diff mbox series

[v2,2/4] rtlwifi: rtl8723ae: Don't use dm.undec_sm_pwdb for input

Message ID DB7PR07MB5353A56F7F5BD0EEC355346FE48F0@DB7PR07MB5353.eurprd07.prod.outlook.com
State Awaiting Upstream
Delegated to: David Miller
Headers show
Series rtlwifi: Fix issues with rtl8723ae | expand

Commit Message

Bernd Edlinger Jan. 5, 2019, 6:39 p.m. UTC 
gain control when no beacon was received in the connected state

When no beacon was received, the value in dm.undec_sm_pwdb is most
likely out of date and should not be used to adjust the input path.
Assume instead that the signal level is low.

Fix the state machine in rtl8723e_dm_cck_packet_detection_thresh
which did not clear pre_cck_fa_state when changing cur_cck_pd_state
from CCK_PD_STAGE_LOWRSSI/CCK_FA_STAGE_LOW to CCK_PD_STAGE_HIGHRSSI
and back again to CCK_PD_STAGE_LOWRSSI/CCK_FA_STAGE_LOW, the register
RCCK0_CCA not written to 0x83 on the second change.

Explicitly initialize pre_cck_fa_state/cur_cck_fa_state in
rtl_dm_diginit.

Signed-off-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
---
 drivers/net/wireless/realtek/rtlwifi/core.c         | 2 ++
 drivers/net/wireless/realtek/rtlwifi/rtl8723ae/dm.c | 8 ++++++++
 2 files changed, 10 insertions(+)

Comments

Andrew Lunn Jan. 5, 2019, 7:50 p.m. UTC | #1 
On Sat, Jan 05, 2019 at 06:39:02PM +0000, Bernd Edlinger wrote:
>  gain control when no beacon was received in the connected state

Hi Bernd

Your patch subject line is too long, so it got chopped in half. Please
use something shorter.

    Andrew
diff mbox series

Patch

diff --git a/drivers/net/wireless/realtek/rtlwifi/core.c b/drivers/net/wireless/realtek/rtlwifi/core.c
index 4bf7967..ce23339 100644
--- a/drivers/net/wireless/realtek/rtlwifi/core.c
+++ b/drivers/net/wireless/realtek/rtlwifi/core.c
@@ -1957,5 +1957,7 @@  void rtl_dm_diginit(struct ieee80211_hw *hw, u32 cur_igvalue)
 	dm_digtable->bt30_cur_igi = 0x32;
 	dm_digtable->pre_cck_pd_state = CCK_PD_STAGE_MAX;
 	dm_digtable->cur_cck_pd_state = CCK_PD_STAGE_LOWRSSI;
+	dm_digtable->pre_cck_fa_state = 0;
+	dm_digtable->cur_cck_fa_state = 0;
 }
 EXPORT_SYMBOL(rtl_dm_diginit);
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/dm.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/dm.c
index 42a6fba..902b944 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/dm.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/dm.c
@@ -151,8 +151,14 @@  static u8 rtl8723e_dm_initial_gain_min_pwdb(struct ieee80211_hw *hw)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct dig_t *dm_digtable = &rtlpriv->dm_digtable;
+	struct rtl_mac *mac = rtl_mac(rtlpriv);
 	long rssi_val_min = 0;
 
+	if (mac->link_state == MAC80211_LINKED &&
+	    mac->opmode == NL80211_IFTYPE_STATION &&
+	    rtlpriv->link_info.bcn_rx_inperiod == 0)
+		return 0;
+
 	if ((dm_digtable->curmultista_cstate == DIG_MULTISTA_CONNECT) &&
 	    (dm_digtable->cursta_cstate == DIG_STA_CONNECT)) {
 		if (rtlpriv->dm.entry_min_undec_sm_pwdb != 0)
@@ -417,6 +423,8 @@  static void rtl8723e_dm_cck_packet_detection_thresh(struct ieee80211_hw *hw)
 		} else {
 			rtl_set_bbreg(hw, RCCK0_CCA, MASKBYTE2, 0xcd);
 			rtl_set_bbreg(hw, RCCK0_SYSTEM, MASKBYTE1, 0x47);
+			dm_digtable->pre_cck_fa_state = 0;
+			dm_digtable->cur_cck_fa_state = 0;
 
 		}
 		dm_digtable->pre_cck_pd_state = dm_digtable->cur_cck_pd_state;