/******************************************************************************
* This function finds the highest power level which will be powered down
* amongst all the power levels specified in the 'state_info' structure
*****************************************************************************/
unsigned int psci_find_max_off_lvl(const psci_power_state_t *state_info)
{
int i;
for (i = PLAT_MAX_PWR_LVL; i >= PSCI_CPU_PWR_LVL; i--) {
if (is_local_state_off(state_info->pwr_domain_state[i]))
return i;
}
return PSCI_INVALID_PWR_LVL;
}
/*
* This functions returns the index into the `psci_stat_t` array given the
* local power state and power domain level. If the platform implements the
* `get_pwr_lvl_state_idx` pm hook, then that will be used to return the index.
*/
static int get_stat_idx(plat_local_state_t local_state, int pwr_lvl)
{
int idx;
if (psci_plat_pm_ops->get_pwr_lvl_state_idx == NULL) {
assert(PLAT_MAX_PWR_LVL_STATES == 2);
if (is_local_state_retn(local_state))
return 0;
assert(is_local_state_off(local_state));
return 1;
}
idx = psci_plat_pm_ops->get_pwr_lvl_state_idx(local_state, pwr_lvl);
assert((idx >= 0) && (idx < PLAT_MAX_PWR_LVL_STATES));
return idx;
}