Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * adv7170 - adv7170, adv7171 video encoder driver version 0.0.1 |
| 3 | * |
| 4 | * Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com> |
| 5 | * |
| 6 | * Based on adv7176 driver by: |
| 7 | * |
| 8 | * Copyright (C) 1998 Dave Perks <dperks@ibm.net> |
| 9 | * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net> |
| 10 | * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx> |
| 11 | * - some corrections for Pinnacle Systems Inc. DC10plus card. |
| 12 | * |
| 13 | * Changes by Ronald Bultje <rbultje@ronald.bitfreak.net> |
| 14 | * - moved over to linux>=2.4.x i2c protocol (1/1/2003) |
| 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> |
| 45 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <linux/types.h> |
| 47 | |
| 48 | #include <linux/videodev.h> |
| 49 | #include <asm/uaccess.h> |
| 50 | |
| 51 | MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver"); |
| 52 | MODULE_AUTHOR("Maxim Yevtyushkin"); |
| 53 | MODULE_LICENSE("GPL"); |
| 54 | |
| 55 | #include <linux/i2c.h> |
| 56 | #include <linux/i2c-dev.h> |
| 57 | |
| 58 | #define I2C_NAME(x) (x)->name |
| 59 | |
| 60 | #include <linux/video_encoder.h> |
| 61 | |
| 62 | static int debug = 0; |
| 63 | module_param(debug, int, 0); |
| 64 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); |
| 65 | |
| 66 | #define dprintk(num, format, args...) \ |
| 67 | do { \ |
| 68 | if (debug >= num) \ |
| 69 | printk(format, ##args); \ |
| 70 | } while (0) |
| 71 | |
| 72 | /* ----------------------------------------------------------------------- */ |
| 73 | |
| 74 | struct adv7170 { |
| 75 | unsigned char reg[128]; |
| 76 | |
| 77 | int norm; |
| 78 | int input; |
| 79 | int enable; |
| 80 | int bright; |
| 81 | int contrast; |
| 82 | int hue; |
| 83 | int sat; |
| 84 | }; |
| 85 | |
| 86 | #define I2C_ADV7170 0xd4 |
| 87 | #define I2C_ADV7171 0x54 |
| 88 | |
| 89 | static char adv7170_name[] = "adv7170"; |
| 90 | static char adv7171_name[] = "adv7171"; |
| 91 | |
| 92 | static char *inputs[] = { "pass_through", "play_back" }; |
| 93 | static char *norms[] = { "PAL", "NTSC" }; |
| 94 | |
| 95 | /* ----------------------------------------------------------------------- */ |
| 96 | |
| 97 | static inline int |
| 98 | adv7170_write (struct i2c_client *client, |
| 99 | u8 reg, |
| 100 | u8 value) |
| 101 | { |
| 102 | struct adv7170 *encoder = i2c_get_clientdata(client); |
| 103 | |
| 104 | encoder->reg[reg] = value; |
| 105 | return i2c_smbus_write_byte_data(client, reg, value); |
| 106 | } |
| 107 | |
| 108 | static inline int |
| 109 | adv7170_read (struct i2c_client *client, |
| 110 | u8 reg) |
| 111 | { |
| 112 | return i2c_smbus_read_byte_data(client, reg); |
| 113 | } |
| 114 | |
| 115 | static int |
| 116 | adv7170_write_block (struct i2c_client *client, |
| 117 | const u8 *data, |
| 118 | unsigned int len) |
| 119 | { |
| 120 | int ret = -1; |
| 121 | u8 reg; |
| 122 | |
| 123 | /* the adv7170 has an autoincrement function, use it if |
| 124 | * the adapter understands raw I2C */ |
| 125 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| 126 | /* do raw I2C, not smbus compatible */ |
| 127 | struct adv7170 *encoder = i2c_get_clientdata(client); |
| 128 | struct i2c_msg msg; |
| 129 | u8 block_data[32]; |
| 130 | |
| 131 | msg.addr = client->addr; |
| 132 | msg.flags = 0; |
| 133 | while (len >= 2) { |
| 134 | msg.buf = (char *) block_data; |
| 135 | msg.len = 0; |
| 136 | block_data[msg.len++] = reg = data[0]; |
| 137 | do { |
| 138 | block_data[msg.len++] = |
| 139 | encoder->reg[reg++] = data[1]; |
| 140 | len -= 2; |
| 141 | data += 2; |
| 142 | } while (len >= 2 && data[0] == reg && |
| 143 | msg.len < 32); |
| 144 | if ((ret = i2c_transfer(client->adapter, |
| 145 | &msg, 1)) < 0) |
| 146 | break; |
| 147 | } |
| 148 | } else { |
| 149 | /* do some slow I2C emulation kind of thing */ |
| 150 | while (len >= 2) { |
| 151 | reg = *data++; |
| 152 | if ((ret = adv7170_write(client, reg, |
| 153 | *data++)) < 0) |
| 154 | break; |
| 155 | len -= 2; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | return ret; |
| 160 | } |
| 161 | |
| 162 | /* ----------------------------------------------------------------------- */ |
| 163 | // Output filter: S-Video Composite |
| 164 | |
| 165 | #define MR050 0x11 //0x09 |
| 166 | #define MR060 0x14 //0x0c |
| 167 | |
| 168 | //--------------------------------------------------------------------------- |
| 169 | |
| 170 | #define TR0MODE 0x4c |
| 171 | #define TR0RST 0x80 |
| 172 | |
| 173 | #define TR1CAPT 0x00 |
| 174 | #define TR1PLAY 0x00 |
| 175 | |
| 176 | |
| 177 | static const unsigned char init_NTSC[] = { |
| 178 | 0x00, 0x10, // MR0 |
| 179 | 0x01, 0x20, // MR1 |
| 180 | 0x02, 0x0e, // MR2 RTC control: bits 2 and 1 |
| 181 | 0x03, 0x80, // MR3 |
| 182 | 0x04, 0x30, // MR4 |
| 183 | 0x05, 0x00, // Reserved |
| 184 | 0x06, 0x00, // Reserved |
| 185 | 0x07, TR0MODE, // TM0 |
| 186 | 0x08, TR1CAPT, // TM1 |
| 187 | 0x09, 0x16, // Fsc0 |
| 188 | 0x0a, 0x7c, // Fsc1 |
| 189 | 0x0b, 0xf0, // Fsc2 |
| 190 | 0x0c, 0x21, // Fsc3 |
| 191 | 0x0d, 0x00, // Subcarrier Phase |
| 192 | 0x0e, 0x00, // Closed Capt. Ext 0 |
| 193 | 0x0f, 0x00, // Closed Capt. Ext 1 |
| 194 | 0x10, 0x00, // Closed Capt. 0 |
| 195 | 0x11, 0x00, // Closed Capt. 1 |
| 196 | 0x12, 0x00, // Pedestal Ctl 0 |
| 197 | 0x13, 0x00, // Pedestal Ctl 1 |
| 198 | 0x14, 0x00, // Pedestal Ctl 2 |
| 199 | 0x15, 0x00, // Pedestal Ctl 3 |
| 200 | 0x16, 0x00, // CGMS_WSS_0 |
| 201 | 0x17, 0x00, // CGMS_WSS_1 |
| 202 | 0x18, 0x00, // CGMS_WSS_2 |
| 203 | 0x19, 0x00, // Teletext Ctl |
| 204 | }; |
| 205 | |
| 206 | static const unsigned char init_PAL[] = { |
| 207 | 0x00, 0x71, // MR0 |
| 208 | 0x01, 0x20, // MR1 |
| 209 | 0x02, 0x0e, // MR2 RTC control: bits 2 and 1 |
| 210 | 0x03, 0x80, // MR3 |
| 211 | 0x04, 0x30, // MR4 |
| 212 | 0x05, 0x00, // Reserved |
| 213 | 0x06, 0x00, // Reserved |
| 214 | 0x07, TR0MODE, // TM0 |
| 215 | 0x08, TR1CAPT, // TM1 |
| 216 | 0x09, 0xcb, // Fsc0 |
| 217 | 0x0a, 0x8a, // Fsc1 |
| 218 | 0x0b, 0x09, // Fsc2 |
| 219 | 0x0c, 0x2a, // Fsc3 |
| 220 | 0x0d, 0x00, // Subcarrier Phase |
| 221 | 0x0e, 0x00, // Closed Capt. Ext 0 |
| 222 | 0x0f, 0x00, // Closed Capt. Ext 1 |
| 223 | 0x10, 0x00, // Closed Capt. 0 |
| 224 | 0x11, 0x00, // Closed Capt. 1 |
| 225 | 0x12, 0x00, // Pedestal Ctl 0 |
| 226 | 0x13, 0x00, // Pedestal Ctl 1 |
| 227 | 0x14, 0x00, // Pedestal Ctl 2 |
| 228 | 0x15, 0x00, // Pedestal Ctl 3 |
| 229 | 0x16, 0x00, // CGMS_WSS_0 |
| 230 | 0x17, 0x00, // CGMS_WSS_1 |
| 231 | 0x18, 0x00, // CGMS_WSS_2 |
| 232 | 0x19, 0x00, // Teletext Ctl |
| 233 | }; |
| 234 | |
| 235 | |
| 236 | static int |
| 237 | adv7170_command (struct i2c_client *client, |
| 238 | unsigned int cmd, |
| 239 | void * arg) |
| 240 | { |
| 241 | struct adv7170 *encoder = i2c_get_clientdata(client); |
| 242 | |
| 243 | switch (cmd) { |
| 244 | |
| 245 | case 0: |
| 246 | #if 0 |
| 247 | /* This is just for testing!!! */ |
| 248 | adv7170_write_block(client, init_common, |
| 249 | sizeof(init_common)); |
| 250 | adv7170_write(client, 0x07, TR0MODE | TR0RST); |
| 251 | adv7170_write(client, 0x07, TR0MODE); |
| 252 | #endif |
| 253 | break; |
| 254 | |
| 255 | case ENCODER_GET_CAPABILITIES: |
| 256 | { |
| 257 | struct video_encoder_capability *cap = arg; |
| 258 | |
| 259 | cap->flags = VIDEO_ENCODER_PAL | |
| 260 | VIDEO_ENCODER_NTSC; |
| 261 | cap->inputs = 2; |
| 262 | cap->outputs = 1; |
| 263 | } |
| 264 | break; |
| 265 | |
| 266 | case ENCODER_SET_NORM: |
| 267 | { |
| 268 | int iarg = *(int *) arg; |
| 269 | |
| 270 | dprintk(1, KERN_DEBUG "%s_command: set norm %d", |
| 271 | I2C_NAME(client), iarg); |
| 272 | |
| 273 | switch (iarg) { |
| 274 | |
| 275 | case VIDEO_MODE_NTSC: |
| 276 | adv7170_write_block(client, init_NTSC, |
| 277 | sizeof(init_NTSC)); |
| 278 | if (encoder->input == 0) |
| 279 | adv7170_write(client, 0x02, 0x0e); // Enable genlock |
| 280 | adv7170_write(client, 0x07, TR0MODE | TR0RST); |
| 281 | adv7170_write(client, 0x07, TR0MODE); |
| 282 | break; |
| 283 | |
| 284 | case VIDEO_MODE_PAL: |
| 285 | adv7170_write_block(client, init_PAL, |
| 286 | sizeof(init_PAL)); |
| 287 | if (encoder->input == 0) |
| 288 | adv7170_write(client, 0x02, 0x0e); // Enable genlock |
| 289 | adv7170_write(client, 0x07, TR0MODE | TR0RST); |
| 290 | adv7170_write(client, 0x07, TR0MODE); |
| 291 | break; |
| 292 | |
| 293 | default: |
| 294 | dprintk(1, KERN_ERR "%s: illegal norm: %d\n", |
| 295 | I2C_NAME(client), iarg); |
| 296 | return -EINVAL; |
| 297 | |
| 298 | } |
| 299 | dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client), |
| 300 | norms[iarg]); |
| 301 | encoder->norm = iarg; |
| 302 | } |
| 303 | break; |
| 304 | |
| 305 | case ENCODER_SET_INPUT: |
| 306 | { |
| 307 | int iarg = *(int *) arg; |
| 308 | |
| 309 | /* RJ: *iarg = 0: input is from decoder |
| 310 | *iarg = 1: input is from ZR36060 |
| 311 | *iarg = 2: color bar */ |
| 312 | |
| 313 | dprintk(1, KERN_DEBUG "%s_command: set input from %s\n", |
| 314 | I2C_NAME(client), |
| 315 | iarg == 0 ? "decoder" : "ZR36060"); |
| 316 | |
| 317 | switch (iarg) { |
| 318 | |
| 319 | case 0: |
| 320 | adv7170_write(client, 0x01, 0x20); |
| 321 | adv7170_write(client, 0x08, TR1CAPT); /* TR1 */ |
| 322 | adv7170_write(client, 0x02, 0x0e); // Enable genlock |
| 323 | adv7170_write(client, 0x07, TR0MODE | TR0RST); |
| 324 | adv7170_write(client, 0x07, TR0MODE); |
| 325 | //udelay(10); |
| 326 | break; |
| 327 | |
| 328 | case 1: |
| 329 | adv7170_write(client, 0x01, 0x00); |
| 330 | adv7170_write(client, 0x08, TR1PLAY); /* TR1 */ |
| 331 | adv7170_write(client, 0x02, 0x08); |
| 332 | adv7170_write(client, 0x07, TR0MODE | TR0RST); |
| 333 | adv7170_write(client, 0x07, TR0MODE); |
| 334 | //udelay(10); |
| 335 | break; |
| 336 | |
| 337 | default: |
| 338 | dprintk(1, KERN_ERR "%s: illegal input: %d\n", |
| 339 | I2C_NAME(client), iarg); |
| 340 | return -EINVAL; |
| 341 | |
| 342 | } |
| 343 | dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client), |
| 344 | inputs[iarg]); |
| 345 | encoder->input = iarg; |
| 346 | } |
| 347 | break; |
| 348 | |
| 349 | case ENCODER_SET_OUTPUT: |
| 350 | { |
| 351 | int *iarg = arg; |
| 352 | |
| 353 | /* not much choice of outputs */ |
| 354 | if (*iarg != 0) { |
| 355 | return -EINVAL; |
| 356 | } |
| 357 | } |
| 358 | break; |
| 359 | |
| 360 | case ENCODER_ENABLE_OUTPUT: |
| 361 | { |
| 362 | int *iarg = arg; |
| 363 | |
| 364 | encoder->enable = !!*iarg; |
| 365 | } |
| 366 | break; |
| 367 | |
| 368 | default: |
| 369 | return -EINVAL; |
| 370 | } |
| 371 | |
| 372 | return 0; |
| 373 | } |
| 374 | |
| 375 | /* ----------------------------------------------------------------------- */ |
| 376 | |
| 377 | /* |
| 378 | * Generic i2c probe |
| 379 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' |
| 380 | */ |
| 381 | static unsigned short normal_i2c[] = |
| 382 | { I2C_ADV7170 >> 1, (I2C_ADV7170 >> 1) + 1, |
| 383 | I2C_ADV7171 >> 1, (I2C_ADV7171 >> 1) + 1, |
| 384 | I2C_CLIENT_END |
| 385 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | |
Jean Delvare | 68cc9d0 | 2005-04-02 20:04:41 +0200 | [diff] [blame] | 387 | static unsigned short ignore = I2C_CLIENT_END; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | |
| 389 | static struct i2c_client_address_data addr_data = { |
| 390 | .normal_i2c = normal_i2c, |
Jean Delvare | 68cc9d0 | 2005-04-02 20:04:41 +0200 | [diff] [blame] | 391 | .probe = &ignore, |
| 392 | .ignore = &ignore, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | }; |
| 394 | |
| 395 | static struct i2c_driver i2c_driver_adv7170; |
| 396 | |
| 397 | static int |
| 398 | adv7170_detect_client (struct i2c_adapter *adapter, |
| 399 | int address, |
| 400 | int kind) |
| 401 | { |
| 402 | int i; |
| 403 | struct i2c_client *client; |
| 404 | struct adv7170 *encoder; |
| 405 | char *dname; |
| 406 | |
| 407 | dprintk(1, |
| 408 | KERN_INFO |
| 409 | "adv7170.c: detecting adv7170 client on address 0x%x\n", |
| 410 | address << 1); |
| 411 | |
| 412 | /* Check if the adapter supports the needed features */ |
| 413 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 414 | return 0; |
| 415 | |
| 416 | client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); |
| 417 | if (client == 0) |
| 418 | return -ENOMEM; |
| 419 | memset(client, 0, sizeof(struct i2c_client)); |
| 420 | client->addr = address; |
| 421 | client->adapter = adapter; |
| 422 | client->driver = &i2c_driver_adv7170; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | if ((client->addr == I2C_ADV7170 >> 1) || |
| 424 | (client->addr == (I2C_ADV7170 >> 1) + 1)) { |
| 425 | dname = adv7170_name; |
| 426 | } else if ((client->addr == I2C_ADV7171 >> 1) || |
| 427 | (client->addr == (I2C_ADV7171 >> 1) + 1)) { |
| 428 | dname = adv7171_name; |
| 429 | } else { |
| 430 | /* We should never get here!!! */ |
| 431 | kfree(client); |
| 432 | return 0; |
| 433 | } |
| 434 | strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client))); |
| 435 | |
| 436 | encoder = kmalloc(sizeof(struct adv7170), GFP_KERNEL); |
| 437 | if (encoder == NULL) { |
| 438 | kfree(client); |
| 439 | return -ENOMEM; |
| 440 | } |
| 441 | memset(encoder, 0, sizeof(struct adv7170)); |
| 442 | encoder->norm = VIDEO_MODE_NTSC; |
| 443 | encoder->input = 0; |
| 444 | encoder->enable = 1; |
| 445 | i2c_set_clientdata(client, encoder); |
| 446 | |
| 447 | i = i2c_attach_client(client); |
| 448 | if (i) { |
| 449 | kfree(client); |
| 450 | kfree(encoder); |
| 451 | return i; |
| 452 | } |
| 453 | |
| 454 | i = adv7170_write_block(client, init_NTSC, sizeof(init_NTSC)); |
| 455 | if (i >= 0) { |
| 456 | i = adv7170_write(client, 0x07, TR0MODE | TR0RST); |
| 457 | i = adv7170_write(client, 0x07, TR0MODE); |
| 458 | i = adv7170_read(client, 0x12); |
| 459 | dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%02x\n", |
| 460 | I2C_NAME(client), i & 1, client->addr << 1); |
| 461 | } |
| 462 | if (i < 0) { |
| 463 | dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n", |
| 464 | I2C_NAME(client), i); |
| 465 | } |
| 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | static int |
| 471 | adv7170_attach_adapter (struct i2c_adapter *adapter) |
| 472 | { |
| 473 | dprintk(1, |
| 474 | KERN_INFO |
| 475 | "adv7170.c: starting probe for adapter %s (0x%x)\n", |
| 476 | I2C_NAME(adapter), adapter->id); |
| 477 | return i2c_probe(adapter, &addr_data, &adv7170_detect_client); |
| 478 | } |
| 479 | |
| 480 | static int |
| 481 | adv7170_detach_client (struct i2c_client *client) |
| 482 | { |
| 483 | struct adv7170 *encoder = i2c_get_clientdata(client); |
| 484 | int err; |
| 485 | |
| 486 | err = i2c_detach_client(client); |
| 487 | if (err) { |
| 488 | return err; |
| 489 | } |
| 490 | |
| 491 | kfree(encoder); |
| 492 | kfree(client); |
| 493 | |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | /* ----------------------------------------------------------------------- */ |
| 498 | |
| 499 | static struct i2c_driver i2c_driver_adv7170 = { |
Laurent Riffard | 604f28e | 2005-11-26 20:43:39 +0100 | [diff] [blame^] | 500 | .driver = { |
| 501 | .owner = THIS_MODULE, |
| 502 | .name = "adv7170", /* name */ |
| 503 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
| 505 | .id = I2C_DRIVERID_ADV7170, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
| 507 | .attach_adapter = adv7170_attach_adapter, |
| 508 | .detach_client = adv7170_detach_client, |
| 509 | .command = adv7170_command, |
| 510 | }; |
| 511 | |
| 512 | static int __init |
| 513 | adv7170_init (void) |
| 514 | { |
| 515 | return i2c_add_driver(&i2c_driver_adv7170); |
| 516 | } |
| 517 | |
| 518 | static void __exit |
| 519 | adv7170_exit (void) |
| 520 | { |
| 521 | i2c_del_driver(&i2c_driver_adv7170); |
| 522 | } |
| 523 | |
| 524 | module_init(adv7170_init); |
| 525 | module_exit(adv7170_exit); |