drivers/media/video/adv7343.c

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