1 /****************************************************************************
2 *
3 * Filename: cpia2.h
4 *
5 * Copyright 2001, STMicrolectronics, Inc.
6 *
7 * Contact: steve.miller@st.com
8 *
9 * Description:
10 * This is a USB driver for CPiA2 based video cameras.
11 *
12 * This driver is modelled on the cpia usb driver by
13 * Jochen Scharrlach and Johannes Erdfeldt.
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 *
29 ****************************************************************************/
30
31 #ifndef __CPIA2_H__
32 #define __CPIA2_H__
33
34 #include <linux/version.h>
35 #include <linux/videodev.h>
36 #include <media/v4l2-common.h>
37 #include <linux/usb.h>
38 #include <linux/poll.h>
39
40 #include "cpia2dev.h"
41 #include "cpia2_registers.h"
42
43 /* define for verbose debug output */
44 //#define _CPIA2_DEBUG_
45
46 #define CPIA2_MAJ_VER 2
47 #define CPIA2_MIN_VER 0
48 #define CPIA2_PATCH_VER 0
49
50 /***
51 * Image defines
52 ***/
53
54 /* Misc constants */
55 #define ALLOW_CORRUPT 0 /* Causes collater to discard checksum */
56
57 /* USB Transfer mode */
58 #define XFER_ISOC 0
59 #define XFER_BULK 1
60
61 /* USB Alternates */
62 #define USBIF_CMDONLY 0
63 #define USBIF_BULK 1
64 #define USBIF_ISO_1 2 /* 128 bytes/ms */
65 #define USBIF_ISO_2 3 /* 384 bytes/ms */
66 #define USBIF_ISO_3 4 /* 640 bytes/ms */
67 #define USBIF_ISO_4 5 /* 768 bytes/ms */
68 #define USBIF_ISO_5 6 /* 896 bytes/ms */
69 #define USBIF_ISO_6 7 /* 1023 bytes/ms */
70
71 /* Flicker Modes */
72 #define NEVER_FLICKER 0
73 #define ANTI_FLICKER_ON 1
74 #define FLICKER_60 60
75 #define FLICKER_50 50
76
77 /* Debug flags */
78 #define DEBUG_NONE 0
79 #define DEBUG_REG 0x00000001
80 #define DEBUG_DUMP_PATCH 0x00000002
81 #define DEBUG_DUMP_REGS 0x00000004
82
83 /***
84 * Video frame sizes
85 ***/
86 enum {
87 VIDEOSIZE_VGA = 0, /* 640x480 */
88 VIDEOSIZE_CIF, /* 352x288 */
89 VIDEOSIZE_QVGA, /* 320x240 */
90 VIDEOSIZE_QCIF, /* 176x144 */
91 VIDEOSIZE_288_216,
92 VIDEOSIZE_256_192,
93 VIDEOSIZE_224_168,
94 VIDEOSIZE_192_144,
95 };
96
97 #define STV_IMAGE_CIF_ROWS 288
98 #define STV_IMAGE_CIF_COLS 352
99
100 #define STV_IMAGE_QCIF_ROWS 144
101 #define STV_IMAGE_QCIF_COLS 176
102
103 #define STV_IMAGE_VGA_ROWS 480
104 #define STV_IMAGE_VGA_COLS 640
105
106 #define STV_IMAGE_QVGA_ROWS 240
107 #define STV_IMAGE_QVGA_COLS 320
108
109 #define JPEG_MARKER_COM (1<<6) /* Comment segment */
110
111 /***
112 * Enums
113 ***/
114 /* Sensor types available with cpia2 asics */
115 enum sensors {
116 CPIA2_SENSOR_410,
117 CPIA2_SENSOR_500
118 };
119
120 /* Asic types available in the CPiA2 architecture */
121 #define CPIA2_ASIC_672 0x67
122
123 /* Device types (stv672, stv676, etc) */
124 #define DEVICE_STV_672 0x0001
125 #define DEVICE_STV_676 0x0002
126
127 enum frame_status {
128 FRAME_EMPTY,
129 FRAME_READING, /* In the process of being grabbed into */
130 FRAME_READY, /* Ready to be read */
131 FRAME_ERROR,
132 };
133
134 /***
135 * Register access (for USB request byte)
136 ***/
137 enum {
138 CAMERAACCESS_SYSTEM = 0,
139 CAMERAACCESS_VC,
140 CAMERAACCESS_VP,
141 CAMERAACCESS_IDATA
142 };
143
144 #define CAMERAACCESS_TYPE_BLOCK 0x00
145 #define CAMERAACCESS_TYPE_RANDOM 0x04
146 #define CAMERAACCESS_TYPE_MASK 0x08
147 #define CAMERAACCESS_TYPE_REPEAT 0x0C
148
149 #define TRANSFER_READ 0
150 #define TRANSFER_WRITE 1
151
152 #define DEFAULT_ALT USBIF_ISO_6
153 #define DEFAULT_BRIGHTNESS 0x46
154 #define DEFAULT_CONTRAST 0x93
155 #define DEFAULT_SATURATION 0x7f
156 #define DEFAULT_TARGET_KB 0x30
157
158 /* Power state */
159 #define HI_POWER_MODE CPIA2_SYSTEM_CONTROL_HIGH_POWER
160 #define LO_POWER_MODE CPIA2_SYSTEM_CONTROL_LOW_POWER
161
162
163 /********
164 * Commands
165 *******/
166 enum {
167 CPIA2_CMD_NONE = 0,
168 CPIA2_CMD_GET_VERSION,
169 CPIA2_CMD_GET_PNP_ID,
170 CPIA2_CMD_GET_ASIC_TYPE,
171 CPIA2_CMD_GET_SENSOR,
172 CPIA2_CMD_GET_VP_DEVICE,
173 CPIA2_CMD_GET_VP_BRIGHTNESS,
174 CPIA2_CMD_SET_VP_BRIGHTNESS,
175 CPIA2_CMD_GET_CONTRAST,
176 CPIA2_CMD_SET_CONTRAST,
177 CPIA2_CMD_GET_VP_SATURATION,
178 CPIA2_CMD_SET_VP_SATURATION,
179 CPIA2_CMD_GET_VP_GPIO_DIRECTION,
180 CPIA2_CMD_SET_VP_GPIO_DIRECTION,
181 CPIA2_CMD_GET_VP_GPIO_DATA,
182 CPIA2_CMD_SET_VP_GPIO_DATA,
183 CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION,
184 CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
185 CPIA2_CMD_GET_VC_MP_GPIO_DATA,
186 CPIA2_CMD_SET_VC_MP_GPIO_DATA,
187 CPIA2_CMD_ENABLE_PACKET_CTRL,
188 CPIA2_CMD_GET_FLICKER_MODES,
189 CPIA2_CMD_SET_FLICKER_MODES,
190 CPIA2_CMD_RESET_FIFO, /* clear fifo and enable stream block */
191 CPIA2_CMD_SET_HI_POWER,
192 CPIA2_CMD_SET_LOW_POWER,
193 CPIA2_CMD_CLEAR_V2W_ERR,
194 CPIA2_CMD_SET_USER_MODE,
195 CPIA2_CMD_GET_USER_MODE,
196 CPIA2_CMD_FRAMERATE_REQ,
197 CPIA2_CMD_SET_COMPRESSION_STATE,
198 CPIA2_CMD_GET_WAKEUP,
199 CPIA2_CMD_SET_WAKEUP,
200 CPIA2_CMD_GET_PW_CONTROL,
201 CPIA2_CMD_SET_PW_CONTROL,
202 CPIA2_CMD_GET_SYSTEM_CTRL,
203 CPIA2_CMD_SET_SYSTEM_CTRL,
204 CPIA2_CMD_GET_VP_SYSTEM_STATE,
205 CPIA2_CMD_GET_VP_SYSTEM_CTRL,
206 CPIA2_CMD_SET_VP_SYSTEM_CTRL,
207 CPIA2_CMD_GET_VP_EXP_MODES,
208 CPIA2_CMD_SET_VP_EXP_MODES,
209 CPIA2_CMD_GET_DEVICE_CONFIG,
210 CPIA2_CMD_SET_DEVICE_CONFIG,
211 CPIA2_CMD_SET_SERIAL_ADDR,
212 CPIA2_CMD_SET_SENSOR_CR1,
213 CPIA2_CMD_GET_VC_CONTROL,
214 CPIA2_CMD_SET_VC_CONTROL,
215 CPIA2_CMD_SET_TARGET_KB,
216 CPIA2_CMD_SET_DEF_JPEG_OPT,
217 CPIA2_CMD_REHASH_VP4,
218 CPIA2_CMD_GET_USER_EFFECTS,
219 CPIA2_CMD_SET_USER_EFFECTS
220 };
221
222 enum user_cmd {
223 COMMAND_NONE = 0x00000001,
224 COMMAND_SET_FPS = 0x00000002,
225 COMMAND_SET_COLOR_PARAMS = 0x00000004,
226 COMMAND_GET_COLOR_PARAMS = 0x00000008,
227 COMMAND_SET_FORMAT = 0x00000010, /* size, etc */
228 COMMAND_SET_FLICKER = 0x00000020
229 };
230
231 /***
232 * Some defines specific to the 676 chip
233 ***/
234 #define CAMACC_CIF 0x01
235 #define CAMACC_VGA 0x02
236 #define CAMACC_QCIF 0x04
237 #define CAMACC_QVGA 0x08
238
239
240 struct cpia2_register {
241 u8 index;
242 u8 value;
243 };
244
245 struct cpia2_reg_mask {
246 u8 index;
247 u8 and_mask;
248 u8 or_mask;
249 u8 fill;
250 };
251
252 struct cpia2_command {
253 u32 command;
254 u8 req_mode; /* (Block or random) | registerBank */
255 u8 reg_count;
256 u8 direction;
257 u8 start;
258 union reg_types {
259 struct cpia2_register registers[32];
260 struct cpia2_reg_mask masks[16];
261 u8 block_data[64];
262 u8 *patch_data; /* points to function defined block */
263 } buffer;
264 };
265
266 struct camera_params {
267 struct {
268 u8 firmware_revision_hi; /* For system register set (bank 0) */
269 u8 firmware_revision_lo;
270 u8 asic_id; /* Video Compressor set (bank 1) */
271 u8 asic_rev;
272 u8 vp_device_hi; /* Video Processor set (bank 2) */
273 u8 vp_device_lo;
274 u8 sensor_flags;
275 u8 sensor_rev;
276 } version;
277
278 struct {
279 u32 device_type; /* enumerated from vendor/product ids.
280 * Currently, either STV_672 or STV_676 */
281 u16 vendor;
282 u16 product;
283 u16 device_revision;
284 } pnp_id;
285
286 struct {
287 u8 brightness; /* CPIA2_VP_EXPOSURE_TARGET */
288 u8 contrast; /* Note: this is CPIA2_VP_YRANGE */
289 u8 saturation; /* CPIA2_VP_SATURATION */
290 } color_params;
291
292 struct {
293 u8 cam_register;
294 u8 flicker_mode_req; /* 1 if flicker on, else never flicker */
295 int mains_frequency;
296 } flicker_control;
297
298 struct {
299 u8 jpeg_options;
300 u8 creep_period;
301 u8 user_squeeze;
302 u8 inhibit_htables;
303 } compression;
304
305 struct {
306 u8 ohsize; /* output image size */
307 u8 ovsize;
308 u8 hcrop; /* cropping start_pos/4 */
309 u8 vcrop;
310 u8 hphase; /* scaling registers */
311 u8 vphase;
312 u8 hispan;
313 u8 vispan;
314 u8 hicrop;
315 u8 vicrop;
316 u8 hifraction;
317 u8 vifraction;
318 } image_size;
319
320 struct {
321 int width; /* actual window width */
322 int height; /* actual window height */
323 } roi;
324
325 struct {
326 u8 video_mode;
327 u8 frame_rate;
328 u8 video_size; /* Not a register, just a convenience for cropped sizes */
329 u8 gpio_direction;
330 u8 gpio_data;
331 u8 system_ctrl;
332 u8 system_state;
333 u8 lowlight_boost; /* Bool: 0 = off, 1 = on */
334 u8 device_config;
335 u8 exposure_modes;
336 u8 user_effects;
337 } vp_params;
338
339 struct {
340 u8 pw_control;
341 u8 wakeup;
342 u8 vc_control;
343 u8 vc_mp_direction;
344 u8 vc_mp_data;
345 u8 target_kb;
346 } vc_params;
347
348 struct {
349 u8 power_mode;
350 u8 system_ctrl;
351 u8 stream_mode; /* This is the current alternate for usb drivers */
352 u8 allow_corrupt;
353 } camera_state;
354 };
355
356 #define NUM_SBUF 2
357
358 struct cpia2_sbuf {
359 char *data;
360 struct urb *urb;
361 };
362
363 struct framebuf {
364 struct timeval timestamp;
365 unsigned long seq;
366 int num;
367 int length;
368 int max_length;
369 volatile enum frame_status status;
370 u8 *data;
371 struct framebuf *next;
372 };
373
374 struct cpia2_fh {
375 enum v4l2_priority prio;
376 u8 mmapped;
377 };
378
379 struct camera_data {
380 /* locks */
381 struct mutex busy_lock; /* guard against SMP multithreading */
382 struct v4l2_prio_state prio;
383
384 /* camera status */
385 volatile int present; /* Is the camera still present? */
386 int open_count; /* # of process that have camera open */
387 int first_image_seen;
388 u8 mains_freq; /* for flicker control */
389 enum sensors sensor_type;
390 u8 flush;
391 u8 mmapped;
392 int streaming; /* 0 = no, 1 = yes */
393 int xfer_mode; /* XFER_BULK or XFER_ISOC */
394 struct camera_params params; /* camera settings */
395
396 /* v4l */
397 int video_size; /* VIDEO_SIZE_ */
398 struct video_device *vdev; /* v4l videodev */
399 struct video_picture vp; /* v4l camera settings */
400 struct video_window vw; /* v4l capture area */
401 __u32 pixelformat; /* Format fourcc */
402
403 /* USB */
404 struct usb_device *dev;
405 unsigned char iface;
406 unsigned int cur_alt;
407 unsigned int old_alt;
408 struct cpia2_sbuf sbuf[NUM_SBUF]; /* Double buffering */
409
410 wait_queue_head_t wq_stream;
411
412 /* Buffering */
413 u32 frame_size;
414 int num_frames;
415 unsigned long frame_count;
416 u8 *frame_buffer; /* frame buffer data */
417 struct framebuf *buffers;
418 struct framebuf * volatile curbuff;
419 struct framebuf *workbuff;
420
421 /* MJPEG Extension */
422 int APPn; /* Number of APP segment to be written, must be 0..15 */
423 int APP_len; /* Length of data in JPEG APPn segment */
424 char APP_data[60]; /* Data in the JPEG APPn segment. */
425
426 int COM_len; /* Length of data in JPEG COM segment */
427 char COM_data[60]; /* Data in JPEG COM segment */
428 };
429
430 /* v4l */
431 int cpia2_register_camera(struct camera_data *cam);
432 void cpia2_unregister_camera(struct camera_data *cam);
433
434 /* core */
435 int cpia2_reset_camera(struct camera_data *cam);
436 int cpia2_set_low_power(struct camera_data *cam);
437 void cpia2_dbg_dump_registers(struct camera_data *cam);
438 int cpia2_match_video_size(int width, int height);
439 void cpia2_set_camera_state(struct camera_data *cam);
440 void cpia2_save_camera_state(struct camera_data *cam);
441 void cpia2_set_color_params(struct camera_data *cam);
442 void cpia2_set_brightness(struct camera_data *cam, unsigned char value);
443 void cpia2_set_contrast(struct camera_data *cam, unsigned char value);
444 void cpia2_set_saturation(struct camera_data *cam, unsigned char value);
445 int cpia2_set_flicker_mode(struct camera_data *cam, int mode);
446 void cpia2_set_format(struct camera_data *cam);
447 int cpia2_send_command(struct camera_data *cam, struct cpia2_command *cmd);
448 int cpia2_do_command(struct camera_data *cam,
449 unsigned int command,
450 unsigned char direction, unsigned char param);
451 struct camera_data *cpia2_init_camera_struct(void);
452 int cpia2_init_camera(struct camera_data *cam);
453 int cpia2_allocate_buffers(struct camera_data *cam);
454 void cpia2_free_buffers(struct camera_data *cam);
455 long cpia2_read(struct camera_data *cam,
456 char __user *buf, unsigned long count, int noblock);
457 unsigned int cpia2_poll(struct camera_data *cam,
458 struct file *filp, poll_table *wait);
459 int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma);
460 void cpia2_set_property_flip(struct camera_data *cam, int prop_val);
461 void cpia2_set_property_mirror(struct camera_data *cam, int prop_val);
462 int cpia2_set_target_kb(struct camera_data *cam, unsigned char value);
463 int cpia2_set_gpio(struct camera_data *cam, unsigned char setting);
464 int cpia2_set_fps(struct camera_data *cam, int framerate);
465
466 /* usb */
467 int cpia2_usb_init(void);
468 void cpia2_usb_cleanup(void);
469 int cpia2_usb_transfer_cmd(struct camera_data *cam, void *registers,
470 u8 request, u8 start, u8 count, u8 direction);
471 int cpia2_usb_stream_start(struct camera_data *cam, unsigned int alternate);
472 int cpia2_usb_stream_stop(struct camera_data *cam);
473 int cpia2_usb_stream_pause(struct camera_data *cam);
474 int cpia2_usb_stream_resume(struct camera_data *cam);
475 int cpia2_usb_change_streaming_alternate(struct camera_data *cam,
476 unsigned int alt);
477
478
479 /* ----------------------- debug functions ---------------------- */
480 #ifdef _CPIA2_DEBUG_
481 #define ALOG(lev, fmt, args...) printk(lev "%s:%d %s(): " fmt, __FILE__, __LINE__, __func__, ## args)
482 #define LOG(fmt, args...) ALOG(KERN_INFO, fmt, ## args)
483 #define ERR(fmt, args...) ALOG(KERN_ERR, fmt, ## args)
484 #define DBG(fmt, args...) ALOG(KERN_DEBUG, fmt, ## args)
485 #else
486 #define ALOG(fmt,args...) printk(fmt,##args)
487 #define LOG(fmt,args...) ALOG(KERN_INFO "cpia2: "fmt,##args)
488 #define ERR(fmt,args...) ALOG(KERN_ERR "cpia2: "fmt,##args)
489 #define DBG(fmn,args...) do {} while(0)
490 #endif
491 /* No function or lineno, for shorter lines */
492 #define KINFO(fmt, args...) printk(KERN_INFO fmt,##args)
493
494 #endif
495
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