Andrzej Pietrasiewicz | bb677f3 | 2011-11-24 11:15:23 -0300 | [diff] [blame] | 1 | /* linux/drivers/media/video/s5p-jpeg/jpeg-core.c |
| 2 | * |
| 3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com |
| 5 | * |
| 6 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/clk.h> |
| 14 | #include <linux/err.h> |
| 15 | #include <linux/gfp.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/io.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/pm_runtime.h> |
| 22 | #include <linux/slab.h> |
| 23 | #include <linux/spinlock.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <media/v4l2-mem2mem.h> |
| 26 | #include <media/v4l2-ioctl.h> |
| 27 | #include <media/videobuf2-core.h> |
| 28 | #include <media/videobuf2-dma-contig.h> |
| 29 | |
| 30 | #include "jpeg-core.h" |
| 31 | #include "jpeg-hw.h" |
| 32 | |
| 33 | static struct s5p_jpeg_fmt formats_enc[] = { |
| 34 | { |
| 35 | .name = "YUV 4:2:0 planar, YCbCr", |
| 36 | .fourcc = V4L2_PIX_FMT_YUV420, |
| 37 | .depth = 12, |
| 38 | .colplanes = 3, |
| 39 | .types = MEM2MEM_CAPTURE, |
| 40 | }, |
| 41 | { |
| 42 | .name = "YUV 4:2:2 packed, YCbYCr", |
| 43 | .fourcc = V4L2_PIX_FMT_YUYV, |
| 44 | .depth = 16, |
| 45 | .colplanes = 1, |
| 46 | .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT, |
| 47 | }, |
| 48 | { |
| 49 | .name = "RGB565", |
| 50 | .fourcc = V4L2_PIX_FMT_RGB565, |
| 51 | .depth = 16, |
| 52 | .colplanes = 1, |
| 53 | .types = MEM2MEM_OUTPUT, |
| 54 | }, |
| 55 | }; |
| 56 | #define NUM_FORMATS_ENC ARRAY_SIZE(formats_enc) |
| 57 | |
| 58 | static struct s5p_jpeg_fmt formats_dec[] = { |
| 59 | { |
| 60 | .name = "YUV 4:2:0 planar, YCbCr", |
| 61 | .fourcc = V4L2_PIX_FMT_YUV420, |
| 62 | .depth = 12, |
| 63 | .colplanes = 3, |
| 64 | .h_align = 4, |
| 65 | .v_align = 4, |
| 66 | .types = MEM2MEM_CAPTURE, |
| 67 | }, |
| 68 | { |
| 69 | .name = "YUV 4:2:2 packed, YCbYCr", |
| 70 | .fourcc = V4L2_PIX_FMT_YUYV, |
| 71 | .depth = 16, |
| 72 | .colplanes = 1, |
| 73 | .h_align = 4, |
| 74 | .v_align = 3, |
| 75 | .types = MEM2MEM_CAPTURE, |
| 76 | }, |
| 77 | { |
| 78 | .name = "JPEG JFIF", |
| 79 | .fourcc = V4L2_PIX_FMT_JPEG, |
| 80 | .colplanes = 1, |
| 81 | .types = MEM2MEM_OUTPUT, |
| 82 | }, |
| 83 | }; |
| 84 | #define NUM_FORMATS_DEC ARRAY_SIZE(formats_dec) |
| 85 | |
| 86 | static const unsigned char qtbl_luminance[4][64] = { |
| 87 | {/* level 1 - high quality */ |
| 88 | 8, 6, 6, 8, 12, 14, 16, 17, |
| 89 | 6, 6, 6, 8, 10, 13, 12, 15, |
| 90 | 6, 6, 7, 8, 13, 14, 18, 24, |
| 91 | 8, 8, 8, 14, 13, 19, 24, 35, |
| 92 | 12, 10, 13, 13, 20, 26, 34, 39, |
| 93 | 14, 13, 14, 19, 26, 34, 39, 39, |
| 94 | 16, 12, 18, 24, 34, 39, 39, 39, |
| 95 | 17, 15, 24, 35, 39, 39, 39, 39 |
| 96 | }, |
| 97 | {/* level 2 */ |
| 98 | 12, 8, 8, 12, 17, 21, 24, 23, |
| 99 | 8, 9, 9, 11, 15, 19, 18, 23, |
| 100 | 8, 9, 10, 12, 19, 20, 27, 36, |
| 101 | 12, 11, 12, 21, 20, 28, 36, 53, |
| 102 | 17, 15, 19, 20, 30, 39, 51, 59, |
| 103 | 21, 19, 20, 28, 39, 51, 59, 59, |
| 104 | 24, 18, 27, 36, 51, 59, 59, 59, |
| 105 | 23, 23, 36, 53, 59, 59, 59, 59 |
| 106 | }, |
| 107 | {/* level 3 */ |
| 108 | 16, 11, 11, 16, 23, 27, 31, 30, |
| 109 | 11, 12, 12, 15, 20, 23, 23, 30, |
| 110 | 11, 12, 13, 16, 23, 26, 35, 47, |
| 111 | 16, 15, 16, 23, 26, 37, 47, 64, |
| 112 | 23, 20, 23, 26, 39, 51, 64, 64, |
| 113 | 27, 23, 26, 37, 51, 64, 64, 64, |
| 114 | 31, 23, 35, 47, 64, 64, 64, 64, |
| 115 | 30, 30, 47, 64, 64, 64, 64, 64 |
| 116 | }, |
| 117 | {/*level 4 - low quality */ |
| 118 | 20, 16, 25, 39, 50, 46, 62, 68, |
| 119 | 16, 18, 23, 38, 38, 53, 65, 68, |
| 120 | 25, 23, 31, 38, 53, 65, 68, 68, |
| 121 | 39, 38, 38, 53, 65, 68, 68, 68, |
| 122 | 50, 38, 53, 65, 68, 68, 68, 68, |
| 123 | 46, 53, 65, 68, 68, 68, 68, 68, |
| 124 | 62, 65, 68, 68, 68, 68, 68, 68, |
| 125 | 68, 68, 68, 68, 68, 68, 68, 68 |
| 126 | } |
| 127 | }; |
| 128 | |
| 129 | static const unsigned char qtbl_chrominance[4][64] = { |
| 130 | {/* level 1 - high quality */ |
| 131 | 9, 8, 9, 11, 14, 17, 19, 24, |
| 132 | 8, 10, 9, 11, 14, 13, 17, 22, |
| 133 | 9, 9, 13, 14, 13, 15, 23, 26, |
| 134 | 11, 11, 14, 14, 15, 20, 26, 33, |
| 135 | 14, 14, 13, 15, 20, 24, 33, 39, |
| 136 | 17, 13, 15, 20, 24, 32, 39, 39, |
| 137 | 19, 17, 23, 26, 33, 39, 39, 39, |
| 138 | 24, 22, 26, 33, 39, 39, 39, 39 |
| 139 | }, |
| 140 | {/* level 2 */ |
| 141 | 13, 11, 13, 16, 20, 20, 29, 37, |
| 142 | 11, 14, 14, 14, 16, 20, 26, 32, |
| 143 | 13, 14, 15, 17, 20, 23, 35, 40, |
| 144 | 16, 14, 17, 21, 23, 30, 40, 50, |
| 145 | 20, 16, 20, 23, 30, 37, 50, 59, |
| 146 | 20, 20, 23, 30, 37, 48, 59, 59, |
| 147 | 29, 26, 35, 40, 50, 59, 59, 59, |
| 148 | 37, 32, 40, 50, 59, 59, 59, 59 |
| 149 | }, |
| 150 | {/* level 3 */ |
| 151 | 17, 15, 17, 21, 20, 26, 38, 48, |
| 152 | 15, 19, 18, 17, 20, 26, 35, 43, |
| 153 | 17, 18, 20, 22, 26, 30, 46, 53, |
| 154 | 21, 17, 22, 28, 30, 39, 53, 64, |
| 155 | 20, 20, 26, 30, 39, 48, 64, 64, |
| 156 | 26, 26, 30, 39, 48, 63, 64, 64, |
| 157 | 38, 35, 46, 53, 64, 64, 64, 64, |
| 158 | 48, 43, 53, 64, 64, 64, 64, 64 |
| 159 | }, |
| 160 | {/*level 4 - low quality */ |
| 161 | 21, 25, 32, 38, 54, 68, 68, 68, |
| 162 | 25, 28, 24, 38, 54, 68, 68, 68, |
| 163 | 32, 24, 32, 43, 66, 68, 68, 68, |
| 164 | 38, 38, 43, 53, 68, 68, 68, 68, |
| 165 | 54, 54, 66, 68, 68, 68, 68, 68, |
| 166 | 68, 68, 68, 68, 68, 68, 68, 68, |
| 167 | 68, 68, 68, 68, 68, 68, 68, 68, |
| 168 | 68, 68, 68, 68, 68, 68, 68, 68 |
| 169 | } |
| 170 | }; |
| 171 | |
| 172 | static const unsigned char hdctbl0[16] = { |
| 173 | 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 |
| 174 | }; |
| 175 | |
| 176 | static const unsigned char hdctblg0[12] = { |
| 177 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb |
| 178 | }; |
| 179 | static const unsigned char hactbl0[16] = { |
| 180 | 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d |
| 181 | }; |
| 182 | static const unsigned char hactblg0[162] = { |
| 183 | 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, |
| 184 | 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, |
| 185 | 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, |
| 186 | 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, |
| 187 | 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, |
| 188 | 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, |
| 189 | 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, |
| 190 | 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, |
| 191 | 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, |
| 192 | 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, |
| 193 | 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, |
| 194 | 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, |
| 195 | 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, |
| 196 | 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 197 | 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, |
| 198 | 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, |
| 199 | 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, |
| 200 | 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, |
| 201 | 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, |
| 202 | 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
| 203 | 0xf9, 0xfa |
| 204 | }; |
| 205 | |
| 206 | static inline void jpeg_set_qtbl(void __iomem *regs, const unsigned char *qtbl, |
| 207 | unsigned long tab, int len) |
| 208 | { |
| 209 | int i; |
| 210 | |
| 211 | for (i = 0; i < len; i++) |
| 212 | writel((unsigned int)qtbl[i], regs + tab + (i * 0x04)); |
| 213 | } |
| 214 | |
| 215 | static inline void jpeg_set_qtbl_lum(void __iomem *regs, int quality) |
| 216 | { |
| 217 | /* this driver fills quantisation table 0 with data for luma */ |
| 218 | jpeg_set_qtbl(regs, qtbl_luminance[quality], S5P_JPG_QTBL_CONTENT(0), |
| 219 | ARRAY_SIZE(qtbl_luminance[quality])); |
| 220 | } |
| 221 | |
| 222 | static inline void jpeg_set_qtbl_chr(void __iomem *regs, int quality) |
| 223 | { |
| 224 | /* this driver fills quantisation table 1 with data for chroma */ |
| 225 | jpeg_set_qtbl(regs, qtbl_chrominance[quality], S5P_JPG_QTBL_CONTENT(1), |
| 226 | ARRAY_SIZE(qtbl_chrominance[quality])); |
| 227 | } |
| 228 | |
| 229 | static inline void jpeg_set_htbl(void __iomem *regs, const unsigned char *htbl, |
| 230 | unsigned long tab, int len) |
| 231 | { |
| 232 | int i; |
| 233 | |
| 234 | for (i = 0; i < len; i++) |
| 235 | writel((unsigned int)htbl[i], regs + tab + (i * 0x04)); |
| 236 | } |
| 237 | |
| 238 | static inline void jpeg_set_hdctbl(void __iomem *regs) |
| 239 | { |
| 240 | /* this driver fills table 0 for this component */ |
| 241 | jpeg_set_htbl(regs, hdctbl0, S5P_JPG_HDCTBL(0), ARRAY_SIZE(hdctbl0)); |
| 242 | } |
| 243 | |
| 244 | static inline void jpeg_set_hdctblg(void __iomem *regs) |
| 245 | { |
| 246 | /* this driver fills table 0 for this component */ |
| 247 | jpeg_set_htbl(regs, hdctblg0, S5P_JPG_HDCTBLG(0), ARRAY_SIZE(hdctblg0)); |
| 248 | } |
| 249 | |
| 250 | static inline void jpeg_set_hactbl(void __iomem *regs) |
| 251 | { |
| 252 | /* this driver fills table 0 for this component */ |
| 253 | jpeg_set_htbl(regs, hactbl0, S5P_JPG_HACTBL(0), ARRAY_SIZE(hactbl0)); |
| 254 | } |
| 255 | |
| 256 | static inline void jpeg_set_hactblg(void __iomem *regs) |
| 257 | { |
| 258 | /* this driver fills table 0 for this component */ |
| 259 | jpeg_set_htbl(regs, hactblg0, S5P_JPG_HACTBLG(0), ARRAY_SIZE(hactblg0)); |
| 260 | } |
| 261 | |
| 262 | /* |
| 263 | * ============================================================================ |
| 264 | * Device file operations |
| 265 | * ============================================================================ |
| 266 | */ |
| 267 | |
| 268 | static int queue_init(void *priv, struct vb2_queue *src_vq, |
| 269 | struct vb2_queue *dst_vq); |
| 270 | static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode, |
| 271 | __u32 pixelformat); |
| 272 | |
| 273 | static int s5p_jpeg_open(struct file *file) |
| 274 | { |
| 275 | struct s5p_jpeg *jpeg = video_drvdata(file); |
| 276 | struct video_device *vfd = video_devdata(file); |
| 277 | struct s5p_jpeg_ctx *ctx; |
| 278 | struct s5p_jpeg_fmt *out_fmt; |
| 279 | |
| 280 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); |
| 281 | if (!ctx) |
| 282 | return -ENOMEM; |
| 283 | |
| 284 | file->private_data = ctx; |
| 285 | ctx->jpeg = jpeg; |
| 286 | if (vfd == jpeg->vfd_encoder) { |
| 287 | ctx->mode = S5P_JPEG_ENCODE; |
| 288 | out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_RGB565); |
| 289 | } else { |
| 290 | ctx->mode = S5P_JPEG_DECODE; |
| 291 | out_fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_JPEG); |
| 292 | } |
| 293 | |
| 294 | ctx->m2m_ctx = v4l2_m2m_ctx_init(jpeg->m2m_dev, ctx, queue_init); |
| 295 | if (IS_ERR(ctx->m2m_ctx)) { |
| 296 | int err = PTR_ERR(ctx->m2m_ctx); |
| 297 | kfree(ctx); |
| 298 | return err; |
| 299 | } |
| 300 | |
| 301 | ctx->out_q.fmt = out_fmt; |
| 302 | ctx->cap_q.fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_YUYV); |
| 303 | |
| 304 | return 0; |
| 305 | } |
| 306 | |
| 307 | static int s5p_jpeg_release(struct file *file) |
| 308 | { |
| 309 | struct s5p_jpeg_ctx *ctx = file->private_data; |
| 310 | |
| 311 | v4l2_m2m_ctx_release(ctx->m2m_ctx); |
| 312 | kfree(ctx); |
| 313 | |
| 314 | return 0; |
| 315 | } |
| 316 | |
| 317 | static unsigned int s5p_jpeg_poll(struct file *file, |
| 318 | struct poll_table_struct *wait) |
| 319 | { |
| 320 | struct s5p_jpeg_ctx *ctx = file->private_data; |
| 321 | |
| 322 | return v4l2_m2m_poll(file, ctx->m2m_ctx, wait); |
| 323 | } |
| 324 | |
| 325 | static int s5p_jpeg_mmap(struct file *file, struct vm_area_struct *vma) |
| 326 | { |
| 327 | struct s5p_jpeg_ctx *ctx = file->private_data; |
| 328 | |
| 329 | return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); |
| 330 | } |
| 331 | |
| 332 | static const struct v4l2_file_operations s5p_jpeg_fops = { |
| 333 | .owner = THIS_MODULE, |
| 334 | .open = s5p_jpeg_open, |
| 335 | .release = s5p_jpeg_release, |
| 336 | .poll = s5p_jpeg_poll, |
| 337 | .unlocked_ioctl = video_ioctl2, |
| 338 | .mmap = s5p_jpeg_mmap, |
| 339 | }; |
| 340 | |
| 341 | /* |
| 342 | * ============================================================================ |
| 343 | * video ioctl operations |
| 344 | * ============================================================================ |
| 345 | */ |
| 346 | |
| 347 | static int get_byte(struct s5p_jpeg_buffer *buf) |
| 348 | { |
| 349 | if (buf->curr >= buf->size) |
| 350 | return -1; |
| 351 | |
| 352 | return ((unsigned char *)buf->data)[buf->curr++]; |
| 353 | } |
| 354 | |
| 355 | static int get_word_be(struct s5p_jpeg_buffer *buf, unsigned int *word) |
| 356 | { |
| 357 | unsigned int temp; |
| 358 | int byte; |
| 359 | |
| 360 | byte = get_byte(buf); |
| 361 | if (byte == -1) |
| 362 | return -1; |
| 363 | temp = byte << 8; |
| 364 | byte = get_byte(buf); |
| 365 | if (byte == -1) |
| 366 | return -1; |
| 367 | *word = (unsigned int)byte | temp; |
| 368 | return 0; |
| 369 | } |
| 370 | |
| 371 | static void skip(struct s5p_jpeg_buffer *buf, long len) |
| 372 | { |
| 373 | if (len <= 0) |
| 374 | return; |
| 375 | |
| 376 | while (len--) |
| 377 | get_byte(buf); |
| 378 | } |
| 379 | |
| 380 | static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, |
| 381 | unsigned long buffer, unsigned long size) |
| 382 | { |
| 383 | int c, components, notfound; |
| 384 | unsigned int height, width, word; |
| 385 | long length; |
| 386 | struct s5p_jpeg_buffer jpeg_buffer; |
| 387 | |
| 388 | jpeg_buffer.size = size; |
| 389 | jpeg_buffer.data = buffer; |
| 390 | jpeg_buffer.curr = 0; |
| 391 | |
| 392 | notfound = 1; |
| 393 | while (notfound) { |
| 394 | c = get_byte(&jpeg_buffer); |
| 395 | if (c == -1) |
| 396 | break; |
| 397 | if (c != 0xff) |
| 398 | continue; |
| 399 | do |
| 400 | c = get_byte(&jpeg_buffer); |
| 401 | while (c == 0xff); |
| 402 | if (c == -1) |
| 403 | break; |
| 404 | if (c == 0) |
| 405 | continue; |
| 406 | length = 0; |
| 407 | switch (c) { |
| 408 | /* SOF0: baseline JPEG */ |
| 409 | case SOF0: |
| 410 | if (get_word_be(&jpeg_buffer, &word)) |
| 411 | break; |
| 412 | if (get_byte(&jpeg_buffer) == -1) |
| 413 | break; |
| 414 | if (get_word_be(&jpeg_buffer, &height)) |
| 415 | break; |
| 416 | if (get_word_be(&jpeg_buffer, &width)) |
| 417 | break; |
| 418 | components = get_byte(&jpeg_buffer); |
| 419 | if (components == -1) |
| 420 | break; |
| 421 | notfound = 0; |
| 422 | |
| 423 | skip(&jpeg_buffer, components * 3); |
| 424 | break; |
| 425 | |
| 426 | /* skip payload-less markers */ |
| 427 | case RST ... RST + 7: |
| 428 | case SOI: |
| 429 | case EOI: |
| 430 | case TEM: |
| 431 | break; |
| 432 | |
| 433 | /* skip uninteresting payload markers */ |
| 434 | default: |
| 435 | if (get_word_be(&jpeg_buffer, &word)) |
| 436 | break; |
| 437 | length = (long)word - 2; |
| 438 | skip(&jpeg_buffer, length); |
| 439 | break; |
| 440 | } |
| 441 | } |
| 442 | result->w = width; |
| 443 | result->h = height; |
| 444 | result->size = components; |
| 445 | return !notfound; |
| 446 | } |
| 447 | |
| 448 | static int s5p_jpeg_querycap(struct file *file, void *priv, |
| 449 | struct v4l2_capability *cap) |
| 450 | { |
| 451 | struct s5p_jpeg_ctx *ctx = priv; |
| 452 | |
| 453 | if (ctx->mode == S5P_JPEG_ENCODE) { |
| 454 | strlcpy(cap->driver, S5P_JPEG_M2M_NAME " encoder", |
| 455 | sizeof(cap->driver)); |
| 456 | strlcpy(cap->card, S5P_JPEG_M2M_NAME " encoder", |
| 457 | sizeof(cap->card)); |
| 458 | } else { |
| 459 | strlcpy(cap->driver, S5P_JPEG_M2M_NAME " decoder", |
| 460 | sizeof(cap->driver)); |
| 461 | strlcpy(cap->card, S5P_JPEG_M2M_NAME " decoder", |
| 462 | sizeof(cap->card)); |
| 463 | } |
| 464 | cap->bus_info[0] = 0; |
| 465 | cap->capabilities = V4L2_CAP_STREAMING | |
| 466 | V4L2_CAP_VIDEO_CAPTURE | |
| 467 | V4L2_CAP_VIDEO_OUTPUT; |
| 468 | return 0; |
| 469 | } |
| 470 | |
| 471 | static int enum_fmt(struct s5p_jpeg_fmt *formats, int n, |
| 472 | struct v4l2_fmtdesc *f, u32 type) |
| 473 | { |
| 474 | int i, num = 0; |
| 475 | |
| 476 | for (i = 0; i < n; ++i) { |
| 477 | if (formats[i].types & type) { |
| 478 | /* index-th format of type type found ? */ |
| 479 | if (num == f->index) |
| 480 | break; |
| 481 | /* Correct type but haven't reached our index yet, |
| 482 | * just increment per-type index */ |
| 483 | ++num; |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | /* Format not found */ |
| 488 | if (i >= n) |
| 489 | return -EINVAL; |
| 490 | |
| 491 | strlcpy(f->description, formats[i].name, sizeof(f->description)); |
| 492 | f->pixelformat = formats[i].fourcc; |
| 493 | |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | static int s5p_jpeg_enum_fmt_vid_cap(struct file *file, void *priv, |
| 498 | struct v4l2_fmtdesc *f) |
| 499 | { |
| 500 | struct s5p_jpeg_ctx *ctx; |
| 501 | |
| 502 | ctx = priv; |
| 503 | |
| 504 | if (ctx->mode == S5P_JPEG_ENCODE) |
| 505 | return enum_fmt(formats_enc, NUM_FORMATS_ENC, f, |
| 506 | MEM2MEM_CAPTURE); |
| 507 | |
| 508 | return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_CAPTURE); |
| 509 | } |
| 510 | |
| 511 | static int s5p_jpeg_enum_fmt_vid_out(struct file *file, void *priv, |
| 512 | struct v4l2_fmtdesc *f) |
| 513 | { |
| 514 | struct s5p_jpeg_ctx *ctx; |
| 515 | |
| 516 | ctx = priv; |
| 517 | |
| 518 | if (ctx->mode == S5P_JPEG_ENCODE) |
| 519 | return enum_fmt(formats_enc, NUM_FORMATS_ENC, f, |
| 520 | MEM2MEM_OUTPUT); |
| 521 | |
| 522 | return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_OUTPUT); |
| 523 | } |
| 524 | |
| 525 | static struct s5p_jpeg_q_data *get_q_data(struct s5p_jpeg_ctx *ctx, |
| 526 | enum v4l2_buf_type type) |
| 527 | { |
| 528 | if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 529 | return &ctx->out_q; |
| 530 | if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 531 | return &ctx->cap_q; |
| 532 | |
| 533 | return NULL; |
| 534 | } |
| 535 | |
| 536 | static int s5p_jpeg_g_fmt(struct file *file, void *priv, struct v4l2_format *f) |
| 537 | { |
| 538 | struct vb2_queue *vq; |
| 539 | struct s5p_jpeg_q_data *q_data = NULL; |
| 540 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 541 | struct s5p_jpeg_ctx *ct = priv; |
| 542 | |
| 543 | vq = v4l2_m2m_get_vq(ct->m2m_ctx, f->type); |
| 544 | if (!vq) |
| 545 | return -EINVAL; |
| 546 | |
| 547 | if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && |
| 548 | ct->mode == S5P_JPEG_DECODE && !ct->hdr_parsed) |
| 549 | return -EINVAL; |
| 550 | q_data = get_q_data(ct, f->type); |
| 551 | BUG_ON(q_data == NULL); |
| 552 | |
| 553 | pix->width = q_data->w; |
| 554 | pix->height = q_data->h; |
| 555 | pix->field = V4L2_FIELD_NONE; |
| 556 | pix->pixelformat = q_data->fmt->fourcc; |
| 557 | pix->bytesperline = 0; |
| 558 | if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) { |
| 559 | u32 bpl = q_data->w; |
| 560 | if (q_data->fmt->colplanes == 1) |
| 561 | bpl = (bpl * q_data->fmt->depth) >> 3; |
| 562 | pix->bytesperline = bpl; |
| 563 | } |
| 564 | pix->sizeimage = q_data->size; |
| 565 | |
| 566 | return 0; |
| 567 | } |
| 568 | |
| 569 | static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode, |
| 570 | u32 pixelformat) |
| 571 | { |
| 572 | unsigned int k; |
| 573 | struct s5p_jpeg_fmt *formats; |
| 574 | int n; |
| 575 | |
| 576 | if (mode == S5P_JPEG_ENCODE) { |
| 577 | formats = formats_enc; |
| 578 | n = NUM_FORMATS_ENC; |
| 579 | } else { |
| 580 | formats = formats_dec; |
| 581 | n = NUM_FORMATS_DEC; |
| 582 | } |
| 583 | |
| 584 | for (k = 0; k < n; k++) { |
| 585 | struct s5p_jpeg_fmt *fmt = &formats[k]; |
| 586 | if (fmt->fourcc == pixelformat) |
| 587 | return fmt; |
| 588 | } |
| 589 | |
| 590 | return NULL; |
| 591 | |
| 592 | } |
| 593 | |
| 594 | static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax, |
| 595 | unsigned int walign, |
| 596 | u32 *h, unsigned int hmin, unsigned int hmax, |
| 597 | unsigned int halign) |
| 598 | { |
| 599 | int width, height, w_step, h_step; |
| 600 | |
| 601 | width = *w; |
| 602 | height = *h; |
| 603 | |
| 604 | w_step = 1 << walign; |
| 605 | h_step = 1 << halign; |
| 606 | v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 0); |
| 607 | |
| 608 | if (*w < width && (*w + w_step) < wmax) |
| 609 | *w += w_step; |
| 610 | if (*h < height && (*h + h_step) < hmax) |
| 611 | *h += h_step; |
| 612 | |
| 613 | } |
| 614 | |
| 615 | static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt, |
| 616 | struct s5p_jpeg_ctx *ctx, int q_type) |
| 617 | { |
| 618 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 619 | |
| 620 | if (pix->field == V4L2_FIELD_ANY) |
| 621 | pix->field = V4L2_FIELD_NONE; |
| 622 | else if (pix->field != V4L2_FIELD_NONE) |
| 623 | return -EINVAL; |
| 624 | |
| 625 | /* V4L2 specification suggests the driver corrects the format struct |
| 626 | * if any of the dimensions is unsupported */ |
| 627 | if (q_type == MEM2MEM_OUTPUT) |
| 628 | jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH, |
| 629 | S5P_JPEG_MAX_WIDTH, 0, |
| 630 | &pix->height, S5P_JPEG_MIN_HEIGHT, |
| 631 | S5P_JPEG_MAX_HEIGHT, 0); |
| 632 | else |
| 633 | jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH, |
| 634 | S5P_JPEG_MAX_WIDTH, fmt->h_align, |
| 635 | &pix->height, S5P_JPEG_MIN_HEIGHT, |
| 636 | S5P_JPEG_MAX_HEIGHT, fmt->v_align); |
| 637 | |
| 638 | if (fmt->fourcc == V4L2_PIX_FMT_JPEG) { |
| 639 | if (pix->sizeimage <= 0) |
| 640 | pix->sizeimage = PAGE_SIZE; |
| 641 | pix->bytesperline = 0; |
| 642 | } else { |
| 643 | u32 bpl = pix->bytesperline; |
| 644 | |
| 645 | if (fmt->colplanes > 1 && bpl < pix->width) |
| 646 | bpl = pix->width; /* planar */ |
| 647 | |
| 648 | if (fmt->colplanes == 1 && /* packed */ |
| 649 | (bpl << 3) * fmt->depth < pix->width) |
| 650 | bpl = (pix->width * fmt->depth) >> 3; |
| 651 | |
| 652 | pix->bytesperline = bpl; |
| 653 | pix->sizeimage = (pix->width * pix->height * fmt->depth) >> 3; |
| 654 | } |
| 655 | |
| 656 | return 0; |
| 657 | } |
| 658 | |
| 659 | static int s5p_jpeg_try_fmt_vid_cap(struct file *file, void *priv, |
| 660 | struct v4l2_format *f) |
| 661 | { |
| 662 | struct s5p_jpeg_fmt *fmt; |
| 663 | struct s5p_jpeg_ctx *ctx = priv; |
| 664 | |
| 665 | fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat); |
| 666 | if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) { |
| 667 | v4l2_err(&ctx->jpeg->v4l2_dev, |
| 668 | "Fourcc format (0x%08x) invalid.\n", |
| 669 | f->fmt.pix.pixelformat); |
| 670 | return -EINVAL; |
| 671 | } |
| 672 | |
| 673 | return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_CAPTURE); |
| 674 | } |
| 675 | |
| 676 | static int s5p_jpeg_try_fmt_vid_out(struct file *file, void *priv, |
| 677 | struct v4l2_format *f) |
| 678 | { |
| 679 | struct s5p_jpeg_fmt *fmt; |
| 680 | struct s5p_jpeg_ctx *ctx = priv; |
| 681 | |
| 682 | fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat); |
| 683 | if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) { |
| 684 | v4l2_err(&ctx->jpeg->v4l2_dev, |
| 685 | "Fourcc format (0x%08x) invalid.\n", |
| 686 | f->fmt.pix.pixelformat); |
| 687 | return -EINVAL; |
| 688 | } |
| 689 | |
| 690 | return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_OUTPUT); |
| 691 | } |
| 692 | |
| 693 | static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) |
| 694 | { |
| 695 | struct vb2_queue *vq; |
| 696 | struct s5p_jpeg_q_data *q_data = NULL; |
| 697 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 698 | |
| 699 | vq = v4l2_m2m_get_vq(ct->m2m_ctx, f->type); |
| 700 | if (!vq) |
| 701 | return -EINVAL; |
| 702 | |
| 703 | q_data = get_q_data(ct, f->type); |
| 704 | BUG_ON(q_data == NULL); |
| 705 | |
| 706 | if (vb2_is_busy(vq)) { |
| 707 | v4l2_err(&ct->jpeg->v4l2_dev, "%s queue busy\n", __func__); |
| 708 | return -EBUSY; |
| 709 | } |
| 710 | |
| 711 | q_data->fmt = s5p_jpeg_find_format(ct->mode, pix->pixelformat); |
| 712 | q_data->w = pix->width; |
| 713 | q_data->h = pix->height; |
| 714 | if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) |
| 715 | q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3; |
| 716 | else |
| 717 | q_data->size = pix->sizeimage; |
| 718 | |
| 719 | return 0; |
| 720 | } |
| 721 | |
| 722 | static int s5p_jpeg_s_fmt_vid_cap(struct file *file, void *priv, |
| 723 | struct v4l2_format *f) |
| 724 | { |
| 725 | int ret; |
| 726 | |
| 727 | ret = s5p_jpeg_try_fmt_vid_cap(file, priv, f); |
| 728 | if (ret) |
| 729 | return ret; |
| 730 | |
| 731 | return s5p_jpeg_s_fmt(priv, f); |
| 732 | } |
| 733 | |
| 734 | static int s5p_jpeg_s_fmt_vid_out(struct file *file, void *priv, |
| 735 | struct v4l2_format *f) |
| 736 | { |
| 737 | int ret; |
| 738 | |
| 739 | ret = s5p_jpeg_try_fmt_vid_out(file, priv, f); |
| 740 | if (ret) |
| 741 | return ret; |
| 742 | |
| 743 | return s5p_jpeg_s_fmt(priv, f); |
| 744 | } |
| 745 | |
| 746 | static int s5p_jpeg_reqbufs(struct file *file, void *priv, |
| 747 | struct v4l2_requestbuffers *reqbufs) |
| 748 | { |
| 749 | struct s5p_jpeg_ctx *ctx = priv; |
| 750 | |
| 751 | return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); |
| 752 | } |
| 753 | |
| 754 | static int s5p_jpeg_querybuf(struct file *file, void *priv, |
| 755 | struct v4l2_buffer *buf) |
| 756 | { |
| 757 | struct s5p_jpeg_ctx *ctx = priv; |
| 758 | |
| 759 | return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); |
| 760 | } |
| 761 | |
| 762 | static int s5p_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) |
| 763 | { |
| 764 | struct s5p_jpeg_ctx *ctx = priv; |
| 765 | |
| 766 | return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); |
| 767 | } |
| 768 | |
| 769 | static int s5p_jpeg_dqbuf(struct file *file, void *priv, |
| 770 | struct v4l2_buffer *buf) |
| 771 | { |
| 772 | struct s5p_jpeg_ctx *ctx = priv; |
| 773 | |
| 774 | return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); |
| 775 | } |
| 776 | |
| 777 | static int s5p_jpeg_streamon(struct file *file, void *priv, |
| 778 | enum v4l2_buf_type type) |
| 779 | { |
| 780 | struct s5p_jpeg_ctx *ctx = priv; |
| 781 | |
| 782 | return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); |
| 783 | } |
| 784 | |
| 785 | static int s5p_jpeg_streamoff(struct file *file, void *priv, |
| 786 | enum v4l2_buf_type type) |
| 787 | { |
| 788 | struct s5p_jpeg_ctx *ctx = priv; |
| 789 | |
| 790 | return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); |
| 791 | } |
| 792 | |
| 793 | int s5p_jpeg_g_selection(struct file *file, void *priv, |
| 794 | struct v4l2_selection *s) |
| 795 | { |
| 796 | struct s5p_jpeg_ctx *ctx = priv; |
| 797 | |
| 798 | if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && |
| 799 | s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 800 | return -EINVAL; |
| 801 | |
| 802 | /* For JPEG blob active == default == bounds */ |
| 803 | switch (s->target) { |
| 804 | case V4L2_SEL_TGT_CROP_ACTIVE: |
| 805 | case V4L2_SEL_TGT_CROP_BOUNDS: |
| 806 | case V4L2_SEL_TGT_CROP_DEFAULT: |
| 807 | case V4L2_SEL_TGT_COMPOSE_ACTIVE: |
| 808 | case V4L2_SEL_TGT_COMPOSE_DEFAULT: |
| 809 | s->r.width = ctx->out_q.w; |
| 810 | s->r.height = ctx->out_q.h; |
| 811 | break; |
| 812 | case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
| 813 | case V4L2_SEL_TGT_COMPOSE_PADDED: |
| 814 | s->r.width = ctx->cap_q.w; |
| 815 | s->r.height = ctx->cap_q.h; |
| 816 | break; |
| 817 | default: |
| 818 | return -EINVAL; |
| 819 | } |
| 820 | s->r.left = 0; |
| 821 | s->r.top = 0; |
| 822 | return 0; |
| 823 | } |
| 824 | |
| 825 | static int s5p_jpeg_g_jpegcomp(struct file *file, void *priv, |
| 826 | struct v4l2_jpegcompression *compr) |
| 827 | { |
| 828 | struct s5p_jpeg_ctx *ctx = priv; |
| 829 | |
| 830 | if (ctx->mode == S5P_JPEG_DECODE) |
| 831 | return -ENOTTY; |
| 832 | |
| 833 | memset(compr, 0, sizeof(*compr)); |
| 834 | compr->quality = ctx->compr_quality; |
| 835 | |
| 836 | return 0; |
| 837 | } |
| 838 | |
| 839 | static int s5p_jpeg_s_jpegcomp(struct file *file, void *priv, |
| 840 | struct v4l2_jpegcompression *compr) |
| 841 | { |
| 842 | struct s5p_jpeg_ctx *ctx = priv; |
| 843 | |
| 844 | if (ctx->mode == S5P_JPEG_DECODE) |
| 845 | return -ENOTTY; |
| 846 | |
| 847 | compr->quality = clamp(compr->quality, S5P_JPEG_COMPR_QUAL_BEST, |
| 848 | S5P_JPEG_COMPR_QUAL_WORST); |
| 849 | |
| 850 | ctx->compr_quality = S5P_JPEG_COMPR_QUAL_WORST - compr->quality; |
| 851 | |
| 852 | return 0; |
| 853 | } |
| 854 | |
| 855 | static const struct v4l2_ioctl_ops s5p_jpeg_ioctl_ops = { |
| 856 | .vidioc_querycap = s5p_jpeg_querycap, |
| 857 | |
| 858 | .vidioc_enum_fmt_vid_cap = s5p_jpeg_enum_fmt_vid_cap, |
| 859 | .vidioc_enum_fmt_vid_out = s5p_jpeg_enum_fmt_vid_out, |
| 860 | |
| 861 | .vidioc_g_fmt_vid_cap = s5p_jpeg_g_fmt, |
| 862 | .vidioc_g_fmt_vid_out = s5p_jpeg_g_fmt, |
| 863 | |
| 864 | .vidioc_try_fmt_vid_cap = s5p_jpeg_try_fmt_vid_cap, |
| 865 | .vidioc_try_fmt_vid_out = s5p_jpeg_try_fmt_vid_out, |
| 866 | |
| 867 | .vidioc_s_fmt_vid_cap = s5p_jpeg_s_fmt_vid_cap, |
| 868 | .vidioc_s_fmt_vid_out = s5p_jpeg_s_fmt_vid_out, |
| 869 | |
| 870 | .vidioc_reqbufs = s5p_jpeg_reqbufs, |
| 871 | .vidioc_querybuf = s5p_jpeg_querybuf, |
| 872 | |
| 873 | .vidioc_qbuf = s5p_jpeg_qbuf, |
| 874 | .vidioc_dqbuf = s5p_jpeg_dqbuf, |
| 875 | |
| 876 | .vidioc_streamon = s5p_jpeg_streamon, |
| 877 | .vidioc_streamoff = s5p_jpeg_streamoff, |
| 878 | |
| 879 | .vidioc_g_selection = s5p_jpeg_g_selection, |
| 880 | |
| 881 | .vidioc_g_jpegcomp = s5p_jpeg_g_jpegcomp, |
| 882 | .vidioc_s_jpegcomp = s5p_jpeg_s_jpegcomp, |
| 883 | }; |
| 884 | |
| 885 | /* |
| 886 | * ============================================================================ |
| 887 | * mem2mem callbacks |
| 888 | * ============================================================================ |
| 889 | */ |
| 890 | |
| 891 | static void s5p_jpeg_device_run(void *priv) |
| 892 | { |
| 893 | struct s5p_jpeg_ctx *ctx = priv; |
| 894 | struct s5p_jpeg *jpeg = ctx->jpeg; |
| 895 | struct vb2_buffer *src_buf, *dst_buf; |
| 896 | unsigned long src_addr, dst_addr; |
| 897 | |
| 898 | src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); |
| 899 | dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); |
| 900 | src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0); |
| 901 | dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0); |
| 902 | |
| 903 | jpeg_reset(jpeg->regs); |
| 904 | jpeg_poweron(jpeg->regs); |
| 905 | jpeg_proc_mode(jpeg->regs, ctx->mode); |
| 906 | if (ctx->mode == S5P_JPEG_ENCODE) { |
| 907 | if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_RGB565) |
| 908 | jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_565); |
| 909 | else |
| 910 | jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_422); |
| 911 | if (ctx->cap_q.fmt->fourcc == V4L2_PIX_FMT_YUYV) |
| 912 | jpeg_subsampling_mode(jpeg->regs, |
| 913 | S5P_JPEG_SUBSAMPLING_422); |
| 914 | else |
| 915 | jpeg_subsampling_mode(jpeg->regs, |
| 916 | S5P_JPEG_SUBSAMPLING_420); |
| 917 | jpeg_dri(jpeg->regs, 0); |
| 918 | jpeg_x(jpeg->regs, ctx->out_q.w); |
| 919 | jpeg_y(jpeg->regs, ctx->out_q.h); |
| 920 | jpeg_imgadr(jpeg->regs, src_addr); |
| 921 | jpeg_jpgadr(jpeg->regs, dst_addr); |
| 922 | |
| 923 | /* ultimately comes from sizeimage from userspace */ |
| 924 | jpeg_enc_stream_int(jpeg->regs, ctx->cap_q.size); |
| 925 | |
| 926 | /* JPEG RGB to YCbCr conversion matrix */ |
| 927 | jpeg_coef(jpeg->regs, 1, 1, S5P_JPEG_COEF11); |
| 928 | jpeg_coef(jpeg->regs, 1, 2, S5P_JPEG_COEF12); |
| 929 | jpeg_coef(jpeg->regs, 1, 3, S5P_JPEG_COEF13); |
| 930 | jpeg_coef(jpeg->regs, 2, 1, S5P_JPEG_COEF21); |
| 931 | jpeg_coef(jpeg->regs, 2, 2, S5P_JPEG_COEF22); |
| 932 | jpeg_coef(jpeg->regs, 2, 3, S5P_JPEG_COEF23); |
| 933 | jpeg_coef(jpeg->regs, 3, 1, S5P_JPEG_COEF31); |
| 934 | jpeg_coef(jpeg->regs, 3, 2, S5P_JPEG_COEF32); |
| 935 | jpeg_coef(jpeg->regs, 3, 3, S5P_JPEG_COEF33); |
| 936 | |
| 937 | /* |
| 938 | * JPEG IP allows storing 4 quantization tables |
| 939 | * We fill table 0 for luma and table 1 for chroma |
| 940 | */ |
| 941 | jpeg_set_qtbl_lum(jpeg->regs, ctx->compr_quality); |
| 942 | jpeg_set_qtbl_chr(jpeg->regs, ctx->compr_quality); |
| 943 | /* use table 0 for Y */ |
| 944 | jpeg_qtbl(jpeg->regs, 1, 0); |
| 945 | /* use table 1 for Cb and Cr*/ |
| 946 | jpeg_qtbl(jpeg->regs, 2, 1); |
| 947 | jpeg_qtbl(jpeg->regs, 3, 1); |
| 948 | |
| 949 | /* Y, Cb, Cr use Huffman table 0 */ |
| 950 | jpeg_htbl_ac(jpeg->regs, 1); |
| 951 | jpeg_htbl_dc(jpeg->regs, 1); |
| 952 | jpeg_htbl_ac(jpeg->regs, 2); |
| 953 | jpeg_htbl_dc(jpeg->regs, 2); |
| 954 | jpeg_htbl_ac(jpeg->regs, 3); |
| 955 | jpeg_htbl_dc(jpeg->regs, 3); |
| 956 | } else { |
| 957 | jpeg_rst_int_enable(jpeg->regs, true); |
| 958 | jpeg_data_num_int_enable(jpeg->regs, true); |
| 959 | jpeg_final_mcu_num_int_enable(jpeg->regs, true); |
| 960 | jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_422); |
| 961 | jpeg_jpgadr(jpeg->regs, src_addr); |
| 962 | jpeg_imgadr(jpeg->regs, dst_addr); |
| 963 | } |
| 964 | jpeg_start(jpeg->regs); |
| 965 | } |
| 966 | |
| 967 | static int s5p_jpeg_job_ready(void *priv) |
| 968 | { |
| 969 | struct s5p_jpeg_ctx *ctx = priv; |
| 970 | |
| 971 | if (ctx->mode == S5P_JPEG_DECODE) |
| 972 | return ctx->hdr_parsed; |
| 973 | return 1; |
| 974 | } |
| 975 | |
| 976 | static void s5p_jpeg_job_abort(void *priv) |
| 977 | { |
| 978 | } |
| 979 | |
| 980 | static struct v4l2_m2m_ops s5p_jpeg_m2m_ops = { |
| 981 | .device_run = s5p_jpeg_device_run, |
| 982 | .job_ready = s5p_jpeg_job_ready, |
| 983 | .job_abort = s5p_jpeg_job_abort, |
| 984 | }; |
| 985 | |
| 986 | /* |
| 987 | * ============================================================================ |
| 988 | * Queue operations |
| 989 | * ============================================================================ |
| 990 | */ |
| 991 | |
Marek Szyprowski | 719c174 | 2012-01-13 05:12:38 -0300 | [diff] [blame^] | 992 | static int s5p_jpeg_queue_setup(struct vb2_queue *vq, |
| 993 | const struct v4l2_format *fmt, |
| 994 | unsigned int *nbuffers, unsigned int *nplanes, |
| 995 | unsigned int sizes[], void *alloc_ctxs[]) |
Andrzej Pietrasiewicz | bb677f3 | 2011-11-24 11:15:23 -0300 | [diff] [blame] | 996 | { |
| 997 | struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq); |
| 998 | struct s5p_jpeg_q_data *q_data = NULL; |
| 999 | unsigned int size, count = *nbuffers; |
| 1000 | |
| 1001 | q_data = get_q_data(ctx, vq->type); |
| 1002 | BUG_ON(q_data == NULL); |
| 1003 | |
| 1004 | size = q_data->size; |
| 1005 | |
| 1006 | /* |
| 1007 | * header is parsed during decoding and parsed information stored |
| 1008 | * in the context so we do not allow another buffer to overwrite it |
| 1009 | */ |
| 1010 | if (ctx->mode == S5P_JPEG_DECODE) |
| 1011 | count = 1; |
| 1012 | |
| 1013 | *nbuffers = count; |
| 1014 | *nplanes = 1; |
| 1015 | sizes[0] = size; |
| 1016 | alloc_ctxs[0] = ctx->jpeg->alloc_ctx; |
| 1017 | |
| 1018 | return 0; |
| 1019 | } |
| 1020 | |
| 1021 | static int s5p_jpeg_buf_prepare(struct vb2_buffer *vb) |
| 1022 | { |
| 1023 | struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| 1024 | struct s5p_jpeg_q_data *q_data = NULL; |
| 1025 | |
| 1026 | q_data = get_q_data(ctx, vb->vb2_queue->type); |
| 1027 | BUG_ON(q_data == NULL); |
| 1028 | |
| 1029 | if (vb2_plane_size(vb, 0) < q_data->size) { |
| 1030 | pr_err("%s data will not fit into plane (%lu < %lu)\n", |
| 1031 | __func__, vb2_plane_size(vb, 0), |
| 1032 | (long)q_data->size); |
| 1033 | return -EINVAL; |
| 1034 | } |
| 1035 | |
| 1036 | vb2_set_plane_payload(vb, 0, q_data->size); |
| 1037 | |
| 1038 | return 0; |
| 1039 | } |
| 1040 | |
| 1041 | static void s5p_jpeg_buf_queue(struct vb2_buffer *vb) |
| 1042 | { |
| 1043 | struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| 1044 | |
| 1045 | if (ctx->mode == S5P_JPEG_DECODE && |
| 1046 | vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { |
| 1047 | struct s5p_jpeg_q_data tmp, *q_data; |
| 1048 | ctx->hdr_parsed = s5p_jpeg_parse_hdr(&tmp, |
| 1049 | (unsigned long)vb2_plane_vaddr(vb, 0), |
| 1050 | min((unsigned long)ctx->out_q.size, |
| 1051 | vb2_get_plane_payload(vb, 0))); |
| 1052 | if (!ctx->hdr_parsed) { |
| 1053 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
| 1054 | return; |
| 1055 | } |
| 1056 | |
| 1057 | q_data = &ctx->out_q; |
| 1058 | q_data->w = tmp.w; |
| 1059 | q_data->h = tmp.h; |
| 1060 | |
| 1061 | q_data = &ctx->cap_q; |
| 1062 | q_data->w = tmp.w; |
| 1063 | q_data->h = tmp.h; |
| 1064 | |
| 1065 | jpeg_bound_align_image(&q_data->w, S5P_JPEG_MIN_WIDTH, |
| 1066 | S5P_JPEG_MAX_WIDTH, q_data->fmt->h_align, |
| 1067 | &q_data->h, S5P_JPEG_MIN_HEIGHT, |
| 1068 | S5P_JPEG_MAX_HEIGHT, q_data->fmt->v_align |
| 1069 | ); |
| 1070 | q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3; |
| 1071 | } |
| 1072 | if (ctx->m2m_ctx) |
| 1073 | v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); |
| 1074 | } |
| 1075 | |
| 1076 | static void s5p_jpeg_wait_prepare(struct vb2_queue *vq) |
| 1077 | { |
| 1078 | struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq); |
| 1079 | |
| 1080 | mutex_unlock(&ctx->jpeg->lock); |
| 1081 | } |
| 1082 | |
| 1083 | static void s5p_jpeg_wait_finish(struct vb2_queue *vq) |
| 1084 | { |
| 1085 | struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq); |
| 1086 | |
| 1087 | mutex_lock(&ctx->jpeg->lock); |
| 1088 | } |
| 1089 | |
| 1090 | static int s5p_jpeg_start_streaming(struct vb2_queue *q, unsigned int count) |
| 1091 | { |
| 1092 | struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q); |
| 1093 | int ret; |
| 1094 | |
| 1095 | ret = pm_runtime_get_sync(ctx->jpeg->dev); |
| 1096 | |
| 1097 | return ret > 0 ? 0 : ret; |
| 1098 | } |
| 1099 | |
| 1100 | static int s5p_jpeg_stop_streaming(struct vb2_queue *q) |
| 1101 | { |
| 1102 | struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(q); |
| 1103 | |
| 1104 | pm_runtime_put(ctx->jpeg->dev); |
| 1105 | |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | static struct vb2_ops s5p_jpeg_qops = { |
| 1110 | .queue_setup = s5p_jpeg_queue_setup, |
| 1111 | .buf_prepare = s5p_jpeg_buf_prepare, |
| 1112 | .buf_queue = s5p_jpeg_buf_queue, |
| 1113 | .wait_prepare = s5p_jpeg_wait_prepare, |
| 1114 | .wait_finish = s5p_jpeg_wait_finish, |
| 1115 | .start_streaming = s5p_jpeg_start_streaming, |
| 1116 | .stop_streaming = s5p_jpeg_stop_streaming, |
| 1117 | }; |
| 1118 | |
| 1119 | static int queue_init(void *priv, struct vb2_queue *src_vq, |
| 1120 | struct vb2_queue *dst_vq) |
| 1121 | { |
| 1122 | struct s5p_jpeg_ctx *ctx = priv; |
| 1123 | int ret; |
| 1124 | |
| 1125 | memset(src_vq, 0, sizeof(*src_vq)); |
| 1126 | src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| 1127 | src_vq->io_modes = VB2_MMAP | VB2_USERPTR; |
| 1128 | src_vq->drv_priv = ctx; |
| 1129 | src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); |
| 1130 | src_vq->ops = &s5p_jpeg_qops; |
| 1131 | src_vq->mem_ops = &vb2_dma_contig_memops; |
| 1132 | |
| 1133 | ret = vb2_queue_init(src_vq); |
| 1134 | if (ret) |
| 1135 | return ret; |
| 1136 | |
| 1137 | memset(dst_vq, 0, sizeof(*dst_vq)); |
| 1138 | dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1139 | dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; |
| 1140 | dst_vq->drv_priv = ctx; |
| 1141 | dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); |
| 1142 | dst_vq->ops = &s5p_jpeg_qops; |
| 1143 | dst_vq->mem_ops = &vb2_dma_contig_memops; |
| 1144 | |
| 1145 | return vb2_queue_init(dst_vq); |
| 1146 | } |
| 1147 | |
| 1148 | /* |
| 1149 | * ============================================================================ |
| 1150 | * ISR |
| 1151 | * ============================================================================ |
| 1152 | */ |
| 1153 | |
| 1154 | static irqreturn_t s5p_jpeg_irq(int irq, void *dev_id) |
| 1155 | { |
| 1156 | struct s5p_jpeg *jpeg = dev_id; |
| 1157 | struct s5p_jpeg_ctx *curr_ctx; |
| 1158 | struct vb2_buffer *src_buf, *dst_buf; |
| 1159 | unsigned long payload_size = 0; |
| 1160 | enum vb2_buffer_state state = VB2_BUF_STATE_DONE; |
| 1161 | bool enc_jpeg_too_large = false; |
| 1162 | bool timer_elapsed = false; |
| 1163 | bool op_completed = false; |
| 1164 | |
| 1165 | curr_ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev); |
| 1166 | |
| 1167 | src_buf = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx); |
| 1168 | dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx); |
| 1169 | |
| 1170 | if (curr_ctx->mode == S5P_JPEG_ENCODE) |
| 1171 | enc_jpeg_too_large = jpeg_enc_stream_stat(jpeg->regs); |
| 1172 | timer_elapsed = jpeg_timer_stat(jpeg->regs); |
| 1173 | op_completed = jpeg_result_stat_ok(jpeg->regs); |
| 1174 | if (curr_ctx->mode == S5P_JPEG_DECODE) |
| 1175 | op_completed = op_completed && jpeg_stream_stat_ok(jpeg->regs); |
| 1176 | |
| 1177 | if (enc_jpeg_too_large) { |
| 1178 | state = VB2_BUF_STATE_ERROR; |
| 1179 | jpeg_clear_enc_stream_stat(jpeg->regs); |
| 1180 | } else if (timer_elapsed) { |
| 1181 | state = VB2_BUF_STATE_ERROR; |
| 1182 | jpeg_clear_timer_stat(jpeg->regs); |
| 1183 | } else if (!op_completed) { |
| 1184 | state = VB2_BUF_STATE_ERROR; |
| 1185 | } else { |
| 1186 | payload_size = jpeg_compressed_size(jpeg->regs); |
| 1187 | } |
| 1188 | |
| 1189 | v4l2_m2m_buf_done(src_buf, state); |
| 1190 | if (curr_ctx->mode == S5P_JPEG_ENCODE) |
| 1191 | vb2_set_plane_payload(dst_buf, 0, payload_size); |
| 1192 | v4l2_m2m_buf_done(dst_buf, state); |
| 1193 | v4l2_m2m_job_finish(jpeg->m2m_dev, curr_ctx->m2m_ctx); |
| 1194 | |
| 1195 | jpeg_clear_int(jpeg->regs); |
| 1196 | |
| 1197 | return IRQ_HANDLED; |
| 1198 | } |
| 1199 | |
| 1200 | /* |
| 1201 | * ============================================================================ |
| 1202 | * Driver basic infrastructure |
| 1203 | * ============================================================================ |
| 1204 | */ |
| 1205 | |
| 1206 | static int s5p_jpeg_probe(struct platform_device *pdev) |
| 1207 | { |
| 1208 | struct s5p_jpeg *jpeg; |
| 1209 | struct resource *res; |
| 1210 | int ret; |
| 1211 | |
| 1212 | /* JPEG IP abstraction struct */ |
| 1213 | jpeg = kzalloc(sizeof(struct s5p_jpeg), GFP_KERNEL); |
| 1214 | if (!jpeg) |
| 1215 | return -ENOMEM; |
| 1216 | |
| 1217 | mutex_init(&jpeg->lock); |
| 1218 | jpeg->dev = &pdev->dev; |
| 1219 | |
| 1220 | /* memory-mapped registers */ |
| 1221 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1222 | if (!res) { |
| 1223 | dev_err(&pdev->dev, "cannot find IO resource\n"); |
| 1224 | ret = -ENOENT; |
| 1225 | goto jpeg_alloc_rollback; |
| 1226 | } |
| 1227 | |
| 1228 | jpeg->ioarea = request_mem_region(res->start, resource_size(res), |
| 1229 | pdev->name); |
| 1230 | if (!jpeg->ioarea) { |
| 1231 | dev_err(&pdev->dev, "cannot request IO\n"); |
| 1232 | ret = -ENXIO; |
| 1233 | goto jpeg_alloc_rollback; |
| 1234 | } |
| 1235 | |
| 1236 | jpeg->regs = ioremap(res->start, resource_size(res)); |
| 1237 | if (!jpeg->regs) { |
| 1238 | dev_err(&pdev->dev, "cannot map IO\n"); |
| 1239 | ret = -ENXIO; |
| 1240 | goto mem_region_rollback; |
| 1241 | } |
| 1242 | |
| 1243 | dev_dbg(&pdev->dev, "registers %p (%p, %p)\n", |
| 1244 | jpeg->regs, jpeg->ioarea, res); |
| 1245 | |
| 1246 | /* interrupt service routine registration */ |
| 1247 | jpeg->irq = ret = platform_get_irq(pdev, 0); |
| 1248 | if (ret < 0) { |
| 1249 | dev_err(&pdev->dev, "cannot find IRQ\n"); |
| 1250 | goto ioremap_rollback; |
| 1251 | } |
| 1252 | |
| 1253 | ret = request_irq(jpeg->irq, s5p_jpeg_irq, 0, |
| 1254 | dev_name(&pdev->dev), jpeg); |
| 1255 | |
| 1256 | if (ret) { |
| 1257 | dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpeg->irq); |
| 1258 | goto ioremap_rollback; |
| 1259 | } |
| 1260 | |
| 1261 | /* clocks */ |
| 1262 | jpeg->clk = clk_get(&pdev->dev, "jpeg"); |
| 1263 | if (IS_ERR(jpeg->clk)) { |
| 1264 | dev_err(&pdev->dev, "cannot get clock\n"); |
| 1265 | ret = PTR_ERR(jpeg->clk); |
| 1266 | goto request_irq_rollback; |
| 1267 | } |
| 1268 | dev_dbg(&pdev->dev, "clock source %p\n", jpeg->clk); |
| 1269 | clk_enable(jpeg->clk); |
| 1270 | |
| 1271 | /* v4l2 device */ |
| 1272 | ret = v4l2_device_register(&pdev->dev, &jpeg->v4l2_dev); |
| 1273 | if (ret) { |
| 1274 | dev_err(&pdev->dev, "Failed to register v4l2 device\n"); |
| 1275 | goto clk_get_rollback; |
| 1276 | } |
| 1277 | |
| 1278 | /* mem2mem device */ |
| 1279 | jpeg->m2m_dev = v4l2_m2m_init(&s5p_jpeg_m2m_ops); |
| 1280 | if (IS_ERR(jpeg->m2m_dev)) { |
| 1281 | v4l2_err(&jpeg->v4l2_dev, "Failed to init mem2mem device\n"); |
| 1282 | ret = PTR_ERR(jpeg->m2m_dev); |
| 1283 | goto device_register_rollback; |
| 1284 | } |
| 1285 | |
| 1286 | jpeg->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 1287 | if (IS_ERR(jpeg->alloc_ctx)) { |
| 1288 | v4l2_err(&jpeg->v4l2_dev, "Failed to init memory allocator\n"); |
| 1289 | ret = PTR_ERR(jpeg->alloc_ctx); |
| 1290 | goto m2m_init_rollback; |
| 1291 | } |
| 1292 | |
| 1293 | /* JPEG encoder /dev/videoX node */ |
| 1294 | jpeg->vfd_encoder = video_device_alloc(); |
| 1295 | if (!jpeg->vfd_encoder) { |
| 1296 | v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n"); |
| 1297 | ret = -ENOMEM; |
| 1298 | goto vb2_allocator_rollback; |
| 1299 | } |
| 1300 | strlcpy(jpeg->vfd_encoder->name, S5P_JPEG_M2M_NAME, |
| 1301 | sizeof(jpeg->vfd_encoder->name)); |
| 1302 | jpeg->vfd_encoder->fops = &s5p_jpeg_fops; |
| 1303 | jpeg->vfd_encoder->ioctl_ops = &s5p_jpeg_ioctl_ops; |
| 1304 | jpeg->vfd_encoder->minor = -1; |
| 1305 | jpeg->vfd_encoder->release = video_device_release; |
| 1306 | jpeg->vfd_encoder->lock = &jpeg->lock; |
| 1307 | jpeg->vfd_encoder->v4l2_dev = &jpeg->v4l2_dev; |
| 1308 | |
| 1309 | ret = video_register_device(jpeg->vfd_encoder, VFL_TYPE_GRABBER, -1); |
| 1310 | if (ret) { |
| 1311 | v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n"); |
| 1312 | goto enc_vdev_alloc_rollback; |
| 1313 | } |
| 1314 | |
| 1315 | video_set_drvdata(jpeg->vfd_encoder, jpeg); |
| 1316 | v4l2_info(&jpeg->v4l2_dev, |
| 1317 | "encoder device registered as /dev/video%d\n", |
| 1318 | jpeg->vfd_encoder->num); |
| 1319 | |
| 1320 | /* JPEG decoder /dev/videoX node */ |
| 1321 | jpeg->vfd_decoder = video_device_alloc(); |
| 1322 | if (!jpeg->vfd_decoder) { |
| 1323 | v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n"); |
| 1324 | ret = -ENOMEM; |
| 1325 | goto enc_vdev_register_rollback; |
| 1326 | } |
| 1327 | strlcpy(jpeg->vfd_decoder->name, S5P_JPEG_M2M_NAME, |
| 1328 | sizeof(jpeg->vfd_decoder->name)); |
| 1329 | jpeg->vfd_decoder->fops = &s5p_jpeg_fops; |
| 1330 | jpeg->vfd_decoder->ioctl_ops = &s5p_jpeg_ioctl_ops; |
| 1331 | jpeg->vfd_decoder->minor = -1; |
| 1332 | jpeg->vfd_decoder->release = video_device_release; |
| 1333 | jpeg->vfd_decoder->lock = &jpeg->lock; |
| 1334 | jpeg->vfd_decoder->v4l2_dev = &jpeg->v4l2_dev; |
| 1335 | |
| 1336 | ret = video_register_device(jpeg->vfd_decoder, VFL_TYPE_GRABBER, -1); |
| 1337 | if (ret) { |
| 1338 | v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n"); |
| 1339 | goto dec_vdev_alloc_rollback; |
| 1340 | } |
| 1341 | |
| 1342 | video_set_drvdata(jpeg->vfd_decoder, jpeg); |
| 1343 | v4l2_info(&jpeg->v4l2_dev, |
| 1344 | "decoder device registered as /dev/video%d\n", |
| 1345 | jpeg->vfd_decoder->num); |
| 1346 | |
| 1347 | /* final statements & power management */ |
| 1348 | platform_set_drvdata(pdev, jpeg); |
| 1349 | |
| 1350 | pm_runtime_enable(&pdev->dev); |
| 1351 | |
| 1352 | v4l2_info(&jpeg->v4l2_dev, "Samsung S5P JPEG codec\n"); |
| 1353 | |
| 1354 | return 0; |
| 1355 | |
| 1356 | dec_vdev_alloc_rollback: |
| 1357 | video_device_release(jpeg->vfd_decoder); |
| 1358 | |
| 1359 | enc_vdev_register_rollback: |
| 1360 | video_unregister_device(jpeg->vfd_encoder); |
| 1361 | |
| 1362 | enc_vdev_alloc_rollback: |
| 1363 | video_device_release(jpeg->vfd_encoder); |
| 1364 | |
| 1365 | vb2_allocator_rollback: |
| 1366 | vb2_dma_contig_cleanup_ctx(jpeg->alloc_ctx); |
| 1367 | |
| 1368 | m2m_init_rollback: |
| 1369 | v4l2_m2m_release(jpeg->m2m_dev); |
| 1370 | |
| 1371 | device_register_rollback: |
| 1372 | v4l2_device_unregister(&jpeg->v4l2_dev); |
| 1373 | |
| 1374 | clk_get_rollback: |
| 1375 | clk_disable(jpeg->clk); |
| 1376 | clk_put(jpeg->clk); |
| 1377 | |
| 1378 | request_irq_rollback: |
| 1379 | free_irq(jpeg->irq, jpeg); |
| 1380 | |
| 1381 | ioremap_rollback: |
| 1382 | iounmap(jpeg->regs); |
| 1383 | |
| 1384 | mem_region_rollback: |
| 1385 | release_resource(jpeg->ioarea); |
| 1386 | release_mem_region(jpeg->ioarea->start, resource_size(jpeg->ioarea)); |
| 1387 | |
| 1388 | jpeg_alloc_rollback: |
| 1389 | kfree(jpeg); |
| 1390 | return ret; |
| 1391 | } |
| 1392 | |
| 1393 | static int s5p_jpeg_remove(struct platform_device *pdev) |
| 1394 | { |
| 1395 | struct s5p_jpeg *jpeg = platform_get_drvdata(pdev); |
| 1396 | |
| 1397 | pm_runtime_disable(jpeg->dev); |
| 1398 | |
| 1399 | video_unregister_device(jpeg->vfd_decoder); |
| 1400 | video_device_release(jpeg->vfd_decoder); |
| 1401 | video_unregister_device(jpeg->vfd_encoder); |
| 1402 | video_device_release(jpeg->vfd_encoder); |
| 1403 | vb2_dma_contig_cleanup_ctx(jpeg->alloc_ctx); |
| 1404 | v4l2_m2m_release(jpeg->m2m_dev); |
| 1405 | v4l2_device_unregister(&jpeg->v4l2_dev); |
| 1406 | |
| 1407 | clk_disable(jpeg->clk); |
| 1408 | clk_put(jpeg->clk); |
| 1409 | |
| 1410 | free_irq(jpeg->irq, jpeg); |
| 1411 | |
| 1412 | iounmap(jpeg->regs); |
| 1413 | |
| 1414 | release_resource(jpeg->ioarea); |
| 1415 | release_mem_region(jpeg->ioarea->start, resource_size(jpeg->ioarea)); |
| 1416 | kfree(jpeg); |
| 1417 | |
| 1418 | return 0; |
| 1419 | } |
| 1420 | |
| 1421 | static int s5p_jpeg_runtime_suspend(struct device *dev) |
| 1422 | { |
| 1423 | return 0; |
| 1424 | } |
| 1425 | |
| 1426 | static int s5p_jpeg_runtime_resume(struct device *dev) |
| 1427 | { |
| 1428 | struct s5p_jpeg *jpeg = dev_get_drvdata(dev); |
| 1429 | /* |
| 1430 | * JPEG IP allows storing two Huffman tables for each component |
| 1431 | * We fill table 0 for each component |
| 1432 | */ |
| 1433 | jpeg_set_hdctbl(jpeg->regs); |
| 1434 | jpeg_set_hdctblg(jpeg->regs); |
| 1435 | jpeg_set_hactbl(jpeg->regs); |
| 1436 | jpeg_set_hactblg(jpeg->regs); |
| 1437 | return 0; |
| 1438 | } |
| 1439 | |
| 1440 | static const struct dev_pm_ops s5p_jpeg_pm_ops = { |
| 1441 | .runtime_suspend = s5p_jpeg_runtime_suspend, |
| 1442 | .runtime_resume = s5p_jpeg_runtime_resume, |
| 1443 | }; |
| 1444 | |
| 1445 | static struct platform_driver s5p_jpeg_driver = { |
| 1446 | .probe = s5p_jpeg_probe, |
| 1447 | .remove = s5p_jpeg_remove, |
| 1448 | .driver = { |
| 1449 | .owner = THIS_MODULE, |
| 1450 | .name = S5P_JPEG_M2M_NAME, |
| 1451 | .pm = &s5p_jpeg_pm_ops, |
| 1452 | }, |
| 1453 | }; |
| 1454 | |
| 1455 | static int __init |
| 1456 | s5p_jpeg_register(void) |
| 1457 | { |
| 1458 | int ret; |
| 1459 | |
| 1460 | pr_info("S5P JPEG V4L2 Driver, (c) 2011 Samsung Electronics\n"); |
| 1461 | |
| 1462 | ret = platform_driver_register(&s5p_jpeg_driver); |
| 1463 | |
| 1464 | if (ret) |
| 1465 | pr_err("%s: failed to register jpeg driver\n", __func__); |
| 1466 | |
| 1467 | return ret; |
| 1468 | } |
| 1469 | |
| 1470 | static void __exit |
| 1471 | s5p_jpeg_unregister(void) |
| 1472 | { |
| 1473 | platform_driver_unregister(&s5p_jpeg_driver); |
| 1474 | } |
| 1475 | |
| 1476 | module_init(s5p_jpeg_register); |
| 1477 | module_exit(s5p_jpeg_unregister); |
| 1478 | |
| 1479 | MODULE_AUTHOR("Andrzej Pietrasiewicz <andrzej.p@samsung.com>"); |
| 1480 | MODULE_DESCRIPTION("Samsung JPEG codec driver"); |
| 1481 | MODULE_LICENSE("GPL"); |
| 1482 | |