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); 477