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/videodev2.h> 35 #include <media/v4l2-common.h> 36 #include <linux/usb.h> 37 #include <linux/poll.h> 38 39 #include "cpia2dev.h" 40 #include "cpia2_registers.h" 41 42 /* define for verbose debug output */ 43 //#define _CPIA2_DEBUG_ 44 45 /*** 46 * Image defines 47 ***/ 48 49 /* Misc constants */ 50 #define ALLOW_CORRUPT 0 /* Causes collater to discard checksum */ 51 52 /* USB Transfer mode */ 53 #define XFER_ISOC 0 54 #define XFER_BULK 1 55 56 /* USB Alternates */ 57 #define USBIF_CMDONLY 0 58 #define USBIF_BULK 1 59 #define USBIF_ISO_1 2 /* 128 bytes/ms */ 60 #define USBIF_ISO_2 3 /* 384 bytes/ms */ 61 #define USBIF_ISO_3 4 /* 640 bytes/ms */ 62 #define USBIF_ISO_4 5 /* 768 bytes/ms */ 63 #define USBIF_ISO_5 6 /* 896 bytes/ms */ 64 #define USBIF_ISO_6 7 /* 1023 bytes/ms */ 65 66 /* Flicker Modes */ 67 #define NEVER_FLICKER 0 68 #define ANTI_FLICKER_ON 1 69 #define FLICKER_60 60 70 #define FLICKER_50 50 71 72 /* Debug flags */ 73 #define DEBUG_NONE 0 74 #define DEBUG_REG 0x00000001 75 #define DEBUG_DUMP_PATCH 0x00000002 76 #define DEBUG_DUMP_REGS 0x00000004 77 78 /*** 79 * Video frame sizes 80 ***/ 81 enum { 82 VIDEOSIZE_VGA = 0, /* 640x480 */ 83 VIDEOSIZE_CIF, /* 352x288 */ 84 VIDEOSIZE_QVGA, /* 320x240 */ 85 VIDEOSIZE_QCIF, /* 176x144 */ 86 VIDEOSIZE_288_216, 87 VIDEOSIZE_256_192, 88 VIDEOSIZE_224_168, 89 VIDEOSIZE_192_144, 90 }; 91 92 #define STV_IMAGE_CIF_ROWS 288 93 #define STV_IMAGE_CIF_COLS 352 94 95 #define STV_IMAGE_QCIF_ROWS 144 96 #define STV_IMAGE_QCIF_COLS 176 97 98 #define STV_IMAGE_VGA_ROWS 480 99 #define STV_IMAGE_VGA_COLS 640 100 101 #define STV_IMAGE_QVGA_ROWS 240 102 #define STV_IMAGE_QVGA_COLS 320 103 104 #define JPEG_MARKER_COM (1<<6) /* Comment segment */ 105 106 /*** 107 * Enums 108 ***/ 109 /* Sensor types available with cpia2 asics */ 110 enum sensors { 111 CPIA2_SENSOR_410, 112 CPIA2_SENSOR_500 113 }; 114 115 /* Asic types available in the CPiA2 architecture */ 116 #define CPIA2_ASIC_672 0x67 117 118 /* Device types (stv672, stv676, etc) */ 119 #define DEVICE_STV_672 0x0001 120 #define DEVICE_STV_676 0x0002 121 122 enum frame_status { 123 FRAME_EMPTY, 124 FRAME_READING, /* In the process of being grabbed into */ 125 FRAME_READY, /* Ready to be read */ 126 FRAME_ERROR, 127 }; 128 129 /*** 130 * Register access (for USB request byte) 131 ***/ 132 enum { 133 CAMERAACCESS_SYSTEM = 0, 134 CAMERAACCESS_VC, 135 CAMERAACCESS_VP, 136 CAMERAACCESS_IDATA 137 }; 138 139 #define CAMERAACCESS_TYPE_BLOCK 0x00 140 #define CAMERAACCESS_TYPE_RANDOM 0x04 141 #define CAMERAACCESS_TYPE_MASK 0x08 142 #define CAMERAACCESS_TYPE_REPEAT 0x0C 143 144 #define TRANSFER_READ 0 145 #define TRANSFER_WRITE 1 146 147 #define DEFAULT_ALT USBIF_ISO_6 148 #define DEFAULT_BRIGHTNESS 0x46 149 #define DEFAULT_CONTRAST 0x93 150 #define DEFAULT_SATURATION 0x7f 151 #define DEFAULT_TARGET_KB 0x30 152 153 /* Power state */ 154 #define HI_POWER_MODE CPIA2_SYSTEM_CONTROL_HIGH_POWER 155 #define LO_POWER_MODE CPIA2_SYSTEM_CONTROL_LOW_POWER 156 157 158 /******** 159 * Commands 160 *******/ 161 enum { 162 CPIA2_CMD_NONE = 0, 163 CPIA2_CMD_GET_VERSION, 164 CPIA2_CMD_GET_PNP_ID, 165 CPIA2_CMD_GET_ASIC_TYPE, 166 CPIA2_CMD_GET_SENSOR, 167 CPIA2_CMD_GET_VP_DEVICE, 168 CPIA2_CMD_GET_VP_BRIGHTNESS, 169 CPIA2_CMD_SET_VP_BRIGHTNESS, 170 CPIA2_CMD_GET_CONTRAST, 171 CPIA2_CMD_SET_CONTRAST, 172 CPIA2_CMD_GET_VP_SATURATION, 173 CPIA2_CMD_SET_VP_SATURATION, 174 CPIA2_CMD_GET_VP_GPIO_DIRECTION, 175 CPIA2_CMD_SET_VP_GPIO_DIRECTION, 176 CPIA2_CMD_GET_VP_GPIO_DATA, 177 CPIA2_CMD_SET_VP_GPIO_DATA, 178 CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION, 179 CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION, 180 CPIA2_CMD_GET_VC_MP_GPIO_DATA, 181 CPIA2_CMD_SET_VC_MP_GPIO_DATA, 182 CPIA2_CMD_ENABLE_PACKET_CTRL, 183 CPIA2_CMD_GET_FLICKER_MODES, 184 CPIA2_CMD_SET_FLICKER_MODES, 185 CPIA2_CMD_RESET_FIFO, /* clear fifo and enable stream block */ 186 CPIA2_CMD_SET_HI_POWER, 187 CPIA2_CMD_SET_LOW_POWER, 188 CPIA2_CMD_CLEAR_V2W_ERR, 189 CPIA2_CMD_SET_USER_MODE, 190 CPIA2_CMD_GET_USER_MODE, 191 CPIA2_CMD_FRAMERATE_REQ, 192 CPIA2_CMD_SET_COMPRESSION_STATE, 193 CPIA2_CMD_GET_WAKEUP, 194 CPIA2_CMD_SET_WAKEUP, 195 CPIA2_CMD_GET_PW_CONTROL, 196 CPIA2_CMD_SET_PW_CONTROL, 197 CPIA2_CMD_GET_SYSTEM_CTRL, 198 CPIA2_CMD_SET_SYSTEM_CTRL, 199 CPIA2_CMD_GET_VP_SYSTEM_STATE, 200 CPIA2_CMD_GET_VP_SYSTEM_CTRL, 201 CPIA2_CMD_SET_VP_SYSTEM_CTRL, 202 CPIA2_CMD_GET_VP_EXP_MODES, 203 CPIA2_CMD_SET_VP_EXP_MODES, 204 CPIA2_CMD_GET_DEVICE_CONFIG, 205 CPIA2_CMD_SET_DEVICE_CONFIG, 206 CPIA2_CMD_SET_SERIAL_ADDR, 207 CPIA2_CMD_SET_SENSOR_CR1, 208 CPIA2_CMD_GET_VC_CONTROL, 209 CPIA2_CMD_SET_VC_CONTROL, 210 CPIA2_CMD_SET_TARGET_KB, 211 CPIA2_CMD_SET_DEF_JPEG_OPT, 212 CPIA2_CMD_REHASH_VP4, 213 CPIA2_CMD_GET_USER_EFFECTS, 214 CPIA2_CMD_SET_USER_EFFECTS 215 }; 216 217 enum user_cmd { 218 COMMAND_NONE = 0x00000001, 219 COMMAND_SET_FPS = 0x00000002, 220 COMMAND_SET_COLOR_PARAMS = 0x00000004, 221 COMMAND_GET_COLOR_PARAMS = 0x00000008, 222 COMMAND_SET_FORMAT = 0x00000010, /* size, etc */ 223 COMMAND_SET_FLICKER = 0x00000020 224 }; 225 226 /*** 227 * Some defines specific to the 676 chip 228 ***/ 229 #define CAMACC_CIF 0x01 230 #define CAMACC_VGA 0x02 231 #define CAMACC_QCIF 0x04 232 #define CAMACC_QVGA 0x08 233 234 235 struct cpia2_register { 236 u8 index; 237 u8 value; 238 }; 239 240 struct cpia2_reg_mask { 241 u8 index; 242 u8 and_mask; 243 u8 or_mask; 244 u8 fill; 245 }; 246 247 struct cpia2_command { 248 u32 command; 249 u8 req_mode; /* (Block or random) | registerBank */ 250 u8 reg_count; 251 u8 direction; 252 u8 start; 253 union reg_types { 254 struct cpia2_register registers[32]; 255 struct cpia2_reg_mask masks[16]; 256 u8 block_data[64]; 257 u8 *patch_data; /* points to function defined block */ 258 } buffer; 259 }; 260 261 struct camera_params { 262 struct { 263 u8 firmware_revision_hi; /* For system register set (bank 0) */ 264 u8 firmware_revision_lo; 265 u8 asic_id; /* Video Compressor set (bank 1) */ 266 u8 asic_rev; 267 u8 vp_device_hi; /* Video Processor set (bank 2) */ 268 u8 vp_device_lo; 269 u8 sensor_flags; 270 u8 sensor_rev; 271 } version; 272 273 struct { 274 u32 device_type; /* enumerated from vendor/product ids. 275 * Currently, either STV_672 or STV_676 */ 276 u16 vendor; 277 u16 product; 278 u16 device_revision; 279 } pnp_id; 280 281 struct { 282 u8 brightness; /* CPIA2_VP_EXPOSURE_TARGET */ 283 u8 contrast; /* Note: this is CPIA2_VP_YRANGE */ 284 u8 saturation; /* CPIA2_VP_SATURATION */ 285 } color_params; 286 287 struct { 288 u8 cam_register; 289 u8 flicker_mode_req; /* 1 if flicker on, else never flicker */ 290 int mains_frequency; 291 } flicker_control; 292 293 struct { 294 u8 jpeg_options; 295 u8 creep_period; 296 u8 user_squeeze; 297 u8 inhibit_htables; 298 } compression; 299 300 struct { 301 u8 ohsize; /* output image size */ 302 u8 ovsize; 303 u8 hcrop; /* cropping start_pos/4 */ 304 u8 vcrop; 305 u8 hphase; /* scaling registers */ 306 u8 vphase; 307 u8 hispan; 308 u8 vispan; 309 u8 hicrop; 310 u8 vicrop; 311 u8 hifraction; 312 u8 vifraction; 313 } image_size; 314 315 struct { 316 int width; /* actual window width */ 317 int height; /* actual window height */ 318 } roi; 319 320 struct { 321 u8 video_mode; 322 u8 frame_rate; 323 u8 video_size; /* Not a register, just a convenience for cropped sizes */ 324 u8 gpio_direction; 325 u8 gpio_data; 326 u8 system_ctrl; 327 u8 system_state; 328 u8 lowlight_boost; /* Bool: 0 = off, 1 = on */ 329 u8 device_config; 330 u8 exposure_modes; 331 u8 user_effects; 332 } vp_params; 333 334 struct { 335 u8 pw_control; 336 u8 wakeup; 337 u8 vc_control; 338 u8 vc_mp_direction; 339 u8 vc_mp_data; 340 u8 target_kb; 341 } vc_params; 342 343 struct { 344 u8 power_mode; 345 u8 system_ctrl; 346 u8 stream_mode; /* This is the current alternate for usb drivers */ 347 u8 allow_corrupt; 348 } camera_state; 349 }; 350 351 #define NUM_SBUF 2 352 353 struct cpia2_sbuf { 354 char *data; 355 struct urb *urb; 356 }; 357 358 struct framebuf { 359 struct timeval timestamp; 360 unsigned long seq; 361 int num; 362 int length; 363 int max_length; 364 volatile enum frame_status status; 365 u8 *data; 366 struct framebuf *next; 367 }; 368 369 struct cpia2_fh { 370 enum v4l2_priority prio; 371 u8 mmapped; 372 }; 373 374 struct camera_data { 375 /* locks */ 376 struct mutex v4l2_lock; /* serialize file operations */ 377 struct v4l2_prio_state prio; 378 379 /* camera status */ 380 volatile int present; /* Is the camera still present? */ 381 int open_count; /* # of process that have camera open */ 382 int first_image_seen; 383 u8 mains_freq; /* for flicker control */ 384 enum sensors sensor_type; 385 u8 flush; 386 u8 mmapped; 387 int streaming; /* 0 = no, 1 = yes */ 388 int xfer_mode; /* XFER_BULK or XFER_ISOC */ 389 struct camera_params params; /* camera settings */ 390 391 /* v4l */ 392 int video_size; /* VIDEO_SIZE_ */ 393 struct video_device *vdev; /* v4l videodev */ 394 u32 width; 395 u32 height; /* Its size */ 396 __u32 pixelformat; /* Format fourcc */ 397 398 /* USB */ 399 struct usb_device *dev; 400 unsigned char iface; 401 unsigned int cur_alt; 402 unsigned int old_alt; 403 struct cpia2_sbuf sbuf[NUM_SBUF]; /* Double buffering */ 404 405 wait_queue_head_t wq_stream; 406 407 /* Buffering */ 408 u32 frame_size; 409 int num_frames; 410 unsigned long frame_count; 411 u8 *frame_buffer; /* frame buffer data */ 412 struct framebuf *buffers; 413 struct framebuf * volatile curbuff; 414 struct framebuf *workbuff; 415 416 /* MJPEG Extension */ 417 int APPn; /* Number of APP segment to be written, must be 0..15 */ 418 int APP_len; /* Length of data in JPEG APPn segment */ 419 char APP_data[60]; /* Data in the JPEG APPn segment. */ 420 421 int COM_len; /* Length of data in JPEG COM segment */ 422 char COM_data[60]; /* Data in JPEG COM segment */ 423 }; 424 425 /* v4l */ 426 int cpia2_register_camera(struct camera_data *cam); 427 void cpia2_unregister_camera(struct camera_data *cam); 428 429 /* core */ 430 int cpia2_reset_camera(struct camera_data *cam); 431 int cpia2_set_low_power(struct camera_data *cam); 432 void cpia2_dbg_dump_registers(struct camera_data *cam); 433 int cpia2_match_video_size(int width, int height); 434 void cpia2_set_camera_state(struct camera_data *cam); 435 void cpia2_save_camera_state(struct camera_data *cam); 436 void cpia2_set_color_params(struct camera_data *cam); 437 void cpia2_set_brightness(struct camera_data *cam, unsigned char value); 438 void cpia2_set_contrast(struct camera_data *cam, unsigned char value); 439 void cpia2_set_saturation(struct camera_data *cam, unsigned char value); 440 int cpia2_set_flicker_mode(struct camera_data *cam, int mode); 441 void cpia2_set_format(struct camera_data *cam); 442 int cpia2_send_command(struct camera_data *cam, struct cpia2_command *cmd); 443 int cpia2_do_command(struct camera_data *cam, 444 unsigned int command, 445 unsigned char direction, unsigned char param); 446 struct camera_data *cpia2_init_camera_struct(void); 447 int cpia2_init_camera(struct camera_data *cam); 448 int cpia2_allocate_buffers(struct camera_data *cam); 449 void cpia2_free_buffers(struct camera_data *cam); 450 long cpia2_read(struct camera_data *cam, 451 char __user *buf, unsigned long count, int noblock); 452 unsigned int cpia2_poll(struct camera_data *cam, 453 struct file *filp, poll_table *wait); 454 int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma); 455 void cpia2_set_property_flip(struct camera_data *cam, int prop_val); 456 void cpia2_set_property_mirror(struct camera_data *cam, int prop_val); 457 int cpia2_set_target_kb(struct camera_data *cam, unsigned char value); 458 int cpia2_set_gpio(struct camera_data *cam, unsigned char setting); 459 int cpia2_set_fps(struct camera_data *cam, int framerate); 460 461 /* usb */ 462 int cpia2_usb_init(void); 463 void cpia2_usb_cleanup(void); 464 int cpia2_usb_transfer_cmd(struct camera_data *cam, void *registers, 465 u8 request, u8 start, u8 count, u8 direction); 466 int cpia2_usb_stream_start(struct camera_data *cam, unsigned int alternate); 467 int cpia2_usb_stream_stop(struct camera_data *cam); 468 int cpia2_usb_stream_pause(struct camera_data *cam); 469 int cpia2_usb_stream_resume(struct camera_data *cam); 470 int cpia2_usb_change_streaming_alternate(struct camera_data *cam, 471 unsigned int alt); 472 473 474 /* ----------------------- debug functions ---------------------- */ 475 #ifdef _CPIA2_DEBUG_ 476 #define ALOG(lev, fmt, args...) printk(lev "%s:%d %s(): " fmt, __FILE__, __LINE__, __func__, ## args) 477 #define LOG(fmt, args...) ALOG(KERN_INFO, fmt, ## args) 478 #define ERR(fmt, args...) ALOG(KERN_ERR, fmt, ## args) 479 #define DBG(fmt, args...) ALOG(KERN_DEBUG, fmt, ## args) 480 #else 481 #define ALOG(fmt,args...) printk(fmt,##args) 482 #define LOG(fmt,args...) ALOG(KERN_INFO "cpia2: "fmt,##args) 483 #define ERR(fmt,args...) ALOG(KERN_ERR "cpia2: "fmt,##args) 484 #define DBG(fmn,args...) do {} while(0) 485 #endif 486 /* No function or lineno, for shorter lines */ 487 #define KINFO(fmt, args...) printk(KERN_INFO fmt,##args) 488 489 #endif 490