8  *     http://www.apache.org/licenses/LICENSE-2.0
41     // with iio-hwmon nodes with a single sensor.  Typically  in findPhandleMatch()
42     // device trees are defined with all the iio sensors in a  in findPhandleMatch()
43     // single iio-hwmon node so it would be nice to add support  in findPhandleMatch()
47     // with multiple iio-hwmon nodes - one for each sensor.  in findPhandleMatch()
50     ioChannelsPath /= "io-channels";  in findPhandleMatch()
87     // Follow the hwmon instance (/sys/class/hwmon/hwmon<N>)  in findCalloutPath()
101     // See if the device is backed by the iio-hwmon driver.  in findCalloutPath()
108         // Not backed by iio-hwmon.  The device pointed to  in findCalloutPath()
113     // Find the DT path to the iio-hwmon platform device.  in findCalloutPath()
126     // Search /sys/bus/iio/devices for the phandle in io-channels.  in findCalloutPath()
128     // iio device as the callout device.  in findCalloutPath()
129     static constexpr auto iioDevices = "/sys/bus/iio/devices";  in findCalloutPath()
148             // This is the iio device referred to by io-channels.  in findCalloutPath()
149             // Remove iio:device<N>.  in findCalloutPath()
166     static constexpr auto hwmonRoot = "/sys/class/hwmon";  in findHwmonFromOFPath()
181             // realpath may encounter ENOENT (Hwmon  in findHwmonFromOFPath()
192         // Try to find HWMON instance via phandle values.  in findHwmonFromOFPath()
193         // Used for IIO device drivers.  in findHwmonFromOFPath()
208     p /= "hwmon";  in findHwmonFromDevPath()
214         // been converted to '--'s.  Convert them back now.  in findHwmonFromDevPath()
217         while ((pos = path.find("--")) != std::string::npos)  in findHwmonFromDevPath()
225                 return (d.path().filename().string().find("hwmon") !=  in findHwmonFromDevPath()
230             return hwmonInst->path();  in findHwmonFromDevPath()
236                        "Unable to find hwmon directory from the dev path: {}\n",  in findHwmonFromDevPath()