39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ChromeOS EC device interface.
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*
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* Copyright (C) 2014 Google, Inc.
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*/
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#ifndef _UAPI_LINUX_CROS_EC_DEV_H_
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#define _UAPI_LINUX_CROS_EC_DEV_H_
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#include <linux/bits.h>
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/platform_data/cros_ec_commands.h>
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#define CROS_EC_DEV_VERSION "1.0.0"
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/**
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* struct cros_ec_readmem - Struct used to read mapped memory.
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* @offset: Within EC_LPC_ADDR_MEMMAP region.
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* @bytes: Number of bytes to read. Zero means "read a string" (including '\0')
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* At most only EC_MEMMAP_SIZE bytes can be read.
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* @buffer: Where to store the result. The ioctl returns the number of bytes
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* read or negative on error.
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*/
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struct cros_ec_readmem {
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uint32_t offset;
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uint32_t bytes;
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uint8_t buffer[EC_MEMMAP_SIZE];
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};
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#define CROS_EC_DEV_IOC 0xEC
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#define CROS_EC_DEV_IOCXCMD _IOWR(CROS_EC_DEV_IOC, 0, struct cros_ec_command)
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#define CROS_EC_DEV_IOCRDMEM _IOWR(CROS_EC_DEV_IOC, 1, struct cros_ec_readmem)
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#define CROS_EC_DEV_IOCEVENTMASK _IO(CROS_EC_DEV_IOC, 2)
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#endif /* _CROS_EC_DEV_H_ */
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