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/asb100.c | 1008 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1008 insertions(+) create mode 100644 drivers/hwmon/asb100.c (limited to 'drivers/hwmon/asb100.c') diff --git a/drivers/hwmon/asb100.c b/drivers/hwmon/asb100.c new file mode 100644 index 000000000..ce4da8367 --- /dev/null +++ b/drivers/hwmon/asb100.c @@ -0,0 +1,1008 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * asb100.c - Part of lm_sensors, Linux kernel modules for hardware + * monitoring + * + * Copyright (C) 2004 Mark M. Hoffman + * + * (derived from w83781d.c) + * + * Copyright (C) 1998 - 2003 Frodo Looijaard , + * Philip Edelbrock , and + * Mark Studebaker + */ + +/* + * This driver supports the hardware sensor chips: Asus ASB100 and + * ASB100-A "BACH". + * + * ASB100-A supports pwm1, while plain ASB100 does not. There is no known + * way for the driver to tell which one is there. + * + * Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA + * asb100 7 3 1 4 0x31 0x0694 yes no + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "lm75.h" + +/* I2C addresses to scan */ +static const unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; + +static unsigned short force_subclients[4]; +module_param_array(force_subclients, short, NULL, 0); +MODULE_PARM_DESC(force_subclients, + "List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}"); + +/* Voltage IN registers 0-6 */ +#define ASB100_REG_IN(nr) (0x20 + (nr)) +#define ASB100_REG_IN_MAX(nr) (0x2b + (nr * 2)) +#define ASB100_REG_IN_MIN(nr) (0x2c + (nr * 2)) + +/* FAN IN registers 1-3 */ +#define ASB100_REG_FAN(nr) (0x28 + (nr)) +#define ASB100_REG_FAN_MIN(nr) (0x3b + (nr)) + +/* TEMPERATURE registers 1-4 */ +static const u16 asb100_reg_temp[] = {0, 0x27, 0x150, 0x250, 0x17}; +static const u16 asb100_reg_temp_max[] = {0, 0x39, 0x155, 0x255, 0x18}; +static const u16 asb100_reg_temp_hyst[] = {0, 0x3a, 0x153, 0x253, 0x19}; + +#define ASB100_REG_TEMP(nr) (asb100_reg_temp[nr]) +#define ASB100_REG_TEMP_MAX(nr) (asb100_reg_temp_max[nr]) +#define ASB100_REG_TEMP_HYST(nr) (asb100_reg_temp_hyst[nr]) + +#define ASB100_REG_TEMP2_CONFIG 0x0152 +#define ASB100_REG_TEMP3_CONFIG 0x0252 + + +#define ASB100_REG_CONFIG 0x40 +#define ASB100_REG_ALARM1 0x41 +#define ASB100_REG_ALARM2 0x42 +#define ASB100_REG_SMIM1 0x43 +#define ASB100_REG_SMIM2 0x44 +#define ASB100_REG_VID_FANDIV 0x47 +#define ASB100_REG_I2C_ADDR 0x48 +#define ASB100_REG_CHIPID 0x49 +#define ASB100_REG_I2C_SUBADDR 0x4a +#define ASB100_REG_PIN 0x4b +#define ASB100_REG_IRQ 0x4c +#define ASB100_REG_BANK 0x4e +#define ASB100_REG_CHIPMAN 0x4f + +#define ASB100_REG_WCHIPID 0x58 + +/* bit 7 -> enable, bits 0-3 -> duty cycle */ +#define ASB100_REG_PWM1 0x59 + +/* + * CONVERSIONS + * Rounding and limit checking is only done on the TO_REG variants. + */ + +/* These constants are a guess, consistent w/ w83781d */ +#define ASB100_IN_MIN 0 +#define ASB100_IN_MAX 4080 + +/* + * IN: 1/1000 V (0V to 4.08V) + * REG: 16mV/bit + */ +static u8 IN_TO_REG(unsigned val) +{ + unsigned nval = clamp_val(val, ASB100_IN_MIN, ASB100_IN_MAX); + return (nval + 8) / 16; +} + +static unsigned IN_FROM_REG(u8 reg) +{ + return reg * 16; +} + +static u8 FAN_TO_REG(long rpm, int div) +{ + if (rpm == -1) + return 0; + if (rpm == 0) + return 255; + rpm = clamp_val(rpm, 1, 1000000); + return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); +} + +static int FAN_FROM_REG(u8 val, int div) +{ + return val == 0 ? -1 : val == 255 ? 0 : 1350000 / (val * div); +} + +/* These constants are a guess, consistent w/ w83781d */ +#define ASB100_TEMP_MIN -128000 +#define ASB100_TEMP_MAX 127000 + +/* + * TEMP: 0.001C/bit (-128C to +127C) + * REG: 1C/bit, two's complement + */ +static u8 TEMP_TO_REG(long temp) +{ + int ntemp = clamp_val(temp, ASB100_TEMP_MIN, ASB100_TEMP_MAX); + ntemp += (ntemp < 0 ? -500 : 500); + return (u8)(ntemp / 1000); +} + +static int TEMP_FROM_REG(u8 reg) +{ + return (s8)reg * 1000; +} + +/* + * PWM: 0 - 255 per sensors documentation + * REG: (6.25% duty cycle per bit) + */ +static u8 ASB100_PWM_TO_REG(int pwm) +{ + pwm = clamp_val(pwm, 0, 255); + return (u8)(pwm / 16); +} + +static int ASB100_PWM_FROM_REG(u8 reg) +{ + return reg * 16; +} + +#define DIV_FROM_REG(val) (1 << (val)) + +/* + * FAN DIV: 1, 2, 4, or 8 (defaults to 2) + * REG: 0, 1, 2, or 3 (respectively) (defaults to 1) + */ +static u8 DIV_TO_REG(long val) +{ + return val == 8 ? 3 : val == 4 ? 2 : val == 1 ? 0 : 1; +} + +/* + * For each registered client, we need to keep some data in memory. That + * data is pointed to by client->data. The structure itself is + * dynamically allocated, at the same time the client itself is allocated. + */ +struct asb100_data { + struct device *hwmon_dev; + struct mutex lock; + + struct mutex update_lock; + unsigned long last_updated; /* In jiffies */ + + /* array of 2 pointers to subclients */ + struct i2c_client *lm75[2]; + + bool valid; /* true if following fields are valid */ + u8 in[7]; /* Register value */ + u8 in_max[7]; /* Register value */ + u8 in_min[7]; /* Register value */ + u8 fan[3]; /* Register value */ + u8 fan_min[3]; /* Register value */ + u16 temp[4]; /* Register value (0 and 3 are u8 only) */ + u16 temp_max[4]; /* Register value (0 and 3 are u8 only) */ + u16 temp_hyst[4]; /* Register value (0 and 3 are u8 only) */ + u8 fan_div[3]; /* Register encoding, right justified */ + u8 pwm; /* Register encoding */ + u8 vid; /* Register encoding, combined */ + u32 alarms; /* Register encoding, combined */ + u8 vrm; +}; + +static int asb100_read_value(struct i2c_client *client, u16 reg); +static void asb100_write_value(struct i2c_client *client, u16 reg, u16 val); + +static int asb100_probe(struct i2c_client *client); +static int asb100_detect(struct i2c_client *client, + struct i2c_board_info *info); +static void asb100_remove(struct i2c_client *client); +static struct asb100_data *asb100_update_device(struct device *dev); +static void asb100_init_client(struct i2c_client *client); + +static const struct i2c_device_id asb100_id[] = { + { "asb100", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, asb100_id); + +static struct i2c_driver asb100_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "asb100", + }, + .probe_new = asb100_probe, + .remove = asb100_remove, + .id_table = asb100_id, + .detect = asb100_detect, + .address_list = normal_i2c, +}; + +/* 7 Voltages */ +#define show_in_reg(reg) \ +static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ + char *buf) \ +{ \ + int nr = to_sensor_dev_attr(attr)->index; \ + struct asb100_data *data = asb100_update_device(dev); \ + return sprintf(buf, "%d\n", IN_FROM_REG(data->reg[nr])); \ +} + +show_in_reg(in) +show_in_reg(in_min) +show_in_reg(in_max) + +#define set_in_reg(REG, reg) \ +static ssize_t set_in_##reg(struct device *dev, struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + int nr = to_sensor_dev_attr(attr)->index; \ + struct i2c_client *client = to_i2c_client(dev); \ + struct asb100_data *data = i2c_get_clientdata(client); \ + unsigned long val; \ + int err = kstrtoul(buf, 10, &val); \ + if (err) \ + return err; \ + mutex_lock(&data->update_lock); \ + data->in_##reg[nr] = IN_TO_REG(val); \ + asb100_write_value(client, ASB100_REG_IN_##REG(nr), \ + data->in_##reg[nr]); \ + mutex_unlock(&data->update_lock); \ + return count; \ +} + +set_in_reg(MIN, min) +set_in_reg(MAX, max) + +#define sysfs_in(offset) \ +static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ + show_in, NULL, offset); \ +static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ + show_in_min, set_in_min, offset); \ +static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ + show_in_max, set_in_max, offset) + +sysfs_in(0); +sysfs_in(1); +sysfs_in(2); +sysfs_in(3); +sysfs_in(4); +sysfs_in(5); +sysfs_in(6); + +/* 3 Fans */ +static ssize_t show_fan(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], + DIV_FROM_REG(data->fan_div[nr]))); +} + +static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], + DIV_FROM_REG(data->fan_div[nr]))); +} + +static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); +} + +static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct asb100_data *data = i2c_get_clientdata(client); + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); + asb100_write_value(client, ASB100_REG_FAN_MIN(nr), data->fan_min[nr]); + mutex_unlock(&data->update_lock); + return count; +} + +/* + * Note: we save and restore the fan minimum here, because its value is + * determined in part by the fan divisor. This follows the principle of + * least surprise; the user doesn't expect the fan minimum to change just + * because the divisor changed. + */ +static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int nr = to_sensor_dev_attr(attr)->index; + struct i2c_client *client = to_i2c_client(dev); + struct asb100_data *data = i2c_get_clientdata(client); + unsigned long min; + int reg; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + + min = FAN_FROM_REG(data->fan_min[nr], + DIV_FROM_REG(data->fan_div[nr])); + data->fan_div[nr] = DIV_TO_REG(val); + + switch (nr) { + case 0: /* fan 1 */ + reg = asb100_read_value(client, ASB100_REG_VID_FANDIV); + reg = (reg & 0xcf) | (data->fan_div[0] << 4); + asb100_write_value(client, ASB100_REG_VID_FANDIV, reg); + break; + + case 1: /* fan 2 */ + reg = asb100_read_value(client, ASB100_REG_VID_FANDIV); + reg = (reg & 0x3f) | (data->fan_div[1] << 6); + asb100_write_value(client, ASB100_REG_VID_FANDIV, reg); + break; + + case 2: /* fan 3 */ + reg = asb100_read_value(client, ASB100_REG_PIN); + reg = (reg & 0x3f) | (data->fan_div[2] << 6); + asb100_write_value(client, ASB100_REG_PIN, reg); + break; + } + + data->fan_min[nr] = + FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); + asb100_write_value(client, ASB100_REG_FAN_MIN(nr), data->fan_min[nr]); + + mutex_unlock(&data->update_lock); + + return count; +} + +#define sysfs_fan(offset) \ +static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ + show_fan, NULL, offset - 1); \ +static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ + show_fan_min, set_fan_min, offset - 1); \ +static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ + show_fan_div, set_fan_div, offset - 1) + +sysfs_fan(1); +sysfs_fan(2); +sysfs_fan(3); + +/* 4 Temp. Sensors */ +static int sprintf_temp_from_reg(u16 reg, char *buf, int nr) +{ + int ret = 0; + + switch (nr) { + case 1: case 2: + ret = sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(reg)); + break; + case 0: case 3: default: + ret = sprintf(buf, "%d\n", TEMP_FROM_REG(reg)); + break; + } + return ret; +} + +#define show_temp_reg(reg) \ +static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ + char *buf) \ +{ \ + int nr = to_sensor_dev_attr(attr)->index; \ + struct asb100_data *data = asb100_update_device(dev); \ + return sprintf_temp_from_reg(data->reg[nr], buf, nr); \ +} + +show_temp_reg(temp); +show_temp_reg(temp_max); +show_temp_reg(temp_hyst); + +#define set_temp_reg(REG, reg) \ +static ssize_t set_##reg(struct device *dev, struct device_attribute *attr, \ + const char *buf, size_t count) \ +{ \ + int nr = to_sensor_dev_attr(attr)->index; \ + struct i2c_client *client = to_i2c_client(dev); \ + struct asb100_data *data = i2c_get_clientdata(client); \ + long val; \ + int err = kstrtol(buf, 10, &val); \ + if (err) \ + return err; \ + mutex_lock(&data->update_lock); \ + switch (nr) { \ + case 1: case 2: \ + data->reg[nr] = LM75_TEMP_TO_REG(val); \ + break; \ + case 0: case 3: default: \ + data->reg[nr] = TEMP_TO_REG(val); \ + break; \ + } \ + asb100_write_value(client, ASB100_REG_TEMP_##REG(nr+1), \ + data->reg[nr]); \ + mutex_unlock(&data->update_lock); \ + return count; \ +} + +set_temp_reg(MAX, temp_max); +set_temp_reg(HYST, temp_hyst); + +#define sysfs_temp(num) \ +static SENSOR_DEVICE_ATTR(temp##num##_input, S_IRUGO, \ + show_temp, NULL, num - 1); \ +static SENSOR_DEVICE_ATTR(temp##num##_max, S_IRUGO | S_IWUSR, \ + show_temp_max, set_temp_max, num - 1); \ +static SENSOR_DEVICE_ATTR(temp##num##_max_hyst, S_IRUGO | S_IWUSR, \ + show_temp_hyst, set_temp_hyst, num - 1) + +sysfs_temp(1); +sysfs_temp(2); +sysfs_temp(3); +sysfs_temp(4); + +/* VID */ +static ssize_t cpu0_vid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); +} + +static DEVICE_ATTR_RO(cpu0_vid); + +/* VRM */ +static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct asb100_data *data = dev_get_drvdata(dev); + return sprintf(buf, "%d\n", data->vrm); +} + +static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct asb100_data *data = dev_get_drvdata(dev); + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + if (val > 255) + return -EINVAL; + + data->vrm = val; + return count; +} + +/* Alarms */ +static DEVICE_ATTR_RW(vrm); + +static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%u\n", data->alarms); +} + +static DEVICE_ATTR_RO(alarms); + +static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int bitnr = to_sensor_dev_attr(attr)->index; + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); +} +static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); +static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); +static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); +static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); +static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); +static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); +static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); +static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11); +static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); +static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); +static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13); + +/* 1 PWM */ +static ssize_t pwm1_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%d\n", ASB100_PWM_FROM_REG(data->pwm & 0x0f)); +} + +static ssize_t pwm1_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct asb100_data *data = i2c_get_clientdata(client); + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->pwm &= 0x80; /* keep the enable bit */ + data->pwm |= (0x0f & ASB100_PWM_TO_REG(val)); + asb100_write_value(client, ASB100_REG_PWM1, data->pwm); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t pwm1_enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct asb100_data *data = asb100_update_device(dev); + return sprintf(buf, "%d\n", (data->pwm & 0x80) ? 1 : 0); +} + +static ssize_t pwm1_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct asb100_data *data = i2c_get_clientdata(client); + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->pwm &= 0x0f; /* keep the duty cycle bits */ + data->pwm |= (val ? 0x80 : 0x00); + asb100_write_value(client, ASB100_REG_PWM1, data->pwm); + mutex_unlock(&data->update_lock); + return count; +} + +static DEVICE_ATTR_RW(pwm1); +static DEVICE_ATTR_RW(pwm1_enable); + +static struct attribute *asb100_attributes[] = { + &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_in6_input.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, + + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan1_div.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, + &sensor_dev_attr_fan2_div.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan3_min.dev_attr.attr, + &sensor_dev_attr_fan3_div.dev_attr.attr, + + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp3_max.dev_attr.attr, + &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, + &sensor_dev_attr_temp4_input.dev_attr.attr, + &sensor_dev_attr_temp4_max.dev_attr.attr, + &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, + + &sensor_dev_attr_in0_alarm.dev_attr.attr, + &sensor_dev_attr_in1_alarm.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + &sensor_dev_attr_in3_alarm.dev_attr.attr, + &sensor_dev_attr_in4_alarm.dev_attr.attr, + &sensor_dev_attr_fan1_alarm.dev_attr.attr, + &sensor_dev_attr_fan2_alarm.dev_attr.attr, + &sensor_dev_attr_fan3_alarm.dev_attr.attr, + &sensor_dev_attr_temp1_alarm.dev_attr.attr, + &sensor_dev_attr_temp2_alarm.dev_attr.attr, + &sensor_dev_attr_temp3_alarm.dev_attr.attr, + + &dev_attr_cpu0_vid.attr, + &dev_attr_vrm.attr, + &dev_attr_alarms.attr, + &dev_attr_pwm1.attr, + &dev_attr_pwm1_enable.attr, + + NULL +}; + +static const struct attribute_group asb100_group = { + .attrs = asb100_attributes, +}; + +static int asb100_detect_subclients(struct i2c_client *client) +{ + int i, id, err; + int address = client->addr; + unsigned short sc_addr[2]; + struct asb100_data *data = i2c_get_clientdata(client); + struct i2c_adapter *adapter = client->adapter; + + id = i2c_adapter_id(adapter); + + if (force_subclients[0] == id && force_subclients[1] == address) { + for (i = 2; i <= 3; i++) { + if (force_subclients[i] < 0x48 || + force_subclients[i] > 0x4f) { + dev_err(&client->dev, + "invalid subclient address %d; must be 0x48-0x4f\n", + force_subclients[i]); + err = -ENODEV; + goto ERROR_SC_2; + } + } + asb100_write_value(client, ASB100_REG_I2C_SUBADDR, + (force_subclients[2] & 0x07) | + ((force_subclients[3] & 0x07) << 4)); + sc_addr[0] = force_subclients[2]; + sc_addr[1] = force_subclients[3]; + } else { + int val = asb100_read_value(client, ASB100_REG_I2C_SUBADDR); + sc_addr[0] = 0x48 + (val & 0x07); + sc_addr[1] = 0x48 + ((val >> 4) & 0x07); + } + + if (sc_addr[0] == sc_addr[1]) { + dev_err(&client->dev, + "duplicate addresses 0x%x for subclients\n", + sc_addr[0]); + err = -ENODEV; + goto ERROR_SC_2; + } + + data->lm75[0] = i2c_new_dummy_device(adapter, sc_addr[0]); + if (IS_ERR(data->lm75[0])) { + dev_err(&client->dev, + "subclient %d registration at address 0x%x failed.\n", + 1, sc_addr[0]); + err = PTR_ERR(data->lm75[0]); + goto ERROR_SC_2; + } + + data->lm75[1] = i2c_new_dummy_device(adapter, sc_addr[1]); + if (IS_ERR(data->lm75[1])) { + dev_err(&client->dev, + "subclient %d registration at address 0x%x failed.\n", + 2, sc_addr[1]); + err = PTR_ERR(data->lm75[1]); + goto ERROR_SC_3; + } + + return 0; + +/* Undo inits in case of errors */ +ERROR_SC_3: + i2c_unregister_device(data->lm75[0]); +ERROR_SC_2: + return err; +} + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int asb100_detect(struct i2c_client *client, + struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = client->adapter; + int val1, val2; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { + pr_debug("detect failed, smbus byte data not supported!\n"); + return -ENODEV; + } + + val1 = i2c_smbus_read_byte_data(client, ASB100_REG_BANK); + val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN); + + /* If we're in bank 0 */ + if ((!(val1 & 0x07)) && + /* Check for ASB100 ID (low byte) */ + (((!(val1 & 0x80)) && (val2 != 0x94)) || + /* Check for ASB100 ID (high byte ) */ + ((val1 & 0x80) && (val2 != 0x06)))) { + pr_debug("detect failed, bad chip id 0x%02x!\n", val2); + return -ENODEV; + } + + /* Put it now into bank 0 and Vendor ID High Byte */ + i2c_smbus_write_byte_data(client, ASB100_REG_BANK, + (i2c_smbus_read_byte_data(client, ASB100_REG_BANK) & 0x78) + | 0x80); + + /* Determine the chip type. */ + val1 = i2c_smbus_read_byte_data(client, ASB100_REG_WCHIPID); + val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN); + + if (val1 != 0x31 || val2 != 0x06) + return -ENODEV; + + strscpy(info->type, "asb100", I2C_NAME_SIZE); + + return 0; +} + +static int asb100_probe(struct i2c_client *client) +{ + int err; + struct asb100_data *data; + + data = devm_kzalloc(&client->dev, sizeof(struct asb100_data), + GFP_KERNEL); + if (!data) + return -ENOMEM; + + i2c_set_clientdata(client, data); + mutex_init(&data->lock); + mutex_init(&data->update_lock); + + /* Attach secondary lm75 clients */ + err = asb100_detect_subclients(client); + if (err) + return err; + + /* Initialize the chip */ + asb100_init_client(client); + + /* A few vars need to be filled upon startup */ + data->fan_min[0] = asb100_read_value(client, ASB100_REG_FAN_MIN(0)); + data->fan_min[1] = asb100_read_value(client, ASB100_REG_FAN_MIN(1)); + data->fan_min[2] = asb100_read_value(client, ASB100_REG_FAN_MIN(2)); + + /* Register sysfs hooks */ + err = sysfs_create_group(&client->dev.kobj, &asb100_group); + if (err) + goto ERROR3; + + data->hwmon_dev = hwmon_device_register(&client->dev); + if (IS_ERR(data->hwmon_dev)) { + err = PTR_ERR(data->hwmon_dev); + goto ERROR4; + } + + return 0; + +ERROR4: + sysfs_remove_group(&client->dev.kobj, &asb100_group); +ERROR3: + i2c_unregister_device(data->lm75[1]); + i2c_unregister_device(data->lm75[0]); + return err; +} + +static void asb100_remove(struct i2c_client *client) +{ + struct asb100_data *data = i2c_get_clientdata(client); + + hwmon_device_unregister(data->hwmon_dev); + sysfs_remove_group(&client->dev.kobj, &asb100_group); + + i2c_unregister_device(data->lm75[1]); + i2c_unregister_device(data->lm75[0]); +} + +/* + * The SMBus locks itself, usually, but nothing may access the chip between + * bank switches. + */ +static int asb100_read_value(struct i2c_client *client, u16 reg) +{ + struct asb100_data *data = i2c_get_clientdata(client); + struct i2c_client *cl; + int res, bank; + + mutex_lock(&data->lock); + + bank = (reg >> 8) & 0x0f; + if (bank > 2) + /* switch banks */ + i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); + + if (bank == 0 || bank > 2) { + res = i2c_smbus_read_byte_data(client, reg & 0xff); + } else { + /* switch to subclient */ + cl = data->lm75[bank - 1]; + + /* convert from ISA to LM75 I2C addresses */ + switch (reg & 0xff) { + case 0x50: /* TEMP */ + res = i2c_smbus_read_word_swapped(cl, 0); + break; + case 0x52: /* CONFIG */ + res = i2c_smbus_read_byte_data(cl, 1); + break; + case 0x53: /* HYST */ + res = i2c_smbus_read_word_swapped(cl, 2); + break; + case 0x55: /* MAX */ + default: + res = i2c_smbus_read_word_swapped(cl, 3); + break; + } + } + + if (bank > 2) + i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); + + mutex_unlock(&data->lock); + + return res; +} + +static void asb100_write_value(struct i2c_client *client, u16 reg, u16 value) +{ + struct asb100_data *data = i2c_get_clientdata(client); + struct i2c_client *cl; + int bank; + + mutex_lock(&data->lock); + + bank = (reg >> 8) & 0x0f; + if (bank > 2) + /* switch banks */ + i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); + + if (bank == 0 || bank > 2) { + i2c_smbus_write_byte_data(client, reg & 0xff, value & 0xff); + } else { + /* switch to subclient */ + cl = data->lm75[bank - 1]; + + /* convert from ISA to LM75 I2C addresses */ + switch (reg & 0xff) { + case 0x52: /* CONFIG */ + i2c_smbus_write_byte_data(cl, 1, value & 0xff); + break; + case 0x53: /* HYST */ + i2c_smbus_write_word_swapped(cl, 2, value); + break; + case 0x55: /* MAX */ + i2c_smbus_write_word_swapped(cl, 3, value); + break; + } + } + + if (bank > 2) + i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); + + mutex_unlock(&data->lock); +} + +static void asb100_init_client(struct i2c_client *client) +{ + struct asb100_data *data = i2c_get_clientdata(client); + + data->vrm = vid_which_vrm(); + + /* Start monitoring */ + asb100_write_value(client, ASB100_REG_CONFIG, + (asb100_read_value(client, ASB100_REG_CONFIG) & 0xf7) | 0x01); +} + +static struct asb100_data *asb100_update_device(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct asb100_data *data = i2c_get_clientdata(client); + int i; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + HZ + HZ / 2) + || !data->valid) { + + dev_dbg(&client->dev, "starting device update...\n"); + + /* 7 voltage inputs */ + for (i = 0; i < 7; i++) { + data->in[i] = asb100_read_value(client, + ASB100_REG_IN(i)); + data->in_min[i] = asb100_read_value(client, + ASB100_REG_IN_MIN(i)); + data->in_max[i] = asb100_read_value(client, + ASB100_REG_IN_MAX(i)); + } + + /* 3 fan inputs */ + for (i = 0; i < 3; i++) { + data->fan[i] = asb100_read_value(client, + ASB100_REG_FAN(i)); + data->fan_min[i] = asb100_read_value(client, + ASB100_REG_FAN_MIN(i)); + } + + /* 4 temperature inputs */ + for (i = 1; i <= 4; i++) { + data->temp[i-1] = asb100_read_value(client, + ASB100_REG_TEMP(i)); + data->temp_max[i-1] = asb100_read_value(client, + ASB100_REG_TEMP_MAX(i)); + data->temp_hyst[i-1] = asb100_read_value(client, + ASB100_REG_TEMP_HYST(i)); + } + + /* VID and fan divisors */ + i = asb100_read_value(client, ASB100_REG_VID_FANDIV); + data->vid = i & 0x0f; + data->vid |= (asb100_read_value(client, + ASB100_REG_CHIPID) & 0x01) << 4; + data->fan_div[0] = (i >> 4) & 0x03; + data->fan_div[1] = (i >> 6) & 0x03; + data->fan_div[2] = (asb100_read_value(client, + ASB100_REG_PIN) >> 6) & 0x03; + + /* PWM */ + data->pwm = asb100_read_value(client, ASB100_REG_PWM1); + + /* alarms */ + data->alarms = asb100_read_value(client, ASB100_REG_ALARM1) + + (asb100_read_value(client, ASB100_REG_ALARM2) << 8); + + data->last_updated = jiffies; + data->valid = true; + + dev_dbg(&client->dev, "... device update complete\n"); + } + + mutex_unlock(&data->update_lock); + + return data; +} + +module_i2c_driver(asb100_driver); + +MODULE_AUTHOR("Mark M. Hoffman "); +MODULE_DESCRIPTION("ASB100 Bach driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3