| Joseph Lo | dab403e | 2012-08-16 17:31:48 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms and conditions of the GNU General Public License, |
| 6 | * version 2, as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 11 | * more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 15 | */ |
| 16 | |
| 17 | #ifndef __MACH_TEGRA_CPU_CAR_H |
| 18 | #define __MACH_TEGRA_CPU_CAR_H |
| 19 | |
| 20 | /* |
| 21 | * Tegra CPU clock and reset control ops |
| 22 | * |
| 23 | * wait_for_reset: |
| 24 | * keep waiting until the CPU in reset state |
| 25 | * put_in_reset: |
| 26 | * put the CPU in reset state |
| 27 | * out_of_reset: |
| 28 | * release the CPU from reset state |
| 29 | * enable_clock: |
| 30 | * CPU clock un-gate |
| 31 | * disable_clock: |
| 32 | * CPU clock gate |
| 33 | */ |
| 34 | struct tegra_cpu_car_ops { |
| 35 | void (*wait_for_reset)(u32 cpu); |
| 36 | void (*put_in_reset)(u32 cpu); |
| 37 | void (*out_of_reset)(u32 cpu); |
| 38 | void (*enable_clock)(u32 cpu); |
| 39 | void (*disable_clock)(u32 cpu); |
| 40 | }; |
| 41 | |
| 42 | extern struct tegra_cpu_car_ops *tegra_cpu_car_ops; |
| 43 | |
| 44 | static inline void tegra_wait_cpu_in_reset(u32 cpu) |
| 45 | { |
| 46 | if (WARN_ON(!tegra_cpu_car_ops->wait_for_reset)) |
| 47 | return; |
| 48 | |
| 49 | tegra_cpu_car_ops->wait_for_reset(cpu); |
| 50 | } |
| 51 | |
| 52 | static inline void tegra_put_cpu_in_reset(u32 cpu) |
| 53 | { |
| 54 | if (WARN_ON(!tegra_cpu_car_ops->put_in_reset)) |
| 55 | return; |
| 56 | |
| 57 | tegra_cpu_car_ops->put_in_reset(cpu); |
| 58 | } |
| 59 | |
| 60 | static inline void tegra_cpu_out_of_reset(u32 cpu) |
| 61 | { |
| 62 | if (WARN_ON(!tegra_cpu_car_ops->out_of_reset)) |
| 63 | return; |
| 64 | |
| 65 | tegra_cpu_car_ops->out_of_reset(cpu); |
| 66 | } |
| 67 | |
| 68 | static inline void tegra_enable_cpu_clock(u32 cpu) |
| 69 | { |
| 70 | if (WARN_ON(!tegra_cpu_car_ops->enable_clock)) |
| 71 | return; |
| 72 | |
| 73 | tegra_cpu_car_ops->enable_clock(cpu); |
| 74 | } |
| 75 | |
| 76 | static inline void tegra_disable_cpu_clock(u32 cpu) |
| 77 | { |
| 78 | if (WARN_ON(!tegra_cpu_car_ops->disable_clock)) |
| 79 | return; |
| 80 | |
| 81 | tegra_cpu_car_ops->disable_clock(cpu); |
| 82 | } |
| 83 | |
| 84 | void tegra20_cpu_car_ops_init(void); |
| 85 | void tegra30_cpu_car_ops_init(void); |
| 86 | |
| 87 | #endif /* __MACH_TEGRA_CPU_CAR_H */ |