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, 519 insertions, 0 deletions

diff --git a/drivers/regulator/tps62360-regulator.c b/drivers/regulator/tps62360-regulator.c
new file mode 100644
index 000000000..da1b2b134
--- /dev/null
+++ b/drivers/regulator/tps62360-regulator.c
@@ -0,0 +1,519 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * tps62360.c -- TI tps62360
+ *
+ * Driver for processor core supply tps62360, tps62361B, tps62362 and tps62363.
+ *
+ * Copyright (c) 2012, NVIDIA Corporation.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/tps62360.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+
+/* Register definitions */
+#define REG_VSET0		0
+#define REG_VSET1		1
+#define REG_VSET2		2
+#define REG_VSET3		3
+#define REG_CONTROL		4
+#define REG_TEMP		5
+#define REG_RAMPCTRL		6
+#define REG_CHIPID		8
+
+#define FORCE_PWM_ENABLE	BIT(7)
+
+enum chips {TPS62360, TPS62361, TPS62362, TPS62363};
+
+#define TPS62360_BASE_VOLTAGE	770000
+#define TPS62360_N_VOLTAGES	64
+
+#define TPS62361_BASE_VOLTAGE	500000
+#define TPS62361_N_VOLTAGES	128
+
+/* tps 62360 chip information */
+struct tps62360_chip {
+	struct device *dev;
+	struct regulator_desc desc;
+	struct regulator_dev *rdev;
+	struct regmap *regmap;
+	struct gpio_desc *vsel0_gpio;
+	struct gpio_desc *vsel1_gpio;
+	u8 voltage_reg_mask;
+	bool en_internal_pulldn;
+	bool en_discharge;
+	bool valid_gpios;
+	int lru_index[4];
+	int curr_vset_vsel[4];
+	int curr_vset_id;
+};
+
+/*
+ * find_voltage_set_register: Find new voltage configuration register
+ * (VSET) id.
+ * The finding of the new VSET register will be based on the LRU mechanism.
+ * Each VSET register will have different voltage configured . This
+ * Function will look if any of the VSET register have requested voltage set
+ * or not.
+ *     - If it is already there then it will make that register as most
+ *       recently used and return as found so that caller need not to set
+ *       the VSET register but need to set the proper gpios to select this
+ *       VSET register.
+ *     - If requested voltage is not found then it will use the least
+ *       recently mechanism to get new VSET register for new configuration
+ *       and will return not_found so that caller need to set new VSET
+ *       register and then gpios (both).
+ */
+static bool find_voltage_set_register(struct tps62360_chip *tps,
+		int req_vsel, int *vset_reg_id)
+{
+	int i;
+	bool found = false;
+	int new_vset_reg = tps->lru_index[3];
+	int found_index = 3;
+
+	for (i = 0; i < 4; ++i) {
+		if (tps->curr_vset_vsel[tps->lru_index[i]] == req_vsel) {
+			new_vset_reg = tps->lru_index[i];
+			found_index = i;
+			found = true;
+			goto update_lru_index;
+		}
+	}
+
+update_lru_index:
+	for (i = found_index; i > 0; i--)
+		tps->lru_index[i] = tps->lru_index[i - 1];
+
+	tps->lru_index[0] = new_vset_reg;
+	*vset_reg_id = new_vset_reg;
+	return found;
+}
+
+static int tps62360_dcdc_get_voltage_sel(struct regulator_dev *dev)
+{
+	struct tps62360_chip *tps = rdev_get_drvdata(dev);
+	int vsel;
+	unsigned int data;
+	int ret;
+
+	ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data);
+	if (ret < 0) {
+		dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
+			__func__, REG_VSET0 + tps->curr_vset_id, ret);
+		return ret;
+	}
+	vsel = (int)data & tps->voltage_reg_mask;
+	return vsel;
+}
+
+static int tps62360_dcdc_set_voltage_sel(struct regulator_dev *dev,
+					 unsigned selector)
+{
+	struct tps62360_chip *tps = rdev_get_drvdata(dev);
+	int ret;
+	bool found = false;
+	int new_vset_id = tps->curr_vset_id;
+
+	/*
+	 * If gpios are available to select the VSET register then least
+	 * recently used register for new configuration.
+	 */
+	if (tps->valid_gpios)
+		found = find_voltage_set_register(tps, selector, &new_vset_id);
+
+	if (!found) {
+		ret = regmap_update_bits(tps->regmap, REG_VSET0 + new_vset_id,
+				tps->voltage_reg_mask, selector);
+		if (ret < 0) {
+			dev_err(tps->dev,
+				"%s(): register %d update failed with err %d\n",
+				 __func__, REG_VSET0 + new_vset_id, ret);
+			return ret;
+		}
+		tps->curr_vset_id = new_vset_id;
+		tps->curr_vset_vsel[new_vset_id] = selector;
+	}
+
+	/* Select proper VSET register vio gpios */
+	if (tps->valid_gpios) {
+		gpiod_set_value_cansleep(tps->vsel0_gpio, new_vset_id & 0x1);
+		gpiod_set_value_cansleep(tps->vsel1_gpio,
+					(new_vset_id >> 1) & 0x1);
+	}
+	return 0;
+}
+
+static int tps62360_set_mode(struct regulator_dev *rdev, unsigned int mode)
+{
+	struct tps62360_chip *tps = rdev_get_drvdata(rdev);
+	int i;
+	int val;
+	int ret;
+
+	/* Enable force PWM mode in FAST mode only. */
+	switch (mode) {
+	case REGULATOR_MODE_FAST:
+		val = FORCE_PWM_ENABLE;
+		break;
+
+	case REGULATOR_MODE_NORMAL:
+		val = 0;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	if (!tps->valid_gpios) {
+		ret = regmap_update_bits(tps->regmap,
+			REG_VSET0 + tps->curr_vset_id, FORCE_PWM_ENABLE, val);
+		if (ret < 0)
+			dev_err(tps->dev,
+				"%s(): register %d update failed with err %d\n",
+				__func__, REG_VSET0 + tps->curr_vset_id, ret);
+		return ret;
+	}
+
+	/* If gpios are valid then all register set need to be control */
+	for (i = 0; i < 4; ++i) {
+		ret = regmap_update_bits(tps->regmap,
+					REG_VSET0 + i, FORCE_PWM_ENABLE, val);
+		if (ret < 0) {
+			dev_err(tps->dev,
+				"%s(): register %d update failed with err %d\n",
+				__func__, REG_VSET0 + i, ret);
+			return ret;
+		}
+	}
+	return ret;
+}
+
+static unsigned int tps62360_get_mode(struct regulator_dev *rdev)
+{
+	struct tps62360_chip *tps = rdev_get_drvdata(rdev);
+	unsigned int data;
+	int ret;
+
+	ret = regmap_read(tps->regmap, REG_VSET0 + tps->curr_vset_id, &data);
+	if (ret < 0) {
+		dev_err(tps->dev, "%s(): register %d read failed with err %d\n",
+			__func__, REG_VSET0 + tps->curr_vset_id, ret);
+		return ret;
+	}
+	return (data & FORCE_PWM_ENABLE) ?
+				REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
+}
+
+static const struct regulator_ops tps62360_dcdc_ops = {
+	.get_voltage_sel	= tps62360_dcdc_get_voltage_sel,
+	.set_voltage_sel	= tps62360_dcdc_set_voltage_sel,
+	.list_voltage		= regulator_list_voltage_linear,
+	.map_voltage		= regulator_map_voltage_linear,
+	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
+	.set_mode		= tps62360_set_mode,
+	.get_mode		= tps62360_get_mode,
+};
+
+static int tps62360_init_dcdc(struct tps62360_chip *tps,
+		struct tps62360_regulator_platform_data *pdata)
+{
+	int ret;
+	unsigned int ramp_ctrl;
+
+	/* Initialize internal pull up/down control */
+	if (tps->en_internal_pulldn)
+		ret = regmap_write(tps->regmap, REG_CONTROL, 0xE0);
+	else
+		ret = regmap_write(tps->regmap, REG_CONTROL, 0x0);
+	if (ret < 0) {
+		dev_err(tps->dev,
+			"%s(): register %d write failed with err %d\n",
+			__func__, REG_CONTROL, ret);
+		return ret;
+	}
+
+	/* Reset output discharge path to reduce power consumption */
+	ret = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), 0);
+	if (ret < 0) {
+		dev_err(tps->dev,
+			"%s(): register %d update failed with err %d\n",
+			__func__, REG_RAMPCTRL, ret);
+		return ret;
+	}
+
+	/* Get ramp value from ramp control register */
+	ret = regmap_read(tps->regmap, REG_RAMPCTRL, &ramp_ctrl);
+	if (ret < 0) {
+		dev_err(tps->dev,
+			"%s(): register %d read failed with err %d\n",
+			__func__, REG_RAMPCTRL, ret);
+		return ret;
+	}
+	ramp_ctrl = (ramp_ctrl >> 5) & 0x7;
+
+	/* ramp mV/us = 32/(2^ramp_ctrl) */
+	tps->desc.ramp_delay = DIV_ROUND_UP(32000, BIT(ramp_ctrl));
+	return ret;
+}
+
+static const struct regmap_config tps62360_regmap_config = {
+	.reg_bits		= 8,
+	.val_bits		= 8,
+	.max_register		= REG_CHIPID,
+	.cache_type		= REGCACHE_RBTREE,
+};
+
+static struct tps62360_regulator_platform_data *
+	of_get_tps62360_platform_data(struct device *dev,
+				      const struct regulator_desc *desc)
+{
+	struct tps62360_regulator_platform_data *pdata;
+	struct device_node *np = dev->of_node;
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return NULL;
+
+	pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node,
+							  desc);
+	if (!pdata->reg_init_data) {
+		dev_err(dev, "Not able to get OF regulator init data\n");
+		return NULL;
+	}
+
+	if (of_find_property(np, "ti,vsel0-state-high", NULL))
+		pdata->vsel0_def_state = 1;
+
+	if (of_find_property(np, "ti,vsel1-state-high", NULL))
+		pdata->vsel1_def_state = 1;
+
+	if (of_find_property(np, "ti,enable-pull-down", NULL))
+		pdata->en_internal_pulldn = true;
+
+	if (of_find_property(np, "ti,enable-vout-discharge", NULL))
+		pdata->en_discharge = true;
+
+	return pdata;
+}
+
+#if defined(CONFIG_OF)
+static const struct of_device_id tps62360_of_match[] = {
+	 { .compatible = "ti,tps62360", .data = (void *)TPS62360},
+	 { .compatible = "ti,tps62361", .data = (void *)TPS62361},
+	 { .compatible = "ti,tps62362", .data = (void *)TPS62362},
+	 { .compatible = "ti,tps62363", .data = (void *)TPS62363},
+	{},
+};
+MODULE_DEVICE_TABLE(of, tps62360_of_match);
+#endif
+
+static int tps62360_probe(struct i2c_client *client)
+{
+	const struct i2c_device_id *id = i2c_client_get_device_id(client);
+	struct regulator_config config = { };
+	struct tps62360_regulator_platform_data *pdata;
+	struct regulator_dev *rdev;
+	struct tps62360_chip *tps;
+	int ret;
+	int i;
+	int chip_id;
+	int gpio_flags;
+
+	pdata = dev_get_platdata(&client->dev);
+
+	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+	if (!tps)
+		return -ENOMEM;
+
+	tps->desc.name = client->name;
+	tps->desc.id = 0;
+	tps->desc.ops = &tps62360_dcdc_ops;
+	tps->desc.type = REGULATOR_VOLTAGE;
+	tps->desc.owner = THIS_MODULE;
+	tps->desc.uV_step = 10000;
+
+	if (client->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_device(of_match_ptr(tps62360_of_match),
+				&client->dev);
+		if (!match) {
+			dev_err(&client->dev, "Error: No device match found\n");
+			return -ENODEV;
+		}
+		chip_id = (int)(long)match->data;
+		if (!pdata)
+			pdata = of_get_tps62360_platform_data(&client->dev,
+							      &tps->desc);
+	} else if (id) {
+		chip_id = id->driver_data;
+	} else {
+		dev_err(&client->dev, "No device tree match or id table match found\n");
+		return -ENODEV;
+	}
+
+	if (!pdata) {
+		dev_err(&client->dev, "%s(): Platform data not found\n",
+						__func__);
+		return -EIO;
+	}
+
+	tps->en_discharge = pdata->en_discharge;
+	tps->en_internal_pulldn = pdata->en_internal_pulldn;
+	tps->dev = &client->dev;
+
+	switch (chip_id) {
+	case TPS62360:
+	case TPS62362:
+		tps->desc.min_uV = TPS62360_BASE_VOLTAGE;
+		tps->voltage_reg_mask = 0x3F;
+		tps->desc.n_voltages = TPS62360_N_VOLTAGES;
+		break;
+	case TPS62361:
+	case TPS62363:
+		tps->desc.min_uV = TPS62361_BASE_VOLTAGE;
+		tps->voltage_reg_mask = 0x7F;
+		tps->desc.n_voltages = TPS62361_N_VOLTAGES;
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	tps->regmap = devm_regmap_init_i2c(client, &tps62360_regmap_config);
+	if (IS_ERR(tps->regmap)) {
+		ret = PTR_ERR(tps->regmap);
+		dev_err(&client->dev,
+			"%s(): regmap allocation failed with err %d\n",
+			__func__, ret);
+		return ret;
+	}
+	i2c_set_clientdata(client, tps);
+
+	tps->curr_vset_id = (pdata->vsel1_def_state & 1) * 2 +
+				(pdata->vsel0_def_state & 1);
+	tps->lru_index[0] = tps->curr_vset_id;
+	tps->valid_gpios = false;
+
+	gpio_flags = (pdata->vsel0_def_state) ?
+			GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
+	tps->vsel0_gpio = devm_gpiod_get_optional(&client->dev, "vsel0", gpio_flags);
+	if (IS_ERR(tps->vsel0_gpio)) {
+		dev_err(&client->dev,
+			"%s(): Could not obtain vsel0 GPIO: %ld\n",
+			__func__, PTR_ERR(tps->vsel0_gpio));
+		return PTR_ERR(tps->vsel0_gpio);
+	}
+
+	gpio_flags = (pdata->vsel1_def_state) ?
+			GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
+	tps->vsel1_gpio = devm_gpiod_get_optional(&client->dev, "vsel1", gpio_flags);
+	if (IS_ERR(tps->vsel1_gpio)) {
+		dev_err(&client->dev,
+			"%s(): Could not obtain vsel1 GPIO: %ld\n",
+			__func__, PTR_ERR(tps->vsel1_gpio));
+		return PTR_ERR(tps->vsel1_gpio);
+	}
+
+	if (tps->vsel0_gpio != NULL && tps->vsel1_gpio != NULL) {
+		tps->valid_gpios = true;
+
+		/*
+		 * Initialize the lru index with vset_reg id
+		 * The index 0 will be most recently used and
+		 * set with the tps->curr_vset_id */
+		for (i = 0; i < 4; ++i)
+			tps->lru_index[i] = i;
+		tps->lru_index[0] = tps->curr_vset_id;
+		tps->lru_index[tps->curr_vset_id] = 0;
+	}
+
+	ret = tps62360_init_dcdc(tps, pdata);
+	if (ret < 0) {
+		dev_err(tps->dev, "%s(): Init failed with err = %d\n",
+				__func__, ret);
+		return ret;
+	}
+
+	config.dev = &client->dev;
+	config.init_data = pdata->reg_init_data;
+	config.driver_data = tps;
+	config.of_node = client->dev.of_node;
+
+	/* Register the regulators */
+	rdev = devm_regulator_register(&client->dev, &tps->desc, &config);
+	if (IS_ERR(rdev)) {
+		dev_err(tps->dev,
+			"%s(): regulator register failed with err %s\n",
+			__func__, id->name);
+		return PTR_ERR(rdev);
+	}
+
+	tps->rdev = rdev;
+	return 0;
+}
+
+static void tps62360_shutdown(struct i2c_client *client)
+{
+	struct tps62360_chip *tps = i2c_get_clientdata(client);
+	int st;
+
+	if (!tps->en_discharge)
+		return;
+
+	/* Configure the output discharge path */
+	st = regmap_update_bits(tps->regmap, REG_RAMPCTRL, BIT(2), BIT(2));
+	if (st < 0)
+		dev_err(tps->dev,
+			"%s(): register %d update failed with err %d\n",
+			__func__, REG_RAMPCTRL, st);
+}
+
+static const struct i2c_device_id tps62360_id[] = {
+	{.name = "tps62360", .driver_data = TPS62360},
+	{.name = "tps62361", .driver_data = TPS62361},
+	{.name = "tps62362", .driver_data = TPS62362},
+	{.name = "tps62363", .driver_data = TPS62363},
+	{},
+};
+
+MODULE_DEVICE_TABLE(i2c, tps62360_id);
+
+static struct i2c_driver tps62360_i2c_driver = {
+	.driver = {
+		.name = "tps62360",
+		.of_match_table = of_match_ptr(tps62360_of_match),
+	},
+	.probe_new = tps62360_probe,
+	.shutdown = tps62360_shutdown,
+	.id_table = tps62360_id,
+};
+
+static int __init tps62360_init(void)
+{
+	return i2c_add_driver(&tps62360_i2c_driver);
+}
+subsys_initcall(tps62360_init);
+
+static void __exit tps62360_cleanup(void)
+{
+	i2c_del_driver(&tps62360_i2c_driver);
+}
+module_exit(tps62360_cleanup);
+
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_DESCRIPTION("TPS6236x voltage regulator driver");
+MODULE_LICENSE("GPL v2");