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/light/cm3323.c | 277 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 277 insertions(+) create mode 100644 drivers/iio/light/cm3323.c (limited to 'drivers/iio/light/cm3323.c') diff --git a/drivers/iio/light/cm3323.c b/drivers/iio/light/cm3323.c new file mode 100644 index 000000000..e5ce7d0fd --- /dev/null +++ b/drivers/iio/light/cm3323.c @@ -0,0 +1,277 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * CM3323 - Capella Color Light Sensor + * + * Copyright (c) 2015, Intel Corporation. + * + * IIO driver for CM3323 (7-bit I2C slave address 0x10) + * + * TODO: calibscale to correct the lens factor + */ +#include +#include +#include +#include + +#include +#include + +#define CM3323_DRV_NAME "cm3323" + +#define CM3323_CMD_CONF 0x00 +#define CM3323_CMD_RED_DATA 0x08 +#define CM3323_CMD_GREEN_DATA 0x09 +#define CM3323_CMD_BLUE_DATA 0x0A +#define CM3323_CMD_CLEAR_DATA 0x0B + +#define CM3323_CONF_SD_BIT BIT(0) /* sensor disable */ +#define CM3323_CONF_AF_BIT BIT(1) /* auto/manual force mode */ +#define CM3323_CONF_IT_MASK GENMASK(6, 4) +#define CM3323_CONF_IT_SHIFT 4 + +#define CM3323_INT_TIME_AVAILABLE "0.04 0.08 0.16 0.32 0.64 1.28" + +static const struct { + int val; + int val2; +} cm3323_int_time[] = { + {0, 40000}, /* 40 ms */ + {0, 80000}, /* 80 ms */ + {0, 160000}, /* 160 ms */ + {0, 320000}, /* 320 ms */ + {0, 640000}, /* 640 ms */ + {1, 280000}, /* 1280 ms */ +}; + +struct cm3323_data { + struct i2c_client *client; + u16 reg_conf; + struct mutex mutex; +}; + +#define CM3323_COLOR_CHANNEL(_color, _addr) { \ + .type = IIO_INTENSITY, \ + .modified = 1, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME), \ + .channel2 = IIO_MOD_LIGHT_##_color, \ + .address = _addr, \ +} + +static const struct iio_chan_spec cm3323_channels[] = { + CM3323_COLOR_CHANNEL(RED, CM3323_CMD_RED_DATA), + CM3323_COLOR_CHANNEL(GREEN, CM3323_CMD_GREEN_DATA), + CM3323_COLOR_CHANNEL(BLUE, CM3323_CMD_BLUE_DATA), + CM3323_COLOR_CHANNEL(CLEAR, CM3323_CMD_CLEAR_DATA), +}; + +static IIO_CONST_ATTR_INT_TIME_AVAIL(CM3323_INT_TIME_AVAILABLE); + +static struct attribute *cm3323_attributes[] = { + &iio_const_attr_integration_time_available.dev_attr.attr, + NULL +}; + +static const struct attribute_group cm3323_attribute_group = { + .attrs = cm3323_attributes, +}; + +static int cm3323_init(struct iio_dev *indio_dev) +{ + int ret; + struct cm3323_data *data = iio_priv(indio_dev); + + ret = i2c_smbus_read_word_data(data->client, CM3323_CMD_CONF); + if (ret < 0) { + dev_err(&data->client->dev, "Error reading reg_conf\n"); + return ret; + } + + /* enable sensor and set auto force mode */ + ret &= ~(CM3323_CONF_SD_BIT | CM3323_CONF_AF_BIT); + + ret = i2c_smbus_write_word_data(data->client, CM3323_CMD_CONF, ret); + if (ret < 0) { + dev_err(&data->client->dev, "Error writing reg_conf\n"); + return ret; + } + + data->reg_conf = ret; + + return 0; +} + +static void cm3323_disable(void *data) +{ + int ret; + struct iio_dev *indio_dev = data; + struct cm3323_data *cm_data = iio_priv(indio_dev); + + ret = i2c_smbus_write_word_data(cm_data->client, CM3323_CMD_CONF, + CM3323_CONF_SD_BIT); + if (ret < 0) + dev_err(&cm_data->client->dev, "Error writing reg_conf\n"); +} + +static int cm3323_set_it_bits(struct cm3323_data *data, int val, int val2) +{ + int i, ret; + u16 reg_conf; + + for (i = 0; i < ARRAY_SIZE(cm3323_int_time); i++) { + if (val == cm3323_int_time[i].val && + val2 == cm3323_int_time[i].val2) { + reg_conf = data->reg_conf & ~CM3323_CONF_IT_MASK; + reg_conf |= i << CM3323_CONF_IT_SHIFT; + + ret = i2c_smbus_write_word_data(data->client, + CM3323_CMD_CONF, + reg_conf); + if (ret < 0) + return ret; + + data->reg_conf = reg_conf; + + return 0; + } + } + + return -EINVAL; +} + +static int cm3323_get_it_bits(struct cm3323_data *data) +{ + int bits; + + bits = (data->reg_conf & CM3323_CONF_IT_MASK) >> + CM3323_CONF_IT_SHIFT; + + if (bits >= ARRAY_SIZE(cm3323_int_time)) + return -EINVAL; + + return bits; +} + +static int cm3323_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + int ret; + struct cm3323_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + mutex_lock(&data->mutex); + ret = i2c_smbus_read_word_data(data->client, chan->address); + if (ret < 0) { + mutex_unlock(&data->mutex); + return ret; + } + *val = ret; + mutex_unlock(&data->mutex); + + return IIO_VAL_INT; + case IIO_CHAN_INFO_INT_TIME: + mutex_lock(&data->mutex); + ret = cm3323_get_it_bits(data); + if (ret < 0) { + mutex_unlock(&data->mutex); + return ret; + } + + *val = cm3323_int_time[ret].val; + *val2 = cm3323_int_time[ret].val2; + mutex_unlock(&data->mutex); + + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } +} + +static int cm3323_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int val, + int val2, long mask) +{ + struct cm3323_data *data = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + mutex_lock(&data->mutex); + ret = cm3323_set_it_bits(data, val, val2); + mutex_unlock(&data->mutex); + + return ret; + default: + return -EINVAL; + } +} + +static const struct iio_info cm3323_info = { + .read_raw = cm3323_read_raw, + .write_raw = cm3323_write_raw, + .attrs = &cm3323_attribute_group, +}; + +static int cm3323_probe(struct i2c_client *client) +{ + struct cm3323_data *data; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + + mutex_init(&data->mutex); + + indio_dev->info = &cm3323_info; + indio_dev->name = CM3323_DRV_NAME; + indio_dev->channels = cm3323_channels; + indio_dev->num_channels = ARRAY_SIZE(cm3323_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + + ret = cm3323_init(indio_dev); + if (ret < 0) { + dev_err(&client->dev, "cm3323 chip init failed\n"); + return ret; + } + + ret = devm_add_action_or_reset(&client->dev, cm3323_disable, indio_dev); + if (ret < 0) + return ret; + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id cm3323_id[] = { + {"cm3323", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, cm3323_id); + +static const struct of_device_id cm3323_of_match[] = { + { .compatible = "capella,cm3323", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, cm3323_of_match); + +static struct i2c_driver cm3323_driver = { + .driver = { + .name = CM3323_DRV_NAME, + .of_match_table = cm3323_of_match, + }, + .probe_new = cm3323_probe, + .id_table = cm3323_id, +}; + +module_i2c_driver(cm3323_driver); + +MODULE_AUTHOR("Daniel Baluta "); +MODULE_DESCRIPTION("Capella CM3323 Color Light Sensor driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3