[PATCH 05/13] media: i2c: ds90ub960: Fix UB9702 VC map

From: Tomi Valkeinen
Date: Fri Oct 04 2024 - 10:53:28 EST


The driver uses a static CSI-2 virtual channel mapping where all virtual
channels from an RX port are mapped to a virtual channel number matching
the RX port number.

The UB960 and UB9702 have different registers for the purpose, and the
UB9702 version is not correct. Each of the VC_ID_MAP registers do not
contain a single mapping, as the driver currently thinks, but two.

This can cause received VCs other than 0 to be mapped in a wrong way.

Fix this by writing both mappings to each register.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
Fixes: afe267f2d368 ("media: i2c: add DS90UB960 driver")
---
drivers/media/i2c/ds90ub960.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/ds90ub960.c b/drivers/media/i2c/ds90ub960.c
index 5c393ec6c682..9dc36bba0a87 100644
--- a/drivers/media/i2c/ds90ub960.c
+++ b/drivers/media/i2c/ds90ub960.c
@@ -2533,7 +2533,7 @@ static int ub960_configure_ports_for_streaming(struct ub960_data *priv,
for (i = 0; i < 8; i++)
ub960_rxport_write(priv, nport,
UB960_RR_VC_ID_MAP(i),
- nport);
+ (nport << 4) | nport);
}

break;

--
2.43.0