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, 609 insertions, 0 deletions

diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
new file mode 100644
index 000000000..d1075959d
--- /dev/null
+++ b/drivers/power/supply/max17040_battery.c
@@ -0,0 +1,609 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+//  max17040_battery.c
+//  fuel-gauge systems for lithium-ion (Li+) batteries
+//
+//  Copyright (C) 2009 Samsung Electronics
+//  Minkyu Kang <mk7.kang@samsung.com>
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/power_supply.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define MAX17040_VCELL	0x02
+#define MAX17040_SOC	0x04
+#define MAX17040_MODE	0x06
+#define MAX17040_VER	0x08
+#define MAX17040_CONFIG	0x0C
+#define MAX17040_STATUS	0x1A
+#define MAX17040_CMD	0xFE
+
+
+#define MAX17040_DELAY		1000
+#define MAX17040_BATTERY_FULL	95
+#define MAX17040_RCOMP_DEFAULT  0x9700
+
+#define MAX17040_ATHD_MASK		0x3f
+#define MAX17040_ALSC_MASK		0x40
+#define MAX17040_ATHD_DEFAULT_POWER_UP	4
+#define MAX17040_STATUS_HD_MASK		0x1000
+#define MAX17040_STATUS_SC_MASK		0x2000
+#define MAX17040_CFG_RCOMP_MASK		0xff00
+
+enum chip_id {
+	ID_MAX17040,
+	ID_MAX17041,
+	ID_MAX17043,
+	ID_MAX17044,
+	ID_MAX17048,
+	ID_MAX17049,
+	ID_MAX17058,
+	ID_MAX17059,
+};
+
+/* values that differ by chip_id */
+struct chip_data {
+	u16 reset_val;
+	u16 vcell_shift;
+	u16 vcell_mul;
+	u16 vcell_div;
+	u8  has_low_soc_alert;
+	u8  rcomp_bytes;
+	u8  has_soc_alert;
+};
+
+static struct chip_data max17040_family[] = {
+	[ID_MAX17040] = {
+		.reset_val = 0x0054,
+		.vcell_shift = 4,
+		.vcell_mul = 1250,
+		.vcell_div = 1,
+		.has_low_soc_alert = 0,
+		.rcomp_bytes = 2,
+		.has_soc_alert = 0,
+	},
+	[ID_MAX17041] = {
+		.reset_val = 0x0054,
+		.vcell_shift = 4,
+		.vcell_mul = 2500,
+		.vcell_div = 1,
+		.has_low_soc_alert = 0,
+		.rcomp_bytes = 2,
+		.has_soc_alert = 0,
+	},
+	[ID_MAX17043] = {
+		.reset_val = 0x0054,
+		.vcell_shift = 4,
+		.vcell_mul = 1250,
+		.vcell_div = 1,
+		.has_low_soc_alert = 1,
+		.rcomp_bytes = 1,
+		.has_soc_alert = 0,
+	},
+	[ID_MAX17044] = {
+		.reset_val = 0x0054,
+		.vcell_shift = 4,
+		.vcell_mul = 2500,
+		.vcell_div = 1,
+		.has_low_soc_alert = 1,
+		.rcomp_bytes = 1,
+		.has_soc_alert = 0,
+	},
+	[ID_MAX17048] = {
+		.reset_val = 0x5400,
+		.vcell_shift = 0,
+		.vcell_mul = 625,
+		.vcell_div = 8,
+		.has_low_soc_alert = 1,
+		.rcomp_bytes = 1,
+		.has_soc_alert = 1,
+	},
+	[ID_MAX17049] = {
+		.reset_val = 0x5400,
+		.vcell_shift = 0,
+		.vcell_mul = 625,
+		.vcell_div = 4,
+		.has_low_soc_alert = 1,
+		.rcomp_bytes = 1,
+		.has_soc_alert = 1,
+	},
+	[ID_MAX17058] = {
+		.reset_val = 0x5400,
+		.vcell_shift = 0,
+		.vcell_mul = 625,
+		.vcell_div = 8,
+		.has_low_soc_alert = 1,
+		.rcomp_bytes = 1,
+		.has_soc_alert = 0,
+	},
+	[ID_MAX17059] = {
+		.reset_val = 0x5400,
+		.vcell_shift = 0,
+		.vcell_mul = 625,
+		.vcell_div = 4,
+		.has_low_soc_alert = 1,
+		.rcomp_bytes = 1,
+		.has_soc_alert = 0,
+	},
+};
+
+struct max17040_chip {
+	struct i2c_client		*client;
+	struct regmap			*regmap;
+	struct delayed_work		work;
+	struct power_supply		*battery;
+	struct chip_data		data;
+
+	/* battery capacity */
+	int soc;
+	/* Low alert threshold from 32% to 1% of the State of Charge */
+	u32 low_soc_alert;
+	/* some devices return twice the capacity */
+	bool quirk_double_soc;
+	/* higher 8 bits for 17043+, 16 bits for 17040,41 */
+	u16 rcomp;
+};
+
+static int max17040_reset(struct max17040_chip *chip)
+{
+	return regmap_write(chip->regmap, MAX17040_CMD, chip->data.reset_val);
+}
+
+static int max17040_set_low_soc_alert(struct max17040_chip *chip, u32 level)
+{
+	level = 32 - level * (chip->quirk_double_soc ? 2 : 1);
+	return regmap_update_bits(chip->regmap, MAX17040_CONFIG,
+			MAX17040_ATHD_MASK, level);
+}
+
+static int max17040_set_soc_alert(struct max17040_chip *chip, bool enable)
+{
+	return regmap_update_bits(chip->regmap, MAX17040_CONFIG,
+			MAX17040_ALSC_MASK, enable ? MAX17040_ALSC_MASK : 0);
+}
+
+static int max17040_set_rcomp(struct max17040_chip *chip, u16 rcomp)
+{
+	u16 mask = chip->data.rcomp_bytes == 2 ?
+		0xffff : MAX17040_CFG_RCOMP_MASK;
+
+	return regmap_update_bits(chip->regmap, MAX17040_CONFIG, mask, rcomp);
+}
+
+static int max17040_raw_vcell_to_uvolts(struct max17040_chip *chip, u16 vcell)
+{
+	struct chip_data *d = &chip->data;
+
+	return (vcell >> d->vcell_shift) * d->vcell_mul / d->vcell_div;
+}
+
+
+static int max17040_get_vcell(struct max17040_chip *chip)
+{
+	u32 vcell;
+
+	regmap_read(chip->regmap, MAX17040_VCELL, &vcell);
+
+	return max17040_raw_vcell_to_uvolts(chip, vcell);
+}
+
+static int max17040_get_soc(struct max17040_chip *chip)
+{
+	u32 soc;
+
+	regmap_read(chip->regmap, MAX17040_SOC, &soc);
+
+	return soc >> (chip->quirk_double_soc ? 9 : 8);
+}
+
+static int max17040_get_version(struct max17040_chip *chip)
+{
+	int ret;
+	u32 version;
+
+	ret = regmap_read(chip->regmap, MAX17040_VER, &version);
+
+	return ret ? ret : version;
+}
+
+static int max17040_get_online(struct max17040_chip *chip)
+{
+	return 1;
+}
+
+static int max17040_get_of_data(struct max17040_chip *chip)
+{
+	struct device *dev = &chip->client->dev;
+	struct chip_data *data = &max17040_family[
+		(uintptr_t) of_device_get_match_data(dev)];
+	int rcomp_len;
+	u8 rcomp[2];
+
+	chip->quirk_double_soc = device_property_read_bool(dev,
+							   "maxim,double-soc");
+
+	chip->low_soc_alert = MAX17040_ATHD_DEFAULT_POWER_UP;
+	device_property_read_u32(dev,
+				 "maxim,alert-low-soc-level",
+				 &chip->low_soc_alert);
+
+	if (chip->low_soc_alert <= 0 ||
+	    chip->low_soc_alert > (chip->quirk_double_soc ? 16 : 32)) {
+		dev_err(dev, "maxim,alert-low-soc-level out of bounds\n");
+		return -EINVAL;
+	}
+
+	rcomp_len = device_property_count_u8(dev, "maxim,rcomp");
+	chip->rcomp = MAX17040_RCOMP_DEFAULT;
+	if (rcomp_len == data->rcomp_bytes) {
+		if (!device_property_read_u8_array(dev, "maxim,rcomp",
+						   rcomp, rcomp_len))
+			chip->rcomp = rcomp_len == 2 ? rcomp[0] << 8 | rcomp[1] :
+				      rcomp[0] << 8;
+	} else if (rcomp_len > 0) {
+		dev_err(dev, "maxim,rcomp has incorrect length\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void max17040_check_changes(struct max17040_chip *chip)
+{
+	chip->soc = max17040_get_soc(chip);
+}
+
+static void max17040_queue_work(struct max17040_chip *chip)
+{
+	queue_delayed_work(system_power_efficient_wq, &chip->work,
+			   MAX17040_DELAY);
+}
+
+static void max17040_stop_work(void *data)
+{
+	struct max17040_chip *chip = data;
+
+	cancel_delayed_work_sync(&chip->work);
+}
+
+static void max17040_work(struct work_struct *work)
+{
+	struct max17040_chip *chip;
+	int last_soc;
+
+	chip = container_of(work, struct max17040_chip, work.work);
+
+	/* store SOC to check changes */
+	last_soc = chip->soc;
+	max17040_check_changes(chip);
+
+	/* check changes and send uevent */
+	if (last_soc != chip->soc)
+		power_supply_changed(chip->battery);
+
+	max17040_queue_work(chip);
+}
+
+/* Returns true if alert cause was SOC change, not low SOC */
+static bool max17040_handle_soc_alert(struct max17040_chip *chip)
+{
+	bool ret = true;
+	u32 data;
+
+	regmap_read(chip->regmap, MAX17040_STATUS, &data);
+
+	if (data & MAX17040_STATUS_HD_MASK) {
+		// this alert was caused by low soc
+		ret = false;
+	}
+	if (data & MAX17040_STATUS_SC_MASK) {
+		// soc change bit -- deassert to mark as handled
+		regmap_write(chip->regmap, MAX17040_STATUS,
+				data & ~MAX17040_STATUS_SC_MASK);
+	}
+
+	return ret;
+}
+
+static irqreturn_t max17040_thread_handler(int id, void *dev)
+{
+	struct max17040_chip *chip = dev;
+
+	if (!(chip->data.has_soc_alert && max17040_handle_soc_alert(chip)))
+		dev_warn(&chip->client->dev, "IRQ: Alert battery low level\n");
+
+	/* read registers */
+	max17040_check_changes(chip);
+
+	/* send uevent */
+	power_supply_changed(chip->battery);
+
+	/* reset alert bit */
+	max17040_set_low_soc_alert(chip, chip->low_soc_alert);
+
+	return IRQ_HANDLED;
+}
+
+static int max17040_enable_alert_irq(struct max17040_chip *chip)
+{
+	struct i2c_client *client = chip->client;
+	int ret;
+
+	ret = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+					max17040_thread_handler, IRQF_ONESHOT,
+					chip->battery->desc->name, chip);
+
+	return ret;
+}
+
+static int max17040_prop_writeable(struct power_supply *psy,
+				   enum power_supply_property psp)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
+		return 1;
+	default:
+		return 0;
+	}
+}
+
+static int max17040_set_property(struct power_supply *psy,
+			    enum power_supply_property psp,
+			    const union power_supply_propval *val)
+{
+	struct max17040_chip *chip = power_supply_get_drvdata(psy);
+	int ret;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
+		/* alert threshold can be programmed from 1% up to 16/32% */
+		if ((val->intval < 1) ||
+		    (val->intval > (chip->quirk_double_soc ? 16 : 32))) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = max17040_set_low_soc_alert(chip, val->intval);
+		chip->low_soc_alert = val->intval;
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static int max17040_get_property(struct power_supply *psy,
+			    enum power_supply_property psp,
+			    union power_supply_propval *val)
+{
+	struct max17040_chip *chip = power_supply_get_drvdata(psy);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = max17040_get_online(chip);
+		break;
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		val->intval = max17040_get_vcell(chip);
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY:
+		val->intval = max17040_get_soc(chip);
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
+		val->intval = chip->low_soc_alert;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static const struct regmap_config max17040_regmap = {
+	.reg_bits	= 8,
+	.reg_stride	= 2,
+	.val_bits	= 16,
+	.val_format_endian = REGMAP_ENDIAN_BIG,
+};
+
+static enum power_supply_property max17040_battery_props[] = {
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN,
+};
+
+static const struct power_supply_desc max17040_battery_desc = {
+	.name			= "battery",
+	.type			= POWER_SUPPLY_TYPE_BATTERY,
+	.get_property		= max17040_get_property,
+	.set_property		= max17040_set_property,
+	.property_is_writeable  = max17040_prop_writeable,
+	.properties		= max17040_battery_props,
+	.num_properties		= ARRAY_SIZE(max17040_battery_props),
+};
+
+static int max17040_probe(struct i2c_client *client)
+{
+	const struct i2c_device_id *id = i2c_client_get_device_id(client);
+	struct i2c_adapter *adapter = client->adapter;
+	struct power_supply_config psy_cfg = {};
+	struct max17040_chip *chip;
+	enum chip_id chip_id;
+	bool enable_irq = false;
+	int ret;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
+		return -EIO;
+
+	chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->client = client;
+	chip->regmap = devm_regmap_init_i2c(client, &max17040_regmap);
+	if (IS_ERR(chip->regmap))
+		return PTR_ERR(chip->regmap);
+	chip_id = (enum chip_id) id->driver_data;
+	if (client->dev.of_node) {
+		ret = max17040_get_of_data(chip);
+		if (ret)
+			return ret;
+		chip_id = (uintptr_t)of_device_get_match_data(&client->dev);
+	}
+	chip->data = max17040_family[chip_id];
+
+	i2c_set_clientdata(client, chip);
+	psy_cfg.drv_data = chip;
+
+	chip->battery = devm_power_supply_register(&client->dev,
+				&max17040_battery_desc, &psy_cfg);
+	if (IS_ERR(chip->battery)) {
+		dev_err(&client->dev, "failed: power supply register\n");
+		return PTR_ERR(chip->battery);
+	}
+
+	ret = max17040_get_version(chip);
+	if (ret < 0)
+		return ret;
+	dev_dbg(&chip->client->dev, "MAX17040 Fuel-Gauge Ver 0x%x\n", ret);
+
+	if (chip_id == ID_MAX17040 || chip_id == ID_MAX17041)
+		max17040_reset(chip);
+
+	max17040_set_rcomp(chip, chip->rcomp);
+
+	/* check interrupt */
+	if (client->irq && chip->data.has_low_soc_alert) {
+		ret = max17040_set_low_soc_alert(chip, chip->low_soc_alert);
+		if (ret) {
+			dev_err(&client->dev,
+				"Failed to set low SOC alert: err %d\n", ret);
+			return ret;
+		}
+
+		enable_irq = true;
+	}
+
+	if (client->irq && chip->data.has_soc_alert) {
+		ret = max17040_set_soc_alert(chip, 1);
+		if (ret) {
+			dev_err(&client->dev,
+				"Failed to set SOC alert: err %d\n", ret);
+			return ret;
+		}
+		enable_irq = true;
+	} else {
+		/* soc alerts negate the need for polling */
+		INIT_DEFERRABLE_WORK(&chip->work, max17040_work);
+		ret = devm_add_action(&client->dev, max17040_stop_work, chip);
+		if (ret)
+			return ret;
+		max17040_queue_work(chip);
+	}
+
+	if (enable_irq) {
+		ret = max17040_enable_alert_irq(chip);
+		if (ret) {
+			client->irq = 0;
+			dev_warn(&client->dev,
+				 "Failed to get IRQ err %d\n", ret);
+		}
+	}
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+
+static int max17040_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max17040_chip *chip = i2c_get_clientdata(client);
+
+	if (client->irq && chip->data.has_soc_alert)
+		// disable soc alert to prevent wakeup
+		max17040_set_soc_alert(chip, 0);
+	else
+		cancel_delayed_work(&chip->work);
+
+	if (client->irq && device_may_wakeup(dev))
+		enable_irq_wake(client->irq);
+
+	return 0;
+}
+
+static int max17040_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max17040_chip *chip = i2c_get_clientdata(client);
+
+	if (client->irq && device_may_wakeup(dev))
+		disable_irq_wake(client->irq);
+
+	if (client->irq && chip->data.has_soc_alert)
+		max17040_set_soc_alert(chip, 1);
+	else
+		max17040_queue_work(chip);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(max17040_pm_ops, max17040_suspend, max17040_resume);
+#define MAX17040_PM_OPS (&max17040_pm_ops)
+
+#else
+
+#define MAX17040_PM_OPS NULL
+
+#endif /* CONFIG_PM_SLEEP */
+
+static const struct i2c_device_id max17040_id[] = {
+	{ "max17040", ID_MAX17040 },
+	{ "max17041", ID_MAX17041 },
+	{ "max17043", ID_MAX17043 },
+	{ "max77836-battery", ID_MAX17043 },
+	{ "max17044", ID_MAX17044 },
+	{ "max17048", ID_MAX17048 },
+	{ "max17049", ID_MAX17049 },
+	{ "max17058", ID_MAX17058 },
+	{ "max17059", ID_MAX17059 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, max17040_id);
+
+static const struct of_device_id max17040_of_match[] = {
+	{ .compatible = "maxim,max17040", .data = (void *) ID_MAX17040 },
+	{ .compatible = "maxim,max17041", .data = (void *) ID_MAX17041 },
+	{ .compatible = "maxim,max17043", .data = (void *) ID_MAX17043 },
+	{ .compatible = "maxim,max77836-battery", .data = (void *) ID_MAX17043 },
+	{ .compatible = "maxim,max17044", .data = (void *) ID_MAX17044 },
+	{ .compatible = "maxim,max17048", .data = (void *) ID_MAX17048 },
+	{ .compatible = "maxim,max17049", .data = (void *) ID_MAX17049 },
+	{ .compatible = "maxim,max17058", .data = (void *) ID_MAX17058 },
+	{ .compatible = "maxim,max17059", .data = (void *) ID_MAX17059 },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, max17040_of_match);
+
+static struct i2c_driver max17040_i2c_driver = {
+	.driver	= {
+		.name	= "max17040",
+		.of_match_table = max17040_of_match,
+		.pm	= MAX17040_PM_OPS,
+	},
+	.probe_new	= max17040_probe,
+	.id_table	= max17040_id,
+};
+module_i2c_driver(max17040_i2c_driver);
+
+MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
+MODULE_DESCRIPTION("MAX17040 Fuel Gauge");
+MODULE_LICENSE("GPL");