iwlwifi: nvm: honour VHT enable flag
Some devices don't support VHT (802.11ac) and this is encoded
in the data stored in the NVM. Read the flag and use it to set
up the VHT capabilities accordingly.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
index 6199a0a..8f2a4e9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/iwlwifi/iwl-nvm-parse.c
@@ -89,6 +89,7 @@
NVM_SKU_CAP_BAND_24GHZ = BIT(0),
NVM_SKU_CAP_BAND_52GHZ = BIT(1),
NVM_SKU_CAP_11N_ENABLE = BIT(2),
+ NVM_SKU_CAP_11AC_ENABLE = BIT(3),
};
/* radio config bits (actual values from NVM definition) */
@@ -258,8 +259,6 @@
struct iwl_nvm_data *data,
struct ieee80211_sta_vht_cap *vht_cap)
{
- /* For now, assume new devices with NVM are VHT capable */
-
vht_cap->vht_supported = true;
vht_cap->cap = IEEE80211_VHT_CAP_SHORT_GI_80 |
@@ -292,7 +291,8 @@
}
static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
- struct iwl_nvm_data *data, const __le16 *nvm_sw)
+ struct iwl_nvm_data *data, const __le16 *nvm_sw,
+ bool enable_vht)
{
int n_channels = iwl_init_channel_map(dev, cfg, data,
&nvm_sw[NVM_CHANNELS]);
@@ -314,7 +314,8 @@
n_used += iwl_init_sband_channels(data, sband, n_channels,
IEEE80211_BAND_5GHZ);
iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ);
- iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap);
+ if (enable_vht)
+ iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap);
if (n_channels != n_used)
IWL_ERR_DEV(dev, "NVM: used only %d of %d channels\n",
@@ -380,7 +381,8 @@
data->hw_addr[4] = hw_addr[5];
data->hw_addr[5] = hw_addr[4];
- iwl_init_sbands(dev, cfg, data, nvm_sw);
+ iwl_init_sbands(dev, cfg, data, nvm_sw,
+ sku & NVM_SKU_CAP_11AC_ENABLE);
data->calib_version = 255; /* TODO:
this value will prevent some checks from