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Commit cad2f807 authored by Maulik Shah's avatar Maulik Shah
Browse files

cpuidle: lpm-levels: Add Support for PSCI on 32bit 



The lpm-levels will work with PSCI specification using the OS initiated
scheme. The lpm-levels driver would determine the last man standing and
vote into TZ accordingly.

Change-Id: I65ff03a3b68e3a197dba7653caea271298bf1475
Signed-off-by: default avatarMaulik Shah <mkshah@codeaurora.org>
parent 31653389

drivers/cpuidle/lpm-levels.c

+19 −1
Original line number Diff line number Diff line
@@ -810,10 +810,28 @@ bool psci_enter_sleep(struct lpm_cluster *cluster, int idx, bool from_idle) 
		return success;

	}

}

#elif defined(CONFIG_ARM_PSCI)

bool psci_enter_sleep(struct lpm_cluster *cluster, int idx, bool from_idle)

{

	int affinity_level = 0;

	int state_id = get_cluster_id(cluster, &affinity_level);

	int power_state = PSCI_POWER_STATE(cluster->cpu->levels[idx].is_reset);



	affinity_level = PSCI_AFFINITY_LEVEL(affinity_level);

	if (!idx) {

		wfi();

		return 1;

	}



	state_id |= (power_state | affinity_level

				| cluster->cpu->levels[idx].psci_id);



	return !cpu_suspend(state_id);

}

#else

bool psci_enter_sleep(struct lpm_cluster *cluster, int idx, bool from_idle)

{

	WARN_ONCE(true, "PSCI cpu_suspend ops not supported on V7\n");

	WARN_ONCE(true, "PSCI cpu_suspend ops not supported\n");

	return false;

}

#endif