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