diff mbox

[v4] wcn36xx: Set default BTLE coexistence config

Message ID 20171116080126.17239-1-rfried@codeaurora.org (mailing list archive)
State Accepted
Commit 4119b6160a35693655199f3e9e4a4d7b154a75b0
Delegated to: Kalle Valo
Headers show

Commit Message

Ramon Fried Nov. 16, 2017, 8:01 a.m. UTC
From: Eyal Ilsar <eilsar@codeaurora.org>

If the value for the firmware configuration parameters
BTC_STATIC_LEN_LE_BT and BTC_STATIC_LEN_LE_WLAN are not set the duty
cycle between BT and WLAN is such that if BT (including BLE) is active
WLAN gets 0 bandwidth. When tuning these parameters having a too high
value for WLAN means that BLE performance degrades.
The "sweet" point of roughly half of the maximal values was empirically
found to achieve a balance between BLE and Wi-Fi coexistence
performance.

Signed-off-by: Eyal Ilsar <eilsar@codeaurora.org>
Signed-off-by: Ramon Fried <rfried@codeaurora.org>
---
 drivers/net/wireless/ath/wcn36xx/smd.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Bjorn Andersson Nov. 16, 2017, 6:36 p.m. UTC | #1
On Thu 16 Nov 00:01 PST 2017, Ramon Fried wrote:

> From: Eyal Ilsar <eilsar@codeaurora.org>
> 
> If the value for the firmware configuration parameters
> BTC_STATIC_LEN_LE_BT and BTC_STATIC_LEN_LE_WLAN are not set the duty
> cycle between BT and WLAN is such that if BT (including BLE) is active
> WLAN gets 0 bandwidth. When tuning these parameters having a too high
> value for WLAN means that BLE performance degrades.
> The "sweet" point of roughly half of the maximal values was empirically
> found to achieve a balance between BLE and Wi-Fi coexistence
> performance.
> 
> Signed-off-by: Eyal Ilsar <eilsar@codeaurora.org>
> Signed-off-by: Ramon Fried <rfried@codeaurora.org>

Looks good,

Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

> ---
>  drivers/net/wireless/ath/wcn36xx/smd.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
> index 9c6590d5348a..6f1e741acf3e 100644
> --- a/drivers/net/wireless/ath/wcn36xx/smd.c
> +++ b/drivers/net/wireless/ath/wcn36xx/smd.c
> @@ -73,6 +73,8 @@ static struct wcn36xx_cfg_val wcn36xx_cfg_vals[] = {
>  	WCN36XX_CFG_VAL(TX_PWR_CTRL_ENABLE, 1),
>  	WCN36XX_CFG_VAL(ENABLE_CLOSE_LOOP, 1),
>  	WCN36XX_CFG_VAL(ENABLE_LPWR_IMG_TRANSITION, 0),
> +	WCN36XX_CFG_VAL(BTC_STATIC_LEN_LE_BT, 120000),
> +	WCN36XX_CFG_VAL(BTC_STATIC_LEN_LE_WLAN, 30000),
>  	WCN36XX_CFG_VAL(MAX_ASSOC_LIMIT, 10),
>  	WCN36XX_CFG_VAL(ENABLE_MCC_ADAPTIVE_SCHEDULER, 0),
>  };
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
Kalle Valo Dec. 2, 2017, 2:25 p.m. UTC | #2
Ramon Fried <rfried@codeaurora.org> wrote:

> If the value for the firmware configuration parameters
> BTC_STATIC_LEN_LE_BT and BTC_STATIC_LEN_LE_WLAN are not set the duty
> cycle between BT and WLAN is such that if BT (including BLE) is active
> WLAN gets 0 bandwidth. When tuning these parameters having a too high
> value for WLAN means that BLE performance degrades.
> The "sweet" point of roughly half of the maximal values was empirically
> found to achieve a balance between BLE and Wi-Fi coexistence
> performance.
> 
> Signed-off-by: Eyal Ilsar <eilsar@codeaurora.org>
> Signed-off-by: Ramon Fried <rfried@codeaurora.org>
> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

Patch applied to ath-next branch of ath.git, thanks.

4119b6160a35 wcn36xx: set default BTLE coexistence config
diff mbox

Patch

diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index 9c6590d5348a..6f1e741acf3e 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -73,6 +73,8 @@  static struct wcn36xx_cfg_val wcn36xx_cfg_vals[] = {
 	WCN36XX_CFG_VAL(TX_PWR_CTRL_ENABLE, 1),
 	WCN36XX_CFG_VAL(ENABLE_CLOSE_LOOP, 1),
 	WCN36XX_CFG_VAL(ENABLE_LPWR_IMG_TRANSITION, 0),
+	WCN36XX_CFG_VAL(BTC_STATIC_LEN_LE_BT, 120000),
+	WCN36XX_CFG_VAL(BTC_STATIC_LEN_LE_WLAN, 30000),
 	WCN36XX_CFG_VAL(MAX_ASSOC_LIMIT, 10),
 	WCN36XX_CFG_VAL(ENABLE_MCC_ADAPTIVE_SCHEDULER, 0),
 };