refactor(plat/synquacer): update PSCI system_off handling
SynQuacer SoC contains a Cortex-M3 System Control Processor(SCP)
which manages system power.
This commit modifies the PSCI system_off handling to call SCMI,
same as other PSCI calls. System power-off is done by turing off
the ATX power supply through GPIO, this operation is transferred
to SCP.
Note that this commit modifies only the SCMI case, obsolete SCPI
implementation is not updated.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Change-Id: I6c1009e67cccd1eb5d14c338c3df9103d63709dd
diff --git a/plat/socionext/synquacer/drivers/scp/sq_scmi.c b/plat/socionext/synquacer/drivers/scp/sq_scmi.c
index e2013cc..0e99256 100644
--- a/plat/socionext/synquacer/drivers/scp/sq_scmi.c
+++ b/plat/socionext/synquacer/drivers/scp/sq_scmi.c
@@ -189,6 +189,11 @@
/*
* Helper function to reset the system via SCMI.
*/
+void __dead2 sq_scmi_sys_shutdown(void)
+{
+ sq_scmi_system_off(SCMI_SYS_PWR_SHUTDOWN);
+}
+
void __dead2 sq_scmi_sys_reboot(void)
{
sq_scmi_system_off(SCMI_SYS_PWR_COLD_RESET);
diff --git a/plat/socionext/synquacer/include/sq_common.h b/plat/socionext/synquacer/include/sq_common.h
index a985822..b09d22a 100644
--- a/plat/socionext/synquacer/include/sq_common.h
+++ b/plat/socionext/synquacer/include/sq_common.h
@@ -45,6 +45,7 @@
/* SCMI API for power management by SCP */
void sq_scmi_off(const struct psci_power_state *target_state);
void sq_scmi_on(u_register_t mpidr);
+void __dead2 sq_scmi_sys_shutdown(void);
void __dead2 sq_scmi_sys_reboot(void);
void __dead2 sq_scmi_system_off(int state);
/* SCMI API for vendor specific protocol */
diff --git a/plat/socionext/synquacer/sq_psci.c b/plat/socionext/synquacer/sq_psci.c
index 4168df9..3062f63 100644
--- a/plat/socionext/synquacer/sq_psci.c
+++ b/plat/socionext/synquacer/sq_psci.c
@@ -113,6 +113,9 @@
void __dead2 sq_system_off(void)
{
+#if SQ_USE_SCMI_DRIVER
+ sq_scmi_sys_shutdown();
+#else
volatile uint32_t *gpio = (uint32_t *)PLAT_SQ_GPIO_BASE;
/* set PD[9] high to power off the system */
@@ -139,6 +142,7 @@
wfi();
ERROR("SQ System Off: operation not handled.\n");
panic();
+#endif
}
void __dead2 sq_system_reset(void)