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Release 4.14 drivers/net/wireless/rsi/rsi_91x_ps.c

/**
 * Copyright (c) 2014 Redpine Signals Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/etherdevice.h>
#include <linux/if.h>
#include <linux/version.h>
#include "rsi_debugfs.h"
#include "rsi_mgmt.h"
#include "rsi_common.h"
#include "rsi_ps.h"


char *str_psstate(enum ps_state state) { switch (state) { case PS_NONE: return "PS_NONE"; case PS_DISABLE_REQ_SENT: return "PS_DISABLE_REQ_SENT"; case PS_ENABLE_REQ_SENT: return "PS_ENABLE_REQ_SENT"; case PS_ENABLED: return "PS_ENABLED"; default: return "INVALID_STATE"; } return "INVALID_STATE"; }

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static inline void rsi_modify_ps_state(struct rsi_hw *adapter, enum ps_state nstate) { rsi_dbg(INFO_ZONE, "PS state changed %s => %s\n", str_psstate(adapter->ps_state), str_psstate(nstate)); adapter->ps_state = nstate; }

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void rsi_default_ps_params(struct rsi_hw *adapter) { struct rsi_ps_info *ps_info = &adapter->ps_info; ps_info->enabled = true; ps_info->sleep_type = RSI_SLEEP_TYPE_LP; ps_info->tx_threshold = 0; ps_info->rx_threshold = 0; ps_info->tx_hysterisis = 0; ps_info->rx_hysterisis = 0; ps_info->monitor_interval = 0; ps_info->listen_interval = RSI_DEF_LISTEN_INTERVAL; ps_info->num_bcns_per_lis_int = 0; ps_info->dtim_interval_duration = 0; ps_info->num_dtims_per_sleep = 0; ps_info->deep_sleep_wakeup_period = RSI_DEF_DS_WAKEUP_PERIOD; }

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void rsi_enable_ps(struct rsi_hw *adapter) { if (adapter->ps_state != PS_NONE) { rsi_dbg(ERR_ZONE, "%s: Cannot accept enable PS in %s state\n", __func__, str_psstate(adapter->ps_state)); return; } if (rsi_send_ps_request(adapter, true)) { rsi_dbg(ERR_ZONE, "%s: Failed to send PS request to device\n", __func__); return; } rsi_modify_ps_state(adapter, PS_ENABLE_REQ_SENT); }

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void rsi_disable_ps(struct rsi_hw *adapter) { if (adapter->ps_state != PS_ENABLED) { rsi_dbg(ERR_ZONE, "%s: Cannot accept disable PS in %s state\n", __func__, str_psstate(adapter->ps_state)); return; } if (rsi_send_ps_request(adapter, false)) { rsi_dbg(ERR_ZONE, "%s: Failed to send PS request to device\n", __func__); return; } rsi_modify_ps_state(adapter, PS_DISABLE_REQ_SENT); }

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void rsi_conf_uapsd(struct rsi_hw *adapter) { int ret; if (adapter->ps_state != PS_ENABLED) return; ret = rsi_send_ps_request(adapter, false); if (!ret) ret = rsi_send_ps_request(adapter, true); if (ret) rsi_dbg(ERR_ZONE, "%s: Failed to send PS request to device\n", __func__); }

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int rsi_handle_ps_confirm(struct rsi_hw *adapter, u8 *msg) { u16 cfm_type = get_unaligned_le16(msg + PS_CONFIRM_INDEX); switch (cfm_type) { case RSI_SLEEP_REQUEST: if (adapter->ps_state == PS_ENABLE_REQ_SENT) rsi_modify_ps_state(adapter, PS_ENABLED); break; case RSI_WAKEUP_REQUEST: if (adapter->ps_state == PS_DISABLE_REQ_SENT) rsi_modify_ps_state(adapter, PS_NONE); break; default: rsi_dbg(ERR_ZONE, "Invalid PS confirm type %x in state %s\n", cfm_type, str_psstate(adapter->ps_state)); return -1; } return 0; }

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