arch/mips/include/asm/mach-jz4740/timer.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
   4  *  JZ4740 platform timer support
   5  */
   6
   7 #ifndef __ASM_MACH_JZ4740_TIMER
   8 #define __ASM_MACH_JZ4740_TIMER
   9
  10 #define JZ_REG_TIMER_STOP               0x0C
  11 #define JZ_REG_TIMER_STOP_SET           0x1C
  12 #define JZ_REG_TIMER_STOP_CLEAR         0x2C
  13 #define JZ_REG_TIMER_ENABLE             0x00
  14 #define JZ_REG_TIMER_ENABLE_SET         0x04
  15 #define JZ_REG_TIMER_ENABLE_CLEAR       0x08
  16 #define JZ_REG_TIMER_FLAG               0x10
  17 #define JZ_REG_TIMER_FLAG_SET           0x14
  18 #define JZ_REG_TIMER_FLAG_CLEAR         0x18
  19 #define JZ_REG_TIMER_MASK               0x20
  20 #define JZ_REG_TIMER_MASK_SET           0x24
  21 #define JZ_REG_TIMER_MASK_CLEAR         0x28
  22
  23 #define JZ_REG_TIMER_DFR(x) (((x) * 0x10) + 0x30)
  24 #define JZ_REG_TIMER_DHR(x) (((x) * 0x10) + 0x34)
  25 #define JZ_REG_TIMER_CNT(x) (((x) * 0x10) + 0x38)
  26 #define JZ_REG_TIMER_CTRL(x) (((x) * 0x10) + 0x3C)
  27
  28 #define JZ_TIMER_IRQ_HALF(x) BIT((x) + 0x10)
  29 #define JZ_TIMER_IRQ_FULL(x) BIT(x)
  30
  31 #define JZ_TIMER_CTRL_PWM_ABBRUPT_SHUTDOWN      BIT(9)
  32 #define JZ_TIMER_CTRL_PWM_ACTIVE_LOW            BIT(8)
  33 #define JZ_TIMER_CTRL_PWM_ENABLE                BIT(7)
  34 #define JZ_TIMER_CTRL_PRESCALE_MASK             0x1c
  35 #define JZ_TIMER_CTRL_PRESCALE_OFFSET           0x3
  36 #define JZ_TIMER_CTRL_PRESCALE_1                (0 << 3)
  37 #define JZ_TIMER_CTRL_PRESCALE_4                (1 << 3)
  38 #define JZ_TIMER_CTRL_PRESCALE_16               (2 << 3)
  39 #define JZ_TIMER_CTRL_PRESCALE_64               (3 << 3)
  40 #define JZ_TIMER_CTRL_PRESCALE_256              (4 << 3)
  41 #define JZ_TIMER_CTRL_PRESCALE_1024             (5 << 3)
  42
  43 #define JZ_TIMER_CTRL_PRESCALER(x) ((x) << JZ_TIMER_CTRL_PRESCALE_OFFSET)
  44
  45 #define JZ_TIMER_CTRL_SRC_EXT           BIT(2)
  46 #define JZ_TIMER_CTRL_SRC_RTC           BIT(1)
  47 #define JZ_TIMER_CTRL_SRC_PCLK          BIT(0)
  48
  49 extern void __iomem *jz4740_timer_base;
  50 void __init jz4740_timer_init(void);
  51
  52 void jz4740_timer_enable_watchdog(void);
  53 void jz4740_timer_disable_watchdog(void);
  54
  55 static inline void jz4740_timer_stop(unsigned int timer)
  56 {
  57         writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_SET);
  58 }
  59
  60 static inline void jz4740_timer_start(unsigned int timer)
  61 {
  62         writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR);
  63 }
  64
  65 static inline bool jz4740_timer_is_enabled(unsigned int timer)
  66 {
  67         return readb(jz4740_timer_base + JZ_REG_TIMER_ENABLE) & BIT(timer);
  68 }
  69
  70 static inline void jz4740_timer_enable(unsigned int timer)
  71 {
  72         writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_SET);
  73 }
  74
  75 static inline void jz4740_timer_disable(unsigned int timer)
  76 {
  77         writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_CLEAR);
  78 }
  79
  80 static inline void jz4740_timer_set_period(unsigned int timer, uint16_t period)
  81 {
  82         writew(period, jz4740_timer_base + JZ_REG_TIMER_DFR(timer));
  83 }
  84
  85 static inline void jz4740_timer_set_duty(unsigned int timer, uint16_t duty)
  86 {
  87         writew(duty, jz4740_timer_base + JZ_REG_TIMER_DHR(timer));
  88 }
  89
  90 static inline void jz4740_timer_set_count(unsigned int timer, uint16_t count)
  91 {
  92         writew(count, jz4740_timer_base + JZ_REG_TIMER_CNT(timer));
  93 }
  94
  95 static inline uint16_t jz4740_timer_get_count(unsigned int timer)
  96 {
  97         return readw(jz4740_timer_base + JZ_REG_TIMER_CNT(timer));
  98 }
  99
 100 static inline void jz4740_timer_ack_full(unsigned int timer)
 101 {
 102         writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR);
 103 }
 104
 105 static inline void jz4740_timer_irq_full_enable(unsigned int timer)
 106 {
 107         writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR);
 108         writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_CLEAR);
 109 }
 110
 111 static inline void jz4740_timer_irq_full_disable(unsigned int timer)
 112 {
 113         writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_SET);
 114 }
 115
 116 static inline void jz4740_timer_set_ctrl(unsigned int timer, uint16_t ctrl)
 117 {
 118         writew(ctrl, jz4740_timer_base + JZ_REG_TIMER_CTRL(timer));
 119 }
 120
 121 static inline uint16_t jz4740_timer_get_ctrl(unsigned int timer)
 122 {
 123         return readw(jz4740_timer_base + JZ_REG_TIMER_CTRL(timer));
 124 }
 125
 126 #endif