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/gpio/gpio-wm831x.c | 304 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 304 insertions(+) create mode 100644 drivers/gpio/gpio-wm831x.c (limited to 'drivers/gpio/gpio-wm831x.c') diff --git a/drivers/gpio/gpio-wm831x.c b/drivers/gpio/gpio-wm831x.c new file mode 100644 index 000000000..7eaf8a286 --- /dev/null +++ b/drivers/gpio/gpio-wm831x.c @@ -0,0 +1,304 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * gpiolib support for Wolfson WM831x PMICs + * + * Copyright 2009 Wolfson Microelectronics PLC. + * + * Author: Mark Brown + * + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +struct wm831x_gpio { + struct wm831x *wm831x; + struct gpio_chip gpio_chip; +}; + +static int wm831x_gpio_direction_in(struct gpio_chip *chip, unsigned offset) +{ + struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip); + struct wm831x *wm831x = wm831x_gpio->wm831x; + int val = WM831X_GPN_DIR; + + if (wm831x->has_gpio_ena) + val |= WM831X_GPN_TRI; + + return wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + offset, + WM831X_GPN_DIR | WM831X_GPN_TRI | + WM831X_GPN_FN_MASK, val); +} + +static int wm831x_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip); + struct wm831x *wm831x = wm831x_gpio->wm831x; + int ret; + + ret = wm831x_reg_read(wm831x, WM831X_GPIO_LEVEL); + if (ret < 0) + return ret; + + if (ret & 1 << offset) + return 1; + else + return 0; +} + +static void wm831x_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip); + struct wm831x *wm831x = wm831x_gpio->wm831x; + + wm831x_set_bits(wm831x, WM831X_GPIO_LEVEL, 1 << offset, + value << offset); +} + +static int wm831x_gpio_direction_out(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip); + struct wm831x *wm831x = wm831x_gpio->wm831x; + int val = 0; + int ret; + + if (wm831x->has_gpio_ena) + val |= WM831X_GPN_TRI; + + ret = wm831x_set_bits(wm831x, WM831X_GPIO1_CONTROL + offset, + WM831X_GPN_DIR | WM831X_GPN_TRI | + WM831X_GPN_FN_MASK, val); + if (ret < 0) + return ret; + + /* Can only set GPIO state once it's in output mode */ + wm831x_gpio_set(chip, offset, value); + + return 0; +} + +static int wm831x_gpio_to_irq(struct gpio_chip *chip, unsigned offset) +{ + struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip); + struct wm831x *wm831x = wm831x_gpio->wm831x; + + return irq_create_mapping(wm831x->irq_domain, + WM831X_IRQ_GPIO_1 + offset); +} + +static int wm831x_gpio_set_debounce(struct wm831x *wm831x, unsigned offset, + unsigned debounce) +{ + int reg = WM831X_GPIO1_CONTROL + offset; + int ret, fn; + + ret = wm831x_reg_read(wm831x, reg); + if (ret < 0) + return ret; + + switch (ret & WM831X_GPN_FN_MASK) { + case 0: + case 1: + break; + default: + /* Not in GPIO mode */ + return -EBUSY; + } + + if (debounce >= 32 && debounce <= 64) + fn = 0; + else if (debounce >= 4000 && debounce <= 8000) + fn = 1; + else + return -EINVAL; + + return wm831x_set_bits(wm831x, reg, WM831X_GPN_FN_MASK, fn); +} + +static int wm831x_set_config(struct gpio_chip *chip, unsigned int offset, + unsigned long config) +{ + struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip); + struct wm831x *wm831x = wm831x_gpio->wm831x; + int reg = WM831X_GPIO1_CONTROL + offset; + + switch (pinconf_to_config_param(config)) { + case PIN_CONFIG_DRIVE_OPEN_DRAIN: + return wm831x_set_bits(wm831x, reg, + WM831X_GPN_OD_MASK, WM831X_GPN_OD); + case PIN_CONFIG_DRIVE_PUSH_PULL: + return wm831x_set_bits(wm831x, reg, + WM831X_GPN_OD_MASK, 0); + case PIN_CONFIG_INPUT_DEBOUNCE: + return wm831x_gpio_set_debounce(wm831x, offset, + pinconf_to_config_argument(config)); + default: + break; + } + + return -ENOTSUPP; +} + +#ifdef CONFIG_DEBUG_FS +static void wm831x_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) +{ + struct wm831x_gpio *wm831x_gpio = gpiochip_get_data(chip); + struct wm831x *wm831x = wm831x_gpio->wm831x; + int i, tristated; + + for (i = 0; i < chip->ngpio; i++) { + int gpio = i + chip->base; + int reg; + const char *label, *pull, *powerdomain; + + /* We report the GPIO even if it's not requested since + * we're also reporting things like alternate + * functions which apply even when the GPIO is not in + * use as a GPIO. + */ + label = gpiochip_is_requested(chip, i); + if (!label) + label = "Unrequested"; + + seq_printf(s, " gpio-%-3d (%-20.20s) ", gpio, label); + + reg = wm831x_reg_read(wm831x, WM831X_GPIO1_CONTROL + i); + if (reg < 0) { + dev_err(wm831x->dev, + "GPIO control %d read failed: %d\n", + gpio, reg); + seq_putc(s, '\n'); + continue; + } + + switch (reg & WM831X_GPN_PULL_MASK) { + case WM831X_GPIO_PULL_NONE: + pull = "nopull"; + break; + case WM831X_GPIO_PULL_DOWN: + pull = "pulldown"; + break; + case WM831X_GPIO_PULL_UP: + pull = "pullup"; + break; + default: + pull = "INVALID PULL"; + break; + } + + switch (i + 1) { + case 1 ... 3: + case 7 ... 9: + if (reg & WM831X_GPN_PWR_DOM) + powerdomain = "VPMIC"; + else + powerdomain = "DBVDD"; + break; + + case 4 ... 6: + case 10 ... 12: + if (reg & WM831X_GPN_PWR_DOM) + powerdomain = "SYSVDD"; + else + powerdomain = "DBVDD"; + break; + + case 13 ... 16: + powerdomain = "TPVDD"; + break; + + default: + BUG(); + break; + } + + tristated = reg & WM831X_GPN_TRI; + if (wm831x->has_gpio_ena) + tristated = !tristated; + + seq_printf(s, " %s %s %s %s%s\n" + " %s%s (0x%4x)\n", + reg & WM831X_GPN_DIR ? "in" : "out", + wm831x_gpio_get(chip, i) ? "high" : "low", + pull, + powerdomain, + reg & WM831X_GPN_POL ? "" : " inverted", + reg & WM831X_GPN_OD ? "open-drain" : "push-pull", + tristated ? " tristated" : "", + reg); + } +} +#else +#define wm831x_gpio_dbg_show NULL +#endif + +static const struct gpio_chip template_chip = { + .label = "wm831x", + .owner = THIS_MODULE, + .direction_input = wm831x_gpio_direction_in, + .get = wm831x_gpio_get, + .direction_output = wm831x_gpio_direction_out, + .set = wm831x_gpio_set, + .to_irq = wm831x_gpio_to_irq, + .set_config = wm831x_set_config, + .dbg_show = wm831x_gpio_dbg_show, + .can_sleep = true, +}; + +static int wm831x_gpio_probe(struct platform_device *pdev) +{ + struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); + struct wm831x_pdata *pdata = &wm831x->pdata; + struct wm831x_gpio *wm831x_gpio; + + device_set_node(&pdev->dev, dev_fwnode(pdev->dev.parent)); + + wm831x_gpio = devm_kzalloc(&pdev->dev, sizeof(*wm831x_gpio), + GFP_KERNEL); + if (wm831x_gpio == NULL) + return -ENOMEM; + + wm831x_gpio->wm831x = wm831x; + wm831x_gpio->gpio_chip = template_chip; + wm831x_gpio->gpio_chip.ngpio = wm831x->num_gpio; + wm831x_gpio->gpio_chip.parent = &pdev->dev; + if (pdata && pdata->gpio_base) + wm831x_gpio->gpio_chip.base = pdata->gpio_base; + else + wm831x_gpio->gpio_chip.base = -1; + + return devm_gpiochip_add_data(&pdev->dev, &wm831x_gpio->gpio_chip, wm831x_gpio); +} + +static struct platform_driver wm831x_gpio_driver = { + .driver.name = "wm831x-gpio", + .probe = wm831x_gpio_probe, +}; + +static int __init wm831x_gpio_init(void) +{ + return platform_driver_register(&wm831x_gpio_driver); +} +subsys_initcall(wm831x_gpio_init); + +static void __exit wm831x_gpio_exit(void) +{ + platform_driver_unregister(&wm831x_gpio_driver); +} +module_exit(wm831x_gpio_exit); + +MODULE_AUTHOR("Mark Brown "); +MODULE_DESCRIPTION("GPIO interface for WM831x PMICs"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:wm831x-gpio"); -- cgit v1.2.3