mirror of
https://gitee.com/bianbu-linux/linux-6.6
synced 2025-04-26 14:17:26 -04:00
b92e301633
Register values in NTXEC are big-endian on the I2C bus, but the regmap subsystem handles the conversion between CPU-endian and big-endian data internally. ntxec_reg8 should thus return u16, not __be16. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20211218152553.744615-1-j.neuschaefer@gmx.net
38 lines
904 B
C
38 lines
904 B
C
/* 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 */
|
|
|
|
#endif
|