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/gl520sm.c | 910 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 910 insertions(+) create mode 100644 drivers/hwmon/gl520sm.c (limited to 'drivers/hwmon/gl520sm.c') diff --git a/drivers/hwmon/gl520sm.c b/drivers/hwmon/gl520sm.c new file mode 100644 index 000000000..394da4ac9 --- /dev/null +++ b/drivers/hwmon/gl520sm.c @@ -0,0 +1,910 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware + * monitoring + * Copyright (c) 1998, 1999 Frodo Looijaard , + * Kyösti Mälkki + * Copyright (c) 2005 Maarten Deprez + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Type of the extra sensor */ +static unsigned short extra_sensor_type; +module_param(extra_sensor_type, ushort, 0); +MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); + +/* Addresses to scan */ +static const unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; + +/* + * Many GL520 constants specified below + * One of the inputs can be configured as either temp or voltage. + * That's why _TEMP2 and _IN4 access the same register + */ + +/* The GL520 registers */ +#define GL520_REG_CHIP_ID 0x00 +#define GL520_REG_REVISION 0x01 +#define GL520_REG_CONF 0x03 +#define GL520_REG_MASK 0x11 + +#define GL520_REG_VID_INPUT 0x02 + +static const u8 GL520_REG_IN_INPUT[] = { 0x15, 0x14, 0x13, 0x0d, 0x0e }; +static const u8 GL520_REG_IN_LIMIT[] = { 0x0c, 0x09, 0x0a, 0x0b }; +static const u8 GL520_REG_IN_MIN[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x18 }; +static const u8 GL520_REG_IN_MAX[] = { 0x0c, 0x09, 0x0a, 0x0b, 0x17 }; + +static const u8 GL520_REG_TEMP_INPUT[] = { 0x04, 0x0e }; +static const u8 GL520_REG_TEMP_MAX[] = { 0x05, 0x17 }; +static const u8 GL520_REG_TEMP_MAX_HYST[] = { 0x06, 0x18 }; + +#define GL520_REG_FAN_INPUT 0x07 +#define GL520_REG_FAN_MIN 0x08 +#define GL520_REG_FAN_DIV 0x0f +#define GL520_REG_FAN_OFF GL520_REG_FAN_DIV + +#define GL520_REG_ALARMS 0x12 +#define GL520_REG_BEEP_MASK 0x10 +#define GL520_REG_BEEP_ENABLE GL520_REG_CONF + +/* Client data */ +struct gl520_data { + struct i2c_client *client; + const struct attribute_group *groups[3]; + struct mutex update_lock; + bool valid; /* false until the following fields are valid */ + unsigned long last_updated; /* in jiffies */ + + u8 vid; + u8 vrm; + u8 in_input[5]; /* [0] = VVD */ + u8 in_min[5]; /* [0] = VDD */ + u8 in_max[5]; /* [0] = VDD */ + u8 fan_input[2]; + u8 fan_min[2]; + u8 fan_div[2]; + u8 fan_off; + u8 temp_input[2]; + u8 temp_max[2]; + u8 temp_max_hyst[2]; + u8 alarms; + u8 beep_enable; + u8 beep_mask; + u8 alarm_mask; + u8 two_temps; +}; + +/* + * Registers 0x07 to 0x0c are word-sized, others are byte-sized + * GL520 uses a high-byte first convention + */ +static int gl520_read_value(struct i2c_client *client, u8 reg) +{ + if ((reg >= 0x07) && (reg <= 0x0c)) + return i2c_smbus_read_word_swapped(client, reg); + else + return i2c_smbus_read_byte_data(client, reg); +} + +static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) +{ + if ((reg >= 0x07) && (reg <= 0x0c)) + return i2c_smbus_write_word_swapped(client, reg, value); + else + return i2c_smbus_write_byte_data(client, reg, value); +} + +static struct gl520_data *gl520_update_device(struct device *dev) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int val, i; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { + + dev_dbg(&client->dev, "Starting gl520sm update\n"); + + data->alarms = gl520_read_value(client, GL520_REG_ALARMS); + data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); + data->vid = gl520_read_value(client, + GL520_REG_VID_INPUT) & 0x1f; + + for (i = 0; i < 4; i++) { + data->in_input[i] = gl520_read_value(client, + GL520_REG_IN_INPUT[i]); + val = gl520_read_value(client, GL520_REG_IN_LIMIT[i]); + data->in_min[i] = val & 0xff; + data->in_max[i] = (val >> 8) & 0xff; + } + + val = gl520_read_value(client, GL520_REG_FAN_INPUT); + data->fan_input[0] = (val >> 8) & 0xff; + data->fan_input[1] = val & 0xff; + + val = gl520_read_value(client, GL520_REG_FAN_MIN); + data->fan_min[0] = (val >> 8) & 0xff; + data->fan_min[1] = val & 0xff; + + data->temp_input[0] = gl520_read_value(client, + GL520_REG_TEMP_INPUT[0]); + data->temp_max[0] = gl520_read_value(client, + GL520_REG_TEMP_MAX[0]); + data->temp_max_hyst[0] = gl520_read_value(client, + GL520_REG_TEMP_MAX_HYST[0]); + + val = gl520_read_value(client, GL520_REG_FAN_DIV); + data->fan_div[0] = (val >> 6) & 0x03; + data->fan_div[1] = (val >> 4) & 0x03; + data->fan_off = (val >> 2) & 0x01; + + data->alarms &= data->alarm_mask; + + val = gl520_read_value(client, GL520_REG_CONF); + data->beep_enable = !((val >> 2) & 1); + + /* Temp1 and Vin4 are the same input */ + if (data->two_temps) { + data->temp_input[1] = gl520_read_value(client, + GL520_REG_TEMP_INPUT[1]); + data->temp_max[1] = gl520_read_value(client, + GL520_REG_TEMP_MAX[1]); + data->temp_max_hyst[1] = gl520_read_value(client, + GL520_REG_TEMP_MAX_HYST[1]); + } else { + data->in_input[4] = gl520_read_value(client, + GL520_REG_IN_INPUT[4]); + data->in_min[4] = gl520_read_value(client, + GL520_REG_IN_MIN[4]); + data->in_max[4] = gl520_read_value(client, + GL520_REG_IN_MAX[4]); + } + + data->last_updated = jiffies; + data->valid = true; + } + + mutex_unlock(&data->update_lock); + + return data; +} + +/* + * Sysfs stuff + */ + +static ssize_t cpu0_vid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gl520_data *data = gl520_update_device(dev); + return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); +} +static DEVICE_ATTR_RO(cpu0_vid); + +#define VDD_FROM_REG(val) DIV_ROUND_CLOSEST((val) * 95, 4) +#define VDD_CLAMP(val) clamp_val(val, 0, 255 * 95 / 4) +#define VDD_TO_REG(val) DIV_ROUND_CLOSEST(VDD_CLAMP(val) * 4, 95) + +#define IN_FROM_REG(val) ((val) * 19) +#define IN_CLAMP(val) clamp_val(val, 0, 255 * 19) +#define IN_TO_REG(val) DIV_ROUND_CLOSEST(IN_CLAMP(val), 19) + +static ssize_t in_input_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + u8 r = data->in_input[n]; + + if (n == 0) + return sprintf(buf, "%d\n", VDD_FROM_REG(r)); + else + return sprintf(buf, "%d\n", IN_FROM_REG(r)); +} + +static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + u8 r = data->in_min[n]; + + if (n == 0) + return sprintf(buf, "%d\n", VDD_FROM_REG(r)); + else + return sprintf(buf, "%d\n", IN_FROM_REG(r)); +} + +static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + u8 r = data->in_max[n]; + + if (n == 0) + return sprintf(buf, "%d\n", VDD_FROM_REG(r)); + else + return sprintf(buf, "%d\n", IN_FROM_REG(r)); +} + +static ssize_t in_min_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int n = to_sensor_dev_attr(attr)->index; + u8 r; + long v; + int err; + + err = kstrtol(buf, 10, &v); + if (err) + return err; + + mutex_lock(&data->update_lock); + + if (n == 0) + r = VDD_TO_REG(v); + else + r = IN_TO_REG(v); + + data->in_min[n] = r; + + if (n < 4) + gl520_write_value(client, GL520_REG_IN_MIN[n], + (gl520_read_value(client, GL520_REG_IN_MIN[n]) + & ~0xff) | r); + else + gl520_write_value(client, GL520_REG_IN_MIN[n], r); + + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t in_max_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int n = to_sensor_dev_attr(attr)->index; + u8 r; + long v; + int err; + + err = kstrtol(buf, 10, &v); + if (err) + return err; + + if (n == 0) + r = VDD_TO_REG(v); + else + r = IN_TO_REG(v); + + mutex_lock(&data->update_lock); + + data->in_max[n] = r; + + if (n < 4) + gl520_write_value(client, GL520_REG_IN_MAX[n], + (gl520_read_value(client, GL520_REG_IN_MAX[n]) + & ~0xff00) | (r << 8)); + else + gl520_write_value(client, GL520_REG_IN_MAX[n], r); + + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RO(in0_input, in_input, 0); +static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1); +static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2); +static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3); +static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4); +static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); +static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); +static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); +static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); +static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); +static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); +static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); +static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); +static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); +static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); + +#define DIV_FROM_REG(val) (1 << (val)) +#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : (480000 / ((val) << (div)))) + +#define FAN_BASE(div) (480000 >> (div)) +#define FAN_CLAMP(val, div) clamp_val(val, FAN_BASE(div) / 255, \ + FAN_BASE(div)) +#define FAN_TO_REG(val, div) ((val) == 0 ? 0 : \ + DIV_ROUND_CLOSEST(480000, \ + FAN_CLAMP(val, div) << (div))) + +static ssize_t fan_input_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n], + data->fan_div[n])); +} + +static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n], + data->fan_div[n])); +} + +static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n])); +} + +static ssize_t fan1_off_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gl520_data *data = gl520_update_device(dev); + return sprintf(buf, "%d\n", data->fan_off); +} + +static ssize_t fan_min_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int n = to_sensor_dev_attr(attr)->index; + u8 r; + unsigned long v; + int err; + + err = kstrtoul(buf, 10, &v); + if (err) + return err; + + mutex_lock(&data->update_lock); + r = FAN_TO_REG(v, data->fan_div[n]); + data->fan_min[n] = r; + + if (n == 0) + gl520_write_value(client, GL520_REG_FAN_MIN, + (gl520_read_value(client, GL520_REG_FAN_MIN) + & ~0xff00) | (r << 8)); + else + gl520_write_value(client, GL520_REG_FAN_MIN, + (gl520_read_value(client, GL520_REG_FAN_MIN) + & ~0xff) | r); + + data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); + if (data->fan_min[n] == 0) + data->alarm_mask &= (n == 0) ? ~0x20 : ~0x40; + else + data->alarm_mask |= (n == 0) ? 0x20 : 0x40; + data->beep_mask &= data->alarm_mask; + gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); + + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t fan_div_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int n = to_sensor_dev_attr(attr)->index; + u8 r; + unsigned long v; + int err; + + err = kstrtoul(buf, 10, &v); + if (err) + return err; + + switch (v) { + case 1: + r = 0; + break; + case 2: + r = 1; + break; + case 4: + r = 2; + break; + case 8: + r = 3; + break; + default: + dev_err(&client->dev, + "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); + return -EINVAL; + } + + mutex_lock(&data->update_lock); + data->fan_div[n] = r; + + if (n == 0) + gl520_write_value(client, GL520_REG_FAN_DIV, + (gl520_read_value(client, GL520_REG_FAN_DIV) + & ~0xc0) | (r << 6)); + else + gl520_write_value(client, GL520_REG_FAN_DIV, + (gl520_read_value(client, GL520_REG_FAN_DIV) + & ~0x30) | (r << 4)); + + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t fan1_off_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 r; + unsigned long v; + int err; + + err = kstrtoul(buf, 10, &v); + if (err) + return err; + + r = (v ? 1 : 0); + + mutex_lock(&data->update_lock); + data->fan_off = r; + gl520_write_value(client, GL520_REG_FAN_OFF, + (gl520_read_value(client, GL520_REG_FAN_OFF) + & ~0x0c) | (r << 2)); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); +static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); +static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); +static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); +static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); +static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); +static DEVICE_ATTR_RW(fan1_off); + +#define TEMP_FROM_REG(val) (((val) - 130) * 1000) +#define TEMP_CLAMP(val) clamp_val(val, -130000, 125000) +#define TEMP_TO_REG(val) (DIV_ROUND_CLOSEST(TEMP_CLAMP(val), 1000) + 130) + +static ssize_t temp_input_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n])); +} + +static ssize_t temp_max_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n])); +} + +static ssize_t temp_max_hyst_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int n = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n])); +} + +static ssize_t temp_max_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int n = to_sensor_dev_attr(attr)->index; + long v; + int err; + + err = kstrtol(buf, 10, &v); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->temp_max[n] = TEMP_TO_REG(v); + gl520_write_value(client, GL520_REG_TEMP_MAX[n], data->temp_max[n]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t temp_max_hyst_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int n = to_sensor_dev_attr(attr)->index; + long v; + int err; + + err = kstrtol(buf, 10, &v); + if (err) + return err; + + mutex_lock(&data->update_lock); + data->temp_max_hyst[n] = TEMP_TO_REG(v); + gl520_write_value(client, GL520_REG_TEMP_MAX_HYST[n], + data->temp_max_hyst[n]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); +static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); +static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1); +static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, temp_max_hyst, 0); +static SENSOR_DEVICE_ATTR_RW(temp2_max_hyst, temp_max_hyst, 1); + +static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct gl520_data *data = gl520_update_device(dev); + return sprintf(buf, "%d\n", data->alarms); +} + +static ssize_t beep_enable_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gl520_data *data = gl520_update_device(dev); + return sprintf(buf, "%d\n", data->beep_enable); +} + +static ssize_t beep_mask_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gl520_data *data = gl520_update_device(dev); + return sprintf(buf, "%d\n", data->beep_mask); +} + +static ssize_t beep_enable_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + u8 r; + unsigned long v; + int err; + + err = kstrtoul(buf, 10, &v); + if (err) + return err; + + r = (v ? 0 : 1); + + mutex_lock(&data->update_lock); + data->beep_enable = !r; + gl520_write_value(client, GL520_REG_BEEP_ENABLE, + (gl520_read_value(client, GL520_REG_BEEP_ENABLE) + & ~0x04) | (r << 2)); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t beep_mask_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + unsigned long r; + int err; + + err = kstrtoul(buf, 10, &r); + if (err) + return err; + + mutex_lock(&data->update_lock); + r &= data->alarm_mask; + data->beep_mask = r; + gl520_write_value(client, GL520_REG_BEEP_MASK, r); + mutex_unlock(&data->update_lock); + return count; +} + +static DEVICE_ATTR_RO(alarms); +static DEVICE_ATTR_RW(beep_enable); +static DEVICE_ATTR_RW(beep_mask); + +static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int bit_nr = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", (data->alarms >> bit_nr) & 1); +} + +static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); +static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); +static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); +static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); +static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); +static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 5); +static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 6); +static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 7); +static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 7); + +static ssize_t beep_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int bitnr = to_sensor_dev_attr(attr)->index; + struct gl520_data *data = gl520_update_device(dev); + + return sprintf(buf, "%d\n", (data->beep_mask >> bitnr) & 1); +} + +static ssize_t beep_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct gl520_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int bitnr = to_sensor_dev_attr(attr)->index; + unsigned long bit; + + int err; + + err = kstrtoul(buf, 10, &bit); + if (err) + return err; + if (bit & ~1) + return -EINVAL; + + mutex_lock(&data->update_lock); + data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); + if (bit) + data->beep_mask |= (1 << bitnr); + else + data->beep_mask &= ~(1 << bitnr); + gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_RW(in0_beep, beep, 0); +static SENSOR_DEVICE_ATTR_RW(in1_beep, beep, 1); +static SENSOR_DEVICE_ATTR_RW(in2_beep, beep, 2); +static SENSOR_DEVICE_ATTR_RW(in3_beep, beep, 3); +static SENSOR_DEVICE_ATTR_RW(temp1_beep, beep, 4); +static SENSOR_DEVICE_ATTR_RW(fan1_beep, beep, 5); +static SENSOR_DEVICE_ATTR_RW(fan2_beep, beep, 6); +static SENSOR_DEVICE_ATTR_RW(temp2_beep, beep, 7); +static SENSOR_DEVICE_ATTR_RW(in4_beep, beep, 7); + +static struct attribute *gl520_attributes[] = { + &dev_attr_cpu0_vid.attr, + + &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_in0_alarm.dev_attr.attr, + &sensor_dev_attr_in0_beep.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_in1_alarm.dev_attr.attr, + &sensor_dev_attr_in1_beep.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_in2_alarm.dev_attr.attr, + &sensor_dev_attr_in2_beep.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_in3_alarm.dev_attr.attr, + &sensor_dev_attr_in3_beep.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_fan1_alarm.dev_attr.attr, + &sensor_dev_attr_fan1_beep.dev_attr.attr, + &dev_attr_fan1_off.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_fan2_alarm.dev_attr.attr, + &sensor_dev_attr_fan2_beep.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_temp1_alarm.dev_attr.attr, + &sensor_dev_attr_temp1_beep.dev_attr.attr, + + &dev_attr_alarms.attr, + &dev_attr_beep_enable.attr, + &dev_attr_beep_mask.attr, + NULL +}; + +static const struct attribute_group gl520_group = { + .attrs = gl520_attributes, +}; + +static struct attribute *gl520_attributes_in4[] = { + &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_in4_alarm.dev_attr.attr, + &sensor_dev_attr_in4_beep.dev_attr.attr, + NULL +}; + +static struct attribute *gl520_attributes_temp2[] = { + &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_temp2_alarm.dev_attr.attr, + &sensor_dev_attr_temp2_beep.dev_attr.attr, + NULL +}; + +static const struct attribute_group gl520_group_in4 = { + .attrs = gl520_attributes_in4, +}; + +static const struct attribute_group gl520_group_temp2 = { + .attrs = gl520_attributes_temp2, +}; + + +/* + * Real code + */ + +/* Return 0 if detection is successful, -ENODEV otherwise */ +static int gl520_detect(struct i2c_client *client, struct i2c_board_info *info) +{ + struct i2c_adapter *adapter = client->adapter; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | + I2C_FUNC_SMBUS_WORD_DATA)) + return -ENODEV; + + /* Determine the chip type. */ + if ((gl520_read_value(client, GL520_REG_CHIP_ID) != 0x20) || + ((gl520_read_value(client, GL520_REG_REVISION) & 0x7f) != 0x00) || + ((gl520_read_value(client, GL520_REG_CONF) & 0x80) != 0x00)) { + dev_dbg(&client->dev, "Unknown chip type, skipping\n"); + return -ENODEV; + } + + strscpy(info->type, "gl520sm", I2C_NAME_SIZE); + + return 0; +} + +/* Called when we have found a new GL520SM. */ +static void gl520_init_client(struct i2c_client *client) +{ + struct gl520_data *data = i2c_get_clientdata(client); + u8 oldconf, conf; + + conf = oldconf = gl520_read_value(client, GL520_REG_CONF); + + data->alarm_mask = 0xff; + data->vrm = vid_which_vrm(); + + if (extra_sensor_type == 1) + conf &= ~0x10; + else if (extra_sensor_type == 2) + conf |= 0x10; + data->two_temps = !(conf & 0x10); + + /* If IRQ# is disabled, we can safely force comparator mode */ + if (!(conf & 0x20)) + conf &= 0xf7; + + /* Enable monitoring if needed */ + conf |= 0x40; + + if (conf != oldconf) + gl520_write_value(client, GL520_REG_CONF, conf); + + gl520_update_device(&(client->dev)); + + if (data->fan_min[0] == 0) + data->alarm_mask &= ~0x20; + if (data->fan_min[1] == 0) + data->alarm_mask &= ~0x40; + + data->beep_mask &= data->alarm_mask; + gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); +} + +static int gl520_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct gl520_data *data; + + data = devm_kzalloc(dev, sizeof(struct gl520_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + i2c_set_clientdata(client, data); + mutex_init(&data->update_lock); + data->client = client; + + /* Initialize the GL520SM chip */ + gl520_init_client(client); + + /* sysfs hooks */ + data->groups[0] = &gl520_group; + + if (data->two_temps) + data->groups[1] = &gl520_group_temp2; + else + data->groups[1] = &gl520_group_in4; + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, + data, data->groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id gl520_id[] = { + { "gl520sm", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, gl520_id); + +static struct i2c_driver gl520_driver = { + .class = I2C_CLASS_HWMON, + .driver = { + .name = "gl520sm", + }, + .probe_new = gl520_probe, + .id_table = gl520_id, + .detect = gl520_detect, + .address_list = normal_i2c, +}; + +module_i2c_driver(gl520_driver); + +MODULE_AUTHOR("Frodo Looijaard , " + "Kyösti Mälkki , " + "Maarten Deprez "); +MODULE_DESCRIPTION("GL520SM driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3