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drm/radeon/kms: prepare for more reclocking operations

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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Rafał Miłecki 2010-03-02 22:06:52 +01:00 committed by Dave Airlie
parent 839461d3b0
commit d0d6cb81e7
1 changed files with 29 additions and 10 deletions
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39
drivers/gpu/drm/radeon/radeon_pm.c
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@ -28,6 +28,7 @@
#define RADEON_RECLOCK_DELAY_MS 200
#define RADEON_WAIT_VBLANK_TIMEOUT 200
static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish);
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_idle_work_handler(struct work_struct *work);
@ -179,6 +180,16 @@ static void radeon_get_power_state(struct radeon_device *rdev,
rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
}
static inline void radeon_sync_with_vblank(struct radeon_device *rdev)
{
if (rdev->pm.active_crtcs) {
rdev->pm.vblank_sync = false;
wait_event_timeout(
rdev->irq.vblank_queue, rdev->pm.vblank_sync,
msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
}
}
static void radeon_set_power_state(struct radeon_device *rdev)
{
/* if *_clock_mode are the same, *_power_state are as well */
@ -189,11 +200,28 @@ static void radeon_set_power_state(struct radeon_device *rdev)
rdev->pm.requested_clock_mode->sclk,
rdev->pm.requested_clock_mode->mclk,
rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
/* set pcie lanes */
/* TODO */
/* set voltage */
/* TODO */
/* set engine clock */
radeon_sync_with_vblank(rdev);
radeon_pm_debug_check_in_vbl(rdev, false);
radeon_set_engine_clock(rdev, rdev->pm.requested_clock_mode->sclk);
radeon_pm_debug_check_in_vbl(rdev, true);
#if 0
/* set memory clock */
if (rdev->asic->set_memory_clock) {
radeon_sync_with_vblank(rdev);
radeon_pm_debug_check_in_vbl(rdev, false);
radeon_set_memory_clock(rdev, rdev->pm.requested_clock_mode->mclk);
radeon_pm_debug_check_in_vbl(rdev, true);
}
#endif
rdev->pm.current_power_state = rdev->pm.requested_power_state;
rdev->pm.current_clock_mode = rdev->pm.requested_clock_mode;
@ -333,10 +361,7 @@ static void radeon_pm_set_clocks_locked(struct radeon_device *rdev)
break;
}
/* check if we are in vblank */
radeon_pm_debug_check_in_vbl(rdev, false);
radeon_set_power_state(rdev);
radeon_pm_debug_check_in_vbl(rdev, true);
rdev->pm.planned_action = PM_ACTION_NONE;
}
@ -353,12 +378,7 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev)
rdev->pm.req_vblank |= (1 << 1);
drm_vblank_get(rdev->ddev, 1);
}
if (rdev->pm.active_crtcs) {
rdev->pm.vblank_sync = false;
wait_event_timeout(
rdev->irq.vblank_queue, rdev->pm.vblank_sync,
msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
}
radeon_pm_set_clocks_locked(rdev);
if (rdev->pm.req_vblank & (1 << 0)) {
rdev->pm.req_vblank &= ~(1 << 0);
drm_vblank_put(rdev->ddev, 0);
@ -368,7 +388,6 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev)
drm_vblank_put(rdev->ddev, 1);
}
radeon_pm_set_clocks_locked(rdev);
mutex_unlock(&rdev->cp.mutex);
}