1 /* 2 * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com> 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 18 19 #include "wcn36xx.h" 20 21 int wcn36xx_pmc_enter_bmps_state(struct wcn36xx *wcn, 22 struct ieee80211_vif *vif) 23 { 24 int ret = 0; 25 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 26 27 if (!vif_priv->allow_bmps) 28 return -ENOTSUPP; 29 30 ret = wcn36xx_smd_enter_bmps(wcn, vif); 31 if (!ret) { 32 wcn36xx_dbg(WCN36XX_DBG_PMC, "Entered BMPS\n"); 33 vif_priv->pw_state = WCN36XX_BMPS; 34 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER; 35 } else { 36 /* 37 * One of the reasons why HW will not enter BMPS is because 38 * driver is trying to enter bmps before first beacon was 39 * received just after auth complete 40 */ 41 wcn36xx_err("Can not enter BMPS!\n"); 42 } 43 return ret; 44 } 45 46 int wcn36xx_pmc_exit_bmps_state(struct wcn36xx *wcn, 47 struct ieee80211_vif *vif) 48 { 49 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); 50 51 if (WCN36XX_BMPS != vif_priv->pw_state) { 52 /* Unbalanced call or last BMPS enter failed */ 53 wcn36xx_dbg(WCN36XX_DBG_PMC, 54 "Not in BMPS mode, no need to exit\n"); 55 return -EALREADY; 56 } 57 wcn36xx_smd_exit_bmps(wcn, vif); 58 vif_priv->pw_state = WCN36XX_FULL_POWER; 59 vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER; 60 return 0; 61 } 62 63 int wcn36xx_enable_keep_alive_null_packet(struct wcn36xx *wcn, 64 struct ieee80211_vif *vif) 65 { 66 wcn36xx_dbg(WCN36XX_DBG_PMC, "%s\n", __func__); 67 return wcn36xx_smd_keep_alive_req(wcn, vif, 68 WCN36XX_HAL_KEEP_ALIVE_NULL_PKT); 69 } 70