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    Y// SPDX-License-Identifier: GPL-2.0
#undef _GNU_SOURCE
#include <string.h>
#include <stdio.h>
#include <linux/string.h>

/*
 * The tools so far have been using the strerror_r() GNU variant, that returns
 * a string, be it the buffer passed or something else.
 *
 * But that, besides being tricky in cases where we expect that the function
 * using strerror_r() returns the error formatted in a provided buffer (we have
 * to check if it returned something else and copy that instead), breaks the
 * build on systems not using glibc, like Alpine Linux, where musl libc is
 * used.
 *
 * So, introduce yet another wrapper, str_error_r(), that has the GNU
 * interface, but uses the portable XSI variant of strerror_r(), so that users
 * rest asured that the provided buffer is used and it is what is returned.
 */
char *str_error_r(int errnum, char *buf, size_t buflen)
{
	int err = strerror_r(errnum, buf, buflen);
	if (err)
		snprintf(buf, buflen, "INTERNAL ERROR: strerror_r(%d, [buf], %zd)=%d", errnum, buflen, err);
	return buf;
}
  	   [€ДК0їМ  	   ]€ЙК0їМ     _€ЙКѓpИїМ z    _/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2012-2020, NVIDIA CORPORATION.  All rights reserved.
 */

#ifndef __LINUX_CLK_TEGRA_H_
#define __LINUX_CLK_TEGRA_H_

#include <linux/types.h>
#include <linux/bug.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();
}
#else
static inline bool tegra_cpu_rail_off_ready(void)
{
	return false;
}

static inline void tegra_cpu_clock_suspend(void)
{
}

static inline void tegra_cpu_clock_resume(void)
{
}
#endif

struct clk;
struct tegra_emc;

typedef long (tegra20_clk_emc_round_cb)(unsigned long rate,
					unsigned long min_rate,
					unsigned long max_rate,
					void *arg);
typedef int (tegra124_emc_prepare_timing_change_cb)(struct tegra_emc *emc,
						    unsigned long rate);
typedef void (tegra124_emc_complete_timing_