rtw88: remove misleading module parameter rtw_fw_support_lps

The module parameter rtw_fw_support_lps is misleading. It
is not used to represent the firmware's property, but to
determine if driver wants to ask firmware to enter LPS.

However, driver should better enable/disable PS through
cfg80211_ops::set_power_mgmt instead.
For example, one could use iw command to set PS state.

  $ sudo iw wlanX set power_save [on/off]

So rtw_fw_support_lps should be removed because it is
misleading and useless. Instead of checking the parameter,
set PS mode according to IEEE80211_CONF_PS.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c
index 22b13e4..97777c7 100644 (file)
--- a/drivers/net/wireless/realtek/rtw88/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw88/mac80211.c
@@ -74,6 +74,15 @@ static int rtw_ops_config(struct ieee80211_hw *hw, u32 changed)
                }
        }
 
+       if (changed & IEEE80211_CONF_CHANGE_PS) {
+               if (hw->conf.flags & IEEE80211_CONF_PS) {
+                       rtwdev->ps_enabled = true;
+               } else {
+                       rtwdev->ps_enabled = false;
+                       rtw_leave_lps(rtwdev);
+               }
+       }
+
        if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
                rtw_set_channel(rtwdev);
 

diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
index 3c366a3..a3e9f91 100644 (file)
--- a/drivers/net/wireless/realtek/rtw88/main.c
+++ b/drivers/net/wireless/realtek/rtw88/main.c
@@ -16,16 +16,13 @@
 
 unsigned int rtw_fw_lps_deep_mode;
 EXPORT_SYMBOL(rtw_fw_lps_deep_mode);
-static bool rtw_fw_support_lps;
 unsigned int rtw_debug_mask;
 EXPORT_SYMBOL(rtw_debug_mask);
 
 module_param_named(lps_deep_mode, rtw_fw_lps_deep_mode, uint, 0644);
-module_param_named(support_lps, rtw_fw_support_lps, bool, 0644);
 module_param_named(debug_mask, rtw_debug_mask, uint, 0644);
 
 MODULE_PARM_DESC(lps_deep_mode, "Deeper PS mode. If 0, deep PS is disabled");
-MODULE_PARM_DESC(support_lps, "Set Y to enable Leisure Power Save support, to turn radio off between beacons");
 MODULE_PARM_DESC(debug_mask, "Debugging mask");
 
 static struct ieee80211_channel rtw_channeltable_2g[] = {
@@ -117,8 +114,6 @@ static struct ieee80211_supported_band rtw_band_5ghz = {
 
 struct rtw_watch_dog_iter_data {
        struct rtw_vif *rtwvif;
-       bool active;
-       u8 assoc_cnt;
 };
 
 static void rtw_vif_watch_dog_iter(void *data, u8 *mac,
@@ -127,18 +122,9 @@ static void rtw_vif_watch_dog_iter(void *data, u8 *mac,
        struct rtw_watch_dog_iter_data *iter_data = data;
        struct rtw_vif *rtwvif = (struct rtw_vif *)vif->drv_priv;
 
-       if (vif->type == NL80211_IFTYPE_STATION) {
-               if (vif->bss_conf.assoc) {
-                       iter_data->assoc_cnt++;
+       if (vif->type == NL80211_IFTYPE_STATION)
+               if (vif->bss_conf.assoc)
                        iter_data->rtwvif = rtwvif;
-               }
-               if (rtwvif->stats.tx_cnt > RTW_LPS_THRESHOLD ||
-                   rtwvif->stats.rx_cnt > RTW_LPS_THRESHOLD)
-                       iter_data->active = true;
-       } else {
-               /* only STATION mode can enter lps */
-               iter_data->active = true;
-       }
 
        rtwvif->stats.tx_unicast = 0;
        rtwvif->stats.rx_unicast = 0;
@@ -155,6 +141,7 @@ static void rtw_watch_dog_work(struct work_struct *work)
                                              watch_dog_work.work);
        struct rtw_watch_dog_iter_data data = {};
        bool busy_traffic = test_bit(RTW_FLAG_BUSY_TRAFFIC, rtwdev->flags);
+       bool ps_active;
 
        mutex_lock(&rtwdev->mutex);
 
@@ -172,6 +159,12 @@ static void rtw_watch_dog_work(struct work_struct *work)
        if (busy_traffic != test_bit(RTW_FLAG_BUSY_TRAFFIC, rtwdev->flags))
                rtw_coex_wl_status_change_notify(rtwdev);
 
+       if (rtwdev->stats.tx_cnt > RTW_LPS_THRESHOLD ||
+           rtwdev->stats.rx_cnt > RTW_LPS_THRESHOLD)
+               ps_active = true;
+       else
+               ps_active = false;
+
        /* reset tx/rx statictics */
        rtwdev->stats.tx_unicast = 0;
        rtwdev->stats.rx_unicast = 0;
@@ -192,9 +185,13 @@ static void rtw_watch_dog_work(struct work_struct *work)
        /* fw supports only one station associated to enter lps, if there are
         * more than two stations associated to the AP, then we can not enter
         * lps, because fw does not handle the overlapped beacon interval
+        *
+        * mac80211 should iterate vifs and determine if driver can enter
+        * ps by passing IEEE80211_CONF_PS to us, all we need to do is to
+        * get that vif and check if device is having traffic more than the
+        * threshold.
         */
-       if (rtw_fw_support_lps &&
-           data.rtwvif && !data.active && data.assoc_cnt == 1)
+       if (rtwdev->ps_enabled && data.rtwvif && !ps_active)
                rtw_enter_lps(rtwdev, data.rtwvif->port);
 
        rtwdev->watch_dog_cnt++;

diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index 6221dc4..161297a 100644 (file)
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -1372,6 +1372,7 @@ struct rtw_dev {
 
        /* lps power state & handler work */
        struct rtw_lps_conf lps_conf;
+       bool ps_enabled;
 
        struct dentry *debugfs;