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koreader/frontend/device/kobo/powerd.lua
Hzj_jie a4d5165f7a Several fixes in frontlight logic (#2991)
* Use PluginShare to exchange data between plugins

* Remove legacy code in reader.lua and kobo/device.lua, and move KOBO_LIGHT_ON_START to kobo/powerd.lua

* A better sync config logic

* Consider kobo without hardware frontlight toggle

* update frontlight widget once toggle is tapped.
2017-06-29 08:23:32 +02:00

112 lines
3.3 KiB
Lua

local BasePowerD = require("device/generic/powerd")
local NickelConf = require("device/kobo/nickel_conf")
local batt_state_folder =
"/sys/devices/platform/pmic_battery.1/power_supply/mc13892_bat/"
local KoboPowerD = BasePowerD:new{
-- Do not actively set front light to 0, it may confuse users -- pressing
-- hardware button won't take any effect.
fl_min = 1, fl_max = 100,
fl = nil,
batt_capacity_file = batt_state_folder .. "capacity",
is_charging_file = batt_state_folder .. "status",
}
-- TODO: Remove KOBO_LIGHT_ON_START
function KoboPowerD:_syncKoboLightOnStart()
local kobo_light_on_start = tonumber(KOBO_LIGHT_ON_START)
if kobo_light_on_start then
local new_intensity
local is_frontlight_on
if kobo_light_on_start > 0 then
new_intensity = math.min(kobo_light_on_start, 100)
is_frontlight_on = true
elseif kobo_light_on_start == 0 then
new_intensity = 0
is_frontlight_on = false
elseif kobo_light_on_start == -2 then
return
else -- if kobo_light_on_start == -1 or other unexpected value then
-- TODO(Hzj-jie): Read current frontlight states from OS.
return
end
NickelConf.frontLightLevel.set(new_intensity)
NickelConf.frontLightState.set(is_frontlight_on)
end
end
function KoboPowerD:init()
if self.device.hasFrontlight() then
local kobolight = require("ffi/kobolight")
local ok, light = pcall(kobolight.open)
if ok then
self.fl = light
self:_syncKoboLightOnStart()
end
end
end
function KoboPowerD:_syncIntensity(intensity)
if NickelConf.frontLightLevel.get() ~= intensity then
NickelConf.frontLightLevel.set(intensity)
end
end
function KoboPowerD:_syncNickelConf()
if not KOBO_SYNC_BRIGHTNESS_WITH_NICKEL then return end
if NickelConf.frontLightState.get() == nil then
self:_syncIntensity(self:frontlightIntensity())
else
if NickelConf.frontLightState.get() ~= self:isFrontlightOn() then
NickelConf.frontLightState.set(self:isFrontlightOn())
end
self:_syncIntensity(self.fl_intensity)
end
end
function KoboPowerD:frontlightIntensityHW()
return NickelConf.frontLightLevel.get()
end
function KoboPowerD:isFrontlightOnHW()
local result = NickelConf.frontLightState.get()
if result == nil then
return self.fl_intensity > 0
end
return result
end
function KoboPowerD:turnOffFrontlightHW() self:_setIntensity(0) end
function KoboPowerD:setIntensityHW(intensity)
if self.fl == nil then return end
self.fl:setBrightness(intensity)
self:_syncNickelConf()
end
function KoboPowerD:getCapacityHW()
return self:read_int_file(self.batt_capacity_file)
end
function KoboPowerD:isChargingHW()
return self:read_str_file(self.is_charging_file) == "Charging\n"
end
-- Turn off front light before suspend.
function KoboPowerD:beforeSuspend()
self:turnOffFrontlightHW()
end
-- Restore front light state after resume.
function KoboPowerD:afterResume()
if KOBO_LIGHT_ON_START and tonumber(KOBO_LIGHT_ON_START) > -1 then
self:setIntensity(math.min(KOBO_LIGHT_ON_START, 100))
elseif self:isFrontlightOn() then
self:turnOnFrontlightHW()
end
end
return KoboPowerD