1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * AMD Platform Management Framework Interface
4 *
5 * Copyright (c) 2023, Advanced Micro Devices, Inc.
6 * All Rights Reserved.
7 *
8 * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
9 * Basavaraj Natikar <Basavaraj.Natikar@amd.com>
10 */
11
12 #ifndef AMD_PMF_IO_H
13 #define AMD_PMF_IO_H
14
15 #include <linux/types.h>
16
17 /**
18 * enum sfh_message_type - Query the SFH message type
19 * @MT_HPD: Message ID to know the Human presence info from MP2 FW
20 * @MT_ALS: Message ID to know the Ambient light info from MP2 FW
21 */
22 enum sfh_message_type {
23 MT_HPD,
24 MT_ALS,
25 };
26
27 /**
28 * enum sfh_hpd_info - Query the Human presence information
29 * @SFH_NOT_DETECTED: Check the HPD connection information from MP2 FW
30 * @SFH_USER_PRESENT: Check if the user is present from HPD sensor
31 * @SFH_USER_AWAY: Check if the user is away from HPD sensor
32 */
33 enum sfh_hpd_info {
34 SFH_NOT_DETECTED,
35 SFH_USER_PRESENT,
36 SFH_USER_AWAY,
37 };
38
39 /**
40 * struct amd_sfh_info - get HPD sensor info from MP2 FW
41 * @ambient_light: Populates the ambient light information
42 * @user_present: Populates the user presence information
43 */
44 struct amd_sfh_info {
45 u32 ambient_light;
46 u8 user_present;
47 };
48
49 int amd_get_sfh_info(struct amd_sfh_info *sfh_info, enum sfh_message_type op);
50 #endif
51
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