ath10k: add quiet mode support for QCA6174/QCA9377

To enable thermal throttling for QCA6174 and QCA9377,
implement gen_pdev_set_quiet_mode for them.
With this change, quiet period for QCA6174/QCA9377 can
be also set/get via debugfs.
Usage:
To set quiet period:
 echo <period> > /sys/kernel/debug/ieee80211/phyX/ath10k/quiet_period
To get the current quiet period:
 cat /sys/kernel/debug/ieee80211/phyX/ath10k/quiet_period

This change has been verified with
QCA6174 hw3.2(fw: WLAN_RM.4.4.1-00102-QCARMSWP-1).

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

diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
index 01f4eb201330f5be14e6fe41278cb71838481b44..2e34a1fc5ba684c5006da61a97657f11791f18d9 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c
+++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c
@@ -3135,6 +3135,37 @@ ath10k_wmi_tlv_op_gen_tdls_peer_update(struct ath10k *ar,
        return skb;
 }
 
+static struct sk_buff *
+ath10k_wmi_tlv_op_gen_pdev_set_quiet_mode(struct ath10k *ar, u32 period,
+                                         u32 duration, u32 next_offset,
+                                         u32 enabled)
+{
+       struct wmi_tlv_set_quiet_cmd *cmd;
+       struct wmi_tlv *tlv;
+       struct sk_buff *skb;
+
+       skb = ath10k_wmi_alloc_skb(ar, sizeof(*tlv) + sizeof(*cmd));
+       if (!skb)
+               return ERR_PTR(-ENOMEM);
+
+       tlv = (void *)skb->data;
+       tlv->tag = __cpu_to_le16(WMI_TLV_TAG_STRUCT_PDEV_SET_QUIET_CMD);
+       tlv->len = __cpu_to_le16(sizeof(*cmd));
+       cmd = (void *)tlv->value;
+
+       /* vdev_id is not in use, set to 0 */
+       cmd->vdev_id = __cpu_to_le32(0);
+       cmd->period = __cpu_to_le32(period);
+       cmd->duration = __cpu_to_le32(duration);
+       cmd->next_start = __cpu_to_le32(next_offset);
+       cmd->enabled = __cpu_to_le32(enabled);
+
+       ath10k_dbg(ar, ATH10K_DBG_WMI,
+                  "wmi tlv quiet param: period %u duration %u enabled %d\n",
+                  period, duration, enabled);
+       return skb;
+}
+
 static struct sk_buff *
 ath10k_wmi_tlv_op_gen_wow_enable(struct ath10k *ar)
 {
@@ -3854,7 +3885,7 @@ static const struct wmi_ops wmi_tlv_ops = {
        .gen_dbglog_cfg = ath10k_wmi_tlv_op_gen_dbglog_cfg,
        .gen_pktlog_enable = ath10k_wmi_tlv_op_gen_pktlog_enable,
        .gen_pktlog_disable = ath10k_wmi_tlv_op_gen_pktlog_disable,
-       /* .gen_pdev_set_quiet_mode not implemented */
+       .gen_pdev_set_quiet_mode = ath10k_wmi_tlv_op_gen_pdev_set_quiet_mode,
        .gen_pdev_get_temperature = ath10k_wmi_tlv_op_gen_pdev_get_temperature,
        /* .gen_addba_clear_resp not implemented */
        /* .gen_addba_send not implemented */

diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.h b/drivers/net/wireless/ath/ath10k/wmi-tlv.h
index 954c50bb3f6650d9fbaab4e6a40c6b270a71ad5a..3e1e340cd8344732b572d13c7bba50603eb5a87d 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/wmi-tlv.h
+++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2005-2011 Atheros Communications Inc.
  * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
+ * Copyright (c) 2018, The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -1952,6 +1953,21 @@ struct wmi_tlv_wow_add_del_event_cmd {
        __le32 event_bitmap;
 } __packed;
 
+/* Command to set/unset chip in quiet mode */
+struct wmi_tlv_set_quiet_cmd {
+       __le32 vdev_id;
+
+       /* in TUs */
+       __le32 period;
+
+       /* in TUs */
+       __le32 duration;
+
+       /* offset in TUs */
+       __le32 next_start;
+       __le32 enabled;
+} __packed;
+
 struct wmi_tlv_wow_enable_cmd {
        __le32 enable;
 } __packed;