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-max8997.c | 294 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 294 insertions(+) create mode 100644 drivers/leds/leds-max8997.c (limited to 'drivers/leds/leds-max8997.c') diff --git a/drivers/leds/leds-max8997.c b/drivers/leds/leds-max8997.c new file mode 100644 index 000000000..c8d7f55c9 --- /dev/null +++ b/drivers/leds/leds-max8997.c @@ -0,0 +1,294 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * leds-max8997.c - LED class driver for MAX8997 LEDs. + * + * Copyright (C) 2011 Samsung Electronics + * Donggeun Kim + */ + +#include +#include +#include +#include +#include +#include +#include + +#define MAX8997_LED_FLASH_SHIFT 3 +#define MAX8997_LED_FLASH_CUR_MASK 0xf8 +#define MAX8997_LED_MOVIE_SHIFT 4 +#define MAX8997_LED_MOVIE_CUR_MASK 0xf0 + +#define MAX8997_LED_FLASH_MAX_BRIGHTNESS 0x1f +#define MAX8997_LED_MOVIE_MAX_BRIGHTNESS 0xf +#define MAX8997_LED_NONE_MAX_BRIGHTNESS 0 + +#define MAX8997_LED0_FLASH_MASK 0x1 +#define MAX8997_LED0_FLASH_PIN_MASK 0x5 +#define MAX8997_LED0_MOVIE_MASK 0x8 +#define MAX8997_LED0_MOVIE_PIN_MASK 0x28 + +#define MAX8997_LED1_FLASH_MASK 0x2 +#define MAX8997_LED1_FLASH_PIN_MASK 0x6 +#define MAX8997_LED1_MOVIE_MASK 0x10 +#define MAX8997_LED1_MOVIE_PIN_MASK 0x30 + +#define MAX8997_LED_BOOST_ENABLE_MASK (1 << 6) + +struct max8997_led { + struct max8997_dev *iodev; + struct led_classdev cdev; + bool enabled; + int id; + enum max8997_led_mode led_mode; + struct mutex mutex; +}; + +static void max8997_led_set_mode(struct max8997_led *led, + enum max8997_led_mode mode) +{ + int ret; + struct i2c_client *client = led->iodev->i2c; + u8 mask = 0, val; + + switch (mode) { + case MAX8997_FLASH_MODE: + mask = MAX8997_LED1_FLASH_MASK | MAX8997_LED0_FLASH_MASK; + val = led->id ? + MAX8997_LED1_FLASH_MASK : MAX8997_LED0_FLASH_MASK; + led->cdev.max_brightness = MAX8997_LED_FLASH_MAX_BRIGHTNESS; + break; + case MAX8997_MOVIE_MODE: + mask = MAX8997_LED1_MOVIE_MASK | MAX8997_LED0_MOVIE_MASK; + val = led->id ? + MAX8997_LED1_MOVIE_MASK : MAX8997_LED0_MOVIE_MASK; + led->cdev.max_brightness = MAX8997_LED_MOVIE_MAX_BRIGHTNESS; + break; + case MAX8997_FLASH_PIN_CONTROL_MODE: + mask = MAX8997_LED1_FLASH_PIN_MASK | + MAX8997_LED0_FLASH_PIN_MASK; + val = led->id ? + MAX8997_LED1_FLASH_PIN_MASK : MAX8997_LED0_FLASH_PIN_MASK; + led->cdev.max_brightness = MAX8997_LED_FLASH_MAX_BRIGHTNESS; + break; + case MAX8997_MOVIE_PIN_CONTROL_MODE: + mask = MAX8997_LED1_MOVIE_PIN_MASK | + MAX8997_LED0_MOVIE_PIN_MASK; + val = led->id ? + MAX8997_LED1_MOVIE_PIN_MASK : MAX8997_LED0_MOVIE_PIN_MASK; + led->cdev.max_brightness = MAX8997_LED_MOVIE_MAX_BRIGHTNESS; + break; + default: + led->cdev.max_brightness = MAX8997_LED_NONE_MAX_BRIGHTNESS; + break; + } + + if (mask) { + ret = max8997_update_reg(client, MAX8997_REG_LEN_CNTL, val, + mask); + if (ret) + dev_err(led->iodev->dev, + "failed to update register(%d)\n", ret); + } + + led->led_mode = mode; +} + +static void max8997_led_enable(struct max8997_led *led, bool enable) +{ + int ret; + struct i2c_client *client = led->iodev->i2c; + u8 val = 0, mask = MAX8997_LED_BOOST_ENABLE_MASK; + + if (led->enabled == enable) + return; + + val = enable ? MAX8997_LED_BOOST_ENABLE_MASK : 0; + + ret = max8997_update_reg(client, MAX8997_REG_BOOST_CNTL, val, mask); + if (ret) + dev_err(led->iodev->dev, + "failed to update register(%d)\n", ret); + + led->enabled = enable; +} + +static void max8997_led_set_current(struct max8997_led *led, + enum led_brightness value) +{ + int ret; + struct i2c_client *client = led->iodev->i2c; + u8 val = 0, mask = 0, reg = 0; + + switch (led->led_mode) { + case MAX8997_FLASH_MODE: + case MAX8997_FLASH_PIN_CONTROL_MODE: + val = value << MAX8997_LED_FLASH_SHIFT; + mask = MAX8997_LED_FLASH_CUR_MASK; + reg = led->id ? MAX8997_REG_FLASH2_CUR : MAX8997_REG_FLASH1_CUR; + break; + case MAX8997_MOVIE_MODE: + case MAX8997_MOVIE_PIN_CONTROL_MODE: + val = value << MAX8997_LED_MOVIE_SHIFT; + mask = MAX8997_LED_MOVIE_CUR_MASK; + reg = MAX8997_REG_MOVIE_CUR; + break; + default: + break; + } + + if (mask) { + ret = max8997_update_reg(client, reg, val, mask); + if (ret) + dev_err(led->iodev->dev, + "failed to update register(%d)\n", ret); + } +} + +static void max8997_led_brightness_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct max8997_led *led = + container_of(led_cdev, struct max8997_led, cdev); + + if (value) { + max8997_led_set_current(led, value); + max8997_led_enable(led, true); + } else { + max8997_led_set_current(led, value); + max8997_led_enable(led, false); + } +} + +static ssize_t mode_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct led_classdev *led_cdev = dev_get_drvdata(dev); + struct max8997_led *led = + container_of(led_cdev, struct max8997_led, cdev); + ssize_t ret = 0; + + mutex_lock(&led->mutex); + + switch (led->led_mode) { + case MAX8997_FLASH_MODE: + ret += sprintf(buf, "FLASH\n"); + break; + case MAX8997_MOVIE_MODE: + ret += sprintf(buf, "MOVIE\n"); + break; + case MAX8997_FLASH_PIN_CONTROL_MODE: + ret += sprintf(buf, "FLASH_PIN_CONTROL\n"); + break; + case MAX8997_MOVIE_PIN_CONTROL_MODE: + ret += sprintf(buf, "MOVIE_PIN_CONTROL\n"); + break; + default: + ret += sprintf(buf, "NONE\n"); + break; + } + + mutex_unlock(&led->mutex); + + return ret; +} + +static ssize_t mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct led_classdev *led_cdev = dev_get_drvdata(dev); + struct max8997_led *led = + container_of(led_cdev, struct max8997_led, cdev); + enum max8997_led_mode mode; + + mutex_lock(&led->mutex); + + if (!strncmp(buf, "FLASH_PIN_CONTROL", 17)) + mode = MAX8997_FLASH_PIN_CONTROL_MODE; + else if (!strncmp(buf, "MOVIE_PIN_CONTROL", 17)) + mode = MAX8997_MOVIE_PIN_CONTROL_MODE; + else if (!strncmp(buf, "FLASH", 5)) + mode = MAX8997_FLASH_MODE; + else if (!strncmp(buf, "MOVIE", 5)) + mode = MAX8997_MOVIE_MODE; + else + mode = MAX8997_NONE; + + max8997_led_set_mode(led, mode); + + mutex_unlock(&led->mutex); + + return size; +} + +static DEVICE_ATTR_RW(mode); + +static struct attribute *max8997_attrs[] = { + &dev_attr_mode.attr, + NULL +}; +ATTRIBUTE_GROUPS(max8997); + +static int max8997_led_probe(struct platform_device *pdev) +{ + struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct max8997_platform_data *pdata = dev_get_platdata(iodev->dev); + struct max8997_led *led; + char name[20]; + int ret = 0; + + led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL); + if (led == NULL) + return -ENOMEM; + + led->id = pdev->id; + snprintf(name, sizeof(name), "max8997-led%d", pdev->id); + + led->cdev.name = name; + led->cdev.brightness_set = max8997_led_brightness_set; + led->cdev.flags |= LED_CORE_SUSPENDRESUME; + led->cdev.brightness = 0; + led->cdev.groups = max8997_groups; + led->iodev = iodev; + + /* initialize mode and brightness according to platform_data */ + if (pdata && pdata->led_pdata) { + u8 mode = 0, brightness = 0; + + mode = pdata->led_pdata->mode[led->id]; + brightness = pdata->led_pdata->brightness[led->id]; + + max8997_led_set_mode(led, mode); + + if (brightness > led->cdev.max_brightness) + brightness = led->cdev.max_brightness; + max8997_led_set_current(led, brightness); + led->cdev.brightness = brightness; + } else { + max8997_led_set_mode(led, MAX8997_NONE); + max8997_led_set_current(led, 0); + } + + mutex_init(&led->mutex); + + ret = devm_led_classdev_register(&pdev->dev, &led->cdev); + if (ret < 0) + return ret; + + return 0; +} + +static struct platform_driver max8997_led_driver = { + .driver = { + .name = "max8997-led", + }, + .probe = max8997_led_probe, +}; + +module_platform_driver(max8997_led_driver); + +MODULE_AUTHOR("Donggeun Kim "); +MODULE_DESCRIPTION("MAX8997 LED driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:max8997-led"); -- cgit v1.2.3