feat(xilinx): add new state to identify cpu power down
Currently there is only 1 state for CPU idle which is used while CPU
power down from Linux CPU idle feature. But CPU power down when firmware
send CPU power down request needs new state in self suspend to
distinguish in firmware for CPU power down from power down request or CPU
power down from Linux CPU idle. So add new state PM_STATE_CPU_OFF to
indicate CPU power down from power down request from firmware.
PM_STATE_CPU_OFF state is supported from self-suspend version 3. So
added feature check which sends new state in case of new firmware and
old state i.e. PM_STATE_CPU_IDLE in case of old firmware.
Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: I4118e1b813e5f76fca7b7e9ca1cc598715203fb0
diff --git a/plat/xilinx/versal_net/plat_psci_pm.c b/plat/xilinx/versal_net/plat_psci_pm.c
index 2cf3bf2..94cb7f5 100644
--- a/plat/xilinx/versal_net/plat_psci_pm.c
+++ b/plat/xilinx/versal_net/plat_psci_pm.c
@@ -59,6 +59,7 @@
*/
static void versal_net_pwr_domain_off(const psci_power_state_t *target_state)
{
+ uint32_t ret, fw_api_version, version[PAYLOAD_ARG_CNT] = {0U};
uint32_t cpu_id = plat_my_core_pos();
const struct pm_proc *proc = pm_get_proc(cpu_id);
@@ -78,8 +79,17 @@
* invoking CPU_on function, during which resume address will
* be set.
*/
- pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_IDLE, 0,
- SECURE_FLAG);
+ ret = pm_feature_check((uint32_t)PM_SELF_SUSPEND, &version[0], SECURE_FLAG);
+ if (ret == PM_RET_SUCCESS) {
+ fw_api_version = version[0] & 0xFFFFU;
+ if (fw_api_version >= 3U) {
+ (void)pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_OFF, 0,
+ SECURE_FLAG);
+ } else {
+ (void)pm_self_suspend(proc->node_id, MAX_LATENCY, PM_STATE_CPU_IDLE, 0,
+ SECURE_FLAG);
+ }
+ }
}
/**