qcacld-3.0: pmo: Add API to get target suspend state

In USB devices even if the driver returns an error from bus_suspend,
still the kernel/platform goes into suspend as any error from USB
bus_suspend is ignored.
During suspend, if WoW or suspend was NACked by FW, we should not
send WMI_WOW_HOSTWAKEUP_FROM_SLEEP_CMDID, WMI_PDEV_RESUME_CMDID to disable
WoW or resume device (in the next system resume)
Add new PMO API to get target suspend state and use it to check if
device should be resumed.

Change-Id: Ic6be05f4f2d36ffe174774b6cd55c6da6b1ea1b8
CRs-Fixed: 2421591

components/pmo/core/src/wlan_pmo_suspend_resume.c

@@ -1206,6 +1206,12 @@ QDF_STATUS pmo_core_psoc_bus_resume_req(struct wlan_objmgr_psoc *psoc,
 
 	pmo_core_update_wow_initial_wake_up(psoc_ctx, false);
 
+	/* If target was not suspended, bail out */
+	if (!pmo_tgt_is_target_suspended(psoc)) {
+		pmo_psoc_put_ref(psoc);
+		goto out;
+	}
+
 	if (wow_mode)
 		status = pmo_core_psoc_disable_wow_in_fw(psoc, psoc_ctx);
 	else

components/pmo/dispatcher/inc/wlan_pmo_obj_mgmt_public_struct.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -207,6 +207,7 @@ struct wlan_pmo_tx_ops {
 			struct wlan_objmgr_psoc *psoc);
 	void (*update_target_suspend_flag)(
 		struct wlan_objmgr_psoc *psoc, uint8_t value);
+	bool (*is_target_suspended)(struct wlan_objmgr_psoc *psoc);
 	QDF_STATUS (*psoc_send_wow_enable_req)(struct wlan_objmgr_psoc *psoc,
 		struct pmo_wow_cmd_params *param);
 	QDF_STATUS (*psoc_send_supend_req)(struct wlan_objmgr_psoc *psoc,

components/pmo/dispatcher/inc/wlan_pmo_tgt_api.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -382,6 +382,14 @@ int pmo_tgt_psoc_get_pending_cmnds(struct wlan_objmgr_psoc *psoc);
 void pmo_tgt_update_target_suspend_flag(struct wlan_objmgr_psoc *psoc,
 		uint8_t val);
 
+/**
+ * pmo_tgt_is_target_suspended() - Get WMI target Suspend flag
+ * @psoc: objmgr psoc
+ *
+ * Return: true if target suspended, false otherwise.
+ */
+bool pmo_tgt_is_target_suspended(struct wlan_objmgr_psoc *psoc);
+
 /**
  * pmo_tgt_psoc_send_wow_enable_req() -Send wow enable request
  * @psoc: objmgr psoc

components/pmo/dispatcher/src/wlan_pmo_tgt_suspend_resume.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -131,6 +131,18 @@ void pmo_tgt_update_target_suspend_flag(struct wlan_objmgr_psoc *psoc,
 	pmo_tx_ops.update_target_suspend_flag(psoc, val);
 }
 
+bool pmo_tgt_is_target_suspended(struct wlan_objmgr_psoc *psoc)
+{
+	struct wlan_pmo_tx_ops pmo_tx_ops;
+
+	pmo_tx_ops = GET_PMO_TX_OPS_FROM_PSOC(psoc);
+	if (!pmo_tx_ops.is_target_suspended) {
+		pmo_err("is_target_suspended is null");
+		return false;
+	}
+	return pmo_tx_ops.is_target_suspended(psoc);
+}
+
 QDF_STATUS pmo_tgt_psoc_send_wow_enable_req(struct wlan_objmgr_psoc *psoc,
 	struct pmo_wow_cmd_params *param)
 {

components/target_if/pmo/inc/target_if_pmo.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -387,6 +387,14 @@ int target_if_pmo_psoc_get_pending_cmnds(struct wlan_objmgr_psoc *psoc);
 void target_if_pmo_update_target_suspend_flag(struct wlan_objmgr_psoc *psoc,
 		uint8_t value);
 
+/**
+ * target_if_pmo_is_target_suspended() - get wmi target suspend flag
+ * @psoc: objmgr psoc
+ *
+ * Return: true if target suspended, false otherwise
+ */
+bool target_if_pmo_is_target_suspended(struct wlan_objmgr_psoc *psoc);
+
 /**
  * target_if_pmo_psoc_send_wow_enable_req() -send wow enable request
  * @psoc: objmgr psoc

components/target_if/pmo/src/target_if_pmo_main.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -103,6 +103,8 @@ void target_if_pmo_register_tx_ops(struct wlan_pmo_tx_ops *pmo_tx_ops)
 		target_if_pmo_psoc_get_pending_cmnds;
 	pmo_tx_ops->update_target_suspend_flag =
 		target_if_pmo_update_target_suspend_flag;
+	pmo_tx_ops->is_target_suspended =
+		target_if_pmo_is_target_suspended;
 	pmo_tx_ops->psoc_send_wow_enable_req =
 		target_if_pmo_psoc_send_wow_enable_req;
 	pmo_tx_ops->psoc_send_supend_req =

components/target_if/pmo/src/target_if_pmo_suspend_resume.c

@@ -187,6 +187,19 @@ void target_if_pmo_update_target_suspend_flag(struct wlan_objmgr_psoc *psoc,
 	wmi_set_target_suspend(wmi_handle, value);
 }
 
+bool target_if_pmo_is_target_suspended(struct wlan_objmgr_psoc *psoc)
+{
+	wmi_unified_t wmi_handle;
+
+	wmi_handle = get_wmi_unified_hdl_from_psoc(psoc);
+	if (!wmi_handle) {
+		target_if_err("Invalid wmi handle");
+		return false;
+	}
+
+	return wmi_is_target_suspended(wmi_handle);
+}
+
 QDF_STATUS target_if_pmo_psoc_send_wow_enable_req(
 		struct wlan_objmgr_psoc *psoc,
 		struct pmo_wow_cmd_params *param)