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/input/misc/axp20x-pek.c | 424 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 424 insertions(+) create mode 100644 drivers/input/misc/axp20x-pek.c (limited to 'drivers/input/misc/axp20x-pek.c') diff --git a/drivers/input/misc/axp20x-pek.c b/drivers/input/misc/axp20x-pek.c new file mode 100644 index 000000000..04da7916e --- /dev/null +++ b/drivers/input/misc/axp20x-pek.c @@ -0,0 +1,424 @@ +/* + * axp20x power button driver. + * + * Copyright (C) 2013 Carlo Caione + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define AXP20X_PEK_STARTUP_MASK (0xc0) +#define AXP20X_PEK_SHUTDOWN_MASK (0x03) + +struct axp20x_info { + const struct axp20x_time *startup_time; + unsigned int startup_mask; + const struct axp20x_time *shutdown_time; + unsigned int shutdown_mask; +}; + +struct axp20x_pek { + struct axp20x_dev *axp20x; + struct input_dev *input; + struct axp20x_info *info; + int irq_dbr; + int irq_dbf; +}; + +struct axp20x_time { + unsigned int time; + unsigned int idx; +}; + +static const struct axp20x_time startup_time[] = { + { .time = 128, .idx = 0 }, + { .time = 1000, .idx = 2 }, + { .time = 3000, .idx = 1 }, + { .time = 2000, .idx = 3 }, +}; + +static const struct axp20x_time axp221_startup_time[] = { + { .time = 128, .idx = 0 }, + { .time = 1000, .idx = 1 }, + { .time = 2000, .idx = 2 }, + { .time = 3000, .idx = 3 }, +}; + +static const struct axp20x_time shutdown_time[] = { + { .time = 4000, .idx = 0 }, + { .time = 6000, .idx = 1 }, + { .time = 8000, .idx = 2 }, + { .time = 10000, .idx = 3 }, +}; + +static const struct axp20x_info axp20x_info = { + .startup_time = startup_time, + .startup_mask = AXP20X_PEK_STARTUP_MASK, + .shutdown_time = shutdown_time, + .shutdown_mask = AXP20X_PEK_SHUTDOWN_MASK, +}; + +static const struct axp20x_info axp221_info = { + .startup_time = axp221_startup_time, + .startup_mask = AXP20X_PEK_STARTUP_MASK, + .shutdown_time = shutdown_time, + .shutdown_mask = AXP20X_PEK_SHUTDOWN_MASK, +}; + +static ssize_t axp20x_show_attr(struct device *dev, + const struct axp20x_time *time, + unsigned int mask, char *buf) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + unsigned int val; + int ret, i; + + ret = regmap_read(axp20x_pek->axp20x->regmap, AXP20X_PEK_KEY, &val); + if (ret != 0) + return ret; + + val &= mask; + val >>= ffs(mask) - 1; + + for (i = 0; i < 4; i++) + if (val == time[i].idx) + val = time[i].time; + + return sprintf(buf, "%u\n", val); +} + +static ssize_t axp20x_show_attr_startup(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + + return axp20x_show_attr(dev, axp20x_pek->info->startup_time, + axp20x_pek->info->startup_mask, buf); +} + +static ssize_t axp20x_show_attr_shutdown(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + + return axp20x_show_attr(dev, axp20x_pek->info->shutdown_time, + axp20x_pek->info->shutdown_mask, buf); +} + +static ssize_t axp20x_store_attr(struct device *dev, + const struct axp20x_time *time, + unsigned int mask, const char *buf, + size_t count) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + char val_str[20]; + size_t len; + int ret, i; + unsigned int val, idx = 0; + unsigned int best_err = UINT_MAX; + + val_str[sizeof(val_str) - 1] = '\0'; + strncpy(val_str, buf, sizeof(val_str) - 1); + len = strlen(val_str); + + if (len && val_str[len - 1] == '\n') + val_str[len - 1] = '\0'; + + ret = kstrtouint(val_str, 10, &val); + if (ret) + return ret; + + for (i = 3; i >= 0; i--) { + unsigned int err; + + err = abs(time[i].time - val); + if (err < best_err) { + best_err = err; + idx = time[i].idx; + } + + if (!err) + break; + } + + idx <<= ffs(mask) - 1; + ret = regmap_update_bits(axp20x_pek->axp20x->regmap, AXP20X_PEK_KEY, + mask, idx); + if (ret != 0) + return -EINVAL; + + return count; +} + +static ssize_t axp20x_store_attr_startup(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + + return axp20x_store_attr(dev, axp20x_pek->info->startup_time, + axp20x_pek->info->startup_mask, buf, count); +} + +static ssize_t axp20x_store_attr_shutdown(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + + return axp20x_store_attr(dev, axp20x_pek->info->shutdown_time, + axp20x_pek->info->shutdown_mask, buf, count); +} + +static DEVICE_ATTR(startup, 0644, axp20x_show_attr_startup, + axp20x_store_attr_startup); +static DEVICE_ATTR(shutdown, 0644, axp20x_show_attr_shutdown, + axp20x_store_attr_shutdown); + +static struct attribute *axp20x_attrs[] = { + &dev_attr_startup.attr, + &dev_attr_shutdown.attr, + NULL, +}; +ATTRIBUTE_GROUPS(axp20x); + +static irqreturn_t axp20x_pek_irq(int irq, void *pwr) +{ + struct input_dev *idev = pwr; + struct axp20x_pek *axp20x_pek = input_get_drvdata(idev); + + /* + * The power-button is connected to ground so a falling edge (dbf) + * means it is pressed. + */ + if (irq == axp20x_pek->irq_dbf) + input_report_key(idev, KEY_POWER, true); + else if (irq == axp20x_pek->irq_dbr) + input_report_key(idev, KEY_POWER, false); + + input_sync(idev); + + return IRQ_HANDLED; +} + +static int axp20x_pek_probe_input_device(struct axp20x_pek *axp20x_pek, + struct platform_device *pdev) +{ + struct axp20x_dev *axp20x = axp20x_pek->axp20x; + struct input_dev *idev; + int error; + + axp20x_pek->irq_dbr = platform_get_irq_byname(pdev, "PEK_DBR"); + if (axp20x_pek->irq_dbr < 0) + return axp20x_pek->irq_dbr; + axp20x_pek->irq_dbr = regmap_irq_get_virq(axp20x->regmap_irqc, + axp20x_pek->irq_dbr); + + axp20x_pek->irq_dbf = platform_get_irq_byname(pdev, "PEK_DBF"); + if (axp20x_pek->irq_dbf < 0) + return axp20x_pek->irq_dbf; + axp20x_pek->irq_dbf = regmap_irq_get_virq(axp20x->regmap_irqc, + axp20x_pek->irq_dbf); + + axp20x_pek->input = devm_input_allocate_device(&pdev->dev); + if (!axp20x_pek->input) + return -ENOMEM; + + idev = axp20x_pek->input; + + idev->name = "axp20x-pek"; + idev->phys = "m1kbd/input2"; + idev->dev.parent = &pdev->dev; + + input_set_capability(idev, EV_KEY, KEY_POWER); + + input_set_drvdata(idev, axp20x_pek); + + error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbr, + axp20x_pek_irq, 0, + "axp20x-pek-dbr", idev); + if (error < 0) { + dev_err(&pdev->dev, "Failed to request dbr IRQ#%d: %d\n", + axp20x_pek->irq_dbr, error); + return error; + } + + error = devm_request_any_context_irq(&pdev->dev, axp20x_pek->irq_dbf, + axp20x_pek_irq, 0, + "axp20x-pek-dbf", idev); + if (error < 0) { + dev_err(&pdev->dev, "Failed to request dbf IRQ#%d: %d\n", + axp20x_pek->irq_dbf, error); + return error; + } + + error = input_register_device(idev); + if (error) { + dev_err(&pdev->dev, "Can't register input device: %d\n", + error); + return error; + } + + device_init_wakeup(&pdev->dev, true); + + return 0; +} + +static bool axp20x_pek_should_register_input(struct axp20x_pek *axp20x_pek) +{ + if (IS_ENABLED(CONFIG_INPUT_SOC_BUTTON_ARRAY) && + axp20x_pek->axp20x->variant == AXP288_ID) { + /* + * On Cherry Trail platforms (hrv == 3), do not register the + * input device if there is an "INTCFD9" or "ACPI0011" gpio + * button ACPI device, as that handles the power button too, + * and otherwise we end up reporting all presses twice. + */ + if (soc_intel_is_cht() && + (acpi_dev_present("INTCFD9", NULL, -1) || + acpi_dev_present("ACPI0011", NULL, -1))) + return false; + } + + return true; +} + +static int axp20x_pek_probe(struct platform_device *pdev) +{ + struct axp20x_pek *axp20x_pek; + const struct platform_device_id *match = platform_get_device_id(pdev); + int error; + + if (!match) { + dev_err(&pdev->dev, "Failed to get platform_device_id\n"); + return -EINVAL; + } + + axp20x_pek = devm_kzalloc(&pdev->dev, sizeof(struct axp20x_pek), + GFP_KERNEL); + if (!axp20x_pek) + return -ENOMEM; + + axp20x_pek->axp20x = dev_get_drvdata(pdev->dev.parent); + + if (axp20x_pek_should_register_input(axp20x_pek)) { + error = axp20x_pek_probe_input_device(axp20x_pek, pdev); + if (error) + return error; + } + + axp20x_pek->info = (struct axp20x_info *)match->driver_data; + + platform_set_drvdata(pdev, axp20x_pek); + + return 0; +} + +static int __maybe_unused axp20x_pek_suspend(struct device *dev) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + + /* + * As nested threaded IRQs are not automatically disabled during + * suspend, we must explicitly disable non-wakeup IRQs. + */ + if (device_may_wakeup(dev)) { + enable_irq_wake(axp20x_pek->irq_dbf); + enable_irq_wake(axp20x_pek->irq_dbr); + } else { + disable_irq(axp20x_pek->irq_dbf); + disable_irq(axp20x_pek->irq_dbr); + } + + return 0; +} + +static int __maybe_unused axp20x_pek_resume(struct device *dev) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + + if (device_may_wakeup(dev)) { + disable_irq_wake(axp20x_pek->irq_dbf); + disable_irq_wake(axp20x_pek->irq_dbr); + } else { + enable_irq(axp20x_pek->irq_dbf); + enable_irq(axp20x_pek->irq_dbr); + } + + return 0; +} + +static int __maybe_unused axp20x_pek_resume_noirq(struct device *dev) +{ + struct axp20x_pek *axp20x_pek = dev_get_drvdata(dev); + + if (axp20x_pek->axp20x->variant != AXP288_ID) + return 0; + + /* + * Clear interrupts from button presses during suspend, to avoid + * a wakeup power-button press getting reported to userspace. + */ + regmap_write(axp20x_pek->axp20x->regmap, + AXP20X_IRQ1_STATE + AXP288_IRQ_POKN / 8, + BIT(AXP288_IRQ_POKN % 8)); + + return 0; +} + +static const struct dev_pm_ops axp20x_pek_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(axp20x_pek_suspend, axp20x_pek_resume) +#ifdef CONFIG_PM_SLEEP + .resume_noirq = axp20x_pek_resume_noirq, +#endif +}; + +static const struct platform_device_id axp_pek_id_match[] = { + { + .name = "axp20x-pek", + .driver_data = (kernel_ulong_t)&axp20x_info, + }, + { + .name = "axp221-pek", + .driver_data = (kernel_ulong_t)&axp221_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, axp_pek_id_match); + +static struct platform_driver axp20x_pek_driver = { + .probe = axp20x_pek_probe, + .id_table = axp_pek_id_match, + .driver = { + .name = "axp20x-pek", + .pm = &axp20x_pek_pm_ops, + .dev_groups = axp20x_groups, + }, +}; +module_platform_driver(axp20x_pek_driver); + +MODULE_DESCRIPTION("axp20x Power Button"); +MODULE_AUTHOR("Carlo Caione "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3