V4L/DVB: ivtv: Avoid accidental video standard change

For yuv video output, pass fake values to avoid firmware trying to change
video standard.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 14 insertions, 2 deletions

diff --git a/drivers/media/video/ivtv/ivtv-streams.c b/drivers/media/video/ivtv/ivtv-streams.c
index de4288cc1889..5441dc205966 100644
--- a/drivers/media/video/ivtv/ivtv-streams.c
+++ b/drivers/media/video/ivtv/ivtv-streams.c
@@ -618,12 +618,17 @@ static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
         struct ivtv *itv = s->itv;
         struct cx2341x_mpeg_params *p = &itv->params;
         int datatype;
+        u16 width;
+        u16 height;
 
         if (s->vdev == NULL)
                 return -EINVAL;
 
         IVTV_DEBUG_INFO("Setting some initial decoder settings\n");
 
+        width = p->width;
+        height = p->height;
+
         /* set audio mode to left/stereo  for dual/stereo mode. */
         ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
 
@@ -646,7 +651,14 @@ static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
            2 = yuv_from_host */
         switch (s->type) {
         case IVTV_DEC_STREAM_TYPE_YUV:
-                datatype = itv->output_mode == OUT_PASSTHROUGH ? 1 : 2;
+                if (itv->output_mode == OUT_PASSTHROUGH) {
+                        datatype = 1;
+                } else {
+                        /* Fake size to avoid switching video standard */
+                        datatype = 2;
+                        width = 720;
+                        height = itv->is_out_50hz ? 576 : 480;
+                }
                 IVTV_DEBUG_INFO("Setup DEC YUV Stream data[0] = %d\n", datatype);
                 break;
         case IVTV_DEC_STREAM_TYPE_MPG:
@@ -655,7 +667,7 @@ static int ivtv_setup_v4l2_decode_stream(struct ivtv_stream *s)
                 break;
         }
         if (ivtv_vapi(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, datatype,
-                        p->width, p->height, p->audio_properties)) {
+                        width, height, p->audio_properties)) {
                 IVTV_DEBUG_WARN("Couldn't initialize decoder source\n");
         }
         return 0;