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 #include "intel_vdsc.h" 38 39 static int header_credits_available(struct drm_i915_private *dev_priv, 40 enum transcoder dsi_trans) 41 { 42 return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_HEADER_CREDIT_MASK) 43 >> FREE_HEADER_CREDIT_SHIFT; 44 } 45 46 static int payload_credits_available(struct drm_i915_private *dev_priv, 47 enum transcoder dsi_trans) 48 { 49 return (intel_de_read(dev_priv, DSI_CMD_TXCTL(dsi_trans)) & FREE_PLOAD_CREDIT_MASK) 50 >> FREE_PLOAD_CREDIT_SHIFT; 51 } 52 53 static void wait_for_header_credits(struct drm_i915_private *dev_priv, 54 enum transcoder dsi_trans) 55 { 56 if (wait_for_us(header_credits_available(dev_priv, dsi_trans) >= 57 MAX_HEADER_CREDIT, 100)) 58 drm_err(&dev_priv->drm, "DSI header credits not released\n"); 59 } 60 61 static void wait_for_payload_credits(struct drm_i915_private *dev_priv, 62 enum transcoder dsi_trans) 63 { 64 if (wait_for_us(payload_credits_available(dev_priv, dsi_trans) >= 65 MAX_PLOAD_CREDIT, 100)) 66 drm_err(&dev_priv->drm, "DSI payload credits not released\n"); 67 } 68 69 static enum transcoder dsi_port_to_transcoder(enum port port) 70 { 71 if (port == PORT_A) 72 return TRANSCODER_DSI_0; 73 else 74 return TRANSCODER_DSI_1; 75 } 76 77 static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder) 78 { 79 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 80 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 81 struct mipi_dsi_device *dsi; 82 enum port port; 83 enum transcoder dsi_trans; 84 int ret; 85 86 /* wait for header/payload credits to be released */ 87 for_each_dsi_port(port, intel_dsi->ports) { 88 dsi_trans = dsi_port_to_transcoder(port); 89 wait_for_header_credits(dev_priv, dsi_trans); 90 wait_for_payload_credits(dev_priv, dsi_trans); 91 } 92 93 /* send nop DCS command */ 94 for_each_dsi_port(port, intel_dsi->ports) { 95 dsi = intel_dsi->dsi_hosts[port]->device; 96 dsi->mode_flags |= MIPI_DSI_MODE_LPM; 97 dsi->channel = 0; 98 ret = mipi_dsi_dcs_nop(dsi); 99 if (ret < 0) 100 drm_err(&dev_priv->drm, 101 "error sending DCS NOP command\n"); 102 } 103 104 /* wait for header credits to be released */ 105 for_each_dsi_port(port, intel_dsi->ports) { 106 dsi_trans = dsi_port_to_transcoder(port); 107 wait_for_header_credits(dev_priv, dsi_trans); 108 } 109 110 /* wait for LP TX in progress bit to be cleared */ 111 for_each_dsi_port(port, intel_dsi->ports) { 112 dsi_trans = dsi_port_to_transcoder(port); 113 if (wait_for_us(!(intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) & 114 LPTX_IN_PROGRESS), 20)) 115 drm_err(&dev_priv->drm, "LPTX bit not cleared\n"); 116 } 117 } 118 119 static bool add_payld_to_queue(struct intel_dsi_host *host, const u8 *data, 120 u32 len) 121 { 122 struct intel_dsi *intel_dsi = host->intel_dsi; 123 struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev); 124 enum transcoder dsi_trans = dsi_port_to_transcoder(host->port); 125 int free_credits; 126 int i, j; 127 128 for (i = 0; i < len; i += 4) { 129 u32 tmp = 0; 130 131 free_credits = payload_credits_available(dev_priv, dsi_trans); 132 if (free_credits < 1) { 133 drm_err(&dev_priv->drm, 134 "Payload credit not available\n"); 135 return false; 136 } 137 138 for (j = 0; j < min_t(u32, len - i, 4); j++) 139 tmp |= *data++ << 8 * j; 140 141 intel_de_write(dev_priv, DSI_CMD_TXPYLD(dsi_trans), tmp); 142 } 143 144 return true; 145 } 146 147 static int dsi_send_pkt_hdr(struct intel_dsi_host *host, 148 struct mipi_dsi_packet pkt, bool enable_lpdt) 149 { 150 struct intel_dsi *intel_dsi = host->intel_dsi; 151 struct drm_i915_private *dev_priv = to_i915(intel_dsi->base.base.dev); 152 enum transcoder dsi_trans = dsi_port_to_transcoder(host->port); 153 u32 tmp; 154 int free_credits; 155 156 /* check if header credit available */ 157 free_credits = header_credits_available(dev_priv, dsi_trans); 158 if (free_credits < 1) { 159 drm_err(&dev_priv->drm, 160 "send pkt header failed, not enough hdr credits\n"); 161 return -1; 162 } 163 164 tmp = intel_de_read(dev_priv, DSI_CMD_TXHDR(dsi_trans)); 165 166 if (pkt.payload) 167 tmp |= PAYLOAD_PRESENT; 168 else 169 tmp &= ~PAYLOAD_PRESENT; 170 171 tmp &= ~VBLANK_FENCE; 172 173 if (enable_lpdt) 174 tmp |= LP_DATA_TRANSFER; 175 176 tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK); 177 tmp |= ((pkt.header[0] & VC_MASK) << VC_SHIFT); 178 tmp |= ((pkt.header[0] & DT_MASK) << DT_SHIFT); 179 tmp |= (pkt.header[1] << PARAM_WC_LOWER_SHIFT); 180 tmp |= (pkt.header[2] << PARAM_WC_UPPER_SHIFT); 181 intel_de_write(dev_priv, DSI_CMD_TXHDR(dsi_trans), tmp); 182 183 return 0; 184 } 185 186 static int dsi_send_pkt_payld(struct intel_dsi_host *host, 187 struct mipi_dsi_packet pkt) 188 { 189 struct intel_dsi *intel_dsi = host->intel_dsi; 190 struct drm_i915_private *i915 = to_i915(intel_dsi->base.base.dev); 191 192 /* payload queue can accept *256 bytes*, check limit */ 193 if (pkt.payload_length > MAX_PLOAD_CREDIT * 4) { 194 drm_err(&i915->drm, "payload size exceeds max queue limit\n"); 195 return -1; 196 } 197 198 /* load data into command payload queue */ 199 if (!add_payld_to_queue(host, pkt.payload, 200 pkt.payload_length)) { 201 drm_err(&i915->drm, "adding payload to queue failed\n"); 202 return -1; 203 } 204 205 return 0; 206 } 207 208 static void dsi_program_swing_and_deemphasis(struct intel_encoder *encoder) 209 { 210 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 211 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 212 enum phy phy; 213 u32 tmp; 214 int lane; 215 216 for_each_dsi_phy(phy, intel_dsi->phys) { 217 /* 218 * Program voltage swing and pre-emphasis level values as per 219 * table in BSPEC under DDI buffer programing 220 */ 221 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN0(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 intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp); 227 228 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy)); 229 tmp &= ~(SCALING_MODE_SEL_MASK | RTERM_SELECT_MASK); 230 tmp |= SCALING_MODE_SEL(0x2); 231 tmp |= TAP2_DISABLE | TAP3_DISABLE; 232 tmp |= RTERM_SELECT(0x6); 233 intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp); 234 235 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN0(phy)); 236 tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 237 RCOMP_SCALAR_MASK); 238 tmp |= SWING_SEL_UPPER(0x2); 239 tmp |= SWING_SEL_LOWER(0x2); 240 tmp |= RCOMP_SCALAR(0x98); 241 intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp); 242 243 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy)); 244 tmp &= ~(SWING_SEL_LOWER_MASK | SWING_SEL_UPPER_MASK | 245 RCOMP_SCALAR_MASK); 246 tmp |= SWING_SEL_UPPER(0x2); 247 tmp |= SWING_SEL_LOWER(0x2); 248 tmp |= RCOMP_SCALAR(0x98); 249 intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp); 250 251 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy)); 252 tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 253 CURSOR_COEFF_MASK); 254 tmp |= POST_CURSOR_1(0x0); 255 tmp |= POST_CURSOR_2(0x0); 256 tmp |= CURSOR_COEFF(0x3f); 257 intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp); 258 259 for (lane = 0; lane <= 3; lane++) { 260 /* Bspec: must not use GRP register for write */ 261 tmp = intel_de_read(dev_priv, 262 ICL_PORT_TX_DW4_LN(lane, phy)); 263 tmp &= ~(POST_CURSOR_1_MASK | POST_CURSOR_2_MASK | 264 CURSOR_COEFF_MASK); 265 tmp |= POST_CURSOR_1(0x0); 266 tmp |= POST_CURSOR_2(0x0); 267 tmp |= CURSOR_COEFF(0x3f); 268 intel_de_write(dev_priv, 269 ICL_PORT_TX_DW4_LN(lane, phy), tmp); 270 } 271 } 272 } 273 274 static void configure_dual_link_mode(struct intel_encoder *encoder, 275 const struct intel_crtc_state *pipe_config) 276 { 277 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 278 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 279 u32 dss_ctl1; 280 281 dss_ctl1 = intel_de_read(dev_priv, DSS_CTL1); 282 dss_ctl1 |= SPLITTER_ENABLE; 283 dss_ctl1 &= ~OVERLAP_PIXELS_MASK; 284 dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap); 285 286 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) { 287 const struct drm_display_mode *adjusted_mode = 288 &pipe_config->hw.adjusted_mode; 289 u32 dss_ctl2; 290 u16 hactive = adjusted_mode->crtc_hdisplay; 291 u16 dl_buffer_depth; 292 293 dss_ctl1 &= ~DUAL_LINK_MODE_INTERLEAVE; 294 dl_buffer_depth = hactive / 2 + intel_dsi->pixel_overlap; 295 296 if (dl_buffer_depth > MAX_DL_BUFFER_TARGET_DEPTH) 297 drm_err(&dev_priv->drm, 298 "DL buffer depth exceed max value\n"); 299 300 dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK; 301 dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); 302 dss_ctl2 = intel_de_read(dev_priv, DSS_CTL2); 303 dss_ctl2 &= ~RIGHT_DL_BUF_TARGET_DEPTH_MASK; 304 dss_ctl2 |= RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); 305 intel_de_write(dev_priv, DSS_CTL2, dss_ctl2); 306 } else { 307 /* Interleave */ 308 dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE; 309 } 310 311 intel_de_write(dev_priv, DSS_CTL1, dss_ctl1); 312 } 313 314 /* aka DSI 8X clock */ 315 static int afe_clk(struct intel_encoder *encoder, 316 const struct intel_crtc_state *crtc_state) 317 { 318 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 319 int bpp; 320 321 if (crtc_state->dsc.compression_enable) 322 bpp = crtc_state->dsc.compressed_bpp; 323 else 324 bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 325 326 return DIV_ROUND_CLOSEST(intel_dsi->pclk * bpp, intel_dsi->lane_count); 327 } 328 329 static void gen11_dsi_program_esc_clk_div(struct intel_encoder *encoder, 330 const struct intel_crtc_state *crtc_state) 331 { 332 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 333 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 334 enum port port; 335 int afe_clk_khz; 336 u32 esc_clk_div_m; 337 338 afe_clk_khz = afe_clk(encoder, crtc_state); 339 esc_clk_div_m = DIV_ROUND_UP(afe_clk_khz, DSI_MAX_ESC_CLK); 340 341 for_each_dsi_port(port, intel_dsi->ports) { 342 intel_de_write(dev_priv, ICL_DSI_ESC_CLK_DIV(port), 343 esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); 344 intel_de_posting_read(dev_priv, ICL_DSI_ESC_CLK_DIV(port)); 345 } 346 347 for_each_dsi_port(port, intel_dsi->ports) { 348 intel_de_write(dev_priv, ICL_DPHY_ESC_CLK_DIV(port), 349 esc_clk_div_m & ICL_ESC_CLK_DIV_MASK); 350 intel_de_posting_read(dev_priv, ICL_DPHY_ESC_CLK_DIV(port)); 351 } 352 } 353 354 static void get_dsi_io_power_domains(struct drm_i915_private *dev_priv, 355 struct intel_dsi *intel_dsi) 356 { 357 enum port port; 358 359 for_each_dsi_port(port, intel_dsi->ports) { 360 drm_WARN_ON(&dev_priv->drm, intel_dsi->io_wakeref[port]); 361 intel_dsi->io_wakeref[port] = 362 intel_display_power_get(dev_priv, 363 port == PORT_A ? 364 POWER_DOMAIN_PORT_DDI_A_IO : 365 POWER_DOMAIN_PORT_DDI_B_IO); 366 } 367 } 368 369 static void gen11_dsi_enable_io_power(struct intel_encoder *encoder) 370 { 371 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 372 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 373 enum port port; 374 u32 tmp; 375 376 for_each_dsi_port(port, intel_dsi->ports) { 377 tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port)); 378 tmp |= COMBO_PHY_MODE_DSI; 379 intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp); 380 } 381 382 get_dsi_io_power_domains(dev_priv, intel_dsi); 383 } 384 385 static void gen11_dsi_power_up_lanes(struct intel_encoder *encoder) 386 { 387 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 388 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 389 enum phy phy; 390 391 for_each_dsi_phy(phy, intel_dsi->phys) 392 intel_combo_phy_power_up_lanes(dev_priv, phy, true, 393 intel_dsi->lane_count, false); 394 } 395 396 static void gen11_dsi_config_phy_lanes_sequence(struct intel_encoder *encoder) 397 { 398 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 399 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 400 enum phy phy; 401 u32 tmp; 402 int lane; 403 404 /* Step 4b(i) set loadgen select for transmit and aux lanes */ 405 for_each_dsi_phy(phy, intel_dsi->phys) { 406 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW4_AUX(phy)); 407 tmp &= ~LOADGEN_SELECT; 408 intel_de_write(dev_priv, ICL_PORT_TX_DW4_AUX(phy), tmp); 409 for (lane = 0; lane <= 3; lane++) { 410 tmp = intel_de_read(dev_priv, 411 ICL_PORT_TX_DW4_LN(lane, phy)); 412 tmp &= ~LOADGEN_SELECT; 413 if (lane != 2) 414 tmp |= LOADGEN_SELECT; 415 intel_de_write(dev_priv, 416 ICL_PORT_TX_DW4_LN(lane, phy), tmp); 417 } 418 } 419 420 /* Step 4b(ii) set latency optimization for transmit and aux lanes */ 421 for_each_dsi_phy(phy, intel_dsi->phys) { 422 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_AUX(phy)); 423 tmp &= ~FRC_LATENCY_OPTIM_MASK; 424 tmp |= FRC_LATENCY_OPTIM_VAL(0x5); 425 intel_de_write(dev_priv, ICL_PORT_TX_DW2_AUX(phy), tmp); 426 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW2_LN0(phy)); 427 tmp &= ~FRC_LATENCY_OPTIM_MASK; 428 tmp |= FRC_LATENCY_OPTIM_VAL(0x5); 429 intel_de_write(dev_priv, ICL_PORT_TX_DW2_GRP(phy), tmp); 430 431 /* For EHL, TGL, set latency optimization for PCS_DW1 lanes */ 432 if (IS_ELKHARTLAKE(dev_priv) || (INTEL_GEN(dev_priv) >= 12)) { 433 tmp = intel_de_read(dev_priv, 434 ICL_PORT_PCS_DW1_AUX(phy)); 435 tmp &= ~LATENCY_OPTIM_MASK; 436 tmp |= LATENCY_OPTIM_VAL(0); 437 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), 438 tmp); 439 440 tmp = intel_de_read(dev_priv, 441 ICL_PORT_PCS_DW1_LN0(phy)); 442 tmp &= ~LATENCY_OPTIM_MASK; 443 tmp |= LATENCY_OPTIM_VAL(0x1); 444 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), 445 tmp); 446 } 447 } 448 449 } 450 451 static void gen11_dsi_voltage_swing_program_seq(struct intel_encoder *encoder) 452 { 453 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 454 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 455 u32 tmp; 456 enum phy phy; 457 458 /* clear common keeper enable bit */ 459 for_each_dsi_phy(phy, intel_dsi->phys) { 460 tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_LN0(phy)); 461 tmp &= ~COMMON_KEEPER_EN; 462 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_GRP(phy), tmp); 463 tmp = intel_de_read(dev_priv, ICL_PORT_PCS_DW1_AUX(phy)); 464 tmp &= ~COMMON_KEEPER_EN; 465 intel_de_write(dev_priv, ICL_PORT_PCS_DW1_AUX(phy), tmp); 466 } 467 468 /* 469 * Set SUS Clock Config bitfield to 11b 470 * Note: loadgen select program is done 471 * as part of lane phy sequence configuration 472 */ 473 for_each_dsi_phy(phy, intel_dsi->phys) { 474 tmp = intel_de_read(dev_priv, ICL_PORT_CL_DW5(phy)); 475 tmp |= SUS_CLOCK_CONFIG; 476 intel_de_write(dev_priv, ICL_PORT_CL_DW5(phy), tmp); 477 } 478 479 /* Clear training enable to change swing values */ 480 for_each_dsi_phy(phy, intel_dsi->phys) { 481 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN0(phy)); 482 tmp &= ~TX_TRAINING_EN; 483 intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp); 484 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy)); 485 tmp &= ~TX_TRAINING_EN; 486 intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp); 487 } 488 489 /* Program swing and de-emphasis */ 490 dsi_program_swing_and_deemphasis(encoder); 491 492 /* Set training enable to trigger update */ 493 for_each_dsi_phy(phy, intel_dsi->phys) { 494 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_LN0(phy)); 495 tmp |= TX_TRAINING_EN; 496 intel_de_write(dev_priv, ICL_PORT_TX_DW5_GRP(phy), tmp); 497 tmp = intel_de_read(dev_priv, ICL_PORT_TX_DW5_AUX(phy)); 498 tmp |= TX_TRAINING_EN; 499 intel_de_write(dev_priv, ICL_PORT_TX_DW5_AUX(phy), tmp); 500 } 501 } 502 503 static void gen11_dsi_enable_ddi_buffer(struct intel_encoder *encoder) 504 { 505 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 506 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 507 u32 tmp; 508 enum port port; 509 510 for_each_dsi_port(port, intel_dsi->ports) { 511 tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port)); 512 tmp |= DDI_BUF_CTL_ENABLE; 513 intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp); 514 515 if (wait_for_us(!(intel_de_read(dev_priv, DDI_BUF_CTL(port)) & 516 DDI_BUF_IS_IDLE), 517 500)) 518 drm_err(&dev_priv->drm, "DDI port:%c buffer idle\n", 519 port_name(port)); 520 } 521 } 522 523 static void 524 gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder, 525 const struct intel_crtc_state *crtc_state) 526 { 527 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 528 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 529 u32 tmp; 530 enum port port; 531 enum phy phy; 532 533 /* Program T-INIT master registers */ 534 for_each_dsi_port(port, intel_dsi->ports) { 535 tmp = intel_de_read(dev_priv, ICL_DSI_T_INIT_MASTER(port)); 536 tmp &= ~MASTER_INIT_TIMER_MASK; 537 tmp |= intel_dsi->init_count; 538 intel_de_write(dev_priv, ICL_DSI_T_INIT_MASTER(port), tmp); 539 } 540 541 /* Program DPHY clock lanes timings */ 542 for_each_dsi_port(port, intel_dsi->ports) { 543 intel_de_write(dev_priv, DPHY_CLK_TIMING_PARAM(port), 544 intel_dsi->dphy_reg); 545 546 /* shadow register inside display core */ 547 intel_de_write(dev_priv, DSI_CLK_TIMING_PARAM(port), 548 intel_dsi->dphy_reg); 549 } 550 551 /* Program DPHY data lanes timings */ 552 for_each_dsi_port(port, intel_dsi->ports) { 553 intel_de_write(dev_priv, DPHY_DATA_TIMING_PARAM(port), 554 intel_dsi->dphy_data_lane_reg); 555 556 /* shadow register inside display core */ 557 intel_de_write(dev_priv, DSI_DATA_TIMING_PARAM(port), 558 intel_dsi->dphy_data_lane_reg); 559 } 560 561 /* 562 * If DSI link operating at or below an 800 MHz, 563 * TA_SURE should be override and programmed to 564 * a value '0' inside TA_PARAM_REGISTERS otherwise 565 * leave all fields at HW default values. 566 */ 567 if (IS_GEN(dev_priv, 11)) { 568 if (afe_clk(encoder, crtc_state) <= 800000) { 569 for_each_dsi_port(port, intel_dsi->ports) { 570 tmp = intel_de_read(dev_priv, 571 DPHY_TA_TIMING_PARAM(port)); 572 tmp &= ~TA_SURE_MASK; 573 tmp |= TA_SURE_OVERRIDE | TA_SURE(0); 574 intel_de_write(dev_priv, 575 DPHY_TA_TIMING_PARAM(port), 576 tmp); 577 578 /* shadow register inside display core */ 579 tmp = intel_de_read(dev_priv, 580 DSI_TA_TIMING_PARAM(port)); 581 tmp &= ~TA_SURE_MASK; 582 tmp |= TA_SURE_OVERRIDE | TA_SURE(0); 583 intel_de_write(dev_priv, 584 DSI_TA_TIMING_PARAM(port), tmp); 585 } 586 } 587 } 588 589 if (IS_ELKHARTLAKE(dev_priv)) { 590 for_each_dsi_phy(phy, intel_dsi->phys) { 591 tmp = intel_de_read(dev_priv, ICL_DPHY_CHKN(phy)); 592 tmp |= ICL_DPHY_CHKN_AFE_OVER_PPI_STRAP; 593 intel_de_write(dev_priv, ICL_DPHY_CHKN(phy), tmp); 594 } 595 } 596 } 597 598 static void gen11_dsi_gate_clocks(struct intel_encoder *encoder) 599 { 600 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 601 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 602 u32 tmp; 603 enum phy phy; 604 605 mutex_lock(&dev_priv->dpll.lock); 606 tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0); 607 for_each_dsi_phy(phy, intel_dsi->phys) 608 tmp |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 609 610 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp); 611 mutex_unlock(&dev_priv->dpll.lock); 612 } 613 614 static void gen11_dsi_ungate_clocks(struct intel_encoder *encoder) 615 { 616 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 617 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 618 u32 tmp; 619 enum phy phy; 620 621 mutex_lock(&dev_priv->dpll.lock); 622 tmp = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0); 623 for_each_dsi_phy(phy, intel_dsi->phys) 624 tmp &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 625 626 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, tmp); 627 mutex_unlock(&dev_priv->dpll.lock); 628 } 629 630 static void gen11_dsi_map_pll(struct intel_encoder *encoder, 631 const struct intel_crtc_state *crtc_state) 632 { 633 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 634 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 635 struct intel_shared_dpll *pll = crtc_state->shared_dpll; 636 enum phy phy; 637 u32 val; 638 639 mutex_lock(&dev_priv->dpll.lock); 640 641 val = intel_de_read(dev_priv, ICL_DPCLKA_CFGCR0); 642 for_each_dsi_phy(phy, intel_dsi->phys) { 643 val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy); 644 val |= ICL_DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, phy); 645 } 646 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val); 647 648 for_each_dsi_phy(phy, intel_dsi->phys) { 649 if (INTEL_GEN(dev_priv) >= 12) 650 val |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 651 else 652 val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); 653 } 654 intel_de_write(dev_priv, ICL_DPCLKA_CFGCR0, val); 655 656 intel_de_posting_read(dev_priv, ICL_DPCLKA_CFGCR0); 657 658 mutex_unlock(&dev_priv->dpll.lock); 659 } 660 661 static void 662 gen11_dsi_configure_transcoder(struct intel_encoder *encoder, 663 const struct intel_crtc_state *pipe_config) 664 { 665 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 666 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 667 struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->uapi.crtc); 668 enum pipe pipe = intel_crtc->pipe; 669 u32 tmp; 670 enum port port; 671 enum transcoder dsi_trans; 672 673 for_each_dsi_port(port, intel_dsi->ports) { 674 dsi_trans = dsi_port_to_transcoder(port); 675 tmp = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)); 676 677 if (intel_dsi->eotp_pkt) 678 tmp &= ~EOTP_DISABLED; 679 else 680 tmp |= EOTP_DISABLED; 681 682 /* enable link calibration if freq > 1.5Gbps */ 683 if (afe_clk(encoder, pipe_config) >= 1500 * 1000) { 684 tmp &= ~LINK_CALIBRATION_MASK; 685 tmp |= CALIBRATION_ENABLED_INITIAL_ONLY; 686 } 687 688 /* configure continuous clock */ 689 tmp &= ~CONTINUOUS_CLK_MASK; 690 if (intel_dsi->clock_stop) 691 tmp |= CLK_ENTER_LP_AFTER_DATA; 692 else 693 tmp |= CLK_HS_CONTINUOUS; 694 695 /* configure buffer threshold limit to minimum */ 696 tmp &= ~PIX_BUF_THRESHOLD_MASK; 697 tmp |= PIX_BUF_THRESHOLD_1_4; 698 699 /* set virtual channel to '0' */ 700 tmp &= ~PIX_VIRT_CHAN_MASK; 701 tmp |= PIX_VIRT_CHAN(0); 702 703 /* program BGR transmission */ 704 if (intel_dsi->bgr_enabled) 705 tmp |= BGR_TRANSMISSION; 706 707 /* select pixel format */ 708 tmp &= ~PIX_FMT_MASK; 709 if (pipe_config->dsc.compression_enable) { 710 tmp |= PIX_FMT_COMPRESSED; 711 } else { 712 switch (intel_dsi->pixel_format) { 713 default: 714 MISSING_CASE(intel_dsi->pixel_format); 715 fallthrough; 716 case MIPI_DSI_FMT_RGB565: 717 tmp |= PIX_FMT_RGB565; 718 break; 719 case MIPI_DSI_FMT_RGB666_PACKED: 720 tmp |= PIX_FMT_RGB666_PACKED; 721 break; 722 case MIPI_DSI_FMT_RGB666: 723 tmp |= PIX_FMT_RGB666_LOOSE; 724 break; 725 case MIPI_DSI_FMT_RGB888: 726 tmp |= PIX_FMT_RGB888; 727 break; 728 } 729 } 730 731 if (INTEL_GEN(dev_priv) >= 12) { 732 if (is_vid_mode(intel_dsi)) 733 tmp |= BLANKING_PACKET_ENABLE; 734 } 735 736 /* program DSI operation mode */ 737 if (is_vid_mode(intel_dsi)) { 738 tmp &= ~OP_MODE_MASK; 739 switch (intel_dsi->video_mode_format) { 740 default: 741 MISSING_CASE(intel_dsi->video_mode_format); 742 fallthrough; 743 case VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS: 744 tmp |= VIDEO_MODE_SYNC_EVENT; 745 break; 746 case VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE: 747 tmp |= VIDEO_MODE_SYNC_PULSE; 748 break; 749 } 750 } else { 751 /* 752 * FIXME: Retrieve this info from VBT. 753 * As per the spec when dsi transcoder is operating 754 * in TE GATE mode, TE comes from GPIO 755 * which is UTIL PIN for DSI 0. 756 * Also this GPIO would not be used for other 757 * purposes is an assumption. 758 */ 759 tmp &= ~OP_MODE_MASK; 760 tmp |= CMD_MODE_TE_GATE; 761 tmp |= TE_SOURCE_GPIO; 762 } 763 764 intel_de_write(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans), tmp); 765 } 766 767 /* enable port sync mode if dual link */ 768 if (intel_dsi->dual_link) { 769 for_each_dsi_port(port, intel_dsi->ports) { 770 dsi_trans = dsi_port_to_transcoder(port); 771 tmp = intel_de_read(dev_priv, 772 TRANS_DDI_FUNC_CTL2(dsi_trans)); 773 tmp |= PORT_SYNC_MODE_ENABLE; 774 intel_de_write(dev_priv, 775 TRANS_DDI_FUNC_CTL2(dsi_trans), tmp); 776 } 777 778 /* configure stream splitting */ 779 configure_dual_link_mode(encoder, pipe_config); 780 } 781 782 for_each_dsi_port(port, intel_dsi->ports) { 783 dsi_trans = dsi_port_to_transcoder(port); 784 785 /* select data lane width */ 786 tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans)); 787 tmp &= ~DDI_PORT_WIDTH_MASK; 788 tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count); 789 790 /* select input pipe */ 791 tmp &= ~TRANS_DDI_EDP_INPUT_MASK; 792 switch (pipe) { 793 default: 794 MISSING_CASE(pipe); 795 fallthrough; 796 case PIPE_A: 797 tmp |= TRANS_DDI_EDP_INPUT_A_ON; 798 break; 799 case PIPE_B: 800 tmp |= TRANS_DDI_EDP_INPUT_B_ONOFF; 801 break; 802 case PIPE_C: 803 tmp |= TRANS_DDI_EDP_INPUT_C_ONOFF; 804 break; 805 case PIPE_D: 806 tmp |= TRANS_DDI_EDP_INPUT_D_ONOFF; 807 break; 808 } 809 810 /* enable DDI buffer */ 811 tmp |= TRANS_DDI_FUNC_ENABLE; 812 intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp); 813 } 814 815 /* wait for link ready */ 816 for_each_dsi_port(port, intel_dsi->ports) { 817 dsi_trans = dsi_port_to_transcoder(port); 818 if (wait_for_us((intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)) & 819 LINK_READY), 2500)) 820 drm_err(&dev_priv->drm, "DSI link not ready\n"); 821 } 822 } 823 824 static void 825 gen11_dsi_set_transcoder_timings(struct intel_encoder *encoder, 826 const struct intel_crtc_state *crtc_state) 827 { 828 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 829 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 830 const struct drm_display_mode *adjusted_mode = 831 &crtc_state->hw.adjusted_mode; 832 enum port port; 833 enum transcoder dsi_trans; 834 /* horizontal timings */ 835 u16 htotal, hactive, hsync_start, hsync_end, hsync_size; 836 u16 hback_porch; 837 /* vertical timings */ 838 u16 vtotal, vactive, vsync_start, vsync_end, vsync_shift; 839 int mul = 1, div = 1; 840 841 /* 842 * Adjust horizontal timings (htotal, hsync_start, hsync_end) to account 843 * for slower link speed if DSC is enabled. 844 * 845 * The compression frequency ratio is the ratio between compressed and 846 * non-compressed link speeds, and simplifies down to the ratio between 847 * compressed and non-compressed bpp. 848 */ 849 if (crtc_state->dsc.compression_enable) { 850 mul = crtc_state->dsc.compressed_bpp; 851 div = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 852 } 853 854 hactive = adjusted_mode->crtc_hdisplay; 855 856 if (is_vid_mode(intel_dsi)) 857 htotal = DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div); 858 else 859 htotal = DIV_ROUND_UP((hactive + 160) * mul, div); 860 861 hsync_start = DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div); 862 hsync_end = DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div); 863 hsync_size = hsync_end - hsync_start; 864 hback_porch = (adjusted_mode->crtc_htotal - 865 adjusted_mode->crtc_hsync_end); 866 vactive = adjusted_mode->crtc_vdisplay; 867 868 if (is_vid_mode(intel_dsi)) { 869 vtotal = adjusted_mode->crtc_vtotal; 870 } else { 871 int bpp, line_time_us, byte_clk_period_ns; 872 873 if (crtc_state->dsc.compression_enable) 874 bpp = crtc_state->dsc.compressed_bpp; 875 else 876 bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 877 878 byte_clk_period_ns = 1000000 / afe_clk(encoder, crtc_state); 879 line_time_us = (htotal * (bpp / 8) * byte_clk_period_ns) / (1000 * intel_dsi->lane_count); 880 vtotal = vactive + DIV_ROUND_UP(400, line_time_us); 881 } 882 vsync_start = adjusted_mode->crtc_vsync_start; 883 vsync_end = adjusted_mode->crtc_vsync_end; 884 vsync_shift = hsync_start - htotal / 2; 885 886 if (intel_dsi->dual_link) { 887 hactive /= 2; 888 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) 889 hactive += intel_dsi->pixel_overlap; 890 htotal /= 2; 891 } 892 893 /* minimum hactive as per bspec: 256 pixels */ 894 if (adjusted_mode->crtc_hdisplay < 256) 895 drm_err(&dev_priv->drm, "hactive is less then 256 pixels\n"); 896 897 /* if RGB666 format, then hactive must be multiple of 4 pixels */ 898 if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB666 && hactive % 4 != 0) 899 drm_err(&dev_priv->drm, 900 "hactive pixels are not multiple of 4\n"); 901 902 /* program TRANS_HTOTAL register */ 903 for_each_dsi_port(port, intel_dsi->ports) { 904 dsi_trans = dsi_port_to_transcoder(port); 905 intel_de_write(dev_priv, HTOTAL(dsi_trans), 906 (hactive - 1) | ((htotal - 1) << 16)); 907 } 908 909 /* TRANS_HSYNC register to be programmed only for video mode */ 910 if (is_vid_mode(intel_dsi)) { 911 if (intel_dsi->video_mode_format == 912 VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE) { 913 /* BSPEC: hsync size should be atleast 16 pixels */ 914 if (hsync_size < 16) 915 drm_err(&dev_priv->drm, 916 "hsync size < 16 pixels\n"); 917 } 918 919 if (hback_porch < 16) 920 drm_err(&dev_priv->drm, "hback porch < 16 pixels\n"); 921 922 if (intel_dsi->dual_link) { 923 hsync_start /= 2; 924 hsync_end /= 2; 925 } 926 927 for_each_dsi_port(port, intel_dsi->ports) { 928 dsi_trans = dsi_port_to_transcoder(port); 929 intel_de_write(dev_priv, HSYNC(dsi_trans), 930 (hsync_start - 1) | ((hsync_end - 1) << 16)); 931 } 932 } 933 934 /* program TRANS_VTOTAL register */ 935 for_each_dsi_port(port, intel_dsi->ports) { 936 dsi_trans = dsi_port_to_transcoder(port); 937 /* 938 * FIXME: Programing this by assuming progressive mode, since 939 * non-interlaced info from VBT is not saved inside 940 * struct drm_display_mode. 941 * For interlace mode: program required pixel minus 2 942 */ 943 intel_de_write(dev_priv, VTOTAL(dsi_trans), 944 (vactive - 1) | ((vtotal - 1) << 16)); 945 } 946 947 if (vsync_end < vsync_start || vsync_end > vtotal) 948 drm_err(&dev_priv->drm, "Invalid vsync_end value\n"); 949 950 if (vsync_start < vactive) 951 drm_err(&dev_priv->drm, "vsync_start less than vactive\n"); 952 953 /* program TRANS_VSYNC register for video mode only */ 954 if (is_vid_mode(intel_dsi)) { 955 for_each_dsi_port(port, intel_dsi->ports) { 956 dsi_trans = dsi_port_to_transcoder(port); 957 intel_de_write(dev_priv, VSYNC(dsi_trans), 958 (vsync_start - 1) | ((vsync_end - 1) << 16)); 959 } 960 } 961 962 /* 963 * FIXME: It has to be programmed only for video modes and interlaced 964 * modes. Put the check condition here once interlaced 965 * info available as described above. 966 * program TRANS_VSYNCSHIFT register 967 */ 968 if (is_vid_mode(intel_dsi)) { 969 for_each_dsi_port(port, intel_dsi->ports) { 970 dsi_trans = dsi_port_to_transcoder(port); 971 intel_de_write(dev_priv, VSYNCSHIFT(dsi_trans), 972 vsync_shift); 973 } 974 } 975 976 /* program TRANS_VBLANK register, should be same as vtotal programmed */ 977 if (INTEL_GEN(dev_priv) >= 12) { 978 for_each_dsi_port(port, intel_dsi->ports) { 979 dsi_trans = dsi_port_to_transcoder(port); 980 intel_de_write(dev_priv, VBLANK(dsi_trans), 981 (vactive - 1) | ((vtotal - 1) << 16)); 982 } 983 } 984 } 985 986 static void gen11_dsi_enable_transcoder(struct intel_encoder *encoder) 987 { 988 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 989 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 990 enum port port; 991 enum transcoder dsi_trans; 992 u32 tmp; 993 994 for_each_dsi_port(port, intel_dsi->ports) { 995 dsi_trans = dsi_port_to_transcoder(port); 996 tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans)); 997 tmp |= PIPECONF_ENABLE; 998 intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp); 999 1000 /* wait for transcoder to be enabled */ 1001 if (intel_de_wait_for_set(dev_priv, PIPECONF(dsi_trans), 1002 I965_PIPECONF_ACTIVE, 10)) 1003 drm_err(&dev_priv->drm, 1004 "DSI transcoder not enabled\n"); 1005 } 1006 } 1007 1008 static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder, 1009 const struct intel_crtc_state *crtc_state) 1010 { 1011 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1012 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1013 enum port port; 1014 enum transcoder dsi_trans; 1015 u32 tmp, hs_tx_timeout, lp_rx_timeout, ta_timeout, divisor, mul; 1016 1017 /* 1018 * escape clock count calculation: 1019 * BYTE_CLK_COUNT = TIME_NS/(8 * UI) 1020 * UI (nsec) = (10^6)/Bitrate 1021 * TIME_NS = (BYTE_CLK_COUNT * 8 * 10^6)/ Bitrate 1022 * ESCAPE_CLK_COUNT = TIME_NS/ESC_CLK_NS 1023 */ 1024 divisor = intel_dsi_tlpx_ns(intel_dsi) * afe_clk(encoder, crtc_state) * 1000; 1025 mul = 8 * 1000000; 1026 hs_tx_timeout = DIV_ROUND_UP(intel_dsi->hs_tx_timeout * mul, 1027 divisor); 1028 lp_rx_timeout = DIV_ROUND_UP(intel_dsi->lp_rx_timeout * mul, divisor); 1029 ta_timeout = DIV_ROUND_UP(intel_dsi->turn_arnd_val * mul, divisor); 1030 1031 for_each_dsi_port(port, intel_dsi->ports) { 1032 dsi_trans = dsi_port_to_transcoder(port); 1033 1034 /* program hst_tx_timeout */ 1035 tmp = intel_de_read(dev_priv, DSI_HSTX_TO(dsi_trans)); 1036 tmp &= ~HSTX_TIMEOUT_VALUE_MASK; 1037 tmp |= HSTX_TIMEOUT_VALUE(hs_tx_timeout); 1038 intel_de_write(dev_priv, DSI_HSTX_TO(dsi_trans), tmp); 1039 1040 /* FIXME: DSI_CALIB_TO */ 1041 1042 /* program lp_rx_host timeout */ 1043 tmp = intel_de_read(dev_priv, DSI_LPRX_HOST_TO(dsi_trans)); 1044 tmp &= ~LPRX_TIMEOUT_VALUE_MASK; 1045 tmp |= LPRX_TIMEOUT_VALUE(lp_rx_timeout); 1046 intel_de_write(dev_priv, DSI_LPRX_HOST_TO(dsi_trans), tmp); 1047 1048 /* FIXME: DSI_PWAIT_TO */ 1049 1050 /* program turn around timeout */ 1051 tmp = intel_de_read(dev_priv, DSI_TA_TO(dsi_trans)); 1052 tmp &= ~TA_TIMEOUT_VALUE_MASK; 1053 tmp |= TA_TIMEOUT_VALUE(ta_timeout); 1054 intel_de_write(dev_priv, DSI_TA_TO(dsi_trans), tmp); 1055 } 1056 } 1057 1058 static void gen11_dsi_config_util_pin(struct intel_encoder *encoder, 1059 bool enable) 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 u32 tmp; 1064 1065 /* 1066 * used as TE i/p for DSI0, 1067 * for dual link/DSI1 TE is from slave DSI1 1068 * through GPIO. 1069 */ 1070 if (is_vid_mode(intel_dsi) || (intel_dsi->ports & BIT(PORT_B))) 1071 return; 1072 1073 tmp = intel_de_read(dev_priv, UTIL_PIN_CTL); 1074 1075 if (enable) { 1076 tmp |= UTIL_PIN_DIRECTION_INPUT; 1077 tmp |= UTIL_PIN_ENABLE; 1078 } else { 1079 tmp &= ~UTIL_PIN_ENABLE; 1080 } 1081 intel_de_write(dev_priv, UTIL_PIN_CTL, tmp); 1082 } 1083 1084 static void 1085 gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, 1086 const struct intel_crtc_state *crtc_state) 1087 { 1088 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1089 1090 /* step 4a: power up all lanes of the DDI used by DSI */ 1091 gen11_dsi_power_up_lanes(encoder); 1092 1093 /* step 4b: configure lane sequencing of the Combo-PHY transmitters */ 1094 gen11_dsi_config_phy_lanes_sequence(encoder); 1095 1096 /* step 4c: configure voltage swing and skew */ 1097 gen11_dsi_voltage_swing_program_seq(encoder); 1098 1099 /* enable DDI buffer */ 1100 gen11_dsi_enable_ddi_buffer(encoder); 1101 1102 /* setup D-PHY timings */ 1103 gen11_dsi_setup_dphy_timings(encoder, crtc_state); 1104 1105 /* Since transcoder is configured to take events from GPIO */ 1106 gen11_dsi_config_util_pin(encoder, true); 1107 1108 /* step 4h: setup DSI protocol timeouts */ 1109 gen11_dsi_setup_timeouts(encoder, crtc_state); 1110 1111 /* Step (4h, 4i, 4j, 4k): Configure transcoder */ 1112 gen11_dsi_configure_transcoder(encoder, crtc_state); 1113 1114 /* Step 4l: Gate DDI clocks */ 1115 if (IS_GEN(dev_priv, 11)) 1116 gen11_dsi_gate_clocks(encoder); 1117 } 1118 1119 static void gen11_dsi_powerup_panel(struct intel_encoder *encoder) 1120 { 1121 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1122 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1123 struct mipi_dsi_device *dsi; 1124 enum port port; 1125 enum transcoder dsi_trans; 1126 u32 tmp; 1127 int ret; 1128 1129 /* set maximum return packet size */ 1130 for_each_dsi_port(port, intel_dsi->ports) { 1131 dsi_trans = dsi_port_to_transcoder(port); 1132 1133 /* 1134 * FIXME: This uses the number of DW's currently in the payload 1135 * receive queue. This is probably not what we want here. 1136 */ 1137 tmp = intel_de_read(dev_priv, DSI_CMD_RXCTL(dsi_trans)); 1138 tmp &= NUMBER_RX_PLOAD_DW_MASK; 1139 /* multiply "Number Rx Payload DW" by 4 to get max value */ 1140 tmp = tmp * 4; 1141 dsi = intel_dsi->dsi_hosts[port]->device; 1142 ret = mipi_dsi_set_maximum_return_packet_size(dsi, tmp); 1143 if (ret < 0) 1144 drm_err(&dev_priv->drm, 1145 "error setting max return pkt size%d\n", tmp); 1146 } 1147 1148 /* panel power on related mipi dsi vbt sequences */ 1149 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON); 1150 intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay); 1151 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET); 1152 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP); 1153 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON); 1154 1155 /* ensure all panel commands dispatched before enabling transcoder */ 1156 wait_for_cmds_dispatched_to_panel(encoder); 1157 } 1158 1159 static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state, 1160 struct intel_encoder *encoder, 1161 const struct intel_crtc_state *crtc_state, 1162 const struct drm_connector_state *conn_state) 1163 { 1164 /* step2: enable IO power */ 1165 gen11_dsi_enable_io_power(encoder); 1166 1167 /* step3: enable DSI PLL */ 1168 gen11_dsi_program_esc_clk_div(encoder, crtc_state); 1169 } 1170 1171 static void gen11_dsi_pre_enable(struct intel_atomic_state *state, 1172 struct intel_encoder *encoder, 1173 const struct intel_crtc_state *pipe_config, 1174 const struct drm_connector_state *conn_state) 1175 { 1176 /* step3b */ 1177 gen11_dsi_map_pll(encoder, pipe_config); 1178 1179 /* step4: enable DSI port and DPHY */ 1180 gen11_dsi_enable_port_and_phy(encoder, pipe_config); 1181 1182 /* step5: program and powerup panel */ 1183 gen11_dsi_powerup_panel(encoder); 1184 1185 intel_dsc_enable(encoder, pipe_config); 1186 1187 /* step6c: configure transcoder timings */ 1188 gen11_dsi_set_transcoder_timings(encoder, pipe_config); 1189 } 1190 1191 static void gen11_dsi_enable(struct intel_atomic_state *state, 1192 struct intel_encoder *encoder, 1193 const struct intel_crtc_state *crtc_state, 1194 const struct drm_connector_state *conn_state) 1195 { 1196 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1197 1198 drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder); 1199 1200 /* step6d: enable dsi transcoder */ 1201 gen11_dsi_enable_transcoder(encoder); 1202 1203 /* step7: enable backlight */ 1204 intel_panel_enable_backlight(crtc_state, conn_state); 1205 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_ON); 1206 1207 intel_crtc_vblank_on(crtc_state); 1208 } 1209 1210 static void gen11_dsi_disable_transcoder(struct intel_encoder *encoder) 1211 { 1212 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1213 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1214 enum port port; 1215 enum transcoder dsi_trans; 1216 u32 tmp; 1217 1218 for_each_dsi_port(port, intel_dsi->ports) { 1219 dsi_trans = dsi_port_to_transcoder(port); 1220 1221 /* disable transcoder */ 1222 tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans)); 1223 tmp &= ~PIPECONF_ENABLE; 1224 intel_de_write(dev_priv, PIPECONF(dsi_trans), tmp); 1225 1226 /* wait for transcoder to be disabled */ 1227 if (intel_de_wait_for_clear(dev_priv, PIPECONF(dsi_trans), 1228 I965_PIPECONF_ACTIVE, 50)) 1229 drm_err(&dev_priv->drm, 1230 "DSI trancoder not disabled\n"); 1231 } 1232 } 1233 1234 static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder) 1235 { 1236 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1237 1238 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_OFF); 1239 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET); 1240 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF); 1241 1242 /* ensure cmds dispatched to panel */ 1243 wait_for_cmds_dispatched_to_panel(encoder); 1244 } 1245 1246 static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder) 1247 { 1248 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1249 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1250 enum port port; 1251 enum transcoder dsi_trans; 1252 u32 tmp; 1253 1254 /* disable periodic update mode */ 1255 if (is_cmd_mode(intel_dsi)) { 1256 for_each_dsi_port(port, intel_dsi->ports) { 1257 tmp = intel_de_read(dev_priv, DSI_CMD_FRMCTL(port)); 1258 tmp &= ~DSI_PERIODIC_FRAME_UPDATE_ENABLE; 1259 intel_de_write(dev_priv, DSI_CMD_FRMCTL(port), tmp); 1260 } 1261 } 1262 1263 /* put dsi link in ULPS */ 1264 for_each_dsi_port(port, intel_dsi->ports) { 1265 dsi_trans = dsi_port_to_transcoder(port); 1266 tmp = intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)); 1267 tmp |= LINK_ENTER_ULPS; 1268 tmp &= ~LINK_ULPS_TYPE_LP11; 1269 intel_de_write(dev_priv, DSI_LP_MSG(dsi_trans), tmp); 1270 1271 if (wait_for_us((intel_de_read(dev_priv, DSI_LP_MSG(dsi_trans)) & 1272 LINK_IN_ULPS), 1273 10)) 1274 drm_err(&dev_priv->drm, "DSI link not in ULPS\n"); 1275 } 1276 1277 /* disable ddi function */ 1278 for_each_dsi_port(port, intel_dsi->ports) { 1279 dsi_trans = dsi_port_to_transcoder(port); 1280 tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans)); 1281 tmp &= ~TRANS_DDI_FUNC_ENABLE; 1282 intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans), tmp); 1283 } 1284 1285 /* disable port sync mode if dual link */ 1286 if (intel_dsi->dual_link) { 1287 for_each_dsi_port(port, intel_dsi->ports) { 1288 dsi_trans = dsi_port_to_transcoder(port); 1289 tmp = intel_de_read(dev_priv, 1290 TRANS_DDI_FUNC_CTL2(dsi_trans)); 1291 tmp &= ~PORT_SYNC_MODE_ENABLE; 1292 intel_de_write(dev_priv, 1293 TRANS_DDI_FUNC_CTL2(dsi_trans), tmp); 1294 } 1295 } 1296 } 1297 1298 static void gen11_dsi_disable_port(struct intel_encoder *encoder) 1299 { 1300 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1301 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1302 u32 tmp; 1303 enum port port; 1304 1305 gen11_dsi_ungate_clocks(encoder); 1306 for_each_dsi_port(port, intel_dsi->ports) { 1307 tmp = intel_de_read(dev_priv, DDI_BUF_CTL(port)); 1308 tmp &= ~DDI_BUF_CTL_ENABLE; 1309 intel_de_write(dev_priv, DDI_BUF_CTL(port), tmp); 1310 1311 if (wait_for_us((intel_de_read(dev_priv, DDI_BUF_CTL(port)) & 1312 DDI_BUF_IS_IDLE), 1313 8)) 1314 drm_err(&dev_priv->drm, 1315 "DDI port:%c buffer not idle\n", 1316 port_name(port)); 1317 } 1318 gen11_dsi_gate_clocks(encoder); 1319 } 1320 1321 static void gen11_dsi_disable_io_power(struct intel_encoder *encoder) 1322 { 1323 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1324 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1325 enum port port; 1326 u32 tmp; 1327 1328 for_each_dsi_port(port, intel_dsi->ports) { 1329 intel_wakeref_t wakeref; 1330 1331 wakeref = fetch_and_zero(&intel_dsi->io_wakeref[port]); 1332 intel_display_power_put(dev_priv, 1333 port == PORT_A ? 1334 POWER_DOMAIN_PORT_DDI_A_IO : 1335 POWER_DOMAIN_PORT_DDI_B_IO, 1336 wakeref); 1337 } 1338 1339 /* set mode to DDI */ 1340 for_each_dsi_port(port, intel_dsi->ports) { 1341 tmp = intel_de_read(dev_priv, ICL_DSI_IO_MODECTL(port)); 1342 tmp &= ~COMBO_PHY_MODE_DSI; 1343 intel_de_write(dev_priv, ICL_DSI_IO_MODECTL(port), tmp); 1344 } 1345 } 1346 1347 static void gen11_dsi_disable(struct intel_atomic_state *state, 1348 struct intel_encoder *encoder, 1349 const struct intel_crtc_state *old_crtc_state, 1350 const struct drm_connector_state *old_conn_state) 1351 { 1352 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1353 1354 /* step1: turn off backlight */ 1355 intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_BACKLIGHT_OFF); 1356 intel_panel_disable_backlight(old_conn_state); 1357 1358 /* step2d,e: disable transcoder and wait */ 1359 gen11_dsi_disable_transcoder(encoder); 1360 1361 /* step2f,g: powerdown panel */ 1362 gen11_dsi_powerdown_panel(encoder); 1363 1364 /* step2h,i,j: deconfig trancoder */ 1365 gen11_dsi_deconfigure_trancoder(encoder); 1366 1367 /* step3: disable port */ 1368 gen11_dsi_disable_port(encoder); 1369 1370 gen11_dsi_config_util_pin(encoder, false); 1371 1372 /* step4: disable IO power */ 1373 gen11_dsi_disable_io_power(encoder); 1374 } 1375 1376 static void gen11_dsi_post_disable(struct intel_atomic_state *state, 1377 struct intel_encoder *encoder, 1378 const struct intel_crtc_state *old_crtc_state, 1379 const struct drm_connector_state *old_conn_state) 1380 { 1381 intel_crtc_vblank_off(old_crtc_state); 1382 1383 intel_dsc_disable(old_crtc_state); 1384 1385 skl_scaler_disable(old_crtc_state); 1386 } 1387 1388 static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector *connector, 1389 struct drm_display_mode *mode) 1390 { 1391 /* FIXME: DSC? */ 1392 return intel_dsi_mode_valid(connector, mode); 1393 } 1394 1395 static void gen11_dsi_get_timings(struct intel_encoder *encoder, 1396 struct intel_crtc_state *pipe_config) 1397 { 1398 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1399 struct drm_display_mode *adjusted_mode = 1400 &pipe_config->hw.adjusted_mode; 1401 1402 if (pipe_config->dsc.compressed_bpp) { 1403 int div = pipe_config->dsc.compressed_bpp; 1404 int mul = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); 1405 1406 adjusted_mode->crtc_htotal = 1407 DIV_ROUND_UP(adjusted_mode->crtc_htotal * mul, div); 1408 adjusted_mode->crtc_hsync_start = 1409 DIV_ROUND_UP(adjusted_mode->crtc_hsync_start * mul, div); 1410 adjusted_mode->crtc_hsync_end = 1411 DIV_ROUND_UP(adjusted_mode->crtc_hsync_end * mul, div); 1412 } 1413 1414 if (intel_dsi->dual_link) { 1415 adjusted_mode->crtc_hdisplay *= 2; 1416 if (intel_dsi->dual_link == DSI_DUAL_LINK_FRONT_BACK) 1417 adjusted_mode->crtc_hdisplay -= 1418 intel_dsi->pixel_overlap; 1419 adjusted_mode->crtc_htotal *= 2; 1420 } 1421 adjusted_mode->crtc_hblank_start = adjusted_mode->crtc_hdisplay; 1422 adjusted_mode->crtc_hblank_end = adjusted_mode->crtc_htotal; 1423 1424 if (intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE) { 1425 if (intel_dsi->dual_link) { 1426 adjusted_mode->crtc_hsync_start *= 2; 1427 adjusted_mode->crtc_hsync_end *= 2; 1428 } 1429 } 1430 adjusted_mode->crtc_vblank_start = adjusted_mode->crtc_vdisplay; 1431 adjusted_mode->crtc_vblank_end = adjusted_mode->crtc_vtotal; 1432 } 1433 1434 static bool gen11_dsi_is_periodic_cmd_mode(struct intel_dsi *intel_dsi) 1435 { 1436 struct drm_device *dev = intel_dsi->base.base.dev; 1437 struct drm_i915_private *dev_priv = to_i915(dev); 1438 enum transcoder dsi_trans; 1439 u32 val; 1440 1441 if (intel_dsi->ports == BIT(PORT_B)) 1442 dsi_trans = TRANSCODER_DSI_1; 1443 else 1444 dsi_trans = TRANSCODER_DSI_0; 1445 1446 val = intel_de_read(dev_priv, DSI_TRANS_FUNC_CONF(dsi_trans)); 1447 return (val & DSI_PERIODIC_FRAME_UPDATE_ENABLE); 1448 } 1449 1450 static void gen11_dsi_get_config(struct intel_encoder *encoder, 1451 struct intel_crtc_state *pipe_config) 1452 { 1453 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 1454 struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); 1455 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1456 1457 intel_dsc_get_config(encoder, pipe_config); 1458 1459 /* FIXME: adapt icl_ddi_clock_get() for DSI and use that? */ 1460 pipe_config->port_clock = intel_dpll_get_freq(i915, 1461 pipe_config->shared_dpll); 1462 1463 pipe_config->hw.adjusted_mode.crtc_clock = intel_dsi->pclk; 1464 if (intel_dsi->dual_link) 1465 pipe_config->hw.adjusted_mode.crtc_clock *= 2; 1466 1467 gen11_dsi_get_timings(encoder, pipe_config); 1468 pipe_config->output_types |= BIT(INTEL_OUTPUT_DSI); 1469 pipe_config->pipe_bpp = bdw_get_pipemisc_bpp(crtc); 1470 1471 if (gen11_dsi_is_periodic_cmd_mode(intel_dsi)) 1472 pipe_config->mode_flags |= I915_MODE_FLAG_DSI_PERIODIC_CMD_MODE; 1473 } 1474 1475 static int gen11_dsi_dsc_compute_config(struct intel_encoder *encoder, 1476 struct intel_crtc_state *crtc_state) 1477 { 1478 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1479 struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config; 1480 int dsc_max_bpc = INTEL_GEN(dev_priv) >= 12 ? 12 : 10; 1481 bool use_dsc; 1482 int ret; 1483 1484 use_dsc = intel_bios_get_dsc_params(encoder, crtc_state, dsc_max_bpc); 1485 if (!use_dsc) 1486 return 0; 1487 1488 if (crtc_state->pipe_bpp < 8 * 3) 1489 return -EINVAL; 1490 1491 /* FIXME: split only when necessary */ 1492 if (crtc_state->dsc.slice_count > 1) 1493 crtc_state->dsc.dsc_split = true; 1494 1495 vdsc_cfg->convert_rgb = true; 1496 1497 ret = intel_dsc_compute_params(encoder, crtc_state); 1498 if (ret) 1499 return ret; 1500 1501 /* DSI specific sanity checks on the common code */ 1502 drm_WARN_ON(&dev_priv->drm, vdsc_cfg->vbr_enable); 1503 drm_WARN_ON(&dev_priv->drm, vdsc_cfg->simple_422); 1504 drm_WARN_ON(&dev_priv->drm, 1505 vdsc_cfg->pic_width % vdsc_cfg->slice_width); 1506 drm_WARN_ON(&dev_priv->drm, vdsc_cfg->slice_height < 8); 1507 drm_WARN_ON(&dev_priv->drm, 1508 vdsc_cfg->pic_height % vdsc_cfg->slice_height); 1509 1510 ret = drm_dsc_compute_rc_parameters(vdsc_cfg); 1511 if (ret) 1512 return ret; 1513 1514 crtc_state->dsc.compression_enable = true; 1515 1516 return 0; 1517 } 1518 1519 static int gen11_dsi_compute_config(struct intel_encoder *encoder, 1520 struct intel_crtc_state *pipe_config, 1521 struct drm_connector_state *conn_state) 1522 { 1523 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 1524 struct intel_dsi *intel_dsi = container_of(encoder, struct intel_dsi, 1525 base); 1526 struct intel_connector *intel_connector = intel_dsi->attached_connector; 1527 const struct drm_display_mode *fixed_mode = 1528 intel_connector->panel.fixed_mode; 1529 struct drm_display_mode *adjusted_mode = 1530 &pipe_config->hw.adjusted_mode; 1531 int ret; 1532 1533 pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB; 1534 intel_fixed_panel_mode(fixed_mode, adjusted_mode); 1535 1536 ret = intel_pch_panel_fitting(pipe_config, conn_state); 1537 if (ret) 1538 return ret; 1539 1540 adjusted_mode->flags = 0; 1541 1542 /* Dual link goes to trancoder DSI'0' */ 1543 if (intel_dsi->ports == BIT(PORT_B)) 1544 pipe_config->cpu_transcoder = TRANSCODER_DSI_1; 1545 else 1546 pipe_config->cpu_transcoder = TRANSCODER_DSI_0; 1547 1548 if (intel_dsi->pixel_format == MIPI_DSI_FMT_RGB888) 1549 pipe_config->pipe_bpp = 24; 1550 else 1551 pipe_config->pipe_bpp = 18; 1552 1553 pipe_config->clock_set = true; 1554 1555 if (gen11_dsi_dsc_compute_config(encoder, pipe_config)) 1556 drm_dbg_kms(&i915->drm, "Attempting to use DSC failed\n"); 1557 1558 pipe_config->port_clock = afe_clk(encoder, pipe_config) / 5; 1559 1560 /* 1561 * In case of TE GATE cmd mode, we 1562 * receive TE from the slave if 1563 * dual link is enabled 1564 */ 1565 if (is_cmd_mode(intel_dsi)) { 1566 if (intel_dsi->ports == (BIT(PORT_B) | BIT(PORT_A))) 1567 pipe_config->mode_flags |= 1568 I915_MODE_FLAG_DSI_USE_TE1 | 1569 I915_MODE_FLAG_DSI_USE_TE0; 1570 else if (intel_dsi->ports == BIT(PORT_B)) 1571 pipe_config->mode_flags |= 1572 I915_MODE_FLAG_DSI_USE_TE1; 1573 else 1574 pipe_config->mode_flags |= 1575 I915_MODE_FLAG_DSI_USE_TE0; 1576 } 1577 1578 return 0; 1579 } 1580 1581 static void gen11_dsi_get_power_domains(struct intel_encoder *encoder, 1582 struct intel_crtc_state *crtc_state) 1583 { 1584 struct drm_i915_private *i915 = to_i915(encoder->base.dev); 1585 1586 get_dsi_io_power_domains(i915, 1587 enc_to_intel_dsi(encoder)); 1588 1589 if (crtc_state->dsc.compression_enable) 1590 intel_display_power_get(i915, 1591 intel_dsc_power_domain(crtc_state)); 1592 } 1593 1594 static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder, 1595 enum pipe *pipe) 1596 { 1597 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1598 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1599 enum transcoder dsi_trans; 1600 intel_wakeref_t wakeref; 1601 enum port port; 1602 bool ret = false; 1603 u32 tmp; 1604 1605 wakeref = intel_display_power_get_if_enabled(dev_priv, 1606 encoder->power_domain); 1607 if (!wakeref) 1608 return false; 1609 1610 for_each_dsi_port(port, intel_dsi->ports) { 1611 dsi_trans = dsi_port_to_transcoder(port); 1612 tmp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(dsi_trans)); 1613 switch (tmp & TRANS_DDI_EDP_INPUT_MASK) { 1614 case TRANS_DDI_EDP_INPUT_A_ON: 1615 *pipe = PIPE_A; 1616 break; 1617 case TRANS_DDI_EDP_INPUT_B_ONOFF: 1618 *pipe = PIPE_B; 1619 break; 1620 case TRANS_DDI_EDP_INPUT_C_ONOFF: 1621 *pipe = PIPE_C; 1622 break; 1623 case TRANS_DDI_EDP_INPUT_D_ONOFF: 1624 *pipe = PIPE_D; 1625 break; 1626 default: 1627 drm_err(&dev_priv->drm, "Invalid PIPE input\n"); 1628 goto out; 1629 } 1630 1631 tmp = intel_de_read(dev_priv, PIPECONF(dsi_trans)); 1632 ret = tmp & PIPECONF_ENABLE; 1633 } 1634 out: 1635 intel_display_power_put(dev_priv, encoder->power_domain, wakeref); 1636 return ret; 1637 } 1638 1639 static void gen11_dsi_encoder_destroy(struct drm_encoder *encoder) 1640 { 1641 intel_encoder_destroy(encoder); 1642 } 1643 1644 static const struct drm_encoder_funcs gen11_dsi_encoder_funcs = { 1645 .destroy = gen11_dsi_encoder_destroy, 1646 }; 1647 1648 static const struct drm_connector_funcs gen11_dsi_connector_funcs = { 1649 .detect = intel_panel_detect, 1650 .late_register = intel_connector_register, 1651 .early_unregister = intel_connector_unregister, 1652 .destroy = intel_connector_destroy, 1653 .fill_modes = drm_helper_probe_single_connector_modes, 1654 .atomic_get_property = intel_digital_connector_atomic_get_property, 1655 .atomic_set_property = intel_digital_connector_atomic_set_property, 1656 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 1657 .atomic_duplicate_state = intel_digital_connector_duplicate_state, 1658 }; 1659 1660 static const struct drm_connector_helper_funcs gen11_dsi_connector_helper_funcs = { 1661 .get_modes = intel_dsi_get_modes, 1662 .mode_valid = gen11_dsi_mode_valid, 1663 .atomic_check = intel_digital_connector_atomic_check, 1664 }; 1665 1666 static int gen11_dsi_host_attach(struct mipi_dsi_host *host, 1667 struct mipi_dsi_device *dsi) 1668 { 1669 return 0; 1670 } 1671 1672 static int gen11_dsi_host_detach(struct mipi_dsi_host *host, 1673 struct mipi_dsi_device *dsi) 1674 { 1675 return 0; 1676 } 1677 1678 static ssize_t gen11_dsi_host_transfer(struct mipi_dsi_host *host, 1679 const struct mipi_dsi_msg *msg) 1680 { 1681 struct intel_dsi_host *intel_dsi_host = to_intel_dsi_host(host); 1682 struct mipi_dsi_packet dsi_pkt; 1683 ssize_t ret; 1684 bool enable_lpdt = false; 1685 1686 ret = mipi_dsi_create_packet(&dsi_pkt, msg); 1687 if (ret < 0) 1688 return ret; 1689 1690 if (msg->flags & MIPI_DSI_MSG_USE_LPM) 1691 enable_lpdt = true; 1692 1693 /* send packet header */ 1694 ret = dsi_send_pkt_hdr(intel_dsi_host, dsi_pkt, enable_lpdt); 1695 if (ret < 0) 1696 return ret; 1697 1698 /* only long packet contains payload */ 1699 if (mipi_dsi_packet_format_is_long(msg->type)) { 1700 ret = dsi_send_pkt_payld(intel_dsi_host, dsi_pkt); 1701 if (ret < 0) 1702 return ret; 1703 } 1704 1705 //TODO: add payload receive code if needed 1706 1707 ret = sizeof(dsi_pkt.header) + dsi_pkt.payload_length; 1708 1709 return ret; 1710 } 1711 1712 static const struct mipi_dsi_host_ops gen11_dsi_host_ops = { 1713 .attach = gen11_dsi_host_attach, 1714 .detach = gen11_dsi_host_detach, 1715 .transfer = gen11_dsi_host_transfer, 1716 }; 1717 1718 #define ICL_PREPARE_CNT_MAX 0x7 1719 #define ICL_CLK_ZERO_CNT_MAX 0xf 1720 #define ICL_TRAIL_CNT_MAX 0x7 1721 #define ICL_TCLK_PRE_CNT_MAX 0x3 1722 #define ICL_TCLK_POST_CNT_MAX 0x7 1723 #define ICL_HS_ZERO_CNT_MAX 0xf 1724 #define ICL_EXIT_ZERO_CNT_MAX 0x7 1725 1726 static void icl_dphy_param_init(struct intel_dsi *intel_dsi) 1727 { 1728 struct drm_device *dev = intel_dsi->base.base.dev; 1729 struct drm_i915_private *dev_priv = to_i915(dev); 1730 struct mipi_config *mipi_config = dev_priv->vbt.dsi.config; 1731 u32 tlpx_ns; 1732 u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt; 1733 u32 ths_prepare_ns, tclk_trail_ns; 1734 u32 hs_zero_cnt; 1735 u32 tclk_pre_cnt, tclk_post_cnt; 1736 1737 tlpx_ns = intel_dsi_tlpx_ns(intel_dsi); 1738 1739 tclk_trail_ns = max(mipi_config->tclk_trail, mipi_config->ths_trail); 1740 ths_prepare_ns = max(mipi_config->ths_prepare, 1741 mipi_config->tclk_prepare); 1742 1743 /* 1744 * prepare cnt in escape clocks 1745 * this field represents a hexadecimal value with a precision 1746 * of 1.2 – i.e. the most significant bit is the integer 1747 * and the least significant 2 bits are fraction bits. 1748 * so, the field can represent a range of 0.25 to 1.75 1749 */ 1750 prepare_cnt = DIV_ROUND_UP(ths_prepare_ns * 4, tlpx_ns); 1751 if (prepare_cnt > ICL_PREPARE_CNT_MAX) { 1752 drm_dbg_kms(&dev_priv->drm, "prepare_cnt out of range (%d)\n", 1753 prepare_cnt); 1754 prepare_cnt = ICL_PREPARE_CNT_MAX; 1755 } 1756 1757 /* clk zero count in escape clocks */ 1758 clk_zero_cnt = DIV_ROUND_UP(mipi_config->tclk_prepare_clkzero - 1759 ths_prepare_ns, tlpx_ns); 1760 if (clk_zero_cnt > ICL_CLK_ZERO_CNT_MAX) { 1761 drm_dbg_kms(&dev_priv->drm, 1762 "clk_zero_cnt out of range (%d)\n", clk_zero_cnt); 1763 clk_zero_cnt = ICL_CLK_ZERO_CNT_MAX; 1764 } 1765 1766 /* trail cnt in escape clocks*/ 1767 trail_cnt = DIV_ROUND_UP(tclk_trail_ns, tlpx_ns); 1768 if (trail_cnt > ICL_TRAIL_CNT_MAX) { 1769 drm_dbg_kms(&dev_priv->drm, "trail_cnt out of range (%d)\n", 1770 trail_cnt); 1771 trail_cnt = ICL_TRAIL_CNT_MAX; 1772 } 1773 1774 /* tclk pre count in escape clocks */ 1775 tclk_pre_cnt = DIV_ROUND_UP(mipi_config->tclk_pre, tlpx_ns); 1776 if (tclk_pre_cnt > ICL_TCLK_PRE_CNT_MAX) { 1777 drm_dbg_kms(&dev_priv->drm, 1778 "tclk_pre_cnt out of range (%d)\n", tclk_pre_cnt); 1779 tclk_pre_cnt = ICL_TCLK_PRE_CNT_MAX; 1780 } 1781 1782 /* tclk post count in escape clocks */ 1783 tclk_post_cnt = DIV_ROUND_UP(mipi_config->tclk_post, tlpx_ns); 1784 if (tclk_post_cnt > ICL_TCLK_POST_CNT_MAX) { 1785 drm_dbg_kms(&dev_priv->drm, 1786 "tclk_post_cnt out of range (%d)\n", 1787 tclk_post_cnt); 1788 tclk_post_cnt = ICL_TCLK_POST_CNT_MAX; 1789 } 1790 1791 /* hs zero cnt in escape clocks */ 1792 hs_zero_cnt = DIV_ROUND_UP(mipi_config->ths_prepare_hszero - 1793 ths_prepare_ns, tlpx_ns); 1794 if (hs_zero_cnt > ICL_HS_ZERO_CNT_MAX) { 1795 drm_dbg_kms(&dev_priv->drm, "hs_zero_cnt out of range (%d)\n", 1796 hs_zero_cnt); 1797 hs_zero_cnt = ICL_HS_ZERO_CNT_MAX; 1798 } 1799 1800 /* hs exit zero cnt in escape clocks */ 1801 exit_zero_cnt = DIV_ROUND_UP(mipi_config->ths_exit, tlpx_ns); 1802 if (exit_zero_cnt > ICL_EXIT_ZERO_CNT_MAX) { 1803 drm_dbg_kms(&dev_priv->drm, 1804 "exit_zero_cnt out of range (%d)\n", 1805 exit_zero_cnt); 1806 exit_zero_cnt = ICL_EXIT_ZERO_CNT_MAX; 1807 } 1808 1809 /* clock lane dphy timings */ 1810 intel_dsi->dphy_reg = (CLK_PREPARE_OVERRIDE | 1811 CLK_PREPARE(prepare_cnt) | 1812 CLK_ZERO_OVERRIDE | 1813 CLK_ZERO(clk_zero_cnt) | 1814 CLK_PRE_OVERRIDE | 1815 CLK_PRE(tclk_pre_cnt) | 1816 CLK_POST_OVERRIDE | 1817 CLK_POST(tclk_post_cnt) | 1818 CLK_TRAIL_OVERRIDE | 1819 CLK_TRAIL(trail_cnt)); 1820 1821 /* data lanes dphy timings */ 1822 intel_dsi->dphy_data_lane_reg = (HS_PREPARE_OVERRIDE | 1823 HS_PREPARE(prepare_cnt) | 1824 HS_ZERO_OVERRIDE | 1825 HS_ZERO(hs_zero_cnt) | 1826 HS_TRAIL_OVERRIDE | 1827 HS_TRAIL(trail_cnt) | 1828 HS_EXIT_OVERRIDE | 1829 HS_EXIT(exit_zero_cnt)); 1830 1831 intel_dsi_log_params(intel_dsi); 1832 } 1833 1834 static void icl_dsi_add_properties(struct intel_connector *connector) 1835 { 1836 u32 allowed_scalers; 1837 1838 allowed_scalers = BIT(DRM_MODE_SCALE_ASPECT) | 1839 BIT(DRM_MODE_SCALE_FULLSCREEN) | 1840 BIT(DRM_MODE_SCALE_CENTER); 1841 1842 drm_connector_attach_scaling_mode_property(&connector->base, 1843 allowed_scalers); 1844 1845 connector->base.state->scaling_mode = DRM_MODE_SCALE_ASPECT; 1846 1847 drm_connector_set_panel_orientation_with_quirk(&connector->base, 1848 intel_dsi_get_panel_orientation(connector), 1849 connector->panel.fixed_mode->hdisplay, 1850 connector->panel.fixed_mode->vdisplay); 1851 } 1852 1853 void icl_dsi_init(struct drm_i915_private *dev_priv) 1854 { 1855 struct drm_device *dev = &dev_priv->drm; 1856 struct intel_dsi *intel_dsi; 1857 struct intel_encoder *encoder; 1858 struct intel_connector *intel_connector; 1859 struct drm_connector *connector; 1860 struct drm_display_mode *fixed_mode; 1861 enum port port; 1862 1863 if (!intel_bios_is_dsi_present(dev_priv, &port)) 1864 return; 1865 1866 intel_dsi = kzalloc(sizeof(*intel_dsi), GFP_KERNEL); 1867 if (!intel_dsi) 1868 return; 1869 1870 intel_connector = intel_connector_alloc(); 1871 if (!intel_connector) { 1872 kfree(intel_dsi); 1873 return; 1874 } 1875 1876 encoder = &intel_dsi->base; 1877 intel_dsi->attached_connector = intel_connector; 1878 connector = &intel_connector->base; 1879 1880 /* register DSI encoder with DRM subsystem */ 1881 drm_encoder_init(dev, &encoder->base, &gen11_dsi_encoder_funcs, 1882 DRM_MODE_ENCODER_DSI, "DSI %c", port_name(port)); 1883 1884 encoder->pre_pll_enable = gen11_dsi_pre_pll_enable; 1885 encoder->pre_enable = gen11_dsi_pre_enable; 1886 encoder->enable = gen11_dsi_enable; 1887 encoder->disable = gen11_dsi_disable; 1888 encoder->post_disable = gen11_dsi_post_disable; 1889 encoder->port = port; 1890 encoder->get_config = gen11_dsi_get_config; 1891 encoder->update_pipe = intel_panel_update_backlight; 1892 encoder->compute_config = gen11_dsi_compute_config; 1893 encoder->get_hw_state = gen11_dsi_get_hw_state; 1894 encoder->type = INTEL_OUTPUT_DSI; 1895 encoder->cloneable = 0; 1896 encoder->pipe_mask = ~0; 1897 encoder->power_domain = POWER_DOMAIN_PORT_DSI; 1898 encoder->get_power_domains = gen11_dsi_get_power_domains; 1899 1900 /* register DSI connector with DRM subsystem */ 1901 drm_connector_init(dev, connector, &gen11_dsi_connector_funcs, 1902 DRM_MODE_CONNECTOR_DSI); 1903 drm_connector_helper_add(connector, &gen11_dsi_connector_helper_funcs); 1904 connector->display_info.subpixel_order = SubPixelHorizontalRGB; 1905 connector->interlace_allowed = false; 1906 connector->doublescan_allowed = false; 1907 intel_connector->get_hw_state = intel_connector_get_hw_state; 1908 1909 /* attach connector to encoder */ 1910 intel_connector_attach_encoder(intel_connector, encoder); 1911 1912 mutex_lock(&dev->mode_config.mutex); 1913 fixed_mode = intel_panel_vbt_fixed_mode(intel_connector); 1914 mutex_unlock(&dev->mode_config.mutex); 1915 1916 if (!fixed_mode) { 1917 drm_err(&dev_priv->drm, "DSI fixed mode info missing\n"); 1918 goto err; 1919 } 1920 1921 intel_panel_init(&intel_connector->panel, fixed_mode, NULL); 1922 intel_panel_setup_backlight(connector, INVALID_PIPE); 1923 1924 if (dev_priv->vbt.dsi.config->dual_link) 1925 intel_dsi->ports = BIT(PORT_A) | BIT(PORT_B); 1926 else 1927 intel_dsi->ports = BIT(port); 1928 1929 intel_dsi->dcs_backlight_ports = dev_priv->vbt.dsi.bl_ports; 1930 intel_dsi->dcs_cabc_ports = dev_priv->vbt.dsi.cabc_ports; 1931 1932 for_each_dsi_port(port, intel_dsi->ports) { 1933 struct intel_dsi_host *host; 1934 1935 host = intel_dsi_host_init(intel_dsi, &gen11_dsi_host_ops, port); 1936 if (!host) 1937 goto err; 1938 1939 intel_dsi->dsi_hosts[port] = host; 1940 } 1941 1942 if (!intel_dsi_vbt_init(intel_dsi, MIPI_DSI_GENERIC_PANEL_ID)) { 1943 drm_dbg_kms(&dev_priv->drm, "no device found\n"); 1944 goto err; 1945 } 1946 1947 icl_dphy_param_init(intel_dsi); 1948 1949 icl_dsi_add_properties(intel_connector); 1950 return; 1951 1952 err: 1953 drm_connector_cleanup(connector); 1954 drm_encoder_cleanup(&encoder->base); 1955 kfree(intel_dsi); 1956 kfree(intel_connector); 1957 } 1958