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clocksource/drivers/fttmr010: Parametrise shutdown 

In preparation for supporting the ast2600 which uses a different method
to clear bits in the control register, use a callback for performing the
shutdown sequence.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20191107094218.13210-2-joel@jms.id.au
This commit is contained in:
Joel Stanley 2019-11-07 20:12:15 +10:30 коммит произвёл Daniel Lezcano
Родитель 5fb1c2a5bb
Коммит 84fb64c28a
1 изменённых файлов: 8 добавлений и 11 удалений
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19
drivers/clocksource/timer-fttmr010.c
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@ -97,6 +97,7 @@ struct fttmr010 {
bool is_aspeed;
u32 t1_enable_val;
struct clock_event_device clkevt;
int (*timer_shutdown)(struct clock_event_device *evt);
#ifdef CONFIG_ARM
struct delay_timer delay_timer;
#endif
@ -140,9 +141,7 @@ static int fttmr010_timer_set_next_event(unsigned long cycles,
u32 cr;
/* Stop */
cr = readl(fttmr010->base + TIMER_CR);
cr &= ~fttmr010->t1_enable_val;
writel(cr, fttmr010->base + TIMER_CR);
fttmr010->timer_shutdown(evt);
if (fttmr010->is_aspeed) {
/*
@ -183,9 +182,7 @@ static int fttmr010_timer_set_oneshot(struct clock_event_device *evt)
u32 cr;
/* Stop */
cr = readl(fttmr010->base + TIMER_CR);
cr &= ~fttmr010->t1_enable_val;
writel(cr, fttmr010->base + TIMER_CR);
fttmr010->timer_shutdown(evt);
/* Setup counter start from 0 or ~0 */
writel(0, fttmr010->base + TIMER1_COUNT);
@ -211,9 +208,7 @@ static int fttmr010_timer_set_periodic(struct clock_event_device *evt)
u32 cr;
/* Stop */
cr = readl(fttmr010->base + TIMER_CR);
cr &= ~fttmr010->t1_enable_val;
writel(cr, fttmr010->base + TIMER_CR);
fttmr010->timer_shutdown(evt);
/* Setup timer to fire at 1/HZ intervals. */
if (fttmr010->is_aspeed) {
@ -350,6 +345,8 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
fttmr010->tick_rate);
}
fttmr010->timer_shutdown = fttmr010_timer_shutdown;
/*
* Setup clockevent timer (interrupt-driven) on timer 1.
*/
@ -370,10 +367,10 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
fttmr010->clkevt.features = CLOCK_EVT_FEAT_PERIODIC |
CLOCK_EVT_FEAT_ONESHOT;
fttmr010->clkevt.set_next_event = fttmr010_timer_set_next_event;
fttmr010->clkevt.set_state_shutdown = fttmr010_timer_shutdown;
fttmr010->clkevt.set_state_shutdown = fttmr010->timer_shutdown;
fttmr010->clkevt.set_state_periodic = fttmr010_timer_set_periodic;
fttmr010->clkevt.set_state_oneshot = fttmr010_timer_set_oneshot;
fttmr010->clkevt.tick_resume = fttmr010_timer_shutdown;
fttmr010->clkevt.tick_resume = fttmr010->timer_shutdown;
fttmr010->clkevt.cpumask = cpumask_of(0);
fttmr010->clkevt.irq = irq;
clockevents_config_and_register(&fttmr010->clkevt,