msm: ais: translate wall clock time to userspace

Translate wall clock time in camera kernel buffers
to camera userspace application.

Change-Id: I5ad66766e9557dfe7897940b66decf7cc699787f
Signed-off-by: Dilip Gudlur <dgudlur@codeaurora.org>

diff --git a/drivers/media/platform/msm/ais/isp/msm_isp_axi_util.c b/drivers/media/platform/msm/ais/isp/msm_isp_axi_util.c
index 77f2ab5..bfccb06 100644 (file)
--- a/drivers/media/platform/msm/ais/isp/msm_isp_axi_util.c
+++ b/drivers/media/platform/msm/ais/isp/msm_isp_axi_util.c
@@ -1956,7 +1956,8 @@ static void msm_isp_handle_done_buf_frame_id_mismatch(
 
 static int msm_isp_process_done_buf(struct vfe_device *vfe_dev,
        struct msm_vfe_axi_stream *stream_info, struct msm_isp_buffer *buf,
-       struct timeval *time_stamp, uint32_t frame_id)
+       struct timeval *time_stamp, struct timeval *time_stamp_system,
+       uint32_t frame_id)
 {
        int rc;
        unsigned long flags;
@@ -2037,7 +2038,13 @@ static int msm_isp_process_done_buf(struct vfe_device *vfe_dev,
        }
 
        buf_event.frame_id = frame_id;
+       /* timestamp stores monotonic time */
        buf_event.timestamp = *time_stamp;
+       /* for buf_event, mono_timestamp is unused attribute
+        * reuse this to store system time and propagate to
+        * userspace
+        */
+       buf_event.mono_timestamp = *time_stamp_system;
        buf_event.u.buf_done.session_id = stream_info->session_id;
        buf_event.u.buf_done.stream_id = stream_info->stream_id;
        buf_event.u.buf_done.handle = buf->bufq_handle;
@@ -3934,6 +3941,7 @@ void msm_isp_process_axi_irq_stream(struct vfe_device *vfe_dev,
        struct msm_isp_buffer *done_buf = NULL;
        unsigned long flags;
        struct timeval *time_stamp;
+       struct timeval *time_stamp_system;
        uint32_t frame_id, buf_index = -1;
        struct msm_vfe_axi_stream *temp_stream;
 
@@ -3947,6 +3955,8 @@ void msm_isp_process_axi_irq_stream(struct vfe_device *vfe_dev,
                time_stamp = &ts->vt_time;
        } else {
                time_stamp = &ts->buf_time;
+               /* store system time */
+               time_stamp_system = &ts->event_time;
        }
 
        frame_id = vfe_dev->axi_data.
@@ -4089,7 +4099,7 @@ void msm_isp_process_axi_irq_stream(struct vfe_device *vfe_dev,
        }
 
        msm_isp_process_done_buf(vfe_dev, stream_info,
-                       done_buf, time_stamp, frame_id);
+                       done_buf, time_stamp, time_stamp_system, frame_id);
 }
 
 void msm_isp_process_axi_irq(struct vfe_device *vfe_dev,