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/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