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
 
 
21int wcn36xx_pmc_enter_bmps_state(struct wcn36xx *wcn,
22				 struct ieee80211_vif *vif)
23{
24	int ret = 0;
25	struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
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
42int wcn36xx_pmc_exit_bmps_state(struct wcn36xx *wcn,
43				struct ieee80211_vif *vif)
44{
45	struct wcn36xx_vif *vif_priv = (struct wcn36xx_vif *)vif->drv_priv;
46
47	if (WCN36XX_BMPS != vif_priv->pw_state) {
48		wcn36xx_err("Not in BMPS mode, no need to exit from BMPS mode!\n");
49		return -EINVAL;
 
 
50	}
51	wcn36xx_smd_exit_bmps(wcn, vif);
52	vif_priv->pw_state = WCN36XX_FULL_POWER;
 
53	return 0;
54}
55
56int wcn36xx_enable_keep_alive_null_packet(struct wcn36xx *wcn,
57					  struct ieee80211_vif *vif)
58{
59	wcn36xx_dbg(WCN36XX_DBG_PMC, "%s\n", __func__);
60	return wcn36xx_smd_keep_alive_req(wcn, vif,
61					  WCN36XX_HAL_KEEP_ALIVE_NULL_PKT);
62}

 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#define WCN36XX_BMPS_FAIL_THREHOLD 3
22
23int wcn36xx_pmc_enter_bmps_state(struct wcn36xx *wcn,
24				 struct ieee80211_vif *vif)
25{
26	int ret = 0;
27	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
28	/* TODO: Make sure the TX chain clean */
29	ret = wcn36xx_smd_enter_bmps(wcn, vif);
30	if (!ret) {
31		wcn36xx_dbg(WCN36XX_DBG_PMC, "Entered BMPS\n");
32		vif_priv->pw_state = WCN36XX_BMPS;
33		vif_priv->bmps_fail_ct = 0;
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		if (vif_priv->bmps_fail_ct++ == WCN36XX_BMPS_FAIL_THREHOLD) {
44			ieee80211_connection_loss(vif);
45			vif_priv->bmps_fail_ct = 0;
46		}
47	}
48	return ret;
49}
50
51int wcn36xx_pmc_exit_bmps_state(struct wcn36xx *wcn,
52				struct ieee80211_vif *vif)
53{
54	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
55
56	if (WCN36XX_BMPS != vif_priv->pw_state) {
57		/* Unbalanced call or last BMPS enter failed */
58		wcn36xx_dbg(WCN36XX_DBG_PMC,
59			    "Not in BMPS mode, no need to exit\n");
60		return -EALREADY;
61	}
62	wcn36xx_smd_exit_bmps(wcn, vif);
63	vif_priv->pw_state = WCN36XX_FULL_POWER;
64	vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
65	return 0;
66}
67
68int wcn36xx_enable_keep_alive_null_packet(struct wcn36xx *wcn,
69					  struct ieee80211_vif *vif)
70{
71	wcn36xx_dbg(WCN36XX_DBG_PMC, "%s\n", __func__);
72	return wcn36xx_smd_keep_alive_req(wcn, vif,
73					  WCN36XX_HAL_KEEP_ALIVE_NULL_PKT);
74}