diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-6000.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 48 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-sta.c | 5 |
6 files changed, 52 insertions, 10 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c index 2f841a8576e..a4a8b5e2f41 100644 --- a/drivers/net/wireless/iwlwifi/iwl-6000.c +++ b/drivers/net/wireless/iwlwifi/iwl-6000.c @@ -490,6 +490,7 @@ struct iwl_cfg iwl6050_2agn_cfg = { .supports_idle = true, .adv_thermal_throttle = true, .support_ct_kill_exit = true, + .support_sm_ps = true, }; struct iwl_cfg iwl6050_2abg_cfg = { @@ -579,6 +580,7 @@ struct iwl_cfg iwl6050_3agn_cfg = { .supports_idle = true, .adv_thermal_throttle = true, .support_ct_kill_exit = true, + .support_sm_ps = true, }; MODULE_FIRMWARE(IWL6000_MODULE_FIRMWARE(IWL6000_UCODE_API_MAX)); diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 4a13f7e21d6..b5fe8f87aa7 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -3011,6 +3011,10 @@ static int iwl_init_drv(struct iwl_priv *priv) priv->band = IEEE80211_BAND_2GHZ; priv->iw_mode = NL80211_IFTYPE_STATION; + if (priv->cfg->support_sm_ps) + priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DYNAMIC; + else + priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED; /* Choose which receivers/antennas to use */ if (priv->cfg->ops->hcmd->set_rxon_chain) diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 256c9a49fa3..c4ff381e440 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -414,8 +414,12 @@ static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, if (priv->cfg->ht_greenfield_support) ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD; ht_info->cap |= IEEE80211_HT_CAP_SGI_20; - ht_info->cap |= (IEEE80211_HT_CAP_SM_PS & - (WLAN_HT_CAP_SM_PS_DISABLED << 2)); + if (priv->cfg->support_sm_ps) + ht_info->cap |= (IEEE80211_HT_CAP_SM_PS & + (WLAN_HT_CAP_SM_PS_DYNAMIC << 2)); + else + ht_info->cap |= (IEEE80211_HT_CAP_SM_PS & + (WLAN_HT_CAP_SM_PS_DISABLED << 2)); max_bit_rate = MAX_BIT_RATE_20_MHZ; if (priv->hw_params.ht40_channel & BIT(band)) { @@ -963,17 +967,35 @@ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) } /* - * When we are in power saving, there's no difference between - * using multiple chains or just a single chain, but due to the - * lack of SM PS we lose a lot of throughput if we use just a - * single chain. - * - * Therefore, use the active count here (which will use multiple - * chains unless connected to a legacy AP). + * When we are in power saving mode, unless device support spatial + * multiplexing power save, use the active count for rx chain count. */ static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) { - return active_cnt; + int idle_cnt = active_cnt; + bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); + + if (priv->cfg->support_sm_ps) { + /* # Rx chains when idling and maybe trying to save power */ + switch (priv->current_ht_config.sm_ps) { + case WLAN_HT_CAP_SM_PS_STATIC: + case WLAN_HT_CAP_SM_PS_DYNAMIC: + idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL : + IWL_NUM_IDLE_CHAINS_SINGLE; + break; + case WLAN_HT_CAP_SM_PS_DISABLED: + idle_cnt = (is_cam) ? active_cnt : + IWL_NUM_IDLE_CHAINS_SINGLE; + break; + case WLAN_HT_CAP_SM_PS_INVALID: + default: + IWL_ERR(priv, "invalid sm_ps mode %d\n", + priv->current_ht_config.sm_ps); + WARN_ON(1); + break; + } + } + return idle_cnt; } /* up to 4 chains */ @@ -2257,6 +2279,12 @@ static void iwl_ht_conf(struct iwl_priv *priv, >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; maxstreams += 1; + ht_conf->sm_ps = + (u8)((ht_cap->cap & IEEE80211_HT_CAP_SM_PS) + >> 2); + IWL_DEBUG_MAC80211(priv, "sm_ps: 0x%x\n", + ht_conf->sm_ps); + if ((ht_cap->mcs.rx_mask[1] == 0) && (ht_cap->mcs.rx_mask[2] == 0)) ht_conf->single_chain_sufficient = true; diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h index ddf0998fb75..d2e47dab38d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.h +++ b/drivers/net/wireless/iwlwifi/iwl-core.h @@ -228,6 +228,7 @@ struct iwl_mod_params { * @chain_noise_num_beacons: number of beacons used to compute chain noise * @adv_thermal_throttle: support advance thermal throttle * @support_ct_kill_exit: support ct kill exit condition + * @support_sm_ps: support spatial multiplexing power save * * We enable the driver to be backward compatible wrt API version. The * driver specifies which APIs it supports (with @ucode_api_max being the @@ -283,6 +284,7 @@ struct iwl_cfg { const bool supports_idle; bool adv_thermal_throttle; bool support_ct_kill_exit; + bool support_sm_ps; }; /*************************** diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index e7ce6738766..cb2642c18da 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -517,6 +517,7 @@ struct iwl_ht_config { bool is_ht; bool is_40mhz; bool single_chain_sufficient; + u8 sm_ps; /* BSS related data */ u8 extension_chan_offset; u8 ht_protection; diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c index ce1ceac19c7..74cc8dbe935 100644 --- a/drivers/net/wireless/iwlwifi/iwl-sta.c +++ b/drivers/net/wireless/iwlwifi/iwl-sta.c @@ -182,6 +182,11 @@ static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, goto done; mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; + IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n", + (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? + "static" : + (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? + "dynamic" : "disabled"); sta_flags = priv->stations[index].sta.station_flags; |