csu3_am335x/EVSE/GPL/open-plc-utils-0.3/pib/pibscalers.c

/*====================================================================*
 *
 *   Copyright (c) 2013 Qualcomm Atheros, Inc.
 *
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or
 *   without modification, are permitted (subject to the limitations
 *   in the disclaimer below) provided that the following conditions
 *   are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *
 *   * Neither the name of Qualcomm Atheros nor the names of
 *     its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written
 *     permission.
 *
 *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
 *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
 *   COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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 *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   uint16_t pibscalers (struct _file_ * pib);
 *
 *   return the number of scalers (carriers) based on the FWVERSION
 *   stored in a .pib file; this function is a fix so that older
 *   toolkit programs will work with newer chipsets;
 *
 *   chipsets with the following carriers are supported:
 *     - 1155 carriers
 *     - 1345 carriers
 *     - 2880 carriers
 *
 *--------------------------------------------------------------------*/

#ifndef PIBSCALERS_SOURCE
#define PIBSCALERS_SOURCE

#include <unistd.h>
#include <errno.h>

#include "../plc/plc.h"
#include "../pib/pib.h"
#include "../tools/error.h"

uint16_t pibscalers (struct _file_ * pib)

{
	// TODO: improve chipset detection

	struct pib_header pib_header;
	if (read (pib->file, &pib_header, sizeof (pib_header)) != sizeof (pib_header))
	{
		error (1, errno, "%s", pib->name);
	}
	if ((pib_header.FWVERSION  == 0x01) &&
		(pib_header.PIBVERSION == 0x00))
	{
		return (PLC_CARRIERS);
	}
	if (pib_header.FWVERSION < 0x05)
	{
		return (INT_CARRIERS);
	}
	return (AMP_CARRIERS);
}


#endif