[PATCH v2 1/2] ath11k: convert ath11k_wmi_pdev_set_ps_mode() to use enum wmi_sta_ps_mode

[PATCH v2 1/2] ath11k: convert ath11k_wmi_pdev_set_ps_mode() to use enum wmi_sta_ps_mode

[Kalle Valo]

It's more descriptive to use the actual enum used by the firmware instead of a
boolean so change ath11k_wmi_pdev_set_ps_mode() to use a boolean.

Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

v2:

* new patch

 drivers/net/wireless/ath/ath11k/mac.c | 3 ++-
 drivers/net/wireless/ath/ath11k/wmi.c | 7 ++++---
 drivers/net/wireless/ath/ath11k/wmi.h | 3 ++-
 3 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index 1cc55602787b..f6511fc8ae8c 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -5638,7 +5638,8 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
 			goto err_peer_del;
 		}
 
-		ret = ath11k_wmi_pdev_set_ps_mode(ar, arvif->vdev_id, false);
+		ret = ath11k_wmi_pdev_set_ps_mode(ar, arvif->vdev_id,
+						  WMI_STA_PS_MODE_DISABLED);
 		if (ret) {
 			ath11k_warn(ar->ab, "failed to disable vdev %d ps mode: %d\n",
 				    arvif->vdev_id, ret);
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index 5ae2ef4680d6..b9bfe0407cd7 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -1244,7 +1244,8 @@ int ath11k_wmi_pdev_set_param(struct ath11k *ar, u32 param_id,
 	return ret;
 }
 
-int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id, u32 enable)
+int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id,
+				enum wmi_sta_ps_mode psmode)
 {
 	struct ath11k_pdev_wmi *wmi = ar->wmi;
 	struct wmi_pdev_set_ps_mode_cmd *cmd;
@@ -1259,7 +1260,7 @@ int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id, u32 enable)
 	cmd->tlv_header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_STA_POWERSAVE_MODE_CMD) |
 			  FIELD_PREP(WMI_TLV_LEN, sizeof(*cmd) - TLV_HDR_SIZE);
 	cmd->vdev_id = vdev_id;
-	cmd->sta_ps_mode = enable;
+	cmd->sta_ps_mode = psmode;
 
 	ret = ath11k_wmi_cmd_send(wmi, skb, WMI_STA_POWERSAVE_MODE_CMDID);
 	if (ret) {
@@ -1269,7 +1270,7 @@ int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id, u32 enable)
 
 	ath11k_dbg(ar->ab, ATH11K_DBG_WMI,
 		   "WMI vdev set psmode %d vdev id %d\n",
-		   enable, vdev_id);
+		   psmode, vdev_id);
 
 	return ret;
 }
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 0584e68e7593..93e2992db862 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -5351,7 +5351,8 @@ int ath11k_wmi_set_peer_param(struct ath11k *ar, const u8 *peer_addr,
 			      u32 vdev_id, u32 param_id, u32 param_val);
 int ath11k_wmi_pdev_set_param(struct ath11k *ar, u32 param_id,
 			      u32 param_value, u8 pdev_id);
-int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id, u32 enable);
+int ath11k_wmi_pdev_set_ps_mode(struct ath11k *ar, int vdev_id,
+				enum wmi_sta_ps_mode psmode);
 int ath11k_wmi_wait_for_unified_ready(struct ath11k_base *ab);
 int ath11k_wmi_cmd_init(struct ath11k_base *ab);
 int ath11k_wmi_wait_for_service_ready(struct ath11k_base *ab);

base-commit: 042696e7d5cff4bf705caa191ea458352bcc07f3
-- 
2.20.1


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[PATCH v2 2/2] ath11k: enable 802.11 power save mode in station mode

[Kalle Valo]

From: Carl Huang <cjhuang@codeaurora.org>

To reduce power consumption enable 802.11 power save mode in station mode. This
allows both radio and CPU to sleep more.

Only enable the mode on QCA6390 and WCN6855, it's unknown how other hardware
families support this feature.

To test that power save mode is running run "iw dev wls1 set power_save off",
check there is no NULL Data frame seen by a sniffer. And run "iw dev wls1 set power_save
on" and check there is a NULL Data frame in sniffer.

Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1

Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

v2:

* improve commit log

* use existing ath11k_wmi_pdev_set_ps_mode()

* rename protocol_ps to supports_sta_ps

* cosmetic changes

 drivers/net/wireless/ath/ath11k/core.c |  5 ++
 drivers/net/wireless/ath/ath11k/core.h |  1 +
 drivers/net/wireless/ath/ath11k/hw.h   |  1 +
 drivers/net/wireless/ath/ath11k/mac.c  | 87 ++++++++++++++++++++++++++
 4 files changed, 94 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index b5a2af3ffc3e..a6c0d5ad7f9b 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -76,6 +76,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = true,
 		.supports_shadow_regs = false,
 		.idle_ps = false,
+		.supports_sta_ps = false,
 		.cold_boot_calib = true,
 		.supports_suspend = false,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
@@ -125,6 +126,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = true,
 		.supports_shadow_regs = false,
 		.idle_ps = false,
+		.supports_sta_ps = false,
 		.cold_boot_calib = true,
 		.supports_suspend = false,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
@@ -173,6 +175,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = false,
 		.supports_shadow_regs = true,
 		.idle_ps = true,
+		.supports_sta_ps = true,
 		.cold_boot_calib = false,
 		.supports_suspend = true,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
@@ -221,6 +224,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = true,
 		.supports_shadow_regs = false,
 		.idle_ps = false,
+		.supports_sta_ps = false,
 		.cold_boot_calib = false,
 		.supports_suspend = false,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_qcn9074),
@@ -269,6 +273,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.supports_monitor = false,
 		.supports_shadow_regs = true,
 		.idle_ps = true,
+		.supports_sta_ps = true,
 		.cold_boot_calib = false,
 		.supports_suspend = true,
 		.hal_desc_sz = sizeof(struct hal_rx_desc_wcn6855),
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 31d234a51c79..2f1e10b7cc17 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -240,6 +240,7 @@ struct ath11k_vif {
 	bool is_started;
 	bool is_up;
 	bool spectral_enabled;
+	bool ps;
 	u32 aid;
 	u8 bssid[ETH_ALEN];
 	struct cfg80211_bitrate_mask bitrate_mask;
diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h
index 19223d36846e..1c298c24b617 100644
--- a/drivers/net/wireless/ath/ath11k/hw.h
+++ b/drivers/net/wireless/ath/ath11k/hw.h
@@ -170,6 +170,7 @@ struct ath11k_hw_params {
 	bool supports_monitor;
 	bool supports_shadow_regs;
 	bool idle_ps;
+	bool supports_sta_ps;
 	bool cold_boot_calib;
 	bool supports_suspend;
 	u32 hal_desc_sz;
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index f6511fc8ae8c..82fd44f34df2 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -1049,6 +1049,83 @@ static int ath11k_mac_monitor_stop(struct ath11k *ar)
 	return 0;
 }
 
+static int ath11k_mac_vif_setup_ps(struct ath11k_vif *arvif)
+{
+	struct ath11k *ar = arvif->ar;
+	struct ieee80211_vif *vif = arvif->vif;
+	struct ieee80211_conf *conf = &ar->hw->conf;
+	enum wmi_sta_powersave_param param;
+	enum wmi_sta_ps_mode psmode;
+	int ret;
+	int timeout;
+	bool enable_ps;
+
+	lockdep_assert_held(&arvif->ar->conf_mutex);
+
+	if (arvif->vif->type != NL80211_IFTYPE_STATION)
+		return 0;
+
+	enable_ps = arvif->ps;
+
+	if (!arvif->is_started) {
+		/* mac80211 can update vif powersave state while disconnected.
+		 * Firmware doesn't behave nicely and consumes more power than
+		 * necessary if PS is disabled on a non-started vdev. Hence
+		 * force-enable PS for non-running vdevs.
+		 */
+		psmode = WMI_STA_PS_MODE_ENABLED;
+	} else if (enable_ps) {
+		psmode = WMI_STA_PS_MODE_ENABLED;
+		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;
+
+		timeout = conf->dynamic_ps_timeout;
+		if (timeout == 0) {
+			/* firmware doesn't like 0 */
+			timeout = ieee80211_tu_to_usec(vif->bss_conf.beacon_int) / 1000;
+		}
+
+		ret = ath11k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
+						  timeout);
+		if (ret) {
+			ath11k_warn(ar->ab, "failed to set inactivity time for vdev %d: %i\n",
+				    arvif->vdev_id, ret);
+			return ret;
+		}
+	} else {
+		psmode = WMI_STA_PS_MODE_DISABLED;
+	}
+
+	ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vdev %d psmode %s\n",
+		   arvif->vdev_id, psmode ? "enable" : "disable");
+
+	ret = ath11k_wmi_pdev_set_ps_mode(ar, arvif->vdev_id, psmode);
+	if (ret) {
+		ath11k_warn(ar->ab, "failed to set sta power save mode %d for vdev %d: %d\n",
+			    psmode, arvif->vdev_id, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int ath11k_mac_config_ps(struct ath11k *ar)
+{
+	struct ath11k_vif *arvif;
+	int ret = 0;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	list_for_each_entry(arvif, &ar->arvifs, list) {
+		ret = ath11k_mac_vif_setup_ps(arvif);
+		if (ret) {
+			ath11k_warn(ar->ab, "failed to setup powersave: %d\n", ret);
+			break;
+		}
+	}
+
+	return ret;
+}
+
 static int ath11k_mac_op_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct ath11k *ar = hw->priv;
@@ -2942,6 +3019,16 @@ static void ath11k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
 		ath11k_mac_txpower_recalc(ar);
 	}
 
+	if (changed & BSS_CHANGED_PS &&
+	    ar->ab->hw_params.supports_sta_ps) {
+		arvif->ps = vif->bss_conf.ps;
+
+		ret = ath11k_mac_config_ps(ar);
+		if (ret)
+			ath11k_warn(ar->ab, "failed to setup ps on vdev %i: %d\n",
+				    arvif->vdev_id, ret);
+	}
+
 	if (changed & BSS_CHANGED_MCAST_RATE &&
 	    !ath11k_mac_vif_chan(arvif->vif, &def)) {
 		band = def.chan->band;
-- 
2.20.1


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Re: [PATCH v2 1/2] ath11k: convert ath11k_wmi_pdev_set_ps_mode() to use enum wmi_sta_ps_mode

[Kalle Valo]

Kalle Valo <kvalo@codeaurora.org> wrote:

> It's more descriptive to use the actual enum used by the firmware instead of a
> boolean so change ath11k_wmi_pdev_set_ps_mode() to use a boolean.
> 
> Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
> 
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

2 patches applied to ath-next branch of ath.git, thanks.

af3d89649bb6 ath11k: convert ath11k_wmi_pdev_set_ps_mode() to use enum wmi_sta_ps_mode
b2beffa7d9a6 ath11k: enable 802.11 power save mode in station mode

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20211108123826.8463-1-kvalo@codeaurora.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches


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Re: [PATCH v2 2/2] ath11k: enable 802.11 power save mode in station mode

[Mark Herbert]

Running the new patch version, looks good so far.

CPU reaches PC10, and in idle can be about 80% in PC10 which is perfect.

With the firmware 01740 which is the release firmware for linux 
everyting good until I try to reload module ath11k_pci.

With the downgraded firmware  01230 the card is crashing periodically 
but 01230 allows to do rmmod/modprobe ath11k sequence and happily 
recovers, and the PC10 state residency is also good.

The firmware hacked from Dell official Windows drivers ( fw_version 
0x10110341 fw_build_timestamp 2021-05-02 15:16 fw_build_id in dmesg) is 
somewhere in the middle. No crashes until modules reloaded, but on 
reload the chances are 50/50 if the card will come back or not. PC10 
residency is also perfect.

On 08.11.2021 15:38, Kalle Valo wrote:
> From: Carl Huang <cjhuang@codeaurora.org>
>
> To reduce power consumption enable 802.11 power save mode in station mode. This
> allows both radio and CPU to sleep more.
>
> Only enable the mode on QCA6390 and WCN6855, it's unknown how other hardware
> families support this feature.
>
> To test that power save mode is running run "iw dev wls1 set power_save off",
> check there is no NULL Data frame seen by a sniffer. And run "iw dev wls1 set power_save
> on" and check there is a NULL Data frame in sniffer.
>
> Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
>
> Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
> ---
>
> v2:
>
> * improve commit log
>
> * use existing ath11k_wmi_pdev_set_ps_mode()
>
> * rename protocol_ps to supports_sta_ps
>
> * cosmetic changes
>
>   drivers/net/wireless/ath/ath11k/core.c |  5 ++
>   drivers/net/wireless/ath/ath11k/core.h |  1 +
>   drivers/net/wireless/ath/ath11k/hw.h   |  1 +
>   drivers/net/wireless/ath/ath11k/mac.c  | 87 ++++++++++++++++++++++++++
>   4 files changed, 94 insertions(+)
>
> diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
> index b5a2af3ffc3e..a6c0d5ad7f9b 100644
> --- a/drivers/net/wireless/ath/ath11k/core.c
> +++ b/drivers/net/wireless/ath/ath11k/core.c
> @@ -76,6 +76,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
>   		.supports_monitor = true,
>   		.supports_shadow_regs = false,
>   		.idle_ps = false,
> +		.supports_sta_ps = false,
>   		.cold_boot_calib = true,
>   		.supports_suspend = false,
>   		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
> @@ -125,6 +126,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
>   		.supports_monitor = true,
>   		.supports_shadow_regs = false,
>   		.idle_ps = false,
> +		.supports_sta_ps = false,
>   		.cold_boot_calib = true,
>   		.supports_suspend = false,
>   		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
> @@ -173,6 +175,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
>   		.supports_monitor = false,
>   		.supports_shadow_regs = true,
>   		.idle_ps = true,
> +		.supports_sta_ps = true,
>   		.cold_boot_calib = false,
>   		.supports_suspend = true,
>   		.hal_desc_sz = sizeof(struct hal_rx_desc_ipq8074),
> @@ -221,6 +224,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
>   		.supports_monitor = true,
>   		.supports_shadow_regs = false,
>   		.idle_ps = false,
> +		.supports_sta_ps = false,
>   		.cold_boot_calib = false,
>   		.supports_suspend = false,
>   		.hal_desc_sz = sizeof(struct hal_rx_desc_qcn9074),
> @@ -269,6 +273,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
>   		.supports_monitor = false,
>   		.supports_shadow_regs = true,
>   		.idle_ps = true,
> +		.supports_sta_ps = true,
>   		.cold_boot_calib = false,
>   		.supports_suspend = true,
>   		.hal_desc_sz = sizeof(struct hal_rx_desc_wcn6855),
> diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
> index 31d234a51c79..2f1e10b7cc17 100644
> --- a/drivers/net/wireless/ath/ath11k/core.h
> +++ b/drivers/net/wireless/ath/ath11k/core.h
> @@ -240,6 +240,7 @@ struct ath11k_vif {
>   	bool is_started;
>   	bool is_up;
>   	bool spectral_enabled;
> +	bool ps;
>   	u32 aid;
>   	u8 bssid[ETH_ALEN];
>   	struct cfg80211_bitrate_mask bitrate_mask;
> diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h
> index 19223d36846e..1c298c24b617 100644
> --- a/drivers/net/wireless/ath/ath11k/hw.h
> +++ b/drivers/net/wireless/ath/ath11k/hw.h
> @@ -170,6 +170,7 @@ struct ath11k_hw_params {
>   	bool supports_monitor;
>   	bool supports_shadow_regs;
>   	bool idle_ps;
> +	bool supports_sta_ps;
>   	bool cold_boot_calib;
>   	bool supports_suspend;
>   	u32 hal_desc_sz;
> diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
> index f6511fc8ae8c..82fd44f34df2 100644
> --- a/drivers/net/wireless/ath/ath11k/mac.c
> +++ b/drivers/net/wireless/ath/ath11k/mac.c
> @@ -1049,6 +1049,83 @@ static int ath11k_mac_monitor_stop(struct ath11k *ar)
>   	return 0;
>   }
>   
> +static int ath11k_mac_vif_setup_ps(struct ath11k_vif *arvif)
> +{
> +	struct ath11k *ar = arvif->ar;
> +	struct ieee80211_vif *vif = arvif->vif;
> +	struct ieee80211_conf *conf = &ar->hw->conf;
> +	enum wmi_sta_powersave_param param;
> +	enum wmi_sta_ps_mode psmode;
> +	int ret;
> +	int timeout;
> +	bool enable_ps;
> +
> +	lockdep_assert_held(&arvif->ar->conf_mutex);
> +
> +	if (arvif->vif->type != NL80211_IFTYPE_STATION)
> +		return 0;
> +
> +	enable_ps = arvif->ps;
> +
> +	if (!arvif->is_started) {
> +		/* mac80211 can update vif powersave state while disconnected.
> +		 * Firmware doesn't behave nicely and consumes more power than
> +		 * necessary if PS is disabled on a non-started vdev. Hence
> +		 * force-enable PS for non-running vdevs.
> +		 */
> +		psmode = WMI_STA_PS_MODE_ENABLED;
> +	} else if (enable_ps) {
> +		psmode = WMI_STA_PS_MODE_ENABLED;
> +		param = WMI_STA_PS_PARAM_INACTIVITY_TIME;
> +
> +		timeout = conf->dynamic_ps_timeout;
> +		if (timeout == 0) {
> +			/* firmware doesn't like 0 */
> +			timeout = ieee80211_tu_to_usec(vif->bss_conf.beacon_int) / 1000;
> +		}
> +
> +		ret = ath11k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
> +						  timeout);
> +		if (ret) {
> +			ath11k_warn(ar->ab, "failed to set inactivity time for vdev %d: %i\n",
> +				    arvif->vdev_id, ret);
> +			return ret;
> +		}
> +	} else {
> +		psmode = WMI_STA_PS_MODE_DISABLED;
> +	}
> +
> +	ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vdev %d psmode %s\n",
> +		   arvif->vdev_id, psmode ? "enable" : "disable");
> +
> +	ret = ath11k_wmi_pdev_set_ps_mode(ar, arvif->vdev_id, psmode);
> +	if (ret) {
> +		ath11k_warn(ar->ab, "failed to set sta power save mode %d for vdev %d: %d\n",
> +			    psmode, arvif->vdev_id, ret);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static int ath11k_mac_config_ps(struct ath11k *ar)
> +{
> +	struct ath11k_vif *arvif;
> +	int ret = 0;
> +
> +	lockdep_assert_held(&ar->conf_mutex);
> +
> +	list_for_each_entry(arvif, &ar->arvifs, list) {
> +		ret = ath11k_mac_vif_setup_ps(arvif);
> +		if (ret) {
> +			ath11k_warn(ar->ab, "failed to setup powersave: %d\n", ret);
> +			break;
> +		}
> +	}
> +
> +	return ret;
> +}
> +
>   static int ath11k_mac_op_config(struct ieee80211_hw *hw, u32 changed)
>   {
>   	struct ath11k *ar = hw->priv;
> @@ -2942,6 +3019,16 @@ static void ath11k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
>   		ath11k_mac_txpower_recalc(ar);
>   	}
>   
> +	if (changed & BSS_CHANGED_PS &&
> +	    ar->ab->hw_params.supports_sta_ps) {
> +		arvif->ps = vif->bss_conf.ps;
> +
> +		ret = ath11k_mac_config_ps(ar);
> +		if (ret)
> +			ath11k_warn(ar->ab, "failed to setup ps on vdev %i: %d\n",
> +				    arvif->vdev_id, ret);
> +	}
> +
>   	if (changed & BSS_CHANGED_MCAST_RATE &&
>   	    !ath11k_mac_vif_chan(arvif->vif, &def)) {
>   		band = def.chan->band;

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