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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * SCMI Message Protocol driver NXP extension header
4 *
5 * Copyright 2024 NXP.
6 */
7
8#ifndef _LINUX_SCMI_NXP_PROTOCOL_H
9#define _LINUX_SCMI_NXP_PROTOCOL_H
10
11#include <linux/bitfield.h>
12#include <linux/device.h>
13#include <linux/notifier.h>
14#include <linux/scmi_protocol.h>
15#include <linux/types.h>
16
17#define SCMI_PROTOCOL_IMX_LMM 0x80
18#define SCMI_PROTOCOL_IMX_BBM 0x81
19#define SCMI_PROTOCOL_IMX_CPU 0x82
20#define SCMI_PROTOCOL_IMX_MISC 0x84
21
22#define SCMI_IMX_VENDOR "NXP"
23#define SCMI_IMX_SUBVENDOR "IMX"
24
25struct scmi_imx_bbm_proto_ops {
26 int (*rtc_time_set)(const struct scmi_protocol_handle *ph, u32 id,
27 uint64_t sec);
28 int (*rtc_time_get)(const struct scmi_protocol_handle *ph, u32 id,
29 u64 *val);
30 int (*rtc_alarm_set)(const struct scmi_protocol_handle *ph, u32 id,
31 bool enable, u64 sec);
32 int (*button_get)(const struct scmi_protocol_handle *ph, u32 *state);
33};
34
35enum scmi_nxp_notification_events {
36 SCMI_EVENT_IMX_BBM_RTC = 0x0,
37 SCMI_EVENT_IMX_BBM_BUTTON = 0x1,
38 SCMI_EVENT_IMX_MISC_CONTROL = 0x0,
39};
40
41struct scmi_imx_bbm_notif_report {
42 bool is_rtc;
43 bool is_button;
44 ktime_t timestamp;
45 unsigned int rtc_id;
46 unsigned int rtc_evt;
47};
48
49struct scmi_imx_misc_ctrl_notify_report {
50 ktime_t timestamp;
51 unsigned int ctrl_id;
52 unsigned int flags;
53};
54
55struct scmi_imx_misc_proto_ops {
56 int (*misc_ctrl_set)(const struct scmi_protocol_handle *ph, u32 id,
57 u32 num, u32 *val);
58 int (*misc_ctrl_get)(const struct scmi_protocol_handle *ph, u32 id,
59 u32 *num, u32 *val);
60 int (*misc_ctrl_req_notify)(const struct scmi_protocol_handle *ph,
61 u32 ctrl_id, u32 evt_id, u32 flags);
62 int (*misc_syslog)(const struct scmi_protocol_handle *ph, u16 *size,
63 void *array);
64};
65
66/* See LMM_ATTRIBUTES in imx95.rst */
67#define LMM_ID_DISCOVER 0xFFFFFFFFU
68#define LMM_MAX_NAME 16
69
70enum scmi_imx_lmm_state {
71 LMM_STATE_LM_OFF,
72 LMM_STATE_LM_ON,
73 LMM_STATE_LM_SUSPEND,
74 LMM_STATE_LM_POWERED,
75};
76
77struct scmi_imx_lmm_info {
78 u32 lmid;
79 enum scmi_imx_lmm_state state;
80 u32 errstatus;
81 u8 name[LMM_MAX_NAME];
82};
83
84struct scmi_imx_lmm_proto_ops {
85 int (*lmm_power_boot)(const struct scmi_protocol_handle *ph, u32 lmid,
86 bool boot);
87 int (*lmm_info)(const struct scmi_protocol_handle *ph, u32 lmid,
88 struct scmi_imx_lmm_info *info);
89 int (*lmm_reset_vector_set)(const struct scmi_protocol_handle *ph,
90 u32 lmid, u32 cpuid, u32 flags, u64 vector);
91 int (*lmm_shutdown)(const struct scmi_protocol_handle *ph, u32 lmid,
92 u32 flags);
93};
94
95struct scmi_imx_cpu_proto_ops {
96 int (*cpu_reset_vector_set)(const struct scmi_protocol_handle *ph,
97 u32 cpuid, u64 vector, bool start,
98 bool boot, bool resume);
99 int (*cpu_start)(const struct scmi_protocol_handle *ph, u32 cpuid,
100 bool start);
101 int (*cpu_started)(const struct scmi_protocol_handle *ph, u32 cpuid,
102 bool *started);
103};
104#endif