Re: adv7180 as SoC camera device

[Rodolfo Giometti <giometti@enneenne.com>]

On Tue, Feb 23, 2010 at 12:19:13AM +0100, Richard Röjfors wrote:
> 
> We use it as a subdev to a driver not yet committed from us. So I think
> you should extend it, not move it.

Finally I got something functional... but I'm puzzled to know how I
can add platform data configuration struct by using the I2C's
platform_data pointer if it is already used to hold struct
soc_camera_device... O_o

In fact my probe function looks like:

static __devinit int adv7180_probe(struct i2c_client *client,
                        const struct i2c_device_id *id)
{
        struct adv7180_state *state;
        struct soc_camera_device *icd = client->dev.platform_data;
        struct soc_camera_link *icl;
        struct v4l2_subdev *sd;
        int ret;

        /* Check if the adapter supports the needed features */
        if (!i2c_check_functionality(client->adapter,
	I2C_FUNC_SMBUS_BYTE_DATA))
                return -EIO;

        v4l_info(client, "chip found @ 0x%02x (%s)\n",
                        client->addr << 1, client->adapter->name);

        if (icd) {
                icl = to_soc_camera_link(icd);
                if (!icl)
                        return -EINVAL;

                icd->ops = &adv7180_soc_ops;
                v4l_info(client, "soc-camera support enabled\n");
        } else
                pdata = client->dev.platform_data;

        state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL);
        if (state == NULL) {
                ret = -ENOMEM;
                goto err;
        }

        state->irq = client->irq;
        INIT_WORK(&state->work, adv7180_work);
        mutex_init(&state->mutex);
        state->autodetect = true;
        sd = &state->sd;
        v4l2_i2c_subdev_init(sd, client, &adv7180_ops);
	...

Thanks in advance,

Rodolfo

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