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: Pavan Savoy <pavan_savoy@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Pavan Savoy
Greg Kroah-Hartman
parent
977016882d
commit
4a5200ac8b
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@ -2,4 +2,4 @@
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# Makefile for TI's shared transport line discipline
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# Makefile for TI's shared transport line discipline
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# and its protocol drivers (BT, FM, GPS)
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# and its protocol drivers (BT, FM, GPS)
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#
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#
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obj-$(CONFIG_ST_BT) += bt_drv.o
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obj-$(CONFIG_ST_BT) += btwilink.o
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@ -1,509 +0,0 @@
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/*
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* Texas Instrument's Bluetooth Driver For Shared Transport.
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*
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* Bluetooth Driver acts as interface between HCI CORE and
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* TI Shared Transport Layer.
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*
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* Copyright (C) 2009 Texas Instruments
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include <linux/ti_wilink_st.h>
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#include "bt_drv.h"
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/* Define this macro to get debug msg */
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#undef DEBUG
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#ifdef DEBUG
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#define BT_DRV_DBG(fmt, arg...) printk(KERN_INFO "(btdrv):"fmt"\n" , ## arg)
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#define BTDRV_API_START() printk(KERN_INFO "(btdrv): %s Start\n", \
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__func__)
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#define BTDRV_API_EXIT(errno) printk(KERN_INFO "(btdrv): %s Exit(%d)\n", \
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__func__, errno)
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#else
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#define BT_DRV_DBG(fmt, arg...)
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#define BTDRV_API_START()
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#define BTDRV_API_EXIT(errno)
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#endif
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#define BT_DRV_ERR(fmt, arg...) printk(KERN_ERR "(btdrv):"fmt"\n" , ## arg)
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static int reset;
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static struct hci_st *hst;
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/* Increments HCI counters based on pocket ID (cmd,acl,sco) */
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static inline void hci_st_tx_complete(struct hci_st *hst, int pkt_type)
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{
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struct hci_dev *hdev;
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BTDRV_API_START();
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hdev = hst->hdev;
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/* Update HCI stat counters */
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switch (pkt_type) {
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case HCI_COMMAND_PKT:
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hdev->stat.cmd_tx++;
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break;
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case HCI_ACLDATA_PKT:
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hdev->stat.acl_tx++;
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break;
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case HCI_SCODATA_PKT:
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hdev->stat.cmd_tx++;
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break;
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}
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BTDRV_API_EXIT(0);
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}
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/* ------- Interfaces to Shared Transport ------ */
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/* Called by ST layer to indicate protocol registration completion
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* status.hci_st_open() function will wait for signal from this
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* API when st_register() function returns ST_PENDING.
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*/
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static void hci_st_registration_completion_cb(void *priv_data, char data)
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{
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struct hci_st *lhst = (struct hci_st *)priv_data;
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BTDRV_API_START();
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/* hci_st_open() function needs value of 'data' to know
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* the registration status(success/fail),So have a back
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* up of it.
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*/
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lhst->streg_cbdata = data;
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/* Got a feedback from ST for BT driver registration
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* request.Wackup hci_st_open() function to continue
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* it's open operation.
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*/
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complete(&lhst->wait_for_btdrv_reg_completion);
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BTDRV_API_EXIT(0);
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}
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/* Called by Shared Transport layer when receive data is
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* available */
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static long hci_st_receive(void *priv_data, struct sk_buff *skb)
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{
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int err;
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int len;
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struct hci_st *lhst = (struct hci_st *)priv_data;
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BTDRV_API_START();
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err = 0;
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len = 0;
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if (skb == NULL) {
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BT_DRV_ERR("Invalid SKB received from ST");
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BTDRV_API_EXIT(-EFAULT);
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return -EFAULT;
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}
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if (!lhst) {
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kfree_skb(skb);
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BT_DRV_ERR("Invalid hci_st memory,freeing SKB");
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BTDRV_API_EXIT(-EFAULT);
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return -EFAULT;
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}
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if (!test_bit(BT_DRV_RUNNING, &lhst->flags)) {
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kfree_skb(skb);
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BT_DRV_ERR("Device is not running,freeing SKB");
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BTDRV_API_EXIT(-EINVAL);
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return -EINVAL;
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}
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len = skb->len;
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skb->dev = (struct net_device *)lhst->hdev;
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/* Forward skb to HCI CORE layer */
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err = hci_recv_frame(skb);
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if (err) {
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kfree_skb(skb);
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BT_DRV_ERR("Unable to push skb to HCI CORE(%d),freeing SKB",
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err);
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BTDRV_API_EXIT(err);
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return err;
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}
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lhst->hdev->stat.byte_rx += len;
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BTDRV_API_EXIT(0);
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return 0;
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}
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/* ------- Interfaces to HCI layer ------ */
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/* Called from HCI core to initialize the device */
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static int hci_st_open(struct hci_dev *hdev)
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{
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static struct st_proto_s hci_st_proto;
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unsigned long timeleft;
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int err;
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BTDRV_API_START();
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err = 0;
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BT_DRV_DBG("%s %p", hdev->name, hdev);
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/* Already registered with ST ? */
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if (test_bit(BT_ST_REGISTERED, &hst->flags)) {
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BT_DRV_ERR("Registered with ST already,open called again?");
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BTDRV_API_EXIT(0);
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return 0;
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}
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/* Populate BT driver info required by ST */
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memset(&hci_st_proto, 0, sizeof(hci_st_proto));
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/* BT driver ID */
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hci_st_proto.type = ST_BT;
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/* Receive function which called from ST */
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hci_st_proto.recv = hci_st_receive;
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/* Packet match function may used in future */
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hci_st_proto.match_packet = NULL;
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/* Callback to be called when registration is pending */
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hci_st_proto.reg_complete_cb = hci_st_registration_completion_cb;
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/* This is write function pointer of ST. BT driver will make use of this
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* for sending any packets to chip. ST will assign and give to us, so
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* make it as NULL */
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hci_st_proto.write = NULL;
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/* send in the hst to be received at registration complete callback
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* and during st's receive
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*/
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hci_st_proto.priv_data = hst;
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/* Register with ST layer */
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err = st_register(&hci_st_proto);
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if (err == -EINPROGRESS) {
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/* Prepare wait-for-completion handler data structures.
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* Needed to syncronize this and st_registration_completion_cb()
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* functions.
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*/
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init_completion(&hst->wait_for_btdrv_reg_completion);
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/* Reset ST registration callback status flag , this value
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* will be updated in hci_st_registration_completion_cb()
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* function whenever it called from ST driver.
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*/
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hst->streg_cbdata = -EINPROGRESS;
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/* ST is busy with other protocol registration(may be busy with
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* firmware download).So,Wait till the registration callback
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* (passed as a argument to st_register() function) getting
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* called from ST.
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*/
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BT_DRV_DBG(" %s waiting for reg completion signal from ST",
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__func__);
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timeleft =
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wait_for_completion_timeout
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(&hst->wait_for_btdrv_reg_completion,
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msecs_to_jiffies(BT_REGISTER_TIMEOUT));
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if (!timeleft) {
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BT_DRV_ERR("Timeout(%ld sec),didn't get reg"
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"completion signal from ST",
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BT_REGISTER_TIMEOUT / 1000);
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BTDRV_API_EXIT(-ETIMEDOUT);
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return -ETIMEDOUT;
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}
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/* Is ST registration callback called with ERROR value? */
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if (hst->streg_cbdata != 0) {
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BT_DRV_ERR("ST reg completion CB called with invalid"
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"status %d", hst->streg_cbdata);
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BTDRV_API_EXIT(-EAGAIN);
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return -EAGAIN;
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}
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err = 0;
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} else if (err == -1) {
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BT_DRV_ERR("st_register failed %d", err);
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BTDRV_API_EXIT(-EAGAIN);
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return -EAGAIN;
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}
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/* Do we have proper ST write function? */
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if (hci_st_proto.write != NULL) {
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/* We need this pointer for sending any Bluetooth pkts */
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hst->st_write = hci_st_proto.write;
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} else {
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BT_DRV_ERR("failed to get ST write func pointer");
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/* Undo registration with ST */
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err = st_unregister(ST_BT);
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if (err < 0)
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BT_DRV_ERR("st_unregister failed %d", err);
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hst->st_write = NULL;
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BTDRV_API_EXIT(-EAGAIN);
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return -EAGAIN;
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}
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/* Registration with ST layer is completed successfully,
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* now chip is ready to accept commands from HCI CORE.
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* Mark HCI Device flag as RUNNING
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*/
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set_bit(HCI_RUNNING, &hdev->flags);
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/* Registration with ST successful */
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set_bit(BT_ST_REGISTERED, &hst->flags);
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BTDRV_API_EXIT(err);
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return err;
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}
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/* Close device */
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static int hci_st_close(struct hci_dev *hdev)
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{
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int err;
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BTDRV_API_START();
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err = 0;
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/* Unregister from ST layer */
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if (test_and_clear_bit(BT_ST_REGISTERED, &hst->flags)) {
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err = st_unregister(ST_BT);
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if (err != 0) {
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BT_DRV_ERR("st_unregister failed %d", err);
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BTDRV_API_EXIT(-EBUSY);
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return -EBUSY;
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}
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}
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hst->st_write = NULL;
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/* ST layer would have moved chip to inactive state.
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* So,clear HCI device RUNNING flag.
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*/
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if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) {
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BTDRV_API_EXIT(0);
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return 0;
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}
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BTDRV_API_EXIT(err);
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return err;
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}
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/* Called from HCI CORE , Sends frames to Shared Transport */
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static int hci_st_send_frame(struct sk_buff *skb)
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{
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struct hci_dev *hdev;
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struct hci_st *hst;
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long len;
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BTDRV_API_START();
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if (skb == NULL) {
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BT_DRV_ERR("Invalid skb received from HCI CORE");
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BTDRV_API_EXIT(-ENOMEM);
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return -ENOMEM;
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}
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hdev = (struct hci_dev *)skb->dev;
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if (!hdev) {
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BT_DRV_ERR("SKB received for invalid HCI Device (hdev=NULL)");
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BTDRV_API_EXIT(-ENODEV);
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return -ENODEV;
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}
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if (!test_bit(HCI_RUNNING, &hdev->flags)) {
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BT_DRV_ERR("Device is not running");
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BTDRV_API_EXIT(-EBUSY);
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return -EBUSY;
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}
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hst = (struct hci_st *)hdev->driver_data;
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/* Prepend skb with frame type */
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memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
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BT_DRV_DBG(" %s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type,
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skb->len);
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/* Insert skb to shared transport layer's transmit queue.
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* Freeing skb memory is taken care in shared transport layer,
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* so don't free skb memory here.
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*/
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if (!hst->st_write) {
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kfree_skb(skb);
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BT_DRV_ERR(" Can't write to ST, st_write null?");
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BTDRV_API_EXIT(-EAGAIN);
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return -EAGAIN;
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}
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len = hst->st_write(skb);
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if (len < 0) {
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/* Something went wrong in st write , free skb memory */
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kfree_skb(skb);
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BT_DRV_ERR(" ST write failed (%ld)", len);
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BTDRV_API_EXIT(-EAGAIN);
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return -EAGAIN;
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}
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/* ST accepted our skb. So, Go ahead and do rest */
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hdev->stat.byte_tx += len;
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hci_st_tx_complete(hst, bt_cb(skb)->pkt_type);
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BTDRV_API_EXIT(0);
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return 0;
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}
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static void hci_st_destruct(struct hci_dev *hdev)
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{
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BTDRV_API_START();
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if (!hdev) {
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BT_DRV_ERR("Destruct called with invalid HCI Device"
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"(hdev=NULL)");
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BTDRV_API_EXIT(0);
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return;
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}
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BT_DRV_DBG("%s", hdev->name);
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/* free hci_st memory */
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||||||
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");
|
|
||||||
|
|
@ -1,61 +0,0 @@
|
||||||
/*
|
|
||||||
* 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
|
|
||||||
Loading…
Reference in New Issue