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/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
  35 MODULE_DESCRIPTION("ADV7343 video encoder driver");
  36 MODULE_LICENSE("GPL");
  37
  38 static int debug;
  39 module_param(debug, int, 0644);
  40 MODULE_PARM_DESC(debug, "Debug level 0-1");
  41
  42 struct 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
  57 static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
  58 {
  59         return container_of(sd, struct adv7343_state, sd);
  60 }
  61
  62 static 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
  69 static 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  */
 100 static 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
 125 static 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
 193 setstd_exit:
 194         if (err != 0)
 195                 v4l2_err(sd, "Error setting std, write failed\n");
 196
 197         return err;
 198 }
 199
 200 static 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
 254 setoutput_exit:
 255         if (err != 0)
 256                 v4l2_err(sd, "Error setting output, write failed\n");
 257
 258         return err;
 259 }
 260
 261 static 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
 271 static 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
 293 static 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
 354 static 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
 378 static 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
 386 static 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
 394 static 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
 409 static 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
 425 static 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
 430 static const struct v4l2_subdev_ops adv7343_ops = {
 431         .core   = &adv7343_core_ops,
 432         .video  = &adv7343_video_ops,
 433 };
 434
 435 static 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
 467 static 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
 496 static 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
 506 static const struct i2c_device_id adv7343_id[] = {
 507         {"adv7343", 0},
 508         {},
 509 };
 510
 511 MODULE_DEVICE_TABLE(i2c, adv7343_id);
 512
 513 static 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
 523 static __init int init_adv7343(void)
 524 {
 525         return i2c_add_driver(&adv7343_driver);
 526 }
 527
 528 static __exit void exit_adv7343(void)
 529 {
 530         i2c_del_driver(&adv7343_driver);
 531 }
 532
 533 module_init(init_adv7343);
 534 module_exit(exit_adv7343);