Punit Agrawal | c7fc01c | 2015-11-23 12:32:10 +0000 | [diff] [blame] | 1 | # Copyright 2015 ARM Limited |
| 2 | # |
| 3 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | # you may not use this file except in compliance with the License. |
| 5 | # You may obtain a copy of the License at |
| 6 | # |
| 7 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | # |
| 9 | # Unless required by applicable law or agreed to in writing, software |
| 10 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | # See the License for the specific language governing permissions and |
| 13 | # limitations under the License. |
| 14 | |
| 15 | import re |
| 16 | |
| 17 | from devlib.module import Module |
| 18 | |
| 19 | class TripPoint(object): |
| 20 | def __init__(self, zone, _id): |
| 21 | self._id = _id |
| 22 | self.zone = zone |
| 23 | self.temp_node = 'trip_point_' + _id + '_temp' |
| 24 | self.type_node = 'trip_point_' + _id + '_type' |
| 25 | |
| 26 | @property |
| 27 | def target(self): |
| 28 | return self.zone.target |
| 29 | |
| 30 | def get_temperature(self): |
| 31 | """Returns the currently configured temperature of the trip point""" |
| 32 | temp_file = self.target.path.join(self.zone.path, self.temp_node) |
| 33 | return self.target.read_int(temp_file) |
| 34 | |
| 35 | def set_temperature(self, temperature): |
| 36 | temp_file = self.target.path.join(self.zone.path, self.temp_node) |
| 37 | self.target.write_value(temp_file, temperature) |
| 38 | |
| 39 | def get_type(self): |
| 40 | """Returns the type of trip point""" |
| 41 | type_file = self.target.path.join(self.zone.path, self.type_node) |
| 42 | return self.target.read_value(type_file) |
| 43 | |
| 44 | class ThermalZone(object): |
| 45 | def __init__(self, target, root, _id): |
| 46 | self.target = target |
| 47 | self.name = 'thermal_zone' + _id |
| 48 | self.path = target.path.join(root, self.name) |
| 49 | self.trip_points = {} |
| 50 | |
| 51 | for entry in self.target.list_directory(self.path): |
| 52 | re_match = re.match('^trip_point_([0-9]+)_temp', entry) |
| 53 | if re_match is not None: |
| 54 | self.add_trip_point(re_match.group(1)) |
| 55 | |
| 56 | def add_trip_point(self, _id): |
| 57 | self.trip_points[int(_id)] = TripPoint(self, _id) |
| 58 | |
| 59 | def is_enabled(self): |
| 60 | """Returns a boolean representing the 'mode' of the thermal zone""" |
| 61 | value = self.target.read_value(self.target.path.join(self.path, 'mode')) |
| 62 | return value == 'enabled' |
| 63 | |
Valentin Schneider | b54dc19 | 2017-07-26 11:39:49 +0100 | [diff] [blame] | 64 | def set_enabled(self, enabled=True): |
| 65 | value = 'enabled' if enabled else 'disabled' |
Punit Agrawal | c7fc01c | 2015-11-23 12:32:10 +0000 | [diff] [blame] | 66 | self.target.write_value(self.target.path.join(self.path, 'mode'), value) |
| 67 | |
| 68 | def get_temperature(self): |
| 69 | """Returns the temperature of the thermal zone""" |
| 70 | temp_file = self.target.path.join(self.path, 'temp') |
| 71 | return self.target.read_int(temp_file) |
| 72 | |
| 73 | class ThermalModule(Module): |
| 74 | name = 'thermal' |
| 75 | thermal_root = '/sys/class/thermal' |
| 76 | |
| 77 | @staticmethod |
| 78 | def probe(target): |
| 79 | |
| 80 | if target.file_exists(ThermalModule.thermal_root): |
| 81 | return True |
| 82 | |
| 83 | def __init__(self, target): |
| 84 | super(ThermalModule, self).__init__(target) |
| 85 | |
| 86 | self.zones = {} |
| 87 | self.cdevs = [] |
| 88 | |
| 89 | for entry in target.list_directory(self.thermal_root): |
| 90 | re_match = re.match('^(thermal_zone|cooling_device)([0-9]+)', entry) |
| 91 | |
| 92 | if re_match.group(1) == 'thermal_zone': |
| 93 | self.add_thermal_zone(re_match.group(2)) |
| 94 | elif re_match.group(1) == 'cooling_device': |
| 95 | # TODO |
| 96 | pass |
| 97 | |
| 98 | def add_thermal_zone(self, _id): |
| 99 | self.zones[int(_id)] = ThermalZone(self.target, self.thermal_root, _id) |
| 100 | |
| 101 | def disable_all_zones(self): |
| 102 | """Disables all the thermal zones in the target""" |
Valentin Schneider | b54dc19 | 2017-07-26 11:39:49 +0100 | [diff] [blame] | 103 | for zone in self.zones.itervalues(): |
| 104 | zone.set_enabled(False) |