kernel-ark/include/soc/tegra/pm.h
Paul Walmsley 2b20b6164e soc/tegra: pmc: restrict compilation of suspend-related support to ARM
Tegra SoCs with 64-bit ARM support don't currently support deep CPU
low-power states in mainline Linux.  When this support is added in the
future, it will probably look rather different from the existing
32-bit ARM support, since the ARM64 maintainers' strong preference is
to use PSCI to implement it.

So, for the time being, prevent the CPU suspend-related code and data
in the Tegra PMC driver from compiling on ARM64.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Allen Martin <amartin@nvidia.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-01-09 13:41:19 +01:00

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C

/*
* Copyright (C) 2014 NVIDIA Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __SOC_TEGRA_PM_H__
#define __SOC_TEGRA_PM_H__
enum tegra_suspend_mode {
TEGRA_SUSPEND_NONE = 0,
TEGRA_SUSPEND_LP2, /* CPU voltage off */
TEGRA_SUSPEND_LP1, /* CPU voltage off, DRAM self-refresh */
TEGRA_SUSPEND_LP0, /* CPU + core voltage off, DRAM self-refresh */
TEGRA_MAX_SUSPEND_MODE,
};
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
enum tegra_suspend_mode
tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode);
/* low-level resume entry point */
void tegra_resume(void);
#else
static inline enum tegra_suspend_mode
tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode)
{
return TEGRA_SUSPEND_NONE;
}
static inline void tegra_resume(void)
{
}
#endif /* CONFIG_PM_SLEEP */
#endif /* __SOC_TEGRA_PM_H__ */