drivers/media/video/dpc7146.c

   1 /*
   2     dpc7146.c - v4l2 driver for the dpc7146 demonstration board
   3
   4     Copyright (C) 2000-2003 Michael Hunold <michael@mihu.de>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #define DEBUG_VARIABLE debug
  22
  23 #include <media/saa7146_vv.h>
  24 #include <linux/video_decoder.h>        /* for saa7111a */
  25
  26 #define I2C_SAA7111A            0x24
  27
  28 /* All unused bytes are reserverd. */
  29 #define SAA711X_CHIP_VERSION            0x00
  30 #define SAA711X_ANALOG_INPUT_CONTROL_1  0x02
  31 #define SAA711X_ANALOG_INPUT_CONTROL_2  0x03
  32 #define SAA711X_ANALOG_INPUT_CONTROL_3  0x04
  33 #define SAA711X_ANALOG_INPUT_CONTROL_4  0x05
  34 #define SAA711X_HORIZONTAL_SYNC_START   0x06
  35 #define SAA711X_HORIZONTAL_SYNC_STOP    0x07
  36 #define SAA711X_SYNC_CONTROL            0x08
  37 #define SAA711X_LUMINANCE_CONTROL       0x09
  38 #define SAA711X_LUMINANCE_BRIGHTNESS    0x0A
  39 #define SAA711X_LUMINANCE_CONTRAST      0x0B
  40 #define SAA711X_CHROMA_SATURATION       0x0C
  41 #define SAA711X_CHROMA_HUE_CONTROL      0x0D
  42 #define SAA711X_CHROMA_CONTROL          0x0E
  43 #define SAA711X_FORMAT_DELAY_CONTROL    0x10
  44 #define SAA711X_OUTPUT_CONTROL_1        0x11
  45 #define SAA711X_OUTPUT_CONTROL_2        0x12
  46 #define SAA711X_OUTPUT_CONTROL_3        0x13
  47 #define SAA711X_V_GATE_1_START          0x15
  48 #define SAA711X_V_GATE_1_STOP           0x16
  49 #define SAA711X_V_GATE_1_MSB            0x17
  50 #define SAA711X_TEXT_SLICER_STATUS      0x1A
  51 #define SAA711X_DECODED_BYTES_OF_TS_1   0x1B
  52 #define SAA711X_DECODED_BYTES_OF_TS_2   0x1C
  53 #define SAA711X_STATUS_BYTE             0x1F
  54
  55 #define DPC_BOARD_CAN_DO_VBI(dev)   (dev->revision != 0)
  56
  57 static int debug = 0;
  58 module_param(debug, int, 0);
  59 MODULE_PARM_DESC(debug, "debug verbosity");
  60
  61 static int dpc_num = 0;
  62
  63 #define DPC_INPUTS      2
  64 static struct v4l2_input dpc_inputs[DPC_INPUTS] = {
  65         { 0, "Port A",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  66         { 1, "Port B",  V4L2_INPUT_TYPE_CAMERA, 2, 0, V4L2_STD_PAL_BG|V4L2_STD_NTSC_M, 0 },
  67 };
  68
  69 #define DPC_AUDIOS      0
  70
  71 static struct saa7146_extension_ioctls ioctls[] = {
  72         { VIDIOC_G_INPUT,       SAA7146_EXCLUSIVE },
  73         { VIDIOC_S_INPUT,       SAA7146_EXCLUSIVE },
  74         { VIDIOC_ENUMINPUT,     SAA7146_EXCLUSIVE },
  75         { VIDIOC_S_STD,         SAA7146_AFTER },
  76         { 0,                    0 }
  77 };
  78
  79 struct dpc
  80 {
  81         struct video_device     *video_dev;
  82         struct video_device     *vbi_dev;
  83
  84         struct i2c_adapter      i2c_adapter;
  85         struct i2c_client       *saa7111a;
  86
  87         int cur_input;  /* current input */
  88 };
  89
  90 /* fixme: add vbi stuff here */
  91 static int dpc_probe(struct saa7146_dev* dev)
  92 {
  93         struct dpc* dpc = NULL;
  94         struct i2c_client *client;
  95         struct list_head *item;
  96
  97         dpc = (struct dpc*)kmalloc(sizeof(struct dpc), GFP_KERNEL);
  98         if( NULL == dpc ) {
  99                 printk("dpc_v4l2.o: dpc_probe: not enough kernel memory.\n");
 100                 return -ENOMEM;
 101         }
 102         memset(dpc, 0x0, sizeof(struct dpc));
 103
 104         /* FIXME: enable i2c-port pins, video-port-pins
 105            video port pins should be enabled here ?! */
 106         saa7146_write(dev, MC1, (MASK_08 | MASK_24 | MASK_10 | MASK_26));
 107
 108         dpc->i2c_adapter = (struct i2c_adapter) {
 109                 .class = I2C_CLASS_TV_ANALOG,
 110                 .name = "dpc7146",
 111         };
 112         saa7146_i2c_adapter_prepare(dev, &dpc->i2c_adapter, SAA7146_I2C_BUS_BIT_RATE_480);
 113         if(i2c_add_adapter(&dpc->i2c_adapter) < 0) {
 114                 DEB_S(("cannot register i2c-device. skipping.\n"));
 115                 kfree(dpc);
 116                 return -EFAULT;
 117         }
 118
 119         /* loop through all i2c-devices on the bus and look who is there */
 120         list_for_each(item,&dpc->i2c_adapter.clients) {
 121                 client = list_entry(item, struct i2c_client, list);
 122                 if( I2C_SAA7111A == client->addr )
 123                         dpc->saa7111a = client;
 124         }
 125
 126         /* check if all devices are present */
 127         if( 0 == dpc->saa7111a ) {
 128                 DEB_D(("dpc_v4l2.o: dpc_attach failed for this device.\n"));
 129                 i2c_del_adapter(&dpc->i2c_adapter);
 130                 kfree(dpc);
 131                 return -ENODEV;
 132         }
 133
 134         /* all devices are present, probe was successful */
 135         DEB_D(("dpc_v4l2.o: dpc_probe succeeded for this device.\n"));
 136
 137         /* we store the pointer in our private data field */
 138         dev->ext_priv = dpc;
 139
 140         return 0;
 141 }
 142
 143 /* bring hardware to a sane state. this has to be done, just in case someone
 144    wants to capture from this device before it has been properly initialized.
 145    the capture engine would badly fail, because no valid signal arrives on the
 146    saa7146, thus leading to timeouts and stuff. */
 147 static int dpc_init_done(struct saa7146_dev* dev)
 148 {
 149         struct dpc* dpc = (struct dpc*)dev->ext_priv;
 150
 151         DEB_D(("dpc_v4l2.o: dpc_init_done called.\n"));
 152
 153         /* initialize the helper ics to useful values */
 154         i2c_smbus_write_byte_data(dpc->saa7111a, 0x00, 0x11);
 155
 156         i2c_smbus_write_byte_data(dpc->saa7111a, 0x02, 0xc0);
 157         i2c_smbus_write_byte_data(dpc->saa7111a, 0x03, 0x30);
 158         i2c_smbus_write_byte_data(dpc->saa7111a, 0x04, 0x00);
 159         i2c_smbus_write_byte_data(dpc->saa7111a, 0x05, 0x00);
 160         i2c_smbus_write_byte_data(dpc->saa7111a, 0x06, 0xde);
 161         i2c_smbus_write_byte_data(dpc->saa7111a, 0x07, 0xad);
 162         i2c_smbus_write_byte_data(dpc->saa7111a, 0x08, 0xa8);
 163         i2c_smbus_write_byte_data(dpc->saa7111a, 0x09, 0x00);
 164         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0a, 0x80);
 165         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0b, 0x47);
 166         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0c, 0x40);
 167         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0d, 0x00);
 168         i2c_smbus_write_byte_data(dpc->saa7111a, 0x0e, 0x03);
 169
 170         i2c_smbus_write_byte_data(dpc->saa7111a, 0x10, 0xd0);
 171         i2c_smbus_write_byte_data(dpc->saa7111a, 0x11, 0x1c);
 172         i2c_smbus_write_byte_data(dpc->saa7111a, 0x12, 0xc1);
 173         i2c_smbus_write_byte_data(dpc->saa7111a, 0x13, 0x30);
 174
 175         i2c_smbus_write_byte_data(dpc->saa7111a, 0x1f, 0x81);
 176
 177         return 0;
 178 }
 179
 180 static struct saa7146_ext_vv vv_data;
 181
 182 /* this function only gets called when the probing was successful */
 183 static int dpc_attach(struct saa7146_dev* dev, struct saa7146_pci_extension_data *info)
 184 {
 185         struct dpc* dpc = (struct dpc*)dev->ext_priv;
 186
 187         DEB_D(("dpc_v4l2.o: dpc_attach called.\n"));
 188
 189         /* checking for i2c-devices can be omitted here, because we
 190            already did this in "dpc_vl42_probe" */
 191
 192         saa7146_vv_init(dev,&vv_data);
 193         if( 0 != saa7146_register_device(&dpc->video_dev, dev, "dpc", VFL_TYPE_GRABBER)) {
 194                 ERR(("cannot register capture v4l2 device. skipping.\n"));
 195                 return -1;
 196         }
 197
 198         /* initialization stuff (vbi) (only for revision > 0 and for extensions which want it)*/
 199         if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
 200                 if( 0 != saa7146_register_device(&dpc->vbi_dev, dev, "dpc", VFL_TYPE_VBI)) {
 201                         ERR(("cannot register vbi v4l2 device. skipping.\n"));
 202                 }
 203         }
 204
 205         i2c_use_client(dpc->saa7111a);
 206
 207         printk("dpc: found 'dpc7146 demonstration board'-%d.\n",dpc_num);
 208         dpc_num++;
 209
 210         /* the rest */
 211         dpc->cur_input = 0;
 212         dpc_init_done(dev);
 213
 214         return 0;
 215 }
 216
 217 static int dpc_detach(struct saa7146_dev* dev)
 218 {
 219         struct dpc* dpc = (struct dpc*)dev->ext_priv;
 220
 221         DEB_EE(("dev:%p\n",dev));
 222
 223         i2c_release_client(dpc->saa7111a);
 224
 225         saa7146_unregister_device(&dpc->video_dev,dev);
 226         if( 0 != DPC_BOARD_CAN_DO_VBI(dev)) {
 227                 saa7146_unregister_device(&dpc->vbi_dev,dev);
 228         }
 229         saa7146_vv_release(dev);
 230
 231         dpc_num--;
 232
 233         i2c_del_adapter(&dpc->i2c_adapter);
 234         kfree(dpc);
 235         return 0;
 236 }
 237
 238 #ifdef axa
 239 int dpc_vbi_bypass(struct saa7146_dev* dev)
 240 {
 241         struct dpc* dpc = (struct dpc*)dev->ext_priv;
 242
 243         int i = 1;
 244
 245         /* switch bypass in saa7111a */
 246         if ( 0 != dpc->saa7111a->driver->command(dpc->saa7111a,SAA711X_VBI_BYPASS, &i)) {
 247                 printk("dpc_v4l2.o: VBI_BYPASS: could not address saa7111a.\n");
 248                 return -1;
 249         }
 250
 251         return 0;
 252 }
 253 #endif
 254
 255 static int dpc_ioctl(struct saa7146_fh *fh, unsigned int cmd, void *arg)
 256 {
 257         struct saa7146_dev *dev = fh->dev;
 258         struct dpc* dpc = (struct dpc*)dev->ext_priv;
 259 /*
 260         struct saa7146_vv *vv = dev->vv_data;
 261 */
 262         switch(cmd)
 263         {
 264         case VIDIOC_ENUMINPUT:
 265         {
 266                 struct v4l2_input *i = arg;
 267                 DEB_EE(("VIDIOC_ENUMINPUT %d.\n",i->index));
 268
 269                 if( i->index < 0 || i->index >= DPC_INPUTS) {
 270                         return -EINVAL;
 271                 }
 272
 273                 memcpy(i, &dpc_inputs[i->index], sizeof(struct v4l2_input));
 274
 275                 DEB_D(("dpc_v4l2.o: v4l2_ioctl: VIDIOC_ENUMINPUT %d.\n",i->index));
 276                 return 0;
 277         }
 278         case VIDIOC_G_INPUT:
 279         {
 280                 int *input = (int *)arg;
 281                 *input = dpc->cur_input;
 282
 283                 DEB_D(("dpc_v4l2.o: VIDIOC_G_INPUT: %d\n",*input));
 284                 return 0;
 285         }
 286         case VIDIOC_S_INPUT:
 287         {
 288                 int     input = *(int *)arg;
 289
 290                 if (input < 0 || input >= DPC_INPUTS) {
 291                         return -EINVAL;
 292                 }
 293
 294                 dpc->cur_input = input;
 295
 296                 /* fixme: switch input here, switch audio, too! */
 297 //              saa7146_set_hps_source_and_sync(dev, input_port_selection[input].hps_source, input_port_selection[input].hps_sync);
 298                 printk("dpc_v4l2.o: VIDIOC_S_INPUT: fixme switch input.\n");
 299
 300                 return 0;
 301         }
 302         default:
 303 /*
 304                 DEB_D(("dpc_v4l2.o: v4l2_ioctl does not handle this ioctl.\n"));
 305 */
 306                 return -ENOIOCTLCMD;
 307         }
 308         return 0;
 309 }
 310
 311 static int std_callback(struct saa7146_dev* dev, struct saa7146_standard *std)
 312 {
 313         return 0;
 314 }
 315
 316 static struct saa7146_standard standard[] = {
 317         {
 318                 .name   = "PAL",        .id     = V4L2_STD_PAL,
 319                 .v_offset       = 0x17, .v_field        = 288,
 320                 .h_offset       = 0x14, .h_pixels       = 680,
 321                 .v_max_out      = 576,  .h_max_out      = 768,
 322         }, {
 323                 .name   = "NTSC",       .id     = V4L2_STD_NTSC,
 324                 .v_offset       = 0x16, .v_field        = 240,
 325                 .h_offset       = 0x06, .h_pixels       = 708,
 326                 .v_max_out      = 480,  .h_max_out      = 640,
 327         }, {
 328                 .name   = "SECAM",      .id     = V4L2_STD_SECAM,
 329                 .v_offset       = 0x14, .v_field        = 288,
 330                 .h_offset       = 0x14, .h_pixels       = 720,
 331                 .v_max_out      = 576,  .h_max_out      = 768,
 332         }
 333 };
 334
 335 static struct saa7146_extension extension;
 336
 337 static struct saa7146_pci_extension_data dpc = {
 338         .ext_priv = "Multimedia eXtension Board",
 339         .ext = &extension,
 340 };
 341
 342 static struct pci_device_id pci_tbl[] = {
 343         {
 344                 .vendor    = PCI_VENDOR_ID_PHILIPS,
 345                 .device    = PCI_DEVICE_ID_PHILIPS_SAA7146,
 346                 .subvendor = 0x0000,
 347                 .subdevice = 0x0000,
 348                 .driver_data = (unsigned long)&dpc,
 349         }, {
 350                 .vendor = 0,
 351         }
 352 };
 353
 354 MODULE_DEVICE_TABLE(pci, pci_tbl);
 355
 356 static struct saa7146_ext_vv vv_data = {
 357         .inputs         = DPC_INPUTS,
 358         .capabilities   = V4L2_CAP_VBI_CAPTURE,
 359         .stds           = &standard[0],
 360         .num_stds       = sizeof(standard)/sizeof(struct saa7146_standard),
 361         .std_callback   = &std_callback,
 362         .ioctls         = &ioctls[0],
 363         .ioctl          = dpc_ioctl,
 364 };
 365
 366 static struct saa7146_extension extension = {
 367         .name           = "dpc7146 demonstration board",
 368         .flags          = SAA7146_USE_I2C_IRQ,
 369
 370         .pci_tbl        = &pci_tbl[0],
 371         .module         = THIS_MODULE,
 372
 373         .probe          = dpc_probe,
 374         .attach         = dpc_attach,
 375         .detach         = dpc_detach,
 376
 377         .irq_mask       = 0,
 378         .irq_func       = NULL,
 379 };
 380
 381 static int __init dpc_init_module(void)
 382 {
 383         if( 0 != saa7146_register_extension(&extension)) {
 384                 DEB_S(("failed to register extension.\n"));
 385                 return -ENODEV;
 386         }
 387
 388         return 0;
 389 }
 390
 391 static void __exit dpc_cleanup_module(void)
 392 {
 393         saa7146_unregister_extension(&extension);
 394 }
 395
 396 module_init(dpc_init_module);
 397 module_exit(dpc_cleanup_module);
 398
 399 MODULE_DESCRIPTION("video4linux-2 driver for the 'dpc7146 demonstration board'");
 400 MODULE_AUTHOR("Michael Hunold <michael@mihu.de>");
 401 MODULE_LICENSE("GPL");