19005b650SMyungJoo HamWhat: /sys/class/devfreq/.../ 29005b650SMyungJoo HamDate: September 2011 39005b650SMyungJoo HamContact: MyungJoo Ham <[email protected]> 49005b650SMyungJoo HamDescription: 59005b650SMyungJoo Ham Provide a place in sysfs for the devfreq objects. 69005b650SMyungJoo Ham This allows accessing various devfreq specific variables. 79005b650SMyungJoo Ham The name of devfreq object denoted as ... is same as the 89005b650SMyungJoo Ham name of device using devfreq. 99005b650SMyungJoo Ham 109005b650SMyungJoo HamWhat: /sys/class/devfreq/.../governor 119005b650SMyungJoo HamDate: September 2011 129005b650SMyungJoo HamContact: MyungJoo Ham <[email protected]> 139005b650SMyungJoo HamDescription: 149005b650SMyungJoo Ham The /sys/class/devfreq/.../governor shows the name of the 159005b650SMyungJoo Ham governor used by the corresponding devfreq object. 169005b650SMyungJoo Ham 179005b650SMyungJoo HamWhat: /sys/class/devfreq/.../cur_freq 189005b650SMyungJoo HamDate: September 2011 199005b650SMyungJoo HamContact: MyungJoo Ham <[email protected]> 209005b650SMyungJoo HamDescription: 219005b650SMyungJoo Ham The /sys/class/devfreq/.../cur_freq shows the current 229005b650SMyungJoo Ham frequency of the corresponding devfreq object. 239005b650SMyungJoo Ham 249005b650SMyungJoo HamWhat: /sys/class/devfreq/.../central_polling 259005b650SMyungJoo HamDate: September 2011 269005b650SMyungJoo HamContact: MyungJoo Ham <[email protected]> 279005b650SMyungJoo HamDescription: 289005b650SMyungJoo Ham The /sys/class/devfreq/.../central_polling shows whether 299005b650SMyungJoo Ham the devfreq ojbect is using devfreq-provided central 309005b650SMyungJoo Ham polling mechanism or not. 319005b650SMyungJoo Ham 329005b650SMyungJoo HamWhat: /sys/class/devfreq/.../polling_interval 339005b650SMyungJoo HamDate: September 2011 349005b650SMyungJoo HamContact: MyungJoo Ham <[email protected]> 359005b650SMyungJoo HamDescription: 369005b650SMyungJoo Ham The /sys/class/devfreq/.../polling_interval shows and sets 379005b650SMyungJoo Ham the requested polling interval of the corresponding devfreq 389005b650SMyungJoo Ham object. The values are represented in ms. If the value is 399005b650SMyungJoo Ham less than 1 jiffy, it is considered to be 0, which means 409005b650SMyungJoo Ham no polling. This value is meaningless if the governor is 419005b650SMyungJoo Ham not polling; thus. If the governor is not using 429005b650SMyungJoo Ham devfreq-provided central polling 439005b650SMyungJoo Ham (/sys/class/devfreq/.../central_polling is 0), this value 449005b650SMyungJoo Ham may be useless. 45*ce26c5bbSMyungJoo Ham 46*ce26c5bbSMyungJoo HamWhat: /sys/class/devfreq/.../userspace/set_freq 47*ce26c5bbSMyungJoo HamDate: September 2011 48*ce26c5bbSMyungJoo HamContact: MyungJoo Ham <[email protected]> 49*ce26c5bbSMyungJoo HamDescription: 50*ce26c5bbSMyungJoo Ham The /sys/class/devfreq/.../userspace/set_freq shows and 51*ce26c5bbSMyungJoo Ham sets the requested frequency for the devfreq object if 52*ce26c5bbSMyungJoo Ham userspace governor is in effect. 53