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

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

drivers/bluetooth/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -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

drivers/bluetooth/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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)

drivers/bluetooth/hci_h5.c

0 → 100644
+88 −0
Original line number Diff line number Diff line 
/*

 *

 *  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);

}

drivers/bluetooth/hci_ldisc.c

+6 −0
Original line number Diff line number Diff line
@@ -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)))

drivers/bluetooth/hci_uart.h

+5 −0
Original line number Diff line number Diff line
@@ -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