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/watchdog/w83627hf_wdt.c | 549 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 549 insertions(+) create mode 100644 drivers/watchdog/w83627hf_wdt.c (limited to 'drivers/watchdog/w83627hf_wdt.c') diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c new file mode 100644 index 000000000..bc33b63c5 --- /dev/null +++ b/drivers/watchdog/w83627hf_wdt.c @@ -0,0 +1,549 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * w83627hf/thf WDT driver + * + * (c) Copyright 2013 Guenter Roeck + * converted to watchdog infrastructure + * + * (c) Copyright 2007 Vlad Drukker + * added support for W83627THF. + * + * (c) Copyright 2003,2007 Pádraig Brady + * + * Based on advantechwdt.c which is based on wdt.c. + * Original copyright messages: + * + * (c) Copyright 2000-2001 Marek Michalkiewicz + * + * (c) Copyright 1996 Alan Cox , + * All Rights Reserved. + * + * Neither Alan Cox nor CymruNet Ltd. admit liability nor provide + * warranty for any of this software. This material is provided + * "AS-IS" and at no charge. + * + * (c) Copyright 1995 Alan Cox + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include + +#define WATCHDOG_NAME "w83627hf/thf/hg/dhg WDT" +#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */ + +static int wdt_io; +static int cr_wdt_timeout; /* WDT timeout register */ +static int cr_wdt_control; /* WDT control register */ +static int cr_wdt_csr; /* WDT control & status register */ +static int wdt_cfg_enter = 0x87;/* key to unlock configuration space */ +static int wdt_cfg_leave = 0xAA;/* key to lock configuration space */ + +enum chips { w83627hf, w83627s, w83697hf, w83697ug, w83637hf, w83627thf, + w83687thf, w83627ehf, w83627dhg, w83627uhg, w83667hg, w83627dhg_p, + w83667hg_b, nct6775, nct6776, nct6779, nct6791, nct6792, nct6793, + nct6795, nct6796, nct6102, nct6116 }; + +static int timeout; /* in seconds */ +module_param(timeout, int, 0); +MODULE_PARM_DESC(timeout, + "Watchdog timeout in seconds. 1 <= timeout <= 255, default=" + __MODULE_STRING(WATCHDOG_TIMEOUT) "."); + +static bool nowayout = WATCHDOG_NOWAYOUT; +module_param(nowayout, bool, 0); +MODULE_PARM_DESC(nowayout, + "Watchdog cannot be stopped once started (default=" + __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); + +static int early_disable; +module_param(early_disable, int, 0); +MODULE_PARM_DESC(early_disable, "Disable watchdog at boot time (default=0)"); + +/* + * Kernel methods. + */ + +#define WDT_EFER (wdt_io+0) /* Extended Function Enable Registers */ +#define WDT_EFIR (wdt_io+0) /* Extended Function Index Register + (same as EFER) */ +#define WDT_EFDR (WDT_EFIR+1) /* Extended Function Data Register */ + +#define W83627HF_LD_WDT 0x08 + +#define W83627HF_ID 0x52 +#define W83627S_ID 0x59 +#define W83697HF_ID 0x60 +#define W83697UG_ID 0x68 +#define W83637HF_ID 0x70 +#define W83627THF_ID 0x82 +#define W83687THF_ID 0x85 +#define W83627EHF_ID 0x88 +#define W83627DHG_ID 0xa0 +#define W83627UHG_ID 0xa2 +#define W83667HG_ID 0xa5 +#define W83627DHG_P_ID 0xb0 +#define W83667HG_B_ID 0xb3 +#define NCT6775_ID 0xb4 +#define NCT6776_ID 0xc3 +#define NCT6102_ID 0xc4 +#define NCT6116_ID 0xd2 +#define NCT6779_ID 0xc5 +#define NCT6791_ID 0xc8 +#define NCT6792_ID 0xc9 +#define NCT6793_ID 0xd1 +#define NCT6795_ID 0xd3 +#define NCT6796_ID 0xd4 /* also NCT9697D, NCT9698D */ + +#define W83627HF_WDT_TIMEOUT 0xf6 +#define W83697HF_WDT_TIMEOUT 0xf4 +#define NCT6102D_WDT_TIMEOUT 0xf1 + +#define W83627HF_WDT_CONTROL 0xf5 +#define W83697HF_WDT_CONTROL 0xf3 +#define NCT6102D_WDT_CONTROL 0xf0 + +#define W836X7HF_WDT_CSR 0xf7 +#define NCT6102D_WDT_CSR 0xf2 + +#define WDT_CSR_STATUS 0x10 +#define WDT_CSR_KBD 0x40 +#define WDT_CSR_MOUSE 0x80 + +static void superio_outb(int reg, int val) +{ + outb(reg, WDT_EFER); + outb(val, WDT_EFDR); +} + +static inline int superio_inb(int reg) +{ + outb(reg, WDT_EFER); + return inb(WDT_EFDR); +} + +static int superio_enter(void) +{ + if (!request_muxed_region(wdt_io, 2, WATCHDOG_NAME)) + return -EBUSY; + + outb_p(wdt_cfg_enter, WDT_EFER); /* Enter extended function mode */ + outb_p(wdt_cfg_enter, WDT_EFER); /* Again according to manual */ + + return 0; +} + +static void superio_select(int ld) +{ + superio_outb(0x07, ld); +} + +static void superio_exit(void) +{ + outb_p(wdt_cfg_leave, WDT_EFER); /* Leave extended function mode */ + release_region(wdt_io, 2); +} + +static int w83627hf_init(struct watchdog_device *wdog, enum chips chip) +{ + int ret; + unsigned char t; + + ret = superio_enter(); + if (ret) + return ret; + + superio_select(W83627HF_LD_WDT); + + /* set CR30 bit 0 to activate GPIO2 */ + t = superio_inb(0x30); + if (!(t & 0x01)) + superio_outb(0x30, t | 0x01); + + switch (chip) { + case w83627hf: + case w83627s: + t = superio_inb(0x2B) & ~0x10; + superio_outb(0x2B, t); /* set GPIO24 to WDT0 */ + break; + case w83697hf: + /* Set pin 119 to WDTO# mode (= CR29, WDT0) */ + t = superio_inb(0x29) & ~0x60; + t |= 0x20; + superio_outb(0x29, t); + break; + case w83697ug: + /* Set pin 118 to WDTO# mode */ + t = superio_inb(0x2b) & ~0x04; + superio_outb(0x2b, t); + break; + case w83627thf: + t = (superio_inb(0x2B) & ~0x08) | 0x04; + superio_outb(0x2B, t); /* set GPIO3 to WDT0 */ + break; + case w83627dhg: + case w83627dhg_p: + t = superio_inb(0x2D) & ~0x01; /* PIN77 -> WDT0# */ + superio_outb(0x2D, t); /* set GPIO5 to WDT0 */ + t = superio_inb(cr_wdt_control); + t |= 0x02; /* enable the WDTO# output low pulse + * to the KBRST# pin */ + superio_outb(cr_wdt_control, t); + break; + case w83637hf: + break; + case w83687thf: + t = superio_inb(0x2C) & ~0x80; /* PIN47 -> WDT0# */ + superio_outb(0x2C, t); + break; + case w83627ehf: + case w83627uhg: + case w83667hg: + case w83667hg_b: + case nct6775: + case nct6776: + case nct6779: + case nct6791: + case nct6792: + case nct6793: + case nct6795: + case nct6796: + case nct6102: + case nct6116: + /* + * These chips have a fixed WDTO# output pin (W83627UHG), + * or support more than one WDTO# output pin. + * Don't touch its configuration, and hope the BIOS + * does the right thing. + */ + t = superio_inb(cr_wdt_control); + t |= 0x02; /* enable the WDTO# output low pulse + * to the KBRST# pin */ + superio_outb(cr_wdt_control, t); + break; + default: + break; + } + + t = superio_inb(cr_wdt_timeout); + if (t != 0) { + if (early_disable) { + pr_warn("Stopping previously enabled watchdog until userland kicks in\n"); + superio_outb(cr_wdt_timeout, 0); + } else { + pr_info("Watchdog already running. Resetting timeout to %d sec\n", + wdog->timeout); + superio_outb(cr_wdt_timeout, wdog->timeout); + } + } + + /* set second mode & disable keyboard turning off watchdog */ + t = superio_inb(cr_wdt_control) & ~0x0C; + superio_outb(cr_wdt_control, t); + + t = superio_inb(cr_wdt_csr); + if (t & WDT_CSR_STATUS) + wdog->bootstatus |= WDIOF_CARDRESET; + + /* reset status, disable keyboard & mouse turning off watchdog */ + t &= ~(WDT_CSR_STATUS | WDT_CSR_KBD | WDT_CSR_MOUSE); + superio_outb(cr_wdt_csr, t); + + superio_exit(); + + return 0; +} + +static int wdt_set_time(unsigned int timeout) +{ + int ret; + + ret = superio_enter(); + if (ret) + return ret; + + superio_select(W83627HF_LD_WDT); + superio_outb(cr_wdt_timeout, timeout); + superio_exit(); + + return 0; +} + +static int wdt_start(struct watchdog_device *wdog) +{ + return wdt_set_time(wdog->timeout); +} + +static int wdt_stop(struct watchdog_device *wdog) +{ + return wdt_set_time(0); +} + +static int wdt_set_timeout(struct watchdog_device *wdog, unsigned int timeout) +{ + wdog->timeout = timeout; + + return 0; +} + +static unsigned int wdt_get_time(struct watchdog_device *wdog) +{ + unsigned int timeleft; + int ret; + + ret = superio_enter(); + if (ret) + return 0; + + superio_select(W83627HF_LD_WDT); + timeleft = superio_inb(cr_wdt_timeout); + superio_exit(); + + return timeleft; +} + +/* + * Kernel Interfaces + */ + +static const struct watchdog_info wdt_info = { + .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, + .identity = "W83627HF Watchdog", +}; + +static const struct watchdog_ops wdt_ops = { + .owner = THIS_MODULE, + .start = wdt_start, + .stop = wdt_stop, + .set_timeout = wdt_set_timeout, + .get_timeleft = wdt_get_time, +}; + +static struct watchdog_device wdt_dev = { + .info = &wdt_info, + .ops = &wdt_ops, + .timeout = WATCHDOG_TIMEOUT, + .min_timeout = 1, + .max_timeout = 255, +}; + +/* + * The WDT needs to learn about soft shutdowns in order to + * turn the timebomb registers off. + */ + +static int wdt_find(int addr) +{ + u8 val; + int ret; + + cr_wdt_timeout = W83627HF_WDT_TIMEOUT; + cr_wdt_control = W83627HF_WDT_CONTROL; + cr_wdt_csr = W836X7HF_WDT_CSR; + + ret = superio_enter(); + if (ret) + return ret; + superio_select(W83627HF_LD_WDT); + val = superio_inb(0x20); + switch (val) { + case W83627HF_ID: + ret = w83627hf; + break; + case W83627S_ID: + ret = w83627s; + break; + case W83697HF_ID: + ret = w83697hf; + cr_wdt_timeout = W83697HF_WDT_TIMEOUT; + cr_wdt_control = W83697HF_WDT_CONTROL; + break; + case W83697UG_ID: + ret = w83697ug; + cr_wdt_timeout = W83697HF_WDT_TIMEOUT; + cr_wdt_control = W83697HF_WDT_CONTROL; + break; + case W83637HF_ID: + ret = w83637hf; + break; + case W83627THF_ID: + ret = w83627thf; + break; + case W83687THF_ID: + ret = w83687thf; + break; + case W83627EHF_ID: + ret = w83627ehf; + break; + case W83627DHG_ID: + ret = w83627dhg; + break; + case W83627DHG_P_ID: + ret = w83627dhg_p; + break; + case W83627UHG_ID: + ret = w83627uhg; + break; + case W83667HG_ID: + ret = w83667hg; + break; + case W83667HG_B_ID: + ret = w83667hg_b; + break; + case NCT6775_ID: + ret = nct6775; + break; + case NCT6776_ID: + ret = nct6776; + break; + case NCT6779_ID: + ret = nct6779; + break; + case NCT6791_ID: + ret = nct6791; + break; + case NCT6792_ID: + ret = nct6792; + break; + case NCT6793_ID: + ret = nct6793; + break; + case NCT6795_ID: + ret = nct6795; + break; + case NCT6796_ID: + ret = nct6796; + break; + case NCT6102_ID: + ret = nct6102; + cr_wdt_timeout = NCT6102D_WDT_TIMEOUT; + cr_wdt_control = NCT6102D_WDT_CONTROL; + cr_wdt_csr = NCT6102D_WDT_CSR; + break; + case NCT6116_ID: + ret = nct6116; + cr_wdt_timeout = NCT6102D_WDT_TIMEOUT; + cr_wdt_control = NCT6102D_WDT_CONTROL; + cr_wdt_csr = NCT6102D_WDT_CSR; + break; + case 0xff: + ret = -ENODEV; + break; + default: + ret = -ENODEV; + pr_err("Unsupported chip ID: 0x%02x\n", val); + break; + } + superio_exit(); + return ret; +} + +/* + * On some systems, the NCT6791D comes with a companion chip and the + * watchdog function is in this companion chip. We must use a different + * unlocking sequence to access the companion chip. + */ +static int __init wdt_use_alt_key(const struct dmi_system_id *d) +{ + wdt_cfg_enter = 0x88; + wdt_cfg_leave = 0xBB; + + return 0; +} + +static const struct dmi_system_id wdt_dmi_table[] __initconst = { + { + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "INVES"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CTS"), + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "INVES"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "SHARKBAY"), + }, + .callback = wdt_use_alt_key, + }, + {} +}; + +static int __init wdt_init(void) +{ + int ret; + int chip; + static const char * const chip_name[] = { + "W83627HF", + "W83627S", + "W83697HF", + "W83697UG", + "W83637HF", + "W83627THF", + "W83687THF", + "W83627EHF", + "W83627DHG", + "W83627UHG", + "W83667HG", + "W83667DHG-P", + "W83667HG-B", + "NCT6775", + "NCT6776", + "NCT6779", + "NCT6791", + "NCT6792", + "NCT6793", + "NCT6795", + "NCT6796", + "NCT6102", + "NCT6116", + }; + + /* Apply system-specific quirks */ + dmi_check_system(wdt_dmi_table); + + wdt_io = 0x2e; + chip = wdt_find(0x2e); + if (chip < 0) { + wdt_io = 0x4e; + chip = wdt_find(0x4e); + if (chip < 0) + return chip; + } + + pr_info("WDT driver for %s Super I/O chip initialising\n", + chip_name[chip]); + + watchdog_init_timeout(&wdt_dev, timeout, NULL); + watchdog_set_nowayout(&wdt_dev, nowayout); + watchdog_stop_on_reboot(&wdt_dev); + + ret = w83627hf_init(&wdt_dev, chip); + if (ret) { + pr_err("failed to initialize watchdog (err=%d)\n", ret); + return ret; + } + + ret = watchdog_register_device(&wdt_dev); + if (ret) + return ret; + + pr_info("initialized. timeout=%d sec (nowayout=%d)\n", + wdt_dev.timeout, nowayout); + + return ret; +} + +static void __exit wdt_exit(void) +{ + watchdog_unregister_device(&wdt_dev); +} + +module_init(wdt_init); +module_exit(wdt_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Pádraig Brady "); +MODULE_DESCRIPTION("w83627hf/thf WDT driver"); -- cgit v1.2.3