altos: Move FEC code to core

It's not a driver as it's not specific to the 1120 chip

Signed-off-by: Keith Packard <keithp@keithp.com>

2 files changed, 0 insertions, 199 deletions

diff --git a/src/drivers/ao_fec.h b/src/drivers/ao_fec.h
deleted file mode 100644
index db5523a3..00000000
--- a/src/drivers/ao_fec.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright © 2012 Keith Packard <keithp@keithp.com>
- *
- * 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; version 2 of the License.
- *
- * 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 _AO_FEC_H_
-#define _AO_FEC_H_
-
-#include <stdint.h>
-
-#define AO_FEC_CRC_INIT			0xffff
-#define AO_FEC_TRELLIS_TERMINATOR	0x0b
-#define AO_FEC_PREPARE_EXTRA		4
-
-void
-ao_fec_dump_bytes(uint8_t *bytes, uint8_t len, char *name);
-
-uint16_t
-ao_fec_crc(uint8_t *bytes, uint8_t len);
-
-/*
- * Append CRC and terminator bytes, returns resulting length.
- * 'out' must be at least len + AO_FEC_PREPARE_EXTRA bytes long
- */
-uint8_t
-ao_fec_prepare(uint8_t *in, uint8_t len, uint8_t *out);
-
-/*
- * Whiten data using the cc1111 PN9 sequence. 'out'
- * must be 'len' bytes long. 'out' and 'in' can be
- * the same array
- */
-uint8_t
-ao_fec_whiten(uint8_t *in, uint8_t len, uint8_t *out);
-
-/*
- * Encode data. 'out' must be len*2 bytes long
- */
-uint8_t
-ao_fec_encode(uint8_t *in, uint8_t len, uint8_t *out);
-
-/*
- * Interleave data. 'out' must be 'len' bytes long
- */
-uint8_t
-ao_fec_interleave(uint8_t *in, uint8_t len, uint8_t *out);
-
-#endif /* _AO_FEC_H_ */
diff --git a/src/drivers/ao_fec_tx.c b/src/drivers/ao_fec_tx.c
deleted file mode 100644
index b8933956..00000000
--- a/src/drivers/ao_fec_tx.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright © 2012 Keith Packard <keithp@keithp.com>
- *
- * 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; version 2 of the License.
- *
- * 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.
- */
-
-#include <ao_fec.h>
-#include <stdio.h>
-
-void
-ao_fec_dump_bytes(uint8_t *bytes, uint8_t len, char *name)
-{
-	uint8_t	i;
-
-	printf ("%s (%d):", name, len);
-	for (i = 0; i < len; i++) {
-		if ((i & 7) == 0)
-			printf ("\n\t%02x:", i);
-		printf(" %02x", bytes[i]);
-	}
-	printf ("\n");
-}
-
-static uint16_t inline
-crc_byte(uint8_t byte, uint16_t crc)
-{
-	uint8_t	bit;
-
-	for (bit = 0; bit < 8; bit++) {
-		if (((crc & 0x8000) >> 8) ^ (byte & 0x80))
-			crc = (crc << 1) ^ 0x8005;
-		else
-			crc = (crc << 1);
-		byte <<= 1;
-	}
-	return crc;
-}
-
-uint16_t
-ao_fec_crc(uint8_t *bytes, uint8_t len)
-{
-	uint16_t	crc = AO_FEC_CRC_INIT;
-
-	while (len--)
-		crc = crc_byte(*bytes++, crc);
-	return crc;
-}
-
-uint8_t
-ao_fec_prepare(uint8_t *in, uint8_t len, uint8_t *out)
-{
-	uint16_t	crc = ao_fec_crc (in, len);
-	uint8_t		i;
-	uint8_t		num_fec;
-
-	/* Copy data */
-	for (i = 0; i < len; i++)
-		out[i] = in[i];
-
-	/* Append CRC */
-	out[i++] = crc >> 8;
-	out[i++] = crc;
-
-	/* Append FEC -- 1 byte if odd, two bytes if even */
-	num_fec = 2 - (i & 1);
-	while (num_fec--)
-		out[i++] = AO_FEC_TRELLIS_TERMINATOR;
-	return i;
-}
-
-static const uint8_t whiten[] = {
-#include "ao_whiten.h"
-};
-
-uint8_t
-ao_fec_whiten(uint8_t *in, uint8_t len, uint8_t *out)
-{
-	const uint8_t	*w = whiten;
-
-	while (len--)
-		*out++ = *in++ ^ *w++;
-}
-
-static const uint8_t ao_fec_encode_table[16] = {
-	0, 3, 1, 2,
-	3, 0, 2, 1,
-	3, 0, 2, 1,
-	0, 3, 1, 2
-};
-
-uint8_t
-ao_fec_encode(uint8_t *in, uint8_t len, uint8_t *out)
-{
-	uint16_t	fec = 0, output;
-	uint8_t		byte, bit;
-
-	for (byte = 0; byte < len; byte++) {
-		fec = (fec & 0x700) | in[byte];
-		output = 0;
-		for (bit = 0; bit < 8; bit++) {
-			output = output << 2 | ao_fec_encode_table[fec >> 7];
-			fec = (fec << 1) & 0x7ff;
-		}
-		out[byte * 2] = output >> 8;
-		out[byte * 2 + 1] = output;
-	}
-	return len * 2;
-}
-
-uint8_t
-ao_fec_interleave(uint8_t *in, uint8_t len, uint8_t *out)
-{
-	uint8_t	i, j;
-
-	for (i = 0; i < len; i += 4) {
-		uint32_t	interleaved = 0;
-
-		for (j = 0; j < 4 * 4; j++) {
-			interleaved <<= 2;
-			interleaved |= (in[i + (~j & 0x3)] >> (2 * ((j & 0xc) >> 2))) & 0x03;
-		}
-		out[i+0] = interleaved >> 24;
-		out[i+1] = interleaved >> 16;
-		out[i+2] = interleaved >> 8;
-		out[i+3] = interleaved;
-	}
-	return len;
-}