diff options
| author | Vijay Hiremath <vijay.p.hiremath@intel.com> | 2019-11-19 10:15:35 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-11-22 02:02:15 +0000 |
| commit | b6e36785982074af5638c456f305871f1465d460 (patch) | |
| tree | 1d8537c283419139d881b7321b28be5927c61b06 /driver/ioexpander/pca9555.h | |
| parent | 2748f2cbe6850d9ec7a307f53b3025924e25bf05 (diff) | |
| download | chrome-ec-b6e36785982074af5638c456f305871f1465d460.tar.gz | |
cleanup: Segregate ioexpander related drivers in ioexpander folder
BUG=none
BRANCH=none
TEST=make buildall -j
Change-Id: I7fe9ab23254dbd8515936d10ad6782305e76236c
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1925173
Reviewed-by: Jett Rink <jettrink@chromium.org>
Diffstat (limited to 'driver/ioexpander/pca9555.h')
| -rw-r--r-- | driver/ioexpander/pca9555.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/driver/ioexpander/pca9555.h b/driver/ioexpander/pca9555.h new file mode 100644 index 0000000000..273f898821 --- /dev/null +++ b/driver/ioexpander/pca9555.h @@ -0,0 +1,45 @@ +/* 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 BIT(0) +#define PCA9555_IO_1 BIT(1) +#define PCA9555_IO_2 BIT(2) +#define PCA9555_IO_3 BIT(3) +#define PCA9555_IO_4 BIT(4) +#define PCA9555_IO_5 BIT(5) +#define PCA9555_IO_6 BIT(6) +#define PCA9555_IO_7 BIT(7) + +static inline int pca9555_read(const int port, + const uint16_t i2c_addr_flags, + int reg, int *data_ptr) +{ + return i2c_read8(port, i2c_addr_flags, reg, data_ptr); +} + +static inline int pca9555_write(const int port, + const uint16_t i2c_addr_flags, + int reg, int data) +{ + return i2c_write8(port, i2c_addr_flags, reg, data); +} + +#endif /* __CROS_EC_IOEXPANDER_PCA9555_H */ |