drivers/net/wireless/ti/wl18xx/cmd.c

   1 /*
   2  * This file is part of wl18xx
   3  *
   4  * Copyright (C) 2011 Texas Instruments Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include "../wlcore/cmd.h"
  23 #include "../wlcore/debug.h"
  24 #include "../wlcore/hw_ops.h"
  25
  26 #include "cmd.h"
  27
  28 int wl18xx_cmd_channel_switch(struct wl1271 *wl,
  29                               struct wl12xx_vif *wlvif,
  30                               struct ieee80211_channel_switch *ch_switch)
  31 {
  32         struct wl18xx_cmd_channel_switch *cmd;
  33         u32 supported_rates;
  34         int ret;
  35
  36         wl1271_debug(DEBUG_ACX, "cmd channel switch");
  37
  38         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
  39         if (!cmd) {
  40                 ret = -ENOMEM;
  41                 goto out;
  42         }
  43
  44         cmd->role_id = wlvif->role_id;
  45         cmd->channel = ch_switch->chandef.chan->hw_value;
  46         cmd->switch_time = ch_switch->count;
  47         cmd->stop_tx = ch_switch->block_tx;
  48
  49         switch (ch_switch->chandef.chan->band) {
  50         case IEEE80211_BAND_2GHZ:
  51                 cmd->band = WLCORE_BAND_2_4GHZ;
  52                 break;
  53         case IEEE80211_BAND_5GHZ:
  54                 cmd->band = WLCORE_BAND_5GHZ;
  55                 break;
  56         default:
  57                 wl1271_error("invalid channel switch band: %d",
  58                              ch_switch->chandef.chan->band);
  59                 ret = -EINVAL;
  60                 goto out_free;
  61         }
  62
  63         supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES |
  64                           wlcore_hw_sta_get_ap_rate_mask(wl, wlvif);
  65         if (wlvif->p2p)
  66                 supported_rates &= ~CONF_TX_CCK_RATES;
  67         cmd->local_supported_rates = cpu_to_le32(supported_rates);
  68         cmd->channel_type = wlvif->channel_type;
  69
  70         ret = wl1271_cmd_send(wl, CMD_CHANNEL_SWITCH, cmd, sizeof(*cmd), 0);
  71         if (ret < 0) {
  72                 wl1271_error("failed to send channel switch command");
  73                 goto out_free;
  74         }
  75
  76 out_free:
  77         kfree(cmd);
  78 out:
  79         return ret;
  80 }