iwmc3200wifi: Update wireless_mode with eeprom values

The iwmc3200wifi eeprom contains information about the available PHYs on
the chip. We should update our wireless_mode setting and profile according
to it.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 39 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/eeprom.c b/drivers/net/wireless/iwmc3200wifi/eeprom.c
index c574f58dfb20..8091421ee5e5 100644
--- a/drivers/net/wireless/iwmc3200wifi/eeprom.c
+++ b/drivers/net/wireless/iwmc3200wifi/eeprom.c
@@ -176,6 +176,26 @@ int iwm_eeprom_fat_channels(struct iwm_priv *iwm)
         return 0;
 }
 
+u32 iwm_eeprom_wireless_mode(struct iwm_priv *iwm)
+{
+        u16 sku_cap;
+        u32 wireless_mode = 0;
+
+        sku_cap = *((u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_SKU_CAP));
+
+        if (sku_cap & IWM_EEPROM_SKU_CAP_BAND_24GHZ)
+                wireless_mode |= WIRELESS_MODE_11G;
+
+        if (sku_cap & IWM_EEPROM_SKU_CAP_BAND_52GHZ)
+                wireless_mode |= WIRELESS_MODE_11A;
+
+        if (sku_cap & IWM_EEPROM_SKU_CAP_11N_ENABLE)
+                wireless_mode |= WIRELESS_MODE_11N;
+
+        return wireless_mode;
+}
+
+
 int iwm_eeprom_init(struct iwm_priv *iwm)
 {
         int i, ret = 0;
diff --git a/drivers/net/wireless/iwmc3200wifi/eeprom.h b/drivers/net/wireless/iwmc3200wifi/eeprom.h
index 0f7f226916cf..4e3a3fdab0d3 100644
--- a/drivers/net/wireless/iwmc3200wifi/eeprom.h
+++ b/drivers/net/wireless/iwmc3200wifi/eeprom.h
@@ -122,5 +122,6 @@ int iwm_eeprom_init(struct iwm_priv *iwm);
 void iwm_eeprom_exit(struct iwm_priv *iwm);
 u8 *iwm_eeprom_access(struct iwm_priv *iwm, u8 eeprom_id);
 int iwm_eeprom_fat_channels(struct iwm_priv *iwm);
+u32 iwm_eeprom_wireless_mode(struct iwm_priv *iwm);
 
 #endif
diff --git a/drivers/net/wireless/iwmc3200wifi/main.c b/drivers/net/wireless/iwmc3200wifi/main.c
index 365f3fc37d25..e61265af92cd 100644
--- a/drivers/net/wireless/iwmc3200wifi/main.c
+++ b/drivers/net/wireless/iwmc3200wifi/main.c
@@ -80,7 +80,8 @@ static struct iwm_conf def_iwm_conf = {
 
         .assoc_timeout          = 2,
         .roam_timeout           = 10,
-        .wireless_mode          = WIRELESS_MODE_11A | WIRELESS_MODE_11G,
+        .wireless_mode          = WIRELESS_MODE_11A | WIRELESS_MODE_11G |
+                                  WIRELESS_MODE_11N,
         .coexist_mode           = COEX_MODE_CM,
 
         /* IBSS */
@@ -630,6 +631,7 @@ static int __iwm_up(struct iwm_priv *iwm)
         int ret;
         struct iwm_notif *notif_reboot, *notif_ack = NULL;
         struct wiphy *wiphy = iwm_to_wiphy(iwm);
+        u32 wireless_mode;
 
         ret = iwm_bus_enable(iwm);
         if (ret) {
@@ -697,6 +699,21 @@ static int __iwm_up(struct iwm_priv *iwm)
                 goto err_fw;
         }
 
+        /*
+         * Read our SKU capabilities.
+         * If it's valid, we overwrite the wireless mode conf entry and the
+         * current profile one.
+         */
+        wireless_mode = iwm_eeprom_wireless_mode(iwm);
+        if (wireless_mode) {
+                iwm->conf.wireless_mode = wireless_mode;
+                if (iwm->umac_profile)
+                        iwm->umac_profile->wireless_mode =
+                                        iwm->conf.wireless_mode;
+        } else
+                IWM_ERR(iwm, "Wrong SKU capabilities: 0x%x\n",
+                        *((u16 *)iwm_eeprom_access(iwm, IWM_EEPROM_SKU_CAP)));
+
         snprintf(wiphy->fw_version, sizeof(wiphy->fw_version), "L%s_U%s",
                  iwm->lmac_version, iwm->umac_version);