[deliverable/linux.git] / drivers / gpu / drm / rcar-du / rcar_du_plane.c

/*
 * 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_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_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)

struct rcar_du_kms_plane {
	struct drm_plane plane;
	struct rcar_du_plane *hwplane;
};

static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
{
	return container_of(plane, struct rcar_du_kms_plane, plane)->hwplane;
}

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);
}

int rcar_du_plane_reserve(struct rcar_du_plane *plane,
			  const struct rcar_du_format_info *format)
{
	struct rcar_du_group *rgrp = plane->group;
	unsigned int i;
	int ret = -EBUSY;

	mutex_lock(&rgrp->planes.lock);

	for (i = 0; i < ARRAY_SIZE(rgrp->planes.planes); ++i) {
		if (!(rgrp->planes.free & (1 << i)))
			continue;

		if (format->planes == 1 ||
		    rgrp->planes.free & (1 << ((i + 1) % 8)))
			break;
	}

	if (i == ARRAY_SIZE(rgrp->planes.planes))
		goto done;

	rgrp->planes.free &= ~(1 << i);
	if (format->planes == 2)
		rgrp->planes.free &= ~(1 << ((i + 1) % 8));

	plane->hwindex = i;

	ret = 0;

done:
	mutex_unlock(&rgrp->planes.lock);
	return ret;
}

void rcar_du_plane_release(struct rcar_du_plane *plane)
{
	struct rcar_du_group *rgrp = plane->group;

	if (plane->hwindex == -1)
		return;

	mutex_lock(&rgrp->planes.lock);
	rgrp->planes.free |= 1 << plane->hwindex;
	if (plane->format->planes == 2)
		rgrp->planes.free |= 1 << ((plane->hwindex + 1) % 8);
	mutex_unlock(&rgrp->planes.lock);

	plane->hwindex = -1;
}

void rcar_du_plane_update_base(struct rcar_du_plane *plane)
{
	struct rcar_du_group *rgrp = plane->group;
	unsigned int index = plane->hwindex;
	u32 mwr;

	/* Memory pitch (expressed in pixels) */
	if (plane->format->planes == 2)
		mwr = plane->pitch;
	else
		mwr = plane->pitch * 8 / plane->format->bpp;

	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.
	 *
	 * Similarly, for the second plane, NV12 and NV21 formats seem to
	 * require a halved Y position value.
	 */
	rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
	rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
			    (plane->format->bpp == 32 ? 2 : 1));
	rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]);

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

		rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
		rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
				    (plane->format->bpp == 16 ? 2 : 1) / 2);
		rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[1]);
	}
}

void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
				struct drm_framebuffer *fb)
{
	struct drm_gem_cma_object *gem;

	plane->pitch = fb->pitches[0];

	gem = drm_fb_cma_get_gem_obj(fb, 0);
	plane->dma[0] = gem->paddr + fb->offsets[0];

	if (plane->format->planes == 2) {
		gem = drm_fb_cma_get_gem_obj(fb, 1);
		plane->dma[1] = gem->paddr + fb->offsets[1];
	}
}

static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
				     unsigned int index)
{
	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 (plane->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 | plane->alpha);

	pnmr = PnMR_BM_MD | plane->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 ((plane->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 (plane->format->fourcc == DRM_FORMAT_YUYV)
		pnmr |= PnMR_YCDF_YUYV;

	rcar_du_plane_write(rgrp, index, PnMR, pnmr);

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

	case DRM_FORMAT_ARGB1555:
	case DRM_FORMAT_XRGB1555:
		colorkey = ((plane->colorkey & 0xf80000) >> 9)
			 | ((plane->colorkey & 0x00f800) >> 6)
			 | ((plane->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 | (plane->colorkey & 0xffffff));
		break;
	}
}

static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
				  unsigned int index)
{
	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 |= plane->format->edf | PnDDCR4_CODE;

	rcar_du_plane_setup_mode(plane, index);

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

			if (plane->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->width);
	rcar_du_plane_write(rgrp, index, PnDSYR, plane->height);
	rcar_du_plane_write(rgrp, index, PnDPXR, plane->dst_x);
	rcar_du_plane_write(rgrp, index, PnDPYR, plane->dst_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)
{
	__rcar_du_plane_setup(plane, plane->hwindex);
	if (plane->format->planes == 2)
		__rcar_du_plane_setup(plane, (plane->hwindex + 1) % 8);

	rcar_du_plane_update_base(plane);
}

static int
rcar_du_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
		       struct drm_framebuffer *fb, int crtc_x, int crtc_y,
		       unsigned int crtc_w, unsigned int crtc_h,
		       uint32_t src_x, uint32_t src_y,
		       uint32_t src_w, uint32_t src_h)
{
	struct rcar_du_plane *rplane = to_rcar_plane(plane);
	struct rcar_du_device *rcdu = rplane->group->dev;
	const struct rcar_du_format_info *format;
	unsigned int nplanes;
	int ret;

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

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

	nplanes = rplane->format ? rplane->format->planes : 0;

	/* Reallocate hardware planes if the number of required planes has
	 * changed.
	 */
	if (format->planes != nplanes) {
		rcar_du_plane_release(rplane);
		ret = rcar_du_plane_reserve(rplane, format);
		if (ret < 0)
			return ret;
	}

	rplane->crtc = crtc;
	rplane->format = format;

	rplane->src_x = src_x >> 16;
	rplane->src_y = src_y >> 16;
	rplane->dst_x = crtc_x;
	rplane->dst_y = crtc_y;
	rplane->width = crtc_w;
	rplane->height = crtc_h;

	rcar_du_plane_compute_base(rplane, fb);
	rcar_du_plane_setup(rplane);

	mutex_lock(&rplane->group->planes.lock);
	rplane->enabled = true;
	rcar_du_crtc_update_planes(rplane->crtc);
	mutex_unlock(&rplane->group->planes.lock);

	return 0;
}

static int rcar_du_plane_disable(struct drm_plane *plane)
{
	struct rcar_du_plane *rplane = to_rcar_plane(plane);

	if (!rplane->enabled)
		return 0;

	mutex_lock(&rplane->group->planes.lock);
	rplane->enabled = false;
	rcar_du_crtc_update_planes(rplane->crtc);
	mutex_unlock(&rplane->group->planes.lock);

	rcar_du_plane_release(rplane);

	rplane->crtc = NULL;
	rplane->format = NULL;

	return 0;
}

/* Both the .set_property and the .update_plane operations are called with the
 * mode_config lock held. There is this no need to explicitly protect access to
 * the alpha and colorkey fields and the mode register.
 */
static void rcar_du_plane_set_alpha(struct rcar_du_plane *plane, u32 alpha)
{
	if (plane->alpha == alpha)
		return;

	plane->alpha = alpha;
	if (!plane->enabled || plane->format->fourcc != DRM_FORMAT_XRGB1555)
		return;

	rcar_du_plane_setup_mode(plane, plane->hwindex);
}

static void rcar_du_plane_set_colorkey(struct rcar_du_plane *plane,
				       u32 colorkey)
{
	if (plane->colorkey == colorkey)
		return;

	plane->colorkey = colorkey;
	if (!plane->enabled)
		return;

	rcar_du_plane_setup_mode(plane, plane->hwindex);
}

static void rcar_du_plane_set_zpos(struct rcar_du_plane *plane,
				   unsigned int zpos)
{
	mutex_lock(&plane->group->planes.lock);
	if (plane->zpos == zpos)
		goto done;

	plane->zpos = zpos;
	if (!plane->enabled)
		goto done;

	rcar_du_crtc_update_planes(plane->crtc);

done:
	mutex_unlock(&plane->group->planes.lock);
}

static int rcar_du_plane_set_property(struct drm_plane *plane,
				      struct drm_property *property,
				      uint64_t value)
{
	struct rcar_du_plane *rplane = to_rcar_plane(plane);
	struct rcar_du_group *rgrp = rplane->group;

	if (property == rgrp->planes.alpha)
		rcar_du_plane_set_alpha(rplane, value);
	else if (property == rgrp->planes.colorkey)
		rcar_du_plane_set_colorkey(rplane, value);
	else if (property == rgrp->planes.zpos)
		rcar_du_plane_set_zpos(rplane, value);
	else
		return -EINVAL;

	return 0;
}

static const struct drm_plane_funcs rcar_du_plane_funcs = {
	.update_plane = rcar_du_plane_update,
	.disable_plane = rcar_du_plane_disable,
	.set_property = rcar_du_plane_set_property,
	.destroy = drm_plane_cleanup,
};

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_planes *planes = &rgrp->planes;
	struct rcar_du_device *rcdu = rgrp->dev;
	unsigned int i;

	mutex_init(&planes->lock);
	planes->free = 0xff;

	planes->alpha =
		drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
	if (planes->alpha == NULL)
		return -ENOMEM;

	/* The color key is expressed as an RGB888 triplet stored in a 32-bit
	 * integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
	 * or enable source color keying (1).
	 */
	planes->colorkey =
		drm_property_create_range(rcdu->ddev, 0, "colorkey",
					  0, 0x01ffffff);
	if (planes->colorkey == NULL)
		return -ENOMEM;

	planes->zpos =
		drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
	if (planes->zpos == NULL)
		return -ENOMEM;

	for (i = 0; i < ARRAY_SIZE(planes->planes); ++i) {
		struct rcar_du_plane *plane = &planes->planes[i];

		plane->group = rgrp;
		plane->hwindex = -1;
		plane->alpha = 255;
		plane->colorkey = RCAR_DU_COLORKEY_NONE;
		plane->zpos = 0;
	}

	return 0;
}

int rcar_du_planes_register(struct rcar_du_group *rgrp)
{
	struct rcar_du_planes *planes = &rgrp->planes;
	struct rcar_du_device *rcdu = rgrp->dev;
	unsigned int crtcs;
	unsigned int i;
	int ret;

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

	for (i = 0; i < RCAR_DU_NUM_KMS_PLANES; ++i) {
		struct rcar_du_kms_plane *plane;

		plane = devm_kzalloc(rcdu->dev, sizeof(*plane), GFP_KERNEL);
		if (plane == NULL)
			return -ENOMEM;

		plane->hwplane = &planes->planes[i + 2];
		plane->hwplane->zpos = 1;

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

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

	return 0;
}
Commit	Line	Data
4bf8e196 LP	1	/*
	2	* rcar_du_plane.c -- R-Car Display Unit Planes
	3	*
36d50464	4	* Copyright (C) 2013-2014 Renesas Electronics Corporation
4bf8e196 LP	5	*
	6	* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*/
	13
	14	#include <drm/drmP.h>
	15	#include <drm/drm_crtc.h>
	16	#include <drm/drm_crtc_helper.h>
	17	#include <drm/drm_fb_cma_helper.h>
	18	#include <drm/drm_gem_cma_helper.h>
	19
	20	#include "rcar_du_drv.h"
	21	#include "rcar_du_kms.h"
	22	#include "rcar_du_plane.h"
	23	#include "rcar_du_regs.h"
	24
	25	#define RCAR_DU_COLORKEY_NONE (0 << 24)
	26	#define RCAR_DU_COLORKEY_SOURCE (1 << 24)
	27	#define RCAR_DU_COLORKEY_MASK (1 << 24)
	28
	29	struct rcar_du_kms_plane {
	30	struct drm_plane plane;
	31	struct rcar_du_plane *hwplane;
	32	};
	33
	34	static inline struct rcar_du_plane to_rcar_plane(struct drm_plane plane)
	35	{
	36	return container_of(plane, struct rcar_du_kms_plane, plane)->hwplane;
	37	}
	38
cb2025d2	39	static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
4bf8e196 LP	40	unsigned int index, u32 reg)
4bf8e196 LP	41	{
cb2025d2 LP	42	return rcar_du_read(rgrp->dev,
cb2025d2 LP	43	rgrp->mmio_offset + index * PLANE_OFF + reg);
4bf8e196 LP	44	}
4bf8e196 LP	45
cb2025d2	46	static void rcar_du_plane_write(struct rcar_du_group *rgrp,
4bf8e196 LP	47	unsigned int index, u32 reg, u32 data)
4bf8e196 LP	48	{
cb2025d2 LP	49	rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
cb2025d2 LP	50	data);
4bf8e196 LP	51	}
	52
	53	int rcar_du_plane_reserve(struct rcar_du_plane *plane,
	54	const struct rcar_du_format_info *format)
	55	{
cb2025d2	56	struct rcar_du_group *rgrp = plane->group;
4bf8e196 LP	57	unsigned int i;
	58	int ret = -EBUSY;
	59
cb2025d2	60	mutex_lock(&rgrp->planes.lock);
4bf8e196	61
cb2025d2 LP	62	for (i = 0; i < ARRAY_SIZE(rgrp->planes.planes); ++i) {
cb2025d2 LP	63	if (!(rgrp->planes.free & (1 << i)))
4bf8e196 LP	64	continue;
	65
	66	if (format->planes == 1 \|\|
cb2025d2	67	rgrp->planes.free & (1 << ((i + 1) % 8)))
4bf8e196 LP	68	break;
	69	}
	70
cb2025d2	71	if (i == ARRAY_SIZE(rgrp->planes.planes))
4bf8e196 LP	72	goto done;
4bf8e196 LP	73
cb2025d2	74	rgrp->planes.free &= ~(1 << i);
4bf8e196	75	if (format->planes == 2)
cb2025d2	76	rgrp->planes.free &= ~(1 << ((i + 1) % 8));
4bf8e196 LP	77
	78	plane->hwindex = i;
	79
	80	ret = 0;
	81
	82	done:
cb2025d2	83	mutex_unlock(&rgrp->planes.lock);
4bf8e196 LP	84	return ret;
	85	}
	86
	87	void rcar_du_plane_release(struct rcar_du_plane *plane)
	88	{
cb2025d2	89	struct rcar_du_group *rgrp = plane->group;
4bf8e196 LP	90
	91	if (plane->hwindex == -1)
	92	return;
	93
cb2025d2 LP	94	mutex_lock(&rgrp->planes.lock);
cb2025d2 LP	95	rgrp->planes.free \|= 1 << plane->hwindex;
4bf8e196	96	if (plane->format->planes == 2)
cb2025d2 LP	97	rgrp->planes.free \|= 1 << ((plane->hwindex + 1) % 8);
cb2025d2 LP	98	mutex_unlock(&rgrp->planes.lock);
4bf8e196 LP	99
	100	plane->hwindex = -1;
	101	}
	102
	103	void rcar_du_plane_update_base(struct rcar_du_plane *plane)
	104	{
cb2025d2	105	struct rcar_du_group *rgrp = plane->group;
4bf8e196	106	unsigned int index = plane->hwindex;
eb86301f LP	107	u32 mwr;
	108
	109	/* Memory pitch (expressed in pixels) */
	110	if (plane->format->planes == 2)
	111	mwr = plane->pitch;
	112	else
	113	mwr = plane->pitch * 8 / plane->format->bpp;
	114
	115	rcar_du_plane_write(rgrp, index, PnMWR, mwr);
4bf8e196	116
9e7db06d LP	117	/* The Y position is expressed in raster line units and must be doubled
	118	* for 32bpp formats, according to the R8A7790 datasheet. No mention of
	119	* doubling the Y position is found in the R8A7779 datasheet, but the
	120	* rule seems to apply there as well.
	121	*
	122	* Similarly, for the second plane, NV12 and NV21 formats seem to
4bf8e196 LP	123	* require a halved Y position value.
4bf8e196 LP	124	*/
cb2025d2 LP	125	rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
cb2025d2 LP	126	rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
4bf8e196	127	(plane->format->bpp == 32 ? 2 : 1));
cb2025d2	128	rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]);
4bf8e196 LP	129
	130	if (plane->format->planes == 2) {
	131	index = (index + 1) % 8;
	132
cb2025d2 LP	133	rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
cb2025d2 LP	134	rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
4bf8e196	135	(plane->format->bpp == 16 ? 2 : 1) / 2);
cb2025d2	136	rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[1]);
4bf8e196 LP	137	}
	138	}
	139
	140	void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
	141	struct drm_framebuffer *fb)
	142	{
	143	struct drm_gem_cma_object *gem;
	144
eb86301f LP	145	plane->pitch = fb->pitches[0];
eb86301f LP	146
4bf8e196 LP	147	gem = drm_fb_cma_get_gem_obj(fb, 0);
	148	plane->dma[0] = gem->paddr + fb->offsets[0];
	149
	150	if (plane->format->planes == 2) {
	151	gem = drm_fb_cma_get_gem_obj(fb, 1);
	152	plane->dma[1] = gem->paddr + fb->offsets[1];
	153	}
	154	}
	155
	156	static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
	157	unsigned int index)
	158	{
cb2025d2	159	struct rcar_du_group *rgrp = plane->group;
4bf8e196 LP	160	u32 colorkey;
	161	u32 pnmr;
	162
	163	/* The PnALPHAR register controls alpha-blending in 16bpp formats
	164	* (ARGB1555 and XRGB1555).
	165	*
	166	* For ARGB, set the alpha value to 0, and enable alpha-blending when
	167	* the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
	168	*
	169	* For XRGB, set the alpha value to the plane-wide alpha value and
	170	* enable alpha-blending regardless of the X bit value.
	171	*/
	172	if (plane->format->fourcc != DRM_FORMAT_XRGB1555)
cb2025d2	173	rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
4bf8e196	174	else
cb2025d2	175	rcar_du_plane_write(rgrp, index, PnALPHAR,
4bf8e196 LP	176	PnALPHAR_ABIT_X \| plane->alpha);
	177
	178	pnmr = PnMR_BM_MD \| plane->format->pnmr;
	179
	180	/* Disable color keying when requested. YUV formats have the
	181	* PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
	182	* automatically.
	183	*/
	184	if ((plane->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
	185	pnmr \|= PnMR_SPIM_TP_OFF;
	186
	187	/* For packed YUV formats we need to select the U/V order. */
	188	if (plane->format->fourcc == DRM_FORMAT_YUYV)
	189	pnmr \|= PnMR_YCDF_YUYV;
	190
cb2025d2	191	rcar_du_plane_write(rgrp, index, PnMR, pnmr);
4bf8e196 LP	192
	193	switch (plane->format->fourcc) {
	194	case DRM_FORMAT_RGB565:
	195	colorkey = ((plane->colorkey & 0xf80000) >> 8)
	196	\| ((plane->colorkey & 0x00fc00) >> 5)
	197	\| ((plane->colorkey & 0x0000f8) >> 3);
cb2025d2	198	rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
4bf8e196 LP	199	break;
	200
	201	case DRM_FORMAT_ARGB1555:
	202	case DRM_FORMAT_XRGB1555:
	203	colorkey = ((plane->colorkey & 0xf80000) >> 9)
	204	\| ((plane->colorkey & 0x00f800) >> 6)
	205	\| ((plane->colorkey & 0x0000f8) >> 3);
cb2025d2	206	rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
4bf8e196 LP	207	break;
	208
	209	case DRM_FORMAT_XRGB8888:
	210	case DRM_FORMAT_ARGB8888:
cb2025d2	211	rcar_du_plane_write(rgrp, index, PnTC3R,
4bf8e196 LP	212	PnTC3R_CODE \| (plane->colorkey & 0xffffff));
	213	break;
	214	}
	215	}
	216
	217	static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
	218	unsigned int index)
	219	{
cb2025d2	220	struct rcar_du_group *rgrp = plane->group;
4bf8e196 LP	221	u32 ddcr2 = PnDDCR2_CODE;
4bf8e196 LP	222	u32 ddcr4;
4bf8e196 LP	223
	224	/* Data format
	225	*
	226	* The data format is selected by the DDDF field in PnMR and the EDF
	227	* field in DDCR4.
	228	*/
cb2025d2	229	ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
4bf8e196 LP	230	ddcr4 &= ~PnDDCR4_EDF_MASK;
	231	ddcr4 \|= plane->format->edf \| PnDDCR4_CODE;
	232
	233	rcar_du_plane_setup_mode(plane, index);
	234
	235	if (plane->format->planes == 2) {
	236	if (plane->hwindex != index) {
	237	if (plane->format->fourcc == DRM_FORMAT_NV12 \|\|
	238	plane->format->fourcc == DRM_FORMAT_NV21)
	239	ddcr2 \|= PnDDCR2_Y420;
	240
	241	if (plane->format->fourcc == DRM_FORMAT_NV21)
	242	ddcr2 \|= PnDDCR2_NV21;
	243
	244	ddcr2 \|= PnDDCR2_DIVU;
	245	} else {
	246	ddcr2 \|= PnDDCR2_DIVY;
	247	}
	248	}
	249
cb2025d2 LP	250	rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
cb2025d2 LP	251	rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);
4bf8e196	252
4bf8e196	253	/* Destination position and size */
cb2025d2 LP	254	rcar_du_plane_write(rgrp, index, PnDSXR, plane->width);
	255	rcar_du_plane_write(rgrp, index, PnDSYR, plane->height);
	256	rcar_du_plane_write(rgrp, index, PnDPXR, plane->dst_x);
	257	rcar_du_plane_write(rgrp, index, PnDPYR, plane->dst_y);
4bf8e196 LP	258
4bf8e196 LP	259	/* Wrap-around and blinking, disabled */
cb2025d2 LP	260	rcar_du_plane_write(rgrp, index, PnWASPR, 0);
	261	rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
	262	rcar_du_plane_write(rgrp, index, PnBTR, 0);
	263	rcar_du_plane_write(rgrp, index, PnMLR, 0);
4bf8e196 LP	264	}
	265
	266	void rcar_du_plane_setup(struct rcar_du_plane *plane)
	267	{
	268	__rcar_du_plane_setup(plane, plane->hwindex);
	269	if (plane->format->planes == 2)
	270	__rcar_du_plane_setup(plane, (plane->hwindex + 1) % 8);
	271
	272	rcar_du_plane_update_base(plane);
	273	}
	274
	275	static int
	276	rcar_du_plane_update(struct drm_plane plane, struct drm_crtc crtc,
	277	struct drm_framebuffer *fb, int crtc_x, int crtc_y,
	278	unsigned int crtc_w, unsigned int crtc_h,
	279	uint32_t src_x, uint32_t src_y,
	280	uint32_t src_w, uint32_t src_h)
	281	{
	282	struct rcar_du_plane *rplane = to_rcar_plane(plane);
cb2025d2	283	struct rcar_du_device *rcdu = rplane->group->dev;
4bf8e196 LP	284	const struct rcar_du_format_info *format;
	285	unsigned int nplanes;
	286	int ret;
	287
	288	format = rcar_du_format_info(fb->pixel_format);
	289	if (format == NULL) {
	290	dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
	291	fb->pixel_format);
	292	return -EINVAL;
	293	}
	294
	295	if (src_w >> 16 != crtc_w \|\| src_h >> 16 != crtc_h) {
	296	dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
	297	return -EINVAL;
	298	}
	299
	300	nplanes = rplane->format ? rplane->format->planes : 0;
	301
	302	/* Reallocate hardware planes if the number of required planes has
	303	* changed.
	304	*/
	305	if (format->planes != nplanes) {
	306	rcar_du_plane_release(rplane);
	307	ret = rcar_du_plane_reserve(rplane, format);
	308	if (ret < 0)
	309	return ret;
	310	}
	311
	312	rplane->crtc = crtc;
	313	rplane->format = format;
4bf8e196 LP	314
	315	rplane->src_x = src_x >> 16;
	316	rplane->src_y = src_y >> 16;
	317	rplane->dst_x = crtc_x;
	318	rplane->dst_y = crtc_y;
	319	rplane->width = crtc_w;
	320	rplane->height = crtc_h;
	321
	322	rcar_du_plane_compute_base(rplane, fb);
	323	rcar_du_plane_setup(rplane);
	324
cb2025d2	325	mutex_lock(&rplane->group->planes.lock);
4bf8e196 LP	326	rplane->enabled = true;
4bf8e196 LP	327	rcar_du_crtc_update_planes(rplane->crtc);
cb2025d2	328	mutex_unlock(&rplane->group->planes.lock);
4bf8e196 LP	329
	330	return 0;
	331	}
	332
	333	static int rcar_du_plane_disable(struct drm_plane *plane)
	334	{
4bf8e196 LP	335	struct rcar_du_plane *rplane = to_rcar_plane(plane);
	336
	337	if (!rplane->enabled)
	338	return 0;
	339
cb2025d2	340	mutex_lock(&rplane->group->planes.lock);
4bf8e196 LP	341	rplane->enabled = false;
4bf8e196 LP	342	rcar_du_crtc_update_planes(rplane->crtc);
cb2025d2	343	mutex_unlock(&rplane->group->planes.lock);
4bf8e196 LP	344
	345	rcar_du_plane_release(rplane);
	346
	347	rplane->crtc = NULL;
	348	rplane->format = NULL;
	349
	350	return 0;
	351	}
	352
	353	/* Both the .set_property and the .update_plane operations are called with the
	354	* mode_config lock held. There is this no need to explicitly protect access to
	355	* the alpha and colorkey fields and the mode register.
	356	*/
	357	static void rcar_du_plane_set_alpha(struct rcar_du_plane *plane, u32 alpha)
	358	{
	359	if (plane->alpha == alpha)
	360	return;
	361
	362	plane->alpha = alpha;
	363	if (!plane->enabled \|\| plane->format->fourcc != DRM_FORMAT_XRGB1555)
	364	return;
	365
	366	rcar_du_plane_setup_mode(plane, plane->hwindex);
	367	}
	368
	369	static void rcar_du_plane_set_colorkey(struct rcar_du_plane *plane,
	370	u32 colorkey)
	371	{
	372	if (plane->colorkey == colorkey)
	373	return;
	374
	375	plane->colorkey = colorkey;
	376	if (!plane->enabled)
	377	return;
	378
	379	rcar_du_plane_setup_mode(plane, plane->hwindex);
	380	}
	381
	382	static void rcar_du_plane_set_zpos(struct rcar_du_plane *plane,
	383	unsigned int zpos)
	384	{
cb2025d2	385	mutex_lock(&plane->group->planes.lock);
4bf8e196 LP	386	if (plane->zpos == zpos)
	387	goto done;
	388
	389	plane->zpos = zpos;
	390	if (!plane->enabled)
	391	goto done;
	392
	393	rcar_du_crtc_update_planes(plane->crtc);
	394
	395	done:
cb2025d2	396	mutex_unlock(&plane->group->planes.lock);
4bf8e196 LP	397	}
	398
	399	static int rcar_du_plane_set_property(struct drm_plane *plane,
	400	struct drm_property *property,
	401	uint64_t value)
	402	{
4bf8e196	403	struct rcar_du_plane *rplane = to_rcar_plane(plane);
cb2025d2	404	struct rcar_du_group *rgrp = rplane->group;
4bf8e196	405
cb2025d2	406	if (property == rgrp->planes.alpha)
4bf8e196	407	rcar_du_plane_set_alpha(rplane, value);
cb2025d2	408	else if (property == rgrp->planes.colorkey)
4bf8e196	409	rcar_du_plane_set_colorkey(rplane, value);
cb2025d2	410	else if (property == rgrp->planes.zpos)
4bf8e196 LP	411	rcar_du_plane_set_zpos(rplane, value);
	412	else
	413	return -EINVAL;
	414
	415	return 0;
	416	}
	417
	418	static const struct drm_plane_funcs rcar_du_plane_funcs = {
	419	.update_plane = rcar_du_plane_update,
	420	.disable_plane = rcar_du_plane_disable,
	421	.set_property = rcar_du_plane_set_property,
	422	.destroy = drm_plane_cleanup,
	423	};
	424
	425	static const uint32_t formats[] = {
	426	DRM_FORMAT_RGB565,
	427	DRM_FORMAT_ARGB1555,
	428	DRM_FORMAT_XRGB1555,
	429	DRM_FORMAT_XRGB8888,
	430	DRM_FORMAT_ARGB8888,
	431	DRM_FORMAT_UYVY,
	432	DRM_FORMAT_YUYV,
	433	DRM_FORMAT_NV12,
	434	DRM_FORMAT_NV21,
	435	DRM_FORMAT_NV16,
	436	};
	437
cb2025d2	438	int rcar_du_planes_init(struct rcar_du_group *rgrp)
4bf8e196	439	{
cb2025d2 LP	440	struct rcar_du_planes *planes = &rgrp->planes;
cb2025d2 LP	441	struct rcar_du_device *rcdu = rgrp->dev;
4bf8e196 LP	442	unsigned int i;
4bf8e196 LP	443
cb2025d2 LP	444	mutex_init(&planes->lock);
cb2025d2 LP	445	planes->free = 0xff;
4bf8e196	446
cb2025d2	447	planes->alpha =
4bf8e196	448	drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
cb2025d2	449	if (planes->alpha == NULL)
4bf8e196 LP	450	return -ENOMEM;
	451
	452	/* The color key is expressed as an RGB888 triplet stored in a 32-bit
	453	* integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
	454	* or enable source color keying (1).
	455	*/
cb2025d2	456	planes->colorkey =
4bf8e196 LP	457	drm_property_create_range(rcdu->ddev, 0, "colorkey",
4bf8e196 LP	458	0, 0x01ffffff);
cb2025d2	459	if (planes->colorkey == NULL)
4bf8e196 LP	460	return -ENOMEM;
4bf8e196 LP	461
cb2025d2	462	planes->zpos =
4bf8e196	463	drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
cb2025d2	464	if (planes->zpos == NULL)
4bf8e196 LP	465	return -ENOMEM;
4bf8e196 LP	466
cb2025d2 LP	467	for (i = 0; i < ARRAY_SIZE(planes->planes); ++i) {
cb2025d2 LP	468	struct rcar_du_plane *plane = &planes->planes[i];
4bf8e196	469
cb2025d2	470	plane->group = rgrp;
4bf8e196 LP	471	plane->hwindex = -1;
	472	plane->alpha = 255;
	473	plane->colorkey = RCAR_DU_COLORKEY_NONE;
	474	plane->zpos = 0;
	475	}
	476
	477	return 0;
	478	}
	479
cb2025d2	480	int rcar_du_planes_register(struct rcar_du_group *rgrp)
4bf8e196	481	{
cb2025d2 LP	482	struct rcar_du_planes *planes = &rgrp->planes;
cb2025d2 LP	483	struct rcar_du_device *rcdu = rgrp->dev;
a5f0ef59	484	unsigned int crtcs;
4bf8e196 LP	485	unsigned int i;
	486	int ret;
	487
a5f0ef59 LP	488	crtcs = ((1 << rcdu->num_crtcs) - 1) & (3 << (2 * rgrp->index));
a5f0ef59 LP	489
4bf8e196 LP	490	for (i = 0; i < RCAR_DU_NUM_KMS_PLANES; ++i) {
	491	struct rcar_du_kms_plane *plane;
	492
	493	plane = devm_kzalloc(rcdu->dev, sizeof(*plane), GFP_KERNEL);
	494	if (plane == NULL)
	495	return -ENOMEM;
	496
cb2025d2	497	plane->hwplane = &planes->planes[i + 2];
4bf8e196 LP	498	plane->hwplane->zpos = 1;
4bf8e196 LP	499
a5f0ef59	500	ret = drm_plane_init(rcdu->ddev, &plane->plane, crtcs,
4bf8e196 LP	501	&rcar_du_plane_funcs, formats,
	502	ARRAY_SIZE(formats), false);
	503	if (ret < 0)
	504	return ret;
	505
	506	drm_object_attach_property(&plane->plane.base,
cb2025d2	507	planes->alpha, 255);
4bf8e196	508	drm_object_attach_property(&plane->plane.base,
cb2025d2	509	planes->colorkey,
4bf8e196 LP	510	RCAR_DU_COLORKEY_NONE);
4bf8e196 LP	511	drm_object_attach_property(&plane->plane.base,
cb2025d2	512	planes->zpos, 1);
4bf8e196 LP	513	}
	514
	515	return 0;
	516	}