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

/*
 * rcar_du_plane.c  --  R-Car Display Unit Planes
 *
 * Copyright (C) 2013 Renesas 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_device *rcdu,
			      unsigned int index, u32 reg)
{
	return rcar_du_read(rcdu, index * PLANE_OFF + reg);
}

static void rcar_du_plane_write(struct rcar_du_device *rcdu,
				unsigned int index, u32 reg, u32 data)
{
	rcar_du_write(rcdu, 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_device *rcdu = plane->dev;
	unsigned int i;
	int ret = -EBUSY;

	mutex_lock(&rcdu->planes.lock);

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

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

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

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

	plane->hwindex = i;

	ret = 0;

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

void rcar_du_plane_release(struct rcar_du_plane *plane)
{
	struct rcar_du_device *rcdu = plane->dev;

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

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

	plane->hwindex = -1;
}

void rcar_du_plane_update_base(struct rcar_du_plane *plane)
{
	struct rcar_du_device *rcdu = plane->dev;
	unsigned int index = plane->hwindex;

	/* 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(rcdu, index, PnSPXR, plane->src_x);
	rcar_du_plane_write(rcdu, index, PnSPYR, plane->src_y *
			    (plane->format->bpp == 32 ? 2 : 1));
	rcar_du_plane_write(rcdu, index, PnDSA0R, plane->dma[0]);

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

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

	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_device *rcdu = plane->dev;
	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(rcdu, index, PnALPHAR, PnALPHAR_ABIT_0);
	else
		rcar_du_plane_write(rcdu, 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(rcdu, 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(rcdu, 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(rcdu, index, PnTC2R, colorkey);
		break;

	case DRM_FORMAT_XRGB8888:
	case DRM_FORMAT_ARGB8888:
		rcar_du_plane_write(rcdu, 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_device *rcdu = plane->dev;
	u32 ddcr2 = PnDDCR2_CODE;
	u32 ddcr4;
	u32 mwr;

	/* Data format
	 *
	 * The data format is selected by the DDDF field in PnMR and the EDF
	 * field in DDCR4.
	 */
	ddcr4 = rcar_du_plane_read(rcdu, 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(rcdu, index, PnDDCR2, ddcr2);
	rcar_du_plane_write(rcdu, index, PnDDCR4, ddcr4);

	/* 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(rcdu, index, PnMWR, mwr);

	/* Destination position and size */
	rcar_du_plane_write(rcdu, index, PnDSXR, plane->width);
	rcar_du_plane_write(rcdu, index, PnDSYR, plane->height);
	rcar_du_plane_write(rcdu, index, PnDPXR, plane->dst_x);
	rcar_du_plane_write(rcdu, index, PnDPYR, plane->dst_y);

	/* Wrap-around and blinking, disabled */
	rcar_du_plane_write(rcdu, index, PnWASPR, 0);
	rcar_du_plane_write(rcdu, index, PnWAMWR, 4095);
	rcar_du_plane_write(rcdu, index, PnBTR, 0);
	rcar_du_plane_write(rcdu, 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 = plane->dev->dev_private;
	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->pitch = fb->pitches[0];

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

	return 0;
}

static int rcar_du_plane_disable(struct drm_plane *plane)
{
	struct rcar_du_device *rcdu = plane->dev->dev_private;
	struct rcar_du_plane *rplane = to_rcar_plane(plane);

	if (!rplane->enabled)
		return 0;

	mutex_lock(&rcdu->planes.lock);
	rplane->enabled = false;
	rcar_du_crtc_update_planes(rplane->crtc);
	mutex_unlock(&rcdu->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)
{
	struct rcar_du_device *rcdu = plane->dev;

	mutex_lock(&rcdu->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(&rcdu->planes.lock);
}

static int rcar_du_plane_set_property(struct drm_plane *plane,
				      struct drm_property *property,
				      uint64_t value)
{
	struct rcar_du_device *rcdu = plane->dev->dev_private;
	struct rcar_du_plane *rplane = to_rcar_plane(plane);

	if (property == rcdu->planes.alpha)
		rcar_du_plane_set_alpha(rplane, value);
	else if (property == rcdu->planes.colorkey)
		rcar_du_plane_set_colorkey(rplane, value);
	else if (property == rcdu->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_device *rcdu)
{
	unsigned int i;

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

	rcdu->planes.alpha =
		drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
	if (rcdu->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).
	 */
	rcdu->planes.colorkey =
		drm_property_create_range(rcdu->ddev, 0, "colorkey",
					  0, 0x01ffffff);
	if (rcdu->planes.colorkey == NULL)
		return -ENOMEM;

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

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

		plane->dev = rcdu;
		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_device *rcdu)
{
	unsigned int i;
	int ret;

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

		ret = drm_plane_init(rcdu->ddev, &plane->plane,
				     (1 << rcdu->num_crtcs) - 1,
				     &rcar_du_plane_funcs, formats,
				     ARRAY_SIZE(formats), false);
		if (ret < 0)
			return ret;

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

	return 0;
}
Commit	Line	Data
4bf8e196 LP	1	/*
	2	* rcar_du_plane.c -- R-Car Display Unit Planes
	3	*
	4	* Copyright (C) 2013 Renesas Corporation
	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
	39	static u32 rcar_du_plane_read(struct rcar_du_device *rcdu,
	40	unsigned int index, u32 reg)
	41	{
	42	return rcar_du_read(rcdu, index * PLANE_OFF + reg);
	43	}
	44
	45	static void rcar_du_plane_write(struct rcar_du_device *rcdu,
	46	unsigned int index, u32 reg, u32 data)
	47	{
	48	rcar_du_write(rcdu, index * PLANE_OFF + reg, data);
	49	}
	50
	51	int rcar_du_plane_reserve(struct rcar_du_plane *plane,
	52	const struct rcar_du_format_info *format)
	53	{
	54	struct rcar_du_device *rcdu = plane->dev;
	55	unsigned int i;
	56	int ret = -EBUSY;
	57
	58	mutex_lock(&rcdu->planes.lock);
	59
	60	for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) {
	61	if (!(rcdu->planes.free & (1 << i)))
	62	continue;
	63
	64	if (format->planes == 1 \|\|
65	rcdu->planes.free & (1 << ((i + 1) % 8)))
66	break;
67	}
68
69	if (i == ARRAY_SIZE(rcdu->planes.planes))
70	goto done;
71
72	rcdu->planes.free &= ~(1 << i);
73	if (format->planes == 2)
74	rcdu->planes.free &= ~(1 << ((i + 1) % 8));
75
76	plane->hwindex = i;
77
78	ret = 0;
79
80	done:
81	mutex_unlock(&rcdu->planes.lock);
82	return ret;
83	}
84
85	void rcar_du_plane_release(struct rcar_du_plane *plane)
86	{
87	struct rcar_du_device *rcdu = plane->dev;
88
89	if (plane->hwindex == -1)
90	return;
91
92	mutex_lock(&rcdu->planes.lock);
93	rcdu->planes.free \|= 1 << plane->hwindex;
94	if (plane->format->planes == 2)
95	rcdu->planes.free \|= 1 << ((plane->hwindex + 1) % 8);
96	mutex_unlock(&rcdu->planes.lock);
97
98	plane->hwindex = -1;
99	}
100
101	void rcar_du_plane_update_base(struct rcar_du_plane *plane)
102	{
103	struct rcar_du_device *rcdu = plane->dev;
104	unsigned int index = plane->hwindex;
105
9e7db06d LP	106	/* The Y position is expressed in raster line units and must be doubled
	107	* for 32bpp formats, according to the R8A7790 datasheet. No mention of
	108	* doubling the Y position is found in the R8A7779 datasheet, but the
	109	* rule seems to apply there as well.
	110	*
	111	* Similarly, for the second plane, NV12 and NV21 formats seem to
4bf8e196 LP	112	* require a halved Y position value.
	113	*/
	114	rcar_du_plane_write(rcdu, index, PnSPXR, plane->src_x);
	115	rcar_du_plane_write(rcdu, index, PnSPYR, plane->src_y *
	116	(plane->format->bpp == 32 ? 2 : 1));
	117	rcar_du_plane_write(rcdu, index, PnDSA0R, plane->dma[0]);
	118
	119	if (plane->format->planes == 2) {
	120	index = (index + 1) % 8;
	121
	122	rcar_du_plane_write(rcdu, index, PnSPXR, plane->src_x);
	123	rcar_du_plane_write(rcdu, index, PnSPYR, plane->src_y *
	124	(plane->format->bpp == 16 ? 2 : 1) / 2);
	125	rcar_du_plane_write(rcdu, index, PnDSA0R, plane->dma[1]);
	126	}
	127	}
	128
	129	void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
	130	struct drm_framebuffer *fb)
	131	{
	132	struct drm_gem_cma_object *gem;
	133
	134	gem = drm_fb_cma_get_gem_obj(fb, 0);
	135	plane->dma[0] = gem->paddr + fb->offsets[0];
	136
	137	if (plane->format->planes == 2) {
	138	gem = drm_fb_cma_get_gem_obj(fb, 1);
	139	plane->dma[1] = gem->paddr + fb->offsets[1];
	140	}
	141	}
	142
	143	static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
	144	unsigned int index)
	145	{
	146	struct rcar_du_device *rcdu = plane->dev;
	147	u32 colorkey;
	148	u32 pnmr;
	149
	150	/* The PnALPHAR register controls alpha-blending in 16bpp formats
	151	* (ARGB1555 and XRGB1555).
	152	*
	153	* For ARGB, set the alpha value to 0, and enable alpha-blending when
	154	* the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
	155	*
	156	* For XRGB, set the alpha value to the plane-wide alpha value and
	157	* enable alpha-blending regardless of the X bit value.
	158	*/
	159	if (plane->format->fourcc != DRM_FORMAT_XRGB1555)
	160	rcar_du_plane_write(rcdu, index, PnALPHAR, PnALPHAR_ABIT_0);
	161	else
	162	rcar_du_plane_write(rcdu, index, PnALPHAR,
	163	PnALPHAR_ABIT_X \| plane->alpha);
	164
	165	pnmr = PnMR_BM_MD \| plane->format->pnmr;
	166
	167	/* Disable color keying when requested. YUV formats have the
	168	* PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
	169	* automatically.
	170	*/
	171	if ((plane->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
	172	pnmr \|= PnMR_SPIM_TP_OFF;
	173
	174	/* For packed YUV formats we need to select the U/V order. */
	175	if (plane->format->fourcc == DRM_FORMAT_YUYV)
176	pnmr \|= PnMR_YCDF_YUYV;
177
178	rcar_du_plane_write(rcdu, index, PnMR, pnmr);
179
180	switch (plane->format->fourcc) {
181	case DRM_FORMAT_RGB565:
182	colorkey = ((plane->colorkey & 0xf80000) >> 8)
183	\| ((plane->colorkey & 0x00fc00) >> 5)
184	\| ((plane->colorkey & 0x0000f8) >> 3);
185	rcar_du_plane_write(rcdu, index, PnTC2R, colorkey);
186	break;
187
188	case DRM_FORMAT_ARGB1555:
189	case DRM_FORMAT_XRGB1555:
190	colorkey = ((plane->colorkey & 0xf80000) >> 9)
191	\| ((plane->colorkey & 0x00f800) >> 6)
192	\| ((plane->colorkey & 0x0000f8) >> 3);
193	rcar_du_plane_write(rcdu, index, PnTC2R, colorkey);
194	break;
195
196	case DRM_FORMAT_XRGB8888:
197	case DRM_FORMAT_ARGB8888:
198	rcar_du_plane_write(rcdu, index, PnTC3R,
199	PnTC3R_CODE \| (plane->colorkey & 0xffffff));
200	break;
201	}
202	}
203
204	static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
205	unsigned int index)
206	{
207	struct rcar_du_device *rcdu = plane->dev;
208	u32 ddcr2 = PnDDCR2_CODE;
209	u32 ddcr4;
210	u32 mwr;
211
212	/* Data format
213	*
214	* The data format is selected by the DDDF field in PnMR and the EDF
215	* field in DDCR4.
216	*/
217	ddcr4 = rcar_du_plane_read(rcdu, index, PnDDCR4);
218	ddcr4 &= ~PnDDCR4_EDF_MASK;
219	ddcr4 \|= plane->format->edf \| PnDDCR4_CODE;
220
221	rcar_du_plane_setup_mode(plane, index);
222
223	if (plane->format->planes == 2) {
224	if (plane->hwindex != index) {
225	if (plane->format->fourcc == DRM_FORMAT_NV12 \|\|
226	plane->format->fourcc == DRM_FORMAT_NV21)
227	ddcr2 \|= PnDDCR2_Y420;
228
229	if (plane->format->fourcc == DRM_FORMAT_NV21)
230	ddcr2 \|= PnDDCR2_NV21;
231
232	ddcr2 \|= PnDDCR2_DIVU;
233	} else {
234	ddcr2 \|= PnDDCR2_DIVY;
235	}
236	}
237
238	rcar_du_plane_write(rcdu, index, PnDDCR2, ddcr2);
239	rcar_du_plane_write(rcdu, index, PnDDCR4, ddcr4);
240
241	/* Memory pitch (expressed in pixels) */
242	if (plane->format->planes == 2)
243	mwr = plane->pitch;
244	else
245	mwr = plane->pitch * 8 / plane->format->bpp;
246
247	rcar_du_plane_write(rcdu, index, PnMWR, mwr);
248
249	/* Destination position and size */
250	rcar_du_plane_write(rcdu, index, PnDSXR, plane->width);
251	rcar_du_plane_write(rcdu, index, PnDSYR, plane->height);
252	rcar_du_plane_write(rcdu, index, PnDPXR, plane->dst_x);
253	rcar_du_plane_write(rcdu, index, PnDPYR, plane->dst_y);
254
255	/* Wrap-around and blinking, disabled */
256	rcar_du_plane_write(rcdu, index, PnWASPR, 0);
257	rcar_du_plane_write(rcdu, index, PnWAMWR, 4095);
258	rcar_du_plane_write(rcdu, index, PnBTR, 0);
259	rcar_du_plane_write(rcdu, index, PnMLR, 0);
260	}
261
262	void rcar_du_plane_setup(struct rcar_du_plane *plane)
263	{
264	__rcar_du_plane_setup(plane, plane->hwindex);
265	if (plane->format->planes == 2)
266	__rcar_du_plane_setup(plane, (plane->hwindex + 1) % 8);
267
268	rcar_du_plane_update_base(plane);
269	}
270
271	static int
272	rcar_du_plane_update(struct drm_plane plane, struct drm_crtc crtc,
273	struct drm_framebuffer *fb, int crtc_x, int crtc_y,
274	unsigned int crtc_w, unsigned int crtc_h,
275	uint32_t src_x, uint32_t src_y,
276	uint32_t src_w, uint32_t src_h)
277	{
278	struct rcar_du_plane *rplane = to_rcar_plane(plane);
279	struct rcar_du_device *rcdu = plane->dev->dev_private;
280	const struct rcar_du_format_info *format;
281	unsigned int nplanes;
282	int ret;
283
284	format = rcar_du_format_info(fb->pixel_format);
285	if (format == NULL) {
286	dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
287	fb->pixel_format);
288	return -EINVAL;
289	}
290
291	if (src_w >> 16 != crtc_w \|\| src_h >> 16 != crtc_h) {
292	dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
293	return -EINVAL;
294	}
295
296	nplanes = rplane->format ? rplane->format->planes : 0;
297
298	/* Reallocate hardware planes if the number of required planes has
299	* changed.
300	*/
301	if (format->planes != nplanes) {
302	rcar_du_plane_release(rplane);
303	ret = rcar_du_plane_reserve(rplane, format);
304	if (ret < 0)
305	return ret;
306	}
307
308	rplane->crtc = crtc;
309	rplane->format = format;
310	rplane->pitch = fb->pitches[0];
311
312	rplane->src_x = src_x >> 16;
313	rplane->src_y = src_y >> 16;
314	rplane->dst_x = crtc_x;
315	rplane->dst_y = crtc_y;
316	rplane->width = crtc_w;
317	rplane->height = crtc_h;
318
319	rcar_du_plane_compute_base(rplane, fb);
320	rcar_du_plane_setup(rplane);
321
322	mutex_lock(&rcdu->planes.lock);
323	rplane->enabled = true;
324	rcar_du_crtc_update_planes(rplane->crtc);
325	mutex_unlock(&rcdu->planes.lock);
326
327	return 0;
328	}
329
330	static int rcar_du_plane_disable(struct drm_plane *plane)
331	{
332	struct rcar_du_device *rcdu = plane->dev->dev_private;
333	struct rcar_du_plane *rplane = to_rcar_plane(plane);
334
335	if (!rplane->enabled)
336	return 0;
337
338	mutex_lock(&rcdu->planes.lock);
339	rplane->enabled = false;
340	rcar_du_crtc_update_planes(rplane->crtc);
341	mutex_unlock(&rcdu->planes.lock);
342
343	rcar_du_plane_release(rplane);
344
345	rplane->crtc = NULL;
346	rplane->format = NULL;
347
348	return 0;
349	}
350
351	/* Both the .set_property and the .update_plane operations are called with the
352	* mode_config lock held. There is this no need to explicitly protect access to
353	* the alpha and colorkey fields and the mode register.
354	*/
355	static void rcar_du_plane_set_alpha(struct rcar_du_plane *plane, u32 alpha)
356	{
357	if (plane->alpha == alpha)
358	return;
359
360	plane->alpha = alpha;
361	if (!plane->enabled \|\| plane->format->fourcc != DRM_FORMAT_XRGB1555)
362	return;
363
364	rcar_du_plane_setup_mode(plane, plane->hwindex);
365	}
366
367	static void rcar_du_plane_set_colorkey(struct rcar_du_plane *plane,
368	u32 colorkey)
369	{
370	if (plane->colorkey == colorkey)
371	return;
372
373	plane->colorkey = colorkey;
374	if (!plane->enabled)
375	return;
376
377	rcar_du_plane_setup_mode(plane, plane->hwindex);
378	}
379
380	static void rcar_du_plane_set_zpos(struct rcar_du_plane *plane,
381	unsigned int zpos)
382	{
383	struct rcar_du_device *rcdu = plane->dev;
384
385	mutex_lock(&rcdu->planes.lock);
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:
396	mutex_unlock(&rcdu->planes.lock);
397	}
398
399	static int rcar_du_plane_set_property(struct drm_plane *plane,
400	struct drm_property *property,
401	uint64_t value)
402	{
403	struct rcar_du_device *rcdu = plane->dev->dev_private;
404	struct rcar_du_plane *rplane = to_rcar_plane(plane);
405
406	if (property == rcdu->planes.alpha)
407	rcar_du_plane_set_alpha(rplane, value);
408	else if (property == rcdu->planes.colorkey)
409	rcar_du_plane_set_colorkey(rplane, value);
410	else if (property == rcdu->planes.zpos)
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
7fe99fda	438	int rcar_du_planes_init(struct rcar_du_device *rcdu)
4bf8e196 LP	439	{
	440	unsigned int i;
	441
	442	mutex_init(&rcdu->planes.lock);
	443	rcdu->planes.free = 0xff;
	444
	445	rcdu->planes.alpha =
	446	drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
	447	if (rcdu->planes.alpha == NULL)
	448	return -ENOMEM;
	449
	450	/* The color key is expressed as an RGB888 triplet stored in a 32-bit
	451	* integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
	452	* or enable source color keying (1).
	453	*/
	454	rcdu->planes.colorkey =
	455	drm_property_create_range(rcdu->ddev, 0, "colorkey",
	456	0, 0x01ffffff);
	457	if (rcdu->planes.colorkey == NULL)
	458	return -ENOMEM;
	459
	460	rcdu->planes.zpos =
	461	drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
	462	if (rcdu->planes.zpos == NULL)
	463	return -ENOMEM;
	464
	465	for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) {
	466	struct rcar_du_plane *plane = &rcdu->planes.planes[i];
	467
	468	plane->dev = rcdu;
	469	plane->hwindex = -1;
	470	plane->alpha = 255;
	471	plane->colorkey = RCAR_DU_COLORKEY_NONE;
	472	plane->zpos = 0;
	473	}
	474
	475	return 0;
	476	}
	477
7fe99fda	478	int rcar_du_planes_register(struct rcar_du_device *rcdu)
4bf8e196 LP	479	{
	480	unsigned int i;
	481	int ret;
	482
	483	for (i = 0; i < RCAR_DU_NUM_KMS_PLANES; ++i) {
	484	struct rcar_du_kms_plane *plane;
	485
	486	plane = devm_kzalloc(rcdu->dev, sizeof(*plane), GFP_KERNEL);
	487	if (plane == NULL)
	488	return -ENOMEM;
	489
	490	plane->hwplane = &rcdu->planes.planes[i + 2];
	491	plane->hwplane->zpos = 1;
	492
	493	ret = drm_plane_init(rcdu->ddev, &plane->plane,
	494	(1 << rcdu->num_crtcs) - 1,
	495	&rcar_du_plane_funcs, formats,
	496	ARRAY_SIZE(formats), false);
	497	if (ret < 0)
	498	return ret;
	499
	500	drm_object_attach_property(&plane->plane.base,
	501	rcdu->planes.alpha, 255);
	502	drm_object_attach_property(&plane->plane.base,
	503	rcdu->planes.colorkey,
	504	RCAR_DU_COLORKEY_NONE);
	505	drm_object_attach_property(&plane->plane.base,
	506	rcdu->planes.zpos, 1);
	507	}
	508
	509	return 0;
	510	}