[PATCH 1/3] wcn36xx: Set LINK_FAIL_TX_CNT non zero on wcn3620/wcn3660

[Bryan O'Donoghue]

The firmware parameter LINK_FAIL_TX_CNT maps to the prima configuration
file parameter gLinkFailTxCnt and is described as:

quote: " If within gLinkFailTimeout period(values is mentioned in msec) if
         FW doesn't receive acks for gLinkFailTxCnt number of packets, then
         link will be disconnected."

The downstream description sets a minimum value of 1000 a maximum value of
60000 and a default value of 6000, however it appears that unless we
actually set this value deliberately firmware defaults it to 0.

Setting this value to non-zero results in the firmware doing link
monitoring.

In conjunction with ieee80211_hw_set(wcn->hw, CONNECTION_MONITOR); this
change effects offload of link monitoring to the firmware.

Tested with:
'CNSS-PR-2-0-1-2-c1-74-130449-3' wcn3620
'CNSS-PR-2-0-1-2-c1-00083'       wcn3680

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
---
 drivers/net/wireless/ath/wcn36xx/smd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index 766400f7b61c..262978371c1f 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -78,6 +78,7 @@ static struct wcn36xx_cfg_val wcn36xx_cfg_vals[] = {
 	WCN36XX_CFG_VAL(MAX_ASSOC_LIMIT, 10),
 	WCN36XX_CFG_VAL(ENABLE_MCC_ADAPTIVE_SCHEDULER, 0),
 	WCN36XX_CFG_VAL(ENABLE_DYNAMIC_RA_START_RATE, 133), /* MCS 5 */
+	WCN36XX_CFG_VAL(LINK_FAIL_TX_CNT, 200),
 };
 
 static struct wcn36xx_cfg_val wcn3680_cfg_vals[] = {
-- 
2.28.0