diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_ps.c')
| -rw-r--r-- | drivers/net/wireless/wl12xx/wl1271_ps.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_ps.c b/drivers/net/wireless/wl12xx/wl1271_ps.c deleted file mode 100644 index e3c332e2f97..00000000000 --- a/drivers/net/wireless/wl12xx/wl1271_ps.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * This file is part of wl1271 - * - * Copyright (C) 2008-2009 Nokia Corporation - * - * Contact: Luciano Coelho <luciano.coelho@nokia.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - * - */ - -#include "wl1271_reg.h" -#include "wl1271_ps.h" -#include "wl1271_io.h" - -#define WL1271_WAKEUP_TIMEOUT 500 - -void wl1271_elp_work(struct work_struct *work) -{ - struct delayed_work *dwork; - struct wl1271 *wl; - - dwork = container_of(work, struct delayed_work, work); - wl = container_of(dwork, struct wl1271, elp_work); - - wl1271_debug(DEBUG_PSM, "elp work"); - - mutex_lock(&wl->mutex); - - if (unlikely(wl->state == WL1271_STATE_OFF)) - goto out; - - if (test_bit(WL1271_FLAG_IN_ELP, &wl->flags) || - (!test_bit(WL1271_FLAG_PSM, &wl->flags) && - !test_bit(WL1271_FLAG_IDLE, &wl->flags))) - goto out; - - wl1271_debug(DEBUG_PSM, "chip to elp"); - wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, ELPCTRL_SLEEP); - set_bit(WL1271_FLAG_IN_ELP, &wl->flags); - -out: - mutex_unlock(&wl->mutex); -} - -#define ELP_ENTRY_DELAY 5 - -/* Routines to toggle sleep mode while in ELP */ -void wl1271_ps_elp_sleep(struct wl1271 *wl) -{ - if (test_bit(WL1271_FLAG_PSM, &wl->flags) || - test_bit(WL1271_FLAG_IDLE, &wl->flags)) { - cancel_delayed_work(&wl->elp_work); - ieee80211_queue_delayed_work(wl->hw, &wl->elp_work, - msecs_to_jiffies(ELP_ENTRY_DELAY)); - } -} - -int wl1271_ps_elp_wakeup(struct wl1271 *wl, bool chip_awake) -{ - DECLARE_COMPLETION_ONSTACK(compl); - unsigned long flags; - int ret; - u32 start_time = jiffies; - bool pending = false; - - if (!test_bit(WL1271_FLAG_IN_ELP, &wl->flags)) - return 0; - - wl1271_debug(DEBUG_PSM, "waking up chip from elp"); - - /* - * The spinlock is required here to synchronize both the work and - * the completion variable in one entity. - */ - spin_lock_irqsave(&wl->wl_lock, flags); - if (work_pending(&wl->irq_work) || chip_awake) - pending = true; - else - wl->elp_compl = &compl; - spin_unlock_irqrestore(&wl->wl_lock, flags); - - wl1271_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, ELPCTRL_WAKE_UP); - - if (!pending) { - ret = wait_for_completion_timeout( - &compl, msecs_to_jiffies(WL1271_WAKEUP_TIMEOUT)); - if (ret == 0) { - wl1271_error("ELP wakeup timeout!"); - ieee80211_queue_work(wl->hw, &wl->recovery_work); - ret = -ETIMEDOUT; - goto err; - } else if (ret < 0) { - wl1271_error("ELP wakeup completion error."); - goto err; - } - } - - clear_bit(WL1271_FLAG_IN_ELP, &wl->flags); - - wl1271_debug(DEBUG_PSM, "wakeup time: %u ms", - jiffies_to_msecs(jiffies - start_time)); - goto out; - -err: - spin_lock_irqsave(&wl->wl_lock, flags); - wl->elp_compl = NULL; - spin_unlock_irqrestore(&wl->wl_lock, flags); - return ret; - -out: - return 0; -} - -int wl1271_ps_set_mode(struct wl1271 *wl, enum wl1271_cmd_ps_mode mode, - u32 rates, bool send) -{ - int ret; - - switch (mode) { - case STATION_POWER_SAVE_MODE: - wl1271_debug(DEBUG_PSM, "entering psm"); - - ret = wl1271_acx_wake_up_conditions(wl); - if (ret < 0) { - wl1271_error("couldn't set wake up conditions"); - return ret; - } - - ret = wl1271_cmd_ps_mode(wl, STATION_POWER_SAVE_MODE, - rates, send); - if (ret < 0) - return ret; - - set_bit(WL1271_FLAG_PSM, &wl->flags); - break; - case STATION_ACTIVE_MODE: - default: - wl1271_debug(DEBUG_PSM, "leaving psm"); - ret = wl1271_ps_elp_wakeup(wl, false); - if (ret < 0) - return ret; - - /* disable beacon early termination */ - ret = wl1271_acx_bet_enable(wl, false); - if (ret < 0) - return ret; - - /* disable beacon filtering */ - ret = wl1271_acx_beacon_filter_opt(wl, false); - if (ret < 0) - return ret; - - ret = wl1271_cmd_ps_mode(wl, STATION_ACTIVE_MODE, - rates, send); - if (ret < 0) - return ret; - - clear_bit(WL1271_FLAG_PSM, &wl->flags); - break; - } - - return ret; -} - - |