Tegra: handler to check support for System Suspend
Tegra210 SoCs need the sc7entry-fw to enter System Suspend mode,
but there might be certain boards that do not have this firmware
blob. To stop the NS world from issuing System suspend entry
commands on such devices, we ned to disable System Suspend from
the PSCI "features".
This patch removes the System suspend handler from the Tegra PSCI
ops, so that the framework will disable support for "System Suspend"
from the PSCI "features".
Original change by: kalyani chidambaram <kalyanic@nvidia.com>
Change-Id: Ie029f82f55990a8b3a6debb73e95e0e218bfd1f5
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/common/tegra_pm.c b/plat/nvidia/tegra/common/tegra_pm.c
index 1f59f30..5ec6f84 100644
--- a/plat/nvidia/tegra/common/tegra_pm.c
+++ b/plat/nvidia/tegra/common/tegra_pm.c
@@ -259,7 +259,7 @@
/*******************************************************************************
* Export the platform handlers to enable psci to invoke them
******************************************************************************/
-static const plat_psci_ops_t tegra_plat_psci_ops = {
+static plat_psci_ops_t tegra_plat_psci_ops = {
.cpu_standby = tegra_cpu_standby,
.pwr_domain_on = tegra_pwr_domain_on,
.pwr_domain_off = tegra_pwr_domain_off,
@@ -296,6 +296,14 @@
(void)tegra_soc_pwr_domain_on_finish(&target_state);
/*
+ * Disable System Suspend if the platform does not
+ * support it
+ */
+ if (!plat_supports_system_suspend()) {
+ tegra_plat_psci_ops.get_sys_suspend_power_state = NULL;
+ }
+
+ /*
* Initialize PSCI ops struct
*/
*psci_ops = &tegra_plat_psci_ops;