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/*
* (C) Copyright 2011
* Marvell Inc, <www.marvell.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef _MV_I2C_H_
#define _MV_I2C_H_
extern void i2c_clk_enable(void);
/* Shall the current transfer have a start/stop condition? */
#define I2C_COND_NORMAL 0
#define I2C_COND_START 1
#define I2C_COND_STOP 2
/* Shall the current transfer be ack/nacked or being waited for it? */
#define I2C_ACKNAK_WAITACK 1
#define I2C_ACKNAK_SENDACK 2
#define I2C_ACKNAK_SENDNAK 4
/* Specify who shall transfer the data (master or slave) */
#define I2C_READ 0
#define I2C_WRITE 1
#if (CONFIG_SYS_I2C_SPEED == 400000)
#define I2C_ICR_INIT (ICR_FM | ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD \
| ICR_SCLE)
#else
#define I2C_ICR_INIT (ICR_BEIE | ICR_IRFIE | ICR_ITEIE | ICR_GCD | ICR_SCLE)
#endif
#define I2C_ISR_INIT 0x7FF
/* ----- Control register bits ---------------------------------------- */
#define ICR_START 0x1 /* start bit */
#define ICR_STOP 0x2 /* stop bit */
#define ICR_ACKNAK 0x4 /* send ACK(0) or NAK(1) */
#define ICR_TB 0x8 /* transfer byte bit */
#define ICR_MA 0x10 /* master abort */
#define ICR_SCLE 0x20 /* master clock enable, mona SCLEA */
#define ICR_IUE 0x40 /* unit enable */
#define ICR_GCD 0x80 /* general call disable */
#define ICR_ITEIE 0x100 /* enable tx interrupts */
#define ICR_IRFIE 0x200 /* enable rx interrupts, mona: DRFIE */
#define ICR_BEIE 0x400 /* enable bus error ints */
#define ICR_SSDIE 0x800 /* slave STOP detected int enable */
#define ICR_ALDIE 0x1000 /* enable arbitration interrupt */
#define ICR_SADIE 0x2000 /* slave address detected int enable */
#define ICR_UR 0x4000 /* unit reset */
#define ICR_FM 0x8000 /* Fast Mode */
/* ----- Status register bits ----------------------------------------- */
#define ISR_RWM 0x1 /* read/write mode */
#define ISR_ACKNAK 0x2 /* ack/nak status */
#define ISR_UB 0x4 /* unit busy */
#define ISR_IBB 0x8 /* bus busy */
#define ISR_SSD 0x10 /* slave stop detected */
#define ISR_ALD 0x20 /* arbitration loss detected */
#define ISR_ITE 0x40 /* tx buffer empty */
#define ISR_IRF 0x80 /* rx buffer full */
#define ISR_GCAD 0x100 /* general call address detected */
#define ISR_SAD 0x200 /* slave address detected */
#define ISR_BED 0x400 /* bus error no ACK/NAK */
#endif
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