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#ifndef __CB_BDK_TWSI_H__
#define __CB_BDK_TWSI_H__
/***********************license start***********************************
* Copyright (c) 2003-2017 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted 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 Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* This Software, including technical data, may be subject to U.S. export
* control laws, including the U.S. Export Administration Act and its
* associated regulations, and may be subject to export or import
* regulations in other countries.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT
* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT,
* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK
* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Interface to the TWSI / I2C bus
*
* Note: Currently on 7 bit device addresses are supported
*
* <hr>$Revision: 49448 $<hr>
*
* @addtogroup hal
* @{
*/
#include <libbdk-arch/bdk-numa.h>
/**
* Do a twsi read from a 7 bit device address using an (optional)
* internal address. Up to 4 bytes can be read at a time.
*
* @param node Node to use in a Numa setup. Can be an exact ID or a special
* value.
* @param twsi_id which TWSI bus to use
* @param dev_addr Device address (7 bit)
* @param internal_addr
* Internal address. Can be 0, 1 or 2 bytes in width
* @param num_bytes Number of data bytes to read (1-4)
* @param ia_width_bytes
* Internal address size in bytes (0, 1, or 2)
*
* @return Read data, or -1 on failure
*/
extern int64_t bdk_twsix_read_ia(bdk_node_t node, int twsi_id, uint8_t dev_addr, uint16_t internal_addr, int num_bytes, int ia_width_bytes);
/**
* Write 1-8 bytes to a TWSI device using an internal address.
*
* @param node Node to use in a Numa setup. Can be an exact ID or a special
* value.
* @param twsi_id which TWSI interface to use
* @param dev_addr TWSI device address (7 bit only)
* @param internal_addr
* TWSI internal address (0, 8, or 16 bits)
* @param num_bytes Number of bytes to write (1-8)
* @param ia_width_bytes
* internal address width, in bytes (0, 1, 2)
* @param data Data to write. Data is written MSB first on the twsi bus, and
* only the lower num_bytes bytes of the argument are valid. (If
* a 2 byte write is done, only the low 2 bytes of the argument is
* used.
*
* @return Zero on success, -1 on error
*/
extern int bdk_twsix_write_ia(bdk_node_t node, int twsi_id, uint8_t dev_addr, uint16_t internal_addr, int num_bytes, int ia_width_bytes, uint64_t data);
/** @} */
#endif /* !__CB_BDK_TWSI_H__ */
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