drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c - nest-learning-thermostat/6.0/linux-imx-4.9.88 - Git at Google

 /*
  * Copyright (c) 2010 Broadcom Corporation
  *
  * 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.
  */

 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/netdevice.h>
 #include <linux/module.h>
 #include <brcmu_wifi.h>
 #include <brcmu_utils.h>
 #include "core.h"
 #include "bus.h"
 #include "debug.h"
 #include "fwil.h"
 #include "fwil_types.h"
 #include "tracepoint.h"
 #include "common.h"
 #include "of.h"

 MODULE_AUTHOR("Broadcom Corporation");
 MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
 MODULE_LICENSE("Dual BSD/GPL");

 const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME	40
 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME	40

 /* default boost value for RSSI_DELTA in preferred join selection */
 #define BRCMF_JOIN_PREF_RSSI_BOOST	8

 #define BRCMF_DEFAULT_TXGLOM_SIZE	32  /* max tx frames in glom chain */

 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
 MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]");

 /* Debug level configuration. See debug.h for bits, sysfs modifiable */
 int brcmf_msg_level;
 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
 MODULE_PARM_DESC(debug, "Level of debug output");

 static int brcmf_p2p_enable;
 module_param_named(p2pon, brcmf_p2p_enable, int, 0);
 MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality");

 static int brcmf_feature_disable;
 module_param_named(feature_disable, brcmf_feature_disable, int, 0);
 MODULE_PARM_DESC(feature_disable, "Disable features");

 static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN];
 module_param_string(alternative_fw_path, brcmf_firmware_path,
 		    BRCMF_FW_ALTPATH_LEN, S_IRUSR);
 MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path");

 static int brcmf_fcmode;
 module_param_named(fcmode, brcmf_fcmode, int, 0);
 MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control");

 static int brcmf_roamoff;
 module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR);
 MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine");

 #ifdef DEBUG
 /* always succeed brcmf_bus_start() */
 static int brcmf_ignore_probe_fail;
 module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0);
 MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging");
 #endif

 static struct brcmfmac_platform_data *brcmfmac_pdata;
 struct brcmf_mp_global_t brcmf_mp_global;

 void brcmf_c_set_joinpref_default(struct brcmf_if *ifp)
 {
 	struct brcmf_join_pref_params join_pref_params[2];
 	int err;

 	/* Setup join_pref to select target by RSSI (boost on 5GHz) */
 	join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA;
 	join_pref_params[0].len = 2;
 	join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST;
 	join_pref_params[0].band = WLC_BAND_5G;

 	join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI;
 	join_pref_params[1].len = 2;
 	join_pref_params[1].rssi_gain = 0;
 	join_pref_params[1].band = 0;
 	err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params,
 				       sizeof(join_pref_params));
 	if (err)
 		brcmf_err("Set join_pref error (%d)\n", err);
 }

 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
 {
 	s8 eventmask[BRCMF_EVENTING_MASK_LEN];
 	u8 buf[BRCMF_DCMD_SMLEN];
 	struct brcmf_rev_info_le revinfo;
 	struct brcmf_rev_info *ri;
 	char *ptr;
 	s32 err;

 	/* retreive mac address */
 	err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,
 				       sizeof(ifp->mac_addr));
 	if (err < 0) {
 		brcmf_err("Retreiving cur_etheraddr failed, %d\n", err);
 		goto done;
 	}
 	memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac));

 	err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO,
 				     &revinfo, sizeof(revinfo));
 	ri = &ifp->drvr->revinfo;
 	if (err < 0) {
 		brcmf_err("retrieving revision info failed, %d\n", err);
 	} else {
 		ri->vendorid = le32_to_cpu(revinfo.vendorid);
 		ri->deviceid = le32_to_cpu(revinfo.deviceid);
 		ri->radiorev = le32_to_cpu(revinfo.radiorev);
 		ri->chiprev = le32_to_cpu(revinfo.chiprev);
 		ri->corerev = le32_to_cpu(revinfo.corerev);
 		ri->boardid = le32_to_cpu(revinfo.boardid);
 		ri->boardvendor = le32_to_cpu(revinfo.boardvendor);
 		ri->boardrev = le32_to_cpu(revinfo.boardrev);
 		ri->driverrev = le32_to_cpu(revinfo.driverrev);
 		ri->ucoderev = le32_to_cpu(revinfo.ucoderev);
 		ri->bus = le32_to_cpu(revinfo.bus);
 		ri->chipnum = le32_to_cpu(revinfo.chipnum);
 		ri->phytype = le32_to_cpu(revinfo.phytype);
 		ri->phyrev = le32_to_cpu(revinfo.phyrev);
 		ri->anarev = le32_to_cpu(revinfo.anarev);
 		ri->chippkg = le32_to_cpu(revinfo.chippkg);
 		ri->nvramrev = le32_to_cpu(revinfo.nvramrev);
 	}
 	ri->result = err;

 	/* query for 'ver' to get version info from firmware */
 	memset(buf, 0, sizeof(buf));
 	strcpy(buf, "ver");
 	err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf));
 	if (err < 0) {
 		brcmf_err("Retreiving version information failed, %d\n",
 			  err);
 		goto done;
 	}
 	ptr = (char *)buf;
 	strsep(&ptr, "\n");

 	/* Print fw version info */
 	brcmf_err("Firmware version = %s\n", buf);

 	/* locate firmware version number for ethtool */
 	ptr = strrchr(buf, ' ') + 1;
 	strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver));

 	/* set mpc */
 	err = brcmf_fil_iovar_int_set(ifp, "mpc", 1);
 	if (err) {
 		brcmf_err("failed setting mpc\n");
 		goto done;
 	}

 	brcmf_c_set_joinpref_default(ifp);

 	/* Setup event_msgs, enable E_IF */
 	err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask,
 				       BRCMF_EVENTING_MASK_LEN);
 	if (err) {
 		brcmf_err("Get event_msgs error (%d)\n", err);
 		goto done;
 	}
 	setbit(eventmask, BRCMF_E_IF);
 	err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask,
 				       BRCMF_EVENTING_MASK_LEN);
 	if (err) {
 		brcmf_err("Set event_msgs error (%d)\n", err);
 		goto done;
 	}

 	/* Setup default scan channel time */
 	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME,
 				    BRCMF_DEFAULT_SCAN_CHANNEL_TIME);
 	if (err) {
 		brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n",
 			  err);
 		goto done;
 	}

 	/* Setup default scan unassoc time */
 	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME,
 				    BRCMF_DEFAULT_SCAN_UNASSOC_TIME);
 	if (err) {
 		brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n",
 			  err);
 		goto done;
 	}

 	/* Enable tx beamforming, errors can be ignored (not supported) */
 	(void)brcmf_fil_iovar_int_set(ifp, "txbf", 1);

 	/* do bus specific preinit here */
 	err = brcmf_bus_preinit(ifp->drvr->bus_if);
 done:
 	return err;
 }

 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG)
 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...)
 {
 	struct va_format vaf = {
 		.fmt = fmt,
 	};
 	va_list args;

 	va_start(args, fmt);
 	vaf.va = &args;
 	if (brcmf_msg_level & level)
 		pr_debug("%s %pV", func, &vaf);
 	trace_brcmf_dbg(level, func, &vaf);
 	va_end(args);
 }
 #endif

 static void brcmf_mp_attach(void)
 {
 	/* If module param firmware path is set then this will always be used,
 	 * if not set then if available use the platform data version. To make
 	 * sure it gets initialized at all, always copy the module param version
 	 */
 	strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path,
 		BRCMF_FW_ALTPATH_LEN);
 	if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) &&
 	    (brcmf_mp_global.firmware_path[0] == '\0')) {
 		strlcpy(brcmf_mp_global.firmware_path,
 			brcmfmac_pdata->fw_alternative_path,
 			BRCMF_FW_ALTPATH_LEN);
 	}
 }

 struct brcmf_mp_device *brcmf_get_module_param(struct device *dev,
 					       enum brcmf_bus_type bus_type,
 					       u32 chip, u32 chiprev)
 {
 	struct brcmf_mp_device *settings;
 	struct brcmfmac_pd_device *device_pd;
 	bool found;
 	int i;

 	brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip,
 		  chiprev);
 	settings = kzalloc(sizeof(*settings), GFP_ATOMIC);
 	if (!settings)
 		return NULL;

 	/* start by using the module paramaters */
 	settings->p2p_enable = !!brcmf_p2p_enable;
 	settings->feature_disable = brcmf_feature_disable;
 	settings->fcmode = brcmf_fcmode;
 	settings->roamoff = !!brcmf_roamoff;
 #ifdef DEBUG
 	settings->ignore_probe_fail = !!brcmf_ignore_probe_fail;
 #endif

 	if (bus_type == BRCMF_BUSTYPE_SDIO)
 		settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz;

 	/* See if there is any device specific platform data configured */
 	found = false;
 	if (brcmfmac_pdata) {
 		for (i = 0; i < brcmfmac_pdata->device_count; i++) {
 			device_pd = &brcmfmac_pdata->devices[i];
 			if ((device_pd->bus_type == bus_type) &&
 			    (device_pd->id == chip) &&
 			    ((device_pd->rev == chiprev) ||
 			     (device_pd->rev == -1))) {
 				brcmf_dbg(INFO, "Platform data for device found\n");
 				settings->country_codes =
 						device_pd->country_codes;
 				if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO)
 					memcpy(&settings->bus.sdio,
 					       &device_pd->bus.sdio,
 					       sizeof(settings->bus.sdio));
 				found = true;
 				break;
 			}
 		}
 	}
 	if ((bus_type == BRCMF_BUSTYPE_SDIO) && (!found)) {
 		/* No platform data for this device. In case of SDIO try OF
 		 * (Open Firwmare) Device Tree.
 		 */
 		brcmf_of_probe(dev, &settings->bus.sdio);
 	}
 	return settings;
 }

 void brcmf_release_module_param(struct brcmf_mp_device *module_param)
 {
 	kfree(module_param);
 }

 static int __init brcmf_common_pd_probe(struct platform_device *pdev)
 {
 	brcmf_dbg(INFO, "Enter\n");

 	brcmfmac_pdata = dev_get_platdata(&pdev->dev);

 	if (brcmfmac_pdata->power_on)
 		brcmfmac_pdata->power_on();

 	return 0;
 }

 static int brcmf_common_pd_remove(struct platform_device *pdev)
 {
 	brcmf_dbg(INFO, "Enter\n");

 	if (brcmfmac_pdata->power_off)
 		brcmfmac_pdata->power_off();

 	return 0;
 }

 static struct platform_driver brcmf_pd = {
 	.remove		= brcmf_common_pd_remove,
 	.driver		= {
 		.name	= BRCMFMAC_PDATA_NAME,
 	}
 };

 static int __init brcmfmac_module_init(void)
 {
 	int err;

 	/* Initialize debug system first */
 	brcmf_debugfs_init();

 	/* Get the platform data (if available) for our devices */
 	err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe);
 	if (err == -ENODEV)
 		brcmf_dbg(INFO, "No platform data available.\n");

 	/* Initialize global module paramaters */
 	brcmf_mp_attach();

 	/* Continue the initialization by registering the different busses */
 	err = brcmf_core_init();
 	if (err) {
 		brcmf_debugfs_exit();
 		if (brcmfmac_pdata)
 			platform_driver_unregister(&brcmf_pd);
 	}

 	return err;
 }

 static void __exit brcmfmac_module_exit(void)
 {
 	brcmf_core_exit();
 	if (brcmfmac_pdata)
 		platform_driver_unregister(&brcmf_pd);
 	brcmf_debugfs_exit();
 }

 module_init(brcmfmac_module_init);
 module_exit(brcmfmac_module_exit);
	/*
	* Copyright (c) 2010 Broadcom Corporation
	*
	* 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.
	*/

	#include <linux/kernel.h>
	#include <linux/string.h>
	#include <linux/netdevice.h>
	#include <linux/module.h>
	#include <brcmu_wifi.h>
	#include <brcmu_utils.h>
	#include "core.h"
	#include "bus.h"
	#include "debug.h"
	#include "fwil.h"
	#include "fwil_types.h"
	#include "tracepoint.h"
	#include "common.h"
	#include "of.h"

	MODULE_AUTHOR("Broadcom Corporation");
	MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
	MODULE_LICENSE("Dual BSD/GPL");

	const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

	#define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40
	#define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40

	/* default boost value for RSSI_DELTA in preferred join selection */
	#define BRCMF_JOIN_PREF_RSSI_BOOST 8

	#define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */

	static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
	module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
	MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]");

	/* Debug level configuration. See debug.h for bits, sysfs modifiable */
	int brcmf_msg_level;
	module_param_named(debug, brcmf_msg_level, int, S_IRUSR \| S_IWUSR);
	MODULE_PARM_DESC(debug, "Level of debug output");

	static int brcmf_p2p_enable;
	module_param_named(p2pon, brcmf_p2p_enable, int, 0);
	MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality");

	static int brcmf_feature_disable;
	module_param_named(feature_disable, brcmf_feature_disable, int, 0);
	MODULE_PARM_DESC(feature_disable, "Disable features");

	static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN];
	module_param_string(alternative_fw_path, brcmf_firmware_path,
	BRCMF_FW_ALTPATH_LEN, S_IRUSR);
	MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path");

	static int brcmf_fcmode;
	module_param_named(fcmode, brcmf_fcmode, int, 0);
	MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control");

	static int brcmf_roamoff;
	module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR);
	MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine");

	#ifdef DEBUG
	/* always succeed brcmf_bus_start() */
	static int brcmf_ignore_probe_fail;
	module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0);
	MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging");
	#endif

	static struct brcmfmac_platform_data *brcmfmac_pdata;
	struct brcmf_mp_global_t brcmf_mp_global;

	void brcmf_c_set_joinpref_default(struct brcmf_if *ifp)
	{
	struct brcmf_join_pref_params join_pref_params[2];
	int err;

	/* Setup join_pref to select target by RSSI (boost on 5GHz) */
	join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA;
	join_pref_params[0].len = 2;
	join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST;
	join_pref_params[0].band = WLC_BAND_5G;

	join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI;
	join_pref_params[1].len = 2;
	join_pref_params[1].rssi_gain = 0;
	join_pref_params[1].band = 0;
	err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params,
	sizeof(join_pref_params));
	if (err)
	brcmf_err("Set join_pref error (%d)\n", err);
	}

	int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
	{
	s8 eventmask[BRCMF_EVENTING_MASK_LEN];
	u8 buf[BRCMF_DCMD_SMLEN];
	struct brcmf_rev_info_le revinfo;
	struct brcmf_rev_info *ri;
	char *ptr;
	s32 err;

	/* retreive mac address */
	err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,
	sizeof(ifp->mac_addr));
	if (err < 0) {
	brcmf_err("Retreiving cur_etheraddr failed, %d\n", err);
	goto done;
	}
	memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac));

	err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO,
	&revinfo, sizeof(revinfo));
	ri = &ifp->drvr->revinfo;
	if (err < 0) {
	brcmf_err("retrieving revision info failed, %d\n", err);
	} else {
	ri->vendorid = le32_to_cpu(revinfo.vendorid);
	ri->deviceid = le32_to_cpu(revinfo.deviceid);
	ri->radiorev = le32_to_cpu(revinfo.radiorev);
	ri->chiprev = le32_to_cpu(revinfo.chiprev);
	ri->corerev = le32_to_cpu(revinfo.corerev);
	ri->boardid = le32_to_cpu(revinfo.boardid);
	ri->boardvendor = le32_to_cpu(revinfo.boardvendor);
	ri->boardrev = le32_to_cpu(revinfo.boardrev);
	ri->driverrev = le32_to_cpu(revinfo.driverrev);
	ri->ucoderev = le32_to_cpu(revinfo.ucoderev);
	ri->bus = le32_to_cpu(revinfo.bus);
	ri->chipnum = le32_to_cpu(revinfo.chipnum);
	ri->phytype = le32_to_cpu(revinfo.phytype);
	ri->phyrev = le32_to_cpu(revinfo.phyrev);
	ri->anarev = le32_to_cpu(revinfo.anarev);
	ri->chippkg = le32_to_cpu(revinfo.chippkg);
	ri->nvramrev = le32_to_cpu(revinfo.nvramrev);
	}
	ri->result = err;

	/* query for 'ver' to get version info from firmware */
	memset(buf, 0, sizeof(buf));
	strcpy(buf, "ver");
	err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf));
	if (err < 0) {
	brcmf_err("Retreiving version information failed, %d\n",
	err);
	goto done;
	}
	ptr = (char *)buf;
	strsep(&ptr, "\n");

	/* Print fw version info */
	brcmf_err("Firmware version = %s\n", buf);

	/* locate firmware version number for ethtool */
	ptr = strrchr(buf, ' ') + 1;
	strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver));

	/* set mpc */
	err = brcmf_fil_iovar_int_set(ifp, "mpc", 1);
	if (err) {
	brcmf_err("failed setting mpc\n");
	goto done;
	}

	brcmf_c_set_joinpref_default(ifp);

	/* Setup event_msgs, enable E_IF */
	err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask,
	BRCMF_EVENTING_MASK_LEN);
	if (err) {
	brcmf_err("Get event_msgs error (%d)\n", err);
	goto done;
	}
	setbit(eventmask, BRCMF_E_IF);
	err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask,
	BRCMF_EVENTING_MASK_LEN);
	if (err) {
	brcmf_err("Set event_msgs error (%d)\n", err);
	goto done;
	}

	/* Setup default scan channel time */
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME,
	BRCMF_DEFAULT_SCAN_CHANNEL_TIME);
	if (err) {
	brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n",
	err);
	goto done;
	}

	/* Setup default scan unassoc time */
	err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME,
	BRCMF_DEFAULT_SCAN_UNASSOC_TIME);
	if (err) {
	brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n",
	err);
	goto done;
	}

	/* Enable tx beamforming, errors can be ignored (not supported) */
	(void)brcmf_fil_iovar_int_set(ifp, "txbf", 1);

	/* do bus specific preinit here */
	err = brcmf_bus_preinit(ifp->drvr->bus_if);
	done:
	return err;
	}

	#if defined(CONFIG_BRCM_TRACING) \|\| defined(CONFIG_BRCMDBG)
	void __brcmf_dbg(u32 level, const char func, const char fmt, ...)
	{
	struct va_format vaf = {
	.fmt = fmt,
	};
	va_list args;

	va_start(args, fmt);
	vaf.va = &args;
	if (brcmf_msg_level & level)
	pr_debug("%s %pV", func, &vaf);
	trace_brcmf_dbg(level, func, &vaf);
	va_end(args);
	}
	#endif

	static void brcmf_mp_attach(void)
	{
	/* If module param firmware path is set then this will always be used,
	* if not set then if available use the platform data version. To make
	* sure it gets initialized at all, always copy the module param version
	*/
	strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path,
	BRCMF_FW_ALTPATH_LEN);
	if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) &&
	(brcmf_mp_global.firmware_path[0] == '\0')) {
	strlcpy(brcmf_mp_global.firmware_path,
	brcmfmac_pdata->fw_alternative_path,
	BRCMF_FW_ALTPATH_LEN);
	}
	}

	struct brcmf_mp_device brcmf_get_module_param(struct device dev,
	enum brcmf_bus_type bus_type,
	u32 chip, u32 chiprev)
	{
	struct brcmf_mp_device *settings;
	struct brcmfmac_pd_device *device_pd;
	bool found;
	int i;

	brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip,
	chiprev);
	settings = kzalloc(sizeof(*settings), GFP_ATOMIC);
	if (!settings)
	return NULL;

	/* start by using the module paramaters */
	settings->p2p_enable = !!brcmf_p2p_enable;
	settings->feature_disable = brcmf_feature_disable;
	settings->fcmode = brcmf_fcmode;
	settings->roamoff = !!brcmf_roamoff;
	#ifdef DEBUG
	settings->ignore_probe_fail = !!brcmf_ignore_probe_fail;
	#endif

	if (bus_type == BRCMF_BUSTYPE_SDIO)
	settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz;

	/* See if there is any device specific platform data configured */
	found = false;
	if (brcmfmac_pdata) {
	for (i = 0; i < brcmfmac_pdata->device_count; i++) {
	device_pd = &brcmfmac_pdata->devices[i];
	if ((device_pd->bus_type == bus_type) &&
	(device_pd->id == chip) &&
	((device_pd->rev == chiprev) \|\|
	(device_pd->rev == -1))) {
	brcmf_dbg(INFO, "Platform data for device found\n");
	settings->country_codes =
	device_pd->country_codes;
	if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO)
	memcpy(&settings->bus.sdio,
	&device_pd->bus.sdio,
	sizeof(settings->bus.sdio));
	found = true;
	break;
	}
	}
	}
	if ((bus_type == BRCMF_BUSTYPE_SDIO) && (!found)) {
	/* No platform data for this device. In case of SDIO try OF
	* (Open Firwmare) Device Tree.
	*/
	brcmf_of_probe(dev, &settings->bus.sdio);
	}
	return settings;
	}

	void brcmf_release_module_param(struct brcmf_mp_device *module_param)
	{
	kfree(module_param);
	}

	static int __init brcmf_common_pd_probe(struct platform_device *pdev)
	{
	brcmf_dbg(INFO, "Enter\n");

	brcmfmac_pdata = dev_get_platdata(&pdev->dev);

	if (brcmfmac_pdata->power_on)
	brcmfmac_pdata->power_on();

	return 0;
	}

	static int brcmf_common_pd_remove(struct platform_device *pdev)
	{
	brcmf_dbg(INFO, "Enter\n");

	if (brcmfmac_pdata->power_off)
	brcmfmac_pdata->power_off();

	return 0;
	}

	static struct platform_driver brcmf_pd = {
	.remove = brcmf_common_pd_remove,
	.driver = {
	.name = BRCMFMAC_PDATA_NAME,
	}
	};

	static int __init brcmfmac_module_init(void)
	{
	int err;

	/* Initialize debug system first */
	brcmf_debugfs_init();

	/* Get the platform data (if available) for our devices */
	err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe);
	if (err == -ENODEV)
	brcmf_dbg(INFO, "No platform data available.\n");

	/* Initialize global module paramaters */
	brcmf_mp_attach();

	/* Continue the initialization by registering the different busses */
	err = brcmf_core_init();
	if (err) {
	brcmf_debugfs_exit();
	if (brcmfmac_pdata)
	platform_driver_unregister(&brcmf_pd);
	}

	return err;
	}

	static void __exit brcmfmac_module_exit(void)
	{
	brcmf_core_exit();
	if (brcmfmac_pdata)
	platform_driver_unregister(&brcmf_pd);
	brcmf_debugfs_exit();
	}

	module_init(brcmfmac_module_init);
	module_exit(brcmfmac_module_exit);