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Diffstat (limited to 'chip/npcx/i2c_chip.h')
| -rw-r--r-- | chip/npcx/i2c_chip.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/chip/npcx/i2c_chip.h b/chip/npcx/i2c_chip.h new file mode 100644 index 0000000000..014e6cddf2 --- /dev/null +++ b/chip/npcx/i2c_chip.h @@ -0,0 +1,28 @@ +/* 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. + */ + +/* NPCX-specific I2C module for Chrome EC */ + +#ifndef __CROS_EC_I2C_CHIP_H +#define __CROS_EC_I2C_CHIP_H + +/** + * Select specific i2c port connected to i2c controller. + * + * @parm port I2C port + */ +void i2c_select_port(int port); + +/* + * Due to we couldn't support GPIO reading when IO is selected I2C, we need + * to distingulish which mode we used currently. + * + * @parm port I2C port + * + * @return 0: i2c ports are selected to pins. 1: GPIOs are selected to pins. + */ +int i2c_is_raw_mode(int port); + +#endif /* __CROS_EC_I2C_CHIP_H */ |