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Diffstat (limited to 'drivers/hid/amd-sfh-hid/amd_sfh_pcie.h')
-rw-r--r--drivers/hid/amd-sfh-hid/amd_sfh_pcie.h106
1 files changed, 106 insertions, 0 deletions
diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.h b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.h
new file mode 100644
index 000000000..dfb7cabd8
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.h
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * AMD MP2 PCIe communication driver
+ * Copyright 2020-2021 Advanced Micro Devices, Inc.
+ * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
+ * Sandeep Singh <Sandeep.singh@amd.com>
+ * Basavaraj Natikar <Basavaraj.Natikar@amd.com>
+ */
+
+#ifndef PCIE_MP2_AMD_H
+#define PCIE_MP2_AMD_H
+
+#include "amd_sfh_common.h"
+
+/* MP2 C2P Message Registers */
+#define AMD_C2P_MSG0 0x10500
+#define AMD_C2P_MSG1 0x10504
+#define AMD_C2P_MSG2 0x10508
+
+/* MP2 P2C Message Registers */
+#define AMD_P2C_MSG3 0x1068C /* Supported Sensors info */
+
+#define V2_STATUS 0x2
+
+#define HPD_IDX 16
+
+#define SENSOR_DISCOVERY_STATUS_MASK GENMASK(5, 3)
+#define SENSOR_DISCOVERY_STATUS_SHIFT 3
+
+/* SFH Command register */
+union sfh_cmd_base {
+ u32 ul;
+ struct {
+ u32 cmd_id : 8;
+ u32 sensor_id : 8;
+ u32 period : 16;
+ } s;
+ struct {
+ u32 cmd_id : 4;
+ u32 intr_disable : 1;
+ u32 rsvd1 : 3;
+ u32 length : 7;
+ u32 mem_type : 1;
+ u32 sensor_id : 8;
+ u32 period : 8;
+ } cmd_v2;
+};
+
+union cmd_response {
+ u32 resp;
+ struct {
+ u32 status : 2;
+ u32 out_in_c2p : 1;
+ u32 rsvd1 : 1;
+ u32 response : 4;
+ u32 sub_cmd : 8;
+ u32 sensor_id : 6;
+ u32 rsvd2 : 10;
+ } response_v2;
+};
+
+union sfh_cmd_param {
+ u32 ul;
+ struct {
+ u32 buf_layout : 2;
+ u32 buf_length : 6;
+ u32 rsvd : 24;
+ } s;
+};
+
+struct sfh_cmd_reg {
+ union sfh_cmd_base cmd_base;
+ union sfh_cmd_param cmd_param;
+ phys_addr_t phys_addr;
+};
+
+enum sensor_idx {
+ accel_idx = 0,
+ gyro_idx = 1,
+ mag_idx = 2,
+ als_idx = 19
+};
+
+enum mem_use_type {
+ USE_DRAM,
+ USE_C2P_REG,
+};
+
+struct hpd_status {
+ union {
+ struct {
+ u32 human_presence_report : 4;
+ u32 human_presence_actual : 4;
+ u32 probablity : 8;
+ u32 object_distance : 16;
+ } shpd;
+ u32 val;
+ };
+};
+
+int amd_mp2_get_sensor_num(struct amd_mp2_dev *privdata, u8 *sensor_id);
+int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata);
+int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata);
+void amd_sfh_set_desc_ops(struct amd_mp2_ops *mp2_ops);
+
+#endif