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