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author | Prashant Gaikwad <pgaikwad@nvidia.com> | 2013-01-11 13:16:21 +0530 |
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committer | Stephen Warren <swarren@nvidia.com> | 2013-01-28 11:19:06 -0700 |
commit | 89572c77cdffdf24f8fec50d3e38db6a18c04dbe (patch) | |
tree | 4cea88f2675f249077c945c59dbd9c05debbf9ec /include/linux/clk | |
parent | c7736edf1b1734455c186deec53a0aa7f8fa87ea (diff) | |
download | linux-stable-89572c77cdffdf24f8fec50d3e38db6a18c04dbe.tar.gz linux-stable-89572c77cdffdf24f8fec50d3e38db6a18c04dbe.tar.bz2 linux-stable-89572c77cdffdf24f8fec50d3e38db6a18c04dbe.zip |
ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.h
tegra_cpu_car_ops struct is going to be accessed from drivers/clk/tegra.
Move the tegra_cpu_car_ops to include/linux/clk/tegra.h.
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'include/linux/clk')
-rw-r--r-- | include/linux/clk/tegra.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h new file mode 100644 index 000000000000..0977f2a24757 --- /dev/null +++ b/include/linux/clk/tegra.h @@ -0,0 +1,124 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __LINUX_CLK_TEGRA_H_ +#define __LINUX_CLK_TEGRA_H_ + +/* + * Tegra CPU clock and reset control ops + * + * wait_for_reset: + * keep waiting until the CPU in reset state + * put_in_reset: + * put the CPU in reset state + * out_of_reset: + * release the CPU from reset state + * enable_clock: + * CPU clock un-gate + * disable_clock: + * CPU clock gate + * rail_off_ready: + * CPU is ready for rail off + * suspend: + * save the clock settings when CPU go into low-power state + * resume: + * restore the clock settings when CPU exit low-power state + */ +struct tegra_cpu_car_ops { + void (*wait_for_reset)(u32 cpu); + void (*put_in_reset)(u32 cpu); + void (*out_of_reset)(u32 cpu); + void (*enable_clock)(u32 cpu); + void (*disable_clock)(u32 cpu); +#ifdef CONFIG_PM_SLEEP + bool (*rail_off_ready)(void); + void (*suspend)(void); + void (*resume)(void); +#endif +}; + +extern struct tegra_cpu_car_ops *tegra_cpu_car_ops; + +static inline void tegra_wait_cpu_in_reset(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->wait_for_reset)) + return; + + tegra_cpu_car_ops->wait_for_reset(cpu); +} + +static inline void tegra_put_cpu_in_reset(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->put_in_reset)) + return; + + tegra_cpu_car_ops->put_in_reset(cpu); +} + +static inline void tegra_cpu_out_of_reset(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->out_of_reset)) + return; + + tegra_cpu_car_ops->out_of_reset(cpu); +} + +static inline void tegra_enable_cpu_clock(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->enable_clock)) + return; + + tegra_cpu_car_ops->enable_clock(cpu); +} + +static inline void tegra_disable_cpu_clock(u32 cpu) +{ + if (WARN_ON(!tegra_cpu_car_ops->disable_clock)) + return; + + tegra_cpu_car_ops->disable_clock(cpu); +} + +#ifdef CONFIG_PM_SLEEP +static inline bool tegra_cpu_rail_off_ready(void) +{ + if (WARN_ON(!tegra_cpu_car_ops->rail_off_ready)) + return false; + + return tegra_cpu_car_ops->rail_off_ready(); +} + +static inline void tegra_cpu_clock_suspend(void) +{ + if (WARN_ON(!tegra_cpu_car_ops->suspend)) + return; + + tegra_cpu_car_ops->suspend(); +} + +static inline void tegra_cpu_clock_resume(void) +{ + if (WARN_ON(!tegra_cpu_car_ops->resume)) + return; + + tegra_cpu_car_ops->resume(); +} +#endif + +void tegra20_cpu_car_ops_init(void); +void tegra30_cpu_car_ops_init(void); + +#endif /* __LINUX_CLK_TEGRA_H_ */ |