package/mac80211/patches/309-rt2x00-Add-powersaving-support-rt2800usb.patch

   1 From fa9b7fc2e662e086a7c0e045e541f773bf34c555 Mon Sep 17 00:00:00 2001
   2 From: Ivo van Doorn <IvDoorn@gmail.com>
   3 Date: Sat, 10 Jan 2009 14:31:00 +0100
   4 Subject: [PATCH] rt2x00: Add powersaving support (rt2800usb)
   5
   6 Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
   7 ---
   8  drivers/net/wireless/rt2x00/rt2800usb.c |   36 ++++++++++++++++++++++++++++++-
   9  1 files changed, 35 insertions(+), 1 deletions(-)
  10
  11 --- a/drivers/net/wireless/rt2x00/rt2800usb.c
  12 +++ b/drivers/net/wireless/rt2x00/rt2800usb.c
  13 @@ -860,6 +860,36 @@ static void rt2800usb_config_duration(st
  14         rt2x00usb_register_write(rt2x00dev, BCN_TIME_CFG, reg);
  15  }
  16
  17 +static void rt2800usb_config_ps(struct rt2x00_dev *rt2x00dev,
  18 +                               struct rt2x00lib_conf *libconf)
  19 +{
  20 +       enum dev_state state =
  21 +           (libconf->conf->flags & IEEE80211_CONF_PS) ?
  22 +               STATE_SLEEP : STATE_AWAKE;
  23 +       u32 reg;
  24 +
  25 +       if (state == STATE_SLEEP) {
  26 +               rt2x00usb_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0);
  27 +
  28 +               rt2x00usb_register_read(rt2x00dev, AUTOWAKEUP_CFG, &reg);
  29 +               rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTO_LEAD_TIME, 5);
  30 +               rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_TBCN_BEFORE_WAKE,
  31 +                                  libconf->conf->listen_interval - 1);
  32 +               rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTOWAKE, 1);
  33 +               rt2x00usb_register_write(rt2x00dev, AUTOWAKEUP_CFG, reg);
  34 +
  35 +               rt2800usb_mcu_request(rt2x00dev, MCU_SLEEP, 0xff, 0, 0);
  36 +       } else {
  37 +               rt2800usb_mcu_request(rt2x00dev, MCU_WAKEUP, 0xff, 0, 0);
  38 +
  39 +               rt2x00usb_register_read(rt2x00dev, AUTOWAKEUP_CFG, &reg);
  40 +               rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTO_LEAD_TIME, 0);
  41 +               rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_TBCN_BEFORE_WAKE, 0);
  42 +               rt2x00_set_field32(&reg, AUTOWAKEUP_CFG_AUTOWAKE, 0);
  43 +               rt2x00usb_register_write(rt2x00dev, AUTOWAKEUP_CFG, reg);
  44 +       }
  45 +}
  46 +
  47  static void rt2800usb_config(struct rt2x00_dev *rt2x00dev,
  48                              struct rt2x00lib_conf *libconf,
  49                              const unsigned int flags)
  50 @@ -876,6 +906,8 @@ static void rt2800usb_config(struct rt2x
  51                 rt2800usb_config_retry_limit(rt2x00dev, libconf);
  52         if (flags & IEEE80211_CONF_CHANGE_BEACON_INTERVAL)
  53                 rt2800usb_config_duration(rt2x00dev, libconf);
  54 +       if (flags & IEEE80211_CONF_CHANGE_PS)
  55 +               rt2800usb_config_ps(rt2x00dev, libconf);
  56  }
  57
  58  /*
  59 @@ -2112,7 +2144,9 @@ static int rt2800usb_probe_hw_mode(struc
  60          */
  61         rt2x00dev->hw->flags =
  62             IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
  63 -           IEEE80211_HW_SIGNAL_DBM;
  64 +           IEEE80211_HW_SIGNAL_DBM |
  65 +           IEEE80211_HW_SUPPORTS_PS |
  66 +           IEEE80211_HW_PS_NULLFUNC_STACK;
  67         rt2x00dev->hw->extra_tx_headroom = TXD_DESC_SIZE + TXINFO_DESC_SIZE;
  68
  69         SET_IEEE80211_DEV(rt2x00dev->hw, rt2x00dev->dev);