[PATCH v5 2/3] media: i2c: imx412: Assign v4l2 device subname based on compat string

From: Bryan O'Donoghue
Date: Thu Oct 13 2022 - 08:51:59 EST


imx412 and imx577 return the same chip-id when interrogated via i2c.
I've confirmed this myself by

Sakari suggested we should add a new compat which should be reflected in
the name of the media entity

https://patchwork.kernel.org/project/linux-media/patch/20220607134057.2427663-3-bryan.odonoghue@xxxxxxxxxx/#24894500

Set up the .data parameter of of_device_id to pass a string which
we use to set the media entity name. Once done we can add in imx577 as a
compatible chips with the media names reflecting the directed compat string.

Cc: sakari.ailus@xxxxxx
Cc: dave.stevenson@xxxxxxxxxxxxxxx
Cc: jacopo@xxxxxxxxxx
Cc: "Paul J. Murphy" <paul.j.murphy@xxxxxxxxx>
Cc: Daniele Alessandrelli <daniele.alessandrelli@xxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>
Cc: linux-media@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
---
drivers/media/i2c/imx412.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c
index a1394d6c1432..9f854a1a4c2f 100644
--- a/drivers/media/i2c/imx412.c
+++ b/drivers/media/i2c/imx412.c
@@ -1172,6 +1172,7 @@ static int imx412_init_controls(struct imx412 *imx412)
static int imx412_probe(struct i2c_client *client)
{
struct imx412 *imx412;
+ const char *name;
int ret;

imx412 = devm_kzalloc(&client->dev, sizeof(*imx412), GFP_KERNEL);
@@ -1179,6 +1180,9 @@ static int imx412_probe(struct i2c_client *client)
return -ENOMEM;

imx412->dev = &client->dev;
+ name = device_get_match_data(&client->dev);
+ if (!name)
+ return -ENODEV;

/* Initialize subdev */
v4l2_i2c_subdev_init(&imx412->sd, client, &imx412_subdev_ops);
@@ -1218,6 +1222,8 @@ static int imx412_probe(struct i2c_client *client)
imx412->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
imx412->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;

+ v4l2_i2c_subdev_set_name(&imx412->sd, client, name, NULL);
+
/* Initialize source pad */
imx412->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&imx412->sd.entity, 1, &imx412->pad);
@@ -1281,7 +1287,7 @@ static const struct dev_pm_ops imx412_pm_ops = {
};

static const struct of_device_id imx412_of_match[] = {
- { .compatible = "sony,imx412" },
+ { .compatible = "sony,imx412", .data = "imx412" },
{ }
};

--
2.34.1