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path: root/drivers/gpu/drm/drm_atomic_helper.c
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Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
-rw-r--r--drivers/gpu/drm/drm_atomic_helper.c24
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 9e1ad493e689..f9170b4b22e7 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1115,9 +1115,7 @@ disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state)
* @old_state: atomic state object with old state structures
*
* This function updates all the various legacy modeset state pointers in
- * connectors, encoders and CRTCs. It also updates the timestamping constants
- * used for precise vblank timestamps by calling
- * drm_calc_timestamping_constants().
+ * connectors, encoders and CRTCs.
*
* Drivers can use this for building their own atomic commit if they don't have
* a pure helper-based modeset implementation.
@@ -1186,13 +1184,30 @@ drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,
crtc->x = new_plane_state->src_x >> 16;
crtc->y = new_plane_state->src_y >> 16;
}
+ }
+}
+EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state);
+/**
+ * drm_atomic_helper_calc_timestamping_constants - update vblank timestamping constants
+ * @state: atomic state object
+ *
+ * Updates the timestamping constants used for precise vblank timestamps
+ * by calling drm_calc_timestamping_constants() for all enabled crtcs in @state.
+ */
+void drm_atomic_helper_calc_timestamping_constants(struct drm_atomic_state *state)
+{
+ struct drm_crtc_state *new_crtc_state;
+ struct drm_crtc *crtc;
+ int i;
+
+ for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
if (new_crtc_state->enable)
drm_calc_timestamping_constants(crtc,
&new_crtc_state->adjusted_mode);
}
}
-EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state);
+EXPORT_SYMBOL(drm_atomic_helper_calc_timestamping_constants);
static void
crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state)
@@ -1276,6 +1291,7 @@ void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev,
disable_outputs(dev, old_state);
drm_atomic_helper_update_legacy_modeset_state(dev, old_state);
+ drm_atomic_helper_calc_timestamping_constants(old_state);
crtc_set_mode(dev, old_state);
}