void tcu_timer_handler(void)
{
int ctrlbit = 1 << (tcu_channel);
if(tcu_readl(TCU_TFR) & ctrlbit) {
/* CLEAR INT */
tcu_writel(TCU_TFCR,ctrlbit);
tcu_timer_mod(ms_to_count(TCU_TIMER_MS));
}
}
static void reset_timer(int count)
{
unsigned int tcsr = tcu_readl(CH_TCSR(tcu_channel));
/* set count */
tcu_writel(CH_TDFR(tcu_channel),count);
tcu_writel(CH_TDHR(tcu_channel),count/2);
tcu_writel(TCU_TMCR , (1 << tcu_channel));
start_timer();
}
static void tcu_dump_reg_hex(void)
{
TCSM_PCHAR('G');
serial_put_hex(tcu_readl(CH_TCSR(tcu_channel)));
serial_put_hex(tcu_readl(CH_TCNT(tcu_channel)));
serial_put_hex(tcu_readl(TCU_TER));
serial_put_hex(tcu_readl(TCU_TFR));
serial_put_hex(tcu_readl(TCU_TMR));
serial_put_hex(tcu_readl(TCU_TSR));
serial_put_hex(tcu_readl(TCU_TSTR));
TCSM_PCHAR('H');
}
static void tcu_dump_reg(void)
{
printk("TCU_TCSR:%08x\n", tcu_readl(CH_TCSR(tcu_channel)));
printk("TCU_TCNT:%08x\n", tcu_readl(CH_TCNT(tcu_channel)));
printk("TCU_TER:%08x\n", tcu_readl(TCU_TER));
printk("TCU_TFR:%08x\n", tcu_readl(TCU_TFR));
printk("TCU_TMR:%08x\n", tcu_readl(TCU_TMR));
printk("TCU_TSR:%08x\n", tcu_readl(TCU_TSR));
printk("TCU_TSTR:%08x\n", tcu_readl(TCU_TSTR));
}
static irqreturn_t jz_timer_interrupt(int irq, void *dev_id)
{
struct jz_timerevent *evt_dev = dev_id;
int ctrlbit = 1 << (CLKEVENT_CH);
if(tcu_readl(TCU_TFR) & ctrlbit) {
tcu_writel(TCU_TFCR,ctrlbit);
if(evt_dev->curmode == CLOCK_EVT_MODE_ONESHOT) {
stoptimer();
}
evt_dev->clkevt.event_handler(&evt_dev->clkevt);
}
return IRQ_HANDLED;
}
static irqreturn_t jz_cpu1timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *cd = dev_id;
// int cpu=smp_processor_id();
if(tcu_readl(TCU_TFR) & (1 << OST_TIMER_BIT)) {
tcu_writel(TCU_TFCR, (1 << OST_TIMER_BIT));
if(curmode == CLOCK_EVT_MODE_ONESHOT) {
tcu_writel(TCU_TECR, (1 << OST_TIMER_BIT));
tcu_writel(TCU_TMSR, (1 << OST_TIMER_BIT));
}
}
cd->event_handler(cd);
return IRQ_HANDLED;
}
/* @fn: mod timer.
* @timer_cnt: cnt to be written to register.
* */
unsigned int tcu_timer_mod(unsigned long timer_cnt)
{
int count;
int current_count;
count = timer_cnt;
current_count = tcu_readl(CH_TCNT(tcu_channel));
tcu_writel(CH_TCNT(tcu_channel), 0);
tcu_writel(TCU_TSCR , (1 << tcu_channel));
tcu_writel(TCU_TECR,(1 << tcu_channel));
reset_timer(count);
#ifdef CONFIG_SLEEP_DEBUG
if(time >= TIME_1S) {
time = 0;
TCSM_PCHAR('.');
}
time += TCU_TIMER_MS;
#endif
return current_count;
}
static inline void tcu_save(void)
{
save_tcsr = tcu_readl(CH_TCSR(tcu_channel));
}
static uint64_t get_timer64(void)
{
uint32_t low = tcu_readl(TCU_OSTCNTL);
uint32_t high = tcu_readl(TCU_OSTCNTHBUF);
return ((uint64_t)high << 32) | low;
}