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/accel/dmard10.c | 252 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 252 insertions(+) create mode 100644 drivers/iio/accel/dmard10.c (limited to 'drivers/iio/accel/dmard10.c') diff --git a/drivers/iio/accel/dmard10.c b/drivers/iio/accel/dmard10.c new file mode 100644 index 000000000..07e68aed8 --- /dev/null +++ b/drivers/iio/accel/dmard10.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * IIO driver for the 3-axis accelerometer Domintech ARD10. + * + * Copyright (c) 2016 Hans de Goede + * Copyright (c) 2012 Domintech Technology Co., Ltd + */ + +#include +#include +#include +#include +#include + +#define DMARD10_REG_ACTR 0x00 +#define DMARD10_REG_AFEM 0x0c +#define DMARD10_REG_STADR 0x12 +#define DMARD10_REG_STAINT 0x1c +#define DMARD10_REG_MISC2 0x1f +#define DMARD10_REG_PD 0x21 + +#define DMARD10_MODE_OFF 0x00 +#define DMARD10_MODE_STANDBY 0x02 +#define DMARD10_MODE_ACTIVE 0x06 +#define DMARD10_MODE_READ_OTP 0x12 +#define DMARD10_MODE_RESET_DATA_PATH 0x82 + +/* AFEN set 1, ATM[2:0]=b'000 (normal), EN_Z/Y/X/T=1 */ +#define DMARD10_VALUE_AFEM_AFEN_NORMAL 0x8f +/* ODR[3:0]=b'0111 (100Hz), CCK[3:0]=b'0100 (204.8kHZ) */ +#define DMARD10_VALUE_CKSEL_ODR_100_204 0x74 +/* INTC[6:5]=b'00 */ +#define DMARD10_VALUE_INTC 0x00 +/* TAP1/TAP2 Average 2 */ +#define DMARD10_VALUE_TAPNS_AVE_2 0x11 + +#define DMARD10_VALUE_STADR 0x55 +#define DMARD10_VALUE_STAINT 0xaa +#define DMARD10_VALUE_MISC2_OSCA_EN 0x08 +#define DMARD10_VALUE_PD_RST 0x52 + +/* Offsets into the buffer read in dmard10_read_raw() */ +#define DMARD10_X_OFFSET 1 +#define DMARD10_Y_OFFSET 2 +#define DMARD10_Z_OFFSET 3 + +/* + * a value of + or -128 corresponds to + or - 1G + * scale = 9.81 / 128 = 0.076640625 + */ + +static const int dmard10_nscale = 76640625; + +#define DMARD10_CHANNEL(reg, axis) { \ + .type = IIO_ACCEL, \ + .address = reg, \ + .modified = 1, \ + .channel2 = IIO_MOD_##axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ +} + +static const struct iio_chan_spec dmard10_channels[] = { + DMARD10_CHANNEL(DMARD10_X_OFFSET, X), + DMARD10_CHANNEL(DMARD10_Y_OFFSET, Y), + DMARD10_CHANNEL(DMARD10_Z_OFFSET, Z), +}; + +struct dmard10_data { + struct i2c_client *client; +}; + +/* Init sequence taken from the android driver */ +static int dmard10_reset(struct i2c_client *client) +{ + unsigned char buffer[7]; + int ret; + + /* 1. Powerdown reset */ + ret = i2c_smbus_write_byte_data(client, DMARD10_REG_PD, + DMARD10_VALUE_PD_RST); + if (ret < 0) + return ret; + + /* + * 2. ACTR => Standby mode => Download OTP to parameter reg => + * Standby mode => Reset data path => Standby mode + */ + buffer[0] = DMARD10_REG_ACTR; + buffer[1] = DMARD10_MODE_STANDBY; + buffer[2] = DMARD10_MODE_READ_OTP; + buffer[3] = DMARD10_MODE_STANDBY; + buffer[4] = DMARD10_MODE_RESET_DATA_PATH; + buffer[5] = DMARD10_MODE_STANDBY; + ret = i2c_master_send(client, buffer, 6); + if (ret < 0) + return ret; + + /* 3. OSCA_EN = 1, TSTO = b'000 (INT1 = normal, TEST0 = normal) */ + ret = i2c_smbus_write_byte_data(client, DMARD10_REG_MISC2, + DMARD10_VALUE_MISC2_OSCA_EN); + if (ret < 0) + return ret; + + /* 4. AFEN = 1 (AFE will powerdown after ADC) */ + buffer[0] = DMARD10_REG_AFEM; + buffer[1] = DMARD10_VALUE_AFEM_AFEN_NORMAL; + buffer[2] = DMARD10_VALUE_CKSEL_ODR_100_204; + buffer[3] = DMARD10_VALUE_INTC; + buffer[4] = DMARD10_VALUE_TAPNS_AVE_2; + buffer[5] = 0x00; /* DLYC, no delay timing */ + buffer[6] = 0x07; /* INTD=1 push-pull, INTA=1 active high, AUTOT=1 */ + ret = i2c_master_send(client, buffer, 7); + if (ret < 0) + return ret; + + /* 5. Activation mode */ + ret = i2c_smbus_write_byte_data(client, DMARD10_REG_ACTR, + DMARD10_MODE_ACTIVE); + if (ret < 0) + return ret; + + return 0; +} + +/* Shutdown sequence taken from the android driver */ +static int dmard10_shutdown(struct i2c_client *client) +{ + unsigned char buffer[3]; + + buffer[0] = DMARD10_REG_ACTR; + buffer[1] = DMARD10_MODE_STANDBY; + buffer[2] = DMARD10_MODE_OFF; + + return i2c_master_send(client, buffer, 3); +} + +static int dmard10_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct dmard10_data *data = iio_priv(indio_dev); + __le16 buf[4]; + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + /* + * Read 8 bytes starting at the REG_STADR register, trying to + * read the individual X, Y, Z registers will always read 0. + */ + ret = i2c_smbus_read_i2c_block_data(data->client, + DMARD10_REG_STADR, + sizeof(buf), (u8 *)buf); + if (ret < 0) + return ret; + ret = le16_to_cpu(buf[chan->address]); + *val = sign_extend32(ret, 12); + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + *val = 0; + *val2 = dmard10_nscale; + return IIO_VAL_INT_PLUS_NANO; + default: + return -EINVAL; + } +} + +static const struct iio_info dmard10_info = { + .read_raw = dmard10_read_raw, +}; + +static void dmard10_shutdown_cleanup(void *client) +{ + dmard10_shutdown(client); +} + +static int dmard10_probe(struct i2c_client *client) +{ + int ret; + struct iio_dev *indio_dev; + struct dmard10_data *data; + + /* These 2 registers have special POR reset values used for id */ + ret = i2c_smbus_read_byte_data(client, DMARD10_REG_STADR); + if (ret != DMARD10_VALUE_STADR) + return (ret < 0) ? ret : -ENODEV; + + ret = i2c_smbus_read_byte_data(client, DMARD10_REG_STAINT); + if (ret != DMARD10_VALUE_STAINT) + return (ret < 0) ? ret : -ENODEV; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) { + dev_err(&client->dev, "iio allocation failed!\n"); + return -ENOMEM; + } + + data = iio_priv(indio_dev); + data->client = client; + + indio_dev->info = &dmard10_info; + indio_dev->name = "dmard10"; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = dmard10_channels; + indio_dev->num_channels = ARRAY_SIZE(dmard10_channels); + + ret = dmard10_reset(client); + if (ret < 0) + return ret; + + ret = devm_add_action_or_reset(&client->dev, dmard10_shutdown_cleanup, + client); + if (ret) + return ret; + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static int dmard10_suspend(struct device *dev) +{ + return dmard10_shutdown(to_i2c_client(dev)); +} + +static int dmard10_resume(struct device *dev) +{ + return dmard10_reset(to_i2c_client(dev)); +} + +static DEFINE_SIMPLE_DEV_PM_OPS(dmard10_pm_ops, dmard10_suspend, + dmard10_resume); + +static const struct i2c_device_id dmard10_i2c_id[] = { + {"dmard10", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, dmard10_i2c_id); + +static struct i2c_driver dmard10_driver = { + .driver = { + .name = "dmard10", + .pm = pm_sleep_ptr(&dmard10_pm_ops), + }, + .probe_new = dmard10_probe, + .id_table = dmard10_i2c_id, +}; + +module_i2c_driver(dmard10_driver); + +MODULE_AUTHOR("Hans de Goede "); +MODULE_DESCRIPTION("Domintech ARD10 3-Axis Accelerometer driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3