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----------------------------------------------------------
-- Licensed under the GNU General Public License version 2
-- * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
----------------------------------------------------------
-- {{{ Grab environment
local io = { open = io.open }
local setmetatable = setmetatable
local string = {
find = string.find,
match = string.match
}
-- }}}
-- Cpufreq: provides freq, voltage and governor info for a requested CPU
module("vicious.cpufreq")
-- {{{ CPU frequency widget type
local function worker(format, cpuid)
--local governor_state = {
-- ["ondemand"] = "↯",
-- ["powersave"] = "⌁",
-- ["userspace"] = "°",
-- ["performance"] = "⚡",
-- ["conservative"] = "↯"
--}
-- Get the current frequency
local ffreq = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_cur_freq")
local freq = ffreq:read("*line")
ffreq:close()
-- Calculate MHz and GHz
local freqmhz = freq / 1000
local freqghz = freqmhz / 1000
-- Get the current voltage
local fvolt = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_voltages")
for line in fvolt:lines() do
if line:find("^"..freq) then
voltagemv = line:match("[%d]+[%s]([%d]+)")
break
end
end
fvolt:close()
-- Calculate voltage from mV
local voltagev = voltagemv / 1000
-- Get the current governor
local fgov = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_governor")
local governor = fgov:read("*line")
fgov:close()
-- Represent the governor as a symbol
--local governor = governor_state[governor] or governor
return {freqmhz, freqghz, voltagemv, voltagev, governor}
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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