1*9005b650SMyungJoo HamWhat: /sys/class/devfreq/.../ 2*9005b650SMyungJoo HamDate: September 2011 3*9005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 4*9005b650SMyungJoo HamDescription: 5*9005b650SMyungJoo Ham Provide a place in sysfs for the devfreq objects. 6*9005b650SMyungJoo Ham This allows accessing various devfreq specific variables. 7*9005b650SMyungJoo Ham The name of devfreq object denoted as ... is same as the 8*9005b650SMyungJoo Ham name of device using devfreq. 9*9005b650SMyungJoo Ham 10*9005b650SMyungJoo HamWhat: /sys/class/devfreq/.../governor 11*9005b650SMyungJoo HamDate: September 2011 12*9005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 13*9005b650SMyungJoo HamDescription: 14*9005b650SMyungJoo Ham The /sys/class/devfreq/.../governor shows the name of the 15*9005b650SMyungJoo Ham governor used by the corresponding devfreq object. 16*9005b650SMyungJoo Ham 17*9005b650SMyungJoo HamWhat: /sys/class/devfreq/.../cur_freq 18*9005b650SMyungJoo HamDate: September 2011 19*9005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 20*9005b650SMyungJoo HamDescription: 21*9005b650SMyungJoo Ham The /sys/class/devfreq/.../cur_freq shows the current 22*9005b650SMyungJoo Ham frequency of the corresponding devfreq object. 23*9005b650SMyungJoo Ham 24*9005b650SMyungJoo HamWhat: /sys/class/devfreq/.../central_polling 25*9005b650SMyungJoo HamDate: September 2011 26*9005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 27*9005b650SMyungJoo HamDescription: 28*9005b650SMyungJoo Ham The /sys/class/devfreq/.../central_polling shows whether 29*9005b650SMyungJoo Ham the devfreq ojbect is using devfreq-provided central 30*9005b650SMyungJoo Ham polling mechanism or not. 31*9005b650SMyungJoo Ham 32*9005b650SMyungJoo HamWhat: /sys/class/devfreq/.../polling_interval 33*9005b650SMyungJoo HamDate: September 2011 34*9005b650SMyungJoo HamContact: MyungJoo Ham <myungjoo.ham@samsung.com> 35*9005b650SMyungJoo HamDescription: 36*9005b650SMyungJoo Ham The /sys/class/devfreq/.../polling_interval shows and sets 37*9005b650SMyungJoo Ham the requested polling interval of the corresponding devfreq 38*9005b650SMyungJoo Ham object. The values are represented in ms. If the value is 39*9005b650SMyungJoo Ham less than 1 jiffy, it is considered to be 0, which means 40*9005b650SMyungJoo Ham no polling. This value is meaningless if the governor is 41*9005b650SMyungJoo Ham not polling; thus. If the governor is not using 42*9005b650SMyungJoo Ham devfreq-provided central polling 43*9005b650SMyungJoo Ham (/sys/class/devfreq/.../central_polling is 0), this value 44*9005b650SMyungJoo Ham may be useless. 45