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authorMike Isely <isely@pobox.com>2006-09-02 22:37:52 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-09-26 12:30:35 -0300
commit3ad9fc37bacd74c5c05eb0bd4b76876e0daf8a2d (patch)
treefae4e6dc78ea80a95f49174dd6a806b186dca2e0 /drivers/media
parent22ebb77dfa94904f534563512b70178f98bbe962 (diff)
V4L/DVB (4597): Improve resolution limit enforcements in pvrusb2
The pvrusb2 driver resolution limits are now programmed the following way, based on empirical measurements of the hardware: Vertical max: 480 for NTSC, 576 otherwise Vertical min: 75 for 24xxx, 17 otherwise Horizontal max: 720 Horizontal min: 720 for 24xxx, 19 otherwise Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-hdw.c30
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 6ab6fd18734..88604365777 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -377,6 +377,28 @@ static int ctrl_hres_min_get(struct pvr2_ctrl *cptr,int *vp)
return 0;
}
+static int ctrl_vres_max_get(struct pvr2_ctrl *cptr,int *vp)
+{
+ /* Actual maximum depends on the video standard in effect. */
+ if (cptr->hdw->std_mask_cur & V4L2_STD_525_60) {
+ *vp = 480;
+ } else {
+ *vp = 576;
+ }
+ return 0;
+}
+
+static int ctrl_vres_min_get(struct pvr2_ctrl *cptr,int *vp)
+{
+ /* Actual minimum depends on device type. */
+ if (cptr->hdw->hdw_type == PVR2_HDW_TYPE_24XXX) {
+ *vp = 75;
+ } else {
+ *vp = 17;
+ }
+ return 0;
+}
+
static int ctrl_cx2341x_is_dirty(struct pvr2_ctrl *cptr)
{
return cptr->hdw->enc_stale != 0;
@@ -734,7 +756,7 @@ static const struct pvr2_ctl_info control_defs[] = {
.internal_id = PVR2_CID_HRES,
.default_value = 720,
DEFREF(res_hor),
- DEFINT(320,720),
+ DEFINT(19,720),
/* Hook in check for clamp on horizontal resolution in
order to avoid unsolved problem involving cx25840. */
.get_max_value = ctrl_hres_max_get,
@@ -745,7 +767,11 @@ static const struct pvr2_ctl_info control_defs[] = {
.internal_id = PVR2_CID_VRES,
.default_value = 480,
DEFREF(res_ver),
- DEFINT(200,625),
+ DEFINT(17,576),
+ /* Hook in check for video standard and adjust maximum
+ depending on the standard. */
+ .get_max_value = ctrl_vres_max_get,
+ .get_min_value = ctrl_vres_min_get,
},{
.v4l_id = V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
.default_value = V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000,