drivers/media/usb/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  ****************************************************************************/
  26
  27 #ifndef __CPIA2_H__
  28 #define __CPIA2_H__
  29
  30 #include <linux/videodev2.h>
  31 #include <linux/usb.h>
  32 #include <linux/poll.h>
  33 #include <media/v4l2-common.h>
  34 #include <media/v4l2-device.h>
  35 #include <media/v4l2-ctrls.h>
  36
  37 #include "cpia2_registers.h"
  38
  39 /* define for verbose debug output */
  40 //#define _CPIA2_DEBUG_
  41
  42 /***
  43  * Image defines
  44  ***/
  45
  46 /*  Misc constants */
  47 #define ALLOW_CORRUPT 0         /* Causes collater to discard checksum */
  48
  49 /* USB Transfer mode */
  50 #define XFER_ISOC 0
  51 #define XFER_BULK 1
  52
  53 /* USB Alternates */
  54 #define USBIF_CMDONLY 0
  55 #define USBIF_BULK 1
  56 #define USBIF_ISO_1 2   /*  128 bytes/ms */
  57 #define USBIF_ISO_2 3   /*  384 bytes/ms */
  58 #define USBIF_ISO_3 4   /*  640 bytes/ms */
  59 #define USBIF_ISO_4 5   /*  768 bytes/ms */
  60 #define USBIF_ISO_5 6   /*  896 bytes/ms */
  61 #define USBIF_ISO_6 7   /* 1023 bytes/ms */
  62
  63 /* Flicker Modes */
  64 #define NEVER_FLICKER   0
  65 #define FLICKER_60      60
  66 #define FLICKER_50      50
  67
  68 /* Debug flags */
  69 #define DEBUG_NONE          0
  70 #define DEBUG_REG           0x00000001
  71 #define DEBUG_DUMP_PATCH    0x00000002
  72 #define DEBUG_DUMP_REGS     0x00000004
  73
  74 /***
  75  * Video frame sizes
  76  ***/
  77 enum {
  78         VIDEOSIZE_VGA = 0,      /* 640x480 */
  79         VIDEOSIZE_CIF,          /* 352x288 */
  80         VIDEOSIZE_QVGA,         /* 320x240 */
  81         VIDEOSIZE_QCIF,         /* 176x144 */
  82         VIDEOSIZE_288_216,
  83         VIDEOSIZE_256_192,
  84         VIDEOSIZE_224_168,
  85         VIDEOSIZE_192_144,
  86 };
  87
  88 #define STV_IMAGE_CIF_ROWS    288
  89 #define STV_IMAGE_CIF_COLS    352
  90
  91 #define STV_IMAGE_QCIF_ROWS   144
  92 #define STV_IMAGE_QCIF_COLS   176
  93
  94 #define STV_IMAGE_VGA_ROWS    480
  95 #define STV_IMAGE_VGA_COLS    640
  96
  97 #define STV_IMAGE_QVGA_ROWS   240
  98 #define STV_IMAGE_QVGA_COLS   320
  99
 100 #define JPEG_MARKER_COM (1<<6)  /* Comment segment */
 101
 102 /***
 103  * Enums
 104  ***/
 105 /* Sensor types available with cpia2 asics */
 106 enum sensors {
 107         CPIA2_SENSOR_410,
 108         CPIA2_SENSOR_500
 109 };
 110
 111 /* Asic types available in the CPiA2 architecture */
 112 #define  CPIA2_ASIC_672 0x67
 113
 114 /* Device types (stv672, stv676, etc) */
 115 #define  DEVICE_STV_672   0x0001
 116 #define  DEVICE_STV_676   0x0002
 117
 118 enum frame_status {
 119         FRAME_EMPTY,
 120         FRAME_READING,          /* In the process of being grabbed into */
 121         FRAME_READY,            /* Ready to be read */
 122         FRAME_ERROR,
 123 };
 124
 125 /***
 126  * Register access (for USB request byte)
 127  ***/
 128 enum {
 129         CAMERAACCESS_SYSTEM = 0,
 130         CAMERAACCESS_VC,
 131         CAMERAACCESS_VP,
 132         CAMERAACCESS_IDATA
 133 };
 134
 135 #define CAMERAACCESS_TYPE_BLOCK    0x00
 136 #define CAMERAACCESS_TYPE_RANDOM   0x04
 137 #define CAMERAACCESS_TYPE_MASK     0x08
 138 #define CAMERAACCESS_TYPE_REPEAT   0x0C
 139
 140 #define TRANSFER_READ 0
 141 #define TRANSFER_WRITE 1
 142
 143 #define DEFAULT_ALT   USBIF_ISO_6
 144 #define DEFAULT_BRIGHTNESS 0x46
 145 #define DEFAULT_CONTRAST 0x93
 146 #define DEFAULT_SATURATION 0x7f
 147
 148 /* Power state */
 149 #define HI_POWER_MODE CPIA2_SYSTEM_CONTROL_HIGH_POWER
 150 #define LO_POWER_MODE CPIA2_SYSTEM_CONTROL_LOW_POWER
 151
 152
 153 /********
 154  * Commands
 155  *******/
 156 enum {
 157         CPIA2_CMD_NONE = 0,
 158         CPIA2_CMD_GET_VERSION,
 159         CPIA2_CMD_GET_PNP_ID,
 160         CPIA2_CMD_GET_ASIC_TYPE,
 161         CPIA2_CMD_GET_SENSOR,
 162         CPIA2_CMD_GET_VP_DEVICE,
 163         CPIA2_CMD_GET_VP_BRIGHTNESS,
 164         CPIA2_CMD_SET_VP_BRIGHTNESS,
 165         CPIA2_CMD_GET_CONTRAST,
 166         CPIA2_CMD_SET_CONTRAST,
 167         CPIA2_CMD_GET_VP_SATURATION,
 168         CPIA2_CMD_SET_VP_SATURATION,
 169         CPIA2_CMD_GET_VP_GPIO_DIRECTION,
 170         CPIA2_CMD_SET_VP_GPIO_DIRECTION,
 171         CPIA2_CMD_GET_VP_GPIO_DATA,
 172         CPIA2_CMD_SET_VP_GPIO_DATA,
 173         CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION,
 174         CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
 175         CPIA2_CMD_GET_VC_MP_GPIO_DATA,
 176         CPIA2_CMD_SET_VC_MP_GPIO_DATA,
 177         CPIA2_CMD_ENABLE_PACKET_CTRL,
 178         CPIA2_CMD_GET_FLICKER_MODES,
 179         CPIA2_CMD_SET_FLICKER_MODES,
 180         CPIA2_CMD_RESET_FIFO,   /* clear fifo and enable stream block */
 181         CPIA2_CMD_SET_HI_POWER,
 182         CPIA2_CMD_SET_LOW_POWER,
 183         CPIA2_CMD_CLEAR_V2W_ERR,
 184         CPIA2_CMD_SET_USER_MODE,
 185         CPIA2_CMD_GET_USER_MODE,
 186         CPIA2_CMD_FRAMERATE_REQ,
 187         CPIA2_CMD_SET_COMPRESSION_STATE,
 188         CPIA2_CMD_GET_WAKEUP,
 189         CPIA2_CMD_SET_WAKEUP,
 190         CPIA2_CMD_GET_PW_CONTROL,
 191         CPIA2_CMD_SET_PW_CONTROL,
 192         CPIA2_CMD_GET_SYSTEM_CTRL,
 193         CPIA2_CMD_SET_SYSTEM_CTRL,
 194         CPIA2_CMD_GET_VP_SYSTEM_STATE,
 195         CPIA2_CMD_GET_VP_SYSTEM_CTRL,
 196         CPIA2_CMD_SET_VP_SYSTEM_CTRL,
 197         CPIA2_CMD_GET_VP_EXP_MODES,
 198         CPIA2_CMD_SET_VP_EXP_MODES,
 199         CPIA2_CMD_GET_DEVICE_CONFIG,
 200         CPIA2_CMD_SET_DEVICE_CONFIG,
 201         CPIA2_CMD_SET_SERIAL_ADDR,
 202         CPIA2_CMD_SET_SENSOR_CR1,
 203         CPIA2_CMD_GET_VC_CONTROL,
 204         CPIA2_CMD_SET_VC_CONTROL,
 205         CPIA2_CMD_SET_TARGET_KB,
 206         CPIA2_CMD_SET_DEF_JPEG_OPT,
 207         CPIA2_CMD_REHASH_VP4,
 208         CPIA2_CMD_GET_USER_EFFECTS,
 209         CPIA2_CMD_SET_USER_EFFECTS
 210 };
 211
 212 enum user_cmd {
 213         COMMAND_NONE = 0x00000001,
 214         COMMAND_SET_FPS = 0x00000002,
 215         COMMAND_SET_COLOR_PARAMS = 0x00000004,
 216         COMMAND_GET_COLOR_PARAMS = 0x00000008,
 217         COMMAND_SET_FORMAT = 0x00000010,        /* size, etc */
 218         COMMAND_SET_FLICKER = 0x00000020
 219 };
 220
 221 /***
 222  * Some defines specific to the 676 chip
 223  ***/
 224 #define CAMACC_CIF      0x01
 225 #define CAMACC_VGA      0x02
 226 #define CAMACC_QCIF     0x04
 227 #define CAMACC_QVGA     0x08
 228
 229
 230 struct cpia2_register {
 231         u8 index;
 232         u8 value;
 233 };
 234
 235 struct cpia2_reg_mask {
 236         u8 index;
 237         u8 and_mask;
 238         u8 or_mask;
 239         u8 fill;
 240 };
 241
 242 struct cpia2_command {
 243         u32 command;
 244         u8 req_mode;            /* (Block or random) | registerBank */
 245         u8 reg_count;
 246         u8 direction;
 247         u8 start;
 248         union reg_types {
 249                 struct cpia2_register registers[32];
 250                 struct cpia2_reg_mask masks[16];
 251                 u8 block_data[64];
 252                 u8 *patch_data; /* points to function defined block */
 253         } buffer;
 254 };
 255
 256 struct camera_params {
 257         struct {
 258                 u8 firmware_revision_hi; /* For system register set (bank 0) */
 259                 u8 firmware_revision_lo;
 260                 u8 asic_id;     /* Video Compressor set (bank 1) */
 261                 u8 asic_rev;
 262                 u8 vp_device_hi;        /* Video Processor set (bank 2) */
 263                 u8 vp_device_lo;
 264                 u8 sensor_flags;
 265                 u8 sensor_rev;
 266         } version;
 267
 268         struct {
 269                 u32 device_type;     /* enumerated from vendor/product ids.
 270                                       * Currently, either STV_672 or STV_676 */
 271                 u16 vendor;
 272                 u16 product;
 273                 u16 device_revision;
 274         } pnp_id;
 275
 276         struct {
 277                 u8 brightness;  /* CPIA2_VP_EXPOSURE_TARGET */
 278                 u8 contrast;    /* Note: this is CPIA2_VP_YRANGE */
 279                 u8 saturation;  /*  CPIA2_VP_SATURATION */
 280         } color_params;
 281
 282         struct {
 283                 u8 cam_register;
 284                 u8 flicker_mode_req;    /* 1 if flicker on, else never flicker */
 285         } flicker_control;
 286
 287         struct {
 288                 u8 jpeg_options;
 289                 u8 creep_period;
 290                 u8 user_squeeze;
 291                 u8 inhibit_htables;
 292         } compression;
 293
 294         struct {
 295                 u8 ohsize;      /* output image size */
 296                 u8 ovsize;
 297                 u8 hcrop;       /* cropping start_pos/4 */
 298                 u8 vcrop;
 299                 u8 hphase;      /* scaling registers */
 300                 u8 vphase;
 301                 u8 hispan;
 302                 u8 vispan;
 303                 u8 hicrop;
 304                 u8 vicrop;
 305                 u8 hifraction;
 306                 u8 vifraction;
 307         } image_size;
 308
 309         struct {
 310                 int width;      /* actual window width */
 311                 int height;     /* actual window height */
 312         } roi;
 313
 314         struct {
 315                 u8 video_mode;
 316                 u8 frame_rate;
 317                 u8 video_size;  /* Not a register, just a convenience for cropped sizes */
 318                 u8 gpio_direction;
 319                 u8 gpio_data;
 320                 u8 system_ctrl;
 321                 u8 system_state;
 322                 u8 lowlight_boost;      /* Bool: 0 = off, 1 = on */
 323                 u8 device_config;
 324                 u8 exposure_modes;
 325                 u8 user_effects;
 326         } vp_params;
 327
 328         struct {
 329                 u8 pw_control;
 330                 u8 wakeup;
 331                 u8 vc_control;
 332                 u8 vc_mp_direction;
 333                 u8 vc_mp_data;
 334                 u8 quality;
 335         } vc_params;
 336
 337         struct {
 338                 u8 power_mode;
 339                 u8 system_ctrl;
 340                 u8 stream_mode; /* This is the current alternate for usb drivers */
 341                 u8 allow_corrupt;
 342         } camera_state;
 343 };
 344
 345 #define NUM_SBUF    2
 346
 347 struct cpia2_sbuf {
 348         char *data;
 349         struct urb *urb;
 350 };
 351
 352 struct framebuf {
 353         struct timeval timestamp;
 354         unsigned long seq;
 355         int num;
 356         int length;
 357         int max_length;
 358         volatile enum frame_status status;
 359         u8 *data;
 360         struct framebuf *next;
 361 };
 362
 363 struct camera_data {
 364         /* locks */
 365         struct v4l2_device v4l2_dev;
 366         struct mutex v4l2_lock; /* serialize file operations */
 367         struct v4l2_ctrl_handler hdl;
 368         struct {
 369                 /* Lights control cluster */
 370                 struct v4l2_ctrl *top_light;
 371                 struct v4l2_ctrl *bottom_light;
 372         };
 373         struct v4l2_ctrl *usb_alt;
 374
 375         /* camera status */
 376         int first_image_seen;
 377         enum sensors sensor_type;
 378         u8 flush;
 379         struct v4l2_fh *stream_fh;
 380         u8 mmapped;
 381         int streaming;          /* 0 = no, 1 = yes */
 382         int xfer_mode;          /* XFER_BULK or XFER_ISOC */
 383         struct camera_params params;    /* camera settings */
 384
 385         /* v4l */
 386         int video_size;                 /* VIDEO_SIZE_ */
 387         struct video_device vdev;       /* v4l videodev */
 388         u32 width;
 389         u32 height;                     /* Its size */
 390         __u32 pixelformat;       /* Format fourcc      */
 391
 392         /* USB */
 393         struct usb_device *dev;
 394         unsigned char iface;
 395         unsigned int cur_alt;
 396         unsigned int old_alt;
 397         struct cpia2_sbuf sbuf[NUM_SBUF];       /* Double buffering */
 398
 399         wait_queue_head_t wq_stream;
 400
 401         /* Buffering */
 402         u32 frame_size;
 403         int num_frames;
 404         unsigned long frame_count;
 405         u8 *frame_buffer;       /* frame buffer data */
 406         struct framebuf *buffers;
 407         struct framebuf * volatile curbuff;
 408         struct framebuf *workbuff;
 409
 410         /* MJPEG Extension */
 411         int APPn;               /* Number of APP segment to be written, must be 0..15 */
 412         int APP_len;            /* Length of data in JPEG APPn segment */
 413         char APP_data[60];      /* Data in the JPEG APPn segment. */
 414
 415         int COM_len;            /* Length of data in JPEG COM segment */
 416         char COM_data[60];      /* Data in JPEG COM segment */
 417 };
 418
 419 /* v4l */
 420 int cpia2_register_camera(struct camera_data *cam);
 421 void cpia2_unregister_camera(struct camera_data *cam);
 422 void cpia2_camera_release(struct v4l2_device *v4l2_dev);
 423
 424 /* core */
 425 int cpia2_reset_camera(struct camera_data *cam);
 426 int cpia2_set_low_power(struct camera_data *cam);
 427 void cpia2_dbg_dump_registers(struct camera_data *cam);
 428 int cpia2_match_video_size(int width, int height);
 429 void cpia2_set_camera_state(struct camera_data *cam);
 430 void cpia2_save_camera_state(struct camera_data *cam);
 431 void cpia2_set_color_params(struct camera_data *cam);
 432 void cpia2_set_brightness(struct camera_data *cam, unsigned char value);
 433 void cpia2_set_contrast(struct camera_data *cam, unsigned char value);
 434 void cpia2_set_saturation(struct camera_data *cam, unsigned char value);
 435 int cpia2_set_flicker_mode(struct camera_data *cam, int mode);
 436 void cpia2_set_format(struct camera_data *cam);
 437 int cpia2_send_command(struct camera_data *cam, struct cpia2_command *cmd);
 438 int cpia2_do_command(struct camera_data *cam,
 439                      unsigned int command,
 440                      unsigned char direction, unsigned char param);
 441 struct camera_data *cpia2_init_camera_struct(struct usb_interface *intf);
 442 int cpia2_init_camera(struct camera_data *cam);
 443 int cpia2_allocate_buffers(struct camera_data *cam);
 444 void cpia2_free_buffers(struct camera_data *cam);
 445 long cpia2_read(struct camera_data *cam,
 446                 char __user *buf, unsigned long count, int noblock);
 447 unsigned int cpia2_poll(struct camera_data *cam,
 448                         struct file *filp, poll_table *wait);
 449 int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma);
 450 void cpia2_set_property_flip(struct camera_data *cam, int prop_val);
 451 void cpia2_set_property_mirror(struct camera_data *cam, int prop_val);
 452 int cpia2_set_gpio(struct camera_data *cam, unsigned char setting);
 453 int cpia2_set_fps(struct camera_data *cam, int framerate);
 454
 455 /* usb */
 456 int cpia2_usb_init(void);
 457 void cpia2_usb_cleanup(void);
 458 int cpia2_usb_transfer_cmd(struct camera_data *cam, void *registers,
 459                            u8 request, u8 start, u8 count, u8 direction);
 460 int cpia2_usb_stream_start(struct camera_data *cam, unsigned int alternate);
 461 int cpia2_usb_stream_stop(struct camera_data *cam);
 462 int cpia2_usb_stream_pause(struct camera_data *cam);
 463 int cpia2_usb_stream_resume(struct camera_data *cam);
 464 int cpia2_usb_change_streaming_alternate(struct camera_data *cam,
 465                                          unsigned int alt);
 466
 467
 468 /* ----------------------- debug functions ---------------------- */
 469 #ifdef _CPIA2_DEBUG_
 470 #define ALOG(lev, fmt, args...) printk(lev "%s:%d %s(): " fmt, __FILE__, __LINE__, __func__, ## args)
 471 #define LOG(fmt, args...) ALOG(KERN_INFO, fmt, ## args)
 472 #define ERR(fmt, args...) ALOG(KERN_ERR, fmt, ## args)
 473 #define DBG(fmt, args...) ALOG(KERN_DEBUG, fmt, ## args)
 474 #else
 475 #define ALOG(fmt,args...) printk(fmt,##args)
 476 #define LOG(fmt,args...) ALOG(KERN_INFO "cpia2: "fmt,##args)
 477 #define ERR(fmt,args...) ALOG(KERN_ERR "cpia2: "fmt,##args)
 478 #define DBG(fmn,args...) do {} while(0)
 479 #endif
 480 /* No function or lineno, for shorter lines */
 481 #define KINFO(fmt, args...) printk(KERN_INFO fmt,##args)
 482
 483 #endif