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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* RTEMS support for MPC83xx
*
* This file contains the MPC83xx I2C driver declarations.
*/
/*
* Copyright (c) 2007 embedded brains GmbH & Co. KG
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* 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 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MPC83XX_I2CDRV_H
#define _MPC83XX_I2CDRV_H
#include <rtems/libi2c.h>
#include <rtems/irq.h>
#include <bsp.h>
#ifdef LIBBSP_POWERPC_GEN83XX_BSP_H
#include <mpc83xx/mpc83xx.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifdef LIBBSP_POWERPC_MPC55XXEVB_BSP_H
typedef struct {
volatile uint8_t i2cadr;
volatile uint8_t i2cfdr;
volatile uint8_t i2ccr;
volatile uint8_t i2csr;
volatile uint8_t i2cdr;
volatile uint8_t i2cdfsrr;
} m83xxI2CRegisters_t;
#endif
typedef struct mpc83xx_i2c_softc {
m83xxI2CRegisters_t *reg_ptr; /* ptr to HW registers */
int initialized; /* TRUE: module is initialized */
rtems_irq_number irq_number; /* IRQ number used for this module */
uint32_t base_frq; /* input frq for baud rate divider */
rtems_id irq_sema_id; /* SEMA used for IRQ signalling */
void (*probe)(struct mpc83xx_i2c_softc *self);
} mpc83xx_i2c_softc_t ;
typedef struct {
rtems_libi2c_bus_t bus_desc;
struct mpc83xx_i2c_softc softc;
} mpc83xx_i2c_desc_t;
extern rtems_libi2c_bus_ops_t mpc83xx_i2c_ops;
#ifdef __cplusplus
}
#endif
#endif /* _MPC83XX_I2CDRV_H */
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