46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/* Copyright 2017 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* NXP PCA9555 I/O Port expander driver header
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*/
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#ifndef __CROS_EC_IOEXPANDER_PCA9555_H
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#define __CROS_EC_IOEXPANDER_PCA9555_H
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#include "i2c.h"
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#define PCA9555_CMD_INPUT_PORT_0 0
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#define PCA9555_CMD_INPUT_PORT_1 1
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#define PCA9555_CMD_OUTPUT_PORT_0 2
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#define PCA9555_CMD_OUTPUT_PORT_1 3
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#define PCA9555_CMD_POLARITY_INVERSION_PORT_0 4
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#define PCA9555_CMD_POLARITY_INVERSION_PORT_1 5
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#define PCA9555_CMD_CONFIGURATION_PORT_0 6
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#define PCA9555_CMD_CONFIGURATION_PORT_1 7
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#define PCA9555_IO_0 BIT(0)
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#define PCA9555_IO_1 BIT(1)
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#define PCA9555_IO_2 BIT(2)
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#define PCA9555_IO_3 BIT(3)
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#define PCA9555_IO_4 BIT(4)
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#define PCA9555_IO_5 BIT(5)
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#define PCA9555_IO_6 BIT(6)
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#define PCA9555_IO_7 BIT(7)
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static inline int pca9555_read(const int port,
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const uint16_t i2c_addr_flags,
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int reg, int *data_ptr)
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{
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return i2c_read8(port, i2c_addr_flags, reg, data_ptr);
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}
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static inline int pca9555_write(const int port,
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const uint16_t i2c_addr_flags,
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int reg, int data)
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{
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return i2c_write8(port, i2c_addr_flags, reg, data);
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}
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#endif /* __CROS_EC_IOEXPANDER_PCA9555_H */
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