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Merge tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[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
39 static bool rtl2832_sdr_emulated_fmt;
40 module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644);
41 MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
42
43 /* Original macro does not contain enough null pointer checks for our need */
44 #define V4L2_SUBDEV_HAS_OP(sd, o, f) \
45 ((sd) && (sd)->ops && (sd)->ops->o && (sd)->ops->o->f)
46
47 #define MAX_BULK_BUFS (10)
48 #define BULK_BUFFER_SIZE (128 * 512)
49
50 static const struct v4l2_frequency_band bands_adc[] = {
51 {
52 .tuner = 0,
53 .type = V4L2_TUNER_ADC,
54 .index = 0,
55 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
56 .rangelow = 300000,
57 .rangehigh = 300000,
58 },
59 {
60 .tuner = 0,
61 .type = V4L2_TUNER_ADC,
62 .index = 1,
63 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
64 .rangelow = 900001,
65 .rangehigh = 2800000,
66 },
67 {
68 .tuner = 0,
69 .type = V4L2_TUNER_ADC,
70 .index = 2,
71 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
72 .rangelow = 3200000,
73 .rangehigh = 3200000,
74 },
75 };
76
77 static const struct v4l2_frequency_band bands_fm[] = {
78 {
79 .tuner = 1,
80 .type = V4L2_TUNER_RF,
81 .index = 0,
82 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
83 .rangelow = 50000000,
84 .rangehigh = 2000000000,
85 },
86 };
87
88 /* stream formats */
89 struct rtl2832_sdr_format {
90 char *name;
91 u32 pixelformat;
92 u32 buffersize;
93 };
94
95 static struct rtl2832_sdr_format formats[] = {
96 {
97 .name = "Complex U8",
98 .pixelformat = V4L2_SDR_FMT_CU8,
99 .buffersize = BULK_BUFFER_SIZE,
100 }, {
101 .name = "Complex U16LE (emulated)",
102 .pixelformat = V4L2_SDR_FMT_CU16LE,
103 .buffersize = BULK_BUFFER_SIZE * 2,
104 },
105 };
106
107 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
108
109 /* intermediate buffers with raw data from the USB device */
110 struct rtl2832_sdr_frame_buf {
111 /* common v4l buffer stuff -- must be first */
112 struct vb2_v4l2_buffer vb;
113 struct list_head list;
114 };
115
116 struct rtl2832_sdr_dev {
117 #define POWER_ON 0 /* BIT(0) */
118 #define URB_BUF 1 /* BIT(1) */
119 unsigned long flags;
120
121 struct platform_device *pdev;
122
123 struct video_device vdev;
124 struct v4l2_device v4l2_dev;
125 struct v4l2_subdev *v4l2_subdev;
126
127 /* videobuf2 queue and queued buffers list */
128 struct vb2_queue vb_queue;
129 struct list_head queued_bufs;
130 spinlock_t queued_bufs_lock; /* Protects queued_bufs */
131 unsigned sequence; /* buffer sequence counter */
132
133 /* Note if taking both locks v4l2_lock must always be locked first! */
134 struct mutex v4l2_lock; /* Protects everything else */
135 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
136
137 /* Pointer to our usb_device, will be NULL after unplug */
138 struct usb_device *udev; /* Both mutexes most be hold when setting! */
139
140 unsigned int vb_full; /* vb is full and packets dropped */
141
142 struct urb *urb_list[MAX_BULK_BUFS];
143 int buf_num;
144 unsigned long buf_size;
145 u8 *buf_list[MAX_BULK_BUFS];
146 dma_addr_t dma_addr[MAX_BULK_BUFS];
147 int urbs_initialized;
148 int urbs_submitted;
149
150 unsigned int f_adc, f_tuner;
151 u32 pixelformat;
152 u32 buffersize;
153 unsigned int num_formats;
154
155 /* Controls */
156 struct v4l2_ctrl_handler hdl;
157 struct v4l2_ctrl *bandwidth_auto;
158 struct v4l2_ctrl *bandwidth;
159
160 /* for sample rate calc */
161 unsigned int sample;
162 unsigned int sample_measured;
163 unsigned long jiffies_next;
164 };
165
166 /* write multiple registers */
167 static int rtl2832_sdr_wr_regs(struct rtl2832_sdr_dev *dev, u16 reg,
168 const u8 *val, int len)
169 {
170 struct platform_device *pdev = dev->pdev;
171 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
172 struct i2c_client *client = pdata->i2c_client;
173
174 return pdata->bulk_write(client, reg, val, len);
175 }
176
177 #if 0
178 /* read multiple registers */
179 static int rtl2832_sdr_rd_regs(struct rtl2832_sdr_dev *dev, u16 reg, u8 *val,
180 int len)
181 {
182 struct platform_device *pdev = dev->pdev;
183 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
184 struct i2c_client *client = pdata->i2c_client;
185
186 return pdata->bulk_read(client, reg, val, len);
187 }
188 #endif
189
190 /* write single register */
191 static int rtl2832_sdr_wr_reg(struct rtl2832_sdr_dev *dev, u16 reg, u8 val)
192 {
193 return rtl2832_sdr_wr_regs(dev, reg, &val, 1);
194 }
195
196 /* write single register with mask */
197 static int rtl2832_sdr_wr_reg_mask(struct rtl2832_sdr_dev *dev, u16 reg,
198 u8 val, u8 mask)
199 {
200 struct platform_device *pdev = dev->pdev;
201 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
202 struct i2c_client *client = pdata->i2c_client;
203
204 return pdata->update_bits(client, reg, mask, val);
205 }
206
207 /* Private functions */
208 static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf(
209 struct rtl2832_sdr_dev *dev)
210 {
211 unsigned long flags;
212 struct rtl2832_sdr_frame_buf *buf = NULL;
213
214 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
215 if (list_empty(&dev->queued_bufs))
216 goto leave;
217
218 buf = list_entry(dev->queued_bufs.next,
219 struct rtl2832_sdr_frame_buf, list);
220 list_del(&buf->list);
221 leave:
222 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
223 return buf;
224 }
225
226 static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev,
227 void *dst, const u8 *src, unsigned int src_len)
228 {
229 struct platform_device *pdev = dev->pdev;
230 unsigned int dst_len;
231
232 if (dev->pixelformat == V4L2_SDR_FMT_CU8) {
233 /* native stream, no need to convert */
234 memcpy(dst, src, src_len);
235 dst_len = src_len;
236 } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) {
237 /* convert u8 to u16 */
238 unsigned int i;
239 u16 *u16dst = dst;
240
241 for (i = 0; i < src_len; i++)
242 *u16dst++ = (src[i] << 8) | (src[i] >> 0);
243 dst_len = 2 * src_len;
244 } else {
245 dst_len = 0;
246 }
247
248 /* calculate sample rate and output it in 10 seconds intervals */
249 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) {
250 #define MSECS 10000UL
251 unsigned int msecs = jiffies_to_msecs(jiffies -
252 dev->jiffies_next + msecs_to_jiffies(MSECS));
253 unsigned int samples = dev->sample - dev->sample_measured;
254
255 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
256 dev->sample_measured = dev->sample;
257 dev_dbg(&pdev->dev,
258 "slen=%u samples=%u msecs=%u sample rate=%lu\n",
259 src_len, samples, msecs, samples * 1000UL / msecs);
260 }
261
262 /* total number of I+Q pairs */
263 dev->sample += src_len / 2;
264
265 return dst_len;
266 }
267
268 /*
269 * This gets called for the bulk stream pipe. This is done in interrupt
270 * time, so it has to be fast, not crash, and not stall. Neat.
271 */
272 static void rtl2832_sdr_urb_complete(struct urb *urb)
273 {
274 struct rtl2832_sdr_dev *dev = urb->context;
275 struct platform_device *pdev = dev->pdev;
276 struct rtl2832_sdr_frame_buf *fbuf;
277
278 dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n",
279 urb->status, urb->actual_length,
280 urb->transfer_buffer_length, urb->error_count);
281
282 switch (urb->status) {
283 case 0: /* success */
284 case -ETIMEDOUT: /* NAK */
285 break;
286 case -ECONNRESET: /* kill */
287 case -ENOENT:
288 case -ESHUTDOWN:
289 return;
290 default: /* error */
291 dev_err_ratelimited(&pdev->dev, "urb failed=%d\n", urb->status);
292 break;
293 }
294
295 if (likely(urb->actual_length > 0)) {
296 void *ptr;
297 unsigned int len;
298 /* get free framebuffer */
299 fbuf = rtl2832_sdr_get_next_fill_buf(dev);
300 if (unlikely(fbuf == NULL)) {
301 dev->vb_full++;
302 dev_notice_ratelimited(&pdev->dev,
303 "videobuf is full, %d packets dropped\n",
304 dev->vb_full);
305 goto skip;
306 }
307
308 /* fill framebuffer */
309 ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0);
310 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer,
311 urb->actual_length);
312 vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, len);
313 fbuf->vb.vb2_buf.timestamp = ktime_get_ns();
314 fbuf->vb.sequence = dev->sequence++;
315 vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
316 }
317 skip:
318 usb_submit_urb(urb, GFP_ATOMIC);
319 }
320
321 static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev)
322 {
323 struct platform_device *pdev = dev->pdev;
324 int i;
325
326 for (i = dev->urbs_submitted - 1; i >= 0; i--) {
327 dev_dbg(&pdev->dev, "kill urb=%d\n", i);
328 /* stop the URB */
329 usb_kill_urb(dev->urb_list[i]);
330 }
331 dev->urbs_submitted = 0;
332
333 return 0;
334 }
335
336 static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev)
337 {
338 struct platform_device *pdev = dev->pdev;
339 int i, ret;
340
341 for (i = 0; i < dev->urbs_initialized; i++) {
342 dev_dbg(&pdev->dev, "submit urb=%d\n", i);
343 ret = usb_submit_urb(dev->urb_list[i], GFP_ATOMIC);
344 if (ret) {
345 dev_err(&pdev->dev,
346 "Could not submit urb no. %d - get them all back\n",
347 i);
348 rtl2832_sdr_kill_urbs(dev);
349 return ret;
350 }
351 dev->urbs_submitted++;
352 }
353
354 return 0;
355 }
356
357 static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev)
358 {
359 struct platform_device *pdev = dev->pdev;
360
361 if (test_bit(URB_BUF, &dev->flags)) {
362 while (dev->buf_num) {
363 dev->buf_num--;
364 dev_dbg(&pdev->dev, "free buf=%d\n", dev->buf_num);
365 usb_free_coherent(dev->udev, dev->buf_size,
366 dev->buf_list[dev->buf_num],
367 dev->dma_addr[dev->buf_num]);
368 }
369 }
370 clear_bit(URB_BUF, &dev->flags);
371
372 return 0;
373 }
374
375 static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev)
376 {
377 struct platform_device *pdev = dev->pdev;
378
379 dev->buf_num = 0;
380 dev->buf_size = BULK_BUFFER_SIZE;
381
382 dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n",
383 MAX_BULK_BUFS * BULK_BUFFER_SIZE);
384
385 for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) {
386 dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev,
387 BULK_BUFFER_SIZE, GFP_ATOMIC,
388 &dev->dma_addr[dev->buf_num]);
389 if (!dev->buf_list[dev->buf_num]) {
390 dev_dbg(&pdev->dev, "alloc buf=%d failed\n",
391 dev->buf_num);
392 rtl2832_sdr_free_stream_bufs(dev);
393 return -ENOMEM;
394 }
395
396 dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n",
397 dev->buf_num, dev->buf_list[dev->buf_num],
398 (long long)dev->dma_addr[dev->buf_num]);
399 set_bit(URB_BUF, &dev->flags);
400 }
401
402 return 0;
403 }
404
405 static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev)
406 {
407 struct platform_device *pdev = dev->pdev;
408 int i;
409
410 rtl2832_sdr_kill_urbs(dev);
411
412 for (i = dev->urbs_initialized - 1; i >= 0; i--) {
413 if (dev->urb_list[i]) {
414 dev_dbg(&pdev->dev, "free urb=%d\n", i);
415 /* free the URBs */
416 usb_free_urb(dev->urb_list[i]);
417 }
418 }
419 dev->urbs_initialized = 0;
420
421 return 0;
422 }
423
424 static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev)
425 {
426 struct platform_device *pdev = dev->pdev;
427 int i, j;
428
429 /* allocate the URBs */
430 for (i = 0; i < MAX_BULK_BUFS; i++) {
431 dev_dbg(&pdev->dev, "alloc urb=%d\n", i);
432 dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
433 if (!dev->urb_list[i]) {
434 dev_dbg(&pdev->dev, "failed\n");
435 for (j = 0; j < i; j++)
436 usb_free_urb(dev->urb_list[j]);
437 return -ENOMEM;
438 }
439 usb_fill_bulk_urb(dev->urb_list[i],
440 dev->udev,
441 usb_rcvbulkpipe(dev->udev, 0x81),
442 dev->buf_list[i],
443 BULK_BUFFER_SIZE,
444 rtl2832_sdr_urb_complete, dev);
445
446 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
447 dev->urb_list[i]->transfer_dma = dev->dma_addr[i];
448 dev->urbs_initialized++;
449 }
450
451 return 0;
452 }
453
454 /* Must be called with vb_queue_lock hold */
455 static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev)
456 {
457 struct platform_device *pdev = dev->pdev;
458 unsigned long flags;
459
460 dev_dbg(&pdev->dev, "\n");
461
462 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
463 while (!list_empty(&dev->queued_bufs)) {
464 struct rtl2832_sdr_frame_buf *buf;
465
466 buf = list_entry(dev->queued_bufs.next,
467 struct rtl2832_sdr_frame_buf, list);
468 list_del(&buf->list);
469 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
470 }
471 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
472 }
473
474 static int rtl2832_sdr_querycap(struct file *file, void *fh,
475 struct v4l2_capability *cap)
476 {
477 struct rtl2832_sdr_dev *dev = video_drvdata(file);
478 struct platform_device *pdev = dev->pdev;
479
480 dev_dbg(&pdev->dev, "\n");
481
482 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
483 strlcpy(cap->card, dev->vdev.name, sizeof(cap->card));
484 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
485 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
486 V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
487 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
488 return 0;
489 }
490
491 /* Videobuf2 operations */
492 static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
493 unsigned int *nbuffers,
494 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[])
495 {
496 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
497 struct platform_device *pdev = dev->pdev;
498
499 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
500
501 /* Need at least 8 buffers */
502 if (vq->num_buffers + *nbuffers < 8)
503 *nbuffers = 8 - vq->num_buffers;
504 *nplanes = 1;
505 sizes[0] = PAGE_ALIGN(dev->buffersize);
506 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
507 return 0;
508 }
509
510 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb)
511 {
512 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
513
514 /* Don't allow queing new buffers after device disconnection */
515 if (!dev->udev)
516 return -ENODEV;
517
518 return 0;
519 }
520
521 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb)
522 {
523 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
524 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
525 struct rtl2832_sdr_frame_buf *buf =
526 container_of(vbuf, struct rtl2832_sdr_frame_buf, vb);
527 unsigned long flags;
528
529 /* Check the device has not disconnected between prep and queuing */
530 if (!dev->udev) {
531 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
532 return;
533 }
534
535 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
536 list_add_tail(&buf->list, &dev->queued_bufs);
537 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
538 }
539
540 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev)
541 {
542 struct platform_device *pdev = dev->pdev;
543 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
544 struct dvb_frontend *fe = pdata->dvb_frontend;
545 int ret;
546 unsigned int f_sr, f_if;
547 u8 buf[4], u8tmp1, u8tmp2;
548 u64 u64tmp;
549 u32 u32tmp;
550
551 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc);
552
553 if (!test_bit(POWER_ON, &dev->flags))
554 return 0;
555
556 if (dev->f_adc == 0)
557 return 0;
558
559 f_sr = dev->f_adc;
560
561 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x00\x00", 2);
562 if (ret)
563 goto err;
564
565 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x00\x00\x00\x00", 4);
566 if (ret)
567 goto err;
568
569 /* get IF from tuner */
570 if (fe->ops.tuner_ops.get_if_frequency)
571 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if);
572 else
573 ret = -EINVAL;
574
575 if (ret)
576 goto err;
577
578 /* program IF */
579 u64tmp = f_if % pdata->clk;
580 u64tmp *= 0x400000;
581 u64tmp = div_u64(u64tmp, pdata->clk);
582 u64tmp = -u64tmp;
583 u32tmp = u64tmp & 0x3fffff;
584
585 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp);
586
587 buf[0] = (u32tmp >> 16) & 0xff;
588 buf[1] = (u32tmp >> 8) & 0xff;
589 buf[2] = (u32tmp >> 0) & 0xff;
590
591 ret = rtl2832_sdr_wr_regs(dev, 0x119, buf, 3);
592 if (ret)
593 goto err;
594
595 /* BB / IF mode */
596 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */
597 if (f_if) {
598 u8tmp1 = 0x1a; /* disable Zero-IF */
599 u8tmp2 = 0x8d; /* enable ADC I */
600 } else {
601 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */
602 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */
603 }
604
605 ret = rtl2832_sdr_wr_reg(dev, 0x1b1, u8tmp1);
606 if (ret)
607 goto err;
608
609 ret = rtl2832_sdr_wr_reg(dev, 0x008, u8tmp2);
610 if (ret)
611 goto err;
612
613 ret = rtl2832_sdr_wr_reg(dev, 0x006, 0x80);
614 if (ret)
615 goto err;
616
617 /* program sampling rate (resampling down) */
618 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U);
619 u32tmp <<= 2;
620 buf[0] = (u32tmp >> 24) & 0xff;
621 buf[1] = (u32tmp >> 16) & 0xff;
622 buf[2] = (u32tmp >> 8) & 0xff;
623 buf[3] = (u32tmp >> 0) & 0xff;
624 ret = rtl2832_sdr_wr_regs(dev, 0x19f, buf, 4);
625 if (ret)
626 goto err;
627
628 /* low-pass filter */
629 ret = rtl2832_sdr_wr_regs(dev, 0x11c,
630 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5",
631 20);
632 if (ret)
633 goto err;
634
635 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2);
636 if (ret)
637 goto err;
638
639 /* mode */
640 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x05", 1);
641 if (ret)
642 goto err;
643
644 ret = rtl2832_sdr_wr_regs(dev, 0x01a, "\x1b\x16\x0d\x06\x01\xff", 6);
645 if (ret)
646 goto err;
647
648 /* FSM */
649 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\xf0\x0f", 3);
650 if (ret)
651 goto err;
652
653 /* PID filter */
654 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\x60", 1);
655 if (ret)
656 goto err;
657
658 /* used RF tuner based settings */
659 switch (pdata->tuner) {
660 case RTL2832_SDR_TUNER_E4000:
661 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
662 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
663 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1);
664 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x30", 1);
665 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xd0", 1);
666 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
667 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x18", 1);
668 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
669 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
670 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
671 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
672 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
673 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
674 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
675 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
676 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
677 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
678 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
679 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
680 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
681 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xd4", 1);
682 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1);
683 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1);
684 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1);
685 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x14", 1);
686 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xec", 1);
687 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1);
688 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1);
689 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1);
690 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x83", 1);
691 ret = rtl2832_sdr_wr_regs(dev, 0x010, "\x49", 1);
692 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x87", 1);
693 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x85", 1);
694 ret = rtl2832_sdr_wr_regs(dev, 0x013, "\x02", 1);
695 break;
696 case RTL2832_SDR_TUNER_FC0012:
697 case RTL2832_SDR_TUNER_FC0013:
698 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
699 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
700 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1);
701 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x2c", 1);
702 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1);
703 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
704 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x16", 1);
705 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
706 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
707 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
708 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
709 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
710 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
711 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
712 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
713 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
714 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
715 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
716 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
717 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
718 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xe9\xbf", 2);
719 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1);
720 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1);
721 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1);
722 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x11", 1);
723 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xef", 1);
724 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1);
725 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1);
726 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1);
727 break;
728 case RTL2832_SDR_TUNER_R820T:
729 case RTL2832_SDR_TUNER_R828D:
730 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
731 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
732 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x01", 1);
733 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x80", 1);
734 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x24", 1);
735 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1);
736 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
737 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x14", 1);
738 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
739 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
740 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
741 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
742 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
743 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
744 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
745 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
746 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
747 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
748 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
749 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
750 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
751 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xf4", 1);
752 break;
753 case RTL2832_SDR_TUNER_FC2580:
754 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x39", 1);
755 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
756 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1);
757 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x2c", 1);
758 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1);
759 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
760 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x16", 1);
761 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
762 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
763 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
764 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
765 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
766 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
767 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
768 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
769 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
770 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x9c", 1);
771 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
772 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
773 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
774 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xe9\xf4", 2);
775 break;
776 default:
777 dev_notice(&pdev->dev, "Unsupported tuner\n");
778 }
779
780 /* software reset */
781 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x04, 0x04);
782 if (ret)
783 goto err;
784
785 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x00, 0x04);
786 if (ret)
787 goto err;
788 err:
789 return ret;
790 };
791
792 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev)
793 {
794 struct platform_device *pdev = dev->pdev;
795 int ret;
796
797 dev_dbg(&pdev->dev, "\n");
798
799 /* PID filter */
800 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\xe0", 1);
801 if (ret)
802 goto err;
803
804 /* mode */
805 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x20", 1);
806 if (ret)
807 goto err;
808
809 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2);
810 if (ret)
811 goto err;
812
813 /* FSM */
814 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\x0f\xff", 3);
815 if (ret)
816 goto err;
817
818 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x40\x00", 2);
819 if (ret)
820 goto err;
821
822 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x06\x3f\xce\xcc", 4);
823 if (ret)
824 goto err;
825 err:
826 return;
827 };
828
829 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev)
830 {
831 struct platform_device *pdev = dev->pdev;
832 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
833 struct dvb_frontend *fe = pdata->dvb_frontend;
834 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
835 struct v4l2_ctrl *bandwidth_auto;
836 struct v4l2_ctrl *bandwidth;
837
838 /*
839 * tuner RF (Hz)
840 */
841 if (dev->f_tuner == 0)
842 return 0;
843
844 /*
845 * bandwidth (Hz)
846 */
847 bandwidth_auto = v4l2_ctrl_find(&dev->hdl,
848 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO);
849 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH);
850 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) {
851 c->bandwidth_hz = dev->f_adc;
852 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc);
853 } else {
854 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth);
855 }
856
857 c->frequency = dev->f_tuner;
858 c->delivery_system = SYS_DVBT;
859
860 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n",
861 c->frequency, c->bandwidth_hz);
862
863 if (!test_bit(POWER_ON, &dev->flags))
864 return 0;
865
866 if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) {
867 if (fe->ops.tuner_ops.set_params)
868 fe->ops.tuner_ops.set_params(fe);
869 }
870
871 return 0;
872 };
873
874 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev)
875 {
876 struct platform_device *pdev = dev->pdev;
877 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
878 struct dvb_frontend *fe = pdata->dvb_frontend;
879
880 dev_dbg(&pdev->dev, "\n");
881
882 if (fe->ops.tuner_ops.init)
883 fe->ops.tuner_ops.init(fe);
884
885 return 0;
886 };
887
888 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev)
889 {
890 struct platform_device *pdev = dev->pdev;
891 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
892 struct dvb_frontend *fe = pdata->dvb_frontend;
893
894 dev_dbg(&pdev->dev, "\n");
895
896 if (fe->ops.tuner_ops.sleep)
897 fe->ops.tuner_ops.sleep(fe);
898
899 return;
900 };
901
902 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count)
903 {
904 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
905 struct platform_device *pdev = dev->pdev;
906 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
907 struct dvb_usb_device *d = pdata->dvb_usb_device;
908 int ret;
909
910 dev_dbg(&pdev->dev, "\n");
911
912 if (!dev->udev)
913 return -ENODEV;
914
915 if (mutex_lock_interruptible(&dev->v4l2_lock))
916 return -ERESTARTSYS;
917
918 if (d->props->power_ctrl)
919 d->props->power_ctrl(d, 1);
920
921 /* enable ADC */
922 if (d->props->frontend_ctrl)
923 d->props->frontend_ctrl(pdata->dvb_frontend, 1);
924
925 set_bit(POWER_ON, &dev->flags);
926
927 /* wake-up tuner */
928 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power))
929 ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1);
930 else
931 ret = rtl2832_sdr_set_tuner(dev);
932 if (ret)
933 goto err;
934
935 ret = rtl2832_sdr_set_tuner_freq(dev);
936 if (ret)
937 goto err;
938
939 ret = rtl2832_sdr_set_adc(dev);
940 if (ret)
941 goto err;
942
943 ret = rtl2832_sdr_alloc_stream_bufs(dev);
944 if (ret)
945 goto err;
946
947 ret = rtl2832_sdr_alloc_urbs(dev);
948 if (ret)
949 goto err;
950
951 dev->sequence = 0;
952
953 ret = rtl2832_sdr_submit_urbs(dev);
954 if (ret)
955 goto err;
956
957 err:
958 mutex_unlock(&dev->v4l2_lock);
959
960 return ret;
961 }
962
963 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq)
964 {
965 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
966 struct platform_device *pdev = dev->pdev;
967 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
968 struct dvb_usb_device *d = pdata->dvb_usb_device;
969
970 dev_dbg(&pdev->dev, "\n");
971
972 mutex_lock(&dev->v4l2_lock);
973
974 rtl2832_sdr_kill_urbs(dev);
975 rtl2832_sdr_free_urbs(dev);
976 rtl2832_sdr_free_stream_bufs(dev);
977 rtl2832_sdr_cleanup_queued_bufs(dev);
978 rtl2832_sdr_unset_adc(dev);
979
980 /* sleep tuner */
981 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power))
982 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0);
983 else
984 rtl2832_sdr_unset_tuner(dev);
985
986 clear_bit(POWER_ON, &dev->flags);
987
988 /* disable ADC */
989 if (d->props->frontend_ctrl)
990 d->props->frontend_ctrl(pdata->dvb_frontend, 0);
991
992 if (d->props->power_ctrl)
993 d->props->power_ctrl(d, 0);
994
995 mutex_unlock(&dev->v4l2_lock);
996 }
997
998 static struct vb2_ops rtl2832_sdr_vb2_ops = {
999 .queue_setup = rtl2832_sdr_queue_setup,
1000 .buf_prepare = rtl2832_sdr_buf_prepare,
1001 .buf_queue = rtl2832_sdr_buf_queue,
1002 .start_streaming = rtl2832_sdr_start_streaming,
1003 .stop_streaming = rtl2832_sdr_stop_streaming,
1004 .wait_prepare = vb2_ops_wait_prepare,
1005 .wait_finish = vb2_ops_wait_finish,
1006 };
1007
1008 static int rtl2832_sdr_g_tuner(struct file *file, void *priv,
1009 struct v4l2_tuner *v)
1010 {
1011 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1012 struct platform_device *pdev = dev->pdev;
1013 int ret;
1014
1015 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type);
1016
1017 if (v->index == 0) {
1018 strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
1019 v->type = V4L2_TUNER_ADC;
1020 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
1021 v->rangelow = 300000;
1022 v->rangehigh = 3200000;
1023 ret = 0;
1024 } else if (v->index == 1 &&
1025 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) {
1026 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v);
1027 } else if (v->index == 1) {
1028 strlcpy(v->name, "RF: <unknown>", sizeof(v->name));
1029 v->type = V4L2_TUNER_RF;
1030 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
1031 v->rangelow = 50000000;
1032 v->rangehigh = 2000000000;
1033 ret = 0;
1034 } else {
1035 ret = -EINVAL;
1036 }
1037 return ret;
1038 }
1039
1040 static int rtl2832_sdr_s_tuner(struct file *file, void *priv,
1041 const struct v4l2_tuner *v)
1042 {
1043 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1044 struct platform_device *pdev = dev->pdev;
1045 int ret;
1046
1047 dev_dbg(&pdev->dev, "\n");
1048
1049 if (v->index == 0) {
1050 ret = 0;
1051 } else if (v->index == 1 &&
1052 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) {
1053 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v);
1054 } else if (v->index == 1) {
1055 ret = 0;
1056 } else {
1057 ret = -EINVAL;
1058 }
1059 return ret;
1060 }
1061
1062 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv,
1063 struct v4l2_frequency_band *band)
1064 {
1065 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1066 struct platform_device *pdev = dev->pdev;
1067 int ret;
1068
1069 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n",
1070 band->tuner, band->type, band->index);
1071
1072 if (band->tuner == 0) {
1073 if (band->index >= ARRAY_SIZE(bands_adc))
1074 return -EINVAL;
1075
1076 *band = bands_adc[band->index];
1077 ret = 0;
1078 } else if (band->tuner == 1 &&
1079 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) {
1080 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band);
1081 } else if (band->tuner == 1) {
1082 if (band->index >= ARRAY_SIZE(bands_fm))
1083 return -EINVAL;
1084
1085 *band = bands_fm[band->index];
1086 ret = 0;
1087 } else {
1088 ret = -EINVAL;
1089 }
1090 return ret;
1091 }
1092
1093 static int rtl2832_sdr_g_frequency(struct file *file, void *priv,
1094 struct v4l2_frequency *f)
1095 {
1096 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1097 struct platform_device *pdev = dev->pdev;
1098 int ret;
1099
1100 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type);
1101
1102 if (f->tuner == 0) {
1103 f->frequency = dev->f_adc;
1104 f->type = V4L2_TUNER_ADC;
1105 ret = 0;
1106 } else if (f->tuner == 1 &&
1107 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) {
1108 f->type = V4L2_TUNER_RF;
1109 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f);
1110 } else if (f->tuner == 1) {
1111 f->frequency = dev->f_tuner;
1112 f->type = V4L2_TUNER_RF;
1113 ret = 0;
1114 } else {
1115 ret = -EINVAL;
1116 }
1117 return ret;
1118 }
1119
1120 static int rtl2832_sdr_s_frequency(struct file *file, void *priv,
1121 const struct v4l2_frequency *f)
1122 {
1123 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1124 struct platform_device *pdev = dev->pdev;
1125 int ret, band;
1126
1127 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n",
1128 f->tuner, f->type, f->frequency);
1129
1130 /* ADC band midpoints */
1131 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2)
1132 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2)
1133
1134 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) {
1135 if (f->frequency < BAND_ADC_0)
1136 band = 0;
1137 else if (f->frequency < BAND_ADC_1)
1138 band = 1;
1139 else
1140 band = 2;
1141
1142 dev->f_adc = clamp_t(unsigned int, f->frequency,
1143 bands_adc[band].rangelow,
1144 bands_adc[band].rangehigh);
1145
1146 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc);
1147 ret = rtl2832_sdr_set_adc(dev);
1148 } else if (f->tuner == 1 &&
1149 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) {
1150 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f);
1151 } else if (f->tuner == 1) {
1152 dev->f_tuner = clamp_t(unsigned int, f->frequency,
1153 bands_fm[0].rangelow,
1154 bands_fm[0].rangehigh);
1155 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency);
1156
1157 ret = rtl2832_sdr_set_tuner_freq(dev);
1158 } else {
1159 ret = -EINVAL;
1160 }
1161 return ret;
1162 }
1163
1164 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,
1165 struct v4l2_fmtdesc *f)
1166 {
1167 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1168 struct platform_device *pdev = dev->pdev;
1169
1170 dev_dbg(&pdev->dev, "\n");
1171
1172 if (f->index >= dev->num_formats)
1173 return -EINVAL;
1174
1175 strlcpy(f->description, formats[f->index].name, sizeof(f->description));
1176 f->pixelformat = formats[f->index].pixelformat;
1177
1178 return 0;
1179 }
1180
1181 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv,
1182 struct v4l2_format *f)
1183 {
1184 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1185 struct platform_device *pdev = dev->pdev;
1186
1187 dev_dbg(&pdev->dev, "\n");
1188
1189 f->fmt.sdr.pixelformat = dev->pixelformat;
1190 f->fmt.sdr.buffersize = dev->buffersize;
1191
1192 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1193
1194 return 0;
1195 }
1196
1197 static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,
1198 struct v4l2_format *f)
1199 {
1200 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1201 struct platform_device *pdev = dev->pdev;
1202 struct vb2_queue *q = &dev->vb_queue;
1203 int i;
1204
1205 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",
1206 (char *)&f->fmt.sdr.pixelformat);
1207
1208 if (vb2_is_busy(q))
1209 return -EBUSY;
1210
1211 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1212 for (i = 0; i < dev->num_formats; i++) {
1213 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1214 dev->pixelformat = formats[i].pixelformat;
1215 dev->buffersize = formats[i].buffersize;
1216 f->fmt.sdr.buffersize = formats[i].buffersize;
1217 return 0;
1218 }
1219 }
1220
1221 dev->pixelformat = formats[0].pixelformat;
1222 dev->buffersize = formats[0].buffersize;
1223 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1224 f->fmt.sdr.buffersize = formats[0].buffersize;
1225
1226 return 0;
1227 }
1228
1229 static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,
1230 struct v4l2_format *f)
1231 {
1232 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1233 struct platform_device *pdev = dev->pdev;
1234 int i;
1235
1236 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",
1237 (char *)&f->fmt.sdr.pixelformat);
1238
1239 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1240 for (i = 0; i < dev->num_formats; i++) {
1241 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1242 f->fmt.sdr.buffersize = formats[i].buffersize;
1243 return 0;
1244 }
1245 }
1246
1247 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1248 f->fmt.sdr.buffersize = formats[0].buffersize;
1249
1250 return 0;
1251 }
1252
1253 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = {
1254 .vidioc_querycap = rtl2832_sdr_querycap,
1255
1256 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap,
1257 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap,
1258 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap,
1259 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap,
1260
1261 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1262 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1263 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1264 .vidioc_querybuf = vb2_ioctl_querybuf,
1265 .vidioc_qbuf = vb2_ioctl_qbuf,
1266 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1267
1268 .vidioc_streamon = vb2_ioctl_streamon,
1269 .vidioc_streamoff = vb2_ioctl_streamoff,
1270
1271 .vidioc_g_tuner = rtl2832_sdr_g_tuner,
1272 .vidioc_s_tuner = rtl2832_sdr_s_tuner,
1273
1274 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands,
1275 .vidioc_g_frequency = rtl2832_sdr_g_frequency,
1276 .vidioc_s_frequency = rtl2832_sdr_s_frequency,
1277
1278 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1279 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1280 .vidioc_log_status = v4l2_ctrl_log_status,
1281 };
1282
1283 static const struct v4l2_file_operations rtl2832_sdr_fops = {
1284 .owner = THIS_MODULE,
1285 .open = v4l2_fh_open,
1286 .release = vb2_fop_release,
1287 .read = vb2_fop_read,
1288 .poll = vb2_fop_poll,
1289 .mmap = vb2_fop_mmap,
1290 .unlocked_ioctl = video_ioctl2,
1291 };
1292
1293 static struct video_device rtl2832_sdr_template = {
1294 .name = "Realtek RTL2832 SDR",
1295 .release = video_device_release_empty,
1296 .fops = &rtl2832_sdr_fops,
1297 .ioctl_ops = &rtl2832_sdr_ioctl_ops,
1298 };
1299
1300 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
1301 {
1302 struct rtl2832_sdr_dev *dev =
1303 container_of(ctrl->handler, struct rtl2832_sdr_dev,
1304 hdl);
1305 struct platform_device *pdev = dev->pdev;
1306 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
1307 struct dvb_frontend *fe = pdata->dvb_frontend;
1308 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1309 int ret;
1310
1311 dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n",
1312 ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum,
1313 ctrl->step);
1314
1315 switch (ctrl->id) {
1316 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
1317 case V4L2_CID_RF_TUNER_BANDWIDTH:
1318 /* TODO: these controls should be moved to tuner drivers */
1319 if (dev->bandwidth_auto->val) {
1320 /* Round towards the closest legal value */
1321 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2);
1322 u32 offset;
1323
1324 val = clamp_t(s32, val, dev->bandwidth->minimum,
1325 dev->bandwidth->maximum);
1326 offset = val - dev->bandwidth->minimum;
1327 offset = dev->bandwidth->step *
1328 div_u64(offset, dev->bandwidth->step);
1329 dev->bandwidth->val = dev->bandwidth->minimum + offset;
1330 }
1331 c->bandwidth_hz = dev->bandwidth->val;
1332
1333 if (!test_bit(POWER_ON, &dev->flags))
1334 return 0;
1335
1336 if (fe->ops.tuner_ops.set_params)
1337 ret = fe->ops.tuner_ops.set_params(fe);
1338 else
1339 ret = 0;
1340 break;
1341 default:
1342 ret = -EINVAL;
1343 }
1344
1345 return ret;
1346 }
1347
1348 static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = {
1349 .s_ctrl = rtl2832_sdr_s_ctrl,
1350 };
1351
1352 static void rtl2832_sdr_video_release(struct v4l2_device *v)
1353 {
1354 struct rtl2832_sdr_dev *dev =
1355 container_of(v, struct rtl2832_sdr_dev, v4l2_dev);
1356 struct platform_device *pdev = dev->pdev;
1357
1358 dev_dbg(&pdev->dev, "\n");
1359
1360 v4l2_ctrl_handler_free(&dev->hdl);
1361 v4l2_device_unregister(&dev->v4l2_dev);
1362 kfree(dev);
1363 }
1364
1365 /* Platform driver interface */
1366 static int rtl2832_sdr_probe(struct platform_device *pdev)
1367 {
1368 struct rtl2832_sdr_dev *dev;
1369 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
1370 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops;
1371 struct v4l2_subdev *subdev;
1372 int ret;
1373
1374 dev_dbg(&pdev->dev, "\n");
1375
1376 if (!pdata) {
1377 dev_err(&pdev->dev, "Cannot proceed without platform data\n");
1378 ret = -EINVAL;
1379 goto err;
1380 }
1381 if (!pdev->dev.parent->driver) {
1382 dev_dbg(&pdev->dev, "No parent device\n");
1383 ret = -EINVAL;
1384 goto err;
1385 }
1386 /* try to refcount host drv since we are the consumer */
1387 if (!try_module_get(pdev->dev.parent->driver->owner)) {
1388 dev_err(&pdev->dev, "Refcount fail");
1389 ret = -EINVAL;
1390 goto err;
1391 }
1392 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1393 if (dev == NULL) {
1394 ret = -ENOMEM;
1395 goto err_module_put;
1396 }
1397
1398 /* setup the state */
1399 subdev = pdata->v4l2_subdev;
1400 dev->v4l2_subdev = pdata->v4l2_subdev;
1401 dev->pdev = pdev;
1402 dev->udev = pdata->dvb_usb_device->udev;
1403 dev->f_adc = bands_adc[0].rangelow;
1404 dev->f_tuner = bands_fm[0].rangelow;
1405 dev->pixelformat = formats[0].pixelformat;
1406 dev->buffersize = formats[0].buffersize;
1407 dev->num_formats = NUM_FORMATS;
1408 if (!rtl2832_sdr_emulated_fmt)
1409 dev->num_formats -= 1;
1410
1411 mutex_init(&dev->v4l2_lock);
1412 mutex_init(&dev->vb_queue_lock);
1413 spin_lock_init(&dev->queued_bufs_lock);
1414 INIT_LIST_HEAD(&dev->queued_bufs);
1415
1416 /* Init videobuf2 queue structure */
1417 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;
1418 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1419 dev->vb_queue.drv_priv = dev;
1420 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf);
1421 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops;
1422 dev->vb_queue.mem_ops = &vb2_vmalloc_memops;
1423 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1424 ret = vb2_queue_init(&dev->vb_queue);
1425 if (ret) {
1426 dev_err(&pdev->dev, "Could not initialize vb2 queue\n");
1427 goto err_kfree;
1428 }
1429
1430 /* Register controls */
1431 switch (pdata->tuner) {
1432 case RTL2832_SDR_TUNER_E4000:
1433 v4l2_ctrl_handler_init(&dev->hdl, 9);
1434 if (subdev)
1435 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, NULL);
1436 break;
1437 case RTL2832_SDR_TUNER_R820T:
1438 case RTL2832_SDR_TUNER_R828D:
1439 v4l2_ctrl_handler_init(&dev->hdl, 2);
1440 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1441 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1442 0, 1, 1, 1);
1443 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1444 V4L2_CID_RF_TUNER_BANDWIDTH,
1445 0, 8000000, 100000, 0);
1446 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1447 break;
1448 case RTL2832_SDR_TUNER_FC0012:
1449 case RTL2832_SDR_TUNER_FC0013:
1450 v4l2_ctrl_handler_init(&dev->hdl, 2);
1451 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1452 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1453 0, 1, 1, 1);
1454 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1455 V4L2_CID_RF_TUNER_BANDWIDTH,
1456 6000000, 8000000, 1000000,
1457 6000000);
1458 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1459 break;
1460 case RTL2832_SDR_TUNER_FC2580:
1461 v4l2_ctrl_handler_init(&dev->hdl, 2);
1462 if (subdev)
1463 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler,
1464 NULL);
1465 break;
1466 default:
1467 v4l2_ctrl_handler_init(&dev->hdl, 0);
1468 dev_err(&pdev->dev, "Unsupported tuner\n");
1469 goto err_v4l2_ctrl_handler_free;
1470 }
1471 if (dev->hdl.error) {
1472 ret = dev->hdl.error;
1473 dev_err(&pdev->dev, "Could not initialize controls\n");
1474 goto err_v4l2_ctrl_handler_free;
1475 }
1476
1477 /* Init video_device structure */
1478 dev->vdev = rtl2832_sdr_template;
1479 dev->vdev.queue = &dev->vb_queue;
1480 dev->vdev.queue->lock = &dev->vb_queue_lock;
1481 video_set_drvdata(&dev->vdev, dev);
1482
1483 /* Register the v4l2_device structure */
1484 dev->v4l2_dev.release = rtl2832_sdr_video_release;
1485 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1486 if (ret) {
1487 dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret);
1488 goto err_v4l2_ctrl_handler_free;
1489 }
1490
1491 dev->v4l2_dev.ctrl_handler = &dev->hdl;
1492 dev->vdev.v4l2_dev = &dev->v4l2_dev;
1493 dev->vdev.lock = &dev->v4l2_lock;
1494 dev->vdev.vfl_dir = VFL_DIR_RX;
1495
1496 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1);
1497 if (ret) {
1498 dev_err(&pdev->dev, "Failed to register as video device %d\n",
1499 ret);
1500 goto err_v4l2_device_unregister;
1501 }
1502 dev_info(&pdev->dev, "Registered as %s\n",
1503 video_device_node_name(&dev->vdev));
1504 dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n");
1505 dev_notice(&pdev->dev,
1506 "SDR API is still slightly experimental and functionality changes may follow\n");
1507 platform_set_drvdata(pdev, dev);
1508 return 0;
1509 err_v4l2_device_unregister:
1510 v4l2_device_unregister(&dev->v4l2_dev);
1511 err_v4l2_ctrl_handler_free:
1512 v4l2_ctrl_handler_free(&dev->hdl);
1513 err_kfree:
1514 kfree(dev);
1515 err_module_put:
1516 module_put(pdev->dev.parent->driver->owner);
1517 err:
1518 return ret;
1519 }
1520
1521 static int rtl2832_sdr_remove(struct platform_device *pdev)
1522 {
1523 struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev);
1524
1525 dev_dbg(&pdev->dev, "\n");
1526
1527 mutex_lock(&dev->vb_queue_lock);
1528 mutex_lock(&dev->v4l2_lock);
1529 /* No need to keep the urbs around after disconnection */
1530 dev->udev = NULL;
1531 v4l2_device_disconnect(&dev->v4l2_dev);
1532 video_unregister_device(&dev->vdev);
1533 mutex_unlock(&dev->v4l2_lock);
1534 mutex_unlock(&dev->vb_queue_lock);
1535 v4l2_device_put(&dev->v4l2_dev);
1536 module_put(pdev->dev.parent->driver->owner);
1537
1538 return 0;
1539 }
1540
1541 static struct platform_driver rtl2832_sdr_driver = {
1542 .driver = {
1543 .name = "rtl2832_sdr",
1544 },
1545 .probe = rtl2832_sdr_probe,
1546 .remove = rtl2832_sdr_remove,
1547 };
1548 module_platform_driver(rtl2832_sdr_driver);
1549
1550 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1551 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver");
1552 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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