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[media] v4l: videodev2: add buffer size to SDR format
[linux-2.6-block.git] / drivers / media / dvb-frontends / rtl2832_sdr.c
CommitLineData
77113892
AP		 1/*
2 * Realtek RTL2832U SDR driver
3 *
4 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
5 *
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.
10 *
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.
15 *
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.
19 *
20 * GNU Radio plugin "gr-kernel" for device usage will be on:
21 * http://git.linuxtv.org/anttip/gr-kernel.git
22 *
23 */
24
25#include "dvb_frontend.h"
26#include "rtl2832_sdr.h"
27#include "dvb_usb.h"
28
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>
34
35#include <linux/jiffies.h>
36#include <linux/math64.h>
37
2970c0d5
AP		 38static bool rtl2832_sdr_emulated_fmt;
39module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644);
40MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
41
77113892
AP		 42#define MAX_BULK_BUFS (10)
43#define BULK_BUFFER_SIZE (128 * 512)
44
45static const struct v4l2_frequency_band bands_adc[] = {
46 {
47 .tuner = 0,
48 .type = V4L2_TUNER_ADC,
49 .index = 0,
50 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
51 .rangelow = 300000,
52 .rangehigh = 300000,
53 },
54 {
55 .tuner = 0,
56 .type = V4L2_TUNER_ADC,
57 .index = 1,
58 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
59 .rangelow = 900001,
60 .rangehigh = 2800000,
61 },
62 {
63 .tuner = 0,
64 .type = V4L2_TUNER_ADC,
65 .index = 2,
66 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
67 .rangelow = 3200000,
68 .rangehigh = 3200000,
69 },
70};
71
72static const struct v4l2_frequency_band bands_fm[] = {
73 {
74 .tuner = 1,
75 .type = V4L2_TUNER_RF,
76 .index = 0,
77 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
78 .rangelow = 50000000,
79 .rangehigh = 2000000000,
80 },
81};
82
83/* stream formats */
84struct rtl2832_sdr_format {
85 char *name;
86 u32 pixelformat;
87};
88
89static struct rtl2832_sdr_format formats[] = {
90 {
2970c0d5 91 .name = "Complex U8",
77113892
AP		 92 .pixelformat = V4L2_SDR_FMT_CU8,
93 }, {
2970c0d5 94 .name = "Complex U16LE (emulated)",
77113892
AP		 95 .pixelformat = V4L2_SDR_FMT_CU16LE,
96 },
97};
98
99static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
100
101/* intermediate buffers with raw data from the USB device */
102struct rtl2832_sdr_frame_buf {
103 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */
104 struct list_head list;
105};
106
107struct rtl2832_sdr_state {
108#define POWER_ON (1 << 1)
109#define URB_BUF (1 << 2)
110 unsigned long flags;
111
112 const struct rtl2832_config *cfg;
113 struct dvb_frontend *fe;
114 struct dvb_usb_device *d;
115 struct i2c_adapter *i2c;
116 u8 bank;
117
118 struct video_device vdev;
119 struct v4l2_device v4l2_dev;
120
121 /* videobuf2 queue and queued buffers list */
122 struct vb2_queue vb_queue;
123 struct list_head queued_bufs;
124 spinlock_t queued_bufs_lock; /* Protects queued_bufs */
bc908754 125 unsigned sequence; /* buffer sequence counter */
77113892
AP		 126
127 /* Note if taking both locks v4l2_lock must always be locked first! */
128 struct mutex v4l2_lock; /* Protects everything else */
129 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
130
131 /* Pointer to our usb_device, will be NULL after unplug */
132 struct usb_device *udev; /* Both mutexes most be hold when setting! */
133
134 unsigned int vb_full; /* vb is full and packets dropped */
135
136 struct urb *urb_list[MAX_BULK_BUFS];
137 int buf_num;
138 unsigned long buf_size;
139 u8 *buf_list[MAX_BULK_BUFS];
140 dma_addr_t dma_addr[MAX_BULK_BUFS];
141 int urbs_initialized;
142 int urbs_submitted;
143
144 unsigned int f_adc, f_tuner;
145 u32 pixelformat;
2970c0d5 146 unsigned int num_formats;
77113892
AP		 147
148 /* Controls */
149 struct v4l2_ctrl_handler hdl;
150 struct v4l2_ctrl *bandwidth_auto;
151 struct v4l2_ctrl *bandwidth;
152
153 /* for sample rate calc */
154 unsigned int sample;
155 unsigned int sample_measured;
156 unsigned long jiffies_next;
157};
158
159/* write multiple hardware registers */
160static int rtl2832_sdr_wr(struct rtl2832_sdr_state *s, u8 reg, const u8 *val,
161 int len)
162{
163 int ret;
02b72200
AP		 164#define MAX_WR_LEN 24
165#define MAX_WR_XFER_LEN (MAX_WR_LEN + 1)
166 u8 buf[MAX_WR_XFER_LEN];
77113892
AP		 167 struct i2c_msg msg[1] = {
168 {
169 .addr = s->cfg->i2c_addr,
170 .flags = 0,
171 .len = 1 + len,
172 .buf = buf,
173 }
174 };
175
02b72200
AP		 176 if (WARN_ON(len > MAX_WR_LEN))
177 return -EINVAL;
178
77113892
AP		 179 buf[0] = reg;
180 memcpy(&buf[1], val, len);
181
182 ret = i2c_transfer(s->i2c, msg, 1);
183 if (ret == 1) {
184 ret = 0;
185 } else {
186 dev_err(&s->i2c->dev,
187 "%s: I2C wr failed=%d reg=%02x len=%d\n",
188 KBUILD_MODNAME, ret, reg, len);
189 ret = -EREMOTEIO;
190 }
191 return ret;
192}
193
194/* read multiple hardware registers */
195static int rtl2832_sdr_rd(struct rtl2832_sdr_state *s, u8 reg, u8 *val, int len)
196{
197 int ret;
198 struct i2c_msg msg[2] = {
199 {
200 .addr = s->cfg->i2c_addr,
201 .flags = 0,
202 .len = 1,
203 .buf = &reg,
204 }, {
205 .addr = s->cfg->i2c_addr,
206 .flags = I2C_M_RD,
207 .len = len,
208 .buf = val,
209 }
210 };
211
212 ret = i2c_transfer(s->i2c, msg, 2);
213 if (ret == 2) {
214 ret = 0;
215 } else {
216 dev_err(&s->i2c->dev,
217 "%s: I2C rd failed=%d reg=%02x len=%d\n",
218 KBUILD_MODNAME, ret, reg, len);
219 ret = -EREMOTEIO;
220 }
221 return ret;
222}
223
224/* write multiple registers */
225static int rtl2832_sdr_wr_regs(struct rtl2832_sdr_state *s, u16 reg,
226 const u8 *val, int len)
227{
228 int ret;
229 u8 reg2 = (reg >> 0) & 0xff;
230 u8 bank = (reg >> 8) & 0xff;
231
232 /* switch bank if needed */
233 if (bank != s->bank) {
234 ret = rtl2832_sdr_wr(s, 0x00, &bank, 1);
235 if (ret)
236 return ret;
237
238 s->bank = bank;
239 }
240
241 return rtl2832_sdr_wr(s, reg2, val, len);
242}
243
244/* read multiple registers */
245static int rtl2832_sdr_rd_regs(struct rtl2832_sdr_state *s, u16 reg, u8 *val,
246 int len)
247{
248 int ret;
249 u8 reg2 = (reg >> 0) & 0xff;
250 u8 bank = (reg >> 8) & 0xff;
251
252 /* switch bank if needed */
253 if (bank != s->bank) {
254 ret = rtl2832_sdr_wr(s, 0x00, &bank, 1);
255 if (ret)
256 return ret;
257
258 s->bank = bank;
259 }
260
261 return rtl2832_sdr_rd(s, reg2, val, len);
262}
263
264/* write single register */
265static int rtl2832_sdr_wr_reg(struct rtl2832_sdr_state *s, u16 reg, u8 val)
266{
267 return rtl2832_sdr_wr_regs(s, reg, &val, 1);
268}
269
270#if 0
271/* read single register */
272static int rtl2832_sdr_rd_reg(struct rtl2832_sdr_state *s, u16 reg, u8 *val)
273{
274 return rtl2832_sdr_rd_regs(s, reg, val, 1);
275}
276#endif
277
278/* write single register with mask */
279static int rtl2832_sdr_wr_reg_mask(struct rtl2832_sdr_state *s, u16 reg,
280 u8 val, u8 mask)
281{
282 int ret;
283 u8 tmp;
284
285 /* no need for read if whole reg is written */
286 if (mask != 0xff) {
287 ret = rtl2832_sdr_rd_regs(s, reg, &tmp, 1);
288 if (ret)
289 return ret;
290
291 val &= mask;
292 tmp &= ~mask;
293 val |= tmp;
294 }
295
296 return rtl2832_sdr_wr_regs(s, reg, &val, 1);
297}
298
299#if 0
300/* read single register with mask */
301static int rtl2832_sdr_rd_reg_mask(struct rtl2832_sdr_state *s, u16 reg,
302 u8 *val, u8 mask)
303{
304 int ret, i;
305 u8 tmp;
306
307 ret = rtl2832_sdr_rd_regs(s, reg, &tmp, 1);
308 if (ret)
309 return ret;
310
311 tmp &= mask;
312
313 /* find position of the first bit */
314 for (i = 0; i < 8; i++) {
315 if ((mask >> i) & 0x01)
316 break;
317 }
318 *val = tmp >> i;
319
320 return 0;
321}
322#endif
323
324/* Private functions */
325static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf(
326 struct rtl2832_sdr_state *s)
327{
328 unsigned long flags = 0;
329 struct rtl2832_sdr_frame_buf *buf = NULL;
330
331 spin_lock_irqsave(&s->queued_bufs_lock, flags);
332 if (list_empty(&s->queued_bufs))
333 goto leave;
334
335 buf = list_entry(s->queued_bufs.next,
336 struct rtl2832_sdr_frame_buf, list);
337 list_del(&buf->list);
338leave:
339 spin_unlock_irqrestore(&s->queued_bufs_lock, flags);
340 return buf;
341}
342
343static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_state *s,
344 void *dst, const u8 *src, unsigned int src_len)
345{
346 unsigned int dst_len;
347
348 if (s->pixelformat == V4L2_SDR_FMT_CU8) {
349 /* native stream, no need to convert */
350 memcpy(dst, src, src_len);
351 dst_len = src_len;
352 } else if (s->pixelformat == V4L2_SDR_FMT_CU16LE) {
353 /* convert u8 to u16 */
354 unsigned int i;
355 u16 *u16dst = dst;
941a8204 356
77113892
AP		 357 for (i = 0; i < src_len; i++)
358 *u16dst++ = (src[i] << 8) | (src[i] >> 0);
359 dst_len = 2 * src_len;
360 } else {
361 dst_len = 0;
362 }
363
364 /* calculate samping rate and output it in 10 seconds intervals */
365 if (unlikely(time_is_before_jiffies(s->jiffies_next))) {
366#define MSECS 10000UL
367 unsigned int samples = s->sample - s->sample_measured;
941a8204 368
77113892
AP		 369 s->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
370 s->sample_measured = s->sample;
371 dev_dbg(&s->udev->dev,
372 "slen=%d samples=%u msecs=%lu sampling rate=%lu\n",
373 src_len, samples, MSECS,
374 samples * 1000UL / MSECS);
375 }
376
377 /* total number of I+Q pairs */
378 s->sample += src_len / 2;
379
380 return dst_len;
381}
382
383/*
384 * This gets called for the bulk stream pipe. This is done in interrupt
385 * time, so it has to be fast, not crash, and not stall. Neat.
386 */
387static void rtl2832_sdr_urb_complete(struct urb *urb)
388{
389 struct rtl2832_sdr_state *s = urb->context;
390 struct rtl2832_sdr_frame_buf *fbuf;
391
392 dev_dbg_ratelimited(&s->udev->dev,
393 "%s: status=%d length=%d/%d errors=%d\n",
394 __func__, urb->status, urb->actual_length,
395 urb->transfer_buffer_length, urb->error_count);
396
397 switch (urb->status) {
398 case 0: /* success */
399 case -ETIMEDOUT: /* NAK */
400 break;
401 case -ECONNRESET: /* kill */
402 case -ENOENT:
403 case -ESHUTDOWN:
404 return;
405 default: /* error */
406 dev_err_ratelimited(&s->udev->dev, "urb failed=%d\n",
407 urb->status);
408 break;
409 }
410
411 if (likely(urb->actual_length > 0)) {
412 void *ptr;
413 unsigned int len;
414 /* get free framebuffer */
415 fbuf = rtl2832_sdr_get_next_fill_buf(s);
416 if (unlikely(fbuf == NULL)) {
417 s->vb_full++;
418 dev_notice_ratelimited(&s->udev->dev,
419 "videobuf is full, %d packets dropped\n",
420 s->vb_full);
421 goto skip;
422 }
423
424 /* fill framebuffer */
425 ptr = vb2_plane_vaddr(&fbuf->vb, 0);
426 len = rtl2832_sdr_convert_stream(s, ptr, urb->transfer_buffer,
427 urb->actual_length);
428 vb2_set_plane_payload(&fbuf->vb, 0, len);
bc908754
HV		 429 v4l2_get_timestamp(&fbuf->vb.v4l2_buf.timestamp);
430 fbuf->vb.v4l2_buf.sequence = s->sequence++;
77113892
AP		 431 vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE);
432 }
433skip:
434 usb_submit_urb(urb, GFP_ATOMIC);
435}
436
437static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_state *s)
438{
439 int i;
440
441 for (i = s->urbs_submitted - 1; i >= 0; i--) {
442 dev_dbg(&s->udev->dev, "%s: kill urb=%d\n", __func__, i);
443 /* stop the URB */
444 usb_kill_urb(s->urb_list[i]);
445 }
446 s->urbs_submitted = 0;
447
448 return 0;
449}
450
451static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_state *s)
452{
453 int i, ret;
454
455 for (i = 0; i < s->urbs_initialized; i++) {
456 dev_dbg(&s->udev->dev, "%s: submit urb=%d\n", __func__, i);
457 ret = usb_submit_urb(s->urb_list[i], GFP_ATOMIC);
458 if (ret) {
459 dev_err(&s->udev->dev,
460 "Could not submit urb no. %d - get them all back\n",
461 i);
462 rtl2832_sdr_kill_urbs(s);
463 return ret;
464 }
465 s->urbs_submitted++;
466 }
467
468 return 0;
469}
470
471static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_state *s)
472{
473 if (s->flags & USB_STATE_URB_BUF) {
474 while (s->buf_num) {
475 s->buf_num--;
476 dev_dbg(&s->udev->dev, "%s: free buf=%d\n",
477 __func__, s->buf_num);
478 usb_free_coherent(s->udev, s->buf_size,
479 s->buf_list[s->buf_num],
480 s->dma_addr[s->buf_num]);
481 }
482 }
483 s->flags &= ~USB_STATE_URB_BUF;
484
485 return 0;
486}
487
488static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_state *s)
489{
490 s->buf_num = 0;
491 s->buf_size = BULK_BUFFER_SIZE;
492
493 dev_dbg(&s->udev->dev,
494 "%s: all in all I will use %u bytes for streaming\n",
495 __func__, MAX_BULK_BUFS * BULK_BUFFER_SIZE);
496
497 for (s->buf_num = 0; s->buf_num < MAX_BULK_BUFS; s->buf_num++) {
498 s->buf_list[s->buf_num] = usb_alloc_coherent(s->udev,
499 BULK_BUFFER_SIZE, GFP_ATOMIC,
500 &s->dma_addr[s->buf_num]);
501 if (!s->buf_list[s->buf_num]) {
502 dev_dbg(&s->udev->dev, "%s: alloc buf=%d failed\n",
503 __func__, s->buf_num);
504 rtl2832_sdr_free_stream_bufs(s);
505 return -ENOMEM;
506 }
507
508 dev_dbg(&s->udev->dev, "%s: alloc buf=%d %p (dma %llu)\n",
509 __func__, s->buf_num,
510 s->buf_list[s->buf_num],
511 (long long)s->dma_addr[s->buf_num]);
512 s->flags |= USB_STATE_URB_BUF;
513 }
514
515 return 0;
516}
517
518static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_state *s)
519{
520 int i;
521
522 rtl2832_sdr_kill_urbs(s);
523
524 for (i = s->urbs_initialized - 1; i >= 0; i--) {
525 if (s->urb_list[i]) {
526 dev_dbg(&s->udev->dev, "%s: free urb=%d\n",
527 __func__, i);
528 /* free the URBs */
529 usb_free_urb(s->urb_list[i]);
530 }
531 }
532 s->urbs_initialized = 0;
533
534 return 0;
535}
536
537static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_state *s)
538{
539 int i, j;
540
541 /* allocate the URBs */
542 for (i = 0; i < MAX_BULK_BUFS; i++) {
543 dev_dbg(&s->udev->dev, "%s: alloc urb=%d\n", __func__, i);
544 s->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
545 if (!s->urb_list[i]) {
546 dev_dbg(&s->udev->dev, "%s: failed\n", __func__);
547 for (j = 0; j < i; j++)
548 usb_free_urb(s->urb_list[j]);
549 return -ENOMEM;
550 }
551 usb_fill_bulk_urb(s->urb_list[i],
552 s->udev,
553 usb_rcvbulkpipe(s->udev, 0x81),
554 s->buf_list[i],
555 BULK_BUFFER_SIZE,
556 rtl2832_sdr_urb_complete, s);
557
558 s->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
559 s->urb_list[i]->transfer_dma = s->dma_addr[i];
560 s->urbs_initialized++;
561 }
562
563 return 0;
564}
565
566/* Must be called with vb_queue_lock hold */
567static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_state *s)
568{
569 unsigned long flags = 0;
941a8204 570
77113892
AP		 571 dev_dbg(&s->udev->dev, "%s:\n", __func__);
572
573 spin_lock_irqsave(&s->queued_bufs_lock, flags);
574 while (!list_empty(&s->queued_bufs)) {
575 struct rtl2832_sdr_frame_buf *buf;
941a8204 576
77113892
AP		 577 buf = list_entry(s->queued_bufs.next,
578 struct rtl2832_sdr_frame_buf, list);
579 list_del(&buf->list);
580 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
581 }
582 spin_unlock_irqrestore(&s->queued_bufs_lock, flags);
583}
584
585/* The user yanked out the cable... */
586static void rtl2832_sdr_release_sec(struct dvb_frontend *fe)
587{
588 struct rtl2832_sdr_state *s = fe->sec_priv;
941a8204 589
77113892
AP		 590 dev_dbg(&s->udev->dev, "%s:\n", __func__);
591
592 mutex_lock(&s->vb_queue_lock);
593 mutex_lock(&s->v4l2_lock);
594 /* No need to keep the urbs around after disconnection */
595 s->udev = NULL;
596
597 v4l2_device_disconnect(&s->v4l2_dev);
598 video_unregister_device(&s->vdev);
599 mutex_unlock(&s->v4l2_lock);
600 mutex_unlock(&s->vb_queue_lock);
601
602 v4l2_device_put(&s->v4l2_dev);
603
604 fe->sec_priv = NULL;
605}
606
607static int rtl2832_sdr_querycap(struct file *file, void *fh,
608 struct v4l2_capability *cap)
609{
610 struct rtl2832_sdr_state *s = video_drvdata(file);
941a8204 611
77113892
AP		 612 dev_dbg(&s->udev->dev, "%s:\n", __func__);
613
614 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
615 strlcpy(cap->card, s->vdev.name, sizeof(cap->card));
616 usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info));
617 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
618 V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
619 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
620 return 0;
621}
622
623/* Videobuf2 operations */
624static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
625 const struct v4l2_format *fmt, unsigned int *nbuffers,
626 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[])
627{
628 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vq);
941a8204 629
77113892
AP		 630 dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers);
631
bc908754
HV		 632 /* Need at least 8 buffers */
633 if (vq->num_buffers + *nbuffers < 8)
634 *nbuffers = 8 - vq->num_buffers;
77113892
AP		 635 *nplanes = 1;
636 /* 2 = max 16-bit sample returned */
637 sizes[0] = PAGE_ALIGN(BULK_BUFFER_SIZE * 2);
638 dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n",
639 __func__, *nbuffers, sizes[0]);
640 return 0;
641}
642
643static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb)
644{
645 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vb->vb2_queue);
646
647 /* Don't allow queing new buffers after device disconnection */
648 if (!s->udev)
649 return -ENODEV;
650
651 return 0;
652}
653
654static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb)
655{
656 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vb->vb2_queue);
657 struct rtl2832_sdr_frame_buf *buf =
658 container_of(vb, struct rtl2832_sdr_frame_buf, vb);
659 unsigned long flags = 0;
660
661 /* Check the device has not disconnected between prep and queuing */
662 if (!s->udev) {
663 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
664 return;
665 }
666
667 spin_lock_irqsave(&s->queued_bufs_lock, flags);
668 list_add_tail(&buf->list, &s->queued_bufs);
669 spin_unlock_irqrestore(&s->queued_bufs_lock, flags);
670}
671
672static int rtl2832_sdr_set_adc(struct rtl2832_sdr_state *s)
673{
674 struct dvb_frontend *fe = s->fe;
675 int ret;
676 unsigned int f_sr, f_if;
677 u8 buf[4], u8tmp1, u8tmp2;
678 u64 u64tmp;
679 u32 u32tmp;
941a8204 680
77113892
AP		 681 dev_dbg(&s->udev->dev, "%s: f_adc=%u\n", __func__, s->f_adc);
682
683 if (!test_bit(POWER_ON, &s->flags))
684 return 0;
685
686 if (s->f_adc == 0)
687 return 0;
688
689 f_sr = s->f_adc;
690
691 ret = rtl2832_sdr_wr_regs(s, 0x13e, "\x00\x00", 2);
692 if (ret)
693 goto err;
694
695 ret = rtl2832_sdr_wr_regs(s, 0x115, "\x00\x00\x00\x00", 4);
696 if (ret)
697 goto err;
698
699 /* get IF from tuner */
700 if (fe->ops.tuner_ops.get_if_frequency)
701 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if);
702 else
703 ret = -EINVAL;
704
705 if (ret)
706 goto err;
707
708 /* program IF */
709 u64tmp = f_if % s->cfg->xtal;
710 u64tmp *= 0x400000;
711 u64tmp = div_u64(u64tmp, s->cfg->xtal);
712 u64tmp = -u64tmp;
713 u32tmp = u64tmp & 0x3fffff;
714
715 dev_dbg(&s->udev->dev, "%s: f_if=%u if_ctl=%08x\n",
716 __func__, f_if, u32tmp);
717
718 buf[0] = (u32tmp >> 16) & 0xff;
719 buf[1] = (u32tmp >> 8) & 0xff;
720 buf[2] = (u32tmp >> 0) & 0xff;
721
722 ret = rtl2832_sdr_wr_regs(s, 0x119, buf, 3);
723 if (ret)
724 goto err;
725
726 /* BB / IF mode */
727 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */
728 if (f_if) {
729 u8tmp1 = 0x1a; /* disable Zero-IF */
730 u8tmp2 = 0x8d; /* enable ADC I */
731 } else {
732 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */
733 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */
734 }
735
736 ret = rtl2832_sdr_wr_reg(s, 0x1b1, u8tmp1);
737 if (ret)
738 goto err;
739
740 ret = rtl2832_sdr_wr_reg(s, 0x008, u8tmp2);
741 if (ret)
742 goto err;
743
744 ret = rtl2832_sdr_wr_reg(s, 0x006, 0x80);
745 if (ret)
746 goto err;
747
748 /* program sampling rate (resampling down) */
749 u32tmp = div_u64(s->cfg->xtal * 0x400000ULL, f_sr * 4U);
750 u32tmp <<= 2;
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(s, 0x19f, buf, 4);
756 if (ret)
757 goto err;
758
759 /* low-pass filter */
760 ret = rtl2832_sdr_wr_regs(s, 0x11c,
761 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5",
762 20);
763 if (ret)
764 goto err;
765
766 ret = rtl2832_sdr_wr_regs(s, 0x017, "\x11\x10", 2);
767 if (ret)
768 goto err;
769
770 /* mode */
771 ret = rtl2832_sdr_wr_regs(s, 0x019, "\x05", 1);
772 if (ret)
773 goto err;
774
775 ret = rtl2832_sdr_wr_regs(s, 0x01a, "\x1b\x16\x0d\x06\x01\xff", 6);
776 if (ret)
777 goto err;
778
779 /* FSM */
780 ret = rtl2832_sdr_wr_regs(s, 0x192, "\x00\xf0\x0f", 3);
781 if (ret)
782 goto err;
783
784 /* PID filter */
785 ret = rtl2832_sdr_wr_regs(s, 0x061, "\x60", 1);
786 if (ret)
787 goto err;
788
789 /* used RF tuner based settings */
790 switch (s->cfg->tuner) {
791 case RTL2832_TUNER_E4000:
792 ret = rtl2832_sdr_wr_regs(s, 0x112, "\x5a", 1);
793 ret = rtl2832_sdr_wr_regs(s, 0x102, "\x40", 1);
794 ret = rtl2832_sdr_wr_regs(s, 0x103, "\x5a", 1);
795 ret = rtl2832_sdr_wr_regs(s, 0x1c7, "\x30", 1);
796 ret = rtl2832_sdr_wr_regs(s, 0x104, "\xd0", 1);
797 ret = rtl2832_sdr_wr_regs(s, 0x105, "\xbe", 1);
798 ret = rtl2832_sdr_wr_regs(s, 0x1c8, "\x18", 1);
799 ret = rtl2832_sdr_wr_regs(s, 0x106, "\x35", 1);
800 ret = rtl2832_sdr_wr_regs(s, 0x1c9, "\x21", 1);
801 ret = rtl2832_sdr_wr_regs(s, 0x1ca, "\x21", 1);
802 ret = rtl2832_sdr_wr_regs(s, 0x1cb, "\x00", 1);
803 ret = rtl2832_sdr_wr_regs(s, 0x107, "\x40", 1);
804 ret = rtl2832_sdr_wr_regs(s, 0x1cd, "\x10", 1);
805 ret = rtl2832_sdr_wr_regs(s, 0x1ce, "\x10", 1);
806 ret = rtl2832_sdr_wr_regs(s, 0x108, "\x80", 1);
807 ret = rtl2832_sdr_wr_regs(s, 0x109, "\x7f", 1);
808 ret = rtl2832_sdr_wr_regs(s, 0x10a, "\x80", 1);
809 ret = rtl2832_sdr_wr_regs(s, 0x10b, "\x7f", 1);
810 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1);
811 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1);
812 ret = rtl2832_sdr_wr_regs(s, 0x011, "\xd4", 1);
813 ret = rtl2832_sdr_wr_regs(s, 0x1e5, "\xf0", 1);
814 ret = rtl2832_sdr_wr_regs(s, 0x1d9, "\x00", 1);
815 ret = rtl2832_sdr_wr_regs(s, 0x1db, "\x00", 1);
816 ret = rtl2832_sdr_wr_regs(s, 0x1dd, "\x14", 1);
817 ret = rtl2832_sdr_wr_regs(s, 0x1de, "\xec", 1);
818 ret = rtl2832_sdr_wr_regs(s, 0x1d8, "\x0c", 1);
819 ret = rtl2832_sdr_wr_regs(s, 0x1e6, "\x02", 1);
820 ret = rtl2832_sdr_wr_regs(s, 0x1d7, "\x09", 1);
821 ret = rtl2832_sdr_wr_regs(s, 0x00d, "\x83", 1);
822 ret = rtl2832_sdr_wr_regs(s, 0x010, "\x49", 1);
823 ret = rtl2832_sdr_wr_regs(s, 0x00d, "\x87", 1);
824 ret = rtl2832_sdr_wr_regs(s, 0x00d, "\x85", 1);
825 ret = rtl2832_sdr_wr_regs(s, 0x013, "\x02", 1);
826 break;
827 case RTL2832_TUNER_FC0012:
828 case RTL2832_TUNER_FC0013:
829 ret = rtl2832_sdr_wr_regs(s, 0x112, "\x5a", 1);
830 ret = rtl2832_sdr_wr_regs(s, 0x102, "\x40", 1);
831 ret = rtl2832_sdr_wr_regs(s, 0x103, "\x5a", 1);
832 ret = rtl2832_sdr_wr_regs(s, 0x1c7, "\x2c", 1);
833 ret = rtl2832_sdr_wr_regs(s, 0x104, "\xcc", 1);
834 ret = rtl2832_sdr_wr_regs(s, 0x105, "\xbe", 1);
835 ret = rtl2832_sdr_wr_regs(s, 0x1c8, "\x16", 1);
836 ret = rtl2832_sdr_wr_regs(s, 0x106, "\x35", 1);
837 ret = rtl2832_sdr_wr_regs(s, 0x1c9, "\x21", 1);
838 ret = rtl2832_sdr_wr_regs(s, 0x1ca, "\x21", 1);
839 ret = rtl2832_sdr_wr_regs(s, 0x1cb, "\x00", 1);
840 ret = rtl2832_sdr_wr_regs(s, 0x107, "\x40", 1);
841 ret = rtl2832_sdr_wr_regs(s, 0x1cd, "\x10", 1);
842 ret = rtl2832_sdr_wr_regs(s, 0x1ce, "\x10", 1);
843 ret = rtl2832_sdr_wr_regs(s, 0x108, "\x80", 1);
844 ret = rtl2832_sdr_wr_regs(s, 0x109, "\x7f", 1);
845 ret = rtl2832_sdr_wr_regs(s, 0x10a, "\x80", 1);
846 ret = rtl2832_sdr_wr_regs(s, 0x10b, "\x7f", 1);
847 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1);
848 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1);
849 ret = rtl2832_sdr_wr_regs(s, 0x011, "\xe9\xbf", 2);
850 ret = rtl2832_sdr_wr_regs(s, 0x1e5, "\xf0", 1);
851 ret = rtl2832_sdr_wr_regs(s, 0x1d9, "\x00", 1);
852 ret = rtl2832_sdr_wr_regs(s, 0x1db, "\x00", 1);
853 ret = rtl2832_sdr_wr_regs(s, 0x1dd, "\x11", 1);
854 ret = rtl2832_sdr_wr_regs(s, 0x1de, "\xef", 1);
855 ret = rtl2832_sdr_wr_regs(s, 0x1d8, "\x0c", 1);
856 ret = rtl2832_sdr_wr_regs(s, 0x1e6, "\x02", 1);
857 ret = rtl2832_sdr_wr_regs(s, 0x1d7, "\x09", 1);
858 break;
859 case RTL2832_TUNER_R820T:
860 ret = rtl2832_sdr_wr_regs(s, 0x112, "\x5a", 1);
861 ret = rtl2832_sdr_wr_regs(s, 0x102, "\x40", 1);
862 ret = rtl2832_sdr_wr_regs(s, 0x115, "\x01", 1);
863 ret = rtl2832_sdr_wr_regs(s, 0x103, "\x80", 1);
864 ret = rtl2832_sdr_wr_regs(s, 0x1c7, "\x24", 1);
865 ret = rtl2832_sdr_wr_regs(s, 0x104, "\xcc", 1);
866 ret = rtl2832_sdr_wr_regs(s, 0x105, "\xbe", 1);
867 ret = rtl2832_sdr_wr_regs(s, 0x1c8, "\x14", 1);
868 ret = rtl2832_sdr_wr_regs(s, 0x106, "\x35", 1);
869 ret = rtl2832_sdr_wr_regs(s, 0x1c9, "\x21", 1);
870 ret = rtl2832_sdr_wr_regs(s, 0x1ca, "\x21", 1);
871 ret = rtl2832_sdr_wr_regs(s, 0x1cb, "\x00", 1);
872 ret = rtl2832_sdr_wr_regs(s, 0x107, "\x40", 1);
873 ret = rtl2832_sdr_wr_regs(s, 0x1cd, "\x10", 1);
874 ret = rtl2832_sdr_wr_regs(s, 0x1ce, "\x10", 1);
875 ret = rtl2832_sdr_wr_regs(s, 0x108, "\x80", 1);
876 ret = rtl2832_sdr_wr_regs(s, 0x109, "\x7f", 1);
877 ret = rtl2832_sdr_wr_regs(s, 0x10a, "\x80", 1);
878 ret = rtl2832_sdr_wr_regs(s, 0x10b, "\x7f", 1);
879 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1);
880 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1);
881 ret = rtl2832_sdr_wr_regs(s, 0x011, "\xf4", 1);
882 break;
883 default:
884 dev_notice(&s->udev->dev, "Unsupported tuner\n");
885 }
886
887 /* software reset */
888 ret = rtl2832_sdr_wr_reg_mask(s, 0x101, 0x04, 0x04);
889 if (ret)
890 goto err;
891
892 ret = rtl2832_sdr_wr_reg_mask(s, 0x101, 0x00, 0x04);
893 if (ret)
894 goto err;
895err:
896 return ret;
897};
898
899static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_state *s)
900{
901 int ret;
902
903 dev_dbg(&s->udev->dev, "%s:\n", __func__);
904
905 /* PID filter */
906 ret = rtl2832_sdr_wr_regs(s, 0x061, "\xe0", 1);
907 if (ret)
908 goto err;
909
910 /* mode */
911 ret = rtl2832_sdr_wr_regs(s, 0x019, "\x20", 1);
912 if (ret)
913 goto err;
914
915 ret = rtl2832_sdr_wr_regs(s, 0x017, "\x11\x10", 2);
916 if (ret)
917 goto err;
918
919 /* FSM */
920 ret = rtl2832_sdr_wr_regs(s, 0x192, "\x00\x0f\xff", 3);
921 if (ret)
922 goto err;
923
924 ret = rtl2832_sdr_wr_regs(s, 0x13e, "\x40\x00", 2);
925 if (ret)
926 goto err;
927
928 ret = rtl2832_sdr_wr_regs(s, 0x115, "\x06\x3f\xce\xcc", 4);
929 if (ret)
930 goto err;
931err:
932 return;
933};
934
935static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_state *s)
936{
937 struct dvb_frontend *fe = s->fe;
938 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
939 struct v4l2_ctrl *bandwidth_auto;
940 struct v4l2_ctrl *bandwidth;
941
942 /*
943 * tuner RF (Hz)
944 */
945 if (s->f_tuner == 0)
946 return 0;
947
948 /*
949 * bandwidth (Hz)
950 */
85594960
AD		 951 bandwidth_auto = v4l2_ctrl_find(&s->hdl,
952 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO);
77113892
AP		 953 bandwidth = v4l2_ctrl_find(&s->hdl, V4L2_CID_RF_TUNER_BANDWIDTH);
954 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) {
955 c->bandwidth_hz = s->f_adc;
956 v4l2_ctrl_s_ctrl(bandwidth, s->f_adc);
957 } else {
958 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth);
959 }
960
961 c->frequency = s->f_tuner;
962 c->delivery_system = SYS_DVBT;
963
964 dev_dbg(&s->udev->dev, "%s: frequency=%u bandwidth=%d\n",
965 __func__, c->frequency, c->bandwidth_hz);
966
967 if (!test_bit(POWER_ON, &s->flags))
968 return 0;
969
970 if (fe->ops.tuner_ops.set_params)
971 fe->ops.tuner_ops.set_params(fe);
972
973 return 0;
974};
975
976static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_state *s)
977{
978 struct dvb_frontend *fe = s->fe;
979
980 dev_dbg(&s->udev->dev, "%s:\n", __func__);
981
982 if (fe->ops.tuner_ops.init)
983 fe->ops.tuner_ops.init(fe);
984
985 return 0;
986};
987
988static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_state *s)
989{
990 struct dvb_frontend *fe = s->fe;
991
992 dev_dbg(&s->udev->dev, "%s:\n", __func__);
993
994 if (fe->ops.tuner_ops.sleep)
995 fe->ops.tuner_ops.sleep(fe);
996
997 return;
998};
999
1000static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count)
1001{
1002 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vq);
1003 int ret;
941a8204 1004
77113892
AP		 1005 dev_dbg(&s->udev->dev, "%s:\n", __func__);
1006
1007 if (!s->udev)
1008 return -ENODEV;
1009
1010 if (mutex_lock_interruptible(&s->v4l2_lock))
1011 return -ERESTARTSYS;
1012
1013 if (s->d->props->power_ctrl)
1014 s->d->props->power_ctrl(s->d, 1);
1015
1016 set_bit(POWER_ON, &s->flags);
1017
1018 ret = rtl2832_sdr_set_tuner(s);
1019 if (ret)
1020 goto err;
1021
1022 ret = rtl2832_sdr_set_tuner_freq(s);
1023 if (ret)
1024 goto err;
1025
1026 ret = rtl2832_sdr_set_adc(s);
1027 if (ret)
1028 goto err;
1029
1030 ret = rtl2832_sdr_alloc_stream_bufs(s);
1031 if (ret)
1032 goto err;
1033
1034 ret = rtl2832_sdr_alloc_urbs(s);
1035 if (ret)
1036 goto err;
1037
bc908754
HV		 1038 s->sequence = 0;
1039
77113892
AP		 1040 ret = rtl2832_sdr_submit_urbs(s);
1041 if (ret)
1042 goto err;
1043
1044err:
1045 mutex_unlock(&s->v4l2_lock);
1046
1047 return ret;
1048}
1049
e37559b2 1050static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq)
77113892
AP		 1051{
1052 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vq);
941a8204 1053
77113892
AP		 1054 dev_dbg(&s->udev->dev, "%s:\n", __func__);
1055
e37559b2 1056 mutex_lock(&s->v4l2_lock);
77113892
AP		 1057
1058 rtl2832_sdr_kill_urbs(s);
1059 rtl2832_sdr_free_urbs(s);
1060 rtl2832_sdr_free_stream_bufs(s);
1061 rtl2832_sdr_cleanup_queued_bufs(s);
1062 rtl2832_sdr_unset_adc(s);
1063 rtl2832_sdr_unset_tuner(s);
1064
1065 clear_bit(POWER_ON, &s->flags);
1066
1067 if (s->d->props->power_ctrl)
1068 s->d->props->power_ctrl(s->d, 0);
1069
1070 mutex_unlock(&s->v4l2_lock);
77113892
AP		 1071}
1072
1073static struct vb2_ops rtl2832_sdr_vb2_ops = {
1074 .queue_setup = rtl2832_sdr_queue_setup,
1075 .buf_prepare = rtl2832_sdr_buf_prepare,
1076 .buf_queue = rtl2832_sdr_buf_queue,
1077 .start_streaming = rtl2832_sdr_start_streaming,
1078 .stop_streaming = rtl2832_sdr_stop_streaming,
1079 .wait_prepare = vb2_ops_wait_prepare,
1080 .wait_finish = vb2_ops_wait_finish,
1081};
1082
1083static int rtl2832_sdr_g_tuner(struct file *file, void *priv,
1084 struct v4l2_tuner *v)
1085{
1086 struct rtl2832_sdr_state *s = video_drvdata(file);
941a8204 1087
77113892
AP		 1088 dev_dbg(&s->udev->dev, "%s: index=%d type=%d\n",
1089 __func__, v->index, v->type);
1090
1091 if (v->index == 0) {
1092 strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
1093 v->type = V4L2_TUNER_ADC;
1094 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
1095 v->rangelow = 300000;
1096 v->rangehigh = 3200000;
1097 } else if (v->index == 1) {
1098 strlcpy(v->name, "RF: <unknown>", sizeof(v->name));
1099 v->type = V4L2_TUNER_RF;
1100 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
1101 v->rangelow = 50000000;
1102 v->rangehigh = 2000000000;
1103 } else {
1104 return -EINVAL;
1105 }
1106
1107 return 0;
1108}
1109
1110static int rtl2832_sdr_s_tuner(struct file *file, void *priv,
1111 const struct v4l2_tuner *v)
1112{
1113 struct rtl2832_sdr_state *s = video_drvdata(file);
941a8204 1114
77113892
AP		 1115 dev_dbg(&s->udev->dev, "%s:\n", __func__);
1116
bc908754
HV		 1117 if (v->index > 1)
1118 return -EINVAL;
77113892
AP		 1119 return 0;
1120}
1121
1122static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv,
1123 struct v4l2_frequency_band *band)
1124{
1125 struct rtl2832_sdr_state *s = video_drvdata(file);
941a8204 1126
77113892
AP		 1127 dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d index=%d\n",
1128 __func__, band->tuner, band->type, band->index);
1129
1130 if (band->tuner == 0) {
1131 if (band->index >= ARRAY_SIZE(bands_adc))
1132 return -EINVAL;
1133
1134 *band = bands_adc[band->index];
1135 } else if (band->tuner == 1) {
1136 if (band->index >= ARRAY_SIZE(bands_fm))
1137 return -EINVAL;
1138
1139 *band = bands_fm[band->index];
1140 } else {
1141 return -EINVAL;
1142 }
1143
1144 return 0;
1145}
1146
1147static int rtl2832_sdr_g_frequency(struct file *file, void *priv,
1148 struct v4l2_frequency *f)
1149{
1150 struct rtl2832_sdr_state *s = video_drvdata(file);
1151 int ret = 0;
941a8204 1152
77113892
AP		 1153 dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d\n",
1154 __func__, f->tuner, f->type);
1155
bc908754 1156 if (f->tuner == 0) {
77113892 1157 f->frequency = s->f_adc;
bc908754
HV		 1158 f->type = V4L2_TUNER_ADC;
1159 } else if (f->tuner == 1) {
77113892 1160 f->frequency = s->f_tuner;
bc908754
HV		 1161 f->type = V4L2_TUNER_RF;
1162 } else {
77113892 1163 return -EINVAL;
bc908754 1164 }
77113892
AP		 1165
1166 return ret;
1167}
1168
1169static int rtl2832_sdr_s_frequency(struct file *file, void *priv,
1170 const struct v4l2_frequency *f)
1171{
1172 struct rtl2832_sdr_state *s = video_drvdata(file);
1173 int ret, band;
1174
1175 dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d frequency=%u\n",
1176 __func__, f->tuner, f->type, f->frequency);
1177
1178 /* ADC band midpoints */
1179 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2)
1180 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2)
1181
1182 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) {
1183 if (f->frequency < BAND_ADC_0)
1184 band = 0;
1185 else if (f->frequency < BAND_ADC_1)
1186 band = 1;
1187 else
1188 band = 2;
1189
1190 s->f_adc = clamp_t(unsigned int, f->frequency,
1191 bands_adc[band].rangelow,
1192 bands_adc[band].rangehigh);
1193
1194 dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n",
1195 __func__, s->f_adc);
1196 ret = rtl2832_sdr_set_adc(s);
1197 } else if (f->tuner == 1) {
bc908754
HV		 1198 s->f_tuner = clamp_t(unsigned int, f->frequency,
1199 bands_fm[0].rangelow,
1200 bands_fm[0].rangehigh);
77113892
AP		 1201 dev_dbg(&s->udev->dev, "%s: RF frequency=%u Hz\n",
1202 __func__, f->frequency);
1203
1204 ret = rtl2832_sdr_set_tuner_freq(s);
1205 } else {
1206 ret = -EINVAL;
1207 }
1208
1209 return ret;
1210}
1211
1212static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,
1213 struct v4l2_fmtdesc *f)
1214{
1215 struct rtl2832_sdr_state *s = video_drvdata(file);
941a8204 1216
77113892
AP		 1217 dev_dbg(&s->udev->dev, "%s:\n", __func__);
1218
2970c0d5 1219 if (f->index >= s->num_formats)
77113892
AP		 1220 return -EINVAL;
1221
1222 strlcpy(f->description, formats[f->index].name, sizeof(f->description));
1223 f->pixelformat = formats[f->index].pixelformat;
1224
1225 return 0;
1226}
1227
1228static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv,
1229 struct v4l2_format *f)
1230{
1231 struct rtl2832_sdr_state *s = video_drvdata(file);
941a8204 1232
77113892
AP		 1233 dev_dbg(&s->udev->dev, "%s:\n", __func__);
1234
1235 f->fmt.sdr.pixelformat = s->pixelformat;
bc908754 1236 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
77113892
AP		 1237
1238 return 0;
1239}
1240
1241static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,
1242 struct v4l2_format *f)
1243{
1244 struct rtl2832_sdr_state *s = video_drvdata(file);
1245 struct vb2_queue *q = &s->vb_queue;
1246 int i;
941a8204 1247
77113892
AP		 1248 dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__,
1249 (char *)&f->fmt.sdr.pixelformat);
1250
1251 if (vb2_is_busy(q))
1252 return -EBUSY;
1253
bc908754 1254 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
2970c0d5 1255 for (i = 0; i < s->num_formats; i++) {
77113892
AP		 1256 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1257 s->pixelformat = f->fmt.sdr.pixelformat;
1258 return 0;
1259 }
1260 }
1261
1262 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1263 s->pixelformat = formats[0].pixelformat;
1264
1265 return 0;
1266}
1267
1268static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,
1269 struct v4l2_format *f)
1270{
1271 struct rtl2832_sdr_state *s = video_drvdata(file);
1272 int i;
941a8204 1273
77113892
AP		 1274 dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__,
1275 (char *)&f->fmt.sdr.pixelformat);
1276
bc908754 1277 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
2970c0d5 1278 for (i = 0; i < s->num_formats; i++) {
77113892
AP		 1279 if (formats[i].pixelformat == f->fmt.sdr.pixelformat)
1280 return 0;
1281 }
1282
1283 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1284
1285 return 0;
1286}
1287
1288static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = {
1289 .vidioc_querycap = rtl2832_sdr_querycap,
1290
1291 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap,
1292 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap,
1293 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap,
1294 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap,
1295
1296 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1297 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1298 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1299 .vidioc_querybuf = vb2_ioctl_querybuf,
1300 .vidioc_qbuf = vb2_ioctl_qbuf,
1301 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1302
1303 .vidioc_streamon = vb2_ioctl_streamon,
1304 .vidioc_streamoff = vb2_ioctl_streamoff,
1305
1306 .vidioc_g_tuner = rtl2832_sdr_g_tuner,
1307 .vidioc_s_tuner = rtl2832_sdr_s_tuner,
1308
1309 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands,
1310 .vidioc_g_frequency = rtl2832_sdr_g_frequency,
1311 .vidioc_s_frequency = rtl2832_sdr_s_frequency,
1312
1313 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1314 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1315 .vidioc_log_status = v4l2_ctrl_log_status,
1316};
1317
1318static const struct v4l2_file_operations rtl2832_sdr_fops = {
1319 .owner = THIS_MODULE,
1320 .open = v4l2_fh_open,
1321 .release = vb2_fop_release,
1322 .read = vb2_fop_read,
1323 .poll = vb2_fop_poll,
1324 .mmap = vb2_fop_mmap,
1325 .unlocked_ioctl = video_ioctl2,
1326};
1327
1328static struct video_device rtl2832_sdr_template = {
1329 .name = "Realtek RTL2832 SDR",
1330 .release = video_device_release_empty,
1331 .fops = &rtl2832_sdr_fops,
1332 .ioctl_ops = &rtl2832_sdr_ioctl_ops,
1333};
1334
1335static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
1336{
1337 struct rtl2832_sdr_state *s =
1338 container_of(ctrl->handler, struct rtl2832_sdr_state,
1339 hdl);
1340 struct dvb_frontend *fe = s->fe;
1341 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1342 int ret;
941a8204 1343
77113892 1344 dev_dbg(&s->udev->dev,
0ba2aeb6 1345 "%s: id=%d name=%s val=%d min=%lld max=%lld step=%lld\n",
77113892
AP		 1346 __func__, ctrl->id, ctrl->name, ctrl->val,
1347 ctrl->minimum, ctrl->maximum, ctrl->step);
1348
1349 switch (ctrl->id) {
1350 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
1351 case V4L2_CID_RF_TUNER_BANDWIDTH:
ea4d04f9
AP		 1352 /* TODO: these controls should be moved to tuner drivers */
1353 if (s->bandwidth_auto->val) {
1354 /* Round towards the closest legal value */
1355 s32 val = s->f_adc + s->bandwidth->step / 2;
1356 u32 offset;
941a8204 1357
0ba2aeb6
HV		 1358 val = clamp_t(s32, val, s->bandwidth->minimum,
1359 s->bandwidth->maximum);
ea4d04f9 1360 offset = val - s->bandwidth->minimum;
85594960
AD		 1361 offset = s->bandwidth->step *
1362 (offset / s->bandwidth->step);
ea4d04f9
AP		 1363 s->bandwidth->val = s->bandwidth->minimum + offset;
1364 }
77113892
AP		 1365
1366 c->bandwidth_hz = s->bandwidth->val;
1367
1368 if (!test_bit(POWER_ON, &s->flags))
1369 return 0;
1370
1371 if (fe->ops.tuner_ops.set_params)
1372 ret = fe->ops.tuner_ops.set_params(fe);
1373 else
1374 ret = 0;
1375 break;
1376 default:
1377 ret = -EINVAL;
1378 }
1379
1380 return ret;
1381}
1382
1383static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = {
1384 .s_ctrl = rtl2832_sdr_s_ctrl,
1385};
1386
1387static void rtl2832_sdr_video_release(struct v4l2_device *v)
1388{
1389 struct rtl2832_sdr_state *s =
1390 container_of(v, struct rtl2832_sdr_state, v4l2_dev);
1391
1392 v4l2_ctrl_handler_free(&s->hdl);
1393 v4l2_device_unregister(&s->v4l2_dev);
1394 kfree(s);
1395}
1396
1397struct dvb_frontend *rtl2832_sdr_attach(struct dvb_frontend *fe,
1398 struct i2c_adapter *i2c, const struct rtl2832_config *cfg,
1399 struct v4l2_subdev *sd)
1400{
1401 int ret;
1402 struct rtl2832_sdr_state *s;
1403 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops;
1404 struct dvb_usb_device *d = i2c_get_adapdata(i2c);
1405
1406 s = kzalloc(sizeof(struct rtl2832_sdr_state), GFP_KERNEL);
1407 if (s == NULL) {
1408 dev_err(&d->udev->dev,
1409 "Could not allocate memory for rtl2832_sdr_state\n");
1410 return NULL;
1411 }
1412
1413 /* setup the state */
1414 s->fe = fe;
1415 s->d = d;
1416 s->udev = d->udev;
1417 s->i2c = i2c;
1418 s->cfg = cfg;
1419 s->f_adc = bands_adc[0].rangelow;
bc908754 1420 s->f_tuner = bands_fm[0].rangelow;
77113892 1421 s->pixelformat = V4L2_SDR_FMT_CU8;
2970c0d5
AP		 1422 s->num_formats = NUM_FORMATS;
1423 if (rtl2832_sdr_emulated_fmt == false)
1424 s->num_formats -= 1;
77113892
AP		 1425
1426 mutex_init(&s->v4l2_lock);
1427 mutex_init(&s->vb_queue_lock);
1428 spin_lock_init(&s->queued_bufs_lock);
1429 INIT_LIST_HEAD(&s->queued_bufs);
1430
1431 /* Init videobuf2 queue structure */
1432 s->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;
1433 s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1434 s->vb_queue.drv_priv = s;
1435 s->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf);
1436 s->vb_queue.ops = &rtl2832_sdr_vb2_ops;
1437 s->vb_queue.mem_ops = &vb2_vmalloc_memops;
1438 s->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1439 ret = vb2_queue_init(&s->vb_queue);
1440 if (ret) {
1441 dev_err(&s->udev->dev, "Could not initialize vb2 queue\n");
1442 goto err_free_mem;
1443 }
1444
1445 /* Register controls */
1446 switch (s->cfg->tuner) {
1447 case RTL2832_TUNER_E4000:
09143009
AP		 1448 v4l2_ctrl_handler_init(&s->hdl, 9);
1449 if (sd)
1450 v4l2_ctrl_add_handler(&s->hdl, sd->ctrl_handler, NULL);
77113892
AP		 1451 break;
1452 case RTL2832_TUNER_R820T:
1453 v4l2_ctrl_handler_init(&s->hdl, 2);
85594960
AD		 1454 s->bandwidth_auto = v4l2_ctrl_new_std(&s->hdl, ops,
1455 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1456 0, 1, 1, 1);
1457 s->bandwidth = v4l2_ctrl_new_std(&s->hdl, ops,
1458 V4L2_CID_RF_TUNER_BANDWIDTH,
1459 0, 8000000, 100000, 0);
77113892
AP		 1460 v4l2_ctrl_auto_cluster(2, &s->bandwidth_auto, 0, false);
1461 break;
1462 case RTL2832_TUNER_FC0012:
1463 case RTL2832_TUNER_FC0013:
1464 v4l2_ctrl_handler_init(&s->hdl, 2);
85594960
AD		 1465 s->bandwidth_auto = v4l2_ctrl_new_std(&s->hdl, ops,
1466 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1467 0, 1, 1, 1);
1468 s->bandwidth = v4l2_ctrl_new_std(&s->hdl, ops,
1469 V4L2_CID_RF_TUNER_BANDWIDTH,
1470 6000000, 8000000, 1000000,
1471 6000000);
77113892
AP		 1472 v4l2_ctrl_auto_cluster(2, &s->bandwidth_auto, 0, false);
1473 break;
1474 default:
1475 v4l2_ctrl_handler_init(&s->hdl, 0);
1476 dev_notice(&s->udev->dev, "%s: Unsupported tuner\n",
1477 KBUILD_MODNAME);
1478 goto err_free_controls;
1479 }
1480
1481 if (s->hdl.error) {
1482 ret = s->hdl.error;
1483 dev_err(&s->udev->dev, "Could not initialize controls\n");
1484 goto err_free_controls;
1485 }
1486
1487 /* Init video_device structure */
1488 s->vdev = rtl2832_sdr_template;
1489 s->vdev.queue = &s->vb_queue;
1490 s->vdev.queue->lock = &s->vb_queue_lock;
77113892
AP		 1491 video_set_drvdata(&s->vdev, s);
1492
1493 /* Register the v4l2_device structure */
1494 s->v4l2_dev.release = rtl2832_sdr_video_release;
1495 ret = v4l2_device_register(&s->udev->dev, &s->v4l2_dev);
1496 if (ret) {
1497 dev_err(&s->udev->dev,
1498 "Failed to register v4l2-device (%d)\n", ret);
1499 goto err_free_controls;
1500 }
1501
1502 s->v4l2_dev.ctrl_handler = &s->hdl;
1503 s->vdev.v4l2_dev = &s->v4l2_dev;
1504 s->vdev.lock = &s->v4l2_lock;
1505 s->vdev.vfl_dir = VFL_DIR_RX;
1506
1507 ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1);
1508 if (ret) {
1509 dev_err(&s->udev->dev,
1510 "Failed to register as video device (%d)\n",
1511 ret);
1512 goto err_unregister_v4l2_dev;
1513 }
1514 dev_info(&s->udev->dev, "Registered as %s\n",
1515 video_device_node_name(&s->vdev));
1516
1517 fe->sec_priv = s;
1518 fe->ops.release_sec = rtl2832_sdr_release_sec;
1519
1520 dev_info(&s->i2c->dev, "%s: Realtek RTL2832 SDR attached\n",
1521 KBUILD_MODNAME);
624ce384
AP		 1522 dev_notice(&s->udev->dev,
1523 "%s: SDR API is still slightly experimental and functionality changes may follow\n",
1524 KBUILD_MODNAME);
77113892
AP		 1525 return fe;
1526
1527err_unregister_v4l2_dev:
1528 v4l2_device_unregister(&s->v4l2_dev);
1529err_free_controls:
1530 v4l2_ctrl_handler_free(&s->hdl);
1531err_free_mem:
1532 kfree(s);
1533 return NULL;
1534}
1535EXPORT_SYMBOL(rtl2832_sdr_attach);
1536
1537MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1538MODULE_DESCRIPTION("Realtek RTL2832 SDR driver");
1539MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)