Hi Sakari,
Thanks for your patch.
On 2017-12-04 23:45:01 +0200, Sakari Ailus wrote:
> Print debug info as standard V4L2 endpoint are parsed.
>
> Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
> ---
> drivers/media/v4l2-core/v4l2-fwnode.c | 101
> +++++++++++++++++++++++++++-------
> 1 file changed, 80 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c
> b/drivers/media/v4l2-core/v4l2-fwnode.c
> index 9c17a26d544c..bc927bbd4160 100644
> --- a/drivers/media/v4l2-core/v4l2-fwnode.c
> +++ b/drivers/media/v4l2-core/v4l2-fwnode.c
> @@ -66,6 +66,7 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct
> fwnode_handle *fwnode,
> lanes_used |= BIT(array[i]);
>
> bus->data_lanes[i] = array[i];
> + pr_debug("lane %u position %u\n", i, array[i]);
> }
>
> rval = fwnode_property_read_u32_array(fwnode,
> @@ -82,8 +83,13 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct
> fwnode_handle *fwnode,
> "lane-polarities", array,
> 1 + bus->num_data_lanes);
>
> - for (i = 0; i < 1 + bus->num_data_lanes; i++)
> + for (i = 0; i < 1 + bus->num_data_lanes; i++) {
> bus->lane_polarities[i] = array[i];
> + pr_debug("lane %u polarity %sinverted",
> + i, array[i] ? "" : "not ");
> + }
> + } else {
> + pr_debug("no lane polarities defined, assuming not
> inverted\n");
> }
>
> }
> @@ -95,12 +101,15 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct
> fwnode_handle *fwnode,
>
> bus->clock_lane = v;
> have_clk_lane = true;
> + pr_debug("clock lane position %u\n", v);
> }
>
> - if (fwnode_property_present(fwnode, "clock-noncontinuous"))
> + if (fwnode_property_present(fwnode, "clock-noncontinuous")) {
> flags |= V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK;
> - else if (have_clk_lane || bus->num_data_lanes > 0)
> + pr_debug("contiguous clock\n");
> + } else if (have_clk_lane || bus->num_data_lanes > 0) {
> flags |= V4L2_MBUS_CSI2_CONTINUOUS_CLOCK;
> + }
>
> bus->flags = flags;
> vep->bus_type = V4L2_MBUS_CSI2;
> @@ -115,44 +124,63 @@ static void v4l2_fwnode_endpoint_parse_parallel_bus(
> unsigned int flags = 0;
> u32 v;
>
> - if (!fwnode_property_read_u32(fwnode, "hsync-active", &v))
> + if (!fwnode_property_read_u32(fwnode, "hsync-active", &v)) {
> flags |= v ? V4L2_MBUS_HSYNC_ACTIVE_HIGH :
> V4L2_MBUS_HSYNC_ACTIVE_LOW;
> + pr_debug("hsync-active %s\n", v ? "high" : "low");
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "vsync-active", &v))
> + if (!fwnode_property_read_u32(fwnode, "vsync-active", &v)) {
> flags |= v ? V4L2_MBUS_VSYNC_ACTIVE_HIGH :
> V4L2_MBUS_VSYNC_ACTIVE_LOW;
> + pr_debug("vsync-active %s\n", v ? "high" : "low");
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "field-even-active", &v))
> + if (!fwnode_property_read_u32(fwnode, "field-even-active", &v)) {
> flags |= v ? V4L2_MBUS_FIELD_EVEN_HIGH :
> V4L2_MBUS_FIELD_EVEN_LOW;
> + pr_debug("field-even-active %s\n", v ? "high": "low");
> + }
> +
> if (flags)
> vep->bus_type = V4L2_MBUS_PARALLEL;
> else
> vep->bus_type = V4L2_MBUS_BT656;
>
> - if (!fwnode_property_read_u32(fwnode, "pclk-sample", &v))
> + if (!fwnode_property_read_u32(fwnode, "pclk-sample", &v)) {
> flags |= v ? V4L2_MBUS_PCLK_SAMPLE_RISING :
> V4L2_MBUS_PCLK_SAMPLE_FALLING;
> + pr_debug("pclk-sample %s\n", v ? "high" : "low");
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "data-active", &v))
> + if (!fwnode_property_read_u32(fwnode, "data-active", &v)) {
> flags |= v ? V4L2_MBUS_DATA_ACTIVE_HIGH :
> V4L2_MBUS_DATA_ACTIVE_LOW;
> + pr_debug("data-active %s\n", v ? "high" : "low");
> + }
>
> - if (fwnode_property_present(fwnode, "slave-mode"))
> + if (fwnode_property_present(fwnode, "slave-mode")) {
> + pr_debug("slave mode\n");
> flags |= V4L2_MBUS_SLAVE;
> - else
> + } else {
> flags |= V4L2_MBUS_MASTER;
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "bus-width", &v))
> + if (!fwnode_property_read_u32(fwnode, "bus-width", &v)) {
> bus->bus_width = v;
> + pr_debug("bus-width %u\n", v);
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "data-shift", &v))
> + if (!fwnode_property_read_u32(fwnode, "data-shift", &v)) {
> bus->data_shift = v;
> + pr_debug("data-shift %u\n", v);
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "sync-on-green-active", &v))
> + if (!fwnode_property_read_u32(fwnode, "sync-on-green-active", &v)) {
> flags |= v ? V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH :
> V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW;
> + pr_debug("sync-on-green-active %s\n", v ? "high" : "low");
> + }
>
> bus->flags = flags;
>
> @@ -166,17 +194,25 @@ v4l2_fwnode_endpoint_parse_csi1_bus(struct
> fwnode_handle *fwnode,
> struct v4l2_fwnode_bus_mipi_csi1 *bus = &vep->bus.mipi_csi1;
> u32 v;
>
> - if (!fwnode_property_read_u32(fwnode, "clock-inv", &v))
> + if (!fwnode_property_read_u32(fwnode, "clock-inv", &v)) {
> bus->clock_inv = v;
> + pr_debug("clock-inv %u\n", v);
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "strobe", &v))
> + if (!fwnode_property_read_u32(fwnode, "strobe", &v)) {
> bus->strobe = v;
> + pr_debug("strobe %u\n", v);
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "data-lanes", &v))
> + if (!fwnode_property_read_u32(fwnode, "data-lanes", &v)) {
> bus->data_lane = v;
> + pr_debug("data-lanes %u\n", v);
> + }
>
> - if (!fwnode_property_read_u32(fwnode, "clock-lanes", &v))
> + if (!fwnode_property_read_u32(fwnode, "clock-lanes", &v)) {
> bus->clock_lane = v;
> + pr_debug("clock-lanes %u\n", v);
> + }
>
> if (bus_type == V4L2_FWNODE_BUS_TYPE_CCP2)
> vep->bus_type = V4L2_MBUS_CCP2;
> @@ -184,12 +220,14 @@ v4l2_fwnode_endpoint_parse_csi1_bus(struct
> fwnode_handle *fwnode,
> vep->bus_type = V4L2_MBUS_CSI1;
> }
>
> -int v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode,
> +int __v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode,
> struct v4l2_fwnode_endpoint *vep)
> {
> u32 bus_type = 0;
> int rval;
>
> + pr_debug("===== begin V4L2 endpoint properties\n");
> +
> fwnode_graph_parse_endpoint(fwnode, &vep->base);
>
> /* Zero fields from bus_type to until the end */
> @@ -210,16 +248,29 @@ int v4l2_fwnode_endpoint_parse(struct fwnode_handle
> *fwnode,
> if (vep->bus.mipi_csi2.flags == 0)
> v4l2_fwnode_endpoint_parse_parallel_bus(fwnode, vep);
>
> - return 0;
> + break;
> case V4L2_FWNODE_BUS_TYPE_CCP2:
> case V4L2_FWNODE_BUS_TYPE_CSI1:
> v4l2_fwnode_endpoint_parse_csi1_bus(fwnode, vep, bus_type);
>
> - return 0;
> + break;
> default:
> pr_warn("unsupported bus type %u\n", bus_type);
> return -EINVAL;
> }
> +
> + return 0;
> +}
> +int v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode,
> + struct v4l2_fwnode_endpoint *vep)
> +{
> + int ret;
> +
> + ret = __v4l2_fwnode_endpoint_parse(fwnode, vep);
> +
> + pr_debug("===== end V4L2 endpoint properties\n");
> +
> + return ret;
> }
> EXPORT_SYMBOL_GPL(v4l2_fwnode_endpoint_parse);
>
> @@ -243,13 +294,15 @@ struct v4l2_fwnode_endpoint
> *v4l2_fwnode_endpoint_alloc_parse(
> if (!vep)
> return ERR_PTR(-ENOMEM);
>
> - rval = v4l2_fwnode_endpoint_parse(fwnode, vep);
> + rval = __v4l2_fwnode_endpoint_parse(fwnode, vep);
> if (rval < 0)
> goto out_err;
>
> rval = fwnode_property_read_u64_array(fwnode, "link-frequencies",
> NULL, 0);
> if (rval > 0) {
> + unsigned int i;
> +
> vep->link_frequencies =
> kmalloc_array(rval, sizeof(*vep->link_frequencies),
> GFP_KERNEL);
> @@ -265,8 +318,14 @@ struct v4l2_fwnode_endpoint
> *v4l2_fwnode_endpoint_alloc_parse(
> vep->nr_of_link_frequencies);
> if (rval < 0)
> goto out_err;
> +
> + for (i = 0; i < vep->nr_of_link_frequencies; i++)
> + pr_info("link-frequencies %u value %llu\n", i,
> + vep->link_frequencies[i]);
> }
>
> + pr_debug("===== end V4L2 endpoint properties\n");
> +
> return vep;
>
> out_err:
> --
> 2.11.0
>
--
Regards,
Niklas Söderlund
