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Commit | Line | Data |
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866b8695 GKH |
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. | |
866b8695 GKH |
12 | */ |
13 | ||
14 | #include <linux/module.h> | |
866b8695 GKH |
15 | #include <linux/delay.h> |
16 | #include <linux/sched.h> | |
17 | #include <linux/spinlock.h> | |
18 | #include <linux/unistd.h> | |
19 | #include <linux/time.h> | |
20 | #include <linux/mm.h> | |
21 | #include <linux/vmalloc.h> | |
22 | #include <linux/device.h> | |
23 | #include <linux/i2c.h> | |
24 | #include <linux/firmware.h> | |
fd9a40da | 25 | #include <linux/mutex.h> |
866b8695 | 26 | #include <linux/uaccess.h> |
5a0e3ad6 | 27 | #include <linux/slab.h> |
df20d69e | 28 | #include <linux/videodev2.h> |
866b8695 GKH |
29 | #include <media/tuner.h> |
30 | #include <media/v4l2-common.h> | |
0ee58f84 | 31 | #include <media/v4l2-event.h> |
866b8695 GKH |
32 | |
33 | #include "go7007-priv.h" | |
866b8695 GKH |
34 | |
35 | /* | |
36 | * Wait for an interrupt to be delivered from the GO7007SB and return | |
37 | * the associated value and data. | |
38 | * | |
39 | * Must be called with the hw_lock held. | |
40 | */ | |
41 | int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data) | |
42 | { | |
43 | go->interrupt_available = 0; | |
44 | go->hpi_ops->read_interrupt(go); | |
45 | if (wait_event_timeout(go->interrupt_waitq, | |
46 | go->interrupt_available, 5*HZ) < 0) { | |
0b398f4f | 47 | v4l2_err(&go->v4l2_dev, "timeout waiting for read interrupt\n"); |
866b8695 GKH |
48 | return -1; |
49 | } | |
50 | if (!go->interrupt_available) | |
51 | return -1; | |
52 | go->interrupt_available = 0; | |
53 | *value = go->interrupt_value & 0xfffe; | |
54 | *data = go->interrupt_data; | |
55 | return 0; | |
56 | } | |
57 | EXPORT_SYMBOL(go7007_read_interrupt); | |
58 | ||
59 | /* | |
60 | * Read a register/address on the GO7007SB. | |
61 | * | |
62 | * Must be called with the hw_lock held. | |
63 | */ | |
64 | int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data) | |
65 | { | |
66 | int count = 100; | |
67 | u16 value; | |
68 | ||
69 | if (go7007_write_interrupt(go, 0x0010, addr) < 0) | |
70 | return -EIO; | |
71 | while (count-- > 0) { | |
72 | if (go7007_read_interrupt(go, &value, data) == 0 && | |
73 | value == 0xa000) | |
74 | return 0; | |
75 | } | |
76 | return -EIO; | |
77 | } | |
78 | EXPORT_SYMBOL(go7007_read_addr); | |
79 | ||
80 | /* | |
81 | * Send the boot firmware to the encoder, which just wakes it up and lets | |
82 | * us talk to the GPIO pins and on-board I2C adapter. | |
83 | * | |
84 | * Must be called with the hw_lock held. | |
85 | */ | |
86 | static int go7007_load_encoder(struct go7007 *go) | |
87 | { | |
88 | const struct firmware *fw_entry; | |
0ee3d4d5 | 89 | char fw_name[] = "go7007/go7007fw.bin"; |
866b8695 GKH |
90 | void *bounce; |
91 | int fw_len, rv = 0; | |
92 | u16 intr_val, intr_data; | |
93 | ||
95ef3940 HV |
94 | if (go->boot_fw == NULL) { |
95 | if (request_firmware(&fw_entry, fw_name, go->dev)) { | |
96 | v4l2_err(go, "unable to load firmware from file \"%s\"\n", fw_name); | |
97 | return -1; | |
98 | } | |
99 | if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) { | |
100 | v4l2_err(go, "file \"%s\" does not appear to be go7007 firmware\n", fw_name); | |
101 | release_firmware(fw_entry); | |
102 | return -1; | |
103 | } | |
104 | fw_len = fw_entry->size - 16; | |
105 | bounce = kmemdup(fw_entry->data + 16, fw_len, GFP_KERNEL); | |
106 | if (bounce == NULL) { | |
107 | v4l2_err(go, "unable to allocate %d bytes for firmware transfer\n", fw_len); | |
108 | release_firmware(fw_entry); | |
109 | return -1; | |
110 | } | |
866b8695 | 111 | release_firmware(fw_entry); |
95ef3940 HV |
112 | go->boot_fw_len = fw_len; |
113 | go->boot_fw = bounce; | |
866b8695 | 114 | } |
866b8695 | 115 | if (go7007_interface_reset(go) < 0 || |
95ef3940 HV |
116 | go7007_send_firmware(go, go->boot_fw, go->boot_fw_len) < 0 || |
117 | go7007_read_interrupt(go, &intr_val, &intr_data) < 0 || | |
866b8695 | 118 | (intr_val & ~0x1) != 0x5a5a) { |
62474076 | 119 | v4l2_err(go, "error transferring firmware\n"); |
866b8695 GKH |
120 | rv = -1; |
121 | } | |
866b8695 GKH |
122 | return rv; |
123 | } | |
124 | ||
0ee3d4d5 | 125 | MODULE_FIRMWARE("go7007/go7007fw.bin"); |
5d929a71 | 126 | |
866b8695 GKH |
127 | /* |
128 | * Boot the encoder and register the I2C adapter if requested. Do the | |
129 | * minimum initialization necessary, since the board-specific code may | |
130 | * still need to probe the board ID. | |
131 | * | |
132 | * Must NOT be called with the hw_lock held. | |
133 | */ | |
134 | int go7007_boot_encoder(struct go7007 *go, int init_i2c) | |
135 | { | |
136 | int ret; | |
137 | ||
fd9a40da | 138 | mutex_lock(&go->hw_lock); |
866b8695 | 139 | ret = go7007_load_encoder(go); |
fd9a40da | 140 | mutex_unlock(&go->hw_lock); |
866b8695 GKH |
141 | if (ret < 0) |
142 | return -1; | |
143 | if (!init_i2c) | |
144 | return 0; | |
145 | if (go7007_i2c_init(go) < 0) | |
146 | return -1; | |
147 | go->i2c_adapter_online = 1; | |
148 | return 0; | |
149 | } | |
150 | EXPORT_SYMBOL(go7007_boot_encoder); | |
151 | ||
152 | /* | |
153 | * Configure any hardware-related registers in the GO7007, such as GPIO | |
154 | * pins and bus parameters, which are board-specific. This assumes | |
155 | * the boot firmware has already been downloaded. | |
156 | * | |
157 | * Must be called with the hw_lock held. | |
158 | */ | |
159 | static int go7007_init_encoder(struct go7007 *go) | |
160 | { | |
161 | if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) { | |
162 | go7007_write_addr(go, 0x1000, 0x0811); | |
163 | go7007_write_addr(go, 0x1000, 0x0c11); | |
164 | } | |
1f1aed2e HV |
165 | switch (go->board_id) { |
166 | case GO7007_BOARDID_MATRIX_REV: | |
866b8695 GKH |
167 | /* Set GPIO pin 0 to be an output (audio clock control) */ |
168 | go7007_write_addr(go, 0x3c82, 0x0001); | |
169 | go7007_write_addr(go, 0x3c80, 0x00fe); | |
1f1aed2e HV |
170 | break; |
171 | case GO7007_BOARDID_ADLINK_MPG24: | |
d18b6acf VK |
172 | /* set GPIO5 to be an output, currently low */ |
173 | go7007_write_addr(go, 0x3c82, 0x0000); | |
174 | go7007_write_addr(go, 0x3c80, 0x00df); | |
1f1aed2e HV |
175 | break; |
176 | case GO7007_BOARDID_ADS_USBAV_709: | |
177 | /* GPIO pin 0: audio clock control */ | |
178 | /* pin 2: TW9906 reset */ | |
179 | /* pin 3: capture LED */ | |
180 | go7007_write_addr(go, 0x3c82, 0x000d); | |
181 | go7007_write_addr(go, 0x3c80, 0x00f2); | |
182 | break; | |
d18b6acf | 183 | } |
866b8695 GKH |
184 | return 0; |
185 | } | |
186 | ||
187 | /* | |
188 | * Send the boot firmware to the GO7007 and configure the registers. This | |
189 | * is the only way to stop the encoder once it has started streaming video. | |
190 | * | |
191 | * Must be called with the hw_lock held. | |
192 | */ | |
193 | int go7007_reset_encoder(struct go7007 *go) | |
194 | { | |
195 | if (go7007_load_encoder(go) < 0) | |
196 | return -1; | |
197 | return go7007_init_encoder(go); | |
198 | } | |
199 | ||
200 | /* | |
201 | * Attempt to instantiate an I2C client by ID, probably loading a module. | |
202 | */ | |
dcafb6de | 203 | static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *const i2c) |
866b8695 | 204 | { |
fa3c39bd PE |
205 | struct go7007 *go = i2c_get_adapdata(adapter); |
206 | struct v4l2_device *v4l2_dev = &go->v4l2_dev; | |
3acd16ab | 207 | struct v4l2_subdev *sd; |
dcafb6de | 208 | struct i2c_board_info info; |
866b8695 | 209 | |
dcafb6de VK |
210 | memset(&info, 0, sizeof(info)); |
211 | strlcpy(info.type, i2c->type, sizeof(info.type)); | |
212 | info.addr = i2c->addr; | |
213 | info.flags = i2c->flags; | |
214 | ||
3acd16ab HV |
215 | sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL); |
216 | if (sd) { | |
217 | if (i2c->is_video) | |
218 | go->sd_video = sd; | |
219 | if (i2c->is_audio) | |
220 | go->sd_audio = sd; | |
866b8695 | 221 | return 0; |
3acd16ab | 222 | } |
fa3c39bd | 223 | |
9707cb55 | 224 | pr_info("go7007: probing for module i2c:%s failed\n", i2c->type); |
dcafb6de | 225 | return -EINVAL; |
866b8695 GKH |
226 | } |
227 | ||
d5d3a7cc HV |
228 | /* |
229 | * Detach and unregister the encoder. The go7007 struct won't be freed | |
230 | * until v4l2 finishes releasing its resources and all associated fds are | |
231 | * closed by applications. | |
232 | */ | |
233 | static void go7007_remove(struct v4l2_device *v4l2_dev) | |
234 | { | |
235 | struct go7007 *go = container_of(v4l2_dev, struct go7007, v4l2_dev); | |
236 | ||
237 | v4l2_device_unregister(v4l2_dev); | |
238 | if (go->hpi_ops->release) | |
239 | go->hpi_ops->release(go); | |
240 | if (go->i2c_adapter_online) { | |
99bece77 LT |
241 | i2c_del_adapter(&go->i2c_adapter); |
242 | go->i2c_adapter_online = 0; | |
d5d3a7cc HV |
243 | } |
244 | ||
245 | kfree(go->boot_fw); | |
246 | go7007_v4l2_remove(go); | |
247 | kfree(go); | |
248 | } | |
249 | ||
866b8695 GKH |
250 | /* |
251 | * Finalize the GO7007 hardware setup, register the on-board I2C adapter | |
252 | * (if used on this board), load the I2C client driver for the sensor | |
253 | * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2 | |
254 | * interfaces. | |
255 | * | |
256 | * Must NOT be called with the hw_lock held. | |
257 | */ | |
3acd16ab | 258 | int go7007_register_encoder(struct go7007 *go, unsigned num_i2c_devs) |
866b8695 GKH |
259 | { |
260 | int i, ret; | |
261 | ||
6d569502 | 262 | dev_info(go->dev, "go7007: registering new %s\n", go->name); |
866b8695 | 263 | |
d5d3a7cc HV |
264 | go->v4l2_dev.release = go7007_remove; |
265 | ret = v4l2_device_register(go->dev, &go->v4l2_dev); | |
266 | if (ret < 0) | |
267 | return ret; | |
268 | ||
fd9a40da | 269 | mutex_lock(&go->hw_lock); |
866b8695 | 270 | ret = go7007_init_encoder(go); |
fd9a40da | 271 | mutex_unlock(&go->hw_lock); |
866b8695 | 272 | if (ret < 0) |
9b8451d5 HV |
273 | return ret; |
274 | ||
275 | ret = go7007_v4l2_ctrl_init(go); | |
276 | if (ret < 0) | |
277 | return ret; | |
866b8695 GKH |
278 | |
279 | if (!go->i2c_adapter_online && | |
280 | go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) { | |
9b8451d5 HV |
281 | ret = go7007_i2c_init(go); |
282 | if (ret < 0) | |
283 | return ret; | |
866b8695 GKH |
284 | go->i2c_adapter_online = 1; |
285 | } | |
286 | if (go->i2c_adapter_online) { | |
1f1aed2e HV |
287 | if (go->board_id == GO7007_BOARDID_ADS_USBAV_709) { |
288 | /* Reset the TW9906 */ | |
289 | go7007_write_addr(go, 0x3c82, 0x0009); | |
290 | msleep(50); | |
291 | go7007_write_addr(go, 0x3c82, 0x000d); | |
292 | } | |
3acd16ab | 293 | for (i = 0; i < num_i2c_devs; ++i) |
dcafb6de | 294 | init_i2c_module(&go->i2c_adapter, &go->board_info->i2c_devs[i]); |
3acd16ab HV |
295 | |
296 | if (go->tuner_type >= 0) { | |
297 | struct tuner_setup setup = { | |
298 | .addr = ADDR_UNSET, | |
299 | .type = go->tuner_type, | |
300 | .mode_mask = T_ANALOG_TV, | |
301 | }; | |
302 | ||
303 | v4l2_device_call_all(&go->v4l2_dev, 0, tuner, | |
304 | s_type_addr, &setup); | |
305 | } | |
866b8695 | 306 | if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) |
3acd16ab HV |
307 | v4l2_subdev_call(go->sd_video, video, s_routing, |
308 | 0, 0, go->channel_number + 1); | |
866b8695 | 309 | } |
d5d3a7cc HV |
310 | |
311 | ret = go7007_v4l2_init(go); | |
312 | if (ret < 0) | |
313 | return ret; | |
314 | ||
866b8695 GKH |
315 | if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) { |
316 | go->audio_enabled = 1; | |
317 | go7007_snd_init(go); | |
318 | } | |
fa3c39bd | 319 | return 0; |
866b8695 GKH |
320 | } |
321 | EXPORT_SYMBOL(go7007_register_encoder); | |
322 | ||
323 | /* | |
324 | * Send the encode firmware to the encoder, which will cause it | |
325 | * to immediately start delivering the video and audio streams. | |
326 | * | |
327 | * Must be called with the hw_lock held. | |
328 | */ | |
329 | int go7007_start_encoder(struct go7007 *go) | |
330 | { | |
331 | u8 *fw; | |
0ee58f84 | 332 | int fw_len, rv = 0, i, x, y; |
866b8695 GKH |
333 | u16 intr_val, intr_data; |
334 | ||
335 | go->modet_enable = 0; | |
0ee58f84 HV |
336 | for (i = 0; i < 4; i++) |
337 | go->modet[i].enable = 0; | |
338 | ||
339 | switch (v4l2_ctrl_g_ctrl(go->modet_mode)) { | |
340 | case V4L2_DETECT_MD_MODE_GLOBAL: | |
341 | memset(go->modet_map, 0, sizeof(go->modet_map)); | |
342 | go->modet[0].enable = 1; | |
343 | go->modet_enable = 1; | |
344 | break; | |
345 | case V4L2_DETECT_MD_MODE_REGION_GRID: | |
346 | for (y = 0; y < go->height / 16; y++) { | |
347 | for (x = 0; x < go->width / 16; x++) { | |
348 | int idx = y * go->width / 16 + x; | |
349 | ||
350 | go->modet[go->modet_map[idx]].enable = 1; | |
866b8695 | 351 | } |
866b8695 | 352 | } |
0ee58f84 HV |
353 | go->modet_enable = 1; |
354 | break; | |
355 | } | |
356 | ||
357 | if (go->dvd_mode) | |
358 | go->modet_enable = 0; | |
866b8695 GKH |
359 | |
360 | if (go7007_construct_fw_image(go, &fw, &fw_len) < 0) | |
361 | return -1; | |
362 | ||
363 | if (go7007_send_firmware(go, fw, fw_len) < 0 || | |
364 | go7007_read_interrupt(go, &intr_val, &intr_data) < 0) { | |
0b398f4f | 365 | v4l2_err(&go->v4l2_dev, "error transferring firmware\n"); |
866b8695 GKH |
366 | rv = -1; |
367 | goto start_error; | |
368 | } | |
369 | ||
370 | go->state = STATE_DATA; | |
371 | go->parse_length = 0; | |
372 | go->seen_frame = 0; | |
373 | if (go7007_stream_start(go) < 0) { | |
0b398f4f | 374 | v4l2_err(&go->v4l2_dev, "error starting stream transfer\n"); |
866b8695 GKH |
375 | rv = -1; |
376 | goto start_error; | |
377 | } | |
378 | ||
379 | start_error: | |
380 | kfree(fw); | |
381 | return rv; | |
382 | } | |
383 | ||
384 | /* | |
385 | * Store a byte in the current video buffer, if there is one. | |
386 | */ | |
ffcc1c08 | 387 | static inline void store_byte(struct go7007_buffer *vb, u8 byte) |
866b8695 | 388 | { |
2d700715 JS |
389 | if (vb && vb->vb.vb2_buf.planes[0].bytesused < GO7007_BUF_SIZE) { |
390 | u8 *ptr = vb2_plane_vaddr(&vb->vb.vb2_buf, 0); | |
866b8695 | 391 | |
2d700715 | 392 | ptr[vb->vb.vb2_buf.planes[0].bytesused++] = byte; |
866b8695 GKH |
393 | } |
394 | } | |
395 | ||
0ee58f84 HV |
396 | static void go7007_set_motion_regions(struct go7007 *go, struct go7007_buffer *vb, |
397 | u32 motion_regions) | |
398 | { | |
399 | if (motion_regions != go->modet_event_status) { | |
400 | struct v4l2_event ev = { | |
401 | .type = V4L2_EVENT_MOTION_DET, | |
402 | .u.motion_det = { | |
403 | .flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ, | |
2d700715 | 404 | .frame_sequence = vb->vb.sequence, |
0ee58f84 HV |
405 | .region_mask = motion_regions, |
406 | }, | |
407 | }; | |
408 | ||
409 | v4l2_event_queue(&go->vdev, &ev); | |
410 | go->modet_event_status = motion_regions; | |
411 | } | |
412 | } | |
413 | ||
866b8695 | 414 | /* |
0ee58f84 HV |
415 | * Determine regions with motion and send a motion detection event |
416 | * in case of changes. | |
866b8695 | 417 | */ |
0ee58f84 | 418 | static void go7007_motion_regions(struct go7007 *go, struct go7007_buffer *vb) |
866b8695 | 419 | { |
2d700715 | 420 | u32 *bytesused = &vb->vb.vb2_buf.planes[0].bytesused; |
0ee58f84 HV |
421 | unsigned motion[4] = { 0, 0, 0, 0 }; |
422 | u32 motion_regions = 0; | |
423 | unsigned stride = (go->width + 7) >> 3; | |
424 | unsigned x, y; | |
866b8695 GKH |
425 | int i; |
426 | ||
0ee58f84 HV |
427 | for (i = 0; i < 216; ++i) |
428 | store_byte(vb, go->active_map[i]); | |
429 | for (y = 0; y < go->height / 16; y++) { | |
430 | for (x = 0; x < go->width / 16; x++) { | |
431 | if (!(go->active_map[y * stride + (x >> 3)] & (1 << (x & 7)))) | |
432 | continue; | |
433 | motion[go->modet_map[y * (go->width / 16) + x]]++; | |
866b8695 | 434 | } |
0ee58f84 HV |
435 | } |
436 | motion_regions = ((motion[0] > 0) << 0) | | |
437 | ((motion[1] > 0) << 1) | | |
438 | ((motion[2] > 0) << 2) | | |
439 | ((motion[3] > 0) << 3); | |
440 | *bytesused -= 216; | |
441 | go7007_set_motion_regions(go, vb, motion_regions); | |
442 | } | |
443 | ||
444 | /* | |
445 | * Deliver the last video buffer and get a new one to start writing to. | |
446 | */ | |
447 | static struct go7007_buffer *frame_boundary(struct go7007 *go, struct go7007_buffer *vb) | |
448 | { | |
747598d5 | 449 | u32 *bytesused; |
0ee58f84 HV |
450 | struct go7007_buffer *vb_tmp = NULL; |
451 | ||
452 | if (vb == NULL) { | |
ffcc1c08 | 453 | spin_lock(&go->spinlock); |
0ee58f84 HV |
454 | if (!list_empty(&go->vidq_active)) |
455 | vb = go->active_buf = | |
456 | list_first_entry(&go->vidq_active, struct go7007_buffer, list); | |
ffcc1c08 | 457 | spin_unlock(&go->spinlock); |
0ee58f84 | 458 | go->next_seq++; |
ffcc1c08 | 459 | return vb; |
866b8695 | 460 | } |
2d700715 | 461 | bytesused = &vb->vb.vb2_buf.planes[0].bytesused; |
0ee58f84 | 462 | |
2d700715 | 463 | vb->vb.sequence = go->next_seq++; |
0ee58f84 HV |
464 | if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE) |
465 | go7007_motion_regions(go, vb); | |
466 | else | |
467 | go7007_set_motion_regions(go, vb, 0); | |
468 | ||
2d700715 | 469 | v4l2_get_timestamp(&vb->vb.timestamp); |
0ee58f84 | 470 | vb_tmp = vb; |
ffcc1c08 | 471 | spin_lock(&go->spinlock); |
0ee58f84 HV |
472 | list_del(&vb->list); |
473 | if (list_empty(&go->vidq_active)) | |
474 | vb = NULL; | |
475 | else | |
2d700715 JS |
476 | vb = list_first_entry(&go->vidq_active, |
477 | struct go7007_buffer, list); | |
0ee58f84 | 478 | go->active_buf = vb; |
ffcc1c08 | 479 | spin_unlock(&go->spinlock); |
2d700715 | 480 | vb2_buffer_done(&vb_tmp->vb.vb2_buf, VB2_BUF_STATE_DONE); |
ffcc1c08 | 481 | return vb; |
866b8695 GKH |
482 | } |
483 | ||
484 | static void write_bitmap_word(struct go7007 *go) | |
485 | { | |
486 | int x, y, i, stride = ((go->width >> 4) + 7) >> 3; | |
487 | ||
488 | for (i = 0; i < 16; ++i) { | |
489 | y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); | |
490 | x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); | |
a716e9d7 PE |
491 | if (stride * y + (x >> 3) < sizeof(go->active_map)) |
492 | go->active_map[stride * y + (x >> 3)] |= | |
866b8695 GKH |
493 | (go->modet_word & 1) << (x & 0x7); |
494 | go->modet_word >>= 1; | |
495 | } | |
496 | } | |
497 | ||
498 | /* | |
499 | * Parse a chunk of the video stream into frames. The frames are not | |
500 | * delimited by the hardware, so we have to parse the frame boundaries | |
501 | * based on the type of video stream we're receiving. | |
502 | */ | |
503 | void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) | |
504 | { | |
ffcc1c08 | 505 | struct go7007_buffer *vb = go->active_buf; |
ac41fa2a | 506 | int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1; |
866b8695 | 507 | |
866b8695 | 508 | switch (go->format) { |
35d2d76d | 509 | case V4L2_PIX_FMT_MPEG4: |
866b8695 | 510 | seq_start_code = 0xB0; |
ac41fa2a | 511 | gop_start_code = 0xB3; |
866b8695 GKH |
512 | frame_start_code = 0xB6; |
513 | break; | |
35d2d76d HV |
514 | case V4L2_PIX_FMT_MPEG1: |
515 | case V4L2_PIX_FMT_MPEG2: | |
866b8695 | 516 | seq_start_code = 0xB3; |
ac41fa2a | 517 | gop_start_code = 0xB8; |
866b8695 GKH |
518 | frame_start_code = 0x00; |
519 | break; | |
520 | } | |
521 | ||
522 | for (i = 0; i < length; ++i) { | |
2d700715 JS |
523 | if (vb && vb->vb.vb2_buf.planes[0].bytesused >= |
524 | GO7007_BUF_SIZE - 3) { | |
0b398f4f | 525 | v4l2_info(&go->v4l2_dev, "dropping oversized frame\n"); |
2d700715 | 526 | vb->vb.vb2_buf.planes[0].bytesused = 0; |
ffcc1c08 HV |
527 | vb->frame_offset = 0; |
528 | vb->modet_active = 0; | |
529 | vb = go->active_buf = NULL; | |
866b8695 GKH |
530 | } |
531 | ||
532 | switch (go->state) { | |
533 | case STATE_DATA: | |
534 | switch (buf[i]) { | |
535 | case 0x00: | |
536 | go->state = STATE_00; | |
537 | break; | |
538 | case 0xFF: | |
539 | go->state = STATE_FF; | |
540 | break; | |
541 | default: | |
ffcc1c08 | 542 | store_byte(vb, buf[i]); |
866b8695 GKH |
543 | break; |
544 | } | |
545 | break; | |
546 | case STATE_00: | |
547 | switch (buf[i]) { | |
548 | case 0x00: | |
549 | go->state = STATE_00_00; | |
550 | break; | |
551 | case 0xFF: | |
ffcc1c08 | 552 | store_byte(vb, 0x00); |
866b8695 GKH |
553 | go->state = STATE_FF; |
554 | break; | |
555 | default: | |
ffcc1c08 HV |
556 | store_byte(vb, 0x00); |
557 | store_byte(vb, buf[i]); | |
866b8695 GKH |
558 | go->state = STATE_DATA; |
559 | break; | |
560 | } | |
561 | break; | |
562 | case STATE_00_00: | |
563 | switch (buf[i]) { | |
564 | case 0x00: | |
ffcc1c08 | 565 | store_byte(vb, 0x00); |
866b8695 GKH |
566 | /* go->state remains STATE_00_00 */ |
567 | break; | |
568 | case 0x01: | |
569 | go->state = STATE_00_00_01; | |
570 | break; | |
571 | case 0xFF: | |
ffcc1c08 HV |
572 | store_byte(vb, 0x00); |
573 | store_byte(vb, 0x00); | |
866b8695 GKH |
574 | go->state = STATE_FF; |
575 | break; | |
576 | default: | |
ffcc1c08 HV |
577 | store_byte(vb, 0x00); |
578 | store_byte(vb, 0x00); | |
579 | store_byte(vb, buf[i]); | |
866b8695 GKH |
580 | go->state = STATE_DATA; |
581 | break; | |
582 | } | |
583 | break; | |
584 | case STATE_00_00_01: | |
a716e9d7 PE |
585 | if (buf[i] == 0xF8 && go->modet_enable == 0) { |
586 | /* MODET start code, but MODET not enabled */ | |
ffcc1c08 HV |
587 | store_byte(vb, 0x00); |
588 | store_byte(vb, 0x00); | |
589 | store_byte(vb, 0x01); | |
590 | store_byte(vb, 0xF8); | |
a716e9d7 PE |
591 | go->state = STATE_DATA; |
592 | break; | |
593 | } | |
866b8695 GKH |
594 | /* If this is the start of a new MPEG frame, |
595 | * get a new buffer */ | |
35d2d76d HV |
596 | if ((go->format == V4L2_PIX_FMT_MPEG1 || |
597 | go->format == V4L2_PIX_FMT_MPEG2 || | |
598 | go->format == V4L2_PIX_FMT_MPEG4) && | |
ffcc1c08 | 599 | (buf[i] == seq_start_code || |
ac41fa2a | 600 | buf[i] == gop_start_code || |
ffcc1c08 HV |
601 | buf[i] == frame_start_code)) { |
602 | if (vb == NULL || go->seen_frame) | |
603 | vb = frame_boundary(go, vb); | |
604 | go->seen_frame = buf[i] == frame_start_code; | |
605 | if (vb && go->seen_frame) | |
2d700715 JS |
606 | vb->frame_offset = |
607 | vb->vb.vb2_buf.planes[0].bytesused; | |
866b8695 GKH |
608 | } |
609 | /* Handle any special chunk types, or just write the | |
610 | * start code to the (potentially new) buffer */ | |
611 | switch (buf[i]) { | |
612 | case 0xF5: /* timestamp */ | |
613 | go->parse_length = 12; | |
614 | go->state = STATE_UNPARSED; | |
615 | break; | |
616 | case 0xF6: /* vbi */ | |
617 | go->state = STATE_VBI_LEN_A; | |
618 | break; | |
619 | case 0xF8: /* MD map */ | |
620 | go->parse_length = 0; | |
621 | memset(go->active_map, 0, | |
622 | sizeof(go->active_map)); | |
623 | go->state = STATE_MODET_MAP; | |
624 | break; | |
625 | case 0xFF: /* Potential JPEG start code */ | |
ffcc1c08 HV |
626 | store_byte(vb, 0x00); |
627 | store_byte(vb, 0x00); | |
628 | store_byte(vb, 0x01); | |
866b8695 GKH |
629 | go->state = STATE_FF; |
630 | break; | |
631 | default: | |
ffcc1c08 HV |
632 | store_byte(vb, 0x00); |
633 | store_byte(vb, 0x00); | |
634 | store_byte(vb, 0x01); | |
635 | store_byte(vb, buf[i]); | |
866b8695 GKH |
636 | go->state = STATE_DATA; |
637 | break; | |
638 | } | |
639 | break; | |
640 | case STATE_FF: | |
641 | switch (buf[i]) { | |
642 | case 0x00: | |
ffcc1c08 | 643 | store_byte(vb, 0xFF); |
866b8695 GKH |
644 | go->state = STATE_00; |
645 | break; | |
646 | case 0xFF: | |
ffcc1c08 | 647 | store_byte(vb, 0xFF); |
866b8695 GKH |
648 | /* go->state remains STATE_FF */ |
649 | break; | |
650 | case 0xD8: | |
35d2d76d | 651 | if (go->format == V4L2_PIX_FMT_MJPEG) |
ffcc1c08 | 652 | vb = frame_boundary(go, vb); |
866b8695 GKH |
653 | /* fall through */ |
654 | default: | |
ffcc1c08 HV |
655 | store_byte(vb, 0xFF); |
656 | store_byte(vb, buf[i]); | |
866b8695 GKH |
657 | go->state = STATE_DATA; |
658 | break; | |
659 | } | |
660 | break; | |
661 | case STATE_VBI_LEN_A: | |
662 | go->parse_length = buf[i] << 8; | |
663 | go->state = STATE_VBI_LEN_B; | |
664 | break; | |
665 | case STATE_VBI_LEN_B: | |
666 | go->parse_length |= buf[i]; | |
667 | if (go->parse_length > 0) | |
668 | go->state = STATE_UNPARSED; | |
669 | else | |
670 | go->state = STATE_DATA; | |
671 | break; | |
672 | case STATE_MODET_MAP: | |
673 | if (go->parse_length < 204) { | |
674 | if (go->parse_length & 1) { | |
675 | go->modet_word |= buf[i]; | |
676 | write_bitmap_word(go); | |
677 | } else | |
678 | go->modet_word = buf[i] << 8; | |
ffcc1c08 HV |
679 | } else if (go->parse_length == 207 && vb) { |
680 | vb->modet_active = buf[i]; | |
866b8695 GKH |
681 | } |
682 | if (++go->parse_length == 208) | |
683 | go->state = STATE_DATA; | |
684 | break; | |
685 | case STATE_UNPARSED: | |
686 | if (--go->parse_length == 0) | |
687 | go->state = STATE_DATA; | |
688 | break; | |
689 | } | |
690 | } | |
866b8695 GKH |
691 | } |
692 | EXPORT_SYMBOL(go7007_parse_video_stream); | |
693 | ||
694 | /* | |
695 | * Allocate a new go7007 struct. Used by the hardware-specific probe. | |
696 | */ | |
0a6ecbb4 HV |
697 | struct go7007 *go7007_alloc(const struct go7007_board_info *board, |
698 | struct device *dev) | |
866b8695 GKH |
699 | { |
700 | struct go7007 *go; | |
701 | int i; | |
702 | ||
61a2353c | 703 | go = kzalloc(sizeof(struct go7007), GFP_KERNEL); |
866b8695 GKH |
704 | if (go == NULL) |
705 | return NULL; | |
706 | go->dev = dev; | |
707 | go->board_info = board; | |
708 | go->board_id = 0; | |
709 | go->tuner_type = -1; | |
710 | go->channel_number = 0; | |
711 | go->name[0] = 0; | |
fd9a40da | 712 | mutex_init(&go->hw_lock); |
866b8695 GKH |
713 | init_waitqueue_head(&go->frame_waitq); |
714 | spin_lock_init(&go->spinlock); | |
866b8695 GKH |
715 | go->status = STATUS_INIT; |
716 | memset(&go->i2c_adapter, 0, sizeof(go->i2c_adapter)); | |
717 | go->i2c_adapter_online = 0; | |
718 | go->interrupt_available = 0; | |
719 | init_waitqueue_head(&go->interrupt_waitq); | |
866b8695 | 720 | go->input = 0; |
50deb749 | 721 | go7007_update_board(go); |
866b8695 GKH |
722 | go->encoder_h_halve = 0; |
723 | go->encoder_v_halve = 0; | |
724 | go->encoder_subsample = 0; | |
35d2d76d | 725 | go->format = V4L2_PIX_FMT_MJPEG; |
866b8695 GKH |
726 | go->bitrate = 1500000; |
727 | go->fps_scale = 1; | |
728 | go->pali = 0; | |
729 | go->aspect_ratio = GO7007_RATIO_1_1; | |
730 | go->gop_size = 0; | |
731 | go->ipb = 0; | |
732 | go->closed_gop = 0; | |
733 | go->repeat_seqhead = 0; | |
734 | go->seq_header_enable = 0; | |
735 | go->gop_header_enable = 0; | |
736 | go->dvd_mode = 0; | |
737 | go->interlace_coding = 0; | |
738 | for (i = 0; i < 4; ++i) | |
859171ca | 739 | go->modet[i].enable = 0; |
866b8695 GKH |
740 | for (i = 0; i < 1624; ++i) |
741 | go->modet_map[i] = 0; | |
742 | go->audio_deliver = NULL; | |
743 | go->audio_enabled = 0; | |
866b8695 GKH |
744 | |
745 | return go; | |
746 | } | |
747 | EXPORT_SYMBOL(go7007_alloc); | |
748 | ||
50deb749 HV |
749 | void go7007_update_board(struct go7007 *go) |
750 | { | |
0a6ecbb4 | 751 | const struct go7007_board_info *board = go->board_info; |
50deb749 HV |
752 | |
753 | if (board->sensor_flags & GO7007_SENSOR_TV) { | |
754 | go->standard = GO7007_STD_NTSC; | |
755 | go->std = V4L2_STD_NTSC_M; | |
756 | go->width = 720; | |
757 | go->height = 480; | |
758 | go->sensor_framerate = 30000; | |
759 | } else { | |
760 | go->standard = GO7007_STD_OTHER; | |
761 | go->width = board->sensor_width; | |
762 | go->height = board->sensor_height; | |
763 | go->sensor_framerate = board->sensor_framerate; | |
764 | } | |
765 | go->encoder_v_offset = board->sensor_v_offset; | |
766 | go->encoder_h_offset = board->sensor_h_offset; | |
767 | } | |
768 | EXPORT_SYMBOL(go7007_update_board); | |
769 | ||
866b8695 | 770 | MODULE_LICENSE("GPL v2"); |