Merge tag 'drm-next-2023-08-30' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "The drm core grew a new generic gpu virtual address manager, and new
  execution locking helpers. These are used by nouveau now to provide
  uAPI support for the userspace Vulkan driver. AMD had a bunch of new
  IP core support, loads of refactoring around fbdev, but mostly just
  the usual amount of stuff across the board.

  core:
   - fix gfp flags in drmm_kmalloc

  gpuva:
   - add new generic GPU VA manager (for nouveau initially)

  syncobj:
   - add new DRM_IOCTL_SYNCOBJ_EVENTFD ioctl

  dma-buf:
   - acquire resv lock for mmap() in exporters
   - support dma-buf self import automatically
   - docs fixes

  backlight:
   - fix fbdev interactions

  atomic:
   - improve logging

  prime:
   - remove struct gem_prim_mmap plus driver updates

  gem:
   - drm_exec: add locking over multiple GEM objects
   - fix lockdep checking

  fbdev:
   - make fbdev userspace interfaces optional
   - use linux device instead of fbdev device
   - use deferred i/o helper macros in various drivers
   - Make FB core selectable without drivers
   - Remove obsolete flags FBINFO_DEFAULT and FBINFO_FLAG_DEFAULT
   - Add helper macros and Kconfig tokens for DMA-allocated framebuffer

  ttm:
   - support init_on_free
   - swapout fixes

  panel:
   - panel-edp: Support AUO B116XAB01.4
   - Support Visionox R66451 plus DT bindings
   - ld9040:
      - Backlight support
      - magic improved
      - Kconfig fix
   - Convert to of_device_get_match_data()
   - Fix Kconfig dependencies
   - simple:
      - Set bpc value to fix warning
      - Set connector type for AUO T215HVN01
      - Support Innolux G156HCE-L01 plus DT bindings
   - ili9881: Support TDO TL050HDV35 LCD panel plus DT bindings
   - startek: Support KD070FHFID015 MIPI-DSI panel plus DT bindings
   - sitronix-st7789v:
      - Support Inanbo T28CP45TN89 plus DT bindings
      - Support EDT ET028013DMA plus DT bindings
      - Various cleanups
   - edp: Add timings for N140HCA-EAC
   - Allow panels and touchscreens to power sequence together
   - Fix Innolux G156HCE-L01 LVDS clock

  bridge:
   - debugfs for chains support
   - dw-hdmi:
      - Improve support for YUV420 bus format
      - CEC suspend/resume
      - update EDID on HDMI detect
   - dw-mipi-dsi: Fix enable/disable of DSI controller
   - lt9611uxc: Use MODULE_FIRMWARE()
   - ps8640: Remove broken EDID code
   - samsung-dsim: Fix command transfer
   - tc358764:
      - Handle HS/VS polarity
      - Use BIT() macro
      - Various cleanups
   - adv7511: Fix low refresh rate
   - anx7625:
      - Switch to macros instead of hardcoded values
      - locking fixes
   - tc358767: fix hardware delays
   - sitronix-st7789v:
      - Support panel orientation
      - Support rotation property
      - Add support for Jasonic JT240MHQS-HWT-EK-E3 plus DT bindings

  amdgpu:
   - SDMA 6.1.0 support
   - HDP 6.1 support
   - SMUIO 14.0 support
   - PSP 14.0 support
   - IH 6.1 support
   - Lots of checkpatch cleanups
   - GFX 9.4.3 updates
   - Add USB PD and IFWI flashing documentation
   - GPUVM updates
   - RAS fixes
   - DRR fixes
   - FAMS fixes
   - Virtual display fixes
   - Soft IH fixes
   - SMU13 fixes
   - Rework PSP firmware loading for other IPs
   - Kernel doc fixes
   - DCN 3.0.1 fixes
   - LTTPR fixes
   - DP MST fixes
   - DCN 3.1.6 fixes
   - SMU 13.x fixes
   - PSP 13.x fixes
   - SubVP fixes
   - GC 9.4.3 fixes
   - Display bandwidth calculation fixes
   - VCN4 secure submission fixes
   - Allow building DC on RISC-V
   - Add visible FB info to bo_print_info
   - HBR3 fixes
   - GFX9 MCBP fix
   - GMC10 vmhub index fix
   - GMC11 vmhub index fix
   - Create a new doorbell manager
   - SR-IOV fixes
   - initial freesync panel replay support
   - revert zpos properly until igt regression is fixeed
   - use TTM to manage doorbell BAR
   - Expose both current and average power via hwmon if supported

  amdkfd:
   - Cleanup CRIU dma-buf handling
   - Use KIQ to unmap HIQ
   - GFX 9.4.3 debugger updates
   - GFX 9.4.2 debugger fixes
   - Enable cooperative groups fof gfx11
   - SVM fixes
   - Convert older APUs to use dGPU path like newer APUs
   - Drop IOMMUv2 path as it is no longer used
   - TBA fix for aldebaran

  i915:
   - ICL+ DSI modeset sequence
   - HDCP improvements
   - MTL display fixes and cleanups
   - HSW/BDW PSR1 restored
   - Init DDI ports in VBT order
   - General display refactors
   - Start using plane scale factor for relative data rate
   - Use shmem for dpt objects
   - Expose RPS thresholds in sysfs
   - Apply GuC SLPC min frequency softlimit correctly
   - Extend Wa_14015795083 to TGL, RKL, DG1 and ADL
   - Fix a VMA UAF for multi-gt platform
   - Do not use stolen on MTL due to HW bug
   - Check HuC and GuC version compatibility on MTL
   - avoid infinite GPU waits due to premature release of request memory
   - Fixes and updates for GSC memory allocation
   - Display SDVO fixes
   - Take stolen handling out of FBC code
   - Make i915_coherent_map_type GT-centric
   - Simplify shmem_create_from_object map_type

  msm:
   - SM6125 MDSS support
   - DPU: SM6125 DPU support
   - DSI: runtime PM support, burst mode support
   - DSI PHY: SM6125 support in 14nm DSI PHY driver
   - GPU: prepare for a7xx
   - fix a690 firmware
   - disable relocs on a6xx and newer

  radeon:
   - Lots of checkpatch cleanups

  ast:
   - improve device-model detection
   - Represent BMV as virtual connector
   - Report DP connection status

  nouveau:
   - add new exec/bind interface to support Vulkan
   - document some getparam ioctls
   - improve VRAM detection
   - various fixes/cleanups
   - workraound DPCD issues

  ivpu:
   - MMU updates
   - debugfs support
   - Support vpu4

  virtio:
   - add sync object support

  atmel-hlcdc:
   - Support inverted pixclock polarity

  etnaviv:
   - runtime PM cleanups
   - hang handling fixes

  exynos:
   - use fbdev DMA helpers
   - fix possible NULL ptr dereference

  komeda:
   - always attach encoder

  omapdrm:
   - use fbdev DMA helpers
ingenic:
   - kconfig regmap fixes

  loongson:
   - support display controller

  mediatek:
   - Small mtk-dpi cleanups
   - DisplayPort: support eDP and aux-bus
   - Fix coverity issues
   - Fix potential memory leak if vmap() fail

  mgag200:
   - minor fixes

  mxsfb:
   - support disabling overlay planes

  panfrost:
   - fix sync in IRQ handling

  ssd130x:
   - Support per-controller default resolution plus DT bindings
   - Reduce memory-allocation overhead
   - Improve intermediate buffer size computation
   - Fix allocation of temporary buffers
   - Fix pitch computation
   - Fix shadow plane allocation

  tegra:
   - use fbdev DMA helpers
   - Convert to devm_platform_ioremap_resource()
   - support bridge/connector
   - enable PM

  tidss:
   - Support TI AM625 plus DT bindings
   - Implement new connector model plus driver updates

  vkms:
   - improve write back support
   - docs fixes
   - support gamma LUT

  zynqmp-dpsub:
   - misc fixes"

* tag 'drm-next-2023-08-30' of git://anongit.freedesktop.org/drm/drm: (1327 commits)
  drm/gpuva_mgr: remove unused prev pointer in __drm_gpuva_sm_map()
  drm/tests/drm_kunit_helpers: Place correct function name in the comment header
  drm/nouveau: uapi: don't pass NO_PREFETCH flag implicitly
  drm/nouveau: uvmm: fix unset region pointer on remap
  drm/nouveau: sched: avoid job races between entities
  drm/i915: Fix HPD polling, reenabling the output poll work as needed
  drm: Add an HPD poll helper to reschedule the poll work
  drm/i915: Fix TLB-Invalidation seqno store
  drm/ttm/tests: Fix type conversion in ttm_pool_test
  drm/msm/a6xx: Bail out early if setting GPU OOB fails
  drm/msm/a6xx: Move LLC accessors to the common header
  drm/msm/a6xx: Introduce a6xx_llc_read
  drm/ttm/tests: Require MMU when testing
  drm/panel: simple: Fix Innolux G156HCE-L01 LVDS clock
  Revert "Revert "drm/amdgpu/display: change pipe policy for DCN 2.0""
  drm/amdgpu: Add memory vendor information
  drm/amd: flush any delayed gfxoff on suspend entry
  drm/amdgpu: skip fence GFX interrupts disable/enable for S0ix
  drm/amdgpu: Remove gfxoff check in GFX v9.4.3
  drm/amd/pm: Update pci link speed for smu v13.0.6
  ...

7 files changed, 158 insertions, 72 deletions

diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c
index dca077411f77..9d9dee7abaef 100644
--- a/drivers/gpu/drm/tidss/tidss_dispc.c
+++ b/drivers/gpu/drm/tidss/tidss_dispc.c
@@ -15,8 +15,6 @@
 #include <linux/module.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of.h>
-#include <linux/of_graph.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
@@ -275,6 +273,55 @@ const struct dispc_features dispc_j721e_feats = {
 	.vid_order = { 1, 3, 0, 2 },
 };
 
+const struct dispc_features dispc_am625_feats = {
+	.max_pclk_khz = {
+		[DISPC_VP_DPI] = 165000,
+		[DISPC_VP_INTERNAL] = 170000,
+	},
+
+	.scaling = {
+		.in_width_max_5tap_rgb = 1280,
+		.in_width_max_3tap_rgb = 2560,
+		.in_width_max_5tap_yuv = 2560,
+		.in_width_max_3tap_yuv = 4096,
+		.upscale_limit = 16,
+		.downscale_limit_5tap = 4,
+		.downscale_limit_3tap = 2,
+		/*
+		 * The max supported pixel inc value is 255. The value
+		 * of pixel inc is calculated like this: 1+(xinc-1)*bpp.
+		 * The maximum bpp of all formats supported by the HW
+		 * is 8. So the maximum supported xinc value is 32,
+		 * because 1+(32-1)*8 < 255 < 1+(33-1)*4.
+		 */
+		.xinc_max = 32,
+	},
+
+	.subrev = DISPC_AM625,
+
+	.common = "common",
+	.common_regs = tidss_am65x_common_regs,
+
+	.num_vps = 2,
+	.vp_name = { "vp1", "vp2" },
+	.ovr_name = { "ovr1", "ovr2" },
+	.vpclk_name =  { "vp1", "vp2" },
+	.vp_bus_type = { DISPC_VP_INTERNAL, DISPC_VP_DPI },
+
+	.vp_feat = { .color = {
+			.has_ctm = true,
+			.gamma_size = 256,
+			.gamma_type = TIDSS_GAMMA_8BIT,
+		},
+	},
+
+	.num_planes = 2,
+	/* note: vid is plane_id 0 and vidl1 is plane_id 1 */
+	.vid_name = { "vid", "vidl1" },
+	.vid_lite = { false, true, },
+	.vid_order = { 1, 0 },
+};
+
 static const u16 *dispc_common_regmap;
 
 struct dss_vp_data {
@@ -776,6 +823,7 @@ dispc_irq_t dispc_read_and_clear_irqstatus(struct dispc_device *dispc)
 	switch (dispc->feat->subrev) {
 	case DISPC_K2G:
 		return dispc_k2g_read_and_clear_irqstatus(dispc);
+	case DISPC_AM625:
 	case DISPC_AM65X:
 	case DISPC_J721E:
 		return dispc_k3_read_and_clear_irqstatus(dispc);
@@ -791,6 +839,7 @@ void dispc_set_irqenable(struct dispc_device *dispc, dispc_irq_t mask)
 	case DISPC_K2G:
 		dispc_k2g_set_irqenable(dispc, mask);
 		break;
+	case DISPC_AM625:
 	case DISPC_AM65X:
 	case DISPC_J721E:
 		dispc_k3_set_irqenable(dispc, mask);
@@ -1281,6 +1330,7 @@ void dispc_ovr_set_plane(struct dispc_device *dispc, u32 hw_plane,
 		dispc_k2g_ovr_set_plane(dispc, hw_plane, hw_videoport,
 					x, y, layer);
 		break;
+	case DISPC_AM625:
 	case DISPC_AM65X:
 		dispc_am65x_ovr_set_plane(dispc, hw_plane, hw_videoport,
 					  x, y, layer);
@@ -2199,6 +2249,7 @@ static void dispc_plane_init(struct dispc_device *dispc)
 	case DISPC_K2G:
 		dispc_k2g_plane_init(dispc);
 		break;
+	case DISPC_AM625:
 	case DISPC_AM65X:
 	case DISPC_J721E:
 		dispc_k3_plane_init(dispc);
@@ -2305,6 +2356,7 @@ static void dispc_vp_write_gamma_table(struct dispc_device *dispc,
 	case DISPC_K2G:
 		dispc_k2g_vp_write_gamma_table(dispc, hw_videoport);
 		break;
+	case DISPC_AM625:
 	case DISPC_AM65X:
 		dispc_am65x_vp_write_gamma_table(dispc, hw_videoport);
 		break;
@@ -2579,7 +2631,8 @@ int dispc_runtime_resume(struct dispc_device *dispc)
 		REG_GET(dispc, DSS_SYSSTATUS, 2, 2),
 		REG_GET(dispc, DSS_SYSSTATUS, 3, 3));
 
-	if (dispc->feat->subrev == DISPC_AM65X)
+	if (dispc->feat->subrev == DISPC_AM625 ||
+	    dispc->feat->subrev == DISPC_AM65X)
 		dev_dbg(dispc->dev, "OLDI RESETDONE %d,%d,%d\n",
 			REG_GET(dispc, DSS_SYSSTATUS, 5, 5),
 			REG_GET(dispc, DSS_SYSSTATUS, 6, 6),
diff --git a/drivers/gpu/drm/tidss/tidss_dispc.h b/drivers/gpu/drm/tidss/tidss_dispc.h
index 946ed769caaf..33ac5ad7a423 100644
--- a/drivers/gpu/drm/tidss/tidss_dispc.h
+++ b/drivers/gpu/drm/tidss/tidss_dispc.h
@@ -59,6 +59,7 @@ enum dispc_vp_bus_type {
 
 enum dispc_dss_subrevision {
 	DISPC_K2G,
+	DISPC_AM625,
 	DISPC_AM65X,
 	DISPC_J721E,
 };
@@ -86,6 +87,7 @@ struct dispc_features {
 };
 
 extern const struct dispc_features dispc_k2g_feats;
+extern const struct dispc_features dispc_am625_feats;
 extern const struct dispc_features dispc_am65x_feats;
 extern const struct dispc_features dispc_j721e_feats;
 
diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c
index 3f5f27fb6ebc..4d063eb9cd0b 100644
--- a/drivers/gpu/drm/tidss/tidss_drv.c
+++ b/drivers/gpu/drm/tidss/tidss_drv.c
@@ -5,7 +5,7 @@
  */
 
 #include <linux/console.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 
@@ -197,7 +197,7 @@ err_runtime_suspend:
 	return ret;
 }
 
-static int tidss_remove(struct platform_device *pdev)
+static void tidss_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct tidss_device *tidss = platform_get_drvdata(pdev);
@@ -221,8 +221,6 @@ static int tidss_remove(struct platform_device *pdev)
 	dispc_remove(tidss);
 
 	dev_dbg(dev, "%s done\n", __func__);
-
-	return 0;
 }
 
 static void tidss_shutdown(struct platform_device *pdev)
@@ -232,6 +230,7 @@ static void tidss_shutdown(struct platform_device *pdev)
 
 static const struct of_device_id tidss_of_table[] = {
 	{ .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, },
+	{ .compatible = "ti,am625-dss", .data = &dispc_am625_feats, },
 	{ .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, },
 	{ .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, },
 	{ }
@@ -241,7 +240,7 @@ MODULE_DEVICE_TABLE(of, tidss_of_table);
 
 static struct platform_driver tidss_platform_driver = {
 	.probe		= tidss_probe,
-	.remove		= tidss_remove,
+	.remove_new	= tidss_remove,
 	.shutdown	= tidss_shutdown,
 	.driver		= {
 		.name	= "tidss",
diff --git a/drivers/gpu/drm/tidss/tidss_encoder.c b/drivers/gpu/drm/tidss/tidss_encoder.c
index 0d4865e9c03d..17a86bed8054 100644
--- a/drivers/gpu/drm/tidss/tidss_encoder.c
+++ b/drivers/gpu/drm/tidss/tidss_encoder.c
@@ -6,91 +6,125 @@
 
 #include <linux/export.h>
 
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_bridge_connector.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_modeset_helper_vtables.h>
 #include <drm/drm_panel.h>
 #include <drm/drm_of.h>
+#include <drm/drm_simple_kms_helper.h>
 
 #include "tidss_crtc.h"
 #include "tidss_drv.h"
 #include "tidss_encoder.h"
 
-static int tidss_encoder_atomic_check(struct drm_encoder *encoder,
-				      struct drm_crtc_state *crtc_state,
-				      struct drm_connector_state *conn_state)
+struct tidss_encoder {
+	struct drm_bridge bridge;
+	struct drm_encoder encoder;
+	struct drm_connector *connector;
+	struct drm_bridge *next_bridge;
+	struct tidss_device *tidss;
+};
+
+static inline struct tidss_encoder
+*bridge_to_tidss_encoder(struct drm_bridge *b)
+{
+	return container_of(b, struct tidss_encoder, bridge);
+}
+
+static int tidss_bridge_attach(struct drm_bridge *bridge,
+			       enum drm_bridge_attach_flags flags)
+{
+	struct tidss_encoder *t_enc = bridge_to_tidss_encoder(bridge);
+
+	return drm_bridge_attach(bridge->encoder, t_enc->next_bridge,
+				 bridge, flags);
+}
+
+static int tidss_bridge_atomic_check(struct drm_bridge *bridge,
+				     struct drm_bridge_state *bridge_state,
+				     struct drm_crtc_state *crtc_state,
+				     struct drm_connector_state *conn_state)
 {
-	struct drm_device *ddev = encoder->dev;
+	struct tidss_encoder *t_enc = bridge_to_tidss_encoder(bridge);
+	struct tidss_device *tidss = t_enc->tidss;
 	struct tidss_crtc_state *tcrtc_state = to_tidss_crtc_state(crtc_state);
 	struct drm_display_info *di = &conn_state->connector->display_info;
-	struct drm_bridge *bridge;
-	bool bus_flags_set = false;
-
-	dev_dbg(ddev->dev, "%s\n", __func__);
-
-	/*
-	 * Take the bus_flags from the first bridge that defines
-	 * bridge timings, or from the connector's display_info if no
-	 * bridge defines the timings.
-	 */
-	drm_for_each_bridge_in_chain(encoder, bridge) {
-		if (!bridge->timings)
-			continue;
-
-		tcrtc_state->bus_flags = bridge->timings->input_bus_flags;
-		bus_flags_set = true;
-		break;
-	}
+	struct drm_bridge_state *next_bridge_state = NULL;
+
+	if (t_enc->next_bridge)
+		next_bridge_state = drm_atomic_get_new_bridge_state(crtc_state->state,
+								    t_enc->next_bridge);
 
-	if (!di->bus_formats || di->num_bus_formats == 0)  {
-		dev_err(ddev->dev, "%s: No bus_formats in connected display\n",
+	if (next_bridge_state) {
+		tcrtc_state->bus_flags = next_bridge_state->input_bus_cfg.flags;
+		tcrtc_state->bus_format = next_bridge_state->input_bus_cfg.format;
+	} else if (di->num_bus_formats) {
+		tcrtc_state->bus_format = di->bus_formats[0];
+		tcrtc_state->bus_flags = di->bus_flags;
+	} else {
+		dev_err(tidss->dev, "%s: No bus_formats in connected display\n",
 			__func__);
 		return -EINVAL;
 	}
 
-	// XXX any cleaner way to set bus format and flags?
-	tcrtc_state->bus_format = di->bus_formats[0];
-	if (!bus_flags_set)
-		tcrtc_state->bus_flags = di->bus_flags;
-
 	return 0;
 }
 
-static void tidss_encoder_destroy(struct drm_encoder *encoder)
-{
-	drm_encoder_cleanup(encoder);
-	kfree(encoder);
-}
-
-static const struct drm_encoder_helper_funcs encoder_helper_funcs = {
-	.atomic_check = tidss_encoder_atomic_check,
-};
-
-static const struct drm_encoder_funcs encoder_funcs = {
-	.destroy = tidss_encoder_destroy,
+static const struct drm_bridge_funcs tidss_bridge_funcs = {
+	.attach				= tidss_bridge_attach,
+	.atomic_check			= tidss_bridge_atomic_check,
+	.atomic_reset			= drm_atomic_helper_bridge_reset,
+	.atomic_duplicate_state		= drm_atomic_helper_bridge_duplicate_state,
+	.atomic_destroy_state		= drm_atomic_helper_bridge_destroy_state,
 };
 
-struct drm_encoder *tidss_encoder_create(struct tidss_device *tidss,
-					 u32 encoder_type, u32 possible_crtcs)
+int tidss_encoder_create(struct tidss_device *tidss,
+			 struct drm_bridge *next_bridge,
+			 u32 encoder_type, u32 possible_crtcs)
 {
+	struct tidss_encoder *t_enc;
 	struct drm_encoder *enc;
+	struct drm_connector *connector;
 	int ret;
 
-	enc = kzalloc(sizeof(*enc), GFP_KERNEL);
-	if (!enc)
-		return ERR_PTR(-ENOMEM);
+	t_enc = drmm_simple_encoder_alloc(&tidss->ddev, struct tidss_encoder,
+					  encoder, encoder_type);
+	if (IS_ERR(t_enc))
+		return PTR_ERR(t_enc);
+
+	t_enc->tidss = tidss;
+	t_enc->next_bridge = next_bridge;
+	t_enc->bridge.funcs = &tidss_bridge_funcs;
 
+	enc = &t_enc->encoder;
 	enc->possible_crtcs = possible_crtcs;
 
-	ret = drm_encoder_init(&tidss->ddev, enc, &encoder_funcs,
-			       encoder_type, NULL);
-	if (ret < 0) {
-		kfree(enc);
-		return ERR_PTR(ret);
+	/* Attaching first bridge to the encoder */
+	ret = drm_bridge_attach(enc, &t_enc->bridge, NULL,
+				DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+	if (ret) {
+		dev_err(tidss->dev, "bridge attach failed: %d\n", ret);
+		return ret;
+	}
+
+	/* Initializing the connector at the end of bridge-chain */
+	connector = drm_bridge_connector_init(&tidss->ddev, enc);
+	if (IS_ERR(connector)) {
+		dev_err(tidss->dev, "bridge_connector create failed\n");
+		return PTR_ERR(connector);
+	}
+
+	ret = drm_connector_attach_encoder(connector, enc);
+	if (ret) {
+		dev_err(tidss->dev, "attaching encoder to connector failed\n");
+		return ret;
 	}
 
-	drm_encoder_helper_add(enc, &encoder_helper_funcs);
+	t_enc->connector = connector;
 
 	dev_dbg(tidss->dev, "Encoder create done\n");
 
-	return enc;
+	return ret;
 }
diff --git a/drivers/gpu/drm/tidss/tidss_encoder.h b/drivers/gpu/drm/tidss/tidss_encoder.h
index ace877c0e0fd..3e561d6b1e83 100644
--- a/drivers/gpu/drm/tidss/tidss_encoder.h
+++ b/drivers/gpu/drm/tidss/tidss_encoder.h
@@ -11,7 +11,8 @@
 
 struct tidss_device;
 
-struct drm_encoder *tidss_encoder_create(struct tidss_device *tidss,
-					 u32 encoder_type, u32 possible_crtcs);
+int tidss_encoder_create(struct tidss_device *tidss,
+			 struct drm_bridge *next_bridge,
+			 u32 encoder_type, u32 possible_crtcs);
 
 #endif
diff --git a/drivers/gpu/drm/tidss/tidss_kms.c b/drivers/gpu/drm/tidss/tidss_kms.c
index ad2fa3c3d4a7..c979ad1af236 100644
--- a/drivers/gpu/drm/tidss/tidss_kms.c
+++ b/drivers/gpu/drm/tidss/tidss_kms.c
@@ -193,7 +193,6 @@ static int tidss_dispc_modeset_init(struct tidss_device *tidss)
 	for (i = 0; i < num_pipes; ++i) {
 		struct tidss_plane *tplane;
 		struct tidss_crtc *tcrtc;
-		struct drm_encoder *enc;
 		u32 hw_plane_id = feat->vid_order[tidss->num_planes];
 		int ret;
 
@@ -216,16 +215,13 @@ static int tidss_dispc_modeset_init(struct tidss_device *tidss)
 
 		tidss->crtcs[tidss->num_crtcs++] = &tcrtc->crtc;
 
-		enc = tidss_encoder_create(tidss, pipes[i].enc_type,
+		ret = tidss_encoder_create(tidss, pipes[i].bridge,
+					   pipes[i].enc_type,
 					   1 << tcrtc->crtc.index);
-		if (IS_ERR(enc)) {
+		if (ret) {
 			dev_err(tidss->dev, "encoder create failed\n");
-			return PTR_ERR(enc);
-		}
-
-		ret = drm_bridge_attach(enc, pipes[i].bridge, NULL, 0);
-		if (ret)
 			return ret;
+		}
 	}
 
 	/* create overlay planes of the leftover planes */
diff --git a/drivers/gpu/drm/tidss/tidss_plane.c b/drivers/gpu/drm/tidss/tidss_plane.c
index 6bdd6e4a955a..e1c0ef0c3894 100644
--- a/drivers/gpu/drm/tidss/tidss_plane.c
+++ b/drivers/gpu/drm/tidss/tidss_plane.c
@@ -38,7 +38,8 @@ static int tidss_plane_atomic_check(struct drm_plane *plane,
 	if (!new_plane_state->crtc) {
 		/*
 		 * The visible field is not reset by the DRM core but only
-		 * updated by drm_plane_helper_check_state(), set it manually.
+		 * updated by drm_atomic_helper_check_plane_state(), set it
+		 * manually.
 		 */
 		new_plane_state->visible = false;
 		return 0;