[Intel-gfx] [PATCH 2/5] drm/vblank: Switch to bool in_vblank_irq in get_vblank_timestamp
Daniel Vetter
daniel.vetter at ffwll.ch
Wed May 3 07:26:35 UTC 2017
It's overkill to have a flag parameter which is essentially used just
as a boolean. This takes care of core + adjusting drivers.
Adjusting the scanout position callback is a bit harder, since radeon
also supplies it's own driver-private flags in there.
v2: Fixup misplaced hunks (Neil).
Cc: Mario Kleiner <mario.kleiner at tuebingen.mpg.de>
Cc: Eric Anholt <eric at anholt.net>
Cc: Rob Clark <robdclark at gmail.com>
Cc: linux-arm-msm at vger.kernel.org
Cc: freedreno at lists.freedesktop.org
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: Christian König <christian.koenig at amd.com>
Cc: Ben Skeggs <bskeggs at redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Neil Armstrong <narmstrong at baylibre.com>
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 6 ++---
drivers/gpu/drm/drm_irq.c | 41 +++++++++++++++++--------------
drivers/gpu/drm/i915/i915_irq.c | 4 +--
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 4 +--
drivers/gpu/drm/nouveau/nouveau_display.c | 5 ++--
drivers/gpu/drm/nouveau/nouveau_display.h | 2 +-
drivers/gpu/drm/radeon/radeon_drv.c | 2 +-
drivers/gpu/drm/radeon/radeon_kms.c | 4 +--
drivers/gpu/drm/vc4/vc4_crtc.c | 6 ++---
drivers/gpu/drm/vc4/vc4_drv.h | 2 +-
include/drm/drm_drv.h | 17 +++++++------
include/drm/drm_irq.h | 2 +-
13 files changed, 51 insertions(+), 46 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 7b4f808afff9..0ce8292d97c0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1913,7 +1913,7 @@ void amdgpu_disable_vblank_kms(struct drm_device *dev, unsigned int pipe);
bool amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
int *max_error,
struct timeval *vblank_time,
- unsigned flags);
+ bool in_vblank_irq);
long amdgpu_kms_compat_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index a1b97809305e..babd969a63d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -941,7 +941,7 @@ void amdgpu_disable_vblank_kms(struct drm_device *dev, unsigned int pipe)
* @crtc: crtc to get the timestamp for
* @max_error: max error
* @vblank_time: time value
- * @flags: flags passed to the driver
+ * @in_vblank_irq: called from drm_handle_vblank()
*
* Gets the timestamp on the requested crtc based on the
* scanout position. (all asics).
@@ -950,7 +950,7 @@ void amdgpu_disable_vblank_kms(struct drm_device *dev, unsigned int pipe)
bool amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
int *max_error,
struct timeval *vblank_time,
- unsigned flags)
+ bool in_vblank_irq)
{
struct drm_crtc *crtc;
struct amdgpu_device *adev = dev->dev_private;
@@ -971,7 +971,7 @@ bool amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
/* Helper routine in DRM core does all the work: */
return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error,
- vblank_time, flags,
+ vblank_time, in_vblank_irq,
&crtc->hwmode);
}
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 677b37b0372b..fba6a842f4cd 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -54,7 +54,7 @@
static bool
drm_get_last_vbltimestamp(struct drm_device *dev, unsigned int pipe,
- struct timeval *tvblank, unsigned flags);
+ struct timeval *tvblank, bool in_vblank_irq);
static unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
@@ -138,7 +138,7 @@ static void drm_reset_vblank_timestamp(struct drm_device *dev, unsigned int pipe
*/
do {
cur_vblank = __get_vblank_counter(dev, pipe);
- rc = drm_get_last_vbltimestamp(dev, pipe, &t_vblank, 0);
+ rc = drm_get_last_vbltimestamp(dev, pipe, &t_vblank, false);
} while (cur_vblank != __get_vblank_counter(dev, pipe) && --count > 0);
/*
@@ -171,7 +171,7 @@ static void drm_reset_vblank_timestamp(struct drm_device *dev, unsigned int pipe
* device vblank fields.
*/
static void drm_update_vblank_count(struct drm_device *dev, unsigned int pipe,
- unsigned long flags)
+ bool in_vblank_irq)
{
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
u32 cur_vblank, diff;
@@ -194,7 +194,7 @@ static void drm_update_vblank_count(struct drm_device *dev, unsigned int pipe,
*/
do {
cur_vblank = __get_vblank_counter(dev, pipe);
- rc = drm_get_last_vbltimestamp(dev, pipe, &t_vblank, flags);
+ rc = drm_get_last_vbltimestamp(dev, pipe, &t_vblank, in_vblank_irq);
} while (cur_vblank != __get_vblank_counter(dev, pipe) && --count > 0);
if (dev->max_vblank_count != 0) {
@@ -214,13 +214,13 @@ static void drm_update_vblank_count(struct drm_device *dev, unsigned int pipe,
*/
diff = DIV_ROUND_CLOSEST_ULL(diff_ns, framedur_ns);
- if (diff == 0 && flags & DRM_CALLED_FROM_VBLIRQ)
+ if (diff == 0 && in_vblank_irq)
DRM_DEBUG_VBL("crtc %u: Redundant vblirq ignored."
" diff_ns = %lld, framedur_ns = %d)\n",
pipe, (long long) diff_ns, framedur_ns);
} else {
/* some kind of default for drivers w/o accurate vbl timestamping */
- diff = (flags & DRM_CALLED_FROM_VBLIRQ) != 0;
+ diff = in_vblank_irq ? 1 : 0;
}
/*
@@ -253,7 +253,7 @@ static void drm_update_vblank_count(struct drm_device *dev, unsigned int pipe,
* Otherwise reinitialize delayed at next vblank interrupt and assign 0
* for now, to mark the vblanktimestamp as invalid.
*/
- if (!rc && (flags & DRM_CALLED_FROM_VBLIRQ) == 0)
+ if (!rc && in_vblank_irq)
t_vblank = (struct timeval) {0, 0};
store_vblank(dev, pipe, diff, &t_vblank, cur_vblank);
@@ -291,7 +291,7 @@ u32 drm_accurate_vblank_count(struct drm_crtc *crtc)
spin_lock_irqsave(&dev->vblank_time_lock, flags);
- drm_update_vblank_count(dev, pipe, 0);
+ drm_update_vblank_count(dev, pipe, false);
vblank = drm_vblank_count(dev, pipe);
spin_unlock_irqrestore(&dev->vblank_time_lock, flags);
@@ -349,7 +349,7 @@ static void vblank_disable_and_save(struct drm_device *dev, unsigned int pipe)
* this time. This makes the count account for the entire time
* between drm_crtc_vblank_on() and drm_crtc_vblank_off().
*/
- drm_update_vblank_count(dev, pipe, 0);
+ drm_update_vblank_count(dev, pipe, false);
spin_unlock_irqrestore(&dev->vblank_time_lock, irqflags);
}
@@ -700,9 +700,10 @@ EXPORT_SYMBOL(drm_calc_timestamping_constants);
* @max_error: Desired maximum allowable error in timestamps (nanosecs)
* On return contains true maximum error of timestamp
* @vblank_time: Pointer to struct timeval which should receive the timestamp
- * @flags: Flags to pass to driver:
- * 0 = Default,
- * DRM_CALLED_FROM_VBLIRQ = If function is called from vbl IRQ handler
+ * @in_vblank_irq:
+ * True when called from drm_crtc_handle_vblank(). Some drivers
+ * need to apply some workarounds for gpu-specific vblank irq quirks
+ * if flag is set.
* @mode: mode which defines the scanout timings
*
* Implements calculation of exact vblank timestamps from given drm_display_mode
@@ -732,7 +733,7 @@ bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
unsigned int pipe,
int *max_error,
struct timeval *vblank_time,
- unsigned flags,
+ bool in_vblank_irq,
const struct drm_display_mode *mode)
{
struct timeval tv_etime;
@@ -740,6 +741,7 @@ bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
unsigned int vbl_status;
int vpos, hpos, i;
int delta_ns, duration_ns;
+ unsigned flags = in_vblank_irq ? DRM_CALLED_FROM_VBLIRQ : 0;
if (pipe >= dev->num_crtcs) {
DRM_ERROR("Invalid crtc %u\n", pipe);
@@ -843,9 +845,10 @@ static struct timeval get_drm_timestamp(void)
* @dev: DRM device
* @pipe: index of CRTC whose vblank timestamp to retrieve
* @tvblank: Pointer to target struct timeval which should receive the timestamp
- * @flags: Flags to pass to driver:
- * 0 = Default,
- * DRM_CALLED_FROM_VBLIRQ = If function is called from vbl IRQ handler
+ * @in_vblank_irq:
+ * True when called from drm_crtc_handle_vblank(). Some drivers
+ * need to apply some workarounds for gpu-specific vblank irq quirks
+ * if flag is set.
*
* Fetches the system timestamp corresponding to the time of the most recent
* vblank interval on specified CRTC. May call into kms-driver to
@@ -859,7 +862,7 @@ static struct timeval get_drm_timestamp(void)
*/
static bool
drm_get_last_vbltimestamp(struct drm_device *dev, unsigned int pipe,
- struct timeval *tvblank, unsigned flags)
+ struct timeval *tvblank, bool in_vblank_irq)
{
bool ret = false;
@@ -869,7 +872,7 @@ drm_get_last_vbltimestamp(struct drm_device *dev, unsigned int pipe,
/* Query driver if possible and precision timestamping enabled. */
if (dev->driver->get_vblank_timestamp && (max_error > 0))
ret = dev->driver->get_vblank_timestamp(dev, pipe, &max_error,
- tvblank, flags);
+ tvblank, in_vblank_irq);
/* GPU high precision timestamp query unsupported or failed.
* Return current monotonic/gettimeofday timestamp as best estimate.
@@ -1747,7 +1750,7 @@ bool drm_handle_vblank(struct drm_device *dev, unsigned int pipe)
return false;
}
- drm_update_vblank_count(dev, pipe, DRM_CALLED_FROM_VBLIRQ);
+ drm_update_vblank_count(dev, pipe, true);
spin_unlock(&dev->vblank_time_lock);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 126e6d903c9b..b0e38cc85c98 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -967,7 +967,7 @@ int intel_get_crtc_scanline(struct intel_crtc *crtc)
static bool i915_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
int *max_error,
struct timeval *vblank_time,
- unsigned flags)
+ bool in_vblank_irq)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *crtc;
@@ -991,7 +991,7 @@ static bool i915_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
/* Helper routine in DRM core does all the work: */
return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error,
- vblank_time, flags,
+ vblank_time, in_vblank_irq,
&crtc->base.hwmode);
}
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index ffeb34bee3af..07e2b1335f65 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
@@ -595,7 +595,7 @@ static int mdp5_get_scanoutpos(struct drm_device *dev, unsigned int pipe,
static bool mdp5_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
int *max_error,
struct timeval *vblank_time,
- unsigned flags)
+ bool in_vblank_irq)
{
struct msm_drm_private *priv = dev->dev_private;
struct drm_crtc *crtc;
@@ -612,7 +612,7 @@ static bool mdp5_get_vblank_timestamp(struct drm_device *dev, unsigned int pipe,
}
return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error,
- vblank_time, flags,
+ vblank_time, in_vblank_irq,
&crtc->mode);
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index f1e36f70755d..2d28ef57f2bf 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -158,7 +158,7 @@ nouveau_display_scanoutpos(struct drm_device *dev, unsigned int pipe,
bool
nouveau_display_vblstamp(struct drm_device *dev, unsigned int pipe,
- int *max_error, struct timeval *time, unsigned flags)
+ int *max_error, struct timeval *time, bool in_vblank_irq)
{
struct drm_crtc *crtc;
@@ -170,7 +170,8 @@ nouveau_display_vblstamp(struct drm_device *dev, unsigned int pipe,
else
mode = &crtc->hwmode;
return drm_calc_vbltimestamp_from_scanoutpos(dev,
- pipe, max_error, time, flags, mode);
+ pipe, max_error, time, in_vblank_irq,
+ mode);
}
}
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.h b/drivers/gpu/drm/nouveau/nouveau_display.h
index c6bfe533a641..8ec86259c5ac 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.h
+++ b/drivers/gpu/drm/nouveau/nouveau_display.h
@@ -72,7 +72,7 @@ int nouveau_display_scanoutpos(struct drm_device *, unsigned int,
unsigned int, int *, int *, ktime_t *,
ktime_t *, const struct drm_display_mode *);
bool nouveau_display_vblstamp(struct drm_device *, unsigned int, int *,
- struct timeval *, unsigned);
+ struct timeval *, bool);
int nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index caa0b1cc4269..88fc791ec8fb 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -118,7 +118,7 @@ void radeon_disable_vblank_kms(struct drm_device *dev, unsigned int pipe);
bool radeon_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
int *max_error,
struct timeval *vblank_time,
- unsigned flags);
+ bool in_vblank_irq);
void radeon_driver_irq_preinstall_kms(struct drm_device *dev);
int radeon_driver_irq_postinstall_kms(struct drm_device *dev);
void radeon_driver_irq_uninstall_kms(struct drm_device *dev);
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 535969d74f64..5bccdeae0773 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -874,7 +874,7 @@ void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
bool radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
int *max_error,
struct timeval *vblank_time,
- unsigned flags)
+ bool in_vblank_irq)
{
struct drm_crtc *drmcrtc;
struct radeon_device *rdev = dev->dev_private;
@@ -891,7 +891,7 @@ bool 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,
+ vblank_time, in_vblank_irq,
&drmcrtc->hwmode);
}
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index f506525a1066..310c155e1be0 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -232,7 +232,7 @@ int vc4_crtc_get_scanoutpos(struct drm_device *dev, unsigned int crtc_id,
ret |= DRM_SCANOUTPOS_IN_VBLANK;
vblank_lines = mode->vtotal - mode->vdisplay;
- if (flags & DRM_CALLED_FROM_VBLIRQ) {
+ if (in_vblank_irq) {
/*
* Assume the irq handler got called close to first
* line of vblank, so PV has about a full vblank
@@ -272,14 +272,14 @@ int vc4_crtc_get_scanoutpos(struct drm_device *dev, unsigned int crtc_id,
bool vc4_crtc_get_vblank_timestamp(struct drm_device *dev, unsigned int crtc_id,
int *max_error, struct timeval *vblank_time,
- unsigned flags)
+ bool in_vblank_irq)
{
struct drm_crtc *crtc = drm_crtc_from_index(dev, crtc_id);
struct drm_crtc_state *state = crtc->state;
/* Helper routine in DRM core does all the work: */
return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc_id, max_error,
- vblank_time, flags,
+ vblank_time, in_vblank_irq,
&state->adjusted_mode);
}
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
index 71957936b2f5..9c86370df0c7 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.h
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
@@ -494,7 +494,7 @@ int vc4_crtc_get_scanoutpos(struct drm_device *dev, unsigned int crtc_id,
const struct drm_display_mode *mode);
bool vc4_crtc_get_vblank_timestamp(struct drm_device *dev, unsigned int crtc_id,
int *max_error, struct timeval *vblank_time,
- unsigned flags);
+ bool in_vblank_irq);
/* vc4_debugfs.c */
int vc4_debugfs_init(struct drm_minor *minor);
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index da78e248d9d8..a97dbc1eeccd 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -241,8 +241,10 @@ struct drm_driver {
* DRM device.
* pipe:
* Id of the crtc to query.
- * flags:
- * Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
+ * in_vblank_irq:
+ * True when called from drm_crtc_handle_vblank(). Some drivers
+ * need to apply some workarounds for gpu-specific vblank irq quirks
+ * if flag is set.
* vpos:
* Target location for current vertical scanout position.
* hpos:
@@ -308,11 +310,10 @@ struct drm_driver {
* Returns true upper bound on error for timestamp.
* vblank_time:
* Target location for returned vblank timestamp.
- * flags:
- * 0 = Defaults, no special treatment needed.
- * DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
- * irq handler. Some drivers need to apply some workarounds
- * for gpu-specific vblank irq quirks if flag is set.
+ * in_vblank_irq:
+ * True when called from drm_crtc_handle_vblank(). Some drivers
+ * need to apply some workarounds for gpu-specific vblank irq quirks
+ * if flag is set.
*
* Returns:
*
@@ -322,7 +323,7 @@ struct drm_driver {
bool (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
int *max_error,
struct timeval *vblank_time,
- unsigned flags);
+ bool in_vblank_irq);
/* these have to be filled in */
diff --git a/include/drm/drm_irq.h b/include/drm/drm_irq.h
index f0d5ccf9b282..445406efb8dc 100644
--- a/include/drm/drm_irq.h
+++ b/include/drm/drm_irq.h
@@ -156,7 +156,7 @@ u32 drm_accurate_vblank_count(struct drm_crtc *crtc);
bool drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
unsigned int pipe, int *max_error,
struct timeval *vblank_time,
- unsigned flags,
+ bool in_vblank_irq,
const struct drm_display_mode *mode);
void drm_calc_timestamping_constants(struct drm_crtc *crtc,
const struct drm_display_mode *mode);
--
2.11.0
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