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

Commit 223d2092 authored by Yu Wang's avatar Yu Wang Committed by Gerrit - the friendly Code Review server
Browse files

cnss2: Add sysfs entry for system shutdown 



Add sysfs entry '/sys/kernel/shutdown_wlan/shutdown'.
When system is shutting down or rebooting, this entry will be
written so that drvier can be notified and handle it properly.

Change-Id: I2537a2893f8787ff7c9d33608ef6c42075c3d128
Signed-off-by: default avatarYu Wang <yyuwang@codeaurora.org>
Signed-off-by: default avatarYue Ma <yuem@codeaurora.org>
parent d7f72c76

drivers/net/wireless/cnss2/main.c

+63 −1
Original line number Diff line number Diff line
@@ -679,6 +679,13 @@ int cnss_idle_restart(struct device *dev) 
	timeout = cnss_get_boot_timeout(dev);



	reinit_completion(&plat_priv->power_up_complete);



	if (test_bit(CNSS_IN_REBOOT, &plat_priv->driver_state)) {

		cnss_pr_dbg("Reboot or shutdown is in progress, ignore idle restart\n");

		ret = -EINVAL;

		goto out;

	}



	ret = wait_for_completion_timeout(&plat_priv->power_up_complete,

					  msecs_to_jiffies(timeout) << 2);

	if (!ret) {
@@ -1949,6 +1956,23 @@ static void cnss_unregister_bus_scale(struct cnss_plat_data *plat_priv) 
		msm_bus_scale_unregister_client(bus_bw_info->bus_client);

}



static ssize_t shutdown_store(struct kobject *kobj,

			      struct kobj_attribute *attr,

			      const char *buf, size_t count)

{

	struct cnss_plat_data *plat_priv = cnss_get_plat_priv(NULL);



	if (plat_priv) {

		set_bit(CNSS_IN_REBOOT, &plat_priv->driver_state);

		del_timer(&plat_priv->fw_boot_timer);

		complete_all(&plat_priv->power_up_complete);

	}



	cnss_pr_dbg("Received shutdown notification\n");



	return count;

}



static ssize_t fs_ready_store(struct device *dev,

			      struct device_attribute *attr,

			      const char *buf, size_t count)
@@ -1992,18 +2016,55 @@ static ssize_t fs_ready_store(struct device *dev, 
	return count;

}



static struct kobj_attribute shutdown_attribute = __ATTR_WO(shutdown);

static DEVICE_ATTR_WO(fs_ready);



static int cnss_create_shutdown_sysfs(struct cnss_plat_data *plat_priv)

{

	int ret = 0;



	plat_priv->shutdown_kobj = kobject_create_and_add("shutdown_wlan",

							  kernel_kobj);

	if (!plat_priv->shutdown_kobj) {

		cnss_pr_err("Failed to create shutdown_wlan kernel object\n");

		return -ENOMEM;

	}



	ret = sysfs_create_file(plat_priv->shutdown_kobj,

				&shutdown_attribute.attr);

	if (ret) {

		cnss_pr_err("Failed to create sysfs shutdown file, err = %d\n",

			    ret);

		kobject_put(plat_priv->shutdown_kobj);

		plat_priv->shutdown_kobj = NULL;

	}



	return ret;

}



static void cnss_remove_shutdown_sysfs(struct cnss_plat_data *plat_priv)

{

	if (plat_priv->shutdown_kobj) {

		sysfs_remove_file(plat_priv->shutdown_kobj,

				  &shutdown_attribute.attr);

		kobject_put(plat_priv->shutdown_kobj);

		plat_priv->shutdown_kobj = NULL;

	}

}



static int cnss_create_sysfs(struct cnss_plat_data *plat_priv)

{

	int ret = 0;



	ret = device_create_file(&plat_priv->plat_dev->dev, &dev_attr_fs_ready);

	if (ret) {

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

		cnss_pr_err("Failed to create device fs_ready file, err = %d\n",

			    ret);

		goto out;

	}



	cnss_create_shutdown_sysfs(plat_priv);



	return 0;

out:

	return ret;
@@ -2011,6 +2072,7 @@ static int cnss_create_sysfs(struct cnss_plat_data *plat_priv) 


static void cnss_remove_sysfs(struct cnss_plat_data *plat_priv)

{

	cnss_remove_shutdown_sysfs(plat_priv);

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

}

drivers/net/wireless/cnss2/main.h

+1 −0
Original line number Diff line number Diff line
@@ -363,6 +363,7 @@ struct cnss_plat_data { 
	int (*get_info_cb)(void *ctx, void *event, int event_len);

	u8 use_nv_mac;

	u8 set_wlaon_pwr_ctrl;

	struct kobject *shutdown_kobj;

};



#ifdef CONFIG_ARCH_QCOM