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_backlight.h" 33 #include "intel_combo_phy.h" 34 #include "intel_connector.h" 35 #include "intel_crtc.h" 36 #include "intel_ddi.h" 37 #include "intel_de.h" 38 #include "intel_dsi.h" 39 #include "intel_panel.h" 40 #include "intel_vdsc.h" 41 #include "skl_scaler.h" 42 #include "skl_universal_plane.h" 43 44 static int header_credits_available(struct drm_i915_private *dev_priv, 45 enum transcoder dsi_trans) 46 { 47 return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK) 48 >> FREE_HEADER_CREDIT_SHIFT; 49 } 50 51 static int payload_credits_available(struct drm_i915_private *dev_priv, 52 enum transcoder dsi_trans) 53 { 54 return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK) 55 >> FREE_PLOAD_CREDIT_SHIFT; 56 } 57 58 static bool wait_for_header_credits(struct drm_i915_private *dev_priv, 59 enum transcoder dsi_trans, int hdr_credit) 60 { 61 if (wait_for_us(header_credits_available(dev_priv, dsi_trans) >= 62 hdr_credit, 100)) { 63 drm_err(&dev_priv->drm, "DSI header credits not released\n"); 64 return false; 65 } 66 67 return true; 68 } 69 70 static bool wait_for_payload_credits(struct drm_i915_private *dev_priv, 71 enum transcoder dsi_trans, int payld_credit) 72 { 73 if (wait_for_us(payload_credits_available(dev_priv, dsi_trans) >= 74 payld_credit, 100)) { 75 drm_err(&dev_priv->drm, "DSI payload credits not released\n"); 76 return false; 77 } 78 79 return true; 80 } 81 82 static enum transcoder dsi_port_to_transcoder(enum port port) 83 { 84 if (port == PORT_A) 85 return TRANSCODER_DSI_0; 86 else 87 return TRANSCODER_DSI_1; 88 } 89 90 static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder) 91 { 92 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 93 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 94 struct mipi_dsi_device *dsi; 95 enum port port; 96 enum transcoder dsi_trans; 97 int ret; 98 99 /* wait for header/payload credits to be released */ 100 for_each_dsi_port(port, intel_dsi->ports) { 101 dsi_trans = dsi_port_to_transcoder(port); 102 wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT); 103 wait_for_payload_credits(dev_priv, dsi_trans, MAX_PLOAD_CREDIT); 104 } 105 106 /* send nop DCS command */ 107 for_each_dsi_port(port, intel_dsi->ports) { 108 dsi = intel_dsi->dsi_hosts[port]->device; 109 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 110 dsi->channel = 0; 111 ret = mipi_dsi_dcs_nop(dsi); 112 if (ret < 0) 113 drm_err(&dev_priv->drm, 114 "error sending DCS NOP command\n"); 115 } 116 117 /* wait for header credits to be released */ 118 for_each_dsi_port(port, intel_dsi->ports) { 119 dsi_trans = dsi_port_to_transcoder(port); 120 wait_for_header_credits(dev_priv, dsi_trans, MAX_HEADER_CREDIT); 121 } 122 123 /* wait for LP TX in progress bit to be cleared */ 124 for_each_dsi_port(port, intel_dsi->ports) { 125 dsi_trans = dsi_port_to_transcoder(port); 126 if (wait_for_us(!(intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) & 127 LPTX_IN_PROGRESS), 20)) 128 drm_err(&dev_priv->drm, "LPTX bit not cleared\n"); 129 } 130 } 131 132 static int dsi_send_pkt_payld(struct intel_dsi_host *host, 133 const struct mipi_dsi_packet *packet) 134 { 135 struct intel_dsi *intel_dsi = host->intel_dsi; 136 struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev); 137 enum transcoder dsi_trans = dsi_port_to_transcoder(host->port); 138 const u8 *data = packet->payload; 139 u32 len = packet->payload_length; 140 int i, j; 141 142 /* payload queue can accept *256 bytes*, check limit */ 143 if (len > MAX_PLOAD_CREDIT * 4) { 144 drm_err(&i915->drm, "payload size exceeds max queue limit\n"); 145 return -EINVAL; 146 } 147 148 for (i = 0; i < len; i += 4) { 149 u32 tmp = 0; 150 151 if (!wait_for_payload_credits(i915, dsi_trans, 1)) 152 return -EBUSY; 153 154 for (j = 0; j < min_t(u32, len - i, 4); j++) 155 tmp |= *data++ << 8 * j; 156 157 intel_de_write(i915, DSI_CMD_TXPYLD(dsi_trans), tmp); 158 } 159 160 return 0; 161 } 162 163 static int dsi_send_pkt_hdr(struct intel_dsi_host *host, 164 const struct mipi_dsi_packet *packet, 165 bool enable_lpdt) 166 { 167 struct intel_dsi *intel_dsi = host->intel_dsi; 168 struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev); 169 enum transcoder dsi_trans = dsi_port_to_transcoder(host->port); 170 u32 tmp; 171 172 if (!wait_for_header_credits(dev_priv, dsi_trans, 1)) 173 return -EBUSY; 174 175 tmp = intel_de_read(dev_priv, DSI_CMD_TXHDR(dsi_trans)); 176 177 if (packet->payload) 178 tmp |= PAYLOAD_PRESENT; 179 else 180 tmp &= ~PAYLOAD_PRESENT; 181 182 tmp &= ~VBLANK_FENCE; 183 184 if (enable_lpdt) 185 tmp |= LP_DATA_TRANSFER; 186 187 tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK); 188 tmp |= ((packet->header[0] & VC_MASK) << VC_SHIFT); 189 tmp |= ((packet->header[0] & DT_MASK) << DT_SHIFT); 190 tmp |= (packet->header[1] << PARAM_WC_LOWER_SHIFT); 191 tmp |= (packet->header[2] << PARAM_WC_UPPER_SHIFT); 192 intel_de_write(dev_priv, DSI_CMD_TXHDR(dsi_trans), tmp); 193 194 return 0; 195 } 196 197 void icl_dsi_frame_update(struct intel_crtc_state *crtc_state) 198 { 199 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 200 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 201 u32 tmp, mode_flags; 202 enum port port; 203 204 mode_flags = crtc_state->mode_flags; 205 206 /* 207 * case 1 also covers dual link 208 * In case of dual link, frame update should be set on 209 * DSI_0 210 */ 211 if (mode_flags & I915_MODE_FLAG_DSI_USE_TE0) 212 port = PORT_A; 213 else if (mode_flags & I915_MODE_FLAG_DSI_USE_TE1) 214 port = PORT_B; 215 else 216 return; 217 218 tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port)); 219 tmp |= DSI_FRAME_UPDATE_REQUEST; 220 intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp); 221 } 222 223 static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder) 224 { 225 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 226 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 227 enum phy phy; 228 u32 tmp; 229 int lane; 230 231 for_each_dsi_phy(phy, intel_dsi->phys) { 232 /* 233 * Program voltage swing and pre-emphasis level values as per 234 * table in BSPEC under DDI buffer programing 235 */ 236 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy)); 237 tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK); 238 tmp |= SCALING_MODE_SEL(0x2); 239 tmp |= TAP2_DISABLE | TAP3_DISABLE; 240 tmp |= RTERM_SELECT(0x6); 241 intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp); 242 243 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy)); 244 tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK); 245 tmp |= SCALING_MODE_SEL(0x2); 246 tmp |= TAP2_DISABLE | TAP3_DISABLE; 247 tmp |= RTERM_SELECT(0x6); 248 intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp); 249 250 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy)); 251 tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 252 RCOMP_SCALAR_MASK); 253 tmp |= SWING_SEL_UPPER(0x2); 254 tmp |= SWING_SEL_LOWER(0x2); 255 tmp |= RCOMP_SCALAR(0x98); 256 intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp); 257 258 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy)); 259 tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 260 RCOMP_SCALAR_MASK); 261 tmp |= SWING_SEL_UPPER(0x2); 262 tmp |= SWING_SEL_LOWER(0x2); 263 tmp |= RCOMP_SCALAR(0x98); 264 intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp); 265 266 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy)); 267 tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 268 CURSOR_COEFF_MASK); 269 tmp |= POST_CURSOR_1(0x0); 270 tmp |= POST_CURSOR_2(0x0); 271 tmp |= CURSOR_COEFF(0x3f); 272 intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp); 273 274 for (lane = 0; lane <= 3; lane++) { 275 /* Bspec: must not use GRP register for write */ 276 tmp = intel_de_read(dev_priv, 277 ICL_PORT_TX_DW4_LN(lane, phy)); 278 tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 279 CURSOR_COEFF_MASK); 280 tmp |= POST_CURSOR_1(0x0); 281 tmp |= POST_CURSOR_2(0x0); 282 tmp |= CURSOR_COEFF(0x3f); 283 intel_de_write(dev_priv, 284 ICL_PORT_TX_DW4_LN(lane, phy), tmp); 285 } 286 } 287 } 288 289 static void configure_dual_link_mode(struct intel_encoder *encoder, 290 const struct intel_crtc_state *pipe_config) 291 { 292 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 293 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 294 u32 dss_ctl1; 295 296 dss_ctl1 = intel_de_read(dev_priv, DSS_CTL1); 297 dss_ctl1 |= SPLITTER_ENABLE; 298 dss_ctl1 &= ~OVERLAP_PIXELS_MASK; 299 dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap); 300 301 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { 302 const struct drm_display_mode *adjusted_mode = 303 &pipe_config->hw.adjusted_mode; 304 u32 dss_ctl2; 305 u16 hactive = adjusted_mode->crtc_hdisplay; 306 u16 dl_buffer_depth; 307 308 dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE; 309 dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap; 310 311 if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH) 312 drm_err(&dev_priv->drm, 313 "DL buffer depth exceed max value\n"); 314 315 dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK; 316 dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); 317 dss_ctl2 = intel_de_read(dev_priv, DSS_CTL2); 318 dss_ctl2 &= ~RIGHT_DL_BUF_TARGET_DEPTH_MASK; 319 dss_ctl2 |= RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); 320 intel_de_write(dev_priv, DSS_CTL2, dss_ctl2); 321 } else { 322 /* Interleave */ 323 dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE; 324 } 325 326 intel_de_write(dev_priv, DSS_CTL1, dss_ctl1); 327 } 328 329 /* aka DSI 8X clock */ 330 static int afe_clk(struct intel_encoder *encoder, 331 const struct intel_crtc_state *crtc_state) 332 { 333 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 334 int bpp; 335 336 if (crtc_state->dsc.compression_enable) 337 bpp = crtc_state->dsc.compressed_bpp; 338 else 339 bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 340 341 return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count); 342 } 343 344 static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder, 345 const struct intel_crtc_state *crtc_state) 346 { 347 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 348 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 349 enum port port; 350 int afe_clk_khz; 351 int theo_word_clk, act_word_clk; 352 u32 esc_clk_div_m, esc_clk_div_m_phy; 353 354 afe_clk_khz = afe_clk(encoder, crtc_state); 355 356 if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) { 357 theo_word_clk = DIV_ROUND_UP(afe_clk_khz, 8 * DSI_MAX_ESC_CLK); 358 act_word_clk = max(3, theo_word_clk + (theo_word_clk + 1) % 2); 359 esc_clk_div_m = act_word_clk * 8; 360 esc_clk_div_m_phy = (act_word_clk - 1) / 2; 361 } else { 362 esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK); 363 } 364 365 for_each_dsi_port(port, intel_dsi->ports) { 366 intel_de_write(dev_priv, ICL_DSI_ESC_CLK_DIV(port), 367 esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); 368 intel_de_posting_read(dev_priv, ICL_DSI_ESC_CLK_DIV(port)); 369 } 370 371 for_each_dsi_port(port, intel_dsi->ports) { 372 intel_de_write(dev_priv, ICL_DPHY_ESC_CLK_DIV(port), 373 esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); 374 intel_de_posting_read(dev_priv, ICL_DPHY_ESC_CLK_DIV(port)); 375 } 376 377 if (IS_ALDERLAKE_S(dev_priv) || IS_ALDERLAKE_P(dev_priv)) { 378 for_each_dsi_port(port, intel_dsi->ports) { 379 intel_de_write(dev_priv, ADL_MIPIO_DW(port, 8), 380 esc_clk_div_m_phy & TX_ESC_CLK_DIV_PHY); 381 intel_de_posting_read(dev_priv, ADL_MIPIO_DW(port, 8)); 382 } 383 } 384 } 385 386 static void get_dsi_io_power_domains(struct drm_i915_private *dev_priv, 387 struct intel_dsi *intel_dsi) 388 { 389 enum port port; 390 391 for_each_dsi_port(port, intel_dsi->ports) { 392 drm_WARN_ON(&dev_priv->drm, intel_dsi->io_wakeref[port]); 393 intel_dsi->io_wakeref[port] = 394 intel_display_power_get(dev_priv, 395 port == PORT_A ? 396 POWER_DOMAIN_PORT_DDI_A_IO : 397 POWER_DOMAIN_PORT_DDI_B_IO); 398 } 399 } 400 401 static void gen11_dsi_enable_io_power(struct intel_encoder *encoder) 402 { 403 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 404 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 405 enum port port; 406 u32 tmp; 407 408 for_each_dsi_port(port, intel_dsi->ports) { 409 tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port)); 410 tmp |= COMBO_PHY_MODE_DSI; 411 intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp); 412 } 413 414 get_dsi_io_power_domains(dev_priv, intel_dsi); 415 } 416 417 static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder) 418 { 419 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 420 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 421 enum phy phy; 422 423 for_each_dsi_phy(phy, intel_dsi->phys) 424 intel_combo_phy_power_up_lanes(dev_priv, phy, true, 425 intel_dsi->lane_count, false); 426 } 427 428 static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder) 429 { 430 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 431 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 432 enum phy phy; 433 u32 tmp; 434 int lane; 435 436 /* Step 4b(i) set loadgen select for transmit and aux lanes */ 437 for_each_dsi_phy(phy, intel_dsi->phys) { 438 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy)); 439 tmp &= ~LOADGEN_SELECT; 440 intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp); 441 for (lane = 0; lane <= 3; lane++) { 442 tmp = intel_de_read(dev_priv, 443 ICL_PORT_TX_DW4_LN(lane, phy)); 444 tmp &= ~LOADGEN_SELECT; 445 if (lane != 2) 446 tmp |= LOADGEN_SELECT; 447 intel_de_write(dev_priv, 448 ICL_PORT_TX_DW4_LN(lane, phy), tmp); 449 } 450 } 451 452 /* Step 4b(ii) set latency optimization for transmit and aux lanes */ 453 for_each_dsi_phy(phy, intel_dsi->phys) { 454 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy)); 455 tmp &= ~FRC_LATENCY_OPTIM_MASK; 456 tmp |= FRC_LATENCY_OPTIM_VAL(0x5); 457 intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp); 458 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN(0, phy)); 459 tmp &= ~FRC_LATENCY_OPTIM_MASK; 460 tmp |= FRC_LATENCY_OPTIM_VAL(0x5); 461 intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp); 462 463 /* For EHL, TGL, set latency optimization for PCS_DW1 lanes */ 464 if (IS_JSL_EHL(dev_priv) || (DISPLAY_VER(dev_priv) >= 12)) { 465 tmp = intel_de_read(dev_priv, 466 ICL_PORT_PCS_DW1_AUX(phy)); 467 tmp &= ~LATENCY_OPTIM_MASK; 468 tmp |= LATENCY_OPTIM_VAL(0); 469 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), 470 tmp); 471 472 tmp = intel_de_read(dev_priv, 473 ICL_PORT_PCS_DW1_LN(0, phy)); 474 tmp &= ~LATENCY_OPTIM_MASK; 475 tmp |= LATENCY_OPTIM_VAL(0x1); 476 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), 477 tmp); 478 } 479 } 480 481 } 482 483 static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder) 484 { 485 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 486 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 487 u32 tmp; 488 enum phy phy; 489 490 /* clear common keeper enable bit */ 491 for_each_dsi_phy(phy, intel_dsi->phys) { 492 tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN(0, phy)); 493 tmp &= ~COMMON_KEEPER_EN; 494 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), tmp); 495 tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_AUX(phy)); 496 tmp &= ~COMMON_KEEPER_EN; 497 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), tmp); 498 } 499 500 /* 501 * Set SUS Clock Config bitfield to 11b 502 * Note: loadgen select program is done 503 * as part of lane phy sequence configuration 504 */ 505 for_each_dsi_phy(phy, intel_dsi->phys) { 506 tmp = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy)); 507 tmp |= SUS_CLOCK_CONFIG; 508 intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), tmp); 509 } 510 511 /* Clear training enable to change swing values */ 512 for_each_dsi_phy(phy, intel_dsi->phys) { 513 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy)); 514 tmp &= ~TX_TRAINING_EN; 515 intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp); 516 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy)); 517 tmp &= ~TX_TRAINING_EN; 518 intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp); 519 } 520 521 /* Program swing and de-emphasis */ 522 dsi_program_swing_and_deemphasis(encoder); 523 524 /* Set training enable to trigger update */ 525 for_each_dsi_phy(phy, intel_dsi->phys) { 526 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN(0, phy)); 527 tmp |= TX_TRAINING_EN; 528 intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp); 529 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy)); 530 tmp |= TX_TRAINING_EN; 531 intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp); 532 } 533 } 534 535 static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder) 536 { 537 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 538 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 539 u32 tmp; 540 enum port port; 541 542 for_each_dsi_port(port, intel_dsi->ports) { 543 tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port)); 544 tmp |= DDI_BUF_CTL_ENABLE; 545 intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp); 546 547 if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) & 548 DDI_BUF_IS_IDLE), 549 500)) 550 drm_err(&dev_priv->drm, "DDI port:%c buffer idle\n", 551 port_name(port)); 552 } 553 } 554 555 static void 556 gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder, 557 const struct intel_crtc_state *crtc_state) 558 { 559 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 560 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 561 u32 tmp; 562 enum port port; 563 enum phy phy; 564 565 /* Program T-INIT master registers */ 566 for_each_dsi_port(port, intel_dsi->ports) { 567 tmp = intel_de_read(dev_priv, ICL_DSI_T_INIT_MASTER(port)); 568 tmp &= ~MASTER_INIT_TIMER_MASK; 569 tmp |= intel_dsi->init_count; 570 intel_de_write(dev_priv, ICL_DSI_T_INIT_MASTER(port), tmp); 571 } 572 573 /* Program DPHY clock lanes timings */ 574 for_each_dsi_port(port, intel_dsi->ports) { 575 intel_de_write(dev_priv, DPHY_CLK_TIMING_PARAM(port), 576 intel_dsi->dphy_reg); 577 578 /* shadow register inside display core */ 579 intel_de_write(dev_priv, DSI_CLK_TIMING_PARAM(port), 580 intel_dsi->dphy_reg); 581 } 582 583 /* Program DPHY data lanes timings */ 584 for_each_dsi_port(port, intel_dsi->ports) { 585 intel_de_write(dev_priv, DPHY_DATA_TIMING_PARAM(port), 586 intel_dsi->dphy_data_lane_reg); 587 588 /* shadow register inside display core */ 589 intel_de_write(dev_priv, DSI_DATA_TIMING_PARAM(port), 590 intel_dsi->dphy_data_lane_reg); 591 } 592 593 /* 594 * If DSI link operating at or below an 800 MHz, 595 * TA_SURE should be override and programmed to 596 * a value '0' inside TA_PARAM_REGISTERS otherwise 597 * leave all fields at HW default values. 598 */ 599 if (DISPLAY_VER(dev_priv) == 11) { 600 if (afe_clk(encoder, crtc_state) <= 800000) { 601 for_each_dsi_port(port, intel_dsi->ports) { 602 tmp = intel_de_read(dev_priv, 603 DPHY_TA_TIMING_PARAM(port)); 604 tmp &= ~TA_SURE_MASK; 605 tmp |= TA_SURE_OVERRIDE | TA_SURE(0); 606 intel_de_write(dev_priv, 607 DPHY_TA_TIMING_PARAM(port), 608 tmp); 609 610 /* shadow register inside display core */ 611 tmp = intel_de_read(dev_priv, 612 DSI_TA_TIMING_PARAM(port)); 613 tmp &= ~TA_SURE_MASK; 614 tmp |= TA_SURE_OVERRIDE | TA_SURE(0); 615 intel_de_write(dev_priv, 616 DSI_TA_TIMING_PARAM(port), tmp); 617 } 618 } 619 } 620 621 if (IS_JSL_EHL(dev_priv)) { 622 for_each_dsi_phy(phy, intel_dsi->phys) { 623 tmp = intel_de_read(dev_priv, ICL_DPHY_CHKN(phy)); 624 tmp |= ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP; 625 intel_de_write(dev_priv, ICL_DPHY_CHKN(phy), tmp); 626 } 627 } 628 } 629 630 static void gen11_dsi_gate_clocks(struct intel_encoder *encoder) 631 { 632 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 633 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 634 u32 tmp; 635 enum phy phy; 636 637 mutex_lock(&dev_priv->dpll.lock); 638 tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0); 639 for_each_dsi_phy(phy, intel_dsi->phys) 640 tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 641 642 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp); 643 mutex_unlock(&dev_priv->dpll.lock); 644 } 645 646 static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder) 647 { 648 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 649 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 650 u32 tmp; 651 enum phy phy; 652 653 mutex_lock(&dev_priv->dpll.lock); 654 tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0); 655 for_each_dsi_phy(phy, intel_dsi->phys) 656 tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 657 658 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp); 659 mutex_unlock(&dev_priv->dpll.lock); 660 } 661 662 static bool gen11_dsi_is_clock_enabled(struct intel_encoder *encoder) 663 { 664 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 665 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 666 bool clock_enabled = false; 667 enum phy phy; 668 u32 tmp; 669 670 tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0); 671 672 for_each_dsi_phy(phy, intel_dsi->phys) { 673 if (!(tmp & ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy))) 674 clock_enabled = true; 675 } 676 677 return clock_enabled; 678 } 679 680 static void gen11_dsi_map_pll(struct intel_encoder *encoder, 681 const struct intel_crtc_state *crtc_state) 682 { 683 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 684 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 685 struct intel_shared_dpll *pll = crtc_state->shared_dpll; 686 enum phy phy; 687 u32 val; 688 689 mutex_lock(&dev_priv->dpll.lock); 690 691 val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0); 692 for_each_dsi_phy(phy, intel_dsi->phys) { 693 val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); 694 val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy); 695 } 696 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val); 697 698 for_each_dsi_phy(phy, intel_dsi->phys) { 699 if (DISPLAY_VER(dev_priv) >= 12) 700 val |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 701 else 702 val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 703 } 704 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val); 705 706 intel_de_posting_read(dev_priv, ICL_DPCLKA_CFGCR0); 707 708 mutex_unlock(&dev_priv->dpll.lock); 709 } 710 711 static void 712 gen11_dsi_configure_transcoder(struct intel_encoder *encoder, 713 const struct intel_crtc_state *pipe_config) 714 { 715 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 716 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 717 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); 718 enum pipe pipe = crtc->pipe; 719 u32 tmp; 720 enum port port; 721 enum transcoder dsi_trans; 722 723 for_each_dsi_port(port, intel_dsi->ports) { 724 dsi_trans = dsi_port_to_transcoder(port); 725 tmp = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)); 726 727 if (intel_dsi->eotp_pkt) 728 tmp &= ~EOTP_DISABLED; 729 else 730 tmp |= EOTP_DISABLED; 731 732 /* enable link calibration if freq > 1.5Gbps */ 733 if (afe_clk(encoder, pipe_config) >= 1500 * 1000) { 734 tmp &= ~LINK_CALIBRATION_MASK; 735 tmp |= CALIBRATION_ENABLED_INITIAL_ONLY; 736 } 737 738 /* configure continuous clock */ 739 tmp &= ~CONTINUOUS_CLK_MASK; 740 if (intel_dsi->clock_stop) 741 tmp |= CLK_ENTER_LP_AFTER_DATA; 742 else 743 tmp |= CLK_HS_CONTINUOUS; 744 745 /* configure buffer threshold limit to minimum */ 746 tmp &= ~PIX_BUF_THRESHOLD_MASK; 747 tmp |= PIX_BUF_THRESHOLD_1_4; 748 749 /* set virtual channel to '0' */ 750 tmp &= ~PIX_VIRT_CHAN_MASK; 751 tmp |= PIX_VIRT_CHAN(0); 752 753 /* program BGR transmission */ 754 if (intel_dsi->bgr_enabled) 755 tmp |= BGR_TRANSMISSION; 756 757 /* select pixel format */ 758 tmp &= ~PIX_FMT_MASK; 759 if (pipe_config->dsc.compression_enable) { 760 tmp |= PIX_FMT_COMPRESSED; 761 } else { 762 switch (intel_dsi->pixel_format) { 763 default: 764 MISSING_CASE(intel_dsi->pixel_format); 765 fallthrough; 766 case MIPI_DSI_FMT_RGB565: 767 tmp |= PIX_FMT_RGB565; 768 break; 769 case MIPI_DSI_FMT_RGB666_PACKED: 770 tmp |= PIX_FMT_RGB666_PACKED; 771 break; 772 case MIPI_DSI_FMT_RGB666: 773 tmp |= PIX_FMT_RGB666_LOOSE; 774 break; 775 case MIPI_DSI_FMT_RGB888: 776 tmp |= PIX_FMT_RGB888; 777 break; 778 } 779 } 780 781 if (DISPLAY_VER(dev_priv) >= 12) { 782 if (is_vid_mode(intel_dsi)) 783 tmp |= BLANKING_PACKET_ENABLE; 784 } 785 786 /* program DSI operation mode */ 787 if (is_vid_mode(intel_dsi)) { 788 tmp &= ~OP_MODE_MASK; 789 switch (intel_dsi->video_mode_format) { 790 default: 791 MISSING_CASE(intel_dsi->video_mode_format); 792 fallthrough; 793 case VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS: 794 tmp |= VIDEO_MODE_SYNC_EVENT; 795 break; 796 case VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE: 797 tmp |= VIDEO_MODE_SYNC_PULSE; 798 break; 799 } 800 } else { 801 /* 802 * FIXME: Retrieve this info from VBT. 803 * As per the spec when dsi transcoder is operating 804 * in TE GATE mode, TE comes from GPIO 805 * which is UTIL PIN for DSI 0. 806 * Also this GPIO would not be used for other 807 * purposes is an assumption. 808 */ 809 tmp &= ~OP_MODE_MASK; 810 tmp |= CMD_MODE_TE_GATE; 811 tmp |= TE_SOURCE_GPIO; 812 } 813 814 intel_de_write(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans), tmp); 815 } 816 817 /* enable port sync mode if dual link */ 818 if (intel_dsi->dual_link) { 819 for_each_dsi_port(port, intel_dsi->ports) { 820 dsi_trans = dsi_port_to_transcoder(port); 821 tmp = intel_de_read(dev_priv, 822 TRANS_DDI_FUNC_CTL2(dsi_trans)); 823 tmp |= PORT_SYNC_MODE_ENABLE; 824 intel_de_write(dev_priv, 825 TRANS_DDI_FUNC_CTL2(dsi_trans), tmp); 826 } 827 828 /* configure stream splitting */ 829 configure_dual_link_mode(encoder, pipe_config); 830 } 831 832 for_each_dsi_port(port, intel_dsi->ports) { 833 dsi_trans = dsi_port_to_transcoder(port); 834 835 /* select data lane width */ 836 tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans)); 837 tmp &= ~DDI_PORT_WIDTH_MASK; 838 tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count); 839 840 /* select input pipe */ 841 tmp &= ~TRANS_DDI_EDP_INPUT_MASK; 842 switch (pipe) { 843 default: 844 MISSING_CASE(pipe); 845 fallthrough; 846 case PIPE_A: 847 tmp |= TRANS_DDI_EDP_INPUT_A_ON; 848 break; 849 case PIPE_B: 850 tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF; 851 break; 852 case PIPE_C: 853 tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF; 854 break; 855 case PIPE_D: 856 tmp |= TRANS_DDI_EDP_INPUT_D_ONOFF; 857 break; 858 } 859 860 /* enable DDI buffer */ 861 tmp |= TRANS_DDI_FUNC_ENABLE; 862 intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp); 863 } 864 865 /* wait for link ready */ 866 for_each_dsi_port(port, intel_dsi->ports) { 867 dsi_trans = dsi_port_to_transcoder(port); 868 if (wait_for_us((intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)) & 869 LINK_READY), 2500)) 870 drm_err(&dev_priv->drm, "DSI link not ready\n"); 871 } 872 } 873 874 static void 875 gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, 876 const struct intel_crtc_state *crtc_state) 877 { 878 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 879 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 880 const struct drm_display_mode *adjusted_mode = 881 &crtc_state->hw.adjusted_mode; 882 enum port port; 883 enum transcoder dsi_trans; 884 /* horizontal timings */ 885 u16 htotal, hactive, hsync_start, hsync_end, hsync_size; 886 u16 hback_porch; 887 /* vertical timings */ 888 u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift; 889 int mul = 1, div = 1; 890 891 /* 892 * Adjust horizontal timings (htotal, hsync_start, hsync_end) to account 893 * for slower link speed if DSC is enabled. 894 * 895 * The compression frequency ratio is the ratio between compressed and 896 * non-compressed link speeds, and simplifies down to the ratio between 897 * compressed and non-compressed bpp. 898 */ 899 if (crtc_state->dsc.compression_enable) { 900 mul = crtc_state->dsc.compressed_bpp; 901 div = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 902 } 903 904 hactive = adjusted_mode->crtc_hdisplay; 905 906 if (is_vid_mode(intel_dsi)) 907 htotal = DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div); 908 else 909 htotal = DIV_ROUND_UP((hactive + 160) * mul, div); 910 911 hsync_start = DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div); 912 hsync_end = DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div); 913 hsync_size = hsync_end - hsync_start; 914 hback_porch = (adjusted_mode->crtc_htotal - 915 adjusted_mode->crtc_hsync_end); 916 vactive = adjusted_mode->crtc_vdisplay; 917 918 if (is_vid_mode(intel_dsi)) { 919 vtotal = adjusted_mode->crtc_vtotal; 920 } else { 921 int bpp, line_time_us, byte_clk_period_ns; 922 923 if (crtc_state->dsc.compression_enable) 924 bpp = crtc_state->dsc.compressed_bpp; 925 else 926 bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 927 928 byte_clk_period_ns = 1000000 / afe_clk(encoder, crtc_state); 929 line_time_us = (htotal * (bpp / 8) * byte_clk_period_ns) / (1000 * intel_dsi->lane_count); 930 vtotal = vactive + DIV_ROUND_UP(400, line_time_us); 931 } 932 vsync_start = adjusted_mode->crtc_vsync_start; 933 vsync_end = adjusted_mode->crtc_vsync_end; 934 vsync_shift = hsync_start - htotal / 2; 935 936 if (intel_dsi->dual_link) { 937 hactive /= 2; 938 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) 939 hactive += intel_dsi->pixel_overlap; 940 htotal /= 2; 941 } 942 943 /* minimum hactive as per bspec: 256 pixels */ 944 if (adjusted_mode->crtc_hdisplay < 256) 945 drm_err(&dev_priv->drm, "hactive is less then 256 pixels\n"); 946 947 /* if RGB666 format, then hactive must be multiple of 4 pixels */ 948 if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0) 949 drm_err(&dev_priv->drm, 950 "hactive pixels are not multiple of 4\n"); 951 952 /* program TRANS_HTOTAL register */ 953 for_each_dsi_port(port, intel_dsi->ports) { 954 dsi_trans = dsi_port_to_transcoder(port); 955 intel_de_write(dev_priv, HTOTAL(dsi_trans), 956 (hactive - 1) | ((htotal - 1) << 16)); 957 } 958 959 /* TRANS_HSYNC register to be programmed only for video mode */ 960 if (is_vid_mode(intel_dsi)) { 961 if (intel_dsi->video_mode_format == 962 VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE) { 963 /* BSPEC: hsync size should be atleast 16 pixels */ 964 if (hsync_size < 16) 965 drm_err(&dev_priv->drm, 966 "hsync size < 16 pixels\n"); 967 } 968 969 if (hback_porch < 16) 970 drm_err(&dev_priv->drm, "hback porch < 16 pixels\n"); 971 972 if (intel_dsi->dual_link) { 973 hsync_start /= 2; 974 hsync_end /= 2; 975 } 976 977 for_each_dsi_port(port, intel_dsi->ports) { 978 dsi_trans = dsi_port_to_transcoder(port); 979 intel_de_write(dev_priv, HSYNC(dsi_trans), 980 (hsync_start - 1) | ((hsync_end - 1) << 16)); 981 } 982 } 983 984 /* program TRANS_VTOTAL register */ 985 for_each_dsi_port(port, intel_dsi->ports) { 986 dsi_trans = dsi_port_to_transcoder(port); 987 /* 988 * FIXME: Programing this by assuming progressive mode, since 989 * non-interlaced info from VBT is not saved inside 990 * struct drm_display_mode. 991 * For interlace mode: program required pixel minus 2 992 */ 993 intel_de_write(dev_priv, VTOTAL(dsi_trans), 994 (vactive - 1) | ((vtotal - 1) << 16)); 995 } 996 997 if (vsync_end < vsync_start || vsync_end > vtotal) 998 drm_err(&dev_priv->drm, "Invalid vsync_end value\n"); 999 1000 if (vsync_start < vactive) 1001 drm_err(&dev_priv->drm, "vsync_start less than vactive\n"); 1002 1003 /* program TRANS_VSYNC register for video mode only */ 1004 if (is_vid_mode(intel_dsi)) { 1005 for_each_dsi_port(port, intel_dsi->ports) { 1006 dsi_trans = dsi_port_to_transcoder(port); 1007 intel_de_write(dev_priv, VSYNC(dsi_trans), 1008 (vsync_start - 1) | ((vsync_end - 1) << 16)); 1009 } 1010 } 1011 1012 /* 1013 * FIXME: It has to be programmed only for video modes and interlaced 1014 * modes. Put the check condition here once interlaced 1015 * info available as described above. 1016 * program TRANS_VSYNCSHIFT register 1017 */ 1018 if (is_vid_mode(intel_dsi)) { 1019 for_each_dsi_port(port, intel_dsi->ports) { 1020 dsi_trans = dsi_port_to_transcoder(port); 1021 intel_de_write(dev_priv, VSYNCSHIFT(dsi_trans), 1022 vsync_shift); 1023 } 1024 } 1025 1026 /* program TRANS_VBLANK register, should be same as vtotal programmed */ 1027 if (DISPLAY_VER(dev_priv) >= 12) { 1028 for_each_dsi_port(port, intel_dsi->ports) { 1029 dsi_trans = dsi_port_to_transcoder(port); 1030 intel_de_write(dev_priv, VBLANK(dsi_trans), 1031 (vactive - 1) | ((vtotal - 1) << 16)); 1032 } 1033 } 1034 } 1035 1036 static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder) 1037 { 1038 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1039 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1040 enum port port; 1041 enum transcoder dsi_trans; 1042 u32 tmp; 1043 1044 for_each_dsi_port(port, intel_dsi->ports) { 1045 dsi_trans = dsi_port_to_transcoder(port); 1046 tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans)); 1047 tmp |= PIPECONF_ENABLE; 1048 intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp); 1049 1050 /* wait for transcoder to be enabled */ 1051 if (intel_de_wait_for_set(dev_priv, PIPECONF(dsi_trans), 1052 I965_PIPECONF_ACTIVE, 10)) 1053 drm_err(&dev_priv->drm, 1054 "DSI transcoder not enabled\n"); 1055 } 1056 } 1057 1058 static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder, 1059 const struct intel_crtc_state *crtc_state) 1060 { 1061 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1062 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1063 enum port port; 1064 enum transcoder dsi_trans; 1065 u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul; 1066 1067 /* 1068 * escape clock count calculation: 1069 * BYTE_CLK_COUNT = TIME_NS/(8 * UI) 1070 * UI (nsec) = (10^6)/Bitrate 1071 * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate 1072 * ESCAPE_CLK_COUNT = TIME_NS/ESC_CLK_NS 1073 */ 1074 divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder, crtc_state) * 1000; 1075 mul = 8 * 1000000; 1076 hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul, 1077 divisor); 1078 lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor); 1079 ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor); 1080 1081 for_each_dsi_port(port, intel_dsi->ports) { 1082 dsi_trans = dsi_port_to_transcoder(port); 1083 1084 /* program hst_tx_timeout */ 1085 tmp = intel_de_read(dev_priv, DSI_HSTX_TO(dsi_trans)); 1086 tmp &= ~HSTX_TIMEOUT_VALUE_MASK; 1087 tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout); 1088 intel_de_write(dev_priv, DSI_HSTX_TO(dsi_trans), tmp); 1089 1090 /* FIXME: DSI_CALIB_TO */ 1091 1092 /* program lp_rx_host timeout */ 1093 tmp = intel_de_read(dev_priv, DSI_LPRX_HOST_TO(dsi_trans)); 1094 tmp &= ~LPRX_TIMEOUT_VALUE_MASK; 1095 tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout); 1096 intel_de_write(dev_priv, DSI_LPRX_HOST_TO(dsi_trans), tmp); 1097 1098 /* FIXME: DSI_PWAIT_TO */ 1099 1100 /* program turn around timeout */ 1101 tmp = intel_de_read(dev_priv, DSI_TA_TO(dsi_trans)); 1102 tmp &= ~TA_TIMEOUT_VALUE_MASK; 1103 tmp |= TA_TIMEOUT_VALUE(ta_timeout); 1104 intel_de_write(dev_priv, DSI_TA_TO(dsi_trans), tmp); 1105 } 1106 } 1107 1108 static void gen11_dsi_config_util_pin(struct intel_encoder *encoder, 1109 bool enable) 1110 { 1111 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1112 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1113 u32 tmp; 1114 1115 /* 1116 * used as TE i/p for DSI0, 1117 * for dual link/DSI1 TE is from slave DSI1 1118 * through GPIO. 1119 */ 1120 if (is_vid_mode(intel_dsi) || (intel_dsi->ports & BIT(PORT_B))) 1121 return; 1122 1123 tmp = intel_de_read(dev_priv, UTIL_PIN_CTL); 1124 1125 if (enable) { 1126 tmp |= UTIL_PIN_DIRECTION_INPUT; 1127 tmp |= UTIL_PIN_ENABLE; 1128 } else { 1129 tmp &= ~UTIL_PIN_ENABLE; 1130 } 1131 intel_de_write(dev_priv, UTIL_PIN_CTL, tmp); 1132 } 1133 1134 static void 1135 gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, 1136 const struct intel_crtc_state *crtc_state) 1137 { 1138 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1139 1140 /* step 4a: power up all lanes of the DDI used by DSI */ 1141 gen11_dsi_power_up_lanes(encoder); 1142 1143 /* step 4b: configure lane sequencing of the Combo-PHY transmitters */ 1144 gen11_dsi_config_phy_lanes_sequence(encoder); 1145 1146 /* step 4c: configure voltage swing and skew */ 1147 gen11_dsi_voltage_swing_program_seq(encoder); 1148 1149 /* enable DDI buffer */ 1150 gen11_dsi_enable_ddi_buffer(encoder); 1151 1152 /* setup D-PHY timings */ 1153 gen11_dsi_setup_dphy_timings(encoder, crtc_state); 1154 1155 /* Since transcoder is configured to take events from GPIO */ 1156 gen11_dsi_config_util_pin(encoder, true); 1157 1158 /* step 4h: setup DSI protocol timeouts */ 1159 gen11_dsi_setup_timeouts(encoder, crtc_state); 1160 1161 /* Step (4h, 4i, 4j, 4k): Configure transcoder */ 1162 gen11_dsi_configure_transcoder(encoder, crtc_state); 1163 1164 /* Step 4l: Gate DDI clocks */ 1165 if (DISPLAY_VER(dev_priv) == 11) 1166 gen11_dsi_gate_clocks(encoder); 1167 } 1168 1169 static void gen11_dsi_powerup_panel(struct intel_encoder *encoder) 1170 { 1171 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1172 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1173 struct mipi_dsi_device *dsi; 1174 enum port port; 1175 enum transcoder dsi_trans; 1176 u32 tmp; 1177 int ret; 1178 1179 /* set maximum return packet size */ 1180 for_each_dsi_port(port, intel_dsi->ports) { 1181 dsi_trans = dsi_port_to_transcoder(port); 1182 1183 /* 1184 * FIXME: This uses the number of DW's currently in the payload 1185 * receive queue. This is probably not what we want here. 1186 */ 1187 tmp = intel_de_read(dev_priv, DSI_CMD_RXCTL(dsi_trans)); 1188 tmp &= NUMBER_RX_PLOAD_DW_MASK; 1189 /* multiply "Number Rx Payload DW" by 4 to get max value */ 1190 tmp = tmp * 4; 1191 dsi = intel_dsi->dsi_hosts[port]->device; 1192 ret = mipi_dsi_set_maximum_return_packet_size(dsi, tmp); 1193 if (ret < 0) 1194 drm_err(&dev_priv->drm, 1195 "error setting max return pkt size%d\n", tmp); 1196 } 1197 1198 /* panel power on related mipi dsi vbt sequences */ 1199 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON); 1200 intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay); 1201 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET); 1202 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP); 1203 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON); 1204 1205 /* ensure all panel commands dispatched before enabling transcoder */ 1206 wait_for_cmds_dispatched_to_panel(encoder); 1207 } 1208 1209 static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state, 1210 struct intel_encoder *encoder, 1211 const struct intel_crtc_state *crtc_state, 1212 const struct drm_connector_state *conn_state) 1213 { 1214 /* step2: enable IO power */ 1215 gen11_dsi_enable_io_power(encoder); 1216 1217 /* step3: enable DSI PLL */ 1218 gen11_dsi_program_esc_clk_div(encoder, crtc_state); 1219 } 1220 1221 static void gen11_dsi_pre_enable(struct intel_atomic_state *state, 1222 struct intel_encoder *encoder, 1223 const struct intel_crtc_state *pipe_config, 1224 const struct drm_connector_state *conn_state) 1225 { 1226 /* step3b */ 1227 gen11_dsi_map_pll(encoder, pipe_config); 1228 1229 /* step4: enable DSI port and DPHY */ 1230 gen11_dsi_enable_port_and_phy(encoder, pipe_config); 1231 1232 /* step5: program and powerup panel */ 1233 gen11_dsi_powerup_panel(encoder); 1234 1235 intel_dsc_enable(encoder, pipe_config); 1236 1237 /* step6c: configure transcoder timings */ 1238 gen11_dsi_set_transcoder_timings(encoder, pipe_config); 1239 } 1240 1241 /* 1242 * Wa_1409054076:icl,jsl,ehl 1243 * When pipe A is disabled and MIPI DSI is enabled on pipe B, 1244 * the AMT KVMR feature will incorrectly see pipe A as enabled. 1245 * Set 0x42080 bit 23=1 before enabling DSI on pipe B and leave 1246 * it set while DSI is enabled on pipe B 1247 */ 1248 static void icl_apply_kvmr_pipe_a_wa(struct intel_encoder *encoder, 1249 enum pipe pipe, bool enable) 1250 { 1251 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1252 1253 if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B) 1254 intel_de_rmw(dev_priv, CHICKEN_PAR1_1, 1255 IGNORE_KVMR_PIPE_A, 1256 enable ? IGNORE_KVMR_PIPE_A : 0); 1257 } 1258 1259 /* 1260 * Wa_16012360555:adl-p 1261 * SW will have to program the "LP to HS Wakeup Guardband" 1262 * to account for the repeaters on the HS Request/Ready 1263 * PPI signaling between the Display engine and the DPHY. 1264 */ 1265 static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder) 1266 { 1267 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 1268 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1269 enum port port; 1270 1271 if (DISPLAY_VER(i915) == 13) { 1272 for_each_dsi_port(port, intel_dsi->ports) 1273 intel_de_rmw(i915, TGL_DSI_CHKN_REG(port), 1274 TGL_DSI_CHKN_LSHS_GB, 0x4); 1275 } 1276 } 1277 1278 static void gen11_dsi_enable(struct intel_atomic_state *state, 1279 struct intel_encoder *encoder, 1280 const struct intel_crtc_state *crtc_state, 1281 const struct drm_connector_state *conn_state) 1282 { 1283 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1284 struct intel_crtc *crtc = to_intel_crtc(conn_state->crtc); 1285 1286 drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder); 1287 1288 /* Wa_1409054076:icl,jsl,ehl */ 1289 icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, true); 1290 1291 /* Wa_16012360555:adl-p */ 1292 adlp_set_lp_hs_wakeup_gb(encoder); 1293 1294 /* step6d: enable dsi transcoder */ 1295 gen11_dsi_enable_transcoder(encoder); 1296 1297 /* step7: enable backlight */ 1298 intel_backlight_enable(crtc_state, conn_state); 1299 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON); 1300 1301 intel_crtc_vblank_on(crtc_state); 1302 } 1303 1304 static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder) 1305 { 1306 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1307 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1308 enum port port; 1309 enum transcoder dsi_trans; 1310 u32 tmp; 1311 1312 for_each_dsi_port(port, intel_dsi->ports) { 1313 dsi_trans = dsi_port_to_transcoder(port); 1314 1315 /* disable transcoder */ 1316 tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans)); 1317 tmp &= ~PIPECONF_ENABLE; 1318 intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp); 1319 1320 /* wait for transcoder to be disabled */ 1321 if (intel_de_wait_for_clear(dev_priv, PIPECONF(dsi_trans), 1322 I965_PIPECONF_ACTIVE, 50)) 1323 drm_err(&dev_priv->drm, 1324 "DSI trancoder not disabled\n"); 1325 } 1326 } 1327 1328 static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder) 1329 { 1330 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1331 1332 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF); 1333 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET); 1334 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF); 1335 1336 /* ensure cmds dispatched to panel */ 1337 wait_for_cmds_dispatched_to_panel(encoder); 1338 } 1339 1340 static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder) 1341 { 1342 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1343 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1344 enum port port; 1345 enum transcoder dsi_trans; 1346 u32 tmp; 1347 1348 /* disable periodic update mode */ 1349 if (is_cmd_mode(intel_dsi)) { 1350 for_each_dsi_port(port, intel_dsi->ports) { 1351 tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port)); 1352 tmp &= ~DSI_PERIODIC_FRAME_UPDATE_ENABLE; 1353 intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp); 1354 } 1355 } 1356 1357 /* put dsi link in ULPS */ 1358 for_each_dsi_port(port, intel_dsi->ports) { 1359 dsi_trans = dsi_port_to_transcoder(port); 1360 tmp = intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)); 1361 tmp |= LINK_ENTER_ULPS; 1362 tmp &= ~LINK_ULPS_TYPE_LP11; 1363 intel_de_write(dev_priv, DSI_LP_MSG(dsi_trans), tmp); 1364 1365 if (wait_for_us((intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) & 1366 LINK_IN_ULPS), 1367 10)) 1368 drm_err(&dev_priv->drm, "DSI link not in ULPS\n"); 1369 } 1370 1371 /* disable ddi function */ 1372 for_each_dsi_port(port, intel_dsi->ports) { 1373 dsi_trans = dsi_port_to_transcoder(port); 1374 tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans)); 1375 tmp &= ~TRANS_DDI_FUNC_ENABLE; 1376 intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp); 1377 } 1378 1379 /* disable port sync mode if dual link */ 1380 if (intel_dsi->dual_link) { 1381 for_each_dsi_port(port, intel_dsi->ports) { 1382 dsi_trans = dsi_port_to_transcoder(port); 1383 tmp = intel_de_read(dev_priv, 1384 TRANS_DDI_FUNC_CTL2(dsi_trans)); 1385 tmp &= ~PORT_SYNC_MODE_ENABLE; 1386 intel_de_write(dev_priv, 1387 TRANS_DDI_FUNC_CTL2(dsi_trans), tmp); 1388 } 1389 } 1390 } 1391 1392 static void gen11_dsi_disable_port(struct intel_encoder *encoder) 1393 { 1394 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1395 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1396 u32 tmp; 1397 enum port port; 1398 1399 gen11_dsi_ungate_clocks(encoder); 1400 for_each_dsi_port(port, intel_dsi->ports) { 1401 tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port)); 1402 tmp &= ~DDI_BUF_CTL_ENABLE; 1403 intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp); 1404 1405 if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) & 1406 DDI_BUF_IS_IDLE), 1407 8)) 1408 drm_err(&dev_priv->drm, 1409 "DDI port:%c buffer not idle\n", 1410 port_name(port)); 1411 } 1412 gen11_dsi_gate_clocks(encoder); 1413 } 1414 1415 static void gen11_dsi_disable_io_power(struct intel_encoder *encoder) 1416 { 1417 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1418 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1419 enum port port; 1420 u32 tmp; 1421 1422 for_each_dsi_port(port, intel_dsi->ports) { 1423 intel_wakeref_t wakeref; 1424 1425 wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]); 1426 intel_display_power_put(dev_priv, 1427 port == PORT_A ? 1428 POWER_DOMAIN_PORT_DDI_A_IO : 1429 POWER_DOMAIN_PORT_DDI_B_IO, 1430 wakeref); 1431 } 1432 1433 /* set mode to DDI */ 1434 for_each_dsi_port(port, intel_dsi->ports) { 1435 tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port)); 1436 tmp &= ~COMBO_PHY_MODE_DSI; 1437 intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp); 1438 } 1439 } 1440 1441 static void gen11_dsi_disable(struct intel_atomic_state *state, 1442 struct intel_encoder *encoder, 1443 const struct intel_crtc_state *old_crtc_state, 1444 const struct drm_connector_state *old_conn_state) 1445 { 1446 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1447 struct intel_crtc *crtc = to_intel_crtc(old_conn_state->crtc); 1448 1449 /* step1: turn off backlight */ 1450 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF); 1451 intel_backlight_disable(old_conn_state); 1452 1453 /* step2d,e: disable transcoder and wait */ 1454 gen11_dsi_disable_transcoder(encoder); 1455 1456 /* Wa_1409054076:icl,jsl,ehl */ 1457 icl_apply_kvmr_pipe_a_wa(encoder, crtc->pipe, false); 1458 1459 /* step2f,g: powerdown panel */ 1460 gen11_dsi_powerdown_panel(encoder); 1461 1462 /* step2h,i,j: deconfig trancoder */ 1463 gen11_dsi_deconfigure_trancoder(encoder); 1464 1465 /* step3: disable port */ 1466 gen11_dsi_disable_port(encoder); 1467 1468 gen11_dsi_config_util_pin(encoder, false); 1469 1470 /* step4: disable IO power */ 1471 gen11_dsi_disable_io_power(encoder); 1472 } 1473 1474 static void gen11_dsi_post_disable(struct intel_atomic_state *state, 1475 struct intel_encoder *encoder, 1476 const struct intel_crtc_state *old_crtc_state, 1477 const struct drm_connector_state *old_conn_state) 1478 { 1479 intel_crtc_vblank_off(old_crtc_state); 1480 1481 intel_dsc_disable(old_crtc_state); 1482 1483 skl_scaler_disable(old_crtc_state); 1484 } 1485 1486 static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector *connector, 1487 struct drm_display_mode *mode) 1488 { 1489 /* FIXME: DSC? */ 1490 return intel_dsi_mode_valid(connector, mode); 1491 } 1492 1493 static void gen11_dsi_get_timings(struct intel_encoder *encoder, 1494 struct intel_crtc_state *pipe_config) 1495 { 1496 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1497 struct drm_display_mode *adjusted_mode = 1498 &pipe_config->hw.adjusted_mode; 1499 1500 if (pipe_config->dsc.compressed_bpp) { 1501 int div = pipe_config->dsc.compressed_bpp; 1502 int mul = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 1503 1504 adjusted_mode->crtc_htotal = 1505 DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div); 1506 adjusted_mode->crtc_hsync_start = 1507 DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div); 1508 adjusted_mode->crtc_hsync_end = 1509 DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div); 1510 } 1511 1512 if (intel_dsi->dual_link) { 1513 adjusted_mode->crtc_hdisplay *= 2; 1514 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) 1515 adjusted_mode->crtc_hdisplay -= 1516 intel_dsi->pixel_overlap; 1517 adjusted_mode->crtc_htotal *= 2; 1518 } 1519 adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay; 1520 adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal; 1521 1522 if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) { 1523 if (intel_dsi->dual_link) { 1524 adjusted_mode->crtc_hsync_start *= 2; 1525 adjusted_mode->crtc_hsync_end *= 2; 1526 } 1527 } 1528 adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay; 1529 adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal; 1530 } 1531 1532 static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi) 1533 { 1534 struct drm_device *dev = intel_dsi->base.base.dev; 1535 struct drm_i915_private *dev_priv = to_i915(dev); 1536 enum transcoder dsi_trans; 1537 u32 val; 1538 1539 if (intel_dsi->ports == BIT(PORT_B)) 1540 dsi_trans = TRANSCODER_DSI_1; 1541 else 1542 dsi_trans = TRANSCODER_DSI_0; 1543 1544 val = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)); 1545 return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE); 1546 } 1547 1548 static void gen11_dsi_get_cmd_mode_config(struct intel_dsi *intel_dsi, 1549 struct intel_crtc_state *pipe_config) 1550 { 1551 if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A))) 1552 pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1 | 1553 I915_MODE_FLAG_DSI_USE_TE0; 1554 else if (intel_dsi->ports == BIT(PORT_B)) 1555 pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE1; 1556 else 1557 pipe_config->mode_flags |= I915_MODE_FLAG_DSI_USE_TE0; 1558 } 1559 1560 static void gen11_dsi_get_config(struct intel_encoder *encoder, 1561 struct intel_crtc_state *pipe_config) 1562 { 1563 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); 1564 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1565 1566 intel_ddi_get_clock(encoder, pipe_config, icl_ddi_combo_get_pll(encoder)); 1567 1568 pipe_config->hw.adjusted_mode.crtc_clock = intel_dsi->pclk; 1569 if (intel_dsi->dual_link) 1570 pipe_config->hw.adjusted_mode.crtc_clock *= 2; 1571 1572 gen11_dsi_get_timings(encoder, pipe_config); 1573 pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI); 1574 pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc); 1575 1576 /* Get the details on which TE should be enabled */ 1577 if (is_cmd_mode(intel_dsi)) 1578 gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config); 1579 1580 if (gen11_dsi_is_periodic_cmd_mode(intel_dsi)) 1581 pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE; 1582 } 1583 1584 static void gen11_dsi_sync_state(struct intel_encoder *encoder, 1585 const struct intel_crtc_state *crtc_state) 1586 { 1587 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1588 struct intel_crtc *intel_crtc; 1589 enum pipe pipe; 1590 1591 if (!crtc_state) 1592 return; 1593 1594 intel_crtc = to_intel_crtc(crtc_state->uapi.crtc); 1595 pipe = intel_crtc->pipe; 1596 1597 /* wa verify 1409054076:icl,jsl,ehl */ 1598 if (DISPLAY_VER(dev_priv) == 11 && pipe == PIPE_B && 1599 !(intel_de_read(dev_priv, CHICKEN_PAR1_1) & IGNORE_KVMR_PIPE_A)) 1600 drm_dbg_kms(&dev_priv->drm, 1601 "[ENCODER:%d:%s] BIOS left IGNORE_KVMR_PIPE_A cleared with pipe B enabled\n", 1602 encoder->base.base.id, 1603 encoder->base.name); 1604 } 1605 1606 static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder, 1607 struct intel_crtc_state *crtc_state) 1608 { 1609 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1610 struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1611 int dsc_max_bpc = DISPLAY_VER(dev_priv) >= 12 ? 12 : 10; 1612 bool use_dsc; 1613 int ret; 1614 1615 use_dsc = intel_bios_get_dsc_params(encoder, crtc_state, dsc_max_bpc); 1616 if (!use_dsc) 1617 return 0; 1618 1619 if (crtc_state->pipe_bpp < 8 * 3) 1620 return -EINVAL; 1621 1622 /* FIXME: split only when necessary */ 1623 if (crtc_state->dsc.slice_count > 1) 1624 crtc_state->dsc.dsc_split = true; 1625 1626 vdsc_cfg->convert_rgb = true; 1627 1628 /* FIXME: initialize from VBT */ 1629 vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST; 1630 1631 ret = intel_dsc_compute_params(encoder, crtc_state); 1632 if (ret) 1633 return ret; 1634 1635 /* DSI specific sanity checks on the common code */ 1636 drm_WARN_ON(&dev_priv->drm, vdsc_cfg->vbr_enable); 1637 drm_WARN_ON(&dev_priv->drm, vdsc_cfg->simple_422); 1638 drm_WARN_ON(&dev_priv->drm, 1639 vdsc_cfg->pic_width % vdsc_cfg->slice_width); 1640 drm_WARN_ON(&dev_priv->drm, vdsc_cfg->slice_height < 8); 1641 drm_WARN_ON(&dev_priv->drm, 1642 vdsc_cfg->pic_height % vdsc_cfg->slice_height); 1643 1644 ret = drm_dsc_compute_rc_parameters(vdsc_cfg); 1645 if (ret) 1646 return ret; 1647 1648 crtc_state->dsc.compression_enable = true; 1649 1650 return 0; 1651 } 1652 1653 static int gen11_dsi_compute_config(struct intel_encoder *encoder, 1654 struct intel_crtc_state *pipe_config, 1655 struct drm_connector_state *conn_state) 1656 { 1657 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 1658 struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi, 1659 base); 1660 struct intel_connector *intel_connector = intel_dsi->attached_connector; 1661 struct drm_display_mode *adjusted_mode = 1662 &pipe_config->hw.adjusted_mode; 1663 int ret; 1664 1665 pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; 1666 1667 ret = intel_panel_compute_config(intel_connector, adjusted_mode); 1668 if (ret) 1669 return ret; 1670 1671 ret = intel_panel_fitting(pipe_config, conn_state); 1672 if (ret) 1673 return ret; 1674 1675 adjusted_mode->flags = 0; 1676 1677 /* Dual link goes to trancoder DSI'0' */ 1678 if (intel_dsi->ports == BIT(PORT_B)) 1679 pipe_config->cpu_transcoder = TRANSCODER_DSI_1; 1680 else 1681 pipe_config->cpu_transcoder = TRANSCODER_DSI_0; 1682 1683 if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888) 1684 pipe_config->pipe_bpp = 24; 1685 else 1686 pipe_config->pipe_bpp = 18; 1687 1688 pipe_config->clock_set = true; 1689 1690 if (gen11_dsi_dsc_compute_config(encoder, pipe_config)) 1691 drm_dbg_kms(&i915->drm, "Attempting to use DSC failed\n"); 1692 1693 pipe_config->port_clock = afe_clk(encoder, pipe_config) / 5; 1694 1695 /* 1696 * In case of TE GATE cmd mode, we 1697 * receive TE from the slave if 1698 * dual link is enabled 1699 */ 1700 if (is_cmd_mode(intel_dsi)) 1701 gen11_dsi_get_cmd_mode_config(intel_dsi, pipe_config); 1702 1703 return 0; 1704 } 1705 1706 static void gen11_dsi_get_power_domains(struct intel_encoder *encoder, 1707 struct intel_crtc_state *crtc_state) 1708 { 1709 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 1710 1711 get_dsi_io_power_domains(i915, 1712 enc_to_intel_dsi(encoder)); 1713 } 1714 1715 static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder, 1716 enum pipe *pipe) 1717 { 1718 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1719 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1720 enum transcoder dsi_trans; 1721 intel_wakeref_t wakeref; 1722 enum port port; 1723 bool ret = false; 1724 u32 tmp; 1725 1726 wakeref = intel_display_power_get_if_enabled(dev_priv, 1727 encoder->power_domain); 1728 if (!wakeref) 1729 return false; 1730 1731 for_each_dsi_port(port, intel_dsi->ports) { 1732 dsi_trans = dsi_port_to_transcoder(port); 1733 tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans)); 1734 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { 1735 case TRANS_DDI_EDP_INPUT_A_ON: 1736 *pipe = PIPE_A; 1737 break; 1738 case TRANS_DDI_EDP_INPUT_B_ONOFF: 1739 *pipe = PIPE_B; 1740 break; 1741 case TRANS_DDI_EDP_INPUT_C_ONOFF: 1742 *pipe = PIPE_C; 1743 break; 1744 case TRANS_DDI_EDP_INPUT_D_ONOFF: 1745 *pipe = PIPE_D; 1746 break; 1747 default: 1748 drm_err(&dev_priv->drm, "Invalid PIPE input\n"); 1749 goto out; 1750 } 1751 1752 tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans)); 1753 ret = tmp & PIPECONF_ENABLE; 1754 } 1755 out: 1756 intel_display_power_put(dev_priv, encoder->power_domain, wakeref); 1757 return ret; 1758 } 1759 1760 static bool gen11_dsi_initial_fastset_check(struct intel_encoder *encoder, 1761 struct intel_crtc_state *crtc_state) 1762 { 1763 if (crtc_state->dsc.compression_enable) { 1764 drm_dbg_kms(encoder->base.dev, "Forcing full modeset due to DSC being enabled\n"); 1765 crtc_state->uapi.mode_changed = true; 1766 1767 return false; 1768 } 1769 1770 return true; 1771 } 1772 1773 static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder) 1774 { 1775 intel_encoder_destroy(encoder); 1776 } 1777 1778 static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = { 1779 .destroy = gen11_dsi_encoder_destroy, 1780 }; 1781 1782 static const struct drm_connector_funcs gen11_dsi_connector_funcs = { 1783 .detect = intel_panel_detect, 1784 .late_register = intel_connector_register, 1785 .early_unregister = intel_connector_unregister, 1786 .destroy = intel_connector_destroy, 1787 .fill_modes = drm_helper_probe_single_connector_modes, 1788 .atomic_get_property = intel_digital_connector_atomic_get_property, 1789 .atomic_set_property = intel_digital_connector_atomic_set_property, 1790 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 1791 .atomic_duplicate_state = intel_digital_connector_duplicate_state, 1792 }; 1793 1794 static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = { 1795 .get_modes = intel_dsi_get_modes, 1796 .mode_valid = gen11_dsi_mode_valid, 1797 .atomic_check = intel_digital_connector_atomic_check, 1798 }; 1799 1800 static int gen11_dsi_host_attach(struct mipi_dsi_host *host, 1801 struct mipi_dsi_device *dsi) 1802 { 1803 return 0; 1804 } 1805 1806 static int gen11_dsi_host_detach(struct mipi_dsi_host *host, 1807 struct mipi_dsi_device *dsi) 1808 { 1809 return 0; 1810 } 1811 1812 static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host, 1813 const struct mipi_dsi_msg *msg) 1814 { 1815 struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host); 1816 struct mipi_dsi_packet dsi_pkt; 1817 ssize_t ret; 1818 bool enable_lpdt = false; 1819 1820 ret = mipi_dsi_create_packet(&dsi_pkt, msg); 1821 if (ret < 0) 1822 return ret; 1823 1824 if (msg->flags & MIPI_DSI_MSG_USE_LPM) 1825 enable_lpdt = true; 1826 1827 /* only long packet contains payload */ 1828 if (mipi_dsi_packet_format_is_long(msg->type)) { 1829 ret = dsi_send_pkt_payld(intel_dsi_host, &dsi_pkt); 1830 if (ret < 0) 1831 return ret; 1832 } 1833 1834 /* send packet header */ 1835 ret = dsi_send_pkt_hdr(intel_dsi_host, &dsi_pkt, enable_lpdt); 1836 if (ret < 0) 1837 return ret; 1838 1839 //TODO: add payload receive code if needed 1840 1841 ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length; 1842 1843 return ret; 1844 } 1845 1846 static const struct mipi_dsi_host_ops gen11_dsi_host_ops = { 1847 .attach = gen11_dsi_host_attach, 1848 .detach = gen11_dsi_host_detach, 1849 .transfer = gen11_dsi_host_transfer, 1850 }; 1851 1852 #define ICL_PREPARE_CNT_MAX 0x7 1853 #define ICL_CLK_ZERO_CNT_MAX 0xf 1854 #define ICL_TRAIL_CNT_MAX 0x7 1855 #define ICL_TCLK_PRE_CNT_MAX 0x3 1856 #define ICL_TCLK_POST_CNT_MAX 0x7 1857 #define ICL_HS_ZERO_CNT_MAX 0xf 1858 #define ICL_EXIT_ZERO_CNT_MAX 0x7 1859 1860 static void icl_dphy_param_init(struct intel_dsi *intel_dsi) 1861 { 1862 struct drm_device *dev = intel_dsi->base.base.dev; 1863 struct drm_i915_private *dev_priv = to_i915(dev); 1864 struct mipi_config *mipi_config = dev_priv->vbt.dsi.config; 1865 u32 tlpx_ns; 1866 u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt; 1867 u32 ths_prepare_ns, tclk_trail_ns; 1868 u32 hs_zero_cnt; 1869 u32 tclk_pre_cnt, tclk_post_cnt; 1870 1871 tlpx_ns = intel_dsi_tlpx_ns(intel_dsi); 1872 1873 tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail); 1874 ths_prepare_ns = max(mipi_config->ths_prepare, 1875 mipi_config->tclk_prepare); 1876 1877 /* 1878 * prepare cnt in escape clocks 1879 * this field represents a hexadecimal value with a precision 1880 * of 1.2 – i.e. the most significant bit is the integer 1881 * and the least significant 2 bits are fraction bits. 1882 * so, the field can represent a range of 0.25 to 1.75 1883 */ 1884 prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * 4, tlpx_ns); 1885 if (prepare_cnt > ICL_PREPARE_CNT_MAX) { 1886 drm_dbg_kms(&dev_priv->drm, "prepare_cnt out of range (%d)\n", 1887 prepare_cnt); 1888 prepare_cnt = ICL_PREPARE_CNT_MAX; 1889 } 1890 1891 /* clk zero count in escape clocks */ 1892 clk_zero_cnt = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero - 1893 ths_prepare_ns, tlpx_ns); 1894 if (clk_zero_cnt > ICL_CLK_ZERO_CNT_MAX) { 1895 drm_dbg_kms(&dev_priv->drm, 1896 "clk_zero_cnt out of range (%d)\n", clk_zero_cnt); 1897 clk_zero_cnt = ICL_CLK_ZERO_CNT_MAX; 1898 } 1899 1900 /* trail cnt in escape clocks*/ 1901 trail_cnt = DIV_ROUND_UP(tclk_trail_ns, tlpx_ns); 1902 if (trail_cnt > ICL_TRAIL_CNT_MAX) { 1903 drm_dbg_kms(&dev_priv->drm, "trail_cnt out of range (%d)\n", 1904 trail_cnt); 1905 trail_cnt = ICL_TRAIL_CNT_MAX; 1906 } 1907 1908 /* tclk pre count in escape clocks */ 1909 tclk_pre_cnt = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns); 1910 if (tclk_pre_cnt > ICL_TCLK_PRE_CNT_MAX) { 1911 drm_dbg_kms(&dev_priv->drm, 1912 "tclk_pre_cnt out of range (%d)\n", tclk_pre_cnt); 1913 tclk_pre_cnt = ICL_TCLK_PRE_CNT_MAX; 1914 } 1915 1916 /* tclk post count in escape clocks */ 1917 tclk_post_cnt = DIV_ROUND_UP(mipi_config->tclk_post, tlpx_ns); 1918 if (tclk_post_cnt > ICL_TCLK_POST_CNT_MAX) { 1919 drm_dbg_kms(&dev_priv->drm, 1920 "tclk_post_cnt out of range (%d)\n", 1921 tclk_post_cnt); 1922 tclk_post_cnt = ICL_TCLK_POST_CNT_MAX; 1923 } 1924 1925 /* hs zero cnt in escape clocks */ 1926 hs_zero_cnt = DIV_ROUND_UP(mipi_config->ths_prepare_hszero - 1927 ths_prepare_ns, tlpx_ns); 1928 if (hs_zero_cnt > ICL_HS_ZERO_CNT_MAX) { 1929 drm_dbg_kms(&dev_priv->drm, "hs_zero_cnt out of range (%d)\n", 1930 hs_zero_cnt); 1931 hs_zero_cnt = ICL_HS_ZERO_CNT_MAX; 1932 } 1933 1934 /* hs exit zero cnt in escape clocks */ 1935 exit_zero_cnt = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns); 1936 if (exit_zero_cnt > ICL_EXIT_ZERO_CNT_MAX) { 1937 drm_dbg_kms(&dev_priv->drm, 1938 "exit_zero_cnt out of range (%d)\n", 1939 exit_zero_cnt); 1940 exit_zero_cnt = ICL_EXIT_ZERO_CNT_MAX; 1941 } 1942 1943 /* clock lane dphy timings */ 1944 intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE | 1945 CLK_PREPARE(prepare_cnt) | 1946 CLK_ZERO_OVERRIDE | 1947 CLK_ZERO(clk_zero_cnt) | 1948 CLK_PRE_OVERRIDE | 1949 CLK_PRE(tclk_pre_cnt) | 1950 CLK_POST_OVERRIDE | 1951 CLK_POST(tclk_post_cnt) | 1952 CLK_TRAIL_OVERRIDE | 1953 CLK_TRAIL(trail_cnt)); 1954 1955 /* data lanes dphy timings */ 1956 intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE | 1957 HS_PREPARE(prepare_cnt) | 1958 HS_ZERO_OVERRIDE | 1959 HS_ZERO(hs_zero_cnt) | 1960 HS_TRAIL_OVERRIDE | 1961 HS_TRAIL(trail_cnt) | 1962 HS_EXIT_OVERRIDE | 1963 HS_EXIT(exit_zero_cnt)); 1964 1965 intel_dsi_log_params(intel_dsi); 1966 } 1967 1968 static void icl_dsi_add_properties(struct intel_connector *connector) 1969 { 1970 u32 allowed_scalers; 1971 1972 allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) | 1973 BIT(DRM_MODE_SCALE_FULLSCREEN) | 1974 BIT(DRM_MODE_SCALE_CENTER); 1975 1976 drm_connector_attach_scaling_mode_property(&connector->base, 1977 allowed_scalers); 1978 1979 connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT; 1980 1981 drm_connector_set_panel_orientation_with_quirk(&connector->base, 1982 intel_dsi_get_panel_orientation(connector), 1983 connector->panel.fixed_mode->hdisplay, 1984 connector->panel.fixed_mode->vdisplay); 1985 } 1986 1987 void icl_dsi_init(struct drm_i915_private *dev_priv) 1988 { 1989 struct drm_device *dev = &dev_priv->drm; 1990 struct intel_dsi *intel_dsi; 1991 struct intel_encoder *encoder; 1992 struct intel_connector *intel_connector; 1993 struct drm_connector *connector; 1994 struct drm_display_mode *fixed_mode; 1995 enum port port; 1996 1997 if (!intel_bios_is_dsi_present(dev_priv, &port)) 1998 return; 1999 2000 intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); 2001 if (!intel_dsi) 2002 return; 2003 2004 intel_connector = intel_connector_alloc(); 2005 if (!intel_connector) { 2006 kfree(intel_dsi); 2007 return; 2008 } 2009 2010 encoder = &intel_dsi->base; 2011 intel_dsi->attached_connector = intel_connector; 2012 connector = &intel_connector->base; 2013 2014 /* register DSI encoder with DRM subsystem */ 2015 drm_encoder_init(dev, &encoder->base, &gen11_dsi_encoder_funcs, 2016 DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port)); 2017 2018 encoder->pre_pll_enable = gen11_dsi_pre_pll_enable; 2019 encoder->pre_enable = gen11_dsi_pre_enable; 2020 encoder->enable = gen11_dsi_enable; 2021 encoder->disable = gen11_dsi_disable; 2022 encoder->post_disable = gen11_dsi_post_disable; 2023 encoder->port = port; 2024 encoder->get_config = gen11_dsi_get_config; 2025 encoder->sync_state = gen11_dsi_sync_state; 2026 encoder->update_pipe = intel_backlight_update; 2027 encoder->compute_config = gen11_dsi_compute_config; 2028 encoder->get_hw_state = gen11_dsi_get_hw_state; 2029 encoder->initial_fastset_check = gen11_dsi_initial_fastset_check; 2030 encoder->type = INTEL_OUTPUT_DSI; 2031 encoder->cloneable = 0; 2032 encoder->pipe_mask = ~0; 2033 encoder->power_domain = POWER_DOMAIN_PORT_DSI; 2034 encoder->get_power_domains = gen11_dsi_get_power_domains; 2035 encoder->disable_clock = gen11_dsi_gate_clocks; 2036 encoder->is_clock_enabled = gen11_dsi_is_clock_enabled; 2037 2038 /* register DSI connector with DRM subsystem */ 2039 drm_connector_init(dev, connector, &gen11_dsi_connector_funcs, 2040 DRM_MODE_CONNECTOR_DSI); 2041 drm_connector_helper_add(connector, &gen11_dsi_connector_helper_funcs); 2042 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 2043 connector->interlace_allowed = false; 2044 connector->doublescan_allowed = false; 2045 intel_connector->get_hw_state = intel_connector_get_hw_state; 2046 2047 /* attach connector to encoder */ 2048 intel_connector_attach_encoder(intel_connector, encoder); 2049 2050 mutex_lock(&dev->mode_config.mutex); 2051 fixed_mode = intel_panel_vbt_fixed_mode(intel_connector); 2052 mutex_unlock(&dev->mode_config.mutex); 2053 2054 if (!fixed_mode) { 2055 drm_err(&dev_priv->drm, "DSI fixed mode info missing\n"); 2056 goto err; 2057 } 2058 2059 intel_panel_init(&intel_connector->panel, fixed_mode, NULL); 2060 intel_backlight_setup(intel_connector, INVALID_PIPE); 2061 2062 if (dev_priv->vbt.dsi.config->dual_link) 2063 intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B); 2064 else 2065 intel_dsi->ports = BIT(port); 2066 2067 intel_dsi->dcs_backlight_ports = dev_priv->vbt.dsi.bl_ports; 2068 intel_dsi->dcs_cabc_ports = dev_priv->vbt.dsi.cabc_ports; 2069 2070 for_each_dsi_port(port, intel_dsi->ports) { 2071 struct intel_dsi_host *host; 2072 2073 host = intel_dsi_host_init(intel_dsi, &gen11_dsi_host_ops, port); 2074 if (!host) 2075 goto err; 2076 2077 intel_dsi->dsi_hosts[port] = host; 2078 } 2079 2080 if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) { 2081 drm_dbg_kms(&dev_priv->drm, "no device found\n"); 2082 goto err; 2083 } 2084 2085 icl_dphy_param_init(intel_dsi); 2086 2087 icl_dsi_add_properties(intel_connector); 2088 return; 2089 2090 err: 2091 drm_connector_cleanup(connector); 2092 drm_encoder_cleanup(&encoder->base); 2093 kfree(intel_dsi); 2094 kfree(intel_connector); 2095 } 2096