drm/i2c: tda998x: Add support for atomic modesetting

When used with a DRIVER_ATOMIC enabled CRTC driver, the tda998x
will cause crashes due to missing atomic operations. Fill the
drm_connector_funcs struct with the atomic versions of the required
functions and add the atomic modeset specific callbacks.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 1ae779581630a10d7e9580916db6e4fe533f3dfd..0fddb0a2d5b3350c1021a0d18462025fe964aa2d 100644 (file)
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -22,6 +22,7 @@
 #include <sound/asoundef.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_of.h>
@@ -1396,10 +1397,13 @@ static void tda998x_connector_destroy(struct drm_connector *connector)
 }
 
 static const struct drm_connector_funcs tda998x_connector_funcs = {
-       .dpms = drm_helper_connector_dpms,
+       .dpms = drm_atomic_helper_connector_dpms,
+       .reset = drm_atomic_helper_connector_reset,
        .fill_modes = drm_helper_probe_single_connector_modes,
        .detect = tda998x_connector_detect,
        .destroy = tda998x_connector_destroy,
+       .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+       .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
 static int tda998x_bind(struct device *dev, struct device *master, void *data)