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/mfd/sec-core.c | 506 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 506 insertions(+) create mode 100644 drivers/mfd/sec-core.c (limited to 'drivers/mfd/sec-core.c') diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c new file mode 100644 index 000000000..b03edda56 --- /dev/null +++ b/drivers/mfd/sec-core.c @@ -0,0 +1,506 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Copyright (c) 2012 Samsung Electronics Co., Ltd +// http://www.samsung.com + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell s5m8751_devs[] = { + { .name = "s5m8751-pmic", }, + { .name = "s5m-charger", }, + { .name = "s5m8751-codec", }, +}; + +static const struct mfd_cell s5m8763_devs[] = { + { .name = "s5m8763-pmic", }, + { .name = "s5m-rtc", }, + { .name = "s5m-charger", }, +}; + +static const struct mfd_cell s5m8767_devs[] = { + { .name = "s5m8767-pmic", }, + { .name = "s5m-rtc", }, + { + .name = "s5m8767-clk", + .of_compatible = "samsung,s5m8767-clk", + }, +}; + +static const struct mfd_cell s2mps11_devs[] = { + { .name = "s2mps11-regulator", }, + { .name = "s2mps14-rtc", }, + { + .name = "s2mps11-clk", + .of_compatible = "samsung,s2mps11-clk", + }, +}; + +static const struct mfd_cell s2mps13_devs[] = { + { .name = "s2mps13-regulator", }, + { .name = "s2mps13-rtc", }, + { + .name = "s2mps13-clk", + .of_compatible = "samsung,s2mps13-clk", + }, +}; + +static const struct mfd_cell s2mps14_devs[] = { + { .name = "s2mps14-regulator", }, + { .name = "s2mps14-rtc", }, + { + .name = "s2mps14-clk", + .of_compatible = "samsung,s2mps14-clk", + }, +}; + +static const struct mfd_cell s2mps15_devs[] = { + { .name = "s2mps15-regulator", }, + { .name = "s2mps15-rtc", }, + { + .name = "s2mps13-clk", + .of_compatible = "samsung,s2mps13-clk", + }, +}; + +static const struct mfd_cell s2mpa01_devs[] = { + { .name = "s2mpa01-pmic", }, + { .name = "s2mps14-rtc", }, +}; + +static const struct mfd_cell s2mpu02_devs[] = { + { .name = "s2mpu02-regulator", }, +}; + +static const struct of_device_id sec_dt_match[] = { + { + .compatible = "samsung,s5m8767-pmic", + .data = (void *)S5M8767X, + }, { + .compatible = "samsung,s2mps11-pmic", + .data = (void *)S2MPS11X, + }, { + .compatible = "samsung,s2mps13-pmic", + .data = (void *)S2MPS13X, + }, { + .compatible = "samsung,s2mps14-pmic", + .data = (void *)S2MPS14X, + }, { + .compatible = "samsung,s2mps15-pmic", + .data = (void *)S2MPS15X, + }, { + .compatible = "samsung,s2mpa01-pmic", + .data = (void *)S2MPA01, + }, { + .compatible = "samsung,s2mpu02-pmic", + .data = (void *)S2MPU02, + }, { + /* Sentinel */ + }, +}; +MODULE_DEVICE_TABLE(of, sec_dt_match); + +static bool s2mpa01_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case S2MPA01_REG_INT1M: + case S2MPA01_REG_INT2M: + case S2MPA01_REG_INT3M: + return false; + default: + return true; + } +} + +static bool s2mps11_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case S2MPS11_REG_INT1M: + case S2MPS11_REG_INT2M: + case S2MPS11_REG_INT3M: + return false; + default: + return true; + } +} + +static bool s2mpu02_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case S2MPU02_REG_INT1M: + case S2MPU02_REG_INT2M: + case S2MPU02_REG_INT3M: + return false; + default: + return true; + } +} + +static bool s5m8763_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case S5M8763_REG_IRQM1: + case S5M8763_REG_IRQM2: + case S5M8763_REG_IRQM3: + case S5M8763_REG_IRQM4: + return false; + default: + return true; + } +} + +static const struct regmap_config sec_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static const struct regmap_config s2mpa01_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S2MPA01_REG_LDO_OVCB4, + .volatile_reg = s2mpa01_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static const struct regmap_config s2mps11_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S2MPS11_REG_L38CTRL, + .volatile_reg = s2mps11_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static const struct regmap_config s2mps13_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S2MPS13_REG_LDODSCH5, + .volatile_reg = s2mps11_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static const struct regmap_config s2mps14_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S2MPS14_REG_LDODSCH3, + .volatile_reg = s2mps11_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static const struct regmap_config s2mps15_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S2MPS15_REG_LDODSCH4, + .volatile_reg = s2mps11_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static const struct regmap_config s2mpu02_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S2MPU02_REG_DVSDATA, + .volatile_reg = s2mpu02_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static const struct regmap_config s5m8763_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S5M8763_REG_LBCNFG2, + .volatile_reg = s5m8763_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static const struct regmap_config s5m8767_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = S5M8767_REG_LDO28CTRL, + .volatile_reg = s2mps11_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic) +{ + unsigned int val; + + /* For each device type, the REG_ID is always the first register */ + if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val)) + dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val); +} + +static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic) +{ + int err; + + if (sec_pmic->device_type != S2MPS13X) + return; + + if (sec_pmic->pdata->disable_wrstbi) { + /* + * If WRSTBI pin is pulled down this feature must be disabled + * because each Suspend to RAM will trigger buck voltage reset + * to default values. + */ + err = regmap_update_bits(sec_pmic->regmap_pmic, + S2MPS13_REG_WRSTBI, + S2MPS13_REG_WRSTBI_MASK, 0x0); + if (err) + dev_warn(sec_pmic->dev, + "Cannot initialize WRSTBI config: %d\n", + err); + } +} + +/* + * Only the common platform data elements for s5m8767 are parsed here from the + * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and + * others have to parse their own platform data elements from device tree. + * + * The s5m8767 platform data structure is instantiated here and the drivers for + * the sub-modules need not instantiate another instance while parsing their + * platform data. + */ +static struct sec_platform_data * +sec_pmic_i2c_parse_dt_pdata(struct device *dev) +{ + struct sec_platform_data *pd; + + pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); + if (!pd) + return ERR_PTR(-ENOMEM); + + pd->manual_poweroff = of_property_read_bool(dev->of_node, + "samsung,s2mps11-acokb-ground"); + pd->disable_wrstbi = of_property_read_bool(dev->of_node, + "samsung,s2mps11-wrstbi-ground"); + return pd; +} + +static int sec_pmic_probe(struct i2c_client *i2c) +{ + const struct regmap_config *regmap; + struct sec_platform_data *pdata; + const struct mfd_cell *sec_devs; + struct sec_pmic_dev *sec_pmic; + int ret, num_sec_devs; + + sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), + GFP_KERNEL); + if (sec_pmic == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, sec_pmic); + sec_pmic->dev = &i2c->dev; + sec_pmic->i2c = i2c; + sec_pmic->irq = i2c->irq; + + pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev); + if (IS_ERR(pdata)) { + ret = PTR_ERR(pdata); + return ret; + } + + sec_pmic->device_type = (unsigned long)of_device_get_match_data(sec_pmic->dev); + sec_pmic->pdata = pdata; + + switch (sec_pmic->device_type) { + case S2MPA01: + regmap = &s2mpa01_regmap_config; + break; + case S2MPS11X: + regmap = &s2mps11_regmap_config; + break; + case S2MPS13X: + regmap = &s2mps13_regmap_config; + break; + case S2MPS14X: + regmap = &s2mps14_regmap_config; + break; + case S2MPS15X: + regmap = &s2mps15_regmap_config; + break; + case S5M8763X: + regmap = &s5m8763_regmap_config; + break; + case S5M8767X: + regmap = &s5m8767_regmap_config; + break; + case S2MPU02: + regmap = &s2mpu02_regmap_config; + break; + default: + regmap = &sec_regmap_config; + break; + } + + sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap); + if (IS_ERR(sec_pmic->regmap_pmic)) { + ret = PTR_ERR(sec_pmic->regmap_pmic); + dev_err(&i2c->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + sec_irq_init(sec_pmic); + + pm_runtime_set_active(sec_pmic->dev); + + switch (sec_pmic->device_type) { + case S5M8751X: + sec_devs = s5m8751_devs; + num_sec_devs = ARRAY_SIZE(s5m8751_devs); + break; + case S5M8763X: + sec_devs = s5m8763_devs; + num_sec_devs = ARRAY_SIZE(s5m8763_devs); + break; + case S5M8767X: + sec_devs = s5m8767_devs; + num_sec_devs = ARRAY_SIZE(s5m8767_devs); + break; + case S2MPA01: + sec_devs = s2mpa01_devs; + num_sec_devs = ARRAY_SIZE(s2mpa01_devs); + break; + case S2MPS11X: + sec_devs = s2mps11_devs; + num_sec_devs = ARRAY_SIZE(s2mps11_devs); + break; + case S2MPS13X: + sec_devs = s2mps13_devs; + num_sec_devs = ARRAY_SIZE(s2mps13_devs); + break; + case S2MPS14X: + sec_devs = s2mps14_devs; + num_sec_devs = ARRAY_SIZE(s2mps14_devs); + break; + case S2MPS15X: + sec_devs = s2mps15_devs; + num_sec_devs = ARRAY_SIZE(s2mps15_devs); + break; + case S2MPU02: + sec_devs = s2mpu02_devs; + num_sec_devs = ARRAY_SIZE(s2mpu02_devs); + break; + default: + dev_err(&i2c->dev, "Unsupported device type (%lu)\n", + sec_pmic->device_type); + return -ENODEV; + } + ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, + NULL, 0, NULL); + if (ret) + return ret; + + sec_pmic_configure(sec_pmic); + sec_pmic_dump_rev(sec_pmic); + + return ret; +} + +static void sec_pmic_shutdown(struct i2c_client *i2c) +{ + struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); + unsigned int reg, mask; + + if (!sec_pmic->pdata->manual_poweroff) + return; + + switch (sec_pmic->device_type) { + case S2MPS11X: + reg = S2MPS11_REG_CTRL1; + mask = S2MPS11_CTRL1_PWRHOLD_MASK; + break; + default: + /* + * Currently only one board with S2MPS11 needs this, so just + * ignore the rest. + */ + dev_warn(sec_pmic->dev, + "Unsupported device %lu for manual power off\n", + sec_pmic->device_type); + return; + } + + regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0); +} + +static int sec_pmic_suspend(struct device *dev) +{ + struct i2c_client *i2c = to_i2c_client(dev); + struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + enable_irq_wake(sec_pmic->irq); + /* + * PMIC IRQ must be disabled during suspend for RTC alarm + * to work properly. + * When device is woken up from suspend, an + * interrupt occurs before resuming I2C bus controller. + * The interrupt is handled by regmap_irq_thread which tries + * to read RTC registers. This read fails (I2C is still + * suspended) and RTC Alarm interrupt is disabled. + */ + disable_irq(sec_pmic->irq); + + return 0; +} + +static int sec_pmic_resume(struct device *dev) +{ + struct i2c_client *i2c = to_i2c_client(dev); + struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + disable_irq_wake(sec_pmic->irq); + enable_irq(sec_pmic->irq); + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, + sec_pmic_suspend, sec_pmic_resume); + +static struct i2c_driver sec_pmic_driver = { + .driver = { + .name = "sec_pmic", + .pm = pm_sleep_ptr(&sec_pmic_pm_ops), + .of_match_table = sec_dt_match, + }, + .probe_new = sec_pmic_probe, + .shutdown = sec_pmic_shutdown, +}; +module_i2c_driver(sec_pmic_driver); + +MODULE_AUTHOR("Sangbeom Kim "); +MODULE_DESCRIPTION("Core support for the S5M MFD"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3