drm/radeon/kms/pm: rework power management

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Add two new sysfs attributes:
- dynpm
- power_state

Echoing 0/1 to dynpm disables/enables dynamic power management.
The driver scales the sclk dynamically based on the number of
queued fences.  dynpm only scales sclk dynamically in single head
mode.

Echoing x.y to power_state selects a static power state (x) and clock
mode (y).  This allows you to statically select a power state and clock
mode.  Selecting a static clock mode will disable dynpm.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

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This commit is contained in:

Alex Deucher 2010-04-24 14:50:23 -04:00 • committed by Dave Airlie

parent 49e02b7306

commit a424816fb3

5 changed files with 229 additions and 56 deletions

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66

drivers/gpu/drm/radeon/r100.c

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69

drivers/gpu/drm/radeon/r600.c

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7

drivers/gpu/drm/radeon/radeon.h

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4

drivers/gpu/drm/radeon/radeon_asic.h

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139

drivers/gpu/drm/radeon/radeon_pm.c

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