Hey,
* Krzysztof Hałasa, 2018-05-10 10:19:
> I'm using analog PAL video in on GW53xx/54xx boards (through ADV7180
> chip and 8-bit parallel CSI input, with (presumably) BT.656).
[...]
> First, I can't find a way to change to PAL standard. *s_std() doesn't
> propagate from "ipu2_csi1 capture" through "ipu2_csi1_mux" to adv7180.
>
> For now I have just changed the default:
> --- a/drivers/media/i2c/adv7180.c
> +++ b/drivers/media/i2c/adv7180.c
> @@ -1320,7 +1321,7 @@ static int adv7180_probe(struct i2c_client *client,
>
> state->irq = client->irq;
> mutex_init(&state->mutex);
> - state->curr_norm = V4L2_STD_NTSC;
> + state->curr_norm = V4L2_STD_PAL;
> if (state->chip_info->flags & ADV7180_FLAG_RESET_POWERED)
> state->powered = true;
> else
JFTR: I had a similar problem on a board, where there can either be an
NTSC *or* a PAL camera, so I had to make it dynamic.
diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
index 3df28f2f9b38..e5ebebf7a1f4 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1320,7 +1320,27 @@ static int adv7180_probe(struct i2c_client *client,
state->irq = client->irq;
mutex_init(&state->mutex);
+
+ /* check if video standard (PAL, NTSC) has already been determined */
+ ret = adv7180_read(state, ADV7180_REG_STATUS1);
+ if (ret < 0) {
+ ret = -EIO;
+ goto err_unregister_vpp_client;
+ }
+
state->curr_norm = V4L2_STD_NTSC;
+ if (ret & ADV7180_STATUS1_IN_LOCK) {
+ ret = (ret >> 4) & 0x07; /* autodetection result (AD_RESULT) */
+ if (ret >= 2 && ret <= 4) {
+ v4l_info(client, "locked on PAL signal\n");
+ state->curr_norm = V4L2_STD_PAL;
+ } else {
+ v4l_info(client, "locked on NTSC signal\n");
+ }
+ } else {
+ v4l_info(client, "no signal, using NTSC\n");
+ }
+
if (state->chip_info->flags & ADV7180_FLAG_RESET_POWERED)
state->powered = true;
else
m.
Melchior Franz | Entwicklung Software
GINZINGER ELECTRONIC SYSTEMS GMBH
Tel.: +43 7723 5422 156
Mail: melchior.franz@xxxxxxxxxxxxx
Web: www.ginzinger.com
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