[mirror_ubuntu-bionic-kernel.git] / drivers / bluetooth / btmrvl_main.c

/**
 * Marvell Bluetooth driver
 *
 * Copyright (C) 2009, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 **/

#include <linux/module.h>
#include <linux/of.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btmrvl_drv.h"

#define VERSION "1.0"

/*
 * This function is called by interface specific interrupt handler.
 * It updates Power Save & Host Sleep states, and wakes up the main
 * thread.
 */
void btmrvl_interrupt(struct btmrvl_private *priv)
{
	priv->adapter->ps_state = PS_AWAKE;

	priv->adapter->wakeup_tries = 0;

	priv->adapter->int_count++;

	wake_up_interruptible(&priv->main_thread.wait_q);
}
EXPORT_SYMBOL_GPL(btmrvl_interrupt);

bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
	struct hci_event_hdr *hdr = (void *) skb->data;

	if (hdr->evt == HCI_EV_CMD_COMPLETE) {
		struct hci_ev_cmd_complete *ec;
		u16 opcode;

		ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
		opcode = __le16_to_cpu(ec->opcode);

		if (priv->btmrvl_dev.sendcmdflag) {
			priv->btmrvl_dev.sendcmdflag = false;
			priv->adapter->cmd_complete = true;
			wake_up_interruptible(&priv->adapter->cmd_wait_q);
		}

		if (hci_opcode_ogf(opcode) == 0x3F) {
			BT_DBG("vendor event skipped: opcode=%#4.4x", opcode);
			kfree_skb(skb);
			return false;
		}
	}

	return true;
}
EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);

int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
{
	struct btmrvl_adapter *adapter = priv->adapter;
	struct btmrvl_event *event;
	int ret = 0;

	event = (struct btmrvl_event *) skb->data;
	if (event->ec != 0xff) {
		BT_DBG("Not Marvell Event=%x", event->ec);
		ret = -EINVAL;
		goto exit;
	}

	switch (event->data[0]) {
	case BT_EVENT_AUTO_SLEEP_MODE:
		if (!event->data[2]) {
			if (event->data[1] == BT_PS_ENABLE)
				adapter->psmode = 1;
			else
				adapter->psmode = 0;
			BT_DBG("PS Mode:%s",
				(adapter->psmode) ? "Enable" : "Disable");
		} else {
			BT_DBG("PS Mode command failed");
		}
		break;

	case BT_EVENT_HOST_SLEEP_CONFIG:
		if (!event->data[3])
			BT_DBG("gpio=%x, gap=%x", event->data[1],
							event->data[2]);
		else
			BT_DBG("HSCFG command failed");
		break;

	case BT_EVENT_HOST_SLEEP_ENABLE:
		if (!event->data[1]) {
			adapter->hs_state = HS_ACTIVATED;
			if (adapter->psmode)
				adapter->ps_state = PS_SLEEP;
			BT_DBG("HS ACTIVATED!");
		} else {
			BT_DBG("HS Enable failed");
		}
		break;

	case BT_EVENT_MODULE_CFG_REQ:
		if (priv->btmrvl_dev.sendcmdflag &&
				event->data[1] == MODULE_BRINGUP_REQ) {
			BT_DBG("EVENT:%s",
				((event->data[2] == MODULE_BROUGHT_UP) ||
				(event->data[2] == MODULE_ALREADY_UP)) ?
				"Bring-up succeed" : "Bring-up failed");

			if (event->length > 3 && event->data[3])
				priv->btmrvl_dev.dev_type = HCI_AMP;
			else
				priv->btmrvl_dev.dev_type = HCI_BREDR;

			BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
		} else if (priv->btmrvl_dev.sendcmdflag &&
				event->data[1] == MODULE_SHUTDOWN_REQ) {
			BT_DBG("EVENT:%s", (event->data[2]) ?
				"Shutdown failed" : "Shutdown succeed");
		} else {
			BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
			ret = -EINVAL;
		}
		break;

	case BT_EVENT_POWER_STATE:
		if (event->data[1] == BT_PS_SLEEP)
			adapter->ps_state = PS_SLEEP;
		BT_DBG("EVENT:%s",
			(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
		break;

	default:
		BT_DBG("Unknown Event=%d", event->data[0]);
		ret = -EINVAL;
		break;
	}

exit:
	if (!ret)
		kfree_skb(skb);

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_process_event);

static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
				const void *param, u8 len)
{
	struct sk_buff *skb;
	struct hci_command_hdr *hdr;

	skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
	if (skb == NULL) {
		BT_ERR("No free skb");
		return -ENOMEM;
	}

	hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
	hdr->opcode = cpu_to_le16(opcode);
	hdr->plen = len;

	if (len)
		memcpy(skb_put(skb, len), param, len);

	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

	skb_queue_head(&priv->adapter->tx_queue, skb);

	priv->btmrvl_dev.sendcmdflag = true;

	priv->adapter->cmd_complete = false;

	wake_up_interruptible(&priv->main_thread.wait_q);

	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
				priv->adapter->cmd_complete,
				msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
		return -ETIMEDOUT;

	return 0;
}

int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
{
	int ret;

	ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
	if (ret)
		BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);

int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
{
	int ret;
	u8 param[2];

	param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
	param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);

	BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
	       param[0], param[1]);

	ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
	if (ret)
		BT_ERR("HSCFG command failed\n");

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);

int btmrvl_enable_ps(struct btmrvl_private *priv)
{
	int ret;
	u8 param;

	if (priv->btmrvl_dev.psmode)
		param = BT_PS_ENABLE;
	else
		param = BT_PS_DISABLE;

	ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
	if (ret)
		BT_ERR("PSMODE command failed\n");

	return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_enable_ps);

int btmrvl_enable_hs(struct btmrvl_private *priv)
{
	int ret;

	ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
	if (ret)
		BT_ERR("Host sleep enable command failed\n");

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_enable_hs);

int btmrvl_prepare_command(struct btmrvl_private *priv)
{
	int ret = 0;

	if (priv->btmrvl_dev.hscfgcmd) {
		priv->btmrvl_dev.hscfgcmd = 0;
		btmrvl_send_hscfg_cmd(priv);
	}

	if (priv->btmrvl_dev.pscmd) {
		priv->btmrvl_dev.pscmd = 0;
		btmrvl_enable_ps(priv);
	}

	if (priv->btmrvl_dev.hscmd) {
		priv->btmrvl_dev.hscmd = 0;

		if (priv->btmrvl_dev.hsmode) {
			ret = btmrvl_enable_hs(priv);
		} else {
			ret = priv->hw_wakeup_firmware(priv);
			priv->adapter->hs_state = HS_DEACTIVATED;
		}
	}

	return ret;
}

static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
	int ret = 0;

	if (!skb || !skb->data)
		return -EINVAL;

	if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
		BT_ERR("Tx Error: Bad skb length %d : %d",
						skb->len, BTM_UPLD_SIZE);
		return -EINVAL;
	}

	if (skb_headroom(skb) < BTM_HEADER_LEN) {
		struct sk_buff *tmp = skb;

		skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
		if (!skb) {
			BT_ERR("Tx Error: realloc_headroom failed %d",
				BTM_HEADER_LEN);
			skb = tmp;
			return -EINVAL;
		}

		kfree_skb(tmp);
	}

	skb_push(skb, BTM_HEADER_LEN);

	/* header type: byte[3]
	 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
	 * header length: byte[2][1][0]
	 */

	skb->data[0] = (skb->len & 0x0000ff);
	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	skb->data[2] = (skb->len & 0xff0000) >> 16;
	skb->data[3] = bt_cb(skb)->pkt_type;

	if (priv->hw_host_to_card)
		ret = priv->hw_host_to_card(priv, skb->data, skb->len);

	return ret;
}

static void btmrvl_init_adapter(struct btmrvl_private *priv)
{
	skb_queue_head_init(&priv->adapter->tx_queue);

	priv->adapter->ps_state = PS_AWAKE;

	init_waitqueue_head(&priv->adapter->cmd_wait_q);
}

static void btmrvl_free_adapter(struct btmrvl_private *priv)
{
	skb_queue_purge(&priv->adapter->tx_queue);

	kfree(priv->adapter);

	priv->adapter = NULL;
}

static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct btmrvl_private *priv = hci_get_drvdata(hdev);

	BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);

	if (!test_bit(HCI_RUNNING, &hdev->flags)) {
		BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
		print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
							skb->data, skb->len);
		return -EBUSY;
	}

	switch (bt_cb(skb)->pkt_type) {
	case HCI_COMMAND_PKT:
		hdev->stat.cmd_tx++;
		break;

	case HCI_ACLDATA_PKT:
		hdev->stat.acl_tx++;
		break;

	case HCI_SCODATA_PKT:
		hdev->stat.sco_tx++;
		break;
	}

	skb_queue_tail(&priv->adapter->tx_queue, skb);

	wake_up_interruptible(&priv->main_thread.wait_q);

	return 0;
}

static int btmrvl_flush(struct hci_dev *hdev)
{
	struct btmrvl_private *priv = hci_get_drvdata(hdev);

	skb_queue_purge(&priv->adapter->tx_queue);

	return 0;
}

static int btmrvl_close(struct hci_dev *hdev)
{
	struct btmrvl_private *priv = hci_get_drvdata(hdev);

	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
		return 0;

	skb_queue_purge(&priv->adapter->tx_queue);

	return 0;
}

static int btmrvl_open(struct hci_dev *hdev)
{
	set_bit(HCI_RUNNING, &hdev->flags);

	return 0;
}

static int btmrvl_download_cal_data(struct btmrvl_private *priv,
				    u8 *config_data)
{
	int i, ret;
	u8 data[BT_CMD_DATA_SIZE];

	data[0] = 0x00;
	data[1] = 0x00;
	data[2] = 0x00;
	data[3] = BT_CMD_DATA_SIZE - 4;

	/* Swap cal-data bytes. Each four bytes are swapped. Considering 4
	 * byte SDIO header offset, mapping of input and output bytes will be
	 * {3, 2, 1, 0} -> {0+4, 1+4, 2+4, 3+4},
	 * {7, 6, 5, 4} -> {4+4, 5+4, 6+4, 7+4} */
	for (i = 4; i < BT_CMD_DATA_SIZE; i++)
		data[i] = config_data[(i / 4) * 8 - 1 - i];

	print_hex_dump_bytes("Calibration data: ",
			     DUMP_PREFIX_OFFSET, data, BT_CMD_DATA_SIZE);

	ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
				   BT_CMD_DATA_SIZE);
	if (ret)
		BT_ERR("Failed to download caibration data\n");

	return 0;
}

static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
{
	struct device_node *dt_node;
	u8 cal_data[BT_CAL_DATA_SIZE];
	const char name[] = "btmrvl_caldata";
	const char property[] = "btmrvl,caldata";
	int ret;

	dt_node = of_find_node_by_name(NULL, name);
	if (!dt_node)
		return -ENODEV;

	ret = of_property_read_u8_array(dt_node, property, cal_data,
					sizeof(cal_data));
	if (ret)
		return ret;

	BT_DBG("Use cal data from device tree");
	ret = btmrvl_download_cal_data(priv, cal_data);
	if (ret) {
		BT_ERR("Fail to download calibrate data");
		return ret;
	}

	return 0;
}

static int btmrvl_setup(struct hci_dev *hdev)
{
	struct btmrvl_private *priv = hci_get_drvdata(hdev);

	btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);

	btmrvl_cal_data_dt(priv);

	priv->btmrvl_dev.psmode = 1;
	btmrvl_enable_ps(priv);

	priv->btmrvl_dev.gpio_gap = 0xffff;
	btmrvl_send_hscfg_cmd(priv);

	return 0;
}

/*
 * This function handles the event generated by firmware, rx data
 * received from firmware, and tx data sent from kernel.
 */
static int btmrvl_service_main_thread(void *data)
{
	struct btmrvl_thread *thread = data;
	struct btmrvl_private *priv = thread->priv;
	struct btmrvl_adapter *adapter = priv->adapter;
	wait_queue_t wait;
	struct sk_buff *skb;
	ulong flags;

	init_waitqueue_entry(&wait, current);

	for (;;) {
		add_wait_queue(&thread->wait_q, &wait);

		set_current_state(TASK_INTERRUPTIBLE);
		if (kthread_should_stop()) {
			BT_DBG("main_thread: break from main thread");
			break;
		}

		if (adapter->wakeup_tries ||
				((!adapter->int_count) &&
				(!priv->btmrvl_dev.tx_dnld_rdy ||
				skb_queue_empty(&adapter->tx_queue)))) {
			BT_DBG("main_thread is sleeping...");
			schedule();
		}

		set_current_state(TASK_RUNNING);

		remove_wait_queue(&thread->wait_q, &wait);

		BT_DBG("main_thread woke up");

		spin_lock_irqsave(&priv->driver_lock, flags);
		if (adapter->int_count) {
			adapter->int_count = 0;
			spin_unlock_irqrestore(&priv->driver_lock, flags);
			priv->hw_process_int_status(priv);
		} else if (adapter->ps_state == PS_SLEEP &&
					!skb_queue_empty(&adapter->tx_queue)) {
			spin_unlock_irqrestore(&priv->driver_lock, flags);
			adapter->wakeup_tries++;
			priv->hw_wakeup_firmware(priv);
			continue;
		} else {
			spin_unlock_irqrestore(&priv->driver_lock, flags);
		}

		if (adapter->ps_state == PS_SLEEP)
			continue;

		if (!priv->btmrvl_dev.tx_dnld_rdy)
			continue;

		skb = skb_dequeue(&adapter->tx_queue);
		if (skb) {
			if (btmrvl_tx_pkt(priv, skb))
				priv->btmrvl_dev.hcidev->stat.err_tx++;
			else
				priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;

			kfree_skb(skb);
		}
	}

	return 0;
}

int btmrvl_register_hdev(struct btmrvl_private *priv)
{
	struct hci_dev *hdev = NULL;
	int ret;

	hdev = hci_alloc_dev();
	if (!hdev) {
		BT_ERR("Can not allocate HCI device");
		goto err_hdev;
	}

	priv->btmrvl_dev.hcidev = hdev;
	hci_set_drvdata(hdev, priv);

	hdev->bus   = HCI_SDIO;
	hdev->open  = btmrvl_open;
	hdev->close = btmrvl_close;
	hdev->flush = btmrvl_flush;
	hdev->send  = btmrvl_send_frame;
	hdev->setup = btmrvl_setup;

	hdev->dev_type = priv->btmrvl_dev.dev_type;

	ret = hci_register_dev(hdev);
	if (ret < 0) {
		BT_ERR("Can not register HCI device");
		goto err_hci_register_dev;
	}

#ifdef CONFIG_DEBUG_FS
	btmrvl_debugfs_init(hdev);
#endif

	return 0;

err_hci_register_dev:
	hci_free_dev(hdev);

err_hdev:
	/* Stop the thread servicing the interrupts */
	kthread_stop(priv->main_thread.task);

	btmrvl_free_adapter(priv);
	kfree(priv);

	return -ENOMEM;
}
EXPORT_SYMBOL_GPL(btmrvl_register_hdev);

struct btmrvl_private *btmrvl_add_card(void *card)
{
	struct btmrvl_private *priv;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		BT_ERR("Can not allocate priv");
		goto err_priv;
	}

	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
	if (!priv->adapter) {
		BT_ERR("Allocate buffer for btmrvl_adapter failed!");
		goto err_adapter;
	}

	btmrvl_init_adapter(priv);

	BT_DBG("Starting kthread...");
	priv->main_thread.priv = priv;
	spin_lock_init(&priv->driver_lock);

	init_waitqueue_head(&priv->main_thread.wait_q);
	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
				&priv->main_thread, "btmrvl_main_service");

	priv->btmrvl_dev.card = card;
	priv->btmrvl_dev.tx_dnld_rdy = true;

	return priv;

err_adapter:
	kfree(priv);

err_priv:
	return NULL;
}
EXPORT_SYMBOL_GPL(btmrvl_add_card);

int btmrvl_remove_card(struct btmrvl_private *priv)
{
	struct hci_dev *hdev;

	hdev = priv->btmrvl_dev.hcidev;

	wake_up_interruptible(&priv->adapter->cmd_wait_q);

	kthread_stop(priv->main_thread.task);

#ifdef CONFIG_DEBUG_FS
	btmrvl_debugfs_remove(hdev);
#endif

	hci_unregister_dev(hdev);

	hci_free_dev(hdev);

	priv->btmrvl_dev.hcidev = NULL;

	btmrvl_free_adapter(priv);

	kfree(priv);

	return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_remove_card);

MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL v2");
Commit	Line	Data
132ff4e5 BZ	1	/**
	2	* Marvell Bluetooth driver
	3	*
	4	* Copyright (C) 2009, Marvell International Ltd.
	5	*
	6	* This software file (the "File") is distributed by Marvell International
	7	* Ltd. under the terms of the GNU General Public License Version 2, June 1991
	8	* (the "License"). You may use, redistribute and/or modify this File in
	9	* accordance with the terms and conditions of the License, a copy of which
	10	* is available by writing to the Free Software Foundation, Inc.,
	11	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
	12	* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
	13	*
	14	*
	15	* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
	16	* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
	17	* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
	18	* this warranty disclaimer.
	19	**/
	20
a59b968e	21	#include <linux/module.h>
433a9389	22	#include <linux/of.h>
132ff4e5 BZ	23	#include <net/bluetooth/bluetooth.h>
	24	#include <net/bluetooth/hci_core.h>
	25
	26	#include "btmrvl_drv.h"
	27
	28	#define VERSION "1.0"
	29
	30	/*
	31	* This function is called by interface specific interrupt handler.
	32	* It updates Power Save & Host Sleep states, and wakes up the main
	33	* thread.
	34	*/
	35	void btmrvl_interrupt(struct btmrvl_private *priv)
	36	{
132ff4e5 BZ	37	priv->adapter->ps_state = PS_AWAKE;
	38
	39	priv->adapter->wakeup_tries = 0;
	40
	41	priv->adapter->int_count++;
	42
	43	wake_up_interruptible(&priv->main_thread.wait_q);
132ff4e5 BZ	44	}
	45	EXPORT_SYMBOL_GPL(btmrvl_interrupt);
	46
ea1e76a3	47	bool btmrvl_check_evtpkt(struct btmrvl_private priv, struct sk_buff skb)
132ff4e5	48	{
4271e08d	49	struct hci_event_hdr hdr = (void ) skb->data;
132ff4e5	50
132ff4e5	51	if (hdr->evt == HCI_EV_CMD_COMPLETE) {
2c2453f3	52	struct hci_ev_cmd_complete *ec;
3e4543ab	53	u16 opcode;
2c2453f3	54
4271e08d	55	ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
132ff4e5	56	opcode = __le16_to_cpu(ec->opcode);
ea1e76a3	57
c037874c	58	if (priv->btmrvl_dev.sendcmdflag) {
132ff4e5 BZ	59	priv->btmrvl_dev.sendcmdflag = false;
	60	priv->adapter->cmd_complete = true;
	61	wake_up_interruptible(&priv->adapter->cmd_wait_q);
	62	}
ea1e76a3	63
3e4543ab BZ	64	if (hci_opcode_ogf(opcode) == 0x3F) {
3e4543ab BZ	65	BT_DBG("vendor event skipped: opcode=%#4.4x", opcode);
ea1e76a3 AE	66	kfree_skb(skb);
	67	return false;
	68	}
132ff4e5	69	}
ea1e76a3 AE	70
ea1e76a3 AE	71	return true;
132ff4e5 BZ	72	}
	73	EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
	74
	75	int btmrvl_process_event(struct btmrvl_private priv, struct sk_buff skb)
	76	{
	77	struct btmrvl_adapter *adapter = priv->adapter;
132ff4e5	78	struct btmrvl_event *event;
31f085fe	79	int ret = 0;
132ff4e5	80
132ff4e5 BZ	81	event = (struct btmrvl_event *) skb->data;
	82	if (event->ec != 0xff) {
	83	BT_DBG("Not Marvell Event=%x", event->ec);
	84	ret = -EINVAL;
	85	goto exit;
	86	}
	87
	88	switch (event->data[0]) {
3e4543ab	89	case BT_EVENT_AUTO_SLEEP_MODE:
132ff4e5 BZ	90	if (!event->data[2]) {
	91	if (event->data[1] == BT_PS_ENABLE)
	92	adapter->psmode = 1;
	93	else
	94	adapter->psmode = 0;
	95	BT_DBG("PS Mode:%s",
	96	(adapter->psmode) ? "Enable" : "Disable");
	97	} else {
	98	BT_DBG("PS Mode command failed");
	99	}
	100	break;
	101
3e4543ab	102	case BT_EVENT_HOST_SLEEP_CONFIG:
132ff4e5 BZ	103	if (!event->data[3])
132ff4e5 BZ	104	BT_DBG("gpio=%x, gap=%x", event->data[1],
4271e08d	105	event->data[2]);
132ff4e5 BZ	106	else
	107	BT_DBG("HSCFG command failed");
	108	break;
	109
3e4543ab	110	case BT_EVENT_HOST_SLEEP_ENABLE:
132ff4e5 BZ	111	if (!event->data[1]) {
	112	adapter->hs_state = HS_ACTIVATED;
	113	if (adapter->psmode)
	114	adapter->ps_state = PS_SLEEP;
132ff4e5 BZ	115	BT_DBG("HS ACTIVATED!");
	116	} else {
	117	BT_DBG("HS Enable failed");
	118	}
	119	break;
	120
3e4543ab	121	case BT_EVENT_MODULE_CFG_REQ:
4271e08d MH	122	if (priv->btmrvl_dev.sendcmdflag &&
4271e08d MH	123	event->data[1] == MODULE_BRINGUP_REQ) {
903c8437 BZ	124	BT_DBG("EVENT:%s",
	125	((event->data[2] == MODULE_BROUGHT_UP) \|\|
	126	(event->data[2] == MODULE_ALREADY_UP)) ?
	127	"Bring-up succeed" : "Bring-up failed");
f120c6b6	128
8f1e1742 DV	129	if (event->length > 3 && event->data[3])
8f1e1742 DV	130	priv->btmrvl_dev.dev_type = HCI_AMP;
f120c6b6 BZ	131	else
	132	priv->btmrvl_dev.dev_type = HCI_BREDR;
	133
	134	BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
4271e08d MH	135	} else if (priv->btmrvl_dev.sendcmdflag &&
4271e08d MH	136	event->data[1] == MODULE_SHUTDOWN_REQ) {
132ff4e5 BZ	137	BT_DBG("EVENT:%s", (event->data[2]) ?
	138	"Shutdown failed" : "Shutdown succeed");
	139	} else {
	140	BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
	141	ret = -EINVAL;
	142	}
	143	break;
	144
	145	case BT_EVENT_POWER_STATE:
	146	if (event->data[1] == BT_PS_SLEEP)
	147	adapter->ps_state = PS_SLEEP;
	148	BT_DBG("EVENT:%s",
	149	(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
	150	break;
	151
	152	default:
	153	BT_DBG("Unknown Event=%d", event->data[0]);
	154	ret = -EINVAL;
	155	break;
	156	}
	157
	158	exit:
	159	if (!ret)
	160	kfree_skb(skb);
	161
132ff4e5 BZ	162	return ret;
	163	}
	164	EXPORT_SYMBOL_GPL(btmrvl_process_event);
	165
3e4543ab	166	static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
c037874c	167	const void *param, u8 len)
132ff4e5	168	{
4271e08d	169	struct sk_buff *skb;
7d5b400c	170	struct hci_command_hdr *hdr;
132ff4e5	171
7d5b400c	172	skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
132ff4e5 BZ	173	if (skb == NULL) {
132ff4e5 BZ	174	BT_ERR("No free skb");
9374253f	175	return -ENOMEM;
132ff4e5 BZ	176	}
132ff4e5 BZ	177
7d5b400c	178	hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
3e4543ab	179	hdr->opcode = cpu_to_le16(opcode);
7d5b400c	180	hdr->plen = len;
c037874c AK	181
c037874c AK	182	if (len)
7d5b400c	183	memcpy(skb_put(skb, len), param, len);
132ff4e5 BZ	184
	185	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	186
132ff4e5 BZ	187	skb_queue_head(&priv->adapter->tx_queue, skb);
	188
	189	priv->btmrvl_dev.sendcmdflag = true;
	190
	191	priv->adapter->cmd_complete = false;
	192
132ff4e5 BZ	193	wake_up_interruptible(&priv->main_thread.wait_q);
132ff4e5 BZ	194
4271e08d MH	195	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
4271e08d MH	196	priv->adapter->cmd_complete,
c037874c AK	197	msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
	198	return -ETIMEDOUT;
	199
	200	return 0;
	201	}
132ff4e5	202
c037874c AK	203	int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
	204	{
	205	int ret;
	206
	207	ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
	208	if (ret)
	209	BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
132ff4e5	210
132ff4e5 BZ	211	return ret;
	212	}
	213	EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
	214
2a8ff611 AK	215	int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
2a8ff611 AK	216	{
c037874c AK	217	int ret;
c037874c AK	218	u8 param[2];
2a8ff611	219
c037874c AK	220	param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
c037874c AK	221	param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
2a8ff611	222
c037874c AK	223	BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
c037874c AK	224	param[0], param[1]);
2a8ff611	225
c037874c AK	226	ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
	227	if (ret)
	228	BT_ERR("HSCFG command failed\n");
2a8ff611	229
c037874c	230	return ret;
2a8ff611 AK	231	}
	232	EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
	233
32fd6398 AK	234	int btmrvl_enable_ps(struct btmrvl_private *priv)
32fd6398 AK	235	{
c037874c AK	236	int ret;
c037874c AK	237	u8 param;
32fd6398 AK	238
32fd6398 AK	239	if (priv->btmrvl_dev.psmode)
c037874c	240	param = BT_PS_ENABLE;
32fd6398	241	else
c037874c	242	param = BT_PS_DISABLE;
32fd6398	243
c037874c AK	244	ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
	245	if (ret)
	246	BT_ERR("PSMODE command failed\n");
32fd6398 AK	247
	248	return 0;
	249	}
	250	EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
	251
ba54a16f	252	int btmrvl_enable_hs(struct btmrvl_private *priv)
132ff4e5	253	{
c037874c	254	int ret;
132ff4e5	255
c037874c AK	256	ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
	257	if (ret)
	258	BT_ERR("Host sleep enable command failed\n");
132ff4e5	259
132ff4e5 BZ	260	return ret;
132ff4e5 BZ	261	}
ba54a16f	262	EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
132ff4e5 BZ	263
	264	int btmrvl_prepare_command(struct btmrvl_private *priv)
	265	{
9374253f	266	int ret = 0;
132ff4e5 BZ	267
	268	if (priv->btmrvl_dev.hscfgcmd) {
	269	priv->btmrvl_dev.hscfgcmd = 0;
2a8ff611	270	btmrvl_send_hscfg_cmd(priv);
132ff4e5 BZ	271	}
	272
	273	if (priv->btmrvl_dev.pscmd) {
	274	priv->btmrvl_dev.pscmd = 0;
32fd6398	275	btmrvl_enable_ps(priv);
132ff4e5 BZ	276	}
	277
	278	if (priv->btmrvl_dev.hscmd) {
	279	priv->btmrvl_dev.hscmd = 0;
	280
	281	if (priv->btmrvl_dev.hsmode) {
	282	ret = btmrvl_enable_hs(priv);
	283	} else {
	284	ret = priv->hw_wakeup_firmware(priv);
	285	priv->adapter->hs_state = HS_DEACTIVATED;
	286	}
	287	}
	288
132ff4e5 BZ	289	return ret;
	290	}
	291
	292	static int btmrvl_tx_pkt(struct btmrvl_private priv, struct sk_buff skb)
	293	{
9374253f	294	int ret = 0;
132ff4e5	295
9374253f	296	if (!skb \|\| !skb->data)
132ff4e5	297	return -EINVAL;
132ff4e5 BZ	298
	299	if (!skb->len \|\| ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
	300	BT_ERR("Tx Error: Bad skb length %d : %d",
4271e08d	301	skb->len, BTM_UPLD_SIZE);
132ff4e5 BZ	302	return -EINVAL;
	303	}
	304
	305	if (skb_headroom(skb) < BTM_HEADER_LEN) {
	306	struct sk_buff *tmp = skb;
	307
	308	skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
	309	if (!skb) {
	310	BT_ERR("Tx Error: realloc_headroom failed %d",
	311	BTM_HEADER_LEN);
	312	skb = tmp;
132ff4e5 BZ	313	return -EINVAL;
	314	}
	315
	316	kfree_skb(tmp);
	317	}
	318
	319	skb_push(skb, BTM_HEADER_LEN);
	320
	321	/* header type: byte[3]
	322	* HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
	323	* header length: byte[2][1][0]
	324	*/
	325
	326	skb->data[0] = (skb->len & 0x0000ff);
	327	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	328	skb->data[2] = (skb->len & 0xff0000) >> 16;
	329	skb->data[3] = bt_cb(skb)->pkt_type;
	330
	331	if (priv->hw_host_to_card)
	332	ret = priv->hw_host_to_card(priv, skb->data, skb->len);
	333
132ff4e5 BZ	334	return ret;
	335	}
	336
	337	static void btmrvl_init_adapter(struct btmrvl_private *priv)
	338	{
132ff4e5 BZ	339	skb_queue_head_init(&priv->adapter->tx_queue);
	340
	341	priv->adapter->ps_state = PS_AWAKE;
	342
	343	init_waitqueue_head(&priv->adapter->cmd_wait_q);
132ff4e5 BZ	344	}
	345
	346	static void btmrvl_free_adapter(struct btmrvl_private *priv)
	347	{
132ff4e5 BZ	348	skb_queue_purge(&priv->adapter->tx_queue);
	349
	350	kfree(priv->adapter);
	351
	352	priv->adapter = NULL;
132ff4e5 BZ	353	}
132ff4e5 BZ	354
7bd8f09f	355	static int btmrvl_send_frame(struct hci_dev hdev, struct sk_buff skb)
132ff4e5	356	{
7648d28f	357	struct btmrvl_private *priv = hci_get_drvdata(hdev);
132ff4e5	358
9374253f	359	BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
132ff4e5	360
132ff4e5 BZ	361	if (!test_bit(HCI_RUNNING, &hdev->flags)) {
	362	BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
	363	print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
4271e08d	364	skb->data, skb->len);
132ff4e5 BZ	365	return -EBUSY;
	366	}
	367
	368	switch (bt_cb(skb)->pkt_type) {
	369	case HCI_COMMAND_PKT:
	370	hdev->stat.cmd_tx++;
	371	break;
	372
	373	case HCI_ACLDATA_PKT:
	374	hdev->stat.acl_tx++;
	375	break;
	376
	377	case HCI_SCODATA_PKT:
	378	hdev->stat.sco_tx++;
	379	break;
	380	}
	381
	382	skb_queue_tail(&priv->adapter->tx_queue, skb);
	383
	384	wake_up_interruptible(&priv->main_thread.wait_q);
	385
132ff4e5 BZ	386	return 0;
	387	}
	388
	389	static int btmrvl_flush(struct hci_dev *hdev)
	390	{
155961e8	391	struct btmrvl_private *priv = hci_get_drvdata(hdev);
132ff4e5	392
132ff4e5 BZ	393	skb_queue_purge(&priv->adapter->tx_queue);
132ff4e5 BZ	394
132ff4e5 BZ	395	return 0;
	396	}
	397
	398	static int btmrvl_close(struct hci_dev *hdev)
	399	{
155961e8	400	struct btmrvl_private *priv = hci_get_drvdata(hdev);
132ff4e5	401
9374253f	402	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
132ff4e5	403	return 0;
132ff4e5 BZ	404
	405	skb_queue_purge(&priv->adapter->tx_queue);
	406
132ff4e5 BZ	407	return 0;
	408	}
	409
	410	static int btmrvl_open(struct hci_dev *hdev)
	411	{
132ff4e5 BZ	412	set_bit(HCI_RUNNING, &hdev->flags);
132ff4e5 BZ	413
132ff4e5 BZ	414	return 0;
	415	}
	416
433a9389 BZ	417	static int btmrvl_download_cal_data(struct btmrvl_private *priv,
433a9389 BZ	418	u8 *config_data)
2cc86890 AK	419	{
	420	int i, ret;
	421	u8 data[BT_CMD_DATA_SIZE];
	422
	423	data[0] = 0x00;
	424	data[1] = 0x00;
	425	data[2] = 0x00;
	426	data[3] = BT_CMD_DATA_SIZE - 4;
	427
	428	/* Swap cal-data bytes. Each four bytes are swapped. Considering 4
	429	* byte SDIO header offset, mapping of input and output bytes will be
	430	* {3, 2, 1, 0} -> {0+4, 1+4, 2+4, 3+4},
	431	* {7, 6, 5, 4} -> {4+4, 5+4, 6+4, 7+4} */
	432	for (i = 4; i < BT_CMD_DATA_SIZE; i++)
	433	data[i] = config_data[(i / 4) * 8 - 1 - i];
	434
	435	print_hex_dump_bytes("Calibration data: ",
	436	DUMP_PREFIX_OFFSET, data, BT_CMD_DATA_SIZE);
	437
	438	ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
	439	BT_CMD_DATA_SIZE);
	440	if (ret)
	441	BT_ERR("Failed to download caibration data\n");
	442
	443	return 0;
	444	}
	445
433a9389	446	static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
2cc86890	447	{
433a9389	448	struct device_node *dt_node;
2cc86890	449	u8 cal_data[BT_CAL_DATA_SIZE];
433a9389 BZ	450	const char name[] = "btmrvl_caldata";
433a9389 BZ	451	const char property[] = "btmrvl,caldata";
2cc86890 AK	452	int ret;
2cc86890 AK	453
433a9389 BZ	454	dt_node = of_find_node_by_name(NULL, name);
	455	if (!dt_node)
	456	return -ENODEV;
	457
	458	ret = of_property_read_u8_array(dt_node, property, cal_data,
	459	sizeof(cal_data));
2cc86890 AK	460	if (ret)
	461	return ret;
	462
433a9389 BZ	463	BT_DBG("Use cal data from device tree");
433a9389 BZ	464	ret = btmrvl_download_cal_data(priv, cal_data);
2cc86890	465	if (ret) {
433a9389	466	BT_ERR("Fail to download calibrate data");
2cc86890 AK	467	return ret;
	468	}
	469
	470	return 0;
	471	}
	472
4b245722 AK	473	static int btmrvl_setup(struct hci_dev *hdev)
	474	{
	475	struct btmrvl_private *priv = hci_get_drvdata(hdev);
	476
	477	btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
	478
433a9389	479	btmrvl_cal_data_dt(priv);
2cc86890	480
4b245722 AK	481	priv->btmrvl_dev.psmode = 1;
	482	btmrvl_enable_ps(priv);
	483
	484	priv->btmrvl_dev.gpio_gap = 0xffff;
	485	btmrvl_send_hscfg_cmd(priv);
	486
	487	return 0;
	488	}
	489
132ff4e5 BZ	490	/*
	491	* This function handles the event generated by firmware, rx data
	492	* received from firmware, and tx data sent from kernel.
	493	*/
	494	static int btmrvl_service_main_thread(void *data)
	495	{
	496	struct btmrvl_thread *thread = data;
	497	struct btmrvl_private *priv = thread->priv;
	498	struct btmrvl_adapter *adapter = priv->adapter;
	499	wait_queue_t wait;
	500	struct sk_buff *skb;
	501	ulong flags;
	502
132ff4e5 BZ	503	init_waitqueue_entry(&wait, current);
132ff4e5 BZ	504
132ff4e5 BZ	505	for (;;) {
	506	add_wait_queue(&thread->wait_q, &wait);
	507
	508	set_current_state(TASK_INTERRUPTIBLE);
ea05fea9 DD	509	if (kthread_should_stop()) {
	510	BT_DBG("main_thread: break from main thread");
	511	break;
	512	}
132ff4e5 BZ	513
132ff4e5 BZ	514	if (adapter->wakeup_tries \|\|
4271e08d MH	515	((!adapter->int_count) &&
	516	(!priv->btmrvl_dev.tx_dnld_rdy \|\|
	517	skb_queue_empty(&adapter->tx_queue)))) {
132ff4e5 BZ	518	BT_DBG("main_thread is sleeping...");
	519	schedule();
	520	}
	521
	522	set_current_state(TASK_RUNNING);
	523
	524	remove_wait_queue(&thread->wait_q, &wait);
	525
	526	BT_DBG("main_thread woke up");
	527
132ff4e5 BZ	528	spin_lock_irqsave(&priv->driver_lock, flags);
	529	if (adapter->int_count) {
	530	adapter->int_count = 0;
d1d10d78 AK	531	spin_unlock_irqrestore(&priv->driver_lock, flags);
d1d10d78 AK	532	priv->hw_process_int_status(priv);
4271e08d MH	533	} else if (adapter->ps_state == PS_SLEEP &&
4271e08d MH	534	!skb_queue_empty(&adapter->tx_queue)) {
132ff4e5 BZ	535	spin_unlock_irqrestore(&priv->driver_lock, flags);
	536	adapter->wakeup_tries++;
	537	priv->hw_wakeup_firmware(priv);
	538	continue;
d1d10d78 AK	539	} else {
d1d10d78 AK	540	spin_unlock_irqrestore(&priv->driver_lock, flags);
132ff4e5	541	}
132ff4e5 BZ	542
	543	if (adapter->ps_state == PS_SLEEP)
	544	continue;
	545
	546	if (!priv->btmrvl_dev.tx_dnld_rdy)
	547	continue;
	548
	549	skb = skb_dequeue(&adapter->tx_queue);
	550	if (skb) {
	551	if (btmrvl_tx_pkt(priv, skb))
	552	priv->btmrvl_dev.hcidev->stat.err_tx++;
	553	else
4271e08d	554	priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
132ff4e5 BZ	555
	556	kfree_skb(skb);
	557	}
	558	}
	559
132ff4e5 BZ	560	return 0;
	561	}
	562
64061607	563	int btmrvl_register_hdev(struct btmrvl_private *priv)
132ff4e5 BZ	564	{
132ff4e5 BZ	565	struct hci_dev *hdev = NULL;
132ff4e5 BZ	566	int ret;
132ff4e5 BZ	567
132ff4e5 BZ	568	hdev = hci_alloc_dev();
	569	if (!hdev) {
	570	BT_ERR("Can not allocate HCI device");
	571	goto err_hdev;
	572	}
	573
132ff4e5	574	priv->btmrvl_dev.hcidev = hdev;
155961e8	575	hci_set_drvdata(hdev, priv);
132ff4e5	576
e93ac9c0 MH	577	hdev->bus = HCI_SDIO;
e93ac9c0 MH	578	hdev->open = btmrvl_open;
132ff4e5 BZ	579	hdev->close = btmrvl_close;
132ff4e5 BZ	580	hdev->flush = btmrvl_flush;
e93ac9c0	581	hdev->send = btmrvl_send_frame;
4b245722	582	hdev->setup = btmrvl_setup;
64061607	583
f120c6b6 BZ	584	hdev->dev_type = priv->btmrvl_dev.dev_type;
f120c6b6 BZ	585
132ff4e5 BZ	586	ret = hci_register_dev(hdev);
	587	if (ret < 0) {
	588	BT_ERR("Can not register HCI device");
	589	goto err_hci_register_dev;
	590	}
	591
fb784f05 BZ	592	#ifdef CONFIG_DEBUG_FS
	593	btmrvl_debugfs_init(hdev);
	594	#endif
	595
64061607	596	return 0;
132ff4e5 BZ	597
132ff4e5 BZ	598	err_hci_register_dev:
132ff4e5 BZ	599	hci_free_dev(hdev);
	600
	601	err_hdev:
64061607 BZ	602	/* Stop the thread servicing the interrupts */
	603	kthread_stop(priv->main_thread.task);
	604
132ff4e5	605	btmrvl_free_adapter(priv);
64061607 BZ	606	kfree(priv);
	607
	608	return -ENOMEM;
	609	}
	610	EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
	611
	612	struct btmrvl_private btmrvl_add_card(void card)
	613	{
	614	struct btmrvl_private *priv;
	615
	616	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	617	if (!priv) {
	618	BT_ERR("Can not allocate priv");
	619	goto err_priv;
	620	}
	621
	622	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
	623	if (!priv->adapter) {
	624	BT_ERR("Allocate buffer for btmrvl_adapter failed!");
	625	goto err_adapter;
	626	}
	627
	628	btmrvl_init_adapter(priv);
	629
	630	BT_DBG("Starting kthread...");
	631	priv->main_thread.priv = priv;
	632	spin_lock_init(&priv->driver_lock);
	633
	634	init_waitqueue_head(&priv->main_thread.wait_q);
	635	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
	636	&priv->main_thread, "btmrvl_main_service");
	637
	638	priv->btmrvl_dev.card = card;
	639	priv->btmrvl_dev.tx_dnld_rdy = true;
	640
	641	return priv;
132ff4e5 BZ	642
	643	err_adapter:
	644	kfree(priv);
	645
	646	err_priv:
132ff4e5 BZ	647	return NULL;
	648	}
	649	EXPORT_SYMBOL_GPL(btmrvl_add_card);
	650
	651	int btmrvl_remove_card(struct btmrvl_private *priv)
	652	{
	653	struct hci_dev *hdev;
	654
132ff4e5 BZ	655	hdev = priv->btmrvl_dev.hcidev;
	656
	657	wake_up_interruptible(&priv->adapter->cmd_wait_q);
	658
	659	kthread_stop(priv->main_thread.task);
	660
fb784f05 BZ	661	#ifdef CONFIG_DEBUG_FS
	662	btmrvl_debugfs_remove(hdev);
	663	#endif
	664
132ff4e5 BZ	665	hci_unregister_dev(hdev);
	666
	667	hci_free_dev(hdev);
	668
	669	priv->btmrvl_dev.hcidev = NULL;
	670
	671	btmrvl_free_adapter(priv);
	672
	673	kfree(priv);
	674
132ff4e5 BZ	675	return 0;
	676	}
	677	EXPORT_SYMBOL_GPL(btmrvl_remove_card);
	678
	679	MODULE_AUTHOR("Marvell International Ltd.");
9666fb35	680	MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
132ff4e5 BZ	681	MODULE_VERSION(VERSION);
132ff4e5 BZ	682	MODULE_LICENSE("GPL v2");