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clocksource/drivers/timer-microchip-pit64b: Add delay timer

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Add delay timer.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230203130537.1921608-3-claudiu.beznea@microchip.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Claudiu Beznea 2023-02-03 15:05:37 +02:00 committed by Daniel Lezcano
parent d19c8b2ed1
commit f3af3dc7cc
1 changed files with 12 additions and 0 deletions
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12
drivers/clocksource/timer-microchip-pit64b.c
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@ -9,6 +9,7 @@
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/clockchips.h> #include <linux/clockchips.h>
#include <linux/delay.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/of_address.h> #include <linux/of_address.h>
#include <linux/of_irq.h> #include <linux/of_irq.h>
@ -92,6 +93,8 @@ struct mchp_pit64b_clksrc {
static void __iomem *mchp_pit64b_cs_base; static void __iomem *mchp_pit64b_cs_base;
/* Default cycles for clockevent timer. */ /* Default cycles for clockevent timer. */
static u64 mchp_pit64b_ce_cycles; static u64 mchp_pit64b_ce_cycles;
/* Delay timer. */
static struct delay_timer mchp_pit64b_dt;
static inline u64 mchp_pit64b_cnt_read(void __iomem *base) static inline u64 mchp_pit64b_cnt_read(void __iomem *base)
{ {
@ -169,6 +172,11 @@ static u64 notrace mchp_pit64b_sched_read_clk(void)
return mchp_pit64b_cnt_read(mchp_pit64b_cs_base); return mchp_pit64b_cnt_read(mchp_pit64b_cs_base);
} }
static unsigned long notrace mchp_pit64b_dt_read(void)
{
return mchp_pit64b_cnt_read(mchp_pit64b_cs_base);
}
static int mchp_pit64b_clkevt_shutdown(struct clock_event_device *cedev) static int mchp_pit64b_clkevt_shutdown(struct clock_event_device *cedev)
{ {
struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev); struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev);
@ -376,6 +384,10 @@ static int __init mchp_pit64b_init_clksrc(struct mchp_pit64b_timer *timer,
sched_clock_register(mchp_pit64b_sched_read_clk, 64, clk_rate); sched_clock_register(mchp_pit64b_sched_read_clk, 64, clk_rate);
mchp_pit64b_dt.read_current_timer = mchp_pit64b_dt_read;
mchp_pit64b_dt.freq = clk_rate;
register_current_timer_delay(&mchp_pit64b_dt);
return 0; return 0;
} }