Re: [PATCH v13 6/8] media: i2c: add DS90UB960 driver

[Tomi Valkeinen]

Hi,

On 16/05/2023 15:35, Ludwig Zenz wrote:
> On Wed, 26 Apr 2023 14:51:12 +0300, Tomi Valkeinen wrote:
>
> [...]
>
> >   +static int ub960_configure_ports_for_streaming(struct ub960_data *priv,
> >   +					       struct v4l2_subdev_state *state)
> >   +{
> >   +	u8 fwd_ctl;
> >   +	struct {
> >   +		u32 num_streams;
> >   +		u8 pixel_dt;
> >   +		u8 meta_dt;
> >   +		u32 meta_lines;
> >   +		u32 tx_port;
> >   +	} rx_data[UB960_MAX_RX_NPORTS] = {};
> >   +	u8 vc_map[UB960_MAX_RX_NPORTS] = {};
> >   +	struct v4l2_subdev_route *route;
> >   +	unsigned int nport;
> >   +	int ret;
> >   +
> >   +	ret = ub960_validate_stream_vcs(priv);
> >   +	if (ret)
> >   +		return ret;
> >   +
> >   +	ub960_get_vc_maps(priv, state, vc_map);
> >   +
> >   +	for_each_active_route(&state->routing, route) {
> >   +		struct ub960_rxport *rxport;
> >   +		struct ub960_txport *txport;
> >   +		struct v4l2_mbus_framefmt *fmt;
> >   +		const struct ub960_format_info *ub960_fmt;
> >   +		unsigned int nport;
> >   +
> >   +		nport = ub960_pad_to_port(priv, route->sink_pad);
> >   +
> >   +		rxport = priv->rxports[nport];
> >   +		if (!rxport)
> >   +			return -EINVAL;
> >   +
> >   +		txport = priv->txports[ub960_pad_to_port(priv, route->source_pad)];
> >   +		if (!txport)
> >   +			return -EINVAL;
> >   +
> >   +		rx_data[nport].tx_port = ub960_pad_to_port(priv, route->source_pad);
> >   +
> >   +		rx_data[nport].num_streams++;
> >   +
> >   +		/* For the rest, we are only interested in parallel busses */
> >   +		if (rxport->rx_mode == RXPORT_MODE_CSI2_SYNC ||
> >   +		    rxport->rx_mode == RXPORT_MODE_CSI2_ASYNC)
> >   +			continue;
> >   +
> >   +		if (rx_data[nport].num_streams > 2)
> >   +			return -EPIPE;
> >   +
> >   +		fmt = v4l2_subdev_state_get_stream_format(state,
> >   +							  route->sink_pad,
> >   +							  route->sink_stream);
> >   +		if (!fmt)
> >   +			return -EPIPE;
> >   +
> >   +		ub960_fmt = ub960_find_format(fmt->code);
> >   +		if (!ub960_fmt)
> >   +			return -EPIPE;
> >   +
> >   +		if (ub960_fmt->meta) {
> >   +			if (fmt->height > 3) {
> >   +				dev_err(&priv->client->dev,
> >   +					"rx%u: unsupported metadata height %u\n",
> >   +					nport, fmt->height);
> >   +				return -EPIPE;
> >   +			}
> >   +
> >   +			rx_data[nport].meta_dt = ub960_fmt->datatype;
> >   +			rx_data[nport].meta_lines = fmt->height;
> >   +		} else {
> >   +			rx_data[nport].pixel_dt = ub960_fmt->datatype;
> >   +		}
> >   +	}
> >   +
> >   +	/* Configure RX ports */
> >   +
> >   +	fwd_ctl = 0;
>
> Hello, I have only used the first RX port in my setup (ds90ub933 to ds90ub964). The logic for activating/deactivating the Rx ports did not work for me. My suggestion is:

Why doesn't it work? What happens?

 Tomi