From: Ainux ainux.wang@gmail.com

The existence of the connector cannot be detected, so add the detect function to support.

Signed-off-by: Ainux ainux.wang@gmail.com --- drivers/gpu/drm/ast/ast_drv.c | 2 ++ drivers/gpu/drm/ast/ast_mode.c | 19 ++++++++++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c index 5aa452b4efe6..6698bbc405e3 100644 --- a/drivers/gpu/drm/ast/ast_drv.c +++ b/drivers/gpu/drm/ast/ast_drv.c @@ -128,6 +128,8 @@ static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)

drm_fbdev_generic_setup(dev, 32);

+ drm_kms_helper_poll_init(dev); + return 0; }

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 36d9575aa27b..b4dd4c29b353 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -1293,6 +1293,21 @@ static enum drm_mode_status ast_mode_valid(struct drm_connector *connector, return flags; }

+static enum drm_connector_status ast_connector_detect(struct drm_connector + *connector, bool force) +{ + int r; + enum drm_connector_status ret = connector_status_connected; + + r = ast_get_modes(connector); + if (r) + ret = connector_status_connected; + else + ret = connector_status_disconnected; + + return ret; +} + static void ast_connector_destroy(struct drm_connector *connector) { struct ast_connector *ast_connector = to_ast_connector(connector); @@ -1307,6 +1322,7 @@ static const struct drm_connector_helper_funcs ast_connector_helper_funcs = {

static const struct drm_connector_funcs ast_connector_funcs = { .reset = drm_atomic_helper_connector_reset, + .detect = ast_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = ast_connector_destroy, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, @@ -1334,7 +1350,8 @@ static int ast_connector_init(struct drm_device *dev) connector->interlace_allowed = 0; connector->doublescan_allowed = 0;

- connector->polled = DRM_CONNECTOR_POLL_CONNECT; + connector->polled = DRM_CONNECTOR_POLL_CONNECT | + DRM_CONNECTOR_POLL_DISCONNECT;

drm_connector_attach_encoder(connector, encoder);