Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/dumb-vga-dac.c
index 9b70678..7aa789c 100644
--- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
+++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (C) 2015-2016 Free Electrons
  * Copyright (C) 2015-2016 NextThing Co
  *
  * Maxime Ripard <maxime.ripard@free-electrons.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
  */
 
 #include <linux/module.h>
@@ -15,10 +11,10 @@
 #include <linux/of_graph.h>
 #include <linux/regulator/consumer.h>
 
-#include <drm/drmP.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
-#include <drm/drm_crtc_helper.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
 
 struct dumb_vga {
 	struct drm_bridge	bridge;
@@ -46,7 +42,7 @@
 	struct edid *edid;
 	int ret;
 
-	if (IS_ERR(vga->ddc))
+	if (!vga->ddc)
 		goto fallback;
 
 	edid = drm_get_edid(connector, vga->ddc);
@@ -88,7 +84,7 @@
 	 * wire the DDC pins, or the I2C bus might not be working at
 	 * all.
 	 */
-	if (!IS_ERR(vga->ddc) && drm_probe_ddc(vga->ddc))
+	if (vga->ddc && drm_probe_ddc(vga->ddc))
 		return connector_status_connected;
 
 	return connector_status_unknown;
@@ -115,8 +111,10 @@
 
 	drm_connector_helper_add(&vga->connector,
 				 &dumb_vga_con_helper_funcs);
-	ret = drm_connector_init(bridge->dev, &vga->connector,
-				 &dumb_vga_con_funcs, DRM_MODE_CONNECTOR_VGA);
+	ret = drm_connector_init_with_ddc(bridge->dev, &vga->connector,
+					  &dumb_vga_con_funcs,
+					  DRM_MODE_CONNECTOR_VGA,
+					  vga->ddc);
 	if (ret) {
 		DRM_ERROR("Failed to initialize connector\n");
 		return ret;
@@ -199,6 +197,7 @@
 		if (PTR_ERR(vga->ddc) == -ENODEV) {
 			dev_dbg(&pdev->dev,
 				"No i2c bus specified. Disabling EDID readout\n");
+			vga->ddc = NULL;
 		} else {
 			dev_err(&pdev->dev, "Couldn't retrieve i2c bus\n");
 			return PTR_ERR(vga->ddc);
@@ -220,7 +219,7 @@
 
 	drm_bridge_remove(&vga->bridge);
 
-	if (!IS_ERR(vga->ddc))
+	if (vga->ddc)
 		i2c_put_adapter(vga->ddc);
 
 	return 0;
@@ -234,7 +233,7 @@
  */
 static const struct drm_bridge_timings default_dac_timings = {
 	/* Timing specifications, datasheet page 7 */
-	.sampling_edge = DRM_BUS_FLAG_PIXDATA_POSEDGE,
+	.input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,
 	.setup_time_ps = 500,
 	.hold_time_ps = 1500,
 };
@@ -245,7 +244,7 @@
  */
 static const struct drm_bridge_timings ti_ths8134_dac_timings = {
 	/* From timing diagram, datasheet page 9 */
-	.sampling_edge = DRM_BUS_FLAG_PIXDATA_POSEDGE,
+	.input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,
 	/* From datasheet, page 12 */
 	.setup_time_ps = 3000,
 	/* I guess this means latched input */
@@ -258,7 +257,7 @@
  */
 static const struct drm_bridge_timings ti_ths8135_dac_timings = {
 	/* From timing diagram, datasheet page 14 */
-	.sampling_edge = DRM_BUS_FLAG_PIXDATA_POSEDGE,
+	.input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE,
 	/* From datasheet, page 16 */
 	.setup_time_ps = 2000,
 	.hold_time_ps = 500,