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/rn5t618_power.c | 829 +++++++++++++++++++++++++++++++++++ 1 file changed, 829 insertions(+) create mode 100644 drivers/power/supply/rn5t618_power.c (limited to 'drivers/power/supply/rn5t618_power.c') diff --git a/drivers/power/supply/rn5t618_power.c b/drivers/power/supply/rn5t618_power.c new file mode 100644 index 000000000..a5e09ac78 --- /dev/null +++ b/drivers/power/supply/rn5t618_power.c @@ -0,0 +1,829 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Power supply driver for the RICOH RN5T618 power management chip family + * + * Copyright (C) 2020 Andreas Kemnade + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define CHG_STATE_ADP_INPUT 0x40 +#define CHG_STATE_USB_INPUT 0x80 +#define CHG_STATE_MASK 0x1f +#define CHG_STATE_CHG_OFF 0 +#define CHG_STATE_CHG_READY_VADP 1 +#define CHG_STATE_CHG_TRICKLE 2 +#define CHG_STATE_CHG_RAPID 3 +#define CHG_STATE_CHG_COMPLETE 4 +#define CHG_STATE_SUSPEND 5 +#define CHG_STATE_VCHG_OVER_VOL 6 +#define CHG_STATE_BAT_ERROR 7 +#define CHG_STATE_NO_BAT 8 +#define CHG_STATE_BAT_OVER_VOL 9 +#define CHG_STATE_BAT_TEMP_ERR 10 +#define CHG_STATE_DIE_ERR 11 +#define CHG_STATE_DIE_SHUTDOWN 12 +#define CHG_STATE_NO_BAT2 13 +#define CHG_STATE_CHG_READY_VUSB 14 + +#define GCHGDET_TYPE_MASK 0x30 +#define GCHGDET_TYPE_SDP 0x00 +#define GCHGDET_TYPE_CDP 0x10 +#define GCHGDET_TYPE_DCP 0x20 + +#define FG_ENABLE 1 + +/* + * Formula seems accurate for battery current, but for USB current around 70mA + * per step was seen on Kobo Clara HD but all sources show the same formula + * also fur USB current. To avoid accidentially unwanted high currents we stick + * to that formula + */ +#define TO_CUR_REG(x) ((x) / 100000 - 1) +#define FROM_CUR_REG(x) ((((x) & 0x1f) + 1) * 100000) +#define CHG_MIN_CUR 100000 +#define CHG_MAX_CUR 1800000 +#define ADP_MAX_CUR 2500000 +#define USB_MAX_CUR 1400000 + + +struct rn5t618_power_info { + struct rn5t618 *rn5t618; + struct platform_device *pdev; + struct power_supply *battery; + struct power_supply *usb; + struct power_supply *adp; + struct iio_channel *channel_vusb; + struct iio_channel *channel_vadp; + int irq; +}; + +static enum power_supply_usb_type rn5t618_usb_types[] = { + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_DCP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_UNKNOWN +}; + +static enum power_supply_property rn5t618_usb_props[] = { + /* input current limit is not very accurate */ + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_ONLINE, +}; + +static enum power_supply_property rn5t618_adp_props[] = { + /* input current limit is not very accurate */ + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_ONLINE, +}; + + +static enum power_supply_property rn5t618_battery_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, + POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, + POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_NOW, +}; + +static int rn5t618_battery_read_doublereg(struct rn5t618_power_info *info, + u8 reg, u16 *result) +{ + int ret, i; + u8 data[2]; + u16 old, new; + + old = 0; + /* Prevent races when registers are changing. */ + for (i = 0; i < 3; i++) { + ret = regmap_bulk_read(info->rn5t618->regmap, + reg, data, sizeof(data)); + if (ret) + return ret; + + new = data[0] << 8; + new |= data[1]; + if (new == old) + break; + + old = new; + } + + *result = new; + + return 0; +} + +static int rn5t618_decode_status(unsigned int status) +{ + switch (status & CHG_STATE_MASK) { + case CHG_STATE_CHG_OFF: + case CHG_STATE_SUSPEND: + case CHG_STATE_VCHG_OVER_VOL: + case CHG_STATE_DIE_SHUTDOWN: + return POWER_SUPPLY_STATUS_DISCHARGING; + + case CHG_STATE_CHG_TRICKLE: + case CHG_STATE_CHG_RAPID: + return POWER_SUPPLY_STATUS_CHARGING; + + case CHG_STATE_CHG_COMPLETE: + return POWER_SUPPLY_STATUS_FULL; + + default: + return POWER_SUPPLY_STATUS_NOT_CHARGING; + } +} + +static int rn5t618_battery_status(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + unsigned int v; + int ret; + + ret = regmap_read(info->rn5t618->regmap, RN5T618_CHGSTATE, &v); + if (ret) + return ret; + + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + + if (v & 0xc0) { /* USB or ADP plugged */ + val->intval = rn5t618_decode_status(v); + } else + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + + return ret; +} + +static int rn5t618_battery_present(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + unsigned int v; + int ret; + + ret = regmap_read(info->rn5t618->regmap, RN5T618_CHGSTATE, &v); + if (ret) + return ret; + + v &= CHG_STATE_MASK; + if ((v == CHG_STATE_NO_BAT) || (v == CHG_STATE_NO_BAT2)) + val->intval = 0; + else + val->intval = 1; + + return ret; +} + +static int rn5t618_battery_voltage_now(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + u16 res; + int ret; + + ret = rn5t618_battery_read_doublereg(info, RN5T618_VOLTAGE_1, &res); + if (ret) + return ret; + + val->intval = res * 2 * 2500 / 4095 * 1000; + + return 0; +} + +static int rn5t618_battery_current_now(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + u16 res; + int ret; + + ret = rn5t618_battery_read_doublereg(info, RN5T618_CC_AVEREG1, &res); + if (ret) + return ret; + + /* current is negative when discharging */ + val->intval = sign_extend32(res, 13) * 1000; + + return 0; +} + +static int rn5t618_battery_capacity(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + unsigned int v; + int ret; + + ret = regmap_read(info->rn5t618->regmap, RN5T618_SOC, &v); + if (ret) + return ret; + + val->intval = v; + + return 0; +} + +static int rn5t618_battery_temp(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + u16 res; + int ret; + + ret = rn5t618_battery_read_doublereg(info, RN5T618_TEMP_1, &res); + if (ret) + return ret; + + val->intval = sign_extend32(res, 11) * 10 / 16; + + return 0; +} + +static int rn5t618_battery_tte(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + u16 res; + int ret; + + ret = rn5t618_battery_read_doublereg(info, RN5T618_TT_EMPTY_H, &res); + if (ret) + return ret; + + if (res == 65535) + return -ENODATA; + + val->intval = res * 60; + + return 0; +} + +static int rn5t618_battery_ttf(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + u16 res; + int ret; + + ret = rn5t618_battery_read_doublereg(info, RN5T618_TT_FULL_H, &res); + if (ret) + return ret; + + if (res == 65535) + return -ENODATA; + + val->intval = res * 60; + + return 0; +} + +static int rn5t618_battery_set_current_limit(struct rn5t618_power_info *info, + const union power_supply_propval *val) +{ + if (val->intval < CHG_MIN_CUR) + return -EINVAL; + + if (val->intval >= CHG_MAX_CUR) + return -EINVAL; + + return regmap_update_bits(info->rn5t618->regmap, + RN5T618_CHGISET, + 0x1F, TO_CUR_REG(val->intval)); +} + +static int rn5t618_battery_get_current_limit(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->rn5t618->regmap, RN5T618_CHGISET, + ®val); + if (ret < 0) + return ret; + + val->intval = FROM_CUR_REG(regval); + + return 0; +} + +static int rn5t618_battery_charge_full(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + u16 res; + int ret; + + ret = rn5t618_battery_read_doublereg(info, RN5T618_FA_CAP_H, &res); + if (ret) + return ret; + + val->intval = res * 1000; + + return 0; +} + +static int rn5t618_battery_charge_now(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + u16 res; + int ret; + + ret = rn5t618_battery_read_doublereg(info, RN5T618_RE_CAP_H, &res); + if (ret) + return ret; + + val->intval = res * 1000; + + return 0; +} + +static int rn5t618_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + int ret = 0; + struct rn5t618_power_info *info = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + ret = rn5t618_battery_status(info, val); + break; + case POWER_SUPPLY_PROP_PRESENT: + ret = rn5t618_battery_present(info, val); + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = rn5t618_battery_voltage_now(info, val); + break; + case POWER_SUPPLY_PROP_CURRENT_NOW: + ret = rn5t618_battery_current_now(info, val); + break; + case POWER_SUPPLY_PROP_CAPACITY: + ret = rn5t618_battery_capacity(info, val); + break; + case POWER_SUPPLY_PROP_TEMP: + ret = rn5t618_battery_temp(info, val); + break; + case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: + ret = rn5t618_battery_tte(info, val); + break; + case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW: + ret = rn5t618_battery_ttf(info, val); + break; + case POWER_SUPPLY_PROP_TECHNOLOGY: + val->intval = POWER_SUPPLY_TECHNOLOGY_LION; + break; + case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: + ret = rn5t618_battery_get_current_limit(info, val); + break; + case POWER_SUPPLY_PROP_CHARGE_FULL: + ret = rn5t618_battery_charge_full(info, val); + break; + case POWER_SUPPLY_PROP_CHARGE_NOW: + ret = rn5t618_battery_charge_now(info, val); + break; + default: + return -EINVAL; + } + + return ret; +} + +static int rn5t618_battery_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct rn5t618_power_info *info = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: + return rn5t618_battery_set_current_limit(info, val); + default: + return -EINVAL; + } +} + +static int rn5t618_battery_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: + return true; + default: + return false; + } +} + +static int rn5t618_adp_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct rn5t618_power_info *info = power_supply_get_drvdata(psy); + unsigned int chgstate; + unsigned int regval; + bool online; + int ret; + + ret = regmap_read(info->rn5t618->regmap, RN5T618_CHGSTATE, &chgstate); + if (ret) + return ret; + + online = !!(chgstate & CHG_STATE_ADP_INPUT); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = online; + break; + case POWER_SUPPLY_PROP_STATUS: + if (!online) { + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + } + val->intval = rn5t618_decode_status(chgstate); + if (val->intval != POWER_SUPPLY_STATUS_CHARGING) + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + + break; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = regmap_read(info->rn5t618->regmap, + RN5T618_REGISET1, ®val); + if (ret < 0) + return ret; + + val->intval = FROM_CUR_REG(regval); + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + if (!info->channel_vadp) + return -ENODATA; + + ret = iio_read_channel_processed_scale(info->channel_vadp, &val->intval, 1000); + if (ret < 0) + return ret; + + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rn5t618_adp_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct rn5t618_power_info *info = power_supply_get_drvdata(psy); + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + if (val->intval > ADP_MAX_CUR) + return -EINVAL; + + if (val->intval < CHG_MIN_CUR) + return -EINVAL; + + ret = regmap_write(info->rn5t618->regmap, RN5T618_REGISET1, + TO_CUR_REG(val->intval)); + if (ret < 0) + return ret; + + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rn5t618_adp_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return true; + default: + return false; + } +} + +static int rc5t619_usb_get_type(struct rn5t618_power_info *info, + union power_supply_propval *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(info->rn5t618->regmap, RN5T618_GCHGDET, ®val); + if (ret < 0) + return ret; + + switch (regval & GCHGDET_TYPE_MASK) { + case GCHGDET_TYPE_SDP: + val->intval = POWER_SUPPLY_USB_TYPE_SDP; + break; + case GCHGDET_TYPE_CDP: + val->intval = POWER_SUPPLY_USB_TYPE_CDP; + break; + case GCHGDET_TYPE_DCP: + val->intval = POWER_SUPPLY_USB_TYPE_DCP; + break; + default: + val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN; + } + + return 0; +} + +static int rn5t618_usb_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct rn5t618_power_info *info = power_supply_get_drvdata(psy); + unsigned int chgstate; + unsigned int regval; + bool online; + int ret; + + ret = regmap_read(info->rn5t618->regmap, RN5T618_CHGSTATE, &chgstate); + if (ret) + return ret; + + online = !!(chgstate & CHG_STATE_USB_INPUT); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = online; + break; + case POWER_SUPPLY_PROP_STATUS: + if (!online) { + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + } + val->intval = rn5t618_decode_status(chgstate); + if (val->intval != POWER_SUPPLY_STATUS_CHARGING) + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + + break; + case POWER_SUPPLY_PROP_USB_TYPE: + if (!online || (info->rn5t618->variant != RC5T619)) + return -ENODATA; + + return rc5t619_usb_get_type(info, val); + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = regmap_read(info->rn5t618->regmap, RN5T618_CHGCTL1, + ®val); + if (ret < 0) + return ret; + + val->intval = 0; + if (regval & 2) { + ret = regmap_read(info->rn5t618->regmap, + RN5T618_REGISET2, + ®val); + if (ret < 0) + return ret; + + val->intval = FROM_CUR_REG(regval); + } + break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + if (!info->channel_vusb) + return -ENODATA; + + ret = iio_read_channel_processed_scale(info->channel_vusb, &val->intval, 1000); + if (ret < 0) + return ret; + + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rn5t618_usb_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct rn5t618_power_info *info = power_supply_get_drvdata(psy); + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + if (val->intval > USB_MAX_CUR) + return -EINVAL; + + if (val->intval < CHG_MIN_CUR) + return -EINVAL; + + ret = regmap_write(info->rn5t618->regmap, RN5T618_REGISET2, + 0xE0 | TO_CUR_REG(val->intval)); + if (ret < 0) + return ret; + + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rn5t618_usb_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return true; + default: + return false; + } +} + +static const struct power_supply_desc rn5t618_battery_desc = { + .name = "rn5t618-battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = rn5t618_battery_props, + .num_properties = ARRAY_SIZE(rn5t618_battery_props), + .get_property = rn5t618_battery_get_property, + .set_property = rn5t618_battery_set_property, + .property_is_writeable = rn5t618_battery_property_is_writeable, +}; + +static const struct power_supply_desc rn5t618_adp_desc = { + .name = "rn5t618-adp", + .type = POWER_SUPPLY_TYPE_MAINS, + .properties = rn5t618_adp_props, + .num_properties = ARRAY_SIZE(rn5t618_adp_props), + .get_property = rn5t618_adp_get_property, + .set_property = rn5t618_adp_set_property, + .property_is_writeable = rn5t618_adp_property_is_writeable, +}; + +static const struct power_supply_desc rn5t618_usb_desc = { + .name = "rn5t618-usb", + .type = POWER_SUPPLY_TYPE_USB, + .usb_types = rn5t618_usb_types, + .num_usb_types = ARRAY_SIZE(rn5t618_usb_types), + .properties = rn5t618_usb_props, + .num_properties = ARRAY_SIZE(rn5t618_usb_props), + .get_property = rn5t618_usb_get_property, + .set_property = rn5t618_usb_set_property, + .property_is_writeable = rn5t618_usb_property_is_writeable, +}; + +static irqreturn_t rn5t618_charger_irq(int irq, void *data) +{ + struct device *dev = data; + struct rn5t618_power_info *info = dev_get_drvdata(dev); + + unsigned int ctrl, stat1, stat2, err; + + regmap_read(info->rn5t618->regmap, RN5T618_CHGERR_IRR, &err); + regmap_read(info->rn5t618->regmap, RN5T618_CHGCTRL_IRR, &ctrl); + regmap_read(info->rn5t618->regmap, RN5T618_CHGSTAT_IRR1, &stat1); + regmap_read(info->rn5t618->regmap, RN5T618_CHGSTAT_IRR2, &stat2); + + regmap_write(info->rn5t618->regmap, RN5T618_CHGERR_IRR, 0); + regmap_write(info->rn5t618->regmap, RN5T618_CHGCTRL_IRR, 0); + regmap_write(info->rn5t618->regmap, RN5T618_CHGSTAT_IRR1, 0); + regmap_write(info->rn5t618->regmap, RN5T618_CHGSTAT_IRR2, 0); + + dev_dbg(dev, "chgerr: %x chgctrl: %x chgstat: %x chgstat2: %x\n", + err, ctrl, stat1, stat2); + + power_supply_changed(info->usb); + power_supply_changed(info->adp); + power_supply_changed(info->battery); + + return IRQ_HANDLED; +} + +static int rn5t618_power_probe(struct platform_device *pdev) +{ + int ret = 0; + unsigned int v; + struct power_supply_config psy_cfg = {}; + struct rn5t618_power_info *info; + + info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->pdev = pdev; + info->rn5t618 = dev_get_drvdata(pdev->dev.parent); + info->irq = -1; + + platform_set_drvdata(pdev, info); + + info->channel_vusb = devm_iio_channel_get(&pdev->dev, "vusb"); + if (IS_ERR(info->channel_vusb)) { + if (PTR_ERR(info->channel_vusb) == -ENODEV) + return -EPROBE_DEFER; + return PTR_ERR(info->channel_vusb); + } + + info->channel_vadp = devm_iio_channel_get(&pdev->dev, "vadp"); + if (IS_ERR(info->channel_vadp)) { + if (PTR_ERR(info->channel_vadp) == -ENODEV) + return -EPROBE_DEFER; + return PTR_ERR(info->channel_vadp); + } + + ret = regmap_read(info->rn5t618->regmap, RN5T618_CONTROL, &v); + if (ret) + return ret; + + if (!(v & FG_ENABLE)) { + /* E.g. the vendor kernels of various Kobo and Tolino Ebook + * readers disable the fuel gauge on shutdown. If a kernel + * without fuel gauge support is booted after that, the fuel + * gauge will get decalibrated. + */ + dev_info(&pdev->dev, "Fuel gauge not enabled, enabling now\n"); + dev_info(&pdev->dev, "Expect imprecise results\n"); + regmap_update_bits(info->rn5t618->regmap, RN5T618_CONTROL, + FG_ENABLE, FG_ENABLE); + } + + psy_cfg.drv_data = info; + info->battery = devm_power_supply_register(&pdev->dev, + &rn5t618_battery_desc, + &psy_cfg); + if (IS_ERR(info->battery)) { + ret = PTR_ERR(info->battery); + dev_err(&pdev->dev, "failed to register battery: %d\n", ret); + return ret; + } + + info->adp = devm_power_supply_register(&pdev->dev, + &rn5t618_adp_desc, + &psy_cfg); + if (IS_ERR(info->adp)) { + ret = PTR_ERR(info->adp); + dev_err(&pdev->dev, "failed to register adp: %d\n", ret); + return ret; + } + + info->usb = devm_power_supply_register(&pdev->dev, + &rn5t618_usb_desc, + &psy_cfg); + if (IS_ERR(info->usb)) { + ret = PTR_ERR(info->usb); + dev_err(&pdev->dev, "failed to register usb: %d\n", ret); + return ret; + } + + if (info->rn5t618->irq_data) + info->irq = regmap_irq_get_virq(info->rn5t618->irq_data, + RN5T618_IRQ_CHG); + + if (info->irq < 0) + info->irq = -1; + else { + ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, + rn5t618_charger_irq, + IRQF_ONESHOT, + "rn5t618_power", + &pdev->dev); + + if (ret < 0) { + dev_err(&pdev->dev, "request IRQ:%d fail\n", + info->irq); + info->irq = -1; + } + } + + return 0; +} + +static struct platform_driver rn5t618_power_driver = { + .driver = { + .name = "rn5t618-power", + }, + .probe = rn5t618_power_probe, +}; + +module_platform_driver(rn5t618_power_driver); +MODULE_ALIAS("platform:rn5t618-power"); +MODULE_DESCRIPTION("Power supply driver for RICOH RN5T618"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3