drm/exynos: Read hpd gpio in is_connected callback

This patch adds a gpio read of hpd during the is_connected callback. This fixes the case where hdmi is off going into suspend and the cable is plugged in while suspended. In this case, the hpd interrupt does not fire and is_connected will return false. Signed-off-by: Sean Paul <[email protected]> Signed-off-by: Rahul Sharma <[email protected]> Signed-off-by: Inki Dae <[email protected]>
Baughn · Jun 1, 2014 · 5137c8c · 5137c8c
1 parent 47d173f
commit 5137c8c
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -805,6 +805,8 @@ static enum drm_connector_status hdmi_detect(struct drm_connector *connector,
 {
 	struct hdmi_context *hdata = ctx_from_connector(connector);
 
+	hdata->hpd = gpio_get_value(hdata->hpd_gpio);
+
 	return hdata->hpd ? connector_status_connected :
 			connector_status_disconnected;
 }