Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * bt819 - BT819A VideoStream Decoder (Rockwell Part) |
| 3 | * |
| 4 | * Copyright (C) 1999 Mike Bernson <mike@mlb.org> |
| 5 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> |
| 6 | * |
| 7 | * Modifications for LML33/DC10plus unified driver |
| 8 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 9 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> |
| 11 | * - moved over to linux>=2.4.x i2c protocol (9/9/2002) |
| 12 | * |
| 13 | * This code was modify/ported from the saa7111 driver written |
| 14 | * by Dave Perks. |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License as published by |
| 18 | * the Free Software Foundation; either version 2 of the License, or |
| 19 | * (at your option) any later version. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, |
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | * GNU General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 29 | */ |
| 30 | |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/init.h> |
| 33 | #include <linux/delay.h> |
| 34 | #include <linux/errno.h> |
| 35 | #include <linux/fs.h> |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/major.h> |
| 38 | #include <linux/slab.h> |
| 39 | #include <linux/mm.h> |
| 40 | #include <linux/pci.h> |
| 41 | #include <linux/signal.h> |
| 42 | #include <asm/io.h> |
| 43 | #include <asm/pgtable.h> |
| 44 | #include <asm/page.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/types.h> |
| 46 | |
| 47 | #include <linux/videodev.h> |
| 48 | #include <asm/uaccess.h> |
| 49 | |
| 50 | MODULE_DESCRIPTION("Brooktree-819 video decoder driver"); |
| 51 | MODULE_AUTHOR("Mike Bernson & Dave Perks"); |
| 52 | MODULE_LICENSE("GPL"); |
| 53 | |
| 54 | #include <linux/i2c.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | #define I2C_NAME(s) (s)->name |
| 57 | |
| 58 | #include <linux/video_decoder.h> |
| 59 | |
| 60 | static int debug = 0; |
| 61 | module_param(debug, int, 0); |
| 62 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); |
| 63 | |
| 64 | #define dprintk(num, format, args...) \ |
| 65 | do { \ |
| 66 | if (debug >= num) \ |
| 67 | printk(format, ##args); \ |
| 68 | } while (0) |
| 69 | |
| 70 | /* ----------------------------------------------------------------------- */ |
| 71 | |
| 72 | struct bt819 { |
| 73 | unsigned char reg[32]; |
| 74 | |
| 75 | int initialized; |
| 76 | int norm; |
| 77 | int input; |
| 78 | int enable; |
| 79 | int bright; |
| 80 | int contrast; |
| 81 | int hue; |
| 82 | int sat; |
| 83 | }; |
| 84 | |
| 85 | struct timing { |
| 86 | int hactive; |
| 87 | int hdelay; |
| 88 | int vactive; |
| 89 | int vdelay; |
| 90 | int hscale; |
| 91 | int vscale; |
| 92 | }; |
| 93 | |
| 94 | /* for values, see the bt819 datasheet */ |
| 95 | static struct timing timing_data[] = { |
| 96 | {864 - 24, 20, 625 - 2, 1, 0x0504, 0x0000}, |
| 97 | {858 - 24, 20, 525 - 2, 1, 0x00f8, 0x0000}, |
| 98 | }; |
| 99 | |
| 100 | #define I2C_BT819 0x8a |
| 101 | |
| 102 | /* ----------------------------------------------------------------------- */ |
| 103 | |
| 104 | static inline int |
| 105 | bt819_write (struct i2c_client *client, |
| 106 | u8 reg, |
| 107 | u8 value) |
| 108 | { |
| 109 | struct bt819 *decoder = i2c_get_clientdata(client); |
| 110 | |
| 111 | decoder->reg[reg] = value; |
| 112 | return i2c_smbus_write_byte_data(client, reg, value); |
| 113 | } |
| 114 | |
| 115 | static inline int |
| 116 | bt819_setbit (struct i2c_client *client, |
| 117 | u8 reg, |
| 118 | u8 bit, |
| 119 | u8 value) |
| 120 | { |
| 121 | struct bt819 *decoder = i2c_get_clientdata(client); |
| 122 | |
| 123 | return bt819_write(client, reg, |
| 124 | (decoder-> |
| 125 | reg[reg] & ~(1 << bit)) | |
| 126 | (value ? (1 << bit) : 0)); |
| 127 | } |
| 128 | |
| 129 | static int |
| 130 | bt819_write_block (struct i2c_client *client, |
| 131 | const u8 *data, |
| 132 | unsigned int len) |
| 133 | { |
| 134 | int ret = -1; |
| 135 | u8 reg; |
| 136 | |
| 137 | /* the bt819 has an autoincrement function, use it if |
| 138 | * the adapter understands raw I2C */ |
| 139 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| 140 | /* do raw I2C, not smbus compatible */ |
| 141 | struct bt819 *decoder = i2c_get_clientdata(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | u8 block_data[32]; |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 143 | int block_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | while (len >= 2) { |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 146 | block_len = 0; |
| 147 | block_data[block_len++] = reg = data[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | do { |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 149 | block_data[block_len++] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | decoder->reg[reg++] = data[1]; |
| 151 | len -= 2; |
| 152 | data += 2; |
| 153 | } while (len >= 2 && data[0] == reg && |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 154 | block_len < 32); |
| 155 | if ((ret = i2c_master_send(client, block_data, |
| 156 | block_len)) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | break; |
| 158 | } |
| 159 | } else { |
| 160 | /* do some slow I2C emulation kind of thing */ |
| 161 | while (len >= 2) { |
| 162 | reg = *data++; |
| 163 | if ((ret = bt819_write(client, reg, *data++)) < 0) |
| 164 | break; |
| 165 | len -= 2; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | return ret; |
| 170 | } |
| 171 | |
| 172 | static inline int |
| 173 | bt819_read (struct i2c_client *client, |
| 174 | u8 reg) |
| 175 | { |
| 176 | return i2c_smbus_read_byte_data(client, reg); |
| 177 | } |
| 178 | |
| 179 | static int |
| 180 | bt819_init (struct i2c_client *client) |
| 181 | { |
| 182 | struct bt819 *decoder = i2c_get_clientdata(client); |
| 183 | |
| 184 | static unsigned char init[] = { |
| 185 | //0x1f, 0x00, /* Reset */ |
| 186 | 0x01, 0x59, /* 0x01 input format */ |
| 187 | 0x02, 0x00, /* 0x02 temporal decimation */ |
| 188 | 0x03, 0x12, /* 0x03 Cropping msb */ |
| 189 | 0x04, 0x16, /* 0x04 Vertical Delay, lsb */ |
| 190 | 0x05, 0xe0, /* 0x05 Vertical Active lsb */ |
| 191 | 0x06, 0x80, /* 0x06 Horizontal Delay lsb */ |
| 192 | 0x07, 0xd0, /* 0x07 Horizontal Active lsb */ |
| 193 | 0x08, 0x00, /* 0x08 Horizontal Scaling msb */ |
| 194 | 0x09, 0xf8, /* 0x09 Horizontal Scaling lsb */ |
| 195 | 0x0a, 0x00, /* 0x0a Brightness control */ |
| 196 | 0x0b, 0x30, /* 0x0b Miscellaneous control */ |
| 197 | 0x0c, 0xd8, /* 0x0c Luma Gain lsb */ |
| 198 | 0x0d, 0xfe, /* 0x0d Chroma Gain (U) lsb */ |
| 199 | 0x0e, 0xb4, /* 0x0e Chroma Gain (V) msb */ |
| 200 | 0x0f, 0x00, /* 0x0f Hue control */ |
| 201 | 0x12, 0x04, /* 0x12 Output Format */ |
| 202 | 0x13, 0x20, /* 0x13 Vertial Scaling msb 0x00 |
| 203 | chroma comb OFF, line drop scaling, interlace scaling |
| 204 | BUG? Why does turning the chroma comb on fuck up color? |
| 205 | Bug in the bt819 stepping on my board? |
| 206 | */ |
| 207 | 0x14, 0x00, /* 0x14 Vertial Scaling lsb */ |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 208 | 0x16, 0x07, /* 0x16 Video Timing Polarity |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | ACTIVE=active low |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 210 | FIELD: high=odd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | vreset=active high, |
| 212 | hreset=active high */ |
| 213 | 0x18, 0x68, /* 0x18 AGC Delay */ |
| 214 | 0x19, 0x5d, /* 0x19 Burst Gate Delay */ |
| 215 | 0x1a, 0x80, /* 0x1a ADC Interface */ |
| 216 | }; |
| 217 | |
| 218 | struct timing *timing = &timing_data[decoder->norm]; |
| 219 | |
| 220 | init[0x03 * 2 - 1] = |
| 221 | (((timing->vdelay >> 8) & 0x03) << 6) | (((timing-> |
| 222 | vactive >> 8) & |
| 223 | 0x03) << 4) | |
| 224 | (((timing->hdelay >> 8) & 0x03) << 2) | ((timing-> |
| 225 | hactive >> 8) & |
| 226 | 0x03); |
| 227 | init[0x04 * 2 - 1] = timing->vdelay & 0xff; |
| 228 | init[0x05 * 2 - 1] = timing->vactive & 0xff; |
| 229 | init[0x06 * 2 - 1] = timing->hdelay & 0xff; |
| 230 | init[0x07 * 2 - 1] = timing->hactive & 0xff; |
| 231 | init[0x08 * 2 - 1] = timing->hscale >> 8; |
| 232 | init[0x09 * 2 - 1] = timing->hscale & 0xff; |
| 233 | /* 0x15 in array is address 0x19 */ |
| 234 | init[0x15 * 2 - 1] = (decoder->norm == 0) ? 115 : 93; /* Chroma burst delay */ |
| 235 | /* reset */ |
| 236 | bt819_write(client, 0x1f, 0x00); |
| 237 | mdelay(1); |
| 238 | |
| 239 | /* init */ |
| 240 | return bt819_write_block(client, init, sizeof(init)); |
| 241 | |
| 242 | } |
| 243 | |
| 244 | /* ----------------------------------------------------------------------- */ |
| 245 | |
| 246 | static int |
| 247 | bt819_command (struct i2c_client *client, |
| 248 | unsigned int cmd, |
| 249 | void *arg) |
| 250 | { |
| 251 | int temp; |
| 252 | |
| 253 | struct bt819 *decoder = i2c_get_clientdata(client); |
| 254 | |
| 255 | if (!decoder->initialized) { // First call to bt819_init could be |
| 256 | bt819_init(client); // without #FRST = 0 |
| 257 | decoder->initialized = 1; |
| 258 | } |
| 259 | |
| 260 | switch (cmd) { |
| 261 | |
| 262 | case 0: |
| 263 | /* This is just for testing!!! */ |
| 264 | bt819_init(client); |
| 265 | break; |
| 266 | |
| 267 | case DECODER_GET_CAPABILITIES: |
| 268 | { |
| 269 | struct video_decoder_capability *cap = arg; |
| 270 | |
| 271 | cap->flags = VIDEO_DECODER_PAL | |
| 272 | VIDEO_DECODER_NTSC | |
| 273 | VIDEO_DECODER_AUTO | |
| 274 | VIDEO_DECODER_CCIR; |
| 275 | cap->inputs = 8; |
| 276 | cap->outputs = 1; |
| 277 | } |
| 278 | break; |
| 279 | |
| 280 | case DECODER_GET_STATUS: |
| 281 | { |
| 282 | int *iarg = arg; |
| 283 | int status; |
| 284 | int res; |
| 285 | |
| 286 | status = bt819_read(client, 0x00); |
| 287 | res = 0; |
| 288 | if ((status & 0x80)) { |
| 289 | res |= DECODER_STATUS_GOOD; |
| 290 | } |
| 291 | switch (decoder->norm) { |
| 292 | case VIDEO_MODE_NTSC: |
| 293 | res |= DECODER_STATUS_NTSC; |
| 294 | break; |
| 295 | case VIDEO_MODE_PAL: |
| 296 | res |= DECODER_STATUS_PAL; |
| 297 | break; |
| 298 | default: |
| 299 | case VIDEO_MODE_AUTO: |
| 300 | if ((status & 0x10)) { |
| 301 | res |= DECODER_STATUS_PAL; |
| 302 | } else { |
| 303 | res |= DECODER_STATUS_NTSC; |
| 304 | } |
| 305 | break; |
| 306 | } |
| 307 | res |= DECODER_STATUS_COLOR; |
| 308 | *iarg = res; |
| 309 | |
| 310 | dprintk(1, KERN_INFO "%s: get status %x\n", I2C_NAME(client), |
| 311 | *iarg); |
| 312 | } |
| 313 | break; |
| 314 | |
| 315 | case DECODER_SET_NORM: |
| 316 | { |
| 317 | int *iarg = arg; |
| 318 | struct timing *timing = NULL; |
| 319 | |
| 320 | dprintk(1, KERN_INFO "%s: set norm %x\n", I2C_NAME(client), |
| 321 | *iarg); |
| 322 | |
| 323 | switch (*iarg) { |
| 324 | case VIDEO_MODE_NTSC: |
| 325 | bt819_setbit(client, 0x01, 0, 1); |
| 326 | bt819_setbit(client, 0x01, 1, 0); |
| 327 | bt819_setbit(client, 0x01, 5, 0); |
| 328 | bt819_write(client, 0x18, 0x68); |
| 329 | bt819_write(client, 0x19, 0x5d); |
| 330 | //bt819_setbit(client, 0x1a, 5, 1); |
| 331 | timing = &timing_data[VIDEO_MODE_NTSC]; |
| 332 | break; |
| 333 | case VIDEO_MODE_PAL: |
| 334 | bt819_setbit(client, 0x01, 0, 1); |
| 335 | bt819_setbit(client, 0x01, 1, 1); |
| 336 | bt819_setbit(client, 0x01, 5, 1); |
| 337 | bt819_write(client, 0x18, 0x7f); |
| 338 | bt819_write(client, 0x19, 0x72); |
| 339 | //bt819_setbit(client, 0x1a, 5, 0); |
| 340 | timing = &timing_data[VIDEO_MODE_PAL]; |
| 341 | break; |
| 342 | case VIDEO_MODE_AUTO: |
| 343 | bt819_setbit(client, 0x01, 0, 0); |
| 344 | bt819_setbit(client, 0x01, 1, 0); |
| 345 | break; |
| 346 | default: |
| 347 | dprintk(1, |
| 348 | KERN_ERR |
| 349 | "%s: unsupported norm %d\n", |
| 350 | I2C_NAME(client), *iarg); |
| 351 | return -EINVAL; |
| 352 | } |
| 353 | |
| 354 | if (timing) { |
| 355 | bt819_write(client, 0x03, |
| 356 | (((timing->vdelay >> 8) & 0x03) << 6) | |
| 357 | (((timing->vactive >> 8) & 0x03) << 4) | |
| 358 | (((timing->hdelay >> 8) & 0x03) << 2) | |
| 359 | ((timing->hactive >> 8) & 0x03) ); |
| 360 | bt819_write(client, 0x04, timing->vdelay & 0xff); |
| 361 | bt819_write(client, 0x05, timing->vactive & 0xff); |
| 362 | bt819_write(client, 0x06, timing->hdelay & 0xff); |
| 363 | bt819_write(client, 0x07, timing->hactive & 0xff); |
| 364 | bt819_write(client, 0x08, (timing->hscale >> 8) & 0xff); |
| 365 | bt819_write(client, 0x09, timing->hscale & 0xff); |
| 366 | } |
| 367 | |
| 368 | decoder->norm = *iarg; |
| 369 | } |
| 370 | break; |
| 371 | |
| 372 | case DECODER_SET_INPUT: |
| 373 | { |
| 374 | int *iarg = arg; |
| 375 | |
| 376 | dprintk(1, KERN_INFO "%s: set input %x\n", I2C_NAME(client), |
| 377 | *iarg); |
| 378 | |
| 379 | if (*iarg < 0 || *iarg > 7) { |
| 380 | return -EINVAL; |
| 381 | } |
| 382 | |
| 383 | if (decoder->input != *iarg) { |
| 384 | decoder->input = *iarg; |
| 385 | /* select mode */ |
| 386 | if (decoder->input == 0) { |
| 387 | bt819_setbit(client, 0x0b, 6, 0); |
| 388 | bt819_setbit(client, 0x1a, 1, 1); |
| 389 | } else { |
| 390 | bt819_setbit(client, 0x0b, 6, 1); |
| 391 | bt819_setbit(client, 0x1a, 1, 0); |
| 392 | } |
| 393 | } |
| 394 | } |
| 395 | break; |
| 396 | |
| 397 | case DECODER_SET_OUTPUT: |
| 398 | { |
| 399 | int *iarg = arg; |
| 400 | |
| 401 | dprintk(1, KERN_INFO "%s: set output %x\n", I2C_NAME(client), |
| 402 | *iarg); |
| 403 | |
| 404 | /* not much choice of outputs */ |
| 405 | if (*iarg != 0) { |
| 406 | return -EINVAL; |
| 407 | } |
| 408 | } |
| 409 | break; |
| 410 | |
| 411 | case DECODER_ENABLE_OUTPUT: |
| 412 | { |
| 413 | int *iarg = arg; |
| 414 | int enable = (*iarg != 0); |
| 415 | |
| 416 | dprintk(1, KERN_INFO "%s: enable output %x\n", |
| 417 | I2C_NAME(client), *iarg); |
| 418 | |
| 419 | if (decoder->enable != enable) { |
| 420 | decoder->enable = enable; |
| 421 | |
| 422 | if (decoder->enable) { |
| 423 | bt819_setbit(client, 0x16, 7, 0); |
| 424 | } else { |
| 425 | bt819_setbit(client, 0x16, 7, 1); |
| 426 | } |
| 427 | } |
| 428 | } |
| 429 | break; |
| 430 | |
| 431 | case DECODER_SET_PICTURE: |
| 432 | { |
| 433 | struct video_picture *pic = arg; |
| 434 | |
| 435 | dprintk(1, |
| 436 | KERN_INFO |
| 437 | "%s: set picture brightness %d contrast %d colour %d\n", |
| 438 | I2C_NAME(client), pic->brightness, pic->contrast, |
| 439 | pic->colour); |
| 440 | |
| 441 | |
| 442 | if (decoder->bright != pic->brightness) { |
| 443 | /* We want -128 to 127 we get 0-65535 */ |
| 444 | decoder->bright = pic->brightness; |
| 445 | bt819_write(client, 0x0a, |
| 446 | (decoder->bright >> 8) - 128); |
| 447 | } |
| 448 | |
| 449 | if (decoder->contrast != pic->contrast) { |
| 450 | /* We want 0 to 511 we get 0-65535 */ |
| 451 | decoder->contrast = pic->contrast; |
| 452 | bt819_write(client, 0x0c, |
| 453 | (decoder->contrast >> 7) & 0xff); |
| 454 | bt819_setbit(client, 0x0b, 2, |
| 455 | ((decoder->contrast >> 15) & 0x01)); |
| 456 | } |
| 457 | |
| 458 | if (decoder->sat != pic->colour) { |
| 459 | /* We want 0 to 511 we get 0-65535 */ |
| 460 | decoder->sat = pic->colour; |
| 461 | bt819_write(client, 0x0d, |
| 462 | (decoder->sat >> 7) & 0xff); |
| 463 | bt819_setbit(client, 0x0b, 1, |
| 464 | ((decoder->sat >> 15) & 0x01)); |
| 465 | |
| 466 | temp = (decoder->sat * 201) / 237; |
| 467 | bt819_write(client, 0x0e, (temp >> 7) & 0xff); |
| 468 | bt819_setbit(client, 0x0b, 0, (temp >> 15) & 0x01); |
| 469 | } |
| 470 | |
| 471 | if (decoder->hue != pic->hue) { |
| 472 | /* We want -128 to 127 we get 0-65535 */ |
| 473 | decoder->hue = pic->hue; |
| 474 | bt819_write(client, 0x0f, |
| 475 | 128 - (decoder->hue >> 8)); |
| 476 | } |
| 477 | } |
| 478 | break; |
| 479 | |
| 480 | default: |
| 481 | return -EINVAL; |
| 482 | } |
| 483 | |
| 484 | return 0; |
| 485 | } |
| 486 | |
| 487 | /* ----------------------------------------------------------------------- */ |
| 488 | |
| 489 | /* |
| 490 | * Generic i2c probe |
| 491 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 492 | */ |
| 493 | static unsigned short normal_i2c[] = { |
| 494 | I2C_BT819 >> 1, |
| 495 | I2C_CLIENT_END, |
| 496 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
Jean Delvare | 68cc9d0 | 2005-04-02 20:04:41 +0200 | [diff] [blame] | 498 | static unsigned short ignore = I2C_CLIENT_END; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 499 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | static struct i2c_client_address_data addr_data = { |
| 501 | .normal_i2c = normal_i2c, |
Jean Delvare | 68cc9d0 | 2005-04-02 20:04:41 +0200 | [diff] [blame] | 502 | .probe = &ignore, |
| 503 | .ignore = &ignore, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | }; |
| 505 | |
| 506 | static struct i2c_driver i2c_driver_bt819; |
| 507 | |
| 508 | static int |
| 509 | bt819_detect_client (struct i2c_adapter *adapter, |
| 510 | int address, |
| 511 | int kind) |
| 512 | { |
| 513 | int i, id; |
| 514 | struct bt819 *decoder; |
| 515 | struct i2c_client *client; |
| 516 | |
| 517 | dprintk(1, |
| 518 | KERN_INFO |
| 519 | "saa7111.c: detecting bt819 client on address 0x%x\n", |
| 520 | address << 1); |
| 521 | |
| 522 | /* Check if the adapter supports the needed features */ |
| 523 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 524 | return 0; |
| 525 | |
Panagiotis Issaris | 7408187 | 2006-01-11 19:40:56 -0200 | [diff] [blame] | 526 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | if (client == 0) |
| 528 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | client->addr = address; |
| 530 | client->adapter = adapter; |
| 531 | client->driver = &i2c_driver_bt819; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | |
Panagiotis Issaris | 7408187 | 2006-01-11 19:40:56 -0200 | [diff] [blame] | 533 | decoder = kzalloc(sizeof(struct bt819), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | if (decoder == NULL) { |
| 535 | kfree(client); |
| 536 | return -ENOMEM; |
| 537 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | decoder->norm = VIDEO_MODE_NTSC; |
| 539 | decoder->input = 0; |
| 540 | decoder->enable = 1; |
| 541 | decoder->bright = 32768; |
| 542 | decoder->contrast = 32768; |
| 543 | decoder->hue = 32768; |
| 544 | decoder->sat = 32768; |
| 545 | decoder->initialized = 0; |
| 546 | i2c_set_clientdata(client, decoder); |
| 547 | |
| 548 | id = bt819_read(client, 0x17); |
| 549 | switch (id & 0xf0) { |
| 550 | case 0x70: |
| 551 | strlcpy(I2C_NAME(client), "bt819a", sizeof(I2C_NAME(client))); |
| 552 | break; |
| 553 | case 0x60: |
| 554 | strlcpy(I2C_NAME(client), "bt817a", sizeof(I2C_NAME(client))); |
| 555 | break; |
| 556 | case 0x20: |
| 557 | strlcpy(I2C_NAME(client), "bt815a", sizeof(I2C_NAME(client))); |
| 558 | break; |
| 559 | default: |
| 560 | dprintk(1, |
| 561 | KERN_ERR |
| 562 | "bt819: unknown chip version 0x%x (ver 0x%x)\n", |
| 563 | id & 0xf0, id & 0x0f); |
| 564 | kfree(decoder); |
| 565 | kfree(client); |
| 566 | return 0; |
| 567 | } |
| 568 | |
| 569 | i = i2c_attach_client(client); |
| 570 | if (i) { |
| 571 | kfree(client); |
| 572 | kfree(decoder); |
| 573 | return i; |
| 574 | } |
| 575 | |
| 576 | i = bt819_init(client); |
| 577 | if (i < 0) { |
| 578 | dprintk(1, KERN_ERR "%s_attach: init status %d\n", |
| 579 | I2C_NAME(client), i); |
| 580 | } else { |
| 581 | dprintk(1, |
| 582 | KERN_INFO |
| 583 | "%s_attach: chip version 0x%x at address 0x%x\n", |
| 584 | I2C_NAME(client), id & 0x0f, |
| 585 | client->addr << 1); |
| 586 | } |
| 587 | |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | static int |
| 592 | bt819_attach_adapter (struct i2c_adapter *adapter) |
| 593 | { |
| 594 | return i2c_probe(adapter, &addr_data, &bt819_detect_client); |
| 595 | } |
| 596 | |
| 597 | static int |
| 598 | bt819_detach_client (struct i2c_client *client) |
| 599 | { |
| 600 | struct bt819 *decoder = i2c_get_clientdata(client); |
| 601 | int err; |
| 602 | |
| 603 | err = i2c_detach_client(client); |
| 604 | if (err) { |
| 605 | return err; |
| 606 | } |
| 607 | |
| 608 | kfree(decoder); |
| 609 | kfree(client); |
| 610 | |
| 611 | return 0; |
| 612 | } |
| 613 | |
| 614 | /* ----------------------------------------------------------------------- */ |
| 615 | |
| 616 | static struct i2c_driver i2c_driver_bt819 = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 617 | .driver = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 618 | .name = "bt819", |
| 619 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
| 621 | .id = I2C_DRIVERID_BT819, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | |
| 623 | .attach_adapter = bt819_attach_adapter, |
| 624 | .detach_client = bt819_detach_client, |
| 625 | .command = bt819_command, |
| 626 | }; |
| 627 | |
| 628 | static int __init |
| 629 | bt819_init_module (void) |
| 630 | { |
| 631 | return i2c_add_driver(&i2c_driver_bt819); |
| 632 | } |
| 633 | |
| 634 | static void __exit |
| 635 | bt819_exit (void) |
| 636 | { |
| 637 | i2c_del_driver(&i2c_driver_bt819); |
| 638 | } |
| 639 | |
| 640 | module_init(bt819_init_module); |
| 641 | module_exit(bt819_exit); |