54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2011 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __I2C_IMX233_H__
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#define __I2C_IMX233_H__
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#include "cpu.h"
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#include "system.h"
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#include "system-target.h"
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#include "i2c.h"
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#include "regs/regs-i2c.h"
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#define BM_I2C_CTRL1_ALL_IRQ \
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BM_OR8(I2C_CTRL1, SLAVE_IRQ, SLAVE_STOP_IRQ, MASTER_LOSS_IRQ, EARLY_TERM_IRQ, \
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OVERSIZE_XFER_TERM_IRQ, NO_SLAVE_ACK_IRQ, DATA_ENGINE_CMPLT_IRQ, BUS_FREE_IRQ)
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enum imx233_i2c_error_t
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{
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I2C_SUCCESS = 0,
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I2C_ERROR = -1,
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I2C_TIMEOUT = -2,
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I2C_MASTER_LOSS = -3,
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I2C_NO_SLAVE_ACK = -4,
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I2C_SLAVE_NAK = -5,
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I2C_BUFFER_FULL = -6,
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};
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void imx233_i2c_init(void);
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/* start building a transfer, will acquire an exclusive lock */
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void imx233_i2c_begin(void);
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/* add stage */
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enum imx233_i2c_error_t imx233_i2c_add(bool start, bool transmit, void *buffer, unsigned size, bool stop);
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/* end building a transfer and start the transfer */
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enum imx233_i2c_error_t imx233_i2c_end(unsigned timeout);
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#endif // __I2C_IMX233_H__
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