forked from rrcarlosr/Jetpack
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/*
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* Copyright (c) 2010 Google, Inc
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* Copyright (C) 2011-2017, NVIDIA Corporation. All rights reserved.
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*
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* Author:
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* Colin Cross <ccross@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _LINUX_TEGRA_POWERGATE_H_
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#define _LINUX_TEGRA_POWERGATE_H_
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#include <linux/init.h>
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#include <linux/notifier.h>
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#define TEGRA_CPU_POWERGATE_ID(cpu) \
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tegra_powergate_cpuid_to_powergate_id(cpu)
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#ifdef CONFIG_TEGRA_POWERGATE
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int tegra_cpu_powergate_id(int cpuid);
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int tegra_powergate_is_powered(int id);
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int tegra_powergate_mc_disable(int id);
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int tegra_powergate_mc_enable(int id);
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int tegra_powergate_mc_flush(int id);
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int tegra_powergate_mc_flush_done(int id);
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bool tegra_powergate_check_clamping(int id);
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int tegra_powergate_remove_clamping(int id);
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const char *tegra_powergate_get_name(int id);
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/*
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* Functions to powergate un-powergate partitions.
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* Drivers are responsible for clk enable-disable
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*
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* tegra_powergate_partition() should be called with all
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* required clks OFF. Drivers should disable clks BEFORE
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* calling this fucntion
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*
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* tegra_unpowergate_partition should be called with all
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* required clks OFF. Returns with all clks OFF. Drivers
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* should enable all clks AFTER this function
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*/
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int tegra_powergate_partition(int id);
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int tegra_unpowergate_partition(int id);
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int slcg_register_notifier(int id, struct notifier_block *nb);
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int slcg_unregister_notifier(int id, struct notifier_block *nb);
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int tegra_powergate_cpuid_to_powergate_id(int cpu);
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#else
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static inline int tegra_powergate_is_powered(int id)
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{
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return 1;
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}
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static inline int tegra_powergate_partition(int id)
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{
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return -ENOSYS;
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}
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static inline int tegra_unpowergate_partition(int id)
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{
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return -ENOSYS;
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}
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static inline bool tegra_powergate_check_clamping(int id)
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{
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return false;
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}
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static inline int tegra_powergate_remove_clamping(int id)
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{
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return -EOPNOTSUPP;
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}
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static inline int slcg_register_notifier(int id, struct notifier_block *nb)
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{
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return 0;
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}
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static inline int slcg_unregister_notifier(int id, struct notifier_block *nb)
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{
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return 0;
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}
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static inline int tegra_powergate_cpuid_to_powergate_id(int cpu)
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{
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return -1;
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}
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#endif
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#endif /* _LINUX_TEGRA_POWERGATE_H_ */
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