hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Bluetooth: Add btmrvl driver for Marvell Bluetooth devices 

This driver provides basic definitions and library functions to
support Marvell Bluetooth enabled devices, such as 88W8688 WLAN/BT
combo chip.

This patch incorporates a lot of comments given by
Nicolas Pitre <nico@marvell.com>. Many thanks to Nicolas Pitre.

Signed-off-by: Rahul Tank <rahult@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Bing Zhao 2009-06-02 14:29:35 -07:00 committed by Marcel Holtmann
parent edad638869
commit 132ff4e5fa
4 changed files with 867 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/bluetooth/Kconfig
View File

@ -170,5 +170,17 @@ config BT_HCIVHCI
Say Y here to compile support for virtual HCI devices into the
kernel or say M to compile it as module (hci_vhci).
config BT_MRVL
tristate "Marvell Bluetooth driver support"
select FW_LOADER
help
The core driver to support Marvell Bluetooth devices.
This driver is required if you want to support
Marvell Bluetooth devices, such as 8688.
Say Y here to compile Marvell Bluetooth driver
into the kernel or say M to compile it as module.
endmenu

3
drivers/bluetooth/Makefile
View File

@ -15,6 +15,9 @@ obj-$(CONFIG_BT_HCIBTUART) += btuart_cs.o
obj-$(CONFIG_BT_HCIBTUSB) += btusb.o
obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o
btmrvl-objs := btmrvl_main.o
obj-$(CONFIG_BT_MRVL) += btmrvl.o
hci_uart-y := hci_ldisc.o
hci_uart-$(CONFIG_BT_HCIUART_H4) += hci_h4.o
hci_uart-$(CONFIG_BT_HCIUART_BCSP) += hci_bcsp.o

138
drivers/bluetooth/btmrvl_drv.h Normal file
View File

@ -0,0 +1,138 @@
/*
* Marvell Bluetooth driver: global definitions & declarations
*
* 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.
*
*/
#ifndef _BTMRVL_DRV_H_
#define _BTMRVL_DRV_H_
#include <linux/kthread.h>
#include <linux/bitops.h>
#include <net/bluetooth/bluetooth.h>
#define BTM_HEADER_LEN 4
#define BTM_DEV_NAME_LEN 32
#define BTM_UPLD_SIZE 2312
/* Time to wait until Host Sleep state change in millisecond */
#define WAIT_UNTIL_HS_STATE_CHANGED 5000
/* Time to wait for command response in millisecond */
#define WAIT_UNTIL_CMD_RESP 5000
struct btmrvl_thread {
struct task_struct *task;
wait_queue_head_t wait_q;
void *priv;
};
struct btmrvl_device {
char name[BTM_DEV_NAME_LEN];
void *card;
struct hci_dev *hcidev;
u8 tx_dnld_rdy;
u8 psmode;
u8 pscmd;
u8 hsmode;
u8 hscmd;
/* Low byte is gap, high byte is GPIO */
u16 gpio_gap;
u8 hscfgcmd;
u8 sendcmdflag;
};
struct btmrvl_adapter {
u32 int_count;
struct sk_buff_head tx_queue;
u8 psmode;
u8 ps_state;
u8 hs_state;
u8 wakeup_tries;
wait_queue_head_t cmd_wait_q;
u8 cmd_complete;
};
struct btmrvl_private {
struct btmrvl_device btmrvl_dev;
struct btmrvl_adapter *adapter;
struct btmrvl_thread main_thread;
int (*hw_host_to_card) (struct btmrvl_private *priv,
u8 *payload, u16 nb);
int (*hw_wakeup_firmware) (struct btmrvl_private *priv);
spinlock_t driver_lock; /* spinlock used by driver */
};
#define MRVL_VENDOR_PKT 0xFE
/* Bluetooth commands */
#define BT_CMD_AUTO_SLEEP_MODE 0x23
#define BT_CMD_HOST_SLEEP_CONFIG 0x59
#define BT_CMD_HOST_SLEEP_ENABLE 0x5A
#define BT_CMD_MODULE_CFG_REQ 0x5B
/* Sub-commands: Module Bringup/Shutdown Request */
#define MODULE_BRINGUP_REQ 0xF1
#define MODULE_SHUTDOWN_REQ 0xF2
#define BT_EVENT_POWER_STATE 0x20
/* Bluetooth Power States */
#define BT_PS_ENABLE 0x02
#define BT_PS_DISABLE 0x03
#define BT_PS_SLEEP 0x01
#define OGF 0x3F
/* Host Sleep states */
#define HS_ACTIVATED 0x01
#define HS_DEACTIVATED 0x00
/* Power Save modes */
#define PS_SLEEP 0x01
#define PS_AWAKE 0x00
struct btmrvl_cmd {
__le16 ocf_ogf;
u8 length;
u8 data[4];
} __attribute__ ((packed));
struct btmrvl_event {
u8 ec; /* event counter */
u8 length;
u8 data[4];
} __attribute__ ((packed));
/* Prototype of global function */
struct btmrvl_private *btmrvl_add_card(void *card);
int btmrvl_remove_card(struct btmrvl_private *priv);
void btmrvl_interrupt(struct btmrvl_private *priv);
void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb);
int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb);
int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd);
int btmrvl_prepare_command(struct btmrvl_private *priv);
#endif /* _BTMRVL_DRV_H_ */

714
drivers/bluetooth/btmrvl_main.c Normal file
View File

@ -0,0 +1,714 @@
/**
* 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 <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)
{
BT_DBG("Enter");
priv->adapter->ps_state = PS_AWAKE;
priv->adapter->wakeup_tries = 0;
priv->adapter->int_count++;
wake_up_interruptible(&priv->main_thread.wait_q);
BT_DBG("Leave");
}
EXPORT_SYMBOL_GPL(btmrvl_interrupt);
void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
struct hci_event_hdr *hdr = (struct hci_event_hdr *)skb->data;
struct hci_ev_cmd_complete *ec;
u16 opcode, ocf;
BT_DBG("Enter");
if (hdr->evt == HCI_EV_CMD_COMPLETE) {
ec = (struct hci_ev_cmd_complete *)(skb->data +
HCI_EVENT_HDR_SIZE);
opcode = __le16_to_cpu(ec->opcode);
ocf = hci_opcode_ocf(opcode);
if ((ocf == BT_CMD_MODULE_CFG_REQ) &&
(priv->btmrvl_dev.sendcmdflag)) {
priv->btmrvl_dev.sendcmdflag = false;
priv->adapter->cmd_complete = true;
wake_up_interruptible(&priv->adapter->cmd_wait_q);
}
}
BT_DBG("Leave");
}
EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
{
struct btmrvl_adapter *adapter = priv->adapter;
u8 ret = 0;
struct btmrvl_event *event;
BT_DBG("Enter");
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_CMD_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_CMD_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_CMD_HOST_SLEEP_ENABLE:
if (!event->data[1]) {
adapter->hs_state = HS_ACTIVATED;
if (adapter->psmode)
adapter->ps_state = PS_SLEEP;
wake_up_interruptible(&adapter->cmd_wait_q);
BT_DBG("HS ACTIVATED!");
} else {
BT_DBG("HS Enable failed");
}
break;
case BT_CMD_MODULE_CFG_REQ:
if ((priv->btmrvl_dev.sendcmdflag) &&
(event->data[1] == MODULE_BRINGUP_REQ)) {
BT_DBG("EVENT:%s", (event->data[2]) ?
"Bring-up failed" : "Bring-up succeed");
} 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);
BT_DBG("Leave");
return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_process_event);
int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
{
struct sk_buff *skb = NULL;
u8 ret = 0;
struct btmrvl_cmd *cmd;
BT_DBG("Enter");
skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
if (skb == NULL) {
BT_ERR("No free skb");
ret = -ENOMEM;
goto exit;
}
cmd = (struct btmrvl_cmd *) skb->tail;
cmd->ocf_ogf = cpu_to_le16((OGF << 10) | BT_CMD_MODULE_CFG_REQ);
cmd->length = 1;
cmd->data[0] = subcmd;
bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
skb_put(skb, sizeof(*cmd));
skb->dev = (void *)priv->btmrvl_dev.hcidev;
skb_queue_head(&priv->adapter->tx_queue, skb);
priv->btmrvl_dev.sendcmdflag = true;
priv->adapter->cmd_complete = false;
BT_DBG("Queue module cfg Command");
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))) {
ret = -ETIMEDOUT;
BT_ERR("module_cfg_cmd(%x): timeout: %d",
subcmd, priv->btmrvl_dev.sendcmdflag);
}
BT_DBG("module cfg Command done");
exit:
BT_DBG("Leave");
return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
static int btmrvl_enable_hs(struct btmrvl_private *priv)
{
struct sk_buff *skb = NULL;
u8 ret = 0;
struct btmrvl_cmd *cmd;
BT_DBG("Enter");
skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
if (skb == NULL) {
BT_ERR("No free skb");
ret = -ENOMEM;
goto exit;
}
cmd = (struct btmrvl_cmd *) skb->tail;
cmd->ocf_ogf = cpu_to_le16((OGF << 10) | BT_CMD_HOST_SLEEP_ENABLE);
cmd->length = 0;
bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
skb_put(skb, sizeof(*cmd));
skb->dev = (void *)priv->btmrvl_dev.hcidev;
skb_queue_head(&priv->adapter->tx_queue, skb);
BT_DBG("Queue hs enable Command");
wake_up_interruptible(&priv->main_thread.wait_q);
if (!wait_event_interruptible_timeout(
priv->adapter->cmd_wait_q,
priv->adapter->hs_state,
msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
ret = -ETIMEDOUT;
BT_ERR("timeout: %d, %d,%d",
priv->adapter->hs_state,
priv->adapter->ps_state,
priv->adapter->wakeup_tries);
}
exit:
BT_DBG("Leave");
return ret;
}
int btmrvl_prepare_command(struct btmrvl_private *priv)
{
struct sk_buff *skb = NULL;
u8 ret = 0;
struct btmrvl_cmd *cmd;
BT_DBG("Enter");
if (priv->btmrvl_dev.hscfgcmd) {
priv->btmrvl_dev.hscfgcmd = 0;
skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
if (skb == NULL) {
BT_ERR("No free skb");
ret = -ENOMEM;
goto exit;
}
cmd = (struct btmrvl_cmd *) skb->tail;
cmd->ocf_ogf = cpu_to_le16((OGF << 10) |
BT_CMD_HOST_SLEEP_CONFIG);
cmd->length = 2;
cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
skb_put(skb, sizeof(*cmd));
skb->dev = (void *)priv->btmrvl_dev.hcidev;
skb_queue_head(&priv->adapter->tx_queue, skb);
BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
cmd->data[0], cmd->data[1]);
}
if (priv->btmrvl_dev.pscmd) {
priv->btmrvl_dev.pscmd = 0;
skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
if (skb == NULL) {
BT_ERR("No free skb");
ret = -ENOMEM;
goto exit;
}
cmd = (struct btmrvl_cmd *) skb->tail;
cmd->ocf_ogf = cpu_to_le16((OGF << 10) |
BT_CMD_AUTO_SLEEP_MODE);
cmd->length = 1;
if (priv->btmrvl_dev.psmode)
cmd->data[0] = BT_PS_ENABLE;
else
cmd->data[0] = BT_PS_DISABLE;
bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
skb_put(skb, sizeof(*cmd));
skb->dev = (void *)priv->btmrvl_dev.hcidev;
skb_queue_head(&priv->adapter->tx_queue, skb);
BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
}
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;
}
}
exit:
BT_DBG("Leave");
return ret;
}
static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
u8 ret = 0;
BT_DBG("Enter");
if (!skb || !skb->data) {
BT_DBG("Leave");
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);
BT_DBG("Leave");
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;
BT_DBG("Leave");
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);
BT_DBG("Leave");
return ret;
}
static void btmrvl_init_adapter(struct btmrvl_private *priv)
{
BT_DBG("Enter");
skb_queue_head_init(&priv->adapter->tx_queue);
priv->adapter->ps_state = PS_AWAKE;
init_waitqueue_head(&priv->adapter->cmd_wait_q);
BT_DBG("Leave");
}
static void btmrvl_free_adapter(struct btmrvl_private *priv)
{
BT_DBG("Enter");
skb_queue_purge(&priv->adapter->tx_queue);
kfree(priv->adapter);
priv->adapter = NULL;
BT_DBG("Leave");
}
static int
btmrvl_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
{
BT_DBG("Enter");
BT_DBG("Leave");
return -ENOIOCTLCMD;
}
static void btmrvl_destruct(struct hci_dev *hdev)
{
BT_DBG("Enter");
BT_DBG("Leave");
}
static int btmrvl_send_frame(struct sk_buff *skb)
{
struct hci_dev *hdev = (struct hci_dev *)skb->dev;
struct btmrvl_private *priv = NULL;
BT_DBG("Enter: type=%d, len=%d", skb->pkt_type, skb->len);
if (!hdev || !hdev->driver_data) {
BT_ERR("Frame for unknown HCI device");
BT_DBG("Leave");
return -ENODEV;
}
priv = (struct btmrvl_private *)hdev->driver_data;
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);
BT_DBG("Leave");
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);
BT_DBG("Leave");
return 0;
}
static int btmrvl_flush(struct hci_dev *hdev)
{
struct btmrvl_private *priv =
(struct btmrvl_private *) hdev->driver_data;
BT_DBG("Enter");
skb_queue_purge(&priv->adapter->tx_queue);
BT_DBG("Leave");
return 0;
}
static int btmrvl_close(struct hci_dev *hdev)
{
struct btmrvl_private *priv =
(struct btmrvl_private *) hdev->driver_data;
BT_DBG("Enter");
if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) {
BT_DBG("Leave");
return 0;
}
skb_queue_purge(&priv->adapter->tx_queue);
BT_DBG("Leave");
return 0;
}
static int btmrvl_open(struct hci_dev *hdev)
{
BT_DBG("Enter");
set_bit(HCI_RUNNING, &hdev->flags);
BT_DBG("Leave");
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;
BT_DBG("Enter");
init_waitqueue_entry(&wait, current);
current->flags |= PF_NOFREEZE;
for (;;) {
add_wait_queue(&thread->wait_q, &wait);
set_current_state(TASK_INTERRUPTIBLE);
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");
if (kthread_should_stop()) {
BT_DBG("main_thread: break from main thread");
break;
}
spin_lock_irqsave(&priv->driver_lock, flags);
if (adapter->int_count) {
adapter->int_count = 0;
} 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;
}
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);
}
}
BT_DBG("Leave");
return 0;
}
struct btmrvl_private *btmrvl_add_card(void *card)
{
struct hci_dev *hdev = NULL;
struct btmrvl_private *priv = NULL;
int ret;
BT_DBG("Enter");
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);
hdev = hci_alloc_dev();
if (!hdev) {
BT_ERR("Can not allocate HCI device");
goto err_hdev;
}
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.hcidev = hdev;
priv->btmrvl_dev.card = card;
hdev->driver_data = priv;
priv->btmrvl_dev.tx_dnld_rdy = true;
hdev->type = HCI_SDIO;
hdev->open = btmrvl_open;
hdev->close = btmrvl_close;
hdev->flush = btmrvl_flush;
hdev->send = btmrvl_send_frame;
hdev->destruct = btmrvl_destruct;
hdev->ioctl = btmrvl_ioctl;
hdev->owner = THIS_MODULE;
ret = hci_register_dev(hdev);
if (ret < 0) {
BT_ERR("Can not register HCI device");
goto err_hci_register_dev;
}
BT_DBG("Leave");
return priv;
err_hci_register_dev:
/* Stop the thread servicing the interrupts */
kthread_stop(priv->main_thread.task);
hci_free_dev(hdev);
err_hdev:
btmrvl_free_adapter(priv);
err_adapter:
kfree(priv);
err_priv:
BT_DBG("Leave");
return NULL;
}
EXPORT_SYMBOL_GPL(btmrvl_add_card);
int btmrvl_remove_card(struct btmrvl_private *priv)
{
struct hci_dev *hdev;
BT_DBG("Enter");
hdev = priv->btmrvl_dev.hcidev;
wake_up_interruptible(&priv->adapter->cmd_wait_q);
kthread_stop(priv->main_thread.task);
hci_unregister_dev(hdev);
hci_free_dev(hdev);
priv->btmrvl_dev.hcidev = NULL;
btmrvl_free_adapter(priv);
kfree(priv);
BT_DBG("Leave");
return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_remove_card);
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION("Marvell Bluetooth Driver v" VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL v2");