Tegra186: support for the latest platform port handlers

This patch adds support for the newer platform handler functions. Commit
I6db74b020b141048b6b8c03e1bef7ed8f72fd75b merges the upstream code which
has already moved all the upstream supported platforms over to these
handler functions.

Change-Id: I621eff038f3c0dc1b90793edcd4dd7c71b196045
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

plat/nvidia/tegra/include/t186/tegra_def.h

 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -37,7 +37,7 @@
  * This value is used by the PSCI implementation during the `SYSTEM_SUSPEND`
  * call as the `state-id` field in the 'power state' parameter.
  ******************************************************************************/
-#define PLAT_SYS_SUSPEND_STATE_ID	0
+#define PSTATE_ID_SOC_POWERDN		1
 
 /*******************************************************************************
  * Implementation defined ACTLR_EL3 bit definitions

plat/nvidia/tegra/soc/t186/plat_psci_handlers.c

 /*
- * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -40,22 +40,28 @@
 #include <t18x_ari.h>
 #include <tegra_private.h>
 
-int32_t tegra_soc_validate_power_state(unsigned int power_state)
+int32_t tegra_soc_validate_power_state(unsigned int power_state,
+					psci_power_state_t *req_state)
 {
+	int pwr_lvl = psci_get_pstate_pwrlvl(power_state);
+
 	/* Sanity check the requested afflvl */
 	if (psci_get_pstate_type(power_state) == PSTATE_TYPE_STANDBY) {
 		/*
 		 * It's possible to enter standby only on affinity level 0 i.e.
 		 * a cpu on Tegra. Ignore any other affinity level.
 		 */
-		if (psci_get_pstate_afflvl(power_state) != MPIDR_AFFLVL0)
+		if (pwr_lvl != MPIDR_AFFLVL0)
 			return PSCI_E_INVALID_PARAMS;
+
+		/* power domain in standby state */
+		req_state->pwr_domain_state[pwr_lvl] = PLAT_MAX_RET_STATE;
 	}
 
 	return PSCI_E_SUCCESS;
 }
 
-int tegra_soc_prepare_cpu_on(unsigned long mpidr)
+int tegra_soc_pwr_domain_on(u_register_t mpidr)
 {
 	int target_cpu = mpidr & MPIDR_CPU_MASK;
 	int target_cluster = (mpidr & MPIDR_CLUSTER_MASK) >>
@@ -74,23 +80,7 @@ int tegra_soc_prepare_cpu_on(unsigned long mpidr)
 	return PSCI_E_SUCCESS;
 }
 
-int tegra_soc_prepare_cpu_on_finish(unsigned long mpidr)
-{
-	/*
-	 * Check if we are exiting from SOC_POWERDN.
-	 */
-	if (tegra_system_suspended()) {
-
-		/*
-		 * System resume complete.
-		 */
-		tegra_pm_system_suspend_exit();
-	}
-
-	return PSCI_E_SUCCESS;
-}
-
-int tegra_soc_prepare_cpu_off(unsigned long mpidr)
+int tegra_soc_pwr_domain_off(const psci_power_state_t *target_state)
 {
 	cpu_context_t *ctx = cm_get_context(NON_SECURE);
 	gp_regs_t *gp_regs = get_gpregs_ctx(ctx);

plat/nvidia/tegra/soc/t186/plat_setup.c

@@ -32,6 +32,23 @@
 #include <tegra_def.h>
 #include <xlat_tables.h>
 
+/*******************************************************************************
+ * The Tegra power domain tree has a single system level power domain i.e. a
+ * single root node. The first entry in the power domain descriptor specifies
+ * the number of power domains at the highest power level.
+ *******************************************************************************
+ */
+const unsigned char tegra_power_domain_tree_desc[] = {
+	/* No of root nodes */
+	1,
+	/* No of clusters */
+	PLATFORM_CLUSTER_COUNT,
+	/* No of CPU cores - cluster0 */
+	PLATFORM_MAX_CPUS_PER_CLUSTER,
+	/* No of CPU cores - cluster1 */
+	PLATFORM_MAX_CPUS_PER_CLUSTER
+};
+
 /*
  * Table of regions to map using the MMU.
  */