Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 53618cc1 authored by Pavan Savoy's avatar Pavan Savoy Committed by Greg Kroah-Hartman
Browse files

Staging: sources for ST core 



Texas Instruments BT, FM and GPS combo chips/drivers
make use of a single TTY to communicate with the chip.
This module constitutes the core logic, TTY ldisc driver
and the exported symbols for registering/unregistering of
the protocol drivers such as BT/FM/GPS.

Signed-off-by: default avatarPavan Savoy <pavan_savoy@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent fb2a8c88

drivers/staging/ti-st/st_core.c

0 → 100644
+1062 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/staging/ti-st/st_core.h

0 → 100644
+98 −0
Original line number Diff line number Diff line 
/*

 *  Shared Transport Core header file

 *

 *  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 ST_CORE_H

#define ST_CORE_H



#include <linux/skbuff.h>

#include "st.h"



/* states of protocol list */

#define ST_NOTEMPTY	1

#define ST_EMPTY	0



/*

 * possible st_states

 */

#define ST_INITIALIZING		1

#define ST_REG_IN_PROGRESS	2

#define ST_REG_PENDING		3

#define ST_WAITING_FOR_RESP	4



/*

 * local data required for ST/KIM/ST-HCI-LL

 */

struct st_data_s {

	unsigned long st_state;

/*

 * an instance of tty_struct & ldisc ops to move around

 */

	struct tty_struct *tty;

	struct tty_ldisc_ops *ldisc_ops;

/*

 * the tx skb -

 * if the skb is already dequeued and the tty failed to write the same

 * maintain the skb to write in the next transaction

 */

	struct sk_buff *tx_skb;

#define ST_TX_SENDING	1

#define ST_TX_WAKEUP	2

	unsigned long tx_state;

/*

 * list of protocol registered

 */

	struct st_proto_s *list[ST_MAX];

/*

 * lock

 */

	unsigned long rx_state;

	unsigned long rx_count;

	struct sk_buff *rx_skb;

	struct sk_buff_head txq, tx_waitq;

	spinlock_t lock;	/* ST LL state lock  */

	unsigned char	protos_registered;

	unsigned long ll_state;	/* ST LL power state */

};



/* point this to tty->driver->write or tty->ops->write

 * depending upon the kernel version

 */

int st_int_write(struct st_data_s*, const unsigned char*, int);

/* internal write function, passed onto protocol drivers

 * via the write function ptr of protocol struct

 */

long st_write(struct sk_buff *);

/* function to be called from ST-LL

 */

void st_ll_send_frame(enum proto_type, struct sk_buff *);

/* internal wake up function */

void st_tx_wakeup(struct st_data_s *st_data);



int st_core_init(struct st_data_s **);

void st_core_exit(struct st_data_s *);

void st_kim_ref(struct st_data_s **);



#define GPS_STUB_TEST

#ifdef GPS_STUB_TEST

int gps_chrdrv_stub_write(const unsigned char*, int);

void gps_chrdrv_stub_init(void);

#endif



#endif /*ST_CORE_H */