Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

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().
  ...

1 files changed, 829 insertions, 0 deletions

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 <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/bitops.h>
+#include <linux/errno.h>
+#include <linux/iio/consumer.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/mfd/rn5t618.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#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,
+			  &regval);
+	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, &regval);
+		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, &regval);
+	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,
+				  &regval);
+		if (ret < 0)
+			return ret;
+
+		val->intval = 0;
+		if (regval & 2) {
+			ret = regmap_read(info->rn5t618->regmap,
+					  RN5T618_REGISET2,
+					  &regval);
+			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");