V4L/DVB (4197): Port new MPEG API to saa7134-empress with saa6752hs

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 19 insertions, 1 deletions

diff --git a/drivers/media/video/saa7134/saa7134-empress.c b/drivers/media/video/saa7134/saa7134-empress.c
index 1d972edb3be6..bc743b9253fd 100644
--- a/drivers/media/video/saa7134/saa7134-empress.c
+++ b/drivers/media/video/saa7134/saa7134-empress.c
@@ -64,8 +64,10 @@ static void ts_reset_encoder(struct saa7134_dev* dev)
 
 static int ts_init_encoder(struct saa7134_dev* dev)
 {
+        struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 };
+
         ts_reset_encoder(dev);
-        saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL);
+        saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls);
         dev->empress_started = 1;
         return 0;
 }
@@ -162,6 +164,7 @@ static int ts_do_ioctl(struct inode *inode, struct file *file,
                        unsigned int cmd, void *arg)
 {
         struct saa7134_dev *dev = file->private_data;
+        struct v4l2_ext_controls *ctrls = arg;
 
         if (debug > 1)
                 v4l_print_ioctl(dev->name,cmd);
@@ -284,6 +287,21 @@ static int ts_do_ioctl(struct inode *inode, struct file *file,
         case VIDIOC_G_MPEGCOMP:
                 saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg);
                 return 0;
+        case VIDIOC_S_EXT_CTRLS:
+                /* count == 0 is abused in saa6752hs.c, so that special
+                   case is handled here explicitly. */
+                if (ctrls->count == 0)
+                        return 0;
+                if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
+                        return -EINVAL;
+                saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, arg);
+                ts_init_encoder(dev);
+                return 0;
+        case VIDIOC_G_EXT_CTRLS:
+                if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
+                        return -EINVAL;
+                saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, arg);
+                return 0;
 
         default:
                 return -ENOIOCTLCMD;