| /* |
| * Google LWIS I2C Interface |
| * |
| * Copyright (c) 2018 Google, LLC |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef LWIS_I2C_H_ |
| #define LWIS_I2C_H_ |
| |
| #include <linux/i2c.h> |
| #include <linux/pinctrl/consumer.h> |
| |
| #include "lwis_commands.h" |
| #include "lwis_device_i2c.h" |
| |
| #define I2C_STATE_OFF_STRING "off_i2c" |
| #define I2C_STATE_ON_STRING "on_i2c" |
| |
| /* |
| * lwis_i2c_set_state: Enable or disable the i2c device. |
| * NOTE: state_str must match the pinctrl-names defined in the i2c driver. |
| * Pinctrl states can be found in the device tree, look for the i2c entry and |
| * the state names are defined under "pinctrl-names". Their corresponding |
| * functions are defined under "pinctrl-N". |
| */ |
| int lwis_i2c_set_state(struct lwis_i2c_device *i2c, const char *state_str); |
| |
| /* |
| * lwis_i2c_io_entry_rw: Read/Write from i2c bus via io_entry request. |
| * The readback values will be stored in the entry. |
| */ |
| int lwis_i2c_io_entry_rw(struct lwis_i2c_device *i2c, struct lwis_io_entry *entry); |
| |
| #endif /* LWIS_I2C_H_ */ |
