1 /* 2 * Copyright © 2018 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: 24 * Madhav Chauhan <madhav.chauhan@intel.com> 25 * Jani Nikula <jani.nikula@intel.com> 26 */ 27 28 #include <drm/drm_atomic_helper.h> 29 #include <drm/drm_mipi_dsi.h> 30 31 #include "intel_atomic.h" 32 #include "intel_combo_phy.h" 33 #include "intel_connector.h" 34 #include "intel_ddi.h" 35 #include "intel_dsi.h" 36 #include "intel_panel.h" 37 38 static inline int header_credits_available(struct drm_i915_private *dev_priv, 39 enum transcoder dsi_trans) 40 { 41 return (I915_READ(DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK) 42 >> FREE_HEADER_CREDIT_SHIFT; 43 } 44 45 static inline int payload_credits_available(struct drm_i915_private *dev_priv, 46 enum transcoder dsi_trans) 47 { 48 return (I915_READ(DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK) 49 >> FREE_PLOAD_CREDIT_SHIFT; 50 } 51 52 static void wait_for_header_credits(struct drm_i915_private *dev_priv, 53 enum transcoder dsi_trans) 54 { 55 if (wait_for_us(header_credits_available(dev_priv, dsi_trans) >= 56 MAX_HEADER_CREDIT, 100)) 57 DRM_ERROR("DSI header credits not released\n"); 58 } 59 60 static void wait_for_payload_credits(struct drm_i915_private *dev_priv, 61 enum transcoder dsi_trans) 62 { 63 if (wait_for_us(payload_credits_available(dev_priv, dsi_trans) >= 64 MAX_PLOAD_CREDIT, 100)) 65 DRM_ERROR("DSI payload credits not released\n"); 66 } 67 68 static enum transcoder dsi_port_to_transcoder(enum port port) 69 { 70 if (port == PORT_A) 71 return TRANSCODER_DSI_0; 72 else 73 return TRANSCODER_DSI_1; 74 } 75 76 static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder) 77 { 78 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 79 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 80 struct mipi_dsi_device *dsi; 81 enum port port; 82 enum transcoder dsi_trans; 83 int ret; 84 85 /* wait for header/payload credits to be released */ 86 for_each_dsi_port(port, intel_dsi->ports) { 87 dsi_trans = dsi_port_to_transcoder(port); 88 wait_for_header_credits(dev_priv, dsi_trans); 89 wait_for_payload_credits(dev_priv, dsi_trans); 90 } 91 92 /* send nop DCS command */ 93 for_each_dsi_port(port, intel_dsi->ports) { 94 dsi = intel_dsi->dsi_hosts[port]->device; 95 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 96 dsi->channel = 0; 97 ret = mipi_dsi_dcs_nop(dsi); 98 if (ret < 0) 99 DRM_ERROR("error sending DCS NOP command\n"); 100 } 101 102 /* wait for header credits to be released */ 103 for_each_dsi_port(port, intel_dsi->ports) { 104 dsi_trans = dsi_port_to_transcoder(port); 105 wait_for_header_credits(dev_priv, dsi_trans); 106 } 107 108 /* wait for LP TX in progress bit to be cleared */ 109 for_each_dsi_port(port, intel_dsi->ports) { 110 dsi_trans = dsi_port_to_transcoder(port); 111 if (wait_for_us(!(I915_READ(DSI_LP_MSG(dsi_trans)) & 112 LPTX_IN_PROGRESS), 20)) 113 DRM_ERROR("LPTX bit not cleared\n"); 114 } 115 } 116 117 static bool add_payld_to_queue(struct intel_dsi_host *host, const u8 *data, 118 u32 len) 119 { 120 struct intel_dsi *intel_dsi = host->intel_dsi; 121 struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev); 122 enum transcoder dsi_trans = dsi_port_to_transcoder(host->port); 123 int free_credits; 124 int i, j; 125 126 for (i = 0; i < len; i += 4) { 127 u32 tmp = 0; 128 129 free_credits = payload_credits_available(dev_priv, dsi_trans); 130 if (free_credits < 1) { 131 DRM_ERROR("Payload credit not available\n"); 132 return false; 133 } 134 135 for (j = 0; j < min_t(u32, len - i, 4); j++) 136 tmp |= *data++ << 8 * j; 137 138 I915_WRITE(DSI_CMD_TXPYLD(dsi_trans), tmp); 139 } 140 141 return true; 142 } 143 144 static int dsi_send_pkt_hdr(struct intel_dsi_host *host, 145 struct mipi_dsi_packet pkt, bool enable_lpdt) 146 { 147 struct intel_dsi *intel_dsi = host->intel_dsi; 148 struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev); 149 enum transcoder dsi_trans = dsi_port_to_transcoder(host->port); 150 u32 tmp; 151 int free_credits; 152 153 /* check if header credit available */ 154 free_credits = header_credits_available(dev_priv, dsi_trans); 155 if (free_credits < 1) { 156 DRM_ERROR("send pkt header failed, not enough hdr credits\n"); 157 return -1; 158 } 159 160 tmp = I915_READ(DSI_CMD_TXHDR(dsi_trans)); 161 162 if (pkt.payload) 163 tmp |= PAYLOAD_PRESENT; 164 else 165 tmp &= ~PAYLOAD_PRESENT; 166 167 tmp &= ~VBLANK_FENCE; 168 169 if (enable_lpdt) 170 tmp |= LP_DATA_TRANSFER; 171 172 tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK); 173 tmp |= ((pkt.header[0] & VC_MASK) << VC_SHIFT); 174 tmp |= ((pkt.header[0] & DT_MASK) << DT_SHIFT); 175 tmp |= (pkt.header[1] << PARAM_WC_LOWER_SHIFT); 176 tmp |= (pkt.header[2] << PARAM_WC_UPPER_SHIFT); 177 I915_WRITE(DSI_CMD_TXHDR(dsi_trans), tmp); 178 179 return 0; 180 } 181 182 static int dsi_send_pkt_payld(struct intel_dsi_host *host, 183 struct mipi_dsi_packet pkt) 184 { 185 /* payload queue can accept *256 bytes*, check limit */ 186 if (pkt.payload_length > MAX_PLOAD_CREDIT * 4) { 187 DRM_ERROR("payload size exceeds max queue limit\n"); 188 return -1; 189 } 190 191 /* load data into command payload queue */ 192 if (!add_payld_to_queue(host, pkt.payload, 193 pkt.payload_length)) { 194 DRM_ERROR("adding payload to queue failed\n"); 195 return -1; 196 } 197 198 return 0; 199 } 200 201 static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder) 202 { 203 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 204 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 205 enum phy phy; 206 u32 tmp; 207 int lane; 208 209 for_each_dsi_phy(phy, intel_dsi->phys) { 210 /* 211 * Program voltage swing and pre-emphasis level values as per 212 * table in BSPEC under DDI buffer programing 213 */ 214 tmp = I915_READ(ICL_PORT_TX_DW5_LN0(phy)); 215 tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK); 216 tmp |= SCALING_MODE_SEL(0x2); 217 tmp |= TAP2_DISABLE | TAP3_DISABLE; 218 tmp |= RTERM_SELECT(0x6); 219 I915_WRITE(ICL_PORT_TX_DW5_GRP(phy), tmp); 220 221 tmp = I915_READ(ICL_PORT_TX_DW5_AUX(phy)); 222 tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK); 223 tmp |= SCALING_MODE_SEL(0x2); 224 tmp |= TAP2_DISABLE | TAP3_DISABLE; 225 tmp |= RTERM_SELECT(0x6); 226 I915_WRITE(ICL_PORT_TX_DW5_AUX(phy), tmp); 227 228 tmp = I915_READ(ICL_PORT_TX_DW2_LN0(phy)); 229 tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 230 RCOMP_SCALAR_MASK); 231 tmp |= SWING_SEL_UPPER(0x2); 232 tmp |= SWING_SEL_LOWER(0x2); 233 tmp |= RCOMP_SCALAR(0x98); 234 I915_WRITE(ICL_PORT_TX_DW2_GRP(phy), tmp); 235 236 tmp = I915_READ(ICL_PORT_TX_DW2_AUX(phy)); 237 tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 238 RCOMP_SCALAR_MASK); 239 tmp |= SWING_SEL_UPPER(0x2); 240 tmp |= SWING_SEL_LOWER(0x2); 241 tmp |= RCOMP_SCALAR(0x98); 242 I915_WRITE(ICL_PORT_TX_DW2_AUX(phy), tmp); 243 244 tmp = I915_READ(ICL_PORT_TX_DW4_AUX(phy)); 245 tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 246 CURSOR_COEFF_MASK); 247 tmp |= POST_CURSOR_1(0x0); 248 tmp |= POST_CURSOR_2(0x0); 249 tmp |= CURSOR_COEFF(0x3f); 250 I915_WRITE(ICL_PORT_TX_DW4_AUX(phy), tmp); 251 252 for (lane = 0; lane <= 3; lane++) { 253 /* Bspec: must not use GRP register for write */ 254 tmp = I915_READ(ICL_PORT_TX_DW4_LN(lane, phy)); 255 tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 256 CURSOR_COEFF_MASK); 257 tmp |= POST_CURSOR_1(0x0); 258 tmp |= POST_CURSOR_2(0x0); 259 tmp |= CURSOR_COEFF(0x3f); 260 I915_WRITE(ICL_PORT_TX_DW4_LN(lane, phy), tmp); 261 } 262 } 263 } 264 265 static void configure_dual_link_mode(struct intel_encoder *encoder, 266 const struct intel_crtc_state *pipe_config) 267 { 268 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 269 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 270 u32 dss_ctl1; 271 272 dss_ctl1 = I915_READ(DSS_CTL1); 273 dss_ctl1 |= SPLITTER_ENABLE; 274 dss_ctl1 &= ~OVERLAP_PIXELS_MASK; 275 dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap); 276 277 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { 278 const struct drm_display_mode *adjusted_mode = 279 &pipe_config->base.adjusted_mode; 280 u32 dss_ctl2; 281 u16 hactive = adjusted_mode->crtc_hdisplay; 282 u16 dl_buffer_depth; 283 284 dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE; 285 dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap; 286 287 if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH) 288 DRM_ERROR("DL buffer depth exceed max value\n"); 289 290 dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK; 291 dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); 292 dss_ctl2 = I915_READ(DSS_CTL2); 293 dss_ctl2 &= ~RIGHT_DL_BUF_TARGET_DEPTH_MASK; 294 dss_ctl2 |= RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); 295 I915_WRITE(DSS_CTL2, dss_ctl2); 296 } else { 297 /* Interleave */ 298 dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE; 299 } 300 301 I915_WRITE(DSS_CTL1, dss_ctl1); 302 } 303 304 static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder) 305 { 306 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 307 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 308 enum port port; 309 u32 bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 310 u32 afe_clk_khz; /* 8X Clock */ 311 u32 esc_clk_div_m; 312 313 afe_clk_khz = DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, 314 intel_dsi->lane_count); 315 316 esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK); 317 318 for_each_dsi_port(port, intel_dsi->ports) { 319 I915_WRITE(ICL_DSI_ESC_CLK_DIV(port), 320 esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); 321 POSTING_READ(ICL_DSI_ESC_CLK_DIV(port)); 322 } 323 324 for_each_dsi_port(port, intel_dsi->ports) { 325 I915_WRITE(ICL_DPHY_ESC_CLK_DIV(port), 326 esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); 327 POSTING_READ(ICL_DPHY_ESC_CLK_DIV(port)); 328 } 329 } 330 331 static void get_dsi_io_power_domains(struct drm_i915_private *dev_priv, 332 struct intel_dsi *intel_dsi) 333 { 334 enum port port; 335 336 for_each_dsi_port(port, intel_dsi->ports) { 337 WARN_ON(intel_dsi->io_wakeref[port]); 338 intel_dsi->io_wakeref[port] = 339 intel_display_power_get(dev_priv, 340 port == PORT_A ? 341 POWER_DOMAIN_PORT_DDI_A_IO : 342 POWER_DOMAIN_PORT_DDI_B_IO); 343 } 344 } 345 346 static void gen11_dsi_enable_io_power(struct intel_encoder *encoder) 347 { 348 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 349 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 350 enum port port; 351 u32 tmp; 352 353 for_each_dsi_port(port, intel_dsi->ports) { 354 tmp = I915_READ(ICL_DSI_IO_MODECTL(port)); 355 tmp |= COMBO_PHY_MODE_DSI; 356 I915_WRITE(ICL_DSI_IO_MODECTL(port), tmp); 357 } 358 359 get_dsi_io_power_domains(dev_priv, intel_dsi); 360 } 361 362 static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder) 363 { 364 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 365 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 366 enum phy phy; 367 368 for_each_dsi_phy(phy, intel_dsi->phys) 369 intel_combo_phy_power_up_lanes(dev_priv, phy, true, 370 intel_dsi->lane_count, false); 371 } 372 373 static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder) 374 { 375 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 376 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 377 enum phy phy; 378 u32 tmp; 379 int lane; 380 381 /* Step 4b(i) set loadgen select for transmit and aux lanes */ 382 for_each_dsi_phy(phy, intel_dsi->phys) { 383 tmp = I915_READ(ICL_PORT_TX_DW4_AUX(phy)); 384 tmp &= ~LOADGEN_SELECT; 385 I915_WRITE(ICL_PORT_TX_DW4_AUX(phy), tmp); 386 for (lane = 0; lane <= 3; lane++) { 387 tmp = I915_READ(ICL_PORT_TX_DW4_LN(lane, phy)); 388 tmp &= ~LOADGEN_SELECT; 389 if (lane != 2) 390 tmp |= LOADGEN_SELECT; 391 I915_WRITE(ICL_PORT_TX_DW4_LN(lane, phy), tmp); 392 } 393 } 394 395 /* Step 4b(ii) set latency optimization for transmit and aux lanes */ 396 for_each_dsi_phy(phy, intel_dsi->phys) { 397 tmp = I915_READ(ICL_PORT_TX_DW2_AUX(phy)); 398 tmp &= ~FRC_LATENCY_OPTIM_MASK; 399 tmp |= FRC_LATENCY_OPTIM_VAL(0x5); 400 I915_WRITE(ICL_PORT_TX_DW2_AUX(phy), tmp); 401 tmp = I915_READ(ICL_PORT_TX_DW2_LN0(phy)); 402 tmp &= ~FRC_LATENCY_OPTIM_MASK; 403 tmp |= FRC_LATENCY_OPTIM_VAL(0x5); 404 I915_WRITE(ICL_PORT_TX_DW2_GRP(phy), tmp); 405 406 /* For EHL, TGL, set latency optimization for PCS_DW1 lanes */ 407 if (IS_ELKHARTLAKE(dev_priv) || (INTEL_GEN(dev_priv) >= 12)) { 408 tmp = I915_READ(ICL_PORT_PCS_DW1_AUX(phy)); 409 tmp &= ~LATENCY_OPTIM_MASK; 410 tmp |= LATENCY_OPTIM_VAL(0); 411 I915_WRITE(ICL_PORT_PCS_DW1_AUX(phy), tmp); 412 413 tmp = I915_READ(ICL_PORT_PCS_DW1_LN0(phy)); 414 tmp &= ~LATENCY_OPTIM_MASK; 415 tmp |= LATENCY_OPTIM_VAL(0x1); 416 I915_WRITE(ICL_PORT_PCS_DW1_GRP(phy), tmp); 417 } 418 } 419 420 } 421 422 static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder) 423 { 424 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 425 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 426 u32 tmp; 427 enum phy phy; 428 429 /* clear common keeper enable bit */ 430 for_each_dsi_phy(phy, intel_dsi->phys) { 431 tmp = I915_READ(ICL_PORT_PCS_DW1_LN0(phy)); 432 tmp &= ~COMMON_KEEPER_EN; 433 I915_WRITE(ICL_PORT_PCS_DW1_GRP(phy), tmp); 434 tmp = I915_READ(ICL_PORT_PCS_DW1_AUX(phy)); 435 tmp &= ~COMMON_KEEPER_EN; 436 I915_WRITE(ICL_PORT_PCS_DW1_AUX(phy), tmp); 437 } 438 439 /* 440 * Set SUS Clock Config bitfield to 11b 441 * Note: loadgen select program is done 442 * as part of lane phy sequence configuration 443 */ 444 for_each_dsi_phy(phy, intel_dsi->phys) { 445 tmp = I915_READ(ICL_PORT_CL_DW5(phy)); 446 tmp |= SUS_CLOCK_CONFIG; 447 I915_WRITE(ICL_PORT_CL_DW5(phy), tmp); 448 } 449 450 /* Clear training enable to change swing values */ 451 for_each_dsi_phy(phy, intel_dsi->phys) { 452 tmp = I915_READ(ICL_PORT_TX_DW5_LN0(phy)); 453 tmp &= ~TX_TRAINING_EN; 454 I915_WRITE(ICL_PORT_TX_DW5_GRP(phy), tmp); 455 tmp = I915_READ(ICL_PORT_TX_DW5_AUX(phy)); 456 tmp &= ~TX_TRAINING_EN; 457 I915_WRITE(ICL_PORT_TX_DW5_AUX(phy), tmp); 458 } 459 460 /* Program swing and de-emphasis */ 461 dsi_program_swing_and_deemphasis(encoder); 462 463 /* Set training enable to trigger update */ 464 for_each_dsi_phy(phy, intel_dsi->phys) { 465 tmp = I915_READ(ICL_PORT_TX_DW5_LN0(phy)); 466 tmp |= TX_TRAINING_EN; 467 I915_WRITE(ICL_PORT_TX_DW5_GRP(phy), tmp); 468 tmp = I915_READ(ICL_PORT_TX_DW5_AUX(phy)); 469 tmp |= TX_TRAINING_EN; 470 I915_WRITE(ICL_PORT_TX_DW5_AUX(phy), tmp); 471 } 472 } 473 474 static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder) 475 { 476 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 477 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 478 u32 tmp; 479 enum port port; 480 481 for_each_dsi_port(port, intel_dsi->ports) { 482 tmp = I915_READ(DDI_BUF_CTL(port)); 483 tmp |= DDI_BUF_CTL_ENABLE; 484 I915_WRITE(DDI_BUF_CTL(port), tmp); 485 486 if (wait_for_us(!(I915_READ(DDI_BUF_CTL(port)) & 487 DDI_BUF_IS_IDLE), 488 500)) 489 DRM_ERROR("DDI port:%c buffer idle\n", port_name(port)); 490 } 491 } 492 493 static void gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder) 494 { 495 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 496 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 497 u32 tmp; 498 enum port port; 499 enum phy phy; 500 501 /* Program T-INIT master registers */ 502 for_each_dsi_port(port, intel_dsi->ports) { 503 tmp = I915_READ(ICL_DSI_T_INIT_MASTER(port)); 504 tmp &= ~MASTER_INIT_TIMER_MASK; 505 tmp |= intel_dsi->init_count; 506 I915_WRITE(ICL_DSI_T_INIT_MASTER(port), tmp); 507 } 508 509 /* Program DPHY clock lanes timings */ 510 for_each_dsi_port(port, intel_dsi->ports) { 511 I915_WRITE(DPHY_CLK_TIMING_PARAM(port), intel_dsi->dphy_reg); 512 513 /* shadow register inside display core */ 514 I915_WRITE(DSI_CLK_TIMING_PARAM(port), intel_dsi->dphy_reg); 515 } 516 517 /* Program DPHY data lanes timings */ 518 for_each_dsi_port(port, intel_dsi->ports) { 519 I915_WRITE(DPHY_DATA_TIMING_PARAM(port), 520 intel_dsi->dphy_data_lane_reg); 521 522 /* shadow register inside display core */ 523 I915_WRITE(DSI_DATA_TIMING_PARAM(port), 524 intel_dsi->dphy_data_lane_reg); 525 } 526 527 /* 528 * If DSI link operating at or below an 800 MHz, 529 * TA_SURE should be override and programmed to 530 * a value '0' inside TA_PARAM_REGISTERS otherwise 531 * leave all fields at HW default values. 532 */ 533 if (IS_GEN(dev_priv, 11)) { 534 if (intel_dsi_bitrate(intel_dsi) <= 800000) { 535 for_each_dsi_port(port, intel_dsi->ports) { 536 tmp = I915_READ(DPHY_TA_TIMING_PARAM(port)); 537 tmp &= ~TA_SURE_MASK; 538 tmp |= TA_SURE_OVERRIDE | TA_SURE(0); 539 I915_WRITE(DPHY_TA_TIMING_PARAM(port), tmp); 540 541 /* shadow register inside display core */ 542 tmp = I915_READ(DSI_TA_TIMING_PARAM(port)); 543 tmp &= ~TA_SURE_MASK; 544 tmp |= TA_SURE_OVERRIDE | TA_SURE(0); 545 I915_WRITE(DSI_TA_TIMING_PARAM(port), tmp); 546 } 547 } 548 } 549 550 if (IS_ELKHARTLAKE(dev_priv)) { 551 for_each_dsi_phy(phy, intel_dsi->phys) { 552 tmp = I915_READ(ICL_DPHY_CHKN(phy)); 553 tmp |= ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP; 554 I915_WRITE(ICL_DPHY_CHKN(phy), tmp); 555 } 556 } 557 } 558 559 static void gen11_dsi_gate_clocks(struct intel_encoder *encoder) 560 { 561 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 562 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 563 u32 tmp; 564 enum phy phy; 565 566 mutex_lock(&dev_priv->dpll_lock); 567 tmp = I915_READ(ICL_DPCLKA_CFGCR0); 568 for_each_dsi_phy(phy, intel_dsi->phys) 569 tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 570 571 I915_WRITE(ICL_DPCLKA_CFGCR0, tmp); 572 mutex_unlock(&dev_priv->dpll_lock); 573 } 574 575 static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder) 576 { 577 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 578 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 579 u32 tmp; 580 enum phy phy; 581 582 mutex_lock(&dev_priv->dpll_lock); 583 tmp = I915_READ(ICL_DPCLKA_CFGCR0); 584 for_each_dsi_phy(phy, intel_dsi->phys) 585 tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 586 587 I915_WRITE(ICL_DPCLKA_CFGCR0, tmp); 588 mutex_unlock(&dev_priv->dpll_lock); 589 } 590 591 static void gen11_dsi_map_pll(struct intel_encoder *encoder, 592 const struct intel_crtc_state *crtc_state) 593 { 594 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 595 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 596 struct intel_shared_dpll *pll = crtc_state->shared_dpll; 597 enum phy phy; 598 u32 val; 599 600 mutex_lock(&dev_priv->dpll_lock); 601 602 val = I915_READ(ICL_DPCLKA_CFGCR0); 603 for_each_dsi_phy(phy, intel_dsi->phys) { 604 val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); 605 val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy); 606 } 607 I915_WRITE(ICL_DPCLKA_CFGCR0, val); 608 609 for_each_dsi_phy(phy, intel_dsi->phys) { 610 if (INTEL_GEN(dev_priv) >= 12) 611 val |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 612 else 613 val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 614 } 615 I915_WRITE(ICL_DPCLKA_CFGCR0, val); 616 617 POSTING_READ(ICL_DPCLKA_CFGCR0); 618 619 mutex_unlock(&dev_priv->dpll_lock); 620 } 621 622 static void 623 gen11_dsi_configure_transcoder(struct intel_encoder *encoder, 624 const struct intel_crtc_state *pipe_config) 625 { 626 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 627 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 628 struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc); 629 enum pipe pipe = intel_crtc->pipe; 630 u32 tmp; 631 enum port port; 632 enum transcoder dsi_trans; 633 634 for_each_dsi_port(port, intel_dsi->ports) { 635 dsi_trans = dsi_port_to_transcoder(port); 636 tmp = I915_READ(DSI_TRANS_FUNC_CONF(dsi_trans)); 637 638 if (intel_dsi->eotp_pkt) 639 tmp &= ~EOTP_DISABLED; 640 else 641 tmp |= EOTP_DISABLED; 642 643 /* enable link calibration if freq > 1.5Gbps */ 644 if (intel_dsi_bitrate(intel_dsi) >= 1500 * 1000) { 645 tmp &= ~LINK_CALIBRATION_MASK; 646 tmp |= CALIBRATION_ENABLED_INITIAL_ONLY; 647 } 648 649 /* configure continuous clock */ 650 tmp &= ~CONTINUOUS_CLK_MASK; 651 if (intel_dsi->clock_stop) 652 tmp |= CLK_ENTER_LP_AFTER_DATA; 653 else 654 tmp |= CLK_HS_CONTINUOUS; 655 656 /* configure buffer threshold limit to minimum */ 657 tmp &= ~PIX_BUF_THRESHOLD_MASK; 658 tmp |= PIX_BUF_THRESHOLD_1_4; 659 660 /* set virtual channel to '0' */ 661 tmp &= ~PIX_VIRT_CHAN_MASK; 662 tmp |= PIX_VIRT_CHAN(0); 663 664 /* program BGR transmission */ 665 if (intel_dsi->bgr_enabled) 666 tmp |= BGR_TRANSMISSION; 667 668 /* select pixel format */ 669 tmp &= ~PIX_FMT_MASK; 670 switch (intel_dsi->pixel_format) { 671 default: 672 MISSING_CASE(intel_dsi->pixel_format); 673 /* fallthrough */ 674 case MIPI_DSI_FMT_RGB565: 675 tmp |= PIX_FMT_RGB565; 676 break; 677 case MIPI_DSI_FMT_RGB666_PACKED: 678 tmp |= PIX_FMT_RGB666_PACKED; 679 break; 680 case MIPI_DSI_FMT_RGB666: 681 tmp |= PIX_FMT_RGB666_LOOSE; 682 break; 683 case MIPI_DSI_FMT_RGB888: 684 tmp |= PIX_FMT_RGB888; 685 break; 686 } 687 688 if (INTEL_GEN(dev_priv) >= 12) { 689 if (is_vid_mode(intel_dsi)) 690 tmp |= BLANKING_PACKET_ENABLE; 691 } 692 693 /* program DSI operation mode */ 694 if (is_vid_mode(intel_dsi)) { 695 tmp &= ~OP_MODE_MASK; 696 switch (intel_dsi->video_mode_format) { 697 default: 698 MISSING_CASE(intel_dsi->video_mode_format); 699 /* fallthrough */ 700 case VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS: 701 tmp |= VIDEO_MODE_SYNC_EVENT; 702 break; 703 case VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE: 704 tmp |= VIDEO_MODE_SYNC_PULSE; 705 break; 706 } 707 } 708 709 I915_WRITE(DSI_TRANS_FUNC_CONF(dsi_trans), tmp); 710 } 711 712 /* enable port sync mode if dual link */ 713 if (intel_dsi->dual_link) { 714 for_each_dsi_port(port, intel_dsi->ports) { 715 dsi_trans = dsi_port_to_transcoder(port); 716 tmp = I915_READ(TRANS_DDI_FUNC_CTL2(dsi_trans)); 717 tmp |= PORT_SYNC_MODE_ENABLE; 718 I915_WRITE(TRANS_DDI_FUNC_CTL2(dsi_trans), tmp); 719 } 720 721 /* configure stream splitting */ 722 configure_dual_link_mode(encoder, pipe_config); 723 } 724 725 for_each_dsi_port(port, intel_dsi->ports) { 726 dsi_trans = dsi_port_to_transcoder(port); 727 728 /* select data lane width */ 729 tmp = I915_READ(TRANS_DDI_FUNC_CTL(dsi_trans)); 730 tmp &= ~DDI_PORT_WIDTH_MASK; 731 tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count); 732 733 /* select input pipe */ 734 tmp &= ~TRANS_DDI_EDP_INPUT_MASK; 735 switch (pipe) { 736 default: 737 MISSING_CASE(pipe); 738 /* fallthrough */ 739 case PIPE_A: 740 tmp |= TRANS_DDI_EDP_INPUT_A_ON; 741 break; 742 case PIPE_B: 743 tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF; 744 break; 745 case PIPE_C: 746 tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF; 747 break; 748 } 749 750 /* enable DDI buffer */ 751 tmp |= TRANS_DDI_FUNC_ENABLE; 752 I915_WRITE(TRANS_DDI_FUNC_CTL(dsi_trans), tmp); 753 } 754 755 /* wait for link ready */ 756 for_each_dsi_port(port, intel_dsi->ports) { 757 dsi_trans = dsi_port_to_transcoder(port); 758 if (wait_for_us((I915_READ(DSI_TRANS_FUNC_CONF(dsi_trans)) & 759 LINK_READY), 2500)) 760 DRM_ERROR("DSI link not ready\n"); 761 } 762 } 763 764 static void 765 gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, 766 const struct intel_crtc_state *pipe_config) 767 { 768 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 769 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 770 const struct drm_display_mode *adjusted_mode = 771 &pipe_config->base.adjusted_mode; 772 enum port port; 773 enum transcoder dsi_trans; 774 /* horizontal timings */ 775 u16 htotal, hactive, hsync_start, hsync_end, hsync_size; 776 u16 hback_porch; 777 /* vertical timings */ 778 u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift; 779 780 hactive = adjusted_mode->crtc_hdisplay; 781 htotal = adjusted_mode->crtc_htotal; 782 hsync_start = adjusted_mode->crtc_hsync_start; 783 hsync_end = adjusted_mode->crtc_hsync_end; 784 hsync_size = hsync_end - hsync_start; 785 hback_porch = (adjusted_mode->crtc_htotal - 786 adjusted_mode->crtc_hsync_end); 787 vactive = adjusted_mode->crtc_vdisplay; 788 vtotal = adjusted_mode->crtc_vtotal; 789 vsync_start = adjusted_mode->crtc_vsync_start; 790 vsync_end = adjusted_mode->crtc_vsync_end; 791 vsync_shift = hsync_start - htotal / 2; 792 793 if (intel_dsi->dual_link) { 794 hactive /= 2; 795 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) 796 hactive += intel_dsi->pixel_overlap; 797 htotal /= 2; 798 } 799 800 /* minimum hactive as per bspec: 256 pixels */ 801 if (adjusted_mode->crtc_hdisplay < 256) 802 DRM_ERROR("hactive is less then 256 pixels\n"); 803 804 /* if RGB666 format, then hactive must be multiple of 4 pixels */ 805 if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0) 806 DRM_ERROR("hactive pixels are not multiple of 4\n"); 807 808 /* program TRANS_HTOTAL register */ 809 for_each_dsi_port(port, intel_dsi->ports) { 810 dsi_trans = dsi_port_to_transcoder(port); 811 I915_WRITE(HTOTAL(dsi_trans), 812 (hactive - 1) | ((htotal - 1) << 16)); 813 } 814 815 /* TRANS_HSYNC register to be programmed only for video mode */ 816 if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) { 817 if (intel_dsi->video_mode_format == 818 VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE) { 819 /* BSPEC: hsync size should be atleast 16 pixels */ 820 if (hsync_size < 16) 821 DRM_ERROR("hsync size < 16 pixels\n"); 822 } 823 824 if (hback_porch < 16) 825 DRM_ERROR("hback porch < 16 pixels\n"); 826 827 if (intel_dsi->dual_link) { 828 hsync_start /= 2; 829 hsync_end /= 2; 830 } 831 832 for_each_dsi_port(port, intel_dsi->ports) { 833 dsi_trans = dsi_port_to_transcoder(port); 834 I915_WRITE(HSYNC(dsi_trans), 835 (hsync_start - 1) | ((hsync_end - 1) << 16)); 836 } 837 } 838 839 /* program TRANS_VTOTAL register */ 840 for_each_dsi_port(port, intel_dsi->ports) { 841 dsi_trans = dsi_port_to_transcoder(port); 842 /* 843 * FIXME: Programing this by assuming progressive mode, since 844 * non-interlaced info from VBT is not saved inside 845 * struct drm_display_mode. 846 * For interlace mode: program required pixel minus 2 847 */ 848 I915_WRITE(VTOTAL(dsi_trans), 849 (vactive - 1) | ((vtotal - 1) << 16)); 850 } 851 852 if (vsync_end < vsync_start || vsync_end > vtotal) 853 DRM_ERROR("Invalid vsync_end value\n"); 854 855 if (vsync_start < vactive) 856 DRM_ERROR("vsync_start less than vactive\n"); 857 858 /* program TRANS_VSYNC register */ 859 for_each_dsi_port(port, intel_dsi->ports) { 860 dsi_trans = dsi_port_to_transcoder(port); 861 I915_WRITE(VSYNC(dsi_trans), 862 (vsync_start - 1) | ((vsync_end - 1) << 16)); 863 } 864 865 /* 866 * FIXME: It has to be programmed only for interlaced 867 * modes. Put the check condition here once interlaced 868 * info available as described above. 869 * program TRANS_VSYNCSHIFT register 870 */ 871 for_each_dsi_port(port, intel_dsi->ports) { 872 dsi_trans = dsi_port_to_transcoder(port); 873 I915_WRITE(VSYNCSHIFT(dsi_trans), vsync_shift); 874 } 875 876 /* program TRANS_VBLANK register, should be same as vtotal programmed */ 877 if (INTEL_GEN(dev_priv) >= 12) { 878 for_each_dsi_port(port, intel_dsi->ports) { 879 dsi_trans = dsi_port_to_transcoder(port); 880 I915_WRITE(VBLANK(dsi_trans), 881 (vactive - 1) | ((vtotal - 1) << 16)); 882 } 883 } 884 } 885 886 static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder) 887 { 888 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 889 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 890 enum port port; 891 enum transcoder dsi_trans; 892 u32 tmp; 893 894 for_each_dsi_port(port, intel_dsi->ports) { 895 dsi_trans = dsi_port_to_transcoder(port); 896 tmp = I915_READ(PIPECONF(dsi_trans)); 897 tmp |= PIPECONF_ENABLE; 898 I915_WRITE(PIPECONF(dsi_trans), tmp); 899 900 /* wait for transcoder to be enabled */ 901 if (intel_de_wait_for_set(dev_priv, PIPECONF(dsi_trans), 902 I965_PIPECONF_ACTIVE, 10)) 903 DRM_ERROR("DSI transcoder not enabled\n"); 904 } 905 } 906 907 static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder) 908 { 909 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 910 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 911 enum port port; 912 enum transcoder dsi_trans; 913 u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul; 914 915 /* 916 * escape clock count calculation: 917 * BYTE_CLK_COUNT = TIME_NS/(8 * UI) 918 * UI (nsec) = (10^6)/Bitrate 919 * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate 920 * ESCAPE_CLK_COUNT = TIME_NS/ESC_CLK_NS 921 */ 922 divisor = intel_dsi_tlpx_ns(intel_dsi) * intel_dsi_bitrate(intel_dsi) * 1000; 923 mul = 8 * 1000000; 924 hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul, 925 divisor); 926 lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor); 927 ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor); 928 929 for_each_dsi_port(port, intel_dsi->ports) { 930 dsi_trans = dsi_port_to_transcoder(port); 931 932 /* program hst_tx_timeout */ 933 tmp = I915_READ(DSI_HSTX_TO(dsi_trans)); 934 tmp &= ~HSTX_TIMEOUT_VALUE_MASK; 935 tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout); 936 I915_WRITE(DSI_HSTX_TO(dsi_trans), tmp); 937 938 /* FIXME: DSI_CALIB_TO */ 939 940 /* program lp_rx_host timeout */ 941 tmp = I915_READ(DSI_LPRX_HOST_TO(dsi_trans)); 942 tmp &= ~LPRX_TIMEOUT_VALUE_MASK; 943 tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout); 944 I915_WRITE(DSI_LPRX_HOST_TO(dsi_trans), tmp); 945 946 /* FIXME: DSI_PWAIT_TO */ 947 948 /* program turn around timeout */ 949 tmp = I915_READ(DSI_TA_TO(dsi_trans)); 950 tmp &= ~TA_TIMEOUT_VALUE_MASK; 951 tmp |= TA_TIMEOUT_VALUE(ta_timeout); 952 I915_WRITE(DSI_TA_TO(dsi_trans), tmp); 953 } 954 } 955 956 static void 957 gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, 958 const struct intel_crtc_state *pipe_config) 959 { 960 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 961 962 /* step 4a: power up all lanes of the DDI used by DSI */ 963 gen11_dsi_power_up_lanes(encoder); 964 965 /* step 4b: configure lane sequencing of the Combo-PHY transmitters */ 966 gen11_dsi_config_phy_lanes_sequence(encoder); 967 968 /* step 4c: configure voltage swing and skew */ 969 gen11_dsi_voltage_swing_program_seq(encoder); 970 971 /* enable DDI buffer */ 972 gen11_dsi_enable_ddi_buffer(encoder); 973 974 /* setup D-PHY timings */ 975 gen11_dsi_setup_dphy_timings(encoder); 976 977 /* step 4h: setup DSI protocol timeouts */ 978 gen11_dsi_setup_timeouts(encoder); 979 980 /* Step (4h, 4i, 4j, 4k): Configure transcoder */ 981 gen11_dsi_configure_transcoder(encoder, pipe_config); 982 983 /* Step 4l: Gate DDI clocks */ 984 if (IS_GEN(dev_priv, 11)) 985 gen11_dsi_gate_clocks(encoder); 986 } 987 988 static void gen11_dsi_powerup_panel(struct intel_encoder *encoder) 989 { 990 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 991 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 992 struct mipi_dsi_device *dsi; 993 enum port port; 994 enum transcoder dsi_trans; 995 u32 tmp; 996 int ret; 997 998 /* set maximum return packet size */ 999 for_each_dsi_port(port, intel_dsi->ports) { 1000 dsi_trans = dsi_port_to_transcoder(port); 1001 1002 /* 1003 * FIXME: This uses the number of DW's currently in the payload 1004 * receive queue. This is probably not what we want here. 1005 */ 1006 tmp = I915_READ(DSI_CMD_RXCTL(dsi_trans)); 1007 tmp &= NUMBER_RX_PLOAD_DW_MASK; 1008 /* multiply "Number Rx Payload DW" by 4 to get max value */ 1009 tmp = tmp * 4; 1010 dsi = intel_dsi->dsi_hosts[port]->device; 1011 ret = mipi_dsi_set_maximum_return_packet_size(dsi, tmp); 1012 if (ret < 0) 1013 DRM_ERROR("error setting max return pkt size%d\n", tmp); 1014 } 1015 1016 /* panel power on related mipi dsi vbt sequences */ 1017 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON); 1018 intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay); 1019 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET); 1020 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP); 1021 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON); 1022 1023 /* ensure all panel commands dispatched before enabling transcoder */ 1024 wait_for_cmds_dispatched_to_panel(encoder); 1025 } 1026 1027 static void gen11_dsi_pre_pll_enable(struct intel_encoder *encoder, 1028 const struct intel_crtc_state *pipe_config, 1029 const struct drm_connector_state *conn_state) 1030 { 1031 /* step2: enable IO power */ 1032 gen11_dsi_enable_io_power(encoder); 1033 1034 /* step3: enable DSI PLL */ 1035 gen11_dsi_program_esc_clk_div(encoder); 1036 } 1037 1038 static void gen11_dsi_pre_enable(struct intel_encoder *encoder, 1039 const struct intel_crtc_state *pipe_config, 1040 const struct drm_connector_state *conn_state) 1041 { 1042 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1043 1044 /* step3b */ 1045 gen11_dsi_map_pll(encoder, pipe_config); 1046 1047 /* step4: enable DSI port and DPHY */ 1048 gen11_dsi_enable_port_and_phy(encoder, pipe_config); 1049 1050 /* step5: program and powerup panel */ 1051 gen11_dsi_powerup_panel(encoder); 1052 1053 /* step6c: configure transcoder timings */ 1054 gen11_dsi_set_transcoder_timings(encoder, pipe_config); 1055 1056 /* step6d: enable dsi transcoder */ 1057 gen11_dsi_enable_transcoder(encoder); 1058 1059 /* step7: enable backlight */ 1060 intel_panel_enable_backlight(pipe_config, conn_state); 1061 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON); 1062 } 1063 1064 static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder) 1065 { 1066 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1067 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1068 enum port port; 1069 enum transcoder dsi_trans; 1070 u32 tmp; 1071 1072 for_each_dsi_port(port, intel_dsi->ports) { 1073 dsi_trans = dsi_port_to_transcoder(port); 1074 1075 /* disable transcoder */ 1076 tmp = I915_READ(PIPECONF(dsi_trans)); 1077 tmp &= ~PIPECONF_ENABLE; 1078 I915_WRITE(PIPECONF(dsi_trans), tmp); 1079 1080 /* wait for transcoder to be disabled */ 1081 if (intel_de_wait_for_clear(dev_priv, PIPECONF(dsi_trans), 1082 I965_PIPECONF_ACTIVE, 50)) 1083 DRM_ERROR("DSI trancoder not disabled\n"); 1084 } 1085 } 1086 1087 static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder) 1088 { 1089 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1090 1091 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF); 1092 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET); 1093 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF); 1094 1095 /* ensure cmds dispatched to panel */ 1096 wait_for_cmds_dispatched_to_panel(encoder); 1097 } 1098 1099 static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder) 1100 { 1101 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1102 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1103 enum port port; 1104 enum transcoder dsi_trans; 1105 u32 tmp; 1106 1107 /* put dsi link in ULPS */ 1108 for_each_dsi_port(port, intel_dsi->ports) { 1109 dsi_trans = dsi_port_to_transcoder(port); 1110 tmp = I915_READ(DSI_LP_MSG(dsi_trans)); 1111 tmp |= LINK_ENTER_ULPS; 1112 tmp &= ~LINK_ULPS_TYPE_LP11; 1113 I915_WRITE(DSI_LP_MSG(dsi_trans), tmp); 1114 1115 if (wait_for_us((I915_READ(DSI_LP_MSG(dsi_trans)) & 1116 LINK_IN_ULPS), 1117 10)) 1118 DRM_ERROR("DSI link not in ULPS\n"); 1119 } 1120 1121 /* disable ddi function */ 1122 for_each_dsi_port(port, intel_dsi->ports) { 1123 dsi_trans = dsi_port_to_transcoder(port); 1124 tmp = I915_READ(TRANS_DDI_FUNC_CTL(dsi_trans)); 1125 tmp &= ~TRANS_DDI_FUNC_ENABLE; 1126 I915_WRITE(TRANS_DDI_FUNC_CTL(dsi_trans), tmp); 1127 } 1128 1129 /* disable port sync mode if dual link */ 1130 if (intel_dsi->dual_link) { 1131 for_each_dsi_port(port, intel_dsi->ports) { 1132 dsi_trans = dsi_port_to_transcoder(port); 1133 tmp = I915_READ(TRANS_DDI_FUNC_CTL2(dsi_trans)); 1134 tmp &= ~PORT_SYNC_MODE_ENABLE; 1135 I915_WRITE(TRANS_DDI_FUNC_CTL2(dsi_trans), tmp); 1136 } 1137 } 1138 } 1139 1140 static void gen11_dsi_disable_port(struct intel_encoder *encoder) 1141 { 1142 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1143 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1144 u32 tmp; 1145 enum port port; 1146 1147 gen11_dsi_ungate_clocks(encoder); 1148 for_each_dsi_port(port, intel_dsi->ports) { 1149 tmp = I915_READ(DDI_BUF_CTL(port)); 1150 tmp &= ~DDI_BUF_CTL_ENABLE; 1151 I915_WRITE(DDI_BUF_CTL(port), tmp); 1152 1153 if (wait_for_us((I915_READ(DDI_BUF_CTL(port)) & 1154 DDI_BUF_IS_IDLE), 1155 8)) 1156 DRM_ERROR("DDI port:%c buffer not idle\n", 1157 port_name(port)); 1158 } 1159 gen11_dsi_gate_clocks(encoder); 1160 } 1161 1162 static void gen11_dsi_disable_io_power(struct intel_encoder *encoder) 1163 { 1164 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1165 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1166 enum port port; 1167 u32 tmp; 1168 1169 for_each_dsi_port(port, intel_dsi->ports) { 1170 intel_wakeref_t wakeref; 1171 1172 wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]); 1173 intel_display_power_put(dev_priv, 1174 port == PORT_A ? 1175 POWER_DOMAIN_PORT_DDI_A_IO : 1176 POWER_DOMAIN_PORT_DDI_B_IO, 1177 wakeref); 1178 } 1179 1180 /* set mode to DDI */ 1181 for_each_dsi_port(port, intel_dsi->ports) { 1182 tmp = I915_READ(ICL_DSI_IO_MODECTL(port)); 1183 tmp &= ~COMBO_PHY_MODE_DSI; 1184 I915_WRITE(ICL_DSI_IO_MODECTL(port), tmp); 1185 } 1186 } 1187 1188 static void gen11_dsi_disable(struct intel_encoder *encoder, 1189 const struct intel_crtc_state *old_crtc_state, 1190 const struct drm_connector_state *old_conn_state) 1191 { 1192 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1193 1194 /* step1: turn off backlight */ 1195 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF); 1196 intel_panel_disable_backlight(old_conn_state); 1197 1198 /* step2d,e: disable transcoder and wait */ 1199 gen11_dsi_disable_transcoder(encoder); 1200 1201 /* step2f,g: powerdown panel */ 1202 gen11_dsi_powerdown_panel(encoder); 1203 1204 /* step2h,i,j: deconfig trancoder */ 1205 gen11_dsi_deconfigure_trancoder(encoder); 1206 1207 /* step3: disable port */ 1208 gen11_dsi_disable_port(encoder); 1209 1210 /* step4: disable IO power */ 1211 gen11_dsi_disable_io_power(encoder); 1212 } 1213 1214 static void gen11_dsi_get_timings(struct intel_encoder *encoder, 1215 struct intel_crtc_state *pipe_config) 1216 { 1217 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1218 struct drm_display_mode *adjusted_mode = 1219 &pipe_config->base.adjusted_mode; 1220 1221 if (intel_dsi->dual_link) { 1222 adjusted_mode->crtc_hdisplay *= 2; 1223 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) 1224 adjusted_mode->crtc_hdisplay -= 1225 intel_dsi->pixel_overlap; 1226 adjusted_mode->crtc_htotal *= 2; 1227 } 1228 adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay; 1229 adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal; 1230 1231 if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) { 1232 if (intel_dsi->dual_link) { 1233 adjusted_mode->crtc_hsync_start *= 2; 1234 adjusted_mode->crtc_hsync_end *= 2; 1235 } 1236 } 1237 adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay; 1238 adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal; 1239 } 1240 1241 static void gen11_dsi_get_config(struct intel_encoder *encoder, 1242 struct intel_crtc_state *pipe_config) 1243 { 1244 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1245 struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc); 1246 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1247 1248 /* FIXME: adapt icl_ddi_clock_get() for DSI and use that? */ 1249 pipe_config->port_clock = 1250 cnl_calc_wrpll_link(dev_priv, &pipe_config->dpll_hw_state); 1251 1252 pipe_config->base.adjusted_mode.crtc_clock = intel_dsi->pclk; 1253 if (intel_dsi->dual_link) 1254 pipe_config->base.adjusted_mode.crtc_clock *= 2; 1255 1256 gen11_dsi_get_timings(encoder, pipe_config); 1257 pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI); 1258 pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc); 1259 } 1260 1261 static int gen11_dsi_compute_config(struct intel_encoder *encoder, 1262 struct intel_crtc_state *pipe_config, 1263 struct drm_connector_state *conn_state) 1264 { 1265 struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi, 1266 base); 1267 struct intel_connector *intel_connector = intel_dsi->attached_connector; 1268 struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc); 1269 const struct drm_display_mode *fixed_mode = 1270 intel_connector->panel.fixed_mode; 1271 struct drm_display_mode *adjusted_mode = 1272 &pipe_config->base.adjusted_mode; 1273 1274 pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; 1275 intel_fixed_panel_mode(fixed_mode, adjusted_mode); 1276 intel_pch_panel_fitting(crtc, pipe_config, conn_state->scaling_mode); 1277 1278 adjusted_mode->flags = 0; 1279 1280 /* Dual link goes to trancoder DSI'0' */ 1281 if (intel_dsi->ports == BIT(PORT_B)) 1282 pipe_config->cpu_transcoder = TRANSCODER_DSI_1; 1283 else 1284 pipe_config->cpu_transcoder = TRANSCODER_DSI_0; 1285 1286 pipe_config->clock_set = true; 1287 pipe_config->port_clock = intel_dsi_bitrate(intel_dsi) / 5; 1288 1289 return 0; 1290 } 1291 1292 static void gen11_dsi_get_power_domains(struct intel_encoder *encoder, 1293 struct intel_crtc_state *crtc_state) 1294 { 1295 get_dsi_io_power_domains(to_i915(encoder->base.dev), 1296 enc_to_intel_dsi(&encoder->base)); 1297 } 1298 1299 static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder, 1300 enum pipe *pipe) 1301 { 1302 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1303 struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base); 1304 enum transcoder dsi_trans; 1305 intel_wakeref_t wakeref; 1306 enum port port; 1307 bool ret = false; 1308 u32 tmp; 1309 1310 wakeref = intel_display_power_get_if_enabled(dev_priv, 1311 encoder->power_domain); 1312 if (!wakeref) 1313 return false; 1314 1315 for_each_dsi_port(port, intel_dsi->ports) { 1316 dsi_trans = dsi_port_to_transcoder(port); 1317 tmp = I915_READ(TRANS_DDI_FUNC_CTL(dsi_trans)); 1318 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { 1319 case TRANS_DDI_EDP_INPUT_A_ON: 1320 *pipe = PIPE_A; 1321 break; 1322 case TRANS_DDI_EDP_INPUT_B_ONOFF: 1323 *pipe = PIPE_B; 1324 break; 1325 case TRANS_DDI_EDP_INPUT_C_ONOFF: 1326 *pipe = PIPE_C; 1327 break; 1328 default: 1329 DRM_ERROR("Invalid PIPE input\n"); 1330 goto out; 1331 } 1332 1333 tmp = I915_READ(PIPECONF(dsi_trans)); 1334 ret = tmp & PIPECONF_ENABLE; 1335 } 1336 out: 1337 intel_display_power_put(dev_priv, encoder->power_domain, wakeref); 1338 return ret; 1339 } 1340 1341 static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder) 1342 { 1343 intel_encoder_destroy(encoder); 1344 } 1345 1346 static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = { 1347 .destroy = gen11_dsi_encoder_destroy, 1348 }; 1349 1350 static const struct drm_connector_funcs gen11_dsi_connector_funcs = { 1351 .late_register = intel_connector_register, 1352 .early_unregister = intel_connector_unregister, 1353 .destroy = intel_connector_destroy, 1354 .fill_modes = drm_helper_probe_single_connector_modes, 1355 .atomic_get_property = intel_digital_connector_atomic_get_property, 1356 .atomic_set_property = intel_digital_connector_atomic_set_property, 1357 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 1358 .atomic_duplicate_state = intel_digital_connector_duplicate_state, 1359 }; 1360 1361 static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = { 1362 .get_modes = intel_dsi_get_modes, 1363 .mode_valid = intel_dsi_mode_valid, 1364 .atomic_check = intel_digital_connector_atomic_check, 1365 }; 1366 1367 static int gen11_dsi_host_attach(struct mipi_dsi_host *host, 1368 struct mipi_dsi_device *dsi) 1369 { 1370 return 0; 1371 } 1372 1373 static int gen11_dsi_host_detach(struct mipi_dsi_host *host, 1374 struct mipi_dsi_device *dsi) 1375 { 1376 return 0; 1377 } 1378 1379 static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host, 1380 const struct mipi_dsi_msg *msg) 1381 { 1382 struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host); 1383 struct mipi_dsi_packet dsi_pkt; 1384 ssize_t ret; 1385 bool enable_lpdt = false; 1386 1387 ret = mipi_dsi_create_packet(&dsi_pkt, msg); 1388 if (ret < 0) 1389 return ret; 1390 1391 if (msg->flags & MIPI_DSI_MSG_USE_LPM) 1392 enable_lpdt = true; 1393 1394 /* send packet header */ 1395 ret = dsi_send_pkt_hdr(intel_dsi_host, dsi_pkt, enable_lpdt); 1396 if (ret < 0) 1397 return ret; 1398 1399 /* only long packet contains payload */ 1400 if (mipi_dsi_packet_format_is_long(msg->type)) { 1401 ret = dsi_send_pkt_payld(intel_dsi_host, dsi_pkt); 1402 if (ret < 0) 1403 return ret; 1404 } 1405 1406 //TODO: add payload receive code if needed 1407 1408 ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length; 1409 1410 return ret; 1411 } 1412 1413 static const struct mipi_dsi_host_ops gen11_dsi_host_ops = { 1414 .attach = gen11_dsi_host_attach, 1415 .detach = gen11_dsi_host_detach, 1416 .transfer = gen11_dsi_host_transfer, 1417 }; 1418 1419 #define ICL_PREPARE_CNT_MAX 0x7 1420 #define ICL_CLK_ZERO_CNT_MAX 0xf 1421 #define ICL_TRAIL_CNT_MAX 0x7 1422 #define ICL_TCLK_PRE_CNT_MAX 0x3 1423 #define ICL_TCLK_POST_CNT_MAX 0x7 1424 #define ICL_HS_ZERO_CNT_MAX 0xf 1425 #define ICL_EXIT_ZERO_CNT_MAX 0x7 1426 1427 static void icl_dphy_param_init(struct intel_dsi *intel_dsi) 1428 { 1429 struct drm_device *dev = intel_dsi->base.base.dev; 1430 struct drm_i915_private *dev_priv = to_i915(dev); 1431 struct mipi_config *mipi_config = dev_priv->vbt.dsi.config; 1432 u32 tlpx_ns; 1433 u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt; 1434 u32 ths_prepare_ns, tclk_trail_ns; 1435 u32 hs_zero_cnt; 1436 u32 tclk_pre_cnt, tclk_post_cnt; 1437 1438 tlpx_ns = intel_dsi_tlpx_ns(intel_dsi); 1439 1440 tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail); 1441 ths_prepare_ns = max(mipi_config->ths_prepare, 1442 mipi_config->tclk_prepare); 1443 1444 /* 1445 * prepare cnt in escape clocks 1446 * this field represents a hexadecimal value with a precision 1447 * of 1.2 – i.e. the most significant bit is the integer 1448 * and the least significant 2 bits are fraction bits. 1449 * so, the field can represent a range of 0.25 to 1.75 1450 */ 1451 prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * 4, tlpx_ns); 1452 if (prepare_cnt > ICL_PREPARE_CNT_MAX) { 1453 DRM_DEBUG_KMS("prepare_cnt out of range (%d)\n", prepare_cnt); 1454 prepare_cnt = ICL_PREPARE_CNT_MAX; 1455 } 1456 1457 /* clk zero count in escape clocks */ 1458 clk_zero_cnt = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero - 1459 ths_prepare_ns, tlpx_ns); 1460 if (clk_zero_cnt > ICL_CLK_ZERO_CNT_MAX) { 1461 DRM_DEBUG_KMS("clk_zero_cnt out of range (%d)\n", clk_zero_cnt); 1462 clk_zero_cnt = ICL_CLK_ZERO_CNT_MAX; 1463 } 1464 1465 /* trail cnt in escape clocks*/ 1466 trail_cnt = DIV_ROUND_UP(tclk_trail_ns, tlpx_ns); 1467 if (trail_cnt > ICL_TRAIL_CNT_MAX) { 1468 DRM_DEBUG_KMS("trail_cnt out of range (%d)\n", trail_cnt); 1469 trail_cnt = ICL_TRAIL_CNT_MAX; 1470 } 1471 1472 /* tclk pre count in escape clocks */ 1473 tclk_pre_cnt = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns); 1474 if (tclk_pre_cnt > ICL_TCLK_PRE_CNT_MAX) { 1475 DRM_DEBUG_KMS("tclk_pre_cnt out of range (%d)\n", tclk_pre_cnt); 1476 tclk_pre_cnt = ICL_TCLK_PRE_CNT_MAX; 1477 } 1478 1479 /* tclk post count in escape clocks */ 1480 tclk_post_cnt = DIV_ROUND_UP(mipi_config->tclk_post, tlpx_ns); 1481 if (tclk_post_cnt > ICL_TCLK_POST_CNT_MAX) { 1482 DRM_DEBUG_KMS("tclk_post_cnt out of range (%d)\n", tclk_post_cnt); 1483 tclk_post_cnt = ICL_TCLK_POST_CNT_MAX; 1484 } 1485 1486 /* hs zero cnt in escape clocks */ 1487 hs_zero_cnt = DIV_ROUND_UP(mipi_config->ths_prepare_hszero - 1488 ths_prepare_ns, tlpx_ns); 1489 if (hs_zero_cnt > ICL_HS_ZERO_CNT_MAX) { 1490 DRM_DEBUG_KMS("hs_zero_cnt out of range (%d)\n", hs_zero_cnt); 1491 hs_zero_cnt = ICL_HS_ZERO_CNT_MAX; 1492 } 1493 1494 /* hs exit zero cnt in escape clocks */ 1495 exit_zero_cnt = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns); 1496 if (exit_zero_cnt > ICL_EXIT_ZERO_CNT_MAX) { 1497 DRM_DEBUG_KMS("exit_zero_cnt out of range (%d)\n", exit_zero_cnt); 1498 exit_zero_cnt = ICL_EXIT_ZERO_CNT_MAX; 1499 } 1500 1501 /* clock lane dphy timings */ 1502 intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE | 1503 CLK_PREPARE(prepare_cnt) | 1504 CLK_ZERO_OVERRIDE | 1505 CLK_ZERO(clk_zero_cnt) | 1506 CLK_PRE_OVERRIDE | 1507 CLK_PRE(tclk_pre_cnt) | 1508 CLK_POST_OVERRIDE | 1509 CLK_POST(tclk_post_cnt) | 1510 CLK_TRAIL_OVERRIDE | 1511 CLK_TRAIL(trail_cnt)); 1512 1513 /* data lanes dphy timings */ 1514 intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE | 1515 HS_PREPARE(prepare_cnt) | 1516 HS_ZERO_OVERRIDE | 1517 HS_ZERO(hs_zero_cnt) | 1518 HS_TRAIL_OVERRIDE | 1519 HS_TRAIL(trail_cnt) | 1520 HS_EXIT_OVERRIDE | 1521 HS_EXIT(exit_zero_cnt)); 1522 1523 intel_dsi_log_params(intel_dsi); 1524 } 1525 1526 static void icl_dsi_add_properties(struct intel_connector *connector) 1527 { 1528 u32 allowed_scalers; 1529 1530 allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) | 1531 BIT(DRM_MODE_SCALE_FULLSCREEN) | 1532 BIT(DRM_MODE_SCALE_CENTER); 1533 1534 drm_connector_attach_scaling_mode_property(&connector->base, 1535 allowed_scalers); 1536 1537 connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT; 1538 1539 connector->base.display_info.panel_orientation = 1540 intel_dsi_get_panel_orientation(connector); 1541 drm_connector_init_panel_orientation_property(&connector->base, 1542 connector->panel.fixed_mode->hdisplay, 1543 connector->panel.fixed_mode->vdisplay); 1544 } 1545 1546 void icl_dsi_init(struct drm_i915_private *dev_priv) 1547 { 1548 struct drm_device *dev = &dev_priv->drm; 1549 struct intel_dsi *intel_dsi; 1550 struct intel_encoder *encoder; 1551 struct intel_connector *intel_connector; 1552 struct drm_connector *connector; 1553 struct drm_display_mode *fixed_mode; 1554 enum port port; 1555 1556 if (!intel_bios_is_dsi_present(dev_priv, &port)) 1557 return; 1558 1559 intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); 1560 if (!intel_dsi) 1561 return; 1562 1563 intel_connector = intel_connector_alloc(); 1564 if (!intel_connector) { 1565 kfree(intel_dsi); 1566 return; 1567 } 1568 1569 encoder = &intel_dsi->base; 1570 intel_dsi->attached_connector = intel_connector; 1571 connector = &intel_connector->base; 1572 1573 /* register DSI encoder with DRM subsystem */ 1574 drm_encoder_init(dev, &encoder->base, &gen11_dsi_encoder_funcs, 1575 DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port)); 1576 1577 encoder->pre_pll_enable = gen11_dsi_pre_pll_enable; 1578 encoder->pre_enable = gen11_dsi_pre_enable; 1579 encoder->disable = gen11_dsi_disable; 1580 encoder->port = port; 1581 encoder->get_config = gen11_dsi_get_config; 1582 encoder->update_pipe = intel_panel_update_backlight; 1583 encoder->compute_config = gen11_dsi_compute_config; 1584 encoder->get_hw_state = gen11_dsi_get_hw_state; 1585 encoder->type = INTEL_OUTPUT_DSI; 1586 encoder->cloneable = 0; 1587 encoder->crtc_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C); 1588 encoder->power_domain = POWER_DOMAIN_PORT_DSI; 1589 encoder->get_power_domains = gen11_dsi_get_power_domains; 1590 1591 /* register DSI connector with DRM subsystem */ 1592 drm_connector_init(dev, connector, &gen11_dsi_connector_funcs, 1593 DRM_MODE_CONNECTOR_DSI); 1594 drm_connector_helper_add(connector, &gen11_dsi_connector_helper_funcs); 1595 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 1596 connector->interlace_allowed = false; 1597 connector->doublescan_allowed = false; 1598 intel_connector->get_hw_state = intel_connector_get_hw_state; 1599 1600 /* attach connector to encoder */ 1601 intel_connector_attach_encoder(intel_connector, encoder); 1602 1603 mutex_lock(&dev->mode_config.mutex); 1604 fixed_mode = intel_panel_vbt_fixed_mode(intel_connector); 1605 mutex_unlock(&dev->mode_config.mutex); 1606 1607 if (!fixed_mode) { 1608 DRM_ERROR("DSI fixed mode info missing\n"); 1609 goto err; 1610 } 1611 1612 intel_panel_init(&intel_connector->panel, fixed_mode, NULL); 1613 intel_panel_setup_backlight(connector, INVALID_PIPE); 1614 1615 if (dev_priv->vbt.dsi.config->dual_link) 1616 intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B); 1617 else 1618 intel_dsi->ports = BIT(port); 1619 1620 intel_dsi->dcs_backlight_ports = dev_priv->vbt.dsi.bl_ports; 1621 intel_dsi->dcs_cabc_ports = dev_priv->vbt.dsi.cabc_ports; 1622 1623 for_each_dsi_port(port, intel_dsi->ports) { 1624 struct intel_dsi_host *host; 1625 1626 host = intel_dsi_host_init(intel_dsi, &gen11_dsi_host_ops, port); 1627 if (!host) 1628 goto err; 1629 1630 intel_dsi->dsi_hosts[port] = host; 1631 } 1632 1633 if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) { 1634 DRM_DEBUG_KMS("no device found\n"); 1635 goto err; 1636 } 1637 1638 icl_dphy_param_init(intel_dsi); 1639 1640 icl_dsi_add_properties(intel_connector); 1641 return; 1642 1643 err: 1644 drm_encoder_cleanup(&encoder->base); 1645 kfree(intel_dsi); 1646 kfree(intel_connector); 1647 } 1648