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 #include <media/v4l2-ctrls.h>
  33
  34 #include "adv7343_regs.h"
  35
  36 MODULE_DESCRIPTION("ADV7343 video encoder driver");
  37 MODULE_LICENSE("GPL");
  38
  39 static int debug;
  40 module_param(debug, int, 0644);
  41 MODULE_PARM_DESC(debug, "Debug level 0-1");
  42
  43 struct adv7343_state {
  44         struct v4l2_subdev sd;
  45         struct v4l2_ctrl_handler hdl;
  46         u8 reg00;
  47         u8 reg01;
  48         u8 reg02;
  49         u8 reg35;
  50         u8 reg80;
  51         u8 reg82;
  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 struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
  62 {
  63         return &container_of(ctrl->handler, struct adv7343_state, hdl)->sd;
  64 }
  65
  66 static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value)
  67 {
  68         struct i2c_client *client = v4l2_get_subdevdata(sd);
  69
  70         return i2c_smbus_write_byte_data(client, reg, value);
  71 }
  72
  73 static const u8 adv7343_init_reg_val[] = {
  74         ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
  75         ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,
  76
  77         ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
  78         ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
  79         ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
  80         ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
  81         ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
  82         ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
  83         ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,
  84
  85         ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
  86         ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
  87         ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
  88         ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
  89         ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
  90         ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
  91         ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
  92         ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,
  93
  94         ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
  95         ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
  96         ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT,
  97 };
  98
  99 /*
 100  *                          2^32
 101  * FSC(reg) =  FSC (HZ) * --------
 102  *                        27000000
 103  */
 104 static const struct adv7343_std_info stdinfo[] = {
 105         {
 106                 /* FSC(Hz) = 3,579,545.45 Hz */
 107                 SD_STD_NTSC, 569408542, V4L2_STD_NTSC,
 108         }, {
 109                 /* FSC(Hz) = 3,575,611.00 Hz */
 110                 SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M,
 111         }, {
 112                 /* FSC(Hz) = 3,582,056.00 */
 113                 SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc,
 114         }, {
 115                 /* FSC(Hz) = 4,433,618.75 Hz */
 116                 SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N,
 117         }, {
 118                 /* FSC(Hz) = 4,433,618.75 Hz */
 119                 SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL,
 120         }, {
 121                 /* FSC(Hz) = 4,433,618.75 Hz */
 122                 SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443,
 123         }, {
 124                 /* FSC(Hz) = 4,433,618.75 Hz */
 125                 SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60,
 126         },
 127 };
 128
 129 static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
 130 {
 131         struct adv7343_state *state = to_state(sd);
 132         struct adv7343_std_info *std_info;
 133         int output_idx, num_std;
 134         char *fsc_ptr;
 135         u8 reg, val;
 136         int err = 0;
 137         int i = 0;
 138
 139         output_idx = state->output;
 140
 141         std_info = (struct adv7343_std_info *)stdinfo;
 142         num_std = ARRAY_SIZE(stdinfo);
 143
 144         for (i = 0; i < num_std; i++) {
 145                 if (std_info[i].stdid & std)
 146                         break;
 147         }
 148
 149         if (i == num_std) {
 150                 v4l2_dbg(1, debug, sd,
 151                                 "Invalid std or std is not supported: %llx\n",
 152                                                 (unsigned long long)std);
 153                 return -EINVAL;
 154         }
 155
 156         /* Set the standard */
 157         val = state->reg80 & (~(SD_STD_MASK));
 158         val |= std_info[i].standard_val3;
 159         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
 160         if (err < 0)
 161                 goto setstd_exit;
 162
 163         state->reg80 = val;
 164
 165         /* Configure the input mode register */
 166         val = state->reg01 & (~((u8) INPUT_MODE_MASK));
 167         val |= SD_INPUT_MODE;
 168         err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
 169         if (err < 0)
 170                 goto setstd_exit;
 171
 172         state->reg01 = val;
 173
 174         /* Program the sub carrier frequency registers */
 175         fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
 176         reg = ADV7343_FSC_REG0;
 177         for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
 178                 err = adv7343_write(sd, reg, *fsc_ptr);
 179                 if (err < 0)
 180                         goto setstd_exit;
 181         }
 182
 183         val = state->reg80;
 184
 185         /* Filter settings */
 186         if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
 187                 val &= 0x03;
 188         else if (std & ~V4L2_STD_SECAM)
 189                 val |= 0x04;
 190
 191         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
 192         if (err < 0)
 193                 goto setstd_exit;
 194
 195         state->reg80 = val;
 196
 197 setstd_exit:
 198         if (err != 0)
 199                 v4l2_err(sd, "Error setting std, write failed\n");
 200
 201         return err;
 202 }
 203
 204 static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
 205 {
 206         struct adv7343_state *state = to_state(sd);
 207         unsigned char val;
 208         int err = 0;
 209
 210         if (output_type > ADV7343_SVIDEO_ID) {
 211                 v4l2_dbg(1, debug, sd,
 212                         "Invalid output type or output type not supported:%d\n",
 213                                                                 output_type);
 214                 return -EINVAL;
 215         }
 216
 217         /* Enable Appropriate DAC */
 218         val = state->reg00 & 0x03;
 219
 220         if (output_type == ADV7343_COMPOSITE_ID)
 221                 val |= ADV7343_COMPOSITE_POWER_VALUE;
 222         else if (output_type == ADV7343_COMPONENT_ID)
 223                 val |= ADV7343_COMPONENT_POWER_VALUE;
 224         else
 225                 val |= ADV7343_SVIDEO_POWER_VALUE;
 226
 227         err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
 228         if (err < 0)
 229                 goto setoutput_exit;
 230
 231         state->reg00 = val;
 232
 233         /* Enable YUV output */
 234         val = state->reg02 | YUV_OUTPUT_SELECT;
 235         err = adv7343_write(sd, ADV7343_MODE_REG0, val);
 236         if (err < 0)
 237                 goto setoutput_exit;
 238
 239         state->reg02 = val;
 240
 241         /* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
 242         val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
 243         err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
 244         if (err < 0)
 245                 goto setoutput_exit;
 246
 247         state->reg82 = val;
 248
 249         /* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
 250          * zero */
 251         val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
 252         err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
 253         if (err < 0)
 254                 goto setoutput_exit;
 255
 256         state->reg35 = val;
 257
 258 setoutput_exit:
 259         if (err != 0)
 260                 v4l2_err(sd, "Error setting output, write failed\n");
 261
 262         return err;
 263 }
 264
 265 static int adv7343_log_status(struct v4l2_subdev *sd)
 266 {
 267         struct adv7343_state *state = to_state(sd);
 268
 269         v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
 270         v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
 271                         ((state->output == 1) ? "Component" : "S-Video"));
 272         return 0;
 273 }
 274
 275 static int adv7343_s_ctrl(struct v4l2_ctrl *ctrl)
 276 {
 277         struct v4l2_subdev *sd = to_sd(ctrl);
 278
 279         switch (ctrl->id) {
 280         case V4L2_CID_BRIGHTNESS:
 281                 return adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
 282                                         ctrl->val);
 283
 284         case V4L2_CID_HUE:
 285                 return adv7343_write(sd, ADV7343_SD_HUE_REG, ctrl->val);
 286
 287         case V4L2_CID_GAIN:
 288                 return adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, ctrl->val);
 289         }
 290         return -EINVAL;
 291 }
 292
 293 static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
 294                                 struct v4l2_dbg_chip_ident *chip)
 295 {
 296         struct i2c_client *client = v4l2_get_subdevdata(sd);
 297
 298         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
 299 }
 300
 301 static const struct v4l2_ctrl_ops adv7343_ctrl_ops = {
 302         .s_ctrl = adv7343_s_ctrl,
 303 };
 304
 305 static const struct v4l2_subdev_core_ops adv7343_core_ops = {
 306         .log_status = adv7343_log_status,
 307         .g_chip_ident = adv7343_g_chip_ident,
 308         .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 309         .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 310         .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
 311         .g_ctrl = v4l2_subdev_g_ctrl,
 312         .s_ctrl = v4l2_subdev_s_ctrl,
 313         .queryctrl = v4l2_subdev_queryctrl,
 314         .querymenu = v4l2_subdev_querymenu,
 315 };
 316
 317 static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
 318 {
 319         struct adv7343_state *state = to_state(sd);
 320         int err = 0;
 321
 322         if (state->std == std)
 323                 return 0;
 324
 325         err = adv7343_setstd(sd, std);
 326         if (!err)
 327                 state->std = std;
 328
 329         return err;
 330 }
 331
 332 static int adv7343_s_routing(struct v4l2_subdev *sd,
 333                 u32 input, u32 output, u32 config)
 334 {
 335         struct adv7343_state *state = to_state(sd);
 336         int err = 0;
 337
 338         if (state->output == output)
 339                 return 0;
 340
 341         err = adv7343_setoutput(sd, output);
 342         if (!err)
 343                 state->output = output;
 344
 345         return err;
 346 }
 347
 348 static const struct v4l2_subdev_video_ops adv7343_video_ops = {
 349         .s_std_output   = adv7343_s_std_output,
 350         .s_routing      = adv7343_s_routing,
 351 };
 352
 353 static const struct v4l2_subdev_ops adv7343_ops = {
 354         .core   = &adv7343_core_ops,
 355         .video  = &adv7343_video_ops,
 356 };
 357
 358 static int adv7343_initialize(struct v4l2_subdev *sd)
 359 {
 360         struct adv7343_state *state = to_state(sd);
 361         int err = 0;
 362         int i;
 363
 364         for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {
 365
 366                 err = adv7343_write(sd, adv7343_init_reg_val[i],
 367                                         adv7343_init_reg_val[i+1]);
 368                 if (err) {
 369                         v4l2_err(sd, "Error initializing\n");
 370                         return err;
 371                 }
 372         }
 373
 374         /* Configure for default video standard */
 375         err = adv7343_setoutput(sd, state->output);
 376         if (err < 0) {
 377                 v4l2_err(sd, "Error setting output during init\n");
 378                 return -EINVAL;
 379         }
 380
 381         err = adv7343_setstd(sd, state->std);
 382         if (err < 0) {
 383                 v4l2_err(sd, "Error setting std during init\n");
 384                 return -EINVAL;
 385         }
 386
 387         return err;
 388 }
 389
 390 static int adv7343_probe(struct i2c_client *client,
 391                                 const struct i2c_device_id *id)
 392 {
 393         struct adv7343_state *state;
 394         int err;
 395
 396         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 397                 return -ENODEV;
 398
 399         v4l_info(client, "chip found @ 0x%x (%s)\n",
 400                         client->addr << 1, client->adapter->name);
 401
 402         state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
 403         if (state == NULL)
 404                 return -ENOMEM;
 405
 406         state->reg00    = 0x80;
 407         state->reg01    = 0x00;
 408         state->reg02    = 0x20;
 409         state->reg35    = 0x00;
 410         state->reg80    = ADV7343_SD_MODE_REG1_DEFAULT;
 411         state->reg82    = ADV7343_SD_MODE_REG2_DEFAULT;
 412
 413         state->output = ADV7343_COMPOSITE_ID;
 414         state->std = V4L2_STD_NTSC;
 415
 416         v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
 417
 418         v4l2_ctrl_handler_init(&state->hdl, 2);
 419         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 420                         V4L2_CID_BRIGHTNESS, ADV7343_BRIGHTNESS_MIN,
 421                                              ADV7343_BRIGHTNESS_MAX, 1,
 422                                              ADV7343_BRIGHTNESS_DEF);
 423         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 424                         V4L2_CID_HUE, ADV7343_HUE_MIN,
 425                                       ADV7343_HUE_MAX, 1,
 426                                       ADV7343_HUE_DEF);
 427         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 428                         V4L2_CID_GAIN, ADV7343_GAIN_MIN,
 429                                        ADV7343_GAIN_MAX, 1,
 430                                        ADV7343_GAIN_DEF);
 431         state->sd.ctrl_handler = &state->hdl;
 432         if (state->hdl.error) {
 433                 int err = state->hdl.error;
 434
 435                 v4l2_ctrl_handler_free(&state->hdl);
 436                 kfree(state);
 437                 return err;
 438         }
 439         v4l2_ctrl_handler_setup(&state->hdl);
 440
 441         err = adv7343_initialize(&state->sd);
 442         if (err) {
 443                 v4l2_ctrl_handler_free(&state->hdl);
 444                 kfree(state);
 445         }
 446         return err;
 447 }
 448
 449 static int adv7343_remove(struct i2c_client *client)
 450 {
 451         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 452         struct adv7343_state *state = to_state(sd);
 453
 454         v4l2_device_unregister_subdev(sd);
 455         v4l2_ctrl_handler_free(&state->hdl);
 456         kfree(state);
 457
 458         return 0;
 459 }
 460
 461 static const struct i2c_device_id adv7343_id[] = {
 462         {"adv7343", 0},
 463         {},
 464 };
 465
 466 MODULE_DEVICE_TABLE(i2c, adv7343_id);
 467
 468 static struct i2c_driver adv7343_driver = {
 469         .driver = {
 470                 .owner  = THIS_MODULE,
 471                 .name   = "adv7343",
 472         },
 473         .probe          = adv7343_probe,
 474         .remove         = adv7343_remove,
 475         .id_table       = adv7343_id,
 476 };
 477
 478 static __init int init_adv7343(void)
 479 {
 480         return i2c_add_driver(&adv7343_driver);
 481 }
 482
 483 static __exit void exit_adv7343(void)
 484 {
 485         i2c_del_driver(&adv7343_driver);
 486 }
 487
 488 module_init(init_adv7343);
 489 module_exit(exit_adv7343);