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