[PATCH v1 3/7] drm/bridge_connector: rely on drm_kms_helper_poll_* for HPD enablement

[Dmitry Baryshkov <dmitry.baryshkov@linaro.org>]

Use drm_connector's helpers enable_hpd and disable_hpd to enable and
disable HPD automatically by the means of drm_kms_helper_poll_*
functions. As the drm_bridge_connector_enable_hpd() and
drm_bridge_connector_disable_hpd() functions are now unused, replace
them with stubs to ease driver migration.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/drm_bridge_connector.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
index 60923cdfe8e1..1592da3b9403 100644
--- a/drivers/gpu/drm/drm_bridge_connector.c
+++ b/drivers/gpu/drm/drm_bridge_connector.c
@@ -136,6 +136,11 @@ static void drm_bridge_connector_hpd_cb(void *cb_data,
  * This is typically used by display drivers in their resume handler.
  */
 void drm_bridge_connector_enable_hpd(struct drm_connector *connector)
+{
+}
+EXPORT_SYMBOL_GPL(drm_bridge_connector_enable_hpd);
+
+static void _drm_bridge_connector_enable_hpd(struct drm_connector *connector)
 {
 	struct drm_bridge_connector *bridge_connector =
 		to_drm_bridge_connector(connector);
@@ -145,7 +150,6 @@ void drm_bridge_connector_enable_hpd(struct drm_connector *connector)
 		drm_bridge_hpd_enable(hpd, drm_bridge_connector_hpd_cb,
 				      bridge_connector);
 }
-EXPORT_SYMBOL_GPL(drm_bridge_connector_enable_hpd);
 
 /**
  * drm_bridge_connector_disable_hpd - Disable hot-plug detection for the
@@ -156,6 +160,11 @@ EXPORT_SYMBOL_GPL(drm_bridge_connector_enable_hpd);
  * This is typically used by display drivers in their suspend handler.
  */
 void drm_bridge_connector_disable_hpd(struct drm_connector *connector)
+{
+}
+EXPORT_SYMBOL_GPL(drm_bridge_connector_disable_hpd);
+
+static void _drm_bridge_connector_disable_hpd(struct drm_connector *connector)
 {
 	struct drm_bridge_connector *bridge_connector =
 		to_drm_bridge_connector(connector);
@@ -164,7 +173,6 @@ void drm_bridge_connector_disable_hpd(struct drm_connector *connector)
 	if (hpd)
 		drm_bridge_hpd_disable(hpd);
 }
-EXPORT_SYMBOL_GPL(drm_bridge_connector_disable_hpd);
 
 /* -----------------------------------------------------------------------------
  * Bridge Connector Functions
@@ -305,6 +313,8 @@ static int drm_bridge_connector_get_modes(struct drm_connector *connector)
 static const struct drm_connector_helper_funcs drm_bridge_connector_helper_funcs = {
 	.get_modes = drm_bridge_connector_get_modes,
 	/* No need for .mode_valid(), the bridges are checked by the core. */
+	.enable_hpd = _drm_bridge_connector_enable_hpd,
+	.disable_hpd = _drm_bridge_connector_disable_hpd,
 };
 
 /* -----------------------------------------------------------------------------
-- 
2.35.1