drivers/media/platform/vsp1/vsp1_wpf.c - kernel/msm-4.9 - Gitiles

 /*
  * vsp1_wpf.c  --  R-Car VSP1 Write Pixel Formatter
  *
  * Copyright (C) 2013-2014 Renesas Electronics Corporation
  *
  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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/device.h>

 #include <media/v4l2-subdev.h>

 #include "vsp1.h"
 #include "vsp1_dl.h"
 #include "vsp1_pipe.h"
 #include "vsp1_rwpf.h"
 #include "vsp1_video.h"

 #define WPF_GEN2_MAX_WIDTH			2048U
 #define WPF_GEN2_MAX_HEIGHT			2048U
 #define WPF_GEN3_MAX_WIDTH			8190U
 #define WPF_GEN3_MAX_HEIGHT			8190U

 /* -----------------------------------------------------------------------------
  * Device Access
  */

 static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf,
 				  struct vsp1_dl_list *dl, u32 reg, u32 data)
 {
 	vsp1_dl_list_write(dl, reg + wpf->entity.index * VI6_WPF_OFFSET, data);
 }

 /* -----------------------------------------------------------------------------
  * Controls
  */

 enum wpf_flip_ctrl {
 	WPF_CTRL_VFLIP = 0,
 	WPF_CTRL_HFLIP = 1,
 	WPF_CTRL_MAX,
 };

 static int vsp1_wpf_s_ctrl(struct v4l2_ctrl *ctrl)
 {
 	struct vsp1_rwpf *wpf =
 		container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
 	unsigned int i;
 	u32 flip = 0;

 	switch (ctrl->id) {
 	case V4L2_CID_HFLIP:
 	case V4L2_CID_VFLIP:
 		for (i = 0; i < WPF_CTRL_MAX; ++i) {
 			if (wpf->flip.ctrls[i])
 				flip |= wpf->flip.ctrls[i]->val ? BIT(i) : 0;
 		}

 		spin_lock_irq(&wpf->flip.lock);
 		wpf->flip.pending = flip;
 		spin_unlock_irq(&wpf->flip.lock);
 		break;

 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static const struct v4l2_ctrl_ops vsp1_wpf_ctrl_ops = {
 	.s_ctrl = vsp1_wpf_s_ctrl,
 };

 static int wpf_init_controls(struct vsp1_rwpf *wpf)
 {
 	struct vsp1_device *vsp1 = wpf->entity.vsp1;
 	unsigned int num_flip_ctrls;

 	spin_lock_init(&wpf->flip.lock);

 	if (wpf->entity.index != 0) {
 		/* Only WPF0 supports flipping. */
 		num_flip_ctrls = 0;
 	} else if (vsp1->info->features & VSP1_HAS_WPF_HFLIP) {
 		/* When horizontal flip is supported the WPF implements two
 		 * controls (horizontal flip and vertical flip).
 		 */
 		num_flip_ctrls = 2;
 	} else if (vsp1->info->features & VSP1_HAS_WPF_VFLIP) {
 		/* When only vertical flip is supported the WPF implements a
 		 * single control (vertical flip).
 		 */
 		num_flip_ctrls = 1;
 	} else {
 		/* Otherwise flipping is not supported. */
 		num_flip_ctrls = 0;
 	}

 	vsp1_rwpf_init_ctrls(wpf, num_flip_ctrls);

 	if (num_flip_ctrls >= 1) {
 		wpf->flip.ctrls[WPF_CTRL_VFLIP] =
 			v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
 					  V4L2_CID_VFLIP, 0, 1, 1, 0);
 	}

 	if (num_flip_ctrls == 2) {
 		wpf->flip.ctrls[WPF_CTRL_HFLIP] =
 			v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
 					  V4L2_CID_HFLIP, 0, 1, 1, 0);

 		v4l2_ctrl_cluster(2, wpf->flip.ctrls);
 	}

 	if (wpf->ctrls.error) {
 		dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
 			wpf->entity.index);
 		return wpf->ctrls.error;
 	}

 	return 0;
 }

 /* -----------------------------------------------------------------------------
  * V4L2 Subdevice Core Operations
  */

 static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
 {
 	struct vsp1_rwpf *wpf = to_rwpf(subdev);
 	struct vsp1_device *vsp1 = wpf->entity.vsp1;

 	if (enable)
 		return 0;

 	/* Write to registers directly when stopping the stream as there will be
 	 * no pipeline run to apply the display list.
 	 */
 	vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
 	vsp1_write(vsp1, wpf->entity.index * VI6_WPF_OFFSET +
 		   VI6_WPF_SRCRPF, 0);

 	return 0;
 }

 /* -----------------------------------------------------------------------------
  * V4L2 Subdevice Operations
  */

 static const struct v4l2_subdev_video_ops wpf_video_ops = {
 	.s_stream = wpf_s_stream,
 };

 static const struct v4l2_subdev_ops wpf_ops = {
 	.video	= &wpf_video_ops,
 	.pad    = &vsp1_rwpf_pad_ops,
 };

 /* -----------------------------------------------------------------------------
  * VSP1 Entity Operations
  */

 static void vsp1_wpf_destroy(struct vsp1_entity *entity)
 {
 	struct vsp1_rwpf *wpf = entity_to_rwpf(entity);

 	vsp1_dlm_destroy(wpf->dlm);
 }

 static void wpf_configure(struct vsp1_entity *entity,
 			  struct vsp1_pipeline *pipe,
 			  struct vsp1_dl_list *dl,
 			  enum vsp1_entity_params params)
 {
 	struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
 	struct vsp1_device *vsp1 = wpf->entity.vsp1;
 	const struct v4l2_mbus_framefmt *source_format;
 	const struct v4l2_mbus_framefmt *sink_format;
 	unsigned int i;
 	u32 outfmt = 0;
 	u32 srcrpf = 0;

 	if (params == VSP1_ENTITY_PARAMS_RUNTIME) {
 		const unsigned int mask = BIT(WPF_CTRL_VFLIP)
 					| BIT(WPF_CTRL_HFLIP);

 		spin_lock(&wpf->flip.lock);
 		wpf->flip.active = (wpf->flip.active & ~mask)
 				 | (wpf->flip.pending & mask);
 		spin_unlock(&wpf->flip.lock);

 		outfmt = (wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT) | wpf->outfmt;

 		if (wpf->flip.active & BIT(WPF_CTRL_VFLIP))
 			outfmt |= VI6_WPF_OUTFMT_FLP;
 		if (wpf->flip.active & BIT(WPF_CTRL_HFLIP))
 			outfmt |= VI6_WPF_OUTFMT_HFLP;

 		vsp1_wpf_write(wpf, dl, VI6_WPF_OUTFMT, outfmt);
 		return;
 	}

 	sink_format = vsp1_entity_get_pad_format(&wpf->entity,
 						 wpf->entity.config,
 						 RWPF_PAD_SINK);
 	source_format = vsp1_entity_get_pad_format(&wpf->entity,
 						   wpf->entity.config,
 						   RWPF_PAD_SOURCE);

 	if (params == VSP1_ENTITY_PARAMS_PARTITION) {
 		const struct v4l2_pix_format_mplane *format = &wpf->format;
 		struct vsp1_rwpf_memory mem = wpf->mem;
 		unsigned int flip = wpf->flip.active;
 		unsigned int width = source_format->width;
 		unsigned int height = source_format->height;
 		unsigned int offset;

 		/* Cropping. The partition algorithm can split the image into
 		 * multiple slices.
 		 */
 		vsp1_wpf_write(wpf, dl, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
 			       (0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
 			       (width << VI6_WPF_SZCLIP_SIZE_SHIFT));
 		vsp1_wpf_write(wpf, dl, VI6_WPF_VSZCLIP, VI6_WPF_SZCLIP_EN |
 			       (0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
 			       (height << VI6_WPF_SZCLIP_SIZE_SHIFT));

 		if (pipe->lif)
 			return;

 		/* Update the memory offsets based on flipping configuration.
 		 * The destination addresses point to the locations where the
 		 * VSP starts writing to memory, which can be different corners
 		 * of the image depending on vertical flipping. Horizontal
 		 * flipping is handled through a line buffer and doesn't modify
 		 * the start address.
 		 */
 		if (flip & BIT(WPF_CTRL_VFLIP)) {
 			mem.addr[0] += (format->height - 1)
 				     * format->plane_fmt[0].bytesperline;

 			if (format->num_planes > 1) {
 				offset = (format->height / wpf->fmtinfo->vsub - 1)
 				       * format->plane_fmt[1].bytesperline;
 				mem.addr[1] += offset;
 				mem.addr[2] += offset;
 			}
 		}

 		vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_Y, mem.addr[0]);
 		vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C0, mem.addr[1]);
 		vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C1, mem.addr[2]);
 		return;
 	}

 	/* Format */
 	if (!pipe->lif) {
 		const struct v4l2_pix_format_mplane *format = &wpf->format;
 		const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;

 		outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;

 		if (fmtinfo->alpha)
 			outfmt |= VI6_WPF_OUTFMT_PXA;
 		if (fmtinfo->swap_yc)
 			outfmt |= VI6_WPF_OUTFMT_SPYCS;
 		if (fmtinfo->swap_uv)
 			outfmt |= VI6_WPF_OUTFMT_SPUVS;

 		/* Destination stride and byte swapping. */
 		vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_Y,
 			       format->plane_fmt[0].bytesperline);
 		if (format->num_planes > 1)
 			vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_C,
 				       format->plane_fmt[1].bytesperline);

 		vsp1_wpf_write(wpf, dl, VI6_WPF_DSWAP, fmtinfo->swap);

 		if (vsp1->info->features & VSP1_HAS_WPF_HFLIP &&
 		    wpf->entity.index == 0)
 			vsp1_wpf_write(wpf, dl, VI6_WPF_ROT_CTRL,
 				       VI6_WPF_ROT_CTRL_LN16 |
 				       (256 << VI6_WPF_ROT_CTRL_LMEM_WD_SHIFT));
 	}

 	if (sink_format->code != source_format->code)
 		outfmt |= VI6_WPF_OUTFMT_CSC;

 	wpf->outfmt = outfmt;

 	vsp1_dl_list_write(dl, VI6_DPR_WPF_FPORCH(wpf->entity.index),
 			   VI6_DPR_WPF_FPORCH_FP_WPFN);

 	vsp1_dl_list_write(dl, VI6_WPF_WRBCK_CTRL, 0);

 	/* Sources. If the pipeline has a single input and BRU is not used,
 	 * configure it as the master layer. Otherwise configure all
 	 * inputs as sub-layers and select the virtual RPF as the master
 	 * layer.
 	 */
 	for (i = 0; i < vsp1->info->rpf_count; ++i) {
 		struct vsp1_rwpf *input = pipe->inputs[i];

 		if (!input)
 			continue;

 		srcrpf |= (!pipe->bru && pipe->num_inputs == 1)
 			? VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index)
 			: VI6_WPF_SRCRPF_RPF_ACT_SUB(input->entity.index);
 	}

 	if (pipe->bru || pipe->num_inputs > 1)
 		srcrpf |= VI6_WPF_SRCRPF_VIRACT_MST;

 	vsp1_wpf_write(wpf, dl, VI6_WPF_SRCRPF, srcrpf);

 	/* Enable interrupts */
 	vsp1_dl_list_write(dl, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
 	vsp1_dl_list_write(dl, VI6_WPF_IRQ_ENB(wpf->entity.index),
 			   VI6_WFP_IRQ_ENB_DFEE);
 }

 static const struct vsp1_entity_operations wpf_entity_ops = {
 	.destroy = vsp1_wpf_destroy,
 	.configure = wpf_configure,
 };

 /* -----------------------------------------------------------------------------
  * Initialization and Cleanup
  */

 struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
 {
 	struct vsp1_rwpf *wpf;
 	char name[6];
 	int ret;

 	wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
 	if (wpf == NULL)
 		return ERR_PTR(-ENOMEM);

 	if (vsp1->info->gen == 2) {
 		wpf->max_width = WPF_GEN2_MAX_WIDTH;
 		wpf->max_height = WPF_GEN2_MAX_HEIGHT;
 	} else {
 		wpf->max_width = WPF_GEN3_MAX_WIDTH;
 		wpf->max_height = WPF_GEN3_MAX_HEIGHT;
 	}

 	wpf->entity.ops = &wpf_entity_ops;
 	wpf->entity.type = VSP1_ENTITY_WPF;
 	wpf->entity.index = index;

 	sprintf(name, "wpf.%u", index);
 	ret = vsp1_entity_init(vsp1, &wpf->entity, name, 2, &wpf_ops,
 			       MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER);
 	if (ret < 0)
 		return ERR_PTR(ret);

 	/* Initialize the display list manager. */
 	wpf->dlm = vsp1_dlm_create(vsp1, index, 4);
 	if (!wpf->dlm) {
 		ret = -ENOMEM;
 		goto error;
 	}

 	/* Initialize the control handler. */
 	ret = wpf_init_controls(wpf);
 	if (ret < 0) {
 		dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
 			index);
 		goto error;
 	}

 	v4l2_ctrl_handler_setup(&wpf->ctrls);

 	return wpf;

 error:
 	vsp1_entity_destroy(&wpf->entity);
 	return ERR_PTR(ret);
 }
	/*
	* vsp1_wpf.c -- R-Car VSP1 Write Pixel Formatter
	*
	* Copyright (C) 2013-2014 Renesas Electronics Corporation
	*
	* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.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/device.h>

	#include <media/v4l2-subdev.h>

	#include "vsp1.h"
	#include "vsp1_dl.h"
	#include "vsp1_pipe.h"
	#include "vsp1_rwpf.h"
	#include "vsp1_video.h"

	#define WPF_GEN2_MAX_WIDTH 2048U
	#define WPF_GEN2_MAX_HEIGHT 2048U
	#define WPF_GEN3_MAX_WIDTH 8190U
	#define WPF_GEN3_MAX_HEIGHT 8190U

	/* -----------------------------------------------------------------------------
	* Device Access
	*/

	static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf,
	struct vsp1_dl_list *dl, u32 reg, u32 data)
	{
	vsp1_dl_list_write(dl, reg + wpf->entity.index * VI6_WPF_OFFSET, data);
	}

	/* -----------------------------------------------------------------------------
	* Controls
	*/

	enum wpf_flip_ctrl {
	WPF_CTRL_VFLIP = 0,
	WPF_CTRL_HFLIP = 1,
	WPF_CTRL_MAX,
	};

	static int vsp1_wpf_s_ctrl(struct v4l2_ctrl *ctrl)
	{
	struct vsp1_rwpf *wpf =
	container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
	unsigned int i;
	u32 flip = 0;

	switch (ctrl->id) {
	case V4L2_CID_HFLIP:
	case V4L2_CID_VFLIP:
	for (i = 0; i < WPF_CTRL_MAX; ++i) {
	if (wpf->flip.ctrls[i])
	flip \|= wpf->flip.ctrls[i]->val ? BIT(i) : 0;
	}

	spin_lock_irq(&wpf->flip.lock);
	wpf->flip.pending = flip;
	spin_unlock_irq(&wpf->flip.lock);
	break;

	default:
	return -EINVAL;
	}

	return 0;
	}

	static const struct v4l2_ctrl_ops vsp1_wpf_ctrl_ops = {
	.s_ctrl = vsp1_wpf_s_ctrl,
	};

	static int wpf_init_controls(struct vsp1_rwpf *wpf)
	{
	struct vsp1_device *vsp1 = wpf->entity.vsp1;
	unsigned int num_flip_ctrls;

	spin_lock_init(&wpf->flip.lock);

	if (wpf->entity.index != 0) {
	/* Only WPF0 supports flipping. */
	num_flip_ctrls = 0;
	} else if (vsp1->info->features & VSP1_HAS_WPF_HFLIP) {
	/* When horizontal flip is supported the WPF implements two
	* controls (horizontal flip and vertical flip).
	*/
	num_flip_ctrls = 2;
	} else if (vsp1->info->features & VSP1_HAS_WPF_VFLIP) {
	/* When only vertical flip is supported the WPF implements a
	* single control (vertical flip).
	*/
	num_flip_ctrls = 1;
	} else {
	/* Otherwise flipping is not supported. */
	num_flip_ctrls = 0;
	}

	vsp1_rwpf_init_ctrls(wpf, num_flip_ctrls);

	if (num_flip_ctrls >= 1) {
	wpf->flip.ctrls[WPF_CTRL_VFLIP] =
	v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
	V4L2_CID_VFLIP, 0, 1, 1, 0);
	}

	if (num_flip_ctrls == 2) {
	wpf->flip.ctrls[WPF_CTRL_HFLIP] =
	v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops,
	V4L2_CID_HFLIP, 0, 1, 1, 0);

	v4l2_ctrl_cluster(2, wpf->flip.ctrls);
	}

	if (wpf->ctrls.error) {
	dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
	wpf->entity.index);
	return wpf->ctrls.error;
	}

	return 0;
	}

	/* -----------------------------------------------------------------------------
	* V4L2 Subdevice Core Operations
	*/

	static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
	{
	struct vsp1_rwpf *wpf = to_rwpf(subdev);
	struct vsp1_device *vsp1 = wpf->entity.vsp1;

	if (enable)
	return 0;

	/* Write to registers directly when stopping the stream as there will be
	* no pipeline run to apply the display list.
	*/
	vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
	vsp1_write(vsp1, wpf->entity.index * VI6_WPF_OFFSET +
	VI6_WPF_SRCRPF, 0);

	return 0;
	}

	/* -----------------------------------------------------------------------------
	* V4L2 Subdevice Operations
	*/

	static const struct v4l2_subdev_video_ops wpf_video_ops = {
	.s_stream = wpf_s_stream,
	};

	static const struct v4l2_subdev_ops wpf_ops = {
	.video = &wpf_video_ops,
	.pad = &vsp1_rwpf_pad_ops,
	};

	/* -----------------------------------------------------------------------------
	* VSP1 Entity Operations
	*/

	static void vsp1_wpf_destroy(struct vsp1_entity *entity)
	{
	struct vsp1_rwpf *wpf = entity_to_rwpf(entity);

	vsp1_dlm_destroy(wpf->dlm);
	}

	static void wpf_configure(struct vsp1_entity *entity,
	struct vsp1_pipeline *pipe,
	struct vsp1_dl_list *dl,
	enum vsp1_entity_params params)
	{
	struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
	struct vsp1_device *vsp1 = wpf->entity.vsp1;
	const struct v4l2_mbus_framefmt *source_format;
	const struct v4l2_mbus_framefmt *sink_format;
	unsigned int i;
	u32 outfmt = 0;
	u32 srcrpf = 0;

	if (params == VSP1_ENTITY_PARAMS_RUNTIME) {
	const unsigned int mask = BIT(WPF_CTRL_VFLIP)
	\| BIT(WPF_CTRL_HFLIP);

	spin_lock(&wpf->flip.lock);
	wpf->flip.active = (wpf->flip.active & ~mask)
	\| (wpf->flip.pending & mask);
	spin_unlock(&wpf->flip.lock);

	outfmt = (wpf->alpha << VI6_WPF_OUTFMT_PDV_SHIFT) \| wpf->outfmt;

	if (wpf->flip.active & BIT(WPF_CTRL_VFLIP))
	outfmt \|= VI6_WPF_OUTFMT_FLP;
	if (wpf->flip.active & BIT(WPF_CTRL_HFLIP))
	outfmt \|= VI6_WPF_OUTFMT_HFLP;

	vsp1_wpf_write(wpf, dl, VI6_WPF_OUTFMT, outfmt);
	return;
	}

	sink_format = vsp1_entity_get_pad_format(&wpf->entity,
	wpf->entity.config,
	RWPF_PAD_SINK);
	source_format = vsp1_entity_get_pad_format(&wpf->entity,
	wpf->entity.config,
	RWPF_PAD_SOURCE);

	if (params == VSP1_ENTITY_PARAMS_PARTITION) {
	const struct v4l2_pix_format_mplane *format = &wpf->format;
	struct vsp1_rwpf_memory mem = wpf->mem;
	unsigned int flip = wpf->flip.active;
	unsigned int width = source_format->width;
	unsigned int height = source_format->height;
	unsigned int offset;

	/* Cropping. The partition algorithm can split the image into
	* multiple slices.
	*/
	vsp1_wpf_write(wpf, dl, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN \|
	(0 << VI6_WPF_SZCLIP_OFST_SHIFT) \|
	(width << VI6_WPF_SZCLIP_SIZE_SHIFT));
	vsp1_wpf_write(wpf, dl, VI6_WPF_VSZCLIP, VI6_WPF_SZCLIP_EN \|
	(0 << VI6_WPF_SZCLIP_OFST_SHIFT) \|
	(height << VI6_WPF_SZCLIP_SIZE_SHIFT));

	if (pipe->lif)
	return;

	/* Update the memory offsets based on flipping configuration.
	* The destination addresses point to the locations where the
	* VSP starts writing to memory, which can be different corners
	* of the image depending on vertical flipping. Horizontal
	* flipping is handled through a line buffer and doesn't modify
	* the start address.
	*/
	if (flip & BIT(WPF_CTRL_VFLIP)) {
	mem.addr[0] += (format->height - 1)
	* format->plane_fmt[0].bytesperline;

	if (format->num_planes > 1) {
	offset = (format->height / wpf->fmtinfo->vsub - 1)
	* format->plane_fmt[1].bytesperline;
	mem.addr[1] += offset;
	mem.addr[2] += offset;
	}
	}

	vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_Y, mem.addr[0]);
	vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C0, mem.addr[1]);
	vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_ADDR_C1, mem.addr[2]);
	return;
	}

	/* Format */
	if (!pipe->lif) {
	const struct v4l2_pix_format_mplane *format = &wpf->format;
	const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;

	outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;

	if (fmtinfo->alpha)
	outfmt \|= VI6_WPF_OUTFMT_PXA;
	if (fmtinfo->swap_yc)
	outfmt \|= VI6_WPF_OUTFMT_SPYCS;
	if (fmtinfo->swap_uv)
	outfmt \|= VI6_WPF_OUTFMT_SPUVS;

	/* Destination stride and byte swapping. */
	vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_Y,
	format->plane_fmt[0].bytesperline);
	if (format->num_planes > 1)
	vsp1_wpf_write(wpf, dl, VI6_WPF_DSTM_STRIDE_C,
	format->plane_fmt[1].bytesperline);

	vsp1_wpf_write(wpf, dl, VI6_WPF_DSWAP, fmtinfo->swap);

	if (vsp1->info->features & VSP1_HAS_WPF_HFLIP &&
	wpf->entity.index == 0)
	vsp1_wpf_write(wpf, dl, VI6_WPF_ROT_CTRL,
	VI6_WPF_ROT_CTRL_LN16 \|
	(256 << VI6_WPF_ROT_CTRL_LMEM_WD_SHIFT));
	}

	if (sink_format->code != source_format->code)
	outfmt \|= VI6_WPF_OUTFMT_CSC;

	wpf->outfmt = outfmt;

	vsp1_dl_list_write(dl, VI6_DPR_WPF_FPORCH(wpf->entity.index),
	VI6_DPR_WPF_FPORCH_FP_WPFN);

	vsp1_dl_list_write(dl, VI6_WPF_WRBCK_CTRL, 0);

	/* Sources. If the pipeline has a single input and BRU is not used,
	* configure it as the master layer. Otherwise configure all
	* inputs as sub-layers and select the virtual RPF as the master
	* layer.
	*/
	for (i = 0; i < vsp1->info->rpf_count; ++i) {
	struct vsp1_rwpf *input = pipe->inputs[i];

	if (!input)
	continue;

	srcrpf \|= (!pipe->bru && pipe->num_inputs == 1)
	? VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index)
	: VI6_WPF_SRCRPF_RPF_ACT_SUB(input->entity.index);
	}

	if (pipe->bru \|\| pipe->num_inputs > 1)
	srcrpf \|= VI6_WPF_SRCRPF_VIRACT_MST;

	vsp1_wpf_write(wpf, dl, VI6_WPF_SRCRPF, srcrpf);

	/* Enable interrupts */
	vsp1_dl_list_write(dl, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
	vsp1_dl_list_write(dl, VI6_WPF_IRQ_ENB(wpf->entity.index),
	VI6_WFP_IRQ_ENB_DFEE);
	}

	static const struct vsp1_entity_operations wpf_entity_ops = {
	.destroy = vsp1_wpf_destroy,
	.configure = wpf_configure,
	};

	/* -----------------------------------------------------------------------------
	* Initialization and Cleanup
	*/

	struct vsp1_rwpf vsp1_wpf_create(struct vsp1_device vsp1, unsigned int index)
	{
	struct vsp1_rwpf *wpf;
	char name[6];
	int ret;

	wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
	if (wpf == NULL)
	return ERR_PTR(-ENOMEM);

	if (vsp1->info->gen == 2) {
	wpf->max_width = WPF_GEN2_MAX_WIDTH;
	wpf->max_height = WPF_GEN2_MAX_HEIGHT;
	} else {
	wpf->max_width = WPF_GEN3_MAX_WIDTH;
	wpf->max_height = WPF_GEN3_MAX_HEIGHT;
	}

	wpf->entity.ops = &wpf_entity_ops;
	wpf->entity.type = VSP1_ENTITY_WPF;
	wpf->entity.index = index;

	sprintf(name, "wpf.%u", index);
	ret = vsp1_entity_init(vsp1, &wpf->entity, name, 2, &wpf_ops,
	MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER);
	if (ret < 0)
	return ERR_PTR(ret);

	/* Initialize the display list manager. */
	wpf->dlm = vsp1_dlm_create(vsp1, index, 4);
	if (!wpf->dlm) {
	ret = -ENOMEM;
	goto error;
	}

	/* Initialize the control handler. */
	ret = wpf_init_controls(wpf);
	if (ret < 0) {
	dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n",
	index);
	goto error;
	}

	v4l2_ctrl_handler_setup(&wpf->ctrls);

	return wpf;

	error:
	vsp1_entity_destroy(&wpf->entity);
	return ERR_PTR(ret);
	}