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
13 #ifndef __ASM_ARCH_REGS_IIC_H
14 #define __ASM_ARCH_REGS_IIC_H __FILE__
15
16 /* see s3c2410x user guide, v1.1, section 9 (p447) for more info */
17
18 #define S3C2410_IICREG(x) (x)
19
20 #define S3C2410_IICCON S3C2410_IICREG(0x00)
21 #define S3C2410_IICSTAT S3C2410_IICREG(0x04)
22 #define S3C2410_IICADD S3C2410_IICREG(0x08)
23 #define S3C2410_IICDS S3C2410_IICREG(0x0C)
24 #define S3C2440_IICLC S3C2410_IICREG(0x10)
25
26 #define S3C2410_IICCON_ACKEN (1<<7)
27 #define S3C2410_IICCON_TXDIV_16 (0<<6)
28 #define S3C2410_IICCON_TXDIV_512 (1<<6)
29 #define S3C2410_IICCON_IRQEN (1<<5)
30 #define S3C2410_IICCON_IRQPEND (1<<4)
31 #define S3C2410_IICCON_SCALE(x) ((x)&15)
32 #define S3C2410_IICCON_SCALEMASK (0xf)
33
34 #define S3C2410_IICSTAT_MASTER_RX (2<<6)
35 #define S3C2410_IICSTAT_MASTER_TX (3<<6)
36 #define S3C2410_IICSTAT_SLAVE_RX (0<<6)
37 #define S3C2410_IICSTAT_SLAVE_TX (1<<6)
38 #define S3C2410_IICSTAT_MODEMASK (3<<6)
39
40 #define S3C2410_IICSTAT_START (1<<5)
41 #define S3C2410_IICSTAT_BUSBUSY (1<<5)
42 #define S3C2410_IICSTAT_TXRXEN (1<<4)
43 #define S3C2410_IICSTAT_ARBITR (1<<3)
44 #define S3C2410_IICSTAT_ASSLAVE (1<<2)
45 #define S3C2410_IICSTAT_ADDR0 (1<<1)
46 #define S3C2410_IICSTAT_LASTBIT (1<<0)
47
48 #define S3C2410_IICLC_SDA_DELAY0 (0 << 0)
49 #define S3C2410_IICLC_SDA_DELAY5 (1 << 0)
50 #define S3C2410_IICLC_SDA_DELAY10 (2 << 0)
51 #define S3C2410_IICLC_SDA_DELAY15 (3 << 0)
52 #define S3C2410_IICLC_SDA_DELAY_MASK (3 << 0)
53
54 #define S3C2410_IICLC_FILTER_ON (1<<2)
55
56 #endif /* __ASM_ARCH_REGS_IIC_H */
57
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