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/mux/adg792a.c | 153 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 drivers/mux/adg792a.c (limited to 'drivers/mux/adg792a.c') diff --git a/drivers/mux/adg792a.c b/drivers/mux/adg792a.c new file mode 100644 index 000000000..e8fc2fc1a --- /dev/null +++ b/drivers/mux/adg792a.c @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Multiplexer driver for Analog Devices ADG792A/G Triple 4:1 mux + * + * Copyright (C) 2017 Axentia Technologies AB + * + * Author: Peter Rosin + */ + +#include +#include +#include +#include +#include + +#define ADG792A_LDSW BIT(0) +#define ADG792A_RESETB BIT(1) +#define ADG792A_DISABLE(mux) (0x50 | (mux)) +#define ADG792A_DISABLE_ALL (0x5f) +#define ADG792A_MUX(mux, state) (0xc0 | (((mux) + 1) << 2) | (state)) +#define ADG792A_MUX_ALL(state) (0xc0 | (state)) + +static int adg792a_write_cmd(struct i2c_client *i2c, u8 cmd, int reset) +{ + u8 data = ADG792A_RESETB | ADG792A_LDSW; + + /* ADG792A_RESETB is active low, the chip resets when it is zero. */ + if (reset) + data &= ~ADG792A_RESETB; + + return i2c_smbus_write_byte_data(i2c, cmd, data); +} + +static int adg792a_set(struct mux_control *mux, int state) +{ + struct i2c_client *i2c = to_i2c_client(mux->chip->dev.parent); + u8 cmd; + + if (mux->chip->controllers == 1) { + /* parallel mux controller operation */ + if (state == MUX_IDLE_DISCONNECT) + cmd = ADG792A_DISABLE_ALL; + else + cmd = ADG792A_MUX_ALL(state); + } else { + unsigned int controller = mux_control_get_index(mux); + + if (state == MUX_IDLE_DISCONNECT) + cmd = ADG792A_DISABLE(controller); + else + cmd = ADG792A_MUX(controller, state); + } + + return adg792a_write_cmd(i2c, cmd, 0); +} + +static const struct mux_control_ops adg792a_ops = { + .set = adg792a_set, +}; + +static int adg792a_probe(struct i2c_client *i2c) +{ + struct device *dev = &i2c->dev; + struct mux_chip *mux_chip; + s32 idle_state[3]; + u32 cells; + int ret; + int i; + + if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + ret = device_property_read_u32(dev, "#mux-control-cells", &cells); + if (ret < 0) + return ret; + if (cells >= 2) + return -EINVAL; + + mux_chip = devm_mux_chip_alloc(dev, cells ? 3 : 1, 0); + if (IS_ERR(mux_chip)) + return PTR_ERR(mux_chip); + + mux_chip->ops = &adg792a_ops; + + ret = adg792a_write_cmd(i2c, ADG792A_DISABLE_ALL, 1); + if (ret < 0) + return ret; + + ret = device_property_read_u32_array(dev, "idle-state", + (u32 *)idle_state, + mux_chip->controllers); + if (ret < 0) { + idle_state[0] = MUX_IDLE_AS_IS; + idle_state[1] = MUX_IDLE_AS_IS; + idle_state[2] = MUX_IDLE_AS_IS; + } + + for (i = 0; i < mux_chip->controllers; ++i) { + struct mux_control *mux = &mux_chip->mux[i]; + + mux->states = 4; + + switch (idle_state[i]) { + case MUX_IDLE_DISCONNECT: + case MUX_IDLE_AS_IS: + case 0 ... 4: + mux->idle_state = idle_state[i]; + break; + default: + dev_err(dev, "invalid idle-state %d\n", idle_state[i]); + return -EINVAL; + } + } + + ret = devm_mux_chip_register(dev, mux_chip); + if (ret < 0) + return ret; + + if (cells) + dev_info(dev, "3x single pole quadruple throw muxes registered\n"); + else + dev_info(dev, "triple pole quadruple throw mux registered\n"); + + return 0; +} + +static const struct i2c_device_id adg792a_id[] = { + { .name = "adg792a", }, + { .name = "adg792g", }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adg792a_id); + +static const struct of_device_id adg792a_of_match[] = { + { .compatible = "adi,adg792a", }, + { .compatible = "adi,adg792g", }, + { } +}; +MODULE_DEVICE_TABLE(of, adg792a_of_match); + +static struct i2c_driver adg792a_driver = { + .driver = { + .name = "adg792a", + .of_match_table = of_match_ptr(adg792a_of_match), + }, + .probe_new = adg792a_probe, + .id_table = adg792a_id, +}; +module_i2c_driver(adg792a_driver); + +MODULE_DESCRIPTION("Analog Devices ADG792A/G Triple 4:1 mux driver"); +MODULE_AUTHOR("Peter Rosin "); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3