From cb95a19a61cb7a9ad30d7c5b4b9a6c8dbd6840a1 Mon Sep 17 00:00:00 2001
From: Varun Wadekar <vwadekar@nvidia.com>
Date: Wed, 5 Jul 2017 17:44:12 -0700
Subject: [PATCH] Tegra: implement the early suspend handler
This patch implements the early suspend handler for Tegra SoCs. This
handler is empty for now and the actual support for a particular platform
would be added later.
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
---
plat/nvidia/tegra/common/tegra_pm.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/plat/nvidia/tegra/common/tegra_pm.c b/plat/nvidia/tegra/common/tegra_pm.c
index 0c25934c3..86021ba94 100644
--- a/plat/nvidia/tegra/common/tegra_pm.c
+++ b/plat/nvidia/tegra/common/tegra_pm.c
@@ -36,6 +36,7 @@ uint8_t tegra_fake_system_suspend;
* The following platform setup functions are weakly defined. They
* provide typical implementations that will be overridden by a SoC.
*/
+#pragma weak tegra_soc_pwr_domain_suspend_pwrdown_early
#pragma weak tegra_soc_pwr_domain_suspend
#pragma weak tegra_soc_pwr_domain_on
#pragma weak tegra_soc_pwr_domain_off
@@ -45,6 +46,11 @@ uint8_t tegra_fake_system_suspend;
#pragma weak tegra_soc_prepare_system_off
#pragma weak tegra_soc_get_target_pwr_state
+int tegra_soc_pwr_domain_suspend_pwrdown_early(const psci_power_state_t *target_state)
+{
+ return PSCI_E_NOT_SUPPORTED;
+}
+
int tegra_soc_pwr_domain_suspend(const psci_power_state_t *target_state)
{
return PSCI_E_NOT_SUPPORTED;
@@ -142,6 +148,17 @@ void tegra_pwr_domain_off(const psci_power_state_t *target_state)
tegra_soc_pwr_domain_off(target_state);
}
+/*******************************************************************************
+ * Handler called when a power domain is about to be suspended. The
+ * target_state encodes the power state that each level should transition to.
+ * This handler is called with SMP and data cache enabled, when
+ * HW_ASSISTED_COHERENCY = 0
+ ******************************************************************************/
+void tegra_pwr_domain_suspend_pwrdown_early(const psci_power_state_t *target_state)
+{
+ tegra_soc_pwr_domain_suspend_pwrdown_early(target_state);
+}
+
/*******************************************************************************
* Handler called when a power domain is about to be suspended. The
* target_state encodes the power state that each level should transition to.
@@ -315,6 +332,7 @@ static const 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,
+ .pwr_domain_suspend_pwrdown_early = tegra_pwr_domain_suspend_pwrdown_early,
.pwr_domain_suspend = tegra_pwr_domain_suspend,
.pwr_domain_on_finish = tegra_pwr_domain_on_finish,
.pwr_domain_suspend_finish = tegra_pwr_domain_suspend_finish,
--
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