From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/dma/ti/dma-crossbar.c | 477 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 477 insertions(+) create mode 100644 drivers/dma/ti/dma-crossbar.c (limited to 'drivers/dma/ti/dma-crossbar.c') diff --git a/drivers/dma/ti/dma-crossbar.c b/drivers/dma/ti/dma-crossbar.c new file mode 100644 index 000000000..f744ddbbb --- /dev/null +++ b/drivers/dma/ti/dma-crossbar.c @@ -0,0 +1,477 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com + * Author: Peter Ujfalusi + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#define TI_XBAR_DRA7 0 +#define TI_XBAR_AM335X 1 +static const u32 ti_xbar_type[] = { + [TI_XBAR_DRA7] = TI_XBAR_DRA7, + [TI_XBAR_AM335X] = TI_XBAR_AM335X, +}; + +static const struct of_device_id ti_dma_xbar_match[] = { + { + .compatible = "ti,dra7-dma-crossbar", + .data = &ti_xbar_type[TI_XBAR_DRA7], + }, + { + .compatible = "ti,am335x-edma-crossbar", + .data = &ti_xbar_type[TI_XBAR_AM335X], + }, + {}, +}; + +/* Crossbar on AM335x/AM437x family */ +#define TI_AM335X_XBAR_LINES 64 + +struct ti_am335x_xbar_data { + void __iomem *iomem; + + struct dma_router dmarouter; + + u32 xbar_events; /* maximum number of events to select in xbar */ + u32 dma_requests; /* number of DMA requests on eDMA */ +}; + +struct ti_am335x_xbar_map { + u16 dma_line; + u8 mux_val; +}; + +static inline void ti_am335x_xbar_write(void __iomem *iomem, int event, u8 val) +{ + /* + * TPCC_EVT_MUX_60_63 register layout is different than the + * rest, in the sense, that event 63 is mapped to lowest byte + * and event 60 is mapped to highest, handle it separately. + */ + if (event >= 60 && event <= 63) + writeb_relaxed(val, iomem + (63 - event % 4)); + else + writeb_relaxed(val, iomem + event); +} + +static void ti_am335x_xbar_free(struct device *dev, void *route_data) +{ + struct ti_am335x_xbar_data *xbar = dev_get_drvdata(dev); + struct ti_am335x_xbar_map *map = route_data; + + dev_dbg(dev, "Unmapping XBAR event %u on channel %u\n", + map->mux_val, map->dma_line); + + ti_am335x_xbar_write(xbar->iomem, map->dma_line, 0); + kfree(map); +} + +static void *ti_am335x_xbar_route_allocate(struct of_phandle_args *dma_spec, + struct of_dma *ofdma) +{ + struct platform_device *pdev = of_find_device_by_node(ofdma->of_node); + struct ti_am335x_xbar_data *xbar = platform_get_drvdata(pdev); + struct ti_am335x_xbar_map *map; + + if (dma_spec->args_count != 3) + return ERR_PTR(-EINVAL); + + if (dma_spec->args[2] >= xbar->xbar_events) { + dev_err(&pdev->dev, "Invalid XBAR event number: %d\n", + dma_spec->args[2]); + return ERR_PTR(-EINVAL); + } + + if (dma_spec->args[0] >= xbar->dma_requests) { + dev_err(&pdev->dev, "Invalid DMA request line number: %d\n", + dma_spec->args[0]); + return ERR_PTR(-EINVAL); + } + + /* The of_node_put() will be done in the core for the node */ + dma_spec->np = of_parse_phandle(ofdma->of_node, "dma-masters", 0); + if (!dma_spec->np) { + dev_err(&pdev->dev, "Can't get DMA master\n"); + return ERR_PTR(-EINVAL); + } + + map = kzalloc(sizeof(*map), GFP_KERNEL); + if (!map) { + of_node_put(dma_spec->np); + return ERR_PTR(-ENOMEM); + } + + map->dma_line = (u16)dma_spec->args[0]; + map->mux_val = (u8)dma_spec->args[2]; + + dma_spec->args[2] = 0; + dma_spec->args_count = 2; + + dev_dbg(&pdev->dev, "Mapping XBAR event%u to DMA%u\n", + map->mux_val, map->dma_line); + + ti_am335x_xbar_write(xbar->iomem, map->dma_line, map->mux_val); + + return map; +} + +static const struct of_device_id ti_am335x_master_match[] __maybe_unused = { + { .compatible = "ti,edma3-tpcc", }, + {}, +}; + +static int ti_am335x_xbar_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + const struct of_device_id *match; + struct device_node *dma_node; + struct ti_am335x_xbar_data *xbar; + void __iomem *iomem; + int i, ret; + + if (!node) + return -ENODEV; + + xbar = devm_kzalloc(&pdev->dev, sizeof(*xbar), GFP_KERNEL); + if (!xbar) + return -ENOMEM; + + dma_node = of_parse_phandle(node, "dma-masters", 0); + if (!dma_node) { + dev_err(&pdev->dev, "Can't get DMA master node\n"); + return -ENODEV; + } + + match = of_match_node(ti_am335x_master_match, dma_node); + if (!match) { + dev_err(&pdev->dev, "DMA master is not supported\n"); + of_node_put(dma_node); + return -EINVAL; + } + + if (of_property_read_u32(dma_node, "dma-requests", + &xbar->dma_requests)) { + dev_info(&pdev->dev, + "Missing XBAR output information, using %u.\n", + TI_AM335X_XBAR_LINES); + xbar->dma_requests = TI_AM335X_XBAR_LINES; + } + of_node_put(dma_node); + + if (of_property_read_u32(node, "dma-requests", &xbar->xbar_events)) { + dev_info(&pdev->dev, + "Missing XBAR input information, using %u.\n", + TI_AM335X_XBAR_LINES); + xbar->xbar_events = TI_AM335X_XBAR_LINES; + } + + iomem = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(iomem)) + return PTR_ERR(iomem); + + xbar->iomem = iomem; + + xbar->dmarouter.dev = &pdev->dev; + xbar->dmarouter.route_free = ti_am335x_xbar_free; + + platform_set_drvdata(pdev, xbar); + + /* Reset the crossbar */ + for (i = 0; i < xbar->dma_requests; i++) + ti_am335x_xbar_write(xbar->iomem, i, 0); + + ret = of_dma_router_register(node, ti_am335x_xbar_route_allocate, + &xbar->dmarouter); + + return ret; +} + +/* Crossbar on DRA7xx family */ +#define TI_DRA7_XBAR_OUTPUTS 127 +#define TI_DRA7_XBAR_INPUTS 256 + +struct ti_dra7_xbar_data { + void __iomem *iomem; + + struct dma_router dmarouter; + struct mutex mutex; + unsigned long *dma_inuse; + + u16 safe_val; /* Value to rest the crossbar lines */ + u32 xbar_requests; /* number of DMA requests connected to XBAR */ + u32 dma_requests; /* number of DMA requests forwarded to DMA */ + u32 dma_offset; +}; + +struct ti_dra7_xbar_map { + u16 xbar_in; + int xbar_out; +}; + +static inline void ti_dra7_xbar_write(void __iomem *iomem, int xbar, u16 val) +{ + writew_relaxed(val, iomem + (xbar * 2)); +} + +static void ti_dra7_xbar_free(struct device *dev, void *route_data) +{ + struct ti_dra7_xbar_data *xbar = dev_get_drvdata(dev); + struct ti_dra7_xbar_map *map = route_data; + + dev_dbg(dev, "Unmapping XBAR%u (was routed to %d)\n", + map->xbar_in, map->xbar_out); + + ti_dra7_xbar_write(xbar->iomem, map->xbar_out, xbar->safe_val); + mutex_lock(&xbar->mutex); + clear_bit(map->xbar_out, xbar->dma_inuse); + mutex_unlock(&xbar->mutex); + kfree(map); +} + +static void *ti_dra7_xbar_route_allocate(struct of_phandle_args *dma_spec, + struct of_dma *ofdma) +{ + struct platform_device *pdev = of_find_device_by_node(ofdma->of_node); + struct ti_dra7_xbar_data *xbar = platform_get_drvdata(pdev); + struct ti_dra7_xbar_map *map; + + if (dma_spec->args[0] >= xbar->xbar_requests) { + dev_err(&pdev->dev, "Invalid XBAR request number: %d\n", + dma_spec->args[0]); + put_device(&pdev->dev); + return ERR_PTR(-EINVAL); + } + + /* The of_node_put() will be done in the core for the node */ + dma_spec->np = of_parse_phandle(ofdma->of_node, "dma-masters", 0); + if (!dma_spec->np) { + dev_err(&pdev->dev, "Can't get DMA master\n"); + put_device(&pdev->dev); + return ERR_PTR(-EINVAL); + } + + map = kzalloc(sizeof(*map), GFP_KERNEL); + if (!map) { + of_node_put(dma_spec->np); + put_device(&pdev->dev); + return ERR_PTR(-ENOMEM); + } + + mutex_lock(&xbar->mutex); + map->xbar_out = find_first_zero_bit(xbar->dma_inuse, + xbar->dma_requests); + if (map->xbar_out == xbar->dma_requests) { + mutex_unlock(&xbar->mutex); + dev_err(&pdev->dev, "Run out of free DMA requests\n"); + kfree(map); + of_node_put(dma_spec->np); + put_device(&pdev->dev); + return ERR_PTR(-ENOMEM); + } + set_bit(map->xbar_out, xbar->dma_inuse); + mutex_unlock(&xbar->mutex); + + map->xbar_in = (u16)dma_spec->args[0]; + + dma_spec->args[0] = map->xbar_out + xbar->dma_offset; + + dev_dbg(&pdev->dev, "Mapping XBAR%u to DMA%d\n", + map->xbar_in, map->xbar_out); + + ti_dra7_xbar_write(xbar->iomem, map->xbar_out, map->xbar_in); + + return map; +} + +#define TI_XBAR_EDMA_OFFSET 0 +#define TI_XBAR_SDMA_OFFSET 1 +static const u32 ti_dma_offset[] = { + [TI_XBAR_EDMA_OFFSET] = 0, + [TI_XBAR_SDMA_OFFSET] = 1, +}; + +static const struct of_device_id ti_dra7_master_match[] __maybe_unused = { + { + .compatible = "ti,omap4430-sdma", + .data = &ti_dma_offset[TI_XBAR_SDMA_OFFSET], + }, + { + .compatible = "ti,edma3", + .data = &ti_dma_offset[TI_XBAR_EDMA_OFFSET], + }, + { + .compatible = "ti,edma3-tpcc", + .data = &ti_dma_offset[TI_XBAR_EDMA_OFFSET], + }, + {}, +}; + +static inline void ti_dra7_xbar_reserve(int offset, int len, unsigned long *p) +{ + for (; len > 0; len--) + set_bit(offset + (len - 1), p); +} + +static int ti_dra7_xbar_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + const struct of_device_id *match; + struct device_node *dma_node; + struct ti_dra7_xbar_data *xbar; + struct property *prop; + u32 safe_val; + int sz; + void __iomem *iomem; + int i, ret; + + if (!node) + return -ENODEV; + + xbar = devm_kzalloc(&pdev->dev, sizeof(*xbar), GFP_KERNEL); + if (!xbar) + return -ENOMEM; + + dma_node = of_parse_phandle(node, "dma-masters", 0); + if (!dma_node) { + dev_err(&pdev->dev, "Can't get DMA master node\n"); + return -ENODEV; + } + + match = of_match_node(ti_dra7_master_match, dma_node); + if (!match) { + dev_err(&pdev->dev, "DMA master is not supported\n"); + of_node_put(dma_node); + return -EINVAL; + } + + if (of_property_read_u32(dma_node, "dma-requests", + &xbar->dma_requests)) { + dev_info(&pdev->dev, + "Missing XBAR output information, using %u.\n", + TI_DRA7_XBAR_OUTPUTS); + xbar->dma_requests = TI_DRA7_XBAR_OUTPUTS; + } + of_node_put(dma_node); + + xbar->dma_inuse = devm_kcalloc(&pdev->dev, + BITS_TO_LONGS(xbar->dma_requests), + sizeof(unsigned long), GFP_KERNEL); + if (!xbar->dma_inuse) + return -ENOMEM; + + if (of_property_read_u32(node, "dma-requests", &xbar->xbar_requests)) { + dev_info(&pdev->dev, + "Missing XBAR input information, using %u.\n", + TI_DRA7_XBAR_INPUTS); + xbar->xbar_requests = TI_DRA7_XBAR_INPUTS; + } + + if (!of_property_read_u32(node, "ti,dma-safe-map", &safe_val)) + xbar->safe_val = (u16)safe_val; + + + prop = of_find_property(node, "ti,reserved-dma-request-ranges", &sz); + if (prop) { + const char pname[] = "ti,reserved-dma-request-ranges"; + u32 (*rsv_events)[2]; + size_t nelm = sz / sizeof(*rsv_events); + int i; + + if (!nelm) + return -EINVAL; + + rsv_events = kcalloc(nelm, sizeof(*rsv_events), GFP_KERNEL); + if (!rsv_events) + return -ENOMEM; + + ret = of_property_read_u32_array(node, pname, (u32 *)rsv_events, + nelm * 2); + if (ret) { + kfree(rsv_events); + return ret; + } + + for (i = 0; i < nelm; i++) { + ti_dra7_xbar_reserve(rsv_events[i][0], rsv_events[i][1], + xbar->dma_inuse); + } + kfree(rsv_events); + } + + iomem = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(iomem)) + return PTR_ERR(iomem); + + xbar->iomem = iomem; + + xbar->dmarouter.dev = &pdev->dev; + xbar->dmarouter.route_free = ti_dra7_xbar_free; + xbar->dma_offset = *(u32 *)match->data; + + mutex_init(&xbar->mutex); + platform_set_drvdata(pdev, xbar); + + /* Reset the crossbar */ + for (i = 0; i < xbar->dma_requests; i++) { + if (!test_bit(i, xbar->dma_inuse)) + ti_dra7_xbar_write(xbar->iomem, i, xbar->safe_val); + } + + ret = of_dma_router_register(node, ti_dra7_xbar_route_allocate, + &xbar->dmarouter); + if (ret) { + /* Restore the defaults for the crossbar */ + for (i = 0; i < xbar->dma_requests; i++) { + if (!test_bit(i, xbar->dma_inuse)) + ti_dra7_xbar_write(xbar->iomem, i, i); + } + } + + return ret; +} + +static int ti_dma_xbar_probe(struct platform_device *pdev) +{ + const struct of_device_id *match; + int ret; + + match = of_match_node(ti_dma_xbar_match, pdev->dev.of_node); + if (unlikely(!match)) + return -EINVAL; + + switch (*(u32 *)match->data) { + case TI_XBAR_DRA7: + ret = ti_dra7_xbar_probe(pdev); + break; + case TI_XBAR_AM335X: + ret = ti_am335x_xbar_probe(pdev); + break; + default: + dev_err(&pdev->dev, "Unsupported crossbar\n"); + ret = -ENODEV; + break; + } + + return ret; +} + +static struct platform_driver ti_dma_xbar_driver = { + .driver = { + .name = "ti-dma-crossbar", + .of_match_table = ti_dma_xbar_match, + }, + .probe = ti_dma_xbar_probe, +}; + +static int omap_dmaxbar_init(void) +{ + return platform_driver_register(&ti_dma_xbar_driver); +} +arch_initcall(omap_dmaxbar_init); -- cgit v1.2.3