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From: Jerome Pouiller <Jerome.Pouiller@silabs.com>
To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Cc: devel@driverdev.osuosl.org, devicetree@vger.kernel.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	"David S . Miller" <davem@davemloft.net>,
	Kalle Valo <kvalo@codeaurora.org>
Subject: [PATCH 22/23] wfx: remove from the staging area
Date: Mon, 12 Oct 2020 12:46:47 +0200
Message-ID: <20201012104648.985256-23-Jerome.Pouiller@silabs.com> (raw)
In-Reply-To: <20201012104648.985256-1-Jerome.Pouiller@silabs.com>

From: Jérôme Pouiller <jerome.pouiller@silabs.com>

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
 .../bindings/net/wireless/silabs,wfx.yaml     | 125 ---
 drivers/staging/wfx/Kconfig                   |   8 -
 drivers/staging/wfx/Makefile                  |  25 -
 drivers/staging/wfx/bh.c                      | 333 --------
 drivers/staging/wfx/bh.h                      |  33 -
 drivers/staging/wfx/bus.h                     |  38 -
 drivers/staging/wfx/bus_sdio.c                | 269 ------
 drivers/staging/wfx/bus_spi.c                 | 271 ------
 drivers/staging/wfx/data_rx.c                 |  93 --
 drivers/staging/wfx/data_rx.h                 |  18 -
 drivers/staging/wfx/data_tx.c                 | 585 -------------
 drivers/staging/wfx/data_tx.h                 |  67 --
 drivers/staging/wfx/debug.c                   | 359 --------
 drivers/staging/wfx/debug.h                   |  19 -
 drivers/staging/wfx/fwio.c                    | 405 ---------
 drivers/staging/wfx/fwio.h                    |  15 -
 drivers/staging/wfx/hif_api_cmd.h             | 553 ------------
 drivers/staging/wfx/hif_api_general.h         | 267 ------
 drivers/staging/wfx/hif_api_mib.h             | 343 --------
 drivers/staging/wfx/hif_rx.c                  | 415 ---------
 drivers/staging/wfx/hif_rx.h                  |  18 -
 drivers/staging/wfx/hif_tx.c                  | 523 ------------
 drivers/staging/wfx/hif_tx.h                  |  60 --
 drivers/staging/wfx/hif_tx_mib.c              | 324 -------
 drivers/staging/wfx/hif_tx_mib.h              |  49 --
 drivers/staging/wfx/hwio.c                    | 352 --------
 drivers/staging/wfx/hwio.h                    |  75 --
 drivers/staging/wfx/key.c                     | 241 ------
 drivers/staging/wfx/key.h                     |  20 -
 drivers/staging/wfx/main.c                    | 490 -----------
 drivers/staging/wfx/main.h                    |  44 -
 drivers/staging/wfx/queue.c                   | 304 -------
 drivers/staging/wfx/queue.h                   |  45 -
 drivers/staging/wfx/scan.c                    | 132 ---
 drivers/staging/wfx/scan.h                    |  22 -
 drivers/staging/wfx/sta.c                     | 807 ------------------
 drivers/staging/wfx/sta.h                     |  73 --
 drivers/staging/wfx/traces.h                  | 501 -----------
 drivers/staging/wfx/wfx.h                     | 166 ----
 39 files changed, 8487 deletions(-)
 delete mode 100644 drivers/staging/wfx/Documentation/devicetree/bindings/net/wireless/silabs,wfx.yaml
 delete mode 100644 drivers/staging/wfx/Kconfig
 delete mode 100644 drivers/staging/wfx/Makefile
 delete mode 100644 drivers/staging/wfx/bh.c
 delete mode 100644 drivers/staging/wfx/bh.h
 delete mode 100644 drivers/staging/wfx/bus.h
 delete mode 100644 drivers/staging/wfx/bus_sdio.c
 delete mode 100644 drivers/staging/wfx/bus_spi.c
 delete mode 100644 drivers/staging/wfx/data_rx.c
 delete mode 100644 drivers/staging/wfx/data_rx.h
 delete mode 100644 drivers/staging/wfx/data_tx.c
 delete mode 100644 drivers/staging/wfx/data_tx.h
 delete mode 100644 drivers/staging/wfx/debug.c
 delete mode 100644 drivers/staging/wfx/debug.h
 delete mode 100644 drivers/staging/wfx/fwio.c
 delete mode 100644 drivers/staging/wfx/fwio.h
 delete mode 100644 drivers/staging/wfx/hif_api_cmd.h
 delete mode 100644 drivers/staging/wfx/hif_api_general.h
 delete mode 100644 drivers/staging/wfx/hif_api_mib.h
 delete mode 100644 drivers/staging/wfx/hif_rx.c
 delete mode 100644 drivers/staging/wfx/hif_rx.h
 delete mode 100644 drivers/staging/wfx/hif_tx.c
 delete mode 100644 drivers/staging/wfx/hif_tx.h
 delete mode 100644 drivers/staging/wfx/hif_tx_mib.c
 delete mode 100644 drivers/staging/wfx/hif_tx_mib.h
 delete mode 100644 drivers/staging/wfx/hwio.c
 delete mode 100644 drivers/staging/wfx/hwio.h
 delete mode 100644 drivers/staging/wfx/key.c
 delete mode 100644 drivers/staging/wfx/key.h
 delete mode 100644 drivers/staging/wfx/main.c
 delete mode 100644 drivers/staging/wfx/main.h
 delete mode 100644 drivers/staging/wfx/queue.c
 delete mode 100644 drivers/staging/wfx/queue.h
 delete mode 100644 drivers/staging/wfx/scan.c
 delete mode 100644 drivers/staging/wfx/scan.h
 delete mode 100644 drivers/staging/wfx/sta.c
 delete mode 100644 drivers/staging/wfx/sta.h
 delete mode 100644 drivers/staging/wfx/traces.h
 delete mode 100644 drivers/staging/wfx/wfx.h

diff --git a/drivers/staging/wfx/Documentation/devicetree/bindings/net/wireless/silabs,wfx.yaml b/drivers/staging/wfx/Documentation/devicetree/bindings/net/wireless/silabs,wfx.yaml
deleted file mode 100644
index 43b5630c0407..000000000000
--- a/drivers/staging/wfx/Documentation/devicetree/bindings/net/wireless/silabs,wfx.yaml
+++ /dev/null
@@ -1,125 +0,0 @@
-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-# Copyright (c) 2020, Silicon Laboratories, Inc.
-%YAML 1.2
----
-
-$id: http://devicetree.org/schemas/net/wireless/silabs,wfx.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Silicon Labs WFxxx devicetree bindings
-
-maintainers:
-  - Jérôme Pouiller <jerome.pouiller@silabs.com>
-
-description:
-  The WFxxx chip series can be connected via SPI or via SDIO.
-
-  For SDIO':'
-
-    The driver is able to detect a WFxxx chip on SDIO bus by matching its Vendor
-    ID and Product ID. However, driver will only provide limited features in
-    this case. Thus declaring WFxxx chip in device tree is recommended (and may
-    become mandatory in the future).
-
-    In addition, it is recommended to declare a mmc-pwrseq on SDIO host above
-    WFx. Without it, you may encounter issues with warm boot. The mmc-pwrseq
-    should be compatible with mmc-pwrseq-simple. Please consult
-    Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.txt for more
-    information.
-
-  For SPI':'
-
-    In add of the properties below, please consult
-    Documentation/devicetree/bindings/spi/spi-controller.yaml for optional SPI
-    related properties.
-
-  Note that in add of the properties below, the WFx driver also supports
-  `mac-address` and `local-mac-address` as described in
-  Documentation/devicetree/bindings/net/ethernet.txt
-
-properties:
-  compatible:
-    const: silabs,wf200
-  reg:
-    description:
-      When used on SDIO bus, <reg> must be set to 1. When used on SPI bus, it is
-      the chip select address of the device as defined in the SPI devices
-      bindings.
-    maxItems: 1
-  spi-max-frequency:
-    description: (SPI only) Maximum SPI clocking speed of device in Hz.
-    maxItems: 1
-  interrupts:
-    description: The interrupt line. Triggers IRQ_TYPE_LEVEL_HIGH and
-      IRQ_TYPE_EDGE_RISING are both supported by the chip and the driver. When
-      SPI is used, this property is required. When SDIO is used, the "in-band"
-      interrupt provided by the SDIO bus is used unless an interrupt is defined
-      in the Device Tree.
-    maxItems: 1
-  reset-gpios:
-    description: (SPI only) Phandle of gpio that will be used to reset chip
-      during probe. Without this property, you may encounter issues with warm
-      boot. (For legacy purpose, the gpio in inverted when compatible ==
-      "silabs,wfx-spi")
-
-      For SDIO, the reset gpio should declared using a mmc-pwrseq.
-    maxItems: 1
-  wakeup-gpios:
-    description: Phandle of gpio that will be used to wake-up chip. Without this
-      property, driver will disable most of power saving features.
-    maxItems: 1
-  config-file:
-    description: Use an alternative file as PDS. Default is `wf200.pds`. Only
-      necessary for development/debug purpose.
-    maxItems: 1
-
-required:
-  - compatible
-  - reg
-
-examples:
-  - |
-    #include <dt-bindings/gpio/gpio.h>
-    #include <dt-bindings/interrupt-controller/irq.h>
-
-    spi0 {
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        wfx@0 {
-            compatible = "silabs,wf200";
-            pinctrl-names = "default";
-            pinctrl-0 = <&wfx_irq &wfx_gpios>;
-            reg = <0>;
-            interrupts-extended = <&gpio 16 IRQ_TYPE_EDGE_RISING>;
-            wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
-            reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
-            spi-max-frequency = <42000000>;
-        };
-    };
-
-  - |
-    #include <dt-bindings/gpio/gpio.h>
-    #include <dt-bindings/interrupt-controller/irq.h>
-
-    wfx_pwrseq: wfx_pwrseq {
-        compatible = "mmc-pwrseq-simple";
-        pinctrl-names = "default";
-        pinctrl-0 = <&wfx_reset>;
-        reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
-    };
-
-    mmc0 {
-        mmc-pwrseq = <&wfx_pwrseq>;
-        #address-cells = <1>;
-        #size-cells = <0>;
-
-        mmc@1 {
-            compatible = "silabs,wf200";
-            pinctrl-names = "default";
-            pinctrl-0 = <&wfx_wakeup>;
-            reg = <1>;
-            wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
-        };
-    };
-...
diff --git a/drivers/staging/wfx/Kconfig b/drivers/staging/wfx/Kconfig
deleted file mode 100644
index 83ee4d0ca8c6..000000000000
--- a/drivers/staging/wfx/Kconfig
+++ /dev/null
@@ -1,8 +0,0 @@
-config WFX
-	tristate "Silicon Labs wireless chips WF200 and further"
-	depends on MAC80211
-	depends on MMC || !MMC # do not allow WFX=y if MMC=m
-	depends on (SPI || MMC)
-	help
-	  This is a driver for Silicons Labs WFxxx series (WF200 and further)
-	  chipsets. This chip can be found on SPI or SDIO buses.
diff --git a/drivers/staging/wfx/Makefile b/drivers/staging/wfx/Makefile
deleted file mode 100644
index 0e0cc982ceab..000000000000
--- a/drivers/staging/wfx/Makefile
+++ /dev/null
@@ -1,25 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-# Necessary for CREATE_TRACE_POINTS
-CFLAGS_debug.o = -I$(src)
-
-wfx-y := \
-	bh.o \
-	hwio.o \
-	fwio.o \
-	hif_tx_mib.o \
-	hif_tx.o \
-	hif_rx.o \
-	queue.o \
-	data_tx.o \
-	data_rx.o \
-	scan.o \
-	sta.o \
-	key.o \
-	main.o \
-	sta.o \
-	debug.o
-wfx-$(CONFIG_SPI) += bus_spi.o
-wfx-$(subst m,y,$(CONFIG_MMC)) += bus_sdio.o
-
-obj-$(CONFIG_WFX) += wfx.o
diff --git a/drivers/staging/wfx/bh.c b/drivers/staging/wfx/bh.c
deleted file mode 100644
index 2ffa587aefaa..000000000000
--- a/drivers/staging/wfx/bh.c
+++ /dev/null
@@ -1,333 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Interrupt bottom half (BH).
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/gpio/consumer.h>
-#include <net/mac80211.h>
-
-#include "bh.h"
-#include "wfx.h"
-#include "hwio.h"
-#include "traces.h"
-#include "hif_rx.h"
-#include "hif_api_cmd.h"
-
-static void device_wakeup(struct wfx_dev *wdev)
-{
-	int max_retry = 3;
-
-	if (!wdev->pdata.gpio_wakeup)
-		return;
-	if (gpiod_get_value_cansleep(wdev->pdata.gpio_wakeup) >= 0)
-		return;
-
-	if (wfx_api_older_than(wdev, 1, 4)) {
-		gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);
-		if (!completion_done(&wdev->hif.ctrl_ready))
-			usleep_range(2000, 2500);
-		return;
-	}
-	for (;;) {
-		gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);
-		// completion.h does not provide any function to wait
-		// completion without consume it (a kind of
-		// wait_for_completion_done_timeout()). So we have to emulate
-		// it.
-		if (wait_for_completion_timeout(&wdev->hif.ctrl_ready,
-						msecs_to_jiffies(2))) {
-			complete(&wdev->hif.ctrl_ready);
-			return;
-		} else if (max_retry-- > 0) {
-			// Older firmwares have a race in sleep/wake-up process.
-			// Redo the process is sufficient to unfreeze the
-			// chip.
-			dev_err(wdev->dev, "timeout while wake up chip\n");
-			gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 0);
-			usleep_range(2000, 2500);
-		} else {
-			dev_err(wdev->dev, "max wake-up retries reached\n");
-			return;
-		}
-	}
-}
-
-static void device_release(struct wfx_dev *wdev)
-{
-	if (!wdev->pdata.gpio_wakeup)
-		return;
-
-	gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 0);
-}
-
-static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf)
-{
-	struct sk_buff *skb;
-	struct hif_msg *hif;
-	size_t alloc_len;
-	size_t computed_len;
-	int release_count;
-	int piggyback = 0;
-
-	WARN(read_len > round_down(0xFFF, 2) * sizeof(u16),
-	     "%s: request exceed WFx capability", __func__);
-
-	// Add 2 to take into account piggyback size
-	alloc_len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, read_len + 2);
-	skb = dev_alloc_skb(alloc_len);
-	if (!skb)
-		return -ENOMEM;
-
-	if (wfx_data_read(wdev, skb->data, alloc_len))
-		goto err;
-
-	piggyback = le16_to_cpup((__le16 *)(skb->data + alloc_len - 2));
-	_trace_piggyback(piggyback, false);
-
-	hif = (struct hif_msg *)skb->data;
-	WARN(hif->encrypted & 0x3, "encryption is unsupported");
-	if (WARN(read_len < sizeof(struct hif_msg), "corrupted read"))
-		goto err;
-	computed_len = le16_to_cpu(hif->len);
-	computed_len = round_up(computed_len, 2);
-	if (computed_len != read_len) {
-		dev_err(wdev->dev, "inconsistent message length: %zu != %zu\n",
-			computed_len, read_len);
-		print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET, 16, 1,
-			       hif, read_len, true);
-		goto err;
-	}
-
-	if (!(hif->id & HIF_ID_IS_INDICATION)) {
-		(*is_cnf)++;
-		if (hif->id == HIF_CNF_ID_MULTI_TRANSMIT)
-			release_count = ((struct hif_cnf_multi_transmit *)hif->body)->num_tx_confs;
-		else
-			release_count = 1;
-		WARN(wdev->hif.tx_buffers_used < release_count, "corrupted buffer counter");
-		wdev->hif.tx_buffers_used -= release_count;
-	}
-	_trace_hif_recv(hif, wdev->hif.tx_buffers_used);
-
-	if (hif->id != HIF_IND_ID_EXCEPTION && hif->id != HIF_IND_ID_ERROR) {
-		if (hif->seqnum != wdev->hif.rx_seqnum)
-			dev_warn(wdev->dev, "wrong message sequence: %d != %d\n",
-				 hif->seqnum, wdev->hif.rx_seqnum);
-		wdev->hif.rx_seqnum = (hif->seqnum + 1) % (HIF_COUNTER_MAX + 1);
-	}
-
-	skb_put(skb, le16_to_cpu(hif->len));
-	// wfx_handle_rx takes care on SKB livetime
-	wfx_handle_rx(wdev, skb);
-	if (!wdev->hif.tx_buffers_used)
-		wake_up(&wdev->hif.tx_buffers_empty);
-
-	return piggyback;
-
-err:
-	if (skb)
-		dev_kfree_skb(skb);
-	return -EIO;
-}
-
-static int bh_work_rx(struct wfx_dev *wdev, int max_msg, int *num_cnf)
-{
-	size_t len;
-	int i;
-	int ctrl_reg, piggyback;
-
-	piggyback = 0;
-	for (i = 0; i < max_msg; i++) {
-		if (piggyback & CTRL_NEXT_LEN_MASK)
-			ctrl_reg = piggyback;
-		else if (try_wait_for_completion(&wdev->hif.ctrl_ready))
-			ctrl_reg = atomic_xchg(&wdev->hif.ctrl_reg, 0);
-		else
-			ctrl_reg = 0;
-		if (!(ctrl_reg & CTRL_NEXT_LEN_MASK))
-			return i;
-		// ctrl_reg units are 16bits words
-		len = (ctrl_reg & CTRL_NEXT_LEN_MASK) * 2;
-		piggyback = rx_helper(wdev, len, num_cnf);
-		if (piggyback < 0)
-			return i;
-		if (!(piggyback & CTRL_WLAN_READY))
-			dev_err(wdev->dev, "unexpected piggyback value: ready bit not set: %04x\n",
-				piggyback);
-	}
-	if (piggyback & CTRL_NEXT_LEN_MASK) {
-		ctrl_reg = atomic_xchg(&wdev->hif.ctrl_reg, piggyback);
-		complete(&wdev->hif.ctrl_ready);
-		if (ctrl_reg)
-			dev_err(wdev->dev, "unexpected IRQ happened: %04x/%04x\n",
-				ctrl_reg, piggyback);
-	}
-	return i;
-}
-
-static void tx_helper(struct wfx_dev *wdev, struct hif_msg *hif)
-{
-	int ret;
-	void *data;
-	bool is_encrypted = false;
-	size_t len = le16_to_cpu(hif->len);
-
-	WARN(len < sizeof(*hif), "try to send corrupted data");
-
-	hif->seqnum = wdev->hif.tx_seqnum;
-	wdev->hif.tx_seqnum = (wdev->hif.tx_seqnum + 1) % (HIF_COUNTER_MAX + 1);
-
-	data = hif;
-	WARN(len > wdev->hw_caps.size_inp_ch_buf,
-	     "%s: request exceed WFx capability: %zu > %d\n", __func__,
-	     len, wdev->hw_caps.size_inp_ch_buf);
-	len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, len);
-	ret = wfx_data_write(wdev, data, len);
-	if (ret)
-		goto end;
-
-	wdev->hif.tx_buffers_used++;
-	_trace_hif_send(hif, wdev->hif.tx_buffers_used);
-end:
-	if (is_encrypted)
-		kfree(data);
-}
-
-static int bh_work_tx(struct wfx_dev *wdev, int max_msg)
-{
-	struct hif_msg *hif;
-	int i;
-
-	for (i = 0; i < max_msg; i++) {
-		hif = NULL;
-		if (wdev->hif.tx_buffers_used < wdev->hw_caps.num_inp_ch_bufs) {
-			if (try_wait_for_completion(&wdev->hif_cmd.ready)) {
-				WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error");
-				hif = wdev->hif_cmd.buf_send;
-			} else {
-				hif = wfx_tx_queues_get(wdev);
-			}
-		}
-		if (!hif)
-			return i;
-		tx_helper(wdev, hif);
-	}
-	return i;
-}
-
-/* In SDIO mode, it is necessary to make an access to a register to acknowledge
- * last received message. It could be possible to restrict this acknowledge to
- * SDIO mode and only if last operation was rx.
- */
-static void ack_sdio_data(struct wfx_dev *wdev)
-{
-	u32 cfg_reg;
-
-	config_reg_read(wdev, &cfg_reg);
-	if (cfg_reg & 0xFF) {
-		dev_warn(wdev->dev, "chip reports errors: %02x\n",
-			 cfg_reg & 0xFF);
-		config_reg_write_bits(wdev, 0xFF, 0x00);
-	}
-}
-
-static void bh_work(struct work_struct *work)
-{
-	struct wfx_dev *wdev = container_of(work, struct wfx_dev, hif.bh);
-	int stats_req = 0, stats_cnf = 0, stats_ind = 0;
-	bool release_chip = false, last_op_is_rx = false;
-	int num_tx, num_rx;
-
-	device_wakeup(wdev);
-	do {
-		num_tx = bh_work_tx(wdev, 32);
-		stats_req += num_tx;
-		if (num_tx)
-			last_op_is_rx = false;
-		num_rx = bh_work_rx(wdev, 32, &stats_cnf);
-		stats_ind += num_rx;
-		if (num_rx)
-			last_op_is_rx = true;
-	} while (num_rx || num_tx);
-	stats_ind -= stats_cnf;
-
-	if (last_op_is_rx)
-		ack_sdio_data(wdev);
-	if (!wdev->hif.tx_buffers_used && !work_pending(work)) {
-		device_release(wdev);
-		release_chip = true;
-	}
-	_trace_bh_stats(stats_ind, stats_req, stats_cnf,
-			wdev->hif.tx_buffers_used, release_chip);
-}
-
-/*
- * An IRQ from chip did occur
- */
-void wfx_bh_request_rx(struct wfx_dev *wdev)
-{
-	u32 cur, prev;
-
-	control_reg_read(wdev, &cur);
-	prev = atomic_xchg(&wdev->hif.ctrl_reg, cur);
-	complete(&wdev->hif.ctrl_ready);
-	queue_work(system_highpri_wq, &wdev->hif.bh);
-
-	if (!(cur & CTRL_NEXT_LEN_MASK))
-		dev_err(wdev->dev, "unexpected control register value: length field is 0: %04x\n",
-			cur);
-	if (prev != 0)
-		dev_err(wdev->dev, "received IRQ but previous data was not (yet) read: %04x/%04x\n",
-			prev, cur);
-}
-
-/*
- * Driver want to send data
- */
-void wfx_bh_request_tx(struct wfx_dev *wdev)
-{
-	queue_work(system_highpri_wq, &wdev->hif.bh);
-}
-
-/*
- * If IRQ is not available, this function allow to manually poll the control
- * register and simulate an IRQ ahen an event happened.
- *
- * Note that the device has a bug: If an IRQ raise while host read control
- * register, the IRQ is lost. So, use this function carefully (only duing
- * device initialisation).
- */
-void wfx_bh_poll_irq(struct wfx_dev *wdev)
-{
-	ktime_t now, start;
-	u32 reg;
-
-	WARN(!wdev->poll_irq, "unexpected IRQ polling can mask IRQ");
-	start = ktime_get();
-	for (;;) {
-		control_reg_read(wdev, &reg);
-		now = ktime_get();
-		if (reg & 0xFFF)
-			break;
-		if (ktime_after(now, ktime_add_ms(start, 1000))) {
-			dev_err(wdev->dev, "time out while polling control register\n");
-			return;
-		}
-		udelay(200);
-	}
-	wfx_bh_request_rx(wdev);
-}
-
-void wfx_bh_register(struct wfx_dev *wdev)
-{
-	INIT_WORK(&wdev->hif.bh, bh_work);
-	init_completion(&wdev->hif.ctrl_ready);
-	init_waitqueue_head(&wdev->hif.tx_buffers_empty);
-}
-
-void wfx_bh_unregister(struct wfx_dev *wdev)
-{
-	flush_work(&wdev->hif.bh);
-}
diff --git a/drivers/staging/wfx/bh.h b/drivers/staging/wfx/bh.h
deleted file mode 100644
index 78c49329e22a..000000000000
--- a/drivers/staging/wfx/bh.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Interrupt bottom half.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_BH_H
-#define WFX_BH_H
-
-#include <linux/atomic.h>
-#include <linux/wait.h>
-#include <linux/workqueue.h>
-
-struct wfx_dev;
-
-struct wfx_hif {
-	struct work_struct bh;
-	struct completion ctrl_ready;
-	wait_queue_head_t tx_buffers_empty;
-	atomic_t ctrl_reg;
-	int rx_seqnum;
-	int tx_seqnum;
-	int tx_buffers_used;
-};
-
-void wfx_bh_register(struct wfx_dev *wdev);
-void wfx_bh_unregister(struct wfx_dev *wdev);
-void wfx_bh_request_rx(struct wfx_dev *wdev);
-void wfx_bh_request_tx(struct wfx_dev *wdev);
-void wfx_bh_poll_irq(struct wfx_dev *wdev);
-
-#endif /* WFX_BH_H */
diff --git a/drivers/staging/wfx/bus.h b/drivers/staging/wfx/bus.h
deleted file mode 100644
index ca04b3da6204..000000000000
--- a/drivers/staging/wfx/bus.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Common bus abstraction layer.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_BUS_H
-#define WFX_BUS_H
-
-#include <linux/mmc/sdio_func.h>
-#include <linux/spi/spi.h>
-
-#define WFX_REG_CONFIG        0x0
-#define WFX_REG_CONTROL       0x1
-#define WFX_REG_IN_OUT_QUEUE  0x2
-#define WFX_REG_AHB_DPORT     0x3
-#define WFX_REG_BASE_ADDR     0x4
-#define WFX_REG_SRAM_DPORT    0x5
-#define WFX_REG_SET_GEN_R_W   0x6
-#define WFX_REG_FRAME_OUT     0x7
-
-struct hwbus_ops {
-	int (*copy_from_io)(void *bus_priv, unsigned int addr,
-			    void *dst, size_t count);
-	int (*copy_to_io)(void *bus_priv, unsigned int addr,
-			  const void *src, size_t count);
-	int (*irq_subscribe)(void *bus_priv);
-	int (*irq_unsubscribe)(void *bus_priv);
-	void (*lock)(void *bus_priv);
-	void (*unlock)(void *bus_priv);
-	size_t (*align_size)(void *bus_priv, size_t size);
-};
-
-extern struct sdio_driver wfx_sdio_driver;
-extern struct spi_driver wfx_spi_driver;
-
-#endif
diff --git a/drivers/staging/wfx/bus_sdio.c b/drivers/staging/wfx/bus_sdio.c
deleted file mode 100644
index e06d7e1ebe9c..000000000000
--- a/drivers/staging/wfx/bus_sdio.c
+++ /dev/null
@@ -1,269 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * SDIO interface.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/module.h>
-#include <linux/mmc/sdio.h>
-#include <linux/mmc/sdio_func.h>
-#include <linux/mmc/card.h>
-#include <linux/interrupt.h>
-#include <linux/of_irq.h>
-#include <linux/irq.h>
-
-#include "bus.h"
-#include "wfx.h"
-#include "hwio.h"
-#include "main.h"
-#include "bh.h"
-
-static const struct wfx_platform_data wfx_sdio_pdata = {
-	.file_fw = "wfm_wf200",
-	.file_pds = "wf200.pds",
-};
-
-struct wfx_sdio_priv {
-	struct sdio_func *func;
-	struct wfx_dev *core;
-	u8 buf_id_tx;
-	u8 buf_id_rx;
-	int of_irq;
-};
-
-static int wfx_sdio_copy_from_io(void *priv, unsigned int reg_id,
-				 void *dst, size_t count)
-{
-	struct wfx_sdio_priv *bus = priv;
-	unsigned int sdio_addr = reg_id << 2;
-	int ret;
-
-	WARN(reg_id > 7, "chip only has 7 registers");
-	WARN(((uintptr_t)dst) & 3, "unaligned buffer size");
-	WARN(count & 3, "unaligned buffer address");
-
-	/* Use queue mode buffers */
-	if (reg_id == WFX_REG_IN_OUT_QUEUE)
-		sdio_addr |= (bus->buf_id_rx + 1) << 7;
-	ret = sdio_memcpy_fromio(bus->func, dst, sdio_addr, count);
-	if (!ret && reg_id == WFX_REG_IN_OUT_QUEUE)
-		bus->buf_id_rx = (bus->buf_id_rx + 1) % 4;
-
-	return ret;
-}
-
-static int wfx_sdio_copy_to_io(void *priv, unsigned int reg_id,
-			       const void *src, size_t count)
-{
-	struct wfx_sdio_priv *bus = priv;
-	unsigned int sdio_addr = reg_id << 2;
-	int ret;
-
-	WARN(reg_id > 7, "chip only has 7 registers");
-	WARN(((uintptr_t)src) & 3, "unaligned buffer size");
-	WARN(count & 3, "unaligned buffer address");
-
-	/* Use queue mode buffers */
-	if (reg_id == WFX_REG_IN_OUT_QUEUE)
-		sdio_addr |= bus->buf_id_tx << 7;
-	// FIXME: discards 'const' qualifier for src
-	ret = sdio_memcpy_toio(bus->func, sdio_addr, (void *)src, count);
-	if (!ret && reg_id == WFX_REG_IN_OUT_QUEUE)
-		bus->buf_id_tx = (bus->buf_id_tx + 1) % 32;
-
-	return ret;
-}
-
-static void wfx_sdio_lock(void *priv)
-{
-	struct wfx_sdio_priv *bus = priv;
-
-	sdio_claim_host(bus->func);
-}
-
-static void wfx_sdio_unlock(void *priv)
-{
-	struct wfx_sdio_priv *bus = priv;
-
-	sdio_release_host(bus->func);
-}
-
-static void wfx_sdio_irq_handler(struct sdio_func *func)
-{
-	struct wfx_sdio_priv *bus = sdio_get_drvdata(func);
-
-	wfx_bh_request_rx(bus->core);
-}
-
-static irqreturn_t wfx_sdio_irq_handler_ext(int irq, void *priv)
-{
-	struct wfx_sdio_priv *bus = priv;
-
-	sdio_claim_host(bus->func);
-	wfx_bh_request_rx(bus->core);
-	sdio_release_host(bus->func);
-	return IRQ_HANDLED;
-}
-
-static int wfx_sdio_irq_subscribe(void *priv)
-{
-	struct wfx_sdio_priv *bus = priv;
-	u32 flags;
-	int ret;
-	u8 cccr;
-
-	if (!bus->of_irq) {
-		sdio_claim_host(bus->func);
-		ret = sdio_claim_irq(bus->func, wfx_sdio_irq_handler);
-		sdio_release_host(bus->func);
-		return ret;
-	}
-
-	sdio_claim_host(bus->func);
-	cccr = sdio_f0_readb(bus->func, SDIO_CCCR_IENx, NULL);
-	cccr |= BIT(0);
-	cccr |= BIT(bus->func->num);
-	sdio_f0_writeb(bus->func, cccr, SDIO_CCCR_IENx, NULL);
-	sdio_release_host(bus->func);
-	flags = irq_get_trigger_type(bus->of_irq);
-	if (!flags)
-		flags = IRQF_TRIGGER_HIGH;
-	flags |= IRQF_ONESHOT;
-	return devm_request_threaded_irq(&bus->func->dev, bus->of_irq, NULL,
-					 wfx_sdio_irq_handler_ext, flags,
-					 "wfx", bus);
-}
-
-static int wfx_sdio_irq_unsubscribe(void *priv)
-{
-	struct wfx_sdio_priv *bus = priv;
-	int ret;
-
-	if (bus->of_irq)
-		devm_free_irq(&bus->func->dev, bus->of_irq, bus);
-	sdio_claim_host(bus->func);
-	ret = sdio_release_irq(bus->func);
-	sdio_release_host(bus->func);
-	return ret;
-}
-
-static size_t wfx_sdio_align_size(void *priv, size_t size)
-{
-	struct wfx_sdio_priv *bus = priv;
-
-	return sdio_align_size(bus->func, size);
-}
-
-static const struct hwbus_ops wfx_sdio_hwbus_ops = {
-	.copy_from_io = wfx_sdio_copy_from_io,
-	.copy_to_io = wfx_sdio_copy_to_io,
-	.irq_subscribe = wfx_sdio_irq_subscribe,
-	.irq_unsubscribe = wfx_sdio_irq_unsubscribe,
-	.lock			= wfx_sdio_lock,
-	.unlock			= wfx_sdio_unlock,
-	.align_size		= wfx_sdio_align_size,
-};
-
-static const struct of_device_id wfx_sdio_of_match[] = {
-	{ .compatible = "silabs,wfx-sdio" },
-	{ .compatible = "silabs,wf200" },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, wfx_sdio_of_match);
-
-static int wfx_sdio_probe(struct sdio_func *func,
-			  const struct sdio_device_id *id)
-{
-	struct device_node *np = func->dev.of_node;
-	struct wfx_sdio_priv *bus;
-	int ret;
-
-	if (func->num != 1) {
-		dev_err(&func->dev, "SDIO function number is %d while it should always be 1 (unsupported chip?)\n",
-			func->num);
-		return -ENODEV;
-	}
-
-	bus = devm_kzalloc(&func->dev, sizeof(*bus), GFP_KERNEL);
-	if (!bus)
-		return -ENOMEM;
-
-	if (np) {
-		if (!of_match_node(wfx_sdio_of_match, np)) {
-			dev_warn(&func->dev, "no compatible device found in DT\n");
-			return -ENODEV;
-		}
-		bus->of_irq = irq_of_parse_and_map(np, 0);
-	} else {
-		dev_warn(&func->dev,
-			 "device is not declared in DT, features will be limited\n");
-		// FIXME: ignore VID/PID and only rely on device tree
-		// return -ENODEV;
-	}
-
-	bus->func = func;
-	sdio_set_drvdata(func, bus);
-	func->card->quirks |= MMC_QUIRK_LENIENT_FN0 |
-			      MMC_QUIRK_BLKSZ_FOR_BYTE_MODE |
-			      MMC_QUIRK_BROKEN_BYTE_MODE_512;
-
-	sdio_claim_host(func);
-	ret = sdio_enable_func(func);
-	// Block of 64 bytes is more efficient than 512B for frame sizes < 4k
-	sdio_set_block_size(func, 64);
-	sdio_release_host(func);
-	if (ret)
-		goto err0;
-
-	bus->core = wfx_init_common(&func->dev, &wfx_sdio_pdata,
-				    &wfx_sdio_hwbus_ops, bus);
-	if (!bus->core) {
-		ret = -EIO;
-		goto err1;
-	}
-
-	ret = wfx_probe(bus->core);
-	if (ret)
-		goto err1;
-
-	return 0;
-
-err1:
-	sdio_claim_host(func);
-	sdio_disable_func(func);
-	sdio_release_host(func);
-err0:
-	return ret;
-}
-
-static void wfx_sdio_remove(struct sdio_func *func)
-{
-	struct wfx_sdio_priv *bus = sdio_get_drvdata(func);
-
-	wfx_release(bus->core);
-	sdio_claim_host(func);
-	sdio_disable_func(func);
-	sdio_release_host(func);
-}
-
-#define SDIO_VENDOR_ID_SILABS        0x0000
-#define SDIO_DEVICE_ID_SILABS_WF200  0x1000
-static const struct sdio_device_id wfx_sdio_ids[] = {
-	{ SDIO_DEVICE(SDIO_VENDOR_ID_SILABS, SDIO_DEVICE_ID_SILABS_WF200) },
-	// FIXME: ignore VID/PID and only rely on device tree
-	// { SDIO_DEVICE(SDIO_ANY_ID, SDIO_ANY_ID) },
-	{ },
-};
-MODULE_DEVICE_TABLE(sdio, wfx_sdio_ids);
-
-struct sdio_driver wfx_sdio_driver = {
-	.name = "wfx-sdio",
-	.id_table = wfx_sdio_ids,
-	.probe = wfx_sdio_probe,
-	.remove = wfx_sdio_remove,
-	.drv = {
-		.owner = THIS_MODULE,
-		.of_match_table = wfx_sdio_of_match,
-	}
-};
diff --git a/drivers/staging/wfx/bus_spi.c b/drivers/staging/wfx/bus_spi.c
deleted file mode 100644
index a99125d1a30d..000000000000
--- a/drivers/staging/wfx/bus_spi.c
+++ /dev/null
@@ -1,271 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * SPI interface.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2011, Sagrad Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/gpio/consumer.h>
-#include <linux/spi/spi.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/of.h>
-
-#include "bus.h"
-#include "wfx.h"
-#include "hwio.h"
-#include "main.h"
-#include "bh.h"
-
-#define SET_WRITE 0x7FFF        /* usage: and operation */
-#define SET_READ 0x8000         /* usage: or operation */
-
-#define WFX_RESET_INVERTED 1
-
-static const struct wfx_platform_data wfx_spi_pdata = {
-	.file_fw = "wfm_wf200",
-	.file_pds = "wf200.pds",
-	.use_rising_clk = true,
-};
-
-struct wfx_spi_priv {
-	struct spi_device *func;
-	struct wfx_dev *core;
-	struct gpio_desc *gpio_reset;
-	bool need_swab;
-};
-
-/*
- * WFx chip read data 16bits at time and place them directly into (little
- * endian) CPU register. So, chip expect byte order like "B1 B0 B3 B2" (while
- * LE is "B0 B1 B2 B3" and BE is "B3 B2 B1 B0")
- *
- * A little endian host with bits_per_word == 16 should do the right job
- * natively. The code below to support big endian host and commonly used SPI
- * 8bits.
- */
-static int wfx_spi_copy_from_io(void *priv, unsigned int addr,
-				void *dst, size_t count)
-{
-	struct wfx_spi_priv *bus = priv;
-	u16 regaddr = (addr << 12) | (count / 2) | SET_READ;
-	struct spi_message      m;
-	struct spi_transfer     t_addr = {
-		.tx_buf         = &regaddr,
-		.len            = sizeof(regaddr),
-	};
-	struct spi_transfer     t_msg = {
-		.rx_buf         = dst,
-		.len            = count,
-	};
-	u16 *dst16 = dst;
-	int ret, i;
-
-	WARN(count % 2, "buffer size must be a multiple of 2");
-
-	cpu_to_le16s(&regaddr);
-	if (bus->need_swab)
-		swab16s(&regaddr);
-
-	spi_message_init(&m);
-	spi_message_add_tail(&t_addr, &m);
-	spi_message_add_tail(&t_msg, &m);
-	ret = spi_sync(bus->func, &m);
-
-	if (bus->need_swab && addr == WFX_REG_CONFIG)
-		for (i = 0; i < count / 2; i++)
-			swab16s(&dst16[i]);
-	return ret;
-}
-
-static int wfx_spi_copy_to_io(void *priv, unsigned int addr,
-			      const void *src, size_t count)
-{
-	struct wfx_spi_priv *bus = priv;
-	u16 regaddr = (addr << 12) | (count / 2);
-	// FIXME: use a bounce buffer
-	u16 *src16 = (void *)src;
-	int ret, i;
-	struct spi_message      m;
-	struct spi_transfer     t_addr = {
-		.tx_buf         = &regaddr,
-		.len            = sizeof(regaddr),
-	};
-	struct spi_transfer     t_msg = {
-		.tx_buf         = src,
-		.len            = count,
-	};
-
-	WARN(count % 2, "buffer size must be a multiple of 2");
-	WARN(regaddr & SET_READ, "bad addr or size overflow");
-
-	cpu_to_le16s(&regaddr);
-
-	// Register address and CONFIG content always use 16bit big endian
-	// ("BADC" order)
-	if (bus->need_swab)
-		swab16s(&regaddr);
-	if (bus->need_swab && addr == WFX_REG_CONFIG)
-		for (i = 0; i < count / 2; i++)
-			swab16s(&src16[i]);
-
-	spi_message_init(&m);
-	spi_message_add_tail(&t_addr, &m);
-	spi_message_add_tail(&t_msg, &m);
-	ret = spi_sync(bus->func, &m);
-
-	if (bus->need_swab && addr == WFX_REG_CONFIG)
-		for (i = 0; i < count / 2; i++)
-			swab16s(&src16[i]);
-	return ret;
-}
-
-static void wfx_spi_lock(void *priv)
-{
-}
-
-static void wfx_spi_unlock(void *priv)
-{
-}
-
-static irqreturn_t wfx_spi_irq_handler(int irq, void *priv)
-{
-	struct wfx_spi_priv *bus = priv;
-
-	wfx_bh_request_rx(bus->core);
-	return IRQ_HANDLED;
-}
-
-static int wfx_spi_irq_subscribe(void *priv)
-{
-	struct wfx_spi_priv *bus = priv;
-	u32 flags;
-
-	flags = irq_get_trigger_type(bus->func->irq);
-	if (!flags)
-		flags = IRQF_TRIGGER_HIGH;
-	flags |= IRQF_ONESHOT;
-	return devm_request_threaded_irq(&bus->func->dev, bus->func->irq, NULL,
-					 wfx_spi_irq_handler, IRQF_ONESHOT,
-					 "wfx", bus);
-}
-
-static int wfx_spi_irq_unsubscribe(void *priv)
-{
-	struct wfx_spi_priv *bus = priv;
-
-	devm_free_irq(&bus->func->dev, bus->func->irq, bus);
-	return 0;
-}
-
-static size_t wfx_spi_align_size(void *priv, size_t size)
-{
-	// Most of SPI controllers avoid DMA if buffer size is not 32bit aligned
-	return ALIGN(size, 4);
-}
-
-static const struct hwbus_ops wfx_spi_hwbus_ops = {
-	.copy_from_io = wfx_spi_copy_from_io,
-	.copy_to_io = wfx_spi_copy_to_io,
-	.irq_subscribe = wfx_spi_irq_subscribe,
-	.irq_unsubscribe = wfx_spi_irq_unsubscribe,
-	.lock			= wfx_spi_lock,
-	.unlock			= wfx_spi_unlock,
-	.align_size		= wfx_spi_align_size,
-};
-
-static int wfx_spi_probe(struct spi_device *func)
-{
-	struct wfx_spi_priv *bus;
-	int ret;
-
-	if (!func->bits_per_word)
-		func->bits_per_word = 16;
-	ret = spi_setup(func);
-	if (ret)
-		return ret;
-	// Trace below is also displayed by spi_setup() if compiled with DEBUG
-	dev_dbg(&func->dev, "SPI params: CS=%d, mode=%d bits/word=%d speed=%d\n",
-		func->chip_select, func->mode, func->bits_per_word,
-		func->max_speed_hz);
-	if (func->bits_per_word != 16 && func->bits_per_word != 8)
-		dev_warn(&func->dev, "unusual bits/word value: %d\n",
-			 func->bits_per_word);
-	if (func->max_speed_hz > 50000000)
-		dev_warn(&func->dev, "%dHz is a very high speed\n",
-			 func->max_speed_hz);
-
-	bus = devm_kzalloc(&func->dev, sizeof(*bus), GFP_KERNEL);
-	if (!bus)
-		return -ENOMEM;
-	bus->func = func;
-	if (func->bits_per_word == 8 || IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
-		bus->need_swab = true;
-	spi_set_drvdata(func, bus);
-
-	bus->gpio_reset = devm_gpiod_get_optional(&func->dev, "reset",
-						  GPIOD_OUT_LOW);
-	if (IS_ERR(bus->gpio_reset))
-		return PTR_ERR(bus->gpio_reset);
-	if (!bus->gpio_reset) {
-		dev_warn(&func->dev,
-			 "gpio reset is not defined, trying to load firmware anyway\n");
-	} else {
-		gpiod_set_consumer_name(bus->gpio_reset, "wfx reset");
-		if (spi_get_device_id(func)->driver_data & WFX_RESET_INVERTED)
-			gpiod_toggle_active_low(bus->gpio_reset);
-		gpiod_set_value_cansleep(bus->gpio_reset, 1);
-		usleep_range(100, 150);
-		gpiod_set_value_cansleep(bus->gpio_reset, 0);
-		usleep_range(2000, 2500);
-	}
-
-	bus->core = wfx_init_common(&func->dev, &wfx_spi_pdata,
-				    &wfx_spi_hwbus_ops, bus);
-	if (!bus->core)
-		return -EIO;
-
-	return wfx_probe(bus->core);
-}
-
-static int wfx_spi_remove(struct spi_device *func)
-{
-	struct wfx_spi_priv *bus = spi_get_drvdata(func);
-
-	wfx_release(bus->core);
-	return 0;
-}
-
-/*
- * For dynamic driver binding, kernel does not use OF to match driver. It only
- * use modalias and modalias is a copy of 'compatible' DT node with vendor
- * stripped.
- */
-static const struct spi_device_id wfx_spi_id[] = {
-	{ "wfx-spi", WFX_RESET_INVERTED },
-	{ "wf200", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(spi, wfx_spi_id);
-
-#ifdef CONFIG_OF
-static const struct of_device_id wfx_spi_of_match[] = {
-	{ .compatible = "silabs,wfx-spi", .data = (void *)WFX_RESET_INVERTED },
-	{ .compatible = "silabs,wf200" },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, wfx_spi_of_match);
-#endif
-
-struct spi_driver wfx_spi_driver = {
-	.driver = {
-		.name = "wfx-spi",
-		.of_match_table = of_match_ptr(wfx_spi_of_match),
-	},
-	.id_table = wfx_spi_id,
-	.probe = wfx_spi_probe,
-	.remove = wfx_spi_remove,
-};
diff --git a/drivers/staging/wfx/data_rx.c b/drivers/staging/wfx/data_rx.c
deleted file mode 100644
index 385f2d42a0e2..000000000000
--- a/drivers/staging/wfx/data_rx.c
+++ /dev/null
@@ -1,93 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Datapath implementation.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/etherdevice.h>
-#include <net/mac80211.h>
-
-#include "data_rx.h"
-#include "wfx.h"
-#include "bh.h"
-#include "sta.h"
-
-static void wfx_rx_handle_ba(struct wfx_vif *wvif, struct ieee80211_mgmt *mgmt)
-{
-	int params, tid;
-
-	if (wfx_api_older_than(wvif->wdev, 3, 6))
-		return;
-
-	switch (mgmt->u.action.u.addba_req.action_code) {
-	case WLAN_ACTION_ADDBA_REQ:
-		params = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
-		tid = (params & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
-		ieee80211_start_rx_ba_session_offl(wvif->vif, mgmt->sa, tid);
-		break;
-	case WLAN_ACTION_DELBA:
-		params = le16_to_cpu(mgmt->u.action.u.delba.params);
-		tid = (params &  IEEE80211_DELBA_PARAM_TID_MASK) >> 12;
-		ieee80211_stop_rx_ba_session_offl(wvif->vif, mgmt->sa, tid);
-		break;
-	}
-}
-
-void wfx_rx_cb(struct wfx_vif *wvif,
-	       const struct hif_ind_rx *arg, struct sk_buff *skb)
-{
-	struct ieee80211_rx_status *hdr = IEEE80211_SKB_RXCB(skb);
-	struct ieee80211_hdr *frame = (struct ieee80211_hdr *)skb->data;
-	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
-
-	memset(hdr, 0, sizeof(*hdr));
-
-	if (arg->status == HIF_STATUS_RX_FAIL_MIC)
-		hdr->flag |= RX_FLAG_MMIC_ERROR | RX_FLAG_IV_STRIPPED;
-	else if (arg->status)
-		goto drop;
-
-	if (skb->len < sizeof(struct ieee80211_pspoll)) {
-		dev_warn(wvif->wdev->dev, "malformed SDU received\n");
-		goto drop;
-	}
-
-	hdr->band = NL80211_BAND_2GHZ;
-	hdr->freq = ieee80211_channel_to_frequency(arg->channel_number,
-						   hdr->band);
-
-	if (arg->rxed_rate >= 14) {
-		hdr->encoding = RX_ENC_HT;
-		hdr->rate_idx = arg->rxed_rate - 14;
-	} else if (arg->rxed_rate >= 4) {
-		hdr->rate_idx = arg->rxed_rate - 2;
-	} else {
-		hdr->rate_idx = arg->rxed_rate;
-	}
-
-	if (!arg->rcpi_rssi) {
-		hdr->flag |= RX_FLAG_NO_SIGNAL_VAL;
-		dev_info(wvif->wdev->dev, "received frame without RSSI data\n");
-	}
-	hdr->signal = arg->rcpi_rssi / 2 - 110;
-	hdr->antenna = 0;
-
-	if (arg->encryp)
-		hdr->flag |= RX_FLAG_DECRYPTED;
-
-	// Block ack negotiation is offloaded by the firmware. However,
-	// re-ordering must be done by the mac80211.
-	if (ieee80211_is_action(frame->frame_control) &&
-	    mgmt->u.action.category == WLAN_CATEGORY_BACK &&
-	    skb->len > IEEE80211_MIN_ACTION_SIZE) {
-		wfx_rx_handle_ba(wvif, mgmt);
-		goto drop;
-	}
-
-	ieee80211_rx_irqsafe(wvif->wdev->hw, skb);
-	return;
-
-drop:
-	dev_kfree_skb(skb);
-}
diff --git a/drivers/staging/wfx/data_rx.h b/drivers/staging/wfx/data_rx.h
deleted file mode 100644
index 4c0da37f2084..000000000000
--- a/drivers/staging/wfx/data_rx.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Datapath implementation.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_DATA_RX_H
-#define WFX_DATA_RX_H
-
-struct wfx_vif;
-struct sk_buff;
-struct hif_ind_rx;
-
-void wfx_rx_cb(struct wfx_vif *wvif,
-	       const struct hif_ind_rx *arg, struct sk_buff *skb);
-
-#endif /* WFX_DATA_RX_H */
diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
deleted file mode 100644
index 41f6a604a697..000000000000
--- a/drivers/staging/wfx/data_tx.c
+++ /dev/null
@@ -1,585 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Datapath implementation.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <net/mac80211.h>
-#include <linux/etherdevice.h>
-
-#include "data_tx.h"
-#include "wfx.h"
-#include "bh.h"
-#include "sta.h"
-#include "queue.h"
-#include "debug.h"
-#include "traces.h"
-#include "hif_tx_mib.h"
-
-static int wfx_get_hw_rate(struct wfx_dev *wdev,
-			   const struct ieee80211_tx_rate *rate)
-{
-	struct ieee80211_supported_band *band;
-
-	if (rate->idx < 0)
-		return -1;
-	if (rate->flags & IEEE80211_TX_RC_MCS) {
-		if (rate->idx > 7) {
-			WARN(1, "wrong rate->idx value: %d", rate->idx);
-			return -1;
-		}
-		return rate->idx + 14;
-	}
-	if (rate->idx >= band->n_bitrates) {
-		WARN(1, "wrong rate->idx value: %d", rate->idx);
-		return -1;
-	}
-	// WFx only support 2GHz, else band information should be retrieved
-	// from ieee80211_tx_info
-	band = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
-	return band->bitrates[rate->idx].hw_value;
-}
-
-/* TX policy cache implementation */
-
-static void wfx_tx_policy_build(struct wfx_vif *wvif, struct tx_policy *policy,
-				struct ieee80211_tx_rate *rates)
-{
-	struct wfx_dev *wdev = wvif->wdev;
-	int i, rateid;
-	u8 count;
-
-	WARN(rates[0].idx < 0, "invalid rate policy");
-	memset(policy, 0, sizeof(*policy));
-	for (i = 0; i < IEEE80211_TX_MAX_RATES; ++i) {
-		if (rates[i].idx < 0)
-			break;
-		WARN_ON(rates[i].count > 15);
-		rateid = wfx_get_hw_rate(wdev, &rates[i]);
-		// Pack two values in each byte of policy->rates
-		count = rates[i].count;
-		if (rateid % 2)
-			count <<= 4;
-		policy->rates[rateid / 2] |= count;
-	}
-}
-
-static bool tx_policy_is_equal(const struct tx_policy *a,
-			       const struct tx_policy *b)
-{
-	return !memcmp(a->rates, b->rates, sizeof(a->rates));
-}
-
-static int wfx_tx_policy_find(struct tx_policy_cache *cache,
-			      struct tx_policy *wanted)
-{
-	struct tx_policy *it;
-
-	list_for_each_entry(it, &cache->used, link)
-		if (tx_policy_is_equal(wanted, it))
-			return it - cache->cache;
-	list_for_each_entry(it, &cache->free, link)
-		if (tx_policy_is_equal(wanted, it))
-			return it - cache->cache;
-	return -1;
-}
-
-static void wfx_tx_policy_use(struct tx_policy_cache *cache,
-			      struct tx_policy *entry)
-{
-	++entry->usage_count;
-	list_move(&entry->link, &cache->used);
-}
-
-static int wfx_tx_policy_release(struct tx_policy_cache *cache,
-				 struct tx_policy *entry)
-{
-	int ret = --entry->usage_count;
-
-	if (!ret)
-		list_move(&entry->link, &cache->free);
-	return ret;
-}
-
-static int wfx_tx_policy_get(struct wfx_vif *wvif,
-			     struct ieee80211_tx_rate *rates, bool *renew)
-{
-	int idx;
-	struct tx_policy_cache *cache = &wvif->tx_policy_cache;
-	struct tx_policy wanted;
-
-	wfx_tx_policy_build(wvif, &wanted, rates);
-
-	spin_lock_bh(&cache->lock);
-	if (list_empty(&cache->free)) {
-		WARN(1, "unable to get a valid Tx policy");
-		spin_unlock_bh(&cache->lock);
-		return HIF_TX_RETRY_POLICY_INVALID;
-	}
-	idx = wfx_tx_policy_find(cache, &wanted);
-	if (idx >= 0) {
-		*renew = false;
-	} else {
-		struct tx_policy *entry;
-		*renew = true;
-		/* If policy is not found create a new one
-		 * using the oldest entry in "free" list
-		 */
-		entry = list_entry(cache->free.prev, struct tx_policy, link);
-		memcpy(entry->rates, wanted.rates, sizeof(entry->rates));
-		entry->uploaded = false;
-		entry->usage_count = 0;
-		idx = entry - cache->cache;
-	}
-	wfx_tx_policy_use(cache, &cache->cache[idx]);
-	if (list_empty(&cache->free))
-		ieee80211_stop_queues(wvif->wdev->hw);
-	spin_unlock_bh(&cache->lock);
-	return idx;
-}
-
-static void wfx_tx_policy_put(struct wfx_vif *wvif, int idx)
-{
-	int usage, locked;
-	struct tx_policy_cache *cache = &wvif->tx_policy_cache;
-
-	if (idx == HIF_TX_RETRY_POLICY_INVALID)
-		return;
-	spin_lock_bh(&cache->lock);
-	locked = list_empty(&cache->free);
-	usage = wfx_tx_policy_release(cache, &cache->cache[idx]);
-	if (locked && !usage)
-		ieee80211_wake_queues(wvif->wdev->hw);
-	spin_unlock_bh(&cache->lock);
-}
-
-static int wfx_tx_policy_upload(struct wfx_vif *wvif)
-{
-	struct tx_policy *policies = wvif->tx_policy_cache.cache;
-	u8 tmp_rates[12];
-	int i, is_used;
-
-	do {
-		spin_lock_bh(&wvif->tx_policy_cache.lock);
-		for (i = 0; i < ARRAY_SIZE(wvif->tx_policy_cache.cache); ++i) {
-			is_used = memzcmp(policies[i].rates,
-					  sizeof(policies[i].rates));
-			if (!policies[i].uploaded && is_used)
-				break;
-		}
-		if (i < ARRAY_SIZE(wvif->tx_policy_cache.cache)) {
-			policies[i].uploaded = true;
-			memcpy(tmp_rates, policies[i].rates, sizeof(tmp_rates));
-			spin_unlock_bh(&wvif->tx_policy_cache.lock);
-			hif_set_tx_rate_retry_policy(wvif, i, tmp_rates);
-		} else {
-			spin_unlock_bh(&wvif->tx_policy_cache.lock);
-		}
-	} while (i < ARRAY_SIZE(wvif->tx_policy_cache.cache));
-	return 0;
-}
-
-void wfx_tx_policy_upload_work(struct work_struct *work)
-{
-	struct wfx_vif *wvif =
-		container_of(work, struct wfx_vif, tx_policy_upload_work);
-
-	wfx_tx_policy_upload(wvif);
-	wfx_tx_unlock(wvif->wdev);
-}
-
-void wfx_tx_policy_init(struct wfx_vif *wvif)
-{
-	struct tx_policy_cache *cache = &wvif->tx_policy_cache;
-	int i;
-
-	memset(cache, 0, sizeof(*cache));
-
-	spin_lock_init(&cache->lock);
-	INIT_LIST_HEAD(&cache->used);
-	INIT_LIST_HEAD(&cache->free);
-
-	for (i = 0; i < ARRAY_SIZE(cache->cache); ++i)
-		list_add(&cache->cache[i].link, &cache->free);
-}
-
-/* Tx implementation */
-
-static bool ieee80211_is_action_back(struct ieee80211_hdr *hdr)
-{
-	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)hdr;
-
-	if (!ieee80211_is_action(mgmt->frame_control))
-		return false;
-	if (mgmt->u.action.category != WLAN_CATEGORY_BACK)
-		return false;
-	return true;
-}
-
-static u8 wfx_tx_get_link_id(struct wfx_vif *wvif, struct ieee80211_sta *sta,
-			     struct ieee80211_hdr *hdr)
-{
-	struct wfx_sta_priv *sta_priv =
-		sta ? (struct wfx_sta_priv *)&sta->drv_priv : NULL;
-	const u8 *da = ieee80211_get_DA(hdr);
-
-	if (sta_priv && sta_priv->link_id)
-		return sta_priv->link_id;
-	if (wvif->vif->type != NL80211_IFTYPE_AP)
-		return 0;
-	if (is_multicast_ether_addr(da))
-		return 0;
-	return HIF_LINK_ID_NOT_ASSOCIATED;
-}
-
-static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates)
-{
-	int i;
-	bool finished;
-
-	// Firmware is not able to mix rates with different flags
-	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-		if (rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
-			rates[i].flags |= IEEE80211_TX_RC_SHORT_GI;
-		if (!(rates[0].flags & IEEE80211_TX_RC_SHORT_GI))
-			rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI;
-		if (!(rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS))
-			rates[i].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS;
-	}
-
-	// Sort rates and remove duplicates
-	do {
-		finished = true;
-		for (i = 0; i < IEEE80211_TX_MAX_RATES - 1; i++) {
-			if (rates[i + 1].idx == rates[i].idx &&
-			    rates[i].idx != -1) {
-				rates[i].count += rates[i + 1].count;
-				if (rates[i].count > 15)
-					rates[i].count = 15;
-				rates[i + 1].idx = -1;
-				rates[i + 1].count = 0;
-
-				finished = false;
-			}
-			if (rates[i + 1].idx > rates[i].idx) {
-				swap(rates[i + 1], rates[i]);
-				finished = false;
-			}
-		}
-	} while (!finished);
-	// Ensure that MCS0 or 1Mbps is present at the end of the retry list
-	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-		if (rates[i].idx == 0)
-			break;
-		if (rates[i].idx == -1) {
-			rates[i].idx = 0;
-			rates[i].count = 8; // == hw->max_rate_tries
-			rates[i].flags = rates[i - 1].flags &
-					 IEEE80211_TX_RC_MCS;
-			break;
-		}
-	}
-	// All retries use long GI
-	for (i = 1; i < IEEE80211_TX_MAX_RATES; i++)
-		rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI;
-}
-
-static u8 wfx_tx_get_rate_id(struct wfx_vif *wvif,
-			     struct ieee80211_tx_info *tx_info)
-{
-	bool tx_policy_renew = false;
-	u8 rate_id;
-
-	rate_id = wfx_tx_policy_get(wvif,
-				    tx_info->driver_rates, &tx_policy_renew);
-	if (rate_id == HIF_TX_RETRY_POLICY_INVALID)
-		dev_warn(wvif->wdev->dev, "unable to get a valid Tx policy");
-
-	if (tx_policy_renew) {
-		wfx_tx_lock(wvif->wdev);
-		if (!schedule_work(&wvif->tx_policy_upload_work))
-			wfx_tx_unlock(wvif->wdev);
-	}
-	return rate_id;
-}
-
-static int wfx_tx_get_frame_format(struct ieee80211_tx_info *tx_info)
-{
-	if (!(tx_info->driver_rates[0].flags & IEEE80211_TX_RC_MCS))
-		return HIF_FRAME_FORMAT_NON_HT;
-	else if (!(tx_info->driver_rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD))
-		return HIF_FRAME_FORMAT_MIXED_FORMAT_HT;
-	else
-		return HIF_FRAME_FORMAT_GF_HT_11N;
-}
-
-static int wfx_tx_get_icv_len(struct ieee80211_key_conf *hw_key)
-{
-	int mic_space;
-
-	if (!hw_key)
-		return 0;
-	if (hw_key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
-		return 0;
-	mic_space = (hw_key->cipher == WLAN_CIPHER_SUITE_TKIP) ? 8 : 0;
-	return hw_key->icv_len + mic_space;
-}
-
-static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta,
-			struct sk_buff *skb)
-{
-	struct hif_msg *hif_msg;
-	struct hif_req_tx *req;
-	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-	int queue_id = skb_get_queue_mapping(skb);
-	size_t offset = (size_t)skb->data & 3;
-	int wmsg_len = sizeof(struct hif_msg) +
-			sizeof(struct hif_req_tx) + offset;
-
-	WARN(queue_id >= IEEE80211_NUM_ACS, "unsupported queue_id");
-	wfx_tx_fixup_rates(tx_info->driver_rates);
-
-	// From now tx_info->control is unusable
-	memset(tx_info->rate_driver_data, 0, sizeof(struct wfx_tx_priv));
-
-	// Fill hif_msg
-	WARN(skb_headroom(skb) < wmsg_len, "not enough space in skb");
-	WARN(offset & 1, "attempt to transmit an unaligned frame");
-	skb_put(skb, wfx_tx_get_icv_len(hw_key));
-	skb_push(skb, wmsg_len);
-	memset(skb->data, 0, wmsg_len);
-	hif_msg = (struct hif_msg *)skb->data;
-	hif_msg->len = cpu_to_le16(skb->len);
-	hif_msg->id = HIF_REQ_ID_TX;
-	hif_msg->interface = wvif->id;
-	if (skb->len > wvif->wdev->hw_caps.size_inp_ch_buf) {
-		dev_warn(wvif->wdev->dev,
-			 "requested frame size (%d) is larger than maximum supported (%d)\n",
-			 skb->len, wvif->wdev->hw_caps.size_inp_ch_buf);
-		skb_pull(skb, wmsg_len);
-		return -EIO;
-	}
-
-	// Fill tx request
-	req = (struct hif_req_tx *)hif_msg->body;
-	// packet_id just need to be unique on device. 32bits are more than
-	// necessary for that task, so we tae advantage of it to add some extra
-	// data for debug.
-	req->packet_id = atomic_add_return(1, &wvif->wdev->packet_id) & 0xFFFF;
-	req->packet_id |= IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)) << 16;
-	req->packet_id |= queue_id << 28;
-
-	req->fc_offset = offset;
-	if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
-		req->after_dtim = 1;
-	req->peer_sta_id = wfx_tx_get_link_id(wvif, sta, hdr);
-	// Queue index are inverted between firmware and Linux
-	req->queue_id = 3 - queue_id;
-	req->retry_policy_index = wfx_tx_get_rate_id(wvif, tx_info);
-	req->frame_format = wfx_tx_get_frame_format(tx_info);
-	if (tx_info->driver_rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
-		req->short_gi = 1;
-
-	// Auxiliary operations
-	wfx_tx_queues_put(wvif, skb);
-	if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
-		schedule_work(&wvif->update_tim_work);
-	wfx_bh_request_tx(wvif->wdev);
-	return 0;
-}
-
-void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
-	    struct sk_buff *skb)
-{
-	struct wfx_dev *wdev = hw->priv;
-	struct wfx_vif *wvif;
-	struct ieee80211_sta *sta = control ? control->sta : NULL;
-	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
-	size_t driver_data_room = sizeof_field(struct ieee80211_tx_info,
-					       rate_driver_data);
-
-	compiletime_assert(sizeof(struct wfx_tx_priv) <= driver_data_room,
-			   "struct tx_priv is too large");
-	WARN(skb->next || skb->prev, "skb is already member of a list");
-	// control.vif can be NULL for injected frames
-	if (tx_info->control.vif)
-		wvif = (struct wfx_vif *)tx_info->control.vif->drv_priv;
-	else
-		wvif = wvif_iterate(wdev, NULL);
-	if (WARN_ON(!wvif))
-		goto drop;
-	// Because of TX_AMPDU_SETUP_IN_HW, mac80211 does not try to send any
-	// BlockAck session management frame. The check below exist just in case.
-	if (ieee80211_is_action_back(hdr)) {
-		dev_info(wdev->dev, "drop BA action\n");
-		goto drop;
-	}
-	if (wfx_tx_inner(wvif, sta, skb))
-		goto drop;
-
-	return;
-
-drop:
-	ieee80211_tx_status_irqsafe(wdev->hw, skb);
-}
-
-static void wfx_skb_dtor(struct wfx_vif *wvif, struct sk_buff *skb)
-{
-	struct hif_msg *hif = (struct hif_msg *)skb->data;
-	struct hif_req_tx *req = (struct hif_req_tx *)hif->body;
-	unsigned int offset = sizeof(struct hif_msg) +
-			      sizeof(struct hif_req_tx) +
-			      req->fc_offset;
-
-	if (!wvif) {
-		pr_warn("%s: vif associated with the skb does not exist anymore\n", __func__);
-		return;
-	}
-	wfx_tx_policy_put(wvif, req->retry_policy_index);
-	skb_pull(skb, offset);
-	ieee80211_tx_status_irqsafe(wvif->wdev->hw, skb);
-}
-
-static void wfx_tx_fill_rates(struct wfx_dev *wdev,
-			      struct ieee80211_tx_info *tx_info,
-			      const struct hif_cnf_tx *arg)
-{
-	struct ieee80211_tx_rate *rate;
-	int tx_count;
-	int i;
-
-	tx_count = arg->ack_failures;
-	if (!arg->status || arg->ack_failures)
-		tx_count += 1; // Also report success
-	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
-		rate = &tx_info->status.rates[i];
-		if (rate->idx < 0)
-			break;
-		if (tx_count < rate->count &&
-		    arg->status == HIF_STATUS_TX_FAIL_RETRIES &&
-		    arg->ack_failures)
-			dev_dbg(wdev->dev, "all retries were not consumed: %d != %d\n",
-				rate->count, tx_count);
-		if (tx_count <= rate->count && tx_count &&
-		    arg->txed_rate != wfx_get_hw_rate(wdev, rate))
-			dev_dbg(wdev->dev, "inconsistent tx_info rates: %d != %d\n",
-				arg->txed_rate, wfx_get_hw_rate(wdev, rate));
-		if (tx_count > rate->count) {
-			tx_count -= rate->count;
-		} else if (!tx_count) {
-			rate->count = 0;
-			rate->idx = -1;
-		} else {
-			rate->count = tx_count;
-			tx_count = 0;
-		}
-	}
-	if (tx_count)
-		dev_dbg(wdev->dev, "%d more retries than expected\n", tx_count);
-}
-
-void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct hif_cnf_tx *arg)
-{
-	struct ieee80211_tx_info *tx_info;
-	struct wfx_vif *wvif;
-	struct sk_buff *skb;
-
-	skb = wfx_pending_get(wdev, arg->packet_id);
-	if (!skb) {
-		dev_warn(wdev->dev, "received unknown packet_id (%#.8x) from chip\n",
-			 arg->packet_id);
-		return;
-	}
-	tx_info = IEEE80211_SKB_CB(skb);
-	wvif = wdev_to_wvif(wdev, ((struct hif_msg *)skb->data)->interface);
-	WARN_ON(!wvif);
-	if (!wvif)
-		return;
-
-	// Note that wfx_pending_get_pkt_us_delay() get data from tx_info
-	_trace_tx_stats(arg, skb, wfx_pending_get_pkt_us_delay(wdev, skb));
-	wfx_tx_fill_rates(wdev, tx_info, arg);
-	// From now, you can touch to tx_info->status, but do not touch to
-	// tx_priv anymore
-	// FIXME: use ieee80211_tx_info_clear_status()
-	memset(tx_info->rate_driver_data, 0, sizeof(tx_info->rate_driver_data));
-	memset(tx_info->pad, 0, sizeof(tx_info->pad));
-
-	if (!arg->status) {
-		tx_info->status.tx_time =
-			le32_to_cpu(arg->media_delay) -
-			le32_to_cpu(arg->tx_queue_delay);
-		if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
-			tx_info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
-		else
-			tx_info->flags |= IEEE80211_TX_STAT_ACK;
-	} else if (arg->status == HIF_STATUS_TX_FAIL_REQUEUE) {
-		WARN(!arg->requeue, "incoherent status and result_flags");
-		if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
-			wvif->after_dtim_tx_allowed = false; // DTIM period elapsed
-			schedule_work(&wvif->update_tim_work);
-		}
-		tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
-	}
-	wfx_skb_dtor(wvif, skb);
-}
-
-static void wfx_flush_vif(struct wfx_vif *wvif, u32 queues,
-			  struct sk_buff_head *dropped)
-{
-	struct wfx_queue *queue;
-	int i;
-
-	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
-		if (!(BIT(i) & queues))
-			continue;
-		queue = &wvif->tx_queue[i];
-		if (dropped)
-			wfx_tx_queue_drop(wvif, queue, dropped);
-	}
-	if (wvif->wdev->chip_frozen)
-		return;
-	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
-		if (!(BIT(i) & queues))
-			continue;
-		queue = &wvif->tx_queue[i];
-		if (wait_event_timeout(wvif->wdev->tx_dequeue,
-				       wfx_tx_queue_empty(wvif, queue),
-				       msecs_to_jiffies(1000)) <= 0)
-			dev_warn(wvif->wdev->dev,
-				 "frames queued while flushing tx queues?");
-	}
-}
-
-void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-	       u32 queues, bool drop)
-{
-	struct wfx_dev *wdev = hw->priv;
-	struct sk_buff_head dropped;
-	struct wfx_vif *wvif;
-	struct hif_msg *hif;
-	struct sk_buff *skb;
-
-	skb_queue_head_init(&dropped);
-	if (vif) {
-		wvif = (struct wfx_vif *)vif->drv_priv;
-		wfx_flush_vif(wvif, queues, drop ? &dropped : NULL);
-	} else {
-		wvif = NULL;
-		while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
-			wfx_flush_vif(wvif, queues, drop ? &dropped : NULL);
-	}
-	wfx_tx_flush(wdev);
-	if (wdev->chip_frozen)
-		wfx_pending_drop(wdev, &dropped);
-	while ((skb = skb_dequeue(&dropped)) != NULL) {
-		hif = (struct hif_msg *)skb->data;
-		wvif = wdev_to_wvif(wdev, hif->interface);
-		ieee80211_tx_info_clear_status(IEEE80211_SKB_CB(skb));
-		wfx_skb_dtor(wvif, skb);
-	}
-}
diff --git a/drivers/staging/wfx/data_tx.h b/drivers/staging/wfx/data_tx.h
deleted file mode 100644
index 46c9fff7a870..000000000000
--- a/drivers/staging/wfx/data_tx.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Datapath implementation.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_DATA_TX_H
-#define WFX_DATA_TX_H
-
-#include <linux/list.h>
-#include <net/mac80211.h>
-
-#include "hif_api_cmd.h"
-#include "hif_api_mib.h"
-
-struct wfx_tx_priv;
-struct wfx_dev;
-struct wfx_vif;
-
-struct tx_policy {
-	struct list_head link;
-	int usage_count;
-	u8 rates[12];
-	bool uploaded;
-};
-
-struct tx_policy_cache {
-	struct tx_policy cache[HIF_TX_RETRY_POLICY_MAX];
-	// FIXME: use a trees and drop hash from tx_policy
-	struct list_head used;
-	struct list_head free;
-	spinlock_t lock;
-};
-
-struct wfx_tx_priv {
-	ktime_t xmit_timestamp;
-};
-
-void wfx_tx_policy_init(struct wfx_vif *wvif);
-void wfx_tx_policy_upload_work(struct work_struct *work);
-
-void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
-	    struct sk_buff *skb);
-void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct hif_cnf_tx *arg);
-void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-	       u32 queues, bool drop);
-
-static inline struct wfx_tx_priv *wfx_skb_tx_priv(struct sk_buff *skb)
-{
-	struct ieee80211_tx_info *tx_info;
-
-	if (!skb)
-		return NULL;
-	tx_info = IEEE80211_SKB_CB(skb);
-	return (struct wfx_tx_priv *)tx_info->rate_driver_data;
-}
-
-static inline struct hif_req_tx *wfx_skb_txreq(struct sk_buff *skb)
-{
-	struct hif_msg *hif = (struct hif_msg *)skb->data;
-	struct hif_req_tx *req = (struct hif_req_tx *)hif->body;
-
-	return req;
-}
-
-#endif /* WFX_DATA_TX_H */
diff --git a/drivers/staging/wfx/debug.c b/drivers/staging/wfx/debug.c
deleted file mode 100644
index eedada78c25f..000000000000
--- a/drivers/staging/wfx/debug.c
+++ /dev/null
@@ -1,359 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Debugfs interface.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/crc32.h>
-
-#include "debug.h"
-#include "wfx.h"
-#include "sta.h"
-#include "main.h"
-#include "hif_tx.h"
-#include "hif_tx_mib.h"
-
-#define CREATE_TRACE_POINTS
-#include "traces.h"
-
-static const struct trace_print_flags hif_msg_print_map[] = {
-	hif_msg_list,
-};
-
-static const struct trace_print_flags hif_mib_print_map[] = {
-	hif_mib_list,
-};
-
-static const struct trace_print_flags wfx_reg_print_map[] = {
-	wfx_reg_list,
-};
-
-static const char *get_symbol(unsigned long val,
-			      const struct trace_print_flags *symbol_array)
-{
-	int i;
-
-	for (i = 0; symbol_array[i].mask != -1; i++) {
-		if (val == symbol_array[i].mask)
-			return symbol_array[i].name;
-	}
-
-	return "unknown";
-}
-
-const char *get_hif_name(unsigned long id)
-{
-	return get_symbol(id, hif_msg_print_map);
-}
-
-const char *get_mib_name(unsigned long id)
-{
-	return get_symbol(id, hif_mib_print_map);
-}
-
-const char *get_reg_name(unsigned long id)
-{
-	return get_symbol(id, wfx_reg_print_map);
-}
-
-static int wfx_counters_show(struct seq_file *seq, void *v)
-{
-	int ret, i;
-	struct wfx_dev *wdev = seq->private;
-	struct hif_mib_extended_count_table counters[3];
-
-	for (i = 0; i < ARRAY_SIZE(counters); i++) {
-		ret = hif_get_counters_table(wdev, i, counters + i);
-		if (ret < 0)
-			return ret;
-		if (ret > 0)
-			return -EIO;
-	}
-
-	seq_printf(seq, "%-24s %12s %12s %12s\n",
-		   "", "global", "iface 0", "iface 1");
-
-#define PUT_COUNTER(name) \
-	seq_printf(seq, "%-24s %12d %12d %12d\n", #name, \
-		   le32_to_cpu(counters[2].count_##name), \
-		   le32_to_cpu(counters[0].count_##name), \
-		   le32_to_cpu(counters[1].count_##name))
-
-	PUT_COUNTER(tx_packets);
-	PUT_COUNTER(tx_multicast_frames);
-	PUT_COUNTER(tx_frames_success);
-	PUT_COUNTER(tx_frame_failures);
-	PUT_COUNTER(tx_frames_retried);
-	PUT_COUNTER(tx_frames_multi_retried);
-
-	PUT_COUNTER(rts_success);
-	PUT_COUNTER(rts_failures);
-	PUT_COUNTER(ack_failures);
-
-	PUT_COUNTER(rx_packets);
-	PUT_COUNTER(rx_frames_success);
-	PUT_COUNTER(rx_packet_errors);
-	PUT_COUNTER(plcp_errors);
-	PUT_COUNTER(fcs_errors);
-	PUT_COUNTER(rx_decryption_failures);
-	PUT_COUNTER(rx_mic_failures);
-	PUT_COUNTER(rx_no_key_failures);
-	PUT_COUNTER(rx_frame_duplicates);
-	PUT_COUNTER(rx_multicast_frames);
-	PUT_COUNTER(rx_cmacicv_errors);
-	PUT_COUNTER(rx_cmac_replays);
-	PUT_COUNTER(rx_mgmt_ccmp_replays);
-
-	PUT_COUNTER(rx_beacon);
-	PUT_COUNTER(miss_beacon);
-
-#undef PUT_COUNTER
-
-	for (i = 0; i < ARRAY_SIZE(counters[0].reserved); i++)
-		seq_printf(seq, "reserved[%02d]%12s %12d %12d %12d\n", i, "",
-			   le32_to_cpu(counters[2].reserved[i]),
-			   le32_to_cpu(counters[0].reserved[i]),
-			   le32_to_cpu(counters[1].reserved[i]));
-
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(wfx_counters);
-
-static const char * const channel_names[] = {
-	[0] = "1M",
-	[1] = "2M",
-	[2] = "5.5M",
-	[3] = "11M",
-	/* Entries 4 and 5 does not exist */
-	[6] = "6M",
-	[7] = "9M",
-	[8] = "12M",
-	[9] = "18M",
-	[10] = "24M",
-	[11] = "36M",
-	[12] = "48M",
-	[13] = "54M",
-	[14] = "MCS0",
-	[15] = "MCS1",
-	[16] = "MCS2",
-	[17] = "MCS3",
-	[18] = "MCS4",
-	[19] = "MCS5",
-	[20] = "MCS6",
-	[21] = "MCS7",
-};
-
-static int wfx_rx_stats_show(struct seq_file *seq, void *v)
-{
-	struct wfx_dev *wdev = seq->private;
-	struct hif_rx_stats *st = &wdev->rx_stats;
-	int i;
-
-	mutex_lock(&wdev->rx_stats_lock);
-	seq_printf(seq, "Timestamp: %dus\n", st->date);
-	seq_printf(seq, "Low power clock: frequency %uHz, external %s\n",
-		   le32_to_cpu(st->pwr_clk_freq),
-		   st->is_ext_pwr_clk ? "yes" : "no");
-	seq_printf(seq,
-		   "Num. of frames: %d, PER (x10e4): %d, Throughput: %dKbps/s\n",
-		   st->nb_rx_frame, st->per_total, st->throughput);
-	seq_puts(seq, "       Num. of      PER     RSSI      SNR      CFO\n");
-	seq_puts(seq, "        frames  (x10e4)    (dBm)     (dB)    (kHz)\n");
-	for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
-		if (channel_names[i])
-			seq_printf(seq, "%5s %8d %8d %8d %8d %8d\n",
-				   channel_names[i],
-				   le32_to_cpu(st->nb_rx_by_rate[i]),
-				   le16_to_cpu(st->per[i]),
-				   (s16)le16_to_cpu(st->rssi[i]) / 100,
-				   (s16)le16_to_cpu(st->snr[i]) / 100,
-				   (s16)le16_to_cpu(st->cfo[i]));
-	}
-	mutex_unlock(&wdev->rx_stats_lock);
-
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(wfx_rx_stats);
-
-static int wfx_tx_power_loop_show(struct seq_file *seq, void *v)
-{
-	struct wfx_dev *wdev = seq->private;
-	struct hif_tx_power_loop_info *st = &wdev->tx_power_loop_info;
-	int tmp;
-
-	mutex_lock(&wdev->tx_power_loop_info_lock);
-	tmp = le16_to_cpu(st->tx_gain_dig);
-	seq_printf(seq, "Tx gain digital: %d\n", tmp);
-	tmp = le16_to_cpu(st->tx_gain_pa);
-	seq_printf(seq, "Tx gain PA: %d\n", tmp);
-	tmp = (s16)le16_to_cpu(st->target_pout);
-	seq_printf(seq, "Target Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25);
-	tmp = (s16)le16_to_cpu(st->p_estimation);
-	seq_printf(seq, "FEM Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25);
-	tmp = le16_to_cpu(st->vpdet);
-	seq_printf(seq, "Vpdet: %d mV\n", tmp);
-	seq_printf(seq, "Measure index: %d\n", st->measurement_index);
-	mutex_unlock(&wdev->tx_power_loop_info_lock);
-
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(wfx_tx_power_loop);
-
-static ssize_t wfx_send_pds_write(struct file *file,
-				  const char __user *user_buf,
-				  size_t count, loff_t *ppos)
-{
-	struct wfx_dev *wdev = file->private_data;
-	char *buf;
-	int ret;
-
-	if (*ppos != 0) {
-		dev_dbg(wdev->dev, "PDS data must be written in one transaction");
-		return -EBUSY;
-	}
-	buf = memdup_user(user_buf, count);
-	if (IS_ERR(buf))
-		return PTR_ERR(buf);
-	*ppos = *ppos + count;
-	ret = wfx_send_pds(wdev, buf, count);
-	kfree(buf);
-	if (ret < 0)
-		return ret;
-	return count;
-}
-
-static const struct file_operations wfx_send_pds_fops = {
-	.open = simple_open,
-	.write = wfx_send_pds_write,
-};
-
-struct dbgfs_hif_msg {
-	struct wfx_dev *wdev;
-	struct completion complete;
-	u8 reply[1024];
-	int ret;
-};
-
-static ssize_t wfx_send_hif_msg_write(struct file *file,
-				      const char __user *user_buf,
-				      size_t count, loff_t *ppos)
-{
-	struct dbgfs_hif_msg *context = file->private_data;
-	struct wfx_dev *wdev = context->wdev;
-	struct hif_msg *request;
-
-	if (completion_done(&context->complete)) {
-		dev_dbg(wdev->dev, "read previous result before start a new one\n");
-		return -EBUSY;
-	}
-	if (count < sizeof(struct hif_msg))
-		return -EINVAL;
-
-	// wfx_cmd_send() checks that reply buffer is wide enough, but does not
-	// return precise length read. User have to know how many bytes should
-	// be read. Filling reply buffer with a memory pattern may help user.
-	memset(context->reply, 0xFF, sizeof(context->reply));
-	request = memdup_user(user_buf, count);
-	if (IS_ERR(request))
-		return PTR_ERR(request);
-	if (le16_to_cpu(request->len) != count) {
-		kfree(request);
-		return -EINVAL;
-	}
-	context->ret = wfx_cmd_send(wdev, request, context->reply,
-				    sizeof(context->reply), false);
-
-	kfree(request);
-	complete(&context->complete);
-	return count;
-}
-
-static ssize_t wfx_send_hif_msg_read(struct file *file, char __user *user_buf,
-				     size_t count, loff_t *ppos)
-{
-	struct dbgfs_hif_msg *context = file->private_data;
-	int ret;
-
-	if (count > sizeof(context->reply))
-		return -EINVAL;
-	ret = wait_for_completion_interruptible(&context->complete);
-	if (ret)
-		return ret;
-	if (context->ret < 0)
-		return context->ret;
-	// Be careful, write() is waiting for a full message while read()
-	// only returns a payload
-	if (copy_to_user(user_buf, context->reply, count))
-		return -EFAULT;
-
-	return count;
-}
-
-static int wfx_send_hif_msg_open(struct inode *inode, struct file *file)
-{
-	struct dbgfs_hif_msg *context = kzalloc(sizeof(*context), GFP_KERNEL);
-
-	if (!context)
-		return -ENOMEM;
-	context->wdev = inode->i_private;
-	init_completion(&context->complete);
-	file->private_data = context;
-	return 0;
-}
-
-static int wfx_send_hif_msg_release(struct inode *inode, struct file *file)
-{
-	struct dbgfs_hif_msg *context = file->private_data;
-
-	kfree(context);
-	return 0;
-}
-
-static const struct file_operations wfx_send_hif_msg_fops = {
-	.open = wfx_send_hif_msg_open,
-	.release = wfx_send_hif_msg_release,
-	.write = wfx_send_hif_msg_write,
-	.read = wfx_send_hif_msg_read,
-};
-
-static int wfx_ps_timeout_set(void *data, u64 val)
-{
-	struct wfx_dev *wdev = (struct wfx_dev *)data;
-	struct wfx_vif *wvif;
-
-	wdev->force_ps_timeout = val;
-	wvif = NULL;
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
-		wfx_update_pm(wvif);
-	return 0;
-}
-
-static int wfx_ps_timeout_get(void *data, u64 *val)
-{
-	struct wfx_dev *wdev = (struct wfx_dev *)data;
-
-	*val = wdev->force_ps_timeout;
-	return 0;
-}
-
-DEFINE_DEBUGFS_ATTRIBUTE(wfx_ps_timeout_fops, wfx_ps_timeout_get, wfx_ps_timeout_set, "%lld\n");
-
-int wfx_debug_init(struct wfx_dev *wdev)
-{
-	struct dentry *d;
-
-	d = debugfs_create_dir("wfx", wdev->hw->wiphy->debugfsdir);
-	debugfs_create_file("counters", 0444, d, wdev, &wfx_counters_fops);
-	debugfs_create_file("rx_stats", 0444, d, wdev, &wfx_rx_stats_fops);
-	debugfs_create_file("tx_power_loop", 0444, d, wdev,
-			    &wfx_tx_power_loop_fops);
-	debugfs_create_file("send_pds", 0200, d, wdev, &wfx_send_pds_fops);
-	debugfs_create_file("send_hif_msg", 0600, d, wdev,
-			    &wfx_send_hif_msg_fops);
-	debugfs_create_file("ps_timeout", 0600, d, wdev, &wfx_ps_timeout_fops);
-
-	return 0;
-}
diff --git a/drivers/staging/wfx/debug.h b/drivers/staging/wfx/debug.h
deleted file mode 100644
index 6f2f84d64c9e..000000000000
--- a/drivers/staging/wfx/debug.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Debugfs interface.
- *
- * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
- * Copyright (c) 2011, ST-Ericsson
- */
-#ifndef WFX_DEBUG_H
-#define WFX_DEBUG_H
-
-struct wfx_dev;
-
-int wfx_debug_init(struct wfx_dev *wdev);
-
-const char *get_hif_name(unsigned long id);
-const char *get_mib_name(unsigned long id);
-const char *get_reg_name(unsigned long id);
-
-#endif /* WFX_DEBUG_H */
diff --git a/drivers/staging/wfx/fwio.c b/drivers/staging/wfx/fwio.c
deleted file mode 100644
index 1b8aec02d169..000000000000
--- a/drivers/staging/wfx/fwio.c
+++ /dev/null
@@ -1,405 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Firmware loading.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/firmware.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/bitfield.h>
-
-#include "fwio.h"
-#include "wfx.h"
-#include "hwio.h"
-
-// Addresses below are in SRAM area
-#define WFX_DNLD_FIFO             0x09004000
-#define     DNLD_BLOCK_SIZE           0x0400
-#define     DNLD_FIFO_SIZE            0x8000 // (32 * DNLD_BLOCK_SIZE)
-// Download Control Area (DCA)
-#define WFX_DCA_IMAGE_SIZE        0x0900C000
-#define WFX_DCA_PUT               0x0900C004
-#define WFX_DCA_GET               0x0900C008
-#define WFX_DCA_HOST_STATUS       0x0900C00C
-#define     HOST_READY                0x87654321
-#define     HOST_INFO_READ            0xA753BD99
-#define     HOST_UPLOAD_PENDING       0xABCDDCBA
-#define     HOST_UPLOAD_COMPLETE      0xD4C64A99
-#define     HOST_OK_TO_JUMP           0x174FC882
-#define WFX_DCA_NCP_STATUS        0x0900C010
-#define     NCP_NOT_READY             0x12345678
-#define     NCP_READY                 0x87654321
-#define     NCP_INFO_READY            0xBD53EF99
-#define     NCP_DOWNLOAD_PENDING      0xABCDDCBA
-#define     NCP_DOWNLOAD_COMPLETE     0xCAFEFECA
-#define     NCP_AUTH_OK               0xD4C64A99
-#define     NCP_AUTH_FAIL             0x174FC882
-#define     NCP_PUB_KEY_RDY           0x7AB41D19
-#define WFX_DCA_FW_SIGNATURE      0x0900C014
-#define     FW_SIGNATURE_SIZE         0x40
-#define WFX_DCA_FW_HASH           0x0900C054
-#define     FW_HASH_SIZE              0x08
-#define WFX_DCA_FW_VERSION        0x0900C05C
-#define     FW_VERSION_SIZE           0x04
-#define WFX_DCA_RESERVED          0x0900C060
-#define     DCA_RESERVED_SIZE         0x20
-#define WFX_STATUS_INFO           0x0900C080
-#define WFX_BOOTLOADER_LABEL      0x0900C084
-#define     BOOTLOADER_LABEL_SIZE     0x3C
-#define WFX_PTE_INFO              0x0900C0C0
-#define     PTE_INFO_KEYSET_IDX       0x0D
-#define     PTE_INFO_SIZE             0x10
-#define WFX_ERR_INFO              0x0900C0D0
-#define     ERR_INVALID_SEC_TYPE      0x05
-#define     ERR_SIG_VERIF_FAILED      0x0F
-#define     ERR_AES_CTRL_KEY          0x10
-#define     ERR_ECC_PUB_KEY           0x11
-#define     ERR_MAC_KEY               0x18
-
-#define DCA_TIMEOUT  50 // milliseconds
-#define WAKEUP_TIMEOUT 200 // milliseconds
-
-static const char * const fwio_errors[] = {
-	[ERR_INVALID_SEC_TYPE] = "Invalid section type or wrong encryption",
-	[ERR_SIG_VERIF_FAILED] = "Signature verification failed",
-	[ERR_AES_CTRL_KEY] = "AES control key not initialized",
-	[ERR_ECC_PUB_KEY] = "ECC public key not initialized",
-	[ERR_MAC_KEY] = "MAC key not initialized",
-};
-
-/*
- * request_firmware() allocate data using vmalloc(). It is not compatible with
- * underlying hardware that use DMA. Function below detect this case and
- * allocate a bounce buffer if necessary.
- *
- * Notice that, in doubt, you can enable CONFIG_DEBUG_SG to ask kernel to
- * detect this problem at runtime  (else, kernel silently fail).
- *
- * NOTE: it may also be possible to use 'pages' from struct firmware and avoid
- * bounce buffer
- */
-static int sram_write_dma_safe(struct wfx_dev *wdev, u32 addr, const u8 *buf,
-			       size_t len)
-{
-	int ret;
-	const u8 *tmp;
-
-	if (!virt_addr_valid(buf)) {
-		tmp = kmemdup(buf, len, GFP_KERNEL);
-		if (!tmp)
-			return -ENOMEM;
-	} else {
-		tmp = buf;
-	}
-	ret = sram_buf_write(wdev, addr, tmp, len);
-	if (tmp != buf)
-		kfree(tmp);
-	return ret;
-}
-
-static int get_firmware(struct wfx_dev *wdev, u32 keyset_chip,
-			const struct firmware **fw, int *file_offset)
-{
-	int keyset_file;
-	char filename[256];
-	const char *data;
-	int ret;
-
-	snprintf(filename, sizeof(filename), "%s_%02X.sec",
-		 wdev->pdata.file_fw, keyset_chip);
-	ret = firmware_request_nowarn(fw, filename, wdev->dev);
-	if (ret) {
-		dev_info(wdev->dev, "can't load %s, falling back to %s.sec\n",
-			 filename, wdev->pdata.file_fw);
-		snprintf(filename, sizeof(filename), "%s.sec",
-			 wdev->pdata.file_fw);
-		ret = request_firmware(fw, filename, wdev->dev);
-		if (ret) {
-			dev_err(wdev->dev, "can't load %s\n", filename);
-			*fw = NULL;
-			return ret;
-		}
-	}
-
-	data = (*fw)->data;
-	if (memcmp(data, "KEYSET", 6) != 0) {
-		// Legacy firmware format
-		*file_offset = 0;
-		keyset_file = 0x90;
-	} else {
-		*file_offset = 8;
-		keyset_file = (hex_to_bin(data[6]) * 16) | hex_to_bin(data[7]);
-		if (keyset_file < 0) {
-			dev_err(wdev->dev, "%s corrupted\n", filename);
-			release_firmware(*fw);
-			*fw = NULL;
-			return -EINVAL;
-		}
-	}
-	if (keyset_file != keyset_chip) {
-		dev_err(wdev->dev, "firmware keyset is incompatible with chip (file: 0x%02X, chip: 0x%02X)\n",
-			keyset_file, keyset_chip);
-		release_firmware(*fw);
-		*fw = NULL;
-		return -ENODEV;
-	}
-	wdev->keyset = keyset_file;
-	return 0;
-}
-
-static int wait_ncp_status(struct wfx_dev *wdev, u32 status)
-{
-	ktime_t now, start;
-	u32 reg;
-	int ret;
-
-	start = ktime_get();
-	for (;;) {
-		ret = sram_reg_read(wdev, WFX_DCA_NCP_STATUS, &reg);
-		if (ret < 0)
-			return -EIO;
-		now = ktime_get();
-		if (reg == status)
-			break;
-		if (ktime_after(now, ktime_add_ms(start, DCA_TIMEOUT)))
-			return -ETIMEDOUT;
-	}
-	if (ktime_compare(now, start))
-		dev_dbg(wdev->dev, "chip answer after %lldus\n",
-			ktime_us_delta(now, start));
-	else
-		dev_dbg(wdev->dev, "chip answer immediately\n");
-	return 0;
-}
-
-static int upload_firmware(struct wfx_dev *wdev, const u8 *data, size_t len)
-{
-	int ret;
-	u32 offs, bytes_done = 0;
-	ktime_t now, start;
-
-	if (len % DNLD_BLOCK_SIZE) {
-		dev_err(wdev->dev, "firmware size is not aligned. Buffer overrun will occur\n");
-		return -EIO;
-	}
-	offs = 0;
-	while (offs < len) {
-		start = ktime_get();
-		for (;;) {
-			now = ktime_get();
-			if (offs + DNLD_BLOCK_SIZE - bytes_done < DNLD_FIFO_SIZE)
-				break;
-			if (ktime_after(now, ktime_add_ms(start, DCA_TIMEOUT)))
-				return -ETIMEDOUT;
-			ret = sram_reg_read(wdev, WFX_DCA_GET, &bytes_done);
-			if (ret < 0)
-				return ret;
-		}
-		if (ktime_compare(now, start))
-			dev_dbg(wdev->dev, "answer after %lldus\n",
-				ktime_us_delta(now, start));
-
-		ret = sram_write_dma_safe(wdev, WFX_DNLD_FIFO +
-					  (offs % DNLD_FIFO_SIZE),
-					  data + offs, DNLD_BLOCK_SIZE);
-		if (ret < 0)
-			return ret;
-
-		// WFx seems to not support writing 0 in this register during
-		// first loop
-		offs += DNLD_BLOCK_SIZE;
-		ret = sram_reg_write(wdev, WFX_DCA_PUT, offs);
-		if (ret < 0)
-			return ret;
-	}
-	return 0;
-}
-
-static void print_boot_status(struct wfx_dev *wdev)
-{
-	u32 reg;
-
-	sram_reg_read(wdev, WFX_STATUS_INFO, &reg);
-	if (reg == 0x12345678)
-		return;
-	sram_reg_read(wdev, WFX_ERR_INFO, &reg);
-	if (reg < ARRAY_SIZE(fwio_errors) && fwio_errors[reg])
-		dev_info(wdev->dev, "secure boot: %s\n", fwio_errors[reg]);
-	else
-		dev_info(wdev->dev, "secure boot: Error %#02x\n", reg);
-}
-
-static int load_firmware_secure(struct wfx_dev *wdev)
-{
-	const struct firmware *fw = NULL;
-	int header_size;
-	int fw_offset;
-	ktime_t start;
-	u8 *buf;
-	int ret;
-
-	BUILD_BUG_ON(PTE_INFO_SIZE > BOOTLOADER_LABEL_SIZE);
-	buf = kmalloc(BOOTLOADER_LABEL_SIZE + 1, GFP_KERNEL);
-	if (!buf)
-		return -ENOMEM;
-
-	sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_READY);
-	ret = wait_ncp_status(wdev, NCP_INFO_READY);
-	if (ret)
-		goto error;
-
-	sram_buf_read(wdev, WFX_BOOTLOADER_LABEL, buf, BOOTLOADER_LABEL_SIZE);
-	buf[BOOTLOADER_LABEL_SIZE] = 0;
-	dev_dbg(wdev->dev, "bootloader: \"%s\"\n", buf);
-
-	sram_buf_read(wdev, WFX_PTE_INFO, buf, PTE_INFO_SIZE);
-	ret = get_firmware(wdev, buf[PTE_INFO_KEYSET_IDX], &fw, &fw_offset);
-	if (ret)
-		goto error;
-	header_size = fw_offset + FW_SIGNATURE_SIZE + FW_HASH_SIZE;
-
-	sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_INFO_READ);
-	ret = wait_ncp_status(wdev, NCP_READY);
-	if (ret)
-		goto error;
-
-	sram_reg_write(wdev, WFX_DNLD_FIFO, 0xFFFFFFFF); // Fifo init
-	sram_write_dma_safe(wdev, WFX_DCA_FW_VERSION, "\x01\x00\x00\x00",
-			    FW_VERSION_SIZE);
-	sram_write_dma_safe(wdev, WFX_DCA_FW_SIGNATURE, fw->data + fw_offset,
-			    FW_SIGNATURE_SIZE);
-	sram_write_dma_safe(wdev, WFX_DCA_FW_HASH,
-			    fw->data + fw_offset + FW_SIGNATURE_SIZE,
-			    FW_HASH_SIZE);
-	sram_reg_write(wdev, WFX_DCA_IMAGE_SIZE, fw->size - header_size);
-	sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_UPLOAD_PENDING);
-	ret = wait_ncp_status(wdev, NCP_DOWNLOAD_PENDING);
-	if (ret)
-		goto error;
-
-	start = ktime_get();
-	ret = upload_firmware(wdev, fw->data + header_size,
-			      fw->size - header_size);
-	if (ret)
-		goto error;
-	dev_dbg(wdev->dev, "firmware load after %lldus\n",
-		ktime_us_delta(ktime_get(), start));
-
-	sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_UPLOAD_COMPLETE);
-	ret = wait_ncp_status(wdev, NCP_AUTH_OK);
-	// Legacy ROM support
-	if (ret < 0)
-		ret = wait_ncp_status(wdev, NCP_PUB_KEY_RDY);
-	if (ret < 0)
-		goto error;
-	sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_OK_TO_JUMP);
-
-error:
-	kfree(buf);
-	if (fw)
-		release_firmware(fw);
-	if (ret)
-		print_boot_status(wdev);
-	return ret;
-}
-
-static int init_gpr(struct wfx_dev *wdev)
-{
-	int ret, i;
-	static const struct {
-		int index;
-		u32 value;
-	} gpr_init[] = {
-		{ 0x07, 0x208775 },
-		{ 0x08, 0x2EC020 },
-		{ 0x09, 0x3C3C3C },
-		{ 0x0B, 0x322C44 },
-		{ 0x0C, 0xA06497 },
-	};
-
-	for (i = 0; i < ARRAY_SIZE(gpr_init); i++) {
-		ret = igpr_reg_write(wdev, gpr_init[i].index,
-				     gpr_init[i].value);
-		if (ret < 0)
-			return ret;
-		dev_dbg(wdev->dev, "  index %02x: %08x\n",
-			gpr_init[i].index, gpr_init[i].value);
-	}
-	return 0;
-}
-
-int wfx_init_device(struct wfx_dev *wdev)
-{
-	int ret;
-	int hw_revision, hw_type;
-	int wakeup_timeout = 50; // ms
-	ktime_t now, start;
-	u32 reg;
-
-	reg = CFG_DIRECT_ACCESS_MODE | CFG_CPU_RESET | CFG_BYTE_ORDER_ABCD;
-	if (wdev->pdata.use_rising_clk)
-		reg |= CFG_CLK_RISE_EDGE;
-	ret = config_reg_write(wdev, reg);
-	if (ret < 0) {
-		dev_err(wdev->dev, "bus returned an error during first write access. Host configuration error?\n");
-		return -EIO;
-	}
-
-	ret = config_reg_read(wdev, &reg);
-	if (ret < 0) {
-		dev_err(wdev->dev, "bus returned an error during first read access. Bus configuration error?\n");
-		return -EIO;
-	}
-	if (reg == 0 || reg == ~0) {
-		dev_err(wdev->dev, "chip mute. Bus configuration error or chip wasn't reset?\n");
-		return -EIO;
-	}
-	dev_dbg(wdev->dev, "initial config register value: %08x\n", reg);
-
-	hw_revision = FIELD_GET(CFG_DEVICE_ID_MAJOR, reg);
-	if (hw_revision == 0) {
-		dev_err(wdev->dev, "bad hardware revision number: %d\n",
-			hw_revision);
-		return -ENODEV;
-	}
-	hw_type = FIELD_GET(CFG_DEVICE_ID_TYPE, reg);
-	if (hw_type == 1) {
-		dev_notice(wdev->dev, "development hardware detected\n");
-		wakeup_timeout = 2000;
-	}
-
-	ret = init_gpr(wdev);
-	if (ret < 0)
-		return ret;
-
-	ret = control_reg_write(wdev, CTRL_WLAN_WAKEUP);
-	if (ret < 0)
-		return -EIO;
-	start = ktime_get();
-	for (;;) {
-		ret = control_reg_read(wdev, &reg);
-		now = ktime_get();
-		if (reg & CTRL_WLAN_READY)
-			break;
-		if (ktime_after(now, ktime_add_ms(start, wakeup_timeout))) {
-			dev_err(wdev->dev, "chip didn't wake up. Chip wasn't reset?\n");
-			return -ETIMEDOUT;
-		}
-	}
-	dev_dbg(wdev->dev, "chip wake up after %lldus\n",
-		ktime_us_delta(now, start));
-
-	ret = config_reg_write_bits(wdev, CFG_CPU_RESET, 0);
-	if (ret < 0)
-		return ret;
-	ret = load_firmware_secure(wdev);
-	if (ret < 0)
-		return ret;
-	return config_reg_write_bits(wdev,
-				     CFG_DIRECT_ACCESS_MODE |
-				     CFG_IRQ_ENABLE_DATA |
-				     CFG_IRQ_ENABLE_WRDY,
-				     CFG_IRQ_ENABLE_DATA);
-}
diff --git a/drivers/staging/wfx/fwio.h b/drivers/staging/wfx/fwio.h
deleted file mode 100644
index 6028f92503fe..000000000000
--- a/drivers/staging/wfx/fwio.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Firmware loading.
- *
- * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_FWIO_H
-#define WFX_FWIO_H
-
-struct wfx_dev;
-
-int wfx_init_device(struct wfx_dev *wdev);
-
-#endif /* WFX_FWIO_H */
diff --git a/drivers/staging/wfx/hif_api_cmd.h b/drivers/staging/wfx/hif_api_cmd.h
deleted file mode 100644
index 11bc1a58edae..000000000000
--- a/drivers/staging/wfx/hif_api_cmd.h
+++ /dev/null
@@ -1,553 +0,0 @@
-/* SPDX-License-Identifier: Apache-2.0 */
-/*
- * WFx hardware interface definitions
- *
- * Copyright (c) 2018-2020, Silicon Laboratories Inc.
- */
-
-#ifndef WFX_HIF_API_CMD_H
-#define WFX_HIF_API_CMD_H
-
-#include <linux/ieee80211.h>
-
-#include "hif_api_general.h"
-
-enum hif_requests_ids {
-	HIF_REQ_ID_RESET                = 0x0a,
-	HIF_REQ_ID_READ_MIB             = 0x05,
-	HIF_REQ_ID_WRITE_MIB            = 0x06,
-	HIF_REQ_ID_START_SCAN           = 0x07,
-	HIF_REQ_ID_STOP_SCAN            = 0x08,
-	HIF_REQ_ID_TX                   = 0x04,
-	HIF_REQ_ID_JOIN                 = 0x0b,
-	HIF_REQ_ID_SET_PM_MODE          = 0x10,
-	HIF_REQ_ID_SET_BSS_PARAMS       = 0x11,
-	HIF_REQ_ID_ADD_KEY              = 0x0c,
-	HIF_REQ_ID_REMOVE_KEY           = 0x0d,
-	HIF_REQ_ID_EDCA_QUEUE_PARAMS    = 0x13,
-	HIF_REQ_ID_START                = 0x17,
-	HIF_REQ_ID_BEACON_TRANSMIT      = 0x18,
-	HIF_REQ_ID_UPDATE_IE            = 0x1b,
-	HIF_REQ_ID_MAP_LINK             = 0x1c,
-};
-
-enum hif_confirmations_ids {
-	HIF_CNF_ID_RESET                = 0x0a,
-	HIF_CNF_ID_READ_MIB             = 0x05,
-	HIF_CNF_ID_WRITE_MIB            = 0x06,
-	HIF_CNF_ID_START_SCAN           = 0x07,
-	HIF_CNF_ID_STOP_SCAN            = 0x08,
-	HIF_CNF_ID_TX                   = 0x04,
-	HIF_CNF_ID_MULTI_TRANSMIT       = 0x1e,
-	HIF_CNF_ID_JOIN                 = 0x0b,
-	HIF_CNF_ID_SET_PM_MODE          = 0x10,
-	HIF_CNF_ID_SET_BSS_PARAMS       = 0x11,
-	HIF_CNF_ID_ADD_KEY              = 0x0c,
-	HIF_CNF_ID_REMOVE_KEY           = 0x0d,
-	HIF_CNF_ID_EDCA_QUEUE_PARAMS    = 0x13,
-	HIF_CNF_ID_START                = 0x17,
-	HIF_CNF_ID_BEACON_TRANSMIT      = 0x18,
-	HIF_CNF_ID_UPDATE_IE            = 0x1b,
-	HIF_CNF_ID_MAP_LINK             = 0x1c,
-};
-
-enum hif_indications_ids {
-	HIF_IND_ID_RX                   = 0x84,
-	HIF_IND_ID_SCAN_CMPL            = 0x86,
-	HIF_IND_ID_JOIN_COMPLETE        = 0x8f,
-	HIF_IND_ID_SET_PM_MODE_CMPL     = 0x89,
-	HIF_IND_ID_SUSPEND_RESUME_TX    = 0x8c,
-	HIF_IND_ID_EVENT                = 0x85
-};
-
-struct hif_req_reset {
-	u8     reset_stat:1;
-	u8     reset_all_int:1;
-	u8     reserved1:6;
-	u8     reserved2[3];
-} __packed;
-
-struct hif_cnf_reset {
-	__le32 status;
-} __packed;
-
-struct hif_req_read_mib {
-	__le16 mib_id;
-	__le16 reserved;
-} __packed;
-
-struct hif_cnf_read_mib {
-	__le32 status;
-	__le16 mib_id;
-	__le16 length;
-	u8     mib_data[];
-} __packed;
-
-struct hif_req_write_mib {
-	__le16 mib_id;
-	__le16 length;
-	u8     mib_data[];
-} __packed;
-
-struct hif_cnf_write_mib {
-	__le32 status;
-} __packed;
-
-struct hif_req_update_ie {
-	u8     beacon:1;
-	u8     probe_resp:1;
-	u8     probe_req:1;
-	u8     reserved1:5;
-	u8     reserved2;
-	__le16 num_ies;
-	struct element ie[];
-} __packed;
-
-struct hif_cnf_update_ie {
-	__le32 status;
-} __packed;
-
-struct hif_ssid_def {
-	__le32 ssid_length;
-	u8     ssid[IEEE80211_MAX_SSID_LEN];
-} __packed;
-
-#define HIF_API_MAX_NB_SSIDS                           2
-#define HIF_API_MAX_NB_CHANNELS                       14
-
-struct hif_req_start_scan_alt {
-	u8     band;
-	u8     maintain_current_bss:1;
-	u8     periodic:1;
-	u8     reserved1:6;
-	u8     disallow_ps:1;
-	u8     reserved2:1;
-	u8     short_preamble:1;
-	u8     reserved3:5;
-	u8     max_transmit_rate;
-	__le16 periodic_interval;
-	u8     reserved4;
-	s8     periodic_rssi_thr;
-	u8     num_of_probe_requests;
-	u8     probe_delay;
-	u8     num_of_ssids;
-	u8     num_of_channels;
-	__le32 min_channel_time;
-	__le32 max_channel_time;
-	__le32 tx_power_level; // signed value
-	struct hif_ssid_def ssid_def[HIF_API_MAX_NB_SSIDS];
-	u8     channel_list[];
-} __packed;
-
-struct hif_cnf_start_scan {
-	__le32 status;
-} __packed;
-
-struct hif_cnf_stop_scan {
-	__le32 status;
-} __packed;
-
-enum hif_pm_mode_status {
-	HIF_PM_MODE_ACTIVE                         = 0x0,
-	HIF_PM_MODE_PS                             = 0x1,
-	HIF_PM_MODE_UNDETERMINED                   = 0x2
-};
-
-struct hif_ind_scan_cmpl {
-	__le32 status;
-	u8     pm_mode;
-	u8     num_channels_completed;
-	__le16 reserved;
-} __packed;
-
-enum hif_queue_id {
-	HIF_QUEUE_ID_BACKGROUND                    = 0x0,
-	HIF_QUEUE_ID_BESTEFFORT                    = 0x1,
-	HIF_QUEUE_ID_VIDEO                         = 0x2,
-	HIF_QUEUE_ID_VOICE                         = 0x3
-};
-
-enum hif_frame_format {
-	HIF_FRAME_FORMAT_NON_HT                    = 0x0,
-	HIF_FRAME_FORMAT_MIXED_FORMAT_HT           = 0x1,
-	HIF_FRAME_FORMAT_GF_HT_11N                 = 0x2
-};
-
-struct hif_req_tx {
-	// packet_id is not interpreted by the device, so it is not necessary to
-	// declare it little endian
-	u32    packet_id;
-	u8     max_tx_rate;
-	u8     queue_id:2;
-	u8     peer_sta_id:4;
-	u8     reserved1:2;
-	u8     more:1;
-	u8     fc_offset:3;
-	u8     after_dtim:1;
-	u8     reserved2:3;
-	u8     start_exp:1;
-	u8     reserved3:3;
-	u8     retry_policy_index:4;
-	__le32 reserved4;
-	__le32 expire_time;
-	u8     frame_format:4;
-	u8     fec_coding:1;
-	u8     short_gi:1;
-	u8     reserved5:1;
-	u8     stbc:1;
-	u8     reserved6;
-	u8     aggregation:1;
-	u8     reserved7:7;
-	u8     reserved8;
-	u8     frame[];
-} __packed;
-
-enum hif_qos_ackplcy {
-	HIF_QOS_ACKPLCY_NORMAL                         = 0x0,
-	HIF_QOS_ACKPLCY_TXNOACK                        = 0x1,
-	HIF_QOS_ACKPLCY_NOEXPACK                       = 0x2,
-	HIF_QOS_ACKPLCY_BLCKACK                        = 0x3
-};
-
-struct hif_cnf_tx {
-	__le32 status;
-	// packet_id is copied from struct hif_req_tx without been interpreted
-	// by the device, so it is not necessary to declare it little endian
-	u32    packet_id;
-	u8     txed_rate;
-	u8     ack_failures;
-	u8     aggr:1;
-	u8     requeue:1;
-	u8     ack_policy:2;
-	u8     txop_limit:1;
-	u8     reserved1:3;
-	u8     reserved2;
-	__le32 media_delay;
-	__le32 tx_queue_delay;
-} __packed;
-
-struct hif_cnf_multi_transmit {
-	u8     num_tx_confs;
-	u8     reserved[3];
-	struct hif_cnf_tx tx_conf_payload[];
-} __packed;
-
-enum hif_ri_flags_encrypt {
-	HIF_RI_FLAGS_UNENCRYPTED                   = 0x0,
-	HIF_RI_FLAGS_WEP_ENCRYPTED                 = 0x1,
-	HIF_RI_FLAGS_TKIP_ENCRYPTED                = 0x2,
-	HIF_RI_FLAGS_AES_ENCRYPTED                 = 0x3,
-	HIF_RI_FLAGS_WAPI_ENCRYPTED                = 0x4
-};
-
-struct hif_ind_rx {
-	__le32 status;
-	u8     channel_number;
-	u8     reserved1;
-	u8     rxed_rate;
-	u8     rcpi_rssi;
-	u8     encryp:3;
-	u8     in_aggr:1;
-	u8     first_aggr:1;
-	u8     last_aggr:1;
-	u8     defrag:1;
-	u8     beacon:1;
-	u8     tim:1;
-	u8     bitmap:1;
-	u8     match_ssid:1;
-	u8     match_bssid:1;
-	u8     more:1;
-	u8     reserved2:1;
-	u8     ht:1;
-	u8     stbc:1;
-	u8     match_uc_addr:1;
-	u8     match_mc_addr:1;
-	u8     match_bc_addr:1;
-	u8     key_type:1;
-	u8     key_index:4;
-	u8     reserved3:1;
-	u8     peer_sta_id:4;
-	u8     reserved4:2;
-	u8     reserved5:1;
-	u8     frame[];
-} __packed;
-
-struct hif_req_edca_queue_params {
-	u8     queue_id;
-	u8     reserved1;
-	u8     aifsn;
-	u8     reserved2;
-	__le16 cw_min;
-	__le16 cw_max;
-	__le16 tx_op_limit;
-	__le16 allowed_medium_time;
-	__le32 reserved3;
-} __packed;
-
-struct hif_cnf_edca_queue_params {
-	__le32 status;
-} __packed;
-
-struct hif_req_join {
-	u8     infrastructure_bss_mode:1;
-	u8     reserved1:7;
-	u8     band;
-	u8     channel_number;
-	u8     reserved2;
-	u8     bssid[ETH_ALEN];
-	__le16 atim_window;
-	u8     short_preamble:1;
-	u8     reserved3:7;
-	u8     probe_for_join;
-	u8     reserved4;
-	u8     reserved5:2;
-	u8     force_no_beacon:1;
-	u8     force_with_ind:1;
-	u8     reserved6:4;
-	__le32 ssid_length;
-	u8     ssid[IEEE80211_MAX_SSID_LEN];
-	__le32 beacon_interval;
-	__le32 basic_rate_set;
-} __packed;
-
-struct hif_cnf_join {
-	__le32 status;
-} __packed;
-
-struct hif_ind_join_complete {
-	__le32 status;
-} __packed;
-
-struct hif_req_set_bss_params {
-	u8     lost_count_only:1;
-	u8     reserved:7;
-	u8     beacon_lost_count;
-	__le16 aid;
-	__le32 operational_rate_set;
-} __packed;
-
-struct hif_cnf_set_bss_params {
-	__le32 status;
-} __packed;
-
-struct hif_req_set_pm_mode {
-	u8     enter_psm:1;
-	u8     reserved:6;
-	u8     fast_psm:1;
-	u8     fast_psm_idle_period;
-	u8     ap_psm_change_period;
-	u8     min_auto_ps_poll_period;
-} __packed;
-
-struct hif_cnf_set_pm_mode {
-	__le32 status;
-} __packed;
-
-struct hif_ind_set_pm_mode_cmpl {
-	__le32 status;
-	u8     pm_mode;
-	u8     reserved[3];
-} __packed;
-
-struct hif_req_start {
-	u8     mode;
-	u8     band;
-	u8     channel_number;
-	u8     reserved1;
-	__le32 reserved2;
-	__le32 beacon_interval;
-	u8     dtim_period;
-	u8     short_preamble:1;
-	u8     reserved3:7;
-	u8     reserved4;
-	u8     ssid_length;
-	u8     ssid[IEEE80211_MAX_SSID_LEN];
-	__le32 basic_rate_set;
-} __packed;
-
-struct hif_cnf_start {
-	__le32 status;
-} __packed;
-
-struct hif_req_beacon_transmit {
-	u8     enable_beaconing;
-	u8     reserved[3];
-} __packed;
-
-struct hif_cnf_beacon_transmit {
-	__le32 status;
-} __packed;
-
-#define HIF_LINK_ID_MAX            14
-#define HIF_LINK_ID_NOT_ASSOCIATED (HIF_LINK_ID_MAX + 1)
-
-struct hif_req_map_link {
-	u8     mac_addr[ETH_ALEN];
-	u8     unmap:1;
-	u8     mfpc:1;
-	u8     reserved:6;
-	u8     peer_sta_id;
-} __packed;
-
-struct hif_cnf_map_link {
-	__le32 status;
-} __packed;
-
-struct hif_ind_suspend_resume_tx {
-	u8     resume:1;
-	u8     reserved1:2;
-	u8     bc_mc_only:1;
-	u8     reserved2:4;
-	u8     reserved3;
-	__le16 peer_sta_set;
-} __packed;
-
-
-#define MAX_KEY_ENTRIES         24
-#define HIF_API_WEP_KEY_DATA_SIZE                       16
-#define HIF_API_TKIP_KEY_DATA_SIZE                      16
-#define HIF_API_RX_MIC_KEY_SIZE                         8
-#define HIF_API_TX_MIC_KEY_SIZE                         8
-#define HIF_API_AES_KEY_DATA_SIZE                       16
-#define HIF_API_WAPI_KEY_DATA_SIZE                      16
-#define HIF_API_MIC_KEY_DATA_SIZE                       16
-#define HIF_API_IGTK_KEY_DATA_SIZE                      16
-#define HIF_API_RX_SEQUENCE_COUNTER_SIZE                8
-#define HIF_API_IPN_SIZE                                8
-
-enum hif_key_type {
-	HIF_KEY_TYPE_WEP_DEFAULT                   = 0x0,
-	HIF_KEY_TYPE_WEP_PAIRWISE                  = 0x1,
-	HIF_KEY_TYPE_TKIP_GROUP                    = 0x2,
-	HIF_KEY_TYPE_TKIP_PAIRWISE                 = 0x3,
-	HIF_KEY_TYPE_AES_GROUP                     = 0x4,
-	HIF_KEY_TYPE_AES_PAIRWISE                  = 0x5,
-	HIF_KEY_TYPE_WAPI_GROUP                    = 0x6,
-	HIF_KEY_TYPE_WAPI_PAIRWISE                 = 0x7,
-	HIF_KEY_TYPE_IGTK_GROUP                    = 0x8,
-	HIF_KEY_TYPE_NONE                          = 0x9
-};
-
-struct hif_wep_pairwise_key {
-	u8     peer_address[ETH_ALEN];
-	u8     reserved;
-	u8     key_length;
-	u8     key_data[HIF_API_WEP_KEY_DATA_SIZE];
-} __packed;
-
-struct hif_wep_group_key {
-	u8     key_id;
-	u8     key_length;
-	u8     reserved[2];
-	u8     key_data[HIF_API_WEP_KEY_DATA_SIZE];
-} __packed;
-
-struct hif_tkip_pairwise_key {
-	u8     peer_address[ETH_ALEN];
-	u8     reserved[2];
-	u8     tkip_key_data[HIF_API_TKIP_KEY_DATA_SIZE];
-	u8     rx_mic_key[HIF_API_RX_MIC_KEY_SIZE];
-	u8     tx_mic_key[HIF_API_TX_MIC_KEY_SIZE];
-} __packed;
-
-struct hif_tkip_group_key {
-	u8     tkip_key_data[HIF_API_TKIP_KEY_DATA_SIZE];
-	u8     rx_mic_key[HIF_API_RX_MIC_KEY_SIZE];
-	u8     key_id;
-	u8     reserved[3];
-	u8     rx_sequence_counter[HIF_API_RX_SEQUENCE_COUNTER_SIZE];
-} __packed;
-
-struct hif_aes_pairwise_key {
-	u8     peer_address[ETH_ALEN];
-	u8     reserved[2];
-	u8     aes_key_data[HIF_API_AES_KEY_DATA_SIZE];
-} __packed;
-
-struct hif_aes_group_key {
-	u8     aes_key_data[HIF_API_AES_KEY_DATA_SIZE];
-	u8     key_id;
-	u8     reserved[3];
-	u8     rx_sequence_counter[HIF_API_RX_SEQUENCE_COUNTER_SIZE];
-} __packed;
-
-struct hif_wapi_pairwise_key {
-	u8     peer_address[ETH_ALEN];
-	u8     key_id;
-	u8     reserved;
-	u8     wapi_key_data[HIF_API_WAPI_KEY_DATA_SIZE];
-	u8     mic_key_data[HIF_API_MIC_KEY_DATA_SIZE];
-} __packed;
-
-struct hif_wapi_group_key {
-	u8     wapi_key_data[HIF_API_WAPI_KEY_DATA_SIZE];
-	u8     mic_key_data[HIF_API_MIC_KEY_DATA_SIZE];
-	u8     key_id;
-	u8     reserved[3];
-} __packed;
-
-struct hif_igtk_group_key {
-	u8     igtk_key_data[HIF_API_IGTK_KEY_DATA_SIZE];
-	u8     key_id;
-	u8     reserved[3];
-	u8     ipn[HIF_API_IPN_SIZE];
-} __packed;
-
-struct hif_req_add_key {
-	u8     type;
-	u8     entry_index;
-	u8     int_id:2;
-	u8     reserved1:6;
-	u8     reserved2;
-	union {
-		struct hif_wep_pairwise_key  wep_pairwise_key;
-		struct hif_wep_group_key     wep_group_key;
-		struct hif_tkip_pairwise_key tkip_pairwise_key;
-		struct hif_tkip_group_key    tkip_group_key;
-		struct hif_aes_pairwise_key  aes_pairwise_key;
-		struct hif_aes_group_key     aes_group_key;
-		struct hif_wapi_pairwise_key wapi_pairwise_key;
-		struct hif_wapi_group_key    wapi_group_key;
-		struct hif_igtk_group_key    igtk_group_key;
-	} key;
-} __packed;
-
-struct hif_cnf_add_key {
-	__le32 status;
-} __packed;
-
-struct hif_req_remove_key {
-	u8     entry_index;
-	u8     reserved[3];
-} __packed;
-
-struct hif_cnf_remove_key {
-	__le32 status;
-} __packed;
-
-enum hif_event_ind {
-	HIF_EVENT_IND_BSSLOST                      = 0x1,
-	HIF_EVENT_IND_BSSREGAINED                  = 0x2,
-	HIF_EVENT_IND_RCPI_RSSI                    = 0x3,
-	HIF_EVENT_IND_PS_MODE_ERROR                = 0x4,
-	HIF_EVENT_IND_INACTIVITY                   = 0x5
-};
-
-enum hif_ps_mode_error {
-	HIF_PS_ERROR_NO_ERROR                      = 0,
-	HIF_PS_ERROR_AP_NOT_RESP_TO_POLL           = 1,
-	HIF_PS_ERROR_AP_NOT_RESP_TO_UAPSD_TRIGGER  = 2,
-	HIF_PS_ERROR_AP_SENT_UNICAST_IN_DOZE       = 3,
-	HIF_PS_ERROR_AP_NO_DATA_AFTER_TIM          = 4
-};
-
-struct hif_ind_event {
-	__le32 event_id;
-	union {
-		u8     rcpi_rssi;
-		__le32 ps_mode_error;
-		__le32 peer_sta_set;
-	} event_data;
-} __packed;
-
-#endif
diff --git a/drivers/staging/wfx/hif_api_general.h b/drivers/staging/wfx/hif_api_general.h
deleted file mode 100644
index 24188945718d..000000000000
--- a/drivers/staging/wfx/hif_api_general.h
+++ /dev/null
@@ -1,267 +0,0 @@
-/* SPDX-License-Identifier: Apache-2.0 */
-/*
- * WFx hardware interface definitions
- *
- * Copyright (c) 2018-2020, Silicon Laboratories Inc.
- */
-
-#ifndef WFX_HIF_API_GENERAL_H
-#define WFX_HIF_API_GENERAL_H
-
-#ifdef __KERNEL__
-#include <linux/types.h>
-#include <linux/if_ether.h>
-#else
-#include <net/ethernet.h>
-#include <stdint.h>
-#define __packed __attribute__((__packed__))
-#endif
-
-#define HIF_ID_IS_INDICATION      0x80
-#define HIF_COUNTER_MAX           7
-
-struct hif_msg {
-	__le16 len;
-	u8     id;
-	u8     reserved:1;
-	u8     interface:2;
-	u8     seqnum:3;
-	u8     encrypted:2;
-	u8     body[];
-} __packed;
-
-enum hif_general_requests_ids {
-	HIF_REQ_ID_CONFIGURATION        = 0x09,
-	HIF_REQ_ID_CONTROL_GPIO         = 0x26,
-	HIF_REQ_ID_SET_SL_MAC_KEY       = 0x27,
-	HIF_REQ_ID_SL_EXCHANGE_PUB_KEYS = 0x28,
-	HIF_REQ_ID_SL_CONFIGURE         = 0x29,
-	HIF_REQ_ID_PREVENT_ROLLBACK     = 0x2a,
-	HIF_REQ_ID_PTA_SETTINGS         = 0x2b,
-	HIF_REQ_ID_PTA_PRIORITY         = 0x2c,
-	HIF_REQ_ID_PTA_STATE            = 0x2d,
-	HIF_REQ_ID_SHUT_DOWN            = 0x32,
-};
-
-enum hif_general_confirmations_ids {
-	HIF_CNF_ID_CONFIGURATION        = 0x09,
-	HIF_CNF_ID_CONTROL_GPIO         = 0x26,
-	HIF_CNF_ID_SET_SL_MAC_KEY       = 0x27,
-	HIF_CNF_ID_SL_EXCHANGE_PUB_KEYS = 0x28,
-	HIF_CNF_ID_SL_CONFIGURE         = 0x29,
-	HIF_CNF_ID_PREVENT_ROLLBACK     = 0x2a,
-	HIF_CNF_ID_PTA_SETTINGS         = 0x2b,
-	HIF_CNF_ID_PTA_PRIORITY         = 0x2c,
-	HIF_CNF_ID_PTA_STATE            = 0x2d,
-	HIF_CNF_ID_SHUT_DOWN            = 0x32,
-};
-
-enum hif_general_indications_ids {
-	HIF_IND_ID_EXCEPTION            = 0xe0,
-	HIF_IND_ID_STARTUP              = 0xe1,
-	HIF_IND_ID_WAKEUP               = 0xe2,
-	HIF_IND_ID_GENERIC              = 0xe3,
-	HIF_IND_ID_ERROR                = 0xe4,
-	HIF_IND_ID_SL_EXCHANGE_PUB_KEYS = 0xe5
-};
-
-#define HIF_STATUS_SUCCESS                         (cpu_to_le32(0x0000))
-#define HIF_STATUS_FAIL                            (cpu_to_le32(0x0001))
-#define HIF_STATUS_INVALID_PARAMETER               (cpu_to_le32(0x0002))
-#define HIF_STATUS_WARNING                         (cpu_to_le32(0x0003))
-#define HIF_STATUS_UNKNOWN_REQUEST                 (cpu_to_le32(0x0004))
-#define HIF_STATUS_RX_FAIL_DECRYPT                 (cpu_to_le32(0x0010))
-#define HIF_STATUS_RX_FAIL_MIC                     (cpu_to_le32(0x0011))
-#define HIF_STATUS_RX_FAIL_NO_KEY                  (cpu_to_le32(0x0012))
-#define HIF_STATUS_TX_FAIL_RETRIES                 (cpu_to_le32(0x0013))
-#define HIF_STATUS_TX_FAIL_TIMEOUT                 (cpu_to_le32(0x0014))
-#define HIF_STATUS_TX_FAIL_REQUEUE                 (cpu_to_le32(0x0015))
-#define HIF_STATUS_REFUSED                         (cpu_to_le32(0x0016))
-#define HIF_STATUS_BUSY                            (cpu_to_le32(0x0017))
-#define HIF_STATUS_SLK_SET_KEY_SUCCESS             (cpu_to_le32(0x005A))
-#define HIF_STATUS_SLK_SET_KEY_ALREADY_BURNED      (cpu_to_le32(0x006B))
-#define HIF_STATUS_SLK_SET_KEY_DISALLOWED_MODE     (cpu_to_le32(0x007C))
-#define HIF_STATUS_SLK_SET_KEY_UNKNOWN_MODE        (cpu_to_le32(0x008D))
-#define HIF_STATUS_SLK_NEGO_SUCCESS                (cpu_to_le32(0x009E))
-#define HIF_STATUS_SLK_NEGO_FAILED                 (cpu_to_le32(0x00AF))
-#define HIF_STATUS_ROLLBACK_SUCCESS                (cpu_to_le32(0x1234))
-#define HIF_STATUS_ROLLBACK_FAIL                   (cpu_to_le32(0x1256))
-
-enum hif_api_rate_index {
-	API_RATE_INDEX_B_1MBPS     = 0,
-	API_RATE_INDEX_B_2MBPS     = 1,
-	API_RATE_INDEX_B_5P5MBPS   = 2,
-	API_RATE_INDEX_B_11MBPS    = 3,
-	API_RATE_INDEX_PBCC_22MBPS = 4,
-	API_RATE_INDEX_PBCC_33MBPS = 5,
-	API_RATE_INDEX_G_6MBPS     = 6,
-	API_RATE_INDEX_G_9MBPS     = 7,
-	API_RATE_INDEX_G_12MBPS    = 8,
-	API_RATE_INDEX_G_18MBPS    = 9,
-	API_RATE_INDEX_G_24MBPS    = 10,
-	API_RATE_INDEX_G_36MBPS    = 11,
-	API_RATE_INDEX_G_48MBPS    = 12,
-	API_RATE_INDEX_G_54MBPS    = 13,
-	API_RATE_INDEX_N_6P5MBPS   = 14,
-	API_RATE_INDEX_N_13MBPS    = 15,
-	API_RATE_INDEX_N_19P5MBPS  = 16,
-	API_RATE_INDEX_N_26MBPS    = 17,
-	API_RATE_INDEX_N_39MBPS    = 18,
-	API_RATE_INDEX_N_52MBPS    = 19,
-	API_RATE_INDEX_N_58P5MBPS  = 20,
-	API_RATE_INDEX_N_65MBPS    = 21,
-	API_RATE_NUM_ENTRIES       = 22
-};
-
-enum hif_fw_type {
-	HIF_FW_TYPE_ETF  = 0x0,
-	HIF_FW_TYPE_WFM  = 0x1,
-	HIF_FW_TYPE_WSM  = 0x2
-};
-
-struct hif_ind_startup {
-	// As the others, this struct is interpreted as little endian by the
-	// device. However, this struct is also used by the driver. We prefer to
-	// declare it in native order and doing byte swap on reception.
-	__le32 status;
-	u16    hardware_id;
-	u8     opn[14];
-	u8     uid[8];
-	u16    num_inp_ch_bufs;
-	u16    size_inp_ch_buf;
-	u8     num_links_ap;
-	u8     num_interfaces;
-	u8     mac_addr[2][ETH_ALEN];
-	u8     api_version_minor;
-	u8     api_version_major;
-	u8     link_mode:2;
-	u8     reserved1:6;
-	u8     reserved2;
-	u8     reserved3;
-	u8     reserved4;
-	u8     firmware_build;
-	u8     firmware_minor;
-	u8     firmware_major;
-	u8     firmware_type;
-	u8     disabled_channel_list[2];
-	u8     region_sel_mode:4;
-	u8     reserved5:4;
-	u8     phy1_region:3;
-	u8     phy0_region:3;
-	u8     otp_phy_ver:2;
-	u32    supported_rate_mask;
-	u8     firmware_label[128];
-} __packed;
-
-struct hif_ind_wakeup {
-} __packed;
-
-struct hif_req_configuration {
-	__le16 length;
-	u8     pds_data[];
-} __packed;
-
-struct hif_cnf_configuration {
-	__le32 status;
-} __packed;
-
-enum hif_gpio_mode {
-	HIF_GPIO_MODE_D0       = 0x0,
-	HIF_GPIO_MODE_D1       = 0x1,
-	HIF_GPIO_MODE_OD0      = 0x2,
-	HIF_GPIO_MODE_OD1      = 0x3,
-	HIF_GPIO_MODE_TRISTATE = 0x4,
-	HIF_GPIO_MODE_TOGGLE   = 0x5,
-	HIF_GPIO_MODE_READ     = 0x6
-};
-
-struct hif_req_control_gpio {
-	u8     gpio_label;
-	u8     gpio_mode;
-} __packed;
-
-struct hif_cnf_control_gpio {
-	__le32 status;
-	__le32 value;
-} __packed;
-
-enum hif_generic_indication_type {
-	HIF_GENERIC_INDICATION_TYPE_RAW                = 0x0,
-	HIF_GENERIC_INDICATION_TYPE_STRING             = 0x1,
-	HIF_GENERIC_INDICATION_TYPE_RX_STATS           = 0x2,
-	HIF_GENERIC_INDICATION_TYPE_TX_POWER_LOOP_INFO = 0x3,
-};
-
-struct hif_rx_stats {
-	__le32 nb_rx_frame;
-	__le32 nb_crc_frame;
-	__le32 per_total;
-	__le32 throughput;
-	__le32 nb_rx_by_rate[API_RATE_NUM_ENTRIES];
-	__le16 per[API_RATE_NUM_ENTRIES];
-	__le16 snr[API_RATE_NUM_ENTRIES];  // signed value
-	__le16 rssi[API_RATE_NUM_ENTRIES]; // signed value
-	__le16 cfo[API_RATE_NUM_ENTRIES];  // signed value
-	__le32 date;
-	__le32 pwr_clk_freq;
-	u8     is_ext_pwr_clk;
-	s8     current_temp;
-} __packed;
-
-struct hif_tx_power_loop_info {
-	__le16 tx_gain_dig;
-	__le16 tx_gain_pa;
-	__le16 target_pout; // signed value
-	__le16 p_estimation; // signed value
-	__le16 vpdet;
-	u8     measurement_index;
-	u8     reserved;
-} __packed;
-
-struct hif_ind_generic {
-	__le32 type;
-	union {
-		struct hif_rx_stats rx_stats;
-		struct hif_tx_power_loop_info tx_power_loop_info;
-	} data;
-} __packed;
-
-enum hif_error {
-	HIF_ERROR_FIRMWARE_ROLLBACK           = 0x00,
-	HIF_ERROR_FIRMWARE_DEBUG_ENABLED      = 0x01,
-	HIF_ERROR_SLK_OUTDATED_SESSION_KEY    = 0x02,
-	HIF_ERROR_SLK_SESSION_KEY             = 0x03,
-	HIF_ERROR_OOR_VOLTAGE                 = 0x04,
-	HIF_ERROR_PDS_PAYLOAD                 = 0x05,
-	HIF_ERROR_OOR_TEMPERATURE             = 0x06,
-	HIF_ERROR_SLK_REQ_DURING_KEY_EXCHANGE = 0x07,
-	HIF_ERROR_SLK_MULTI_TX_UNSUPPORTED    = 0x08,
-	HIF_ERROR_SLK_OVERFLOW                = 0x09,
-	HIF_ERROR_SLK_DECRYPTION              = 0x0a,
-	HIF_ERROR_SLK_WRONG_ENCRYPTION_STATE  = 0x0b,
-	HIF_ERROR_HIF_BUS_FREQUENCY_TOO_LOW   = 0x0c,
-	HIF_ERROR_HIF_RX_DATA_TOO_LARGE       = 0x0e,
-	HIF_ERROR_HIF_TX_QUEUE_FULL           = 0x0d,
-	HIF_ERROR_HIF_BUS                     = 0x0f,
-	HIF_ERROR_PDS_TESTFEATURE             = 0x10,
-	HIF_ERROR_SLK_UNCONFIGURED            = 0x11,
-};
-
-struct hif_ind_error {
-	__le32 type;
-	u8     data[];
-} __packed;
-
-struct hif_ind_exception {
-	__le32 type;
-	u8     data[];
-} __packed;
-
-enum hif_secure_link_state {
-	SEC_LINK_UNAVAILABLE = 0x0,
-	SEC_LINK_RESERVED    = 0x1,
-	SEC_LINK_EVAL        = 0x2,
-	SEC_LINK_ENFORCED    = 0x3
-};
-
-#endif
diff --git a/drivers/staging/wfx/hif_api_mib.h b/drivers/staging/wfx/hif_api_mib.h
deleted file mode 100644
index ace924720ce6..000000000000
--- a/drivers/staging/wfx/hif_api_mib.h
+++ /dev/null
@@ -1,343 +0,0 @@
-/* SPDX-License-Identifier: Apache-2.0 */
-/*
- * WFx hardware interface definitions
- *
- * Copyright (c) 2018-2020, Silicon Laboratories Inc.
- */
-
-#ifndef WFX_HIF_API_MIB_H
-#define WFX_HIF_API_MIB_H
-
-#include "hif_api_general.h"
-
-#define HIF_API_IPV4_ADDRESS_SIZE 4
-#define HIF_API_IPV6_ADDRESS_SIZE 16
-
-enum hif_mib_ids {
-	HIF_MIB_ID_GL_OPERATIONAL_POWER_MODE        = 0x2000,
-	HIF_MIB_ID_GL_BLOCK_ACK_INFO                = 0x2001,
-	HIF_MIB_ID_GL_SET_MULTI_MSG                 = 0x2002,
-	HIF_MIB_ID_CCA_CONFIG                       = 0x2003,
-	HIF_MIB_ID_ETHERTYPE_DATAFRAME_CONDITION    = 0x2010,
-	HIF_MIB_ID_PORT_DATAFRAME_CONDITION         = 0x2011,
-	HIF_MIB_ID_MAGIC_DATAFRAME_CONDITION        = 0x2012,
-	HIF_MIB_ID_MAC_ADDR_DATAFRAME_CONDITION     = 0x2013,
-	HIF_MIB_ID_IPV4_ADDR_DATAFRAME_CONDITION    = 0x2014,
-	HIF_MIB_ID_IPV6_ADDR_DATAFRAME_CONDITION    = 0x2015,
-	HIF_MIB_ID_UC_MC_BC_DATAFRAME_CONDITION     = 0x2016,
-	HIF_MIB_ID_CONFIG_DATA_FILTER               = 0x2017,
-	HIF_MIB_ID_SET_DATA_FILTERING               = 0x2018,
-	HIF_MIB_ID_ARP_IP_ADDRESSES_TABLE           = 0x2019,
-	HIF_MIB_ID_NS_IP_ADDRESSES_TABLE            = 0x201A,
-	HIF_MIB_ID_RX_FILTER                        = 0x201B,
-	HIF_MIB_ID_BEACON_FILTER_TABLE              = 0x201C,
-	HIF_MIB_ID_BEACON_FILTER_ENABLE             = 0x201D,
-	HIF_MIB_ID_GRP_SEQ_COUNTER                  = 0x2030,
-	HIF_MIB_ID_TSF_COUNTER                      = 0x2031,
-	HIF_MIB_ID_STATISTICS_TABLE                 = 0x2032,
-	HIF_MIB_ID_COUNTERS_TABLE                   = 0x2033,
-	HIF_MIB_ID_MAX_TX_POWER_LEVEL               = 0x2034,
-	HIF_MIB_ID_EXTENDED_COUNTERS_TABLE          = 0x2035,
-	HIF_MIB_ID_DOT11_MAC_ADDRESS                = 0x2040,
-	HIF_MIB_ID_DOT11_MAX_TRANSMIT_MSDU_LIFETIME = 0x2041,
-	HIF_MIB_ID_DOT11_MAX_RECEIVE_LIFETIME       = 0x2042,
-	HIF_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID         = 0x2043,
-	HIF_MIB_ID_DOT11_RTS_THRESHOLD              = 0x2044,
-	HIF_MIB_ID_SLOT_TIME                        = 0x2045,
-	HIF_MIB_ID_CURRENT_TX_POWER_LEVEL           = 0x2046,
-	HIF_MIB_ID_NON_ERP_PROTECTION               = 0x2047,
-	HIF_MIB_ID_TEMPLATE_FRAME                   = 0x2048,
-	HIF_MIB_ID_BEACON_WAKEUP_PERIOD             = 0x2049,
-	HIF_MIB_ID_RCPI_RSSI_THRESHOLD              = 0x204A,
-	HIF_MIB_ID_BLOCK_ACK_POLICY                 = 0x204B,
-	HIF_MIB_ID_OVERRIDE_INTERNAL_TX_RATE        = 0x204C,
-	HIF_MIB_ID_SET_ASSOCIATION_MODE             = 0x204D,
-	HIF_MIB_ID_SET_UAPSD_INFORMATION            = 0x204E,
-	HIF_MIB_ID_SET_TX_RATE_RETRY_POLICY         = 0x204F,
-	HIF_MIB_ID_PROTECTED_MGMT_POLICY            = 0x2050,
-	HIF_MIB_ID_SET_HT_PROTECTION                = 0x2051,
-	HIF_MIB_ID_KEEP_ALIVE_PERIOD                = 0x2052,
-	HIF_MIB_ID_ARP_KEEP_ALIVE_PERIOD            = 0x2053,
-	HIF_MIB_ID_INACTIVITY_TIMER                 = 0x2054,
-	HIF_MIB_ID_INTERFACE_PROTECTION             = 0x2055,
-	HIF_MIB_ID_BEACON_STATS                     = 0x2056,
-};
-
-enum hif_op_power_mode {
-	HIF_OP_POWER_MODE_ACTIVE    = 0x0,
-	HIF_OP_POWER_MODE_DOZE      = 0x1,
-	HIF_OP_POWER_MODE_QUIESCENT = 0x2
-};
-
-struct hif_mib_gl_operational_power_mode {
-	u8     power_mode:4;
-	u8     reserved1:3;
-	u8     wup_ind_activation:1;
-	u8     reserved2[3];
-} __packed;
-
-struct hif_mib_gl_set_multi_msg {
-	u8     enable_multi_tx_conf:1;
-	u8     reserved1:7;
-	u8     reserved2[3];
-} __packed;
-
-enum hif_arp_ns_frame_treatment {
-	HIF_ARP_NS_FILTERING_DISABLE = 0x0,
-	HIF_ARP_NS_FILTERING_ENABLE  = 0x1,
-	HIF_ARP_NS_REPLY_ENABLE      = 0x2
-};
-
-struct hif_mib_arp_ip_addr_table {
-	u8     condition_idx;
-	u8     arp_enable;
-	u8     reserved[2];
-	u8     ipv4_address[HIF_API_IPV4_ADDRESS_SIZE];
-} __packed;
-
-struct hif_mib_rx_filter {
-	u8     reserved1:1;
-	u8     bssid_filter:1;
-	u8     reserved2:1;
-	u8     fwd_probe_req:1;
-	u8     keep_alive_filter:1;
-	u8     reserved3:3;
-	u8     reserved4[3];
-} __packed;
-
-struct hif_ie_table_entry {
-	u8     ie_id;
-	u8     has_changed:1;
-	u8     no_longer:1;
-	u8     has_appeared:1;
-	u8     reserved:1;
-	u8     num_match_data:4;
-	u8     oui[3];
-	u8     match_data[3];
-} __packed;
-
-struct hif_mib_bcn_filter_table {
-	__le32 num_of_info_elmts;
-	struct hif_ie_table_entry ie_table[];
-} __packed;
-
-enum hif_beacon_filter {
-	HIF_BEACON_FILTER_DISABLE  = 0x0,
-	HIF_BEACON_FILTER_ENABLE   = 0x1,
-	HIF_BEACON_FILTER_AUTO_ERP = 0x2
-};
-
-struct hif_mib_bcn_filter_enable {
-	__le32 enable;
-	__le32 bcn_count;
-} __packed;
-
-struct hif_mib_extended_count_table {
-	__le32 count_plcp_errors;
-	__le32 count_fcs_errors;
-	__le32 count_tx_packets;
-	__le32 count_rx_packets;
-	__le32 count_rx_packet_errors;
-	__le32 count_rx_decryption_failures;
-	__le32 count_rx_mic_failures;
-	__le32 count_rx_no_key_failures;
-	__le32 count_tx_multicast_frames;
-	__le32 count_tx_frames_success;
-	__le32 count_tx_frame_failures;
-	__le32 count_tx_frames_retried;
-	__le32 count_tx_frames_multi_retried;
-	__le32 count_rx_frame_duplicates;
-	__le32 count_rts_success;
-	__le32 count_rts_failures;
-	__le32 count_ack_failures;
-	__le32 count_rx_multicast_frames;
-	__le32 count_rx_frames_success;
-	__le32 count_rx_cmacicv_errors;
-	__le32 count_rx_cmac_replays;
-	__le32 count_rx_mgmt_ccmp_replays;
-	__le32 count_rx_bipmic_errors;
-	__le32 count_rx_beacon;
-	__le32 count_miss_beacon;
-	__le32 reserved[15];
-} __packed;
-
-struct hif_mib_count_table {
-	__le32 count_plcp_errors;
-	__le32 count_fcs_errors;
-	__le32 count_tx_packets;
-	__le32 count_rx_packets;
-	__le32 count_rx_packet_errors;
-	__le32 count_rx_decryption_failures;
-	__le32 count_rx_mic_failures;
-	__le32 count_rx_no_key_failures;
-	__le32 count_tx_multicast_frames;
-	__le32 count_tx_frames_success;
-	__le32 count_tx_frame_failures;
-	__le32 count_tx_frames_retried;
-	__le32 count_tx_frames_multi_retried;
-	__le32 count_rx_frame_duplicates;
-	__le32 count_rts_success;
-	__le32 count_rts_failures;
-	__le32 count_ack_failures;
-	__le32 count_rx_multicast_frames;
-	__le32 count_rx_frames_success;
-	__le32 count_rx_cmacicv_errors;
-	__le32 count_rx_cmac_replays;
-	__le32 count_rx_mgmt_ccmp_replays;
-	__le32 count_rx_bipmic_errors;
-} __packed;
-
-struct hif_mib_mac_address {
-	u8     mac_addr[ETH_ALEN];
-	__le16 reserved;
-} __packed;
-
-struct hif_mib_wep_default_key_id {
-	u8     wep_default_key_id;
-	u8     reserved[3];
-} __packed;
-
-struct hif_mib_dot11_rts_threshold {
-	__le32 threshold;
-} __packed;
-
-struct hif_mib_slot_time {
-	__le32 slot_time;
-} __packed;
-
-struct hif_mib_current_tx_power_level {
-	__le32 power_level; // signed value
-} __packed;
-
-struct hif_mib_non_erp_protection {
-	u8     use_cts_to_self:1;
-	u8     reserved1:7;
-	u8     reserved2[3];
-} __packed;
-
-enum hif_tmplt {
-	HIF_TMPLT_PRBREQ = 0x0,
-	HIF_TMPLT_BCN    = 0x1,
-	HIF_TMPLT_NULL   = 0x2,
-	HIF_TMPLT_QOSNUL = 0x3,
-	HIF_TMPLT_PSPOLL = 0x4,
-	HIF_TMPLT_PRBRES = 0x5,
-	HIF_TMPLT_ARP    = 0x6,
-	HIF_TMPLT_NA     = 0x7
-};
-
-#define HIF_API_MAX_TEMPLATE_FRAME_SIZE 700
-
-struct hif_mib_template_frame {
-	u8     frame_type;
-	u8     init_rate:7;
-	u8     mode:1;
-	__le16 frame_length;
-	u8     frame[];
-} __packed;
-
-struct hif_mib_beacon_wake_up_period {
-	u8     wakeup_period_min;
-	u8     receive_dtim:1;
-	u8     reserved1:7;
-	u8     wakeup_period_max;
-	u8     reserved2;
-} __packed;
-
-struct hif_mib_rcpi_rssi_threshold {
-	u8     detection:1;
-	u8     rcpi_rssi:1;
-	u8     upperthresh:1;
-	u8     lowerthresh:1;
-	u8     reserved:4;
-	u8     lower_threshold;
-	u8     upper_threshold;
-	u8     rolling_average_count;
-} __packed;
-
-#define DEFAULT_BA_MAX_RX_BUFFER_SIZE 16
-
-struct hif_mib_block_ack_policy {
-	u8     block_ack_tx_tid_policy;
-	u8     reserved1;
-	u8     block_ack_rx_tid_policy;
-	u8     block_ack_rx_max_buffer_size;
-} __packed;
-
-enum hif_mpdu_start_spacing {
-	HIF_MPDU_START_SPACING_NO_RESTRIC = 0x0,
-	HIF_MPDU_START_SPACING_QUARTER    = 0x1,
-	HIF_MPDU_START_SPACING_HALF       = 0x2,
-	HIF_MPDU_START_SPACING_ONE        = 0x3,
-	HIF_MPDU_START_SPACING_TWO        = 0x4,
-	HIF_MPDU_START_SPACING_FOUR       = 0x5,
-	HIF_MPDU_START_SPACING_EIGHT      = 0x6,
-	HIF_MPDU_START_SPACING_SIXTEEN    = 0x7
-};
-
-struct hif_mib_set_association_mode {
-	u8     preambtype_use:1;
-	u8     mode:1;
-	u8     rateset:1;
-	u8     spacing:1;
-	u8     reserved1:4;
-	u8     short_preamble:1;
-	u8     reserved2:7;
-	u8     greenfield:1;
-	u8     reserved3:7;
-	u8     mpdu_start_spacing;
-	__le32 basic_rate_set;
-} __packed;
-
-struct hif_mib_set_uapsd_information {
-	u8     trig_bckgrnd:1;
-	u8     trig_be:1;
-	u8     trig_video:1;
-	u8     trig_voice:1;
-	u8     reserved1:4;
-	u8     deliv_bckgrnd:1;
-	u8     deliv_be:1;
-	u8     deliv_video:1;
-	u8     deliv_voice:1;
-	u8     reserved2:4;
-	__le16 min_auto_trigger_interval;
-	__le16 max_auto_trigger_interval;
-	__le16 auto_trigger_step;
-} __packed;
-
-struct hif_tx_rate_retry_policy {
-	u8     policy_index;
-	u8     short_retry_count;
-	u8     long_retry_count;
-	u8     first_rate_sel:2;
-	u8     terminate:1;
-	u8     count_init:1;
-	u8     reserved1:4;
-	u8     rate_recovery_count;
-	u8     reserved2[3];
-	u8     rates[12];
-} __packed;
-
-#define HIF_TX_RETRY_POLICY_MAX     15
-#define HIF_TX_RETRY_POLICY_INVALID HIF_TX_RETRY_POLICY_MAX
-
-struct hif_mib_set_tx_rate_retry_policy {
-	u8     num_tx_rate_policies;
-	u8     reserved[3];
-	struct hif_tx_rate_retry_policy tx_rate_retry_policy[];
-} __packed;
-
-struct hif_mib_protected_mgmt_policy {
-	u8     pmf_enable:1;
-	u8     unpmf_allowed:1;
-	u8     host_enc_auth_frames:1;
-	u8     reserved1:5;
-	u8     reserved2[3];
-} __packed;
-
-struct hif_mib_keep_alive_period {
-	__le16 keep_alive_period;
-	u8     reserved[2];
-} __packed;
-
-#endif
diff --git a/drivers/staging/wfx/hif_rx.c b/drivers/staging/wfx/hif_rx.c
deleted file mode 100644
index 56a5f891447b..000000000000
--- a/drivers/staging/wfx/hif_rx.c
+++ /dev/null
@@ -1,415 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Implementation of chip-to-host event (aka indications) of WFxxx Split Mac
- * (WSM) API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-
-#include "hif_rx.h"
-#include "wfx.h"
-#include "scan.h"
-#include "bh.h"
-#include "sta.h"
-#include "data_rx.h"
-#include "hif_api_cmd.h"
-
-static int hif_generic_confirm(struct wfx_dev *wdev,
-			       const struct hif_msg *hif, const void *buf)
-{
-	// All confirm messages start with status
-	int status = le32_to_cpup((__le32 *)buf);
-	int cmd = hif->id;
-	int len = le16_to_cpu(hif->len) - 4; // drop header
-
-	WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error");
-
-	if (!wdev->hif_cmd.buf_send) {
-		dev_warn(wdev->dev, "unexpected confirmation: 0x%.2x\n", cmd);
-		return -EINVAL;
-	}
-
-	if (cmd != wdev->hif_cmd.buf_send->id) {
-		dev_warn(wdev->dev,
-			 "chip response mismatch request: 0x%.2x vs 0x%.2x\n",
-			 cmd, wdev->hif_cmd.buf_send->id);
-		return -EINVAL;
-	}
-
-	if (wdev->hif_cmd.buf_recv) {
-		if (wdev->hif_cmd.len_recv >= len && len > 0)
-			memcpy(wdev->hif_cmd.buf_recv, buf, len);
-		else
-			status = -EIO;
-	}
-	wdev->hif_cmd.ret = status;
-
-	complete(&wdev->hif_cmd.done);
-	return status;
-}
-
-static int hif_tx_confirm(struct wfx_dev *wdev,
-			  const struct hif_msg *hif, const void *buf)
-{
-	const struct hif_cnf_tx *body = buf;
-
-	wfx_tx_confirm_cb(wdev, body);
-	return 0;
-}
-
-static int hif_multi_tx_confirm(struct wfx_dev *wdev,
-				const struct hif_msg *hif, const void *buf)
-{
-	const struct hif_cnf_multi_transmit *body = buf;
-	int i;
-
-	WARN(body->num_tx_confs <= 0, "corrupted message");
-	for (i = 0; i < body->num_tx_confs; i++)
-		wfx_tx_confirm_cb(wdev, &body->tx_conf_payload[i]);
-	return 0;
-}
-
-static int hif_startup_indication(struct wfx_dev *wdev,
-				  const struct hif_msg *hif, const void *buf)
-{
-	const struct hif_ind_startup *body = buf;
-
-	if (body->status || body->firmware_type > 4) {
-		dev_err(wdev->dev, "received invalid startup indication");
-		return -EINVAL;
-	}
-	memcpy(&wdev->hw_caps, body, sizeof(struct hif_ind_startup));
-	le16_to_cpus((__le16 *)&wdev->hw_caps.hardware_id);
-	le16_to_cpus((__le16 *)&wdev->hw_caps.num_inp_ch_bufs);
-	le16_to_cpus((__le16 *)&wdev->hw_caps.size_inp_ch_buf);
-	le32_to_cpus((__le32 *)&wdev->hw_caps.supported_rate_mask);
-
-	complete(&wdev->firmware_ready);
-	return 0;
-}
-
-static int hif_wakeup_indication(struct wfx_dev *wdev,
-				 const struct hif_msg *hif, const void *buf)
-{
-	if (!wdev->pdata.gpio_wakeup ||
-	    gpiod_get_value(wdev->pdata.gpio_wakeup) == 0) {
-		dev_warn(wdev->dev, "unexpected wake-up indication\n");
-		return -EIO;
-	}
-	return 0;
-}
-
-static int hif_receive_indication(struct wfx_dev *wdev,
-				  const struct hif_msg *hif,
-				  const void *buf, struct sk_buff *skb)
-{
-	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
-	const struct hif_ind_rx *body = buf;
-
-	if (!wvif) {
-		dev_warn(wdev->dev, "%s: ignore rx data for non-existent vif %d\n",
-			 __func__, hif->interface);
-		return -EIO;
-	}
-	skb_pull(skb, sizeof(struct hif_msg) + sizeof(struct hif_ind_rx));
-	wfx_rx_cb(wvif, body, skb);
-
-	return 0;
-}
-
-static int hif_event_indication(struct wfx_dev *wdev,
-				const struct hif_msg *hif, const void *buf)
-{
-	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
-	const struct hif_ind_event *body = buf;
-	int type = le32_to_cpu(body->event_id);
-
-	if (!wvif) {
-		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
-		return -EIO;
-	}
-
-	switch (type) {
-	case HIF_EVENT_IND_RCPI_RSSI:
-		wfx_event_report_rssi(wvif, body->event_data.rcpi_rssi);
-		break;
-	case HIF_EVENT_IND_BSSLOST:
-		schedule_delayed_work(&wvif->beacon_loss_work, 0);
-		break;
-	case HIF_EVENT_IND_BSSREGAINED:
-		cancel_delayed_work(&wvif->beacon_loss_work);
-		dev_dbg(wdev->dev, "ignore BSSREGAINED indication\n");
-		break;
-	case HIF_EVENT_IND_PS_MODE_ERROR:
-		dev_warn(wdev->dev, "error while processing power save request: %d\n",
-			 le32_to_cpu(body->event_data.ps_mode_error));
-		break;
-	default:
-		dev_warn(wdev->dev, "unhandled event indication: %.2x\n",
-			 type);
-		break;
-	}
-	return 0;
-}
-
-static int hif_pm_mode_complete_indication(struct wfx_dev *wdev,
-					   const struct hif_msg *hif,
-					   const void *buf)
-{
-	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
-
-	if (!wvif) {
-		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
-		return -EIO;
-	}
-	complete(&wvif->set_pm_mode_complete);
-
-	return 0;
-}
-
-static int hif_scan_complete_indication(struct wfx_dev *wdev,
-					const struct hif_msg *hif,
-					const void *buf)
-{
-	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
-
-	if (!wvif) {
-		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
-		return -EIO;
-	}
-
-	wfx_scan_complete(wvif);
-
-	return 0;
-}
-
-static int hif_join_complete_indication(struct wfx_dev *wdev,
-					const struct hif_msg *hif,
-					const void *buf)
-{
-	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
-
-	if (!wvif) {
-		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
-		return -EIO;
-	}
-	dev_warn(wdev->dev, "unattended JoinCompleteInd\n");
-
-	return 0;
-}
-
-static int hif_suspend_resume_indication(struct wfx_dev *wdev,
-					 const struct hif_msg *hif,
-					 const void *buf)
-{
-	const struct hif_ind_suspend_resume_tx *body = buf;
-	struct wfx_vif *wvif;
-
-	if (body->bc_mc_only) {
-		wvif = wdev_to_wvif(wdev, hif->interface);
-		if (!wvif) {
-			dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
-			return -EIO;
-		}
-		if (body->resume)
-			wfx_suspend_resume_mc(wvif, STA_NOTIFY_AWAKE);
-		else
-			wfx_suspend_resume_mc(wvif, STA_NOTIFY_SLEEP);
-	} else {
-		WARN(body->peer_sta_set, "misunderstood indication");
-		WARN(hif->interface != 2, "misunderstood indication");
-		if (body->resume)
-			wfx_suspend_hot_dev(wdev, STA_NOTIFY_AWAKE);
-		else
-			wfx_suspend_hot_dev(wdev, STA_NOTIFY_SLEEP);
-	}
-
-	return 0;
-}
-
-static int hif_generic_indication(struct wfx_dev *wdev,
-				  const struct hif_msg *hif, const void *buf)
-{
-	const struct hif_ind_generic *body = buf;
-	int type = le32_to_cpu(body->type);
-
-	switch (type) {
-	case HIF_GENERIC_INDICATION_TYPE_RAW:
-		return 0;
-	case HIF_GENERIC_INDICATION_TYPE_STRING:
-		dev_info(wdev->dev, "firmware says: %s\n", (char *)&body->data);
-		return 0;
-	case HIF_GENERIC_INDICATION_TYPE_RX_STATS:
-		mutex_lock(&wdev->rx_stats_lock);
-		// Older firmware send a generic indication beside RxStats
-		if (!wfx_api_older_than(wdev, 1, 4))
-			dev_info(wdev->dev, "Rx test ongoing. Temperature: %d degrees C\n",
-				 body->data.rx_stats.current_temp);
-		memcpy(&wdev->rx_stats, &body->data.rx_stats,
-		       sizeof(wdev->rx_stats));
-		mutex_unlock(&wdev->rx_stats_lock);
-		return 0;
-	case HIF_GENERIC_INDICATION_TYPE_TX_POWER_LOOP_INFO:
-		mutex_lock(&wdev->tx_power_loop_info_lock);
-		memcpy(&wdev->tx_power_loop_info,
-		       &body->data.tx_power_loop_info,
-		       sizeof(wdev->tx_power_loop_info));
-		mutex_unlock(&wdev->tx_power_loop_info_lock);
-		return 0;
-	default:
-		dev_err(wdev->dev, "generic_indication: unknown indication type: %#.8x\n",
-			type);
-		return -EIO;
-	}
-}
-
-static const struct {
-	int val;
-	const char *str;
-	bool has_param;
-} hif_errors[] = {
-	{ HIF_ERROR_FIRMWARE_ROLLBACK,
-		"rollback status" },
-	{ HIF_ERROR_FIRMWARE_DEBUG_ENABLED,
-		"debug feature enabled" },
-	{ HIF_ERROR_PDS_PAYLOAD,
-		"PDS version is not supported" },
-	{ HIF_ERROR_PDS_TESTFEATURE,
-		"PDS ask for an unknown test mode" },
-	{ HIF_ERROR_OOR_VOLTAGE,
-		"out-of-range power supply voltage", true },
-	{ HIF_ERROR_OOR_TEMPERATURE,
-		"out-of-range temperature", true },
-	{ HIF_ERROR_SLK_REQ_DURING_KEY_EXCHANGE,
-		"secure link does not expect request during key exchange" },
-	{ HIF_ERROR_SLK_SESSION_KEY,
-		"secure link session key is invalid" },
-	{ HIF_ERROR_SLK_OVERFLOW,
-		"secure link overflow" },
-	{ HIF_ERROR_SLK_WRONG_ENCRYPTION_STATE,
-		"secure link messages list does not match message encryption" },
-	{ HIF_ERROR_SLK_UNCONFIGURED,
-		"secure link not yet configured" },
-	{ HIF_ERROR_HIF_BUS_FREQUENCY_TOO_LOW,
-		"bus clock is too slow (<1kHz)" },
-	{ HIF_ERROR_HIF_RX_DATA_TOO_LARGE,
-		"HIF message too large" },
-	// Following errors only exists in old firmware versions:
-	{ HIF_ERROR_HIF_TX_QUEUE_FULL,
-		"HIF messages queue is full" },
-	{ HIF_ERROR_HIF_BUS,
-		"HIF bus" },
-	{ HIF_ERROR_SLK_MULTI_TX_UNSUPPORTED,
-		"secure link does not support multi-tx confirmations" },
-	{ HIF_ERROR_SLK_OUTDATED_SESSION_KEY,
-		"secure link session key is outdated" },
-	{ HIF_ERROR_SLK_DECRYPTION,
-		"secure link params (nonce or tag) mismatch" },
-};
-
-static int hif_error_indication(struct wfx_dev *wdev,
-				const struct hif_msg *hif, const void *buf)
-{
-	const struct hif_ind_error *body = buf;
-	int type = le32_to_cpu(body->type);
-	int param = (s8)body->data[0];
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(hif_errors); i++)
-		if (type == hif_errors[i].val)
-			break;
-	if (i < ARRAY_SIZE(hif_errors))
-		if (hif_errors[i].has_param)
-			dev_err(wdev->dev, "asynchronous error: %s: %d\n",
-				hif_errors[i].str, param);
-		else
-			dev_err(wdev->dev, "asynchronous error: %s\n",
-				hif_errors[i].str);
-	else
-		dev_err(wdev->dev, "asynchronous error: unknown: %08x\n", type);
-	print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET,
-		       16, 1, hif, le16_to_cpu(hif->len), false);
-	wdev->chip_frozen = true;
-
-	return 0;
-};
-
-static int hif_exception_indication(struct wfx_dev *wdev,
-				    const struct hif_msg *hif, const void *buf)
-{
-	const struct hif_ind_exception *body = buf;
-	int type = le32_to_cpu(body->type);
-
-	if (type == 4)
-		dev_err(wdev->dev, "firmware assert %d\n",
-			le32_to_cpup((__le32 *)body->data));
-	else
-		dev_err(wdev->dev, "firmware exception\n");
-	print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET,
-		       16, 1, hif, le16_to_cpu(hif->len), false);
-	wdev->chip_frozen = true;
-
-	return -1;
-}
-
-static const struct {
-	int msg_id;
-	int (*handler)(struct wfx_dev *wdev,
-		       const struct hif_msg *hif, const void *buf);
-} hif_handlers[] = {
-	/* Confirmations */
-	{ HIF_CNF_ID_TX,                   hif_tx_confirm },
-	{ HIF_CNF_ID_MULTI_TRANSMIT,       hif_multi_tx_confirm },
-	/* Indications */
-	{ HIF_IND_ID_STARTUP,              hif_startup_indication },
-	{ HIF_IND_ID_WAKEUP,               hif_wakeup_indication },
-	{ HIF_IND_ID_JOIN_COMPLETE,        hif_join_complete_indication },
-	{ HIF_IND_ID_SET_PM_MODE_CMPL,     hif_pm_mode_complete_indication },
-	{ HIF_IND_ID_SCAN_CMPL,            hif_scan_complete_indication },
-	{ HIF_IND_ID_SUSPEND_RESUME_TX,    hif_suspend_resume_indication },
-	{ HIF_IND_ID_EVENT,                hif_event_indication },
-	{ HIF_IND_ID_GENERIC,              hif_generic_indication },
-	{ HIF_IND_ID_ERROR,                hif_error_indication },
-	{ HIF_IND_ID_EXCEPTION,            hif_exception_indication },
-	// FIXME: allocate skb_p from hif_receive_indication and make it generic
-	//{ HIF_IND_ID_RX,                 hif_receive_indication },
-};
-
-void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb)
-{
-	int i;
-	const struct hif_msg *hif = (const struct hif_msg *)skb->data;
-	int hif_id = hif->id;
-
-	if (hif_id == HIF_IND_ID_RX) {
-		// hif_receive_indication take care of skb lifetime
-		hif_receive_indication(wdev, hif, hif->body, skb);
-		return;
-	}
-	// Note: mutex_is_lock cause an implicit memory barrier that protect
-	// buf_send
-	if (mutex_is_locked(&wdev->hif_cmd.lock)
-	    && wdev->hif_cmd.buf_send
-	    && wdev->hif_cmd.buf_send->id == hif_id) {
-		hif_generic_confirm(wdev, hif, hif->body);
-		goto free;
-	}
-	for (i = 0; i < ARRAY_SIZE(hif_handlers); i++) {
-		if (hif_handlers[i].msg_id == hif_id) {
-			if (hif_handlers[i].handler)
-				hif_handlers[i].handler(wdev, hif, hif->body);
-			goto free;
-		}
-	}
-	if (hif_id & 0x80)
-		dev_err(wdev->dev, "unsupported HIF indication: ID %02x\n",
-			hif_id);
-	else
-		dev_err(wdev->dev, "unexpected HIF confirmation: ID %02x\n",
-			hif_id);
-free:
-	dev_kfree_skb(skb);
-}
diff --git a/drivers/staging/wfx/hif_rx.h b/drivers/staging/wfx/hif_rx.h
deleted file mode 100644
index f07c10c8c6bd..000000000000
--- a/drivers/staging/wfx/hif_rx.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Implementation of chip-to-host event (aka indications) of WFxxx Split Mac
- * (WSM) API.
- *
- * Copyright (c) 2017-2019, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (C) 2010, ST-Ericsson SA
- */
-#ifndef WFX_HIF_RX_H
-#define WFX_HIF_RX_H
-
-struct wfx_dev;
-struct sk_buff;
-
-void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb);
-
-#endif
diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c
deleted file mode 100644
index 63b437261eb7..000000000000
--- a/drivers/staging/wfx/hif_tx.c
+++ /dev/null
@@ -1,523 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Implementation of host-to-chip commands (aka request/confirmation) of WFxxx
- * Split Mac (WSM) API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/etherdevice.h>
-
-#include "hif_tx.h"
-#include "wfx.h"
-#include "bh.h"
-#include "hwio.h"
-#include "debug.h"
-#include "sta.h"
-
-void wfx_init_hif_cmd(struct wfx_hif_cmd *hif_cmd)
-{
-	init_completion(&hif_cmd->ready);
-	init_completion(&hif_cmd->done);
-	mutex_init(&hif_cmd->lock);
-}
-
-static void wfx_fill_header(struct hif_msg *hif, int if_id,
-			    unsigned int cmd, size_t size)
-{
-	if (if_id == -1)
-		if_id = 2;
-
-	WARN(cmd > 0x3f, "invalid WSM command %#.2x", cmd);
-	WARN(size > 0xFFF, "requested buffer is too large: %zu bytes", size);
-	WARN(if_id > 0x3, "invalid interface ID %d", if_id);
-
-	hif->len = cpu_to_le16(size + 4);
-	hif->id = cmd;
-	hif->interface = if_id;
-}
-
-static void *wfx_alloc_hif(size_t body_len, struct hif_msg **hif)
-{
-	*hif = kzalloc(sizeof(struct hif_msg) + body_len, GFP_KERNEL);
-	if (*hif)
-		return (*hif)->body;
-	else
-		return NULL;
-}
-
-int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request,
-		 void *reply, size_t reply_len, bool no_reply)
-{
-	const char *mib_name = "";
-	const char *mib_sep = "";
-	int cmd = request->id;
-	int vif = request->interface;
-	int ret;
-
-	// Do not wait for any reply if chip is frozen
-	if (wdev->chip_frozen)
-		return -ETIMEDOUT;
-
-	mutex_lock(&wdev->hif_cmd.lock);
-	WARN(wdev->hif_cmd.buf_send, "data locking error");
-
-	// Note: call to complete() below has an implicit memory barrier that
-	// hopefully protect buf_send
-	wdev->hif_cmd.buf_send = request;
-	wdev->hif_cmd.buf_recv = reply;
-	wdev->hif_cmd.len_recv = reply_len;
-	complete(&wdev->hif_cmd.ready);
-
-	wfx_bh_request_tx(wdev);
-
-	if (no_reply) {
-		// Chip won't reply. Give enough time to the wq to send the
-		// buffer.
-		msleep(100);
-		wdev->hif_cmd.buf_send = NULL;
-		mutex_unlock(&wdev->hif_cmd.lock);
-		return 0;
-	}
-
-	if (wdev->poll_irq)
-		wfx_bh_poll_irq(wdev);
-
-	ret = wait_for_completion_timeout(&wdev->hif_cmd.done, 1 * HZ);
-	if (!ret) {
-		dev_err(wdev->dev, "chip is abnormally long to answer\n");
-		reinit_completion(&wdev->hif_cmd.ready);
-		ret = wait_for_completion_timeout(&wdev->hif_cmd.done, 3 * HZ);
-	}
-	if (!ret) {
-		dev_err(wdev->dev, "chip did not answer\n");
-		wfx_pending_dump_old_frames(wdev, 3000);
-		wdev->chip_frozen = true;
-		reinit_completion(&wdev->hif_cmd.done);
-		ret = -ETIMEDOUT;
-	} else {
-		ret = wdev->hif_cmd.ret;
-	}
-
-	wdev->hif_cmd.buf_send = NULL;
-	mutex_unlock(&wdev->hif_cmd.lock);
-
-	if (ret &&
-	    (cmd == HIF_REQ_ID_READ_MIB || cmd == HIF_REQ_ID_WRITE_MIB)) {
-		mib_name = get_mib_name(((u16 *)request)[2]);
-		mib_sep = "/";
-	}
-	if (ret < 0)
-		dev_err(wdev->dev,
-			"WSM request %s%s%s (%#.2x) on vif %d returned error %d\n",
-			get_hif_name(cmd), mib_sep, mib_name, cmd, vif, ret);
-	if (ret > 0)
-		dev_warn(wdev->dev,
-			 "WSM request %s%s%s (%#.2x) on vif %d returned status %d\n",
-			 get_hif_name(cmd), mib_sep, mib_name, cmd, vif, ret);
-
-	return ret;
-}
-
-// This function is special. After HIF_REQ_ID_SHUT_DOWN, chip won't reply to any
-// request anymore. Obviously, only call this function during device unregister.
-int hif_shutdown(struct wfx_dev *wdev)
-{
-	int ret;
-	struct hif_msg *hif;
-
-	wfx_alloc_hif(0, &hif);
-	if (!hif)
-		return -ENOMEM;
-	wfx_fill_header(hif, -1, HIF_REQ_ID_SHUT_DOWN, 0);
-	ret = wfx_cmd_send(wdev, hif, NULL, 0, true);
-	if (wdev->pdata.gpio_wakeup)
-		gpiod_set_value(wdev->pdata.gpio_wakeup, 0);
-	else
-		control_reg_write(wdev, 0);
-	kfree(hif);
-	return ret;
-}
-
-int hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len)
-{
-	int ret;
-	size_t buf_len = sizeof(struct hif_req_configuration) + len;
-	struct hif_msg *hif;
-	struct hif_req_configuration *body = wfx_alloc_hif(buf_len, &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	body->length = cpu_to_le16(len);
-	memcpy(body->pds_data, conf, len);
-	wfx_fill_header(hif, -1, HIF_REQ_ID_CONFIGURATION, buf_len);
-	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_reset(struct wfx_vif *wvif, bool reset_stat)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_reset *body = wfx_alloc_hif(sizeof(*body), &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	body->reset_stat = reset_stat;
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_RESET, sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id,
-		 void *val, size_t val_len)
-{
-	int ret;
-	struct hif_msg *hif;
-	int buf_len = sizeof(struct hif_cnf_read_mib) + val_len;
-	struct hif_req_read_mib *body = wfx_alloc_hif(sizeof(*body), &hif);
-	struct hif_cnf_read_mib *reply = kmalloc(buf_len, GFP_KERNEL);
-
-	if (!body || !reply) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	body->mib_id = cpu_to_le16(mib_id);
-	wfx_fill_header(hif, vif_id, HIF_REQ_ID_READ_MIB, sizeof(*body));
-	ret = wfx_cmd_send(wdev, hif, reply, buf_len, false);
-
-	if (!ret && mib_id != le16_to_cpu(reply->mib_id)) {
-		dev_warn(wdev->dev, "%s: confirmation mismatch request\n",
-			 __func__);
-		ret = -EIO;
-	}
-	if (ret == -ENOMEM)
-		dev_err(wdev->dev, "buffer is too small to receive %s (%zu < %d)\n",
-			get_mib_name(mib_id), val_len,
-			le16_to_cpu(reply->length));
-	if (!ret)
-		memcpy(val, &reply->mib_data, le16_to_cpu(reply->length));
-	else
-		memset(val, 0xFF, val_len);
-out:
-	kfree(hif);
-	kfree(reply);
-	return ret;
-}
-
-int hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id,
-		  void *val, size_t val_len)
-{
-	int ret;
-	struct hif_msg *hif;
-	int buf_len = sizeof(struct hif_req_write_mib) + val_len;
-	struct hif_req_write_mib *body = wfx_alloc_hif(buf_len, &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	body->mib_id = cpu_to_le16(mib_id);
-	body->length = cpu_to_le16(val_len);
-	memcpy(&body->mib_data, val, val_len);
-	wfx_fill_header(hif, vif_id, HIF_REQ_ID_WRITE_MIB, buf_len);
-	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req,
-	     int chan_start_idx, int chan_num, int *timeout)
-{
-	int ret, i;
-	struct hif_msg *hif;
-	size_t buf_len =
-		sizeof(struct hif_req_start_scan_alt) + chan_num * sizeof(u8);
-	struct hif_req_start_scan_alt *body = wfx_alloc_hif(buf_len, &hif);
-	int tmo_chan_fg, tmo_chan_bg, tmo;
-
-	WARN(chan_num > HIF_API_MAX_NB_CHANNELS, "invalid params");
-	WARN(req->n_ssids > HIF_API_MAX_NB_SSIDS, "invalid params");
-
-	if (!hif)
-		return -ENOMEM;
-	for (i = 0; i < req->n_ssids; i++) {
-		memcpy(body->ssid_def[i].ssid, req->ssids[i].ssid,
-		       IEEE80211_MAX_SSID_LEN);
-		body->ssid_def[i].ssid_length =
-			cpu_to_le32(req->ssids[i].ssid_len);
-	}
-	body->num_of_ssids = HIF_API_MAX_NB_SSIDS;
-	body->maintain_current_bss = 1;
-	body->disallow_ps = 1;
-	body->tx_power_level =
-		cpu_to_le32(req->channels[chan_start_idx]->max_power);
-	body->num_of_channels = chan_num;
-	for (i = 0; i < chan_num; i++)
-		body->channel_list[i] =
-			req->channels[i + chan_start_idx]->hw_value;
-	if (req->no_cck)
-		body->max_transmit_rate = API_RATE_INDEX_G_6MBPS;
-	else
-		body->max_transmit_rate = API_RATE_INDEX_B_1MBPS;
-	if (req->channels[chan_start_idx]->flags & IEEE80211_CHAN_NO_IR) {
-		body->min_channel_time = cpu_to_le32(50);
-		body->max_channel_time = cpu_to_le32(150);
-	} else {
-		body->min_channel_time = cpu_to_le32(10);
-		body->max_channel_time = cpu_to_le32(50);
-		body->num_of_probe_requests = 2;
-		body->probe_delay = 100;
-	}
-	tmo_chan_bg = le32_to_cpu(body->max_channel_time) * USEC_PER_TU;
-	tmo_chan_fg = 512 * USEC_PER_TU + body->probe_delay;
-	tmo_chan_fg *= body->num_of_probe_requests;
-	tmo = chan_num * max(tmo_chan_bg, tmo_chan_fg) + 512 * USEC_PER_TU;
-	if (timeout)
-		*timeout = usecs_to_jiffies(tmo);
-
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START_SCAN, buf_len);
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_stop_scan(struct wfx_vif *wvif)
-{
-	int ret;
-	struct hif_msg *hif;
-	// body associated to HIF_REQ_ID_STOP_SCAN is empty
-	wfx_alloc_hif(0, &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_STOP_SCAN, 0);
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,
-	     struct ieee80211_channel *channel, const u8 *ssid, int ssidlen)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_join *body = wfx_alloc_hif(sizeof(*body), &hif);
-
-	WARN_ON(!conf->beacon_int);
-	WARN_ON(!conf->basic_rates);
-	WARN_ON(sizeof(body->ssid) < ssidlen);
-	WARN(!conf->ibss_joined && !ssidlen, "joining an unknown BSS");
-	if (WARN_ON(!channel))
-		return -EINVAL;
-	if (!hif)
-		return -ENOMEM;
-	body->infrastructure_bss_mode = !conf->ibss_joined;
-	body->short_preamble = conf->use_short_preamble;
-	if (channel->flags & IEEE80211_CHAN_NO_IR)
-		body->probe_for_join = 0;
-	else
-		body->probe_for_join = 1;
-	body->channel_number = channel->hw_value;
-	body->beacon_interval = cpu_to_le32(conf->beacon_int);
-	body->basic_rate_set =
-		cpu_to_le32(wfx_rate_mask_to_hw(wvif->wdev, conf->basic_rates));
-	memcpy(body->bssid, conf->bssid, sizeof(body->bssid));
-	if (ssid) {
-		body->ssid_length = cpu_to_le32(ssidlen);
-		memcpy(body->ssid, ssid, ssidlen);
-	}
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_JOIN, sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_set_bss_params(struct wfx_vif *wvif, int aid, int beacon_lost_count)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_set_bss_params *body =
-		wfx_alloc_hif(sizeof(*body), &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	body->aid = cpu_to_le16(aid);
-	body->beacon_lost_count = beacon_lost_count;
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_BSS_PARAMS,
-			sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg)
-{
-	int ret;
-	struct hif_msg *hif;
-	// FIXME: only send necessary bits
-	struct hif_req_add_key *body = wfx_alloc_hif(sizeof(*body), &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	// FIXME: swap bytes as necessary in body
-	memcpy(body, arg, sizeof(*body));
-	if (wfx_api_older_than(wdev, 1, 5))
-		// Legacy firmwares expect that add_key to be sent on right
-		// interface.
-		wfx_fill_header(hif, arg->int_id, HIF_REQ_ID_ADD_KEY,
-				sizeof(*body));
-	else
-		wfx_fill_header(hif, -1, HIF_REQ_ID_ADD_KEY, sizeof(*body));
-	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_remove_key(struct wfx_dev *wdev, int idx)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_remove_key *body = wfx_alloc_hif(sizeof(*body), &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	body->entry_index = idx;
-	wfx_fill_header(hif, -1, HIF_REQ_ID_REMOVE_KEY, sizeof(*body));
-	ret = wfx_cmd_send(wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue,
-			      const struct ieee80211_tx_queue_params *arg)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_edca_queue_params *body = wfx_alloc_hif(sizeof(*body),
-							       &hif);
-
-	if (!body)
-		return -ENOMEM;
-
-	WARN_ON(arg->aifs > 255);
-	if (!hif)
-		return -ENOMEM;
-	body->aifsn = arg->aifs;
-	body->cw_min = cpu_to_le16(arg->cw_min);
-	body->cw_max = cpu_to_le16(arg->cw_max);
-	body->tx_op_limit = cpu_to_le16(arg->txop * USEC_PER_TXOP);
-	body->queue_id = 3 - queue;
-	// API 2.0 has changed queue IDs values
-	if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BE)
-		body->queue_id = HIF_QUEUE_ID_BACKGROUND;
-	if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BK)
-		body->queue_id = HIF_QUEUE_ID_BESTEFFORT;
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_EDCA_QUEUE_PARAMS,
-			sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_set_pm_mode *body = wfx_alloc_hif(sizeof(*body), &hif);
-
-	if (!body)
-		return -ENOMEM;
-
-	if (!hif)
-		return -ENOMEM;
-	if (ps) {
-		body->enter_psm = 1;
-		// Firmware does not support more than 128ms
-		body->fast_psm_idle_period = min(dynamic_ps_timeout * 2, 255);
-		if (body->fast_psm_idle_period)
-			body->fast_psm = 1;
-	}
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_PM_MODE, sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,
-	      const struct ieee80211_channel *channel)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_start *body = wfx_alloc_hif(sizeof(*body), &hif);
-
-	WARN_ON(!conf->beacon_int);
-	if (!hif)
-		return -ENOMEM;
-	body->dtim_period = conf->dtim_period;
-	body->short_preamble = conf->use_short_preamble;
-	body->channel_number = channel->hw_value;
-	body->beacon_interval = cpu_to_le32(conf->beacon_int);
-	body->basic_rate_set =
-		cpu_to_le32(wfx_rate_mask_to_hw(wvif->wdev, conf->basic_rates));
-	body->ssid_length = conf->ssid_len;
-	memcpy(body->ssid, conf->ssid, conf->ssid_len);
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START, sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_beacon_transmit(struct wfx_vif *wvif, bool enable)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_beacon_transmit *body = wfx_alloc_hif(sizeof(*body),
-							     &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	body->enable_beaconing = enable ? 1 : 0;
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_BEACON_TRANSMIT,
-			sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_map_link(struct wfx_vif *wvif, bool unmap, u8 *mac_addr, int sta_id, bool mfp)
-{
-	int ret;
-	struct hif_msg *hif;
-	struct hif_req_map_link *body = wfx_alloc_hif(sizeof(*body), &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	if (mac_addr)
-		ether_addr_copy(body->mac_addr, mac_addr);
-	body->mfpc = mfp ? 1 : 0;
-	body->unmap = unmap ? 1 : 0;
-	body->peer_sta_id = sta_id;
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_MAP_LINK, sizeof(*body));
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
-
-int hif_update_ie_beacon(struct wfx_vif *wvif, const u8 *ies, size_t ies_len)
-{
-	int ret;
-	struct hif_msg *hif;
-	int buf_len = sizeof(struct hif_req_update_ie) + ies_len;
-	struct hif_req_update_ie *body = wfx_alloc_hif(buf_len, &hif);
-
-	if (!hif)
-		return -ENOMEM;
-	body->beacon = 1;
-	body->num_ies = cpu_to_le16(1);
-	memcpy(body->ie, ies, ies_len);
-	wfx_fill_header(hif, wvif->id, HIF_REQ_ID_UPDATE_IE, buf_len);
-	ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false);
-	kfree(hif);
-	return ret;
-}
diff --git a/drivers/staging/wfx/hif_tx.h b/drivers/staging/wfx/hif_tx.h
deleted file mode 100644
index 3521c545ae6b..000000000000
--- a/drivers/staging/wfx/hif_tx.h
+++ /dev/null
@@ -1,60 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Implementation of host-to-chip commands (aka request/confirmation) of WFxxx
- * Split Mac (WSM) API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (C) 2010, ST-Ericsson SA
- */
-#ifndef WFX_HIF_TX_H
-#define WFX_HIF_TX_H
-
-struct ieee80211_channel;
-struct ieee80211_bss_conf;
-struct ieee80211_tx_queue_params;
-struct cfg80211_scan_request;
-struct hif_req_add_key;
-struct wfx_dev;
-struct wfx_vif;
-
-struct wfx_hif_cmd {
-	struct mutex      lock;
-	struct completion ready;
-	struct completion done;
-	struct hif_msg    *buf_send;
-	void              *buf_recv;
-	size_t            len_recv;
-	int               ret;
-};
-
-void wfx_init_hif_cmd(struct wfx_hif_cmd *wfx_hif_cmd);
-int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request,
-		 void *reply, size_t reply_len, bool async);
-
-int hif_shutdown(struct wfx_dev *wdev);
-int hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len);
-int hif_reset(struct wfx_vif *wvif, bool reset_stat);
-int hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id,
-		 void *buf, size_t buf_size);
-int hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id,
-		  void *buf, size_t buf_size);
-int hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req80211,
-	     int chan_start, int chan_num, int *timeout);
-int hif_stop_scan(struct wfx_vif *wvif);
-int hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,
-	     struct ieee80211_channel *channel, const u8 *ssid, int ssidlen);
-int hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout);
-int hif_set_bss_params(struct wfx_vif *wvif, int aid, int beacon_lost_count);
-int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg);
-int hif_remove_key(struct wfx_dev *wdev, int idx);
-int hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue,
-			      const struct ieee80211_tx_queue_params *arg);
-int hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf,
-	      const struct ieee80211_channel *channel);
-int hif_beacon_transmit(struct wfx_vif *wvif, bool enable);
-int hif_map_link(struct wfx_vif *wvif,
-		 bool unmap, u8 *mac_addr, int sta_id, bool mfp);
-int hif_update_ie_beacon(struct wfx_vif *wvif, const u8 *ies, size_t ies_len);
-
-#endif
diff --git a/drivers/staging/wfx/hif_tx_mib.c b/drivers/staging/wfx/hif_tx_mib.c
deleted file mode 100644
index 1926cf1b62be..000000000000
--- a/drivers/staging/wfx/hif_tx_mib.c
+++ /dev/null
@@ -1,324 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Implementation of host-to-chip MIBs of WFxxx Split Mac (WSM) API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (C) 2010, ST-Ericsson SA
- */
-
-#include <linux/etherdevice.h>
-
-#include "wfx.h"
-#include "hif_tx.h"
-#include "hif_tx_mib.h"
-#include "hif_api_mib.h"
-
-int hif_set_output_power(struct wfx_vif *wvif, int val)
-{
-	struct hif_mib_current_tx_power_level arg = {
-		.power_level = cpu_to_le32(val * 10),
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_CURRENT_TX_POWER_LEVEL,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_beacon_wakeup_period(struct wfx_vif *wvif,
-				 unsigned int dtim_interval,
-				 unsigned int listen_interval)
-{
-	struct hif_mib_beacon_wake_up_period arg = {
-		.wakeup_period_min = dtim_interval,
-		.receive_dtim = 0,
-		.wakeup_period_max = listen_interval,
-	};
-
-	if (dtim_interval > 0xFF || listen_interval > 0xFFFF)
-		return -EINVAL;
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_BEACON_WAKEUP_PERIOD,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_rcpi_rssi_threshold(struct wfx_vif *wvif,
-				int rssi_thold, int rssi_hyst)
-{
-	struct hif_mib_rcpi_rssi_threshold arg = {
-		.rolling_average_count = 8,
-		.detection = 1,
-	};
-
-	if (!rssi_thold && !rssi_hyst) {
-		arg.upperthresh = 1;
-		arg.lowerthresh = 1;
-	} else {
-		arg.upper_threshold = rssi_thold + rssi_hyst;
-		arg.upper_threshold = (arg.upper_threshold + 110) * 2;
-		arg.lower_threshold = rssi_thold;
-		arg.lower_threshold = (arg.lower_threshold + 110) * 2;
-	}
-
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_RCPI_RSSI_THRESHOLD, &arg, sizeof(arg));
-}
-
-int hif_get_counters_table(struct wfx_dev *wdev, int vif_id,
-			   struct hif_mib_extended_count_table *arg)
-{
-	if (wfx_api_older_than(wdev, 1, 3)) {
-		// extended_count_table is wider than count_table
-		memset(arg, 0xFF, sizeof(*arg));
-		return hif_read_mib(wdev, vif_id, HIF_MIB_ID_COUNTERS_TABLE,
-				    arg, sizeof(struct hif_mib_count_table));
-	} else {
-		return hif_read_mib(wdev, vif_id,
-				    HIF_MIB_ID_EXTENDED_COUNTERS_TABLE, arg,
-				sizeof(struct hif_mib_extended_count_table));
-	}
-}
-
-int hif_set_macaddr(struct wfx_vif *wvif, u8 *mac)
-{
-	struct hif_mib_mac_address msg = { };
-
-	if (mac)
-		ether_addr_copy(msg.mac_addr, mac);
-	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_DOT11_MAC_ADDRESS,
-			     &msg, sizeof(msg));
-}
-
-int hif_set_rx_filter(struct wfx_vif *wvif,
-		      bool filter_bssid, bool filter_prbreq)
-{
-	struct hif_mib_rx_filter arg = { };
-
-	if (filter_bssid)
-		arg.bssid_filter = 1;
-	if (!filter_prbreq)
-		arg.fwd_probe_req = 1;
-	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_RX_FILTER,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_beacon_filter_table(struct wfx_vif *wvif, int tbl_len,
-				const struct hif_ie_table_entry *tbl)
-{
-	int ret;
-	struct hif_mib_bcn_filter_table *arg;
-	int buf_len = struct_size(arg, ie_table, tbl_len);
-
-	arg = kzalloc(buf_len, GFP_KERNEL);
-	if (!arg)
-		return -ENOMEM;
-	arg->num_of_info_elmts = cpu_to_le32(tbl_len);
-	memcpy(arg->ie_table, tbl, flex_array_size(arg, ie_table, tbl_len));
-	ret = hif_write_mib(wvif->wdev, wvif->id,
-			    HIF_MIB_ID_BEACON_FILTER_TABLE, arg, buf_len);
-	kfree(arg);
-	return ret;
-}
-
-int hif_beacon_filter_control(struct wfx_vif *wvif,
-			      int enable, int beacon_count)
-{
-	struct hif_mib_bcn_filter_enable arg = {
-		.enable = cpu_to_le32(enable),
-		.bcn_count = cpu_to_le32(beacon_count),
-	};
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_BEACON_FILTER_ENABLE,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_operational_mode(struct wfx_dev *wdev, enum hif_op_power_mode mode)
-{
-	struct hif_mib_gl_operational_power_mode arg = {
-		.power_mode = mode,
-		.wup_ind_activation = 1,
-	};
-
-	return hif_write_mib(wdev, -1, HIF_MIB_ID_GL_OPERATIONAL_POWER_MODE,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_template_frame(struct wfx_vif *wvif, struct sk_buff *skb,
-			   u8 frame_type, int init_rate)
-{
-	struct hif_mib_template_frame *arg;
-
-	WARN(skb->len > HIF_API_MAX_TEMPLATE_FRAME_SIZE, "frame is too big");
-	skb_push(skb, 4);
-	arg = (struct hif_mib_template_frame *)skb->data;
-	skb_pull(skb, 4);
-	arg->init_rate = init_rate;
-	arg->frame_type = frame_type;
-	arg->frame_length = cpu_to_le16(skb->len);
-	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_TEMPLATE_FRAME,
-			     arg, sizeof(*arg) + skb->len);
-}
-
-int hif_set_mfp(struct wfx_vif *wvif, bool capable, bool required)
-{
-	struct hif_mib_protected_mgmt_policy arg = { };
-
-	WARN(required && !capable, "incoherent arguments");
-	if (capable) {
-		arg.pmf_enable = 1;
-		arg.host_enc_auth_frames = 1;
-	}
-	if (!required)
-		arg.unpmf_allowed = 1;
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_PROTECTED_MGMT_POLICY,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_block_ack_policy(struct wfx_vif *wvif,
-			     u8 tx_tid_policy, u8 rx_tid_policy)
-{
-	struct hif_mib_block_ack_policy arg = {
-		.block_ack_tx_tid_policy = tx_tid_policy,
-		.block_ack_rx_tid_policy = rx_tid_policy,
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_BLOCK_ACK_POLICY,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_association_mode(struct wfx_vif *wvif, int ampdu_density,
-			     bool greenfield, bool short_preamble)
-{
-	struct hif_mib_set_association_mode arg = {
-		.preambtype_use = 1,
-		.mode = 1,
-		.spacing = 1,
-		.short_preamble = short_preamble,
-		.greenfield = greenfield,
-		.mpdu_start_spacing = ampdu_density,
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_SET_ASSOCIATION_MODE, &arg, sizeof(arg));
-}
-
-int hif_set_tx_rate_retry_policy(struct wfx_vif *wvif,
-				 int policy_index, u8 *rates)
-{
-	struct hif_mib_set_tx_rate_retry_policy *arg;
-	size_t size = struct_size(arg, tx_rate_retry_policy, 1);
-	int ret;
-
-	arg = kzalloc(size, GFP_KERNEL);
-	if (!arg)
-		return -ENOMEM;
-	arg->num_tx_rate_policies = 1;
-	arg->tx_rate_retry_policy[0].policy_index = policy_index;
-	arg->tx_rate_retry_policy[0].short_retry_count = 255;
-	arg->tx_rate_retry_policy[0].long_retry_count = 255;
-	arg->tx_rate_retry_policy[0].first_rate_sel = 1;
-	arg->tx_rate_retry_policy[0].terminate = 1;
-	arg->tx_rate_retry_policy[0].count_init = 1;
-	memcpy(&arg->tx_rate_retry_policy[0].rates, rates,
-	       sizeof(arg->tx_rate_retry_policy[0].rates));
-	ret = hif_write_mib(wvif->wdev, wvif->id,
-			    HIF_MIB_ID_SET_TX_RATE_RETRY_POLICY, arg, size);
-	kfree(arg);
-	return ret;
-}
-
-int hif_keep_alive_period(struct wfx_vif *wvif, int period)
-{
-	struct hif_mib_keep_alive_period arg = {
-		.keep_alive_period = cpu_to_le16(period),
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_KEEP_ALIVE_PERIOD,
-			     &arg, sizeof(arg));
-};
-
-int hif_set_arp_ipv4_filter(struct wfx_vif *wvif, int idx, __be32 *addr)
-{
-	struct hif_mib_arp_ip_addr_table arg = {
-		.condition_idx = idx,
-		.arp_enable = HIF_ARP_NS_FILTERING_DISABLE,
-	};
-
-	if (addr) {
-		// Caution: type of addr is __be32
-		memcpy(arg.ipv4_address, addr, sizeof(arg.ipv4_address));
-		arg.arp_enable = HIF_ARP_NS_FILTERING_ENABLE;
-	}
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_ARP_IP_ADDRESSES_TABLE,
-			     &arg, sizeof(arg));
-}
-
-int hif_use_multi_tx_conf(struct wfx_dev *wdev, bool enable)
-{
-	struct hif_mib_gl_set_multi_msg arg = {
-		.enable_multi_tx_conf = enable,
-	};
-
-	return hif_write_mib(wdev, -1, HIF_MIB_ID_GL_SET_MULTI_MSG,
-			     &arg, sizeof(arg));
-}
-
-int hif_set_uapsd_info(struct wfx_vif *wvif, unsigned long val)
-{
-	struct hif_mib_set_uapsd_information arg = { };
-
-	if (val & BIT(IEEE80211_AC_VO))
-		arg.trig_voice = 1;
-	if (val & BIT(IEEE80211_AC_VI))
-		arg.trig_video = 1;
-	if (val & BIT(IEEE80211_AC_BE))
-		arg.trig_be = 1;
-	if (val & BIT(IEEE80211_AC_BK))
-		arg.trig_bckgrnd = 1;
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_SET_UAPSD_INFORMATION,
-			     &arg, sizeof(arg));
-}
-
-int hif_erp_use_protection(struct wfx_vif *wvif, bool enable)
-{
-	struct hif_mib_non_erp_protection arg = {
-		.use_cts_to_self = enable,
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_NON_ERP_PROTECTION, &arg, sizeof(arg));
-}
-
-int hif_slot_time(struct wfx_vif *wvif, int val)
-{
-	struct hif_mib_slot_time arg = {
-		.slot_time = cpu_to_le32(val),
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id, HIF_MIB_ID_SLOT_TIME,
-			     &arg, sizeof(arg));
-}
-
-int hif_wep_default_key_id(struct wfx_vif *wvif, int val)
-{
-	struct hif_mib_wep_default_key_id arg = {
-		.wep_default_key_id = val,
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
-			     &arg, sizeof(arg));
-}
-
-int hif_rts_threshold(struct wfx_vif *wvif, int val)
-{
-	struct hif_mib_dot11_rts_threshold arg = {
-		.threshold = cpu_to_le32(val >= 0 ? val : 0xFFFF),
-	};
-
-	return hif_write_mib(wvif->wdev, wvif->id,
-			     HIF_MIB_ID_DOT11_RTS_THRESHOLD, &arg, sizeof(arg));
-}
diff --git a/drivers/staging/wfx/hif_tx_mib.h b/drivers/staging/wfx/hif_tx_mib.h
deleted file mode 100644
index 812b3ba0f00e..000000000000
--- a/drivers/staging/wfx/hif_tx_mib.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Implementation of host-to-chip MIBs of WFxxx Split Mac (WSM) API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (C) 2010, ST-Ericsson SA
- */
-#ifndef WFX_HIF_TX_MIB_H
-#define WFX_HIF_TX_MIB_H
-
-struct wfx_vif;
-struct sk_buff;
-
-int hif_set_output_power(struct wfx_vif *wvif, int val);
-int hif_set_beacon_wakeup_period(struct wfx_vif *wvif,
-				 unsigned int dtim_interval,
-				 unsigned int listen_interval);
-int hif_set_rcpi_rssi_threshold(struct wfx_vif *wvif,
-				int rssi_thold, int rssi_hyst);
-int hif_get_counters_table(struct wfx_dev *wdev, int vif_id,
-			   struct hif_mib_extended_count_table *arg);
-int hif_set_macaddr(struct wfx_vif *wvif, u8 *mac);
-int hif_set_rx_filter(struct wfx_vif *wvif,
-		      bool filter_bssid, bool fwd_probe_req);
-int hif_set_beacon_filter_table(struct wfx_vif *wvif, int tbl_len,
-				const struct hif_ie_table_entry *tbl);
-int hif_beacon_filter_control(struct wfx_vif *wvif,
-			      int enable, int beacon_count);
-int hif_set_operational_mode(struct wfx_dev *wdev, enum hif_op_power_mode mode);
-int hif_set_template_frame(struct wfx_vif *wvif, struct sk_buff *skb,
-			   u8 frame_type, int init_rate);
-int hif_set_mfp(struct wfx_vif *wvif, bool capable, bool required);
-int hif_set_block_ack_policy(struct wfx_vif *wvif,
-			     u8 tx_tid_policy, u8 rx_tid_policy);
-int hif_set_association_mode(struct wfx_vif *wvif, int ampdu_density,
-			     bool greenfield, bool short_preamble);
-int hif_set_tx_rate_retry_policy(struct wfx_vif *wvif,
-				 int policy_index, u8 *rates);
-int hif_keep_alive_period(struct wfx_vif *wvif, int period);
-int hif_set_arp_ipv4_filter(struct wfx_vif *wvif, int idx, __be32 *addr);
-int hif_use_multi_tx_conf(struct wfx_dev *wdev, bool enable);
-int hif_set_uapsd_info(struct wfx_vif *wvif, unsigned long val);
-int hif_erp_use_protection(struct wfx_vif *wvif, bool enable);
-int hif_slot_time(struct wfx_vif *wvif, int val);
-int hif_wep_default_key_id(struct wfx_vif *wvif, int val);
-int hif_rts_threshold(struct wfx_vif *wvif, int val);
-
-#endif
diff --git a/drivers/staging/wfx/hwio.c b/drivers/staging/wfx/hwio.c
deleted file mode 100644
index 36fbc5b5d64c..000000000000
--- a/drivers/staging/wfx/hwio.c
+++ /dev/null
@@ -1,352 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Low-level I/O functions.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-
-#include "hwio.h"
-#include "wfx.h"
-#include "bus.h"
-#include "traces.h"
-
-/*
- * Internal helpers.
- *
- * About CONFIG_VMAP_STACK:
- * When CONFIG_VMAP_STACK is enabled, it is not possible to run DMA on stack
- * allocated data. Functions below that work with registers (aka functions
- * ending with "32") automatically reallocate buffers with kmalloc. However,
- * functions that work with arbitrary length buffers let's caller to handle
- * memory location. In doubt, enable CONFIG_DEBUG_SG to detect badly located
- * buffer.
- */
-
-static int read32(struct wfx_dev *wdev, int reg, u32 *val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	*val = ~0; // Never return undefined value
-	if (!tmp)
-		return -ENOMEM;
-	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, reg, tmp,
-					    sizeof(u32));
-	if (ret >= 0)
-		*val = le32_to_cpu(*tmp);
-	kfree(tmp);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n",
-			__func__, ret);
-	return ret;
-}
-
-static int write32(struct wfx_dev *wdev, int reg, u32 val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	if (!tmp)
-		return -ENOMEM;
-	*tmp = cpu_to_le32(val);
-	ret = wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, reg, tmp,
-					  sizeof(u32));
-	kfree(tmp);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n",
-			__func__, ret);
-	return ret;
-}
-
-static int read32_locked(struct wfx_dev *wdev, int reg, u32 *val)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = read32(wdev, reg, val);
-	_trace_io_read32(reg, *val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int write32_locked(struct wfx_dev *wdev, int reg, u32 val)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = write32(wdev, reg, val);
-	_trace_io_write32(reg, val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int write32_bits_locked(struct wfx_dev *wdev, int reg, u32 mask, u32 val)
-{
-	int ret;
-	u32 val_r, val_w;
-
-	WARN_ON(~mask & val);
-	val &= mask;
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = read32(wdev, reg, &val_r);
-	_trace_io_read32(reg, val_r);
-	if (ret < 0)
-		goto err;
-	val_w = (val_r & ~mask) | val;
-	if (val_w != val_r) {
-		ret = write32(wdev, reg, val_w);
-		_trace_io_write32(reg, val_w);
-	}
-err:
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int indirect_read(struct wfx_dev *wdev, int reg, u32 addr,
-			 void *buf, size_t len)
-{
-	int ret;
-	int i;
-	u32 cfg;
-	u32 prefetch;
-
-	WARN_ON(len >= 0x2000);
-	WARN_ON(reg != WFX_REG_AHB_DPORT && reg != WFX_REG_SRAM_DPORT);
-
-	if (reg == WFX_REG_AHB_DPORT)
-		prefetch = CFG_PREFETCH_AHB;
-	else if (reg == WFX_REG_SRAM_DPORT)
-		prefetch = CFG_PREFETCH_SRAM;
-	else
-		return -ENODEV;
-
-	ret = write32(wdev, WFX_REG_BASE_ADDR, addr);
-	if (ret < 0)
-		goto err;
-
-	ret = read32(wdev, WFX_REG_CONFIG, &cfg);
-	if (ret < 0)
-		goto err;
-
-	ret = write32(wdev, WFX_REG_CONFIG, cfg | prefetch);
-	if (ret < 0)
-		goto err;
-
-	for (i = 0; i < 20; i++) {
-		ret = read32(wdev, WFX_REG_CONFIG, &cfg);
-		if (ret < 0)
-			goto err;
-		if (!(cfg & prefetch))
-			break;
-		usleep_range(200, 250);
-	}
-	if (i == 20) {
-		ret = -ETIMEDOUT;
-		goto err;
-	}
-
-	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, reg, buf, len);
-
-err:
-	if (ret < 0)
-		memset(buf, 0xFF, len); // Never return undefined value
-	return ret;
-}
-
-static int indirect_write(struct wfx_dev *wdev, int reg, u32 addr,
-			  const void *buf, size_t len)
-{
-	int ret;
-
-	WARN_ON(len >= 0x2000);
-	WARN_ON(reg != WFX_REG_AHB_DPORT && reg != WFX_REG_SRAM_DPORT);
-	ret = write32(wdev, WFX_REG_BASE_ADDR, addr);
-	if (ret < 0)
-		return ret;
-
-	return wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, reg, buf, len);
-}
-
-static int indirect_read_locked(struct wfx_dev *wdev, int reg, u32 addr,
-				void *buf, size_t len)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = indirect_read(wdev, reg, addr, buf, len);
-	_trace_io_ind_read(reg, addr, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int indirect_write_locked(struct wfx_dev *wdev, int reg, u32 addr,
-				 const void *buf, size_t len)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = indirect_write(wdev, reg, addr, buf, len);
-	_trace_io_ind_write(reg, addr, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int indirect_read32_locked(struct wfx_dev *wdev, int reg,
-				  u32 addr, u32 *val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	if (!tmp)
-		return -ENOMEM;
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = indirect_read(wdev, reg, addr, tmp, sizeof(u32));
-	*val = le32_to_cpu(*tmp);
-	_trace_io_ind_read32(reg, addr, *val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	kfree(tmp);
-	return ret;
-}
-
-static int indirect_write32_locked(struct wfx_dev *wdev, int reg,
-				   u32 addr, u32 val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	if (!tmp)
-		return -ENOMEM;
-	*tmp = cpu_to_le32(val);
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = indirect_write(wdev, reg, addr, tmp, sizeof(u32));
-	_trace_io_ind_write32(reg, addr, val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	kfree(tmp);
-	return ret;
-}
-
-int wfx_data_read(struct wfx_dev *wdev, void *buf, size_t len)
-{
-	int ret;
-
-	WARN((long)buf & 3, "%s: unaligned buffer", __func__);
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv,
-					    WFX_REG_IN_OUT_QUEUE, buf, len);
-	_trace_io_read(WFX_REG_IN_OUT_QUEUE, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n",
-			__func__, ret);
-	return ret;
-}
-
-int wfx_data_write(struct wfx_dev *wdev, const void *buf, size_t len)
-{
-	int ret;
-
-	WARN((long)buf & 3, "%s: unaligned buffer", __func__);
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv,
-					  WFX_REG_IN_OUT_QUEUE, buf, len);
-	_trace_io_write(WFX_REG_IN_OUT_QUEUE, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n",
-			__func__, ret);
-	return ret;
-}
-
-int sram_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len)
-{
-	return indirect_read_locked(wdev, WFX_REG_SRAM_DPORT, addr, buf, len);
-}
-
-int ahb_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len)
-{
-	return indirect_read_locked(wdev, WFX_REG_AHB_DPORT, addr, buf, len);
-}
-
-int sram_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len)
-{
-	return indirect_write_locked(wdev, WFX_REG_SRAM_DPORT, addr, buf, len);
-}
-
-int ahb_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len)
-{
-	return indirect_write_locked(wdev, WFX_REG_AHB_DPORT, addr, buf, len);
-}
-
-int sram_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val)
-{
-	return indirect_read32_locked(wdev, WFX_REG_SRAM_DPORT, addr, val);
-}
-
-int ahb_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val)
-{
-	return indirect_read32_locked(wdev, WFX_REG_AHB_DPORT, addr, val);
-}
-
-int sram_reg_write(struct wfx_dev *wdev, u32 addr, u32 val)
-{
-	return indirect_write32_locked(wdev, WFX_REG_SRAM_DPORT, addr, val);
-}
-
-int ahb_reg_write(struct wfx_dev *wdev, u32 addr, u32 val)
-{
-	return indirect_write32_locked(wdev, WFX_REG_AHB_DPORT, addr, val);
-}
-
-int config_reg_read(struct wfx_dev *wdev, u32 *val)
-{
-	return read32_locked(wdev, WFX_REG_CONFIG, val);
-}
-
-int config_reg_write(struct wfx_dev *wdev, u32 val)
-{
-	return write32_locked(wdev, WFX_REG_CONFIG, val);
-}
-
-int config_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val)
-{
-	return write32_bits_locked(wdev, WFX_REG_CONFIG, mask, val);
-}
-
-int control_reg_read(struct wfx_dev *wdev, u32 *val)
-{
-	return read32_locked(wdev, WFX_REG_CONTROL, val);
-}
-
-int control_reg_write(struct wfx_dev *wdev, u32 val)
-{
-	return write32_locked(wdev, WFX_REG_CONTROL, val);
-}
-
-int control_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val)
-{
-	return write32_bits_locked(wdev, WFX_REG_CONTROL, mask, val);
-}
-
-int igpr_reg_read(struct wfx_dev *wdev, int index, u32 *val)
-{
-	int ret;
-
-	*val = ~0; // Never return undefined value
-	ret = write32_locked(wdev, WFX_REG_SET_GEN_R_W, IGPR_RW | index << 24);
-	if (ret)
-		return ret;
-	ret = read32_locked(wdev, WFX_REG_SET_GEN_R_W, val);
-	if (ret)
-		return ret;
-	*val &= IGPR_VALUE;
-	return ret;
-}
-
-int igpr_reg_write(struct wfx_dev *wdev, int index, u32 val)
-{
-	return write32_locked(wdev, WFX_REG_SET_GEN_R_W, index << 24 | val);
-}
diff --git a/drivers/staging/wfx/hwio.h b/drivers/staging/wfx/hwio.h
deleted file mode 100644
index 0b8e4f7157df..000000000000
--- a/drivers/staging/wfx/hwio.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Low-level API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_HWIO_H
-#define WFX_HWIO_H
-
-#include <linux/types.h>
-
-struct wfx_dev;
-
-int wfx_data_read(struct wfx_dev *wdev, void *buf, size_t buf_len);
-int wfx_data_write(struct wfx_dev *wdev, const void *buf, size_t buf_len);
-
-int sram_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len);
-int sram_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len);
-
-int ahb_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len);
-int ahb_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len);
-
-int sram_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val);
-int sram_reg_write(struct wfx_dev *wdev, u32 addr, u32 val);
-
-int ahb_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val);
-int ahb_reg_write(struct wfx_dev *wdev, u32 addr, u32 val);
-
-#define CFG_ERR_SPI_FRAME          0x00000001 // only with SPI
-#define CFG_ERR_SDIO_BUF_MISMATCH  0x00000001 // only with SDIO
-#define CFG_ERR_BUF_UNDERRUN       0x00000002
-#define CFG_ERR_DATA_IN_TOO_LARGE  0x00000004
-#define CFG_ERR_HOST_NO_OUT_QUEUE  0x00000008
-#define CFG_ERR_BUF_OVERRUN        0x00000010
-#define CFG_ERR_DATA_OUT_TOO_LARGE 0x00000020
-#define CFG_ERR_HOST_NO_IN_QUEUE   0x00000040
-#define CFG_ERR_HOST_CRC_MISS      0x00000080 // only with SDIO
-#define CFG_SPI_IGNORE_CS          0x00000080 // only with SPI
-#define CFG_BYTE_ORDER_MASK        0x00000300 // only writable with SPI
-#define     CFG_BYTE_ORDER_BADC    0x00000000
-#define     CFG_BYTE_ORDER_DCBA    0x00000100
-#define     CFG_BYTE_ORDER_ABCD    0x00000200 // SDIO always use this value
-#define CFG_DIRECT_ACCESS_MODE     0x00000400
-#define CFG_PREFETCH_AHB           0x00000800
-#define CFG_DISABLE_CPU_CLK        0x00001000
-#define CFG_PREFETCH_SRAM          0x00002000
-#define CFG_CPU_RESET              0x00004000
-#define CFG_SDIO_DISABLE_IRQ       0x00008000 // only with SDIO
-#define CFG_IRQ_ENABLE_DATA        0x00010000
-#define CFG_IRQ_ENABLE_WRDY        0x00020000
-#define CFG_CLK_RISE_EDGE          0x00040000
-#define CFG_SDIO_DISABLE_CRC_CHK   0x00080000 // only with SDIO
-#define CFG_RESERVED               0x00F00000
-#define CFG_DEVICE_ID_MAJOR        0x07000000
-#define CFG_DEVICE_ID_RESERVED     0x78000000
-#define CFG_DEVICE_ID_TYPE         0x80000000
-int config_reg_read(struct wfx_dev *wdev, u32 *val);
-int config_reg_write(struct wfx_dev *wdev, u32 val);
-int config_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val);
-
-#define CTRL_NEXT_LEN_MASK   0x00000FFF
-#define CTRL_WLAN_WAKEUP     0x00001000
-#define CTRL_WLAN_READY      0x00002000
-int control_reg_read(struct wfx_dev *wdev, u32 *val);
-int control_reg_write(struct wfx_dev *wdev, u32 val);
-int control_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val);
-
-#define IGPR_RW          0x80000000
-#define IGPR_INDEX       0x7F000000
-#define IGPR_VALUE       0x00FFFFFF
-int igpr_reg_read(struct wfx_dev *wdev, int index, u32 *val);
-int igpr_reg_write(struct wfx_dev *wdev, int index, u32 val);
-
-#endif /* WFX_HWIO_H */
diff --git a/drivers/staging/wfx/key.c b/drivers/staging/wfx/key.c
deleted file mode 100644
index 2ab82bed4c1b..000000000000
--- a/drivers/staging/wfx/key.c
+++ /dev/null
@@ -1,241 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Key management related functions.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/etherdevice.h>
-#include <net/mac80211.h>
-
-#include "key.h"
-#include "wfx.h"
-#include "hif_tx_mib.h"
-
-static int wfx_alloc_key(struct wfx_dev *wdev)
-{
-	int idx;
-
-	idx = ffs(~wdev->key_map) - 1;
-	if (idx < 0 || idx >= MAX_KEY_ENTRIES)
-		return -1;
-
-	wdev->key_map |= BIT(idx);
-	return idx;
-}
-
-static void wfx_free_key(struct wfx_dev *wdev, int idx)
-{
-	WARN(!(wdev->key_map & BIT(idx)), "inconsistent key allocation");
-	wdev->key_map &= ~BIT(idx);
-}
-
-static u8 fill_wep_pair(struct hif_wep_pairwise_key *msg,
-			     struct ieee80211_key_conf *key, u8 *peer_addr)
-{
-	WARN(key->keylen > sizeof(msg->key_data), "inconsistent data");
-	msg->key_length = key->keylen;
-	memcpy(msg->key_data, key->key, key->keylen);
-	ether_addr_copy(msg->peer_address, peer_addr);
-	return HIF_KEY_TYPE_WEP_PAIRWISE;
-}
-
-static u8 fill_wep_group(struct hif_wep_group_key *msg,
-			      struct ieee80211_key_conf *key)
-{
-	WARN(key->keylen > sizeof(msg->key_data), "inconsistent data");
-	msg->key_id = key->keyidx;
-	msg->key_length = key->keylen;
-	memcpy(msg->key_data, key->key, key->keylen);
-	return HIF_KEY_TYPE_WEP_DEFAULT;
-}
-
-static u8 fill_tkip_pair(struct hif_tkip_pairwise_key *msg,
-			      struct ieee80211_key_conf *key, u8 *peer_addr)
-{
-	u8 *keybuf = key->key;
-
-	WARN(key->keylen != sizeof(msg->tkip_key_data)
-			    + sizeof(msg->tx_mic_key)
-			    + sizeof(msg->rx_mic_key), "inconsistent data");
-	memcpy(msg->tkip_key_data, keybuf, sizeof(msg->tkip_key_data));
-	keybuf += sizeof(msg->tkip_key_data);
-	memcpy(msg->tx_mic_key, keybuf, sizeof(msg->tx_mic_key));
-	keybuf += sizeof(msg->tx_mic_key);
-	memcpy(msg->rx_mic_key, keybuf, sizeof(msg->rx_mic_key));
-	ether_addr_copy(msg->peer_address, peer_addr);
-	return HIF_KEY_TYPE_TKIP_PAIRWISE;
-}
-
-static u8 fill_tkip_group(struct hif_tkip_group_key *msg,
-			       struct ieee80211_key_conf *key,
-			       struct ieee80211_key_seq *seq,
-			       enum nl80211_iftype iftype)
-{
-	u8 *keybuf = key->key;
-
-	WARN(key->keylen != sizeof(msg->tkip_key_data)
-			    + 2 * sizeof(msg->rx_mic_key), "inconsistent data");
-	msg->key_id = key->keyidx;
-	memcpy(msg->rx_sequence_counter,
-	       &seq->tkip.iv16, sizeof(seq->tkip.iv16));
-	memcpy(msg->rx_sequence_counter + sizeof(u16),
-	       &seq->tkip.iv32, sizeof(seq->tkip.iv32));
-	memcpy(msg->tkip_key_data, keybuf, sizeof(msg->tkip_key_data));
-	keybuf += sizeof(msg->tkip_key_data);
-	if (iftype == NL80211_IFTYPE_AP)
-		// Use Tx MIC Key
-		memcpy(msg->rx_mic_key, keybuf + 0, sizeof(msg->rx_mic_key));
-	else
-		// Use Rx MIC Key
-		memcpy(msg->rx_mic_key, keybuf + 8, sizeof(msg->rx_mic_key));
-	return HIF_KEY_TYPE_TKIP_GROUP;
-}
-
-static u8 fill_ccmp_pair(struct hif_aes_pairwise_key *msg,
-			      struct ieee80211_key_conf *key, u8 *peer_addr)
-{
-	WARN(key->keylen != sizeof(msg->aes_key_data), "inconsistent data");
-	ether_addr_copy(msg->peer_address, peer_addr);
-	memcpy(msg->aes_key_data, key->key, key->keylen);
-	return HIF_KEY_TYPE_AES_PAIRWISE;
-}
-
-static u8 fill_ccmp_group(struct hif_aes_group_key *msg,
-			       struct ieee80211_key_conf *key,
-			       struct ieee80211_key_seq *seq)
-{
-	WARN(key->keylen != sizeof(msg->aes_key_data), "inconsistent data");
-	memcpy(msg->aes_key_data, key->key, key->keylen);
-	memcpy(msg->rx_sequence_counter, seq->ccmp.pn, sizeof(seq->ccmp.pn));
-	memreverse(msg->rx_sequence_counter, sizeof(seq->ccmp.pn));
-	msg->key_id = key->keyidx;
-	return HIF_KEY_TYPE_AES_GROUP;
-}
-
-static u8 fill_sms4_pair(struct hif_wapi_pairwise_key *msg,
-			      struct ieee80211_key_conf *key, u8 *peer_addr)
-{
-	u8 *keybuf = key->key;
-
-	WARN(key->keylen != sizeof(msg->wapi_key_data)
-			    + sizeof(msg->mic_key_data), "inconsistent data");
-	ether_addr_copy(msg->peer_address, peer_addr);
-	memcpy(msg->wapi_key_data, keybuf, sizeof(msg->wapi_key_data));
-	keybuf += sizeof(msg->wapi_key_data);
-	memcpy(msg->mic_key_data, keybuf, sizeof(msg->mic_key_data));
-	msg->key_id = key->keyidx;
-	return HIF_KEY_TYPE_WAPI_PAIRWISE;
-}
-
-static u8 fill_sms4_group(struct hif_wapi_group_key *msg,
-			       struct ieee80211_key_conf *key)
-{
-	u8 *keybuf = key->key;
-
-	WARN(key->keylen != sizeof(msg->wapi_key_data)
-			    + sizeof(msg->mic_key_data), "inconsistent data");
-	memcpy(msg->wapi_key_data, keybuf, sizeof(msg->wapi_key_data));
-	keybuf += sizeof(msg->wapi_key_data);
-	memcpy(msg->mic_key_data, keybuf, sizeof(msg->mic_key_data));
-	msg->key_id = key->keyidx;
-	return HIF_KEY_TYPE_WAPI_GROUP;
-}
-
-static u8 fill_aes_cmac_group(struct hif_igtk_group_key *msg,
-				   struct ieee80211_key_conf *key,
-				   struct ieee80211_key_seq *seq)
-{
-	WARN(key->keylen != sizeof(msg->igtk_key_data), "inconsistent data");
-	memcpy(msg->igtk_key_data, key->key, key->keylen);
-	memcpy(msg->ipn, seq->aes_cmac.pn, sizeof(seq->aes_cmac.pn));
-	memreverse(msg->ipn, sizeof(seq->aes_cmac.pn));
-	msg->key_id = key->keyidx;
-	return HIF_KEY_TYPE_IGTK_GROUP;
-}
-
-static int wfx_add_key(struct wfx_vif *wvif, struct ieee80211_sta *sta,
-		       struct ieee80211_key_conf *key)
-{
-	int ret;
-	struct hif_req_add_key k = { };
-	struct ieee80211_key_seq seq;
-	struct wfx_dev *wdev = wvif->wdev;
-	int idx = wfx_alloc_key(wvif->wdev);
-	bool pairwise = key->flags & IEEE80211_KEY_FLAG_PAIRWISE;
-
-	WARN(key->flags & IEEE80211_KEY_FLAG_PAIRWISE && !sta, "inconsistent data");
-	ieee80211_get_key_rx_seq(key, 0, &seq);
-	if (idx < 0)
-		return -EINVAL;
-	k.int_id = wvif->id;
-	k.entry_index = idx;
-	if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
-	    key->cipher == WLAN_CIPHER_SUITE_WEP104) {
-		if (pairwise)
-			k.type = fill_wep_pair(&k.key.wep_pairwise_key, key,
-					       sta->addr);
-		else
-			k.type = fill_wep_group(&k.key.wep_group_key, key);
-	} else if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {
-		if (pairwise)
-			k.type = fill_tkip_pair(&k.key.tkip_pairwise_key, key,
-						sta->addr);
-		else
-			k.type = fill_tkip_group(&k.key.tkip_group_key, key,
-						 &seq, wvif->vif->type);
-	} else if (key->cipher == WLAN_CIPHER_SUITE_CCMP) {
-		if (pairwise)
-			k.type = fill_ccmp_pair(&k.key.aes_pairwise_key, key,
-						sta->addr);
-		else
-			k.type = fill_ccmp_group(&k.key.aes_group_key, key,
-						 &seq);
-	} else if (key->cipher == WLAN_CIPHER_SUITE_SMS4) {
-		if (pairwise)
-			k.type = fill_sms4_pair(&k.key.wapi_pairwise_key, key,
-						sta->addr);
-		else
-			k.type = fill_sms4_group(&k.key.wapi_group_key, key);
-	} else if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
-		k.type = fill_aes_cmac_group(&k.key.igtk_group_key, key, &seq);
-		key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIE;
-	} else {
-		dev_warn(wdev->dev, "unsupported key type %d\n", key->cipher);
-		wfx_free_key(wdev, idx);
-		return -EOPNOTSUPP;
-	}
-	ret = hif_add_key(wdev, &k);
-	if (ret) {
-		wfx_free_key(wdev, idx);
-		return -EOPNOTSUPP;
-	}
-	key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
-		      IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
-	key->hw_key_idx = idx;
-	return 0;
-}
-
-static int wfx_remove_key(struct wfx_vif *wvif, struct ieee80211_key_conf *key)
-{
-	WARN(key->hw_key_idx >= MAX_KEY_ENTRIES, "corrupted hw_key_idx");
-	wfx_free_key(wvif->wdev, key->hw_key_idx);
-	return hif_remove_key(wvif->wdev, key->hw_key_idx);
-}
-
-int wfx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
-		struct ieee80211_vif *vif, struct ieee80211_sta *sta,
-		struct ieee80211_key_conf *key)
-{
-	int ret = -EOPNOTSUPP;
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	mutex_lock(&wvif->wdev->conf_mutex);
-	if (cmd == SET_KEY)
-		ret = wfx_add_key(wvif, sta, key);
-	if (cmd == DISABLE_KEY)
-		ret = wfx_remove_key(wvif, key);
-	mutex_unlock(&wvif->wdev->conf_mutex);
-	return ret;
-}
-
diff --git a/drivers/staging/wfx/key.h b/drivers/staging/wfx/key.h
deleted file mode 100644
index 70a44d0ca35e..000000000000
--- a/drivers/staging/wfx/key.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Implementation of mac80211 API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_KEY_H
-#define WFX_KEY_H
-
-#include <net/mac80211.h>
-
-struct wfx_dev;
-struct wfx_vif;
-
-int wfx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
-		struct ieee80211_vif *vif, struct ieee80211_sta *sta,
-		struct ieee80211_key_conf *key);
-
-#endif /* WFX_STA_H */
diff --git a/drivers/staging/wfx/main.c b/drivers/staging/wfx/main.c
deleted file mode 100644
index e7bc1988124a..000000000000
--- a/drivers/staging/wfx/main.c
+++ /dev/null
@@ -1,490 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Device probe and register.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (c) 2008, Johannes Berg <johannes@sipsolutions.net>
- * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
- * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
- * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
- * Copyright (c) 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
- */
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_net.h>
-#include <linux/gpio/consumer.h>
-#include <linux/mmc/sdio_func.h>
-#include <linux/spi/spi.h>
-#include <linux/etherdevice.h>
-#include <linux/firmware.h>
-
-#include "main.h"
-#include "wfx.h"
-#include "fwio.h"
-#include "hwio.h"
-#include "bus.h"
-#include "bh.h"
-#include "sta.h"
-#include "key.h"
-#include "scan.h"
-#include "debug.h"
-#include "data_tx.h"
-#include "hif_tx_mib.h"
-#include "hif_api_cmd.h"
-
-#define WFX_PDS_MAX_SIZE 1500
-
-MODULE_DESCRIPTION("Silicon Labs 802.11 Wireless LAN driver for WFx");
-MODULE_AUTHOR("Jérôme Pouiller <jerome.pouiller@silabs.com>");
-MODULE_LICENSE("GPL");
-
-#define RATETAB_ENT(_rate, _rateid, _flags) { \
-	.bitrate  = (_rate),   \
-	.hw_value = (_rateid), \
-	.flags    = (_flags),  \
-}
-
-static struct ieee80211_rate wfx_rates[] = {
-	RATETAB_ENT(10,  0,  0),
-	RATETAB_ENT(20,  1,  IEEE80211_RATE_SHORT_PREAMBLE),
-	RATETAB_ENT(55,  2,  IEEE80211_RATE_SHORT_PREAMBLE),
-	RATETAB_ENT(110, 3,  IEEE80211_RATE_SHORT_PREAMBLE),
-	RATETAB_ENT(60,  6,  0),
-	RATETAB_ENT(90,  7,  0),
-	RATETAB_ENT(120, 8,  0),
-	RATETAB_ENT(180, 9,  0),
-	RATETAB_ENT(240, 10, 0),
-	RATETAB_ENT(360, 11, 0),
-	RATETAB_ENT(480, 12, 0),
-	RATETAB_ENT(540, 13, 0),
-};
-
-#define CHAN2G(_channel, _freq, _flags) { \
-	.band = NL80211_BAND_2GHZ, \
-	.center_freq = (_freq),    \
-	.hw_value = (_channel),    \
-	.flags = (_flags),         \
-	.max_antenna_gain = 0,     \
-	.max_power = 30,           \
-}
-
-static struct ieee80211_channel wfx_2ghz_chantable[] = {
-	CHAN2G(1,  2412, 0),
-	CHAN2G(2,  2417, 0),
-	CHAN2G(3,  2422, 0),
-	CHAN2G(4,  2427, 0),
-	CHAN2G(5,  2432, 0),
-	CHAN2G(6,  2437, 0),
-	CHAN2G(7,  2442, 0),
-	CHAN2G(8,  2447, 0),
-	CHAN2G(9,  2452, 0),
-	CHAN2G(10, 2457, 0),
-	CHAN2G(11, 2462, 0),
-	CHAN2G(12, 2467, 0),
-	CHAN2G(13, 2472, 0),
-	CHAN2G(14, 2484, 0),
-};
-
-static const struct ieee80211_supported_band wfx_band_2ghz = {
-	.channels = wfx_2ghz_chantable,
-	.n_channels = ARRAY_SIZE(wfx_2ghz_chantable),
-	.bitrates = wfx_rates,
-	.n_bitrates = ARRAY_SIZE(wfx_rates),
-	.ht_cap = {
-		// Receive caps
-		.cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
-		       IEEE80211_HT_CAP_MAX_AMSDU |
-		       (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT),
-		.ht_supported = 1,
-		.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K,
-		.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
-		.mcs = {
-			.rx_mask = { 0xFF }, // MCS0 to MCS7
-			.rx_highest = cpu_to_le16(72),
-			.tx_params = IEEE80211_HT_MCS_TX_DEFINED,
-		},
-	},
-};
-
-static const struct ieee80211_iface_limit wdev_iface_limits[] = {
-	{ .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
-	{ .max = 1, .types = BIT(NL80211_IFTYPE_AP) },
-};
-
-static const struct ieee80211_iface_combination wfx_iface_combinations[] = {
-	{
-		.num_different_channels = 2,
-		.max_interfaces = 2,
-		.limits = wdev_iface_limits,
-		.n_limits = ARRAY_SIZE(wdev_iface_limits),
-	}
-};
-
-static const struct ieee80211_ops wfx_ops = {
-	.start			= wfx_start,
-	.stop			= wfx_stop,
-	.add_interface		= wfx_add_interface,
-	.remove_interface	= wfx_remove_interface,
-	.config                 = wfx_config,
-	.tx			= wfx_tx,
-	.join_ibss		= wfx_join_ibss,
-	.leave_ibss		= wfx_leave_ibss,
-	.conf_tx		= wfx_conf_tx,
-	.hw_scan		= wfx_hw_scan,
-	.cancel_hw_scan		= wfx_cancel_hw_scan,
-	.start_ap		= wfx_start_ap,
-	.stop_ap		= wfx_stop_ap,
-	.sta_add		= wfx_sta_add,
-	.sta_remove		= wfx_sta_remove,
-	.set_tim		= wfx_set_tim,
-	.set_key		= wfx_set_key,
-	.set_rts_threshold	= wfx_set_rts_threshold,
-	.set_default_unicast_key = wfx_set_default_unicast_key,
-	.bss_info_changed	= wfx_bss_info_changed,
-	.configure_filter	= wfx_configure_filter,
-	.ampdu_action		= wfx_ampdu_action,
-	.flush			= wfx_flush,
-	.add_chanctx		= wfx_add_chanctx,
-	.remove_chanctx		= wfx_remove_chanctx,
-	.change_chanctx		= wfx_change_chanctx,
-	.assign_vif_chanctx	= wfx_assign_vif_chanctx,
-	.unassign_vif_chanctx	= wfx_unassign_vif_chanctx,
-};
-
-bool wfx_api_older_than(struct wfx_dev *wdev, int major, int minor)
-{
-	if (wdev->hw_caps.api_version_major < major)
-		return true;
-	if (wdev->hw_caps.api_version_major > major)
-		return false;
-	if (wdev->hw_caps.api_version_minor < minor)
-		return true;
-	return false;
-}
-
-/* NOTE: wfx_send_pds() destroy buf */
-int wfx_send_pds(struct wfx_dev *wdev, u8 *buf, size_t len)
-{
-	int ret;
-	int start, brace_level, i;
-
-	start = 0;
-	brace_level = 0;
-	if (buf[0] != '{') {
-		dev_err(wdev->dev, "valid PDS start with '{'. Did you forget to compress it?\n");
-		return -EINVAL;
-	}
-	for (i = 1; i < len - 1; i++) {
-		if (buf[i] == '{')
-			brace_level++;
-		if (buf[i] == '}')
-			brace_level--;
-		if (buf[i] == '}' && !brace_level) {
-			i++;
-			if (i - start + 1 > WFX_PDS_MAX_SIZE)
-				return -EFBIG;
-			buf[start] = '{';
-			buf[i] = 0;
-			dev_dbg(wdev->dev, "send PDS '%s}'\n", buf + start);
-			buf[i] = '}';
-			ret = hif_configuration(wdev, buf + start,
-						i - start + 1);
-			if (ret > 0) {
-				dev_err(wdev->dev, "PDS bytes %d to %d: invalid data (unsupported options?)\n",
-					start, i);
-				return -EINVAL;
-			}
-			if (ret == -ETIMEDOUT) {
-				dev_err(wdev->dev, "PDS bytes %d to %d: chip didn't reply (corrupted file?)\n",
-					start, i);
-				return ret;
-			}
-			if (ret) {
-				dev_err(wdev->dev, "PDS bytes %d to %d: chip returned an unknown error\n",
-					start, i);
-				return -EIO;
-			}
-			buf[i] = ',';
-			start = i;
-		}
-	}
-	return 0;
-}
-
-static int wfx_send_pdata_pds(struct wfx_dev *wdev)
-{
-	int ret = 0;
-	const struct firmware *pds;
-	u8 *tmp_buf;
-
-	ret = request_firmware(&pds, wdev->pdata.file_pds, wdev->dev);
-	if (ret) {
-		dev_err(wdev->dev, "can't load PDS file %s\n",
-			wdev->pdata.file_pds);
-		goto err1;
-	}
-	tmp_buf = kmemdup(pds->data, pds->size, GFP_KERNEL);
-	if (!tmp_buf) {
-		ret = -ENOMEM;
-		goto err2;
-	}
-	ret = wfx_send_pds(wdev, tmp_buf, pds->size);
-	kfree(tmp_buf);
-err2:
-	release_firmware(pds);
-err1:
-	return ret;
-}
-
-static void wfx_free_common(void *data)
-{
-	struct wfx_dev *wdev = data;
-
-	mutex_destroy(&wdev->tx_power_loop_info_lock);
-	mutex_destroy(&wdev->rx_stats_lock);
-	mutex_destroy(&wdev->conf_mutex);
-	ieee80211_free_hw(wdev->hw);
-}
-
-struct wfx_dev *wfx_init_common(struct device *dev,
-				const struct wfx_platform_data *pdata,
-				const struct hwbus_ops *hwbus_ops,
-				void *hwbus_priv)
-{
-	struct ieee80211_hw *hw;
-	struct wfx_dev *wdev;
-
-	hw = ieee80211_alloc_hw(sizeof(struct wfx_dev), &wfx_ops);
-	if (!hw)
-		return NULL;
-
-	SET_IEEE80211_DEV(hw, dev);
-
-	ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
-	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
-	ieee80211_hw_set(hw, CONNECTION_MONITOR);
-	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
-	ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
-	ieee80211_hw_set(hw, SIGNAL_DBM);
-	ieee80211_hw_set(hw, SUPPORTS_PS);
-	ieee80211_hw_set(hw, MFP_CAPABLE);
-
-	hw->vif_data_size = sizeof(struct wfx_vif);
-	hw->sta_data_size = sizeof(struct wfx_sta_priv);
-	hw->queues = 4;
-	hw->max_rates = 8;
-	hw->max_rate_tries = 8;
-	hw->extra_tx_headroom = sizeof(struct hif_msg)
-				+ sizeof(struct hif_req_tx)
-				+ 4 /* alignment */ + 8 /* TKIP IV */;
-	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
-				     BIT(NL80211_IFTYPE_ADHOC) |
-				     BIT(NL80211_IFTYPE_AP);
-	hw->wiphy->probe_resp_offload = NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
-					NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
-					NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P |
-					NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U;
-	hw->wiphy->features |= NL80211_FEATURE_AP_SCAN;
-	hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
-	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
-	hw->wiphy->max_ap_assoc_sta = HIF_LINK_ID_MAX;
-	hw->wiphy->max_scan_ssids = 2;
-	hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
-	hw->wiphy->n_iface_combinations = ARRAY_SIZE(wfx_iface_combinations);
-	hw->wiphy->iface_combinations = wfx_iface_combinations;
-	hw->wiphy->bands[NL80211_BAND_2GHZ] = devm_kmalloc(dev, sizeof(wfx_band_2ghz), GFP_KERNEL);
-	// FIXME: also copy wfx_rates and wfx_2ghz_chantable
-	memcpy(hw->wiphy->bands[NL80211_BAND_2GHZ], &wfx_band_2ghz,
-	       sizeof(wfx_band_2ghz));
-
-	wdev = hw->priv;
-	wdev->hw = hw;
-	wdev->dev = dev;
-	wdev->hwbus_ops = hwbus_ops;
-	wdev->hwbus_priv = hwbus_priv;
-	memcpy(&wdev->pdata, pdata, sizeof(*pdata));
-	of_property_read_string(dev->of_node, "config-file",
-				&wdev->pdata.file_pds);
-	wdev->pdata.gpio_wakeup = devm_gpiod_get_optional(dev, "wakeup",
-							  GPIOD_OUT_LOW);
-	if (IS_ERR(wdev->pdata.gpio_wakeup))
-		return NULL;
-	if (wdev->pdata.gpio_wakeup)
-		gpiod_set_consumer_name(wdev->pdata.gpio_wakeup, "wfx wakeup");
-
-	mutex_init(&wdev->conf_mutex);
-	mutex_init(&wdev->rx_stats_lock);
-	mutex_init(&wdev->tx_power_loop_info_lock);
-	init_completion(&wdev->firmware_ready);
-	INIT_DELAYED_WORK(&wdev->cooling_timeout_work,
-			  wfx_cooling_timeout_work);
-	skb_queue_head_init(&wdev->tx_pending);
-	init_waitqueue_head(&wdev->tx_dequeue);
-	wfx_init_hif_cmd(&wdev->hif_cmd);
-	wdev->force_ps_timeout = -1;
-
-	if (devm_add_action_or_reset(dev, wfx_free_common, wdev))
-		return NULL;
-
-	return wdev;
-}
-
-int wfx_probe(struct wfx_dev *wdev)
-{
-	int i;
-	int err;
-	const void *macaddr;
-	struct gpio_desc *gpio_saved;
-
-	// During first part of boot, gpio_wakeup cannot yet been used. So
-	// prevent bh() to touch it.
-	gpio_saved = wdev->pdata.gpio_wakeup;
-	wdev->pdata.gpio_wakeup = NULL;
-	wdev->poll_irq = true;
-
-	wfx_bh_register(wdev);
-
-	err = wfx_init_device(wdev);
-	if (err)
-		goto err0;
-
-	wfx_bh_poll_irq(wdev);
-	err = wait_for_completion_timeout(&wdev->firmware_ready, 1 * HZ);
-	if (err <= 0) {
-		if (err == 0) {
-			dev_err(wdev->dev, "timeout while waiting for startup indication\n");
-			err = -ETIMEDOUT;
-		} else if (err == -ERESTARTSYS) {
-			dev_info(wdev->dev, "probe interrupted by user\n");
-		}
-		goto err0;
-	}
-
-	// FIXME: fill wiphy::hw_version
-	dev_info(wdev->dev, "started firmware %d.%d.%d \"%s\" (API: %d.%d, keyset: %02X, caps: 0x%.8X)\n",
-		 wdev->hw_caps.firmware_major, wdev->hw_caps.firmware_minor,
-		 wdev->hw_caps.firmware_build, wdev->hw_caps.firmware_label,
-		 wdev->hw_caps.api_version_major, wdev->hw_caps.api_version_minor,
-		 wdev->keyset, wdev->hw_caps.link_mode);
-	snprintf(wdev->hw->wiphy->fw_version,
-		 sizeof(wdev->hw->wiphy->fw_version),
-		 "%d.%d.%d",
-		 wdev->hw_caps.firmware_major,
-		 wdev->hw_caps.firmware_minor,
-		 wdev->hw_caps.firmware_build);
-
-	if (wfx_api_older_than(wdev, 1, 0)) {
-		dev_err(wdev->dev,
-			"unsupported firmware API version (expect 1 while firmware returns %d)\n",
-			wdev->hw_caps.api_version_major);
-		err = -ENOTSUPP;
-		goto err0;
-	}
-
-	if (wdev->hw_caps.link_mode == SEC_LINK_ENFORCED) {
-		dev_err(wdev->dev,
-			"chip require secure_link, but can't negotiate it\n");
-		goto err0;
-	}
-
-	if (wdev->hw_caps.region_sel_mode) {
-		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[11].flags |= IEEE80211_CHAN_NO_IR;
-		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[12].flags |= IEEE80211_CHAN_NO_IR;
-		wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->channels[13].flags |= IEEE80211_CHAN_DISABLED;
-	}
-
-	dev_dbg(wdev->dev, "sending configuration file %s\n",
-		wdev->pdata.file_pds);
-	err = wfx_send_pdata_pds(wdev);
-	if (err < 0)
-		goto err0;
-
-	wdev->poll_irq = false;
-	err = wdev->hwbus_ops->irq_subscribe(wdev->hwbus_priv);
-	if (err)
-		goto err0;
-
-	err = hif_use_multi_tx_conf(wdev, true);
-	if (err)
-		dev_err(wdev->dev, "misconfigured IRQ?\n");
-
-	wdev->pdata.gpio_wakeup = gpio_saved;
-	if (wdev->pdata.gpio_wakeup) {
-		dev_dbg(wdev->dev,
-			"enable 'quiescent' power mode with wakeup GPIO and PDS file %s\n",
-			wdev->pdata.file_pds);
-		gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);
-		control_reg_write(wdev, 0);
-		hif_set_operational_mode(wdev, HIF_OP_POWER_MODE_QUIESCENT);
-	} else {
-		hif_set_operational_mode(wdev, HIF_OP_POWER_MODE_DOZE);
-	}
-
-	for (i = 0; i < ARRAY_SIZE(wdev->addresses); i++) {
-		eth_zero_addr(wdev->addresses[i].addr);
-		macaddr = of_get_mac_address(wdev->dev->of_node);
-		if (!IS_ERR_OR_NULL(macaddr)) {
-			ether_addr_copy(wdev->addresses[i].addr, macaddr);
-			wdev->addresses[i].addr[ETH_ALEN - 1] += i;
-		} else {
-			ether_addr_copy(wdev->addresses[i].addr,
-					wdev->hw_caps.mac_addr[i]);
-		}
-		if (!is_valid_ether_addr(wdev->addresses[i].addr)) {
-			dev_warn(wdev->dev, "using random MAC address\n");
-			eth_random_addr(wdev->addresses[i].addr);
-		}
-		dev_info(wdev->dev, "MAC address %d: %pM\n", i,
-			 wdev->addresses[i].addr);
-	}
-	wdev->hw->wiphy->n_addresses = ARRAY_SIZE(wdev->addresses);
-	wdev->hw->wiphy->addresses = wdev->addresses;
-
-	err = ieee80211_register_hw(wdev->hw);
-	if (err)
-		goto err1;
-
-	err = wfx_debug_init(wdev);
-	if (err)
-		goto err2;
-
-	return 0;
-
-err2:
-	ieee80211_unregister_hw(wdev->hw);
-err1:
-	wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv);
-err0:
-	wfx_bh_unregister(wdev);
-	return err;
-}
-
-void wfx_release(struct wfx_dev *wdev)
-{
-	ieee80211_unregister_hw(wdev->hw);
-	hif_shutdown(wdev);
-	wdev->hwbus_ops->irq_unsubscribe(wdev->hwbus_priv);
-	wfx_bh_unregister(wdev);
-}
-
-static int __init wfx_core_init(void)
-{
-	int ret = 0;
-
-	if (IS_ENABLED(CONFIG_SPI))
-		ret = spi_register_driver(&wfx_spi_driver);
-	if (IS_ENABLED(CONFIG_MMC) && !ret)
-		ret = sdio_register_driver(&wfx_sdio_driver);
-	return ret;
-}
-module_init(wfx_core_init);
-
-static void __exit wfx_core_exit(void)
-{
-	if (IS_ENABLED(CONFIG_MMC))
-		sdio_unregister_driver(&wfx_sdio_driver);
-	if (IS_ENABLED(CONFIG_SPI))
-		spi_unregister_driver(&wfx_spi_driver);
-}
-module_exit(wfx_core_exit);
diff --git a/drivers/staging/wfx/main.h b/drivers/staging/wfx/main.h
deleted file mode 100644
index a0db322383a3..000000000000
--- a/drivers/staging/wfx/main.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Device probe and register.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
- * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
- */
-#ifndef WFX_MAIN_H
-#define WFX_MAIN_H
-
-#include <linux/device.h>
-#include <linux/gpio/consumer.h>
-
-#include "hif_api_general.h"
-
-struct wfx_dev;
-struct hwbus_ops;
-
-struct wfx_platform_data {
-	/* Keyset and ".sec" extension will be appended to this string */
-	const char *file_fw;
-	const char *file_pds;
-	struct gpio_desc *gpio_wakeup;
-	/*
-	 * if true HIF D_out is sampled on the rising edge of the clock
-	 * (intended to be used in 50Mhz SDIO)
-	 */
-	bool use_rising_clk;
-};
-
-struct wfx_dev *wfx_init_common(struct device *dev,
-				const struct wfx_platform_data *pdata,
-				const struct hwbus_ops *hwbus_ops,
-				void *hwbus_priv);
-
-int wfx_probe(struct wfx_dev *wdev);
-void wfx_release(struct wfx_dev *wdev);
-
-bool wfx_api_older_than(struct wfx_dev *wdev, int major, int minor);
-int wfx_send_pds(struct wfx_dev *wdev, u8 *buf, size_t len);
-
-#endif
diff --git a/drivers/staging/wfx/queue.c b/drivers/staging/wfx/queue.c
deleted file mode 100644
index 31c37f69c295..000000000000
--- a/drivers/staging/wfx/queue.c
+++ /dev/null
@@ -1,304 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * O(1) TX queue with built-in allocator.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/sched.h>
-#include <net/mac80211.h>
-
-#include "queue.h"
-#include "wfx.h"
-#include "sta.h"
-#include "data_tx.h"
-#include "traces.h"
-
-void wfx_tx_lock(struct wfx_dev *wdev)
-{
-	atomic_inc(&wdev->tx_lock);
-}
-
-void wfx_tx_unlock(struct wfx_dev *wdev)
-{
-	int tx_lock = atomic_dec_return(&wdev->tx_lock);
-
-	WARN(tx_lock < 0, "inconsistent tx_lock value");
-	if (!tx_lock)
-		wfx_bh_request_tx(wdev);
-}
-
-void wfx_tx_flush(struct wfx_dev *wdev)
-{
-	int ret;
-
-	// Do not wait for any reply if chip is frozen
-	if (wdev->chip_frozen)
-		return;
-
-	wfx_tx_lock(wdev);
-	mutex_lock(&wdev->hif_cmd.lock);
-	ret = wait_event_timeout(wdev->hif.tx_buffers_empty,
-				 !wdev->hif.tx_buffers_used,
-				 msecs_to_jiffies(3000));
-	if (!ret) {
-		dev_warn(wdev->dev, "cannot flush tx buffers (%d still busy)\n",
-			 wdev->hif.tx_buffers_used);
-		wfx_pending_dump_old_frames(wdev, 3000);
-		// FIXME: drop pending frames here
-		wdev->chip_frozen = true;
-	}
-	mutex_unlock(&wdev->hif_cmd.lock);
-	wfx_tx_unlock(wdev);
-}
-
-void wfx_tx_lock_flush(struct wfx_dev *wdev)
-{
-	wfx_tx_lock(wdev);
-	wfx_tx_flush(wdev);
-}
-
-void wfx_tx_queues_init(struct wfx_vif *wvif)
-{
-	// The device is in charge to respect the details of the QoS parameters.
-	// The driver just ensure that it roughtly respect the priorities to
-	// avoid any shortage.
-	const int priorities[IEEE80211_NUM_ACS] = { 1, 2, 64, 128 };
-	int i;
-
-	for (i = 0; i < IEEE80211_NUM_ACS; ++i) {
-		skb_queue_head_init(&wvif->tx_queue[i].normal);
-		skb_queue_head_init(&wvif->tx_queue[i].cab);
-		wvif->tx_queue[i].priority = priorities[i];
-	}
-}
-
-void wfx_tx_queues_check_empty(struct wfx_vif *wvif)
-{
-	int i;
-
-	for (i = 0; i < IEEE80211_NUM_ACS; ++i) {
-		WARN_ON(atomic_read(&wvif->tx_queue[i].pending_frames));
-		WARN_ON(!skb_queue_empty_lockless(&wvif->tx_queue[i].normal));
-		WARN_ON(!skb_queue_empty_lockless(&wvif->tx_queue[i].cab));
-	}
-}
-
-bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue)
-{
-	return skb_queue_empty(&queue->normal) && skb_queue_empty(&queue->cab);
-}
-
-static void __wfx_tx_queue_drop(struct wfx_vif *wvif,
-				struct sk_buff_head *skb_queue,
-				struct sk_buff_head *dropped)
-{
-	struct sk_buff *skb, *tmp;
-
-	spin_lock_bh(&skb_queue->lock);
-	skb_queue_walk_safe(skb_queue, skb, tmp) {
-		__skb_unlink(skb, skb_queue);
-		skb_queue_head(dropped, skb);
-	}
-	spin_unlock_bh(&skb_queue->lock);
-}
-
-void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue,
-		       struct sk_buff_head *dropped)
-{
-	__wfx_tx_queue_drop(wvif, &queue->cab, dropped);
-	__wfx_tx_queue_drop(wvif, &queue->normal, dropped);
-	wake_up(&wvif->wdev->tx_dequeue);
-}
-
-void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb)
-{
-	struct wfx_queue *queue = &wvif->tx_queue[skb_get_queue_mapping(skb)];
-	struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
-
-	if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
-		skb_queue_tail(&queue->cab, skb);
-	else
-		skb_queue_tail(&queue->normal, skb);
-}
-
-void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped)
-{
-	struct wfx_queue *queue;
-	struct wfx_vif *wvif;
-	struct hif_msg *hif;
-	struct sk_buff *skb;
-
-	WARN(!wdev->chip_frozen, "%s should only be used to recover a frozen device",
-	     __func__);
-	while ((skb = skb_dequeue(&wdev->tx_pending)) != NULL) {
-		hif = (struct hif_msg *)skb->data;
-		wvif = wdev_to_wvif(wdev, hif->interface);
-		if (wvif) {
-			queue = &wvif->tx_queue[skb_get_queue_mapping(skb)];
-			WARN_ON(skb_get_queue_mapping(skb) > 3);
-			WARN_ON(!atomic_read(&queue->pending_frames));
-			atomic_dec(&queue->pending_frames);
-		}
-		skb_queue_head(dropped, skb);
-	}
-}
-
-struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id)
-{
-	struct wfx_queue *queue;
-	struct hif_req_tx *req;
-	struct wfx_vif *wvif;
-	struct hif_msg *hif;
-	struct sk_buff *skb;
-
-	spin_lock_bh(&wdev->tx_pending.lock);
-	skb_queue_walk(&wdev->tx_pending, skb) {
-		hif = (struct hif_msg *)skb->data;
-		req = (struct hif_req_tx *)hif->body;
-		if (req->packet_id != packet_id)
-			continue;
-		spin_unlock_bh(&wdev->tx_pending.lock);
-		wvif = wdev_to_wvif(wdev, hif->interface);
-		if (wvif) {
-			queue = &wvif->tx_queue[skb_get_queue_mapping(skb)];
-			WARN_ON(skb_get_queue_mapping(skb) > 3);
-			WARN_ON(!atomic_read(&queue->pending_frames));
-			atomic_dec(&queue->pending_frames);
-		}
-		skb_unlink(skb, &wdev->tx_pending);
-		return skb;
-	}
-	spin_unlock_bh(&wdev->tx_pending.lock);
-	WARN(1, "cannot find packet in pending queue");
-	return NULL;
-}
-
-void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms)
-{
-	ktime_t now = ktime_get();
-	struct wfx_tx_priv *tx_priv;
-	struct hif_req_tx *req;
-	struct sk_buff *skb;
-	bool first = true;
-
-	spin_lock_bh(&wdev->tx_pending.lock);
-	skb_queue_walk(&wdev->tx_pending, skb) {
-		tx_priv = wfx_skb_tx_priv(skb);
-		req = wfx_skb_txreq(skb);
-		if (ktime_after(now, ktime_add_ms(tx_priv->xmit_timestamp,
-						  limit_ms))) {
-			if (first) {
-				dev_info(wdev->dev, "frames stuck in firmware since %dms or more:\n",
-					 limit_ms);
-				first = false;
-			}
-			dev_info(wdev->dev, "   id %08x sent %lldms ago\n",
-				 req->packet_id,
-				 ktime_ms_delta(now, tx_priv->xmit_timestamp));
-		}
-	}
-	spin_unlock_bh(&wdev->tx_pending.lock);
-}
-
-unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev,
-					  struct sk_buff *skb)
-{
-	ktime_t now = ktime_get();
-	struct wfx_tx_priv *tx_priv = wfx_skb_tx_priv(skb);
-
-	return ktime_us_delta(now, tx_priv->xmit_timestamp);
-}
-
-bool wfx_tx_queues_has_cab(struct wfx_vif *wvif)
-{
-	int i;
-
-	if (wvif->vif->type != NL80211_IFTYPE_AP)
-		return false;
-	for (i = 0; i < IEEE80211_NUM_ACS; ++i)
-		// Note: since only AP can have mcast frames in queue and only
-		// one vif can be AP, all queued frames has same interface id
-		if (!skb_queue_empty_lockless(&wvif->tx_queue[i].cab))
-			return true;
-	return false;
-}
-
-static int wfx_tx_queue_get_weight(struct wfx_queue *queue)
-{
-	return atomic_read(&queue->pending_frames) * queue->priority;
-}
-
-static struct sk_buff *wfx_tx_queues_get_skb(struct wfx_dev *wdev)
-{
-	struct wfx_queue *queues[IEEE80211_NUM_ACS * ARRAY_SIZE(wdev->vif)];
-	int i, j, num_queues = 0;
-	struct wfx_vif *wvif;
-	struct hif_msg *hif;
-	struct sk_buff *skb;
-
-	// sort the queues
-	wvif = NULL;
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-		for (i = 0; i < IEEE80211_NUM_ACS; i++) {
-			WARN_ON(num_queues >= ARRAY_SIZE(queues));
-			queues[num_queues] = &wvif->tx_queue[i];
-			for (j = num_queues; j > 0; j--)
-				if (wfx_tx_queue_get_weight(queues[j]) <
-				    wfx_tx_queue_get_weight(queues[j - 1]))
-					swap(queues[j - 1], queues[j]);
-			num_queues++;
-		}
-	}
-
-	wvif = NULL;
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-		if (!wvif->after_dtim_tx_allowed)
-			continue;
-		for (i = 0; i < num_queues; i++) {
-			skb = skb_dequeue(&queues[i]->cab);
-			if (!skb)
-				continue;
-			// Note: since only AP can have mcast frames in queue
-			// and only one vif can be AP, all queued frames has
-			// same interface id
-			hif = (struct hif_msg *)skb->data;
-			WARN_ON(hif->interface != wvif->id);
-			WARN_ON(queues[i] !=
-				&wvif->tx_queue[skb_get_queue_mapping(skb)]);
-			atomic_inc(&queues[i]->pending_frames);
-			trace_queues_stats(wdev, queues[i]);
-			return skb;
-		}
-		// No more multicast to sent
-		wvif->after_dtim_tx_allowed = false;
-		schedule_work(&wvif->update_tim_work);
-	}
-
-	for (i = 0; i < num_queues; i++) {
-		skb = skb_dequeue(&queues[i]->normal);
-		if (skb) {
-			atomic_inc(&queues[i]->pending_frames);
-			trace_queues_stats(wdev, queues[i]);
-			return skb;
-		}
-	}
-	return NULL;
-}
-
-struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev)
-{
-	struct wfx_tx_priv *tx_priv;
-	struct sk_buff *skb;
-
-	if (atomic_read(&wdev->tx_lock))
-		return NULL;
-	skb = wfx_tx_queues_get_skb(wdev);
-	if (!skb)
-		return NULL;
-	skb_queue_tail(&wdev->tx_pending, skb);
-	wake_up(&wdev->tx_dequeue);
-	tx_priv = wfx_skb_tx_priv(skb);
-	tx_priv->xmit_timestamp = ktime_get();
-	return (struct hif_msg *)skb->data;
-}
diff --git a/drivers/staging/wfx/queue.h b/drivers/staging/wfx/queue.h
deleted file mode 100644
index 80ba19455ef3..000000000000
--- a/drivers/staging/wfx/queue.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * O(1) TX queue with built-in allocator.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_QUEUE_H
-#define WFX_QUEUE_H
-
-#include <linux/skbuff.h>
-#include <linux/atomic.h>
-
-struct wfx_dev;
-struct wfx_vif;
-
-struct wfx_queue {
-	struct sk_buff_head	normal;
-	struct sk_buff_head	cab; // Content After (DTIM) Beacon
-	atomic_t		pending_frames;
-	int			priority;
-};
-
-void wfx_tx_lock(struct wfx_dev *wdev);
-void wfx_tx_unlock(struct wfx_dev *wdev);
-void wfx_tx_flush(struct wfx_dev *wdev);
-void wfx_tx_lock_flush(struct wfx_dev *wdev);
-
-void wfx_tx_queues_init(struct wfx_vif *wvif);
-void wfx_tx_queues_check_empty(struct wfx_vif *wvif);
-bool wfx_tx_queues_has_cab(struct wfx_vif *wvif);
-void wfx_tx_queues_put(struct wfx_vif *wvif, struct sk_buff *skb);
-struct hif_msg *wfx_tx_queues_get(struct wfx_dev *wdev);
-
-bool wfx_tx_queue_empty(struct wfx_vif *wvif, struct wfx_queue *queue);
-void wfx_tx_queue_drop(struct wfx_vif *wvif, struct wfx_queue *queue,
-		       struct sk_buff_head *dropped);
-
-struct sk_buff *wfx_pending_get(struct wfx_dev *wdev, u32 packet_id);
-void wfx_pending_drop(struct wfx_dev *wdev, struct sk_buff_head *dropped);
-unsigned int wfx_pending_get_pkt_us_delay(struct wfx_dev *wdev,
-					  struct sk_buff *skb);
-void wfx_pending_dump_old_frames(struct wfx_dev *wdev, unsigned int limit_ms);
-
-#endif /* WFX_QUEUE_H */
diff --git a/drivers/staging/wfx/scan.c b/drivers/staging/wfx/scan.c
deleted file mode 100644
index fb47c7cddf2f..000000000000
--- a/drivers/staging/wfx/scan.c
+++ /dev/null
@@ -1,132 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Scan related functions.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <net/mac80211.h>
-
-#include "scan.h"
-#include "wfx.h"
-#include "sta.h"
-#include "hif_tx_mib.h"
-
-static void __ieee80211_scan_completed_compat(struct ieee80211_hw *hw,
-					      bool aborted)
-{
-	struct cfg80211_scan_info info = {
-		.aborted = aborted,
-	};
-
-	ieee80211_scan_completed(hw, &info);
-}
-
-static int update_probe_tmpl(struct wfx_vif *wvif,
-			     struct cfg80211_scan_request *req)
-{
-	struct sk_buff *skb;
-
-	skb = ieee80211_probereq_get(wvif->wdev->hw, wvif->vif->addr,
-				     NULL, 0, req->ie_len);
-	if (!skb)
-		return -ENOMEM;
-
-	skb_put_data(skb, req->ie, req->ie_len);
-	hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBREQ, 0);
-	dev_kfree_skb(skb);
-	return 0;
-}
-
-static int send_scan_req(struct wfx_vif *wvif,
-			 struct cfg80211_scan_request *req, int start_idx)
-{
-	int i, ret, timeout;
-	struct ieee80211_channel *ch_start, *ch_cur;
-
-	for (i = start_idx; i < req->n_channels; i++) {
-		ch_start = req->channels[start_idx];
-		ch_cur = req->channels[i];
-		WARN(ch_cur->band != NL80211_BAND_2GHZ, "band not supported");
-		if (ch_cur->max_power != ch_start->max_power)
-			break;
-		if ((ch_cur->flags ^ ch_start->flags) & IEEE80211_CHAN_NO_IR)
-			break;
-	}
-	wfx_tx_lock_flush(wvif->wdev);
-	wvif->scan_abort = false;
-	reinit_completion(&wvif->scan_complete);
-	ret = hif_scan(wvif, req, start_idx, i - start_idx, &timeout);
-	if (ret) {
-		wfx_tx_unlock(wvif->wdev);
-		return -EIO;
-	}
-	ret = wait_for_completion_timeout(&wvif->scan_complete, timeout);
-	if (req->channels[start_idx]->max_power != wvif->vif->bss_conf.txpower)
-		hif_set_output_power(wvif, wvif->vif->bss_conf.txpower);
-	wfx_tx_unlock(wvif->wdev);
-	if (!ret) {
-		dev_notice(wvif->wdev->dev, "scan timeout\n");
-		hif_stop_scan(wvif);
-		return -ETIMEDOUT;
-	}
-	if (wvif->scan_abort) {
-		dev_notice(wvif->wdev->dev, "scan abort\n");
-		return -ECONNABORTED;
-	}
-	return i - start_idx;
-}
-
-/*
- * It is not really necessary to run scan request asynchronously. However,
- * there is a bug in "iw scan" when ieee80211_scan_completed() is called before
- * wfx_hw_scan() return
- */
-void wfx_hw_scan_work(struct work_struct *work)
-{
-	struct wfx_vif *wvif = container_of(work, struct wfx_vif, scan_work);
-	struct ieee80211_scan_request *hw_req = wvif->scan_req;
-	int chan_cur, ret;
-
-	mutex_lock(&wvif->wdev->conf_mutex);
-	mutex_lock(&wvif->scan_lock);
-	if (wvif->join_in_progress) {
-		dev_info(wvif->wdev->dev, "%s: abort in-progress REQ_JOIN",
-			 __func__);
-		wfx_reset(wvif);
-	}
-	update_probe_tmpl(wvif, &hw_req->req);
-	chan_cur = 0;
-	do {
-		ret = send_scan_req(wvif, &hw_req->req, chan_cur);
-		if (ret > 0)
-			chan_cur += ret;
-	} while (ret > 0 && chan_cur < hw_req->req.n_channels);
-	mutex_unlock(&wvif->scan_lock);
-	mutex_unlock(&wvif->wdev->conf_mutex);
-	__ieee80211_scan_completed_compat(wvif->wdev->hw, ret < 0);
-}
-
-int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		struct ieee80211_scan_request *hw_req)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	WARN_ON(hw_req->req.n_channels > HIF_API_MAX_NB_CHANNELS);
-	wvif->scan_req = hw_req;
-	schedule_work(&wvif->scan_work);
-	return 0;
-}
-
-void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	wvif->scan_abort = true;
-	hif_stop_scan(wvif);
-}
-
-void wfx_scan_complete(struct wfx_vif *wvif)
-{
-	complete(&wvif->scan_complete);
-}
diff --git a/drivers/staging/wfx/scan.h b/drivers/staging/wfx/scan.h
deleted file mode 100644
index c7496a766478..000000000000
--- a/drivers/staging/wfx/scan.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Scan related functions.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_SCAN_H
-#define WFX_SCAN_H
-
-#include <net/mac80211.h>
-
-struct wfx_dev;
-struct wfx_vif;
-
-void wfx_hw_scan_work(struct work_struct *work);
-int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		struct ieee80211_scan_request *req);
-void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
-void wfx_scan_complete(struct wfx_vif *wvif);
-
-#endif /* WFX_SCAN_H */
diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
deleted file mode 100644
index 2320a81eae0b..000000000000
--- a/drivers/staging/wfx/sta.c
+++ /dev/null
@@ -1,807 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Implementation of mac80211 API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/etherdevice.h>
-#include <net/mac80211.h>
-
-#include "sta.h"
-#include "wfx.h"
-#include "fwio.h"
-#include "bh.h"
-#include "key.h"
-#include "scan.h"
-#include "debug.h"
-#include "hif_tx.h"
-#include "hif_tx_mib.h"
-
-#define HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES 2
-
-u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates)
-{
-	int i;
-	u32 ret = 0;
-	// WFx only support 2GHz
-	struct ieee80211_supported_band *sband = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
-
-	for (i = 0; i < sband->n_bitrates; i++) {
-		if (rates & BIT(i)) {
-			if (i >= sband->n_bitrates)
-				dev_warn(wdev->dev, "unsupported basic rate\n");
-			else
-				ret |= BIT(sband->bitrates[i].hw_value);
-		}
-	}
-	return ret;
-}
-
-void wfx_cooling_timeout_work(struct work_struct *work)
-{
-	struct wfx_dev *wdev = container_of(to_delayed_work(work),
-					    struct wfx_dev,
-					    cooling_timeout_work);
-
-	wdev->chip_frozen = true;
-	wfx_tx_unlock(wdev);
-}
-
-void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd)
-{
-	if (cmd == STA_NOTIFY_AWAKE) {
-		// Device recover normal temperature
-		if (cancel_delayed_work(&wdev->cooling_timeout_work))
-			wfx_tx_unlock(wdev);
-	} else {
-		// Device is too hot
-		schedule_delayed_work(&wdev->cooling_timeout_work, 10 * HZ);
-		wfx_tx_lock(wdev);
-	}
-}
-
-static void wfx_filter_beacon(struct wfx_vif *wvif, bool filter_beacon)
-{
-	const struct hif_ie_table_entry filter_ies[] = {
-		{
-			.ie_id        = WLAN_EID_VENDOR_SPECIFIC,
-			.has_changed  = 1,
-			.no_longer    = 1,
-			.has_appeared = 1,
-			.oui          = { 0x50, 0x6F, 0x9A },
-		}, {
-			.ie_id        = WLAN_EID_HT_OPERATION,
-			.has_changed  = 1,
-			.no_longer    = 1,
-			.has_appeared = 1,
-		}, {
-			.ie_id        = WLAN_EID_ERP_INFO,
-			.has_changed  = 1,
-			.no_longer    = 1,
-			.has_appeared = 1,
-		}
-	};
-
-	if (!filter_beacon) {
-		hif_beacon_filter_control(wvif, 0, 1);
-	} else {
-		hif_set_beacon_filter_table(wvif, 3, filter_ies);
-		hif_beacon_filter_control(wvif, HIF_BEACON_FILTER_ENABLE, 0);
-	}
-}
-
-void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
-			  unsigned int *total_flags, u64 unused)
-{
-	struct wfx_vif *wvif = NULL;
-	struct wfx_dev *wdev = hw->priv;
-	bool filter_bssid, filter_prbreq, filter_beacon;
-
-	// Notes:
-	//   - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered
-	//   - PS-Poll (FIF_PSPOLL) are never filtered
-	//   - RTS, CTS and Ack (FIF_CONTROL) are always filtered
-	//   - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered
-	//   - Firmware does (yet) allow to forward unicast traffic sent to
-	//     other stations (aka. promiscuous mode)
-	*total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS |
-			FIF_PROBE_REQ | FIF_PSPOLL;
-
-	mutex_lock(&wdev->conf_mutex);
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-		mutex_lock(&wvif->scan_lock);
-
-		// Note: FIF_BCN_PRBRESP_PROMISC covers probe response and
-		// beacons from other BSS
-		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
-			filter_beacon = false;
-		else
-			filter_beacon = true;
-		wfx_filter_beacon(wvif, filter_beacon);
-
-		if (*total_flags & FIF_OTHER_BSS)
-			filter_bssid = false;
-		else
-			filter_bssid = true;
-
-		// In AP mode, chip can reply to probe request itself
-		if (*total_flags & FIF_PROBE_REQ &&
-		    wvif->vif->type == NL80211_IFTYPE_AP) {
-			dev_dbg(wdev->dev, "do not forward probe request in AP mode\n");
-			*total_flags &= ~FIF_PROBE_REQ;
-		}
-
-		if (*total_flags & FIF_PROBE_REQ)
-			filter_prbreq = false;
-		else
-			filter_prbreq = true;
-		hif_set_rx_filter(wvif, filter_bssid, filter_prbreq);
-
-		mutex_unlock(&wvif->scan_lock);
-	}
-	mutex_unlock(&wdev->conf_mutex);
-}
-
-static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
-{
-	struct ieee80211_channel *chan0 = NULL, *chan1 = NULL;
-	struct ieee80211_conf *conf = &wvif->wdev->hw->conf;
-
-	WARN(!wvif->vif->bss_conf.assoc && enable_ps,
-	     "enable_ps is reliable only if associated");
-	if (wdev_to_wvif(wvif->wdev, 0))
-		chan0 = wdev_to_wvif(wvif->wdev, 0)->vif->bss_conf.chandef.chan;
-	if (wdev_to_wvif(wvif->wdev, 1))
-		chan1 = wdev_to_wvif(wvif->wdev, 1)->vif->bss_conf.chandef.chan;
-	if (chan0 && chan1 && chan0->hw_value != chan1->hw_value &&
-	    wvif->vif->type != NL80211_IFTYPE_AP) {
-		// It is necessary to enable powersave if channels
-		// are different.
-		if (enable_ps)
-			*enable_ps = true;
-		if (wvif->wdev->force_ps_timeout > -1)
-			return wvif->wdev->force_ps_timeout;
-		else if (wfx_api_older_than(wvif->wdev, 3, 2))
-			return 0;
-		else
-			return 30;
-	}
-	if (enable_ps)
-		*enable_ps = wvif->vif->bss_conf.ps;
-	if (wvif->wdev->force_ps_timeout > -1)
-		return wvif->wdev->force_ps_timeout;
-	else if (wvif->vif->bss_conf.assoc && wvif->vif->bss_conf.ps)
-		return conf->dynamic_ps_timeout;
-	else
-		return -1;
-}
-
-int wfx_update_pm(struct wfx_vif *wvif)
-{
-	int ps_timeout;
-	bool ps;
-
-	if (!wvif->vif->bss_conf.assoc)
-		return 0;
-	ps_timeout = wfx_get_ps_timeout(wvif, &ps);
-	if (!ps)
-		ps_timeout = 0;
-	WARN_ON(ps_timeout < 0);
-	if (wvif->uapsd_mask)
-		ps_timeout = 0;
-
-	if (!wait_for_completion_timeout(&wvif->set_pm_mode_complete,
-					 TU_TO_JIFFIES(512)))
-		dev_warn(wvif->wdev->dev,
-			 "timeout while waiting of set_pm_mode_complete\n");
-	return hif_set_pm(wvif, ps, ps_timeout);
-}
-
-int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		   u16 queue, const struct ieee80211_tx_queue_params *params)
-{
-	struct wfx_dev *wdev = hw->priv;
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-	int old_uapsd = wvif->uapsd_mask;
-
-	WARN_ON(queue >= hw->queues);
-
-	mutex_lock(&wdev->conf_mutex);
-	assign_bit(queue, &wvif->uapsd_mask, params->uapsd);
-	hif_set_edca_queue_params(wvif, queue, params);
-	if (wvif->vif->type == NL80211_IFTYPE_STATION &&
-	    old_uapsd != wvif->uapsd_mask) {
-		hif_set_uapsd_info(wvif, wvif->uapsd_mask);
-		wfx_update_pm(wvif);
-	}
-	mutex_unlock(&wdev->conf_mutex);
-	return 0;
-}
-
-int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
-{
-	struct wfx_dev *wdev = hw->priv;
-	struct wfx_vif *wvif = NULL;
-
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
-		hif_rts_threshold(wvif, value);
-	return 0;
-}
-
-/* WSM callbacks */
-
-void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi)
-{
-	/* RSSI: signed Q8.0, RCPI: unsigned Q7.1
-	 * RSSI = RCPI / 2 - 110
-	 */
-	int rcpi_rssi;
-	int cqm_evt;
-
-	rcpi_rssi = raw_rcpi_rssi / 2 - 110;
-	if (rcpi_rssi <= wvif->vif->bss_conf.cqm_rssi_thold)
-		cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
-	else
-		cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
-	ieee80211_cqm_rssi_notify(wvif->vif, cqm_evt, rcpi_rssi, GFP_KERNEL);
-}
-
-static void wfx_beacon_loss_work(struct work_struct *work)
-{
-	struct wfx_vif *wvif = container_of(to_delayed_work(work),
-					    struct wfx_vif, beacon_loss_work);
-	struct ieee80211_bss_conf *bss_conf = &wvif->vif->bss_conf;
-
-	ieee80211_beacon_loss(wvif->vif);
-	schedule_delayed_work(to_delayed_work(work),
-			      msecs_to_jiffies(bss_conf->beacon_int));
-}
-
-void wfx_set_default_unicast_key(struct ieee80211_hw *hw,
-				 struct ieee80211_vif *vif, int idx)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	hif_wep_default_key_id(wvif, idx);
-}
-
-void wfx_reset(struct wfx_vif *wvif)
-{
-	struct wfx_dev *wdev = wvif->wdev;
-
-	wfx_tx_lock_flush(wdev);
-	hif_reset(wvif, false);
-	wfx_tx_policy_init(wvif);
-	if (wvif_count(wdev) <= 1)
-		hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
-	wfx_tx_unlock(wdev);
-	wvif->join_in_progress = false;
-	cancel_delayed_work_sync(&wvif->beacon_loss_work);
-	wvif =  NULL;
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
-		wfx_update_pm(wvif);
-}
-
-int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		struct ieee80211_sta *sta)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
-
-	sta_priv->vif_id = wvif->id;
-
-	if (vif->type == NL80211_IFTYPE_STATION)
-		hif_set_mfp(wvif, sta->mfp, sta->mfp);
-
-	// In station mode, the firmware interprets new link-id as a TDLS peer.
-	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
-		return 0;
-	sta_priv->link_id = ffz(wvif->link_id_map);
-	wvif->link_id_map |= BIT(sta_priv->link_id);
-	WARN_ON(!sta_priv->link_id);
-	WARN_ON(sta_priv->link_id >= HIF_LINK_ID_MAX);
-	hif_map_link(wvif, false, sta->addr, sta_priv->link_id, sta->mfp);
-
-	return 0;
-}
-
-int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		   struct ieee80211_sta *sta)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
-
-	// See note in wfx_sta_add()
-	if (!sta_priv->link_id)
-		return 0;
-	// FIXME add a mutex?
-	hif_map_link(wvif, true, sta->addr, sta_priv->link_id, false);
-	wvif->link_id_map &= ~BIT(sta_priv->link_id);
-	return 0;
-}
-
-static int wfx_upload_ap_templates(struct wfx_vif *wvif)
-{
-	struct sk_buff *skb;
-
-	skb = ieee80211_beacon_get(wvif->wdev->hw, wvif->vif);
-	if (!skb)
-		return -ENOMEM;
-	hif_set_template_frame(wvif, skb, HIF_TMPLT_BCN,
-			       API_RATE_INDEX_B_1MBPS);
-	dev_kfree_skb(skb);
-
-	skb = ieee80211_proberesp_get(wvif->wdev->hw, wvif->vif);
-	if (!skb)
-		return -ENOMEM;
-	hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBRES,
-			       API_RATE_INDEX_B_1MBPS);
-	dev_kfree_skb(skb);
-	return 0;
-}
-
-static void wfx_set_mfp_ap(struct wfx_vif *wvif)
-{
-	struct sk_buff *skb = ieee80211_beacon_get(wvif->wdev->hw, wvif->vif);
-	const int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
-	const u16 *ptr = (u16 *)cfg80211_find_ie(WLAN_EID_RSN,
-						 skb->data + ieoffset,
-						 skb->len - ieoffset);
-	const int pairwise_cipher_suite_count_offset = 8 / sizeof(u16);
-	const int pairwise_cipher_suite_size = 4 / sizeof(u16);
-	const int akm_suite_size = 4 / sizeof(u16);
-
-	if (ptr) {
-		ptr += pairwise_cipher_suite_count_offset;
-		if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
-			return;
-		ptr += 1 + pairwise_cipher_suite_size * *ptr;
-		if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
-			return;
-		ptr += 1 + akm_suite_size * *ptr;
-		if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
-			return;
-		hif_set_mfp(wvif, *ptr & BIT(7), *ptr & BIT(6));
-	}
-}
-
-int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-	struct wfx_dev *wdev = wvif->wdev;
-	int ret;
-
-	wvif =  NULL;
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
-		wfx_update_pm(wvif);
-	wvif = (struct wfx_vif *)vif->drv_priv;
-	wfx_upload_ap_templates(wvif);
-	ret = hif_start(wvif, &vif->bss_conf, wvif->channel);
-	if (ret > 0)
-		return -EIO;
-	wfx_set_mfp_ap(wvif);
-	return ret;
-}
-
-void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	wfx_reset(wvif);
-}
-
-static void wfx_join(struct wfx_vif *wvif)
-{
-	int ret;
-	struct ieee80211_bss_conf *conf = &wvif->vif->bss_conf;
-	struct cfg80211_bss *bss = NULL;
-	u8 ssid[IEEE80211_MAX_SSID_LEN];
-	const u8 *ssidie = NULL;
-	int ssidlen = 0;
-
-	wfx_tx_lock_flush(wvif->wdev);
-
-	bss = cfg80211_get_bss(wvif->wdev->hw->wiphy, wvif->channel,
-			       conf->bssid, NULL, 0,
-			       IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
-	if (!bss && !conf->ibss_joined) {
-		wfx_tx_unlock(wvif->wdev);
-		return;
-	}
-
-	rcu_read_lock(); // protect ssidie
-	if (bss)
-		ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
-	if (ssidie) {
-		ssidlen = ssidie[1];
-		if (ssidlen > IEEE80211_MAX_SSID_LEN)
-			ssidlen = IEEE80211_MAX_SSID_LEN;
-		memcpy(ssid, &ssidie[2], ssidlen);
-	}
-	rcu_read_unlock();
-
-	cfg80211_put_bss(wvif->wdev->hw->wiphy, bss);
-
-	wvif->join_in_progress = true;
-	ret = hif_join(wvif, conf, wvif->channel, ssid, ssidlen);
-	if (ret) {
-		ieee80211_connection_loss(wvif->vif);
-		wfx_reset(wvif);
-	} else {
-		/* Due to beacon filtering it is possible that the
-		 * AP's beacon is not known for the mac80211 stack.
-		 * Disable filtering temporary to make sure the stack
-		 * receives at least one
-		 */
-		wfx_filter_beacon(wvif, false);
-	}
-	wfx_tx_unlock(wvif->wdev);
-}
-
-static void wfx_join_finalize(struct wfx_vif *wvif,
-			      struct ieee80211_bss_conf *info)
-{
-	struct ieee80211_sta *sta = NULL;
-	int ampdu_density = 0;
-	bool greenfield = false;
-
-	rcu_read_lock(); // protect sta
-	if (info->bssid && !info->ibss_joined)
-		sta = ieee80211_find_sta(wvif->vif, info->bssid);
-	if (sta && sta->ht_cap.ht_supported)
-		ampdu_density = sta->ht_cap.ampdu_density;
-	if (sta && sta->ht_cap.ht_supported &&
-	    !(info->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT))
-		greenfield = !!(sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD);
-	rcu_read_unlock();
-
-	wvif->join_in_progress = false;
-	hif_set_association_mode(wvif, ampdu_density, greenfield,
-				 info->use_short_preamble);
-	hif_keep_alive_period(wvif, 0);
-	// beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use
-	// the same value.
-	hif_set_bss_params(wvif, info->aid, 7);
-	hif_set_beacon_wakeup_period(wvif, 1, 1);
-	wfx_update_pm(wvif);
-}
-
-int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	wfx_upload_ap_templates(wvif);
-	wfx_join(wvif);
-	return 0;
-}
-
-void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	wfx_reset(wvif);
-}
-
-static void wfx_enable_beacon(struct wfx_vif *wvif, bool enable)
-{
-	// Driver has Content After DTIM Beacon in queue. Driver is waiting for
-	// a signal from the firmware. Since we are going to stop to send
-	// beacons, this signal will never happens. See also
-	// wfx_suspend_resume_mc()
-	if (!enable && wfx_tx_queues_has_cab(wvif)) {
-		wvif->after_dtim_tx_allowed = true;
-		wfx_bh_request_tx(wvif->wdev);
-	}
-	hif_beacon_transmit(wvif, enable);
-}
-
-void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-			  struct ieee80211_bss_conf *info, u32 changed)
-{
-	struct wfx_dev *wdev = hw->priv;
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-	int i;
-
-	mutex_lock(&wdev->conf_mutex);
-
-	if (changed & BSS_CHANGED_BASIC_RATES ||
-	    changed & BSS_CHANGED_BEACON_INT ||
-	    changed & BSS_CHANGED_BSSID) {
-		if (vif->type == NL80211_IFTYPE_STATION)
-			wfx_join(wvif);
-	}
-
-	if (changed & BSS_CHANGED_ASSOC) {
-		if (info->assoc || info->ibss_joined)
-			wfx_join_finalize(wvif, info);
-		else if (!info->assoc && vif->type == NL80211_IFTYPE_STATION)
-			wfx_reset(wvif);
-		else
-			dev_warn(wdev->dev, "%s: misunderstood change: ASSOC\n",
-				 __func__);
-	}
-
-	if (changed & BSS_CHANGED_BEACON_INFO) {
-		if (vif->type != NL80211_IFTYPE_STATION)
-			dev_warn(wdev->dev, "%s: misunderstood change: BEACON_INFO\n",
-				 __func__);
-		hif_set_beacon_wakeup_period(wvif, info->dtim_period,
-					     info->dtim_period);
-		// We temporary forwarded beacon for join process. It is now no
-		// more necessary.
-		wfx_filter_beacon(wvif, true);
-	}
-
-	if (changed & BSS_CHANGED_ARP_FILTER) {
-		for (i = 0; i < HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES; i++) {
-			__be32 *arp_addr = &info->arp_addr_list[i];
-
-			if (info->arp_addr_cnt > HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES)
-				arp_addr = NULL;
-			if (i >= info->arp_addr_cnt)
-				arp_addr = NULL;
-			hif_set_arp_ipv4_filter(wvif, i, arp_addr);
-		}
-	}
-
-	if (changed & BSS_CHANGED_AP_PROBE_RESP ||
-	    changed & BSS_CHANGED_BEACON)
-		wfx_upload_ap_templates(wvif);
-
-	if (changed & BSS_CHANGED_BEACON_ENABLED)
-		wfx_enable_beacon(wvif, info->enable_beacon);
-
-	if (changed & BSS_CHANGED_KEEP_ALIVE)
-		hif_keep_alive_period(wvif, info->max_idle_period *
-					    USEC_PER_TU / USEC_PER_MSEC);
-
-	if (changed & BSS_CHANGED_ERP_CTS_PROT)
-		hif_erp_use_protection(wvif, info->use_cts_prot);
-
-	if (changed & BSS_CHANGED_ERP_SLOT)
-		hif_slot_time(wvif, info->use_short_slot ? 9 : 20);
-
-	if (changed & BSS_CHANGED_CQM)
-		hif_set_rcpi_rssi_threshold(wvif, info->cqm_rssi_thold,
-					    info->cqm_rssi_hyst);
-
-	if (changed & BSS_CHANGED_TXPOWER)
-		hif_set_output_power(wvif, info->txpower);
-
-	if (changed & BSS_CHANGED_PS)
-		wfx_update_pm(wvif);
-
-	mutex_unlock(&wdev->conf_mutex);
-}
-
-static int wfx_update_tim(struct wfx_vif *wvif)
-{
-	struct sk_buff *skb;
-	u16 tim_offset, tim_length;
-	u8 *tim_ptr;
-
-	skb = ieee80211_beacon_get_tim(wvif->wdev->hw, wvif->vif,
-				       &tim_offset, &tim_length);
-	if (!skb)
-		return -ENOENT;
-	tim_ptr = skb->data + tim_offset;
-
-	if (tim_offset && tim_length >= 6) {
-		/* Ignore DTIM count from mac80211:
-		 * firmware handles DTIM internally.
-		 */
-		tim_ptr[2] = 0;
-
-		/* Set/reset aid0 bit */
-		if (wfx_tx_queues_has_cab(wvif))
-			tim_ptr[4] |= 1;
-		else
-			tim_ptr[4] &= ~1;
-	}
-
-	hif_update_ie_beacon(wvif, tim_ptr, tim_length);
-	dev_kfree_skb(skb);
-
-	return 0;
-}
-
-static void wfx_update_tim_work(struct work_struct *work)
-{
-	struct wfx_vif *wvif = container_of(work, struct wfx_vif, update_tim_work);
-
-	wfx_update_tim(wvif);
-}
-
-int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
-{
-	struct wfx_dev *wdev = hw->priv;
-	struct wfx_sta_priv *sta_dev = (struct wfx_sta_priv *)&sta->drv_priv;
-	struct wfx_vif *wvif = wdev_to_wvif(wdev, sta_dev->vif_id);
-
-	if (!wvif) {
-		dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
-		return -EIO;
-	}
-	schedule_work(&wvif->update_tim_work);
-	return 0;
-}
-
-void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd notify_cmd)
-{
-	if (notify_cmd != STA_NOTIFY_AWAKE)
-		return;
-	WARN(!wfx_tx_queues_has_cab(wvif), "incorrect sequence");
-	WARN(wvif->after_dtim_tx_allowed, "incorrect sequence");
-	wvif->after_dtim_tx_allowed = true;
-	wfx_bh_request_tx(wvif->wdev);
-}
-
-int wfx_ampdu_action(struct ieee80211_hw *hw,
-		     struct ieee80211_vif *vif,
-		     struct ieee80211_ampdu_params *params)
-{
-	// Aggregation is implemented fully in firmware
-	switch (params->action) {
-	case IEEE80211_AMPDU_RX_START:
-	case IEEE80211_AMPDU_RX_STOP:
-		// Just acknowledge it to enable frame re-ordering
-		return 0;
-	default:
-		// Leave the firmware doing its business for tx aggregation
-		return -ENOTSUPP;
-	}
-}
-
-int wfx_add_chanctx(struct ieee80211_hw *hw,
-		    struct ieee80211_chanctx_conf *conf)
-{
-	return 0;
-}
-
-void wfx_remove_chanctx(struct ieee80211_hw *hw,
-			struct ieee80211_chanctx_conf *conf)
-{
-}
-
-void wfx_change_chanctx(struct ieee80211_hw *hw,
-			struct ieee80211_chanctx_conf *conf,
-			u32 changed)
-{
-}
-
-int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-			   struct ieee80211_chanctx_conf *conf)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-	struct ieee80211_channel *ch = conf->def.chan;
-
-	WARN(wvif->channel, "channel overwrite");
-	wvif->channel = ch;
-
-	return 0;
-}
-
-void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw,
-			      struct ieee80211_vif *vif,
-			      struct ieee80211_chanctx_conf *conf)
-{
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-	struct ieee80211_channel *ch = conf->def.chan;
-
-	WARN(wvif->channel != ch, "channel mismatch");
-	wvif->channel = NULL;
-}
-
-int wfx_config(struct ieee80211_hw *hw, u32 changed)
-{
-	return 0;
-}
-
-int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
-	int i, ret = 0;
-	struct wfx_dev *wdev = hw->priv;
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
-			     IEEE80211_VIF_SUPPORTS_UAPSD |
-			     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
-
-	mutex_lock(&wdev->conf_mutex);
-
-	switch (vif->type) {
-	case NL80211_IFTYPE_STATION:
-	case NL80211_IFTYPE_ADHOC:
-	case NL80211_IFTYPE_AP:
-		break;
-	default:
-		mutex_unlock(&wdev->conf_mutex);
-		return -EOPNOTSUPP;
-	}
-
-	// FIXME: prefer use of container_of() to get vif
-	wvif->vif = vif;
-	wvif->wdev = wdev;
-
-	wvif->link_id_map = 1; // link-id 0 is reserved for multicast
-	INIT_WORK(&wvif->update_tim_work, wfx_update_tim_work);
-	INIT_DELAYED_WORK(&wvif->beacon_loss_work, wfx_beacon_loss_work);
-
-	init_completion(&wvif->set_pm_mode_complete);
-	complete(&wvif->set_pm_mode_complete);
-	INIT_WORK(&wvif->tx_policy_upload_work, wfx_tx_policy_upload_work);
-
-	mutex_init(&wvif->scan_lock);
-	init_completion(&wvif->scan_complete);
-	INIT_WORK(&wvif->scan_work, wfx_hw_scan_work);
-
-	wfx_tx_queues_init(wvif);
-	wfx_tx_policy_init(wvif);
-
-	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
-		if (!wdev->vif[i]) {
-			wdev->vif[i] = vif;
-			wvif->id = i;
-			break;
-		}
-	}
-	WARN(i == ARRAY_SIZE(wdev->vif), "try to instantiate more vif than supported");
-
-	hif_set_macaddr(wvif, vif->addr);
-
-	mutex_unlock(&wdev->conf_mutex);
-
-	wvif = NULL;
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-		// Combo mode does not support Block Acks. We can re-enable them
-		if (wvif_count(wdev) == 1)
-			hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
-		else
-			hif_set_block_ack_policy(wvif, 0x00, 0x00);
-	}
-	return ret;
-}
-
-void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
-{
-	struct wfx_dev *wdev = hw->priv;
-	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
-
-	wait_for_completion_timeout(&wvif->set_pm_mode_complete, msecs_to_jiffies(300));
-	wfx_tx_queues_check_empty(wvif);
-
-	mutex_lock(&wdev->conf_mutex);
-	WARN(wvif->link_id_map != 1, "corrupted state");
-
-	hif_reset(wvif, false);
-	hif_set_macaddr(wvif, NULL);
-	wfx_tx_policy_init(wvif);
-
-	cancel_delayed_work_sync(&wvif->beacon_loss_work);
-	wdev->vif[wvif->id] = NULL;
-	wvif->vif = NULL;
-
-	mutex_unlock(&wdev->conf_mutex);
-
-	wvif = NULL;
-	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-		// Combo mode does not support Block Acks. We can re-enable them
-		if (wvif_count(wdev) == 1)
-			hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
-		else
-			hif_set_block_ack_policy(wvif, 0x00, 0x00);
-	}
-}
-
-int wfx_start(struct ieee80211_hw *hw)
-{
-	return 0;
-}
-
-void wfx_stop(struct ieee80211_hw *hw)
-{
-	struct wfx_dev *wdev = hw->priv;
-
-	WARN_ON(!skb_queue_empty_lockless(&wdev->tx_pending));
-}
diff --git a/drivers/staging/wfx/sta.h b/drivers/staging/wfx/sta.h
deleted file mode 100644
index d7b5df5ea4e6..000000000000
--- a/drivers/staging/wfx/sta.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Implementation of mac80211 API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#ifndef WFX_STA_H
-#define WFX_STA_H
-
-#include <net/mac80211.h>
-
-struct wfx_dev;
-struct wfx_vif;
-
-struct wfx_sta_priv {
-	int link_id;
-	int vif_id;
-};
-
-// mac80211 interface
-int wfx_start(struct ieee80211_hw *hw);
-void wfx_stop(struct ieee80211_hw *hw);
-int wfx_config(struct ieee80211_hw *hw, u32 changed);
-int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value);
-void wfx_set_default_unicast_key(struct ieee80211_hw *hw,
-				 struct ieee80211_vif *vif, int idx);
-void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
-			  unsigned int *total_flags, u64 unused);
-
-int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
-void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
-int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
-void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
-int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
-void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
-int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		u16 queue, const struct ieee80211_tx_queue_params *params);
-void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-			  struct ieee80211_bss_conf *info, u32 changed);
-int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		struct ieee80211_sta *sta);
-int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		   struct ieee80211_sta *sta);
-void wfx_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		    enum sta_notify_cmd cmd, struct ieee80211_sta *sta);
-int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set);
-int wfx_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-		     struct ieee80211_ampdu_params *params);
-int wfx_add_chanctx(struct ieee80211_hw *hw,
-		    struct ieee80211_chanctx_conf *conf);
-void wfx_remove_chanctx(struct ieee80211_hw *hw,
-			struct ieee80211_chanctx_conf *conf);
-void wfx_change_chanctx(struct ieee80211_hw *hw,
-			struct ieee80211_chanctx_conf *conf, u32 changed);
-int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
-			   struct ieee80211_chanctx_conf *conf);
-void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw,
-			      struct ieee80211_vif *vif,
-			      struct ieee80211_chanctx_conf *conf);
-
-// WSM Callbacks
-void wfx_cooling_timeout_work(struct work_struct *work);
-void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd);
-void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd cmd);
-void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi);
-int wfx_update_pm(struct wfx_vif *wvif);
-
-// Other Helpers
-void wfx_reset(struct wfx_vif *wvif);
-u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates);
-
-#endif /* WFX_STA_H */
diff --git a/drivers/staging/wfx/traces.h b/drivers/staging/wfx/traces.h
deleted file mode 100644
index e34c7a538c65..000000000000
--- a/drivers/staging/wfx/traces.h
+++ /dev/null
@@ -1,501 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Tracepoints definitions.
- *
- * Copyright (c) 2018-2020, Silicon Laboratories, Inc.
- */
-
-#undef TRACE_SYSTEM
-#define TRACE_SYSTEM wfx
-
-#if !defined(_WFX_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
-#define _WFX_TRACE_H
-
-#include <linux/tracepoint.h>
-#include <net/mac80211.h>
-
-#include "bus.h"
-#include "hif_api_cmd.h"
-#include "hif_api_mib.h"
-
-/* The hell below need some explanations. For each symbolic number, we need to
- * define it with TRACE_DEFINE_ENUM() and in a list for __print_symbolic.
- *
- *   1. Define a new macro that call TRACE_DEFINE_ENUM():
- *
- *          #define xxx_name(sym) TRACE_DEFINE_ENUM(sym);
- *
- *   2. Define list of all symbols:
- *
- *          #define list_names     \
- *             ...                 \
- *             xxx_name(XXX)       \
- *             ...
- *
- *   3. Instantiate that list_names:
- *
- *          list_names
- *
- *   4. Redefine xxx_name() as an entry of array for __print_symbolic()
- *
- *          #undef xxx_name
- *          #define xxx_name(msg) { msg, #msg },
- *
- *   5. list_name can now nearly be used with __print_symbolic() but,
- *      __print_symbolic() dislike last comma of list. So we define a new list
- *      with a dummy element:
- *
- *          #define list_for_print_symbolic list_names { -1, NULL }
- */
-
-#define _hif_msg_list                       \
-	hif_cnf_name(ADD_KEY)               \
-	hif_cnf_name(BEACON_TRANSMIT)       \
-	hif_cnf_name(EDCA_QUEUE_PARAMS)     \
-	hif_cnf_name(JOIN)                  \
-	hif_cnf_name(MAP_LINK)              \
-	hif_cnf_name(READ_MIB)              \
-	hif_cnf_name(REMOVE_KEY)            \
-	hif_cnf_name(RESET)                 \
-	hif_cnf_name(SET_BSS_PARAMS)        \
-	hif_cnf_name(SET_PM_MODE)           \
-	hif_cnf_name(START)                 \
-	hif_cnf_name(START_SCAN)            \
-	hif_cnf_name(STOP_SCAN)             \
-	hif_cnf_name(TX)                    \
-	hif_cnf_name(MULTI_TRANSMIT)        \
-	hif_cnf_name(UPDATE_IE)             \
-	hif_cnf_name(WRITE_MIB)             \
-	hif_cnf_name(CONFIGURATION)         \
-	hif_cnf_name(CONTROL_GPIO)          \
-	hif_cnf_name(PREVENT_ROLLBACK)      \
-	hif_cnf_name(SET_SL_MAC_KEY)        \
-	hif_cnf_name(SL_CONFIGURE)          \
-	hif_cnf_name(SL_EXCHANGE_PUB_KEYS)  \
-	hif_cnf_name(SHUT_DOWN)             \
-	hif_ind_name(EVENT)                 \
-	hif_ind_name(JOIN_COMPLETE)         \
-	hif_ind_name(RX)                    \
-	hif_ind_name(SCAN_CMPL)             \
-	hif_ind_name(SET_PM_MODE_CMPL)      \
-	hif_ind_name(SUSPEND_RESUME_TX)     \
-	hif_ind_name(SL_EXCHANGE_PUB_KEYS)  \
-	hif_ind_name(ERROR)                 \
-	hif_ind_name(EXCEPTION)             \
-	hif_ind_name(GENERIC)               \
-	hif_ind_name(WAKEUP)                \
-	hif_ind_name(STARTUP)
-
-#define hif_msg_list_enum _hif_msg_list
-
-#undef hif_cnf_name
-#undef hif_ind_name
-#define hif_cnf_name(msg) TRACE_DEFINE_ENUM(HIF_CNF_ID_##msg);
-#define hif_ind_name(msg) TRACE_DEFINE_ENUM(HIF_IND_ID_##msg);
-hif_msg_list_enum
-#undef hif_cnf_name
-#undef hif_ind_name
-#define hif_cnf_name(msg) { HIF_CNF_ID_##msg, #msg },
-#define hif_ind_name(msg) { HIF_IND_ID_##msg, #msg },
-#define hif_msg_list hif_msg_list_enum { -1, NULL }
-
-#define _hif_mib_list                                \
-	hif_mib_name(ARP_IP_ADDRESSES_TABLE)         \
-	hif_mib_name(ARP_KEEP_ALIVE_PERIOD)          \
-	hif_mib_name(BEACON_FILTER_ENABLE)           \
-	hif_mib_name(BEACON_FILTER_TABLE)            \
-	hif_mib_name(BEACON_STATS)                   \
-	hif_mib_name(BEACON_WAKEUP_PERIOD)           \
-	hif_mib_name(BLOCK_ACK_POLICY)               \
-	hif_mib_name(CCA_CONFIG)                     \
-	hif_mib_name(CONFIG_DATA_FILTER)             \
-	hif_mib_name(COUNTERS_TABLE)                 \
-	hif_mib_name(CURRENT_TX_POWER_LEVEL)         \
-	hif_mib_name(DOT11_MAC_ADDRESS)              \
-	hif_mib_name(DOT11_MAX_RECEIVE_LIFETIME)     \
-	hif_mib_name(DOT11_MAX_TRANSMIT_MSDU_LIFETIME) \
-	hif_mib_name(DOT11_RTS_THRESHOLD)            \
-	hif_mib_name(DOT11_WEP_DEFAULT_KEY_ID)       \
-	hif_mib_name(ETHERTYPE_DATAFRAME_CONDITION)  \
-	hif_mib_name(EXTENDED_COUNTERS_TABLE)        \
-	hif_mib_name(GL_BLOCK_ACK_INFO)              \
-	hif_mib_name(GL_OPERATIONAL_POWER_MODE)      \
-	hif_mib_name(GL_SET_MULTI_MSG)               \
-	hif_mib_name(GRP_SEQ_COUNTER)                \
-	hif_mib_name(INACTIVITY_TIMER)               \
-	hif_mib_name(INTERFACE_PROTECTION)           \
-	hif_mib_name(IPV4_ADDR_DATAFRAME_CONDITION)  \
-	hif_mib_name(IPV6_ADDR_DATAFRAME_CONDITION)  \
-	hif_mib_name(KEEP_ALIVE_PERIOD)              \
-	hif_mib_name(MAC_ADDR_DATAFRAME_CONDITION)   \
-	hif_mib_name(MAGIC_DATAFRAME_CONDITION)      \
-	hif_mib_name(MAX_TX_POWER_LEVEL)             \
-	hif_mib_name(NON_ERP_PROTECTION)             \
-	hif_mib_name(NS_IP_ADDRESSES_TABLE)          \
-	hif_mib_name(OVERRIDE_INTERNAL_TX_RATE)      \
-	hif_mib_name(PORT_DATAFRAME_CONDITION)       \
-	hif_mib_name(PROTECTED_MGMT_POLICY)          \
-	hif_mib_name(RCPI_RSSI_THRESHOLD)            \
-	hif_mib_name(RX_FILTER)                      \
-	hif_mib_name(SET_ASSOCIATION_MODE)           \
-	hif_mib_name(SET_DATA_FILTERING)             \
-	hif_mib_name(SET_HT_PROTECTION)              \
-	hif_mib_name(SET_TX_RATE_RETRY_POLICY)       \
-	hif_mib_name(SET_UAPSD_INFORMATION)          \
-	hif_mib_name(SLOT_TIME)                      \
-	hif_mib_name(STATISTICS_TABLE)               \
-	hif_mib_name(TEMPLATE_FRAME)                 \
-	hif_mib_name(TSF_COUNTER)                    \
-	hif_mib_name(UC_MC_BC_DATAFRAME_CONDITION)
-
-#define hif_mib_list_enum _hif_mib_list
-
-#undef hif_mib_name
-#define hif_mib_name(mib) TRACE_DEFINE_ENUM(HIF_MIB_ID_##mib);
-hif_mib_list_enum
-#undef hif_mib_name
-#define hif_mib_name(mib) { HIF_MIB_ID_##mib, #mib },
-#define hif_mib_list hif_mib_list_enum { -1, NULL }
-
-DECLARE_EVENT_CLASS(hif_data,
-	TP_PROTO(const struct hif_msg *hif, int tx_fill_level, bool is_recv),
-	TP_ARGS(hif, tx_fill_level, is_recv),
-	TP_STRUCT__entry(
-		__field(int, tx_fill_level)
-		__field(int, msg_id)
-		__field(const char *, msg_type)
-		__field(int, msg_len)
-		__field(int, buf_len)
-		__field(int, if_id)
-		__field(int, mib)
-		__array(u8, buf, 128)
-	),
-	TP_fast_assign(
-		int header_len;
-
-		__entry->tx_fill_level = tx_fill_level;
-		__entry->msg_len = le16_to_cpu(hif->len);
-		__entry->msg_id = hif->id;
-		__entry->if_id = hif->interface;
-		if (is_recv)
-			__entry->msg_type = __entry->msg_id & 0x80 ? "IND" : "CNF";
-		else
-			__entry->msg_type = "REQ";
-		if (!is_recv &&
-		    (__entry->msg_id == HIF_REQ_ID_READ_MIB ||
-		     __entry->msg_id == HIF_REQ_ID_WRITE_MIB)) {
-			__entry->mib = le16_to_cpup((__le16 *)hif->body);
-			header_len = 4;
-		} else {
-			__entry->mib = -1;
-			header_len = 0;
-		}
-		__entry->buf_len = min_t(int, __entry->msg_len,
-					 sizeof(__entry->buf))
-				   - sizeof(struct hif_msg) - header_len;
-		memcpy(__entry->buf, hif->body + header_len, __entry->buf_len);
-	),
-	TP_printk("%d:%d:%s_%s%s%s: %s%s (%d bytes)",
-		__entry->tx_fill_level,
-		__entry->if_id,
-		__entry->msg_type,
-		__print_symbolic(__entry->msg_id, hif_msg_list),
-		__entry->mib != -1 ? "/" : "",
-		__entry->mib != -1 ? __print_symbolic(__entry->mib, hif_mib_list) : "",
-		__print_hex(__entry->buf, __entry->buf_len),
-		__entry->msg_len > sizeof(__entry->buf) ? " ..." : "",
-		__entry->msg_len
-	)
-);
-DEFINE_EVENT(hif_data, hif_send,
-	TP_PROTO(const struct hif_msg *hif, int tx_fill_level, bool is_recv),
-	TP_ARGS(hif, tx_fill_level, is_recv));
-#define _trace_hif_send(hif, tx_fill_level)\
-	trace_hif_send(hif, tx_fill_level, false)
-DEFINE_EVENT(hif_data, hif_recv,
-	TP_PROTO(const struct hif_msg *hif, int tx_fill_level, bool is_recv),
-	TP_ARGS(hif, tx_fill_level, is_recv));
-#define _trace_hif_recv(hif, tx_fill_level)\
-	trace_hif_recv(hif, tx_fill_level, true)
-
-#define wfx_reg_list_enum                                 \
-	wfx_reg_name(WFX_REG_CONFIG,       "CONFIG")      \
-	wfx_reg_name(WFX_REG_CONTROL,      "CONTROL")     \
-	wfx_reg_name(WFX_REG_IN_OUT_QUEUE, "QUEUE")       \
-	wfx_reg_name(WFX_REG_AHB_DPORT,    "AHB")         \
-	wfx_reg_name(WFX_REG_BASE_ADDR,    "BASE_ADDR")   \
-	wfx_reg_name(WFX_REG_SRAM_DPORT,   "SRAM")        \
-	wfx_reg_name(WFX_REG_SET_GEN_R_W,  "SET_GEN_R_W") \
-	wfx_reg_name(WFX_REG_FRAME_OUT,    "FRAME_OUT")
-
-#undef wfx_reg_name
-#define wfx_reg_name(sym, name) TRACE_DEFINE_ENUM(sym);
-wfx_reg_list_enum
-#undef wfx_reg_name
-#define wfx_reg_name(sym, name) { sym, name },
-#define wfx_reg_list wfx_reg_list_enum { -1, NULL }
-
-DECLARE_EVENT_CLASS(io_data,
-	TP_PROTO(int reg, int addr, const void *io_buf, size_t len),
-	TP_ARGS(reg, addr, io_buf, len),
-	TP_STRUCT__entry(
-		__field(int, reg)
-		__field(int, addr)
-		__field(int, msg_len)
-		__field(int, buf_len)
-		__array(u8, buf, 32)
-		__array(u8, addr_str, 10)
-	),
-	TP_fast_assign(
-		__entry->reg = reg;
-		__entry->addr = addr;
-		__entry->msg_len = len;
-		__entry->buf_len = min_t(int, sizeof(__entry->buf),
-					 __entry->msg_len);
-		memcpy(__entry->buf, io_buf, __entry->buf_len);
-		if (addr >= 0)
-			snprintf(__entry->addr_str, 10, "/%08x", addr);
-		else
-			__entry->addr_str[0] = 0;
-	),
-	TP_printk("%s%s: %s%s (%d bytes)",
-		__print_symbolic(__entry->reg, wfx_reg_list),
-		__entry->addr_str,
-		__print_hex(__entry->buf, __entry->buf_len),
-		__entry->msg_len > sizeof(__entry->buf) ? " ..." : "",
-		__entry->msg_len
-	)
-);
-DEFINE_EVENT(io_data, io_write,
-	TP_PROTO(int reg, int addr, const void *io_buf, size_t len),
-	TP_ARGS(reg, addr, io_buf, len));
-#define _trace_io_ind_write(reg, addr, io_buf, len)\
-	trace_io_write(reg, addr, io_buf, len)
-#define _trace_io_write(reg, io_buf, len) trace_io_write(reg, -1, io_buf, len)
-DEFINE_EVENT(io_data, io_read,
-	TP_PROTO(int reg, int addr, const void *io_buf, size_t len),
-	TP_ARGS(reg, addr, io_buf, len));
-#define _trace_io_ind_read(reg, addr, io_buf, len)\
-	trace_io_read(reg, addr, io_buf, len)
-#define _trace_io_read(reg, io_buf, len) trace_io_read(reg, -1, io_buf, len)
-
-DECLARE_EVENT_CLASS(io_data32,
-	TP_PROTO(int reg, int addr, u32 val),
-	TP_ARGS(reg, addr, val),
-	TP_STRUCT__entry(
-		__field(int, reg)
-		__field(int, addr)
-		__field(int, val)
-		__array(u8, addr_str, 10)
-	),
-	TP_fast_assign(
-		__entry->reg = reg;
-		__entry->addr = addr;
-		__entry->val = val;
-		if (addr >= 0)
-			snprintf(__entry->addr_str, 10, "/%08x", addr);
-		else
-			__entry->addr_str[0] = 0;
-	),
-	TP_printk("%s%s: %08x",
-		__print_symbolic(__entry->reg, wfx_reg_list),
-		__entry->addr_str,
-		__entry->val
-	)
-);
-DEFINE_EVENT(io_data32, io_write32,
-	TP_PROTO(int reg, int addr, u32 val),
-	TP_ARGS(reg, addr, val));
-#define _trace_io_ind_write32(reg, addr, val) trace_io_write32(reg, addr, val)
-#define _trace_io_write32(reg, val) trace_io_write32(reg, -1, val)
-DEFINE_EVENT(io_data32, io_read32,
-	TP_PROTO(int reg, int addr, u32 val),
-	TP_ARGS(reg, addr, val));
-#define _trace_io_ind_read32(reg, addr, val) trace_io_read32(reg, addr, val)
-#define _trace_io_read32(reg, val) trace_io_read32(reg, -1, val)
-
-DECLARE_EVENT_CLASS(piggyback,
-	TP_PROTO(u32 val, bool ignored),
-	TP_ARGS(val, ignored),
-	TP_STRUCT__entry(
-		__field(int, val)
-		__field(bool, ignored)
-	),
-	TP_fast_assign(
-		__entry->val = val;
-		__entry->ignored = ignored;
-	),
-	TP_printk("CONTROL: %08x%s",
-		__entry->val,
-		__entry->ignored ? " (ignored)" : ""
-	)
-);
-DEFINE_EVENT(piggyback, piggyback,
-	TP_PROTO(u32 val, bool ignored),
-	TP_ARGS(val, ignored));
-#define _trace_piggyback(val, ignored) trace_piggyback(val, ignored)
-
-TRACE_EVENT(bh_stats,
-	TP_PROTO(int ind, int req, int cnf, int busy, bool release),
-	TP_ARGS(ind, req, cnf, busy, release),
-	TP_STRUCT__entry(
-		__field(int, ind)
-		__field(int, req)
-		__field(int, cnf)
-		__field(int, busy)
-		__field(bool, release)
-	),
-	TP_fast_assign(
-		__entry->ind = ind;
-		__entry->req = req;
-		__entry->cnf = cnf;
-		__entry->busy = busy;
-		__entry->release = release;
-	),
-	TP_printk("IND/REQ/CNF:%3d/%3d/%3d, REQ in progress:%3d, WUP: %s",
-		__entry->ind,
-		__entry->req,
-		__entry->cnf,
-		__entry->busy,
-		__entry->release ? "release" : "keep"
-	)
-);
-#define _trace_bh_stats(ind, req, cnf, busy, release)\
-	trace_bh_stats(ind, req, cnf, busy, release)
-
-TRACE_EVENT(tx_stats,
-	TP_PROTO(const struct hif_cnf_tx *tx_cnf, const struct sk_buff *skb,
-		 int delay),
-	TP_ARGS(tx_cnf, skb, delay),
-	TP_STRUCT__entry(
-		__field(int, pkt_id)
-		__field(int, delay_media)
-		__field(int, delay_queue)
-		__field(int, delay_fw)
-		__field(int, ack_failures)
-		__field(int, flags)
-		__array(int, rate, 4)
-		__array(int, tx_count, 4)
-	),
-	TP_fast_assign(
-		// Keep sync with wfx_rates definition in main.c
-		static const int hw_rate[] = { 0, 1, 2, 3, 6, 7, 8, 9,
-					       10, 11, 12, 13 };
-		const struct ieee80211_tx_info *tx_info =
-			(const struct ieee80211_tx_info *)skb->cb;
-		const struct ieee80211_tx_rate *rates = tx_info->driver_rates;
-		int i;
-
-		__entry->pkt_id = tx_cnf->packet_id;
-		__entry->delay_media = le32_to_cpu(tx_cnf->media_delay);
-		__entry->delay_queue = le32_to_cpu(tx_cnf->tx_queue_delay);
-		__entry->delay_fw = delay;
-		__entry->ack_failures = tx_cnf->ack_failures;
-		if (!tx_cnf->status || __entry->ack_failures)
-			__entry->ack_failures += 1;
-
-		for (i = 0; i < IEEE80211_NUM_ACS; i++) {
-			if (rates[0].flags & IEEE80211_TX_RC_MCS)
-				__entry->rate[i] = rates[i].idx;
-			else
-				__entry->rate[i] = hw_rate[rates[i].idx];
-			__entry->tx_count[i] = rates[i].count;
-		}
-		__entry->flags = 0;
-		if (rates[0].flags & IEEE80211_TX_RC_MCS)
-			__entry->flags |= 0x01;
-		if (rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
-			__entry->flags |= 0x02;
-		if (rates[0].flags & IEEE80211_TX_RC_GREEN_FIELD)
-			__entry->flags |= 0x04;
-		if (rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS)
-			__entry->flags |= 0x08;
-		if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
-			__entry->flags |= 0x10;
-		if (tx_cnf->status)
-			__entry->flags |= 0x20;
-		if (tx_cnf->status == HIF_STATUS_TX_FAIL_REQUEUE)
-			__entry->flags |= 0x40;
-	),
-	TP_printk("packet ID: %08x, rate policy: %s %d|%d %d|%d %d|%d %d|%d -> %d attempt, Delays media/queue/total: %4dus/%4dus/%4dus",
-		__entry->pkt_id,
-		__print_flags(__entry->flags, NULL,
-			{ 0x01, "M" }, { 0x02, "S" }, { 0x04, "G" },
-			{ 0x08, "R" }, { 0x10, "D" }, { 0x20, "F" },
-			{ 0x40, "Q" }),
-		__entry->rate[0],
-		__entry->tx_count[0],
-		__entry->rate[1],
-		__entry->tx_count[1],
-		__entry->rate[2],
-		__entry->tx_count[2],
-		__entry->rate[3],
-		__entry->tx_count[3],
-		__entry->ack_failures,
-		__entry->delay_media,
-		__entry->delay_queue,
-		__entry->delay_fw
-	)
-);
-#define _trace_tx_stats(tx_cnf, skb, delay) trace_tx_stats(tx_cnf, skb, delay)
-
-TRACE_EVENT(queues_stats,
-	TP_PROTO(struct wfx_dev *wdev, const struct wfx_queue *elected_queue),
-	TP_ARGS(wdev, elected_queue),
-	TP_STRUCT__entry(
-		__field(int, vif_id)
-		__field(int, queue_id)
-		__array(int, hw, IEEE80211_NUM_ACS * 2)
-		__array(int, drv, IEEE80211_NUM_ACS * 2)
-		__array(int, cab, IEEE80211_NUM_ACS * 2)
-	),
-	TP_fast_assign(
-		const struct wfx_queue *queue;
-		struct wfx_vif *wvif;
-		int i, j;
-
-		for (j = 0; j < IEEE80211_NUM_ACS * 2; j++) {
-			__entry->hw[j] = -1;
-			__entry->drv[j] = -1;
-			__entry->cab[j] = -1;
-		}
-		__entry->vif_id = -1;
-		__entry->queue_id = -1;
-		wvif = NULL;
-		while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-			for (i = 0; i < IEEE80211_NUM_ACS; i++) {
-				j = wvif->id * IEEE80211_NUM_ACS + i;
-				WARN_ON(j >= IEEE80211_NUM_ACS * 2);
-				queue = &wvif->tx_queue[i];
-				__entry->hw[j] = atomic_read(&queue->pending_frames);
-				__entry->drv[j] = skb_queue_len(&queue->normal);
-				__entry->cab[j] = skb_queue_len(&queue->cab);
-				if (queue == elected_queue) {
-					__entry->vif_id = wvif->id;
-					__entry->queue_id = i;
-				}
-			}
-		}
-	),
-	TP_printk("got skb from %d/%d, pend. hw/norm/cab: [ %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d ] [ %d/%d/%d %d/%d/%d %d/%d/%d %d/%d/%d ]",
-		__entry->vif_id, __entry->queue_id,
-		__entry->hw[0], __entry->drv[0], __entry->cab[0],
-		__entry->hw[1], __entry->drv[1], __entry->cab[1],
-		__entry->hw[2], __entry->drv[2], __entry->cab[2],
-		__entry->hw[3], __entry->drv[3], __entry->cab[3],
-		__entry->hw[4], __entry->drv[4], __entry->cab[4],
-		__entry->hw[5], __entry->drv[5], __entry->cab[5],
-		__entry->hw[6], __entry->drv[6], __entry->cab[6],
-		__entry->hw[7], __entry->drv[7], __entry->cab[7]
-	)
-);
-
-#endif
-
-/* This part must be outside protection */
-#undef TRACE_INCLUDE_PATH
-#define TRACE_INCLUDE_PATH .
-#undef TRACE_INCLUDE_FILE
-#define TRACE_INCLUDE_FILE traces
-
-#include <trace/define_trace.h>
diff --git a/drivers/staging/wfx/wfx.h b/drivers/staging/wfx/wfx.h
deleted file mode 100644
index 94898680ccde..000000000000
--- a/drivers/staging/wfx/wfx.h
+++ /dev/null
@@ -1,166 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Common private data for Silicon Labs WFx chips.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
- * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
- */
-#ifndef WFX_H
-#define WFX_H
-
-#include <linux/completion.h>
-#include <linux/workqueue.h>
-#include <linux/mutex.h>
-#include <linux/nospec.h>
-#include <net/mac80211.h>
-
-#include "bh.h"
-#include "data_tx.h"
-#include "main.h"
-#include "queue.h"
-#include "hif_tx.h"
-
-#define USEC_PER_TXOP 32 // see struct ieee80211_tx_queue_params
-#define USEC_PER_TU 1024
-
-struct hwbus_ops;
-
-struct wfx_dev {
-	struct wfx_platform_data pdata;
-	struct device		*dev;
-	struct ieee80211_hw	*hw;
-	struct ieee80211_vif	*vif[2];
-	struct mac_address	addresses[2];
-	const struct hwbus_ops	*hwbus_ops;
-	void			*hwbus_priv;
-
-	u8			keyset;
-	struct completion	firmware_ready;
-	struct hif_ind_startup	hw_caps;
-	struct wfx_hif		hif;
-	struct delayed_work	cooling_timeout_work;
-	bool			poll_irq;
-	bool			chip_frozen;
-	struct mutex		conf_mutex;
-
-	struct wfx_hif_cmd	hif_cmd;
-	struct sk_buff_head	tx_pending;
-	wait_queue_head_t	tx_dequeue;
-	atomic_t		tx_lock;
-
-	atomic_t		packet_id;
-	u32			key_map;
-
-	struct hif_rx_stats	rx_stats;
-	struct mutex		rx_stats_lock;
-	struct hif_tx_power_loop_info tx_power_loop_info;
-	struct mutex		tx_power_loop_info_lock;
-	int			force_ps_timeout;
-};
-
-struct wfx_vif {
-	struct wfx_dev		*wdev;
-	struct ieee80211_vif	*vif;
-	struct ieee80211_channel *channel;
-	int			id;
-
-	u32			link_id_map;
-
-	bool			after_dtim_tx_allowed;
-	bool			join_in_progress;
-
-	struct delayed_work	beacon_loss_work;
-
-	struct wfx_queue	tx_queue[4];
-	struct tx_policy_cache	tx_policy_cache;
-	struct work_struct	tx_policy_upload_work;
-
-	struct work_struct	update_tim_work;
-
-	unsigned long		uapsd_mask;
-
-	/* avoid some operations in parallel with scan */
-	struct mutex		scan_lock;
-	struct work_struct	scan_work;
-	struct completion	scan_complete;
-	bool			scan_abort;
-	struct ieee80211_scan_request *scan_req;
-
-	struct completion	set_pm_mode_complete;
-};
-
-static inline struct wfx_vif *wdev_to_wvif(struct wfx_dev *wdev, int vif_id)
-{
-	if (vif_id >= ARRAY_SIZE(wdev->vif)) {
-		dev_dbg(wdev->dev, "requesting non-existent vif: %d\n", vif_id);
-		return NULL;
-	}
-	vif_id = array_index_nospec(vif_id, ARRAY_SIZE(wdev->vif));
-	if (!wdev->vif[vif_id]) {
-		dev_dbg(wdev->dev, "requesting non-allocated vif: %d\n",
-			vif_id);
-		return NULL;
-	}
-	return (struct wfx_vif *) wdev->vif[vif_id]->drv_priv;
-}
-
-static inline struct wfx_vif *wvif_iterate(struct wfx_dev *wdev,
-					   struct wfx_vif *cur)
-{
-	int i;
-	int mark = 0;
-	struct wfx_vif *tmp;
-
-	if (!cur)
-		mark = 1;
-	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
-		tmp = wdev_to_wvif(wdev, i);
-		if (mark && tmp)
-			return tmp;
-		if (tmp == cur)
-			mark = 1;
-	}
-	return NULL;
-}
-
-static inline int wvif_count(struct wfx_dev *wdev)
-{
-	int i;
-	int ret = 0;
-	struct wfx_vif *wvif;
-
-	for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
-		wvif = wdev_to_wvif(wdev, i);
-		if (wvif)
-			ret++;
-	}
-	return ret;
-}
-
-static inline void memreverse(u8 *src, u8 length)
-{
-	u8 *lo = src;
-	u8 *hi = src + length - 1;
-	u8 swap;
-
-	while (lo < hi) {
-		swap = *lo;
-		*lo++ = *hi;
-		*hi-- = swap;
-	}
-}
-
-static inline int memzcmp(void *src, unsigned int size)
-{
-	u8 *buf = src;
-
-	if (!size)
-		return 0;
-	if (*buf)
-		return 1;
-	return memcmp(buf, buf + 1, size - 1);
-}
-
-#endif /* WFX_H */
-- 
2.28.0

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  parent reply index

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-12 10:46 [PATCH 00/23] wfx: get out " Jerome Pouiller
2020-10-12 10:46 ` [PATCH 01/23] dt-bindings: introduce silabs,wfx.yaml Jerome Pouiller
2020-10-13 16:49   ` Rob Herring
2020-10-14 13:49     ` Jérôme Pouiller
2020-11-02 15:58       ` Kalle Valo
2020-10-12 10:46 ` [PATCH 02/23] wfx: add Makefile/Kconfig Jerome Pouiller
2020-10-12 10:46 ` [PATCH 03/23] wfx: add wfx.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 04/23] wfx: add main.c/main.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 05/23] wfx: add bus.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 06/23] wfx: add bus_spi.c Jerome Pouiller
2020-10-12 10:46 ` [PATCH 07/23] wfx: add bus_sdio.c Jerome Pouiller
2020-10-13 20:11   ` Pali Rohár
2020-10-14 11:52     ` Jérôme Pouiller
2020-10-14 12:43       ` Pali Rohár
2020-10-15 14:03         ` Jérôme Pouiller
2020-10-16 11:54           ` Ulf Hansson
2020-11-02 16:02             ` Kalle Valo
2020-10-16 11:30   ` Ulf Hansson
2020-10-16 12:16     ` Jérôme Pouiller
2020-10-12 10:46 ` [PATCH 08/23] wfx: add hwio.c/hwio.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 09/23] wfx: add fwio.c/fwio.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 10/23] wfx: add bh.c/bh.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 11/23] wfx: add hif_api_*.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 12/23] wfx: add hif_tx*.c/hif_tx*.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 13/23] wfx: add key.c/key.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 14/23] wfx: add hif_rx.c/hif_rx.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 15/23] wfx: add data_rx.c/data_rx.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 16/23] wfx: add queue.c/queue.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 17/23] wfx: add data_tx.c/data_tx.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 18/23] wfx: add sta.c/sta.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 19/23] wfx: add scan.c/scan.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 20/23] wfx: add debug.c/debug.h Jerome Pouiller
2020-10-12 10:46 ` [PATCH 21/23] wfx: add traces.h Jerome Pouiller
2020-10-12 10:46 ` Jerome Pouiller [this message]
2020-10-12 10:46 ` [PATCH 23/23] wfx: get out from the staging area Jerome Pouiller

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