1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * ChromeOS EC device interface. |
4 | * |
5 | * Copyright (C) 2014 Google, Inc. |
6 | */ |
7 | |
8 | #ifndef _UAPI_LINUX_CROS_EC_DEV_H_ |
9 | #define _UAPI_LINUX_CROS_EC_DEV_H_ |
10 | |
11 | #include <linux/bits.h> |
12 | #include <linux/ioctl.h> |
13 | #include <linux/types.h> |
14 | |
15 | #include <linux/platform_data/cros_ec_commands.h> |
16 | |
17 | #define CROS_EC_DEV_VERSION "1.0.0" |
18 | |
19 | /** |
20 | * struct cros_ec_readmem - Struct used to read mapped memory. |
21 | * @offset: Within EC_LPC_ADDR_MEMMAP region. |
22 | * @bytes: Number of bytes to read. Zero means "read a string" (including '\0') |
23 | * At most only EC_MEMMAP_SIZE bytes can be read. |
24 | * @buffer: Where to store the result. The ioctl returns the number of bytes |
25 | * read or negative on error. |
26 | */ |
27 | struct cros_ec_readmem { |
28 | uint32_t offset; |
29 | uint32_t bytes; |
30 | uint8_t buffer[EC_MEMMAP_SIZE]; |
31 | }; |
32 | |
33 | #define CROS_EC_DEV_IOC 0xEC |
34 | #define CROS_EC_DEV_IOCXCMD _IOWR(CROS_EC_DEV_IOC, 0, struct cros_ec_command) |
35 | #define CROS_EC_DEV_IOCRDMEM _IOWR(CROS_EC_DEV_IOC, 1, struct cros_ec_readmem) |
36 | #define CROS_EC_DEV_IOCEVENTMASK _IO(CROS_EC_DEV_IOC, 2) |
37 | |
38 | #endif /* _CROS_EC_DEV_H_ */ |
39 | |