linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Faraday Technology FTTMR010 timer driver

 * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>

 *

 * Based on a rewrite of arch/arm/mach-gemini/timer.c:

 * Copyright (C) 2001-2006 Storlink, Corp.

 * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>

 */

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/of.h>

#include <linux/of_address.h>

#include <linux/of_irq.h>

#include <linux/clockchips.h>

#include <linux/clocksource.h>

#include <linux/sched_clock.h>

#include <linux/clk.h>

#include <linux/slab.h>

#include <linux/bitops.h>

#include <linux/delay.h>

​

/*

 * Register definitions common for all the timer variants.

 */

#define TIMER1_COUNT        (0x00)

#define TIMER1_LOAD     (0x04)

#define TIMER1_MATCH1       (0x08)

#define TIMER1_MATCH2       (0x0c)

#define TIMER2_COUNT        (0x10)

#define TIMER2_LOAD     (0x14)

#define TIMER2_MATCH1       (0x18)

#define TIMER2_MATCH2       (0x1c)

#define TIMER3_COUNT        (0x20)

#define TIMER3_LOAD     (0x24)

#define TIMER3_MATCH1       (0x28)

#define TIMER3_MATCH2       (0x2c)

#define TIMER_CR        (0x30)

​

/*

 * Control register (TMC30) bit fields for fttmr010/gemini/moxart timers.

 */

#define TIMER_1_CR_ENABLE   BIT(0)

#define TIMER_1_CR_CLOCK    BIT(1)

#define TIMER_1_CR_INT      BIT(2)

#define TIMER_2_CR_ENABLE   BIT(3)

#define TIMER_2_CR_CLOCK    BIT(4)

#define TIMER_2_CR_INT      BIT(5)

#define TIMER_3_CR_ENABLE   BIT(6)

#define TIMER_3_CR_CLOCK    BIT(7)

#define TIMER_3_CR_INT      BIT(8)

#define TIMER_1_CR_UPDOWN   BIT(9)

#define TIMER_2_CR_UPDOWN   BIT(10)

#define TIMER_3_CR_UPDOWN   BIT(11)

​

/*

 * Control register (TMC30) bit fields for aspeed ast2400/ast2500 timers.

 * The aspeed timers move bits around in the control register and lacks

 * bits for setting the timer to count upwards.

 */

#define TIMER_1_CR_ASPEED_ENABLE    BIT(0)

#define TIMER_1_CR_ASPEED_CLOCK     BIT(1)

#define TIMER_1_CR_ASPEED_INT       BIT(2)