Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 721e25a0 authored by Rajasekaran Kalidoss's avatar Rajasekaran Kalidoss
Browse files

cnss2: Provide sysfs control for vdd-wlan-en 



For qcn7605 USB, firmware download and error
recovery are handled by entities in userspace.
cnss needs to provide access vdd-wlan-en to
the kickstart userspace via sysfs

Change-Id: I53da7f2f7ebb2ec55f98fc328a550181dccb5a18
Signed-off-by: default avatarRajasekaran Kalidoss <rkalidos@codeaurora.org>
parent 5ac71711

drivers/net/wireless/cnss2/main.c

+54 −2
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
@@ -1652,6 +1652,30 @@ static ssize_t cnss_fs_ready_store(struct device *dev, 


static DEVICE_ATTR(fs_ready, 0220, NULL, cnss_fs_ready_store);



static ssize_t cnss_wl_pwr_on(struct device *dev,

			      struct device_attribute *attr,

			      const char *buf,

			      size_t count)

{

	int pwr_state = 0;

	struct cnss_plat_data *plat_priv = dev_get_drvdata(dev);



	if (sscanf(buf, "%du", &pwr_state) != 1)

		return -EINVAL;



	cnss_pr_dbg("vreg-wlan-en state change %d, count %zu", pwr_state,

		    count);



	if (pwr_state)

		cnss_power_on_device(plat_priv);

	else

		cnss_power_off_device(plat_priv);



	return count;

}



static DEVICE_ATTR(wl_pwr_on, 0220, NULL, cnss_wl_pwr_on);



static int cnss_create_sysfs(struct cnss_plat_data *plat_priv)

{

	int ret = 0;
@@ -1672,6 +1696,27 @@ static void cnss_remove_sysfs(struct cnss_plat_data *plat_priv) 
	device_remove_file(&plat_priv->plat_dev->dev, &dev_attr_fs_ready);

}



static int cnss_create_sysfs_wl_pwr(struct cnss_plat_data *plat_priv)

{

	int ret = 0;



	ret = device_create_file(&plat_priv->plat_dev->dev,

				 &dev_attr_wl_pwr_on);

	if (ret) {

		cnss_pr_err("Failed to create device file, err = %d\n", ret);

		goto out;

	}

	cnss_pr_dbg("created sysfs for vreg-wlan-en control\n");

	return 0;

out:

	return ret;

}



static void cnss_remove_sysfs_wl_pwr(struct cnss_plat_data *plat_priv)

{

	device_remove_file(&plat_priv->plat_dev->dev, &dev_attr_wl_pwr_on);

}



static int cnss_event_work_init(struct cnss_plat_data *plat_priv)

{

	spin_lock_init(&plat_priv->event_lock);
@@ -1742,6 +1787,7 @@ static int cnss_probe(struct platform_device *plat_dev) 
	plat_priv->plat_dev = plat_dev;

	plat_priv->device_id = device_id->driver_data;

	plat_priv->bus_type = cnss_get_bus_type(plat_priv->device_id);

	cnss_pr_dbg("bus type selected  %d\n", plat_priv->bus_type);

	cnss_set_plat_priv(plat_dev, plat_priv);

	platform_set_drvdata(plat_dev, plat_priv);
@@ -1771,10 +1817,14 @@ static int cnss_probe(struct platform_device *plat_dev) 
	if (ret)

		goto unreg_bus_scale;



	ret = cnss_event_work_init(plat_priv);

	ret = cnss_create_sysfs_wl_pwr(plat_priv);

	if (ret)

		goto remove_sysfs;



	ret = cnss_event_work_init(plat_priv);

	if (ret)

		goto remove_sysfs_pwr;



	ret = cnss_qmi_init(plat_priv);

	if (ret)

		goto deinit_event_work;
@@ -1806,6 +1856,8 @@ deinit_event_work: 
	cnss_event_work_deinit(plat_priv);

remove_sysfs:

	cnss_remove_sysfs(plat_priv);

remove_sysfs_pwr:

	cnss_remove_sysfs_wl_pwr(plat_priv);

unreg_bus_scale:

	cnss_unregister_bus_scale(plat_priv);

unreg_esoc: