| Nishanth Menon | e1f60b2 | 2010-10-13 00:13:10 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Generic OPP Interface |
| 3 | * |
| 4 | * Copyright (C) 2009-2010 Texas Instruments Incorporated. |
| 5 | * Nishanth Menon |
| 6 | * Romit Dasgupta |
| 7 | * Kevin Hilman |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License version 2 as |
| 11 | * published by the Free Software Foundation. |
| 12 | */ |
| 13 | |
| 14 | #ifndef __LINUX_OPP_H__ |
| 15 | #define __LINUX_OPP_H__ |
| 16 | |
| 17 | #include <linux/err.h> |
| 18 | #include <linux/cpufreq.h> |
| 19 | |
| 20 | struct opp; |
| 21 | |
| 22 | #if defined(CONFIG_PM_OPP) |
| 23 | |
| 24 | unsigned long opp_get_voltage(struct opp *opp); |
| 25 | |
| 26 | unsigned long opp_get_freq(struct opp *opp); |
| 27 | |
| 28 | int opp_get_opp_count(struct device *dev); |
| 29 | |
| 30 | struct opp *opp_find_freq_exact(struct device *dev, unsigned long freq, |
| 31 | bool available); |
| 32 | |
| 33 | struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq); |
| 34 | |
| 35 | struct opp *opp_find_freq_ceil(struct device *dev, unsigned long *freq); |
| 36 | |
| 37 | int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt); |
| 38 | |
| 39 | int opp_enable(struct device *dev, unsigned long freq); |
| 40 | |
| 41 | int opp_disable(struct device *dev, unsigned long freq); |
| 42 | |
| 43 | #else |
| 44 | static inline unsigned long opp_get_voltage(struct opp *opp) |
| 45 | { |
| 46 | return 0; |
| 47 | } |
| 48 | |
| 49 | static inline unsigned long opp_get_freq(struct opp *opp) |
| 50 | { |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | static inline int opp_get_opp_count(struct device *dev) |
| 55 | { |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | static inline struct opp *opp_find_freq_exact(struct device *dev, |
| 60 | unsigned long freq, bool available) |
| 61 | { |
| 62 | return ERR_PTR(-EINVAL); |
| 63 | } |
| 64 | |
| 65 | static inline struct opp *opp_find_freq_floor(struct device *dev, |
| 66 | unsigned long *freq) |
| 67 | { |
| 68 | return ERR_PTR(-EINVAL); |
| 69 | } |
| 70 | |
| 71 | static inline struct opp *opp_find_freq_ceil(struct device *dev, |
| 72 | unsigned long *freq) |
| 73 | { |
| 74 | return ERR_PTR(-EINVAL); |
| 75 | } |
| 76 | |
| 77 | static inline int opp_add(struct device *dev, unsigned long freq, |
| 78 | unsigned long u_volt) |
| 79 | { |
| 80 | return -EINVAL; |
| 81 | } |
| 82 | |
| 83 | static inline int opp_enable(struct device *dev, unsigned long freq) |
| 84 | { |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | static inline int opp_disable(struct device *dev, unsigned long freq) |
| 89 | { |
| 90 | return 0; |
| 91 | } |
| 92 | #endif /* CONFIG_PM */ |
| 93 | |
| 94 | #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) |
| 95 | int opp_init_cpufreq_table(struct device *dev, |
| 96 | struct cpufreq_frequency_table **table); |
| 97 | #else |
| 98 | static inline int opp_init_cpufreq_table(struct device *dev, |
| 99 | struct cpufreq_frequency_table **table) |
| 100 | { |
| 101 | return -EINVAL; |
| 102 | } |
| 103 | #endif /* CONFIG_CPU_FREQ */ |
| 104 | |
| 105 | #endif /* __LINUX_OPP_H__ */ |