drivers/media/video/cpia2/cpia2.h

   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/videodev2.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   3
  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 v4l2_lock; /* serialize file operations */
 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         u32 width;
 400         u32 height;                     /* Its size */
 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