diff options
author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/mfd/arizona-irq.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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().
...
Diffstat (limited to 'drivers/mfd/arizona-irq.c')
-rw-r--r-- | drivers/mfd/arizona-irq.c | 452 |
1 files changed, 452 insertions, 0 deletions
diff --git a/drivers/mfd/arizona-irq.c b/drivers/mfd/arizona-irq.c new file mode 100644 index 000000000..d919ae969 --- /dev/null +++ b/drivers/mfd/arizona-irq.c @@ -0,0 +1,452 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Arizona interrupt support + * + * Copyright 2012 Wolfson Microelectronics plc + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + */ + +#include <linux/delay.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> + +#include <linux/mfd/arizona/core.h> +#include <linux/mfd/arizona/registers.h> + +#include "arizona.h" + +#define ARIZONA_AOD_IRQ_INDEX 0 +#define ARIZONA_MAIN_IRQ_INDEX 1 + +static int arizona_map_irq(struct arizona *arizona, int irq) +{ + int ret; + + if (arizona->aod_irq_chip) { + ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq); + if (ret >= 0) + return ret; + } + + return regmap_irq_get_virq(arizona->irq_chip, irq); +} + +int arizona_request_irq(struct arizona *arizona, int irq, char *name, + irq_handler_t handler, void *data) +{ + irq = arizona_map_irq(arizona, irq); + if (irq < 0) + return irq; + + return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT, + name, data); +} +EXPORT_SYMBOL_GPL(arizona_request_irq); + +void arizona_free_irq(struct arizona *arizona, int irq, void *data) +{ + irq = arizona_map_irq(arizona, irq); + if (irq < 0) + return; + + free_irq(irq, data); +} +EXPORT_SYMBOL_GPL(arizona_free_irq); + +int arizona_set_irq_wake(struct arizona *arizona, int irq, int on) +{ + irq = arizona_map_irq(arizona, irq); + if (irq < 0) + return irq; + + return irq_set_irq_wake(irq, on); +} +EXPORT_SYMBOL_GPL(arizona_set_irq_wake); + +static irqreturn_t arizona_boot_done(int irq, void *data) +{ + struct arizona *arizona = data; + + dev_dbg(arizona->dev, "Boot done\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t arizona_ctrlif_err(int irq, void *data) +{ + struct arizona *arizona = data; + + /* + * For pretty much all potential sources a register cache sync + * won't help, we've just got a software bug somewhere. + */ + dev_err(arizona->dev, "Control interface error\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t arizona_irq_thread(int irq, void *data) +{ + struct arizona *arizona = data; + bool poll; + unsigned int val; + int ret; + + ret = pm_runtime_resume_and_get(arizona->dev); + if (ret < 0) { + dev_err(arizona->dev, "Failed to resume device: %d\n", ret); + return IRQ_NONE; + } + + do { + poll = false; + + if (arizona->aod_irq_chip) { + /* + * Check the AOD status register to determine whether + * the nested IRQ handler should be called. + */ + ret = regmap_read(arizona->regmap, + ARIZONA_AOD_IRQ1, &val); + if (ret) + dev_warn(arizona->dev, + "Failed to read AOD IRQ1 %d\n", ret); + else if (val) + handle_nested_irq( + irq_find_mapping(arizona->virq, 0)); + } + + /* + * Check if one of the main interrupts is asserted and only + * check that domain if it is. + */ + ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS, + &val); + if (ret == 0 && val & ARIZONA_IRQ1_STS) { + handle_nested_irq(irq_find_mapping(arizona->virq, 1)); + } else if (ret != 0) { + dev_err(arizona->dev, + "Failed to read main IRQ status: %d\n", ret); + } + + /* + * Poll the IRQ pin status to see if we're really done + * if the interrupt controller can't do it for us. + */ + if (!arizona->pdata.irq_gpio) { + break; + } else if (arizona->pdata.irq_flags & IRQF_TRIGGER_RISING && + gpio_get_value_cansleep(arizona->pdata.irq_gpio)) { + poll = true; + } else if (arizona->pdata.irq_flags & IRQF_TRIGGER_FALLING && + !gpio_get_value_cansleep(arizona->pdata.irq_gpio)) { + poll = true; + } + } while (poll); + + pm_runtime_mark_last_busy(arizona->dev); + pm_runtime_put_autosuspend(arizona->dev); + + return IRQ_HANDLED; +} + +static void arizona_irq_enable(struct irq_data *data) +{ +} + +static void arizona_irq_disable(struct irq_data *data) +{ +} + +static int arizona_irq_set_wake(struct irq_data *data, unsigned int on) +{ + struct arizona *arizona = irq_data_get_irq_chip_data(data); + + return irq_set_irq_wake(arizona->irq, on); +} + +static struct irq_chip arizona_irq_chip = { + .name = "arizona", + .irq_disable = arizona_irq_disable, + .irq_enable = arizona_irq_enable, + .irq_set_wake = arizona_irq_set_wake, +}; + +static struct lock_class_key arizona_irq_lock_class; +static struct lock_class_key arizona_irq_request_class; + +static int arizona_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct arizona *data = h->host_data; + + irq_set_chip_data(virq, data); + irq_set_lockdep_class(virq, &arizona_irq_lock_class, + &arizona_irq_request_class); + irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_simple_irq); + irq_set_nested_thread(virq, 1); + irq_set_noprobe(virq); + + return 0; +} + +static const struct irq_domain_ops arizona_domain_ops = { + .map = arizona_irq_map, + .xlate = irq_domain_xlate_twocell, +}; + +int arizona_irq_init(struct arizona *arizona) +{ + int flags = IRQF_ONESHOT; + int ret; + const struct regmap_irq_chip *aod, *irq; + struct irq_data *irq_data; + unsigned int virq; + + arizona->ctrlif_error = true; + + switch (arizona->type) { +#ifdef CONFIG_MFD_WM5102 + case WM5102: + aod = &wm5102_aod; + irq = &wm5102_irq; + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_WM5110 + case WM5110: + case WM8280: + aod = &wm5110_aod; + + switch (arizona->rev) { + case 0 ... 2: + irq = &wm5110_irq; + break; + default: + irq = &wm5110_revd_irq; + break; + } + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_CS47L24 + case WM1831: + case CS47L24: + aod = NULL; + irq = &cs47l24_irq; + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_WM8997 + case WM8997: + aod = &wm8997_aod; + irq = &wm8997_irq; + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_WM8998 + case WM8998: + case WM1814: + aod = &wm8998_aod; + irq = &wm8998_irq; + + arizona->ctrlif_error = false; + break; +#endif + default: + BUG_ON("Unknown Arizona class device" == NULL); + return -EINVAL; + } + + /* Disable all wake sources by default */ + regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0); + + /* Read the flags from the interrupt controller if not specified */ + if (!arizona->pdata.irq_flags) { + irq_data = irq_get_irq_data(arizona->irq); + if (!irq_data) { + dev_err(arizona->dev, "Invalid IRQ: %d\n", + arizona->irq); + return -EINVAL; + } + + arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data); + switch (arizona->pdata.irq_flags) { + case IRQF_TRIGGER_LOW: + case IRQF_TRIGGER_HIGH: + case IRQF_TRIGGER_RISING: + case IRQF_TRIGGER_FALLING: + break; + + case IRQ_TYPE_NONE: + default: + /* Device default */ + arizona->pdata.irq_flags = IRQF_TRIGGER_LOW; + break; + } + } + + if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH | + IRQF_TRIGGER_RISING)) { + ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1, + ARIZONA_IRQ_POL, 0); + if (ret != 0) { + dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n", + ret); + goto err; + } + } + + flags |= arizona->pdata.irq_flags; + + /* Allocate a virtual IRQ domain to distribute to the regmap domains */ + arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops, + arizona); + if (!arizona->virq) { + dev_err(arizona->dev, "Failed to add core IRQ domain\n"); + ret = -EINVAL; + goto err; + } + + if (aod) { + virq = irq_create_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX); + if (!virq) { + dev_err(arizona->dev, "Failed to map AOD IRQs\n"); + ret = -EINVAL; + goto err_domain; + } + + ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT, + 0, aod, &arizona->aod_irq_chip); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to add AOD IRQs: %d\n", ret); + goto err_map_aod; + } + } + + virq = irq_create_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX); + if (!virq) { + dev_err(arizona->dev, "Failed to map main IRQs\n"); + ret = -EINVAL; + goto err_aod; + } + + ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT, + 0, irq, &arizona->irq_chip); + if (ret != 0) { + dev_err(arizona->dev, "Failed to add main IRQs: %d\n", ret); + goto err_map_main_irq; + } + + /* Used to emulate edge trigger and to work around broken pinmux */ + if (arizona->pdata.irq_gpio) { + if (gpio_to_irq(arizona->pdata.irq_gpio) != arizona->irq) { + dev_warn(arizona->dev, "IRQ %d is not GPIO %d (%d)\n", + arizona->irq, arizona->pdata.irq_gpio, + gpio_to_irq(arizona->pdata.irq_gpio)); + arizona->irq = gpio_to_irq(arizona->pdata.irq_gpio); + } + + ret = devm_gpio_request_one(arizona->dev, + arizona->pdata.irq_gpio, + GPIOF_IN, "arizona IRQ"); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to request IRQ GPIO %d:: %d\n", + arizona->pdata.irq_gpio, ret); + arizona->pdata.irq_gpio = 0; + } + } + + ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread, + flags, "arizona", arizona); + + if (ret != 0) { + dev_err(arizona->dev, "Failed to request primary IRQ %d: %d\n", + arizona->irq, ret); + goto err_main_irq; + } + + /* Make sure the boot done IRQ is unmasked for resumes */ + ret = arizona_request_irq(arizona, ARIZONA_IRQ_BOOT_DONE, "Boot done", + arizona_boot_done, arizona); + if (ret != 0) { + dev_err(arizona->dev, "Failed to request boot done %d: %d\n", + arizona->irq, ret); + goto err_boot_done; + } + + /* Handle control interface errors in the core */ + if (arizona->ctrlif_error) { + ret = arizona_request_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, + "Control interface error", + arizona_ctrlif_err, arizona); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to request CTRLIF_ERR %d: %d\n", + arizona->irq, ret); + goto err_ctrlif; + } + } + + return 0; + +err_ctrlif: + arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona); +err_boot_done: + free_irq(arizona->irq, arizona); +err_main_irq: + regmap_del_irq_chip(irq_find_mapping(arizona->virq, + ARIZONA_MAIN_IRQ_INDEX), + arizona->irq_chip); +err_map_main_irq: + irq_dispose_mapping(irq_find_mapping(arizona->virq, + ARIZONA_MAIN_IRQ_INDEX)); +err_aod: + regmap_del_irq_chip(irq_find_mapping(arizona->virq, + ARIZONA_AOD_IRQ_INDEX), + arizona->aod_irq_chip); +err_map_aod: + irq_dispose_mapping(irq_find_mapping(arizona->virq, + ARIZONA_AOD_IRQ_INDEX)); +err_domain: + irq_domain_remove(arizona->virq); +err: + return ret; +} + +int arizona_irq_exit(struct arizona *arizona) +{ + unsigned int virq; + + if (arizona->ctrlif_error) + arizona_free_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, arizona); + arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona); + + virq = irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX); + regmap_del_irq_chip(virq, arizona->irq_chip); + irq_dispose_mapping(virq); + + virq = irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX); + regmap_del_irq_chip(virq, arizona->aod_irq_chip); + irq_dispose_mapping(virq); + + irq_domain_remove(arizona->virq); + + free_irq(arizona->irq, arizona); + + return 0; +} |