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media: imx: imx7_mipi_csis: Reject invalid data-lanes settings

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The CSIS doesn't support data lanes reordering. Reject invalid settings.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Laurent Pinchart 2021-04-13 04:30:12 +02:00 committed by Mauro Carvalho Chehab
parent 7479454cfe
commit 88fc81388d
1 changed files with 9 additions and 0 deletions
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9
drivers/staging/media/imx/imx7-mipi-csis.c
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@ -1114,6 +1114,7 @@ static int mipi_csis_async_register(struct csi_state *state)
};
struct v4l2_async_subdev *asd;
struct fwnode_handle *ep;
unsigned int i;
int ret;
v4l2_async_notifier_init(&state->notifier);
@ -1127,6 +1128,14 @@ static int mipi_csis_async_register(struct csi_state *state)
if (ret)
goto err_parse;
for (i = 0; i < vep.bus.mipi_csi2.num_data_lanes; ++i) {
if (vep.bus.mipi_csi2.data_lanes[i] != i + 1) {
dev_err(state->dev,
"data lanes reordering is not supported");
goto err_parse;
}
}
state->bus = vep.bus.mipi_csi2;
dev_dbg(state->dev, "data lanes: %d\n", state->bus.num_data_lanes);