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Commit 689771bf authored by Yue Ma's avatar Yue Ma
Browse files

cnss2: Expose APIs to prevent and allow PCIe L1 state 



WLAN driver can use the APIs to control if PCIe can enter L1 and
L1ss states.

Change-Id: Iad784b1ca66199ad61c471635a67542afd34480e
Signed-off-by: default avatarYue Ma <yuem@codeaurora.org>
parent a2d6c83b

drivers/net/wireless/cnss2/pci.c

+16 −0
Original line number Original line Diff line number Diff line
@@ -764,6 +764,22 @@ int cnss_resume_pci_link(struct cnss_pci_data *pci_priv) 
	return ret;

	return ret;

}

}





int cnss_pci_prevent_l1(struct device *dev)

{

	struct pci_dev *pci_dev = to_pci_dev(dev);



	return msm_pcie_prevent_l1(pci_dev);

}

EXPORT_SYMBOL(cnss_pci_prevent_l1);



void cnss_pci_allow_l1(struct device *dev)

{

	struct pci_dev *pci_dev = to_pci_dev(dev);



	msm_pcie_allow_l1(pci_dev);

}

EXPORT_SYMBOL(cnss_pci_allow_l1);



int cnss_pci_link_down(struct device *dev)

int cnss_pci_link_down(struct device *dev)

{

{

	unsigned long flags;

	unsigned long flags;

include/net/cnss2.h

+3 −1
Original line number Original line Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/* SPDX-License-Identifier: GPL-2.0-only */

/* Copyright (c) 2016-2019, The Linux Foundation. All rights reserved. */

/* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved. */





#ifndef _NET_CNSS2_H

#ifndef _NET_CNSS2_H

#define _NET_CNSS2_H

#define _NET_CNSS2_H
@@ -158,6 +158,8 @@ enum cnss_recovery_reason { 
extern int cnss_wlan_register_driver(struct cnss_wlan_driver *driver);

extern int cnss_wlan_register_driver(struct cnss_wlan_driver *driver);

extern void cnss_wlan_unregister_driver(struct cnss_wlan_driver *driver);

extern void cnss_wlan_unregister_driver(struct cnss_wlan_driver *driver);

extern void cnss_device_crashed(struct device *dev);

extern void cnss_device_crashed(struct device *dev);

extern int cnss_pci_prevent_l1(struct device *dev);

extern void cnss_pci_allow_l1(struct device *dev);

extern int cnss_pci_link_down(struct device *dev);

extern int cnss_pci_link_down(struct device *dev);

extern int cnss_pci_is_device_down(struct device *dev);

extern int cnss_pci_is_device_down(struct device *dev);

extern void cnss_schedule_recovery(struct device *dev,

extern void cnss_schedule_recovery(struct device *dev,