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disp: msm: add support to notify retire frame event

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Added sysfs entry on crtc to notify a retire frame event
which indicates start of new frame. It is added at same
time of signaling retire fence.

Change-Id: Ie60aae96bd6e6bfb3cfe9db482cb59053f22383f
Signed-off-by: Raviteja Tamatam <travitej@codeaurora.org>
This commit is contained in:
Raviteja Tamatam
2020-09-07 04:22:00 +05:30
parent c75b0eb0a0
commit e3f6420cee
2 changed files with 36 additions and 0 deletions
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32
msm/sde/sde_crtc.c
View File

@@ -380,14 +380,33 @@ static ssize_t vsync_event_show(struct device *device,
ktime_to_ns(sde_crtc->vblank_last_cb_time)); ktime_to_ns(sde_crtc->vblank_last_cb_time));
} }
static ssize_t retire_frame_event_show(struct device *device,
struct device_attribute *attr, char *buf)
{
struct drm_crtc *crtc;
struct sde_crtc *sde_crtc;
if (!device || !buf) {
SDE_ERROR("invalid input param(s)\n");
return -EAGAIN;
}
crtc = dev_get_drvdata(device);
sde_crtc = to_sde_crtc(crtc);
return scnprintf(buf, PAGE_SIZE, "RETIRE_FRAME_TIME=%llu\n",
ktime_to_ns(sde_crtc->retire_frame_event_time));
}
static DEVICE_ATTR_RO(vsync_event); static DEVICE_ATTR_RO(vsync_event);
static DEVICE_ATTR_RO(measured_fps); static DEVICE_ATTR_RO(measured_fps);
static DEVICE_ATTR_RW(fps_periodicity_ms); static DEVICE_ATTR_RW(fps_periodicity_ms);
static DEVICE_ATTR_RO(retire_frame_event);
static struct attribute *sde_crtc_dev_attrs[] = { static struct attribute *sde_crtc_dev_attrs[] = {
&dev_attr_vsync_event.attr, &dev_attr_vsync_event.attr,
&dev_attr_measured_fps.attr, &dev_attr_measured_fps.attr,
&dev_attr_fps_periodicity_ms.attr, &dev_attr_fps_periodicity_ms.attr,
&dev_attr_retire_frame_event.attr,
NULL NULL
}; };
@@ -411,6 +430,8 @@ static void sde_crtc_destroy(struct drm_crtc *crtc)
if (sde_crtc->vsync_event_sf) if (sde_crtc->vsync_event_sf)
sysfs_put(sde_crtc->vsync_event_sf); sysfs_put(sde_crtc->vsync_event_sf);
if (sde_crtc->retire_frame_event_sf)
sysfs_put(sde_crtc->retire_frame_event_sf);
if (sde_crtc->sysfs_dev) if (sde_crtc->sysfs_dev)
device_unregister(sde_crtc->sysfs_dev); device_unregister(sde_crtc->sysfs_dev);
@@ -2223,6 +2244,12 @@ static void sde_crtc_frame_event_cb(void *data, u32 event)
} }
} }
if ((event & SDE_ENCODER_FRAME_EVENT_SIGNAL_RETIRE_FENCE) &&
(sde_crtc && sde_crtc->retire_frame_event_sf)) {
sde_crtc->retire_frame_event_time = ktime_get();
sysfs_notify_dirent(sde_crtc->retire_frame_event_sf);
}
fevent->event = event; fevent->event = event;
fevent->crtc = crtc; fevent->crtc = crtc;
fevent->connector = cb_data->connector; fevent->connector = cb_data->connector;
@@ -6557,6 +6584,11 @@ int sde_crtc_post_init(struct drm_device *dev, struct drm_crtc *crtc)
SDE_ERROR("crtc:%d vsync_event sysfs create failed\n", SDE_ERROR("crtc:%d vsync_event sysfs create failed\n",
crtc->base.id); crtc->base.id);
sde_crtc->retire_frame_event_sf = sysfs_get_dirent(
sde_crtc->sysfs_dev->kobj.sd, "retire_frame_event");
if (!sde_crtc->retire_frame_event_sf)
SDE_ERROR("crtc:%d retire frame event sysfs create failed\n",
crtc->base.id);
end: end:
return rc; return rc;
} }

4
msm/sde/sde_crtc.h
View File

@@ -243,8 +243,10 @@ struct sde_crtc_misr_info {
* @play_count : frame count between crtc enable and disable * @play_count : frame count between crtc enable and disable
* @vblank_cb_time : ktime at vblank count reset * @vblank_cb_time : ktime at vblank count reset
* @vblank_last_cb_time : ktime at last vblank notification * @vblank_last_cb_time : ktime at last vblank notification
* @retire_frame_event_time : ktime at last retire frame event
* @sysfs_dev : sysfs device node for crtc * @sysfs_dev : sysfs device node for crtc
* @vsync_event_sf : vsync event notifier sysfs device * @vsync_event_sf : vsync event notifier sysfs device
* @retire_frame_event_sf :retire frame event notifier sysfs device
* @enabled : whether the SDE CRTC is currently enabled. updated in the * @enabled : whether the SDE CRTC is currently enabled. updated in the
* commit-thread, not state-swap time which is earlier, so * commit-thread, not state-swap time which is earlier, so
* safe to make decisions on during VBLANK on/off work * safe to make decisions on during VBLANK on/off work
@@ -315,9 +317,11 @@ struct sde_crtc {
u64 play_count; u64 play_count;
ktime_t vblank_cb_time; ktime_t vblank_cb_time;
ktime_t vblank_last_cb_time; ktime_t vblank_last_cb_time;
ktime_t retire_frame_event_time;
struct sde_crtc_fps_info fps_info; struct sde_crtc_fps_info fps_info;
struct device *sysfs_dev; struct device *sysfs_dev;
struct kernfs_node *vsync_event_sf; struct kernfs_node *vsync_event_sf;
struct kernfs_node *retire_frame_event_sf;
bool enabled; bool enabled;
struct list_head feature_list; struct list_head feature_list;