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 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); 533