drivers/staging/go7007/s2250-board.c

   1 /*
   2  * Copyright (C) 2008 Sensoray Company Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License (Version 2) as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software Foundation,
  15  * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/init.h>
  20 #include <linux/usb.h>
  21 #include <linux/i2c.h>
  22 #include <linux/videodev2.h>
  23 #include <media/v4l2-common.h>
  24 #include "s2250-loader.h"
  25 #include "go7007-priv.h"
  26 #include "wis-i2c.h"
  27
  28 #define TLV320_ADDRESS      0x34
  29 #define VPX322_ADDR_ANALOGCONTROL1      0x02
  30 #define VPX322_ADDR_BRIGHTNESS0         0x0127
  31 #define VPX322_ADDR_BRIGHTNESS1         0x0131
  32 #define VPX322_ADDR_CONTRAST0           0x0128
  33 #define VPX322_ADDR_CONTRAST1           0x0132
  34 #define VPX322_ADDR_HUE                 0x00dc
  35 #define VPX322_ADDR_SAT                 0x0030
  36
  37 struct go7007_usb_board {
  38         unsigned int flags;
  39         struct go7007_board_info main_info;
  40 };
  41
  42 struct go7007_usb {
  43         struct go7007_usb_board *board;
  44         struct mutex i2c_lock;
  45         struct usb_device *usbdev;
  46         struct urb *video_urbs[8];
  47         struct urb *audio_urbs[8];
  48         struct urb *intr_urb;
  49 };
  50
  51 static unsigned char aud_regs[] = {
  52         0x1e, 0x00,
  53         0x00, 0x17,
  54         0x02, 0x17,
  55         0x04, 0xf9,
  56         0x06, 0xf9,
  57         0x08, 0x02,
  58         0x0a, 0x00,
  59         0x0c, 0x00,
  60         0x0a, 0x00,
  61         0x0c, 0x00,
  62         0x0e, 0x02,
  63         0x10, 0x00,
  64         0x12, 0x01,
  65         0x00, 0x00,
  66 };
  67
  68
  69 static unsigned char vid_regs[] = {
  70         0xF2, 0x0f,
  71         0xAA, 0x00,
  72         0xF8, 0xff,
  73         0x00, 0x00,
  74 };
  75
  76 static u16 vid_regs_fp[] = {
  77         0x028, 0x067,
  78         0x120, 0x016,
  79         0x121, 0xcF2,
  80         0x122, 0x0F2,
  81         0x123, 0x00c,
  82         0x124, 0x2d0,
  83         0x125, 0x2e0,
  84         0x126, 0x004,
  85         0x128, 0x1E0,
  86         0x12A, 0x016,
  87         0x12B, 0x0F2,
  88         0x12C, 0x0F2,
  89         0x12D, 0x00c,
  90         0x12E, 0x2d0,
  91         0x12F, 0x2e0,
  92         0x130, 0x004,
  93         0x132, 0x1E0,
  94         0x140, 0x060,
  95         0x153, 0x00C,
  96         0x154, 0x200,
  97         0x150, 0x801,
  98         0x000, 0x000
  99 };
 100
 101 /* PAL specific values */
 102 static u16 vid_regs_fp_pal[] =
 103 {
 104         0x120, 0x017,
 105         0x121, 0xd22,
 106         0x122, 0x122,
 107         0x12A, 0x017,
 108         0x12B, 0x122,
 109         0x12C, 0x122,
 110         0x140, 0x060,
 111         0x000, 0x000,
 112 };
 113
 114 struct s2250 {
 115         v4l2_std_id std;
 116         int input;
 117         int brightness;
 118         int contrast;
 119         int saturation;
 120         int hue;
 121         int reg12b_val;
 122         int audio_input;
 123         struct i2c_client *audio;
 124 };
 125
 126 /* from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
 127 static int go7007_usb_vendor_request(struct go7007 *go, u16 request,
 128         u16 value, u16 index, void *transfer_buffer, int length, int in)
 129 {
 130         struct go7007_usb *usb = go->hpi_context;
 131         int timeout = 5000;
 132
 133         if (in) {
 134                 return usb_control_msg(usb->usbdev,
 135                                 usb_rcvctrlpipe(usb->usbdev, 0), request,
 136                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 137                                 value, index, transfer_buffer, length, timeout);
 138         } else {
 139                 return usb_control_msg(usb->usbdev,
 140                                 usb_sndctrlpipe(usb->usbdev, 0), request,
 141                                 USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 142                                 value, index, transfer_buffer, length, timeout);
 143         }
 144 }
 145 /* end from go7007-usb.c which is Copyright (C) 2005-2006 Micronas USA Inc.*/
 146
 147 static int write_reg(struct i2c_client *client, u8 reg, u8 value)
 148 {
 149         struct go7007 *go = i2c_get_adapdata(client->adapter);
 150         struct go7007_usb *usb;
 151         int rc;
 152         int dev_addr = client->addr;
 153         u8 *buf;
 154
 155         if (go == NULL)
 156                 return -ENODEV;
 157
 158         if (go->status == STATUS_SHUTDOWN)
 159                 return -EBUSY;
 160
 161         buf = kzalloc(16, GFP_KERNEL);
 162         if (buf == NULL)
 163                 return -ENOMEM;
 164
 165         usb = go->hpi_context;
 166         if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
 167                 printk(KERN_INFO "i2c lock failed\n");
 168                 kfree(buf);
 169                 return -EINTR;
 170         }
 171         rc = go7007_usb_vendor_request(go, 0x55, dev_addr,
 172                                        (reg<<8 | value),
 173                                        buf,
 174                                        16, 1);
 175
 176         mutex_unlock(&usb->i2c_lock);
 177         kfree(buf);
 178         return rc;
 179 }
 180
 181 static int write_reg_fp(struct i2c_client *client, u16 addr, u16 val)
 182 {
 183         struct go7007 *go = i2c_get_adapdata(client->adapter);
 184         struct go7007_usb *usb;
 185         u8 *buf;
 186         struct s2250 *dec = i2c_get_clientdata(client);
 187
 188         if (go == NULL)
 189                 return -ENODEV;
 190
 191         if (go->status == STATUS_SHUTDOWN)
 192                 return -EBUSY;
 193
 194         buf = kzalloc(16, GFP_KERNEL);
 195
 196         if (buf == NULL)
 197                 return -ENOMEM;
 198
 199
 200
 201         memset(buf, 0xcd, 6);
 202
 203         usb = go->hpi_context;
 204         if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
 205                 printk(KERN_INFO "i2c lock failed\n");
 206                 kfree(buf);
 207                 return -EINTR;
 208         }
 209         if (go7007_usb_vendor_request(go, 0x57, addr, val, buf, 16, 1) < 0) {
 210                 kfree(buf);
 211                 return -EFAULT;
 212         }
 213
 214         mutex_unlock(&usb->i2c_lock);
 215         if (buf[0] == 0) {
 216                 unsigned int subaddr, val_read;
 217
 218                 subaddr = (buf[4] << 8) + buf[5];
 219                 val_read = (buf[2] << 8) + buf[3];
 220                 kfree(buf);
 221                 if (val_read != val) {
 222                         printk(KERN_INFO "invalid fp write %x %x\n",
 223                                val_read, val);
 224                         return -EFAULT;
 225                 }
 226                 if (subaddr != addr) {
 227                         printk(KERN_INFO "invalid fp write addr %x %x\n",
 228                                subaddr, addr);
 229                         return -EFAULT;
 230                 }
 231         } else {
 232                 kfree(buf);
 233                 return -EFAULT;
 234         }
 235
 236         /* save last 12b value */
 237         if (addr == 0x12b)
 238                 dec->reg12b_val = val;
 239
 240         return 0;
 241 }
 242
 243 static int read_reg_fp(struct i2c_client *client, u16 addr, u16 *val)
 244 {
 245         struct go7007 *go = i2c_get_adapdata(client->adapter);
 246         struct go7007_usb *usb;
 247         u8 *buf;
 248
 249         if (go == NULL)
 250                 return -ENODEV;
 251
 252         if (go->status == STATUS_SHUTDOWN)
 253                 return -EBUSY;
 254
 255         buf = kzalloc(16, GFP_KERNEL);
 256
 257         if (buf == NULL)
 258                 return -ENOMEM;
 259
 260
 261
 262         memset(buf, 0xcd, 6);
 263         usb = go->hpi_context;
 264         if (mutex_lock_interruptible(&usb->i2c_lock) != 0) {
 265                 printk(KERN_INFO "i2c lock failed\n");
 266                 kfree(buf);
 267                 return -EINTR;
 268         }
 269         if (go7007_usb_vendor_request(go, 0x58, addr, 0, buf, 16, 1) < 0) {
 270                 kfree(buf);
 271                 return -EFAULT;
 272         }
 273         mutex_unlock(&usb->i2c_lock);
 274
 275         *val = (buf[0] << 8) | buf[1];
 276         kfree(buf);
 277
 278         return 0;
 279 }
 280
 281
 282 static int write_regs(struct i2c_client *client, u8 *regs)
 283 {
 284         int i;
 285
 286         for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
 287                 if (write_reg(client, regs[i], regs[i+1]) < 0) {
 288                         printk(KERN_INFO "s2250: failed\n");
 289                         return -1;
 290                 }
 291         }
 292         return 0;
 293 }
 294
 295 static int write_regs_fp(struct i2c_client *client, u16 *regs)
 296 {
 297         int i;
 298
 299         for (i = 0; !((regs[i] == 0x00) && (regs[i+1] == 0x00)); i += 2) {
 300                 if (write_reg_fp(client, regs[i], regs[i+1]) < 0) {
 301                         printk(KERN_INFO "s2250: failed fp\n");
 302                         return -1;
 303                 }
 304         }
 305         return 0;
 306 }
 307
 308
 309 static int s2250_command(struct i2c_client *client,
 310                          unsigned int cmd, void *arg)
 311 {
 312         struct s2250 *dec = i2c_get_clientdata(client);
 313
 314         switch (cmd) {
 315         case VIDIOC_S_INPUT:
 316         {
 317                 int vidsys;
 318                 int *input = arg;
 319
 320                 vidsys = (dec->std == V4L2_STD_NTSC) ? 0x01 : 0x00;
 321                 if (*input == 0) {
 322                         /* composite */
 323                         write_reg_fp(client, 0x20, 0x020 | vidsys);
 324                         write_reg_fp(client, 0x21, 0x662);
 325                         write_reg_fp(client, 0x140, 0x060);
 326                 } else {
 327                         /* S-Video */
 328                         write_reg_fp(client, 0x20, 0x040 | vidsys);
 329                         write_reg_fp(client, 0x21, 0x666);
 330                         write_reg_fp(client, 0x140, 0x060);
 331                 }
 332                 dec->input = *input;
 333                 break;
 334         }
 335         case VIDIOC_S_STD:
 336         {
 337                 v4l2_std_id *std = arg;
 338                 u16 vidsource;
 339
 340                 vidsource = (dec->input == 1) ? 0x040 : 0x020;
 341                 dec->std = *std;
 342                 switch (dec->std) {
 343                 case V4L2_STD_NTSC:
 344                         write_regs_fp(client, vid_regs_fp);
 345                         write_reg_fp(client, 0x20, vidsource | 1);
 346                         break;
 347                 case V4L2_STD_PAL:
 348                         write_regs_fp(client, vid_regs_fp);
 349                         write_regs_fp(client, vid_regs_fp_pal);
 350                         write_reg_fp(client, 0x20, vidsource);
 351                         break;
 352                 default:
 353                         return -EINVAL;
 354                 }
 355                 break;
 356         }
 357         case VIDIOC_QUERYCTRL:
 358         {
 359                 struct v4l2_queryctrl *ctrl = arg;
 360                 static const u32 user_ctrls[] = {
 361                         V4L2_CID_BRIGHTNESS,
 362                         V4L2_CID_CONTRAST,
 363                         V4L2_CID_SATURATION,
 364                         V4L2_CID_HUE,
 365                         0
 366                 };
 367                 static const u32 *ctrl_classes[] = {
 368                         user_ctrls,
 369                         NULL
 370                 };
 371
 372                 ctrl->id = v4l2_ctrl_next(ctrl_classes, ctrl->id);
 373                 switch (ctrl->id) {
 374                 case V4L2_CID_BRIGHTNESS:
 375                         v4l2_ctrl_query_fill(ctrl, 0, 100, 1, 50);
 376                         break;
 377                 case V4L2_CID_CONTRAST:
 378                         v4l2_ctrl_query_fill(ctrl, 0, 100, 1, 50);
 379                         break;
 380                 case V4L2_CID_SATURATION:
 381                         v4l2_ctrl_query_fill(ctrl, 0, 100, 1, 50);
 382                         break;
 383                 case V4L2_CID_HUE:
 384                         v4l2_ctrl_query_fill(ctrl, -50, 50, 1, 0);
 385                         break;
 386                 default:
 387                         ctrl->name[0] = '\0';
 388                         return -EINVAL;
 389                 }
 390                 break;
 391         }
 392         case VIDIOC_S_CTRL:
 393         {
 394                 struct v4l2_control *ctrl = arg;
 395                 int value1;
 396                 u16 oldvalue;
 397
 398                 switch (ctrl->id) {
 399                 case V4L2_CID_BRIGHTNESS:
 400                         if (ctrl->value > 100)
 401                                 dec->brightness = 100;
 402                         else if (ctrl->value < 0)
 403                                 dec->brightness = 0;
 404                         else
 405                                 dec->brightness = ctrl->value;
 406                         value1 = (dec->brightness - 50) * 255 / 100;
 407                         read_reg_fp(client, VPX322_ADDR_BRIGHTNESS0, &oldvalue);
 408                         write_reg_fp(client, VPX322_ADDR_BRIGHTNESS0,
 409                                      value1 | (oldvalue & ~0xff));
 410                         read_reg_fp(client, VPX322_ADDR_BRIGHTNESS1, &oldvalue);
 411                         write_reg_fp(client, VPX322_ADDR_BRIGHTNESS1,
 412                                      value1 | (oldvalue & ~0xff));
 413                         write_reg_fp(client, 0x140, 0x60);
 414                         break;
 415                 case V4L2_CID_CONTRAST:
 416                         if (ctrl->value > 100)
 417                                 dec->contrast = 100;
 418                         else if (ctrl->value < 0)
 419                                 dec->contrast = 0;
 420                         else
 421                                 dec->contrast = ctrl->value;
 422                         value1 = dec->contrast * 0x40 / 100;
 423                         if (value1 > 0x3f)
 424                                 value1 = 0x3f; /* max */
 425                         read_reg_fp(client, VPX322_ADDR_CONTRAST0, &oldvalue);
 426                         write_reg_fp(client, VPX322_ADDR_CONTRAST0,
 427                                      value1 | (oldvalue & ~0x3f));
 428                         read_reg_fp(client, VPX322_ADDR_CONTRAST1, &oldvalue);
 429                         write_reg_fp(client, VPX322_ADDR_CONTRAST1,
 430                                      value1 | (oldvalue & ~0x3f));
 431                         write_reg_fp(client, 0x140, 0x60);
 432                         break;
 433                 case V4L2_CID_SATURATION:
 434                         if (ctrl->value > 127)
 435                                 dec->saturation = 127;
 436                         else if (ctrl->value < 0)
 437                                 dec->saturation = 0;
 438                         else
 439                                 dec->saturation = ctrl->value;
 440
 441                         value1 = dec->saturation * 4140 / 100;
 442                         if (value1 > 4094)
 443                                 value1 = 4094;
 444                         write_reg_fp(client, VPX322_ADDR_SAT, value1);
 445                         break;
 446                 case V4L2_CID_HUE:
 447                         if (ctrl->value > 50)
 448                                 dec->hue = 50;
 449                         else if (ctrl->value < -50)
 450                                 dec->hue = -50;
 451                         else
 452                                 dec->hue = ctrl->value;
 453                         /* clamp the hue range */
 454                         value1 = dec->hue * 280 / 50;
 455                         write_reg_fp(client, VPX322_ADDR_HUE, value1);
 456                         break;
 457                 }
 458                 break;
 459         }
 460         case VIDIOC_G_CTRL:
 461         {
 462                 struct v4l2_control *ctrl = arg;
 463
 464                 switch (ctrl->id) {
 465                 case V4L2_CID_BRIGHTNESS:
 466                         ctrl->value = dec->brightness;
 467                         break;
 468                 case V4L2_CID_CONTRAST:
 469                         ctrl->value = dec->contrast;
 470                         break;
 471                 case V4L2_CID_SATURATION:
 472                         ctrl->value = dec->saturation;
 473                         break;
 474                 case V4L2_CID_HUE:
 475                         ctrl->value = dec->hue;
 476                         break;
 477                 }
 478                 break;
 479         }
 480         case VIDIOC_S_FMT:
 481         {
 482                 struct v4l2_format *fmt = arg;
 483                 if (fmt->fmt.pix.height < 640) {
 484                         write_reg_fp(client, 0x12b, dec->reg12b_val | 0x400);
 485                         write_reg_fp(client, 0x140, 0x060);
 486                 } else {
 487                         write_reg_fp(client, 0x12b, dec->reg12b_val & ~0x400);
 488                         write_reg_fp(client, 0x140, 0x060);
 489                 }
 490                 return 0;
 491         }
 492         case VIDIOC_G_AUDIO:
 493         {
 494                 struct v4l2_audio *audio = arg;
 495
 496                 memset(audio, 0, sizeof(*audio));
 497                 audio->index = dec->audio_input;
 498                 /* fall through */
 499         }
 500         case VIDIOC_ENUMAUDIO:
 501         {
 502                 struct v4l2_audio *audio = arg;
 503
 504                 switch (audio->index) {
 505                 case 0:
 506                         strcpy(audio->name, "Line In");
 507                         break;
 508                 case 1:
 509                         strcpy(audio->name, "Mic");
 510                         break;
 511                 case 2:
 512                         strcpy(audio->name, "Mic Boost");
 513                         break;
 514                 default:
 515                         audio->name[0] = '\0';
 516                         return 0;
 517                 }
 518                 audio->capability = V4L2_AUDCAP_STEREO;
 519                 audio->mode = 0;
 520                 return 0;
 521         }
 522         case VIDIOC_S_AUDIO:
 523         {
 524                 struct v4l2_audio *audio = arg;
 525
 526                 switch (audio->index) {
 527                 case 0:
 528                         write_reg(dec->audio, 0x08, 0x02); /* Line In */
 529                         break;
 530                 case 1:
 531                         write_reg(dec->audio, 0x08, 0x04); /* Mic */
 532                         break;
 533                 case 2:
 534                         write_reg(dec->audio, 0x08, 0x05); /* Mic Boost */
 535                         break;
 536                 default:
 537                         return -EINVAL;
 538                 }
 539                 dec->audio_input = audio->index;
 540                 return 0;
 541         }
 542
 543         default:
 544                 printk(KERN_INFO "s2250: unknown command 0x%x\n", cmd);
 545                 break;
 546         }
 547         return 0;
 548 }
 549
 550 static int s2250_probe(struct i2c_client *client,
 551                        const struct i2c_device_id *id)
 552 {
 553         struct i2c_client *audio;
 554         struct i2c_adapter *adapter = client->adapter;
 555         struct s2250 *dec;
 556         u8 *data;
 557         struct go7007 *go = i2c_get_adapdata(adapter);
 558         struct go7007_usb *usb = go->hpi_context;
 559
 560         audio = i2c_new_dummy(adapter, TLV320_ADDRESS >> 1);
 561         if (audio == NULL)
 562                 return -ENOMEM;
 563
 564         dec = kmalloc(sizeof(struct s2250), GFP_KERNEL);
 565         if (dec == NULL) {
 566                 i2c_unregister_device(audio);
 567                 return -ENOMEM;
 568         }
 569
 570         dec->std = V4L2_STD_NTSC;
 571         dec->brightness = 50;
 572         dec->contrast = 50;
 573         dec->saturation = 50;
 574         dec->hue = 0;
 575         dec->audio = audio;
 576         i2c_set_clientdata(client, dec);
 577
 578         printk(KERN_DEBUG
 579                "s2250: initializing video decoder on %s\n",
 580                adapter->name);
 581
 582         /* initialize the audio */
 583         if (write_regs(audio, aud_regs) < 0) {
 584                 printk(KERN_ERR
 585                        "s2250: error initializing audio\n");
 586                 i2c_unregister_device(audio);
 587                 kfree(dec);
 588                 return 0;
 589         }
 590
 591         if (write_regs(client, vid_regs) < 0) {
 592                 printk(KERN_ERR
 593                        "s2250: error initializing decoder\n");
 594                 i2c_unregister_device(audio);
 595                 kfree(dec);
 596                 return 0;
 597         }
 598         if (write_regs_fp(client, vid_regs_fp) < 0) {
 599                 printk(KERN_ERR
 600                        "s2250: error initializing decoder\n");
 601                 i2c_unregister_device(audio);
 602                 kfree(dec);
 603                 return 0;
 604         }
 605         /* set default channel */
 606         /* composite */
 607         write_reg_fp(client, 0x20, 0x020 | 1);
 608         write_reg_fp(client, 0x21, 0x662);
 609         write_reg_fp(client, 0x140, 0x060);
 610
 611         /* set default audio input */
 612         dec->audio_input = 0;
 613         write_reg(client, 0x08, 0x02); /* Line In */
 614
 615         if (mutex_lock_interruptible(&usb->i2c_lock) == 0) {
 616                 data = kzalloc(16, GFP_KERNEL);
 617                 if (data != NULL) {
 618                         int rc;
 619                         rc = go7007_usb_vendor_request(go, 0x41, 0, 0,
 620                                                        data, 16, 1);
 621                         if (rc > 0) {
 622                                 u8 mask;
 623                                 data[0] = 0;
 624                                 mask = 1<<5;
 625                                 data[0] &= ~mask;
 626                                 data[1] |= mask;
 627                                 go7007_usb_vendor_request(go, 0x40, 0,
 628                                                           (data[1]<<8)
 629                                                           + data[1],
 630                                                           data, 16, 0);
 631                         }
 632                         kfree(data);
 633                 }
 634                 mutex_unlock(&usb->i2c_lock);
 635         }
 636
 637         printk("s2250: initialized successfully\n");
 638         return 0;
 639 }
 640
 641 static int s2250_remove(struct i2c_client *client)
 642 {
 643         struct s2250 *dec = i2c_get_clientdata(client);
 644
 645         i2c_set_clientdata(client, NULL);
 646         i2c_unregister_device(dec->audio);
 647         kfree(dec);
 648         return 0;
 649 }
 650
 651 static struct i2c_device_id s2250_id[] = {
 652         { "s2250_board", 0 },
 653         { }
 654 };
 655
 656 static struct i2c_driver s2250_driver = {
 657         .driver = {
 658                 .name   = "Sensoray 2250 board driver",
 659         },
 660         .probe          = s2250_probe,
 661         .remove         = s2250_remove,
 662         .command        = s2250_command,
 663         .id_table       = s2250_id,
 664 };
 665
 666 static int __init s2250_init(void)
 667 {
 668         int r;
 669
 670         r = s2250loader_init();
 671         if (r < 0)
 672                 return r;
 673
 674         r = i2c_add_driver(&s2250_driver);
 675         if (r < 0)
 676                 s2250loader_cleanup();
 677
 678         return r;
 679 }
 680
 681 static void __exit s2250_cleanup(void)
 682 {
 683         i2c_del_driver(&s2250_driver);
 684
 685         s2250loader_cleanup();
 686 }
 687
 688 module_init(s2250_init);
 689 module_exit(s2250_cleanup);
 690
 691 MODULE_AUTHOR("");
 692 MODULE_DESCRIPTION("Board driver for Sensoryray 2250");
 693 MODULE_LICENSE("GPL v2");