kernel_samsung_a34x-permissive/drivers/tee/gud/410/TlcTui/trustedui.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2019 TRUSTONIC LIMITED
 */

#include <linux/spinlock.h>
#include <linux/module.h>
#include <linux/t-base-tui.h>

static int trustedui_mode = TRUSTEDUI_MODE_OFF;
static int trustedui_blank_counter;

static DEFINE_SPINLOCK(trustedui_lock);

int trustedui_blank_inc(void)
{
	unsigned long flags;
	int newvalue;

	spin_lock_irqsave(&trustedui_lock, flags);
	newvalue = ++trustedui_blank_counter;
	spin_unlock_irqrestore(&trustedui_lock, flags);

	return newvalue;
}
EXPORT_SYMBOL(trustedui_blank_inc);

int trustedui_blank_dec(void)
{
	unsigned long flags;
	int newvalue;

	spin_lock_irqsave(&trustedui_lock, flags);
	newvalue = --trustedui_blank_counter;
	spin_unlock_irqrestore(&trustedui_lock, flags);

	return newvalue;
}
EXPORT_SYMBOL(trustedui_blank_dec);

int trustedui_blank_get_counter(void)
{
	unsigned long flags;
	int newvalue;

	spin_lock_irqsave(&trustedui_lock, flags);
	newvalue = trustedui_blank_counter;
	spin_unlock_irqrestore(&trustedui_lock, flags);

	return newvalue;
}
EXPORT_SYMBOL(trustedui_blank_get_counter);

void trustedui_blank_set_counter(int counter)
{
	unsigned long flags;

	spin_lock_irqsave(&trustedui_lock, flags);
	trustedui_blank_counter = counter;
	spin_unlock_irqrestore(&trustedui_lock, flags);
}
EXPORT_SYMBOL(trustedui_blank_set_counter);

int trustedui_get_current_mode(void)
{
	unsigned long flags;
	int mode;

	spin_lock_irqsave(&trustedui_lock, flags);
	mode = trustedui_mode;
	spin_unlock_irqrestore(&trustedui_lock, flags);

	return mode;
}
EXPORT_SYMBOL(trustedui_get_current_mode);

void trustedui_set_mode(int mode)
{
	unsigned long flags;

	spin_lock_irqsave(&trustedui_lock, flags);
	trustedui_mode = mode;
	spin_unlock_irqrestore(&trustedui_lock, flags);
}
EXPORT_SYMBOL(trustedui_set_mode);

int trustedui_set_mask(int mask)
{
	unsigned long flags;
	int mode;

	spin_lock_irqsave(&trustedui_lock, flags);
	mode = trustedui_mode |= mask;
	spin_unlock_irqrestore(&trustedui_lock, flags);

	return mode;
}
EXPORT_SYMBOL(trustedui_set_mask);

int trustedui_clear_mask(int mask)
{
	unsigned long flags;
	int mode;

	spin_lock_irqsave(&trustedui_lock, flags);
	mode = trustedui_mode &= ~mask;
	spin_unlock_irqrestore(&trustedui_lock, flags);

	return mode;
}
EXPORT_SYMBOL(trustedui_clear_mask);

MODULE_AUTHOR("Trustonic Limited");
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Kinibi TUI");