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提交 4a5200ac 编写于 作者: P Pavan Savoy 提交者： Greg Kroah-Hartman
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drivers:staging: ti-st: delete old bt_drv driver 

point the new v7 driver to build if ST_BT is selected
in Makefile and delete the old bt_drv driver.
Signed-off-by: NPavan Savoy <pavan_savoy@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 97701688
隐藏空白更改
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Showing with 1 addition and 571 deletion
drivers/staging/ti-st/Makefile
浏览文件 @ 4a5200ac
......@@ -2,4 +2,4 @@
# Makefile for TI's shared transport line discipline
# and its protocol drivers (BT, FM, GPS)
#
obj-$(CONFIG_ST_BT) += bt_drv.o
obj-$(CONFIG_ST_BT) += btwilink.o
drivers/staging/ti-st/bt_drv.c 已删除 100644 → 0
浏览文件 @ 97701688
/*
* Texas Instrument's Bluetooth Driver For Shared Transport.
*
* Bluetooth Driver acts as interface between HCI CORE and
* TI Shared Transport Layer.
*
* Copyright (C) 2009 Texas Instruments
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <linux/ti_wilink_st.h>
#include "bt_drv.h"
/* Define this macro to get debug msg */
#undef DEBUG
#ifdef DEBUG
#define BT_DRV_DBG(fmt, arg...) printk(KERN_INFO "(btdrv):"fmt"\n" , ## arg)
#define BTDRV_API_START() printk(KERN_INFO "(btdrv): %s Start\n", \
__func__)
#define BTDRV_API_EXIT(errno) printk(KERN_INFO "(btdrv): %s Exit(%d)\n", \
__func__, errno)
#else
#define BT_DRV_DBG(fmt, arg...)
#define BTDRV_API_START()
#define BTDRV_API_EXIT(errno)
#endif
#define BT_DRV_ERR(fmt, arg...) printk(KERN_ERR "(btdrv):"fmt"\n" , ## arg)
static int reset;
static struct hci_st *hst;
/* Increments HCI counters based on pocket ID (cmd,acl,sco) */
static inline void hci_st_tx_complete(struct hci_st *hst, int pkt_type)
{
struct hci_dev *hdev;
BTDRV_API_START();
hdev = hst->hdev;
/* Update HCI stat counters */
switch (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.cmd_tx++;
break;
}
BTDRV_API_EXIT(0);
}
/* ------- Interfaces to Shared Transport ------ */
/* Called by ST layer to indicate protocol registration completion
* status.hci_st_open() function will wait for signal from this
* API when st_register() function returns ST_PENDING.
*/
static void hci_st_registration_completion_cb(void *priv_data, char data)
{
struct hci_st *lhst = (struct hci_st *)priv_data;
BTDRV_API_START();
/* hci_st_open() function needs value of 'data' to know
* the registration status(success/fail),So have a back
* up of it.
*/
lhst->streg_cbdata = data;
/* Got a feedback from ST for BT driver registration
* request.Wackup hci_st_open() function to continue
* it's open operation.
*/
complete(&lhst->wait_for_btdrv_reg_completion);
BTDRV_API_EXIT(0);
}
/* Called by Shared Transport layer when receive data is
* available */
static long hci_st_receive(void *priv_data, struct sk_buff *skb)
{
int err;
int len;
struct hci_st *lhst = (struct hci_st *)priv_data;
BTDRV_API_START();
err = 0;
len = 0;
if (skb == NULL) {
BT_DRV_ERR("Invalid SKB received from ST");
BTDRV_API_EXIT(-EFAULT);
return -EFAULT;
}
if (!lhst) {
kfree_skb(skb);
BT_DRV_ERR("Invalid hci_st memory,freeing SKB");
BTDRV_API_EXIT(-EFAULT);
return -EFAULT;
}
if (!test_bit(BT_DRV_RUNNING, &lhst->flags)) {
kfree_skb(skb);
BT_DRV_ERR("Device is not running,freeing SKB");
BTDRV_API_EXIT(-EINVAL);
return -EINVAL;
}
len = skb->len;
skb->dev = (struct net_device *)lhst->hdev;
/* Forward skb to HCI CORE layer */
err = hci_recv_frame(skb);
if (err) {
kfree_skb(skb);
BT_DRV_ERR("Unable to push skb to HCI CORE(%d),freeing SKB",
err);
BTDRV_API_EXIT(err);
return err;
}
lhst->hdev->stat.byte_rx += len;
BTDRV_API_EXIT(0);
return 0;
}
/* ------- Interfaces to HCI layer ------ */
/* Called from HCI core to initialize the device */
static int hci_st_open(struct hci_dev *hdev)
{
static struct st_proto_s hci_st_proto;
unsigned long timeleft;
int err;
BTDRV_API_START();
err = 0;
BT_DRV_DBG("%s %p", hdev->name, hdev);
/* Already registered with ST ? */
if (test_bit(BT_ST_REGISTERED, &hst->flags)) {
BT_DRV_ERR("Registered with ST already,open called again?");
BTDRV_API_EXIT(0);
return 0;
}
/* Populate BT driver info required by ST */
memset(&hci_st_proto, 0, sizeof(hci_st_proto));
/* BT driver ID */
hci_st_proto.type = ST_BT;
/* Receive function which called from ST */
hci_st_proto.recv = hci_st_receive;
/* Packet match function may used in future */
hci_st_proto.match_packet = NULL;
/* Callback to be called when registration is pending */
hci_st_proto.reg_complete_cb = hci_st_registration_completion_cb;
/* This is write function pointer of ST. BT driver will make use of this
* for sending any packets to chip. ST will assign and give to us, so
* make it as NULL */
hci_st_proto.write = NULL;
/* send in the hst to be received at registration complete callback
* and during st's receive
*/
hci_st_proto.priv_data = hst;
/* Register with ST layer */
err = st_register(&hci_st_proto);
if (err == -EINPROGRESS) {
/* Prepare wait-for-completion handler data structures.
* Needed to syncronize this and st_registration_completion_cb()
* functions.
*/
init_completion(&hst->wait_for_btdrv_reg_completion);
/* Reset ST registration callback status flag , this value
* will be updated in hci_st_registration_completion_cb()
* function whenever it called from ST driver.
*/
hst->streg_cbdata = -EINPROGRESS;
/* ST is busy with other protocol registration(may be busy with
* firmware download).So,Wait till the registration callback
* (passed as a argument to st_register() function) getting
* called from ST.
*/
BT_DRV_DBG(" %s waiting for reg completion signal from ST",
__func__);
timeleft =
wait_for_completion_timeout
(&hst->wait_for_btdrv_reg_completion,
msecs_to_jiffies(BT_REGISTER_TIMEOUT));
if (!timeleft) {
BT_DRV_ERR("Timeout(%ld sec),didn't get reg"
"completion signal from ST",
BT_REGISTER_TIMEOUT / 1000);
BTDRV_API_EXIT(-ETIMEDOUT);
return -ETIMEDOUT;
}
/* Is ST registration callback called with ERROR value? */
if (hst->streg_cbdata != 0) {
BT_DRV_ERR("ST reg completion CB called with invalid"
"status %d", hst->streg_cbdata);
BTDRV_API_EXIT(-EAGAIN);
return -EAGAIN;
}
err = 0;
} else if (err == -1) {
BT_DRV_ERR("st_register failed %d", err);
BTDRV_API_EXIT(-EAGAIN);
return -EAGAIN;
}
/* Do we have proper ST write function? */
if (hci_st_proto.write != NULL) {
/* We need this pointer for sending any Bluetooth pkts */
hst->st_write = hci_st_proto.write;
} else {
BT_DRV_ERR("failed to get ST write func pointer");
/* Undo registration with ST */
err = st_unregister(ST_BT);
if (err < 0)
BT_DRV_ERR("st_unregister failed %d", err);
hst->st_write = NULL;
BTDRV_API_EXIT(-EAGAIN);
return -EAGAIN;
}
/* Registration with ST layer is completed successfully,
* now chip is ready to accept commands from HCI CORE.
* Mark HCI Device flag as RUNNING
*/
set_bit(HCI_RUNNING, &hdev->flags);
/* Registration with ST successful */
set_bit(BT_ST_REGISTERED, &hst->flags);
BTDRV_API_EXIT(err);
return err;
}
/* Close device */
static int hci_st_close(struct hci_dev *hdev)
{
int err;
BTDRV_API_START();
err = 0;
/* Unregister from ST layer */
if (test_and_clear_bit(BT_ST_REGISTERED, &hst->flags)) {
err = st_unregister(ST_BT);
if (err != 0) {
BT_DRV_ERR("st_unregister failed %d", err);
BTDRV_API_EXIT(-EBUSY);
return -EBUSY;
}
}
hst->st_write = NULL;
/* ST layer would have moved chip to inactive state.
* So,clear HCI device RUNNING flag.
*/
if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) {
BTDRV_API_EXIT(0);
return 0;
}
BTDRV_API_EXIT(err);
return err;
}
/* Called from HCI CORE , Sends frames to Shared Transport */
static int hci_st_send_frame(struct sk_buff *skb)
{
struct hci_dev *hdev;
struct hci_st *hst;
long len;
BTDRV_API_START();
if (skb == NULL) {
BT_DRV_ERR("Invalid skb received from HCI CORE");
BTDRV_API_EXIT(-ENOMEM);
return -ENOMEM;
}
hdev = (struct hci_dev *)skb->dev;
if (!hdev) {
BT_DRV_ERR("SKB received for invalid HCI Device (hdev=NULL)");
BTDRV_API_EXIT(-ENODEV);
return -ENODEV;
}
if (!test_bit(HCI_RUNNING, &hdev->flags)) {
BT_DRV_ERR("Device is not running");
BTDRV_API_EXIT(-EBUSY);
return -EBUSY;
}
hst = (struct hci_st *)hdev->driver_data;
/* Prepend skb with frame type */
memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
BT_DRV_DBG(" %s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type,
skb->len);
/* Insert skb to shared transport layer's transmit queue.
* Freeing skb memory is taken care in shared transport layer,
* so don't free skb memory here.
*/
if (!hst->st_write) {
kfree_skb(skb);
BT_DRV_ERR(" Can't write to ST, st_write null?");
BTDRV_API_EXIT(-EAGAIN);
return -EAGAIN;
}
len = hst->st_write(skb);
if (len < 0) {
/* Something went wrong in st write , free skb memory */
kfree_skb(skb);
BT_DRV_ERR(" ST write failed (%ld)", len);
BTDRV_API_EXIT(-EAGAIN);
return -EAGAIN;
}
/* ST accepted our skb. So, Go ahead and do rest */
hdev->stat.byte_tx += len;
hci_st_tx_complete(hst, bt_cb(skb)->pkt_type);
BTDRV_API_EXIT(0);
return 0;
}
static void hci_st_destruct(struct hci_dev *hdev)
{
BTDRV_API_START();
if (!hdev) {
BT_DRV_ERR("Destruct called with invalid HCI Device"
"(hdev=NULL)");
BTDRV_API_EXIT(0);
return;
}
BT_DRV_DBG("%s", hdev->name);
/* free hci_st memory */
if (hdev->driver_data != NULL)
kfree(hdev->driver_data);
BTDRV_API_EXIT(0);
return;
}
/* Creates new HCI device */
static int hci_st_register_dev(struct hci_st *hst)
{
struct hci_dev *hdev;
BTDRV_API_START();
/* Initialize and register HCI device */
hdev = hci_alloc_dev();
if (!hdev) {
BT_DRV_ERR("Can't allocate HCI device");
BTDRV_API_EXIT(-ENOMEM);
return -ENOMEM;
}
BT_DRV_DBG(" HCI device allocated. hdev= %p", hdev);
hst->hdev = hdev;
hdev->bus = HCI_UART;
hdev->driver_data = hst;
hdev->open = hci_st_open;
hdev->close = hci_st_close;
hdev->flush = NULL;
hdev->send = hci_st_send_frame;
hdev->destruct = hci_st_destruct;
hdev->owner = THIS_MODULE;
if (reset)
set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
if (hci_register_dev(hdev) < 0) {
BT_DRV_ERR("Can't register HCI device");
hci_free_dev(hdev);
BTDRV_API_EXIT(-ENODEV);
return -ENODEV;
}
BT_DRV_DBG(" HCI device registered. hdev= %p", hdev);
BTDRV_API_EXIT(0);
return 0;
}
/* ------- Module Init interface ------ */
static int __init bt_drv_init(void)
{
int err;
BTDRV_API_START();
err = 0;
BT_DRV_DBG(" Bluetooth Driver Version %s", VERSION);
/* Allocate local resource memory */
hst = kzalloc(sizeof(struct hci_st), GFP_KERNEL);
if (!hst) {
BT_DRV_ERR("Can't allocate control structure");
BTDRV_API_EXIT(-ENFILE);
return -ENFILE;
}
/* Expose "hciX" device to user space */
err = hci_st_register_dev(hst);
if (err) {
/* Release local resource memory */
kfree(hst);
BT_DRV_ERR("Unable to expose hci0 device(%d)", err);
BTDRV_API_EXIT(err);
return err;
}
set_bit(BT_DRV_RUNNING, &hst->flags);
BTDRV_API_EXIT(err);
return err;
}
/* ------- Module Exit interface ------ */
static void __exit bt_drv_exit(void)
{
BTDRV_API_START();
/* Deallocate local resource's memory */
if (hst) {
struct hci_dev *hdev = hst->hdev;
if (hdev == NULL) {
BT_DRV_ERR("Invalid hdev memory");
kfree(hst);
} else {
hci_st_close(hdev);
if (test_and_clear_bit(BT_DRV_RUNNING, &hst->flags)) {
/* Remove HCI device (hciX) created
* in module init.
*/
hci_unregister_dev(hdev);
/* Free HCI device memory */
hci_free_dev(hdev);
}
}
}
BTDRV_API_EXIT(0);
}
module_init(bt_drv_init);
module_exit(bt_drv_exit);
/* ------ Module Info ------ */
module_param(reset, bool, 0644);
MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
MODULE_AUTHOR("Raja Mani <raja_mani@ti.com>");
MODULE_DESCRIPTION("Bluetooth Driver for TI Shared Transport" VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
drivers/staging/ti-st/bt_drv.h 已删除 100644 → 0
浏览文件 @ 97701688
/*
* Texas Instrument's Bluetooth Driver For Shared Transport.
*
* Bluetooth Driver acts as interface between HCI CORE and
* TI Shared Transport Layer.
*
* Copyright (C) 2009 Texas Instruments
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _BT_DRV_H
#define _BT_DRV_H
/* Bluetooth Driver Version */
#define VERSION "1.0"
/* Defines number of seconds to wait for reg completion
* callback getting called from ST (in case,registration
* with ST returns PENDING status)
*/
#define BT_REGISTER_TIMEOUT msecs_to_jiffies(6000) /* 6 sec */
/* BT driver's local status */
#define BT_DRV_RUNNING 0
#define BT_ST_REGISTERED 1
/* BT driver operation structure */
struct hci_st {
/* hci device pointer which binds to bt driver */
struct hci_dev *hdev;
/* used locally,to maintain various BT driver status */
unsigned long flags;
/* to hold ST registration callback status */
char streg_cbdata;
/* write function pointer of ST driver */
long (*st_write) (struct sk_buff *);
/* Wait on comepletion handler needed to synchronize
* hci_st_open() and hci_st_registration_completion_cb()
* functions.*/
struct completion wait_for_btdrv_reg_completion;
};
#endif
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