diff options
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-fwnode.c | 100 |
1 files changed, 80 insertions, 20 deletions
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c index f224b6c42c10..99dc0b6baaae 100644 --- a/drivers/media/v4l2-core/v4l2-fwnode.c +++ b/drivers/media/v4l2-core/v4l2-fwnode.c @@ -42,9 +42,66 @@ enum v4l2_fwnode_bus_type { NR_OF_V4L2_FWNODE_BUS_TYPE, }; +static const struct v4l2_fwnode_bus_conv { + enum v4l2_fwnode_bus_type fwnode_bus_type; + enum v4l2_mbus_type mbus_type; + const char *name; +} busses[] = { + { + V4L2_FWNODE_BUS_TYPE_GUESS, + V4L2_MBUS_UNKNOWN, + "not specified", + }, { + V4L2_FWNODE_BUS_TYPE_CSI2_CPHY, + V4L2_MBUS_CSI2_CPHY, + "MIPI CSI-2 C-PHY", + }, { + V4L2_FWNODE_BUS_TYPE_CSI1, + V4L2_MBUS_CSI1, + "MIPI CSI-1", + }, { + V4L2_FWNODE_BUS_TYPE_CCP2, + V4L2_MBUS_CCP2, + "compact camera port 2", + }, { + V4L2_FWNODE_BUS_TYPE_CSI2_DPHY, + V4L2_MBUS_CSI2_DPHY, + "MIPI CSI-2 D-PHY", + }, { + V4L2_FWNODE_BUS_TYPE_PARALLEL, + V4L2_MBUS_PARALLEL, + "parallel", + }, { + V4L2_FWNODE_BUS_TYPE_BT656, + V4L2_MBUS_BT656, + "Bt.656", + } +}; + +static const struct v4l2_fwnode_bus_conv * +get_v4l2_fwnode_bus_conv_by_fwnode_bus(enum v4l2_fwnode_bus_type type) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(busses); i++) + if (busses[i].fwnode_bus_type == type) + return &busses[i]; + + return NULL; +} + +static enum v4l2_mbus_type +v4l2_fwnode_bus_type_to_mbus(enum v4l2_fwnode_bus_type type) +{ + const struct v4l2_fwnode_bus_conv *conv = + get_v4l2_fwnode_bus_conv_by_fwnode_bus(type); + + return conv ? conv->mbus_type : V4L2_MBUS_UNKNOWN; +} + static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode, struct v4l2_fwnode_endpoint *vep, - enum v4l2_fwnode_bus_type bus_type) + enum v4l2_mbus_type bus_type) { struct v4l2_fwnode_bus_mipi_csi2 *bus = &vep->bus.mipi_csi2; bool have_clk_lane = false, have_data_lanes = false, @@ -58,7 +115,7 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode, u32 v; int rval; - if (bus_type == V4L2_FWNODE_BUS_TYPE_CSI2_DPHY) { + if (bus_type == V4L2_MBUS_CSI2_DPHY) { use_default_lane_mapping = true; num_data_lanes = min_t(u32, bus->num_data_lanes, @@ -134,7 +191,7 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode, flags |= V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; } - if (bus_type == V4L2_FWNODE_BUS_TYPE_CSI2_DPHY || lanes_used || + if (bus_type == V4L2_MBUS_CSI2_DPHY || lanes_used || have_clk_lane || (flags & ~V4L2_MBUS_CSI2_CONTINUOUS_CLOCK)) { bus->flags = flags; vep->bus_type = V4L2_MBUS_CSI2_DPHY; @@ -177,7 +234,7 @@ static int v4l2_fwnode_endpoint_parse_csi2_bus(struct fwnode_handle *fwnode, static void v4l2_fwnode_endpoint_parse_parallel_bus( struct fwnode_handle *fwnode, struct v4l2_fwnode_endpoint *vep, - enum v4l2_fwnode_bus_type bus_type) + enum v4l2_mbus_type bus_type) { struct v4l2_fwnode_bus_parallel *bus = &vep->bus.parallel; unsigned int flags = 0; @@ -250,11 +307,11 @@ static void v4l2_fwnode_endpoint_parse_parallel_bus( else vep->bus_type = V4L2_MBUS_BT656; break; - case V4L2_FWNODE_BUS_TYPE_PARALLEL: + case V4L2_MBUS_PARALLEL: vep->bus_type = V4L2_MBUS_PARALLEL; bus->flags = flags; break; - case V4L2_FWNODE_BUS_TYPE_BT656: + case V4L2_MBUS_BT656: vep->bus_type = V4L2_MBUS_BT656; bus->flags = flags & ~PARALLEL_MBUS_FLAGS; break; @@ -264,7 +321,7 @@ static void v4l2_fwnode_endpoint_parse_parallel_bus( static void v4l2_fwnode_endpoint_parse_csi1_bus(struct fwnode_handle *fwnode, struct v4l2_fwnode_endpoint *vep, - enum v4l2_fwnode_bus_type bus_type) + enum v4l2_mbus_type bus_type) { struct v4l2_fwnode_bus_mipi_csi1 *bus = &vep->bus.mipi_csi1; u32 v; @@ -289,7 +346,7 @@ v4l2_fwnode_endpoint_parse_csi1_bus(struct fwnode_handle *fwnode, pr_debug("clock-lanes %u\n", v); } - if (bus_type == V4L2_FWNODE_BUS_TYPE_CCP2) + if (bus_type == V4L2_MBUS_CCP2) vep->bus_type = V4L2_MBUS_CCP2; else vep->bus_type = V4L2_MBUS_CSI1; @@ -299,6 +356,7 @@ static int __v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode, struct v4l2_fwnode_endpoint *vep) { u32 bus_type = 0; + enum v4l2_mbus_type mbus_type; int rval; if (vep->bus_type == V4L2_MBUS_UNKNOWN) { @@ -317,10 +375,12 @@ static int __v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode, fwnode_property_read_u32(fwnode, "bus-type", &bus_type); - switch (bus_type) { - case V4L2_FWNODE_BUS_TYPE_GUESS: + mbus_type = v4l2_fwnode_bus_type_to_mbus(bus_type); + + switch (mbus_type) { + case V4L2_MBUS_UNKNOWN: rval = v4l2_fwnode_endpoint_parse_csi2_bus(fwnode, vep, - bus_type); + mbus_type); if (rval) return rval; @@ -329,26 +389,26 @@ static int __v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode, fwnode, vep, V4L2_MBUS_UNKNOWN); break; - case V4L2_FWNODE_BUS_TYPE_CCP2: - case V4L2_FWNODE_BUS_TYPE_CSI1: - v4l2_fwnode_endpoint_parse_csi1_bus(fwnode, vep, bus_type); + case V4L2_MBUS_CCP2: + case V4L2_MBUS_CSI1: + v4l2_fwnode_endpoint_parse_csi1_bus(fwnode, vep, mbus_type); break; - case V4L2_FWNODE_BUS_TYPE_CSI2_DPHY: + case V4L2_MBUS_CSI2_DPHY: vep->bus_type = V4L2_MBUS_CSI2_DPHY; rval = v4l2_fwnode_endpoint_parse_csi2_bus(fwnode, vep, - bus_type); + mbus_type); if (rval) return rval; break; - case V4L2_FWNODE_BUS_TYPE_PARALLEL: - case V4L2_FWNODE_BUS_TYPE_BT656: - v4l2_fwnode_endpoint_parse_parallel_bus(fwnode, vep, bus_type); + case V4L2_MBUS_PARALLEL: + case V4L2_MBUS_BT656: + v4l2_fwnode_endpoint_parse_parallel_bus(fwnode, vep, mbus_type); break; default: - pr_warn("unsupported bus type %u\n", bus_type); + pr_warn("unsupported bus type %u\n", mbus_type); return -EINVAL; } |