[PATCH v4 09/12] drm/atomic: Add a function to reset connector TV properties

[Maxime Ripard <maxime.ripard@xxxxxxxxxxx>]

During the connector reset, if that connector has a TV property, it needs
to be reset to the value provided on the command line.

Provide a helper to do that.

Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>
---
 drivers/gpu/drm/drm_atomic_state_helper.c | 18 ++++++++++++++++++
 include/drm/drm_atomic_state_helper.h     |  1 +
 2 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
index 97ab26679b96..f4f0ada9c152 100644
--- a/drivers/gpu/drm/drm_atomic_state_helper.c
+++ b/drivers/gpu/drm/drm_atomic_state_helper.c
@@ -376,6 +376,24 @@ void drm_atomic_helper_connector_reset(struct drm_connector *connector)
 EXPORT_SYMBOL(drm_atomic_helper_connector_reset);
 
 /**
+ * drm_atomic_helper_connector_tv_reset - Resets TV connector properties
+ * @connector: DRM connector
+ *
+ * Resets the TV-related properties attached to a connector.
+ */
+void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector)
+{
+	struct drm_cmdline_mode *cmdline = &connector->cmdline_mode;
+	struct drm_connector_state *state = connector->state;
+
+	state->tv.margins.left = cmdline->tv_margins.left;
+	state->tv.margins.right = cmdline->tv_margins.right;
+	state->tv.margins.top = cmdline->tv_margins.top;
+	state->tv.margins.bottom = cmdline->tv_margins.bottom;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_tv_reset);
+
+/**
  * __drm_atomic_helper_connector_duplicate_state - copy atomic connector state
  * @connector: connector object
  * @state: atomic connector state
diff --git a/include/drm/drm_atomic_state_helper.h b/include/drm/drm_atomic_state_helper.h
index 4e6d2e7a40b8..e4577cc11689 100644
--- a/include/drm/drm_atomic_state_helper.h
+++ b/include/drm/drm_atomic_state_helper.h
@@ -62,6 +62,7 @@ void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
 void __drm_atomic_helper_connector_reset(struct drm_connector *connector,
 					 struct drm_connector_state *conn_state);
 void drm_atomic_helper_connector_reset(struct drm_connector *connector);
+void drm_atomic_helper_connector_tv_reset(struct drm_connector *connector);
 void
 __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
 					   struct drm_connector_state *state);
-- 
git-series 0.9.1
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