1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2019 MediaTek Inc.
4 * Author: Xia Jiang <xia.jiang@mediatek.com>
5 *
6 */
7
8 #include <linux/io.h>
9 #include <linux/kernel.h>
10 #include <media/videobuf2-core.h>
11 #include <media/videobuf2-dma-contig.h>
12
13 #include "mtk_jpeg_enc_hw.h"
14
15 static const struct mtk_jpeg_enc_qlt mtk_jpeg_enc_quality[] = {
16 {.quality_param = 34, .hardware_value = JPEG_ENC_QUALITY_Q34},
17 {.quality_param = 39, .hardware_value = JPEG_ENC_QUALITY_Q39},
18 {.quality_param = 48, .hardware_value = JPEG_ENC_QUALITY_Q48},
19 {.quality_param = 60, .hardware_value = JPEG_ENC_QUALITY_Q60},
20 {.quality_param = 64, .hardware_value = JPEG_ENC_QUALITY_Q64},
21 {.quality_param = 68, .hardware_value = JPEG_ENC_QUALITY_Q68},
22 {.quality_param = 74, .hardware_value = JPEG_ENC_QUALITY_Q74},
23 {.quality_param = 80, .hardware_value = JPEG_ENC_QUALITY_Q80},
24 {.quality_param = 82, .hardware_value = JPEG_ENC_QUALITY_Q82},
25 {.quality_param = 84, .hardware_value = JPEG_ENC_QUALITY_Q84},
26 {.quality_param = 87, .hardware_value = JPEG_ENC_QUALITY_Q87},
27 {.quality_param = 90, .hardware_value = JPEG_ENC_QUALITY_Q90},
28 {.quality_param = 92, .hardware_value = JPEG_ENC_QUALITY_Q92},
29 {.quality_param = 95, .hardware_value = JPEG_ENC_QUALITY_Q95},
30 {.quality_param = 97, .hardware_value = JPEG_ENC_QUALITY_Q97},
31 };
32
mtk_jpeg_enc_reset(void __iomem * base)33 void mtk_jpeg_enc_reset(void __iomem *base)
34 {
35 writel(0, base + JPEG_ENC_RSTB);
36 writel(JPEG_ENC_RESET_BIT, base + JPEG_ENC_RSTB);
37 writel(0, base + JPEG_ENC_CODEC_SEL);
38 }
39
mtk_jpeg_enc_get_file_size(void __iomem * base)40 u32 mtk_jpeg_enc_get_file_size(void __iomem *base)
41 {
42 return readl(base + JPEG_ENC_DMA_ADDR0) -
43 readl(base + JPEG_ENC_DST_ADDR0);
44 }
45
mtk_jpeg_enc_start(void __iomem * base)46 void mtk_jpeg_enc_start(void __iomem *base)
47 {
48 u32 value;
49
50 value = readl(base + JPEG_ENC_CTRL);
51 value |= JPEG_ENC_CTRL_INT_EN_BIT | JPEG_ENC_CTRL_ENABLE_BIT;
52 writel(value, base + JPEG_ENC_CTRL);
53 }
54
mtk_jpeg_set_enc_src(struct mtk_jpeg_ctx * ctx,void __iomem * base,struct vb2_buffer * src_buf)55 void mtk_jpeg_set_enc_src(struct mtk_jpeg_ctx *ctx, void __iomem *base,
56 struct vb2_buffer *src_buf)
57 {
58 int i;
59 dma_addr_t dma_addr;
60
61 for (i = 0; i < src_buf->num_planes; i++) {
62 dma_addr = vb2_dma_contig_plane_dma_addr(src_buf, i) +
63 src_buf->planes[i].data_offset;
64 if (!i)
65 writel(dma_addr, base + JPEG_ENC_SRC_LUMA_ADDR);
66 else
67 writel(dma_addr, base + JPEG_ENC_SRC_CHROMA_ADDR);
68 }
69 }
70
mtk_jpeg_set_enc_dst(struct mtk_jpeg_ctx * ctx,void __iomem * base,struct vb2_buffer * dst_buf)71 void mtk_jpeg_set_enc_dst(struct mtk_jpeg_ctx *ctx, void __iomem *base,
72 struct vb2_buffer *dst_buf)
73 {
74 dma_addr_t dma_addr;
75 size_t size;
76 u32 dma_addr_offset;
77 u32 dma_addr_offsetmask;
78
79 dma_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
80 dma_addr_offset = ctx->enable_exif ? MTK_JPEG_MAX_EXIF_SIZE : 0;
81 dma_addr_offsetmask = dma_addr & JPEG_ENC_DST_ADDR_OFFSET_MASK;
82 size = vb2_plane_size(dst_buf, 0);
83
84 writel(dma_addr_offset & ~0xf, base + JPEG_ENC_OFFSET_ADDR);
85 writel(dma_addr_offsetmask & 0xf, base + JPEG_ENC_BYTE_OFFSET_MASK);
86 writel(dma_addr & ~0xf, base + JPEG_ENC_DST_ADDR0);
87 writel((dma_addr + size) & ~0xf, base + JPEG_ENC_STALL_ADDR0);
88 }
89
mtk_jpeg_set_enc_params(struct mtk_jpeg_ctx * ctx,void __iomem * base)90 void mtk_jpeg_set_enc_params(struct mtk_jpeg_ctx *ctx, void __iomem *base)
91 {
92 u32 value;
93 u32 width = ctx->out_q.enc_crop_rect.width;
94 u32 height = ctx->out_q.enc_crop_rect.height;
95 u32 enc_format = ctx->out_q.fmt->fourcc;
96 u32 bytesperline = ctx->out_q.pix_mp.plane_fmt[0].bytesperline;
97 u32 blk_num;
98 u32 img_stride;
99 u32 mem_stride;
100 u32 i, enc_quality;
101
102 value = width << 16 | height;
103 writel(value, base + JPEG_ENC_IMG_SIZE);
104
105 if (enc_format == V4L2_PIX_FMT_NV12M ||
106 enc_format == V4L2_PIX_FMT_NV21M)
107 /*
108 * Total 8 x 8 block number of luma and chroma.
109 * The number of blocks is counted from 0.
110 */
111 blk_num = DIV_ROUND_UP(width, 16) *
112 DIV_ROUND_UP(height, 16) * 6 - 1;
113 else
114 blk_num = DIV_ROUND_UP(width, 16) *
115 DIV_ROUND_UP(height, 8) * 4 - 1;
116 writel(blk_num, base + JPEG_ENC_BLK_NUM);
117
118 if (enc_format == V4L2_PIX_FMT_NV12M ||
119 enc_format == V4L2_PIX_FMT_NV21M) {
120 /* 4:2:0 */
121 img_stride = round_up(width, 16);
122 mem_stride = bytesperline;
123 } else {
124 /* 4:2:2 */
125 img_stride = round_up(width * 2, 32);
126 mem_stride = img_stride;
127 }
128 writel(img_stride, base + JPEG_ENC_IMG_STRIDE);
129 writel(mem_stride, base + JPEG_ENC_STRIDE);
130
131 enc_quality = mtk_jpeg_enc_quality[0].hardware_value;
132 for (i = 0; i < ARRAY_SIZE(mtk_jpeg_enc_quality); i++) {
133 if (ctx->enc_quality <= mtk_jpeg_enc_quality[i].quality_param) {
134 enc_quality = mtk_jpeg_enc_quality[i].hardware_value;
135 break;
136 }
137 }
138 writel(enc_quality, base + JPEG_ENC_QUALITY);
139
140 value = readl(base + JPEG_ENC_CTRL);
141 value &= ~JPEG_ENC_CTRL_YUV_FORMAT_MASK;
142 value |= (ctx->out_q.fmt->hw_format & 3) << 3;
143 if (ctx->enable_exif)
144 value |= JPEG_ENC_CTRL_FILE_FORMAT_BIT;
145 else
146 value &= ~JPEG_ENC_CTRL_FILE_FORMAT_BIT;
147 if (ctx->restart_interval)
148 value |= JPEG_ENC_CTRL_RESTART_EN_BIT;
149 else
150 value &= ~JPEG_ENC_CTRL_RESTART_EN_BIT;
151 writel(value, base + JPEG_ENC_CTRL);
152
153 writel(ctx->restart_interval, base + JPEG_ENC_RST_MCU_NUM);
154 }
155
