Can be set for debugging, valgrind, board bringup etc.
Also - we fail reading the sysfs vsync, we fall back and fake it.
Bug: 7301591
Change-Id: I9509fd7aa8862d5af7d521e29fe32bef9654168c
Signed-off-by: Iliyan Malchev <malchev@google.com>
Conflicts:
libhwcomposer/hwc_vsync.cpp
Read can return fail when the panel is off.
When read fails do not exit from the vsync thread,
continue with the vsync signal, as later there will
be correct vsync event from the driver
Change-Id: I0f145b93fe5d365eafb6b9e7661160f00f84db40
Acked-by: Arun Kumar K.R<akumarkr@codeaurora.org>
(cherry picked from commit ef93ede83eba15252a5e902981c491bf8ed228cc)
Earlier, the sysfs node was created in the driver for the
first time in dsi_video_on. This has now been moved to probe
so this node can be opened to the start of the thread.
Bug: 7305728
Change-Id: I01230e4fdc2bddd160ce0d84e153f1f8c179b8df
Signed-off-by: Iliyan Malchev <malchev@google.com>
We are seeing errors where a device's hwcVsyncThread is not present for some
reason. The surface flinger has not crashed, so either the thread never got
created, or it exited withouth throwing an error. This patch adds some more
verbose on-error logging to the HWC as an attempt to verify the theory that the
thread does not get created, or fails in pthread_create. While we're at it, we
add the same logging at pthread_create() for hwcUeventThread, as well.
Also, replace the lseek()+read() with a pread() combo in the vsync thread.
Change-Id: I555d786a7d66ff4ef1dbfd95947a7d9341e56f11
related-to-bug: 7305728
Signed-off-by: Iliyan Malchev <malchev@google.com>
-- numHwLayers==1 means that there is only the FB_TARGET which HWC shouldn't
draw. Also check for blank in set. Checking for this in prepare prevents us
from acquiring pipes.
-- add null check for private handle
-- print out vsync timestamp data on error
bug: 7274417
related-to-bug: 7288769
Change-Id: I8dae0d0748c5226fdc33ed8f5cc5259835dec2de
Signed-off-by: Iliyan Malchev <malchev@google.com>
Fix some race conditions between hwc_eventControl and the hwcVsyncThread.
Bug: 7274951
Change-Id: Ic71d65918303b4cef6a379ff5397702b2b578373
Signed-off-by: Iliyan Malchev <malchev@google.com>
* Read sysfs entries to get vsync timestamp from kernel.
* External display continues to use uevents for hotplug events
* A new thread, vsyncThread is created to read and send vsync
timestamps to HAL.
* Disable H/W VSYNC for MDP 5.x targets until kernel changes are
complete.
* Synchronization is needed to make sure read() is not called
by hwcVsyncThread when VSYNC is disabled.
Change-Id: Iab0a94a3cfce9142b8867859f2a7d9bcaecb0996
Acked-by: Neti Ravi Kumar <ravineti@codeaurora.org>
