1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * i.MX8QXP/i.MX8QM JPEG encoder/decoder v4l2 driver 4 * 5 * Copyright 2018-2019 NXP 6 */ 7 8 #include <media/v4l2-ctrls.h> 9 #include <media/v4l2-device.h> 10 #include <media/v4l2-fh.h> 11 12 #ifndef _MXC_JPEG_CORE_H 13 #define _MXC_JPEG_CORE_H 14 15 #define MXC_JPEG_NAME "mxc-jpeg" 16 #define MXC_JPEG_FMT_TYPE_ENC 0 17 #define MXC_JPEG_FMT_TYPE_RAW 1 18 #define MXC_JPEG_DEFAULT_WIDTH 1280 19 #define MXC_JPEG_DEFAULT_HEIGHT 720 20 #define MXC_JPEG_DEFAULT_PFMT V4L2_PIX_FMT_BGR24 21 #define MXC_JPEG_MIN_WIDTH 64 22 #define MXC_JPEG_MIN_HEIGHT 64 23 #define MXC_JPEG_MAX_WIDTH 0x2000 24 #define MXC_JPEG_MAX_HEIGHT 0x2000 25 #define MXC_JPEG_MAX_CFG_STREAM 0x1000 26 #define MXC_JPEG_H_ALIGN 3 27 #define MXC_JPEG_W_ALIGN 3 28 #define MXC_JPEG_MAX_SIZEIMAGE 0xFFFFFC00 29 #define MXC_JPEG_MAX_PLANES 2 30 31 enum mxc_jpeg_enc_state { 32 MXC_JPEG_ENCODING = 0, /* jpeg encode phase */ 33 MXC_JPEG_ENC_CONF = 1, /* jpeg encoder config phase */ 34 }; 35 36 enum mxc_jpeg_mode { 37 MXC_JPEG_DECODE = 0, /* jpeg decode mode */ 38 MXC_JPEG_ENCODE = 1, /* jpeg encode mode */ 39 }; 40 41 /** 42 * struct mxc_jpeg_fmt - driver's internal color format data 43 * @name: format description 44 * @fourcc: fourcc code, 0 if not applicable 45 * @subsampling: subsampling of jpeg components 46 * @nc: number of color components 47 * @depth: number of bits per pixel 48 * @colplanes: number of color planes (1 for packed formats) 49 * @h_align: horizontal alignment order (align to 2^h_align) 50 * @v_align: vertical alignment order (align to 2^v_align) 51 * @flags: flags describing format applicability 52 * @precision: jpeg sample precision 53 */ 54 struct mxc_jpeg_fmt { 55 const char *name; 56 u32 fourcc; 57 enum v4l2_jpeg_chroma_subsampling subsampling; 58 int nc; 59 int depth; 60 int colplanes; 61 int h_align; 62 int v_align; 63 u32 flags; 64 u8 precision; 65 }; 66 67 struct mxc_jpeg_desc { 68 u32 next_descpt_ptr; 69 u32 buf_base0; 70 u32 buf_base1; 71 u32 line_pitch; 72 u32 stm_bufbase; 73 u32 stm_bufsize; 74 u32 imgsize; 75 u32 stm_ctrl; 76 } __packed; 77 78 struct mxc_jpeg_q_data { 79 const struct mxc_jpeg_fmt *fmt; 80 u32 sizeimage[MXC_JPEG_MAX_PLANES]; 81 u32 bytesperline[MXC_JPEG_MAX_PLANES]; 82 int w; 83 int w_adjusted; 84 int h; 85 int h_adjusted; 86 unsigned int sequence; 87 }; 88 89 struct mxc_jpeg_ctx { 90 struct mxc_jpeg_dev *mxc_jpeg; 91 struct mxc_jpeg_q_data out_q; 92 struct mxc_jpeg_q_data cap_q; 93 struct v4l2_fh fh; 94 enum mxc_jpeg_enc_state enc_state; 95 unsigned int slot; 96 unsigned int source_change; 97 bool header_parsed; 98 struct v4l2_ctrl_handler ctrl_handler; 99 u8 jpeg_quality; 100 }; 101 102 struct mxc_jpeg_slot_data { 103 bool used; 104 struct mxc_jpeg_desc *desc; // enc/dec descriptor 105 struct mxc_jpeg_desc *cfg_desc; // configuration descriptor 106 void *cfg_stream_vaddr; // configuration bitstream virtual address 107 unsigned int cfg_stream_size; 108 dma_addr_t desc_handle; 109 dma_addr_t cfg_desc_handle; // configuration descriptor dma address 110 dma_addr_t cfg_stream_handle; // configuration bitstream dma address 111 }; 112 113 struct mxc_jpeg_dev { 114 spinlock_t hw_lock; /* hardware access lock */ 115 unsigned int mode; 116 struct mutex lock; /* v4l2 ioctls serialization */ 117 struct clk *clk_ipg; 118 struct clk *clk_per; 119 struct platform_device *pdev; 120 struct device *dev; 121 void __iomem *base_reg; 122 struct v4l2_device v4l2_dev; 123 struct v4l2_m2m_dev *m2m_dev; 124 struct video_device *dec_vdev; 125 struct mxc_jpeg_slot_data slot_data[MXC_MAX_SLOTS]; 126 int num_domains; 127 struct device **pd_dev; 128 struct device_link **pd_link; 129 }; 130 131 /** 132 * struct mxc_jpeg_sof_comp - JPEG Start Of Frame component fields 133 * @id: component id 134 * @v: vertical sampling 135 * @h: horizontal sampling 136 * @quantization_table_no: id of quantization table 137 */ 138 struct mxc_jpeg_sof_comp { 139 u8 id; 140 u8 v :4; 141 u8 h :4; 142 u8 quantization_table_no; 143 } __packed; 144 145 #define MXC_JPEG_MAX_COMPONENTS 4 146 /** 147 * struct mxc_jpeg_sof - JPEG Start Of Frame marker fields 148 * @length: Start of Frame length 149 * @precision: precision (bits per pixel per color component) 150 * @height: image height 151 * @width: image width 152 * @components_no: number of color components 153 * @comp: component fields for each color component 154 */ 155 struct mxc_jpeg_sof { 156 u16 length; 157 u8 precision; 158 u16 height, width; 159 u8 components_no; 160 struct mxc_jpeg_sof_comp comp[MXC_JPEG_MAX_COMPONENTS]; 161 } __packed; 162 163 /** 164 * struct mxc_jpeg_sos_comp - JPEG Start Of Scan component fields 165 * @id: component id 166 * @huffman_table_no: id of the Huffman table 167 */ 168 struct mxc_jpeg_sos_comp { 169 u8 id; /*component id*/ 170 u8 huffman_table_no; 171 } __packed; 172 173 /** 174 * struct mxc_jpeg_sos - JPEG Start Of Scan marker fields 175 * @length: Start of Frame length 176 * @components_no: number of color components 177 * @comp: SOS component fields for each color component 178 * @ignorable_bytes: ignorable bytes 179 */ 180 struct mxc_jpeg_sos { 181 u16 length; 182 u8 components_no; 183 struct mxc_jpeg_sos_comp comp[MXC_JPEG_MAX_COMPONENTS]; 184 u8 ignorable_bytes[3]; 185 } __packed; 186 187 #endif 188