diff options
Diffstat (limited to 'drivers/net/wireless/rsi/rsi_91x_ps.c')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_91x_ps.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_ps.c b/drivers/net/wireless/rsi/rsi_91x_ps.c new file mode 100644 index 0000000..01472fa --- /dev/null +++ b/drivers/net/wireless/rsi/rsi_91x_ps.c @@ -0,0 +1,146 @@ +/** + * 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"; + } +} + +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; +} + +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; +} + +void rsi_enable_ps(struct rsi_hw *adapter, struct ieee80211_vif *vif) +{ + 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, vif)) { + rsi_dbg(ERR_ZONE, + "%s: Failed to send PS request to device\n", + __func__); + return; + } + + rsi_modify_ps_state(adapter, PS_ENABLE_REQ_SENT); +} + +/* This function is used to disable power save */ +void rsi_disable_ps(struct rsi_hw *adapter, struct ieee80211_vif *vif) +{ + 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, vif)) { + rsi_dbg(ERR_ZONE, + "%s: Failed to send PS request to device\n", + __func__); + return; + } + + rsi_modify_ps_state(adapter, PS_DISABLE_REQ_SENT); +} + +void rsi_conf_uapsd(struct rsi_hw *adapter, struct ieee80211_vif *vif) +{ + int ret; + + if (adapter->ps_state != PS_ENABLED) + return; + + ret = rsi_send_ps_request(adapter, false, vif); + if (!ret) + ret = rsi_send_ps_request(adapter, true, vif); + if (ret) + rsi_dbg(ERR_ZONE, + "%s: Failed to send PS request to device\n", + __func__); +} + +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; +} + |