framework/device/hardware.go

// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package device

var (
	UnknownHardware = product("unknown", "unknown", UnknownChipset)

	productsByCodename = map[string]Hardware{}
	productsByName     = map[string]Hardware{}
)

func product(codename string, name string, chipset Chipset) Hardware {
	product := Hardware{
		Name:    name,
		Chipset: chipset,
	}
	productsByCodename[codename] = product
	productsByName[name] = product
	return product
}

// HardwareByName looks up a hardware description by product name.
// If the product is not known, then a hardware object with no cores an an UnknownGPU will be returned.
func HardwareByName(name string) Hardware {
	h, ok := productsByCodename[name]
	if !ok {
		h, ok = productsByName[name]
	}
	if !ok {
		h = Hardware{
			Name:    name,
			Chipset: UnknownChipset,
		}
	}
	return h
}

// SameHardware returns true if the two hardware objects are a match.
func SameHardware(a, b Hardware) bool {
	// If the product name is set, treat it as an authoratitive comparison point
	if a.Name != "" && b.Name != "" {
		return a.Name == b.Name
	}
	return SameChipset(a.Chipset, b.Chipset)
}