From: Steve Longerbeam <slongerb...@gmail.com>
The ADV7180 and ADV7182 transmit whole fields, bottom field followed
by top (or vice-versa, depending on detected video standard). So
for chips that do not have support for explicitly setting the field
mode, set the field mode to V4L2_FIELD_ALTERNATE.
Signed-off-by: Steve Longerbeam <steve_longerb...@mentor.com>
[Niklas: changed filed type from V4L2_FIELD_SEQ_{TB,BT} to
V4L2_FIELD_ALTERNATE]
Signed-off-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
---
v5:
- Readd patch version and changelog which was dropped in v4.
v4:
- Switch V4L2_FIELD_SEQ_TB/V4L2_FIELD_SEQ_BT to V4L2_FIELD_ALTERNATE.
- Update of Steves patch by Niklas.
v3: no changes
v2:
- the init of state->curr_norm in probe needs to be moved up, ahead
of the init of state->field.
---
drivers/media/i2c/adv7180.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index a8b434b..c6fed71 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -680,10 +680,13 @@ static int adv7180_set_pad_format(struct v4l2_subdev *sd,
switch (format->format.field) {
case V4L2_FIELD_NONE:
if (!(state->chip_info->flags & ADV7180_FLAG_I2P))
- format->format.field = V4L2_FIELD_INTERLACED;
+ format->format.field = V4L2_FIELD_ALTERNATE;
break;
default:
- format->format.field = V4L2_FIELD_INTERLACED;
+ if (state->chip_info->flags & ADV7180_FLAG_I2P)
+ format->format.field = V4L2_FIELD_INTERLACED;
+ else
+ format->format.field = V4L2_FIELD_ALTERNATE;
break;
}
@@ -1253,8 +1256,13 @@ static int adv7180_probe(struct i2c_client *client,
return -ENOMEM;
state->client = client;
- state->field = V4L2_FIELD_INTERLACED;
state->chip_info = (struct adv7180_chip_info *)id->driver_data;
+ state->curr_norm = V4L2_STD_NTSC;
+
+ if (state->chip_info->flags & ADV7180_FLAG_I2P)
+ state->field = V4L2_FIELD_INTERLACED;
+ else
+ state->field = V4L2_FIELD_ALTERNATE;
if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
state->csi_client = i2c_new_dummy(client->adapter,
@@ -1274,7 +1282,6 @@ static int adv7180_probe(struct i2c_client *client,
state->irq = client->irq;
mutex_init(&state->mutex);
- state->curr_norm = V4L2_STD_NTSC;
if (state->chip_info->flags & ADV7180_FLAG_RESET_POWERED)
state->powered = true;
else
--
2.9.0
--
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