From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Fri, 28 Aug 2015 11:48:29 +0000 (-0300)
Subject: [media] saa7164: add support for control events
X-Git-Tag: firefly_0821_release~176^2~795^2~103
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=245b5ae95f6c58a49f5a7230041f9fbfbaabfc99;p=firefly-linux-kernel-4.4.55.git

[media] saa7164: add support for control events

Now that saa7164 uses v4l2_fh and that poll() has been fixed, it is
trivial to add support for control events.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---

diff --git a/drivers/media/pci/saa7164/saa7164-encoder.c b/drivers/media/pci/saa7164/saa7164-encoder.c
index fd32fa0c8cb7..3bd76c4663a9 100644
--- a/drivers/media/pci/saa7164/saa7164-encoder.c
+++ b/drivers/media/pci/saa7164/saa7164-encoder.c
@@ -919,7 +919,7 @@ static unsigned int fops_poll(struct file *file, poll_table *wait)
 	struct saa7164_encoder_fh *fh =
 		(struct saa7164_encoder_fh *)file->private_data;
 	struct saa7164_port *port = fh->port;
-	unsigned int mask = 0;
+	unsigned int mask = v4l2_ctrl_poll(file, wait);
 
 	port->last_poll_msecs_diff = port->last_poll_msecs;
 	port->last_poll_msecs = jiffies_to_msecs(jiffies);
@@ -935,7 +935,7 @@ static unsigned int fops_poll(struct file *file, poll_table *wait)
 	if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
 		if (atomic_inc_return(&port->v4l_reader_count) == 1) {
 			if (saa7164_encoder_initialize(port) < 0)
-				return POLLERR;
+				return mask | POLLERR;
 			saa7164_encoder_start_streaming(port);
 			msleep(200);
 		}
@@ -976,6 +976,10 @@ static const struct v4l2_ioctl_ops mpeg_ioctl_ops = {
 	.vidioc_g_fmt_vid_cap	 = vidioc_g_fmt_vid_cap,
 	.vidioc_try_fmt_vid_cap	 = vidioc_try_fmt_vid_cap,
 	.vidioc_s_fmt_vid_cap	 = vidioc_s_fmt_vid_cap,
+	.vidioc_s_fmt_vid_cap	 = vidioc_s_fmt_vid_cap,
+	.vidioc_log_status	 = v4l2_ctrl_log_status,
+	.vidioc_subscribe_event  = v4l2_ctrl_subscribe_event,
+	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 };
 
 static struct video_device saa7164_mpeg_template = {
diff --git a/drivers/media/pci/saa7164/saa7164.h b/drivers/media/pci/saa7164/saa7164.h
index 05707e393b2c..1d8e95d4dae3 100644
--- a/drivers/media/pci/saa7164/saa7164.h
+++ b/drivers/media/pci/saa7164/saa7164.h
@@ -65,6 +65,7 @@
 #include <media/v4l2-ioctl.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
 
 #include "saa7164-reg.h"
 #include "saa7164-types.h"