Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005-2006 Micronas USA Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License (Version 2) as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software Foundation, |
| 15 | * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/module.h> |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 19 | #include <linux/init.h> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/sched.h> |
| 22 | #include <linux/spinlock.h> |
| 23 | #include <linux/unistd.h> |
| 24 | #include <linux/time.h> |
| 25 | #include <linux/mm.h> |
| 26 | #include <linux/vmalloc.h> |
| 27 | #include <linux/device.h> |
| 28 | #include <linux/i2c.h> |
| 29 | #include <linux/firmware.h> |
| 30 | #include <linux/semaphore.h> |
| 31 | #include <linux/uaccess.h> |
| 32 | #include <asm/system.h> |
Ross Cohen | df20d69 | 2008-09-29 22:36:24 -0400 | [diff] [blame] | 33 | #include <linux/videodev2.h> |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 34 | #include <media/tuner.h> |
| 35 | #include <media/v4l2-common.h> |
| 36 | |
| 37 | #include "go7007-priv.h" |
| 38 | #include "wis-i2c.h" |
| 39 | |
| 40 | /* |
| 41 | * Wait for an interrupt to be delivered from the GO7007SB and return |
| 42 | * the associated value and data. |
| 43 | * |
| 44 | * Must be called with the hw_lock held. |
| 45 | */ |
| 46 | int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data) |
| 47 | { |
| 48 | go->interrupt_available = 0; |
| 49 | go->hpi_ops->read_interrupt(go); |
| 50 | if (wait_event_timeout(go->interrupt_waitq, |
| 51 | go->interrupt_available, 5*HZ) < 0) { |
| 52 | printk(KERN_ERR "go7007: timeout waiting for read interrupt\n"); |
| 53 | return -1; |
| 54 | } |
| 55 | if (!go->interrupt_available) |
| 56 | return -1; |
| 57 | go->interrupt_available = 0; |
| 58 | *value = go->interrupt_value & 0xfffe; |
| 59 | *data = go->interrupt_data; |
| 60 | return 0; |
| 61 | } |
| 62 | EXPORT_SYMBOL(go7007_read_interrupt); |
| 63 | |
| 64 | /* |
| 65 | * Read a register/address on the GO7007SB. |
| 66 | * |
| 67 | * Must be called with the hw_lock held. |
| 68 | */ |
| 69 | int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data) |
| 70 | { |
| 71 | int count = 100; |
| 72 | u16 value; |
| 73 | |
| 74 | if (go7007_write_interrupt(go, 0x0010, addr) < 0) |
| 75 | return -EIO; |
| 76 | while (count-- > 0) { |
| 77 | if (go7007_read_interrupt(go, &value, data) == 0 && |
| 78 | value == 0xa000) |
| 79 | return 0; |
| 80 | } |
| 81 | return -EIO; |
| 82 | } |
| 83 | EXPORT_SYMBOL(go7007_read_addr); |
| 84 | |
| 85 | /* |
| 86 | * Send the boot firmware to the encoder, which just wakes it up and lets |
| 87 | * us talk to the GPIO pins and on-board I2C adapter. |
| 88 | * |
| 89 | * Must be called with the hw_lock held. |
| 90 | */ |
| 91 | static int go7007_load_encoder(struct go7007 *go) |
| 92 | { |
| 93 | const struct firmware *fw_entry; |
| 94 | char fw_name[] = "go7007fw.bin"; |
| 95 | void *bounce; |
| 96 | int fw_len, rv = 0; |
| 97 | u16 intr_val, intr_data; |
| 98 | |
| 99 | if (request_firmware(&fw_entry, fw_name, go->dev)) { |
| 100 | printk(KERN_ERR |
| 101 | "go7007: unable to load firmware from file \"%s\"\n", |
| 102 | fw_name); |
| 103 | return -1; |
| 104 | } |
| 105 | if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) { |
| 106 | printk(KERN_ERR "go7007: file \"%s\" does not appear to be " |
| 107 | "go7007 firmware\n", fw_name); |
| 108 | release_firmware(fw_entry); |
| 109 | return -1; |
| 110 | } |
| 111 | fw_len = fw_entry->size - 16; |
| 112 | bounce = kmalloc(fw_len, GFP_KERNEL); |
| 113 | if (bounce == NULL) { |
| 114 | printk(KERN_ERR "go7007: unable to allocate %d bytes for " |
| 115 | "firmware transfer\n", fw_len); |
| 116 | release_firmware(fw_entry); |
| 117 | return -1; |
| 118 | } |
| 119 | memcpy(bounce, fw_entry->data + 16, fw_len); |
| 120 | release_firmware(fw_entry); |
| 121 | if (go7007_interface_reset(go) < 0 || |
| 122 | go7007_send_firmware(go, bounce, fw_len) < 0 || |
| 123 | go7007_read_interrupt(go, &intr_val, &intr_data) < 0 || |
| 124 | (intr_val & ~0x1) != 0x5a5a) { |
| 125 | printk(KERN_ERR "go7007: error transferring firmware\n"); |
| 126 | rv = -1; |
| 127 | } |
| 128 | kfree(bounce); |
| 129 | return rv; |
| 130 | } |
| 131 | |
| 132 | /* |
| 133 | * Boot the encoder and register the I2C adapter if requested. Do the |
| 134 | * minimum initialization necessary, since the board-specific code may |
| 135 | * still need to probe the board ID. |
| 136 | * |
| 137 | * Must NOT be called with the hw_lock held. |
| 138 | */ |
| 139 | int go7007_boot_encoder(struct go7007 *go, int init_i2c) |
| 140 | { |
| 141 | int ret; |
| 142 | |
| 143 | down(&go->hw_lock); |
| 144 | ret = go7007_load_encoder(go); |
| 145 | up(&go->hw_lock); |
| 146 | if (ret < 0) |
| 147 | return -1; |
| 148 | if (!init_i2c) |
| 149 | return 0; |
| 150 | if (go7007_i2c_init(go) < 0) |
| 151 | return -1; |
| 152 | go->i2c_adapter_online = 1; |
| 153 | return 0; |
| 154 | } |
| 155 | EXPORT_SYMBOL(go7007_boot_encoder); |
| 156 | |
| 157 | /* |
| 158 | * Configure any hardware-related registers in the GO7007, such as GPIO |
| 159 | * pins and bus parameters, which are board-specific. This assumes |
| 160 | * the boot firmware has already been downloaded. |
| 161 | * |
| 162 | * Must be called with the hw_lock held. |
| 163 | */ |
| 164 | static int go7007_init_encoder(struct go7007 *go) |
| 165 | { |
| 166 | if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) { |
| 167 | go7007_write_addr(go, 0x1000, 0x0811); |
| 168 | go7007_write_addr(go, 0x1000, 0x0c11); |
| 169 | } |
| 170 | if (go->board_id == GO7007_BOARDID_MATRIX_REV) { |
| 171 | /* Set GPIO pin 0 to be an output (audio clock control) */ |
| 172 | go7007_write_addr(go, 0x3c82, 0x0001); |
| 173 | go7007_write_addr(go, 0x3c80, 0x00fe); |
| 174 | } |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | /* |
| 179 | * Send the boot firmware to the GO7007 and configure the registers. This |
| 180 | * is the only way to stop the encoder once it has started streaming video. |
| 181 | * |
| 182 | * Must be called with the hw_lock held. |
| 183 | */ |
| 184 | int go7007_reset_encoder(struct go7007 *go) |
| 185 | { |
| 186 | if (go7007_load_encoder(go) < 0) |
| 187 | return -1; |
| 188 | return go7007_init_encoder(go); |
| 189 | } |
| 190 | |
| 191 | /* |
| 192 | * Attempt to instantiate an I2C client by ID, probably loading a module. |
| 193 | */ |
Jean Delvare | 7400516 | 2009-04-21 21:47:22 +0200 | [diff] [blame] | 194 | static int init_i2c_module(struct i2c_adapter *adapter, const char *type, |
| 195 | int id, int addr) |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 196 | { |
Jean Delvare | 7400516 | 2009-04-21 21:47:22 +0200 | [diff] [blame] | 197 | struct i2c_board_info info; |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 198 | char *modname; |
| 199 | |
| 200 | switch (id) { |
| 201 | case I2C_DRIVERID_WIS_SAA7115: |
| 202 | modname = "wis-saa7115"; |
| 203 | break; |
| 204 | case I2C_DRIVERID_WIS_SAA7113: |
| 205 | modname = "wis-saa7113"; |
| 206 | break; |
| 207 | case I2C_DRIVERID_WIS_UDA1342: |
| 208 | modname = "wis-uda1342"; |
| 209 | break; |
| 210 | case I2C_DRIVERID_WIS_SONY_TUNER: |
| 211 | modname = "wis-sony-tuner"; |
| 212 | break; |
| 213 | case I2C_DRIVERID_WIS_TW9903: |
| 214 | modname = "wis-tw9903"; |
| 215 | break; |
| 216 | case I2C_DRIVERID_WIS_TW2804: |
| 217 | modname = "wis-tw2804"; |
| 218 | break; |
| 219 | case I2C_DRIVERID_WIS_OV7640: |
| 220 | modname = "wis-ov7640"; |
| 221 | break; |
Pete Eberlein | b11869d | 2008-10-30 12:56:41 -0700 | [diff] [blame] | 222 | case I2C_DRIVERID_S2250: |
| 223 | modname = "s2250-board"; |
| 224 | break; |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 225 | default: |
| 226 | modname = NULL; |
| 227 | break; |
| 228 | } |
| 229 | if (modname != NULL) |
| 230 | request_module(modname); |
Jean Delvare | 7400516 | 2009-04-21 21:47:22 +0200 | [diff] [blame] | 231 | |
| 232 | memset(&info, 0, sizeof(struct i2c_board_info)); |
| 233 | info.addr = addr; |
| 234 | strlcpy(info.type, type, I2C_NAME_SIZE); |
| 235 | if (!i2c_new_device(adapter, &info)) |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 236 | return 0; |
| 237 | if (modname != NULL) |
| 238 | printk(KERN_INFO |
Pete Eberlein | d73f822 | 2008-10-30 12:56:33 -0700 | [diff] [blame] | 239 | "go7007: probing for module %s failed\n", modname); |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 240 | else |
| 241 | printk(KERN_INFO |
| 242 | "go7007: sensor %u seems to be unsupported!\n", id); |
| 243 | return -1; |
| 244 | } |
| 245 | |
| 246 | /* |
| 247 | * Finalize the GO7007 hardware setup, register the on-board I2C adapter |
| 248 | * (if used on this board), load the I2C client driver for the sensor |
| 249 | * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2 |
| 250 | * interfaces. |
| 251 | * |
| 252 | * Must NOT be called with the hw_lock held. |
| 253 | */ |
| 254 | int go7007_register_encoder(struct go7007 *go) |
| 255 | { |
| 256 | int i, ret; |
| 257 | |
| 258 | printk(KERN_INFO "go7007: registering new %s\n", go->name); |
| 259 | |
| 260 | down(&go->hw_lock); |
| 261 | ret = go7007_init_encoder(go); |
| 262 | up(&go->hw_lock); |
| 263 | if (ret < 0) |
| 264 | return -1; |
| 265 | |
| 266 | if (!go->i2c_adapter_online && |
| 267 | go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) { |
| 268 | if (go7007_i2c_init(go) < 0) |
| 269 | return -1; |
| 270 | go->i2c_adapter_online = 1; |
| 271 | } |
| 272 | if (go->i2c_adapter_online) { |
| 273 | for (i = 0; i < go->board_info->num_i2c_devs; ++i) |
| 274 | init_i2c_module(&go->i2c_adapter, |
Jean Delvare | 7400516 | 2009-04-21 21:47:22 +0200 | [diff] [blame] | 275 | go->board_info->i2c_devs[i].type, |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 276 | go->board_info->i2c_devs[i].id, |
| 277 | go->board_info->i2c_devs[i].addr); |
Greg Kroah-Hartman | 866b869 | 2008-02-15 16:53:09 -0800 | [diff] [blame] | 278 | if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) |
| 279 | i2c_clients_command(&go->i2c_adapter, |
| 280 | DECODER_SET_CHANNEL, &go->channel_number); |
| 281 | } |
| 282 | if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) { |
| 283 | go->audio_enabled = 1; |
| 284 | go7007_snd_init(go); |
| 285 | } |
| 286 | return go7007_v4l2_init(go); |
| 287 | } |
| 288 | EXPORT_SYMBOL(go7007_register_encoder); |
| 289 | |
| 290 | /* |
| 291 | * Send the encode firmware to the encoder, which will cause it |
| 292 | * to immediately start delivering the video and audio streams. |
| 293 | * |
| 294 | * Must be called with the hw_lock held. |
| 295 | */ |
| 296 | int go7007_start_encoder(struct go7007 *go) |
| 297 | { |
| 298 | u8 *fw; |
| 299 | int fw_len, rv = 0, i; |
| 300 | u16 intr_val, intr_data; |
| 301 | |
| 302 | go->modet_enable = 0; |
| 303 | if (!go->dvd_mode) |
| 304 | for (i = 0; i < 4; ++i) { |
| 305 | if (go->modet[i].enable) { |
| 306 | go->modet_enable = 1; |
| 307 | continue; |
| 308 | } |
| 309 | go->modet[i].pixel_threshold = 32767; |
| 310 | go->modet[i].motion_threshold = 32767; |
| 311 | go->modet[i].mb_threshold = 32767; |
| 312 | } |
| 313 | |
| 314 | if (go7007_construct_fw_image(go, &fw, &fw_len) < 0) |
| 315 | return -1; |
| 316 | |
| 317 | if (go7007_send_firmware(go, fw, fw_len) < 0 || |
| 318 | go7007_read_interrupt(go, &intr_val, &intr_data) < 0) { |
| 319 | printk(KERN_ERR "go7007: error transferring firmware\n"); |
| 320 | rv = -1; |
| 321 | goto start_error; |
| 322 | } |
| 323 | |
| 324 | go->state = STATE_DATA; |
| 325 | go->parse_length = 0; |
| 326 | go->seen_frame = 0; |
| 327 | if (go7007_stream_start(go) < 0) { |
| 328 | printk(KERN_ERR "go7007: error starting stream transfer\n"); |
| 329 | rv = -1; |
| 330 | goto start_error; |
| 331 | } |
| 332 | |
| 333 | start_error: |
| 334 | kfree(fw); |
| 335 | return rv; |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * Store a byte in the current video buffer, if there is one. |
| 340 | */ |
| 341 | static inline void store_byte(struct go7007_buffer *gobuf, u8 byte) |
| 342 | { |
| 343 | if (gobuf != NULL && gobuf->bytesused < GO7007_BUF_SIZE) { |
| 344 | unsigned int pgidx = gobuf->offset >> PAGE_SHIFT; |
| 345 | unsigned int pgoff = gobuf->offset & ~PAGE_MASK; |
| 346 | |
| 347 | *((u8 *)page_address(gobuf->pages[pgidx]) + pgoff) = byte; |
| 348 | ++gobuf->offset; |
| 349 | ++gobuf->bytesused; |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Deliver the last video buffer and get a new one to start writing to. |
| 355 | */ |
| 356 | static void frame_boundary(struct go7007 *go) |
| 357 | { |
| 358 | struct go7007_buffer *gobuf; |
| 359 | int i; |
| 360 | |
| 361 | if (go->active_buf) { |
| 362 | if (go->active_buf->modet_active) { |
| 363 | if (go->active_buf->bytesused + 216 < GO7007_BUF_SIZE) { |
| 364 | for (i = 0; i < 216; ++i) |
| 365 | store_byte(go->active_buf, |
| 366 | go->active_map[i]); |
| 367 | go->active_buf->bytesused -= 216; |
| 368 | } else |
| 369 | go->active_buf->modet_active = 0; |
| 370 | } |
| 371 | go->active_buf->state = BUF_STATE_DONE; |
| 372 | wake_up_interruptible(&go->frame_waitq); |
| 373 | go->active_buf = NULL; |
| 374 | } |
| 375 | list_for_each_entry(gobuf, &go->stream, stream) |
| 376 | if (gobuf->state == BUF_STATE_QUEUED) { |
| 377 | gobuf->seq = go->next_seq; |
| 378 | do_gettimeofday(&gobuf->timestamp); |
| 379 | go->active_buf = gobuf; |
| 380 | break; |
| 381 | } |
| 382 | ++go->next_seq; |
| 383 | } |
| 384 | |
| 385 | static void write_bitmap_word(struct go7007 *go) |
| 386 | { |
| 387 | int x, y, i, stride = ((go->width >> 4) + 7) >> 3; |
| 388 | |
| 389 | for (i = 0; i < 16; ++i) { |
| 390 | y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); |
| 391 | x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); |
| 392 | go->active_map[stride * y + (x >> 3)] |= |
| 393 | (go->modet_word & 1) << (x & 0x7); |
| 394 | go->modet_word >>= 1; |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | /* |
| 399 | * Parse a chunk of the video stream into frames. The frames are not |
| 400 | * delimited by the hardware, so we have to parse the frame boundaries |
| 401 | * based on the type of video stream we're receiving. |
| 402 | */ |
| 403 | void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) |
| 404 | { |
| 405 | int i, seq_start_code = -1, frame_start_code = -1; |
| 406 | |
| 407 | spin_lock(&go->spinlock); |
| 408 | |
| 409 | switch (go->format) { |
| 410 | case GO7007_FORMAT_MPEG4: |
| 411 | seq_start_code = 0xB0; |
| 412 | frame_start_code = 0xB6; |
| 413 | break; |
| 414 | case GO7007_FORMAT_MPEG1: |
| 415 | case GO7007_FORMAT_MPEG2: |
| 416 | seq_start_code = 0xB3; |
| 417 | frame_start_code = 0x00; |
| 418 | break; |
| 419 | } |
| 420 | |
| 421 | for (i = 0; i < length; ++i) { |
| 422 | if (go->active_buf != NULL && |
| 423 | go->active_buf->bytesused >= GO7007_BUF_SIZE - 3) { |
| 424 | printk(KERN_DEBUG "go7007: dropping oversized frame\n"); |
| 425 | go->active_buf->offset -= go->active_buf->bytesused; |
| 426 | go->active_buf->bytesused = 0; |
| 427 | go->active_buf->modet_active = 0; |
| 428 | go->active_buf = NULL; |
| 429 | } |
| 430 | |
| 431 | switch (go->state) { |
| 432 | case STATE_DATA: |
| 433 | switch (buf[i]) { |
| 434 | case 0x00: |
| 435 | go->state = STATE_00; |
| 436 | break; |
| 437 | case 0xFF: |
| 438 | go->state = STATE_FF; |
| 439 | break; |
| 440 | default: |
| 441 | store_byte(go->active_buf, buf[i]); |
| 442 | break; |
| 443 | } |
| 444 | break; |
| 445 | case STATE_00: |
| 446 | switch (buf[i]) { |
| 447 | case 0x00: |
| 448 | go->state = STATE_00_00; |
| 449 | break; |
| 450 | case 0xFF: |
| 451 | store_byte(go->active_buf, 0x00); |
| 452 | go->state = STATE_FF; |
| 453 | break; |
| 454 | default: |
| 455 | store_byte(go->active_buf, 0x00); |
| 456 | store_byte(go->active_buf, buf[i]); |
| 457 | go->state = STATE_DATA; |
| 458 | break; |
| 459 | } |
| 460 | break; |
| 461 | case STATE_00_00: |
| 462 | switch (buf[i]) { |
| 463 | case 0x00: |
| 464 | store_byte(go->active_buf, 0x00); |
| 465 | /* go->state remains STATE_00_00 */ |
| 466 | break; |
| 467 | case 0x01: |
| 468 | go->state = STATE_00_00_01; |
| 469 | break; |
| 470 | case 0xFF: |
| 471 | store_byte(go->active_buf, 0x00); |
| 472 | store_byte(go->active_buf, 0x00); |
| 473 | go->state = STATE_FF; |
| 474 | break; |
| 475 | default: |
| 476 | store_byte(go->active_buf, 0x00); |
| 477 | store_byte(go->active_buf, 0x00); |
| 478 | store_byte(go->active_buf, buf[i]); |
| 479 | go->state = STATE_DATA; |
| 480 | break; |
| 481 | } |
| 482 | break; |
| 483 | case STATE_00_00_01: |
| 484 | /* If this is the start of a new MPEG frame, |
| 485 | * get a new buffer */ |
| 486 | if ((go->format == GO7007_FORMAT_MPEG1 || |
| 487 | go->format == GO7007_FORMAT_MPEG2 || |
| 488 | go->format == GO7007_FORMAT_MPEG4) && |
| 489 | (buf[i] == seq_start_code || |
| 490 | buf[i] == 0xB8 || /* GOP code */ |
| 491 | buf[i] == frame_start_code)) { |
| 492 | if (go->active_buf == NULL || go->seen_frame) |
| 493 | frame_boundary(go); |
| 494 | if (buf[i] == frame_start_code) { |
| 495 | if (go->active_buf != NULL) |
| 496 | go->active_buf->frame_offset = |
| 497 | go->active_buf->offset; |
| 498 | go->seen_frame = 1; |
| 499 | } else { |
| 500 | go->seen_frame = 0; |
| 501 | } |
| 502 | } |
| 503 | /* Handle any special chunk types, or just write the |
| 504 | * start code to the (potentially new) buffer */ |
| 505 | switch (buf[i]) { |
| 506 | case 0xF5: /* timestamp */ |
| 507 | go->parse_length = 12; |
| 508 | go->state = STATE_UNPARSED; |
| 509 | break; |
| 510 | case 0xF6: /* vbi */ |
| 511 | go->state = STATE_VBI_LEN_A; |
| 512 | break; |
| 513 | case 0xF8: /* MD map */ |
| 514 | go->parse_length = 0; |
| 515 | memset(go->active_map, 0, |
| 516 | sizeof(go->active_map)); |
| 517 | go->state = STATE_MODET_MAP; |
| 518 | break; |
| 519 | case 0xFF: /* Potential JPEG start code */ |
| 520 | store_byte(go->active_buf, 0x00); |
| 521 | store_byte(go->active_buf, 0x00); |
| 522 | store_byte(go->active_buf, 0x01); |
| 523 | go->state = STATE_FF; |
| 524 | break; |
| 525 | default: |
| 526 | store_byte(go->active_buf, 0x00); |
| 527 | store_byte(go->active_buf, 0x00); |
| 528 | store_byte(go->active_buf, 0x01); |
| 529 | store_byte(go->active_buf, buf[i]); |
| 530 | go->state = STATE_DATA; |
| 531 | break; |
| 532 | } |
| 533 | break; |
| 534 | case STATE_FF: |
| 535 | switch (buf[i]) { |
| 536 | case 0x00: |
| 537 | store_byte(go->active_buf, 0xFF); |
| 538 | go->state = STATE_00; |
| 539 | break; |
| 540 | case 0xFF: |
| 541 | store_byte(go->active_buf, 0xFF); |
| 542 | /* go->state remains STATE_FF */ |
| 543 | break; |
| 544 | case 0xD8: |
| 545 | if (go->format == GO7007_FORMAT_MJPEG) |
| 546 | frame_boundary(go); |
| 547 | /* fall through */ |
| 548 | default: |
| 549 | store_byte(go->active_buf, 0xFF); |
| 550 | store_byte(go->active_buf, buf[i]); |
| 551 | go->state = STATE_DATA; |
| 552 | break; |
| 553 | } |
| 554 | break; |
| 555 | case STATE_VBI_LEN_A: |
| 556 | go->parse_length = buf[i] << 8; |
| 557 | go->state = STATE_VBI_LEN_B; |
| 558 | break; |
| 559 | case STATE_VBI_LEN_B: |
| 560 | go->parse_length |= buf[i]; |
| 561 | if (go->parse_length > 0) |
| 562 | go->state = STATE_UNPARSED; |
| 563 | else |
| 564 | go->state = STATE_DATA; |
| 565 | break; |
| 566 | case STATE_MODET_MAP: |
| 567 | if (go->parse_length < 204) { |
| 568 | if (go->parse_length & 1) { |
| 569 | go->modet_word |= buf[i]; |
| 570 | write_bitmap_word(go); |
| 571 | } else |
| 572 | go->modet_word = buf[i] << 8; |
| 573 | } else if (go->parse_length == 207 && go->active_buf) { |
| 574 | go->active_buf->modet_active = buf[i]; |
| 575 | } |
| 576 | if (++go->parse_length == 208) |
| 577 | go->state = STATE_DATA; |
| 578 | break; |
| 579 | case STATE_UNPARSED: |
| 580 | if (--go->parse_length == 0) |
| 581 | go->state = STATE_DATA; |
| 582 | break; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | spin_unlock(&go->spinlock); |
| 587 | } |
| 588 | EXPORT_SYMBOL(go7007_parse_video_stream); |
| 589 | |
| 590 | /* |
| 591 | * Allocate a new go7007 struct. Used by the hardware-specific probe. |
| 592 | */ |
| 593 | struct go7007 *go7007_alloc(struct go7007_board_info *board, struct device *dev) |
| 594 | { |
| 595 | struct go7007 *go; |
| 596 | int i; |
| 597 | |
| 598 | go = kmalloc(sizeof(struct go7007), GFP_KERNEL); |
| 599 | if (go == NULL) |
| 600 | return NULL; |
| 601 | go->dev = dev; |
| 602 | go->board_info = board; |
| 603 | go->board_id = 0; |
| 604 | go->tuner_type = -1; |
| 605 | go->channel_number = 0; |
| 606 | go->name[0] = 0; |
| 607 | init_MUTEX(&go->hw_lock); |
| 608 | init_waitqueue_head(&go->frame_waitq); |
| 609 | spin_lock_init(&go->spinlock); |
| 610 | go->video_dev = NULL; |
| 611 | go->ref_count = 0; |
| 612 | go->status = STATUS_INIT; |
| 613 | memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter)); |
| 614 | go->i2c_adapter_online = 0; |
| 615 | go->interrupt_available = 0; |
| 616 | init_waitqueue_head(&go->interrupt_waitq); |
| 617 | go->in_use = 0; |
| 618 | go->input = 0; |
| 619 | if (board->sensor_flags & GO7007_SENSOR_TV) { |
| 620 | go->standard = GO7007_STD_NTSC; |
| 621 | go->width = 720; |
| 622 | go->height = 480; |
| 623 | go->sensor_framerate = 30000; |
| 624 | } else { |
| 625 | go->standard = GO7007_STD_OTHER; |
| 626 | go->width = board->sensor_width; |
| 627 | go->height = board->sensor_height; |
| 628 | go->sensor_framerate = board->sensor_framerate; |
| 629 | } |
| 630 | go->encoder_v_offset = board->sensor_v_offset; |
| 631 | go->encoder_h_offset = board->sensor_h_offset; |
| 632 | go->encoder_h_halve = 0; |
| 633 | go->encoder_v_halve = 0; |
| 634 | go->encoder_subsample = 0; |
| 635 | go->streaming = 0; |
| 636 | go->format = GO7007_FORMAT_MJPEG; |
| 637 | go->bitrate = 1500000; |
| 638 | go->fps_scale = 1; |
| 639 | go->pali = 0; |
| 640 | go->aspect_ratio = GO7007_RATIO_1_1; |
| 641 | go->gop_size = 0; |
| 642 | go->ipb = 0; |
| 643 | go->closed_gop = 0; |
| 644 | go->repeat_seqhead = 0; |
| 645 | go->seq_header_enable = 0; |
| 646 | go->gop_header_enable = 0; |
| 647 | go->dvd_mode = 0; |
| 648 | go->interlace_coding = 0; |
| 649 | for (i = 0; i < 4; ++i) |
| 650 | go->modet[i].enable = 0;; |
| 651 | for (i = 0; i < 1624; ++i) |
| 652 | go->modet_map[i] = 0; |
| 653 | go->audio_deliver = NULL; |
| 654 | go->audio_enabled = 0; |
| 655 | INIT_LIST_HEAD(&go->stream); |
| 656 | |
| 657 | return go; |
| 658 | } |
| 659 | EXPORT_SYMBOL(go7007_alloc); |
| 660 | |
| 661 | /* |
| 662 | * Detach and unregister the encoder. The go7007 struct won't be freed |
| 663 | * until v4l2 finishes releasing its resources and all associated fds are |
| 664 | * closed by applications. |
| 665 | */ |
| 666 | void go7007_remove(struct go7007 *go) |
| 667 | { |
| 668 | if (go->i2c_adapter_online) { |
| 669 | if (i2c_del_adapter(&go->i2c_adapter) == 0) |
| 670 | go->i2c_adapter_online = 0; |
| 671 | else |
| 672 | printk(KERN_ERR |
| 673 | "go7007: error removing I2C adapter!\n"); |
| 674 | } |
| 675 | |
| 676 | if (go->audio_enabled) |
| 677 | go7007_snd_remove(go); |
| 678 | go7007_v4l2_remove(go); |
| 679 | } |
| 680 | EXPORT_SYMBOL(go7007_remove); |
| 681 | |
| 682 | MODULE_LICENSE("GPL v2"); |