i2c-algo-pcf.h (2204B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* -------------------------------------------------------------------- */ 3/* i2c-pcf8584.h: PCF 8584 global defines */ 4/* -------------------------------------------------------------------- */ 5/* Copyright (C) 1996 Simon G. Vogl 6 1999 Hans Berglund 7 8 */ 9/* -------------------------------------------------------------------- */ 10 11/* With some changes from Frodo Looijaard <frodol@dds.nl> */ 12 13#ifndef I2C_PCF8584_H 14#define I2C_PCF8584_H 1 15 16/* ----- Control register bits ---------------------------------------- */ 17#define I2C_PCF_PIN 0x80 18#define I2C_PCF_ESO 0x40 19#define I2C_PCF_ES1 0x20 20#define I2C_PCF_ES2 0x10 21#define I2C_PCF_ENI 0x08 22#define I2C_PCF_STA 0x04 23#define I2C_PCF_STO 0x02 24#define I2C_PCF_ACK 0x01 25 26#define I2C_PCF_START (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK) 27#define I2C_PCF_STOP (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STO | I2C_PCF_ACK) 28#define I2C_PCF_REPSTART ( I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK) 29#define I2C_PCF_IDLE (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_ACK) 30 31/* ----- Status register bits ----------------------------------------- */ 32/*#define I2C_PCF_PIN 0x80 as above*/ 33 34#define I2C_PCF_INI 0x40 /* 1 if not initialized */ 35#define I2C_PCF_STS 0x20 36#define I2C_PCF_BER 0x10 37#define I2C_PCF_AD0 0x08 38#define I2C_PCF_LRB 0x08 39#define I2C_PCF_AAS 0x04 40#define I2C_PCF_LAB 0x02 41#define I2C_PCF_BB 0x01 42 43/* ----- Chip clock frequencies --------------------------------------- */ 44#define I2C_PCF_CLK3 0x00 45#define I2C_PCF_CLK443 0x10 46#define I2C_PCF_CLK6 0x14 47#define I2C_PCF_CLK 0x18 48#define I2C_PCF_CLK12 0x1c 49 50/* ----- transmission frequencies ------------------------------------- */ 51#define I2C_PCF_TRNS90 0x00 /* 90 kHz */ 52#define I2C_PCF_TRNS45 0x01 /* 45 kHz */ 53#define I2C_PCF_TRNS11 0x02 /* 11 kHz */ 54#define I2C_PCF_TRNS15 0x03 /* 1.5 kHz */ 55 56 57/* ----- Access to internal registers according to ES1,ES2 ------------ */ 58/* they are mapped to the data port ( a0 = 0 ) */ 59/* available when ESO == 0 : */ 60 61#define I2C_PCF_OWNADR 0 62#define I2C_PCF_INTREG I2C_PCF_ES2 63#define I2C_PCF_CLKREG I2C_PCF_ES1 64 65#endif /* I2C_PCF8584_H */