msm: vidc: Adds support for port reconfiguration.

Adds support for port reconfiguration. This enables decoder to
reconfigure to new resolution or settings other than initially
configured to continue video playback.

Change-Id: Id11e973e4cf1a5c7e4ec5544215fe57cb19466be
Signed-off-by: Praneeth Paladugu <ppaladug@codeaurora.org>
diff --git a/drivers/media/video/msm_vidc/msm_vidc.c b/drivers/media/video/msm_vidc/msm_vidc.c
index b34b99e..5e91644 100644
--- a/drivers/media/video/msm_vidc/msm_vidc.c
+++ b/drivers/media/video/msm_vidc/msm_vidc.c
@@ -29,6 +29,9 @@
 	struct vb2_buffer *out_vb = NULL;
 	struct vb2_buffer *cap_vb = NULL;
 	unsigned long flags;
+	poll_wait(filp, &inst->event_handler.events->wait, wait);
+	if (v4l2_event_pending(&inst->event_handler))
+		return POLLPRI;
 	if (!outq->streaming && !capq->streaming) {
 		pr_err("Returning POLLERR from here: %d, %d\n",
 			outq->streaming, capq->streaming);
@@ -132,6 +135,14 @@
 	return -EINVAL;
 }
 
+int msm_vidc_release_buf(void *instance, struct v4l2_buffer *b)
+{
+	struct msm_vidc_inst *inst = instance;
+	if (inst->session_type == MSM_VIDC_DECODER)
+		return msm_vdec_release_buf(instance, b);
+	return -EINVAL;
+}
+
 int msm_vidc_qbuf(void *instance, struct v4l2_buffer *b)
 {
 	struct msm_vidc_inst *inst = instance;