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/hwmon/emc6w201.c | 487 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 487 insertions(+) create mode 100644 drivers/hwmon/emc6w201.c (limited to 'drivers/hwmon/emc6w201.c') diff --git a/drivers/hwmon/emc6w201.c b/drivers/hwmon/emc6w201.c new file mode 100644 index 000000000..bcd93f0fe --- /dev/null +++ b/drivers/hwmon/emc6w201.c @@ -0,0 +1,487 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * emc6w201.c - Hardware monitoring driver for the SMSC EMC6W201 + * Copyright (C) 2011 Jean Delvare + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * Addresses to scan + */ + +static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; + +/* + * The EMC6W201 registers + */ + +#define EMC6W201_REG_IN(nr) (0x20 + (nr)) +#define EMC6W201_REG_TEMP(nr) (0x26 + (nr)) +#define EMC6W201_REG_FAN(nr) (0x2C + (nr) * 2) +#define EMC6W201_REG_COMPANY 0x3E +#define EMC6W201_REG_VERSTEP 0x3F +#define EMC6W201_REG_CONFIG 0x40 +#define EMC6W201_REG_IN_LOW(nr) (0x4A + (nr) * 2) +#define EMC6W201_REG_IN_HIGH(nr) (0x4B + (nr) * 2) +#define EMC6W201_REG_TEMP_LOW(nr) (0x56 + (nr) * 2) +#define EMC6W201_REG_TEMP_HIGH(nr) (0x57 + (nr) * 2) +#define EMC6W201_REG_FAN_MIN(nr) (0x62 + (nr) * 2) + +enum subfeature { input, min, max }; + +/* + * Per-device data + */ + +struct emc6w201_data { + struct i2c_client *client; + struct mutex update_lock; + bool valid; /* false until following fields are valid */ + unsigned long last_updated; /* in jiffies */ + + /* registers values */ + u8 in[3][6]; + s8 temp[3][6]; + u16 fan[2][5]; +}; + +/* + * Combine LSB and MSB registers in a single value + * Locking: must be called with data->update_lock held + */ +static u16 emc6w201_read16(struct i2c_client *client, u8 reg) +{ + int lsb, msb; + + lsb = i2c_smbus_read_byte_data(client, reg); + msb = i2c_smbus_read_byte_data(client, reg + 1); + if (unlikely(lsb < 0 || msb < 0)) { + dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n", + 16, "read", reg); + return 0xFFFF; /* Arbitrary value */ + } + + return (msb << 8) | lsb; +} + +/* + * Write 16-bit value to LSB and MSB registers + * Locking: must be called with data->update_lock held + */ +static int emc6w201_write16(struct i2c_client *client, u8 reg, u16 val) +{ + int err; + + err = i2c_smbus_write_byte_data(client, reg, val & 0xff); + if (likely(!err)) + err = i2c_smbus_write_byte_data(client, reg + 1, val >> 8); + if (unlikely(err < 0)) + dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n", + 16, "write", reg); + + return err; +} + +/* Read 8-bit value from register */ +static u8 emc6w201_read8(struct i2c_client *client, u8 reg) +{ + int val; + + val = i2c_smbus_read_byte_data(client, reg); + if (unlikely(val < 0)) { + dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n", + 8, "read", reg); + return 0x00; /* Arbitrary value */ + } + + return val; +} + +/* Write 8-bit value to register */ +static int emc6w201_write8(struct i2c_client *client, u8 reg, u8 val) +{ + int err; + + err = i2c_smbus_write_byte_data(client, reg, val); + if (unlikely(err < 0)) + dev_err(&client->dev, "%d-bit %s failed at 0x%02x\n", + 8, "write", reg); + + return err; +} + +static struct emc6w201_data *emc6w201_update_device(struct device *dev) +{ + struct emc6w201_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int nr; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { + for (nr = 0; nr < 6; nr++) { + data->in[input][nr] = + emc6w201_read8(client, + EMC6W201_REG_IN(nr)); + data->in[min][nr] = + emc6w201_read8(client, + EMC6W201_REG_IN_LOW(nr)); + data->in[max][nr] = + emc6w201_read8(client, + EMC6W201_REG_IN_HIGH(nr)); + } + + for (nr = 0; nr < 6; nr++) { + data->temp[input][nr] = + emc6w201_read8(client, + EMC6W201_REG_TEMP(nr)); + data->temp[min][nr] = + emc6w201_read8(client, + EMC6W201_REG_TEMP_LOW(nr)); + data->temp[max][nr] = + emc6w201_read8(client, + EMC6W201_REG_TEMP_HIGH(nr)); + } + + for (nr = 0; nr < 5; nr++) { + data->fan[input][nr] = + emc6w201_read16(client, + EMC6W201_REG_FAN(nr)); + data->fan[min][nr] = + emc6w201_read16(client, + EMC6W201_REG_FAN_MIN(nr)); + } + + data->last_updated = jiffies; + data->valid = true; + } + + mutex_unlock(&data->update_lock); + + return data; +} + +/* + * Sysfs callback functions + */ + +static const s16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 }; + +static ssize_t in_show(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct emc6w201_data *data = emc6w201_update_device(dev); + int sf = to_sensor_dev_attr_2(devattr)->index; + int nr = to_sensor_dev_attr_2(devattr)->nr; + + return sprintf(buf, "%u\n", + (unsigned)data->in[sf][nr] * nominal_mv[nr] / 0xC0); +} + +static ssize_t in_store(struct device *dev, struct device_attribute *devattr, + const char *buf, size_t count) +{ + struct emc6w201_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int sf = to_sensor_dev_attr_2(devattr)->index; + int nr = to_sensor_dev_attr_2(devattr)->nr; + int err; + long val; + u8 reg; + + err = kstrtol(buf, 10, &val); + if (err < 0) + return err; + + val = clamp_val(val, 0, 255 * nominal_mv[nr] / 192); + val = DIV_ROUND_CLOSEST(val * 192, nominal_mv[nr]); + reg = (sf == min) ? EMC6W201_REG_IN_LOW(nr) + : EMC6W201_REG_IN_HIGH(nr); + + mutex_lock(&data->update_lock); + data->in[sf][nr] = val; + err = emc6w201_write8(client, reg, data->in[sf][nr]); + mutex_unlock(&data->update_lock); + + return err < 0 ? err : count; +} + +static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct emc6w201_data *data = emc6w201_update_device(dev); + int sf = to_sensor_dev_attr_2(devattr)->index; + int nr = to_sensor_dev_attr_2(devattr)->nr; + + return sprintf(buf, "%d\n", (int)data->temp[sf][nr] * 1000); +} + +static ssize_t temp_store(struct device *dev, + struct device_attribute *devattr, const char *buf, + size_t count) +{ + struct emc6w201_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int sf = to_sensor_dev_attr_2(devattr)->index; + int nr = to_sensor_dev_attr_2(devattr)->nr; + int err; + long val; + u8 reg; + + err = kstrtol(buf, 10, &val); + if (err < 0) + return err; + + val = clamp_val(val, -127000, 127000); + val = DIV_ROUND_CLOSEST(val, 1000); + reg = (sf == min) ? EMC6W201_REG_TEMP_LOW(nr) + : EMC6W201_REG_TEMP_HIGH(nr); + + mutex_lock(&data->update_lock); + data->temp[sf][nr] = val; + err = emc6w201_write8(client, reg, data->temp[sf][nr]); + mutex_unlock(&data->update_lock); + + return err < 0 ? err : count; +} + +static ssize_t fan_show(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct emc6w201_data *data = emc6w201_update_device(dev); + int sf = to_sensor_dev_attr_2(devattr)->index; + int nr = to_sensor_dev_attr_2(devattr)->nr; + unsigned rpm; + + if (data->fan[sf][nr] == 0 || data->fan[sf][nr] == 0xFFFF) + rpm = 0; + else + rpm = 5400000U / data->fan[sf][nr]; + + return sprintf(buf, "%u\n", rpm); +} + +static ssize_t fan_store(struct device *dev, struct device_attribute *devattr, + const char *buf, size_t count) +{ + struct emc6w201_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int sf = to_sensor_dev_attr_2(devattr)->index; + int nr = to_sensor_dev_attr_2(devattr)->nr; + int err; + unsigned long val; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + if (val == 0) { + val = 0xFFFF; + } else { + val = DIV_ROUND_CLOSEST(5400000U, val); + val = clamp_val(val, 0, 0xFFFE); + } + + mutex_lock(&data->update_lock); + data->fan[sf][nr] = val; + err = emc6w201_write16(client, EMC6W201_REG_FAN_MIN(nr), + data->fan[sf][nr]); + mutex_unlock(&data->update_lock); + + return err < 0 ? err : count; +} + +static SENSOR_DEVICE_ATTR_2_RO(in0_input, in, 0, input); +static SENSOR_DEVICE_ATTR_2_RW(in0_min, in, 0, min); +static SENSOR_DEVICE_ATTR_2_RW(in0_max, in, 0, max); +static SENSOR_DEVICE_ATTR_2_RO(in1_input, in, 1, input); +static SENSOR_DEVICE_ATTR_2_RW(in1_min, in, 1, min); +static SENSOR_DEVICE_ATTR_2_RW(in1_max, in, 1, max); +static SENSOR_DEVICE_ATTR_2_RO(in2_input, in, 2, input); +static SENSOR_DEVICE_ATTR_2_RW(in2_min, in, 2, min); +static SENSOR_DEVICE_ATTR_2_RW(in2_max, in, 2, max); +static SENSOR_DEVICE_ATTR_2_RO(in3_input, in, 3, input); +static SENSOR_DEVICE_ATTR_2_RW(in3_min, in, 3, min); +static SENSOR_DEVICE_ATTR_2_RW(in3_max, in, 3, max); +static SENSOR_DEVICE_ATTR_2_RO(in4_input, in, 4, input); +static SENSOR_DEVICE_ATTR_2_RW(in4_min, in, 4, min); +static SENSOR_DEVICE_ATTR_2_RW(in4_max, in, 4, max); +static SENSOR_DEVICE_ATTR_2_RO(in5_input, in, 5, input); +static SENSOR_DEVICE_ATTR_2_RW(in5_min, in, 5, min); +static SENSOR_DEVICE_ATTR_2_RW(in5_max, in, 5, max); + +static SENSOR_DEVICE_ATTR_2_RO(temp1_input, temp, 0, input); +static SENSOR_DEVICE_ATTR_2_RW(temp1_min, temp, 0, min); +static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0, max); +static SENSOR_DEVICE_ATTR_2_RO(temp2_input, temp, 1, input); +static SENSOR_DEVICE_ATTR_2_RW(temp2_min, temp, 1, min); +static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 1, max); +static SENSOR_DEVICE_ATTR_2_RO(temp3_input, temp, 2, input); +static SENSOR_DEVICE_ATTR_2_RW(temp3_min, temp, 2, min); +static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 2, max); +static SENSOR_DEVICE_ATTR_2_RO(temp4_input, temp, 3, input); +static SENSOR_DEVICE_ATTR_2_RW(temp4_min, temp, 3, min); +static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 3, max); +static SENSOR_DEVICE_ATTR_2_RO(temp5_input, temp, 4, input); +static SENSOR_DEVICE_ATTR_2_RW(temp5_min, temp, 4, min); +static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 4, max); +static SENSOR_DEVICE_ATTR_2_RO(temp6_input, temp, 5, input); +static SENSOR_DEVICE_ATTR_2_RW(temp6_min, temp, 5, min); +static SENSOR_DEVICE_ATTR_2_RW(temp6_max, temp, 5, max); + +static SENSOR_DEVICE_ATTR_2_RO(fan1_input, fan, 0, input); +static SENSOR_DEVICE_ATTR_2_RW(fan1_min, fan, 0, min); +static SENSOR_DEVICE_ATTR_2_RO(fan2_input, fan, 1, input); +static SENSOR_DEVICE_ATTR_2_RW(fan2_min, fan, 1, min); +static SENSOR_DEVICE_ATTR_2_RO(fan3_input, fan, 2, input); +static SENSOR_DEVICE_ATTR_2_RW(fan3_min, fan, 2, min); +static SENSOR_DEVICE_ATTR_2_RO(fan4_input, fan, 3, input); +static SENSOR_DEVICE_ATTR_2_RW(fan4_min, fan, 3, min); +static SENSOR_DEVICE_ATTR_2_RO(fan5_input, fan, 4, input); +static SENSOR_DEVICE_ATTR_2_RW(fan5_min, fan, 4, min); + +static struct attribute *emc6w201_attrs[] = { + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, + + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_min.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_min.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp3_min.dev_attr.attr, + &sensor_dev_attr_temp3_max.dev_attr.attr, + &sensor_dev_attr_temp4_input.dev_attr.attr, + &sensor_dev_attr_temp4_min.dev_attr.attr, + &sensor_dev_attr_temp4_max.dev_attr.attr, + &sensor_dev_attr_temp5_input.dev_attr.attr, + &sensor_dev_attr_temp5_min.dev_attr.attr, + &sensor_dev_attr_temp5_max.dev_attr.attr, + &sensor_dev_attr_temp6_input.dev_attr.attr, + &sensor_dev_attr_temp6_min.dev_attr.attr, + &sensor_dev_attr_temp6_max.dev_attr.attr, + + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan3_min.dev_attr.attr, + &sensor_dev_attr_fan4_input.dev_attr.attr, + &sensor_dev_attr_fan4_min.dev_attr.attr, + &sensor_dev_attr_fan5_input.dev_attr.attr, + &sensor_dev_attr_fan5_min.dev_attr.attr, + NULL +}; + +ATTRIBUTE_GROUPS(emc6w201); + +/* + * Driver interface + */ + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int emc6w201_detect(struct i2c_client *client, + struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = client->adapter; + int company, verstep, config; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + /* Identification */ + company = i2c_smbus_read_byte_data(client, EMC6W201_REG_COMPANY); + if (company != 0x5C) + return -ENODEV; + verstep = i2c_smbus_read_byte_data(client, EMC6W201_REG_VERSTEP); + if (verstep < 0 || (verstep & 0xF0) != 0xB0) + return -ENODEV; + if ((verstep & 0x0F) > 2) { + dev_dbg(&client->dev, "Unknown EMC6W201 stepping %d\n", + verstep & 0x0F); + return -ENODEV; + } + + /* Check configuration */ + config = i2c_smbus_read_byte_data(client, EMC6W201_REG_CONFIG); + if (config < 0 || (config & 0xF4) != 0x04) + return -ENODEV; + if (!(config & 0x01)) { + dev_err(&client->dev, "Monitoring not enabled\n"); + return -ENODEV; + } + + strscpy(info->type, "emc6w201", I2C_NAME_SIZE); + + return 0; +} + +static int emc6w201_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct emc6w201_data *data; + struct device *hwmon_dev; + + data = devm_kzalloc(dev, sizeof(struct emc6w201_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->client = client; + mutex_init(&data->update_lock); + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, + emc6w201_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id emc6w201_id[] = { + { "emc6w201", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, emc6w201_id); + +static struct i2c_driver emc6w201_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "emc6w201", + }, + .probe_new = emc6w201_probe, + .id_table = emc6w201_id, + .detect = emc6w201_detect, + .address_list = normal_i2c, +}; + +module_i2c_driver(emc6w201_driver); + +MODULE_AUTHOR("Jean Delvare "); +MODULE_DESCRIPTION("SMSC EMC6W201 hardware monitoring driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3