tegra_cpu_car.h

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/*
 * 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 __MACH_TEGRA_CPU_CAR_H
#define __MACH_TEGRA_CPU_CAR_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
 */
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);
};

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);
}

void tegra20_cpu_car_ops_init(void);
void tegra30_cpu_car_ops_init(void);

#endif /* __MACH_TEGRA_CPU_CAR_H */