1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright © 2009 Intel Corporation 4 */ 5 6 #include <linux/delay.h> 7 #include <linux/i2c.h> 8 #include <linux/pm_runtime.h> 9 10 #include <drm/drm_fourcc.h> 11 12 #include "framebuffer.h" 13 #include "gma_display.h" 14 #include "power.h" 15 #include "psb_drv.h" 16 #include "psb_intel_drv.h" 17 #include "psb_intel_reg.h" 18 19 #define MRST_LIMIT_LVDS_100L 0 20 #define MRST_LIMIT_LVDS_83 1 21 #define MRST_LIMIT_LVDS_100 2 22 #define MRST_LIMIT_SDVO 3 23 24 #define MRST_DOT_MIN 19750 25 #define MRST_DOT_MAX 120000 26 #define MRST_M_MIN_100L 20 27 #define MRST_M_MIN_100 10 28 #define MRST_M_MIN_83 12 29 #define MRST_M_MAX_100L 34 30 #define MRST_M_MAX_100 17 31 #define MRST_M_MAX_83 20 32 #define MRST_P1_MIN 2 33 #define MRST_P1_MAX_0 7 34 #define MRST_P1_MAX_1 8 35 36 static bool mrst_lvds_find_best_pll(const struct gma_limit_t *limit, 37 struct drm_crtc *crtc, int target, 38 int refclk, struct gma_clock_t *best_clock); 39 40 static bool mrst_sdvo_find_best_pll(const struct gma_limit_t *limit, 41 struct drm_crtc *crtc, int target, 42 int refclk, struct gma_clock_t *best_clock); 43 44 static const struct gma_limit_t mrst_limits[] = { 45 { /* MRST_LIMIT_LVDS_100L */ 46 .dot = {.min = MRST_DOT_MIN, .max = MRST_DOT_MAX}, 47 .m = {.min = MRST_M_MIN_100L, .max = MRST_M_MAX_100L}, 48 .p1 = {.min = MRST_P1_MIN, .max = MRST_P1_MAX_1}, 49 .find_pll = mrst_lvds_find_best_pll, 50 }, 51 { /* MRST_LIMIT_LVDS_83L */ 52 .dot = {.min = MRST_DOT_MIN, .max = MRST_DOT_MAX}, 53 .m = {.min = MRST_M_MIN_83, .max = MRST_M_MAX_83}, 54 .p1 = {.min = MRST_P1_MIN, .max = MRST_P1_MAX_0}, 55 .find_pll = mrst_lvds_find_best_pll, 56 }, 57 { /* MRST_LIMIT_LVDS_100 */ 58 .dot = {.min = MRST_DOT_MIN, .max = MRST_DOT_MAX}, 59 .m = {.min = MRST_M_MIN_100, .max = MRST_M_MAX_100}, 60 .p1 = {.min = MRST_P1_MIN, .max = MRST_P1_MAX_1}, 61 .find_pll = mrst_lvds_find_best_pll, 62 }, 63 { /* MRST_LIMIT_SDVO */ 64 .vco = {.min = 1400000, .max = 2800000}, 65 .n = {.min = 3, .max = 7}, 66 .m = {.min = 80, .max = 137}, 67 .p1 = {.min = 1, .max = 2}, 68 .p2 = {.dot_limit = 200000, .p2_slow = 10, .p2_fast = 10}, 69 .find_pll = mrst_sdvo_find_best_pll, 70 }, 71 }; 72 73 #define MRST_M_MIN 10 74 static const u32 oaktrail_m_converts[] = { 75 0x2B, 0x15, 0x2A, 0x35, 0x1A, 0x0D, 0x26, 0x33, 0x19, 0x2C, 76 0x36, 0x3B, 0x1D, 0x2E, 0x37, 0x1B, 0x2D, 0x16, 0x0B, 0x25, 77 0x12, 0x09, 0x24, 0x32, 0x39, 0x1c, 78 }; 79 80 static const struct gma_limit_t *mrst_limit(struct drm_crtc *crtc, 81 int refclk) 82 { 83 const struct gma_limit_t *limit = NULL; 84 struct drm_device *dev = crtc->dev; 85 struct drm_psb_private *dev_priv = dev->dev_private; 86 87 if (gma_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) 88 || gma_pipe_has_type(crtc, INTEL_OUTPUT_MIPI)) { 89 switch (dev_priv->core_freq) { 90 case 100: 91 limit = &mrst_limits[MRST_LIMIT_LVDS_100L]; 92 break; 93 case 166: 94 limit = &mrst_limits[MRST_LIMIT_LVDS_83]; 95 break; 96 case 200: 97 limit = &mrst_limits[MRST_LIMIT_LVDS_100]; 98 break; 99 } 100 } else if (gma_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) { 101 limit = &mrst_limits[MRST_LIMIT_SDVO]; 102 } else { 103 limit = NULL; 104 dev_err(dev->dev, "mrst_limit Wrong display type.\n"); 105 } 106 107 return limit; 108 } 109 110 /** Derive the pixel clock for the given refclk and divisors for 8xx chips. */ 111 static void mrst_lvds_clock(int refclk, struct gma_clock_t *clock) 112 { 113 clock->dot = (refclk * clock->m) / (14 * clock->p1); 114 } 115 116 static void mrst_print_pll(struct gma_clock_t *clock) 117 { 118 DRM_DEBUG_DRIVER("dotclock=%d, m=%d, m1=%d, m2=%d, n=%d, p1=%d, p2=%d\n", 119 clock->dot, clock->m, clock->m1, clock->m2, clock->n, 120 clock->p1, clock->p2); 121 } 122 123 static bool mrst_sdvo_find_best_pll(const struct gma_limit_t *limit, 124 struct drm_crtc *crtc, int target, 125 int refclk, struct gma_clock_t *best_clock) 126 { 127 struct gma_clock_t clock; 128 u32 target_vco, actual_freq; 129 s32 freq_error, min_error = 100000; 130 131 memset(best_clock, 0, sizeof(*best_clock)); 132 memset(&clock, 0, sizeof(clock)); 133 134 for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) { 135 for (clock.n = limit->n.min; clock.n <= limit->n.max; 136 clock.n++) { 137 for (clock.p1 = limit->p1.min; 138 clock.p1 <= limit->p1.max; clock.p1++) { 139 /* p2 value always stored in p2_slow on SDVO */ 140 clock.p = clock.p1 * limit->p2.p2_slow; 141 target_vco = target * clock.p; 142 143 /* VCO will increase at this point so break */ 144 if (target_vco > limit->vco.max) 145 break; 146 147 if (target_vco < limit->vco.min) 148 continue; 149 150 actual_freq = (refclk * clock.m) / 151 (clock.n * clock.p); 152 freq_error = 10000 - 153 ((target * 10000) / actual_freq); 154 155 if (freq_error < -min_error) { 156 /* freq_error will start to decrease at 157 this point so break */ 158 break; 159 } 160 161 if (freq_error < 0) 162 freq_error = -freq_error; 163 164 if (freq_error < min_error) { 165 min_error = freq_error; 166 *best_clock = clock; 167 } 168 } 169 } 170 if (min_error == 0) 171 break; 172 } 173 174 return min_error == 0; 175 } 176 177 /** 178 * Returns a set of divisors for the desired target clock with the given refclk, 179 * or FALSE. Divisor values are the actual divisors for 180 */ 181 static bool mrst_lvds_find_best_pll(const struct gma_limit_t *limit, 182 struct drm_crtc *crtc, int target, 183 int refclk, struct gma_clock_t *best_clock) 184 { 185 struct gma_clock_t clock; 186 int err = target; 187 188 memset(best_clock, 0, sizeof(*best_clock)); 189 memset(&clock, 0, sizeof(clock)); 190 191 for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) { 192 for (clock.p1 = limit->p1.min; clock.p1 <= limit->p1.max; 193 clock.p1++) { 194 int this_err; 195 196 mrst_lvds_clock(refclk, &clock); 197 198 this_err = abs(clock.dot - target); 199 if (this_err < err) { 200 *best_clock = clock; 201 err = this_err; 202 } 203 } 204 } 205 return err != target; 206 } 207 208 /** 209 * Sets the power management mode of the pipe and plane. 210 * 211 * This code should probably grow support for turning the cursor off and back 212 * on appropriately at the same time as we're turning the pipe off/on. 213 */ 214 static void oaktrail_crtc_dpms(struct drm_crtc *crtc, int mode) 215 { 216 struct drm_device *dev = crtc->dev; 217 struct drm_psb_private *dev_priv = dev->dev_private; 218 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 219 int pipe = gma_crtc->pipe; 220 const struct psb_offset *map = &dev_priv->regmap[pipe]; 221 u32 temp; 222 int i; 223 int need_aux = gma_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ? 1 : 0; 224 225 if (gma_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) { 226 oaktrail_crtc_hdmi_dpms(crtc, mode); 227 return; 228 } 229 230 if (!gma_power_begin(dev, true)) 231 return; 232 233 /* XXX: When our outputs are all unaware of DPMS modes other than off 234 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC. 235 */ 236 switch (mode) { 237 case DRM_MODE_DPMS_ON: 238 case DRM_MODE_DPMS_STANDBY: 239 case DRM_MODE_DPMS_SUSPEND: 240 for (i = 0; i <= need_aux; i++) { 241 /* Enable the DPLL */ 242 temp = REG_READ_WITH_AUX(map->dpll, i); 243 if ((temp & DPLL_VCO_ENABLE) == 0) { 244 REG_WRITE_WITH_AUX(map->dpll, temp, i); 245 REG_READ_WITH_AUX(map->dpll, i); 246 /* Wait for the clocks to stabilize. */ 247 udelay(150); 248 REG_WRITE_WITH_AUX(map->dpll, 249 temp | DPLL_VCO_ENABLE, i); 250 REG_READ_WITH_AUX(map->dpll, i); 251 /* Wait for the clocks to stabilize. */ 252 udelay(150); 253 REG_WRITE_WITH_AUX(map->dpll, 254 temp | DPLL_VCO_ENABLE, i); 255 REG_READ_WITH_AUX(map->dpll, i); 256 /* Wait for the clocks to stabilize. */ 257 udelay(150); 258 } 259 260 /* Enable the pipe */ 261 temp = REG_READ_WITH_AUX(map->conf, i); 262 if ((temp & PIPEACONF_ENABLE) == 0) { 263 REG_WRITE_WITH_AUX(map->conf, 264 temp | PIPEACONF_ENABLE, i); 265 } 266 267 /* Enable the plane */ 268 temp = REG_READ_WITH_AUX(map->cntr, i); 269 if ((temp & DISPLAY_PLANE_ENABLE) == 0) { 270 REG_WRITE_WITH_AUX(map->cntr, 271 temp | DISPLAY_PLANE_ENABLE, 272 i); 273 /* Flush the plane changes */ 274 REG_WRITE_WITH_AUX(map->base, 275 REG_READ_WITH_AUX(map->base, i), i); 276 } 277 278 } 279 gma_crtc_load_lut(crtc); 280 281 /* Give the overlay scaler a chance to enable 282 if it's on this pipe */ 283 /* psb_intel_crtc_dpms_video(crtc, true); TODO */ 284 break; 285 case DRM_MODE_DPMS_OFF: 286 /* Give the overlay scaler a chance to disable 287 * if it's on this pipe */ 288 /* psb_intel_crtc_dpms_video(crtc, FALSE); TODO */ 289 290 for (i = 0; i <= need_aux; i++) { 291 /* Disable the VGA plane that we never use */ 292 REG_WRITE_WITH_AUX(VGACNTRL, VGA_DISP_DISABLE, i); 293 /* Disable display plane */ 294 temp = REG_READ_WITH_AUX(map->cntr, i); 295 if ((temp & DISPLAY_PLANE_ENABLE) != 0) { 296 REG_WRITE_WITH_AUX(map->cntr, 297 temp & ~DISPLAY_PLANE_ENABLE, i); 298 /* Flush the plane changes */ 299 REG_WRITE_WITH_AUX(map->base, 300 REG_READ(map->base), i); 301 REG_READ_WITH_AUX(map->base, i); 302 } 303 304 /* Next, disable display pipes */ 305 temp = REG_READ_WITH_AUX(map->conf, i); 306 if ((temp & PIPEACONF_ENABLE) != 0) { 307 REG_WRITE_WITH_AUX(map->conf, 308 temp & ~PIPEACONF_ENABLE, i); 309 REG_READ_WITH_AUX(map->conf, i); 310 } 311 /* Wait for for the pipe disable to take effect. */ 312 gma_wait_for_vblank(dev); 313 314 temp = REG_READ_WITH_AUX(map->dpll, i); 315 if ((temp & DPLL_VCO_ENABLE) != 0) { 316 REG_WRITE_WITH_AUX(map->dpll, 317 temp & ~DPLL_VCO_ENABLE, i); 318 REG_READ_WITH_AUX(map->dpll, i); 319 } 320 321 /* Wait for the clocks to turn off. */ 322 udelay(150); 323 } 324 break; 325 } 326 327 /* Set FIFO Watermarks (values taken from EMGD) */ 328 REG_WRITE(DSPARB, 0x3f80); 329 REG_WRITE(DSPFW1, 0x3f8f0404); 330 REG_WRITE(DSPFW2, 0x04040f04); 331 REG_WRITE(DSPFW3, 0x0); 332 REG_WRITE(DSPFW4, 0x04040404); 333 REG_WRITE(DSPFW5, 0x04040404); 334 REG_WRITE(DSPFW6, 0x78); 335 REG_WRITE(DSPCHICKENBIT, REG_READ(DSPCHICKENBIT) | 0xc040); 336 337 gma_power_end(dev); 338 } 339 340 /** 341 * Return the pipe currently connected to the panel fitter, 342 * or -1 if the panel fitter is not present or not in use 343 */ 344 static int oaktrail_panel_fitter_pipe(struct drm_device *dev) 345 { 346 u32 pfit_control; 347 348 pfit_control = REG_READ(PFIT_CONTROL); 349 350 /* See if the panel fitter is in use */ 351 if ((pfit_control & PFIT_ENABLE) == 0) 352 return -1; 353 return (pfit_control >> 29) & 3; 354 } 355 356 static int oaktrail_crtc_mode_set(struct drm_crtc *crtc, 357 struct drm_display_mode *mode, 358 struct drm_display_mode *adjusted_mode, 359 int x, int y, 360 struct drm_framebuffer *old_fb) 361 { 362 struct drm_device *dev = crtc->dev; 363 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 364 struct drm_psb_private *dev_priv = dev->dev_private; 365 int pipe = gma_crtc->pipe; 366 const struct psb_offset *map = &dev_priv->regmap[pipe]; 367 int refclk = 0; 368 struct gma_clock_t clock; 369 const struct gma_limit_t *limit; 370 u32 dpll = 0, fp = 0, dspcntr, pipeconf; 371 bool ok, is_sdvo = false; 372 bool is_lvds = false; 373 bool is_mipi = false; 374 struct drm_mode_config *mode_config = &dev->mode_config; 375 struct gma_encoder *gma_encoder = NULL; 376 uint64_t scalingType = DRM_MODE_SCALE_FULLSCREEN; 377 struct drm_connector *connector; 378 int i; 379 int need_aux = gma_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ? 1 : 0; 380 381 if (gma_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) 382 return oaktrail_crtc_hdmi_mode_set(crtc, mode, adjusted_mode, x, y, old_fb); 383 384 if (!gma_power_begin(dev, true)) 385 return 0; 386 387 memcpy(&gma_crtc->saved_mode, 388 mode, 389 sizeof(struct drm_display_mode)); 390 memcpy(&gma_crtc->saved_adjusted_mode, 391 adjusted_mode, 392 sizeof(struct drm_display_mode)); 393 394 list_for_each_entry(connector, &mode_config->connector_list, head) { 395 if (!connector->encoder || connector->encoder->crtc != crtc) 396 continue; 397 398 gma_encoder = gma_attached_encoder(connector); 399 400 switch (gma_encoder->type) { 401 case INTEL_OUTPUT_LVDS: 402 is_lvds = true; 403 break; 404 case INTEL_OUTPUT_SDVO: 405 is_sdvo = true; 406 break; 407 case INTEL_OUTPUT_MIPI: 408 is_mipi = true; 409 break; 410 } 411 } 412 413 /* Disable the VGA plane that we never use */ 414 for (i = 0; i <= need_aux; i++) 415 REG_WRITE_WITH_AUX(VGACNTRL, VGA_DISP_DISABLE, i); 416 417 /* Disable the panel fitter if it was on our pipe */ 418 if (oaktrail_panel_fitter_pipe(dev) == pipe) 419 REG_WRITE(PFIT_CONTROL, 0); 420 421 for (i = 0; i <= need_aux; i++) { 422 REG_WRITE_WITH_AUX(map->src, ((mode->crtc_hdisplay - 1) << 16) | 423 (mode->crtc_vdisplay - 1), i); 424 } 425 426 if (gma_encoder) 427 drm_object_property_get_value(&connector->base, 428 dev->mode_config.scaling_mode_property, &scalingType); 429 430 if (scalingType == DRM_MODE_SCALE_NO_SCALE) { 431 /* Moorestown doesn't have register support for centering so 432 * we need to mess with the h/vblank and h/vsync start and 433 * ends to get centering */ 434 int offsetX = 0, offsetY = 0; 435 436 offsetX = (adjusted_mode->crtc_hdisplay - 437 mode->crtc_hdisplay) / 2; 438 offsetY = (adjusted_mode->crtc_vdisplay - 439 mode->crtc_vdisplay) / 2; 440 441 for (i = 0; i <= need_aux; i++) { 442 REG_WRITE_WITH_AUX(map->htotal, (mode->crtc_hdisplay - 1) | 443 ((adjusted_mode->crtc_htotal - 1) << 16), i); 444 REG_WRITE_WITH_AUX(map->vtotal, (mode->crtc_vdisplay - 1) | 445 ((adjusted_mode->crtc_vtotal - 1) << 16), i); 446 REG_WRITE_WITH_AUX(map->hblank, 447 (adjusted_mode->crtc_hblank_start - offsetX - 1) | 448 ((adjusted_mode->crtc_hblank_end - offsetX - 1) << 16), i); 449 REG_WRITE_WITH_AUX(map->hsync, 450 (adjusted_mode->crtc_hsync_start - offsetX - 1) | 451 ((adjusted_mode->crtc_hsync_end - offsetX - 1) << 16), i); 452 REG_WRITE_WITH_AUX(map->vblank, 453 (adjusted_mode->crtc_vblank_start - offsetY - 1) | 454 ((adjusted_mode->crtc_vblank_end - offsetY - 1) << 16), i); 455 REG_WRITE_WITH_AUX(map->vsync, 456 (adjusted_mode->crtc_vsync_start - offsetY - 1) | 457 ((adjusted_mode->crtc_vsync_end - offsetY - 1) << 16), i); 458 } 459 } else { 460 for (i = 0; i <= need_aux; i++) { 461 REG_WRITE_WITH_AUX(map->htotal, (adjusted_mode->crtc_hdisplay - 1) | 462 ((adjusted_mode->crtc_htotal - 1) << 16), i); 463 REG_WRITE_WITH_AUX(map->vtotal, (adjusted_mode->crtc_vdisplay - 1) | 464 ((adjusted_mode->crtc_vtotal - 1) << 16), i); 465 REG_WRITE_WITH_AUX(map->hblank, (adjusted_mode->crtc_hblank_start - 1) | 466 ((adjusted_mode->crtc_hblank_end - 1) << 16), i); 467 REG_WRITE_WITH_AUX(map->hsync, (adjusted_mode->crtc_hsync_start - 1) | 468 ((adjusted_mode->crtc_hsync_end - 1) << 16), i); 469 REG_WRITE_WITH_AUX(map->vblank, (adjusted_mode->crtc_vblank_start - 1) | 470 ((adjusted_mode->crtc_vblank_end - 1) << 16), i); 471 REG_WRITE_WITH_AUX(map->vsync, (adjusted_mode->crtc_vsync_start - 1) | 472 ((adjusted_mode->crtc_vsync_end - 1) << 16), i); 473 } 474 } 475 476 /* Flush the plane changes */ 477 { 478 const struct drm_crtc_helper_funcs *crtc_funcs = 479 crtc->helper_private; 480 crtc_funcs->mode_set_base(crtc, x, y, old_fb); 481 } 482 483 /* setup pipeconf */ 484 pipeconf = REG_READ(map->conf); 485 486 /* Set up the display plane register */ 487 dspcntr = REG_READ(map->cntr); 488 dspcntr |= DISPPLANE_GAMMA_ENABLE; 489 490 if (pipe == 0) 491 dspcntr |= DISPPLANE_SEL_PIPE_A; 492 else 493 dspcntr |= DISPPLANE_SEL_PIPE_B; 494 495 if (is_mipi) 496 goto oaktrail_crtc_mode_set_exit; 497 498 499 dpll = 0; /*BIT16 = 0 for 100MHz reference */ 500 501 refclk = is_sdvo ? 96000 : dev_priv->core_freq * 1000; 502 limit = mrst_limit(crtc, refclk); 503 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, 504 refclk, &clock); 505 506 if (is_sdvo) { 507 /* Convert calculated values to register values */ 508 clock.p1 = (1L << (clock.p1 - 1)); 509 clock.m -= 2; 510 clock.n = (1L << (clock.n - 1)); 511 } 512 513 if (!ok) 514 DRM_ERROR("Failed to find proper PLL settings"); 515 516 mrst_print_pll(&clock); 517 518 if (is_sdvo) 519 fp = clock.n << 16 | clock.m; 520 else 521 fp = oaktrail_m_converts[(clock.m - MRST_M_MIN)] << 8; 522 523 dpll |= DPLL_VGA_MODE_DIS; 524 525 526 dpll |= DPLL_VCO_ENABLE; 527 528 if (is_lvds) 529 dpll |= DPLLA_MODE_LVDS; 530 else 531 dpll |= DPLLB_MODE_DAC_SERIAL; 532 533 if (is_sdvo) { 534 int sdvo_pixel_multiply = 535 adjusted_mode->clock / mode->clock; 536 537 dpll |= DPLL_DVO_HIGH_SPEED; 538 dpll |= 539 (sdvo_pixel_multiply - 540 1) << SDVO_MULTIPLIER_SHIFT_HIRES; 541 } 542 543 544 /* compute bitmask from p1 value */ 545 if (is_sdvo) 546 dpll |= clock.p1 << 16; // dpll |= (1 << (clock.p1 - 1)) << 16; 547 else 548 dpll |= (1 << (clock.p1 - 2)) << 17; 549 550 dpll |= DPLL_VCO_ENABLE; 551 552 if (dpll & DPLL_VCO_ENABLE) { 553 for (i = 0; i <= need_aux; i++) { 554 REG_WRITE_WITH_AUX(map->fp0, fp, i); 555 REG_WRITE_WITH_AUX(map->dpll, dpll & ~DPLL_VCO_ENABLE, i); 556 REG_READ_WITH_AUX(map->dpll, i); 557 /* Check the DPLLA lock bit PIPEACONF[29] */ 558 udelay(150); 559 } 560 } 561 562 for (i = 0; i <= need_aux; i++) { 563 REG_WRITE_WITH_AUX(map->fp0, fp, i); 564 REG_WRITE_WITH_AUX(map->dpll, dpll, i); 565 REG_READ_WITH_AUX(map->dpll, i); 566 /* Wait for the clocks to stabilize. */ 567 udelay(150); 568 569 /* write it again -- the BIOS does, after all */ 570 REG_WRITE_WITH_AUX(map->dpll, dpll, i); 571 REG_READ_WITH_AUX(map->dpll, i); 572 /* Wait for the clocks to stabilize. */ 573 udelay(150); 574 575 REG_WRITE_WITH_AUX(map->conf, pipeconf, i); 576 REG_READ_WITH_AUX(map->conf, i); 577 gma_wait_for_vblank(dev); 578 579 REG_WRITE_WITH_AUX(map->cntr, dspcntr, i); 580 gma_wait_for_vblank(dev); 581 } 582 583 oaktrail_crtc_mode_set_exit: 584 gma_power_end(dev); 585 return 0; 586 } 587 588 static int oaktrail_pipe_set_base(struct drm_crtc *crtc, 589 int x, int y, struct drm_framebuffer *old_fb) 590 { 591 struct drm_device *dev = crtc->dev; 592 struct drm_psb_private *dev_priv = dev->dev_private; 593 struct gma_crtc *gma_crtc = to_gma_crtc(crtc); 594 struct drm_framebuffer *fb = crtc->primary->fb; 595 int pipe = gma_crtc->pipe; 596 const struct psb_offset *map = &dev_priv->regmap[pipe]; 597 unsigned long start, offset; 598 599 u32 dspcntr; 600 int ret = 0; 601 602 /* no fb bound */ 603 if (!fb) { 604 dev_dbg(dev->dev, "No FB bound\n"); 605 return 0; 606 } 607 608 if (!gma_power_begin(dev, true)) 609 return 0; 610 611 start = to_gtt_range(fb->obj[0])->offset; 612 offset = y * fb->pitches[0] + x * fb->format->cpp[0]; 613 614 REG_WRITE(map->stride, fb->pitches[0]); 615 616 dspcntr = REG_READ(map->cntr); 617 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK; 618 619 switch (fb->format->cpp[0] * 8) { 620 case 8: 621 dspcntr |= DISPPLANE_8BPP; 622 break; 623 case 16: 624 if (fb->format->depth == 15) 625 dspcntr |= DISPPLANE_15_16BPP; 626 else 627 dspcntr |= DISPPLANE_16BPP; 628 break; 629 case 24: 630 case 32: 631 dspcntr |= DISPPLANE_32BPP_NO_ALPHA; 632 break; 633 default: 634 dev_err(dev->dev, "Unknown color depth\n"); 635 ret = -EINVAL; 636 goto pipe_set_base_exit; 637 } 638 REG_WRITE(map->cntr, dspcntr); 639 640 REG_WRITE(map->base, offset); 641 REG_READ(map->base); 642 REG_WRITE(map->surf, start); 643 REG_READ(map->surf); 644 645 pipe_set_base_exit: 646 gma_power_end(dev); 647 return ret; 648 } 649 650 const struct drm_crtc_helper_funcs oaktrail_helper_funcs = { 651 .dpms = oaktrail_crtc_dpms, 652 .mode_set = oaktrail_crtc_mode_set, 653 .mode_set_base = oaktrail_pipe_set_base, 654 .prepare = gma_crtc_prepare, 655 .commit = gma_crtc_commit, 656 }; 657 658 /* Not used yet */ 659 const struct gma_clock_funcs mrst_clock_funcs = { 660 .clock = mrst_lvds_clock, 661 .limit = mrst_limit, 662 .pll_is_valid = gma_pll_is_valid, 663 }; 664