include/asm-arm/arch-s3c2410/regs-iic.h

   1 /* linux/include/asm-arm/arch-s3c2410/regs-iic.h
   2  *
   3  * Copyright (c) 2004 Simtec Electronics <linux@simtec.co.uk>
   4  *              http://www.simtec.co.uk/products/SWLINUX/
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * S3C2410 I2C Controller
  11  *
  12  *  Changelog:
  13  *      03-Oct-2004  BJD  Initial include for Linux
  14  *      08-Nov-2004  BJD  Added S3C2440 filter register
  15 */
  16
  17 #ifndef __ASM_ARCH_REGS_IIC_H
  18 #define __ASM_ARCH_REGS_IIC_H __FILE__
  19
  20 /* see s3c2410x user guide, v1.1, section 9 (p447) for more info */
  21
  22 #define S3C2410_IICREG(x) (x)
  23
  24 #define S3C2410_IICCON    S3C2410_IICREG(0x00)
  25 #define S3C2410_IICSTAT   S3C2410_IICREG(0x04)
  26 #define S3C2410_IICADD    S3C2410_IICREG(0x08)
  27 #define S3C2410_IICDS     S3C2410_IICREG(0x0C)
  28 #define S3C2440_IICLC     S3C2410_IICREG(0x10)
  29
  30 #define S3C2410_IICCON_ACKEN            (1<<7)
  31 #define S3C2410_IICCON_TXDIV_16         (0<<6)
  32 #define S3C2410_IICCON_TXDIV_512        (1<<6)
  33 #define S3C2410_IICCON_IRQEN            (1<<5)
  34 #define S3C2410_IICCON_IRQPEND          (1<<4)
  35 #define S3C2410_IICCON_SCALE(x)         ((x)&15)
  36 #define S3C2410_IICCON_SCALEMASK        (0xf)
  37
  38 #define S3C2410_IICSTAT_MASTER_RX       (2<<6)
  39 #define S3C2410_IICSTAT_MASTER_TX       (3<<6)
  40 #define S3C2410_IICSTAT_SLAVE_RX        (0<<6)
  41 #define S3C2410_IICSTAT_SLAVE_TX        (1<<6)
  42 #define S3C2410_IICSTAT_MODEMASK        (3<<6)
  43
  44 #define S3C2410_IICSTAT_START           (1<<5)
  45 #define S3C2410_IICSTAT_BUSBUSY         (1<<5)
  46 #define S3C2410_IICSTAT_TXRXEN          (1<<4)
  47 #define S3C2410_IICSTAT_ARBITR          (1<<3)
  48 #define S3C2410_IICSTAT_ASSLAVE         (1<<2)
  49 #define S3C2410_IICSTAT_ADDR0           (1<<1)
  50 #define S3C2410_IICSTAT_LASTBIT         (1<<0)
  51
  52 #define S3C2410_IICLC_SDA_DELAY0        (0 << 0)
  53 #define S3C2410_IICLC_SDA_DELAY5        (1 << 0)
  54 #define S3C2410_IICLC_SDA_DELAY10       (2 << 0)
  55 #define S3C2410_IICLC_SDA_DELAY15       (3 << 0)
  56 #define S3C2410_IICLC_SDA_DELAY_MASK    (3 << 0)
  57
  58 #define S3C2410_IICLC_FILTER_ON         (1<<2)
  59
  60 #endif /* __ASM_ARCH_REGS_IIC_H */