drivers/gpu/drm/rcar-du/rcar_du_plane.c - kernel/msm-4.19 - Gitiles

 /*
  * rcar_du_plane.c  --  R-Car Display Unit Planes
  *
  * 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 <drm/drmP.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_plane_helper.h>

 #include "rcar_du_drv.h"
 #include "rcar_du_kms.h"
 #include "rcar_du_plane.h"
 #include "rcar_du_regs.h"

 #define RCAR_DU_COLORKEY_NONE		(0 << 24)
 #define RCAR_DU_COLORKEY_SOURCE		(1 << 24)
 #define RCAR_DU_COLORKEY_MASK		(1 << 24)

 static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
 			      unsigned int index, u32 reg)
 {
 	return rcar_du_read(rgrp->dev,
 			    rgrp->mmio_offset + index * PLANE_OFF + reg);
 }

 static void rcar_du_plane_write(struct rcar_du_group *rgrp,
 				unsigned int index, u32 reg, u32 data)
 {
 	rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
 		      data);
 }

 static void rcar_du_plane_setup_fb(struct rcar_du_plane *plane)
 {
 	struct rcar_du_plane_state *state =
 		to_rcar_plane_state(plane->plane.state);
 	struct drm_framebuffer *fb = plane->plane.state->fb;
 	struct rcar_du_group *rgrp = plane->group;
 	unsigned int src_x = state->state.src_x >> 16;
 	unsigned int src_y = state->state.src_y >> 16;
 	unsigned int index = state->hwindex;
 	struct drm_gem_cma_object *gem;
 	bool interlaced;
 	u32 mwr;

 	interlaced = state->state.crtc->state->adjusted_mode.flags
 		   & DRM_MODE_FLAG_INTERLACE;

 	/* Memory pitch (expressed in pixels). Must be doubled for interlaced
 	 * operation with 32bpp formats.
 	 */
 	if (state->format->planes == 2)
 		mwr = fb->pitches[0];
 	else
 		mwr = fb->pitches[0] * 8 / state->format->bpp;

 	if (interlaced && state->format->bpp == 32)
 		mwr *= 2;

 	rcar_du_plane_write(rgrp, index, PnMWR, mwr);

 	/* The Y position is expressed in raster line units and must be doubled
 	 * for 32bpp formats, according to the R8A7790 datasheet. No mention of
 	 * doubling the Y position is found in the R8A7779 datasheet, but the
 	 * rule seems to apply there as well.
 	 *
 	 * Despite not being documented, doubling seem not to be needed when
 	 * operating in interlaced mode.
 	 *
 	 * Similarly, for the second plane, NV12 and NV21 formats seem to
 	 * require a halved Y position value, in both progressive and interlaced
 	 * modes.
 	 */
 	rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
 	rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
 			    (!interlaced && state->format->bpp == 32 ? 2 : 1));

 	gem = drm_fb_cma_get_gem_obj(fb, 0);
 	rcar_du_plane_write(rgrp, index, PnDSA0R, gem->paddr + fb->offsets[0]);

 	if (state->format->planes == 2) {
 		index = (index + 1) % 8;

 		rcar_du_plane_write(rgrp, index, PnMWR, fb->pitches[0]);

 		rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
 		rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
 				    (state->format->bpp == 16 ? 2 : 1) / 2);

 		gem = drm_fb_cma_get_gem_obj(fb, 1);
 		rcar_du_plane_write(rgrp, index, PnDSA0R,
 				    gem->paddr + fb->offsets[1]);
 	}
 }

 static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
 				     unsigned int index)
 {
 	struct rcar_du_plane_state *state =
 		to_rcar_plane_state(plane->plane.state);
 	struct rcar_du_group *rgrp = plane->group;
 	u32 colorkey;
 	u32 pnmr;

 	/* The PnALPHAR register controls alpha-blending in 16bpp formats
 	 * (ARGB1555 and XRGB1555).
 	 *
 	 * For ARGB, set the alpha value to 0, and enable alpha-blending when
 	 * the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
 	 *
 	 * For XRGB, set the alpha value to the plane-wide alpha value and
 	 * enable alpha-blending regardless of the X bit value.
 	 */
 	if (state->format->fourcc != DRM_FORMAT_XRGB1555)
 		rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
 	else
 		rcar_du_plane_write(rgrp, index, PnALPHAR,
 				    PnALPHAR_ABIT_X | state->alpha);

 	pnmr = PnMR_BM_MD | state->format->pnmr;

 	/* Disable color keying when requested. YUV formats have the
 	 * PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
 	 * automatically.
 	 */
 	if ((state->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
 		pnmr |= PnMR_SPIM_TP_OFF;

 	/* For packed YUV formats we need to select the U/V order. */
 	if (state->format->fourcc == DRM_FORMAT_YUYV)
 		pnmr |= PnMR_YCDF_YUYV;

 	rcar_du_plane_write(rgrp, index, PnMR, pnmr);

 	switch (state->format->fourcc) {
 	case DRM_FORMAT_RGB565:
 		colorkey = ((state->colorkey & 0xf80000) >> 8)
 			 | ((state->colorkey & 0x00fc00) >> 5)
 			 | ((state->colorkey & 0x0000f8) >> 3);
 		rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
 		break;

 	case DRM_FORMAT_ARGB1555:
 	case DRM_FORMAT_XRGB1555:
 		colorkey = ((state->colorkey & 0xf80000) >> 9)
 			 | ((state->colorkey & 0x00f800) >> 6)
 			 | ((state->colorkey & 0x0000f8) >> 3);
 		rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
 		break;

 	case DRM_FORMAT_XRGB8888:
 	case DRM_FORMAT_ARGB8888:
 		rcar_du_plane_write(rgrp, index, PnTC3R,
 				    PnTC3R_CODE | (state->colorkey & 0xffffff));
 		break;
 	}
 }

 static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
 				  unsigned int index)
 {
 	struct rcar_du_plane_state *state =
 		to_rcar_plane_state(plane->plane.state);
 	struct rcar_du_group *rgrp = plane->group;
 	u32 ddcr2 = PnDDCR2_CODE;
 	u32 ddcr4;

 	/* Data format
 	 *
 	 * The data format is selected by the DDDF field in PnMR and the EDF
 	 * field in DDCR4.
 	 */
 	ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
 	ddcr4 &= ~PnDDCR4_EDF_MASK;
 	ddcr4 |= state->format->edf | PnDDCR4_CODE;

 	rcar_du_plane_setup_mode(plane, index);

 	if (state->format->planes == 2) {
 		if (state->hwindex != index) {
 			if (state->format->fourcc == DRM_FORMAT_NV12 ||
 			    state->format->fourcc == DRM_FORMAT_NV21)
 				ddcr2 |= PnDDCR2_Y420;

 			if (state->format->fourcc == DRM_FORMAT_NV21)
 				ddcr2 |= PnDDCR2_NV21;

 			ddcr2 |= PnDDCR2_DIVU;
 		} else {
 			ddcr2 |= PnDDCR2_DIVY;
 		}
 	}

 	rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
 	rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);

 	/* Destination position and size */
 	rcar_du_plane_write(rgrp, index, PnDSXR, plane->plane.state->crtc_w);
 	rcar_du_plane_write(rgrp, index, PnDSYR, plane->plane.state->crtc_h);
 	rcar_du_plane_write(rgrp, index, PnDPXR, plane->plane.state->crtc_x);
 	rcar_du_plane_write(rgrp, index, PnDPYR, plane->plane.state->crtc_y);

 	/* Wrap-around and blinking, disabled */
 	rcar_du_plane_write(rgrp, index, PnWASPR, 0);
 	rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
 	rcar_du_plane_write(rgrp, index, PnBTR, 0);
 	rcar_du_plane_write(rgrp, index, PnMLR, 0);
 }

 void rcar_du_plane_setup(struct rcar_du_plane *plane)
 {
 	struct rcar_du_plane_state *state =
 		to_rcar_plane_state(plane->plane.state);

 	__rcar_du_plane_setup(plane, state->hwindex);
 	if (state->format->planes == 2)
 		__rcar_du_plane_setup(plane, (state->hwindex + 1) % 8);

 	rcar_du_plane_setup_fb(plane);
 }

 static int rcar_du_plane_atomic_check(struct drm_plane *plane,
 				      struct drm_plane_state *state)
 {
 	struct rcar_du_plane_state *rstate = to_rcar_plane_state(state);
 	struct rcar_du_plane *rplane = to_rcar_plane(plane);
 	struct rcar_du_device *rcdu = rplane->group->dev;

 	if (!state->fb || !state->crtc) {
 		rstate->format = NULL;
 		return 0;
 	}

 	if (state->src_w >> 16 != state->crtc_w ||
 	    state->src_h >> 16 != state->crtc_h) {
 		dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
 		return -EINVAL;
 	}

 	rstate->format = rcar_du_format_info(state->fb->pixel_format);
 	if (rstate->format == NULL) {
 		dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
 			state->fb->pixel_format);
 		return -EINVAL;
 	}

 	return 0;
 }

 static void rcar_du_plane_atomic_update(struct drm_plane *plane,
 					struct drm_plane_state *old_state)
 {
 	struct rcar_du_plane *rplane = to_rcar_plane(plane);

 	if (plane->state->crtc)
 		rcar_du_plane_setup(rplane);
 }

 static const struct drm_plane_helper_funcs rcar_du_plane_helper_funcs = {
 	.atomic_check = rcar_du_plane_atomic_check,
 	.atomic_update = rcar_du_plane_atomic_update,
 };

 static void rcar_du_plane_reset(struct drm_plane *plane)
 {
 	struct rcar_du_plane_state *state;

 	if (plane->state && plane->state->fb)
 		drm_framebuffer_unreference(plane->state->fb);

 	kfree(plane->state);
 	plane->state = NULL;

 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return;

 	state->hwindex = -1;
 	state->alpha = 255;
 	state->colorkey = RCAR_DU_COLORKEY_NONE;
 	state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;

 	plane->state = &state->state;
 	plane->state->plane = plane;
 }

 static struct drm_plane_state *
 rcar_du_plane_atomic_duplicate_state(struct drm_plane *plane)
 {
 	struct rcar_du_plane_state *state;
 	struct rcar_du_plane_state *copy;

 	if (WARN_ON(!plane->state))
 		return NULL;

 	state = to_rcar_plane_state(plane->state);
 	copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
 	if (copy == NULL)
 		return NULL;

 	__drm_atomic_helper_plane_duplicate_state(plane, &copy->state);

 	return &copy->state;
 }

 static void rcar_du_plane_atomic_destroy_state(struct drm_plane *plane,
 					       struct drm_plane_state *state)
 {
 	__drm_atomic_helper_plane_destroy_state(plane, state);
 	kfree(to_rcar_plane_state(state));
 }

 static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
 					     struct drm_plane_state *state,
 					     struct drm_property *property,
 					     uint64_t val)
 {
 	struct rcar_du_plane_state *rstate = to_rcar_plane_state(state);
 	struct rcar_du_device *rcdu = to_rcar_plane(plane)->group->dev;

 	if (property == rcdu->props.alpha)
 		rstate->alpha = val;
 	else if (property == rcdu->props.colorkey)
 		rstate->colorkey = val;
 	else if (property == rcdu->props.zpos)
 		rstate->zpos = val;
 	else
 		return -EINVAL;

 	return 0;
 }

 static int rcar_du_plane_atomic_get_property(struct drm_plane *plane,
 	const struct drm_plane_state *state, struct drm_property *property,
 	uint64_t *val)
 {
 	const struct rcar_du_plane_state *rstate =
 		container_of(state, const struct rcar_du_plane_state, state);
 	struct rcar_du_device *rcdu = to_rcar_plane(plane)->group->dev;

 	if (property == rcdu->props.alpha)
 		*val = rstate->alpha;
 	else if (property == rcdu->props.colorkey)
 		*val = rstate->colorkey;
 	else if (property == rcdu->props.zpos)
 		*val = rstate->zpos;
 	else
 		return -EINVAL;

 	return 0;
 }

 static const struct drm_plane_funcs rcar_du_plane_funcs = {
 	.update_plane = drm_atomic_helper_update_plane,
 	.disable_plane = drm_atomic_helper_disable_plane,
 	.reset = rcar_du_plane_reset,
 	.set_property = drm_atomic_helper_plane_set_property,
 	.destroy = drm_plane_cleanup,
 	.atomic_duplicate_state = rcar_du_plane_atomic_duplicate_state,
 	.atomic_destroy_state = rcar_du_plane_atomic_destroy_state,
 	.atomic_set_property = rcar_du_plane_atomic_set_property,
 	.atomic_get_property = rcar_du_plane_atomic_get_property,
 };

 static const uint32_t formats[] = {
 	DRM_FORMAT_RGB565,
 	DRM_FORMAT_ARGB1555,
 	DRM_FORMAT_XRGB1555,
 	DRM_FORMAT_XRGB8888,
 	DRM_FORMAT_ARGB8888,
 	DRM_FORMAT_UYVY,
 	DRM_FORMAT_YUYV,
 	DRM_FORMAT_NV12,
 	DRM_FORMAT_NV21,
 	DRM_FORMAT_NV16,
 };

 int rcar_du_planes_init(struct rcar_du_group *rgrp)
 {
 	struct rcar_du_device *rcdu = rgrp->dev;
 	unsigned int crtcs;
 	unsigned int i;
 	int ret;

 	 /* Create one primary plane per CRTC in this group and seven overlay
 	  * planes.
 	  */
 	rgrp->num_planes = rgrp->num_crtcs + 7;

 	crtcs = ((1 << rcdu->num_crtcs) - 1) & (3 << (2 * rgrp->index));

 	for (i = 0; i < rgrp->num_planes; ++i) {
 		enum drm_plane_type type = i < rgrp->num_crtcs
 					 ? DRM_PLANE_TYPE_PRIMARY
 					 : DRM_PLANE_TYPE_OVERLAY;
 		struct rcar_du_plane *plane = &rgrp->planes[i];

 		plane->group = rgrp;

 		ret = drm_universal_plane_init(rcdu->ddev, &plane->plane, crtcs,
 					       &rcar_du_plane_funcs, formats,
 					       ARRAY_SIZE(formats), type);
 		if (ret < 0)
 			return ret;

 		drm_plane_helper_add(&plane->plane,
 				     &rcar_du_plane_helper_funcs);

 		if (type == DRM_PLANE_TYPE_PRIMARY)
 			continue;

 		drm_object_attach_property(&plane->plane.base,
 					   rcdu->props.alpha, 255);
 		drm_object_attach_property(&plane->plane.base,
 					   rcdu->props.colorkey,
 					   RCAR_DU_COLORKEY_NONE);
 		drm_object_attach_property(&plane->plane.base,
 					   rcdu->props.zpos, 1);
 	}

 	return 0;
 }
	/*
	* rcar_du_plane.c -- R-Car Display Unit Planes
	*
	* 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 <drm/drmP.h>
	#include <drm/drm_atomic_helper.h>
	#include <drm/drm_crtc.h>
	#include <drm/drm_crtc_helper.h>
	#include <drm/drm_fb_cma_helper.h>
	#include <drm/drm_gem_cma_helper.h>
	#include <drm/drm_plane_helper.h>

	#include "rcar_du_drv.h"
	#include "rcar_du_kms.h"
	#include "rcar_du_plane.h"
	#include "rcar_du_regs.h"

	#define RCAR_DU_COLORKEY_NONE (0 << 24)
	#define RCAR_DU_COLORKEY_SOURCE (1 << 24)
	#define RCAR_DU_COLORKEY_MASK (1 << 24)

	static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
	unsigned int index, u32 reg)
	{
	return rcar_du_read(rgrp->dev,
	rgrp->mmio_offset + index * PLANE_OFF + reg);
	}

	static void rcar_du_plane_write(struct rcar_du_group *rgrp,
	unsigned int index, u32 reg, u32 data)
	{
	rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
	data);
	}

	static void rcar_du_plane_setup_fb(struct rcar_du_plane *plane)
	{
	struct rcar_du_plane_state *state =
	to_rcar_plane_state(plane->plane.state);
	struct drm_framebuffer *fb = plane->plane.state->fb;
	struct rcar_du_group *rgrp = plane->group;
	unsigned int src_x = state->state.src_x >> 16;
	unsigned int src_y = state->state.src_y >> 16;
	unsigned int index = state->hwindex;
	struct drm_gem_cma_object *gem;
	bool interlaced;
	u32 mwr;

	interlaced = state->state.crtc->state->adjusted_mode.flags
	& DRM_MODE_FLAG_INTERLACE;

	/* Memory pitch (expressed in pixels). Must be doubled for interlaced
	* operation with 32bpp formats.
	*/
	if (state->format->planes == 2)
	mwr = fb->pitches[0];
	else
	mwr = fb->pitches[0] * 8 / state->format->bpp;

	if (interlaced && state->format->bpp == 32)
	mwr *= 2;

	rcar_du_plane_write(rgrp, index, PnMWR, mwr);

	/* The Y position is expressed in raster line units and must be doubled
	* for 32bpp formats, according to the R8A7790 datasheet. No mention of
	* doubling the Y position is found in the R8A7779 datasheet, but the
	* rule seems to apply there as well.
	*
	* Despite not being documented, doubling seem not to be needed when
	* operating in interlaced mode.
	*
	* Similarly, for the second plane, NV12 and NV21 formats seem to
	* require a halved Y position value, in both progressive and interlaced
	* modes.
	*/
	rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
	rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
	(!interlaced && state->format->bpp == 32 ? 2 : 1));

	gem = drm_fb_cma_get_gem_obj(fb, 0);
	rcar_du_plane_write(rgrp, index, PnDSA0R, gem->paddr + fb->offsets[0]);

	if (state->format->planes == 2) {
	index = (index + 1) % 8;

	rcar_du_plane_write(rgrp, index, PnMWR, fb->pitches[0]);

	rcar_du_plane_write(rgrp, index, PnSPXR, src_x);
	rcar_du_plane_write(rgrp, index, PnSPYR, src_y *
	(state->format->bpp == 16 ? 2 : 1) / 2);

	gem = drm_fb_cma_get_gem_obj(fb, 1);
	rcar_du_plane_write(rgrp, index, PnDSA0R,
	gem->paddr + fb->offsets[1]);
	}
	}

	static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
	unsigned int index)
	{
	struct rcar_du_plane_state *state =
	to_rcar_plane_state(plane->plane.state);
	struct rcar_du_group *rgrp = plane->group;
	u32 colorkey;
	u32 pnmr;

	/* The PnALPHAR register controls alpha-blending in 16bpp formats
	* (ARGB1555 and XRGB1555).
	*
	* For ARGB, set the alpha value to 0, and enable alpha-blending when
	* the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
	*
	* For XRGB, set the alpha value to the plane-wide alpha value and
	* enable alpha-blending regardless of the X bit value.
	*/
	if (state->format->fourcc != DRM_FORMAT_XRGB1555)
	rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
	else
	rcar_du_plane_write(rgrp, index, PnALPHAR,
	PnALPHAR_ABIT_X \| state->alpha);

	pnmr = PnMR_BM_MD \| state->format->pnmr;

	/* Disable color keying when requested. YUV formats have the
	* PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
	* automatically.
	*/
	if ((state->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
	pnmr \|= PnMR_SPIM_TP_OFF;

	/* For packed YUV formats we need to select the U/V order. */
	if (state->format->fourcc == DRM_FORMAT_YUYV)
	pnmr \|= PnMR_YCDF_YUYV;

	rcar_du_plane_write(rgrp, index, PnMR, pnmr);

	switch (state->format->fourcc) {
	case DRM_FORMAT_RGB565:
	colorkey = ((state->colorkey & 0xf80000) >> 8)
	\| ((state->colorkey & 0x00fc00) >> 5)
	\| ((state->colorkey & 0x0000f8) >> 3);
	rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
	break;

	case DRM_FORMAT_ARGB1555:
	case DRM_FORMAT_XRGB1555:
	colorkey = ((state->colorkey & 0xf80000) >> 9)
	\| ((state->colorkey & 0x00f800) >> 6)
	\| ((state->colorkey & 0x0000f8) >> 3);
	rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
	break;

	case DRM_FORMAT_XRGB8888:
	case DRM_FORMAT_ARGB8888:
	rcar_du_plane_write(rgrp, index, PnTC3R,
	PnTC3R_CODE \| (state->colorkey & 0xffffff));
	break;
	}
	}

	static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
	unsigned int index)
	{
	struct rcar_du_plane_state *state =
	to_rcar_plane_state(plane->plane.state);
	struct rcar_du_group *rgrp = plane->group;
	u32 ddcr2 = PnDDCR2_CODE;
	u32 ddcr4;

	/* Data format
	*
	* The data format is selected by the DDDF field in PnMR and the EDF
	* field in DDCR4.
	*/
	ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
	ddcr4 &= ~PnDDCR4_EDF_MASK;
	ddcr4 \|= state->format->edf \| PnDDCR4_CODE;

	rcar_du_plane_setup_mode(plane, index);

	if (state->format->planes == 2) {
	if (state->hwindex != index) {
	if (state->format->fourcc == DRM_FORMAT_NV12 \|\|
	state->format->fourcc == DRM_FORMAT_NV21)
	ddcr2 \|= PnDDCR2_Y420;

	if (state->format->fourcc == DRM_FORMAT_NV21)
	ddcr2 \|= PnDDCR2_NV21;

	ddcr2 \|= PnDDCR2_DIVU;
	} else {
	ddcr2 \|= PnDDCR2_DIVY;
	}
	}

	rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
	rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);

	/* Destination position and size */
	rcar_du_plane_write(rgrp, index, PnDSXR, plane->plane.state->crtc_w);
	rcar_du_plane_write(rgrp, index, PnDSYR, plane->plane.state->crtc_h);
	rcar_du_plane_write(rgrp, index, PnDPXR, plane->plane.state->crtc_x);
	rcar_du_plane_write(rgrp, index, PnDPYR, plane->plane.state->crtc_y);

	/* Wrap-around and blinking, disabled */
	rcar_du_plane_write(rgrp, index, PnWASPR, 0);
	rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
	rcar_du_plane_write(rgrp, index, PnBTR, 0);
	rcar_du_plane_write(rgrp, index, PnMLR, 0);
	}

	void rcar_du_plane_setup(struct rcar_du_plane *plane)
	{
	struct rcar_du_plane_state *state =
	to_rcar_plane_state(plane->plane.state);

	__rcar_du_plane_setup(plane, state->hwindex);
	if (state->format->planes == 2)
	__rcar_du_plane_setup(plane, (state->hwindex + 1) % 8);

	rcar_du_plane_setup_fb(plane);
	}

	static int rcar_du_plane_atomic_check(struct drm_plane *plane,
	struct drm_plane_state *state)
	{
	struct rcar_du_plane_state *rstate = to_rcar_plane_state(state);
	struct rcar_du_plane *rplane = to_rcar_plane(plane);
	struct rcar_du_device *rcdu = rplane->group->dev;

	if (!state->fb \|\| !state->crtc) {
	rstate->format = NULL;
	return 0;
	}

	if (state->src_w >> 16 != state->crtc_w \|\|
	state->src_h >> 16 != state->crtc_h) {
	dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
	return -EINVAL;
	}

	rstate->format = rcar_du_format_info(state->fb->pixel_format);
	if (rstate->format == NULL) {
	dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
	state->fb->pixel_format);
	return -EINVAL;
	}

	return 0;
	}

	static void rcar_du_plane_atomic_update(struct drm_plane *plane,
	struct drm_plane_state *old_state)
	{
	struct rcar_du_plane *rplane = to_rcar_plane(plane);

	if (plane->state->crtc)
	rcar_du_plane_setup(rplane);
	}

	static const struct drm_plane_helper_funcs rcar_du_plane_helper_funcs = {
	.atomic_check = rcar_du_plane_atomic_check,
	.atomic_update = rcar_du_plane_atomic_update,
	};

	static void rcar_du_plane_reset(struct drm_plane *plane)
	{
	struct rcar_du_plane_state *state;

	if (plane->state && plane->state->fb)
	drm_framebuffer_unreference(plane->state->fb);

	kfree(plane->state);
	plane->state = NULL;

	state = kzalloc(sizeof(*state), GFP_KERNEL);
	if (state == NULL)
	return;

	state->hwindex = -1;
	state->alpha = 255;
	state->colorkey = RCAR_DU_COLORKEY_NONE;
	state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;

	plane->state = &state->state;
	plane->state->plane = plane;
	}

	static struct drm_plane_state *
	rcar_du_plane_atomic_duplicate_state(struct drm_plane *plane)
	{
	struct rcar_du_plane_state *state;
	struct rcar_du_plane_state *copy;

	if (WARN_ON(!plane->state))
	return NULL;

	state = to_rcar_plane_state(plane->state);
	copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
	if (copy == NULL)
	return NULL;

	__drm_atomic_helper_plane_duplicate_state(plane, &copy->state);

	return &copy->state;
	}

	static void rcar_du_plane_atomic_destroy_state(struct drm_plane *plane,
	struct drm_plane_state *state)
	{
	__drm_atomic_helper_plane_destroy_state(plane, state);
	kfree(to_rcar_plane_state(state));
	}

	static int rcar_du_plane_atomic_set_property(struct drm_plane *plane,
	struct drm_plane_state *state,
	struct drm_property *property,
	uint64_t val)
	{
	struct rcar_du_plane_state *rstate = to_rcar_plane_state(state);
	struct rcar_du_device *rcdu = to_rcar_plane(plane)->group->dev;

	if (property == rcdu->props.alpha)
	rstate->alpha = val;
	else if (property == rcdu->props.colorkey)
	rstate->colorkey = val;
	else if (property == rcdu->props.zpos)
	rstate->zpos = val;
	else
	return -EINVAL;

	return 0;
	}

	static int rcar_du_plane_atomic_get_property(struct drm_plane *plane,
	const struct drm_plane_state state, struct drm_property property,
	uint64_t *val)
	{
	const struct rcar_du_plane_state *rstate =
	container_of(state, const struct rcar_du_plane_state, state);
	struct rcar_du_device *rcdu = to_rcar_plane(plane)->group->dev;

	if (property == rcdu->props.alpha)
	*val = rstate->alpha;
	else if (property == rcdu->props.colorkey)
	*val = rstate->colorkey;
	else if (property == rcdu->props.zpos)
	*val = rstate->zpos;
	else
	return -EINVAL;

	return 0;
	}

	static const struct drm_plane_funcs rcar_du_plane_funcs = {
	.update_plane = drm_atomic_helper_update_plane,
	.disable_plane = drm_atomic_helper_disable_plane,
	.reset = rcar_du_plane_reset,
	.set_property = drm_atomic_helper_plane_set_property,
	.destroy = drm_plane_cleanup,
	.atomic_duplicate_state = rcar_du_plane_atomic_duplicate_state,
	.atomic_destroy_state = rcar_du_plane_atomic_destroy_state,
	.atomic_set_property = rcar_du_plane_atomic_set_property,
	.atomic_get_property = rcar_du_plane_atomic_get_property,
	};

	static const uint32_t formats[] = {
	DRM_FORMAT_RGB565,
	DRM_FORMAT_ARGB1555,
	DRM_FORMAT_XRGB1555,
	DRM_FORMAT_XRGB8888,
	DRM_FORMAT_ARGB8888,
	DRM_FORMAT_UYVY,
	DRM_FORMAT_YUYV,
	DRM_FORMAT_NV12,
	DRM_FORMAT_NV21,
	DRM_FORMAT_NV16,
	};

	int rcar_du_planes_init(struct rcar_du_group *rgrp)
	{
	struct rcar_du_device *rcdu = rgrp->dev;
	unsigned int crtcs;
	unsigned int i;
	int ret;

	/* Create one primary plane per CRTC in this group and seven overlay
	* planes.
	*/
	rgrp->num_planes = rgrp->num_crtcs + 7;

	crtcs = ((1 << rcdu->num_crtcs) - 1) & (3 << (2 * rgrp->index));

	for (i = 0; i < rgrp->num_planes; ++i) {
	enum drm_plane_type type = i < rgrp->num_crtcs
	? DRM_PLANE_TYPE_PRIMARY
	: DRM_PLANE_TYPE_OVERLAY;
	struct rcar_du_plane *plane = &rgrp->planes[i];

	plane->group = rgrp;

	ret = drm_universal_plane_init(rcdu->ddev, &plane->plane, crtcs,
	&rcar_du_plane_funcs, formats,
	ARRAY_SIZE(formats), type);
	if (ret < 0)
	return ret;

	drm_plane_helper_add(&plane->plane,
	&rcar_du_plane_helper_funcs);

	if (type == DRM_PLANE_TYPE_PRIMARY)
	continue;

	drm_object_attach_property(&plane->plane.base,
	rcdu->props.alpha, 255);
	drm_object_attach_property(&plane->plane.base,
	rcdu->props.colorkey,
	RCAR_DU_COLORKEY_NONE);
	drm_object_attach_property(&plane->plane.base,
	rcdu->props.zpos, 1);
	}

	return 0;
	}