[Bug 85021] New: radeon: Allow one to set "mid" to power_dpm_force_performance_level

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Mon Sep 22 19:14:15 PDT 2014


https://bugzilla.kernel.org/show_bug.cgi?id=85021

            Bug ID: 85021
           Summary: radeon: Allow one to set "mid" to
                    power_dpm_force_performance_level
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.16.2
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: higuita at gmx.net
        Regression: No

On a radeon module with dpm enable, one can set the
power_dpm_force_performance_level to auto, low and high. All fine, but my card
have a mid performance setup and is very useful, as the low is too slow when i
have some contant graphic usage (usually tvtime running), but auto and high are
too fast and hot for that usage, wasting energy and overheating the system
without need.

If i could setup the mid profile, the performance would be good, but not the
card maximum.

So the current setup is good for "little"/"a lot" GPU usage, but is missing the
mid support for those "moderate" GPU usage where the low is too litle and the
high is too much.

[    9.411247] switching to power state:
[    9.411343]     ui class: performance
[    9.411480]     internal class: ovrdrv 
[    9.411664]     caps: video 
[    9.411848]     uvd    vclk: 0 dclk: 0
[    9.411943]         power level 0    sclk: 15000 mclk: 42000 vddc: 1000
[    9.412047]         power level 1    sclk: 30000 mclk: 60000 vddc: 1080
[    9.412144]         power level 2    sclk: 80000 mclk: 70000 vddc: 1160
[    9.412241]     status: r

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