drivers/media/i2c/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 #include <linux/of.h>
  29 #include <linux/of_graph.h>
  30
  31 #include <media/adv7343.h>
  32 #include <media/v4l2-async.h>
  33 #include <media/v4l2-device.h>
  34 #include <media/v4l2-ctrls.h>
  35
  36 #include "adv7343_regs.h"
  37
  38 MODULE_DESCRIPTION("ADV7343 video encoder driver");
  39 MODULE_LICENSE("GPL");
  40
  41 static int debug;
  42 module_param(debug, int, 0644);
  43 MODULE_PARM_DESC(debug, "Debug level 0-1");
  44
  45 struct adv7343_state {
  46         struct v4l2_subdev sd;
  47         struct v4l2_ctrl_handler hdl;
  48         const struct adv7343_platform_data *pdata;
  49         u8 reg00;
  50         u8 reg01;
  51         u8 reg02;
  52         u8 reg35;
  53         u8 reg80;
  54         u8 reg82;
  55         u32 output;
  56         v4l2_std_id std;
  57 };
  58
  59 static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
  60 {
  61         return container_of(sd, struct adv7343_state, sd);
  62 }
  63
  64 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
  65 {
  66         return &container_of(ctrl->handler, struct adv7343_state, hdl)->sd;
  67 }
  68
  69 static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value)
  70 {
  71         struct i2c_client *client = v4l2_get_subdevdata(sd);
  72
  73         return i2c_smbus_write_byte_data(client, reg, value);
  74 }
  75
  76 static const u8 adv7343_init_reg_val[] = {
  77         ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
  78         ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,
  79
  80         ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
  81         ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
  82         ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
  83         ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
  84         ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
  85         ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
  86         ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,
  87
  88         ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
  89         ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
  90         ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
  91         ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
  92         ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
  93         ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
  94         ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
  95         ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,
  96
  97         ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
  98         ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
  99         ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT,
 100 };
 101
 102 /*
 103  *                          2^32
 104  * FSC(reg) =  FSC (HZ) * --------
 105  *                        27000000
 106  */
 107 static const struct adv7343_std_info stdinfo[] = {
 108         {
 109                 /* FSC(Hz) = 3,579,545.45 Hz */
 110                 SD_STD_NTSC, 569408542, V4L2_STD_NTSC,
 111         }, {
 112                 /* FSC(Hz) = 3,575,611.00 Hz */
 113                 SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M,
 114         }, {
 115                 /* FSC(Hz) = 3,582,056.00 */
 116                 SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc,
 117         }, {
 118                 /* FSC(Hz) = 4,433,618.75 Hz */
 119                 SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N,
 120         }, {
 121                 /* FSC(Hz) = 4,433,618.75 Hz */
 122                 SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL,
 123         }, {
 124                 /* FSC(Hz) = 4,433,618.75 Hz */
 125                 SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443,
 126         }, {
 127                 /* FSC(Hz) = 4,433,618.75 Hz */
 128                 SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60,
 129         },
 130 };
 131
 132 static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
 133 {
 134         struct adv7343_state *state = to_state(sd);
 135         struct adv7343_std_info *std_info;
 136         int num_std;
 137         char *fsc_ptr;
 138         u8 reg, val;
 139         int err = 0;
 140         int i = 0;
 141
 142         std_info = (struct adv7343_std_info *)stdinfo;
 143         num_std = ARRAY_SIZE(stdinfo);
 144
 145         for (i = 0; i < num_std; i++) {
 146                 if (std_info[i].stdid & std)
 147                         break;
 148         }
 149
 150         if (i == num_std) {
 151                 v4l2_dbg(1, debug, sd,
 152                                 "Invalid std or std is not supported: %llx\n",
 153                                                 (unsigned long long)std);
 154                 return -EINVAL;
 155         }
 156
 157         /* Set the standard */
 158         val = state->reg80 & (~(SD_STD_MASK));
 159         val |= std_info[i].standard_val3;
 160         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
 161         if (err < 0)
 162                 goto setstd_exit;
 163
 164         state->reg80 = val;
 165
 166         /* Configure the input mode register */
 167         val = state->reg01 & (~((u8) INPUT_MODE_MASK));
 168         val |= SD_INPUT_MODE;
 169         err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
 170         if (err < 0)
 171                 goto setstd_exit;
 172
 173         state->reg01 = val;
 174
 175         /* Program the sub carrier frequency registers */
 176         fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
 177         reg = ADV7343_FSC_REG0;
 178         for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
 179                 err = adv7343_write(sd, reg, *fsc_ptr);
 180                 if (err < 0)
 181                         goto setstd_exit;
 182         }
 183
 184         val = state->reg80;
 185
 186         /* Filter settings */
 187         if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
 188                 val &= 0x03;
 189         else if (std & ~V4L2_STD_SECAM)
 190                 val |= 0x04;
 191
 192         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
 193         if (err < 0)
 194                 goto setstd_exit;
 195
 196         state->reg80 = val;
 197
 198 setstd_exit:
 199         if (err != 0)
 200                 v4l2_err(sd, "Error setting std, write failed\n");
 201
 202         return err;
 203 }
 204
 205 static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
 206 {
 207         struct adv7343_state *state = to_state(sd);
 208         unsigned char val;
 209         int err = 0;
 210
 211         if (output_type > ADV7343_SVIDEO_ID) {
 212                 v4l2_dbg(1, debug, sd,
 213                         "Invalid output type or output type not supported:%d\n",
 214                                                                 output_type);
 215                 return -EINVAL;
 216         }
 217
 218         /* Enable Appropriate DAC */
 219         val = state->reg00 & 0x03;
 220
 221         /* configure default configuration */
 222         if (!state->pdata)
 223                 if (output_type == ADV7343_COMPOSITE_ID)
 224                         val |= ADV7343_COMPOSITE_POWER_VALUE;
 225                 else if (output_type == ADV7343_COMPONENT_ID)
 226                         val |= ADV7343_COMPONENT_POWER_VALUE;
 227                 else
 228                         val |= ADV7343_SVIDEO_POWER_VALUE;
 229         else
 230                 val = state->pdata->mode_config.sleep_mode << 0 |
 231                       state->pdata->mode_config.pll_control << 1 |
 232                       state->pdata->mode_config.dac[2] << 2 |
 233                       state->pdata->mode_config.dac[1] << 3 |
 234                       state->pdata->mode_config.dac[0] << 4 |
 235                       state->pdata->mode_config.dac[5] << 5 |
 236                       state->pdata->mode_config.dac[4] << 6 |
 237                       state->pdata->mode_config.dac[3] << 7;
 238
 239         err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
 240         if (err < 0)
 241                 goto setoutput_exit;
 242
 243         state->reg00 = val;
 244
 245         /* Enable YUV output */
 246         val = state->reg02 | YUV_OUTPUT_SELECT;
 247         err = adv7343_write(sd, ADV7343_MODE_REG0, val);
 248         if (err < 0)
 249                 goto setoutput_exit;
 250
 251         state->reg02 = val;
 252
 253         /* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
 254         val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
 255
 256         if (state->pdata && state->pdata->sd_config.sd_dac_out[0])
 257                 val = val | (state->pdata->sd_config.sd_dac_out[0] << 1);
 258         else if (state->pdata && !state->pdata->sd_config.sd_dac_out[0])
 259                 val = val & ~(state->pdata->sd_config.sd_dac_out[0] << 1);
 260
 261         if (state->pdata && state->pdata->sd_config.sd_dac_out[1])
 262                 val = val | (state->pdata->sd_config.sd_dac_out[1] << 2);
 263         else if (state->pdata && !state->pdata->sd_config.sd_dac_out[1])
 264                 val = val & ~(state->pdata->sd_config.sd_dac_out[1] << 2);
 265
 266         err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
 267         if (err < 0)
 268                 goto setoutput_exit;
 269
 270         state->reg82 = val;
 271
 272         /* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
 273          * zero */
 274         val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
 275         err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
 276         if (err < 0)
 277                 goto setoutput_exit;
 278
 279         state->reg35 = val;
 280
 281 setoutput_exit:
 282         if (err != 0)
 283                 v4l2_err(sd, "Error setting output, write failed\n");
 284
 285         return err;
 286 }
 287
 288 static int adv7343_log_status(struct v4l2_subdev *sd)
 289 {
 290         struct adv7343_state *state = to_state(sd);
 291
 292         v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
 293         v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
 294                         ((state->output == 1) ? "Component" : "S-Video"));
 295         return 0;
 296 }
 297
 298 static int adv7343_s_ctrl(struct v4l2_ctrl *ctrl)
 299 {
 300         struct v4l2_subdev *sd = to_sd(ctrl);
 301
 302         switch (ctrl->id) {
 303         case V4L2_CID_BRIGHTNESS:
 304                 return adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
 305                                         ctrl->val);
 306
 307         case V4L2_CID_HUE:
 308                 return adv7343_write(sd, ADV7343_SD_HUE_REG, ctrl->val);
 309
 310         case V4L2_CID_GAIN:
 311                 return adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, ctrl->val);
 312         }
 313         return -EINVAL;
 314 }
 315
 316 static const struct v4l2_ctrl_ops adv7343_ctrl_ops = {
 317         .s_ctrl = adv7343_s_ctrl,
 318 };
 319
 320 static const struct v4l2_subdev_core_ops adv7343_core_ops = {
 321         .log_status = adv7343_log_status,
 322 };
 323
 324 static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
 325 {
 326         struct adv7343_state *state = to_state(sd);
 327         int err = 0;
 328
 329         if (state->std == std)
 330                 return 0;
 331
 332         err = adv7343_setstd(sd, std);
 333         if (!err)
 334                 state->std = std;
 335
 336         return err;
 337 }
 338
 339 static int adv7343_s_routing(struct v4l2_subdev *sd,
 340                 u32 input, u32 output, u32 config)
 341 {
 342         struct adv7343_state *state = to_state(sd);
 343         int err = 0;
 344
 345         if (state->output == output)
 346                 return 0;
 347
 348         err = adv7343_setoutput(sd, output);
 349         if (!err)
 350                 state->output = output;
 351
 352         return err;
 353 }
 354
 355 static const struct v4l2_subdev_video_ops adv7343_video_ops = {
 356         .s_std_output   = adv7343_s_std_output,
 357         .s_routing      = adv7343_s_routing,
 358 };
 359
 360 static const struct v4l2_subdev_ops adv7343_ops = {
 361         .core   = &adv7343_core_ops,
 362         .video  = &adv7343_video_ops,
 363 };
 364
 365 static int adv7343_initialize(struct v4l2_subdev *sd)
 366 {
 367         struct adv7343_state *state = to_state(sd);
 368         int err = 0;
 369         int i;
 370
 371         for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {
 372
 373                 err = adv7343_write(sd, adv7343_init_reg_val[i],
 374                                         adv7343_init_reg_val[i+1]);
 375                 if (err) {
 376                         v4l2_err(sd, "Error initializing\n");
 377                         return err;
 378                 }
 379         }
 380
 381         /* Configure for default video standard */
 382         err = adv7343_setoutput(sd, state->output);
 383         if (err < 0) {
 384                 v4l2_err(sd, "Error setting output during init\n");
 385                 return -EINVAL;
 386         }
 387
 388         err = adv7343_setstd(sd, state->std);
 389         if (err < 0) {
 390                 v4l2_err(sd, "Error setting std during init\n");
 391                 return -EINVAL;
 392         }
 393
 394         return err;
 395 }
 396
 397 static struct adv7343_platform_data *
 398 adv7343_get_pdata(struct i2c_client *client)
 399 {
 400         struct adv7343_platform_data *pdata;
 401         struct device_node *np;
 402
 403         if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
 404                 return client->dev.platform_data;
 405
 406         np = of_graph_get_next_endpoint(client->dev.of_node, NULL);
 407         if (!np)
 408                 return NULL;
 409
 410         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 411         if (!pdata)
 412                 goto done;
 413
 414         pdata->mode_config.sleep_mode =
 415                         of_property_read_bool(np, "adi,power-mode-sleep-mode");
 416
 417         pdata->mode_config.pll_control =
 418                         of_property_read_bool(np, "adi,power-mode-pll-ctrl");
 419
 420         of_property_read_u32_array(np, "adi,dac-enable",
 421                                    pdata->mode_config.dac, 6);
 422
 423         of_property_read_u32_array(np, "adi,sd-dac-enable",
 424                                    pdata->sd_config.sd_dac_out, 2);
 425
 426 done:
 427         of_node_put(np);
 428         return pdata;
 429 }
 430
 431 static int adv7343_probe(struct i2c_client *client,
 432                                 const struct i2c_device_id *id)
 433 {
 434         struct adv7343_state *state;
 435         int err;
 436
 437         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 438                 return -ENODEV;
 439
 440         v4l_info(client, "chip found @ 0x%x (%s)\n",
 441                         client->addr << 1, client->adapter->name);
 442
 443         state = devm_kzalloc(&client->dev, sizeof(struct adv7343_state),
 444                              GFP_KERNEL);
 445         if (state == NULL)
 446                 return -ENOMEM;
 447
 448         /* Copy board specific information here */
 449         state->pdata = adv7343_get_pdata(client);
 450
 451         state->reg00    = 0x80;
 452         state->reg01    = 0x00;
 453         state->reg02    = 0x20;
 454         state->reg35    = 0x00;
 455         state->reg80    = ADV7343_SD_MODE_REG1_DEFAULT;
 456         state->reg82    = ADV7343_SD_MODE_REG2_DEFAULT;
 457
 458         state->output = ADV7343_COMPOSITE_ID;
 459         state->std = V4L2_STD_NTSC;
 460
 461         v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
 462
 463         v4l2_ctrl_handler_init(&state->hdl, 2);
 464         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 465                         V4L2_CID_BRIGHTNESS, ADV7343_BRIGHTNESS_MIN,
 466                                              ADV7343_BRIGHTNESS_MAX, 1,
 467                                              ADV7343_BRIGHTNESS_DEF);
 468         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 469                         V4L2_CID_HUE, ADV7343_HUE_MIN,
 470                                       ADV7343_HUE_MAX, 1,
 471                                       ADV7343_HUE_DEF);
 472         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 473                         V4L2_CID_GAIN, ADV7343_GAIN_MIN,
 474                                        ADV7343_GAIN_MAX, 1,
 475                                        ADV7343_GAIN_DEF);
 476         state->sd.ctrl_handler = &state->hdl;
 477         if (state->hdl.error) {
 478                 err = state->hdl.error;
 479                 goto done;
 480         }
 481         v4l2_ctrl_handler_setup(&state->hdl);
 482
 483         err = adv7343_initialize(&state->sd);
 484         if (err)
 485                 goto done;
 486
 487         err = v4l2_async_register_subdev(&state->sd);
 488
 489 done:
 490         if (err < 0)
 491                 v4l2_ctrl_handler_free(&state->hdl);
 492
 493         return err;
 494 }
 495
 496 static int adv7343_remove(struct i2c_client *client)
 497 {
 498         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 499         struct adv7343_state *state = to_state(sd);
 500
 501         v4l2_async_unregister_subdev(&state->sd);
 502         v4l2_ctrl_handler_free(&state->hdl);
 503
 504         return 0;
 505 }
 506
 507 static const struct i2c_device_id adv7343_id[] = {
 508         {"adv7343", 0},
 509         {},
 510 };
 511
 512 MODULE_DEVICE_TABLE(i2c, adv7343_id);
 513
 514 #if IS_ENABLED(CONFIG_OF)
 515 static const struct of_device_id adv7343_of_match[] = {
 516         {.compatible = "adi,adv7343", },
 517         { /* sentinel */ },
 518 };
 519 MODULE_DEVICE_TABLE(of, adv7343_of_match);
 520 #endif
 521
 522 static struct i2c_driver adv7343_driver = {
 523         .driver = {
 524                 .of_match_table = of_match_ptr(adv7343_of_match),
 525                 .name   = "adv7343",
 526         },
 527         .probe          = adv7343_probe,
 528         .remove         = adv7343_remove,
 529         .id_table       = adv7343_id,
 530 };
 531
 532 module_i2c_driver(adv7343_driver);