1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Coda multi-standard codec IP - JPEG support functions 4 * 5 * Copyright (C) 2014 Philipp Zabel, Pengutronix 6 */ 7 8#include <asm/unaligned.h> 9#include <linux/irqreturn.h> 10#include <linux/kernel.h> 11#include <linux/ktime.h> 12#include <linux/slab.h> 13#include <linux/swab.h> 14#include <linux/videodev2.h> 15 16#include <media/v4l2-common.h> 17#include <media/v4l2-fh.h> 18#include <media/v4l2-jpeg.h> 19#include <media/v4l2-mem2mem.h> 20#include <media/videobuf2-core.h> 21#include <media/videobuf2-dma-contig.h> 22 23#include "coda.h" 24#include "trace.h" 25 26#define SOI_MARKER 0xffd8 27#define APP9_MARKER 0xffe9 28#define DRI_MARKER 0xffdd 29#define DQT_MARKER 0xffdb 30#define DHT_MARKER 0xffc4 31#define SOF_MARKER 0xffc0 32#define SOS_MARKER 0xffda 33#define EOI_MARKER 0xffd9 34 35enum { 36 CODA9_JPEG_FORMAT_420, 37 CODA9_JPEG_FORMAT_422, 38 CODA9_JPEG_FORMAT_224, 39 CODA9_JPEG_FORMAT_444, 40 CODA9_JPEG_FORMAT_400, 41}; 42 43struct coda_huff_tab { 44 u8 luma_dc[16 + 12]; 45 u8 chroma_dc[16 + 12]; 46 u8 luma_ac[16 + 162]; 47 u8 chroma_ac[16 + 162]; 48 49 /* DC Luma, DC Chroma, AC Luma, AC Chroma */ 50 s16 min[4 * 16]; 51 s16 max[4 * 16]; 52 s8 ptr[4 * 16]; 53}; 54 55#define CODA9_JPEG_ENC_HUFF_DATA_SIZE (256 + 256 + 16 + 16) 56 57/* 58 * Typical Huffman tables for 8-bit precision luminance and 59 * chrominance from JPEG ITU-T.81 (ISO/IEC 10918-1) Annex K.3 60 */ 61 62static const unsigned char luma_dc[16 + 12] = { 63 /* bits */ 64 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 65 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 66 /* values */ 67 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 68 0x08, 0x09, 0x0a, 0x0b, 69}; 70 71static const unsigned char chroma_dc[16 + 12] = { 72 /* bits */ 73 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 74 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 75 /* values */ 76 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 77 0x08, 0x09, 0x0a, 0x0b, 78}; 79 80static const unsigned char luma_ac[16 + 162 + 2] = { 81 /* bits */ 82 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 83 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d, 84 /* values */ 85 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 86 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 87 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 88 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, 89 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, 90 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, 91 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 92 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 93 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 94 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 95 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 96 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 97 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 98 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 99 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 100 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, 101 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 102 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, 103 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 104 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 105 0xf9, 0xfa, /* padded to 32-bit */ 106}; 107 108static const unsigned char chroma_ac[16 + 162 + 2] = { 109 /* bits */ 110 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 111 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 112 /* values */ 113 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 114 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 115 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 116 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 117 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 118 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 119 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 120 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 121 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 122 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 123 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 124 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 125 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 126 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 127 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 128 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 129 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 130 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 131 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 132 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 133 0xf9, 0xfa, /* padded to 32-bit */ 134}; 135 136/* 137 * Quantization tables for luminance and chrominance components in 138 * zig-zag scan order from the Freescale i.MX VPU libraries 139 */ 140 141static unsigned char luma_q[64] = { 142 0x06, 0x04, 0x04, 0x04, 0x05, 0x04, 0x06, 0x05, 143 0x05, 0x06, 0x09, 0x06, 0x05, 0x06, 0x09, 0x0b, 144 0x08, 0x06, 0x06, 0x08, 0x0b, 0x0c, 0x0a, 0x0a, 145 0x0b, 0x0a, 0x0a, 0x0c, 0x10, 0x0c, 0x0c, 0x0c, 146 0x0c, 0x0c, 0x0c, 0x10, 0x0c, 0x0c, 0x0c, 0x0c, 147 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 148 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 149 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 150}; 151 152static unsigned char chroma_q[64] = { 153 0x07, 0x07, 0x07, 0x0d, 0x0c, 0x0d, 0x18, 0x10, 154 0x10, 0x18, 0x14, 0x0e, 0x0e, 0x0e, 0x14, 0x14, 155 0x0e, 0x0e, 0x0e, 0x0e, 0x14, 0x11, 0x0c, 0x0c, 156 0x0c, 0x0c, 0x0c, 0x11, 0x11, 0x0c, 0x0c, 0x0c, 157 0x0c, 0x0c, 0x0c, 0x11, 0x0c, 0x0c, 0x0c, 0x0c, 158 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 159 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 160 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 161}; 162 163static const unsigned char width_align[] = { 164 [CODA9_JPEG_FORMAT_420] = 16, 165 [CODA9_JPEG_FORMAT_422] = 16, 166 [CODA9_JPEG_FORMAT_224] = 8, 167 [CODA9_JPEG_FORMAT_444] = 8, 168 [CODA9_JPEG_FORMAT_400] = 8, 169}; 170 171static const unsigned char height_align[] = { 172 [CODA9_JPEG_FORMAT_420] = 16, 173 [CODA9_JPEG_FORMAT_422] = 8, 174 [CODA9_JPEG_FORMAT_224] = 16, 175 [CODA9_JPEG_FORMAT_444] = 8, 176 [CODA9_JPEG_FORMAT_400] = 8, 177}; 178 179static int coda9_jpeg_chroma_format(u32 pixfmt) 180{ 181 switch (pixfmt) { 182 case V4L2_PIX_FMT_YUV420: 183 case V4L2_PIX_FMT_NV12: 184 return CODA9_JPEG_FORMAT_420; 185 case V4L2_PIX_FMT_YUV422P: 186 return CODA9_JPEG_FORMAT_422; 187 case V4L2_PIX_FMT_YUV444: 188 return CODA9_JPEG_FORMAT_444; 189 case V4L2_PIX_FMT_GREY: 190 return CODA9_JPEG_FORMAT_400; 191 } 192 return -EINVAL; 193} 194 195struct coda_memcpy_desc { 196 int offset; 197 const void *src; 198 size_t len; 199}; 200 201static void coda_memcpy_parabuf(void *parabuf, 202 const struct coda_memcpy_desc *desc) 203{ 204 u32 *dst = parabuf + desc->offset; 205 const u32 *src = desc->src; 206 int len = desc->len / 4; 207 int i; 208 209 for (i = 0; i < len; i += 2) { 210 dst[i + 1] = swab32(src[i]); 211 dst[i] = swab32(src[i + 1]); 212 } 213} 214 215int coda_jpeg_write_tables(struct coda_ctx *ctx) 216{ 217 int i; 218 static const struct coda_memcpy_desc huff[8] = { 219 { 0, luma_dc, sizeof(luma_dc) }, 220 { 32, luma_ac, sizeof(luma_ac) }, 221 { 216, chroma_dc, sizeof(chroma_dc) }, 222 { 248, chroma_ac, sizeof(chroma_ac) }, 223 }; 224 struct coda_memcpy_desc qmat[3] = { 225 { 512, ctx->params.jpeg_qmat_tab[0], 64 }, 226 { 576, ctx->params.jpeg_qmat_tab[1], 64 }, 227 { 640, ctx->params.jpeg_qmat_tab[1], 64 }, 228 }; 229 230 /* Write huffman tables to parameter memory */ 231 for (i = 0; i < ARRAY_SIZE(huff); i++) 232 coda_memcpy_parabuf(ctx->parabuf.vaddr, huff + i); 233 234 /* Write Q-matrix to parameter memory */ 235 for (i = 0; i < ARRAY_SIZE(qmat); i++) 236 coda_memcpy_parabuf(ctx->parabuf.vaddr, qmat + i); 237 238 return 0; 239} 240 241bool coda_jpeg_check_buffer(struct coda_ctx *ctx, struct vb2_buffer *vb) 242{ 243 void *vaddr = vb2_plane_vaddr(vb, 0); 244 u16 soi, eoi; 245 int len, i; 246 247 soi = be16_to_cpup((__be16 *)vaddr); 248 if (soi != SOI_MARKER) 249 return false; 250 251 len = vb2_get_plane_payload(vb, 0); 252 vaddr += len - 2; 253 for (i = 0; i < 32; i++) { 254 eoi = be16_to_cpup((__be16 *)(vaddr - i)); 255 if (eoi == EOI_MARKER) { 256 if (i > 0) 257 vb2_set_plane_payload(vb, 0, len - i); 258 return true; 259 } 260 } 261 262 return false; 263} 264 265static int coda9_jpeg_gen_dec_huff_tab(struct coda_ctx *ctx, int tab_num); 266 267int coda_jpeg_decode_header(struct coda_ctx *ctx, struct vb2_buffer *vb) 268{ 269 struct coda_dev *dev = ctx->dev; 270 u8 *buf = vb2_plane_vaddr(vb, 0); 271 size_t len = vb2_get_plane_payload(vb, 0); 272 struct v4l2_jpeg_scan_header scan_header; 273 struct v4l2_jpeg_reference quantization_tables[4] = { }; 274 struct v4l2_jpeg_reference huffman_tables[4] = { }; 275 struct v4l2_jpeg_header header = { 276 .scan = &scan_header, 277 .quantization_tables = quantization_tables, 278 .huffman_tables = huffman_tables, 279 }; 280 struct coda_q_data *q_data_src; 281 struct coda_huff_tab *huff_tab; 282 int i, j, ret; 283 284 ret = v4l2_jpeg_parse_header(buf, len, &header); 285 if (ret < 0) { 286 v4l2_err(&dev->v4l2_dev, "failed to parse header\n"); 287 return ret; 288 } 289 290 ctx->params.jpeg_restart_interval = header.restart_interval; 291 292 /* check frame header */ 293 if (header.frame.height > ctx->codec->max_h || 294 header.frame.width > ctx->codec->max_w) { 295 v4l2_err(&dev->v4l2_dev, "invalid dimensions: %dx%d\n", 296 header.frame.width, header.frame.height); 297 return -EINVAL; 298 } 299 300 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 301 if (header.frame.height != q_data_src->height || 302 header.frame.width != q_data_src->width) { 303 v4l2_err(&dev->v4l2_dev, 304 "dimensions don't match format: %dx%d\n", 305 header.frame.width, header.frame.height); 306 return -EINVAL; 307 } 308 309 if (header.frame.num_components != 3) { 310 v4l2_err(&dev->v4l2_dev, 311 "unsupported number of components: %d\n", 312 header.frame.num_components); 313 return -EINVAL; 314 } 315 316 /* install quantization tables */ 317 if (quantization_tables[3].start) { 318 v4l2_err(&dev->v4l2_dev, 319 "only 3 quantization tables supported\n"); 320 return -EINVAL; 321 } 322 for (i = 0; i < 3; i++) { 323 if (!quantization_tables[i].start) 324 continue; 325 if (quantization_tables[i].length != 64) { 326 v4l2_err(&dev->v4l2_dev, 327 "only 8-bit quantization tables supported\n"); 328 continue; 329 } 330 if (!ctx->params.jpeg_qmat_tab[i]) { 331 ctx->params.jpeg_qmat_tab[i] = kmalloc(64, GFP_KERNEL); 332 if (!ctx->params.jpeg_qmat_tab[i]) 333 return -ENOMEM; 334 } 335 memcpy(ctx->params.jpeg_qmat_tab[i], 336 quantization_tables[i].start, 64); 337 } 338 339 /* install Huffman tables */ 340 for (i = 0; i < 4; i++) { 341 if (!huffman_tables[i].start) { 342 v4l2_err(&dev->v4l2_dev, "missing Huffman table\n"); 343 return -EINVAL; 344 } 345 /* AC tables should be between 17 -> 178, DC between 17 -> 28 */ 346 if (huffman_tables[i].length < 17 || 347 huffman_tables[i].length > 178 || 348 ((i & 2) == 0 && huffman_tables[i].length > 28)) { 349 v4l2_err(&dev->v4l2_dev, 350 "invalid Huffman table %d length: %zu\n", 351 i, huffman_tables[i].length); 352 return -EINVAL; 353 } 354 } 355 huff_tab = ctx->params.jpeg_huff_tab; 356 if (!huff_tab) { 357 huff_tab = kzalloc(sizeof(struct coda_huff_tab), GFP_KERNEL); 358 if (!huff_tab) 359 return -ENOMEM; 360 ctx->params.jpeg_huff_tab = huff_tab; 361 } 362 363 memset(huff_tab, 0, sizeof(*huff_tab)); 364 memcpy(huff_tab->luma_dc, huffman_tables[0].start, huffman_tables[0].length); 365 memcpy(huff_tab->chroma_dc, huffman_tables[1].start, huffman_tables[1].length); 366 memcpy(huff_tab->luma_ac, huffman_tables[2].start, huffman_tables[2].length); 367 memcpy(huff_tab->chroma_ac, huffman_tables[3].start, huffman_tables[3].length); 368 369 /* check scan header */ 370 for (i = 0; i < scan_header.num_components; i++) { 371 struct v4l2_jpeg_scan_component_spec *scan_component; 372 373 scan_component = &scan_header.component[i]; 374 for (j = 0; j < header.frame.num_components; j++) { 375 if (header.frame.component[j].component_identifier == 376 scan_component->component_selector) 377 break; 378 } 379 if (j == header.frame.num_components) 380 continue; 381 382 ctx->params.jpeg_huff_dc_index[j] = 383 scan_component->dc_entropy_coding_table_selector; 384 ctx->params.jpeg_huff_ac_index[j] = 385 scan_component->ac_entropy_coding_table_selector; 386 } 387 388 /* Generate Huffman table information */ 389 for (i = 0; i < 4; i++) 390 coda9_jpeg_gen_dec_huff_tab(ctx, i); 391 392 /* start of entropy coded segment */ 393 ctx->jpeg_ecs_offset = header.ecs_offset; 394 395 switch (header.frame.subsampling) { 396 case V4L2_JPEG_CHROMA_SUBSAMPLING_420: 397 case V4L2_JPEG_CHROMA_SUBSAMPLING_422: 398 ctx->params.jpeg_chroma_subsampling = header.frame.subsampling; 399 break; 400 default: 401 v4l2_err(&dev->v4l2_dev, "chroma subsampling not supported: %d", 402 header.frame.subsampling); 403 return -EINVAL; 404 } 405 406 return 0; 407} 408 409static inline void coda9_jpeg_write_huff_values(struct coda_dev *dev, u8 *bits, 410 int num_values) 411{ 412 s8 *values = (s8 *)(bits + 16); 413 int huff_length, i; 414 415 for (huff_length = 0, i = 0; i < 16; i++) 416 huff_length += bits[i]; 417 for (i = huff_length; i < num_values; i++) 418 values[i] = -1; 419 for (i = 0; i < num_values; i++) 420 coda_write(dev, (s32)values[i], CODA9_REG_JPEG_HUFF_DATA); 421} 422 423static int coda9_jpeg_dec_huff_setup(struct coda_ctx *ctx) 424{ 425 struct coda_huff_tab *huff_tab = ctx->params.jpeg_huff_tab; 426 struct coda_dev *dev = ctx->dev; 427 s16 *huff_min = huff_tab->min; 428 s16 *huff_max = huff_tab->max; 429 s8 *huff_ptr = huff_tab->ptr; 430 int i; 431 432 /* MIN Tables */ 433 coda_write(dev, 0x003, CODA9_REG_JPEG_HUFF_CTRL); 434 coda_write(dev, 0x000, CODA9_REG_JPEG_HUFF_ADDR); 435 for (i = 0; i < 4 * 16; i++) 436 coda_write(dev, (s32)huff_min[i], CODA9_REG_JPEG_HUFF_DATA); 437 438 /* MAX Tables */ 439 coda_write(dev, 0x403, CODA9_REG_JPEG_HUFF_CTRL); 440 coda_write(dev, 0x440, CODA9_REG_JPEG_HUFF_ADDR); 441 for (i = 0; i < 4 * 16; i++) 442 coda_write(dev, (s32)huff_max[i], CODA9_REG_JPEG_HUFF_DATA); 443 444 /* PTR Tables */ 445 coda_write(dev, 0x803, CODA9_REG_JPEG_HUFF_CTRL); 446 coda_write(dev, 0x880, CODA9_REG_JPEG_HUFF_ADDR); 447 for (i = 0; i < 4 * 16; i++) 448 coda_write(dev, (s32)huff_ptr[i], CODA9_REG_JPEG_HUFF_DATA); 449 450 /* VAL Tables: DC Luma, DC Chroma, AC Luma, AC Chroma */ 451 coda_write(dev, 0xc03, CODA9_REG_JPEG_HUFF_CTRL); 452 coda9_jpeg_write_huff_values(dev, huff_tab->luma_dc, 12); 453 coda9_jpeg_write_huff_values(dev, huff_tab->chroma_dc, 12); 454 coda9_jpeg_write_huff_values(dev, huff_tab->luma_ac, 162); 455 coda9_jpeg_write_huff_values(dev, huff_tab->chroma_ac, 162); 456 coda_write(dev, 0x000, CODA9_REG_JPEG_HUFF_CTRL); 457 return 0; 458} 459 460static inline void coda9_jpeg_write_qmat_tab(struct coda_dev *dev, 461 u8 *qmat, int index) 462{ 463 int i; 464 465 coda_write(dev, index | 0x3, CODA9_REG_JPEG_QMAT_CTRL); 466 for (i = 0; i < 64; i++) 467 coda_write(dev, qmat[i], CODA9_REG_JPEG_QMAT_DATA); 468 coda_write(dev, 0, CODA9_REG_JPEG_QMAT_CTRL); 469} 470 471static void coda9_jpeg_qmat_setup(struct coda_ctx *ctx) 472{ 473 struct coda_dev *dev = ctx->dev; 474 int *qmat_index = ctx->params.jpeg_qmat_index; 475 u8 **qmat_tab = ctx->params.jpeg_qmat_tab; 476 477 coda9_jpeg_write_qmat_tab(dev, qmat_tab[qmat_index[0]], 0x00); 478 coda9_jpeg_write_qmat_tab(dev, qmat_tab[qmat_index[1]], 0x40); 479 coda9_jpeg_write_qmat_tab(dev, qmat_tab[qmat_index[2]], 0x80); 480} 481 482static void coda9_jpeg_dec_bbc_gbu_setup(struct coda_ctx *ctx, 483 struct vb2_buffer *buf, u32 ecs_offset) 484{ 485 struct coda_dev *dev = ctx->dev; 486 int page_ptr, word_ptr, bit_ptr; 487 u32 bbc_base_addr, end_addr; 488 int bbc_cur_pos; 489 int ret, val; 490 491 bbc_base_addr = vb2_dma_contig_plane_dma_addr(buf, 0); 492 end_addr = bbc_base_addr + vb2_get_plane_payload(buf, 0); 493 494 page_ptr = ecs_offset / 256; 495 word_ptr = (ecs_offset % 256) / 4; 496 if (page_ptr & 1) 497 word_ptr += 64; 498 bit_ptr = (ecs_offset % 4) * 8; 499 if (word_ptr & 1) 500 bit_ptr += 32; 501 word_ptr &= ~0x1; 502 503 coda_write(dev, end_addr, CODA9_REG_JPEG_BBC_WR_PTR); 504 coda_write(dev, bbc_base_addr, CODA9_REG_JPEG_BBC_BAS_ADDR); 505 506 /* Leave 3 256-byte page margin to avoid a BBC interrupt */ 507 coda_write(dev, end_addr + 256 * 3 + 256, CODA9_REG_JPEG_BBC_END_ADDR); 508 val = DIV_ROUND_UP(vb2_plane_size(buf, 0), 256) + 3; 509 coda_write(dev, BIT(31) | val, CODA9_REG_JPEG_BBC_STRM_CTRL); 510 511 bbc_cur_pos = page_ptr; 512 coda_write(dev, bbc_cur_pos, CODA9_REG_JPEG_BBC_CUR_POS); 513 coda_write(dev, bbc_base_addr + (bbc_cur_pos << 8), 514 CODA9_REG_JPEG_BBC_EXT_ADDR); 515 coda_write(dev, (bbc_cur_pos & 1) << 6, CODA9_REG_JPEG_BBC_INT_ADDR); 516 coda_write(dev, 64, CODA9_REG_JPEG_BBC_DATA_CNT); 517 coda_write(dev, 0, CODA9_REG_JPEG_BBC_COMMAND); 518 do { 519 ret = coda_read(dev, CODA9_REG_JPEG_BBC_BUSY); 520 } while (ret == 1); 521 522 bbc_cur_pos++; 523 coda_write(dev, bbc_cur_pos, CODA9_REG_JPEG_BBC_CUR_POS); 524 coda_write(dev, bbc_base_addr + (bbc_cur_pos << 8), 525 CODA9_REG_JPEG_BBC_EXT_ADDR); 526 coda_write(dev, (bbc_cur_pos & 1) << 6, CODA9_REG_JPEG_BBC_INT_ADDR); 527 coda_write(dev, 64, CODA9_REG_JPEG_BBC_DATA_CNT); 528 coda_write(dev, 0, CODA9_REG_JPEG_BBC_COMMAND); 529 do { 530 ret = coda_read(dev, CODA9_REG_JPEG_BBC_BUSY); 531 } while (ret == 1); 532 533 bbc_cur_pos++; 534 coda_write(dev, bbc_cur_pos, CODA9_REG_JPEG_BBC_CUR_POS); 535 coda_write(dev, 1, CODA9_REG_JPEG_BBC_CTRL); 536 537 coda_write(dev, 0, CODA9_REG_JPEG_GBU_TT_CNT); 538 coda_write(dev, word_ptr, CODA9_REG_JPEG_GBU_WD_PTR); 539 coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBSR); 540 coda_write(dev, 127, CODA9_REG_JPEG_GBU_BBER); 541 if (page_ptr & 1) { 542 coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBIR); 543 coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBHR); 544 } else { 545 coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBIR); 546 coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBHR); 547 } 548 coda_write(dev, 4, CODA9_REG_JPEG_GBU_CTRL); 549 coda_write(dev, bit_ptr, CODA9_REG_JPEG_GBU_FF_RPTR); 550 coda_write(dev, 3, CODA9_REG_JPEG_GBU_CTRL); 551} 552 553static const int bus_req_num[] = { 554 [CODA9_JPEG_FORMAT_420] = 2, 555 [CODA9_JPEG_FORMAT_422] = 3, 556 [CODA9_JPEG_FORMAT_224] = 3, 557 [CODA9_JPEG_FORMAT_444] = 4, 558 [CODA9_JPEG_FORMAT_400] = 4, 559}; 560 561#define MCU_INFO(mcu_block_num, comp_num, comp0_info, comp1_info, comp2_info) \ 562 (((mcu_block_num) << CODA9_JPEG_MCU_BLOCK_NUM_OFFSET) | \ 563 ((comp_num) << CODA9_JPEG_COMP_NUM_OFFSET) | \ 564 ((comp0_info) << CODA9_JPEG_COMP0_INFO_OFFSET) | \ 565 ((comp1_info) << CODA9_JPEG_COMP1_INFO_OFFSET) | \ 566 ((comp2_info) << CODA9_JPEG_COMP2_INFO_OFFSET)) 567 568static const u32 mcu_info[] = { 569 [CODA9_JPEG_FORMAT_420] = MCU_INFO(6, 3, 10, 5, 5), 570 [CODA9_JPEG_FORMAT_422] = MCU_INFO(4, 3, 9, 5, 5), 571 [CODA9_JPEG_FORMAT_224] = MCU_INFO(4, 3, 6, 5, 5), 572 [CODA9_JPEG_FORMAT_444] = MCU_INFO(3, 3, 5, 5, 5), 573 [CODA9_JPEG_FORMAT_400] = MCU_INFO(1, 1, 5, 0, 0), 574}; 575 576/* 577 * Convert Huffman table specifcations to tables of codes and code lengths. 578 * For reference, see JPEG ITU-T.81 (ISO/IEC 10918-1) [1] 579 * 580 * [1] https://www.w3.org/Graphics/JPEG/itu-t81.pdf 581 */ 582static int coda9_jpeg_gen_enc_huff_tab(struct coda_ctx *ctx, int tab_num, 583 int *ehufsi, int *ehufco) 584{ 585 int i, j, k, lastk, si, code, maxsymbol; 586 const u8 *bits, *huffval; 587 struct { 588 int size[256]; 589 int code[256]; 590 } *huff; 591 static const unsigned char *huff_tabs[4] = { 592 luma_dc, luma_ac, chroma_dc, chroma_ac, 593 }; 594 int ret = -EINVAL; 595 596 huff = kzalloc(sizeof(*huff), GFP_KERNEL); 597 if (!huff) 598 return -ENOMEM; 599 600 bits = huff_tabs[tab_num]; 601 huffval = huff_tabs[tab_num] + 16; 602 603 maxsymbol = tab_num & 1 ? 256 : 16; 604 605 /* Figure C.1 - Generation of table of Huffman code sizes */ 606 k = 0; 607 for (i = 1; i <= 16; i++) { 608 j = bits[i - 1]; 609 if (k + j > maxsymbol) 610 goto out; 611 while (j--) 612 huff->size[k++] = i; 613 } 614 lastk = k; 615 616 /* Figure C.2 - Generation of table of Huffman codes */ 617 k = 0; 618 code = 0; 619 si = huff->size[0]; 620 while (k < lastk) { 621 while (huff->size[k] == si) { 622 huff->code[k++] = code; 623 code++; 624 } 625 if (code >= (1 << si)) 626 goto out; 627 code <<= 1; 628 si++; 629 } 630 631 /* Figure C.3 - Ordering procedure for encoding procedure code tables */ 632 for (k = 0; k < lastk; k++) { 633 i = huffval[k]; 634 if (i >= maxsymbol || ehufsi[i]) 635 goto out; 636 ehufco[i] = huff->code[k]; 637 ehufsi[i] = huff->size[k]; 638 } 639 640 ret = 0; 641out: 642 kfree(huff); 643 return ret; 644} 645 646#define DC_TABLE_INDEX0 0 647#define AC_TABLE_INDEX0 1 648#define DC_TABLE_INDEX1 2 649#define AC_TABLE_INDEX1 3 650 651static u8 *coda9_jpeg_get_huff_bits(struct coda_ctx *ctx, int tab_num) 652{ 653 struct coda_huff_tab *huff_tab = ctx->params.jpeg_huff_tab; 654 655 if (!huff_tab) 656 return NULL; 657 658 switch (tab_num) { 659 case DC_TABLE_INDEX0: return huff_tab->luma_dc; 660 case AC_TABLE_INDEX0: return huff_tab->luma_ac; 661 case DC_TABLE_INDEX1: return huff_tab->chroma_dc; 662 case AC_TABLE_INDEX1: return huff_tab->chroma_ac; 663 } 664 665 return NULL; 666} 667 668static int coda9_jpeg_gen_dec_huff_tab(struct coda_ctx *ctx, int tab_num) 669{ 670 int ptr_cnt = 0, huff_code = 0, zero_flag = 0, data_flag = 0; 671 u8 *huff_bits; 672 s16 *huff_max; 673 s16 *huff_min; 674 s8 *huff_ptr; 675 int ofs; 676 int i; 677 678 huff_bits = coda9_jpeg_get_huff_bits(ctx, tab_num); 679 if (!huff_bits) 680 return -EINVAL; 681 682 /* DC/AC Luma, DC/AC Chroma -> DC Luma/Chroma, AC Luma/Chroma */ 683 ofs = ((tab_num & 1) << 1) | ((tab_num >> 1) & 1); 684 ofs *= 16; 685 686 huff_ptr = ctx->params.jpeg_huff_tab->ptr + ofs; 687 huff_max = ctx->params.jpeg_huff_tab->max + ofs; 688 huff_min = ctx->params.jpeg_huff_tab->min + ofs; 689 690 for (i = 0; i < 16; i++) { 691 if (huff_bits[i]) { 692 huff_ptr[i] = ptr_cnt; 693 ptr_cnt += huff_bits[i]; 694 huff_min[i] = huff_code; 695 huff_max[i] = huff_code + (huff_bits[i] - 1); 696 data_flag = 1; 697 zero_flag = 0; 698 } else { 699 huff_ptr[i] = -1; 700 huff_min[i] = -1; 701 huff_max[i] = -1; 702 zero_flag = 1; 703 } 704 705 if (data_flag == 1) { 706 if (zero_flag == 1) 707 huff_code <<= 1; 708 else 709 huff_code = (huff_max[i] + 1) << 1; 710 } 711 } 712 713 return 0; 714} 715 716static int coda9_jpeg_load_huff_tab(struct coda_ctx *ctx) 717{ 718 struct { 719 int size[4][256]; 720 int code[4][256]; 721 } *huff; 722 u32 *huff_data; 723 int i, j; 724 int ret; 725 726 huff = kzalloc(sizeof(*huff), GFP_KERNEL); 727 if (!huff) 728 return -ENOMEM; 729 730 /* Generate all four (luma/chroma DC/AC) code/size lookup tables */ 731 for (i = 0; i < 4; i++) { 732 ret = coda9_jpeg_gen_enc_huff_tab(ctx, i, huff->size[i], 733 huff->code[i]); 734 if (ret) 735 goto out; 736 } 737 738 if (!ctx->params.jpeg_huff_data) { 739 ctx->params.jpeg_huff_data = 740 kzalloc(sizeof(u32) * CODA9_JPEG_ENC_HUFF_DATA_SIZE, 741 GFP_KERNEL); 742 if (!ctx->params.jpeg_huff_data) { 743 ret = -ENOMEM; 744 goto out; 745 } 746 } 747 huff_data = ctx->params.jpeg_huff_data; 748 749 for (j = 0; j < 4; j++) { 750 /* Store Huffman lookup tables in AC0, AC1, DC0, DC1 order */ 751 int t = (j == 0) ? AC_TABLE_INDEX0 : 752 (j == 1) ? AC_TABLE_INDEX1 : 753 (j == 2) ? DC_TABLE_INDEX0 : 754 DC_TABLE_INDEX1; 755 /* DC tables only have 16 entries */ 756 int len = (j < 2) ? 256 : 16; 757 758 for (i = 0; i < len; i++) { 759 if (huff->size[t][i] == 0 && huff->code[t][i] == 0) 760 *(huff_data++) = 0; 761 else 762 *(huff_data++) = 763 ((huff->size[t][i] - 1) << 16) | 764 huff->code[t][i]; 765 } 766 } 767 768 ret = 0; 769out: 770 kfree(huff); 771 return ret; 772} 773 774static void coda9_jpeg_write_huff_tab(struct coda_ctx *ctx) 775{ 776 struct coda_dev *dev = ctx->dev; 777 u32 *huff_data = ctx->params.jpeg_huff_data; 778 int i; 779 780 /* Write Huffman size/code lookup tables in AC0, AC1, DC0, DC1 order */ 781 coda_write(dev, 0x3, CODA9_REG_JPEG_HUFF_CTRL); 782 for (i = 0; i < CODA9_JPEG_ENC_HUFF_DATA_SIZE; i++) 783 coda_write(dev, *(huff_data++), CODA9_REG_JPEG_HUFF_DATA); 784 coda_write(dev, 0x0, CODA9_REG_JPEG_HUFF_CTRL); 785} 786 787static inline void coda9_jpeg_write_qmat_quotients(struct coda_dev *dev, 788 u8 *qmat, int index) 789{ 790 int i; 791 792 coda_write(dev, index | 0x3, CODA9_REG_JPEG_QMAT_CTRL); 793 for (i = 0; i < 64; i++) 794 coda_write(dev, 0x80000 / qmat[i], CODA9_REG_JPEG_QMAT_DATA); 795 coda_write(dev, index, CODA9_REG_JPEG_QMAT_CTRL); 796} 797 798static void coda9_jpeg_load_qmat_tab(struct coda_ctx *ctx) 799{ 800 struct coda_dev *dev = ctx->dev; 801 u8 *luma_tab; 802 u8 *chroma_tab; 803 804 luma_tab = ctx->params.jpeg_qmat_tab[0]; 805 if (!luma_tab) 806 luma_tab = luma_q; 807 808 chroma_tab = ctx->params.jpeg_qmat_tab[1]; 809 if (!chroma_tab) 810 chroma_tab = chroma_q; 811 812 coda9_jpeg_write_qmat_quotients(dev, luma_tab, 0x00); 813 coda9_jpeg_write_qmat_quotients(dev, chroma_tab, 0x40); 814 coda9_jpeg_write_qmat_quotients(dev, chroma_tab, 0x80); 815} 816 817struct coda_jpeg_stream { 818 u8 *curr; 819 u8 *end; 820}; 821 822static inline int coda_jpeg_put_byte(u8 byte, struct coda_jpeg_stream *stream) 823{ 824 if (stream->curr >= stream->end) 825 return -EINVAL; 826 827 *stream->curr++ = byte; 828 829 return 0; 830} 831 832static inline int coda_jpeg_put_word(u16 word, struct coda_jpeg_stream *stream) 833{ 834 if (stream->curr + sizeof(__be16) > stream->end) 835 return -EINVAL; 836 837 put_unaligned_be16(word, stream->curr); 838 stream->curr += sizeof(__be16); 839 840 return 0; 841} 842 843static int coda_jpeg_put_table(u16 marker, u8 index, const u8 *table, 844 size_t len, struct coda_jpeg_stream *stream) 845{ 846 int i, ret; 847 848 ret = coda_jpeg_put_word(marker, stream); 849 if (ret < 0) 850 return ret; 851 ret = coda_jpeg_put_word(3 + len, stream); 852 if (ret < 0) 853 return ret; 854 ret = coda_jpeg_put_byte(index, stream); 855 for (i = 0; i < len && ret == 0; i++) 856 ret = coda_jpeg_put_byte(table[i], stream); 857 858 return ret; 859} 860 861static int coda_jpeg_define_quantization_table(struct coda_ctx *ctx, u8 index, 862 struct coda_jpeg_stream *stream) 863{ 864 return coda_jpeg_put_table(DQT_MARKER, index, 865 ctx->params.jpeg_qmat_tab[index], 64, 866 stream); 867} 868 869static int coda_jpeg_define_huffman_table(u8 index, const u8 *table, size_t len, 870 struct coda_jpeg_stream *stream) 871{ 872 return coda_jpeg_put_table(DHT_MARKER, index, table, len, stream); 873} 874 875static int coda9_jpeg_encode_header(struct coda_ctx *ctx, int len, u8 *buf) 876{ 877 struct coda_jpeg_stream stream = { buf, buf + len }; 878 struct coda_q_data *q_data_src; 879 int chroma_format, comp_num; 880 int i, ret, pad; 881 882 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 883 chroma_format = coda9_jpeg_chroma_format(q_data_src->fourcc); 884 if (chroma_format < 0) 885 return 0; 886 887 /* Start Of Image */ 888 ret = coda_jpeg_put_word(SOI_MARKER, &stream); 889 if (ret < 0) 890 return ret; 891 892 /* Define Restart Interval */ 893 if (ctx->params.jpeg_restart_interval) { 894 ret = coda_jpeg_put_word(DRI_MARKER, &stream); 895 if (ret < 0) 896 return ret; 897 ret = coda_jpeg_put_word(4, &stream); 898 if (ret < 0) 899 return ret; 900 ret = coda_jpeg_put_word(ctx->params.jpeg_restart_interval, 901 &stream); 902 if (ret < 0) 903 return ret; 904 } 905 906 /* Define Quantization Tables */ 907 ret = coda_jpeg_define_quantization_table(ctx, 0x00, &stream); 908 if (ret < 0) 909 return ret; 910 if (chroma_format != CODA9_JPEG_FORMAT_400) { 911 ret = coda_jpeg_define_quantization_table(ctx, 0x01, &stream); 912 if (ret < 0) 913 return ret; 914 } 915 916 /* Define Huffman Tables */ 917 ret = coda_jpeg_define_huffman_table(0x00, luma_dc, 16 + 12, &stream); 918 if (ret < 0) 919 return ret; 920 ret = coda_jpeg_define_huffman_table(0x10, luma_ac, 16 + 162, &stream); 921 if (ret < 0) 922 return ret; 923 if (chroma_format != CODA9_JPEG_FORMAT_400) { 924 ret = coda_jpeg_define_huffman_table(0x01, chroma_dc, 16 + 12, 925 &stream); 926 if (ret < 0) 927 return ret; 928 ret = coda_jpeg_define_huffman_table(0x11, chroma_ac, 16 + 162, 929 &stream); 930 if (ret < 0) 931 return ret; 932 } 933 934 /* Start Of Frame */ 935 ret = coda_jpeg_put_word(SOF_MARKER, &stream); 936 if (ret < 0) 937 return ret; 938 comp_num = (chroma_format == CODA9_JPEG_FORMAT_400) ? 1 : 3; 939 ret = coda_jpeg_put_word(8 + comp_num * 3, &stream); 940 if (ret < 0) 941 return ret; 942 ret = coda_jpeg_put_byte(0x08, &stream); 943 if (ret < 0) 944 return ret; 945 ret = coda_jpeg_put_word(q_data_src->height, &stream); 946 if (ret < 0) 947 return ret; 948 ret = coda_jpeg_put_word(q_data_src->width, &stream); 949 if (ret < 0) 950 return ret; 951 ret = coda_jpeg_put_byte(comp_num, &stream); 952 if (ret < 0) 953 return ret; 954 for (i = 0; i < comp_num; i++) { 955 static unsigned char subsampling[5][3] = { 956 [CODA9_JPEG_FORMAT_420] = { 0x22, 0x11, 0x11 }, 957 [CODA9_JPEG_FORMAT_422] = { 0x21, 0x11, 0x11 }, 958 [CODA9_JPEG_FORMAT_224] = { 0x12, 0x11, 0x11 }, 959 [CODA9_JPEG_FORMAT_444] = { 0x11, 0x11, 0x11 }, 960 [CODA9_JPEG_FORMAT_400] = { 0x11 }, 961 }; 962 963 /* Component identifier, matches SOS */ 964 ret = coda_jpeg_put_byte(i + 1, &stream); 965 if (ret < 0) 966 return ret; 967 ret = coda_jpeg_put_byte(subsampling[chroma_format][i], 968 &stream); 969 if (ret < 0) 970 return ret; 971 /* Chroma table index */ 972 ret = coda_jpeg_put_byte((i == 0) ? 0 : 1, &stream); 973 if (ret < 0) 974 return ret; 975 } 976 977 /* Pad to multiple of 8 bytes */ 978 pad = (stream.curr - buf) % 8; 979 if (pad) { 980 pad = 8 - pad; 981 while (pad--) { 982 ret = coda_jpeg_put_byte(0x00, &stream); 983 if (ret < 0) 984 return ret; 985 } 986 } 987 988 return stream.curr - buf; 989} 990 991/* 992 * Scale quantization table using nonlinear scaling factor 993 * u8 qtab[64], scale [50,190] 994 */ 995static void coda_scale_quant_table(u8 *q_tab, int scale) 996{ 997 unsigned int temp; 998 int i; 999 1000 for (i = 0; i < 64; i++) { 1001 temp = DIV_ROUND_CLOSEST((unsigned int)q_tab[i] * scale, 100); 1002 if (temp <= 0) 1003 temp = 1; 1004 if (temp > 255) 1005 temp = 255; 1006 q_tab[i] = (unsigned char)temp; 1007 } 1008} 1009 1010void coda_set_jpeg_compression_quality(struct coda_ctx *ctx, int quality) 1011{ 1012 unsigned int scale; 1013 1014 ctx->params.jpeg_quality = quality; 1015 1016 /* Clip quality setting to [5,100] interval */ 1017 if (quality > 100) 1018 quality = 100; 1019 if (quality < 5) 1020 quality = 5; 1021 1022 /* 1023 * Non-linear scaling factor: 1024 * [5,50] -> [1000..100], [51,100] -> [98..0] 1025 */ 1026 if (quality < 50) 1027 scale = 5000 / quality; 1028 else 1029 scale = 200 - 2 * quality; 1030 1031 if (ctx->params.jpeg_qmat_tab[0]) { 1032 memcpy(ctx->params.jpeg_qmat_tab[0], luma_q, 64); 1033 coda_scale_quant_table(ctx->params.jpeg_qmat_tab[0], scale); 1034 } 1035 if (ctx->params.jpeg_qmat_tab[1]) { 1036 memcpy(ctx->params.jpeg_qmat_tab[1], chroma_q, 64); 1037 coda_scale_quant_table(ctx->params.jpeg_qmat_tab[1], scale); 1038 } 1039} 1040 1041/* 1042 * Encoder context operations 1043 */ 1044 1045static int coda9_jpeg_start_encoding(struct coda_ctx *ctx) 1046{ 1047 struct coda_dev *dev = ctx->dev; 1048 int ret; 1049 1050 ret = coda9_jpeg_load_huff_tab(ctx); 1051 if (ret < 0) { 1052 v4l2_err(&dev->v4l2_dev, "error loading Huffman tables\n"); 1053 return ret; 1054 } 1055 if (!ctx->params.jpeg_qmat_tab[0]) { 1056 ctx->params.jpeg_qmat_tab[0] = kmalloc(64, GFP_KERNEL); 1057 if (!ctx->params.jpeg_qmat_tab[0]) 1058 return -ENOMEM; 1059 } 1060 if (!ctx->params.jpeg_qmat_tab[1]) { 1061 ctx->params.jpeg_qmat_tab[1] = kmalloc(64, GFP_KERNEL); 1062 if (!ctx->params.jpeg_qmat_tab[1]) 1063 return -ENOMEM; 1064 } 1065 coda_set_jpeg_compression_quality(ctx, ctx->params.jpeg_quality); 1066 1067 return 0; 1068} 1069 1070static int coda9_jpeg_prepare_encode(struct coda_ctx *ctx) 1071{ 1072 struct coda_q_data *q_data_src; 1073 struct vb2_v4l2_buffer *src_buf, *dst_buf; 1074 struct coda_dev *dev = ctx->dev; 1075 u32 start_addr, end_addr; 1076 u16 aligned_width, aligned_height; 1077 bool chroma_interleave; 1078 int chroma_format; 1079 int header_len; 1080 int ret; 1081 ktime_t timeout; 1082 1083 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 1084 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); 1085 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 1086 1087 if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == 0) 1088 vb2_set_plane_payload(&src_buf->vb2_buf, 0, 1089 vb2_plane_size(&src_buf->vb2_buf, 0)); 1090 1091 src_buf->sequence = ctx->osequence; 1092 dst_buf->sequence = ctx->osequence; 1093 ctx->osequence++; 1094 1095 src_buf->flags |= V4L2_BUF_FLAG_KEYFRAME; 1096 src_buf->flags &= ~V4L2_BUF_FLAG_PFRAME; 1097 1098 coda_set_gdi_regs(ctx); 1099 1100 start_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0); 1101 end_addr = start_addr + vb2_plane_size(&dst_buf->vb2_buf, 0); 1102 1103 chroma_format = coda9_jpeg_chroma_format(q_data_src->fourcc); 1104 if (chroma_format < 0) 1105 return chroma_format; 1106 1107 /* Round image dimensions to multiple of MCU size */ 1108 aligned_width = round_up(q_data_src->width, width_align[chroma_format]); 1109 aligned_height = round_up(q_data_src->height, 1110 height_align[chroma_format]); 1111 if (aligned_width != q_data_src->bytesperline) { 1112 v4l2_err(&dev->v4l2_dev, "wrong stride: %d instead of %d\n", 1113 aligned_width, q_data_src->bytesperline); 1114 } 1115 1116 header_len = 1117 coda9_jpeg_encode_header(ctx, 1118 vb2_plane_size(&dst_buf->vb2_buf, 0), 1119 vb2_plane_vaddr(&dst_buf->vb2_buf, 0)); 1120 if (header_len < 0) 1121 return header_len; 1122 1123 coda_write(dev, start_addr + header_len, CODA9_REG_JPEG_BBC_BAS_ADDR); 1124 coda_write(dev, end_addr, CODA9_REG_JPEG_BBC_END_ADDR); 1125 coda_write(dev, start_addr + header_len, CODA9_REG_JPEG_BBC_WR_PTR); 1126 coda_write(dev, start_addr + header_len, CODA9_REG_JPEG_BBC_RD_PTR); 1127 coda_write(dev, 0, CODA9_REG_JPEG_BBC_CUR_POS); 1128 /* 64 words per 256-byte page */ 1129 coda_write(dev, 64, CODA9_REG_JPEG_BBC_DATA_CNT); 1130 coda_write(dev, start_addr, CODA9_REG_JPEG_BBC_EXT_ADDR); 1131 coda_write(dev, 0, CODA9_REG_JPEG_BBC_INT_ADDR); 1132 1133 coda_write(dev, 0, CODA9_REG_JPEG_GBU_BT_PTR); 1134 coda_write(dev, 0, CODA9_REG_JPEG_GBU_WD_PTR); 1135 coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBSR); 1136 coda_write(dev, BIT(31) | ((end_addr - start_addr - header_len) / 256), 1137 CODA9_REG_JPEG_BBC_STRM_CTRL); 1138 coda_write(dev, 0, CODA9_REG_JPEG_GBU_CTRL); 1139 coda_write(dev, 0, CODA9_REG_JPEG_GBU_FF_RPTR); 1140 coda_write(dev, 127, CODA9_REG_JPEG_GBU_BBER); 1141 coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBIR); 1142 coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBHR); 1143 1144 chroma_interleave = (q_data_src->fourcc == V4L2_PIX_FMT_NV12); 1145 coda_write(dev, CODA9_JPEG_PIC_CTRL_TC_DIRECTION | 1146 CODA9_JPEG_PIC_CTRL_ENCODER_EN, CODA9_REG_JPEG_PIC_CTRL); 1147 coda_write(dev, 0, CODA9_REG_JPEG_SCL_INFO); 1148 coda_write(dev, chroma_interleave, CODA9_REG_JPEG_DPB_CONFIG); 1149 coda_write(dev, ctx->params.jpeg_restart_interval, 1150 CODA9_REG_JPEG_RST_INTVAL); 1151 coda_write(dev, 1, CODA9_REG_JPEG_BBC_CTRL); 1152 1153 coda_write(dev, bus_req_num[chroma_format], CODA9_REG_JPEG_OP_INFO); 1154 1155 coda9_jpeg_write_huff_tab(ctx); 1156 coda9_jpeg_load_qmat_tab(ctx); 1157 1158 if (ctx->params.rot_mode & CODA_ROT_90) { 1159 aligned_width = aligned_height; 1160 aligned_height = q_data_src->bytesperline; 1161 if (chroma_format == CODA9_JPEG_FORMAT_422) 1162 chroma_format = CODA9_JPEG_FORMAT_224; 1163 else if (chroma_format == CODA9_JPEG_FORMAT_224) 1164 chroma_format = CODA9_JPEG_FORMAT_422; 1165 } 1166 /* These need to be multiples of MCU size */ 1167 coda_write(dev, aligned_width << 16 | aligned_height, 1168 CODA9_REG_JPEG_PIC_SIZE); 1169 coda_write(dev, ctx->params.rot_mode ? 1170 (CODA_ROT_MIR_ENABLE | ctx->params.rot_mode) : 0, 1171 CODA9_REG_JPEG_ROT_INFO); 1172 1173 coda_write(dev, mcu_info[chroma_format], CODA9_REG_JPEG_MCU_INFO); 1174 1175 coda_write(dev, 1, CODA9_GDI_CONTROL); 1176 timeout = ktime_add_us(ktime_get(), 100000); 1177 do { 1178 ret = coda_read(dev, CODA9_GDI_STATUS); 1179 if (ktime_compare(ktime_get(), timeout) > 0) { 1180 v4l2_err(&dev->v4l2_dev, "timeout waiting for GDI\n"); 1181 return -ETIMEDOUT; 1182 } 1183 } while (!ret); 1184 1185 coda_write(dev, (chroma_format << 17) | (chroma_interleave << 16) | 1186 q_data_src->bytesperline, CODA9_GDI_INFO_CONTROL); 1187 /* The content of this register seems to be irrelevant: */ 1188 coda_write(dev, aligned_width << 16 | aligned_height, 1189 CODA9_GDI_INFO_PIC_SIZE); 1190 1191 coda_write_base(ctx, q_data_src, src_buf, CODA9_GDI_INFO_BASE_Y); 1192 1193 coda_write(dev, 0, CODA9_REG_JPEG_DPB_BASE00); 1194 coda_write(dev, 0, CODA9_GDI_CONTROL); 1195 coda_write(dev, 1, CODA9_GDI_PIC_INIT_HOST); 1196 1197 coda_write(dev, 1, CODA9_GDI_WPROT_ERR_CLR); 1198 coda_write(dev, 0, CODA9_GDI_WPROT_RGN_EN); 1199 1200 trace_coda_jpeg_run(ctx, src_buf); 1201 1202 coda_write(dev, 1, CODA9_REG_JPEG_PIC_START); 1203 1204 return 0; 1205} 1206 1207static void coda9_jpeg_finish_encode(struct coda_ctx *ctx) 1208{ 1209 struct vb2_v4l2_buffer *src_buf, *dst_buf; 1210 struct coda_dev *dev = ctx->dev; 1211 u32 wr_ptr, start_ptr; 1212 u32 err_mb; 1213 1214 if (ctx->aborting) { 1215 coda_write(ctx->dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD); 1216 return; 1217 } 1218 1219 /* 1220 * Lock to make sure that an encoder stop command running in parallel 1221 * will either already have marked src_buf as last, or it will wake up 1222 * the capture queue after the buffers are returned. 1223 */ 1224 mutex_lock(&ctx->wakeup_mutex); 1225 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 1226 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 1227 1228 trace_coda_jpeg_done(ctx, dst_buf); 1229 1230 /* 1231 * Set plane payload to the number of bytes written out 1232 * by the JPEG processing unit 1233 */ 1234 start_ptr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0); 1235 wr_ptr = coda_read(dev, CODA9_REG_JPEG_BBC_WR_PTR); 1236 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, wr_ptr - start_ptr); 1237 1238 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB); 1239 if (err_mb) 1240 coda_dbg(1, ctx, "ERRMB: 0x%x\n", err_mb); 1241 1242 coda_write(dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD); 1243 1244 dst_buf->flags &= ~(V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_LAST); 1245 dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME; 1246 dst_buf->flags |= src_buf->flags & V4L2_BUF_FLAG_LAST; 1247 1248 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false); 1249 1250 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); 1251 coda_m2m_buf_done(ctx, dst_buf, err_mb ? VB2_BUF_STATE_ERROR : 1252 VB2_BUF_STATE_DONE); 1253 mutex_unlock(&ctx->wakeup_mutex); 1254 1255 coda_dbg(1, ctx, "job finished: encoded frame (%u)%s\n", 1256 dst_buf->sequence, 1257 (dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : ""); 1258 1259 /* 1260 * Reset JPEG processing unit after each encode run to work 1261 * around hangups when switching context between encoder and 1262 * decoder. 1263 */ 1264 coda_hw_reset(ctx); 1265} 1266 1267static void coda9_jpeg_encode_timeout(struct coda_ctx *ctx) 1268{ 1269 struct coda_dev *dev = ctx->dev; 1270 u32 end_addr, wr_ptr; 1271 1272 /* Handle missing BBC overflow interrupt via timeout */ 1273 end_addr = coda_read(dev, CODA9_REG_JPEG_BBC_END_ADDR); 1274 wr_ptr = coda_read(dev, CODA9_REG_JPEG_BBC_WR_PTR); 1275 if (wr_ptr >= end_addr - 256) { 1276 v4l2_err(&dev->v4l2_dev, "JPEG too large for capture buffer\n"); 1277 coda9_jpeg_finish_encode(ctx); 1278 return; 1279 } 1280 1281 coda_hw_reset(ctx); 1282} 1283 1284static void coda9_jpeg_release(struct coda_ctx *ctx) 1285{ 1286 int i; 1287 1288 if (ctx->params.jpeg_qmat_tab[0] == luma_q) 1289 ctx->params.jpeg_qmat_tab[0] = NULL; 1290 if (ctx->params.jpeg_qmat_tab[1] == chroma_q) 1291 ctx->params.jpeg_qmat_tab[1] = NULL; 1292 for (i = 0; i < 3; i++) 1293 kfree(ctx->params.jpeg_qmat_tab[i]); 1294 kfree(ctx->params.jpeg_huff_data); 1295 kfree(ctx->params.jpeg_huff_tab); 1296} 1297 1298const struct coda_context_ops coda9_jpeg_encode_ops = { 1299 .queue_init = coda_encoder_queue_init, 1300 .start_streaming = coda9_jpeg_start_encoding, 1301 .prepare_run = coda9_jpeg_prepare_encode, 1302 .finish_run = coda9_jpeg_finish_encode, 1303 .run_timeout = coda9_jpeg_encode_timeout, 1304 .release = coda9_jpeg_release, 1305}; 1306 1307/* 1308 * Decoder context operations 1309 */ 1310 1311static int coda9_jpeg_start_decoding(struct coda_ctx *ctx) 1312{ 1313 ctx->params.jpeg_qmat_index[0] = 0; 1314 ctx->params.jpeg_qmat_index[1] = 1; 1315 ctx->params.jpeg_qmat_index[2] = 1; 1316 ctx->params.jpeg_qmat_tab[0] = luma_q; 1317 ctx->params.jpeg_qmat_tab[1] = chroma_q; 1318 /* nothing more to do here */ 1319 1320 /* TODO: we could already scan the first header to get the chroma 1321 * format. 1322 */ 1323 1324 return 0; 1325} 1326 1327static int coda9_jpeg_prepare_decode(struct coda_ctx *ctx) 1328{ 1329 struct coda_dev *dev = ctx->dev; 1330 int aligned_width, aligned_height; 1331 int chroma_format; 1332 int ret; 1333 u32 val, dst_fourcc; 1334 struct coda_q_data *q_data_src, *q_data_dst; 1335 struct vb2_v4l2_buffer *src_buf, *dst_buf; 1336 int chroma_interleave; 1337 1338 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 1339 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); 1340 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 1341 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 1342 dst_fourcc = q_data_dst->fourcc; 1343 1344 if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == 0) 1345 vb2_set_plane_payload(&src_buf->vb2_buf, 0, 1346 vb2_plane_size(&src_buf->vb2_buf, 0)); 1347 1348 chroma_format = coda9_jpeg_chroma_format(q_data_dst->fourcc); 1349 if (chroma_format < 0) { 1350 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx); 1351 return chroma_format; 1352 } 1353 1354 ret = coda_jpeg_decode_header(ctx, &src_buf->vb2_buf); 1355 if (ret < 0) { 1356 v4l2_err(&dev->v4l2_dev, "failed to decode JPEG header: %d\n", 1357 ret); 1358 1359 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 1360 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 1361 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); 1362 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE); 1363 1364 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx); 1365 return ret; 1366 } 1367 1368 /* Round image dimensions to multiple of MCU size */ 1369 aligned_width = round_up(q_data_src->width, width_align[chroma_format]); 1370 aligned_height = round_up(q_data_src->height, height_align[chroma_format]); 1371 if (aligned_width != q_data_dst->bytesperline) { 1372 v4l2_err(&dev->v4l2_dev, "stride mismatch: %d != %d\n", 1373 aligned_width, q_data_dst->bytesperline); 1374 } 1375 1376 coda_set_gdi_regs(ctx); 1377 1378 val = ctx->params.jpeg_huff_ac_index[0] << 12 | 1379 ctx->params.jpeg_huff_ac_index[1] << 11 | 1380 ctx->params.jpeg_huff_ac_index[2] << 10 | 1381 ctx->params.jpeg_huff_dc_index[0] << 9 | 1382 ctx->params.jpeg_huff_dc_index[1] << 8 | 1383 ctx->params.jpeg_huff_dc_index[2] << 7; 1384 if (ctx->params.jpeg_huff_tab) 1385 val |= CODA9_JPEG_PIC_CTRL_USER_HUFFMAN_EN; 1386 coda_write(dev, val, CODA9_REG_JPEG_PIC_CTRL); 1387 1388 coda_write(dev, aligned_width << 16 | aligned_height, 1389 CODA9_REG_JPEG_PIC_SIZE); 1390 1391 chroma_interleave = (dst_fourcc == V4L2_PIX_FMT_NV12); 1392 coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO); 1393 coda_write(dev, bus_req_num[chroma_format], CODA9_REG_JPEG_OP_INFO); 1394 coda_write(dev, mcu_info[chroma_format], CODA9_REG_JPEG_MCU_INFO); 1395 coda_write(dev, 0, CODA9_REG_JPEG_SCL_INFO); 1396 coda_write(dev, chroma_interleave, CODA9_REG_JPEG_DPB_CONFIG); 1397 coda_write(dev, ctx->params.jpeg_restart_interval, 1398 CODA9_REG_JPEG_RST_INTVAL); 1399 1400 if (ctx->params.jpeg_huff_tab) { 1401 ret = coda9_jpeg_dec_huff_setup(ctx); 1402 if (ret < 0) { 1403 v4l2_err(&dev->v4l2_dev, 1404 "failed to set up Huffman tables: %d\n", ret); 1405 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx); 1406 return ret; 1407 } 1408 } 1409 1410 coda9_jpeg_qmat_setup(ctx); 1411 1412 coda9_jpeg_dec_bbc_gbu_setup(ctx, &src_buf->vb2_buf, 1413 ctx->jpeg_ecs_offset); 1414 1415 coda_write(dev, 0, CODA9_REG_JPEG_RST_INDEX); 1416 coda_write(dev, 0, CODA9_REG_JPEG_RST_COUNT); 1417 1418 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_Y); 1419 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CB); 1420 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CR); 1421 1422 coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO); 1423 1424 coda_write(dev, 1, CODA9_GDI_CONTROL); 1425 do { 1426 ret = coda_read(dev, CODA9_GDI_STATUS); 1427 } while (!ret); 1428 1429 val = (chroma_format << 17) | (chroma_interleave << 16) | 1430 q_data_dst->bytesperline; 1431 if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP) 1432 val |= 3 << 20; 1433 coda_write(dev, val, CODA9_GDI_INFO_CONTROL); 1434 1435 coda_write(dev, aligned_width << 16 | aligned_height, 1436 CODA9_GDI_INFO_PIC_SIZE); 1437 1438 coda_write_base(ctx, q_data_dst, dst_buf, CODA9_GDI_INFO_BASE_Y); 1439 1440 coda_write(dev, 0, CODA9_REG_JPEG_DPB_BASE00); 1441 coda_write(dev, 0, CODA9_GDI_CONTROL); 1442 coda_write(dev, 1, CODA9_GDI_PIC_INIT_HOST); 1443 1444 trace_coda_jpeg_run(ctx, src_buf); 1445 1446 coda_write(dev, 1, CODA9_REG_JPEG_PIC_START); 1447 1448 return 0; 1449} 1450 1451static void coda9_jpeg_finish_decode(struct coda_ctx *ctx) 1452{ 1453 struct coda_dev *dev = ctx->dev; 1454 struct vb2_v4l2_buffer *dst_buf, *src_buf; 1455 struct coda_q_data *q_data_dst; 1456 u32 err_mb; 1457 1458 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB); 1459 if (err_mb) 1460 v4l2_err(&dev->v4l2_dev, "ERRMB: 0x%x\n", err_mb); 1461 1462 coda_write(dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD); 1463 1464 /* 1465 * Lock to make sure that a decoder stop command running in parallel 1466 * will either already have marked src_buf as last, or it will wake up 1467 * the capture queue after the buffers are returned. 1468 */ 1469 mutex_lock(&ctx->wakeup_mutex); 1470 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 1471 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 1472 dst_buf->sequence = ctx->osequence++; 1473 1474 trace_coda_jpeg_done(ctx, dst_buf); 1475 1476 dst_buf->flags &= ~(V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_LAST); 1477 dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME; 1478 dst_buf->flags |= src_buf->flags & V4L2_BUF_FLAG_LAST; 1479 1480 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false); 1481 1482 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 1483 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, q_data_dst->sizeimage); 1484 1485 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); 1486 coda_m2m_buf_done(ctx, dst_buf, err_mb ? VB2_BUF_STATE_ERROR : 1487 VB2_BUF_STATE_DONE); 1488 1489 mutex_unlock(&ctx->wakeup_mutex); 1490 1491 coda_dbg(1, ctx, "job finished: decoded frame (%u)%s\n", 1492 dst_buf->sequence, 1493 (dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : ""); 1494 1495 /* 1496 * Reset JPEG processing unit after each decode run to work 1497 * around hangups when switching context between encoder and 1498 * decoder. 1499 */ 1500 coda_hw_reset(ctx); 1501} 1502 1503const struct coda_context_ops coda9_jpeg_decode_ops = { 1504 .queue_init = coda_encoder_queue_init, /* non-bitstream operation */ 1505 .start_streaming = coda9_jpeg_start_decoding, 1506 .prepare_run = coda9_jpeg_prepare_decode, 1507 .finish_run = coda9_jpeg_finish_decode, 1508 .release = coda9_jpeg_release, 1509}; 1510 1511irqreturn_t coda9_jpeg_irq_handler(int irq, void *data) 1512{ 1513 struct coda_dev *dev = data; 1514 struct coda_ctx *ctx; 1515 int status; 1516 int err_mb; 1517 1518 status = coda_read(dev, CODA9_REG_JPEG_PIC_STATUS); 1519 if (status == 0) 1520 return IRQ_HANDLED; 1521 coda_write(dev, status, CODA9_REG_JPEG_PIC_STATUS); 1522 1523 if (status & CODA9_JPEG_STATUS_OVERFLOW) 1524 v4l2_err(&dev->v4l2_dev, "JPEG overflow\n"); 1525 1526 if (status & CODA9_JPEG_STATUS_BBC_INT) 1527 v4l2_err(&dev->v4l2_dev, "JPEG BBC interrupt\n"); 1528 1529 if (status & CODA9_JPEG_STATUS_ERROR) { 1530 v4l2_err(&dev->v4l2_dev, "JPEG error\n"); 1531 1532 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB); 1533 if (err_mb) { 1534 v4l2_err(&dev->v4l2_dev, 1535 "ERRMB: 0x%x: rst idx %d, mcu pos (%d,%d)\n", 1536 err_mb, err_mb >> 24, (err_mb >> 12) & 0xfff, 1537 err_mb & 0xfff); 1538 } 1539 } 1540 1541 ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev); 1542 if (!ctx) { 1543 v4l2_err(&dev->v4l2_dev, 1544 "Instance released before the end of transaction\n"); 1545 mutex_unlock(&dev->coda_mutex); 1546 return IRQ_HANDLED; 1547 } 1548 1549 complete(&ctx->completion); 1550 1551 return IRQ_HANDLED; 1552} 1553