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ANDROID: media: v4l2-core: extend the v4l2 format to support request

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This patch is to extend the related interface to support the request-based operations. We use extension fields in the parameters of MEDIA_IOC_SETUP_LINK, VIDIOC_S_FMT, VIDIOC_SUBDEV_S_SELECTION, VIDIOC_SUBDEV_S_FMT as request fd.
The driver uses media_request_get_by_fd() to retrieve the media request and save the pending change in it, so that we can apply the pending change in req_queue() callback then.
Besides, We also add three vendor hook functions to handle related changes in v4l2-framework.

Bug: 187480619

Signed-off-by: Louis Kuo <louis.kuo@mediatek.com>
Change-Id: I22762136f980afaec29be70c32cca8b04e0805a0
This commit is contained in:
Louis Kuo
2021-05-07 17:14:02 +08:00
committed by Todd Kjos
parent bf769b7216
commit f1a161b019
6 changed files with 86 additions and 6 deletions
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6
drivers/android/vendor_hooks.c
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@@ -57,6 +57,8 @@
#include <trace/hooks/selinux.h>
#include <trace/hooks/hung_task.h>
#include <trace/hooks/mmc_core.h>
#include <trace/hooks/v4l2core.h>
#include <trace/hooks/v4l2mc.h>
/*
* Export tracepoints that act as a bare tracehook (ie: have no trace event
@@ -302,3 +304,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_save_track_hash);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_set_task_comm);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpufreq_acct_update_power);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_typec_tcpm_log);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_media_device_setup_link);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_clear_reserved_fmt_fields);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_fill_ext_fmtdesc);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_clear_mask_adjust);