drm: bridge/dw_hdmi: add atomic API support

Fill atomic needed funcs with default atomic helper library.

Rockchip use dw_hdmi, and drm/rockchip will covert to atomic api,
we need dw_hdmi support atomic funcs.

Now another drm driver use dw_hdmi is imx, not yet atomic, so
check DRIVER_ATOMIC at runtime to spilt atomic and not atomic.

Signed-off-by: Mark Yao <mark.yao@rock-chips.com>

diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index 77cafa9aa41cfe03bf7d8fce49d6f10d8adeb7e1..6fbec99e59c2bd1667485417eae397fa0023764f 100644 (file)
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -22,6 +22,7 @@
 
 #include <drm/drm_of.h>
 #include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_encoder_slave.h>
@@ -1522,6 +1523,17 @@ static const struct drm_connector_funcs dw_hdmi_connector_funcs = {
        .force = dw_hdmi_connector_force,
 };
 
+static const struct drm_connector_funcs dw_hdmi_atomic_connector_funcs = {
+       .dpms = drm_atomic_helper_connector_dpms,
+       .fill_modes = drm_helper_probe_single_connector_modes,
+       .detect = dw_hdmi_connector_detect,
+       .destroy = dw_hdmi_connector_destroy,
+       .force = dw_hdmi_connector_force,
+       .reset = drm_atomic_helper_connector_reset,
+       .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+       .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
 static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = {
        .get_modes = dw_hdmi_connector_get_modes,
        .mode_valid = dw_hdmi_connector_mode_valid,
@@ -1645,8 +1657,15 @@ static int dw_hdmi_register(struct drm_device *drm, struct dw_hdmi *hdmi)
 
        drm_connector_helper_add(&hdmi->connector,
                                 &dw_hdmi_connector_helper_funcs);
-       drm_connector_init(drm, &hdmi->connector, &dw_hdmi_connector_funcs,
-                          DRM_MODE_CONNECTOR_HDMIA);
+
+       if (drm_core_check_feature(drm, DRIVER_ATOMIC))
+               drm_connector_init(drm, &hdmi->connector,
+                                  &dw_hdmi_atomic_connector_funcs,
+                                  DRM_MODE_CONNECTOR_HDMIA);
+       else
+               drm_connector_init(drm, &hdmi->connector,
+                                  &dw_hdmi_connector_funcs,
+                                  DRM_MODE_CONNECTOR_HDMIA);
 
        hdmi->connector.encoder = encoder;