84 lines
2.6 KiB
C
84 lines
2.6 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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/* 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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/**
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* enum kim_gpio_state - Few protocols such as FM have ACTIVE LOW
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* gpio states for their chip/core enable gpios
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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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* enum proto-type - The protocol on WiLink chips which share a
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* common physical interface like UART.
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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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/**
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* struct st_proto_s - Per Protocol structure from BT/FM/GPS to ST
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* @type: type of the protocol being registered among the
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* available proto_type(BT, FM, GPS the protocol which share TTY).
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* @recv: the receiver callback pointing to a function in the
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* protocol drivers called by the ST driver upon receiving
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* relevant data.
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* @match_packet: reserved for future use, to make ST more generic
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* @reg_complete_cb: callback handler pointing to a function in protocol
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* handler called by ST when the pending registrations are complete.
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* The registrations are marked pending, in situations when fw
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* download is in progress.
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* @write: pointer to function in ST provided to protocol drivers from ST,
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* to be made use when protocol drivers have data to send to TTY.
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* @priv_data: privdate data holder for the protocol drivers, sent
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* from the protocol drivers during registration, and sent back on
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* reg_complete_cb and recv.
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*/
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struct st_proto_s {
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enum proto_type type;
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long (*recv) (void *, struct sk_buff *);
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unsigned char (*match_packet) (const unsigned char *data);
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void (*reg_complete_cb) (void *, char data);
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long (*write) (struct sk_buff *skb);
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void *priv_data;
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};
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extern long st_register(struct st_proto_s *);
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extern long st_unregister(enum proto_type);
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#endif /* ST_H */
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