it should print something like the following:
Current power state: 2 (x MHz Core Clock, y MHz Memory Clock)
And I could change the power state by entering e.g.: echo 1 > /sys/*/radeon/power_state
And available power states for current graphics card would be available in another file, e.g. /sys/*/radeon/power_states, which would be readonly.
In that case, determining which power state should be used in current moment could be left to the higher-level programs, e.g. PowerDevil, laptop-mode, or some custom user scripts.
Is it possible to enable this way of switching power states in radeon driver? In this way works the iwl3945 drivers's power management (of course iwl3945 is the WiFi driver, and I'm just curious if it's possible to create the similar power management architecture for graphics driver as is for wifi driver?)
Thank you in advance for your answers.