i2c.h

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/* SPDX-License-Identifier: GPL-2.0+-with-RTEMS-exception */
 
/*
 *  Copyright (c) 2014-2015 Andre Marques <andre.lousa.marques at gmail.com>
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */
 
#ifndef LIBBSP_ARM_RASPBERRYPI_I2C_H
#define LIBBSP_ARM_RASPBERRYPI_I2C_H
 
#include <dev/i2c/i2c.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#define BSC_CORE_CLK_HZ 150000000
 
#define DEFAULT_BUS_CLOCK 100000
 
extern void rpi_i2c_init(void);
 
extern int rpi_i2c_register_bus(
  const char *bus_path,
  uint32_t bus_clock
);
 
static inline int rpi_setup_i2c_bus(void)
{
  rpi_i2c_init();
 
  return rpi_i2c_register_bus("/dev/i2c", DEFAULT_BUS_CLOCK);
}
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif /* LIBBSP_ARM_RASPBERRYPI_I2C_H */