ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / drivers / i2c / algos / i2c-algo-pcf.h
blob5263a9eeb8d7e4df7cf5a2f801c7c0da57f5c043
1 /* -------------------------------------------------------------------- */
2 /* i2c-pcf8584.h: PCF 8584 global defines */
3 /* -------------------------------------------------------------------- */
4 /* Copyright (C) 1996 Simon G. Vogl
5 1999 Hans Berglund
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20 /* -------------------------------------------------------------------- */
22 /* With some changes from Frodo Looijaard <frodol@dds.nl> */
24 #ifndef I2C_PCF8584_H
25 #define I2C_PCF8584_H 1
27 /* ----- Control register bits ---------------------------------------- */
28 #define I2C_PCF_PIN 0x80
29 #define I2C_PCF_ESO 0x40
30 #define I2C_PCF_ES1 0x20
31 #define I2C_PCF_ES2 0x10
32 #define I2C_PCF_ENI 0x08
33 #define I2C_PCF_STA 0x04
34 #define I2C_PCF_STO 0x02
35 #define I2C_PCF_ACK 0x01
37 #define I2C_PCF_START (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
38 #define I2C_PCF_STOP (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STO | I2C_PCF_ACK)
39 #define I2C_PCF_REPSTART ( I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
40 #define I2C_PCF_IDLE (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_ACK)
42 /* ----- Status register bits ----------------------------------------- */
43 /*#define I2C_PCF_PIN 0x80 as above*/
45 #define I2C_PCF_INI 0x40 /* 1 if not initialized */
46 #define I2C_PCF_STS 0x20
47 #define I2C_PCF_BER 0x10
48 #define I2C_PCF_AD0 0x08
49 #define I2C_PCF_LRB 0x08
50 #define I2C_PCF_AAS 0x04
51 #define I2C_PCF_LAB 0x02
52 #define I2C_PCF_BB 0x01
54 /* ----- Chip clock frequencies --------------------------------------- */
55 #define I2C_PCF_CLK3 0x00
56 #define I2C_PCF_CLK443 0x10
57 #define I2C_PCF_CLK6 0x14
58 #define I2C_PCF_CLK 0x18
59 #define I2C_PCF_CLK12 0x1c
61 /* ----- transmission frequencies ------------------------------------- */
62 #define I2C_PCF_TRNS90 0x00 /* 90 kHz */
63 #define I2C_PCF_TRNS45 0x01 /* 45 kHz */
64 #define I2C_PCF_TRNS11 0x02 /* 11 kHz */
65 #define I2C_PCF_TRNS15 0x03 /* 1.5 kHz */
68 /* ----- Access to internal registers according to ES1,ES2 ------------ */
69 /* they are mapped to the data port ( a0 = 0 ) */
70 /* available when ESO == 0 : */
72 #define I2C_PCF_OWNADR 0
73 #define I2C_PCF_INTREG I2C_PCF_ES2
74 #define I2C_PCF_CLKREG I2C_PCF_ES1
76 #endif /* I2C_PCF8584_H */