// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*
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* Samsung EXYNOS5 SoC series G-Scaler driver
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/bug.h>
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#include <linux/interrupt.h>
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#include <linux/workqueue.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/list.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <media/v4l2-ioctl.h>
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#include "gsc-core.h"
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static const struct gsc_fmt gsc_formats[] = {
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{
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.pixelformat = V4L2_PIX_FMT_RGB565X,
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.depth = { 16 },
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.color = GSC_RGB,
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.num_planes = 1,
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.num_comp = 1,
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}, {
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.pixelformat = V4L2_PIX_FMT_BGR32,
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.depth = { 32 },
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.color = GSC_RGB,
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.num_planes = 1,
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.num_comp = 1,
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}, {
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.pixelformat = V4L2_PIX_FMT_YUYV,
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.depth = { 16 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 1,
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.num_comp = 1,
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.mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
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}, {
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.depth = { 16 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_C,
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.corder = GSC_CBCR,
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.num_planes = 1,
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.num_comp = 1,
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.mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
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}, {
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.pixelformat = V4L2_PIX_FMT_VYUY,
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.depth = { 16 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_C,
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.corder = GSC_CRCB,
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.num_planes = 1,
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.num_comp = 1,
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.mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
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}, {
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.pixelformat = V4L2_PIX_FMT_YVYU,
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.depth = { 16 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CRCB,
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.num_planes = 1,
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.num_comp = 1,
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.mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
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}, {
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.pixelformat = V4L2_PIX_FMT_YUV32,
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.depth = { 32 },
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.color = GSC_YUV444,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 1,
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.num_comp = 1,
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}, {
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.pixelformat = V4L2_PIX_FMT_YUV422P,
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.depth = { 16 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 1,
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.num_comp = 3,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV16,
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.depth = { 16 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 1,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV16M,
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.depth = { 8, 8 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 2,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV61,
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.depth = { 16 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CRCB,
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.num_planes = 1,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV61M,
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.depth = { 8, 8 },
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.color = GSC_YUV422,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CRCB,
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.num_planes = 2,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_YUV420,
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.depth = { 12 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 1,
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.num_comp = 3,
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}, {
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.pixelformat = V4L2_PIX_FMT_YVU420,
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.depth = { 12 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CRCB,
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.num_planes = 1,
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.num_comp = 3,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV12,
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.depth = { 12 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 1,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV21,
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.depth = { 12 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CRCB,
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.num_planes = 1,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV21M,
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.depth = { 8, 4 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CRCB,
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.num_planes = 2,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV12M,
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.depth = { 8, 4 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 2,
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.num_comp = 2,
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}, {
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.pixelformat = V4L2_PIX_FMT_YUV420M,
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.depth = { 8, 2, 2 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 3,
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.num_comp = 3,
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}, {
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.pixelformat = V4L2_PIX_FMT_YVU420M,
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.depth = { 8, 2, 2 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CRCB,
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.num_planes = 3,
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.num_comp = 3,
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}, {
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.pixelformat = V4L2_PIX_FMT_NV12MT_16X16,
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.depth = { 8, 4 },
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.color = GSC_YUV420,
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.yorder = GSC_LSB_Y,
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.corder = GSC_CBCR,
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.num_planes = 2,
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.num_comp = 2,
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}
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};
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const struct gsc_fmt *get_format(int index)
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{
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if (index >= ARRAY_SIZE(gsc_formats))
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return NULL;
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return (struct gsc_fmt *)&gsc_formats[index];
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}
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const struct gsc_fmt *find_fmt(u32 *pixelformat, u32 *mbus_code, u32 index)
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{
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const struct gsc_fmt *fmt, *def_fmt = NULL;
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unsigned int i;
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if (index >= ARRAY_SIZE(gsc_formats))
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return NULL;
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for (i = 0; i < ARRAY_SIZE(gsc_formats); ++i) {
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fmt = get_format(i);
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if (pixelformat && fmt->pixelformat == *pixelformat)
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return fmt;
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if (mbus_code && fmt->mbus_code == *mbus_code)
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return fmt;
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if (index == i)
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def_fmt = fmt;
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}
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return def_fmt;
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}
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void gsc_set_frame_size(struct gsc_frame *frame, int width, int height)
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{
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frame->f_width = width;
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frame->f_height = height;
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frame->crop.width = width;
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frame->crop.height = height;
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frame->crop.left = 0;
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frame->crop.top = 0;
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}
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int gsc_cal_prescaler_ratio(struct gsc_variant *var, u32 src, u32 dst,
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u32 *ratio)
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{
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if ((dst > src) || (dst >= src / var->poly_sc_down_max)) {
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*ratio = 1;
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return 0;
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}
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if ((src / var->poly_sc_down_max / var->pre_sc_down_max) > dst) {
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pr_err("Exceeded maximum downscaling ratio (1/16))");
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return -EINVAL;
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}
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*ratio = (dst > (src / 8)) ? 2 : 4;
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return 0;
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}
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void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *sh)
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{
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if (hratio == 4 && vratio == 4)
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*sh = 4;
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else if ((hratio == 4 && vratio == 2) ||
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(hratio == 2 && vratio == 4))
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*sh = 3;
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else if ((hratio == 4 && vratio == 1) ||
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(hratio == 1 && vratio == 4) ||
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(hratio == 2 && vratio == 2))
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*sh = 2;
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else if (hratio == 1 && vratio == 1)
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*sh = 0;
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else
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*sh = 1;
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}
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void gsc_check_src_scale_info(struct gsc_variant *var,
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struct gsc_frame *s_frame, u32 *wratio,
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u32 tx, u32 ty, u32 *hratio)
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{
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int remainder = 0, walign, halign;
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if (is_yuv420(s_frame->fmt->color)) {
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walign = GSC_SC_ALIGN_4;
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halign = GSC_SC_ALIGN_4;
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} else if (is_yuv422(s_frame->fmt->color)) {
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walign = GSC_SC_ALIGN_4;
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halign = GSC_SC_ALIGN_2;
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} else {
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walign = GSC_SC_ALIGN_2;
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halign = GSC_SC_ALIGN_2;
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}
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remainder = s_frame->crop.width % (*wratio * walign);
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if (remainder) {
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s_frame->crop.width -= remainder;
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gsc_cal_prescaler_ratio(var, s_frame->crop.width, tx, wratio);
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pr_info("cropped src width size is recalculated from %d to %d",
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s_frame->crop.width + remainder, s_frame->crop.width);
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}
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remainder = s_frame->crop.height % (*hratio * halign);
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if (remainder) {
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s_frame->crop.height -= remainder;
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gsc_cal_prescaler_ratio(var, s_frame->crop.height, ty, hratio);
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pr_info("cropped src height size is recalculated from %d to %d",
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s_frame->crop.height + remainder, s_frame->crop.height);
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}
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}
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int gsc_enum_fmt(struct v4l2_fmtdesc *f)
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{
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const struct gsc_fmt *fmt;
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fmt = find_fmt(NULL, NULL, f->index);
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if (!fmt)
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return -EINVAL;
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f->pixelformat = fmt->pixelformat;
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return 0;
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}
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static int get_plane_info(struct gsc_frame *frm, u32 addr, u32 *index, u32 *ret_addr)
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{
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if (frm->addr.y == addr) {
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*index = 0;
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*ret_addr = frm->addr.y;
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} else if (frm->addr.cb == addr) {
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*index = 1;
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*ret_addr = frm->addr.cb;
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} else if (frm->addr.cr == addr) {
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*index = 2;
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*ret_addr = frm->addr.cr;
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} else {
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pr_err("Plane address is wrong");
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return -EINVAL;
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}
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return 0;
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}
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void gsc_set_prefbuf(struct gsc_dev *gsc, struct gsc_frame *frm)
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{
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u32 f_chk_addr, f_chk_len, s_chk_addr, s_chk_len;
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f_chk_addr = f_chk_len = s_chk_addr = s_chk_len = 0;
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f_chk_addr = frm->addr.y;
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f_chk_len = frm->payload[0];
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if (frm->fmt->num_planes == 2) {
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s_chk_addr = frm->addr.cb;
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s_chk_len = frm->payload[1];
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} else if (frm->fmt->num_planes == 3) {
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u32 low_addr, low_plane, mid_addr, mid_plane;
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u32 high_addr, high_plane;
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u32 t_min, t_max;
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t_min = min3(frm->addr.y, frm->addr.cb, frm->addr.cr);
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if (get_plane_info(frm, t_min, &low_plane, &low_addr))
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return;
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t_max = max3(frm->addr.y, frm->addr.cb, frm->addr.cr);
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if (get_plane_info(frm, t_max, &high_plane, &high_addr))
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return;
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mid_plane = 3 - (low_plane + high_plane);
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if (mid_plane == 0)
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mid_addr = frm->addr.y;
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else if (mid_plane == 1)
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mid_addr = frm->addr.cb;
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else if (mid_plane == 2)
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mid_addr = frm->addr.cr;
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else
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return;
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f_chk_addr = low_addr;
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if (mid_addr + frm->payload[mid_plane] - low_addr >
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high_addr + frm->payload[high_plane] - mid_addr) {
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f_chk_len = frm->payload[low_plane];
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s_chk_addr = mid_addr;
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s_chk_len = high_addr +
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frm->payload[high_plane] - mid_addr;
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} else {
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f_chk_len = mid_addr +
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frm->payload[mid_plane] - low_addr;
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s_chk_addr = high_addr;
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s_chk_len = frm->payload[high_plane];
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}
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}
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pr_debug("f_addr = 0x%08x, f_len = %d, s_addr = 0x%08x, s_len = %d\n",
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f_chk_addr, f_chk_len, s_chk_addr, s_chk_len);
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}
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int gsc_try_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f)
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{
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struct gsc_dev *gsc = ctx->gsc_dev;
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struct gsc_variant *variant = gsc->variant;
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struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
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const struct gsc_fmt *fmt;
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u32 max_w, max_h, mod_x, mod_y;
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u32 min_w, min_h, tmp_w, tmp_h;
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int i;
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pr_debug("user put w: %d, h: %d", pix_mp->width, pix_mp->height);
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fmt = find_fmt(&pix_mp->pixelformat, NULL, 0);
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if (!fmt) {
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pr_err("pixelformat format (0x%X) invalid\n",
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pix_mp->pixelformat);
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return -EINVAL;
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}
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if (pix_mp->field == V4L2_FIELD_ANY)
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pix_mp->field = V4L2_FIELD_NONE;
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else if (pix_mp->field != V4L2_FIELD_NONE) {
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pr_debug("Not supported field order(%d)\n", pix_mp->field);
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return -EINVAL;
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}
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max_w = variant->pix_max->target_rot_dis_w;
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max_h = variant->pix_max->target_rot_dis_h;
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mod_x = ffs(variant->pix_align->org_w) - 1;
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if (is_yuv420(fmt->color))
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mod_y = ffs(variant->pix_align->org_h) - 1;
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else
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mod_y = ffs(variant->pix_align->org_h) - 2;
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if (V4L2_TYPE_IS_OUTPUT(f->type)) {
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min_w = variant->pix_min->org_w;
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min_h = variant->pix_min->org_h;
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} else {
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min_w = variant->pix_min->target_rot_dis_w;
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min_h = variant->pix_min->target_rot_dis_h;
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pix_mp->colorspace = ctx->out_colorspace;
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}
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pr_debug("mod_x: %d, mod_y: %d, max_w: %d, max_h = %d",
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mod_x, mod_y, max_w, max_h);
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/* To check if image size is modified to adjust parameter against
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hardware abilities */
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tmp_w = pix_mp->width;
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tmp_h = pix_mp->height;
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v4l_bound_align_image(&pix_mp->width, min_w, max_w, mod_x,
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&pix_mp->height, min_h, max_h, mod_y, 0);
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if (tmp_w != pix_mp->width || tmp_h != pix_mp->height)
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pr_debug("Image size has been modified from %dx%d to %dx%d\n",
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tmp_w, tmp_h, pix_mp->width, pix_mp->height);
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pix_mp->num_planes = fmt->num_planes;
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if (V4L2_TYPE_IS_OUTPUT(f->type))
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ctx->out_colorspace = pix_mp->colorspace;
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for (i = 0; i < pix_mp->num_planes; ++i) {
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struct v4l2_plane_pix_format *plane_fmt = &pix_mp->plane_fmt[i];
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u32 bpl = plane_fmt->bytesperline;
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if (fmt->num_comp == 1 && /* Packed */
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(bpl == 0 || (bpl * 8 / fmt->depth[i]) < pix_mp->width))
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bpl = pix_mp->width * fmt->depth[i] / 8;
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if (fmt->num_comp > 1 && /* Planar */
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(bpl == 0 || bpl < pix_mp->width))
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bpl = pix_mp->width;
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if (i != 0 && fmt->num_comp == 3)
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bpl /= 2;
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plane_fmt->bytesperline = bpl;
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plane_fmt->sizeimage = max(pix_mp->width * pix_mp->height *
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fmt->depth[i] / 8,
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plane_fmt->sizeimage);
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pr_debug("[%d]: bpl: %d, sizeimage: %d",
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i, bpl, pix_mp->plane_fmt[i].sizeimage);
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}
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return 0;
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}
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int gsc_g_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f)
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{
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struct gsc_frame *frame;
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struct v4l2_pix_format_mplane *pix_mp;
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int i;
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frame = ctx_get_frame(ctx, f->type);
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if (IS_ERR(frame))
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return PTR_ERR(frame);
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pix_mp = &f->fmt.pix_mp;
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pix_mp->width = frame->f_width;
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pix_mp->height = frame->f_height;
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pix_mp->field = V4L2_FIELD_NONE;
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pix_mp->pixelformat = frame->fmt->pixelformat;
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pix_mp->num_planes = frame->fmt->num_planes;
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pix_mp->colorspace = ctx->out_colorspace;
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for (i = 0; i < pix_mp->num_planes; ++i) {
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pix_mp->plane_fmt[i].bytesperline = (frame->f_width *
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frame->fmt->depth[i]) / 8;
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pix_mp->plane_fmt[i].sizeimage =
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pix_mp->plane_fmt[i].bytesperline * frame->f_height;
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}
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return 0;
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}
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void gsc_check_crop_change(u32 tmp_w, u32 tmp_h, u32 *w, u32 *h)
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{
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if (tmp_w != *w || tmp_h != *h) {
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pr_info("Cropped size has been modified from %dx%d to %dx%d",
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*w, *h, tmp_w, tmp_h);
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*w = tmp_w;
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*h = tmp_h;
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}
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}
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int gsc_try_selection(struct gsc_ctx *ctx, struct v4l2_selection *s)
|
{
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struct gsc_frame *f;
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struct gsc_dev *gsc = ctx->gsc_dev;
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struct gsc_variant *variant = gsc->variant;
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u32 mod_x = 0, mod_y = 0, tmp_w, tmp_h;
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u32 min_w, min_h, max_w, max_h;
|
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if (s->r.top < 0 || s->r.left < 0) {
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pr_err("doesn't support negative values for top & left\n");
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return -EINVAL;
|
}
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pr_debug("user put w: %d, h: %d", s->r.width, s->r.height);
|
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if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
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f = &ctx->d_frame;
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else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
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f = &ctx->s_frame;
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else
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return -EINVAL;
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max_w = f->f_width;
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max_h = f->f_height;
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tmp_w = s->r.width;
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tmp_h = s->r.height;
|
|
if (V4L2_TYPE_IS_OUTPUT(s->type)) {
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if ((is_yuv422(f->fmt->color) && f->fmt->num_comp == 1) ||
|
is_rgb(f->fmt->color))
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min_w = 32;
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else
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min_w = 64;
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if ((is_yuv422(f->fmt->color) && f->fmt->num_comp == 3) ||
|
is_yuv420(f->fmt->color))
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min_h = 32;
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else
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min_h = 16;
|
} else {
|
if (is_yuv420(f->fmt->color) || is_yuv422(f->fmt->color))
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mod_x = ffs(variant->pix_align->target_w) - 1;
|
if (is_yuv420(f->fmt->color))
|
mod_y = ffs(variant->pix_align->target_h) - 1;
|
if (ctx->gsc_ctrls.rotate->val == 90 ||
|
ctx->gsc_ctrls.rotate->val == 270) {
|
max_w = f->f_height;
|
max_h = f->f_width;
|
min_w = variant->pix_min->target_rot_en_w;
|
min_h = variant->pix_min->target_rot_en_h;
|
tmp_w = s->r.height;
|
tmp_h = s->r.width;
|
} else {
|
min_w = variant->pix_min->target_rot_dis_w;
|
min_h = variant->pix_min->target_rot_dis_h;
|
}
|
}
|
pr_debug("mod_x: %d, mod_y: %d, min_w: %d, min_h = %d",
|
mod_x, mod_y, min_w, min_h);
|
pr_debug("tmp_w : %d, tmp_h : %d", tmp_w, tmp_h);
|
|
v4l_bound_align_image(&tmp_w, min_w, max_w, mod_x,
|
&tmp_h, min_h, max_h, mod_y, 0);
|
|
if (V4L2_TYPE_IS_CAPTURE(s->type) &&
|
(ctx->gsc_ctrls.rotate->val == 90 ||
|
ctx->gsc_ctrls.rotate->val == 270))
|
gsc_check_crop_change(tmp_h, tmp_w,
|
&s->r.width, &s->r.height);
|
else
|
gsc_check_crop_change(tmp_w, tmp_h,
|
&s->r.width, &s->r.height);
|
|
|
/* adjust left/top if cropping rectangle is out of bounds */
|
/* Need to add code to algin left value with 2's multiple */
|
if (s->r.left + tmp_w > max_w)
|
s->r.left = max_w - tmp_w;
|
if (s->r.top + tmp_h > max_h)
|
s->r.top = max_h - tmp_h;
|
|
if ((is_yuv420(f->fmt->color) || is_yuv422(f->fmt->color)) &&
|
s->r.left & 1)
|
s->r.left -= 1;
|
|
pr_debug("Aligned l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
|
s->r.left, s->r.top, s->r.width, s->r.height, max_w, max_h);
|
|
return 0;
|
}
|
|
int gsc_check_scaler_ratio(struct gsc_variant *var, int sw, int sh, int dw,
|
int dh, int rot, int out_path)
|
{
|
int tmp_w, tmp_h, sc_down_max;
|
|
if (out_path == GSC_DMA)
|
sc_down_max = var->sc_down_max;
|
else
|
sc_down_max = var->local_sc_down;
|
|
if (rot == 90 || rot == 270) {
|
tmp_w = dh;
|
tmp_h = dw;
|
} else {
|
tmp_w = dw;
|
tmp_h = dh;
|
}
|
|
if ((sw / tmp_w) > sc_down_max ||
|
(sh / tmp_h) > sc_down_max ||
|
(tmp_w / sw) > var->sc_up_max ||
|
(tmp_h / sh) > var->sc_up_max)
|
return -EINVAL;
|
|
return 0;
|
}
|
|
int gsc_set_scaler_info(struct gsc_ctx *ctx)
|
{
|
struct gsc_scaler *sc = &ctx->scaler;
|
struct gsc_frame *s_frame = &ctx->s_frame;
|
struct gsc_frame *d_frame = &ctx->d_frame;
|
struct gsc_variant *variant = ctx->gsc_dev->variant;
|
struct device *dev = &ctx->gsc_dev->pdev->dev;
|
int tx, ty;
|
int ret;
|
|
ret = gsc_check_scaler_ratio(variant, s_frame->crop.width,
|
s_frame->crop.height, d_frame->crop.width, d_frame->crop.height,
|
ctx->gsc_ctrls.rotate->val, ctx->out_path);
|
if (ret) {
|
pr_err("out of scaler range");
|
return ret;
|
}
|
|
if (ctx->gsc_ctrls.rotate->val == 90 ||
|
ctx->gsc_ctrls.rotate->val == 270) {
|
ty = d_frame->crop.width;
|
tx = d_frame->crop.height;
|
} else {
|
tx = d_frame->crop.width;
|
ty = d_frame->crop.height;
|
}
|
|
if (tx <= 0 || ty <= 0) {
|
dev_err(dev, "Invalid target size: %dx%d", tx, ty);
|
return -EINVAL;
|
}
|
|
ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.width,
|
tx, &sc->pre_hratio);
|
if (ret) {
|
pr_err("Horizontal scale ratio is out of range");
|
return ret;
|
}
|
|
ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.height,
|
ty, &sc->pre_vratio);
|
if (ret) {
|
pr_err("Vertical scale ratio is out of range");
|
return ret;
|
}
|
|
gsc_check_src_scale_info(variant, s_frame, &sc->pre_hratio,
|
tx, ty, &sc->pre_vratio);
|
|
gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio,
|
&sc->pre_shfactor);
|
|
sc->main_hratio = (s_frame->crop.width << 16) / tx;
|
sc->main_vratio = (s_frame->crop.height << 16) / ty;
|
|
pr_debug("scaler input/output size : sx = %d, sy = %d, tx = %d, ty = %d",
|
s_frame->crop.width, s_frame->crop.height, tx, ty);
|
pr_debug("scaler ratio info : pre_shfactor : %d, pre_h : %d",
|
sc->pre_shfactor, sc->pre_hratio);
|
pr_debug("pre_v :%d, main_h : %d, main_v : %d",
|
sc->pre_vratio, sc->main_hratio, sc->main_vratio);
|
|
return 0;
|
}
|
|
static int __gsc_s_ctrl(struct gsc_ctx *ctx, struct v4l2_ctrl *ctrl)
|
{
|
struct gsc_dev *gsc = ctx->gsc_dev;
|
struct gsc_variant *variant = gsc->variant;
|
unsigned int flags = GSC_DST_FMT | GSC_SRC_FMT;
|
int ret = 0;
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
|
return 0;
|
|
switch (ctrl->id) {
|
case V4L2_CID_HFLIP:
|
ctx->hflip = ctrl->val;
|
break;
|
|
case V4L2_CID_VFLIP:
|
ctx->vflip = ctrl->val;
|
break;
|
|
case V4L2_CID_ROTATE:
|
if ((ctx->state & flags) == flags) {
|
ret = gsc_check_scaler_ratio(variant,
|
ctx->s_frame.crop.width,
|
ctx->s_frame.crop.height,
|
ctx->d_frame.crop.width,
|
ctx->d_frame.crop.height,
|
ctx->gsc_ctrls.rotate->val,
|
ctx->out_path);
|
|
if (ret)
|
return -EINVAL;
|
}
|
|
ctx->rotation = ctrl->val;
|
break;
|
|
case V4L2_CID_ALPHA_COMPONENT:
|
ctx->d_frame.alpha = ctrl->val;
|
break;
|
}
|
|
ctx->state |= GSC_PARAMS;
|
return 0;
|
}
|
|
static int gsc_s_ctrl(struct v4l2_ctrl *ctrl)
|
{
|
struct gsc_ctx *ctx = ctrl_to_ctx(ctrl);
|
unsigned long flags;
|
int ret;
|
|
spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
|
ret = __gsc_s_ctrl(ctx, ctrl);
|
spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
|
|
return ret;
|
}
|
|
static const struct v4l2_ctrl_ops gsc_ctrl_ops = {
|
.s_ctrl = gsc_s_ctrl,
|
};
|
|
int gsc_ctrls_create(struct gsc_ctx *ctx)
|
{
|
if (ctx->ctrls_rdy) {
|
pr_err("Control handler of this context was created already");
|
return 0;
|
}
|
|
v4l2_ctrl_handler_init(&ctx->ctrl_handler, GSC_MAX_CTRL_NUM);
|
|
ctx->gsc_ctrls.rotate = v4l2_ctrl_new_std(&ctx->ctrl_handler,
|
&gsc_ctrl_ops, V4L2_CID_ROTATE, 0, 270, 90, 0);
|
ctx->gsc_ctrls.hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler,
|
&gsc_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
|
ctx->gsc_ctrls.vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler,
|
&gsc_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
|
ctx->gsc_ctrls.global_alpha = v4l2_ctrl_new_std(&ctx->ctrl_handler,
|
&gsc_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 0);
|
|
ctx->ctrls_rdy = ctx->ctrl_handler.error == 0;
|
|
if (ctx->ctrl_handler.error) {
|
int err = ctx->ctrl_handler.error;
|
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
|
pr_err("Failed to create G-Scaler control handlers");
|
return err;
|
}
|
|
return 0;
|
}
|
|
void gsc_ctrls_delete(struct gsc_ctx *ctx)
|
{
|
if (ctx->ctrls_rdy) {
|
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
|
ctx->ctrls_rdy = false;
|
}
|
}
|
|
/* The color format (num_comp, num_planes) must be already configured. */
|
int gsc_prepare_addr(struct gsc_ctx *ctx, struct vb2_buffer *vb,
|
struct gsc_frame *frame, struct gsc_addr *addr)
|
{
|
int ret = 0;
|
u32 pix_size;
|
|
if ((vb == NULL) || (frame == NULL))
|
return -EINVAL;
|
|
pix_size = frame->f_width * frame->f_height;
|
|
pr_debug("num_planes= %d, num_comp= %d, pix_size= %d",
|
frame->fmt->num_planes, frame->fmt->num_comp, pix_size);
|
|
addr->y = vb2_dma_contig_plane_dma_addr(vb, 0);
|
|
if (frame->fmt->num_planes == 1) {
|
switch (frame->fmt->num_comp) {
|
case 1:
|
addr->cb = 0;
|
addr->cr = 0;
|
break;
|
case 2:
|
/* decompose Y into Y/Cb */
|
addr->cb = (dma_addr_t)(addr->y + pix_size);
|
addr->cr = 0;
|
break;
|
case 3:
|
/* decompose Y into Y/Cb/Cr */
|
addr->cb = (dma_addr_t)(addr->y + pix_size);
|
if (GSC_YUV420 == frame->fmt->color)
|
addr->cr = (dma_addr_t)(addr->cb
|
+ (pix_size >> 2));
|
else /* 422 */
|
addr->cr = (dma_addr_t)(addr->cb
|
+ (pix_size >> 1));
|
break;
|
default:
|
pr_err("Invalid the number of color planes");
|
return -EINVAL;
|
}
|
} else {
|
if (frame->fmt->num_planes >= 2)
|
addr->cb = vb2_dma_contig_plane_dma_addr(vb, 1);
|
|
if (frame->fmt->num_planes == 3)
|
addr->cr = vb2_dma_contig_plane_dma_addr(vb, 2);
|
}
|
|
if ((frame->fmt->pixelformat == V4L2_PIX_FMT_VYUY) ||
|
(frame->fmt->pixelformat == V4L2_PIX_FMT_YVYU) ||
|
(frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420) ||
|
(frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420M))
|
swap(addr->cb, addr->cr);
|
|
pr_debug("ADDR: y= %pad cb= %pad cr= %pad ret= %d",
|
&addr->y, &addr->cb, &addr->cr, ret);
|
|
return ret;
|
}
|
|
static irqreturn_t gsc_irq_handler(int irq, void *priv)
|
{
|
struct gsc_dev *gsc = priv;
|
struct gsc_ctx *ctx;
|
int gsc_irq;
|
|
gsc_irq = gsc_hw_get_irq_status(gsc);
|
gsc_hw_clear_irq(gsc, gsc_irq);
|
|
if (gsc_irq == GSC_IRQ_OVERRUN) {
|
pr_err("Local path input over-run interrupt has occurred!\n");
|
return IRQ_HANDLED;
|
}
|
|
spin_lock(&gsc->slock);
|
|
if (test_and_clear_bit(ST_M2M_PEND, &gsc->state)) {
|
|
gsc_hw_enable_control(gsc, false);
|
|
if (test_and_clear_bit(ST_M2M_SUSPENDING, &gsc->state)) {
|
set_bit(ST_M2M_SUSPENDED, &gsc->state);
|
wake_up(&gsc->irq_queue);
|
goto isr_unlock;
|
}
|
ctx = v4l2_m2m_get_curr_priv(gsc->m2m.m2m_dev);
|
|
if (!ctx || !ctx->m2m_ctx)
|
goto isr_unlock;
|
|
spin_unlock(&gsc->slock);
|
gsc_m2m_job_finish(ctx, VB2_BUF_STATE_DONE);
|
|
/* wake_up job_abort, stop_streaming */
|
if (ctx->state & GSC_CTX_STOP_REQ) {
|
ctx->state &= ~GSC_CTX_STOP_REQ;
|
wake_up(&gsc->irq_queue);
|
}
|
return IRQ_HANDLED;
|
}
|
|
isr_unlock:
|
spin_unlock(&gsc->slock);
|
return IRQ_HANDLED;
|
}
|
|
static struct gsc_pix_max gsc_v_100_max = {
|
.org_scaler_bypass_w = 8192,
|
.org_scaler_bypass_h = 8192,
|
.org_scaler_input_w = 4800,
|
.org_scaler_input_h = 3344,
|
.real_rot_dis_w = 4800,
|
.real_rot_dis_h = 3344,
|
.real_rot_en_w = 2047,
|
.real_rot_en_h = 2047,
|
.target_rot_dis_w = 4800,
|
.target_rot_dis_h = 3344,
|
.target_rot_en_w = 2016,
|
.target_rot_en_h = 2016,
|
};
|
|
static struct gsc_pix_max gsc_v_5250_max = {
|
.org_scaler_bypass_w = 8192,
|
.org_scaler_bypass_h = 8192,
|
.org_scaler_input_w = 4800,
|
.org_scaler_input_h = 3344,
|
.real_rot_dis_w = 4800,
|
.real_rot_dis_h = 3344,
|
.real_rot_en_w = 2016,
|
.real_rot_en_h = 2016,
|
.target_rot_dis_w = 4800,
|
.target_rot_dis_h = 3344,
|
.target_rot_en_w = 2016,
|
.target_rot_en_h = 2016,
|
};
|
|
static struct gsc_pix_max gsc_v_5420_max = {
|
.org_scaler_bypass_w = 8192,
|
.org_scaler_bypass_h = 8192,
|
.org_scaler_input_w = 4800,
|
.org_scaler_input_h = 3344,
|
.real_rot_dis_w = 4800,
|
.real_rot_dis_h = 3344,
|
.real_rot_en_w = 2048,
|
.real_rot_en_h = 2048,
|
.target_rot_dis_w = 4800,
|
.target_rot_dis_h = 3344,
|
.target_rot_en_w = 2016,
|
.target_rot_en_h = 2016,
|
};
|
|
static struct gsc_pix_max gsc_v_5433_max = {
|
.org_scaler_bypass_w = 8192,
|
.org_scaler_bypass_h = 8192,
|
.org_scaler_input_w = 4800,
|
.org_scaler_input_h = 3344,
|
.real_rot_dis_w = 4800,
|
.real_rot_dis_h = 3344,
|
.real_rot_en_w = 2047,
|
.real_rot_en_h = 2047,
|
.target_rot_dis_w = 4800,
|
.target_rot_dis_h = 3344,
|
.target_rot_en_w = 2016,
|
.target_rot_en_h = 2016,
|
};
|
|
static struct gsc_pix_min gsc_v_100_min = {
|
.org_w = 64,
|
.org_h = 32,
|
.real_w = 64,
|
.real_h = 32,
|
.target_rot_dis_w = 64,
|
.target_rot_dis_h = 32,
|
.target_rot_en_w = 32,
|
.target_rot_en_h = 16,
|
};
|
|
static struct gsc_pix_align gsc_v_100_align = {
|
.org_h = 16,
|
.org_w = 16, /* yuv420 : 16, others : 8 */
|
.offset_h = 2, /* yuv420/422 : 2, others : 1 */
|
.real_w = 16, /* yuv420/422 : 4~16, others : 2~8 */
|
.real_h = 16, /* yuv420 : 4~16, others : 1 */
|
.target_w = 2, /* yuv420/422 : 2, others : 1 */
|
.target_h = 2, /* yuv420 : 2, others : 1 */
|
};
|
|
static struct gsc_variant gsc_v_100_variant = {
|
.pix_max = &gsc_v_100_max,
|
.pix_min = &gsc_v_100_min,
|
.pix_align = &gsc_v_100_align,
|
.in_buf_cnt = 32,
|
.out_buf_cnt = 32,
|
.sc_up_max = 8,
|
.sc_down_max = 16,
|
.poly_sc_down_max = 4,
|
.pre_sc_down_max = 4,
|
.local_sc_down = 2,
|
};
|
|
static struct gsc_variant gsc_v_5250_variant = {
|
.pix_max = &gsc_v_5250_max,
|
.pix_min = &gsc_v_100_min,
|
.pix_align = &gsc_v_100_align,
|
.in_buf_cnt = 32,
|
.out_buf_cnt = 32,
|
.sc_up_max = 8,
|
.sc_down_max = 16,
|
.poly_sc_down_max = 4,
|
.pre_sc_down_max = 4,
|
.local_sc_down = 2,
|
};
|
|
static struct gsc_variant gsc_v_5420_variant = {
|
.pix_max = &gsc_v_5420_max,
|
.pix_min = &gsc_v_100_min,
|
.pix_align = &gsc_v_100_align,
|
.in_buf_cnt = 32,
|
.out_buf_cnt = 32,
|
.sc_up_max = 8,
|
.sc_down_max = 16,
|
.poly_sc_down_max = 4,
|
.pre_sc_down_max = 4,
|
.local_sc_down = 2,
|
};
|
|
static struct gsc_variant gsc_v_5433_variant = {
|
.pix_max = &gsc_v_5433_max,
|
.pix_min = &gsc_v_100_min,
|
.pix_align = &gsc_v_100_align,
|
.in_buf_cnt = 32,
|
.out_buf_cnt = 32,
|
.sc_up_max = 8,
|
.sc_down_max = 16,
|
.poly_sc_down_max = 4,
|
.pre_sc_down_max = 4,
|
.local_sc_down = 2,
|
};
|
|
static struct gsc_driverdata gsc_v_100_drvdata = {
|
.variant = {
|
[0] = &gsc_v_100_variant,
|
[1] = &gsc_v_100_variant,
|
[2] = &gsc_v_100_variant,
|
[3] = &gsc_v_100_variant,
|
},
|
.num_entities = 4,
|
.clk_names = { "gscl" },
|
.num_clocks = 1,
|
};
|
|
static struct gsc_driverdata gsc_v_5250_drvdata = {
|
.variant = {
|
[0] = &gsc_v_5250_variant,
|
[1] = &gsc_v_5250_variant,
|
[2] = &gsc_v_5250_variant,
|
[3] = &gsc_v_5250_variant,
|
},
|
.num_entities = 4,
|
.clk_names = { "gscl" },
|
.num_clocks = 1,
|
};
|
|
static struct gsc_driverdata gsc_v_5420_drvdata = {
|
.variant = {
|
[0] = &gsc_v_5420_variant,
|
[1] = &gsc_v_5420_variant,
|
},
|
.num_entities = 2,
|
.clk_names = { "gscl" },
|
.num_clocks = 1,
|
};
|
|
static struct gsc_driverdata gsc_5433_drvdata = {
|
.variant = {
|
[0] = &gsc_v_5433_variant,
|
[1] = &gsc_v_5433_variant,
|
[2] = &gsc_v_5433_variant,
|
},
|
.num_entities = 3,
|
.clk_names = { "pclk", "aclk", "aclk_xiu", "aclk_gsclbend" },
|
.num_clocks = 4,
|
};
|
|
static const struct of_device_id exynos_gsc_match[] = {
|
{
|
.compatible = "samsung,exynos5250-gsc",
|
.data = &gsc_v_5250_drvdata,
|
},
|
{
|
.compatible = "samsung,exynos5420-gsc",
|
.data = &gsc_v_5420_drvdata,
|
},
|
{
|
.compatible = "samsung,exynos5433-gsc",
|
.data = &gsc_5433_drvdata,
|
},
|
{
|
.compatible = "samsung,exynos5-gsc",
|
.data = &gsc_v_100_drvdata,
|
},
|
{},
|
};
|
MODULE_DEVICE_TABLE(of, exynos_gsc_match);
|
|
static int gsc_probe(struct platform_device *pdev)
|
{
|
struct gsc_dev *gsc;
|
struct resource *res;
|
struct device *dev = &pdev->dev;
|
const struct gsc_driverdata *drv_data = of_device_get_match_data(dev);
|
int ret;
|
int i;
|
|
gsc = devm_kzalloc(dev, sizeof(struct gsc_dev), GFP_KERNEL);
|
if (!gsc)
|
return -ENOMEM;
|
|
ret = of_alias_get_id(pdev->dev.of_node, "gsc");
|
if (ret < 0)
|
return ret;
|
|
if (drv_data == &gsc_v_100_drvdata)
|
dev_info(dev, "compatible 'exynos5-gsc' is deprecated\n");
|
|
gsc->id = ret;
|
if (gsc->id >= drv_data->num_entities) {
|
dev_err(dev, "Invalid platform device id: %d\n", gsc->id);
|
return -EINVAL;
|
}
|
|
gsc->num_clocks = drv_data->num_clocks;
|
gsc->variant = drv_data->variant[gsc->id];
|
gsc->pdev = pdev;
|
|
init_waitqueue_head(&gsc->irq_queue);
|
spin_lock_init(&gsc->slock);
|
mutex_init(&gsc->lock);
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
gsc->regs = devm_ioremap_resource(dev, res);
|
if (IS_ERR(gsc->regs))
|
return PTR_ERR(gsc->regs);
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
if (!res) {
|
dev_err(dev, "failed to get IRQ resource\n");
|
return -ENXIO;
|
}
|
|
for (i = 0; i < gsc->num_clocks; i++) {
|
gsc->clock[i] = devm_clk_get(dev, drv_data->clk_names[i]);
|
if (IS_ERR(gsc->clock[i])) {
|
dev_err(dev, "failed to get clock: %s\n",
|
drv_data->clk_names[i]);
|
return PTR_ERR(gsc->clock[i]);
|
}
|
}
|
|
for (i = 0; i < gsc->num_clocks; i++) {
|
ret = clk_prepare_enable(gsc->clock[i]);
|
if (ret) {
|
dev_err(dev, "clock prepare failed for clock: %s\n",
|
drv_data->clk_names[i]);
|
while (--i >= 0)
|
clk_disable_unprepare(gsc->clock[i]);
|
return ret;
|
}
|
}
|
|
ret = devm_request_irq(dev, res->start, gsc_irq_handler,
|
0, pdev->name, gsc);
|
if (ret) {
|
dev_err(dev, "failed to install irq (%d)\n", ret);
|
goto err_clk;
|
}
|
|
ret = v4l2_device_register(dev, &gsc->v4l2_dev);
|
if (ret)
|
goto err_clk;
|
|
ret = gsc_register_m2m_device(gsc);
|
if (ret)
|
goto err_v4l2;
|
|
platform_set_drvdata(pdev, gsc);
|
|
gsc_hw_set_sw_reset(gsc);
|
gsc_wait_reset(gsc);
|
|
vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
|
|
dev_dbg(dev, "gsc-%d registered successfully\n", gsc->id);
|
|
pm_runtime_set_active(dev);
|
pm_runtime_enable(dev);
|
|
return 0;
|
|
err_v4l2:
|
v4l2_device_unregister(&gsc->v4l2_dev);
|
err_clk:
|
for (i = gsc->num_clocks - 1; i >= 0; i--)
|
clk_disable_unprepare(gsc->clock[i]);
|
return ret;
|
}
|
|
static int gsc_remove(struct platform_device *pdev)
|
{
|
struct gsc_dev *gsc = platform_get_drvdata(pdev);
|
int i;
|
|
pm_runtime_get_sync(&pdev->dev);
|
|
gsc_unregister_m2m_device(gsc);
|
v4l2_device_unregister(&gsc->v4l2_dev);
|
|
vb2_dma_contig_clear_max_seg_size(&pdev->dev);
|
for (i = 0; i < gsc->num_clocks; i++)
|
clk_disable_unprepare(gsc->clock[i]);
|
|
pm_runtime_put_noidle(&pdev->dev);
|
pm_runtime_disable(&pdev->dev);
|
|
dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name);
|
return 0;
|
}
|
|
#ifdef CONFIG_PM
|
static int gsc_m2m_suspend(struct gsc_dev *gsc)
|
{
|
unsigned long flags;
|
int timeout;
|
|
spin_lock_irqsave(&gsc->slock, flags);
|
if (!gsc_m2m_pending(gsc)) {
|
spin_unlock_irqrestore(&gsc->slock, flags);
|
return 0;
|
}
|
clear_bit(ST_M2M_SUSPENDED, &gsc->state);
|
set_bit(ST_M2M_SUSPENDING, &gsc->state);
|
spin_unlock_irqrestore(&gsc->slock, flags);
|
|
timeout = wait_event_timeout(gsc->irq_queue,
|
test_bit(ST_M2M_SUSPENDED, &gsc->state),
|
GSC_SHUTDOWN_TIMEOUT);
|
|
clear_bit(ST_M2M_SUSPENDING, &gsc->state);
|
return timeout == 0 ? -EAGAIN : 0;
|
}
|
|
static void gsc_m2m_resume(struct gsc_dev *gsc)
|
{
|
struct gsc_ctx *ctx;
|
unsigned long flags;
|
|
spin_lock_irqsave(&gsc->slock, flags);
|
/* Clear for full H/W setup in first run after resume */
|
ctx = gsc->m2m.ctx;
|
gsc->m2m.ctx = NULL;
|
spin_unlock_irqrestore(&gsc->slock, flags);
|
|
if (test_and_clear_bit(ST_M2M_SUSPENDED, &gsc->state))
|
gsc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
|
}
|
|
static int gsc_runtime_resume(struct device *dev)
|
{
|
struct gsc_dev *gsc = dev_get_drvdata(dev);
|
int ret = 0;
|
int i;
|
|
pr_debug("gsc%d: state: 0x%lx\n", gsc->id, gsc->state);
|
|
for (i = 0; i < gsc->num_clocks; i++) {
|
ret = clk_prepare_enable(gsc->clock[i]);
|
if (ret) {
|
while (--i >= 0)
|
clk_disable_unprepare(gsc->clock[i]);
|
return ret;
|
}
|
}
|
|
gsc_hw_set_sw_reset(gsc);
|
gsc_wait_reset(gsc);
|
gsc_m2m_resume(gsc);
|
|
return 0;
|
}
|
|
static int gsc_runtime_suspend(struct device *dev)
|
{
|
struct gsc_dev *gsc = dev_get_drvdata(dev);
|
int ret = 0;
|
int i;
|
|
ret = gsc_m2m_suspend(gsc);
|
if (ret)
|
return ret;
|
|
for (i = gsc->num_clocks - 1; i >= 0; i--)
|
clk_disable_unprepare(gsc->clock[i]);
|
|
pr_debug("gsc%d: state: 0x%lx\n", gsc->id, gsc->state);
|
return ret;
|
}
|
#endif
|
|
static const struct dev_pm_ops gsc_pm_ops = {
|
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
|
pm_runtime_force_resume)
|
SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL)
|
};
|
|
static struct platform_driver gsc_driver = {
|
.probe = gsc_probe,
|
.remove = gsc_remove,
|
.driver = {
|
.name = GSC_MODULE_NAME,
|
.pm = &gsc_pm_ops,
|
.of_match_table = exynos_gsc_match,
|
}
|
};
|
|
module_platform_driver(gsc_driver);
|
|
MODULE_AUTHOR("Hyunwong Kim <khw0178.kim@samsung.com>");
|
MODULE_DESCRIPTION("Samsung EXYNOS5 Soc series G-Scaler driver");
|
MODULE_LICENSE("GPL");
|
