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authorDave Airlie <airlied@redhat.com>2014-01-22 09:13:13 +1000
committerDave Airlie <airlied@redhat.com>2014-01-22 09:13:13 +1000
commitf5395ba35f2ae52eb5839f8046e4aeef6df7f357 (patch)
tree12f147678c6a3eb110d25b36e630de0faefdc0da
parent2b76a676f797b4bfbe6e856f5f608bed4e6e92b4 (diff)
parent095163bad59bfeed294a81e0d873fa8943e4fa01 (diff)
downloadlinux-linaro-stable-f5395ba35f2ae52eb5839f8046e4aeef6df7f357.tar.gz
Merge branch 'drm-vbl-timestamp' of git://gitorious.org/vsyrjala/linux into drm-next
Here's the vblank timestamp pull request you wanted. I addressed the few bugs that Mario pointed out and added the r-bs. As it has been a while since I made the changes, I gave it a quick spin on a few different i915 machines. Fortunately everything still seems to be fine. * 'drm-vbl-timestamp' of git://gitorious.org/vsyrjala/linux: drm/i915: Add a kludge for DSL incrementing too late and ISR not working drm/radeon: Move the early vblank IRQ fixup to radeon_get_crtc_scanoutpos() drm: Pass 'flags' from the caller to .get_scanout_position() drm: Fix vblank timestamping constants for interlaced modes drm/i915: Fix scanoutpos calculations for interlaced modes drm: Change {pixel,line,frame}dur_ns from s64 to int drm: Use crtc_clock in drm_calc_timestamping_constants() drm/radeon: Populate crtc_clock in radeon_atom_get_tv_timings() drm: Simplify the math in drm_calc_timestamping_constants() drm: Improve drm_calc_timestamping_constants() documentation drm/i915: Call drm_calc_timestamping_constants() earlier drm/i915: Kill hwmode save/restore drm: Pass the display mode to drm_calc_vbltimestamp_from_scanoutpos() drm: Pass the display mode to drm_calc_timestamping_constants()
-rw-r--r--drivers/gpu/drm/drm_crtc_helper.c2
-rw-r--r--drivers/gpu/drm/drm_irq.c109
-rw-r--r--drivers/gpu/drm/i915/i915_irq.c91
-rw-r--r--drivers/gpu/drm/i915/intel_display.c29
-rw-r--r--drivers/gpu/drm/radeon/radeon_atombios.c6
-rw-r--r--drivers/gpu/drm/radeon/radeon_display.c29
-rw-r--r--drivers/gpu/drm/radeon/radeon_drv.c1
-rw-r--r--drivers/gpu/drm/radeon/radeon_kms.c2
-rw-r--r--drivers/gpu/drm/radeon/radeon_mode.h1
-rw-r--r--drivers/gpu/drm/radeon/radeon_pm.c2
-rw-r--r--include/drm/drmP.h8
-rw-r--r--include/drm/drm_crtc.h2
12 files changed, 144 insertions, 138 deletions
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 01361aba033b..245fe4fa9c9e 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -536,7 +536,7 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
* are later needed by vblank and swap-completion
* timestamping. They are derived from true hwmode.
*/
- drm_calc_timestamping_constants(crtc);
+ drm_calc_timestamping_constants(crtc, &crtc->hwmode);
/* FIXME: add subpixel order */
done:
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index e7de2da57234..c2676b5908d9 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -436,45 +436,41 @@ int drm_control(struct drm_device *dev, void *data,
}
/**
- * drm_calc_timestamping_constants - Calculate and
- * store various constants which are later needed by
- * vblank and swap-completion timestamping, e.g, by
- * drm_calc_vbltimestamp_from_scanoutpos().
- * They are derived from crtc's true scanout timing,
- * so they take things like panel scaling or other
- * adjustments into account.
+ * drm_calc_timestamping_constants - Calculate vblank timestamp constants
*
* @crtc drm_crtc whose timestamp constants should be updated.
+ * @mode display mode containing the scanout timings
*
+ * Calculate and store various constants which are later
+ * needed by vblank and swap-completion timestamping, e.g,
+ * by drm_calc_vbltimestamp_from_scanoutpos(). They are
+ * derived from crtc's true scanout timing, so they take
+ * things like panel scaling or other adjustments into account.
*/
-void drm_calc_timestamping_constants(struct drm_crtc *crtc)
+void drm_calc_timestamping_constants(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode)
{
- s64 linedur_ns = 0, pixeldur_ns = 0, framedur_ns = 0;
- u64 dotclock;
-
- /* Dot clock in Hz: */
- dotclock = (u64) crtc->hwmode.clock * 1000;
-
- /* Fields of interlaced scanout modes are only half a frame duration.
- * Double the dotclock to get half the frame-/line-/pixelduration.
- */
- if (crtc->hwmode.flags & DRM_MODE_FLAG_INTERLACE)
- dotclock *= 2;
+ int linedur_ns = 0, pixeldur_ns = 0, framedur_ns = 0;
+ int dotclock = mode->crtc_clock;
/* Valid dotclock? */
if (dotclock > 0) {
- int frame_size;
- /* Convert scanline length in pixels and video dot clock to
- * line duration, frame duration and pixel duration in
- * nanoseconds:
+ int frame_size = mode->crtc_htotal * mode->crtc_vtotal;
+
+ /*
+ * Convert scanline length in pixels and video
+ * dot clock to line duration, frame duration
+ * and pixel duration in nanoseconds:
*/
- pixeldur_ns = (s64) div64_u64(1000000000, dotclock);
- linedur_ns = (s64) div64_u64(((u64) crtc->hwmode.crtc_htotal *
- 1000000000), dotclock);
- frame_size = crtc->hwmode.crtc_htotal *
- crtc->hwmode.crtc_vtotal;
- framedur_ns = (s64) div64_u64((u64) frame_size * 1000000000,
- dotclock);
+ pixeldur_ns = 1000000 / dotclock;
+ linedur_ns = div_u64((u64) mode->crtc_htotal * 1000000, dotclock);
+ framedur_ns = div_u64((u64) frame_size * 1000000, dotclock);
+
+ /*
+ * Fields of interlaced scanout modes are only half a frame duration.
+ */
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+ framedur_ns /= 2;
} else
DRM_ERROR("crtc %d: Can't calculate constants, dotclock = 0!\n",
crtc->base.id);
@@ -484,11 +480,11 @@ void drm_calc_timestamping_constants(struct drm_crtc *crtc)
crtc->framedur_ns = framedur_ns;
DRM_DEBUG("crtc %d: hwmode: htotal %d, vtotal %d, vdisplay %d\n",
- crtc->base.id, crtc->hwmode.crtc_htotal,
- crtc->hwmode.crtc_vtotal, crtc->hwmode.crtc_vdisplay);
+ crtc->base.id, mode->crtc_htotal,
+ mode->crtc_vtotal, mode->crtc_vdisplay);
DRM_DEBUG("crtc %d: clock %d kHz framedur %d linedur %d, pixeldur %d\n",
- crtc->base.id, (int) dotclock/1000, (int) framedur_ns,
- (int) linedur_ns, (int) pixeldur_ns);
+ crtc->base.id, dotclock, framedur_ns,
+ linedur_ns, pixeldur_ns);
}
EXPORT_SYMBOL(drm_calc_timestamping_constants);
@@ -521,6 +517,7 @@ EXPORT_SYMBOL(drm_calc_timestamping_constants);
* 0 = Default.
* DRM_CALLED_FROM_VBLIRQ = If function is called from vbl irq handler.
* @refcrtc: drm_crtc* of crtc which defines scanout timing.
+ * @mode: mode which defines the scanout timings
*
* Returns negative value on error, failure or if not supported in current
* video mode:
@@ -540,14 +537,14 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
int *max_error,
struct timeval *vblank_time,
unsigned flags,
- struct drm_crtc *refcrtc)
+ const struct drm_crtc *refcrtc,
+ const struct drm_display_mode *mode)
{
ktime_t stime, etime, mono_time_offset;
struct timeval tv_etime;
- struct drm_display_mode *mode;
- int vbl_status, vtotal, vdisplay;
+ int vbl_status;
int vpos, hpos, i;
- s64 framedur_ns, linedur_ns, pixeldur_ns, delta_ns, duration_ns;
+ int framedur_ns, linedur_ns, pixeldur_ns, delta_ns, duration_ns;
bool invbl;
if (crtc < 0 || crtc >= dev->num_crtcs) {
@@ -561,10 +558,6 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
return -EIO;
}
- mode = &refcrtc->hwmode;
- vtotal = mode->crtc_vtotal;
- vdisplay = mode->crtc_vdisplay;
-
/* Durations of frames, lines, pixels in nanoseconds. */
framedur_ns = refcrtc->framedur_ns;
linedur_ns = refcrtc->linedur_ns;
@@ -573,7 +566,7 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
/* If mode timing undefined, just return as no-op:
* Happens during initial modesetting of a crtc.
*/
- if (vtotal <= 0 || vdisplay <= 0 || framedur_ns == 0) {
+ if (framedur_ns == 0) {
DRM_DEBUG("crtc %d: Noop due to uninitialized mode.\n", crtc);
return -EAGAIN;
}
@@ -590,7 +583,7 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
* Get vertical and horizontal scanout position vpos, hpos,
* and bounding timestamps stime, etime, pre/post query.
*/
- vbl_status = dev->driver->get_scanout_position(dev, crtc, &vpos,
+ vbl_status = dev->driver->get_scanout_position(dev, crtc, flags, &vpos,
&hpos, &stime, &etime);
/*
@@ -611,18 +604,18 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
duration_ns = ktime_to_ns(etime) - ktime_to_ns(stime);
/* Accept result with < max_error nsecs timing uncertainty. */
- if (duration_ns <= (s64) *max_error)
+ if (duration_ns <= *max_error)
break;
}
/* Noisy system timing? */
if (i == DRM_TIMESTAMP_MAXRETRIES) {
DRM_DEBUG("crtc %d: Noisy timestamp %d us > %d us [%d reps].\n",
- crtc, (int) duration_ns/1000, *max_error/1000, i);
+ crtc, duration_ns/1000, *max_error/1000, i);
}
/* Return upper bound of timestamp precision error. */
- *max_error = (int) duration_ns;
+ *max_error = duration_ns;
/* Check if in vblank area:
* vpos is >=0 in video scanout area, but negative
@@ -635,25 +628,7 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
* since start of scanout at first display scanline. delta_ns
* can be negative if start of scanout hasn't happened yet.
*/
- delta_ns = (s64) vpos * linedur_ns + (s64) hpos * pixeldur_ns;
-
- /* 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) && !invbl &&
- ((vdisplay - vpos) < vtotal / 100)) {
- delta_ns = delta_ns - framedur_ns;
-
- /* Signal this correction as "applied". */
- vbl_status |= 0x8;
- }
+ delta_ns = vpos * linedur_ns + hpos * pixeldur_ns;
if (!drm_timestamp_monotonic)
etime = ktime_sub(etime, mono_time_offset);
@@ -673,7 +648,7 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev, int crtc,
crtc, (int)vbl_status, hpos, vpos,
(long)tv_etime.tv_sec, (long)tv_etime.tv_usec,
(long)vblank_time->tv_sec, (long)vblank_time->tv_usec,
- (int)duration_ns/1000, i);
+ duration_ns/1000, i);
vbl_status = DRM_VBLANKTIME_SCANOUTPOS_METHOD;
if (invbl)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 6d11e253218a..17d8fcb1b6f7 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -621,36 +621,15 @@ static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
#define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__))
#define __raw_i915_read16(dev_priv__, reg__) readw((dev_priv__)->regs + (reg__))
-static bool intel_pipe_in_vblank_locked(struct drm_device *dev, enum pipe pipe)
+static bool ilk_pipe_in_vblank_locked(struct drm_device *dev, enum pipe pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t status;
- int reg;
- if (IS_VALLEYVIEW(dev)) {
- status = pipe == PIPE_A ?
- I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT :
- I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
-
- reg = VLV_ISR;
- } else if (IS_GEN2(dev)) {
- status = pipe == PIPE_A ?
- I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT :
- I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
-
- reg = ISR;
- } else if (INTEL_INFO(dev)->gen < 5) {
- status = pipe == PIPE_A ?
- I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT :
- I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
-
- reg = ISR;
- } else if (INTEL_INFO(dev)->gen < 7) {
+ if (INTEL_INFO(dev)->gen < 7) {
status = pipe == PIPE_A ?
DE_PIPEA_VBLANK :
DE_PIPEB_VBLANK;
-
- reg = DEISR;
} else {
switch (pipe) {
default:
@@ -664,18 +643,14 @@ static bool intel_pipe_in_vblank_locked(struct drm_device *dev, enum pipe pipe)
status = DE_PIPEC_VBLANK_IVB;
break;
}
-
- reg = DEISR;
}
- if (IS_GEN2(dev))
- return __raw_i915_read16(dev_priv, reg) & status;
- else
- return __raw_i915_read32(dev_priv, reg) & status;
+ return __raw_i915_read32(dev_priv, DEISR) & status;
}
static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
- int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
+ unsigned int flags, int *vpos, int *hpos,
+ ktime_t *stime, ktime_t *etime)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
@@ -698,6 +673,12 @@ static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
vbl_start = mode->crtc_vblank_start;
vbl_end = mode->crtc_vblank_end;
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
+ vbl_start = DIV_ROUND_UP(vbl_start, 2);
+ vbl_end /= 2;
+ vtotal /= 2;
+ }
+
ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE;
/*
@@ -722,17 +703,42 @@ static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
else
position = __raw_i915_read32(dev_priv, PIPEDSL(pipe)) & DSL_LINEMASK_GEN3;
- /*
- * The scanline counter increments at the leading edge
- * of hsync, ie. it completely misses the active portion
- * of the line. Fix up the counter at both edges of vblank
- * to get a more accurate picture whether we're in vblank
- * or not.
- */
- in_vbl = intel_pipe_in_vblank_locked(dev, pipe);
- if ((in_vbl && position == vbl_start - 1) ||
- (!in_vbl && position == vbl_end - 1))
- position = (position + 1) % vtotal;
+ if (HAS_PCH_SPLIT(dev)) {
+ /*
+ * The scanline counter increments at the leading edge
+ * of hsync, ie. it completely misses the active portion
+ * of the line. Fix up the counter at both edges of vblank
+ * to get a more accurate picture whether we're in vblank
+ * or not.
+ */
+ in_vbl = ilk_pipe_in_vblank_locked(dev, pipe);
+ if ((in_vbl && position == vbl_start - 1) ||
+ (!in_vbl && position == vbl_end - 1))
+ position = (position + 1) % vtotal;
+ } else {
+ /*
+ * ISR vblank status bits don't work the way we'd want
+ * them to work on non-PCH platforms (for
+ * ilk_pipe_in_vblank_locked()), and there doesn't
+ * appear any other way to determine if we're currently
+ * in vblank.
+ *
+ * Instead let's assume that we're already in vblank if
+ * we got called from the vblank interrupt and the
+ * scanline counter value indicates that we're on the
+ * line just prior to vblank start. This should result
+ * in the correct answer, unless the vblank interrupt
+ * delivery really got delayed for almost exactly one
+ * full frame/field.
+ */
+ if (flags & DRM_CALLED_FROM_VBLIRQ &&
+ position == vbl_start - 1) {
+ position = (position + 1) % vtotal;
+
+ /* Signal this correction as "applied". */
+ ret |= 0x8;
+ }
+ }
} else {
/* Have access to pixelcount since start of frame.
* We can split this into vertical and horizontal
@@ -809,7 +815,8 @@ static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe,
/* Helper routine in DRM core does all the work: */
return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error,
vblank_time, flags,
- crtc);
+ crtc,
+ &to_intel_crtc(crtc)->config.adjusted_mode);
}
static bool intel_hpd_irq_event(struct drm_device *dev,
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e77d4b8856a7..14b024becb91 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9597,21 +9597,19 @@ static int __intel_set_mode(struct drm_crtc *crtc,
{
struct drm_device *dev = crtc->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_display_mode *saved_mode, *saved_hwmode;
+ struct drm_display_mode *saved_mode;
struct intel_crtc_config *pipe_config = NULL;
struct intel_crtc *intel_crtc;
unsigned disable_pipes, prepare_pipes, modeset_pipes;
int ret = 0;
- saved_mode = kcalloc(2, sizeof(*saved_mode), GFP_KERNEL);
+ saved_mode = kmalloc(sizeof(*saved_mode), GFP_KERNEL);
if (!saved_mode)
return -ENOMEM;
- saved_hwmode = saved_mode + 1;
intel_modeset_affected_pipes(crtc, &modeset_pipes,
&prepare_pipes, &disable_pipes);
- *saved_hwmode = crtc->hwmode;
*saved_mode = crtc->mode;
/* Hack: Because we don't (yet) support global modeset on multiple
@@ -9662,6 +9660,14 @@ static int __intel_set_mode(struct drm_crtc *crtc,
/* mode_set/enable/disable functions rely on a correct pipe
* config. */
to_intel_crtc(crtc)->config = *pipe_config;
+
+ /*
+ * Calculate and store various constants which
+ * are later needed by vblank and swap-completion
+ * timestamping. They are derived from true hwmode.
+ */
+ drm_calc_timestamping_constants(crtc,
+ &pipe_config->adjusted_mode);
}
/* Only after disabling all output pipelines that will be changed can we
@@ -9685,23 +9691,10 @@ static int __intel_set_mode(struct drm_crtc *crtc,
for_each_intel_crtc_masked(dev, prepare_pipes, intel_crtc)
dev_priv->display.crtc_enable(&intel_crtc->base);
- if (modeset_pipes) {
- /* Store real post-adjustment hardware mode. */
- crtc->hwmode = pipe_config->adjusted_mode;
-
- /* Calculate and store various constants which
- * are later needed by vblank and swap-completion
- * timestamping. They are derived from true hwmode.
- */
- drm_calc_timestamping_constants(crtc);
- }
-
/* FIXME: add subpixel order */
done:
- if (ret && crtc->enabled) {
- crtc->hwmode = *saved_hwmode;
+ if (ret && crtc->enabled)
crtc->mode = *saved_mode;
- }
out:
kfree(pipe_config);
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 00bca1bd5745..f48bd6dc10cd 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1799,7 +1799,8 @@ bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
if (misc & ATOM_DOUBLE_CLOCK_MODE)
mode->flags |= DRM_MODE_FLAG_DBLSCAN;
- mode->clock = le16_to_cpu(tv_info->aModeTimings[index].usPixelClock) * 10;
+ mode->crtc_clock = mode->clock =
+ le16_to_cpu(tv_info->aModeTimings[index].usPixelClock) * 10;
if (index == 1) {
/* PAL timings appear to have wrong values for totals */
@@ -1842,7 +1843,8 @@ bool radeon_atom_get_tv_timings(struct radeon_device *rdev, int index,
if (misc & ATOM_DOUBLE_CLOCK_MODE)
mode->flags |= DRM_MODE_FLAG_DBLSCAN;
- mode->clock = le16_to_cpu(dtd_timings->usPixClk) * 10;
+ mode->crtc_clock = mode->clock =
+ le16_to_cpu(dtd_timings->usPixClk) * 10;
break;
}
return true;
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 7ea647b84733..d680608f6f5b 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -306,7 +306,7 @@ void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id)
* to complete in this vblank?
*/
if (update_pending &&
- (DRM_SCANOUTPOS_VALID & radeon_get_crtc_scanoutpos(rdev->ddev, crtc_id,
+ (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)))) {
@@ -1610,6 +1610,7 @@ bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
*
* \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
@@ -1631,8 +1632,8 @@ bool radeon_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
* unknown small number of scanlines wrt. real scanout position.
*
*/
-int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, int *vpos, int *hpos,
- ktime_t *stime, ktime_t *etime)
+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;
@@ -1774,5 +1775,27 @@ int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc, int *vpos, int
if (in_vbl)
ret |= DRM_SCANOUTPOS_INVBL;
+ /* 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;
}
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 67fadcf4590f..1235a78fbba1 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -109,6 +109,7 @@ int radeon_gem_object_open(struct drm_gem_object *obj,
void radeon_gem_object_close(struct drm_gem_object *obj,
struct drm_file *file_priv);
extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
+ unsigned int flags,
int *vpos, int *hpos, ktime_t *stime,
ktime_t *etime);
extern const struct drm_ioctl_desc radeon_ioctls_kms[];
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 9e3af24e1b05..114d1672d616 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -719,7 +719,7 @@ int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
/* Helper routine in DRM core does all the work: */
return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
vblank_time, flags,
- drmcrtc);
+ drmcrtc, &drmcrtc->hwmode);
}
#define KMS_INVALID_IOCTL(name) \
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 7c53fb1cc46d..402dbe32c234 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -801,6 +801,7 @@ extern int radeon_crtc_cursor_move(struct drm_crtc *crtc,
int x, int y);
extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
+ unsigned int flags,
int *vpos, int *hpos, ktime_t *stime,
ktime_t *etime);
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 4e7f8922ae62..8e8153e471c2 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -1486,7 +1486,7 @@ static bool radeon_pm_in_vbl(struct radeon_device *rdev)
*/
for (crtc = 0; (crtc < rdev->num_crtc) && in_vbl; crtc++) {
if (rdev->pm.active_crtcs & (1 << crtc)) {
- vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev, crtc, &vpos, &hpos, NULL, NULL);
+ vbl_status = radeon_get_crtc_scanoutpos(rdev->ddev, crtc, 0, &vpos, &hpos, NULL, NULL);
if ((vbl_status & DRM_SCANOUTPOS_VALID) &&
!(vbl_status & DRM_SCANOUTPOS_INVBL))
in_vbl = false;
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 63eab2b72ee7..04086c5be930 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -845,6 +845,7 @@ struct drm_driver {
*
* \param dev DRM device.
* \param crtc Id of the crtc to query.
+ * \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
* \param *vpos Target location for current vertical scanout position.
* \param *hpos Target location for current horizontal scanout position.
* \param *stime Target location for timestamp taken immediately before
@@ -867,6 +868,7 @@ struct drm_driver {
*
*/
int (*get_scanout_position) (struct drm_device *dev, int crtc,
+ unsigned int flags,
int *vpos, int *hpos, ktime_t *stime,
ktime_t *etime);
@@ -1401,8 +1403,10 @@ extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
int crtc, int *max_error,
struct timeval *vblank_time,
unsigned flags,
- struct drm_crtc *refcrtc);
-extern void drm_calc_timestamping_constants(struct drm_crtc *crtc);
+ const struct drm_crtc *refcrtc,
+ const struct drm_display_mode *mode);
+extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
+ const struct drm_display_mode *mode);
extern bool
drm_mode_parse_command_line_for_connector(const char *mode_option,
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index e51e8975dd6f..e963470efd39 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -449,7 +449,7 @@ struct drm_crtc {
uint16_t *gamma_store;
/* Constants needed for precise vblank and swap timestamping. */
- s64 framedur_ns, linedur_ns, pixeldur_ns;
+ int framedur_ns, linedur_ns, pixeldur_ns;
/* if you are using the helper */
void *helper_private;