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Merge branch 'stable/for-jens-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git...
[deliverable/linux.git] / drivers / media / dvb-frontends / rtl2832_sdr.c
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 "rtl2832_sdr.h"
26 #include "dvb_usb.h"
27
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-ioctl.h>
30 #include <media/v4l2-ctrls.h>
31 #include <media/v4l2-event.h>
32 #include <media/videobuf2-v4l2.h>
33 #include <media/videobuf2-vmalloc.h>
34
35 #include <linux/platform_device.h>
36 #include <linux/jiffies.h>
37 #include <linux/math64.h>
38 #include <linux/regmap.h>
39
40 static bool rtl2832_sdr_emulated_fmt;
41 module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644);
42 MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
43
44 /* Original macro does not contain enough null pointer checks for our need */
45 #define V4L2_SUBDEV_HAS_OP(sd, o, f) \
46 ((sd) && (sd)->ops && (sd)->ops->o && (sd)->ops->o->f)
47
48 #define MAX_BULK_BUFS (10)
49 #define BULK_BUFFER_SIZE (128 * 512)
50
51 static const struct v4l2_frequency_band bands_adc[] = {
52 {
53 .tuner = 0,
54 .type = V4L2_TUNER_ADC,
55 .index = 0,
56 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
57 .rangelow = 300000,
58 .rangehigh = 300000,
59 },
60 {
61 .tuner = 0,
62 .type = V4L2_TUNER_ADC,
63 .index = 1,
64 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
65 .rangelow = 900001,
66 .rangehigh = 2800000,
67 },
68 {
69 .tuner = 0,
70 .type = V4L2_TUNER_ADC,
71 .index = 2,
72 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
73 .rangelow = 3200000,
74 .rangehigh = 3200000,
75 },
76 };
77
78 static const struct v4l2_frequency_band bands_fm[] = {
79 {
80 .tuner = 1,
81 .type = V4L2_TUNER_RF,
82 .index = 0,
83 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
84 .rangelow = 50000000,
85 .rangehigh = 2000000000,
86 },
87 };
88
89 /* stream formats */
90 struct rtl2832_sdr_format {
91 char *name;
92 u32 pixelformat;
93 u32 buffersize;
94 };
95
96 static struct rtl2832_sdr_format formats[] = {
97 {
98 .name = "Complex U8",
99 .pixelformat = V4L2_SDR_FMT_CU8,
100 .buffersize = BULK_BUFFER_SIZE,
101 }, {
102 .name = "Complex U16LE (emulated)",
103 .pixelformat = V4L2_SDR_FMT_CU16LE,
104 .buffersize = BULK_BUFFER_SIZE * 2,
105 },
106 };
107
108 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
109
110 /* intermediate buffers with raw data from the USB device */
111 struct rtl2832_sdr_frame_buf {
112 /* common v4l buffer stuff -- must be first */
113 struct vb2_v4l2_buffer vb;
114 struct list_head list;
115 };
116
117 struct rtl2832_sdr_dev {
118 #define POWER_ON 0 /* BIT(0) */
119 #define URB_BUF 1 /* BIT(1) */
120 unsigned long flags;
121
122 struct platform_device *pdev;
123 struct regmap *regmap;
124
125 struct video_device vdev;
126 struct v4l2_device v4l2_dev;
127 struct v4l2_subdev *v4l2_subdev;
128
129 /* videobuf2 queue and queued buffers list */
130 struct vb2_queue vb_queue;
131 struct list_head queued_bufs;
132 spinlock_t queued_bufs_lock; /* Protects queued_bufs */
133 unsigned sequence; /* buffer sequence counter */
134
135 /* Note if taking both locks v4l2_lock must always be locked first! */
136 struct mutex v4l2_lock; /* Protects everything else */
137 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
138
139 /* Pointer to our usb_device, will be NULL after unplug */
140 struct usb_device *udev; /* Both mutexes most be hold when setting! */
141
142 unsigned int vb_full; /* vb is full and packets dropped */
143
144 struct urb *urb_list[MAX_BULK_BUFS];
145 int buf_num;
146 unsigned long buf_size;
147 u8 *buf_list[MAX_BULK_BUFS];
148 dma_addr_t dma_addr[MAX_BULK_BUFS];
149 int urbs_initialized;
150 int urbs_submitted;
151
152 unsigned int f_adc, f_tuner;
153 u32 pixelformat;
154 u32 buffersize;
155 unsigned int num_formats;
156
157 /* Controls */
158 struct v4l2_ctrl_handler hdl;
159 struct v4l2_ctrl *bandwidth_auto;
160 struct v4l2_ctrl *bandwidth;
161
162 /* for sample rate calc */
163 unsigned int sample;
164 unsigned int sample_measured;
165 unsigned long jiffies_next;
166 };
167
168 /* Private functions */
169 static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf(
170 struct rtl2832_sdr_dev *dev)
171 {
172 unsigned long flags;
173 struct rtl2832_sdr_frame_buf *buf = NULL;
174
175 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
176 if (list_empty(&dev->queued_bufs))
177 goto leave;
178
179 buf = list_entry(dev->queued_bufs.next,
180 struct rtl2832_sdr_frame_buf, list);
181 list_del(&buf->list);
182 leave:
183 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
184 return buf;
185 }
186
187 static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev,
188 void *dst, const u8 *src, unsigned int src_len)
189 {
190 struct platform_device *pdev = dev->pdev;
191 unsigned int dst_len;
192
193 if (dev->pixelformat == V4L2_SDR_FMT_CU8) {
194 /* native stream, no need to convert */
195 memcpy(dst, src, src_len);
196 dst_len = src_len;
197 } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) {
198 /* convert u8 to u16 */
199 unsigned int i;
200 u16 *u16dst = dst;
201
202 for (i = 0; i < src_len; i++)
203 *u16dst++ = (src[i] << 8) | (src[i] >> 0);
204 dst_len = 2 * src_len;
205 } else {
206 dst_len = 0;
207 }
208
209 /* calculate sample rate and output it in 10 seconds intervals */
210 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) {
211 #define MSECS 10000UL
212 unsigned int msecs = jiffies_to_msecs(jiffies -
213 dev->jiffies_next + msecs_to_jiffies(MSECS));
214 unsigned int samples = dev->sample - dev->sample_measured;
215
216 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
217 dev->sample_measured = dev->sample;
218 dev_dbg(&pdev->dev,
219 "slen=%u samples=%u msecs=%u sample rate=%lu\n",
220 src_len, samples, msecs, samples * 1000UL / msecs);
221 }
222
223 /* total number of I+Q pairs */
224 dev->sample += src_len / 2;
225
226 return dst_len;
227 }
228
229 /*
230 * This gets called for the bulk stream pipe. This is done in interrupt
231 * time, so it has to be fast, not crash, and not stall. Neat.
232 */
233 static void rtl2832_sdr_urb_complete(struct urb *urb)
234 {
235 struct rtl2832_sdr_dev *dev = urb->context;
236 struct platform_device *pdev = dev->pdev;
237 struct rtl2832_sdr_frame_buf *fbuf;
238
239 dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n",
240 urb->status, urb->actual_length,
241 urb->transfer_buffer_length, urb->error_count);
242
243 switch (urb->status) {
244 case 0: /* success */
245 case -ETIMEDOUT: /* NAK */
246 break;
247 case -ECONNRESET: /* kill */
248 case -ENOENT:
249 case -ESHUTDOWN:
250 return;
251 default: /* error */
252 dev_err_ratelimited(&pdev->dev, "urb failed=%d\n", urb->status);
253 break;
254 }
255
256 if (likely(urb->actual_length > 0)) {
257 void *ptr;
258 unsigned int len;
259 /* get free framebuffer */
260 fbuf = rtl2832_sdr_get_next_fill_buf(dev);
261 if (unlikely(fbuf == NULL)) {
262 dev->vb_full++;
263 dev_notice_ratelimited(&pdev->dev,
264 "videobuf is full, %d packets dropped\n",
265 dev->vb_full);
266 goto skip;
267 }
268
269 /* fill framebuffer */
270 ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0);
271 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer,
272 urb->actual_length);
273 vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, len);
274 fbuf->vb.vb2_buf.timestamp = ktime_get_ns();
275 fbuf->vb.sequence = dev->sequence++;
276 vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
277 }
278 skip:
279 usb_submit_urb(urb, GFP_ATOMIC);
280 }
281
282 static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev)
283 {
284 struct platform_device *pdev = dev->pdev;
285 int i;
286
287 for (i = dev->urbs_submitted - 1; i >= 0; i--) {
288 dev_dbg(&pdev->dev, "kill urb=%d\n", i);
289 /* stop the URB */
290 usb_kill_urb(dev->urb_list[i]);
291 }
292 dev->urbs_submitted = 0;
293
294 return 0;
295 }
296
297 static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev)
298 {
299 struct platform_device *pdev = dev->pdev;
300 int i, ret;
301
302 for (i = 0; i < dev->urbs_initialized; i++) {
303 dev_dbg(&pdev->dev, "submit urb=%d\n", i);
304 ret = usb_submit_urb(dev->urb_list[i], GFP_ATOMIC);
305 if (ret) {
306 dev_err(&pdev->dev,
307 "Could not submit urb no. %d - get them all back\n",
308 i);
309 rtl2832_sdr_kill_urbs(dev);
310 return ret;
311 }
312 dev->urbs_submitted++;
313 }
314
315 return 0;
316 }
317
318 static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev)
319 {
320 struct platform_device *pdev = dev->pdev;
321
322 if (test_bit(URB_BUF, &dev->flags)) {
323 while (dev->buf_num) {
324 dev->buf_num--;
325 dev_dbg(&pdev->dev, "free buf=%d\n", dev->buf_num);
326 usb_free_coherent(dev->udev, dev->buf_size,
327 dev->buf_list[dev->buf_num],
328 dev->dma_addr[dev->buf_num]);
329 }
330 }
331 clear_bit(URB_BUF, &dev->flags);
332
333 return 0;
334 }
335
336 static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev)
337 {
338 struct platform_device *pdev = dev->pdev;
339
340 dev->buf_num = 0;
341 dev->buf_size = BULK_BUFFER_SIZE;
342
343 dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n",
344 MAX_BULK_BUFS * BULK_BUFFER_SIZE);
345
346 for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) {
347 dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev,
348 BULK_BUFFER_SIZE, GFP_ATOMIC,
349 &dev->dma_addr[dev->buf_num]);
350 if (!dev->buf_list[dev->buf_num]) {
351 dev_dbg(&pdev->dev, "alloc buf=%d failed\n",
352 dev->buf_num);
353 rtl2832_sdr_free_stream_bufs(dev);
354 return -ENOMEM;
355 }
356
357 dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n",
358 dev->buf_num, dev->buf_list[dev->buf_num],
359 (long long)dev->dma_addr[dev->buf_num]);
360 set_bit(URB_BUF, &dev->flags);
361 }
362
363 return 0;
364 }
365
366 static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev)
367 {
368 struct platform_device *pdev = dev->pdev;
369 int i;
370
371 rtl2832_sdr_kill_urbs(dev);
372
373 for (i = dev->urbs_initialized - 1; i >= 0; i--) {
374 if (dev->urb_list[i]) {
375 dev_dbg(&pdev->dev, "free urb=%d\n", i);
376 /* free the URBs */
377 usb_free_urb(dev->urb_list[i]);
378 }
379 }
380 dev->urbs_initialized = 0;
381
382 return 0;
383 }
384
385 static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev)
386 {
387 struct platform_device *pdev = dev->pdev;
388 int i, j;
389
390 /* allocate the URBs */
391 for (i = 0; i < MAX_BULK_BUFS; i++) {
392 dev_dbg(&pdev->dev, "alloc urb=%d\n", i);
393 dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
394 if (!dev->urb_list[i]) {
395 dev_dbg(&pdev->dev, "failed\n");
396 for (j = 0; j < i; j++)
397 usb_free_urb(dev->urb_list[j]);
398 return -ENOMEM;
399 }
400 usb_fill_bulk_urb(dev->urb_list[i],
401 dev->udev,
402 usb_rcvbulkpipe(dev->udev, 0x81),
403 dev->buf_list[i],
404 BULK_BUFFER_SIZE,
405 rtl2832_sdr_urb_complete, dev);
406
407 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
408 dev->urb_list[i]->transfer_dma = dev->dma_addr[i];
409 dev->urbs_initialized++;
410 }
411
412 return 0;
413 }
414
415 /* Must be called with vb_queue_lock hold */
416 static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev)
417 {
418 struct platform_device *pdev = dev->pdev;
419 unsigned long flags;
420
421 dev_dbg(&pdev->dev, "\n");
422
423 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
424 while (!list_empty(&dev->queued_bufs)) {
425 struct rtl2832_sdr_frame_buf *buf;
426
427 buf = list_entry(dev->queued_bufs.next,
428 struct rtl2832_sdr_frame_buf, list);
429 list_del(&buf->list);
430 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
431 }
432 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
433 }
434
435 static int rtl2832_sdr_querycap(struct file *file, void *fh,
436 struct v4l2_capability *cap)
437 {
438 struct rtl2832_sdr_dev *dev = video_drvdata(file);
439 struct platform_device *pdev = dev->pdev;
440
441 dev_dbg(&pdev->dev, "\n");
442
443 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
444 strlcpy(cap->card, dev->vdev.name, sizeof(cap->card));
445 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
446 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
447 V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
448 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
449 return 0;
450 }
451
452 /* Videobuf2 operations */
453 static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
454 unsigned int *nbuffers,
455 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[])
456 {
457 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
458 struct platform_device *pdev = dev->pdev;
459
460 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
461
462 /* Need at least 8 buffers */
463 if (vq->num_buffers + *nbuffers < 8)
464 *nbuffers = 8 - vq->num_buffers;
465 *nplanes = 1;
466 sizes[0] = PAGE_ALIGN(dev->buffersize);
467 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
468 return 0;
469 }
470
471 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb)
472 {
473 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
474
475 /* Don't allow queing new buffers after device disconnection */
476 if (!dev->udev)
477 return -ENODEV;
478
479 return 0;
480 }
481
482 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb)
483 {
484 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
485 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
486 struct rtl2832_sdr_frame_buf *buf =
487 container_of(vbuf, struct rtl2832_sdr_frame_buf, vb);
488 unsigned long flags;
489
490 /* Check the device has not disconnected between prep and queuing */
491 if (!dev->udev) {
492 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
493 return;
494 }
495
496 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
497 list_add_tail(&buf->list, &dev->queued_bufs);
498 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
499 }
500
501 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev)
502 {
503 struct platform_device *pdev = dev->pdev;
504 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
505 struct dvb_frontend *fe = pdata->dvb_frontend;
506 int ret;
507 unsigned int f_sr, f_if;
508 u8 buf[4], u8tmp1, u8tmp2;
509 u64 u64tmp;
510 u32 u32tmp;
511
512 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc);
513
514 if (!test_bit(POWER_ON, &dev->flags))
515 return 0;
516
517 if (dev->f_adc == 0)
518 return 0;
519
520 f_sr = dev->f_adc;
521
522 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x00\x00", 2);
523 if (ret)
524 goto err;
525
526 ret = regmap_bulk_write(dev->regmap, 0x115, "\x00\x00\x00\x00", 4);
527 if (ret)
528 goto err;
529
530 /* get IF from tuner */
531 if (fe->ops.tuner_ops.get_if_frequency)
532 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if);
533 else
534 ret = -EINVAL;
535
536 if (ret)
537 goto err;
538
539 /* program IF */
540 u64tmp = f_if % pdata->clk;
541 u64tmp *= 0x400000;
542 u64tmp = div_u64(u64tmp, pdata->clk);
543 u64tmp = -u64tmp;
544 u32tmp = u64tmp & 0x3fffff;
545
546 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp);
547
548 buf[0] = (u32tmp >> 16) & 0xff;
549 buf[1] = (u32tmp >> 8) & 0xff;
550 buf[2] = (u32tmp >> 0) & 0xff;
551
552 ret = regmap_bulk_write(dev->regmap, 0x119, buf, 3);
553 if (ret)
554 goto err;
555
556 /* BB / IF mode */
557 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */
558 if (f_if) {
559 u8tmp1 = 0x1a; /* disable Zero-IF */
560 u8tmp2 = 0x8d; /* enable ADC I */
561 } else {
562 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */
563 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */
564 }
565
566 ret = regmap_write(dev->regmap, 0x1b1, u8tmp1);
567 if (ret)
568 goto err;
569
570 ret = regmap_write(dev->regmap, 0x008, u8tmp2);
571 if (ret)
572 goto err;
573
574 ret = regmap_write(dev->regmap, 0x006, 0x80);
575 if (ret)
576 goto err;
577
578 /* program sampling rate (resampling down) */
579 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U);
580 u32tmp <<= 2;
581 buf[0] = (u32tmp >> 24) & 0xff;
582 buf[1] = (u32tmp >> 16) & 0xff;
583 buf[2] = (u32tmp >> 8) & 0xff;
584 buf[3] = (u32tmp >> 0) & 0xff;
585 ret = regmap_bulk_write(dev->regmap, 0x19f, buf, 4);
586 if (ret)
587 goto err;
588
589 /* low-pass filter */
590 ret = regmap_bulk_write(dev->regmap, 0x11c,
591 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5",
592 20);
593 if (ret)
594 goto err;
595
596 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2);
597 if (ret)
598 goto err;
599
600 /* mode */
601 ret = regmap_write(dev->regmap, 0x019, 0x05);
602 if (ret)
603 goto err;
604
605 ret = regmap_bulk_write(dev->regmap, 0x01a,
606 "\x1b\x16\x0d\x06\x01\xff", 6);
607 if (ret)
608 goto err;
609
610 /* FSM */
611 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\xf0\x0f", 3);
612 if (ret)
613 goto err;
614
615 /* PID filter */
616 ret = regmap_write(dev->regmap, 0x061, 0x60);
617 if (ret)
618 goto err;
619
620 /* used RF tuner based settings */
621 switch (pdata->tuner) {
622 case RTL2832_SDR_TUNER_E4000:
623 ret = regmap_write(dev->regmap, 0x112, 0x5a);
624 ret = regmap_write(dev->regmap, 0x102, 0x40);
625 ret = regmap_write(dev->regmap, 0x103, 0x5a);
626 ret = regmap_write(dev->regmap, 0x1c7, 0x30);
627 ret = regmap_write(dev->regmap, 0x104, 0xd0);
628 ret = regmap_write(dev->regmap, 0x105, 0xbe);
629 ret = regmap_write(dev->regmap, 0x1c8, 0x18);
630 ret = regmap_write(dev->regmap, 0x106, 0x35);
631 ret = regmap_write(dev->regmap, 0x1c9, 0x21);
632 ret = regmap_write(dev->regmap, 0x1ca, 0x21);
633 ret = regmap_write(dev->regmap, 0x1cb, 0x00);
634 ret = regmap_write(dev->regmap, 0x107, 0x40);
635 ret = regmap_write(dev->regmap, 0x1cd, 0x10);
636 ret = regmap_write(dev->regmap, 0x1ce, 0x10);
637 ret = regmap_write(dev->regmap, 0x108, 0x80);
638 ret = regmap_write(dev->regmap, 0x109, 0x7f);
639 ret = regmap_write(dev->regmap, 0x10a, 0x80);
640 ret = regmap_write(dev->regmap, 0x10b, 0x7f);
641 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
642 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
643 ret = regmap_write(dev->regmap, 0x011, 0xd4);
644 ret = regmap_write(dev->regmap, 0x1e5, 0xf0);
645 ret = regmap_write(dev->regmap, 0x1d9, 0x00);
646 ret = regmap_write(dev->regmap, 0x1db, 0x00);
647 ret = regmap_write(dev->regmap, 0x1dd, 0x14);
648 ret = regmap_write(dev->regmap, 0x1de, 0xec);
649 ret = regmap_write(dev->regmap, 0x1d8, 0x0c);
650 ret = regmap_write(dev->regmap, 0x1e6, 0x02);
651 ret = regmap_write(dev->regmap, 0x1d7, 0x09);
652 ret = regmap_write(dev->regmap, 0x00d, 0x83);
653 ret = regmap_write(dev->regmap, 0x010, 0x49);
654 ret = regmap_write(dev->regmap, 0x00d, 0x87);
655 ret = regmap_write(dev->regmap, 0x00d, 0x85);
656 ret = regmap_write(dev->regmap, 0x013, 0x02);
657 break;
658 case RTL2832_SDR_TUNER_FC0012:
659 case RTL2832_SDR_TUNER_FC0013:
660 ret = regmap_write(dev->regmap, 0x112, 0x5a);
661 ret = regmap_write(dev->regmap, 0x102, 0x40);
662 ret = regmap_write(dev->regmap, 0x103, 0x5a);
663 ret = regmap_write(dev->regmap, 0x1c7, 0x2c);
664 ret = regmap_write(dev->regmap, 0x104, 0xcc);
665 ret = regmap_write(dev->regmap, 0x105, 0xbe);
666 ret = regmap_write(dev->regmap, 0x1c8, 0x16);
667 ret = regmap_write(dev->regmap, 0x106, 0x35);
668 ret = regmap_write(dev->regmap, 0x1c9, 0x21);
669 ret = regmap_write(dev->regmap, 0x1ca, 0x21);
670 ret = regmap_write(dev->regmap, 0x1cb, 0x00);
671 ret = regmap_write(dev->regmap, 0x107, 0x40);
672 ret = regmap_write(dev->regmap, 0x1cd, 0x10);
673 ret = regmap_write(dev->regmap, 0x1ce, 0x10);
674 ret = regmap_write(dev->regmap, 0x108, 0x80);
675 ret = regmap_write(dev->regmap, 0x109, 0x7f);
676 ret = regmap_write(dev->regmap, 0x10a, 0x80);
677 ret = regmap_write(dev->regmap, 0x10b, 0x7f);
678 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
679 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
680 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xbf", 2);
681 ret = regmap_write(dev->regmap, 0x1e5, 0xf0);
682 ret = regmap_write(dev->regmap, 0x1d9, 0x00);
683 ret = regmap_write(dev->regmap, 0x1db, 0x00);
684 ret = regmap_write(dev->regmap, 0x1dd, 0x11);
685 ret = regmap_write(dev->regmap, 0x1de, 0xef);
686 ret = regmap_write(dev->regmap, 0x1d8, 0x0c);
687 ret = regmap_write(dev->regmap, 0x1e6, 0x02);
688 ret = regmap_write(dev->regmap, 0x1d7, 0x09);
689 break;
690 case RTL2832_SDR_TUNER_R820T:
691 case RTL2832_SDR_TUNER_R828D:
692 ret = regmap_write(dev->regmap, 0x112, 0x5a);
693 ret = regmap_write(dev->regmap, 0x102, 0x40);
694 ret = regmap_write(dev->regmap, 0x115, 0x01);
695 ret = regmap_write(dev->regmap, 0x103, 0x80);
696 ret = regmap_write(dev->regmap, 0x1c7, 0x24);
697 ret = regmap_write(dev->regmap, 0x104, 0xcc);
698 ret = regmap_write(dev->regmap, 0x105, 0xbe);
699 ret = regmap_write(dev->regmap, 0x1c8, 0x14);
700 ret = regmap_write(dev->regmap, 0x106, 0x35);
701 ret = regmap_write(dev->regmap, 0x1c9, 0x21);
702 ret = regmap_write(dev->regmap, 0x1ca, 0x21);
703 ret = regmap_write(dev->regmap, 0x1cb, 0x00);
704 ret = regmap_write(dev->regmap, 0x107, 0x40);
705 ret = regmap_write(dev->regmap, 0x1cd, 0x10);
706 ret = regmap_write(dev->regmap, 0x1ce, 0x10);
707 ret = regmap_write(dev->regmap, 0x108, 0x80);
708 ret = regmap_write(dev->regmap, 0x109, 0x7f);
709 ret = regmap_write(dev->regmap, 0x10a, 0x80);
710 ret = regmap_write(dev->regmap, 0x10b, 0x7f);
711 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
712 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
713 ret = regmap_write(dev->regmap, 0x011, 0xf4);
714 break;
715 case RTL2832_SDR_TUNER_FC2580:
716 ret = regmap_write(dev->regmap, 0x112, 0x39);
717 ret = regmap_write(dev->regmap, 0x102, 0x40);
718 ret = regmap_write(dev->regmap, 0x103, 0x5a);
719 ret = regmap_write(dev->regmap, 0x1c7, 0x2c);
720 ret = regmap_write(dev->regmap, 0x104, 0xcc);
721 ret = regmap_write(dev->regmap, 0x105, 0xbe);
722 ret = regmap_write(dev->regmap, 0x1c8, 0x16);
723 ret = regmap_write(dev->regmap, 0x106, 0x35);
724 ret = regmap_write(dev->regmap, 0x1c9, 0x21);
725 ret = regmap_write(dev->regmap, 0x1ca, 0x21);
726 ret = regmap_write(dev->regmap, 0x1cb, 0x00);
727 ret = regmap_write(dev->regmap, 0x107, 0x40);
728 ret = regmap_write(dev->regmap, 0x1cd, 0x10);
729 ret = regmap_write(dev->regmap, 0x1ce, 0x10);
730 ret = regmap_write(dev->regmap, 0x108, 0x80);
731 ret = regmap_write(dev->regmap, 0x109, 0x7f);
732 ret = regmap_write(dev->regmap, 0x10a, 0x9c);
733 ret = regmap_write(dev->regmap, 0x10b, 0x7f);
734 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
735 ret = regmap_write(dev->regmap, 0x00e, 0xfc);
736 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xf4", 2);
737 break;
738 default:
739 dev_notice(&pdev->dev, "Unsupported tuner\n");
740 }
741
742 /* software reset */
743 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x04);
744 if (ret)
745 goto err;
746
747 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x00);
748 if (ret)
749 goto err;
750 err:
751 return ret;
752 };
753
754 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev)
755 {
756 struct platform_device *pdev = dev->pdev;
757 int ret;
758
759 dev_dbg(&pdev->dev, "\n");
760
761 /* PID filter */
762 ret = regmap_write(dev->regmap, 0x061, 0xe0);
763 if (ret)
764 goto err;
765
766 /* mode */
767 ret = regmap_write(dev->regmap, 0x019, 0x20);
768 if (ret)
769 goto err;
770
771 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2);
772 if (ret)
773 goto err;
774
775 /* FSM */
776 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3);
777 if (ret)
778 goto err;
779
780 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x40\x00", 2);
781 if (ret)
782 goto err;
783
784 ret = regmap_bulk_write(dev->regmap, 0x115, "\x06\x3f\xce\xcc", 4);
785 if (ret)
786 goto err;
787 err:
788 return;
789 };
790
791 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev)
792 {
793 struct platform_device *pdev = dev->pdev;
794 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
795 struct dvb_frontend *fe = pdata->dvb_frontend;
796 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
797 struct v4l2_ctrl *bandwidth_auto;
798 struct v4l2_ctrl *bandwidth;
799
800 /*
801 * tuner RF (Hz)
802 */
803 if (dev->f_tuner == 0)
804 return 0;
805
806 /*
807 * bandwidth (Hz)
808 */
809 bandwidth_auto = v4l2_ctrl_find(&dev->hdl,
810 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO);
811 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH);
812 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) {
813 c->bandwidth_hz = dev->f_adc;
814 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc);
815 } else {
816 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth);
817 }
818
819 c->frequency = dev->f_tuner;
820 c->delivery_system = SYS_DVBT;
821
822 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n",
823 c->frequency, c->bandwidth_hz);
824
825 if (!test_bit(POWER_ON, &dev->flags))
826 return 0;
827
828 if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) {
829 if (fe->ops.tuner_ops.set_params)
830 fe->ops.tuner_ops.set_params(fe);
831 }
832
833 return 0;
834 };
835
836 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev)
837 {
838 struct platform_device *pdev = dev->pdev;
839 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
840 struct dvb_frontend *fe = pdata->dvb_frontend;
841
842 dev_dbg(&pdev->dev, "\n");
843
844 if (fe->ops.tuner_ops.init)
845 fe->ops.tuner_ops.init(fe);
846
847 return 0;
848 };
849
850 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev)
851 {
852 struct platform_device *pdev = dev->pdev;
853 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
854 struct dvb_frontend *fe = pdata->dvb_frontend;
855
856 dev_dbg(&pdev->dev, "\n");
857
858 if (fe->ops.tuner_ops.sleep)
859 fe->ops.tuner_ops.sleep(fe);
860
861 return;
862 };
863
864 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count)
865 {
866 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
867 struct platform_device *pdev = dev->pdev;
868 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
869 struct dvb_usb_device *d = pdata->dvb_usb_device;
870 int ret;
871
872 dev_dbg(&pdev->dev, "\n");
873
874 if (!dev->udev)
875 return -ENODEV;
876
877 if (mutex_lock_interruptible(&dev->v4l2_lock))
878 return -ERESTARTSYS;
879
880 if (d->props->power_ctrl)
881 d->props->power_ctrl(d, 1);
882
883 /* enable ADC */
884 if (d->props->frontend_ctrl)
885 d->props->frontend_ctrl(pdata->dvb_frontend, 1);
886
887 set_bit(POWER_ON, &dev->flags);
888
889 /* wake-up tuner */
890 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power))
891 ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1);
892 else
893 ret = rtl2832_sdr_set_tuner(dev);
894 if (ret)
895 goto err;
896
897 ret = rtl2832_sdr_set_tuner_freq(dev);
898 if (ret)
899 goto err;
900
901 ret = rtl2832_sdr_set_adc(dev);
902 if (ret)
903 goto err;
904
905 ret = rtl2832_sdr_alloc_stream_bufs(dev);
906 if (ret)
907 goto err;
908
909 ret = rtl2832_sdr_alloc_urbs(dev);
910 if (ret)
911 goto err;
912
913 dev->sequence = 0;
914
915 ret = rtl2832_sdr_submit_urbs(dev);
916 if (ret)
917 goto err;
918
919 err:
920 mutex_unlock(&dev->v4l2_lock);
921
922 return ret;
923 }
924
925 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq)
926 {
927 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
928 struct platform_device *pdev = dev->pdev;
929 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
930 struct dvb_usb_device *d = pdata->dvb_usb_device;
931
932 dev_dbg(&pdev->dev, "\n");
933
934 mutex_lock(&dev->v4l2_lock);
935
936 rtl2832_sdr_kill_urbs(dev);
937 rtl2832_sdr_free_urbs(dev);
938 rtl2832_sdr_free_stream_bufs(dev);
939 rtl2832_sdr_cleanup_queued_bufs(dev);
940 rtl2832_sdr_unset_adc(dev);
941
942 /* sleep tuner */
943 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power))
944 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0);
945 else
946 rtl2832_sdr_unset_tuner(dev);
947
948 clear_bit(POWER_ON, &dev->flags);
949
950 /* disable ADC */
951 if (d->props->frontend_ctrl)
952 d->props->frontend_ctrl(pdata->dvb_frontend, 0);
953
954 if (d->props->power_ctrl)
955 d->props->power_ctrl(d, 0);
956
957 mutex_unlock(&dev->v4l2_lock);
958 }
959
960 static struct vb2_ops rtl2832_sdr_vb2_ops = {
961 .queue_setup = rtl2832_sdr_queue_setup,
962 .buf_prepare = rtl2832_sdr_buf_prepare,
963 .buf_queue = rtl2832_sdr_buf_queue,
964 .start_streaming = rtl2832_sdr_start_streaming,
965 .stop_streaming = rtl2832_sdr_stop_streaming,
966 .wait_prepare = vb2_ops_wait_prepare,
967 .wait_finish = vb2_ops_wait_finish,
968 };
969
970 static int rtl2832_sdr_g_tuner(struct file *file, void *priv,
971 struct v4l2_tuner *v)
972 {
973 struct rtl2832_sdr_dev *dev = video_drvdata(file);
974 struct platform_device *pdev = dev->pdev;
975 int ret;
976
977 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type);
978
979 if (v->index == 0) {
980 strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
981 v->type = V4L2_TUNER_ADC;
982 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
983 v->rangelow = 300000;
984 v->rangehigh = 3200000;
985 ret = 0;
986 } else if (v->index == 1 &&
987 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) {
988 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v);
989 } else if (v->index == 1) {
990 strlcpy(v->name, "RF: <unknown>", sizeof(v->name));
991 v->type = V4L2_TUNER_RF;
992 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
993 v->rangelow = 50000000;
994 v->rangehigh = 2000000000;
995 ret = 0;
996 } else {
997 ret = -EINVAL;
998 }
999 return ret;
1000 }
1001
1002 static int rtl2832_sdr_s_tuner(struct file *file, void *priv,
1003 const struct v4l2_tuner *v)
1004 {
1005 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1006 struct platform_device *pdev = dev->pdev;
1007 int ret;
1008
1009 dev_dbg(&pdev->dev, "\n");
1010
1011 if (v->index == 0) {
1012 ret = 0;
1013 } else if (v->index == 1 &&
1014 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) {
1015 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v);
1016 } else if (v->index == 1) {
1017 ret = 0;
1018 } else {
1019 ret = -EINVAL;
1020 }
1021 return ret;
1022 }
1023
1024 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv,
1025 struct v4l2_frequency_band *band)
1026 {
1027 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1028 struct platform_device *pdev = dev->pdev;
1029 int ret;
1030
1031 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n",
1032 band->tuner, band->type, band->index);
1033
1034 if (band->tuner == 0) {
1035 if (band->index >= ARRAY_SIZE(bands_adc))
1036 return -EINVAL;
1037
1038 *band = bands_adc[band->index];
1039 ret = 0;
1040 } else if (band->tuner == 1 &&
1041 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) {
1042 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band);
1043 } else if (band->tuner == 1) {
1044 if (band->index >= ARRAY_SIZE(bands_fm))
1045 return -EINVAL;
1046
1047 *band = bands_fm[band->index];
1048 ret = 0;
1049 } else {
1050 ret = -EINVAL;
1051 }
1052 return ret;
1053 }
1054
1055 static int rtl2832_sdr_g_frequency(struct file *file, void *priv,
1056 struct v4l2_frequency *f)
1057 {
1058 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1059 struct platform_device *pdev = dev->pdev;
1060 int ret;
1061
1062 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type);
1063
1064 if (f->tuner == 0) {
1065 f->frequency = dev->f_adc;
1066 f->type = V4L2_TUNER_ADC;
1067 ret = 0;
1068 } else if (f->tuner == 1 &&
1069 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) {
1070 f->type = V4L2_TUNER_RF;
1071 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f);
1072 } else if (f->tuner == 1) {
1073 f->frequency = dev->f_tuner;
1074 f->type = V4L2_TUNER_RF;
1075 ret = 0;
1076 } else {
1077 ret = -EINVAL;
1078 }
1079 return ret;
1080 }
1081
1082 static int rtl2832_sdr_s_frequency(struct file *file, void *priv,
1083 const struct v4l2_frequency *f)
1084 {
1085 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1086 struct platform_device *pdev = dev->pdev;
1087 int ret, band;
1088
1089 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n",
1090 f->tuner, f->type, f->frequency);
1091
1092 /* ADC band midpoints */
1093 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2)
1094 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2)
1095
1096 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) {
1097 if (f->frequency < BAND_ADC_0)
1098 band = 0;
1099 else if (f->frequency < BAND_ADC_1)
1100 band = 1;
1101 else
1102 band = 2;
1103
1104 dev->f_adc = clamp_t(unsigned int, f->frequency,
1105 bands_adc[band].rangelow,
1106 bands_adc[band].rangehigh);
1107
1108 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc);
1109 ret = rtl2832_sdr_set_adc(dev);
1110 } else if (f->tuner == 1 &&
1111 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) {
1112 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f);
1113 } else if (f->tuner == 1) {
1114 dev->f_tuner = clamp_t(unsigned int, f->frequency,
1115 bands_fm[0].rangelow,
1116 bands_fm[0].rangehigh);
1117 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency);
1118
1119 ret = rtl2832_sdr_set_tuner_freq(dev);
1120 } else {
1121 ret = -EINVAL;
1122 }
1123 return ret;
1124 }
1125
1126 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,
1127 struct v4l2_fmtdesc *f)
1128 {
1129 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1130 struct platform_device *pdev = dev->pdev;
1131
1132 dev_dbg(&pdev->dev, "\n");
1133
1134 if (f->index >= dev->num_formats)
1135 return -EINVAL;
1136
1137 strlcpy(f->description, formats[f->index].name, sizeof(f->description));
1138 f->pixelformat = formats[f->index].pixelformat;
1139
1140 return 0;
1141 }
1142
1143 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv,
1144 struct v4l2_format *f)
1145 {
1146 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1147 struct platform_device *pdev = dev->pdev;
1148
1149 dev_dbg(&pdev->dev, "\n");
1150
1151 f->fmt.sdr.pixelformat = dev->pixelformat;
1152 f->fmt.sdr.buffersize = dev->buffersize;
1153
1154 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1155
1156 return 0;
1157 }
1158
1159 static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,
1160 struct v4l2_format *f)
1161 {
1162 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1163 struct platform_device *pdev = dev->pdev;
1164 struct vb2_queue *q = &dev->vb_queue;
1165 int i;
1166
1167 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",
1168 (char *)&f->fmt.sdr.pixelformat);
1169
1170 if (vb2_is_busy(q))
1171 return -EBUSY;
1172
1173 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1174 for (i = 0; i < dev->num_formats; i++) {
1175 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1176 dev->pixelformat = formats[i].pixelformat;
1177 dev->buffersize = formats[i].buffersize;
1178 f->fmt.sdr.buffersize = formats[i].buffersize;
1179 return 0;
1180 }
1181 }
1182
1183 dev->pixelformat = formats[0].pixelformat;
1184 dev->buffersize = formats[0].buffersize;
1185 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1186 f->fmt.sdr.buffersize = formats[0].buffersize;
1187
1188 return 0;
1189 }
1190
1191 static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,
1192 struct v4l2_format *f)
1193 {
1194 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1195 struct platform_device *pdev = dev->pdev;
1196 int i;
1197
1198 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",
1199 (char *)&f->fmt.sdr.pixelformat);
1200
1201 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1202 for (i = 0; i < dev->num_formats; i++) {
1203 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1204 f->fmt.sdr.buffersize = formats[i].buffersize;
1205 return 0;
1206 }
1207 }
1208
1209 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1210 f->fmt.sdr.buffersize = formats[0].buffersize;
1211
1212 return 0;
1213 }
1214
1215 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = {
1216 .vidioc_querycap = rtl2832_sdr_querycap,
1217
1218 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap,
1219 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap,
1220 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap,
1221 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap,
1222
1223 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1224 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1225 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1226 .vidioc_querybuf = vb2_ioctl_querybuf,
1227 .vidioc_qbuf = vb2_ioctl_qbuf,
1228 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1229
1230 .vidioc_streamon = vb2_ioctl_streamon,
1231 .vidioc_streamoff = vb2_ioctl_streamoff,
1232
1233 .vidioc_g_tuner = rtl2832_sdr_g_tuner,
1234 .vidioc_s_tuner = rtl2832_sdr_s_tuner,
1235
1236 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands,
1237 .vidioc_g_frequency = rtl2832_sdr_g_frequency,
1238 .vidioc_s_frequency = rtl2832_sdr_s_frequency,
1239
1240 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1241 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1242 .vidioc_log_status = v4l2_ctrl_log_status,
1243 };
1244
1245 static const struct v4l2_file_operations rtl2832_sdr_fops = {
1246 .owner = THIS_MODULE,
1247 .open = v4l2_fh_open,
1248 .release = vb2_fop_release,
1249 .read = vb2_fop_read,
1250 .poll = vb2_fop_poll,
1251 .mmap = vb2_fop_mmap,
1252 .unlocked_ioctl = video_ioctl2,
1253 };
1254
1255 static struct video_device rtl2832_sdr_template = {
1256 .name = "Realtek RTL2832 SDR",
1257 .release = video_device_release_empty,
1258 .fops = &rtl2832_sdr_fops,
1259 .ioctl_ops = &rtl2832_sdr_ioctl_ops,
1260 };
1261
1262 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
1263 {
1264 struct rtl2832_sdr_dev *dev =
1265 container_of(ctrl->handler, struct rtl2832_sdr_dev,
1266 hdl);
1267 struct platform_device *pdev = dev->pdev;
1268 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
1269 struct dvb_frontend *fe = pdata->dvb_frontend;
1270 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1271 int ret;
1272
1273 dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n",
1274 ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum,
1275 ctrl->step);
1276
1277 switch (ctrl->id) {
1278 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
1279 case V4L2_CID_RF_TUNER_BANDWIDTH:
1280 /* TODO: these controls should be moved to tuner drivers */
1281 if (dev->bandwidth_auto->val) {
1282 /* Round towards the closest legal value */
1283 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2);
1284 u32 offset;
1285
1286 val = clamp_t(s32, val, dev->bandwidth->minimum,
1287 dev->bandwidth->maximum);
1288 offset = val - dev->bandwidth->minimum;
1289 offset = dev->bandwidth->step *
1290 div_u64(offset, dev->bandwidth->step);
1291 dev->bandwidth->val = dev->bandwidth->minimum + offset;
1292 }
1293 c->bandwidth_hz = dev->bandwidth->val;
1294
1295 if (!test_bit(POWER_ON, &dev->flags))
1296 return 0;
1297
1298 if (fe->ops.tuner_ops.set_params)
1299 ret = fe->ops.tuner_ops.set_params(fe);
1300 else
1301 ret = 0;
1302 break;
1303 default:
1304 ret = -EINVAL;
1305 }
1306
1307 return ret;
1308 }
1309
1310 static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = {
1311 .s_ctrl = rtl2832_sdr_s_ctrl,
1312 };
1313
1314 static void rtl2832_sdr_video_release(struct v4l2_device *v)
1315 {
1316 struct rtl2832_sdr_dev *dev =
1317 container_of(v, struct rtl2832_sdr_dev, v4l2_dev);
1318 struct platform_device *pdev = dev->pdev;
1319
1320 dev_dbg(&pdev->dev, "\n");
1321
1322 v4l2_ctrl_handler_free(&dev->hdl);
1323 v4l2_device_unregister(&dev->v4l2_dev);
1324 kfree(dev);
1325 }
1326
1327 /* Platform driver interface */
1328 static int rtl2832_sdr_probe(struct platform_device *pdev)
1329 {
1330 struct rtl2832_sdr_dev *dev;
1331 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
1332 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops;
1333 struct v4l2_subdev *subdev;
1334 int ret;
1335
1336 dev_dbg(&pdev->dev, "\n");
1337
1338 if (!pdata) {
1339 dev_err(&pdev->dev, "Cannot proceed without platform data\n");
1340 ret = -EINVAL;
1341 goto err;
1342 }
1343 if (!pdev->dev.parent->driver) {
1344 dev_dbg(&pdev->dev, "No parent device\n");
1345 ret = -EINVAL;
1346 goto err;
1347 }
1348 /* try to refcount host drv since we are the consumer */
1349 if (!try_module_get(pdev->dev.parent->driver->owner)) {
1350 dev_err(&pdev->dev, "Refcount fail");
1351 ret = -EINVAL;
1352 goto err;
1353 }
1354 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1355 if (dev == NULL) {
1356 ret = -ENOMEM;
1357 goto err_module_put;
1358 }
1359
1360 /* setup the state */
1361 subdev = pdata->v4l2_subdev;
1362 dev->v4l2_subdev = pdata->v4l2_subdev;
1363 dev->pdev = pdev;
1364 dev->regmap = pdata->regmap;
1365 dev->udev = pdata->dvb_usb_device->udev;
1366 dev->f_adc = bands_adc[0].rangelow;
1367 dev->f_tuner = bands_fm[0].rangelow;
1368 dev->pixelformat = formats[0].pixelformat;
1369 dev->buffersize = formats[0].buffersize;
1370 dev->num_formats = NUM_FORMATS;
1371 if (!rtl2832_sdr_emulated_fmt)
1372 dev->num_formats -= 1;
1373
1374 mutex_init(&dev->v4l2_lock);
1375 mutex_init(&dev->vb_queue_lock);
1376 spin_lock_init(&dev->queued_bufs_lock);
1377 INIT_LIST_HEAD(&dev->queued_bufs);
1378
1379 /* Init videobuf2 queue structure */
1380 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;
1381 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1382 dev->vb_queue.drv_priv = dev;
1383 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf);
1384 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops;
1385 dev->vb_queue.mem_ops = &vb2_vmalloc_memops;
1386 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1387 ret = vb2_queue_init(&dev->vb_queue);
1388 if (ret) {
1389 dev_err(&pdev->dev, "Could not initialize vb2 queue\n");
1390 goto err_kfree;
1391 }
1392
1393 /* Register controls */
1394 switch (pdata->tuner) {
1395 case RTL2832_SDR_TUNER_E4000:
1396 v4l2_ctrl_handler_init(&dev->hdl, 9);
1397 if (subdev)
1398 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, NULL);
1399 break;
1400 case RTL2832_SDR_TUNER_R820T:
1401 case RTL2832_SDR_TUNER_R828D:
1402 v4l2_ctrl_handler_init(&dev->hdl, 2);
1403 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1404 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1405 0, 1, 1, 1);
1406 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1407 V4L2_CID_RF_TUNER_BANDWIDTH,
1408 0, 8000000, 100000, 0);
1409 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1410 break;
1411 case RTL2832_SDR_TUNER_FC0012:
1412 case RTL2832_SDR_TUNER_FC0013:
1413 v4l2_ctrl_handler_init(&dev->hdl, 2);
1414 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1415 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1416 0, 1, 1, 1);
1417 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1418 V4L2_CID_RF_TUNER_BANDWIDTH,
1419 6000000, 8000000, 1000000,
1420 6000000);
1421 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1422 break;
1423 case RTL2832_SDR_TUNER_FC2580:
1424 v4l2_ctrl_handler_init(&dev->hdl, 2);
1425 if (subdev)
1426 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler,
1427 NULL);
1428 break;
1429 default:
1430 v4l2_ctrl_handler_init(&dev->hdl, 0);
1431 dev_err(&pdev->dev, "Unsupported tuner\n");
1432 goto err_v4l2_ctrl_handler_free;
1433 }
1434 if (dev->hdl.error) {
1435 ret = dev->hdl.error;
1436 dev_err(&pdev->dev, "Could not initialize controls\n");
1437 goto err_v4l2_ctrl_handler_free;
1438 }
1439
1440 /* Init video_device structure */
1441 dev->vdev = rtl2832_sdr_template;
1442 dev->vdev.queue = &dev->vb_queue;
1443 dev->vdev.queue->lock = &dev->vb_queue_lock;
1444 video_set_drvdata(&dev->vdev, dev);
1445
1446 /* Register the v4l2_device structure */
1447 dev->v4l2_dev.release = rtl2832_sdr_video_release;
1448 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1449 if (ret) {
1450 dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret);
1451 goto err_v4l2_ctrl_handler_free;
1452 }
1453
1454 dev->v4l2_dev.ctrl_handler = &dev->hdl;
1455 dev->vdev.v4l2_dev = &dev->v4l2_dev;
1456 dev->vdev.lock = &dev->v4l2_lock;
1457 dev->vdev.vfl_dir = VFL_DIR_RX;
1458
1459 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1);
1460 if (ret) {
1461 dev_err(&pdev->dev, "Failed to register as video device %d\n",
1462 ret);
1463 goto err_v4l2_device_unregister;
1464 }
1465 dev_info(&pdev->dev, "Registered as %s\n",
1466 video_device_node_name(&dev->vdev));
1467 dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n");
1468 dev_notice(&pdev->dev,
1469 "SDR API is still slightly experimental and functionality changes may follow\n");
1470 platform_set_drvdata(pdev, dev);
1471 return 0;
1472 err_v4l2_device_unregister:
1473 v4l2_device_unregister(&dev->v4l2_dev);
1474 err_v4l2_ctrl_handler_free:
1475 v4l2_ctrl_handler_free(&dev->hdl);
1476 err_kfree:
1477 kfree(dev);
1478 err_module_put:
1479 module_put(pdev->dev.parent->driver->owner);
1480 err:
1481 return ret;
1482 }
1483
1484 static int rtl2832_sdr_remove(struct platform_device *pdev)
1485 {
1486 struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev);
1487
1488 dev_dbg(&pdev->dev, "\n");
1489
1490 mutex_lock(&dev->vb_queue_lock);
1491 mutex_lock(&dev->v4l2_lock);
1492 /* No need to keep the urbs around after disconnection */
1493 dev->udev = NULL;
1494 v4l2_device_disconnect(&dev->v4l2_dev);
1495 video_unregister_device(&dev->vdev);
1496 mutex_unlock(&dev->v4l2_lock);
1497 mutex_unlock(&dev->vb_queue_lock);
1498 v4l2_device_put(&dev->v4l2_dev);
1499 module_put(pdev->dev.parent->driver->owner);
1500
1501 return 0;
1502 }
1503
1504 static struct platform_driver rtl2832_sdr_driver = {
1505 .driver = {
1506 .name = "rtl2832_sdr",
1507 },
1508 .probe = rtl2832_sdr_probe,
1509 .remove = rtl2832_sdr_remove,
1510 };
1511 module_platform_driver(rtl2832_sdr_driver);
1512
1513 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1514 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver");
1515 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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