2 * Copyright (C) 2005-2006 Micronas USA Inc.
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.
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.
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.
18 #include <linux/module.h>
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>
26 #include <linux/vmalloc.h>
27 #include <linux/device.h>
28 #include <linux/i2c.h>
29 #include <linux/firmware.h>
30 #include <linux/mutex.h>
31 #include <linux/uaccess.h>
32 #include <asm/system.h>
33 #include <linux/videodev2.h>
34 #include <media/tuner.h>
35 #include <media/v4l2-common.h>
37 #include "go7007-priv.h"
41 * Wait for an interrupt to be delivered from the GO7007SB and return
42 * the associated value and data.
44 * Must be called with the hw_lock held.
46 int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data)
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 v4l2_err(&go->v4l2_dev, "timeout waiting for read interrupt\n");
55 if (!go->interrupt_available)
57 go->interrupt_available = 0;
58 *value = go->interrupt_value & 0xfffe;
59 *data = go->interrupt_data;
62 EXPORT_SYMBOL(go7007_read_interrupt);
65 * Read a register/address on the GO7007SB.
67 * Must be called with the hw_lock held.
69 int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data)
74 if (go7007_write_interrupt(go, 0x0010, addr) < 0)
77 if (go7007_read_interrupt(go, &value, data) == 0 &&
83 EXPORT_SYMBOL(go7007_read_addr);
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.
89 * Must be called with the hw_lock held.
91 static int go7007_load_encoder(struct go7007 *go)
93 const struct firmware *fw_entry;
94 char fw_name[] = "go7007fw.bin";
97 u16 intr_val, intr_data;
99 if (request_firmware(&fw_entry, fw_name, go->dev)) {
100 v4l2_err(go, "unable to load firmware from file "
101 "\"%s\"\n", fw_name);
104 if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) {
105 v4l2_err(go, "file \"%s\" does not appear to be "
106 "go7007 firmware\n", fw_name);
107 release_firmware(fw_entry);
110 fw_len = fw_entry->size - 16;
111 bounce = kmalloc(fw_len, GFP_KERNEL);
112 if (bounce == NULL) {
113 v4l2_err(go, "unable to allocate %d bytes for "
114 "firmware transfer\n", fw_len);
115 release_firmware(fw_entry);
118 memcpy(bounce, fw_entry->data + 16, fw_len);
119 release_firmware(fw_entry);
120 if (go7007_interface_reset(go) < 0 ||
121 go7007_send_firmware(go, bounce, fw_len) < 0 ||
122 go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
123 (intr_val & ~0x1) != 0x5a5a) {
124 v4l2_err(go, "error transferring firmware\n");
132 * Boot the encoder and register the I2C adapter if requested. Do the
133 * minimum initialization necessary, since the board-specific code may
134 * still need to probe the board ID.
136 * Must NOT be called with the hw_lock held.
138 int go7007_boot_encoder(struct go7007 *go, int init_i2c)
142 mutex_lock(&go->hw_lock);
143 ret = go7007_load_encoder(go);
144 mutex_unlock(&go->hw_lock);
149 if (go7007_i2c_init(go) < 0)
151 go->i2c_adapter_online = 1;
154 EXPORT_SYMBOL(go7007_boot_encoder);
157 * Configure any hardware-related registers in the GO7007, such as GPIO
158 * pins and bus parameters, which are board-specific. This assumes
159 * the boot firmware has already been downloaded.
161 * Must be called with the hw_lock held.
163 static int go7007_init_encoder(struct go7007 *go)
165 if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) {
166 go7007_write_addr(go, 0x1000, 0x0811);
167 go7007_write_addr(go, 0x1000, 0x0c11);
169 if (go->board_id == GO7007_BOARDID_MATRIX_REV) {
170 /* Set GPIO pin 0 to be an output (audio clock control) */
171 go7007_write_addr(go, 0x3c82, 0x0001);
172 go7007_write_addr(go, 0x3c80, 0x00fe);
178 * Send the boot firmware to the GO7007 and configure the registers. This
179 * is the only way to stop the encoder once it has started streaming video.
181 * Must be called with the hw_lock held.
183 int go7007_reset_encoder(struct go7007 *go)
185 if (go7007_load_encoder(go) < 0)
187 return go7007_init_encoder(go);
191 * Attempt to instantiate an I2C client by ID, probably loading a module.
193 static int init_i2c_module(struct i2c_adapter *adapter, const char *type,
196 struct go7007 *go = i2c_get_adapdata(adapter);
197 struct v4l2_device *v4l2_dev = &go->v4l2_dev;
201 case I2C_DRIVERID_WIS_SAA7115:
202 modname = "wis-saa7115";
204 case I2C_DRIVERID_WIS_SAA7113:
205 modname = "wis-saa7113";
207 case I2C_DRIVERID_WIS_UDA1342:
208 modname = "wis-uda1342";
210 case I2C_DRIVERID_WIS_SONY_TUNER:
211 modname = "wis-sony-tuner";
213 case I2C_DRIVERID_WIS_TW9903:
214 modname = "wis-tw9903";
216 case I2C_DRIVERID_WIS_TW2804:
217 modname = "wis-tw2804";
219 case I2C_DRIVERID_WIS_OV7640:
220 modname = "wis-ov7640";
222 case I2C_DRIVERID_S2250:
230 if (v4l2_i2c_new_subdev(v4l2_dev, adapter, modname, type, addr, NULL))
235 "go7007: probing for module %s failed\n", modname);
238 "go7007: sensor %u seems to be unsupported!\n", id);
243 * Finalize the GO7007 hardware setup, register the on-board I2C adapter
244 * (if used on this board), load the I2C client driver for the sensor
245 * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2
248 * Must NOT be called with the hw_lock held.
250 int go7007_register_encoder(struct go7007 *go)
254 printk(KERN_INFO "go7007: registering new %s\n", go->name);
256 mutex_lock(&go->hw_lock);
257 ret = go7007_init_encoder(go);
258 mutex_unlock(&go->hw_lock);
262 /* v4l2 init must happen before i2c subdevs */
263 ret = go7007_v4l2_init(go);
267 if (!go->i2c_adapter_online &&
268 go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) {
269 if (go7007_i2c_init(go) < 0)
271 go->i2c_adapter_online = 1;
273 if (go->i2c_adapter_online) {
274 for (i = 0; i < go->board_info->num_i2c_devs; ++i)
275 init_i2c_module(&go->i2c_adapter,
276 go->board_info->i2c_devs[i].type,
277 go->board_info->i2c_devs[i].id,
278 go->board_info->i2c_devs[i].addr);
279 if (go->board_id == GO7007_BOARDID_ADLINK_MPG24)
280 i2c_clients_command(&go->i2c_adapter,
281 DECODER_SET_CHANNEL, &go->channel_number);
283 if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) {
284 go->audio_enabled = 1;
289 EXPORT_SYMBOL(go7007_register_encoder);
292 * Send the encode firmware to the encoder, which will cause it
293 * to immediately start delivering the video and audio streams.
295 * Must be called with the hw_lock held.
297 int go7007_start_encoder(struct go7007 *go)
300 int fw_len, rv = 0, i;
301 u16 intr_val, intr_data;
303 go->modet_enable = 0;
305 for (i = 0; i < 4; ++i) {
306 if (go->modet[i].enable) {
307 go->modet_enable = 1;
310 go->modet[i].pixel_threshold = 32767;
311 go->modet[i].motion_threshold = 32767;
312 go->modet[i].mb_threshold = 32767;
315 if (go7007_construct_fw_image(go, &fw, &fw_len) < 0)
318 if (go7007_send_firmware(go, fw, fw_len) < 0 ||
319 go7007_read_interrupt(go, &intr_val, &intr_data) < 0) {
320 v4l2_err(&go->v4l2_dev, "error transferring firmware\n");
325 go->state = STATE_DATA;
326 go->parse_length = 0;
328 if (go7007_stream_start(go) < 0) {
329 v4l2_err(&go->v4l2_dev, "error starting stream transfer\n");
340 * Store a byte in the current video buffer, if there is one.
342 static inline void store_byte(struct go7007_buffer *gobuf, u8 byte)
344 if (gobuf != NULL && gobuf->bytesused < GO7007_BUF_SIZE) {
345 unsigned int pgidx = gobuf->offset >> PAGE_SHIFT;
346 unsigned int pgoff = gobuf->offset & ~PAGE_MASK;
348 *((u8 *)page_address(gobuf->pages[pgidx]) + pgoff) = byte;
355 * Deliver the last video buffer and get a new one to start writing to.
357 static void frame_boundary(struct go7007 *go)
359 struct go7007_buffer *gobuf;
362 if (go->active_buf) {
363 if (go->active_buf->modet_active) {
364 if (go->active_buf->bytesused + 216 < GO7007_BUF_SIZE) {
365 for (i = 0; i < 216; ++i)
366 store_byte(go->active_buf,
368 go->active_buf->bytesused -= 216;
370 go->active_buf->modet_active = 0;
372 go->active_buf->state = BUF_STATE_DONE;
373 wake_up_interruptible(&go->frame_waitq);
374 go->active_buf = NULL;
376 list_for_each_entry(gobuf, &go->stream, stream)
377 if (gobuf->state == BUF_STATE_QUEUED) {
378 gobuf->seq = go->next_seq;
379 do_gettimeofday(&gobuf->timestamp);
380 go->active_buf = gobuf;
386 static void write_bitmap_word(struct go7007 *go)
388 int x, y, i, stride = ((go->width >> 4) + 7) >> 3;
390 for (i = 0; i < 16; ++i) {
391 y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4);
392 x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4);
393 go->active_map[stride * y + (x >> 3)] |=
394 (go->modet_word & 1) << (x & 0x7);
395 go->modet_word >>= 1;
400 * Parse a chunk of the video stream into frames. The frames are not
401 * delimited by the hardware, so we have to parse the frame boundaries
402 * based on the type of video stream we're receiving.
404 void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length)
406 int i, seq_start_code = -1, frame_start_code = -1;
408 spin_lock(&go->spinlock);
410 switch (go->format) {
411 case GO7007_FORMAT_MPEG4:
412 seq_start_code = 0xB0;
413 frame_start_code = 0xB6;
415 case GO7007_FORMAT_MPEG1:
416 case GO7007_FORMAT_MPEG2:
417 seq_start_code = 0xB3;
418 frame_start_code = 0x00;
422 for (i = 0; i < length; ++i) {
423 if (go->active_buf != NULL &&
424 go->active_buf->bytesused >= GO7007_BUF_SIZE - 3) {
425 v4l2_info(&go->v4l2_dev, "dropping oversized frame\n");
426 go->active_buf->offset -= go->active_buf->bytesused;
427 go->active_buf->bytesused = 0;
428 go->active_buf->modet_active = 0;
429 go->active_buf = NULL;
436 go->state = STATE_00;
439 go->state = STATE_FF;
442 store_byte(go->active_buf, buf[i]);
449 go->state = STATE_00_00;
452 store_byte(go->active_buf, 0x00);
453 go->state = STATE_FF;
456 store_byte(go->active_buf, 0x00);
457 store_byte(go->active_buf, buf[i]);
458 go->state = STATE_DATA;
465 store_byte(go->active_buf, 0x00);
466 /* go->state remains STATE_00_00 */
469 go->state = STATE_00_00_01;
472 store_byte(go->active_buf, 0x00);
473 store_byte(go->active_buf, 0x00);
474 go->state = STATE_FF;
477 store_byte(go->active_buf, 0x00);
478 store_byte(go->active_buf, 0x00);
479 store_byte(go->active_buf, buf[i]);
480 go->state = STATE_DATA;
485 /* If this is the start of a new MPEG frame,
486 * get a new buffer */
487 if ((go->format == GO7007_FORMAT_MPEG1 ||
488 go->format == GO7007_FORMAT_MPEG2 ||
489 go->format == GO7007_FORMAT_MPEG4) &&
490 (buf[i] == seq_start_code ||
491 buf[i] == 0xB8 || /* GOP code */
492 buf[i] == frame_start_code)) {
493 if (go->active_buf == NULL || go->seen_frame)
495 if (buf[i] == frame_start_code) {
496 if (go->active_buf != NULL)
497 go->active_buf->frame_offset =
498 go->active_buf->offset;
504 /* Handle any special chunk types, or just write the
505 * start code to the (potentially new) buffer */
507 case 0xF5: /* timestamp */
508 go->parse_length = 12;
509 go->state = STATE_UNPARSED;
512 go->state = STATE_VBI_LEN_A;
514 case 0xF8: /* MD map */
515 go->parse_length = 0;
516 memset(go->active_map, 0,
517 sizeof(go->active_map));
518 go->state = STATE_MODET_MAP;
520 case 0xFF: /* Potential JPEG start code */
521 store_byte(go->active_buf, 0x00);
522 store_byte(go->active_buf, 0x00);
523 store_byte(go->active_buf, 0x01);
524 go->state = STATE_FF;
527 store_byte(go->active_buf, 0x00);
528 store_byte(go->active_buf, 0x00);
529 store_byte(go->active_buf, 0x01);
530 store_byte(go->active_buf, buf[i]);
531 go->state = STATE_DATA;
538 store_byte(go->active_buf, 0xFF);
539 go->state = STATE_00;
542 store_byte(go->active_buf, 0xFF);
543 /* go->state remains STATE_FF */
546 if (go->format == GO7007_FORMAT_MJPEG)
550 store_byte(go->active_buf, 0xFF);
551 store_byte(go->active_buf, buf[i]);
552 go->state = STATE_DATA;
556 case STATE_VBI_LEN_A:
557 go->parse_length = buf[i] << 8;
558 go->state = STATE_VBI_LEN_B;
560 case STATE_VBI_LEN_B:
561 go->parse_length |= buf[i];
562 if (go->parse_length > 0)
563 go->state = STATE_UNPARSED;
565 go->state = STATE_DATA;
567 case STATE_MODET_MAP:
568 if (go->parse_length < 204) {
569 if (go->parse_length & 1) {
570 go->modet_word |= buf[i];
571 write_bitmap_word(go);
573 go->modet_word = buf[i] << 8;
574 } else if (go->parse_length == 207 && go->active_buf) {
575 go->active_buf->modet_active = buf[i];
577 if (++go->parse_length == 208)
578 go->state = STATE_DATA;
581 if (--go->parse_length == 0)
582 go->state = STATE_DATA;
587 spin_unlock(&go->spinlock);
589 EXPORT_SYMBOL(go7007_parse_video_stream);
592 * Allocate a new go7007 struct. Used by the hardware-specific probe.
594 struct go7007 *go7007_alloc(struct go7007_board_info *board, struct device *dev)
599 go = kmalloc(sizeof(struct go7007), GFP_KERNEL);
603 go->board_info = board;
606 go->channel_number = 0;
608 mutex_init(&go->hw_lock);
609 init_waitqueue_head(&go->frame_waitq);
610 spin_lock_init(&go->spinlock);
611 go->video_dev = NULL;
613 go->status = STATUS_INIT;
614 memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter));
615 go->i2c_adapter_online = 0;
616 go->interrupt_available = 0;
617 init_waitqueue_head(&go->interrupt_waitq);
620 if (board->sensor_flags & GO7007_SENSOR_TV) {
621 go->standard = GO7007_STD_NTSC;
624 go->sensor_framerate = 30000;
626 go->standard = GO7007_STD_OTHER;
627 go->width = board->sensor_width;
628 go->height = board->sensor_height;
629 go->sensor_framerate = board->sensor_framerate;
631 go->encoder_v_offset = board->sensor_v_offset;
632 go->encoder_h_offset = board->sensor_h_offset;
633 go->encoder_h_halve = 0;
634 go->encoder_v_halve = 0;
635 go->encoder_subsample = 0;
637 go->format = GO7007_FORMAT_MJPEG;
638 go->bitrate = 1500000;
641 go->aspect_ratio = GO7007_RATIO_1_1;
645 go->repeat_seqhead = 0;
646 go->seq_header_enable = 0;
647 go->gop_header_enable = 0;
649 go->interlace_coding = 0;
650 for (i = 0; i < 4; ++i)
651 go->modet[i].enable = 0;;
652 for (i = 0; i < 1624; ++i)
653 go->modet_map[i] = 0;
654 go->audio_deliver = NULL;
655 go->audio_enabled = 0;
656 INIT_LIST_HEAD(&go->stream);
660 EXPORT_SYMBOL(go7007_alloc);
663 * Detach and unregister the encoder. The go7007 struct won't be freed
664 * until v4l2 finishes releasing its resources and all associated fds are
665 * closed by applications.
667 void go7007_remove(struct go7007 *go)
669 if (go->i2c_adapter_online) {
670 if (i2c_del_adapter(&go->i2c_adapter) == 0)
671 go->i2c_adapter_online = 0;
673 v4l2_err(&go->v4l2_dev,
674 "error removing I2C adapter!\n");
677 if (go->audio_enabled)
678 go7007_snd_remove(go);
679 go7007_v4l2_remove(go);
681 EXPORT_SYMBOL(go7007_remove);
683 MODULE_LICENSE("GPL v2");