Hi,
On Thu, Jul 06, 2017 at 02:00:16AM +0300, Sakari Ailus wrote:
> From: Sakari Ailus <sakari.ailus@xxxxxx>
>
> CCP2 and CSI-1, are older single data lane serial busses.
>
> Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
> Signed-off-by: Pavel Machek <pavel@xxxxxx>
Reviewed-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx>
-- Sebastian
> ---
> drivers/media/platform/pxa_camera.c | 3 ++
> drivers/media/platform/soc_camera/soc_mediabus.c | 3 ++
> drivers/media/v4l2-core/v4l2-fwnode.c | 58 +++++++++++++++++++-----
> include/media/v4l2-fwnode.h | 19 ++++++++
> include/media/v4l2-mediabus.h | 4 ++
> 5 files changed, 76 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/media/platform/pxa_camera.c b/drivers/media/platform/pxa_camera.c
> index 399095170b6e..17e797c9559f 100644
> --- a/drivers/media/platform/pxa_camera.c
> +++ b/drivers/media/platform/pxa_camera.c
> @@ -638,6 +638,9 @@ static unsigned int pxa_mbus_config_compatible(const struct v4l2_mbus_config *cf
> mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
> V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
> return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
> + default:
> + __WARN();
> + return -EINVAL;
> }
> return 0;
> }
> diff --git a/drivers/media/platform/soc_camera/soc_mediabus.c b/drivers/media/platform/soc_camera/soc_mediabus.c
> index 57581f626f4c..43192d80beef 100644
> --- a/drivers/media/platform/soc_camera/soc_mediabus.c
> +++ b/drivers/media/platform/soc_camera/soc_mediabus.c
> @@ -508,6 +508,9 @@ unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
> mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
> V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
> return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
> + default:
> + __WARN();
> + return -EINVAL;
> }
> return 0;
> }
> diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
> index d71dd3913cd9..76a88f210cb6 100644
> --- a/drivers/media/v4l2-core/v4l2-fwnode.c
> +++ b/drivers/media/v4l2-core/v4l2-fwnode.c
> @@ -154,6 +154,31 @@ static void v4l2_fwnode_endpoint_parse_parallel_bus(
>
> }
>
> +void v4l2_fwnode_endpoint_parse_csi1_bus(struct fwnode_handle *fwnode,
> + struct v4l2_fwnode_endpoint *vep,
> + u32 bus_type)
> +{
> + struct v4l2_fwnode_bus_mipi_csi1 *bus = &vep->bus.mipi_csi1;
> + u32 v;
> +
> + if (!fwnode_property_read_u32(fwnode, "clock-inv", &v))
> + bus->clock_inv = v;
> +
> + if (!fwnode_property_read_u32(fwnode, "strobe", &v))
> + bus->strobe = v;
> +
> + if (!fwnode_property_read_u32(fwnode, "data-lanes", &v))
> + bus->data_lane = v;
> +
> + if (!fwnode_property_read_u32(fwnode, "clock-lanes", &v))
> + bus->clock_lane = v;
> +
> + if (bus_type == V4L2_FWNODE_BUS_TYPE_CCP2)
> + vep->bus_type = V4L2_MBUS_CCP2;
> + else
> + vep->bus_type = V4L2_MBUS_CSI1;
> +}
> +
> /**
> * v4l2_fwnode_endpoint_parse() - parse all fwnode node properties
> * @fwnode: pointer to the endpoint's fwnode handle
> @@ -187,17 +212,28 @@ int v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode,
>
> fwnode_property_read_u32(fwnode, "bus-type", &bus_type);
>
> - rval = v4l2_fwnode_endpoint_parse_csi2_bus(fwnode, vep);
> - if (rval)
> - return rval;
> - /*
> - * Parse the parallel video bus properties only if none
> - * of the MIPI CSI-2 specific properties were found.
> - */
> - if (vep->bus.mipi_csi2.flags == 0)
> - v4l2_fwnode_endpoint_parse_parallel_bus(fwnode, vep);
> -
> - return 0;
> + switch (bus_type) {
> + case V4L2_FWNODE_BUS_TYPE_GUESS:
> + rval = v4l2_fwnode_endpoint_parse_csi2_bus(fwnode, vep);
> + if (rval)
> + return rval;
> + /*
> + * Parse the parallel video bus properties only if none
> + * of the MIPI CSI-2 specific properties were found.
> + */
> + if (vep->bus.mipi_csi2.flags == 0)
> + v4l2_fwnode_endpoint_parse_parallel_bus(fwnode, vep);
> +
> + return 0;
> + case V4L2_FWNODE_BUS_TYPE_CCP2:
> + case V4L2_FWNODE_BUS_TYPE_CSI1:
> + v4l2_fwnode_endpoint_parse_csi1_bus(fwnode, vep, bus_type);
> +
> + return 0;
> + default:
> + pr_warn("unsupported bus type %u\n", bus_type);
> + return -EINVAL;
> + }
> }
> EXPORT_SYMBOL_GPL(v4l2_fwnode_endpoint_parse);
>
> diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
> index ecc1233a873e..29ae22bbbbaf 100644
> --- a/include/media/v4l2-fwnode.h
> +++ b/include/media/v4l2-fwnode.h
> @@ -56,6 +56,24 @@ struct v4l2_fwnode_bus_parallel {
> };
>
> /**
> + * struct v4l2_fwnode_bus_mipi_csi1 - CSI-1/CCP2 data bus structure
> + * @clock_inv: polarity of clock/strobe signal
> + * false - not inverted, true - inverted
> + * @strobe: false - data/clock, true - data/strobe
> + * @lane_polarity: the polarities of the clock (index 0) and data lanes
> + index (1)
> + * @data_lane: the number of the data lane
> + * @clock_lane: the number of the clock lane
> + */
> +struct v4l2_fwnode_bus_mipi_csi1 {
> + bool clock_inv;
> + bool strobe;
> + bool lane_polarity[2];
> + unsigned char data_lane;
> + unsigned char clock_lane;
> +};
> +
> +/**
> * struct v4l2_fwnode_endpoint - the endpoint data structure
> * @base: fwnode endpoint of the v4l2_fwnode
> * @bus_type: bus type
> @@ -72,6 +90,7 @@ struct v4l2_fwnode_endpoint {
> enum v4l2_mbus_type bus_type;
> union {
> struct v4l2_fwnode_bus_parallel parallel;
> + struct v4l2_fwnode_bus_mipi_csi1 mipi_csi1;
> struct v4l2_fwnode_bus_mipi_csi2 mipi_csi2;
> } bus;
> u64 *link_frequencies;
> diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h
> index 34cc99e093ef..315c167a95dc 100644
> --- a/include/media/v4l2-mediabus.h
> +++ b/include/media/v4l2-mediabus.h
> @@ -69,11 +69,15 @@
> * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
> * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
> * also be used for BT.1120
> + * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface
> + * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2)
> * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface
> */
> enum v4l2_mbus_type {
> V4L2_MBUS_PARALLEL,
> V4L2_MBUS_BT656,
> + V4L2_MBUS_CSI1,
> + V4L2_MBUS_CCP2,
> V4L2_MBUS_CSI2,
> };
>
> --
> 2.11.0
>
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