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, 463 insertions, 0 deletions

diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c
new file mode 100644
index 000000000..cf8d909fa
--- /dev/null
+++ b/drivers/net/wireless/ti/wlcore/sdio.c
@@ -0,0 +1,463 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2009-2010 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.com>
+ */
+
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+#include <linux/platform_device.h>
+#include <linux/mmc/sdio.h>
+#include <linux/mmc/sdio_func.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
+#include <linux/gpio.h>
+#include <linux/pm_runtime.h>
+#include <linux/printk.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+
+#include "wlcore.h"
+#include "wl12xx_80211.h"
+#include "io.h"
+
+static bool dump;
+
+struct wl12xx_sdio_glue {
+	struct device *dev;
+	struct platform_device *core;
+};
+
+static const struct sdio_device_id wl1271_devices[] = {
+	{ SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271) },
+	{}
+};
+MODULE_DEVICE_TABLE(sdio, wl1271_devices);
+
+static void wl1271_sdio_set_block_size(struct device *child,
+				       unsigned int blksz)
+{
+	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
+	struct sdio_func *func = dev_to_sdio_func(glue->dev);
+
+	sdio_claim_host(func);
+	sdio_set_block_size(func, blksz);
+	sdio_release_host(func);
+}
+
+static int __must_check wl12xx_sdio_raw_read(struct device *child, int addr,
+					     void *buf, size_t len, bool fixed)
+{
+	int ret;
+	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
+	struct sdio_func *func = dev_to_sdio_func(glue->dev);
+
+	sdio_claim_host(func);
+
+	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
+		((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
+		dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
+			addr, ((u8 *)buf)[0]);
+	} else {
+		if (fixed)
+			ret = sdio_readsb(func, buf, addr, len);
+		else
+			ret = sdio_memcpy_fromio(func, buf, addr, len);
+
+		dev_dbg(child->parent, "sdio read 53 addr 0x%x, %zu bytes\n",
+			addr, len);
+	}
+
+	sdio_release_host(func);
+
+	if (WARN_ON(ret))
+		dev_err(child->parent, "sdio read failed (%d)\n", ret);
+
+	if (unlikely(dump)) {
+		printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
+		print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
+			       DUMP_PREFIX_OFFSET, 16, 1,
+			       buf, len, false);
+	}
+
+	return ret;
+}
+
+static int __must_check wl12xx_sdio_raw_write(struct device *child, int addr,
+					      void *buf, size_t len, bool fixed)
+{
+	int ret;
+	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
+	struct sdio_func *func = dev_to_sdio_func(glue->dev);
+
+	sdio_claim_host(func);
+
+	if (unlikely(dump)) {
+		printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
+		print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
+				DUMP_PREFIX_OFFSET, 16, 1,
+				buf, len, false);
+	}
+
+	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
+		sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
+		dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
+			addr, ((u8 *)buf)[0]);
+	} else {
+		dev_dbg(child->parent, "sdio write 53 addr 0x%x, %zu bytes\n",
+			addr, len);
+
+		if (fixed)
+			ret = sdio_writesb(func, addr, buf, len);
+		else
+			ret = sdio_memcpy_toio(func, addr, buf, len);
+	}
+
+	sdio_release_host(func);
+
+	if (WARN_ON(ret))
+		dev_err(child->parent, "sdio write failed (%d)\n", ret);
+
+	return ret;
+}
+
+static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
+{
+	int ret;
+	struct sdio_func *func = dev_to_sdio_func(glue->dev);
+	struct mmc_card *card = func->card;
+
+	ret = pm_runtime_resume_and_get(&card->dev);
+	if (ret < 0) {
+		dev_err(glue->dev, "%s: failed to get_sync(%d)\n",
+			__func__, ret);
+
+		return ret;
+	}
+
+	sdio_claim_host(func);
+	/*
+	 * To guarantee that the SDIO card is power cycled, as required to make
+	 * the FW programming to succeed, let's do a brute force HW reset.
+	 */
+	mmc_hw_reset(card);
+
+	sdio_enable_func(func);
+	sdio_release_host(func);
+
+	return 0;
+}
+
+static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
+{
+	struct sdio_func *func = dev_to_sdio_func(glue->dev);
+	struct mmc_card *card = func->card;
+
+	sdio_claim_host(func);
+	sdio_disable_func(func);
+	sdio_release_host(func);
+
+	/* Let runtime PM know the card is powered off */
+	pm_runtime_put(&card->dev);
+	return 0;
+}
+
+static int wl12xx_sdio_set_power(struct device *child, bool enable)
+{
+	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
+
+	if (enable)
+		return wl12xx_sdio_power_on(glue);
+	else
+		return wl12xx_sdio_power_off(glue);
+}
+
+static struct wl1271_if_operations sdio_ops = {
+	.read		= wl12xx_sdio_raw_read,
+	.write		= wl12xx_sdio_raw_write,
+	.power		= wl12xx_sdio_set_power,
+	.set_block_size = wl1271_sdio_set_block_size,
+};
+
+#ifdef CONFIG_OF
+
+static const struct wilink_family_data wl127x_data = {
+	.name = "wl127x",
+	.nvs_name = "ti-connectivity/wl127x-nvs.bin",
+};
+
+static const struct wilink_family_data wl128x_data = {
+	.name = "wl128x",
+	.nvs_name = "ti-connectivity/wl128x-nvs.bin",
+};
+
+static const struct wilink_family_data wl18xx_data = {
+	.name = "wl18xx",
+	.cfg_name = "ti-connectivity/wl18xx-conf.bin",
+	.nvs_name = "ti-connectivity/wl1271-nvs.bin",
+};
+
+static const struct of_device_id wlcore_sdio_of_match_table[] = {
+	{ .compatible = "ti,wl1271", .data = &wl127x_data },
+	{ .compatible = "ti,wl1273", .data = &wl127x_data },
+	{ .compatible = "ti,wl1281", .data = &wl128x_data },
+	{ .compatible = "ti,wl1283", .data = &wl128x_data },
+	{ .compatible = "ti,wl1285", .data = &wl128x_data },
+	{ .compatible = "ti,wl1801", .data = &wl18xx_data },
+	{ .compatible = "ti,wl1805", .data = &wl18xx_data },
+	{ .compatible = "ti,wl1807", .data = &wl18xx_data },
+	{ .compatible = "ti,wl1831", .data = &wl18xx_data },
+	{ .compatible = "ti,wl1835", .data = &wl18xx_data },
+	{ .compatible = "ti,wl1837", .data = &wl18xx_data },
+	{ }
+};
+
+static int wlcore_probe_of(struct device *dev, int *irq, int *wakeirq,
+			   struct wlcore_platdev_data *pdev_data)
+{
+	struct device_node *np = dev->of_node;
+	const struct of_device_id *of_id;
+
+	of_id = of_match_node(wlcore_sdio_of_match_table, np);
+	if (!of_id)
+		return -ENODEV;
+
+	pdev_data->family = of_id->data;
+
+	*irq = irq_of_parse_and_map(np, 0);
+	if (!*irq) {
+		dev_err(dev, "No irq in platform data\n");
+		return -EINVAL;
+	}
+
+	*wakeirq = irq_of_parse_and_map(np, 1);
+
+	/* optional clock frequency params */
+	of_property_read_u32(np, "ref-clock-frequency",
+			     &pdev_data->ref_clock_freq);
+	of_property_read_u32(np, "tcxo-clock-frequency",
+			     &pdev_data->tcxo_clock_freq);
+
+	return 0;
+}
+#else
+static int wlcore_probe_of(struct device *dev, int *irq, int *wakeirq,
+			   struct wlcore_platdev_data *pdev_data)
+{
+	return -ENODATA;
+}
+#endif
+
+static int wl1271_probe(struct sdio_func *func,
+				  const struct sdio_device_id *id)
+{
+	struct wlcore_platdev_data *pdev_data;
+	struct wl12xx_sdio_glue *glue;
+	struct resource res[2];
+	mmc_pm_flag_t mmcflags;
+	int ret = -ENOMEM;
+	int irq, wakeirq, num_irqs;
+	const char *chip_family;
+
+	/* We are only able to handle the wlan function */
+	if (func->num != 0x02)
+		return -ENODEV;
+
+	pdev_data = devm_kzalloc(&func->dev, sizeof(*pdev_data), GFP_KERNEL);
+	if (!pdev_data)
+		return -ENOMEM;
+
+	pdev_data->if_ops = &sdio_ops;
+
+	glue = devm_kzalloc(&func->dev, sizeof(*glue), GFP_KERNEL);
+	if (!glue)
+		return -ENOMEM;
+
+	glue->dev = &func->dev;
+
+	/* Grab access to FN0 for ELP reg. */
+	func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
+
+	/* Use block mode for transferring over one block size of data */
+	func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
+
+	ret = wlcore_probe_of(&func->dev, &irq, &wakeirq, pdev_data);
+	if (ret)
+		goto out;
+
+	/* if sdio can keep power while host is suspended, enable wow */
+	mmcflags = sdio_get_host_pm_caps(func);
+	dev_dbg(glue->dev, "sdio PM caps = 0x%x\n", mmcflags);
+
+	if (mmcflags & MMC_PM_KEEP_POWER)
+		pdev_data->pwr_in_suspend = true;
+
+	sdio_set_drvdata(func, glue);
+
+	/* Tell PM core that we don't need the card to be powered now */
+	pm_runtime_put_noidle(&func->dev);
+
+	/*
+	 * Due to a hardware bug, we can't differentiate wl18xx from
+	 * wl12xx, because both report the same device ID.  The only
+	 * way to differentiate is by checking the SDIO revision,
+	 * which is 3.00 on the wl18xx chips.
+	 */
+	if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00)
+		chip_family = "wl18xx";
+	else
+		chip_family = "wl12xx";
+
+	glue->core = platform_device_alloc(chip_family, PLATFORM_DEVID_AUTO);
+	if (!glue->core) {
+		dev_err(glue->dev, "can't allocate platform_device");
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	glue->core->dev.parent = &func->dev;
+
+	memset(res, 0x00, sizeof(res));
+
+	res[0].start = irq;
+	res[0].flags = IORESOURCE_IRQ |
+		       irqd_get_trigger_type(irq_get_irq_data(irq));
+	res[0].name = "irq";
+
+
+	if (wakeirq > 0) {
+		res[1].start = wakeirq;
+		res[1].flags = IORESOURCE_IRQ |
+			       irqd_get_trigger_type(irq_get_irq_data(wakeirq));
+		res[1].name = "wakeirq";
+		num_irqs = 2;
+	} else {
+		num_irqs = 1;
+	}
+	ret = platform_device_add_resources(glue->core, res, num_irqs);
+	if (ret) {
+		dev_err(glue->dev, "can't add resources\n");
+		goto out_dev_put;
+	}
+
+	ret = platform_device_add_data(glue->core, pdev_data,
+				       sizeof(*pdev_data));
+	if (ret) {
+		dev_err(glue->dev, "can't add platform data\n");
+		goto out_dev_put;
+	}
+
+	ret = platform_device_add(glue->core);
+	if (ret) {
+		dev_err(glue->dev, "can't add platform device\n");
+		goto out_dev_put;
+	}
+	return 0;
+
+out_dev_put:
+	platform_device_put(glue->core);
+
+out:
+	return ret;
+}
+
+static void wl1271_remove(struct sdio_func *func)
+{
+	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
+
+	/* Undo decrement done above in wl1271_probe */
+	pm_runtime_get_noresume(&func->dev);
+
+	platform_device_unregister(glue->core);
+}
+
+#ifdef CONFIG_PM
+static int wl1271_suspend(struct device *dev)
+{
+	/* Tell MMC/SDIO core it's OK to power down the card
+	 * (if it isn't already), but not to remove it completely */
+	struct sdio_func *func = dev_to_sdio_func(dev);
+	struct wl12xx_sdio_glue *glue = sdio_get_drvdata(func);
+	struct wl1271 *wl = platform_get_drvdata(glue->core);
+	mmc_pm_flag_t sdio_flags;
+	int ret = 0;
+
+	if (!wl) {
+		dev_err(dev, "no wilink module was probed\n");
+		goto out;
+	}
+
+	dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n",
+		wl->wow_enabled);
+
+	/* check whether sdio should keep power */
+	if (wl->wow_enabled) {
+		sdio_flags = sdio_get_host_pm_caps(func);
+
+		if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
+			dev_err(dev, "can't keep power while host "
+				     "is suspended\n");
+			ret = -EINVAL;
+			goto out;
+		}
+
+		/* keep power while host suspended */
+		ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+		if (ret) {
+			dev_err(dev, "error while trying to keep power\n");
+			goto out;
+		}
+	}
+out:
+	return ret;
+}
+
+static int wl1271_resume(struct device *dev)
+{
+	dev_dbg(dev, "wl1271 resume\n");
+
+	return 0;
+}
+
+static const struct dev_pm_ops wl1271_sdio_pm_ops = {
+	.suspend	= wl1271_suspend,
+	.resume		= wl1271_resume,
+};
+#endif
+
+static struct sdio_driver wl1271_sdio_driver = {
+	.name		= "wl1271_sdio",
+	.id_table	= wl1271_devices,
+	.probe		= wl1271_probe,
+	.remove		= wl1271_remove,
+#ifdef CONFIG_PM
+	.drv = {
+		.pm = &wl1271_sdio_pm_ops,
+	},
+#endif
+};
+
+static int __init wl1271_init(void)
+{
+	return sdio_register_driver(&wl1271_sdio_driver);
+}
+
+static void __exit wl1271_exit(void)
+{
+	sdio_unregister_driver(&wl1271_sdio_driver);
+}
+
+module_init(wl1271_init);
+module_exit(wl1271_exit);
+
+module_param(dump, bool, 0600);
+MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
+MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");