drivers/media/usb/cpia2/cpia2.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /****************************************************************************
   3  *
   4  *  Filename: cpia2.h
   5  *
   6  *  Copyright 2001, STMicrolectronics, Inc.
   7  *
   8  *  Contact:  steve.miller@st.com
   9  *
  10  *  Description:
  11  *     This is a USB driver for CPiA2 based video cameras.
  12  *
  13  *     This driver is modelled on the cpia usb driver by
  14  *     Jochen Scharrlach and Johannes Erdfeldt.
  15  *
  16  ****************************************************************************/
  17
  18 #ifndef __CPIA2_H__
  19 #define __CPIA2_H__
  20
  21 #include <linux/videodev2.h>
  22 #include <linux/usb.h>
  23 #include <linux/poll.h>
  24 #include <media/v4l2-common.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-ctrls.h>
  27
  28 #include "cpia2_registers.h"
  29
  30 /* define for verbose debug output */
  31 //#define _CPIA2_DEBUG_
  32
  33 /***
  34  * Image defines
  35  ***/
  36
  37 /*  Misc constants */
  38 #define ALLOW_CORRUPT 0         /* Causes collater to discard checksum */
  39
  40 /* USB Transfer mode */
  41 #define XFER_ISOC 0
  42 #define XFER_BULK 1
  43
  44 /* USB Alternates */
  45 #define USBIF_CMDONLY 0
  46 #define USBIF_BULK 1
  47 #define USBIF_ISO_1 2   /*  128 bytes/ms */
  48 #define USBIF_ISO_2 3   /*  384 bytes/ms */
  49 #define USBIF_ISO_3 4   /*  640 bytes/ms */
  50 #define USBIF_ISO_4 5   /*  768 bytes/ms */
  51 #define USBIF_ISO_5 6   /*  896 bytes/ms */
  52 #define USBIF_ISO_6 7   /* 1023 bytes/ms */
  53
  54 /* Flicker Modes */
  55 #define NEVER_FLICKER   0
  56 #define FLICKER_60      60
  57 #define FLICKER_50      50
  58
  59 /* Debug flags */
  60 #define DEBUG_NONE          0
  61 #define DEBUG_REG           0x00000001
  62 #define DEBUG_DUMP_PATCH    0x00000002
  63 #define DEBUG_DUMP_REGS     0x00000004
  64
  65 /***
  66  * Video frame sizes
  67  ***/
  68 enum {
  69         VIDEOSIZE_VGA = 0,      /* 640x480 */
  70         VIDEOSIZE_CIF,          /* 352x288 */
  71         VIDEOSIZE_QVGA,         /* 320x240 */
  72         VIDEOSIZE_QCIF,         /* 176x144 */
  73         VIDEOSIZE_288_216,
  74         VIDEOSIZE_256_192,
  75         VIDEOSIZE_224_168,
  76         VIDEOSIZE_192_144,
  77 };
  78
  79 #define STV_IMAGE_CIF_ROWS    288
  80 #define STV_IMAGE_CIF_COLS    352
  81
  82 #define STV_IMAGE_QCIF_ROWS   144
  83 #define STV_IMAGE_QCIF_COLS   176
  84
  85 #define STV_IMAGE_VGA_ROWS    480
  86 #define STV_IMAGE_VGA_COLS    640
  87
  88 #define STV_IMAGE_QVGA_ROWS   240
  89 #define STV_IMAGE_QVGA_COLS   320
  90
  91 #define JPEG_MARKER_COM (1<<6)  /* Comment segment */
  92
  93 /***
  94  * Enums
  95  ***/
  96 /* Sensor types available with cpia2 asics */
  97 enum sensors {
  98         CPIA2_SENSOR_410,
  99         CPIA2_SENSOR_500
 100 };
 101
 102 /* Asic types available in the CPiA2 architecture */
 103 #define  CPIA2_ASIC_672 0x67
 104
 105 /* Device types (stv672, stv676, etc) */
 106 #define  DEVICE_STV_672   0x0001
 107 #define  DEVICE_STV_676   0x0002
 108
 109 enum frame_status {
 110         FRAME_EMPTY,
 111         FRAME_READING,          /* In the process of being grabbed into */
 112         FRAME_READY,            /* Ready to be read */
 113         FRAME_ERROR,
 114 };
 115
 116 /***
 117  * Register access (for USB request byte)
 118  ***/
 119 enum {
 120         CAMERAACCESS_SYSTEM = 0,
 121         CAMERAACCESS_VC,
 122         CAMERAACCESS_VP,
 123         CAMERAACCESS_IDATA
 124 };
 125
 126 #define CAMERAACCESS_TYPE_BLOCK    0x00
 127 #define CAMERAACCESS_TYPE_RANDOM   0x04
 128 #define CAMERAACCESS_TYPE_MASK     0x08
 129 #define CAMERAACCESS_TYPE_REPEAT   0x0C
 130
 131 #define TRANSFER_READ 0
 132 #define TRANSFER_WRITE 1
 133
 134 #define DEFAULT_ALT   USBIF_ISO_6
 135 #define DEFAULT_BRIGHTNESS 0x46
 136 #define DEFAULT_CONTRAST 0x93
 137 #define DEFAULT_SATURATION 0x7f
 138
 139 /* Power state */
 140 #define HI_POWER_MODE CPIA2_SYSTEM_CONTROL_HIGH_POWER
 141 #define LO_POWER_MODE CPIA2_SYSTEM_CONTROL_LOW_POWER
 142
 143
 144 /********
 145  * Commands
 146  *******/
 147 enum {
 148         CPIA2_CMD_NONE = 0,
 149         CPIA2_CMD_GET_VERSION,
 150         CPIA2_CMD_GET_PNP_ID,
 151         CPIA2_CMD_GET_ASIC_TYPE,
 152         CPIA2_CMD_GET_SENSOR,
 153         CPIA2_CMD_GET_VP_DEVICE,
 154         CPIA2_CMD_GET_VP_BRIGHTNESS,
 155         CPIA2_CMD_SET_VP_BRIGHTNESS,
 156         CPIA2_CMD_GET_CONTRAST,
 157         CPIA2_CMD_SET_CONTRAST,
 158         CPIA2_CMD_GET_VP_SATURATION,
 159         CPIA2_CMD_SET_VP_SATURATION,
 160         CPIA2_CMD_GET_VP_GPIO_DIRECTION,
 161         CPIA2_CMD_SET_VP_GPIO_DIRECTION,
 162         CPIA2_CMD_GET_VP_GPIO_DATA,
 163         CPIA2_CMD_SET_VP_GPIO_DATA,
 164         CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION,
 165         CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
 166         CPIA2_CMD_GET_VC_MP_GPIO_DATA,
 167         CPIA2_CMD_SET_VC_MP_GPIO_DATA,
 168         CPIA2_CMD_ENABLE_PACKET_CTRL,
 169         CPIA2_CMD_GET_FLICKER_MODES,
 170         CPIA2_CMD_SET_FLICKER_MODES,
 171         CPIA2_CMD_RESET_FIFO,   /* clear fifo and enable stream block */
 172         CPIA2_CMD_SET_HI_POWER,
 173         CPIA2_CMD_SET_LOW_POWER,
 174         CPIA2_CMD_CLEAR_V2W_ERR,
 175         CPIA2_CMD_SET_USER_MODE,
 176         CPIA2_CMD_GET_USER_MODE,
 177         CPIA2_CMD_FRAMERATE_REQ,
 178         CPIA2_CMD_SET_COMPRESSION_STATE,
 179         CPIA2_CMD_GET_WAKEUP,
 180         CPIA2_CMD_SET_WAKEUP,
 181         CPIA2_CMD_GET_PW_CONTROL,
 182         CPIA2_CMD_SET_PW_CONTROL,
 183         CPIA2_CMD_GET_SYSTEM_CTRL,
 184         CPIA2_CMD_SET_SYSTEM_CTRL,
 185         CPIA2_CMD_GET_VP_SYSTEM_STATE,
 186         CPIA2_CMD_GET_VP_SYSTEM_CTRL,
 187         CPIA2_CMD_SET_VP_SYSTEM_CTRL,
 188         CPIA2_CMD_GET_VP_EXP_MODES,
 189         CPIA2_CMD_SET_VP_EXP_MODES,
 190         CPIA2_CMD_GET_DEVICE_CONFIG,
 191         CPIA2_CMD_SET_DEVICE_CONFIG,
 192         CPIA2_CMD_SET_SERIAL_ADDR,
 193         CPIA2_CMD_SET_SENSOR_CR1,
 194         CPIA2_CMD_GET_VC_CONTROL,
 195         CPIA2_CMD_SET_VC_CONTROL,
 196         CPIA2_CMD_SET_TARGET_KB,
 197         CPIA2_CMD_SET_DEF_JPEG_OPT,
 198         CPIA2_CMD_REHASH_VP4,
 199         CPIA2_CMD_GET_USER_EFFECTS,
 200         CPIA2_CMD_SET_USER_EFFECTS
 201 };
 202
 203 enum user_cmd {
 204         COMMAND_NONE = 0x00000001,
 205         COMMAND_SET_FPS = 0x00000002,
 206         COMMAND_SET_COLOR_PARAMS = 0x00000004,
 207         COMMAND_GET_COLOR_PARAMS = 0x00000008,
 208         COMMAND_SET_FORMAT = 0x00000010,        /* size, etc */
 209         COMMAND_SET_FLICKER = 0x00000020
 210 };
 211
 212 /***
 213  * Some defines specific to the 676 chip
 214  ***/
 215 #define CAMACC_CIF      0x01
 216 #define CAMACC_VGA      0x02
 217 #define CAMACC_QCIF     0x04
 218 #define CAMACC_QVGA     0x08
 219
 220
 221 struct cpia2_register {
 222         u8 index;
 223         u8 value;
 224 };
 225
 226 struct cpia2_reg_mask {
 227         u8 index;
 228         u8 and_mask;
 229         u8 or_mask;
 230         u8 fill;
 231 };
 232
 233 struct cpia2_command {
 234         u32 command;
 235         u8 req_mode;            /* (Block or random) | registerBank */
 236         u8 reg_count;
 237         u8 direction;
 238         u8 start;
 239         union reg_types {
 240                 struct cpia2_register registers[32];
 241                 struct cpia2_reg_mask masks[16];
 242                 u8 block_data[64];
 243                 u8 *patch_data; /* points to function defined block */
 244         } buffer;
 245 };
 246
 247 struct camera_params {
 248         struct {
 249                 u8 firmware_revision_hi; /* For system register set (bank 0) */
 250                 u8 firmware_revision_lo;
 251                 u8 asic_id;     /* Video Compressor set (bank 1) */
 252                 u8 asic_rev;
 253                 u8 vp_device_hi;        /* Video Processor set (bank 2) */
 254                 u8 vp_device_lo;
 255                 u8 sensor_flags;
 256                 u8 sensor_rev;
 257         } version;
 258
 259         struct {
 260                 u32 device_type;     /* enumerated from vendor/product ids.
 261                                       * Currently, either STV_672 or STV_676 */
 262                 u16 vendor;
 263                 u16 product;
 264                 u16 device_revision;
 265         } pnp_id;
 266
 267         struct {
 268                 u8 brightness;  /* CPIA2_VP_EXPOSURE_TARGET */
 269                 u8 contrast;    /* Note: this is CPIA2_VP_YRANGE */
 270                 u8 saturation;  /*  CPIA2_VP_SATURATION */
 271         } color_params;
 272
 273         struct {
 274                 u8 cam_register;
 275                 u8 flicker_mode_req;    /* 1 if flicker on, else never flicker */
 276         } flicker_control;
 277
 278         struct {
 279                 u8 jpeg_options;
 280                 u8 creep_period;
 281                 u8 user_squeeze;
 282                 u8 inhibit_htables;
 283         } compression;
 284
 285         struct {
 286                 u8 ohsize;      /* output image size */
 287                 u8 ovsize;
 288                 u8 hcrop;       /* cropping start_pos/4 */
 289                 u8 vcrop;
 290                 u8 hphase;      /* scaling registers */
 291                 u8 vphase;
 292                 u8 hispan;
 293                 u8 vispan;
 294                 u8 hicrop;
 295                 u8 vicrop;
 296                 u8 hifraction;
 297                 u8 vifraction;
 298         } image_size;
 299
 300         struct {
 301                 int width;      /* actual window width */
 302                 int height;     /* actual window height */
 303         } roi;
 304
 305         struct {
 306                 u8 video_mode;
 307                 u8 frame_rate;
 308                 u8 video_size;  /* Not a register, just a convenience for cropped sizes */
 309                 u8 gpio_direction;
 310                 u8 gpio_data;
 311                 u8 system_ctrl;
 312                 u8 system_state;
 313                 u8 lowlight_boost;      /* Bool: 0 = off, 1 = on */
 314                 u8 device_config;
 315                 u8 exposure_modes;
 316                 u8 user_effects;
 317         } vp_params;
 318
 319         struct {
 320                 u8 pw_control;
 321                 u8 wakeup;
 322                 u8 vc_control;
 323                 u8 vc_mp_direction;
 324                 u8 vc_mp_data;
 325                 u8 quality;
 326         } vc_params;
 327
 328         struct {
 329                 u8 power_mode;
 330                 u8 system_ctrl;
 331                 u8 stream_mode; /* This is the current alternate for usb drivers */
 332                 u8 allow_corrupt;
 333         } camera_state;
 334 };
 335
 336 #define NUM_SBUF    2
 337
 338 struct cpia2_sbuf {
 339         char *data;
 340         struct urb *urb;
 341 };
 342
 343 struct framebuf {
 344         u64 ts;
 345         unsigned long seq;
 346         int num;
 347         int length;
 348         int max_length;
 349         volatile enum frame_status status;
 350         u8 *data;
 351         struct framebuf *next;
 352 };
 353
 354 struct camera_data {
 355         /* locks */
 356         struct v4l2_device v4l2_dev;
 357         struct mutex v4l2_lock; /* serialize file operations */
 358         struct v4l2_ctrl_handler hdl;
 359         struct {
 360                 /* Lights control cluster */
 361                 struct v4l2_ctrl *top_light;
 362                 struct v4l2_ctrl *bottom_light;
 363         };
 364         struct v4l2_ctrl *usb_alt;
 365
 366         /* camera status */
 367         int first_image_seen;
 368         enum sensors sensor_type;
 369         u8 flush;
 370         struct v4l2_fh *stream_fh;
 371         u8 mmapped;
 372         int streaming;          /* 0 = no, 1 = yes */
 373         int xfer_mode;          /* XFER_BULK or XFER_ISOC */
 374         struct camera_params params;    /* camera settings */
 375
 376         /* v4l */
 377         int video_size;                 /* VIDEO_SIZE_ */
 378         struct video_device vdev;       /* v4l videodev */
 379         u32 width;
 380         u32 height;                     /* Its size */
 381         __u32 pixelformat;       /* Format fourcc      */
 382
 383         /* USB */
 384         struct usb_device *dev;
 385         unsigned char iface;
 386         unsigned int cur_alt;
 387         unsigned int old_alt;
 388         struct cpia2_sbuf sbuf[NUM_SBUF];       /* Double buffering */
 389
 390         wait_queue_head_t wq_stream;
 391
 392         /* Buffering */
 393         u32 frame_size;
 394         int num_frames;
 395         unsigned long frame_count;
 396         u8 *frame_buffer;       /* frame buffer data */
 397         struct framebuf *buffers;
 398         struct framebuf * volatile curbuff;
 399         struct framebuf *workbuff;
 400
 401         /* MJPEG Extension */
 402         int APPn;               /* Number of APP segment to be written, must be 0..15 */
 403         int APP_len;            /* Length of data in JPEG APPn segment */
 404         char APP_data[60];      /* Data in the JPEG APPn segment. */
 405
 406         int COM_len;            /* Length of data in JPEG COM segment */
 407         char COM_data[60];      /* Data in JPEG COM segment */
 408 };
 409
 410 /* v4l */
 411 int cpia2_register_camera(struct camera_data *cam);
 412 void cpia2_unregister_camera(struct camera_data *cam);
 413 void cpia2_camera_release(struct v4l2_device *v4l2_dev);
 414
 415 /* core */
 416 int cpia2_reset_camera(struct camera_data *cam);
 417 int cpia2_set_low_power(struct camera_data *cam);
 418 void cpia2_dbg_dump_registers(struct camera_data *cam);
 419 int cpia2_match_video_size(int width, int height);
 420 void cpia2_set_camera_state(struct camera_data *cam);
 421 void cpia2_save_camera_state(struct camera_data *cam);
 422 void cpia2_set_color_params(struct camera_data *cam);
 423 void cpia2_set_brightness(struct camera_data *cam, unsigned char value);
 424 void cpia2_set_contrast(struct camera_data *cam, unsigned char value);
 425 void cpia2_set_saturation(struct camera_data *cam, unsigned char value);
 426 int cpia2_set_flicker_mode(struct camera_data *cam, int mode);
 427 void cpia2_set_format(struct camera_data *cam);
 428 int cpia2_send_command(struct camera_data *cam, struct cpia2_command *cmd);
 429 int cpia2_do_command(struct camera_data *cam,
 430                      unsigned int command,
 431                      unsigned char direction, unsigned char param);
 432 struct camera_data *cpia2_init_camera_struct(struct usb_interface *intf);
 433 int cpia2_init_camera(struct camera_data *cam);
 434 int cpia2_allocate_buffers(struct camera_data *cam);
 435 void cpia2_free_buffers(struct camera_data *cam);
 436 long cpia2_read(struct camera_data *cam,
 437                 char __user *buf, unsigned long count, int noblock);
 438 __poll_t cpia2_poll(struct camera_data *cam,
 439                         struct file *filp, poll_table *wait);
 440 int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma);
 441 void cpia2_set_property_flip(struct camera_data *cam, int prop_val);
 442 void cpia2_set_property_mirror(struct camera_data *cam, int prop_val);
 443 int cpia2_set_gpio(struct camera_data *cam, unsigned char setting);
 444 int cpia2_set_fps(struct camera_data *cam, int framerate);
 445
 446 /* usb */
 447 int cpia2_usb_init(void);
 448 void cpia2_usb_cleanup(void);
 449 int cpia2_usb_transfer_cmd(struct camera_data *cam, void *registers,
 450                            u8 request, u8 start, u8 count, u8 direction);
 451 int cpia2_usb_stream_start(struct camera_data *cam, unsigned int alternate);
 452 int cpia2_usb_stream_stop(struct camera_data *cam);
 453 int cpia2_usb_stream_pause(struct camera_data *cam);
 454 int cpia2_usb_stream_resume(struct camera_data *cam);
 455 int cpia2_usb_change_streaming_alternate(struct camera_data *cam,
 456                                          unsigned int alt);
 457
 458
 459 /* ----------------------- debug functions ---------------------- */
 460 #ifdef _CPIA2_DEBUG_
 461 #define ALOG(lev, fmt, args...) printk(lev "%s:%d %s(): " fmt, __FILE__, __LINE__, __func__, ## args)
 462 #define LOG(fmt, args...) ALOG(KERN_INFO, fmt, ## args)
 463 #define ERR(fmt, args...) ALOG(KERN_ERR, fmt, ## args)
 464 #define DBG(fmt, args...) ALOG(KERN_DEBUG, fmt, ## args)
 465 #else
 466 #define ALOG(fmt,args...) printk(fmt,##args)
 467 #define LOG(fmt,args...) ALOG(KERN_INFO "cpia2: "fmt,##args)
 468 #define ERR(fmt,args...) ALOG(KERN_ERR "cpia2: "fmt,##args)
 469 #define DBG(fmn,args...) do {} while(0)
 470 #endif
 471 /* No function or lineno, for shorter lines */
 472 #define KINFO(fmt, args...) printk(KERN_INFO fmt,##args)
 473
 474 #endif