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drm/radeon/kms: use power states for dynamic reclocking

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Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2009-12-23 14:39:36 -05:00 committed by Dave Airlie
parent 516d0e46c8
commit 530079a8f3
2 changed files with 14 additions and 21 deletions
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4
drivers/gpu/drm/radeon/radeon.h
View File

@ -666,10 +666,6 @@ struct radeon_pm {
bool vblank_callback;
int active_crtcs;
int req_vblank;
uint32_t min_gpu_engine_clock;
uint32_t min_gpu_memory_clock;
uint32_t min_mode_engine_clock;
uint32_t min_mode_memory_clock;
fixed20_12 max_bandwidth;
fixed20_12 igp_sideport_mclk;
fixed20_12 igp_system_mclk;

31
drivers/gpu/drm/radeon/radeon_pm.c
View File

@ -26,7 +26,6 @@
#define RADEON_IDLE_LOOP_MS 100
#define RADEON_RECLOCK_DELAY_MS 200
static void radeon_pm_check_limits(struct radeon_device *rdev);
static void radeon_pm_set_clocks_locked(struct radeon_device *rdev);
static void radeon_pm_set_clocks(struct radeon_device *rdev);
static void radeon_pm_reclock_work_handler(struct work_struct *work);
@ -186,12 +185,21 @@ static void radeon_get_power_state(struct radeon_device *rdev,
radeon_pick_clock_mode(rdev, rdev->pm.requested_power_state, POWER_MODE_TYPE_HIGH);
break;
}
DRM_INFO("Requested: e: %d m: %d p: %d\n",
rdev->pm.requested_power_state->requested_clock_mode->sclk,
rdev->pm.requested_power_state->requested_clock_mode->mclk,
rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
}
static void radeon_set_power_state(struct radeon_device *rdev)
{
if (rdev->pm.requested_power_state == rdev->pm.current_power_state)
return;
DRM_INFO("Setting: e: %d m: %d p: %d\n",
rdev->pm.requested_power_state->requested_clock_mode->sclk,
rdev->pm.requested_power_state->requested_clock_mode->mclk,
rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
/* set pcie lanes */
/* set voltage */
/* set engine clock */
@ -216,8 +224,6 @@ int radeon_pm_init(struct radeon_device *rdev)
radeon_print_power_mode_info(rdev);
}
radeon_pm_check_limits(rdev);
if (radeon_debugfs_pm_init(rdev)) {
DRM_ERROR("Failed to register debugfs file for PM!\n");
}
@ -235,12 +241,6 @@ int radeon_pm_init(struct radeon_device *rdev)
return 0;
}
static void radeon_pm_check_limits(struct radeon_device *rdev)
{
rdev->pm.min_gpu_engine_clock = rdev->clock.default_sclk - 5000;
rdev->pm.min_gpu_memory_clock = rdev->clock.default_mclk - 5000;
}
void radeon_pm_compute_clocks(struct radeon_device *rdev)
{
struct drm_device *ddev = rdev->ddev;
@ -287,8 +287,6 @@ void radeon_pm_compute_clocks(struct radeon_device *rdev)
mutex_unlock(&rdev->pm.mutex);
}
} else if (count == 1) {
rdev->pm.min_mode_engine_clock = rdev->pm.min_gpu_engine_clock;
rdev->pm.min_mode_memory_clock = rdev->pm.min_gpu_memory_clock;
/* TODO: Increase clocks if needed for current mode */
if (rdev->pm.state == PM_STATE_MINIMUM) {
@ -326,23 +324,22 @@ static void radeon_pm_set_clocks_locked(struct radeon_device *rdev)
/*radeon_fence_wait_last(rdev);*/
switch (rdev->pm.planned_action) {
case PM_ACTION_UPCLOCK:
radeon_set_engine_clock(rdev, rdev->clock.default_sclk);
radeon_get_power_state(rdev, PM_ACTION_UPCLOCK);
rdev->pm.downclocked = false;
break;
case PM_ACTION_DOWNCLOCK:
radeon_set_engine_clock(rdev,
rdev->pm.min_mode_engine_clock);
radeon_get_power_state(rdev, PM_ACTION_DOWNCLOCK);
rdev->pm.downclocked = true;
break;
case PM_ACTION_MINIMUM:
radeon_set_engine_clock(rdev,
rdev->pm.min_gpu_engine_clock);
radeon_get_power_state(rdev, PM_ACTION_MINIMUM);
break;
case PM_ACTION_NONE:
radeon_get_power_state(rdev, PM_ACTION_NONE);
DRM_ERROR("%s: PM_ACTION_NONE\n", __func__);
break;
}
radeon_set_power_state(rdev);
rdev->pm.planned_action = PM_ACTION_NONE;
}