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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 */