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android_kernel_samsung_hero.../drivers/gpu/drm/radeon/radeon_display.c

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init: OSRC G9300ZCU2APF7
2016-08-17 10:41:52 +02:00
/*
* Copyright 2007-8 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alex Deucher
*/
#include <drm/drmP.h>
#include <drm/radeon_drm.h>
#include "radeon.h"
#include "atom.h"
#include <asm/div64.h>
#include <linux/pm_runtime.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include <linux/gcd.h>
static void avivo_crtc_load_lut(struct drm_crtc *crtc)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct radeon_device *rdev = dev->dev_private;
int i;
DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
WREG32(AVIVO_DC_LUTA_CONTROL + radeon_crtc->crtc_offset, 0);
WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
WREG32(AVIVO_DC_LUTA_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
WREG32(AVIVO_DC_LUTA_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
WREG32(AVIVO_DC_LUT_RW_SELECT, radeon_crtc->crtc_id);
WREG32(AVIVO_DC_LUT_RW_MODE, 0);
WREG32(AVIVO_DC_LUT_WRITE_EN_MASK, 0x0000003f);
WREG8(AVIVO_DC_LUT_RW_INDEX, 0);
for (i = 0; i < 256; i++) {
WREG32(AVIVO_DC_LUT_30_COLOR,
(radeon_crtc->lut_r[i] << 20) |
(radeon_crtc->lut_g[i] << 10) |
(radeon_crtc->lut_b[i] << 0));
}
/* Only change bit 0 of LUT_SEL, other bits are set elsewhere */
WREG32_P(AVIVO_D1GRPH_LUT_SEL + radeon_crtc->crtc_offset, radeon_crtc->crtc_id, ~1);
}
static void dce4_crtc_load_lut(struct drm_crtc *crtc)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct radeon_device *rdev = dev->dev_private;
int i;
DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
for (i = 0; i < 256; i++) {
WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
(radeon_crtc->lut_r[i] << 20) |
(radeon_crtc->lut_g[i] << 10) |
(radeon_crtc->lut_b[i] << 0));
}
}
static void dce5_crtc_load_lut(struct drm_crtc *crtc)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct radeon_device *rdev = dev->dev_private;
int i;
DRM_DEBUG_KMS("%d\n", radeon_crtc->crtc_id);
WREG32(NI_INPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
(NI_INPUT_CSC_GRPH_MODE(NI_INPUT_CSC_BYPASS) |
NI_INPUT_CSC_OVL_MODE(NI_INPUT_CSC_BYPASS)));
WREG32(NI_PRESCALE_GRPH_CONTROL + radeon_crtc->crtc_offset,
NI_GRPH_PRESCALE_BYPASS);
WREG32(NI_PRESCALE_OVL_CONTROL + radeon_crtc->crtc_offset,
NI_OVL_PRESCALE_BYPASS);
WREG32(NI_INPUT_GAMMA_CONTROL + radeon_crtc->crtc_offset,
(NI_GRPH_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT) |
NI_OVL_INPUT_GAMMA_MODE(NI_INPUT_GAMMA_USE_LUT)));
WREG32(EVERGREEN_DC_LUT_CONTROL + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_BLUE + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_GREEN + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_BLACK_OFFSET_RED + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_BLUE + radeon_crtc->crtc_offset, 0xffff);
WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_GREEN + radeon_crtc->crtc_offset, 0xffff);
WREG32(EVERGREEN_DC_LUT_WHITE_OFFSET_RED + radeon_crtc->crtc_offset, 0xffff);
WREG32(EVERGREEN_DC_LUT_RW_MODE + radeon_crtc->crtc_offset, 0);
WREG32(EVERGREEN_DC_LUT_WRITE_EN_MASK + radeon_crtc->crtc_offset, 0x00000007);
WREG32(EVERGREEN_DC_LUT_RW_INDEX + radeon_crtc->crtc_offset, 0);
for (i = 0; i < 256; i++) {
WREG32(EVERGREEN_DC_LUT_30_COLOR + radeon_crtc->crtc_offset,
(radeon_crtc->lut_r[i] << 20) |
(radeon_crtc->lut_g[i] << 10) |
(radeon_crtc->lut_b[i] << 0));
}
WREG32(NI_DEGAMMA_CONTROL + radeon_crtc->crtc_offset,
(NI_GRPH_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
NI_OVL_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
NI_ICON_DEGAMMA_MODE(NI_DEGAMMA_BYPASS) |
NI_CURSOR_DEGAMMA_MODE(NI_DEGAMMA_BYPASS)));
WREG32(NI_GAMUT_REMAP_CONTROL + radeon_crtc->crtc_offset,
(NI_GRPH_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS) |
NI_OVL_GAMUT_REMAP_MODE(NI_GAMUT_REMAP_BYPASS)));
WREG32(NI_REGAMMA_CONTROL + radeon_crtc->crtc_offset,
(NI_GRPH_REGAMMA_MODE(NI_REGAMMA_BYPASS) |
NI_OVL_REGAMMA_MODE(NI_REGAMMA_BYPASS)));
WREG32(NI_OUTPUT_CSC_CONTROL + radeon_crtc->crtc_offset,
(NI_OUTPUT_CSC_GRPH_MODE(NI_OUTPUT_CSC_BYPASS) |
NI_OUTPUT_CSC_OVL_MODE(NI_OUTPUT_CSC_BYPASS)));
/* XXX match this to the depth of the crtc fmt block, move to modeset? */
WREG32(0x6940 + radeon_crtc->crtc_offset, 0);
if (ASIC_IS_DCE8(rdev)) {
/* XXX this only needs to be programmed once per crtc at startup,
* not sure where the best place for it is
*/
WREG32(CIK_ALPHA_CONTROL + radeon_crtc->crtc_offset,
CIK_CURSOR_ALPHA_BLND_ENA);
}
}
static void legacy_crtc_load_lut(struct drm_crtc *crtc)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct radeon_device *rdev = dev->dev_private;
int i;
uint32_t dac2_cntl;
dac2_cntl = RREG32(RADEON_DAC_CNTL2);
if (radeon_crtc->crtc_id == 0)
dac2_cntl &= (uint32_t)~RADEON_DAC2_PALETTE_ACC_CTL;
else
dac2_cntl |= RADEON_DAC2_PALETTE_ACC_CTL;
WREG32(RADEON_DAC_CNTL2, dac2_cntl);
WREG8(RADEON_PALETTE_INDEX, 0);
for (i = 0; i < 256; i++) {
WREG32(RADEON_PALETTE_30_DATA,
(radeon_crtc->lut_r[i] << 20) |
(radeon_crtc->lut_g[i] << 10) |
(radeon_crtc->lut_b[i] << 0));
}
}
void radeon_crtc_load_lut(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct radeon_device *rdev = dev->dev_private;
if (!crtc->enabled)
return;
if (ASIC_IS_DCE5(rdev))
dce5_crtc_load_lut(crtc);
else if (ASIC_IS_DCE4(rdev))
dce4_crtc_load_lut(crtc);
else if (ASIC_IS_AVIVO(rdev))
avivo_crtc_load_lut(crtc);
else
legacy_crtc_load_lut(crtc);
}
/** Sets the color ramps on behalf of fbcon */
void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
radeon_crtc->lut_r[regno] = red >> 6;
radeon_crtc->lut_g[regno] = green >> 6;
radeon_crtc->lut_b[regno] = blue >> 6;
}
/** Gets the color ramps on behalf of fbcon */
void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, int regno)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
*red = radeon_crtc->lut_r[regno] << 6;
*green = radeon_crtc->lut_g[regno] << 6;
*blue = radeon_crtc->lut_b[regno] << 6;
}
static void radeon_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t start, uint32_t size)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
int end = (start + size > 256) ? 256 : start + size, i;
/* userspace palettes are always correct as is */
for (i = start; i < end; i++) {
radeon_crtc->lut_r[i] = red[i] >> 6;
radeon_crtc->lut_g[i] = green[i] >> 6;
radeon_crtc->lut_b[i] = blue[i] >> 6;
}
radeon_crtc_load_lut(crtc);
}
static void radeon_crtc_destroy(struct drm_crtc *crtc)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
drm_crtc_cleanup(crtc);
destroy_workqueue(radeon_crtc->flip_queue);
kfree(radeon_crtc);
}
/**
* radeon_unpin_work_func - unpin old buffer object
*
* @__work - kernel work item
*
* Unpin the old frame buffer object outside of the interrupt handler
*/
static void radeon_unpin_work_func(struct work_struct *__work)
{
struct radeon_flip_work *work =
container_of(__work, struct radeon_flip_work, unpin_work);
int r;
/* unpin of the old buffer */
r = radeon_bo_reserve(work->old_rbo, false);
if (likely(r == 0)) {
r = radeon_bo_unpin(work->old_rbo);
if (unlikely(r != 0)) {
DRM_ERROR("failed to unpin buffer after flip\n");
}
radeon_bo_unreserve(work->old_rbo);
} else
DRM_ERROR("failed to reserve buffer after flip\n");
drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
kfree(work);
}
void radeon_crtc_handle_vblank(struct radeon_device *rdev, int crtc_id)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
unsigned long flags;
u32 update_pending;
int vpos, hpos;
/* can happen during initialization */
if (radeon_crtc == NULL)
return;
/* Skip the pageflip completion check below (based on polling) on
* asics which reliably support hw pageflip completion irqs. pflip
* irqs are a reliable and race-free method of handling pageflip
* completion detection. A use_pflipirq module parameter < 2 allows
* to override this in case of asics with faulty pflip irqs.
* A module parameter of 0 would only use this polling based path,
* a parameter of 1 would use pflip irq only as a backup to this
* path, as in Linux 3.16.
*/
if ((radeon_use_pflipirq == 2) && ASIC_IS_DCE4(rdev))
return;
spin_lock_irqsave(&rdev->ddev->event_lock, flags);
if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
"RADEON_FLIP_SUBMITTED(%d)\n",
radeon_crtc->flip_status,
RADEON_FLIP_SUBMITTED);
spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
return;
}
update_pending = radeon_page_flip_pending(rdev, crtc_id);
/* Has the pageflip already completed in crtc, or is it certain
* to complete in this vblank?
*/
if (update_pending &&
(DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id, 0,
&vpos, &hpos, NULL, NULL)) &&
((vpos >= (99 * rdev->mode_info.crtcs[crtc_id]->base.hwmode.crtc_vdisplay)/100) ||
(vpos < 0 && !ASIC_IS_AVIVO(rdev)))) {
/* crtc didn't flip in this target vblank interval,
* but flip is pending in crtc. Based on the current
* scanout position we know that the current frame is
* (nearly) complete and the flip will (likely)
* complete before the start of the next frame.
*/
update_pending = 0;
}
spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
if (!update_pending)
radeon_crtc_handle_flip(rdev, crtc_id);
}
/**
* radeon_crtc_handle_flip - page flip completed
*
* @rdev: radeon device pointer
* @crtc_id: crtc number this event is for
*
* Called when we are sure that a page flip for this crtc is completed.
*/
void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
{
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[crtc_id];
struct radeon_flip_work *work;
unsigned long flags;
/* this can happen at init */
if (radeon_crtc == NULL)
return;
spin_lock_irqsave(&rdev->ddev->event_lock, flags);
work = radeon_crtc->flip_work;
if (radeon_crtc->flip_status != RADEON_FLIP_SUBMITTED) {
DRM_DEBUG_DRIVER("radeon_crtc->flip_status = %d != "
"RADEON_FLIP_SUBMITTED(%d)\n",
radeon_crtc->flip_status,
RADEON_FLIP_SUBMITTED);
spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
return;
}
/* Pageflip completed. Clean up. */
radeon_crtc->flip_status = RADEON_FLIP_NONE;
radeon_crtc->flip_work = NULL;
/* wakeup userspace */
if (work->event)
drm_send_vblank_event(rdev->ddev, crtc_id, work->event);
spin_unlock_irqrestore(&rdev->ddev->event_lock, flags);
drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id);
radeon_irq_kms_pflip_irq_put(rdev, work->crtc_id);
queue_work(radeon_crtc->flip_queue, &work->unpin_work);
}
/**
* radeon_flip_work_func - page flip framebuffer
*
* @work - kernel work item
*
* Wait for the buffer object to become idle and do the actual page flip
*/
static void radeon_flip_work_func(struct work_struct *__work)
{
struct radeon_flip_work *work =
container_of(__work, struct radeon_flip_work, flip_work);
struct radeon_device *rdev = work->rdev;
struct radeon_crtc *radeon_crtc = rdev->mode_info.crtcs[work->crtc_id];
struct drm_crtc *crtc = &radeon_crtc->base;
unsigned long flags;
int r;
down_read(&rdev->exclusive_lock);
if (work->fence) {
struct radeon_fence *fence;
fence = to_radeon_fence(work->fence);
if (fence && fence->rdev == rdev) {
r = radeon_fence_wait(fence, false);
if (r == -EDEADLK) {
up_read(&rdev->exclusive_lock);
do {
r = radeon_gpu_reset(rdev);
} while (r == -EAGAIN);
down_read(&rdev->exclusive_lock);
}
} else
r = fence_wait(work->fence, false);
if (r)
DRM_ERROR("failed to wait on page flip fence (%d)!\n", r);
/* We continue with the page flip even if we failed to wait on
* the fence, otherwise the DRM core and userspace will be
* confused about which BO the CRTC is scanning out
*/
fence_put(work->fence);
work->fence = NULL;
}
/* We borrow the event spin lock for protecting flip_status */
spin_lock_irqsave(&crtc->dev->event_lock, flags);
/* set the proper interrupt */
radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
/* do the flip (mmio) */
radeon_page_flip(rdev, radeon_crtc->crtc_id, work->base);
radeon_crtc->flip_status = RADEON_FLIP_SUBMITTED;
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
up_read(&rdev->exclusive_lock);
}
static int radeon_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t page_flip_flags)
{
struct drm_device *dev = crtc->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
struct radeon_framebuffer *old_radeon_fb;
struct radeon_framebuffer *new_radeon_fb;
struct drm_gem_object *obj;
struct radeon_flip_work *work;
struct radeon_bo *new_rbo;
uint32_t tiling_flags, pitch_pixels;
uint64_t base;
unsigned long flags;
int r;
work = kzalloc(sizeof *work, GFP_KERNEL);
if (work == NULL)
return -ENOMEM;
INIT_WORK(&work->flip_work, radeon_flip_work_func);
INIT_WORK(&work->unpin_work, radeon_unpin_work_func);
work->rdev = rdev;
work->crtc_id = radeon_crtc->crtc_id;
work->event = event;
/* schedule unpin of the old buffer */
old_radeon_fb = to_radeon_framebuffer(crtc->primary->fb);
obj = old_radeon_fb->obj;
/* take a reference to the old object */
drm_gem_object_reference(obj);
work->old_rbo = gem_to_radeon_bo(obj);
new_radeon_fb = to_radeon_framebuffer(fb);
obj = new_radeon_fb->obj;
new_rbo = gem_to_radeon_bo(obj);
/* pin the new buffer */
DRM_DEBUG_DRIVER("flip-ioctl() cur_rbo = %p, new_rbo = %p\n",
work->old_rbo, new_rbo);
r = radeon_bo_reserve(new_rbo, false);
if (unlikely(r != 0)) {
DRM_ERROR("failed to reserve new rbo buffer before flip\n");
goto cleanup;
}
/* Only 27 bit offset for legacy CRTC */
r = radeon_bo_pin_restricted(new_rbo, RADEON_GEM_DOMAIN_VRAM,
ASIC_IS_AVIVO(rdev) ? 0 : 1 << 27, &base);
if (unlikely(r != 0)) {
radeon_bo_unreserve(new_rbo);
r = -EINVAL;
DRM_ERROR("failed to pin new rbo buffer before flip\n");
goto cleanup;
}
work->fence = fence_get(reservation_object_get_excl(new_rbo->tbo.resv));
radeon_bo_get_tiling_flags(new_rbo, &tiling_flags, NULL);
radeon_bo_unreserve(new_rbo);
if (!ASIC_IS_AVIVO(rdev)) {
/* crtc offset is from display base addr not FB location */
base -= radeon_crtc->legacy_display_base_addr;
pitch_pixels = fb->pitches[0] / (fb->bits_per_pixel / 8);
if (tiling_flags & RADEON_TILING_MACRO) {
if (ASIC_IS_R300(rdev)) {
base &= ~0x7ff;
} else {
int byteshift = fb->bits_per_pixel >> 4;
int tile_addr = (((crtc->y >> 3) * pitch_pixels + crtc->x) >> (8 - byteshift)) << 11;
base += tile_addr + ((crtc->x << byteshift) % 256) + ((crtc->y % 8) << 8);
}
} else {
int offset = crtc->y * pitch_pixels + crtc->x;
switch (fb->bits_per_pixel) {
case 8:
default:
offset *= 1;
break;
case 15:
case 16:
offset *= 2;
break;
case 24:
offset *= 3;
break;
case 32:
offset *= 4;
break;
}
base += offset;
}
base &= ~7;
}
work->base = base;
r = drm_vblank_get(crtc->dev, radeon_crtc->crtc_id);
if (r) {
DRM_ERROR("failed to get vblank before flip\n");
goto pflip_cleanup;
}
/* We borrow the event spin lock for protecting flip_work */
spin_lock_irqsave(&crtc->dev->event_lock, flags);
if (radeon_crtc->flip_status != RADEON_FLIP_NONE) {
DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
r = -EBUSY;
goto vblank_cleanup;
}
radeon_crtc->flip_status = RADEON_FLIP_PENDING;
radeon_crtc->flip_work = work;
/* update crtc fb */
crtc->primary->fb = fb;
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
queue_work(radeon_crtc->flip_queue, &work->flip_work);
return 0;
vblank_cleanup:
drm_vblank_put(crtc->dev, radeon_crtc->crtc_id);
pflip_cleanup:
if (unlikely(radeon_bo_reserve(new_rbo, false) != 0)) {
DRM_ERROR("failed to reserve new rbo in error path\n");
goto cleanup;
}
if (unlikely(radeon_bo_unpin(new_rbo) != 0)) {
DRM_ERROR("failed to unpin new rbo in error path\n");
}
radeon_bo_unreserve(new_rbo);
cleanup:
drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
fence_put(work->fence);
kfree(work);
return r;
}
static int
radeon_crtc_set_config(struct drm_mode_set *set)
{
struct drm_device *dev;
struct radeon_device *rdev;
struct drm_crtc *crtc;
bool active = false;
int ret;
if (!set || !set->crtc)
return -EINVAL;
dev = set->crtc->dev;
ret = pm_runtime_get_sync(dev->dev);
if (ret < 0)
return ret;
ret = drm_crtc_helper_set_config(set);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
if (crtc->enabled)
active = true;
pm_runtime_mark_last_busy(dev->dev);
rdev = dev->dev_private;
/* if we have active crtcs and we don't have a power ref,
take the current one */
if (active && !rdev->have_disp_power_ref) {
rdev->have_disp_power_ref = true;
return ret;
}
/* if we have no active crtcs, then drop the power ref
we got before */
if (!active && rdev->have_disp_power_ref) {
pm_runtime_put_autosuspend(dev->dev);
rdev->have_disp_power_ref = false;
}
/* drop the power reference we got coming in here */
pm_runtime_put_autosuspend(dev->dev);
return ret;
}
static const struct drm_crtc_funcs radeon_crtc_funcs = {
.cursor_set = radeon_crtc_cursor_set,
.cursor_move = radeon_crtc_cursor_move,
.gamma_set = radeon_crtc_gamma_set,
.set_config = radeon_crtc_set_config,
.destroy = radeon_crtc_destroy,
.page_flip = radeon_crtc_page_flip,
};
static void radeon_crtc_init(struct drm_device *dev, int index)
{
struct radeon_device *rdev = dev->dev_private;
struct radeon_crtc *radeon_crtc;
int i;
radeon_crtc = kzalloc(sizeof(struct radeon_crtc) + (RADEONFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
if (radeon_crtc == NULL)
return;
drm_crtc_init(dev, &radeon_crtc->base, &radeon_crtc_funcs);
drm_mode_crtc_set_gamma_size(&radeon_crtc->base, 256);
radeon_crtc->crtc_id = index;
radeon_crtc->flip_queue = create_singlethread_workqueue("radeon-crtc");
rdev->mode_info.crtcs[index] = radeon_crtc;
if (rdev->family >= CHIP_BONAIRE) {
radeon_crtc->max_cursor_width = CIK_CURSOR_WIDTH;
radeon_crtc->max_cursor_height = CIK_CURSOR_HEIGHT;
} else {
radeon_crtc->max_cursor_width = CURSOR_WIDTH;
radeon_crtc->max_cursor_height = CURSOR_HEIGHT;
}
dev->mode_config.cursor_width = radeon_crtc->max_cursor_width;
dev->mode_config.cursor_height = radeon_crtc->max_cursor_height;
#if 0
radeon_crtc->mode_set.crtc = &radeon_crtc->base;
radeon_crtc->mode_set.connectors = (struct drm_connector **)(radeon_crtc + 1);
radeon_crtc->mode_set.num_connectors = 0;
#endif
for (i = 0; i < 256; i++) {
radeon_crtc->lut_r[i] = i << 2;
radeon_crtc->lut_g[i] = i << 2;
radeon_crtc->lut_b[i] = i << 2;
}
if (rdev->is_atom_bios && (ASIC_IS_AVIVO(rdev) || radeon_r4xx_atom))
radeon_atombios_init_crtc(dev, radeon_crtc);
else
radeon_legacy_init_crtc(dev, radeon_crtc);
}
static const char *encoder_names[38] = {
"NONE",
"INTERNAL_LVDS",
"INTERNAL_TMDS1",
"INTERNAL_TMDS2",
"INTERNAL_DAC1",
"INTERNAL_DAC2",
"INTERNAL_SDVOA",
"INTERNAL_SDVOB",
"SI170B",
"CH7303",
"CH7301",
"INTERNAL_DVO1",
"EXTERNAL_SDVOA",
"EXTERNAL_SDVOB",
"TITFP513",
"INTERNAL_LVTM1",
"VT1623",
"HDMI_SI1930",
"HDMI_INTERNAL",
"INTERNAL_KLDSCP_TMDS1",
"INTERNAL_KLDSCP_DVO1",
"INTERNAL_KLDSCP_DAC1",
"INTERNAL_KLDSCP_DAC2",
"SI178",
"MVPU_FPGA",
"INTERNAL_DDI",
"VT1625",
"HDMI_SI1932",
"DP_AN9801",
"DP_DP501",
"INTERNAL_UNIPHY",
"INTERNAL_KLDSCP_LVTMA",
"INTERNAL_UNIPHY1",
"INTERNAL_UNIPHY2",
"NUTMEG",
"TRAVIS",
"INTERNAL_VCE",
"INTERNAL_UNIPHY3",
};
static const char *hpd_names[6] = {
"HPD1",
"HPD2",
"HPD3",
"HPD4",
"HPD5",
"HPD6",
};
static void radeon_print_display_setup(struct drm_device *dev)
{
struct drm_connector *connector;
struct radeon_connector *radeon_connector;
struct drm_encoder *encoder;
struct radeon_encoder *radeon_encoder;
uint32_t devices;
int i = 0;
DRM_INFO("Radeon Display Connectors\n");
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
radeon_connector = to_radeon_connector(connector);
DRM_INFO("Connector %d:\n", i);
DRM_INFO(" %s\n", connector->name);
if (radeon_connector->hpd.hpd != RADEON_HPD_NONE)
DRM_INFO(" %s\n", hpd_names[radeon_connector->hpd.hpd]);
if (radeon_connector->ddc_bus) {
DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
radeon_connector->ddc_bus->rec.mask_clk_reg,
radeon_connector->ddc_bus->rec.mask_data_reg,
radeon_connector->ddc_bus->rec.a_clk_reg,
radeon_connector->ddc_bus->rec.a_data_reg,
radeon_connector->ddc_bus->rec.en_clk_reg,
radeon_connector->ddc_bus->rec.en_data_reg,
radeon_connector->ddc_bus->rec.y_clk_reg,
radeon_connector->ddc_bus->rec.y_data_reg);
if (radeon_connector->router.ddc_valid)
DRM_INFO(" DDC Router 0x%x/0x%x\n",
radeon_connector->router.ddc_mux_control_pin,
radeon_connector->router.ddc_mux_state);
if (radeon_connector->router.cd_valid)
DRM_INFO(" Clock/Data Router 0x%x/0x%x\n",
radeon_connector->router.cd_mux_control_pin,
radeon_connector->router.cd_mux_state);
} else {
if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
}
DRM_INFO(" Encoders:\n");
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
radeon_encoder = to_radeon_encoder(encoder);
devices = radeon_encoder->devices & radeon_connector->devices;
if (devices) {
if (devices & ATOM_DEVICE_CRT1_SUPPORT)
DRM_INFO(" CRT1: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_CRT2_SUPPORT)
DRM_INFO(" CRT2: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_LCD1_SUPPORT)
DRM_INFO(" LCD1: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_DFP1_SUPPORT)
DRM_INFO(" DFP1: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_DFP2_SUPPORT)
DRM_INFO(" DFP2: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_DFP3_SUPPORT)
DRM_INFO(" DFP3: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_DFP4_SUPPORT)
DRM_INFO(" DFP4: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_DFP5_SUPPORT)
DRM_INFO(" DFP5: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_DFP6_SUPPORT)
DRM_INFO(" DFP6: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_TV1_SUPPORT)
DRM_INFO(" TV1: %s\n", encoder_names[radeon_encoder->encoder_id]);
if (devices & ATOM_DEVICE_CV_SUPPORT)
DRM_INFO(" CV: %s\n", encoder_names[radeon_encoder->encoder_id]);
}
}
i++;
}
}
static bool radeon_setup_enc_conn(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
bool ret = false;
if (rdev->bios) {
if (rdev->is_atom_bios) {
ret = radeon_get_atom_connector_info_from_supported_devices_table(dev);
if (ret == false)
ret = radeon_get_atom_connector_info_from_object_table(dev);
} else {
ret = radeon_get_legacy_connector_info_from_bios(dev);
if (ret == false)
ret = radeon_get_legacy_connector_info_from_table(dev);
}
} else {
if (!ASIC_IS_AVIVO(rdev))
ret = radeon_get_legacy_connector_info_from_table(dev);
}
if (ret) {
radeon_setup_encoder_clones(dev);
radeon_print_display_setup(dev);
}
return ret;
}
/* avivo */
/**
* avivo_reduce_ratio - fractional number reduction
*
* @nom: nominator
* @den: denominator
* @nom_min: minimum value for nominator
* @den_min: minimum value for denominator
*
* Find the greatest common divisor and apply it on both nominator and
* denominator, but make nominator and denominator are at least as large
* as their minimum values.
*/
static void avivo_reduce_ratio(unsigned *nom, unsigned *den,
unsigned nom_min, unsigned den_min)
{
unsigned tmp;
/* reduce the numbers to a simpler ratio */
tmp = gcd(*nom, *den);
*nom /= tmp;
*den /= tmp;
/* make sure nominator is large enough */
if (*nom < nom_min) {
tmp = DIV_ROUND_UP(nom_min, *nom);
*nom *= tmp;
*den *= tmp;
}
/* make sure the denominator is large enough */
if (*den < den_min) {
tmp = DIV_ROUND_UP(den_min, *den);
*nom *= tmp;
*den *= tmp;
}
}
/**
* avivo_get_fb_ref_div - feedback and ref divider calculation
*
* @nom: nominator
* @den: denominator
* @post_div: post divider
* @fb_div_max: feedback divider maximum
* @ref_div_max: reference divider maximum
* @fb_div: resulting feedback divider
* @ref_div: resulting reference divider
*
* Calculate feedback and reference divider for a given post divider. Makes
* sure we stay within the limits.
*/
static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div,
unsigned fb_div_max, unsigned ref_div_max,
unsigned *fb_div, unsigned *ref_div)
{
/* limit reference * post divider to a maximum */
ref_div_max = max(min(100 / post_div, ref_div_max), 1u);
/* get matching reference and feedback divider */
*ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max);
*fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den);
/* limit fb divider to its maximum */
if (*fb_div > fb_div_max) {
*ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div);
*fb_div = fb_div_max;
}
}
/**
* radeon_compute_pll_avivo - compute PLL paramaters
*
* @pll: information about the PLL
* @dot_clock_p: resulting pixel clock
* fb_div_p: resulting feedback divider
* frac_fb_div_p: fractional part of the feedback divider
* ref_div_p: resulting reference divider
* post_div_p: resulting reference divider
*
* Try to calculate the PLL parameters to generate the given frequency:
* dot_clock = (ref_freq * feedback_div) / (ref_div * post_div)
*/
void radeon_compute_pll_avivo(struct radeon_pll *pll,
u32 freq,
u32 *dot_clock_p,
u32 *fb_div_p,
u32 *frac_fb_div_p,
u32 *ref_div_p,
u32 *post_div_p)
{
unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ?
freq : freq / 10;
unsigned fb_div_min, fb_div_max, fb_div;
unsigned post_div_min, post_div_max, post_div;
unsigned ref_div_min, ref_div_max, ref_div;
unsigned post_div_best, diff_best;
unsigned nom, den;
/* determine allowed feedback divider range */
fb_div_min = pll->min_feedback_div;
fb_div_max = pll->max_feedback_div;
if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
fb_div_min *= 10;
fb_div_max *= 10;
}
/* determine allowed ref divider range */
if (pll->flags & RADEON_PLL_USE_REF_DIV)
ref_div_min = pll->reference_div;
else
ref_div_min = pll->min_ref_div;
if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV &&
pll->flags & RADEON_PLL_USE_REF_DIV)
ref_div_max = pll->reference_div;
else if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
/* fix for problems on RS880 */
ref_div_max = min(pll->max_ref_div, 7u);
else
ref_div_max = pll->max_ref_div;
/* determine allowed post divider range */
if (pll->flags & RADEON_PLL_USE_POST_DIV) {
post_div_min = pll->post_div;
post_div_max = pll->post_div;
} else {
unsigned vco_min, vco_max;
if (pll->flags & RADEON_PLL_IS_LCD) {
vco_min = pll->lcd_pll_out_min;
vco_max = pll->lcd_pll_out_max;
} else {
vco_min = pll->pll_out_min;
vco_max = pll->pll_out_max;
}
if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
vco_min *= 10;
vco_max *= 10;
}
post_div_min = vco_min / target_clock;
if ((target_clock * post_div_min) < vco_min)
++post_div_min;
if (post_div_min < pll->min_post_div)
post_div_min = pll->min_post_div;
post_div_max = vco_max / target_clock;
if ((target_clock * post_div_max) > vco_max)
--post_div_max;
if (post_div_max > pll->max_post_div)
post_div_max = pll->max_post_div;
}
/* represent the searched ratio as fractional number */
nom = target_clock;
den = pll->reference_freq;
/* reduce the numbers to a simpler ratio */
avivo_reduce_ratio(&nom, &den, fb_div_min, post_div_min);
/* now search for a post divider */
if (pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP)
post_div_best = post_div_min;
else
post_div_best = post_div_max;
diff_best = ~0;
for (post_div = post_div_min; post_div <= post_div_max; ++post_div) {
unsigned diff;
avivo_get_fb_ref_div(nom, den, post_div, fb_div_max,
ref_div_max, &fb_div, &ref_div);
diff = abs(target_clock - (pll->reference_freq * fb_div) /
(ref_div * post_div));
if (diff < diff_best || (diff == diff_best &&
!(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
post_div_best = post_div;
diff_best = diff;
}
}
post_div = post_div_best;
/* get the feedback and reference divider for the optimal value */
avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
&fb_div, &ref_div);
/* reduce the numbers to a simpler ratio once more */
/* this also makes sure that the reference divider is large enough */
avivo_reduce_ratio(&fb_div, &ref_div, fb_div_min, ref_div_min);
/* avoid high jitter with small fractional dividers */
if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV && (fb_div % 10)) {
fb_div_min = max(fb_div_min, (9 - (fb_div % 10)) * 20 + 50);
if (fb_div < fb_div_min) {
unsigned tmp = DIV_ROUND_UP(fb_div_min, fb_div);
fb_div *= tmp;
ref_div *= tmp;
}
}
/* and finally save the result */
if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
*fb_div_p = fb_div / 10;
*frac_fb_div_p = fb_div % 10;
} else {
*fb_div_p = fb_div;
*frac_fb_div_p = 0;
}
*dot_clock_p = ((pll->reference_freq * *fb_div_p * 10) +
(pll->reference_freq * *frac_fb_div_p)) /
(ref_div * post_div * 10);
*ref_div_p = ref_div;
*post_div_p = post_div;
DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
ref_div, post_div);
}
/* pre-avivo */
static inline uint32_t radeon_div(uint64_t n, uint32_t d)
{
uint64_t mod;
n += d / 2;
mod = do_div(n, d);
return n;
}
void radeon_compute_pll_legacy(struct radeon_pll *pll,
uint64_t freq,
uint32_t *dot_clock_p,
uint32_t *fb_div_p,
uint32_t *frac_fb_div_p,
uint32_t *ref_div_p,
uint32_t *post_div_p)
{
uint32_t min_ref_div = pll->min_ref_div;
uint32_t max_ref_div = pll->max_ref_div;
uint32_t min_post_div = pll->min_post_div;
uint32_t max_post_div = pll->max_post_div;
uint32_t min_fractional_feed_div = 0;
uint32_t max_fractional_feed_div = 0;
uint32_t best_vco = pll->best_vco;
uint32_t best_post_div = 1;
uint32_t best_ref_div = 1;
uint32_t best_feedback_div = 1;
uint32_t best_frac_feedback_div = 0;
uint32_t best_freq = -1;
uint32_t best_error = 0xffffffff;
uint32_t best_vco_diff = 1;
uint32_t post_div;
u32 pll_out_min, pll_out_max;
DRM_DEBUG_KMS("PLL freq %llu %u %u\n", freq, pll->min_ref_div, pll->max_ref_div);
freq = freq * 1000;
if (pll->flags & RADEON_PLL_IS_LCD) {
pll_out_min = pll->lcd_pll_out_min;
pll_out_max = pll->lcd_pll_out_max;
} else {
pll_out_min = pll->pll_out_min;
pll_out_max = pll->pll_out_max;
}
if (pll_out_min > 64800)
pll_out_min = 64800;
if (pll->flags & RADEON_PLL_USE_REF_DIV)
min_ref_div = max_ref_div = pll->reference_div;
else {
while (min_ref_div < max_ref_div-1) {
uint32_t mid = (min_ref_div + max_ref_div) / 2;
uint32_t pll_in = pll->reference_freq / mid;
if (pll_in < pll->pll_in_min)
max_ref_div = mid;
else if (pll_in > pll->pll_in_max)
min_ref_div = mid;
else
break;
}
}
if (pll->flags & RADEON_PLL_USE_POST_DIV)
min_post_div = max_post_div = pll->post_div;
if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
min_fractional_feed_div = pll->min_frac_feedback_div;
max_fractional_feed_div = pll->max_frac_feedback_div;
}
for (post_div = max_post_div; post_div >= min_post_div; --post_div) {
uint32_t ref_div;
if ((pll->flags & RADEON_PLL_NO_ODD_POST_DIV) && (post_div & 1))
continue;
/* legacy radeons only have a few post_divs */
if (pll->flags & RADEON_PLL_LEGACY) {
if ((post_div == 5) ||
(post_div == 7) ||
(post_div == 9) ||
(post_div == 10) ||
(post_div == 11) ||
(post_div == 13) ||
(post_div == 14) ||
(post_div == 15))
continue;
}
for (ref_div = min_ref_div; ref_div <= max_ref_div; ++ref_div) {
uint32_t feedback_div, current_freq = 0, error, vco_diff;
uint32_t pll_in = pll->reference_freq / ref_div;
uint32_t min_feed_div = pll->min_feedback_div;
uint32_t max_feed_div = pll->max_feedback_div + 1;
if (pll_in < pll->pll_in_min || pll_in > pll->pll_in_max)
continue;
while (min_feed_div < max_feed_div) {
uint32_t vco;
uint32_t min_frac_feed_div = min_fractional_feed_div;
uint32_t max_frac_feed_div = max_fractional_feed_div + 1;
uint32_t frac_feedback_div;
uint64_t tmp;
feedback_div = (min_feed_div + max_feed_div) / 2;
tmp = (uint64_t)pll->reference_freq * feedback_div;
vco = radeon_div(tmp, ref_div);
if (vco < pll_out_min) {
min_feed_div = feedback_div + 1;
continue;
} else if (vco > pll_out_max) {
max_feed_div = feedback_div;
continue;
}
while (min_frac_feed_div < max_frac_feed_div) {
frac_feedback_div = (min_frac_feed_div + max_frac_feed_div) / 2;
tmp = (uint64_t)pll->reference_freq * 10000 * feedback_div;
tmp += (uint64_t)pll->reference_freq * 1000 * frac_feedback_div;
current_freq = radeon_div(tmp, ref_div * post_div);
if (pll->flags & RADEON_PLL_PREFER_CLOSEST_LOWER) {
if (freq < current_freq)
error = 0xffffffff;
else
error = freq - current_freq;
} else
error = abs(current_freq - freq);
vco_diff = abs(vco - best_vco);
if ((best_vco == 0 && error < best_error) ||
(best_vco != 0 &&
((best_error > 100 && error < best_error - 100) ||
(abs(error - best_error) < 100 && vco_diff < best_vco_diff)))) {
best_post_div = post_div;
best_ref_div = ref_div;
best_feedback_div = feedback_div;
best_frac_feedback_div = frac_feedback_div;
best_freq = current_freq;
best_error = error;
best_vco_diff = vco_diff;
} else if (current_freq == freq) {
if (best_freq == -1) {
best_post_div = post_div;
best_ref_div = ref_div;
best_feedback_div = feedback_div;
best_frac_feedback_div = frac_feedback_div;
best_freq = current_freq;
best_error = error;
best_vco_diff = vco_diff;
} else if (((pll->flags & RADEON_PLL_PREFER_LOW_REF_DIV) && (ref_div < best_ref_div)) ||
((pll->flags & RADEON_PLL_PREFER_HIGH_REF_DIV) && (ref_div > best_ref_div)) ||
((pll->flags & RADEON_PLL_PREFER_LOW_FB_DIV) && (feedback_div < best_feedback_div)) ||
((pll->flags & RADEON_PLL_PREFER_HIGH_FB_DIV) && (feedback_div > best_feedback_div)) ||
((pll->flags & RADEON_PLL_PREFER_LOW_POST_DIV) && (post_div < best_post_div)) ||
((pll->flags & RADEON_PLL_PREFER_HIGH_POST_DIV) && (post_div > best_post_div))) {
best_post_div = post_div;
best_ref_div = ref_div;
best_feedback_div = feedback_div;
best_frac_feedback_div = frac_feedback_div;
best_freq = current_freq;
best_error = error;
best_vco_diff = vco_diff;
}
}
if (current_freq < freq)
min_frac_feed_div = frac_feedback_div + 1;
else
max_frac_feed_div = frac_feedback_div;
}
if (current_freq < freq)
min_feed_div = feedback_div + 1;
else
max_feed_div = feedback_div;
}
}
}
*dot_clock_p = best_freq / 10000;
*fb_div_p = best_feedback_div;
*frac_fb_div_p = best_frac_feedback_div;
*ref_div_p = best_ref_div;
*post_div_p = best_post_div;
DRM_DEBUG_KMS("%lld %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
(long long)freq,
best_freq / 1000, best_feedback_div, best_frac_feedback_div,
best_ref_div, best_post_div);
}
static void radeon_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
if (radeon_fb->obj) {
drm_gem_object_unreference_unlocked(radeon_fb->obj);
}
drm_framebuffer_cleanup(fb);
kfree(radeon_fb);
}
static int radeon_user_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle)
{
struct radeon_framebuffer *radeon_fb = to_radeon_framebuffer(fb);
return drm_gem_handle_create(file_priv, radeon_fb->obj, handle);
}
static const struct drm_framebuffer_funcs radeon_fb_funcs = {
.destroy = radeon_user_framebuffer_destroy,
.create_handle = radeon_user_framebuffer_create_handle,
};
int
radeon_framebuffer_init(struct drm_device *dev,
struct radeon_framebuffer *rfb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj)
{
int ret;
rfb->obj = obj;
drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
if (ret) {
rfb->obj = NULL;
return ret;
}
return 0;
}
static struct drm_framebuffer *
radeon_user_framebuffer_create(struct drm_device *dev,
struct drm_file *file_priv,
struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_gem_object *obj;
struct radeon_framebuffer *radeon_fb;
int ret;
obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
if (obj == NULL) {
dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
"can't create framebuffer\n", mode_cmd->handles[0]);
return ERR_PTR(-ENOENT);
}
radeon_fb = kzalloc(sizeof(*radeon_fb), GFP_KERNEL);
if (radeon_fb == NULL) {
drm_gem_object_unreference_unlocked(obj);
return ERR_PTR(-ENOMEM);
}
ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
if (ret) {
kfree(radeon_fb);
drm_gem_object_unreference_unlocked(obj);
return ERR_PTR(ret);
}
return &radeon_fb->base;
}
static void radeon_output_poll_changed(struct drm_device *dev)
{
struct radeon_device *rdev = dev->dev_private;
radeon_fb_output_poll_changed(rdev);
}
static const struct drm_mode_config_funcs radeon_mode_funcs = {
.fb_create = radeon_user_framebuffer_create,
.output_poll_changed = radeon_output_poll_changed
};
static struct drm_prop_enum_list radeon_tmds_pll_enum_list[] =
{ { 0, "driver" },
{ 1, "bios" },
};
static struct drm_prop_enum_list radeon_tv_std_enum_list[] =
{ { TV_STD_NTSC, "ntsc" },
{ TV_STD_PAL, "pal" },
{ TV_STD_PAL_M, "pal-m" },
{ TV_STD_PAL_60, "pal-60" },
{ TV_STD_NTSC_J, "ntsc-j" },
{ TV_STD_SCART_PAL, "scart-pal" },
{ TV_STD_PAL_CN, "pal-cn" },
{ TV_STD_SECAM, "secam" },
};
static struct drm_prop_enum_list radeon_underscan_enum_list[] =
{ { UNDERSCAN_OFF, "off" },
{ UNDERSCAN_ON, "on" },
{ UNDERSCAN_AUTO, "auto" },
};
static struct drm_prop_enum_list radeon_audio_enum_list[] =
{ { RADEON_AUDIO_DISABLE, "off" },
{ RADEON_AUDIO_ENABLE, "on" },
{ RADEON_AUDIO_AUTO, "auto" },
};
/* XXX support different dither options? spatial, temporal, both, etc. */
static struct drm_prop_enum_list radeon_dither_enum_list[] =
{ { RADEON_FMT_DITHER_DISABLE, "off" },
{ RADEON_FMT_DITHER_ENABLE, "on" },
};
static int radeon_modeset_create_props(struct radeon_device *rdev)
{
int sz;
if (rdev->is_atom_bios) {
rdev->mode_info.coherent_mode_property =
drm_property_create_range(rdev->ddev, 0 , "coherent", 0, 1);
if (!rdev->mode_info.coherent_mode_property)
return -ENOMEM;
}
if (!ASIC_IS_AVIVO(rdev)) {
sz = ARRAY_SIZE(radeon_tmds_pll_enum_list);
rdev->mode_info.tmds_pll_property =
drm_property_create_enum(rdev->ddev, 0,
"tmds_pll",
radeon_tmds_pll_enum_list, sz);
}
rdev->mode_info.load_detect_property =
drm_property_create_range(rdev->ddev, 0, "load detection", 0, 1);
if (!rdev->mode_info.load_detect_property)
return -ENOMEM;
drm_mode_create_scaling_mode_property(rdev->ddev);
sz = ARRAY_SIZE(radeon_tv_std_enum_list);
rdev->mode_info.tv_std_property =
drm_property_create_enum(rdev->ddev, 0,
"tv standard",
radeon_tv_std_enum_list, sz);
sz = ARRAY_SIZE(radeon_underscan_enum_list);
rdev->mode_info.underscan_property =
drm_property_create_enum(rdev->ddev, 0,
"underscan",
radeon_underscan_enum_list, sz);
rdev->mode_info.underscan_hborder_property =
drm_property_create_range(rdev->ddev, 0,
"underscan hborder", 0, 128);
if (!rdev->mode_info.underscan_hborder_property)
return -ENOMEM;
rdev->mode_info.underscan_vborder_property =
drm_property_create_range(rdev->ddev, 0,
"underscan vborder", 0, 128);
if (!rdev->mode_info.underscan_vborder_property)
return -ENOMEM;
sz = ARRAY_SIZE(radeon_audio_enum_list);
rdev->mode_info.audio_property =
drm_property_create_enum(rdev->ddev, 0,
"audio",
radeon_audio_enum_list, sz);
sz = ARRAY_SIZE(radeon_dither_enum_list);
rdev->mode_info.dither_property =
drm_property_create_enum(rdev->ddev, 0,
"dither",
radeon_dither_enum_list, sz);
return 0;
}
void radeon_update_display_priority(struct radeon_device *rdev)
{
/* adjustment options for the display watermarks */
if ((radeon_disp_priority == 0) || (radeon_disp_priority > 2)) {
/* set display priority to high for r3xx, rv515 chips
* this avoids flickering due to underflow to the
* display controllers during heavy acceleration.
* Don't force high on rs4xx igp chips as it seems to
* affect the sound card. See kernel bug 15982.
*/
if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
!(rdev->flags & RADEON_IS_IGP))
rdev->disp_priority = 2;
else
rdev->disp_priority = 0;
} else
rdev->disp_priority = radeon_disp_priority;
}
/*
* Allocate hdmi structs and determine register offsets
*/
static void radeon_afmt_init(struct radeon_device *rdev)
{
int i;
for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++)
rdev->mode_info.afmt[i] = NULL;
if (ASIC_IS_NODCE(rdev)) {
/* nothing to do */
} else if (ASIC_IS_DCE4(rdev)) {
static uint32_t eg_offsets[] = {
EVERGREEN_CRTC0_REGISTER_OFFSET,
EVERGREEN_CRTC1_REGISTER_OFFSET,
EVERGREEN_CRTC2_REGISTER_OFFSET,
EVERGREEN_CRTC3_REGISTER_OFFSET,
EVERGREEN_CRTC4_REGISTER_OFFSET,
EVERGREEN_CRTC5_REGISTER_OFFSET,
0x13830 - 0x7030,
};
int num_afmt;
/* DCE8 has 7 audio blocks tied to DIG encoders */
/* DCE6 has 6 audio blocks tied to DIG encoders */
/* DCE4/5 has 6 audio blocks tied to DIG encoders */
/* DCE4.1 has 2 audio blocks tied to DIG encoders */
if (ASIC_IS_DCE8(rdev))
num_afmt = 7;
else if (ASIC_IS_DCE6(rdev))
num_afmt = 6;
else if (ASIC_IS_DCE5(rdev))
num_afmt = 6;
else if (ASIC_IS_DCE41(rdev))
num_afmt = 2;
else /* DCE4 */
num_afmt = 6;
BUG_ON(num_afmt > ARRAY_SIZE(eg_offsets));
for (i = 0; i < num_afmt; i++) {
rdev->mode_info.afmt[i] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
if (rdev->mode_info.afmt[i]) {
rdev->mode_info.afmt[i]->offset = eg_offsets[i];
rdev->mode_info.afmt[i]->id = i;
}
}
} else if (ASIC_IS_DCE3(rdev)) {
/* DCE3.x has 2 audio blocks tied to DIG encoders */
rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
if (rdev->mode_info.afmt[0]) {
rdev->mode_info.afmt[0]->offset = DCE3_HDMI_OFFSET0;
rdev->mode_info.afmt[0]->id = 0;
}
rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
if (rdev->mode_info.afmt[1]) {
rdev->mode_info.afmt[1]->offset = DCE3_HDMI_OFFSET1;
rdev->mode_info.afmt[1]->id = 1;
}
} else if (ASIC_IS_DCE2(rdev)) {
/* DCE2 has at least 1 routable audio block */
rdev->mode_info.afmt[0] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
if (rdev->mode_info.afmt[0]) {
rdev->mode_info.afmt[0]->offset = DCE2_HDMI_OFFSET0;
rdev->mode_info.afmt[0]->id = 0;
}
/* r6xx has 2 routable audio blocks */
if (rdev->family >= CHIP_R600) {
rdev->mode_info.afmt[1] = kzalloc(sizeof(struct radeon_afmt), GFP_KERNEL);
if (rdev->mode_info.afmt[1]) {
rdev->mode_info.afmt[1]->offset = DCE2_HDMI_OFFSET1;
rdev->mode_info.afmt[1]->id = 1;
}
}
}
}
static void radeon_afmt_fini(struct radeon_device *rdev)
{
int i;
for (i = 0; i < RADEON_MAX_AFMT_BLOCKS; i++) {
kfree(rdev->mode_info.afmt[i]);
rdev->mode_info.afmt[i] = NULL;
}
}
int radeon_modeset_init(struct radeon_device *rdev)
{
int i;
int ret;
drm_mode_config_init(rdev->ddev);
rdev->mode_info.mode_config_initialized = true;
rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
if (ASIC_IS_DCE5(rdev)) {
rdev->ddev->mode_config.max_width = 16384;
rdev->ddev->mode_config.max_height = 16384;
} else if (ASIC_IS_AVIVO(rdev)) {
rdev->ddev->mode_config.max_width = 8192;
rdev->ddev->mode_config.max_height = 8192;
} else {
rdev->ddev->mode_config.max_width = 4096;
rdev->ddev->mode_config.max_height = 4096;
}
rdev->ddev->mode_config.preferred_depth = 24;
rdev->ddev->mode_config.prefer_shadow = 1;
rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
ret = radeon_modeset_create_props(rdev);
if (ret) {
return ret;
}
/* init i2c buses */
radeon_i2c_init(rdev);
/* check combios for a valid hardcoded EDID - Sun servers */
if (!rdev->is_atom_bios) {
/* check for hardcoded EDID in BIOS */
radeon_combios_check_hardcoded_edid(rdev);
}
/* allocate crtcs */
for (i = 0; i < rdev->num_crtc; i++) {
radeon_crtc_init(rdev->ddev, i);
}
/* okay we should have all the bios connectors */
ret = radeon_setup_enc_conn(rdev->ddev);
if (!ret) {
return ret;
}
/* init dig PHYs, disp eng pll */
if (rdev->is_atom_bios) {
radeon_atom_encoder_init(rdev);
radeon_atom_disp_eng_pll_init(rdev);
}
/* initialize hpd */
radeon_hpd_init(rdev);
/* setup afmt */
radeon_afmt_init(rdev);
radeon_fbdev_init(rdev);
drm_kms_helper_poll_init(rdev->ddev);
if (rdev->pm.dpm_enabled) {
/* do dpm late init */
ret = radeon_pm_late_init(rdev);
if (ret) {
rdev->pm.dpm_enabled = false;
DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
}
/* set the dpm state for PX since there won't be
* a modeset to call this.
*/
radeon_pm_compute_clocks(rdev);
}
return 0;
}
void radeon_modeset_fini(struct radeon_device *rdev)
{
radeon_fbdev_fini(rdev);
kfree(rdev->mode_info.bios_hardcoded_edid);
if (rdev->mode_info.mode_config_initialized) {
radeon_afmt_fini(rdev);
drm_kms_helper_poll_fini(rdev->ddev);
radeon_hpd_fini(rdev);
drm_mode_config_cleanup(rdev->ddev);
rdev->mode_info.mode_config_initialized = false;
}
/* free i2c buses */
radeon_i2c_fini(rdev);
}
static bool is_hdtv_mode(const struct drm_display_mode *mode)
{
/* try and guess if this is a tv or a monitor */
if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
(mode->vdisplay == 576) || /* 576p */
(mode->vdisplay == 720) || /* 720p */
(mode->vdisplay == 1080)) /* 1080p */
return true;
else
return false;
}
bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = crtc->dev;
struct radeon_device *rdev = dev->dev_private;
struct drm_encoder *encoder;
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
struct radeon_encoder *radeon_encoder;
struct drm_connector *connector;
struct radeon_connector *radeon_connector;
bool first = true;
u32 src_v = 1, dst_v = 1;
u32 src_h = 1, dst_h = 1;
radeon_crtc->h_border = 0;
radeon_crtc->v_border = 0;
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
if (encoder->crtc != crtc)
continue;
radeon_encoder = to_radeon_encoder(encoder);
connector = radeon_get_connector_for_encoder(encoder);
radeon_connector = to_radeon_connector(connector);
if (first) {
/* set scaling */
if (radeon_encoder->rmx_type == RMX_OFF)
radeon_crtc->rmx_type = RMX_OFF;
else if (mode->hdisplay < radeon_encoder->native_mode.hdisplay ||
mode->vdisplay < radeon_encoder->native_mode.vdisplay)
radeon_crtc->rmx_type = radeon_encoder->rmx_type;
else
radeon_crtc->rmx_type = RMX_OFF;
/* copy native mode */
memcpy(&radeon_crtc->native_mode,
&radeon_encoder->native_mode,
sizeof(struct drm_display_mode));
src_v = crtc->mode.vdisplay;
dst_v = radeon_crtc->native_mode.vdisplay;
src_h = crtc->mode.hdisplay;
dst_h = radeon_crtc->native_mode.hdisplay;
/* fix up for overscan on hdmi */
if (ASIC_IS_AVIVO(rdev) &&
(!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
((radeon_encoder->underscan_type == UNDERSCAN_ON) ||
((radeon_encoder->underscan_type == UNDERSCAN_AUTO) &&
drm_detect_hdmi_monitor(radeon_connector_edid(connector)) &&
is_hdtv_mode(mode)))) {
if (radeon_encoder->underscan_hborder != 0)
radeon_crtc->h_border = radeon_encoder->underscan_hborder;
else
radeon_crtc->h_border = (mode->hdisplay >> 5) + 16;
if (radeon_encoder->underscan_vborder != 0)
radeon_crtc->v_border = radeon_encoder->underscan_vborder;
else
radeon_crtc->v_border = (mode->vdisplay >> 5) + 16;
radeon_crtc->rmx_type = RMX_FULL;
src_v = crtc->mode.vdisplay;
dst_v = crtc->mode.vdisplay - (radeon_crtc->v_border * 2);
src_h = crtc->mode.hdisplay;
dst_h = crtc->mode.hdisplay - (radeon_crtc->h_border * 2);
}
first = false;
} else {
if (radeon_crtc->rmx_type != radeon_encoder->rmx_type) {
/* WARNING: Right now this can't happen but
* in the future we need to check that scaling
* are consistent across different encoder
* (ie all encoder can work with the same
* scaling).
*/
DRM_ERROR("Scaling not consistent across encoder.\n");
return false;
}
}
}
if (radeon_crtc->rmx_type != RMX_OFF) {
fixed20_12 a, b;
a.full = dfixed_const(src_v);
b.full = dfixed_const(dst_v);
radeon_crtc->vsc.full = dfixed_div(a, b);
a.full = dfixed_const(src_h);
b.full = dfixed_const(dst_h);
radeon_crtc->hsc.full = dfixed_div(a, b);
} else {
radeon_crtc->vsc.full = dfixed_const(1);
radeon_crtc->hsc.full = dfixed_const(1);
}
return true;
}
/*
* Retrieve current video scanout position of crtc on a given gpu, and
* an optional accurate timestamp of when query happened.
*
* \param dev Device to query.
* \param crtc Crtc to query.
* \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
* \param *vpos Location where vertical scanout position should be stored.
* \param *hpos Location where horizontal scanout position should go.
* \param *stime Target location for timestamp taken immediately before
* scanout position query. Can be NULL to skip timestamp.
* \param *etime Target location for timestamp taken immediately after
* scanout position query. Can be NULL to skip timestamp.
*
* Returns vpos as a positive number while in active scanout area.
* Returns vpos as a negative number inside vblank, counting the number
* of scanlines to go until end of vblank, e.g., -1 means "one scanline
* until start of active scanout / end of vblank."
*
* \return Flags, or'ed together as follows:
*
* DRM_SCANOUTPOS_VALID = Query successful.
* DRM_SCANOUTPOS_INVBL = Inside vblank.
* DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
* this flag means that returned position may be offset by a constant but
* unknown small number of scanlines wrt. real scanout position.
*
*/
int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, unsigned int flags,
int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
{
u32 stat_crtc = 0, vbl = 0, position = 0;
int vbl_start, vbl_end, vtotal, ret = 0;
bool in_vbl = true;
struct radeon_device *rdev = dev->dev_private;
/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
/* Get optional system timestamp before query. */
if (stime)
*stime = ktime_get();
if (ASIC_IS_DCE4(rdev)) {
if (crtc == 0) {
vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
EVERGREEN_CRTC0_REGISTER_OFFSET);
position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
EVERGREEN_CRTC0_REGISTER_OFFSET);
ret |= DRM_SCANOUTPOS_VALID;
}
if (crtc == 1) {
vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
EVERGREEN_CRTC1_REGISTER_OFFSET);
position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
EVERGREEN_CRTC1_REGISTER_OFFSET);
ret |= DRM_SCANOUTPOS_VALID;
}
if (crtc == 2) {
vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
EVERGREEN_CRTC2_REGISTER_OFFSET);
position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
EVERGREEN_CRTC2_REGISTER_OFFSET);
ret |= DRM_SCANOUTPOS_VALID;
}
if (crtc == 3) {
vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
EVERGREEN_CRTC3_REGISTER_OFFSET);
position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
EVERGREEN_CRTC3_REGISTER_OFFSET);
ret |= DRM_SCANOUTPOS_VALID;
}
if (crtc == 4) {
vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
EVERGREEN_CRTC4_REGISTER_OFFSET);
position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
EVERGREEN_CRTC4_REGISTER_OFFSET);
ret |= DRM_SCANOUTPOS_VALID;
}
if (crtc == 5) {
vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
EVERGREEN_CRTC5_REGISTER_OFFSET);
position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
EVERGREEN_CRTC5_REGISTER_OFFSET);
ret |= DRM_SCANOUTPOS_VALID;
}
} else if (ASIC_IS_AVIVO(rdev)) {
if (crtc == 0) {
vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END);
position = RREG32(AVIVO_D1CRTC_STATUS_POSITION);
ret |= DRM_SCANOUTPOS_VALID;
}
if (crtc == 1) {
vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END);
position = RREG32(AVIVO_D2CRTC_STATUS_POSITION);
ret |= DRM_SCANOUTPOS_VALID;
}
} else {
/* Pre-AVIVO: Different encoding of scanout pos and vblank interval. */
if (crtc == 0) {
/* Assume vbl_end == 0, get vbl_start from
* upper 16 bits.
*/
vbl = (RREG32(RADEON_CRTC_V_TOTAL_DISP) &
RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
/* Only retrieve vpos from upper 16 bits, set hpos == 0. */
position = (RREG32(RADEON_CRTC_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
stat_crtc = RREG32(RADEON_CRTC_STATUS);
if (!(stat_crtc & 1))
in_vbl = false;
ret |= DRM_SCANOUTPOS_VALID;
}
if (crtc == 1) {
vbl = (RREG32(RADEON_CRTC2_V_TOTAL_DISP) &
RADEON_CRTC_V_DISP) >> RADEON_CRTC_V_DISP_SHIFT;
position = (RREG32(RADEON_CRTC2_VLINE_CRNT_VLINE) >> 16) & RADEON_CRTC_V_TOTAL;
stat_crtc = RREG32(RADEON_CRTC2_STATUS);
if (!(stat_crtc & 1))
in_vbl = false;
ret |= DRM_SCANOUTPOS_VALID;
}
}
/* Get optional system timestamp after query. */
if (etime)
*etime = ktime_get();
/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
/* Decode into vertical and horizontal scanout position. */
*vpos = position & 0x1fff;
*hpos = (position >> 16) & 0x1fff;
/* Valid vblank area boundaries from gpu retrieved? */
if (vbl > 0) {
/* Yes: Decode. */
ret |= DRM_SCANOUTPOS_ACCURATE;
vbl_start = vbl & 0x1fff;
vbl_end = (vbl >> 16) & 0x1fff;
}
else {
/* No: Fake something reasonable which gives at least ok results. */
vbl_start = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay;
vbl_end = 0;
}
/* Test scanout position against vblank region. */
if ((*vpos < vbl_start) && (*vpos >= vbl_end))
in_vbl = false;
/* Check if inside vblank area and apply corrective offsets:
* vpos will then be >=0 in video scanout area, but negative
* within vblank area, counting down the number of lines until
* start of scanout.
*/
/* Inside "upper part" of vblank area? Apply corrective offset if so: */
if (in_vbl && (*vpos >= vbl_start)) {
vtotal = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal;
*vpos = *vpos - vtotal;
}
/* Correct for shifted end of vbl at vbl_end. */
*vpos = *vpos - vbl_end;
/* In vblank? */
if (in_vbl)
ret |= DRM_SCANOUTPOS_IN_VBLANK;
/* Is vpos outside nominal vblank area, but less than
* 1/100 of a frame height away from start of vblank?
* If so, assume this isn't a massively delayed vblank
* interrupt, but a vblank interrupt that fired a few
* microseconds before true start of vblank. Compensate
* by adding a full frame duration to the final timestamp.
* Happens, e.g., on ATI R500, R600.
*
* We only do this if DRM_CALLED_FROM_VBLIRQ.
*/
if ((flags & DRM_CALLED_FROM_VBLIRQ) && !in_vbl) {
vbl_start = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vdisplay;
vtotal = rdev->mode_info.crtcs[crtc]->base.hwmode.crtc_vtotal;
if (vbl_start - *vpos < vtotal / 100) {
*vpos -= vtotal;
/* Signal this correction as "applied". */
ret |= 0x8;
}
}
return ret;
}
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