1 files changed, 114 insertions, 8 deletions

diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index bcd9611dabfd..7973f2589ced 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -250,6 +250,12 @@ void drm_kms_helper_poll_enable(struct drm_device *dev)
 
 	drm_connector_list_iter_begin(dev, &conn_iter);
 	drm_for_each_connector_iter(connector, &conn_iter) {
+		const struct drm_connector_helper_funcs *funcs =
+			connector->helper_private;
+
+		if (funcs && funcs->enable_hpd)
+			funcs->enable_hpd(connector);
+
 		if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT |
 					 DRM_CONNECTOR_POLL_DISCONNECT))
 			poll = true;
@@ -802,6 +808,30 @@ bool drm_kms_helper_is_poll_worker(void)
 }
 EXPORT_SYMBOL(drm_kms_helper_is_poll_worker);
 
+static void drm_kms_helper_poll_disable_fini(struct drm_device *dev, bool fini)
+{
+	struct drm_connector *connector;
+	struct drm_connector_list_iter conn_iter;
+
+	if (!dev->mode_config.poll_enabled)
+		return;
+
+	if (fini)
+		dev->mode_config.poll_enabled = false;
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		const struct drm_connector_helper_funcs *funcs =
+			connector->helper_private;
+
+		if (funcs && funcs->disable_hpd)
+			funcs->disable_hpd(connector);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
+}
+
 /**
  * drm_kms_helper_poll_disable - disable output polling
  * @dev: drm_device
@@ -818,9 +848,7 @@ EXPORT_SYMBOL(drm_kms_helper_is_poll_worker);
  */
 void drm_kms_helper_poll_disable(struct drm_device *dev)
 {
-	if (!dev->mode_config.poll_enabled)
-		return;
-	cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
+	drm_kms_helper_poll_disable_fini(dev, false);
 }
 EXPORT_SYMBOL(drm_kms_helper_poll_disable);
 
@@ -858,11 +886,7 @@ EXPORT_SYMBOL(drm_kms_helper_poll_init);
  */
 void drm_kms_helper_poll_fini(struct drm_device *dev)
 {
-	if (!dev->mode_config.poll_enabled)
-		return;
-
-	dev->mode_config.poll_enabled = false;
-	cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
+	drm_kms_helper_poll_disable_fini(dev, true);
 }
 EXPORT_SYMBOL(drm_kms_helper_poll_fini);
 
@@ -1146,3 +1170,85 @@ int drm_connector_helper_get_modes(struct drm_connector *connector)
 	return count;
 }
 EXPORT_SYMBOL(drm_connector_helper_get_modes);
+
+/**
+ * drm_connector_helper_tv_get_modes - Fills the modes availables to a TV connector
+ * @connector: The connector
+ *
+ * Fills the available modes for a TV connector based on the supported
+ * TV modes, and the default mode expressed by the kernel command line.
+ *
+ * This can be used as the default TV connector helper .get_modes() hook
+ * if the driver does not need any special processing.
+ *
+ * Returns:
+ * The number of modes added to the connector.
+ */
+int drm_connector_helper_tv_get_modes(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_property *tv_mode_property =
+		dev->mode_config.tv_mode_property;
+	struct drm_cmdline_mode *cmdline = &connector->cmdline_mode;
+	unsigned int ntsc_modes = BIT(DRM_MODE_TV_MODE_NTSC) |
+		BIT(DRM_MODE_TV_MODE_NTSC_443) |
+		BIT(DRM_MODE_TV_MODE_NTSC_J) |
+		BIT(DRM_MODE_TV_MODE_PAL_M);
+	unsigned int pal_modes = BIT(DRM_MODE_TV_MODE_PAL) |
+		BIT(DRM_MODE_TV_MODE_PAL_N) |
+		BIT(DRM_MODE_TV_MODE_SECAM);
+	unsigned int tv_modes[2] = { UINT_MAX, UINT_MAX };
+	unsigned int i, supported_tv_modes = 0;
+
+	if (!tv_mode_property)
+		return 0;
+
+	for (i = 0; i < tv_mode_property->num_values; i++)
+		supported_tv_modes |= BIT(tv_mode_property->values[i]);
+
+	if ((supported_tv_modes & ntsc_modes) &&
+	    (supported_tv_modes & pal_modes)) {
+		uint64_t default_mode;
+
+		if (drm_object_property_get_default_value(&connector->base,
+							  tv_mode_property,
+							  &default_mode))
+			return 0;
+
+		if (cmdline->tv_mode_specified)
+			default_mode = cmdline->tv_mode;
+
+		if (BIT(default_mode) & ntsc_modes) {
+			tv_modes[0] = DRM_MODE_TV_MODE_NTSC;
+			tv_modes[1] = DRM_MODE_TV_MODE_PAL;
+		} else {
+			tv_modes[0] = DRM_MODE_TV_MODE_PAL;
+			tv_modes[1] = DRM_MODE_TV_MODE_NTSC;
+		}
+	} else if (supported_tv_modes & ntsc_modes) {
+		tv_modes[0] = DRM_MODE_TV_MODE_NTSC;
+	} else if (supported_tv_modes & pal_modes) {
+		tv_modes[0] = DRM_MODE_TV_MODE_PAL;
+	} else {
+		return 0;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+		struct drm_display_mode *mode;
+
+		if (tv_modes[i] == DRM_MODE_TV_MODE_NTSC)
+			mode = drm_mode_analog_ntsc_480i(dev);
+		else if (tv_modes[i] == DRM_MODE_TV_MODE_PAL)
+			mode = drm_mode_analog_pal_576i(dev);
+		else
+			break;
+		if (!mode)
+			return i;
+		if (!i)
+			mode->type |= DRM_MODE_TYPE_PREFERRED;
+		drm_mode_probed_add(connector, mode);
+	}
+
+	return i;
+}
+EXPORT_SYMBOL(drm_connector_helper_tv_get_modes);