[media] v4l2-dv-timings: add callback to handle exceptions
In most cases the v4l2_bt_timings_cap struct has all the information
necessary to determine valid timings, but occasionally there are exceptions.
Add a callback function to be able to test for those exceptions.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c
index a77f201..ee52b9f4 100644
--- a/drivers/media/v4l2-core/v4l2-dv-timings.c
+++ b/drivers/media/v4l2-core/v4l2-dv-timings.c
@@ -132,7 +132,9 @@
EXPORT_SYMBOL_GPL(v4l2_dv_timings_presets);
bool v4l2_valid_dv_timings(const struct v4l2_dv_timings *t,
- const struct v4l2_dv_timings_cap *dvcap)
+ const struct v4l2_dv_timings_cap *dvcap,
+ v4l2_check_dv_timings_fnc fnc,
+ void *fnc_handle)
{
const struct v4l2_bt_timings *bt = &t->bt;
const struct v4l2_bt_timings_cap *cap = &dvcap->bt;
@@ -151,18 +153,21 @@
(bt->interlaced && !(caps & V4L2_DV_BT_CAP_INTERLACED)) ||
(!bt->interlaced && !(caps & V4L2_DV_BT_CAP_PROGRESSIVE)))
return false;
- return true;
+ return fnc == NULL || fnc(t, fnc_handle);
}
EXPORT_SYMBOL_GPL(v4l2_valid_dv_timings);
int v4l2_enum_dv_timings_cap(struct v4l2_enum_dv_timings *t,
- const struct v4l2_dv_timings_cap *cap)
+ const struct v4l2_dv_timings_cap *cap,
+ v4l2_check_dv_timings_fnc fnc,
+ void *fnc_handle)
{
u32 i, idx;
memset(t->reserved, 0, sizeof(t->reserved));
for (i = idx = 0; v4l2_dv_timings_presets[i].bt.width; i++) {
- if (v4l2_valid_dv_timings(v4l2_dv_timings_presets + i, cap) &&
+ if (v4l2_valid_dv_timings(v4l2_dv_timings_presets + i, cap,
+ fnc, fnc_handle) &&
idx++ == t->index) {
t->timings = v4l2_dv_timings_presets[i];
return 0;
@@ -174,16 +179,20 @@
bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t,
const struct v4l2_dv_timings_cap *cap,
- unsigned pclock_delta)
+ unsigned pclock_delta,
+ v4l2_check_dv_timings_fnc fnc,
+ void *fnc_handle)
{
int i;
- if (!v4l2_valid_dv_timings(t, cap))
+ if (!v4l2_valid_dv_timings(t, cap, fnc, fnc_handle))
return false;
for (i = 0; i < v4l2_dv_timings_presets[i].bt.width; i++) {
- if (v4l2_valid_dv_timings(v4l2_dv_timings_presets + i, cap) &&
- v4l2_match_dv_timings(t, v4l2_dv_timings_presets + i, pclock_delta)) {
+ if (v4l2_valid_dv_timings(v4l2_dv_timings_presets + i, cap,
+ fnc, fnc_handle) &&
+ v4l2_match_dv_timings(t, v4l2_dv_timings_presets + i,
+ pclock_delta)) {
*t = v4l2_dv_timings_presets[i];
return true;
}