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WIP FPC-III support
[linux/fpc-iii.git] / drivers / media / platform / coda / coda-jpeg.c
blobb11cfbe166dd3141568c10a16d02406385fa8f80
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
35 enum {
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
43 struct 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
62 static 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
71 static 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
80 static 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
108 static 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
141 static 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
152 static 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
163 static 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
171 static 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
179 static 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
195 struct coda_memcpy_desc {
196 int offset;
197 const void *src;
198 size_t len;
199 };
200
201 static 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
215 int 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
241 bool 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
265 static int coda9_jpeg_gen_dec_huff_tab(struct coda_ctx *ctx, int tab_num);
266
267 int 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
409 static 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
423 static 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
460 static 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
471 static 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
482 static 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
553 static 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
568 static 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 */
582 static 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;
641 out:
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
651 static 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
668 static 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
716 static 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;
769 out:
770 kfree(huff);
771 return ret;
772 }
773
774 static 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
787 static 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
798 static 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
817 struct coda_jpeg_stream {
818 u8 *curr;
819 u8 *end;
820 };
821
822 static 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
832 static 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
843 static 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
861 static 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
869 static 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
875 static 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 */
995 static 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
1010 void 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
1045 static 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[1])
1058 ctx->params.jpeg_qmat_tab[1] = kmalloc(64, GFP_KERNEL);
1059 coda_set_jpeg_compression_quality(ctx, ctx->params.jpeg_quality);
1060
1061 return 0;
1062 }
1063
1064 static int coda9_jpeg_prepare_encode(struct coda_ctx *ctx)
1065 {
1066 struct coda_q_data *q_data_src;
1067 struct vb2_v4l2_buffer *src_buf, *dst_buf;
1068 struct coda_dev *dev = ctx->dev;
1069 u32 start_addr, end_addr;
1070 u16 aligned_width, aligned_height;
1071 bool chroma_interleave;
1072 int chroma_format;
1073 int header_len;
1074 int ret;
1075 ktime_t timeout;
1076
1077 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
1078 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
1079 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1080
1081 if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == 0)
1082 vb2_set_plane_payload(&src_buf->vb2_buf, 0,
1083 vb2_plane_size(&src_buf->vb2_buf, 0));
1084
1085 src_buf->sequence = ctx->osequence;
1086 dst_buf->sequence = ctx->osequence;
1087 ctx->osequence++;
1088
1089 src_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
1090 src_buf->flags &= ~V4L2_BUF_FLAG_PFRAME;
1091
1092 coda_set_gdi_regs(ctx);
1093
1094 start_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
1095 end_addr = start_addr + vb2_plane_size(&dst_buf->vb2_buf, 0);
1096
1097 chroma_format = coda9_jpeg_chroma_format(q_data_src->fourcc);
1098 if (chroma_format < 0)
1099 return chroma_format;
1100
1101 /* Round image dimensions to multiple of MCU size */
1102 aligned_width = round_up(q_data_src->width, width_align[chroma_format]);
1103 aligned_height = round_up(q_data_src->height,
1104 height_align[chroma_format]);
1105 if (aligned_width != q_data_src->bytesperline) {
1106 v4l2_err(&dev->v4l2_dev, "wrong stride: %d instead of %d\n",
1107 aligned_width, q_data_src->bytesperline);
1108 }
1109
1110 header_len =
1111 coda9_jpeg_encode_header(ctx,
1112 vb2_plane_size(&dst_buf->vb2_buf, 0),
1113 vb2_plane_vaddr(&dst_buf->vb2_buf, 0));
1114 if (header_len < 0)
1115 return header_len;
1116
1117 coda_write(dev, start_addr + header_len, CODA9_REG_JPEG_BBC_BAS_ADDR);
1118 coda_write(dev, end_addr, CODA9_REG_JPEG_BBC_END_ADDR);
1119 coda_write(dev, start_addr + header_len, CODA9_REG_JPEG_BBC_WR_PTR);
1120 coda_write(dev, start_addr + header_len, CODA9_REG_JPEG_BBC_RD_PTR);
1121 coda_write(dev, 0, CODA9_REG_JPEG_BBC_CUR_POS);
1122 /* 64 words per 256-byte page */
1123 coda_write(dev, 64, CODA9_REG_JPEG_BBC_DATA_CNT);
1124 coda_write(dev, start_addr, CODA9_REG_JPEG_BBC_EXT_ADDR);
1125 coda_write(dev, 0, CODA9_REG_JPEG_BBC_INT_ADDR);
1126
1127 coda_write(dev, 0, CODA9_REG_JPEG_GBU_BT_PTR);
1128 coda_write(dev, 0, CODA9_REG_JPEG_GBU_WD_PTR);
1129 coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBSR);
1130 coda_write(dev, 0, CODA9_REG_JPEG_BBC_STRM_CTRL);
1131 coda_write(dev, 0, CODA9_REG_JPEG_GBU_CTRL);
1132 coda_write(dev, 0, CODA9_REG_JPEG_GBU_FF_RPTR);
1133 coda_write(dev, 127, CODA9_REG_JPEG_GBU_BBER);
1134 coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBIR);
1135 coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBHR);
1136
1137 chroma_interleave = (q_data_src->fourcc == V4L2_PIX_FMT_NV12);
1138 coda_write(dev, CODA9_JPEG_PIC_CTRL_TC_DIRECTION |
1139 CODA9_JPEG_PIC_CTRL_ENCODER_EN, CODA9_REG_JPEG_PIC_CTRL);
1140 coda_write(dev, 0, CODA9_REG_JPEG_SCL_INFO);
1141 coda_write(dev, chroma_interleave, CODA9_REG_JPEG_DPB_CONFIG);
1142 coda_write(dev, ctx->params.jpeg_restart_interval,
1143 CODA9_REG_JPEG_RST_INTVAL);
1144 coda_write(dev, 1, CODA9_REG_JPEG_BBC_CTRL);
1145
1146 coda_write(dev, bus_req_num[chroma_format], CODA9_REG_JPEG_OP_INFO);
1147
1148 coda9_jpeg_write_huff_tab(ctx);
1149 coda9_jpeg_load_qmat_tab(ctx);
1150
1151 if (ctx->params.rot_mode & CODA_ROT_90) {
1152 aligned_width = aligned_height;
1153 aligned_height = q_data_src->bytesperline;
1154 if (chroma_format == CODA9_JPEG_FORMAT_422)
1155 chroma_format = CODA9_JPEG_FORMAT_224;
1156 else if (chroma_format == CODA9_JPEG_FORMAT_224)
1157 chroma_format = CODA9_JPEG_FORMAT_422;
1158 }
1159 /* These need to be multiples of MCU size */
1160 coda_write(dev, aligned_width << 16 | aligned_height,
1161 CODA9_REG_JPEG_PIC_SIZE);
1162 coda_write(dev, ctx->params.rot_mode ?
1163 (CODA_ROT_MIR_ENABLE | ctx->params.rot_mode) : 0,
1164 CODA9_REG_JPEG_ROT_INFO);
1165
1166 coda_write(dev, mcu_info[chroma_format], CODA9_REG_JPEG_MCU_INFO);
1167
1168 coda_write(dev, 1, CODA9_GDI_CONTROL);
1169 timeout = ktime_add_us(ktime_get(), 100000);
1170 do {
1171 ret = coda_read(dev, CODA9_GDI_STATUS);
1172 if (ktime_compare(ktime_get(), timeout) > 0) {
1173 v4l2_err(&dev->v4l2_dev, "timeout waiting for GDI\n");
1174 return -ETIMEDOUT;
1175 }
1176 } while (!ret);
1177
1178 coda_write(dev, (chroma_format << 17) | (chroma_interleave << 16) |
1179 q_data_src->bytesperline, CODA9_GDI_INFO_CONTROL);
1180 /* The content of this register seems to be irrelevant: */
1181 coda_write(dev, aligned_width << 16 | aligned_height,
1182 CODA9_GDI_INFO_PIC_SIZE);
1183
1184 coda_write_base(ctx, q_data_src, src_buf, CODA9_GDI_INFO_BASE_Y);
1185
1186 coda_write(dev, 0, CODA9_REG_JPEG_DPB_BASE00);
1187 coda_write(dev, 0, CODA9_GDI_CONTROL);
1188 coda_write(dev, 1, CODA9_GDI_PIC_INIT_HOST);
1189
1190 coda_write(dev, 1, CODA9_GDI_WPROT_ERR_CLR);
1191 coda_write(dev, 0, CODA9_GDI_WPROT_RGN_EN);
1192
1193 trace_coda_jpeg_run(ctx, src_buf);
1194
1195 coda_write(dev, 1, CODA9_REG_JPEG_PIC_START);
1196
1197 return 0;
1198 }
1199
1200 static void coda9_jpeg_finish_encode(struct coda_ctx *ctx)
1201 {
1202 struct vb2_v4l2_buffer *src_buf, *dst_buf;
1203 struct coda_dev *dev = ctx->dev;
1204 u32 wr_ptr, start_ptr;
1205 u32 err_mb;
1206
1207 if (ctx->aborting) {
1208 coda_write(ctx->dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD);
1209 return;
1210 }
1211
1212 /*
1213 * Lock to make sure that an encoder stop command running in parallel
1214 * will either already have marked src_buf as last, or it will wake up
1215 * the capture queue after the buffers are returned.
1216 */
1217 mutex_lock(&ctx->wakeup_mutex);
1218 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1219 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1220
1221 trace_coda_jpeg_done(ctx, dst_buf);
1222
1223 /*
1224 * Set plane payload to the number of bytes written out
1225 * by the JPEG processing unit
1226 */
1227 start_ptr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
1228 wr_ptr = coda_read(dev, CODA9_REG_JPEG_BBC_WR_PTR);
1229 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, wr_ptr - start_ptr);
1230
1231 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB);
1232 if (err_mb)
1233 coda_dbg(1, ctx, "ERRMB: 0x%x\n", err_mb);
1234
1235 coda_write(dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD);
1236
1237 dst_buf->flags &= ~(V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_LAST);
1238 dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
1239 dst_buf->flags |= src_buf->flags & V4L2_BUF_FLAG_LAST;
1240
1241 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
1242
1243 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1244 coda_m2m_buf_done(ctx, dst_buf, err_mb ? VB2_BUF_STATE_ERROR :
1245 VB2_BUF_STATE_DONE);
1246 mutex_unlock(&ctx->wakeup_mutex);
1247
1248 coda_dbg(1, ctx, "job finished: encoded frame (%u)%s\n",
1249 dst_buf->sequence,
1250 (dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : "");
1251
1252 /*
1253 * Reset JPEG processing unit after each encode run to work
1254 * around hangups when switching context between encoder and
1255 * decoder.
1256 */
1257 coda_hw_reset(ctx);
1258 }
1259
1260 static void coda9_jpeg_release(struct coda_ctx *ctx)
1261 {
1262 int i;
1263
1264 if (ctx->params.jpeg_qmat_tab[0] == luma_q)
1265 ctx->params.jpeg_qmat_tab[0] = NULL;
1266 if (ctx->params.jpeg_qmat_tab[1] == chroma_q)
1267 ctx->params.jpeg_qmat_tab[1] = NULL;
1268 for (i = 0; i < 3; i++)
1269 kfree(ctx->params.jpeg_qmat_tab[i]);
1270 kfree(ctx->params.jpeg_huff_data);
1271 kfree(ctx->params.jpeg_huff_tab);
1272 }
1273
1274 const struct coda_context_ops coda9_jpeg_encode_ops = {
1275 .queue_init = coda_encoder_queue_init,
1276 .start_streaming = coda9_jpeg_start_encoding,
1277 .prepare_run = coda9_jpeg_prepare_encode,
1278 .finish_run = coda9_jpeg_finish_encode,
1279 .release = coda9_jpeg_release,
1280 };
1281
1282 /*
1283 * Decoder context operations
1284 */
1285
1286 static int coda9_jpeg_start_decoding(struct coda_ctx *ctx)
1287 {
1288 ctx->params.jpeg_qmat_index[0] = 0;
1289 ctx->params.jpeg_qmat_index[1] = 1;
1290 ctx->params.jpeg_qmat_index[2] = 1;
1291 ctx->params.jpeg_qmat_tab[0] = luma_q;
1292 ctx->params.jpeg_qmat_tab[1] = chroma_q;
1293 /* nothing more to do here */
1294
1295 /* TODO: we could already scan the first header to get the chroma
1296 * format.
1297 */
1298
1299 return 0;
1300 }
1301
1302 static int coda9_jpeg_prepare_decode(struct coda_ctx *ctx)
1303 {
1304 struct coda_dev *dev = ctx->dev;
1305 int aligned_width, aligned_height;
1306 int chroma_format;
1307 int ret;
1308 u32 val, dst_fourcc;
1309 struct coda_q_data *q_data_src, *q_data_dst;
1310 struct vb2_v4l2_buffer *src_buf, *dst_buf;
1311 int chroma_interleave;
1312
1313 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
1314 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
1315 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1316 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1317 dst_fourcc = q_data_dst->fourcc;
1318
1319 if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == 0)
1320 vb2_set_plane_payload(&src_buf->vb2_buf, 0,
1321 vb2_plane_size(&src_buf->vb2_buf, 0));
1322
1323 chroma_format = coda9_jpeg_chroma_format(q_data_dst->fourcc);
1324 if (chroma_format < 0) {
1325 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1326 return chroma_format;
1327 }
1328
1329 ret = coda_jpeg_decode_header(ctx, &src_buf->vb2_buf);
1330 if (ret < 0) {
1331 v4l2_err(&dev->v4l2_dev, "failed to decode JPEG header: %d\n",
1332 ret);
1333
1334 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1335 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1336 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1337 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
1338
1339 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1340 return ret;
1341 }
1342
1343 /* Round image dimensions to multiple of MCU size */
1344 aligned_width = round_up(q_data_src->width, width_align[chroma_format]);
1345 aligned_height = round_up(q_data_src->height, height_align[chroma_format]);
1346 if (aligned_width != q_data_dst->bytesperline) {
1347 v4l2_err(&dev->v4l2_dev, "stride mismatch: %d != %d\n",
1348 aligned_width, q_data_dst->bytesperline);
1349 }
1350
1351 coda_set_gdi_regs(ctx);
1352
1353 val = ctx->params.jpeg_huff_ac_index[0] << 12 |
1354 ctx->params.jpeg_huff_ac_index[1] << 11 |
1355 ctx->params.jpeg_huff_ac_index[2] << 10 |
1356 ctx->params.jpeg_huff_dc_index[0] << 9 |
1357 ctx->params.jpeg_huff_dc_index[1] << 8 |
1358 ctx->params.jpeg_huff_dc_index[2] << 7;
1359 if (ctx->params.jpeg_huff_tab)
1360 val |= CODA9_JPEG_PIC_CTRL_USER_HUFFMAN_EN;
1361 coda_write(dev, val, CODA9_REG_JPEG_PIC_CTRL);
1362
1363 coda_write(dev, aligned_width << 16 | aligned_height,
1364 CODA9_REG_JPEG_PIC_SIZE);
1365
1366 chroma_interleave = (dst_fourcc == V4L2_PIX_FMT_NV12);
1367 coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO);
1368 coda_write(dev, bus_req_num[chroma_format], CODA9_REG_JPEG_OP_INFO);
1369 coda_write(dev, mcu_info[chroma_format], CODA9_REG_JPEG_MCU_INFO);
1370 coda_write(dev, 0, CODA9_REG_JPEG_SCL_INFO);
1371 coda_write(dev, chroma_interleave, CODA9_REG_JPEG_DPB_CONFIG);
1372 coda_write(dev, ctx->params.jpeg_restart_interval,
1373 CODA9_REG_JPEG_RST_INTVAL);
1374
1375 if (ctx->params.jpeg_huff_tab) {
1376 ret = coda9_jpeg_dec_huff_setup(ctx);
1377 if (ret < 0) {
1378 v4l2_err(&dev->v4l2_dev,
1379 "failed to set up Huffman tables: %d\n", ret);
1380 v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1381 return ret;
1382 }
1383 }
1384
1385 coda9_jpeg_qmat_setup(ctx);
1386
1387 coda9_jpeg_dec_bbc_gbu_setup(ctx, &src_buf->vb2_buf,
1388 ctx->jpeg_ecs_offset);
1389
1390 coda_write(dev, 0, CODA9_REG_JPEG_RST_INDEX);
1391 coda_write(dev, 0, CODA9_REG_JPEG_RST_COUNT);
1392
1393 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_Y);
1394 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CB);
1395 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CR);
1396
1397 coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO);
1398
1399 coda_write(dev, 1, CODA9_GDI_CONTROL);
1400 do {
1401 ret = coda_read(dev, CODA9_GDI_STATUS);
1402 } while (!ret);
1403
1404 val = (chroma_format << 17) | (chroma_interleave << 16) |
1405 q_data_dst->bytesperline;
1406 if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP)
1407 val |= 3 << 20;
1408 coda_write(dev, val, CODA9_GDI_INFO_CONTROL);
1409
1410 coda_write(dev, aligned_width << 16 | aligned_height,
1411 CODA9_GDI_INFO_PIC_SIZE);
1412
1413 coda_write_base(ctx, q_data_dst, dst_buf, CODA9_GDI_INFO_BASE_Y);
1414
1415 coda_write(dev, 0, CODA9_REG_JPEG_DPB_BASE00);
1416 coda_write(dev, 0, CODA9_GDI_CONTROL);
1417 coda_write(dev, 1, CODA9_GDI_PIC_INIT_HOST);
1418
1419 trace_coda_jpeg_run(ctx, src_buf);
1420
1421 coda_write(dev, 1, CODA9_REG_JPEG_PIC_START);
1422
1423 return 0;
1424 }
1425
1426 static void coda9_jpeg_finish_decode(struct coda_ctx *ctx)
1427 {
1428 struct coda_dev *dev = ctx->dev;
1429 struct vb2_v4l2_buffer *dst_buf, *src_buf;
1430 struct coda_q_data *q_data_dst;
1431 u32 err_mb;
1432
1433 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB);
1434 if (err_mb)
1435 v4l2_err(&dev->v4l2_dev, "ERRMB: 0x%x\n", err_mb);
1436
1437 coda_write(dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD);
1438
1439 /*
1440 * Lock to make sure that a decoder stop command running in parallel
1441 * will either already have marked src_buf as last, or it will wake up
1442 * the capture queue after the buffers are returned.
1443 */
1444 mutex_lock(&ctx->wakeup_mutex);
1445 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1446 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1447 dst_buf->sequence = ctx->osequence++;
1448
1449 trace_coda_jpeg_done(ctx, dst_buf);
1450
1451 dst_buf->flags &= ~(V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_LAST);
1452 dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
1453 dst_buf->flags |= src_buf->flags & V4L2_BUF_FLAG_LAST;
1454
1455 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
1456
1457 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1458 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, q_data_dst->sizeimage);
1459
1460 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1461 coda_m2m_buf_done(ctx, dst_buf, err_mb ? VB2_BUF_STATE_ERROR :
1462 VB2_BUF_STATE_DONE);
1463
1464 mutex_unlock(&ctx->wakeup_mutex);
1465
1466 coda_dbg(1, ctx, "job finished: decoded frame (%u)%s\n",
1467 dst_buf->sequence,
1468 (dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : "");
1469
1470 /*
1471 * Reset JPEG processing unit after each decode run to work
1472 * around hangups when switching context between encoder and
1473 * decoder.
1474 */
1475 coda_hw_reset(ctx);
1476 }
1477
1478 const struct coda_context_ops coda9_jpeg_decode_ops = {
1479 .queue_init = coda_encoder_queue_init, /* non-bitstream operation */
1480 .start_streaming = coda9_jpeg_start_decoding,
1481 .prepare_run = coda9_jpeg_prepare_decode,
1482 .finish_run = coda9_jpeg_finish_decode,
1483 .release = coda9_jpeg_release,
1484 };
1485
1486 irqreturn_t coda9_jpeg_irq_handler(int irq, void *data)
1487 {
1488 struct coda_dev *dev = data;
1489 struct coda_ctx *ctx;
1490 int status;
1491 int err_mb;
1492
1493 status = coda_read(dev, CODA9_REG_JPEG_PIC_STATUS);
1494 if (status == 0)
1495 return IRQ_HANDLED;
1496 coda_write(dev, status, CODA9_REG_JPEG_PIC_STATUS);
1497
1498 if (status & CODA9_JPEG_STATUS_OVERFLOW)
1499 v4l2_err(&dev->v4l2_dev, "JPEG overflow\n");
1500
1501 if (status & CODA9_JPEG_STATUS_BBC_INT)
1502 v4l2_err(&dev->v4l2_dev, "JPEG BBC interrupt\n");
1503
1504 if (status & CODA9_JPEG_STATUS_ERROR) {
1505 v4l2_err(&dev->v4l2_dev, "JPEG error\n");
1506
1507 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB);
1508 if (err_mb) {
1509 v4l2_err(&dev->v4l2_dev,
1510 "ERRMB: 0x%x: rst idx %d, mcu pos (%d,%d)\n",
1511 err_mb, err_mb >> 24, (err_mb >> 12) & 0xfff,
1512 err_mb & 0xfff);
1513 }
1514 }
1515
1516 ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
1517 if (!ctx) {
1518 v4l2_err(&dev->v4l2_dev,
1519 "Instance released before the end of transaction\n");
1520 mutex_unlock(&dev->coda_mutex);
1521 return IRQ_HANDLED;
1522 }
1523
1524 complete(&ctx->completion);
1525
1526 return IRQ_HANDLED;
1527 }
Linux with added FPC-III support