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38 lines
1.1 KiB
38 lines
1.1 KiB
/* 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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