xref: /openbmc/dbus-sensors/src/DeviceMgmt.hpp (revision d02ad49e)
1 #pragma once
2 
3 #include "Utils.hpp"
4 
5 #include <boost/container/flat_map.hpp>
6 
7 #include <functional>
8 #include <optional>
9 #include <string_view>
10 
11 struct I2CDeviceType
12 {
13     const char* name;
14     bool createsHWMon;
15 };
16 
17 struct I2CDeviceComparator
18 {
19     bool operator()(const std::string& a, const std::string& b) const noexcept
20     {
21         return strcasecmp(a.c_str(), b.c_str()) < 0;
22     }
23 };
24 
25 using I2CDeviceTypeMap =
26     boost::container::flat_map<std::string, I2CDeviceType, I2CDeviceComparator>;
27 
28 struct I2CDeviceParams
29 {
30     I2CDeviceParams(const I2CDeviceType& type, uint64_t bus, uint64_t address) :
31         type(&type), bus(bus), address(address){};
32 
33     const I2CDeviceType* type;
34     uint64_t bus;
35     uint64_t address;
36 
37     bool devicePresent(void) const;
38     bool deviceStatic(void) const;
39 };
40 
41 std::optional<I2CDeviceParams>
42     getI2CDeviceParams(const I2CDeviceTypeMap& dtmap,
43                        const SensorBaseConfigMap& cfg);
44 
45 class I2CDevice
46 {
47   public:
48     explicit I2CDevice(I2CDeviceParams params);
49     ~I2CDevice();
50 
51   private:
52     I2CDeviceParams params;
53 
54     int create(void) const;
55     int destroy(void) const;
56 };
57 
58 // HACK: this declaration "should" live in Utils.hpp, but that leads to a
59 // tangle of header-dependency hell because each header needs types declared
60 // in the other.
61 std::vector<std::unique_ptr<sdbusplus::bus::match_t>>
62     setupPropertiesChangedMatches(
63         sdbusplus::asio::connection& bus, const I2CDeviceTypeMap& typeMap,
64         const std::function<void(sdbusplus::message_t&)>& handler);
65