xilinx: versal: Add set wakeup source API

Implement set wakeup source API to pass SMC
call for set wakeup source to PLM (Platform Loader
and Manager).
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: I654ce07235c0fc7dfcb81bf98820153255f61537

plat/xilinx/versal/pm_service/pm_api_sys.c

@@ -694,3 +694,21 @@ enum pm_ret_status pm_api_ioctl(uint32_t device_id, uint32_t ioctl_id,
 		return pm_ipi_send_sync(primary_proc, payload, value, 1);
 	}
 }
+
+/**
+ * pm_set_wakeup_source() - PM call to specify the wakeup source while suspended
+ * @target	Device id of the targeted PU or subsystem
+ * @wkup_node	Device id of the wakeup peripheral
+ * @enable	Enable or disable the specified peripheral as wake source
+ *
+ * @return	Returns status, either success or error+reason
+ */
+enum pm_ret_status pm_set_wakeup_source(uint32_t target, uint32_t wkup_device,
+					uint8_t enable)
+{
+	uint32_t payload[PAYLOAD_ARG_CNT];
+
+	PM_PACK_PAYLOAD4(payload, LIBPM_MODULE_ID, PM_SET_WAKEUP_SOURCE, target,
+			 wkup_device, enable);
+	return pm_ipi_send(primary_proc, payload);
+}

plat/xilinx/versal/pm_service/pm_api_sys.h

@@ -26,6 +26,8 @@ enum pm_ret_status pm_req_suspend(uint32_t target,
 				  unsigned int state);
 enum pm_ret_status pm_req_wakeup(uint32_t target, uint32_t set_address,
 				 uintptr_t address, uint8_t ack);
+enum pm_ret_status pm_set_wakeup_source(uint32_t target, uint32_t device_id,
+					uint8_t enable);
 enum pm_ret_status pm_request_device(uint32_t device_id, uint32_t capabilities,
 				     uint32_t qos, uint32_t ack);
 enum pm_ret_status pm_release_device(uint32_t device_id);

plat/xilinx/versal/pm_service/pm_defs.h

@@ -30,6 +30,7 @@
 #define PM_FORCE_POWERDOWN		8U
 #define PM_ABORT_SUSPEND		9U
 #define PM_REQ_WAKEUP			10U
+#define PM_SET_WAKEUP_SOURCE		11U
 #define PM_SYSTEM_SHUTDOWN		12U
 #define PM_REQUEST_DEVICE		13U
 #define PM_RELEASE_DEVICE		14U

plat/xilinx/versal/pm_service/pm_svc_main.c

@@ -111,6 +111,10 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 		ret = pm_req_wakeup(pm_arg[0], pm_arg[1], pm_arg[2], pm_arg[3]);
 		SMC_RET1(handle, (uint64_t)ret);
 
+	case PM_SET_WAKEUP_SOURCE:
+		ret = pm_set_wakeup_source(pm_arg[0], pm_arg[1], pm_arg[2]);
+		SMC_RET1(handle, (uint64_t)ret);
+
 	case PM_REQUEST_DEVICE:
 		ret = pm_request_device(pm_arg[0], pm_arg[1], pm_arg[2],
 					pm_arg[3]);