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

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[ Upstream commit 3d55f4eb03fce69f3a72615fe9c5ca171f7b846b ]

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>
Stable-dep-of: acc294519f17 ("media: i2c: imx214: Fix link frequency validation")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
André Apitzsch
2024-12-20 14:26:05 +01:00
committed by Greg Kroah-Hartman
parent 2a60b6bef4
commit 5a5ab62e4a
1 changed files with 14 additions and 2 deletions
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drivers/media/i2c/imx214.c
+14 -2
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@@ -197,7 +197,6 @@ struct imx214 {
/*From imx214_mode_tbls.h*/ /*From imx214_mode_tbls.h*/
static const struct cci_reg_sequence mode_4096x2304[] = { 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_MODE, IMX214_HDR_MODE_OFF },
{ IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH }, { IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH },
{ IMX214_REG_EXPOSURE_RATIO, 1 }, { IMX214_REG_EXPOSURE_RATIO, 1 },
@@ -271,7 +270,6 @@ static const struct cci_reg_sequence mode_4096x2304[] = {
}; };
static const struct cci_reg_sequence mode_1920x1080[] = { 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_MODE, IMX214_HDR_MODE_OFF },
{ IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH }, { IMX214_REG_HDR_RES_REDUCTION, IMX214_HDR_RES_REDU_THROUGH },
{ IMX214_REG_EXPOSURE_RATIO, 1 }, { IMX214_REG_EXPOSURE_RATIO, 1 },
@@ -789,6 +787,13 @@ static int imx214_start_streaming(struct imx214 *imx214)
return ret; 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); state = v4l2_subdev_get_locked_active_state(&imx214->sd);
fmt = v4l2_subdev_state_get_format(state, 0); fmt = v4l2_subdev_state_get_format(state, 0);
mode = v4l2_find_nearest_size(imx214_modes, ARRAY_SIZE(imx214_modes), mode = v4l2_find_nearest_size(imx214_modes, ARRAY_SIZE(imx214_modes),
@@ -953,6 +958,13 @@ static int imx214_parse_fwnode(struct device *dev)
goto done; 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++) for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
if (bus_cfg.link_frequencies[i] == IMX214_DEFAULT_LINK_FREQ) if (bus_cfg.link_frequencies[i] == IMX214_DEFAULT_LINK_FREQ)
break; break;