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 /* TODO: Make sure the TX chain clean */
27 ret = wcn36xx_smd_enter_bmps(wcn, vif);
28 if (!ret) {
29 wcn36xx_dbg(WCN36XX_DBG_PMC, "Entered BMPS\n");
30 vif_priv->pw_state = WCN36XX_BMPS;
31 } else {
32 /*
33 * One of the reasons why HW will not enter BMPS is because
34 * driver is trying to enter bmps before first beacon was
35 * received just after auth complete
36 */
37 wcn36xx_err("Can not enter BMPS!\n");
38 }
39 return ret;
40 }
41
42 int wcn36xx_pmc_exit_bmps_state(struct wcn36xx *wcn,
43 struct ieee80211_vif *vif)
44 {
45 struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
46
47 if (WCN36XX_BMPS != vif_priv->pw_state) {
48 /* Unbalanced call or last BMPS enter failed */
49 wcn36xx_dbg(WCN36XX_DBG_PMC,
50 "Not in BMPS mode, no need to exit\n");
51 return -EALREADY;
52 }
53 wcn36xx_smd_exit_bmps(wcn, vif);
54 vif_priv->pw_state = WCN36XX_FULL_POWER;
55 return 0;
56 }
57
58 int wcn36xx_enable_keep_alive_null_packet(struct wcn36xx *wcn,
59 struct ieee80211_vif *vif)
60 {
61 wcn36xx_dbg(WCN36XX_DBG_PMC, "%s\n", __func__);
62 return wcn36xx_smd_keep_alive_req(wcn, vif,
63 WCN36XX_HAL_KEEP_ALIVE_NULL_PKT);
64 }