// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2019 MediaTek Inc.
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* Author: Xia Jiang <xia.jiang@mediatek.com>
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*
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*/
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <media/videobuf2-core.h>
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#include <media/videobuf2-dma-contig.h>
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#include "mtk_jpeg_enc_hw.h"
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static const struct mtk_jpeg_enc_qlt mtk_jpeg_enc_quality[] = {
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{.quality_param = 34, .hardware_value = JPEG_ENC_QUALITY_Q34},
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{.quality_param = 39, .hardware_value = JPEG_ENC_QUALITY_Q39},
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{.quality_param = 48, .hardware_value = JPEG_ENC_QUALITY_Q48},
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{.quality_param = 60, .hardware_value = JPEG_ENC_QUALITY_Q60},
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{.quality_param = 64, .hardware_value = JPEG_ENC_QUALITY_Q64},
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{.quality_param = 68, .hardware_value = JPEG_ENC_QUALITY_Q68},
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{.quality_param = 74, .hardware_value = JPEG_ENC_QUALITY_Q74},
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{.quality_param = 80, .hardware_value = JPEG_ENC_QUALITY_Q80},
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{.quality_param = 82, .hardware_value = JPEG_ENC_QUALITY_Q82},
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{.quality_param = 84, .hardware_value = JPEG_ENC_QUALITY_Q84},
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{.quality_param = 87, .hardware_value = JPEG_ENC_QUALITY_Q87},
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{.quality_param = 90, .hardware_value = JPEG_ENC_QUALITY_Q90},
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{.quality_param = 92, .hardware_value = JPEG_ENC_QUALITY_Q92},
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{.quality_param = 95, .hardware_value = JPEG_ENC_QUALITY_Q95},
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{.quality_param = 97, .hardware_value = JPEG_ENC_QUALITY_Q97},
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};
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void mtk_jpeg_enc_reset(void __iomem *base)
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{
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writel(0, base + JPEG_ENC_RSTB);
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writel(JPEG_ENC_RESET_BIT, base + JPEG_ENC_RSTB);
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writel(0, base + JPEG_ENC_CODEC_SEL);
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}
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u32 mtk_jpeg_enc_get_file_size(void __iomem *base)
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{
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return readl(base + JPEG_ENC_DMA_ADDR0) -
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readl(base + JPEG_ENC_DST_ADDR0);
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}
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void mtk_jpeg_enc_start(void __iomem *base)
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{
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u32 value;
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value = readl(base + JPEG_ENC_CTRL);
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value |= JPEG_ENC_CTRL_INT_EN_BIT | JPEG_ENC_CTRL_ENABLE_BIT;
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writel(value, base + JPEG_ENC_CTRL);
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}
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void mtk_jpeg_set_enc_src(struct mtk_jpeg_ctx *ctx, void __iomem *base,
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struct vb2_buffer *src_buf)
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{
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int i;
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dma_addr_t dma_addr;
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for (i = 0; i < src_buf->num_planes; i++) {
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dma_addr = vb2_dma_contig_plane_dma_addr(src_buf, i) +
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src_buf->planes[i].data_offset;
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if (!i)
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writel(dma_addr, base + JPEG_ENC_SRC_LUMA_ADDR);
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else
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writel(dma_addr, base + JPEG_ENC_SRC_CHROMA_ADDR);
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}
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}
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void mtk_jpeg_set_enc_dst(struct mtk_jpeg_ctx *ctx, void __iomem *base,
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struct vb2_buffer *dst_buf)
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{
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dma_addr_t dma_addr;
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size_t size;
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u32 dma_addr_offset;
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u32 dma_addr_offsetmask;
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dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
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dma_addr_offset = ctx->enable_exif ? MTK_JPEG_MAX_EXIF_SIZE : 0;
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dma_addr_offsetmask = dma_addr & JPEG_ENC_DST_ADDR_OFFSET_MASK;
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size = vb2_plane_size(dst_buf, 0);
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writel(dma_addr_offset & ~0xf, base + JPEG_ENC_OFFSET_ADDR);
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writel(dma_addr_offsetmask & 0xf, base + JPEG_ENC_BYTE_OFFSET_MASK);
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writel(dma_addr & ~0xf, base + JPEG_ENC_DST_ADDR0);
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writel((dma_addr + size) & ~0xf, base + JPEG_ENC_STALL_ADDR0);
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}
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void mtk_jpeg_set_enc_params(struct mtk_jpeg_ctx *ctx, void __iomem *base)
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{
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u32 value;
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u32 width = ctx->out_q.enc_crop_rect.width;
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u32 height = ctx->out_q.enc_crop_rect.height;
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u32 enc_format = ctx->out_q.fmt->fourcc;
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u32 bytesperline = ctx->out_q.pix_mp.plane_fmt[0].bytesperline;
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u32 blk_num;
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u32 img_stride;
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u32 mem_stride;
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u32 i, enc_quality;
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value = width << 16 | height;
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writel(value, base + JPEG_ENC_IMG_SIZE);
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if (enc_format == V4L2_PIX_FMT_NV12M ||
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enc_format == V4L2_PIX_FMT_NV21M)
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/*
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* Total 8 x 8 block number of luma and chroma.
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* The number of blocks is counted from 0.
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*/
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blk_num = DIV_ROUND_UP(width, 16) *
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DIV_ROUND_UP(height, 16) * 6 - 1;
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else
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blk_num = DIV_ROUND_UP(width, 16) *
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DIV_ROUND_UP(height, 8) * 4 - 1;
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writel(blk_num, base + JPEG_ENC_BLK_NUM);
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if (enc_format == V4L2_PIX_FMT_NV12M ||
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enc_format == V4L2_PIX_FMT_NV21M) {
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/* 4:2:0 */
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img_stride = round_up(width, 16);
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mem_stride = bytesperline;
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} else {
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/* 4:2:2 */
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img_stride = round_up(width * 2, 32);
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mem_stride = img_stride;
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}
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writel(img_stride, base + JPEG_ENC_IMG_STRIDE);
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writel(mem_stride, base + JPEG_ENC_STRIDE);
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enc_quality = mtk_jpeg_enc_quality[0].hardware_value;
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for (i = 0; i < ARRAY_SIZE(mtk_jpeg_enc_quality); i++) {
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if (ctx->enc_quality <= mtk_jpeg_enc_quality[i].quality_param) {
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enc_quality = mtk_jpeg_enc_quality[i].hardware_value;
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break;
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}
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}
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writel(enc_quality, base + JPEG_ENC_QUALITY);
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value = readl(base + JPEG_ENC_CTRL);
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value &= ~JPEG_ENC_CTRL_YUV_FORMAT_MASK;
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value |= (ctx->out_q.fmt->hw_format & 3) << 3;
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if (ctx->enable_exif)
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value |= JPEG_ENC_CTRL_FILE_FORMAT_BIT;
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else
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value &= ~JPEG_ENC_CTRL_FILE_FORMAT_BIT;
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if (ctx->restart_interval)
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value |= JPEG_ENC_CTRL_RESTART_EN_BIT;
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else
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value &= ~JPEG_ENC_CTRL_RESTART_EN_BIT;
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writel(value, base + JPEG_ENC_CTRL);
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writel(ctx->restart_interval, base + JPEG_ENC_RST_MCU_NUM);
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}
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