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HID: amd_sfh: Add a new interface for exporting HPD data

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AMDSFH has information about the User presence information via the Human
Presence Detection (HPD) sensor which is part of the AMD sensor fusion hub.

Add a new interface to export this information, where other drivers like
PMF can use this information to enhance user experiences.

Link: https://lore.kernel.org/all/ad064333-48a4-4cfa-9428-69e8a7c44667@redhat.com/
Co-developed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Basavaraj Natikar
2023-12-20 12:30:41 +05:30
committed by Jiri Kosina
parent 4e71d26289
commit b5b0774d53
5 changed files with 103 additions and 0 deletions
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46
include/linux/amd-pmf-io.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* AMD Platform Management Framework Interface
*
* Copyright (c) 2023, Advanced Micro Devices, Inc.
* All Rights Reserved.
*
* Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
* Basavaraj Natikar <Basavaraj.Natikar@amd.com>
*/
#ifndef AMD_PMF_IO_H
#define AMD_PMF_IO_H
#include <linux/types.h>
/**
* enum sfh_message_type - Query the SFH message type
* @MT_HPD: Message ID to know the Human presence info from MP2 FW
*/
enum sfh_message_type {
MT_HPD,
};
/**
* enum sfh_hpd_info - Query the Human presence information
* @SFH_NOT_DETECTED: Check the HPD connection information from MP2 FW
* @SFH_USER_PRESENT: Check if the user is present from HPD sensor
* @SFH_USER_AWAY: Check if the user is away from HPD sensor
*/
enum sfh_hpd_info {
SFH_NOT_DETECTED,
SFH_USER_PRESENT,
SFH_USER_AWAY,
};
/**
* struct amd_sfh_info - get HPD sensor info from MP2 FW
* @user_present: Populates the user presence information
*/
struct amd_sfh_info {
u8 user_present;
};
int amd_get_sfh_info(struct amd_sfh_info *sfh_info, enum sfh_message_type op);
#endif