73 lines
1.9 KiB
Lua
73 lines
1.9 KiB
Lua
---------------------------------------------------
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-- Licensed under the GNU General Public License v2
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-- * (c) 2009, Adrian C. <anrxc.sysphere.org>
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---------------------------------------------------
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-- {{{ Grab environment
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local tonumber = tonumber
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local io = { open = io.open }
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local setmetatable = setmetatable
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local string = {
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find = string.find,
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match = string.match
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}
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-- }}}
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-- Cpufreq: provides freq, voltage and governor info for a requested CPU
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module("vicious.cpufreq")
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-- {{{ CPU frequency widget type
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local function worker(format, cpuid)
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--local governor_state = {
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-- ["ondemand"] = "↯",
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-- ["powersave"] = "⌁",
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-- ["userspace"] = "°",
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-- ["performance"] = "⚡",
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-- ["conservative"] = "↯"
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--}
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-- Default voltage values
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local voltage = { v = "N/A", mv = "N/A" }
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-- Get the current frequency
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local f = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_cur_freq")
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local freq = f:read("*line")
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f:close()
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-- Calculate MHz and GHz
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local freqmhz = freq / 1000
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local freqghz = freqmhz / 1000
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-- Get the current voltage
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local f = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_voltages")
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if f then for line in f:lines() do
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if string.find(line, "^"..freq) then
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voltage.mv = tonumber(string.match(line, "[%d]+[%s]([%d]+)"))
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break
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end
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end
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f:close()
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-- Calculate voltage from mV
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voltage.v = voltage.mv / 1000
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end
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-- Get the current governor
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local f = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_governor")
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local governor = f:read("*line")
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f:close()
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-- Represent the governor as a symbol
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--local governor = governor_state[governor] or governor
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return {freqmhz, freqghz, voltage.mv, voltage.v, governor}
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end
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-- }}}
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setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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