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Merge tag 'cpumask-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-artful-kernel.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-vmalloc.h>
33
34 #include <linux/platform_device.h>
35 #include <linux/jiffies.h>
36 #include <linux/math64.h>
37
38 static bool rtl2832_sdr_emulated_fmt;
39 module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644);
40 MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
41
42 #define MAX_BULK_BUFS (10)
43 #define BULK_BUFFER_SIZE (128 * 512)
44
45 static const struct v4l2_frequency_band bands_adc[] = {
46 {
47 .tuner = 0,
48 .type = V4L2_TUNER_ADC,
49 .index = 0,
50 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
51 .rangelow = 300000,
52 .rangehigh = 300000,
53 },
54 {
55 .tuner = 0,
56 .type = V4L2_TUNER_ADC,
57 .index = 1,
58 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
59 .rangelow = 900001,
60 .rangehigh = 2800000,
61 },
62 {
63 .tuner = 0,
64 .type = V4L2_TUNER_ADC,
65 .index = 2,
66 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
67 .rangelow = 3200000,
68 .rangehigh = 3200000,
69 },
70 };
71
72 static const struct v4l2_frequency_band bands_fm[] = {
73 {
74 .tuner = 1,
75 .type = V4L2_TUNER_RF,
76 .index = 0,
77 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
78 .rangelow = 50000000,
79 .rangehigh = 2000000000,
80 },
81 };
82
83 /* stream formats */
84 struct rtl2832_sdr_format {
85 char *name;
86 u32 pixelformat;
87 u32 buffersize;
88 };
89
90 static struct rtl2832_sdr_format formats[] = {
91 {
92 .name = "Complex U8",
93 .pixelformat = V4L2_SDR_FMT_CU8,
94 .buffersize = BULK_BUFFER_SIZE,
95 }, {
96 .name = "Complex U16LE (emulated)",
97 .pixelformat = V4L2_SDR_FMT_CU16LE,
98 .buffersize = BULK_BUFFER_SIZE * 2,
99 },
100 };
101
102 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
103
104 /* intermediate buffers with raw data from the USB device */
105 struct rtl2832_sdr_frame_buf {
106 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */
107 struct list_head list;
108 };
109
110 struct rtl2832_sdr_dev {
111 #define POWER_ON (1 << 1)
112 #define URB_BUF (1 << 2)
113 unsigned long flags;
114
115 struct platform_device *pdev;
116
117 struct video_device vdev;
118 struct v4l2_device v4l2_dev;
119
120 /* videobuf2 queue and queued buffers list */
121 struct vb2_queue vb_queue;
122 struct list_head queued_bufs;
123 spinlock_t queued_bufs_lock; /* Protects queued_bufs */
124 unsigned sequence; /* buffer sequence counter */
125
126 /* Note if taking both locks v4l2_lock must always be locked first! */
127 struct mutex v4l2_lock; /* Protects everything else */
128 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
129
130 /* Pointer to our usb_device, will be NULL after unplug */
131 struct usb_device *udev; /* Both mutexes most be hold when setting! */
132
133 unsigned int vb_full; /* vb is full and packets dropped */
134
135 struct urb *urb_list[MAX_BULK_BUFS];
136 int buf_num;
137 unsigned long buf_size;
138 u8 *buf_list[MAX_BULK_BUFS];
139 dma_addr_t dma_addr[MAX_BULK_BUFS];
140 int urbs_initialized;
141 int urbs_submitted;
142
143 unsigned int f_adc, f_tuner;
144 u32 pixelformat;
145 u32 buffersize;
146 unsigned int num_formats;
147
148 /* Controls */
149 struct v4l2_ctrl_handler hdl;
150 struct v4l2_ctrl *bandwidth_auto;
151 struct v4l2_ctrl *bandwidth;
152
153 /* for sample rate calc */
154 unsigned int sample;
155 unsigned int sample_measured;
156 unsigned long jiffies_next;
157 };
158
159 /* write multiple registers */
160 static int rtl2832_sdr_wr_regs(struct rtl2832_sdr_dev *dev, u16 reg,
161 const u8 *val, int len)
162 {
163 struct platform_device *pdev = dev->pdev;
164 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
165 struct i2c_client *client = pdata->i2c_client;
166
167 return pdata->bulk_write(client, reg, val, len);
168 }
169
170 #if 0
171 /* read multiple registers */
172 static int rtl2832_sdr_rd_regs(struct rtl2832_sdr_dev *dev, u16 reg, u8 *val,
173 int len)
174 {
175 struct platform_device *pdev = dev->pdev;
176 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
177 struct i2c_client *client = pdata->i2c_client;
178
179 return pdata->bulk_read(client, reg, val, len);
180 }
181 #endif
182
183 /* write single register */
184 static int rtl2832_sdr_wr_reg(struct rtl2832_sdr_dev *dev, u16 reg, u8 val)
185 {
186 return rtl2832_sdr_wr_regs(dev, reg, &val, 1);
187 }
188
189 /* write single register with mask */
190 static int rtl2832_sdr_wr_reg_mask(struct rtl2832_sdr_dev *dev, u16 reg,
191 u8 val, u8 mask)
192 {
193 struct platform_device *pdev = dev->pdev;
194 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
195 struct i2c_client *client = pdata->i2c_client;
196
197 return pdata->update_bits(client, reg, mask, val);
198 }
199
200 /* Private functions */
201 static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf(
202 struct rtl2832_sdr_dev *dev)
203 {
204 unsigned long flags;
205 struct rtl2832_sdr_frame_buf *buf = NULL;
206
207 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
208 if (list_empty(&dev->queued_bufs))
209 goto leave;
210
211 buf = list_entry(dev->queued_bufs.next,
212 struct rtl2832_sdr_frame_buf, list);
213 list_del(&buf->list);
214 leave:
215 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
216 return buf;
217 }
218
219 static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev,
220 void *dst, const u8 *src, unsigned int src_len)
221 {
222 struct platform_device *pdev = dev->pdev;
223 unsigned int dst_len;
224
225 if (dev->pixelformat == V4L2_SDR_FMT_CU8) {
226 /* native stream, no need to convert */
227 memcpy(dst, src, src_len);
228 dst_len = src_len;
229 } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) {
230 /* convert u8 to u16 */
231 unsigned int i;
232 u16 *u16dst = dst;
233
234 for (i = 0; i < src_len; i++)
235 *u16dst++ = (src[i] << 8) | (src[i] >> 0);
236 dst_len = 2 * src_len;
237 } else {
238 dst_len = 0;
239 }
240
241 /* calculate sample rate and output it in 10 seconds intervals */
242 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) {
243 #define MSECS 10000UL
244 unsigned int msecs = jiffies_to_msecs(jiffies -
245 dev->jiffies_next + msecs_to_jiffies(MSECS));
246 unsigned int samples = dev->sample - dev->sample_measured;
247
248 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
249 dev->sample_measured = dev->sample;
250 dev_dbg(&pdev->dev,
251 "slen=%u samples=%u msecs=%u sample rate=%lu\n",
252 src_len, samples, msecs, samples * 1000UL / msecs);
253 }
254
255 /* total number of I+Q pairs */
256 dev->sample += src_len / 2;
257
258 return dst_len;
259 }
260
261 /*
262 * This gets called for the bulk stream pipe. This is done in interrupt
263 * time, so it has to be fast, not crash, and not stall. Neat.
264 */
265 static void rtl2832_sdr_urb_complete(struct urb *urb)
266 {
267 struct rtl2832_sdr_dev *dev = urb->context;
268 struct platform_device *pdev = dev->pdev;
269 struct rtl2832_sdr_frame_buf *fbuf;
270
271 dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n",
272 urb->status, urb->actual_length,
273 urb->transfer_buffer_length, urb->error_count);
274
275 switch (urb->status) {
276 case 0: /* success */
277 case -ETIMEDOUT: /* NAK */
278 break;
279 case -ECONNRESET: /* kill */
280 case -ENOENT:
281 case -ESHUTDOWN:
282 return;
283 default: /* error */
284 dev_err_ratelimited(&pdev->dev, "urb failed=%d\n", urb->status);
285 break;
286 }
287
288 if (likely(urb->actual_length > 0)) {
289 void *ptr;
290 unsigned int len;
291 /* get free framebuffer */
292 fbuf = rtl2832_sdr_get_next_fill_buf(dev);
293 if (unlikely(fbuf == NULL)) {
294 dev->vb_full++;
295 dev_notice_ratelimited(&pdev->dev,
296 "videobuf is full, %d packets dropped\n",
297 dev->vb_full);
298 goto skip;
299 }
300
301 /* fill framebuffer */
302 ptr = vb2_plane_vaddr(&fbuf->vb, 0);
303 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer,
304 urb->actual_length);
305 vb2_set_plane_payload(&fbuf->vb, 0, len);
306 v4l2_get_timestamp(&fbuf->vb.v4l2_buf.timestamp);
307 fbuf->vb.v4l2_buf.sequence = dev->sequence++;
308 vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE);
309 }
310 skip:
311 usb_submit_urb(urb, GFP_ATOMIC);
312 }
313
314 static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev)
315 {
316 struct platform_device *pdev = dev->pdev;
317 int i;
318
319 for (i = dev->urbs_submitted - 1; i >= 0; i--) {
320 dev_dbg(&pdev->dev, "kill urb=%d\n", i);
321 /* stop the URB */
322 usb_kill_urb(dev->urb_list[i]);
323 }
324 dev->urbs_submitted = 0;
325
326 return 0;
327 }
328
329 static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev)
330 {
331 struct platform_device *pdev = dev->pdev;
332 int i, ret;
333
334 for (i = 0; i < dev->urbs_initialized; i++) {
335 dev_dbg(&pdev->dev, "submit urb=%d\n", i);
336 ret = usb_submit_urb(dev->urb_list[i], GFP_ATOMIC);
337 if (ret) {
338 dev_err(&pdev->dev,
339 "Could not submit urb no. %d - get them all back\n",
340 i);
341 rtl2832_sdr_kill_urbs(dev);
342 return ret;
343 }
344 dev->urbs_submitted++;
345 }
346
347 return 0;
348 }
349
350 static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev)
351 {
352 struct platform_device *pdev = dev->pdev;
353
354 if (dev->flags & USB_STATE_URB_BUF) {
355 while (dev->buf_num) {
356 dev->buf_num--;
357 dev_dbg(&pdev->dev, "free buf=%d\n", dev->buf_num);
358 usb_free_coherent(dev->udev, dev->buf_size,
359 dev->buf_list[dev->buf_num],
360 dev->dma_addr[dev->buf_num]);
361 }
362 }
363 dev->flags &= ~USB_STATE_URB_BUF;
364
365 return 0;
366 }
367
368 static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev)
369 {
370 struct platform_device *pdev = dev->pdev;
371
372 dev->buf_num = 0;
373 dev->buf_size = BULK_BUFFER_SIZE;
374
375 dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n",
376 MAX_BULK_BUFS * BULK_BUFFER_SIZE);
377
378 for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) {
379 dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev,
380 BULK_BUFFER_SIZE, GFP_ATOMIC,
381 &dev->dma_addr[dev->buf_num]);
382 if (!dev->buf_list[dev->buf_num]) {
383 dev_dbg(&pdev->dev, "alloc buf=%d failed\n",
384 dev->buf_num);
385 rtl2832_sdr_free_stream_bufs(dev);
386 return -ENOMEM;
387 }
388
389 dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n",
390 dev->buf_num, dev->buf_list[dev->buf_num],
391 (long long)dev->dma_addr[dev->buf_num]);
392 dev->flags |= USB_STATE_URB_BUF;
393 }
394
395 return 0;
396 }
397
398 static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev)
399 {
400 struct platform_device *pdev = dev->pdev;
401 int i;
402
403 rtl2832_sdr_kill_urbs(dev);
404
405 for (i = dev->urbs_initialized - 1; i >= 0; i--) {
406 if (dev->urb_list[i]) {
407 dev_dbg(&pdev->dev, "free urb=%d\n", i);
408 /* free the URBs */
409 usb_free_urb(dev->urb_list[i]);
410 }
411 }
412 dev->urbs_initialized = 0;
413
414 return 0;
415 }
416
417 static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev)
418 {
419 struct platform_device *pdev = dev->pdev;
420 int i, j;
421
422 /* allocate the URBs */
423 for (i = 0; i < MAX_BULK_BUFS; i++) {
424 dev_dbg(&pdev->dev, "alloc urb=%d\n", i);
425 dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC);
426 if (!dev->urb_list[i]) {
427 dev_dbg(&pdev->dev, "failed\n");
428 for (j = 0; j < i; j++)
429 usb_free_urb(dev->urb_list[j]);
430 return -ENOMEM;
431 }
432 usb_fill_bulk_urb(dev->urb_list[i],
433 dev->udev,
434 usb_rcvbulkpipe(dev->udev, 0x81),
435 dev->buf_list[i],
436 BULK_BUFFER_SIZE,
437 rtl2832_sdr_urb_complete, dev);
438
439 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
440 dev->urb_list[i]->transfer_dma = dev->dma_addr[i];
441 dev->urbs_initialized++;
442 }
443
444 return 0;
445 }
446
447 /* Must be called with vb_queue_lock hold */
448 static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev)
449 {
450 struct platform_device *pdev = dev->pdev;
451 unsigned long flags;
452
453 dev_dbg(&pdev->dev, "\n");
454
455 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
456 while (!list_empty(&dev->queued_bufs)) {
457 struct rtl2832_sdr_frame_buf *buf;
458
459 buf = list_entry(dev->queued_bufs.next,
460 struct rtl2832_sdr_frame_buf, list);
461 list_del(&buf->list);
462 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
463 }
464 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
465 }
466
467 static int rtl2832_sdr_querycap(struct file *file, void *fh,
468 struct v4l2_capability *cap)
469 {
470 struct rtl2832_sdr_dev *dev = video_drvdata(file);
471 struct platform_device *pdev = dev->pdev;
472
473 dev_dbg(&pdev->dev, "\n");
474
475 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
476 strlcpy(cap->card, dev->vdev.name, sizeof(cap->card));
477 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
478 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
479 V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
480 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
481 return 0;
482 }
483
484 /* Videobuf2 operations */
485 static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
486 const struct v4l2_format *fmt, unsigned int *nbuffers,
487 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[])
488 {
489 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
490 struct platform_device *pdev = dev->pdev;
491
492 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
493
494 /* Need at least 8 buffers */
495 if (vq->num_buffers + *nbuffers < 8)
496 *nbuffers = 8 - vq->num_buffers;
497 *nplanes = 1;
498 sizes[0] = PAGE_ALIGN(dev->buffersize);
499 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
500 return 0;
501 }
502
503 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb)
504 {
505 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
506
507 /* Don't allow queing new buffers after device disconnection */
508 if (!dev->udev)
509 return -ENODEV;
510
511 return 0;
512 }
513
514 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb)
515 {
516 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
517 struct rtl2832_sdr_frame_buf *buf =
518 container_of(vb, struct rtl2832_sdr_frame_buf, vb);
519 unsigned long flags;
520
521 /* Check the device has not disconnected between prep and queuing */
522 if (!dev->udev) {
523 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
524 return;
525 }
526
527 spin_lock_irqsave(&dev->queued_bufs_lock, flags);
528 list_add_tail(&buf->list, &dev->queued_bufs);
529 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
530 }
531
532 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev)
533 {
534 struct platform_device *pdev = dev->pdev;
535 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
536 struct dvb_frontend *fe = pdata->dvb_frontend;
537 int ret;
538 unsigned int f_sr, f_if;
539 u8 buf[4], u8tmp1, u8tmp2;
540 u64 u64tmp;
541 u32 u32tmp;
542
543 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc);
544
545 if (!test_bit(POWER_ON, &dev->flags))
546 return 0;
547
548 if (dev->f_adc == 0)
549 return 0;
550
551 f_sr = dev->f_adc;
552
553 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x00\x00", 2);
554 if (ret)
555 goto err;
556
557 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x00\x00\x00\x00", 4);
558 if (ret)
559 goto err;
560
561 /* get IF from tuner */
562 if (fe->ops.tuner_ops.get_if_frequency)
563 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if);
564 else
565 ret = -EINVAL;
566
567 if (ret)
568 goto err;
569
570 /* program IF */
571 u64tmp = f_if % pdata->clk;
572 u64tmp *= 0x400000;
573 u64tmp = div_u64(u64tmp, pdata->clk);
574 u64tmp = -u64tmp;
575 u32tmp = u64tmp & 0x3fffff;
576
577 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp);
578
579 buf[0] = (u32tmp >> 16) & 0xff;
580 buf[1] = (u32tmp >> 8) & 0xff;
581 buf[2] = (u32tmp >> 0) & 0xff;
582
583 ret = rtl2832_sdr_wr_regs(dev, 0x119, buf, 3);
584 if (ret)
585 goto err;
586
587 /* BB / IF mode */
588 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */
589 if (f_if) {
590 u8tmp1 = 0x1a; /* disable Zero-IF */
591 u8tmp2 = 0x8d; /* enable ADC I */
592 } else {
593 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */
594 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */
595 }
596
597 ret = rtl2832_sdr_wr_reg(dev, 0x1b1, u8tmp1);
598 if (ret)
599 goto err;
600
601 ret = rtl2832_sdr_wr_reg(dev, 0x008, u8tmp2);
602 if (ret)
603 goto err;
604
605 ret = rtl2832_sdr_wr_reg(dev, 0x006, 0x80);
606 if (ret)
607 goto err;
608
609 /* program sampling rate (resampling down) */
610 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U);
611 u32tmp <<= 2;
612 buf[0] = (u32tmp >> 24) & 0xff;
613 buf[1] = (u32tmp >> 16) & 0xff;
614 buf[2] = (u32tmp >> 8) & 0xff;
615 buf[3] = (u32tmp >> 0) & 0xff;
616 ret = rtl2832_sdr_wr_regs(dev, 0x19f, buf, 4);
617 if (ret)
618 goto err;
619
620 /* low-pass filter */
621 ret = rtl2832_sdr_wr_regs(dev, 0x11c,
622 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5",
623 20);
624 if (ret)
625 goto err;
626
627 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2);
628 if (ret)
629 goto err;
630
631 /* mode */
632 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x05", 1);
633 if (ret)
634 goto err;
635
636 ret = rtl2832_sdr_wr_regs(dev, 0x01a, "\x1b\x16\x0d\x06\x01\xff", 6);
637 if (ret)
638 goto err;
639
640 /* FSM */
641 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\xf0\x0f", 3);
642 if (ret)
643 goto err;
644
645 /* PID filter */
646 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\x60", 1);
647 if (ret)
648 goto err;
649
650 /* used RF tuner based settings */
651 switch (pdata->tuner) {
652 case RTL2832_SDR_TUNER_E4000:
653 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
654 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
655 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1);
656 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x30", 1);
657 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xd0", 1);
658 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
659 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x18", 1);
660 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
661 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
662 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
663 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
664 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
665 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
666 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
667 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
668 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
669 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
670 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
671 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
672 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
673 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xd4", 1);
674 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1);
675 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1);
676 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1);
677 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x14", 1);
678 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xec", 1);
679 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1);
680 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1);
681 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1);
682 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x83", 1);
683 ret = rtl2832_sdr_wr_regs(dev, 0x010, "\x49", 1);
684 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x87", 1);
685 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x85", 1);
686 ret = rtl2832_sdr_wr_regs(dev, 0x013, "\x02", 1);
687 break;
688 case RTL2832_SDR_TUNER_FC0012:
689 case RTL2832_SDR_TUNER_FC0013:
690 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
691 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
692 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1);
693 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x2c", 1);
694 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1);
695 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
696 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x16", 1);
697 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
698 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
699 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
700 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
701 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
702 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
703 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
704 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
705 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
706 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
707 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
708 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
709 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
710 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xe9\xbf", 2);
711 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1);
712 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1);
713 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1);
714 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x11", 1);
715 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xef", 1);
716 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1);
717 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1);
718 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1);
719 break;
720 case RTL2832_SDR_TUNER_R820T:
721 case RTL2832_SDR_TUNER_R828D:
722 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1);
723 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1);
724 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x01", 1);
725 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x80", 1);
726 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x24", 1);
727 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1);
728 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1);
729 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x14", 1);
730 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1);
731 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1);
732 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1);
733 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1);
734 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1);
735 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1);
736 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1);
737 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1);
738 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1);
739 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1);
740 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1);
741 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
742 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1);
743 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xf4", 1);
744 break;
745 default:
746 dev_notice(&pdev->dev, "Unsupported tuner\n");
747 }
748
749 /* software reset */
750 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x04, 0x04);
751 if (ret)
752 goto err;
753
754 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x00, 0x04);
755 if (ret)
756 goto err;
757 err:
758 return ret;
759 };
760
761 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev)
762 {
763 struct platform_device *pdev = dev->pdev;
764 int ret;
765
766 dev_dbg(&pdev->dev, "\n");
767
768 /* PID filter */
769 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\xe0", 1);
770 if (ret)
771 goto err;
772
773 /* mode */
774 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x20", 1);
775 if (ret)
776 goto err;
777
778 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2);
779 if (ret)
780 goto err;
781
782 /* FSM */
783 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\x0f\xff", 3);
784 if (ret)
785 goto err;
786
787 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x40\x00", 2);
788 if (ret)
789 goto err;
790
791 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x06\x3f\xce\xcc", 4);
792 if (ret)
793 goto err;
794 err:
795 return;
796 };
797
798 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev)
799 {
800 struct platform_device *pdev = dev->pdev;
801 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
802 struct dvb_frontend *fe = pdata->dvb_frontend;
803 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
804 struct v4l2_ctrl *bandwidth_auto;
805 struct v4l2_ctrl *bandwidth;
806
807 /*
808 * tuner RF (Hz)
809 */
810 if (dev->f_tuner == 0)
811 return 0;
812
813 /*
814 * bandwidth (Hz)
815 */
816 bandwidth_auto = v4l2_ctrl_find(&dev->hdl,
817 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO);
818 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH);
819 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) {
820 c->bandwidth_hz = dev->f_adc;
821 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc);
822 } else {
823 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth);
824 }
825
826 c->frequency = dev->f_tuner;
827 c->delivery_system = SYS_DVBT;
828
829 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n",
830 c->frequency, c->bandwidth_hz);
831
832 if (!test_bit(POWER_ON, &dev->flags))
833 return 0;
834
835 if (fe->ops.tuner_ops.set_params)
836 fe->ops.tuner_ops.set_params(fe);
837
838 return 0;
839 };
840
841 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev)
842 {
843 struct platform_device *pdev = dev->pdev;
844 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
845 struct dvb_frontend *fe = pdata->dvb_frontend;
846
847 dev_dbg(&pdev->dev, "\n");
848
849 if (fe->ops.tuner_ops.init)
850 fe->ops.tuner_ops.init(fe);
851
852 return 0;
853 };
854
855 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev)
856 {
857 struct platform_device *pdev = dev->pdev;
858 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
859 struct dvb_frontend *fe = pdata->dvb_frontend;
860
861 dev_dbg(&pdev->dev, "\n");
862
863 if (fe->ops.tuner_ops.sleep)
864 fe->ops.tuner_ops.sleep(fe);
865
866 return;
867 };
868
869 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count)
870 {
871 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
872 struct platform_device *pdev = dev->pdev;
873 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
874 struct dvb_usb_device *d = pdata->dvb_usb_device;
875 int ret;
876
877 dev_dbg(&pdev->dev, "\n");
878
879 if (!dev->udev)
880 return -ENODEV;
881
882 if (mutex_lock_interruptible(&dev->v4l2_lock))
883 return -ERESTARTSYS;
884
885 if (d->props->power_ctrl)
886 d->props->power_ctrl(d, 1);
887
888 /* enable ADC */
889 if (d->props->frontend_ctrl)
890 d->props->frontend_ctrl(pdata->dvb_frontend, 1);
891
892 set_bit(POWER_ON, &dev->flags);
893
894 ret = rtl2832_sdr_set_tuner(dev);
895 if (ret)
896 goto err;
897
898 ret = rtl2832_sdr_set_tuner_freq(dev);
899 if (ret)
900 goto err;
901
902 ret = rtl2832_sdr_set_adc(dev);
903 if (ret)
904 goto err;
905
906 ret = rtl2832_sdr_alloc_stream_bufs(dev);
907 if (ret)
908 goto err;
909
910 ret = rtl2832_sdr_alloc_urbs(dev);
911 if (ret)
912 goto err;
913
914 dev->sequence = 0;
915
916 ret = rtl2832_sdr_submit_urbs(dev);
917 if (ret)
918 goto err;
919
920 err:
921 mutex_unlock(&dev->v4l2_lock);
922
923 return ret;
924 }
925
926 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq)
927 {
928 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
929 struct platform_device *pdev = dev->pdev;
930 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
931 struct dvb_usb_device *d = pdata->dvb_usb_device;
932
933 dev_dbg(&pdev->dev, "\n");
934
935 mutex_lock(&dev->v4l2_lock);
936
937 rtl2832_sdr_kill_urbs(dev);
938 rtl2832_sdr_free_urbs(dev);
939 rtl2832_sdr_free_stream_bufs(dev);
940 rtl2832_sdr_cleanup_queued_bufs(dev);
941 rtl2832_sdr_unset_adc(dev);
942 rtl2832_sdr_unset_tuner(dev);
943
944 clear_bit(POWER_ON, &dev->flags);
945
946 /* disable ADC */
947 if (d->props->frontend_ctrl)
948 d->props->frontend_ctrl(pdata->dvb_frontend, 0);
949
950 if (d->props->power_ctrl)
951 d->props->power_ctrl(d, 0);
952
953 mutex_unlock(&dev->v4l2_lock);
954 }
955
956 static struct vb2_ops rtl2832_sdr_vb2_ops = {
957 .queue_setup = rtl2832_sdr_queue_setup,
958 .buf_prepare = rtl2832_sdr_buf_prepare,
959 .buf_queue = rtl2832_sdr_buf_queue,
960 .start_streaming = rtl2832_sdr_start_streaming,
961 .stop_streaming = rtl2832_sdr_stop_streaming,
962 .wait_prepare = vb2_ops_wait_prepare,
963 .wait_finish = vb2_ops_wait_finish,
964 };
965
966 static int rtl2832_sdr_g_tuner(struct file *file, void *priv,
967 struct v4l2_tuner *v)
968 {
969 struct rtl2832_sdr_dev *dev = video_drvdata(file);
970 struct platform_device *pdev = dev->pdev;
971
972 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type);
973
974 if (v->index == 0) {
975 strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));
976 v->type = V4L2_TUNER_ADC;
977 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
978 v->rangelow = 300000;
979 v->rangehigh = 3200000;
980 } else if (v->index == 1) {
981 strlcpy(v->name, "RF: <unknown>", sizeof(v->name));
982 v->type = V4L2_TUNER_RF;
983 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
984 v->rangelow = 50000000;
985 v->rangehigh = 2000000000;
986 } else {
987 return -EINVAL;
988 }
989
990 return 0;
991 }
992
993 static int rtl2832_sdr_s_tuner(struct file *file, void *priv,
994 const struct v4l2_tuner *v)
995 {
996 struct rtl2832_sdr_dev *dev = video_drvdata(file);
997 struct platform_device *pdev = dev->pdev;
998
999 dev_dbg(&pdev->dev, "\n");
1000
1001 if (v->index > 1)
1002 return -EINVAL;
1003 return 0;
1004 }
1005
1006 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv,
1007 struct v4l2_frequency_band *band)
1008 {
1009 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1010 struct platform_device *pdev = dev->pdev;
1011
1012 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n",
1013 band->tuner, band->type, band->index);
1014
1015 if (band->tuner == 0) {
1016 if (band->index >= ARRAY_SIZE(bands_adc))
1017 return -EINVAL;
1018
1019 *band = bands_adc[band->index];
1020 } else if (band->tuner == 1) {
1021 if (band->index >= ARRAY_SIZE(bands_fm))
1022 return -EINVAL;
1023
1024 *band = bands_fm[band->index];
1025 } else {
1026 return -EINVAL;
1027 }
1028
1029 return 0;
1030 }
1031
1032 static int rtl2832_sdr_g_frequency(struct file *file, void *priv,
1033 struct v4l2_frequency *f)
1034 {
1035 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1036 struct platform_device *pdev = dev->pdev;
1037 int ret = 0;
1038
1039 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type);
1040
1041 if (f->tuner == 0) {
1042 f->frequency = dev->f_adc;
1043 f->type = V4L2_TUNER_ADC;
1044 } else if (f->tuner == 1) {
1045 f->frequency = dev->f_tuner;
1046 f->type = V4L2_TUNER_RF;
1047 } else {
1048 return -EINVAL;
1049 }
1050
1051 return ret;
1052 }
1053
1054 static int rtl2832_sdr_s_frequency(struct file *file, void *priv,
1055 const struct v4l2_frequency *f)
1056 {
1057 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1058 struct platform_device *pdev = dev->pdev;
1059 int ret, band;
1060
1061 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n",
1062 f->tuner, f->type, f->frequency);
1063
1064 /* ADC band midpoints */
1065 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2)
1066 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2)
1067
1068 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) {
1069 if (f->frequency < BAND_ADC_0)
1070 band = 0;
1071 else if (f->frequency < BAND_ADC_1)
1072 band = 1;
1073 else
1074 band = 2;
1075
1076 dev->f_adc = clamp_t(unsigned int, f->frequency,
1077 bands_adc[band].rangelow,
1078 bands_adc[band].rangehigh);
1079
1080 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc);
1081 ret = rtl2832_sdr_set_adc(dev);
1082 } else if (f->tuner == 1) {
1083 dev->f_tuner = clamp_t(unsigned int, f->frequency,
1084 bands_fm[0].rangelow,
1085 bands_fm[0].rangehigh);
1086 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency);
1087
1088 ret = rtl2832_sdr_set_tuner_freq(dev);
1089 } else {
1090 ret = -EINVAL;
1091 }
1092
1093 return ret;
1094 }
1095
1096 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,
1097 struct v4l2_fmtdesc *f)
1098 {
1099 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1100 struct platform_device *pdev = dev->pdev;
1101
1102 dev_dbg(&pdev->dev, "\n");
1103
1104 if (f->index >= dev->num_formats)
1105 return -EINVAL;
1106
1107 strlcpy(f->description, formats[f->index].name, sizeof(f->description));
1108 f->pixelformat = formats[f->index].pixelformat;
1109
1110 return 0;
1111 }
1112
1113 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv,
1114 struct v4l2_format *f)
1115 {
1116 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1117 struct platform_device *pdev = dev->pdev;
1118
1119 dev_dbg(&pdev->dev, "\n");
1120
1121 f->fmt.sdr.pixelformat = dev->pixelformat;
1122 f->fmt.sdr.buffersize = dev->buffersize;
1123
1124 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1125
1126 return 0;
1127 }
1128
1129 static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,
1130 struct v4l2_format *f)
1131 {
1132 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1133 struct platform_device *pdev = dev->pdev;
1134 struct vb2_queue *q = &dev->vb_queue;
1135 int i;
1136
1137 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",
1138 (char *)&f->fmt.sdr.pixelformat);
1139
1140 if (vb2_is_busy(q))
1141 return -EBUSY;
1142
1143 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1144 for (i = 0; i < dev->num_formats; i++) {
1145 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1146 dev->pixelformat = formats[i].pixelformat;
1147 dev->buffersize = formats[i].buffersize;
1148 f->fmt.sdr.buffersize = formats[i].buffersize;
1149 return 0;
1150 }
1151 }
1152
1153 dev->pixelformat = formats[0].pixelformat;
1154 dev->buffersize = formats[0].buffersize;
1155 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1156 f->fmt.sdr.buffersize = formats[0].buffersize;
1157
1158 return 0;
1159 }
1160
1161 static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,
1162 struct v4l2_format *f)
1163 {
1164 struct rtl2832_sdr_dev *dev = video_drvdata(file);
1165 struct platform_device *pdev = dev->pdev;
1166 int i;
1167
1168 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",
1169 (char *)&f->fmt.sdr.pixelformat);
1170
1171 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
1172 for (i = 0; i < dev->num_formats; i++) {
1173 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
1174 f->fmt.sdr.buffersize = formats[i].buffersize;
1175 return 0;
1176 }
1177 }
1178
1179 f->fmt.sdr.pixelformat = formats[0].pixelformat;
1180 f->fmt.sdr.buffersize = formats[0].buffersize;
1181
1182 return 0;
1183 }
1184
1185 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = {
1186 .vidioc_querycap = rtl2832_sdr_querycap,
1187
1188 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap,
1189 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap,
1190 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap,
1191 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap,
1192
1193 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1194 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1195 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1196 .vidioc_querybuf = vb2_ioctl_querybuf,
1197 .vidioc_qbuf = vb2_ioctl_qbuf,
1198 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1199
1200 .vidioc_streamon = vb2_ioctl_streamon,
1201 .vidioc_streamoff = vb2_ioctl_streamoff,
1202
1203 .vidioc_g_tuner = rtl2832_sdr_g_tuner,
1204 .vidioc_s_tuner = rtl2832_sdr_s_tuner,
1205
1206 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands,
1207 .vidioc_g_frequency = rtl2832_sdr_g_frequency,
1208 .vidioc_s_frequency = rtl2832_sdr_s_frequency,
1209
1210 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1211 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1212 .vidioc_log_status = v4l2_ctrl_log_status,
1213 };
1214
1215 static const struct v4l2_file_operations rtl2832_sdr_fops = {
1216 .owner = THIS_MODULE,
1217 .open = v4l2_fh_open,
1218 .release = vb2_fop_release,
1219 .read = vb2_fop_read,
1220 .poll = vb2_fop_poll,
1221 .mmap = vb2_fop_mmap,
1222 .unlocked_ioctl = video_ioctl2,
1223 };
1224
1225 static struct video_device rtl2832_sdr_template = {
1226 .name = "Realtek RTL2832 SDR",
1227 .release = video_device_release_empty,
1228 .fops = &rtl2832_sdr_fops,
1229 .ioctl_ops = &rtl2832_sdr_ioctl_ops,
1230 };
1231
1232 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)
1233 {
1234 struct rtl2832_sdr_dev *dev =
1235 container_of(ctrl->handler, struct rtl2832_sdr_dev,
1236 hdl);
1237 struct platform_device *pdev = dev->pdev;
1238 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
1239 struct dvb_frontend *fe = pdata->dvb_frontend;
1240 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1241 int ret;
1242
1243 dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n",
1244 ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum,
1245 ctrl->step);
1246
1247 switch (ctrl->id) {
1248 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
1249 case V4L2_CID_RF_TUNER_BANDWIDTH:
1250 /* TODO: these controls should be moved to tuner drivers */
1251 if (dev->bandwidth_auto->val) {
1252 /* Round towards the closest legal value */
1253 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2);
1254 u32 offset;
1255
1256 val = clamp_t(s32, val, dev->bandwidth->minimum,
1257 dev->bandwidth->maximum);
1258 offset = val - dev->bandwidth->minimum;
1259 offset = dev->bandwidth->step *
1260 div_u64(offset, dev->bandwidth->step);
1261 dev->bandwidth->val = dev->bandwidth->minimum + offset;
1262 }
1263 c->bandwidth_hz = dev->bandwidth->val;
1264
1265 if (!test_bit(POWER_ON, &dev->flags))
1266 return 0;
1267
1268 if (fe->ops.tuner_ops.set_params)
1269 ret = fe->ops.tuner_ops.set_params(fe);
1270 else
1271 ret = 0;
1272 break;
1273 default:
1274 ret = -EINVAL;
1275 }
1276
1277 return ret;
1278 }
1279
1280 static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = {
1281 .s_ctrl = rtl2832_sdr_s_ctrl,
1282 };
1283
1284 static void rtl2832_sdr_video_release(struct v4l2_device *v)
1285 {
1286 struct rtl2832_sdr_dev *dev =
1287 container_of(v, struct rtl2832_sdr_dev, v4l2_dev);
1288 struct platform_device *pdev = dev->pdev;
1289
1290 dev_dbg(&pdev->dev, "\n");
1291
1292 v4l2_ctrl_handler_free(&dev->hdl);
1293 v4l2_device_unregister(&dev->v4l2_dev);
1294 kfree(dev);
1295 }
1296
1297 /* Platform driver interface */
1298 static int rtl2832_sdr_probe(struct platform_device *pdev)
1299 {
1300 struct rtl2832_sdr_dev *dev;
1301 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;
1302 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops;
1303 struct v4l2_subdev *subdev;
1304 int ret;
1305
1306 dev_dbg(&pdev->dev, "\n");
1307
1308 if (!pdata) {
1309 dev_err(&pdev->dev, "Cannot proceed without platform data\n");
1310 ret = -EINVAL;
1311 goto err;
1312 }
1313 if (!pdev->dev.parent->driver) {
1314 dev_dbg(&pdev->dev, "No parent device\n");
1315 ret = -EINVAL;
1316 goto err;
1317 }
1318 /* try to refcount host drv since we are the consumer */
1319 if (!try_module_get(pdev->dev.parent->driver->owner)) {
1320 dev_err(&pdev->dev, "Refcount fail");
1321 ret = -EINVAL;
1322 goto err;
1323 }
1324 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1325 if (dev == NULL) {
1326 ret = -ENOMEM;
1327 goto err_module_put;
1328 }
1329
1330 /* setup the state */
1331 subdev = pdata->v4l2_subdev;
1332 dev->pdev = pdev;
1333 dev->udev = pdata->dvb_usb_device->udev;
1334 dev->f_adc = bands_adc[0].rangelow;
1335 dev->f_tuner = bands_fm[0].rangelow;
1336 dev->pixelformat = formats[0].pixelformat;
1337 dev->buffersize = formats[0].buffersize;
1338 dev->num_formats = NUM_FORMATS;
1339 if (!rtl2832_sdr_emulated_fmt)
1340 dev->num_formats -= 1;
1341
1342 mutex_init(&dev->v4l2_lock);
1343 mutex_init(&dev->vb_queue_lock);
1344 spin_lock_init(&dev->queued_bufs_lock);
1345 INIT_LIST_HEAD(&dev->queued_bufs);
1346
1347 /* Init videobuf2 queue structure */
1348 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;
1349 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
1350 dev->vb_queue.drv_priv = dev;
1351 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf);
1352 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops;
1353 dev->vb_queue.mem_ops = &vb2_vmalloc_memops;
1354 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1355 ret = vb2_queue_init(&dev->vb_queue);
1356 if (ret) {
1357 dev_err(&pdev->dev, "Could not initialize vb2 queue\n");
1358 goto err_kfree;
1359 }
1360
1361 /* Register controls */
1362 switch (pdata->tuner) {
1363 case RTL2832_SDR_TUNER_E4000:
1364 v4l2_ctrl_handler_init(&dev->hdl, 9);
1365 if (subdev)
1366 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, NULL);
1367 break;
1368 case RTL2832_SDR_TUNER_R820T:
1369 case RTL2832_SDR_TUNER_R828D:
1370 v4l2_ctrl_handler_init(&dev->hdl, 2);
1371 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1372 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1373 0, 1, 1, 1);
1374 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1375 V4L2_CID_RF_TUNER_BANDWIDTH,
1376 0, 8000000, 100000, 0);
1377 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1378 break;
1379 case RTL2832_SDR_TUNER_FC0012:
1380 case RTL2832_SDR_TUNER_FC0013:
1381 v4l2_ctrl_handler_init(&dev->hdl, 2);
1382 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,
1383 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
1384 0, 1, 1, 1);
1385 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,
1386 V4L2_CID_RF_TUNER_BANDWIDTH,
1387 6000000, 8000000, 1000000,
1388 6000000);
1389 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
1390 break;
1391 default:
1392 v4l2_ctrl_handler_init(&dev->hdl, 0);
1393 dev_err(&pdev->dev, "Unsupported tuner\n");
1394 goto err_v4l2_ctrl_handler_free;
1395 }
1396 if (dev->hdl.error) {
1397 ret = dev->hdl.error;
1398 dev_err(&pdev->dev, "Could not initialize controls\n");
1399 goto err_v4l2_ctrl_handler_free;
1400 }
1401
1402 /* Init video_device structure */
1403 dev->vdev = rtl2832_sdr_template;
1404 dev->vdev.queue = &dev->vb_queue;
1405 dev->vdev.queue->lock = &dev->vb_queue_lock;
1406 video_set_drvdata(&dev->vdev, dev);
1407
1408 /* Register the v4l2_device structure */
1409 dev->v4l2_dev.release = rtl2832_sdr_video_release;
1410 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1411 if (ret) {
1412 dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret);
1413 goto err_v4l2_ctrl_handler_free;
1414 }
1415
1416 dev->v4l2_dev.ctrl_handler = &dev->hdl;
1417 dev->vdev.v4l2_dev = &dev->v4l2_dev;
1418 dev->vdev.lock = &dev->v4l2_lock;
1419 dev->vdev.vfl_dir = VFL_DIR_RX;
1420
1421 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1);
1422 if (ret) {
1423 dev_err(&pdev->dev, "Failed to register as video device %d\n",
1424 ret);
1425 goto err_v4l2_device_unregister;
1426 }
1427 dev_info(&pdev->dev, "Registered as %s\n",
1428 video_device_node_name(&dev->vdev));
1429 dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n");
1430 dev_notice(&pdev->dev,
1431 "SDR API is still slightly experimental and functionality changes may follow\n");
1432 platform_set_drvdata(pdev, dev);
1433 return 0;
1434 err_v4l2_device_unregister:
1435 v4l2_device_unregister(&dev->v4l2_dev);
1436 err_v4l2_ctrl_handler_free:
1437 v4l2_ctrl_handler_free(&dev->hdl);
1438 err_kfree:
1439 kfree(dev);
1440 err_module_put:
1441 module_put(pdev->dev.parent->driver->owner);
1442 err:
1443 return ret;
1444 }
1445
1446 static int rtl2832_sdr_remove(struct platform_device *pdev)
1447 {
1448 struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev);
1449
1450 dev_dbg(&pdev->dev, "\n");
1451
1452 mutex_lock(&dev->vb_queue_lock);
1453 mutex_lock(&dev->v4l2_lock);
1454 /* No need to keep the urbs around after disconnection */
1455 dev->udev = NULL;
1456 v4l2_device_disconnect(&dev->v4l2_dev);
1457 video_unregister_device(&dev->vdev);
1458 mutex_unlock(&dev->v4l2_lock);
1459 mutex_unlock(&dev->vb_queue_lock);
1460 v4l2_device_put(&dev->v4l2_dev);
1461 module_put(pdev->dev.parent->driver->owner);
1462
1463 return 0;
1464 }
1465
1466 static struct platform_driver rtl2832_sdr_driver = {
1467 .driver = {
1468 .name = "rtl2832_sdr",
1469 .owner = THIS_MODULE,
1470 },
1471 .probe = rtl2832_sdr_probe,
1472 .remove = rtl2832_sdr_remove,
1473 };
1474 module_platform_driver(rtl2832_sdr_driver);
1475
1476 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1477 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver");
1478 MODULE_LICENSE("GPL");
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