From b5b0774d53bb81bddbf8c609b3f183d4af6e91da Mon Sep 17 00:00:00 2001 From: Basavaraj Natikar Date: Wed, 20 Dec 2023 12:30:41 +0530 Subject: HID: amd_sfh: Add a new interface for exporting HPD data 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 Signed-off-by: Shyam Sundar S K Signed-off-by: Basavaraj Natikar Signed-off-by: Jiri Kosina --- include/linux/amd-pmf-io.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 include/linux/amd-pmf-io.h (limited to 'include/linux') diff --git a/include/linux/amd-pmf-io.h b/include/linux/amd-pmf-io.h new file mode 100644 index 000000000000..5b6d29d36922 --- /dev/null +++ b/include/linux/amd-pmf-io.h @@ -0,0 +1,46 @@ +/* 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 + * Basavaraj Natikar + */ + +#ifndef AMD_PMF_IO_H +#define AMD_PMF_IO_H + +#include + +/** + * 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 -- cgit v1.2.3