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, 961 insertions, 0 deletions

diff --git a/drivers/power/supply/mt6370-charger.c b/drivers/power/supply/mt6370-charger.c
new file mode 100644
index 000000000..f27dae504
--- /dev/null
+++ b/drivers/power/supply/mt6370-charger.c
@@ -0,0 +1,961 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022 Richtek Technology Corp.
+ *
+ * Author: ChiaEn Wu <chiaen_wu@richtek.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/devm-helpers.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/consumer.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/linear_range.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/workqueue.h>
+
+#define MT6370_REG_CHG_CTRL1		0x111
+#define MT6370_REG_CHG_CTRL2		0x112
+#define MT6370_REG_CHG_CTRL3		0x113
+#define MT6370_REG_CHG_CTRL4		0x114
+#define MT6370_REG_CHG_CTRL5		0x115
+#define MT6370_REG_CHG_CTRL6		0x116
+#define MT6370_REG_CHG_CTRL7		0x117
+#define MT6370_REG_CHG_CTRL8		0x118
+#define MT6370_REG_CHG_CTRL9		0x119
+#define MT6370_REG_CHG_CTRL10		0x11A
+#define MT6370_REG_DEVICE_TYPE		0x122
+#define MT6370_REG_USB_STATUS1		0x127
+#define MT6370_REG_CHG_STAT		0x14A
+#define MT6370_REG_FLED_EN		0x17E
+#define MT6370_REG_CHG_STAT1		0X1D0
+#define MT6370_REG_OVPCTRL_STAT		0x1D8
+
+#define MT6370_VOBST_MASK		GENMASK(7, 2)
+#define MT6370_OTG_PIN_EN_MASK		BIT(1)
+#define MT6370_OPA_MODE_MASK		BIT(0)
+#define MT6370_OTG_OC_MASK		GENMASK(2, 0)
+
+#define MT6370_MIVR_IBUS_TH_100_mA	100000
+#define MT6370_ADC_CHAN_IBUS		5
+#define MT6370_ADC_CHAN_MAX		9
+
+enum mt6370_chg_reg_field {
+	/* MT6370_REG_CHG_CTRL2 */
+	F_IINLMTSEL, F_CFO_EN, F_CHG_EN,
+	/* MT6370_REG_CHG_CTRL3 */
+	F_IAICR, F_AICR_EN, F_ILIM_EN,
+	/* MT6370_REG_CHG_CTRL4 */
+	F_VOREG,
+	/* MT6370_REG_CHG_CTRL6 */
+	F_VMIVR,
+	/* MT6370_REG_CHG_CTRL7 */
+	F_ICHG,
+	/* MT6370_REG_CHG_CTRL8 */
+	F_IPREC,
+	/* MT6370_REG_CHG_CTRL9 */
+	F_IEOC,
+	/* MT6370_REG_DEVICE_TYPE */
+	F_USBCHGEN,
+	/* MT6370_REG_USB_STATUS1 */
+	F_USB_STAT, F_CHGDET,
+	/* MT6370_REG_CHG_STAT */
+	F_CHG_STAT, F_BOOST_STAT, F_VBAT_LVL,
+	/* MT6370_REG_FLED_EN */
+	F_FL_STROBE,
+	/* MT6370_REG_CHG_STAT1 */
+	F_CHG_MIVR_STAT,
+	/* MT6370_REG_OVPCTRL_STAT */
+	F_UVP_D_STAT,
+	F_MAX
+};
+
+enum mt6370_irq {
+	MT6370_IRQ_ATTACH_I = 0,
+	MT6370_IRQ_UVP_D_EVT,
+	MT6370_IRQ_MIVR,
+	MT6370_IRQ_MAX
+};
+
+struct mt6370_priv {
+	struct device *dev;
+	struct iio_channel *iio_adcs;
+	struct mutex attach_lock;
+	struct power_supply *psy;
+	struct regmap *regmap;
+	struct regmap_field *rmap_fields[F_MAX];
+	struct regulator_dev *rdev;
+	struct workqueue_struct *wq;
+	struct work_struct bc12_work;
+	struct delayed_work mivr_dwork;
+	unsigned int irq_nums[MT6370_IRQ_MAX];
+	int attach;
+	int psy_usb_type;
+	bool pwr_rdy;
+};
+
+enum mt6370_usb_status {
+	MT6370_USB_STAT_NO_VBUS = 0,
+	MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING,
+	MT6370_USB_STAT_SDP,
+	MT6370_USB_STAT_SDP_NSTD,
+	MT6370_USB_STAT_DCP,
+	MT6370_USB_STAT_CDP,
+	MT6370_USB_STAT_MAX
+};
+
+struct mt6370_chg_field {
+	const char *name;
+	const struct linear_range *range;
+	struct reg_field field;
+};
+
+enum {
+	MT6370_RANGE_F_IAICR = 0,
+	MT6370_RANGE_F_VOREG,
+	MT6370_RANGE_F_VMIVR,
+	MT6370_RANGE_F_ICHG,
+	MT6370_RANGE_F_IPREC,
+	MT6370_RANGE_F_IEOC,
+	MT6370_RANGE_F_MAX
+};
+
+static const struct linear_range mt6370_chg_ranges[MT6370_RANGE_F_MAX] = {
+	LINEAR_RANGE_IDX(MT6370_RANGE_F_IAICR, 100000, 0x0, 0x3F, 50000),
+	LINEAR_RANGE_IDX(MT6370_RANGE_F_VOREG, 3900000, 0x0, 0x51, 10000),
+	LINEAR_RANGE_IDX(MT6370_RANGE_F_VMIVR, 3900000, 0x0, 0x5F, 100000),
+	LINEAR_RANGE_IDX(MT6370_RANGE_F_ICHG, 900000, 0x08, 0x31, 100000),
+	LINEAR_RANGE_IDX(MT6370_RANGE_F_IPREC, 100000, 0x0, 0x0F, 50000),
+	LINEAR_RANGE_IDX(MT6370_RANGE_F_IEOC, 100000, 0x0, 0x0F, 50000),
+};
+
+#define MT6370_CHG_FIELD(_fd, _reg, _lsb, _msb)				\
+[_fd] = {								\
+	.name = #_fd,							\
+	.range = NULL,							\
+	.field = REG_FIELD(_reg, _lsb, _msb),				\
+}
+
+#define MT6370_CHG_FIELD_RANGE(_fd, _reg, _lsb, _msb)			\
+[_fd] = {								\
+	.name = #_fd,							\
+	.range = &mt6370_chg_ranges[MT6370_RANGE_##_fd],		\
+	.field = REG_FIELD(_reg, _lsb, _msb),				\
+}
+
+static const struct mt6370_chg_field mt6370_chg_fields[F_MAX] = {
+	MT6370_CHG_FIELD(F_IINLMTSEL, MT6370_REG_CHG_CTRL2, 2, 3),
+	MT6370_CHG_FIELD(F_CFO_EN, MT6370_REG_CHG_CTRL2, 1, 1),
+	MT6370_CHG_FIELD(F_CHG_EN, MT6370_REG_CHG_CTRL2, 0, 0),
+	MT6370_CHG_FIELD_RANGE(F_IAICR, MT6370_REG_CHG_CTRL3, 2, 7),
+	MT6370_CHG_FIELD(F_AICR_EN, MT6370_REG_CHG_CTRL3, 1, 1),
+	MT6370_CHG_FIELD(F_ILIM_EN, MT6370_REG_CHG_CTRL3, 0, 0),
+	MT6370_CHG_FIELD_RANGE(F_VOREG, MT6370_REG_CHG_CTRL4, 1, 7),
+	MT6370_CHG_FIELD_RANGE(F_VMIVR, MT6370_REG_CHG_CTRL6, 1, 7),
+	MT6370_CHG_FIELD_RANGE(F_ICHG, MT6370_REG_CHG_CTRL7, 2, 7),
+	MT6370_CHG_FIELD_RANGE(F_IPREC, MT6370_REG_CHG_CTRL8, 0, 3),
+	MT6370_CHG_FIELD_RANGE(F_IEOC, MT6370_REG_CHG_CTRL9, 4, 7),
+	MT6370_CHG_FIELD(F_USBCHGEN, MT6370_REG_DEVICE_TYPE, 7, 7),
+	MT6370_CHG_FIELD(F_USB_STAT, MT6370_REG_USB_STATUS1, 4, 6),
+	MT6370_CHG_FIELD(F_CHGDET, MT6370_REG_USB_STATUS1, 3, 3),
+	MT6370_CHG_FIELD(F_CHG_STAT, MT6370_REG_CHG_STAT, 6, 7),
+	MT6370_CHG_FIELD(F_BOOST_STAT, MT6370_REG_CHG_STAT, 3, 3),
+	MT6370_CHG_FIELD(F_VBAT_LVL, MT6370_REG_CHG_STAT, 5, 5),
+	MT6370_CHG_FIELD(F_FL_STROBE, MT6370_REG_FLED_EN, 2, 2),
+	MT6370_CHG_FIELD(F_CHG_MIVR_STAT, MT6370_REG_CHG_STAT1, 6, 6),
+	MT6370_CHG_FIELD(F_UVP_D_STAT, MT6370_REG_OVPCTRL_STAT, 4, 4),
+};
+
+static inline int mt6370_chg_field_get(struct mt6370_priv *priv,
+				       enum mt6370_chg_reg_field fd,
+				       unsigned int *val)
+{
+	int ret;
+	unsigned int reg_val;
+
+	ret = regmap_field_read(priv->rmap_fields[fd], &reg_val);
+	if (ret)
+		return ret;
+
+	if (mt6370_chg_fields[fd].range)
+		return linear_range_get_value(mt6370_chg_fields[fd].range,
+					       reg_val, val);
+
+	*val = reg_val;
+	return 0;
+}
+
+static inline int mt6370_chg_field_set(struct mt6370_priv *priv,
+				       enum mt6370_chg_reg_field fd,
+				       unsigned int val)
+{
+	int ret;
+	bool f;
+	const struct linear_range *r;
+
+	if (mt6370_chg_fields[fd].range) {
+		r = mt6370_chg_fields[fd].range;
+
+		if (fd == F_VMIVR) {
+			ret = linear_range_get_selector_high(r, val, &val, &f);
+			if (ret)
+				val = r->max_sel;
+		} else {
+			linear_range_get_selector_within(r, val, &val);
+		}
+	}
+
+	return regmap_field_write(priv->rmap_fields[fd], val);
+}
+
+enum {
+	MT6370_CHG_STAT_READY = 0,
+	MT6370_CHG_STAT_CHARGE_IN_PROGRESS,
+	MT6370_CHG_STAT_DONE,
+	MT6370_CHG_STAT_FAULT,
+	MT6370_CHG_STAT_MAX
+};
+
+enum {
+	MT6370_ATTACH_STAT_DETACH = 0,
+	MT6370_ATTACH_STAT_ATTACH_WAIT_FOR_BC12,
+	MT6370_ATTACH_STAT_ATTACH_BC12_DONE,
+	MT6370_ATTACH_STAT_ATTACH_MAX
+};
+
+static int mt6370_chg_otg_of_parse_cb(struct device_node *of,
+				      const struct regulator_desc *rdesc,
+				      struct regulator_config *rcfg)
+{
+	struct mt6370_priv *priv = rcfg->driver_data;
+
+	rcfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of),
+						 "enable", 0, GPIOD_OUT_LOW |
+						 GPIOD_FLAGS_BIT_NONEXCLUSIVE,
+						 rdesc->name);
+	if (IS_ERR(rcfg->ena_gpiod)) {
+		rcfg->ena_gpiod = NULL;
+		return 0;
+	}
+
+	return regmap_update_bits(priv->regmap, MT6370_REG_CHG_CTRL1,
+				  MT6370_OTG_PIN_EN_MASK,
+				  MT6370_OTG_PIN_EN_MASK);
+}
+
+static void mt6370_chg_bc12_work_func(struct work_struct *work)
+{
+	struct mt6370_priv *priv = container_of(work, struct mt6370_priv,
+						bc12_work);
+	int ret;
+	bool rpt_psy = false;
+	unsigned int attach, usb_stat;
+
+	mutex_lock(&priv->attach_lock);
+	attach = priv->attach;
+
+	switch (attach) {
+	case MT6370_ATTACH_STAT_DETACH:
+		usb_stat = 0;
+		break;
+	case MT6370_ATTACH_STAT_ATTACH_WAIT_FOR_BC12:
+		ret = mt6370_chg_field_set(priv, F_USBCHGEN, attach);
+		if (ret)
+			dev_err(priv->dev, "Failed to enable USB CHG EN\n");
+		goto bc12_work_func_out;
+	case MT6370_ATTACH_STAT_ATTACH_BC12_DONE:
+		ret = mt6370_chg_field_get(priv, F_USB_STAT, &usb_stat);
+		if (ret) {
+			dev_err(priv->dev, "Failed to get USB status\n");
+			goto bc12_work_func_out;
+		}
+		break;
+	default:
+		dev_err(priv->dev, "Invalid attach state\n");
+		goto bc12_work_func_out;
+	}
+
+	rpt_psy = true;
+
+	switch (usb_stat) {
+	case MT6370_USB_STAT_SDP:
+	case MT6370_USB_STAT_SDP_NSTD:
+		priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+		break;
+	case MT6370_USB_STAT_DCP:
+		priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+		break;
+	case MT6370_USB_STAT_CDP:
+		priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
+		break;
+	case MT6370_USB_STAT_NO_VBUS:
+	case MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING:
+	default:
+		priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+		break;
+	}
+
+bc12_work_func_out:
+	mutex_unlock(&priv->attach_lock);
+
+	if (rpt_psy)
+		power_supply_changed(priv->psy);
+}
+
+static int mt6370_chg_toggle_cfo(struct mt6370_priv *priv)
+{
+	int ret;
+	unsigned int fl_strobe;
+
+	/* check if flash led in strobe mode */
+	ret = mt6370_chg_field_get(priv, F_FL_STROBE, &fl_strobe);
+	if (ret) {
+		dev_err(priv->dev, "Failed to get FL_STROBE_EN\n");
+		return ret;
+	}
+
+	if (fl_strobe) {
+		dev_err(priv->dev, "Flash led is still in strobe mode\n");
+		return ret;
+	}
+
+	/* cfo off */
+	ret = mt6370_chg_field_set(priv, F_CFO_EN, 0);
+	if (ret) {
+		dev_err(priv->dev, "Failed to disable CFO_EN\n");
+		return ret;
+	}
+
+	/* cfo on */
+	ret = mt6370_chg_field_set(priv, F_CFO_EN, 1);
+	if (ret)
+		dev_err(priv->dev, "Failed to enable CFO_EN\n");
+
+	return ret;
+}
+
+static int mt6370_chg_read_adc_chan(struct mt6370_priv *priv, unsigned int chan,
+				    int *val)
+{
+	int ret;
+
+	if (chan >= MT6370_ADC_CHAN_MAX)
+		return -EINVAL;
+
+	ret = iio_read_channel_processed(&priv->iio_adcs[chan], val);
+	if (ret)
+		dev_err(priv->dev, "Failed to read ADC\n");
+
+	return ret;
+}
+
+static void mt6370_chg_mivr_dwork_func(struct work_struct *work)
+{
+	struct mt6370_priv *priv = container_of(work, struct mt6370_priv,
+						mivr_dwork.work);
+	int ret;
+	unsigned int mivr_stat, ibus;
+
+	ret = mt6370_chg_field_get(priv, F_CHG_MIVR_STAT, &mivr_stat);
+	if (ret) {
+		dev_err(priv->dev, "Failed to get mivr state\n");
+		goto mivr_handler_out;
+	}
+
+	if (!mivr_stat)
+		goto mivr_handler_out;
+
+	ret = mt6370_chg_read_adc_chan(priv, MT6370_ADC_CHAN_IBUS, &ibus);
+	if (ret) {
+		dev_err(priv->dev, "Failed to get ibus\n");
+		goto mivr_handler_out;
+	}
+
+	if (ibus < MT6370_MIVR_IBUS_TH_100_mA) {
+		ret = mt6370_chg_toggle_cfo(priv);
+		if (ret)
+			dev_err(priv->dev, "Failed to toggle cfo\n");
+	}
+
+mivr_handler_out:
+	enable_irq(priv->irq_nums[MT6370_IRQ_MIVR]);
+	pm_relax(priv->dev);
+}
+
+static void mt6370_chg_pwr_rdy_check(struct mt6370_priv *priv)
+{
+	int ret;
+	unsigned int opposite_pwr_rdy, otg_en;
+	union power_supply_propval val;
+
+	/* Check in OTG mode or not */
+	ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en);
+	if (ret) {
+		dev_err(priv->dev, "Failed to get OTG state\n");
+		return;
+	}
+
+	if (otg_en)
+		return;
+
+	ret = mt6370_chg_field_get(priv, F_UVP_D_STAT, &opposite_pwr_rdy);
+	if (ret) {
+		dev_err(priv->dev, "Failed to get opposite power ready state\n");
+		return;
+	}
+
+	val.intval = opposite_pwr_rdy ?
+		     MT6370_ATTACH_STAT_DETACH :
+		     MT6370_ATTACH_STAT_ATTACH_WAIT_FOR_BC12;
+
+	ret = power_supply_set_property(priv->psy, POWER_SUPPLY_PROP_ONLINE,
+					&val);
+	if (ret)
+		dev_err(priv->dev, "Failed to start attach/detach flow\n");
+}
+
+static int mt6370_chg_get_online(struct mt6370_priv *priv,
+				 union power_supply_propval *val)
+{
+	mutex_lock(&priv->attach_lock);
+	val->intval = !!priv->attach;
+	mutex_unlock(&priv->attach_lock);
+
+	return 0;
+}
+
+static int mt6370_chg_get_status(struct mt6370_priv *priv,
+				 union power_supply_propval *val)
+{
+	int ret;
+	unsigned int chg_stat;
+	union power_supply_propval online;
+
+	ret = power_supply_get_property(priv->psy, POWER_SUPPLY_PROP_ONLINE,
+					&online);
+	if (ret) {
+		dev_err(priv->dev, "Failed to get online status\n");
+		return ret;
+	}
+
+	if (!online.intval) {
+		val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+		return 0;
+	}
+
+	ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat);
+	if (ret)
+		return ret;
+
+	switch (chg_stat) {
+	case MT6370_CHG_STAT_READY:
+	case MT6370_CHG_STAT_FAULT:
+		val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+		return ret;
+	case MT6370_CHG_STAT_CHARGE_IN_PROGRESS:
+		val->intval = POWER_SUPPLY_STATUS_CHARGING;
+		return ret;
+	case MT6370_CHG_STAT_DONE:
+		val->intval = POWER_SUPPLY_STATUS_FULL;
+		return ret;
+	default:
+		val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
+		return ret;
+	}
+}
+
+static int mt6370_chg_get_charge_type(struct mt6370_priv *priv,
+				      union power_supply_propval *val)
+{
+	int type, ret;
+	unsigned int chg_stat, vbat_lvl;
+
+	ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat);
+	if (ret)
+		return ret;
+
+	ret = mt6370_chg_field_get(priv, F_VBAT_LVL, &vbat_lvl);
+	if (ret)
+		return ret;
+
+	switch (chg_stat) {
+	case MT6370_CHG_STAT_CHARGE_IN_PROGRESS:
+		if (vbat_lvl)
+			type = POWER_SUPPLY_CHARGE_TYPE_FAST;
+		else
+			type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+		break;
+	case MT6370_CHG_STAT_READY:
+	case MT6370_CHG_STAT_DONE:
+	case MT6370_CHG_STAT_FAULT:
+	default:
+		type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
+	}
+
+	val->intval = type;
+
+	return 0;
+}
+
+static int mt6370_chg_set_online(struct mt6370_priv *priv,
+				 const union power_supply_propval *val)
+{
+	bool pwr_rdy = !!val->intval;
+
+	mutex_lock(&priv->attach_lock);
+	if (pwr_rdy == !!priv->attach) {
+		dev_err(priv->dev, "pwr_rdy is same(%d)\n", pwr_rdy);
+		mutex_unlock(&priv->attach_lock);
+		return 0;
+	}
+
+	priv->attach = pwr_rdy;
+	mutex_unlock(&priv->attach_lock);
+
+	if (!queue_work(priv->wq, &priv->bc12_work))
+		dev_err(priv->dev, "bc12 work has already queued\n");
+
+	return 0;
+}
+
+static int mt6370_chg_get_property(struct power_supply *psy,
+				   enum power_supply_property psp,
+				   union power_supply_propval *val)
+{
+	struct mt6370_priv *priv = power_supply_get_drvdata(psy);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		return mt6370_chg_get_online(priv, val);
+	case POWER_SUPPLY_PROP_STATUS:
+		return mt6370_chg_get_status(priv, val);
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		return mt6370_chg_get_charge_type(priv, val);
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+		return mt6370_chg_field_get(priv, F_ICHG, &val->intval);
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+		val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_ICHG]);
+		return 0;
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+		return mt6370_chg_field_get(priv, F_VOREG, &val->intval);
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+		val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_VOREG]);
+		return 0;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		return mt6370_chg_field_get(priv, F_IAICR, &val->intval);
+	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+		return mt6370_chg_field_get(priv, F_VMIVR, &val->intval);
+	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+		return mt6370_chg_field_get(priv, F_IPREC, &val->intval);
+	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+		return mt6370_chg_field_get(priv, F_IEOC, &val->intval);
+	case POWER_SUPPLY_PROP_USB_TYPE:
+		val->intval = priv->psy_usb_type;
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int mt6370_chg_set_property(struct power_supply *psy,
+				   enum power_supply_property psp,
+				   const union power_supply_propval *val)
+{
+	struct mt6370_priv *priv = power_supply_get_drvdata(psy);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		return mt6370_chg_set_online(priv, val);
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+		return mt6370_chg_field_set(priv, F_ICHG, val->intval);
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+		return mt6370_chg_field_set(priv, F_VOREG, val->intval);
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		return mt6370_chg_field_set(priv, F_IAICR, val->intval);
+	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+		return mt6370_chg_field_set(priv, F_VMIVR, val->intval);
+	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+		return mt6370_chg_field_set(priv, F_IPREC, val->intval);
+	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+		return mt6370_chg_field_set(priv, F_IEOC, val->intval);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int mt6370_chg_property_is_writeable(struct power_supply *psy,
+					    enum power_supply_property psp)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+		return 1;
+	default:
+		return 0;
+	}
+}
+
+static enum power_supply_property mt6370_chg_properties[] = {
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
+	POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
+	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+	POWER_SUPPLY_PROP_USB_TYPE,
+};
+
+static enum power_supply_usb_type mt6370_chg_usb_types[] = {
+	POWER_SUPPLY_USB_TYPE_UNKNOWN,
+	POWER_SUPPLY_USB_TYPE_SDP,
+	POWER_SUPPLY_USB_TYPE_CDP,
+	POWER_SUPPLY_USB_TYPE_DCP,
+};
+
+static const struct power_supply_desc mt6370_chg_psy_desc = {
+	.name = "mt6370-charger",
+	.type = POWER_SUPPLY_TYPE_USB,
+	.properties = mt6370_chg_properties,
+	.num_properties = ARRAY_SIZE(mt6370_chg_properties),
+	.get_property = mt6370_chg_get_property,
+	.set_property = mt6370_chg_set_property,
+	.property_is_writeable = mt6370_chg_property_is_writeable,
+	.usb_types = mt6370_chg_usb_types,
+	.num_usb_types = ARRAY_SIZE(mt6370_chg_usb_types),
+};
+
+static const struct regulator_ops mt6370_chg_otg_ops = {
+	.list_voltage = regulator_list_voltage_linear,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_current_limit = regulator_set_current_limit_regmap,
+	.get_current_limit = regulator_get_current_limit_regmap,
+};
+
+static const u32 mt6370_chg_otg_oc_ma[] = {
+	500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000,
+};
+
+static const struct regulator_desc mt6370_chg_otg_rdesc = {
+	.of_match = "usb-otg-vbus-regulator",
+	.of_parse_cb = mt6370_chg_otg_of_parse_cb,
+	.name = "mt6370-usb-otg-vbus",
+	.ops = &mt6370_chg_otg_ops,
+	.owner = THIS_MODULE,
+	.type = REGULATOR_VOLTAGE,
+	.min_uV = 4425000,
+	.uV_step = 25000,
+	.n_voltages = 57,
+	.vsel_reg = MT6370_REG_CHG_CTRL5,
+	.vsel_mask = MT6370_VOBST_MASK,
+	.enable_reg = MT6370_REG_CHG_CTRL1,
+	.enable_mask = MT6370_OPA_MODE_MASK,
+	.curr_table = mt6370_chg_otg_oc_ma,
+	.n_current_limits = ARRAY_SIZE(mt6370_chg_otg_oc_ma),
+	.csel_reg = MT6370_REG_CHG_CTRL10,
+	.csel_mask = MT6370_OTG_OC_MASK,
+};
+
+static int mt6370_chg_init_rmap_fields(struct mt6370_priv *priv)
+{
+	int i;
+	const struct mt6370_chg_field *fds = mt6370_chg_fields;
+
+	for (i = 0; i < F_MAX; i++) {
+		priv->rmap_fields[i] = devm_regmap_field_alloc(priv->dev,
+							       priv->regmap,
+							       fds[i].field);
+		if (IS_ERR(priv->rmap_fields[i]))
+			return dev_err_probe(priv->dev,
+					PTR_ERR(priv->rmap_fields[i]),
+					"Failed to allocate regmapfield[%s]\n",
+					fds[i].name);
+	}
+
+	return 0;
+}
+
+static int mt6370_chg_init_setting(struct mt6370_priv *priv)
+{
+	int ret;
+
+	/* Disable usb_chg_en */
+	ret = mt6370_chg_field_set(priv, F_USBCHGEN, 0);
+	if (ret) {
+		dev_err(priv->dev, "Failed to disable usb_chg_en\n");
+		return ret;
+	}
+
+	/* Disable input current limit */
+	ret = mt6370_chg_field_set(priv, F_ILIM_EN, 0);
+	if (ret) {
+		dev_err(priv->dev, "Failed to disable input current limit\n");
+		return ret;
+	}
+
+	/* ICHG/IEOC Workaround, ICHG can not be set less than 900mA */
+	ret = mt6370_chg_field_set(priv, F_ICHG, 900000);
+	if (ret) {
+		dev_err(priv->dev, "Failed to set ICHG to 900mA");
+		return ret;
+	}
+
+	/* Change input current limit selection to using IAICR results */
+	ret = mt6370_chg_field_set(priv, F_IINLMTSEL, 2);
+	if (ret) {
+		dev_err(priv->dev, "Failed to set IINLMTSEL\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+#define MT6370_CHG_DT_PROP_DECL(_name, _type, _field)	\
+{							\
+	.name = "mediatek,chg-" #_name,			\
+	.type = MT6370_PARSE_TYPE_##_type,		\
+	.fd = _field,					\
+}
+
+static int mt6370_chg_init_otg_regulator(struct mt6370_priv *priv)
+{
+	struct regulator_config rcfg = {
+		.dev = priv->dev,
+		.regmap = priv->regmap,
+		.driver_data = priv,
+	};
+
+	priv->rdev = devm_regulator_register(priv->dev, &mt6370_chg_otg_rdesc,
+					     &rcfg);
+
+	return PTR_ERR_OR_ZERO(priv->rdev);
+}
+
+static int mt6370_chg_init_psy(struct mt6370_priv *priv)
+{
+	struct power_supply_config cfg = {
+		.drv_data = priv,
+		.of_node = dev_of_node(priv->dev),
+	};
+
+	priv->psy = devm_power_supply_register(priv->dev, &mt6370_chg_psy_desc,
+					       &cfg);
+
+	return PTR_ERR_OR_ZERO(priv->psy);
+}
+
+static void mt6370_chg_destroy_attach_lock(void *data)
+{
+	struct mutex *attach_lock = data;
+
+	mutex_destroy(attach_lock);
+}
+
+static void mt6370_chg_destroy_wq(void *data)
+{
+	struct workqueue_struct *wq = data;
+
+	flush_workqueue(wq);
+	destroy_workqueue(wq);
+}
+
+static irqreturn_t mt6370_attach_i_handler(int irq, void *data)
+{
+	struct mt6370_priv *priv = data;
+	unsigned int otg_en;
+	int ret;
+
+	/* Check in OTG mode or not */
+	ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en);
+	if (ret) {
+		dev_err(priv->dev, "Failed to get OTG state\n");
+		return IRQ_NONE;
+	}
+
+	if (otg_en)
+		return IRQ_HANDLED;
+
+	mutex_lock(&priv->attach_lock);
+	priv->attach = MT6370_ATTACH_STAT_ATTACH_BC12_DONE;
+	mutex_unlock(&priv->attach_lock);
+
+	if (!queue_work(priv->wq, &priv->bc12_work))
+		dev_err(priv->dev, "bc12 work has already queued\n");
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t mt6370_uvp_d_evt_handler(int irq, void *data)
+{
+	struct mt6370_priv *priv = data;
+
+	mt6370_chg_pwr_rdy_check(priv);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t mt6370_mivr_handler(int irq, void *data)
+{
+	struct mt6370_priv *priv = data;
+
+	pm_stay_awake(priv->dev);
+	disable_irq_nosync(priv->irq_nums[MT6370_IRQ_MIVR]);
+	schedule_delayed_work(&priv->mivr_dwork, msecs_to_jiffies(200));
+
+	return IRQ_HANDLED;
+}
+
+#define MT6370_CHG_IRQ(_name)						\
+{									\
+	.name = #_name,							\
+	.handler = mt6370_##_name##_handler,				\
+}
+
+static int mt6370_chg_init_irq(struct mt6370_priv *priv)
+{
+	int i, ret;
+	const struct {
+		char *name;
+		irq_handler_t handler;
+	} mt6370_chg_irqs[] = {
+		MT6370_CHG_IRQ(attach_i),
+		MT6370_CHG_IRQ(uvp_d_evt),
+		MT6370_CHG_IRQ(mivr),
+	};
+
+	for (i = 0; i < ARRAY_SIZE(mt6370_chg_irqs); i++) {
+		ret = platform_get_irq_byname(to_platform_device(priv->dev),
+					      mt6370_chg_irqs[i].name);
+		if (ret < 0)
+			return dev_err_probe(priv->dev, ret,
+					     "Failed to get irq %s\n",
+					     mt6370_chg_irqs[i].name);
+
+		priv->irq_nums[i] = ret;
+		ret = devm_request_threaded_irq(priv->dev, ret, NULL,
+						mt6370_chg_irqs[i].handler,
+						IRQF_TRIGGER_FALLING,
+						dev_name(priv->dev), priv);
+		if (ret)
+			return dev_err_probe(priv->dev, ret,
+					     "Failed to request irq %s\n",
+					     mt6370_chg_irqs[i].name);
+	}
+
+	return 0;
+}
+
+static int mt6370_chg_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct mt6370_priv *priv;
+	int ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->dev = &pdev->dev;
+
+	priv->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!priv->regmap)
+		return dev_err_probe(dev, -ENODEV, "Failed to get regmap\n");
+
+	ret = mt6370_chg_init_rmap_fields(priv);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init regmap fields\n");
+
+	platform_set_drvdata(pdev, priv);
+
+	priv->iio_adcs = devm_iio_channel_get_all(priv->dev);
+	if (IS_ERR(priv->iio_adcs))
+		return dev_err_probe(dev, PTR_ERR(priv->iio_adcs),
+				     "Failed to get iio adc\n");
+
+	ret = mt6370_chg_init_otg_regulator(priv);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init OTG regulator\n");
+
+	ret = mt6370_chg_init_psy(priv);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init psy\n");
+
+	mutex_init(&priv->attach_lock);
+	ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_attach_lock,
+				       &priv->attach_lock);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init attach lock\n");
+
+	priv->attach = MT6370_ATTACH_STAT_DETACH;
+
+	priv->wq = create_singlethread_workqueue(dev_name(priv->dev));
+	if (!priv->wq)
+		return dev_err_probe(dev, -ENOMEM,
+				     "Failed to create workqueue\n");
+
+	ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_wq, priv->wq);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init wq\n");
+
+	ret = devm_work_autocancel(dev, &priv->bc12_work, mt6370_chg_bc12_work_func);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init bc12 work\n");
+
+	ret = devm_delayed_work_autocancel(dev, &priv->mivr_dwork, mt6370_chg_mivr_dwork_func);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init mivr delayed work\n");
+
+	ret = mt6370_chg_init_setting(priv);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to init mt6370 charger setting\n");
+
+	ret = mt6370_chg_init_irq(priv);
+	if (ret)
+		return ret;
+
+	mt6370_chg_pwr_rdy_check(priv);
+
+	return 0;
+}
+
+static const struct of_device_id mt6370_chg_of_match[] = {
+	{ .compatible = "mediatek,mt6370-charger", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, mt6370_chg_of_match);
+
+static struct platform_driver mt6370_chg_driver = {
+	.probe = mt6370_chg_probe,
+	.driver = {
+		.name = "mt6370-charger",
+		.of_match_table = mt6370_chg_of_match,
+	},
+};
+module_platform_driver(mt6370_chg_driver);
+
+MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@richtek.com>");
+MODULE_DESCRIPTION("MediaTek MT6370 Charger Driver");
+MODULE_LICENSE("GPL v2");