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/iio/temperature/hid-sensor-temperature.c | 295 +++++++++++++++++++++++ 1 file changed, 295 insertions(+) create mode 100644 drivers/iio/temperature/hid-sensor-temperature.c (limited to 'drivers/iio/temperature/hid-sensor-temperature.c') diff --git a/drivers/iio/temperature/hid-sensor-temperature.c b/drivers/iio/temperature/hid-sensor-temperature.c new file mode 100644 index 000000000..d40f235af --- /dev/null +++ b/drivers/iio/temperature/hid-sensor-temperature.c @@ -0,0 +1,295 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * HID Sensors Driver + * Copyright (c) 2017, Intel Corporation. + */ +#include +#include +#include +#include +#include +#include +#include + +#include "../common/hid-sensors/hid-sensor-trigger.h" + +struct temperature_state { + struct hid_sensor_common common_attributes; + struct hid_sensor_hub_attribute_info temperature_attr; + struct { + s32 temperature_data; + u64 timestamp __aligned(8); + } scan; + int scale_pre_decml; + int scale_post_decml; + int scale_precision; + int value_offset; +}; + +static const u32 temperature_sensitivity_addresses[] = { + HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE, +}; + +/* Channel definitions */ +static const struct iio_chan_spec temperature_channels[] = { + { + .type = IIO_TEMP, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_SAMP_FREQ) | + BIT(IIO_CHAN_INFO_HYSTERESIS), + }, + IIO_CHAN_SOFT_TIMESTAMP(1), +}; + +/* Adjust channel real bits based on report descriptor */ +static void temperature_adjust_channel_bit_mask(struct iio_chan_spec *channels, + int channel, int size) +{ + channels[channel].scan_type.sign = 's'; + /* Real storage bits will change based on the report desc. */ + channels[channel].scan_type.realbits = size * 8; + /* Maximum size of a sample to capture is s32 */ + channels[channel].scan_type.storagebits = sizeof(s32) * 8; +} + +static int temperature_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct temperature_state *temp_st = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (chan->type != IIO_TEMP) + return -EINVAL; + hid_sensor_power_state( + &temp_st->common_attributes, true); + *val = sensor_hub_input_attr_get_raw_value( + temp_st->common_attributes.hsdev, + HID_USAGE_SENSOR_TEMPERATURE, + HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE, + temp_st->temperature_attr.report_id, + SENSOR_HUB_SYNC, + temp_st->temperature_attr.logical_minimum < 0); + hid_sensor_power_state( + &temp_st->common_attributes, + false); + + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + *val = temp_st->scale_pre_decml; + *val2 = temp_st->scale_post_decml; + return temp_st->scale_precision; + + case IIO_CHAN_INFO_OFFSET: + *val = temp_st->value_offset; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SAMP_FREQ: + return hid_sensor_read_samp_freq_value( + &temp_st->common_attributes, val, val2); + + case IIO_CHAN_INFO_HYSTERESIS: + return hid_sensor_read_raw_hyst_value( + &temp_st->common_attributes, val, val2); + default: + return -EINVAL; + } +} + +static int temperature_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct temperature_state *temp_st = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + return hid_sensor_write_samp_freq_value( + &temp_st->common_attributes, val, val2); + case IIO_CHAN_INFO_HYSTERESIS: + return hid_sensor_write_raw_hyst_value( + &temp_st->common_attributes, val, val2); + default: + return -EINVAL; + } +} + +static const struct iio_info temperature_info = { + .read_raw = &temperature_read_raw, + .write_raw = &temperature_write_raw, +}; + +/* Callback handler to send event after all samples are received and captured */ +static int temperature_proc_event(struct hid_sensor_hub_device *hsdev, + unsigned int usage_id, void *pdev) +{ + struct iio_dev *indio_dev = platform_get_drvdata(pdev); + struct temperature_state *temp_st = iio_priv(indio_dev); + + if (atomic_read(&temp_st->common_attributes.data_ready)) + iio_push_to_buffers_with_timestamp(indio_dev, &temp_st->scan, + iio_get_time_ns(indio_dev)); + + return 0; +} + +/* Capture samples in local storage */ +static int temperature_capture_sample(struct hid_sensor_hub_device *hsdev, + unsigned int usage_id, size_t raw_len, + char *raw_data, void *pdev) +{ + struct iio_dev *indio_dev = platform_get_drvdata(pdev); + struct temperature_state *temp_st = iio_priv(indio_dev); + + switch (usage_id) { + case HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE: + temp_st->scan.temperature_data = *(s32 *)raw_data; + return 0; + default: + return -EINVAL; + } +} + +/* Parse report which is specific to an usage id*/ +static int temperature_parse_report(struct platform_device *pdev, + struct hid_sensor_hub_device *hsdev, + struct iio_chan_spec *channels, + unsigned int usage_id, + struct temperature_state *st) +{ + int ret; + + ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT, + usage_id, + HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE, + &st->temperature_attr); + if (ret < 0) + return ret; + + temperature_adjust_channel_bit_mask(channels, 0, + st->temperature_attr.size); + + st->scale_precision = hid_sensor_format_scale( + HID_USAGE_SENSOR_TEMPERATURE, + &st->temperature_attr, + &st->scale_pre_decml, &st->scale_post_decml); + + return ret; +} + +static struct hid_sensor_hub_callbacks temperature_callbacks = { + .send_event = &temperature_proc_event, + .capture_sample = &temperature_capture_sample, +}; + +/* Function to initialize the processing for usage id */ +static int hid_temperature_probe(struct platform_device *pdev) +{ + static const char *name = "temperature"; + struct iio_dev *indio_dev; + struct temperature_state *temp_st; + struct iio_chan_spec *temp_chans; + struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev); + int ret; + + indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*temp_st)); + if (!indio_dev) + return -ENOMEM; + + temp_st = iio_priv(indio_dev); + temp_st->common_attributes.hsdev = hsdev; + temp_st->common_attributes.pdev = pdev; + + ret = hid_sensor_parse_common_attributes(hsdev, + HID_USAGE_SENSOR_TEMPERATURE, + &temp_st->common_attributes, + temperature_sensitivity_addresses, + ARRAY_SIZE(temperature_sensitivity_addresses)); + if (ret) + return ret; + + temp_chans = devm_kmemdup(&indio_dev->dev, temperature_channels, + sizeof(temperature_channels), GFP_KERNEL); + if (!temp_chans) + return -ENOMEM; + + ret = temperature_parse_report(pdev, hsdev, temp_chans, + HID_USAGE_SENSOR_TEMPERATURE, temp_st); + if (ret) + return ret; + + indio_dev->channels = temp_chans; + indio_dev->num_channels = ARRAY_SIZE(temperature_channels); + indio_dev->info = &temperature_info; + indio_dev->name = name; + indio_dev->modes = INDIO_DIRECT_MODE; + + atomic_set(&temp_st->common_attributes.data_ready, 0); + + ret = hid_sensor_setup_trigger(indio_dev, name, + &temp_st->common_attributes); + if (ret) + return ret; + + platform_set_drvdata(pdev, indio_dev); + + temperature_callbacks.pdev = pdev; + ret = sensor_hub_register_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE, + &temperature_callbacks); + if (ret) + goto error_remove_trigger; + + ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev); + if (ret) + goto error_remove_callback; + + return ret; + +error_remove_callback: + sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE); +error_remove_trigger: + hid_sensor_remove_trigger(indio_dev, &temp_st->common_attributes); + return ret; +} + +/* Function to deinitialize the processing for usage id */ +static int hid_temperature_remove(struct platform_device *pdev) +{ + struct hid_sensor_hub_device *hsdev = dev_get_platdata(&pdev->dev); + struct iio_dev *indio_dev = platform_get_drvdata(pdev); + struct temperature_state *temp_st = iio_priv(indio_dev); + + sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE); + hid_sensor_remove_trigger(indio_dev, &temp_st->common_attributes); + + return 0; +} + +static const struct platform_device_id hid_temperature_ids[] = { + { + /* Format: HID-SENSOR-usage_id_in_hex_lowercase */ + .name = "HID-SENSOR-200033", + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, hid_temperature_ids); + +static struct platform_driver hid_temperature_platform_driver = { + .id_table = hid_temperature_ids, + .driver = { + .name = "temperature-sensor", + .pm = &hid_sensor_pm_ops, + }, + .probe = hid_temperature_probe, + .remove = hid_temperature_remove, +}; +module_platform_driver(hid_temperature_platform_driver); + +MODULE_DESCRIPTION("HID Environmental temperature sensor"); +MODULE_AUTHOR("Song Hongyan "); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(IIO_HID); -- cgit v1.2.3