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 <linux/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
coda9_jpeg_chroma_format(u32 pixfmt)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
coda_memcpy_parabuf(void * parabuf,const struct coda_memcpy_desc * desc)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
coda_jpeg_write_tables(struct coda_ctx * ctx)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
coda_jpeg_check_buffer(struct coda_ctx * ctx,struct vb2_buffer * vb)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
coda_jpeg_decode_header(struct coda_ctx * ctx,struct vb2_buffer * vb)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 JPEG header: %pe\n",
287 ERR_PTR(ret));
288 return ret;
289 }
290
291 ctx->params.jpeg_restart_interval = header.restart_interval;
292
293 /* check frame header */
294 if (header.frame.height > ctx->codec->max_h ||
295 header.frame.width > ctx->codec->max_w) {
296 v4l2_err(&dev->v4l2_dev, "invalid dimensions: %dx%d\n",
297 header.frame.width, header.frame.height);
298 return -EINVAL;
299 }
300
301 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
302 if (header.frame.height != q_data_src->height ||
303 header.frame.width != q_data_src->width) {
304 v4l2_err(&dev->v4l2_dev,
305 "dimensions don't match format: %dx%d\n",
306 header.frame.width, header.frame.height);
307 return -EINVAL;
308 }
309
310 if (header.frame.num_components != 3) {
311 v4l2_err(&dev->v4l2_dev,
312 "unsupported number of components: %d\n",
313 header.frame.num_components);
314 return -EINVAL;
315 }
316
317 /* install quantization tables */
318 if (quantization_tables[3].start) {
319 v4l2_err(&dev->v4l2_dev,
320 "only 3 quantization tables supported\n");
321 return -EINVAL;
322 }
323 for (i = 0; i < 3; i++) {
324 if (!quantization_tables[i].start)
325 continue;
326 if (quantization_tables[i].length != 64) {
327 v4l2_err(&dev->v4l2_dev,
328 "only 8-bit quantization tables supported\n");
329 continue;
330 }
331 if (!ctx->params.jpeg_qmat_tab[i]) {
332 ctx->params.jpeg_qmat_tab[i] = kmalloc(64, GFP_KERNEL);
333 if (!ctx->params.jpeg_qmat_tab[i])
334 return -ENOMEM;
335 }
336 memcpy(ctx->params.jpeg_qmat_tab[i],
337 quantization_tables[i].start, 64);
338 }
339
340 /* install Huffman tables */
341 for (i = 0; i < 4; i++) {
342 if (!huffman_tables[i].start) {
343 v4l2_err(&dev->v4l2_dev, "missing Huffman table\n");
344 return -EINVAL;
345 }
346 /* AC tables should be between 17 -> 178, DC between 17 -> 28 */
347 if (huffman_tables[i].length < 17 ||
348 huffman_tables[i].length > 178 ||
349 ((i & 2) == 0 && huffman_tables[i].length > 28)) {
350 v4l2_err(&dev->v4l2_dev,
351 "invalid Huffman table %d length: %zu\n",
352 i, huffman_tables[i].length);
353 return -EINVAL;
354 }
355 }
356 huff_tab = ctx->params.jpeg_huff_tab;
357 if (!huff_tab) {
358 huff_tab = kzalloc(sizeof(struct coda_huff_tab), GFP_KERNEL);
359 if (!huff_tab)
360 return -ENOMEM;
361 ctx->params.jpeg_huff_tab = huff_tab;
362 }
363
364 memset(huff_tab, 0, sizeof(*huff_tab));
365 memcpy(huff_tab->luma_dc, huffman_tables[0].start, huffman_tables[0].length);
366 memcpy(huff_tab->chroma_dc, huffman_tables[1].start, huffman_tables[1].length);
367 memcpy(huff_tab->luma_ac, huffman_tables[2].start, huffman_tables[2].length);
368 memcpy(huff_tab->chroma_ac, huffman_tables[3].start, huffman_tables[3].length);
369
370 /* check scan header */
371 for (i = 0; i < scan_header.num_components; i++) {
372 struct v4l2_jpeg_scan_component_spec *scan_component;
373
374 scan_component = &scan_header.component[i];
375 for (j = 0; j < header.frame.num_components; j++) {
376 if (header.frame.component[j].component_identifier ==
377 scan_component->component_selector)
378 break;
379 }
380 if (j == header.frame.num_components)
381 continue;
382
383 ctx->params.jpeg_huff_dc_index[j] =
384 scan_component->dc_entropy_coding_table_selector;
385 ctx->params.jpeg_huff_ac_index[j] =
386 scan_component->ac_entropy_coding_table_selector;
387 }
388
389 /* Generate Huffman table information */
390 for (i = 0; i < 4; i++)
391 coda9_jpeg_gen_dec_huff_tab(ctx, i);
392
393 /* start of entropy coded segment */
394 ctx->jpeg_ecs_offset = header.ecs_offset;
395
396 switch (header.frame.subsampling) {
397 case V4L2_JPEG_CHROMA_SUBSAMPLING_420:
398 case V4L2_JPEG_CHROMA_SUBSAMPLING_422:
399 ctx->params.jpeg_chroma_subsampling = header.frame.subsampling;
400 break;
401 default:
402 v4l2_err(&dev->v4l2_dev, "chroma subsampling not supported: %d",
403 header.frame.subsampling);
404 return -EINVAL;
405 }
406
407 return 0;
408 }
409
coda9_jpeg_write_huff_values(struct coda_dev * dev,u8 * bits,int num_values)410 static inline void coda9_jpeg_write_huff_values(struct coda_dev *dev, u8 *bits,
411 int num_values)
412 {
413 s8 *values = (s8 *)(bits + 16);
414 int huff_length, i;
415
416 for (huff_length = 0, i = 0; i < 16; i++)
417 huff_length += bits[i];
418 for (i = huff_length; i < num_values; i++)
419 values[i] = -1;
420 for (i = 0; i < num_values; i++)
421 coda_write(dev, (s32)values[i], CODA9_REG_JPEG_HUFF_DATA);
422 }
423
coda9_jpeg_dec_huff_setup(struct coda_ctx * ctx)424 static void coda9_jpeg_dec_huff_setup(struct coda_ctx *ctx)
425 {
426 struct coda_huff_tab *huff_tab = ctx->params.jpeg_huff_tab;
427 struct coda_dev *dev = ctx->dev;
428 s16 *huff_min = huff_tab->min;
429 s16 *huff_max = huff_tab->max;
430 s8 *huff_ptr = huff_tab->ptr;
431 int i;
432
433 /* MIN Tables */
434 coda_write(dev, 0x003, CODA9_REG_JPEG_HUFF_CTRL);
435 coda_write(dev, 0x000, CODA9_REG_JPEG_HUFF_ADDR);
436 for (i = 0; i < 4 * 16; i++)
437 coda_write(dev, (s32)huff_min[i], CODA9_REG_JPEG_HUFF_DATA);
438
439 /* MAX Tables */
440 coda_write(dev, 0x403, CODA9_REG_JPEG_HUFF_CTRL);
441 coda_write(dev, 0x440, CODA9_REG_JPEG_HUFF_ADDR);
442 for (i = 0; i < 4 * 16; i++)
443 coda_write(dev, (s32)huff_max[i], CODA9_REG_JPEG_HUFF_DATA);
444
445 /* PTR Tables */
446 coda_write(dev, 0x803, CODA9_REG_JPEG_HUFF_CTRL);
447 coda_write(dev, 0x880, CODA9_REG_JPEG_HUFF_ADDR);
448 for (i = 0; i < 4 * 16; i++)
449 coda_write(dev, (s32)huff_ptr[i], CODA9_REG_JPEG_HUFF_DATA);
450
451 /* VAL Tables: DC Luma, DC Chroma, AC Luma, AC Chroma */
452 coda_write(dev, 0xc03, CODA9_REG_JPEG_HUFF_CTRL);
453 coda9_jpeg_write_huff_values(dev, huff_tab->luma_dc, 12);
454 coda9_jpeg_write_huff_values(dev, huff_tab->chroma_dc, 12);
455 coda9_jpeg_write_huff_values(dev, huff_tab->luma_ac, 162);
456 coda9_jpeg_write_huff_values(dev, huff_tab->chroma_ac, 162);
457 coda_write(dev, 0x000, CODA9_REG_JPEG_HUFF_CTRL);
458 }
459
coda9_jpeg_write_qmat_tab(struct coda_dev * dev,u8 * qmat,int index)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
coda9_jpeg_qmat_setup(struct coda_ctx * ctx)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
coda9_jpeg_dec_bbc_gbu_setup(struct coda_ctx * ctx,struct vb2_buffer * buf,u32 ecs_offset)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 */
coda9_jpeg_gen_enc_huff_tab(struct coda_ctx * ctx,int tab_num,int * ehufsi,int * ehufco)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
coda9_jpeg_get_huff_bits(struct coda_ctx * ctx,int tab_num)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
coda9_jpeg_gen_dec_huff_tab(struct coda_ctx * ctx,int tab_num)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
coda9_jpeg_load_huff_tab(struct coda_ctx * ctx)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
coda9_jpeg_write_huff_tab(struct coda_ctx * ctx)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
coda9_jpeg_write_qmat_quotients(struct coda_dev * dev,u8 * qmat,int index)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
coda9_jpeg_load_qmat_tab(struct coda_ctx * ctx)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
coda_jpeg_put_byte(u8 byte,struct coda_jpeg_stream * stream)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
coda_jpeg_put_word(u16 word,struct coda_jpeg_stream * stream)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
coda_jpeg_put_table(u16 marker,u8 index,const u8 * table,size_t len,struct coda_jpeg_stream * stream)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
coda_jpeg_define_quantization_table(struct coda_ctx * ctx,u8 index,struct coda_jpeg_stream * stream)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
coda_jpeg_define_huffman_table(u8 index,const u8 * table,size_t len,struct coda_jpeg_stream * stream)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
coda9_jpeg_encode_header(struct coda_ctx * ctx,int len,u8 * buf)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 */
coda_scale_quant_table(u8 * q_tab,int scale)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
coda_set_jpeg_compression_quality(struct coda_ctx * ctx,int quality)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
coda9_jpeg_start_encoding(struct coda_ctx * ctx)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[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
coda9_jpeg_prepare_encode(struct coda_ctx * ctx)1070 static 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
coda9_jpeg_finish_encode(struct coda_ctx * ctx)1207 static 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
coda9_jpeg_encode_timeout(struct coda_ctx * ctx)1267 static 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
coda9_jpeg_release(struct coda_ctx * ctx)1284 static 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
1298 const 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
coda9_jpeg_start_decoding(struct coda_ctx * ctx)1311 static 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
coda9_jpeg_prepare_decode(struct coda_ctx * ctx)1327 static 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 int scl_hor_mode, scl_ver_mode;
1338
1339 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
1340 dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
1341 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1342 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1343 dst_fourcc = q_data_dst->fourcc;
1344
1345 scl_hor_mode = coda_jpeg_scale(q_data_src->width, q_data_dst->width);
1346 scl_ver_mode = coda_jpeg_scale(q_data_src->height, q_data_dst->height);
1347
1348 if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == 0)
1349 vb2_set_plane_payload(&src_buf->vb2_buf, 0,
1350 vb2_plane_size(&src_buf->vb2_buf, 0));
1351
1352 chroma_format = coda9_jpeg_chroma_format(q_data_dst->fourcc);
1353 if (chroma_format < 0)
1354 return chroma_format;
1355
1356 ret = coda_jpeg_decode_header(ctx, &src_buf->vb2_buf);
1357 if (ret < 0) {
1358 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1359 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1360 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1361 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
1362
1363 return ret;
1364 }
1365
1366 /* Round image dimensions to multiple of MCU size */
1367 aligned_width = round_up(q_data_src->width, width_align[chroma_format]);
1368 aligned_height = round_up(q_data_src->height, height_align[chroma_format]);
1369 if (aligned_width != q_data_dst->bytesperline) {
1370 v4l2_err(&dev->v4l2_dev, "stride mismatch: %d != %d\n",
1371 aligned_width, q_data_dst->bytesperline);
1372 }
1373
1374 coda_set_gdi_regs(ctx);
1375
1376 val = ctx->params.jpeg_huff_ac_index[0] << 12 |
1377 ctx->params.jpeg_huff_ac_index[1] << 11 |
1378 ctx->params.jpeg_huff_ac_index[2] << 10 |
1379 ctx->params.jpeg_huff_dc_index[0] << 9 |
1380 ctx->params.jpeg_huff_dc_index[1] << 8 |
1381 ctx->params.jpeg_huff_dc_index[2] << 7;
1382 if (ctx->params.jpeg_huff_tab)
1383 val |= CODA9_JPEG_PIC_CTRL_USER_HUFFMAN_EN;
1384 coda_write(dev, val, CODA9_REG_JPEG_PIC_CTRL);
1385
1386 coda_write(dev, aligned_width << 16 | aligned_height,
1387 CODA9_REG_JPEG_PIC_SIZE);
1388
1389 chroma_interleave = (dst_fourcc == V4L2_PIX_FMT_NV12);
1390 coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO);
1391 coda_write(dev, bus_req_num[chroma_format], CODA9_REG_JPEG_OP_INFO);
1392 coda_write(dev, mcu_info[chroma_format], CODA9_REG_JPEG_MCU_INFO);
1393 if (scl_hor_mode || scl_ver_mode)
1394 val = CODA9_JPEG_SCL_ENABLE | (scl_hor_mode << 2) | scl_ver_mode;
1395 else
1396 val = 0;
1397 coda_write(dev, val, CODA9_REG_JPEG_SCL_INFO);
1398 coda_write(dev, chroma_interleave, CODA9_REG_JPEG_DPB_CONFIG);
1399 coda_write(dev, ctx->params.jpeg_restart_interval,
1400 CODA9_REG_JPEG_RST_INTVAL);
1401
1402 if (ctx->params.jpeg_huff_tab)
1403 coda9_jpeg_dec_huff_setup(ctx);
1404
1405 coda9_jpeg_qmat_setup(ctx);
1406
1407 coda9_jpeg_dec_bbc_gbu_setup(ctx, &src_buf->vb2_buf,
1408 ctx->jpeg_ecs_offset);
1409
1410 coda_write(dev, 0, CODA9_REG_JPEG_RST_INDEX);
1411 coda_write(dev, 0, CODA9_REG_JPEG_RST_COUNT);
1412
1413 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_Y);
1414 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CB);
1415 coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CR);
1416
1417 coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO);
1418
1419 coda_write(dev, 1, CODA9_GDI_CONTROL);
1420 do {
1421 ret = coda_read(dev, CODA9_GDI_STATUS);
1422 } while (!ret);
1423
1424 val = (chroma_format << 17) | (chroma_interleave << 16) |
1425 q_data_dst->bytesperline;
1426 if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP)
1427 val |= 3 << 20;
1428 coda_write(dev, val, CODA9_GDI_INFO_CONTROL);
1429
1430 coda_write(dev, aligned_width << 16 | aligned_height,
1431 CODA9_GDI_INFO_PIC_SIZE);
1432
1433 coda_write_base(ctx, q_data_dst, dst_buf, CODA9_GDI_INFO_BASE_Y);
1434
1435 coda_write(dev, 0, CODA9_REG_JPEG_DPB_BASE00);
1436 coda_write(dev, 0, CODA9_GDI_CONTROL);
1437 coda_write(dev, 1, CODA9_GDI_PIC_INIT_HOST);
1438
1439 trace_coda_jpeg_run(ctx, src_buf);
1440
1441 coda_write(dev, 1, CODA9_REG_JPEG_PIC_START);
1442
1443 return 0;
1444 }
1445
coda9_jpeg_finish_decode(struct coda_ctx * ctx)1446 static void coda9_jpeg_finish_decode(struct coda_ctx *ctx)
1447 {
1448 struct coda_dev *dev = ctx->dev;
1449 struct vb2_v4l2_buffer *dst_buf, *src_buf;
1450 struct coda_q_data *q_data_dst;
1451 u32 err_mb;
1452
1453 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB);
1454 if (err_mb)
1455 v4l2_err(&dev->v4l2_dev, "ERRMB: 0x%x\n", err_mb);
1456
1457 coda_write(dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD);
1458
1459 /*
1460 * Lock to make sure that a decoder stop command running in parallel
1461 * will either already have marked src_buf as last, or it will wake up
1462 * the capture queue after the buffers are returned.
1463 */
1464 mutex_lock(&ctx->wakeup_mutex);
1465 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1466 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1467 dst_buf->sequence = ctx->osequence++;
1468
1469 trace_coda_jpeg_done(ctx, dst_buf);
1470
1471 dst_buf->flags &= ~(V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_LAST);
1472 dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
1473 dst_buf->flags |= src_buf->flags & V4L2_BUF_FLAG_LAST;
1474
1475 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
1476
1477 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1478 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, q_data_dst->sizeimage);
1479
1480 v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
1481 coda_m2m_buf_done(ctx, dst_buf, err_mb ? VB2_BUF_STATE_ERROR :
1482 VB2_BUF_STATE_DONE);
1483
1484 mutex_unlock(&ctx->wakeup_mutex);
1485
1486 coda_dbg(1, ctx, "job finished: decoded frame (%u)%s\n",
1487 dst_buf->sequence,
1488 (dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : "");
1489
1490 /*
1491 * Reset JPEG processing unit after each decode run to work
1492 * around hangups when switching context between encoder and
1493 * decoder.
1494 */
1495 coda_hw_reset(ctx);
1496 }
1497
1498 const struct coda_context_ops coda9_jpeg_decode_ops = {
1499 .queue_init = coda_encoder_queue_init, /* non-bitstream operation */
1500 .start_streaming = coda9_jpeg_start_decoding,
1501 .prepare_run = coda9_jpeg_prepare_decode,
1502 .finish_run = coda9_jpeg_finish_decode,
1503 .release = coda9_jpeg_release,
1504 };
1505
coda9_jpeg_irq_handler(int irq,void * data)1506 irqreturn_t coda9_jpeg_irq_handler(int irq, void *data)
1507 {
1508 struct coda_dev *dev = data;
1509 struct coda_ctx *ctx;
1510 int status;
1511 int err_mb;
1512
1513 status = coda_read(dev, CODA9_REG_JPEG_PIC_STATUS);
1514 if (status == 0)
1515 return IRQ_HANDLED;
1516 coda_write(dev, status, CODA9_REG_JPEG_PIC_STATUS);
1517
1518 if (status & CODA9_JPEG_STATUS_OVERFLOW)
1519 v4l2_err(&dev->v4l2_dev, "JPEG overflow\n");
1520
1521 if (status & CODA9_JPEG_STATUS_BBC_INT)
1522 v4l2_err(&dev->v4l2_dev, "JPEG BBC interrupt\n");
1523
1524 if (status & CODA9_JPEG_STATUS_ERROR) {
1525 v4l2_err(&dev->v4l2_dev, "JPEG error\n");
1526
1527 err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB);
1528 if (err_mb) {
1529 v4l2_err(&dev->v4l2_dev,
1530 "ERRMB: 0x%x: rst idx %d, mcu pos (%d,%d)\n",
1531 err_mb, err_mb >> 24, (err_mb >> 12) & 0xfff,
1532 err_mb & 0xfff);
1533 }
1534 }
1535
1536 ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
1537 if (!ctx) {
1538 v4l2_err(&dev->v4l2_dev,
1539 "Instance released before the end of transaction\n");
1540 mutex_unlock(&dev->coda_mutex);
1541 return IRQ_HANDLED;
1542 }
1543
1544 complete(&ctx->completion);
1545
1546 return IRQ_HANDLED;
1547 }
1548