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driver: Add driver header for PCA9555 I/O port controller

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BUG=b:64394037
BRANCH=glkrvp
TEST=Manually tested on GLKRVP, i2cxfer works

Change-Id: If65e5039987ecbb7fa2a3a5eeeef5af6d73ab66a
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/603987
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
This commit is contained in:
Vijay Hiremath
2017-06-05 16:23:38 -07:00
committed by chrome-bot
parent 3bd19634bb
commit a1649d151f
1 changed files with 41 additions and 0 deletions
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41
driver/ioexpander_pca9555.h Normal file
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/* Copyright 2017 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* NXP PCA9555 I/O Port expander driver header
*/
#ifndef __CROS_EC_IOEXPANDER_PCA9555_H
#define __CROS_EC_IOEXPANDER_PCA9555_H
#include "i2c.h"
#define PCA9555_CMD_INPUT_PORT_0 0
#define PCA9555_CMD_INPUT_PORT_1 1
#define PCA9555_CMD_OUTPUT_PORT_0 2
#define PCA9555_CMD_OUTPUT_PORT_1 3
#define PCA9555_CMD_POLARITY_INVERSION_PORT_0 4
#define PCA9555_CMD_POLARITY_INVERSION_PORT_1 5
#define PCA9555_CMD_CONFIGURATION_PORT_0 6
#define PCA9555_CMD_CONFIGURATION_PORT_1 7
#define PCA9555_IO_0 (1 << 0)
#define PCA9555_IO_1 (1 << 1)
#define PCA9555_IO_2 (1 << 2)
#define PCA9555_IO_3 (1 << 3)
#define PCA9555_IO_4 (1 << 4)
#define PCA9555_IO_5 (1 << 5)
#define PCA9555_IO_6 (1 << 6)
#define PCA9555_IO_7 (1 << 7)
static inline int pca9555_read(int port, int addr, int reg, int *data_ptr)
{
return i2c_read8(port, addr, reg, data_ptr);
}
static inline int pca9555_write(int port, int addr, int reg, int data)
{
return i2c_write8(port, addr, reg, data);
}
#endif /* __CROS_EC_IOEXPANDER_PCA9555_H */