[PATCH] ath11k: set DTIM policy to stick mode for station interface

[Carl Huang]

Set DTIM policy to DTIM stick mode, so station follows AP DTIM
interval rather than listen interval which is set in peer assoc cmd.
DTIM stick mode is more preferred per firmware team request.

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

Signed-off-by: Carl Huang <cjhuang at codeaurora.org>
---
 drivers/net/wireless/ath/ath11k/mac.c | 7 +++++++
 drivers/net/wireless/ath/ath11k/wmi.h | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index bb5d12f40..9a86856 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -2219,6 +2219,13 @@ static void ath11k_bss_assoc(struct ieee80211_hw *hw,
 			    arvif->vdev_id, ret);
 
 	ath11k_mac_11d_scan_stop_all(ar->ab);
+
+	ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+					    WMI_VDEV_PARAM_DTIM_POLICY,
+					    WMI_DTIM_POLICY_STICK);
+	if (ret)
+		ath11k_warn(ar->ab, "failed to set vdev %d dtim policy: %d\n",
+			    arvif->vdev_id, ret);
 }
 
 static void ath11k_bss_disassoc(struct ieee80211_hw *hw,
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 6848089..28e2e57 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -2191,6 +2191,13 @@ enum wmi_nss_ratio {
 	WMI_NSS_RATIO_2_NSS = 0x3,
 };
 
+enum wmi_dtim_policy {
+	WMI_DTIM_POLICY_IGNORE = 1,
+	WMI_DTIM_POLICY_NORMAL = 2,
+	WMI_DTIM_POLICY_STICK  = 3,
+	WMI_DTIM_POLICY_AUTO   = 4,
+};
+
 struct wmi_host_pdev_band_to_mac {
 	u32 pdev_id;
 	u32 start_freq;
-- 
2.7.4