| Nishanth Menon | fd1478c | 2010-12-09 09:13:46 -0600 | [diff] [blame] | 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 */ |