drivers/media/platform/verisilicon/hantro_h1_jpeg_enc.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Hantro VPU codec driver
   4  *
   5  * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
   6  */
   7
   8 #include <linux/unaligned.h>
   9 #include <media/v4l2-mem2mem.h>
  10 #include "hantro_jpeg.h"
  11 #include "hantro.h"
  12 #include "hantro_v4l2.h"
  13 #include "hantro_hw.h"
  14 #include "hantro_h1_regs.h"
  15
  16 #define H1_JPEG_QUANT_TABLE_COUNT 16
  17
  18 static void hantro_h1_set_src_img_ctrl(struct hantro_dev *vpu,
  19                                        struct hantro_ctx *ctx)
  20 {
  21         u32 overfill_r, overfill_b;
  22         u32 reg;
  23
  24         /*
  25          * The format width and height are already macroblock aligned
  26          * by .vidioc_s_fmt_vid_cap_mplane() callback. Destination
  27          * format width and height can be further modified by
  28          * .vidioc_s_selection(), and the width is 4-aligned.
  29          */
  30         overfill_r = ctx->src_fmt.width - ctx->dst_fmt.width;
  31         overfill_b = ctx->src_fmt.height - ctx->dst_fmt.height;
  32
  33         reg = H1_REG_IN_IMG_CTRL_ROW_LEN(ctx->src_fmt.width)
  34                 | H1_REG_IN_IMG_CTRL_OVRFLR_D4(overfill_r / 4)
  35                 | H1_REG_IN_IMG_CTRL_OVRFLB(overfill_b)
  36                 | H1_REG_IN_IMG_CTRL_FMT(ctx->vpu_src_fmt->enc_fmt);
  37         vepu_write_relaxed(vpu, reg, H1_REG_IN_IMG_CTRL);
  38 }
  39
  40 static void hantro_h1_jpeg_enc_set_buffers(struct hantro_dev *vpu,
  41                                            struct hantro_ctx *ctx,
  42                                            struct vb2_buffer *src_buf,
  43                                            struct vb2_buffer *dst_buf)
  44 {
  45         struct v4l2_pix_format_mplane *pix_fmt = &ctx->src_fmt;
  46         dma_addr_t src[3];
  47         u32 size_left;
  48
  49         size_left = vb2_plane_size(dst_buf, 0) - ctx->vpu_dst_fmt->header_size;
  50         if (WARN_ON(vb2_plane_size(dst_buf, 0) < ctx->vpu_dst_fmt->header_size))
  51                 size_left = 0;
  52
  53         WARN_ON(pix_fmt->num_planes > 3);
  54
  55         vepu_write_relaxed(vpu, vb2_dma_contig_plane_dma_addr(dst_buf, 0) +
  56                                 ctx->vpu_dst_fmt->header_size,
  57                            H1_REG_ADDR_OUTPUT_STREAM);
  58         vepu_write_relaxed(vpu, size_left, H1_REG_STR_BUF_LIMIT);
  59
  60         if (pix_fmt->num_planes == 1) {
  61                 src[0] = vb2_dma_contig_plane_dma_addr(src_buf, 0);
  62                 /* single plane formats we supported are all interlaced */
  63                 vepu_write_relaxed(vpu, src[0], H1_REG_ADDR_IN_PLANE_0);
  64         } else if (pix_fmt->num_planes == 2) {
  65                 src[0] = vb2_dma_contig_plane_dma_addr(src_buf, 0);
  66                 src[1] = vb2_dma_contig_plane_dma_addr(src_buf, 1);
  67                 vepu_write_relaxed(vpu, src[0], H1_REG_ADDR_IN_PLANE_0);
  68                 vepu_write_relaxed(vpu, src[1], H1_REG_ADDR_IN_PLANE_1);
  69         } else {
  70                 src[0] = vb2_dma_contig_plane_dma_addr(src_buf, 0);
  71                 src[1] = vb2_dma_contig_plane_dma_addr(src_buf, 1);
  72                 src[2] = vb2_dma_contig_plane_dma_addr(src_buf, 2);
  73                 vepu_write_relaxed(vpu, src[0], H1_REG_ADDR_IN_PLANE_0);
  74                 vepu_write_relaxed(vpu, src[1], H1_REG_ADDR_IN_PLANE_1);
  75                 vepu_write_relaxed(vpu, src[2], H1_REG_ADDR_IN_PLANE_2);
  76         }
  77 }
  78
  79 static void
  80 hantro_h1_jpeg_enc_set_qtable(struct hantro_dev *vpu,
  81                               unsigned char *luma_qtable,
  82                               unsigned char *chroma_qtable)
  83 {
  84         u32 reg, i;
  85         __be32 *luma_qtable_p;
  86         __be32 *chroma_qtable_p;
  87
  88         luma_qtable_p = (__be32 *)luma_qtable;
  89         chroma_qtable_p = (__be32 *)chroma_qtable;
  90
  91         /*
  92          * Quantization table registers must be written in contiguous blocks.
  93          * DO NOT collapse the below two "for" loops into one.
  94          */
  95         for (i = 0; i < H1_JPEG_QUANT_TABLE_COUNT; i++) {
  96                 reg = get_unaligned_be32(&luma_qtable_p[i]);
  97                 vepu_write_relaxed(vpu, reg, H1_REG_JPEG_LUMA_QUAT(i));
  98         }
  99
 100         for (i = 0; i < H1_JPEG_QUANT_TABLE_COUNT; i++) {
 101                 reg = get_unaligned_be32(&chroma_qtable_p[i]);
 102                 vepu_write_relaxed(vpu, reg, H1_REG_JPEG_CHROMA_QUAT(i));
 103         }
 104 }
 105
 106 int hantro_h1_jpeg_enc_run(struct hantro_ctx *ctx)
 107 {
 108         struct hantro_dev *vpu = ctx->dev;
 109         struct vb2_v4l2_buffer *src_buf, *dst_buf;
 110         struct hantro_jpeg_ctx jpeg_ctx;
 111         u32 reg;
 112
 113         src_buf = hantro_get_src_buf(ctx);
 114         dst_buf = hantro_get_dst_buf(ctx);
 115
 116         hantro_start_prepare_run(ctx);
 117
 118         memset(&jpeg_ctx, 0, sizeof(jpeg_ctx));
 119         jpeg_ctx.buffer = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
 120         jpeg_ctx.width = ctx->dst_fmt.width;
 121         jpeg_ctx.height = ctx->dst_fmt.height;
 122         jpeg_ctx.quality = ctx->jpeg_quality;
 123         hantro_jpeg_header_assemble(&jpeg_ctx);
 124
 125         /* Switch to JPEG encoder mode before writing registers */
 126         vepu_write_relaxed(vpu, H1_REG_ENC_CTRL_ENC_MODE_JPEG,
 127                            H1_REG_ENC_CTRL);
 128
 129         hantro_h1_set_src_img_ctrl(vpu, ctx);
 130         hantro_h1_jpeg_enc_set_buffers(vpu, ctx, &src_buf->vb2_buf,
 131                                        &dst_buf->vb2_buf);
 132         hantro_h1_jpeg_enc_set_qtable(vpu, jpeg_ctx.hw_luma_qtable,
 133                                       jpeg_ctx.hw_chroma_qtable);
 134
 135         reg = H1_REG_AXI_CTRL_OUTPUT_SWAP16
 136                 | H1_REG_AXI_CTRL_INPUT_SWAP16
 137                 | H1_REG_AXI_CTRL_BURST_LEN(16)
 138                 | H1_REG_AXI_CTRL_OUTPUT_SWAP32
 139                 | H1_REG_AXI_CTRL_INPUT_SWAP32
 140                 | H1_REG_AXI_CTRL_OUTPUT_SWAP8
 141                 | H1_REG_AXI_CTRL_INPUT_SWAP8;
 142         /* Make sure that all registers are written at this point. */
 143         vepu_write(vpu, reg, H1_REG_AXI_CTRL);
 144
 145         reg = H1_REG_ENC_CTRL_WIDTH(MB_WIDTH(ctx->src_fmt.width))
 146                 | H1_REG_ENC_CTRL_HEIGHT(MB_HEIGHT(ctx->src_fmt.height))
 147                 | H1_REG_ENC_CTRL_ENC_MODE_JPEG
 148                 | H1_REG_ENC_PIC_INTRA
 149                 | H1_REG_ENC_CTRL_EN_BIT;
 150
 151         hantro_end_prepare_run(ctx);
 152
 153         vepu_write(vpu, reg, H1_REG_ENC_CTRL);
 154
 155         return 0;
 156 }
 157
 158 void hantro_h1_jpeg_enc_done(struct hantro_ctx *ctx)
 159 {
 160         struct hantro_dev *vpu = ctx->dev;
 161         u32 bytesused = vepu_read(vpu, H1_REG_STR_BUF_LIMIT) / 8;
 162         struct vb2_v4l2_buffer *dst_buf = hantro_get_dst_buf(ctx);
 163
 164         vb2_set_plane_payload(&dst_buf->vb2_buf, 0,
 165                               ctx->vpu_dst_fmt->header_size + bytesused);
 166 }