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1/*2 * Copyright 2007-8 Advanced Micro Devices, Inc.3 * Copyright 2008 Red Hat Inc.4 *5 * Permission is hereby granted, free of charge, to any person obtaining a6 * copy of this software and associated documentation files (the "Software"),7 * to deal in the Software without restriction, including without limitation8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,9 * and/or sell copies of the Software, and to permit persons to whom the10 * Software is furnished to do so, subject to the following conditions:11 *12 * The above copyright notice and this permission notice shall be included in13 * all copies or substantial portions of the Software.14 *15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR21 * OTHER DEALINGS IN THE SOFTWARE.22 *23 * Authors: Dave Airlie24 * Alex Deucher25 */26 27#include <drm/drm_fixed.h>28#include <drm/drm_fourcc.h>29#include <drm/drm_framebuffer.h>30#include <drm/drm_modeset_helper_vtables.h>31#include <drm/drm_vblank.h>32#include <drm/radeon_drm.h>33 34#include "atom.h"35#include "radeon.h"36 37static void radeon_overscan_setup(struct drm_crtc *crtc,38 struct drm_display_mode *mode)39{40 struct drm_device *dev = crtc->dev;41 struct radeon_device *rdev = dev->dev_private;42 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);43 44 WREG32(RADEON_OVR_CLR + radeon_crtc->crtc_offset, 0);45 WREG32(RADEON_OVR_WID_LEFT_RIGHT + radeon_crtc->crtc_offset, 0);46 WREG32(RADEON_OVR_WID_TOP_BOTTOM + radeon_crtc->crtc_offset, 0);47}48 49static void radeon_legacy_rmx_mode_set(struct drm_crtc *crtc,50 struct drm_display_mode *mode)51{52 struct drm_device *dev = crtc->dev;53 struct radeon_device *rdev = dev->dev_private;54 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);55 int xres = mode->hdisplay;56 int yres = mode->vdisplay;57 bool hscale = true, vscale = true;58 int hsync_wid;59 int vsync_wid;60 int hsync_start;61 int blank_width;62 u32 scale, inc, crtc_more_cntl;63 u32 fp_horz_stretch, fp_vert_stretch, fp_horz_vert_active;64 u32 fp_h_sync_strt_wid, fp_crtc_h_total_disp;65 u32 fp_v_sync_strt_wid, fp_crtc_v_total_disp;66 struct drm_display_mode *native_mode = &radeon_crtc->native_mode;67 68 fp_vert_stretch = RREG32(RADEON_FP_VERT_STRETCH) &69 (RADEON_VERT_STRETCH_RESERVED |70 RADEON_VERT_AUTO_RATIO_INC);71 fp_horz_stretch = RREG32(RADEON_FP_HORZ_STRETCH) &72 (RADEON_HORZ_FP_LOOP_STRETCH |73 RADEON_HORZ_AUTO_RATIO_INC);74 75 crtc_more_cntl = 0;76 if ((rdev->family == CHIP_RS100) ||77 (rdev->family == CHIP_RS200)) {78 /* This is to workaround the asic bug for RMX, some versions79 of BIOS dosen't have this register initialized correctly. */80 crtc_more_cntl |= RADEON_CRTC_H_CUTOFF_ACTIVE_EN;81 }82 83 84 fp_crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)85 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));86 87 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;88 if (!hsync_wid)89 hsync_wid = 1;90 hsync_start = mode->crtc_hsync_start - 8;91 92 fp_h_sync_strt_wid = ((hsync_start & 0x1fff)93 | ((hsync_wid & 0x3f) << 16)94 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)95 ? RADEON_CRTC_H_SYNC_POL96 : 0));97 98 fp_crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)99 | ((mode->crtc_vdisplay - 1) << 16));100 101 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;102 if (!vsync_wid)103 vsync_wid = 1;104 105 fp_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)106 | ((vsync_wid & 0x1f) << 16)107 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)108 ? RADEON_CRTC_V_SYNC_POL109 : 0));110 111 fp_horz_vert_active = 0;112 113 if (native_mode->hdisplay == 0 ||114 native_mode->vdisplay == 0) {115 hscale = false;116 vscale = false;117 } else {118 if (xres > native_mode->hdisplay)119 xres = native_mode->hdisplay;120 if (yres > native_mode->vdisplay)121 yres = native_mode->vdisplay;122 123 if (xres == native_mode->hdisplay)124 hscale = false;125 if (yres == native_mode->vdisplay)126 vscale = false;127 }128 129 switch (radeon_crtc->rmx_type) {130 case RMX_FULL:131 case RMX_ASPECT:132 if (!hscale)133 fp_horz_stretch |= ((xres/8-1) << 16);134 else {135 inc = (fp_horz_stretch & RADEON_HORZ_AUTO_RATIO_INC) ? 1 : 0;136 scale = ((xres + inc) * RADEON_HORZ_STRETCH_RATIO_MAX)137 / native_mode->hdisplay + 1;138 fp_horz_stretch |= (((scale) & RADEON_HORZ_STRETCH_RATIO_MASK) |139 RADEON_HORZ_STRETCH_BLEND |140 RADEON_HORZ_STRETCH_ENABLE |141 ((native_mode->hdisplay/8-1) << 16));142 }143 144 if (!vscale)145 fp_vert_stretch |= ((yres-1) << 12);146 else {147 inc = (fp_vert_stretch & RADEON_VERT_AUTO_RATIO_INC) ? 1 : 0;148 scale = ((yres + inc) * RADEON_VERT_STRETCH_RATIO_MAX)149 / native_mode->vdisplay + 1;150 fp_vert_stretch |= (((scale) & RADEON_VERT_STRETCH_RATIO_MASK) |151 RADEON_VERT_STRETCH_ENABLE |152 RADEON_VERT_STRETCH_BLEND |153 ((native_mode->vdisplay-1) << 12));154 }155 break;156 case RMX_CENTER:157 fp_horz_stretch |= ((xres/8-1) << 16);158 fp_vert_stretch |= ((yres-1) << 12);159 160 crtc_more_cntl |= (RADEON_CRTC_AUTO_HORZ_CENTER_EN |161 RADEON_CRTC_AUTO_VERT_CENTER_EN);162 163 blank_width = (mode->crtc_hblank_end - mode->crtc_hblank_start) / 8;164 if (blank_width > 110)165 blank_width = 110;166 167 fp_crtc_h_total_disp = (((blank_width) & 0x3ff)168 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));169 170 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;171 if (!hsync_wid)172 hsync_wid = 1;173 174 fp_h_sync_strt_wid = ((((mode->crtc_hsync_start - mode->crtc_hblank_start) / 8) & 0x1fff)175 | ((hsync_wid & 0x3f) << 16)176 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)177 ? RADEON_CRTC_H_SYNC_POL178 : 0));179 180 fp_crtc_v_total_disp = (((mode->crtc_vblank_end - mode->crtc_vblank_start) & 0xffff)181 | ((mode->crtc_vdisplay - 1) << 16));182 183 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;184 if (!vsync_wid)185 vsync_wid = 1;186 187 fp_v_sync_strt_wid = ((((mode->crtc_vsync_start - mode->crtc_vblank_start) & 0xfff)188 | ((vsync_wid & 0x1f) << 16)189 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)190 ? RADEON_CRTC_V_SYNC_POL191 : 0)));192 193 fp_horz_vert_active = (((native_mode->vdisplay) & 0xfff) |194 (((native_mode->hdisplay / 8) & 0x1ff) << 16));195 break;196 case RMX_OFF:197 default:198 fp_horz_stretch |= ((xres/8-1) << 16);199 fp_vert_stretch |= ((yres-1) << 12);200 break;201 }202 203 WREG32(RADEON_FP_HORZ_STRETCH, fp_horz_stretch);204 WREG32(RADEON_FP_VERT_STRETCH, fp_vert_stretch);205 WREG32(RADEON_CRTC_MORE_CNTL, crtc_more_cntl);206 WREG32(RADEON_FP_HORZ_VERT_ACTIVE, fp_horz_vert_active);207 WREG32(RADEON_FP_H_SYNC_STRT_WID, fp_h_sync_strt_wid);208 WREG32(RADEON_FP_V_SYNC_STRT_WID, fp_v_sync_strt_wid);209 WREG32(RADEON_FP_CRTC_H_TOTAL_DISP, fp_crtc_h_total_disp);210 WREG32(RADEON_FP_CRTC_V_TOTAL_DISP, fp_crtc_v_total_disp);211}212 213static void radeon_pll_wait_for_read_update_complete(struct drm_device *dev)214{215 struct radeon_device *rdev = dev->dev_private;216 int i = 0;217 218 /* FIXME: Certain revisions of R300 can't recover here. Not sure of219 the cause yet, but this workaround will mask the problem for now.220 Other chips usually will pass at the very first test, so the221 workaround shouldn't have any effect on them. */222 for (i = 0;223 (i < 10000 &&224 RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);225 i++);226}227 228static void radeon_pll_write_update(struct drm_device *dev)229{230 struct radeon_device *rdev = dev->dev_private;231 232 while (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_ATOMIC_UPDATE_R);233 234 WREG32_PLL_P(RADEON_PPLL_REF_DIV,235 RADEON_PPLL_ATOMIC_UPDATE_W,236 ~(RADEON_PPLL_ATOMIC_UPDATE_W));237}238 239static void radeon_pll2_wait_for_read_update_complete(struct drm_device *dev)240{241 struct radeon_device *rdev = dev->dev_private;242 int i = 0;243 244 245 /* FIXME: Certain revisions of R300 can't recover here. Not sure of246 the cause yet, but this workaround will mask the problem for now.247 Other chips usually will pass at the very first test, so the248 workaround shouldn't have any effect on them. */249 for (i = 0;250 (i < 10000 &&251 RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);252 i++);253}254 255static void radeon_pll2_write_update(struct drm_device *dev)256{257 struct radeon_device *rdev = dev->dev_private;258 259 while (RREG32_PLL(RADEON_P2PLL_REF_DIV) & RADEON_P2PLL_ATOMIC_UPDATE_R);260 261 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,262 RADEON_P2PLL_ATOMIC_UPDATE_W,263 ~(RADEON_P2PLL_ATOMIC_UPDATE_W));264}265 266static uint8_t radeon_compute_pll_gain(uint16_t ref_freq, uint16_t ref_div,267 uint16_t fb_div)268{269 unsigned int vcoFreq;270 271 if (!ref_div)272 return 1;273 274 vcoFreq = ((unsigned)ref_freq * fb_div) / ref_div;275 276 /*277 * This is horribly crude: the VCO frequency range is divided into278 * 3 parts, each part having a fixed PLL gain value.279 */280 if (vcoFreq >= 30000)281 /*282 * [300..max] MHz : 7283 */284 return 7;285 else if (vcoFreq >= 18000)286 /*287 * [180..300) MHz : 4288 */289 return 4;290 else291 /*292 * [0..180) MHz : 1293 */294 return 1;295}296 297static void radeon_crtc_dpms(struct drm_crtc *crtc, int mode)298{299 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);300 struct drm_device *dev = crtc->dev;301 struct radeon_device *rdev = dev->dev_private;302 uint32_t crtc_ext_cntl = 0;303 uint32_t mask;304 305 if (radeon_crtc->crtc_id)306 mask = (RADEON_CRTC2_DISP_DIS |307 RADEON_CRTC2_VSYNC_DIS |308 RADEON_CRTC2_HSYNC_DIS |309 RADEON_CRTC2_DISP_REQ_EN_B);310 else311 mask = (RADEON_CRTC_DISPLAY_DIS |312 RADEON_CRTC_VSYNC_DIS |313 RADEON_CRTC_HSYNC_DIS);314 315 /*316 * On all dual CRTC GPUs this bit controls the CRTC of the primary DAC.317 * Therefore it is set in the DAC DMPS function.318 * This is different for GPU's with a single CRTC but a primary and a319 * TV DAC: here it controls the single CRTC no matter where it is320 * routed. Therefore we set it here.321 */322 if (rdev->flags & RADEON_SINGLE_CRTC)323 crtc_ext_cntl = RADEON_CRTC_CRT_ON;324 325 switch (mode) {326 case DRM_MODE_DPMS_ON:327 radeon_crtc->enabled = true;328 /* adjust pm to dpms changes BEFORE enabling crtcs */329 radeon_pm_compute_clocks(rdev);330 if (radeon_crtc->crtc_id)331 WREG32_P(RADEON_CRTC2_GEN_CNTL, RADEON_CRTC2_EN, ~(RADEON_CRTC2_EN | mask));332 else {333 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_EN, ~(RADEON_CRTC_EN |334 RADEON_CRTC_DISP_REQ_EN_B));335 WREG32_P(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl, ~(mask | crtc_ext_cntl));336 }337 if (dev->num_crtcs > radeon_crtc->crtc_id)338 drm_crtc_vblank_on(crtc);339 radeon_crtc_load_lut(crtc);340 break;341 case DRM_MODE_DPMS_STANDBY:342 case DRM_MODE_DPMS_SUSPEND:343 case DRM_MODE_DPMS_OFF:344 if (dev->num_crtcs > radeon_crtc->crtc_id)345 drm_crtc_vblank_off(crtc);346 if (radeon_crtc->crtc_id)347 WREG32_P(RADEON_CRTC2_GEN_CNTL, mask, ~(RADEON_CRTC2_EN | mask));348 else {349 WREG32_P(RADEON_CRTC_GEN_CNTL, RADEON_CRTC_DISP_REQ_EN_B, ~(RADEON_CRTC_EN |350 RADEON_CRTC_DISP_REQ_EN_B));351 WREG32_P(RADEON_CRTC_EXT_CNTL, mask, ~(mask | crtc_ext_cntl));352 }353 radeon_crtc->enabled = false;354 /* adjust pm to dpms changes AFTER disabling crtcs */355 radeon_pm_compute_clocks(rdev);356 break;357 }358}359 360int radeon_crtc_set_base(struct drm_crtc *crtc, int x, int y,361 struct drm_framebuffer *old_fb)362{363 return radeon_crtc_do_set_base(crtc, old_fb, x, y, 0);364}365 366int radeon_crtc_set_base_atomic(struct drm_crtc *crtc,367 struct drm_framebuffer *fb,368 int x, int y, enum mode_set_atomic state)369{370 return radeon_crtc_do_set_base(crtc, fb, x, y, 1);371}372 373int radeon_crtc_do_set_base(struct drm_crtc *crtc,374 struct drm_framebuffer *fb,375 int x, int y, int atomic)376{377 struct drm_device *dev = crtc->dev;378 struct radeon_device *rdev = dev->dev_private;379 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);380 struct drm_framebuffer *target_fb;381 struct drm_gem_object *obj;382 struct radeon_bo *rbo;383 uint64_t base;384 uint32_t crtc_offset, crtc_offset_cntl, crtc_tile_x0_y0 = 0;385 uint32_t crtc_pitch, pitch_pixels;386 uint32_t tiling_flags;387 int format;388 uint32_t gen_cntl_reg, gen_cntl_val;389 int r;390 391 DRM_DEBUG_KMS("\n");392 /* no fb bound */393 if (!atomic && !crtc->primary->fb) {394 DRM_DEBUG_KMS("No FB bound\n");395 return 0;396 }397 398 if (atomic)399 target_fb = fb;400 else401 target_fb = crtc->primary->fb;402 403 switch (target_fb->format->cpp[0] * 8) {404 case 8:405 format = 2;406 break;407 case 15: /* 555 */408 format = 3;409 break;410 case 16: /* 565 */411 format = 4;412 break;413 case 24: /* RGB */414 format = 5;415 break;416 case 32: /* xRGB */417 format = 6;418 break;419 default:420 return false;421 }422 423 /* Pin framebuffer & get tilling informations */424 obj = target_fb->obj[0];425 rbo = gem_to_radeon_bo(obj);426retry:427 r = radeon_bo_reserve(rbo, false);428 if (unlikely(r != 0))429 return r;430 /* Only 27 bit offset for legacy CRTC */431 r = radeon_bo_pin_restricted(rbo, RADEON_GEM_DOMAIN_VRAM, 1 << 27,432 &base);433 if (unlikely(r != 0)) {434 radeon_bo_unreserve(rbo);435 436 /* On old GPU like RN50 with little vram pining can fails because437 * current fb is taking all space needed. So instead of unpining438 * the old buffer after pining the new one, first unpin old one439 * and then retry pining new one.440 *441 * As only master can set mode only master can pin and it is442 * unlikely the master client will race with itself especialy443 * on those old gpu with single crtc.444 *445 * We don't shutdown the display controller because new buffer446 * will end up in same spot.447 */448 if (!atomic && fb && fb != crtc->primary->fb) {449 struct radeon_bo *old_rbo;450 unsigned long nsize, osize;451 452 old_rbo = gem_to_radeon_bo(fb->obj[0]);453 osize = radeon_bo_size(old_rbo);454 nsize = radeon_bo_size(rbo);455 if (nsize <= osize && !radeon_bo_reserve(old_rbo, false)) {456 radeon_bo_unpin(old_rbo);457 radeon_bo_unreserve(old_rbo);458 fb = NULL;459 goto retry;460 }461 }462 return -EINVAL;463 }464 radeon_bo_get_tiling_flags(rbo, &tiling_flags, NULL);465 radeon_bo_unreserve(rbo);466 if (tiling_flags & RADEON_TILING_MICRO)467 DRM_ERROR("trying to scanout microtiled buffer\n");468 469 /* if scanout was in GTT this really wouldn't work */470 /* crtc offset is from display base addr not FB location */471 radeon_crtc->legacy_display_base_addr = rdev->mc.vram_start;472 473 base -= radeon_crtc->legacy_display_base_addr;474 475 crtc_offset_cntl = 0;476 477 pitch_pixels = target_fb->pitches[0] / target_fb->format->cpp[0];478 crtc_pitch = DIV_ROUND_UP(pitch_pixels * target_fb->format->cpp[0] * 8,479 target_fb->format->cpp[0] * 8 * 8);480 crtc_pitch |= crtc_pitch << 16;481 482 crtc_offset_cntl |= RADEON_CRTC_GUI_TRIG_OFFSET_LEFT_EN;483 if (tiling_flags & RADEON_TILING_MACRO) {484 if (ASIC_IS_R300(rdev))485 crtc_offset_cntl |= (R300_CRTC_X_Y_MODE_EN |486 R300_CRTC_MICRO_TILE_BUFFER_DIS |487 R300_CRTC_MACRO_TILE_EN);488 else489 crtc_offset_cntl |= RADEON_CRTC_TILE_EN;490 } else {491 if (ASIC_IS_R300(rdev))492 crtc_offset_cntl &= ~(R300_CRTC_X_Y_MODE_EN |493 R300_CRTC_MICRO_TILE_BUFFER_DIS |494 R300_CRTC_MACRO_TILE_EN);495 else496 crtc_offset_cntl &= ~RADEON_CRTC_TILE_EN;497 }498 499 if (tiling_flags & RADEON_TILING_MACRO) {500 if (ASIC_IS_R300(rdev)) {501 crtc_tile_x0_y0 = x | (y << 16);502 base &= ~0x7ff;503 } else {504 int byteshift = target_fb->format->cpp[0] * 8 >> 4;505 int tile_addr = (((y >> 3) * pitch_pixels + x) >> (8 - byteshift)) << 11;506 base += tile_addr + ((x << byteshift) % 256) + ((y % 8) << 8);507 crtc_offset_cntl |= (y % 16);508 }509 } else {510 int offset = y * pitch_pixels + x;511 switch (target_fb->format->cpp[0] * 8) {512 case 8:513 offset *= 1;514 break;515 case 15:516 case 16:517 offset *= 2;518 break;519 case 24:520 offset *= 3;521 break;522 case 32:523 offset *= 4;524 break;525 default:526 return false;527 }528 base += offset;529 }530 531 base &= ~7;532 533 if (radeon_crtc->crtc_id == 1)534 gen_cntl_reg = RADEON_CRTC2_GEN_CNTL;535 else536 gen_cntl_reg = RADEON_CRTC_GEN_CNTL;537 538 gen_cntl_val = RREG32(gen_cntl_reg);539 gen_cntl_val &= ~(0xf << 8);540 gen_cntl_val |= (format << 8);541 gen_cntl_val &= ~RADEON_CRTC_VSTAT_MODE_MASK;542 WREG32(gen_cntl_reg, gen_cntl_val);543 544 crtc_offset = (u32)base;545 546 WREG32(RADEON_DISPLAY_BASE_ADDR + radeon_crtc->crtc_offset, radeon_crtc->legacy_display_base_addr);547 548 if (ASIC_IS_R300(rdev)) {549 if (radeon_crtc->crtc_id)550 WREG32(R300_CRTC2_TILE_X0_Y0, crtc_tile_x0_y0);551 else552 WREG32(R300_CRTC_TILE_X0_Y0, crtc_tile_x0_y0);553 }554 WREG32(RADEON_CRTC_OFFSET_CNTL + radeon_crtc->crtc_offset, crtc_offset_cntl);555 WREG32(RADEON_CRTC_OFFSET + radeon_crtc->crtc_offset, crtc_offset);556 WREG32(RADEON_CRTC_PITCH + radeon_crtc->crtc_offset, crtc_pitch);557 558 if (!atomic && fb && fb != crtc->primary->fb) {559 rbo = gem_to_radeon_bo(fb->obj[0]);560 r = radeon_bo_reserve(rbo, false);561 if (unlikely(r != 0))562 return r;563 radeon_bo_unpin(rbo);564 radeon_bo_unreserve(rbo);565 }566 567 /* Bytes per pixel may have changed */568 radeon_bandwidth_update(rdev);569 570 return 0;571}572 573static bool radeon_set_crtc_timing(struct drm_crtc *crtc, struct drm_display_mode *mode)574{575 struct drm_device *dev = crtc->dev;576 struct radeon_device *rdev = dev->dev_private;577 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);578 const struct drm_framebuffer *fb = crtc->primary->fb;579 struct drm_encoder *encoder;580 int format;581 int hsync_start;582 int hsync_wid;583 int vsync_wid;584 uint32_t crtc_h_total_disp;585 uint32_t crtc_h_sync_strt_wid;586 uint32_t crtc_v_total_disp;587 uint32_t crtc_v_sync_strt_wid;588 bool is_tv = false;589 590 DRM_DEBUG_KMS("\n");591 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {592 if (encoder->crtc == crtc) {593 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);594 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {595 is_tv = true;596 DRM_INFO("crtc %d is connected to a TV\n", radeon_crtc->crtc_id);597 break;598 }599 }600 }601 602 switch (fb->format->cpp[0] * 8) {603 case 8:604 format = 2;605 break;606 case 15: /* 555 */607 format = 3;608 break;609 case 16: /* 565 */610 format = 4;611 break;612 case 24: /* RGB */613 format = 5;614 break;615 case 32: /* xRGB */616 format = 6;617 break;618 default:619 return false;620 }621 622 crtc_h_total_disp = ((((mode->crtc_htotal / 8) - 1) & 0x3ff)623 | ((((mode->crtc_hdisplay / 8) - 1) & 0x1ff) << 16));624 625 hsync_wid = (mode->crtc_hsync_end - mode->crtc_hsync_start) / 8;626 if (!hsync_wid)627 hsync_wid = 1;628 hsync_start = mode->crtc_hsync_start - 8;629 630 crtc_h_sync_strt_wid = ((hsync_start & 0x1fff)631 | ((hsync_wid & 0x3f) << 16)632 | ((mode->flags & DRM_MODE_FLAG_NHSYNC)633 ? RADEON_CRTC_H_SYNC_POL634 : 0));635 636 /* This works for double scan mode. */637 crtc_v_total_disp = (((mode->crtc_vtotal - 1) & 0xffff)638 | ((mode->crtc_vdisplay - 1) << 16));639 640 vsync_wid = mode->crtc_vsync_end - mode->crtc_vsync_start;641 if (!vsync_wid)642 vsync_wid = 1;643 644 crtc_v_sync_strt_wid = (((mode->crtc_vsync_start - 1) & 0xfff)645 | ((vsync_wid & 0x1f) << 16)646 | ((mode->flags & DRM_MODE_FLAG_NVSYNC)647 ? RADEON_CRTC_V_SYNC_POL648 : 0));649 650 if (radeon_crtc->crtc_id) {651 uint32_t crtc2_gen_cntl;652 uint32_t disp2_merge_cntl;653 654 /* if TV DAC is enabled for another crtc and keep it enabled */655 crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL) & 0x00718080;656 crtc2_gen_cntl |= ((format << 8)657 | RADEON_CRTC2_VSYNC_DIS658 | RADEON_CRTC2_HSYNC_DIS659 | RADEON_CRTC2_DISP_DIS660 | RADEON_CRTC2_DISP_REQ_EN_B661 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)662 ? RADEON_CRTC2_DBL_SCAN_EN663 : 0)664 | ((mode->flags & DRM_MODE_FLAG_CSYNC)665 ? RADEON_CRTC2_CSYNC_EN666 : 0)667 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)668 ? RADEON_CRTC2_INTERLACE_EN669 : 0));670 671 /* rs4xx chips seem to like to have the crtc enabled when the timing is set */672 if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480))673 crtc2_gen_cntl |= RADEON_CRTC2_EN;674 675 disp2_merge_cntl = RREG32(RADEON_DISP2_MERGE_CNTL);676 disp2_merge_cntl &= ~RADEON_DISP2_RGB_OFFSET_EN;677 678 WREG32(RADEON_DISP2_MERGE_CNTL, disp2_merge_cntl);679 WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl);680 681 WREG32(RADEON_FP_H2_SYNC_STRT_WID, crtc_h_sync_strt_wid);682 WREG32(RADEON_FP_V2_SYNC_STRT_WID, crtc_v_sync_strt_wid);683 } else {684 uint32_t crtc_gen_cntl;685 uint32_t crtc_ext_cntl;686 uint32_t disp_merge_cntl;687 688 crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL) & 0x00718000;689 crtc_gen_cntl |= (RADEON_CRTC_EXT_DISP_EN690 | (format << 8)691 | RADEON_CRTC_DISP_REQ_EN_B692 | ((mode->flags & DRM_MODE_FLAG_DBLSCAN)693 ? RADEON_CRTC_DBL_SCAN_EN694 : 0)695 | ((mode->flags & DRM_MODE_FLAG_CSYNC)696 ? RADEON_CRTC_CSYNC_EN697 : 0)698 | ((mode->flags & DRM_MODE_FLAG_INTERLACE)699 ? RADEON_CRTC_INTERLACE_EN700 : 0));701 702 /* rs4xx chips seem to like to have the crtc enabled when the timing is set */703 if ((rdev->family == CHIP_RS400) || (rdev->family == CHIP_RS480))704 crtc_gen_cntl |= RADEON_CRTC_EN;705 706 crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL);707 crtc_ext_cntl |= (RADEON_XCRT_CNT_EN |708 RADEON_CRTC_VSYNC_DIS |709 RADEON_CRTC_HSYNC_DIS |710 RADEON_CRTC_DISPLAY_DIS);711 712 disp_merge_cntl = RREG32(RADEON_DISP_MERGE_CNTL);713 disp_merge_cntl &= ~RADEON_DISP_RGB_OFFSET_EN;714 715 WREG32(RADEON_DISP_MERGE_CNTL, disp_merge_cntl);716 WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl);717 WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl);718 }719 720 if (is_tv)721 radeon_legacy_tv_adjust_crtc_reg(encoder, &crtc_h_total_disp,722 &crtc_h_sync_strt_wid, &crtc_v_total_disp,723 &crtc_v_sync_strt_wid);724 725 WREG32(RADEON_CRTC_H_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_h_total_disp);726 WREG32(RADEON_CRTC_H_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_h_sync_strt_wid);727 WREG32(RADEON_CRTC_V_TOTAL_DISP + radeon_crtc->crtc_offset, crtc_v_total_disp);728 WREG32(RADEON_CRTC_V_SYNC_STRT_WID + radeon_crtc->crtc_offset, crtc_v_sync_strt_wid);729 730 return true;731}732 733static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)734{735 struct drm_device *dev = crtc->dev;736 struct radeon_device *rdev = dev->dev_private;737 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);738 struct drm_encoder *encoder;739 uint32_t feedback_div = 0;740 uint32_t frac_fb_div = 0;741 uint32_t reference_div = 0;742 uint32_t post_divider = 0;743 uint32_t freq = 0;744 uint8_t pll_gain;745 bool use_bios_divs = false;746 /* PLL registers */747 uint32_t pll_ref_div = 0;748 uint32_t pll_fb_post_div = 0;749 uint32_t htotal_cntl = 0;750 bool is_tv = false;751 struct radeon_pll *pll;752 753 struct {754 int divider;755 int bitvalue;756 } *post_div, post_divs[] = {757 /* From RAGE 128 VR/RAGE 128 GL Register758 * Reference Manual (Technical Reference759 * Manual P/N RRG-G04100-C Rev. 0.04), page760 * 3-17 (PLL_DIV_[3:0]).761 */762 { 1, 0 }, /* VCLK_SRC */763 { 2, 1 }, /* VCLK_SRC/2 */764 { 4, 2 }, /* VCLK_SRC/4 */765 { 8, 3 }, /* VCLK_SRC/8 */766 { 3, 4 }, /* VCLK_SRC/3 */767 { 16, 5 }, /* VCLK_SRC/16 */768 { 6, 6 }, /* VCLK_SRC/6 */769 { 12, 7 }, /* VCLK_SRC/12 */770 { 0, 0 }771 };772 773 if (radeon_crtc->crtc_id)774 pll = &rdev->clock.p2pll;775 else776 pll = &rdev->clock.p1pll;777 778 pll->flags = RADEON_PLL_LEGACY;779 780 if (mode->clock > 200000) /* range limits??? */781 pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;782 else783 pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV;784 785 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {786 if (encoder->crtc == crtc) {787 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);788 789 if (radeon_encoder->active_device & ATOM_DEVICE_TV_SUPPORT) {790 is_tv = true;791 break;792 }793 794 if (encoder->encoder_type != DRM_MODE_ENCODER_DAC)795 pll->flags |= RADEON_PLL_NO_ODD_POST_DIV;796 if (encoder->encoder_type == DRM_MODE_ENCODER_LVDS) {797 if (!rdev->is_atom_bios) {798 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);799 struct radeon_encoder_lvds *lvds = (struct radeon_encoder_lvds *)radeon_encoder->enc_priv;800 if (lvds) {801 if (lvds->use_bios_dividers) {802 pll_ref_div = lvds->panel_ref_divider;803 pll_fb_post_div = (lvds->panel_fb_divider |804 (lvds->panel_post_divider << 16));805 htotal_cntl = 0;806 use_bios_divs = true;807 }808 }809 }810 pll->flags |= RADEON_PLL_USE_REF_DIV;811 }812 }813 }814 815 DRM_DEBUG_KMS("\n");816 817 if (!use_bios_divs) {818 radeon_compute_pll_legacy(pll, mode->clock,819 &freq, &feedback_div, &frac_fb_div,820 &reference_div, &post_divider);821 822 for (post_div = &post_divs[0]; post_div->divider; ++post_div) {823 if (post_div->divider == post_divider)824 break;825 }826 827 if (!post_div->divider)828 post_div = &post_divs[0];829 830 DRM_DEBUG_KMS("dc=%u, fd=%d, rd=%d, pd=%d\n",831 (unsigned)freq,832 feedback_div,833 reference_div,834 post_divider);835 836 pll_ref_div = reference_div;837#if defined(__powerpc__) && (0) /* TODO */838 /* apparently programming this otherwise causes a hang??? */839 if (info->MacModel == RADEON_MAC_IBOOK)840 pll_fb_post_div = 0x000600ad;841 else842#endif843 pll_fb_post_div = (feedback_div | (post_div->bitvalue << 16));844 845 htotal_cntl = mode->htotal & 0x7;846 847 }848 849 pll_gain = radeon_compute_pll_gain(pll->reference_freq,850 pll_ref_div & 0x3ff,851 pll_fb_post_div & 0x7ff);852 853 if (radeon_crtc->crtc_id) {854 uint32_t pixclks_cntl = ((RREG32_PLL(RADEON_PIXCLKS_CNTL) &855 ~(RADEON_PIX2CLK_SRC_SEL_MASK)) |856 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK);857 858 if (is_tv) {859 radeon_legacy_tv_adjust_pll2(encoder, &htotal_cntl,860 &pll_ref_div, &pll_fb_post_div,861 &pixclks_cntl);862 }863 864 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,865 RADEON_PIX2CLK_SRC_SEL_CPUCLK,866 ~(RADEON_PIX2CLK_SRC_SEL_MASK));867 868 WREG32_PLL_P(RADEON_P2PLL_CNTL,869 RADEON_P2PLL_RESET870 | RADEON_P2PLL_ATOMIC_UPDATE_EN871 | ((uint32_t)pll_gain << RADEON_P2PLL_PVG_SHIFT),872 ~(RADEON_P2PLL_RESET873 | RADEON_P2PLL_ATOMIC_UPDATE_EN874 | RADEON_P2PLL_PVG_MASK));875 876 WREG32_PLL_P(RADEON_P2PLL_REF_DIV,877 pll_ref_div,878 ~RADEON_P2PLL_REF_DIV_MASK);879 880 WREG32_PLL_P(RADEON_P2PLL_DIV_0,881 pll_fb_post_div,882 ~RADEON_P2PLL_FB0_DIV_MASK);883 884 WREG32_PLL_P(RADEON_P2PLL_DIV_0,885 pll_fb_post_div,886 ~RADEON_P2PLL_POST0_DIV_MASK);887 888 radeon_pll2_write_update(dev);889 radeon_pll2_wait_for_read_update_complete(dev);890 891 WREG32_PLL(RADEON_HTOTAL2_CNTL, htotal_cntl);892 893 WREG32_PLL_P(RADEON_P2PLL_CNTL,894 0,895 ~(RADEON_P2PLL_RESET896 | RADEON_P2PLL_SLEEP897 | RADEON_P2PLL_ATOMIC_UPDATE_EN));898 899 DRM_DEBUG_KMS("Wrote2: 0x%08x 0x%08x 0x%08x (0x%08x)\n",900 (unsigned)pll_ref_div,901 (unsigned)pll_fb_post_div,902 (unsigned)htotal_cntl,903 RREG32_PLL(RADEON_P2PLL_CNTL));904 DRM_DEBUG_KMS("Wrote2: rd=%u, fd=%u, pd=%u\n",905 (unsigned)pll_ref_div & RADEON_P2PLL_REF_DIV_MASK,906 (unsigned)pll_fb_post_div & RADEON_P2PLL_FB0_DIV_MASK,907 (unsigned)((pll_fb_post_div &908 RADEON_P2PLL_POST0_DIV_MASK) >> 16));909 910 mdelay(50); /* Let the clock to lock */911 912 WREG32_PLL_P(RADEON_PIXCLKS_CNTL,913 RADEON_PIX2CLK_SRC_SEL_P2PLLCLK,914 ~(RADEON_PIX2CLK_SRC_SEL_MASK));915 916 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);917 } else {918 uint32_t pixclks_cntl;919 920 921 if (is_tv) {922 pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL);923 radeon_legacy_tv_adjust_pll1(encoder, &htotal_cntl, &pll_ref_div,924 &pll_fb_post_div, &pixclks_cntl);925 }926 927 if (rdev->flags & RADEON_IS_MOBILITY) {928 /* A temporal workaround for the occasional blanking on certain laptop panels.929 This appears to related to the PLL divider registers (fail to lock?).930 It occurs even when all dividers are the same with their old settings.931 In this case we really don't need to fiddle with PLL registers.932 By doing this we can avoid the blanking problem with some panels.933 */934 if ((pll_ref_div == (RREG32_PLL(RADEON_PPLL_REF_DIV) & RADEON_PPLL_REF_DIV_MASK)) &&935 (pll_fb_post_div == (RREG32_PLL(RADEON_PPLL_DIV_3) &936 (RADEON_PPLL_POST3_DIV_MASK | RADEON_PPLL_FB3_DIV_MASK)))) {937 WREG32_P(RADEON_CLOCK_CNTL_INDEX,938 RADEON_PLL_DIV_SEL,939 ~(RADEON_PLL_DIV_SEL));940 r100_pll_errata_after_index(rdev);941 return;942 }943 }944 945 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,946 RADEON_VCLK_SRC_SEL_CPUCLK,947 ~(RADEON_VCLK_SRC_SEL_MASK));948 WREG32_PLL_P(RADEON_PPLL_CNTL,949 RADEON_PPLL_RESET950 | RADEON_PPLL_ATOMIC_UPDATE_EN951 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN952 | ((uint32_t)pll_gain << RADEON_PPLL_PVG_SHIFT),953 ~(RADEON_PPLL_RESET954 | RADEON_PPLL_ATOMIC_UPDATE_EN955 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN956 | RADEON_PPLL_PVG_MASK));957 958 WREG32_P(RADEON_CLOCK_CNTL_INDEX,959 RADEON_PLL_DIV_SEL,960 ~(RADEON_PLL_DIV_SEL));961 r100_pll_errata_after_index(rdev);962 963 if (ASIC_IS_R300(rdev) ||964 (rdev->family == CHIP_RS300) ||965 (rdev->family == CHIP_RS400) ||966 (rdev->family == CHIP_RS480)) {967 if (pll_ref_div & R300_PPLL_REF_DIV_ACC_MASK) {968 /* When restoring console mode, use saved PPLL_REF_DIV969 * setting.970 */971 WREG32_PLL_P(RADEON_PPLL_REF_DIV,972 pll_ref_div,973 0);974 } else {975 /* R300 uses ref_div_acc field as real ref divider */976 WREG32_PLL_P(RADEON_PPLL_REF_DIV,977 (pll_ref_div << R300_PPLL_REF_DIV_ACC_SHIFT),978 ~R300_PPLL_REF_DIV_ACC_MASK);979 }980 } else981 WREG32_PLL_P(RADEON_PPLL_REF_DIV,982 pll_ref_div,983 ~RADEON_PPLL_REF_DIV_MASK);984 985 WREG32_PLL_P(RADEON_PPLL_DIV_3,986 pll_fb_post_div,987 ~RADEON_PPLL_FB3_DIV_MASK);988 989 WREG32_PLL_P(RADEON_PPLL_DIV_3,990 pll_fb_post_div,991 ~RADEON_PPLL_POST3_DIV_MASK);992 993 radeon_pll_write_update(dev);994 radeon_pll_wait_for_read_update_complete(dev);995 996 WREG32_PLL(RADEON_HTOTAL_CNTL, htotal_cntl);997 998 WREG32_PLL_P(RADEON_PPLL_CNTL,999 0,1000 ~(RADEON_PPLL_RESET1001 | RADEON_PPLL_SLEEP1002 | RADEON_PPLL_ATOMIC_UPDATE_EN1003 | RADEON_PPLL_VGA_ATOMIC_UPDATE_EN));1004 1005 DRM_DEBUG_KMS("Wrote: 0x%08x 0x%08x 0x%08x (0x%08x)\n",1006 pll_ref_div,1007 pll_fb_post_div,1008 (unsigned)htotal_cntl,1009 RREG32_PLL(RADEON_PPLL_CNTL));1010 DRM_DEBUG_KMS("Wrote: rd=%d, fd=%d, pd=%d\n",1011 pll_ref_div & RADEON_PPLL_REF_DIV_MASK,1012 pll_fb_post_div & RADEON_PPLL_FB3_DIV_MASK,1013 (pll_fb_post_div & RADEON_PPLL_POST3_DIV_MASK) >> 16);1014 1015 mdelay(50); /* Let the clock to lock */1016 1017 WREG32_PLL_P(RADEON_VCLK_ECP_CNTL,1018 RADEON_VCLK_SRC_SEL_PPLLCLK,1019 ~(RADEON_VCLK_SRC_SEL_MASK));1020 1021 if (is_tv)1022 WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);1023 }1024}1025 1026static bool radeon_crtc_mode_fixup(struct drm_crtc *crtc,1027 const struct drm_display_mode *mode,1028 struct drm_display_mode *adjusted_mode)1029{1030 if (!radeon_crtc_scaling_mode_fixup(crtc, mode, adjusted_mode))1031 return false;1032 return true;1033}1034 1035static int radeon_crtc_mode_set(struct drm_crtc *crtc,1036 struct drm_display_mode *mode,1037 struct drm_display_mode *adjusted_mode,1038 int x, int y, struct drm_framebuffer *old_fb)1039{1040 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);1041 1042 /* TODO TV */1043 radeon_crtc_set_base(crtc, x, y, old_fb);1044 radeon_set_crtc_timing(crtc, adjusted_mode);1045 radeon_set_pll(crtc, adjusted_mode);1046 radeon_overscan_setup(crtc, adjusted_mode);1047 if (radeon_crtc->crtc_id == 0) {1048 radeon_legacy_rmx_mode_set(crtc, adjusted_mode);1049 } else {1050 if (radeon_crtc->rmx_type != RMX_OFF) {1051 /* FIXME: only first crtc has rmx what should we1052 * do ?1053 */1054 DRM_ERROR("Mode need scaling but only first crtc can do that.\n");1055 }1056 }1057 radeon_cursor_reset(crtc);1058 return 0;1059}1060 1061static void radeon_crtc_prepare(struct drm_crtc *crtc)1062{1063 struct drm_device *dev = crtc->dev;1064 struct drm_crtc *crtci;1065 1066 /*1067 * The hardware wedges sometimes if you reconfigure one CRTC1068 * whilst another is running (see fdo bug #24611).1069 */1070 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head)1071 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_OFF);1072}1073 1074static void radeon_crtc_commit(struct drm_crtc *crtc)1075{1076 struct drm_device *dev = crtc->dev;1077 struct drm_crtc *crtci;1078 1079 /*1080 * Reenable the CRTCs that should be running.1081 */1082 list_for_each_entry(crtci, &dev->mode_config.crtc_list, head) {1083 if (crtci->enabled)1084 radeon_crtc_dpms(crtci, DRM_MODE_DPMS_ON);1085 }1086}1087 1088static void radeon_crtc_disable(struct drm_crtc *crtc)1089{1090 radeon_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);1091 if (crtc->primary->fb) {1092 int r;1093 struct radeon_bo *rbo;1094 1095 rbo = gem_to_radeon_bo(crtc->primary->fb->obj[0]);1096 r = radeon_bo_reserve(rbo, false);1097 if (unlikely(r))1098 DRM_ERROR("failed to reserve rbo before unpin\n");1099 else {1100 radeon_bo_unpin(rbo);1101 radeon_bo_unreserve(rbo);1102 }1103 }1104}1105 1106static const struct drm_crtc_helper_funcs legacy_helper_funcs = {1107 .dpms = radeon_crtc_dpms,1108 .mode_fixup = radeon_crtc_mode_fixup,1109 .mode_set = radeon_crtc_mode_set,1110 .mode_set_base = radeon_crtc_set_base,1111 .mode_set_base_atomic = radeon_crtc_set_base_atomic,1112 .prepare = radeon_crtc_prepare,1113 .commit = radeon_crtc_commit,1114 .disable = radeon_crtc_disable,1115 .get_scanout_position = radeon_get_crtc_scanout_position,1116};1117 1118 1119void radeon_legacy_init_crtc(struct drm_device *dev,1120 struct radeon_crtc *radeon_crtc)1121{1122 if (radeon_crtc->crtc_id == 1)1123 radeon_crtc->crtc_offset = RADEON_CRTC2_H_TOTAL_DISP - RADEON_CRTC_H_TOTAL_DISP;1124 drm_crtc_helper_add(&radeon_crtc->base, &legacy_helper_funcs);1125}1126