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/input/misc/max77693-haptic.c | 427 +++++++++++++++++++++++++++++++++++ 1 file changed, 427 insertions(+) create mode 100644 drivers/input/misc/max77693-haptic.c (limited to 'drivers/input/misc/max77693-haptic.c') diff --git a/drivers/input/misc/max77693-haptic.c b/drivers/input/misc/max77693-haptic.c new file mode 100644 index 000000000..4369d3c04 --- /dev/null +++ b/drivers/input/misc/max77693-haptic.c @@ -0,0 +1,427 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MAXIM MAX77693/MAX77843 Haptic device driver + * + * Copyright (C) 2014,2015 Samsung Electronics + * Jaewon Kim + * Krzysztof Kozlowski + * + * This program is not provided / owned by Maxim Integrated Products. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MAX_MAGNITUDE_SHIFT 16 + +enum max77693_haptic_motor_type { + MAX77693_HAPTIC_ERM = 0, + MAX77693_HAPTIC_LRA, +}; + +enum max77693_haptic_pulse_mode { + MAX77693_HAPTIC_EXTERNAL_MODE = 0, + MAX77693_HAPTIC_INTERNAL_MODE, +}; + +enum max77693_haptic_pwm_divisor { + MAX77693_HAPTIC_PWM_DIVISOR_32 = 0, + MAX77693_HAPTIC_PWM_DIVISOR_64, + MAX77693_HAPTIC_PWM_DIVISOR_128, + MAX77693_HAPTIC_PWM_DIVISOR_256, +}; + +struct max77693_haptic { + enum max77693_types dev_type; + + struct regmap *regmap_pmic; + struct regmap *regmap_haptic; + struct device *dev; + struct input_dev *input_dev; + struct pwm_device *pwm_dev; + struct regulator *motor_reg; + + bool enabled; + bool suspend_state; + unsigned int magnitude; + unsigned int pwm_duty; + enum max77693_haptic_motor_type type; + enum max77693_haptic_pulse_mode mode; + + struct work_struct work; +}; + +static int max77693_haptic_set_duty_cycle(struct max77693_haptic *haptic) +{ + struct pwm_args pargs; + int delta; + int error; + + pwm_get_args(haptic->pwm_dev, &pargs); + delta = (pargs.period + haptic->pwm_duty) / 2; + error = pwm_config(haptic->pwm_dev, delta, pargs.period); + if (error) { + dev_err(haptic->dev, "failed to configure pwm: %d\n", error); + return error; + } + + return 0; +} + +static int max77843_haptic_bias(struct max77693_haptic *haptic, bool on) +{ + int error; + + if (haptic->dev_type != TYPE_MAX77843) + return 0; + + error = regmap_update_bits(haptic->regmap_haptic, + MAX77843_SYS_REG_MAINCTRL1, + MAX77843_MAINCTRL1_BIASEN_MASK, + on << MAINCTRL1_BIASEN_SHIFT); + if (error) { + dev_err(haptic->dev, "failed to %s bias: %d\n", + on ? "enable" : "disable", error); + return error; + } + + return 0; +} + +static int max77693_haptic_configure(struct max77693_haptic *haptic, + bool enable) +{ + unsigned int value, config_reg; + int error; + + switch (haptic->dev_type) { + case TYPE_MAX77693: + value = ((haptic->type << MAX77693_CONFIG2_MODE) | + (enable << MAX77693_CONFIG2_MEN) | + (haptic->mode << MAX77693_CONFIG2_HTYP) | + MAX77693_HAPTIC_PWM_DIVISOR_128); + config_reg = MAX77693_HAPTIC_REG_CONFIG2; + break; + case TYPE_MAX77843: + value = (haptic->type << MCONFIG_MODE_SHIFT) | + (enable << MCONFIG_MEN_SHIFT) | + MAX77693_HAPTIC_PWM_DIVISOR_128; + config_reg = MAX77843_HAP_REG_MCONFIG; + break; + default: + return -EINVAL; + } + + error = regmap_write(haptic->regmap_haptic, + config_reg, value); + if (error) { + dev_err(haptic->dev, + "failed to update haptic config: %d\n", error); + return error; + } + + return 0; +} + +static int max77693_haptic_lowsys(struct max77693_haptic *haptic, bool enable) +{ + int error; + + if (haptic->dev_type != TYPE_MAX77693) + return 0; + + error = regmap_update_bits(haptic->regmap_pmic, + MAX77693_PMIC_REG_LSCNFG, + MAX77693_PMIC_LOW_SYS_MASK, + enable << MAX77693_PMIC_LOW_SYS_SHIFT); + if (error) { + dev_err(haptic->dev, "cannot update pmic regmap: %d\n", error); + return error; + } + + return 0; +} + +static void max77693_haptic_enable(struct max77693_haptic *haptic) +{ + int error; + + if (haptic->enabled) + return; + + error = pwm_enable(haptic->pwm_dev); + if (error) { + dev_err(haptic->dev, + "failed to enable haptic pwm device: %d\n", error); + return; + } + + error = max77693_haptic_lowsys(haptic, true); + if (error) + goto err_enable_lowsys; + + error = max77693_haptic_configure(haptic, true); + if (error) + goto err_enable_config; + + haptic->enabled = true; + + return; + +err_enable_config: + max77693_haptic_lowsys(haptic, false); +err_enable_lowsys: + pwm_disable(haptic->pwm_dev); +} + +static void max77693_haptic_disable(struct max77693_haptic *haptic) +{ + int error; + + if (!haptic->enabled) + return; + + error = max77693_haptic_configure(haptic, false); + if (error) + return; + + error = max77693_haptic_lowsys(haptic, false); + if (error) + goto err_disable_lowsys; + + pwm_disable(haptic->pwm_dev); + haptic->enabled = false; + + return; + +err_disable_lowsys: + max77693_haptic_configure(haptic, true); +} + +static void max77693_haptic_play_work(struct work_struct *work) +{ + struct max77693_haptic *haptic = + container_of(work, struct max77693_haptic, work); + int error; + + error = max77693_haptic_set_duty_cycle(haptic); + if (error) { + dev_err(haptic->dev, "failed to set duty cycle: %d\n", error); + return; + } + + if (haptic->magnitude) + max77693_haptic_enable(haptic); + else + max77693_haptic_disable(haptic); +} + +static int max77693_haptic_play_effect(struct input_dev *dev, void *data, + struct ff_effect *effect) +{ + struct max77693_haptic *haptic = input_get_drvdata(dev); + struct pwm_args pargs; + u64 period_mag_multi; + + haptic->magnitude = effect->u.rumble.strong_magnitude; + if (!haptic->magnitude) + haptic->magnitude = effect->u.rumble.weak_magnitude; + + /* + * The magnitude comes from force-feedback interface. + * The formula to convert magnitude to pwm_duty as follows: + * - pwm_duty = (magnitude * pwm_period) / MAX_MAGNITUDE(0xFFFF) + */ + pwm_get_args(haptic->pwm_dev, &pargs); + period_mag_multi = (u64)pargs.period * haptic->magnitude; + haptic->pwm_duty = (unsigned int)(period_mag_multi >> + MAX_MAGNITUDE_SHIFT); + + schedule_work(&haptic->work); + + return 0; +} + +static int max77693_haptic_open(struct input_dev *dev) +{ + struct max77693_haptic *haptic = input_get_drvdata(dev); + int error; + + error = max77843_haptic_bias(haptic, true); + if (error) + return error; + + error = regulator_enable(haptic->motor_reg); + if (error) { + dev_err(haptic->dev, + "failed to enable regulator: %d\n", error); + return error; + } + + return 0; +} + +static void max77693_haptic_close(struct input_dev *dev) +{ + struct max77693_haptic *haptic = input_get_drvdata(dev); + int error; + + cancel_work_sync(&haptic->work); + max77693_haptic_disable(haptic); + + error = regulator_disable(haptic->motor_reg); + if (error) + dev_err(haptic->dev, + "failed to disable regulator: %d\n", error); + + max77843_haptic_bias(haptic, false); +} + +static int max77693_haptic_probe(struct platform_device *pdev) +{ + struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); + struct max77693_haptic *haptic; + int error; + + haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL); + if (!haptic) + return -ENOMEM; + + haptic->regmap_pmic = max77693->regmap; + haptic->dev = &pdev->dev; + haptic->type = MAX77693_HAPTIC_LRA; + haptic->mode = MAX77693_HAPTIC_EXTERNAL_MODE; + haptic->suspend_state = false; + + /* Variant-specific init */ + haptic->dev_type = platform_get_device_id(pdev)->driver_data; + switch (haptic->dev_type) { + case TYPE_MAX77693: + haptic->regmap_haptic = max77693->regmap_haptic; + break; + case TYPE_MAX77843: + haptic->regmap_haptic = max77693->regmap; + break; + default: + dev_err(&pdev->dev, "unsupported device type: %u\n", + haptic->dev_type); + return -EINVAL; + } + + INIT_WORK(&haptic->work, max77693_haptic_play_work); + + /* Get pwm and regulatot for haptic device */ + haptic->pwm_dev = devm_pwm_get(&pdev->dev, NULL); + if (IS_ERR(haptic->pwm_dev)) { + dev_err(&pdev->dev, "failed to get pwm device\n"); + return PTR_ERR(haptic->pwm_dev); + } + + /* + * FIXME: pwm_apply_args() should be removed when switching to the + * atomic PWM API. + */ + pwm_apply_args(haptic->pwm_dev); + + haptic->motor_reg = devm_regulator_get(&pdev->dev, "haptic"); + if (IS_ERR(haptic->motor_reg)) { + dev_err(&pdev->dev, "failed to get regulator\n"); + return PTR_ERR(haptic->motor_reg); + } + + /* Initialize input device for haptic device */ + haptic->input_dev = devm_input_allocate_device(&pdev->dev); + if (!haptic->input_dev) { + dev_err(&pdev->dev, "failed to allocate input device\n"); + return -ENOMEM; + } + + haptic->input_dev->name = "max77693-haptic"; + haptic->input_dev->id.version = 1; + haptic->input_dev->dev.parent = &pdev->dev; + haptic->input_dev->open = max77693_haptic_open; + haptic->input_dev->close = max77693_haptic_close; + input_set_drvdata(haptic->input_dev, haptic); + input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE); + + error = input_ff_create_memless(haptic->input_dev, NULL, + max77693_haptic_play_effect); + if (error) { + dev_err(&pdev->dev, "failed to create force-feedback\n"); + return error; + } + + error = input_register_device(haptic->input_dev); + if (error) { + dev_err(&pdev->dev, "failed to register input device\n"); + return error; + } + + platform_set_drvdata(pdev, haptic); + + return 0; +} + +static int __maybe_unused max77693_haptic_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct max77693_haptic *haptic = platform_get_drvdata(pdev); + + if (haptic->enabled) { + max77693_haptic_disable(haptic); + haptic->suspend_state = true; + } + + return 0; +} + +static int __maybe_unused max77693_haptic_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct max77693_haptic *haptic = platform_get_drvdata(pdev); + + if (haptic->suspend_state) { + max77693_haptic_enable(haptic); + haptic->suspend_state = false; + } + + return 0; +} + +static SIMPLE_DEV_PM_OPS(max77693_haptic_pm_ops, + max77693_haptic_suspend, max77693_haptic_resume); + +static const struct platform_device_id max77693_haptic_id[] = { + { "max77693-haptic", TYPE_MAX77693 }, + { "max77843-haptic", TYPE_MAX77843 }, + {}, +}; +MODULE_DEVICE_TABLE(platform, max77693_haptic_id); + +static struct platform_driver max77693_haptic_driver = { + .driver = { + .name = "max77693-haptic", + .pm = &max77693_haptic_pm_ops, + }, + .probe = max77693_haptic_probe, + .id_table = max77693_haptic_id, +}; +module_platform_driver(max77693_haptic_driver); + +MODULE_AUTHOR("Jaewon Kim "); +MODULE_AUTHOR("Krzysztof Kozlowski "); +MODULE_DESCRIPTION("MAXIM 77693/77843 Haptic driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3