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media: i2c: imx214: Check number of lanes from device tree

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The imx214 camera is capable of either two-lane or four-lane operation.

Currently only the four-lane mode is supported, as proper pixel rates
and link frequences for the two-lane mode are unknown.

Acked-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: André Apitzsch <git@apitzsch.eu>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
André Apitzsch 2024-12-20 14:26:05 +01:00 committed by Hans Verkuil
parent ef9b58f257
commit 3d55f4eb03
1 changed files with 14 additions and 2 deletions
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16
drivers/media/i2c/imx214.c
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@ -197,7 +197,6 @@ struct imx214 {
/*From imx214_mode_tbls.h*/
static const struct cci_reg_sequence mode_4096x2304[] = {
{ IMX214_REG_CSI_LANE_MODE, IMX214_CSI_4_LANE_MODE },
{ IMX214_REG_HDR_MODE, IMX214_HDR_MODE_OFF },
{ IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH },
{ IMX214_REG_EXPOSURE_RATIO, 1 },
@ -270,7 +269,6 @@ static const struct cci_reg_sequence mode_4096x2304[] = {
};
static const struct cci_reg_sequence mode_1920x1080[] = {
{ IMX214_REG_CSI_LANE_MODE, IMX214_CSI_4_LANE_MODE },
{ IMX214_REG_HDR_MODE, IMX214_HDR_MODE_OFF },
{ IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH },
{ IMX214_REG_EXPOSURE_RATIO, 1 },
@ -787,6 +785,13 @@ static int imx214_start_streaming(struct imx214 *imx214)
return ret;
}
ret = cci_write(imx214->regmap, IMX214_REG_CSI_LANE_MODE,
IMX214_CSI_4_LANE_MODE, NULL);
if (ret) {
dev_err(imx214->dev, "failed to configure lanes\n");
return ret;
}
state = v4l2_subdev_get_locked_active_state(&imx214->sd);
fmt = v4l2_subdev_state_get_format(state, 0);
mode = v4l2_find_nearest_size(imx214_modes, ARRAY_SIZE(imx214_modes),
@ -951,6 +956,13 @@ static int imx214_parse_fwnode(struct device *dev)
goto done;
}
/* Check the number of MIPI CSI2 data lanes */
if (bus_cfg.bus.mipi_csi2.num_data_lanes != 4) {
ret = dev_err_probe(dev, -EINVAL,
"only 4 data lanes are currently supported\n");
goto done;
}
for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
if (bus_cfg.link_frequencies[i] == IMX214_DEFAULT_LINK_FREQ)
break;