drivers/media/video/s2255drv.c

   1 /*
   2  *  s2255drv.c - a driver for the Sensoray 2255 USB video capture device
   3  *
   4  *   Copyright (C) 2007-2010 by Sensoray Company Inc.
   5  *                              Dean Anderson
   6  *
   7  * Some video buffer code based on vivi driver:
   8  *
   9  * Sensoray 2255 device supports 4 simultaneous channels.
  10  * The channels are not "crossbar" inputs, they are physically
  11  * attached to separate video decoders.
  12  *
  13  * Because of USB2.0 bandwidth limitations. There is only a
  14  * certain amount of data which may be transferred at one time.
  15  *
  16  * Example maximum bandwidth utilization:
  17  *
  18  * -full size, color mode YUYV or YUV422P: 2 channels at once
  19  *
  20  * -full or half size Grey scale: all 4 channels at once
  21  *
  22  * -half size, color mode YUYV or YUV422P: all 4 channels at once
  23  *
  24  * -full size, color mode YUYV or YUV422P 1/2 frame rate: all 4 channels
  25  *  at once.
  26  *  (TODO: Incorporate videodev2 frame rate(FR) enumeration,
  27  *  which is currently experimental.)
  28  *
  29  * This program is free software; you can redistribute it and/or modify
  30  * it under the terms of the GNU General Public License as published by
  31  * the Free Software Foundation; either version 2 of the License, or
  32  * (at your option) any later version.
  33  *
  34  * This program is distributed in the hope that it will be useful,
  35  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  36  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  37  * GNU General Public License for more details.
  38  *
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  42  */
  43
  44 #include <linux/module.h>
  45 #include <linux/firmware.h>
  46 #include <linux/kernel.h>
  47 #include <linux/mutex.h>
  48 #include <linux/slab.h>
  49 #include <linux/videodev2.h>
  50 #include <linux/version.h>
  51 #include <linux/mm.h>
  52 #include <linux/smp_lock.h>
  53 #include <media/videobuf-vmalloc.h>
  54 #include <media/v4l2-common.h>
  55 #include <media/v4l2-device.h>
  56 #include <media/v4l2-ioctl.h>
  57 #include <linux/vmalloc.h>
  58 #include <linux/usb.h>
  59
  60 #define S2255_MAJOR_VERSION     1
  61 #define S2255_MINOR_VERSION     20
  62 #define S2255_RELEASE           0
  63 #define S2255_VERSION           KERNEL_VERSION(S2255_MAJOR_VERSION, \
  64                                                S2255_MINOR_VERSION, \
  65                                                S2255_RELEASE)
  66 #define FIRMWARE_FILE_NAME "f2255usb.bin"
  67
  68 /* default JPEG quality */
  69 #define S2255_DEF_JPEG_QUAL     50
  70 /* vendor request in */
  71 #define S2255_VR_IN             0
  72 /* vendor request out */
  73 #define S2255_VR_OUT            1
  74 /* firmware query */
  75 #define S2255_VR_FW             0x30
  76 /* USB endpoint number for configuring the device */
  77 #define S2255_CONFIG_EP         2
  78 /* maximum time for DSP to start responding after last FW word loaded(ms) */
  79 #define S2255_DSP_BOOTTIME      800
  80 /* maximum time to wait for firmware to load (ms) */
  81 #define S2255_LOAD_TIMEOUT      (5000 + S2255_DSP_BOOTTIME)
  82 #define S2255_DEF_BUFS          16
  83 #define S2255_SETMODE_TIMEOUT   500
  84 #define S2255_VIDSTATUS_TIMEOUT 350
  85 #define S2255_MARKER_FRAME      cpu_to_le32(0x2255DA4AL)
  86 #define S2255_MARKER_RESPONSE   cpu_to_le32(0x2255ACACL)
  87 #define S2255_RESPONSE_SETMODE  cpu_to_le32(0x01)
  88 #define S2255_RESPONSE_FW       cpu_to_le32(0x10)
  89 #define S2255_RESPONSE_STATUS   cpu_to_le32(0x20)
  90 #define S2255_USB_XFER_SIZE     (16 * 1024)
  91 #define MAX_CHANNELS            4
  92 #define SYS_FRAMES              4
  93 /* maximum size is PAL full size plus room for the marker header(s) */
  94 #define SYS_FRAMES_MAXSIZE      (720*288*2*2 + 4096)
  95 #define DEF_USB_BLOCK           S2255_USB_XFER_SIZE
  96 #define LINE_SZ_4CIFS_NTSC      640
  97 #define LINE_SZ_2CIFS_NTSC      640
  98 #define LINE_SZ_1CIFS_NTSC      320
  99 #define LINE_SZ_4CIFS_PAL       704
 100 #define LINE_SZ_2CIFS_PAL       704
 101 #define LINE_SZ_1CIFS_PAL       352
 102 #define NUM_LINES_4CIFS_NTSC    240
 103 #define NUM_LINES_2CIFS_NTSC    240
 104 #define NUM_LINES_1CIFS_NTSC    240
 105 #define NUM_LINES_4CIFS_PAL     288
 106 #define NUM_LINES_2CIFS_PAL     288
 107 #define NUM_LINES_1CIFS_PAL     288
 108 #define LINE_SZ_DEF             640
 109 #define NUM_LINES_DEF           240
 110
 111
 112 /* predefined settings */
 113 #define FORMAT_NTSC     1
 114 #define FORMAT_PAL      2
 115
 116 #define SCALE_4CIFS     1       /* 640x480(NTSC) or 704x576(PAL) */
 117 #define SCALE_2CIFS     2       /* 640x240(NTSC) or 704x288(PAL) */
 118 #define SCALE_1CIFS     3       /* 320x240(NTSC) or 352x288(PAL) */
 119 /* SCALE_4CIFSI is the 2 fields interpolated into one */
 120 #define SCALE_4CIFSI    4       /* 640x480(NTSC) or 704x576(PAL) high quality */
 121
 122 #define COLOR_YUVPL     1       /* YUV planar */
 123 #define COLOR_YUVPK     2       /* YUV packed */
 124 #define COLOR_Y8        4       /* monochrome */
 125 #define COLOR_JPG       5       /* JPEG */
 126
 127 #define MASK_COLOR       0x000000ff
 128 #define MASK_JPG_QUALITY 0x0000ff00
 129 #define MASK_INPUT_TYPE  0x000f0000
 130 /* frame decimation. Not implemented by V4L yet(experimental in V4L) */
 131 #define FDEC_1          1       /* capture every frame. default */
 132 #define FDEC_2          2       /* capture every 2nd frame */
 133 #define FDEC_3          3       /* capture every 3rd frame */
 134 #define FDEC_5          5       /* capture every 5th frame */
 135
 136 /*-------------------------------------------------------
 137  * Default mode parameters.
 138  *-------------------------------------------------------*/
 139 #define DEF_SCALE       SCALE_4CIFS
 140 #define DEF_COLOR       COLOR_YUVPL
 141 #define DEF_FDEC        FDEC_1
 142 #define DEF_BRIGHT      0
 143 #define DEF_CONTRAST    0x5c
 144 #define DEF_SATURATION  0x80
 145 #define DEF_HUE         0
 146
 147 /* usb config commands */
 148 #define IN_DATA_TOKEN   cpu_to_le32(0x2255c0de)
 149 #define CMD_2255        cpu_to_le32(0xc2255000)
 150 #define CMD_SET_MODE    cpu_to_le32((CMD_2255 | 0x10))
 151 #define CMD_START       cpu_to_le32((CMD_2255 | 0x20))
 152 #define CMD_STOP        cpu_to_le32((CMD_2255 | 0x30))
 153 #define CMD_STATUS      cpu_to_le32((CMD_2255 | 0x40))
 154
 155 struct s2255_mode {
 156         u32 format;     /* input video format (NTSC, PAL) */
 157         u32 scale;      /* output video scale */
 158         u32 color;      /* output video color format */
 159         u32 fdec;       /* frame decimation */
 160         u32 bright;     /* brightness */
 161         u32 contrast;   /* contrast */
 162         u32 saturation; /* saturation */
 163         u32 hue;        /* hue (NTSC only)*/
 164         u32 single;     /* capture 1 frame at a time (!=0), continuously (==0)*/
 165         u32 usb_block;  /* block size. should be 4096 of DEF_USB_BLOCK */
 166         u32 restart;    /* if DSP requires restart */
 167 };
 168
 169
 170 #define S2255_READ_IDLE         0
 171 #define S2255_READ_FRAME        1
 172
 173 /* frame structure */
 174 struct s2255_framei {
 175         unsigned long size;
 176         unsigned long ulState;  /* ulState:S2255_READ_IDLE, S2255_READ_FRAME*/
 177         void *lpvbits;          /* image data */
 178         unsigned long cur_size; /* current data copied to it */
 179 };
 180
 181 /* image buffer structure */
 182 struct s2255_bufferi {
 183         unsigned long dwFrames;                 /* number of frames in buffer */
 184         struct s2255_framei frame[SYS_FRAMES];  /* array of FRAME structures */
 185 };
 186
 187 #define DEF_MODEI_NTSC_CONT     {FORMAT_NTSC, DEF_SCALE, DEF_COLOR,     \
 188                         DEF_FDEC, DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, \
 189                         DEF_HUE, 0, DEF_USB_BLOCK, 0}
 190
 191 struct s2255_dmaqueue {
 192         struct list_head        active;
 193         struct s2255_dev        *dev;
 194         int                     channel;
 195 };
 196
 197 /* for firmware loading, fw_state */
 198 #define S2255_FW_NOTLOADED      0
 199 #define S2255_FW_LOADED_DSPWAIT 1
 200 #define S2255_FW_SUCCESS        2
 201 #define S2255_FW_FAILED         3
 202 #define S2255_FW_DISCONNECTING  4
 203 #define S2255_FW_MARKER         cpu_to_le32(0x22552f2f)
 204 /* 2255 read states */
 205 #define S2255_READ_IDLE         0
 206 #define S2255_READ_FRAME        1
 207 struct s2255_fw {
 208         int                   fw_loaded;
 209         int                   fw_size;
 210         struct urb            *fw_urb;
 211         atomic_t              fw_state;
 212         void                  *pfw_data;
 213         wait_queue_head_t     wait_fw;
 214         const struct firmware *fw;
 215 };
 216
 217 struct s2255_pipeinfo {
 218         u32 max_transfer_size;
 219         u32 cur_transfer_size;
 220         u8 *transfer_buffer;
 221         u32 state;
 222         void *stream_urb;
 223         void *dev;      /* back pointer to s2255_dev struct*/
 224         u32 err_count;
 225         u32 idx;
 226 };
 227
 228 struct s2255_fmt; /*forward declaration */
 229
 230 struct s2255_dev {
 231         struct video_device     vdev[MAX_CHANNELS];
 232         struct v4l2_device      v4l2_dev;
 233         atomic_t                channels; /* number of channels registered */
 234         int                     frames;
 235         struct mutex            lock;
 236         struct mutex            open_lock;
 237         int                     resources[MAX_CHANNELS];
 238         struct usb_device       *udev;
 239         struct usb_interface    *interface;
 240         u8                      read_endpoint;
 241
 242         struct s2255_dmaqueue   vidq[MAX_CHANNELS];
 243         struct timer_list       timer;
 244         struct s2255_fw *fw_data;
 245         struct s2255_pipeinfo   pipe;
 246         struct s2255_bufferi    buffer[MAX_CHANNELS];
 247         struct s2255_mode       mode[MAX_CHANNELS];
 248         /* jpeg compression */
 249         struct v4l2_jpegcompression jc[MAX_CHANNELS];
 250         /* capture parameters (for high quality mode full size) */
 251         struct v4l2_captureparm cap_parm[MAX_CHANNELS];
 252         const struct s2255_fmt  *cur_fmt[MAX_CHANNELS];
 253         int                     cur_frame[MAX_CHANNELS];
 254         int                     last_frame[MAX_CHANNELS];
 255         u32                     cc;     /* current channel */
 256         int                     b_acquire[MAX_CHANNELS];
 257         /* allocated image size */
 258         unsigned long           req_image_size[MAX_CHANNELS];
 259         /* received packet size */
 260         unsigned long           pkt_size[MAX_CHANNELS];
 261         int                     bad_payload[MAX_CHANNELS];
 262         unsigned long           frame_count[MAX_CHANNELS];
 263         int                     frame_ready;
 264         /* if JPEG image */
 265         int                     jpg_size[MAX_CHANNELS];
 266         /* if channel configured to default state */
 267         int                     chn_configured[MAX_CHANNELS];
 268         wait_queue_head_t       wait_setmode[MAX_CHANNELS];
 269         int                     setmode_ready[MAX_CHANNELS];
 270         /* video status items */
 271         int                     vidstatus[MAX_CHANNELS];
 272         wait_queue_head_t       wait_vidstatus[MAX_CHANNELS];
 273         int                     vidstatus_ready[MAX_CHANNELS];
 274         int                     chn_ready;
 275         spinlock_t              slock;
 276         /* dsp firmware version (f2255usb.bin) */
 277         int                     dsp_fw_ver;
 278         u16                     pid; /* product id */
 279 };
 280
 281 static inline struct s2255_dev *to_s2255_dev(struct v4l2_device *v4l2_dev)
 282 {
 283         return container_of(v4l2_dev, struct s2255_dev, v4l2_dev);
 284 }
 285
 286 struct s2255_fmt {
 287         char *name;
 288         u32 fourcc;
 289         int depth;
 290 };
 291
 292 /* buffer for one video frame */
 293 struct s2255_buffer {
 294         /* common v4l buffer stuff -- must be first */
 295         struct videobuf_buffer vb;
 296         const struct s2255_fmt *fmt;
 297 };
 298
 299 struct s2255_fh {
 300         struct s2255_dev        *dev;
 301         const struct s2255_fmt  *fmt;
 302         unsigned int            width;
 303         unsigned int            height;
 304         struct videobuf_queue   vb_vidq;
 305         enum v4l2_buf_type      type;
 306         int                     channel;
 307         /* mode below is the desired mode.
 308            mode in s2255_dev is the current mode that was last set */
 309         struct s2255_mode       mode;
 310         int                     resources[MAX_CHANNELS];
 311 };
 312
 313 /* current cypress EEPROM firmware version */
 314 #define S2255_CUR_USB_FWVER     ((3 << 8) | 6)
 315 /* current DSP FW version */
 316 #define S2255_CUR_DSP_FWVER     8
 317 /* Need DSP version 5+ for video status feature */
 318 #define S2255_MIN_DSP_STATUS      5
 319 #define S2255_MIN_DSP_COLORFILTER 8
 320 #define S2255_NORMS             (V4L2_STD_PAL | V4L2_STD_NTSC)
 321
 322 /* private V4L2 controls */
 323
 324 /*
 325  * The following chart displays how COLORFILTER should be set
 326  *  =========================================================
 327  *  =     fourcc              =     COLORFILTER             =
 328  *  =                         ===============================
 329  *  =                         =   0             =    1      =
 330  *  =========================================================
 331  *  =  V4L2_PIX_FMT_GREY(Y8)  = monochrome from = monochrome=
 332  *  =                         = s-video or      = composite =
 333  *  =                         = B/W camera      = input     =
 334  *  =========================================================
 335  *  =    other                = color, svideo   = color,    =
 336  *  =                         =                 = composite =
 337  *  =========================================================
 338  *
 339  * Notes:
 340  *   channels 0-3 on 2255 are composite
 341  *   channels 0-1 on 2257 are composite, 2-3 are s-video
 342  * If COLORFILTER is 0 with a composite color camera connected,
 343  * the output will appear monochrome but hatching
 344  * will occur.
 345  * COLORFILTER is different from "color killer" and "color effects"
 346  * for reasons above.
 347  */
 348 #define S2255_V4L2_YC_ON  1
 349 #define S2255_V4L2_YC_OFF 0
 350 #define V4L2_CID_PRIVATE_COLORFILTER (V4L2_CID_PRIVATE_BASE + 0)
 351
 352 /* frame prefix size (sent once every frame) */
 353 #define PREFIX_SIZE             512
 354
 355 /* Channels on box are in reverse order */
 356 static unsigned long G_chnmap[MAX_CHANNELS] = {3, 2, 1, 0};
 357
 358 static int debug;
 359 static int *s2255_debug = &debug;
 360
 361 static int s2255_start_readpipe(struct s2255_dev *dev);
 362 static void s2255_stop_readpipe(struct s2255_dev *dev);
 363 static int s2255_start_acquire(struct s2255_dev *dev, unsigned long chn);
 364 static int s2255_stop_acquire(struct s2255_dev *dev, unsigned long chn);
 365 static void s2255_fillbuff(struct s2255_dev *dev, struct s2255_buffer *buf,
 366                            int chn, int jpgsize);
 367 static int s2255_set_mode(struct s2255_dev *dev, unsigned long chn,
 368                           struct s2255_mode *mode);
 369 static int s2255_board_shutdown(struct s2255_dev *dev);
 370 static void s2255_fwload_start(struct s2255_dev *dev, int reset);
 371 static void s2255_destroy(struct s2255_dev *dev);
 372 static long s2255_vendor_req(struct s2255_dev *dev, unsigned char req,
 373                              u16 index, u16 value, void *buf,
 374                              s32 buf_len, int bOut);
 375
 376 /* dev_err macro with driver name */
 377 #define S2255_DRIVER_NAME "s2255"
 378 #define s2255_dev_err(dev, fmt, arg...)                                 \
 379                 dev_err(dev, S2255_DRIVER_NAME " - " fmt, ##arg)
 380
 381 #define dprintk(level, fmt, arg...)                                     \
 382         do {                                                            \
 383                 if (*s2255_debug >= (level)) {                          \
 384                         printk(KERN_DEBUG S2255_DRIVER_NAME             \
 385                                 ": " fmt, ##arg);                       \
 386                 }                                                       \
 387         } while (0)
 388
 389 static struct usb_driver s2255_driver;
 390
 391 /* Declare static vars that will be used as parameters */
 392 static unsigned int vid_limit = 16;     /* Video memory limit, in Mb */
 393
 394 /* start video number */
 395 static int video_nr = -1;       /* /dev/videoN, -1 for autodetect */
 396
 397 module_param(debug, int, 0644);
 398 MODULE_PARM_DESC(debug, "Debug level(0-100) default 0");
 399 module_param(vid_limit, int, 0644);
 400 MODULE_PARM_DESC(vid_limit, "video memory limit(Mb)");
 401 module_param(video_nr, int, 0644);
 402 MODULE_PARM_DESC(video_nr, "start video minor(-1 default autodetect)");
 403
 404 /* USB device table */
 405 #define USB_SENSORAY_VID        0x1943
 406 static struct usb_device_id s2255_table[] = {
 407         {USB_DEVICE(USB_SENSORAY_VID, 0x2255)},
 408         {USB_DEVICE(USB_SENSORAY_VID, 0x2257)}, /*same family as 2255*/
 409         { }                     /* Terminating entry */
 410 };
 411 MODULE_DEVICE_TABLE(usb, s2255_table);
 412
 413 #define BUFFER_TIMEOUT msecs_to_jiffies(400)
 414
 415 /* image formats.  */
 416 static const struct s2255_fmt formats[] = {
 417         {
 418                 .name = "4:2:2, planar, YUV422P",
 419                 .fourcc = V4L2_PIX_FMT_YUV422P,
 420                 .depth = 16
 421
 422         }, {
 423                 .name = "4:2:2, packed, YUYV",
 424                 .fourcc = V4L2_PIX_FMT_YUYV,
 425                 .depth = 16
 426
 427         }, {
 428                 .name = "4:2:2, packed, UYVY",
 429                 .fourcc = V4L2_PIX_FMT_UYVY,
 430                 .depth = 16
 431         }, {
 432                 .name = "JPG",
 433                 .fourcc = V4L2_PIX_FMT_JPEG,
 434                 .depth = 24
 435         }, {
 436                 .name = "8bpp GREY",
 437                 .fourcc = V4L2_PIX_FMT_GREY,
 438                 .depth = 8
 439         }
 440 };
 441
 442 static int norm_maxw(struct video_device *vdev)
 443 {
 444         return (vdev->current_norm & V4L2_STD_NTSC) ?
 445             LINE_SZ_4CIFS_NTSC : LINE_SZ_4CIFS_PAL;
 446 }
 447
 448 static int norm_maxh(struct video_device *vdev)
 449 {
 450         return (vdev->current_norm & V4L2_STD_NTSC) ?
 451             (NUM_LINES_1CIFS_NTSC * 2) : (NUM_LINES_1CIFS_PAL * 2);
 452 }
 453
 454 static int norm_minw(struct video_device *vdev)
 455 {
 456         return (vdev->current_norm & V4L2_STD_NTSC) ?
 457             LINE_SZ_1CIFS_NTSC : LINE_SZ_1CIFS_PAL;
 458 }
 459
 460 static int norm_minh(struct video_device *vdev)
 461 {
 462         return (vdev->current_norm & V4L2_STD_NTSC) ?
 463             (NUM_LINES_1CIFS_NTSC) : (NUM_LINES_1CIFS_PAL);
 464 }
 465
 466
 467 /*
 468  * TODO: fixme: move YUV reordering to hardware
 469  * converts 2255 planar format to yuyv or uyvy
 470  */
 471 static void planar422p_to_yuv_packed(const unsigned char *in,
 472                                      unsigned char *out,
 473                                      int width, int height,
 474                                      int fmt)
 475 {
 476         unsigned char *pY;
 477         unsigned char *pCb;
 478         unsigned char *pCr;
 479         unsigned long size = height * width;
 480         unsigned int i;
 481         pY = (unsigned char *)in;
 482         pCr = (unsigned char *)in + height * width;
 483         pCb = (unsigned char *)in + height * width + (height * width / 2);
 484         for (i = 0; i < size * 2; i += 4) {
 485                 out[i] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCr++;
 486                 out[i + 1] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCr++ : *pY++;
 487                 out[i + 2] = (fmt == V4L2_PIX_FMT_YUYV) ? *pY++ : *pCb++;
 488                 out[i + 3] = (fmt == V4L2_PIX_FMT_YUYV) ? *pCb++ : *pY++;
 489         }
 490         return;
 491 }
 492
 493 static void s2255_reset_dsppower(struct s2255_dev *dev)
 494 {
 495         s2255_vendor_req(dev, 0x40, 0x0b0b, 0x0b0b, NULL, 0, 1);
 496         msleep(10);
 497         s2255_vendor_req(dev, 0x50, 0x0000, 0x0000, NULL, 0, 1);
 498         return;
 499 }
 500
 501 /* kickstarts the firmware loading. from probe
 502  */
 503 static void s2255_timer(unsigned long user_data)
 504 {
 505         struct s2255_fw *data = (struct s2255_fw *)user_data;
 506         dprintk(100, "%s\n", __func__);
 507         if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
 508                 printk(KERN_ERR "s2255: can't submit urb\n");
 509                 atomic_set(&data->fw_state, S2255_FW_FAILED);
 510                 /* wake up anything waiting for the firmware */
 511                 wake_up(&data->wait_fw);
 512                 return;
 513         }
 514 }
 515
 516
 517 /* this loads the firmware asynchronously.
 518    Originally this was done synchroously in probe.
 519    But it is better to load it asynchronously here than block
 520    inside the probe function. Blocking inside probe affects boot time.
 521    FW loading is triggered by the timer in the probe function
 522 */
 523 static void s2255_fwchunk_complete(struct urb *urb)
 524 {
 525         struct s2255_fw *data = urb->context;
 526         struct usb_device *udev = urb->dev;
 527         int len;
 528         dprintk(100, "%s: udev %p urb %p", __func__, udev, urb);
 529         if (urb->status) {
 530                 dev_err(&udev->dev, "URB failed with status %d\n", urb->status);
 531                 atomic_set(&data->fw_state, S2255_FW_FAILED);
 532                 /* wake up anything waiting for the firmware */
 533                 wake_up(&data->wait_fw);
 534                 return;
 535         }
 536         if (data->fw_urb == NULL) {
 537                 s2255_dev_err(&udev->dev, "disconnected\n");
 538                 atomic_set(&data->fw_state, S2255_FW_FAILED);
 539                 /* wake up anything waiting for the firmware */
 540                 wake_up(&data->wait_fw);
 541                 return;
 542         }
 543 #define CHUNK_SIZE 512
 544         /* all USB transfers must be done with continuous kernel memory.
 545            can't allocate more than 128k in current linux kernel, so
 546            upload the firmware in chunks
 547          */
 548         if (data->fw_loaded < data->fw_size) {
 549                 len = (data->fw_loaded + CHUNK_SIZE) > data->fw_size ?
 550                     data->fw_size % CHUNK_SIZE : CHUNK_SIZE;
 551
 552                 if (len < CHUNK_SIZE)
 553                         memset(data->pfw_data, 0, CHUNK_SIZE);
 554
 555                 dprintk(100, "completed len %d, loaded %d \n", len,
 556                         data->fw_loaded);
 557
 558                 memcpy(data->pfw_data,
 559                        (char *) data->fw->data + data->fw_loaded, len);
 560
 561                 usb_fill_bulk_urb(data->fw_urb, udev, usb_sndbulkpipe(udev, 2),
 562                                   data->pfw_data, CHUNK_SIZE,
 563                                   s2255_fwchunk_complete, data);
 564                 if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
 565                         dev_err(&udev->dev, "failed submit URB\n");
 566                         atomic_set(&data->fw_state, S2255_FW_FAILED);
 567                         /* wake up anything waiting for the firmware */
 568                         wake_up(&data->wait_fw);
 569                         return;
 570                 }
 571                 data->fw_loaded += len;
 572         } else {
 573                 atomic_set(&data->fw_state, S2255_FW_LOADED_DSPWAIT);
 574                 dprintk(100, "%s: firmware upload complete\n", __func__);
 575         }
 576         return;
 577
 578 }
 579
 580 static int s2255_got_frame(struct s2255_dev *dev, int chn, int jpgsize)
 581 {
 582         struct s2255_dmaqueue *dma_q = &dev->vidq[chn];
 583         struct s2255_buffer *buf;
 584         unsigned long flags = 0;
 585         int rc = 0;
 586         spin_lock_irqsave(&dev->slock, flags);
 587         if (list_empty(&dma_q->active)) {
 588                 dprintk(1, "No active queue to serve\n");
 589                 rc = -1;
 590                 goto unlock;
 591         }
 592         buf = list_entry(dma_q->active.next,
 593                          struct s2255_buffer, vb.queue);
 594         list_del(&buf->vb.queue);
 595         do_gettimeofday(&buf->vb.ts);
 596         s2255_fillbuff(dev, buf, dma_q->channel, jpgsize);
 597         wake_up(&buf->vb.done);
 598         dprintk(2, "%s: [buf/i] [%p/%d]\n", __func__, buf, buf->vb.i);
 599 unlock:
 600         spin_unlock_irqrestore(&dev->slock, flags);
 601         return 0;
 602 }
 603
 604 static const struct s2255_fmt *format_by_fourcc(int fourcc)
 605 {
 606         unsigned int i;
 607         for (i = 0; i < ARRAY_SIZE(formats); i++) {
 608                 if (-1 == formats[i].fourcc)
 609                         continue;
 610                 if (formats[i].fourcc == fourcc)
 611                         return formats + i;
 612         }
 613         return NULL;
 614 }
 615
 616 /* video buffer vmalloc implementation based partly on VIVI driver which is
 617  *          Copyright (c) 2006 by
 618  *                  Mauro Carvalho Chehab <mchehab--a.t--infradead.org>
 619  *                  Ted Walther <ted--a.t--enumera.com>
 620  *                  John Sokol <sokol--a.t--videotechnology.com>
 621  *                  http://v4l.videotechnology.com/
 622  *
 623  */
 624 static void s2255_fillbuff(struct s2255_dev *dev, struct s2255_buffer *buf,
 625                            int chn, int jpgsize)
 626 {
 627         int pos = 0;
 628         struct timeval ts;
 629         const char *tmpbuf;
 630         char *vbuf = videobuf_to_vmalloc(&buf->vb);
 631         unsigned long last_frame;
 632         struct s2255_framei *frm;
 633
 634         if (!vbuf)
 635                 return;
 636
 637         last_frame = dev->last_frame[chn];
 638         if (last_frame != -1) {
 639                 frm = &dev->buffer[chn].frame[last_frame];
 640                 tmpbuf =
 641                     (const char *)dev->buffer[chn].frame[last_frame].lpvbits;
 642                 switch (buf->fmt->fourcc) {
 643                 case V4L2_PIX_FMT_YUYV:
 644                 case V4L2_PIX_FMT_UYVY:
 645                         planar422p_to_yuv_packed((const unsigned char *)tmpbuf,
 646                                                  vbuf, buf->vb.width,
 647                                                  buf->vb.height,
 648                                                  buf->fmt->fourcc);
 649                         break;
 650                 case V4L2_PIX_FMT_GREY:
 651                         memcpy(vbuf, tmpbuf, buf->vb.width * buf->vb.height);
 652                         break;
 653                 case V4L2_PIX_FMT_JPEG:
 654                         buf->vb.size = jpgsize;
 655                         memcpy(vbuf, tmpbuf, buf->vb.size);
 656                         break;
 657                 case V4L2_PIX_FMT_YUV422P:
 658                         memcpy(vbuf, tmpbuf,
 659                                buf->vb.width * buf->vb.height * 2);
 660                         break;
 661                 default:
 662                         printk(KERN_DEBUG "s2255: unknown format?\n");
 663                 }
 664                 dev->last_frame[chn] = -1;
 665         } else {
 666                 printk(KERN_ERR "s2255: =======no frame\n");
 667                 return;
 668
 669         }
 670         dprintk(2, "s2255fill at : Buffer 0x%08lx size= %d\n",
 671                 (unsigned long)vbuf, pos);
 672         /* tell v4l buffer was filled */
 673
 674         buf->vb.field_count = dev->frame_count[chn] * 2;
 675         do_gettimeofday(&ts);
 676         buf->vb.ts = ts;
 677         buf->vb.state = VIDEOBUF_DONE;
 678 }
 679
 680
 681 /* ------------------------------------------------------------------
 682    Videobuf operations
 683    ------------------------------------------------------------------*/
 684
 685 static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
 686                         unsigned int *size)
 687 {
 688         struct s2255_fh *fh = vq->priv_data;
 689
 690         *size = fh->width * fh->height * (fh->fmt->depth >> 3);
 691
 692         if (0 == *count)
 693                 *count = S2255_DEF_BUFS;
 694
 695         if (*size * *count > vid_limit * 1024 * 1024)
 696                 *count = (vid_limit * 1024 * 1024) / *size;
 697
 698         return 0;
 699 }
 700
 701 static void free_buffer(struct videobuf_queue *vq, struct s2255_buffer *buf)
 702 {
 703         dprintk(4, "%s\n", __func__);
 704
 705         videobuf_vmalloc_free(&buf->vb);
 706         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 707 }
 708
 709 static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
 710                           enum v4l2_field field)
 711 {
 712         struct s2255_fh *fh = vq->priv_data;
 713         struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
 714         int rc;
 715         dprintk(4, "%s, field=%d\n", __func__, field);
 716         if (fh->fmt == NULL)
 717                 return -EINVAL;
 718
 719         if ((fh->width < norm_minw(&fh->dev->vdev[fh->channel])) ||
 720             (fh->width > norm_maxw(&fh->dev->vdev[fh->channel])) ||
 721             (fh->height < norm_minh(&fh->dev->vdev[fh->channel])) ||
 722             (fh->height > norm_maxh(&fh->dev->vdev[fh->channel]))) {
 723                 dprintk(4, "invalid buffer prepare\n");
 724                 return -EINVAL;
 725         }
 726
 727         buf->vb.size = fh->width * fh->height * (fh->fmt->depth >> 3);
 728
 729         if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) {
 730                 dprintk(4, "invalid buffer prepare\n");
 731                 return -EINVAL;
 732         }
 733
 734         buf->fmt = fh->fmt;
 735         buf->vb.width = fh->width;
 736         buf->vb.height = fh->height;
 737         buf->vb.field = field;
 738
 739         if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
 740                 rc = videobuf_iolock(vq, &buf->vb, NULL);
 741                 if (rc < 0)
 742                         goto fail;
 743         }
 744
 745         buf->vb.state = VIDEOBUF_PREPARED;
 746         return 0;
 747 fail:
 748         free_buffer(vq, buf);
 749         return rc;
 750 }
 751
 752 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
 753 {
 754         struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
 755         struct s2255_fh *fh = vq->priv_data;
 756         struct s2255_dev *dev = fh->dev;
 757         struct s2255_dmaqueue *vidq = &dev->vidq[fh->channel];
 758         dprintk(1, "%s\n", __func__);
 759         buf->vb.state = VIDEOBUF_QUEUED;
 760         list_add_tail(&buf->vb.queue, &vidq->active);
 761 }
 762
 763 static void buffer_release(struct videobuf_queue *vq,
 764                            struct videobuf_buffer *vb)
 765 {
 766         struct s2255_buffer *buf = container_of(vb, struct s2255_buffer, vb);
 767         struct s2255_fh *fh = vq->priv_data;
 768         dprintk(4, "%s %d\n", __func__, fh->channel);
 769         free_buffer(vq, buf);
 770 }
 771
 772 static struct videobuf_queue_ops s2255_video_qops = {
 773         .buf_setup = buffer_setup,
 774         .buf_prepare = buffer_prepare,
 775         .buf_queue = buffer_queue,
 776         .buf_release = buffer_release,
 777 };
 778
 779
 780 static int res_get(struct s2255_dev *dev, struct s2255_fh *fh)
 781 {
 782         /* is it free? */
 783         mutex_lock(&dev->lock);
 784         if (dev->resources[fh->channel]) {
 785                 /* no, someone else uses it */
 786                 mutex_unlock(&dev->lock);
 787                 return 0;
 788         }
 789         /* it's free, grab it */
 790         dev->resources[fh->channel] = 1;
 791         fh->resources[fh->channel] = 1;
 792         dprintk(1, "s2255: res: get\n");
 793         mutex_unlock(&dev->lock);
 794         return 1;
 795 }
 796
 797 static int res_locked(struct s2255_dev *dev, struct s2255_fh *fh)
 798 {
 799         return dev->resources[fh->channel];
 800 }
 801
 802 static int res_check(struct s2255_fh *fh)
 803 {
 804         return fh->resources[fh->channel];
 805 }
 806
 807
 808 static void res_free(struct s2255_dev *dev, struct s2255_fh *fh)
 809 {
 810         mutex_lock(&dev->lock);
 811         dev->resources[fh->channel] = 0;
 812         fh->resources[fh->channel] = 0;
 813         mutex_unlock(&dev->lock);
 814         dprintk(1, "res: put\n");
 815 }
 816
 817 static int vidioc_querymenu(struct file *file, void *priv,
 818                             struct v4l2_querymenu *qmenu)
 819 {
 820         static const char *colorfilter[] = {
 821                 "Off",
 822                 "On",
 823                 NULL
 824         };
 825         if (qmenu->id == V4L2_CID_PRIVATE_COLORFILTER) {
 826                 int i;
 827                 const char **menu_items = colorfilter;
 828                 for (i = 0; i < qmenu->index && menu_items[i]; i++)
 829                         ; /* do nothing (from v4l2-common.c) */
 830                 if (menu_items[i] == NULL || menu_items[i][0] == '\0')
 831                         return -EINVAL;
 832                 strlcpy(qmenu->name, menu_items[qmenu->index],
 833                         sizeof(qmenu->name));
 834                 return 0;
 835         }
 836         return v4l2_ctrl_query_menu(qmenu, NULL, NULL);
 837 }
 838
 839 static int vidioc_querycap(struct file *file, void *priv,
 840                            struct v4l2_capability *cap)
 841 {
 842         struct s2255_fh *fh = file->private_data;
 843         struct s2255_dev *dev = fh->dev;
 844         strlcpy(cap->driver, "s2255", sizeof(cap->driver));
 845         strlcpy(cap->card, "s2255", sizeof(cap->card));
 846         usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
 847         cap->version = S2255_VERSION;
 848         cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
 849         return 0;
 850 }
 851
 852 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 853                                struct v4l2_fmtdesc *f)
 854 {
 855         int index = 0;
 856         if (f)
 857                 index = f->index;
 858
 859         if (index >= ARRAY_SIZE(formats))
 860                 return -EINVAL;
 861
 862         dprintk(4, "name %s\n", formats[index].name);
 863         strlcpy(f->description, formats[index].name, sizeof(f->description));
 864         f->pixelformat = formats[index].fourcc;
 865         return 0;
 866 }
 867
 868 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 869                             struct v4l2_format *f)
 870 {
 871         struct s2255_fh *fh = priv;
 872
 873         f->fmt.pix.width = fh->width;
 874         f->fmt.pix.height = fh->height;
 875         f->fmt.pix.field = fh->vb_vidq.field;
 876         f->fmt.pix.pixelformat = fh->fmt->fourcc;
 877         f->fmt.pix.bytesperline = f->fmt.pix.width * (fh->fmt->depth >> 3);
 878         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 879         return 0;
 880 }
 881
 882 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 883                               struct v4l2_format *f)
 884 {
 885         const struct s2255_fmt *fmt;
 886         enum v4l2_field field;
 887         int  b_any_field = 0;
 888         struct s2255_fh *fh = priv;
 889         struct s2255_dev *dev = fh->dev;
 890         int is_ntsc;
 891
 892         is_ntsc =
 893             (dev->vdev[fh->channel].current_norm & V4L2_STD_NTSC) ? 1 : 0;
 894
 895         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 896
 897         if (fmt == NULL)
 898                 return -EINVAL;
 899
 900         field = f->fmt.pix.field;
 901         if (field == V4L2_FIELD_ANY)
 902                 b_any_field = 1;
 903
 904         dprintk(50, "%s NTSC: %d suggested width: %d, height: %d\n",
 905                 __func__, is_ntsc, f->fmt.pix.width, f->fmt.pix.height);
 906         if (is_ntsc) {
 907                 /* NTSC */
 908                 if (f->fmt.pix.height >= NUM_LINES_1CIFS_NTSC * 2) {
 909                         f->fmt.pix.height = NUM_LINES_1CIFS_NTSC * 2;
 910                         if (b_any_field) {
 911                                 field = V4L2_FIELD_SEQ_TB;
 912                         } else if (!((field == V4L2_FIELD_INTERLACED) ||
 913                                       (field == V4L2_FIELD_SEQ_TB) ||
 914                                       (field == V4L2_FIELD_INTERLACED_TB))) {
 915                                 dprintk(1, "unsupported field setting\n");
 916                                 return -EINVAL;
 917                         }
 918                 } else {
 919                         f->fmt.pix.height = NUM_LINES_1CIFS_NTSC;
 920                         if (b_any_field) {
 921                                 field = V4L2_FIELD_TOP;
 922                         } else if (!((field == V4L2_FIELD_TOP) ||
 923                                       (field == V4L2_FIELD_BOTTOM))) {
 924                                 dprintk(1, "unsupported field setting\n");
 925                                 return -EINVAL;
 926                         }
 927
 928                 }
 929                 if (f->fmt.pix.width >= LINE_SZ_4CIFS_NTSC)
 930                         f->fmt.pix.width = LINE_SZ_4CIFS_NTSC;
 931                 else if (f->fmt.pix.width >= LINE_SZ_2CIFS_NTSC)
 932                         f->fmt.pix.width = LINE_SZ_2CIFS_NTSC;
 933                 else if (f->fmt.pix.width >= LINE_SZ_1CIFS_NTSC)
 934                         f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
 935                 else
 936                         f->fmt.pix.width = LINE_SZ_1CIFS_NTSC;
 937         } else {
 938                 /* PAL */
 939                 if (f->fmt.pix.height >= NUM_LINES_1CIFS_PAL * 2) {
 940                         f->fmt.pix.height = NUM_LINES_1CIFS_PAL * 2;
 941                         if (b_any_field) {
 942                                 field = V4L2_FIELD_SEQ_TB;
 943                         } else if (!((field == V4L2_FIELD_INTERLACED) ||
 944                                       (field == V4L2_FIELD_SEQ_TB) ||
 945                                       (field == V4L2_FIELD_INTERLACED_TB))) {
 946                                 dprintk(1, "unsupported field setting\n");
 947                                 return -EINVAL;
 948                         }
 949                 } else {
 950                         f->fmt.pix.height = NUM_LINES_1CIFS_PAL;
 951                         if (b_any_field) {
 952                                 field = V4L2_FIELD_TOP;
 953                         } else if (!((field == V4L2_FIELD_TOP) ||
 954                                      (field == V4L2_FIELD_BOTTOM))) {
 955                                 dprintk(1, "unsupported field setting\n");
 956                                 return -EINVAL;
 957                         }
 958                 }
 959                 if (f->fmt.pix.width >= LINE_SZ_4CIFS_PAL) {
 960                         f->fmt.pix.width = LINE_SZ_4CIFS_PAL;
 961                         field = V4L2_FIELD_SEQ_TB;
 962                 } else if (f->fmt.pix.width >= LINE_SZ_2CIFS_PAL) {
 963                         f->fmt.pix.width = LINE_SZ_2CIFS_PAL;
 964                         field = V4L2_FIELD_TOP;
 965                 } else if (f->fmt.pix.width >= LINE_SZ_1CIFS_PAL) {
 966                         f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
 967                         field = V4L2_FIELD_TOP;
 968                 } else {
 969                         f->fmt.pix.width = LINE_SZ_1CIFS_PAL;
 970                         field = V4L2_FIELD_TOP;
 971                 }
 972         }
 973         f->fmt.pix.field = field;
 974         f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3;
 975         f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
 976         dprintk(50, "%s: set width %d height %d field %d\n", __func__,
 977                 f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
 978         return 0;
 979 }
 980
 981 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 982                             struct v4l2_format *f)
 983 {
 984         struct s2255_fh *fh = priv;
 985         const struct s2255_fmt *fmt;
 986         struct videobuf_queue *q = &fh->vb_vidq;
 987         int ret;
 988         int norm;
 989
 990         ret = vidioc_try_fmt_vid_cap(file, fh, f);
 991
 992         if (ret < 0)
 993                 return ret;
 994
 995         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 996
 997         if (fmt == NULL)
 998                 return -EINVAL;
 999
1000         mutex_lock(&q->vb_lock);
1001
1002         if (videobuf_queue_is_busy(&fh->vb_vidq)) {
1003                 dprintk(1, "queue busy\n");
1004                 ret = -EBUSY;
1005                 goto out_s_fmt;
1006         }
1007
1008         if (res_locked(fh->dev, fh)) {
1009                 dprintk(1, "%s: channel busy\n", __func__);
1010                 ret = -EBUSY;
1011                 goto out_s_fmt;
1012         }
1013
1014         fh->fmt = fmt;
1015         fh->width = f->fmt.pix.width;
1016         fh->height = f->fmt.pix.height;
1017         fh->vb_vidq.field = f->fmt.pix.field;
1018         fh->type = f->type;
1019         norm = norm_minw(&fh->dev->vdev[fh->channel]);
1020         if (fh->width > norm_minw(&fh->dev->vdev[fh->channel])) {
1021                 if (fh->height > norm_minh(&fh->dev->vdev[fh->channel])) {
1022                         if (fh->dev->cap_parm[fh->channel].capturemode &
1023                             V4L2_MODE_HIGHQUALITY)
1024                                 fh->mode.scale = SCALE_4CIFSI;
1025                         else
1026                                 fh->mode.scale = SCALE_4CIFS;
1027                 } else
1028                         fh->mode.scale = SCALE_2CIFS;
1029
1030         } else {
1031                 fh->mode.scale = SCALE_1CIFS;
1032         }
1033
1034         /* color mode */
1035         switch (fh->fmt->fourcc) {
1036         case V4L2_PIX_FMT_GREY:
1037                 fh->mode.color &= ~MASK_COLOR;
1038                 fh->mode.color |= COLOR_Y8;
1039                 break;
1040         case V4L2_PIX_FMT_JPEG:
1041                 fh->mode.color &= ~MASK_COLOR;
1042                 fh->mode.color |= COLOR_JPG;
1043                 fh->mode.color |= (fh->dev->jc[fh->channel].quality << 8);
1044                 break;
1045         case V4L2_PIX_FMT_YUV422P:
1046                 fh->mode.color &= ~MASK_COLOR;
1047                 fh->mode.color |= COLOR_YUVPL;
1048                 break;
1049         case V4L2_PIX_FMT_YUYV:
1050         case V4L2_PIX_FMT_UYVY:
1051         default:
1052                 fh->mode.color &= ~MASK_COLOR;
1053                 fh->mode.color |= COLOR_YUVPK;
1054                 break;
1055         }
1056         ret = 0;
1057 out_s_fmt:
1058         mutex_unlock(&q->vb_lock);
1059         return ret;
1060 }
1061
1062 static int vidioc_reqbufs(struct file *file, void *priv,
1063                           struct v4l2_requestbuffers *p)
1064 {
1065         int rc;
1066         struct s2255_fh *fh = priv;
1067         rc = videobuf_reqbufs(&fh->vb_vidq, p);
1068         return rc;
1069 }
1070
1071 static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
1072 {
1073         int rc;
1074         struct s2255_fh *fh = priv;
1075         rc = videobuf_querybuf(&fh->vb_vidq, p);
1076         return rc;
1077 }
1078
1079 static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1080 {
1081         int rc;
1082         struct s2255_fh *fh = priv;
1083         rc = videobuf_qbuf(&fh->vb_vidq, p);
1084         return rc;
1085 }
1086
1087 static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
1088 {
1089         int rc;
1090         struct s2255_fh *fh = priv;
1091         rc = videobuf_dqbuf(&fh->vb_vidq, p, file->f_flags & O_NONBLOCK);
1092         return rc;
1093 }
1094
1095 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1096 static int vidioc_cgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
1097 {
1098         struct s2255_fh *fh = priv;
1099
1100         return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
1101 }
1102 #endif
1103
1104 /* write to the configuration pipe, synchronously */
1105 static int s2255_write_config(struct usb_device *udev, unsigned char *pbuf,
1106                               int size)
1107 {
1108         int pipe;
1109         int done;
1110         long retval = -1;
1111         if (udev) {
1112                 pipe = usb_sndbulkpipe(udev, S2255_CONFIG_EP);
1113                 retval = usb_bulk_msg(udev, pipe, pbuf, size, &done, 500);
1114         }
1115         return retval;
1116 }
1117
1118 static u32 get_transfer_size(struct s2255_mode *mode)
1119 {
1120         int linesPerFrame = LINE_SZ_DEF;
1121         int pixelsPerLine = NUM_LINES_DEF;
1122         u32 outImageSize;
1123         u32 usbInSize;
1124         unsigned int mask_mult;
1125
1126         if (mode == NULL)
1127                 return 0;
1128
1129         if (mode->format == FORMAT_NTSC) {
1130                 switch (mode->scale) {
1131                 case SCALE_4CIFS:
1132                 case SCALE_4CIFSI:
1133                         linesPerFrame = NUM_LINES_4CIFS_NTSC * 2;
1134                         pixelsPerLine = LINE_SZ_4CIFS_NTSC;
1135                         break;
1136                 case SCALE_2CIFS:
1137                         linesPerFrame = NUM_LINES_2CIFS_NTSC;
1138                         pixelsPerLine = LINE_SZ_2CIFS_NTSC;
1139                         break;
1140                 case SCALE_1CIFS:
1141                         linesPerFrame = NUM_LINES_1CIFS_NTSC;
1142                         pixelsPerLine = LINE_SZ_1CIFS_NTSC;
1143                         break;
1144                 default:
1145                         break;
1146                 }
1147         } else if (mode->format == FORMAT_PAL) {
1148                 switch (mode->scale) {
1149                 case SCALE_4CIFS:
1150                 case SCALE_4CIFSI:
1151                         linesPerFrame = NUM_LINES_4CIFS_PAL * 2;
1152                         pixelsPerLine = LINE_SZ_4CIFS_PAL;
1153                         break;
1154                 case SCALE_2CIFS:
1155                         linesPerFrame = NUM_LINES_2CIFS_PAL;
1156                         pixelsPerLine = LINE_SZ_2CIFS_PAL;
1157                         break;
1158                 case SCALE_1CIFS:
1159                         linesPerFrame = NUM_LINES_1CIFS_PAL;
1160                         pixelsPerLine = LINE_SZ_1CIFS_PAL;
1161                         break;
1162                 default:
1163                         break;
1164                 }
1165         }
1166         outImageSize = linesPerFrame * pixelsPerLine;
1167         if ((mode->color & MASK_COLOR) != COLOR_Y8) {
1168                 /* 2 bytes/pixel if not monochrome */
1169                 outImageSize *= 2;
1170         }
1171
1172         /* total bytes to send including prefix and 4K padding;
1173            must be a multiple of USB_READ_SIZE */
1174         usbInSize = outImageSize + PREFIX_SIZE; /* always send prefix */
1175         mask_mult = 0xffffffffUL - DEF_USB_BLOCK + 1;
1176         /* if size not a multiple of USB_READ_SIZE */
1177         if (usbInSize & ~mask_mult)
1178                 usbInSize = (usbInSize & mask_mult) + (DEF_USB_BLOCK);
1179         return usbInSize;
1180 }
1181
1182 static void s2255_print_cfg(struct s2255_dev *sdev, struct s2255_mode *mode)
1183 {
1184         struct device *dev = &sdev->udev->dev;
1185         dev_info(dev, "------------------------------------------------\n");
1186         dev_info(dev, "format: %d\nscale %d\n", mode->format, mode->scale);
1187         dev_info(dev, "fdec: %d\ncolor %d\n", mode->fdec, mode->color);
1188         dev_info(dev, "bright: 0x%x\n", mode->bright);
1189         dev_info(dev, "------------------------------------------------\n");
1190 }
1191
1192 /*
1193  * set mode is the function which controls the DSP.
1194  * the restart parameter in struct s2255_mode should be set whenever
1195  * the image size could change via color format, video system or image
1196  * size.
1197  * When the restart parameter is set, we sleep for ONE frame to allow the
1198  * DSP time to get the new frame
1199  */
1200 static int s2255_set_mode(struct s2255_dev *dev, unsigned long chn,
1201                           struct s2255_mode *mode)
1202 {
1203         int res;
1204         __le32 *buffer;
1205         unsigned long chn_rev;
1206         mutex_lock(&dev->lock);
1207         chn_rev = G_chnmap[chn];
1208         dprintk(3, "%s channel %lu\n", __func__, chn);
1209         /* if JPEG, set the quality */
1210         if ((mode->color & MASK_COLOR) == COLOR_JPG) {
1211                 mode->color &= ~MASK_COLOR;
1212                 mode->color |= COLOR_JPG;
1213                 mode->color &= ~MASK_JPG_QUALITY;
1214                 mode->color |= (dev->jc[chn].quality << 8);
1215         }
1216         /* save the mode */
1217         dev->mode[chn] = *mode;
1218         dev->req_image_size[chn] = get_transfer_size(mode);
1219         dprintk(1, "%s: reqsize %ld\n", __func__, dev->req_image_size[chn]);
1220         buffer = kzalloc(512, GFP_KERNEL);
1221         if (buffer == NULL) {
1222                 dev_err(&dev->udev->dev, "out of mem\n");
1223                 mutex_unlock(&dev->lock);
1224                 return -ENOMEM;
1225         }
1226         /* set the mode */
1227         buffer[0] = IN_DATA_TOKEN;
1228         buffer[1] = (__le32) cpu_to_le32(chn_rev);
1229         buffer[2] = CMD_SET_MODE;
1230         memcpy(&buffer[3], &dev->mode[chn], sizeof(struct s2255_mode));
1231         dev->setmode_ready[chn] = 0;
1232         res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
1233         if (debug)
1234                 s2255_print_cfg(dev, mode);
1235         kfree(buffer);
1236         /* wait at least 3 frames before continuing */
1237         if (mode->restart) {
1238                 wait_event_timeout(dev->wait_setmode[chn],
1239                                    (dev->setmode_ready[chn] != 0),
1240                                    msecs_to_jiffies(S2255_SETMODE_TIMEOUT));
1241                 if (dev->setmode_ready[chn] != 1) {
1242                         printk(KERN_DEBUG "s2255: no set mode response\n");
1243                         res = -EFAULT;
1244                 }
1245         }
1246         /* clear the restart flag */
1247         dev->mode[chn].restart = 0;
1248         mutex_unlock(&dev->lock);
1249         dprintk(1, "%s chn %lu, result: %d\n", __func__, chn, res);
1250         return res;
1251 }
1252
1253 static int s2255_cmd_status(struct s2255_dev *dev, unsigned long chn,
1254                             u32 *pstatus)
1255 {
1256         int res;
1257         __le32 *buffer;
1258         u32 chn_rev;
1259         mutex_lock(&dev->lock);
1260         chn_rev = G_chnmap[chn];
1261         dprintk(4, "%s chan %lu\n", __func__, chn);
1262         buffer = kzalloc(512, GFP_KERNEL);
1263         if (buffer == NULL) {
1264                 dev_err(&dev->udev->dev, "out of mem\n");
1265                 mutex_unlock(&dev->lock);
1266                 return -ENOMEM;
1267         }
1268         /* form the get vid status command */
1269         buffer[0] = IN_DATA_TOKEN;
1270         buffer[1] = (__le32) cpu_to_le32(chn_rev);
1271         buffer[2] = CMD_STATUS;
1272         *pstatus = 0;
1273         dev->vidstatus_ready[chn] = 0;
1274         res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
1275         kfree(buffer);
1276         wait_event_timeout(dev->wait_vidstatus[chn],
1277                            (dev->vidstatus_ready[chn] != 0),
1278                            msecs_to_jiffies(S2255_VIDSTATUS_TIMEOUT));
1279         if (dev->vidstatus_ready[chn] != 1) {
1280                 printk(KERN_DEBUG "s2255: no vidstatus response\n");
1281                 res = -EFAULT;
1282         }
1283         *pstatus = dev->vidstatus[chn];
1284         dprintk(4, "%s, vid status %d\n", __func__, *pstatus);
1285         mutex_unlock(&dev->lock);
1286         return res;
1287 }
1288
1289 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
1290 {
1291         int res;
1292         struct s2255_fh *fh = priv;
1293         struct s2255_dev *dev = fh->dev;
1294         struct s2255_mode *new_mode;
1295         struct s2255_mode *old_mode;
1296         int chn;
1297         int j;
1298         dprintk(4, "%s\n", __func__);
1299         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1300                 dev_err(&dev->udev->dev, "invalid fh type0\n");
1301                 return -EINVAL;
1302         }
1303         if (i != fh->type) {
1304                 dev_err(&dev->udev->dev, "invalid fh type1\n");
1305                 return -EINVAL;
1306         }
1307
1308         if (!res_get(dev, fh)) {
1309                 s2255_dev_err(&dev->udev->dev, "stream busy\n");
1310                 return -EBUSY;
1311         }
1312
1313         /* send a set mode command everytime with restart.
1314            in case we switch resolutions or other parameters */
1315         chn = fh->channel;
1316         new_mode = &fh->mode;
1317         old_mode = &fh->dev->mode[chn];
1318
1319         if ((new_mode->color & MASK_COLOR) != (old_mode->color & MASK_COLOR))
1320                 new_mode->restart = 1;
1321         else if (new_mode->scale != old_mode->scale)
1322                 new_mode->restart = 1;
1323         else if (new_mode->format != old_mode->format)
1324                 new_mode->restart = 1;
1325
1326         s2255_set_mode(dev, chn, new_mode);
1327         new_mode->restart = 0;
1328         *old_mode = *new_mode;
1329         dev->cur_fmt[chn] = fh->fmt;
1330         dev->last_frame[chn] = -1;
1331         dev->bad_payload[chn] = 0;
1332         dev->cur_frame[chn] = 0;
1333         dev->frame_count[chn] = 0;
1334         for (j = 0; j < SYS_FRAMES; j++) {
1335                 dev->buffer[chn].frame[j].ulState = S2255_READ_IDLE;
1336                 dev->buffer[chn].frame[j].cur_size = 0;
1337         }
1338         res = videobuf_streamon(&fh->vb_vidq);
1339         if (res == 0) {
1340                 s2255_start_acquire(dev, chn);
1341                 dev->b_acquire[chn] = 1;
1342         } else {
1343                 res_free(dev, fh);
1344         }
1345         return res;
1346 }
1347
1348 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1349 {
1350         struct s2255_fh *fh = priv;
1351         struct s2255_dev *dev = fh->dev;
1352         dprintk(4, "%s\n, channel: %d", __func__, fh->channel);
1353         if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1354                 printk(KERN_ERR "invalid fh type0\n");
1355                 return -EINVAL;
1356         }
1357         if (i != fh->type) {
1358                 printk(KERN_ERR "invalid type i\n");
1359                 return -EINVAL;
1360         }
1361         s2255_stop_acquire(dev, fh->channel);
1362         videobuf_streamoff(&fh->vb_vidq);
1363         res_free(dev, fh);
1364         return 0;
1365 }
1366
1367 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
1368 {
1369         struct s2255_fh *fh = priv;
1370         struct s2255_mode *mode;
1371         struct videobuf_queue *q = &fh->vb_vidq;
1372         int ret = 0;
1373         mutex_lock(&q->vb_lock);
1374         if (videobuf_queue_is_busy(q)) {
1375                 dprintk(1, "queue busy\n");
1376                 ret = -EBUSY;
1377                 goto out_s_std;
1378         }
1379         if (res_locked(fh->dev, fh)) {
1380                 dprintk(1, "can't change standard after started\n");
1381                 ret = -EBUSY;
1382                 goto out_s_std;
1383         }
1384         mode = &fh->mode;
1385         if (*i & V4L2_STD_NTSC) {
1386                 dprintk(4, "%s NTSC\n", __func__);
1387                 /* if changing format, reset frame decimation/intervals */
1388                 if (mode->format != FORMAT_NTSC) {
1389                         mode->format = FORMAT_NTSC;
1390                         mode->fdec = FDEC_1;
1391                 }
1392         } else if (*i & V4L2_STD_PAL) {
1393                 dprintk(4, "%s PAL\n", __func__);
1394                 mode->format = FORMAT_PAL;
1395                 if (mode->format != FORMAT_PAL) {
1396                         mode->format = FORMAT_PAL;
1397                         mode->fdec = FDEC_1;
1398                 }
1399         } else {
1400                 ret = -EINVAL;
1401         }
1402 out_s_std:
1403         mutex_unlock(&q->vb_lock);
1404         return ret;
1405 }
1406
1407 /* Sensoray 2255 is a multiple channel capture device.
1408    It does not have a "crossbar" of inputs.
1409    We use one V4L device per channel. The user must
1410    be aware that certain combinations are not allowed.
1411    For instance, you cannot do full FPS on more than 2 channels(2 videodevs)
1412    at once in color(you can do full fps on 4 channels with greyscale.
1413 */
1414 static int vidioc_enum_input(struct file *file, void *priv,
1415                              struct v4l2_input *inp)
1416 {
1417         struct s2255_fh *fh = priv;
1418         struct s2255_dev *dev = fh->dev;
1419         u32 status = 0;
1420         if (inp->index != 0)
1421                 return -EINVAL;
1422         inp->type = V4L2_INPUT_TYPE_CAMERA;
1423         inp->std = S2255_NORMS;
1424         inp->status = 0;
1425         if (dev->dsp_fw_ver >= S2255_MIN_DSP_STATUS) {
1426                 int rc;
1427                 rc = s2255_cmd_status(dev, fh->channel, &status);
1428                 dprintk(4, "s2255_cmd_status rc: %d status %x\n", rc, status);
1429                 if (rc == 0)
1430                         inp->status =  (status & 0x01) ? 0
1431                                 : V4L2_IN_ST_NO_SIGNAL;
1432         }
1433         switch (dev->pid) {
1434         case 0x2255:
1435         default:
1436                 strlcpy(inp->name, "Composite", sizeof(inp->name));
1437                 break;
1438         case 0x2257:
1439                 strlcpy(inp->name, (fh->channel < 2) ? "Composite" : "S-Video",
1440                         sizeof(inp->name));
1441                 break;
1442         }
1443         return 0;
1444 }
1445
1446 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1447 {
1448         *i = 0;
1449         return 0;
1450 }
1451 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1452 {
1453         if (i > 0)
1454                 return -EINVAL;
1455         return 0;
1456 }
1457
1458 /* --- controls ---------------------------------------------- */
1459 static int vidioc_queryctrl(struct file *file, void *priv,
1460                             struct v4l2_queryctrl *qc)
1461 {
1462         struct s2255_fh *fh = priv;
1463         struct s2255_dev *dev = fh->dev;
1464         switch (qc->id) {
1465         case V4L2_CID_BRIGHTNESS:
1466                 v4l2_ctrl_query_fill(qc, -127, 127, 1, DEF_BRIGHT);
1467                 break;
1468         case V4L2_CID_CONTRAST:
1469                 v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_CONTRAST);
1470                 break;
1471         case V4L2_CID_SATURATION:
1472                 v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_SATURATION);
1473                 break;
1474         case V4L2_CID_HUE:
1475                 v4l2_ctrl_query_fill(qc, 0, 255, 1, DEF_HUE);
1476                 break;
1477         case V4L2_CID_PRIVATE_COLORFILTER:
1478                 if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
1479                         return -EINVAL;
1480                 if ((dev->pid == 0x2257) && (fh->channel > 1))
1481                         return -EINVAL;
1482                 strlcpy(qc->name, "Color Filter", sizeof(qc->name));
1483                 qc->type = V4L2_CTRL_TYPE_MENU;
1484                 qc->minimum = 0;
1485                 qc->maximum = 1;
1486                 qc->step = 1;
1487                 qc->default_value = 1;
1488                 qc->flags = 0;
1489                 break;
1490         default:
1491                 return -EINVAL;
1492         }
1493         dprintk(4, "%s, id %d\n", __func__, qc->id);
1494         return 0;
1495 }
1496
1497 static int vidioc_g_ctrl(struct file *file, void *priv,
1498                          struct v4l2_control *ctrl)
1499 {
1500         struct s2255_fh *fh = priv;
1501         struct s2255_dev *dev = fh->dev;
1502         switch (ctrl->id) {
1503         case V4L2_CID_BRIGHTNESS:
1504                 ctrl->value = fh->mode.bright;
1505                 break;
1506         case V4L2_CID_CONTRAST:
1507                 ctrl->value = fh->mode.contrast;
1508                 break;
1509         case V4L2_CID_SATURATION:
1510                 ctrl->value = fh->mode.saturation;
1511                 break;
1512         case V4L2_CID_HUE:
1513                 ctrl->value = fh->mode.hue;
1514                 break;
1515         case V4L2_CID_PRIVATE_COLORFILTER:
1516                 if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
1517                         return -EINVAL;
1518                 if ((dev->pid == 0x2257) && (fh->channel > 1))
1519                         return -EINVAL;
1520                 ctrl->value = !((fh->mode.color & MASK_INPUT_TYPE) >> 16);
1521                 break;
1522         default:
1523                 return -EINVAL;
1524         }
1525         dprintk(4, "%s, id %d val %d\n", __func__, ctrl->id, ctrl->value);
1526         return 0;
1527 }
1528
1529 static int vidioc_s_ctrl(struct file *file, void *priv,
1530                          struct v4l2_control *ctrl)
1531 {
1532         struct s2255_fh *fh = priv;
1533         struct s2255_dev *dev = fh->dev;
1534         struct s2255_mode *mode;
1535         mode = &fh->mode;
1536         dprintk(4, "%s\n", __func__);
1537         /* update the mode to the corresponding value */
1538         switch (ctrl->id) {
1539         case V4L2_CID_BRIGHTNESS:
1540                 mode->bright = ctrl->value;
1541                 break;
1542         case V4L2_CID_CONTRAST:
1543                 mode->contrast = ctrl->value;
1544                 break;
1545         case V4L2_CID_HUE:
1546                 mode->hue = ctrl->value;
1547                 break;
1548         case V4L2_CID_SATURATION:
1549                 mode->saturation = ctrl->value;
1550                 break;
1551         case V4L2_CID_PRIVATE_COLORFILTER:
1552                 if (dev->dsp_fw_ver < S2255_MIN_DSP_COLORFILTER)
1553                         return -EINVAL;
1554                 if ((dev->pid == 0x2257) && (fh->channel > 1))
1555                         return -EINVAL;
1556                 mode->color &= ~MASK_INPUT_TYPE;
1557                 mode->color |= ((ctrl->value ? 0 : 1) << 16);
1558                 break;
1559         default:
1560                 return -EINVAL;
1561         }
1562         mode->restart = 0;
1563         /* set mode here.  Note: stream does not need restarted.
1564            some V4L programs restart stream unnecessarily
1565            after a s_crtl.
1566         */
1567         s2255_set_mode(dev, fh->channel, mode);
1568         return 0;
1569 }
1570
1571 static int vidioc_g_jpegcomp(struct file *file, void *priv,
1572                          struct v4l2_jpegcompression *jc)
1573 {
1574         struct s2255_fh *fh = priv;
1575         struct s2255_dev *dev = fh->dev;
1576         *jc = dev->jc[fh->channel];
1577         dprintk(2, "%s: quality %d\n", __func__, jc->quality);
1578         return 0;
1579 }
1580
1581 static int vidioc_s_jpegcomp(struct file *file, void *priv,
1582                          struct v4l2_jpegcompression *jc)
1583 {
1584         struct s2255_fh *fh = priv;
1585         struct s2255_dev *dev = fh->dev;
1586         if (jc->quality < 0 || jc->quality > 100)
1587                 return -EINVAL;
1588         dev->jc[fh->channel].quality = jc->quality;
1589         dprintk(2, "%s: quality %d\n", __func__, jc->quality);
1590         return 0;
1591 }
1592
1593 static int vidioc_g_parm(struct file *file, void *priv,
1594                          struct v4l2_streamparm *sp)
1595 {
1596         struct s2255_fh *fh = priv;
1597         struct s2255_dev *dev = fh->dev;
1598         __u32 def_num, def_dem;
1599         if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1600                 return -EINVAL;
1601         memset(sp, 0, sizeof(struct v4l2_streamparm));
1602         sp->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
1603         sp->parm.capture.capturemode = dev->cap_parm[fh->channel].capturemode;
1604         def_num = (fh->mode.format == FORMAT_NTSC) ? 1001 : 1000;
1605         def_dem = (fh->mode.format == FORMAT_NTSC) ? 30000 : 25000;
1606         sp->parm.capture.timeperframe.denominator = def_dem;
1607         switch (fh->mode.fdec) {
1608         default:
1609         case FDEC_1:
1610                 sp->parm.capture.timeperframe.numerator = def_num;
1611                 break;
1612         case FDEC_2:
1613                 sp->parm.capture.timeperframe.numerator = def_num * 2;
1614                 break;
1615         case FDEC_3:
1616                 sp->parm.capture.timeperframe.numerator = def_num * 3;
1617                 break;
1618         case FDEC_5:
1619                 sp->parm.capture.timeperframe.numerator = def_num * 5;
1620                 break;
1621         }
1622         dprintk(4, "%s capture mode, %d timeperframe %d/%d\n", __func__,
1623                 sp->parm.capture.capturemode,
1624                 sp->parm.capture.timeperframe.numerator,
1625                 sp->parm.capture.timeperframe.denominator);
1626         return 0;
1627 }
1628
1629 static int vidioc_s_parm(struct file *file, void *priv,
1630                          struct v4l2_streamparm *sp)
1631 {
1632         struct s2255_fh *fh = priv;
1633         struct s2255_dev *dev = fh->dev;
1634         int fdec = FDEC_1;
1635         __u32 def_num, def_dem;
1636         if (sp->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1637                 return -EINVAL;
1638         /* high quality capture mode requires a stream restart */
1639         if (dev->cap_parm[fh->channel].capturemode
1640             != sp->parm.capture.capturemode && res_locked(fh->dev, fh))
1641                 return -EBUSY;
1642         def_num = (fh->mode.format == FORMAT_NTSC) ? 1001 : 1000;
1643         def_dem = (fh->mode.format == FORMAT_NTSC) ? 30000 : 25000;
1644         if (def_dem != sp->parm.capture.timeperframe.denominator)
1645                 sp->parm.capture.timeperframe.numerator = def_num;
1646         else if (sp->parm.capture.timeperframe.numerator <= def_num)
1647                 sp->parm.capture.timeperframe.numerator = def_num;
1648         else if (sp->parm.capture.timeperframe.numerator <= (def_num * 2)) {
1649                 sp->parm.capture.timeperframe.numerator = def_num * 2;
1650                 fdec = FDEC_2;
1651         } else if (sp->parm.capture.timeperframe.numerator <= (def_num * 3)) {
1652                 sp->parm.capture.timeperframe.numerator = def_num * 3;
1653                 fdec = FDEC_3;
1654         } else {
1655                 sp->parm.capture.timeperframe.numerator = def_num * 5;
1656                 fdec = FDEC_5;
1657         }
1658         fh->mode.fdec = fdec;
1659         sp->parm.capture.timeperframe.denominator = def_dem;
1660         s2255_set_mode(dev, fh->channel, &fh->mode);
1661         dprintk(4, "%s capture mode, %d timeperframe %d/%d, fdec %d\n",
1662                 __func__,
1663                 sp->parm.capture.capturemode,
1664                 sp->parm.capture.timeperframe.numerator,
1665                 sp->parm.capture.timeperframe.denominator, fdec);
1666         return 0;
1667 }
1668
1669 static int vidioc_enum_frameintervals(struct file *file, void *priv,
1670                             struct v4l2_frmivalenum *fe)
1671 {
1672         int is_ntsc = 0;
1673 #define NUM_FRAME_ENUMS 4
1674         int frm_dec[NUM_FRAME_ENUMS] = {1, 2, 3, 5};
1675         if (fe->index < 0 || fe->index >= NUM_FRAME_ENUMS)
1676                 return -EINVAL;
1677         switch (fe->width) {
1678         case 640:
1679                 if (fe->height != 240 && fe->height != 480)
1680                         return -EINVAL;
1681                 is_ntsc = 1;
1682                 break;
1683         case 320:
1684                 if (fe->height != 240)
1685                         return -EINVAL;
1686                 is_ntsc = 1;
1687                 break;
1688         case 704:
1689                 if (fe->height != 288 && fe->height != 576)
1690                         return -EINVAL;
1691                 break;
1692         case 352:
1693                 if (fe->height != 288)
1694                         return -EINVAL;
1695                 break;
1696         default:
1697                 return -EINVAL;
1698         }
1699         fe->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1700         fe->discrete.denominator = is_ntsc ? 30000 : 25000;
1701         fe->discrete.numerator = (is_ntsc ? 1001 : 1000) * frm_dec[fe->index];
1702         dprintk(4, "%s discrete %d/%d\n", __func__, fe->discrete.numerator,
1703                 fe->discrete.denominator);
1704         return 0;
1705 }
1706
1707 static int s2255_open(struct file *file)
1708 {
1709         struct video_device *vdev = video_devdata(file);
1710         struct s2255_dev *dev = video_drvdata(file);
1711         struct s2255_fh *fh;
1712         enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1713         int i = 0;
1714         int cur_channel = -1;
1715         int state;
1716         dprintk(1, "s2255: open called (dev=%s)\n",
1717                 video_device_node_name(vdev));
1718
1719         for (i = 0; i < MAX_CHANNELS; i++) {
1720                 if (&dev->vdev[i] == vdev) {
1721                         cur_channel = i;
1722                         break;
1723                 }
1724         }
1725         if (i == MAX_CHANNELS)
1726                 return -ENODEV;
1727
1728         /*
1729          * open lock necessary to prevent multiple instances
1730          * of v4l-conf (or other programs) from simultaneously
1731          * reloading firmware.
1732          */
1733         mutex_lock(&dev->open_lock);
1734         state = atomic_read(&dev->fw_data->fw_state);
1735         switch (state) {
1736         case S2255_FW_DISCONNECTING:
1737                 mutex_unlock(&dev->open_lock);
1738                 return -ENODEV;
1739         case S2255_FW_FAILED:
1740                 s2255_dev_err(&dev->udev->dev,
1741                         "firmware load failed. retrying.\n");
1742                 s2255_fwload_start(dev, 1);
1743                 wait_event_timeout(dev->fw_data->wait_fw,
1744                                    ((atomic_read(&dev->fw_data->fw_state)
1745                                      == S2255_FW_SUCCESS) ||
1746                                     (atomic_read(&dev->fw_data->fw_state)
1747                                      == S2255_FW_DISCONNECTING)),
1748                                    msecs_to_jiffies(S2255_LOAD_TIMEOUT));
1749                 /* state may have changed, re-read */
1750                 state = atomic_read(&dev->fw_data->fw_state);
1751                 break;
1752         case S2255_FW_NOTLOADED:
1753         case S2255_FW_LOADED_DSPWAIT:
1754                 /* give S2255_LOAD_TIMEOUT time for firmware to load in case
1755                    driver loaded and then device immediately opened */
1756                 printk(KERN_INFO "%s waiting for firmware load\n", __func__);
1757                 wait_event_timeout(dev->fw_data->wait_fw,
1758                                    ((atomic_read(&dev->fw_data->fw_state)
1759                                      == S2255_FW_SUCCESS) ||
1760                                     (atomic_read(&dev->fw_data->fw_state)
1761                                      == S2255_FW_DISCONNECTING)),
1762                                    msecs_to_jiffies(S2255_LOAD_TIMEOUT));
1763                 /* state may have changed, re-read */
1764                 state = atomic_read(&dev->fw_data->fw_state);
1765                 break;
1766         case S2255_FW_SUCCESS:
1767         default:
1768                 break;
1769         }
1770         /* state may have changed in above switch statement */
1771         switch (state) {
1772         case S2255_FW_SUCCESS:
1773                 break;
1774         case S2255_FW_FAILED:
1775                 printk(KERN_INFO "2255 firmware load failed.\n");
1776                 mutex_unlock(&dev->open_lock);
1777                 return -ENODEV;
1778         case S2255_FW_DISCONNECTING:
1779                 printk(KERN_INFO "%s: disconnecting\n", __func__);
1780                 mutex_unlock(&dev->open_lock);
1781                 return -ENODEV;
1782         case S2255_FW_LOADED_DSPWAIT:
1783         case S2255_FW_NOTLOADED:
1784                 printk(KERN_INFO "%s: firmware not loaded yet"
1785                        "please try again later\n",
1786                        __func__);
1787                 /*
1788                  * Timeout on firmware load means device unusable.
1789                  * Set firmware failure state.
1790                  * On next s2255_open the firmware will be reloaded.
1791                  */
1792                 atomic_set(&dev->fw_data->fw_state,
1793                            S2255_FW_FAILED);
1794                 mutex_unlock(&dev->open_lock);
1795                 return -EAGAIN;
1796         default:
1797                 printk(KERN_INFO "%s: unknown state\n", __func__);
1798                 mutex_unlock(&dev->open_lock);
1799                 return -EFAULT;
1800         }
1801         mutex_unlock(&dev->open_lock);
1802         /* allocate + initialize per filehandle data */
1803         fh = kzalloc(sizeof(*fh), GFP_KERNEL);
1804         if (NULL == fh)
1805                 return -ENOMEM;
1806         file->private_data = fh;
1807         fh->dev = dev;
1808         fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1809         fh->mode = dev->mode[cur_channel];
1810         fh->fmt = dev->cur_fmt[cur_channel];
1811         /* default 4CIF NTSC */
1812         fh->width = LINE_SZ_4CIFS_NTSC;
1813         fh->height = NUM_LINES_4CIFS_NTSC * 2;
1814         fh->channel = cur_channel;
1815         /* configure channel to default state */
1816         if (!dev->chn_configured[cur_channel]) {
1817                 s2255_set_mode(dev, cur_channel, &fh->mode);
1818                 dev->chn_configured[cur_channel] = 1;
1819         }
1820         dprintk(1, "%s: dev=%s type=%s\n", __func__,
1821                 video_device_node_name(vdev), v4l2_type_names[type]);
1822         dprintk(2, "%s: fh=0x%08lx, dev=0x%08lx, vidq=0x%08lx\n", __func__,
1823                 (unsigned long)fh, (unsigned long)dev,
1824                 (unsigned long)&dev->vidq[cur_channel]);
1825         dprintk(4, "%s: list_empty active=%d\n", __func__,
1826                 list_empty(&dev->vidq[cur_channel].active));
1827         videobuf_queue_vmalloc_init(&fh->vb_vidq, &s2255_video_qops,
1828                                     NULL, &dev->slock,
1829                                     fh->type,
1830                                     V4L2_FIELD_INTERLACED,
1831                                     sizeof(struct s2255_buffer), fh);
1832         return 0;
1833 }
1834
1835
1836 static unsigned int s2255_poll(struct file *file,
1837                                struct poll_table_struct *wait)
1838 {
1839         struct s2255_fh *fh = file->private_data;
1840         int rc;
1841         dprintk(100, "%s\n", __func__);
1842         if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
1843                 return POLLERR;
1844         rc = videobuf_poll_stream(file, &fh->vb_vidq, wait);
1845         return rc;
1846 }
1847
1848 static void s2255_destroy(struct s2255_dev *dev)
1849 {
1850         /* board shutdown stops the read pipe if it is running */
1851         s2255_board_shutdown(dev);
1852         /* make sure firmware still not trying to load */
1853         del_timer(&dev->timer);  /* only started in .probe and .open */
1854         if (dev->fw_data->fw_urb) {
1855                 usb_kill_urb(dev->fw_data->fw_urb);
1856                 usb_free_urb(dev->fw_data->fw_urb);
1857                 dev->fw_data->fw_urb = NULL;
1858         }
1859         if (dev->fw_data->fw)
1860                 release_firmware(dev->fw_data->fw);
1861         kfree(dev->fw_data->pfw_data);
1862         kfree(dev->fw_data);
1863         /* reset the DSP so firmware can be reloaded next time */
1864         s2255_reset_dsppower(dev);
1865         mutex_destroy(&dev->open_lock);
1866         mutex_destroy(&dev->lock);
1867         usb_put_dev(dev->udev);
1868         dprintk(1, "%s", __func__);
1869         kfree(dev);
1870 }
1871
1872 static int s2255_release(struct file *file)
1873 {
1874         struct s2255_fh *fh = file->private_data;
1875         struct s2255_dev *dev = fh->dev;
1876         struct video_device *vdev = video_devdata(file);
1877         if (!dev)
1878                 return -ENODEV;
1879         /* turn off stream */
1880         if (res_check(fh)) {
1881                 if (dev->b_acquire[fh->channel])
1882                         s2255_stop_acquire(dev, fh->channel);
1883                 videobuf_streamoff(&fh->vb_vidq);
1884                 res_free(dev, fh);
1885         }
1886         videobuf_mmap_free(&fh->vb_vidq);
1887         dprintk(1, "%s (dev=%s)\n", __func__, video_device_node_name(vdev));
1888         kfree(fh);
1889         return 0;
1890 }
1891
1892 static int s2255_mmap_v4l(struct file *file, struct vm_area_struct *vma)
1893 {
1894         struct s2255_fh *fh = file->private_data;
1895         int ret;
1896
1897         if (!fh)
1898                 return -ENODEV;
1899         dprintk(4, "%s, vma=0x%08lx\n", __func__, (unsigned long)vma);
1900         ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
1901         dprintk(4, "%s vma start=0x%08lx, size=%ld, ret=%d\n", __func__,
1902                 (unsigned long)vma->vm_start,
1903                 (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret);
1904         return ret;
1905 }
1906
1907 static const struct v4l2_file_operations s2255_fops_v4l = {
1908         .owner = THIS_MODULE,
1909         .open = s2255_open,
1910         .release = s2255_release,
1911         .poll = s2255_poll,
1912         .ioctl = video_ioctl2,  /* V4L2 ioctl handler */
1913         .mmap = s2255_mmap_v4l,
1914 };
1915
1916 static const struct v4l2_ioctl_ops s2255_ioctl_ops = {
1917         .vidioc_querymenu = vidioc_querymenu,
1918         .vidioc_querycap = vidioc_querycap,
1919         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1920         .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1921         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1922         .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1923         .vidioc_reqbufs = vidioc_reqbufs,
1924         .vidioc_querybuf = vidioc_querybuf,
1925         .vidioc_qbuf = vidioc_qbuf,
1926         .vidioc_dqbuf = vidioc_dqbuf,
1927         .vidioc_s_std = vidioc_s_std,
1928         .vidioc_enum_input = vidioc_enum_input,
1929         .vidioc_g_input = vidioc_g_input,
1930         .vidioc_s_input = vidioc_s_input,
1931         .vidioc_queryctrl = vidioc_queryctrl,
1932         .vidioc_g_ctrl = vidioc_g_ctrl,
1933         .vidioc_s_ctrl = vidioc_s_ctrl,
1934         .vidioc_streamon = vidioc_streamon,
1935         .vidioc_streamoff = vidioc_streamoff,
1936 #ifdef CONFIG_VIDEO_V4L1_COMPAT
1937         .vidiocgmbuf = vidioc_cgmbuf,
1938 #endif
1939         .vidioc_s_jpegcomp = vidioc_s_jpegcomp,
1940         .vidioc_g_jpegcomp = vidioc_g_jpegcomp,
1941         .vidioc_s_parm = vidioc_s_parm,
1942         .vidioc_g_parm = vidioc_g_parm,
1943         .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
1944 };
1945
1946 static void s2255_video_device_release(struct video_device *vdev)
1947 {
1948         struct s2255_dev *dev = video_get_drvdata(vdev);
1949         dprintk(4, "%s, chnls: %d \n", __func__, atomic_read(&dev->channels));
1950         if (atomic_dec_and_test(&dev->channels))
1951                 s2255_destroy(dev);
1952         return;
1953 }
1954
1955 static struct video_device template = {
1956         .name = "s2255v",
1957         .fops = &s2255_fops_v4l,
1958         .ioctl_ops = &s2255_ioctl_ops,
1959         .release = s2255_video_device_release,
1960         .tvnorms = S2255_NORMS,
1961         .current_norm = V4L2_STD_NTSC_M,
1962 };
1963
1964 static int s2255_probe_v4l(struct s2255_dev *dev)
1965 {
1966         int ret;
1967         int i;
1968         int cur_nr = video_nr;
1969         ret = v4l2_device_register(&dev->interface->dev, &dev->v4l2_dev);
1970         if (ret)
1971                 return ret;
1972         /* initialize all video 4 linux */
1973         /* register 4 video devices */
1974         for (i = 0; i < MAX_CHANNELS; i++) {
1975                 INIT_LIST_HEAD(&dev->vidq[i].active);
1976                 dev->vidq[i].dev = dev;
1977                 dev->vidq[i].channel = i;
1978                 /* register 4 video devices */
1979                 memcpy(&dev->vdev[i], &template, sizeof(struct video_device));
1980                 dev->vdev[i].v4l2_dev = &dev->v4l2_dev;
1981                 video_set_drvdata(&dev->vdev[i], dev);
1982                 if (video_nr == -1)
1983                         ret = video_register_device(&dev->vdev[i],
1984                                                     VFL_TYPE_GRABBER,
1985                                                     video_nr);
1986                 else
1987                         ret = video_register_device(&dev->vdev[i],
1988                                                     VFL_TYPE_GRABBER,
1989                                                     cur_nr + i);
1990                 if (ret) {
1991                         dev_err(&dev->udev->dev,
1992                                 "failed to register video device!\n");
1993                         break;
1994                 }
1995                 atomic_inc(&dev->channels);
1996                 v4l2_info(&dev->v4l2_dev, "V4L2 device registered as %s\n",
1997                           video_device_node_name(&dev->vdev[i]));
1998
1999         }
2000
2001         printk(KERN_INFO "Sensoray 2255 V4L driver Revision: %d.%d\n",
2002                S2255_MAJOR_VERSION,
2003                S2255_MINOR_VERSION);
2004         /* if no channels registered, return error and probe will fail*/
2005         if (atomic_read(&dev->channels) == 0) {
2006                 v4l2_device_unregister(&dev->v4l2_dev);
2007                 return ret;
2008         }
2009         if (atomic_read(&dev->channels) != MAX_CHANNELS)
2010                 printk(KERN_WARNING "s2255: Not all channels available.\n");
2011         return 0;
2012 }
2013
2014 /* this function moves the usb stream read pipe data
2015  * into the system buffers.
2016  * returns 0 on success, EAGAIN if more data to process( call this
2017  * function again).
2018  *
2019  * Received frame structure:
2020  * bytes 0-3:  marker : 0x2255DA4AL (S2255_MARKER_FRAME)
2021  * bytes 4-7:  channel: 0-3
2022  * bytes 8-11: payload size:  size of the frame
2023  * bytes 12-payloadsize+12:  frame data
2024  */
2025 static int save_frame(struct s2255_dev *dev, struct s2255_pipeinfo *pipe_info)
2026 {
2027         char *pdest;
2028         u32 offset = 0;
2029         int bframe = 0;
2030         char *psrc;
2031         unsigned long copy_size;
2032         unsigned long size;
2033         s32 idx = -1;
2034         struct s2255_framei *frm;
2035         unsigned char *pdata;
2036
2037         dprintk(100, "buffer to user\n");
2038
2039         idx = dev->cur_frame[dev->cc];
2040         frm = &dev->buffer[dev->cc].frame[idx];
2041
2042         if (frm->ulState == S2255_READ_IDLE) {
2043                 int jj;
2044                 unsigned int cc;
2045                 __le32 *pdword; /*data from dsp is little endian */
2046                 int payload;
2047                 /* search for marker codes */
2048                 pdata = (unsigned char *)pipe_info->transfer_buffer;
2049                 pdword = (__le32 *)pdata;
2050                 for (jj = 0; jj < (pipe_info->cur_transfer_size - 12); jj++) {
2051                         switch (*pdword) {
2052                         case S2255_MARKER_FRAME:
2053                                 dprintk(4, "found frame marker at offset:"
2054                                         " %d [%x %x]\n", jj, pdata[0],
2055                                         pdata[1]);
2056                                 offset = jj + PREFIX_SIZE;
2057                                 bframe = 1;
2058                                 cc = pdword[1];
2059                                 if (cc >= MAX_CHANNELS) {
2060                                         printk(KERN_ERR
2061                                                "bad channel\n");
2062                                         return -EINVAL;
2063                                 }
2064                                 /* reverse it */
2065                                 dev->cc = G_chnmap[cc];
2066                                 payload =  pdword[3];
2067                                 if (payload > dev->req_image_size[dev->cc]) {
2068                                         dev->bad_payload[dev->cc]++;
2069                                         /* discard the bad frame */
2070                                         return -EINVAL;
2071                                 }
2072                                 dev->pkt_size[dev->cc] = payload;
2073                                 dev->jpg_size[dev->cc] = pdword[4];
2074                                 break;
2075                         case S2255_MARKER_RESPONSE:
2076                                 pdata += DEF_USB_BLOCK;
2077                                 jj += DEF_USB_BLOCK;
2078                                 if (pdword[1] >= MAX_CHANNELS)
2079                                         break;
2080                                 cc = G_chnmap[pdword[1]];
2081                                 if (cc >= MAX_CHANNELS)
2082                                         break;
2083                                 switch (pdword[2]) {
2084                                 case S2255_RESPONSE_SETMODE:
2085                                         /* check if channel valid */
2086                                         /* set mode ready */
2087                                         dev->setmode_ready[cc] = 1;
2088                                         wake_up(&dev->wait_setmode[cc]);
2089                                         dprintk(5, "setmode ready %d\n", cc);
2090                                         break;
2091                                 case S2255_RESPONSE_FW:
2092                                         dev->chn_ready |= (1 << cc);
2093                                         if ((dev->chn_ready & 0x0f) != 0x0f)
2094                                                 break;
2095                                         /* all channels ready */
2096                                         printk(KERN_INFO "s2255: fw loaded\n");
2097                                         atomic_set(&dev->fw_data->fw_state,
2098                                                    S2255_FW_SUCCESS);
2099                                         wake_up(&dev->fw_data->wait_fw);
2100                                         break;
2101                                 case S2255_RESPONSE_STATUS:
2102                                         dev->vidstatus[cc] = pdword[3];
2103                                         dev->vidstatus_ready[cc] = 1;
2104                                         wake_up(&dev->wait_vidstatus[cc]);
2105                                         dprintk(5, "got vidstatus %x chan %d\n",
2106                                                 pdword[3], cc);
2107                                         break;
2108                                 default:
2109                                         printk(KERN_INFO "s2255 unknown resp\n");
2110                                 }
2111                         default:
2112                                 pdata++;
2113                                 break;
2114                         }
2115                         if (bframe)
2116                                 break;
2117                 } /* for */
2118                 if (!bframe)
2119                         return -EINVAL;
2120         }
2121
2122
2123         idx = dev->cur_frame[dev->cc];
2124         frm = &dev->buffer[dev->cc].frame[idx];
2125
2126         /* search done.  now find out if should be acquiring on this channel */
2127         if (!dev->b_acquire[dev->cc]) {
2128                 /* we found a frame, but this channel is turned off */
2129                 frm->ulState = S2255_READ_IDLE;
2130                 return -EINVAL;
2131         }
2132
2133         if (frm->ulState == S2255_READ_IDLE) {
2134                 frm->ulState = S2255_READ_FRAME;
2135                 frm->cur_size = 0;
2136         }
2137
2138         /* skip the marker 512 bytes (and offset if out of sync) */
2139         psrc = (u8 *)pipe_info->transfer_buffer + offset;
2140
2141
2142         if (frm->lpvbits == NULL) {
2143                 dprintk(1, "s2255 frame buffer == NULL.%p %p %d %d",
2144                         frm, dev, dev->cc, idx);
2145                 return -ENOMEM;
2146         }
2147
2148         pdest = frm->lpvbits + frm->cur_size;
2149
2150         copy_size = (pipe_info->cur_transfer_size - offset);
2151
2152         size = dev->pkt_size[dev->cc] - PREFIX_SIZE;
2153
2154         /* sanity check on pdest */
2155         if ((copy_size + frm->cur_size) < dev->req_image_size[dev->cc])
2156                 memcpy(pdest, psrc, copy_size);
2157
2158         frm->cur_size += copy_size;
2159         dprintk(4, "cur_size size %lu size %lu \n", frm->cur_size, size);
2160
2161         if (frm->cur_size >= size) {
2162
2163                 u32 cc = dev->cc;
2164                 dprintk(2, "****************[%d]Buffer[%d]full*************\n",
2165                         cc, idx);
2166                 dev->last_frame[cc] = dev->cur_frame[cc];
2167                 dev->cur_frame[cc]++;
2168                 /* end of system frame ring buffer, start at zero */
2169                 if ((dev->cur_frame[cc] == SYS_FRAMES) ||
2170                     (dev->cur_frame[cc] == dev->buffer[cc].dwFrames))
2171                         dev->cur_frame[cc] = 0;
2172                 /* frame ready */
2173                 if (dev->b_acquire[cc])
2174                         s2255_got_frame(dev, cc, dev->jpg_size[cc]);
2175                 dev->frame_count[cc]++;
2176                 frm->ulState = S2255_READ_IDLE;
2177                 frm->cur_size = 0;
2178
2179         }
2180         /* done successfully */
2181         return 0;
2182 }
2183
2184 static void s2255_read_video_callback(struct s2255_dev *dev,
2185                                       struct s2255_pipeinfo *pipe_info)
2186 {
2187         int res;
2188         dprintk(50, "callback read video \n");
2189
2190         if (dev->cc >= MAX_CHANNELS) {
2191                 dev->cc = 0;
2192                 dev_err(&dev->udev->dev, "invalid channel\n");
2193                 return;
2194         }
2195         /* otherwise copy to the system buffers */
2196         res = save_frame(dev, pipe_info);
2197         if (res != 0)
2198                 dprintk(4, "s2255: read callback failed\n");
2199
2200         dprintk(50, "callback read video done\n");
2201         return;
2202 }
2203
2204 static long s2255_vendor_req(struct s2255_dev *dev, unsigned char Request,
2205                              u16 Index, u16 Value, void *TransferBuffer,
2206                              s32 TransferBufferLength, int bOut)
2207 {
2208         int r;
2209         if (!bOut) {
2210                 r = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
2211                                     Request,
2212                                     USB_TYPE_VENDOR | USB_RECIP_DEVICE |
2213                                     USB_DIR_IN,
2214                                     Value, Index, TransferBuffer,
2215                                     TransferBufferLength, HZ * 5);
2216         } else {
2217                 r = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
2218                                     Request, USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2219                                     Value, Index, TransferBuffer,
2220                                     TransferBufferLength, HZ * 5);
2221         }
2222         return r;
2223 }
2224
2225 /*
2226  * retrieve FX2 firmware version. future use.
2227  * @param dev pointer to device extension
2228  * @return -1 for fail, else returns firmware version as an int(16 bits)
2229  */
2230 static int s2255_get_fx2fw(struct s2255_dev *dev)
2231 {
2232         int fw;
2233         int ret;
2234         unsigned char transBuffer[64];
2235         ret = s2255_vendor_req(dev, S2255_VR_FW, 0, 0, transBuffer, 2,
2236                                S2255_VR_IN);
2237         if (ret < 0)
2238                 dprintk(2, "get fw error: %x\n", ret);
2239         fw = transBuffer[0] + (transBuffer[1] << 8);
2240         dprintk(2, "Get FW %x %x\n", transBuffer[0], transBuffer[1]);
2241         return fw;
2242 }
2243
2244 /*
2245  * Create the system ring buffer to copy frames into from the
2246  * usb read pipe.
2247  */
2248 static int s2255_create_sys_buffers(struct s2255_dev *dev, unsigned long chn)
2249 {
2250         unsigned long i;
2251         unsigned long reqsize;
2252         dprintk(1, "create sys buffers\n");
2253         if (chn >= MAX_CHANNELS)
2254                 return -1;
2255
2256         dev->buffer[chn].dwFrames = SYS_FRAMES;
2257
2258         /* always allocate maximum size(PAL) for system buffers */
2259         reqsize = SYS_FRAMES_MAXSIZE;
2260
2261         if (reqsize > SYS_FRAMES_MAXSIZE)
2262                 reqsize = SYS_FRAMES_MAXSIZE;
2263
2264         for (i = 0; i < SYS_FRAMES; i++) {
2265                 /* allocate the frames */
2266                 dev->buffer[chn].frame[i].lpvbits = vmalloc(reqsize);
2267
2268                 dprintk(1, "valloc %p chan %lu, idx %lu, pdata %p\n",
2269                         &dev->buffer[chn].frame[i], chn, i,
2270                         dev->buffer[chn].frame[i].lpvbits);
2271                 dev->buffer[chn].frame[i].size = reqsize;
2272                 if (dev->buffer[chn].frame[i].lpvbits == NULL) {
2273                         printk(KERN_INFO "out of memory.  using less frames\n");
2274                         dev->buffer[chn].dwFrames = i;
2275                         break;
2276                 }
2277         }
2278
2279         /* make sure internal states are set */
2280         for (i = 0; i < SYS_FRAMES; i++) {
2281                 dev->buffer[chn].frame[i].ulState = 0;
2282                 dev->buffer[chn].frame[i].cur_size = 0;
2283         }
2284
2285         dev->cur_frame[chn] = 0;
2286         dev->last_frame[chn] = -1;
2287         return 0;
2288 }
2289
2290 static int s2255_release_sys_buffers(struct s2255_dev *dev,
2291                                      unsigned long channel)
2292 {
2293         unsigned long i;
2294         dprintk(1, "release sys buffers\n");
2295         for (i = 0; i < SYS_FRAMES; i++) {
2296                 if (dev->buffer[channel].frame[i].lpvbits) {
2297                         dprintk(1, "vfree %p\n",
2298                                 dev->buffer[channel].frame[i].lpvbits);
2299                         vfree(dev->buffer[channel].frame[i].lpvbits);
2300                 }
2301                 dev->buffer[channel].frame[i].lpvbits = NULL;
2302         }
2303         return 0;
2304 }
2305
2306 static int s2255_board_init(struct s2255_dev *dev)
2307 {
2308         struct s2255_mode mode_def = DEF_MODEI_NTSC_CONT;
2309         int fw_ver;
2310         int j;
2311         struct s2255_pipeinfo *pipe = &dev->pipe;
2312         dprintk(4, "board init: %p", dev);
2313         memset(pipe, 0, sizeof(*pipe));
2314         pipe->dev = dev;
2315         pipe->cur_transfer_size = S2255_USB_XFER_SIZE;
2316         pipe->max_transfer_size = S2255_USB_XFER_SIZE;
2317
2318         pipe->transfer_buffer = kzalloc(pipe->max_transfer_size,
2319                                         GFP_KERNEL);
2320         if (pipe->transfer_buffer == NULL) {
2321                 dprintk(1, "out of memory!\n");
2322                 return -ENOMEM;
2323         }
2324         /* query the firmware */
2325         fw_ver = s2255_get_fx2fw(dev);
2326
2327         printk(KERN_INFO "2255 usb firmware version %d.%d\n",
2328                (fw_ver >> 8) & 0xff,
2329                fw_ver & 0xff);
2330
2331         if (fw_ver < S2255_CUR_USB_FWVER)
2332                 dev_err(&dev->udev->dev,
2333                         "usb firmware not up to date %d.%d\n",
2334                         (fw_ver >> 8) & 0xff,
2335                         fw_ver & 0xff);
2336
2337         for (j = 0; j < MAX_CHANNELS; j++) {
2338                 dev->b_acquire[j] = 0;
2339                 dev->mode[j] = mode_def;
2340                 if (dev->pid == 0x2257 && j > 1)
2341                         dev->mode[j].color |= (1 << 16);
2342                 dev->jc[j].quality = S2255_DEF_JPEG_QUAL;
2343                 dev->cur_fmt[j] = &formats[0];
2344                 dev->mode[j].restart = 1;
2345                 dev->req_image_size[j] = get_transfer_size(&mode_def);
2346                 dev->frame_count[j] = 0;
2347                 /* create the system buffers */
2348                 s2255_create_sys_buffers(dev, j);
2349         }
2350         /* start read pipe */
2351         s2255_start_readpipe(dev);
2352         dprintk(1, "%s: success\n", __func__);
2353         return 0;
2354 }
2355
2356 static int s2255_board_shutdown(struct s2255_dev *dev)
2357 {
2358         u32 i;
2359         dprintk(1, "%s: dev: %p", __func__,  dev);
2360
2361         for (i = 0; i < MAX_CHANNELS; i++) {
2362                 if (dev->b_acquire[i])
2363                         s2255_stop_acquire(dev, i);
2364         }
2365
2366         s2255_stop_readpipe(dev);
2367
2368         for (i = 0; i < MAX_CHANNELS; i++)
2369                 s2255_release_sys_buffers(dev, i);
2370         /* release transfer buffer */
2371         kfree(dev->pipe.transfer_buffer);
2372         return 0;
2373 }
2374
2375 static void read_pipe_completion(struct urb *purb)
2376 {
2377         struct s2255_pipeinfo *pipe_info;
2378         struct s2255_dev *dev;
2379         int status;
2380         int pipe;
2381         pipe_info = purb->context;
2382         dprintk(100, "%s: urb:%p, status %d\n", __func__, purb,
2383                 purb->status);
2384         if (pipe_info == NULL) {
2385                 dev_err(&purb->dev->dev, "no context!\n");
2386                 return;
2387         }
2388
2389         dev = pipe_info->dev;
2390         if (dev == NULL) {
2391                 dev_err(&purb->dev->dev, "no context!\n");
2392                 return;
2393         }
2394         status = purb->status;
2395         /* if shutting down, do not resubmit, exit immediately */
2396         if (status == -ESHUTDOWN) {
2397                 dprintk(2, "%s: err shutdown\n", __func__);
2398                 pipe_info->err_count++;
2399                 return;
2400         }
2401
2402         if (pipe_info->state == 0) {
2403                 dprintk(2, "%s: exiting USB pipe", __func__);
2404                 return;
2405         }
2406
2407         if (status == 0)
2408                 s2255_read_video_callback(dev, pipe_info);
2409         else {
2410                 pipe_info->err_count++;
2411                 dprintk(1, "%s: failed URB %d\n", __func__, status);
2412         }
2413
2414         pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
2415         /* reuse urb */
2416         usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
2417                           pipe,
2418                           pipe_info->transfer_buffer,
2419                           pipe_info->cur_transfer_size,
2420                           read_pipe_completion, pipe_info);
2421
2422         if (pipe_info->state != 0) {
2423                 if (usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL)) {
2424                         dev_err(&dev->udev->dev, "error submitting urb\n");
2425                 }
2426         } else {
2427                 dprintk(2, "%s :complete state 0\n", __func__);
2428         }
2429         return;
2430 }
2431
2432 static int s2255_start_readpipe(struct s2255_dev *dev)
2433 {
2434         int pipe;
2435         int retval;
2436         struct s2255_pipeinfo *pipe_info = &dev->pipe;
2437         pipe = usb_rcvbulkpipe(dev->udev, dev->read_endpoint);
2438         dprintk(2, "%s: IN %d\n", __func__, dev->read_endpoint);
2439         pipe_info->state = 1;
2440         pipe_info->err_count = 0;
2441         pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL);
2442         if (!pipe_info->stream_urb) {
2443                 dev_err(&dev->udev->dev,
2444                         "ReadStream: Unable to alloc URB\n");
2445                 return -ENOMEM;
2446         }
2447         /* transfer buffer allocated in board_init */
2448         usb_fill_bulk_urb(pipe_info->stream_urb, dev->udev,
2449                           pipe,
2450                           pipe_info->transfer_buffer,
2451                           pipe_info->cur_transfer_size,
2452                           read_pipe_completion, pipe_info);
2453         retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL);
2454         if (retval) {
2455                 printk(KERN_ERR "s2255: start read pipe failed\n");
2456                 return retval;
2457         }
2458         return 0;
2459 }
2460
2461 /* starts acquisition process */
2462 static int s2255_start_acquire(struct s2255_dev *dev, unsigned long chn)
2463 {
2464         unsigned char *buffer;
2465         int res;
2466         unsigned long chn_rev;
2467         int j;
2468         if (chn >= MAX_CHANNELS) {
2469                 dprintk(2, "start acquire failed, bad channel %lu\n", chn);
2470                 return -1;
2471         }
2472         chn_rev = G_chnmap[chn];
2473         buffer = kzalloc(512, GFP_KERNEL);
2474         if (buffer == NULL) {
2475                 dev_err(&dev->udev->dev, "out of mem\n");
2476                 return -ENOMEM;
2477         }
2478
2479         dev->last_frame[chn] = -1;
2480         dev->bad_payload[chn] = 0;
2481         dev->cur_frame[chn] = 0;
2482         for (j = 0; j < SYS_FRAMES; j++) {
2483                 dev->buffer[chn].frame[j].ulState = 0;
2484                 dev->buffer[chn].frame[j].cur_size = 0;
2485         }
2486
2487         /* send the start command */
2488         *(__le32 *) buffer = IN_DATA_TOKEN;
2489         *((__le32 *) buffer + 1) = (__le32) cpu_to_le32(chn_rev);
2490         *((__le32 *) buffer + 2) = CMD_START;
2491         res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
2492         if (res != 0)
2493                 dev_err(&dev->udev->dev, "CMD_START error\n");
2494
2495         dprintk(2, "start acquire exit[%lu] %d \n", chn, res);
2496         kfree(buffer);
2497         return 0;
2498 }
2499
2500 static int s2255_stop_acquire(struct s2255_dev *dev, unsigned long chn)
2501 {
2502         unsigned char *buffer;
2503         int res;
2504         unsigned long chn_rev;
2505         if (chn >= MAX_CHANNELS) {
2506                 dprintk(2, "stop acquire failed, bad channel %lu\n", chn);
2507                 return -1;
2508         }
2509         chn_rev = G_chnmap[chn];
2510         buffer = kzalloc(512, GFP_KERNEL);
2511         if (buffer == NULL) {
2512                 dev_err(&dev->udev->dev, "out of mem\n");
2513                 return -ENOMEM;
2514         }
2515         /* send the stop command */
2516         *(__le32 *) buffer = IN_DATA_TOKEN;
2517         *((__le32 *) buffer + 1) = (__le32) cpu_to_le32(chn_rev);
2518         *((__le32 *) buffer + 2) = CMD_STOP;
2519         res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
2520         if (res != 0)
2521                 dev_err(&dev->udev->dev, "CMD_STOP error\n");
2522         kfree(buffer);
2523         dev->b_acquire[chn] = 0;
2524         dprintk(4, "%s: chn %lu, res %d\n", __func__, chn, res);
2525         return res;
2526 }
2527
2528 static void s2255_stop_readpipe(struct s2255_dev *dev)
2529 {
2530         struct s2255_pipeinfo *pipe = &dev->pipe;
2531
2532         pipe->state = 0;
2533         if (pipe->stream_urb) {
2534                 /* cancel urb */
2535                 usb_kill_urb(pipe->stream_urb);
2536                 usb_free_urb(pipe->stream_urb);
2537                 pipe->stream_urb = NULL;
2538         }
2539         dprintk(4, "%s", __func__);
2540         return;
2541 }
2542
2543 static void s2255_fwload_start(struct s2255_dev *dev, int reset)
2544 {
2545         if (reset)
2546                 s2255_reset_dsppower(dev);
2547         dev->fw_data->fw_size = dev->fw_data->fw->size;
2548         atomic_set(&dev->fw_data->fw_state, S2255_FW_NOTLOADED);
2549         memcpy(dev->fw_data->pfw_data,
2550                dev->fw_data->fw->data, CHUNK_SIZE);
2551         dev->fw_data->fw_loaded = CHUNK_SIZE;
2552         usb_fill_bulk_urb(dev->fw_data->fw_urb, dev->udev,
2553                           usb_sndbulkpipe(dev->udev, 2),
2554                           dev->fw_data->pfw_data,
2555                           CHUNK_SIZE, s2255_fwchunk_complete,
2556                           dev->fw_data);
2557         mod_timer(&dev->timer, jiffies + HZ);
2558 }
2559
2560 /* standard usb probe function */
2561 static int s2255_probe(struct usb_interface *interface,
2562                        const struct usb_device_id *id)
2563 {
2564         struct s2255_dev *dev = NULL;
2565         struct usb_host_interface *iface_desc;
2566         struct usb_endpoint_descriptor *endpoint;
2567         int i;
2568         int retval = -ENOMEM;
2569         __le32 *pdata;
2570         int fw_size;
2571         dprintk(2, "%s\n", __func__);
2572         /* allocate memory for our device state and initialize it to zero */
2573         dev = kzalloc(sizeof(struct s2255_dev), GFP_KERNEL);
2574         if (dev == NULL) {
2575                 s2255_dev_err(&interface->dev, "out of memory\n");
2576                 return -ENOMEM;
2577         }
2578         atomic_set(&dev->channels, 0);
2579         dev->pid = id->idProduct;
2580         dev->fw_data = kzalloc(sizeof(struct s2255_fw), GFP_KERNEL);
2581         if (!dev->fw_data)
2582                 goto errorFWDATA1;
2583         mutex_init(&dev->lock);
2584         mutex_init(&dev->open_lock);
2585         /* grab usb_device and save it */
2586         dev->udev = usb_get_dev(interface_to_usbdev(interface));
2587         if (dev->udev == NULL) {
2588                 dev_err(&interface->dev, "null usb device\n");
2589                 retval = -ENODEV;
2590                 goto errorUDEV;
2591         }
2592         dprintk(1, "dev: %p, udev %p interface %p\n", dev,
2593                 dev->udev, interface);
2594         dev->interface = interface;
2595         /* set up the endpoint information  */
2596         iface_desc = interface->cur_altsetting;
2597         dprintk(1, "num endpoints %d\n", iface_desc->desc.bNumEndpoints);
2598         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
2599                 endpoint = &iface_desc->endpoint[i].desc;
2600                 if (!dev->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) {
2601                         /* we found the bulk in endpoint */
2602                         dev->read_endpoint = endpoint->bEndpointAddress;
2603                 }
2604         }
2605
2606         if (!dev->read_endpoint) {
2607                 dev_err(&interface->dev, "Could not find bulk-in endpoint\n");
2608                 goto errorEP;
2609         }
2610         init_timer(&dev->timer);
2611         dev->timer.function = s2255_timer;
2612         dev->timer.data = (unsigned long)dev->fw_data;
2613         init_waitqueue_head(&dev->fw_data->wait_fw);
2614         for (i = 0; i < MAX_CHANNELS; i++) {
2615                 init_waitqueue_head(&dev->wait_setmode[i]);
2616                 init_waitqueue_head(&dev->wait_vidstatus[i]);
2617         }
2618
2619         dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL);
2620         if (!dev->fw_data->fw_urb) {
2621                 dev_err(&interface->dev, "out of memory!\n");
2622                 goto errorFWURB;
2623         }
2624
2625         dev->fw_data->pfw_data = kzalloc(CHUNK_SIZE, GFP_KERNEL);
2626         if (!dev->fw_data->pfw_data) {
2627                 dev_err(&interface->dev, "out of memory!\n");
2628                 goto errorFWDATA2;
2629         }
2630         /* load the first chunk */
2631         if (request_firmware(&dev->fw_data->fw,
2632                              FIRMWARE_FILE_NAME, &dev->udev->dev)) {
2633                 printk(KERN_ERR "sensoray 2255 failed to get firmware\n");
2634                 goto errorREQFW;
2635         }
2636         /* check the firmware is valid */
2637         fw_size = dev->fw_data->fw->size;
2638         pdata = (__le32 *) &dev->fw_data->fw->data[fw_size - 8];
2639
2640         if (*pdata != S2255_FW_MARKER) {
2641                 printk(KERN_INFO "Firmware invalid.\n");
2642                 retval = -ENODEV;
2643                 goto errorFWMARKER;
2644         } else {
2645                 /* make sure firmware is the latest */
2646                 __le32 *pRel;
2647                 pRel = (__le32 *) &dev->fw_data->fw->data[fw_size - 4];
2648                 printk(KERN_INFO "s2255 dsp fw version %x\n", *pRel);
2649                 dev->dsp_fw_ver = *pRel;
2650                 if (*pRel < S2255_CUR_DSP_FWVER)
2651                         printk(KERN_INFO "s2255: f2255usb.bin out of date.\n");
2652                 if (dev->pid == 0x2257 && *pRel < S2255_MIN_DSP_COLORFILTER)
2653                         printk(KERN_WARNING "s2255: 2257 requires firmware %d"
2654                                "or above.\n", S2255_MIN_DSP_COLORFILTER);
2655         }
2656         usb_reset_device(dev->udev);
2657         /* load 2255 board specific */
2658         retval = s2255_board_init(dev);
2659         if (retval)
2660                 goto errorBOARDINIT;
2661         spin_lock_init(&dev->slock);
2662         s2255_fwload_start(dev, 0);
2663         /* loads v4l specific */
2664         retval = s2255_probe_v4l(dev);
2665         if (retval)
2666                 goto errorBOARDINIT;
2667         dev_info(&interface->dev, "Sensoray 2255 detected\n");
2668         return 0;
2669 errorBOARDINIT:
2670         s2255_board_shutdown(dev);
2671 errorFWMARKER:
2672         release_firmware(dev->fw_data->fw);
2673 errorREQFW:
2674         kfree(dev->fw_data->pfw_data);
2675 errorFWDATA2:
2676         usb_free_urb(dev->fw_data->fw_urb);
2677 errorFWURB:
2678         del_timer(&dev->timer);
2679 errorEP:
2680         usb_put_dev(dev->udev);
2681 errorUDEV:
2682         kfree(dev->fw_data);
2683         mutex_destroy(&dev->open_lock);
2684         mutex_destroy(&dev->lock);
2685 errorFWDATA1:
2686         kfree(dev);
2687         printk(KERN_WARNING "Sensoray 2255 driver load failed: 0x%x\n", retval);
2688         return retval;
2689 }
2690
2691 /* disconnect routine. when board is removed physically or with rmmod */
2692 static void s2255_disconnect(struct usb_interface *interface)
2693 {
2694         struct s2255_dev *dev = to_s2255_dev(usb_get_intfdata(interface));
2695         int i;
2696         int channels = atomic_read(&dev->channels);
2697         v4l2_device_unregister(&dev->v4l2_dev);
2698         /*see comments in the uvc_driver.c usb disconnect function */
2699         atomic_inc(&dev->channels);
2700         /* unregister each video device. */
2701         for (i = 0; i < channels; i++) {
2702                 if (video_is_registered(&dev->vdev[i]))
2703                         video_unregister_device(&dev->vdev[i]);
2704         }
2705         /* wake up any of our timers */
2706         atomic_set(&dev->fw_data->fw_state, S2255_FW_DISCONNECTING);
2707         wake_up(&dev->fw_data->wait_fw);
2708         for (i = 0; i < MAX_CHANNELS; i++) {
2709                 dev->setmode_ready[i] = 1;
2710                 wake_up(&dev->wait_setmode[i]);
2711                 dev->vidstatus_ready[i] = 1;
2712                 wake_up(&dev->wait_vidstatus[i]);
2713         }
2714         if (atomic_dec_and_test(&dev->channels))
2715                 s2255_destroy(dev);
2716         dev_info(&interface->dev, "%s\n", __func__);
2717 }
2718
2719 static struct usb_driver s2255_driver = {
2720         .name = S2255_DRIVER_NAME,
2721         .probe = s2255_probe,
2722         .disconnect = s2255_disconnect,
2723         .id_table = s2255_table,
2724 };
2725
2726 static int __init usb_s2255_init(void)
2727 {
2728         int result;
2729         /* register this driver with the USB subsystem */
2730         result = usb_register(&s2255_driver);
2731         if (result)
2732                 pr_err(KBUILD_MODNAME
2733                        ": usb_register failed. Error number %d\n", result);
2734         dprintk(2, "%s\n", __func__);
2735         return result;
2736 }
2737
2738 static void __exit usb_s2255_exit(void)
2739 {
2740         usb_deregister(&s2255_driver);
2741 }
2742
2743 module_init(usb_s2255_init);
2744 module_exit(usb_s2255_exit);
2745
2746 MODULE_DESCRIPTION("Sensoray 2255 Video for Linux driver");
2747 MODULE_AUTHOR("Dean Anderson (Sensoray Company Inc.)");
2748 MODULE_LICENSE("GPL");