1 files changed, 118 insertions, 528 deletions

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index bbb365f2d087..3b87eebddc97 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -9,29 +9,19 @@
  * - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  */
 
-#include <drm/drm_atomic.h>
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_atomic_uapi.h>
-#include <drm/drm_blend.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_device.h>
 #include <drm/drm_fb_dma_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_framebuffer.h>
-#include <drm/drm_managed.h>
 #include <drm/drm_plane.h>
-#include <drm/drm_vblank.h>
 
 #include <linux/clk.h>
-#include <linux/delay.h>
 #include <linux/dma/xilinx_dpdma.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/spinlock.h>
+#include <linux/slab.h>
 
 #include "zynqmp_disp.h"
 #include "zynqmp_disp_regs.h"
@@ -72,46 +62,23 @@
 #define ZYNQMP_DISP_AV_BUF_NUM_VID_GFX_BUFFERS		4
 #define ZYNQMP_DISP_AV_BUF_NUM_BUFFERS			6
 
-#define ZYNQMP_DISP_NUM_LAYERS				2
 #define ZYNQMP_DISP_MAX_NUM_SUB_PLANES			3
 
 /**
  * struct zynqmp_disp_format - Display subsystem format information
  * @drm_fmt: DRM format (4CC)
  * @buf_fmt: AV buffer format
- * @bus_fmt: Media bus formats (live formats)
  * @swap: Flag to swap R & B for RGB formats, and U & V for YUV formats
  * @sf: Scaling factors for color components
  */
 struct zynqmp_disp_format {
 	u32 drm_fmt;
 	u32 buf_fmt;
-	u32 bus_fmt;
 	bool swap;
 	const u32 *sf;
 };
 
 /**
- * enum zynqmp_disp_layer_id - Layer identifier
- * @ZYNQMP_DISP_LAYER_VID: Video layer
- * @ZYNQMP_DISP_LAYER_GFX: Graphics layer
- */
-enum zynqmp_disp_layer_id {
-	ZYNQMP_DISP_LAYER_VID,
-	ZYNQMP_DISP_LAYER_GFX
-};
-
-/**
- * enum zynqmp_disp_layer_mode - Layer mode
- * @ZYNQMP_DISP_LAYER_NONLIVE: non-live (memory) mode
- * @ZYNQMP_DISP_LAYER_LIVE: live (stream) mode
- */
-enum zynqmp_disp_layer_mode {
-	ZYNQMP_DISP_LAYER_NONLIVE,
-	ZYNQMP_DISP_LAYER_LIVE
-};
-
-/**
  * struct zynqmp_disp_layer_dma - DMA channel for one data plane of a layer
  * @chan: DMA channel
  * @xt: Interleaved DMA descriptor template
@@ -136,8 +103,7 @@ struct zynqmp_disp_layer_info {
 };
 
 /**
- * struct zynqmp_disp_layer - Display layer (DRM plane)
- * @plane: DRM plane
+ * struct zynqmp_disp_layer - Display layer
  * @id: Layer ID
  * @disp: Back pointer to struct zynqmp_disp
  * @info: Static layer information
@@ -147,8 +113,7 @@ struct zynqmp_disp_layer_info {
  * @mode: Current operation mode
  */
 struct zynqmp_disp_layer {
-	struct drm_plane plane;
-	enum zynqmp_disp_layer_id id;
+	enum zynqmp_dpsub_layer_id id;
 	struct zynqmp_disp *disp;
 	const struct zynqmp_disp_layer_info *info;
 
@@ -156,32 +121,22 @@ struct zynqmp_disp_layer {
 
 	const struct zynqmp_disp_format *disp_fmt;
 	const struct drm_format_info *drm_fmt;
-	enum zynqmp_disp_layer_mode mode;
+	enum zynqmp_dpsub_layer_mode mode;
 };
 
 /**
  * struct zynqmp_disp - Display controller
  * @dev: Device structure
- * @drm: DRM core
  * @dpsub: Display subsystem
- * @crtc: DRM CRTC
  * @blend.base: Register I/O base address for the blender
  * @avbuf.base: Register I/O base address for the audio/video buffer manager
  * @audio.base: Registers I/O base address for the audio mixer
- * @audio.clk: Audio clock
- * @audio.clk_from_ps: True of the audio clock comes from PS, false from PL
  * @layers: Layers (planes)
- * @event: Pending vblank event request
- * @pclk: Pixel clock
- * @pclk_from_ps: True of the video clock comes from PS, false from PL
  */
 struct zynqmp_disp {
 	struct device *dev;
-	struct drm_device *drm;
 	struct zynqmp_dpsub *dpsub;
 
-	struct drm_crtc crtc;
-
 	struct {
 		void __iomem *base;
 	} blend;
@@ -190,16 +145,9 @@ struct zynqmp_disp {
 	} avbuf;
 	struct {
 		void __iomem *base;
-		struct clk *clk;
-		bool clk_from_ps;
 	} audio;
 
-	struct zynqmp_disp_layer layers[ZYNQMP_DISP_NUM_LAYERS];
-
-	struct drm_pending_vblank_event *event;
-
-	struct clk *pclk;
-	bool pclk_from_ps;
+	struct zynqmp_disp_layer layers[ZYNQMP_DPSUB_NUM_LAYERS];
 };
 
 /* -----------------------------------------------------------------------------
@@ -416,14 +364,9 @@ static void zynqmp_disp_avbuf_write(struct zynqmp_disp *disp, int reg, u32 val)
 	writel(val, disp->avbuf.base + reg);
 }
 
-static bool zynqmp_disp_layer_is_gfx(const struct zynqmp_disp_layer *layer)
-{
-	return layer->id == ZYNQMP_DISP_LAYER_GFX;
-}
-
 static bool zynqmp_disp_layer_is_video(const struct zynqmp_disp_layer *layer)
 {
-	return layer->id == ZYNQMP_DISP_LAYER_VID;
+	return layer->id == ZYNQMP_DPSUB_LAYER_VID;
 }
 
 /**
@@ -566,27 +509,25 @@ static void zynqmp_disp_avbuf_disable_audio(struct zynqmp_disp *disp)
  * zynqmp_disp_avbuf_enable_video - Enable a video layer
  * @disp: Display controller
  * @layer: The layer
- * @mode: Operating mode of layer
  *
  * Enable the video/graphics buffer for @layer.
  */
 static void zynqmp_disp_avbuf_enable_video(struct zynqmp_disp *disp,
-					   struct zynqmp_disp_layer *layer,
-					   enum zynqmp_disp_layer_mode mode)
+					   struct zynqmp_disp_layer *layer)
 {
 	u32 val;
 
 	val = zynqmp_disp_avbuf_read(disp, ZYNQMP_DISP_AV_BUF_OUTPUT);
 	if (zynqmp_disp_layer_is_video(layer)) {
 		val &= ~ZYNQMP_DISP_AV_BUF_OUTPUT_VID1_MASK;
-		if (mode == ZYNQMP_DISP_LAYER_NONLIVE)
+		if (layer->mode == ZYNQMP_DPSUB_LAYER_NONLIVE)
 			val |= ZYNQMP_DISP_AV_BUF_OUTPUT_VID1_MEM;
 		else
 			val |= ZYNQMP_DISP_AV_BUF_OUTPUT_VID1_LIVE;
 	} else {
 		val &= ~ZYNQMP_DISP_AV_BUF_OUTPUT_VID2_MASK;
 		val |= ZYNQMP_DISP_AV_BUF_OUTPUT_VID2_MEM;
-		if (mode == ZYNQMP_DISP_LAYER_NONLIVE)
+		if (layer->mode == ZYNQMP_DPSUB_LAYER_NONLIVE)
 			val |= ZYNQMP_DISP_AV_BUF_OUTPUT_VID2_MEM;
 		else
 			val |= ZYNQMP_DISP_AV_BUF_OUTPUT_VID2_LIVE;
@@ -758,8 +699,8 @@ static void zynqmp_disp_blend_set_bg_color(struct zynqmp_disp *disp,
  * @enable: True to enable global alpha blending
  * @alpha: Global alpha value (ignored if @enabled is false)
  */
-static void zynqmp_disp_blend_set_global_alpha(struct zynqmp_disp *disp,
-					       bool enable, u32 alpha)
+void zynqmp_disp_blend_set_global_alpha(struct zynqmp_disp *disp,
+					bool enable, u32 alpha)
 {
 	zynqmp_disp_blend_write(disp, ZYNQMP_DISP_V_BLEND_SET_GLOBAL_ALPHA,
 				ZYNQMP_DISP_V_BLEND_SET_GLOBAL_ALPHA_VALUE(alpha) |
@@ -902,80 +843,6 @@ static void zynqmp_disp_audio_disable(struct zynqmp_disp *disp)
 				ZYNQMP_DISP_AUD_SOFT_RESET_AUD_SRST);
 }
 
-static void zynqmp_disp_audio_init(struct zynqmp_disp *disp)
-{
-	/* Try the live PL audio clock. */
-	disp->audio.clk = devm_clk_get(disp->dev, "dp_live_audio_aclk");
-	if (!IS_ERR(disp->audio.clk)) {
-		disp->audio.clk_from_ps = false;
-		return;
-	}
-
-	/* If the live PL audio clock is not valid, fall back to PS clock. */
-	disp->audio.clk = devm_clk_get(disp->dev, "dp_aud_clk");
-	if (!IS_ERR(disp->audio.clk)) {
-		disp->audio.clk_from_ps = true;
-		return;
-	}
-
-	dev_err(disp->dev, "audio disabled due to missing clock\n");
-}
-
-/* -----------------------------------------------------------------------------
- * ZynqMP Display external functions for zynqmp_dp
- */
-
-/**
- * zynqmp_disp_handle_vblank - Handle the vblank event
- * @disp: Display controller
- *
- * This function handles the vblank interrupt, and sends an event to
- * CRTC object. This will be called by the DP vblank interrupt handler.
- */
-void zynqmp_disp_handle_vblank(struct zynqmp_disp *disp)
-{
-	struct drm_crtc *crtc = &disp->crtc;
-
-	drm_crtc_handle_vblank(crtc);
-}
-
-/**
- * zynqmp_disp_audio_enabled - If the audio is enabled
- * @disp: Display controller
- *
- * Return if the audio is enabled depending on the audio clock.
- *
- * Return: true if audio is enabled, or false.
- */
-bool zynqmp_disp_audio_enabled(struct zynqmp_disp *disp)
-{
-	return !!disp->audio.clk;
-}
-
-/**
- * zynqmp_disp_get_audio_clk_rate - Get the current audio clock rate
- * @disp: Display controller
- *
- * Return: the current audio clock rate.
- */
-unsigned int zynqmp_disp_get_audio_clk_rate(struct zynqmp_disp *disp)
-{
-	if (zynqmp_disp_audio_enabled(disp))
-		return 0;
-	return clk_get_rate(disp->audio.clk);
-}
-
-/**
- * zynqmp_disp_get_crtc_mask - Return the CRTC bit mask
- * @disp: Display controller
- *
- * Return: the crtc mask of the zyqnmp_disp CRTC.
- */
-uint32_t zynqmp_disp_get_crtc_mask(struct zynqmp_disp *disp)
-{
-	return drm_crtc_mask(&disp->crtc);
-}
-
 /* -----------------------------------------------------------------------------
  * ZynqMP Display Layer & DRM Plane
  */
@@ -1006,19 +873,46 @@ zynqmp_disp_layer_find_format(struct zynqmp_disp_layer *layer,
 }
 
 /**
+ * zynqmp_disp_layer_drm_formats - Return the DRM formats supported by the layer
+ * @layer: The layer
+ * @num_formats: Pointer to the returned number of formats
+ *
+ * Return: A newly allocated u32 array that stores all the DRM formats
+ * supported by the layer. The number of formats in the array is returned
+ * through the num_formats argument.
+ */
+u32 *zynqmp_disp_layer_drm_formats(struct zynqmp_disp_layer *layer,
+				   unsigned int *num_formats)
+{
+	unsigned int i;
+	u32 *formats;
+
+	formats = kcalloc(layer->info->num_formats, sizeof(*formats),
+			  GFP_KERNEL);
+	if (!formats)
+		return NULL;
+
+	for (i = 0; i < layer->info->num_formats; ++i)
+		formats[i] = layer->info->formats[i].drm_fmt;
+
+	*num_formats = layer->info->num_formats;
+	return formats;
+}
+
+/**
  * zynqmp_disp_layer_enable - Enable a layer
  * @layer: The layer
+ * @mode: Operating mode of layer
  *
  * Enable the @layer in the audio/video buffer manager and the blender. DMA
  * channels are started separately by zynqmp_disp_layer_update().
  */
-static void zynqmp_disp_layer_enable(struct zynqmp_disp_layer *layer)
+void zynqmp_disp_layer_enable(struct zynqmp_disp_layer *layer,
+			      enum zynqmp_dpsub_layer_mode mode)
 {
-	zynqmp_disp_avbuf_enable_video(layer->disp, layer,
-				       ZYNQMP_DISP_LAYER_NONLIVE);
+	layer->mode = mode;
+	zynqmp_disp_avbuf_enable_video(layer->disp, layer);
 	zynqmp_disp_blend_layer_enable(layer->disp, layer);
-
-	layer->mode = ZYNQMP_DISP_LAYER_NONLIVE;
 }
 
 /**
@@ -1028,12 +922,14 @@ static void zynqmp_disp_layer_enable(struct zynqmp_disp_layer *layer)
  * Disable the layer by stopping its DMA channels and disabling it in the
  * audio/video buffer manager and the blender.
  */
-static void zynqmp_disp_layer_disable(struct zynqmp_disp_layer *layer)
+void zynqmp_disp_layer_disable(struct zynqmp_disp_layer *layer)
 {
 	unsigned int i;
 
-	for (i = 0; i < layer->drm_fmt->num_planes; i++)
-		dmaengine_terminate_sync(layer->dmas[i].chan);
+	if (layer->disp->dpsub->dma_enabled) {
+		for (i = 0; i < layer->drm_fmt->num_planes; i++)
+			dmaengine_terminate_sync(layer->dmas[i].chan);
+	}
 
 	zynqmp_disp_avbuf_disable_video(layer->disp, layer);
 	zynqmp_disp_blend_layer_disable(layer->disp, layer);
@@ -1042,15 +938,13 @@ static void zynqmp_disp_layer_disable(struct zynqmp_disp_layer *layer)
 /**
  * zynqmp_disp_layer_set_format - Set the layer format
  * @layer: The layer
- * @state: The plane state
+ * @info: The format info
  *
- * Set the format for @layer based on @state->fb->format. The layer must be
- * disabled.
+ * Set the format for @layer to @info. The layer must be disabled.
  */
-static void zynqmp_disp_layer_set_format(struct zynqmp_disp_layer *layer,
-					 struct drm_plane_state *state)
+void zynqmp_disp_layer_set_format(struct zynqmp_disp_layer *layer,
+				  const struct drm_format_info *info)
 {
-	const struct drm_format_info *info = state->fb->format;
 	unsigned int i;
 
 	layer->disp_fmt = zynqmp_disp_layer_find_format(layer, info->format);
@@ -1058,6 +952,9 @@ static void zynqmp_disp_layer_set_format(struct zynqmp_disp_layer *layer,
 
 	zynqmp_disp_avbuf_set_format(layer->disp, layer, layer->disp_fmt);
 
+	if (!layer->disp->dpsub->dma_enabled)
+		return;
+
 	/*
 	 * Set pconfig for each DMA channel to indicate they're part of a
 	 * video group.
@@ -1087,13 +984,16 @@ static void zynqmp_disp_layer_set_format(struct zynqmp_disp_layer *layer,
  *
  * Return: 0 on success, or the DMA descriptor failure error otherwise
  */
-static int zynqmp_disp_layer_update(struct zynqmp_disp_layer *layer,
-				    struct drm_plane_state *state)
+int zynqmp_disp_layer_update(struct zynqmp_disp_layer *layer,
+			     struct drm_plane_state *state)
 {
 	const struct drm_format_info *info = layer->drm_fmt;
 	unsigned int i;
 
-	for (i = 0; i < layer->drm_fmt->num_planes; i++) {
+	if (!layer->disp->dpsub->dma_enabled)
+		return 0;
+
+	for (i = 0; i < info->num_planes; i++) {
 		unsigned int width = state->crtc_w / (i ? info->hsub : 1);
 		unsigned int height = state->crtc_h / (i ? info->vsub : 1);
 		struct zynqmp_disp_layer_dma *dma = &layer->dmas[i];
@@ -1128,143 +1028,6 @@ static int zynqmp_disp_layer_update(struct zynqmp_disp_layer *layer,
 	return 0;
 }
 
-static inline struct zynqmp_disp_layer *plane_to_layer(struct drm_plane *plane)
-{
-	return container_of(plane, struct zynqmp_disp_layer, plane);
-}
-
-static int
-zynqmp_disp_plane_atomic_check(struct drm_plane *plane,
-			       struct drm_atomic_state *state)
-{
-	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
-										 plane);
-	struct drm_crtc_state *crtc_state;
-
-	if (!new_plane_state->crtc)
-		return 0;
-
-	crtc_state = drm_atomic_get_crtc_state(state, new_plane_state->crtc);
-	if (IS_ERR(crtc_state))
-		return PTR_ERR(crtc_state);
-
-	return drm_atomic_helper_check_plane_state(new_plane_state,
-						   crtc_state,
-						   DRM_PLANE_NO_SCALING,
-						   DRM_PLANE_NO_SCALING,
-						   false, false);
-}
-
-static void
-zynqmp_disp_plane_atomic_disable(struct drm_plane *plane,
-				 struct drm_atomic_state *state)
-{
-	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
-									   plane);
-	struct zynqmp_disp_layer *layer = plane_to_layer(plane);
-
-	if (!old_state->fb)
-		return;
-
-	zynqmp_disp_layer_disable(layer);
-
-	if (zynqmp_disp_layer_is_gfx(layer))
-		zynqmp_disp_blend_set_global_alpha(layer->disp, false,
-						   plane->state->alpha >> 8);
-}
-
-static void
-zynqmp_disp_plane_atomic_update(struct drm_plane *plane,
-				struct drm_atomic_state *state)
-{
-	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
-	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
-	struct zynqmp_disp_layer *layer = plane_to_layer(plane);
-	bool format_changed = false;
-
-	if (!old_state->fb ||
-	    old_state->fb->format->format != new_state->fb->format->format)
-		format_changed = true;
-
-	/*
-	 * If the format has changed (including going from a previously
-	 * disabled state to any format), reconfigure the format. Disable the
-	 * plane first if needed.
-	 */
-	if (format_changed) {
-		if (old_state->fb)
-			zynqmp_disp_layer_disable(layer);
-
-		zynqmp_disp_layer_set_format(layer, new_state);
-	}
-
-	zynqmp_disp_layer_update(layer, new_state);
-
-	if (zynqmp_disp_layer_is_gfx(layer))
-		zynqmp_disp_blend_set_global_alpha(layer->disp, true,
-						   plane->state->alpha >> 8);
-
-	/* Enable or re-enable the plane is the format has changed. */
-	if (format_changed)
-		zynqmp_disp_layer_enable(layer);
-}
-
-static const struct drm_plane_helper_funcs zynqmp_disp_plane_helper_funcs = {
-	.atomic_check		= zynqmp_disp_plane_atomic_check,
-	.atomic_update		= zynqmp_disp_plane_atomic_update,
-	.atomic_disable		= zynqmp_disp_plane_atomic_disable,
-};
-
-static const struct drm_plane_funcs zynqmp_disp_plane_funcs = {
-	.update_plane		= drm_atomic_helper_update_plane,
-	.disable_plane		= drm_atomic_helper_disable_plane,
-	.destroy		= drm_plane_cleanup,
-	.reset			= drm_atomic_helper_plane_reset,
-	.atomic_duplicate_state	= drm_atomic_helper_plane_duplicate_state,
-	.atomic_destroy_state	= drm_atomic_helper_plane_destroy_state,
-};
-
-static int zynqmp_disp_create_planes(struct zynqmp_disp *disp)
-{
-	unsigned int i, j;
-	int ret;
-
-	for (i = 0; i < ZYNQMP_DISP_NUM_LAYERS; i++) {
-		struct zynqmp_disp_layer *layer = &disp->layers[i];
-		enum drm_plane_type type;
-		u32 *drm_formats;
-
-		drm_formats = drmm_kcalloc(disp->drm, sizeof(*drm_formats),
-					   layer->info->num_formats,
-					   GFP_KERNEL);
-		if (!drm_formats)
-			return -ENOMEM;
-
-		for (j = 0; j < layer->info->num_formats; ++j)
-			drm_formats[j] = layer->info->formats[j].drm_fmt;
-
-		/* Graphics layer is primary, and video layer is overlay. */
-		type = zynqmp_disp_layer_is_video(layer)
-		     ? DRM_PLANE_TYPE_OVERLAY : DRM_PLANE_TYPE_PRIMARY;
-		ret = drm_universal_plane_init(disp->drm, &layer->plane, 0,
-					       &zynqmp_disp_plane_funcs,
-					       drm_formats,
-					       layer->info->num_formats,
-					       NULL, type, NULL);
-		if (ret)
-			return ret;
-
-		drm_plane_helper_add(&layer->plane,
-				     &zynqmp_disp_plane_helper_funcs);
-
-		drm_plane_create_zpos_immutable_property(&layer->plane, i);
-		if (zynqmp_disp_layer_is_gfx(layer))
-			drm_plane_create_alpha_property(&layer->plane);
-	}
-
-	return 0;
-}
-
 /**
  * zynqmp_disp_layer_release_dma - Release DMA channels for a layer
  * @disp: Display controller
@@ -1277,7 +1040,7 @@ static void zynqmp_disp_layer_release_dma(struct zynqmp_disp *disp,
 {
 	unsigned int i;
 
-	if (!layer->info)
+	if (!layer->info || !disp->dpsub->dma_enabled)
 		return;
 
 	for (i = 0; i < layer->info->num_channels; i++) {
@@ -1300,7 +1063,7 @@ static void zynqmp_disp_destroy_layers(struct zynqmp_disp *disp)
 {
 	unsigned int i;
 
-	for (i = 0; i < ZYNQMP_DISP_NUM_LAYERS; i++)
+	for (i = 0; i < ARRAY_SIZE(disp->layers); i++)
 		zynqmp_disp_layer_release_dma(disp, &disp->layers[i]);
 }
 
@@ -1320,6 +1083,9 @@ static int zynqmp_disp_layer_request_dma(struct zynqmp_disp *disp,
 	unsigned int i;
 	int ret;
 
+	if (!disp->dpsub->dma_enabled)
+		return 0;
+
 	for (i = 0; i < layer->info->num_channels; i++) {
 		struct zynqmp_disp_layer_dma *dma = &layer->dmas[i];
 		char dma_channel_name[16];
@@ -1347,12 +1113,12 @@ static int zynqmp_disp_layer_request_dma(struct zynqmp_disp *disp,
 static int zynqmp_disp_create_layers(struct zynqmp_disp *disp)
 {
 	static const struct zynqmp_disp_layer_info layer_info[] = {
-		[ZYNQMP_DISP_LAYER_VID] = {
+		[ZYNQMP_DPSUB_LAYER_VID] = {
 			.formats = avbuf_vid_fmts,
 			.num_formats = ARRAY_SIZE(avbuf_vid_fmts),
 			.num_channels = 3,
 		},
-		[ZYNQMP_DISP_LAYER_GFX] = {
+		[ZYNQMP_DPSUB_LAYER_GFX] = {
 			.formats = avbuf_gfx_fmts,
 			.num_formats = ARRAY_SIZE(avbuf_gfx_fmts),
 			.num_channels = 1,
@@ -1362,7 +1128,7 @@ static int zynqmp_disp_create_layers(struct zynqmp_disp *disp)
 	unsigned int i;
 	int ret;
 
-	for (i = 0; i < ZYNQMP_DISP_NUM_LAYERS; i++) {
+	for (i = 0; i < ARRAY_SIZE(disp->layers); i++) {
 		struct zynqmp_disp_layer *layer = &disp->layers[i];
 
 		layer->id = i;
@@ -1372,6 +1138,8 @@ static int zynqmp_disp_create_layers(struct zynqmp_disp *disp)
 		ret = zynqmp_disp_layer_request_dma(disp, layer);
 		if (ret)
 			goto err;
+
+		disp->dpsub->layers[i] = layer;
 	}
 
 	return 0;
@@ -1382,19 +1150,23 @@ err:
 }
 
 /* -----------------------------------------------------------------------------
- * ZynqMP Display & DRM CRTC
+ * ZynqMP Display
  */
 
 /**
  * zynqmp_disp_enable - Enable the display controller
  * @disp: Display controller
  */
-static void zynqmp_disp_enable(struct zynqmp_disp *disp)
+void zynqmp_disp_enable(struct zynqmp_disp *disp)
 {
+	zynqmp_disp_blend_set_output_format(disp, ZYNQMP_DPSUB_FORMAT_RGB);
+	zynqmp_disp_blend_set_bg_color(disp, 0, 0, 0);
+
 	zynqmp_disp_avbuf_enable(disp);
 	/* Choose clock source based on the DT clock handle. */
-	zynqmp_disp_avbuf_set_clocks_sources(disp, disp->pclk_from_ps,
-					     disp->audio.clk_from_ps, true);
+	zynqmp_disp_avbuf_set_clocks_sources(disp, disp->dpsub->vid_clk_from_ps,
+					     disp->dpsub->aud_clk_from_ps,
+					     true);
 	zynqmp_disp_avbuf_enable_channels(disp);
 	zynqmp_disp_avbuf_enable_audio(disp);
 
@@ -1405,7 +1177,7 @@ static void zynqmp_disp_enable(struct zynqmp_disp *disp)
  * zynqmp_disp_disable - Disable the display controller
  * @disp: Display controller
  */
-static void zynqmp_disp_disable(struct zynqmp_disp *disp)
+void zynqmp_disp_disable(struct zynqmp_disp *disp)
 {
 	zynqmp_disp_audio_disable(disp);
 
@@ -1414,27 +1186,27 @@ static void zynqmp_disp_disable(struct zynqmp_disp *disp)
 	zynqmp_disp_avbuf_disable(disp);
 }
 
-static inline struct zynqmp_disp *crtc_to_disp(struct drm_crtc *crtc)
-{
-	return container_of(crtc, struct zynqmp_disp, crtc);
-}
-
-static int zynqmp_disp_crtc_setup_clock(struct drm_crtc *crtc,
-					struct drm_display_mode *adjusted_mode)
+/**
+ * zynqmp_disp_setup_clock - Configure the display controller pixel clock rate
+ * @disp: Display controller
+ * @mode_clock: The pixel clock rate, in Hz
+ *
+ * Return: 0 on success, or a negative error clock otherwise
+ */
+int zynqmp_disp_setup_clock(struct zynqmp_disp *disp,
+			    unsigned long mode_clock)
 {
-	struct zynqmp_disp *disp = crtc_to_disp(crtc);
-	unsigned long mode_clock = adjusted_mode->clock * 1000;
 	unsigned long rate;
 	long diff;
 	int ret;
 
-	ret = clk_set_rate(disp->pclk, mode_clock);
+	ret = clk_set_rate(disp->dpsub->vid_clk, mode_clock);
 	if (ret) {
-		dev_err(disp->dev, "failed to set a pixel clock\n");
+		dev_err(disp->dev, "failed to set the video clock\n");
 		return ret;
 	}
 
-	rate = clk_get_rate(disp->pclk);
+	rate = clk_get_rate(disp->dpsub->vid_clk);
 	diff = rate - mode_clock;
 	if (abs(diff) > mode_clock / 20)
 		dev_info(disp->dev,
@@ -1448,245 +1220,63 @@ static int zynqmp_disp_crtc_setup_clock(struct drm_crtc *crtc,
 	return 0;
 }
 
-static void
-zynqmp_disp_crtc_atomic_enable(struct drm_crtc *crtc,
-			       struct drm_atomic_state *state)
-{
-	struct zynqmp_disp *disp = crtc_to_disp(crtc);
-	struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
-	int ret, vrefresh;
-
-	pm_runtime_get_sync(disp->dev);
-
-	zynqmp_disp_crtc_setup_clock(crtc, adjusted_mode);
-
-	ret = clk_prepare_enable(disp->pclk);
-	if (ret) {
-		dev_err(disp->dev, "failed to enable a pixel clock\n");
-		pm_runtime_put_sync(disp->dev);
-		return;
-	}
-
-	zynqmp_disp_blend_set_output_format(disp, ZYNQMP_DPSUB_FORMAT_RGB);
-	zynqmp_disp_blend_set_bg_color(disp, 0, 0, 0);
-
-	zynqmp_disp_enable(disp);
-
-	/* Delay of 3 vblank intervals for timing gen to be stable */
-	vrefresh = (adjusted_mode->clock * 1000) /
-		   (adjusted_mode->vtotal * adjusted_mode->htotal);
-	msleep(3 * 1000 / vrefresh);
-}
-
-static void
-zynqmp_disp_crtc_atomic_disable(struct drm_crtc *crtc,
-				struct drm_atomic_state *state)
-{
-	struct zynqmp_disp *disp = crtc_to_disp(crtc);
-	struct drm_plane_state *old_plane_state;
-
-	/*
-	 * Disable the plane if active. The old plane state can be NULL in the
-	 * .shutdown() path if the plane is already disabled, skip
-	 * zynqmp_disp_plane_atomic_disable() in that case.
-	 */
-	old_plane_state = drm_atomic_get_old_plane_state(state, crtc->primary);
-	if (old_plane_state)
-		zynqmp_disp_plane_atomic_disable(crtc->primary, state);
-
-	zynqmp_disp_disable(disp);
-
-	drm_crtc_vblank_off(&disp->crtc);
-
-	spin_lock_irq(&crtc->dev->event_lock);
-	if (crtc->state->event) {
-		drm_crtc_send_vblank_event(crtc, crtc->state->event);
-		crtc->state->event = NULL;
-	}
-	spin_unlock_irq(&crtc->dev->event_lock);
-
-	clk_disable_unprepare(disp->pclk);
-	pm_runtime_put_sync(disp->dev);
-}
-
-static int zynqmp_disp_crtc_atomic_check(struct drm_crtc *crtc,
-					 struct drm_atomic_state *state)
-{
-	return drm_atomic_add_affected_planes(state, crtc);
-}
-
-static void
-zynqmp_disp_crtc_atomic_begin(struct drm_crtc *crtc,
-			      struct drm_atomic_state *state)
-{
-	drm_crtc_vblank_on(crtc);
-}
-
-static void
-zynqmp_disp_crtc_atomic_flush(struct drm_crtc *crtc,
-			      struct drm_atomic_state *state)
-{
-	if (crtc->state->event) {
-		struct drm_pending_vblank_event *event;
-
-		/* Consume the flip_done event from atomic helper. */
-		event = crtc->state->event;
-		crtc->state->event = NULL;
-
-		event->pipe = drm_crtc_index(crtc);
-
-		WARN_ON(drm_crtc_vblank_get(crtc) != 0);
-
-		spin_lock_irq(&crtc->dev->event_lock);
-		drm_crtc_arm_vblank_event(crtc, event);
-		spin_unlock_irq(&crtc->dev->event_lock);
-	}
-}
-
-static const struct drm_crtc_helper_funcs zynqmp_disp_crtc_helper_funcs = {
-	.atomic_enable	= zynqmp_disp_crtc_atomic_enable,
-	.atomic_disable	= zynqmp_disp_crtc_atomic_disable,
-	.atomic_check	= zynqmp_disp_crtc_atomic_check,
-	.atomic_begin	= zynqmp_disp_crtc_atomic_begin,
-	.atomic_flush	= zynqmp_disp_crtc_atomic_flush,
-};
-
-static int zynqmp_disp_crtc_enable_vblank(struct drm_crtc *crtc)
-{
-	struct zynqmp_disp *disp = crtc_to_disp(crtc);
-
-	zynqmp_dp_enable_vblank(disp->dpsub->dp);
-
-	return 0;
-}
-
-static void zynqmp_disp_crtc_disable_vblank(struct drm_crtc *crtc)
-{
-	struct zynqmp_disp *disp = crtc_to_disp(crtc);
-
-	zynqmp_dp_disable_vblank(disp->dpsub->dp);
-}
-
-static const struct drm_crtc_funcs zynqmp_disp_crtc_funcs = {
-	.destroy		= drm_crtc_cleanup,
-	.set_config		= drm_atomic_helper_set_config,
-	.page_flip		= drm_atomic_helper_page_flip,
-	.reset			= drm_atomic_helper_crtc_reset,
-	.atomic_duplicate_state	= drm_atomic_helper_crtc_duplicate_state,
-	.atomic_destroy_state	= drm_atomic_helper_crtc_destroy_state,
-	.enable_vblank		= zynqmp_disp_crtc_enable_vblank,
-	.disable_vblank		= zynqmp_disp_crtc_disable_vblank,
-};
-
-static int zynqmp_disp_create_crtc(struct zynqmp_disp *disp)
-{
-	struct drm_plane *plane = &disp->layers[ZYNQMP_DISP_LAYER_GFX].plane;
-	int ret;
-
-	ret = drm_crtc_init_with_planes(disp->drm, &disp->crtc, plane,
-					NULL, &zynqmp_disp_crtc_funcs, NULL);
-	if (ret < 0)
-		return ret;
-
-	drm_crtc_helper_add(&disp->crtc, &zynqmp_disp_crtc_helper_funcs);
-
-	/* Start with vertical blanking interrupt reporting disabled. */
-	drm_crtc_vblank_off(&disp->crtc);
-
-	return 0;
-}
-
-static void zynqmp_disp_map_crtc_to_plane(struct zynqmp_disp *disp)
-{
-	u32 possible_crtcs = drm_crtc_mask(&disp->crtc);
-	unsigned int i;
-
-	for (i = 0; i < ZYNQMP_DISP_NUM_LAYERS; i++)
-		disp->layers[i].plane.possible_crtcs = possible_crtcs;
-}
-
 /* -----------------------------------------------------------------------------
  * Initialization & Cleanup
  */
 
-int zynqmp_disp_drm_init(struct zynqmp_dpsub *dpsub)
-{
-	struct zynqmp_disp *disp = dpsub->disp;
-	int ret;
-
-	ret = zynqmp_disp_create_planes(disp);
-	if (ret)
-		return ret;
-
-	ret = zynqmp_disp_create_crtc(disp);
-	if (ret < 0)
-		return ret;
-
-	zynqmp_disp_map_crtc_to_plane(disp);
-
-	return 0;
-}
-
-int zynqmp_disp_probe(struct zynqmp_dpsub *dpsub, struct drm_device *drm)
+int zynqmp_disp_probe(struct zynqmp_dpsub *dpsub)
 {
 	struct platform_device *pdev = to_platform_device(dpsub->dev);
 	struct zynqmp_disp *disp;
-	struct zynqmp_disp_layer *layer;
 	struct resource *res;
 	int ret;
 
-	disp = drmm_kzalloc(drm, sizeof(*disp), GFP_KERNEL);
+	disp = kzalloc(sizeof(*disp), GFP_KERNEL);
 	if (!disp)
 		return -ENOMEM;
 
 	disp->dev = &pdev->dev;
 	disp->dpsub = dpsub;
-	disp->drm = drm;
-
-	dpsub->disp = disp;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "blend");
 	disp->blend.base = devm_ioremap_resource(disp->dev, res);
-	if (IS_ERR(disp->blend.base))
-		return PTR_ERR(disp->blend.base);
+	if (IS_ERR(disp->blend.base)) {
+		ret = PTR_ERR(disp->blend.base);
+		goto error;
+	}
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "av_buf");
 	disp->avbuf.base = devm_ioremap_resource(disp->dev, res);
-	if (IS_ERR(disp->avbuf.base))
-		return PTR_ERR(disp->avbuf.base);
+	if (IS_ERR(disp->avbuf.base)) {
+		ret = PTR_ERR(disp->avbuf.base);
+		goto error;
+	}
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aud");
 	disp->audio.base = devm_ioremap_resource(disp->dev, res);
-	if (IS_ERR(disp->audio.base))
-		return PTR_ERR(disp->audio.base);
-
-	/* Try the live PL video clock */
-	disp->pclk = devm_clk_get(disp->dev, "dp_live_video_in_clk");
-	if (!IS_ERR(disp->pclk))
-		disp->pclk_from_ps = false;
-	else if (PTR_ERR(disp->pclk) == -EPROBE_DEFER)
-		return PTR_ERR(disp->pclk);
-
-	/* If the live PL video clock is not valid, fall back to PS clock */
-	if (IS_ERR_OR_NULL(disp->pclk)) {
-		disp->pclk = devm_clk_get(disp->dev, "dp_vtc_pixel_clk_in");
-		if (IS_ERR(disp->pclk)) {
-			dev_err(disp->dev, "failed to init any video clock\n");
-			return PTR_ERR(disp->pclk);
-		}
-		disp->pclk_from_ps = true;
+	if (IS_ERR(disp->audio.base)) {
+		ret = PTR_ERR(disp->audio.base);
+		goto error;
 	}
 
-	zynqmp_disp_audio_init(disp);
-
 	ret = zynqmp_disp_create_layers(disp);
 	if (ret)
-		return ret;
+		goto error;
+
+	if (disp->dpsub->dma_enabled) {
+		struct zynqmp_disp_layer *layer;
 
-	layer = &disp->layers[ZYNQMP_DISP_LAYER_VID];
-	dpsub->dma_align = 1 << layer->dmas[0].chan->device->copy_align;
+		layer = &disp->layers[ZYNQMP_DPSUB_LAYER_VID];
+		dpsub->dma_align = 1 << layer->dmas[0].chan->device->copy_align;
+	}
+
+	dpsub->disp = disp;
 
 	return 0;
+
+error:
+	kfree(disp);
+	return ret;
 }
 
 void zynqmp_disp_remove(struct zynqmp_dpsub *dpsub)