From d05550936ac87bd067351e96f781051d6a2a642e Mon Sep 17 00:00:00 2001 From: Yan-Hsuan Chuang Date: Fri, 13 Mar 2020 11:30:07 +0800 Subject: [PATCH] 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: Yan-Hsuan Chuang Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20200313033008.20070-3-yhchuang@realtek.com --- drivers/net/wireless/realtek/rtw88/debug.c | 45 ++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/drivers/net/wireless/realtek/rtw88/debug.c b/drivers/net/wireless/realtek/rtw88/debug.c index b2d2642..b496430 100644 --- a/drivers/net/wireless/realtek/rtw88/debug.c +++ b/drivers/net/wireless/realtek/rtw88/debug.c @@ -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); -- 2.7.4