package/bcm43xx-mac80211/src/bcm43xx/bcm43xx_power.c

   1 /*
   2
   3   Broadcom BCM43xx wireless driver
   4
   5   Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
   6                      Stefano Brivio <st3@riseup.net>
   7                      Michael Buesch <mb@bu3sch.de>
   8                      Danny van Dyk <kugelfang@gentoo.org>
   9                      Andreas Jaggi <andreas.jaggi@waterwave.ch>
  10
  11   Some parts of the code in this file are derived from the ipw2200
  12   driver  Copyright(c) 2003 - 2004 Intel Corporation.
  13
  14   This program is free software; you can redistribute it and/or modify
  15   it under the terms of the GNU General Public License as published by
  16   the Free Software Foundation; either version 2 of the License, or
  17   (at your option) any later version.
  18
  19   This program is distributed in the hope that it will be useful,
  20   but WITHOUT ANY WARRANTY; without even the implied warranty of
  21   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22   GNU General Public License for more details.
  23
  24   You should have received a copy of the GNU General Public License
  25   along with this program; see the file COPYING.  If not, write to
  26   the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  27   Boston, MA 02110-1301, USA.
  28
  29 */
  30
  31 #include <linux/delay.h>
  32
  33 #include "bcm43xx.h"
  34 #include "bcm43xx_power.h"
  35 #include "bcm43xx_main.h"
  36
  37
  38 //TODO Kill this file.
  39
  40 /* Set the PowerSavingControlBits.
  41  * Bitvalues:
  42  *   0  => unset the bit
  43  *   1  => set the bit
  44  *   -1 => calculate the bit
  45  */
  46 void bcm43xx_power_saving_ctl_bits(struct bcm43xx_wldev *dev,
  47                                    int bit25, int bit26)
  48 {
  49         int i;
  50         u32 status;
  51
  52 //FIXME: Force 25 to off and 26 to on for now:
  53 bit25 = 0;
  54 bit26 = 1;
  55
  56         if (bit25 == -1) {
  57                 //TODO: If powersave is not off and FIXME is not set and we are not in adhoc
  58                 //      and thus is not an AP and we are associated, set bit 25
  59         }
  60         if (bit26 == -1) {
  61                 //TODO: If the device is awake or this is an AP, or we are scanning, or FIXME,
  62                 //      or we are associated, or FIXME, or the latest PS-Poll packet sent was
  63                 //      successful, set bit26
  64         }
  65         status = bcm43xx_read32(dev, BCM43xx_MMIO_STATUS_BITFIELD);
  66         if (bit25)
  67                 status |= BCM43xx_SBF_PS1;
  68         else
  69                 status &= ~BCM43xx_SBF_PS1;
  70         if (bit26)
  71                 status |= BCM43xx_SBF_PS2;
  72         else
  73                 status &= ~BCM43xx_SBF_PS2;
  74         bcm43xx_write32(dev, BCM43xx_MMIO_STATUS_BITFIELD, status);
  75         if (bit26 && dev->dev->id.revision >= 5) {
  76                 for (i = 0; i < 100; i++) {
  77                         if (bcm43xx_shm_read32(dev, BCM43xx_SHM_SHARED, 0x0040) != 4)
  78                                 break;
  79                         udelay(10);
  80                 }
  81         }
  82 }