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path: root/drivers/net/wireless/wl12xx/ps.c
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Diffstat (limited to 'drivers/net/wireless/wl12xx/ps.c')
-rw-r--r--drivers/net/wireless/wl12xx/ps.c254
1 files changed, 0 insertions, 254 deletions
diff --git a/drivers/net/wireless/wl12xx/ps.c b/drivers/net/wireless/wl12xx/ps.c
deleted file mode 100644
index 971f13e792d..00000000000
--- a/drivers/net/wireless/wl12xx/ps.c
+++ /dev/null
@@ -1,254 +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 "reg.h"
-#include "ps.h"
-#include "io.h"
-#include "tx.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)
-{
- 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 (test_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags))
- 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);
- 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);
- 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);
- if (ret < 0)
- return ret;
-
- clear_bit(WL1271_FLAG_PSM, &wl->flags);
- break;
- }
-
- return ret;
-}
-
-static void wl1271_ps_filter_frames(struct wl1271 *wl, u8 hlid)
-{
- int i, filtered = 0;
- struct sk_buff *skb;
- struct ieee80211_tx_info *info;
- unsigned long flags;
-
- /* filter all frames currently the low level queus for this hlid */
- for (i = 0; i < NUM_TX_QUEUES; i++) {
- while ((skb = skb_dequeue(&wl->links[hlid].tx_queue[i]))) {
- info = IEEE80211_SKB_CB(skb);
- info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
- info->status.rates[0].idx = -1;
- ieee80211_tx_status(wl->hw, skb);
- filtered++;
- }
- }
-
- spin_lock_irqsave(&wl->wl_lock, flags);
- wl->tx_queue_count -= filtered;
- spin_unlock_irqrestore(&wl->wl_lock, flags);
-
- wl1271_handle_tx_low_watermark(wl);
-}
-
-void wl1271_ps_link_start(struct wl1271 *wl, u8 hlid, bool clean_queues)
-{
- struct ieee80211_sta *sta;
-
- if (test_bit(hlid, &wl->ap_ps_map))
- return;
-
- wl1271_debug(DEBUG_PSM, "start mac80211 PSM on hlid %d blks %d "
- "clean_queues %d", hlid, wl->links[hlid].allocated_blks,
- clean_queues);
-
- rcu_read_lock();
- sta = ieee80211_find_sta(wl->vif, wl->links[hlid].addr);
- if (!sta) {
- wl1271_error("could not find sta %pM for starting ps",
- wl->links[hlid].addr);
- rcu_read_unlock();
- return;
- }
-
- ieee80211_sta_ps_transition_ni(sta, true);
- rcu_read_unlock();
-
- /* do we want to filter all frames from this link's queues? */
- if (clean_queues)
- wl1271_ps_filter_frames(wl, hlid);
-
- __set_bit(hlid, &wl->ap_ps_map);
-}
-
-void wl1271_ps_link_end(struct wl1271 *wl, u8 hlid)
-{
- struct ieee80211_sta *sta;
-
- if (!test_bit(hlid, &wl->ap_ps_map))
- return;
-
- wl1271_debug(DEBUG_PSM, "end mac80211 PSM on hlid %d", hlid);
-
- __clear_bit(hlid, &wl->ap_ps_map);
-
- rcu_read_lock();
- sta = ieee80211_find_sta(wl->vif, wl->links[hlid].addr);
- if (!sta) {
- wl1271_error("could not find sta %pM for ending ps",
- wl->links[hlid].addr);
- goto end;
- }
-
- ieee80211_sta_ps_transition_ni(sta, false);
-end:
- rcu_read_unlock();
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-13 15:52:29 +0000