drm/tegra: Atomic conversion, phase 1

Implement initial atomic state handling. Hook up the CRTCs, planes' and
connectors' ->atomic_destroy_state() callback to ensure that the atomic
state objects don't leak.

Furthermore the CRTC now implements the ->mode_set_nofb() callback that
is used by new helpers to implement ->mode_set() and ->mode_set_base().
These new helpers also make use of the new plane helper functions which
the driver now provides.
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/gpu/drm/tegra/drm.c

@@ -121,8 +121,8 @@ static int tegra_drm_unload(struct drm_device *drm)
 
 	drm_kms_helper_poll_fini(drm);
 	tegra_drm_fb_exit(drm);
-	drm_vblank_cleanup(drm);
 	drm_mode_config_cleanup(drm);
+	drm_vblank_cleanup(drm);
 
 	err = host1x_device_exit(device);
 	if (err < 0)

drivers/gpu/drm/tegra/dsi.c

@@ -17,6 +17,7 @@
 
 #include <linux/regulator/consumer.h>
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_panel.h>
 
@@ -736,6 +737,7 @@ static const struct drm_connector_funcs tegra_dsi_connector_funcs = {
 	.detect = tegra_output_connector_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = tegra_output_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
 static enum drm_mode_status

drivers/gpu/drm/tegra/hdmi.c

@@ -14,6 +14,7 @@
 #include <linux/regulator/consumer.h>
 #include <linux/reset.h>
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 
@@ -781,6 +782,7 @@ static const struct drm_connector_funcs tegra_hdmi_connector_funcs = {
 	.detect = tegra_output_connector_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = tegra_output_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
 static enum drm_mode_status

drivers/gpu/drm/tegra/output.c

@@ -9,6 +9,7 @@
 
 #include <linux/of_gpio.h>
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_panel.h>
 #include "drm.h"
 

drivers/gpu/drm/tegra/rgb.c

@@ -9,6 +9,7 @@
 
 #include <linux/clk.h>
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_panel.h>
 
 #include "drm.h"
@@ -97,6 +98,7 @@ static const struct drm_connector_funcs tegra_rgb_connector_funcs = {
 	.detect = tegra_output_connector_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = tegra_output_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
 static enum drm_mode_status

drivers/gpu/drm/tegra/sor.c

@@ -15,6 +15,7 @@
 
 #include <soc/tegra/pmc.h>
 
+#include <drm/drm_atomic_helper.h>
 #include <drm/drm_dp_helper.h>
 #include <drm/drm_panel.h>
 
@@ -737,6 +738,7 @@ static const struct drm_connector_funcs tegra_sor_connector_funcs = {
 	.detect = tegra_sor_connector_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = tegra_output_connector_destroy,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
 static int tegra_sor_connector_get_modes(struct drm_connector *connector)