1/* 2 * adv7343 - ADV7343 Video Encoder Driver 3 * 4 * The encoder hardware does not support SECAM. 5 * 6 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation version 2. 11 * 12 * This program is distributed .as is. WITHOUT ANY WARRANTY of any 13 * kind, whether express or implied; without even the implied warranty 14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 18#include <linux/kernel.h> 19#include <linux/init.h> 20#include <linux/ctype.h> 21#include <linux/slab.h> 22#include <linux/i2c.h> 23#include <linux/device.h> 24#include <linux/delay.h> 25#include <linux/module.h> 26#include <linux/videodev2.h> 27#include <linux/uaccess.h> 28 29#include <media/adv7343.h> 30#include <media/v4l2-device.h> 31#include <media/v4l2-chip-ident.h> 32 33#include "adv7343_regs.h" 34 35MODULE_DESCRIPTION("ADV7343 video encoder driver"); 36MODULE_LICENSE("GPL"); 37 38static int debug; 39module_param(debug, int, 0644); 40MODULE_PARM_DESC(debug, "Debug level 0-1"); 41 42struct adv7343_state { 43 struct v4l2_subdev sd; 44 u8 reg00; 45 u8 reg01; 46 u8 reg02; 47 u8 reg35; 48 u8 reg80; 49 u8 reg82; 50 int bright; 51 int hue; 52 int gain; 53 u32 output; 54 v4l2_std_id std; 55}; 56 57static inline struct adv7343_state *to_state(struct v4l2_subdev *sd) 58{ 59 return container_of(sd, struct adv7343_state, sd); 60} 61 62static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value) 63{ 64 struct i2c_client *client = v4l2_get_subdevdata(sd); 65 66 return i2c_smbus_write_byte_data(client, reg, value); 67} 68 69static const u8 adv7343_init_reg_val[] = { 70 ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT, 71 ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT, 72 73 ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT, 74 ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT, 75 ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT, 76 ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT, 77 ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT, 78 ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT, 79 ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT, 80 81 ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT, 82 ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT, 83 ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT, 84 ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT, 85 ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT, 86 ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT, 87 ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT, 88 ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT, 89 90 ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT, 91 ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT, 92 ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT, 93}; 94 95/* 96 * 2^32 97 * FSC(reg) = FSC (HZ) * -------- 98 * 27000000 99 */ 100static const struct adv7343_std_info stdinfo[] = { 101 { 102 /* FSC(Hz) = 3,579,545.45 Hz */ 103 SD_STD_NTSC, 569408542, V4L2_STD_NTSC, 104 }, { 105 /* FSC(Hz) = 3,575,611.00 Hz */ 106 SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M, 107 }, { 108 /* FSC(Hz) = 3,582,056.00 */ 109 SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc, 110 }, { 111 /* FSC(Hz) = 4,433,618.75 Hz */ 112 SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N, 113 }, { 114 /* FSC(Hz) = 4,433,618.75 Hz */ 115 SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL, 116 }, { 117 /* FSC(Hz) = 4,433,618.75 Hz */ 118 SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443, 119 }, { 120 /* FSC(Hz) = 4,433,618.75 Hz */ 121 SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60, 122 }, 123}; 124 125static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std) 126{ 127 struct adv7343_state *state = to_state(sd); 128 struct adv7343_std_info *std_info; 129 int output_idx, num_std; 130 char *fsc_ptr; 131 u8 reg, val; 132 int err = 0; 133 int i = 0; 134 135 output_idx = state->output; 136 137 std_info = (struct adv7343_std_info *)stdinfo; 138 num_std = ARRAY_SIZE(stdinfo); 139 140 for (i = 0; i < num_std; i++) { 141 if (std_info[i].stdid & std) 142 break; 143 } 144 145 if (i == num_std) { 146 v4l2_dbg(1, debug, sd, 147 "Invalid std or std is not supported: %llx\n", 148 (unsigned long long)std); 149 return -EINVAL; 150 } 151 152 /* Set the standard */ 153 val = state->reg80 & (~(SD_STD_MASK)); 154 val |= std_info[i].standard_val3; 155 err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val); 156 if (err < 0) 157 goto setstd_exit; 158 159 state->reg80 = val; 160 161 /* Configure the input mode register */ 162 val = state->reg01 & (~((u8) INPUT_MODE_MASK)); 163 val |= SD_INPUT_MODE; 164 err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val); 165 if (err < 0) 166 goto setstd_exit; 167 168 state->reg01 = val; 169 170 /* Program the sub carrier frequency registers */ 171 fsc_ptr = (unsigned char *)&std_info[i].fsc_val; 172 reg = ADV7343_FSC_REG0; 173 for (i = 0; i < 4; i++, reg++, fsc_ptr++) { 174 err = adv7343_write(sd, reg, *fsc_ptr); 175 if (err < 0) 176 goto setstd_exit; 177 } 178 179 val = state->reg80; 180 181 /* Filter settings */ 182 if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443)) 183 val &= 0x03; 184 else if (std & ~V4L2_STD_SECAM) 185 val |= 0x04; 186 187 err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val); 188 if (err < 0) 189 goto setstd_exit; 190 191 state->reg80 = val; 192 193setstd_exit: 194 if (err != 0) 195 v4l2_err(sd, "Error setting std, write failed\n"); 196 197 return err; 198} 199 200static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type) 201{ 202 struct adv7343_state *state = to_state(sd); 203 unsigned char val; 204 int err = 0; 205 206 if (output_type > ADV7343_SVIDEO_ID) { 207 v4l2_dbg(1, debug, sd, 208 "Invalid output type or output type not supported:%d\n", 209 output_type); 210 return -EINVAL; 211 } 212 213 /* Enable Appropriate DAC */ 214 val = state->reg00 & 0x03; 215 216 if (output_type == ADV7343_COMPOSITE_ID) 217 val |= ADV7343_COMPOSITE_POWER_VALUE; 218 else if (output_type == ADV7343_COMPONENT_ID) 219 val |= ADV7343_COMPONENT_POWER_VALUE; 220 else 221 val |= ADV7343_SVIDEO_POWER_VALUE; 222 223 err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val); 224 if (err < 0) 225 goto setoutput_exit; 226 227 state->reg00 = val; 228 229 /* Enable YUV output */ 230 val = state->reg02 | YUV_OUTPUT_SELECT; 231 err = adv7343_write(sd, ADV7343_MODE_REG0, val); 232 if (err < 0) 233 goto setoutput_exit; 234 235 state->reg02 = val; 236 237 /* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */ 238 val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI); 239 err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val); 240 if (err < 0) 241 goto setoutput_exit; 242 243 state->reg82 = val; 244 245 /* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to 246 * zero */ 247 val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI); 248 err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val); 249 if (err < 0) 250 goto setoutput_exit; 251 252 state->reg35 = val; 253 254setoutput_exit: 255 if (err != 0) 256 v4l2_err(sd, "Error setting output, write failed\n"); 257 258 return err; 259} 260 261static int adv7343_log_status(struct v4l2_subdev *sd) 262{ 263 struct adv7343_state *state = to_state(sd); 264 265 v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std); 266 v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" : 267 ((state->output == 1) ? "Component" : "S-Video")); 268 return 0; 269} 270 271static int adv7343_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) 272{ 273 switch (qc->id) { 274 case V4L2_CID_BRIGHTNESS: 275 return v4l2_ctrl_query_fill(qc, ADV7343_BRIGHTNESS_MIN, 276 ADV7343_BRIGHTNESS_MAX, 1, 277 ADV7343_BRIGHTNESS_DEF); 278 case V4L2_CID_HUE: 279 return v4l2_ctrl_query_fill(qc, ADV7343_HUE_MIN, 280 ADV7343_HUE_MAX, 1 , 281 ADV7343_HUE_DEF); 282 case V4L2_CID_GAIN: 283 return v4l2_ctrl_query_fill(qc, ADV7343_GAIN_MIN, 284 ADV7343_GAIN_MAX, 1, 285 ADV7343_GAIN_DEF); 286 default: 287 break; 288 } 289 290 return 0; 291} 292 293static int adv7343_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) 294{ 295 struct adv7343_state *state = to_state(sd); 296 int err = 0; 297 298 switch (ctrl->id) { 299 case V4L2_CID_BRIGHTNESS: 300 if (ctrl->value < ADV7343_BRIGHTNESS_MIN || 301 ctrl->value > ADV7343_BRIGHTNESS_MAX) { 302 v4l2_dbg(1, debug, sd, 303 "invalid brightness settings %d\n", 304 ctrl->value); 305 return -ERANGE; 306 } 307 308 state->bright = ctrl->value; 309 err = adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS, 310 state->bright); 311 break; 312 313 case V4L2_CID_HUE: 314 if (ctrl->value < ADV7343_HUE_MIN || 315 ctrl->value > ADV7343_HUE_MAX) { 316 v4l2_dbg(1, debug, sd, "invalid hue settings %d\n", 317 ctrl->value); 318 return -ERANGE; 319 } 320 321 state->hue = ctrl->value; 322 err = adv7343_write(sd, ADV7343_SD_HUE_REG, state->hue); 323 break; 324 325 case V4L2_CID_GAIN: 326 if (ctrl->value < ADV7343_GAIN_MIN || 327 ctrl->value > ADV7343_GAIN_MAX) { 328 v4l2_dbg(1, debug, sd, "invalid gain settings %d\n", 329 ctrl->value); 330 return -ERANGE; 331 } 332 333 if ((ctrl->value > POSITIVE_GAIN_MAX) && 334 (ctrl->value < NEGATIVE_GAIN_MIN)) { 335 v4l2_dbg(1, debug, sd, 336 "gain settings not within the specified range\n"); 337 return -ERANGE; 338 } 339 340 state->gain = ctrl->value; 341 err = adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, state->gain); 342 break; 343 344 default: 345 return -EINVAL; 346 } 347 348 if (err < 0) 349 v4l2_err(sd, "Failed to set the encoder controls\n"); 350 351 return err; 352} 353 354static int adv7343_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) 355{ 356 struct adv7343_state *state = to_state(sd); 357 358 switch (ctrl->id) { 359 case V4L2_CID_BRIGHTNESS: 360 ctrl->value = state->bright; 361 break; 362 363 case V4L2_CID_HUE: 364 ctrl->value = state->hue; 365 break; 366 367 case V4L2_CID_GAIN: 368 ctrl->value = state->gain; 369 break; 370 371 default: 372 return -EINVAL; 373 } 374 375 return 0; 376} 377 378static int adv7343_g_chip_ident(struct v4l2_subdev *sd, 379 struct v4l2_dbg_chip_ident *chip) 380{ 381 struct i2c_client *client = v4l2_get_subdevdata(sd); 382 383 return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0); 384} 385 386static const struct v4l2_subdev_core_ops adv7343_core_ops = { 387 .log_status = adv7343_log_status, 388 .g_chip_ident = adv7343_g_chip_ident, 389 .g_ctrl = adv7343_g_ctrl, 390 .s_ctrl = adv7343_s_ctrl, 391 .queryctrl = adv7343_queryctrl, 392}; 393 394static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) 395{ 396 struct adv7343_state *state = to_state(sd); 397 int err = 0; 398 399 if (state->std == std) 400 return 0; 401 402 err = adv7343_setstd(sd, std); 403 if (!err) 404 state->std = std; 405 406 return err; 407} 408 409static int adv7343_s_routing(struct v4l2_subdev *sd, 410 u32 input, u32 output, u32 config) 411{ 412 struct adv7343_state *state = to_state(sd); 413 int err = 0; 414 415 if (state->output == output) 416 return 0; 417 418 err = adv7343_setoutput(sd, output); 419 if (!err) 420 state->output = output; 421 422 return err; 423} 424 425static const struct v4l2_subdev_video_ops adv7343_video_ops = { 426 .s_std_output = adv7343_s_std_output, 427 .s_routing = adv7343_s_routing, 428}; 429 430static const struct v4l2_subdev_ops adv7343_ops = { 431 .core = &adv7343_core_ops, 432 .video = &adv7343_video_ops, 433}; 434 435static int adv7343_initialize(struct v4l2_subdev *sd) 436{ 437 struct adv7343_state *state = to_state(sd); 438 int err = 0; 439 int i; 440 441 for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) { 442 443 err = adv7343_write(sd, adv7343_init_reg_val[i], 444 adv7343_init_reg_val[i+1]); 445 if (err) { 446 v4l2_err(sd, "Error initializing\n"); 447 return err; 448 } 449 } 450 451 /* Configure for default video standard */ 452 err = adv7343_setoutput(sd, state->output); 453 if (err < 0) { 454 v4l2_err(sd, "Error setting output during init\n"); 455 return -EINVAL; 456 } 457 458 err = adv7343_setstd(sd, state->std); 459 if (err < 0) { 460 v4l2_err(sd, "Error setting std during init\n"); 461 return -EINVAL; 462 } 463 464 return err; 465} 466 467static int adv7343_probe(struct i2c_client *client, 468 const struct i2c_device_id *id) 469{ 470 struct adv7343_state *state; 471 472 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 473 return -ENODEV; 474 475 v4l_info(client, "chip found @ 0x%x (%s)\n", 476 client->addr << 1, client->adapter->name); 477 478 state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL); 479 if (state == NULL) 480 return -ENOMEM; 481 482 state->reg00 = 0x80; 483 state->reg01 = 0x00; 484 state->reg02 = 0x20; 485 state->reg35 = 0x00; 486 state->reg80 = ADV7343_SD_MODE_REG1_DEFAULT; 487 state->reg82 = ADV7343_SD_MODE_REG2_DEFAULT; 488 489 state->output = ADV7343_COMPOSITE_ID; 490 state->std = V4L2_STD_NTSC; 491 492 v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops); 493 return adv7343_initialize(&state->sd); 494} 495 496static int adv7343_remove(struct i2c_client *client) 497{ 498 struct v4l2_subdev *sd = i2c_get_clientdata(client); 499 500 v4l2_device_unregister_subdev(sd); 501 kfree(to_state(sd)); 502 503 return 0; 504} 505 506static const struct i2c_device_id adv7343_id[] = { 507 {"adv7343", 0}, 508 {}, 509}; 510 511MODULE_DEVICE_TABLE(i2c, adv7343_id); 512 513static struct i2c_driver adv7343_driver = { 514 .driver = { 515 .owner = THIS_MODULE, 516 .name = "adv7343", 517 }, 518 .probe = adv7343_probe, 519 .remove = adv7343_remove, 520 .id_table = adv7343_id, 521}; 522 523static __init int init_adv7343(void) 524{ 525 return i2c_add_driver(&adv7343_driver); 526} 527 528static __exit void exit_adv7343(void) 529{ 530 i2c_del_driver(&adv7343_driver); 531} 532 533module_init(init_adv7343); 534module_exit(exit_adv7343); 535