regs-iic.h

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/* arch/arm/mach-s3c2410/include/mach/regs-iic.h
 *
 * Copyright (c) 2004 Simtec Electronics <[email protected]>
 *      http://www.simtec.co.uk/products/SWLINUX/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * S3C2410 I2C Controller
*/

#ifndef __ASM_ARCH_REGS_IIC_H
#define __ASM_ARCH_REGS_IIC_H __FILE__

/* see s3c2410x user guide, v1.1, section 9 (p447) for more info */

#define S3C2410_IICREG(x) (x)

#define S3C2410_IICCON    S3C2410_IICREG(0x00)
#define S3C2410_IICSTAT   S3C2410_IICREG(0x04)
#define S3C2410_IICADD    S3C2410_IICREG(0x08)
#define S3C2410_IICDS     S3C2410_IICREG(0x0C)
#define S3C2440_IICLC     S3C2410_IICREG(0x10)

#define S3C2410_IICCON_ACKEN        (1<<7)
#define S3C2410_IICCON_TXDIV_16     (0<<6)
#define S3C2410_IICCON_TXDIV_512    (1<<6)
#define S3C2410_IICCON_IRQEN        (1<<5)
#define S3C2410_IICCON_IRQPEND      (1<<4)
#define S3C2410_IICCON_SCALE(x)     ((x)&15)
#define S3C2410_IICCON_SCALEMASK    (0xf)

#define S3C2410_IICSTAT_MASTER_RX   (2<<6)
#define S3C2410_IICSTAT_MASTER_TX   (3<<6)
#define S3C2410_IICSTAT_SLAVE_RX    (0<<6)
#define S3C2410_IICSTAT_SLAVE_TX    (1<<6)
#define S3C2410_IICSTAT_MODEMASK    (3<<6)

#define S3C2410_IICSTAT_START       (1<<5)
#define S3C2410_IICSTAT_BUSBUSY     (1<<5)
#define S3C2410_IICSTAT_TXRXEN      (1<<4)
#define S3C2410_IICSTAT_ARBITR      (1<<3)
#define S3C2410_IICSTAT_ASSLAVE     (1<<2)
#define S3C2410_IICSTAT_ADDR0       (1<<1)
#define S3C2410_IICSTAT_LASTBIT     (1<<0)

#define S3C2410_IICLC_SDA_DELAY0    (0 << 0)
#define S3C2410_IICLC_SDA_DELAY5    (1 << 0)
#define S3C2410_IICLC_SDA_DELAY10   (2 << 0)
#define S3C2410_IICLC_SDA_DELAY15   (3 << 0)
#define S3C2410_IICLC_SDA_DELAY_MASK    (3 << 0)

#define S3C2410_IICLC_FILTER_ON     (1<<2)

#endif /* __ASM_ARCH_REGS_IIC_H */