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intel_adsp/cavs: power: Fix INTLEVEL value

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In pm_state_set we can't just call k_cpu_idle() because
this will clear out PS.INTLEVEL. Use k_cpu_atomic_idle instead
since Zephyr's expect interruptions to be locked after pm_state_set.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2024-01-20 00:36:59 +00:00 • committed by Maureen Helm
commit 3e5a593de9
1 changed files with 7 additions and 1 deletions
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8
soc/xtensa/intel_adsp/cavs/power.c
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@ -163,7 +163,7 @@ void pm_state_set(enum pm_state state, uint8_t substate_id)
/* do power down - this function won't return */
power_down_cavs(true, uncache_to_cache(&hpsram_mask[0]));
} else {
k_cpu_idle();
k_cpu_atomic_idle(arch_irq_lock());
}
} else {
__ASSERT(false, "invalid argument - unsupported power state");
@ -183,6 +183,12 @@ void pm_state_exit_post_ops(enum pm_state state, uint8_t substate_id)
} else {
__ASSERT(false, "invalid argument - unsupported power state");
}
/**
* We don't have the key used to lock interruptions here.
* Just set PS.INTLEVEL to 0.
*/
__asm__ volatile ("rsil a2, 0");
}
#endif /* CONFIG_PM */