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/pmbus/adm1275.c | 844 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 844 insertions(+) create mode 100644 drivers/hwmon/pmbus/adm1275.c (limited to 'drivers/hwmon/pmbus/adm1275.c') diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c new file mode 100644 index 000000000..3b07bfb43 --- /dev/null +++ b/drivers/hwmon/pmbus/adm1275.c @@ -0,0 +1,844 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller + * and Digital Power Monitor + * + * Copyright (c) 2011 Ericsson AB. + * Copyright (c) 2018 Guenter Roeck + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "pmbus.h" + +enum chips { adm1075, adm1272, adm1275, adm1276, adm1278, adm1293, adm1294 }; + +#define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0) +#define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5) +#define ADM1293_MFR_STATUS_VAUX_OV_WARN BIT(6) + +#define ADM1275_PEAK_IOUT 0xd0 +#define ADM1275_PEAK_VIN 0xd1 +#define ADM1275_PEAK_VOUT 0xd2 +#define ADM1275_PMON_CONFIG 0xd4 + +#define ADM1275_VIN_VOUT_SELECT BIT(6) +#define ADM1275_VRANGE BIT(5) +#define ADM1075_IRANGE_50 BIT(4) +#define ADM1075_IRANGE_25 BIT(3) +#define ADM1075_IRANGE_MASK (BIT(3) | BIT(4)) + +#define ADM1272_IRANGE BIT(0) + +#define ADM1278_TEMP1_EN BIT(3) +#define ADM1278_VIN_EN BIT(2) +#define ADM1278_VOUT_EN BIT(1) + +#define ADM1293_IRANGE_25 0 +#define ADM1293_IRANGE_50 BIT(6) +#define ADM1293_IRANGE_100 BIT(7) +#define ADM1293_IRANGE_200 (BIT(6) | BIT(7)) +#define ADM1293_IRANGE_MASK (BIT(6) | BIT(7)) + +#define ADM1293_VIN_SEL_012 BIT(2) +#define ADM1293_VIN_SEL_074 BIT(3) +#define ADM1293_VIN_SEL_210 (BIT(2) | BIT(3)) +#define ADM1293_VIN_SEL_MASK (BIT(2) | BIT(3)) + +#define ADM1293_VAUX_EN BIT(1) + +#define ADM1278_PEAK_TEMP 0xd7 +#define ADM1275_IOUT_WARN2_LIMIT 0xd7 +#define ADM1275_DEVICE_CONFIG 0xd8 + +#define ADM1275_IOUT_WARN2_SELECT BIT(4) + +#define ADM1276_PEAK_PIN 0xda +#define ADM1075_READ_VAUX 0xdd +#define ADM1075_VAUX_OV_WARN_LIMIT 0xde +#define ADM1075_VAUX_UV_WARN_LIMIT 0xdf +#define ADM1293_IOUT_MIN 0xe3 +#define ADM1293_PIN_MIN 0xe4 +#define ADM1075_VAUX_STATUS 0xf6 + +#define ADM1075_VAUX_OV_WARN BIT(7) +#define ADM1075_VAUX_UV_WARN BIT(6) + +#define ADM1275_VI_AVG_SHIFT 0 +#define ADM1275_VI_AVG_MASK GENMASK(ADM1275_VI_AVG_SHIFT + 2, \ + ADM1275_VI_AVG_SHIFT) +#define ADM1275_SAMPLES_AVG_MAX 128 + +#define ADM1278_PWR_AVG_SHIFT 11 +#define ADM1278_PWR_AVG_MASK GENMASK(ADM1278_PWR_AVG_SHIFT + 2, \ + ADM1278_PWR_AVG_SHIFT) +#define ADM1278_VI_AVG_SHIFT 8 +#define ADM1278_VI_AVG_MASK GENMASK(ADM1278_VI_AVG_SHIFT + 2, \ + ADM1278_VI_AVG_SHIFT) + +struct adm1275_data { + int id; + bool have_oc_fault; + bool have_uc_fault; + bool have_vout; + bool have_vaux_status; + bool have_mfr_vaux_status; + bool have_iout_min; + bool have_pin_min; + bool have_pin_max; + bool have_temp_max; + bool have_power_sampling; + struct pmbus_driver_info info; +}; + +#define to_adm1275_data(x) container_of(x, struct adm1275_data, info) + +struct coefficients { + s16 m; + s16 b; + s16 R; +}; + +static const struct coefficients adm1075_coefficients[] = { + [0] = { 27169, 0, -1 }, /* voltage */ + [1] = { 806, 20475, -1 }, /* current, irange25 */ + [2] = { 404, 20475, -1 }, /* current, irange50 */ + [3] = { 8549, 0, -1 }, /* power, irange25 */ + [4] = { 4279, 0, -1 }, /* power, irange50 */ +}; + +static const struct coefficients adm1272_coefficients[] = { + [0] = { 6770, 0, -2 }, /* voltage, vrange 60V */ + [1] = { 4062, 0, -2 }, /* voltage, vrange 100V */ + [2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */ + [3] = { 663, 20480, -1 }, /* current, vsense range 30mV */ + [4] = { 3512, 0, -2 }, /* power, vrange 60V, irange 15mV */ + [5] = { 21071, 0, -3 }, /* power, vrange 100V, irange 15mV */ + [6] = { 17561, 0, -3 }, /* power, vrange 60V, irange 30mV */ + [7] = { 10535, 0, -3 }, /* power, vrange 100V, irange 30mV */ + [8] = { 42, 31871, -1 }, /* temperature */ + +}; + +static const struct coefficients adm1275_coefficients[] = { + [0] = { 19199, 0, -2 }, /* voltage, vrange set */ + [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ + [2] = { 807, 20475, -1 }, /* current */ +}; + +static const struct coefficients adm1276_coefficients[] = { + [0] = { 19199, 0, -2 }, /* voltage, vrange set */ + [1] = { 6720, 0, -1 }, /* voltage, vrange not set */ + [2] = { 807, 20475, -1 }, /* current */ + [3] = { 6043, 0, -2 }, /* power, vrange set */ + [4] = { 2115, 0, -1 }, /* power, vrange not set */ +}; + +static const struct coefficients adm1278_coefficients[] = { + [0] = { 19599, 0, -2 }, /* voltage */ + [1] = { 800, 20475, -1 }, /* current */ + [2] = { 6123, 0, -2 }, /* power */ + [3] = { 42, 31880, -1 }, /* temperature */ +}; + +static const struct coefficients adm1293_coefficients[] = { + [0] = { 3333, -1, 0 }, /* voltage, vrange 1.2V */ + [1] = { 5552, -5, -1 }, /* voltage, vrange 7.4V */ + [2] = { 19604, -50, -2 }, /* voltage, vrange 21V */ + [3] = { 8000, -100, -2 }, /* current, irange25 */ + [4] = { 4000, -100, -2 }, /* current, irange50 */ + [5] = { 20000, -1000, -3 }, /* current, irange100 */ + [6] = { 10000, -1000, -3 }, /* current, irange200 */ + [7] = { 10417, 0, -1 }, /* power, 1.2V, irange25 */ + [8] = { 5208, 0, -1 }, /* power, 1.2V, irange50 */ + [9] = { 26042, 0, -2 }, /* power, 1.2V, irange100 */ + [10] = { 13021, 0, -2 }, /* power, 1.2V, irange200 */ + [11] = { 17351, 0, -2 }, /* power, 7.4V, irange25 */ + [12] = { 8676, 0, -2 }, /* power, 7.4V, irange50 */ + [13] = { 4338, 0, -2 }, /* power, 7.4V, irange100 */ + [14] = { 21689, 0, -3 }, /* power, 7.4V, irange200 */ + [15] = { 6126, 0, -2 }, /* power, 21V, irange25 */ + [16] = { 30631, 0, -3 }, /* power, 21V, irange50 */ + [17] = { 15316, 0, -3 }, /* power, 21V, irange100 */ + [18] = { 7658, 0, -3 }, /* power, 21V, irange200 */ +}; + +static int adm1275_read_pmon_config(const struct adm1275_data *data, + struct i2c_client *client, bool is_power) +{ + int shift, ret; + u16 mask; + + /* + * The PMON configuration register is a 16-bit register only on chips + * supporting power average sampling. On other chips it is an 8-bit + * register. + */ + if (data->have_power_sampling) { + ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG); + mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK; + shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT; + } else { + ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); + mask = ADM1275_VI_AVG_MASK; + shift = ADM1275_VI_AVG_SHIFT; + } + if (ret < 0) + return ret; + + return (ret & mask) >> shift; +} + +static int adm1275_write_pmon_config(const struct adm1275_data *data, + struct i2c_client *client, + bool is_power, u16 word) +{ + int shift, ret; + u16 mask; + + if (data->have_power_sampling) { + ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG); + mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK; + shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT; + } else { + ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG); + mask = ADM1275_VI_AVG_MASK; + shift = ADM1275_VI_AVG_SHIFT; + } + if (ret < 0) + return ret; + + word = (ret & ~mask) | ((word << shift) & mask); + if (data->have_power_sampling) + ret = i2c_smbus_write_word_data(client, ADM1275_PMON_CONFIG, + word); + else + ret = i2c_smbus_write_byte_data(client, ADM1275_PMON_CONFIG, + word); + + return ret; +} + +static int adm1275_read_word_data(struct i2c_client *client, int page, + int phase, int reg) +{ + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + const struct adm1275_data *data = to_adm1275_data(info); + int ret = 0; + + if (page > 0) + return -ENXIO; + + switch (reg) { + case PMBUS_IOUT_UC_FAULT_LIMIT: + if (!data->have_uc_fault) + return -ENXIO; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1275_IOUT_WARN2_LIMIT); + break; + case PMBUS_IOUT_OC_FAULT_LIMIT: + if (!data->have_oc_fault) + return -ENXIO; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1275_IOUT_WARN2_LIMIT); + break; + case PMBUS_VOUT_OV_WARN_LIMIT: + if (data->have_vout) + return -ENODATA; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1075_VAUX_OV_WARN_LIMIT); + break; + case PMBUS_VOUT_UV_WARN_LIMIT: + if (data->have_vout) + return -ENODATA; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1075_VAUX_UV_WARN_LIMIT); + break; + case PMBUS_READ_VOUT: + if (data->have_vout) + return -ENODATA; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1075_READ_VAUX); + break; + case PMBUS_VIRT_READ_IOUT_MIN: + if (!data->have_iout_min) + return -ENXIO; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1293_IOUT_MIN); + break; + case PMBUS_VIRT_READ_IOUT_MAX: + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1275_PEAK_IOUT); + break; + case PMBUS_VIRT_READ_VOUT_MAX: + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1275_PEAK_VOUT); + break; + case PMBUS_VIRT_READ_VIN_MAX: + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1275_PEAK_VIN); + break; + case PMBUS_VIRT_READ_PIN_MIN: + if (!data->have_pin_min) + return -ENXIO; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1293_PIN_MIN); + break; + case PMBUS_VIRT_READ_PIN_MAX: + if (!data->have_pin_max) + return -ENXIO; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1276_PEAK_PIN); + break; + case PMBUS_VIRT_READ_TEMP_MAX: + if (!data->have_temp_max) + return -ENXIO; + ret = pmbus_read_word_data(client, 0, 0xff, + ADM1278_PEAK_TEMP); + break; + case PMBUS_VIRT_RESET_IOUT_HISTORY: + case PMBUS_VIRT_RESET_VOUT_HISTORY: + case PMBUS_VIRT_RESET_VIN_HISTORY: + break; + case PMBUS_VIRT_RESET_PIN_HISTORY: + if (!data->have_pin_max) + return -ENXIO; + break; + case PMBUS_VIRT_RESET_TEMP_HISTORY: + if (!data->have_temp_max) + return -ENXIO; + break; + case PMBUS_VIRT_POWER_SAMPLES: + if (!data->have_power_sampling) + return -ENXIO; + ret = adm1275_read_pmon_config(data, client, true); + if (ret < 0) + break; + ret = BIT(ret); + break; + case PMBUS_VIRT_IN_SAMPLES: + case PMBUS_VIRT_CURR_SAMPLES: + ret = adm1275_read_pmon_config(data, client, false); + if (ret < 0) + break; + ret = BIT(ret); + break; + default: + ret = -ENODATA; + break; + } + return ret; +} + +static int adm1275_write_word_data(struct i2c_client *client, int page, int reg, + u16 word) +{ + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + const struct adm1275_data *data = to_adm1275_data(info); + int ret; + + if (page > 0) + return -ENXIO; + + switch (reg) { + case PMBUS_IOUT_UC_FAULT_LIMIT: + case PMBUS_IOUT_OC_FAULT_LIMIT: + ret = pmbus_write_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT, + word); + break; + case PMBUS_VIRT_RESET_IOUT_HISTORY: + ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_IOUT, 0); + if (!ret && data->have_iout_min) + ret = pmbus_write_word_data(client, 0, + ADM1293_IOUT_MIN, 0); + break; + case PMBUS_VIRT_RESET_VOUT_HISTORY: + ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VOUT, 0); + break; + case PMBUS_VIRT_RESET_VIN_HISTORY: + ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0); + break; + case PMBUS_VIRT_RESET_PIN_HISTORY: + ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0); + if (!ret && data->have_pin_min) + ret = pmbus_write_word_data(client, 0, + ADM1293_PIN_MIN, 0); + break; + case PMBUS_VIRT_RESET_TEMP_HISTORY: + ret = pmbus_write_word_data(client, 0, ADM1278_PEAK_TEMP, 0); + break; + case PMBUS_VIRT_POWER_SAMPLES: + if (!data->have_power_sampling) + return -ENXIO; + word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX); + ret = adm1275_write_pmon_config(data, client, true, + ilog2(word)); + break; + case PMBUS_VIRT_IN_SAMPLES: + case PMBUS_VIRT_CURR_SAMPLES: + word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX); + ret = adm1275_write_pmon_config(data, client, false, + ilog2(word)); + break; + default: + ret = -ENODATA; + break; + } + return ret; +} + +static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg) +{ + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + const struct adm1275_data *data = to_adm1275_data(info); + int mfr_status, ret; + + if (page > 0) + return -ENXIO; + + switch (reg) { + case PMBUS_STATUS_IOUT: + ret = pmbus_read_byte_data(client, page, PMBUS_STATUS_IOUT); + if (ret < 0) + break; + if (!data->have_oc_fault && !data->have_uc_fault) + break; + mfr_status = pmbus_read_byte_data(client, page, + PMBUS_STATUS_MFR_SPECIFIC); + if (mfr_status < 0) + return mfr_status; + if (mfr_status & ADM1275_MFR_STATUS_IOUT_WARN2) { + ret |= data->have_oc_fault ? + PB_IOUT_OC_FAULT : PB_IOUT_UC_FAULT; + } + break; + case PMBUS_STATUS_VOUT: + if (data->have_vout) + return -ENODATA; + ret = 0; + if (data->have_vaux_status) { + mfr_status = pmbus_read_byte_data(client, 0, + ADM1075_VAUX_STATUS); + if (mfr_status < 0) + return mfr_status; + if (mfr_status & ADM1075_VAUX_OV_WARN) + ret |= PB_VOLTAGE_OV_WARNING; + if (mfr_status & ADM1075_VAUX_UV_WARN) + ret |= PB_VOLTAGE_UV_WARNING; + } else if (data->have_mfr_vaux_status) { + mfr_status = pmbus_read_byte_data(client, page, + PMBUS_STATUS_MFR_SPECIFIC); + if (mfr_status < 0) + return mfr_status; + if (mfr_status & ADM1293_MFR_STATUS_VAUX_OV_WARN) + ret |= PB_VOLTAGE_OV_WARNING; + if (mfr_status & ADM1293_MFR_STATUS_VAUX_UV_WARN) + ret |= PB_VOLTAGE_UV_WARNING; + } + break; + default: + ret = -ENODATA; + break; + } + return ret; +} + +static const struct i2c_device_id adm1275_id[] = { + { "adm1075", adm1075 }, + { "adm1272", adm1272 }, + { "adm1275", adm1275 }, + { "adm1276", adm1276 }, + { "adm1278", adm1278 }, + { "adm1293", adm1293 }, + { "adm1294", adm1294 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adm1275_id); + +static int adm1275_probe(struct i2c_client *client) +{ + s32 (*config_read_fn)(const struct i2c_client *client, u8 reg); + u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1]; + int config, device_config; + int ret; + struct pmbus_driver_info *info; + struct adm1275_data *data; + const struct i2c_device_id *mid; + const struct coefficients *coefficients; + int vindex = -1, voindex = -1, cindex = -1, pindex = -1; + int tindex = -1; + u32 shunt; + u32 avg; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_BYTE_DATA + | I2C_FUNC_SMBUS_BLOCK_DATA)) + return -ENODEV; + + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer); + if (ret < 0) { + dev_err(&client->dev, "Failed to read Manufacturer ID\n"); + return ret; + } + if (ret != 3 || strncmp(block_buffer, "ADI", 3)) { + dev_err(&client->dev, "Unsupported Manufacturer ID\n"); + return -ENODEV; + } + + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer); + if (ret < 0) { + dev_err(&client->dev, "Failed to read Manufacturer Model\n"); + return ret; + } + for (mid = adm1275_id; mid->name[0]; mid++) { + if (!strncasecmp(mid->name, block_buffer, strlen(mid->name))) + break; + } + if (!mid->name[0]) { + dev_err(&client->dev, "Unsupported device\n"); + return -ENODEV; + } + + if (strcmp(client->name, mid->name) != 0) + dev_notice(&client->dev, + "Device mismatch: Configured %s, detected %s\n", + client->name, mid->name); + + if (mid->driver_data == adm1272 || mid->driver_data == adm1278 || + mid->driver_data == adm1293 || mid->driver_data == adm1294) + config_read_fn = i2c_smbus_read_word_data; + else + config_read_fn = i2c_smbus_read_byte_data; + config = config_read_fn(client, ADM1275_PMON_CONFIG); + if (config < 0) + return config; + + device_config = config_read_fn(client, ADM1275_DEVICE_CONFIG); + if (device_config < 0) + return device_config; + + data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data), + GFP_KERNEL); + if (!data) + return -ENOMEM; + + if (of_property_read_u32(client->dev.of_node, + "shunt-resistor-micro-ohms", &shunt)) + shunt = 1000; /* 1 mOhm if not set via DT */ + + if (shunt == 0) + return -EINVAL; + + data->id = mid->driver_data; + + info = &data->info; + + info->pages = 1; + info->format[PSC_VOLTAGE_IN] = direct; + info->format[PSC_VOLTAGE_OUT] = direct; + info->format[PSC_CURRENT_OUT] = direct; + info->format[PSC_POWER] = direct; + info->format[PSC_TEMPERATURE] = direct; + info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_SAMPLES; + + info->read_word_data = adm1275_read_word_data; + info->read_byte_data = adm1275_read_byte_data; + info->write_word_data = adm1275_write_word_data; + + switch (data->id) { + case adm1075: + if (device_config & ADM1275_IOUT_WARN2_SELECT) + data->have_oc_fault = true; + else + data->have_uc_fault = true; + data->have_pin_max = true; + data->have_vaux_status = true; + + coefficients = adm1075_coefficients; + vindex = 0; + switch (config & ADM1075_IRANGE_MASK) { + case ADM1075_IRANGE_25: + cindex = 1; + pindex = 3; + break; + case ADM1075_IRANGE_50: + cindex = 2; + pindex = 4; + break; + default: + dev_err(&client->dev, "Invalid input current range"); + break; + } + + info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN + | PMBUS_HAVE_STATUS_INPUT; + if (config & ADM1275_VIN_VOUT_SELECT) + info->func[0] |= + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; + break; + case adm1272: + data->have_vout = true; + data->have_pin_max = true; + data->have_temp_max = true; + data->have_power_sampling = true; + + coefficients = adm1272_coefficients; + vindex = (config & ADM1275_VRANGE) ? 1 : 0; + cindex = (config & ADM1272_IRANGE) ? 3 : 2; + /* pindex depends on the combination of the above */ + switch (config & (ADM1275_VRANGE | ADM1272_IRANGE)) { + case 0: + default: + pindex = 4; + break; + case ADM1275_VRANGE: + pindex = 5; + break; + case ADM1272_IRANGE: + pindex = 6; + break; + case ADM1275_VRANGE | ADM1272_IRANGE: + pindex = 7; + break; + } + tindex = 8; + + info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; + + /* Enable VOUT & TEMP1 if not enabled (disabled by default) */ + if ((config & (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) != + (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) { + config |= ADM1278_VOUT_EN | ADM1278_TEMP1_EN; + ret = i2c_smbus_write_byte_data(client, + ADM1275_PMON_CONFIG, + config); + if (ret < 0) { + dev_err(&client->dev, + "Failed to enable VOUT monitoring\n"); + return -ENODEV; + } + } + if (config & ADM1278_VIN_EN) + info->func[0] |= PMBUS_HAVE_VIN; + break; + case adm1275: + if (device_config & ADM1275_IOUT_WARN2_SELECT) + data->have_oc_fault = true; + else + data->have_uc_fault = true; + data->have_vout = true; + + coefficients = adm1275_coefficients; + vindex = (config & ADM1275_VRANGE) ? 0 : 1; + cindex = 2; + + if (config & ADM1275_VIN_VOUT_SELECT) + info->func[0] |= + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; + else + info->func[0] |= + PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; + break; + case adm1276: + if (device_config & ADM1275_IOUT_WARN2_SELECT) + data->have_oc_fault = true; + else + data->have_uc_fault = true; + data->have_vout = true; + data->have_pin_max = true; + + coefficients = adm1276_coefficients; + vindex = (config & ADM1275_VRANGE) ? 0 : 1; + cindex = 2; + pindex = (config & ADM1275_VRANGE) ? 3 : 4; + + info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN + | PMBUS_HAVE_STATUS_INPUT; + if (config & ADM1275_VIN_VOUT_SELECT) + info->func[0] |= + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; + break; + case adm1278: + data->have_vout = true; + data->have_pin_max = true; + data->have_temp_max = true; + data->have_power_sampling = true; + + coefficients = adm1278_coefficients; + vindex = 0; + cindex = 1; + pindex = 2; + tindex = 3; + + info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT | + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; + + /* Enable VOUT & TEMP1 if not enabled (disabled by default) */ + if ((config & (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) != + (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) { + config |= ADM1278_VOUT_EN | ADM1278_TEMP1_EN; + ret = i2c_smbus_write_word_data(client, + ADM1275_PMON_CONFIG, + config); + if (ret < 0) { + dev_err(&client->dev, + "Failed to enable VOUT monitoring\n"); + return -ENODEV; + } + } + + if (config & ADM1278_VIN_EN) + info->func[0] |= PMBUS_HAVE_VIN; + break; + case adm1293: + case adm1294: + data->have_iout_min = true; + data->have_pin_min = true; + data->have_pin_max = true; + data->have_mfr_vaux_status = true; + data->have_power_sampling = true; + + coefficients = adm1293_coefficients; + + voindex = 0; + switch (config & ADM1293_VIN_SEL_MASK) { + case ADM1293_VIN_SEL_012: /* 1.2V */ + vindex = 0; + break; + case ADM1293_VIN_SEL_074: /* 7.4V */ + vindex = 1; + break; + case ADM1293_VIN_SEL_210: /* 21V */ + vindex = 2; + break; + default: /* disabled */ + break; + } + + switch (config & ADM1293_IRANGE_MASK) { + case ADM1293_IRANGE_25: + cindex = 3; + break; + case ADM1293_IRANGE_50: + cindex = 4; + break; + case ADM1293_IRANGE_100: + cindex = 5; + break; + case ADM1293_IRANGE_200: + cindex = 6; + break; + } + + if (vindex >= 0) + pindex = 7 + vindex * 4 + (cindex - 3); + + if (config & ADM1293_VAUX_EN) + info->func[0] |= + PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; + + info->func[0] |= PMBUS_HAVE_PIN | + PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT; + + break; + default: + dev_err(&client->dev, "Unsupported device\n"); + return -ENODEV; + } + + if (data->have_power_sampling && + of_property_read_u32(client->dev.of_node, + "adi,power-sample-average", &avg) == 0) { + if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || + BIT(__fls(avg)) != avg) { + dev_err(&client->dev, + "Invalid number of power samples"); + return -EINVAL; + } + ret = adm1275_write_pmon_config(data, client, true, + ilog2(avg)); + if (ret < 0) { + dev_err(&client->dev, + "Setting power sample averaging failed with error %d", + ret); + return ret; + } + } + + if (of_property_read_u32(client->dev.of_node, + "adi,volt-curr-sample-average", &avg) == 0) { + if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || + BIT(__fls(avg)) != avg) { + dev_err(&client->dev, + "Invalid number of voltage/current samples"); + return -EINVAL; + } + ret = adm1275_write_pmon_config(data, client, false, + ilog2(avg)); + if (ret < 0) { + dev_err(&client->dev, + "Setting voltage and current sample averaging failed with error %d", + ret); + return ret; + } + } + + if (voindex < 0) + voindex = vindex; + if (vindex >= 0) { + info->m[PSC_VOLTAGE_IN] = coefficients[vindex].m; + info->b[PSC_VOLTAGE_IN] = coefficients[vindex].b; + info->R[PSC_VOLTAGE_IN] = coefficients[vindex].R; + } + if (voindex >= 0) { + info->m[PSC_VOLTAGE_OUT] = coefficients[voindex].m; + info->b[PSC_VOLTAGE_OUT] = coefficients[voindex].b; + info->R[PSC_VOLTAGE_OUT] = coefficients[voindex].R; + } + if (cindex >= 0) { + /* Scale current with sense resistor value */ + info->m[PSC_CURRENT_OUT] = + coefficients[cindex].m * shunt / 1000; + info->b[PSC_CURRENT_OUT] = coefficients[cindex].b; + info->R[PSC_CURRENT_OUT] = coefficients[cindex].R; + } + if (pindex >= 0) { + info->m[PSC_POWER] = + coefficients[pindex].m * shunt / 1000; + info->b[PSC_POWER] = coefficients[pindex].b; + info->R[PSC_POWER] = coefficients[pindex].R; + } + if (tindex >= 0) { + info->m[PSC_TEMPERATURE] = coefficients[tindex].m; + info->b[PSC_TEMPERATURE] = coefficients[tindex].b; + info->R[PSC_TEMPERATURE] = coefficients[tindex].R; + } + + return pmbus_do_probe(client, info); +} + +static struct i2c_driver adm1275_driver = { + .driver = { + .name = "adm1275", + }, + .probe_new = adm1275_probe, + .id_table = adm1275_id, +}; + +module_i2c_driver(adm1275_driver); + +MODULE_AUTHOR("Guenter Roeck"); +MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(PMBUS); 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