1 /* 2 * adv7393 - ADV7393 Video Encoder Driver 3 * 4 * The encoder hardware does not support SECAM. 5 * 6 * Copyright (C) 2010-2012 ADVANSEE - http://www.advansee.com/ 7 * Benoît Thébaudeau <benoit.thebaudeau@advansee.com> 8 * 9 * Based on ADV7343 driver, 10 * 11 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License as 15 * published by the Free Software Foundation version 2. 16 * 17 * This program is distributed .as is. WITHOUT ANY WARRANTY of any 18 * kind, whether express or implied; without even the implied warranty 19 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 */ 22 23 #include <linux/kernel.h> 24 #include <linux/init.h> 25 #include <linux/ctype.h> 26 #include <linux/slab.h> 27 #include <linux/i2c.h> 28 #include <linux/device.h> 29 #include <linux/delay.h> 30 #include <linux/module.h> 31 #include <linux/videodev2.h> 32 #include <linux/uaccess.h> 33 34 #include <media/i2c/adv7393.h> 35 #include <media/v4l2-device.h> 36 #include <media/v4l2-ctrls.h> 37 38 #include "adv7393_regs.h" 39 40 MODULE_DESCRIPTION("ADV7393 video encoder driver"); 41 MODULE_LICENSE("GPL"); 42 43 static bool debug; 44 module_param(debug, bool, 0644); 45 MODULE_PARM_DESC(debug, "Debug level 0-1"); 46 47 struct adv7393_state { 48 struct v4l2_subdev sd; 49 struct v4l2_ctrl_handler hdl; 50 u8 reg00; 51 u8 reg01; 52 u8 reg02; 53 u8 reg35; 54 u8 reg80; 55 u8 reg82; 56 u32 output; 57 v4l2_std_id std; 58 }; 59 60 static inline struct adv7393_state *to_state(struct v4l2_subdev *sd) 61 { 62 return container_of(sd, struct adv7393_state, sd); 63 } 64 65 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) 66 { 67 return &container_of(ctrl->handler, struct adv7393_state, hdl)->sd; 68 } 69 70 static inline int adv7393_write(struct v4l2_subdev *sd, u8 reg, u8 value) 71 { 72 struct i2c_client *client = v4l2_get_subdevdata(sd); 73 74 return i2c_smbus_write_byte_data(client, reg, value); 75 } 76 77 static const u8 adv7393_init_reg_val[] = { 78 ADV7393_SOFT_RESET, ADV7393_SOFT_RESET_DEFAULT, 79 ADV7393_POWER_MODE_REG, ADV7393_POWER_MODE_REG_DEFAULT, 80 81 ADV7393_HD_MODE_REG1, ADV7393_HD_MODE_REG1_DEFAULT, 82 ADV7393_HD_MODE_REG2, ADV7393_HD_MODE_REG2_DEFAULT, 83 ADV7393_HD_MODE_REG3, ADV7393_HD_MODE_REG3_DEFAULT, 84 ADV7393_HD_MODE_REG4, ADV7393_HD_MODE_REG4_DEFAULT, 85 ADV7393_HD_MODE_REG5, ADV7393_HD_MODE_REG5_DEFAULT, 86 ADV7393_HD_MODE_REG6, ADV7393_HD_MODE_REG6_DEFAULT, 87 ADV7393_HD_MODE_REG7, ADV7393_HD_MODE_REG7_DEFAULT, 88 89 ADV7393_SD_MODE_REG1, ADV7393_SD_MODE_REG1_DEFAULT, 90 ADV7393_SD_MODE_REG2, ADV7393_SD_MODE_REG2_DEFAULT, 91 ADV7393_SD_MODE_REG3, ADV7393_SD_MODE_REG3_DEFAULT, 92 ADV7393_SD_MODE_REG4, ADV7393_SD_MODE_REG4_DEFAULT, 93 ADV7393_SD_MODE_REG5, ADV7393_SD_MODE_REG5_DEFAULT, 94 ADV7393_SD_MODE_REG6, ADV7393_SD_MODE_REG6_DEFAULT, 95 ADV7393_SD_MODE_REG7, ADV7393_SD_MODE_REG7_DEFAULT, 96 ADV7393_SD_MODE_REG8, ADV7393_SD_MODE_REG8_DEFAULT, 97 98 ADV7393_SD_TIMING_REG0, ADV7393_SD_TIMING_REG0_DEFAULT, 99 100 ADV7393_SD_HUE_ADJUST, ADV7393_SD_HUE_ADJUST_DEFAULT, 101 ADV7393_SD_CGMS_WSS0, ADV7393_SD_CGMS_WSS0_DEFAULT, 102 ADV7393_SD_BRIGHTNESS_WSS, ADV7393_SD_BRIGHTNESS_WSS_DEFAULT, 103 }; 104 105 /* 106 * 2^32 107 * FSC(reg) = FSC (HZ) * -------- 108 * 27000000 109 */ 110 static const struct adv7393_std_info stdinfo[] = { 111 { 112 /* FSC(Hz) = 4,433,618.75 Hz */ 113 SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443, 114 }, { 115 /* FSC(Hz) = 3,579,545.45 Hz */ 116 SD_STD_NTSC, 569408542, V4L2_STD_NTSC, 117 }, { 118 /* FSC(Hz) = 3,575,611.00 Hz */ 119 SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M, 120 }, { 121 /* FSC(Hz) = 3,582,056.00 Hz */ 122 SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc, 123 }, { 124 /* FSC(Hz) = 4,433,618.75 Hz */ 125 SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N, 126 }, { 127 /* FSC(Hz) = 4,433,618.75 Hz */ 128 SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60, 129 }, { 130 /* FSC(Hz) = 4,433,618.75 Hz */ 131 SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL, 132 }, 133 }; 134 135 static int adv7393_setstd(struct v4l2_subdev *sd, v4l2_std_id std) 136 { 137 struct adv7393_state *state = to_state(sd); 138 const struct adv7393_std_info *std_info; 139 int num_std; 140 u8 reg; 141 u32 val; 142 int err = 0; 143 int i; 144 145 num_std = ARRAY_SIZE(stdinfo); 146 147 for (i = 0; i < num_std; i++) { 148 if (stdinfo[i].stdid & std) 149 break; 150 } 151 152 if (i == num_std) { 153 v4l2_dbg(1, debug, sd, 154 "Invalid std or std is not supported: %llx\n", 155 (unsigned long long)std); 156 return -EINVAL; 157 } 158 159 std_info = &stdinfo[i]; 160 161 /* Set the standard */ 162 val = state->reg80 & ~SD_STD_MASK; 163 val |= std_info->standard_val3; 164 err = adv7393_write(sd, ADV7393_SD_MODE_REG1, val); 165 if (err < 0) 166 goto setstd_exit; 167 168 state->reg80 = val; 169 170 /* Configure the input mode register */ 171 val = state->reg01 & ~INPUT_MODE_MASK; 172 val |= SD_INPUT_MODE; 173 err = adv7393_write(sd, ADV7393_MODE_SELECT_REG, val); 174 if (err < 0) 175 goto setstd_exit; 176 177 state->reg01 = val; 178 179 /* Program the sub carrier frequency registers */ 180 val = std_info->fsc_val; 181 for (reg = ADV7393_FSC_REG0; reg <= ADV7393_FSC_REG3; reg++) { 182 err = adv7393_write(sd, reg, val); 183 if (err < 0) 184 goto setstd_exit; 185 val >>= 8; 186 } 187 188 val = state->reg82; 189 190 /* Pedestal settings */ 191 if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443)) 192 val |= SD_PEDESTAL_EN; 193 else 194 val &= SD_PEDESTAL_DI; 195 196 err = adv7393_write(sd, ADV7393_SD_MODE_REG2, val); 197 if (err < 0) 198 goto setstd_exit; 199 200 state->reg82 = val; 201 202 setstd_exit: 203 if (err != 0) 204 v4l2_err(sd, "Error setting std, write failed\n"); 205 206 return err; 207 } 208 209 static int adv7393_setoutput(struct v4l2_subdev *sd, u32 output_type) 210 { 211 struct adv7393_state *state = to_state(sd); 212 u8 val; 213 int err = 0; 214 215 if (output_type > ADV7393_SVIDEO_ID) { 216 v4l2_dbg(1, debug, sd, 217 "Invalid output type or output type not supported:%d\n", 218 output_type); 219 return -EINVAL; 220 } 221 222 /* Enable Appropriate DAC */ 223 val = state->reg00 & 0x03; 224 225 if (output_type == ADV7393_COMPOSITE_ID) 226 val |= ADV7393_COMPOSITE_POWER_VALUE; 227 else if (output_type == ADV7393_COMPONENT_ID) 228 val |= ADV7393_COMPONENT_POWER_VALUE; 229 else 230 val |= ADV7393_SVIDEO_POWER_VALUE; 231 232 err = adv7393_write(sd, ADV7393_POWER_MODE_REG, val); 233 if (err < 0) 234 goto setoutput_exit; 235 236 state->reg00 = val; 237 238 /* Enable YUV output */ 239 val = state->reg02 | YUV_OUTPUT_SELECT; 240 err = adv7393_write(sd, ADV7393_MODE_REG0, val); 241 if (err < 0) 242 goto setoutput_exit; 243 244 state->reg02 = val; 245 246 /* configure SD DAC Output 1 bit */ 247 val = state->reg82; 248 if (output_type == ADV7393_COMPONENT_ID) 249 val &= SD_DAC_OUT1_DI; 250 else 251 val |= SD_DAC_OUT1_EN; 252 err = adv7393_write(sd, ADV7393_SD_MODE_REG2, val); 253 if (err < 0) 254 goto setoutput_exit; 255 256 state->reg82 = val; 257 258 /* configure ED/HD Color DAC Swap bit to zero */ 259 val = state->reg35 & HD_DAC_SWAP_DI; 260 err = adv7393_write(sd, ADV7393_HD_MODE_REG6, val); 261 if (err < 0) 262 goto setoutput_exit; 263 264 state->reg35 = val; 265 266 setoutput_exit: 267 if (err != 0) 268 v4l2_err(sd, "Error setting output, write failed\n"); 269 270 return err; 271 } 272 273 static int adv7393_log_status(struct v4l2_subdev *sd) 274 { 275 struct adv7393_state *state = to_state(sd); 276 277 v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std); 278 v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" : 279 ((state->output == 1) ? "Component" : "S-Video")); 280 return 0; 281 } 282 283 static int adv7393_s_ctrl(struct v4l2_ctrl *ctrl) 284 { 285 struct v4l2_subdev *sd = to_sd(ctrl); 286 287 switch (ctrl->id) { 288 case V4L2_CID_BRIGHTNESS: 289 return adv7393_write(sd, ADV7393_SD_BRIGHTNESS_WSS, 290 ctrl->val & SD_BRIGHTNESS_VALUE_MASK); 291 292 case V4L2_CID_HUE: 293 return adv7393_write(sd, ADV7393_SD_HUE_ADJUST, 294 ctrl->val - ADV7393_HUE_MIN); 295 296 case V4L2_CID_GAIN: 297 return adv7393_write(sd, ADV7393_DAC123_OUTPUT_LEVEL, 298 ctrl->val); 299 } 300 return -EINVAL; 301 } 302 303 static const struct v4l2_ctrl_ops adv7393_ctrl_ops = { 304 .s_ctrl = adv7393_s_ctrl, 305 }; 306 307 static const struct v4l2_subdev_core_ops adv7393_core_ops = { 308 .log_status = adv7393_log_status, 309 }; 310 311 static int adv7393_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) 312 { 313 struct adv7393_state *state = to_state(sd); 314 int err = 0; 315 316 if (state->std == std) 317 return 0; 318 319 err = adv7393_setstd(sd, std); 320 if (!err) 321 state->std = std; 322 323 return err; 324 } 325 326 static int adv7393_s_routing(struct v4l2_subdev *sd, 327 u32 input, u32 output, u32 config) 328 { 329 struct adv7393_state *state = to_state(sd); 330 int err = 0; 331 332 if (state->output == output) 333 return 0; 334 335 err = adv7393_setoutput(sd, output); 336 if (!err) 337 state->output = output; 338 339 return err; 340 } 341 342 static const struct v4l2_subdev_video_ops adv7393_video_ops = { 343 .s_std_output = adv7393_s_std_output, 344 .s_routing = adv7393_s_routing, 345 }; 346 347 static const struct v4l2_subdev_ops adv7393_ops = { 348 .core = &adv7393_core_ops, 349 .video = &adv7393_video_ops, 350 }; 351 352 static int adv7393_initialize(struct v4l2_subdev *sd) 353 { 354 struct adv7393_state *state = to_state(sd); 355 int err = 0; 356 int i; 357 358 for (i = 0; i < ARRAY_SIZE(adv7393_init_reg_val); i += 2) { 359 360 err = adv7393_write(sd, adv7393_init_reg_val[i], 361 adv7393_init_reg_val[i+1]); 362 if (err) { 363 v4l2_err(sd, "Error initializing\n"); 364 return err; 365 } 366 } 367 368 /* Configure for default video standard */ 369 err = adv7393_setoutput(sd, state->output); 370 if (err < 0) { 371 v4l2_err(sd, "Error setting output during init\n"); 372 return -EINVAL; 373 } 374 375 err = adv7393_setstd(sd, state->std); 376 if (err < 0) { 377 v4l2_err(sd, "Error setting std during init\n"); 378 return -EINVAL; 379 } 380 381 return err; 382 } 383 384 static int adv7393_probe(struct i2c_client *client, 385 const struct i2c_device_id *id) 386 { 387 struct adv7393_state *state; 388 int err; 389 390 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 391 return -ENODEV; 392 393 v4l_info(client, "chip found @ 0x%x (%s)\n", 394 client->addr << 1, client->adapter->name); 395 396 state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); 397 if (state == NULL) 398 return -ENOMEM; 399 400 state->reg00 = ADV7393_POWER_MODE_REG_DEFAULT; 401 state->reg01 = 0x00; 402 state->reg02 = 0x20; 403 state->reg35 = ADV7393_HD_MODE_REG6_DEFAULT; 404 state->reg80 = ADV7393_SD_MODE_REG1_DEFAULT; 405 state->reg82 = ADV7393_SD_MODE_REG2_DEFAULT; 406 407 state->output = ADV7393_COMPOSITE_ID; 408 state->std = V4L2_STD_NTSC; 409 410 v4l2_i2c_subdev_init(&state->sd, client, &adv7393_ops); 411 412 v4l2_ctrl_handler_init(&state->hdl, 3); 413 v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, 414 V4L2_CID_BRIGHTNESS, ADV7393_BRIGHTNESS_MIN, 415 ADV7393_BRIGHTNESS_MAX, 1, 416 ADV7393_BRIGHTNESS_DEF); 417 v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, 418 V4L2_CID_HUE, ADV7393_HUE_MIN, 419 ADV7393_HUE_MAX, 1, 420 ADV7393_HUE_DEF); 421 v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, 422 V4L2_CID_GAIN, ADV7393_GAIN_MIN, 423 ADV7393_GAIN_MAX, 1, 424 ADV7393_GAIN_DEF); 425 state->sd.ctrl_handler = &state->hdl; 426 if (state->hdl.error) { 427 int err = state->hdl.error; 428 429 v4l2_ctrl_handler_free(&state->hdl); 430 return err; 431 } 432 v4l2_ctrl_handler_setup(&state->hdl); 433 434 err = adv7393_initialize(&state->sd); 435 if (err) 436 v4l2_ctrl_handler_free(&state->hdl); 437 return err; 438 } 439 440 static int adv7393_remove(struct i2c_client *client) 441 { 442 struct v4l2_subdev *sd = i2c_get_clientdata(client); 443 struct adv7393_state *state = to_state(sd); 444 445 v4l2_device_unregister_subdev(sd); 446 v4l2_ctrl_handler_free(&state->hdl); 447 448 return 0; 449 } 450 451 static const struct i2c_device_id adv7393_id[] = { 452 {"adv7393", 0}, 453 {}, 454 }; 455 MODULE_DEVICE_TABLE(i2c, adv7393_id); 456 457 static struct i2c_driver adv7393_driver = { 458 .driver = { 459 .name = "adv7393", 460 }, 461 .probe = adv7393_probe, 462 .remove = adv7393_remove, 463 .id_table = adv7393_id, 464 }; 465 module_i2c_driver(adv7393_driver); 466