linux/drivers/media/i2c/adv7343.c
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   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/i2c/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
  38MODULE_DESCRIPTION("ADV7343 video encoder driver");
  39MODULE_LICENSE("GPL");
  40
  41static int debug;
  42module_param(debug, int, 0644);
  43MODULE_PARM_DESC(debug, "Debug level 0-1");
  44
  45struct 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
  59static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
  60{
  61        return container_of(sd, struct adv7343_state, sd);
  62}
  63
  64static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
  65{
  66        return &container_of(ctrl->handler, struct adv7343_state, hdl)->sd;
  67}
  68
  69static 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
  76static 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 */
 107static 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
 132static 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
 198setstd_exit:
 199        if (err != 0)
 200                v4l2_err(sd, "Error setting std, write failed\n");
 201
 202        return err;
 203}
 204
 205static 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
 281setoutput_exit:
 282        if (err != 0)
 283                v4l2_err(sd, "Error setting output, write failed\n");
 284
 285        return err;
 286}
 287
 288static 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
 298static 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
 316static const struct v4l2_ctrl_ops adv7343_ctrl_ops = {
 317        .s_ctrl = adv7343_s_ctrl,
 318};
 319
 320static const struct v4l2_subdev_core_ops adv7343_core_ops = {
 321        .log_status = adv7343_log_status,
 322};
 323
 324static 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
 339static 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
 355static 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
 360static const struct v4l2_subdev_ops adv7343_ops = {
 361        .core   = &adv7343_core_ops,
 362        .video  = &adv7343_video_ops,
 363};
 364
 365static 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
 397static struct adv7343_platform_data *
 398adv7343_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
 426done:
 427        of_node_put(np);
 428        return pdata;
 429}
 430
 431static 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
 489done:
 490        if (err < 0)
 491                v4l2_ctrl_handler_free(&state->hdl);
 492
 493        return err;
 494}
 495
 496static 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
 507static const struct i2c_device_id adv7343_id[] = {
 508        {"adv7343", 0},
 509        {},
 510};
 511
 512MODULE_DEVICE_TABLE(i2c, adv7343_id);
 513
 514#if IS_ENABLED(CONFIG_OF)
 515static const struct of_device_id adv7343_of_match[] = {
 516        {.compatible = "adi,adv7343", },
 517        { /* sentinel */ },
 518};
 519MODULE_DEVICE_TABLE(of, adv7343_of_match);
 520#endif
 521
 522static 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
 532module_i2c_driver(adv7343_driver);
 533