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media: i2c: ds90ub960: Fix UB9702 VC map

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commit 5dbbd0609b83f6eb72c005e2e5979d0cd25243c8 upstream.

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.

Cc: stable@vger.kernel.org
Fixes: afe267f2d3 ("media: i2c: add DS90UB960 driver")
Reviewed-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomi Valkeinen
2024-12-06 10:26:41 +02:00
committed by Greg Kroah-Hartman
parent 45e2ad4e12
commit c3c9300062
1 changed files with 1 additions and 1 deletions
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2
drivers/media/i2c/ds90ub960.c
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@@ -2534,7 +2534,7 @@ 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;