[media] omap3isp: Use monotonic timestamps for statistics buffers

V4L2 buffers use the monotonic clock, while statistics buffers use wall
time. This makes it difficult to correlate video frames and statistics.
Switch statistics buffers to the monotonic clock to fix this.

Reported-by: Antoine Reversat <a.reversat@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 4 insertions, 3 deletions

diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c
index b8640be692f1..6e24895002a5 100644
--- a/drivers/media/platform/omap3isp/ispstat.c
+++ b/drivers/media/platform/omap3isp/ispstat.c
@@ -256,7 +256,7 @@ static int isp_stat_buf_queue(struct ispstat *stat)
         if (!stat->active_buf)
                 return STAT_NO_BUF;
 
-        do_gettimeofday(&stat->active_buf->ts);
+        ktime_get_ts(&stat->active_buf->ts);
 
         stat->active_buf->buf_size = stat->buf_size;
         if (isp_stat_buf_check_magic(stat, stat->active_buf)) {
@@ -536,7 +536,8 @@ int omap3isp_stat_request_statistics(struct ispstat *stat,
                 return PTR_ERR(buf);
         }
 
-        data->ts = buf->ts;
+        data->ts.tv_sec = buf->ts.tv_sec;
+        data->ts.tv_usec = buf->ts.tv_nsec / NSEC_PER_USEC;
         data->config_counter = buf->config_counter;
         data->frame_number = buf->frame_number;
         data->buf_size = buf->buf_size;
diff --git a/drivers/media/platform/omap3isp/ispstat.h b/drivers/media/platform/omap3isp/ispstat.h
index 9b7c8654dc8a..8221d0c05b6b 100644
--- a/drivers/media/platform/omap3isp/ispstat.h
+++ b/drivers/media/platform/omap3isp/ispstat.h
@@ -50,7 +50,7 @@ struct ispstat_buffer {
         struct iovm_struct *iovm;
         void *virt_addr;
         dma_addr_t dma_addr;
-        struct timeval ts;
+        struct timespec ts;
         u32 buf_size;
         u32 frame_number;
         u16 config_counter;