146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/*
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* Copyright (c) 2014 Redpine Signals Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/etherdevice.h>
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#include <linux/if.h>
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#include "rsi_debugfs.h"
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#include "rsi_mgmt.h"
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#include "rsi_common.h"
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#include "rsi_ps.h"
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char *str_psstate(enum ps_state state)
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{
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switch (state) {
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case PS_NONE:
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return "PS_NONE";
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case PS_DISABLE_REQ_SENT:
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return "PS_DISABLE_REQ_SENT";
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case PS_ENABLE_REQ_SENT:
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return "PS_ENABLE_REQ_SENT";
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case PS_ENABLED:
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return "PS_ENABLED";
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default:
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return "INVALID_STATE";
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}
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}
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static inline void rsi_modify_ps_state(struct rsi_hw *adapter,
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enum ps_state nstate)
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{
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rsi_dbg(INFO_ZONE, "PS state changed %s => %s\n",
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str_psstate(adapter->ps_state),
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str_psstate(nstate));
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adapter->ps_state = nstate;
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}
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void rsi_default_ps_params(struct rsi_hw *adapter)
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{
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struct rsi_ps_info *ps_info = &adapter->ps_info;
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ps_info->enabled = true;
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ps_info->sleep_type = RSI_SLEEP_TYPE_LP;
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ps_info->tx_threshold = 0;
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ps_info->rx_threshold = 0;
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ps_info->tx_hysterisis = 0;
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ps_info->rx_hysterisis = 0;
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ps_info->monitor_interval = 0;
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ps_info->listen_interval = RSI_DEF_LISTEN_INTERVAL;
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ps_info->num_bcns_per_lis_int = 0;
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ps_info->dtim_interval_duration = 0;
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ps_info->num_dtims_per_sleep = 0;
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ps_info->deep_sleep_wakeup_period = RSI_DEF_DS_WAKEUP_PERIOD;
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}
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void rsi_enable_ps(struct rsi_hw *adapter, struct ieee80211_vif *vif)
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{
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if (adapter->ps_state != PS_NONE) {
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rsi_dbg(ERR_ZONE,
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"%s: Cannot accept enable PS in %s state\n",
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__func__, str_psstate(adapter->ps_state));
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return;
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}
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if (rsi_send_ps_request(adapter, true, vif)) {
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rsi_dbg(ERR_ZONE,
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"%s: Failed to send PS request to device\n",
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__func__);
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return;
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}
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rsi_modify_ps_state(adapter, PS_ENABLE_REQ_SENT);
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}
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/* This function is used to disable power save */
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void rsi_disable_ps(struct rsi_hw *adapter, struct ieee80211_vif *vif)
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{
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if (adapter->ps_state != PS_ENABLED) {
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rsi_dbg(ERR_ZONE,
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"%s: Cannot accept disable PS in %s state\n",
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__func__, str_psstate(adapter->ps_state));
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return;
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}
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if (rsi_send_ps_request(adapter, false, vif)) {
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rsi_dbg(ERR_ZONE,
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"%s: Failed to send PS request to device\n",
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__func__);
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return;
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}
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rsi_modify_ps_state(adapter, PS_DISABLE_REQ_SENT);
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}
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void rsi_conf_uapsd(struct rsi_hw *adapter, struct ieee80211_vif *vif)
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{
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int ret;
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if (adapter->ps_state != PS_ENABLED)
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return;
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ret = rsi_send_ps_request(adapter, false, vif);
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if (!ret)
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ret = rsi_send_ps_request(adapter, true, vif);
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if (ret)
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rsi_dbg(ERR_ZONE,
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"%s: Failed to send PS request to device\n",
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__func__);
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}
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int rsi_handle_ps_confirm(struct rsi_hw *adapter, u8 *msg)
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{
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u16 cfm_type = get_unaligned_le16(msg + PS_CONFIRM_INDEX);
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switch (cfm_type) {
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case RSI_SLEEP_REQUEST:
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if (adapter->ps_state == PS_ENABLE_REQ_SENT)
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rsi_modify_ps_state(adapter, PS_ENABLED);
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break;
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case RSI_WAKEUP_REQUEST:
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if (adapter->ps_state == PS_DISABLE_REQ_SENT)
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rsi_modify_ps_state(adapter, PS_NONE);
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break;
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default:
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rsi_dbg(ERR_ZONE,
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"Invalid PS confirm type %x in state %s\n",
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cfm_type, str_psstate(adapter->ps_state));
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return -1;
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}
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return 0;
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}
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