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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>
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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4
drivers/gpu/drm/radeon/radeon_asic.h
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@@ -127,7 +127,7 @@ void r100_enable_bm(struct radeon_device *rdev);
void r100_set_common_regs(struct radeon_device *rdev);
void r100_bm_disable(struct radeon_device *rdev);
extern bool r100_gui_idle(struct radeon_device *rdev);
extern void r100_set_power_state(struct radeon_device *rdev);
extern void r100_set_power_state(struct radeon_device *rdev, bool static_switch);
extern void r100_get_power_state(struct radeon_device *rdev,
enum radeon_pm_action action);
extern void r100_pm_misc(struct radeon_device *rdev);
@@ -281,7 +281,7 @@ void r600_hpd_set_polarity(struct radeon_device *rdev,
enum radeon_hpd_id hpd);
extern void r600_ioctl_wait_idle(struct radeon_device *rdev, struct radeon_bo *bo);
extern bool r600_gui_idle(struct radeon_device *rdev);
extern void r600_set_power_state(struct radeon_device *rdev);
extern void r600_set_power_state(struct radeon_device *rdev, bool static_switch);
extern void r600_get_power_state(struct radeon_device *rdev,
enum radeon_pm_action action);
extern void r600_pm_misc(struct radeon_device *rdev);