1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 2015 Broadcom 4 * Copyright (c) 2014 The Linux Foundation. All rights reserved. 5 * Copyright (C) 2013 Red Hat 6 * Author: Rob Clark <robdclark@gmail.com> 7 */ 8 9 /** 10 * DOC: VC4 Falcon HDMI module 11 * 12 * The HDMI core has a state machine and a PHY. On BCM2835, most of 13 * the unit operates off of the HSM clock from CPRMAN. It also 14 * internally uses the PLLH_PIX clock for the PHY. 15 * 16 * HDMI infoframes are kept within a small packet ram, where each 17 * packet can be individually enabled for including in a frame. 18 * 19 * HDMI audio is implemented entirely within the HDMI IP block. A 20 * register in the HDMI encoder takes SPDIF frames from the DMA engine 21 * and transfers them over an internal MAI (multi-channel audio 22 * interconnect) bus to the encoder side for insertion into the video 23 * blank regions. 24 * 25 * The driver's HDMI encoder does not yet support power management. 26 * The HDMI encoder's power domain and the HSM/pixel clocks are kept 27 * continuously running, and only the HDMI logic and packet ram are 28 * powered off/on at disable/enable time. 29 * 30 * The driver does not yet support CEC control, though the HDMI 31 * encoder block has CEC support. 32 */ 33 34 #include <drm/display/drm_hdmi_helper.h> 35 #include <drm/display/drm_scdc_helper.h> 36 #include <drm/drm_atomic_helper.h> 37 #include <drm/drm_probe_helper.h> 38 #include <drm/drm_simple_kms_helper.h> 39 #include <linux/clk.h> 40 #include <linux/component.h> 41 #include <linux/gpio/consumer.h> 42 #include <linux/i2c.h> 43 #include <linux/of_address.h> 44 #include <linux/of_gpio.h> 45 #include <linux/of_platform.h> 46 #include <linux/pm_runtime.h> 47 #include <linux/rational.h> 48 #include <linux/reset.h> 49 #include <sound/dmaengine_pcm.h> 50 #include <sound/hdmi-codec.h> 51 #include <sound/pcm_drm_eld.h> 52 #include <sound/pcm_params.h> 53 #include <sound/soc.h> 54 #include "media/cec.h" 55 #include "vc4_drv.h" 56 #include "vc4_hdmi.h" 57 #include "vc4_hdmi_regs.h" 58 #include "vc4_regs.h" 59 60 #define VC5_HDMI_HORZA_HFP_SHIFT 16 61 #define VC5_HDMI_HORZA_HFP_MASK VC4_MASK(28, 16) 62 #define VC5_HDMI_HORZA_VPOS BIT(15) 63 #define VC5_HDMI_HORZA_HPOS BIT(14) 64 #define VC5_HDMI_HORZA_HAP_SHIFT 0 65 #define VC5_HDMI_HORZA_HAP_MASK VC4_MASK(13, 0) 66 67 #define VC5_HDMI_HORZB_HBP_SHIFT 16 68 #define VC5_HDMI_HORZB_HBP_MASK VC4_MASK(26, 16) 69 #define VC5_HDMI_HORZB_HSP_SHIFT 0 70 #define VC5_HDMI_HORZB_HSP_MASK VC4_MASK(10, 0) 71 72 #define VC5_HDMI_VERTA_VSP_SHIFT 24 73 #define VC5_HDMI_VERTA_VSP_MASK VC4_MASK(28, 24) 74 #define VC5_HDMI_VERTA_VFP_SHIFT 16 75 #define VC5_HDMI_VERTA_VFP_MASK VC4_MASK(22, 16) 76 #define VC5_HDMI_VERTA_VAL_SHIFT 0 77 #define VC5_HDMI_VERTA_VAL_MASK VC4_MASK(12, 0) 78 79 #define VC5_HDMI_VERTB_VSPO_SHIFT 16 80 #define VC5_HDMI_VERTB_VSPO_MASK VC4_MASK(29, 16) 81 82 #define VC4_HDMI_MISC_CONTROL_PIXEL_REP_SHIFT 0 83 #define VC4_HDMI_MISC_CONTROL_PIXEL_REP_MASK VC4_MASK(3, 0) 84 #define VC5_HDMI_MISC_CONTROL_PIXEL_REP_SHIFT 0 85 #define VC5_HDMI_MISC_CONTROL_PIXEL_REP_MASK VC4_MASK(3, 0) 86 87 #define VC5_HDMI_SCRAMBLER_CTL_ENABLE BIT(0) 88 89 #define VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE_SHIFT 8 90 #define VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE_MASK VC4_MASK(10, 8) 91 92 #define VC5_HDMI_DEEP_COLOR_CONFIG_1_COLOR_DEPTH_SHIFT 0 93 #define VC5_HDMI_DEEP_COLOR_CONFIG_1_COLOR_DEPTH_MASK VC4_MASK(3, 0) 94 95 #define VC5_HDMI_GCP_CONFIG_GCP_ENABLE BIT(31) 96 97 #define VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1_SHIFT 8 98 #define VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1_MASK VC4_MASK(15, 8) 99 100 # define VC4_HD_M_SW_RST BIT(2) 101 # define VC4_HD_M_ENABLE BIT(0) 102 103 #define HSM_MIN_CLOCK_FREQ 120000000 104 #define CEC_CLOCK_FREQ 40000 105 106 #define HDMI_14_MAX_TMDS_CLK (340 * 1000 * 1000) 107 108 static const char * const output_format_str[] = { 109 [VC4_HDMI_OUTPUT_RGB] = "RGB", 110 [VC4_HDMI_OUTPUT_YUV420] = "YUV 4:2:0", 111 [VC4_HDMI_OUTPUT_YUV422] = "YUV 4:2:2", 112 [VC4_HDMI_OUTPUT_YUV444] = "YUV 4:4:4", 113 }; 114 115 static const char *vc4_hdmi_output_fmt_str(enum vc4_hdmi_output_format fmt) 116 { 117 if (fmt >= ARRAY_SIZE(output_format_str)) 118 return "invalid"; 119 120 return output_format_str[fmt]; 121 } 122 123 static unsigned long long 124 vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode, 125 unsigned int bpc, enum vc4_hdmi_output_format fmt); 126 127 static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode, 128 unsigned int bpc, 129 enum vc4_hdmi_output_format fmt) 130 { 131 unsigned long long clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt); 132 133 return clock > HDMI_14_MAX_TMDS_CLK; 134 } 135 136 static bool vc4_hdmi_is_full_range_rgb(struct vc4_hdmi *vc4_hdmi, 137 const struct drm_display_mode *mode) 138 { 139 struct drm_display_info *display = &vc4_hdmi->connector.display_info; 140 141 return !display->is_hdmi || 142 drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL; 143 } 144 145 static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused) 146 { 147 struct drm_info_node *node = (struct drm_info_node *)m->private; 148 struct vc4_hdmi *vc4_hdmi = node->info_ent->data; 149 struct drm_printer p = drm_seq_file_printer(m); 150 151 drm_print_regset32(&p, &vc4_hdmi->hdmi_regset); 152 drm_print_regset32(&p, &vc4_hdmi->hd_regset); 153 drm_print_regset32(&p, &vc4_hdmi->cec_regset); 154 drm_print_regset32(&p, &vc4_hdmi->csc_regset); 155 drm_print_regset32(&p, &vc4_hdmi->dvp_regset); 156 drm_print_regset32(&p, &vc4_hdmi->phy_regset); 157 drm_print_regset32(&p, &vc4_hdmi->ram_regset); 158 drm_print_regset32(&p, &vc4_hdmi->rm_regset); 159 160 return 0; 161 } 162 163 static void vc4_hdmi_reset(struct vc4_hdmi *vc4_hdmi) 164 { 165 unsigned long flags; 166 167 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 168 169 HDMI_WRITE(HDMI_M_CTL, VC4_HD_M_SW_RST); 170 udelay(1); 171 HDMI_WRITE(HDMI_M_CTL, 0); 172 173 HDMI_WRITE(HDMI_M_CTL, VC4_HD_M_ENABLE); 174 175 HDMI_WRITE(HDMI_SW_RESET_CONTROL, 176 VC4_HDMI_SW_RESET_HDMI | 177 VC4_HDMI_SW_RESET_FORMAT_DETECT); 178 179 HDMI_WRITE(HDMI_SW_RESET_CONTROL, 0); 180 181 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 182 } 183 184 static void vc5_hdmi_reset(struct vc4_hdmi *vc4_hdmi) 185 { 186 unsigned long flags; 187 188 reset_control_reset(vc4_hdmi->reset); 189 190 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 191 192 HDMI_WRITE(HDMI_DVP_CTL, 0); 193 194 HDMI_WRITE(HDMI_CLOCK_STOP, 195 HDMI_READ(HDMI_CLOCK_STOP) | VC4_DVP_HT_CLOCK_STOP_PIXEL); 196 197 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 198 } 199 200 #ifdef CONFIG_DRM_VC4_HDMI_CEC 201 static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi) 202 { 203 unsigned long cec_rate = clk_get_rate(vc4_hdmi->cec_clock); 204 unsigned long flags; 205 u16 clk_cnt; 206 u32 value; 207 208 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 209 210 value = HDMI_READ(HDMI_CEC_CNTRL_1); 211 value &= ~VC4_HDMI_CEC_DIV_CLK_CNT_MASK; 212 213 /* 214 * Set the clock divider: the hsm_clock rate and this divider 215 * setting will give a 40 kHz CEC clock. 216 */ 217 clk_cnt = cec_rate / CEC_CLOCK_FREQ; 218 value |= clk_cnt << VC4_HDMI_CEC_DIV_CLK_CNT_SHIFT; 219 HDMI_WRITE(HDMI_CEC_CNTRL_1, value); 220 221 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 222 } 223 #else 224 static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi) {} 225 #endif 226 227 static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder); 228 229 static enum drm_connector_status 230 vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) 231 { 232 struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); 233 bool connected = false; 234 235 mutex_lock(&vc4_hdmi->mutex); 236 237 WARN_ON(pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev)); 238 239 if (vc4_hdmi->hpd_gpio) { 240 if (gpiod_get_value_cansleep(vc4_hdmi->hpd_gpio)) 241 connected = true; 242 } else { 243 if (vc4_hdmi->variant->hp_detect && 244 vc4_hdmi->variant->hp_detect(vc4_hdmi)) 245 connected = true; 246 } 247 248 if (connected) { 249 if (connector->status != connector_status_connected) { 250 struct edid *edid = drm_get_edid(connector, vc4_hdmi->ddc); 251 252 if (edid) { 253 cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid); 254 kfree(edid); 255 } 256 } 257 258 vc4_hdmi_enable_scrambling(&vc4_hdmi->encoder.base); 259 pm_runtime_put(&vc4_hdmi->pdev->dev); 260 mutex_unlock(&vc4_hdmi->mutex); 261 return connector_status_connected; 262 } 263 264 cec_phys_addr_invalidate(vc4_hdmi->cec_adap); 265 pm_runtime_put(&vc4_hdmi->pdev->dev); 266 mutex_unlock(&vc4_hdmi->mutex); 267 return connector_status_disconnected; 268 } 269 270 static void vc4_hdmi_connector_destroy(struct drm_connector *connector) 271 { 272 drm_connector_unregister(connector); 273 drm_connector_cleanup(connector); 274 } 275 276 static int vc4_hdmi_connector_get_modes(struct drm_connector *connector) 277 { 278 struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); 279 int ret = 0; 280 struct edid *edid; 281 282 mutex_lock(&vc4_hdmi->mutex); 283 284 edid = drm_get_edid(connector, vc4_hdmi->ddc); 285 cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid); 286 if (!edid) { 287 ret = -ENODEV; 288 goto out; 289 } 290 291 drm_connector_update_edid_property(connector, edid); 292 ret = drm_add_edid_modes(connector, edid); 293 kfree(edid); 294 295 if (vc4_hdmi->disable_4kp60) { 296 struct drm_device *drm = connector->dev; 297 struct drm_display_mode *mode; 298 299 list_for_each_entry(mode, &connector->probed_modes, head) { 300 if (vc4_hdmi_mode_needs_scrambling(mode, 8, VC4_HDMI_OUTPUT_RGB)) { 301 drm_warn_once(drm, "The core clock cannot reach frequencies high enough to support 4k @ 60Hz."); 302 drm_warn_once(drm, "Please change your config.txt file to add hdmi_enable_4kp60."); 303 } 304 } 305 } 306 307 out: 308 mutex_unlock(&vc4_hdmi->mutex); 309 310 return ret; 311 } 312 313 static int vc4_hdmi_connector_atomic_check(struct drm_connector *connector, 314 struct drm_atomic_state *state) 315 { 316 struct drm_connector_state *old_state = 317 drm_atomic_get_old_connector_state(state, connector); 318 struct drm_connector_state *new_state = 319 drm_atomic_get_new_connector_state(state, connector); 320 struct drm_crtc *crtc = new_state->crtc; 321 322 if (!crtc) 323 return 0; 324 325 if (old_state->colorspace != new_state->colorspace || 326 !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) { 327 struct drm_crtc_state *crtc_state; 328 329 crtc_state = drm_atomic_get_crtc_state(state, crtc); 330 if (IS_ERR(crtc_state)) 331 return PTR_ERR(crtc_state); 332 333 crtc_state->mode_changed = true; 334 } 335 336 return 0; 337 } 338 339 static void vc4_hdmi_connector_reset(struct drm_connector *connector) 340 { 341 struct vc4_hdmi_connector_state *old_state = 342 conn_state_to_vc4_hdmi_conn_state(connector->state); 343 struct vc4_hdmi_connector_state *new_state = 344 kzalloc(sizeof(*new_state), GFP_KERNEL); 345 346 if (connector->state) 347 __drm_atomic_helper_connector_destroy_state(connector->state); 348 349 kfree(old_state); 350 __drm_atomic_helper_connector_reset(connector, &new_state->base); 351 352 if (!new_state) 353 return; 354 355 new_state->base.max_bpc = 8; 356 new_state->base.max_requested_bpc = 8; 357 new_state->output_format = VC4_HDMI_OUTPUT_RGB; 358 drm_atomic_helper_connector_tv_reset(connector); 359 } 360 361 static struct drm_connector_state * 362 vc4_hdmi_connector_duplicate_state(struct drm_connector *connector) 363 { 364 struct drm_connector_state *conn_state = connector->state; 365 struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state); 366 struct vc4_hdmi_connector_state *new_state; 367 368 new_state = kzalloc(sizeof(*new_state), GFP_KERNEL); 369 if (!new_state) 370 return NULL; 371 372 new_state->tmds_char_rate = vc4_state->tmds_char_rate; 373 new_state->output_bpc = vc4_state->output_bpc; 374 new_state->output_format = vc4_state->output_format; 375 __drm_atomic_helper_connector_duplicate_state(connector, &new_state->base); 376 377 return &new_state->base; 378 } 379 380 static const struct drm_connector_funcs vc4_hdmi_connector_funcs = { 381 .detect = vc4_hdmi_connector_detect, 382 .fill_modes = drm_helper_probe_single_connector_modes, 383 .destroy = vc4_hdmi_connector_destroy, 384 .reset = vc4_hdmi_connector_reset, 385 .atomic_duplicate_state = vc4_hdmi_connector_duplicate_state, 386 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 387 }; 388 389 static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = { 390 .get_modes = vc4_hdmi_connector_get_modes, 391 .atomic_check = vc4_hdmi_connector_atomic_check, 392 }; 393 394 static int vc4_hdmi_connector_init(struct drm_device *dev, 395 struct vc4_hdmi *vc4_hdmi) 396 { 397 struct drm_connector *connector = &vc4_hdmi->connector; 398 struct drm_encoder *encoder = &vc4_hdmi->encoder.base; 399 int ret; 400 401 drm_connector_init_with_ddc(dev, connector, 402 &vc4_hdmi_connector_funcs, 403 DRM_MODE_CONNECTOR_HDMIA, 404 vc4_hdmi->ddc); 405 drm_connector_helper_add(connector, &vc4_hdmi_connector_helper_funcs); 406 407 /* 408 * Some of the properties below require access to state, like bpc. 409 * Allocate some default initial connector state with our reset helper. 410 */ 411 if (connector->funcs->reset) 412 connector->funcs->reset(connector); 413 414 /* Create and attach TV margin props to this connector. */ 415 ret = drm_mode_create_tv_margin_properties(dev); 416 if (ret) 417 return ret; 418 419 ret = drm_mode_create_hdmi_colorspace_property(connector); 420 if (ret) 421 return ret; 422 423 drm_connector_attach_colorspace_property(connector); 424 drm_connector_attach_tv_margin_properties(connector); 425 drm_connector_attach_max_bpc_property(connector, 8, 12); 426 427 connector->polled = (DRM_CONNECTOR_POLL_CONNECT | 428 DRM_CONNECTOR_POLL_DISCONNECT); 429 430 connector->interlace_allowed = 1; 431 connector->doublescan_allowed = 0; 432 connector->stereo_allowed = 1; 433 434 if (vc4_hdmi->variant->supports_hdr) 435 drm_connector_attach_hdr_output_metadata_property(connector); 436 437 drm_connector_attach_encoder(connector, encoder); 438 439 return 0; 440 } 441 442 static int vc4_hdmi_stop_packet(struct drm_encoder *encoder, 443 enum hdmi_infoframe_type type, 444 bool poll) 445 { 446 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 447 u32 packet_id = type - 0x80; 448 unsigned long flags; 449 450 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 451 HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 452 HDMI_READ(HDMI_RAM_PACKET_CONFIG) & ~BIT(packet_id)); 453 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 454 455 if (!poll) 456 return 0; 457 458 return wait_for(!(HDMI_READ(HDMI_RAM_PACKET_STATUS) & 459 BIT(packet_id)), 100); 460 } 461 462 static void vc4_hdmi_write_infoframe(struct drm_encoder *encoder, 463 union hdmi_infoframe *frame) 464 { 465 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 466 u32 packet_id = frame->any.type - 0x80; 467 const struct vc4_hdmi_register *ram_packet_start = 468 &vc4_hdmi->variant->registers[HDMI_RAM_PACKET_START]; 469 u32 packet_reg = ram_packet_start->offset + VC4_HDMI_PACKET_STRIDE * packet_id; 470 u32 packet_reg_next = ram_packet_start->offset + 471 VC4_HDMI_PACKET_STRIDE * (packet_id + 1); 472 void __iomem *base = __vc4_hdmi_get_field_base(vc4_hdmi, 473 ram_packet_start->reg); 474 uint8_t buffer[VC4_HDMI_PACKET_STRIDE] = {}; 475 unsigned long flags; 476 ssize_t len, i; 477 int ret; 478 479 WARN_ONCE(!(HDMI_READ(HDMI_RAM_PACKET_CONFIG) & 480 VC4_HDMI_RAM_PACKET_ENABLE), 481 "Packet RAM has to be on to store the packet."); 482 483 len = hdmi_infoframe_pack(frame, buffer, sizeof(buffer)); 484 if (len < 0) 485 return; 486 487 ret = vc4_hdmi_stop_packet(encoder, frame->any.type, true); 488 if (ret) { 489 DRM_ERROR("Failed to wait for infoframe to go idle: %d\n", ret); 490 return; 491 } 492 493 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 494 495 for (i = 0; i < len; i += 7) { 496 writel(buffer[i + 0] << 0 | 497 buffer[i + 1] << 8 | 498 buffer[i + 2] << 16, 499 base + packet_reg); 500 packet_reg += 4; 501 502 writel(buffer[i + 3] << 0 | 503 buffer[i + 4] << 8 | 504 buffer[i + 5] << 16 | 505 buffer[i + 6] << 24, 506 base + packet_reg); 507 packet_reg += 4; 508 } 509 510 /* 511 * clear remainder of packet ram as it's included in the 512 * infoframe and triggers a checksum error on hdmi analyser 513 */ 514 for (; packet_reg < packet_reg_next; packet_reg += 4) 515 writel(0, base + packet_reg); 516 517 HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 518 HDMI_READ(HDMI_RAM_PACKET_CONFIG) | BIT(packet_id)); 519 520 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 521 522 ret = wait_for((HDMI_READ(HDMI_RAM_PACKET_STATUS) & 523 BIT(packet_id)), 100); 524 if (ret) 525 DRM_ERROR("Failed to wait for infoframe to start: %d\n", ret); 526 } 527 528 static void vc4_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame, 529 enum vc4_hdmi_output_format fmt) 530 { 531 switch (fmt) { 532 case VC4_HDMI_OUTPUT_RGB: 533 frame->colorspace = HDMI_COLORSPACE_RGB; 534 break; 535 536 case VC4_HDMI_OUTPUT_YUV420: 537 frame->colorspace = HDMI_COLORSPACE_YUV420; 538 break; 539 540 case VC4_HDMI_OUTPUT_YUV422: 541 frame->colorspace = HDMI_COLORSPACE_YUV422; 542 break; 543 544 case VC4_HDMI_OUTPUT_YUV444: 545 frame->colorspace = HDMI_COLORSPACE_YUV444; 546 break; 547 548 default: 549 break; 550 } 551 } 552 553 static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder) 554 { 555 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 556 struct drm_connector *connector = &vc4_hdmi->connector; 557 struct drm_connector_state *cstate = connector->state; 558 struct vc4_hdmi_connector_state *vc4_state = 559 conn_state_to_vc4_hdmi_conn_state(cstate); 560 const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode; 561 union hdmi_infoframe frame; 562 int ret; 563 564 lockdep_assert_held(&vc4_hdmi->mutex); 565 566 ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, 567 connector, mode); 568 if (ret < 0) { 569 DRM_ERROR("couldn't fill AVI infoframe\n"); 570 return; 571 } 572 573 drm_hdmi_avi_infoframe_quant_range(&frame.avi, 574 connector, mode, 575 vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode) ? 576 HDMI_QUANTIZATION_RANGE_FULL : 577 HDMI_QUANTIZATION_RANGE_LIMITED); 578 drm_hdmi_avi_infoframe_colorimetry(&frame.avi, cstate); 579 vc4_hdmi_avi_infoframe_colorspace(&frame.avi, vc4_state->output_format); 580 drm_hdmi_avi_infoframe_bars(&frame.avi, cstate); 581 582 vc4_hdmi_write_infoframe(encoder, &frame); 583 } 584 585 static void vc4_hdmi_set_spd_infoframe(struct drm_encoder *encoder) 586 { 587 union hdmi_infoframe frame; 588 int ret; 589 590 ret = hdmi_spd_infoframe_init(&frame.spd, "Broadcom", "Videocore"); 591 if (ret < 0) { 592 DRM_ERROR("couldn't fill SPD infoframe\n"); 593 return; 594 } 595 596 frame.spd.sdi = HDMI_SPD_SDI_PC; 597 598 vc4_hdmi_write_infoframe(encoder, &frame); 599 } 600 601 static void vc4_hdmi_set_audio_infoframe(struct drm_encoder *encoder) 602 { 603 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 604 struct hdmi_audio_infoframe *audio = &vc4_hdmi->audio.infoframe; 605 union hdmi_infoframe frame; 606 607 memcpy(&frame.audio, audio, sizeof(*audio)); 608 609 if (vc4_hdmi->packet_ram_enabled) 610 vc4_hdmi_write_infoframe(encoder, &frame); 611 } 612 613 static void vc4_hdmi_set_hdr_infoframe(struct drm_encoder *encoder) 614 { 615 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 616 struct drm_connector *connector = &vc4_hdmi->connector; 617 struct drm_connector_state *conn_state = connector->state; 618 union hdmi_infoframe frame; 619 620 lockdep_assert_held(&vc4_hdmi->mutex); 621 622 if (!vc4_hdmi->variant->supports_hdr) 623 return; 624 625 if (!conn_state->hdr_output_metadata) 626 return; 627 628 if (drm_hdmi_infoframe_set_hdr_metadata(&frame.drm, conn_state)) 629 return; 630 631 vc4_hdmi_write_infoframe(encoder, &frame); 632 } 633 634 static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder) 635 { 636 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 637 638 lockdep_assert_held(&vc4_hdmi->mutex); 639 640 vc4_hdmi_set_avi_infoframe(encoder); 641 vc4_hdmi_set_spd_infoframe(encoder); 642 /* 643 * If audio was streaming, then we need to reenabled the audio 644 * infoframe here during encoder_enable. 645 */ 646 if (vc4_hdmi->audio.streaming) 647 vc4_hdmi_set_audio_infoframe(encoder); 648 649 vc4_hdmi_set_hdr_infoframe(encoder); 650 } 651 652 static bool vc4_hdmi_supports_scrambling(struct drm_encoder *encoder, 653 struct drm_display_mode *mode) 654 { 655 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 656 struct drm_display_info *display = &vc4_hdmi->connector.display_info; 657 658 lockdep_assert_held(&vc4_hdmi->mutex); 659 660 if (!display->is_hdmi) 661 return false; 662 663 if (!display->hdmi.scdc.supported || 664 !display->hdmi.scdc.scrambling.supported) 665 return false; 666 667 return true; 668 } 669 670 #define SCRAMBLING_POLLING_DELAY_MS 1000 671 672 static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder) 673 { 674 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 675 struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode; 676 unsigned long flags; 677 678 lockdep_assert_held(&vc4_hdmi->mutex); 679 680 if (!vc4_hdmi_supports_scrambling(encoder, mode)) 681 return; 682 683 if (!vc4_hdmi_mode_needs_scrambling(mode, 684 vc4_hdmi->output_bpc, 685 vc4_hdmi->output_format)) 686 return; 687 688 drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, true); 689 drm_scdc_set_scrambling(vc4_hdmi->ddc, true); 690 691 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 692 HDMI_WRITE(HDMI_SCRAMBLER_CTL, HDMI_READ(HDMI_SCRAMBLER_CTL) | 693 VC5_HDMI_SCRAMBLER_CTL_ENABLE); 694 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 695 696 vc4_hdmi->scdc_enabled = true; 697 698 queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work, 699 msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS)); 700 } 701 702 static void vc4_hdmi_disable_scrambling(struct drm_encoder *encoder) 703 { 704 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 705 unsigned long flags; 706 707 lockdep_assert_held(&vc4_hdmi->mutex); 708 709 if (!vc4_hdmi->scdc_enabled) 710 return; 711 712 vc4_hdmi->scdc_enabled = false; 713 714 if (delayed_work_pending(&vc4_hdmi->scrambling_work)) 715 cancel_delayed_work_sync(&vc4_hdmi->scrambling_work); 716 717 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 718 HDMI_WRITE(HDMI_SCRAMBLER_CTL, HDMI_READ(HDMI_SCRAMBLER_CTL) & 719 ~VC5_HDMI_SCRAMBLER_CTL_ENABLE); 720 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 721 722 drm_scdc_set_scrambling(vc4_hdmi->ddc, false); 723 drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, false); 724 } 725 726 static void vc4_hdmi_scrambling_wq(struct work_struct *work) 727 { 728 struct vc4_hdmi *vc4_hdmi = container_of(to_delayed_work(work), 729 struct vc4_hdmi, 730 scrambling_work); 731 732 if (drm_scdc_get_scrambling_status(vc4_hdmi->ddc)) 733 return; 734 735 drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, true); 736 drm_scdc_set_scrambling(vc4_hdmi->ddc, true); 737 738 queue_delayed_work(system_wq, &vc4_hdmi->scrambling_work, 739 msecs_to_jiffies(SCRAMBLING_POLLING_DELAY_MS)); 740 } 741 742 static void vc4_hdmi_encoder_post_crtc_disable(struct drm_encoder *encoder, 743 struct drm_atomic_state *state) 744 { 745 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 746 unsigned long flags; 747 748 mutex_lock(&vc4_hdmi->mutex); 749 750 vc4_hdmi->packet_ram_enabled = false; 751 752 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 753 754 HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 0); 755 756 HDMI_WRITE(HDMI_VID_CTL, HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_CLRRGB); 757 758 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 759 760 mdelay(1); 761 762 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 763 HDMI_WRITE(HDMI_VID_CTL, 764 HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_ENABLE); 765 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 766 767 vc4_hdmi_disable_scrambling(encoder); 768 769 mutex_unlock(&vc4_hdmi->mutex); 770 } 771 772 static void vc4_hdmi_encoder_post_crtc_powerdown(struct drm_encoder *encoder, 773 struct drm_atomic_state *state) 774 { 775 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 776 unsigned long flags; 777 int ret; 778 779 mutex_lock(&vc4_hdmi->mutex); 780 781 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 782 HDMI_WRITE(HDMI_VID_CTL, 783 HDMI_READ(HDMI_VID_CTL) | VC4_HD_VID_CTL_BLANKPIX); 784 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 785 786 if (vc4_hdmi->variant->phy_disable) 787 vc4_hdmi->variant->phy_disable(vc4_hdmi); 788 789 clk_disable_unprepare(vc4_hdmi->pixel_bvb_clock); 790 clk_disable_unprepare(vc4_hdmi->pixel_clock); 791 792 ret = pm_runtime_put(&vc4_hdmi->pdev->dev); 793 if (ret < 0) 794 DRM_ERROR("Failed to release power domain: %d\n", ret); 795 796 mutex_unlock(&vc4_hdmi->mutex); 797 } 798 799 static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, 800 struct drm_connector_state *state, 801 const struct drm_display_mode *mode) 802 { 803 unsigned long flags; 804 u32 csc_ctl; 805 806 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 807 808 csc_ctl = VC4_SET_FIELD(VC4_HD_CSC_CTL_ORDER_BGR, 809 VC4_HD_CSC_CTL_ORDER); 810 811 if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) { 812 /* CEA VICs other than #1 requre limited range RGB 813 * output unless overridden by an AVI infoframe. 814 * Apply a colorspace conversion to squash 0-255 down 815 * to 16-235. The matrix here is: 816 * 817 * [ 0 0 0.8594 16] 818 * [ 0 0.8594 0 16] 819 * [ 0.8594 0 0 16] 820 * [ 0 0 0 1] 821 */ 822 csc_ctl |= VC4_HD_CSC_CTL_ENABLE; 823 csc_ctl |= VC4_HD_CSC_CTL_RGB2YCC; 824 csc_ctl |= VC4_SET_FIELD(VC4_HD_CSC_CTL_MODE_CUSTOM, 825 VC4_HD_CSC_CTL_MODE); 826 827 HDMI_WRITE(HDMI_CSC_12_11, (0x000 << 16) | 0x000); 828 HDMI_WRITE(HDMI_CSC_14_13, (0x100 << 16) | 0x6e0); 829 HDMI_WRITE(HDMI_CSC_22_21, (0x6e0 << 16) | 0x000); 830 HDMI_WRITE(HDMI_CSC_24_23, (0x100 << 16) | 0x000); 831 HDMI_WRITE(HDMI_CSC_32_31, (0x000 << 16) | 0x6e0); 832 HDMI_WRITE(HDMI_CSC_34_33, (0x100 << 16) | 0x000); 833 } 834 835 /* The RGB order applies even when CSC is disabled. */ 836 HDMI_WRITE(HDMI_CSC_CTL, csc_ctl); 837 838 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 839 } 840 841 /* 842 * If we need to output Full Range RGB, then use the unity matrix 843 * 844 * [ 1 0 0 0] 845 * [ 0 1 0 0] 846 * [ 0 0 1 0] 847 * 848 * Matrix is signed 2p13 fixed point, with signed 9p6 offsets 849 */ 850 static const u16 vc5_hdmi_csc_full_rgb_unity[3][4] = { 851 { 0x2000, 0x0000, 0x0000, 0x0000 }, 852 { 0x0000, 0x2000, 0x0000, 0x0000 }, 853 { 0x0000, 0x0000, 0x2000, 0x0000 }, 854 }; 855 856 /* 857 * CEA VICs other than #1 require limited range RGB output unless 858 * overridden by an AVI infoframe. Apply a colorspace conversion to 859 * squash 0-255 down to 16-235. The matrix here is: 860 * 861 * [ 0.8594 0 0 16] 862 * [ 0 0.8594 0 16] 863 * [ 0 0 0.8594 16] 864 * 865 * Matrix is signed 2p13 fixed point, with signed 9p6 offsets 866 */ 867 static const u16 vc5_hdmi_csc_full_rgb_to_limited_rgb[3][4] = { 868 { 0x1b80, 0x0000, 0x0000, 0x0400 }, 869 { 0x0000, 0x1b80, 0x0000, 0x0400 }, 870 { 0x0000, 0x0000, 0x1b80, 0x0400 }, 871 }; 872 873 /* 874 * Conversion between Full Range RGB and Full Range YUV422 using the 875 * BT.709 Colorspace 876 * 877 * 878 * [ 0.181906 0.611804 0.061758 16 ] 879 * [ -0.100268 -0.337232 0.437500 128 ] 880 * [ 0.437500 -0.397386 -0.040114 128 ] 881 * 882 * Matrix is signed 2p13 fixed point, with signed 9p6 offsets 883 */ 884 static const u16 vc5_hdmi_csc_full_rgb_to_limited_yuv422_bt709[3][4] = { 885 { 0x05d2, 0x1394, 0x01fa, 0x0400 }, 886 { 0xfccc, 0xf536, 0x0e00, 0x2000 }, 887 { 0x0e00, 0xf34a, 0xfeb8, 0x2000 }, 888 }; 889 890 /* 891 * Conversion between Full Range RGB and Full Range YUV444 using the 892 * BT.709 Colorspace 893 * 894 * [ -0.100268 -0.337232 0.437500 128 ] 895 * [ 0.437500 -0.397386 -0.040114 128 ] 896 * [ 0.181906 0.611804 0.061758 16 ] 897 * 898 * Matrix is signed 2p13 fixed point, with signed 9p6 offsets 899 */ 900 static const u16 vc5_hdmi_csc_full_rgb_to_limited_yuv444_bt709[3][4] = { 901 { 0xfccc, 0xf536, 0x0e00, 0x2000 }, 902 { 0x0e00, 0xf34a, 0xfeb8, 0x2000 }, 903 { 0x05d2, 0x1394, 0x01fa, 0x0400 }, 904 }; 905 906 static void vc5_hdmi_set_csc_coeffs(struct vc4_hdmi *vc4_hdmi, 907 const u16 coeffs[3][4]) 908 { 909 lockdep_assert_held(&vc4_hdmi->hw_lock); 910 911 HDMI_WRITE(HDMI_CSC_12_11, (coeffs[0][1] << 16) | coeffs[0][0]); 912 HDMI_WRITE(HDMI_CSC_14_13, (coeffs[0][3] << 16) | coeffs[0][2]); 913 HDMI_WRITE(HDMI_CSC_22_21, (coeffs[1][1] << 16) | coeffs[1][0]); 914 HDMI_WRITE(HDMI_CSC_24_23, (coeffs[1][3] << 16) | coeffs[1][2]); 915 HDMI_WRITE(HDMI_CSC_32_31, (coeffs[2][1] << 16) | coeffs[2][0]); 916 HDMI_WRITE(HDMI_CSC_34_33, (coeffs[2][3] << 16) | coeffs[2][2]); 917 } 918 919 static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi, 920 struct drm_connector_state *state, 921 const struct drm_display_mode *mode) 922 { 923 struct vc4_hdmi_connector_state *vc4_state = 924 conn_state_to_vc4_hdmi_conn_state(state); 925 unsigned long flags; 926 u32 if_cfg = 0; 927 u32 if_xbar = 0x543210; 928 u32 csc_chan_ctl = 0; 929 u32 csc_ctl = VC5_MT_CP_CSC_CTL_ENABLE | VC4_SET_FIELD(VC4_HD_CSC_CTL_MODE_CUSTOM, 930 VC5_MT_CP_CSC_CTL_MODE); 931 932 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 933 934 switch (vc4_state->output_format) { 935 case VC4_HDMI_OUTPUT_YUV444: 936 vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_yuv444_bt709); 937 break; 938 939 case VC4_HDMI_OUTPUT_YUV422: 940 csc_ctl |= VC4_SET_FIELD(VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD, 941 VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422) | 942 VC5_MT_CP_CSC_CTL_USE_444_TO_422 | 943 VC5_MT_CP_CSC_CTL_USE_RNG_SUPPRESSION; 944 945 csc_chan_ctl |= VC4_SET_FIELD(VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP_LEGACY_STYLE, 946 VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP); 947 948 if_cfg |= VC4_SET_FIELD(VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_FORMAT_422_LEGACY, 949 VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422); 950 951 vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_yuv422_bt709); 952 break; 953 954 case VC4_HDMI_OUTPUT_RGB: 955 if_xbar = 0x354021; 956 957 if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) 958 vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb); 959 else 960 vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity); 961 break; 962 963 default: 964 break; 965 } 966 967 HDMI_WRITE(HDMI_VEC_INTERFACE_CFG, if_cfg); 968 HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, if_xbar); 969 HDMI_WRITE(HDMI_CSC_CHANNEL_CTL, csc_chan_ctl); 970 HDMI_WRITE(HDMI_CSC_CTL, csc_ctl); 971 972 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 973 } 974 975 static void vc4_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi, 976 struct drm_connector_state *state, 977 struct drm_display_mode *mode) 978 { 979 bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC; 980 bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC; 981 bool interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE; 982 u32 pixel_rep = (mode->flags & DRM_MODE_FLAG_DBLCLK) ? 2 : 1; 983 u32 verta = (VC4_SET_FIELD(mode->crtc_vsync_end - mode->crtc_vsync_start, 984 VC4_HDMI_VERTA_VSP) | 985 VC4_SET_FIELD(mode->crtc_vsync_start - mode->crtc_vdisplay, 986 VC4_HDMI_VERTA_VFP) | 987 VC4_SET_FIELD(mode->crtc_vdisplay, VC4_HDMI_VERTA_VAL)); 988 u32 vertb = (VC4_SET_FIELD(0, VC4_HDMI_VERTB_VSPO) | 989 VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end + 990 interlaced, 991 VC4_HDMI_VERTB_VBP)); 992 u32 vertb_even = (VC4_SET_FIELD(0, VC4_HDMI_VERTB_VSPO) | 993 VC4_SET_FIELD(mode->crtc_vtotal - 994 mode->crtc_vsync_end, 995 VC4_HDMI_VERTB_VBP)); 996 unsigned long flags; 997 u32 reg; 998 999 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1000 1001 HDMI_WRITE(HDMI_HORZA, 1002 (vsync_pos ? VC4_HDMI_HORZA_VPOS : 0) | 1003 (hsync_pos ? VC4_HDMI_HORZA_HPOS : 0) | 1004 VC4_SET_FIELD(mode->hdisplay * pixel_rep, 1005 VC4_HDMI_HORZA_HAP)); 1006 1007 HDMI_WRITE(HDMI_HORZB, 1008 VC4_SET_FIELD((mode->htotal - 1009 mode->hsync_end) * pixel_rep, 1010 VC4_HDMI_HORZB_HBP) | 1011 VC4_SET_FIELD((mode->hsync_end - 1012 mode->hsync_start) * pixel_rep, 1013 VC4_HDMI_HORZB_HSP) | 1014 VC4_SET_FIELD((mode->hsync_start - 1015 mode->hdisplay) * pixel_rep, 1016 VC4_HDMI_HORZB_HFP)); 1017 1018 HDMI_WRITE(HDMI_VERTA0, verta); 1019 HDMI_WRITE(HDMI_VERTA1, verta); 1020 1021 HDMI_WRITE(HDMI_VERTB0, vertb_even); 1022 HDMI_WRITE(HDMI_VERTB1, vertb); 1023 1024 reg = HDMI_READ(HDMI_MISC_CONTROL); 1025 reg &= ~VC4_HDMI_MISC_CONTROL_PIXEL_REP_MASK; 1026 reg |= VC4_SET_FIELD(pixel_rep - 1, VC4_HDMI_MISC_CONTROL_PIXEL_REP); 1027 HDMI_WRITE(HDMI_MISC_CONTROL, reg); 1028 1029 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1030 } 1031 1032 static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi, 1033 struct drm_connector_state *state, 1034 struct drm_display_mode *mode) 1035 { 1036 const struct vc4_hdmi_connector_state *vc4_state = 1037 conn_state_to_vc4_hdmi_conn_state(state); 1038 bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC; 1039 bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC; 1040 bool interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE; 1041 u32 pixel_rep = (mode->flags & DRM_MODE_FLAG_DBLCLK) ? 2 : 1; 1042 u32 verta = (VC4_SET_FIELD(mode->crtc_vsync_end - mode->crtc_vsync_start, 1043 VC5_HDMI_VERTA_VSP) | 1044 VC4_SET_FIELD(mode->crtc_vsync_start - mode->crtc_vdisplay, 1045 VC5_HDMI_VERTA_VFP) | 1046 VC4_SET_FIELD(mode->crtc_vdisplay, VC5_HDMI_VERTA_VAL)); 1047 u32 vertb = (VC4_SET_FIELD(mode->htotal >> (2 - pixel_rep), 1048 VC5_HDMI_VERTB_VSPO) | 1049 VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end, 1050 VC4_HDMI_VERTB_VBP)); 1051 u32 vertb_even = (VC4_SET_FIELD(0, VC5_HDMI_VERTB_VSPO) | 1052 VC4_SET_FIELD(mode->crtc_vtotal - 1053 mode->crtc_vsync_end - interlaced, 1054 VC4_HDMI_VERTB_VBP)); 1055 unsigned long flags; 1056 unsigned char gcp; 1057 bool gcp_en; 1058 u32 reg; 1059 1060 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1061 1062 HDMI_WRITE(HDMI_HORZA, 1063 (vsync_pos ? VC5_HDMI_HORZA_VPOS : 0) | 1064 (hsync_pos ? VC5_HDMI_HORZA_HPOS : 0) | 1065 VC4_SET_FIELD(mode->hdisplay * pixel_rep, 1066 VC5_HDMI_HORZA_HAP) | 1067 VC4_SET_FIELD((mode->hsync_start - 1068 mode->hdisplay) * pixel_rep, 1069 VC5_HDMI_HORZA_HFP)); 1070 1071 HDMI_WRITE(HDMI_HORZB, 1072 VC4_SET_FIELD((mode->htotal - 1073 mode->hsync_end) * pixel_rep, 1074 VC5_HDMI_HORZB_HBP) | 1075 VC4_SET_FIELD((mode->hsync_end - 1076 mode->hsync_start) * pixel_rep, 1077 VC5_HDMI_HORZB_HSP)); 1078 1079 HDMI_WRITE(HDMI_VERTA0, verta); 1080 HDMI_WRITE(HDMI_VERTA1, verta); 1081 1082 HDMI_WRITE(HDMI_VERTB0, vertb_even); 1083 HDMI_WRITE(HDMI_VERTB1, vertb); 1084 1085 switch (vc4_state->output_bpc) { 1086 case 12: 1087 gcp = 6; 1088 gcp_en = true; 1089 break; 1090 case 10: 1091 gcp = 5; 1092 gcp_en = true; 1093 break; 1094 case 8: 1095 default: 1096 gcp = 4; 1097 gcp_en = false; 1098 break; 1099 } 1100 1101 /* 1102 * YCC422 is always 36-bit and not considered deep colour so 1103 * doesn't signal in GCP. 1104 */ 1105 if (vc4_state->output_format == VC4_HDMI_OUTPUT_YUV422) { 1106 gcp = 4; 1107 gcp_en = false; 1108 } 1109 1110 reg = HDMI_READ(HDMI_DEEP_COLOR_CONFIG_1); 1111 reg &= ~(VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE_MASK | 1112 VC5_HDMI_DEEP_COLOR_CONFIG_1_COLOR_DEPTH_MASK); 1113 reg |= VC4_SET_FIELD(2, VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE) | 1114 VC4_SET_FIELD(gcp, VC5_HDMI_DEEP_COLOR_CONFIG_1_COLOR_DEPTH); 1115 HDMI_WRITE(HDMI_DEEP_COLOR_CONFIG_1, reg); 1116 1117 reg = HDMI_READ(HDMI_GCP_WORD_1); 1118 reg &= ~VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1_MASK; 1119 reg |= VC4_SET_FIELD(gcp, VC5_HDMI_GCP_WORD_1_GCP_SUBPACKET_BYTE_1); 1120 HDMI_WRITE(HDMI_GCP_WORD_1, reg); 1121 1122 reg = HDMI_READ(HDMI_GCP_CONFIG); 1123 reg &= ~VC5_HDMI_GCP_CONFIG_GCP_ENABLE; 1124 reg |= gcp_en ? VC5_HDMI_GCP_CONFIG_GCP_ENABLE : 0; 1125 HDMI_WRITE(HDMI_GCP_CONFIG, reg); 1126 1127 reg = HDMI_READ(HDMI_MISC_CONTROL); 1128 reg &= ~VC5_HDMI_MISC_CONTROL_PIXEL_REP_MASK; 1129 reg |= VC4_SET_FIELD(pixel_rep - 1, VC5_HDMI_MISC_CONTROL_PIXEL_REP); 1130 HDMI_WRITE(HDMI_MISC_CONTROL, reg); 1131 1132 HDMI_WRITE(HDMI_CLOCK_STOP, 0); 1133 1134 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1135 } 1136 1137 static void vc4_hdmi_recenter_fifo(struct vc4_hdmi *vc4_hdmi) 1138 { 1139 unsigned long flags; 1140 u32 drift; 1141 int ret; 1142 1143 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1144 1145 drift = HDMI_READ(HDMI_FIFO_CTL); 1146 drift &= VC4_HDMI_FIFO_VALID_WRITE_MASK; 1147 1148 HDMI_WRITE(HDMI_FIFO_CTL, 1149 drift & ~VC4_HDMI_FIFO_CTL_RECENTER); 1150 HDMI_WRITE(HDMI_FIFO_CTL, 1151 drift | VC4_HDMI_FIFO_CTL_RECENTER); 1152 1153 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1154 1155 usleep_range(1000, 1100); 1156 1157 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1158 1159 HDMI_WRITE(HDMI_FIFO_CTL, 1160 drift & ~VC4_HDMI_FIFO_CTL_RECENTER); 1161 HDMI_WRITE(HDMI_FIFO_CTL, 1162 drift | VC4_HDMI_FIFO_CTL_RECENTER); 1163 1164 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1165 1166 ret = wait_for(HDMI_READ(HDMI_FIFO_CTL) & 1167 VC4_HDMI_FIFO_CTL_RECENTER_DONE, 1); 1168 WARN_ONCE(ret, "Timeout waiting for " 1169 "VC4_HDMI_FIFO_CTL_RECENTER_DONE"); 1170 } 1171 1172 static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder, 1173 struct drm_atomic_state *state) 1174 { 1175 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 1176 struct drm_connector *connector = &vc4_hdmi->connector; 1177 struct drm_connector_state *conn_state = 1178 drm_atomic_get_new_connector_state(state, connector); 1179 struct vc4_hdmi_connector_state *vc4_conn_state = 1180 conn_state_to_vc4_hdmi_conn_state(conn_state); 1181 struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode; 1182 unsigned long tmds_char_rate = vc4_conn_state->tmds_char_rate; 1183 unsigned long bvb_rate, hsm_rate; 1184 unsigned long flags; 1185 int ret; 1186 1187 mutex_lock(&vc4_hdmi->mutex); 1188 1189 /* 1190 * As stated in RPi's vc4 firmware "HDMI state machine (HSM) clock must 1191 * be faster than pixel clock, infinitesimally faster, tested in 1192 * simulation. Otherwise, exact value is unimportant for HDMI 1193 * operation." This conflicts with bcm2835's vc4 documentation, which 1194 * states HSM's clock has to be at least 108% of the pixel clock. 1195 * 1196 * Real life tests reveal that vc4's firmware statement holds up, and 1197 * users are able to use pixel clocks closer to HSM's, namely for 1198 * 1920x1200@60Hz. So it was decided to have leave a 1% margin between 1199 * both clocks. Which, for RPi0-3 implies a maximum pixel clock of 1200 * 162MHz. 1201 * 1202 * Additionally, the AXI clock needs to be at least 25% of 1203 * pixel clock, but HSM ends up being the limiting factor. 1204 */ 1205 hsm_rate = max_t(unsigned long, 120000000, (tmds_char_rate / 100) * 101); 1206 ret = clk_set_min_rate(vc4_hdmi->hsm_clock, hsm_rate); 1207 if (ret) { 1208 DRM_ERROR("Failed to set HSM clock rate: %d\n", ret); 1209 goto out; 1210 } 1211 1212 ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev); 1213 if (ret < 0) { 1214 DRM_ERROR("Failed to retain power domain: %d\n", ret); 1215 goto out; 1216 } 1217 1218 ret = clk_set_rate(vc4_hdmi->pixel_clock, tmds_char_rate); 1219 if (ret) { 1220 DRM_ERROR("Failed to set pixel clock rate: %d\n", ret); 1221 goto err_put_runtime_pm; 1222 } 1223 1224 ret = clk_prepare_enable(vc4_hdmi->pixel_clock); 1225 if (ret) { 1226 DRM_ERROR("Failed to turn on pixel clock: %d\n", ret); 1227 goto err_put_runtime_pm; 1228 } 1229 1230 1231 vc4_hdmi_cec_update_clk_div(vc4_hdmi); 1232 1233 if (tmds_char_rate > 297000000) 1234 bvb_rate = 300000000; 1235 else if (tmds_char_rate > 148500000) 1236 bvb_rate = 150000000; 1237 else 1238 bvb_rate = 75000000; 1239 1240 ret = clk_set_min_rate(vc4_hdmi->pixel_bvb_clock, bvb_rate); 1241 if (ret) { 1242 DRM_ERROR("Failed to set pixel bvb clock rate: %d\n", ret); 1243 goto err_disable_pixel_clock; 1244 } 1245 1246 ret = clk_prepare_enable(vc4_hdmi->pixel_bvb_clock); 1247 if (ret) { 1248 DRM_ERROR("Failed to turn on pixel bvb clock: %d\n", ret); 1249 goto err_disable_pixel_clock; 1250 } 1251 1252 if (vc4_hdmi->variant->phy_init) 1253 vc4_hdmi->variant->phy_init(vc4_hdmi, vc4_conn_state); 1254 1255 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1256 1257 HDMI_WRITE(HDMI_SCHEDULER_CONTROL, 1258 HDMI_READ(HDMI_SCHEDULER_CONTROL) | 1259 VC4_HDMI_SCHEDULER_CONTROL_MANUAL_FORMAT | 1260 VC4_HDMI_SCHEDULER_CONTROL_IGNORE_VSYNC_PREDICTS); 1261 1262 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1263 1264 if (vc4_hdmi->variant->set_timings) 1265 vc4_hdmi->variant->set_timings(vc4_hdmi, conn_state, mode); 1266 1267 mutex_unlock(&vc4_hdmi->mutex); 1268 1269 return; 1270 1271 err_disable_pixel_clock: 1272 clk_disable_unprepare(vc4_hdmi->pixel_clock); 1273 err_put_runtime_pm: 1274 pm_runtime_put(&vc4_hdmi->pdev->dev); 1275 out: 1276 mutex_unlock(&vc4_hdmi->mutex); 1277 return; 1278 } 1279 1280 static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder, 1281 struct drm_atomic_state *state) 1282 { 1283 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 1284 struct drm_connector *connector = &vc4_hdmi->connector; 1285 struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode; 1286 struct drm_connector_state *conn_state = 1287 drm_atomic_get_new_connector_state(state, connector); 1288 unsigned long flags; 1289 1290 mutex_lock(&vc4_hdmi->mutex); 1291 1292 if (vc4_hdmi->variant->csc_setup) 1293 vc4_hdmi->variant->csc_setup(vc4_hdmi, conn_state, mode); 1294 1295 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1296 HDMI_WRITE(HDMI_FIFO_CTL, VC4_HDMI_FIFO_CTL_MASTER_SLAVE_N); 1297 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1298 1299 mutex_unlock(&vc4_hdmi->mutex); 1300 } 1301 1302 static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder, 1303 struct drm_atomic_state *state) 1304 { 1305 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 1306 struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode; 1307 struct drm_display_info *display = &vc4_hdmi->connector.display_info; 1308 bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC; 1309 bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC; 1310 unsigned long flags; 1311 int ret; 1312 1313 mutex_lock(&vc4_hdmi->mutex); 1314 1315 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1316 1317 HDMI_WRITE(HDMI_VID_CTL, 1318 VC4_HD_VID_CTL_ENABLE | 1319 VC4_HD_VID_CTL_CLRRGB | 1320 VC4_HD_VID_CTL_UNDERFLOW_ENABLE | 1321 VC4_HD_VID_CTL_FRAME_COUNTER_RESET | 1322 (vsync_pos ? 0 : VC4_HD_VID_CTL_VSYNC_LOW) | 1323 (hsync_pos ? 0 : VC4_HD_VID_CTL_HSYNC_LOW)); 1324 1325 HDMI_WRITE(HDMI_VID_CTL, 1326 HDMI_READ(HDMI_VID_CTL) & ~VC4_HD_VID_CTL_BLANKPIX); 1327 1328 if (display->is_hdmi) { 1329 HDMI_WRITE(HDMI_SCHEDULER_CONTROL, 1330 HDMI_READ(HDMI_SCHEDULER_CONTROL) | 1331 VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI); 1332 1333 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1334 1335 ret = wait_for(HDMI_READ(HDMI_SCHEDULER_CONTROL) & 1336 VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE, 1000); 1337 WARN_ONCE(ret, "Timeout waiting for " 1338 "VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE\n"); 1339 } else { 1340 HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 1341 HDMI_READ(HDMI_RAM_PACKET_CONFIG) & 1342 ~(VC4_HDMI_RAM_PACKET_ENABLE)); 1343 HDMI_WRITE(HDMI_SCHEDULER_CONTROL, 1344 HDMI_READ(HDMI_SCHEDULER_CONTROL) & 1345 ~VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI); 1346 1347 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1348 1349 ret = wait_for(!(HDMI_READ(HDMI_SCHEDULER_CONTROL) & 1350 VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE), 1000); 1351 WARN_ONCE(ret, "Timeout waiting for " 1352 "!VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE\n"); 1353 } 1354 1355 if (display->is_hdmi) { 1356 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1357 1358 WARN_ON(!(HDMI_READ(HDMI_SCHEDULER_CONTROL) & 1359 VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE)); 1360 1361 HDMI_WRITE(HDMI_RAM_PACKET_CONFIG, 1362 VC4_HDMI_RAM_PACKET_ENABLE); 1363 1364 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1365 vc4_hdmi->packet_ram_enabled = true; 1366 1367 vc4_hdmi_set_infoframes(encoder); 1368 } 1369 1370 vc4_hdmi_recenter_fifo(vc4_hdmi); 1371 vc4_hdmi_enable_scrambling(encoder); 1372 1373 mutex_unlock(&vc4_hdmi->mutex); 1374 } 1375 1376 static void vc4_hdmi_encoder_atomic_mode_set(struct drm_encoder *encoder, 1377 struct drm_crtc_state *crtc_state, 1378 struct drm_connector_state *conn_state) 1379 { 1380 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 1381 struct vc4_hdmi_connector_state *vc4_state = 1382 conn_state_to_vc4_hdmi_conn_state(conn_state); 1383 1384 mutex_lock(&vc4_hdmi->mutex); 1385 drm_mode_copy(&vc4_hdmi->saved_adjusted_mode, 1386 &crtc_state->adjusted_mode); 1387 vc4_hdmi->output_bpc = vc4_state->output_bpc; 1388 vc4_hdmi->output_format = vc4_state->output_format; 1389 mutex_unlock(&vc4_hdmi->mutex); 1390 } 1391 1392 static bool 1393 vc4_hdmi_sink_supports_format_bpc(const struct vc4_hdmi *vc4_hdmi, 1394 const struct drm_display_info *info, 1395 const struct drm_display_mode *mode, 1396 unsigned int format, unsigned int bpc) 1397 { 1398 struct drm_device *dev = vc4_hdmi->connector.dev; 1399 u8 vic = drm_match_cea_mode(mode); 1400 1401 if (vic == 1 && bpc != 8) { 1402 drm_dbg(dev, "VIC1 requires a bpc of 8, got %u\n", bpc); 1403 return false; 1404 } 1405 1406 if (!info->is_hdmi && 1407 (format != VC4_HDMI_OUTPUT_RGB || bpc != 8)) { 1408 drm_dbg(dev, "DVI Monitors require an RGB output at 8 bpc\n"); 1409 return false; 1410 } 1411 1412 switch (format) { 1413 case VC4_HDMI_OUTPUT_RGB: 1414 drm_dbg(dev, "RGB Format, checking the constraints.\n"); 1415 1416 if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444)) 1417 return false; 1418 1419 if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) { 1420 drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n"); 1421 return false; 1422 } 1423 1424 if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) { 1425 drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n"); 1426 return false; 1427 } 1428 1429 drm_dbg(dev, "RGB format supported in that configuration.\n"); 1430 1431 return true; 1432 1433 case VC4_HDMI_OUTPUT_YUV422: 1434 drm_dbg(dev, "YUV422 format, checking the constraints.\n"); 1435 1436 if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) { 1437 drm_dbg(dev, "Sink doesn't support YUV422.\n"); 1438 return false; 1439 } 1440 1441 if (bpc != 12) { 1442 drm_dbg(dev, "YUV422 only supports 12 bpc.\n"); 1443 return false; 1444 } 1445 1446 drm_dbg(dev, "YUV422 format supported in that configuration.\n"); 1447 1448 return true; 1449 1450 case VC4_HDMI_OUTPUT_YUV444: 1451 drm_dbg(dev, "YUV444 format, checking the constraints.\n"); 1452 1453 if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR444)) { 1454 drm_dbg(dev, "Sink doesn't support YUV444.\n"); 1455 return false; 1456 } 1457 1458 if (bpc == 10 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_30)) { 1459 drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n"); 1460 return false; 1461 } 1462 1463 if (bpc == 12 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_36)) { 1464 drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n"); 1465 return false; 1466 } 1467 1468 drm_dbg(dev, "YUV444 format supported in that configuration.\n"); 1469 1470 return true; 1471 } 1472 1473 return false; 1474 } 1475 1476 static enum drm_mode_status 1477 vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi, 1478 unsigned long long clock) 1479 { 1480 const struct drm_connector *connector = &vc4_hdmi->connector; 1481 const struct drm_display_info *info = &connector->display_info; 1482 1483 if (clock > vc4_hdmi->variant->max_pixel_clock) 1484 return MODE_CLOCK_HIGH; 1485 1486 if (vc4_hdmi->disable_4kp60 && clock > HDMI_14_MAX_TMDS_CLK) 1487 return MODE_CLOCK_HIGH; 1488 1489 if (info->max_tmds_clock && clock > (info->max_tmds_clock * 1000)) 1490 return MODE_CLOCK_HIGH; 1491 1492 return MODE_OK; 1493 } 1494 1495 static unsigned long long 1496 vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode, 1497 unsigned int bpc, 1498 enum vc4_hdmi_output_format fmt) 1499 { 1500 unsigned long long clock = mode->clock * 1000ULL; 1501 1502 if (mode->flags & DRM_MODE_FLAG_DBLCLK) 1503 clock = clock * 2; 1504 1505 if (fmt == VC4_HDMI_OUTPUT_YUV422) 1506 bpc = 8; 1507 1508 clock = clock * bpc; 1509 do_div(clock, 8); 1510 1511 return clock; 1512 } 1513 1514 static int 1515 vc4_hdmi_encoder_compute_clock(const struct vc4_hdmi *vc4_hdmi, 1516 struct vc4_hdmi_connector_state *vc4_state, 1517 const struct drm_display_mode *mode, 1518 unsigned int bpc, unsigned int fmt) 1519 { 1520 unsigned long long clock; 1521 1522 clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt); 1523 if (vc4_hdmi_encoder_clock_valid(vc4_hdmi, clock) != MODE_OK) 1524 return -EINVAL; 1525 1526 vc4_state->tmds_char_rate = clock; 1527 1528 return 0; 1529 } 1530 1531 static int 1532 vc4_hdmi_encoder_compute_format(const struct vc4_hdmi *vc4_hdmi, 1533 struct vc4_hdmi_connector_state *vc4_state, 1534 const struct drm_display_mode *mode, 1535 unsigned int bpc) 1536 { 1537 struct drm_device *dev = vc4_hdmi->connector.dev; 1538 const struct drm_connector *connector = &vc4_hdmi->connector; 1539 const struct drm_display_info *info = &connector->display_info; 1540 unsigned int format; 1541 1542 drm_dbg(dev, "Trying with an RGB output\n"); 1543 1544 format = VC4_HDMI_OUTPUT_RGB; 1545 if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) { 1546 int ret; 1547 1548 ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state, 1549 mode, bpc, format); 1550 if (!ret) { 1551 vc4_state->output_format = format; 1552 return 0; 1553 } 1554 } 1555 1556 drm_dbg(dev, "Failed, Trying with an YUV422 output\n"); 1557 1558 format = VC4_HDMI_OUTPUT_YUV422; 1559 if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) { 1560 int ret; 1561 1562 ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state, 1563 mode, bpc, format); 1564 if (!ret) { 1565 vc4_state->output_format = format; 1566 return 0; 1567 } 1568 } 1569 1570 drm_dbg(dev, "Failed. No Format Supported for that bpc count.\n"); 1571 1572 return -EINVAL; 1573 } 1574 1575 static int 1576 vc4_hdmi_encoder_compute_config(const struct vc4_hdmi *vc4_hdmi, 1577 struct vc4_hdmi_connector_state *vc4_state, 1578 const struct drm_display_mode *mode) 1579 { 1580 struct drm_device *dev = vc4_hdmi->connector.dev; 1581 struct drm_connector_state *conn_state = &vc4_state->base; 1582 unsigned int max_bpc = clamp_t(unsigned int, conn_state->max_bpc, 8, 12); 1583 unsigned int bpc; 1584 int ret; 1585 1586 for (bpc = max_bpc; bpc >= 8; bpc -= 2) { 1587 drm_dbg(dev, "Trying with a %d bpc output\n", bpc); 1588 1589 ret = vc4_hdmi_encoder_compute_format(vc4_hdmi, vc4_state, 1590 mode, bpc); 1591 if (ret) 1592 continue; 1593 1594 vc4_state->output_bpc = bpc; 1595 1596 drm_dbg(dev, 1597 "Mode %ux%u @ %uHz: Found configuration: bpc: %u, fmt: %s, clock: %llu\n", 1598 mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode), 1599 vc4_state->output_bpc, 1600 vc4_hdmi_output_fmt_str(vc4_state->output_format), 1601 vc4_state->tmds_char_rate); 1602 1603 break; 1604 } 1605 1606 return ret; 1607 } 1608 1609 #define WIFI_2_4GHz_CH1_MIN_FREQ 2400000000ULL 1610 #define WIFI_2_4GHz_CH1_MAX_FREQ 2422000000ULL 1611 1612 static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder, 1613 struct drm_crtc_state *crtc_state, 1614 struct drm_connector_state *conn_state) 1615 { 1616 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 1617 struct drm_connector *connector = &vc4_hdmi->connector; 1618 struct drm_connector_state *old_conn_state = 1619 drm_atomic_get_old_connector_state(conn_state->state, connector); 1620 struct vc4_hdmi_connector_state *old_vc4_state = 1621 conn_state_to_vc4_hdmi_conn_state(old_conn_state); 1622 struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state); 1623 struct drm_display_mode *mode = &crtc_state->adjusted_mode; 1624 unsigned long long tmds_char_rate = mode->clock * 1000; 1625 unsigned long long tmds_bit_rate; 1626 int ret; 1627 1628 if (vc4_hdmi->variant->unsupported_odd_h_timings) { 1629 if (mode->flags & DRM_MODE_FLAG_DBLCLK) { 1630 /* Only try to fixup DBLCLK modes to get 480i and 576i 1631 * working. 1632 * A generic solution for all modes with odd horizontal 1633 * timing values seems impossible based on trying to 1634 * solve it for 1366x768 monitors. 1635 */ 1636 if ((mode->hsync_start - mode->hdisplay) & 1) 1637 mode->hsync_start--; 1638 if ((mode->hsync_end - mode->hsync_start) & 1) 1639 mode->hsync_end--; 1640 } 1641 1642 /* Now check whether we still have odd values remaining */ 1643 if ((mode->hdisplay % 2) || (mode->hsync_start % 2) || 1644 (mode->hsync_end % 2) || (mode->htotal % 2)) 1645 return -EINVAL; 1646 } 1647 1648 /* 1649 * The 1440p@60 pixel rate is in the same range than the first 1650 * WiFi channel (between 2.4GHz and 2.422GHz with 22MHz 1651 * bandwidth). Slightly lower the frequency to bring it out of 1652 * the WiFi range. 1653 */ 1654 tmds_bit_rate = tmds_char_rate * 10; 1655 if (vc4_hdmi->disable_wifi_frequencies && 1656 (tmds_bit_rate >= WIFI_2_4GHz_CH1_MIN_FREQ && 1657 tmds_bit_rate <= WIFI_2_4GHz_CH1_MAX_FREQ)) { 1658 mode->clock = 238560; 1659 tmds_char_rate = mode->clock * 1000; 1660 } 1661 1662 ret = vc4_hdmi_encoder_compute_config(vc4_hdmi, vc4_state, mode); 1663 if (ret) 1664 return ret; 1665 1666 /* vc4_hdmi_encoder_compute_config may have changed output_bpc and/or output_format */ 1667 if (vc4_state->output_bpc != old_vc4_state->output_bpc || 1668 vc4_state->output_format != old_vc4_state->output_format) 1669 crtc_state->mode_changed = true; 1670 1671 return 0; 1672 } 1673 1674 static enum drm_mode_status 1675 vc4_hdmi_encoder_mode_valid(struct drm_encoder *encoder, 1676 const struct drm_display_mode *mode) 1677 { 1678 struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); 1679 1680 if (vc4_hdmi->variant->unsupported_odd_h_timings && 1681 !(mode->flags & DRM_MODE_FLAG_DBLCLK) && 1682 ((mode->hdisplay % 2) || (mode->hsync_start % 2) || 1683 (mode->hsync_end % 2) || (mode->htotal % 2))) 1684 return MODE_H_ILLEGAL; 1685 1686 return vc4_hdmi_encoder_clock_valid(vc4_hdmi, mode->clock * 1000); 1687 } 1688 1689 static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = { 1690 .atomic_check = vc4_hdmi_encoder_atomic_check, 1691 .atomic_mode_set = vc4_hdmi_encoder_atomic_mode_set, 1692 .mode_valid = vc4_hdmi_encoder_mode_valid, 1693 }; 1694 1695 static u32 vc4_hdmi_channel_map(struct vc4_hdmi *vc4_hdmi, u32 channel_mask) 1696 { 1697 int i; 1698 u32 channel_map = 0; 1699 1700 for (i = 0; i < 8; i++) { 1701 if (channel_mask & BIT(i)) 1702 channel_map |= i << (3 * i); 1703 } 1704 return channel_map; 1705 } 1706 1707 static u32 vc5_hdmi_channel_map(struct vc4_hdmi *vc4_hdmi, u32 channel_mask) 1708 { 1709 int i; 1710 u32 channel_map = 0; 1711 1712 for (i = 0; i < 8; i++) { 1713 if (channel_mask & BIT(i)) 1714 channel_map |= i << (4 * i); 1715 } 1716 return channel_map; 1717 } 1718 1719 static bool vc5_hdmi_hp_detect(struct vc4_hdmi *vc4_hdmi) 1720 { 1721 unsigned long flags; 1722 u32 hotplug; 1723 1724 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1725 hotplug = HDMI_READ(HDMI_HOTPLUG); 1726 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1727 1728 return !!(hotplug & VC4_HDMI_HOTPLUG_CONNECTED); 1729 } 1730 1731 /* HDMI audio codec callbacks */ 1732 static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi, 1733 unsigned int samplerate) 1734 { 1735 u32 hsm_clock = clk_get_rate(vc4_hdmi->audio_clock); 1736 unsigned long flags; 1737 unsigned long n, m; 1738 1739 rational_best_approximation(hsm_clock, samplerate, 1740 VC4_HD_MAI_SMP_N_MASK >> 1741 VC4_HD_MAI_SMP_N_SHIFT, 1742 (VC4_HD_MAI_SMP_M_MASK >> 1743 VC4_HD_MAI_SMP_M_SHIFT) + 1, 1744 &n, &m); 1745 1746 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1747 HDMI_WRITE(HDMI_MAI_SMP, 1748 VC4_SET_FIELD(n, VC4_HD_MAI_SMP_N) | 1749 VC4_SET_FIELD(m - 1, VC4_HD_MAI_SMP_M)); 1750 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1751 } 1752 1753 static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi, unsigned int samplerate) 1754 { 1755 const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode; 1756 u32 n, cts; 1757 u64 tmp; 1758 1759 lockdep_assert_held(&vc4_hdmi->mutex); 1760 lockdep_assert_held(&vc4_hdmi->hw_lock); 1761 1762 n = 128 * samplerate / 1000; 1763 tmp = (u64)(mode->clock * 1000) * n; 1764 do_div(tmp, 128 * samplerate); 1765 cts = tmp; 1766 1767 HDMI_WRITE(HDMI_CRP_CFG, 1768 VC4_HDMI_CRP_CFG_EXTERNAL_CTS_EN | 1769 VC4_SET_FIELD(n, VC4_HDMI_CRP_CFG_N)); 1770 1771 /* 1772 * We could get slightly more accurate clocks in some cases by 1773 * providing a CTS_1 value. The two CTS values are alternated 1774 * between based on the period fields 1775 */ 1776 HDMI_WRITE(HDMI_CTS_0, cts); 1777 HDMI_WRITE(HDMI_CTS_1, cts); 1778 } 1779 1780 static inline struct vc4_hdmi *dai_to_hdmi(struct snd_soc_dai *dai) 1781 { 1782 struct snd_soc_card *card = snd_soc_dai_get_drvdata(dai); 1783 1784 return snd_soc_card_get_drvdata(card); 1785 } 1786 1787 static bool vc4_hdmi_audio_can_stream(struct vc4_hdmi *vc4_hdmi) 1788 { 1789 struct drm_display_info *display = &vc4_hdmi->connector.display_info; 1790 1791 lockdep_assert_held(&vc4_hdmi->mutex); 1792 1793 /* 1794 * If the encoder is currently in DVI mode, treat the codec DAI 1795 * as missing. 1796 */ 1797 if (!display->is_hdmi) 1798 return false; 1799 1800 return true; 1801 } 1802 1803 static int vc4_hdmi_audio_startup(struct device *dev, void *data) 1804 { 1805 struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); 1806 unsigned long flags; 1807 1808 mutex_lock(&vc4_hdmi->mutex); 1809 1810 if (!vc4_hdmi_audio_can_stream(vc4_hdmi)) { 1811 mutex_unlock(&vc4_hdmi->mutex); 1812 return -ENODEV; 1813 } 1814 1815 vc4_hdmi->audio.streaming = true; 1816 1817 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1818 HDMI_WRITE(HDMI_MAI_CTL, 1819 VC4_HD_MAI_CTL_RESET | 1820 VC4_HD_MAI_CTL_FLUSH | 1821 VC4_HD_MAI_CTL_DLATE | 1822 VC4_HD_MAI_CTL_ERRORE | 1823 VC4_HD_MAI_CTL_ERRORF); 1824 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1825 1826 if (vc4_hdmi->variant->phy_rng_enable) 1827 vc4_hdmi->variant->phy_rng_enable(vc4_hdmi); 1828 1829 mutex_unlock(&vc4_hdmi->mutex); 1830 1831 return 0; 1832 } 1833 1834 static void vc4_hdmi_audio_reset(struct vc4_hdmi *vc4_hdmi) 1835 { 1836 struct drm_encoder *encoder = &vc4_hdmi->encoder.base; 1837 struct device *dev = &vc4_hdmi->pdev->dev; 1838 unsigned long flags; 1839 int ret; 1840 1841 lockdep_assert_held(&vc4_hdmi->mutex); 1842 1843 vc4_hdmi->audio.streaming = false; 1844 ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO, false); 1845 if (ret) 1846 dev_err(dev, "Failed to stop audio infoframe: %d\n", ret); 1847 1848 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1849 1850 HDMI_WRITE(HDMI_MAI_CTL, VC4_HD_MAI_CTL_RESET); 1851 HDMI_WRITE(HDMI_MAI_CTL, VC4_HD_MAI_CTL_ERRORF); 1852 HDMI_WRITE(HDMI_MAI_CTL, VC4_HD_MAI_CTL_FLUSH); 1853 1854 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1855 } 1856 1857 static void vc4_hdmi_audio_shutdown(struct device *dev, void *data) 1858 { 1859 struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); 1860 unsigned long flags; 1861 1862 mutex_lock(&vc4_hdmi->mutex); 1863 1864 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1865 1866 HDMI_WRITE(HDMI_MAI_CTL, 1867 VC4_HD_MAI_CTL_DLATE | 1868 VC4_HD_MAI_CTL_ERRORE | 1869 VC4_HD_MAI_CTL_ERRORF); 1870 1871 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1872 1873 if (vc4_hdmi->variant->phy_rng_disable) 1874 vc4_hdmi->variant->phy_rng_disable(vc4_hdmi); 1875 1876 vc4_hdmi->audio.streaming = false; 1877 vc4_hdmi_audio_reset(vc4_hdmi); 1878 1879 mutex_unlock(&vc4_hdmi->mutex); 1880 } 1881 1882 static int sample_rate_to_mai_fmt(int samplerate) 1883 { 1884 switch (samplerate) { 1885 case 8000: 1886 return VC4_HDMI_MAI_SAMPLE_RATE_8000; 1887 case 11025: 1888 return VC4_HDMI_MAI_SAMPLE_RATE_11025; 1889 case 12000: 1890 return VC4_HDMI_MAI_SAMPLE_RATE_12000; 1891 case 16000: 1892 return VC4_HDMI_MAI_SAMPLE_RATE_16000; 1893 case 22050: 1894 return VC4_HDMI_MAI_SAMPLE_RATE_22050; 1895 case 24000: 1896 return VC4_HDMI_MAI_SAMPLE_RATE_24000; 1897 case 32000: 1898 return VC4_HDMI_MAI_SAMPLE_RATE_32000; 1899 case 44100: 1900 return VC4_HDMI_MAI_SAMPLE_RATE_44100; 1901 case 48000: 1902 return VC4_HDMI_MAI_SAMPLE_RATE_48000; 1903 case 64000: 1904 return VC4_HDMI_MAI_SAMPLE_RATE_64000; 1905 case 88200: 1906 return VC4_HDMI_MAI_SAMPLE_RATE_88200; 1907 case 96000: 1908 return VC4_HDMI_MAI_SAMPLE_RATE_96000; 1909 case 128000: 1910 return VC4_HDMI_MAI_SAMPLE_RATE_128000; 1911 case 176400: 1912 return VC4_HDMI_MAI_SAMPLE_RATE_176400; 1913 case 192000: 1914 return VC4_HDMI_MAI_SAMPLE_RATE_192000; 1915 default: 1916 return VC4_HDMI_MAI_SAMPLE_RATE_NOT_INDICATED; 1917 } 1918 } 1919 1920 /* HDMI audio codec callbacks */ 1921 static int vc4_hdmi_audio_prepare(struct device *dev, void *data, 1922 struct hdmi_codec_daifmt *daifmt, 1923 struct hdmi_codec_params *params) 1924 { 1925 struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); 1926 struct drm_encoder *encoder = &vc4_hdmi->encoder.base; 1927 unsigned int sample_rate = params->sample_rate; 1928 unsigned int channels = params->channels; 1929 unsigned long flags; 1930 u32 audio_packet_config, channel_mask; 1931 u32 channel_map; 1932 u32 mai_audio_format; 1933 u32 mai_sample_rate; 1934 1935 dev_dbg(dev, "%s: %u Hz, %d bit, %d channels\n", __func__, 1936 sample_rate, params->sample_width, channels); 1937 1938 mutex_lock(&vc4_hdmi->mutex); 1939 1940 if (!vc4_hdmi_audio_can_stream(vc4_hdmi)) { 1941 mutex_unlock(&vc4_hdmi->mutex); 1942 return -EINVAL; 1943 } 1944 1945 vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate); 1946 1947 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 1948 HDMI_WRITE(HDMI_MAI_CTL, 1949 VC4_SET_FIELD(channels, VC4_HD_MAI_CTL_CHNUM) | 1950 VC4_HD_MAI_CTL_WHOLSMP | 1951 VC4_HD_MAI_CTL_CHALIGN | 1952 VC4_HD_MAI_CTL_ENABLE); 1953 1954 mai_sample_rate = sample_rate_to_mai_fmt(sample_rate); 1955 if (params->iec.status[0] & IEC958_AES0_NONAUDIO && 1956 params->channels == 8) 1957 mai_audio_format = VC4_HDMI_MAI_FORMAT_HBR; 1958 else 1959 mai_audio_format = VC4_HDMI_MAI_FORMAT_PCM; 1960 HDMI_WRITE(HDMI_MAI_FMT, 1961 VC4_SET_FIELD(mai_sample_rate, 1962 VC4_HDMI_MAI_FORMAT_SAMPLE_RATE) | 1963 VC4_SET_FIELD(mai_audio_format, 1964 VC4_HDMI_MAI_FORMAT_AUDIO_FORMAT)); 1965 1966 /* The B frame identifier should match the value used by alsa-lib (8) */ 1967 audio_packet_config = 1968 VC4_HDMI_AUDIO_PACKET_ZERO_DATA_ON_SAMPLE_FLAT | 1969 VC4_HDMI_AUDIO_PACKET_ZERO_DATA_ON_INACTIVE_CHANNELS | 1970 VC4_SET_FIELD(0x8, VC4_HDMI_AUDIO_PACKET_B_FRAME_IDENTIFIER); 1971 1972 channel_mask = GENMASK(channels - 1, 0); 1973 audio_packet_config |= VC4_SET_FIELD(channel_mask, 1974 VC4_HDMI_AUDIO_PACKET_CEA_MASK); 1975 1976 /* Set the MAI threshold */ 1977 HDMI_WRITE(HDMI_MAI_THR, 1978 VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_PANICHIGH) | 1979 VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_PANICLOW) | 1980 VC4_SET_FIELD(0x06, VC4_HD_MAI_THR_DREQHIGH) | 1981 VC4_SET_FIELD(0x08, VC4_HD_MAI_THR_DREQLOW)); 1982 1983 HDMI_WRITE(HDMI_MAI_CONFIG, 1984 VC4_HDMI_MAI_CONFIG_BIT_REVERSE | 1985 VC4_HDMI_MAI_CONFIG_FORMAT_REVERSE | 1986 VC4_SET_FIELD(channel_mask, VC4_HDMI_MAI_CHANNEL_MASK)); 1987 1988 channel_map = vc4_hdmi->variant->channel_map(vc4_hdmi, channel_mask); 1989 HDMI_WRITE(HDMI_MAI_CHANNEL_MAP, channel_map); 1990 HDMI_WRITE(HDMI_AUDIO_PACKET_CONFIG, audio_packet_config); 1991 1992 vc4_hdmi_set_n_cts(vc4_hdmi, sample_rate); 1993 1994 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 1995 1996 memcpy(&vc4_hdmi->audio.infoframe, ¶ms->cea, sizeof(params->cea)); 1997 vc4_hdmi_set_audio_infoframe(encoder); 1998 1999 mutex_unlock(&vc4_hdmi->mutex); 2000 2001 return 0; 2002 } 2003 2004 static const struct snd_soc_component_driver vc4_hdmi_audio_cpu_dai_comp = { 2005 .name = "vc4-hdmi-cpu-dai-component", 2006 .legacy_dai_naming = 1, 2007 }; 2008 2009 static int vc4_hdmi_audio_cpu_dai_probe(struct snd_soc_dai *dai) 2010 { 2011 struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai); 2012 2013 snd_soc_dai_init_dma_data(dai, &vc4_hdmi->audio.dma_data, NULL); 2014 2015 return 0; 2016 } 2017 2018 static struct snd_soc_dai_driver vc4_hdmi_audio_cpu_dai_drv = { 2019 .name = "vc4-hdmi-cpu-dai", 2020 .probe = vc4_hdmi_audio_cpu_dai_probe, 2021 .playback = { 2022 .stream_name = "Playback", 2023 .channels_min = 1, 2024 .channels_max = 8, 2025 .rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | 2026 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | 2027 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | 2028 SNDRV_PCM_RATE_192000, 2029 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE, 2030 }, 2031 }; 2032 2033 static const struct snd_dmaengine_pcm_config pcm_conf = { 2034 .chan_names[SNDRV_PCM_STREAM_PLAYBACK] = "audio-rx", 2035 .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, 2036 }; 2037 2038 static int vc4_hdmi_audio_get_eld(struct device *dev, void *data, 2039 uint8_t *buf, size_t len) 2040 { 2041 struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); 2042 struct drm_connector *connector = &vc4_hdmi->connector; 2043 2044 mutex_lock(&vc4_hdmi->mutex); 2045 memcpy(buf, connector->eld, min(sizeof(connector->eld), len)); 2046 mutex_unlock(&vc4_hdmi->mutex); 2047 2048 return 0; 2049 } 2050 2051 static const struct hdmi_codec_ops vc4_hdmi_codec_ops = { 2052 .get_eld = vc4_hdmi_audio_get_eld, 2053 .prepare = vc4_hdmi_audio_prepare, 2054 .audio_shutdown = vc4_hdmi_audio_shutdown, 2055 .audio_startup = vc4_hdmi_audio_startup, 2056 }; 2057 2058 static struct hdmi_codec_pdata vc4_hdmi_codec_pdata = { 2059 .ops = &vc4_hdmi_codec_ops, 2060 .max_i2s_channels = 8, 2061 .i2s = 1, 2062 }; 2063 2064 static int vc4_hdmi_audio_init(struct vc4_hdmi *vc4_hdmi) 2065 { 2066 const struct vc4_hdmi_register *mai_data = 2067 &vc4_hdmi->variant->registers[HDMI_MAI_DATA]; 2068 struct snd_soc_dai_link *dai_link = &vc4_hdmi->audio.link; 2069 struct snd_soc_card *card = &vc4_hdmi->audio.card; 2070 struct device *dev = &vc4_hdmi->pdev->dev; 2071 struct platform_device *codec_pdev; 2072 const __be32 *addr; 2073 int index, len; 2074 int ret; 2075 2076 if (!of_find_property(dev->of_node, "dmas", &len) || !len) { 2077 dev_warn(dev, 2078 "'dmas' DT property is missing or empty, no HDMI audio\n"); 2079 return 0; 2080 } 2081 2082 if (mai_data->reg != VC4_HD) { 2083 WARN_ONCE(true, "MAI isn't in the HD block\n"); 2084 return -EINVAL; 2085 } 2086 2087 /* 2088 * Get the physical address of VC4_HD_MAI_DATA. We need to retrieve 2089 * the bus address specified in the DT, because the physical address 2090 * (the one returned by platform_get_resource()) is not appropriate 2091 * for DMA transfers. 2092 * This VC/MMU should probably be exposed to avoid this kind of hacks. 2093 */ 2094 index = of_property_match_string(dev->of_node, "reg-names", "hd"); 2095 /* Before BCM2711, we don't have a named register range */ 2096 if (index < 0) 2097 index = 1; 2098 2099 addr = of_get_address(dev->of_node, index, NULL, NULL); 2100 2101 vc4_hdmi->audio.dma_data.addr = be32_to_cpup(addr) + mai_data->offset; 2102 vc4_hdmi->audio.dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; 2103 vc4_hdmi->audio.dma_data.maxburst = 2; 2104 2105 ret = devm_snd_dmaengine_pcm_register(dev, &pcm_conf, 0); 2106 if (ret) { 2107 dev_err(dev, "Could not register PCM component: %d\n", ret); 2108 return ret; 2109 } 2110 2111 ret = devm_snd_soc_register_component(dev, &vc4_hdmi_audio_cpu_dai_comp, 2112 &vc4_hdmi_audio_cpu_dai_drv, 1); 2113 if (ret) { 2114 dev_err(dev, "Could not register CPU DAI: %d\n", ret); 2115 return ret; 2116 } 2117 2118 codec_pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, 2119 PLATFORM_DEVID_AUTO, 2120 &vc4_hdmi_codec_pdata, 2121 sizeof(vc4_hdmi_codec_pdata)); 2122 if (IS_ERR(codec_pdev)) { 2123 dev_err(dev, "Couldn't register the HDMI codec: %ld\n", PTR_ERR(codec_pdev)); 2124 return PTR_ERR(codec_pdev); 2125 } 2126 vc4_hdmi->audio.codec_pdev = codec_pdev; 2127 2128 dai_link->cpus = &vc4_hdmi->audio.cpu; 2129 dai_link->codecs = &vc4_hdmi->audio.codec; 2130 dai_link->platforms = &vc4_hdmi->audio.platform; 2131 2132 dai_link->num_cpus = 1; 2133 dai_link->num_codecs = 1; 2134 dai_link->num_platforms = 1; 2135 2136 dai_link->name = "MAI"; 2137 dai_link->stream_name = "MAI PCM"; 2138 dai_link->codecs->dai_name = "i2s-hifi"; 2139 dai_link->cpus->dai_name = dev_name(dev); 2140 dai_link->codecs->name = dev_name(&codec_pdev->dev); 2141 dai_link->platforms->name = dev_name(dev); 2142 2143 card->dai_link = dai_link; 2144 card->num_links = 1; 2145 card->name = vc4_hdmi->variant->card_name; 2146 card->driver_name = "vc4-hdmi"; 2147 card->dev = dev; 2148 card->owner = THIS_MODULE; 2149 2150 /* 2151 * Be careful, snd_soc_register_card() calls dev_set_drvdata() and 2152 * stores a pointer to the snd card object in dev->driver_data. This 2153 * means we cannot use it for something else. The hdmi back-pointer is 2154 * now stored in card->drvdata and should be retrieved with 2155 * snd_soc_card_get_drvdata() if needed. 2156 */ 2157 snd_soc_card_set_drvdata(card, vc4_hdmi); 2158 ret = devm_snd_soc_register_card(dev, card); 2159 if (ret) 2160 dev_err_probe(dev, ret, "Could not register sound card\n"); 2161 2162 return ret; 2163 2164 } 2165 2166 static void vc4_hdmi_audio_exit(struct vc4_hdmi *vc4_hdmi) 2167 { 2168 platform_device_unregister(vc4_hdmi->audio.codec_pdev); 2169 vc4_hdmi->audio.codec_pdev = NULL; 2170 } 2171 2172 static irqreturn_t vc4_hdmi_hpd_irq_thread(int irq, void *priv) 2173 { 2174 struct vc4_hdmi *vc4_hdmi = priv; 2175 struct drm_connector *connector = &vc4_hdmi->connector; 2176 struct drm_device *dev = connector->dev; 2177 2178 if (dev && dev->registered) 2179 drm_connector_helper_hpd_irq_event(connector); 2180 2181 return IRQ_HANDLED; 2182 } 2183 2184 static int vc4_hdmi_hotplug_init(struct vc4_hdmi *vc4_hdmi) 2185 { 2186 struct drm_connector *connector = &vc4_hdmi->connector; 2187 struct platform_device *pdev = vc4_hdmi->pdev; 2188 int ret; 2189 2190 if (vc4_hdmi->variant->external_irq_controller) { 2191 unsigned int hpd_con = platform_get_irq_byname(pdev, "hpd-connected"); 2192 unsigned int hpd_rm = platform_get_irq_byname(pdev, "hpd-removed"); 2193 2194 ret = request_threaded_irq(hpd_con, 2195 NULL, 2196 vc4_hdmi_hpd_irq_thread, IRQF_ONESHOT, 2197 "vc4 hdmi hpd connected", vc4_hdmi); 2198 if (ret) 2199 return ret; 2200 2201 ret = request_threaded_irq(hpd_rm, 2202 NULL, 2203 vc4_hdmi_hpd_irq_thread, IRQF_ONESHOT, 2204 "vc4 hdmi hpd disconnected", vc4_hdmi); 2205 if (ret) { 2206 free_irq(hpd_con, vc4_hdmi); 2207 return ret; 2208 } 2209 2210 connector->polled = DRM_CONNECTOR_POLL_HPD; 2211 } 2212 2213 return 0; 2214 } 2215 2216 static void vc4_hdmi_hotplug_exit(struct vc4_hdmi *vc4_hdmi) 2217 { 2218 struct platform_device *pdev = vc4_hdmi->pdev; 2219 2220 if (vc4_hdmi->variant->external_irq_controller) { 2221 free_irq(platform_get_irq_byname(pdev, "hpd-connected"), vc4_hdmi); 2222 free_irq(platform_get_irq_byname(pdev, "hpd-removed"), vc4_hdmi); 2223 } 2224 } 2225 2226 #ifdef CONFIG_DRM_VC4_HDMI_CEC 2227 static irqreturn_t vc4_cec_irq_handler_rx_thread(int irq, void *priv) 2228 { 2229 struct vc4_hdmi *vc4_hdmi = priv; 2230 2231 if (vc4_hdmi->cec_rx_msg.len) 2232 cec_received_msg(vc4_hdmi->cec_adap, 2233 &vc4_hdmi->cec_rx_msg); 2234 2235 return IRQ_HANDLED; 2236 } 2237 2238 static irqreturn_t vc4_cec_irq_handler_tx_thread(int irq, void *priv) 2239 { 2240 struct vc4_hdmi *vc4_hdmi = priv; 2241 2242 if (vc4_hdmi->cec_tx_ok) { 2243 cec_transmit_done(vc4_hdmi->cec_adap, CEC_TX_STATUS_OK, 2244 0, 0, 0, 0); 2245 } else { 2246 /* 2247 * This CEC implementation makes 1 retry, so if we 2248 * get a NACK, then that means it made 2 attempts. 2249 */ 2250 cec_transmit_done(vc4_hdmi->cec_adap, CEC_TX_STATUS_NACK, 2251 0, 2, 0, 0); 2252 } 2253 return IRQ_HANDLED; 2254 } 2255 2256 static irqreturn_t vc4_cec_irq_handler_thread(int irq, void *priv) 2257 { 2258 struct vc4_hdmi *vc4_hdmi = priv; 2259 irqreturn_t ret; 2260 2261 if (vc4_hdmi->cec_irq_was_rx) 2262 ret = vc4_cec_irq_handler_rx_thread(irq, priv); 2263 else 2264 ret = vc4_cec_irq_handler_tx_thread(irq, priv); 2265 2266 return ret; 2267 } 2268 2269 static void vc4_cec_read_msg(struct vc4_hdmi *vc4_hdmi, u32 cntrl1) 2270 { 2271 struct drm_device *dev = vc4_hdmi->connector.dev; 2272 struct cec_msg *msg = &vc4_hdmi->cec_rx_msg; 2273 unsigned int i; 2274 2275 lockdep_assert_held(&vc4_hdmi->hw_lock); 2276 2277 msg->len = 1 + ((cntrl1 & VC4_HDMI_CEC_REC_WRD_CNT_MASK) >> 2278 VC4_HDMI_CEC_REC_WRD_CNT_SHIFT); 2279 2280 if (msg->len > 16) { 2281 drm_err(dev, "Attempting to read too much data (%d)\n", msg->len); 2282 return; 2283 } 2284 2285 for (i = 0; i < msg->len; i += 4) { 2286 u32 val = HDMI_READ(HDMI_CEC_RX_DATA_1 + (i >> 2)); 2287 2288 msg->msg[i] = val & 0xff; 2289 msg->msg[i + 1] = (val >> 8) & 0xff; 2290 msg->msg[i + 2] = (val >> 16) & 0xff; 2291 msg->msg[i + 3] = (val >> 24) & 0xff; 2292 } 2293 } 2294 2295 static irqreturn_t vc4_cec_irq_handler_tx_bare_locked(struct vc4_hdmi *vc4_hdmi) 2296 { 2297 u32 cntrl1; 2298 2299 lockdep_assert_held(&vc4_hdmi->hw_lock); 2300 2301 cntrl1 = HDMI_READ(HDMI_CEC_CNTRL_1); 2302 vc4_hdmi->cec_tx_ok = cntrl1 & VC4_HDMI_CEC_TX_STATUS_GOOD; 2303 cntrl1 &= ~VC4_HDMI_CEC_START_XMIT_BEGIN; 2304 HDMI_WRITE(HDMI_CEC_CNTRL_1, cntrl1); 2305 2306 return IRQ_WAKE_THREAD; 2307 } 2308 2309 static irqreturn_t vc4_cec_irq_handler_tx_bare(int irq, void *priv) 2310 { 2311 struct vc4_hdmi *vc4_hdmi = priv; 2312 irqreturn_t ret; 2313 2314 spin_lock(&vc4_hdmi->hw_lock); 2315 ret = vc4_cec_irq_handler_tx_bare_locked(vc4_hdmi); 2316 spin_unlock(&vc4_hdmi->hw_lock); 2317 2318 return ret; 2319 } 2320 2321 static irqreturn_t vc4_cec_irq_handler_rx_bare_locked(struct vc4_hdmi *vc4_hdmi) 2322 { 2323 u32 cntrl1; 2324 2325 lockdep_assert_held(&vc4_hdmi->hw_lock); 2326 2327 vc4_hdmi->cec_rx_msg.len = 0; 2328 cntrl1 = HDMI_READ(HDMI_CEC_CNTRL_1); 2329 vc4_cec_read_msg(vc4_hdmi, cntrl1); 2330 cntrl1 |= VC4_HDMI_CEC_CLEAR_RECEIVE_OFF; 2331 HDMI_WRITE(HDMI_CEC_CNTRL_1, cntrl1); 2332 cntrl1 &= ~VC4_HDMI_CEC_CLEAR_RECEIVE_OFF; 2333 2334 HDMI_WRITE(HDMI_CEC_CNTRL_1, cntrl1); 2335 2336 return IRQ_WAKE_THREAD; 2337 } 2338 2339 static irqreturn_t vc4_cec_irq_handler_rx_bare(int irq, void *priv) 2340 { 2341 struct vc4_hdmi *vc4_hdmi = priv; 2342 irqreturn_t ret; 2343 2344 spin_lock(&vc4_hdmi->hw_lock); 2345 ret = vc4_cec_irq_handler_rx_bare_locked(vc4_hdmi); 2346 spin_unlock(&vc4_hdmi->hw_lock); 2347 2348 return ret; 2349 } 2350 2351 static irqreturn_t vc4_cec_irq_handler(int irq, void *priv) 2352 { 2353 struct vc4_hdmi *vc4_hdmi = priv; 2354 u32 stat = HDMI_READ(HDMI_CEC_CPU_STATUS); 2355 irqreturn_t ret; 2356 u32 cntrl5; 2357 2358 if (!(stat & VC4_HDMI_CPU_CEC)) 2359 return IRQ_NONE; 2360 2361 spin_lock(&vc4_hdmi->hw_lock); 2362 cntrl5 = HDMI_READ(HDMI_CEC_CNTRL_5); 2363 vc4_hdmi->cec_irq_was_rx = cntrl5 & VC4_HDMI_CEC_RX_CEC_INT; 2364 if (vc4_hdmi->cec_irq_was_rx) 2365 ret = vc4_cec_irq_handler_rx_bare_locked(vc4_hdmi); 2366 else 2367 ret = vc4_cec_irq_handler_tx_bare_locked(vc4_hdmi); 2368 2369 HDMI_WRITE(HDMI_CEC_CPU_CLEAR, VC4_HDMI_CPU_CEC); 2370 spin_unlock(&vc4_hdmi->hw_lock); 2371 2372 return ret; 2373 } 2374 2375 static int vc4_hdmi_cec_enable(struct cec_adapter *adap) 2376 { 2377 struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); 2378 /* clock period in microseconds */ 2379 const u32 usecs = 1000000 / CEC_CLOCK_FREQ; 2380 unsigned long flags; 2381 u32 val; 2382 int ret; 2383 2384 /* 2385 * NOTE: This function should really take vc4_hdmi->mutex, but doing so 2386 * results in a reentrancy since cec_s_phys_addr_from_edid() called in 2387 * .detect or .get_modes might call .adap_enable, which leads to this 2388 * function being called with that mutex held. 2389 * 2390 * Concurrency is not an issue for the moment since we don't share any 2391 * state with KMS, so we can ignore the lock for now, but we need to 2392 * keep it in mind if we were to change that assumption. 2393 */ 2394 2395 ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev); 2396 if (ret) 2397 return ret; 2398 2399 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 2400 2401 val = HDMI_READ(HDMI_CEC_CNTRL_5); 2402 val &= ~(VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET | 2403 VC4_HDMI_CEC_CNT_TO_4700_US_MASK | 2404 VC4_HDMI_CEC_CNT_TO_4500_US_MASK); 2405 val |= ((4700 / usecs) << VC4_HDMI_CEC_CNT_TO_4700_US_SHIFT) | 2406 ((4500 / usecs) << VC4_HDMI_CEC_CNT_TO_4500_US_SHIFT); 2407 2408 HDMI_WRITE(HDMI_CEC_CNTRL_5, val | 2409 VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET); 2410 HDMI_WRITE(HDMI_CEC_CNTRL_5, val); 2411 HDMI_WRITE(HDMI_CEC_CNTRL_2, 2412 ((1500 / usecs) << VC4_HDMI_CEC_CNT_TO_1500_US_SHIFT) | 2413 ((1300 / usecs) << VC4_HDMI_CEC_CNT_TO_1300_US_SHIFT) | 2414 ((800 / usecs) << VC4_HDMI_CEC_CNT_TO_800_US_SHIFT) | 2415 ((600 / usecs) << VC4_HDMI_CEC_CNT_TO_600_US_SHIFT) | 2416 ((400 / usecs) << VC4_HDMI_CEC_CNT_TO_400_US_SHIFT)); 2417 HDMI_WRITE(HDMI_CEC_CNTRL_3, 2418 ((2750 / usecs) << VC4_HDMI_CEC_CNT_TO_2750_US_SHIFT) | 2419 ((2400 / usecs) << VC4_HDMI_CEC_CNT_TO_2400_US_SHIFT) | 2420 ((2050 / usecs) << VC4_HDMI_CEC_CNT_TO_2050_US_SHIFT) | 2421 ((1700 / usecs) << VC4_HDMI_CEC_CNT_TO_1700_US_SHIFT)); 2422 HDMI_WRITE(HDMI_CEC_CNTRL_4, 2423 ((4300 / usecs) << VC4_HDMI_CEC_CNT_TO_4300_US_SHIFT) | 2424 ((3900 / usecs) << VC4_HDMI_CEC_CNT_TO_3900_US_SHIFT) | 2425 ((3600 / usecs) << VC4_HDMI_CEC_CNT_TO_3600_US_SHIFT) | 2426 ((3500 / usecs) << VC4_HDMI_CEC_CNT_TO_3500_US_SHIFT)); 2427 2428 if (!vc4_hdmi->variant->external_irq_controller) 2429 HDMI_WRITE(HDMI_CEC_CPU_MASK_CLEAR, VC4_HDMI_CPU_CEC); 2430 2431 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 2432 2433 return 0; 2434 } 2435 2436 static int vc4_hdmi_cec_disable(struct cec_adapter *adap) 2437 { 2438 struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); 2439 unsigned long flags; 2440 2441 /* 2442 * NOTE: This function should really take vc4_hdmi->mutex, but doing so 2443 * results in a reentrancy since cec_s_phys_addr_from_edid() called in 2444 * .detect or .get_modes might call .adap_enable, which leads to this 2445 * function being called with that mutex held. 2446 * 2447 * Concurrency is not an issue for the moment since we don't share any 2448 * state with KMS, so we can ignore the lock for now, but we need to 2449 * keep it in mind if we were to change that assumption. 2450 */ 2451 2452 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 2453 2454 if (!vc4_hdmi->variant->external_irq_controller) 2455 HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, VC4_HDMI_CPU_CEC); 2456 2457 HDMI_WRITE(HDMI_CEC_CNTRL_5, HDMI_READ(HDMI_CEC_CNTRL_5) | 2458 VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET); 2459 2460 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 2461 2462 pm_runtime_put(&vc4_hdmi->pdev->dev); 2463 2464 return 0; 2465 } 2466 2467 static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable) 2468 { 2469 if (enable) 2470 return vc4_hdmi_cec_enable(adap); 2471 else 2472 return vc4_hdmi_cec_disable(adap); 2473 } 2474 2475 static int vc4_hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr) 2476 { 2477 struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); 2478 unsigned long flags; 2479 2480 /* 2481 * NOTE: This function should really take vc4_hdmi->mutex, but doing so 2482 * results in a reentrancy since cec_s_phys_addr_from_edid() called in 2483 * .detect or .get_modes might call .adap_enable, which leads to this 2484 * function being called with that mutex held. 2485 * 2486 * Concurrency is not an issue for the moment since we don't share any 2487 * state with KMS, so we can ignore the lock for now, but we need to 2488 * keep it in mind if we were to change that assumption. 2489 */ 2490 2491 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 2492 HDMI_WRITE(HDMI_CEC_CNTRL_1, 2493 (HDMI_READ(HDMI_CEC_CNTRL_1) & ~VC4_HDMI_CEC_ADDR_MASK) | 2494 (log_addr & 0xf) << VC4_HDMI_CEC_ADDR_SHIFT); 2495 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 2496 2497 return 0; 2498 } 2499 2500 static int vc4_hdmi_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, 2501 u32 signal_free_time, struct cec_msg *msg) 2502 { 2503 struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap); 2504 struct drm_device *dev = vc4_hdmi->connector.dev; 2505 unsigned long flags; 2506 u32 val; 2507 unsigned int i; 2508 2509 /* 2510 * NOTE: This function should really take vc4_hdmi->mutex, but doing so 2511 * results in a reentrancy since cec_s_phys_addr_from_edid() called in 2512 * .detect or .get_modes might call .adap_enable, which leads to this 2513 * function being called with that mutex held. 2514 * 2515 * Concurrency is not an issue for the moment since we don't share any 2516 * state with KMS, so we can ignore the lock for now, but we need to 2517 * keep it in mind if we were to change that assumption. 2518 */ 2519 2520 if (msg->len > 16) { 2521 drm_err(dev, "Attempting to transmit too much data (%d)\n", msg->len); 2522 return -ENOMEM; 2523 } 2524 2525 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 2526 2527 for (i = 0; i < msg->len; i += 4) 2528 HDMI_WRITE(HDMI_CEC_TX_DATA_1 + (i >> 2), 2529 (msg->msg[i]) | 2530 (msg->msg[i + 1] << 8) | 2531 (msg->msg[i + 2] << 16) | 2532 (msg->msg[i + 3] << 24)); 2533 2534 val = HDMI_READ(HDMI_CEC_CNTRL_1); 2535 val &= ~VC4_HDMI_CEC_START_XMIT_BEGIN; 2536 HDMI_WRITE(HDMI_CEC_CNTRL_1, val); 2537 val &= ~VC4_HDMI_CEC_MESSAGE_LENGTH_MASK; 2538 val |= (msg->len - 1) << VC4_HDMI_CEC_MESSAGE_LENGTH_SHIFT; 2539 val |= VC4_HDMI_CEC_START_XMIT_BEGIN; 2540 2541 HDMI_WRITE(HDMI_CEC_CNTRL_1, val); 2542 2543 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 2544 2545 return 0; 2546 } 2547 2548 static const struct cec_adap_ops vc4_hdmi_cec_adap_ops = { 2549 .adap_enable = vc4_hdmi_cec_adap_enable, 2550 .adap_log_addr = vc4_hdmi_cec_adap_log_addr, 2551 .adap_transmit = vc4_hdmi_cec_adap_transmit, 2552 }; 2553 2554 static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi) 2555 { 2556 struct cec_connector_info conn_info; 2557 struct platform_device *pdev = vc4_hdmi->pdev; 2558 struct device *dev = &pdev->dev; 2559 int ret; 2560 2561 if (!of_find_property(dev->of_node, "interrupts", NULL)) { 2562 dev_warn(dev, "'interrupts' DT property is missing, no CEC\n"); 2563 return 0; 2564 } 2565 2566 vc4_hdmi->cec_adap = cec_allocate_adapter(&vc4_hdmi_cec_adap_ops, 2567 vc4_hdmi, "vc4", 2568 CEC_CAP_DEFAULTS | 2569 CEC_CAP_CONNECTOR_INFO, 1); 2570 ret = PTR_ERR_OR_ZERO(vc4_hdmi->cec_adap); 2571 if (ret < 0) 2572 return ret; 2573 2574 cec_fill_conn_info_from_drm(&conn_info, &vc4_hdmi->connector); 2575 cec_s_conn_info(vc4_hdmi->cec_adap, &conn_info); 2576 2577 if (vc4_hdmi->variant->external_irq_controller) { 2578 ret = request_threaded_irq(platform_get_irq_byname(pdev, "cec-rx"), 2579 vc4_cec_irq_handler_rx_bare, 2580 vc4_cec_irq_handler_rx_thread, 0, 2581 "vc4 hdmi cec rx", vc4_hdmi); 2582 if (ret) 2583 goto err_delete_cec_adap; 2584 2585 ret = request_threaded_irq(platform_get_irq_byname(pdev, "cec-tx"), 2586 vc4_cec_irq_handler_tx_bare, 2587 vc4_cec_irq_handler_tx_thread, 0, 2588 "vc4 hdmi cec tx", vc4_hdmi); 2589 if (ret) 2590 goto err_remove_cec_rx_handler; 2591 } else { 2592 ret = request_threaded_irq(platform_get_irq(pdev, 0), 2593 vc4_cec_irq_handler, 2594 vc4_cec_irq_handler_thread, 0, 2595 "vc4 hdmi cec", vc4_hdmi); 2596 if (ret) 2597 goto err_delete_cec_adap; 2598 } 2599 2600 ret = cec_register_adapter(vc4_hdmi->cec_adap, &pdev->dev); 2601 if (ret < 0) 2602 goto err_remove_handlers; 2603 2604 return 0; 2605 2606 err_remove_handlers: 2607 if (vc4_hdmi->variant->external_irq_controller) 2608 free_irq(platform_get_irq_byname(pdev, "cec-tx"), vc4_hdmi); 2609 else 2610 free_irq(platform_get_irq(pdev, 0), vc4_hdmi); 2611 2612 err_remove_cec_rx_handler: 2613 if (vc4_hdmi->variant->external_irq_controller) 2614 free_irq(platform_get_irq_byname(pdev, "cec-rx"), vc4_hdmi); 2615 2616 err_delete_cec_adap: 2617 cec_delete_adapter(vc4_hdmi->cec_adap); 2618 2619 return ret; 2620 } 2621 2622 static void vc4_hdmi_cec_exit(struct vc4_hdmi *vc4_hdmi) 2623 { 2624 struct platform_device *pdev = vc4_hdmi->pdev; 2625 2626 if (vc4_hdmi->variant->external_irq_controller) { 2627 free_irq(platform_get_irq_byname(pdev, "cec-rx"), vc4_hdmi); 2628 free_irq(platform_get_irq_byname(pdev, "cec-tx"), vc4_hdmi); 2629 } else { 2630 free_irq(platform_get_irq(pdev, 0), vc4_hdmi); 2631 } 2632 2633 cec_unregister_adapter(vc4_hdmi->cec_adap); 2634 } 2635 #else 2636 static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi) 2637 { 2638 return 0; 2639 } 2640 2641 static void vc4_hdmi_cec_exit(struct vc4_hdmi *vc4_hdmi) {}; 2642 #endif 2643 2644 static int vc4_hdmi_build_regset(struct vc4_hdmi *vc4_hdmi, 2645 struct debugfs_regset32 *regset, 2646 enum vc4_hdmi_regs reg) 2647 { 2648 const struct vc4_hdmi_variant *variant = vc4_hdmi->variant; 2649 struct debugfs_reg32 *regs, *new_regs; 2650 unsigned int count = 0; 2651 unsigned int i; 2652 2653 regs = kcalloc(variant->num_registers, sizeof(*regs), 2654 GFP_KERNEL); 2655 if (!regs) 2656 return -ENOMEM; 2657 2658 for (i = 0; i < variant->num_registers; i++) { 2659 const struct vc4_hdmi_register *field = &variant->registers[i]; 2660 2661 if (field->reg != reg) 2662 continue; 2663 2664 regs[count].name = field->name; 2665 regs[count].offset = field->offset; 2666 count++; 2667 } 2668 2669 new_regs = krealloc(regs, count * sizeof(*regs), GFP_KERNEL); 2670 if (!new_regs) 2671 return -ENOMEM; 2672 2673 regset->base = __vc4_hdmi_get_field_base(vc4_hdmi, reg); 2674 regset->regs = new_regs; 2675 regset->nregs = count; 2676 2677 return 0; 2678 } 2679 2680 static int vc4_hdmi_init_resources(struct vc4_hdmi *vc4_hdmi) 2681 { 2682 struct platform_device *pdev = vc4_hdmi->pdev; 2683 struct device *dev = &pdev->dev; 2684 int ret; 2685 2686 vc4_hdmi->hdmicore_regs = vc4_ioremap_regs(pdev, 0); 2687 if (IS_ERR(vc4_hdmi->hdmicore_regs)) 2688 return PTR_ERR(vc4_hdmi->hdmicore_regs); 2689 2690 vc4_hdmi->hd_regs = vc4_ioremap_regs(pdev, 1); 2691 if (IS_ERR(vc4_hdmi->hd_regs)) 2692 return PTR_ERR(vc4_hdmi->hd_regs); 2693 2694 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->hd_regset, VC4_HD); 2695 if (ret) 2696 return ret; 2697 2698 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->hdmi_regset, VC4_HDMI); 2699 if (ret) 2700 return ret; 2701 2702 vc4_hdmi->pixel_clock = devm_clk_get(dev, "pixel"); 2703 if (IS_ERR(vc4_hdmi->pixel_clock)) { 2704 ret = PTR_ERR(vc4_hdmi->pixel_clock); 2705 if (ret != -EPROBE_DEFER) 2706 DRM_ERROR("Failed to get pixel clock\n"); 2707 return ret; 2708 } 2709 2710 vc4_hdmi->hsm_clock = devm_clk_get(dev, "hdmi"); 2711 if (IS_ERR(vc4_hdmi->hsm_clock)) { 2712 DRM_ERROR("Failed to get HDMI state machine clock\n"); 2713 return PTR_ERR(vc4_hdmi->hsm_clock); 2714 } 2715 vc4_hdmi->audio_clock = vc4_hdmi->hsm_clock; 2716 vc4_hdmi->cec_clock = vc4_hdmi->hsm_clock; 2717 2718 return 0; 2719 } 2720 2721 static int vc5_hdmi_init_resources(struct vc4_hdmi *vc4_hdmi) 2722 { 2723 struct platform_device *pdev = vc4_hdmi->pdev; 2724 struct device *dev = &pdev->dev; 2725 struct resource *res; 2726 int ret; 2727 2728 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hdmi"); 2729 if (!res) 2730 return -ENODEV; 2731 2732 vc4_hdmi->hdmicore_regs = devm_ioremap(dev, res->start, 2733 resource_size(res)); 2734 if (!vc4_hdmi->hdmicore_regs) 2735 return -ENOMEM; 2736 2737 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hd"); 2738 if (!res) 2739 return -ENODEV; 2740 2741 vc4_hdmi->hd_regs = devm_ioremap(dev, res->start, resource_size(res)); 2742 if (!vc4_hdmi->hd_regs) 2743 return -ENOMEM; 2744 2745 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cec"); 2746 if (!res) 2747 return -ENODEV; 2748 2749 vc4_hdmi->cec_regs = devm_ioremap(dev, res->start, resource_size(res)); 2750 if (!vc4_hdmi->cec_regs) 2751 return -ENOMEM; 2752 2753 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "csc"); 2754 if (!res) 2755 return -ENODEV; 2756 2757 vc4_hdmi->csc_regs = devm_ioremap(dev, res->start, resource_size(res)); 2758 if (!vc4_hdmi->csc_regs) 2759 return -ENOMEM; 2760 2761 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dvp"); 2762 if (!res) 2763 return -ENODEV; 2764 2765 vc4_hdmi->dvp_regs = devm_ioremap(dev, res->start, resource_size(res)); 2766 if (!vc4_hdmi->dvp_regs) 2767 return -ENOMEM; 2768 2769 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy"); 2770 if (!res) 2771 return -ENODEV; 2772 2773 vc4_hdmi->phy_regs = devm_ioremap(dev, res->start, resource_size(res)); 2774 if (!vc4_hdmi->phy_regs) 2775 return -ENOMEM; 2776 2777 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "packet"); 2778 if (!res) 2779 return -ENODEV; 2780 2781 vc4_hdmi->ram_regs = devm_ioremap(dev, res->start, resource_size(res)); 2782 if (!vc4_hdmi->ram_regs) 2783 return -ENOMEM; 2784 2785 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rm"); 2786 if (!res) 2787 return -ENODEV; 2788 2789 vc4_hdmi->rm_regs = devm_ioremap(dev, res->start, resource_size(res)); 2790 if (!vc4_hdmi->rm_regs) 2791 return -ENOMEM; 2792 2793 vc4_hdmi->hsm_clock = devm_clk_get(dev, "hdmi"); 2794 if (IS_ERR(vc4_hdmi->hsm_clock)) { 2795 DRM_ERROR("Failed to get HDMI state machine clock\n"); 2796 return PTR_ERR(vc4_hdmi->hsm_clock); 2797 } 2798 2799 vc4_hdmi->pixel_bvb_clock = devm_clk_get(dev, "bvb"); 2800 if (IS_ERR(vc4_hdmi->pixel_bvb_clock)) { 2801 DRM_ERROR("Failed to get pixel bvb clock\n"); 2802 return PTR_ERR(vc4_hdmi->pixel_bvb_clock); 2803 } 2804 2805 vc4_hdmi->audio_clock = devm_clk_get(dev, "audio"); 2806 if (IS_ERR(vc4_hdmi->audio_clock)) { 2807 DRM_ERROR("Failed to get audio clock\n"); 2808 return PTR_ERR(vc4_hdmi->audio_clock); 2809 } 2810 2811 vc4_hdmi->cec_clock = devm_clk_get(dev, "cec"); 2812 if (IS_ERR(vc4_hdmi->cec_clock)) { 2813 DRM_ERROR("Failed to get CEC clock\n"); 2814 return PTR_ERR(vc4_hdmi->cec_clock); 2815 } 2816 2817 vc4_hdmi->reset = devm_reset_control_get(dev, NULL); 2818 if (IS_ERR(vc4_hdmi->reset)) { 2819 DRM_ERROR("Failed to get HDMI reset line\n"); 2820 return PTR_ERR(vc4_hdmi->reset); 2821 } 2822 2823 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->hdmi_regset, VC4_HDMI); 2824 if (ret) 2825 return ret; 2826 2827 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->hd_regset, VC4_HD); 2828 if (ret) 2829 return ret; 2830 2831 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->cec_regset, VC5_CEC); 2832 if (ret) 2833 return ret; 2834 2835 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->csc_regset, VC5_CSC); 2836 if (ret) 2837 return ret; 2838 2839 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->dvp_regset, VC5_DVP); 2840 if (ret) 2841 return ret; 2842 2843 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->phy_regset, VC5_PHY); 2844 if (ret) 2845 return ret; 2846 2847 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->ram_regset, VC5_RAM); 2848 if (ret) 2849 return ret; 2850 2851 ret = vc4_hdmi_build_regset(vc4_hdmi, &vc4_hdmi->rm_regset, VC5_RM); 2852 if (ret) 2853 return ret; 2854 2855 return 0; 2856 } 2857 2858 static int __maybe_unused vc4_hdmi_runtime_suspend(struct device *dev) 2859 { 2860 struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); 2861 2862 clk_disable_unprepare(vc4_hdmi->hsm_clock); 2863 2864 return 0; 2865 } 2866 2867 static int vc4_hdmi_runtime_resume(struct device *dev) 2868 { 2869 struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); 2870 unsigned long __maybe_unused flags; 2871 u32 __maybe_unused value; 2872 int ret; 2873 2874 ret = clk_prepare_enable(vc4_hdmi->hsm_clock); 2875 if (ret) 2876 return ret; 2877 2878 if (vc4_hdmi->variant->reset) 2879 vc4_hdmi->variant->reset(vc4_hdmi); 2880 2881 #ifdef CONFIG_DRM_VC4_HDMI_CEC 2882 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 2883 value = HDMI_READ(HDMI_CEC_CNTRL_1); 2884 /* Set the logical address to Unregistered */ 2885 value |= VC4_HDMI_CEC_ADDR_MASK; 2886 HDMI_WRITE(HDMI_CEC_CNTRL_1, value); 2887 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 2888 2889 vc4_hdmi_cec_update_clk_div(vc4_hdmi); 2890 2891 if (!vc4_hdmi->variant->external_irq_controller) { 2892 spin_lock_irqsave(&vc4_hdmi->hw_lock, flags); 2893 HDMI_WRITE(HDMI_CEC_CPU_MASK_SET, 0xffffffff); 2894 spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags); 2895 } 2896 #endif 2897 2898 return 0; 2899 } 2900 2901 static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) 2902 { 2903 const struct vc4_hdmi_variant *variant = of_device_get_match_data(dev); 2904 struct platform_device *pdev = to_platform_device(dev); 2905 struct drm_device *drm = dev_get_drvdata(master); 2906 struct vc4_hdmi *vc4_hdmi; 2907 struct drm_encoder *encoder; 2908 struct device_node *ddc_node; 2909 int ret; 2910 2911 vc4_hdmi = devm_kzalloc(dev, sizeof(*vc4_hdmi), GFP_KERNEL); 2912 if (!vc4_hdmi) 2913 return -ENOMEM; 2914 mutex_init(&vc4_hdmi->mutex); 2915 spin_lock_init(&vc4_hdmi->hw_lock); 2916 INIT_DELAYED_WORK(&vc4_hdmi->scrambling_work, vc4_hdmi_scrambling_wq); 2917 2918 dev_set_drvdata(dev, vc4_hdmi); 2919 encoder = &vc4_hdmi->encoder.base; 2920 vc4_hdmi->encoder.type = variant->encoder_type; 2921 vc4_hdmi->encoder.pre_crtc_configure = vc4_hdmi_encoder_pre_crtc_configure; 2922 vc4_hdmi->encoder.pre_crtc_enable = vc4_hdmi_encoder_pre_crtc_enable; 2923 vc4_hdmi->encoder.post_crtc_enable = vc4_hdmi_encoder_post_crtc_enable; 2924 vc4_hdmi->encoder.post_crtc_disable = vc4_hdmi_encoder_post_crtc_disable; 2925 vc4_hdmi->encoder.post_crtc_powerdown = vc4_hdmi_encoder_post_crtc_powerdown; 2926 vc4_hdmi->pdev = pdev; 2927 vc4_hdmi->variant = variant; 2928 2929 /* 2930 * Since we don't know the state of the controller and its 2931 * display (if any), let's assume it's always enabled. 2932 * vc4_hdmi_disable_scrambling() will thus run at boot, make 2933 * sure it's disabled, and avoid any inconsistency. 2934 */ 2935 if (variant->max_pixel_clock > HDMI_14_MAX_TMDS_CLK) 2936 vc4_hdmi->scdc_enabled = true; 2937 2938 ret = variant->init_resources(vc4_hdmi); 2939 if (ret) 2940 return ret; 2941 2942 ddc_node = of_parse_phandle(dev->of_node, "ddc", 0); 2943 if (!ddc_node) { 2944 DRM_ERROR("Failed to find ddc node in device tree\n"); 2945 return -ENODEV; 2946 } 2947 2948 vc4_hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node); 2949 of_node_put(ddc_node); 2950 if (!vc4_hdmi->ddc) { 2951 DRM_DEBUG("Failed to get ddc i2c adapter by node\n"); 2952 return -EPROBE_DEFER; 2953 } 2954 2955 /* Only use the GPIO HPD pin if present in the DT, otherwise 2956 * we'll use the HDMI core's register. 2957 */ 2958 vc4_hdmi->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); 2959 if (IS_ERR(vc4_hdmi->hpd_gpio)) { 2960 ret = PTR_ERR(vc4_hdmi->hpd_gpio); 2961 goto err_put_ddc; 2962 } 2963 2964 vc4_hdmi->disable_wifi_frequencies = 2965 of_property_read_bool(dev->of_node, "wifi-2.4ghz-coexistence"); 2966 2967 if (variant->max_pixel_clock == 600000000) { 2968 struct vc4_dev *vc4 = to_vc4_dev(drm); 2969 long max_rate = clk_round_rate(vc4->hvs->core_clk, 550000000); 2970 2971 if (max_rate < 550000000) 2972 vc4_hdmi->disable_4kp60 = true; 2973 } 2974 2975 /* 2976 * We need to have the device powered up at this point to call 2977 * our reset hook and for the CEC init. 2978 */ 2979 ret = vc4_hdmi_runtime_resume(dev); 2980 if (ret) 2981 goto err_put_ddc; 2982 2983 pm_runtime_get_noresume(dev); 2984 pm_runtime_set_active(dev); 2985 pm_runtime_enable(dev); 2986 2987 if ((of_device_is_compatible(dev->of_node, "brcm,bcm2711-hdmi0") || 2988 of_device_is_compatible(dev->of_node, "brcm,bcm2711-hdmi1")) && 2989 HDMI_READ(HDMI_VID_CTL) & VC4_HD_VID_CTL_ENABLE) { 2990 clk_prepare_enable(vc4_hdmi->pixel_clock); 2991 clk_prepare_enable(vc4_hdmi->hsm_clock); 2992 clk_prepare_enable(vc4_hdmi->pixel_bvb_clock); 2993 } 2994 2995 drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); 2996 drm_encoder_helper_add(encoder, &vc4_hdmi_encoder_helper_funcs); 2997 2998 ret = vc4_hdmi_connector_init(drm, vc4_hdmi); 2999 if (ret) 3000 goto err_destroy_encoder; 3001 3002 ret = vc4_hdmi_hotplug_init(vc4_hdmi); 3003 if (ret) 3004 goto err_destroy_conn; 3005 3006 ret = vc4_hdmi_cec_init(vc4_hdmi); 3007 if (ret) 3008 goto err_free_hotplug; 3009 3010 ret = vc4_hdmi_audio_init(vc4_hdmi); 3011 if (ret) 3012 goto err_free_cec; 3013 3014 vc4_debugfs_add_file(drm, variant->debugfs_name, 3015 vc4_hdmi_debugfs_regs, 3016 vc4_hdmi); 3017 3018 pm_runtime_put_sync(dev); 3019 3020 return 0; 3021 3022 err_free_cec: 3023 vc4_hdmi_cec_exit(vc4_hdmi); 3024 err_free_hotplug: 3025 vc4_hdmi_hotplug_exit(vc4_hdmi); 3026 err_destroy_conn: 3027 vc4_hdmi_connector_destroy(&vc4_hdmi->connector); 3028 err_destroy_encoder: 3029 drm_encoder_cleanup(encoder); 3030 pm_runtime_put_sync(dev); 3031 pm_runtime_disable(dev); 3032 err_put_ddc: 3033 put_device(&vc4_hdmi->ddc->dev); 3034 3035 return ret; 3036 } 3037 3038 static void vc4_hdmi_unbind(struct device *dev, struct device *master, 3039 void *data) 3040 { 3041 struct vc4_hdmi *vc4_hdmi; 3042 3043 /* 3044 * ASoC makes it a bit hard to retrieve a pointer to the 3045 * vc4_hdmi structure. Registering the card will overwrite our 3046 * device drvdata with a pointer to the snd_soc_card structure, 3047 * which can then be used to retrieve whatever drvdata we want 3048 * to associate. 3049 * 3050 * However, that doesn't fly in the case where we wouldn't 3051 * register an ASoC card (because of an old DT that is missing 3052 * the dmas properties for example), then the card isn't 3053 * registered and the device drvdata wouldn't be set. 3054 * 3055 * We can deal with both cases by making sure a snd_soc_card 3056 * pointer and a vc4_hdmi structure are pointing to the same 3057 * memory address, so we can treat them indistinctly without any 3058 * issue. 3059 */ 3060 BUILD_BUG_ON(offsetof(struct vc4_hdmi_audio, card) != 0); 3061 BUILD_BUG_ON(offsetof(struct vc4_hdmi, audio) != 0); 3062 vc4_hdmi = dev_get_drvdata(dev); 3063 3064 kfree(vc4_hdmi->hdmi_regset.regs); 3065 kfree(vc4_hdmi->hd_regset.regs); 3066 3067 vc4_hdmi_audio_exit(vc4_hdmi); 3068 vc4_hdmi_cec_exit(vc4_hdmi); 3069 vc4_hdmi_hotplug_exit(vc4_hdmi); 3070 vc4_hdmi_connector_destroy(&vc4_hdmi->connector); 3071 drm_encoder_cleanup(&vc4_hdmi->encoder.base); 3072 3073 pm_runtime_disable(dev); 3074 3075 put_device(&vc4_hdmi->ddc->dev); 3076 } 3077 3078 static const struct component_ops vc4_hdmi_ops = { 3079 .bind = vc4_hdmi_bind, 3080 .unbind = vc4_hdmi_unbind, 3081 }; 3082 3083 static int vc4_hdmi_dev_probe(struct platform_device *pdev) 3084 { 3085 return component_add(&pdev->dev, &vc4_hdmi_ops); 3086 } 3087 3088 static int vc4_hdmi_dev_remove(struct platform_device *pdev) 3089 { 3090 component_del(&pdev->dev, &vc4_hdmi_ops); 3091 return 0; 3092 } 3093 3094 static const struct vc4_hdmi_variant bcm2835_variant = { 3095 .encoder_type = VC4_ENCODER_TYPE_HDMI0, 3096 .debugfs_name = "hdmi_regs", 3097 .card_name = "vc4-hdmi", 3098 .max_pixel_clock = 162000000, 3099 .registers = vc4_hdmi_fields, 3100 .num_registers = ARRAY_SIZE(vc4_hdmi_fields), 3101 3102 .init_resources = vc4_hdmi_init_resources, 3103 .csc_setup = vc4_hdmi_csc_setup, 3104 .reset = vc4_hdmi_reset, 3105 .set_timings = vc4_hdmi_set_timings, 3106 .phy_init = vc4_hdmi_phy_init, 3107 .phy_disable = vc4_hdmi_phy_disable, 3108 .phy_rng_enable = vc4_hdmi_phy_rng_enable, 3109 .phy_rng_disable = vc4_hdmi_phy_rng_disable, 3110 .channel_map = vc4_hdmi_channel_map, 3111 .supports_hdr = false, 3112 }; 3113 3114 static const struct vc4_hdmi_variant bcm2711_hdmi0_variant = { 3115 .encoder_type = VC4_ENCODER_TYPE_HDMI0, 3116 .debugfs_name = "hdmi0_regs", 3117 .card_name = "vc4-hdmi-0", 3118 .max_pixel_clock = 600000000, 3119 .registers = vc5_hdmi_hdmi0_fields, 3120 .num_registers = ARRAY_SIZE(vc5_hdmi_hdmi0_fields), 3121 .phy_lane_mapping = { 3122 PHY_LANE_0, 3123 PHY_LANE_1, 3124 PHY_LANE_2, 3125 PHY_LANE_CK, 3126 }, 3127 .unsupported_odd_h_timings = true, 3128 .external_irq_controller = true, 3129 3130 .init_resources = vc5_hdmi_init_resources, 3131 .csc_setup = vc5_hdmi_csc_setup, 3132 .reset = vc5_hdmi_reset, 3133 .set_timings = vc5_hdmi_set_timings, 3134 .phy_init = vc5_hdmi_phy_init, 3135 .phy_disable = vc5_hdmi_phy_disable, 3136 .phy_rng_enable = vc5_hdmi_phy_rng_enable, 3137 .phy_rng_disable = vc5_hdmi_phy_rng_disable, 3138 .channel_map = vc5_hdmi_channel_map, 3139 .supports_hdr = true, 3140 .hp_detect = vc5_hdmi_hp_detect, 3141 }; 3142 3143 static const struct vc4_hdmi_variant bcm2711_hdmi1_variant = { 3144 .encoder_type = VC4_ENCODER_TYPE_HDMI1, 3145 .debugfs_name = "hdmi1_regs", 3146 .card_name = "vc4-hdmi-1", 3147 .max_pixel_clock = HDMI_14_MAX_TMDS_CLK, 3148 .registers = vc5_hdmi_hdmi1_fields, 3149 .num_registers = ARRAY_SIZE(vc5_hdmi_hdmi1_fields), 3150 .phy_lane_mapping = { 3151 PHY_LANE_1, 3152 PHY_LANE_0, 3153 PHY_LANE_CK, 3154 PHY_LANE_2, 3155 }, 3156 .unsupported_odd_h_timings = true, 3157 .external_irq_controller = true, 3158 3159 .init_resources = vc5_hdmi_init_resources, 3160 .csc_setup = vc5_hdmi_csc_setup, 3161 .reset = vc5_hdmi_reset, 3162 .set_timings = vc5_hdmi_set_timings, 3163 .phy_init = vc5_hdmi_phy_init, 3164 .phy_disable = vc5_hdmi_phy_disable, 3165 .phy_rng_enable = vc5_hdmi_phy_rng_enable, 3166 .phy_rng_disable = vc5_hdmi_phy_rng_disable, 3167 .channel_map = vc5_hdmi_channel_map, 3168 .supports_hdr = true, 3169 .hp_detect = vc5_hdmi_hp_detect, 3170 }; 3171 3172 static const struct of_device_id vc4_hdmi_dt_match[] = { 3173 { .compatible = "brcm,bcm2835-hdmi", .data = &bcm2835_variant }, 3174 { .compatible = "brcm,bcm2711-hdmi0", .data = &bcm2711_hdmi0_variant }, 3175 { .compatible = "brcm,bcm2711-hdmi1", .data = &bcm2711_hdmi1_variant }, 3176 {} 3177 }; 3178 3179 static const struct dev_pm_ops vc4_hdmi_pm_ops = { 3180 SET_RUNTIME_PM_OPS(vc4_hdmi_runtime_suspend, 3181 vc4_hdmi_runtime_resume, 3182 NULL) 3183 }; 3184 3185 struct platform_driver vc4_hdmi_driver = { 3186 .probe = vc4_hdmi_dev_probe, 3187 .remove = vc4_hdmi_dev_remove, 3188 .driver = { 3189 .name = "vc4_hdmi", 3190 .of_match_table = vc4_hdmi_dt_match, 3191 .pm = &vc4_hdmi_pm_ops, 3192 }, 3193 }; 3194