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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2020 Jonathan Neuschäfer
*
* Register access and version information for the Netronix embedded
* controller.
*/
#ifndef NTXEC_H
#define NTXEC_H
#include <linux/types.h>
struct device;
struct regmap;
struct ntxec {
struct device *dev;
struct regmap *regmap;
};
/*
* Some registers, such as the battery status register (0x41), are in
* big-endian, but others only have eight significant bits, which are in the
* first byte transmitted over I2C (the MSB of the big-endian value).
* This convenience function converts an 8-bit value to 16-bit for use in the
* second kind of register.
*/
static inline u16 ntxec_reg8(u8 value)
{
return value << 8;
}
/* Known firmware versions */
#define NTXEC_VERSION_KOBO_AURA 0xd726 /* found in Kobo Aura */
#define NTXEC_VERSION_TOLINO_SHINE2 0xf110 /* found in Tolino Shine 2 HD */
#define NTXEC_VERSION_TOLINO_VISION 0xe135 /* found in Tolino Vision, contains RTC, ADC, PWM, home pad */
#endif