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Commit 0bd0bd66 authored by Mahadevan's avatar Mahadevan Committed by Gerrit - the friendly Code Review server
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disp: msm: sde: add sysfs entry to alert retire frame event 



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

Change-Id: Ie404fd155ff01ea954d0decbe8788c62d033a6fc
Signed-off-by: default avatarMahadevan <mahap@codeaurora.org>
parent 213d0449

msm/sde/sde_crtc.c

+34 −0
Original line number Diff line number Diff line
@@ -379,14 +379,34 @@ static ssize_t vsync_event_show(struct device *device, 
			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);

	SDE_EVT32(DRMID(&sde_crtc->base));

	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(measured_fps);

static DEVICE_ATTR_RW(fps_periodicity_ms);

static DEVICE_ATTR_RO(retire_frame_event);



static struct attribute *sde_crtc_dev_attrs[] = {

	&dev_attr_vsync_event.attr,

	&dev_attr_measured_fps.attr,

	&dev_attr_fps_periodicity_ms.attr,

	&dev_attr_retire_frame_event.attr,

	NULL

};
@@ -410,6 +430,8 @@ static void sde_crtc_destroy(struct drm_crtc *crtc) 


	if (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)

		device_unregister(sde_crtc->sysfs_dev);
@@ -2159,6 +2181,12 @@ 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->crtc = crtc;

	fevent->connector = cb_data->connector;
@@ -6258,6 +6286,12 @@ int sde_crtc_post_init(struct drm_device *dev, struct drm_crtc *crtc) 
		SDE_ERROR("crtc:%d vsync_event sysfs create failed\n",

						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:

	return rc;

}

msm/sde/sde_crtc.h

+4 −0
Original line number Diff line number Diff line
@@ -221,11 +221,13 @@ struct sde_crtc_misr_info { 
 * @debugfs_root  : Parent of debugfs node

 * @priv_handle   : Pointer to external private handle, if present

 * @vblank_cb_count : count of vblank callback since last reset

 * @retire_frame_event_time  : ktime at last retire frame event

 * @play_count    : frame count between crtc enable and disable

 * @vblank_cb_time  : ktime at vblank count reset

 * @vblank_last_cb_time  : ktime at last vblank notification

 * @sysfs_dev  : sysfs device node for crtc

 * @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

 *                  commit-thread, not state-swap time which is earlier, so

 *                  safe to make decisions on during VBLANK on/off work
@@ -295,10 +297,12 @@ struct sde_crtc { 
	u32 vblank_cb_count;

	u64 play_count;

	ktime_t vblank_cb_time;

	ktime_t retire_frame_event_time;

	ktime_t vblank_last_cb_time;

	struct sde_crtc_fps_info fps_info;

	struct device *sysfs_dev;

	struct kernfs_node *vsync_event_sf;

	struct kernfs_node *retire_frame_event_sf;

	bool enabled;



	bool ds_reconfig;