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-aw2013.c | 433 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 433 insertions(+) create mode 100644 drivers/leds/leds-aw2013.c (limited to 'drivers/leds/leds-aw2013.c') diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c new file mode 100644 index 000000000..0b52fc909 --- /dev/null +++ b/drivers/leds/leds-aw2013.c @@ -0,0 +1,433 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Driver for Awinic AW2013 3-channel LED driver + +#include +#include +#include +#include +#include +#include +#include + +#define AW2013_MAX_LEDS 3 + +/* Reset and ID register */ +#define AW2013_RSTR 0x00 +#define AW2013_RSTR_RESET 0x55 +#define AW2013_RSTR_CHIP_ID 0x33 + +/* Global control register */ +#define AW2013_GCR 0x01 +#define AW2013_GCR_ENABLE BIT(0) + +/* LED channel enable register */ +#define AW2013_LCTR 0x30 +#define AW2013_LCTR_LE(x) BIT((x)) + +/* LED channel control registers */ +#define AW2013_LCFG(x) (0x31 + (x)) +#define AW2013_LCFG_IMAX_MASK (BIT(0) | BIT(1)) // Should be 0-3 +#define AW2013_LCFG_MD BIT(4) +#define AW2013_LCFG_FI BIT(5) +#define AW2013_LCFG_FO BIT(6) + +/* LED channel PWM registers */ +#define AW2013_REG_PWM(x) (0x34 + (x)) + +/* LED channel timing registers */ +#define AW2013_LEDT0(x) (0x37 + (x) * 3) +#define AW2013_LEDT0_T1(x) ((x) << 4) // Should be 0-7 +#define AW2013_LEDT0_T2(x) (x) // Should be 0-5 + +#define AW2013_LEDT1(x) (0x38 + (x) * 3) +#define AW2013_LEDT1_T3(x) ((x) << 4) // Should be 0-7 +#define AW2013_LEDT1_T4(x) (x) // Should be 0-7 + +#define AW2013_LEDT2(x) (0x39 + (x) * 3) +#define AW2013_LEDT2_T0(x) ((x) << 4) // Should be 0-8 +#define AW2013_LEDT2_REPEAT(x) (x) // Should be 0-15 + +#define AW2013_REG_MAX 0x77 + +#define AW2013_TIME_STEP 130 /* ms */ + +struct aw2013; + +struct aw2013_led { + struct aw2013 *chip; + struct led_classdev cdev; + u32 num; + unsigned int imax; +}; + +struct aw2013 { + struct mutex mutex; /* held when writing to registers */ + struct regulator *vcc_regulator; + struct i2c_client *client; + struct aw2013_led leds[AW2013_MAX_LEDS]; + struct regmap *regmap; + int num_leds; + bool enabled; +}; + +static int aw2013_chip_init(struct aw2013 *chip) +{ + int i, ret; + + ret = regmap_write(chip->regmap, AW2013_GCR, AW2013_GCR_ENABLE); + if (ret) { + dev_err(&chip->client->dev, "Failed to enable the chip: %d\n", + ret); + return ret; + } + + for (i = 0; i < chip->num_leds; i++) { + ret = regmap_update_bits(chip->regmap, + AW2013_LCFG(chip->leds[i].num), + AW2013_LCFG_IMAX_MASK, + chip->leds[i].imax); + if (ret) { + dev_err(&chip->client->dev, + "Failed to set maximum current for led %d: %d\n", + chip->leds[i].num, ret); + return ret; + } + } + + return ret; +} + +static void aw2013_chip_disable(struct aw2013 *chip) +{ + int ret; + + if (!chip->enabled) + return; + + regmap_write(chip->regmap, AW2013_GCR, 0); + + ret = regulator_disable(chip->vcc_regulator); + if (ret) { + dev_err(&chip->client->dev, + "Failed to disable regulator: %d\n", ret); + return; + } + + chip->enabled = false; +} + +static int aw2013_chip_enable(struct aw2013 *chip) +{ + int ret; + + if (chip->enabled) + return 0; + + ret = regulator_enable(chip->vcc_regulator); + if (ret) { + dev_err(&chip->client->dev, + "Failed to enable regulator: %d\n", ret); + return ret; + } + chip->enabled = true; + + ret = aw2013_chip_init(chip); + if (ret) + aw2013_chip_disable(chip); + + return ret; +} + +static bool aw2013_chip_in_use(struct aw2013 *chip) +{ + int i; + + for (i = 0; i < chip->num_leds; i++) + if (chip->leds[i].cdev.brightness) + return true; + + return false; +} + +static int aw2013_brightness_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct aw2013_led *led = container_of(cdev, struct aw2013_led, cdev); + int ret, num; + + mutex_lock(&led->chip->mutex); + + if (aw2013_chip_in_use(led->chip)) { + ret = aw2013_chip_enable(led->chip); + if (ret) + goto error; + } + + num = led->num; + + ret = regmap_write(led->chip->regmap, AW2013_REG_PWM(num), brightness); + if (ret) + goto error; + + if (brightness) { + ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR, + AW2013_LCTR_LE(num), 0xFF); + } else { + ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR, + AW2013_LCTR_LE(num), 0); + if (ret) + goto error; + ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num), + AW2013_LCFG_MD, 0); + } + if (ret) + goto error; + + if (!aw2013_chip_in_use(led->chip)) + aw2013_chip_disable(led->chip); + +error: + mutex_unlock(&led->chip->mutex); + + return ret; +} + +static int aw2013_blink_set(struct led_classdev *cdev, + unsigned long *delay_on, unsigned long *delay_off) +{ + struct aw2013_led *led = container_of(cdev, struct aw2013_led, cdev); + int ret, num = led->num; + unsigned long off = 0, on = 0; + + /* If no blink specified, default to 1 Hz. */ + if (!*delay_off && !*delay_on) { + *delay_off = 500; + *delay_on = 500; + } + + if (!led->cdev.brightness) { + led->cdev.brightness = LED_FULL; + ret = aw2013_brightness_set(&led->cdev, led->cdev.brightness); + if (ret) + return ret; + } + + /* Never on - just set to off */ + if (!*delay_on) { + led->cdev.brightness = LED_OFF; + return aw2013_brightness_set(&led->cdev, LED_OFF); + } + + mutex_lock(&led->chip->mutex); + + /* Never off - brightness is already set, disable blinking */ + if (!*delay_off) { + ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num), + AW2013_LCFG_MD, 0); + goto out; + } + + /* Convert into values the HW will understand. */ + off = min(5, ilog2((*delay_off - 1) / AW2013_TIME_STEP) + 1); + on = min(7, ilog2((*delay_on - 1) / AW2013_TIME_STEP) + 1); + + *delay_off = BIT(off) * AW2013_TIME_STEP; + *delay_on = BIT(on) * AW2013_TIME_STEP; + + /* Set timings */ + ret = regmap_write(led->chip->regmap, + AW2013_LEDT0(num), AW2013_LEDT0_T2(on)); + if (ret) + goto out; + ret = regmap_write(led->chip->regmap, + AW2013_LEDT1(num), AW2013_LEDT1_T4(off)); + if (ret) + goto out; + + /* Finally, enable the LED */ + ret = regmap_update_bits(led->chip->regmap, AW2013_LCFG(num), + AW2013_LCFG_MD, 0xFF); + if (ret) + goto out; + + ret = regmap_update_bits(led->chip->regmap, AW2013_LCTR, + AW2013_LCTR_LE(num), 0xFF); + +out: + mutex_unlock(&led->chip->mutex); + + return ret; +} + +static int aw2013_probe_dt(struct aw2013 *chip) +{ + struct device_node *np = dev_of_node(&chip->client->dev), *child; + int count, ret = 0, i = 0; + struct aw2013_led *led; + + count = of_get_available_child_count(np); + if (!count || count > AW2013_MAX_LEDS) + return -EINVAL; + + regmap_write(chip->regmap, AW2013_RSTR, AW2013_RSTR_RESET); + + for_each_available_child_of_node(np, child) { + struct led_init_data init_data = {}; + u32 source; + u32 imax; + + ret = of_property_read_u32(child, "reg", &source); + if (ret != 0 || source >= AW2013_MAX_LEDS) { + dev_err(&chip->client->dev, + "Couldn't read LED address: %d\n", ret); + count--; + continue; + } + + led = &chip->leds[i]; + led->num = source; + led->chip = chip; + init_data.fwnode = of_fwnode_handle(child); + + if (!of_property_read_u32(child, "led-max-microamp", &imax)) { + led->imax = min_t(u32, imax / 5000, 3); + } else { + led->imax = 1; // 5mA + dev_info(&chip->client->dev, + "DT property led-max-microamp is missing\n"); + } + + led->cdev.brightness_set_blocking = aw2013_brightness_set; + led->cdev.blink_set = aw2013_blink_set; + + ret = devm_led_classdev_register_ext(&chip->client->dev, + &led->cdev, &init_data); + if (ret < 0) { + of_node_put(child); + return ret; + } + + i++; + } + + if (!count) + return -EINVAL; + + chip->num_leds = i; + + return 0; +} + +static const struct regmap_config aw2013_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = AW2013_REG_MAX, +}; + +static int aw2013_probe(struct i2c_client *client) +{ + struct aw2013 *chip; + int ret; + unsigned int chipid; + + chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + mutex_init(&chip->mutex); + mutex_lock(&chip->mutex); + + chip->client = client; + i2c_set_clientdata(client, chip); + + chip->regmap = devm_regmap_init_i2c(client, &aw2013_regmap_config); + if (IS_ERR(chip->regmap)) { + ret = PTR_ERR(chip->regmap); + dev_err(&client->dev, "Failed to allocate register map: %d\n", + ret); + goto error; + } + + chip->vcc_regulator = devm_regulator_get(&client->dev, "vcc"); + ret = PTR_ERR_OR_ZERO(chip->vcc_regulator); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(&client->dev, + "Failed to request regulator: %d\n", ret); + goto error; + } + + ret = regulator_enable(chip->vcc_regulator); + if (ret) { + dev_err(&client->dev, + "Failed to enable regulator: %d\n", ret); + goto error; + } + + ret = regmap_read(chip->regmap, AW2013_RSTR, &chipid); + if (ret) { + dev_err(&client->dev, "Failed to read chip ID: %d\n", + ret); + goto error_reg; + } + + if (chipid != AW2013_RSTR_CHIP_ID) { + dev_err(&client->dev, "Chip reported wrong ID: %x\n", + chipid); + ret = -ENODEV; + goto error_reg; + } + + ret = aw2013_probe_dt(chip); + if (ret < 0) + goto error_reg; + + ret = regulator_disable(chip->vcc_regulator); + if (ret) { + dev_err(&client->dev, + "Failed to disable regulator: %d\n", ret); + goto error; + } + + mutex_unlock(&chip->mutex); + + return 0; + +error_reg: + regulator_disable(chip->vcc_regulator); + +error: + mutex_destroy(&chip->mutex); + return ret; +} + +static void aw2013_remove(struct i2c_client *client) +{ + struct aw2013 *chip = i2c_get_clientdata(client); + + aw2013_chip_disable(chip); + + mutex_destroy(&chip->mutex); +} + +static const struct of_device_id aw2013_match_table[] = { + { .compatible = "awinic,aw2013", }, + { /* sentinel */ }, +}; + +MODULE_DEVICE_TABLE(of, aw2013_match_table); + +static struct i2c_driver aw2013_driver = { + .driver = { + .name = "leds-aw2013", + .of_match_table = of_match_ptr(aw2013_match_table), + }, + .probe_new = aw2013_probe, + .remove = aw2013_remove, +}; + +module_i2c_driver(aw2013_driver); + +MODULE_AUTHOR("Nikita Travkin "); +MODULE_DESCRIPTION("AW2013 LED driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3