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clocksource/drivers/imx-tpm: Add support for ARM64 

Allows building and compile-testing the i.MX TPM driver also
for ARM64. The delay_timer is only supported on ARMv7.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/1585715222-24489-1-git-send-email-Anson.Huang@nxp.com
5.9.x+fslc
Anson Huang 2020-04-01 12:27:02 +08:00 committed by Daniel Lezcano
parent 4855f2bd91
commit ac161f57b6
1 changed files with 6 additions and 2 deletions
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8
drivers/clocksource/timer-imx-tpm.c
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@ -61,17 +61,19 @@ static inline void tpm_irq_acknowledge(void)
writel(TPM_STATUS_CH0F, timer_base + TPM_STATUS);
}
static struct delay_timer tpm_delay_timer;
static inline unsigned long tpm_read_counter(void)
{
return readl(timer_base + TPM_CNT);
}
#if defined(CONFIG_ARM)
static struct delay_timer tpm_delay_timer;
static unsigned long tpm_read_current_timer(void)
{
return tpm_read_counter();
}
#endif
static u64 notrace tpm_read_sched_clock(void)
{
@ -144,9 +146,11 @@ static struct timer_of to_tpm = {
static int __init tpm_clocksource_init(void)
{
#if defined(CONFIG_ARM)
tpm_delay_timer.read_current_timer = &tpm_read_current_timer;
tpm_delay_timer.freq = timer_of_rate(&to_tpm) >> 3;
register_current_timer_delay(&tpm_delay_timer);
#endif
sched_clock_register(tpm_read_sched_clock, counter_width,
timer_of_rate(&to_tpm) >> 3);