drm/radeon/kms: prepare for more reclocking operations
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -28,6 +28,7 @@
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#define RADEON_RECLOCK_DELAY_MS 200
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#define RADEON_WAIT_VBLANK_TIMEOUT 200
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static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish);
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static void radeon_pm_set_clocks_locked(struct radeon_device *rdev);
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static void radeon_pm_set_clocks(struct radeon_device *rdev);
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static void radeon_pm_idle_work_handler(struct work_struct *work);
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@ -179,6 +180,16 @@ static void radeon_get_power_state(struct radeon_device *rdev,
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rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
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}
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static inline void radeon_sync_with_vblank(struct radeon_device *rdev)
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{
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if (rdev->pm.active_crtcs) {
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rdev->pm.vblank_sync = false;
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wait_event_timeout(
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rdev->irq.vblank_queue, rdev->pm.vblank_sync,
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msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
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}
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}
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static void radeon_set_power_state(struct radeon_device *rdev)
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{
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/* if *_clock_mode are the same, *_power_state are as well */
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@ -189,11 +200,28 @@ static void radeon_set_power_state(struct radeon_device *rdev)
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rdev->pm.requested_clock_mode->sclk,
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rdev->pm.requested_clock_mode->mclk,
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rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
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/* set pcie lanes */
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/* TODO */
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/* set voltage */
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/* TODO */
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/* set engine clock */
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radeon_sync_with_vblank(rdev);
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radeon_pm_debug_check_in_vbl(rdev, false);
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radeon_set_engine_clock(rdev, rdev->pm.requested_clock_mode->sclk);
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radeon_pm_debug_check_in_vbl(rdev, true);
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#if 0
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/* set memory clock */
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if (rdev->asic->set_memory_clock) {
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radeon_sync_with_vblank(rdev);
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radeon_pm_debug_check_in_vbl(rdev, false);
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radeon_set_memory_clock(rdev, rdev->pm.requested_clock_mode->mclk);
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radeon_pm_debug_check_in_vbl(rdev, true);
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}
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#endif
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rdev->pm.current_power_state = rdev->pm.requested_power_state;
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rdev->pm.current_clock_mode = rdev->pm.requested_clock_mode;
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@ -333,10 +361,7 @@ static void radeon_pm_set_clocks_locked(struct radeon_device *rdev)
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break;
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}
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/* check if we are in vblank */
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radeon_pm_debug_check_in_vbl(rdev, false);
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radeon_set_power_state(rdev);
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radeon_pm_debug_check_in_vbl(rdev, true);
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rdev->pm.planned_action = PM_ACTION_NONE;
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}
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@ -353,12 +378,7 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev)
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rdev->pm.req_vblank |= (1 << 1);
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drm_vblank_get(rdev->ddev, 1);
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}
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if (rdev->pm.active_crtcs) {
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rdev->pm.vblank_sync = false;
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wait_event_timeout(
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rdev->irq.vblank_queue, rdev->pm.vblank_sync,
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msecs_to_jiffies(RADEON_WAIT_VBLANK_TIMEOUT));
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}
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radeon_pm_set_clocks_locked(rdev);
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if (rdev->pm.req_vblank & (1 << 0)) {
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rdev->pm.req_vblank &= ~(1 << 0);
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drm_vblank_put(rdev->ddev, 0);
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@ -368,7 +388,6 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev)
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drm_vblank_put(rdev->ddev, 1);
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}
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radeon_pm_set_clocks_locked(rdev);
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mutex_unlock(&rdev->cp.mutex);
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}
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