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