[mirror_ubuntu-hirsute-kernel.git] / drivers / net / wireless / ath / wcn36xx / pmc.c

/*
 * 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"

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);

	if (!vif_priv->allow_bmps)
		return -ENOTSUPP;

	ret = wcn36xx_smd_enter_bmps(wcn, vif);
	if (!ret) {
		wcn36xx_dbg(WCN36XX_DBG_PMC, "Entered BMPS\n");
		vif_priv->pw_state = WCN36XX_BMPS;
		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");
	}
	return ret;
}

int wcn36xx_pmc_exit_bmps_state(struct wcn36xx *wcn,
				struct ieee80211_vif *vif)
{
	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);

	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;
}

int wcn36xx_enable_keep_alive_null_packet(struct wcn36xx *wcn,
					  struct ieee80211_vif *vif)
{
	wcn36xx_dbg(WCN36XX_DBG_PMC, "%s\n", __func__);
	return wcn36xx_smd_keep_alive_req(wcn, vif,
					  WCN36XX_HAL_KEEP_ALIVE_NULL_PKT);
}
Commit	Line	Data
8e84c258 EK	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;
ce75877f	25	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
c6522a50 LP	26
	27	if (!vif_priv->allow_bmps)
	28	return -ENOTSUPP;
	29
8e84c258 EK	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;
fd5ad4d1	34	vif->driver_flags \|= IEEE80211_VIF_BEACON_FILTER;
8e84c258 EK	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	{
ce75877f	49	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
8e84c258 EK	50
8e84c258 EK	51	if (WCN36XX_BMPS != vif_priv->pw_state) {
0856655a LP	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;
8e84c258 EK	56	}
	57	wcn36xx_smd_exit_bmps(wcn, vif);
	58	vif_priv->pw_state = WCN36XX_FULL_POWER;
fd5ad4d1	59	vif->driver_flags &= ~IEEE80211_VIF_BEACON_FILTER;
8e84c258 EK	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	}