| /* SPDX-License-Identifier: GPL-2.0-or-later */ | |
| /* -------------------------------------------------------------------- */ | |
| /* i2c-pcf8584.h: PCF 8584 global defines */ | |
| /* -------------------------------------------------------------------- */ | |
| /* Copyright (C) 1996 Simon G. Vogl | |
| 1999 Hans Berglund | |
| */ | |
| /* -------------------------------------------------------------------- */ | |
| /* With some changes from Frodo Looijaard <frodol@dds.nl> */ | |
| #ifndef I2C_PCF8584_H | |
| #define I2C_PCF8584_H 1 | |
| /* ----- Control register bits ---------------------------------------- */ | |
| #define I2C_PCF_PIN 0x80 | |
| #define I2C_PCF_ESO 0x40 | |
| #define I2C_PCF_ES1 0x20 | |
| #define I2C_PCF_ES2 0x10 | |
| #define I2C_PCF_ENI 0x08 | |
| #define I2C_PCF_STA 0x04 | |
| #define I2C_PCF_STO 0x02 | |
| #define I2C_PCF_ACK 0x01 | |
| #define I2C_PCF_START (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK) | |
| #define I2C_PCF_STOP (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STO | I2C_PCF_ACK) | |
| #define I2C_PCF_REPSTART ( I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK) | |
| #define I2C_PCF_IDLE (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_ACK) | |
| /* ----- Status register bits ----------------------------------------- */ | |
| /*#define I2C_PCF_PIN 0x80 as above*/ | |
| #define I2C_PCF_INI 0x40 /* 1 if not initialized */ | |
| #define I2C_PCF_STS 0x20 | |
| #define I2C_PCF_BER 0x10 | |
| #define I2C_PCF_AD0 0x08 | |
| #define I2C_PCF_LRB 0x08 | |
| #define I2C_PCF_AAS 0x04 | |
| #define I2C_PCF_LAB 0x02 | |
| #define I2C_PCF_BB 0x01 | |
| /* ----- Chip clock frequencies --------------------------------------- */ | |
| #define I2C_PCF_CLK3 0x00 | |
| #define I2C_PCF_CLK443 0x10 | |
| #define I2C_PCF_CLK6 0x14 | |
| #define I2C_PCF_CLK 0x18 | |
| #define I2C_PCF_CLK12 0x1c | |
| /* ----- transmission frequencies ------------------------------------- */ | |
| #define I2C_PCF_TRNS90 0x00 /* 90 kHz */ | |
| #define I2C_PCF_TRNS45 0x01 /* 45 kHz */ | |
| #define I2C_PCF_TRNS11 0x02 /* 11 kHz */ | |
| #define I2C_PCF_TRNS15 0x03 /* 1.5 kHz */ | |
| /* ----- Access to internal registers according to ES1,ES2 ------------ */ | |
| /* they are mapped to the data port ( a0 = 0 ) */ | |
| /* available when ESO == 0 : */ | |
| #define I2C_PCF_OWNADR 0 | |
| #define I2C_PCF_INTREG I2C_PCF_ES2 | |
| #define I2C_PCF_CLKREG I2C_PCF_ES1 | |
| #endif /* I2C_PCF8584_H */ |