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, 1299 insertions, 0 deletions

diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
new file mode 100644
index 000000000..a1c9a1530
--- /dev/null
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
@@ -0,0 +1,1299 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * TI Bandgap temperature sensor driver
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: J Keerthy <j-keerthy@ti.com>
+ * Author: Moiz Sonasath <m-sonasath@ti.com>
+ * Couple of fixes, DT and MFD adaptation:
+ *   Eduardo Valentin <eduardo.valentin@ti.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/cpu_pm.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/gpio/consumer.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/reboot.h>
+#include <linux/spinlock.h>
+#include <linux/sys_soc.h>
+#include <linux/types.h>
+
+#include "ti-bandgap.h"
+
+static int ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id);
+#ifdef CONFIG_PM_SLEEP
+static int bandgap_omap_cpu_notifier(struct notifier_block *nb,
+				  unsigned long cmd, void *v);
+#endif
+
+/***   Helper functions to access registers and their bitfields   ***/
+
+/**
+ * ti_bandgap_readl() - simple read helper function
+ * @bgp: pointer to ti_bandgap structure
+ * @reg: desired register (offset) to be read
+ *
+ * Helper function to read bandgap registers. It uses the io remapped area.
+ * Return: the register value.
+ */
+static u32 ti_bandgap_readl(struct ti_bandgap *bgp, u32 reg)
+{
+	return readl(bgp->base + reg);
+}
+
+/**
+ * ti_bandgap_writel() - simple write helper function
+ * @bgp: pointer to ti_bandgap structure
+ * @val: desired register value to be written
+ * @reg: desired register (offset) to be written
+ *
+ * Helper function to write bandgap registers. It uses the io remapped area.
+ */
+static void ti_bandgap_writel(struct ti_bandgap *bgp, u32 val, u32 reg)
+{
+	writel(val, bgp->base + reg);
+}
+
+/**
+ * DOC: macro to update bits.
+ *
+ * RMW_BITS() - used to read, modify and update bandgap bitfields.
+ *            The value passed will be shifted.
+ */
+#define RMW_BITS(bgp, id, reg, mask, val)			\
+do {								\
+	struct temp_sensor_registers *t;			\
+	u32 r;							\
+								\
+	t = bgp->conf->sensors[(id)].registers;		\
+	r = ti_bandgap_readl(bgp, t->reg);			\
+	r &= ~t->mask;						\
+	r |= (val) << __ffs(t->mask);				\
+	ti_bandgap_writel(bgp, r, t->reg);			\
+} while (0)
+
+/***   Basic helper functions   ***/
+
+/**
+ * ti_bandgap_power() - controls the power state of a bandgap device
+ * @bgp: pointer to ti_bandgap structure
+ * @on: desired power state (1 - on, 0 - off)
+ *
+ * Used to power on/off a bandgap device instance. Only used on those
+ * that features tempsoff bit.
+ *
+ * Return: 0 on success, -ENOTSUPP if tempsoff is not supported.
+ */
+static int ti_bandgap_power(struct ti_bandgap *bgp, bool on)
+{
+	int i;
+
+	if (!TI_BANDGAP_HAS(bgp, POWER_SWITCH))
+		return -ENOTSUPP;
+
+	for (i = 0; i < bgp->conf->sensor_count; i++)
+		/* active on 0 */
+		RMW_BITS(bgp, i, temp_sensor_ctrl, bgap_tempsoff_mask, !on);
+	return 0;
+}
+
+/**
+ * ti_errata814_bandgap_read_temp() - helper function to read dra7 sensor temperature
+ * @bgp: pointer to ti_bandgap structure
+ * @reg: desired register (offset) to be read
+ *
+ * Function to read dra7 bandgap sensor temperature. This is done separately
+ * so as to workaround the errata "Bandgap Temperature read Dtemp can be
+ * corrupted" - Errata ID: i814".
+ * Read accesses to registers listed below can be corrupted due to incorrect
+ * resynchronization between clock domains.
+ * Read access to registers below can be corrupted :
+ * CTRL_CORE_DTEMP_MPU/GPU/CORE/DSPEVE/IVA_n (n = 0 to 4)
+ * CTRL_CORE_TEMP_SENSOR_MPU/GPU/CORE/DSPEVE/IVA_n
+ *
+ * Return: the register value.
+ */
+static u32 ti_errata814_bandgap_read_temp(struct ti_bandgap *bgp,  u32 reg)
+{
+	u32 val1, val2;
+
+	val1 = ti_bandgap_readl(bgp, reg);
+	val2 = ti_bandgap_readl(bgp, reg);
+
+	/* If both times we read the same value then that is right */
+	if (val1 == val2)
+		return val1;
+
+	/* if val1 and val2 are different read it third time */
+	return ti_bandgap_readl(bgp, reg);
+}
+
+/**
+ * ti_bandgap_read_temp() - helper function to read sensor temperature
+ * @bgp: pointer to ti_bandgap structure
+ * @id: bandgap sensor id
+ *
+ * Function to concentrate the steps to read sensor temperature register.
+ * This function is desired because, depending on bandgap device version,
+ * it might be needed to freeze the bandgap state machine, before fetching
+ * the register value.
+ *
+ * Return: temperature in ADC values.
+ */
+static u32 ti_bandgap_read_temp(struct ti_bandgap *bgp, int id)
+{
+	struct temp_sensor_registers *tsr;
+	u32 temp, reg;
+
+	tsr = bgp->conf->sensors[id].registers;
+	reg = tsr->temp_sensor_ctrl;
+
+	if (TI_BANDGAP_HAS(bgp, FREEZE_BIT)) {
+		RMW_BITS(bgp, id, bgap_mask_ctrl, mask_freeze_mask, 1);
+		/*
+		 * In case we cannot read from cur_dtemp / dtemp_0,
+		 * then we read from the last valid temp read
+		 */
+		reg = tsr->ctrl_dtemp_1;
+	}
+
+	/* read temperature */
+	if (TI_BANDGAP_HAS(bgp, ERRATA_814))
+		temp = ti_errata814_bandgap_read_temp(bgp, reg);
+	else
+		temp = ti_bandgap_readl(bgp, reg);
+
+	temp &= tsr->bgap_dtemp_mask;
+
+	if (TI_BANDGAP_HAS(bgp, FREEZE_BIT))
+		RMW_BITS(bgp, id, bgap_mask_ctrl, mask_freeze_mask, 0);
+
+	return temp;
+}
+
+/***   IRQ handlers   ***/
+
+/**
+ * ti_bandgap_talert_irq_handler() - handles Temperature alert IRQs
+ * @irq: IRQ number
+ * @data: private data (struct ti_bandgap *)
+ *
+ * This is the Talert handler. Use it only if bandgap device features
+ * HAS(TALERT). This handler goes over all sensors and checks their
+ * conditions and acts accordingly. In case there are events pending,
+ * it will reset the event mask to wait for the opposite event (next event).
+ * Every time there is a new event, it will be reported to thermal layer.
+ *
+ * Return: IRQ_HANDLED
+ */
+static irqreturn_t ti_bandgap_talert_irq_handler(int irq, void *data)
+{
+	struct ti_bandgap *bgp = data;
+	struct temp_sensor_registers *tsr;
+	u32 t_hot = 0, t_cold = 0, ctrl;
+	int i;
+
+	spin_lock(&bgp->lock);
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		tsr = bgp->conf->sensors[i].registers;
+		ctrl = ti_bandgap_readl(bgp, tsr->bgap_status);
+
+		/* Read the status of t_hot */
+		t_hot = ctrl & tsr->status_hot_mask;
+
+		/* Read the status of t_cold */
+		t_cold = ctrl & tsr->status_cold_mask;
+
+		if (!t_cold && !t_hot)
+			continue;
+
+		ctrl = ti_bandgap_readl(bgp, tsr->bgap_mask_ctrl);
+		/*
+		 * One TALERT interrupt: Two sources
+		 * If the interrupt is due to t_hot then mask t_hot and
+		 * unmask t_cold else mask t_cold and unmask t_hot
+		 */
+		if (t_hot) {
+			ctrl &= ~tsr->mask_hot_mask;
+			ctrl |= tsr->mask_cold_mask;
+		} else if (t_cold) {
+			ctrl &= ~tsr->mask_cold_mask;
+			ctrl |= tsr->mask_hot_mask;
+		}
+
+		ti_bandgap_writel(bgp, ctrl, tsr->bgap_mask_ctrl);
+
+		dev_dbg(bgp->dev,
+			"%s: IRQ from %s sensor: hotevent %d coldevent %d\n",
+			__func__, bgp->conf->sensors[i].domain,
+			t_hot, t_cold);
+
+		/* report temperature to whom may concern */
+		if (bgp->conf->report_temperature)
+			bgp->conf->report_temperature(bgp, i);
+	}
+	spin_unlock(&bgp->lock);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * ti_bandgap_tshut_irq_handler() - handles Temperature shutdown signal
+ * @irq: IRQ number
+ * @data: private data (unused)
+ *
+ * This is the Tshut handler. Use it only if bandgap device features
+ * HAS(TSHUT). If any sensor fires the Tshut signal, we simply shutdown
+ * the system.
+ *
+ * Return: IRQ_HANDLED
+ */
+static irqreturn_t ti_bandgap_tshut_irq_handler(int irq, void *data)
+{
+	pr_emerg("%s: TSHUT temperature reached. Needs shut down...\n",
+		 __func__);
+
+	orderly_poweroff(true);
+
+	return IRQ_HANDLED;
+}
+
+/***   Helper functions which manipulate conversion ADC <-> mi Celsius   ***/
+
+/**
+ * ti_bandgap_adc_to_mcelsius() - converts an ADC value to mCelsius scale
+ * @bgp: struct ti_bandgap pointer
+ * @adc_val: value in ADC representation
+ * @t: address where to write the resulting temperature in mCelsius
+ *
+ * Simple conversion from ADC representation to mCelsius. In case the ADC value
+ * is out of the ADC conv table range, it returns -ERANGE, 0 on success.
+ * The conversion table is indexed by the ADC values.
+ *
+ * Return: 0 if conversion was successful, else -ERANGE in case the @adc_val
+ * argument is out of the ADC conv table range.
+ */
+static
+int ti_bandgap_adc_to_mcelsius(struct ti_bandgap *bgp, int adc_val, int *t)
+{
+	const struct ti_bandgap_data *conf = bgp->conf;
+
+	/* look up for temperature in the table and return the temperature */
+	if (adc_val < conf->adc_start_val || adc_val > conf->adc_end_val)
+		return -ERANGE;
+
+	*t = bgp->conf->conv_table[adc_val - conf->adc_start_val];
+	return 0;
+}
+
+/**
+ * ti_bandgap_validate() - helper to check the sanity of a struct ti_bandgap
+ * @bgp: struct ti_bandgap pointer
+ * @id: bandgap sensor id
+ *
+ * Checks if the bandgap pointer is valid and if the sensor id is also
+ * applicable.
+ *
+ * Return: 0 if no errors, -EINVAL for invalid @bgp pointer or -ERANGE if
+ * @id cannot index @bgp sensors.
+ */
+static inline int ti_bandgap_validate(struct ti_bandgap *bgp, int id)
+{
+	if (!bgp || IS_ERR(bgp)) {
+		pr_err("%s: invalid bandgap pointer\n", __func__);
+		return -EINVAL;
+	}
+
+	if ((id < 0) || (id >= bgp->conf->sensor_count)) {
+		dev_err(bgp->dev, "%s: sensor id out of range (%d)\n",
+			__func__, id);
+		return -ERANGE;
+	}
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_read_counter() - read the sensor counter
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: resulting update interval in miliseconds
+ */
+static void ti_bandgap_read_counter(struct ti_bandgap *bgp, int id,
+				    int *interval)
+{
+	struct temp_sensor_registers *tsr;
+	int time;
+
+	tsr = bgp->conf->sensors[id].registers;
+	time = ti_bandgap_readl(bgp, tsr->bgap_counter);
+	time = (time & tsr->counter_mask) >>
+					__ffs(tsr->counter_mask);
+	time = time * 1000 / bgp->clk_rate;
+	*interval = time;
+}
+
+/**
+ * ti_bandgap_read_counter_delay() - read the sensor counter delay
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: resulting update interval in miliseconds
+ */
+static void ti_bandgap_read_counter_delay(struct ti_bandgap *bgp, int id,
+					  int *interval)
+{
+	struct temp_sensor_registers *tsr;
+	int reg_val;
+
+	tsr = bgp->conf->sensors[id].registers;
+
+	reg_val = ti_bandgap_readl(bgp, tsr->bgap_mask_ctrl);
+	reg_val = (reg_val & tsr->mask_counter_delay_mask) >>
+				__ffs(tsr->mask_counter_delay_mask);
+	switch (reg_val) {
+	case 0:
+		*interval = 0;
+		break;
+	case 1:
+		*interval = 1;
+		break;
+	case 2:
+		*interval = 10;
+		break;
+	case 3:
+		*interval = 100;
+		break;
+	case 4:
+		*interval = 250;
+		break;
+	case 5:
+		*interval = 500;
+		break;
+	default:
+		dev_warn(bgp->dev, "Wrong counter delay value read from register %X",
+			 reg_val);
+	}
+}
+
+/**
+ * ti_bandgap_read_update_interval() - read the sensor update interval
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: resulting update interval in miliseconds
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_read_update_interval(struct ti_bandgap *bgp, int id,
+				    int *interval)
+{
+	int ret = 0;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, COUNTER) &&
+	    !TI_BANDGAP_HAS(bgp, COUNTER_DELAY)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	if (TI_BANDGAP_HAS(bgp, COUNTER)) {
+		ti_bandgap_read_counter(bgp, id, interval);
+		goto exit;
+	}
+
+	ti_bandgap_read_counter_delay(bgp, id, interval);
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_write_counter_delay() - set the counter_delay
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: desired update interval in miliseconds
+ *
+ * Return: 0 on success or the proper error code
+ */
+static int ti_bandgap_write_counter_delay(struct ti_bandgap *bgp, int id,
+					  u32 interval)
+{
+	int rval;
+
+	switch (interval) {
+	case 0: /* Immediate conversion */
+		rval = 0x0;
+		break;
+	case 1: /* Conversion after ever 1ms */
+		rval = 0x1;
+		break;
+	case 10: /* Conversion after ever 10ms */
+		rval = 0x2;
+		break;
+	case 100: /* Conversion after ever 100ms */
+		rval = 0x3;
+		break;
+	case 250: /* Conversion after ever 250ms */
+		rval = 0x4;
+		break;
+	case 500: /* Conversion after ever 500ms */
+		rval = 0x5;
+		break;
+	default:
+		dev_warn(bgp->dev, "Delay %d ms is not supported\n", interval);
+		return -EINVAL;
+	}
+
+	spin_lock(&bgp->lock);
+	RMW_BITS(bgp, id, bgap_mask_ctrl, mask_counter_delay_mask, rval);
+	spin_unlock(&bgp->lock);
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_write_counter() - set the bandgap sensor counter
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: desired update interval in miliseconds
+ */
+static void ti_bandgap_write_counter(struct ti_bandgap *bgp, int id,
+				     u32 interval)
+{
+	interval = interval * bgp->clk_rate / 1000;
+	spin_lock(&bgp->lock);
+	RMW_BITS(bgp, id, bgap_counter, counter_mask, interval);
+	spin_unlock(&bgp->lock);
+}
+
+/**
+ * ti_bandgap_write_update_interval() - set the update interval
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @interval: desired update interval in miliseconds
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_write_update_interval(struct ti_bandgap *bgp,
+				     int id, u32 interval)
+{
+	int ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, COUNTER) &&
+	    !TI_BANDGAP_HAS(bgp, COUNTER_DELAY)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	if (TI_BANDGAP_HAS(bgp, COUNTER)) {
+		ti_bandgap_write_counter(bgp, id, interval);
+		goto exit;
+	}
+
+	ret = ti_bandgap_write_counter_delay(bgp, id, interval);
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_read_temperature() - report current temperature
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @temperature: resulting temperature
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_read_temperature(struct ti_bandgap *bgp, int id,
+				int *temperature)
+{
+	u32 temp;
+	int ret;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		return ret;
+
+	if (!TI_BANDGAP_HAS(bgp, MODE_CONFIG)) {
+		ret = ti_bandgap_force_single_read(bgp, id);
+		if (ret)
+			return ret;
+	}
+
+	spin_lock(&bgp->lock);
+	temp = ti_bandgap_read_temp(bgp, id);
+	spin_unlock(&bgp->lock);
+
+	ret = ti_bandgap_adc_to_mcelsius(bgp, temp, &temp);
+	if (ret)
+		return -EIO;
+
+	*temperature = temp;
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_set_sensor_data() - helper function to store thermal
+ * framework related data.
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ * @data: thermal framework related data to be stored
+ *
+ * Return: 0 on success or the proper error code
+ */
+int ti_bandgap_set_sensor_data(struct ti_bandgap *bgp, int id, void *data)
+{
+	int ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		return ret;
+
+	bgp->regval[id].data = data;
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_get_sensor_data() - helper function to get thermal
+ * framework related data.
+ * @bgp: pointer to bandgap instance
+ * @id: sensor id
+ *
+ * Return: data stored by set function with sensor id on success or NULL
+ */
+void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id)
+{
+	int ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return bgp->regval[id].data;
+}
+
+/***   Helper functions used during device initialization   ***/
+
+/**
+ * ti_bandgap_force_single_read() - executes 1 single ADC conversion
+ * @bgp: pointer to struct ti_bandgap
+ * @id: sensor id which it is desired to read 1 temperature
+ *
+ * Used to initialize the conversion state machine and set it to a valid
+ * state. Called during device initialization and context restore events.
+ *
+ * Return: 0
+ */
+static int
+ti_bandgap_force_single_read(struct ti_bandgap *bgp, int id)
+{
+	struct temp_sensor_registers *tsr = bgp->conf->sensors[id].registers;
+	void __iomem *temp_sensor_ctrl = bgp->base + tsr->temp_sensor_ctrl;
+	int error;
+	u32 val;
+
+	/* Select continuous or single conversion mode */
+	if (TI_BANDGAP_HAS(bgp, MODE_CONFIG)) {
+		if (TI_BANDGAP_HAS(bgp, CONT_MODE_ONLY))
+			RMW_BITS(bgp, id, bgap_mode_ctrl, mode_ctrl_mask, 1);
+		else
+			RMW_BITS(bgp, id, bgap_mode_ctrl, mode_ctrl_mask, 0);
+	}
+
+	/* Set Start of Conversion if available */
+	if (tsr->bgap_soc_mask) {
+		RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 1);
+
+		/* Wait for EOCZ going up */
+		error = readl_poll_timeout_atomic(temp_sensor_ctrl, val,
+						  val & tsr->bgap_eocz_mask,
+						  1, 1000);
+		if (error)
+			dev_warn(bgp->dev, "eocz timed out waiting high\n");
+
+		/* Clear Start of Conversion if available */
+		RMW_BITS(bgp, id, temp_sensor_ctrl, bgap_soc_mask, 0);
+	}
+
+	/* Wait for EOCZ going down, always needed even if no bgap_soc_mask */
+	error = readl_poll_timeout_atomic(temp_sensor_ctrl, val,
+					  !(val & tsr->bgap_eocz_mask),
+					  1, 1500);
+	if (error)
+		dev_warn(bgp->dev, "eocz timed out waiting low\n");
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_set_continuous_mode() - One time enabling of continuous mode
+ * @bgp: pointer to struct ti_bandgap
+ *
+ * Call this function only if HAS(MODE_CONFIG) is set. As this driver may
+ * be used for junction temperature monitoring, it is desirable that the
+ * sensors are operational all the time, so that alerts are generated
+ * properly.
+ *
+ * Return: 0
+ */
+static int ti_bandgap_set_continuous_mode(struct ti_bandgap *bgp)
+{
+	int i;
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		/* Perform a single read just before enabling continuous */
+		ti_bandgap_force_single_read(bgp, i);
+		RMW_BITS(bgp, i, bgap_mode_ctrl, mode_ctrl_mask, 1);
+	}
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_get_trend() - To fetch the temperature trend of a sensor
+ * @bgp: pointer to struct ti_bandgap
+ * @id: id of the individual sensor
+ * @trend: Pointer to trend.
+ *
+ * This function needs to be called to fetch the temperature trend of a
+ * Particular sensor. The function computes the difference in temperature
+ * w.r.t time. For the bandgaps with built in history buffer the temperatures
+ * are read from the buffer and for those without the Buffer -ENOTSUPP is
+ * returned.
+ *
+ * Return: 0 if no error, else return corresponding error. If no
+ *		error then the trend value is passed on to trend parameter
+ */
+int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend)
+{
+	struct temp_sensor_registers *tsr;
+	u32 temp1, temp2, reg1, reg2;
+	int t1, t2, interval, ret = 0;
+
+	ret = ti_bandgap_validate(bgp, id);
+	if (ret)
+		goto exit;
+
+	if (!TI_BANDGAP_HAS(bgp, HISTORY_BUFFER) ||
+	    !TI_BANDGAP_HAS(bgp, FREEZE_BIT)) {
+		ret = -ENOTSUPP;
+		goto exit;
+	}
+
+	spin_lock(&bgp->lock);
+
+	tsr = bgp->conf->sensors[id].registers;
+
+	/* Freeze and read the last 2 valid readings */
+	RMW_BITS(bgp, id, bgap_mask_ctrl, mask_freeze_mask, 1);
+	reg1 = tsr->ctrl_dtemp_1;
+	reg2 = tsr->ctrl_dtemp_2;
+
+	/* read temperature from history buffer */
+	temp1 = ti_bandgap_readl(bgp, reg1);
+	temp1 &= tsr->bgap_dtemp_mask;
+
+	temp2 = ti_bandgap_readl(bgp, reg2);
+	temp2 &= tsr->bgap_dtemp_mask;
+
+	/* Convert from adc values to mCelsius temperature */
+	ret = ti_bandgap_adc_to_mcelsius(bgp, temp1, &t1);
+	if (ret)
+		goto unfreeze;
+
+	ret = ti_bandgap_adc_to_mcelsius(bgp, temp2, &t2);
+	if (ret)
+		goto unfreeze;
+
+	/* Fetch the update interval */
+	ret = ti_bandgap_read_update_interval(bgp, id, &interval);
+	if (ret)
+		goto unfreeze;
+
+	/* Set the interval to 1 ms if bandgap counter delay is not set */
+	if (interval == 0)
+		interval = 1;
+
+	*trend = (t1 - t2) / interval;
+
+	dev_dbg(bgp->dev, "The temperatures are t1 = %d and t2 = %d and trend =%d\n",
+		t1, t2, *trend);
+
+unfreeze:
+	RMW_BITS(bgp, id, bgap_mask_ctrl, mask_freeze_mask, 0);
+	spin_unlock(&bgp->lock);
+exit:
+	return ret;
+}
+
+/**
+ * ti_bandgap_tshut_init() - setup and initialize tshut handling
+ * @bgp: pointer to struct ti_bandgap
+ * @pdev: pointer to device struct platform_device
+ *
+ * Call this function only in case the bandgap features HAS(TSHUT).
+ * In this case, the driver needs to handle the TSHUT signal as an IRQ.
+ * The IRQ is wired as a GPIO, and for this purpose, it is required
+ * to specify which GPIO line is used. TSHUT IRQ is fired anytime
+ * one of the bandgap sensors violates the TSHUT high/hot threshold.
+ * And in that case, the system must go off.
+ *
+ * Return: 0 if no error, else error status
+ */
+static int ti_bandgap_tshut_init(struct ti_bandgap *bgp,
+				 struct platform_device *pdev)
+{
+	int status;
+
+	status = request_irq(gpiod_to_irq(bgp->tshut_gpiod),
+			     ti_bandgap_tshut_irq_handler,
+			     IRQF_TRIGGER_RISING, "tshut", NULL);
+	if (status)
+		dev_err(bgp->dev, "request irq failed for TSHUT");
+
+	return 0;
+}
+
+/**
+ * ti_bandgap_talert_init() - setup and initialize talert handling
+ * @bgp: pointer to struct ti_bandgap
+ * @pdev: pointer to device struct platform_device
+ *
+ * Call this function only in case the bandgap features HAS(TALERT).
+ * In this case, the driver needs to handle the TALERT signals as an IRQs.
+ * TALERT is a normal IRQ and it is fired any time thresholds (hot or cold)
+ * are violated. In these situation, the driver must reprogram the thresholds,
+ * accordingly to specified policy.
+ *
+ * Return: 0 if no error, else return corresponding error.
+ */
+static int ti_bandgap_talert_init(struct ti_bandgap *bgp,
+				  struct platform_device *pdev)
+{
+	int ret;
+
+	bgp->irq = platform_get_irq(pdev, 0);
+	if (bgp->irq < 0)
+		return bgp->irq;
+
+	ret = request_threaded_irq(bgp->irq, NULL,
+				   ti_bandgap_talert_irq_handler,
+				   IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
+				   "talert", bgp);
+	if (ret) {
+		dev_err(&pdev->dev, "Request threaded irq failed.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id of_ti_bandgap_match[];
+/**
+ * ti_bandgap_build() - parse DT and setup a struct ti_bandgap
+ * @pdev: pointer to device struct platform_device
+ *
+ * Used to read the device tree properties accordingly to the bandgap
+ * matching version. Based on bandgap version and its capabilities it
+ * will build a struct ti_bandgap out of the required DT entries.
+ *
+ * Return: valid bandgap structure if successful, else returns ERR_PTR
+ * return value must be verified with IS_ERR.
+ */
+static struct ti_bandgap *ti_bandgap_build(struct platform_device *pdev)
+{
+	struct device_node *node = pdev->dev.of_node;
+	const struct of_device_id *of_id;
+	struct ti_bandgap *bgp;
+	struct resource *res;
+	int i;
+
+	/* just for the sake */
+	if (!node) {
+		dev_err(&pdev->dev, "no platform information available\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	bgp = devm_kzalloc(&pdev->dev, sizeof(*bgp), GFP_KERNEL);
+	if (!bgp)
+		return ERR_PTR(-ENOMEM);
+
+	of_id = of_match_device(of_ti_bandgap_match, &pdev->dev);
+	if (of_id)
+		bgp->conf = of_id->data;
+
+	/* register shadow for context save and restore */
+	bgp->regval = devm_kcalloc(&pdev->dev, bgp->conf->sensor_count,
+				   sizeof(*bgp->regval), GFP_KERNEL);
+	if (!bgp->regval)
+		return ERR_PTR(-ENOMEM);
+
+	i = 0;
+	do {
+		void __iomem *chunk;
+
+		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
+		if (!res)
+			break;
+		chunk = devm_ioremap_resource(&pdev->dev, res);
+		if (i == 0)
+			bgp->base = chunk;
+		if (IS_ERR(chunk))
+			return ERR_CAST(chunk);
+
+		i++;
+	} while (res);
+
+	if (TI_BANDGAP_HAS(bgp, TSHUT)) {
+		bgp->tshut_gpiod = devm_gpiod_get(&pdev->dev, NULL, GPIOD_IN);
+		if (IS_ERR(bgp->tshut_gpiod)) {
+			dev_err(&pdev->dev, "invalid gpio for tshut\n");
+			return ERR_CAST(bgp->tshut_gpiod);
+		}
+	}
+
+	return bgp;
+}
+
+/*
+ * List of SoCs on which the CPU PM notifier can cause erros on the DTEMP
+ * readout.
+ * Enabled notifier on these machines results in erroneous, random values which
+ * could trigger unexpected thermal shutdown.
+ */
+static const struct soc_device_attribute soc_no_cpu_notifier[] = {
+	{ .machine = "OMAP4430" },
+	{ /* sentinel */ }
+};
+
+/***   Device driver call backs   ***/
+
+static
+int ti_bandgap_probe(struct platform_device *pdev)
+{
+	struct ti_bandgap *bgp;
+	int clk_rate, ret, i;
+
+	bgp = ti_bandgap_build(pdev);
+	if (IS_ERR(bgp)) {
+		dev_err(&pdev->dev, "failed to fetch platform data\n");
+		return PTR_ERR(bgp);
+	}
+	bgp->dev = &pdev->dev;
+
+	if (TI_BANDGAP_HAS(bgp, UNRELIABLE))
+		dev_warn(&pdev->dev,
+			 "This OMAP thermal sensor is unreliable. You've been warned\n");
+
+	if (TI_BANDGAP_HAS(bgp, TSHUT)) {
+		ret = ti_bandgap_tshut_init(bgp, pdev);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"failed to initialize system tshut IRQ\n");
+			return ret;
+		}
+	}
+
+	bgp->fclock = clk_get(NULL, bgp->conf->fclock_name);
+	if (IS_ERR(bgp->fclock)) {
+		dev_err(&pdev->dev, "failed to request fclock reference\n");
+		ret = PTR_ERR(bgp->fclock);
+		goto free_irqs;
+	}
+
+	bgp->div_clk = clk_get(NULL, bgp->conf->div_ck_name);
+	if (IS_ERR(bgp->div_clk)) {
+		dev_err(&pdev->dev, "failed to request div_ts_ck clock ref\n");
+		ret = PTR_ERR(bgp->div_clk);
+		goto put_fclock;
+	}
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_registers *tsr;
+		u32 val;
+
+		tsr = bgp->conf->sensors[i].registers;
+		/*
+		 * check if the efuse has a non-zero value if not
+		 * it is an untrimmed sample and the temperatures
+		 * may not be accurate
+		 */
+		val = ti_bandgap_readl(bgp, tsr->bgap_efuse);
+		if (!val)
+			dev_info(&pdev->dev,
+				 "Non-trimmed BGAP, Temp not accurate\n");
+	}
+
+	clk_rate = clk_round_rate(bgp->div_clk,
+				  bgp->conf->sensors[0].ts_data->max_freq);
+	if (clk_rate < bgp->conf->sensors[0].ts_data->min_freq ||
+	    clk_rate <= 0) {
+		ret = -ENODEV;
+		dev_err(&pdev->dev, "wrong clock rate (%d)\n", clk_rate);
+		goto put_clks;
+	}
+
+	ret = clk_set_rate(bgp->div_clk, clk_rate);
+	if (ret)
+		dev_err(&pdev->dev, "Cannot re-set clock rate. Continuing\n");
+
+	bgp->clk_rate = clk_rate;
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_prepare_enable(bgp->fclock);
+
+
+	spin_lock_init(&bgp->lock);
+	bgp->dev = &pdev->dev;
+	platform_set_drvdata(pdev, bgp);
+
+	ti_bandgap_power(bgp, true);
+
+	/* Set default counter to 1 for now */
+	if (TI_BANDGAP_HAS(bgp, COUNTER))
+		for (i = 0; i < bgp->conf->sensor_count; i++)
+			RMW_BITS(bgp, i, bgap_counter, counter_mask, 1);
+
+	/* Set default thresholds for alert and shutdown */
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_data *ts_data;
+
+		ts_data = bgp->conf->sensors[i].ts_data;
+
+		if (TI_BANDGAP_HAS(bgp, TALERT)) {
+			/* Set initial Talert thresholds */
+			RMW_BITS(bgp, i, bgap_threshold,
+				 threshold_tcold_mask, ts_data->t_cold);
+			RMW_BITS(bgp, i, bgap_threshold,
+				 threshold_thot_mask, ts_data->t_hot);
+			/* Enable the alert events */
+			RMW_BITS(bgp, i, bgap_mask_ctrl, mask_hot_mask, 1);
+			RMW_BITS(bgp, i, bgap_mask_ctrl, mask_cold_mask, 1);
+		}
+
+		if (TI_BANDGAP_HAS(bgp, TSHUT_CONFIG)) {
+			/* Set initial Tshut thresholds */
+			RMW_BITS(bgp, i, tshut_threshold,
+				 tshut_hot_mask, ts_data->tshut_hot);
+			RMW_BITS(bgp, i, tshut_threshold,
+				 tshut_cold_mask, ts_data->tshut_cold);
+		}
+	}
+
+	if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
+		ti_bandgap_set_continuous_mode(bgp);
+
+	/* Set .250 seconds time as default counter */
+	if (TI_BANDGAP_HAS(bgp, COUNTER))
+		for (i = 0; i < bgp->conf->sensor_count; i++)
+			RMW_BITS(bgp, i, bgap_counter, counter_mask,
+				 bgp->clk_rate / 4);
+
+	/* Every thing is good? Then expose the sensors */
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		char *domain;
+
+		if (bgp->conf->sensors[i].register_cooling) {
+			ret = bgp->conf->sensors[i].register_cooling(bgp, i);
+			if (ret)
+				goto remove_sensors;
+		}
+
+		if (bgp->conf->expose_sensor) {
+			domain = bgp->conf->sensors[i].domain;
+			ret = bgp->conf->expose_sensor(bgp, i, domain);
+			if (ret)
+				goto remove_last_cooling;
+		}
+	}
+
+	/*
+	 * Enable the Interrupts once everything is set. Otherwise irq handler
+	 * might be called as soon as it is enabled where as rest of framework
+	 * is still getting initialised.
+	 */
+	if (TI_BANDGAP_HAS(bgp, TALERT)) {
+		ret = ti_bandgap_talert_init(bgp, pdev);
+		if (ret) {
+			dev_err(&pdev->dev, "failed to initialize Talert IRQ\n");
+			i = bgp->conf->sensor_count;
+			goto disable_clk;
+		}
+	}
+
+#ifdef CONFIG_PM_SLEEP
+	bgp->nb.notifier_call = bandgap_omap_cpu_notifier;
+	if (!soc_device_match(soc_no_cpu_notifier))
+		cpu_pm_register_notifier(&bgp->nb);
+#endif
+
+	return 0;
+
+remove_last_cooling:
+	if (bgp->conf->sensors[i].unregister_cooling)
+		bgp->conf->sensors[i].unregister_cooling(bgp, i);
+remove_sensors:
+	for (i--; i >= 0; i--) {
+		if (bgp->conf->sensors[i].unregister_cooling)
+			bgp->conf->sensors[i].unregister_cooling(bgp, i);
+		if (bgp->conf->remove_sensor)
+			bgp->conf->remove_sensor(bgp, i);
+	}
+	ti_bandgap_power(bgp, false);
+disable_clk:
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_disable_unprepare(bgp->fclock);
+put_clks:
+	clk_put(bgp->div_clk);
+put_fclock:
+	clk_put(bgp->fclock);
+free_irqs:
+	if (TI_BANDGAP_HAS(bgp, TSHUT))
+		free_irq(gpiod_to_irq(bgp->tshut_gpiod), NULL);
+
+	return ret;
+}
+
+static
+int ti_bandgap_remove(struct platform_device *pdev)
+{
+	struct ti_bandgap *bgp = platform_get_drvdata(pdev);
+	int i;
+
+	if (!soc_device_match(soc_no_cpu_notifier))
+		cpu_pm_unregister_notifier(&bgp->nb);
+
+	/* Remove sensor interfaces */
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		if (bgp->conf->sensors[i].unregister_cooling)
+			bgp->conf->sensors[i].unregister_cooling(bgp, i);
+
+		if (bgp->conf->remove_sensor)
+			bgp->conf->remove_sensor(bgp, i);
+	}
+
+	ti_bandgap_power(bgp, false);
+
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_disable_unprepare(bgp->fclock);
+	clk_put(bgp->fclock);
+	clk_put(bgp->div_clk);
+
+	if (TI_BANDGAP_HAS(bgp, TALERT))
+		free_irq(bgp->irq, bgp);
+
+	if (TI_BANDGAP_HAS(bgp, TSHUT))
+		free_irq(gpiod_to_irq(bgp->tshut_gpiod), NULL);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int ti_bandgap_save_ctxt(struct ti_bandgap *bgp)
+{
+	int i;
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_registers *tsr;
+		struct temp_sensor_regval *rval;
+
+		rval = &bgp->regval[i];
+		tsr = bgp->conf->sensors[i].registers;
+
+		if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
+			rval->bg_mode_ctrl = ti_bandgap_readl(bgp,
+							tsr->bgap_mode_ctrl);
+		if (TI_BANDGAP_HAS(bgp, COUNTER))
+			rval->bg_counter = ti_bandgap_readl(bgp,
+							tsr->bgap_counter);
+		if (TI_BANDGAP_HAS(bgp, TALERT)) {
+			rval->bg_threshold = ti_bandgap_readl(bgp,
+							tsr->bgap_threshold);
+			rval->bg_ctrl = ti_bandgap_readl(bgp,
+						   tsr->bgap_mask_ctrl);
+		}
+
+		if (TI_BANDGAP_HAS(bgp, TSHUT_CONFIG))
+			rval->tshut_threshold = ti_bandgap_readl(bgp,
+						   tsr->tshut_threshold);
+	}
+
+	return 0;
+}
+
+static int ti_bandgap_restore_ctxt(struct ti_bandgap *bgp)
+{
+	int i;
+
+	for (i = 0; i < bgp->conf->sensor_count; i++) {
+		struct temp_sensor_registers *tsr;
+		struct temp_sensor_regval *rval;
+
+		rval = &bgp->regval[i];
+		tsr = bgp->conf->sensors[i].registers;
+
+		if (TI_BANDGAP_HAS(bgp, TSHUT_CONFIG))
+			ti_bandgap_writel(bgp, rval->tshut_threshold,
+					  tsr->tshut_threshold);
+		/* Force immediate temperature measurement and update
+		 * of the DTEMP field
+		 */
+		ti_bandgap_force_single_read(bgp, i);
+
+		if (TI_BANDGAP_HAS(bgp, COUNTER))
+			ti_bandgap_writel(bgp, rval->bg_counter,
+					  tsr->bgap_counter);
+		if (TI_BANDGAP_HAS(bgp, MODE_CONFIG))
+			ti_bandgap_writel(bgp, rval->bg_mode_ctrl,
+					  tsr->bgap_mode_ctrl);
+		if (TI_BANDGAP_HAS(bgp, TALERT)) {
+			ti_bandgap_writel(bgp, rval->bg_threshold,
+					  tsr->bgap_threshold);
+			ti_bandgap_writel(bgp, rval->bg_ctrl,
+					  tsr->bgap_mask_ctrl);
+		}
+	}
+
+	return 0;
+}
+
+static int ti_bandgap_suspend(struct device *dev)
+{
+	struct ti_bandgap *bgp = dev_get_drvdata(dev);
+	int err;
+
+	err = ti_bandgap_save_ctxt(bgp);
+	ti_bandgap_power(bgp, false);
+
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_disable_unprepare(bgp->fclock);
+
+	bgp->is_suspended = true;
+
+	return err;
+}
+
+static int bandgap_omap_cpu_notifier(struct notifier_block *nb,
+				  unsigned long cmd, void *v)
+{
+	struct ti_bandgap *bgp;
+
+	bgp = container_of(nb, struct ti_bandgap, nb);
+
+	spin_lock(&bgp->lock);
+	switch (cmd) {
+	case CPU_CLUSTER_PM_ENTER:
+		if (bgp->is_suspended)
+			break;
+		ti_bandgap_save_ctxt(bgp);
+		ti_bandgap_power(bgp, false);
+		if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+			clk_disable(bgp->fclock);
+		break;
+	case CPU_CLUSTER_PM_ENTER_FAILED:
+	case CPU_CLUSTER_PM_EXIT:
+		if (bgp->is_suspended)
+			break;
+		if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+			clk_enable(bgp->fclock);
+		ti_bandgap_power(bgp, true);
+		ti_bandgap_restore_ctxt(bgp);
+		break;
+	}
+	spin_unlock(&bgp->lock);
+
+	return NOTIFY_OK;
+}
+
+static int ti_bandgap_resume(struct device *dev)
+{
+	struct ti_bandgap *bgp = dev_get_drvdata(dev);
+
+	if (TI_BANDGAP_HAS(bgp, CLK_CTRL))
+		clk_prepare_enable(bgp->fclock);
+
+	ti_bandgap_power(bgp, true);
+	bgp->is_suspended = false;
+
+	return ti_bandgap_restore_ctxt(bgp);
+}
+static SIMPLE_DEV_PM_OPS(ti_bandgap_dev_pm_ops, ti_bandgap_suspend,
+			 ti_bandgap_resume);
+
+#define DEV_PM_OPS	(&ti_bandgap_dev_pm_ops)
+#else
+#define DEV_PM_OPS	NULL
+#endif
+
+static const struct of_device_id of_ti_bandgap_match[] = {
+#ifdef CONFIG_OMAP3_THERMAL
+	{
+		.compatible = "ti,omap34xx-bandgap",
+		.data = (void *)&omap34xx_data,
+	},
+	{
+		.compatible = "ti,omap36xx-bandgap",
+		.data = (void *)&omap36xx_data,
+	},
+#endif
+#ifdef CONFIG_OMAP4_THERMAL
+	{
+		.compatible = "ti,omap4430-bandgap",
+		.data = (void *)&omap4430_data,
+	},
+	{
+		.compatible = "ti,omap4460-bandgap",
+		.data = (void *)&omap4460_data,
+	},
+	{
+		.compatible = "ti,omap4470-bandgap",
+		.data = (void *)&omap4470_data,
+	},
+#endif
+#ifdef CONFIG_OMAP5_THERMAL
+	{
+		.compatible = "ti,omap5430-bandgap",
+		.data = (void *)&omap5430_data,
+	},
+#endif
+#ifdef CONFIG_DRA752_THERMAL
+	{
+		.compatible = "ti,dra752-bandgap",
+		.data = (void *)&dra752_data,
+	},
+#endif
+	/* Sentinel */
+	{ },
+};
+MODULE_DEVICE_TABLE(of, of_ti_bandgap_match);
+
+static struct platform_driver ti_bandgap_sensor_driver = {
+	.probe = ti_bandgap_probe,
+	.remove = ti_bandgap_remove,
+	.driver = {
+			.name = "ti-soc-thermal",
+			.pm = DEV_PM_OPS,
+			.of_match_table	= of_ti_bandgap_match,
+	},
+};
+
+module_platform_driver(ti_bandgap_sensor_driver);
+
+MODULE_DESCRIPTION("OMAP4+ bandgap temperature sensor driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:ti-soc-thermal");
+MODULE_AUTHOR("Texas Instrument Inc.");