include/linux/amd-pmf-io.h

   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