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/leds/leds-tlc591xx.c | 242 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 242 insertions(+) create mode 100644 drivers/leds/leds-tlc591xx.c (limited to 'drivers/leds/leds-tlc591xx.c') diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c new file mode 100644 index 000000000..cb7bd1353 --- /dev/null +++ b/drivers/leds/leds-tlc591xx.c @@ -0,0 +1,242 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2014 Belkin Inc. + * Copyright 2015 Andrew Lunn + */ + +#include +#include +#include +#include +#include +#include +#include + +#define TLC591XX_MAX_LEDS 16 +#define TLC591XX_MAX_BRIGHTNESS 256 + +#define TLC591XX_REG_MODE1 0x00 +#define MODE1_RESPON_ADDR_MASK 0xF0 +#define MODE1_NORMAL_MODE (0 << 4) +#define MODE1_SPEED_MODE (1 << 4) + +#define TLC591XX_REG_MODE2 0x01 +#define MODE2_DIM (0 << 5) +#define MODE2_BLINK (1 << 5) +#define MODE2_OCH_STOP (0 << 3) +#define MODE2_OCH_ACK (1 << 3) + +#define TLC591XX_REG_PWM(x) (0x02 + (x)) + +#define TLC591XX_REG_GRPPWM 0x12 +#define TLC591XX_REG_GRPFREQ 0x13 + +/* LED Driver Output State, determine the source that drives LED outputs */ +#define LEDOUT_OFF 0x0 /* Output LOW */ +#define LEDOUT_ON 0x1 /* Output HI-Z */ +#define LEDOUT_DIM 0x2 /* Dimming */ +#define LEDOUT_BLINK 0x3 /* Blinking */ +#define LEDOUT_MASK 0x3 + +#define ldev_to_led(c) container_of(c, struct tlc591xx_led, ldev) + +struct tlc591xx_led { + bool active; + unsigned int led_no; + struct led_classdev ldev; + struct tlc591xx_priv *priv; +}; + +struct tlc591xx_priv { + struct tlc591xx_led leds[TLC591XX_MAX_LEDS]; + struct regmap *regmap; + unsigned int reg_ledout_offset; +}; + +struct tlc591xx { + unsigned int max_leds; + unsigned int reg_ledout_offset; +}; + +static const struct tlc591xx tlc59116 = { + .max_leds = 16, + .reg_ledout_offset = 0x14, +}; + +static const struct tlc591xx tlc59108 = { + .max_leds = 8, + .reg_ledout_offset = 0x0c, +}; + +static int +tlc591xx_set_mode(struct regmap *regmap, u8 mode) +{ + int err; + u8 val; + + err = regmap_write(regmap, TLC591XX_REG_MODE1, MODE1_NORMAL_MODE); + if (err) + return err; + + val = MODE2_OCH_STOP | mode; + + return regmap_write(regmap, TLC591XX_REG_MODE2, val); +} + +static int +tlc591xx_set_ledout(struct tlc591xx_priv *priv, struct tlc591xx_led *led, + u8 val) +{ + unsigned int i = (led->led_no % 4) * 2; + unsigned int mask = LEDOUT_MASK << i; + unsigned int addr = priv->reg_ledout_offset + (led->led_no >> 2); + + val = val << i; + + return regmap_update_bits(priv->regmap, addr, mask, val); +} + +static int +tlc591xx_set_pwm(struct tlc591xx_priv *priv, struct tlc591xx_led *led, + u8 brightness) +{ + u8 pwm = TLC591XX_REG_PWM(led->led_no); + + return regmap_write(priv->regmap, pwm, brightness); +} + +static int +tlc591xx_brightness_set(struct led_classdev *led_cdev, + enum led_brightness brightness) +{ + struct tlc591xx_led *led = ldev_to_led(led_cdev); + struct tlc591xx_priv *priv = led->priv; + int err; + + switch ((int)brightness) { + case 0: + err = tlc591xx_set_ledout(priv, led, LEDOUT_OFF); + break; + case TLC591XX_MAX_BRIGHTNESS: + err = tlc591xx_set_ledout(priv, led, LEDOUT_ON); + break; + default: + err = tlc591xx_set_ledout(priv, led, LEDOUT_DIM); + if (!err) + err = tlc591xx_set_pwm(priv, led, brightness); + } + + return err; +} + +static const struct regmap_config tlc591xx_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x1e, +}; + +static const struct of_device_id of_tlc591xx_leds_match[] = { + { .compatible = "ti,tlc59116", + .data = &tlc59116 }, + { .compatible = "ti,tlc59108", + .data = &tlc59108 }, + {}, +}; +MODULE_DEVICE_TABLE(of, of_tlc591xx_leds_match); + +static int +tlc591xx_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device_node *np, *child; + struct device *dev = &client->dev; + const struct tlc591xx *tlc591xx; + struct tlc591xx_priv *priv; + int err, count, reg; + + np = dev_of_node(dev); + if (!np) + return -ENODEV; + + tlc591xx = device_get_match_data(dev); + if (!tlc591xx) + return -ENODEV; + + count = of_get_available_child_count(np); + if (!count || count > tlc591xx->max_leds) + return -EINVAL; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->regmap = devm_regmap_init_i2c(client, &tlc591xx_regmap); + if (IS_ERR(priv->regmap)) { + err = PTR_ERR(priv->regmap); + dev_err(dev, "Failed to allocate register map: %d\n", err); + return err; + } + priv->reg_ledout_offset = tlc591xx->reg_ledout_offset; + + i2c_set_clientdata(client, priv); + + err = tlc591xx_set_mode(priv->regmap, MODE2_DIM); + if (err < 0) + return err; + + for_each_available_child_of_node(np, child) { + struct tlc591xx_led *led; + struct led_init_data init_data = {}; + + init_data.fwnode = of_fwnode_handle(child); + + err = of_property_read_u32(child, "reg", ®); + if (err) { + of_node_put(child); + return err; + } + if (reg < 0 || reg >= tlc591xx->max_leds || + priv->leds[reg].active) { + of_node_put(child); + return -EINVAL; + } + led = &priv->leds[reg]; + + led->active = true; + led->priv = priv; + led->led_no = reg; + led->ldev.brightness_set_blocking = tlc591xx_brightness_set; + led->ldev.max_brightness = TLC591XX_MAX_BRIGHTNESS; + err = devm_led_classdev_register_ext(dev, &led->ldev, + &init_data); + if (err < 0) { + of_node_put(child); + return dev_err_probe(dev, err, + "couldn't register LED %s\n", + led->ldev.name); + } + } + return 0; +} + +static const struct i2c_device_id tlc591xx_id[] = { + { "tlc59116" }, + { "tlc59108" }, + {}, +}; +MODULE_DEVICE_TABLE(i2c, tlc591xx_id); + +static struct i2c_driver tlc591xx_driver = { + .driver = { + .name = "tlc591xx", + .of_match_table = of_match_ptr(of_tlc591xx_leds_match), + }, + .probe = tlc591xx_probe, + .id_table = tlc591xx_id, +}; + +module_i2c_driver(tlc591xx_driver); + +MODULE_AUTHOR("Andrew Lunn "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("TLC591XX LED driver"); -- cgit v1.2.3