iwlwifi: use new mac80211 SMPS

Instead of hard-coding the SM PS mode per hardware,
this makes iwlwifi support the new mac80211 API for
controlling the SM PS mode.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-1000.c b/drivers/net/wireless/iwlwifi/iwl-1000.c
index 9d4fdd7..5759f91 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-1000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-1000.c
@@ -174,7 +174,6 @@ struct iwl_cfg iwl1000_bgn_cfg = {
        .use_rts_for_ht = true, /* use rts/cts protection */
        .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
        .support_ct_kill_exit = true,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 struct iwl_cfg iwl1000_bg_cfg = {

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 386513b..34778cf 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -2239,7 +2239,6 @@ struct iwl_cfg iwl4965_agn_cfg = {
        .broken_powersave = true,
        .led_compensation = 61,
        .chain_noise_num_beacons = IWL4965_CAL_NUM_BEACONS,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 /* Module firmware */

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 5a277cd..3236315 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -1600,7 +1600,6 @@ struct iwl_cfg iwl5300_agn_cfg = {
        .ht_greenfield_support = true,
        .led_compensation = 51,
        .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 struct iwl_cfg iwl5100_bgn_cfg = {
@@ -1669,7 +1668,6 @@ struct iwl_cfg iwl5100_agn_cfg = {
        .ht_greenfield_support = true,
        .led_compensation = 51,
        .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 struct iwl_cfg iwl5350_agn_cfg = {
@@ -1693,7 +1691,6 @@ struct iwl_cfg iwl5350_agn_cfg = {
        .ht_greenfield_support = true,
        .led_compensation = 51,
        .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 struct iwl_cfg iwl5150_agn_cfg = {
@@ -1717,7 +1714,6 @@ struct iwl_cfg iwl5150_agn_cfg = {
        .ht_greenfield_support = true,
        .led_compensation = 51,
        .chain_noise_num_beacons = IWL_CAL_NUM_BEACONS,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 struct iwl_cfg iwl5150_abg_cfg = {

diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
index fec4377..788457a 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-6000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
@@ -307,7 +307,6 @@ struct iwl_cfg iwl6000i_2agn_cfg = {
        .supports_idle = true,
        .adv_thermal_throttle = true,
        .support_ct_kill_exit = true,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 struct iwl_cfg iwl6000i_2abg_cfg = {
@@ -396,7 +395,6 @@ struct iwl_cfg iwl6050_2agn_cfg = {
        .supports_idle = true,
        .adv_thermal_throttle = true,
        .support_ct_kill_exit = true,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DYNAMIC,
 };
 
 struct iwl_cfg iwl6050_2abg_cfg = {
@@ -456,7 +454,6 @@ struct iwl_cfg iwl6000_3agn_cfg = {
        .supports_idle = true,
        .adv_thermal_throttle = true,
        .support_ct_kill_exit = true,
-       .sm_ps_mode = WLAN_HT_CAP_SM_PS_DISABLED,
 };
 
 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 0b3669f..904b5d8 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2623,6 +2623,10 @@ static int iwl_setup_mac(struct iwl_priv *priv)
                hw->flags |= IEEE80211_HW_SUPPORTS_PS |
                             IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
 
+       if (priv->cfg->sku & IWL_SKU_N)
+               hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
+                            IEEE80211_HW_SUPPORTS_STATIC_SMPS;
+
        hw->sta_data_size = sizeof(struct iwl_station_priv);
        hw->wiphy->interface_modes =
                BIT(NL80211_IFTYPE_STATION) |
@@ -3361,6 +3365,7 @@ static int iwl_init_drv(struct iwl_priv *priv)
        priv->band = IEEE80211_BAND_2GHZ;
 
        priv->iw_mode = NL80211_IFTYPE_STATION;
+       priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
 
        /* 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 c3c31dc..e3b96b4 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -450,8 +450,6 @@ 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 &
-                            (priv->cfg->sm_ps_mode << 2));
        max_bit_rate = MAX_BIT_RATE_20_MHZ;
        if (priv->hw_params.ht40_channel & BIT(band)) {
                ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
@@ -636,7 +634,7 @@ EXPORT_SYMBOL(iwlcore_rts_tx_cmd_flag);
 
 static bool is_single_rx_stream(struct iwl_priv *priv)
 {
-       return !priv->current_ht_config.is_ht ||
+       return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
               priv->current_ht_config.single_chain_sufficient;
 }
 
@@ -1003,28 +1001,18 @@ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
  */
 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
 {
-       int idle_cnt = active_cnt;
-       bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
-
-       /* # Rx chains when idling and maybe trying to save power */
-       switch (priv->cfg->sm_ps_mode) {
-       case WLAN_HT_CAP_SM_PS_STATIC:
-               idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE;
-               break;
-       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:
-               break;
-       case WLAN_HT_CAP_SM_PS_INVALID:
+       /* # Rx chains when idling, depending on SMPS mode */
+       switch (priv->current_ht_config.smps) {
+       case IEEE80211_SMPS_STATIC:
+       case IEEE80211_SMPS_DYNAMIC:
+               return IWL_NUM_IDLE_CHAINS_SINGLE;
+       case IEEE80211_SMPS_OFF:
+               return active_cnt;
        default:
-               IWL_ERR(priv, "invalid sm_ps mode %u\n",
-                       priv->cfg->sm_ps_mode);
-               WARN_ON(1);
-               break;
+               WARN(1, "invalid SMPS mode %d",
+                    priv->current_ht_config.smps);
+               return active_cnt;
        }
-       return idle_cnt;
 }
 
 /* up to 4 chains */
@@ -2686,6 +2674,21 @@ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
                IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
        }
 
+       if (changed & (IEEE80211_CONF_CHANGE_SMPS |
+                      IEEE80211_CONF_CHANGE_CHANNEL)) {
+               /* mac80211 uses static for non-HT which is what we want */
+               priv->current_ht_config.smps = conf->smps_mode;
+
+               /*
+                * Recalculate chain counts.
+                *
+                * If monitor mode is enabled then mac80211 will
+                * set up the SM PS mode to OFF if an HT channel is
+                * configured.
+                */
+               if (priv->cfg->ops->hcmd->set_rxon_chain)
+                       priv->cfg->ops->hcmd->set_rxon_chain(priv);
+       }
 
        /* during scanning mac80211 will delay channel setting until
         * scan finish with changed = 0
@@ -2782,10 +2785,6 @@ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
                iwl_set_tx_power(priv, conf->power_level, false);
        }
 
-       /* call to ensure that 4965 rx_chain is set properly in monitor mode */
-       if (priv->cfg->ops->hcmd->set_rxon_chain)
-               priv->cfg->ops->hcmd->set_rxon_chain(priv);
-
        if (!iwl_is_ready(priv)) {
                IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
                goto out;

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index 650d380..f7acbb3 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -232,7 +232,6 @@ 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
- * @sm_ps_mode: spatial multiplexing power save mode
  * @support_wimax_coexist: support wimax/wifi co-exist
  *
  * We enable the driver to be backward compatible wrt API version. The
@@ -289,7 +288,6 @@ struct iwl_cfg {
        const bool supports_idle;
        bool adv_thermal_throttle;
        bool support_ct_kill_exit;
-       u8 sm_ps_mode;
        const bool support_wimax_coexist;
 };
 

diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index b3a29c7..1e12e73 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -512,6 +512,7 @@ struct iwl_ht_config {
        bool is_ht;
        bool is_40mhz;
        bool single_chain_sufficient;
+       enum ieee80211_smps_mode smps; /* current smps mode */
        /* BSS related data */
        u8 extension_chan_offset;
        u8 ht_protection;