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/power/supply/tps65090-charger.c | 360 ++++++++++++++++++++++++++++++++ 1 file changed, 360 insertions(+) create mode 100644 drivers/power/supply/tps65090-charger.c (limited to 'drivers/power/supply/tps65090-charger.c') diff --git a/drivers/power/supply/tps65090-charger.c b/drivers/power/supply/tps65090-charger.c new file mode 100644 index 000000000..0990b2fa6 --- /dev/null +++ b/drivers/power/supply/tps65090-charger.c @@ -0,0 +1,360 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Battery charger driver for TI's tps65090 + * + * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. + + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define TPS65090_CHARGER_ENABLE BIT(0) +#define TPS65090_VACG BIT(1) +#define TPS65090_NOITERM BIT(5) + +#define POLL_INTERVAL (HZ * 2) /* Used when no irq */ + +struct tps65090_charger { + struct device *dev; + int ac_online; + int prev_ac_online; + int irq; + struct task_struct *poll_task; + bool passive_mode; + struct power_supply *ac; + struct tps65090_platform_data *pdata; +}; + +static enum power_supply_property tps65090_ac_props[] = { + POWER_SUPPLY_PROP_ONLINE, +}; + +static int tps65090_low_chrg_current(struct tps65090_charger *charger) +{ + int ret; + + if (charger->passive_mode) + return 0; + + ret = tps65090_write(charger->dev->parent, TPS65090_REG_CG_CTRL5, + TPS65090_NOITERM); + if (ret < 0) { + dev_err(charger->dev, "%s(): error reading in register 0x%x\n", + __func__, TPS65090_REG_CG_CTRL5); + return ret; + } + return 0; +} + +static int tps65090_enable_charging(struct tps65090_charger *charger) +{ + int ret; + uint8_t ctrl0 = 0; + + if (charger->passive_mode) + return 0; + + ret = tps65090_read(charger->dev->parent, TPS65090_REG_CG_CTRL0, + &ctrl0); + if (ret < 0) { + dev_err(charger->dev, "%s(): error reading in register 0x%x\n", + __func__, TPS65090_REG_CG_CTRL0); + return ret; + } + + ret = tps65090_write(charger->dev->parent, TPS65090_REG_CG_CTRL0, + (ctrl0 | TPS65090_CHARGER_ENABLE)); + if (ret < 0) { + dev_err(charger->dev, "%s(): error writing in register 0x%x\n", + __func__, TPS65090_REG_CG_CTRL0); + return ret; + } + return 0; +} + +static int tps65090_config_charger(struct tps65090_charger *charger) +{ + uint8_t intrmask = 0; + int ret; + + if (charger->passive_mode) + return 0; + + if (charger->pdata->enable_low_current_chrg) { + ret = tps65090_low_chrg_current(charger); + if (ret < 0) { + dev_err(charger->dev, + "error configuring low charge current\n"); + return ret; + } + } + + /* Enable the VACG interrupt for AC power detect */ + ret = tps65090_read(charger->dev->parent, TPS65090_REG_INTR_MASK, + &intrmask); + if (ret < 0) { + dev_err(charger->dev, "%s(): error reading in register 0x%x\n", + __func__, TPS65090_REG_INTR_MASK); + return ret; + } + + ret = tps65090_write(charger->dev->parent, TPS65090_REG_INTR_MASK, + (intrmask | TPS65090_VACG)); + if (ret < 0) { + dev_err(charger->dev, "%s(): error writing in register 0x%x\n", + __func__, TPS65090_REG_CG_CTRL0); + return ret; + } + + return 0; +} + +static int tps65090_ac_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct tps65090_charger *charger = power_supply_get_drvdata(psy); + + if (psp == POWER_SUPPLY_PROP_ONLINE) { + val->intval = charger->ac_online; + charger->prev_ac_online = charger->ac_online; + return 0; + } + return -EINVAL; +} + +static irqreturn_t tps65090_charger_isr(int irq, void *dev_id) +{ + struct tps65090_charger *charger = dev_id; + int ret; + uint8_t status1 = 0; + uint8_t intrsts = 0; + + ret = tps65090_read(charger->dev->parent, TPS65090_REG_CG_STATUS1, + &status1); + if (ret < 0) { + dev_err(charger->dev, "%s(): Error in reading reg 0x%x\n", + __func__, TPS65090_REG_CG_STATUS1); + return IRQ_HANDLED; + } + msleep(75); + ret = tps65090_read(charger->dev->parent, TPS65090_REG_INTR_STS, + &intrsts); + if (ret < 0) { + dev_err(charger->dev, "%s(): Error in reading reg 0x%x\n", + __func__, TPS65090_REG_INTR_STS); + return IRQ_HANDLED; + } + + if (intrsts & TPS65090_VACG) { + ret = tps65090_enable_charging(charger); + if (ret < 0) + return IRQ_HANDLED; + charger->ac_online = 1; + } else { + charger->ac_online = 0; + } + + /* Clear interrupts. */ + if (!charger->passive_mode) { + ret = tps65090_write(charger->dev->parent, + TPS65090_REG_INTR_STS, 0x00); + if (ret < 0) { + dev_err(charger->dev, + "%s(): Error in writing reg 0x%x\n", + __func__, TPS65090_REG_INTR_STS); + } + } + + if (charger->prev_ac_online != charger->ac_online) + power_supply_changed(charger->ac); + + return IRQ_HANDLED; +} + +static struct tps65090_platform_data * + tps65090_parse_dt_charger_data(struct platform_device *pdev) +{ + struct tps65090_platform_data *pdata; + struct device_node *np = pdev->dev.of_node; + unsigned int prop; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) { + dev_err(&pdev->dev, "Memory alloc for tps65090_pdata failed\n"); + return NULL; + } + + prop = of_property_read_bool(np, "ti,enable-low-current-chrg"); + pdata->enable_low_current_chrg = prop; + + pdata->irq_base = -1; + + return pdata; + +} + +static int tps65090_charger_poll_task(void *data) +{ + set_freezable(); + + while (!kthread_should_stop()) { + schedule_timeout_interruptible(POLL_INTERVAL); + try_to_freeze(); + tps65090_charger_isr(-1, data); + } + return 0; +} + +static const struct power_supply_desc tps65090_charger_desc = { + .name = "tps65090-ac", + .type = POWER_SUPPLY_TYPE_MAINS, + .get_property = tps65090_ac_get_property, + .properties = tps65090_ac_props, + .num_properties = ARRAY_SIZE(tps65090_ac_props), +}; + +static int tps65090_charger_probe(struct platform_device *pdev) +{ + struct tps65090_charger *cdata; + struct tps65090_platform_data *pdata; + struct power_supply_config psy_cfg = {}; + uint8_t status1 = 0; + int ret; + int irq; + + pdata = dev_get_platdata(pdev->dev.parent); + + if (IS_ENABLED(CONFIG_OF) && !pdata && pdev->dev.of_node) + pdata = tps65090_parse_dt_charger_data(pdev); + + if (!pdata) { + dev_err(&pdev->dev, "%s():no platform data available\n", + __func__); + return -ENODEV; + } + + cdata = devm_kzalloc(&pdev->dev, sizeof(*cdata), GFP_KERNEL); + if (!cdata) { + dev_err(&pdev->dev, "failed to allocate memory status\n"); + return -ENOMEM; + } + + platform_set_drvdata(pdev, cdata); + + cdata->dev = &pdev->dev; + cdata->pdata = pdata; + + psy_cfg.supplied_to = pdata->supplied_to; + psy_cfg.num_supplicants = pdata->num_supplicants; + psy_cfg.of_node = pdev->dev.of_node; + psy_cfg.drv_data = cdata; + + cdata->ac = power_supply_register(&pdev->dev, &tps65090_charger_desc, + &psy_cfg); + if (IS_ERR(cdata->ac)) { + dev_err(&pdev->dev, "failed: power supply register\n"); + return PTR_ERR(cdata->ac); + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + irq = -ENXIO; + cdata->irq = irq; + + ret = tps65090_config_charger(cdata); + if (ret < 0) { + dev_err(&pdev->dev, "charger config failed, err %d\n", ret); + goto fail_unregister_supply; + } + + /* Check for charger presence */ + ret = tps65090_read(cdata->dev->parent, TPS65090_REG_CG_STATUS1, + &status1); + if (ret < 0) { + dev_err(cdata->dev, "%s(): Error in reading reg 0x%x", __func__, + TPS65090_REG_CG_STATUS1); + goto fail_unregister_supply; + } + + if (status1 != 0) { + ret = tps65090_enable_charging(cdata); + if (ret < 0) { + dev_err(cdata->dev, "error enabling charger\n"); + goto fail_unregister_supply; + } + cdata->ac_online = 1; + power_supply_changed(cdata->ac); + } + + if (irq != -ENXIO) { + ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, + tps65090_charger_isr, IRQF_ONESHOT, "tps65090-charger", cdata); + if (ret) { + dev_err(cdata->dev, + "Unable to register irq %d err %d\n", irq, + ret); + goto fail_unregister_supply; + } + } else { + cdata->poll_task = kthread_run(tps65090_charger_poll_task, + cdata, "ktps65090charger"); + cdata->passive_mode = true; + if (IS_ERR(cdata->poll_task)) { + ret = PTR_ERR(cdata->poll_task); + dev_err(cdata->dev, + "Unable to run kthread err %d\n", ret); + goto fail_unregister_supply; + } + } + + return 0; + +fail_unregister_supply: + power_supply_unregister(cdata->ac); + + return ret; +} + +static int tps65090_charger_remove(struct platform_device *pdev) +{ + struct tps65090_charger *cdata = platform_get_drvdata(pdev); + + if (cdata->irq == -ENXIO) + kthread_stop(cdata->poll_task); + power_supply_unregister(cdata->ac); + + return 0; +} + +static const struct of_device_id of_tps65090_charger_match[] = { + { .compatible = "ti,tps65090-charger", }, + { /* end */ } +}; +MODULE_DEVICE_TABLE(of, of_tps65090_charger_match); + +static struct platform_driver tps65090_charger_driver = { + .driver = { + .name = "tps65090-charger", + .of_match_table = of_tps65090_charger_match, + }, + .probe = tps65090_charger_probe, + .remove = tps65090_charger_remove, +}; +module_platform_driver(tps65090_charger_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Syed Rafiuddin "); +MODULE_DESCRIPTION("tps65090 battery charger driver"); -- cgit v1.2.3