It was abusing video device API. Use SDR API instead.

Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
 drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c | 387 +++++++++++++----------
 1 file changed, 223 insertions(+), 164 deletions(-)

diff --git a/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c 
b/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c
index 4b8c016..a26125c 100644
--- a/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c
+++ b/drivers/staging/media/rtl2832u_sdr/rtl2832_sdr.c
@@ -20,12 +20,6 @@
  * GNU Radio plugin "gr-kernel" for device usage will be on:
  * http://git.linuxtv.org/anttip/gr-kernel.git
  *
- * TODO:
- * Help is very highly welcome for these + all the others you could imagine:
- * - move controls to V4L2 API
- * - use libv4l2 for stream format conversions
- * - gr-kernel: switch to v4l2_mmap (current read eats a lot of cpu)
- * - SDRSharp support
  */
 
 #include "dvb_frontend.h"
@@ -38,22 +32,75 @@
 #include <media/v4l2-event.h>
 #include <media/videobuf2-vmalloc.h>
 
+#include <linux/jiffies.h>
 #include <linux/math64.h>
 
 /* TODO: These should be moved to V4L2 API */
-#define RTL2832_SDR_CID_SAMPLING_MODE       ((V4L2_CID_USER_BASE | 0xf000) +  
0)
-#define RTL2832_SDR_CID_SAMPLING_RATE       ((V4L2_CID_USER_BASE | 0xf000) +  
1)
-#define RTL2832_SDR_CID_SAMPLING_RESOLUTION ((V4L2_CID_USER_BASE | 0xf000) +  
2)
-#define RTL2832_SDR_CID_TUNER_RF            ((V4L2_CID_USER_BASE | 0xf000) + 
10)
 #define RTL2832_SDR_CID_TUNER_BW            ((V4L2_CID_USER_BASE | 0xf000) + 
11)
-#define RTL2832_SDR_CID_TUNER_IF            ((V4L2_CID_USER_BASE | 0xf000) + 
12)
 #define RTL2832_SDR_CID_TUNER_GAIN          ((V4L2_CID_USER_BASE | 0xf000) + 
13)
 
-#define V4L2_PIX_FMT_SDR_U8     v4l2_fourcc('D', 'U', '0', '8') /* unsigned 
8-bit */
+#define V4L2_PIX_FMT_SDR_U8    v4l2_fourcc('D', 'U', '0', '8')
+#define V4L2_PIX_FMT_SDR_U16LE v4l2_fourcc('D', 'U', '1', '6')
 
 #define MAX_BULK_BUFS            (10)
 #define BULK_BUFFER_SIZE         (128 * 512)
 
+static const struct v4l2_frequency_band bands_adc[] = {
+       {
+               .tuner = 0,
+               .type = V4L2_TUNER_ADC,
+               .index = 0,
+               .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
+               .rangelow   =  300000,
+               .rangehigh  =  300000,
+       },
+       {
+               .tuner = 0,
+               .type = V4L2_TUNER_ADC,
+               .index = 1,
+               .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
+               .rangelow   =  900001,
+               .rangehigh  = 2800000,
+       },
+       {
+               .tuner = 0,
+               .type = V4L2_TUNER_ADC,
+               .index = 2,
+               .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
+               .rangelow   = 3200000,
+               .rangehigh  = 3200000,
+       },
+};
+
+static const struct v4l2_frequency_band bands_fm[] = {
+       {
+               .tuner = 1,
+               .type = V4L2_TUNER_RF,
+               .index = 0,
+               .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
+               .rangelow   =    50000000,
+               .rangehigh  =  2000000000,
+       },
+};
+
+/* stream formats */
+struct rtl2832_sdr_format {
+       char    *name;
+       u32     pixelformat;
+};
+
+static struct rtl2832_sdr_format formats[] = {
+       {
+               .name           = "8-bit unsigned",
+               .pixelformat    = V4L2_PIX_FMT_SDR_U8,
+       }, {
+               .name           = "16-bit unsigned little endian",
+               .pixelformat    = V4L2_PIX_FMT_SDR_U16LE,
+       },
+};
+
+static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
+
 /* intermediate buffers with raw data from the USB device */
 struct rtl2832_sdr_frame_buf {
        struct vb2_buffer vb;   /* common v4l buffer stuff -- must be first */
@@ -96,18 +143,18 @@ struct rtl2832_sdr_state {
        int urbs_initialized;
        int urbs_submitted;
 
+       unsigned int f_adc, f_tuner;
+       u32 pixelformat;
+
        /* Controls */
        struct v4l2_ctrl_handler ctrl_handler;
-       struct v4l2_ctrl *ctrl_sampling_rate;
-       struct v4l2_ctrl *ctrl_tuner_rf;
        struct v4l2_ctrl *ctrl_tuner_bw;
-       struct v4l2_ctrl *ctrl_tuner_if;
        struct v4l2_ctrl *ctrl_tuner_gain;
 
        /* for sample rate calc */
        unsigned int sample;
        unsigned int sample_measured;
-       unsigned long jiffies;
+       unsigned long jiffies_next;
 };
 
 /* write multiple hardware registers */
@@ -292,27 +339,41 @@ leave:
 }
 
 static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_state *s,
-               u8 *dst, const u8 *src, unsigned int src_len)
+               void *dst, const u8 *src, unsigned int src_len)
 {
-       memcpy(dst, src, src_len);
+       unsigned int dst_len;
+
+       if (s->pixelformat == V4L2_PIX_FMT_SDR_U8) {
+               /* native stream, no need to convert */
+               memcpy(dst, src, src_len);
+               dst_len = src_len;
+       } else if (s->pixelformat == V4L2_PIX_FMT_SDR_U16LE) {
+               /* convert u8 to u16 */
+               unsigned int i;
+               u16 *u16dst = dst;
+               for (i = 0; i < src_len; i++)
+                       *u16dst++ = (src[i] << 8) | (src[i] >> 0);
+               dst_len = 2 * src_len;
+       } else {
+               dst_len = 0;
+       }
 
        /* calculate samping rate and output it in 10 seconds intervals */
-       if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) {
-               unsigned long jiffies_now = jiffies;
-               unsigned long msecs = jiffies_to_msecs(jiffies_now) - 
jiffies_to_msecs(s->jiffies);
+       if (unlikely(time_is_before_jiffies(s->jiffies_next))) {
+#define MSECS 10000UL
                unsigned int samples = s->sample - s->sample_measured;
-               s->jiffies = jiffies_now;
+               s->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
                s->sample_measured = s->sample;
                dev_dbg(&s->udev->dev,
                                "slen=%d samples=%u msecs=%lu sampling 
rate=%lu\n",
-                               src_len, samples, msecs,
-                               samples * 1000UL / msecs);
+                               src_len, samples, MSECS,
+                               samples * 1000UL / MSECS);
        }
 
        /* total number of I+Q pairs */
        s->sample += src_len / 2;
 
-       return src_len;
+       return dst_len;
 }
 
 /*
@@ -343,12 +404,12 @@ static void rtl2832_sdr_urb_complete(struct urb *urb)
                break;
        }
 
-       if (urb->actual_length > 0) {
+       if (likely(urb->actual_length > 0)) {
                void *ptr;
                unsigned int len;
                /* get free framebuffer */
                fbuf = rtl2832_sdr_get_next_fill_buf(s);
-               if (fbuf == NULL) {
+               if (unlikely(fbuf == NULL)) {
                        s->vb_full++;
                        dev_notice_ratelimited(&s->udev->dev,
                                        "videobuf is full, %d packets 
dropped\n",
@@ -544,7 +605,7 @@ static int rtl2832_sdr_querycap(struct file *file, void *fh,
        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_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
-                       V4L2_CAP_READWRITE;
+                       V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
        cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
        return 0;
 }
@@ -560,7 +621,8 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
        /* Absolute min and max number of buffers available for mmap() */
        *nbuffers = 32;
        *nplanes = 1;
-       sizes[0] = PAGE_ALIGN(BULK_BUFFER_SIZE * 4); /* 8 * 512 * 4 = 16384 */
+       /* 2 = max 16-bit sample returned */
+       sizes[0] = PAGE_ALIGN(BULK_BUFFER_SIZE * 2);
        dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n",
                        __func__, *nbuffers, sizes[0]);
        return 0;
@@ -609,7 +671,10 @@ static int rtl2832_sdr_set_adc(struct rtl2832_sdr_state *s)
        if (!test_bit(POWER_ON, &s->flags))
                return 0;
 
-       f_sr = s->ctrl_sampling_rate->val64;
+       if (s->f_adc == 0)
+               return 0;
+
+       f_sr = s->f_adc;
 
        ret = rtl2832_sdr_wr_regs(s, 0x13e, "\x00\x00", 2);
        ret = rtl2832_sdr_wr_regs(s, 0x115, "\x00", 1);
@@ -788,17 +853,15 @@ static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_state 
*s)
        struct dvb_frontend *fe = s->fe;
        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 
-       unsigned int f_rf = s->ctrl_tuner_rf->val64;
-
        /*
-        * bandwidth (Hz)
+        * tuner RF (Hz)
         */
-       unsigned int bandwidth = s->ctrl_tuner_bw->val;
+       unsigned int f_rf = s->f_tuner;
 
        /*
-        * intermediate frequency (Hz)
+        * bandwidth (Hz)
         */
-       unsigned int f_if = s->ctrl_tuner_if->val;
+       unsigned int bandwidth = s->ctrl_tuner_bw->val;
 
        /*
         * gain (dB)
@@ -806,8 +869,11 @@ static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_state 
*s)
        int gain = s->ctrl_tuner_gain->val;
 
        dev_dbg(&s->udev->dev,
-                       "%s: f_rf=%u bandwidth=%d f_if=%u gain=%d\n",
-                       __func__, f_rf, bandwidth, f_if, gain);
+                       "%s: f_rf=%u bandwidth=%d gain=%d\n",
+                       __func__, f_rf, bandwidth, gain);
+
+       if (f_rf == 0)
+               return 0;
 
        if (!test_bit(POWER_ON, &s->flags))
                return 0;
@@ -913,123 +979,182 @@ static struct vb2_ops rtl2832_sdr_vb2_ops = {
        .wait_finish            = vb2_ops_wait_finish,
 };
 
-static int rtl2832_sdr_enum_input(struct file *file, void *fh, struct 
v4l2_input *i)
+static int rtl2832_sdr_g_tuner(struct file *file, void *priv,
+               struct v4l2_tuner *v)
 {
-       if (i->index != 0)
+       struct rtl2832_sdr_state *s = video_drvdata(file);
+       dev_dbg(&s->udev->dev, "%s: index=%d type=%d\n",
+                       __func__, v->index, v->type);
+
+       if (v->index == 0) {
+               strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
+               v->type = V4L2_TUNER_ADC;
+               v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
+               v->rangelow =   300000;
+               v->rangehigh = 3200000;
+       } else if (v->index == 1) {
+               strlcpy(v->name, "RF: <unknown>", sizeof(v->name));
+               v->type = V4L2_TUNER_RF;
+               v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
+               v->rangelow =    50000000;
+               v->rangehigh = 2000000000;
+       } else {
                return -EINVAL;
-
-       strlcpy(i->name, "SDR data", sizeof(i->name));
-       i->type = V4L2_INPUT_TYPE_CAMERA;
+       }
 
        return 0;
 }
 
-static int rtl2832_sdr_g_input(struct file *file, void *fh, unsigned int *i)
+static int rtl2832_sdr_s_tuner(struct file *file, void *priv,
+               const struct v4l2_tuner *v)
 {
-       *i = 0;
+       struct rtl2832_sdr_state *s = video_drvdata(file);
+       dev_dbg(&s->udev->dev, "%s:\n", __func__);
 
        return 0;
 }
 
-static int rtl2832_sdr_s_input(struct file *file, void *fh, unsigned int i)
-{
-       return i ? -EINVAL : 0;
-}
-
-static int vidioc_s_tuner(struct file *file, void *priv,
-               const struct v4l2_tuner *v)
+static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv,
+               struct v4l2_frequency_band *band)
 {
        struct rtl2832_sdr_state *s = video_drvdata(file);
-       dev_dbg(&s->udev->dev, "%s:\n", __func__);
+       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_adc))
+                       return -EINVAL;
+
+               *band = bands_adc[band->index];
+       } else if (band->tuner == 1) {
+               if (band->index >= ARRAY_SIZE(bands_fm))
+                       return -EINVAL;
+
+               *band = bands_fm[band->index];
+       } else {
+               return -EINVAL;
+       }
 
        return 0;
 }
 
-static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
+static int rtl2832_sdr_g_frequency(struct file *file, void *priv,
+               struct v4l2_frequency *f)
 {
        struct rtl2832_sdr_state *s = video_drvdata(file);
-       dev_dbg(&s->udev->dev, "%s:\n", __func__);
-
-       strcpy(v->name, "SDR RX");
-       v->capability = V4L2_TUNER_CAP_LOW;
+       int ret  = 0;
+       dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d\n",
+                       __func__, f->tuner, f->type);
+
+       if (f->tuner == 0)
+               f->frequency = s->f_adc;
+       else if (f->tuner == 1)
+               f->frequency = s->f_tuner;
+       else
+               return -EINVAL;
 
-       return 0;
+       return ret;
 }
 
-static int vidioc_s_frequency(struct file *file, void *priv,
+static int rtl2832_sdr_s_frequency(struct file *file, void *priv,
                const struct v4l2_frequency *f)
 {
        struct rtl2832_sdr_state *s = video_drvdata(file);
-       dev_dbg(&s->udev->dev, "%s: frequency=%lu Hz (%u)\n",
-                       __func__, f->frequency * 625UL / 10UL, f->frequency);
+       int ret;
+       dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d frequency=%u\n",
+                       __func__, f->tuner, f->type, f->frequency);
 
-       return v4l2_ctrl_s_ctrl_int64(s->ctrl_tuner_rf,
-                       f->frequency * 625UL / 10UL);
+       if (f->tuner == 0) {
+               s->f_adc = f->frequency;
+               dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n",
+                               __func__, s->f_adc);
+               ret = rtl2832_sdr_set_adc(s);
+       } else if (f->tuner == 1) {
+               s->f_tuner = f->frequency;
+               dev_dbg(&s->udev->dev, "%s: RF frequency=%u Hz\n",
+                               __func__, f->frequency);
+               ret = rtl2832_sdr_set_tuner(s);
+       } else {
+               return -EINVAL;
+       }
+
+       return ret;
 }
 
-static int rtl2832_sdr_enum_fmt_vid_cap(struct file *file, void *priv,
+static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,
                struct v4l2_fmtdesc *f)
 {
        struct rtl2832_sdr_state *s = video_drvdata(file);
        dev_dbg(&s->udev->dev, "%s:\n", __func__);
 
-       if (f->index > 0)
+       if (f->index >= NUM_FORMATS)
                return -EINVAL;
 
-       f->flags = 0;
-       strcpy(f->description, "I/Q 8-bit unsigned");
-       f->pixelformat = V4L2_PIX_FMT_SDR_U8;
+       strlcpy(f->description, formats[f->index].name, sizeof(f->description));
+       f->pixelformat = formats[f->index].pixelformat;
 
        return 0;
 }
 
-static int rtl2832_sdr_g_fmt_vid_cap(struct file *file, void *priv,
+static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv,
                struct v4l2_format *f)
 {
        struct rtl2832_sdr_state *s = video_drvdata(file);
        dev_dbg(&s->udev->dev, "%s:\n", __func__);
 
-       if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+       if (f->type != V4L2_BUF_TYPE_SDR_CAPTURE)
                return -EINVAL;
 
-       memset(&f->fmt.pix, 0, sizeof(f->fmt.pix));
-       f->fmt.pix.pixelformat = V4L2_PIX_FMT_SDR_U8;
+       f->fmt.sdr.pixelformat = s->pixelformat;
 
        return 0;
 }
 
-static int rtl2832_sdr_s_fmt_vid_cap(struct file *file, void *priv,
+static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,
                struct v4l2_format *f)
 {
        struct rtl2832_sdr_state *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.pix.pixelformat);
+                       (char *)&f->fmt.sdr.pixelformat);
 
-       if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+       if (f->type != V4L2_BUF_TYPE_SDR_CAPTURE)
                return -EINVAL;
 
        if (vb2_is_busy(q))
                return -EBUSY;
 
-       memset(&f->fmt.pix, 0, sizeof(f->fmt.pix));
-       f->fmt.pix.pixelformat = V4L2_PIX_FMT_SDR_U8;
+       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 rtl2832_sdr_try_fmt_vid_cap(struct file *file, void *priv,
+static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,
                struct v4l2_format *f)
 {
        struct rtl2832_sdr_state *s = video_drvdata(file);
+       int i;
        dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__,
-                       (char *)&f->fmt.pix.pixelformat);
+                       (char *)&f->fmt.sdr.pixelformat);
 
-       if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+       if (f->type != V4L2_BUF_TYPE_SDR_CAPTURE)
                return -EINVAL;
 
-       memset(&f->fmt.pix, 0, sizeof(f->fmt.pix));
-       f->fmt.pix.pixelformat = V4L2_PIX_FMT_SDR_U8;
+       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;
 }
@@ -1037,14 +1162,10 @@ static int rtl2832_sdr_try_fmt_vid_cap(struct file 
*file, void *priv,
 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = {
        .vidioc_querycap          = rtl2832_sdr_querycap,
 
-       .vidioc_enum_fmt_vid_cap  = rtl2832_sdr_enum_fmt_vid_cap,
-       .vidioc_g_fmt_vid_cap     = rtl2832_sdr_g_fmt_vid_cap,
-       .vidioc_s_fmt_vid_cap     = rtl2832_sdr_s_fmt_vid_cap,
-       .vidioc_try_fmt_vid_cap   = rtl2832_sdr_try_fmt_vid_cap,
-
-       .vidioc_enum_input        = rtl2832_sdr_enum_input,
-       .vidioc_g_input           = rtl2832_sdr_g_input,
-       .vidioc_s_input           = rtl2832_sdr_s_input,
+       .vidioc_enum_fmt_sdr_cap  = rtl2832_sdr_enum_fmt_sdr_cap,
+       .vidioc_g_fmt_sdr_cap     = rtl2832_sdr_g_fmt_sdr_cap,
+       .vidioc_s_fmt_sdr_cap     = rtl2832_sdr_s_fmt_sdr_cap,
+       .vidioc_try_fmt_sdr_cap   = rtl2832_sdr_try_fmt_sdr_cap,
 
        .vidioc_reqbufs           = vb2_ioctl_reqbufs,
        .vidioc_create_bufs       = vb2_ioctl_create_bufs,
@@ -1056,9 +1177,12 @@ static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops 
= {
        .vidioc_streamon          = vb2_ioctl_streamon,
        .vidioc_streamoff         = vb2_ioctl_streamoff,
 
-       .vidioc_g_tuner           = vidioc_g_tuner,
-       .vidioc_s_tuner           = vidioc_s_tuner,
-       .vidioc_s_frequency       = vidioc_s_frequency,
+       .vidioc_g_tuner           = rtl2832_sdr_g_tuner,
+       .vidioc_s_tuner           = rtl2832_sdr_s_tuner,
+
+       .vidioc_enum_freq_bands   = rtl2832_sdr_enum_freq_bands,
+       .vidioc_g_frequency       = rtl2832_sdr_g_frequency,
+       .vidioc_s_frequency       = rtl2832_sdr_s_frequency,
 
        .vidioc_subscribe_event   = v4l2_ctrl_subscribe_event,
        .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
@@ -1076,7 +1200,7 @@ static const struct v4l2_file_operations rtl2832_sdr_fops 
= {
 };
 
 static struct video_device rtl2832_sdr_template = {
-       .name                     = "Realtek RTL2832U SDR",
+       .name                     = "Realtek RTL2832 SDR",
        .release                  = video_device_release_empty,
        .fops                     = &rtl2832_sdr_fops,
        .ioctl_ops                = &rtl2832_sdr_ioctl_ops,
@@ -1094,14 +1218,7 @@ static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
                        ctrl->minimum, ctrl->maximum, ctrl->step);
 
        switch (ctrl->id) {
-       case RTL2832_SDR_CID_SAMPLING_MODE:
-       case RTL2832_SDR_CID_SAMPLING_RATE:
-       case RTL2832_SDR_CID_SAMPLING_RESOLUTION:
-               ret = rtl2832_sdr_set_adc(s);
-               break;
-       case RTL2832_SDR_CID_TUNER_RF:
        case RTL2832_SDR_CID_TUNER_BW:
-       case RTL2832_SDR_CID_TUNER_IF:
        case RTL2832_SDR_CID_TUNER_GAIN:
                ret = rtl2832_sdr_set_tuner(s);
                break;
@@ -1132,49 +1249,6 @@ struct dvb_frontend *rtl2832_sdr_attach(struct 
dvb_frontend *fe,
        int ret;
        struct rtl2832_sdr_state *s;
        struct dvb_usb_device *d = i2c_get_adapdata(i2c);
-       static const char * const ctrl_sampling_mode_qmenu_strings[] = {
-               "Quadrature Sampling",
-               NULL,
-       };
-       static const struct v4l2_ctrl_config ctrl_sampling_mode = {
-               .ops    = &rtl2832_sdr_ctrl_ops,
-               .id     = RTL2832_SDR_CID_SAMPLING_MODE,
-               .type   = V4L2_CTRL_TYPE_MENU,
-               .flags  = V4L2_CTRL_FLAG_INACTIVE,
-               .name   = "Sampling Mode",
-               .qmenu  = ctrl_sampling_mode_qmenu_strings,
-       };
-       static const struct v4l2_ctrl_config ctrl_sampling_rate = {
-               .ops    = &rtl2832_sdr_ctrl_ops,
-               .id     = RTL2832_SDR_CID_SAMPLING_RATE,
-               .type   = V4L2_CTRL_TYPE_INTEGER64,
-               .name   = "Sampling Rate",
-               .min    =  900001,
-               .max    = 2800000,
-               .def    = 2048000,
-               .step   = 1,
-       };
-       static const struct v4l2_ctrl_config ctrl_sampling_resolution = {
-               .ops    = &rtl2832_sdr_ctrl_ops,
-               .id     = RTL2832_SDR_CID_SAMPLING_RESOLUTION,
-               .type   = V4L2_CTRL_TYPE_INTEGER,
-               .flags  = V4L2_CTRL_FLAG_INACTIVE,
-               .name   = "Sampling Resolution",
-               .min    = 8,
-               .max    = 8,
-               .def    = 8,
-               .step   = 1,
-       };
-       static const struct v4l2_ctrl_config ctrl_tuner_rf = {
-               .ops    = &rtl2832_sdr_ctrl_ops,
-               .id     = RTL2832_SDR_CID_TUNER_RF,
-               .type   = V4L2_CTRL_TYPE_INTEGER64,
-               .name   = "Tuner RF",
-               .min    =   40000000,
-               .max    = 2000000000,
-               .def    =  100000000,
-               .step   = 1,
-       };
        static const struct v4l2_ctrl_config ctrl_tuner_bw = {
                .ops    = &rtl2832_sdr_ctrl_ops,
                .id     = RTL2832_SDR_CID_TUNER_BW,
@@ -1185,17 +1259,6 @@ struct dvb_frontend *rtl2832_sdr_attach(struct 
dvb_frontend *fe,
                .def    =  600000,
                .step   = 1,
        };
-       static const struct v4l2_ctrl_config ctrl_tuner_if = {
-               .ops    = &rtl2832_sdr_ctrl_ops,
-               .id     = RTL2832_SDR_CID_TUNER_IF,
-               .type   = V4L2_CTRL_TYPE_INTEGER,
-               .flags  = V4L2_CTRL_FLAG_INACTIVE,
-               .name   = "Tuner IF",
-               .min    = 0,
-               .max    = 10,
-               .def    = 0,
-               .step   = 1,
-       };
        static const struct v4l2_ctrl_config ctrl_tuner_gain = {
                .ops    = &rtl2832_sdr_ctrl_ops,
                .id     = RTL2832_SDR_CID_TUNER_GAIN,
@@ -1227,7 +1290,7 @@ struct dvb_frontend *rtl2832_sdr_attach(struct 
dvb_frontend *fe,
        INIT_LIST_HEAD(&s->queued_bufs);
 
        /* Init videobuf2 queue structure */
-       s->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+       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 rtl2832_sdr_frame_buf);
@@ -1248,13 +1311,8 @@ struct dvb_frontend *rtl2832_sdr_attach(struct 
dvb_frontend *fe,
        video_set_drvdata(&s->vdev, s);
 
        /* Register controls */
-       v4l2_ctrl_handler_init(&s->ctrl_handler, 7);
-       v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_mode, NULL);
-       s->ctrl_sampling_rate = v4l2_ctrl_new_custom(&s->ctrl_handler, 
&ctrl_sampling_rate, NULL);
-       v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_resolution, NULL);
-       s->ctrl_tuner_rf = v4l2_ctrl_new_custom(&s->ctrl_handler, 
&ctrl_tuner_rf, NULL);
+       v4l2_ctrl_handler_init(&s->ctrl_handler, 2);
        s->ctrl_tuner_bw = v4l2_ctrl_new_custom(&s->ctrl_handler, 
&ctrl_tuner_bw, NULL);
-       s->ctrl_tuner_if = v4l2_ctrl_new_custom(&s->ctrl_handler, 
&ctrl_tuner_if, NULL);
        s->ctrl_tuner_gain = v4l2_ctrl_new_custom(&s->ctrl_handler, 
&ctrl_tuner_gain, NULL);
        if (s->ctrl_handler.error) {
                ret = s->ctrl_handler.error;
@@ -1274,8 +1332,9 @@ struct dvb_frontend *rtl2832_sdr_attach(struct 
dvb_frontend *fe,
        s->v4l2_dev.ctrl_handler = &s->ctrl_handler;
        s->vdev.v4l2_dev = &s->v4l2_dev;
        s->vdev.lock = &s->v4l2_lock;
+       s->vdev.vfl_dir = VFL_DIR_RX;
 
-       ret = video_register_device(&s->vdev, VFL_TYPE_GRABBER, -1);
+       ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1);
        if (ret < 0) {
                dev_err(&s->udev->dev,
                                "Failed to register as video device (%d)\n",
-- 
1.8.5.3

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