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/* Copyright 2019 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.
*
* IT8801 is an I/O expander with the keyboard matrix controller.
*
*/
#ifndef __CROS_EC_IO_EXPANDER_IT8801_H
#define __CROS_EC_IO_EXPANDER_IT8801_H
/* I2C slave address(7-bit without R/W) */
#define IT8801_I2C_ADDR 0x38
/* Keyboard Matrix Scan control (KBS) */
#define IT8801_REG_KSOMCR 0x40
#define IT8801_REG_MASK_KSOSDIC BIT(7)
#define IT8801_REG_MASK_KSE BIT(6)
#define IT8801_REG_MASK_AKSOSC BIT(5)
#define IT8801_REG_KSIDR 0x41
#define IT8801_REG_KSIEER 0x42
#define IT8801_REG_KSIIER 0x43
#define IT8801_REG_SMBCR 0xfa
#define IT8801_REG_MASK_ARE BIT(4)
#define IT8801_REG_GIECR 0xfb
#define IT8801_REG_MASK_GKSIIE BIT(3)
#define IT8801_REG_GPIO10 0x12
#define IT8801_REG_GPIO00_KSO19 0x0a
#define IT8801_REG_GPIO01_KSO18 0x0b
#define IT8801_REG_GPIO22_KSO21 0x1c
#define IT8801_REG_GPIO23_KSO20 0x1d
#define IT8801_REG_MASK_GPIOAFS_PULLUP BIT(7)
#define IT8801_REG_MASK_GPIOAFS_FUNC2 BIT(6)
#define IT8801_REG_MASK_GPIODIR BIT(5)
#define IT8801_REG_MASK_GPIOPUE BIT(0)
#define IT8801_REG_GPIOG2SOVR 0x07
#define IT8801_REG_GPIO23SOV BIT(3)
#define IT8801_REG_MASK_SELKSO2 0x02
#define IT8801_REG_LBVIDR 0xFE
#define IT8801_REG_HBVIDR 0xFF
#define IT8801_KSO_COUNT 18
/* ISR for IT8801's SMB_INT# */
void io_expander_it8801_interrupt(enum gpio_signal signal);
#endif /* __CROS_EC_KBEXPANDER_IT8801_H */
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