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media: i2c: adv748x: Implement get_mbus_config 

Implement the newly introduced get_mbus_config operation to report the
number of currently used data lanes on the MIPI CSI-2 interface.

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Jacopo Mondi 2020-07-17 16:53:23 +02:00 committed by Mauro Carvalho Chehab
parent 147d5ea15c
commit a61b1b5d41
1 changed files with 31 additions and 0 deletions
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31
drivers/media/i2c/adv748x/adv748x-csi2.c
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@ -214,9 +214,40 @@ unlock:
return ret;
}
static int adv748x_csi2_get_mbus_config(struct v4l2_subdev *sd, unsigned int pad,
struct v4l2_mbus_config *config)
{
struct adv748x_csi2 *tx = adv748x_sd_to_csi2(sd);
if (pad != ADV748X_CSI2_SOURCE)
return -EINVAL;
config->type = V4L2_MBUS_CSI2_DPHY;
switch (tx->active_lanes) {
case 1:
config->flags = V4L2_MBUS_CSI2_1_LANE;
break;
case 2:
config->flags = V4L2_MBUS_CSI2_2_LANE;
break;
case 3:
config->flags = V4L2_MBUS_CSI2_3_LANE;
break;
case 4:
config->flags = V4L2_MBUS_CSI2_4_LANE;
break;
}
return 0;
}
static const struct v4l2_subdev_pad_ops adv748x_csi2_pad_ops = {
.get_fmt = adv748x_csi2_get_format,
.set_fmt = adv748x_csi2_set_format,
.get_mbus_config = adv748x_csi2_get_mbus_config,
};
/* -----------------------------------------------------------------------------