![Pavan Savoy](/assets/img/avatar_default.png)
Texas Instruments BT, FM and GPS combo chips/drivers make use of a single TTY to communicate with the chip. This is the common header file for both the ST driver and the protocol drivers which intend to use ST as their mode of transport. Signed-off-by: Pavan Savoy <pavan_savoy@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/*
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* Shared Transport Header file
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* To be included by the protocol stack drivers for
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* Texas Instruments BT,FM and GPS combo chip drivers
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*
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* Copyright (C) 2009 Texas Instruments
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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 version 2 as
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* published by the Free Software Foundation.
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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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#ifndef ST_H
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#define ST_H
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#include <linux/skbuff.h>
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/*
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* st.h
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*/
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/* TODO:
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* Move the following to tty.h upon acceptance
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*/
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#define N_TI_WL 20 /* Ldisc for TI's WL BT, FM, GPS combo chips */
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/* some gpios have active high, others like fm have
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* active low
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*/
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enum kim_gpio_state {
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KIM_GPIO_INACTIVE,
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KIM_GPIO_ACTIVE,
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};
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/*
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* the list of protocols on chip
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*/
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enum proto_type {
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ST_BT,
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ST_FM,
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ST_GPS,
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ST_MAX,
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};
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enum {
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ST_ERR_FAILURE = -1, /* check struct */
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ST_SUCCESS,
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ST_ERR_PENDING = -5, /* to call reg_complete_cb */
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ST_ERR_ALREADY, /* already registered */
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ST_ERR_INPROGRESS,
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ST_ERR_NOPROTO, /* protocol not supported */
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};
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/* per protocol structure
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* for BT/FM and GPS
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*/
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struct st_proto_s {
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enum proto_type type;
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/*
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* to be called by ST when data arrives
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*/
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long (*recv) (struct sk_buff *);
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/*
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* for future use, logic now to be in ST
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*/
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unsigned char (*match_packet) (const unsigned char *data);
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/*
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* subsequent registration return PENDING,
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* signalled complete by this callback function
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*/
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void (*reg_complete_cb) (char data);
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/*
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* write function, sent in as NULL and to be returned to
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* protocol drivers
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*/
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long (*write) (struct sk_buff *skb);
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};
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extern long st_register(struct st_proto_s *new_proto);
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extern long st_unregister(enum proto_type type);
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#endif /* ST_H */
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