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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: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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5 changed files with 112 additions and 0 deletions
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@ -81,6 +81,18 @@ config BT_HCIUART_LL
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Say Y here to compile support for HCILL protocol.
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Say Y here to compile support for HCILL protocol.
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config BT_HCIUART_3WIRE
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bool "Three-wire UART (H5) protocol support"
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depends on BT_HCIUART
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help
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The HCI Three-wire UART Transport Layer makes it possible to
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user the Bluetooth HCI over a serial port interface. The HCI
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Three-wire UART Transport Layer assumes that the UART
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communication may have bit errors, overrun errors or burst
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errors and thereby making CTS/RTS lines unnecessary.
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Say Y here to compile support for Three-wire UART protocol.
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config BT_HCIBCM203X
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config BT_HCIBCM203X
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tristate "HCI BCM203x USB driver"
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tristate "HCI BCM203x USB driver"
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depends on USB
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depends on USB
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@ -28,4 +28,5 @@ hci_uart-$(CONFIG_BT_HCIUART_H4) += hci_h4.o
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hci_uart-$(CONFIG_BT_HCIUART_BCSP) += hci_bcsp.o
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hci_uart-$(CONFIG_BT_HCIUART_BCSP) += hci_bcsp.o
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hci_uart-$(CONFIG_BT_HCIUART_LL) += hci_ll.o
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hci_uart-$(CONFIG_BT_HCIUART_LL) += hci_ll.o
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hci_uart-$(CONFIG_BT_HCIUART_ATH3K) += hci_ath.o
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hci_uart-$(CONFIG_BT_HCIUART_ATH3K) += hci_ath.o
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hci_uart-$(CONFIG_BT_HCIUART_3WIRE) += hci_h5.o
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hci_uart-objs := $(hci_uart-y)
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hci_uart-objs := $(hci_uart-y)
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88
drivers/bluetooth/hci_h5.c
Normal file
88
drivers/bluetooth/hci_h5.c
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@ -0,0 +1,88 @@
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/*
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*
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* Bluetooth HCI Three-wire UART driver
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*
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* Copyright (C) 2012 Intel Corporation
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*
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/skbuff.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "hci_uart.h"
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static int h5_open(struct hci_uart *hu)
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{
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return -ENOSYS;
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}
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static int h5_close(struct hci_uart *hu)
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{
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return -ENOSYS;
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}
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static int h5_recv(struct hci_uart *hu, void *data, int count)
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{
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return -ENOSYS;
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}
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static int h5_enqueue(struct hci_uart *hu, struct sk_buff *skb)
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{
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return -ENOSYS;
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}
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static struct sk_buff *h5_dequeue(struct hci_uart *hu)
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{
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return NULL;
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}
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static int h5_flush(struct hci_uart *hu)
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{
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return -ENOSYS;
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}
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static struct hci_uart_proto h5p = {
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.id = HCI_UART_3WIRE,
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.open = h5_open,
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.close = h5_close,
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.recv = h5_recv,
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.enqueue = h5_enqueue,
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.dequeue = h5_dequeue,
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.flush = h5_flush,
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};
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int __init h5_init(void)
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{
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int err = hci_uart_register_proto(&h5p);
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if (!err)
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BT_INFO("HCI Three-wire UART (H5) protocol initialized");
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else
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BT_ERR("HCI Three-wire UART (H5) protocol init failed");
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return err;
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}
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int __exit h5_deinit(void)
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{
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return hci_uart_unregister_proto(&h5p);
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}
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@ -558,6 +558,9 @@ static int __init hci_uart_init(void)
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#ifdef CONFIG_BT_HCIUART_ATH3K
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#ifdef CONFIG_BT_HCIUART_ATH3K
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ath_init();
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ath_init();
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#endif
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#endif
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#ifdef CONFIG_BT_HCIUART_3WIRE
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h5_init();
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#endif
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return 0;
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return 0;
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}
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}
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@ -578,6 +581,9 @@ static void __exit hci_uart_exit(void)
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#ifdef CONFIG_BT_HCIUART_ATH3K
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#ifdef CONFIG_BT_HCIUART_ATH3K
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ath_deinit();
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ath_deinit();
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#endif
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#endif
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#ifdef CONFIG_BT_HCIUART_3WIRE
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h5_deinit();
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#endif
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/* Release tty registration of line discipline */
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/* Release tty registration of line discipline */
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if ((err = tty_unregister_ldisc(N_HCI)))
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if ((err = tty_unregister_ldisc(N_HCI)))
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@ -104,3 +104,8 @@ int ll_deinit(void);
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int ath_init(void);
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int ath_init(void);
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int ath_deinit(void);
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int ath_deinit(void);
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#endif
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#endif
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#ifdef CONFIG_BT_HCIUART_3WIRE
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int h5_init(void);
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int h5_deinit(void);
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#endif
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