drivers/gpu/imx/dpu/dpu-fetchlayer.c - linux-imx - Git at Google

 /*
  * Copyright (C) 2016 Freescale Semiconductor, Inc.
  * Copyright 2017 NXP
  *
  * 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.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * for more details.
  */

 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
 #include <linux/types.h>
 #include <video/dpu.h>
 #include "dpu-prv.h"

 #define PIXENGCFG_STATUS		0x8
 #define BASEADDRESS(n)			(0x10 + (n) * 0x28)
 #define SOURCEBUFFERATTRIBUTES(n)	(0x14 + (n) * 0x28)
 #define SOURCEBUFFERDIMENSION(n)	(0x18 + (n) * 0x28)
 #define COLORCOMPONENTBITS(n)		(0x1C + (n) * 0x28)
 #define COLORCOMPONENTSHIFT(n)		(0x20 + (n) * 0x28)
 #define LAYEROFFSET(n)			(0x24 + (n) * 0x28)
 #define CLIPWINDOWOFFSET(n)		(0x28 + (n) * 0x28)
 #define CLIPWINDOWDIMENSIONS(n)		(0x2C + (n) * 0x28)
 #define CONSTANTCOLOR(n)		(0x30 + (n) * 0x28)
 #define LAYERPROPERTY(n)		(0x34 + (n) * 0x28)
 #define FRAMEDIMENSIONS			0x150
 #define FRAMERESAMPLING			0x154
 #define CONTROL				0x158
 #define TRIGGERENABLE			0x15C
 #define SHDLDREQ(lm)			((lm) & 0xFF)
 #define CONTROLTRIGGER			0x160
 #define START				0x164
 #define FETCHTYPE			0x168
 #define BURSTBUFFERPROPERTIES		0x16C
 #define STATUS				0x170
 #define HIDDENSTATUS			0x174

 static const shadow_load_req_t fl_shdlreqs[] = {
 	SHLDREQID_FETCHLAYER0, SHLDREQID_FETCHLAYER1,
 };

 struct dpu_fetchlayer {
 	void __iomem *pec_base;
 	void __iomem *base;
 	struct mutex mutex;
 	int id;
 	bool inuse;
 	struct dpu_soc *dpu;
 	fetchtype_t fetchtype;
 	shadow_load_req_t shdlreq;
 };

 static inline u32 dpu_fl_read(struct dpu_fetchlayer *fl, unsigned int offset)
 {
 	return readl(fl->base + offset);
 }

 static inline void dpu_fl_write(struct dpu_fetchlayer *fl, u32 value,
 				unsigned int offset)
 {
 	writel(value, fl->base + offset);
 }

 static inline u32 rgb_color(u8 r, u8 g, u8 b, u8 a)
 {
 	return (r << 24) | (g << 16) | (b << 8) | a;
 }

 static inline u32 yuv_color(u8 y, u8 u, u8 v)
 {
 	return (y << 24) | (u << 16) | (v << 8);
 }

 void fetchlayer_shden(struct dpu_fetchlayer *fl, bool enable)
 {
 	u32 val;

 	mutex_lock(&fl->mutex);
 	val = dpu_fl_read(fl, STATICCONTROL);
 	if (enable)
 		val |= SHDEN;
 	else
 		val &= ~SHDEN;
 	dpu_fl_write(fl, val, STATICCONTROL);
 	mutex_unlock(&fl->mutex);
 }
 EXPORT_SYMBOL_GPL(fetchlayer_shden);

 void fetchlayer_baddr_autoupdate(struct dpu_fetchlayer *fl, u8 layer_mask)
 {
 	u32 val;

 	mutex_lock(&fl->mutex);
 	val = dpu_fl_read(fl, STATICCONTROL);
 	val &= ~BASEADDRESSAUTOUPDATE_MASK;
 	val |= BASEADDRESSAUTOUPDATE(layer_mask);
 	dpu_fl_write(fl, val, STATICCONTROL);
 	mutex_unlock(&fl->mutex);
 }
 EXPORT_SYMBOL_GPL(fetchlayer_baddr_autoupdate);

 void fetchlayer_framedimensions(struct dpu_fetchlayer *fl, unsigned int w,
 				unsigned int h)
 {
 	u32 val;

 	val = FRAMEWIDTH(w) | FRAMEHEIGHT(h);

 	mutex_lock(&fl->mutex);
 	dpu_fl_write(fl, val, FRAMEDIMENSIONS);
 	mutex_unlock(&fl->mutex);
 }
 EXPORT_SYMBOL_GPL(fetchlayer_framedimensions);

 void fetchlayer_rgb_constantcolor(struct dpu_fetchlayer *fl,
 					u8 r, u8 g, u8 b, u8 a)
 {
 	u32 val;

 	val = rgb_color(r, g, b, a);

 	mutex_lock(&fl->mutex);
 	dpu_fl_write(fl, val, CONSTANTCOLOR(fl->id));
 	mutex_unlock(&fl->mutex);
 }
 EXPORT_SYMBOL_GPL(fetchlayer_rgb_constantcolor);

 void fetchlayer_yuv_constantcolor(struct dpu_fetchlayer *fl, u8 y, u8 u, u8 v)
 {
 	u32 val;

 	val = yuv_color(y, u, v);

 	mutex_lock(&fl->mutex);
 	dpu_fl_write(fl, val, CONSTANTCOLOR(fl->id));
 	mutex_unlock(&fl->mutex);
 }
 EXPORT_SYMBOL_GPL(fetchlayer_yuv_constantcolor);

 void fetchlayer_controltrigger(struct dpu_fetchlayer *fl, bool trigger)
 {
 	u32 val;

 	val = trigger ? SHDTOKGEN : 0;

 	mutex_lock(&fl->mutex);
 	dpu_fl_write(fl, val, CONTROLTRIGGER);
 	mutex_unlock(&fl->mutex);
 }
 EXPORT_SYMBOL_GPL(fetchlayer_controltrigger);

 int fetchlayer_fetchtype(struct dpu_fetchlayer *fl, fetchtype_t *type)
 {
 	struct dpu_soc *dpu = fl->dpu;
 	u32 val;

 	mutex_lock(&fl->mutex);
 	val = dpu_fl_read(fl, FETCHTYPE);
 	val &= FETCHTYPE_MASK;
 	mutex_unlock(&fl->mutex);

 	switch (val) {
 	case FETCHTYPE__DECODE:
 		dev_dbg(dpu->dev, "FetchLayer%d with RL and RLAD decoder\n",
 				fl->id);
 		break;
 	case FETCHTYPE__LAYER:
 		dev_dbg(dpu->dev, "FetchLayer%d with fractional "
 				"plane(8 layers)\n", fl->id);
 		break;
 	case FETCHTYPE__WARP:
 		dev_dbg(dpu->dev, "FetchLayer%d with arbitrary warping and "
 				"fractional plane(8 layers)\n", fl->id);
 		break;
 	case FETCHTYPE__ECO:
 		dev_dbg(dpu->dev, "FetchLayer%d with minimum feature set for "
 				"alpha, chroma and coordinate planes\n",
 				fl->id);
 		break;
 	case FETCHTYPE__PERSP:
 		dev_dbg(dpu->dev, "FetchLayer%d with affine, perspective and "
 				"arbitrary warping\n", fl->id);
 		break;
 	case FETCHTYPE__ROT:
 		dev_dbg(dpu->dev, "FetchLayer%d with affine and arbitrary "
 				"warping\n", fl->id);
 		break;
 	case FETCHTYPE__DECODEL:
 		dev_dbg(dpu->dev, "FetchLayer%d with RL and RLAD decoder, "
 				"reduced feature set\n", fl->id);
 		break;
 	case FETCHTYPE__LAYERL:
 		dev_dbg(dpu->dev, "FetchLayer%d with fractional "
 				"plane(8 layers), reduced feature set\n",
 				fl->id);
 		break;
 	case FETCHTYPE__ROTL:
 		dev_dbg(dpu->dev, "FetchLayer%d with affine and arbitrary "
 				"warping, reduced feature set\n", fl->id);
 		break;
 	default:
 		dev_warn(dpu->dev, "Invalid fetch type %u for FetchLayer%d\n",
 				val, fl->id);
 		return -EINVAL;
 	}

 	*type = val;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(fetchlayer_fetchtype);

 struct dpu_fetchlayer *dpu_fl_get(struct dpu_soc *dpu, int id)
 {
 	struct dpu_fetchlayer *fl;
 	int i;

 	for (i = 0; i < ARRAY_SIZE(fl_ids); i++)
 		if (fl_ids[i] == id)
 			break;

 	if (i == ARRAY_SIZE(fl_ids))
 		return ERR_PTR(-EINVAL);

 	fl = dpu->fl_priv[i];

 	mutex_lock(&fl->mutex);

 	if (fl->inuse) {
 		fl = ERR_PTR(-EBUSY);
 		goto out;
 	}

 	fl->inuse = true;
 out:
 	mutex_unlock(&fl->mutex);

 	return fl;
 }
 EXPORT_SYMBOL_GPL(dpu_fl_get);

 void dpu_fl_put(struct dpu_fetchlayer *fl)
 {
 	mutex_lock(&fl->mutex);

 	fl->inuse = false;

 	mutex_unlock(&fl->mutex);
 }
 EXPORT_SYMBOL_GPL(dpu_fl_put);

 void _dpu_fl_init(struct dpu_soc *dpu, unsigned int id)
 {
 }

 int dpu_fl_init(struct dpu_soc *dpu, unsigned int id,
 		unsigned long pec_base, unsigned long base)
 {
 	struct dpu_fetchlayer *fl;
 	int ret, i;

 	fl = devm_kzalloc(dpu->dev, sizeof(*fl), GFP_KERNEL);
 	if (!fl)
 		return -ENOMEM;

 	dpu->fl_priv[id] = fl;

 	fl->pec_base = devm_ioremap(dpu->dev, base, SZ_16);
 	if (!fl->pec_base)
 		return -ENOMEM;

 	fl->base = devm_ioremap(dpu->dev, base, SZ_512);
 	if (!fl->base)
 		return -ENOMEM;

 	fl->dpu = dpu;
 	fl->id = id;
 	for (i = 0; i < ARRAY_SIZE(fl_ids); i++) {
 		if (fl_ids[i] == id) {
 			fl->shdlreq = fl_shdlreqs[i];
 			break;
 		}
 	}
 	mutex_init(&fl->mutex);

 	ret = fetchlayer_fetchtype(fl, &fl->fetchtype);
 	if (ret < 0)
 		return ret;

 	return 0;
 }
	/*
	* Copyright (C) 2016 Freescale Semiconductor, Inc.
	* Copyright 2017 NXP
	*
	* 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.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* for more details.
	*/

	#include <linux/io.h>
	#include <linux/module.h>
	#include <linux/mutex.h>
	#include <linux/platform_device.h>
	#include <linux/types.h>
	#include <video/dpu.h>
	#include "dpu-prv.h"

	#define PIXENGCFG_STATUS 0x8
	#define BASEADDRESS(n) (0x10 + (n) * 0x28)
	#define SOURCEBUFFERATTRIBUTES(n) (0x14 + (n) * 0x28)
	#define SOURCEBUFFERDIMENSION(n) (0x18 + (n) * 0x28)
	#define COLORCOMPONENTBITS(n) (0x1C + (n) * 0x28)
	#define COLORCOMPONENTSHIFT(n) (0x20 + (n) * 0x28)
	#define LAYEROFFSET(n) (0x24 + (n) * 0x28)
	#define CLIPWINDOWOFFSET(n) (0x28 + (n) * 0x28)
	#define CLIPWINDOWDIMENSIONS(n) (0x2C + (n) * 0x28)
	#define CONSTANTCOLOR(n) (0x30 + (n) * 0x28)
	#define LAYERPROPERTY(n) (0x34 + (n) * 0x28)
	#define FRAMEDIMENSIONS 0x150
	#define FRAMERESAMPLING 0x154
	#define CONTROL 0x158
	#define TRIGGERENABLE 0x15C
	#define SHDLDREQ(lm) ((lm) & 0xFF)
	#define CONTROLTRIGGER 0x160
	#define START 0x164
	#define FETCHTYPE 0x168
	#define BURSTBUFFERPROPERTIES 0x16C
	#define STATUS 0x170
	#define HIDDENSTATUS 0x174

	static const shadow_load_req_t fl_shdlreqs[] = {
	SHLDREQID_FETCHLAYER0, SHLDREQID_FETCHLAYER1,
	};

	struct dpu_fetchlayer {
	void __iomem *pec_base;
	void __iomem *base;
	struct mutex mutex;
	int id;
	bool inuse;
	struct dpu_soc *dpu;
	fetchtype_t fetchtype;
	shadow_load_req_t shdlreq;
	};

	static inline u32 dpu_fl_read(struct dpu_fetchlayer *fl, unsigned int offset)
	{
	return readl(fl->base + offset);
	}

	static inline void dpu_fl_write(struct dpu_fetchlayer *fl, u32 value,
	unsigned int offset)
	{
	writel(value, fl->base + offset);
	}

	static inline u32 rgb_color(u8 r, u8 g, u8 b, u8 a)
	{
	return (r << 24) \| (g << 16) \| (b << 8) \| a;
	}

	static inline u32 yuv_color(u8 y, u8 u, u8 v)
	{
	return (y << 24) \| (u << 16) \| (v << 8);
	}

	void fetchlayer_shden(struct dpu_fetchlayer *fl, bool enable)
	{
	u32 val;

	mutex_lock(&fl->mutex);
	val = dpu_fl_read(fl, STATICCONTROL);
	if (enable)
	val \|= SHDEN;
	else
	val &= ~SHDEN;
	dpu_fl_write(fl, val, STATICCONTROL);
	mutex_unlock(&fl->mutex);
	}
	EXPORT_SYMBOL_GPL(fetchlayer_shden);

	void fetchlayer_baddr_autoupdate(struct dpu_fetchlayer *fl, u8 layer_mask)
	{
	u32 val;

	mutex_lock(&fl->mutex);
	val = dpu_fl_read(fl, STATICCONTROL);
	val &= ~BASEADDRESSAUTOUPDATE_MASK;
	val \|= BASEADDRESSAUTOUPDATE(layer_mask);
	dpu_fl_write(fl, val, STATICCONTROL);
	mutex_unlock(&fl->mutex);
	}
	EXPORT_SYMBOL_GPL(fetchlayer_baddr_autoupdate);

	void fetchlayer_framedimensions(struct dpu_fetchlayer *fl, unsigned int w,
	unsigned int h)
	{
	u32 val;

	val = FRAMEWIDTH(w) \| FRAMEHEIGHT(h);

	mutex_lock(&fl->mutex);
	dpu_fl_write(fl, val, FRAMEDIMENSIONS);
	mutex_unlock(&fl->mutex);
	}
	EXPORT_SYMBOL_GPL(fetchlayer_framedimensions);

	void fetchlayer_rgb_constantcolor(struct dpu_fetchlayer *fl,
	u8 r, u8 g, u8 b, u8 a)
	{
	u32 val;

	val = rgb_color(r, g, b, a);

	mutex_lock(&fl->mutex);
	dpu_fl_write(fl, val, CONSTANTCOLOR(fl->id));
	mutex_unlock(&fl->mutex);
	}
	EXPORT_SYMBOL_GPL(fetchlayer_rgb_constantcolor);

	void fetchlayer_yuv_constantcolor(struct dpu_fetchlayer *fl, u8 y, u8 u, u8 v)
	{
	u32 val;

	val = yuv_color(y, u, v);

	mutex_lock(&fl->mutex);
	dpu_fl_write(fl, val, CONSTANTCOLOR(fl->id));
	mutex_unlock(&fl->mutex);
	}
	EXPORT_SYMBOL_GPL(fetchlayer_yuv_constantcolor);

	void fetchlayer_controltrigger(struct dpu_fetchlayer *fl, bool trigger)
	{
	u32 val;

	val = trigger ? SHDTOKGEN : 0;

	mutex_lock(&fl->mutex);
	dpu_fl_write(fl, val, CONTROLTRIGGER);
	mutex_unlock(&fl->mutex);
	}
	EXPORT_SYMBOL_GPL(fetchlayer_controltrigger);

	int fetchlayer_fetchtype(struct dpu_fetchlayer fl, fetchtype_t type)
	{
	struct dpu_soc *dpu = fl->dpu;
	u32 val;

	mutex_lock(&fl->mutex);
	val = dpu_fl_read(fl, FETCHTYPE);
	val &= FETCHTYPE_MASK;
	mutex_unlock(&fl->mutex);

	switch (val) {
	case FETCHTYPE__DECODE:
	dev_dbg(dpu->dev, "FetchLayer%d with RL and RLAD decoder\n",
	fl->id);
	break;
	case FETCHTYPE__LAYER:
	dev_dbg(dpu->dev, "FetchLayer%d with fractional "
	"plane(8 layers)\n", fl->id);
	break;
	case FETCHTYPE__WARP:
	dev_dbg(dpu->dev, "FetchLayer%d with arbitrary warping and "
	"fractional plane(8 layers)\n", fl->id);
	break;
	case FETCHTYPE__ECO:
	dev_dbg(dpu->dev, "FetchLayer%d with minimum feature set for "
	"alpha, chroma and coordinate planes\n",
	fl->id);
	break;
	case FETCHTYPE__PERSP:
	dev_dbg(dpu->dev, "FetchLayer%d with affine, perspective and "
	"arbitrary warping\n", fl->id);
	break;
	case FETCHTYPE__ROT:
	dev_dbg(dpu->dev, "FetchLayer%d with affine and arbitrary "
	"warping\n", fl->id);
	break;
	case FETCHTYPE__DECODEL:
	dev_dbg(dpu->dev, "FetchLayer%d with RL and RLAD decoder, "
	"reduced feature set\n", fl->id);
	break;
	case FETCHTYPE__LAYERL:
	dev_dbg(dpu->dev, "FetchLayer%d with fractional "
	"plane(8 layers), reduced feature set\n",
	fl->id);
	break;
	case FETCHTYPE__ROTL:
	dev_dbg(dpu->dev, "FetchLayer%d with affine and arbitrary "
	"warping, reduced feature set\n", fl->id);
	break;
	default:
	dev_warn(dpu->dev, "Invalid fetch type %u for FetchLayer%d\n",
	val, fl->id);
	return -EINVAL;
	}

	*type = val;
	return 0;
	}
	EXPORT_SYMBOL_GPL(fetchlayer_fetchtype);

	struct dpu_fetchlayer dpu_fl_get(struct dpu_soc dpu, int id)
	{
	struct dpu_fetchlayer *fl;
	int i;

	for (i = 0; i < ARRAY_SIZE(fl_ids); i++)
	if (fl_ids[i] == id)
	break;

	if (i == ARRAY_SIZE(fl_ids))
	return ERR_PTR(-EINVAL);

	fl = dpu->fl_priv[i];

	mutex_lock(&fl->mutex);

	if (fl->inuse) {
	fl = ERR_PTR(-EBUSY);
	goto out;
	}

	fl->inuse = true;
	out:
	mutex_unlock(&fl->mutex);

	return fl;
	}
	EXPORT_SYMBOL_GPL(dpu_fl_get);

	void dpu_fl_put(struct dpu_fetchlayer *fl)
	{
	mutex_lock(&fl->mutex);

	fl->inuse = false;

	mutex_unlock(&fl->mutex);
	}
	EXPORT_SYMBOL_GPL(dpu_fl_put);

	void _dpu_fl_init(struct dpu_soc *dpu, unsigned int id)
	{
	}

	int dpu_fl_init(struct dpu_soc *dpu, unsigned int id,
	unsigned long pec_base, unsigned long base)
	{
	struct dpu_fetchlayer *fl;
	int ret, i;

	fl = devm_kzalloc(dpu->dev, sizeof(*fl), GFP_KERNEL);
	if (!fl)
	return -ENOMEM;

	dpu->fl_priv[id] = fl;

	fl->pec_base = devm_ioremap(dpu->dev, base, SZ_16);
	if (!fl->pec_base)
	return -ENOMEM;

	fl->base = devm_ioremap(dpu->dev, base, SZ_512);
	if (!fl->base)
	return -ENOMEM;

	fl->dpu = dpu;
	fl->id = id;
	for (i = 0; i < ARRAY_SIZE(fl_ids); i++) {
	if (fl_ids[i] == id) {
	fl->shdlreq = fl_shdlreqs[i];
	break;
	}
	}
	mutex_init(&fl->mutex);

	ret = fetchlayer_fetchtype(fl, &fl->fetchtype);
	if (ret < 0)
	return ret;

	return 0;
	}