Commit d0555093 authored by Yan-Hsuan Chuang's avatar Yan-Hsuan Chuang Committed by Kalle Valo
Browse files

rtw88: add a debugfs entry to enable/disable coex mechanism 



Sometimes we need to stop the coex mechanism to debug, so that we
can manually control the device through various outer commands.
Hence, add a new debugfs coex_enable to allow us to enable/disable
the coex mechanism when driver is running.

To disable coex
echo 0 > /sys/kernel/debug/ieee80211/phyX/rtw88/coex_enable

To enable coex
echo 1 > /sys/kernel/debug/ieee80211/phyX/rtw88/coex_enable

To check coex dm is enabled or not
cat /sys/kernel/debug/ieee80211/phyX/rtw88/coex_enable

Signed-off-by: default avatarYan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200313033008.20070-3-yhchuang@realtek.com
parent 1fe188da

drivers/net/wireless/realtek/rtw88/debug.c

+45 −0
Original line number Diff line number Diff line
@@ -706,6 +706,45 @@ static int rtw_debugfs_get_coex_info(struct seq_file *m, void *v) 
	return 0;

}



static ssize_t rtw_debugfs_set_coex_enable(struct file *filp,

					   const char __user *buffer,

					   size_t count, loff_t *loff)

{

	struct seq_file *seqpriv = (struct seq_file *)filp->private_data;

	struct rtw_debugfs_priv *debugfs_priv = seqpriv->private;

	struct rtw_dev *rtwdev = debugfs_priv->rtwdev;

	struct rtw_coex *coex = &rtwdev->coex;

	char tmp[32 + 1];

	bool enable;

	int ret;



	rtw_debugfs_copy_from_user(tmp, sizeof(tmp), buffer, count, 1);



	ret = kstrtobool(tmp, &enable);

	if (ret) {

		rtw_warn(rtwdev, "invalid arguments\n");

		return ret;

	}



	mutex_lock(&rtwdev->mutex);

	coex->stop_dm = enable == 0;

	mutex_unlock(&rtwdev->mutex);



	return count;

}



static int rtw_debugfs_get_coex_enable(struct seq_file *m, void *v)

{

	struct rtw_debugfs_priv *debugfs_priv = m->private;

	struct rtw_dev *rtwdev = debugfs_priv->rtwdev;

	struct rtw_coex *coex = &rtwdev->coex;



	seq_printf(m, "coex mechanism %s\n",

		   coex->stop_dm ? "disabled" : "enabled");



	return 0;

}



#define rtw_debug_impl_mac(page, addr)				\

static struct rtw_debugfs_priv rtw_debug_priv_mac_ ##page = {	\

	.cb_read = rtw_debug_get_mac_page,			\
@@ -796,6 +835,11 @@ static struct rtw_debugfs_priv rtw_debug_priv_phy_info = { 
	.cb_read = rtw_debugfs_get_phy_info,

};



static struct rtw_debugfs_priv rtw_debug_priv_coex_enable = {

	.cb_write = rtw_debugfs_set_coex_enable,

	.cb_read = rtw_debugfs_get_coex_enable,

};



static struct rtw_debugfs_priv rtw_debug_priv_coex_info = {

	.cb_read = rtw_debugfs_get_coex_info,

};
@@ -831,6 +875,7 @@ void rtw_debugfs_init(struct rtw_dev *rtwdev) 
	rtw_debugfs_add_rw(rsvd_page);

	rtw_debugfs_add_r(phy_info);

	rtw_debugfs_add_r(coex_info);

	rtw_debugfs_add_rw(coex_enable);

	rtw_debugfs_add_r(mac_0);

	rtw_debugfs_add_r(mac_1);

	rtw_debugfs_add_r(mac_2);

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