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milkymist-sysctl: fix timers
Prevent timers from firing right after starting. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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@ -140,24 +140,8 @@ static void sysctl_write(void *opaque, target_phys_addr_t addr, uint32_t value)
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case R_GPIO_OUT:
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case R_GPIO_INTEN:
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case R_TIMER0_COUNTER:
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if (value > s->regs[R_TIMER0_COUNTER]) {
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value = s->regs[R_TIMER0_COUNTER];
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error_report("milkymist_sysctl: timer0: trying to write a "
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"value greater than the limit. Clipping.");
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}
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/* milkymist timer counts up */
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value = s->regs[R_TIMER0_COUNTER] - value;
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ptimer_set_count(s->ptimer0, value);
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break;
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case R_TIMER1_COUNTER:
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if (value > s->regs[R_TIMER1_COUNTER]) {
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value = s->regs[R_TIMER1_COUNTER];
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error_report("milkymist_sysctl: timer1: trying to write a "
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"value greater than the limit. Clipping.");
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}
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/* milkymist timer counts up */
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value = s->regs[R_TIMER1_COUNTER] - value;
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ptimer_set_count(s->ptimer1, value);
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s->regs[addr] = value;
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break;
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case R_TIMER0_COMPARE:
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ptimer_set_limit(s->ptimer0, value, 0);
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@ -170,10 +154,12 @@ static void sysctl_write(void *opaque, target_phys_addr_t addr, uint32_t value)
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case R_TIMER0_CONTROL:
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s->regs[addr] = value;
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if (s->regs[R_TIMER0_CONTROL] & CTRL_ENABLE) {
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trace_milkymist_sysctl_start_timer1();
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trace_milkymist_sysctl_start_timer0();
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ptimer_set_count(s->ptimer0,
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s->regs[R_TIMER0_COMPARE] - s->regs[R_TIMER0_COUNTER]);
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ptimer_run(s->ptimer0, 0);
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} else {
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trace_milkymist_sysctl_stop_timer1();
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trace_milkymist_sysctl_stop_timer0();
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ptimer_stop(s->ptimer0);
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}
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break;
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@ -181,6 +167,8 @@ static void sysctl_write(void *opaque, target_phys_addr_t addr, uint32_t value)
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s->regs[addr] = value;
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if (s->regs[R_TIMER1_CONTROL] & CTRL_ENABLE) {
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trace_milkymist_sysctl_start_timer1();
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ptimer_set_count(s->ptimer1,
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s->regs[R_TIMER1_COMPARE] - s->regs[R_TIMER1_COUNTER]);
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ptimer_run(s->ptimer1, 0);
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} else {
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trace_milkymist_sysctl_stop_timer1();
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