Commit 7dec65c8 authored by Johan Hedberg's avatar Johan Hedberg Committed by Gustavo Padovan

Bluetooth: Initial skeleton for Three-wire UART (H5) support

This patch adds the initial skeleton for Three-wire UART (H5) support
and hooks it up to the HCI UART framework.
Signed-off-by: default avatarJohan Hedberg <johan.hedberg@intel.com>
Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
parent 83ce9a06
......@@ -81,6 +81,18 @@ config BT_HCIUART_LL
Say Y here to compile support for HCILL protocol.
config BT_HCIUART_3WIRE
bool "Three-wire UART (H5) protocol support"
depends on BT_HCIUART
help
The HCI Three-wire UART Transport Layer makes it possible to
user the Bluetooth HCI over a serial port interface. The HCI
Three-wire UART Transport Layer assumes that the UART
communication may have bit errors, overrun errors or burst
errors and thereby making CTS/RTS lines unnecessary.
Say Y here to compile support for Three-wire UART protocol.
config BT_HCIBCM203X
tristate "HCI BCM203x USB driver"
depends on USB
......
......@@ -28,4 +28,5 @@ hci_uart-$(CONFIG_BT_HCIUART_H4) += hci_h4.o
hci_uart-$(CONFIG_BT_HCIUART_BCSP) += hci_bcsp.o
hci_uart-$(CONFIG_BT_HCIUART_LL) += hci_ll.o
hci_uart-$(CONFIG_BT_HCIUART_ATH3K) += hci_ath.o
hci_uart-$(CONFIG_BT_HCIUART_3WIRE) += hci_h5.o
hci_uart-objs := $(hci_uart-y)
/*
*
* Bluetooth HCI Three-wire UART driver
*
* Copyright (C) 2012 Intel Corporation
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <linux/kernel.h>
#include <linux/errno.h>
#include <linux/skbuff.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "hci_uart.h"
static int h5_open(struct hci_uart *hu)
{
return -ENOSYS;
}
static int h5_close(struct hci_uart *hu)
{
return -ENOSYS;
}
static int h5_recv(struct hci_uart *hu, void *data, int count)
{
return -ENOSYS;
}
static int h5_enqueue(struct hci_uart *hu, struct sk_buff *skb)
{
return -ENOSYS;
}
static struct sk_buff *h5_dequeue(struct hci_uart *hu)
{
return NULL;
}
static int h5_flush(struct hci_uart *hu)
{
return -ENOSYS;
}
static struct hci_uart_proto h5p = {
.id = HCI_UART_3WIRE,
.open = h5_open,
.close = h5_close,
.recv = h5_recv,
.enqueue = h5_enqueue,
.dequeue = h5_dequeue,
.flush = h5_flush,
};
int __init h5_init(void)
{
int err = hci_uart_register_proto(&h5p);
if (!err)
BT_INFO("HCI Three-wire UART (H5) protocol initialized");
else
BT_ERR("HCI Three-wire UART (H5) protocol init failed");
return err;
}
int __exit h5_deinit(void)
{
return hci_uart_unregister_proto(&h5p);
}
......@@ -558,6 +558,9 @@ static int __init hci_uart_init(void)
#ifdef CONFIG_BT_HCIUART_ATH3K
ath_init();
#endif
#ifdef CONFIG_BT_HCIUART_3WIRE
h5_init();
#endif
return 0;
}
......@@ -578,6 +581,9 @@ static void __exit hci_uart_exit(void)
#ifdef CONFIG_BT_HCIUART_ATH3K
ath_deinit();
#endif
#ifdef CONFIG_BT_HCIUART_3WIRE
h5_deinit();
#endif
/* Release tty registration of line discipline */
if ((err = tty_unregister_ldisc(N_HCI)))
......
......@@ -104,3 +104,8 @@ int ll_deinit(void);
int ath_init(void);
int ath_deinit(void);
#endif
#ifdef CONFIG_BT_HCIUART_3WIRE
int h5_init(void);
int h5_deinit(void);
#endif
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