From 237470c8f45190b213e3a173ce6ae1a74b3e11fe Mon Sep 17 00:00:00 2001
From: "Adrian C. (anrxc)" <anrxc@sysphere.org>
Date: Sun, 14 Mar 2010 01:55:33 +0100
Subject: API: transform widgets namespace table to a directory

---
 widgets/cpufreq.lua | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 widgets/cpufreq.lua

(limited to 'widgets/cpufreq.lua')

diff --git a/widgets/cpufreq.lua b/widgets/cpufreq.lua
new file mode 100644
index 0000000..7f60f5a
--- /dev/null
+++ b/widgets/cpufreq.lua
@@ -0,0 +1,54 @@
+---------------------------------------------------
+-- Licensed under the GNU General Public License v2
+--  * (c) 2010, Adrian C. <anrxc@sysphere.org>
+---------------------------------------------------
+
+-- {{{ Grab environment
+local tonumber = tonumber
+local setmetatable = setmetatable
+local string = { match = string.match }
+local helpers = require("vicious.helpers")
+-- }}}
+
+
+-- Cpufreq: provides freq, voltage and governor info for a requested CPU
+module("vicious.widgets.cpufreq")
+
+
+-- {{{ CPU frequency widget type
+local function worker(format, cpuid)
+    local cpufreq = helpers.pathtotable("/sys/devices/system/cpu/"..cpuid.."/cpufreq")
+    local governor_state = {
+       ["ondemand\n"]     = "↯",
+       ["powersave\n"]    = "⌁",
+       ["userspace\n"]    = "¤",
+       ["performance\n"]  = "⚡",
+       ["conservative\n"] = "↯"
+    }
+    -- Default voltage values
+    local voltage = { v  = "N/A", mv = "N/A" }
+
+
+    -- Get the current frequency
+    local freq = tonumber(cpufreq.scaling_cur_freq)
+    -- Calculate MHz and GHz
+    local freqmhz = freq / 1000
+    local freqghz = freqmhz / 1000
+
+    -- Get the current voltage
+    if cpufreq.scaling_voltages then
+        voltage.mv = tonumber(string.match(cpufreq.scaling_voltages, freq.."[%s]([%d]+)"))
+        -- Calculate voltage from mV
+        voltage.v = voltage.mv / 1000
+    end
+
+    -- Get the current governor
+    local governor = cpufreq.scaling_governor
+    -- Represent the governor as a symbol
+    governor = governor_state[governor] or governor
+
+    return {freqmhz, freqghz, voltage.mv, voltage.v, governor}
+end
+-- }}}
+
+setmetatable(_M, { __call = function(_, ...) return worker(...) end })
-- 
cgit v1.2.3