1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * DesignWare High-Definition Multimedia Interface (HDMI) driver 4 * 5 * Copyright (C) 2013-2015 Mentor Graphics Inc. 6 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. 7 * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> 8 */ 9#include <linux/clk.h> 10#include <linux/delay.h> 11#include <linux/err.h> 12#include <linux/hdmi.h> 13#include <linux/i2c.h> 14#include <linux/irq.h> 15#include <linux/module.h> 16#include <linux/mutex.h> 17#include <linux/of.h> 18#include <linux/pinctrl/consumer.h> 19#include <linux/regmap.h> 20#include <linux/dma-mapping.h> 21#include <linux/spinlock.h> 22 23#include <media/cec-notifier.h> 24 25#include <uapi/linux/media-bus-format.h> 26#include <uapi/linux/videodev2.h> 27 28#include <drm/bridge/dw_hdmi.h> 29#include <drm/display/drm_hdmi_helper.h> 30#include <drm/display/drm_scdc_helper.h> 31#include <drm/drm_atomic.h> 32#include <drm/drm_atomic_helper.h> 33#include <drm/drm_bridge.h> 34#include <drm/drm_edid.h> 35#include <drm/drm_of.h> 36#include <drm/drm_print.h> 37#include <drm/drm_probe_helper.h> 38 39#include "dw-hdmi-audio.h" 40#include "dw-hdmi-cec.h" 41#include "dw-hdmi.h" 42 43#define DDC_CI_ADDR 0x37 44#define DDC_SEGMENT_ADDR 0x30 45 46#define HDMI_EDID_LEN 512 47 48/* DW-HDMI Controller >= 0x200a are at least compliant with SCDC version 1 */ 49#define SCDC_MIN_SOURCE_VERSION 0x1 50 51#define HDMI14_MAX_TMDSCLK 340000000 52 53static const u16 csc_coeff_default[3][4] = { 54 { 0x2000, 0x0000, 0x0000, 0x0000 }, 55 { 0x0000, 0x2000, 0x0000, 0x0000 }, 56 { 0x0000, 0x0000, 0x2000, 0x0000 } 57}; 58 59static const u16 csc_coeff_rgb_out_eitu601[3][4] = { 60 { 0x2000, 0x6926, 0x74fd, 0x010e }, 61 { 0x2000, 0x2cdd, 0x0000, 0x7e9a }, 62 { 0x2000, 0x0000, 0x38b4, 0x7e3b } 63}; 64 65static const u16 csc_coeff_rgb_out_eitu709[3][4] = { 66 { 0x2000, 0x7106, 0x7a02, 0x00a7 }, 67 { 0x2000, 0x3264, 0x0000, 0x7e6d }, 68 { 0x2000, 0x0000, 0x3b61, 0x7e25 } 69}; 70 71static const u16 csc_coeff_rgb_in_eitu601[3][4] = { 72 { 0x2591, 0x1322, 0x074b, 0x0000 }, 73 { 0x6535, 0x2000, 0x7acc, 0x0200 }, 74 { 0x6acd, 0x7534, 0x2000, 0x0200 } 75}; 76 77static const u16 csc_coeff_rgb_in_eitu709[3][4] = { 78 { 0x2dc5, 0x0d9b, 0x049e, 0x0000 }, 79 { 0x62f0, 0x2000, 0x7d11, 0x0200 }, 80 { 0x6756, 0x78ab, 0x2000, 0x0200 } 81}; 82 83static const u16 csc_coeff_rgb_full_to_rgb_limited[3][4] = { 84 { 0x1b7c, 0x0000, 0x0000, 0x0020 }, 85 { 0x0000, 0x1b7c, 0x0000, 0x0020 }, 86 { 0x0000, 0x0000, 0x1b7c, 0x0020 } 87}; 88 89struct hdmi_vmode { 90 bool mdataenablepolarity; 91 92 unsigned int mpixelclock; 93 unsigned int mpixelrepetitioninput; 94 unsigned int mpixelrepetitionoutput; 95 unsigned int mtmdsclock; 96}; 97 98struct hdmi_data_info { 99 unsigned int enc_in_bus_format; 100 unsigned int enc_out_bus_format; 101 unsigned int enc_in_encoding; 102 unsigned int enc_out_encoding; 103 unsigned int pix_repet_factor; 104 unsigned int hdcp_enable; 105 struct hdmi_vmode video_mode; 106 bool rgb_limited_range; 107}; 108 109struct dw_hdmi_i2c { 110 struct i2c_adapter adap; 111 112 struct mutex lock; /* used to serialize data transfers */ 113 struct completion cmp; 114 u8 stat; 115 116 u8 slave_reg; 117 bool is_regaddr; 118 bool is_segment; 119}; 120 121struct dw_hdmi_phy_data { 122 enum dw_hdmi_phy_type type; 123 const char *name; 124 unsigned int gen; 125 bool has_svsret; 126 int (*configure)(struct dw_hdmi *hdmi, 127 const struct dw_hdmi_plat_data *pdata, 128 unsigned long mpixelclock); 129}; 130 131struct dw_hdmi { 132 struct drm_connector connector; 133 struct drm_bridge bridge; 134 struct drm_bridge *next_bridge; 135 136 unsigned int version; 137 138 struct platform_device *audio; 139 struct platform_device *cec; 140 struct device *dev; 141 struct clk *isfr_clk; 142 struct clk *iahb_clk; 143 struct clk *cec_clk; 144 struct dw_hdmi_i2c *i2c; 145 146 struct hdmi_data_info hdmi_data; 147 const struct dw_hdmi_plat_data *plat_data; 148 149 int vic; 150 151 u8 edid[HDMI_EDID_LEN]; 152 153 struct { 154 const struct dw_hdmi_phy_ops *ops; 155 const char *name; 156 void *data; 157 bool enabled; 158 } phy; 159 160 struct drm_display_mode previous_mode; 161 162 struct i2c_adapter *ddc; 163 void __iomem *regs; 164 bool sink_is_hdmi; 165 bool sink_has_audio; 166 167 struct pinctrl *pinctrl; 168 struct pinctrl_state *default_state; 169 struct pinctrl_state *unwedge_state; 170 171 struct mutex mutex; /* for state below and previous_mode */ 172 enum drm_connector_force force; /* mutex-protected force state */ 173 struct drm_connector *curr_conn;/* current connector (only valid when !disabled) */ 174 bool disabled; /* DRM has disabled our bridge */ 175 bool bridge_is_on; /* indicates the bridge is on */ 176 bool rxsense; /* rxsense state */ 177 u8 phy_mask; /* desired phy int mask settings */ 178 u8 mc_clkdis; /* clock disable register */ 179 180 spinlock_t audio_lock; 181 struct mutex audio_mutex; 182 unsigned int sample_non_pcm; 183 unsigned int sample_width; 184 unsigned int sample_rate; 185 unsigned int channels; 186 unsigned int audio_cts; 187 unsigned int audio_n; 188 bool audio_enable; 189 190 unsigned int reg_shift; 191 struct regmap *regm; 192 void (*enable_audio)(struct dw_hdmi *hdmi); 193 void (*disable_audio)(struct dw_hdmi *hdmi); 194 195 struct mutex cec_notifier_mutex; 196 struct cec_notifier *cec_notifier; 197 198 hdmi_codec_plugged_cb plugged_cb; 199 struct device *codec_dev; 200 enum drm_connector_status last_connector_result; 201}; 202 203#define HDMI_IH_PHY_STAT0_RX_SENSE \ 204 (HDMI_IH_PHY_STAT0_RX_SENSE0 | HDMI_IH_PHY_STAT0_RX_SENSE1 | \ 205 HDMI_IH_PHY_STAT0_RX_SENSE2 | HDMI_IH_PHY_STAT0_RX_SENSE3) 206 207#define HDMI_PHY_RX_SENSE \ 208 (HDMI_PHY_RX_SENSE0 | HDMI_PHY_RX_SENSE1 | \ 209 HDMI_PHY_RX_SENSE2 | HDMI_PHY_RX_SENSE3) 210 211static inline void hdmi_writeb(struct dw_hdmi *hdmi, u8 val, int offset) 212{ 213 regmap_write(hdmi->regm, offset << hdmi->reg_shift, val); 214} 215 216static inline u8 hdmi_readb(struct dw_hdmi *hdmi, int offset) 217{ 218 unsigned int val = 0; 219 220 regmap_read(hdmi->regm, offset << hdmi->reg_shift, &val); 221 222 return val; 223} 224 225static void handle_plugged_change(struct dw_hdmi *hdmi, bool plugged) 226{ 227 if (hdmi->plugged_cb && hdmi->codec_dev) 228 hdmi->plugged_cb(hdmi->codec_dev, plugged); 229} 230 231int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn, 232 struct device *codec_dev) 233{ 234 bool plugged; 235 236 mutex_lock(&hdmi->mutex); 237 hdmi->plugged_cb = fn; 238 hdmi->codec_dev = codec_dev; 239 plugged = hdmi->last_connector_result == connector_status_connected; 240 handle_plugged_change(hdmi, plugged); 241 mutex_unlock(&hdmi->mutex); 242 243 return 0; 244} 245EXPORT_SYMBOL_GPL(dw_hdmi_set_plugged_cb); 246 247static void hdmi_modb(struct dw_hdmi *hdmi, u8 data, u8 mask, unsigned reg) 248{ 249 regmap_update_bits(hdmi->regm, reg << hdmi->reg_shift, mask, data); 250} 251 252static void hdmi_mask_writeb(struct dw_hdmi *hdmi, u8 data, unsigned int reg, 253 u8 shift, u8 mask) 254{ 255 hdmi_modb(hdmi, data << shift, mask, reg); 256} 257 258static void dw_hdmi_i2c_init(struct dw_hdmi *hdmi) 259{ 260 hdmi_writeb(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL, 261 HDMI_PHY_I2CM_INT_ADDR); 262 263 hdmi_writeb(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL | 264 HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL, 265 HDMI_PHY_I2CM_CTLINT_ADDR); 266 267 /* Software reset */ 268 hdmi_writeb(hdmi, 0x00, HDMI_I2CM_SOFTRSTZ); 269 270 /* Set Standard Mode speed (determined to be 100KHz on iMX6) */ 271 hdmi_writeb(hdmi, 0x00, HDMI_I2CM_DIV); 272 273 /* Set done, not acknowledged and arbitration interrupt polarities */ 274 hdmi_writeb(hdmi, HDMI_I2CM_INT_DONE_POL, HDMI_I2CM_INT); 275 hdmi_writeb(hdmi, HDMI_I2CM_CTLINT_NAC_POL | HDMI_I2CM_CTLINT_ARB_POL, 276 HDMI_I2CM_CTLINT); 277 278 /* Clear DONE and ERROR interrupts */ 279 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE, 280 HDMI_IH_I2CM_STAT0); 281 282 /* Mute DONE and ERROR interrupts */ 283 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE, 284 HDMI_IH_MUTE_I2CM_STAT0); 285} 286 287static bool dw_hdmi_i2c_unwedge(struct dw_hdmi *hdmi) 288{ 289 /* If no unwedge state then give up */ 290 if (!hdmi->unwedge_state) 291 return false; 292 293 dev_info(hdmi->dev, "Attempting to unwedge stuck i2c bus\n"); 294 295 /* 296 * This is a huge hack to workaround a problem where the dw_hdmi i2c 297 * bus could sometimes get wedged. Once wedged there doesn't appear 298 * to be any way to unwedge it (including the HDMI_I2CM_SOFTRSTZ) 299 * other than pulsing the SDA line. 300 * 301 * We appear to be able to pulse the SDA line (in the eyes of dw_hdmi) 302 * by: 303 * 1. Remux the pin as a GPIO output, driven low. 304 * 2. Wait a little while. 1 ms seems to work, but we'll do 10. 305 * 3. Immediately jump to remux the pin as dw_hdmi i2c again. 306 * 307 * At the moment of remuxing, the line will still be low due to its 308 * recent stint as an output, but then it will be pulled high by the 309 * (presumed) external pullup. dw_hdmi seems to see this as a rising 310 * edge and that seems to get it out of its jam. 311 * 312 * This wedging was only ever seen on one TV, and only on one of 313 * its HDMI ports. It happened when the TV was powered on while the 314 * device was plugged in. A scope trace shows the TV bringing both SDA 315 * and SCL low, then bringing them both back up at roughly the same 316 * time. Presumably this confuses dw_hdmi because it saw activity but 317 * no real STOP (maybe it thinks there's another master on the bus?). 318 * Giving it a clean rising edge of SDA while SCL is already high 319 * presumably makes dw_hdmi see a STOP which seems to bring dw_hdmi out 320 * of its stupor. 321 * 322 * Note that after coming back alive, transfers seem to immediately 323 * resume, so if we unwedge due to a timeout we should wait a little 324 * longer for our transfer to finish, since it might have just started 325 * now. 326 */ 327 pinctrl_select_state(hdmi->pinctrl, hdmi->unwedge_state); 328 msleep(10); 329 pinctrl_select_state(hdmi->pinctrl, hdmi->default_state); 330 331 return true; 332} 333 334static int dw_hdmi_i2c_wait(struct dw_hdmi *hdmi) 335{ 336 struct dw_hdmi_i2c *i2c = hdmi->i2c; 337 int stat; 338 339 stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10); 340 if (!stat) { 341 /* If we can't unwedge, return timeout */ 342 if (!dw_hdmi_i2c_unwedge(hdmi)) 343 return -EAGAIN; 344 345 /* We tried to unwedge; give it another chance */ 346 stat = wait_for_completion_timeout(&i2c->cmp, HZ / 10); 347 if (!stat) 348 return -EAGAIN; 349 } 350 351 /* Check for error condition on the bus */ 352 if (i2c->stat & HDMI_IH_I2CM_STAT0_ERROR) 353 return -EIO; 354 355 return 0; 356} 357 358static int dw_hdmi_i2c_read(struct dw_hdmi *hdmi, 359 unsigned char *buf, unsigned int length) 360{ 361 struct dw_hdmi_i2c *i2c = hdmi->i2c; 362 int ret; 363 364 if (!i2c->is_regaddr) { 365 dev_dbg(hdmi->dev, "set read register address to 0\n"); 366 i2c->slave_reg = 0x00; 367 i2c->is_regaddr = true; 368 } 369 370 while (length--) { 371 reinit_completion(&i2c->cmp); 372 373 hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS); 374 if (i2c->is_segment) 375 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ_EXT, 376 HDMI_I2CM_OPERATION); 377 else 378 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_READ, 379 HDMI_I2CM_OPERATION); 380 381 ret = dw_hdmi_i2c_wait(hdmi); 382 if (ret) 383 return ret; 384 385 *buf++ = hdmi_readb(hdmi, HDMI_I2CM_DATAI); 386 } 387 i2c->is_segment = false; 388 389 return 0; 390} 391 392static int dw_hdmi_i2c_write(struct dw_hdmi *hdmi, 393 unsigned char *buf, unsigned int length) 394{ 395 struct dw_hdmi_i2c *i2c = hdmi->i2c; 396 int ret; 397 398 if (!i2c->is_regaddr) { 399 /* Use the first write byte as register address */ 400 i2c->slave_reg = buf[0]; 401 length--; 402 buf++; 403 i2c->is_regaddr = true; 404 } 405 406 while (length--) { 407 reinit_completion(&i2c->cmp); 408 409 hdmi_writeb(hdmi, *buf++, HDMI_I2CM_DATAO); 410 hdmi_writeb(hdmi, i2c->slave_reg++, HDMI_I2CM_ADDRESS); 411 hdmi_writeb(hdmi, HDMI_I2CM_OPERATION_WRITE, 412 HDMI_I2CM_OPERATION); 413 414 ret = dw_hdmi_i2c_wait(hdmi); 415 if (ret) 416 return ret; 417 } 418 419 return 0; 420} 421 422static int dw_hdmi_i2c_xfer(struct i2c_adapter *adap, 423 struct i2c_msg *msgs, int num) 424{ 425 struct dw_hdmi *hdmi = i2c_get_adapdata(adap); 426 struct dw_hdmi_i2c *i2c = hdmi->i2c; 427 u8 addr = msgs[0].addr; 428 int i, ret = 0; 429 430 if (addr == DDC_CI_ADDR) 431 /* 432 * The internal I2C controller does not support the multi-byte 433 * read and write operations needed for DDC/CI. 434 * TOFIX: Blacklist the DDC/CI address until we filter out 435 * unsupported I2C operations. 436 */ 437 return -EOPNOTSUPP; 438 439 dev_dbg(hdmi->dev, "xfer: num: %d, addr: %#x\n", num, addr); 440 441 for (i = 0; i < num; i++) { 442 if (msgs[i].len == 0) { 443 dev_dbg(hdmi->dev, 444 "unsupported transfer %d/%d, no data\n", 445 i + 1, num); 446 return -EOPNOTSUPP; 447 } 448 } 449 450 mutex_lock(&i2c->lock); 451 452 /* Unmute DONE and ERROR interrupts */ 453 hdmi_writeb(hdmi, 0x00, HDMI_IH_MUTE_I2CM_STAT0); 454 455 /* Set slave device address taken from the first I2C message */ 456 hdmi_writeb(hdmi, addr, HDMI_I2CM_SLAVE); 457 458 /* Set slave device register address on transfer */ 459 i2c->is_regaddr = false; 460 461 /* Set segment pointer for I2C extended read mode operation */ 462 i2c->is_segment = false; 463 464 for (i = 0; i < num; i++) { 465 dev_dbg(hdmi->dev, "xfer: num: %d/%d, len: %d, flags: %#x\n", 466 i + 1, num, msgs[i].len, msgs[i].flags); 467 if (msgs[i].addr == DDC_SEGMENT_ADDR && msgs[i].len == 1) { 468 i2c->is_segment = true; 469 hdmi_writeb(hdmi, DDC_SEGMENT_ADDR, HDMI_I2CM_SEGADDR); 470 hdmi_writeb(hdmi, *msgs[i].buf, HDMI_I2CM_SEGPTR); 471 } else { 472 if (msgs[i].flags & I2C_M_RD) 473 ret = dw_hdmi_i2c_read(hdmi, msgs[i].buf, 474 msgs[i].len); 475 else 476 ret = dw_hdmi_i2c_write(hdmi, msgs[i].buf, 477 msgs[i].len); 478 } 479 if (ret < 0) 480 break; 481 } 482 483 if (!ret) 484 ret = num; 485 486 /* Mute DONE and ERROR interrupts */ 487 hdmi_writeb(hdmi, HDMI_IH_I2CM_STAT0_ERROR | HDMI_IH_I2CM_STAT0_DONE, 488 HDMI_IH_MUTE_I2CM_STAT0); 489 490 mutex_unlock(&i2c->lock); 491 492 return ret; 493} 494 495static u32 dw_hdmi_i2c_func(struct i2c_adapter *adapter) 496{ 497 return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; 498} 499 500static const struct i2c_algorithm dw_hdmi_algorithm = { 501 .master_xfer = dw_hdmi_i2c_xfer, 502 .functionality = dw_hdmi_i2c_func, 503}; 504 505static struct i2c_adapter *dw_hdmi_i2c_adapter(struct dw_hdmi *hdmi) 506{ 507 struct i2c_adapter *adap; 508 struct dw_hdmi_i2c *i2c; 509 int ret; 510 511 i2c = devm_kzalloc(hdmi->dev, sizeof(*i2c), GFP_KERNEL); 512 if (!i2c) 513 return ERR_PTR(-ENOMEM); 514 515 mutex_init(&i2c->lock); 516 init_completion(&i2c->cmp); 517 518 adap = &i2c->adap; 519 adap->owner = THIS_MODULE; 520 adap->dev.parent = hdmi->dev; 521 adap->algo = &dw_hdmi_algorithm; 522 strscpy(adap->name, "DesignWare HDMI", sizeof(adap->name)); 523 i2c_set_adapdata(adap, hdmi); 524 525 ret = i2c_add_adapter(adap); 526 if (ret) { 527 dev_warn(hdmi->dev, "cannot add %s I2C adapter\n", adap->name); 528 devm_kfree(hdmi->dev, i2c); 529 return ERR_PTR(ret); 530 } 531 532 hdmi->i2c = i2c; 533 534 dev_info(hdmi->dev, "registered %s I2C bus driver\n", adap->name); 535 536 return adap; 537} 538 539static void hdmi_set_cts_n(struct dw_hdmi *hdmi, unsigned int cts, 540 unsigned int n) 541{ 542 /* Must be set/cleared first */ 543 hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_CTS_MANUAL, HDMI_AUD_CTS3); 544 545 /* nshift factor = 0 */ 546 hdmi_modb(hdmi, 0, HDMI_AUD_CTS3_N_SHIFT_MASK, HDMI_AUD_CTS3); 547 548 /* Use automatic CTS generation mode when CTS is not set */ 549 if (cts) 550 hdmi_writeb(hdmi, ((cts >> 16) & 551 HDMI_AUD_CTS3_AUDCTS19_16_MASK) | 552 HDMI_AUD_CTS3_CTS_MANUAL, 553 HDMI_AUD_CTS3); 554 else 555 hdmi_writeb(hdmi, 0, HDMI_AUD_CTS3); 556 hdmi_writeb(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2); 557 hdmi_writeb(hdmi, cts & 0xff, HDMI_AUD_CTS1); 558 559 hdmi_writeb(hdmi, (n >> 16) & 0x0f, HDMI_AUD_N3); 560 hdmi_writeb(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2); 561 hdmi_writeb(hdmi, n & 0xff, HDMI_AUD_N1); 562} 563 564static unsigned int hdmi_compute_n(unsigned int freq, unsigned long pixel_clk) 565{ 566 unsigned int n = (128 * freq) / 1000; 567 unsigned int mult = 1; 568 569 while (freq > 48000) { 570 mult *= 2; 571 freq /= 2; 572 } 573 574 switch (freq) { 575 case 32000: 576 if (pixel_clk == 25175000) 577 n = 4576; 578 else if (pixel_clk == 27027000) 579 n = 4096; 580 else if (pixel_clk == 74176000 || pixel_clk == 148352000) 581 n = 11648; 582 else if (pixel_clk == 297000000) 583 n = 3072; 584 else 585 n = 4096; 586 n *= mult; 587 break; 588 589 case 44100: 590 if (pixel_clk == 25175000) 591 n = 7007; 592 else if (pixel_clk == 74176000) 593 n = 17836; 594 else if (pixel_clk == 148352000) 595 n = 8918; 596 else if (pixel_clk == 297000000) 597 n = 4704; 598 else 599 n = 6272; 600 n *= mult; 601 break; 602 603 case 48000: 604 if (pixel_clk == 25175000) 605 n = 6864; 606 else if (pixel_clk == 27027000) 607 n = 6144; 608 else if (pixel_clk == 74176000) 609 n = 11648; 610 else if (pixel_clk == 148352000) 611 n = 5824; 612 else if (pixel_clk == 297000000) 613 n = 5120; 614 else 615 n = 6144; 616 n *= mult; 617 break; 618 619 default: 620 break; 621 } 622 623 return n; 624} 625 626/* 627 * When transmitting IEC60958 linear PCM audio, these registers allow to 628 * configure the channel status information of all the channel status 629 * bits in the IEC60958 frame. For the moment this configuration is only 630 * used when the I2S audio interface, General Purpose Audio (GPA), 631 * or AHB audio DMA (AHBAUDDMA) interface is active 632 * (for S/PDIF interface this information comes from the stream). 633 */ 634void dw_hdmi_set_channel_status(struct dw_hdmi *hdmi, 635 u8 *channel_status) 636{ 637 /* 638 * Set channel status register for frequency and word length. 639 * Use default values for other registers. 640 */ 641 hdmi_writeb(hdmi, channel_status[3], HDMI_FC_AUDSCHNLS7); 642 hdmi_writeb(hdmi, channel_status[4], HDMI_FC_AUDSCHNLS8); 643} 644EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_status); 645 646static void hdmi_set_clk_regenerator(struct dw_hdmi *hdmi, 647 unsigned long pixel_clk, unsigned int sample_rate) 648{ 649 unsigned long ftdms = pixel_clk; 650 unsigned int n, cts; 651 u8 config3; 652 u64 tmp; 653 654 n = hdmi_compute_n(sample_rate, pixel_clk); 655 656 config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID); 657 658 /* Compute CTS when using internal AHB audio or General Parallel audio*/ 659 if ((config3 & HDMI_CONFIG3_AHBAUDDMA) || (config3 & HDMI_CONFIG3_GPAUD)) { 660 /* 661 * Compute the CTS value from the N value. Note that CTS and N 662 * can be up to 20 bits in total, so we need 64-bit math. Also 663 * note that our TDMS clock is not fully accurate; it is 664 * accurate to kHz. This can introduce an unnecessary remainder 665 * in the calculation below, so we don't try to warn about that. 666 */ 667 tmp = (u64)ftdms * n; 668 do_div(tmp, 128 * sample_rate); 669 cts = tmp; 670 671 dev_dbg(hdmi->dev, "%s: fs=%uHz ftdms=%lu.%03luMHz N=%d cts=%d\n", 672 __func__, sample_rate, 673 ftdms / 1000000, (ftdms / 1000) % 1000, 674 n, cts); 675 } else { 676 cts = 0; 677 } 678 679 spin_lock_irq(&hdmi->audio_lock); 680 hdmi->audio_n = n; 681 hdmi->audio_cts = cts; 682 hdmi_set_cts_n(hdmi, cts, hdmi->audio_enable ? n : 0); 683 spin_unlock_irq(&hdmi->audio_lock); 684} 685 686static void hdmi_init_clk_regenerator(struct dw_hdmi *hdmi) 687{ 688 mutex_lock(&hdmi->audio_mutex); 689 hdmi_set_clk_regenerator(hdmi, 74250000, hdmi->sample_rate); 690 mutex_unlock(&hdmi->audio_mutex); 691} 692 693static void hdmi_clk_regenerator_update_pixel_clock(struct dw_hdmi *hdmi) 694{ 695 mutex_lock(&hdmi->audio_mutex); 696 hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock, 697 hdmi->sample_rate); 698 mutex_unlock(&hdmi->audio_mutex); 699} 700 701void dw_hdmi_set_sample_width(struct dw_hdmi *hdmi, unsigned int width) 702{ 703 mutex_lock(&hdmi->audio_mutex); 704 hdmi->sample_width = width; 705 mutex_unlock(&hdmi->audio_mutex); 706} 707EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_width); 708 709void dw_hdmi_set_sample_non_pcm(struct dw_hdmi *hdmi, unsigned int non_pcm) 710{ 711 mutex_lock(&hdmi->audio_mutex); 712 hdmi->sample_non_pcm = non_pcm; 713 mutex_unlock(&hdmi->audio_mutex); 714} 715EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_non_pcm); 716 717void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate) 718{ 719 mutex_lock(&hdmi->audio_mutex); 720 hdmi->sample_rate = rate; 721 hdmi_set_clk_regenerator(hdmi, hdmi->hdmi_data.video_mode.mtmdsclock, 722 hdmi->sample_rate); 723 mutex_unlock(&hdmi->audio_mutex); 724} 725EXPORT_SYMBOL_GPL(dw_hdmi_set_sample_rate); 726 727void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt) 728{ 729 u8 layout; 730 731 mutex_lock(&hdmi->audio_mutex); 732 hdmi->channels = cnt; 733 734 /* 735 * For >2 channel PCM audio, we need to select layout 1 736 * and set an appropriate channel map. 737 */ 738 if (cnt > 2) 739 layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT1; 740 else 741 layout = HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_LAYOUT0; 742 743 hdmi_modb(hdmi, layout, HDMI_FC_AUDSCONF_AUD_PACKET_LAYOUT_MASK, 744 HDMI_FC_AUDSCONF); 745 746 /* Set the audio infoframes channel count */ 747 hdmi_modb(hdmi, (cnt - 1) << HDMI_FC_AUDICONF0_CC_OFFSET, 748 HDMI_FC_AUDICONF0_CC_MASK, HDMI_FC_AUDICONF0); 749 750 mutex_unlock(&hdmi->audio_mutex); 751} 752EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_count); 753 754void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca) 755{ 756 mutex_lock(&hdmi->audio_mutex); 757 758 hdmi_writeb(hdmi, ca, HDMI_FC_AUDICONF2); 759 760 mutex_unlock(&hdmi->audio_mutex); 761} 762EXPORT_SYMBOL_GPL(dw_hdmi_set_channel_allocation); 763 764static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi, bool enable) 765{ 766 if (enable) 767 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE; 768 else 769 hdmi->mc_clkdis |= HDMI_MC_CLKDIS_AUDCLK_DISABLE; 770 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); 771} 772 773static u8 *hdmi_audio_get_eld(struct dw_hdmi *hdmi) 774{ 775 if (!hdmi->curr_conn) 776 return NULL; 777 778 return hdmi->curr_conn->eld; 779} 780 781static void dw_hdmi_gp_audio_enable(struct dw_hdmi *hdmi) 782{ 783 const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; 784 int sample_freq = 0x2, org_sample_freq = 0xD; 785 int ch_mask = BIT(hdmi->channels) - 1; 786 787 switch (hdmi->sample_rate) { 788 case 32000: 789 sample_freq = 0x03; 790 org_sample_freq = 0x0C; 791 break; 792 case 44100: 793 sample_freq = 0x00; 794 org_sample_freq = 0x0F; 795 break; 796 case 48000: 797 sample_freq = 0x02; 798 org_sample_freq = 0x0D; 799 break; 800 case 88200: 801 sample_freq = 0x08; 802 org_sample_freq = 0x07; 803 break; 804 case 96000: 805 sample_freq = 0x0A; 806 org_sample_freq = 0x05; 807 break; 808 case 176400: 809 sample_freq = 0x0C; 810 org_sample_freq = 0x03; 811 break; 812 case 192000: 813 sample_freq = 0x0E; 814 org_sample_freq = 0x01; 815 break; 816 default: 817 break; 818 } 819 820 hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n); 821 hdmi_enable_audio_clk(hdmi, true); 822 823 hdmi_writeb(hdmi, 0x1, HDMI_FC_AUDSCHNLS0); 824 hdmi_writeb(hdmi, hdmi->channels, HDMI_FC_AUDSCHNLS2); 825 hdmi_writeb(hdmi, 0x22, HDMI_FC_AUDSCHNLS3); 826 hdmi_writeb(hdmi, 0x22, HDMI_FC_AUDSCHNLS4); 827 hdmi_writeb(hdmi, 0x11, HDMI_FC_AUDSCHNLS5); 828 hdmi_writeb(hdmi, 0x11, HDMI_FC_AUDSCHNLS6); 829 hdmi_writeb(hdmi, (0x3 << 4) | sample_freq, HDMI_FC_AUDSCHNLS7); 830 hdmi_writeb(hdmi, (org_sample_freq << 4) | 0xb, HDMI_FC_AUDSCHNLS8); 831 832 hdmi_writeb(hdmi, ch_mask, HDMI_GP_CONF1); 833 hdmi_writeb(hdmi, 0x02, HDMI_GP_CONF2); 834 hdmi_writeb(hdmi, 0x01, HDMI_GP_CONF0); 835 836 hdmi_modb(hdmi, 0x3, 0x3, HDMI_FC_DATAUTO3); 837 838 /* hbr */ 839 if (hdmi->sample_rate == 192000 && hdmi->channels == 8 && 840 hdmi->sample_width == 32 && hdmi->sample_non_pcm) 841 hdmi_modb(hdmi, 0x01, 0x01, HDMI_GP_CONF2); 842 843 if (pdata->enable_audio) 844 pdata->enable_audio(hdmi, 845 hdmi->channels, 846 hdmi->sample_width, 847 hdmi->sample_rate, 848 hdmi->sample_non_pcm); 849} 850 851static void dw_hdmi_gp_audio_disable(struct dw_hdmi *hdmi) 852{ 853 const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; 854 855 hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0); 856 857 hdmi_modb(hdmi, 0, 0x3, HDMI_FC_DATAUTO3); 858 if (pdata->disable_audio) 859 pdata->disable_audio(hdmi); 860 861 hdmi_enable_audio_clk(hdmi, false); 862} 863 864static void dw_hdmi_ahb_audio_enable(struct dw_hdmi *hdmi) 865{ 866 hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n); 867} 868 869static void dw_hdmi_ahb_audio_disable(struct dw_hdmi *hdmi) 870{ 871 hdmi_set_cts_n(hdmi, hdmi->audio_cts, 0); 872} 873 874static void dw_hdmi_i2s_audio_enable(struct dw_hdmi *hdmi) 875{ 876 hdmi_set_cts_n(hdmi, hdmi->audio_cts, hdmi->audio_n); 877 hdmi_enable_audio_clk(hdmi, true); 878} 879 880static void dw_hdmi_i2s_audio_disable(struct dw_hdmi *hdmi) 881{ 882 hdmi_enable_audio_clk(hdmi, false); 883} 884 885void dw_hdmi_audio_enable(struct dw_hdmi *hdmi) 886{ 887 unsigned long flags; 888 889 spin_lock_irqsave(&hdmi->audio_lock, flags); 890 hdmi->audio_enable = true; 891 if (hdmi->enable_audio) 892 hdmi->enable_audio(hdmi); 893 spin_unlock_irqrestore(&hdmi->audio_lock, flags); 894} 895EXPORT_SYMBOL_GPL(dw_hdmi_audio_enable); 896 897void dw_hdmi_audio_disable(struct dw_hdmi *hdmi) 898{ 899 unsigned long flags; 900 901 spin_lock_irqsave(&hdmi->audio_lock, flags); 902 hdmi->audio_enable = false; 903 if (hdmi->disable_audio) 904 hdmi->disable_audio(hdmi); 905 spin_unlock_irqrestore(&hdmi->audio_lock, flags); 906} 907EXPORT_SYMBOL_GPL(dw_hdmi_audio_disable); 908 909static bool hdmi_bus_fmt_is_rgb(unsigned int bus_format) 910{ 911 switch (bus_format) { 912 case MEDIA_BUS_FMT_RGB888_1X24: 913 case MEDIA_BUS_FMT_RGB101010_1X30: 914 case MEDIA_BUS_FMT_RGB121212_1X36: 915 case MEDIA_BUS_FMT_RGB161616_1X48: 916 return true; 917 918 default: 919 return false; 920 } 921} 922 923static bool hdmi_bus_fmt_is_yuv444(unsigned int bus_format) 924{ 925 switch (bus_format) { 926 case MEDIA_BUS_FMT_YUV8_1X24: 927 case MEDIA_BUS_FMT_YUV10_1X30: 928 case MEDIA_BUS_FMT_YUV12_1X36: 929 case MEDIA_BUS_FMT_YUV16_1X48: 930 return true; 931 932 default: 933 return false; 934 } 935} 936 937static bool hdmi_bus_fmt_is_yuv422(unsigned int bus_format) 938{ 939 switch (bus_format) { 940 case MEDIA_BUS_FMT_UYVY8_1X16: 941 case MEDIA_BUS_FMT_UYVY10_1X20: 942 case MEDIA_BUS_FMT_UYVY12_1X24: 943 return true; 944 945 default: 946 return false; 947 } 948} 949 950static bool hdmi_bus_fmt_is_yuv420(unsigned int bus_format) 951{ 952 switch (bus_format) { 953 case MEDIA_BUS_FMT_UYYVYY8_0_5X24: 954 case MEDIA_BUS_FMT_UYYVYY10_0_5X30: 955 case MEDIA_BUS_FMT_UYYVYY12_0_5X36: 956 case MEDIA_BUS_FMT_UYYVYY16_0_5X48: 957 return true; 958 959 default: 960 return false; 961 } 962} 963 964static int hdmi_bus_fmt_color_depth(unsigned int bus_format) 965{ 966 switch (bus_format) { 967 case MEDIA_BUS_FMT_RGB888_1X24: 968 case MEDIA_BUS_FMT_YUV8_1X24: 969 case MEDIA_BUS_FMT_UYVY8_1X16: 970 case MEDIA_BUS_FMT_UYYVYY8_0_5X24: 971 return 8; 972 973 case MEDIA_BUS_FMT_RGB101010_1X30: 974 case MEDIA_BUS_FMT_YUV10_1X30: 975 case MEDIA_BUS_FMT_UYVY10_1X20: 976 case MEDIA_BUS_FMT_UYYVYY10_0_5X30: 977 return 10; 978 979 case MEDIA_BUS_FMT_RGB121212_1X36: 980 case MEDIA_BUS_FMT_YUV12_1X36: 981 case MEDIA_BUS_FMT_UYVY12_1X24: 982 case MEDIA_BUS_FMT_UYYVYY12_0_5X36: 983 return 12; 984 985 case MEDIA_BUS_FMT_RGB161616_1X48: 986 case MEDIA_BUS_FMT_YUV16_1X48: 987 case MEDIA_BUS_FMT_UYYVYY16_0_5X48: 988 return 16; 989 990 default: 991 return 0; 992 } 993} 994 995/* 996 * this submodule is responsible for the video data synchronization. 997 * for example, for RGB 4:4:4 input, the data map is defined as 998 * pin{47~40} <==> R[7:0] 999 * pin{31~24} <==> G[7:0] 1000 * pin{15~8} <==> B[7:0] 1001 */ 1002static void hdmi_video_sample(struct dw_hdmi *hdmi) 1003{ 1004 int color_format = 0; 1005 u8 val; 1006 1007 switch (hdmi->hdmi_data.enc_in_bus_format) { 1008 case MEDIA_BUS_FMT_RGB888_1X24: 1009 color_format = 0x01; 1010 break; 1011 case MEDIA_BUS_FMT_RGB101010_1X30: 1012 color_format = 0x03; 1013 break; 1014 case MEDIA_BUS_FMT_RGB121212_1X36: 1015 color_format = 0x05; 1016 break; 1017 case MEDIA_BUS_FMT_RGB161616_1X48: 1018 color_format = 0x07; 1019 break; 1020 1021 case MEDIA_BUS_FMT_YUV8_1X24: 1022 case MEDIA_BUS_FMT_UYYVYY8_0_5X24: 1023 color_format = 0x09; 1024 break; 1025 case MEDIA_BUS_FMT_YUV10_1X30: 1026 case MEDIA_BUS_FMT_UYYVYY10_0_5X30: 1027 color_format = 0x0B; 1028 break; 1029 case MEDIA_BUS_FMT_YUV12_1X36: 1030 case MEDIA_BUS_FMT_UYYVYY12_0_5X36: 1031 color_format = 0x0D; 1032 break; 1033 case MEDIA_BUS_FMT_YUV16_1X48: 1034 case MEDIA_BUS_FMT_UYYVYY16_0_5X48: 1035 color_format = 0x0F; 1036 break; 1037 1038 case MEDIA_BUS_FMT_UYVY8_1X16: 1039 color_format = 0x16; 1040 break; 1041 case MEDIA_BUS_FMT_UYVY10_1X20: 1042 color_format = 0x14; 1043 break; 1044 case MEDIA_BUS_FMT_UYVY12_1X24: 1045 color_format = 0x12; 1046 break; 1047 1048 default: 1049 return; 1050 } 1051 1052 val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE | 1053 ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) & 1054 HDMI_TX_INVID0_VIDEO_MAPPING_MASK); 1055 hdmi_writeb(hdmi, val, HDMI_TX_INVID0); 1056 1057 /* Enable TX stuffing: When DE is inactive, fix the output data to 0 */ 1058 val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE | 1059 HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE | 1060 HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE; 1061 hdmi_writeb(hdmi, val, HDMI_TX_INSTUFFING); 1062 hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA0); 1063 hdmi_writeb(hdmi, 0x0, HDMI_TX_GYDATA1); 1064 hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA0); 1065 hdmi_writeb(hdmi, 0x0, HDMI_TX_RCRDATA1); 1066 hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA0); 1067 hdmi_writeb(hdmi, 0x0, HDMI_TX_BCBDATA1); 1068} 1069 1070static int is_color_space_conversion(struct dw_hdmi *hdmi) 1071{ 1072 struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data; 1073 bool is_input_rgb, is_output_rgb; 1074 1075 is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_in_bus_format); 1076 is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi_data->enc_out_bus_format); 1077 1078 return (is_input_rgb != is_output_rgb) || 1079 (is_input_rgb && is_output_rgb && hdmi_data->rgb_limited_range); 1080} 1081 1082static int is_color_space_decimation(struct dw_hdmi *hdmi) 1083{ 1084 if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) 1085 return 0; 1086 1087 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format) || 1088 hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_in_bus_format)) 1089 return 1; 1090 1091 return 0; 1092} 1093 1094static int is_color_space_interpolation(struct dw_hdmi *hdmi) 1095{ 1096 if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_in_bus_format)) 1097 return 0; 1098 1099 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) || 1100 hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format)) 1101 return 1; 1102 1103 return 0; 1104} 1105 1106static bool is_csc_needed(struct dw_hdmi *hdmi) 1107{ 1108 return is_color_space_conversion(hdmi) || 1109 is_color_space_decimation(hdmi) || 1110 is_color_space_interpolation(hdmi); 1111} 1112 1113static void dw_hdmi_update_csc_coeffs(struct dw_hdmi *hdmi) 1114{ 1115 const u16 (*csc_coeff)[3][4] = &csc_coeff_default; 1116 bool is_input_rgb, is_output_rgb; 1117 unsigned i; 1118 u32 csc_scale = 1; 1119 1120 is_input_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_in_bus_format); 1121 is_output_rgb = hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format); 1122 1123 if (!is_input_rgb && is_output_rgb) { 1124 if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601) 1125 csc_coeff = &csc_coeff_rgb_out_eitu601; 1126 else 1127 csc_coeff = &csc_coeff_rgb_out_eitu709; 1128 } else if (is_input_rgb && !is_output_rgb) { 1129 if (hdmi->hdmi_data.enc_out_encoding == V4L2_YCBCR_ENC_601) 1130 csc_coeff = &csc_coeff_rgb_in_eitu601; 1131 else 1132 csc_coeff = &csc_coeff_rgb_in_eitu709; 1133 csc_scale = 0; 1134 } else if (is_input_rgb && is_output_rgb && 1135 hdmi->hdmi_data.rgb_limited_range) { 1136 csc_coeff = &csc_coeff_rgb_full_to_rgb_limited; 1137 } 1138 1139 /* The CSC registers are sequential, alternating MSB then LSB */ 1140 for (i = 0; i < ARRAY_SIZE(csc_coeff_default[0]); i++) { 1141 u16 coeff_a = (*csc_coeff)[0][i]; 1142 u16 coeff_b = (*csc_coeff)[1][i]; 1143 u16 coeff_c = (*csc_coeff)[2][i]; 1144 1145 hdmi_writeb(hdmi, coeff_a & 0xff, HDMI_CSC_COEF_A1_LSB + i * 2); 1146 hdmi_writeb(hdmi, coeff_a >> 8, HDMI_CSC_COEF_A1_MSB + i * 2); 1147 hdmi_writeb(hdmi, coeff_b & 0xff, HDMI_CSC_COEF_B1_LSB + i * 2); 1148 hdmi_writeb(hdmi, coeff_b >> 8, HDMI_CSC_COEF_B1_MSB + i * 2); 1149 hdmi_writeb(hdmi, coeff_c & 0xff, HDMI_CSC_COEF_C1_LSB + i * 2); 1150 hdmi_writeb(hdmi, coeff_c >> 8, HDMI_CSC_COEF_C1_MSB + i * 2); 1151 } 1152 1153 hdmi_modb(hdmi, csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK, 1154 HDMI_CSC_SCALE); 1155} 1156 1157static void hdmi_video_csc(struct dw_hdmi *hdmi) 1158{ 1159 int color_depth = 0; 1160 int interpolation = HDMI_CSC_CFG_INTMODE_DISABLE; 1161 int decimation = 0; 1162 1163 /* YCC422 interpolation to 444 mode */ 1164 if (is_color_space_interpolation(hdmi)) 1165 interpolation = HDMI_CSC_CFG_INTMODE_CHROMA_INT_FORMULA1; 1166 else if (is_color_space_decimation(hdmi)) 1167 decimation = HDMI_CSC_CFG_DECMODE_CHROMA_INT_FORMULA3; 1168 1169 switch (hdmi_bus_fmt_color_depth(hdmi->hdmi_data.enc_out_bus_format)) { 1170 case 8: 1171 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP; 1172 break; 1173 case 10: 1174 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_30BPP; 1175 break; 1176 case 12: 1177 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_36BPP; 1178 break; 1179 case 16: 1180 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_48BPP; 1181 break; 1182 1183 default: 1184 return; 1185 } 1186 1187 /* Configure the CSC registers */ 1188 hdmi_writeb(hdmi, interpolation | decimation, HDMI_CSC_CFG); 1189 hdmi_modb(hdmi, color_depth, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK, 1190 HDMI_CSC_SCALE); 1191 1192 dw_hdmi_update_csc_coeffs(hdmi); 1193} 1194 1195/* 1196 * HDMI video packetizer is used to packetize the data. 1197 * for example, if input is YCC422 mode or repeater is used, 1198 * data should be repacked this module can be bypassed. 1199 */ 1200static void hdmi_video_packetize(struct dw_hdmi *hdmi) 1201{ 1202 unsigned int color_depth = 0; 1203 unsigned int remap_size = HDMI_VP_REMAP_YCC422_16bit; 1204 unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP; 1205 struct hdmi_data_info *hdmi_data = &hdmi->hdmi_data; 1206 u8 val, vp_conf; 1207 u8 clear_gcp_auto = 0; 1208 1209 1210 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format) || 1211 hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format) || 1212 hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) { 1213 switch (hdmi_bus_fmt_color_depth( 1214 hdmi->hdmi_data.enc_out_bus_format)) { 1215 case 8: 1216 color_depth = 4; 1217 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; 1218 clear_gcp_auto = 1; 1219 break; 1220 case 10: 1221 color_depth = 5; 1222 break; 1223 case 12: 1224 color_depth = 6; 1225 break; 1226 case 16: 1227 color_depth = 7; 1228 break; 1229 default: 1230 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS; 1231 } 1232 } else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) { 1233 switch (hdmi_bus_fmt_color_depth( 1234 hdmi->hdmi_data.enc_out_bus_format)) { 1235 case 0: 1236 case 8: 1237 remap_size = HDMI_VP_REMAP_YCC422_16bit; 1238 clear_gcp_auto = 1; 1239 break; 1240 case 10: 1241 remap_size = HDMI_VP_REMAP_YCC422_20bit; 1242 break; 1243 case 12: 1244 remap_size = HDMI_VP_REMAP_YCC422_24bit; 1245 break; 1246 1247 default: 1248 return; 1249 } 1250 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422; 1251 } else { 1252 return; 1253 } 1254 1255 /* set the packetizer registers */ 1256 val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) & 1257 HDMI_VP_PR_CD_COLOR_DEPTH_MASK) | 1258 ((hdmi_data->pix_repet_factor << 1259 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) & 1260 HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK); 1261 hdmi_writeb(hdmi, val, HDMI_VP_PR_CD); 1262 1263 /* HDMI1.4b specification section 6.5.3: 1264 * Source shall only send GCPs with non-zero CD to sinks 1265 * that indicate support for Deep Color. 1266 * GCP only transmit CD and do not handle AVMUTE, PP norDefault_Phase (yet). 1267 * Disable Auto GCP when 24-bit color for sinks that not support Deep Color. 1268 */ 1269 val = hdmi_readb(hdmi, HDMI_FC_DATAUTO3); 1270 if (clear_gcp_auto == 1) 1271 val &= ~HDMI_FC_DATAUTO3_GCP_AUTO; 1272 else 1273 val |= HDMI_FC_DATAUTO3_GCP_AUTO; 1274 hdmi_writeb(hdmi, val, HDMI_FC_DATAUTO3); 1275 1276 hdmi_modb(hdmi, HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE, 1277 HDMI_VP_STUFF_PR_STUFFING_MASK, HDMI_VP_STUFF); 1278 1279 /* Data from pixel repeater block */ 1280 if (hdmi_data->pix_repet_factor > 1) { 1281 vp_conf = HDMI_VP_CONF_PR_EN_ENABLE | 1282 HDMI_VP_CONF_BYPASS_SELECT_PIX_REPEATER; 1283 } else { /* data from packetizer block */ 1284 vp_conf = HDMI_VP_CONF_PR_EN_DISABLE | 1285 HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER; 1286 } 1287 1288 hdmi_modb(hdmi, vp_conf, 1289 HDMI_VP_CONF_PR_EN_MASK | 1290 HDMI_VP_CONF_BYPASS_SELECT_MASK, HDMI_VP_CONF); 1291 1292 hdmi_modb(hdmi, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET, 1293 HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, HDMI_VP_STUFF); 1294 1295 hdmi_writeb(hdmi, remap_size, HDMI_VP_REMAP); 1296 1297 if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) { 1298 vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE | 1299 HDMI_VP_CONF_PP_EN_ENABLE | 1300 HDMI_VP_CONF_YCC422_EN_DISABLE; 1301 } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) { 1302 vp_conf = HDMI_VP_CONF_BYPASS_EN_DISABLE | 1303 HDMI_VP_CONF_PP_EN_DISABLE | 1304 HDMI_VP_CONF_YCC422_EN_ENABLE; 1305 } else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) { 1306 vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE | 1307 HDMI_VP_CONF_PP_EN_DISABLE | 1308 HDMI_VP_CONF_YCC422_EN_DISABLE; 1309 } else { 1310 return; 1311 } 1312 1313 hdmi_modb(hdmi, vp_conf, 1314 HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK | 1315 HDMI_VP_CONF_YCC422_EN_MASK, HDMI_VP_CONF); 1316 1317 hdmi_modb(hdmi, HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE | 1318 HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE, 1319 HDMI_VP_STUFF_PP_STUFFING_MASK | 1320 HDMI_VP_STUFF_YCC422_STUFFING_MASK, HDMI_VP_STUFF); 1321 1322 hdmi_modb(hdmi, output_select, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK, 1323 HDMI_VP_CONF); 1324} 1325 1326/* ----------------------------------------------------------------------------- 1327 * Synopsys PHY Handling 1328 */ 1329 1330static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi, 1331 unsigned char bit) 1332{ 1333 hdmi_modb(hdmi, bit << HDMI_PHY_TST0_TSTCLR_OFFSET, 1334 HDMI_PHY_TST0_TSTCLR_MASK, HDMI_PHY_TST0); 1335} 1336 1337static bool hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, int msec) 1338{ 1339 u32 val; 1340 1341 while ((val = hdmi_readb(hdmi, HDMI_IH_I2CMPHY_STAT0) & 0x3) == 0) { 1342 if (msec-- == 0) 1343 return false; 1344 udelay(1000); 1345 } 1346 hdmi_writeb(hdmi, val, HDMI_IH_I2CMPHY_STAT0); 1347 1348 return true; 1349} 1350 1351void dw_hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data, 1352 unsigned char addr) 1353{ 1354 hdmi_writeb(hdmi, 0xFF, HDMI_IH_I2CMPHY_STAT0); 1355 hdmi_writeb(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR); 1356 hdmi_writeb(hdmi, (unsigned char)(data >> 8), 1357 HDMI_PHY_I2CM_DATAO_1_ADDR); 1358 hdmi_writeb(hdmi, (unsigned char)(data >> 0), 1359 HDMI_PHY_I2CM_DATAO_0_ADDR); 1360 hdmi_writeb(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE, 1361 HDMI_PHY_I2CM_OPERATION_ADDR); 1362 hdmi_phy_wait_i2c_done(hdmi, 1000); 1363} 1364EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_write); 1365 1366/* Filter out invalid setups to avoid configuring SCDC and scrambling */ 1367static bool dw_hdmi_support_scdc(struct dw_hdmi *hdmi, 1368 const struct drm_display_info *display) 1369{ 1370 /* Completely disable SCDC support for older controllers */ 1371 if (hdmi->version < 0x200a) 1372 return false; 1373 1374 /* Disable if no DDC bus */ 1375 if (!hdmi->ddc) 1376 return false; 1377 1378 /* Disable if SCDC is not supported, or if an HF-VSDB block is absent */ 1379 if (!display->hdmi.scdc.supported || 1380 !display->hdmi.scdc.scrambling.supported) 1381 return false; 1382 1383 /* 1384 * Disable if display only support low TMDS rates and scrambling 1385 * for low rates is not supported either 1386 */ 1387 if (!display->hdmi.scdc.scrambling.low_rates && 1388 display->max_tmds_clock <= 340000) 1389 return false; 1390 1391 return true; 1392} 1393 1394/* 1395 * HDMI2.0 Specifies the following procedure for High TMDS Bit Rates: 1396 * - The Source shall suspend transmission of the TMDS clock and data 1397 * - The Source shall write to the TMDS_Bit_Clock_Ratio bit to change it 1398 * from a 0 to a 1 or from a 1 to a 0 1399 * - The Source shall allow a minimum of 1 ms and a maximum of 100 ms from 1400 * the time the TMDS_Bit_Clock_Ratio bit is written until resuming 1401 * transmission of TMDS clock and data 1402 * 1403 * To respect the 100ms maximum delay, the dw_hdmi_set_high_tmds_clock_ratio() 1404 * helper should called right before enabling the TMDS Clock and Data in 1405 * the PHY configuration callback. 1406 */ 1407void dw_hdmi_set_high_tmds_clock_ratio(struct dw_hdmi *hdmi, 1408 const struct drm_display_info *display) 1409{ 1410 unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock; 1411 1412 /* Control for TMDS Bit Period/TMDS Clock-Period Ratio */ 1413 if (dw_hdmi_support_scdc(hdmi, display)) { 1414 if (mtmdsclock > HDMI14_MAX_TMDSCLK) 1415 drm_scdc_set_high_tmds_clock_ratio(hdmi->curr_conn, 1); 1416 else 1417 drm_scdc_set_high_tmds_clock_ratio(hdmi->curr_conn, 0); 1418 } 1419} 1420EXPORT_SYMBOL_GPL(dw_hdmi_set_high_tmds_clock_ratio); 1421 1422static void dw_hdmi_phy_enable_powerdown(struct dw_hdmi *hdmi, bool enable) 1423{ 1424 hdmi_mask_writeb(hdmi, !enable, HDMI_PHY_CONF0, 1425 HDMI_PHY_CONF0_PDZ_OFFSET, 1426 HDMI_PHY_CONF0_PDZ_MASK); 1427} 1428 1429static void dw_hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, u8 enable) 1430{ 1431 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, 1432 HDMI_PHY_CONF0_ENTMDS_OFFSET, 1433 HDMI_PHY_CONF0_ENTMDS_MASK); 1434} 1435 1436static void dw_hdmi_phy_enable_svsret(struct dw_hdmi *hdmi, u8 enable) 1437{ 1438 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, 1439 HDMI_PHY_CONF0_SVSRET_OFFSET, 1440 HDMI_PHY_CONF0_SVSRET_MASK); 1441} 1442 1443void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable) 1444{ 1445 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, 1446 HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET, 1447 HDMI_PHY_CONF0_GEN2_PDDQ_MASK); 1448} 1449EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_pddq); 1450 1451void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable) 1452{ 1453 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, 1454 HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET, 1455 HDMI_PHY_CONF0_GEN2_TXPWRON_MASK); 1456} 1457EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_txpwron); 1458 1459static void dw_hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, u8 enable) 1460{ 1461 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, 1462 HDMI_PHY_CONF0_SELDATAENPOL_OFFSET, 1463 HDMI_PHY_CONF0_SELDATAENPOL_MASK); 1464} 1465 1466static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, u8 enable) 1467{ 1468 hdmi_mask_writeb(hdmi, enable, HDMI_PHY_CONF0, 1469 HDMI_PHY_CONF0_SELDIPIF_OFFSET, 1470 HDMI_PHY_CONF0_SELDIPIF_MASK); 1471} 1472 1473void dw_hdmi_phy_gen1_reset(struct dw_hdmi *hdmi) 1474{ 1475 /* PHY reset. The reset signal is active low on Gen1 PHYs. */ 1476 hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ); 1477 hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ); 1478} 1479EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen1_reset); 1480 1481void dw_hdmi_phy_gen2_reset(struct dw_hdmi *hdmi) 1482{ 1483 /* PHY reset. The reset signal is active high on Gen2 PHYs. */ 1484 hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ); 1485 hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ); 1486} 1487EXPORT_SYMBOL_GPL(dw_hdmi_phy_gen2_reset); 1488 1489void dw_hdmi_phy_i2c_set_addr(struct dw_hdmi *hdmi, u8 address) 1490{ 1491 hdmi_phy_test_clear(hdmi, 1); 1492 hdmi_writeb(hdmi, address, HDMI_PHY_I2CM_SLAVE_ADDR); 1493 hdmi_phy_test_clear(hdmi, 0); 1494} 1495EXPORT_SYMBOL_GPL(dw_hdmi_phy_i2c_set_addr); 1496 1497static void dw_hdmi_phy_power_off(struct dw_hdmi *hdmi) 1498{ 1499 const struct dw_hdmi_phy_data *phy = hdmi->phy.data; 1500 unsigned int i; 1501 u16 val; 1502 1503 if (phy->gen == 1) { 1504 dw_hdmi_phy_enable_tmds(hdmi, 0); 1505 dw_hdmi_phy_enable_powerdown(hdmi, true); 1506 return; 1507 } 1508 1509 dw_hdmi_phy_gen2_txpwron(hdmi, 0); 1510 1511 /* 1512 * Wait for TX_PHY_LOCK to be deasserted to indicate that the PHY went 1513 * to low power mode. 1514 */ 1515 for (i = 0; i < 5; ++i) { 1516 val = hdmi_readb(hdmi, HDMI_PHY_STAT0); 1517 if (!(val & HDMI_PHY_TX_PHY_LOCK)) 1518 break; 1519 1520 usleep_range(1000, 2000); 1521 } 1522 1523 if (val & HDMI_PHY_TX_PHY_LOCK) 1524 dev_warn(hdmi->dev, "PHY failed to power down\n"); 1525 else 1526 dev_dbg(hdmi->dev, "PHY powered down in %u iterations\n", i); 1527 1528 dw_hdmi_phy_gen2_pddq(hdmi, 1); 1529} 1530 1531static int dw_hdmi_phy_power_on(struct dw_hdmi *hdmi) 1532{ 1533 const struct dw_hdmi_phy_data *phy = hdmi->phy.data; 1534 unsigned int i; 1535 u8 val; 1536 1537 if (phy->gen == 1) { 1538 dw_hdmi_phy_enable_powerdown(hdmi, false); 1539 1540 /* Toggle TMDS enable. */ 1541 dw_hdmi_phy_enable_tmds(hdmi, 0); 1542 dw_hdmi_phy_enable_tmds(hdmi, 1); 1543 return 0; 1544 } 1545 1546 dw_hdmi_phy_gen2_txpwron(hdmi, 1); 1547 dw_hdmi_phy_gen2_pddq(hdmi, 0); 1548 1549 /* Wait for PHY PLL lock */ 1550 for (i = 0; i < 5; ++i) { 1551 val = hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK; 1552 if (val) 1553 break; 1554 1555 usleep_range(1000, 2000); 1556 } 1557 1558 if (!val) { 1559 dev_err(hdmi->dev, "PHY PLL failed to lock\n"); 1560 return -ETIMEDOUT; 1561 } 1562 1563 dev_dbg(hdmi->dev, "PHY PLL locked %u iterations\n", i); 1564 return 0; 1565} 1566 1567/* 1568 * PHY configuration function for the DWC HDMI 3D TX PHY. Based on the available 1569 * information the DWC MHL PHY has the same register layout and is thus also 1570 * supported by this function. 1571 */ 1572static int hdmi_phy_configure_dwc_hdmi_3d_tx(struct dw_hdmi *hdmi, 1573 const struct dw_hdmi_plat_data *pdata, 1574 unsigned long mpixelclock) 1575{ 1576 const struct dw_hdmi_mpll_config *mpll_config = pdata->mpll_cfg; 1577 const struct dw_hdmi_curr_ctrl *curr_ctrl = pdata->cur_ctr; 1578 const struct dw_hdmi_phy_config *phy_config = pdata->phy_config; 1579 1580 /* TOFIX Will need 420 specific PHY configuration tables */ 1581 1582 /* PLL/MPLL Cfg - always match on final entry */ 1583 for (; mpll_config->mpixelclock != ~0UL; mpll_config++) 1584 if (mpixelclock <= mpll_config->mpixelclock) 1585 break; 1586 1587 for (; curr_ctrl->mpixelclock != ~0UL; curr_ctrl++) 1588 if (mpixelclock <= curr_ctrl->mpixelclock) 1589 break; 1590 1591 for (; phy_config->mpixelclock != ~0UL; phy_config++) 1592 if (mpixelclock <= phy_config->mpixelclock) 1593 break; 1594 1595 if (mpll_config->mpixelclock == ~0UL || 1596 curr_ctrl->mpixelclock == ~0UL || 1597 phy_config->mpixelclock == ~0UL) 1598 return -EINVAL; 1599 1600 dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].cpce, 1601 HDMI_3D_TX_PHY_CPCE_CTRL); 1602 dw_hdmi_phy_i2c_write(hdmi, mpll_config->res[0].gmp, 1603 HDMI_3D_TX_PHY_GMPCTRL); 1604 dw_hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[0], 1605 HDMI_3D_TX_PHY_CURRCTRL); 1606 1607 dw_hdmi_phy_i2c_write(hdmi, 0, HDMI_3D_TX_PHY_PLLPHBYCTRL); 1608 dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_MSM_CTRL_CKO_SEL_FB_CLK, 1609 HDMI_3D_TX_PHY_MSM_CTRL); 1610 1611 dw_hdmi_phy_i2c_write(hdmi, phy_config->term, HDMI_3D_TX_PHY_TXTERM); 1612 dw_hdmi_phy_i2c_write(hdmi, phy_config->sym_ctr, 1613 HDMI_3D_TX_PHY_CKSYMTXCTRL); 1614 dw_hdmi_phy_i2c_write(hdmi, phy_config->vlev_ctr, 1615 HDMI_3D_TX_PHY_VLEVCTRL); 1616 1617 /* Override and disable clock termination. */ 1618 dw_hdmi_phy_i2c_write(hdmi, HDMI_3D_TX_PHY_CKCALCTRL_OVERRIDE, 1619 HDMI_3D_TX_PHY_CKCALCTRL); 1620 1621 return 0; 1622} 1623 1624static int hdmi_phy_configure(struct dw_hdmi *hdmi, 1625 const struct drm_display_info *display) 1626{ 1627 const struct dw_hdmi_phy_data *phy = hdmi->phy.data; 1628 const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; 1629 unsigned long mpixelclock = hdmi->hdmi_data.video_mode.mpixelclock; 1630 unsigned long mtmdsclock = hdmi->hdmi_data.video_mode.mtmdsclock; 1631 int ret; 1632 1633 dw_hdmi_phy_power_off(hdmi); 1634 1635 dw_hdmi_set_high_tmds_clock_ratio(hdmi, display); 1636 1637 /* Leave low power consumption mode by asserting SVSRET. */ 1638 if (phy->has_svsret) 1639 dw_hdmi_phy_enable_svsret(hdmi, 1); 1640 1641 dw_hdmi_phy_gen2_reset(hdmi); 1642 1643 hdmi_writeb(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST); 1644 1645 dw_hdmi_phy_i2c_set_addr(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2); 1646 1647 /* Write to the PHY as configured by the platform */ 1648 if (pdata->configure_phy) 1649 ret = pdata->configure_phy(hdmi, pdata->priv_data, mpixelclock); 1650 else 1651 ret = phy->configure(hdmi, pdata, mpixelclock); 1652 if (ret) { 1653 dev_err(hdmi->dev, "PHY configuration failed (clock %lu)\n", 1654 mpixelclock); 1655 return ret; 1656 } 1657 1658 /* Wait for resuming transmission of TMDS clock and data */ 1659 if (mtmdsclock > HDMI14_MAX_TMDSCLK) 1660 msleep(100); 1661 1662 return dw_hdmi_phy_power_on(hdmi); 1663} 1664 1665static int dw_hdmi_phy_init(struct dw_hdmi *hdmi, void *data, 1666 const struct drm_display_info *display, 1667 const struct drm_display_mode *mode) 1668{ 1669 int i, ret; 1670 1671 /* HDMI Phy spec says to do the phy initialization sequence twice */ 1672 for (i = 0; i < 2; i++) { 1673 dw_hdmi_phy_sel_data_en_pol(hdmi, 1); 1674 dw_hdmi_phy_sel_interface_control(hdmi, 0); 1675 1676 ret = hdmi_phy_configure(hdmi, display); 1677 if (ret) 1678 return ret; 1679 } 1680 1681 return 0; 1682} 1683 1684static void dw_hdmi_phy_disable(struct dw_hdmi *hdmi, void *data) 1685{ 1686 dw_hdmi_phy_power_off(hdmi); 1687} 1688 1689enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi, 1690 void *data) 1691{ 1692 return hdmi_readb(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD ? 1693 connector_status_connected : connector_status_disconnected; 1694} 1695EXPORT_SYMBOL_GPL(dw_hdmi_phy_read_hpd); 1696 1697void dw_hdmi_phy_update_hpd(struct dw_hdmi *hdmi, void *data, 1698 bool force, bool disabled, bool rxsense) 1699{ 1700 u8 old_mask = hdmi->phy_mask; 1701 1702 if (force || disabled || !rxsense) 1703 hdmi->phy_mask |= HDMI_PHY_RX_SENSE; 1704 else 1705 hdmi->phy_mask &= ~HDMI_PHY_RX_SENSE; 1706 1707 if (old_mask != hdmi->phy_mask) 1708 hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); 1709} 1710EXPORT_SYMBOL_GPL(dw_hdmi_phy_update_hpd); 1711 1712void dw_hdmi_phy_setup_hpd(struct dw_hdmi *hdmi, void *data) 1713{ 1714 /* 1715 * Configure the PHY RX SENSE and HPD interrupts polarities and clear 1716 * any pending interrupt. 1717 */ 1718 hdmi_writeb(hdmi, HDMI_PHY_HPD | HDMI_PHY_RX_SENSE, HDMI_PHY_POL0); 1719 hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, 1720 HDMI_IH_PHY_STAT0); 1721 1722 /* Enable cable hot plug irq. */ 1723 hdmi_writeb(hdmi, hdmi->phy_mask, HDMI_PHY_MASK0); 1724 1725 /* Clear and unmute interrupts. */ 1726 hdmi_writeb(hdmi, HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE, 1727 HDMI_IH_PHY_STAT0); 1728 hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE), 1729 HDMI_IH_MUTE_PHY_STAT0); 1730} 1731EXPORT_SYMBOL_GPL(dw_hdmi_phy_setup_hpd); 1732 1733static const struct dw_hdmi_phy_ops dw_hdmi_synopsys_phy_ops = { 1734 .init = dw_hdmi_phy_init, 1735 .disable = dw_hdmi_phy_disable, 1736 .read_hpd = dw_hdmi_phy_read_hpd, 1737 .update_hpd = dw_hdmi_phy_update_hpd, 1738 .setup_hpd = dw_hdmi_phy_setup_hpd, 1739}; 1740 1741/* ----------------------------------------------------------------------------- 1742 * HDMI TX Setup 1743 */ 1744 1745static void hdmi_tx_hdcp_config(struct dw_hdmi *hdmi) 1746{ 1747 u8 de; 1748 1749 if (hdmi->hdmi_data.video_mode.mdataenablepolarity) 1750 de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_HIGH; 1751 else 1752 de = HDMI_A_VIDPOLCFG_DATAENPOL_ACTIVE_LOW; 1753 1754 /* disable rx detect */ 1755 hdmi_modb(hdmi, HDMI_A_HDCPCFG0_RXDETECT_DISABLE, 1756 HDMI_A_HDCPCFG0_RXDETECT_MASK, HDMI_A_HDCPCFG0); 1757 1758 hdmi_modb(hdmi, de, HDMI_A_VIDPOLCFG_DATAENPOL_MASK, HDMI_A_VIDPOLCFG); 1759 1760 hdmi_modb(hdmi, HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_DISABLE, 1761 HDMI_A_HDCPCFG1_ENCRYPTIONDISABLE_MASK, HDMI_A_HDCPCFG1); 1762} 1763 1764static void hdmi_config_AVI(struct dw_hdmi *hdmi, 1765 const struct drm_connector *connector, 1766 const struct drm_display_mode *mode) 1767{ 1768 struct hdmi_avi_infoframe frame; 1769 u8 val; 1770 1771 /* Initialise info frame from DRM mode */ 1772 drm_hdmi_avi_infoframe_from_display_mode(&frame, connector, mode); 1773 1774 if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) { 1775 drm_hdmi_avi_infoframe_quant_range(&frame, connector, mode, 1776 hdmi->hdmi_data.rgb_limited_range ? 1777 HDMI_QUANTIZATION_RANGE_LIMITED : 1778 HDMI_QUANTIZATION_RANGE_FULL); 1779 } else { 1780 frame.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT; 1781 frame.ycc_quantization_range = 1782 HDMI_YCC_QUANTIZATION_RANGE_LIMITED; 1783 } 1784 1785 if (hdmi_bus_fmt_is_yuv444(hdmi->hdmi_data.enc_out_bus_format)) 1786 frame.colorspace = HDMI_COLORSPACE_YUV444; 1787 else if (hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) 1788 frame.colorspace = HDMI_COLORSPACE_YUV422; 1789 else if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) 1790 frame.colorspace = HDMI_COLORSPACE_YUV420; 1791 else 1792 frame.colorspace = HDMI_COLORSPACE_RGB; 1793 1794 /* Set up colorimetry */ 1795 if (!hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) { 1796 switch (hdmi->hdmi_data.enc_out_encoding) { 1797 case V4L2_YCBCR_ENC_601: 1798 if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV601) 1799 frame.colorimetry = HDMI_COLORIMETRY_EXTENDED; 1800 else 1801 frame.colorimetry = HDMI_COLORIMETRY_ITU_601; 1802 frame.extended_colorimetry = 1803 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; 1804 break; 1805 case V4L2_YCBCR_ENC_709: 1806 if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV709) 1807 frame.colorimetry = HDMI_COLORIMETRY_EXTENDED; 1808 else 1809 frame.colorimetry = HDMI_COLORIMETRY_ITU_709; 1810 frame.extended_colorimetry = 1811 HDMI_EXTENDED_COLORIMETRY_XV_YCC_709; 1812 break; 1813 default: /* Carries no data */ 1814 frame.colorimetry = HDMI_COLORIMETRY_ITU_601; 1815 frame.extended_colorimetry = 1816 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; 1817 break; 1818 } 1819 } else { 1820 frame.colorimetry = HDMI_COLORIMETRY_NONE; 1821 frame.extended_colorimetry = 1822 HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; 1823 } 1824 1825 /* 1826 * The Designware IP uses a different byte format from standard 1827 * AVI info frames, though generally the bits are in the correct 1828 * bytes. 1829 */ 1830 1831 /* 1832 * AVI data byte 1 differences: Colorspace in bits 0,1 rather than 5,6, 1833 * scan info in bits 4,5 rather than 0,1 and active aspect present in 1834 * bit 6 rather than 4. 1835 */ 1836 val = (frame.scan_mode & 3) << 4 | (frame.colorspace & 3); 1837 if (frame.active_aspect & 15) 1838 val |= HDMI_FC_AVICONF0_ACTIVE_FMT_INFO_PRESENT; 1839 if (frame.top_bar || frame.bottom_bar) 1840 val |= HDMI_FC_AVICONF0_BAR_DATA_HORIZ_BAR; 1841 if (frame.left_bar || frame.right_bar) 1842 val |= HDMI_FC_AVICONF0_BAR_DATA_VERT_BAR; 1843 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF0); 1844 1845 /* AVI data byte 2 differences: none */ 1846 val = ((frame.colorimetry & 0x3) << 6) | 1847 ((frame.picture_aspect & 0x3) << 4) | 1848 (frame.active_aspect & 0xf); 1849 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF1); 1850 1851 /* AVI data byte 3 differences: none */ 1852 val = ((frame.extended_colorimetry & 0x7) << 4) | 1853 ((frame.quantization_range & 0x3) << 2) | 1854 (frame.nups & 0x3); 1855 if (frame.itc) 1856 val |= HDMI_FC_AVICONF2_IT_CONTENT_VALID; 1857 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF2); 1858 1859 /* AVI data byte 4 differences: none */ 1860 val = frame.video_code & 0x7f; 1861 hdmi_writeb(hdmi, val, HDMI_FC_AVIVID); 1862 1863 /* AVI Data Byte 5- set up input and output pixel repetition */ 1864 val = (((hdmi->hdmi_data.video_mode.mpixelrepetitioninput + 1) << 1865 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_OFFSET) & 1866 HDMI_FC_PRCONF_INCOMING_PR_FACTOR_MASK) | 1867 ((hdmi->hdmi_data.video_mode.mpixelrepetitionoutput << 1868 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_OFFSET) & 1869 HDMI_FC_PRCONF_OUTPUT_PR_FACTOR_MASK); 1870 hdmi_writeb(hdmi, val, HDMI_FC_PRCONF); 1871 1872 /* 1873 * AVI data byte 5 differences: content type in 0,1 rather than 4,5, 1874 * ycc range in bits 2,3 rather than 6,7 1875 */ 1876 val = ((frame.ycc_quantization_range & 0x3) << 2) | 1877 (frame.content_type & 0x3); 1878 hdmi_writeb(hdmi, val, HDMI_FC_AVICONF3); 1879 1880 /* AVI Data Bytes 6-13 */ 1881 hdmi_writeb(hdmi, frame.top_bar & 0xff, HDMI_FC_AVIETB0); 1882 hdmi_writeb(hdmi, (frame.top_bar >> 8) & 0xff, HDMI_FC_AVIETB1); 1883 hdmi_writeb(hdmi, frame.bottom_bar & 0xff, HDMI_FC_AVISBB0); 1884 hdmi_writeb(hdmi, (frame.bottom_bar >> 8) & 0xff, HDMI_FC_AVISBB1); 1885 hdmi_writeb(hdmi, frame.left_bar & 0xff, HDMI_FC_AVIELB0); 1886 hdmi_writeb(hdmi, (frame.left_bar >> 8) & 0xff, HDMI_FC_AVIELB1); 1887 hdmi_writeb(hdmi, frame.right_bar & 0xff, HDMI_FC_AVISRB0); 1888 hdmi_writeb(hdmi, (frame.right_bar >> 8) & 0xff, HDMI_FC_AVISRB1); 1889} 1890 1891static void hdmi_config_vendor_specific_infoframe(struct dw_hdmi *hdmi, 1892 const struct drm_connector *connector, 1893 const struct drm_display_mode *mode) 1894{ 1895 struct hdmi_vendor_infoframe frame; 1896 u8 buffer[10]; 1897 ssize_t err; 1898 1899 err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, connector, 1900 mode); 1901 if (err < 0) 1902 /* 1903 * Going into that statement does not means vendor infoframe 1904 * fails. It just informed us that vendor infoframe is not 1905 * needed for the selected mode. Only 4k or stereoscopic 3D 1906 * mode requires vendor infoframe. So just simply return. 1907 */ 1908 return; 1909 1910 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer)); 1911 if (err < 0) { 1912 dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n", 1913 err); 1914 return; 1915 } 1916 hdmi_mask_writeb(hdmi, 0, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET, 1917 HDMI_FC_DATAUTO0_VSD_MASK); 1918 1919 /* Set the length of HDMI vendor specific InfoFrame payload */ 1920 hdmi_writeb(hdmi, buffer[2], HDMI_FC_VSDSIZE); 1921 1922 /* Set 24bit IEEE Registration Identifier */ 1923 hdmi_writeb(hdmi, buffer[4], HDMI_FC_VSDIEEEID0); 1924 hdmi_writeb(hdmi, buffer[5], HDMI_FC_VSDIEEEID1); 1925 hdmi_writeb(hdmi, buffer[6], HDMI_FC_VSDIEEEID2); 1926 1927 /* Set HDMI_Video_Format and HDMI_VIC/3D_Structure */ 1928 hdmi_writeb(hdmi, buffer[7], HDMI_FC_VSDPAYLOAD0); 1929 hdmi_writeb(hdmi, buffer[8], HDMI_FC_VSDPAYLOAD1); 1930 1931 if (frame.s3d_struct >= HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF) 1932 hdmi_writeb(hdmi, buffer[9], HDMI_FC_VSDPAYLOAD2); 1933 1934 /* Packet frame interpolation */ 1935 hdmi_writeb(hdmi, 1, HDMI_FC_DATAUTO1); 1936 1937 /* Auto packets per frame and line spacing */ 1938 hdmi_writeb(hdmi, 0x11, HDMI_FC_DATAUTO2); 1939 1940 /* Configures the Frame Composer On RDRB mode */ 1941 hdmi_mask_writeb(hdmi, 1, HDMI_FC_DATAUTO0, HDMI_FC_DATAUTO0_VSD_OFFSET, 1942 HDMI_FC_DATAUTO0_VSD_MASK); 1943} 1944 1945static void hdmi_config_drm_infoframe(struct dw_hdmi *hdmi, 1946 const struct drm_connector *connector) 1947{ 1948 const struct drm_connector_state *conn_state = connector->state; 1949 struct hdmi_drm_infoframe frame; 1950 u8 buffer[30]; 1951 ssize_t err; 1952 int i; 1953 1954 if (!hdmi->plat_data->use_drm_infoframe) 1955 return; 1956 1957 hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_DISABLE, 1958 HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN); 1959 1960 err = drm_hdmi_infoframe_set_hdr_metadata(&frame, conn_state); 1961 if (err < 0) 1962 return; 1963 1964 err = hdmi_drm_infoframe_pack(&frame, buffer, sizeof(buffer)); 1965 if (err < 0) { 1966 dev_err(hdmi->dev, "Failed to pack drm infoframe: %zd\n", err); 1967 return; 1968 } 1969 1970 hdmi_writeb(hdmi, frame.version, HDMI_FC_DRM_HB0); 1971 hdmi_writeb(hdmi, frame.length, HDMI_FC_DRM_HB1); 1972 1973 for (i = 0; i < frame.length; i++) 1974 hdmi_writeb(hdmi, buffer[4 + i], HDMI_FC_DRM_PB0 + i); 1975 1976 hdmi_writeb(hdmi, 1, HDMI_FC_DRM_UP); 1977 hdmi_modb(hdmi, HDMI_FC_PACKET_TX_EN_DRM_ENABLE, 1978 HDMI_FC_PACKET_TX_EN_DRM_MASK, HDMI_FC_PACKET_TX_EN); 1979} 1980 1981static void hdmi_av_composer(struct dw_hdmi *hdmi, 1982 const struct drm_display_info *display, 1983 const struct drm_display_mode *mode) 1984{ 1985 u8 inv_val, bytes; 1986 const struct drm_hdmi_info *hdmi_info = &display->hdmi; 1987 struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode; 1988 int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len; 1989 unsigned int vdisplay, hdisplay; 1990 1991 vmode->mpixelclock = mode->clock * 1000; 1992 1993 dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock); 1994 1995 vmode->mtmdsclock = vmode->mpixelclock; 1996 1997 if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) { 1998 switch (hdmi_bus_fmt_color_depth( 1999 hdmi->hdmi_data.enc_out_bus_format)) { 2000 case 16: 2001 vmode->mtmdsclock = vmode->mpixelclock * 2; 2002 break; 2003 case 12: 2004 vmode->mtmdsclock = vmode->mpixelclock * 3 / 2; 2005 break; 2006 case 10: 2007 vmode->mtmdsclock = vmode->mpixelclock * 5 / 4; 2008 break; 2009 } 2010 } 2011 2012 if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) 2013 vmode->mtmdsclock /= 2; 2014 2015 dev_dbg(hdmi->dev, "final tmdsclock = %d\n", vmode->mtmdsclock); 2016 2017 /* Set up HDMI_FC_INVIDCONF */ 2018 inv_val = (hdmi->hdmi_data.hdcp_enable || 2019 (dw_hdmi_support_scdc(hdmi, display) && 2020 (vmode->mtmdsclock > HDMI14_MAX_TMDSCLK || 2021 hdmi_info->scdc.scrambling.low_rates)) ? 2022 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_ACTIVE : 2023 HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE); 2024 2025 inv_val |= mode->flags & DRM_MODE_FLAG_PVSYNC ? 2026 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH : 2027 HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW; 2028 2029 inv_val |= mode->flags & DRM_MODE_FLAG_PHSYNC ? 2030 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH : 2031 HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW; 2032 2033 inv_val |= (vmode->mdataenablepolarity ? 2034 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH : 2035 HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW); 2036 2037 if (hdmi->vic == 39) 2038 inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH; 2039 else 2040 inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ? 2041 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH : 2042 HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW; 2043 2044 inv_val |= mode->flags & DRM_MODE_FLAG_INTERLACE ? 2045 HDMI_FC_INVIDCONF_IN_I_P_INTERLACED : 2046 HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE; 2047 2048 inv_val |= hdmi->sink_is_hdmi ? 2049 HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE : 2050 HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE; 2051 2052 hdmi_writeb(hdmi, inv_val, HDMI_FC_INVIDCONF); 2053 2054 hdisplay = mode->hdisplay; 2055 hblank = mode->htotal - mode->hdisplay; 2056 h_de_hs = mode->hsync_start - mode->hdisplay; 2057 hsync_len = mode->hsync_end - mode->hsync_start; 2058 2059 /* 2060 * When we're setting a YCbCr420 mode, we need 2061 * to adjust the horizontal timing to suit. 2062 */ 2063 if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format)) { 2064 hdisplay /= 2; 2065 hblank /= 2; 2066 h_de_hs /= 2; 2067 hsync_len /= 2; 2068 } 2069 2070 vdisplay = mode->vdisplay; 2071 vblank = mode->vtotal - mode->vdisplay; 2072 v_de_vs = mode->vsync_start - mode->vdisplay; 2073 vsync_len = mode->vsync_end - mode->vsync_start; 2074 2075 /* 2076 * When we're setting an interlaced mode, we need 2077 * to adjust the vertical timing to suit. 2078 */ 2079 if (mode->flags & DRM_MODE_FLAG_INTERLACE) { 2080 vdisplay /= 2; 2081 vblank /= 2; 2082 v_de_vs /= 2; 2083 vsync_len /= 2; 2084 } 2085 2086 /* Scrambling Control */ 2087 if (dw_hdmi_support_scdc(hdmi, display)) { 2088 if (vmode->mtmdsclock > HDMI14_MAX_TMDSCLK || 2089 hdmi_info->scdc.scrambling.low_rates) { 2090 /* 2091 * HDMI2.0 Specifies the following procedure: 2092 * After the Source Device has determined that 2093 * SCDC_Present is set (=1), the Source Device should 2094 * write the accurate Version of the Source Device 2095 * to the Source Version field in the SCDCS. 2096 * Source Devices compliant shall set the 2097 * Source Version = 1. 2098 */ 2099 drm_scdc_readb(hdmi->ddc, SCDC_SINK_VERSION, 2100 &bytes); 2101 drm_scdc_writeb(hdmi->ddc, SCDC_SOURCE_VERSION, 2102 min_t(u8, bytes, SCDC_MIN_SOURCE_VERSION)); 2103 2104 /* Enabled Scrambling in the Sink */ 2105 drm_scdc_set_scrambling(hdmi->curr_conn, 1); 2106 2107 /* 2108 * To activate the scrambler feature, you must ensure 2109 * that the quasi-static configuration bit 2110 * fc_invidconf.HDCP_keepout is set at configuration 2111 * time, before the required mc_swrstzreq.tmdsswrst_req 2112 * reset request is issued. 2113 */ 2114 hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, 2115 HDMI_MC_SWRSTZ); 2116 hdmi_writeb(hdmi, 1, HDMI_FC_SCRAMBLER_CTRL); 2117 } else { 2118 hdmi_writeb(hdmi, 0, HDMI_FC_SCRAMBLER_CTRL); 2119 hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, 2120 HDMI_MC_SWRSTZ); 2121 drm_scdc_set_scrambling(hdmi->curr_conn, 0); 2122 } 2123 } 2124 2125 /* Set up horizontal active pixel width */ 2126 hdmi_writeb(hdmi, hdisplay >> 8, HDMI_FC_INHACTV1); 2127 hdmi_writeb(hdmi, hdisplay, HDMI_FC_INHACTV0); 2128 2129 /* Set up vertical active lines */ 2130 hdmi_writeb(hdmi, vdisplay >> 8, HDMI_FC_INVACTV1); 2131 hdmi_writeb(hdmi, vdisplay, HDMI_FC_INVACTV0); 2132 2133 /* Set up horizontal blanking pixel region width */ 2134 hdmi_writeb(hdmi, hblank >> 8, HDMI_FC_INHBLANK1); 2135 hdmi_writeb(hdmi, hblank, HDMI_FC_INHBLANK0); 2136 2137 /* Set up vertical blanking pixel region width */ 2138 hdmi_writeb(hdmi, vblank, HDMI_FC_INVBLANK); 2139 2140 /* Set up HSYNC active edge delay width (in pixel clks) */ 2141 hdmi_writeb(hdmi, h_de_hs >> 8, HDMI_FC_HSYNCINDELAY1); 2142 hdmi_writeb(hdmi, h_de_hs, HDMI_FC_HSYNCINDELAY0); 2143 2144 /* Set up VSYNC active edge delay (in lines) */ 2145 hdmi_writeb(hdmi, v_de_vs, HDMI_FC_VSYNCINDELAY); 2146 2147 /* Set up HSYNC active pulse width (in pixel clks) */ 2148 hdmi_writeb(hdmi, hsync_len >> 8, HDMI_FC_HSYNCINWIDTH1); 2149 hdmi_writeb(hdmi, hsync_len, HDMI_FC_HSYNCINWIDTH0); 2150 2151 /* Set up VSYNC active edge delay (in lines) */ 2152 hdmi_writeb(hdmi, vsync_len, HDMI_FC_VSYNCINWIDTH); 2153} 2154 2155/* HDMI Initialization Step B.4 */ 2156static void dw_hdmi_enable_video_path(struct dw_hdmi *hdmi) 2157{ 2158 /* control period minimum duration */ 2159 hdmi_writeb(hdmi, 12, HDMI_FC_CTRLDUR); 2160 hdmi_writeb(hdmi, 32, HDMI_FC_EXCTRLDUR); 2161 hdmi_writeb(hdmi, 1, HDMI_FC_EXCTRLSPAC); 2162 2163 /* Set to fill TMDS data channels */ 2164 hdmi_writeb(hdmi, 0x0B, HDMI_FC_CH0PREAM); 2165 hdmi_writeb(hdmi, 0x16, HDMI_FC_CH1PREAM); 2166 hdmi_writeb(hdmi, 0x21, HDMI_FC_CH2PREAM); 2167 2168 /* Enable pixel clock and tmds data path */ 2169 hdmi->mc_clkdis |= HDMI_MC_CLKDIS_HDCPCLK_DISABLE | 2170 HDMI_MC_CLKDIS_CSCCLK_DISABLE | 2171 HDMI_MC_CLKDIS_AUDCLK_DISABLE | 2172 HDMI_MC_CLKDIS_PREPCLK_DISABLE | 2173 HDMI_MC_CLKDIS_TMDSCLK_DISABLE; 2174 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE; 2175 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); 2176 2177 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE; 2178 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); 2179 2180 /* Enable csc path */ 2181 if (is_csc_needed(hdmi)) { 2182 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE; 2183 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); 2184 2185 hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH, 2186 HDMI_MC_FLOWCTRL); 2187 } else { 2188 hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CSCCLK_DISABLE; 2189 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); 2190 2191 hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS, 2192 HDMI_MC_FLOWCTRL); 2193 } 2194} 2195 2196/* Workaround to clear the overflow condition */ 2197static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi) 2198{ 2199 unsigned int count; 2200 unsigned int i; 2201 u8 val; 2202 2203 /* 2204 * Under some circumstances the Frame Composer arithmetic unit can miss 2205 * an FC register write due to being busy processing the previous one. 2206 * The issue can be worked around by issuing a TMDS software reset and 2207 * then write one of the FC registers several times. 2208 * 2209 * The number of iterations matters and depends on the HDMI TX revision 2210 * (and possibly on the platform). 2211 * 4 iterations for i.MX6Q(v1.30a) and 1 iteration for others. 2212 * i.MX6DL (v1.31a), Allwinner SoCs (v1.32a), Rockchip RK3288 SoC (v2.00a), 2213 * Amlogic Meson GX SoCs (v2.01a), RK3328/RK3399 SoCs (v2.11a) 2214 * and i.MX8MPlus (v2.13a) have been identified as needing the workaround 2215 * with a single iteration. 2216 */ 2217 2218 switch (hdmi->version) { 2219 case 0x130a: 2220 count = 4; 2221 break; 2222 default: 2223 count = 1; 2224 break; 2225 } 2226 2227 /* TMDS software reset */ 2228 hdmi_writeb(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ); 2229 2230 val = hdmi_readb(hdmi, HDMI_FC_INVIDCONF); 2231 for (i = 0; i < count; i++) 2232 hdmi_writeb(hdmi, val, HDMI_FC_INVIDCONF); 2233} 2234 2235static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi) 2236{ 2237 hdmi_writeb(hdmi, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK, 2238 HDMI_IH_MUTE_FC_STAT2); 2239} 2240 2241static int dw_hdmi_setup(struct dw_hdmi *hdmi, 2242 const struct drm_connector *connector, 2243 const struct drm_display_mode *mode) 2244{ 2245 int ret; 2246 2247 hdmi_disable_overflow_interrupts(hdmi); 2248 2249 hdmi->vic = drm_match_cea_mode(mode); 2250 2251 if (!hdmi->vic) { 2252 dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n"); 2253 } else { 2254 dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic); 2255 } 2256 2257 if ((hdmi->vic == 6) || (hdmi->vic == 7) || 2258 (hdmi->vic == 21) || (hdmi->vic == 22) || 2259 (hdmi->vic == 2) || (hdmi->vic == 3) || 2260 (hdmi->vic == 17) || (hdmi->vic == 18)) 2261 hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_601; 2262 else 2263 hdmi->hdmi_data.enc_out_encoding = V4L2_YCBCR_ENC_709; 2264 2265 hdmi->hdmi_data.video_mode.mpixelrepetitionoutput = 0; 2266 hdmi->hdmi_data.video_mode.mpixelrepetitioninput = 0; 2267 2268 if (hdmi->hdmi_data.enc_in_bus_format == MEDIA_BUS_FMT_FIXED) 2269 hdmi->hdmi_data.enc_in_bus_format = MEDIA_BUS_FMT_RGB888_1X24; 2270 2271 /* TOFIX: Get input encoding from plat data or fallback to none */ 2272 if (hdmi->plat_data->input_bus_encoding) 2273 hdmi->hdmi_data.enc_in_encoding = 2274 hdmi->plat_data->input_bus_encoding; 2275 else 2276 hdmi->hdmi_data.enc_in_encoding = V4L2_YCBCR_ENC_DEFAULT; 2277 2278 if (hdmi->hdmi_data.enc_out_bus_format == MEDIA_BUS_FMT_FIXED) 2279 hdmi->hdmi_data.enc_out_bus_format = MEDIA_BUS_FMT_RGB888_1X24; 2280 2281 hdmi->hdmi_data.rgb_limited_range = hdmi->sink_is_hdmi && 2282 drm_default_rgb_quant_range(mode) == 2283 HDMI_QUANTIZATION_RANGE_LIMITED; 2284 2285 hdmi->hdmi_data.pix_repet_factor = 0; 2286 hdmi->hdmi_data.hdcp_enable = 0; 2287 hdmi->hdmi_data.video_mode.mdataenablepolarity = true; 2288 2289 /* HDMI Initialization Step B.1 */ 2290 hdmi_av_composer(hdmi, &connector->display_info, mode); 2291 2292 /* HDMI Initializateion Step B.2 */ 2293 ret = hdmi->phy.ops->init(hdmi, hdmi->phy.data, 2294 &connector->display_info, 2295 &hdmi->previous_mode); 2296 if (ret) 2297 return ret; 2298 hdmi->phy.enabled = true; 2299 2300 /* HDMI Initialization Step B.3 */ 2301 dw_hdmi_enable_video_path(hdmi); 2302 2303 if (hdmi->sink_has_audio) { 2304 dev_dbg(hdmi->dev, "sink has audio support\n"); 2305 2306 /* HDMI Initialization Step E - Configure audio */ 2307 hdmi_clk_regenerator_update_pixel_clock(hdmi); 2308 hdmi_enable_audio_clk(hdmi, hdmi->audio_enable); 2309 } 2310 2311 /* not for DVI mode */ 2312 if (hdmi->sink_is_hdmi) { 2313 dev_dbg(hdmi->dev, "%s HDMI mode\n", __func__); 2314 2315 /* HDMI Initialization Step F - Configure AVI InfoFrame */ 2316 hdmi_config_AVI(hdmi, connector, mode); 2317 hdmi_config_vendor_specific_infoframe(hdmi, connector, mode); 2318 hdmi_config_drm_infoframe(hdmi, connector); 2319 } else { 2320 dev_dbg(hdmi->dev, "%s DVI mode\n", __func__); 2321 } 2322 2323 hdmi_video_packetize(hdmi); 2324 hdmi_video_csc(hdmi); 2325 hdmi_video_sample(hdmi); 2326 hdmi_tx_hdcp_config(hdmi); 2327 2328 dw_hdmi_clear_overflow(hdmi); 2329 2330 return 0; 2331} 2332 2333static void initialize_hdmi_ih_mutes(struct dw_hdmi *hdmi) 2334{ 2335 u8 ih_mute; 2336 2337 /* 2338 * Boot up defaults are: 2339 * HDMI_IH_MUTE = 0x03 (disabled) 2340 * HDMI_IH_MUTE_* = 0x00 (enabled) 2341 * 2342 * Disable top level interrupt bits in HDMI block 2343 */ 2344 ih_mute = hdmi_readb(hdmi, HDMI_IH_MUTE) | 2345 HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | 2346 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT; 2347 2348 hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); 2349 2350 /* by default mask all interrupts */ 2351 hdmi_writeb(hdmi, 0xff, HDMI_VP_MASK); 2352 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK0); 2353 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK1); 2354 hdmi_writeb(hdmi, 0xff, HDMI_FC_MASK2); 2355 hdmi_writeb(hdmi, 0xff, HDMI_PHY_MASK0); 2356 hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_INT_ADDR); 2357 hdmi_writeb(hdmi, 0xff, HDMI_PHY_I2CM_CTLINT_ADDR); 2358 hdmi_writeb(hdmi, 0xff, HDMI_AUD_INT); 2359 hdmi_writeb(hdmi, 0xff, HDMI_AUD_SPDIFINT); 2360 hdmi_writeb(hdmi, 0xff, HDMI_AUD_HBR_MASK); 2361 hdmi_writeb(hdmi, 0xff, HDMI_GP_MASK); 2362 hdmi_writeb(hdmi, 0xff, HDMI_A_APIINTMSK); 2363 hdmi_writeb(hdmi, 0xff, HDMI_I2CM_INT); 2364 hdmi_writeb(hdmi, 0xff, HDMI_I2CM_CTLINT); 2365 2366 /* Disable interrupts in the IH_MUTE_* registers */ 2367 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT0); 2368 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT1); 2369 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_FC_STAT2); 2370 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AS_STAT0); 2371 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_PHY_STAT0); 2372 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CM_STAT0); 2373 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_CEC_STAT0); 2374 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_VP_STAT0); 2375 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_I2CMPHY_STAT0); 2376 hdmi_writeb(hdmi, 0xff, HDMI_IH_MUTE_AHBDMAAUD_STAT0); 2377 2378 /* Enable top level interrupt bits in HDMI block */ 2379 ih_mute &= ~(HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | 2380 HDMI_IH_MUTE_MUTE_ALL_INTERRUPT); 2381 hdmi_writeb(hdmi, ih_mute, HDMI_IH_MUTE); 2382} 2383 2384static void dw_hdmi_poweron(struct dw_hdmi *hdmi) 2385{ 2386 hdmi->bridge_is_on = true; 2387 2388 /* 2389 * The curr_conn field is guaranteed to be valid here, as this function 2390 * is only be called when !hdmi->disabled. 2391 */ 2392 dw_hdmi_setup(hdmi, hdmi->curr_conn, &hdmi->previous_mode); 2393} 2394 2395static void dw_hdmi_poweroff(struct dw_hdmi *hdmi) 2396{ 2397 if (hdmi->phy.enabled) { 2398 hdmi->phy.ops->disable(hdmi, hdmi->phy.data); 2399 hdmi->phy.enabled = false; 2400 } 2401 2402 hdmi->bridge_is_on = false; 2403} 2404 2405static void dw_hdmi_update_power(struct dw_hdmi *hdmi) 2406{ 2407 int force = hdmi->force; 2408 2409 if (hdmi->disabled) { 2410 force = DRM_FORCE_OFF; 2411 } else if (force == DRM_FORCE_UNSPECIFIED) { 2412 if (hdmi->rxsense) 2413 force = DRM_FORCE_ON; 2414 else 2415 force = DRM_FORCE_OFF; 2416 } 2417 2418 if (force == DRM_FORCE_OFF) { 2419 if (hdmi->bridge_is_on) 2420 dw_hdmi_poweroff(hdmi); 2421 } else { 2422 if (!hdmi->bridge_is_on) 2423 dw_hdmi_poweron(hdmi); 2424 } 2425} 2426 2427/* 2428 * Adjust the detection of RXSENSE according to whether we have a forced 2429 * connection mode enabled, or whether we have been disabled. There is 2430 * no point processing RXSENSE interrupts if we have a forced connection 2431 * state, or DRM has us disabled. 2432 * 2433 * We also disable rxsense interrupts when we think we're disconnected 2434 * to avoid floating TDMS signals giving false rxsense interrupts. 2435 * 2436 * Note: we still need to listen for HPD interrupts even when DRM has us 2437 * disabled so that we can detect a connect event. 2438 */ 2439static void dw_hdmi_update_phy_mask(struct dw_hdmi *hdmi) 2440{ 2441 if (hdmi->phy.ops->update_hpd) 2442 hdmi->phy.ops->update_hpd(hdmi, hdmi->phy.data, 2443 hdmi->force, hdmi->disabled, 2444 hdmi->rxsense); 2445} 2446 2447static enum drm_connector_status dw_hdmi_detect(struct dw_hdmi *hdmi) 2448{ 2449 enum drm_connector_status result; 2450 2451 result = hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data); 2452 hdmi->last_connector_result = result; 2453 2454 return result; 2455} 2456 2457static const struct drm_edid *dw_hdmi_edid_read(struct dw_hdmi *hdmi, 2458 struct drm_connector *connector) 2459{ 2460 const struct drm_edid *drm_edid; 2461 const struct edid *edid; 2462 2463 if (!hdmi->ddc) 2464 return NULL; 2465 2466 drm_edid = drm_edid_read_ddc(connector, hdmi->ddc); 2467 if (!drm_edid) { 2468 dev_dbg(hdmi->dev, "failed to get edid\n"); 2469 return NULL; 2470 } 2471 2472 /* 2473 * FIXME: This should use connector->display_info.is_hdmi and 2474 * connector->display_info.has_audio from a path that has read the EDID 2475 * and called drm_edid_connector_update(). 2476 */ 2477 edid = drm_edid_raw(drm_edid); 2478 2479 dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n", 2480 edid->width_cm, edid->height_cm); 2481 2482 hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid); 2483 hdmi->sink_has_audio = drm_detect_monitor_audio(edid); 2484 2485 return drm_edid; 2486} 2487 2488/* ----------------------------------------------------------------------------- 2489 * DRM Connector Operations 2490 */ 2491 2492static enum drm_connector_status 2493dw_hdmi_connector_detect(struct drm_connector *connector, bool force) 2494{ 2495 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, 2496 connector); 2497 return dw_hdmi_detect(hdmi); 2498} 2499 2500static int dw_hdmi_connector_get_modes(struct drm_connector *connector) 2501{ 2502 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, 2503 connector); 2504 const struct drm_edid *drm_edid; 2505 int ret; 2506 2507 drm_edid = dw_hdmi_edid_read(hdmi, connector); 2508 2509 drm_edid_connector_update(connector, drm_edid); 2510 cec_notifier_set_phys_addr(hdmi->cec_notifier, 2511 connector->display_info.source_physical_address); 2512 ret = drm_edid_connector_add_modes(connector); 2513 drm_edid_free(drm_edid); 2514 2515 return ret; 2516} 2517 2518static int dw_hdmi_connector_atomic_check(struct drm_connector *connector, 2519 struct drm_atomic_state *state) 2520{ 2521 struct drm_connector_state *old_state = 2522 drm_atomic_get_old_connector_state(state, connector); 2523 struct drm_connector_state *new_state = 2524 drm_atomic_get_new_connector_state(state, connector); 2525 struct drm_crtc *crtc = new_state->crtc; 2526 struct drm_crtc_state *crtc_state; 2527 2528 if (!crtc) 2529 return 0; 2530 2531 if (!drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) { 2532 crtc_state = drm_atomic_get_crtc_state(state, crtc); 2533 if (IS_ERR(crtc_state)) 2534 return PTR_ERR(crtc_state); 2535 2536 crtc_state->mode_changed = true; 2537 } 2538 2539 return 0; 2540} 2541 2542static void dw_hdmi_connector_force(struct drm_connector *connector) 2543{ 2544 struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi, 2545 connector); 2546 2547 mutex_lock(&hdmi->mutex); 2548 hdmi->force = connector->force; 2549 dw_hdmi_update_power(hdmi); 2550 dw_hdmi_update_phy_mask(hdmi); 2551 mutex_unlock(&hdmi->mutex); 2552} 2553 2554static const struct drm_connector_funcs dw_hdmi_connector_funcs = { 2555 .fill_modes = drm_helper_probe_single_connector_modes, 2556 .detect = dw_hdmi_connector_detect, 2557 .destroy = drm_connector_cleanup, 2558 .force = dw_hdmi_connector_force, 2559 .reset = drm_atomic_helper_connector_reset, 2560 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 2561 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 2562}; 2563 2564static const struct drm_connector_helper_funcs dw_hdmi_connector_helper_funcs = { 2565 .get_modes = dw_hdmi_connector_get_modes, 2566 .atomic_check = dw_hdmi_connector_atomic_check, 2567}; 2568 2569static int dw_hdmi_connector_create(struct dw_hdmi *hdmi) 2570{ 2571 struct drm_connector *connector = &hdmi->connector; 2572 struct cec_connector_info conn_info; 2573 struct cec_notifier *notifier; 2574 2575 if (hdmi->version >= 0x200a) 2576 connector->ycbcr_420_allowed = 2577 hdmi->plat_data->ycbcr_420_allowed; 2578 else 2579 connector->ycbcr_420_allowed = false; 2580 2581 connector->interlace_allowed = 1; 2582 connector->polled = DRM_CONNECTOR_POLL_HPD; 2583 2584 drm_connector_helper_add(connector, &dw_hdmi_connector_helper_funcs); 2585 2586 drm_connector_init_with_ddc(hdmi->bridge.dev, connector, 2587 &dw_hdmi_connector_funcs, 2588 DRM_MODE_CONNECTOR_HDMIA, 2589 hdmi->ddc); 2590 2591 /* 2592 * drm_connector_attach_max_bpc_property() requires the 2593 * connector to have a state. 2594 */ 2595 drm_atomic_helper_connector_reset(connector); 2596 2597 drm_connector_attach_max_bpc_property(connector, 8, 16); 2598 2599 if (hdmi->version >= 0x200a && hdmi->plat_data->use_drm_infoframe) 2600 drm_connector_attach_hdr_output_metadata_property(connector); 2601 2602 drm_connector_attach_encoder(connector, hdmi->bridge.encoder); 2603 2604 cec_fill_conn_info_from_drm(&conn_info, connector); 2605 2606 notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info); 2607 if (!notifier) 2608 return -ENOMEM; 2609 2610 mutex_lock(&hdmi->cec_notifier_mutex); 2611 hdmi->cec_notifier = notifier; 2612 mutex_unlock(&hdmi->cec_notifier_mutex); 2613 2614 return 0; 2615} 2616 2617/* ----------------------------------------------------------------------------- 2618 * DRM Bridge Operations 2619 */ 2620 2621/* 2622 * Possible output formats : 2623 * - MEDIA_BUS_FMT_UYYVYY16_0_5X48, 2624 * - MEDIA_BUS_FMT_UYYVYY12_0_5X36, 2625 * - MEDIA_BUS_FMT_UYYVYY10_0_5X30, 2626 * - MEDIA_BUS_FMT_UYYVYY8_0_5X24, 2627 * - MEDIA_BUS_FMT_YUV16_1X48, 2628 * - MEDIA_BUS_FMT_RGB161616_1X48, 2629 * - MEDIA_BUS_FMT_UYVY12_1X24, 2630 * - MEDIA_BUS_FMT_YUV12_1X36, 2631 * - MEDIA_BUS_FMT_RGB121212_1X36, 2632 * - MEDIA_BUS_FMT_UYVY10_1X20, 2633 * - MEDIA_BUS_FMT_YUV10_1X30, 2634 * - MEDIA_BUS_FMT_RGB101010_1X30, 2635 * - MEDIA_BUS_FMT_UYVY8_1X16, 2636 * - MEDIA_BUS_FMT_YUV8_1X24, 2637 * - MEDIA_BUS_FMT_RGB888_1X24, 2638 */ 2639 2640/* Can return a maximum of 11 possible output formats for a mode/connector */ 2641#define MAX_OUTPUT_SEL_FORMATS 11 2642 2643static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, 2644 struct drm_bridge_state *bridge_state, 2645 struct drm_crtc_state *crtc_state, 2646 struct drm_connector_state *conn_state, 2647 unsigned int *num_output_fmts) 2648{ 2649 struct drm_connector *conn = conn_state->connector; 2650 struct drm_display_info *info = &conn->display_info; 2651 struct drm_display_mode *mode = &crtc_state->mode; 2652 u8 max_bpc = conn_state->max_requested_bpc; 2653 bool is_hdmi2_sink = info->hdmi.scdc.supported || 2654 (info->color_formats & DRM_COLOR_FORMAT_YCBCR420); 2655 u32 *output_fmts; 2656 unsigned int i = 0; 2657 2658 *num_output_fmts = 0; 2659 2660 output_fmts = kcalloc(MAX_OUTPUT_SEL_FORMATS, sizeof(*output_fmts), 2661 GFP_KERNEL); 2662 if (!output_fmts) 2663 return NULL; 2664 2665 /* If dw-hdmi is the first or only bridge, avoid negociating with ourselves */ 2666 if (list_is_singular(&bridge->encoder->bridge_chain) || 2667 list_is_first(&bridge->chain_node, &bridge->encoder->bridge_chain)) { 2668 *num_output_fmts = 1; 2669 output_fmts[0] = MEDIA_BUS_FMT_FIXED; 2670 2671 return output_fmts; 2672 } 2673 2674 /* 2675 * If the current mode enforces 4:2:0, force the output but format 2676 * to 4:2:0 and do not add the YUV422/444/RGB formats 2677 */ 2678 if (conn->ycbcr_420_allowed && 2679 (drm_mode_is_420_only(info, mode) || 2680 (is_hdmi2_sink && drm_mode_is_420_also(info, mode)))) { 2681 2682 /* Order bus formats from 16bit to 8bit if supported */ 2683 if (max_bpc >= 16 && info->bpc == 16 && 2684 (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_48)) 2685 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY16_0_5X48; 2686 2687 if (max_bpc >= 12 && info->bpc >= 12 && 2688 (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_36)) 2689 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY12_0_5X36; 2690 2691 if (max_bpc >= 10 && info->bpc >= 10 && 2692 (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_30)) 2693 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY10_0_5X30; 2694 2695 /* Default 8bit fallback */ 2696 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24; 2697 2698 if (drm_mode_is_420_only(info, mode)) { 2699 *num_output_fmts = i; 2700 return output_fmts; 2701 } 2702 } 2703 2704 /* 2705 * Order bus formats from 16bit to 8bit and from YUV422 to RGB 2706 * if supported. In any case the default RGB888 format is added 2707 */ 2708 2709 /* Default 8bit RGB fallback */ 2710 output_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; 2711 2712 if (max_bpc >= 16 && info->bpc == 16) { 2713 if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) 2714 output_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; 2715 2716 output_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; 2717 } 2718 2719 if (max_bpc >= 12 && info->bpc >= 12) { 2720 if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422) 2721 output_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; 2722 2723 if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) 2724 output_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; 2725 2726 output_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; 2727 } 2728 2729 if (max_bpc >= 10 && info->bpc >= 10) { 2730 if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422) 2731 output_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; 2732 2733 if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) 2734 output_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; 2735 2736 output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; 2737 } 2738 2739 if (info->color_formats & DRM_COLOR_FORMAT_YCBCR422) 2740 output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; 2741 2742 if (info->color_formats & DRM_COLOR_FORMAT_YCBCR444) 2743 output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; 2744 2745 *num_output_fmts = i; 2746 2747 return output_fmts; 2748} 2749 2750/* 2751 * Possible input formats : 2752 * - MEDIA_BUS_FMT_RGB888_1X24 2753 * - MEDIA_BUS_FMT_YUV8_1X24 2754 * - MEDIA_BUS_FMT_UYVY8_1X16 2755 * - MEDIA_BUS_FMT_UYYVYY8_0_5X24 2756 * - MEDIA_BUS_FMT_RGB101010_1X30 2757 * - MEDIA_BUS_FMT_YUV10_1X30 2758 * - MEDIA_BUS_FMT_UYVY10_1X20 2759 * - MEDIA_BUS_FMT_UYYVYY10_0_5X30 2760 * - MEDIA_BUS_FMT_RGB121212_1X36 2761 * - MEDIA_BUS_FMT_YUV12_1X36 2762 * - MEDIA_BUS_FMT_UYVY12_1X24 2763 * - MEDIA_BUS_FMT_UYYVYY12_0_5X36 2764 * - MEDIA_BUS_FMT_RGB161616_1X48 2765 * - MEDIA_BUS_FMT_YUV16_1X48 2766 * - MEDIA_BUS_FMT_UYYVYY16_0_5X48 2767 */ 2768 2769/* Can return a maximum of 3 possible input formats for an output format */ 2770#define MAX_INPUT_SEL_FORMATS 3 2771 2772static u32 *dw_hdmi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, 2773 struct drm_bridge_state *bridge_state, 2774 struct drm_crtc_state *crtc_state, 2775 struct drm_connector_state *conn_state, 2776 u32 output_fmt, 2777 unsigned int *num_input_fmts) 2778{ 2779 u32 *input_fmts; 2780 unsigned int i = 0; 2781 2782 *num_input_fmts = 0; 2783 2784 input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts), 2785 GFP_KERNEL); 2786 if (!input_fmts) 2787 return NULL; 2788 2789 switch (output_fmt) { 2790 /* If MEDIA_BUS_FMT_FIXED is tested, return default bus format */ 2791 case MEDIA_BUS_FMT_FIXED: 2792 input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; 2793 break; 2794 /* 8bit */ 2795 case MEDIA_BUS_FMT_RGB888_1X24: 2796 input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; 2797 input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; 2798 input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; 2799 break; 2800 case MEDIA_BUS_FMT_YUV8_1X24: 2801 input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; 2802 input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; 2803 input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; 2804 break; 2805 case MEDIA_BUS_FMT_UYVY8_1X16: 2806 input_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; 2807 input_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; 2808 input_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; 2809 break; 2810 2811 /* 10bit */ 2812 case MEDIA_BUS_FMT_RGB101010_1X30: 2813 input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; 2814 input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; 2815 input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; 2816 break; 2817 case MEDIA_BUS_FMT_YUV10_1X30: 2818 input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; 2819 input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; 2820 input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; 2821 break; 2822 case MEDIA_BUS_FMT_UYVY10_1X20: 2823 input_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; 2824 input_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; 2825 input_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; 2826 break; 2827 2828 /* 12bit */ 2829 case MEDIA_BUS_FMT_RGB121212_1X36: 2830 input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; 2831 input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; 2832 input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; 2833 break; 2834 case MEDIA_BUS_FMT_YUV12_1X36: 2835 input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; 2836 input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; 2837 input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; 2838 break; 2839 case MEDIA_BUS_FMT_UYVY12_1X24: 2840 input_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; 2841 input_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; 2842 input_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; 2843 break; 2844 2845 /* 16bit */ 2846 case MEDIA_BUS_FMT_RGB161616_1X48: 2847 input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; 2848 input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; 2849 break; 2850 case MEDIA_BUS_FMT_YUV16_1X48: 2851 input_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; 2852 input_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; 2853 break; 2854 2855 /*YUV 4:2:0 */ 2856 case MEDIA_BUS_FMT_UYYVYY8_0_5X24: 2857 case MEDIA_BUS_FMT_UYYVYY10_0_5X30: 2858 case MEDIA_BUS_FMT_UYYVYY12_0_5X36: 2859 case MEDIA_BUS_FMT_UYYVYY16_0_5X48: 2860 input_fmts[i++] = output_fmt; 2861 break; 2862 } 2863 2864 *num_input_fmts = i; 2865 2866 if (*num_input_fmts == 0) { 2867 kfree(input_fmts); 2868 input_fmts = NULL; 2869 } 2870 2871 return input_fmts; 2872} 2873 2874static int dw_hdmi_bridge_atomic_check(struct drm_bridge *bridge, 2875 struct drm_bridge_state *bridge_state, 2876 struct drm_crtc_state *crtc_state, 2877 struct drm_connector_state *conn_state) 2878{ 2879 struct dw_hdmi *hdmi = bridge->driver_private; 2880 2881 hdmi->hdmi_data.enc_out_bus_format = 2882 bridge_state->output_bus_cfg.format; 2883 2884 hdmi->hdmi_data.enc_in_bus_format = 2885 bridge_state->input_bus_cfg.format; 2886 2887 dev_dbg(hdmi->dev, "input format 0x%04x, output format 0x%04x\n", 2888 bridge_state->input_bus_cfg.format, 2889 bridge_state->output_bus_cfg.format); 2890 2891 return 0; 2892} 2893 2894static int dw_hdmi_bridge_attach(struct drm_bridge *bridge, 2895 enum drm_bridge_attach_flags flags) 2896{ 2897 struct dw_hdmi *hdmi = bridge->driver_private; 2898 2899 if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) 2900 return drm_bridge_attach(bridge->encoder, hdmi->next_bridge, 2901 bridge, flags); 2902 2903 return dw_hdmi_connector_create(hdmi); 2904} 2905 2906static void dw_hdmi_bridge_detach(struct drm_bridge *bridge) 2907{ 2908 struct dw_hdmi *hdmi = bridge->driver_private; 2909 2910 mutex_lock(&hdmi->cec_notifier_mutex); 2911 cec_notifier_conn_unregister(hdmi->cec_notifier); 2912 hdmi->cec_notifier = NULL; 2913 mutex_unlock(&hdmi->cec_notifier_mutex); 2914} 2915 2916static enum drm_mode_status 2917dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge, 2918 const struct drm_display_info *info, 2919 const struct drm_display_mode *mode) 2920{ 2921 struct dw_hdmi *hdmi = bridge->driver_private; 2922 const struct dw_hdmi_plat_data *pdata = hdmi->plat_data; 2923 enum drm_mode_status mode_status = MODE_OK; 2924 2925 /* We don't support double-clocked modes */ 2926 if (mode->flags & DRM_MODE_FLAG_DBLCLK) 2927 return MODE_BAD; 2928 2929 if (pdata->mode_valid) 2930 mode_status = pdata->mode_valid(hdmi, pdata->priv_data, info, 2931 mode); 2932 2933 return mode_status; 2934} 2935 2936static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge, 2937 const struct drm_display_mode *orig_mode, 2938 const struct drm_display_mode *mode) 2939{ 2940 struct dw_hdmi *hdmi = bridge->driver_private; 2941 2942 mutex_lock(&hdmi->mutex); 2943 2944 /* Store the display mode for plugin/DKMS poweron events */ 2945 drm_mode_copy(&hdmi->previous_mode, mode); 2946 2947 mutex_unlock(&hdmi->mutex); 2948} 2949 2950static void dw_hdmi_bridge_atomic_disable(struct drm_bridge *bridge, 2951 struct drm_bridge_state *old_state) 2952{ 2953 struct dw_hdmi *hdmi = bridge->driver_private; 2954 2955 mutex_lock(&hdmi->mutex); 2956 hdmi->disabled = true; 2957 hdmi->curr_conn = NULL; 2958 dw_hdmi_update_power(hdmi); 2959 dw_hdmi_update_phy_mask(hdmi); 2960 handle_plugged_change(hdmi, false); 2961 mutex_unlock(&hdmi->mutex); 2962} 2963 2964static void dw_hdmi_bridge_atomic_enable(struct drm_bridge *bridge, 2965 struct drm_bridge_state *old_state) 2966{ 2967 struct dw_hdmi *hdmi = bridge->driver_private; 2968 struct drm_atomic_state *state = old_state->base.state; 2969 struct drm_connector *connector; 2970 2971 connector = drm_atomic_get_new_connector_for_encoder(state, 2972 bridge->encoder); 2973 2974 mutex_lock(&hdmi->mutex); 2975 hdmi->disabled = false; 2976 hdmi->curr_conn = connector; 2977 dw_hdmi_update_power(hdmi); 2978 dw_hdmi_update_phy_mask(hdmi); 2979 handle_plugged_change(hdmi, true); 2980 mutex_unlock(&hdmi->mutex); 2981} 2982 2983static enum drm_connector_status dw_hdmi_bridge_detect(struct drm_bridge *bridge) 2984{ 2985 struct dw_hdmi *hdmi = bridge->driver_private; 2986 2987 return dw_hdmi_detect(hdmi); 2988} 2989 2990static const struct drm_edid *dw_hdmi_bridge_edid_read(struct drm_bridge *bridge, 2991 struct drm_connector *connector) 2992{ 2993 struct dw_hdmi *hdmi = bridge->driver_private; 2994 2995 return dw_hdmi_edid_read(hdmi, connector); 2996} 2997 2998static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = { 2999 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 3000 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 3001 .atomic_reset = drm_atomic_helper_bridge_reset, 3002 .attach = dw_hdmi_bridge_attach, 3003 .detach = dw_hdmi_bridge_detach, 3004 .atomic_check = dw_hdmi_bridge_atomic_check, 3005 .atomic_get_output_bus_fmts = dw_hdmi_bridge_atomic_get_output_bus_fmts, 3006 .atomic_get_input_bus_fmts = dw_hdmi_bridge_atomic_get_input_bus_fmts, 3007 .atomic_enable = dw_hdmi_bridge_atomic_enable, 3008 .atomic_disable = dw_hdmi_bridge_atomic_disable, 3009 .mode_set = dw_hdmi_bridge_mode_set, 3010 .mode_valid = dw_hdmi_bridge_mode_valid, 3011 .detect = dw_hdmi_bridge_detect, 3012 .edid_read = dw_hdmi_bridge_edid_read, 3013}; 3014 3015/* ----------------------------------------------------------------------------- 3016 * IRQ Handling 3017 */ 3018 3019static irqreturn_t dw_hdmi_i2c_irq(struct dw_hdmi *hdmi) 3020{ 3021 struct dw_hdmi_i2c *i2c = hdmi->i2c; 3022 unsigned int stat; 3023 3024 stat = hdmi_readb(hdmi, HDMI_IH_I2CM_STAT0); 3025 if (!stat) 3026 return IRQ_NONE; 3027 3028 hdmi_writeb(hdmi, stat, HDMI_IH_I2CM_STAT0); 3029 3030 i2c->stat = stat; 3031 3032 complete(&i2c->cmp); 3033 3034 return IRQ_HANDLED; 3035} 3036 3037static irqreturn_t dw_hdmi_hardirq(int irq, void *dev_id) 3038{ 3039 struct dw_hdmi *hdmi = dev_id; 3040 u8 intr_stat; 3041 irqreturn_t ret = IRQ_NONE; 3042 3043 if (hdmi->i2c) 3044 ret = dw_hdmi_i2c_irq(hdmi); 3045 3046 intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); 3047 if (intr_stat) { 3048 hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0); 3049 return IRQ_WAKE_THREAD; 3050 } 3051 3052 return ret; 3053} 3054 3055void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense) 3056{ 3057 mutex_lock(&hdmi->mutex); 3058 3059 if (!hdmi->force) { 3060 /* 3061 * If the RX sense status indicates we're disconnected, 3062 * clear the software rxsense status. 3063 */ 3064 if (!rx_sense) 3065 hdmi->rxsense = false; 3066 3067 /* 3068 * Only set the software rxsense status when both 3069 * rxsense and hpd indicates we're connected. 3070 * This avoids what seems to be bad behaviour in 3071 * at least iMX6S versions of the phy. 3072 */ 3073 if (hpd) 3074 hdmi->rxsense = true; 3075 3076 dw_hdmi_update_power(hdmi); 3077 dw_hdmi_update_phy_mask(hdmi); 3078 } 3079 mutex_unlock(&hdmi->mutex); 3080} 3081EXPORT_SYMBOL_GPL(dw_hdmi_setup_rx_sense); 3082 3083static irqreturn_t dw_hdmi_irq(int irq, void *dev_id) 3084{ 3085 struct dw_hdmi *hdmi = dev_id; 3086 u8 intr_stat, phy_int_pol, phy_pol_mask, phy_stat; 3087 enum drm_connector_status status = connector_status_unknown; 3088 3089 intr_stat = hdmi_readb(hdmi, HDMI_IH_PHY_STAT0); 3090 phy_int_pol = hdmi_readb(hdmi, HDMI_PHY_POL0); 3091 phy_stat = hdmi_readb(hdmi, HDMI_PHY_STAT0); 3092 3093 phy_pol_mask = 0; 3094 if (intr_stat & HDMI_IH_PHY_STAT0_HPD) 3095 phy_pol_mask |= HDMI_PHY_HPD; 3096 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE0) 3097 phy_pol_mask |= HDMI_PHY_RX_SENSE0; 3098 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE1) 3099 phy_pol_mask |= HDMI_PHY_RX_SENSE1; 3100 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE2) 3101 phy_pol_mask |= HDMI_PHY_RX_SENSE2; 3102 if (intr_stat & HDMI_IH_PHY_STAT0_RX_SENSE3) 3103 phy_pol_mask |= HDMI_PHY_RX_SENSE3; 3104 3105 if (phy_pol_mask) 3106 hdmi_modb(hdmi, ~phy_int_pol, phy_pol_mask, HDMI_PHY_POL0); 3107 3108 /* 3109 * RX sense tells us whether the TDMS transmitters are detecting 3110 * load - in other words, there's something listening on the 3111 * other end of the link. Use this to decide whether we should 3112 * power on the phy as HPD may be toggled by the sink to merely 3113 * ask the source to re-read the EDID. 3114 */ 3115 if (intr_stat & 3116 (HDMI_IH_PHY_STAT0_RX_SENSE | HDMI_IH_PHY_STAT0_HPD)) { 3117 dw_hdmi_setup_rx_sense(hdmi, 3118 phy_stat & HDMI_PHY_HPD, 3119 phy_stat & HDMI_PHY_RX_SENSE); 3120 3121 if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) { 3122 mutex_lock(&hdmi->cec_notifier_mutex); 3123 cec_notifier_phys_addr_invalidate(hdmi->cec_notifier); 3124 mutex_unlock(&hdmi->cec_notifier_mutex); 3125 } 3126 3127 if (phy_stat & HDMI_PHY_HPD) 3128 status = connector_status_connected; 3129 3130 if (!(phy_stat & (HDMI_PHY_HPD | HDMI_PHY_RX_SENSE))) 3131 status = connector_status_disconnected; 3132 } 3133 3134 if (status != connector_status_unknown) { 3135 dev_dbg(hdmi->dev, "EVENT=%s\n", 3136 status == connector_status_connected ? 3137 "plugin" : "plugout"); 3138 3139 if (hdmi->bridge.dev) { 3140 drm_helper_hpd_irq_event(hdmi->bridge.dev); 3141 drm_bridge_hpd_notify(&hdmi->bridge, status); 3142 } 3143 } 3144 3145 hdmi_writeb(hdmi, intr_stat, HDMI_IH_PHY_STAT0); 3146 hdmi_writeb(hdmi, ~(HDMI_IH_PHY_STAT0_HPD | HDMI_IH_PHY_STAT0_RX_SENSE), 3147 HDMI_IH_MUTE_PHY_STAT0); 3148 3149 return IRQ_HANDLED; 3150} 3151 3152static const struct dw_hdmi_phy_data dw_hdmi_phys[] = { 3153 { 3154 .type = DW_HDMI_PHY_DWC_HDMI_TX_PHY, 3155 .name = "DWC HDMI TX PHY", 3156 .gen = 1, 3157 }, { 3158 .type = DW_HDMI_PHY_DWC_MHL_PHY_HEAC, 3159 .name = "DWC MHL PHY + HEAC PHY", 3160 .gen = 2, 3161 .has_svsret = true, 3162 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, 3163 }, { 3164 .type = DW_HDMI_PHY_DWC_MHL_PHY, 3165 .name = "DWC MHL PHY", 3166 .gen = 2, 3167 .has_svsret = true, 3168 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, 3169 }, { 3170 .type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY_HEAC, 3171 .name = "DWC HDMI 3D TX PHY + HEAC PHY", 3172 .gen = 2, 3173 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, 3174 }, { 3175 .type = DW_HDMI_PHY_DWC_HDMI_3D_TX_PHY, 3176 .name = "DWC HDMI 3D TX PHY", 3177 .gen = 2, 3178 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, 3179 }, { 3180 .type = DW_HDMI_PHY_DWC_HDMI20_TX_PHY, 3181 .name = "DWC HDMI 2.0 TX PHY", 3182 .gen = 2, 3183 .has_svsret = true, 3184 .configure = hdmi_phy_configure_dwc_hdmi_3d_tx, 3185 }, { 3186 .type = DW_HDMI_PHY_VENDOR_PHY, 3187 .name = "Vendor PHY", 3188 } 3189}; 3190 3191static int dw_hdmi_detect_phy(struct dw_hdmi *hdmi) 3192{ 3193 unsigned int i; 3194 u8 phy_type; 3195 3196 phy_type = hdmi->plat_data->phy_force_vendor ? 3197 DW_HDMI_PHY_VENDOR_PHY : 3198 hdmi_readb(hdmi, HDMI_CONFIG2_ID); 3199 3200 if (phy_type == DW_HDMI_PHY_VENDOR_PHY) { 3201 /* Vendor PHYs require support from the glue layer. */ 3202 if (!hdmi->plat_data->phy_ops || !hdmi->plat_data->phy_name) { 3203 dev_err(hdmi->dev, 3204 "Vendor HDMI PHY not supported by glue layer\n"); 3205 return -ENODEV; 3206 } 3207 3208 hdmi->phy.ops = hdmi->plat_data->phy_ops; 3209 hdmi->phy.data = hdmi->plat_data->phy_data; 3210 hdmi->phy.name = hdmi->plat_data->phy_name; 3211 return 0; 3212 } 3213 3214 /* Synopsys PHYs are handled internally. */ 3215 for (i = 0; i < ARRAY_SIZE(dw_hdmi_phys); ++i) { 3216 if (dw_hdmi_phys[i].type == phy_type) { 3217 hdmi->phy.ops = &dw_hdmi_synopsys_phy_ops; 3218 hdmi->phy.name = dw_hdmi_phys[i].name; 3219 hdmi->phy.data = (void *)&dw_hdmi_phys[i]; 3220 3221 if (!dw_hdmi_phys[i].configure && 3222 !hdmi->plat_data->configure_phy) { 3223 dev_err(hdmi->dev, "%s requires platform support\n", 3224 hdmi->phy.name); 3225 return -ENODEV; 3226 } 3227 3228 return 0; 3229 } 3230 } 3231 3232 dev_err(hdmi->dev, "Unsupported HDMI PHY type (%02x)\n", phy_type); 3233 return -ENODEV; 3234} 3235 3236static void dw_hdmi_cec_enable(struct dw_hdmi *hdmi) 3237{ 3238 mutex_lock(&hdmi->mutex); 3239 hdmi->mc_clkdis &= ~HDMI_MC_CLKDIS_CECCLK_DISABLE; 3240 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); 3241 mutex_unlock(&hdmi->mutex); 3242} 3243 3244static void dw_hdmi_cec_disable(struct dw_hdmi *hdmi) 3245{ 3246 mutex_lock(&hdmi->mutex); 3247 hdmi->mc_clkdis |= HDMI_MC_CLKDIS_CECCLK_DISABLE; 3248 hdmi_writeb(hdmi, hdmi->mc_clkdis, HDMI_MC_CLKDIS); 3249 mutex_unlock(&hdmi->mutex); 3250} 3251 3252static const struct dw_hdmi_cec_ops dw_hdmi_cec_ops = { 3253 .write = hdmi_writeb, 3254 .read = hdmi_readb, 3255 .enable = dw_hdmi_cec_enable, 3256 .disable = dw_hdmi_cec_disable, 3257}; 3258 3259static const struct regmap_config hdmi_regmap_8bit_config = { 3260 .reg_bits = 32, 3261 .val_bits = 8, 3262 .reg_stride = 1, 3263 .max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR, 3264}; 3265 3266static const struct regmap_config hdmi_regmap_32bit_config = { 3267 .reg_bits = 32, 3268 .val_bits = 32, 3269 .reg_stride = 4, 3270 .max_register = HDMI_I2CM_FS_SCL_LCNT_0_ADDR << 2, 3271}; 3272 3273static void dw_hdmi_init_hw(struct dw_hdmi *hdmi) 3274{ 3275 initialize_hdmi_ih_mutes(hdmi); 3276 3277 /* 3278 * Reset HDMI DDC I2C master controller and mute I2CM interrupts. 3279 * Even if we are using a separate i2c adapter doing this doesn't 3280 * hurt. 3281 */ 3282 dw_hdmi_i2c_init(hdmi); 3283 3284 if (hdmi->phy.ops->setup_hpd) 3285 hdmi->phy.ops->setup_hpd(hdmi, hdmi->phy.data); 3286} 3287 3288/* ----------------------------------------------------------------------------- 3289 * Probe/remove API, used from platforms based on the DRM bridge API. 3290 */ 3291 3292static int dw_hdmi_parse_dt(struct dw_hdmi *hdmi) 3293{ 3294 struct device_node *endpoint; 3295 struct device_node *remote; 3296 3297 if (!hdmi->plat_data->output_port) 3298 return 0; 3299 3300 endpoint = of_graph_get_endpoint_by_regs(hdmi->dev->of_node, 3301 hdmi->plat_data->output_port, 3302 -1); 3303 if (!endpoint) { 3304 /* 3305 * On platforms whose bindings don't make the output port 3306 * mandatory (such as Rockchip) the plat_data->output_port 3307 * field isn't set, so it's safe to make this a fatal error. 3308 */ 3309 dev_err(hdmi->dev, "Missing endpoint in port@%u\n", 3310 hdmi->plat_data->output_port); 3311 return -ENODEV; 3312 } 3313 3314 remote = of_graph_get_remote_port_parent(endpoint); 3315 of_node_put(endpoint); 3316 if (!remote) { 3317 dev_err(hdmi->dev, "Endpoint in port@%u unconnected\n", 3318 hdmi->plat_data->output_port); 3319 return -ENODEV; 3320 } 3321 3322 if (!of_device_is_available(remote)) { 3323 dev_err(hdmi->dev, "port@%u remote device is disabled\n", 3324 hdmi->plat_data->output_port); 3325 of_node_put(remote); 3326 return -ENODEV; 3327 } 3328 3329 hdmi->next_bridge = of_drm_find_bridge(remote); 3330 of_node_put(remote); 3331 if (!hdmi->next_bridge) 3332 return -EPROBE_DEFER; 3333 3334 return 0; 3335} 3336 3337bool dw_hdmi_bus_fmt_is_420(struct dw_hdmi *hdmi) 3338{ 3339 return hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format); 3340} 3341EXPORT_SYMBOL_GPL(dw_hdmi_bus_fmt_is_420); 3342 3343struct dw_hdmi *dw_hdmi_probe(struct platform_device *pdev, 3344 const struct dw_hdmi_plat_data *plat_data) 3345{ 3346 struct device *dev = &pdev->dev; 3347 struct device_node *np = dev->of_node; 3348 struct platform_device_info pdevinfo; 3349 struct device_node *ddc_node; 3350 struct dw_hdmi_cec_data cec; 3351 struct dw_hdmi *hdmi; 3352 struct resource *iores = NULL; 3353 int irq; 3354 int ret; 3355 u32 val = 1; 3356 u8 prod_id0; 3357 u8 prod_id1; 3358 u8 config0; 3359 u8 config3; 3360 3361 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); 3362 if (!hdmi) 3363 return ERR_PTR(-ENOMEM); 3364 3365 hdmi->plat_data = plat_data; 3366 hdmi->dev = dev; 3367 hdmi->sample_rate = 48000; 3368 hdmi->channels = 2; 3369 hdmi->disabled = true; 3370 hdmi->rxsense = true; 3371 hdmi->phy_mask = (u8)~(HDMI_PHY_HPD | HDMI_PHY_RX_SENSE); 3372 hdmi->mc_clkdis = 0x7f; 3373 hdmi->last_connector_result = connector_status_disconnected; 3374 3375 mutex_init(&hdmi->mutex); 3376 mutex_init(&hdmi->audio_mutex); 3377 mutex_init(&hdmi->cec_notifier_mutex); 3378 spin_lock_init(&hdmi->audio_lock); 3379 3380 ret = dw_hdmi_parse_dt(hdmi); 3381 if (ret < 0) 3382 return ERR_PTR(ret); 3383 3384 ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0); 3385 if (ddc_node) { 3386 hdmi->ddc = of_get_i2c_adapter_by_node(ddc_node); 3387 of_node_put(ddc_node); 3388 if (!hdmi->ddc) { 3389 dev_dbg(hdmi->dev, "failed to read ddc node\n"); 3390 return ERR_PTR(-EPROBE_DEFER); 3391 } 3392 3393 } else { 3394 dev_dbg(hdmi->dev, "no ddc property found\n"); 3395 } 3396 3397 if (!plat_data->regm) { 3398 const struct regmap_config *reg_config; 3399 3400 of_property_read_u32(np, "reg-io-width", &val); 3401 switch (val) { 3402 case 4: 3403 reg_config = &hdmi_regmap_32bit_config; 3404 hdmi->reg_shift = 2; 3405 break; 3406 case 1: 3407 reg_config = &hdmi_regmap_8bit_config; 3408 break; 3409 default: 3410 dev_err(dev, "reg-io-width must be 1 or 4\n"); 3411 return ERR_PTR(-EINVAL); 3412 } 3413 3414 iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); 3415 hdmi->regs = devm_ioremap_resource(dev, iores); 3416 if (IS_ERR(hdmi->regs)) { 3417 ret = PTR_ERR(hdmi->regs); 3418 goto err_res; 3419 } 3420 3421 hdmi->regm = devm_regmap_init_mmio(dev, hdmi->regs, reg_config); 3422 if (IS_ERR(hdmi->regm)) { 3423 dev_err(dev, "Failed to configure regmap\n"); 3424 ret = PTR_ERR(hdmi->regm); 3425 goto err_res; 3426 } 3427 } else { 3428 hdmi->regm = plat_data->regm; 3429 } 3430 3431 hdmi->isfr_clk = devm_clk_get(hdmi->dev, "isfr"); 3432 if (IS_ERR(hdmi->isfr_clk)) { 3433 ret = PTR_ERR(hdmi->isfr_clk); 3434 dev_err(hdmi->dev, "Unable to get HDMI isfr clk: %d\n", ret); 3435 goto err_res; 3436 } 3437 3438 ret = clk_prepare_enable(hdmi->isfr_clk); 3439 if (ret) { 3440 dev_err(hdmi->dev, "Cannot enable HDMI isfr clock: %d\n", ret); 3441 goto err_res; 3442 } 3443 3444 hdmi->iahb_clk = devm_clk_get(hdmi->dev, "iahb"); 3445 if (IS_ERR(hdmi->iahb_clk)) { 3446 ret = PTR_ERR(hdmi->iahb_clk); 3447 dev_err(hdmi->dev, "Unable to get HDMI iahb clk: %d\n", ret); 3448 goto err_isfr; 3449 } 3450 3451 ret = clk_prepare_enable(hdmi->iahb_clk); 3452 if (ret) { 3453 dev_err(hdmi->dev, "Cannot enable HDMI iahb clock: %d\n", ret); 3454 goto err_isfr; 3455 } 3456 3457 hdmi->cec_clk = devm_clk_get(hdmi->dev, "cec"); 3458 if (PTR_ERR(hdmi->cec_clk) == -ENOENT) { 3459 hdmi->cec_clk = NULL; 3460 } else if (IS_ERR(hdmi->cec_clk)) { 3461 ret = PTR_ERR(hdmi->cec_clk); 3462 if (ret != -EPROBE_DEFER) 3463 dev_err(hdmi->dev, "Cannot get HDMI cec clock: %d\n", 3464 ret); 3465 3466 hdmi->cec_clk = NULL; 3467 goto err_iahb; 3468 } else { 3469 ret = clk_prepare_enable(hdmi->cec_clk); 3470 if (ret) { 3471 dev_err(hdmi->dev, "Cannot enable HDMI cec clock: %d\n", 3472 ret); 3473 goto err_iahb; 3474 } 3475 } 3476 3477 /* Product and revision IDs */ 3478 hdmi->version = (hdmi_readb(hdmi, HDMI_DESIGN_ID) << 8) 3479 | (hdmi_readb(hdmi, HDMI_REVISION_ID) << 0); 3480 prod_id0 = hdmi_readb(hdmi, HDMI_PRODUCT_ID0); 3481 prod_id1 = hdmi_readb(hdmi, HDMI_PRODUCT_ID1); 3482 3483 if (prod_id0 != HDMI_PRODUCT_ID0_HDMI_TX || 3484 (prod_id1 & ~HDMI_PRODUCT_ID1_HDCP) != HDMI_PRODUCT_ID1_HDMI_TX) { 3485 dev_err(dev, "Unsupported HDMI controller (%04x:%02x:%02x)\n", 3486 hdmi->version, prod_id0, prod_id1); 3487 ret = -ENODEV; 3488 goto err_iahb; 3489 } 3490 3491 ret = dw_hdmi_detect_phy(hdmi); 3492 if (ret < 0) 3493 goto err_iahb; 3494 3495 dev_info(dev, "Detected HDMI TX controller v%x.%03x %s HDCP (%s)\n", 3496 hdmi->version >> 12, hdmi->version & 0xfff, 3497 prod_id1 & HDMI_PRODUCT_ID1_HDCP ? "with" : "without", 3498 hdmi->phy.name); 3499 3500 dw_hdmi_init_hw(hdmi); 3501 3502 irq = platform_get_irq(pdev, 0); 3503 if (irq < 0) { 3504 ret = irq; 3505 goto err_iahb; 3506 } 3507 3508 ret = devm_request_threaded_irq(dev, irq, dw_hdmi_hardirq, 3509 dw_hdmi_irq, IRQF_SHARED, 3510 dev_name(dev), hdmi); 3511 if (ret) 3512 goto err_iahb; 3513 3514 /* 3515 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator 3516 * N and cts values before enabling phy 3517 */ 3518 hdmi_init_clk_regenerator(hdmi); 3519 3520 /* If DDC bus is not specified, try to register HDMI I2C bus */ 3521 if (!hdmi->ddc) { 3522 /* Look for (optional) stuff related to unwedging */ 3523 hdmi->pinctrl = devm_pinctrl_get(dev); 3524 if (!IS_ERR(hdmi->pinctrl)) { 3525 hdmi->unwedge_state = 3526 pinctrl_lookup_state(hdmi->pinctrl, "unwedge"); 3527 hdmi->default_state = 3528 pinctrl_lookup_state(hdmi->pinctrl, "default"); 3529 3530 if (IS_ERR(hdmi->default_state) || 3531 IS_ERR(hdmi->unwedge_state)) { 3532 if (!IS_ERR(hdmi->unwedge_state)) 3533 dev_warn(dev, 3534 "Unwedge requires default pinctrl\n"); 3535 hdmi->default_state = NULL; 3536 hdmi->unwedge_state = NULL; 3537 } 3538 } 3539 3540 hdmi->ddc = dw_hdmi_i2c_adapter(hdmi); 3541 if (IS_ERR(hdmi->ddc)) 3542 hdmi->ddc = NULL; 3543 } 3544 3545 hdmi->bridge.driver_private = hdmi; 3546 hdmi->bridge.funcs = &dw_hdmi_bridge_funcs; 3547 hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID 3548 | DRM_BRIDGE_OP_HPD; 3549 hdmi->bridge.interlace_allowed = true; 3550 hdmi->bridge.ddc = hdmi->ddc; 3551 hdmi->bridge.of_node = pdev->dev.of_node; 3552 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 3553 3554 memset(&pdevinfo, 0, sizeof(pdevinfo)); 3555 pdevinfo.parent = dev; 3556 pdevinfo.id = PLATFORM_DEVID_AUTO; 3557 3558 config0 = hdmi_readb(hdmi, HDMI_CONFIG0_ID); 3559 config3 = hdmi_readb(hdmi, HDMI_CONFIG3_ID); 3560 3561 if (iores && config3 & HDMI_CONFIG3_AHBAUDDMA) { 3562 struct dw_hdmi_audio_data audio; 3563 3564 audio.phys = iores->start; 3565 audio.base = hdmi->regs; 3566 audio.irq = irq; 3567 audio.hdmi = hdmi; 3568 audio.get_eld = hdmi_audio_get_eld; 3569 hdmi->enable_audio = dw_hdmi_ahb_audio_enable; 3570 hdmi->disable_audio = dw_hdmi_ahb_audio_disable; 3571 3572 pdevinfo.name = "dw-hdmi-ahb-audio"; 3573 pdevinfo.data = &audio; 3574 pdevinfo.size_data = sizeof(audio); 3575 pdevinfo.dma_mask = DMA_BIT_MASK(32); 3576 hdmi->audio = platform_device_register_full(&pdevinfo); 3577 } else if (config0 & HDMI_CONFIG0_I2S) { 3578 struct dw_hdmi_i2s_audio_data audio; 3579 3580 audio.hdmi = hdmi; 3581 audio.get_eld = hdmi_audio_get_eld; 3582 audio.write = hdmi_writeb; 3583 audio.read = hdmi_readb; 3584 hdmi->enable_audio = dw_hdmi_i2s_audio_enable; 3585 hdmi->disable_audio = dw_hdmi_i2s_audio_disable; 3586 3587 pdevinfo.name = "dw-hdmi-i2s-audio"; 3588 pdevinfo.data = &audio; 3589 pdevinfo.size_data = sizeof(audio); 3590 pdevinfo.dma_mask = DMA_BIT_MASK(32); 3591 hdmi->audio = platform_device_register_full(&pdevinfo); 3592 } else if (iores && config3 & HDMI_CONFIG3_GPAUD) { 3593 struct dw_hdmi_audio_data audio; 3594 3595 audio.phys = iores->start; 3596 audio.base = hdmi->regs; 3597 audio.irq = irq; 3598 audio.hdmi = hdmi; 3599 audio.get_eld = hdmi_audio_get_eld; 3600 3601 hdmi->enable_audio = dw_hdmi_gp_audio_enable; 3602 hdmi->disable_audio = dw_hdmi_gp_audio_disable; 3603 3604 pdevinfo.name = "dw-hdmi-gp-audio"; 3605 pdevinfo.id = PLATFORM_DEVID_NONE; 3606 pdevinfo.data = &audio; 3607 pdevinfo.size_data = sizeof(audio); 3608 pdevinfo.dma_mask = DMA_BIT_MASK(32); 3609 hdmi->audio = platform_device_register_full(&pdevinfo); 3610 } 3611 3612 if (!plat_data->disable_cec && (config0 & HDMI_CONFIG0_CEC)) { 3613 cec.hdmi = hdmi; 3614 cec.ops = &dw_hdmi_cec_ops; 3615 cec.irq = irq; 3616 3617 pdevinfo.name = "dw-hdmi-cec"; 3618 pdevinfo.data = &cec; 3619 pdevinfo.size_data = sizeof(cec); 3620 pdevinfo.dma_mask = 0; 3621 3622 hdmi->cec = platform_device_register_full(&pdevinfo); 3623 } 3624 3625 drm_bridge_add(&hdmi->bridge); 3626 3627 return hdmi; 3628 3629err_iahb: 3630 clk_disable_unprepare(hdmi->iahb_clk); 3631 clk_disable_unprepare(hdmi->cec_clk); 3632err_isfr: 3633 clk_disable_unprepare(hdmi->isfr_clk); 3634err_res: 3635 i2c_put_adapter(hdmi->ddc); 3636 3637 return ERR_PTR(ret); 3638} 3639EXPORT_SYMBOL_GPL(dw_hdmi_probe); 3640 3641void dw_hdmi_remove(struct dw_hdmi *hdmi) 3642{ 3643 drm_bridge_remove(&hdmi->bridge); 3644 3645 if (hdmi->audio && !IS_ERR(hdmi->audio)) 3646 platform_device_unregister(hdmi->audio); 3647 if (!IS_ERR(hdmi->cec)) 3648 platform_device_unregister(hdmi->cec); 3649 3650 /* Disable all interrupts */ 3651 hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0); 3652 3653 clk_disable_unprepare(hdmi->iahb_clk); 3654 clk_disable_unprepare(hdmi->isfr_clk); 3655 clk_disable_unprepare(hdmi->cec_clk); 3656 3657 if (hdmi->i2c) 3658 i2c_del_adapter(&hdmi->i2c->adap); 3659 else 3660 i2c_put_adapter(hdmi->ddc); 3661} 3662EXPORT_SYMBOL_GPL(dw_hdmi_remove); 3663 3664/* ----------------------------------------------------------------------------- 3665 * Bind/unbind API, used from platforms based on the component framework. 3666 */ 3667struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, 3668 struct drm_encoder *encoder, 3669 const struct dw_hdmi_plat_data *plat_data) 3670{ 3671 struct dw_hdmi *hdmi; 3672 int ret; 3673 3674 hdmi = dw_hdmi_probe(pdev, plat_data); 3675 if (IS_ERR(hdmi)) 3676 return hdmi; 3677 3678 ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0); 3679 if (ret) { 3680 dw_hdmi_remove(hdmi); 3681 return ERR_PTR(ret); 3682 } 3683 3684 return hdmi; 3685} 3686EXPORT_SYMBOL_GPL(dw_hdmi_bind); 3687 3688void dw_hdmi_unbind(struct dw_hdmi *hdmi) 3689{ 3690 dw_hdmi_remove(hdmi); 3691} 3692EXPORT_SYMBOL_GPL(dw_hdmi_unbind); 3693 3694void dw_hdmi_resume(struct dw_hdmi *hdmi) 3695{ 3696 dw_hdmi_init_hw(hdmi); 3697} 3698EXPORT_SYMBOL_GPL(dw_hdmi_resume); 3699 3700MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); 3701MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>"); 3702MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>"); 3703MODULE_AUTHOR("Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>"); 3704MODULE_DESCRIPTION("DW HDMI transmitter driver"); 3705MODULE_LICENSE("GPL"); 3706MODULE_ALIAS("platform:dw-hdmi"); 3707