drm/mgag200: Set .detect_ctx() and enable connector polling

Set .detect_ctx() in struct drm_connector_helper_funcs to the
common helper drm_connector_helper_detect_from_ddc() and enable
polling for the connector. Mgag200 will now test for the monitor's
presence by probing the DDC in regular intervals.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240610141141.29527-4-tzimmermann@suse.de

drivers/gpu/drm/mgag200/mgag200_g200.c

@@ -401,6 +401,7 @@ struct mga_device *mgag200_g200_device_create(struct pci_dev *pdev, const struct
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_g200eh.c

@@ -277,6 +277,7 @@ struct mga_device *mgag200_g200eh_device_create(struct pci_dev *pdev, const stru
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_g200eh3.c

@@ -182,6 +182,7 @@ struct mga_device *mgag200_g200eh3_device_create(struct pci_dev *pdev,
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_g200er.c

@@ -316,6 +316,7 @@ struct mga_device *mgag200_g200er_device_create(struct pci_dev *pdev, const stru
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_g200ev.c

@@ -321,6 +321,7 @@ struct mga_device *mgag200_g200ev_device_create(struct pci_dev *pdev, const stru
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_g200ew3.c

@@ -202,6 +202,7 @@ struct mga_device *mgag200_g200ew3_device_create(struct pci_dev *pdev,
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_g200se.c

@@ -521,6 +521,7 @@ struct mga_device *mgag200_g200se_device_create(struct pci_dev *pdev, const stru
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_g200wb.c

@@ -326,6 +326,7 @@ struct mga_device *mgag200_g200wb_device_create(struct pci_dev *pdev, const stru
 		return ERR_PTR(ret);
 
 	drm_mode_config_reset(dev);
+	drm_kms_helper_poll_init(dev);
 
 	return mdev;
 }

drivers/gpu/drm/mgag200/mgag200_vga.c

@@ -12,7 +12,8 @@ static const struct drm_encoder_funcs mgag200_dac_encoder_funcs = {
 };
 
 static const struct drm_connector_helper_funcs mgag200_vga_connector_helper_funcs = {
-	.get_modes = drm_connector_helper_get_modes
+	.get_modes = drm_connector_helper_get_modes,
+	.detect_ctx = drm_connector_helper_detect_from_ddc
 };
 
 static const struct drm_connector_funcs mgag200_vga_connector_funcs = {
@@ -58,6 +59,9 @@ int mgag200_vga_output_init(struct mga_device *mdev)
 	}
 	drm_connector_helper_add(connector, &mgag200_vga_connector_helper_funcs);
 
+	connector->polled = DRM_CONNECTOR_POLL_CONNECT |
+			    DRM_CONNECTOR_POLL_DISCONNECT;
+
 	ret = drm_connector_attach_encoder(connector, encoder);
 	if (ret) {
 		drm_err(dev, "drm_connector_attach_encoder() failed: %d\n", ret);