1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2018 Gateworks Corporation 4 */ 5 #include <linux/delay.h> 6 #include <linux/hdmi.h> 7 #include <linux/i2c.h> 8 #include <linux/init.h> 9 #include <linux/interrupt.h> 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/of_graph.h> 13 #include <linux/platform_device.h> 14 #include <linux/regulator/consumer.h> 15 #include <linux/types.h> 16 #include <linux/v4l2-dv-timings.h> 17 #include <linux/videodev2.h> 18 19 #include <media/v4l2-ctrls.h> 20 #include <media/v4l2-device.h> 21 #include <media/v4l2-dv-timings.h> 22 #include <media/v4l2-event.h> 23 #include <media/v4l2-fwnode.h> 24 #include <media/i2c/tda1997x.h> 25 26 #include <sound/core.h> 27 #include <sound/pcm.h> 28 #include <sound/pcm_params.h> 29 #include <sound/soc.h> 30 31 #include <dt-bindings/media/tda1997x.h> 32 33 #include "tda1997x_regs.h" 34 35 #define TDA1997X_MBUS_CODES 5 36 37 /* debug level */ 38 static int debug; 39 module_param(debug, int, 0644); 40 MODULE_PARM_DESC(debug, "debug level (0-2)"); 41 42 /* Audio formats */ 43 static const char * const audtype_names[] = { 44 "PCM", /* PCM Samples */ 45 "HBR", /* High Bit Rate Audio */ 46 "OBA", /* One-Bit Audio */ 47 "DST" /* Direct Stream Transfer */ 48 }; 49 50 /* Audio output port formats */ 51 enum audfmt_types { 52 AUDFMT_TYPE_DISABLED = 0, 53 AUDFMT_TYPE_I2S, 54 AUDFMT_TYPE_SPDIF, 55 }; 56 static const char * const audfmt_names[] = { 57 "Disabled", 58 "I2S", 59 "SPDIF", 60 }; 61 62 /* Video input formats */ 63 static const char * const hdmi_colorspace_names[] = { 64 "RGB", "YUV422", "YUV444", "YUV420", "", "", "", "", 65 }; 66 static const char * const hdmi_colorimetry_names[] = { 67 "", "ITU601", "ITU709", "Extended", 68 }; 69 static const char * const v4l2_quantization_names[] = { 70 "Default", 71 "Full Range (0-255)", 72 "Limited Range (16-235)", 73 }; 74 75 /* Video output port formats */ 76 static const char * const vidfmt_names[] = { 77 "RGB444/YUV444", /* RGB/YUV444 16bit data bus, 8bpp */ 78 "YUV422 semi-planar", /* YUV422 16bit data base, 8bpp */ 79 "YUV422 CCIR656", /* BT656 (YUV 8bpp 2 clock per pixel) */ 80 "Invalid", 81 }; 82 83 /* 84 * Colorspace conversion matrices 85 */ 86 struct color_matrix_coefs { 87 const char *name; 88 /* Input offsets */ 89 s16 offint1; 90 s16 offint2; 91 s16 offint3; 92 /* Coeficients */ 93 s16 p11coef; 94 s16 p12coef; 95 s16 p13coef; 96 s16 p21coef; 97 s16 p22coef; 98 s16 p23coef; 99 s16 p31coef; 100 s16 p32coef; 101 s16 p33coef; 102 /* Output offsets */ 103 s16 offout1; 104 s16 offout2; 105 s16 offout3; 106 }; 107 108 enum { 109 ITU709_RGBFULL, 110 ITU601_RGBFULL, 111 RGBLIMITED_RGBFULL, 112 RGBLIMITED_ITU601, 113 RGBLIMITED_ITU709, 114 RGBFULL_ITU601, 115 RGBFULL_ITU709, 116 }; 117 118 /* NB: 4096 is 1.0 using fixed point numbers */ 119 static const struct color_matrix_coefs conv_matrix[] = { 120 { 121 "YUV709 -> RGB full", 122 -256, -2048, -2048, 123 4769, -2183, -873, 124 4769, 7343, 0, 125 4769, 0, 8652, 126 0, 0, 0, 127 }, 128 { 129 "YUV601 -> RGB full", 130 -256, -2048, -2048, 131 4769, -3330, -1602, 132 4769, 6538, 0, 133 4769, 0, 8264, 134 256, 256, 256, 135 }, 136 { 137 "RGB limited -> RGB full", 138 -256, -256, -256, 139 0, 4769, 0, 140 0, 0, 4769, 141 4769, 0, 0, 142 0, 0, 0, 143 }, 144 { 145 "RGB limited -> ITU601", 146 -256, -256, -256, 147 2404, 1225, 467, 148 -1754, 2095, -341, 149 -1388, -707, 2095, 150 256, 2048, 2048, 151 }, 152 { 153 "RGB limited -> ITU709", 154 -256, -256, -256, 155 2918, 867, 295, 156 -1894, 2087, -190, 157 -1607, -477, 2087, 158 256, 2048, 2048, 159 }, 160 { 161 "RGB full -> ITU601", 162 0, 0, 0, 163 2065, 1052, 401, 164 -1506, 1799, -293, 165 -1192, -607, 1799, 166 256, 2048, 2048, 167 }, 168 { 169 "RGB full -> ITU709", 170 0, 0, 0, 171 2506, 745, 253, 172 -1627, 1792, -163, 173 -1380, -410, 1792, 174 256, 2048, 2048, 175 }, 176 }; 177 178 static const struct v4l2_dv_timings_cap tda1997x_dv_timings_cap = { 179 .type = V4L2_DV_BT_656_1120, 180 /* keep this initialization for compatibility with GCC < 4.4.6 */ 181 .reserved = { 0 }, 182 183 V4L2_INIT_BT_TIMINGS( 184 640, 1920, /* min/max width */ 185 350, 1200, /* min/max height */ 186 13000000, 165000000, /* min/max pixelclock */ 187 /* standards */ 188 V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | 189 V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT, 190 /* capabilities */ 191 V4L2_DV_BT_CAP_INTERLACED | V4L2_DV_BT_CAP_PROGRESSIVE | 192 V4L2_DV_BT_CAP_REDUCED_BLANKING | 193 V4L2_DV_BT_CAP_CUSTOM 194 ) 195 }; 196 197 /* regulator supplies */ 198 static const char * const tda1997x_supply_name[] = { 199 "DOVDD", /* Digital I/O supply */ 200 "DVDD", /* Digital Core supply */ 201 "AVDD", /* Analog supply */ 202 }; 203 204 #define TDA1997X_NUM_SUPPLIES ARRAY_SIZE(tda1997x_supply_name) 205 206 enum tda1997x_type { 207 TDA19971, 208 TDA19973, 209 }; 210 211 enum tda1997x_hdmi_pads { 212 TDA1997X_PAD_SOURCE, 213 TDA1997X_NUM_PADS, 214 }; 215 216 struct tda1997x_chip_info { 217 enum tda1997x_type type; 218 const char *name; 219 }; 220 221 struct tda1997x_state { 222 const struct tda1997x_chip_info *info; 223 struct tda1997x_platform_data pdata; 224 struct i2c_client *client; 225 struct i2c_client *client_cec; 226 struct v4l2_subdev sd; 227 struct regulator_bulk_data supplies[TDA1997X_NUM_SUPPLIES]; 228 struct media_pad pads[TDA1997X_NUM_PADS]; 229 struct mutex lock; 230 struct mutex page_lock; 231 char page; 232 233 /* detected info from chip */ 234 int chip_revision; 235 char port_30bit; 236 char output_2p5; 237 char tmdsb_clk; 238 char tmdsb_soc; 239 240 /* status info */ 241 char hdmi_status; 242 char mptrw_in_progress; 243 char activity_status; 244 char input_detect[2]; 245 246 /* video */ 247 struct hdmi_avi_infoframe avi_infoframe; 248 struct v4l2_hdmi_colorimetry colorimetry; 249 u32 rgb_quantization_range; 250 struct v4l2_dv_timings timings; 251 int fps; 252 const struct color_matrix_coefs *conv; 253 u32 mbus_codes[TDA1997X_MBUS_CODES]; /* available modes */ 254 u32 mbus_code; /* current mode */ 255 u8 vid_fmt; 256 257 /* controls */ 258 struct v4l2_ctrl_handler hdl; 259 struct v4l2_ctrl *detect_tx_5v_ctrl; 260 struct v4l2_ctrl *rgb_quantization_range_ctrl; 261 262 /* audio */ 263 u8 audio_ch_alloc; 264 int audio_samplerate; 265 int audio_channels; 266 int audio_samplesize; 267 int audio_type; 268 struct mutex audio_lock; 269 struct snd_pcm_substream *audio_stream; 270 271 /* EDID */ 272 struct { 273 u8 edid[256]; 274 u32 present; 275 unsigned int blocks; 276 } edid; 277 struct delayed_work delayed_work_enable_hpd; 278 }; 279 280 static const struct v4l2_event tda1997x_ev_fmt = { 281 .type = V4L2_EVENT_SOURCE_CHANGE, 282 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 283 }; 284 285 static const struct tda1997x_chip_info tda1997x_chip_info[] = { 286 [TDA19971] = { 287 .type = TDA19971, 288 .name = "tda19971", 289 }, 290 [TDA19973] = { 291 .type = TDA19973, 292 .name = "tda19973", 293 }, 294 }; 295 296 static inline struct tda1997x_state *to_state(struct v4l2_subdev *sd) 297 { 298 return container_of(sd, struct tda1997x_state, sd); 299 } 300 301 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) 302 { 303 return &container_of(ctrl->handler, struct tda1997x_state, hdl)->sd; 304 } 305 306 static int tda1997x_cec_read(struct v4l2_subdev *sd, u8 reg) 307 { 308 struct tda1997x_state *state = to_state(sd); 309 int val; 310 311 val = i2c_smbus_read_byte_data(state->client_cec, reg); 312 if (val < 0) { 313 v4l_err(state->client, "read reg error: reg=%2x\n", reg); 314 val = -1; 315 } 316 317 return val; 318 } 319 320 static int tda1997x_cec_write(struct v4l2_subdev *sd, u8 reg, u8 val) 321 { 322 struct tda1997x_state *state = to_state(sd); 323 int ret = 0; 324 325 ret = i2c_smbus_write_byte_data(state->client_cec, reg, val); 326 if (ret < 0) { 327 v4l_err(state->client, "write reg error:reg=%2x,val=%2x\n", 328 reg, val); 329 ret = -1; 330 } 331 332 return ret; 333 } 334 335 /* ----------------------------------------------------------------------------- 336 * I2C transfer 337 */ 338 339 static int tda1997x_setpage(struct v4l2_subdev *sd, u8 page) 340 { 341 struct tda1997x_state *state = to_state(sd); 342 int ret; 343 344 if (state->page != page) { 345 ret = i2c_smbus_write_byte_data(state->client, 346 REG_CURPAGE_00H, page); 347 if (ret < 0) { 348 v4l_err(state->client, 349 "write reg error:reg=%2x,val=%2x\n", 350 REG_CURPAGE_00H, page); 351 return ret; 352 } 353 state->page = page; 354 } 355 return 0; 356 } 357 358 static inline int io_read(struct v4l2_subdev *sd, u16 reg) 359 { 360 struct tda1997x_state *state = to_state(sd); 361 int val; 362 363 mutex_lock(&state->page_lock); 364 if (tda1997x_setpage(sd, reg >> 8)) { 365 val = -1; 366 goto out; 367 } 368 369 val = i2c_smbus_read_byte_data(state->client, reg&0xff); 370 if (val < 0) { 371 v4l_err(state->client, "read reg error: reg=%2x\n", reg & 0xff); 372 val = -1; 373 goto out; 374 } 375 376 out: 377 mutex_unlock(&state->page_lock); 378 return val; 379 } 380 381 static inline long io_read16(struct v4l2_subdev *sd, u16 reg) 382 { 383 int val; 384 long lval = 0; 385 386 val = io_read(sd, reg); 387 if (val < 0) 388 return val; 389 lval |= (val << 8); 390 val = io_read(sd, reg + 1); 391 if (val < 0) 392 return val; 393 lval |= val; 394 395 return lval; 396 } 397 398 static inline long io_read24(struct v4l2_subdev *sd, u16 reg) 399 { 400 int val; 401 long lval = 0; 402 403 val = io_read(sd, reg); 404 if (val < 0) 405 return val; 406 lval |= (val << 16); 407 val = io_read(sd, reg + 1); 408 if (val < 0) 409 return val; 410 lval |= (val << 8); 411 val = io_read(sd, reg + 2); 412 if (val < 0) 413 return val; 414 lval |= val; 415 416 return lval; 417 } 418 419 static unsigned int io_readn(struct v4l2_subdev *sd, u16 reg, u8 len, u8 *data) 420 { 421 int i; 422 int sz = 0; 423 int val; 424 425 for (i = 0; i < len; i++) { 426 val = io_read(sd, reg + i); 427 if (val < 0) 428 break; 429 data[i] = val; 430 sz++; 431 } 432 433 return sz; 434 } 435 436 static int io_write(struct v4l2_subdev *sd, u16 reg, u8 val) 437 { 438 struct tda1997x_state *state = to_state(sd); 439 s32 ret = 0; 440 441 mutex_lock(&state->page_lock); 442 if (tda1997x_setpage(sd, reg >> 8)) { 443 ret = -1; 444 goto out; 445 } 446 447 ret = i2c_smbus_write_byte_data(state->client, reg & 0xff, val); 448 if (ret < 0) { 449 v4l_err(state->client, "write reg error:reg=%2x,val=%2x\n", 450 reg&0xff, val); 451 ret = -1; 452 goto out; 453 } 454 455 out: 456 mutex_unlock(&state->page_lock); 457 return ret; 458 } 459 460 static int io_write16(struct v4l2_subdev *sd, u16 reg, u16 val) 461 { 462 int ret; 463 464 ret = io_write(sd, reg, (val >> 8) & 0xff); 465 if (ret < 0) 466 return ret; 467 ret = io_write(sd, reg + 1, val & 0xff); 468 if (ret < 0) 469 return ret; 470 return 0; 471 } 472 473 static int io_write24(struct v4l2_subdev *sd, u16 reg, u32 val) 474 { 475 int ret; 476 477 ret = io_write(sd, reg, (val >> 16) & 0xff); 478 if (ret < 0) 479 return ret; 480 ret = io_write(sd, reg + 1, (val >> 8) & 0xff); 481 if (ret < 0) 482 return ret; 483 ret = io_write(sd, reg + 2, val & 0xff); 484 if (ret < 0) 485 return ret; 486 return 0; 487 } 488 489 /* ----------------------------------------------------------------------------- 490 * Hotplug 491 */ 492 493 enum hpd_mode { 494 HPD_LOW_BP, /* HPD low and pulse of at least 100ms */ 495 HPD_LOW_OTHER, /* HPD low and pulse of at least 100ms */ 496 HPD_HIGH_BP, /* HIGH */ 497 HPD_HIGH_OTHER, 498 HPD_PULSE, /* HPD low pulse */ 499 }; 500 501 /* manual HPD (Hot Plug Detect) control */ 502 static int tda1997x_manual_hpd(struct v4l2_subdev *sd, enum hpd_mode mode) 503 { 504 u8 hpd_auto, hpd_pwr, hpd_man; 505 506 hpd_auto = io_read(sd, REG_HPD_AUTO_CTRL); 507 hpd_pwr = io_read(sd, REG_HPD_POWER); 508 hpd_man = io_read(sd, REG_HPD_MAN_CTRL); 509 510 /* mask out unused bits */ 511 hpd_man &= (HPD_MAN_CTRL_HPD_PULSE | 512 HPD_MAN_CTRL_5VEN | 513 HPD_MAN_CTRL_HPD_B | 514 HPD_MAN_CTRL_HPD_A); 515 516 switch (mode) { 517 /* HPD low and pulse of at least 100ms */ 518 case HPD_LOW_BP: 519 /* hpd_bp=0 */ 520 hpd_pwr &= ~HPD_POWER_BP_MASK; 521 /* disable HPD_A and HPD_B */ 522 hpd_man &= ~(HPD_MAN_CTRL_HPD_A | HPD_MAN_CTRL_HPD_B); 523 io_write(sd, REG_HPD_POWER, hpd_pwr); 524 io_write(sd, REG_HPD_MAN_CTRL, hpd_man); 525 break; 526 /* HPD high */ 527 case HPD_HIGH_BP: 528 /* hpd_bp=1 */ 529 hpd_pwr &= ~HPD_POWER_BP_MASK; 530 hpd_pwr |= 1 << HPD_POWER_BP_SHIFT; 531 io_write(sd, REG_HPD_POWER, hpd_pwr); 532 break; 533 /* HPD low and pulse of at least 100ms */ 534 case HPD_LOW_OTHER: 535 /* disable HPD_A and HPD_B */ 536 hpd_man &= ~(HPD_MAN_CTRL_HPD_A | HPD_MAN_CTRL_HPD_B); 537 /* hp_other=0 */ 538 hpd_auto &= ~HPD_AUTO_HP_OTHER; 539 io_write(sd, REG_HPD_AUTO_CTRL, hpd_auto); 540 io_write(sd, REG_HPD_MAN_CTRL, hpd_man); 541 break; 542 /* HPD high */ 543 case HPD_HIGH_OTHER: 544 hpd_auto |= HPD_AUTO_HP_OTHER; 545 io_write(sd, REG_HPD_AUTO_CTRL, hpd_auto); 546 break; 547 /* HPD low pulse */ 548 case HPD_PULSE: 549 /* disable HPD_A and HPD_B */ 550 hpd_man &= ~(HPD_MAN_CTRL_HPD_A | HPD_MAN_CTRL_HPD_B); 551 io_write(sd, REG_HPD_MAN_CTRL, hpd_man); 552 break; 553 } 554 555 return 0; 556 } 557 558 static void tda1997x_delayed_work_enable_hpd(struct work_struct *work) 559 { 560 struct delayed_work *dwork = to_delayed_work(work); 561 struct tda1997x_state *state = container_of(dwork, 562 struct tda1997x_state, 563 delayed_work_enable_hpd); 564 struct v4l2_subdev *sd = &state->sd; 565 566 v4l2_dbg(2, debug, sd, "%s\n", __func__); 567 568 /* Set HPD high */ 569 tda1997x_manual_hpd(sd, HPD_HIGH_OTHER); 570 tda1997x_manual_hpd(sd, HPD_HIGH_BP); 571 572 state->edid.present = 1; 573 } 574 575 static void tda1997x_disable_edid(struct v4l2_subdev *sd) 576 { 577 struct tda1997x_state *state = to_state(sd); 578 579 v4l2_dbg(1, debug, sd, "%s\n", __func__); 580 cancel_delayed_work_sync(&state->delayed_work_enable_hpd); 581 582 /* Set HPD low */ 583 tda1997x_manual_hpd(sd, HPD_LOW_BP); 584 } 585 586 static void tda1997x_enable_edid(struct v4l2_subdev *sd) 587 { 588 struct tda1997x_state *state = to_state(sd); 589 590 v4l2_dbg(1, debug, sd, "%s\n", __func__); 591 592 /* Enable hotplug after 100ms */ 593 schedule_delayed_work(&state->delayed_work_enable_hpd, HZ / 10); 594 } 595 596 /* ----------------------------------------------------------------------------- 597 * Signal Control 598 */ 599 600 /* 601 * configure vid_fmt based on mbus_code 602 */ 603 static int 604 tda1997x_setup_format(struct tda1997x_state *state, u32 code) 605 { 606 v4l_dbg(1, debug, state->client, "%s code=0x%x\n", __func__, code); 607 switch (code) { 608 case MEDIA_BUS_FMT_RGB121212_1X36: 609 case MEDIA_BUS_FMT_RGB888_1X24: 610 case MEDIA_BUS_FMT_YUV12_1X36: 611 case MEDIA_BUS_FMT_YUV8_1X24: 612 state->vid_fmt = OF_FMT_444; 613 break; 614 case MEDIA_BUS_FMT_UYVY12_1X24: 615 case MEDIA_BUS_FMT_UYVY10_1X20: 616 case MEDIA_BUS_FMT_UYVY8_1X16: 617 state->vid_fmt = OF_FMT_422_SMPT; 618 break; 619 case MEDIA_BUS_FMT_UYVY12_2X12: 620 case MEDIA_BUS_FMT_UYVY10_2X10: 621 case MEDIA_BUS_FMT_UYVY8_2X8: 622 state->vid_fmt = OF_FMT_422_CCIR; 623 break; 624 default: 625 v4l_err(state->client, "incompatible format (0x%x)\n", code); 626 return -EINVAL; 627 } 628 v4l_dbg(1, debug, state->client, "%s code=0x%x fmt=%s\n", __func__, 629 code, vidfmt_names[state->vid_fmt]); 630 state->mbus_code = code; 631 632 return 0; 633 } 634 635 /* 636 * The color conversion matrix will convert between the colorimetry of the 637 * HDMI input to the desired output format RGB|YUV. RGB output is to be 638 * full-range and YUV is to be limited range. 639 * 640 * RGB full-range uses values from 0 to 255 which is recommended on a monitor 641 * and RGB Limited uses values from 16 to 236 (16=black, 235=white) which is 642 * typically recommended on a TV. 643 */ 644 static void 645 tda1997x_configure_csc(struct v4l2_subdev *sd) 646 { 647 struct tda1997x_state *state = to_state(sd); 648 struct hdmi_avi_infoframe *avi = &state->avi_infoframe; 649 struct v4l2_hdmi_colorimetry *c = &state->colorimetry; 650 /* Blanking code values depend on output colorspace (RGB or YUV) */ 651 struct blanking_codes { 652 s16 code_gy; 653 s16 code_bu; 654 s16 code_rv; 655 }; 656 static const struct blanking_codes rgb_blanking = { 64, 64, 64 }; 657 static const struct blanking_codes yuv_blanking = { 64, 512, 512 }; 658 const struct blanking_codes *blanking_codes = NULL; 659 u8 reg; 660 661 v4l_dbg(1, debug, state->client, "input:%s quant:%s output:%s\n", 662 hdmi_colorspace_names[avi->colorspace], 663 v4l2_quantization_names[c->quantization], 664 vidfmt_names[state->vid_fmt]); 665 state->conv = NULL; 666 switch (state->vid_fmt) { 667 /* RGB output */ 668 case OF_FMT_444: 669 blanking_codes = &rgb_blanking; 670 if (c->colorspace == V4L2_COLORSPACE_SRGB) { 671 if (c->quantization == V4L2_QUANTIZATION_LIM_RANGE) 672 state->conv = &conv_matrix[RGBLIMITED_RGBFULL]; 673 } else { 674 if (c->colorspace == V4L2_COLORSPACE_REC709) 675 state->conv = &conv_matrix[ITU709_RGBFULL]; 676 else if (c->colorspace == V4L2_COLORSPACE_SMPTE170M) 677 state->conv = &conv_matrix[ITU601_RGBFULL]; 678 } 679 break; 680 681 /* YUV output */ 682 case OF_FMT_422_SMPT: /* semi-planar */ 683 case OF_FMT_422_CCIR: /* CCIR656 */ 684 blanking_codes = &yuv_blanking; 685 if ((c->colorspace == V4L2_COLORSPACE_SRGB) && 686 (c->quantization == V4L2_QUANTIZATION_FULL_RANGE)) { 687 if (state->timings.bt.height <= 576) 688 state->conv = &conv_matrix[RGBFULL_ITU601]; 689 else 690 state->conv = &conv_matrix[RGBFULL_ITU709]; 691 } else if ((c->colorspace == V4L2_COLORSPACE_SRGB) && 692 (c->quantization == V4L2_QUANTIZATION_LIM_RANGE)) { 693 if (state->timings.bt.height <= 576) 694 state->conv = &conv_matrix[RGBLIMITED_ITU601]; 695 else 696 state->conv = &conv_matrix[RGBLIMITED_ITU709]; 697 } 698 break; 699 } 700 701 if (state->conv) { 702 v4l_dbg(1, debug, state->client, "%s\n", 703 state->conv->name); 704 /* enable matrix conversion */ 705 reg = io_read(sd, REG_VDP_CTRL); 706 reg &= ~VDP_CTRL_MATRIX_BP; 707 io_write(sd, REG_VDP_CTRL, reg); 708 /* offset inputs */ 709 io_write16(sd, REG_VDP_MATRIX + 0, state->conv->offint1); 710 io_write16(sd, REG_VDP_MATRIX + 2, state->conv->offint2); 711 io_write16(sd, REG_VDP_MATRIX + 4, state->conv->offint3); 712 /* coefficients */ 713 io_write16(sd, REG_VDP_MATRIX + 6, state->conv->p11coef); 714 io_write16(sd, REG_VDP_MATRIX + 8, state->conv->p12coef); 715 io_write16(sd, REG_VDP_MATRIX + 10, state->conv->p13coef); 716 io_write16(sd, REG_VDP_MATRIX + 12, state->conv->p21coef); 717 io_write16(sd, REG_VDP_MATRIX + 14, state->conv->p22coef); 718 io_write16(sd, REG_VDP_MATRIX + 16, state->conv->p23coef); 719 io_write16(sd, REG_VDP_MATRIX + 18, state->conv->p31coef); 720 io_write16(sd, REG_VDP_MATRIX + 20, state->conv->p32coef); 721 io_write16(sd, REG_VDP_MATRIX + 22, state->conv->p33coef); 722 /* offset outputs */ 723 io_write16(sd, REG_VDP_MATRIX + 24, state->conv->offout1); 724 io_write16(sd, REG_VDP_MATRIX + 26, state->conv->offout2); 725 io_write16(sd, REG_VDP_MATRIX + 28, state->conv->offout3); 726 } else { 727 /* disable matrix conversion */ 728 reg = io_read(sd, REG_VDP_CTRL); 729 reg |= VDP_CTRL_MATRIX_BP; 730 io_write(sd, REG_VDP_CTRL, reg); 731 } 732 733 /* SetBlankingCodes */ 734 if (blanking_codes) { 735 io_write16(sd, REG_BLK_GY, blanking_codes->code_gy); 736 io_write16(sd, REG_BLK_BU, blanking_codes->code_bu); 737 io_write16(sd, REG_BLK_RV, blanking_codes->code_rv); 738 } 739 } 740 741 /* Configure frame detection window and VHREF timing generator */ 742 static void 743 tda1997x_configure_vhref(struct v4l2_subdev *sd) 744 { 745 struct tda1997x_state *state = to_state(sd); 746 const struct v4l2_bt_timings *bt = &state->timings.bt; 747 int width, lines; 748 u16 href_start, href_end; 749 u16 vref_f1_start, vref_f2_start; 750 u8 vref_f1_width, vref_f2_width; 751 u8 field_polarity; 752 u16 fieldref_f1_start, fieldref_f2_start; 753 u8 reg; 754 755 href_start = bt->hbackporch + bt->hsync + 1; 756 href_end = href_start + bt->width; 757 vref_f1_start = bt->height + bt->vbackporch + bt->vsync + 758 bt->il_vbackporch + bt->il_vsync + 759 bt->il_vfrontporch; 760 vref_f1_width = bt->vbackporch + bt->vsync + bt->vfrontporch; 761 vref_f2_start = 0; 762 vref_f2_width = 0; 763 fieldref_f1_start = 0; 764 fieldref_f2_start = 0; 765 if (bt->interlaced) { 766 vref_f2_start = (bt->height / 2) + 767 (bt->il_vbackporch + bt->il_vsync - 1); 768 vref_f2_width = bt->il_vbackporch + bt->il_vsync + 769 bt->il_vfrontporch; 770 fieldref_f2_start = vref_f2_start + bt->il_vfrontporch + 771 fieldref_f1_start; 772 } 773 field_polarity = 0; 774 775 width = V4L2_DV_BT_FRAME_WIDTH(bt); 776 lines = V4L2_DV_BT_FRAME_HEIGHT(bt); 777 778 /* 779 * Configure Frame Detection Window: 780 * horiz area where the VHREF module consider a VSYNC a new frame 781 */ 782 io_write16(sd, REG_FDW_S, 0x2ef); /* start position */ 783 io_write16(sd, REG_FDW_E, 0x141); /* end position */ 784 785 /* Set Pixel And Line Counters */ 786 if (state->chip_revision == 0) 787 io_write16(sd, REG_PXCNT_PR, 4); 788 else 789 io_write16(sd, REG_PXCNT_PR, 1); 790 io_write16(sd, REG_PXCNT_NPIX, width & MASK_VHREF); 791 io_write16(sd, REG_LCNT_PR, 1); 792 io_write16(sd, REG_LCNT_NLIN, lines & MASK_VHREF); 793 794 /* 795 * Configure the VHRef timing generator responsible for rebuilding all 796 * horiz and vert synch and ref signals from its input allowing auto 797 * detection algorithms and forcing predefined modes (480i & 576i) 798 */ 799 reg = VHREF_STD_DET_OFF << VHREF_STD_DET_SHIFT; 800 io_write(sd, REG_VHREF_CTRL, reg); 801 802 /* 803 * Configure the VHRef timing values. In case the VHREF generator has 804 * been configured in manual mode, this will allow to manually set all 805 * horiz and vert ref values (non-active pixel areas) of the generator 806 * and allows setting the frame reference params. 807 */ 808 /* horizontal reference start/end */ 809 io_write16(sd, REG_HREF_S, href_start & MASK_VHREF); 810 io_write16(sd, REG_HREF_E, href_end & MASK_VHREF); 811 /* vertical reference f1 start/end */ 812 io_write16(sd, REG_VREF_F1_S, vref_f1_start & MASK_VHREF); 813 io_write(sd, REG_VREF_F1_WIDTH, vref_f1_width); 814 /* vertical reference f2 start/end */ 815 io_write16(sd, REG_VREF_F2_S, vref_f2_start & MASK_VHREF); 816 io_write(sd, REG_VREF_F2_WIDTH, vref_f2_width); 817 818 /* F1/F2 FREF, field polarity */ 819 reg = fieldref_f1_start & MASK_VHREF; 820 reg |= field_polarity << 8; 821 io_write16(sd, REG_FREF_F1_S, reg); 822 reg = fieldref_f2_start & MASK_VHREF; 823 io_write16(sd, REG_FREF_F2_S, reg); 824 } 825 826 /* Configure Video Output port signals */ 827 static int 828 tda1997x_configure_vidout(struct tda1997x_state *state) 829 { 830 struct v4l2_subdev *sd = &state->sd; 831 struct tda1997x_platform_data *pdata = &state->pdata; 832 u8 prefilter; 833 u8 reg; 834 835 /* Configure pixel clock generator: delay, polarity, rate */ 836 reg = (state->vid_fmt == OF_FMT_422_CCIR) ? 837 PCLK_SEL_X2 : PCLK_SEL_X1; 838 reg |= pdata->vidout_delay_pclk << PCLK_DELAY_SHIFT; 839 reg |= pdata->vidout_inv_pclk << PCLK_INV_SHIFT; 840 io_write(sd, REG_PCLK, reg); 841 842 /* Configure pre-filter */ 843 prefilter = 0; /* filters off */ 844 /* YUV422 mode requires conversion */ 845 if ((state->vid_fmt == OF_FMT_422_SMPT) || 846 (state->vid_fmt == OF_FMT_422_CCIR)) { 847 /* 2/7 taps for Rv and Bu */ 848 prefilter = FILTERS_CTRL_2_7TAP << FILTERS_CTRL_BU_SHIFT | 849 FILTERS_CTRL_2_7TAP << FILTERS_CTRL_RV_SHIFT; 850 } 851 io_write(sd, REG_FILTERS_CTRL, prefilter); 852 853 /* Configure video port */ 854 reg = state->vid_fmt & OF_FMT_MASK; 855 if (state->vid_fmt == OF_FMT_422_CCIR) 856 reg |= (OF_BLK | OF_TRC); 857 reg |= OF_VP_ENABLE; 858 io_write(sd, REG_OF, reg); 859 860 /* Configure formatter and conversions */ 861 reg = io_read(sd, REG_VDP_CTRL); 862 /* pre-filter is needed unless (REG_FILTERS_CTRL == 0) */ 863 if (!prefilter) 864 reg |= VDP_CTRL_PREFILTER_BP; 865 else 866 reg &= ~VDP_CTRL_PREFILTER_BP; 867 /* formatter is needed for YUV422 and for trc/blc codes */ 868 if (state->vid_fmt == OF_FMT_444) 869 reg |= VDP_CTRL_FORMATTER_BP; 870 /* formatter and compdel needed for timing/blanking codes */ 871 else 872 reg &= ~(VDP_CTRL_FORMATTER_BP | VDP_CTRL_COMPDEL_BP); 873 /* activate compdel for small sync delays */ 874 if ((pdata->vidout_delay_vs < 4) || (pdata->vidout_delay_hs < 4)) 875 reg &= ~VDP_CTRL_COMPDEL_BP; 876 io_write(sd, REG_VDP_CTRL, reg); 877 878 /* Configure DE output signal: delay, polarity, and source */ 879 reg = pdata->vidout_delay_de << DE_FREF_DELAY_SHIFT | 880 pdata->vidout_inv_de << DE_FREF_INV_SHIFT | 881 pdata->vidout_sel_de << DE_FREF_SEL_SHIFT; 882 io_write(sd, REG_DE_FREF, reg); 883 884 /* Configure HS/HREF output signal: delay, polarity, and source */ 885 if (state->vid_fmt != OF_FMT_422_CCIR) { 886 reg = pdata->vidout_delay_hs << HS_HREF_DELAY_SHIFT | 887 pdata->vidout_inv_hs << HS_HREF_INV_SHIFT | 888 pdata->vidout_sel_hs << HS_HREF_SEL_SHIFT; 889 } else 890 reg = HS_HREF_SEL_NONE << HS_HREF_SEL_SHIFT; 891 io_write(sd, REG_HS_HREF, reg); 892 893 /* Configure VS/VREF output signal: delay, polarity, and source */ 894 if (state->vid_fmt != OF_FMT_422_CCIR) { 895 reg = pdata->vidout_delay_vs << VS_VREF_DELAY_SHIFT | 896 pdata->vidout_inv_vs << VS_VREF_INV_SHIFT | 897 pdata->vidout_sel_vs << VS_VREF_SEL_SHIFT; 898 } else 899 reg = VS_VREF_SEL_NONE << VS_VREF_SEL_SHIFT; 900 io_write(sd, REG_VS_VREF, reg); 901 902 return 0; 903 } 904 905 /* Configure Audio output port signals */ 906 static int 907 tda1997x_configure_audout(struct v4l2_subdev *sd, u8 channel_assignment) 908 { 909 struct tda1997x_state *state = to_state(sd); 910 struct tda1997x_platform_data *pdata = &state->pdata; 911 bool sp_used_by_fifo = true; 912 u8 reg; 913 914 if (!pdata->audout_format) 915 return 0; 916 917 /* channel assignment (CEA-861-D Table 20) */ 918 io_write(sd, REG_AUDIO_PATH, channel_assignment); 919 920 /* Audio output configuration */ 921 reg = 0; 922 switch (pdata->audout_format) { 923 case AUDFMT_TYPE_I2S: 924 reg |= AUDCFG_BUS_I2S << AUDCFG_BUS_SHIFT; 925 break; 926 case AUDFMT_TYPE_SPDIF: 927 reg |= AUDCFG_BUS_SPDIF << AUDCFG_BUS_SHIFT; 928 break; 929 } 930 switch (state->audio_type) { 931 case AUDCFG_TYPE_PCM: 932 reg |= AUDCFG_TYPE_PCM << AUDCFG_TYPE_SHIFT; 933 break; 934 case AUDCFG_TYPE_OBA: 935 reg |= AUDCFG_TYPE_OBA << AUDCFG_TYPE_SHIFT; 936 break; 937 case AUDCFG_TYPE_DST: 938 reg |= AUDCFG_TYPE_DST << AUDCFG_TYPE_SHIFT; 939 sp_used_by_fifo = false; 940 break; 941 case AUDCFG_TYPE_HBR: 942 reg |= AUDCFG_TYPE_HBR << AUDCFG_TYPE_SHIFT; 943 if (pdata->audout_layout == 1) { 944 /* demuxed via AP0:AP3 */ 945 reg |= AUDCFG_HBR_DEMUX << AUDCFG_HBR_SHIFT; 946 if (pdata->audout_format == AUDFMT_TYPE_SPDIF) 947 sp_used_by_fifo = false; 948 } else { 949 /* straight via AP0 */ 950 reg |= AUDCFG_HBR_STRAIGHT << AUDCFG_HBR_SHIFT; 951 } 952 break; 953 } 954 if (pdata->audout_width == 32) 955 reg |= AUDCFG_I2SW_32 << AUDCFG_I2SW_SHIFT; 956 else 957 reg |= AUDCFG_I2SW_16 << AUDCFG_I2SW_SHIFT; 958 959 /* automatic hardware mute */ 960 if (pdata->audio_auto_mute) 961 reg |= AUDCFG_AUTO_MUTE_EN; 962 /* clock polarity */ 963 if (pdata->audout_invert_clk) 964 reg |= AUDCFG_CLK_INVERT; 965 io_write(sd, REG_AUDCFG, reg); 966 967 /* audio layout */ 968 reg = (pdata->audout_layout) ? AUDIO_LAYOUT_LAYOUT1 : 0; 969 if (!pdata->audout_layoutauto) 970 reg |= AUDIO_LAYOUT_MANUAL; 971 if (sp_used_by_fifo) 972 reg |= AUDIO_LAYOUT_SP_FLAG; 973 io_write(sd, REG_AUDIO_LAYOUT, reg); 974 975 /* FIFO Latency value */ 976 io_write(sd, REG_FIFO_LATENCY_VAL, 0x80); 977 978 /* Audio output port config */ 979 if (sp_used_by_fifo) { 980 reg = AUDIO_OUT_ENABLE_AP0; 981 if (channel_assignment >= 0x01) 982 reg |= AUDIO_OUT_ENABLE_AP1; 983 if (channel_assignment >= 0x04) 984 reg |= AUDIO_OUT_ENABLE_AP2; 985 if (channel_assignment >= 0x0c) 986 reg |= AUDIO_OUT_ENABLE_AP3; 987 /* specific cases where AP1 is not used */ 988 if ((channel_assignment == 0x04) 989 || (channel_assignment == 0x08) 990 || (channel_assignment == 0x0c) 991 || (channel_assignment == 0x10) 992 || (channel_assignment == 0x14) 993 || (channel_assignment == 0x18) 994 || (channel_assignment == 0x1c)) 995 reg &= ~AUDIO_OUT_ENABLE_AP1; 996 /* specific cases where AP2 is not used */ 997 if ((channel_assignment >= 0x14) 998 && (channel_assignment <= 0x17)) 999 reg &= ~AUDIO_OUT_ENABLE_AP2; 1000 } else { 1001 reg = AUDIO_OUT_ENABLE_AP3 | 1002 AUDIO_OUT_ENABLE_AP2 | 1003 AUDIO_OUT_ENABLE_AP1 | 1004 AUDIO_OUT_ENABLE_AP0; 1005 } 1006 if (pdata->audout_format == AUDFMT_TYPE_I2S) 1007 reg |= (AUDIO_OUT_ENABLE_ACLK | AUDIO_OUT_ENABLE_WS); 1008 io_write(sd, REG_AUDIO_OUT_ENABLE, reg); 1009 1010 /* reset test mode to normal audio freq auto selection */ 1011 io_write(sd, REG_TEST_MODE, 0x00); 1012 1013 return 0; 1014 } 1015 1016 /* Soft Reset of specific hdmi info */ 1017 static int 1018 tda1997x_hdmi_info_reset(struct v4l2_subdev *sd, u8 info_rst, bool reset_sus) 1019 { 1020 u8 reg; 1021 1022 /* reset infoframe engine packets */ 1023 reg = io_read(sd, REG_HDMI_INFO_RST); 1024 io_write(sd, REG_HDMI_INFO_RST, info_rst); 1025 1026 /* if infoframe engine has been reset clear INT_FLG_MODE */ 1027 if (reg & RESET_IF) { 1028 reg = io_read(sd, REG_INT_FLG_CLR_MODE); 1029 io_write(sd, REG_INT_FLG_CLR_MODE, reg); 1030 } 1031 1032 /* Disable REFTIM to restart start-up-sequencer (SUS) */ 1033 reg = io_read(sd, REG_RATE_CTRL); 1034 reg &= ~RATE_REFTIM_ENABLE; 1035 if (!reset_sus) 1036 reg |= RATE_REFTIM_ENABLE; 1037 reg = io_write(sd, REG_RATE_CTRL, reg); 1038 1039 return 0; 1040 } 1041 1042 static void 1043 tda1997x_power_mode(struct tda1997x_state *state, bool enable) 1044 { 1045 struct v4l2_subdev *sd = &state->sd; 1046 u8 reg; 1047 1048 if (enable) { 1049 /* Automatic control of TMDS */ 1050 io_write(sd, REG_PON_OVR_EN, PON_DIS); 1051 /* Enable current bias unit */ 1052 io_write(sd, REG_CFG1, PON_EN); 1053 /* Enable deep color PLL */ 1054 io_write(sd, REG_DEEP_PLL7_BYP, PON_DIS); 1055 /* Output buffers active */ 1056 reg = io_read(sd, REG_OF); 1057 reg &= ~OF_VP_ENABLE; 1058 io_write(sd, REG_OF, reg); 1059 } else { 1060 /* Power down EDID mode sequence */ 1061 /* Output buffers in HiZ */ 1062 reg = io_read(sd, REG_OF); 1063 reg |= OF_VP_ENABLE; 1064 io_write(sd, REG_OF, reg); 1065 /* Disable deep color PLL */ 1066 io_write(sd, REG_DEEP_PLL7_BYP, PON_EN); 1067 /* Disable current bias unit */ 1068 io_write(sd, REG_CFG1, PON_DIS); 1069 /* Manual control of TMDS */ 1070 io_write(sd, REG_PON_OVR_EN, PON_EN); 1071 } 1072 } 1073 1074 static bool 1075 tda1997x_detect_tx_5v(struct v4l2_subdev *sd) 1076 { 1077 u8 reg = io_read(sd, REG_DETECT_5V); 1078 1079 return ((reg & DETECT_5V_SEL) ? 1 : 0); 1080 } 1081 1082 static bool 1083 tda1997x_detect_tx_hpd(struct v4l2_subdev *sd) 1084 { 1085 u8 reg = io_read(sd, REG_DETECT_5V); 1086 1087 return ((reg & DETECT_HPD) ? 1 : 0); 1088 } 1089 1090 static int 1091 tda1997x_detect_std(struct tda1997x_state *state, 1092 struct v4l2_dv_timings *timings) 1093 { 1094 struct v4l2_subdev *sd = &state->sd; 1095 1096 /* 1097 * Read the FMT registers 1098 * REG_V_PER: Period of a frame (or field) in MCLK (27MHz) cycles 1099 * REG_H_PER: Period of a line in MCLK (27MHz) cycles 1100 * REG_HS_WIDTH: Period of horiz sync pulse in MCLK (27MHz) cycles 1101 */ 1102 u32 vper, vsync_pos; 1103 u16 hper, hsync_pos, hsper, interlaced; 1104 u16 htot, hact, hfront, hsync, hback; 1105 u16 vtot, vact, vfront1, vfront2, vsync, vback1, vback2; 1106 1107 if (!state->input_detect[0] && !state->input_detect[1]) 1108 return -ENOLINK; 1109 1110 vper = io_read24(sd, REG_V_PER); 1111 hper = io_read16(sd, REG_H_PER); 1112 hsper = io_read16(sd, REG_HS_WIDTH); 1113 vsync_pos = vper & MASK_VPER_SYNC_POS; 1114 hsync_pos = hper & MASK_HPER_SYNC_POS; 1115 interlaced = hsper & MASK_HSWIDTH_INTERLACED; 1116 vper &= MASK_VPER; 1117 hper &= MASK_HPER; 1118 hsper &= MASK_HSWIDTH; 1119 v4l2_dbg(1, debug, sd, "Signal Timings: %u/%u/%u\n", vper, hper, hsper); 1120 1121 htot = io_read16(sd, REG_FMT_H_TOT); 1122 hact = io_read16(sd, REG_FMT_H_ACT); 1123 hfront = io_read16(sd, REG_FMT_H_FRONT); 1124 hsync = io_read16(sd, REG_FMT_H_SYNC); 1125 hback = io_read16(sd, REG_FMT_H_BACK); 1126 1127 vtot = io_read16(sd, REG_FMT_V_TOT); 1128 vact = io_read16(sd, REG_FMT_V_ACT); 1129 vfront1 = io_read(sd, REG_FMT_V_FRONT_F1); 1130 vfront2 = io_read(sd, REG_FMT_V_FRONT_F2); 1131 vsync = io_read(sd, REG_FMT_V_SYNC); 1132 vback1 = io_read(sd, REG_FMT_V_BACK_F1); 1133 vback2 = io_read(sd, REG_FMT_V_BACK_F2); 1134 1135 v4l2_dbg(1, debug, sd, "Geometry: H %u %u %u %u %u Sync%c V %u %u %u %u %u %u %u Sync%c\n", 1136 htot, hact, hfront, hsync, hback, hsync_pos ? '+' : '-', 1137 vtot, vact, vfront1, vfront2, vsync, vback1, vback2, vsync_pos ? '+' : '-'); 1138 1139 if (!timings) 1140 return 0; 1141 1142 timings->type = V4L2_DV_BT_656_1120; 1143 timings->bt.width = hact; 1144 timings->bt.hfrontporch = hfront; 1145 timings->bt.hsync = hsync; 1146 timings->bt.hbackporch = hback; 1147 timings->bt.height = vact; 1148 timings->bt.vfrontporch = vfront1; 1149 timings->bt.vsync = vsync; 1150 timings->bt.vbackporch = vback1; 1151 timings->bt.interlaced = interlaced ? V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE; 1152 timings->bt.polarities = vsync_pos ? V4L2_DV_VSYNC_POS_POL : 0; 1153 timings->bt.polarities |= hsync_pos ? V4L2_DV_HSYNC_POS_POL : 0; 1154 1155 timings->bt.pixelclock = (u64)htot * vtot * 27000000; 1156 if (interlaced) { 1157 timings->bt.il_vfrontporch = vfront2; 1158 timings->bt.il_vsync = timings->bt.vsync; 1159 timings->bt.il_vbackporch = vback2; 1160 do_div(timings->bt.pixelclock, vper * 2 /* full frame */); 1161 } else { 1162 timings->bt.il_vfrontporch = 0; 1163 timings->bt.il_vsync = 0; 1164 timings->bt.il_vbackporch = 0; 1165 do_div(timings->bt.pixelclock, vper); 1166 } 1167 v4l2_find_dv_timings_cap(timings, &tda1997x_dv_timings_cap, 1168 (u32)timings->bt.pixelclock / 500, NULL, NULL); 1169 v4l2_print_dv_timings(sd->name, "Detected format: ", timings, false); 1170 return 0; 1171 } 1172 1173 /* some sort of errata workaround for chip revision 0 (N1) */ 1174 static void tda1997x_reset_n1(struct tda1997x_state *state) 1175 { 1176 struct v4l2_subdev *sd = &state->sd; 1177 u8 reg; 1178 1179 /* clear HDMI mode flag in BCAPS */ 1180 io_write(sd, REG_CLK_CFG, CLK_CFG_SEL_ACLK_EN | CLK_CFG_SEL_ACLK); 1181 io_write(sd, REG_PON_OVR_EN, PON_EN); 1182 io_write(sd, REG_PON_CBIAS, PON_EN); 1183 io_write(sd, REG_PON_PLL, PON_EN); 1184 1185 reg = io_read(sd, REG_MODE_REC_CFG1); 1186 reg &= ~0x06; 1187 reg |= 0x02; 1188 io_write(sd, REG_MODE_REC_CFG1, reg); 1189 io_write(sd, REG_CLK_CFG, CLK_CFG_DIS); 1190 io_write(sd, REG_PON_OVR_EN, PON_DIS); 1191 reg = io_read(sd, REG_MODE_REC_CFG1); 1192 reg &= ~0x06; 1193 io_write(sd, REG_MODE_REC_CFG1, reg); 1194 } 1195 1196 /* 1197 * Activity detection must only be notified when stable_clk_x AND active_x 1198 * bits are set to 1. If only stable_clk_x bit is set to 1 but not 1199 * active_x, it means that the TMDS clock is not in the defined range 1200 * and activity detection must not be notified. 1201 */ 1202 static u8 1203 tda1997x_read_activity_status_regs(struct v4l2_subdev *sd) 1204 { 1205 u8 reg, status = 0; 1206 1207 /* Read CLK_A_STATUS register */ 1208 reg = io_read(sd, REG_CLK_A_STATUS); 1209 /* ignore if not active */ 1210 if ((reg & MASK_CLK_STABLE) && !(reg & MASK_CLK_ACTIVE)) 1211 reg &= ~MASK_CLK_STABLE; 1212 status |= ((reg & MASK_CLK_STABLE) >> 2); 1213 1214 /* Read CLK_B_STATUS register */ 1215 reg = io_read(sd, REG_CLK_B_STATUS); 1216 /* ignore if not active */ 1217 if ((reg & MASK_CLK_STABLE) && !(reg & MASK_CLK_ACTIVE)) 1218 reg &= ~MASK_CLK_STABLE; 1219 status |= ((reg & MASK_CLK_STABLE) >> 1); 1220 1221 /* Read the SUS_STATUS register */ 1222 reg = io_read(sd, REG_SUS_STATUS); 1223 1224 /* If state = 5 => TMDS is locked */ 1225 if ((reg & MASK_SUS_STATUS) == LAST_STATE_REACHED) 1226 status |= MASK_SUS_STATE; 1227 else 1228 status &= ~MASK_SUS_STATE; 1229 1230 return status; 1231 } 1232 1233 static void 1234 set_rgb_quantization_range(struct tda1997x_state *state) 1235 { 1236 struct v4l2_hdmi_colorimetry *c = &state->colorimetry; 1237 1238 state->colorimetry = v4l2_hdmi_rx_colorimetry(&state->avi_infoframe, 1239 NULL, 1240 state->timings.bt.height); 1241 /* If ycbcr_enc is V4L2_YCBCR_ENC_DEFAULT, we receive RGB */ 1242 if (c->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT) { 1243 switch (state->rgb_quantization_range) { 1244 case V4L2_DV_RGB_RANGE_LIMITED: 1245 c->quantization = V4L2_QUANTIZATION_FULL_RANGE; 1246 break; 1247 case V4L2_DV_RGB_RANGE_FULL: 1248 c->quantization = V4L2_QUANTIZATION_LIM_RANGE; 1249 break; 1250 } 1251 } 1252 v4l_dbg(1, debug, state->client, 1253 "colorspace=%d/%d colorimetry=%d range=%s content=%d\n", 1254 state->avi_infoframe.colorspace, c->colorspace, 1255 state->avi_infoframe.colorimetry, 1256 v4l2_quantization_names[c->quantization], 1257 state->avi_infoframe.content_type); 1258 } 1259 1260 /* parse an infoframe and do some sanity checks on it */ 1261 static unsigned int 1262 tda1997x_parse_infoframe(struct tda1997x_state *state, u16 addr) 1263 { 1264 struct v4l2_subdev *sd = &state->sd; 1265 union hdmi_infoframe frame; 1266 u8 buffer[40] = { 0 }; 1267 u8 reg; 1268 int len, err; 1269 1270 /* read data */ 1271 len = io_readn(sd, addr, sizeof(buffer), buffer); 1272 err = hdmi_infoframe_unpack(&frame, buffer, len); 1273 if (err) { 1274 v4l_err(state->client, 1275 "failed parsing %d byte infoframe: 0x%04x/0x%02x\n", 1276 len, addr, buffer[0]); 1277 return err; 1278 } 1279 hdmi_infoframe_log(KERN_INFO, &state->client->dev, &frame); 1280 switch (frame.any.type) { 1281 /* Audio InfoFrame: see HDMI spec 8.2.2 */ 1282 case HDMI_INFOFRAME_TYPE_AUDIO: 1283 /* sample rate */ 1284 switch (frame.audio.sample_frequency) { 1285 case HDMI_AUDIO_SAMPLE_FREQUENCY_32000: 1286 state->audio_samplerate = 32000; 1287 break; 1288 case HDMI_AUDIO_SAMPLE_FREQUENCY_44100: 1289 state->audio_samplerate = 44100; 1290 break; 1291 case HDMI_AUDIO_SAMPLE_FREQUENCY_48000: 1292 state->audio_samplerate = 48000; 1293 break; 1294 case HDMI_AUDIO_SAMPLE_FREQUENCY_88200: 1295 state->audio_samplerate = 88200; 1296 break; 1297 case HDMI_AUDIO_SAMPLE_FREQUENCY_96000: 1298 state->audio_samplerate = 96000; 1299 break; 1300 case HDMI_AUDIO_SAMPLE_FREQUENCY_176400: 1301 state->audio_samplerate = 176400; 1302 break; 1303 case HDMI_AUDIO_SAMPLE_FREQUENCY_192000: 1304 state->audio_samplerate = 192000; 1305 break; 1306 default: 1307 case HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM: 1308 break; 1309 } 1310 1311 /* sample size */ 1312 switch (frame.audio.sample_size) { 1313 case HDMI_AUDIO_SAMPLE_SIZE_16: 1314 state->audio_samplesize = 16; 1315 break; 1316 case HDMI_AUDIO_SAMPLE_SIZE_20: 1317 state->audio_samplesize = 20; 1318 break; 1319 case HDMI_AUDIO_SAMPLE_SIZE_24: 1320 state->audio_samplesize = 24; 1321 break; 1322 case HDMI_AUDIO_SAMPLE_SIZE_STREAM: 1323 default: 1324 break; 1325 } 1326 1327 /* Channel Count */ 1328 state->audio_channels = frame.audio.channels; 1329 if (frame.audio.channel_allocation && 1330 frame.audio.channel_allocation != state->audio_ch_alloc) { 1331 /* use the channel assignment from the infoframe */ 1332 state->audio_ch_alloc = frame.audio.channel_allocation; 1333 tda1997x_configure_audout(sd, state->audio_ch_alloc); 1334 /* reset the audio FIFO */ 1335 tda1997x_hdmi_info_reset(sd, RESET_AUDIO, false); 1336 } 1337 break; 1338 1339 /* Auxiliary Video information (AVI) InfoFrame: see HDMI spec 8.2.1 */ 1340 case HDMI_INFOFRAME_TYPE_AVI: 1341 state->avi_infoframe = frame.avi; 1342 set_rgb_quantization_range(state); 1343 1344 /* configure upsampler: 0=bypass 1=repeatchroma 2=interpolate */ 1345 reg = io_read(sd, REG_PIX_REPEAT); 1346 reg &= ~PIX_REPEAT_MASK_UP_SEL; 1347 if (frame.avi.colorspace == HDMI_COLORSPACE_YUV422) 1348 reg |= (PIX_REPEAT_CHROMA << PIX_REPEAT_SHIFT); 1349 io_write(sd, REG_PIX_REPEAT, reg); 1350 1351 /* ConfigurePixelRepeater: repeat n-times each pixel */ 1352 reg = io_read(sd, REG_PIX_REPEAT); 1353 reg &= ~PIX_REPEAT_MASK_REP; 1354 reg |= frame.avi.pixel_repeat; 1355 io_write(sd, REG_PIX_REPEAT, reg); 1356 1357 /* configure the receiver with the new colorspace */ 1358 tda1997x_configure_csc(sd); 1359 break; 1360 default: 1361 break; 1362 } 1363 return 0; 1364 } 1365 1366 static void tda1997x_irq_sus(struct tda1997x_state *state, u8 *flags) 1367 { 1368 struct v4l2_subdev *sd = &state->sd; 1369 u8 reg, source; 1370 1371 source = io_read(sd, REG_INT_FLG_CLR_SUS); 1372 io_write(sd, REG_INT_FLG_CLR_SUS, source); 1373 1374 if (source & MASK_MPT) { 1375 /* reset MTP in use flag if set */ 1376 if (state->mptrw_in_progress) 1377 state->mptrw_in_progress = 0; 1378 } 1379 1380 if (source & MASK_SUS_END) { 1381 /* reset audio FIFO */ 1382 reg = io_read(sd, REG_HDMI_INFO_RST); 1383 reg |= MASK_SR_FIFO_FIFO_CTRL; 1384 io_write(sd, REG_HDMI_INFO_RST, reg); 1385 reg &= ~MASK_SR_FIFO_FIFO_CTRL; 1386 io_write(sd, REG_HDMI_INFO_RST, reg); 1387 1388 /* reset HDMI flags */ 1389 state->hdmi_status = 0; 1390 } 1391 1392 /* filter FMT interrupt based on SUS state */ 1393 reg = io_read(sd, REG_SUS_STATUS); 1394 if (((reg & MASK_SUS_STATUS) != LAST_STATE_REACHED) 1395 || (source & MASK_MPT)) { 1396 source &= ~MASK_FMT; 1397 } 1398 1399 if (source & (MASK_FMT | MASK_SUS_END)) { 1400 reg = io_read(sd, REG_SUS_STATUS); 1401 if ((reg & MASK_SUS_STATUS) != LAST_STATE_REACHED) { 1402 v4l_err(state->client, "BAD SUS STATUS\n"); 1403 return; 1404 } 1405 if (debug) 1406 tda1997x_detect_std(state, NULL); 1407 /* notify user of change in resolution */ 1408 v4l2_subdev_notify_event(&state->sd, &tda1997x_ev_fmt); 1409 } 1410 } 1411 1412 static void tda1997x_irq_ddc(struct tda1997x_state *state, u8 *flags) 1413 { 1414 struct v4l2_subdev *sd = &state->sd; 1415 u8 source; 1416 1417 source = io_read(sd, REG_INT_FLG_CLR_DDC); 1418 io_write(sd, REG_INT_FLG_CLR_DDC, source); 1419 if (source & MASK_EDID_MTP) { 1420 /* reset MTP in use flag if set */ 1421 if (state->mptrw_in_progress) 1422 state->mptrw_in_progress = 0; 1423 } 1424 1425 /* Detection of +5V */ 1426 if (source & MASK_DET_5V) { 1427 v4l2_ctrl_s_ctrl(state->detect_tx_5v_ctrl, 1428 tda1997x_detect_tx_5v(sd)); 1429 } 1430 } 1431 1432 static void tda1997x_irq_rate(struct tda1997x_state *state, u8 *flags) 1433 { 1434 struct v4l2_subdev *sd = &state->sd; 1435 u8 reg, source; 1436 1437 u8 irq_status; 1438 1439 source = io_read(sd, REG_INT_FLG_CLR_RATE); 1440 io_write(sd, REG_INT_FLG_CLR_RATE, source); 1441 1442 /* read status regs */ 1443 irq_status = tda1997x_read_activity_status_regs(sd); 1444 1445 /* 1446 * read clock status reg until INT_FLG_CLR_RATE is still 0 1447 * after the read to make sure its the last one 1448 */ 1449 reg = source; 1450 while (reg != 0) { 1451 irq_status = tda1997x_read_activity_status_regs(sd); 1452 reg = io_read(sd, REG_INT_FLG_CLR_RATE); 1453 io_write(sd, REG_INT_FLG_CLR_RATE, reg); 1454 source |= reg; 1455 } 1456 1457 /* we only pay attention to stability change events */ 1458 if (source & (MASK_RATE_A_ST | MASK_RATE_B_ST)) { 1459 int input = (source & MASK_RATE_A_ST)?0:1; 1460 u8 mask = 1<<input; 1461 1462 /* state change */ 1463 if ((irq_status & mask) != (state->activity_status & mask)) { 1464 /* activity lost */ 1465 if ((irq_status & mask) == 0) { 1466 v4l_info(state->client, 1467 "HDMI-%c: Digital Activity Lost\n", 1468 input+'A'); 1469 1470 /* bypass up/down sampler and pixel repeater */ 1471 reg = io_read(sd, REG_PIX_REPEAT); 1472 reg &= ~PIX_REPEAT_MASK_UP_SEL; 1473 reg &= ~PIX_REPEAT_MASK_REP; 1474 io_write(sd, REG_PIX_REPEAT, reg); 1475 1476 if (state->chip_revision == 0) 1477 tda1997x_reset_n1(state); 1478 1479 state->input_detect[input] = 0; 1480 v4l2_subdev_notify_event(sd, &tda1997x_ev_fmt); 1481 } 1482 1483 /* activity detected */ 1484 else { 1485 v4l_info(state->client, 1486 "HDMI-%c: Digital Activity Detected\n", 1487 input+'A'); 1488 state->input_detect[input] = 1; 1489 } 1490 1491 /* hold onto current state */ 1492 state->activity_status = (irq_status & mask); 1493 } 1494 } 1495 } 1496 1497 static void tda1997x_irq_info(struct tda1997x_state *state, u8 *flags) 1498 { 1499 struct v4l2_subdev *sd = &state->sd; 1500 u8 source; 1501 1502 source = io_read(sd, REG_INT_FLG_CLR_INFO); 1503 io_write(sd, REG_INT_FLG_CLR_INFO, source); 1504 1505 /* Audio infoframe */ 1506 if (source & MASK_AUD_IF) { 1507 tda1997x_parse_infoframe(state, AUD_IF); 1508 source &= ~MASK_AUD_IF; 1509 } 1510 1511 /* Source Product Descriptor infoframe change */ 1512 if (source & MASK_SPD_IF) { 1513 tda1997x_parse_infoframe(state, SPD_IF); 1514 source &= ~MASK_SPD_IF; 1515 } 1516 1517 /* Auxiliary Video Information infoframe */ 1518 if (source & MASK_AVI_IF) { 1519 tda1997x_parse_infoframe(state, AVI_IF); 1520 source &= ~MASK_AVI_IF; 1521 } 1522 } 1523 1524 static void tda1997x_irq_audio(struct tda1997x_state *state, u8 *flags) 1525 { 1526 struct v4l2_subdev *sd = &state->sd; 1527 u8 reg, source; 1528 1529 source = io_read(sd, REG_INT_FLG_CLR_AUDIO); 1530 io_write(sd, REG_INT_FLG_CLR_AUDIO, source); 1531 1532 /* reset audio FIFO on FIFO pointer error or audio mute */ 1533 if (source & MASK_ERROR_FIFO_PT || 1534 source & MASK_MUTE_FLG) { 1535 /* audio reset audio FIFO */ 1536 reg = io_read(sd, REG_SUS_STATUS); 1537 if ((reg & MASK_SUS_STATUS) == LAST_STATE_REACHED) { 1538 reg = io_read(sd, REG_HDMI_INFO_RST); 1539 reg |= MASK_SR_FIFO_FIFO_CTRL; 1540 io_write(sd, REG_HDMI_INFO_RST, reg); 1541 reg &= ~MASK_SR_FIFO_FIFO_CTRL; 1542 io_write(sd, REG_HDMI_INFO_RST, reg); 1543 /* reset channel status IT if present */ 1544 source &= ~(MASK_CH_STATE); 1545 } 1546 } 1547 if (source & MASK_AUDIO_FREQ_FLG) { 1548 static const int freq[] = { 1549 0, 32000, 44100, 48000, 88200, 96000, 176400, 192000 1550 }; 1551 1552 reg = io_read(sd, REG_AUDIO_FREQ); 1553 state->audio_samplerate = freq[reg & 7]; 1554 v4l_info(state->client, "Audio Frequency Change: %dHz\n", 1555 state->audio_samplerate); 1556 } 1557 if (source & MASK_AUDIO_FLG) { 1558 reg = io_read(sd, REG_AUDIO_FLAGS); 1559 if (reg & BIT(AUDCFG_TYPE_DST)) 1560 state->audio_type = AUDCFG_TYPE_DST; 1561 if (reg & BIT(AUDCFG_TYPE_OBA)) 1562 state->audio_type = AUDCFG_TYPE_OBA; 1563 if (reg & BIT(AUDCFG_TYPE_HBR)) 1564 state->audio_type = AUDCFG_TYPE_HBR; 1565 if (reg & BIT(AUDCFG_TYPE_PCM)) 1566 state->audio_type = AUDCFG_TYPE_PCM; 1567 v4l_info(state->client, "Audio Type: %s\n", 1568 audtype_names[state->audio_type]); 1569 } 1570 } 1571 1572 static void tda1997x_irq_hdcp(struct tda1997x_state *state, u8 *flags) 1573 { 1574 struct v4l2_subdev *sd = &state->sd; 1575 u8 reg, source; 1576 1577 source = io_read(sd, REG_INT_FLG_CLR_HDCP); 1578 io_write(sd, REG_INT_FLG_CLR_HDCP, source); 1579 1580 /* reset MTP in use flag if set */ 1581 if (source & MASK_HDCP_MTP) 1582 state->mptrw_in_progress = 0; 1583 if (source & MASK_STATE_C5) { 1584 /* REPEATER: mask AUDIO and IF irqs to avoid IF during auth */ 1585 reg = io_read(sd, REG_INT_MASK_TOP); 1586 reg &= ~(INTERRUPT_AUDIO | INTERRUPT_INFO); 1587 io_write(sd, REG_INT_MASK_TOP, reg); 1588 *flags &= (INTERRUPT_AUDIO | INTERRUPT_INFO); 1589 } 1590 } 1591 1592 static irqreturn_t tda1997x_isr_thread(int irq, void *d) 1593 { 1594 struct tda1997x_state *state = d; 1595 struct v4l2_subdev *sd = &state->sd; 1596 u8 flags; 1597 1598 mutex_lock(&state->lock); 1599 do { 1600 /* read interrupt flags */ 1601 flags = io_read(sd, REG_INT_FLG_CLR_TOP); 1602 if (flags == 0) 1603 break; 1604 1605 /* SUS interrupt source (Input activity events) */ 1606 if (flags & INTERRUPT_SUS) 1607 tda1997x_irq_sus(state, &flags); 1608 /* DDC interrupt source (Display Data Channel) */ 1609 else if (flags & INTERRUPT_DDC) 1610 tda1997x_irq_ddc(state, &flags); 1611 /* RATE interrupt source (Digital Input activity) */ 1612 else if (flags & INTERRUPT_RATE) 1613 tda1997x_irq_rate(state, &flags); 1614 /* Infoframe change interrupt */ 1615 else if (flags & INTERRUPT_INFO) 1616 tda1997x_irq_info(state, &flags); 1617 /* Audio interrupt source: 1618 * freq change, DST,OBA,HBR,ASP flags, mute, FIFO err 1619 */ 1620 else if (flags & INTERRUPT_AUDIO) 1621 tda1997x_irq_audio(state, &flags); 1622 /* HDCP interrupt source (content protection) */ 1623 if (flags & INTERRUPT_HDCP) 1624 tda1997x_irq_hdcp(state, &flags); 1625 } while (flags != 0); 1626 mutex_unlock(&state->lock); 1627 1628 return IRQ_HANDLED; 1629 } 1630 1631 /* ----------------------------------------------------------------------------- 1632 * v4l2_subdev_video_ops 1633 */ 1634 1635 static int 1636 tda1997x_g_input_status(struct v4l2_subdev *sd, u32 *status) 1637 { 1638 struct tda1997x_state *state = to_state(sd); 1639 u32 vper; 1640 u16 hper; 1641 u16 hsper; 1642 1643 mutex_lock(&state->lock); 1644 vper = io_read24(sd, REG_V_PER) & MASK_VPER; 1645 hper = io_read16(sd, REG_H_PER) & MASK_HPER; 1646 hsper = io_read16(sd, REG_HS_WIDTH) & MASK_HSWIDTH; 1647 /* 1648 * The tda1997x supports A/B inputs but only a single output. 1649 * The irq handler monitors for timing changes on both inputs and 1650 * sets the input_detect array to 0|1 depending on signal presence. 1651 * I believe selection of A vs B is automatic. 1652 * 1653 * The vper/hper/hsper registers provide the frame period, line period 1654 * and horiz sync period (units of MCLK clock cycles (27MHz)) and 1655 * testing shows these values to be random if no signal is present 1656 * or locked. 1657 */ 1658 v4l2_dbg(1, debug, sd, "inputs:%d/%d timings:%d/%d/%d\n", 1659 state->input_detect[0], state->input_detect[1], 1660 vper, hper, hsper); 1661 if (!state->input_detect[0] && !state->input_detect[1]) 1662 *status = V4L2_IN_ST_NO_SIGNAL; 1663 else if (!vper || !hper || !hsper) 1664 *status = V4L2_IN_ST_NO_SYNC; 1665 else 1666 *status = 0; 1667 mutex_unlock(&state->lock); 1668 1669 return 0; 1670 }; 1671 1672 static int tda1997x_s_dv_timings(struct v4l2_subdev *sd, 1673 struct v4l2_dv_timings *timings) 1674 { 1675 struct tda1997x_state *state = to_state(sd); 1676 1677 v4l_dbg(1, debug, state->client, "%s\n", __func__); 1678 1679 if (v4l2_match_dv_timings(&state->timings, timings, 0, false)) 1680 return 0; /* no changes */ 1681 1682 if (!v4l2_valid_dv_timings(timings, &tda1997x_dv_timings_cap, 1683 NULL, NULL)) 1684 return -ERANGE; 1685 1686 mutex_lock(&state->lock); 1687 state->timings = *timings; 1688 /* setup frame detection window and VHREF timing generator */ 1689 tda1997x_configure_vhref(sd); 1690 /* configure colorspace conversion */ 1691 tda1997x_configure_csc(sd); 1692 mutex_unlock(&state->lock); 1693 1694 return 0; 1695 } 1696 1697 static int tda1997x_g_dv_timings(struct v4l2_subdev *sd, 1698 struct v4l2_dv_timings *timings) 1699 { 1700 struct tda1997x_state *state = to_state(sd); 1701 1702 v4l_dbg(1, debug, state->client, "%s\n", __func__); 1703 mutex_lock(&state->lock); 1704 *timings = state->timings; 1705 mutex_unlock(&state->lock); 1706 1707 return 0; 1708 } 1709 1710 static int tda1997x_query_dv_timings(struct v4l2_subdev *sd, 1711 struct v4l2_dv_timings *timings) 1712 { 1713 struct tda1997x_state *state = to_state(sd); 1714 int ret; 1715 1716 v4l_dbg(1, debug, state->client, "%s\n", __func__); 1717 memset(timings, 0, sizeof(struct v4l2_dv_timings)); 1718 mutex_lock(&state->lock); 1719 ret = tda1997x_detect_std(state, timings); 1720 mutex_unlock(&state->lock); 1721 1722 return ret; 1723 } 1724 1725 static const struct v4l2_subdev_video_ops tda1997x_video_ops = { 1726 .g_input_status = tda1997x_g_input_status, 1727 .s_dv_timings = tda1997x_s_dv_timings, 1728 .g_dv_timings = tda1997x_g_dv_timings, 1729 .query_dv_timings = tda1997x_query_dv_timings, 1730 }; 1731 1732 1733 /* ----------------------------------------------------------------------------- 1734 * v4l2_subdev_pad_ops 1735 */ 1736 1737 static int tda1997x_init_cfg(struct v4l2_subdev *sd, 1738 struct v4l2_subdev_state *sd_state) 1739 { 1740 struct tda1997x_state *state = to_state(sd); 1741 struct v4l2_mbus_framefmt *mf; 1742 1743 mf = v4l2_subdev_get_try_format(sd, sd_state, 0); 1744 mf->code = state->mbus_codes[0]; 1745 1746 return 0; 1747 } 1748 1749 static int tda1997x_enum_mbus_code(struct v4l2_subdev *sd, 1750 struct v4l2_subdev_state *sd_state, 1751 struct v4l2_subdev_mbus_code_enum *code) 1752 { 1753 struct tda1997x_state *state = to_state(sd); 1754 1755 v4l_dbg(1, debug, state->client, "%s %d\n", __func__, code->index); 1756 if (code->index >= ARRAY_SIZE(state->mbus_codes)) 1757 return -EINVAL; 1758 1759 if (!state->mbus_codes[code->index]) 1760 return -EINVAL; 1761 1762 code->code = state->mbus_codes[code->index]; 1763 1764 return 0; 1765 } 1766 1767 static void tda1997x_fill_format(struct tda1997x_state *state, 1768 struct v4l2_mbus_framefmt *format) 1769 { 1770 const struct v4l2_bt_timings *bt; 1771 1772 memset(format, 0, sizeof(*format)); 1773 bt = &state->timings.bt; 1774 format->width = bt->width; 1775 format->height = bt->height; 1776 format->colorspace = state->colorimetry.colorspace; 1777 format->field = (bt->interlaced) ? 1778 V4L2_FIELD_SEQ_TB : V4L2_FIELD_NONE; 1779 } 1780 1781 static int tda1997x_get_format(struct v4l2_subdev *sd, 1782 struct v4l2_subdev_state *sd_state, 1783 struct v4l2_subdev_format *format) 1784 { 1785 struct tda1997x_state *state = to_state(sd); 1786 1787 v4l_dbg(1, debug, state->client, "%s pad=%d which=%d\n", 1788 __func__, format->pad, format->which); 1789 1790 tda1997x_fill_format(state, &format->format); 1791 1792 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 1793 struct v4l2_mbus_framefmt *fmt; 1794 1795 fmt = v4l2_subdev_get_try_format(sd, sd_state, format->pad); 1796 format->format.code = fmt->code; 1797 } else 1798 format->format.code = state->mbus_code; 1799 1800 return 0; 1801 } 1802 1803 static int tda1997x_set_format(struct v4l2_subdev *sd, 1804 struct v4l2_subdev_state *sd_state, 1805 struct v4l2_subdev_format *format) 1806 { 1807 struct tda1997x_state *state = to_state(sd); 1808 u32 code = 0; 1809 int i; 1810 1811 v4l_dbg(1, debug, state->client, "%s pad=%d which=%d fmt=0x%x\n", 1812 __func__, format->pad, format->which, format->format.code); 1813 1814 for (i = 0; i < ARRAY_SIZE(state->mbus_codes); i++) { 1815 if (format->format.code == state->mbus_codes[i]) { 1816 code = state->mbus_codes[i]; 1817 break; 1818 } 1819 } 1820 if (!code) 1821 code = state->mbus_codes[0]; 1822 1823 tda1997x_fill_format(state, &format->format); 1824 format->format.code = code; 1825 1826 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 1827 struct v4l2_mbus_framefmt *fmt; 1828 1829 fmt = v4l2_subdev_get_try_format(sd, sd_state, format->pad); 1830 *fmt = format->format; 1831 } else { 1832 int ret = tda1997x_setup_format(state, format->format.code); 1833 1834 if (ret) 1835 return ret; 1836 /* mbus_code has changed - re-configure csc/vidout */ 1837 tda1997x_configure_csc(sd); 1838 tda1997x_configure_vidout(state); 1839 } 1840 1841 return 0; 1842 } 1843 1844 static int tda1997x_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) 1845 { 1846 struct tda1997x_state *state = to_state(sd); 1847 1848 v4l_dbg(1, debug, state->client, "%s pad=%d\n", __func__, edid->pad); 1849 memset(edid->reserved, 0, sizeof(edid->reserved)); 1850 1851 if (edid->start_block == 0 && edid->blocks == 0) { 1852 edid->blocks = state->edid.blocks; 1853 return 0; 1854 } 1855 1856 if (!state->edid.present) 1857 return -ENODATA; 1858 1859 if (edid->start_block >= state->edid.blocks) 1860 return -EINVAL; 1861 1862 if (edid->start_block + edid->blocks > state->edid.blocks) 1863 edid->blocks = state->edid.blocks - edid->start_block; 1864 1865 memcpy(edid->edid, state->edid.edid + edid->start_block * 128, 1866 edid->blocks * 128); 1867 1868 return 0; 1869 } 1870 1871 static int tda1997x_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) 1872 { 1873 struct tda1997x_state *state = to_state(sd); 1874 int i; 1875 1876 v4l_dbg(1, debug, state->client, "%s pad=%d\n", __func__, edid->pad); 1877 memset(edid->reserved, 0, sizeof(edid->reserved)); 1878 1879 if (edid->start_block != 0) 1880 return -EINVAL; 1881 1882 if (edid->blocks == 0) { 1883 state->edid.blocks = 0; 1884 state->edid.present = 0; 1885 tda1997x_disable_edid(sd); 1886 return 0; 1887 } 1888 1889 if (edid->blocks > 2) { 1890 edid->blocks = 2; 1891 return -E2BIG; 1892 } 1893 1894 tda1997x_disable_edid(sd); 1895 1896 /* write base EDID */ 1897 for (i = 0; i < 128; i++) 1898 io_write(sd, REG_EDID_IN_BYTE0 + i, edid->edid[i]); 1899 1900 /* write CEA Extension */ 1901 for (i = 0; i < 128; i++) 1902 io_write(sd, REG_EDID_IN_BYTE128 + i, edid->edid[i+128]); 1903 1904 /* store state */ 1905 memcpy(state->edid.edid, edid->edid, 256); 1906 state->edid.blocks = edid->blocks; 1907 1908 tda1997x_enable_edid(sd); 1909 1910 return 0; 1911 } 1912 1913 static int tda1997x_get_dv_timings_cap(struct v4l2_subdev *sd, 1914 struct v4l2_dv_timings_cap *cap) 1915 { 1916 *cap = tda1997x_dv_timings_cap; 1917 return 0; 1918 } 1919 1920 static int tda1997x_enum_dv_timings(struct v4l2_subdev *sd, 1921 struct v4l2_enum_dv_timings *timings) 1922 { 1923 return v4l2_enum_dv_timings_cap(timings, &tda1997x_dv_timings_cap, 1924 NULL, NULL); 1925 } 1926 1927 static const struct v4l2_subdev_pad_ops tda1997x_pad_ops = { 1928 .init_cfg = tda1997x_init_cfg, 1929 .enum_mbus_code = tda1997x_enum_mbus_code, 1930 .get_fmt = tda1997x_get_format, 1931 .set_fmt = tda1997x_set_format, 1932 .get_edid = tda1997x_get_edid, 1933 .set_edid = tda1997x_set_edid, 1934 .dv_timings_cap = tda1997x_get_dv_timings_cap, 1935 .enum_dv_timings = tda1997x_enum_dv_timings, 1936 }; 1937 1938 /* ----------------------------------------------------------------------------- 1939 * v4l2_subdev_core_ops 1940 */ 1941 1942 static int tda1997x_log_infoframe(struct v4l2_subdev *sd, int addr) 1943 { 1944 struct tda1997x_state *state = to_state(sd); 1945 union hdmi_infoframe frame; 1946 u8 buffer[40] = { 0 }; 1947 int len, err; 1948 1949 /* read data */ 1950 len = io_readn(sd, addr, sizeof(buffer), buffer); 1951 v4l2_dbg(1, debug, sd, "infoframe: addr=%d len=%d\n", addr, len); 1952 err = hdmi_infoframe_unpack(&frame, buffer, len); 1953 if (err) { 1954 v4l_err(state->client, 1955 "failed parsing %d byte infoframe: 0x%04x/0x%02x\n", 1956 len, addr, buffer[0]); 1957 return err; 1958 } 1959 hdmi_infoframe_log(KERN_INFO, &state->client->dev, &frame); 1960 1961 return 0; 1962 } 1963 1964 static int tda1997x_log_status(struct v4l2_subdev *sd) 1965 { 1966 struct tda1997x_state *state = to_state(sd); 1967 struct v4l2_dv_timings timings; 1968 struct hdmi_avi_infoframe *avi = &state->avi_infoframe; 1969 1970 v4l2_info(sd, "-----Chip status-----\n"); 1971 v4l2_info(sd, "Chip: %s N%d\n", state->info->name, 1972 state->chip_revision + 1); 1973 v4l2_info(sd, "EDID Enabled: %s\n", state->edid.present ? "yes" : "no"); 1974 1975 v4l2_info(sd, "-----Signal status-----\n"); 1976 v4l2_info(sd, "Cable detected (+5V power): %s\n", 1977 tda1997x_detect_tx_5v(sd) ? "yes" : "no"); 1978 v4l2_info(sd, "HPD detected: %s\n", 1979 tda1997x_detect_tx_hpd(sd) ? "yes" : "no"); 1980 1981 v4l2_info(sd, "-----Video Timings-----\n"); 1982 switch (tda1997x_detect_std(state, &timings)) { 1983 case -ENOLINK: 1984 v4l2_info(sd, "No video detected\n"); 1985 break; 1986 case -ERANGE: 1987 v4l2_info(sd, "Invalid signal detected\n"); 1988 break; 1989 } 1990 v4l2_print_dv_timings(sd->name, "Configured format: ", 1991 &state->timings, true); 1992 1993 v4l2_info(sd, "-----Color space-----\n"); 1994 v4l2_info(sd, "Input color space: %s %s %s", 1995 hdmi_colorspace_names[avi->colorspace], 1996 (avi->colorspace == HDMI_COLORSPACE_RGB) ? "" : 1997 hdmi_colorimetry_names[avi->colorimetry], 1998 v4l2_quantization_names[state->colorimetry.quantization]); 1999 v4l2_info(sd, "Output color space: %s", 2000 vidfmt_names[state->vid_fmt]); 2001 v4l2_info(sd, "Color space conversion: %s", state->conv ? 2002 state->conv->name : "None"); 2003 2004 v4l2_info(sd, "-----Audio-----\n"); 2005 if (state->audio_channels) { 2006 v4l2_info(sd, "audio: %dch %dHz\n", state->audio_channels, 2007 state->audio_samplerate); 2008 } else { 2009 v4l2_info(sd, "audio: none\n"); 2010 } 2011 2012 v4l2_info(sd, "-----Infoframes-----\n"); 2013 tda1997x_log_infoframe(sd, AUD_IF); 2014 tda1997x_log_infoframe(sd, SPD_IF); 2015 tda1997x_log_infoframe(sd, AVI_IF); 2016 2017 return 0; 2018 } 2019 2020 static int tda1997x_subscribe_event(struct v4l2_subdev *sd, 2021 struct v4l2_fh *fh, 2022 struct v4l2_event_subscription *sub) 2023 { 2024 switch (sub->type) { 2025 case V4L2_EVENT_SOURCE_CHANGE: 2026 return v4l2_src_change_event_subdev_subscribe(sd, fh, sub); 2027 case V4L2_EVENT_CTRL: 2028 return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub); 2029 default: 2030 return -EINVAL; 2031 } 2032 } 2033 2034 static const struct v4l2_subdev_core_ops tda1997x_core_ops = { 2035 .log_status = tda1997x_log_status, 2036 .subscribe_event = tda1997x_subscribe_event, 2037 .unsubscribe_event = v4l2_event_subdev_unsubscribe, 2038 }; 2039 2040 /* ----------------------------------------------------------------------------- 2041 * v4l2_subdev_ops 2042 */ 2043 2044 static const struct v4l2_subdev_ops tda1997x_subdev_ops = { 2045 .core = &tda1997x_core_ops, 2046 .video = &tda1997x_video_ops, 2047 .pad = &tda1997x_pad_ops, 2048 }; 2049 2050 /* ----------------------------------------------------------------------------- 2051 * v4l2_controls 2052 */ 2053 2054 static int tda1997x_s_ctrl(struct v4l2_ctrl *ctrl) 2055 { 2056 struct v4l2_subdev *sd = to_sd(ctrl); 2057 struct tda1997x_state *state = to_state(sd); 2058 2059 switch (ctrl->id) { 2060 /* allow overriding the default RGB quantization range */ 2061 case V4L2_CID_DV_RX_RGB_RANGE: 2062 state->rgb_quantization_range = ctrl->val; 2063 set_rgb_quantization_range(state); 2064 tda1997x_configure_csc(sd); 2065 return 0; 2066 } 2067 2068 return -EINVAL; 2069 }; 2070 2071 static int tda1997x_g_volatile_ctrl(struct v4l2_ctrl *ctrl) 2072 { 2073 struct v4l2_subdev *sd = to_sd(ctrl); 2074 struct tda1997x_state *state = to_state(sd); 2075 2076 if (ctrl->id == V4L2_CID_DV_RX_IT_CONTENT_TYPE) { 2077 ctrl->val = state->avi_infoframe.content_type; 2078 return 0; 2079 } 2080 return -EINVAL; 2081 }; 2082 2083 static const struct v4l2_ctrl_ops tda1997x_ctrl_ops = { 2084 .s_ctrl = tda1997x_s_ctrl, 2085 .g_volatile_ctrl = tda1997x_g_volatile_ctrl, 2086 }; 2087 2088 static int tda1997x_core_init(struct v4l2_subdev *sd) 2089 { 2090 struct tda1997x_state *state = to_state(sd); 2091 struct tda1997x_platform_data *pdata = &state->pdata; 2092 u8 reg; 2093 int i; 2094 2095 /* disable HPD */ 2096 io_write(sd, REG_HPD_AUTO_CTRL, HPD_AUTO_HPD_UNSEL); 2097 if (state->chip_revision == 0) { 2098 io_write(sd, REG_MAN_SUS_HDMI_SEL, MAN_DIS_HDCP | MAN_RST_HDCP); 2099 io_write(sd, REG_CGU_DBG_SEL, 1 << CGU_DBG_CLK_SEL_SHIFT); 2100 } 2101 2102 /* reset infoframe at end of start-up-sequencer */ 2103 io_write(sd, REG_SUS_SET_RGB2, 0x06); 2104 io_write(sd, REG_SUS_SET_RGB3, 0x06); 2105 2106 /* Enable TMDS pull-ups */ 2107 io_write(sd, REG_RT_MAN_CTRL, RT_MAN_CTRL_RT | 2108 RT_MAN_CTRL_RT_B | RT_MAN_CTRL_RT_A); 2109 2110 /* enable sync measurement timing */ 2111 tda1997x_cec_write(sd, REG_PWR_CONTROL & 0xff, 0x04); 2112 /* adjust CEC clock divider */ 2113 tda1997x_cec_write(sd, REG_OSC_DIVIDER & 0xff, 0x03); 2114 tda1997x_cec_write(sd, REG_EN_OSC_PERIOD_LSB & 0xff, 0xa0); 2115 io_write(sd, REG_TIMER_D, 0x54); 2116 /* enable power switch */ 2117 reg = tda1997x_cec_read(sd, REG_CONTROL & 0xff); 2118 reg |= 0x20; 2119 tda1997x_cec_write(sd, REG_CONTROL & 0xff, reg); 2120 mdelay(50); 2121 2122 /* read the chip version */ 2123 reg = io_read(sd, REG_VERSION); 2124 /* get the chip configuration */ 2125 reg = io_read(sd, REG_CMTP_REG10); 2126 2127 /* enable interrupts we care about */ 2128 io_write(sd, REG_INT_MASK_TOP, 2129 INTERRUPT_HDCP | INTERRUPT_AUDIO | INTERRUPT_INFO | 2130 INTERRUPT_RATE | INTERRUPT_SUS); 2131 /* config_mtp,fmt,sus_end,sus_st */ 2132 io_write(sd, REG_INT_MASK_SUS, MASK_MPT | MASK_FMT | MASK_SUS_END); 2133 /* rate stability change for inputs A/B */ 2134 io_write(sd, REG_INT_MASK_RATE, MASK_RATE_B_ST | MASK_RATE_A_ST); 2135 /* aud,spd,avi*/ 2136 io_write(sd, REG_INT_MASK_INFO, 2137 MASK_AUD_IF | MASK_SPD_IF | MASK_AVI_IF); 2138 /* audio_freq,audio_flg,mute_flg,fifo_err */ 2139 io_write(sd, REG_INT_MASK_AUDIO, 2140 MASK_AUDIO_FREQ_FLG | MASK_AUDIO_FLG | MASK_MUTE_FLG | 2141 MASK_ERROR_FIFO_PT); 2142 /* HDCP C5 state reached */ 2143 io_write(sd, REG_INT_MASK_HDCP, MASK_STATE_C5); 2144 /* 5V detect and HDP pulse end */ 2145 io_write(sd, REG_INT_MASK_DDC, MASK_DET_5V); 2146 /* don't care about AFE/MODE */ 2147 io_write(sd, REG_INT_MASK_AFE, 0); 2148 io_write(sd, REG_INT_MASK_MODE, 0); 2149 2150 /* clear all interrupts */ 2151 io_write(sd, REG_INT_FLG_CLR_TOP, 0xff); 2152 io_write(sd, REG_INT_FLG_CLR_SUS, 0xff); 2153 io_write(sd, REG_INT_FLG_CLR_DDC, 0xff); 2154 io_write(sd, REG_INT_FLG_CLR_RATE, 0xff); 2155 io_write(sd, REG_INT_FLG_CLR_MODE, 0xff); 2156 io_write(sd, REG_INT_FLG_CLR_INFO, 0xff); 2157 io_write(sd, REG_INT_FLG_CLR_AUDIO, 0xff); 2158 io_write(sd, REG_INT_FLG_CLR_HDCP, 0xff); 2159 io_write(sd, REG_INT_FLG_CLR_AFE, 0xff); 2160 2161 /* init TMDS equalizer */ 2162 if (state->chip_revision == 0) 2163 io_write(sd, REG_CGU_DBG_SEL, 1 << CGU_DBG_CLK_SEL_SHIFT); 2164 io_write24(sd, REG_CLK_MIN_RATE, CLK_MIN_RATE); 2165 io_write24(sd, REG_CLK_MAX_RATE, CLK_MAX_RATE); 2166 if (state->chip_revision == 0) 2167 io_write(sd, REG_WDL_CFG, WDL_CFG_VAL); 2168 /* DC filter */ 2169 io_write(sd, REG_DEEP_COLOR_CTRL, DC_FILTER_VAL); 2170 /* disable test pattern */ 2171 io_write(sd, REG_SVC_MODE, 0x00); 2172 /* update HDMI INFO CTRL */ 2173 io_write(sd, REG_INFO_CTRL, 0xff); 2174 /* write HDMI INFO EXCEED value */ 2175 io_write(sd, REG_INFO_EXCEED, 3); 2176 2177 if (state->chip_revision == 0) 2178 tda1997x_reset_n1(state); 2179 2180 /* 2181 * No HDCP acknowledge when HDCP is disabled 2182 * and reset SUS to force format detection 2183 */ 2184 tda1997x_hdmi_info_reset(sd, NACK_HDCP, true); 2185 2186 /* Set HPD low */ 2187 tda1997x_manual_hpd(sd, HPD_LOW_BP); 2188 2189 /* Configure receiver capabilities */ 2190 io_write(sd, REG_HDCP_BCAPS, HDCP_HDMI | HDCP_FAST_REAUTH); 2191 2192 /* Configure HDMI: Auto HDCP mode, packet controlled mute */ 2193 reg = HDMI_CTRL_MUTE_AUTO << HDMI_CTRL_MUTE_SHIFT; 2194 reg |= HDMI_CTRL_HDCP_AUTO << HDMI_CTRL_HDCP_SHIFT; 2195 io_write(sd, REG_HDMI_CTRL, reg); 2196 2197 /* reset start-up-sequencer to force format detection */ 2198 tda1997x_hdmi_info_reset(sd, 0, true); 2199 2200 /* disable matrix conversion */ 2201 reg = io_read(sd, REG_VDP_CTRL); 2202 reg |= VDP_CTRL_MATRIX_BP; 2203 io_write(sd, REG_VDP_CTRL, reg); 2204 2205 /* set video output mode */ 2206 tda1997x_configure_vidout(state); 2207 2208 /* configure video output port */ 2209 for (i = 0; i < 9; i++) { 2210 v4l_dbg(1, debug, state->client, "vidout_cfg[%d]=0x%02x\n", i, 2211 pdata->vidout_port_cfg[i]); 2212 io_write(sd, REG_VP35_32_CTRL + i, pdata->vidout_port_cfg[i]); 2213 } 2214 2215 /* configure audio output port */ 2216 tda1997x_configure_audout(sd, 0); 2217 2218 /* configure audio clock freq */ 2219 switch (pdata->audout_mclk_fs) { 2220 case 512: 2221 reg = AUDIO_CLOCK_SEL_512FS; 2222 break; 2223 case 256: 2224 reg = AUDIO_CLOCK_SEL_256FS; 2225 break; 2226 case 128: 2227 reg = AUDIO_CLOCK_SEL_128FS; 2228 break; 2229 case 64: 2230 reg = AUDIO_CLOCK_SEL_64FS; 2231 break; 2232 case 32: 2233 reg = AUDIO_CLOCK_SEL_32FS; 2234 break; 2235 default: 2236 reg = AUDIO_CLOCK_SEL_16FS; 2237 break; 2238 } 2239 io_write(sd, REG_AUDIO_CLOCK, reg); 2240 2241 /* reset advanced infoframes (ISRC1/ISRC2/ACP) */ 2242 tda1997x_hdmi_info_reset(sd, RESET_AI, false); 2243 /* reset infoframe */ 2244 tda1997x_hdmi_info_reset(sd, RESET_IF, false); 2245 /* reset audio infoframes */ 2246 tda1997x_hdmi_info_reset(sd, RESET_AUDIO, false); 2247 /* reset gamut */ 2248 tda1997x_hdmi_info_reset(sd, RESET_GAMUT, false); 2249 2250 /* get initial HDMI status */ 2251 state->hdmi_status = io_read(sd, REG_HDMI_FLAGS); 2252 2253 io_write(sd, REG_EDID_ENABLE, EDID_ENABLE_A_EN | EDID_ENABLE_B_EN); 2254 return 0; 2255 } 2256 2257 static int tda1997x_set_power(struct tda1997x_state *state, bool on) 2258 { 2259 int ret = 0; 2260 2261 if (on) { 2262 ret = regulator_bulk_enable(TDA1997X_NUM_SUPPLIES, 2263 state->supplies); 2264 msleep(300); 2265 } else { 2266 ret = regulator_bulk_disable(TDA1997X_NUM_SUPPLIES, 2267 state->supplies); 2268 } 2269 2270 return ret; 2271 } 2272 2273 static const struct i2c_device_id tda1997x_i2c_id[] = { 2274 {"tda19971", (kernel_ulong_t)&tda1997x_chip_info[TDA19971]}, 2275 {"tda19973", (kernel_ulong_t)&tda1997x_chip_info[TDA19973]}, 2276 { }, 2277 }; 2278 MODULE_DEVICE_TABLE(i2c, tda1997x_i2c_id); 2279 2280 static const struct of_device_id tda1997x_of_id[] __maybe_unused = { 2281 { .compatible = "nxp,tda19971", .data = &tda1997x_chip_info[TDA19971] }, 2282 { .compatible = "nxp,tda19973", .data = &tda1997x_chip_info[TDA19973] }, 2283 { }, 2284 }; 2285 MODULE_DEVICE_TABLE(of, tda1997x_of_id); 2286 2287 static int tda1997x_parse_dt(struct tda1997x_state *state) 2288 { 2289 struct tda1997x_platform_data *pdata = &state->pdata; 2290 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 }; 2291 struct device_node *ep; 2292 struct device_node *np; 2293 unsigned int flags; 2294 const char *str; 2295 int ret; 2296 u32 v; 2297 2298 /* 2299 * setup default values: 2300 * - HREF: active high from start to end of row 2301 * - VS: Vertical Sync active high at beginning of frame 2302 * - DE: Active high when data valid 2303 * - A_CLK: 128*Fs 2304 */ 2305 pdata->vidout_sel_hs = HS_HREF_SEL_HREF_VHREF; 2306 pdata->vidout_sel_vs = VS_VREF_SEL_VREF_HDMI; 2307 pdata->vidout_sel_de = DE_FREF_SEL_DE_VHREF; 2308 2309 np = state->client->dev.of_node; 2310 ep = of_graph_get_next_endpoint(np, NULL); 2311 if (!ep) 2312 return -EINVAL; 2313 2314 ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg); 2315 if (ret) { 2316 of_node_put(ep); 2317 return ret; 2318 } 2319 of_node_put(ep); 2320 pdata->vidout_bus_type = bus_cfg.bus_type; 2321 2322 /* polarity of HS/VS/DE */ 2323 flags = bus_cfg.bus.parallel.flags; 2324 if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) 2325 pdata->vidout_inv_hs = 1; 2326 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) 2327 pdata->vidout_inv_vs = 1; 2328 if (flags & V4L2_MBUS_DATA_ACTIVE_LOW) 2329 pdata->vidout_inv_de = 1; 2330 pdata->vidout_bus_width = bus_cfg.bus.parallel.bus_width; 2331 2332 /* video output port config */ 2333 ret = of_property_count_u32_elems(np, "nxp,vidout-portcfg"); 2334 if (ret > 0) { 2335 u32 reg, val, i; 2336 2337 for (i = 0; i < ret / 2 && i < 9; i++) { 2338 of_property_read_u32_index(np, "nxp,vidout-portcfg", 2339 i * 2, ®); 2340 of_property_read_u32_index(np, "nxp,vidout-portcfg", 2341 i * 2 + 1, &val); 2342 if (reg < 9) 2343 pdata->vidout_port_cfg[reg] = val; 2344 } 2345 } else { 2346 v4l_err(state->client, "nxp,vidout-portcfg missing\n"); 2347 return -EINVAL; 2348 } 2349 2350 /* default to channel layout dictated by packet header */ 2351 pdata->audout_layoutauto = true; 2352 2353 pdata->audout_format = AUDFMT_TYPE_DISABLED; 2354 if (!of_property_read_string(np, "nxp,audout-format", &str)) { 2355 if (strcmp(str, "i2s") == 0) 2356 pdata->audout_format = AUDFMT_TYPE_I2S; 2357 else if (strcmp(str, "spdif") == 0) 2358 pdata->audout_format = AUDFMT_TYPE_SPDIF; 2359 else { 2360 v4l_err(state->client, "nxp,audout-format invalid\n"); 2361 return -EINVAL; 2362 } 2363 if (!of_property_read_u32(np, "nxp,audout-layout", &v)) { 2364 switch (v) { 2365 case 0: 2366 case 1: 2367 break; 2368 default: 2369 v4l_err(state->client, 2370 "nxp,audout-layout invalid\n"); 2371 return -EINVAL; 2372 } 2373 pdata->audout_layout = v; 2374 } 2375 if (!of_property_read_u32(np, "nxp,audout-width", &v)) { 2376 switch (v) { 2377 case 16: 2378 case 32: 2379 break; 2380 default: 2381 v4l_err(state->client, 2382 "nxp,audout-width invalid\n"); 2383 return -EINVAL; 2384 } 2385 pdata->audout_width = v; 2386 } 2387 if (!of_property_read_u32(np, "nxp,audout-mclk-fs", &v)) { 2388 switch (v) { 2389 case 512: 2390 case 256: 2391 case 128: 2392 case 64: 2393 case 32: 2394 case 16: 2395 break; 2396 default: 2397 v4l_err(state->client, 2398 "nxp,audout-mclk-fs invalid\n"); 2399 return -EINVAL; 2400 } 2401 pdata->audout_mclk_fs = v; 2402 } 2403 } 2404 2405 return 0; 2406 } 2407 2408 static int tda1997x_get_regulators(struct tda1997x_state *state) 2409 { 2410 int i; 2411 2412 for (i = 0; i < TDA1997X_NUM_SUPPLIES; i++) 2413 state->supplies[i].supply = tda1997x_supply_name[i]; 2414 2415 return devm_regulator_bulk_get(&state->client->dev, 2416 TDA1997X_NUM_SUPPLIES, 2417 state->supplies); 2418 } 2419 2420 static int tda1997x_identify_module(struct tda1997x_state *state) 2421 { 2422 struct v4l2_subdev *sd = &state->sd; 2423 enum tda1997x_type type; 2424 u8 reg; 2425 2426 /* Read chip configuration*/ 2427 reg = io_read(sd, REG_CMTP_REG10); 2428 state->tmdsb_clk = (reg >> 6) & 0x01; /* use tmds clock B_inv for B */ 2429 state->tmdsb_soc = (reg >> 5) & 0x01; /* tmds of input B */ 2430 state->port_30bit = (reg >> 2) & 0x03; /* 30bit vs 24bit */ 2431 state->output_2p5 = (reg >> 1) & 0x01; /* output supply 2.5v */ 2432 switch ((reg >> 4) & 0x03) { 2433 case 0x00: 2434 type = TDA19971; 2435 break; 2436 case 0x02: 2437 case 0x03: 2438 type = TDA19973; 2439 break; 2440 default: 2441 dev_err(&state->client->dev, "unsupported chip ID\n"); 2442 return -EIO; 2443 } 2444 if (state->info->type != type) { 2445 dev_err(&state->client->dev, "chip id mismatch\n"); 2446 return -EIO; 2447 } 2448 2449 /* read chip revision */ 2450 state->chip_revision = io_read(sd, REG_CMTP_REG11); 2451 2452 return 0; 2453 } 2454 2455 static const struct media_entity_operations tda1997x_media_ops = { 2456 .link_validate = v4l2_subdev_link_validate, 2457 }; 2458 2459 2460 /* ----------------------------------------------------------------------------- 2461 * HDMI Audio Codec 2462 */ 2463 2464 /* refine sample-rate based on HDMI source */ 2465 static int tda1997x_pcm_startup(struct snd_pcm_substream *substream, 2466 struct snd_soc_dai *dai) 2467 { 2468 struct v4l2_subdev *sd = snd_soc_dai_get_drvdata(dai); 2469 struct tda1997x_state *state = to_state(sd); 2470 struct snd_soc_component *component = dai->component; 2471 struct snd_pcm_runtime *rtd = substream->runtime; 2472 int rate, err; 2473 2474 rate = state->audio_samplerate; 2475 err = snd_pcm_hw_constraint_minmax(rtd, SNDRV_PCM_HW_PARAM_RATE, 2476 rate, rate); 2477 if (err < 0) { 2478 dev_err(component->dev, "failed to constrain samplerate to %dHz\n", 2479 rate); 2480 return err; 2481 } 2482 dev_info(component->dev, "set samplerate constraint to %dHz\n", rate); 2483 2484 return 0; 2485 } 2486 2487 static const struct snd_soc_dai_ops tda1997x_dai_ops = { 2488 .startup = tda1997x_pcm_startup, 2489 }; 2490 2491 static struct snd_soc_dai_driver tda1997x_audio_dai = { 2492 .name = "tda1997x", 2493 .capture = { 2494 .stream_name = "Capture", 2495 .channels_min = 2, 2496 .channels_max = 8, 2497 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | 2498 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | 2499 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | 2500 SNDRV_PCM_RATE_192000, 2501 }, 2502 .ops = &tda1997x_dai_ops, 2503 }; 2504 2505 static int tda1997x_codec_probe(struct snd_soc_component *component) 2506 { 2507 return 0; 2508 } 2509 2510 static void tda1997x_codec_remove(struct snd_soc_component *component) 2511 { 2512 } 2513 2514 static struct snd_soc_component_driver tda1997x_codec_driver = { 2515 .probe = tda1997x_codec_probe, 2516 .remove = tda1997x_codec_remove, 2517 .idle_bias_on = 1, 2518 .use_pmdown_time = 1, 2519 .endianness = 1, 2520 }; 2521 2522 static int tda1997x_probe(struct i2c_client *client) 2523 { 2524 const struct i2c_device_id *id = i2c_client_get_device_id(client); 2525 struct tda1997x_state *state; 2526 struct tda1997x_platform_data *pdata; 2527 struct v4l2_subdev *sd; 2528 struct v4l2_ctrl_handler *hdl; 2529 struct v4l2_ctrl *ctrl; 2530 static const struct v4l2_dv_timings cea1920x1080 = 2531 V4L2_DV_BT_CEA_1920X1080P60; 2532 u32 *mbus_codes; 2533 int i, ret; 2534 2535 /* Check if the adapter supports the needed features */ 2536 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 2537 return -EIO; 2538 2539 state = kzalloc(sizeof(struct tda1997x_state), GFP_KERNEL); 2540 if (!state) 2541 return -ENOMEM; 2542 2543 state->client = client; 2544 pdata = &state->pdata; 2545 if (IS_ENABLED(CONFIG_OF) && client->dev.of_node) { 2546 const struct of_device_id *oid; 2547 2548 oid = of_match_node(tda1997x_of_id, client->dev.of_node); 2549 state->info = oid->data; 2550 2551 ret = tda1997x_parse_dt(state); 2552 if (ret < 0) { 2553 v4l_err(client, "DT parsing error\n"); 2554 goto err_free_state; 2555 } 2556 } else if (client->dev.platform_data) { 2557 struct tda1997x_platform_data *pdata = 2558 client->dev.platform_data; 2559 state->info = 2560 (const struct tda1997x_chip_info *)id->driver_data; 2561 state->pdata = *pdata; 2562 } else { 2563 v4l_err(client, "No platform data\n"); 2564 ret = -ENODEV; 2565 goto err_free_state; 2566 } 2567 2568 ret = tda1997x_get_regulators(state); 2569 if (ret) 2570 goto err_free_state; 2571 2572 ret = tda1997x_set_power(state, 1); 2573 if (ret) 2574 goto err_free_state; 2575 2576 mutex_init(&state->page_lock); 2577 mutex_init(&state->lock); 2578 state->page = 0xff; 2579 2580 INIT_DELAYED_WORK(&state->delayed_work_enable_hpd, 2581 tda1997x_delayed_work_enable_hpd); 2582 2583 /* set video format based on chip and bus width */ 2584 ret = tda1997x_identify_module(state); 2585 if (ret) 2586 goto err_free_mutex; 2587 2588 /* initialize subdev */ 2589 sd = &state->sd; 2590 v4l2_i2c_subdev_init(sd, client, &tda1997x_subdev_ops); 2591 snprintf(sd->name, sizeof(sd->name), "%s %d-%04x", 2592 id->name, i2c_adapter_id(client->adapter), 2593 client->addr); 2594 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS; 2595 sd->entity.function = MEDIA_ENT_F_DV_DECODER; 2596 sd->entity.ops = &tda1997x_media_ops; 2597 2598 /* set allowed mbus modes based on chip, bus-type, and bus-width */ 2599 i = 0; 2600 mbus_codes = state->mbus_codes; 2601 switch (state->info->type) { 2602 case TDA19973: 2603 switch (pdata->vidout_bus_type) { 2604 case V4L2_MBUS_PARALLEL: 2605 switch (pdata->vidout_bus_width) { 2606 case 36: 2607 mbus_codes[i++] = MEDIA_BUS_FMT_RGB121212_1X36; 2608 mbus_codes[i++] = MEDIA_BUS_FMT_YUV12_1X36; 2609 fallthrough; 2610 case 24: 2611 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_1X24; 2612 break; 2613 } 2614 break; 2615 case V4L2_MBUS_BT656: 2616 switch (pdata->vidout_bus_width) { 2617 case 36: 2618 case 24: 2619 case 12: 2620 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_2X12; 2621 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY10_2X10; 2622 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY8_2X8; 2623 break; 2624 } 2625 break; 2626 default: 2627 break; 2628 } 2629 break; 2630 case TDA19971: 2631 switch (pdata->vidout_bus_type) { 2632 case V4L2_MBUS_PARALLEL: 2633 switch (pdata->vidout_bus_width) { 2634 case 24: 2635 mbus_codes[i++] = MEDIA_BUS_FMT_RGB888_1X24; 2636 mbus_codes[i++] = MEDIA_BUS_FMT_YUV8_1X24; 2637 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_1X24; 2638 fallthrough; 2639 case 20: 2640 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY10_1X20; 2641 fallthrough; 2642 case 16: 2643 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY8_1X16; 2644 break; 2645 } 2646 break; 2647 case V4L2_MBUS_BT656: 2648 switch (pdata->vidout_bus_width) { 2649 case 24: 2650 case 20: 2651 case 16: 2652 case 12: 2653 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY12_2X12; 2654 fallthrough; 2655 case 10: 2656 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY10_2X10; 2657 fallthrough; 2658 case 8: 2659 mbus_codes[i++] = MEDIA_BUS_FMT_UYVY8_2X8; 2660 break; 2661 } 2662 break; 2663 default: 2664 break; 2665 } 2666 break; 2667 } 2668 if (WARN_ON(i > ARRAY_SIZE(state->mbus_codes))) { 2669 ret = -EINVAL; 2670 goto err_free_mutex; 2671 } 2672 2673 /* default format */ 2674 tda1997x_setup_format(state, state->mbus_codes[0]); 2675 state->timings = cea1920x1080; 2676 2677 /* 2678 * default to SRGB full range quantization 2679 * (in case we don't get an infoframe such as DVI signal 2680 */ 2681 state->colorimetry.colorspace = V4L2_COLORSPACE_SRGB; 2682 state->colorimetry.quantization = V4L2_QUANTIZATION_FULL_RANGE; 2683 2684 /* disable/reset HDCP to get correct I2C access to Rx HDMI */ 2685 io_write(sd, REG_MAN_SUS_HDMI_SEL, MAN_RST_HDCP | MAN_DIS_HDCP); 2686 2687 /* 2688 * if N2 version, reset compdel_bp as it may generate some small pixel 2689 * shifts in case of embedded sync/or delay lower than 4 2690 */ 2691 if (state->chip_revision != 0) { 2692 io_write(sd, REG_MAN_SUS_HDMI_SEL, 0x00); 2693 io_write(sd, REG_VDP_CTRL, 0x1f); 2694 } 2695 2696 v4l_info(client, "NXP %s N%d detected\n", state->info->name, 2697 state->chip_revision + 1); 2698 v4l_info(client, "video: %dbit %s %d formats available\n", 2699 pdata->vidout_bus_width, 2700 (pdata->vidout_bus_type == V4L2_MBUS_PARALLEL) ? 2701 "parallel" : "BT656", 2702 i); 2703 if (pdata->audout_format) { 2704 v4l_info(client, "audio: %dch %s layout%d sysclk=%d*fs\n", 2705 pdata->audout_layout ? 2 : 8, 2706 audfmt_names[pdata->audout_format], 2707 pdata->audout_layout, 2708 pdata->audout_mclk_fs); 2709 } 2710 2711 ret = 0x34 + ((io_read(sd, REG_SLAVE_ADDR)>>4) & 0x03); 2712 state->client_cec = devm_i2c_new_dummy_device(&client->dev, 2713 client->adapter, ret); 2714 if (IS_ERR(state->client_cec)) { 2715 ret = PTR_ERR(state->client_cec); 2716 goto err_free_mutex; 2717 } 2718 2719 v4l_info(client, "CEC slave address 0x%02x\n", ret); 2720 2721 ret = tda1997x_core_init(sd); 2722 if (ret) 2723 goto err_free_mutex; 2724 2725 /* control handlers */ 2726 hdl = &state->hdl; 2727 v4l2_ctrl_handler_init(hdl, 3); 2728 ctrl = v4l2_ctrl_new_std_menu(hdl, &tda1997x_ctrl_ops, 2729 V4L2_CID_DV_RX_IT_CONTENT_TYPE, 2730 V4L2_DV_IT_CONTENT_TYPE_NO_ITC, 0, 2731 V4L2_DV_IT_CONTENT_TYPE_NO_ITC); 2732 if (ctrl) 2733 ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE; 2734 /* custom controls */ 2735 state->detect_tx_5v_ctrl = v4l2_ctrl_new_std(hdl, NULL, 2736 V4L2_CID_DV_RX_POWER_PRESENT, 0, 1, 0, 0); 2737 state->rgb_quantization_range_ctrl = v4l2_ctrl_new_std_menu(hdl, 2738 &tda1997x_ctrl_ops, 2739 V4L2_CID_DV_RX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL, 0, 2740 V4L2_DV_RGB_RANGE_AUTO); 2741 state->sd.ctrl_handler = hdl; 2742 if (hdl->error) { 2743 ret = hdl->error; 2744 goto err_free_handler; 2745 } 2746 v4l2_ctrl_handler_setup(hdl); 2747 2748 /* initialize source pads */ 2749 state->pads[TDA1997X_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; 2750 ret = media_entity_pads_init(&sd->entity, TDA1997X_NUM_PADS, 2751 state->pads); 2752 if (ret) { 2753 v4l_err(client, "failed entity_init: %d", ret); 2754 goto err_free_handler; 2755 } 2756 2757 ret = v4l2_async_register_subdev(sd); 2758 if (ret) 2759 goto err_free_media; 2760 2761 /* register audio DAI */ 2762 if (pdata->audout_format) { 2763 u64 formats; 2764 2765 if (pdata->audout_width == 32) 2766 formats = SNDRV_PCM_FMTBIT_S32_LE; 2767 else 2768 formats = SNDRV_PCM_FMTBIT_S16_LE; 2769 tda1997x_audio_dai.capture.formats = formats; 2770 ret = devm_snd_soc_register_component(&state->client->dev, 2771 &tda1997x_codec_driver, 2772 &tda1997x_audio_dai, 1); 2773 if (ret) { 2774 dev_err(&client->dev, "register audio codec failed\n"); 2775 goto err_free_media; 2776 } 2777 v4l_info(state->client, "registered audio codec\n"); 2778 } 2779 2780 /* request irq */ 2781 ret = devm_request_threaded_irq(&client->dev, client->irq, 2782 NULL, tda1997x_isr_thread, 2783 IRQF_TRIGGER_LOW | IRQF_ONESHOT, 2784 KBUILD_MODNAME, state); 2785 if (ret) { 2786 v4l_err(client, "irq%d reg failed: %d\n", client->irq, ret); 2787 goto err_free_media; 2788 } 2789 2790 return 0; 2791 2792 err_free_media: 2793 media_entity_cleanup(&sd->entity); 2794 err_free_handler: 2795 v4l2_ctrl_handler_free(&state->hdl); 2796 err_free_mutex: 2797 cancel_delayed_work(&state->delayed_work_enable_hpd); 2798 mutex_destroy(&state->page_lock); 2799 mutex_destroy(&state->lock); 2800 tda1997x_set_power(state, 0); 2801 err_free_state: 2802 kfree(state); 2803 dev_err(&client->dev, "%s failed: %d\n", __func__, ret); 2804 2805 return ret; 2806 } 2807 2808 static void tda1997x_remove(struct i2c_client *client) 2809 { 2810 struct v4l2_subdev *sd = i2c_get_clientdata(client); 2811 struct tda1997x_state *state = to_state(sd); 2812 struct tda1997x_platform_data *pdata = &state->pdata; 2813 2814 if (pdata->audout_format) { 2815 mutex_destroy(&state->audio_lock); 2816 } 2817 2818 disable_irq(state->client->irq); 2819 tda1997x_power_mode(state, 0); 2820 2821 v4l2_async_unregister_subdev(sd); 2822 media_entity_cleanup(&sd->entity); 2823 v4l2_ctrl_handler_free(&state->hdl); 2824 regulator_bulk_disable(TDA1997X_NUM_SUPPLIES, state->supplies); 2825 cancel_delayed_work_sync(&state->delayed_work_enable_hpd); 2826 mutex_destroy(&state->page_lock); 2827 mutex_destroy(&state->lock); 2828 2829 kfree(state); 2830 } 2831 2832 static struct i2c_driver tda1997x_i2c_driver = { 2833 .driver = { 2834 .name = "tda1997x", 2835 .of_match_table = of_match_ptr(tda1997x_of_id), 2836 }, 2837 .probe_new = tda1997x_probe, 2838 .remove = tda1997x_remove, 2839 .id_table = tda1997x_i2c_id, 2840 }; 2841 2842 module_i2c_driver(tda1997x_i2c_driver); 2843 2844 MODULE_AUTHOR("Tim Harvey <tharvey@gateworks.com>"); 2845 MODULE_DESCRIPTION("TDA1997X HDMI Receiver driver"); 2846 MODULE_LICENSE("GPL v2"); 2847