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 a
   6 * copy of this software and associated documentation files (the "Software"),
   7 * to deal in the Software without restriction, including without limitation
   8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9 * and/or sell copies of the Software, and to permit persons to whom the
  10 * Software is furnished to do so, subject to the following conditions:
  11 *
  12 * The above copyright notice and this permission notice shall be included in
  13 * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19 * 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 OR
  21 * OTHER DEALINGS IN THE SOFTWARE.
  22 *
  23 * Authors: Dave Airlie
  24 *          Alex Deucher
  25 */
  26#include <drm/drmP.h>
  27#include <drm/radeon_drm.h>
  28#include "radeon.h"
  29
  30#include "atom.h"
  31#include <asm/div64.h>
  32
  33#include <linux/pm_runtime.h>
  34#include <drm/drm_crtc_helper.h>
 
  35#include <drm/drm_plane_helper.h>
  36#include <drm/drm_edid.h>
  37
  38#include <linux/gcd.h>
  39
  40static void avivo_crtc_load_lut(struct drm_crtc *crtc)
  41{
  42	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  43	struct drm_device *dev = crtc->dev;
  44	struct radeon_device *rdev = dev->dev_private;
 
  45	int i;
  46
  47	DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
  48	WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
  49
  50	WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
  51	WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
  52	WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
  53
  54	WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
  55	WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
  56	WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
  57
  58	WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id);
  59	WREG32(AVIVO_DC_LUT_RW_MODE, 0);
  60	WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f);
  61
  62	WREG8(AVIVO_DC_LUT_RW_INDEX, 0);
 
 
 
  63	for (i = 0; i < 256; i++) {
  64		WREG32(AVIVO_DC_LUT_30_COLOR,
  65			     (radeon_crtc->lut_r[i] << 20) |
  66			     (radeon_crtc->lut_g[i] << 10) |
  67			     (radeon_crtc->lut_b[i] << 0));
  68	}
  69
  70	/* Only change bit 0 of LUT_SEL, other bits are set elsewhere */
  71	WREG32_P(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id, ~1);
  72}
  73
  74static void dce4_crtc_load_lut(struct drm_crtc *crtc)
  75{
  76	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
  77	struct drm_device *dev = crtc->dev;
  78	struct radeon_device *rdev = dev->dev_private;
 
  79	int i;
  80
  81	DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
  82	WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
  83
  84	WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
  85	WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
  86	WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
  87
  88	WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
  89	WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
  90	WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
  91
  92	WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
  93	WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
  94
  95	WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
 
 
 
  96	for (i = 0; i < 256; i++) {
  97		WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
  98		       (radeon_crtc->lut_r[i] << 20) |
  99		       (radeon_crtc->lut_g[i] << 10) |
 100		       (radeon_crtc->lut_b[i] << 0));
 101	}
 102}
 103
 104static void dce5_crtc_load_lut(struct drm_crtc *crtc)
 105{
 106	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 107	struct drm_device *dev = crtc->dev;
 108	struct radeon_device *rdev = dev->dev_private;
 
 109	int i;
 110
 111	DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
 112
 113	WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
 114	       (NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) |
 115		NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS)));
 116	WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset,
 117	       NI_GRPH_PRESCALE_BYPASS);
 118	WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset,
 119	       NI_OVL_PRESCALE_BYPASS);
 120	WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset,
 121	       (NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) |
 122		NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT)));
 123
 124	WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
 125
 126	WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
 127	WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
 128	WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
 129
 130	WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
 131	WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
 132	WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
 133
 134	WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
 135	WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
 136
 137	WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
 
 
 
 138	for (i = 0; i < 256; i++) {
 139		WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
 140		       (radeon_crtc->lut_r[i] << 20) |
 141		       (radeon_crtc->lut_g[i] << 10) |
 142		       (radeon_crtc->lut_b[i] << 0));
 143	}
 144
 145	WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset,
 146	       (NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
 147		NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
 148		NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
 149		NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS)));
 150	WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset,
 151	       (NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) |
 152		NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS)));
 153	WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset,
 154	       (NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
 155		NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
 156	WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
 157	       (NI_OUTPUT_CSC_GRPH_MODE(radeon_crtc->output_csc) |
 158		NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
 159	/* XXX match this to the depth of the crtc fmt block, move to modeset? */
 160	WREG32(0x6940 + radeon_crtc->crtc_offset, 0);
 161	if (ASIC_IS_DCE8(rdev)) {
 162		/* XXX this only needs to be programmed once per crtc at startup,
 163		 * not sure where the best place for it is
 164		 */
 165		WREG32(CIK_ALPHA_CONTROL + radeon_crtc->crtc_offset,
 166		       CIK_CURSOR_ALPHA_BLND_ENA);
 167	}
 168}
 169
 170static void legacy_crtc_load_lut(struct drm_crtc *crtc)
 171{
 172	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 173	struct drm_device *dev = crtc->dev;
 174	struct radeon_device *rdev = dev->dev_private;
 
 175	int i;
 176	uint32_t dac2_cntl;
 177
 178	dac2_cntl = RREG32(RADEON_DAC_CNTL2);
 179	if (radeon_crtc->crtc_id == 0)
 180		dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
 181	else
 182		dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
 183	WREG32(RADEON_DAC_CNTL2, dac2_cntl);
 184
 185	WREG8(RADEON_PALETTE_INDEX, 0);
 
 
 
 186	for (i = 0; i < 256; i++) {
 187		WREG32(RADEON_PALETTE_30_DATA,
 188			     (radeon_crtc->lut_r[i] << 20) |
 189			     (radeon_crtc->lut_g[i] << 10) |
 190			     (radeon_crtc->lut_b[i] << 0));
 191	}
 192}
 193
 194void radeon_crtc_load_lut(struct drm_crtc *crtc)
 195{
 196	struct drm_device *dev = crtc->dev;
 197	struct radeon_device *rdev = dev->dev_private;
 198
 199	if (!crtc->enabled)
 200		return;
 201
 202	if (ASIC_IS_DCE5(rdev))
 203		dce5_crtc_load_lut(crtc);
 204	else if (ASIC_IS_DCE4(rdev))
 205		dce4_crtc_load_lut(crtc);
 206	else if (ASIC_IS_AVIVO(rdev))
 207		avivo_crtc_load_lut(crtc);
 208	else
 209		legacy_crtc_load_lut(crtc);
 210}
 211
 212/** Sets the color ramps on behalf of fbcon */
 213void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 214			      u16 blue, int regno)
 215{
 216	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 217
 218	radeon_crtc->lut_r[regno] = red >> 6;
 219	radeon_crtc->lut_g[regno] = green >> 6;
 220	radeon_crtc->lut_b[regno] = blue >> 6;
 221}
 222
 223/** Gets the color ramps on behalf of fbcon */
 224void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
 225			      u16 *blue, int regno)
 226{
 227	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 228
 229	*red = radeon_crtc->lut_r[regno] << 6;
 230	*green = radeon_crtc->lut_g[regno] << 6;
 231	*blue = radeon_crtc->lut_b[regno] << 6;
 232}
 233
 234static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
 235				  u16 *blue, uint32_t start, uint32_t size)
 236{
 237	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 238	int end = (start + size > 256) ? 256 : start + size, i;
 239
 240	/* userspace palettes are always correct as is */
 241	for (i = start; i < end; i++) {
 242		radeon_crtc->lut_r[i] = red[i] >> 6;
 243		radeon_crtc->lut_g[i] = green[i] >> 6;
 244		radeon_crtc->lut_b[i] = blue[i] >> 6;
 245	}
 246	radeon_crtc_load_lut(crtc);
 
 
 247}
 248
 249static void radeon_crtc_destroy(struct drm_crtc *crtc)
 250{
 251	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 252
 253	drm_crtc_cleanup(crtc);
 254	destroy_workqueue(radeon_crtc->flip_queue);
 255	kfree(radeon_crtc);
 256}
 257
 258/**
 259 * radeon_unpin_work_func - unpin old buffer object
 260 *
 261 * @__work - kernel work item
 262 *
 263 * Unpin the old frame buffer object outside of the interrupt handler
 264 */
 265static void radeon_unpin_work_func(struct work_struct *__work)
 266{
 267	struct radeon_flip_work *work =
 268		container_of(__work, struct radeon_flip_work, unpin_work);
 269	int r;
 270
 271	/* unpin of the old buffer */
 272	r = radeon_bo_reserve(work->old_rbo, false);
 273	if (likely(r == 0)) {
 274		r = radeon_bo_unpin(work->old_rbo);
 275		if (unlikely(r != 0)) {
 276			DRM_ERROR("failed to unpin buffer after flip\n");
 277		}
 278		radeon_bo_unreserve(work->old_rbo);
 279	} else
 280		DRM_ERROR("failed to reserve buffer after flip\n");
 281
 282	drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
 283	kfree(work);
 284}
 285
 286void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id)
 287{
 288	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
 289	unsigned long flags;
 290	u32 update_pending;
 291	int vpos, hpos;
 292
 293	/* can happen during initialization */
 294	if (radeon_crtc == NULL)
 295		return;
 296
 297	/* Skip the pageflip completion check below (based on polling) on
 298	 * asics which reliably support hw pageflip completion irqs. pflip
 299	 * irqs are a reliable and race-free method of handling pageflip
 300	 * completion detection. A use_pflipirq module parameter < 2 allows
 301	 * to override this in case of asics with faulty pflip irqs.
 302	 * A module parameter of 0 would only use this polling based path,
 303	 * a parameter of 1 would use pflip irq only as a backup to this
 304	 * path, as in Linux 3.16.
 305	 */
 306	if ((radeon_use_pflipirq == 2) && ASIC_IS_DCE4(rdev))
 307		return;
 308
 309	spin_lock_irqsave(&rdev->ddev->event_lock, flags);
 310	if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
 311		DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
 312				 "RADEON_FLIP_SUBMITTED(%d)\n",
 313				 radeon_crtc->flip_status,
 314				 RADEON_FLIP_SUBMITTED);
 315		spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
 316		return;
 317	}
 318
 319	update_pending = radeon_page_flip_pending(rdev, crtc_id);
 320
 321	/* Has the pageflip already completed in crtc, or is it certain
 322	 * to complete in this vblank?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 323	 */
 324	if (update_pending &&
 325	    (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev,
 326							       crtc_id,
 327							       USE_REAL_VBLANKSTART,
 328							       &vpos, &hpos, NULL, NULL,
 329							       &rdev->mode_info.crtcs[crtc_id]->base.hwmode)) &&
 330	    ((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) ||
 331	     (vpos < 0 && !ASIC_IS_AVIVO(rdev)))) {
 332		/* crtc didn't flip in this target vblank interval,
 333		 * but flip is pending in crtc. Based on the current
 334		 * scanout position we know that the current frame is
 335		 * (nearly) complete and the flip will (likely)
 336		 * complete before the start of the next frame.
 337		 */
 338		update_pending = 0;
 339	}
 340	spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
 341	if (!update_pending)
 342		radeon_crtc_handle_flip(rdev, crtc_id);
 343}
 344
 345/**
 346 * radeon_crtc_handle_flip - page flip completed
 347 *
 348 * @rdev: radeon device pointer
 349 * @crtc_id: crtc number this event is for
 350 *
 351 * Called when we are sure that a page flip for this crtc is completed.
 352 */
 353void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
 354{
 355	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
 356	struct radeon_flip_work *work;
 357	unsigned long flags;
 358
 359	/* this can happen at init */
 360	if (radeon_crtc == NULL)
 361		return;
 362
 363	spin_lock_irqsave(&rdev->ddev->event_lock, flags);
 364	work = radeon_crtc->flip_work;
 365	if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
 366		DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
 367				 "RADEON_FLIP_SUBMITTED(%d)\n",
 368				 radeon_crtc->flip_status,
 369				 RADEON_FLIP_SUBMITTED);
 370		spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
 371		return;
 372	}
 373
 374	/* Pageflip completed. Clean up. */
 375	radeon_crtc->flip_status = RADEON_FLIP_NONE;
 376	radeon_crtc->flip_work = NULL;
 377
 378	/* wakeup userspace */
 379	if (work->event)
 380		drm_send_vblank_event(rdev->ddev, crtc_id, work->event);
 381
 382	spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
 383
 384	drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id);
 385	radeon_irq_kms_pflip_irq_put(rdev, work->crtc_id);
 386	queue_work(radeon_crtc->flip_queue, &work->unpin_work);
 387}
 388
 389/**
 390 * radeon_flip_work_func - page flip framebuffer
 391 *
 392 * @work - kernel work item
 393 *
 394 * Wait for the buffer object to become idle and do the actual page flip
 395 */
 396static void radeon_flip_work_func(struct work_struct *__work)
 397{
 398	struct radeon_flip_work *work =
 399		container_of(__work, struct radeon_flip_work, flip_work);
 400	struct radeon_device *rdev = work->rdev;
 
 401	struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[work->crtc_id];
 402
 403	struct drm_crtc *crtc = &radeon_crtc->base;
 404	unsigned long flags;
 405	int r;
 406	int vpos, hpos, stat, min_udelay = 0;
 407	unsigned repcnt = 4;
 408	struct drm_vblank_crtc *vblank = &crtc->dev->vblank[work->crtc_id];
 409
 410	down_read(&rdev->exclusive_lock);
 411	if (work->fence) {
 412		struct radeon_fence *fence;
 413
 414		fence = to_radeon_fence(work->fence);
 415		if (fence && fence->rdev == rdev) {
 416			r = radeon_fence_wait(fence, false);
 417			if (r == -EDEADLK) {
 418				up_read(&rdev->exclusive_lock);
 419				do {
 420					r = radeon_gpu_reset(rdev);
 421				} while (r == -EAGAIN);
 422				down_read(&rdev->exclusive_lock);
 423			}
 424		} else
 425			r = fence_wait(work->fence, false);
 426
 427		if (r)
 428			DRM_ERROR("failed to wait on page flip fence (%d)!\n", r);
 429
 430		/* We continue with the page flip even if we failed to wait on
 431		 * the fence, otherwise the DRM core and userspace will be
 432		 * confused about which BO the CRTC is scanning out
 433		 */
 434
 435		fence_put(work->fence);
 436		work->fence = NULL;
 437	}
 438
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 439	/* We borrow the event spin lock for protecting flip_status */
 440	spin_lock_irqsave(&crtc->dev->event_lock, flags);
 441
 442	/* set the proper interrupt */
 443	radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
 444
 445	/* If this happens to execute within the "virtually extended" vblank
 446	 * interval before the start of the real vblank interval then it needs
 447	 * to delay programming the mmio flip until the real vblank is entered.
 448	 * This prevents completing a flip too early due to the way we fudge
 449	 * our vblank counter and vblank timestamps in order to work around the
 450	 * problem that the hw fires vblank interrupts before actual start of
 451	 * vblank (when line buffer refilling is done for a frame). It
 452	 * complements the fudging logic in radeon_get_crtc_scanoutpos() for
 453	 * timestamping and radeon_get_vblank_counter_kms() for vblank counts.
 454	 *
 455	 * In practice this won't execute very often unless on very fast
 456	 * machines because the time window for this to happen is very small.
 457	 */
 458	while (radeon_crtc->enabled && --repcnt) {
 459		/* GET_DISTANCE_TO_VBLANKSTART returns distance to real vblank
 460		 * start in hpos, and to the "fudged earlier" vblank start in
 461		 * vpos.
 462		 */
 463		stat = radeon_get_crtc_scanoutpos(rdev->ddev, work->crtc_id,
 464						  GET_DISTANCE_TO_VBLANKSTART,
 465						  &vpos, &hpos, NULL, NULL,
 466						  &crtc->hwmode);
 467
 468		if ((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
 469		    (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE) ||
 470		    !(vpos >= 0 && hpos <= 0))
 471			break;
 472
 473		/* Sleep at least until estimated real start of hw vblank */
 474		min_udelay = (-hpos + 1) * max(vblank->linedur_ns / 1000, 5);
 475		if (min_udelay > vblank->framedur_ns / 2000) {
 476			/* Don't wait ridiculously long - something is wrong */
 477			repcnt = 0;
 478			break;
 479		}
 480		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 481		usleep_range(min_udelay, 2 * min_udelay);
 482		spin_lock_irqsave(&crtc->dev->event_lock, flags);
 483	};
 484
 485	if (!repcnt)
 486		DRM_DEBUG_DRIVER("Delay problem on crtc %d: min_udelay %d, "
 487				 "framedur %d, linedur %d, stat %d, vpos %d, "
 488				 "hpos %d\n", work->crtc_id, min_udelay,
 489				 vblank->framedur_ns / 1000,
 490				 vblank->linedur_ns / 1000, stat, vpos, hpos);
 491
 492	/* do the flip (mmio) */
 493	radeon_page_flip(rdev, radeon_crtc->crtc_id, work->base);
 494
 495	radeon_crtc->flip_status = RADEON_FLIP_SUBMITTED;
 496	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 497	up_read(&rdev->exclusive_lock);
 498}
 499
 500static int radeon_crtc_page_flip(struct drm_crtc *crtc,
 501				 struct drm_framebuffer *fb,
 502				 struct drm_pending_vblank_event *event,
 503				 uint32_t page_flip_flags)
 
 
 504{
 505	struct drm_device *dev = crtc->dev;
 506	struct radeon_device *rdev = dev->dev_private;
 507	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 508	struct radeon_framebuffer *old_radeon_fb;
 509	struct radeon_framebuffer *new_radeon_fb;
 510	struct drm_gem_object *obj;
 511	struct radeon_flip_work *work;
 512	struct radeon_bo *new_rbo;
 513	uint32_t tiling_flags, pitch_pixels;
 514	uint64_t base;
 515	unsigned long flags;
 516	int r;
 517
 518	work = kzalloc(sizeof *work, GFP_KERNEL);
 519	if (work == NULL)
 520		return -ENOMEM;
 521
 522	INIT_WORK(&work->flip_work, radeon_flip_work_func);
 523	INIT_WORK(&work->unpin_work, radeon_unpin_work_func);
 524
 525	work->rdev = rdev;
 526	work->crtc_id = radeon_crtc->crtc_id;
 527	work->event = event;
 
 528
 529	/* schedule unpin of the old buffer */
 530	old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
 531	obj = old_radeon_fb->obj;
 532
 533	/* take a reference to the old object */
 534	drm_gem_object_reference(obj);
 535	work->old_rbo = gem_to_radeon_bo(obj);
 536
 537	new_radeon_fb = to_radeon_framebuffer(fb);
 538	obj = new_radeon_fb->obj;
 539	new_rbo = gem_to_radeon_bo(obj);
 540
 541	/* pin the new buffer */
 542	DRM_DEBUG_DRIVER("flip-ioctl() cur_rbo = %p, new_rbo = %p\n",
 543			 work->old_rbo, new_rbo);
 544
 545	r = radeon_bo_reserve(new_rbo, false);
 546	if (unlikely(r != 0)) {
 547		DRM_ERROR("failed to reserve new rbo buffer before flip\n");
 548		goto cleanup;
 549	}
 550	/* Only 27 bit offset for legacy CRTC */
 551	r = radeon_bo_pin_restricted(new_rbo, RADEON_GEM_DOMAIN_VRAM,
 552				     ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
 553	if (unlikely(r != 0)) {
 554		radeon_bo_unreserve(new_rbo);
 555		r = -EINVAL;
 556		DRM_ERROR("failed to pin new rbo buffer before flip\n");
 557		goto cleanup;
 558	}
 559	work->fence = fence_get(reservation_object_get_excl(new_rbo->tbo.resv));
 560	radeon_bo_get_tiling_flags(new_rbo, &tiling_flags, NULL);
 561	radeon_bo_unreserve(new_rbo);
 562
 563	if (!ASIC_IS_AVIVO(rdev)) {
 564		/* crtc offset is from display base addr not FB location */
 565		base -= radeon_crtc->legacy_display_base_addr;
 566		pitch_pixels = fb->pitches[0] / (fb->bits_per_pixel / 8);
 567
 568		if (tiling_flags & RADEON_TILING_MACRO) {
 569			if (ASIC_IS_R300(rdev)) {
 570				base &= ~0x7ff;
 571			} else {
 572				int byteshift = fb->bits_per_pixel >> 4;
 573				int tile_addr = (((crtc->y >> 3) * pitch_pixels +  crtc->x) >> (8 - byteshift)) << 11;
 574				base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8);
 575			}
 576		} else {
 577			int offset = crtc->y * pitch_pixels + crtc->x;
 578			switch (fb->bits_per_pixel) {
 579			case 8:
 580			default:
 581				offset *= 1;
 582				break;
 583			case 15:
 584			case 16:
 585				offset *= 2;
 586				break;
 587			case 24:
 588				offset *= 3;
 589				break;
 590			case 32:
 591				offset *= 4;
 592				break;
 593			}
 594			base += offset;
 595		}
 596		base &= ~7;
 597	}
 598	work->base = base;
 599
 600	r = drm_vblank_get(crtc->dev, radeon_crtc->crtc_id);
 601	if (r) {
 602		DRM_ERROR("failed to get vblank before flip\n");
 603		goto pflip_cleanup;
 604	}
 605
 606	/* We borrow the event spin lock for protecting flip_work */
 607	spin_lock_irqsave(&crtc->dev->event_lock, flags);
 608
 609	if (radeon_crtc->flip_status != RADEON_FLIP_NONE) {
 610		DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
 611		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 612		r = -EBUSY;
 613		goto vblank_cleanup;
 614	}
 615	radeon_crtc->flip_status = RADEON_FLIP_PENDING;
 616	radeon_crtc->flip_work = work;
 617
 618	/* update crtc fb */
 619	crtc->primary->fb = fb;
 620
 621	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 622
 623	queue_work(radeon_crtc->flip_queue, &work->flip_work);
 624	return 0;
 625
 626vblank_cleanup:
 627	drm_vblank_put(crtc->dev, radeon_crtc->crtc_id);
 628
 629pflip_cleanup:
 630	if (unlikely(radeon_bo_reserve(new_rbo, false) != 0)) {
 631		DRM_ERROR("failed to reserve new rbo in error path\n");
 632		goto cleanup;
 633	}
 634	if (unlikely(radeon_bo_unpin(new_rbo) != 0)) {
 635		DRM_ERROR("failed to unpin new rbo in error path\n");
 636	}
 637	radeon_bo_unreserve(new_rbo);
 638
 639cleanup:
 640	drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
 641	fence_put(work->fence);
 642	kfree(work);
 643	return r;
 644}
 645
 646static int
 647radeon_crtc_set_config(struct drm_mode_set *set)
 
 648{
 649	struct drm_device *dev;
 650	struct radeon_device *rdev;
 651	struct drm_crtc *crtc;
 652	bool active = false;
 653	int ret;
 654
 655	if (!set || !set->crtc)
 656		return -EINVAL;
 657
 658	dev = set->crtc->dev;
 659
 660	ret = pm_runtime_get_sync(dev->dev);
 661	if (ret < 0)
 662		return ret;
 663
 664	ret = drm_crtc_helper_set_config(set);
 665
 666	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 667		if (crtc->enabled)
 668			active = true;
 669
 670	pm_runtime_mark_last_busy(dev->dev);
 671
 672	rdev = dev->dev_private;
 673	/* if we have active crtcs and we don't have a power ref,
 674	   take the current one */
 675	if (active && !rdev->have_disp_power_ref) {
 676		rdev->have_disp_power_ref = true;
 677		return ret;
 678	}
 679	/* if we have no active crtcs, then drop the power ref
 680	   we got before */
 681	if (!active && rdev->have_disp_power_ref) {
 682		pm_runtime_put_autosuspend(dev->dev);
 683		rdev->have_disp_power_ref = false;
 684	}
 685
 686	/* drop the power reference we got coming in here */
 687	pm_runtime_put_autosuspend(dev->dev);
 688	return ret;
 689}
 
 690static const struct drm_crtc_funcs radeon_crtc_funcs = {
 691	.cursor_set2 = radeon_crtc_cursor_set2,
 692	.cursor_move = radeon_crtc_cursor_move,
 693	.gamma_set = radeon_crtc_gamma_set,
 694	.set_config = radeon_crtc_set_config,
 695	.destroy = radeon_crtc_destroy,
 696	.page_flip = radeon_crtc_page_flip,
 697};
 698
 699static void radeon_crtc_init(struct drm_device *dev, int index)
 700{
 701	struct radeon_device *rdev = dev->dev_private;
 702	struct radeon_crtc *radeon_crtc;
 703	int i;
 704
 705	radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
 706	if (radeon_crtc == NULL)
 707		return;
 708
 709	drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
 710
 711	drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
 712	radeon_crtc->crtc_id = index;
 713	radeon_crtc->flip_queue = create_singlethread_workqueue("radeon-crtc");
 714	rdev->mode_info.crtcs[index] = radeon_crtc;
 715
 716	if (rdev->family >= CHIP_BONAIRE) {
 717		radeon_crtc->max_cursor_width = CIK_CURSOR_WIDTH;
 718		radeon_crtc->max_cursor_height = CIK_CURSOR_HEIGHT;
 719	} else {
 720		radeon_crtc->max_cursor_width = CURSOR_WIDTH;
 721		radeon_crtc->max_cursor_height = CURSOR_HEIGHT;
 722	}
 723	dev->mode_config.cursor_width = radeon_crtc->max_cursor_width;
 724	dev->mode_config.cursor_height = radeon_crtc->max_cursor_height;
 725
 726#if 0
 727	radeon_crtc->mode_set.crtc = &radeon_crtc->base;
 728	radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
 729	radeon_crtc->mode_set.num_connectors = 0;
 730#endif
 731
 732	for (i = 0; i < 256; i++) {
 733		radeon_crtc->lut_r[i] = i << 2;
 734		radeon_crtc->lut_g[i] = i << 2;
 735		radeon_crtc->lut_b[i] = i << 2;
 736	}
 737
 738	if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
 739		radeon_atombios_init_crtc(dev, radeon_crtc);
 740	else
 741		radeon_legacy_init_crtc(dev, radeon_crtc);
 742}
 743
 744static const char *encoder_names[38] = {
 745	"NONE",
 746	"INTERNAL_LVDS",
 747	"INTERNAL_TMDS1",
 748	"INTERNAL_TMDS2",
 749	"INTERNAL_DAC1",
 750	"INTERNAL_DAC2",
 751	"INTERNAL_SDVOA",
 752	"INTERNAL_SDVOB",
 753	"SI170B",
 754	"CH7303",
 755	"CH7301",
 756	"INTERNAL_DVO1",
 757	"EXTERNAL_SDVOA",
 758	"EXTERNAL_SDVOB",
 759	"TITFP513",
 760	"INTERNAL_LVTM1",
 761	"VT1623",
 762	"HDMI_SI1930",
 763	"HDMI_INTERNAL",
 764	"INTERNAL_KLDSCP_TMDS1",
 765	"INTERNAL_KLDSCP_DVO1",
 766	"INTERNAL_KLDSCP_DAC1",
 767	"INTERNAL_KLDSCP_DAC2",
 768	"SI178",
 769	"MVPU_FPGA",
 770	"INTERNAL_DDI",
 771	"VT1625",
 772	"HDMI_SI1932",
 773	"DP_AN9801",
 774	"DP_DP501",
 775	"INTERNAL_UNIPHY",
 776	"INTERNAL_KLDSCP_LVTMA",
 777	"INTERNAL_UNIPHY1",
 778	"INTERNAL_UNIPHY2",
 779	"NUTMEG",
 780	"TRAVIS",
 781	"INTERNAL_VCE",
 782	"INTERNAL_UNIPHY3",
 783};
 784
 785static const char *hpd_names[6] = {
 786	"HPD1",
 787	"HPD2",
 788	"HPD3",
 789	"HPD4",
 790	"HPD5",
 791	"HPD6",
 792};
 793
 794static void radeon_print_display_setup(struct drm_device *dev)
 795{
 796	struct drm_connector *connector;
 797	struct radeon_connector *radeon_connector;
 798	struct drm_encoder *encoder;
 799	struct radeon_encoder *radeon_encoder;
 800	uint32_t devices;
 801	int i = 0;
 802
 803	DRM_INFO("Radeon Display Connectors\n");
 804	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 805		radeon_connector = to_radeon_connector(connector);
 806		DRM_INFO("Connector %d:\n", i);
 807		DRM_INFO("  %s\n", connector->name);
 808		if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
 809			DRM_INFO("  %s\n", hpd_names[radeon_connector->hpd.hpd]);
 810		if (radeon_connector->ddc_bus) {
 811			DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 812				 radeon_connector->ddc_bus->rec.mask_clk_reg,
 813				 radeon_connector->ddc_bus->rec.mask_data_reg,
 814				 radeon_connector->ddc_bus->rec.a_clk_reg,
 815				 radeon_connector->ddc_bus->rec.a_data_reg,
 816				 radeon_connector->ddc_bus->rec.en_clk_reg,
 817				 radeon_connector->ddc_bus->rec.en_data_reg,
 818				 radeon_connector->ddc_bus->rec.y_clk_reg,
 819				 radeon_connector->ddc_bus->rec.y_data_reg);
 820			if (radeon_connector->router.ddc_valid)
 821				DRM_INFO("  DDC Router 0x%x/0x%x\n",
 822					 radeon_connector->router.ddc_mux_control_pin,
 823					 radeon_connector->router.ddc_mux_state);
 824			if (radeon_connector->router.cd_valid)
 825				DRM_INFO("  Clock/Data Router 0x%x/0x%x\n",
 826					 radeon_connector->router.cd_mux_control_pin,
 827					 radeon_connector->router.cd_mux_state);
 828		} else {
 829			if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
 830			    connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 831			    connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 832			    connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
 833			    connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 834			    connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
 835				DRM_INFO("  DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
 836		}
 837		DRM_INFO("  Encoders:\n");
 838		list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 839			radeon_encoder = to_radeon_encoder(encoder);
 840			devices = radeon_encoder->devices & radeon_connector->devices;
 841			if (devices) {
 842				if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 843					DRM_INFO("    CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 844				if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 845					DRM_INFO("    CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 846				if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 847					DRM_INFO("    LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 848				if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 849					DRM_INFO("    DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 850				if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 851					DRM_INFO("    DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
 852				if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 853					DRM_INFO("    DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
 854				if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 855					DRM_INFO("    DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
 856				if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 857					DRM_INFO("    DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
 858				if (devices & ATOM_DEVICE_DFP6_SUPPORT)
 859					DRM_INFO("    DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]);
 860				if (devices & ATOM_DEVICE_TV1_SUPPORT)
 861					DRM_INFO("    TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
 862				if (devices & ATOM_DEVICE_CV_SUPPORT)
 863					DRM_INFO("    CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
 864			}
 865		}
 866		i++;
 867	}
 868}
 869
 870static bool radeon_setup_enc_conn(struct drm_device *dev)
 871{
 872	struct radeon_device *rdev = dev->dev_private;
 873	bool ret = false;
 874
 875	if (rdev->bios) {
 876		if (rdev->is_atom_bios) {
 877			ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
 878			if (ret == false)
 879				ret = radeon_get_atom_connector_info_from_object_table(dev);
 880		} else {
 881			ret = radeon_get_legacy_connector_info_from_bios(dev);
 882			if (ret == false)
 883				ret = radeon_get_legacy_connector_info_from_table(dev);
 884		}
 885	} else {
 886		if (!ASIC_IS_AVIVO(rdev))
 887			ret = radeon_get_legacy_connector_info_from_table(dev);
 888	}
 889	if (ret) {
 890		radeon_setup_encoder_clones(dev);
 891		radeon_print_display_setup(dev);
 892	}
 893
 894	return ret;
 895}
 896
 897/* avivo */
 898
 899/**
 900 * avivo_reduce_ratio - fractional number reduction
 901 *
 902 * @nom: nominator
 903 * @den: denominator
 904 * @nom_min: minimum value for nominator
 905 * @den_min: minimum value for denominator
 906 *
 907 * Find the greatest common divisor and apply it on both nominator and
 908 * denominator, but make nominator and denominator are at least as large
 909 * as their minimum values.
 910 */
 911static void avivo_reduce_ratio(unsigned *nom, unsigned *den,
 912			       unsigned nom_min, unsigned den_min)
 913{
 914	unsigned tmp;
 915
 916	/* reduce the numbers to a simpler ratio */
 917	tmp = gcd(*nom, *den);
 918	*nom /= tmp;
 919	*den /= tmp;
 920
 921	/* make sure nominator is large enough */
 922	if (*nom < nom_min) {
 923		tmp = DIV_ROUND_UP(nom_min, *nom);
 924		*nom *= tmp;
 925		*den *= tmp;
 926	}
 927
 928	/* make sure the denominator is large enough */
 929	if (*den < den_min) {
 930		tmp = DIV_ROUND_UP(den_min, *den);
 931		*nom *= tmp;
 932		*den *= tmp;
 933	}
 934}
 935
 936/**
 937 * avivo_get_fb_ref_div - feedback and ref divider calculation
 938 *
 939 * @nom: nominator
 940 * @den: denominator
 941 * @post_div: post divider
 942 * @fb_div_max: feedback divider maximum
 943 * @ref_div_max: reference divider maximum
 944 * @fb_div: resulting feedback divider
 945 * @ref_div: resulting reference divider
 946 *
 947 * Calculate feedback and reference divider for a given post divider. Makes
 948 * sure we stay within the limits.
 949 */
 950static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
 951				 unsigned fb_div_max, unsigned ref_div_max,
 952				 unsigned *fb_div, unsigned *ref_div)
 953{
 954	/* limit reference * post divider to a maximum */
 955	ref_div_max = max(min(100 / post_div, ref_div_max), 1u);
 956
 957	/* get matching reference and feedback divider */
 958	*ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
 959	*fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
 960
 961	/* limit fb divider to its maximum */
 962	if (*fb_div > fb_div_max) {
 963		*ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
 964		*fb_div = fb_div_max;
 965	}
 966}
 967
 968/**
 969 * radeon_compute_pll_avivo - compute PLL paramaters
 970 *
 971 * @pll: information about the PLL
 972 * @dot_clock_p: resulting pixel clock
 973 * fb_div_p: resulting feedback divider
 974 * frac_fb_div_p: fractional part of the feedback divider
 975 * ref_div_p: resulting reference divider
 976 * post_div_p: resulting reference divider
 977 *
 978 * Try to calculate the PLL parameters to generate the given frequency:
 979 * dot_clock = (ref_freq * feedback_div) / (ref_div * post_div)
 980 */
 981void radeon_compute_pll_avivo(struct radeon_pll *pll,
 982			      u32 freq,
 983			      u32 *dot_clock_p,
 984			      u32 *fb_div_p,
 985			      u32 *frac_fb_div_p,
 986			      u32 *ref_div_p,
 987			      u32 *post_div_p)
 988{
 989	unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ?
 990		freq : freq / 10;
 991
 992	unsigned fb_div_min, fb_div_max, fb_div;
 993	unsigned post_div_min, post_div_max, post_div;
 994	unsigned ref_div_min, ref_div_max, ref_div;
 995	unsigned post_div_best, diff_best;
 996	unsigned nom, den;
 997
 998	/* determine allowed feedback divider range */
 999	fb_div_min = pll->min_feedback_div;
1000	fb_div_max = pll->max_feedback_div;
1001
1002	if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1003		fb_div_min *= 10;
1004		fb_div_max *= 10;
1005	}
1006
1007	/* determine allowed ref divider range */
1008	if (pll->flags & RADEON_PLL_USE_REF_DIV)
1009		ref_div_min = pll->reference_div;
1010	else
1011		ref_div_min = pll->min_ref_div;
1012
1013	if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV &&
1014	    pll->flags & RADEON_PLL_USE_REF_DIV)
1015		ref_div_max = pll->reference_div;
1016	else if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
1017		/* fix for problems on RS880 */
1018		ref_div_max = min(pll->max_ref_div, 7u);
1019	else
1020		ref_div_max = pll->max_ref_div;
1021
1022	/* determine allowed post divider range */
1023	if (pll->flags & RADEON_PLL_USE_POST_DIV) {
1024		post_div_min = pll->post_div;
1025		post_div_max = pll->post_div;
1026	} else {
1027		unsigned vco_min, vco_max;
1028
1029		if (pll->flags & RADEON_PLL_IS_LCD) {
1030			vco_min = pll->lcd_pll_out_min;
1031			vco_max = pll->lcd_pll_out_max;
1032		} else {
1033			vco_min = pll->pll_out_min;
1034			vco_max = pll->pll_out_max;
1035		}
1036
1037		if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1038			vco_min *= 10;
1039			vco_max *= 10;
1040		}
1041
1042		post_div_min = vco_min / target_clock;
1043		if ((target_clock * post_div_min) < vco_min)
1044			++post_div_min;
1045		if (post_div_min < pll->min_post_div)
1046			post_div_min = pll->min_post_div;
1047
1048		post_div_max = vco_max / target_clock;
1049		if ((target_clock * post_div_max) > vco_max)
1050			--post_div_max;
1051		if (post_div_max > pll->max_post_div)
1052			post_div_max = pll->max_post_div;
1053	}
1054
1055	/* represent the searched ratio as fractional number */
1056	nom = target_clock;
1057	den = pll->reference_freq;
1058
1059	/* reduce the numbers to a simpler ratio */
1060	avivo_reduce_ratio(&nom, &den, fb_div_min, post_div_min);
1061
1062	/* now search for a post divider */
1063	if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
1064		post_div_best = post_div_min;
1065	else
1066		post_div_best = post_div_max;
1067	diff_best = ~0;
1068
1069	for (post_div = post_div_min; post_div <= post_div_max; ++post_div) {
1070		unsigned diff;
1071		avivo_get_fb_ref_div(nom, den, post_div, fb_div_max,
1072				     ref_div_max, &fb_div, &ref_div);
1073		diff = abs(target_clock - (pll->reference_freq * fb_div) /
1074			(ref_div * post_div));
1075
1076		if (diff < diff_best || (diff == diff_best &&
1077		    !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
1078
1079			post_div_best = post_div;
1080			diff_best = diff;
1081		}
1082	}
1083	post_div = post_div_best;
1084
1085	/* get the feedback and reference divider for the optimal value */
1086	avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
1087			     &fb_div, &ref_div);
1088
1089	/* reduce the numbers to a simpler ratio once more */
1090	/* this also makes sure that the reference divider is large enough */
1091	avivo_reduce_ratio(&fb_div, &ref_div, fb_div_min, ref_div_min);
1092
1093	/* avoid high jitter with small fractional dividers */
1094	if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV && (fb_div % 10)) {
1095		fb_div_min = max(fb_div_min, (9 - (fb_div % 10)) * 20 + 50);
1096		if (fb_div < fb_div_min) {
1097			unsigned tmp = DIV_ROUND_UP(fb_div_min, fb_div);
1098			fb_div *= tmp;
1099			ref_div *= tmp;
1100		}
1101	}
1102
1103	/* and finally save the result */
1104	if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1105		*fb_div_p = fb_div / 10;
1106		*frac_fb_div_p = fb_div % 10;
1107	} else {
1108		*fb_div_p = fb_div;
1109		*frac_fb_div_p = 0;
1110	}
1111
1112	*dot_clock_p = ((pll->reference_freq * *fb_div_p * 10) +
1113			(pll->reference_freq * *frac_fb_div_p)) /
1114		       (ref_div * post_div * 10);
1115	*ref_div_p = ref_div;
1116	*post_div_p = post_div;
1117
1118	DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1119		      freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
1120		      ref_div, post_div);
1121}
1122
1123/* pre-avivo */
1124static inline uint32_t radeon_div(uint64_t n, uint32_t d)
1125{
1126	uint64_t mod;
1127
1128	n += d / 2;
1129
1130	mod = do_div(n, d);
1131	return n;
1132}
1133
1134void radeon_compute_pll_legacy(struct radeon_pll *pll,
1135			       uint64_t freq,
1136			       uint32_t *dot_clock_p,
1137			       uint32_t *fb_div_p,
1138			       uint32_t *frac_fb_div_p,
1139			       uint32_t *ref_div_p,
1140			       uint32_t *post_div_p)
1141{
1142	uint32_t min_ref_div = pll->min_ref_div;
1143	uint32_t max_ref_div = pll->max_ref_div;
1144	uint32_t min_post_div = pll->min_post_div;
1145	uint32_t max_post_div = pll->max_post_div;
1146	uint32_t min_fractional_feed_div = 0;
1147	uint32_t max_fractional_feed_div = 0;
1148	uint32_t best_vco = pll->best_vco;
1149	uint32_t best_post_div = 1;
1150	uint32_t best_ref_div = 1;
1151	uint32_t best_feedback_div = 1;
1152	uint32_t best_frac_feedback_div = 0;
1153	uint32_t best_freq = -1;
1154	uint32_t best_error = 0xffffffff;
1155	uint32_t best_vco_diff = 1;
1156	uint32_t post_div;
1157	u32 pll_out_min, pll_out_max;
1158
1159	DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
1160	freq = freq * 1000;
1161
1162	if (pll->flags & RADEON_PLL_IS_LCD) {
1163		pll_out_min = pll->lcd_pll_out_min;
1164		pll_out_max = pll->lcd_pll_out_max;
1165	} else {
1166		pll_out_min = pll->pll_out_min;
1167		pll_out_max = pll->pll_out_max;
1168	}
1169
1170	if (pll_out_min > 64800)
1171		pll_out_min = 64800;
1172
1173	if (pll->flags & RADEON_PLL_USE_REF_DIV)
1174		min_ref_div = max_ref_div = pll->reference_div;
1175	else {
1176		while (min_ref_div < max_ref_div-1) {
1177			uint32_t mid = (min_ref_div + max_ref_div) / 2;
1178			uint32_t pll_in = pll->reference_freq / mid;
1179			if (pll_in < pll->pll_in_min)
1180				max_ref_div = mid;
1181			else if (pll_in > pll->pll_in_max)
1182				min_ref_div = mid;
1183			else
1184				break;
1185		}
1186	}
1187
1188	if (pll->flags & RADEON_PLL_USE_POST_DIV)
1189		min_post_div = max_post_div = pll->post_div;
1190
1191	if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
1192		min_fractional_feed_div = pll->min_frac_feedback_div;
1193		max_fractional_feed_div = pll->max_frac_feedback_div;
1194	}
1195
1196	for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
1197		uint32_t ref_div;
1198
1199		if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
1200			continue;
1201
1202		/* legacy radeons only have a few post_divs */
1203		if (pll->flags & RADEON_PLL_LEGACY) {
1204			if ((post_div == 5) ||
1205			    (post_div == 7) ||
1206			    (post_div == 9) ||
1207			    (post_div == 10) ||
1208			    (post_div == 11) ||
1209			    (post_div == 13) ||
1210			    (post_div == 14) ||
1211			    (post_div == 15))
1212				continue;
1213		}
1214
1215		for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
1216			uint32_t feedback_div, current_freq = 0, error, vco_diff;
1217			uint32_t pll_in = pll->reference_freq / ref_div;
1218			uint32_t min_feed_div = pll->min_feedback_div;
1219			uint32_t max_feed_div = pll->max_feedback_div + 1;
1220
1221			if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
1222				continue;
1223
1224			while (min_feed_div < max_feed_div) {
1225				uint32_t vco;
1226				uint32_t min_frac_feed_div = min_fractional_feed_div;
1227				uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
1228				uint32_t frac_feedback_div;
1229				uint64_t tmp;
1230
1231				feedback_div = (min_feed_div + max_feed_div) / 2;
1232
1233				tmp = (uint64_t)pll->reference_freq * feedback_div;
1234				vco = radeon_div(tmp, ref_div);
1235
1236				if (vco < pll_out_min) {
1237					min_feed_div = feedback_div + 1;
1238					continue;
1239				} else if (vco > pll_out_max) {
1240					max_feed_div = feedback_div;
1241					continue;
1242				}
1243
1244				while (min_frac_feed_div < max_frac_feed_div) {
1245					frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
1246					tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
1247					tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
1248					current_freq = radeon_div(tmp, ref_div * post_div);
1249
1250					if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
1251						if (freq < current_freq)
1252							error = 0xffffffff;
1253						else
1254							error = freq - current_freq;
1255					} else
1256						error = abs(current_freq - freq);
1257					vco_diff = abs(vco - best_vco);
1258
1259					if ((best_vco == 0 && error < best_error) ||
1260					    (best_vco != 0 &&
1261					     ((best_error > 100 && error < best_error - 100) ||
1262					      (abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
1263						best_post_div = post_div;
1264						best_ref_div = ref_div;
1265						best_feedback_div = feedback_div;
1266						best_frac_feedback_div = frac_feedback_div;
1267						best_freq = current_freq;
1268						best_error = error;
1269						best_vco_diff = vco_diff;
1270					} else if (current_freq == freq) {
1271						if (best_freq == -1) {
1272							best_post_div = post_div;
1273							best_ref_div = ref_div;
1274							best_feedback_div = feedback_div;
1275							best_frac_feedback_div = frac_feedback_div;
1276							best_freq = current_freq;
1277							best_error = error;
1278							best_vco_diff = vco_diff;
1279						} else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
1280							   ((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
1281							   ((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
1282							   ((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
1283							   ((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
1284							   ((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
1285							best_post_div = post_div;
1286							best_ref_div = ref_div;
1287							best_feedback_div = feedback_div;
1288							best_frac_feedback_div = frac_feedback_div;
1289							best_freq = current_freq;
1290							best_error = error;
1291							best_vco_diff = vco_diff;
1292						}
1293					}
1294					if (current_freq < freq)
1295						min_frac_feed_div = frac_feedback_div + 1;
1296					else
1297						max_frac_feed_div = frac_feedback_div;
1298				}
1299				if (current_freq < freq)
1300					min_feed_div = feedback_div + 1;
1301				else
1302					max_feed_div = feedback_div;
1303			}
1304		}
1305	}
1306
1307	*dot_clock_p = best_freq / 10000;
1308	*fb_div_p = best_feedback_div;
1309	*frac_fb_div_p = best_frac_feedback_div;
1310	*ref_div_p = best_ref_div;
1311	*post_div_p = best_post_div;
1312	DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
1313		      (long long)freq,
1314		      best_freq / 1000, best_feedback_div, best_frac_feedback_div,
1315		      best_ref_div, best_post_div);
1316
1317}
1318
1319static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
1320{
1321	struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1322
1323	if (radeon_fb->obj) {
1324		drm_gem_object_unreference_unlocked(radeon_fb->obj);
1325	}
1326	drm_framebuffer_cleanup(fb);
1327	kfree(radeon_fb);
1328}
1329
1330static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
1331						  struct drm_file *file_priv,
1332						  unsigned int *handle)
1333{
1334	struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
1335
1336	return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
1337}
1338
1339static const struct drm_framebuffer_funcs radeon_fb_funcs = {
1340	.destroy = radeon_user_framebuffer_destroy,
1341	.create_handle = radeon_user_framebuffer_create_handle,
1342};
1343
1344int
1345radeon_framebuffer_init(struct drm_device *dev,
1346			struct radeon_framebuffer *rfb,
1347			const struct drm_mode_fb_cmd2 *mode_cmd,
1348			struct drm_gem_object *obj)
1349{
1350	int ret;
1351	rfb->obj = obj;
1352	drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
1353	ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
1354	if (ret) {
1355		rfb->obj = NULL;
1356		return ret;
1357	}
1358	return 0;
1359}
1360
1361static struct drm_framebuffer *
1362radeon_user_framebuffer_create(struct drm_device *dev,
1363			       struct drm_file *file_priv,
1364			       const struct drm_mode_fb_cmd2 *mode_cmd)
1365{
1366	struct drm_gem_object *obj;
1367	struct radeon_framebuffer *radeon_fb;
1368	int ret;
1369
1370	obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
1371	if (obj ==  NULL) {
1372		dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
1373			"can't create framebuffer\n", mode_cmd->handles[0]);
1374		return ERR_PTR(-ENOENT);
1375	}
1376
 
 
 
 
 
 
1377	radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
1378	if (radeon_fb == NULL) {
1379		drm_gem_object_unreference_unlocked(obj);
1380		return ERR_PTR(-ENOMEM);
1381	}
1382
1383	ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
1384	if (ret) {
1385		kfree(radeon_fb);
1386		drm_gem_object_unreference_unlocked(obj);
1387		return ERR_PTR(ret);
1388	}
1389
1390	return &radeon_fb->base;
1391}
1392
1393static void radeon_output_poll_changed(struct drm_device *dev)
1394{
1395	struct radeon_device *rdev = dev->dev_private;
1396	radeon_fb_output_poll_changed(rdev);
1397}
1398
1399static const struct drm_mode_config_funcs radeon_mode_funcs = {
1400	.fb_create = radeon_user_framebuffer_create,
1401	.output_poll_changed = radeon_output_poll_changed
1402};
1403
1404static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
1405{	{ 0, "driver" },
1406	{ 1, "bios" },
1407};
1408
1409static struct drm_prop_enum_list radeon_tv_std_enum_list[] =
1410{	{ TV_STD_NTSC, "ntsc" },
1411	{ TV_STD_PAL, "pal" },
1412	{ TV_STD_PAL_M, "pal-m" },
1413	{ TV_STD_PAL_60, "pal-60" },
1414	{ TV_STD_NTSC_J, "ntsc-j" },
1415	{ TV_STD_SCART_PAL, "scart-pal" },
1416	{ TV_STD_PAL_CN, "pal-cn" },
1417	{ TV_STD_SECAM, "secam" },
1418};
1419
1420static struct drm_prop_enum_list radeon_underscan_enum_list[] =
1421{	{ UNDERSCAN_OFF, "off" },
1422	{ UNDERSCAN_ON, "on" },
1423	{ UNDERSCAN_AUTO, "auto" },
1424};
1425
1426static struct drm_prop_enum_list radeon_audio_enum_list[] =
1427{	{ RADEON_AUDIO_DISABLE, "off" },
1428	{ RADEON_AUDIO_ENABLE, "on" },
1429	{ RADEON_AUDIO_AUTO, "auto" },
1430};
1431
1432/* XXX support different dither options? spatial, temporal, both, etc. */
1433static struct drm_prop_enum_list radeon_dither_enum_list[] =
1434{	{ RADEON_FMT_DITHER_DISABLE, "off" },
1435	{ RADEON_FMT_DITHER_ENABLE, "on" },
1436};
1437
1438static struct drm_prop_enum_list radeon_output_csc_enum_list[] =
1439{	{ RADEON_OUTPUT_CSC_BYPASS, "bypass" },
1440	{ RADEON_OUTPUT_CSC_TVRGB, "tvrgb" },
1441	{ RADEON_OUTPUT_CSC_YCBCR601, "ycbcr601" },
1442	{ RADEON_OUTPUT_CSC_YCBCR709, "ycbcr709" },
1443};
1444
1445static int radeon_modeset_create_props(struct radeon_device *rdev)
1446{
1447	int sz;
1448
1449	if (rdev->is_atom_bios) {
1450		rdev->mode_info.coherent_mode_property =
1451			drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1);
1452		if (!rdev->mode_info.coherent_mode_property)
1453			return -ENOMEM;
1454	}
1455
1456	if (!ASIC_IS_AVIVO(rdev)) {
1457		sz = ARRAY_SIZE(radeon_tmds_pll_enum_list);
1458		rdev->mode_info.tmds_pll_property =
1459			drm_property_create_enum(rdev->ddev, 0,
1460					    "tmds_pll",
1461					    radeon_tmds_pll_enum_list, sz);
1462	}
1463
1464	rdev->mode_info.load_detect_property =
1465		drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1);
1466	if (!rdev->mode_info.load_detect_property)
1467		return -ENOMEM;
1468
1469	drm_mode_create_scaling_mode_property(rdev->ddev);
1470
1471	sz = ARRAY_SIZE(radeon_tv_std_enum_list);
1472	rdev->mode_info.tv_std_property =
1473		drm_property_create_enum(rdev->ddev, 0,
1474				    "tv standard",
1475				    radeon_tv_std_enum_list, sz);
1476
1477	sz = ARRAY_SIZE(radeon_underscan_enum_list);
1478	rdev->mode_info.underscan_property =
1479		drm_property_create_enum(rdev->ddev, 0,
1480				    "underscan",
1481				    radeon_underscan_enum_list, sz);
1482
1483	rdev->mode_info.underscan_hborder_property =
1484		drm_property_create_range(rdev->ddev, 0,
1485					"underscan hborder", 0, 128);
1486	if (!rdev->mode_info.underscan_hborder_property)
1487		return -ENOMEM;
1488
1489	rdev->mode_info.underscan_vborder_property =
1490		drm_property_create_range(rdev->ddev, 0,
1491					"underscan vborder", 0, 128);
1492	if (!rdev->mode_info.underscan_vborder_property)
1493		return -ENOMEM;
1494
1495	sz = ARRAY_SIZE(radeon_audio_enum_list);
1496	rdev->mode_info.audio_property =
1497		drm_property_create_enum(rdev->ddev, 0,
1498					 "audio",
1499					 radeon_audio_enum_list, sz);
1500
1501	sz = ARRAY_SIZE(radeon_dither_enum_list);
1502	rdev->mode_info.dither_property =
1503		drm_property_create_enum(rdev->ddev, 0,
1504					 "dither",
1505					 radeon_dither_enum_list, sz);
1506
1507	sz = ARRAY_SIZE(radeon_output_csc_enum_list);
1508	rdev->mode_info.output_csc_property =
1509		drm_property_create_enum(rdev->ddev, 0,
1510					 "output_csc",
1511					 radeon_output_csc_enum_list, sz);
1512
1513	return 0;
1514}
1515
1516void radeon_update_display_priority(struct radeon_device *rdev)
1517{
1518	/* adjustment options for the display watermarks */
1519	if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
1520		/* set display priority to high for r3xx, rv515 chips
1521		 * this avoids flickering due to underflow to the
1522		 * display controllers during heavy acceleration.
1523		 * Don't force high on rs4xx igp chips as it seems to
1524		 * affect the sound card.  See kernel bug 15982.
1525		 */
1526		if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
1527		    !(rdev->flags & RADEON_IS_IGP))
1528			rdev->disp_priority = 2;
1529		else
1530			rdev->disp_priority = 0;
1531	} else
1532		rdev->disp_priority = radeon_disp_priority;
1533
1534}
1535
1536/*
1537 * Allocate hdmi structs and determine register offsets
1538 */
1539static void radeon_afmt_init(struct radeon_device *rdev)
1540{
1541	int i;
1542
1543	for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++)
1544		rdev->mode_info.afmt[i] = NULL;
1545
1546	if (ASIC_IS_NODCE(rdev)) {
1547		/* nothing to do */
1548	} else if (ASIC_IS_DCE4(rdev)) {
1549		static uint32_t eg_offsets[] = {
1550			EVERGREEN_CRTC0_REGISTER_OFFSET,
1551			EVERGREEN_CRTC1_REGISTER_OFFSET,
1552			EVERGREEN_CRTC2_REGISTER_OFFSET,
1553			EVERGREEN_CRTC3_REGISTER_OFFSET,
1554			EVERGREEN_CRTC4_REGISTER_OFFSET,
1555			EVERGREEN_CRTC5_REGISTER_OFFSET,
1556			0x13830 - 0x7030,
1557		};
1558		int num_afmt;
1559
1560		/* DCE8 has 7 audio blocks tied to DIG encoders */
1561		/* DCE6 has 6 audio blocks tied to DIG encoders */
1562		/* DCE4/5 has 6 audio blocks tied to DIG encoders */
1563		/* DCE4.1 has 2 audio blocks tied to DIG encoders */
1564		if (ASIC_IS_DCE8(rdev))
1565			num_afmt = 7;
1566		else if (ASIC_IS_DCE6(rdev))
1567			num_afmt = 6;
1568		else if (ASIC_IS_DCE5(rdev))
1569			num_afmt = 6;
1570		else if (ASIC_IS_DCE41(rdev))
1571			num_afmt = 2;
1572		else /* DCE4 */
1573			num_afmt = 6;
1574
1575		BUG_ON(num_afmt > ARRAY_SIZE(eg_offsets));
1576		for (i = 0; i < num_afmt; i++) {
1577			rdev->mode_info.afmt[i] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1578			if (rdev->mode_info.afmt[i]) {
1579				rdev->mode_info.afmt[i]->offset = eg_offsets[i];
1580				rdev->mode_info.afmt[i]->id = i;
1581			}
1582		}
1583	} else if (ASIC_IS_DCE3(rdev)) {
1584		/* DCE3.x has 2 audio blocks tied to DIG encoders */
1585		rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1586		if (rdev->mode_info.afmt[0]) {
1587			rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0;
1588			rdev->mode_info.afmt[0]->id = 0;
1589		}
1590		rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1591		if (rdev->mode_info.afmt[1]) {
1592			rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1;
1593			rdev->mode_info.afmt[1]->id = 1;
1594		}
1595	} else if (ASIC_IS_DCE2(rdev)) {
1596		/* DCE2 has at least 1 routable audio block */
1597		rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1598		if (rdev->mode_info.afmt[0]) {
1599			rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0;
1600			rdev->mode_info.afmt[0]->id = 0;
1601		}
1602		/* r6xx has 2 routable audio blocks */
1603		if (rdev->family >= CHIP_R600) {
1604			rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
1605			if (rdev->mode_info.afmt[1]) {
1606				rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1;
1607				rdev->mode_info.afmt[1]->id = 1;
1608			}
1609		}
1610	}
1611}
1612
1613static void radeon_afmt_fini(struct radeon_device *rdev)
1614{
1615	int i;
1616
1617	for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) {
1618		kfree(rdev->mode_info.afmt[i]);
1619		rdev->mode_info.afmt[i] = NULL;
1620	}
1621}
1622
1623int radeon_modeset_init(struct radeon_device *rdev)
1624{
1625	int i;
1626	int ret;
1627
1628	drm_mode_config_init(rdev->ddev);
1629	rdev->mode_info.mode_config_initialized = true;
1630
1631	rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
1632
 
 
 
1633	if (ASIC_IS_DCE5(rdev)) {
1634		rdev->ddev->mode_config.max_width = 16384;
1635		rdev->ddev->mode_config.max_height = 16384;
1636	} else if (ASIC_IS_AVIVO(rdev)) {
1637		rdev->ddev->mode_config.max_width = 8192;
1638		rdev->ddev->mode_config.max_height = 8192;
1639	} else {
1640		rdev->ddev->mode_config.max_width = 4096;
1641		rdev->ddev->mode_config.max_height = 4096;
1642	}
1643
1644	rdev->ddev->mode_config.preferred_depth = 24;
1645	rdev->ddev->mode_config.prefer_shadow = 1;
1646
1647	rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
1648
1649	ret = radeon_modeset_create_props(rdev);
1650	if (ret) {
1651		return ret;
1652	}
1653
1654	/* init i2c buses */
1655	radeon_i2c_init(rdev);
1656
1657	/* check combios for a valid hardcoded EDID - Sun servers */
1658	if (!rdev->is_atom_bios) {
1659		/* check for hardcoded EDID in BIOS */
1660		radeon_combios_check_hardcoded_edid(rdev);
1661	}
1662
1663	/* allocate crtcs */
1664	for (i = 0; i < rdev->num_crtc; i++) {
1665		radeon_crtc_init(rdev->ddev, i);
1666	}
1667
1668	/* okay we should have all the bios connectors */
1669	ret = radeon_setup_enc_conn(rdev->ddev);
1670	if (!ret) {
1671		return ret;
1672	}
1673
1674	/* init dig PHYs, disp eng pll */
1675	if (rdev->is_atom_bios) {
1676		radeon_atom_encoder_init(rdev);
1677		radeon_atom_disp_eng_pll_init(rdev);
1678	}
1679
1680	/* initialize hpd */
1681	radeon_hpd_init(rdev);
1682
1683	/* setup afmt */
1684	radeon_afmt_init(rdev);
1685
1686	radeon_fbdev_init(rdev);
1687	drm_kms_helper_poll_init(rdev->ddev);
1688
1689	/* do pm late init */
1690	ret = radeon_pm_late_init(rdev);
1691
1692	return 0;
1693}
1694
1695void radeon_modeset_fini(struct radeon_device *rdev)
1696{
1697	radeon_fbdev_fini(rdev);
1698	kfree(rdev->mode_info.bios_hardcoded_edid);
1699
1700	/* free i2c buses */
1701	radeon_i2c_fini(rdev);
1702
1703	if (rdev->mode_info.mode_config_initialized) {
1704		radeon_afmt_fini(rdev);
1705		drm_kms_helper_poll_fini(rdev->ddev);
1706		radeon_hpd_fini(rdev);
 
 
 
1707		drm_mode_config_cleanup(rdev->ddev);
1708		rdev->mode_info.mode_config_initialized = false;
1709	}
 
 
 
 
 
1710}
1711
1712static bool is_hdtv_mode(const struct drm_display_mode *mode)
1713{
1714	/* try and guess if this is a tv or a monitor */
1715	if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
1716	    (mode->vdisplay == 576) || /* 576p */
1717	    (mode->vdisplay == 720) || /* 720p */
1718	    (mode->vdisplay == 1080)) /* 1080p */
1719		return true;
1720	else
1721		return false;
1722}
1723
1724bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
1725				const struct drm_display_mode *mode,
1726				struct drm_display_mode *adjusted_mode)
1727{
1728	struct drm_device *dev = crtc->dev;
1729	struct radeon_device *rdev = dev->dev_private;
1730	struct drm_encoder *encoder;
1731	struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1732	struct radeon_encoder *radeon_encoder;
1733	struct drm_connector *connector;
1734	struct radeon_connector *radeon_connector;
1735	bool first = true;
1736	u32 src_v = 1, dst_v = 1;
1737	u32 src_h = 1, dst_h = 1;
1738
1739	radeon_crtc->h_border = 0;
1740	radeon_crtc->v_border = 0;
1741
1742	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
1743		if (encoder->crtc != crtc)
1744			continue;
1745		radeon_encoder = to_radeon_encoder(encoder);
1746		connector = radeon_get_connector_for_encoder(encoder);
1747		radeon_connector = to_radeon_connector(connector);
1748
1749		if (first) {
1750			/* set scaling */
1751			if (radeon_encoder->rmx_type == RMX_OFF)
1752				radeon_crtc->rmx_type = RMX_OFF;
1753			else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
1754				 mode->vdisplay < radeon_encoder->native_mode.vdisplay)
1755				radeon_crtc->rmx_type = radeon_encoder->rmx_type;
1756			else
1757				radeon_crtc->rmx_type = RMX_OFF;
1758			/* copy native mode */
1759			memcpy(&radeon_crtc->native_mode,
1760			       &radeon_encoder->native_mode,
1761				sizeof(struct drm_display_mode));
1762			src_v = crtc->mode.vdisplay;
1763			dst_v = radeon_crtc->native_mode.vdisplay;
1764			src_h = crtc->mode.hdisplay;
1765			dst_h = radeon_crtc->native_mode.hdisplay;
1766
1767			/* fix up for overscan on hdmi */
1768			if (ASIC_IS_AVIVO(rdev) &&
1769			    (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
1770			    ((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
1771			     ((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
1772			      drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
1773			      is_hdtv_mode(mode)))) {
1774				if (radeon_encoder->underscan_hborder != 0)
1775					radeon_crtc->h_border = radeon_encoder->underscan_hborder;
1776				else
1777					radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
1778				if (radeon_encoder->underscan_vborder != 0)
1779					radeon_crtc->v_border = radeon_encoder->underscan_vborder;
1780				else
1781					radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
1782				radeon_crtc->rmx_type = RMX_FULL;
1783				src_v = crtc->mode.vdisplay;
1784				dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
1785				src_h = crtc->mode.hdisplay;
1786				dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
1787			}
1788			first = false;
1789		} else {
1790			if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
1791				/* WARNING: Right now this can't happen but
1792				 * in the future we need to check that scaling
1793				 * are consistent across different encoder
1794				 * (ie all encoder can work with the same
1795				 *  scaling).
1796				 */
1797				DRM_ERROR("Scaling not consistent across encoder.\n");
1798				return false;
1799			}
1800		}
1801	}
1802	if (radeon_crtc->rmx_type != RMX_OFF) {
1803		fixed20_12 a, b;
1804		a.full = dfixed_const(src_v);
1805		b.full = dfixed_const(dst_v);
1806		radeon_crtc->vsc.full = dfixed_div(a, b);
1807		a.full = dfixed_const(src_h);
1808		b.full = dfixed_const(dst_h);
1809		radeon_crtc->hsc.full = dfixed_div(a, b);
1810	} else {
1811		radeon_crtc->vsc.full = dfixed_const(1);
1812		radeon_crtc->hsc.full = dfixed_const(1);
1813	}
1814	return true;
1815}
1816
1817/*
1818 * Retrieve current video scanout position of crtc on a given gpu, and
1819 * an optional accurate timestamp of when query happened.
1820 *
1821 * \param dev Device to query.
1822 * \param crtc Crtc to query.
1823 * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
1824 *              For driver internal use only also supports these flags:
1825 *
1826 *              USE_REAL_VBLANKSTART to use the real start of vblank instead
1827 *              of a fudged earlier start of vblank.
1828 *
1829 *              GET_DISTANCE_TO_VBLANKSTART to return distance to the
1830 *              fudged earlier start of vblank in *vpos and the distance
1831 *              to true start of vblank in *hpos.
1832 *
1833 * \param *vpos Location where vertical scanout position should be stored.
1834 * \param *hpos Location where horizontal scanout position should go.
1835 * \param *stime Target location for timestamp taken immediately before
1836 *               scanout position query. Can be NULL to skip timestamp.
1837 * \param *etime Target location for timestamp taken immediately after
1838 *               scanout position query. Can be NULL to skip timestamp.
1839 *
1840 * Returns vpos as a positive number while in active scanout area.
1841 * Returns vpos as a negative number inside vblank, counting the number
1842 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
1843 * until start of active scanout / end of vblank."
1844 *
1845 * \return Flags, or'ed together as follows:
1846 *
1847 * DRM_SCANOUTPOS_VALID = Query successful.
1848 * DRM_SCANOUTPOS_INVBL = Inside vblank.
1849 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
1850 * this flag means that returned position may be offset by a constant but
1851 * unknown small number of scanlines wrt. real scanout position.
1852 *
1853 */
1854int radeon_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
1855			       unsigned int flags, int *vpos, int *hpos,
1856			       ktime_t *stime, ktime_t *etime,
1857			       const struct drm_display_mode *mode)
1858{
1859	u32 stat_crtc = 0, vbl = 0, position = 0;
1860	int vbl_start, vbl_end, vtotal, ret = 0;
1861	bool in_vbl = true;
1862
1863	struct radeon_device *rdev = dev->dev_private;
1864
1865	/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
1866
1867	/* Get optional system timestamp before query. */
1868	if (stime)
1869		*stime = ktime_get();
1870
1871	if (ASIC_IS_DCE4(rdev)) {
1872		if (pipe == 0) {
1873			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1874				     EVERGREEN_CRTC0_REGISTER_OFFSET);
1875			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1876					  EVERGREEN_CRTC0_REGISTER_OFFSET);
1877			ret |= DRM_SCANOUTPOS_VALID;
1878		}
1879		if (pipe == 1) {
1880			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1881				     EVERGREEN_CRTC1_REGISTER_OFFSET);
1882			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1883					  EVERGREEN_CRTC1_REGISTER_OFFSET);
1884			ret |= DRM_SCANOUTPOS_VALID;
1885		}
1886		if (pipe == 2) {
1887			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1888				     EVERGREEN_CRTC2_REGISTER_OFFSET);
1889			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1890					  EVERGREEN_CRTC2_REGISTER_OFFSET);
1891			ret |= DRM_SCANOUTPOS_VALID;
1892		}
1893		if (pipe == 3) {
1894			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1895				     EVERGREEN_CRTC3_REGISTER_OFFSET);
1896			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1897					  EVERGREEN_CRTC3_REGISTER_OFFSET);
1898			ret |= DRM_SCANOUTPOS_VALID;
1899		}
1900		if (pipe == 4) {
1901			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1902				     EVERGREEN_CRTC4_REGISTER_OFFSET);
1903			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1904					  EVERGREEN_CRTC4_REGISTER_OFFSET);
1905			ret |= DRM_SCANOUTPOS_VALID;
1906		}
1907		if (pipe == 5) {
1908			vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
1909				     EVERGREEN_CRTC5_REGISTER_OFFSET);
1910			position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
1911					  EVERGREEN_CRTC5_REGISTER_OFFSET);
1912			ret |= DRM_SCANOUTPOS_VALID;
1913		}
1914	} else if (ASIC_IS_AVIVO(rdev)) {
1915		if (pipe == 0) {
1916			vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
1917			position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
1918			ret |= DRM_SCANOUTPOS_VALID;
1919		}
1920		if (pipe == 1) {
1921			vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
1922			position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
1923			ret |= DRM_SCANOUTPOS_VALID;
1924		}
1925	} else {
1926		/* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
1927		if (pipe == 0) {
1928			/* Assume vbl_end == 0, get vbl_start from
1929			 * upper 16 bits.
1930			 */
1931			vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) &
1932				RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1933			/* Only retrieve vpos from upper 16 bits, set hpos == 0. */
1934			position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1935			stat_crtc = RREG32(RADEON_CRTC_STATUS);
1936			if (!(stat_crtc & 1))
1937				in_vbl = false;
1938
1939			ret |= DRM_SCANOUTPOS_VALID;
1940		}
1941		if (pipe == 1) {
1942			vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
1943				RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
1944			position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
1945			stat_crtc = RREG32(RADEON_CRTC2_STATUS);
1946			if (!(stat_crtc & 1))
1947				in_vbl = false;
1948
1949			ret |= DRM_SCANOUTPOS_VALID;
1950		}
1951	}
1952
1953	/* Get optional system timestamp after query. */
1954	if (etime)
1955		*etime = ktime_get();
1956
1957	/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
1958
1959	/* Decode into vertical and horizontal scanout position. */
1960	*vpos = position & 0x1fff;
1961	*hpos = (position >> 16) & 0x1fff;
1962
1963	/* Valid vblank area boundaries from gpu retrieved? */
1964	if (vbl > 0) {
1965		/* Yes: Decode. */
1966		ret |= DRM_SCANOUTPOS_ACCURATE;
1967		vbl_start = vbl & 0x1fff;
1968		vbl_end = (vbl >> 16) & 0x1fff;
1969	}
1970	else {
1971		/* No: Fake something reasonable which gives at least ok results. */
1972		vbl_start = mode->crtc_vdisplay;
1973		vbl_end = 0;
1974	}
1975
1976	/* Called from driver internal vblank counter query code? */
1977	if (flags & GET_DISTANCE_TO_VBLANKSTART) {
1978	    /* Caller wants distance from real vbl_start in *hpos */
1979	    *hpos = *vpos - vbl_start;
1980	}
1981
1982	/* Fudge vblank to start a few scanlines earlier to handle the
1983	 * problem that vblank irqs fire a few scanlines before start
1984	 * of vblank. Some driver internal callers need the true vblank
1985	 * start to be used and signal this via the USE_REAL_VBLANKSTART flag.
1986	 *
1987	 * The cause of the "early" vblank irq is that the irq is triggered
1988	 * by the line buffer logic when the line buffer read position enters
1989	 * the vblank, whereas our crtc scanout position naturally lags the
1990	 * line buffer read position.
1991	 */
1992	if (!(flags & USE_REAL_VBLANKSTART))
1993		vbl_start -= rdev->mode_info.crtcs[pipe]->lb_vblank_lead_lines;
1994
1995	/* Test scanout position against vblank region. */
1996	if ((*vpos < vbl_start) && (*vpos >= vbl_end))
1997		in_vbl = false;
1998
1999	/* In vblank? */
2000	if (in_vbl)
2001	    ret |= DRM_SCANOUTPOS_IN_VBLANK;
2002
2003	/* Called from driver internal vblank counter query code? */
2004	if (flags & GET_DISTANCE_TO_VBLANKSTART) {
2005		/* Caller wants distance from fudged earlier vbl_start */
2006		*vpos -= vbl_start;
2007		return ret;
2008	}
2009
2010	/* Check if inside vblank area and apply corrective offsets:
2011	 * vpos will then be >=0 in video scanout area, but negative
2012	 * within vblank area, counting down the number of lines until
2013	 * start of scanout.
2014	 */
2015
2016	/* Inside "upper part" of vblank area? Apply corrective offset if so: */
2017	if (in_vbl && (*vpos >= vbl_start)) {
2018		vtotal = mode->crtc_vtotal;
2019		*vpos = *vpos - vtotal;
2020	}
2021
2022	/* Correct for shifted end of vbl at vbl_end. */
2023	*vpos = *vpos - vbl_end;
2024
2025	return ret;
2026}