#! /bin/sh
#
# Written by Oron Peled <oron@actcom.co.il>
# Copyright (C) 2006, Xorcom
#
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# See the file LICENSE in the top level of this tarball.
#

#
# $Id$
#
# Data format:
#	- A comment start with ';' or '#' until the end of line
#	- Blank lines are ignored
#	- Fields are whitespace separated (spaces or tabs)
#
# The fields are (in command line order):
#	1. DAA select in decimal (range 0-7).
#	   31 is a special value which means ALL DAAs (only some registers
#	   accept settings for ALL DAAs).
#	2. Command word:
#		- RD	Read Direct register.
#		- WD	Write Direct register.
#	3. Register number in hexadecimal.
#	4. Data byte in hexadecimal. (for WD command).
#

# ----------------------------------==== 8-channel FXO unit initialization ===-----------------------------------------

set -e

opermode='FCC'

me=`basename $0`
INIT_DIR=`dirname $0`
XPP_BASE=/proc/xpp
export XPP_BASE
LOGGER="logger -s -t $me"

# Always redirect stderr somewhere, otherwise the shell script will die
# when it tries to do I/O related stuff on closed file descriptor.
# Our default is to throw it down the bit-bucket.
exec 2> /dev/null
## If you wish to trace this script:
#exec 2> /tmp/xpp_init_$XPD_NAME
## Altenativly, if you have multiple XBUS'es:
#exec 2> /tmp/xpp_init_$XBUS_NAME_$XPD_NAME
#set -x

# redirect script output to the "slics" (registers command) file:
exec 1> "$XPP_BASE/$XPD_BUS/$XPD_NAME/slics"

$LOGGER -p kern.info "$XPD_BUS/$XPD_NAME: Initializing '$0'"

set_daa_country_params() {
	# based on fxo_modes from wctdm.c . TODO: more decent calculation?
	reg16=00; reg26=00; reg30=00; reg31=A3; ring_osc=; ring_x=;
	mode="$1"
	# TODO: a saner fall-back in case of an unknown mode
	if [ "$mode" = '' ]; then mode='FCC'; fi
	if [ -r $INIT_DIR/init_fxo_modes ]; then
	. $INIT_DIR/init_fxo_modes
	fi
	# Our register numbers are HEXADECIMAL!
	cat <<EOF
31 WD 10 $reg16
31 WD 1A $reg26
31 WD 1E $reg30
31 WD 1F $reg31
EOF
	# for the FXS:
	#if [ "$ring_osc" != '' ]; then
	#	/bin/echo "31 WI __ $ring_osc"
	#fi
	#if [ "$ring_x" != '' ]; then
	#	/bin/echo "31 WI __ $ring_x"
	#fi
}

# Remove empty lines and commets. Not strictly necessary
# but works around some limitations of the proc interface:
sed -e 's/[;#].*$//' -e '/^[ 	]*$/d' <<END_OF_FILE


31	WD	21	28
31	WD	18	99
31	WD	06	00

# ----------- DAA PCM start offset ----------

0	WD	22	00
0	WD	23	00
0	WD	24	00
0	WD	25	00

1	WD	22	08
1	WD	23	00
1	WD	24	08
1	WD	25	00

2	WD	22	10
2	WD	23	00
2	WD	24	10
2	WD	25	00

3	WD	22	18
3	WD	23	00
3	WD	24	18
3	WD	25	00

4	WD	22	20
4	WD	23	00
4	WD	24	20
4	WD	25	00

5	WD	22	28
5	WD	23	00
5	WD	24	28
5	WD	25	00

6	WD	22	30
6	WD	23	00
6	WD	24	30
6	WD	25	00

7	WD	22	38
7	WD	23	00
7	WD	24	38
7	WD	25	00

# ----------- DAA ONHOOK --------------------
31	WD	05	00

# Set tip to ring voltage to 3.5 volts while off-hook
# instead of default of 3.1
31	WD	1A	C0

END_OF_FILE

set_daa_country_params "$opermode"

$LOGGER -p kern.info "$XPD_BUS/$XPD_NAME: Ending '$0'"
exit 0