path: root/drivers/media/platform/mediatek/mdp/mtk_mdp_m2m.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2015-2016 MediaTek Inc.
 * Author: Houlong Wei <houlong.wei@mediatek.com>
 *         Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
 */

#include <linux/device.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>

#include "mtk_mdp_core.h"
#include "mtk_mdp_m2m.h"
#include "mtk_mdp_regs.h"
#include "mtk_vpu.h"


/**
 *  struct mtk_mdp_pix_limit - image pixel size limits
 *  @org_w: source pixel width
 *  @org_h: source pixel height
 *  @target_rot_dis_w: pixel dst scaled width with the rotator is off
 *  @target_rot_dis_h: pixel dst scaled height with the rotator is off
 *  @target_rot_en_w: pixel dst scaled width with the rotator is on
 *  @target_rot_en_h: pixel dst scaled height with the rotator is on
 */
struct mtk_mdp_pix_limit {
	u16 org_w;
	u16 org_h;
	u16 target_rot_dis_w;
	u16 target_rot_dis_h;
	u16 target_rot_en_w;
	u16 target_rot_en_h;
};

static struct mtk_mdp_pix_align mtk_mdp_size_align = {
	.org_w			= 16,
	.org_h			= 16,
	.target_w		= 2,
	.target_h		= 2,
};

static const struct mtk_mdp_fmt mtk_mdp_formats[] = {
	{
		.pixelformat	= V4L2_PIX_FMT_MT21C,
		.depth		= { 8, 4 },
		.row_depth	= { 8, 8 },
		.num_planes	= 2,
		.num_comp	= 2,
		.align		= &mtk_mdp_size_align,
		.flags		= MTK_MDP_FMT_FLAG_OUTPUT,
	}, {
		.pixelformat	= V4L2_PIX_FMT_NV12M,
		.depth		= { 8, 4 },
		.row_depth	= { 8, 8 },
		.num_planes	= 2,
		.num_comp	= 2,
		.flags		= MTK_MDP_FMT_FLAG_OUTPUT |
				  MTK_MDP_FMT_FLAG_CAPTURE,
	}, {
		.pixelformat	= V4L2_PIX_FMT_YUV420M,
		.depth		= { 8, 2, 2 },
		.row_depth	= { 8, 4, 4 },
		.num_planes	= 3,
		.num_comp	= 3,
		.flags		= MTK_MDP_FMT_FLAG_OUTPUT |
				  MTK_MDP_FMT_FLAG_CAPTURE,
	}, {
		.pixelformat	= V4L2_PIX_FMT_YVU420,
		.depth		= { 12 },
		.row_depth	= { 8 },
		.num_planes	= 1,
		.num_comp	= 3,
		.flags		= MTK_MDP_FMT_FLAG_OUTPUT |
				  MTK_MDP_FMT_FLAG_CAPTURE,
	}
};

static struct mtk_mdp_pix_limit mtk_mdp_size_max = {
	.target_rot_dis_w	= 4096,
	.target_rot_dis_h	= 4096,
	.target_rot_en_w	= 4096,
	.target_rot_en_h	= 4096,
};

static struct mtk_mdp_pix_limit mtk_mdp_size_min = {
	.org_w			= 16,
	.org_h			= 16,
	.target_rot_dis_w	= 16,
	.target_rot_dis_h	= 16,
	.target_rot_en_w	= 16,
	.target_rot_en_h	= 16,
};

/* align size for normal raster scan pixel format */
static struct mtk_mdp_pix_align mtk_mdp_rs_align = {
	.org_w			= 2,
	.org_h			= 2,
	.target_w		= 2,
	.target_h		= 2,
};

static struct mtk_mdp_variant mtk_mdp_default_variant = {
	.pix_max		= &mtk_mdp_size_max,
	.pix_min		= &mtk_mdp_size_min,
	.pix_align		= &mtk_mdp_rs_align,
	.h_scale_up_max		= 32,
	.v_scale_up_max		= 32,
	.h_scale_down_max	= 32,
	.v_scale_down_max	= 128,
};

static const struct mtk_mdp_fmt *mtk_mdp_find_fmt(u32 pixelformat, u32 type)
{
	u32 i, flag;

	flag = V4L2_TYPE_IS_OUTPUT(type) ? MTK_MDP_FMT_FLAG_OUTPUT :
					   MTK_MDP_FMT_FLAG_CAPTURE;

	for (i = 0; i < ARRAY_SIZE(mtk_mdp_formats); ++i) {
		if (!(mtk_mdp_formats[i].flags & flag))
			continue;
		if (mtk_mdp_formats[i].pixelformat == pixelformat<