OpenWrt – Rev 1
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From fab723d6ce6dd2052b4febd65ae62425288d79d3 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Mon, 27 Nov 2017 14:19:56 +0100
Subject: [PATCH 389/454] staging: bcm2835-camera use ktime_t for timestamps
commit 6cf83f2a9e81c500819938fad3555081471212c6 upstream with
minor mods
struct timeval is deprecated for in-kernel use, and converting
this function to use ktime_t makes it simpler as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
.../bcm2835-camera/bcm2835-camera.c | 37 +++++--------------
.../bcm2835-camera/bcm2835-camera.h | 2 +-
2 files changed, 10 insertions(+), 29 deletions(-)
--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
+++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c
@@ -374,37 +374,18 @@ static void buffer_cb(struct vchiq_mmal_
buf->vb.vb2_buf.timestamp);
} else if(pts != 0) {
- struct timeval timestamp;
+ ktime_t timestamp;
s64 runtime_us = pts -
dev->capture.vc_start_timestamp;
- u32 div = 0;
- u32 rem = 0;
-
- div =
- div_u64_rem(runtime_us, USEC_PER_SEC, &rem);
- timestamp.tv_sec =
- dev->capture.kernel_start_ts.tv_sec + div;
- timestamp.tv_usec =
- dev->capture.kernel_start_ts.tv_usec + rem;
-
- if (timestamp.tv_usec >=
- USEC_PER_SEC) {
- timestamp.tv_sec++;
- timestamp.tv_usec -=
- USEC_PER_SEC;
- }
+ timestamp = ktime_add_us(dev->capture.kernel_start_ts,
+ runtime_us);
v4l2_dbg(1, bcm2835_v4l2_debug, &dev->v4l2_dev,
- "Convert start time %d.%06d and %llu "
- "with offset %llu to %d.%06d\n",
- (int)dev->capture.kernel_start_ts.
- tv_sec,
- (int)dev->capture.kernel_start_ts.
- tv_usec,
+ "Convert start time %llu and %llu "
+ "with offset %llu to %llu\n",
+ ktime_to_ns(dev->capture.kernel_start_ts),
dev->capture.vc_start_timestamp, pts,
- (int)timestamp.tv_sec,
- (int)timestamp.tv_usec);
- buf->vb.vb2_buf.timestamp = timestamp.tv_sec * 1000000000ULL +
- timestamp.tv_usec * 1000ULL;
+ ktime_to_ns(timestamp));
+ buf->vb.vb2_buf.timestamp = ktime_to_ns(timestamp);
} else {
if (dev->capture.last_timestamp) {
buf->vb.vb2_buf.timestamp = dev->capture.last_timestamp;
@@ -596,7 +577,7 @@ static int start_streaming(struct vb2_qu
dev->capture.last_timestamp = 0;
- v4l2_get_timestamp(&dev->capture.kernel_start_ts);
+ dev->capture.kernel_start_ts = ktime_get();
/* enable the camera port */
dev->capture.port->cb_ctx = dev;
--- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
+++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.h
@@ -92,7 +92,7 @@ struct bm2835_mmal_dev {
/* VC start timestamp for streaming */
s64 vc_start_timestamp;
/* Kernel start timestamp for streaming */
- struct timeval kernel_start_ts;
+ ktime_t kernel_start_ts;
/* Timestamp of last frame */
u64 last_timestamp;