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 | * saa7111 - Philips SAA7111A video decoder driver version 0.0.3 |
| 3 | * |
| 4 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> |
| 5 | * |
| 6 | * Slight changes for video timing and attachment output by |
| 7 | * Wolfgang Scherr <scherr@net4you.net> |
| 8 | * |
| 9 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> |
| 10 | * - moved over to linux>=2.4.x i2c protocol (1/1/2003) |
| 11 | * |
| 12 | * Changes by Michael Hunold <michael@mihu.de> |
| 13 | * - implemented DECODER_SET_GPIO, DECODER_INIT, DECODER_SET_VBI_BYPASS |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify |
| 16 | * it under the terms of the GNU General Public License as published by |
| 17 | * the Free Software Foundation; either version 2 of the License, or |
| 18 | * (at your option) any later version. |
| 19 | * |
| 20 | * This program is distributed in the hope that it will be useful, |
| 21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | * GNU General Public License for more details. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License |
| 26 | * along with this program; if not, write to the Free Software |
| 27 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | */ |
| 29 | |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/init.h> |
| 32 | #include <linux/delay.h> |
| 33 | #include <linux/errno.h> |
| 34 | #include <linux/fs.h> |
| 35 | #include <linux/kernel.h> |
| 36 | #include <linux/major.h> |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/signal.h> |
Mauro Carvalho Chehab | 18f3fa1 | 2007-07-02 15:39:57 -0300 | [diff] [blame] | 40 | #include <linux/types.h> |
| 41 | #include <linux/i2c.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <asm/io.h> |
| 43 | #include <asm/pgtable.h> |
| 44 | #include <asm/page.h> |
Mauro Carvalho Chehab | 18f3fa1 | 2007-07-02 15:39:57 -0300 | [diff] [blame] | 45 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | #include <linux/videodev.h> |
Mauro Carvalho Chehab | 18f3fa1 | 2007-07-02 15:39:57 -0300 | [diff] [blame] | 48 | #include <linux/video_decoder.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | MODULE_DESCRIPTION("Philips SAA7111 video decoder driver"); |
| 51 | MODULE_AUTHOR("Dave Perks"); |
| 52 | MODULE_LICENSE("GPL"); |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
| 55 | #define I2C_NAME(s) (s)->name |
| 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Douglas Schilling Landgraf | ff699e6 | 2008-04-22 14:41:48 -0300 | [diff] [blame^] | 58 | static int debug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | module_param(debug, int, 0644); |
| 60 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); |
| 61 | |
| 62 | #define dprintk(num, format, args...) \ |
| 63 | do { \ |
| 64 | if (debug >= num) \ |
| 65 | printk(format, ##args); \ |
| 66 | } while (0) |
| 67 | |
| 68 | /* ----------------------------------------------------------------------- */ |
| 69 | |
Jean Delvare | 6eb5d9c | 2006-03-22 03:48:32 -0300 | [diff] [blame] | 70 | #define SAA7111_NR_REG 0x18 |
| 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | struct saa7111 { |
Jean Delvare | 6eb5d9c | 2006-03-22 03:48:32 -0300 | [diff] [blame] | 73 | unsigned char reg[SAA7111_NR_REG]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
| 75 | int norm; |
| 76 | int input; |
| 77 | int enable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | }; |
| 79 | |
| 80 | #define I2C_SAA7111 0x48 |
| 81 | |
| 82 | /* ----------------------------------------------------------------------- */ |
| 83 | |
| 84 | static inline int |
| 85 | saa7111_write (struct i2c_client *client, |
| 86 | u8 reg, |
| 87 | u8 value) |
| 88 | { |
| 89 | struct saa7111 *decoder = i2c_get_clientdata(client); |
| 90 | |
| 91 | decoder->reg[reg] = value; |
| 92 | return i2c_smbus_write_byte_data(client, reg, value); |
| 93 | } |
| 94 | |
Russell King | 624fc7f | 2007-05-26 07:55:32 -0300 | [diff] [blame] | 95 | static inline void |
| 96 | saa7111_write_if_changed(struct i2c_client *client, u8 reg, u8 value) |
| 97 | { |
| 98 | struct saa7111 *decoder = i2c_get_clientdata(client); |
| 99 | |
| 100 | if (decoder->reg[reg] != value) { |
| 101 | decoder->reg[reg] = value; |
| 102 | i2c_smbus_write_byte_data(client, reg, value); |
| 103 | } |
| 104 | } |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | static int |
| 107 | saa7111_write_block (struct i2c_client *client, |
| 108 | const u8 *data, |
| 109 | unsigned int len) |
| 110 | { |
| 111 | int ret = -1; |
| 112 | u8 reg; |
| 113 | |
| 114 | /* the saa7111 has an autoincrement function, use it if |
| 115 | * the adapter understands raw I2C */ |
| 116 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| 117 | /* do raw I2C, not smbus compatible */ |
| 118 | struct saa7111 *decoder = i2c_get_clientdata(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | u8 block_data[32]; |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 120 | int block_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | while (len >= 2) { |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 123 | block_len = 0; |
| 124 | block_data[block_len++] = reg = data[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | do { |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 126 | block_data[block_len++] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | decoder->reg[reg++] = data[1]; |
| 128 | len -= 2; |
| 129 | data += 2; |
| 130 | } while (len >= 2 && data[0] == reg && |
Jean Delvare | 9aa45e3 | 2006-03-22 03:48:35 -0300 | [diff] [blame] | 131 | block_len < 32); |
| 132 | if ((ret = i2c_master_send(client, block_data, |
| 133 | block_len)) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | break; |
| 135 | } |
| 136 | } else { |
| 137 | /* do some slow I2C emulation kind of thing */ |
| 138 | while (len >= 2) { |
| 139 | reg = *data++; |
| 140 | if ((ret = saa7111_write(client, reg, |
| 141 | *data++)) < 0) |
| 142 | break; |
| 143 | len -= 2; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | return ret; |
| 148 | } |
| 149 | |
| 150 | static int |
| 151 | saa7111_init_decoder (struct i2c_client *client, |
| 152 | struct video_decoder_init *init) |
| 153 | { |
| 154 | return saa7111_write_block(client, init->data, init->len); |
| 155 | } |
| 156 | |
| 157 | static inline int |
| 158 | saa7111_read (struct i2c_client *client, |
| 159 | u8 reg) |
| 160 | { |
| 161 | return i2c_smbus_read_byte_data(client, reg); |
| 162 | } |
| 163 | |
| 164 | /* ----------------------------------------------------------------------- */ |
| 165 | |
| 166 | static const unsigned char saa7111_i2c_init[] = { |
| 167 | 0x00, 0x00, /* 00 - ID byte */ |
| 168 | 0x01, 0x00, /* 01 - reserved */ |
| 169 | |
| 170 | /*front end */ |
| 171 | 0x02, 0xd0, /* 02 - FUSE=3, GUDL=2, MODE=0 */ |
| 172 | 0x03, 0x23, /* 03 - HLNRS=0, VBSL=1, WPOFF=0, |
| 173 | * HOLDG=0, GAFIX=0, GAI1=256, GAI2=256 */ |
| 174 | 0x04, 0x00, /* 04 - GAI1=256 */ |
| 175 | 0x05, 0x00, /* 05 - GAI2=256 */ |
| 176 | |
| 177 | /* decoder */ |
| 178 | 0x06, 0xf3, /* 06 - HSB at 13(50Hz) / 17(60Hz) |
| 179 | * pixels after end of last line */ |
| 180 | /*0x07, 0x13, * 07 - HSS at 113(50Hz) / 117(60Hz) pixels |
| 181 | * after end of last line */ |
| 182 | 0x07, 0xe8, /* 07 - HSS seems to be needed to |
| 183 | * work with NTSC, too */ |
| 184 | 0x08, 0xc8, /* 08 - AUFD=1, FSEL=1, EXFIL=0, |
| 185 | * VTRC=1, HPLL=0, VNOI=0 */ |
| 186 | 0x09, 0x01, /* 09 - BYPS=0, PREF=0, BPSS=0, |
| 187 | * VBLB=0, UPTCV=0, APER=1 */ |
| 188 | 0x0a, 0x80, /* 0a - BRIG=128 */ |
| 189 | 0x0b, 0x47, /* 0b - CONT=1.109 */ |
| 190 | 0x0c, 0x40, /* 0c - SATN=1.0 */ |
| 191 | 0x0d, 0x00, /* 0d - HUE=0 */ |
| 192 | 0x0e, 0x01, /* 0e - CDTO=0, CSTD=0, DCCF=0, |
| 193 | * FCTC=0, CHBW=1 */ |
| 194 | 0x0f, 0x00, /* 0f - reserved */ |
| 195 | 0x10, 0x48, /* 10 - OFTS=1, HDEL=0, VRLN=1, YDEL=0 */ |
| 196 | 0x11, 0x1c, /* 11 - GPSW=0, CM99=0, FECO=0, COMPO=1, |
| 197 | * OEYC=1, OEHV=1, VIPB=0, COLO=0 */ |
| 198 | 0x12, 0x00, /* 12 - output control 2 */ |
| 199 | 0x13, 0x00, /* 13 - output control 3 */ |
| 200 | 0x14, 0x00, /* 14 - reserved */ |
| 201 | 0x15, 0x00, /* 15 - VBI */ |
| 202 | 0x16, 0x00, /* 16 - VBI */ |
| 203 | 0x17, 0x00, /* 17 - VBI */ |
| 204 | }; |
| 205 | |
| 206 | static int |
| 207 | saa7111_command (struct i2c_client *client, |
| 208 | unsigned int cmd, |
| 209 | void *arg) |
| 210 | { |
| 211 | struct saa7111 *decoder = i2c_get_clientdata(client); |
| 212 | |
| 213 | switch (cmd) { |
| 214 | |
| 215 | case 0: |
Martin Samuelsson | 58a0b84 | 2006-03-22 03:48:38 -0300 | [diff] [blame] | 216 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | case DECODER_INIT: |
| 218 | { |
| 219 | struct video_decoder_init *init = arg; |
| 220 | if (NULL != init) |
| 221 | return saa7111_init_decoder(client, init); |
| 222 | else { |
| 223 | struct video_decoder_init vdi; |
| 224 | vdi.data = saa7111_i2c_init; |
| 225 | vdi.len = sizeof(saa7111_i2c_init); |
| 226 | return saa7111_init_decoder(client, &vdi); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | case DECODER_DUMP: |
| 231 | { |
| 232 | int i; |
| 233 | |
Jean Delvare | 6eb5d9c | 2006-03-22 03:48:32 -0300 | [diff] [blame] | 234 | for (i = 0; i < SAA7111_NR_REG; i += 16) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | int j; |
| 236 | |
| 237 | printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i); |
Jean Delvare | 6eb5d9c | 2006-03-22 03:48:32 -0300 | [diff] [blame] | 238 | for (j = 0; j < 16 && i + j < SAA7111_NR_REG; ++j) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | printk(" %02x", |
| 240 | saa7111_read(client, i + j)); |
| 241 | } |
| 242 | printk("\n"); |
| 243 | } |
| 244 | } |
| 245 | break; |
| 246 | |
| 247 | case DECODER_GET_CAPABILITIES: |
| 248 | { |
| 249 | struct video_decoder_capability *cap = arg; |
| 250 | |
| 251 | cap->flags = VIDEO_DECODER_PAL | |
| 252 | VIDEO_DECODER_NTSC | |
| 253 | VIDEO_DECODER_SECAM | |
| 254 | VIDEO_DECODER_AUTO | |
| 255 | VIDEO_DECODER_CCIR; |
| 256 | cap->inputs = 8; |
| 257 | cap->outputs = 1; |
| 258 | } |
| 259 | break; |
| 260 | |
| 261 | case DECODER_GET_STATUS: |
| 262 | { |
| 263 | int *iarg = arg; |
| 264 | int status; |
| 265 | int res; |
| 266 | |
| 267 | status = saa7111_read(client, 0x1f); |
| 268 | dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client), |
| 269 | status); |
| 270 | res = 0; |
| 271 | if ((status & (1 << 6)) == 0) { |
| 272 | res |= DECODER_STATUS_GOOD; |
| 273 | } |
| 274 | switch (decoder->norm) { |
| 275 | case VIDEO_MODE_NTSC: |
| 276 | res |= DECODER_STATUS_NTSC; |
| 277 | break; |
| 278 | case VIDEO_MODE_PAL: |
| 279 | res |= DECODER_STATUS_PAL; |
| 280 | break; |
| 281 | case VIDEO_MODE_SECAM: |
| 282 | res |= DECODER_STATUS_SECAM; |
| 283 | break; |
| 284 | default: |
| 285 | case VIDEO_MODE_AUTO: |
| 286 | if ((status & (1 << 5)) != 0) { |
| 287 | res |= DECODER_STATUS_NTSC; |
| 288 | } else { |
| 289 | res |= DECODER_STATUS_PAL; |
| 290 | } |
| 291 | break; |
| 292 | } |
| 293 | if ((status & (1 << 0)) != 0) { |
| 294 | res |= DECODER_STATUS_COLOR; |
| 295 | } |
| 296 | *iarg = res; |
| 297 | } |
| 298 | break; |
| 299 | |
| 300 | case DECODER_SET_GPIO: |
| 301 | { |
| 302 | int *iarg = arg; |
| 303 | if (0 != *iarg) { |
| 304 | saa7111_write(client, 0x11, |
| 305 | (decoder->reg[0x11] | 0x80)); |
| 306 | } else { |
| 307 | saa7111_write(client, 0x11, |
| 308 | (decoder->reg[0x11] & 0x7f)); |
| 309 | } |
| 310 | break; |
| 311 | } |
| 312 | |
| 313 | case DECODER_SET_VBI_BYPASS: |
| 314 | { |
| 315 | int *iarg = arg; |
| 316 | if (0 != *iarg) { |
| 317 | saa7111_write(client, 0x13, |
| 318 | (decoder->reg[0x13] & 0xf0) | 0x0a); |
| 319 | } else { |
| 320 | saa7111_write(client, 0x13, |
| 321 | (decoder->reg[0x13] & 0xf0)); |
| 322 | } |
| 323 | break; |
| 324 | } |
| 325 | |
| 326 | case DECODER_SET_NORM: |
| 327 | { |
| 328 | int *iarg = arg; |
| 329 | |
| 330 | switch (*iarg) { |
| 331 | |
| 332 | case VIDEO_MODE_NTSC: |
| 333 | saa7111_write(client, 0x08, |
| 334 | (decoder->reg[0x08] & 0x3f) | 0x40); |
| 335 | saa7111_write(client, 0x0e, |
| 336 | (decoder->reg[0x0e] & 0x8f)); |
| 337 | break; |
| 338 | |
| 339 | case VIDEO_MODE_PAL: |
| 340 | saa7111_write(client, 0x08, |
| 341 | (decoder->reg[0x08] & 0x3f) | 0x00); |
| 342 | saa7111_write(client, 0x0e, |
| 343 | (decoder->reg[0x0e] & 0x8f)); |
| 344 | break; |
| 345 | |
| 346 | case VIDEO_MODE_SECAM: |
| 347 | saa7111_write(client, 0x08, |
| 348 | (decoder->reg[0x08] & 0x3f) | 0x00); |
| 349 | saa7111_write(client, 0x0e, |
| 350 | (decoder->reg[0x0e] & 0x8f) | 0x50); |
| 351 | break; |
| 352 | |
| 353 | case VIDEO_MODE_AUTO: |
| 354 | saa7111_write(client, 0x08, |
| 355 | (decoder->reg[0x08] & 0x3f) | 0x80); |
| 356 | saa7111_write(client, 0x0e, |
| 357 | (decoder->reg[0x0e] & 0x8f)); |
| 358 | break; |
| 359 | |
| 360 | default: |
| 361 | return -EINVAL; |
| 362 | |
| 363 | } |
| 364 | decoder->norm = *iarg; |
| 365 | } |
| 366 | break; |
| 367 | |
| 368 | case DECODER_SET_INPUT: |
| 369 | { |
| 370 | int *iarg = arg; |
| 371 | |
| 372 | if (*iarg < 0 || *iarg > 7) { |
| 373 | return -EINVAL; |
| 374 | } |
| 375 | |
| 376 | if (decoder->input != *iarg) { |
| 377 | decoder->input = *iarg; |
| 378 | /* select mode */ |
| 379 | saa7111_write(client, 0x02, |
| 380 | (decoder-> |
| 381 | reg[0x02] & 0xf8) | decoder->input); |
| 382 | /* bypass chrominance trap for modes 4..7 */ |
| 383 | saa7111_write(client, 0x09, |
| 384 | (decoder-> |
| 385 | reg[0x09] & 0x7f) | ((decoder-> |
| 386 | input > |
| 387 | 3) ? 0x80 : |
| 388 | 0)); |
| 389 | } |
| 390 | } |
| 391 | break; |
| 392 | |
| 393 | case DECODER_SET_OUTPUT: |
| 394 | { |
| 395 | int *iarg = arg; |
| 396 | |
| 397 | /* not much choice of outputs */ |
| 398 | if (*iarg != 0) { |
| 399 | return -EINVAL; |
| 400 | } |
| 401 | } |
| 402 | break; |
| 403 | |
| 404 | case DECODER_ENABLE_OUTPUT: |
| 405 | { |
| 406 | int *iarg = arg; |
| 407 | int enable = (*iarg != 0); |
| 408 | |
| 409 | if (decoder->enable != enable) { |
| 410 | decoder->enable = enable; |
| 411 | |
| 412 | /* RJ: If output should be disabled (for |
| 413 | * playing videos), we also need a open PLL. |
| 414 | * The input is set to 0 (where no input |
| 415 | * source is connected), although this |
| 416 | * is not necessary. |
| 417 | * |
| 418 | * If output should be enabled, we have to |
| 419 | * reverse the above. |
| 420 | */ |
| 421 | |
| 422 | if (decoder->enable) { |
| 423 | saa7111_write(client, 0x02, |
| 424 | (decoder-> |
| 425 | reg[0x02] & 0xf8) | |
| 426 | decoder->input); |
| 427 | saa7111_write(client, 0x08, |
| 428 | (decoder->reg[0x08] & 0xfb)); |
| 429 | saa7111_write(client, 0x11, |
| 430 | (decoder-> |
| 431 | reg[0x11] & 0xf3) | 0x0c); |
| 432 | } else { |
| 433 | saa7111_write(client, 0x02, |
| 434 | (decoder->reg[0x02] & 0xf8)); |
| 435 | saa7111_write(client, 0x08, |
| 436 | (decoder-> |
| 437 | reg[0x08] & 0xfb) | 0x04); |
| 438 | saa7111_write(client, 0x11, |
| 439 | (decoder->reg[0x11] & 0xf3)); |
| 440 | } |
| 441 | } |
| 442 | } |
| 443 | break; |
| 444 | |
| 445 | case DECODER_SET_PICTURE: |
| 446 | { |
| 447 | struct video_picture *pic = arg; |
| 448 | |
Russell King | 624fc7f | 2007-05-26 07:55:32 -0300 | [diff] [blame] | 449 | /* We want 0 to 255 we get 0-65535 */ |
| 450 | saa7111_write_if_changed(client, 0x0a, pic->brightness >> 8); |
| 451 | /* We want 0 to 127 we get 0-65535 */ |
| 452 | saa7111_write(client, 0x0b, pic->contrast >> 9); |
| 453 | /* We want 0 to 127 we get 0-65535 */ |
| 454 | saa7111_write(client, 0x0c, pic->colour >> 9); |
| 455 | /* We want -128 to 127 we get 0-65535 */ |
| 456 | saa7111_write(client, 0x0d, (pic->hue - 32768) >> 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | } |
| 458 | break; |
| 459 | |
| 460 | default: |
| 461 | return -EINVAL; |
| 462 | } |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | /* ----------------------------------------------------------------------- */ |
| 468 | |
| 469 | /* |
| 470 | * Generic i2c probe |
| 471 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 472 | */ |
| 473 | static unsigned short normal_i2c[] = { I2C_SAA7111 >> 1, I2C_CLIENT_END }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | |
Jean Delvare | 68cc9d0 | 2005-04-02 20:04:41 +0200 | [diff] [blame] | 475 | static unsigned short ignore = I2C_CLIENT_END; |
Mauro Carvalho Chehab | d56410e | 2006-03-25 09:19:53 -0300 | [diff] [blame] | 476 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | static struct i2c_client_address_data addr_data = { |
| 478 | .normal_i2c = normal_i2c, |
Jean Delvare | 68cc9d0 | 2005-04-02 20:04:41 +0200 | [diff] [blame] | 479 | .probe = &ignore, |
| 480 | .ignore = &ignore, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | }; |
| 482 | |
| 483 | static struct i2c_driver i2c_driver_saa7111; |
| 484 | |
| 485 | static int |
| 486 | saa7111_detect_client (struct i2c_adapter *adapter, |
| 487 | int address, |
| 488 | int kind) |
| 489 | { |
| 490 | int i; |
| 491 | struct i2c_client *client; |
| 492 | struct saa7111 *decoder; |
| 493 | struct video_decoder_init vdi; |
| 494 | |
| 495 | dprintk(1, |
| 496 | KERN_INFO |
| 497 | "saa7111.c: detecting saa7111 client on address 0x%x\n", |
| 498 | address << 1); |
| 499 | |
| 500 | /* Check if the adapter supports the needed features */ |
| 501 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 502 | return 0; |
| 503 | |
Panagiotis Issaris | 7408187 | 2006-01-11 19:40:56 -0200 | [diff] [blame] | 504 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
Al Viro | 5fa1247 | 2008-03-29 03:07:38 +0000 | [diff] [blame] | 505 | if (!client) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | client->addr = address; |
| 508 | client->adapter = adapter; |
| 509 | client->driver = &i2c_driver_saa7111; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client))); |
| 511 | |
Panagiotis Issaris | 7408187 | 2006-01-11 19:40:56 -0200 | [diff] [blame] | 512 | decoder = kzalloc(sizeof(struct saa7111), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | if (decoder == NULL) { |
| 514 | kfree(client); |
| 515 | return -ENOMEM; |
| 516 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | decoder->norm = VIDEO_MODE_NTSC; |
| 518 | decoder->input = 0; |
| 519 | decoder->enable = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | i2c_set_clientdata(client, decoder); |
| 521 | |
| 522 | i = i2c_attach_client(client); |
| 523 | if (i) { |
| 524 | kfree(client); |
| 525 | kfree(decoder); |
| 526 | return i; |
| 527 | } |
| 528 | |
| 529 | vdi.data = saa7111_i2c_init; |
| 530 | vdi.len = sizeof(saa7111_i2c_init); |
| 531 | i = saa7111_init_decoder(client, &vdi); |
| 532 | if (i < 0) { |
| 533 | dprintk(1, KERN_ERR "%s_attach error: init status %d\n", |
| 534 | I2C_NAME(client), i); |
| 535 | } else { |
| 536 | dprintk(1, |
| 537 | KERN_INFO |
| 538 | "%s_attach: chip version %x at address 0x%x\n", |
| 539 | I2C_NAME(client), saa7111_read(client, 0x00) >> 4, |
| 540 | client->addr << 1); |
| 541 | } |
| 542 | |
| 543 | return 0; |
| 544 | } |
| 545 | |
| 546 | static int |
| 547 | saa7111_attach_adapter (struct i2c_adapter *adapter) |
| 548 | { |
| 549 | dprintk(1, |
| 550 | KERN_INFO |
| 551 | "saa7111.c: starting probe for adapter %s (0x%x)\n", |
| 552 | I2C_NAME(adapter), adapter->id); |
| 553 | return i2c_probe(adapter, &addr_data, &saa7111_detect_client); |
| 554 | } |
| 555 | |
| 556 | static int |
| 557 | saa7111_detach_client (struct i2c_client *client) |
| 558 | { |
| 559 | struct saa7111 *decoder = i2c_get_clientdata(client); |
| 560 | int err; |
| 561 | |
| 562 | err = i2c_detach_client(client); |
| 563 | if (err) { |
| 564 | return err; |
| 565 | } |
| 566 | |
| 567 | kfree(decoder); |
| 568 | kfree(client); |
| 569 | |
| 570 | return 0; |
| 571 | } |
| 572 | |
| 573 | /* ----------------------------------------------------------------------- */ |
| 574 | |
| 575 | static struct i2c_driver i2c_driver_saa7111 = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 576 | .driver = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame] | 577 | .name = "saa7111", |
| 578 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
| 580 | .id = I2C_DRIVERID_SAA7111A, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | |
| 582 | .attach_adapter = saa7111_attach_adapter, |
| 583 | .detach_client = saa7111_detach_client, |
| 584 | .command = saa7111_command, |
| 585 | }; |
| 586 | |
| 587 | static int __init |
| 588 | saa7111_init (void) |
| 589 | { |
| 590 | return i2c_add_driver(&i2c_driver_saa7111); |
| 591 | } |
| 592 | |
| 593 | static void __exit |
| 594 | saa7111_exit (void) |
| 595 | { |
| 596 | i2c_del_driver(&i2c_driver_saa7111); |
| 597 | } |
| 598 | |
| 599 | module_init(saa7111_init); |
| 600 | module_exit(saa7111_exit); |