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 num_std;
 134         char *fsc_ptr;
 135         u8 reg, val;
 136         int err = 0;
 137         int i = 0;
 138
 139         std_info = (struct adv7343_std_info *)stdinfo;
 140         num_std = ARRAY_SIZE(stdinfo);
 141
 142         for (i = 0; i < num_std; i++) {
 143                 if (std_info[i].stdid & std)
 144                         break;
 145         }
 146
 147         if (i == num_std) {
 148                 v4l2_dbg(1, debug, sd,
 149                                 "Invalid std or std is not supported: %llx\n",
 150                                                 (unsigned long long)std);
 151                 return -EINVAL;
 152         }
 153
 154         /* Set the standard */
 155         val = state->reg80 & (~(SD_STD_MASK));
 156         val |= std_info[i].standard_val3;
 157         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
 158         if (err < 0)
 159                 goto setstd_exit;
 160
 161         state->reg80 = val;
 162
 163         /* Configure the input mode register */
 164         val = state->reg01 & (~((u8) INPUT_MODE_MASK));
 165         val |= SD_INPUT_MODE;
 166         err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
 167         if (err < 0)
 168                 goto setstd_exit;
 169
 170         state->reg01 = val;
 171
 172         /* Program the sub carrier frequency registers */
 173         fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
 174         reg = ADV7343_FSC_REG0;
 175         for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
 176                 err = adv7343_write(sd, reg, *fsc_ptr);
 177                 if (err < 0)
 178                         goto setstd_exit;
 179         }
 180
 181         val = state->reg80;
 182
 183         /* Filter settings */
 184         if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
 185                 val &= 0x03;
 186         else if (std & ~V4L2_STD_SECAM)
 187                 val |= 0x04;
 188
 189         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
 190         if (err < 0)
 191                 goto setstd_exit;
 192
 193         state->reg80 = val;
 194
 195 setstd_exit:
 196         if (err != 0)
 197                 v4l2_err(sd, "Error setting std, write failed\n");
 198
 199         return err;
 200 }
 201
 202 static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
 203 {
 204         struct adv7343_state *state = to_state(sd);
 205         unsigned char val;
 206         int err = 0;
 207
 208         if (output_type > ADV7343_SVIDEO_ID) {
 209                 v4l2_dbg(1, debug, sd,
 210                         "Invalid output type or output type not supported:%d\n",
 211                                                                 output_type);
 212                 return -EINVAL;
 213         }
 214
 215         /* Enable Appropriate DAC */
 216         val = state->reg00 & 0x03;
 217
 218         if (output_type == ADV7343_COMPOSITE_ID)
 219                 val |= ADV7343_COMPOSITE_POWER_VALUE;
 220         else if (output_type == ADV7343_COMPONENT_ID)
 221                 val |= ADV7343_COMPONENT_POWER_VALUE;
 222         else
 223                 val |= ADV7343_SVIDEO_POWER_VALUE;
 224
 225         err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
 226         if (err < 0)
 227                 goto setoutput_exit;
 228
 229         state->reg00 = val;
 230
 231         /* Enable YUV output */
 232         val = state->reg02 | YUV_OUTPUT_SELECT;
 233         err = adv7343_write(sd, ADV7343_MODE_REG0, val);
 234         if (err < 0)
 235                 goto setoutput_exit;
 236
 237         state->reg02 = val;
 238
 239         /* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
 240         val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
 241         err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
 242         if (err < 0)
 243                 goto setoutput_exit;
 244
 245         state->reg82 = val;
 246
 247         /* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
 248          * zero */
 249         val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
 250         err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
 251         if (err < 0)
 252                 goto setoutput_exit;
 253
 254         state->reg35 = val;
 255
 256 setoutput_exit:
 257         if (err != 0)
 258                 v4l2_err(sd, "Error setting output, write failed\n");
 259
 260         return err;
 261 }
 262
 263 static int adv7343_log_status(struct v4l2_subdev *sd)
 264 {
 265         struct adv7343_state *state = to_state(sd);
 266
 267         v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
 268         v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
 269                         ((state->output == 1) ? "Component" : "S-Video"));
 270         return 0;
 271 }
 272
 273 static int adv7343_s_ctrl(struct v4l2_ctrl *ctrl)
 274 {
 275         struct v4l2_subdev *sd = to_sd(ctrl);
 276
 277         switch (ctrl->id) {
 278         case V4L2_CID_BRIGHTNESS:
 279                 return adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
 280                                         ctrl->val);
 281
 282         case V4L2_CID_HUE:
 283                 return adv7343_write(sd, ADV7343_SD_HUE_REG, ctrl->val);
 284
 285         case V4L2_CID_GAIN:
 286                 return adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, ctrl->val);
 287         }
 288         return -EINVAL;
 289 }
 290
 291 static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
 292                                 struct v4l2_dbg_chip_ident *chip)
 293 {
 294         struct i2c_client *client = v4l2_get_subdevdata(sd);
 295
 296         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
 297 }
 298
 299 static const struct v4l2_ctrl_ops adv7343_ctrl_ops = {
 300         .s_ctrl = adv7343_s_ctrl,
 301 };
 302
 303 static const struct v4l2_subdev_core_ops adv7343_core_ops = {
 304         .log_status = adv7343_log_status,
 305         .g_chip_ident = adv7343_g_chip_ident,
 306         .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
 307         .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
 308         .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
 309         .g_ctrl = v4l2_subdev_g_ctrl,
 310         .s_ctrl = v4l2_subdev_s_ctrl,
 311         .queryctrl = v4l2_subdev_queryctrl,
 312         .querymenu = v4l2_subdev_querymenu,
 313 };
 314
 315 static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
 316 {
 317         struct adv7343_state *state = to_state(sd);
 318         int err = 0;
 319
 320         if (state->std == std)
 321                 return 0;
 322
 323         err = adv7343_setstd(sd, std);
 324         if (!err)
 325                 state->std = std;
 326
 327         return err;
 328 }
 329
 330 static int adv7343_s_routing(struct v4l2_subdev *sd,
 331                 u32 input, u32 output, u32 config)
 332 {
 333         struct adv7343_state *state = to_state(sd);
 334         int err = 0;
 335
 336         if (state->output == output)
 337                 return 0;
 338
 339         err = adv7343_setoutput(sd, output);
 340         if (!err)
 341                 state->output = output;
 342
 343         return err;
 344 }
 345
 346 static const struct v4l2_subdev_video_ops adv7343_video_ops = {
 347         .s_std_output   = adv7343_s_std_output,
 348         .s_routing      = adv7343_s_routing,
 349 };
 350
 351 static const struct v4l2_subdev_ops adv7343_ops = {
 352         .core   = &adv7343_core_ops,
 353         .video  = &adv7343_video_ops,
 354 };
 355
 356 static int adv7343_initialize(struct v4l2_subdev *sd)
 357 {
 358         struct adv7343_state *state = to_state(sd);
 359         int err = 0;
 360         int i;
 361
 362         for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {
 363
 364                 err = adv7343_write(sd, adv7343_init_reg_val[i],
 365                                         adv7343_init_reg_val[i+1]);
 366                 if (err) {
 367                         v4l2_err(sd, "Error initializing\n");
 368                         return err;
 369                 }
 370         }
 371
 372         /* Configure for default video standard */
 373         err = adv7343_setoutput(sd, state->output);
 374         if (err < 0) {
 375                 v4l2_err(sd, "Error setting output during init\n");
 376                 return -EINVAL;
 377         }
 378
 379         err = adv7343_setstd(sd, state->std);
 380         if (err < 0) {
 381                 v4l2_err(sd, "Error setting std during init\n");
 382                 return -EINVAL;
 383         }
 384
 385         return err;
 386 }
 387
 388 static int adv7343_probe(struct i2c_client *client,
 389                                 const struct i2c_device_id *id)
 390 {
 391         struct adv7343_state *state;
 392         int err;
 393
 394         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
 395                 return -ENODEV;
 396
 397         v4l_info(client, "chip found @ 0x%x (%s)\n",
 398                         client->addr << 1, client->adapter->name);
 399
 400         state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
 401         if (state == NULL)
 402                 return -ENOMEM;
 403
 404         state->reg00    = 0x80;
 405         state->reg01    = 0x00;
 406         state->reg02    = 0x20;
 407         state->reg35    = 0x00;
 408         state->reg80    = ADV7343_SD_MODE_REG1_DEFAULT;
 409         state->reg82    = ADV7343_SD_MODE_REG2_DEFAULT;
 410
 411         state->output = ADV7343_COMPOSITE_ID;
 412         state->std = V4L2_STD_NTSC;
 413
 414         v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
 415
 416         v4l2_ctrl_handler_init(&state->hdl, 2);
 417         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 418                         V4L2_CID_BRIGHTNESS, ADV7343_BRIGHTNESS_MIN,
 419                                              ADV7343_BRIGHTNESS_MAX, 1,
 420                                              ADV7343_BRIGHTNESS_DEF);
 421         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 422                         V4L2_CID_HUE, ADV7343_HUE_MIN,
 423                                       ADV7343_HUE_MAX, 1,
 424                                       ADV7343_HUE_DEF);
 425         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
 426                         V4L2_CID_GAIN, ADV7343_GAIN_MIN,
 427                                        ADV7343_GAIN_MAX, 1,
 428                                        ADV7343_GAIN_DEF);
 429         state->sd.ctrl_handler = &state->hdl;
 430         if (state->hdl.error) {
 431                 int err = state->hdl.error;
 432
 433                 v4l2_ctrl_handler_free(&state->hdl);
 434                 kfree(state);
 435                 return err;
 436         }
 437         v4l2_ctrl_handler_setup(&state->hdl);
 438
 439         err = adv7343_initialize(&state->sd);
 440         if (err) {
 441                 v4l2_ctrl_handler_free(&state->hdl);
 442                 kfree(state);
 443         }
 444         return err;
 445 }
 446
 447 static int adv7343_remove(struct i2c_client *client)
 448 {
 449         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 450         struct adv7343_state *state = to_state(sd);
 451
 452         v4l2_device_unregister_subdev(sd);
 453         v4l2_ctrl_handler_free(&state->hdl);
 454         kfree(state);
 455
 456         return 0;
 457 }
 458
 459 static const struct i2c_device_id adv7343_id[] = {
 460         {"adv7343", 0},
 461         {},
 462 };
 463
 464 MODULE_DEVICE_TABLE(i2c, adv7343_id);
 465
 466 static struct i2c_driver adv7343_driver = {
 467         .driver = {
 468                 .owner  = THIS_MODULE,
 469                 .name   = "adv7343",
 470         },
 471         .probe          = adv7343_probe,
 472         .remove         = adv7343_remove,
 473         .id_table       = adv7343_id,
 474 };
 475
 476 module_i2c_driver(adv7343_driver);