src/soc/rockchip/rk3399/timer.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <device/mmio.h>
   4 #include <delay.h>
   5 #include <soc/timer.h>
   6 #include <stdint.h>
   7 #include <timer.h>
   8
   9 static uint64_t timer_raw_value(void)
  10 {
  11         uint64_t value0;
  12         uint64_t value1;
  13
  14         value0 = (uint64_t)read32(&timer0_ptr->timer_cur_value0);
  15         value1 = (uint64_t)read32(&timer0_ptr->timer_cur_value1);
  16
  17         return value0 | value1<<32;
  18 }
  19
  20 void timer_monotonic_get(struct mono_time *mt)
  21 {
  22         mono_time_set_usecs(mt, timer_raw_value() / clocks_per_usec);
  23 }
  24
  25 void init_timer(void)
  26 {
  27         write32(&timer0_ptr->timer_load_count0, TIMER_LOAD_VAL);
  28         write32(&timer0_ptr->timer_load_count1, TIMER_LOAD_VAL);
  29         write32(&timer0_ptr->timer_load_count2, 0);
  30         write32(&timer0_ptr->timer_load_count3, 0);
  31         write32(&timer0_ptr->timer_ctrl_reg, 1);
  32 }