/* * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com> * * 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include"wcn36xx.h"
#define WCN36XX_BMPS_FAIL_THREHOLD 3
int wcn36xx_pmc_enter_bmps_state(struct wcn36xx *wcn, struct ieee80211_vif *vif)
{ int ret = 0; struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif); /* TODO: Make sure the TX chain clean */
ret = wcn36xx_smd_enter_bmps(wcn, vif); if (!ret) {
wcn36xx_dbg(WCN36XX_DBG_PMC, "Entered BMPS\n");
vif_priv->pw_state = WCN36XX_BMPS;
vif_priv->bmps_fail_ct = 0;
vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;
} else { /* * One of the reasons why HW will not enter BMPS is because * driver is trying to enter bmps before first beacon was * received just after auth complete
*/
wcn36xx_err("Can not enter BMPS!\n");
if (WCN36XX_BMPS != vif_priv->pw_state) { /* Unbalanced call or last BMPS enter failed */
wcn36xx_dbg(WCN36XX_DBG_PMC, "Not in BMPS mode, no need to exit\n"); return -EALREADY;
}
wcn36xx_smd_exit_bmps(wcn, vif);
vif_priv->pw_state = WCN36XX_FULL_POWER;
vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER; return 0;
}
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