drivers/media/video/hexium_gemini.c

   1 /*
   2     hexium_gemini.c - v4l2 driver for Hexium Gemini frame grabber cards
   3
   4     Visit http://www.mihu.de/linux/saa7146/ and follow the link
   5     to "hexium" for further details about this card.
   6
   7     Copyright (C) 2003 Michael Hunold <michael@mihu.de>
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17     GNU General Public License for more details.
  18
  19     You should have received a copy of the GNU General Public License
  20     along with this program; if not, write to the Free Software
  21     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #define DEBUG_VARIABLE debug
  25
  26 #include <media/saa7146_vv.h>
  27
  28 static int debug;
  29 module_param(debug, int, 0);
  30 MODULE_PARM_DESC(debug, "debug verbosity");
  31
  32 /* global variables */
  33 static int hexium_num;
  34
  35 #define HEXIUM_GEMINI                   4
  36 #define HEXIUM_GEMINI_DUAL              5
  37
  38 #define HEXIUM_INPUTS   9
  39 static struct v4l2_input hexium_inputs[HEXIUM_INPUTS] = {
  40         { 0, "CVBS 1",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  41         { 1, "CVBS 2",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  42         { 2, "CVBS 3",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  43         { 3, "CVBS 4",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  44         { 4, "CVBS 5",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  45         { 5, "CVBS 6",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  46         { 6, "Y/C 1",   V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  47         { 7, "Y/C 2",   V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  48         { 8, "Y/C 3",   V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  49 };
  50
  51 #define HEXIUM_AUDIOS   0
  52
  53 struct hexium_data
  54 {
  55         s8 adr;
  56         u8 byte;
  57 };
  58
  59 #define HEXIUM_CONTROLS 1
  60 static struct v4l2_queryctrl hexium_controls[] = {
  61         { V4L2_CID_PRIVATE_BASE, V4L2_CTRL_TYPE_BOOLEAN, "B/W", 0, 1, 1, 0, 0 },
  62 };
  63
  64 #define HEXIUM_GEMINI_V_1_0             1
  65 #define HEXIUM_GEMINI_DUAL_V_1_0        2
  66
  67 struct hexium
  68 {
  69         int type;
  70
  71         struct video_device     *video_dev;
  72         struct i2c_adapter      i2c_adapter;
  73
  74         int             cur_input;      /* current input */
  75         v4l2_std_id     cur_std;        /* current standard */
  76         int             cur_bw;         /* current black/white status */
  77 };
  78
  79 /* Samsung KS0127B decoder default registers */
  80 static u8 hexium_ks0127b[0x100]={
  81 /*00*/ 0x00,0x52,0x30,0x40,0x01,0x0C,0x2A,0x10,
  82 /*08*/ 0x00,0x00,0x00,0x60,0x00,0x00,0x0F,0x06,
  83 /*10*/ 0x00,0x00,0xE4,0xC0,0x00,0x00,0x00,0x00,
  84 /*18*/ 0x14,0x9B,0xFE,0xFF,0xFC,0xFF,0x03,0x22,
  85 /*20*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  86 /*28*/ 0x00,0x00,0x00,0x00,0x00,0x2C,0x9B,0x00,
  87 /*30*/ 0x00,0x00,0x10,0x80,0x80,0x10,0x80,0x80,
  88 /*38*/ 0x01,0x04,0x00,0x00,0x00,0x29,0xC0,0x00,
  89 /*40*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  90 /*48*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  91 /*50*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  92 /*58*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  93 /*60*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  94 /*68*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  95 /*70*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  96 /*78*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  97 /*80*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  98 /*88*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
  99 /*90*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 100 /*98*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 101 /*A0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 102 /*A8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 103 /*B0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 104 /*B8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 105 /*C0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 106 /*C8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 107 /*D0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 108 /*D8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 109 /*E0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 110 /*E8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 111 /*F0*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 112 /*F8*/ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
 113 };
 114
 115 static struct hexium_data hexium_pal[] = {
 116         { 0x01, 0x52 }, { 0x12, 0x64 }, { 0x2D, 0x2C }, { 0x2E, 0x9B }, { -1 , 0xFF }
 117 };
 118
 119 static struct hexium_data hexium_pal_bw[] = {
 120         { 0x01, 0x52 }, { 0x12, 0x64 }, { 0x2D, 0x2C }, { 0x2E, 0x9B }, { -1 , 0xFF }
 121 };
 122
 123 static struct hexium_data hexium_ntsc[] = {
 124         { 0x01, 0x53 }, { 0x12, 0x04 }, { 0x2D, 0x23 }, { 0x2E, 0x81 }, { -1 , 0xFF }
 125 };
 126
 127 static struct hexium_data hexium_ntsc_bw[] = {
 128         { 0x01, 0x53 }, { 0x12, 0x04 }, { 0x2D, 0x23 }, { 0x2E, 0x81 }, { -1 , 0xFF }
 129 };
 130
 131 static struct hexium_data hexium_secam[] = {
 132         { 0x01, 0x52 }, { 0x12, 0x64 }, { 0x2D, 0x2C }, { 0x2E, 0x9B }, { -1 , 0xFF }
 133 };
 134
 135 static struct hexium_data hexium_input_select[] = {
 136         { 0x02, 0x60 },
 137         { 0x02, 0x64 },
 138         { 0x02, 0x61 },
 139         { 0x02, 0x65 },
 140         { 0x02, 0x62 },
 141         { 0x02, 0x66 },
 142         { 0x02, 0x68 },
 143         { 0x02, 0x69 },
 144         { 0x02, 0x6A },
 145 };
 146
 147 /* fixme: h_offset = 0 for Hexium Gemini *Dual*, which
 148    are currently *not* supported*/
 149 static struct saa7146_standard hexium_standards[] = {
 150         {
 151                 .name   = "PAL",        .id     = V4L2_STD_PAL,
 152                 .v_offset       = 28,   .v_field        = 288,
 153                 .h_offset       = 1,    .h_pixels       = 680,
 154                 .v_max_out      = 576,  .h_max_out      = 768,
 155         }, {
 156                 .name   = "NTSC",       .id     = V4L2_STD_NTSC,
 157                 .v_offset       = 28,   .v_field        = 240,
 158                 .h_offset       = 1,    .h_pixels       = 640,
 159                 .v_max_out      = 480,  .h_max_out      = 640,
 160         }, {
 161                 .name   = "SECAM",      .id     = V4L2_STD_SECAM,
 162                 .v_offset       = 28,   .v_field        = 288,
 163                 .h_offset       = 1,    .h_pixels       = 720,
 164                 .v_max_out      = 576,  .h_max_out      = 768,
 165         }
 166 };
 167
 168 /* bring hardware to a sane state. this has to be done, just in case someone
 169    wants to capture from this device before it has been properly initialized.
 170    the capture engine would badly fail, because no valid signal arrives on the
 171    saa7146, thus leading to timeouts and stuff. */
 172 static int hexium_init_done(struct saa7146_dev *dev)
 173 {
 174         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 175         union i2c_smbus_data data;
 176         int i = 0;
 177
 178         DEB_D(("hexium_init_done called.\n"));
 179
 180         /* initialize the helper ics to useful values */
 181         for (i = 0; i < sizeof(hexium_ks0127b); i++) {
 182                 data.byte = hexium_ks0127b[i];
 183                 if (0 != i2c_smbus_xfer(&hexium->i2c_adapter, 0x6c, 0, I2C_SMBUS_WRITE, i, I2C_SMBUS_BYTE_DATA, &data)) {
 184                         printk("hexium_gemini: hexium_init_done() failed for address 0x%02x\n", i);
 185                 }
 186         }
 187
 188         return 0;
 189 }
 190
 191 static int hexium_set_input(struct hexium *hexium, int input)
 192 {
 193         union i2c_smbus_data data;
 194
 195         DEB_D((".\n"));
 196
 197         data.byte = hexium_input_select[input].byte;
 198         if (0 != i2c_smbus_xfer(&hexium->i2c_adapter, 0x6c, 0, I2C_SMBUS_WRITE, hexium_input_select[input].adr, I2C_SMBUS_BYTE_DATA, &data)) {
 199                 return -1;
 200         }
 201
 202         return 0;
 203 }
 204
 205 static int hexium_set_standard(struct hexium *hexium, struct hexium_data *vdec)
 206 {
 207         union i2c_smbus_data data;
 208         int i = 0;
 209
 210         DEB_D((".\n"));
 211
 212         while (vdec[i].adr != -1) {
 213                 data.byte = vdec[i].byte;
 214                 if (0 != i2c_smbus_xfer(&hexium->i2c_adapter, 0x6c, 0, I2C_SMBUS_WRITE, vdec[i].adr, I2C_SMBUS_BYTE_DATA, &data)) {
 215                         printk("hexium_init_done: hexium_set_standard() failed for address 0x%02x\n", i);
 216                         return -1;
 217                 }
 218                 i++;
 219         }
 220         return 0;
 221 }
 222
 223 static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
 224 {
 225         DEB_EE(("VIDIOC_ENUMINPUT %d.\n", i->index));
 226
 227         if (i->index >= HEXIUM_INPUTS)
 228                 return -EINVAL;
 229
 230         memcpy(i, &hexium_inputs[i->index], sizeof(struct v4l2_input));
 231
 232         DEB_D(("v4l2_ioctl: VIDIOC_ENUMINPUT %d.\n", i->index));
 233         return 0;
 234 }
 235
 236 static int vidioc_g_input(struct file *file, void *fh, unsigned int *input)
 237 {
 238         struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
 239         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 240
 241         *input = hexium->cur_input;
 242
 243         DEB_D(("VIDIOC_G_INPUT: %d\n", *input));
 244         return 0;
 245 }
 246
 247 static int vidioc_s_input(struct file *file, void *fh, unsigned int input)
 248 {
 249         struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
 250         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 251
 252         DEB_EE(("VIDIOC_S_INPUT %d.\n", input));
 253
 254         if (input < 0 || input >= HEXIUM_INPUTS)
 255                 return -EINVAL;
 256
 257         hexium->cur_input = input;
 258         hexium_set_input(hexium, input);
 259         return 0;
 260 }
 261
 262 /* the saa7146 provides some controls (brightness, contrast, saturation)
 263    which gets registered *after* this function. because of this we have
 264    to return with a value != 0 even if the function succeded.. */
 265 static int vidioc_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qc)
 266 {
 267         struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
 268         int i;
 269
 270         for (i = HEXIUM_CONTROLS - 1; i >= 0; i--) {
 271                 if (hexium_controls[i].id == qc->id) {
 272                         *qc = hexium_controls[i];
 273                         DEB_D(("VIDIOC_QUERYCTRL %d.\n", qc->id));
 274                         return 0;
 275                 }
 276         }
 277         return dev->ext_vv_data->core_ops->vidioc_queryctrl(file, fh, qc);
 278 }
 279
 280 static int vidioc_g_ctrl(struct file *file, void *fh, struct v4l2_control *vc)
 281 {
 282         struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
 283         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 284         int i;
 285
 286         for (i = HEXIUM_CONTROLS - 1; i >= 0; i--) {
 287                 if (hexium_controls[i].id == vc->id)
 288                         break;
 289         }
 290
 291         if (i < 0)
 292                 return dev->ext_vv_data->core_ops->vidioc_g_ctrl(file, fh, vc);
 293
 294         if (vc->id == V4L2_CID_PRIVATE_BASE) {
 295                 vc->value = hexium->cur_bw;
 296                 DEB_D(("VIDIOC_G_CTRL BW:%d.\n", vc->value));
 297                 return 0;
 298         }
 299         return -EINVAL;
 300 }
 301
 302 static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *vc)
 303 {
 304         struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
 305         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 306         int i = 0;
 307
 308         for (i = HEXIUM_CONTROLS - 1; i >= 0; i--) {
 309                 if (hexium_controls[i].id == vc->id)
 310                         break;
 311         }
 312
 313         if (i < 0)
 314                 return dev->ext_vv_data->core_ops->vidioc_s_ctrl(file, fh, vc);
 315
 316         if (vc->id == V4L2_CID_PRIVATE_BASE)
 317                 hexium->cur_bw = vc->value;
 318
 319         DEB_D(("VIDIOC_S_CTRL BW:%d.\n", hexium->cur_bw));
 320
 321         if (0 == hexium->cur_bw && V4L2_STD_PAL == hexium->cur_std) {
 322                 hexium_set_standard(hexium, hexium_pal);
 323                 return 0;
 324         }
 325         if (0 == hexium->cur_bw && V4L2_STD_NTSC == hexium->cur_std) {
 326                 hexium_set_standard(hexium, hexium_ntsc);
 327                 return 0;
 328         }
 329         if (0 == hexium->cur_bw && V4L2_STD_SECAM == hexium->cur_std) {
 330                 hexium_set_standard(hexium, hexium_secam);
 331                 return 0;
 332         }
 333         if (1 == hexium->cur_bw && V4L2_STD_PAL == hexium->cur_std) {
 334                 hexium_set_standard(hexium, hexium_pal_bw);
 335                 return 0;
 336         }
 337         if (1 == hexium->cur_bw && V4L2_STD_NTSC == hexium->cur_std) {
 338                 hexium_set_standard(hexium, hexium_ntsc_bw);
 339                 return 0;
 340         }
 341         if (1 == hexium->cur_bw && V4L2_STD_SECAM == hexium->cur_std)
 342                 /* fixme: is there no bw secam mode? */
 343                 return -EINVAL;
 344
 345         return -EINVAL;
 346 }
 347
 348
 349 static struct saa7146_ext_vv vv_data;
 350
 351 /* this function only gets called when the probing was successful */
 352 static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
 353 {
 354         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 355
 356         DEB_EE((".\n"));
 357
 358         hexium = kzalloc(sizeof(struct hexium), GFP_KERNEL);
 359         if (NULL == hexium) {
 360                 printk("hexium_gemini: not enough kernel memory in hexium_attach().\n");
 361                 return -ENOMEM;
 362         }
 363         dev->ext_priv = hexium;
 364
 365         /* enable i2c-port pins */
 366         saa7146_write(dev, MC1, (MASK_08 | MASK_24 | MASK_10 | MASK_26));
 367
 368         hexium->i2c_adapter = (struct i2c_adapter) {
 369                 .class = I2C_CLASS_TV_ANALOG,
 370                 .name = "hexium gemini",
 371         };
 372         saa7146_i2c_adapter_prepare(dev, &hexium->i2c_adapter, SAA7146_I2C_BUS_BIT_RATE_480);
 373         if (i2c_add_adapter(&hexium->i2c_adapter) < 0) {
 374                 DEB_S(("cannot register i2c-device. skipping.\n"));
 375                 kfree(hexium);
 376                 return -EFAULT;
 377         }
 378
 379         /*  set HWControl GPIO number 2 */
 380         saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
 381
 382         saa7146_write(dev, DD1_INIT, 0x07000700);
 383         saa7146_write(dev, DD1_STREAM_B, 0x00000000);
 384         saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
 385
 386         /* the rest */
 387         hexium->cur_input = 0;
 388         hexium_init_done(dev);
 389
 390         hexium_set_standard(hexium, hexium_pal);
 391         hexium->cur_std = V4L2_STD_PAL;
 392
 393         hexium_set_input(hexium, 0);
 394         hexium->cur_input = 0;
 395
 396         saa7146_vv_init(dev, &vv_data);
 397         vv_data.ops.vidioc_queryctrl = vidioc_queryctrl;
 398         vv_data.ops.vidioc_g_ctrl = vidioc_g_ctrl;
 399         vv_data.ops.vidioc_s_ctrl = vidioc_s_ctrl;
 400         vv_data.ops.vidioc_enum_input = vidioc_enum_input;
 401         vv_data.ops.vidioc_g_input = vidioc_g_input;
 402         vv_data.ops.vidioc_s_input = vidioc_s_input;
 403         if (0 != saa7146_register_device(&hexium->video_dev, dev, "hexium gemini", VFL_TYPE_GRABBER)) {
 404                 printk("hexium_gemini: cannot register capture v4l2 device. skipping.\n");
 405                 return -1;
 406         }
 407
 408         printk("hexium_gemini: found 'hexium gemini' frame grabber-%d.\n", hexium_num);
 409         hexium_num++;
 410
 411         return 0;
 412 }
 413
 414 static int hexium_detach(struct saa7146_dev *dev)
 415 {
 416         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 417
 418         DEB_EE(("dev:%p\n", dev));
 419
 420         saa7146_unregister_device(&hexium->video_dev, dev);
 421         saa7146_vv_release(dev);
 422
 423         hexium_num--;
 424
 425         i2c_del_adapter(&hexium->i2c_adapter);
 426         kfree(hexium);
 427         return 0;
 428 }
 429
 430 static int std_callback(struct saa7146_dev *dev, struct saa7146_standard *std)
 431 {
 432         struct hexium *hexium = (struct hexium *) dev->ext_priv;
 433
 434         if (V4L2_STD_PAL == std->id) {
 435                 hexium_set_standard(hexium, hexium_pal);
 436                 hexium->cur_std = V4L2_STD_PAL;
 437                 return 0;
 438         } else if (V4L2_STD_NTSC == std->id) {
 439                 hexium_set_standard(hexium, hexium_ntsc);
 440                 hexium->cur_std = V4L2_STD_NTSC;
 441                 return 0;
 442         } else if (V4L2_STD_SECAM == std->id) {
 443                 hexium_set_standard(hexium, hexium_secam);
 444                 hexium->cur_std = V4L2_STD_SECAM;
 445                 return 0;
 446         }
 447
 448         return -1;
 449 }
 450
 451 static struct saa7146_extension hexium_extension;
 452
 453 static struct saa7146_pci_extension_data hexium_gemini_4bnc = {
 454         .ext_priv = "Hexium Gemini (4 BNC)",
 455         .ext = &hexium_extension,
 456 };
 457
 458 static struct saa7146_pci_extension_data hexium_gemini_dual_4bnc = {
 459         .ext_priv = "Hexium Gemini Dual (4 BNC)",
 460         .ext = &hexium_extension,
 461 };
 462
 463 static struct pci_device_id pci_tbl[] = {
 464         {
 465          .vendor = PCI_VENDOR_ID_PHILIPS,
 466          .device = PCI_DEVICE_ID_PHILIPS_SAA7146,
 467          .subvendor = 0x17c8,
 468          .subdevice = 0x2401,
 469          .driver_data = (unsigned long) &hexium_gemini_4bnc,
 470          },
 471         {
 472          .vendor = PCI_VENDOR_ID_PHILIPS,
 473          .device = PCI_DEVICE_ID_PHILIPS_SAA7146,
 474          .subvendor = 0x17c8,
 475          .subdevice = 0x2402,
 476          .driver_data = (unsigned long) &hexium_gemini_dual_4bnc,
 477          },
 478         {
 479          .vendor = 0,
 480          }
 481 };
 482
 483 MODULE_DEVICE_TABLE(pci, pci_tbl);
 484
 485 static struct saa7146_ext_vv vv_data = {
 486         .inputs = HEXIUM_INPUTS,
 487         .capabilities = 0,
 488         .stds = &hexium_standards[0],
 489         .num_stds = sizeof(hexium_standards) / sizeof(struct saa7146_standard),
 490         .std_callback = &std_callback,
 491 };
 492
 493 static struct saa7146_extension hexium_extension = {
 494         .name = "hexium gemini",
 495         .flags = SAA7146_USE_I2C_IRQ,
 496
 497         .pci_tbl = &pci_tbl[0],
 498         .module = THIS_MODULE,
 499
 500         .attach = hexium_attach,
 501         .detach = hexium_detach,
 502
 503         .irq_mask = 0,
 504         .irq_func = NULL,
 505 };
 506
 507 static int __init hexium_init_module(void)
 508 {
 509         if (0 != saa7146_register_extension(&hexium_extension)) {
 510                 DEB_S(("failed to register extension.\n"));
 511                 return -ENODEV;
 512         }
 513
 514         return 0;
 515 }
 516
 517 static void __exit hexium_cleanup_module(void)
 518 {
 519         saa7146_unregister_extension(&hexium_extension);
 520 }
 521
 522 module_init(hexium_init_module);
 523 module_exit(hexium_cleanup_module);
 524
 525 MODULE_DESCRIPTION("video4linux-2 driver for Hexium Gemini frame grabber cards");
 526 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
 527 MODULE_LICENSE("GPL");