The atomic helpers need these to prepare a new state object when
starting a new atomic operation.
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_atomic.c | 35 +++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_display.c | 2 ++
drivers/gpu/drm/i915/intel_drv.h | 3 +++
3 files changed, 40 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index d44ff8f..9be1f16 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -197,3 +197,38 @@ intel_connector_atomic_get_property(struct drm_connector *connector,
return -EINVAL;
}
+
+/*
+ * intel_crtc_duplicate_state - duplicate crtc state
+ * @crtc: drm crtc
+ *
+ * Allocates and returns a copy of the crtc state (both common and
+ * Intel-specific) for the specified crtc.
+ *
+ * Returns: The newly allocated crtc state, or NULL on failure.
+ */
+struct drm_crtc_state *
+intel_crtc_duplicate_state(struct drm_crtc *crtc)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ if (WARN_ON(!intel_crtc->config))
+ return kzalloc(sizeof(*intel_crtc->config), GFP_KERNEL);
+
+ return kmemdup(intel_crtc->config, sizeof(*intel_crtc->config),
+ GFP_KERNEL);
+}
+
+/**
+ * intel_crtc_destroy_state - destroy crtc state
+ * @crtc: drm crtc
+ *
+ * Destroys the crtc state (both common and Intel-specific) for the
+ * specified crtc.
+ */
+void
+intel_crtc_destroy_state(struct drm_crtc *crtc,
+ struct drm_crtc_state *state)
+{
+ drm_atomic_helper_crtc_destroy_state(crtc, state);
+}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 82defd3..567ea33 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11571,6 +11571,8 @@ static const struct drm_crtc_funcs intel_crtc_funcs = {
.set_config = intel_crtc_set_config,
.destroy = intel_crtc_destroy,
.page_flip = intel_crtc_page_flip,
+ .atomic_duplicate_state = intel_crtc_duplicate_state,
+ .atomic_destroy_state = intel_crtc_destroy_state,
};
static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index bfe241c..b84c12a 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1270,6 +1270,9 @@ int intel_connector_atomic_get_property(struct drm_connector *connector,
const struct drm_connector_state *state,
struct drm_property *property,
uint64_t *val);
+struct drm_crtc_state *intel_crtc_duplicate_state(struct drm_crtc *crtc);
+void intel_crtc_destroy_state(struct drm_crtc *crtc,
+ struct drm_crtc_state *state);
/* intel_atomic_plane.c */
struct drm_plane_state *intel_plane_duplicate_state(struct drm_plane *plane);
--
1.8.5.1
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