Staging: sources for ST header file

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: NPavan Savoy <pavan_savoy@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/ti-st/fm.h

+struct fm_event_hdr {
+	unsigned char plen;
+} __attribute__ ((packed));
+
+#define FM_MAX_FRAME_SIZE 0xFF	/* TODO: */
+#define FM_EVENT_HDR_SIZE 1	/* size of fm_event_hdr */
+#define ST_FM_CH8_PKT 0x8
+
+/* gps stuff */
+struct gps_event_hdr {
+unsigned char opcode;
+unsigned short plen;
+} __attribute__ ((packed));

drivers/staging/ti-st/st.h

+/*
+ *  Shared Transport Header file
+ *	To be included by the protocol stack drivers for
+ *	Texas Instruments BT,FM and GPS combo chip drivers
+ *
+ *  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_H
+#define ST_H
+
+#include <linux/skbuff.h>
+/*
+ * st.h
+ */
+
+/* TODO:
+ * Move the following to tty.h upon acceptance
+ */
+#define N_TI_WL	20	/* Ldisc for TI's WL BT, FM, GPS combo chips */
+
+/* some gpios have active high, others like fm have
+ * active low
+ */
+enum kim_gpio_state {
+	KIM_GPIO_INACTIVE,
+	KIM_GPIO_ACTIVE,
+};
+/*
+ * the list of protocols on chip
+ */
+enum proto_type {
+	ST_BT,
+	ST_FM,
+	ST_GPS,
+	ST_MAX,
+};
+
+enum {
+	ST_ERR_FAILURE = -1,	/* check struct */
+	ST_SUCCESS,
+	ST_ERR_PENDING = -5,	/* to call reg_complete_cb */
+	ST_ERR_ALREADY,		/* already registered */
+	ST_ERR_INPROGRESS,
+	ST_ERR_NOPROTO,		/* protocol not supported */
+};
+
+/* per protocol structure
+ * for BT/FM and GPS
+ */
+struct st_proto_s {
+	enum proto_type type;
+/*
+ * to be called by ST when data arrives
+ */
+	long (*recv) (struct sk_buff *);
+/*
+ * for future use, logic now to be in ST
+ */
+	unsigned char (*match_packet) (const unsigned char *data);
+/*
+ * subsequent registration return PENDING,
+ * signalled complete by this callback function
+ */
+	void (*reg_complete_cb) (char data);
+/*
+ * write function, sent in as NULL and to be returned to
+ * protocol drivers
+ */
+	long (*write) (struct sk_buff *skb);
+};
+
+extern long st_register(struct st_proto_s *new_proto);
+extern long st_unregister(enum proto_type type);
+
+#endif /* ST_H */