drm/radeon/kms/pm: rework power management

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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 378db67ba2d8..8a1278629994 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -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);