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Commit f12b2d3f authored by Yue Ma's avatar Yue Ma
Browse files

cnss2: Expose PCIe DRV connection status 



Interface change to expose PCIe DRV connection status to WLAN
driver so that it is able to suspend/resume based on the status.

Change-Id: If8f706b0eb38f209a5e322b112beb9a95babdcad
Signed-off-by: default avatarYue Ma <yuem@codeaurora.org>
parent d9f2f007

drivers/net/wireless/cnss2/pci.c

+11 −0
Original line number Diff line number Diff line
@@ -727,6 +727,17 @@ int cnss_pci_dev_ramdump(struct cnss_pci_data *pci_priv) 
	return ret;

}



int cnss_pci_is_drv_connected(struct device *dev)

{

	struct cnss_pci_data *pci_priv = cnss_get_pci_priv(to_pci_dev(dev));



	if (!pci_priv)

		return -ENODEV;



	return pci_priv->drv_connected_last;

}

EXPORT_SYMBOL(cnss_pci_is_drv_connected);



int cnss_wlan_register_driver(struct cnss_wlan_driver *driver_ops)

{

	int ret = 0;

drivers/net/wireless/cnss2/pci.h

+2 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.

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

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -70,6 +70,7 @@ struct cnss_pci_data { 
	struct pci_saved_state *default_state;

	struct msm_pcie_register_event msm_pci_event;

	atomic_t auto_suspended;

	u8 drv_connected_last;

	bool monitor_wake_intr;

	struct dma_iommu_mapping *smmu_mapping;

	dma_addr_t smmu_iova_start;

include/net/cnss2.h

+1 −0
Original line number Diff line number Diff line
@@ -218,6 +218,7 @@ extern void cnss_lock_pm_sem(struct device *dev); 
extern void cnss_release_pm_sem(struct device *dev);

extern int cnss_auto_suspend(struct device *dev);

extern int cnss_auto_resume(struct device *dev);

extern int cnss_pci_is_drv_connected(struct device *dev);

extern int cnss_pci_force_wake_request(struct device *dev);

extern int cnss_pci_is_device_awake(struct device *dev);

extern int cnss_pci_force_wake_release(struct device *dev);