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, 5 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 16f0ea78ea9d..cdcf5eaf6714 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -814,7 +814,7 @@ struct radeon_asic {
         void (*ioctl_wait_idle)(struct radeon_device *rdev, struct radeon_bo *bo);
         bool (*gui_idle)(struct radeon_device *rdev);
         void (*get_power_state)(struct radeon_device *rdev, enum radeon_pm_action action);
-        void (*set_power_state)(struct radeon_device *rdev);
+        void (*set_power_state)(struct radeon_device *rdev, bool static_switch);
         void (*pm_misc)(struct radeon_device *rdev);
         void (*pm_prepare)(struct radeon_device *rdev);
         void (*pm_finish)(struct radeon_device *rdev);
@@ -1226,7 +1226,10 @@ static inline void radeon_ring_write(struct radeon_device *rdev, uint32_t v)
 #define radeon_hpd_set_polarity(rdev, hpd) (rdev)->asic->hpd_set_polarity((rdev), (hpd))
 #define radeon_gui_idle(rdev) (rdev)->asic->gui_idle((rdev))
 #define radeon_get_power_state(rdev, a) (rdev)->asic->get_power_state((rdev), (a))
-#define radeon_set_power_state(rdev) (rdev)->asic->set_power_state((rdev))
+#define radeon_set_power_state(rdev, s) (rdev)->asic->set_power_state((rdev), (s))
+#define radeon_pm_misc(rdev) (rdev)->asic->pm_misc((rdev))
+#define radeon_pm_prepare(rdev) (rdev)->asic->pm_prepare((rdev))
+#define radeon_pm_finish(rdev) (rdev)->asic->pm_finish((rdev))
 
 /* Common functions */
 /* AGP */