drm/kms/radeon: Reorder vblank and pageflip interrupt handling.

In the vblank irq handler, calls to actual vblank handling,
or at least drm_handle_vblank(), need to happen before
calls to radeon_crtc_handle_flip().

Reason: The high precision pageflip timestamping
and some other pageflip optimizations will need the updated
vblank count and timestamps for the current vblank interval.

These are calculated in drm_handle_vblank(), therefore it
must go first.

Signed-off-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 16 insertions, 16 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index df3f37243222..25e84379e7c6 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2398,13 +2398,13 @@ restart_ih:
                         switch (src_data) {
                         case 0: /* D1 vblank */
                                 if (rdev->irq.stat_regs.evergreen.disp_int & LB_D1_VBLANK_INTERRUPT) {
-                                        if (rdev->irq.pflip[0])
-                                                radeon_crtc_handle_flip(rdev, 0);
                                         if (rdev->irq.crtc_vblank_int[0]) {
                                                 drm_handle_vblank(rdev->ddev, 0);
                                                 rdev->pm.vblank_sync = true;
                                                 wake_up(&rdev->irq.vblank_queue);
                                         }
+                                        if (rdev->irq.pflip[0])
+                                                radeon_crtc_handle_flip(rdev, 0);
                                         rdev->irq.stat_regs.evergreen.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
                                         DRM_DEBUG("IH: D1 vblank\n");
                                 }
@@ -2424,13 +2424,13 @@ restart_ih:
                         switch (src_data) {
                         case 0: /* D2 vblank */
                                 if (rdev->irq.stat_regs.evergreen.disp_int_cont & LB_D2_VBLANK_INTERRUPT) {
-                                        if (rdev->irq.pflip[1])
-                                                radeon_crtc_handle_flip(rdev, 1);
                                         if (rdev->irq.crtc_vblank_int[1]) {
                                                 drm_handle_vblank(rdev->ddev, 1);
                                                 rdev->pm.vblank_sync = true;
                                                 wake_up(&rdev->irq.vblank_queue);
                                         }
+                                        if (rdev->irq.pflip[1])
+                                                radeon_crtc_handle_flip(rdev, 1);
                                         rdev->irq.stat_regs.evergreen.disp_int_cont &= ~LB_D2_VBLANK_INTERRUPT;
                                         DRM_DEBUG("IH: D2 vblank\n");
                                 }
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index b2e29798a99d..2316f73db6c0 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -650,22 +650,22 @@ int r100_irq_process(struct radeon_device *rdev)
                 }
                 /* Vertical blank interrupts */
                 if (status & RADEON_CRTC_VBLANK_STAT) {
-                        if (rdev->irq.pflip[0])
-                                radeon_crtc_handle_flip(rdev, 0);
                         if (rdev->irq.crtc_vblank_int[0]) {
                                 drm_handle_vblank(rdev->ddev, 0);
                                 rdev->pm.vblank_sync = true;
                                 wake_up(&rdev->irq.vblank_queue);
                         }
+                        if (rdev->irq.pflip[0])
+                                radeon_crtc_handle_flip(rdev, 0);
                 }
                 if (status & RADEON_CRTC2_VBLANK_STAT) {
-                        if (rdev->irq.pflip[1])
-                                radeon_crtc_handle_flip(rdev, 1);
                         if (rdev->irq.crtc_vblank_int[1]) {
                                 drm_handle_vblank(rdev->ddev, 1);
                                 rdev->pm.vblank_sync = true;
                                 wake_up(&rdev->irq.vblank_queue);
                         }
+                        if (rdev->irq.pflip[1])
+                                radeon_crtc_handle_flip(rdev, 1);
                 }
                 if (status & RADEON_FP_DETECT_STAT) {
                         queue_hotplug = true;
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 15b95724c408..7057b392e005 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3294,13 +3294,13 @@ restart_ih:
                         switch (src_data) {
                         case 0: /* D1 vblank */
                                 if (rdev->irq.stat_regs.r600.disp_int & LB_D1_VBLANK_INTERRUPT) {
-                                        if (rdev->irq.pflip[0])
-                                                radeon_crtc_handle_flip(rdev, 0);
                                         if (rdev->irq.crtc_vblank_int[0]) {
                                                 drm_handle_vblank(rdev->ddev, 0);
                                                 rdev->pm.vblank_sync = true;
                                                 wake_up(&rdev->irq.vblank_queue);
                                         }
+                                        if (rdev->irq.pflip[0])
+                                                radeon_crtc_handle_flip(rdev, 0);
                                         rdev->irq.stat_regs.r600.disp_int &= ~LB_D1_VBLANK_INTERRUPT;
                                         DRM_DEBUG("IH: D1 vblank\n");
                                 }
@@ -3320,13 +3320,13 @@ restart_ih:
                         switch (src_data) {
                         case 0: /* D2 vblank */
                                 if (rdev->irq.stat_regs.r600.disp_int & LB_D2_VBLANK_INTERRUPT) {
-                                        if (rdev->irq.pflip[1])
-                                                radeon_crtc_handle_flip(rdev, 1);
                                         if (rdev->irq.crtc_vblank_int[1]) {
                                                 drm_handle_vblank(rdev->ddev, 1);
                                                 rdev->pm.vblank_sync = true;
                                                 wake_up(&rdev->irq.vblank_queue);
                                         }
+                                        if (rdev->irq.pflip[1])
+                                                radeon_crtc_handle_flip(rdev, 1);
                                         rdev->irq.stat_regs.r600.disp_int &= ~LB_D2_VBLANK_INTERRUPT;
                                         DRM_DEBUG("IH: D2 vblank\n");
                                 }
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 683652bea17c..9a85b1614c86 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -662,22 +662,22 @@ int rs600_irq_process(struct radeon_device *rdev)
                 }
                 /* Vertical blank interrupts */
                 if (G_007EDC_LB_D1_VBLANK_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {
-                        if (rdev->irq.pflip[0])
-                                radeon_crtc_handle_flip(rdev, 0);
                         if (rdev->irq.crtc_vblank_int[0]) {
                                 drm_handle_vblank(rdev->ddev, 0);
                                 rdev->pm.vblank_sync = true;
                                 wake_up(&rdev->irq.vblank_queue);
                         }
+                        if (rdev->irq.pflip[0])
+                                radeon_crtc_handle_flip(rdev, 0);
                 }
                 if (G_007EDC_LB_D2_VBLANK_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {
-                        if (rdev->irq.pflip[1])
-                                radeon_crtc_handle_flip(rdev, 1);
                         if (rdev->irq.crtc_vblank_int[1]) {
                                 drm_handle_vblank(rdev->ddev, 1);
                                 rdev->pm.vblank_sync = true;
                                 wake_up(&rdev->irq.vblank_queue);
                         }
+                        if (rdev->irq.pflip[1])
+                                radeon_crtc_handle_flip(rdev, 1);
                 }
                 if (G_007EDC_DC_HOT_PLUG_DETECT1_INTERRUPT(rdev->irq.stat_regs.r500.disp_int)) {
                         queue_hotplug = true;