[media] airspy: move out of staging into drivers/media/usb

Move it out of staging into media like all the other SDR drivers
too. There is no good reasons to keep these SDR drivers in staging.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

5 files changed, 0 insertions, 1126 deletions

diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
index 8abda145e597..a326d5d95ca8 100644
--- a/drivers/staging/media/Kconfig
+++ b/drivers/staging/media/Kconfig
@@ -19,7 +19,6 @@ menuconfig STAGING_MEDIA
 if STAGING_MEDIA
 
 # Please keep them in alphabetic order
-source "drivers/staging/media/airspy/Kconfig"
 source "drivers/staging/media/as102/Kconfig"
 
 source "drivers/staging/media/bcm2048/Kconfig"
diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile
index 74a9d5a57bc2..e1e053a357cc 100644
--- a/drivers/staging/media/Makefile
+++ b/drivers/staging/media/Makefile
@@ -1,4 +1,3 @@
-obj-$(CONFIG_USB_AIRSPY)	+= airspy/
 obj-$(CONFIG_DVB_AS102)		+= as102/
 obj-$(CONFIG_I2C_BCM2048)	+= bcm2048/
 obj-$(CONFIG_DVB_CXD2099)	+= cxd2099/
diff --git a/drivers/staging/media/airspy/Kconfig b/drivers/staging/media/airspy/Kconfig
deleted file mode 100644
index 59a829b19e79..000000000000
--- a/drivers/staging/media/airspy/Kconfig
+++ /dev/null
@@ -1,5 +0,0 @@
-config USB_AIRSPY
-	tristate "AirSpy"
-	depends on USB && VIDEO_DEV && VIDEO_V4L2 && I2C
-	select VIDEOBUF2_VMALLOC
-	default m if !MEDIA_SUBDRV_AUTOSELECT
diff --git a/drivers/staging/media/airspy/Makefile b/drivers/staging/media/airspy/Makefile
deleted file mode 100644
index 8d8e61c1a349..000000000000
--- a/drivers/staging/media/airspy/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_USB_AIRSPY)              += airspy.o
diff --git a/drivers/staging/media/airspy/airspy.c b/drivers/staging/media/airspy/airspy.c
deleted file mode 100644
index 255fe6a5b4e7..000000000000
--- a/drivers/staging/media/airspy/airspy.c
+++ /dev/null
@@ -1,1118 +0,0 @@
-/*
- * AirSpy SDR driver
- *
- * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
- *
- *    This program is free software; you can redistribute it and/or modify
- *    it under the terms of the GNU General Public License as published by
- *    the Free Software Foundation; either version 2 of the License, or
- *    (at your option) any later version.
- *
- *    This program is distributed in the hope that it will be useful,
- *    but WITHOUT ANY WARRANTY; without even the implied warranty of
- *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *    GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-event.h>
-#include <media/videobuf2-vmalloc.h>
-
-/* AirSpy USB API commands (from AirSpy Library) */
-enum {
-	CMD_INVALID                       = 0x00,
-	CMD_RECEIVER_MODE                 = 0x01,
-	CMD_SI5351C_WRITE                 = 0x02,
-	CMD_SI5351C_READ                  = 0x03,
-	CMD_R820T_WRITE                   = 0x04,
-	CMD_R820T_READ                    = 0x05,
-	CMD_SPIFLASH_ERASE                = 0x06,
-	CMD_SPIFLASH_WRITE                = 0x07,
-	CMD_SPIFLASH_READ                 = 0x08,
-	CMD_BOARD_ID_READ                 = 0x09,
-	CMD_VERSION_STRING_READ           = 0x0a,
-	CMD_BOARD_PARTID_SERIALNO_READ    = 0x0b,
-	CMD_SET_SAMPLE_RATE               = 0x0c,
-	CMD_SET_FREQ                      = 0x0d,
-	CMD_SET_LNA_GAIN                  = 0x0e,
-	CMD_SET_MIXER_GAIN                = 0x0f,
-	CMD_SET_VGA_GAIN                  = 0x10,
-	CMD_SET_LNA_AGC                   = 0x11,
-	CMD_SET_MIXER_AGC                 = 0x12,
-	CMD_SET_PACKING                   = 0x13,
-};
-
-/*
- *       bEndpointAddress     0x81  EP 1 IN
- *         Transfer Type            Bulk
- *       wMaxPacketSize     0x0200  1x 512 bytes
- */
-#define MAX_BULK_BUFS            (6)
-#define BULK_BUFFER_SIZE         (128 * 512)
-
-static const struct v4l2_frequency_band bands[] = {
-	{
-		.tuner = 0,
-		.type = V4L2_TUNER_ADC,
-		.index = 0,
-		.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
-		.rangelow   = 20000000,
-		.rangehigh  = 20000000,
-	},
-};
-
-static const struct v4l2_frequency_band bands_rf[] = {
-	{
-		.tuner = 1,
-		.type = V4L2_TUNER_RF,
-		.index = 0,
-		.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
-		.rangelow   =   24000000,
-		.rangehigh  = 1750000000,
-	},
-};
-
-/* stream formats */
-struct airspy_format {
-	char	*name;
-	u32	pixelformat;
-};
-
-/* format descriptions for capture and preview */
-static struct airspy_format formats[] = {
-	{
-		.name		= "Real U12LE",
-		.pixelformat	=  V4L2_SDR_FMT_RU12LE,
-	},
-};
-
-static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
-
-/* intermediate buffers with raw data from the USB device */
-struct airspy_frame_buf {
-	struct vb2_buffer vb;   /* common v4l buffer stuff -- must be first */
-	struct list_head list;
-};
-
-struct airspy {
-#define POWER_ON           (1 << 1)
-#define URB_BUF            (1 << 2)
-#define USB_STATE_URB_BUF  (1 << 3)
-	unsigned long flags;
-
-	struct usb_device *udev;
-	struct video_device vdev;
-	struct v4l2_device v4l2_dev;
-
-	/* videobuf2 queue and queued buffers list */
-	struct vb2_queue vb_queue;
-	struct list_head queued_bufs;
-	spinlock_t queued_bufs_lock; /* Protects queued_bufs */
-	unsigned sequence;	     /* Buffer sequence counter */
-	unsigned int vb_full;        /* vb is full and packets dropped */
-
-	/* Note if taking both locks v4l2_lock must always be locked first! */
-	struct mutex v4l2_lock;      /* Protects everything else */
-	struct mutex vb_queue_lock;  /* Protects vb_queue and capt_file */
-
-	struct urb     *urb_list[MAX_BULK_BUFS];
-	int            buf_num;
-	unsigned long  buf_size;
-	u8             *buf_list[MAX_BULK_BUFS];
-	dma_addr_t     dma_addr[MAX_BULK_BUFS];
-	int            urbs_initialized;
-	int            urbs_submitted;
-
-	/* USB control message buffer */
-	#define BUF_SIZE 24
-	u8 buf[BUF_SIZE];
-
-	/* Current configuration */
-	unsigned int f_adc;
-	unsigned int f_rf;
-	u32 pixelformat;
-
-	/* Controls */
-	struct v4l2_ctrl_handler hdl;
-	struct v4l2_ctrl *lna_gain_auto;
-	struct v4l2_ctrl *lna_gain;
-	struct v4l2_ctrl *mixer_gain_auto;
-	struct v4l2_ctrl *mixer_gain;
-	struct v4l2_ctrl *if_gain;
-
-	/* Sample rate calc */
-	unsigned long jiffies_next;
-	unsigned int sample;
-	unsigned int sample_measured;
-};
-
-#define airspy_dbg_usb_control_msg(_udev, _r, _t, _v, _i, _b, _l) { \
-	char *_direction; \
-	if (_t & USB_DIR_IN) \
-		_direction = "<<<"; \
-	else \
-		_direction = ">>>"; \
-	dev_dbg(&_udev->dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x " \
-			"%s %*ph\n",  __func__, _t, _r, _v & 0xff, _v >> 8, \
-			_i & 0xff, _i >> 8, _l & 0xff, _l >> 8, _direction, \
-			_l, _b); \
-}
-
-/* execute firmware command */
-static int airspy_ctrl_msg(struct airspy *s, u8 request, u16 value, u16 index,
-		u8 *data, u16 size)
-{
-	int ret;
-	unsigned int pipe;
-	u8 requesttype;
-
-	switch (request) {
-	case CMD_RECEIVER_MODE:
-	case CMD_SET_FREQ:
-		pipe = usb_sndctrlpipe(s->udev, 0);
-		requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
-		break;
-	case CMD_BOARD_ID_READ:
-	case CMD_VERSION_STRING_READ:
-	case CMD_BOARD_PARTID_SERIALNO_READ:
-	case CMD_SET_LNA_GAIN:
-	case CMD_SET_MIXER_GAIN:
-	case CMD_SET_VGA_GAIN:
-	case CMD_SET_LNA_AGC:
-	case CMD_SET_MIXER_AGC:
-		pipe = usb_rcvctrlpipe(s->udev, 0);
-		requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
-		break;
-	default:
-		dev_err(&s->udev->dev, "Unknown command %02x\n", request);
-		ret = -EINVAL;
-		goto err;
-	}
-
-	/* write request */
-	if (!(requesttype & USB_DIR_IN))
-		memcpy(s->buf, data, size);
-
-	ret = usb_control_msg(s->udev, pipe, request, requesttype, value,
-			index, s->buf, size, 1000);
-	airspy_dbg_usb_control_msg(s->udev, request, requesttype, value,
-			index, s->buf, size);
-	if (ret < 0) {
-		dev_err(&s->udev->dev,
-				"usb_control_msg() failed %d request %02x\n",
-				ret, request);
-		goto err;
-	}
-
-	/* read request */
-	if (requesttype & USB_DIR_IN)
-		memcpy(data, s->buf, size);
-
-	return 0;
-err:
-	return ret;
-}
-
-/* Private functions */
-static struct airspy_frame_buf *airspy_get_next_fill_buf(struct airspy *s)
-{
-	unsigned long flags = 0;
-	struct airspy_frame_buf *buf = NULL;
-
-	spin_lock_irqsave(&s->queued_bufs_lock, flags);
-	if (list_empty(&s->queued_bufs))
-		goto leave;
-
-	buf = list_entry(s->queued_bufs.next,
-			struct airspy_frame_buf, list);
-	list_del(&buf->list);
-leave:
-	spin_unlock_irqrestore(&s->queued_bufs_lock, flags);
-	return buf;
-}
-
-static unsigned int airspy_convert_stream(struct airspy *s,
-		void *dst, void *src, unsigned int src_len)
-{
-	unsigned int dst_len;
-
-	if (s->pixelformat == V4L2_SDR_FMT_RU12LE) {
-		memcpy(dst, src, src_len);
-		dst_len = src_len;
-	} else {
-		dst_len = 0;
-	}
-
-	/* calculate samping rate and output it in 10 seconds intervals */
-	if (unlikely(time_is_before_jiffies(s->jiffies_next))) {
-		#define MSECS 10000UL
-		unsigned int samples = s->sample - s->sample_measured;
-		s->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
-		s->sample_measured = s->sample;
-		dev_dbg(&s->udev->dev,
-				"slen=%d samples=%u msecs=%lu sample rate=%lu\n",
-				src_len, samples, MSECS,
-				samples * 1000UL / MSECS);
-	}
-
-	/* total number of samples */
-	s->sample += src_len / 2;
-
-	return dst_len;
-}
-
-/*
- * This gets called for the bulk stream pipe. This is done in interrupt
- * time, so it has to be fast, not crash, and not stall. Neat.
- */
-static void airspy_urb_complete(struct urb *urb)
-{
-	struct airspy *s = urb->context;
-	struct airspy_frame_buf *fbuf;
-
-	dev_dbg_ratelimited(&s->udev->dev,
-			"%s: status=%d length=%d/%d errors=%d\n",
-			__func__, urb->status, urb->actual_length,
-			urb->transfer_buffer_length, urb->error_count);
-
-	switch (urb->status) {
-	case 0:             /* success */
-	case -ETIMEDOUT:    /* NAK */
-		break;
-	case -ECONNRESET:   /* kill */
-	case -ENOENT:
-	case -ESHUTDOWN:
-		return;
-	default:            /* error */
-		dev_err_ratelimited(&s->udev->dev, "URB failed %d\n",
-				urb->status);
-		break;
-	}
-
-	if (likely(urb->actual_length > 0)) {
-		void *ptr;
-		unsigned int len;
-		/* get free framebuffer */
-		fbuf = airspy_get_next_fill_buf(s);
-		if (unlikely(fbuf == NULL)) {
-			s->vb_full++;
-			dev_notice_ratelimited(&s->udev->dev,
-					"videobuf is full, %d packets dropped\n",
-					s->vb_full);
-			goto skip;
-		}
-
-		/* fill framebuffer */
-		ptr = vb2_plane_vaddr(&fbuf->vb, 0);
-		len = airspy_convert_stream(s, ptr, urb->transfer_buffer,
-				urb->actual_length);
-		vb2_set_plane_payload(&fbuf->vb, 0, len);
-		v4l2_get_timestamp(&fbuf->vb.v4l2_buf.timestamp);
-		fbuf->vb.v4l2_buf.sequence = s->sequence++;
-		vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE);
-	}
-skip:
-	usb_submit_urb(urb, GFP_ATOMIC);
-}
-
-static int airspy_kill_urbs(struct airspy *s)
-{
-	int i;
-
-	for (i = s->urbs_submitted - 1; i >= 0; i--) {
-		dev_dbg(&s->udev->dev, "%s: kill urb=%d\n", __func__, i);
-		/* stop the URB */
-		usb_kill_urb(s->urb_list[i]);
-	}
-	s->urbs_submitted = 0;
-
-	return 0;
-}
-
-static int airspy_submit_urbs(struct airspy *s)
-{
-	int i, ret;
-
-	for (i = 0; i < s->urbs_initialized; i++) {
-		dev_dbg(&s->udev->dev, "%s: submit urb=%d\n", __func__, i);
-		ret = usb_submit_urb(s->urb_list[i], GFP_ATOMIC);
-		if (ret) {
-			dev_err(&s->udev->dev,
-					"Could not submit URB no. %d - get them all back\n",
-					i);
-			airspy_kill_urbs(s);
-			return ret;
-		}
-		s->urbs_submitted++;
-	}
-
-	return 0;
-}
-
-static int airspy_free_stream_bufs(struct airspy *s)
-{
-	if (s->flags & USB_STATE_URB_BUF) {
-		while (s->buf_num) {
-			s->buf_num--;
-			dev_dbg(&s->udev->dev, "%s: free buf=%d\n",
-					__func__, s->buf_num);
-			usb_free_coherent(s->udev, s->buf_size,
-					  s->buf_list[s->buf_num],
-					  s->dma_addr[s->buf_num]);
-		}
-	}
-	s->flags &= ~USB_STATE_URB_BUF;
-
-	return 0;
-}
-
-static int airspy_alloc_stream_bufs(struct airspy *s)
-{
-	s->buf_num = 0;
-	s->buf_size = BULK_BUFFER_SIZE;
-
-	dev_dbg(&s->udev->dev,
-			"%s: all in all I will use %u bytes for streaming\n",
-			__func__,  MAX_BULK_BUFS * BULK_BUFFER_SIZE);
-
-	for (s->buf_num = 0; s->buf_num < MAX_BULK_BUFS; s->buf_num++) {
-		s->buf_list[s->buf_num] = usb_alloc_coherent(s->udev,
-				BULK_BUFFER_SIZE, GFP_ATOMIC,
-				&s->dma_addr[s->buf_num]);
-		if (!s->buf_list[s->buf_num]) {
-			dev_dbg(&s->udev->dev, "%s: alloc buf=%d failed\n",
-					__func__, s->buf_num);
-			airspy_free_stream_bufs(s);
-			return -ENOMEM;
-		}
-
-		dev_dbg(&s->udev->dev, "%s: alloc buf=%d %p (dma %llu)\n",
-				__func__, s->buf_num,
-				s->buf_list[s->buf_num],
-				(long long)s->dma_addr[s->buf_num]);
-		s->flags |= USB_STATE_URB_BUF;
-	}
-
-	return 0;
-}
-
-static int airspy_free_urbs(struct airspy *s)
-{
-	int i;
-
-	airspy_kill_urbs(s);
-
-	for (i = s->urbs_initialized - 1; i >= 0; i--) {
-		if (s->urb_list[i]) {
-			dev_dbg(&s->udev->dev, "%s: free urb=%d\n",
-					__func__, i);
-			/* free the URBs */
-			usb_free_urb(s->urb_list[i]);
-		}
-	}
-	s->urbs_initialized = 0;
-
-	return 0;
-}
-
-static int airspy_alloc_urbs(struct airspy *s)
-{
-	int i, j;
-
-	/* allocate the URBs */
-	for (i = 0; i < MAX_BULK_BUFS; i++) {
-		dev_dbg(&s->udev->dev, "%s: alloc urb=%d\n", __func__, i);
-		s->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
-		if (!s->urb_list[i]) {
-			dev_dbg(&s->udev->dev, "%s: failed\n", __func__);
-			for (j = 0; j < i; j++)
-				usb_free_urb(s->urb_list[j]);
-			return -ENOMEM;
-		}
-		usb_fill_bulk_urb(s->urb_list[i],
-				s->udev,
-				usb_rcvbulkpipe(s->udev, 0x81),
-				s->buf_list[i],
-				BULK_BUFFER_SIZE,
-				airspy_urb_complete, s);
-
-		s->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
-		s->urb_list[i]->transfer_dma = s->dma_addr[i];
-		s->urbs_initialized++;
-	}
-
-	return 0;
-}
-
-/* Must be called with vb_queue_lock hold */
-static void airspy_cleanup_queued_bufs(struct airspy *s)
-{
-	unsigned long flags = 0;
-
-	dev_dbg(&s->udev->dev, "%s:\n", __func__);
-
-	spin_lock_irqsave(&s->queued_bufs_lock, flags);
-	while (!list_empty(&s->queued_bufs)) {
-		struct airspy_frame_buf *buf;
-		buf = list_entry(s->queued_bufs.next,
-				struct airspy_frame_buf, list);
-		list_del(&buf->list);
-		vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
-	}
-	spin_unlock_irqrestore(&s->queued_bufs_lock, flags);
-}
-
-/* The user yanked out the cable... */
-static void airspy_disconnect(struct usb_interface *intf)
-{
-	struct v4l2_device *v = usb_get_intfdata(intf);
-	struct airspy *s = container_of(v, struct airspy, v4l2_dev);
-
-	dev_dbg(&s->udev->dev, "%s:\n", __func__);
-
-	mutex_lock(&s->vb_queue_lock);
-	mutex_lock(&s->v4l2_lock);
-	/* No need to keep the urbs around after disconnection */
-	s->udev = NULL;
-	v4l2_device_disconnect(&s->v4l2_dev);
-	video_unregister_device(&s->vdev);
-	mutex_unlock(&s->v4l2_lock);
-	mutex_unlock(&s->vb_queue_lock);
-
-	v4l2_device_put(&s->v4l2_dev);
-}
-
-/* Videobuf2 operations */
-static int airspy_queue_setup(struct vb2_queue *vq,
-		const struct v4l2_format *fmt, unsigned int *nbuffers,
-		unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[])
-{
-	struct airspy *s = vb2_get_drv_priv(vq);
-
-	dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers);
-
-	/* Need at least 8 buffers */
-	if (vq->num_buffers + *nbuffers < 8)
-		*nbuffers = 8 - vq->num_buffers;
-	*nplanes = 1;
-	sizes[0] = PAGE_ALIGN(BULK_BUFFER_SIZE);
-
-	dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n",
-			__func__, *nbuffers, sizes[0]);
-	return 0;
-}
-
-static void airspy_buf_queue(struct vb2_buffer *vb)
-{
-	struct airspy *s = vb2_get_drv_priv(vb->vb2_queue);
-	struct airspy_frame_buf *buf =
-			container_of(vb, struct airspy_frame_buf, vb);
-	unsigned long flags = 0;
-
-	/* Check the device has not disconnected between prep and queuing */
-	if (unlikely(!s->udev)) {
-		vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
-		return;
-	}
-
-	spin_lock_irqsave(&s->queued_bufs_lock, flags);
-	list_add_tail(&buf->list, &s->queued_bufs);
-	spin_unlock_irqrestore(&s->queued_bufs_lock, flags);
-}
-
-static int airspy_start_streaming(struct vb2_queue *vq, unsigned int count)
-{
-	struct airspy *s = vb2_get_drv_priv(vq);
-	int ret;
-
-	dev_dbg(&s->udev->dev, "%s:\n", __func__);
-
-	if (!s->udev)
-		return -ENODEV;
-
-	mutex_lock(&s->v4l2_lock);
-
-	set_bit(POWER_ON, &s->flags);
-
-	s->sequence = 0;
-
-	ret = airspy_alloc_stream_bufs(s);
-	if (ret)
-		goto err;
-
-	ret = airspy_alloc_urbs(s);
-	if (ret)
-		goto err;
-
-	ret = airspy_submit_urbs(s);
-	if (ret)
-		goto err;
-
-	/* start hardware streaming */
-	ret = airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 1, 0, NULL, 0);
-	if (ret)
-		goto err;
-err:
-	mutex_unlock(&s->v4l2_lock);
-
-	return ret;
-}
-
-static void airspy_stop_streaming(struct vb2_queue *vq)
-{
-	struct airspy *s = vb2_get_drv_priv(vq);
-
-	dev_dbg(&s->udev->dev, "%s:\n", __func__);
-
-	mutex_lock(&s->v4l2_lock);
-
-	/* stop hardware streaming */
-	airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 0, 0, NULL, 0);
-
-	airspy_kill_urbs(s);
-	airspy_free_urbs(s);
-	airspy_free_stream_bufs(s);
-
-	airspy_cleanup_queued_bufs(s);
-
-	clear_bit(POWER_ON, &s->flags);
-
-	mutex_unlock(&s->v4l2_lock);
-}
-
-static struct vb2_ops airspy_vb2_ops = {
-	.queue_setup            = airspy_queue_setup,
-	.buf_queue              = airspy_buf_queue,
-	.start_streaming        = airspy_start_streaming,
-	.stop_streaming         = airspy_stop_streaming,
-	.wait_prepare           = vb2_ops_wait_prepare,
-	.wait_finish            = vb2_ops_wait_finish,
-};
-
-static int airspy_querycap(struct file *file, void *fh,
-		struct v4l2_capability *cap)
-{
-	struct airspy *s = video_drvdata(file);
-
-	dev_dbg(&s->udev->dev, "%s:\n", __func__);
-
-	strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
-	strlcpy(cap->card, s->vdev.name, sizeof(cap->card));
-	usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info));
-	cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
-			V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
-	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
-
-	return 0;
-}
-
-static int airspy_enum_fmt_sdr_cap(struct file *file, void *priv,
-		struct v4l2_fmtdesc *f)
-{
-	struct airspy *s = video_drvdata(file);
-
-	dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, f->index);
-
-	if (f->index >= NUM_FORMATS)
-		return -EINVAL;
-
-	strlcpy(f->description, formats[f->index].name, sizeof(f->description));
-	f->pixelformat = formats[f->index].pixelformat;
-
-	return 0;
-}
-
-static int airspy_g_fmt_sdr_cap(struct file *file, void *priv,
-		struct v4l2_format *f)
-{
-	struct airspy *s = video_drvdata(file);
-
-	dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__,
-			(char *)&s->pixelformat);
-
-	memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
-	f->fmt.sdr.pixelformat = s->pixelformat;
-
-	return 0;
-}
-
-static int airspy_s_fmt_sdr_cap(struct file *file, void *priv,
-		struct v4l2_format *f)
-{
-	struct airspy *s = video_drvdata(file);
-	struct vb2_queue *q = &s->vb_queue;
-	int i;
-
-	dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__,
-			(char *)&f->fmt.sdr.pixelformat);
-
-	if (vb2_is_busy(q))
-		return -EBUSY;
-
-	memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
-	for (i = 0; i < NUM_FORMATS; i++) {
-		if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
-			s->pixelformat = f->fmt.sdr.pixelformat;
-			return 0;
-		}
-	}
-
-	f->fmt.sdr.pixelformat = formats[0].pixelformat;
-	s->pixelformat = formats[0].pixelformat;
-
-	return 0;
-}
-
-static int airspy_try_fmt_sdr_cap(struct file *file, void *priv,
-		struct v4l2_format *f)
-{
-	struct airspy *s = video_drvdata(file);
-	int i;
-
-	dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__,
-			(char *)&f->fmt.sdr.pixelformat);
-
-	memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
-	for (i = 0; i < NUM_FORMATS; i++) {
-		if (formats[i].pixelformat == f->fmt.sdr.pixelformat)
-			return 0;
-	}
-
-	f->fmt.sdr.pixelformat = formats[0].pixelformat;
-
-	return 0;
-}
-
-static int airspy_s_tuner(struct file *file, void *priv,
-		const struct v4l2_tuner *v)
-{
-	struct airspy *s = video_drvdata(file);
-	int ret;
-
-	dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, v->index);
-
-	if (v->index == 0)
-		ret = 0;
-	else if (v->index == 1)
-		ret = 0;
-	else
-		ret = -EINVAL;
-
-	return ret;
-}
-
-static int airspy_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
-{
-	struct airspy *s = video_drvdata(file);
-	int ret;
-
-	dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, v->index);
-
-	if (v->index == 0) {
-		strlcpy(v->name, "AirSpy ADC", sizeof(v->name));
-		v->type = V4L2_TUNER_ADC;
-		v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
-		v->rangelow  = bands[0].rangelow;
-		v->rangehigh = bands[0].rangehigh;
-		ret = 0;
-	} else if (v->index == 1) {
-		strlcpy(v->name, "AirSpy RF", sizeof(v->name));
-		v->type = V4L2_TUNER_RF;
-		v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
-		v->rangelow  = bands_rf[0].rangelow;
-		v->rangehigh = bands_rf[0].rangehigh;
-		ret = 0;
-	} else {
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static int airspy_g_frequency(struct file *file, void *priv,
-		struct v4l2_frequency *f)
-{
-	struct airspy *s = video_drvdata(file);
-	int ret  = 0;
-	dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d\n",
-			__func__, f->tuner, f->type);
-
-	if (f->tuner == 0) {
-		f->type = V4L2_TUNER_ADC;
-		f->frequency = s->f_adc;
-		ret = 0;
-	} else if (f->tuner == 1) {
-		f->type = V4L2_TUNER_RF;
-		f->frequency = s->f_rf;
-	} else {
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static int airspy_s_frequency(struct file *file, void *priv,
-		const struct v4l2_frequency *f)
-{
-	struct airspy *s = video_drvdata(file);
-	int ret;
-	u8 buf[4];
-
-	dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d frequency=%u\n",
-			__func__, f->tuner, f->type, f->frequency);
-
-	if (f->tuner == 0) {
-		s->f_adc = clamp_t(unsigned int, f->frequency,
-				bands[0].rangelow,
-				bands[0].rangehigh);
-		dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n",
-				__func__, s->f_adc);
-		ret = 0;
-	} else if (f->tuner == 1) {
-		s->f_rf = clamp_t(unsigned int, f->frequency,
-				bands_rf[0].rangelow,
-				bands_rf[0].rangehigh);
-		dev_dbg(&s->udev->dev, "%s: RF frequency=%u Hz\n",
-				__func__, s->f_rf);
-		buf[0] = (s->f_rf >>  0) & 0xff;
-		buf[1] = (s->f_rf >>  8) & 0xff;
-		buf[2] = (s->f_rf >> 16) & 0xff;
-		buf[3] = (s->f_rf >> 24) & 0xff;
-		ret = airspy_ctrl_msg(s, CMD_SET_FREQ, 0, 0, buf, 4);
-	} else {
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static int airspy_enum_freq_bands(struct file *file, void *priv,
-		struct v4l2_frequency_band *band)
-{
-	struct airspy *s = video_drvdata(file);
-	int ret;
-	dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d index=%d\n",
-			__func__, band->tuner, band->type, band->index);
-
-	if (band->tuner == 0) {
-		if (band->index >= ARRAY_SIZE(bands)) {
-			ret = -EINVAL;
-		} else {
-			*band = bands[band->index];
-			ret = 0;
-		}
-	} else if (band->tuner == 1) {
-		if (band->index >= ARRAY_SIZE(bands_rf)) {
-			ret = -EINVAL;
-		} else {
-			*band = bands_rf[band->index];
-			ret = 0;
-		}
-	} else {
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static const struct v4l2_ioctl_ops airspy_ioctl_ops = {
-	.vidioc_querycap          = airspy_querycap,
-
-	.vidioc_enum_fmt_sdr_cap  = airspy_enum_fmt_sdr_cap,
-	.vidioc_g_fmt_sdr_cap     = airspy_g_fmt_sdr_cap,
-	.vidioc_s_fmt_sdr_cap     = airspy_s_fmt_sdr_cap,
-	.vidioc_try_fmt_sdr_cap   = airspy_try_fmt_sdr_cap,
-
-	.vidioc_reqbufs           = vb2_ioctl_reqbufs,
-	.vidioc_create_bufs       = vb2_ioctl_create_bufs,
-	.vidioc_prepare_buf       = vb2_ioctl_prepare_buf,
-	.vidioc_querybuf          = vb2_ioctl_querybuf,
-	.vidioc_qbuf              = vb2_ioctl_qbuf,
-	.vidioc_dqbuf             = vb2_ioctl_dqbuf,
-
-	.vidioc_streamon          = vb2_ioctl_streamon,
-	.vidioc_streamoff         = vb2_ioctl_streamoff,
-
-	.vidioc_g_tuner           = airspy_g_tuner,
-	.vidioc_s_tuner           = airspy_s_tuner,
-
-	.vidioc_g_frequency       = airspy_g_frequency,
-	.vidioc_s_frequency       = airspy_s_frequency,
-	.vidioc_enum_freq_bands   = airspy_enum_freq_bands,
-
-	.vidioc_subscribe_event   = v4l2_ctrl_subscribe_event,
-	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-	.vidioc_log_status        = v4l2_ctrl_log_status,
-};
-
-static const struct v4l2_file_operations airspy_fops = {
-	.owner                    = THIS_MODULE,
-	.open                     = v4l2_fh_open,
-	.release                  = vb2_fop_release,
-	.read                     = vb2_fop_read,
-	.poll                     = vb2_fop_poll,
-	.mmap                     = vb2_fop_mmap,
-	.unlocked_ioctl           = video_ioctl2,
-};
-
-static struct video_device airspy_template = {
-	.name                     = "AirSpy SDR",
-	.release                  = video_device_release_empty,
-	.fops                     = &airspy_fops,
-	.ioctl_ops                = &airspy_ioctl_ops,
-};
-
-static void airspy_video_release(struct v4l2_device *v)
-{
-	struct airspy *s = container_of(v, struct airspy, v4l2_dev);
-
-	v4l2_ctrl_handler_free(&s->hdl);
-	v4l2_device_unregister(&s->v4l2_dev);
-	kfree(s);
-}
-
-static int airspy_set_lna_gain(struct airspy *s)
-{
-	int ret;
-	u8 u8tmp;
-
-	dev_dbg(&s->udev->dev, "%s: lna auto=%d->%d val=%d->%d\n",
-			__func__, s->lna_gain_auto->cur.val,
-			s->lna_gain_auto->val, s->lna_gain->cur.val,
-			s->lna_gain->val);
-
-	ret = airspy_ctrl_msg(s, CMD_SET_LNA_AGC, 0, s->lna_gain_auto->val,
-			&u8tmp, 1);
-	if (ret)
-		goto err;
-
-	if (s->lna_gain_auto->val == false) {
-		ret = airspy_ctrl_msg(s, CMD_SET_LNA_GAIN, 0, s->lna_gain->val,
-				&u8tmp, 1);
-		if (ret)
-			goto err;
-	}
-err:
-	if (ret)
-		dev_dbg(&s->udev->dev, "%s: failed=%d\n", __func__, ret);
-
-	return ret;
-}
-
-static int airspy_set_mixer_gain(struct airspy *s)
-{
-	int ret;
-	u8 u8tmp;
-
-	dev_dbg(&s->udev->dev, "%s: mixer auto=%d->%d val=%d->%d\n",
-			__func__, s->mixer_gain_auto->cur.val,
-			s->mixer_gain_auto->val, s->mixer_gain->cur.val,
-			s->mixer_gain->val);
-
-	ret = airspy_ctrl_msg(s, CMD_SET_MIXER_AGC, 0, s->mixer_gain_auto->val,
-			&u8tmp, 1);
-	if (ret)
-		goto err;
-
-	if (s->mixer_gain_auto->val == false) {
-		ret = airspy_ctrl_msg(s, CMD_SET_MIXER_GAIN, 0,
-				s->mixer_gain->val, &u8tmp, 1);
-		if (ret)
-			goto err;
-	}
-err:
-	if (ret)
-		dev_dbg(&s->udev->dev, "%s: failed=%d\n", __func__, ret);
-
-	return ret;
-}
-
-static int airspy_set_if_gain(struct airspy *s)
-{
-	int ret;
-	u8 u8tmp;
-
-	dev_dbg(&s->udev->dev, "%s: val=%d->%d\n",
-			__func__, s->if_gain->cur.val, s->if_gain->val);
-
-	ret = airspy_ctrl_msg(s, CMD_SET_VGA_GAIN, 0, s->if_gain->val,
-			&u8tmp, 1);
-	if (ret)
-		goto err;
-err:
-	if (ret)
-		dev_dbg(&s->udev->dev, "%s: failed=%d\n", __func__, ret);
-
-	return ret;
-}
-
-static int airspy_s_ctrl(struct v4l2_ctrl *ctrl)
-{
-	struct airspy *s = container_of(ctrl->handler, struct airspy, hdl);
-	int ret;
-
-	switch (ctrl->id) {
-	case  V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
-	case  V4L2_CID_RF_TUNER_LNA_GAIN:
-		ret = airspy_set_lna_gain(s);
-		break;
-	case  V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
-	case  V4L2_CID_RF_TUNER_MIXER_GAIN:
-		ret = airspy_set_mixer_gain(s);
-		break;
-	case  V4L2_CID_RF_TUNER_IF_GAIN:
-		ret = airspy_set_if_gain(s);
-		break;
-	default:
-		dev_dbg(&s->udev->dev, "%s: unknown ctrl: id=%d name=%s\n",
-				__func__, ctrl->id, ctrl->name);
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static const struct v4l2_ctrl_ops airspy_ctrl_ops = {
-	.s_ctrl = airspy_s_ctrl,
-};
-
-static int airspy_probe(struct usb_interface *intf,
-		const struct usb_device_id *id)
-{
-	struct usb_device *udev = interface_to_usbdev(intf);
-	struct airspy *s = NULL;
-	int ret;
-	u8 u8tmp, buf[BUF_SIZE];
-
-	s = kzalloc(sizeof(struct airspy), GFP_KERNEL);
-	if (s == NULL) {
-		dev_err(&udev->dev,
-				"Could not allocate memory for airspy state\n");
-		return -ENOMEM;
-	}
-
-	mutex_init(&s->v4l2_lock);
-	mutex_init(&s->vb_queue_lock);
-	spin_lock_init(&s->queued_bufs_lock);
-	INIT_LIST_HEAD(&s->queued_bufs);
-	s->udev = udev;
-	s->f_adc = bands[0].rangelow;
-	s->f_rf = bands_rf[0].rangelow;
-	s->pixelformat = V4L2_SDR_FMT_RU12LE;
-
-	/* Detect device */
-	ret = airspy_ctrl_msg(s, CMD_BOARD_ID_READ, 0, 0, &u8tmp, 1);
-	if (ret == 0)
-		ret = airspy_ctrl_msg(s, CMD_VERSION_STRING_READ, 0, 0,
-				buf, BUF_SIZE);
-	if (ret) {
-		dev_err(&s->udev->dev, "Could not detect board\n");
-		goto err_free_mem;
-	}
-
-	buf[BUF_SIZE - 1] = '\0';
-
-	dev_info(&s->udev->dev, "Board ID: %02x\n", u8tmp);
-	dev_info(&s->udev->dev, "Firmware version: %s\n", buf);
-
-	/* Init videobuf2 queue structure */
-	s->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;
-	s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
-	s->vb_queue.drv_priv = s;
-	s->vb_queue.buf_struct_size = sizeof(struct airspy_frame_buf);
-	s->vb_queue.ops = &airspy_vb2_ops;
-	s->vb_queue.mem_ops = &vb2_vmalloc_memops;
-	s->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	ret = vb2_queue_init(&s->vb_queue);
-	if (ret) {
-		dev_err(&s->udev->dev, "Could not initialize vb2 queue\n");
-		goto err_free_mem;
-	}
-
-	/* Init video_device structure */
-	s->vdev = airspy_template;
-	s->vdev.queue = &s->vb_queue;
-	s->vdev.queue->lock = &s->vb_queue_lock;
-	video_set_drvdata(&s->vdev, s);
-
-	/* Register the v4l2_device structure */
-	s->v4l2_dev.release = airspy_video_release;
-	ret = v4l2_device_register(&intf->dev, &s->v4l2_dev);
-	if (ret) {
-		dev_err(&s->udev->dev,
-				"Failed to register v4l2-device (%d)\n", ret);
-		goto err_free_mem;
-	}
-
-	/* Register controls */
-	v4l2_ctrl_handler_init(&s->hdl, 5);
-	s->lna_gain_auto = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops,
-			V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 0);
-	s->lna_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops,
-			V4L2_CID_RF_TUNER_LNA_GAIN, 0, 14, 1, 8);
-	v4l2_ctrl_auto_cluster(2, &s->lna_gain_auto, 0, false);
-	s->mixer_gain_auto = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops,
-			V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 0);
-	s->mixer_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops,
-			V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 15, 1, 8);
-	v4l2_ctrl_auto_cluster(2, &s->mixer_gain_auto, 0, false);
-	s->if_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops,
-			V4L2_CID_RF_TUNER_IF_GAIN, 0, 15, 1, 0);
-	if (s->hdl.error) {
-		ret = s->hdl.error;
-		dev_err(&s->udev->dev, "Could not initialize controls\n");
-		goto err_free_controls;
-	}
-
-	v4l2_ctrl_handler_setup(&s->hdl);
-
-	s->v4l2_dev.ctrl_handler = &s->hdl;
-	s->vdev.v4l2_dev = &s->v4l2_dev;
-	s->vdev.lock = &s->v4l2_lock;
-
-	ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1);
-	if (ret) {
-		dev_err(&s->udev->dev,
-				"Failed to register as video device (%d)\n",
-				ret);
-		goto err_unregister_v4l2_dev;
-	}
-	dev_info(&s->udev->dev, "Registered as %s\n",
-			video_device_node_name(&s->vdev));
-
-	return 0;
-
-err_free_controls:
-	v4l2_ctrl_handler_free(&s->hdl);
-err_unregister_v4l2_dev:
-	v4l2_device_unregister(&s->v4l2_dev);
-err_free_mem:
-	kfree(s);
-	return ret;
-}
-
-/* USB device ID list */
-static struct usb_device_id airspy_id_table[] = {
-	{ USB_DEVICE(0x1d50, 0x60a1) }, /* AirSpy */
-	{ }
-};
-MODULE_DEVICE_TABLE(usb, airspy_id_table);
-
-/* USB subsystem interface */
-static struct usb_driver airspy_driver = {
-	.name                     = KBUILD_MODNAME,
-	.probe                    = airspy_probe,
-	.disconnect               = airspy_disconnect,
-	.id_table                 = airspy_id_table,
-};
-
-module_usb_driver(airspy_driver);
-
-MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
-MODULE_DESCRIPTION("AirSpy SDR");
-MODULE_LICENSE("GPL");