opp_def, | |
70 | u32 opp_def_size); | |
71 | ||
72 | #endif /* __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H */ |