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/power/supply/mp2629_charger.c | 667 ++++++++++++++++++++++++++++++++++ 1 file changed, 667 insertions(+) create mode 100644 drivers/power/supply/mp2629_charger.c (limited to 'drivers/power/supply/mp2629_charger.c') diff --git a/drivers/power/supply/mp2629_charger.c b/drivers/power/supply/mp2629_charger.c new file mode 100644 index 000000000..bf9c27b46 --- /dev/null +++ b/drivers/power/supply/mp2629_charger.c @@ -0,0 +1,667 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MP2629 battery charger driver + * + * Copyright 2020 Monolithic Power Systems, Inc + * + * Author: Saravanan Sekar + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MP2629_REG_INPUT_ILIM 0x00 +#define MP2629_REG_INPUT_VLIM 0x01 +#define MP2629_REG_CHARGE_CTRL 0x04 +#define MP2629_REG_CHARGE_ILIM 0x05 +#define MP2629_REG_PRECHARGE 0x06 +#define MP2629_REG_TERM_CURRENT 0x06 +#define MP2629_REG_CHARGE_VLIM 0x07 +#define MP2629_REG_TIMER_CTRL 0x08 +#define MP2629_REG_IMPEDANCE_COMP 0x09 +#define MP2629_REG_INTERRUPT 0x0b +#define MP2629_REG_STATUS 0x0c +#define MP2629_REG_FAULT 0x0d + +#define MP2629_MASK_INPUT_TYPE GENMASK(7, 5) +#define MP2629_MASK_CHARGE_TYPE GENMASK(4, 3) +#define MP2629_MASK_CHARGE_CTRL GENMASK(5, 4) +#define MP2629_MASK_WDOG_CTRL GENMASK(5, 4) +#define MP2629_MASK_IMPEDANCE GENMASK(7, 4) + +#define MP2629_INPUTSOURCE_CHANGE GENMASK(7, 5) +#define MP2629_CHARGING_CHANGE GENMASK(4, 3) +#define MP2629_FAULT_BATTERY BIT(3) +#define MP2629_FAULT_THERMAL BIT(4) +#define MP2629_FAULT_INPUT BIT(5) +#define MP2629_FAULT_OTG BIT(6) + +#define MP2629_MAX_BATT_CAPACITY 100 + +#define MP2629_PROPS(_idx, _min, _max, _step) \ + [_idx] = { \ + .min = _min, \ + .max = _max, \ + .step = _step, \ +} + +enum mp2629_source_type { + MP2629_SOURCE_TYPE_NO_INPUT, + MP2629_SOURCE_TYPE_NON_STD, + MP2629_SOURCE_TYPE_SDP, + MP2629_SOURCE_TYPE_CDP, + MP2629_SOURCE_TYPE_DCP, + MP2629_SOURCE_TYPE_OTG = 7, +}; + +enum mp2629_field { + INPUT_ILIM, + INPUT_VLIM, + CHARGE_ILIM, + CHARGE_VLIM, + PRECHARGE, + TERM_CURRENT, + MP2629_MAX_FIELD +}; + +struct mp2629_charger { + struct device *dev; + int status; + int fault; + + struct regmap *regmap; + struct regmap_field *regmap_fields[MP2629_MAX_FIELD]; + struct mutex lock; + struct power_supply *usb; + struct power_supply *battery; + struct iio_channel *iiochan[MP2629_ADC_CHAN_END]; +}; + +struct mp2629_prop { + int reg; + int mask; + int min; + int max; + int step; + int shift; +}; + +static enum power_supply_usb_type mp2629_usb_types[] = { + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_DCP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_PD_DRP, + POWER_SUPPLY_USB_TYPE_UNKNOWN +}; + +static enum power_supply_property mp2629_charger_usb_props[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT, +}; + +static enum power_supply_property mp2629_charger_bat_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, +}; + +static struct mp2629_prop props[] = { + MP2629_PROPS(INPUT_ILIM, 100000, 3250000, 50000), + MP2629_PROPS(INPUT_VLIM, 3800000, 5300000, 100000), + MP2629_PROPS(CHARGE_ILIM, 320000, 4520000, 40000), + MP2629_PROPS(CHARGE_VLIM, 3400000, 4670000, 10000), + MP2629_PROPS(PRECHARGE, 120000, 720000, 40000), + MP2629_PROPS(TERM_CURRENT, 80000, 680000, 40000), +}; + +static const struct reg_field mp2629_reg_fields[] = { + [INPUT_ILIM] = REG_FIELD(MP2629_REG_INPUT_ILIM, 0, 5), + [INPUT_VLIM] = REG_FIELD(MP2629_REG_INPUT_VLIM, 0, 3), + [CHARGE_ILIM] = REG_FIELD(MP2629_REG_CHARGE_ILIM, 0, 6), + [CHARGE_VLIM] = REG_FIELD(MP2629_REG_CHARGE_VLIM, 1, 7), + [PRECHARGE] = REG_FIELD(MP2629_REG_PRECHARGE, 4, 7), + [TERM_CURRENT] = REG_FIELD(MP2629_REG_TERM_CURRENT, 0, 3), +}; + +static char *adc_chan_name[] = { + "mp2629-batt-volt", + "mp2629-system-volt", + "mp2629-input-volt", + "mp2629-batt-current", + "mp2629-input-current", +}; + +static int mp2629_read_adc(struct mp2629_charger *charger, + enum mp2629_adc_chan ch, + union power_supply_propval *val) +{ + int ret; + int chval; + + ret = iio_read_channel_processed(charger->iiochan[ch], &chval); + if (ret) + return ret; + + val->intval = chval * 1000; + + return 0; +} + +static int mp2629_get_prop(struct mp2629_charger *charger, + enum mp2629_field fld, + union power_supply_propval *val) +{ + int ret; + unsigned int rval; + + ret = regmap_field_read(charger->regmap_fields[fld], &rval); + if (ret) + return ret; + + val->intval = rval * props[fld].step + props[fld].min; + + return 0; +} + +static int mp2629_set_prop(struct mp2629_charger *charger, + enum mp2629_field fld, + const union power_supply_propval *val) +{ + unsigned int rval; + + if (val->intval < props[fld].min || val->intval > props[fld].max) + return -EINVAL; + + rval = (val->intval - props[fld].min) / props[fld].step; + return regmap_field_write(charger->regmap_fields[fld], rval); +} + +static int mp2629_get_battery_capacity(struct mp2629_charger *charger, + union power_supply_propval *val) +{ + union power_supply_propval vnow, vlim; + int ret; + + ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, &vnow); + if (ret) + return ret; + + ret = mp2629_get_prop(charger, CHARGE_VLIM, &vlim); + if (ret) + return ret; + + val->intval = (vnow.intval * 100) / vlim.intval; + val->intval = min(val->intval, MP2629_MAX_BATT_CAPACITY); + + return 0; +} + +static int mp2629_charger_battery_get_prop(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + unsigned int rval; + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, val); + break; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + ret = mp2629_read_adc(charger, MP2629_BATT_CURRENT, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + val->intval = 4520000; + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = 4670000; + break; + + case POWER_SUPPLY_PROP_CAPACITY: + ret = mp2629_get_battery_capacity(charger, val); + break; + + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = mp2629_get_prop(charger, TERM_CURRENT, val); + break; + + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = mp2629_get_prop(charger, PRECHARGE, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = mp2629_get_prop(charger, CHARGE_VLIM, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = mp2629_get_prop(charger, CHARGE_ILIM, val); + break; + + case POWER_SUPPLY_PROP_HEALTH: + if (!charger->fault) + val->intval = POWER_SUPPLY_HEALTH_GOOD; + if (MP2629_FAULT_BATTERY & charger->fault) + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + else if (MP2629_FAULT_THERMAL & charger->fault) + val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; + else if (MP2629_FAULT_INPUT & charger->fault) + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + break; + + case POWER_SUPPLY_PROP_STATUS: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + break; + + rval = (rval & MP2629_MASK_CHARGE_TYPE) >> 3; + switch (rval) { + case 0x00: + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + break; + case 0x01: + case 0x10: + val->intval = POWER_SUPPLY_STATUS_CHARGING; + break; + case 0x11: + val->intval = POWER_SUPPLY_STATUS_FULL; + } + break; + + case POWER_SUPPLY_PROP_CHARGE_TYPE: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + break; + + rval = (rval & MP2629_MASK_CHARGE_TYPE) >> 3; + switch (rval) { + case 0x00: + val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; + break; + case 0x01: + val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + case 0x10: + val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD; + break; + default: + val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; + } + break; + + default: + return -EINVAL; + } + + return ret; +} + +static int mp2629_charger_battery_set_prop(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return mp2629_set_prop(charger, TERM_CURRENT, val); + + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + return mp2629_set_prop(charger, PRECHARGE, val); + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + return mp2629_set_prop(charger, CHARGE_VLIM, val); + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + return mp2629_set_prop(charger, CHARGE_ILIM, val); + + default: + return -EINVAL; + } +} + +static int mp2629_charger_usb_get_prop(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + unsigned int rval; + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + break; + + val->intval = !!(rval & MP2629_MASK_INPUT_TYPE); + break; + + case POWER_SUPPLY_PROP_USB_TYPE: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + break; + + rval = (rval & MP2629_MASK_INPUT_TYPE) >> 5; + switch (rval) { + case MP2629_SOURCE_TYPE_SDP: + val->intval = POWER_SUPPLY_USB_TYPE_SDP; + break; + case MP2629_SOURCE_TYPE_CDP: + val->intval = POWER_SUPPLY_USB_TYPE_CDP; + break; + case MP2629_SOURCE_TYPE_DCP: + val->intval = POWER_SUPPLY_USB_TYPE_DCP; + break; + case MP2629_SOURCE_TYPE_OTG: + val->intval = POWER_SUPPLY_USB_TYPE_PD_DRP; + break; + default: + val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + } + break; + + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = mp2629_read_adc(charger, MP2629_INPUT_VOLT, val); + break; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + ret = mp2629_read_adc(charger, MP2629_INPUT_CURRENT, val); + break; + + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + ret = mp2629_get_prop(charger, INPUT_VLIM, val); + break; + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = mp2629_get_prop(charger, INPUT_ILIM, val); + break; + + default: + return -EINVAL; + } + + return ret; +} + +static int mp2629_charger_usb_set_prop(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + return mp2629_set_prop(charger, INPUT_VLIM, val); + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return mp2629_set_prop(charger, INPUT_ILIM, val); + + default: + return -EINVAL; + } +} + +static int mp2629_charger_battery_prop_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return (psp == POWER_SUPPLY_PROP_PRECHARGE_CURRENT) || + (psp == POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT) || + (psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT) || + (psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE); +} + +static int mp2629_charger_usb_prop_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return (psp == POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT) || + (psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT); +} + +static irqreturn_t mp2629_irq_handler(int irq, void *dev_id) +{ + struct mp2629_charger *charger = dev_id; + unsigned int rval; + int ret; + + mutex_lock(&charger->lock); + + ret = regmap_read(charger->regmap, MP2629_REG_FAULT, &rval); + if (ret) + goto unlock; + + if (rval) { + charger->fault = rval; + if (MP2629_FAULT_BATTERY & rval) + dev_err(charger->dev, "Battery fault OVP\n"); + else if (MP2629_FAULT_THERMAL & rval) + dev_err(charger->dev, "Thermal shutdown fault\n"); + else if (MP2629_FAULT_INPUT & rval) + dev_err(charger->dev, "no input or input OVP\n"); + else if (MP2629_FAULT_OTG & rval) + dev_err(charger->dev, "VIN overloaded\n"); + + goto unlock; + } + + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + goto unlock; + + if (rval & MP2629_INPUTSOURCE_CHANGE) + power_supply_changed(charger->usb); + else if (rval & MP2629_CHARGING_CHANGE) + power_supply_changed(charger->battery); + +unlock: + mutex_unlock(&charger->lock); + + return IRQ_HANDLED; +} + +static const struct power_supply_desc mp2629_usb_desc = { + .name = "mp2629_usb", + .type = POWER_SUPPLY_TYPE_USB, + .usb_types = mp2629_usb_types, + .num_usb_types = ARRAY_SIZE(mp2629_usb_types), + .properties = mp2629_charger_usb_props, + .num_properties = ARRAY_SIZE(mp2629_charger_usb_props), + .get_property = mp2629_charger_usb_get_prop, + .set_property = mp2629_charger_usb_set_prop, + .property_is_writeable = mp2629_charger_usb_prop_writeable, +}; + +static const struct power_supply_desc mp2629_battery_desc = { + .name = "mp2629_battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = mp2629_charger_bat_props, + .num_properties = ARRAY_SIZE(mp2629_charger_bat_props), + .get_property = mp2629_charger_battery_get_prop, + .set_property = mp2629_charger_battery_set_prop, + .property_is_writeable = mp2629_charger_battery_prop_writeable, +}; + +static ssize_t batt_impedance_compensation_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct mp2629_charger *charger = dev_get_drvdata(dev->parent); + unsigned int rval; + int ret; + + ret = regmap_read(charger->regmap, MP2629_REG_IMPEDANCE_COMP, &rval); + if (ret) + return ret; + + rval = (rval >> 4) * 10; + return sprintf(buf, "%d mohm\n", rval); +} + +static ssize_t batt_impedance_compensation_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct mp2629_charger *charger = dev_get_drvdata(dev->parent); + unsigned int val; + int ret; + + ret = kstrtouint(buf, 10, &val); + if (ret) + return ret; + + if (val > 140) + return -ERANGE; + + /* multiples of 10 mohm so round off */ + val = val / 10; + ret = regmap_update_bits(charger->regmap, MP2629_REG_IMPEDANCE_COMP, + MP2629_MASK_IMPEDANCE, val << 4); + if (ret) + return ret; + + return count; +} + +static DEVICE_ATTR_RW(batt_impedance_compensation); + +static struct attribute *mp2629_charger_sysfs_attrs[] = { + &dev_attr_batt_impedance_compensation.attr, + NULL +}; +ATTRIBUTE_GROUPS(mp2629_charger_sysfs); + +static void mp2629_charger_disable(void *data) +{ + struct mp2629_charger *charger = data; + + regmap_update_bits(charger->regmap, MP2629_REG_CHARGE_CTRL, + MP2629_MASK_CHARGE_CTRL, 0); +} + +static int mp2629_charger_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mp2629_data *ddata = dev_get_drvdata(dev->parent); + struct mp2629_charger *charger; + struct power_supply_config psy_cfg = {}; + int ret, i, irq; + + charger = devm_kzalloc(dev, sizeof(*charger), GFP_KERNEL); + if (!charger) + return -ENOMEM; + + charger->regmap = ddata->regmap; + charger->dev = dev; + platform_set_drvdata(pdev, charger); + + irq = platform_get_irq(to_platform_device(dev->parent), 0); + if (irq < 0) + return irq; + + for (i = 0; i < MP2629_MAX_FIELD; i++) { + charger->regmap_fields[i] = devm_regmap_field_alloc(dev, + charger->regmap, mp2629_reg_fields[i]); + if (IS_ERR(charger->regmap_fields[i])) { + dev_err(dev, "regmap field alloc fail %d\n", i); + return PTR_ERR(charger->regmap_fields[i]); + } + } + + for (i = 0; i < MP2629_ADC_CHAN_END; i++) { + charger->iiochan[i] = devm_iio_channel_get(dev, + adc_chan_name[i]); + if (IS_ERR(charger->iiochan[i])) { + dev_err(dev, "iio chan get %s err\n", adc_chan_name[i]); + return PTR_ERR(charger->iiochan[i]); + } + } + + ret = devm_add_action_or_reset(dev, mp2629_charger_disable, charger); + if (ret) + return ret; + + charger->usb = devm_power_supply_register(dev, &mp2629_usb_desc, NULL); + if (IS_ERR(charger->usb)) { + dev_err(dev, "power supply register usb failed\n"); + return PTR_ERR(charger->usb); + } + + psy_cfg.drv_data = charger; + psy_cfg.attr_grp = mp2629_charger_sysfs_groups; + charger->battery = devm_power_supply_register(dev, + &mp2629_battery_desc, &psy_cfg); + if (IS_ERR(charger->battery)) { + dev_err(dev, "power supply register battery failed\n"); + return PTR_ERR(charger->battery); + } + + ret = regmap_update_bits(charger->regmap, MP2629_REG_CHARGE_CTRL, + MP2629_MASK_CHARGE_CTRL, BIT(4)); + if (ret) { + dev_err(dev, "enable charge fail: %d\n", ret); + return ret; + } + + regmap_update_bits(charger->regmap, MP2629_REG_TIMER_CTRL, + MP2629_MASK_WDOG_CTRL, 0); + + mutex_init(&charger->lock); + + ret = devm_request_threaded_irq(dev, irq, NULL, mp2629_irq_handler, + IRQF_ONESHOT | IRQF_TRIGGER_RISING, + "mp2629-charger", charger); + if (ret) { + dev_err(dev, "failed to request gpio IRQ\n"); + return ret; + } + + regmap_update_bits(charger->regmap, MP2629_REG_INTERRUPT, + GENMASK(6, 5), BIT(6) | BIT(5)); + + return 0; +} + +static const struct of_device_id mp2629_charger_of_match[] = { + { .compatible = "mps,mp2629_charger"}, + {} +}; +MODULE_DEVICE_TABLE(of, mp2629_charger_of_match); + +static struct platform_driver mp2629_charger_driver = { + .driver = { + .name = "mp2629_charger", + .of_match_table = mp2629_charger_of_match, + }, + .probe = mp2629_charger_probe, +}; +module_platform_driver(mp2629_charger_driver); + +MODULE_AUTHOR("Saravanan Sekar "); +MODULE_DESCRIPTION("MP2629 Charger driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3