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, 1033 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
new file mode 100644
index 000000000..4d4f3b1a7
--- /dev/null
+++ b/drivers/rtc/rtc-omap.c
@@ -0,0 +1,1033 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * TI OMAP Real Time Clock interface for Linux
+ *
+ * Copyright (C) 2003 MontaVista Software, Inc.
+ * Author: George G. Davis <gdavis@mvista.com> or <source@mvista.com>
+ *
+ * Copyright (C) 2006 David Brownell (new RTC framework)
+ * Copyright (C) 2014 Johan Hovold <johan@kernel.org>
+ */
+
+#include <linux/bcd.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/rtc.h>
+
+/*
+ * The OMAP RTC is a year/month/day/hours/minutes/seconds BCD clock
+ * with century-range alarm matching, driven by the 32kHz clock.
+ *
+ * The main user-visible ways it differs from PC RTCs are by omitting
+ * "don't care" alarm fields and sub-second periodic IRQs, and having
+ * an autoadjust mechanism to calibrate to the true oscillator rate.
+ *
+ * Board-specific wiring options include using split power mode with
+ * RTC_OFF_NOFF used as the reset signal (so the RTC won't be reset),
+ * and wiring RTC_WAKE_INT (so the RTC alarm can wake the system from
+ * low power modes) for OMAP1 boards (OMAP-L138 has this built into
+ * the SoC). See the BOARD-SPECIFIC CUSTOMIZATION comment.
+ */
+
+/* RTC registers */
+#define OMAP_RTC_SECONDS_REG		0x00
+#define OMAP_RTC_MINUTES_REG		0x04
+#define OMAP_RTC_HOURS_REG		0x08
+#define OMAP_RTC_DAYS_REG		0x0C
+#define OMAP_RTC_MONTHS_REG		0x10
+#define OMAP_RTC_YEARS_REG		0x14
+#define OMAP_RTC_WEEKS_REG		0x18
+
+#define OMAP_RTC_ALARM_SECONDS_REG	0x20
+#define OMAP_RTC_ALARM_MINUTES_REG	0x24
+#define OMAP_RTC_ALARM_HOURS_REG	0x28
+#define OMAP_RTC_ALARM_DAYS_REG		0x2c
+#define OMAP_RTC_ALARM_MONTHS_REG	0x30
+#define OMAP_RTC_ALARM_YEARS_REG	0x34
+
+#define OMAP_RTC_CTRL_REG		0x40
+#define OMAP_RTC_STATUS_REG		0x44
+#define OMAP_RTC_INTERRUPTS_REG		0x48
+
+#define OMAP_RTC_COMP_LSB_REG		0x4c
+#define OMAP_RTC_COMP_MSB_REG		0x50
+#define OMAP_RTC_OSC_REG		0x54
+
+#define OMAP_RTC_SCRATCH0_REG		0x60
+#define OMAP_RTC_SCRATCH1_REG		0x64
+#define OMAP_RTC_SCRATCH2_REG		0x68
+
+#define OMAP_RTC_KICK0_REG		0x6c
+#define OMAP_RTC_KICK1_REG		0x70
+
+#define OMAP_RTC_IRQWAKEEN		0x7c
+
+#define OMAP_RTC_ALARM2_SECONDS_REG	0x80
+#define OMAP_RTC_ALARM2_MINUTES_REG	0x84
+#define OMAP_RTC_ALARM2_HOURS_REG	0x88
+#define OMAP_RTC_ALARM2_DAYS_REG	0x8c
+#define OMAP_RTC_ALARM2_MONTHS_REG	0x90
+#define OMAP_RTC_ALARM2_YEARS_REG	0x94
+
+#define OMAP_RTC_PMIC_REG		0x98
+
+/* OMAP_RTC_CTRL_REG bit fields: */
+#define OMAP_RTC_CTRL_SPLIT		BIT(7)
+#define OMAP_RTC_CTRL_DISABLE		BIT(6)
+#define OMAP_RTC_CTRL_SET_32_COUNTER	BIT(5)
+#define OMAP_RTC_CTRL_TEST		BIT(4)
+#define OMAP_RTC_CTRL_MODE_12_24	BIT(3)
+#define OMAP_RTC_CTRL_AUTO_COMP		BIT(2)
+#define OMAP_RTC_CTRL_ROUND_30S		BIT(1)
+#define OMAP_RTC_CTRL_STOP		BIT(0)
+
+/* OMAP_RTC_STATUS_REG bit fields: */
+#define OMAP_RTC_STATUS_POWER_UP	BIT(7)
+#define OMAP_RTC_STATUS_ALARM2		BIT(7)
+#define OMAP_RTC_STATUS_ALARM		BIT(6)
+#define OMAP_RTC_STATUS_1D_EVENT	BIT(5)
+#define OMAP_RTC_STATUS_1H_EVENT	BIT(4)
+#define OMAP_RTC_STATUS_1M_EVENT	BIT(3)
+#define OMAP_RTC_STATUS_1S_EVENT	BIT(2)
+#define OMAP_RTC_STATUS_RUN		BIT(1)
+#define OMAP_RTC_STATUS_BUSY		BIT(0)
+
+/* OMAP_RTC_INTERRUPTS_REG bit fields: */
+#define OMAP_RTC_INTERRUPTS_IT_ALARM2	BIT(4)
+#define OMAP_RTC_INTERRUPTS_IT_ALARM	BIT(3)
+#define OMAP_RTC_INTERRUPTS_IT_TIMER	BIT(2)
+
+/* OMAP_RTC_OSC_REG bit fields: */
+#define OMAP_RTC_OSC_32KCLK_EN		BIT(6)
+#define OMAP_RTC_OSC_SEL_32KCLK_SRC	BIT(3)
+#define OMAP_RTC_OSC_OSC32K_GZ_DISABLE	BIT(4)
+
+/* OMAP_RTC_IRQWAKEEN bit fields: */
+#define OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN	BIT(1)
+
+/* OMAP_RTC_PMIC bit fields: */
+#define OMAP_RTC_PMIC_POWER_EN_EN	BIT(16)
+#define OMAP_RTC_PMIC_EXT_WKUP_EN(x)	BIT(x)
+#define OMAP_RTC_PMIC_EXT_WKUP_POL(x)	BIT(4 + x)
+
+/* OMAP_RTC_KICKER values */
+#define	KICK0_VALUE			0x83e70b13
+#define	KICK1_VALUE			0x95a4f1e0
+
+struct omap_rtc;
+
+struct omap_rtc_device_type {
+	bool has_32kclk_en;
+	bool has_irqwakeen;
+	bool has_pmic_mode;
+	bool has_power_up_reset;
+	void (*lock)(struct omap_rtc *rtc);
+	void (*unlock)(struct omap_rtc *rtc);
+};
+
+struct omap_rtc {
+	struct rtc_device *rtc;
+	void __iomem *base;
+	struct clk *clk;
+	int irq_alarm;
+	int irq_timer;
+	u8 interrupts_reg;
+	bool is_pmic_controller;
+	bool has_ext_clk;
+	bool is_suspending;
+	const struct omap_rtc_device_type *type;
+	struct pinctrl_dev *pctldev;
+};
+
+static inline u8 rtc_read(struct omap_rtc *rtc, unsigned int reg)
+{
+	return readb(rtc->base + reg);
+}
+
+static inline u32 rtc_readl(struct omap_rtc *rtc, unsigned int reg)
+{
+	return readl(rtc->base + reg);
+}
+
+static inline void rtc_write(struct omap_rtc *rtc, unsigned int reg, u8 val)
+{
+	writeb(val, rtc->base + reg);
+}
+
+static inline void rtc_writel(struct omap_rtc *rtc, unsigned int reg, u32 val)
+{
+	writel(val, rtc->base + reg);
+}
+
+static void am3352_rtc_unlock(struct omap_rtc *rtc)
+{
+	rtc_writel(rtc, OMAP_RTC_KICK0_REG, KICK0_VALUE);
+	rtc_writel(rtc, OMAP_RTC_KICK1_REG, KICK1_VALUE);
+}
+
+static void am3352_rtc_lock(struct omap_rtc *rtc)
+{
+	rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0);
+	rtc_writel(rtc, OMAP_RTC_KICK1_REG, 0);
+}
+
+static void default_rtc_unlock(struct omap_rtc *rtc)
+{
+}
+
+static void default_rtc_lock(struct omap_rtc *rtc)
+{
+}
+
+/*
+ * We rely on the rtc framework to handle locking (rtc->ops_lock),
+ * so the only other requirement is that register accesses which
+ * require BUSY to be clear are made with IRQs locally disabled
+ */
+static void rtc_wait_not_busy(struct omap_rtc *rtc)
+{
+	int count;
+	u8 status;
+
+	/* BUSY may stay active for 1/32768 second (~30 usec) */
+	for (count = 0; count < 50; count++) {
+		status = rtc_read(rtc, OMAP_RTC_STATUS_REG);
+		if (!(status & OMAP_RTC_STATUS_BUSY))
+			break;
+		udelay(1);
+	}
+	/* now we have ~15 usec to read/write various registers */
+}
+
+static irqreturn_t rtc_irq(int irq, void *dev_id)
+{
+	struct omap_rtc	*rtc = dev_id;
+	unsigned long events = 0;
+	u8 irq_data;
+
+	irq_data = rtc_read(rtc, OMAP_RTC_STATUS_REG);
+
+	/* alarm irq? */
+	if (irq_data & OMAP_RTC_STATUS_ALARM) {
+		rtc->type->unlock(rtc);
+		rtc_write(rtc, OMAP_RTC_STATUS_REG, OMAP_RTC_STATUS_ALARM);
+		rtc->type->lock(rtc);
+		events |= RTC_IRQF | RTC_AF;
+	}
+
+	/* 1/sec periodic/update irq? */
+	if (irq_data & OMAP_RTC_STATUS_1S_EVENT)
+		events |= RTC_IRQF | RTC_UF;
+
+	rtc_update_irq(rtc->rtc, 1, events);
+
+	return IRQ_HANDLED;
+}
+
+static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+	u8 reg, irqwake_reg = 0;
+
+	local_irq_disable();
+	rtc_wait_not_busy(rtc);
+	reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+	if (rtc->type->has_irqwakeen)
+		irqwake_reg = rtc_read(rtc, OMAP_RTC_IRQWAKEEN);
+
+	if (enabled) {
+		reg |= OMAP_RTC_INTERRUPTS_IT_ALARM;
+		irqwake_reg |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
+	} else {
+		reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM;
+		irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
+	}
+	rtc_wait_not_busy(rtc);
+	rtc->type->unlock(rtc);
+	rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg);
+	if (rtc->type->has_irqwakeen)
+		rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg);
+	rtc->type->lock(rtc);
+	local_irq_enable();
+
+	return 0;
+}
+
+/* this hardware doesn't support "don't care" alarm fields */
+static void tm2bcd(struct rtc_time *tm)
+{
+	tm->tm_sec = bin2bcd(tm->tm_sec);
+	tm->tm_min = bin2bcd(tm->tm_min);
+	tm->tm_hour = bin2bcd(tm->tm_hour);
+	tm->tm_mday = bin2bcd(tm->tm_mday);
+
+	tm->tm_mon = bin2bcd(tm->tm_mon + 1);
+	tm->tm_year = bin2bcd(tm->tm_year - 100);
+}
+
+static void bcd2tm(struct rtc_time *tm)
+{
+	tm->tm_sec = bcd2bin(tm->tm_sec);
+	tm->tm_min = bcd2bin(tm->tm_min);
+	tm->tm_hour = bcd2bin(tm->tm_hour);
+	tm->tm_mday = bcd2bin(tm->tm_mday);
+	tm->tm_mon = bcd2bin(tm->tm_mon) - 1;
+	/* epoch == 1900 */
+	tm->tm_year = bcd2bin(tm->tm_year) + 100;
+}
+
+static void omap_rtc_read_time_raw(struct omap_rtc *rtc, struct rtc_time *tm)
+{
+	tm->tm_sec = rtc_read(rtc, OMAP_RTC_SECONDS_REG);
+	tm->tm_min = rtc_read(rtc, OMAP_RTC_MINUTES_REG);
+	tm->tm_hour = rtc_read(rtc, OMAP_RTC_HOURS_REG);
+	tm->tm_mday = rtc_read(rtc, OMAP_RTC_DAYS_REG);
+	tm->tm_mon = rtc_read(rtc, OMAP_RTC_MONTHS_REG);
+	tm->tm_year = rtc_read(rtc, OMAP_RTC_YEARS_REG);
+}
+
+static int omap_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+
+	/* we don't report wday/yday/isdst ... */
+	local_irq_disable();
+	rtc_wait_not_busy(rtc);
+	omap_rtc_read_time_raw(rtc, tm);
+	local_irq_enable();
+
+	bcd2tm(tm);
+
+	return 0;
+}
+
+static int omap_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+
+	tm2bcd(tm);
+
+	local_irq_disable();
+	rtc_wait_not_busy(rtc);
+
+	rtc->type->unlock(rtc);
+	rtc_write(rtc, OMAP_RTC_YEARS_REG, tm->tm_year);
+	rtc_write(rtc, OMAP_RTC_MONTHS_REG, tm->tm_mon);
+	rtc_write(rtc, OMAP_RTC_DAYS_REG, tm->tm_mday);
+	rtc_write(rtc, OMAP_RTC_HOURS_REG, tm->tm_hour);
+	rtc_write(rtc, OMAP_RTC_MINUTES_REG, tm->tm_min);
+	rtc_write(rtc, OMAP_RTC_SECONDS_REG, tm->tm_sec);
+	rtc->type->lock(rtc);
+
+	local_irq_enable();
+
+	return 0;
+}
+
+static int omap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+	u8 interrupts;
+
+	local_irq_disable();
+	rtc_wait_not_busy(rtc);
+
+	alm->time.tm_sec = rtc_read(rtc, OMAP_RTC_ALARM_SECONDS_REG);
+	alm->time.tm_min = rtc_read(rtc, OMAP_RTC_ALARM_MINUTES_REG);
+	alm->time.tm_hour = rtc_read(rtc, OMAP_RTC_ALARM_HOURS_REG);
+	alm->time.tm_mday = rtc_read(rtc, OMAP_RTC_ALARM_DAYS_REG);
+	alm->time.tm_mon = rtc_read(rtc, OMAP_RTC_ALARM_MONTHS_REG);
+	alm->time.tm_year = rtc_read(rtc, OMAP_RTC_ALARM_YEARS_REG);
+
+	local_irq_enable();
+
+	bcd2tm(&alm->time);
+
+	interrupts = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+	alm->enabled = !!(interrupts & OMAP_RTC_INTERRUPTS_IT_ALARM);
+
+	return 0;
+}
+
+static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+	u8 reg, irqwake_reg = 0;
+
+	tm2bcd(&alm->time);
+
+	local_irq_disable();
+	rtc_wait_not_busy(rtc);
+
+	rtc->type->unlock(rtc);
+	rtc_write(rtc, OMAP_RTC_ALARM_YEARS_REG, alm->time.tm_year);
+	rtc_write(rtc, OMAP_RTC_ALARM_MONTHS_REG, alm->time.tm_mon);
+	rtc_write(rtc, OMAP_RTC_ALARM_DAYS_REG, alm->time.tm_mday);
+	rtc_write(rtc, OMAP_RTC_ALARM_HOURS_REG, alm->time.tm_hour);
+	rtc_write(rtc, OMAP_RTC_ALARM_MINUTES_REG, alm->time.tm_min);
+	rtc_write(rtc, OMAP_RTC_ALARM_SECONDS_REG, alm->time.tm_sec);
+
+	reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+	if (rtc->type->has_irqwakeen)
+		irqwake_reg = rtc_read(rtc, OMAP_RTC_IRQWAKEEN);
+
+	if (alm->enabled) {
+		reg |= OMAP_RTC_INTERRUPTS_IT_ALARM;
+		irqwake_reg |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
+	} else {
+		reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM;
+		irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN;
+	}
+	rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg);
+	if (rtc->type->has_irqwakeen)
+		rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg);
+	rtc->type->lock(rtc);
+
+	local_irq_enable();
+
+	return 0;
+}
+
+static struct omap_rtc *omap_rtc_power_off_rtc;
+
+/**
+ * omap_rtc_power_off_program: Set the pmic power off sequence. The RTC
+ * generates pmic_pwr_enable control, which can be used to control an external
+ * PMIC.
+ */
+int omap_rtc_power_off_program(struct device *dev)
+{
+	struct omap_rtc *rtc = omap_rtc_power_off_rtc;
+	struct rtc_time tm;
+	unsigned long now;
+	int seconds;
+	u32 val;
+
+	rtc->type->unlock(rtc);
+	/* enable pmic_power_en control */
+	val = rtc_readl(rtc, OMAP_RTC_PMIC_REG);
+	rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN);
+
+again:
+	/* Clear any existing ALARM2 event */
+	rtc_writel(rtc, OMAP_RTC_STATUS_REG, OMAP_RTC_STATUS_ALARM2);
+
+	/* set alarm one second from now */
+	omap_rtc_read_time_raw(rtc, &tm);
+	seconds = tm.tm_sec;
+	bcd2tm(&tm);
+	now = rtc_tm_to_time64(&tm);
+	rtc_time64_to_tm(now + 1, &tm);
+
+	tm2bcd(&tm);
+
+	rtc_wait_not_busy(rtc);
+
+	rtc_write(rtc, OMAP_RTC_ALARM2_SECONDS_REG, tm.tm_sec);
+	rtc_write(rtc, OMAP_RTC_ALARM2_MINUTES_REG, tm.tm_min);
+	rtc_write(rtc, OMAP_RTC_ALARM2_HOURS_REG, tm.tm_hour);
+	rtc_write(rtc, OMAP_RTC_ALARM2_DAYS_REG, tm.tm_mday);
+	rtc_write(rtc, OMAP_RTC_ALARM2_MONTHS_REG, tm.tm_mon);
+	rtc_write(rtc, OMAP_RTC_ALARM2_YEARS_REG, tm.tm_year);
+
+	/*
+	 * enable ALARM2 interrupt
+	 *
+	 * NOTE: this fails on AM3352 if rtc_write (writeb) is used
+	 */
+	val = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+	rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG,
+			val | OMAP_RTC_INTERRUPTS_IT_ALARM2);
+
+	/* Retry in case roll over happened before alarm was armed. */
+	if (rtc_read(rtc, OMAP_RTC_SECONDS_REG) != seconds) {
+		val = rtc_read(rtc, OMAP_RTC_STATUS_REG);
+		if (!(val & OMAP_RTC_STATUS_ALARM2))
+			goto again;
+	}
+
+	rtc->type->lock(rtc);
+
+	return 0;
+}
+EXPORT_SYMBOL(omap_rtc_power_off_program);
+
+/*
+ * omap_rtc_poweroff: RTC-controlled power off
+ *
+ * The RTC can be used to control an external PMIC via the pmic_power_en pin,
+ * which can be configured to transition to OFF on ALARM2 events.
+ *
+ * Notes:
+ * The one-second alarm offset is the shortest offset possible as the alarm
+ * registers must be set before the next timer update and the offset
+ * calculation is too heavy for everything to be done within a single access
+ * period (~15 us).
+ *
+ * Called with local interrupts disabled.
+ */
+static void omap_rtc_power_off(void)
+{
+	struct rtc_device *rtc = omap_rtc_power_off_rtc->rtc;
+	u32 val;
+
+	omap_rtc_power_off_program(rtc->dev.parent);
+
+	/* Set PMIC power enable and EXT_WAKEUP in case PB power on is used */
+	omap_rtc_power_off_rtc->type->unlock(omap_rtc_power_off_rtc);
+	val = rtc_readl(omap_rtc_power_off_rtc, OMAP_RTC_PMIC_REG);
+	val |= OMAP_RTC_PMIC_POWER_EN_EN | OMAP_RTC_PMIC_EXT_WKUP_POL(0) |
+			OMAP_RTC_PMIC_EXT_WKUP_EN(0);
+	rtc_writel(omap_rtc_power_off_rtc, OMAP_RTC_PMIC_REG, val);
+	omap_rtc_power_off_rtc->type->lock(omap_rtc_power_off_rtc);
+
+	/*
+	 * Wait for alarm to trigger (within one second) and external PMIC to
+	 * power off the system. Add a 500 ms margin for external latencies
+	 * (e.g. debounce circuits).
+	 */
+	mdelay(1500);
+}
+
+static const struct rtc_class_ops omap_rtc_ops = {
+	.read_time	= omap_rtc_read_time,
+	.set_time	= omap_rtc_set_time,
+	.read_alarm	= omap_rtc_read_alarm,
+	.set_alarm	= omap_rtc_set_alarm,
+	.alarm_irq_enable = omap_rtc_alarm_irq_enable,
+};
+
+static const struct omap_rtc_device_type omap_rtc_default_type = {
+	.has_power_up_reset = true,
+	.lock		= default_rtc_lock,
+	.unlock		= default_rtc_unlock,
+};
+
+static const struct omap_rtc_device_type omap_rtc_am3352_type = {
+	.has_32kclk_en	= true,
+	.has_irqwakeen	= true,
+	.has_pmic_mode	= true,
+	.lock		= am3352_rtc_lock,
+	.unlock		= am3352_rtc_unlock,
+};
+
+static const struct omap_rtc_device_type omap_rtc_da830_type = {
+	.lock		= am3352_rtc_lock,
+	.unlock		= am3352_rtc_unlock,
+};
+
+static const struct platform_device_id omap_rtc_id_table[] = {
+	{
+		.name	= "omap_rtc",
+		.driver_data = (kernel_ulong_t)&omap_rtc_default_type,
+	}, {
+		.name	= "am3352-rtc",
+		.driver_data = (kernel_ulong_t)&omap_rtc_am3352_type,
+	}, {
+		.name	= "da830-rtc",
+		.driver_data = (kernel_ulong_t)&omap_rtc_da830_type,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(platform, omap_rtc_id_table);
+
+static const struct of_device_id omap_rtc_of_match[] = {
+	{
+		.compatible	= "ti,am3352-rtc",
+		.data		= &omap_rtc_am3352_type,
+	}, {
+		.compatible	= "ti,da830-rtc",
+		.data		= &omap_rtc_da830_type,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(of, omap_rtc_of_match);
+
+static const struct pinctrl_pin_desc rtc_pins_desc[] = {
+	PINCTRL_PIN(0, "ext_wakeup0"),
+	PINCTRL_PIN(1, "ext_wakeup1"),
+	PINCTRL_PIN(2, "ext_wakeup2"),
+	PINCTRL_PIN(3, "ext_wakeup3"),
+};
+
+static int rtc_pinctrl_get_groups_count(struct pinctrl_dev *pctldev)
+{
+	return 0;
+}
+
+static const char *rtc_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
+					unsigned int group)
+{
+	return NULL;
+}
+
+static const struct pinctrl_ops rtc_pinctrl_ops = {
+	.get_groups_count = rtc_pinctrl_get_groups_count,
+	.get_group_name = rtc_pinctrl_get_group_name,
+	.dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
+	.dt_free_map = pinconf_generic_dt_free_map,
+};
+
+#define PIN_CONFIG_ACTIVE_HIGH		(PIN_CONFIG_END + 1)
+
+static const struct pinconf_generic_params rtc_params[] = {
+	{"ti,active-high", PIN_CONFIG_ACTIVE_HIGH, 0},
+};
+
+#ifdef CONFIG_DEBUG_FS
+static const struct pin_config_item rtc_conf_items[ARRAY_SIZE(rtc_params)] = {
+	PCONFDUMP(PIN_CONFIG_ACTIVE_HIGH, "input active high", NULL, false),
+};
+#endif
+
+static int rtc_pinconf_get(struct pinctrl_dev *pctldev,
+			unsigned int pin, unsigned long *config)
+{
+	struct omap_rtc *rtc = pinctrl_dev_get_drvdata(pctldev);
+	unsigned int param = pinconf_to_config_param(*config);
+	u32 val;
+	u16 arg = 0;
+
+	val = rtc_readl(rtc, OMAP_RTC_PMIC_REG);
+
+	switch (param) {
+	case PIN_CONFIG_INPUT_ENABLE:
+		if (!(val & OMAP_RTC_PMIC_EXT_WKUP_EN(pin)))
+			return -EINVAL;
+		break;
+	case PIN_CONFIG_ACTIVE_HIGH:
+		if (val & OMAP_RTC_PMIC_EXT_WKUP_POL(pin))
+			return -EINVAL;
+		break;
+	default:
+		return -ENOTSUPP;
+	}
+
+	*config = pinconf_to_config_packed(param, arg);
+
+	return 0;
+}
+
+static int rtc_pinconf_set(struct pinctrl_dev *pctldev,
+			unsigned int pin, unsigned long *configs,
+			unsigned int num_configs)
+{
+	struct omap_rtc *rtc = pinctrl_dev_get_drvdata(pctldev);
+	u32 val;
+	unsigned int param;
+	u32 param_val;
+	int i;
+
+	val = rtc_readl(rtc, OMAP_RTC_PMIC_REG);
+
+	/* active low by default */
+	val |= OMAP_RTC_PMIC_EXT_WKUP_POL(pin);
+
+	for (i = 0; i < num_configs; i++) {
+		param = pinconf_to_config_param(configs[i]);
+		param_val = pinconf_to_config_argument(configs[i]);
+
+		switch (param) {
+		case PIN_CONFIG_INPUT_ENABLE:
+			if (param_val)
+				val |= OMAP_RTC_PMIC_EXT_WKUP_EN(pin);
+			else
+				val &= ~OMAP_RTC_PMIC_EXT_WKUP_EN(pin);
+			break;
+		case PIN_CONFIG_ACTIVE_HIGH:
+			val &= ~OMAP_RTC_PMIC_EXT_WKUP_POL(pin);
+			break;
+		default:
+			dev_err(&rtc->rtc->dev, "Property %u not supported\n",
+				param);
+			return -ENOTSUPP;
+		}
+	}
+
+	rtc->type->unlock(rtc);
+	rtc_writel(rtc, OMAP_RTC_PMIC_REG, val);
+	rtc->type->lock(rtc);
+
+	return 0;
+}
+
+static const struct pinconf_ops rtc_pinconf_ops = {
+	.is_generic = true,
+	.pin_config_get = rtc_pinconf_get,
+	.pin_config_set = rtc_pinconf_set,
+};
+
+static struct pinctrl_desc rtc_pinctrl_desc = {
+	.pins = rtc_pins_desc,
+	.npins = ARRAY_SIZE(rtc_pins_desc),
+	.pctlops = &rtc_pinctrl_ops,
+	.confops = &rtc_pinconf_ops,
+	.custom_params = rtc_params,
+	.num_custom_params = ARRAY_SIZE(rtc_params),
+#ifdef CONFIG_DEBUG_FS
+	.custom_conf_items = rtc_conf_items,
+#endif
+	.owner = THIS_MODULE,
+};
+
+static int omap_rtc_scratch_read(void *priv, unsigned int offset, void *_val,
+				 size_t bytes)
+{
+	struct omap_rtc	*rtc = priv;
+	u32 *val = _val;
+	int i;
+
+	for (i = 0; i < bytes / 4; i++)
+		val[i] = rtc_readl(rtc,
+				   OMAP_RTC_SCRATCH0_REG + offset + (i * 4));
+
+	return 0;
+}
+
+static int omap_rtc_scratch_write(void *priv, unsigned int offset, void *_val,
+				  size_t bytes)
+{
+	struct omap_rtc	*rtc = priv;
+	u32 *val = _val;
+	int i;
+
+	rtc->type->unlock(rtc);
+	for (i = 0; i < bytes / 4; i++)
+		rtc_writel(rtc,
+			   OMAP_RTC_SCRATCH0_REG + offset + (i * 4), val[i]);
+	rtc->type->lock(rtc);
+
+	return 0;
+}
+
+static struct nvmem_config omap_rtc_nvmem_config = {
+	.name = "omap_rtc_scratch",
+	.word_size = 4,
+	.stride = 4,
+	.size = OMAP_RTC_KICK0_REG - OMAP_RTC_SCRATCH0_REG,
+	.reg_read = omap_rtc_scratch_read,
+	.reg_write = omap_rtc_scratch_write,
+};
+
+static int omap_rtc_probe(struct platform_device *pdev)
+{
+	struct omap_rtc	*rtc;
+	u8 reg, mask, new_ctrl;
+	const struct platform_device_id *id_entry;
+	const struct of_device_id *of_id;
+	int ret;
+
+	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
+	if (!rtc)
+		return -ENOMEM;
+
+	of_id = of_match_device(omap_rtc_of_match, &pdev->dev);
+	if (of_id) {
+		rtc->type = of_id->data;
+		rtc->is_pmic_controller = rtc->type->has_pmic_mode &&
+			of_device_is_system_power_controller(pdev->dev.of_node);
+	} else {
+		id_entry = platform_get_device_id(pdev);
+		rtc->type = (void *)id_entry->driver_data;
+	}
+
+	rtc->irq_timer = platform_get_irq(pdev, 0);
+	if (rtc->irq_timer <= 0)
+		return -ENOENT;
+
+	rtc->irq_alarm = platform_get_irq(pdev, 1);
+	if (rtc->irq_alarm <= 0)
+		return -ENOENT;
+
+	rtc->clk = devm_clk_get(&pdev->dev, "ext-clk");
+	if (!IS_ERR(rtc->clk))
+		rtc->has_ext_clk = true;
+	else
+		rtc->clk = devm_clk_get(&pdev->dev, "int-clk");
+
+	if (!IS_ERR(rtc->clk))
+		clk_prepare_enable(rtc->clk);
+
+	rtc->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(rtc->base)) {
+		clk_disable_unprepare(rtc->clk);
+		return PTR_ERR(rtc->base);
+	}
+
+	platform_set_drvdata(pdev, rtc);
+
+	/* Enable the clock/module so that we can access the registers */
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_get_sync(&pdev->dev);
+
+	rtc->type->unlock(rtc);
+
+	/*
+	 * disable interrupts
+	 *
+	 * NOTE: ALARM2 is not cleared on AM3352 if rtc_write (writeb) is used
+	 */
+	rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
+
+	/* enable RTC functional clock */
+	if (rtc->type->has_32kclk_en) {
+		reg = rtc_read(rtc, OMAP_RTC_OSC_REG);
+		rtc_write(rtc, OMAP_RTC_OSC_REG, reg | OMAP_RTC_OSC_32KCLK_EN);
+	}
+
+	/* clear old status */
+	reg = rtc_read(rtc, OMAP_RTC_STATUS_REG);
+
+	mask = OMAP_RTC_STATUS_ALARM;
+
+	if (rtc->type->has_pmic_mode)
+		mask |= OMAP_RTC_STATUS_ALARM2;
+
+	if (rtc->type->has_power_up_reset) {
+		mask |= OMAP_RTC_STATUS_POWER_UP;
+		if (reg & OMAP_RTC_STATUS_POWER_UP)
+			dev_info(&pdev->dev, "RTC power up reset detected\n");
+	}
+
+	if (reg & mask)
+		rtc_write(rtc, OMAP_RTC_STATUS_REG, reg & mask);
+
+	/* On boards with split power, RTC_ON_NOFF won't reset the RTC */
+	reg = rtc_read(rtc, OMAP_RTC_CTRL_REG);
+	if (reg & OMAP_RTC_CTRL_STOP)
+		dev_info(&pdev->dev, "already running\n");
+
+	/* force to 24 hour mode */
+	new_ctrl = reg & (OMAP_RTC_CTRL_SPLIT | OMAP_RTC_CTRL_AUTO_COMP);
+	new_ctrl |= OMAP_RTC_CTRL_STOP;
+
+	/*
+	 * BOARD-SPECIFIC CUSTOMIZATION CAN GO HERE:
+	 *
+	 *  - Device wake-up capability setting should come through chip
+	 *    init logic. OMAP1 boards should initialize the "wakeup capable"
+	 *    flag in the platform device if the board is wired right for
+	 *    being woken up by RTC alarm. For OMAP-L138, this capability
+	 *    is built into the SoC by the "Deep Sleep" capability.
+	 *
+	 *  - Boards wired so RTC_ON_nOFF is used as the reset signal,
+	 *    rather than nPWRON_RESET, should forcibly enable split
+	 *    power mode.  (Some chip errata report that RTC_CTRL_SPLIT
+	 *    is write-only, and always reads as zero...)
+	 */
+
+	if (new_ctrl & OMAP_RTC_CTRL_SPLIT)
+		dev_info(&pdev->dev, "split power mode\n");
+
+	if (reg != new_ctrl)
+		rtc_write(rtc, OMAP_RTC_CTRL_REG, new_ctrl);
+
+	/*
+	 * If we have the external clock then switch to it so we can keep
+	 * ticking across suspend.
+	 */
+	if (rtc->has_ext_clk) {
+		reg = rtc_read(rtc, OMAP_RTC_OSC_REG);
+		reg &= ~OMAP_RTC_OSC_OSC32K_GZ_DISABLE;
+		reg |= OMAP_RTC_OSC_32KCLK_EN | OMAP_RTC_OSC_SEL_32KCLK_SRC;
+		rtc_write(rtc, OMAP_RTC_OSC_REG, reg);
+	}
+
+	rtc->type->lock(rtc);
+
+	device_init_wakeup(&pdev->dev, true);
+
+	rtc->rtc = devm_rtc_allocate_device(&pdev->dev);
+	if (IS_ERR(rtc->rtc)) {
+		ret = PTR_ERR(rtc->rtc);
+		goto err;
+	}
+
+	rtc->rtc->ops = &omap_rtc_ops;
+	rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+	rtc->rtc->range_max = RTC_TIMESTAMP_END_2099;
+	omap_rtc_nvmem_config.priv = rtc;
+
+	/* handle periodic and alarm irqs */
+	ret = devm_request_irq(&pdev->dev, rtc->irq_timer, rtc_irq, 0,
+			dev_name(&rtc->rtc->dev), rtc);
+	if (ret)
+		goto err;
+
+	if (rtc->irq_timer != rtc->irq_alarm) {
+		ret = devm_request_irq(&pdev->dev, rtc->irq_alarm, rtc_irq, 0,
+				dev_name(&rtc->rtc->dev), rtc);
+		if (ret)
+			goto err;
+	}
+
+	/* Support ext_wakeup pinconf */
+	rtc_pinctrl_desc.name = dev_name(&pdev->dev);
+
+	rtc->pctldev = devm_pinctrl_register(&pdev->dev, &rtc_pinctrl_desc, rtc);
+	if (IS_ERR(rtc->pctldev)) {
+		dev_err(&pdev->dev, "Couldn't register pinctrl driver\n");
+		ret = PTR_ERR(rtc->pctldev);
+		goto err;
+	}
+
+	ret = devm_rtc_register_device(rtc->rtc);
+	if (ret)
+		goto err;
+
+	devm_rtc_nvmem_register(rtc->rtc, &omap_rtc_nvmem_config);
+
+	if (rtc->is_pmic_controller) {
+		if (!pm_power_off) {
+			omap_rtc_power_off_rtc = rtc;
+			pm_power_off = omap_rtc_power_off;
+		}
+	}
+
+	return 0;
+
+err:
+	clk_disable_unprepare(rtc->clk);
+	device_init_wakeup(&pdev->dev, false);
+	rtc->type->lock(rtc);
+	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+
+	return ret;
+}
+
+static int omap_rtc_remove(struct platform_device *pdev)
+{
+	struct omap_rtc *rtc = platform_get_drvdata(pdev);
+	u8 reg;
+
+	if (pm_power_off == omap_rtc_power_off &&
+			omap_rtc_power_off_rtc == rtc) {
+		pm_power_off = NULL;
+		omap_rtc_power_off_rtc = NULL;
+	}
+
+	device_init_wakeup(&pdev->dev, 0);
+
+	if (!IS_ERR(rtc->clk))
+		clk_disable_unprepare(rtc->clk);
+
+	rtc->type->unlock(rtc);
+	/* leave rtc running, but disable irqs */
+	rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
+
+	if (rtc->has_ext_clk) {
+		reg = rtc_read(rtc, OMAP_RTC_OSC_REG);
+		reg &= ~OMAP_RTC_OSC_SEL_32KCLK_SRC;
+		rtc_write(rtc, OMAP_RTC_OSC_REG, reg);
+	}
+
+	rtc->type->lock(rtc);
+
+	/* Disable the clock/module */
+	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static int __maybe_unused omap_rtc_suspend(struct device *dev)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+
+	rtc->interrupts_reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+
+	rtc->type->unlock(rtc);
+	/*
+	 * FIXME: the RTC alarm is not currently acting as a wakeup event
+	 * source on some platforms, and in fact this enable() call is just
+	 * saving a flag that's never used...
+	 */
+	if (device_may_wakeup(dev))
+		enable_irq_wake(rtc->irq_alarm);
+	else
+		rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
+	rtc->type->lock(rtc);
+
+	rtc->is_suspending = true;
+
+	return 0;
+}
+
+static int __maybe_unused omap_rtc_resume(struct device *dev)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+
+	rtc->type->unlock(rtc);
+	if (device_may_wakeup(dev))
+		disable_irq_wake(rtc->irq_alarm);
+	else
+		rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, rtc->interrupts_reg);
+	rtc->type->lock(rtc);
+
+	rtc->is_suspending = false;
+
+	return 0;
+}
+
+static int __maybe_unused omap_rtc_runtime_suspend(struct device *dev)
+{
+	struct omap_rtc *rtc = dev_get_drvdata(dev);
+
+	if (rtc->is_suspending && !rtc->has_ext_clk)
+		return -EBUSY;
+
+	return 0;
+}
+
+static const struct dev_pm_ops omap_rtc_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(omap_rtc_suspend, omap_rtc_resume)
+	SET_RUNTIME_PM_OPS(omap_rtc_runtime_suspend, NULL, NULL)
+};
+
+static void omap_rtc_shutdown(struct platform_device *pdev)
+{
+	struct omap_rtc *rtc = platform_get_drvdata(pdev);
+	u8 mask;
+
+	/*
+	 * Keep the ALARM interrupt enabled to allow the system to power up on
+	 * alarm events.
+	 */
+	rtc->type->unlock(rtc);
+	mask = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG);
+	mask &= OMAP_RTC_INTERRUPTS_IT_ALARM;
+	rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, mask);
+	rtc->type->lock(rtc);
+}
+
+static struct platform_driver omap_rtc_driver = {
+	.probe		= omap_rtc_probe,
+	.remove		= omap_rtc_remove,
+	.shutdown	= omap_rtc_shutdown,
+	.driver		= {
+		.name	= "omap_rtc",
+		.pm	= &omap_rtc_pm_ops,
+		.of_match_table = omap_rtc_of_match,
+	},
+	.id_table	= omap_rtc_id_table,
+};
+
+module_platform_driver(omap_rtc_driver);
+
+MODULE_AUTHOR("George G. Davis (and others)");
+MODULE_LICENSE("GPL");