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Commit 4f3cc422 authored by Rupesh Tatiya's avatar Rupesh Tatiya
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Bluetooth: add Qualcomm In-Band Sleep support to hci_uart 



Add new HCIUART protocol HCIUART_IBS which enables the Bluetooth
device to enter a low power state when possible.  It also tells
the msm_serial_hs UART driver that it may go to a low-power state
even though the port is open.

This code was originally written by Mike Feldman in
project: kernel/msm branch: android-msm-2.6.29b
commit: 81fda6eb1b506a36bcdbbe77a59b6fe82c997568 (Bluetooth:
add Qualcomm In-Band Sleep support to hci_uart).

CRs-Fixed: 713897
Change-Id: I18207f076c9fb39c04275a8db2625a2d31bb0ae2
Git-commit: 81fda6eb1b506a36bcdbbe77a59b6fe82c997568
[ananthk@codeaurora.org: Resolved merge conflicts]
Signed-off-by: default avatarAnantha Krishnan <ananthk@codeaurora.org>
Signed-off-by: default avatarRupesh Tatiya <rtatiya@codeaurora.org>
parent f108fc85

drivers/bluetooth/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -94,6 +94,17 @@ config BT_HCIUART_3WIRE 


	  Say Y here to compile support for Three-wire UART protocol.



config BT_HCIUART_IBS

	bool "HCI_IBS protocol support"

	depends on BT_HCIUART

	default n

	help

	  HCI_IBS (HCI In-Band Sleep) is a serial protocol for communication

	  between Bluetooth device and host. This protocol is required for

	  UART clock control for some Qualcomm Bluetooth devices.



	  Say Y here to compile support for HCI_IBS 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
@@ -30,6 +30,7 @@ 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-$(CONFIG_BT_HCIUART_IBS)	+= hci_ibs.o

hci_uart-objs				:= $(hci_uart-y)



ccflags-y += -D__CHECK_ENDIAN__

drivers/bluetooth/hci_ibs.c

0 → 100644
+816 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/bluetooth/hci_ldisc.c

+7 −1
Original line number Diff line number Diff line
@@ -2,9 +2,9 @@ 
 *

 *  Bluetooth HCI UART driver

 *

 *  Copyright (C) 2000-2001  Qualcomm Incorporated

 *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>

 *  Copyright (C) 2004-2005  Marcel Holtmann <marcel@holtmann.org>

 *  Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.

 *

 *

 *  This program is free software; you can redistribute it and/or modify
@@ -625,6 +625,9 @@ static int __init hci_uart_init(void) 
#ifdef CONFIG_BT_HCIUART_3WIRE

	h5_init();

#endif

#ifdef CONFIG_BT_HCIUART_IBS

	ibs_init();

#endif



	return 0;

}
@@ -648,6 +651,9 @@ static void __exit hci_uart_exit(void) 
#ifdef CONFIG_BT_HCIUART_3WIRE

	h5_deinit();

#endif

#ifdef CONFIG_BT_HCIUART_IBS

	ibs_deinit();

#endif



	/* Release tty registration of line discipline */

	err = tty_unregister_ldisc(N_HCI);

drivers/bluetooth/hci_uart.h

+7 −1
Original line number Diff line number Diff line
@@ -2,9 +2,9 @@ 
 *

 *  Bluetooth HCI UART driver

 *

 *  Copyright (C) 2000-2001  Qualcomm Incorporated

 *  Copyright (C) 2002-2003  Maxim Krasnyansky <maxk@qualcomm.com>

 *  Copyright (C) 2004-2005  Marcel Holtmann <marcel@holtmann.org>

 *  Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.

 *

 *

 *  This program is free software; you can redistribute it and/or modify
@@ -43,6 +43,7 @@ 
#define HCI_UART_H4DS	3

#define HCI_UART_LL	4

#define HCI_UART_ATH3K	5

#define HCI_UART_IBS	6



#define HCI_UART_RAW_DEVICE	0

#define HCI_UART_RESET_ON_INIT	1
@@ -116,3 +117,8 @@ int ath_deinit(void); 
int h5_init(void);

int h5_deinit(void);

#endif



#ifdef CONFIG_BT_HCIUART_IBS

int ibs_init(void);

int ibs_deinit(void);

#endif