Abhilash Kesavan | 6ccce69 | 2013-02-04 17:44:48 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 3 | * http://www.samsung.com/ |
| 4 | * |
| 5 | * EXYNOS PPMU header |
| 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 | #ifndef __DEVFREQ_EXYNOS_PPMU_H |
| 13 | #define __DEVFREQ_EXYNOS_PPMU_H __FILE__ |
| 14 | |
| 15 | #include <linux/ktime.h> |
| 16 | |
| 17 | /* For PPMU Control */ |
| 18 | #define PPMU_ENABLE BIT(0) |
| 19 | #define PPMU_DISABLE 0x0 |
| 20 | #define PPMU_CYCLE_RESET BIT(1) |
| 21 | #define PPMU_COUNTER_RESET BIT(2) |
| 22 | |
| 23 | #define PPMU_ENABLE_COUNT0 BIT(0) |
| 24 | #define PPMU_ENABLE_COUNT1 BIT(1) |
| 25 | #define PPMU_ENABLE_COUNT2 BIT(2) |
| 26 | #define PPMU_ENABLE_COUNT3 BIT(3) |
| 27 | #define PPMU_ENABLE_CYCLE BIT(31) |
| 28 | |
| 29 | #define PPMU_CNTENS 0x10 |
| 30 | #define PPMU_FLAG 0x50 |
| 31 | #define PPMU_CCNT_OVERFLOW BIT(31) |
| 32 | #define PPMU_CCNT 0x100 |
| 33 | |
| 34 | #define PPMU_PMCNT0 0x110 |
| 35 | #define PPMU_PMCNT_OFFSET 0x10 |
| 36 | #define PMCNT_OFFSET(x) (PPMU_PMCNT0 + (PPMU_PMCNT_OFFSET * x)) |
| 37 | |
| 38 | #define PPMU_BEVT0SEL 0x1000 |
| 39 | #define PPMU_BEVTSEL_OFFSET 0x100 |
| 40 | #define PPMU_BEVTSEL(x) (PPMU_BEVT0SEL + (ch * PPMU_BEVTSEL_OFFSET)) |
| 41 | |
| 42 | /* For Event Selection */ |
| 43 | #define RD_DATA_COUNT 0x5 |
| 44 | #define WR_DATA_COUNT 0x6 |
| 45 | #define RDWR_DATA_COUNT 0x7 |
| 46 | |
| 47 | enum ppmu_counter { |
| 48 | PPMU_PMNCNT0, |
| 49 | PPMU_PMCCNT1, |
| 50 | PPMU_PMNCNT2, |
| 51 | PPMU_PMNCNT3, |
| 52 | PPMU_PMNCNT_MAX, |
| 53 | }; |
| 54 | |
| 55 | struct bus_opp_table { |
| 56 | unsigned int idx; |
| 57 | unsigned long clk; |
| 58 | unsigned long volt; |
| 59 | }; |
| 60 | |
| 61 | struct exynos_ppmu { |
| 62 | void __iomem *hw_base; |
| 63 | unsigned int ccnt; |
| 64 | unsigned int event[PPMU_PMNCNT_MAX]; |
| 65 | unsigned int count[PPMU_PMNCNT_MAX]; |
| 66 | unsigned long long ns; |
| 67 | ktime_t reset_time; |
| 68 | bool ccnt_overflow; |
| 69 | bool count_overflow[PPMU_PMNCNT_MAX]; |
| 70 | }; |
| 71 | |
| 72 | void exynos_ppmu_reset(void __iomem *ppmu_base); |
| 73 | void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch, |
| 74 | unsigned int evt); |
| 75 | void exynos_ppmu_start(void __iomem *ppmu_base); |
| 76 | void exynos_ppmu_stop(void __iomem *ppmu_base); |
| 77 | unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch); |
| 78 | #endif /* __DEVFREQ_EXYNOS_PPMU_H */ |