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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2021 StarFive Technology Co., Ltd.
* Author: Xingyu Wu <xingyu.wu@starfivetech.com>
* Samin Guo <samin.guo@starfivetech.com>
*/
#ifndef STARFIVE_TIMER_H
#define STARFIVE_TIMER_H
#define NR_TIMERS TIMERS_MAX
#define PER_TIMER_LEN 0x40
#define TIMER_BASE(x) ((TIMER_##x)*PER_TIMER_LEN)
/*
* JH7100 timwer TIMER_INT_STATUS:
* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
* | Bits | 08~31 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
* ----------------------------------------------------------
* | timer(n)_int | res | 6 | 5 | 4 | Wdt | 3 | 2 | 1 | 0 |
* ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
*
* Software can read this register to know which interrupt is occurred.
*/
#define STF_TIMER_INT_STATUS 0x00
#define STF_TIMER_CTL 0x04
#define STF_TIMER_LOAD 0x08
#define STF_TIMER_ENABLE 0x10
#define STF_TIMER_RELOAD 0x14
#define STF_TIMER_VALUE 0x18
#define STF_TIMER_INT_CLR 0x20
#define STF_TIMER_INT_MASK 0x24
#define INT_STATUS_CLR_AVA BIT(1)
enum STF_TIMERS {
TIMER_0 = 0,
TIMER_1,
TIMER_2,
TIMER_3,
TIMER_4, /*WDT*/
TIMER_5,
TIMER_6,
TIMER_7,
TIMERS_MAX
};
enum TIMERI_INTMASK {
INTMASK_ENABLE_DIS = 0,
INTMASK_ENABLE = 1
};
enum TIMER_MOD {
MOD_CONTIN = 0,
MOD_SINGLE = 1
};
enum TIMER_CTL_EN {
TIMER_ENA_DIS = 0,
TIMER_ENA = 1
};
enum {
INT_CLR_AVAILABLE = 0,
INT_CLR_NOT_AVAILABLE = 1
};
struct starfive_timer {
u32 ctrl;
u32 load;
u32 enable;
u32 reload;
u32 value;
u32 intclr;
u32 intmask;
u32 wdt_lock; /* 0x3c+i*0x40 watchdog use ONLY */
u32 timer_base[NR_TIMERS];
};
struct starfive_timer_misc_count {
u8 clk_count;
bool flg_init_clk;
};
struct starfive_clkevt {
struct clock_event_device evt;
struct clocksource cs;
struct device_node *device_node;
struct starfive_timer_misc_count *misc;
struct clk *clk;
char name[20];
int index;
int irq;
u64 periodic;
u64 rate;
u32 reload_val;
void __iomem *base;
void __iomem *ctrl;
void __iomem *load;
void __iomem *enable;
void __iomem *reload;
void __iomem *value;
void __iomem *intclr;
void __iomem *intmask;
};
#endif /* STARFIVE_TIMER_H */
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