2 * Realtek RTL2832U SDR driver
4 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 * GNU Radio plugin "gr-kernel" for device usage will be on:
21 * http://git.linuxtv.org/anttip/gr-kernel.git
25 #include "dvb_frontend.h"
26 #include "rtl2832_sdr.h"
29 #include <media/v4l2-device.h>
30 #include <media/v4l2-ioctl.h>
31 #include <media/v4l2-ctrls.h>
32 #include <media/v4l2-event.h>
33 #include <media/videobuf2-vmalloc.h>
35 #include <linux/jiffies.h>
36 #include <linux/math64.h>
38 static bool rtl2832_sdr_emulated_fmt;
39 module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644);
40 MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
42 #define MAX_BULK_BUFS (10)
43 #define BULK_BUFFER_SIZE (128 * 512)
45 static const struct v4l2_frequency_band bands_adc[] = {
48 .type = V4L2_TUNER_ADC,
50 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
56 .type = V4L2_TUNER_ADC,
58 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
64 .type = V4L2_TUNER_ADC,
66 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
72 static const struct v4l2_frequency_band bands_fm[] = {
75 .type = V4L2_TUNER_RF,
77 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
79 .rangehigh = 2000000000,
84 struct rtl2832_sdr_format {
90 static struct rtl2832_sdr_format formats[] = {
93 .pixelformat = V4L2_SDR_FMT_CU8,
94 .buffersize = BULK_BUFFER_SIZE,
96 .name = "Complex U16LE (emulated)",
97 .pixelformat = V4L2_SDR_FMT_CU16LE,
98 .buffersize = BULK_BUFFER_SIZE * 2,
102 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
104 /* intermediate buffers with raw data from the USB device */
105 struct rtl2832_sdr_frame_buf {
106 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */
107 struct list_head list;
110 struct rtl2832_sdr_dev {
111 #define POWER_ON (1 << 1)
112 #define URB_BUF (1 << 2)
115 const struct rtl2832_config *cfg;
116 struct dvb_frontend *fe;
117 struct dvb_usb_device *d;
118 struct i2c_adapter *i2c;
121 struct video_device vdev;
122 struct v4l2_device v4l2_dev;
124 /* videobuf2 queue and queued buffers list */
125 struct vb2_queue vb_queue;
126 struct list_head queued_bufs;
127 spinlock_t queued_bufs_lock; /* Protects queued_bufs */
128 unsigned sequence; /* buffer sequence counter */
130 /* Note if taking both locks v4l2_lock must always be locked first! */
131 struct mutex v4l2_lock; /* Protects everything else */
132 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
134 /* Pointer to our usb_device, will be NULL after unplug */
135 struct usb_device *udev; /* Both mutexes most be hold when setting! */
137 unsigned int vb_full; /* vb is full and packets dropped */
139 struct urb *urb_list[MAX_BULK_BUFS];
141 unsigned long buf_size;
142 u8 *buf_list[MAX_BULK_BUFS];
143 dma_addr_t dma_addr[MAX_BULK_BUFS];
144 int urbs_initialized;
147 unsigned int f_adc, f_tuner;
150 unsigned int num_formats;
153 struct v4l2_ctrl_handler hdl;
154 struct v4l2_ctrl *bandwidth_auto;
155 struct v4l2_ctrl *bandwidth;
157 /* for sample rate calc */
159 unsigned int sample_measured;
160 unsigned long jiffies_next;
163 /* write multiple hardware registers */
164 static int rtl2832_sdr_wr(struct rtl2832_sdr_dev *dev, u8 reg, const u8 *val,
168 #define MAX_WR_LEN 24
169 #define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
170 u8 buf[MAX_WR_XFER_LEN];
171 struct i2c_msg msg[1] = {
173 .addr = dev->cfg->i2c_addr,
180 if (WARN_ON(len > MAX_WR_LEN))
184 memcpy(&buf[1], val, len);
186 ret = i2c_transfer(dev->i2c, msg, 1);
190 dev_err(&dev->i2c->dev,
191 "%s: I2C wr failed=%d reg=%02x len=%d\n",
192 KBUILD_MODNAME, ret, reg, len);
198 /* read multiple hardware registers */
199 static int rtl2832_sdr_rd(struct rtl2832_sdr_dev *dev, u8 reg, u8 *val, int len)
202 struct i2c_msg msg[2] = {
204 .addr = dev->cfg->i2c_addr,
209 .addr = dev->cfg->i2c_addr,
216 ret = i2c_transfer(dev->i2c, msg, 2);
220 dev_err(&dev->i2c->dev,
221 "%s: I2C rd failed=%d reg=%02x len=%d\n",
222 KBUILD_MODNAME, ret, reg, len);
228 /* write multiple registers */
229 static int rtl2832_sdr_wr_regs(struct rtl2832_sdr_dev *dev, u16 reg,
230 const u8 *val, int len)
233 u8 reg2 = (reg >> 0) & 0xff;
234 u8 bank = (reg >> 8) & 0xff;
236 /* switch bank if needed */
237 if (bank != dev->bank) {
238 ret = rtl2832_sdr_wr(dev, 0x00, &bank, 1);
245 return rtl2832_sdr_wr(dev, reg2, val, len);
248 /* read multiple registers */
249 static int rtl2832_sdr_rd_regs(struct rtl2832_sdr_dev *dev, u16 reg, u8 *val,
253 u8 reg2 = (reg >> 0) & 0xff;
254 u8 bank = (reg >> 8) & 0xff;
256 /* switch bank if needed */
257 if (bank != dev->bank) {
258 ret = rtl2832_sdr_wr(dev, 0x00, &bank, 1);
265 return rtl2832_sdr_rd(dev, reg2, val, len);
268 /* write single register */
269 static int rtl2832_sdr_wr_reg(struct rtl2832_sdr_dev *dev, u16 reg, u8 val)
271 return rtl2832_sdr_wr_regs(dev, reg, &val, 1);
275 /* read single register */
276 static int rtl2832_sdr_rd_reg(struct rtl2832_sdr_dev *dev, u16 reg, u8 *val)
278 return rtl2832_sdr_rd_regs(dev, reg, val, 1);
282 /* write single register with mask */
283 static int rtl2832_sdr_wr_reg_mask(struct rtl2832_sdr_dev *dev, u16 reg,
289 /* no need for read if whole reg is written */
291 ret = rtl2832_sdr_rd_regs(dev, reg, &tmp, 1);
300 return rtl2832_sdr_wr_regs(dev, reg, &val, 1);
304 /* read single register with mask */
305 static int rtl2832_sdr_rd_reg_mask(struct rtl2832_sdr_dev *dev, u16 reg,
311 ret = rtl2832_sdr_rd_regs(dev, reg, &tmp, 1);
317 /* find position of the first bit */
318 for (i = 0; i < 8; i++) {
319 if ((mask >> i) & 0x01)
328 /* Private functions */
329 static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf(
330 struct rtl2832_sdr_dev *dev)
333 struct rtl2832_sdr_frame_buf *buf = NULL;
335 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
336 if (list_empty(&dev->queued_bufs))
339 buf = list_entry(dev->queued_bufs.next,
340 struct rtl2832_sdr_frame_buf, list);
341 list_del(&buf->list);
343 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
347 static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev,
348 void *dst, const u8 *src, unsigned int src_len)
350 unsigned int dst_len;
352 if (dev->pixelformat == V4L2_SDR_FMT_CU8) {
353 /* native stream, no need to convert */
354 memcpy(dst, src, src_len);
356 } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) {
357 /* convert u8 to u16 */
361 for (i = 0; i < src_len; i++)
362 *u16dst++ = (src[i] << 8) | (src[i] >> 0);
363 dst_len = 2 * src_len;
368 /* calculate sample rate and output it in 10 seconds intervals */
369 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) {
370 #define MSECS 10000UL
371 unsigned int msecs = jiffies_to_msecs(jiffies -
372 dev->jiffies_next + msecs_to_jiffies(MSECS));
373 unsigned int samples = dev->sample - dev->sample_measured;
375 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
376 dev->sample_measured = dev->sample;
377 dev_dbg(&dev->udev->dev,
378 "slen=%u samples=%u msecs=%u sample rate=%lu\n",
379 src_len, samples, msecs,
380 samples * 1000UL / msecs);
383 /* total number of I+Q pairs */
384 dev->sample += src_len / 2;
390 * This gets called for the bulk stream pipe. This is done in interrupt
391 * time, so it has to be fast, not crash, and not stall. Neat.
393 static void rtl2832_sdr_urb_complete(struct urb *urb)
395 struct rtl2832_sdr_dev *dev = urb->context;
396 struct rtl2832_sdr_frame_buf *fbuf;
398 dev_dbg_ratelimited(&dev->udev->dev,
399 "status=%d length=%d/%d errors=%d\n",
400 urb->status, urb->actual_length,
401 urb->transfer_buffer_length, urb->error_count);
403 switch (urb->status) {
404 case 0: /* success */
405 case -ETIMEDOUT: /* NAK */
407 case -ECONNRESET: /* kill */
412 dev_err_ratelimited(&dev->udev->dev, "urb failed=%d\n",
417 if (likely(urb->actual_length > 0)) {
420 /* get free framebuffer */
421 fbuf = rtl2832_sdr_get_next_fill_buf(dev);
422 if (unlikely(fbuf == NULL)) {
424 dev_notice_ratelimited(&dev->udev->dev,
425 "videobuf is full, %d packets dropped\n",
430 /* fill framebuffer */
431 ptr = vb2_plane_vaddr(&fbuf->vb, 0);
432 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer,
434 vb2_set_plane_payload(&fbuf->vb, 0, len);
435 v4l2_get_timestamp(&fbuf->vb.v4l2_buf.timestamp);
436 fbuf->vb.v4l2_buf.sequence = dev->sequence++;
437 vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE);
440 usb_submit_urb(urb, GFP_ATOMIC);
443 static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev)
447 for (i = dev->urbs_submitted - 1; i >= 0; i--) {
448 dev_dbg(&dev->udev->dev, "kill urb=%d\n", i);
450 usb_kill_urb(dev->urb_list[i]);
452 dev->urbs_submitted = 0;
457 static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev)
461 for (i = 0; i < dev->urbs_initialized; i++) {
462 dev_dbg(&dev->udev->dev, "submit urb=%d\n", i);
463 ret = usb_submit_urb(dev->urb_list[i], GFP_ATOMIC);
465 dev_err(&dev->udev->dev,
466 "Could not submit urb no. %d - get them all back\n",
468 rtl2832_sdr_kill_urbs(dev);
471 dev->urbs_submitted++;
477 static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev)
479 if (dev->flags & USB_STATE_URB_BUF) {
480 while (dev->buf_num) {
482 dev_dbg(&dev->udev->dev, "free buf=%d\n", dev->buf_num);
483 usb_free_coherent(dev->udev, dev->buf_size,
484 dev->buf_list[dev->buf_num],
485 dev->dma_addr[dev->buf_num]);
488 dev->flags &= ~USB_STATE_URB_BUF;
493 static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev)
496 dev->buf_size = BULK_BUFFER_SIZE;
498 dev_dbg(&dev->udev->dev, "all in all I will use %u bytes for streaming\n",
499 MAX_BULK_BUFS * BULK_BUFFER_SIZE);
501 for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) {
502 dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev,
503 BULK_BUFFER_SIZE, GFP_ATOMIC,
504 &dev->dma_addr[dev->buf_num]);
505 if (!dev->buf_list[dev->buf_num]) {
506 dev_dbg(&dev->udev->dev, "alloc buf=%d failed\n",
508 rtl2832_sdr_free_stream_bufs(dev);
512 dev_dbg(&dev->udev->dev, "alloc buf=%d %p (dma %llu)\n",
513 dev->buf_num, dev->buf_list[dev->buf_num],
514 (long long)dev->dma_addr[dev->buf_num]);
515 dev->flags |= USB_STATE_URB_BUF;
521 static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev)
525 rtl2832_sdr_kill_urbs(dev);
527 for (i = dev->urbs_initialized - 1; i >= 0; i--) {
528 if (dev->urb_list[i]) {
529 dev_dbg(&dev->udev->dev, "free urb=%d\n", i);
531 usb_free_urb(dev->urb_list[i]);
534 dev->urbs_initialized = 0;
539 static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev)
543 /* allocate the URBs */
544 for (i = 0; i < MAX_BULK_BUFS; i++) {
545 dev_dbg(&dev->udev->dev, "alloc urb=%d\n", i);
546 dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
547 if (!dev->urb_list[i]) {
548 dev_dbg(&dev->udev->dev, "failed\n");
549 for (j = 0; j < i; j++)
550 usb_free_urb(dev->urb_list[j]);
553 usb_fill_bulk_urb(dev->urb_list[i],
555 usb_rcvbulkpipe(dev->udev, 0x81),
558 rtl2832_sdr_urb_complete, dev);
560 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
561 dev->urb_list[i]->transfer_dma = dev->dma_addr[i];
562 dev->urbs_initialized++;
568 /* Must be called with vb_queue_lock hold */
569 static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev)
573 dev_dbg(&dev->udev->dev, "\n");
575 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
576 while (!list_empty(&dev->queued_bufs)) {
577 struct rtl2832_sdr_frame_buf *buf;
579 buf = list_entry(dev->queued_bufs.next,
580 struct rtl2832_sdr_frame_buf, list);
581 list_del(&buf->list);
582 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
584 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
587 /* The user yanked out the cable... */
588 static void rtl2832_sdr_release_sec(struct dvb_frontend *fe)
590 struct rtl2832_sdr_dev *dev = fe->sec_priv;
592 dev_dbg(&dev->udev->dev, "\n");
594 mutex_lock(&dev->vb_queue_lock);
595 mutex_lock(&dev->v4l2_lock);
596 /* No need to keep the urbs around after disconnection */
599 v4l2_device_disconnect(&dev->v4l2_dev);
600 video_unregister_device(&dev->vdev);
601 mutex_unlock(&dev->v4l2_lock);
602 mutex_unlock(&dev->vb_queue_lock);
604 v4l2_device_put(&dev->v4l2_dev);
609 static int rtl2832_sdr_querycap(struct file *file, void *fh,
610 struct v4l2_capability *cap)
612 struct rtl2832_sdr_dev *dev = video_drvdata(file);
614 dev_dbg(&dev->udev->dev, "\n");
616 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
617 strlcpy(cap->card, dev->vdev.name, sizeof(cap->card));
618 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
619 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
620 V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
621 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
625 /* Videobuf2 operations */
626 static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
627 const struct v4l2_format *fmt, unsigned int *nbuffers,
628 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[])
630 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
632 dev_dbg(&dev->udev->dev, "nbuffers=%d\n", *nbuffers);
634 /* Need at least 8 buffers */
635 if (vq->num_buffers + *nbuffers < 8)
636 *nbuffers = 8 - vq->num_buffers;
638 sizes[0] = PAGE_ALIGN(dev->buffersize);
639 dev_dbg(&dev->udev->dev, "nbuffers=%d sizes[0]=%d\n",
640 *nbuffers, sizes[0]);
644 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb)
646 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
648 /* Don't allow queing new buffers after device disconnection */
655 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb)
657 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
658 struct rtl2832_sdr_frame_buf *buf =
659 container_of(vb, struct rtl2832_sdr_frame_buf, vb);
662 /* Check the device has not disconnected between prep and queuing */
664 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
668 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
669 list_add_tail(&buf->list, &dev->queued_bufs);
670 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
673 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev)
675 struct dvb_frontend *fe = dev->fe;
677 unsigned int f_sr, f_if;
678 u8 buf[4], u8tmp1, u8tmp2;
682 dev_dbg(&dev->udev->dev, "f_adc=%u\n", dev->f_adc);
684 if (!test_bit(POWER_ON, &dev->flags))
692 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x00\x00", 2);
696 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x00\x00\x00\x00", 4);
700 /* get IF from tuner */
701 if (fe->ops.tuner_ops.get_if_frequency)
702 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if);
710 u64tmp = f_if % dev->cfg->xtal;
712 u64tmp = div_u64(u64tmp, dev->cfg->xtal);
714 u32tmp = u64tmp & 0x3fffff;
716 dev_dbg(&dev->udev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp);
718 buf[0] = (u32tmp >> 16) & 0xff;
719 buf[1] = (u32tmp >> 8) & 0xff;
720 buf[2] = (u32tmp >> 0) & 0xff;
722 ret = rtl2832_sdr_wr_regs(dev, 0x119, buf, 3);
727 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */
729 u8tmp1 = 0x1a; /* disable Zero-IF */
730 u8tmp2 = 0x8d; /* enable ADC I */
732 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */
733 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */
736 ret = rtl2832_sdr_wr_reg(dev, 0x1b1, u8tmp1);
740 ret = rtl2832_sdr_wr_reg(dev, 0x008, u8tmp2);
744 ret = rtl2832_sdr_wr_reg(dev, 0x006, 0x80);
748 /* program sampling rate (resampling down) */
749 u32tmp = div_u64(dev->cfg->xtal * 0x400000ULL, f_sr * 4U);
751 buf[0] = (u32tmp >> 24) & 0xff;
752 buf[1] = (u32tmp >> 16) & 0xff;
753 buf[2] = (u32tmp >> 8) & 0xff;
754 buf[3] = (u32tmp >> 0) & 0xff;
755 ret = rtl2832_sdr_wr_regs(dev, 0x19f, buf, 4);
759 /* low-pass filter */
760 ret = rtl2832_sdr_wr_regs(dev, 0x11c,
761 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5",
766 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2);
771 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x05", 1);
775 ret = rtl2832_sdr_wr_regs(dev, 0x01a, "\x1b\x16\x0d\x06\x01\xff", 6);
780 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\xf0\x0f", 3);
785 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\x60", 1);
789 /* used RF tuner based settings */
790 switch (dev->cfg->tuner) {
791 case RTL2832_TUNER_E4000:
792 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
793 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
794 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1);
795 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x30", 1);
796 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xd0", 1);
797 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
798 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x18", 1);
799 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
800 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
801 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
802 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
803 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
804 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
805 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
806 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
807 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
808 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
809 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
810 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
811 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
812 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xd4", 1);
813 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1);
814 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1);
815 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1);
816 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x14", 1);
817 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xec", 1);
818 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1);
819 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1);
820 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1);
821 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x83", 1);
822 ret = rtl2832_sdr_wr_regs(dev, 0x010, "\x49", 1);
823 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x87", 1);
824 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x85", 1);
825 ret = rtl2832_sdr_wr_regs(dev, 0x013, "\x02", 1);
827 case RTL2832_TUNER_FC0012:
828 case RTL2832_TUNER_FC0013:
829 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
830 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
831 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1);
832 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x2c", 1);
833 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1);
834 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
835 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x16", 1);
836 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
837 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
838 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
839 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
840 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
841 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
842 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
843 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
844 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
845 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
846 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
847 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
848 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
849 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xe9\xbf", 2);
850 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1);
851 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1);
852 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1);
853 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x11", 1);
854 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xef", 1);
855 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1);
856 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1);
857 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1);
859 case RTL2832_TUNER_R820T:
860 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
861 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
862 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x01", 1);
863 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x80", 1);
864 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x24", 1);
865 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1);
866 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
867 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x14", 1);
868 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
869 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
870 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
871 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
872 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
873 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
874 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
875 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
876 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
877 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
878 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
879 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
880 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
881 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xf4", 1);
884 dev_notice(&dev->udev->dev, "Unsupported tuner\n");
888 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x04, 0x04);
892 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x00, 0x04);
899 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev)
903 dev_dbg(&dev->udev->dev, "\n");
906 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\xe0", 1);
911 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x20", 1);
915 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2);
920 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\x0f\xff", 3);
924 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x40\x00", 2);
928 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x06\x3f\xce\xcc", 4);
935 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev)
937 struct dvb_frontend *fe = dev->fe;
938 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
939 struct v4l2_ctrl *bandwidth_auto;
940 struct v4l2_ctrl *bandwidth;
945 if (dev->f_tuner == 0)
951 bandwidth_auto = v4l2_ctrl_find(&dev->hdl,
952 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO);
953 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH);
954 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) {
955 c->bandwidth_hz = dev->f_adc;
956 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc);
958 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth);
961 c->frequency = dev->f_tuner;
962 c->delivery_system = SYS_DVBT;
964 dev_dbg(&dev->udev->dev, "frequency=%u bandwidth=%d\n",
965 c->frequency, c->bandwidth_hz);
967 if (!test_bit(POWER_ON, &dev->flags))
970 if (fe->ops.tuner_ops.set_params)
971 fe->ops.tuner_ops.set_params(fe);
976 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev)
978 struct dvb_frontend *fe = dev->fe;
980 dev_dbg(&dev->udev->dev, "\n");
982 if (fe->ops.tuner_ops.init)
983 fe->ops.tuner_ops.init(fe);
988 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev)
990 struct dvb_frontend *fe = dev->fe;
992 dev_dbg(&dev->udev->dev, "\n");
994 if (fe->ops.tuner_ops.sleep)
995 fe->ops.tuner_ops.sleep(fe);
1000 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count)
1002 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
1005 dev_dbg(&dev->udev->dev, "\n");
1010 if (mutex_lock_interruptible(&dev->v4l2_lock))
1011 return -ERESTARTSYS;
1013 if (dev->d->props->power_ctrl)
1014 dev->d->props->power_ctrl(dev->d, 1);
1017 if (dev->d->props->frontend_ctrl)
1018 dev->d->props->frontend_ctrl(dev->fe, 1);
1020 set_bit(POWER_ON, &dev->flags);
1022 ret = rtl2832_sdr_set_tuner(dev);
1026 ret = rtl2832_sdr_set_tuner_freq(dev);
1030 ret = rtl2832_sdr_set_adc(dev);
1034 ret = rtl2832_sdr_alloc_stream_bufs(dev);
1038 ret = rtl2832_sdr_alloc_urbs(dev);
1044 ret = rtl2832_sdr_submit_urbs(dev);
1049 mutex_unlock(&dev->v4l2_lock);
1054 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq)
1056 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
1058 dev_dbg(&dev->udev->dev, "\n");
1060 mutex_lock(&dev->v4l2_lock);
1062 rtl2832_sdr_kill_urbs(dev);
1063 rtl2832_sdr_free_urbs(dev);
1064 rtl2832_sdr_free_stream_bufs(dev);
1065 rtl2832_sdr_cleanup_queued_bufs(dev);
1066 rtl2832_sdr_unset_adc(dev);
1067 rtl2832_sdr_unset_tuner(dev);
1069 clear_bit(POWER_ON, &dev->flags);
1072 if (dev->d->props->frontend_ctrl)
1073 dev->d->props->frontend_ctrl(dev->fe, 0);
1075 if (dev->d->props->power_ctrl)
1076 dev->d->props->power_ctrl(dev->d, 0);
1078 mutex_unlock(&dev->v4l2_lock);
1081 static struct vb2_ops rtl2832_sdr_vb2_ops = {
1082 .queue_setup = rtl2832_sdr_queue_setup,
1083 .buf_prepare = rtl2832_sdr_buf_prepare,
1084 .buf_queue = rtl2832_sdr_buf_queue,
1085 .start_streaming = rtl2832_sdr_start_streaming,
1086 .stop_streaming = rtl2832_sdr_stop_streaming,
1087 .wait_prepare = vb2_ops_wait_prepare,
1088 .wait_finish = vb2_ops_wait_finish,
1091 static int rtl2832_sdr_g_tuner(struct file *file, void *priv,
1092 struct v4l2_tuner *v)
1094 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1096 dev_dbg(&dev->udev->dev, "index=%d type=%d\n", v->index, v->type);
1098 if (v->index == 0) {
1099 strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
1100 v->type = V4L2_TUNER_ADC;
1101 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
1102 v->rangelow = 300000;
1103 v->rangehigh = 3200000;
1104 } else if (v->index == 1) {
1105 strlcpy(v->name, "RF: <unknown>", sizeof(v->name));
1106 v->type = V4L2_TUNER_RF;
1107 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
1108 v->rangelow = 50000000;
1109 v->rangehigh = 2000000000;
1117 static int rtl2832_sdr_s_tuner(struct file *file, void *priv,
1118 const struct v4l2_tuner *v)
1120 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1122 dev_dbg(&dev->udev->dev, "\n");
1129 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv,
1130 struct v4l2_frequency_band *band)
1132 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1134 dev_dbg(&dev->udev->dev, "tuner=%d type=%d index=%d\n",
1135 band->tuner, band->type, band->index);
1137 if (band->tuner == 0) {
1138 if (band->index >= ARRAY_SIZE(bands_adc))
1141 *band = bands_adc[band->index];
1142 } else if (band->tuner == 1) {
1143 if (band->index >= ARRAY_SIZE(bands_fm))
1146 *band = bands_fm[band->index];
1154 static int rtl2832_sdr_g_frequency(struct file *file, void *priv,
1155 struct v4l2_frequency *f)
1157 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1160 dev_dbg(&dev->udev->dev, "tuner=%d type=%d\n",
1163 if (f->tuner == 0) {
1164 f->frequency = dev->f_adc;
1165 f->type = V4L2_TUNER_ADC;
1166 } else if (f->tuner == 1) {
1167 f->frequency = dev->f_tuner;
1168 f->type = V4L2_TUNER_RF;
1176 static int rtl2832_sdr_s_frequency(struct file *file, void *priv,
1177 const struct v4l2_frequency *f)
1179 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1182 dev_dbg(&dev->udev->dev, "tuner=%d type=%d frequency=%u\n",
1183 f->tuner, f->type, f->frequency);
1185 /* ADC band midpoints */
1186 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2)
1187 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2)
1189 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) {
1190 if (f->frequency < BAND_ADC_0)
1192 else if (f->frequency < BAND_ADC_1)
1197 dev->f_adc = clamp_t(unsigned int, f->frequency,
1198 bands_adc[band].rangelow,
1199 bands_adc[band].rangehigh);
1201 dev_dbg(&dev->udev->dev, "ADC frequency=%u Hz\n", dev->f_adc);
1202 ret = rtl2832_sdr_set_adc(dev);
1203 } else if (f->tuner == 1) {
1204 dev->f_tuner = clamp_t(unsigned int, f->frequency,
1205 bands_fm[0].rangelow,
1206 bands_fm[0].rangehigh);
1207 dev_dbg(&dev->udev->dev, "RF frequency=%u Hz\n", f->frequency);
1209 ret = rtl2832_sdr_set_tuner_freq(dev);
1217 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,
1218 struct v4l2_fmtdesc *f)
1220 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1222 dev_dbg(&dev->udev->dev, "\n");
1224 if (f->index >= dev->num_formats)
1227 strlcpy(f->description, formats[f->index].name, sizeof(f->description));
1228 f->pixelformat = formats[f->index].pixelformat;
1233 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv,
1234 struct v4l2_format *f)
1236 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1238 dev_dbg(&dev->udev->dev, "\n");
1240 f->fmt.sdr.pixelformat = dev->pixelformat;
1241 f->fmt.sdr.buffersize = dev->buffersize;
1243 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1248 static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,
1249 struct v4l2_format *f)
1251 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1252 struct vb2_queue *q = &dev->vb_queue;
1255 dev_dbg(&dev->udev->dev, "pixelformat fourcc %4.4s\n",
1256 (char *)&f->fmt.sdr.pixelformat);
1261 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1262 for (i = 0; i < dev->num_formats; i++) {
1263 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1264 dev->pixelformat = formats[i].pixelformat;
1265 dev->buffersize = formats[i].buffersize;
1266 f->fmt.sdr.buffersize = formats[i].buffersize;
1271 dev->pixelformat = formats[0].pixelformat;
1272 dev->buffersize = formats[0].buffersize;
1273 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1274 f->fmt.sdr.buffersize = formats[0].buffersize;
1279 static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,
1280 struct v4l2_format *f)
1282 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1285 dev_dbg(&dev->udev->dev, "pixelformat fourcc %4.4s\n",
1286 (char *)&f->fmt.sdr.pixelformat);
1288 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1289 for (i = 0; i < dev->num_formats; i++) {
1290 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1291 f->fmt.sdr.buffersize = formats[i].buffersize;
1296 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1297 f->fmt.sdr.buffersize = formats[0].buffersize;
1302 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = {
1303 .vidioc_querycap = rtl2832_sdr_querycap,
1305 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap,
1306 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap,
1307 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap,
1308 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap,
1310 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1311 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1312 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1313 .vidioc_querybuf = vb2_ioctl_querybuf,
1314 .vidioc_qbuf = vb2_ioctl_qbuf,
1315 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1317 .vidioc_streamon = vb2_ioctl_streamon,
1318 .vidioc_streamoff = vb2_ioctl_streamoff,
1320 .vidioc_g_tuner = rtl2832_sdr_g_tuner,
1321 .vidioc_s_tuner = rtl2832_sdr_s_tuner,
1323 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands,
1324 .vidioc_g_frequency = rtl2832_sdr_g_frequency,
1325 .vidioc_s_frequency = rtl2832_sdr_s_frequency,
1327 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1328 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1329 .vidioc_log_status = v4l2_ctrl_log_status,
1332 static const struct v4l2_file_operations rtl2832_sdr_fops = {
1333 .owner = THIS_MODULE,
1334 .open = v4l2_fh_open,
1335 .release = vb2_fop_release,
1336 .read = vb2_fop_read,
1337 .poll = vb2_fop_poll,
1338 .mmap = vb2_fop_mmap,
1339 .unlocked_ioctl = video_ioctl2,
1342 static struct video_device rtl2832_sdr_template = {
1343 .name = "Realtek RTL2832 SDR",
1344 .release = video_device_release_empty,
1345 .fops = &rtl2832_sdr_fops,
1346 .ioctl_ops = &rtl2832_sdr_ioctl_ops,
1349 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
1351 struct rtl2832_sdr_dev *dev =
1352 container_of(ctrl->handler, struct rtl2832_sdr_dev,
1354 struct dvb_frontend *fe = dev->fe;
1355 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1358 dev_dbg(&dev->udev->dev,
1359 "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n",
1360 ctrl->id, ctrl->name, ctrl->val,
1361 ctrl->minimum, ctrl->maximum, ctrl->step);
1364 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
1365 case V4L2_CID_RF_TUNER_BANDWIDTH:
1366 /* TODO: these controls should be moved to tuner drivers */
1367 if (dev->bandwidth_auto->val) {
1368 /* Round towards the closest legal value */
1369 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2);
1372 val = clamp_t(s32, val, dev->bandwidth->minimum,
1373 dev->bandwidth->maximum);
1374 offset = val - dev->bandwidth->minimum;
1375 offset = dev->bandwidth->step *
1376 div_u64(offset, dev->bandwidth->step);
1377 dev->bandwidth->val = dev->bandwidth->minimum + offset;
1379 c->bandwidth_hz = dev->bandwidth->val;
1381 if (!test_bit(POWER_ON, &dev->flags))
1384 if (fe->ops.tuner_ops.set_params)
1385 ret = fe->ops.tuner_ops.set_params(fe);
1396 static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = {
1397 .s_ctrl = rtl2832_sdr_s_ctrl,
1400 static void rtl2832_sdr_video_release(struct v4l2_device *v)
1402 struct rtl2832_sdr_dev *dev =
1403 container_of(v, struct rtl2832_sdr_dev, v4l2_dev);
1405 v4l2_ctrl_handler_free(&dev->hdl);
1406 v4l2_device_unregister(&dev->v4l2_dev);
1410 struct dvb_frontend *rtl2832_sdr_attach(struct dvb_frontend *fe,
1411 struct i2c_adapter *i2c, const struct rtl2832_config *cfg,
1412 struct v4l2_subdev *sd)
1415 struct rtl2832_sdr_dev *dev;
1416 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops;
1417 struct dvb_usb_device *d = i2c_get_adapdata(i2c);
1419 dev = kzalloc(sizeof(struct rtl2832_sdr_dev), GFP_KERNEL);
1421 dev_err(&d->udev->dev,
1422 "Could not allocate memory for rtl2832_sdr_dev\n");
1426 /* setup the state */
1429 dev->udev = d->udev;
1432 dev->f_adc = bands_adc[0].rangelow;
1433 dev->f_tuner = bands_fm[0].rangelow;
1434 dev->pixelformat = formats[0].pixelformat;
1435 dev->buffersize = formats[0].buffersize;
1436 dev->num_formats = NUM_FORMATS;
1437 if (!rtl2832_sdr_emulated_fmt)
1438 dev->num_formats -= 1;
1440 mutex_init(&dev->v4l2_lock);
1441 mutex_init(&dev->vb_queue_lock);
1442 spin_lock_init(&dev->queued_bufs_lock);
1443 INIT_LIST_HEAD(&dev->queued_bufs);
1445 /* Init videobuf2 queue structure */
1446 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;
1447 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1448 dev->vb_queue.drv_priv = dev;
1449 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf);
1450 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops;
1451 dev->vb_queue.mem_ops = &vb2_vmalloc_memops;
1452 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1453 ret = vb2_queue_init(&dev->vb_queue);
1455 dev_err(&dev->udev->dev, "Could not initialize vb2 queue\n");
1459 /* Register controls */
1460 switch (dev->cfg->tuner) {
1461 case RTL2832_TUNER_E4000:
1462 v4l2_ctrl_handler_init(&dev->hdl, 9);
1464 v4l2_ctrl_add_handler(&dev->hdl, sd->ctrl_handler, NULL);
1466 case RTL2832_TUNER_R820T:
1467 v4l2_ctrl_handler_init(&dev->hdl, 2);
1468 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1469 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1471 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1472 V4L2_CID_RF_TUNER_BANDWIDTH,
1473 0, 8000000, 100000, 0);
1474 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1476 case RTL2832_TUNER_FC0012:
1477 case RTL2832_TUNER_FC0013:
1478 v4l2_ctrl_handler_init(&dev->hdl, 2);
1479 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1480 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1482 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1483 V4L2_CID_RF_TUNER_BANDWIDTH,
1484 6000000, 8000000, 1000000,
1486 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1489 v4l2_ctrl_handler_init(&dev->hdl, 0);
1490 dev_notice(&dev->udev->dev, "%s: Unsupported tuner\n",
1492 goto err_free_controls;
1495 if (dev->hdl.error) {
1496 ret = dev->hdl.error;
1497 dev_err(&dev->udev->dev, "Could not initialize controls\n");
1498 goto err_free_controls;
1501 /* Init video_device structure */
1502 dev->vdev = rtl2832_sdr_template;
1503 dev->vdev.queue = &dev->vb_queue;
1504 dev->vdev.queue->lock = &dev->vb_queue_lock;
1505 video_set_drvdata(&dev->vdev, dev);
1507 /* Register the v4l2_device structure */
1508 dev->v4l2_dev.release = rtl2832_sdr_video_release;
1509 ret = v4l2_device_register(&dev->udev->dev, &dev->v4l2_dev);
1511 dev_err(&dev->udev->dev,
1512 "Failed to register v4l2-device (%d)\n", ret);
1513 goto err_free_controls;
1516 dev->v4l2_dev.ctrl_handler = &dev->hdl;
1517 dev->vdev.v4l2_dev = &dev->v4l2_dev;
1518 dev->vdev.lock = &dev->v4l2_lock;
1519 dev->vdev.vfl_dir = VFL_DIR_RX;
1521 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1);
1523 dev_err(&dev->udev->dev,
1524 "Failed to register as video device (%d)\n",
1526 goto err_unregister_v4l2_dev;
1528 dev_info(&dev->udev->dev, "Registered as %s\n",
1529 video_device_node_name(&dev->vdev));
1532 fe->ops.release_sec = rtl2832_sdr_release_sec;
1534 dev_info(&dev->i2c->dev, "%s: Realtek RTL2832 SDR attached\n",
1536 dev_notice(&dev->udev->dev,
1537 "%s: SDR API is still slightly experimental and functionality changes may follow\n",
1541 err_unregister_v4l2_dev:
1542 v4l2_device_unregister(&dev->v4l2_dev);
1544 v4l2_ctrl_handler_free(&dev->hdl);
1549 EXPORT_SYMBOL(rtl2832_sdr_attach);
1551 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1552 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver");
1553 MODULE_LICENSE("GPL");