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Commit 2f01a1f5 authored by Kalle Valo's avatar Kalle Valo Committed by John W. Linville
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wl12xx: add driver 

wl12xx is a driver for TI wl1251 802.11 chipset designed for embedded
devices, supporting both SDIO and SPI busses. Currently the driver
supports only SPI. Adding support 1253 (the 5 GHz version) should be
relatively easy. More information here:

http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?contentId=4711&navigationId=12494&templateId=6123



(Collapsed original sequence of pre-merge patches into single commit for
initial merge. -- JWL)

Signed-off-by: default avatarKalle Valo <kalle.valo@nokia.com>
Signed-off-by: default avatarBob Copeland <me@bobcopeland.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent d53d9e67

drivers/net/wireless/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -500,5 +500,6 @@ source "drivers/net/wireless/b43legacy/Kconfig" 
source "drivers/net/wireless/zd1211rw/Kconfig"

source "drivers/net/wireless/rt2x00/Kconfig"

source "drivers/net/wireless/orinoco/Kconfig"

source "drivers/net/wireless/wl12xx/Kconfig"



endmenu

drivers/net/wireless/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -58,3 +58,5 @@ obj-$(CONFIG_P54_COMMON) += p54/ 
obj-$(CONFIG_ATH_COMMON)	+= ath/



obj-$(CONFIG_MAC80211_HWSIM)	+= mac80211_hwsim.o



obj-$(CONFIG_WL12XX)	+= wl12xx/

drivers/net/wireless/wl12xx/Kconfig

0 → 100644
+11 −0
Original line number Diff line number Diff line 
config WL12XX

	tristate "TI wl1251/wl1271 support"

	depends on MAC80211 && WLAN_80211 && SPI_MASTER && EXPERIMENTAL

	select FW_LOADER

	select CRC7

	---help---

	  This module adds support for wireless adapters based on

	  TI wl1251/wl1271 chipsets.



	  If you choose to build a module, it'll be called wl12xx. Say N if

	  unsure.

drivers/net/wireless/wl12xx/Makefile

0 → 100644
+4 −0
Original line number Diff line number Diff line 
wl12xx-objs		= main.o spi.o event.o tx.o rx.o \

			  ps.o cmd.o acx.o boot.o init.o wl1251.o \

			  debugfs.o

obj-$(CONFIG_WL12XX)	+= wl12xx.o

drivers/net/wireless/wl12xx/acx.c

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+689 −0
Original line number Diff line number Diff line 
#include "acx.h"



#include <linux/module.h>

#include <linux/crc7.h>

#include <linux/spi/spi.h>



#include "wl12xx.h"

#include "wl12xx_80211.h"

#include "reg.h"

#include "spi.h"

#include "ps.h"



int wl12xx_acx_frame_rates(struct wl12xx *wl, u8 ctrl_rate, u8 ctrl_mod,

			   u8 mgt_rate, u8 mgt_mod)

{

	int ret;

	struct acx_fw_gen_frame_rates rates;



	wl12xx_debug(DEBUG_ACX, "acx frame rates");



	rates.header.id = ACX_FW_GEN_FRAME_RATES;

	rates.header.len = sizeof(struct acx_fw_gen_frame_rates) -

		sizeof(struct acx_header);



	rates.tx_ctrl_frame_rate = ctrl_rate;

	rates.tx_ctrl_frame_mod = ctrl_mod;

	rates.tx_mgt_frame_rate = mgt_rate;

	rates.tx_mgt_frame_mod = mgt_mod;



	ret = wl12xx_cmd_configure(wl, &rates, sizeof(rates));

	if (ret < 0) {

		wl12xx_error("Failed to set FW rates and modulation");

		return ret;

	}



	return 0;

}





int wl12xx_acx_station_id(struct wl12xx *wl)

{

	int ret, i;

	struct dot11_station_id mac;



	wl12xx_debug(DEBUG_ACX, "acx dot11_station_id");



	mac.header.id = DOT11_STATION_ID;

	mac.header.len = sizeof(mac) - sizeof(struct acx_header);



	for (i = 0; i < ETH_ALEN; i++)

		mac.mac[i] = wl->mac_addr[ETH_ALEN - 1 - i];



	ret = wl12xx_cmd_configure(wl, &mac, sizeof(mac));

	if (ret < 0)

		return ret;



	return 0;

}



int wl12xx_acx_default_key(struct wl12xx *wl, u8 key_id)

{

	struct acx_dot11_default_key default_key;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx dot11_default_key (%d)", key_id);



	default_key.header.id = DOT11_DEFAULT_KEY;

	default_key.header.len = sizeof(default_key) -

		sizeof(struct acx_header);



	default_key.id = key_id;



	ret = wl12xx_cmd_configure(wl, &default_key, sizeof(default_key));

	if (ret < 0) {

		wl12xx_error("Couldnt set default key");

		return ret;

	}



	wl->default_key = key_id;



	return 0;

}



int wl12xx_acx_wake_up_conditions(struct wl12xx *wl, u8 listen_interval)

{

	struct acx_wake_up_condition wake_up;



	wl12xx_debug(DEBUG_ACX, "acx wake up conditions");



	wake_up.header.id = ACX_WAKE_UP_CONDITIONS;

	wake_up.header.len = sizeof(wake_up) - sizeof(struct acx_header);



	wake_up.wake_up_event = WAKE_UP_EVENT_DTIM_BITMAP;

	wake_up.listen_interval = listen_interval;



	return wl12xx_cmd_configure(wl, &wake_up, sizeof(wake_up));

}



int wl12xx_acx_sleep_auth(struct wl12xx *wl, u8 sleep_auth)

{

	int ret;

	struct acx_sleep_auth auth;



	wl12xx_debug(DEBUG_ACX, "acx sleep auth");



	auth.header.id = ACX_SLEEP_AUTH;

	auth.header.len = sizeof(auth) - sizeof(struct acx_header);



	auth.sleep_auth = sleep_auth;



	ret = wl12xx_cmd_configure(wl, &auth, sizeof(auth));

	if (ret < 0)

		return ret;



	return 0;

}



int wl12xx_acx_fw_version(struct wl12xx *wl, char *buf, size_t len)

{

	struct wl12xx_command cmd;

	struct acx_revision *rev;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx fw rev");



	memset(&cmd, 0, sizeof(cmd));



	ret = wl12xx_cmd_interrogate(wl, ACX_FW_REV, sizeof(*rev), &cmd);

	if (ret < 0) {

		wl12xx_warning("ACX_FW_REV interrogate failed");

		return ret;

	}



	rev = (struct acx_revision *) &cmd.parameters;



	/* be careful with the buffer sizes */

	strncpy(buf, rev->fw_version, min(len, sizeof(rev->fw_version)));



	/*

	 * if the firmware version string is exactly

	 * sizeof(rev->fw_version) long or fw_len is less than

	 * sizeof(rev->fw_version) it won't be null terminated

	 */

	buf[min(len, sizeof(rev->fw_version)) - 1] = '\0';



	return 0;

}



int wl12xx_acx_tx_power(struct wl12xx *wl, int power)

{

	struct acx_current_tx_power ie;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx dot11_cur_tx_pwr");



	if (power < 0 || power > 25)

		return -EINVAL;



	memset(&ie, 0, sizeof(ie));



	ie.header.id = DOT11_CUR_TX_PWR;

	ie.header.len = sizeof(ie) - sizeof(struct acx_header);

	ie.current_tx_power = power * 10;



	ret = wl12xx_cmd_configure(wl, &ie, sizeof(ie));

	if (ret < 0) {

		wl12xx_warning("configure of tx power failed: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_feature_cfg(struct wl12xx *wl)

{

	struct acx_feature_config feature;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx feature cfg");



	memset(&feature, 0, sizeof(feature));



	feature.header.id = ACX_FEATURE_CFG;

	feature.header.len = sizeof(feature) - sizeof(struct acx_header);



	/* DF_ENCRYPTION_DISABLE and DF_SNIFF_MODE_ENABLE are disabled */

	feature.data_flow_options = 0;

	feature.options = 0;



	ret = wl12xx_cmd_configure(wl, &feature, sizeof(feature));

	if (ret < 0)

		wl12xx_error("Couldnt set HW encryption");



	return ret;

}



int wl12xx_acx_mem_map(struct wl12xx *wl, void *mem_map, size_t len)

{

	struct wl12xx_command cmd;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx mem map");



	ret = wl12xx_cmd_interrogate(wl, ACX_MEM_MAP, len, &cmd);

	if (ret < 0)

		return ret;

	else if (cmd.status != CMD_STATUS_SUCCESS)

		return -EIO;



	memcpy(mem_map, &cmd.parameters, len);



	return 0;

}



int wl12xx_acx_data_path_params(struct wl12xx *wl,

				struct acx_data_path_params_resp *data_path)

{

	struct acx_data_path_params params;

	struct wl12xx_command cmd;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx data path params");



	params.rx_packet_ring_chunk_size = DP_RX_PACKET_RING_CHUNK_SIZE;

	params.tx_packet_ring_chunk_size = DP_TX_PACKET_RING_CHUNK_SIZE;



	params.rx_packet_ring_chunk_num = DP_RX_PACKET_RING_CHUNK_NUM;

	params.tx_packet_ring_chunk_num = DP_TX_PACKET_RING_CHUNK_NUM;



	params.tx_complete_threshold = 1;



	params.tx_complete_ring_depth = FW_TX_CMPLT_BLOCK_SIZE;



	params.tx_complete_timeout = DP_TX_COMPLETE_TIME_OUT;



	params.header.id = ACX_DATA_PATH_PARAMS;

	params.header.len = sizeof(params) - sizeof(struct acx_header);



	ret = wl12xx_cmd_configure(wl, &params, sizeof(params));

	if (ret < 0)

		return ret;





	ret = wl12xx_cmd_interrogate(wl, ACX_DATA_PATH_PARAMS,

				     sizeof(struct acx_data_path_params_resp),

				     &cmd);



	if (ret < 0) {

		wl12xx_warning("failed to read data path parameters: %d", ret);

		return ret;

	} else if (cmd.status != CMD_STATUS_SUCCESS) {

		wl12xx_warning("data path parameter acx status failed");

		return -EIO;

	}



	memcpy(data_path, &cmd.parameters, sizeof(*data_path));



	return 0;

}



int wl12xx_acx_rx_msdu_life_time(struct wl12xx *wl, u32 life_time)

{

	struct rx_msdu_lifetime msdu_lifetime;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx rx msdu life time");



	msdu_lifetime.header.id = DOT11_RX_MSDU_LIFE_TIME;

	msdu_lifetime.header.len = sizeof(msdu_lifetime) -

		sizeof(struct acx_header);

	msdu_lifetime.lifetime = life_time;



	ret = wl12xx_cmd_configure(wl, &msdu_lifetime, sizeof(msdu_lifetime));

	if (ret < 0) {

		wl12xx_warning("failed to set rx msdu life time: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_rx_config(struct wl12xx *wl, u32 config, u32 filter)

{

	struct acx_rx_config rx_config;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx rx config");



	rx_config.header.id = ACX_RX_CFG;

	rx_config.header.len = sizeof(rx_config) - sizeof(struct acx_header);

	rx_config.config_options = config;

	rx_config.filter_options = filter;



	ret = wl12xx_cmd_configure(wl, &rx_config, sizeof(rx_config));

	if (ret < 0) {

		wl12xx_warning("failed to set rx config: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_pd_threshold(struct wl12xx *wl)

{

	struct acx_packet_detection packet_detection;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx data pd threshold");



	/* FIXME: threshold value not set */

	packet_detection.header.id = ACX_PD_THRESHOLD;

	packet_detection.header.len = sizeof(packet_detection) -

		sizeof(struct acx_header);



	ret = wl12xx_cmd_configure(wl, &packet_detection,

				   sizeof(packet_detection));

	if (ret < 0) {

		wl12xx_warning("failed to set pd threshold: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_slot(struct wl12xx *wl, enum acx_slot_type slot_time)

{

	struct acx_slot slot;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx slot");



	slot.header.id = ACX_SLOT;

	slot.header.len = sizeof(slot) - sizeof(struct acx_header);



	slot.wone_index = STATION_WONE_INDEX;

	slot.slot_time = slot_time;



	ret = wl12xx_cmd_configure(wl, &slot, sizeof(slot));

	if (ret < 0) {

		wl12xx_warning("failed to set slot time: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_group_address_tbl(struct wl12xx *wl)

{

	struct multicast_grp_addr_start multicast;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx group address tbl");



	/* MAC filtering */

	multicast.header.id = DOT11_GROUP_ADDRESS_TBL;

	multicast.header.len = sizeof(multicast) - sizeof(struct acx_header);



	multicast.enabled = 0;

	multicast.num_groups = 0;

	memset(multicast.mac_table, 0, ADDRESS_GROUP_MAX_LEN);



	ret = wl12xx_cmd_configure(wl, &multicast, sizeof(multicast));

	if (ret < 0) {

		wl12xx_warning("failed to set group addr table: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_service_period_timeout(struct wl12xx *wl)

{

	struct acx_rx_timeout rx_timeout;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx service period timeout");



	/* RX timeout */

	rx_timeout.header.id = ACX_SERVICE_PERIOD_TIMEOUT;

	rx_timeout.header.len = sizeof(rx_timeout) - sizeof(struct acx_header);



	rx_timeout.ps_poll_timeout = RX_TIMEOUT_PS_POLL_DEF;

	rx_timeout.upsd_timeout = RX_TIMEOUT_UPSD_DEF;



	ret = wl12xx_cmd_configure(wl, &rx_timeout, sizeof(rx_timeout));

	if (ret < 0) {

		wl12xx_warning("failed to set service period timeout: %d",

			       ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_rts_threshold(struct wl12xx *wl, u16 rts_threshold)

{

	struct acx_rts_threshold rts;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx rts threshold");



	rts.header.id = DOT11_RTS_THRESHOLD;

	rts.header.len = sizeof(rts) - sizeof(struct acx_header);



	rts.threshold = rts_threshold;



	ret = wl12xx_cmd_configure(wl, &rts, sizeof(rts));

	if (ret < 0) {

		wl12xx_warning("failed to set rts threshold: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_beacon_filter_opt(struct wl12xx *wl)

{

	struct acx_beacon_filter_option beacon_filter;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx beacon filter opt");



	beacon_filter.header.id = ACX_BEACON_FILTER_OPT;

	beacon_filter.header.len = sizeof(beacon_filter) -

		sizeof(struct acx_header);



	beacon_filter.enable = 0;

	beacon_filter.max_num_beacons = 0;



	ret = wl12xx_cmd_configure(wl, &beacon_filter, sizeof(beacon_filter));

	if (ret < 0) {

		wl12xx_warning("failed to set beacon filter opt: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_beacon_filter_table(struct wl12xx *wl)

{

	struct acx_beacon_filter_ie_table ie_table;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx beacon filter table");



	ie_table.header.id = ACX_BEACON_FILTER_TABLE;

	ie_table.header.len = sizeof(ie_table) - sizeof(struct acx_header);



	ie_table.num_ie = 0;

	memset(ie_table.table, 0, BEACON_FILTER_TABLE_MAX_SIZE);



	ret = wl12xx_cmd_configure(wl, &ie_table, sizeof(ie_table));

	if (ret < 0) {

		wl12xx_warning("failed to set beacon filter table: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_sg_enable(struct wl12xx *wl)

{

	struct acx_bt_wlan_coex pta;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx sg enable");



	pta.header.id = ACX_SG_ENABLE;

	pta.header.len = sizeof(pta) - sizeof(struct acx_header);



	pta.enable = SG_ENABLE;



	ret = wl12xx_cmd_configure(wl, &pta, sizeof(pta));

	if (ret < 0) {

		wl12xx_warning("failed to set softgemini enable: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_sg_cfg(struct wl12xx *wl)

{

	struct acx_bt_wlan_coex_param param;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx sg cfg");



	/* BT-WLAN coext parameters */

	param.header.id = ACX_SG_CFG;

	param.header.len = sizeof(param) - sizeof(struct acx_header);



	param.min_rate = RATE_INDEX_24MBPS;

	param.bt_hp_max_time = PTA_BT_HP_MAXTIME_DEF;

	param.wlan_hp_max_time = PTA_WLAN_HP_MAX_TIME_DEF;

	param.sense_disable_timer = PTA_SENSE_DISABLE_TIMER_DEF;

	param.rx_time_bt_hp = PTA_PROTECTIVE_RX_TIME_DEF;

	param.tx_time_bt_hp = PTA_PROTECTIVE_TX_TIME_DEF;

	param.rx_time_bt_hp_fast = PTA_PROTECTIVE_RX_TIME_FAST_DEF;

	param.tx_time_bt_hp_fast = PTA_PROTECTIVE_TX_TIME_FAST_DEF;

	param.wlan_cycle_fast = PTA_CYCLE_TIME_FAST_DEF;

	param.bt_anti_starvation_period = PTA_ANTI_STARVE_PERIOD_DEF;

	param.next_bt_lp_packet = PTA_TIMEOUT_NEXT_BT_LP_PACKET_DEF;

	param.wake_up_beacon = PTA_TIME_BEFORE_BEACON_DEF;

	param.hp_dm_max_guard_time = PTA_HPDM_MAX_TIME_DEF;

	param.next_wlan_packet = PTA_TIME_OUT_NEXT_WLAN_DEF;

	param.antenna_type = PTA_ANTENNA_TYPE_DEF;

	param.signal_type = PTA_SIGNALING_TYPE_DEF;

	param.afh_leverage_on = PTA_AFH_LEVERAGE_ON_DEF;

	param.quiet_cycle_num = PTA_NUMBER_QUIET_CYCLE_DEF;

	param.max_cts = PTA_MAX_NUM_CTS_DEF;

	param.wlan_packets_num = PTA_NUMBER_OF_WLAN_PACKETS_DEF;

	param.bt_packets_num = PTA_NUMBER_OF_BT_PACKETS_DEF;

	param.missed_rx_avalanche = PTA_RX_FOR_AVALANCHE_DEF;

	param.wlan_elp_hp = PTA_ELP_HP_DEF;

	param.bt_anti_starvation_cycles = PTA_ANTI_STARVE_NUM_CYCLE_DEF;

	param.ack_mode_dual_ant = PTA_ACK_MODE_DEF;

	param.pa_sd_enable = PTA_ALLOW_PA_SD_DEF;

	param.pta_auto_mode_enable = PTA_AUTO_MODE_NO_CTS_DEF;

	param.bt_hp_respected_num = PTA_BT_HP_RESPECTED_DEF;



	ret = wl12xx_cmd_configure(wl, &param, sizeof(param));

	if (ret < 0) {

		wl12xx_warning("failed to set sg config: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_cca_threshold(struct wl12xx *wl)

{

	struct acx_energy_detection detection;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx cca threshold");



	detection.header.id = ACX_CCA_THRESHOLD;

	detection.header.len = sizeof(detection) - sizeof(struct acx_header);



	detection.rx_cca_threshold = CCA_THRSH_DISABLE_ENERGY_D;

	detection.tx_energy_detection = 0;



	ret = wl12xx_cmd_configure(wl, &detection, sizeof(detection));

	if (ret < 0) {

		wl12xx_warning("failed to set cca threshold: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_bcn_dtim_options(struct wl12xx *wl)

{

	struct acx_beacon_broadcast bb;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx bcn dtim options");



	bb.header.id = ACX_BCN_DTIM_OPTIONS;

	bb.header.len = sizeof(bb) - sizeof(struct acx_header);



	bb.beacon_rx_timeout = BCN_RX_TIMEOUT_DEF_VALUE;

	bb.broadcast_timeout = BROADCAST_RX_TIMEOUT_DEF_VALUE;

	bb.rx_broadcast_in_ps = RX_BROADCAST_IN_PS_DEF_VALUE;

	bb.ps_poll_threshold = CONSECUTIVE_PS_POLL_FAILURE_DEF;



	ret = wl12xx_cmd_configure(wl, &bb, sizeof(bb));

	if (ret < 0) {

		wl12xx_warning("failed to set rx config: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_aid(struct wl12xx *wl, u16 aid)

{

	struct acx_aid acx_aid;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx aid");



	acx_aid.header.id = ACX_AID;

	acx_aid.header.len = sizeof(acx_aid) - sizeof(struct acx_header);



	acx_aid.aid = aid;



	ret = wl12xx_cmd_configure(wl, &acx_aid, sizeof(acx_aid));

	if (ret < 0) {

		wl12xx_warning("failed to set aid: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_event_mbox_mask(struct wl12xx *wl, u32 event_mask)

{

	struct acx_event_mask mask;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx event mbox mask");



	mask.header.id = ACX_EVENT_MBOX_MASK;

	mask.header.len = sizeof(mask) - sizeof(struct acx_header);



	/* high event mask is unused */

	mask.high_event_mask = 0xffffffff;



	mask.event_mask = event_mask;



	ret = wl12xx_cmd_configure(wl, &mask, sizeof(mask));

	if (ret < 0) {

		wl12xx_warning("failed to set aid: %d", ret);

		return ret;

	}



	return 0;

}



int wl12xx_acx_set_preamble(struct wl12xx *wl, enum acx_preamble_type preamble)

{

	struct acx_preamble ie;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx_set_preamble");



	memset(&ie, 0, sizeof(ie));



	ie.header.id = ACX_PREAMBLE_TYPE;

	ie.header.len = sizeof(ie) - sizeof(struct acx_header);

	ie.preamble = preamble;

	ret = wl12xx_cmd_configure(wl, &ie, sizeof(ie));

	if (ret < 0) {

		wl12xx_warning("Setting of preamble failed: %d", ret);

		return ret;

	}

	return 0;

}



int wl12xx_acx_cts_protect(struct wl12xx *wl,

			   enum acx_ctsprotect_type ctsprotect)

{

	struct acx_ctsprotect ie;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx_set_ctsprotect");



	memset(&ie, 0, sizeof(ie));



	ie.header.id = ACX_CTS_PROTECTION;

	ie.header.len = sizeof(ie) - sizeof(struct acx_header);

	ie.ctsprotect = ctsprotect;

	ret = wl12xx_cmd_configure(wl, &ie, sizeof(ie));

	if (ret < 0) {

		wl12xx_warning("Setting of ctsprotect failed: %d", ret);

		return ret;

	}

	return 0;

}



int wl12xx_acx_statistics(struct wl12xx *wl, struct acx_statistics *stats)

{

	struct wl12xx_command *answer;

	int ret;



	wl12xx_debug(DEBUG_ACX, "acx statistics");



	answer = kmalloc(sizeof(*answer), GFP_KERNEL);

	if (!answer) {

		wl12xx_warning("could not allocate memory for acx statistics");

		ret = -ENOMEM;

		goto out;

	}



	ret = wl12xx_cmd_interrogate(wl, ACX_STATISTICS, sizeof(*answer),

				     answer);

	if (ret < 0) {

		wl12xx_warning("acx statistics failed: %d", ret);

		goto out;

	}



	memcpy(stats, answer->parameters, sizeof(*stats));



out:

	kfree(answer);

	return ret;

}