1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Realtek RTL2832U SDR driver |
4 | * |
5 | * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> |
6 | * |
7 | * GNU Radio plugin "gr-kernel" for device usage will be on: |
8 | * https://git.linuxtv.org/anttip/gr-kernel.git |
9 | */ |
10 | |
11 | #include "rtl2832_sdr.h" |
12 | #include "dvb_usb.h" |
13 | |
14 | #include <media/v4l2-device.h> |
15 | #include <media/v4l2-ioctl.h> |
16 | #include <media/v4l2-ctrls.h> |
17 | #include <media/v4l2-event.h> |
18 | #include <media/videobuf2-v4l2.h> |
19 | #include <media/videobuf2-vmalloc.h> |
20 | |
21 | #include <linux/platform_device.h> |
22 | #include <linux/jiffies.h> |
23 | #include <linux/math64.h> |
24 | #include <linux/regmap.h> |
25 | |
26 | static bool rtl2832_sdr_emulated_fmt; |
27 | module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644); |
28 | MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)" ); |
29 | |
30 | /* Original macro does not contain enough null pointer checks for our need */ |
31 | #define V4L2_SUBDEV_HAS_OP(sd, o, f) \ |
32 | ((sd) && (sd)->ops && (sd)->ops->o && (sd)->ops->o->f) |
33 | |
34 | #define MAX_BULK_BUFS (10) |
35 | #define BULK_BUFFER_SIZE (128 * 512) |
36 | |
37 | static const struct v4l2_frequency_band bands_adc[] = { |
38 | { |
39 | .tuner = 0, |
40 | .type = V4L2_TUNER_ADC, |
41 | .index = 0, |
42 | .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, |
43 | .rangelow = 300000, |
44 | .rangehigh = 300000, |
45 | }, |
46 | { |
47 | .tuner = 0, |
48 | .type = V4L2_TUNER_ADC, |
49 | .index = 1, |
50 | .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, |
51 | .rangelow = 900001, |
52 | .rangehigh = 2800000, |
53 | }, |
54 | { |
55 | .tuner = 0, |
56 | .type = V4L2_TUNER_ADC, |
57 | .index = 2, |
58 | .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, |
59 | .rangelow = 3200000, |
60 | .rangehigh = 3200000, |
61 | }, |
62 | }; |
63 | |
64 | static const struct v4l2_frequency_band bands_fm[] = { |
65 | { |
66 | .tuner = 1, |
67 | .type = V4L2_TUNER_RF, |
68 | .index = 0, |
69 | .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, |
70 | .rangelow = 50000000, |
71 | .rangehigh = 2000000000, |
72 | }, |
73 | }; |
74 | |
75 | /* stream formats */ |
76 | struct rtl2832_sdr_format { |
77 | char *name; |
78 | u32 pixelformat; |
79 | u32 buffersize; |
80 | }; |
81 | |
82 | static struct rtl2832_sdr_format formats[] = { |
83 | { |
84 | .pixelformat = V4L2_SDR_FMT_CU8, |
85 | .buffersize = BULK_BUFFER_SIZE, |
86 | }, { |
87 | .pixelformat = V4L2_SDR_FMT_CU16LE, |
88 | .buffersize = BULK_BUFFER_SIZE * 2, |
89 | }, |
90 | }; |
91 | |
92 | static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); |
93 | |
94 | /* intermediate buffers with raw data from the USB device */ |
95 | struct rtl2832_sdr_frame_buf { |
96 | /* common v4l buffer stuff -- must be first */ |
97 | struct vb2_v4l2_buffer vb; |
98 | struct list_head list; |
99 | }; |
100 | |
101 | struct rtl2832_sdr_dev { |
102 | #define POWER_ON 0 /* BIT(0) */ |
103 | #define URB_BUF 1 /* BIT(1) */ |
104 | unsigned long flags; |
105 | |
106 | struct platform_device *pdev; |
107 | struct regmap *regmap; |
108 | |
109 | struct video_device vdev; |
110 | struct v4l2_device v4l2_dev; |
111 | struct v4l2_subdev *v4l2_subdev; |
112 | |
113 | /* videobuf2 queue and queued buffers list */ |
114 | struct vb2_queue vb_queue; |
115 | struct list_head queued_bufs; |
116 | spinlock_t queued_bufs_lock; /* Protects queued_bufs */ |
117 | unsigned sequence; /* buffer sequence counter */ |
118 | |
119 | /* Note if taking both locks v4l2_lock must always be locked first! */ |
120 | struct mutex v4l2_lock; /* Protects everything else */ |
121 | struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ |
122 | |
123 | /* Pointer to our usb_device, will be NULL after unplug */ |
124 | struct usb_device *udev; /* Both mutexes most be hold when setting! */ |
125 | |
126 | unsigned int vb_full; /* vb is full and packets dropped */ |
127 | |
128 | struct urb *urb_list[MAX_BULK_BUFS]; |
129 | int buf_num; |
130 | unsigned long buf_size; |
131 | u8 *buf_list[MAX_BULK_BUFS]; |
132 | dma_addr_t dma_addr[MAX_BULK_BUFS]; |
133 | int urbs_initialized; |
134 | int urbs_submitted; |
135 | |
136 | unsigned int f_adc, f_tuner; |
137 | u32 pixelformat; |
138 | u32 buffersize; |
139 | unsigned int num_formats; |
140 | |
141 | /* Controls */ |
142 | struct v4l2_ctrl_handler hdl; |
143 | struct v4l2_ctrl *bandwidth_auto; |
144 | struct v4l2_ctrl *bandwidth; |
145 | |
146 | /* for sample rate calc */ |
147 | unsigned int sample; |
148 | unsigned int sample_measured; |
149 | unsigned long jiffies_next; |
150 | }; |
151 | |
152 | /* Private functions */ |
153 | static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf( |
154 | struct rtl2832_sdr_dev *dev) |
155 | { |
156 | unsigned long flags; |
157 | struct rtl2832_sdr_frame_buf *buf = NULL; |
158 | |
159 | spin_lock_irqsave(&dev->queued_bufs_lock, flags); |
160 | if (list_empty(head: &dev->queued_bufs)) |
161 | goto leave; |
162 | |
163 | buf = list_entry(dev->queued_bufs.next, |
164 | struct rtl2832_sdr_frame_buf, list); |
165 | list_del(entry: &buf->list); |
166 | leave: |
167 | spin_unlock_irqrestore(lock: &dev->queued_bufs_lock, flags); |
168 | return buf; |
169 | } |
170 | |
171 | static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev, |
172 | void *dst, const u8 *src, unsigned int src_len) |
173 | { |
174 | struct platform_device *pdev = dev->pdev; |
175 | unsigned int dst_len; |
176 | |
177 | if (dev->pixelformat == V4L2_SDR_FMT_CU8) { |
178 | /* native stream, no need to convert */ |
179 | memcpy(dst, src, src_len); |
180 | dst_len = src_len; |
181 | } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) { |
182 | /* convert u8 to u16 */ |
183 | unsigned int i; |
184 | u16 *u16dst = dst; |
185 | |
186 | for (i = 0; i < src_len; i++) |
187 | *u16dst++ = (src[i] << 8) | (src[i] >> 0); |
188 | dst_len = 2 * src_len; |
189 | } else { |
190 | dst_len = 0; |
191 | } |
192 | |
193 | /* calculate sample rate and output it in 10 seconds intervals */ |
194 | if (unlikely(time_is_before_jiffies(dev->jiffies_next))) { |
195 | #define MSECS 10000UL |
196 | unsigned int msecs = jiffies_to_msecs(j: jiffies - |
197 | dev->jiffies_next + msecs_to_jiffies(MSECS)); |
198 | unsigned int samples = dev->sample - dev->sample_measured; |
199 | |
200 | dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS); |
201 | dev->sample_measured = dev->sample; |
202 | dev_dbg(&pdev->dev, |
203 | "slen=%u samples=%u msecs=%u sample rate=%lu\n" , |
204 | src_len, samples, msecs, samples * 1000UL / msecs); |
205 | } |
206 | |
207 | /* total number of I+Q pairs */ |
208 | dev->sample += src_len / 2; |
209 | |
210 | return dst_len; |
211 | } |
212 | |
213 | /* |
214 | * This gets called for the bulk stream pipe. This is done in interrupt |
215 | * time, so it has to be fast, not crash, and not stall. Neat. |
216 | */ |
217 | static void rtl2832_sdr_urb_complete(struct urb *urb) |
218 | { |
219 | struct rtl2832_sdr_dev *dev = urb->context; |
220 | struct platform_device *pdev = dev->pdev; |
221 | struct rtl2832_sdr_frame_buf *fbuf; |
222 | |
223 | dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n" , |
224 | urb->status, urb->actual_length, |
225 | urb->transfer_buffer_length, urb->error_count); |
226 | |
227 | switch (urb->status) { |
228 | case 0: /* success */ |
229 | case -ETIMEDOUT: /* NAK */ |
230 | break; |
231 | case -ECONNRESET: /* kill */ |
232 | case -ENOENT: |
233 | case -ESHUTDOWN: |
234 | return; |
235 | default: /* error */ |
236 | dev_err_ratelimited(&pdev->dev, "urb failed=%d\n" , urb->status); |
237 | break; |
238 | } |
239 | |
240 | if (likely(urb->actual_length > 0)) { |
241 | void *ptr; |
242 | unsigned int len; |
243 | /* get free framebuffer */ |
244 | fbuf = rtl2832_sdr_get_next_fill_buf(dev); |
245 | if (unlikely(fbuf == NULL)) { |
246 | dev->vb_full++; |
247 | dev_notice_ratelimited(&pdev->dev, |
248 | "video buffer is full, %d packets dropped\n" , |
249 | dev->vb_full); |
250 | goto skip; |
251 | } |
252 | |
253 | /* fill framebuffer */ |
254 | ptr = vb2_plane_vaddr(vb: &fbuf->vb.vb2_buf, plane_no: 0); |
255 | len = rtl2832_sdr_convert_stream(dev, dst: ptr, src: urb->transfer_buffer, |
256 | src_len: urb->actual_length); |
257 | vb2_set_plane_payload(vb: &fbuf->vb.vb2_buf, plane_no: 0, size: len); |
258 | fbuf->vb.vb2_buf.timestamp = ktime_get_ns(); |
259 | fbuf->vb.sequence = dev->sequence++; |
260 | vb2_buffer_done(vb: &fbuf->vb.vb2_buf, state: VB2_BUF_STATE_DONE); |
261 | } |
262 | skip: |
263 | usb_submit_urb(urb, GFP_ATOMIC); |
264 | } |
265 | |
266 | static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev) |
267 | { |
268 | struct platform_device *pdev = dev->pdev; |
269 | int i; |
270 | |
271 | for (i = dev->urbs_submitted - 1; i >= 0; i--) { |
272 | dev_dbg(&pdev->dev, "kill urb=%d\n" , i); |
273 | /* stop the URB */ |
274 | usb_kill_urb(urb: dev->urb_list[i]); |
275 | } |
276 | dev->urbs_submitted = 0; |
277 | |
278 | return 0; |
279 | } |
280 | |
281 | static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev) |
282 | { |
283 | struct platform_device *pdev = dev->pdev; |
284 | int i, ret; |
285 | |
286 | for (i = 0; i < dev->urbs_initialized; i++) { |
287 | dev_dbg(&pdev->dev, "submit urb=%d\n" , i); |
288 | ret = usb_submit_urb(urb: dev->urb_list[i], GFP_KERNEL); |
289 | if (ret) { |
290 | dev_err(&pdev->dev, |
291 | "Could not submit urb no. %d - get them all back\n" , |
292 | i); |
293 | rtl2832_sdr_kill_urbs(dev); |
294 | return ret; |
295 | } |
296 | dev->urbs_submitted++; |
297 | } |
298 | |
299 | return 0; |
300 | } |
301 | |
302 | static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev) |
303 | { |
304 | struct platform_device *pdev = dev->pdev; |
305 | |
306 | if (test_bit(URB_BUF, &dev->flags)) { |
307 | while (dev->buf_num) { |
308 | dev->buf_num--; |
309 | dev_dbg(&pdev->dev, "free buf=%d\n" , dev->buf_num); |
310 | usb_free_coherent(dev: dev->udev, size: dev->buf_size, |
311 | addr: dev->buf_list[dev->buf_num], |
312 | dma: dev->dma_addr[dev->buf_num]); |
313 | } |
314 | } |
315 | clear_bit(URB_BUF, addr: &dev->flags); |
316 | |
317 | return 0; |
318 | } |
319 | |
320 | static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev) |
321 | { |
322 | struct platform_device *pdev = dev->pdev; |
323 | |
324 | dev->buf_num = 0; |
325 | dev->buf_size = BULK_BUFFER_SIZE; |
326 | |
327 | dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n" , |
328 | MAX_BULK_BUFS * BULK_BUFFER_SIZE); |
329 | |
330 | for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) { |
331 | dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev: dev->udev, |
332 | BULK_BUFFER_SIZE, GFP_KERNEL, |
333 | dma: &dev->dma_addr[dev->buf_num]); |
334 | if (!dev->buf_list[dev->buf_num]) { |
335 | dev_dbg(&pdev->dev, "alloc buf=%d failed\n" , |
336 | dev->buf_num); |
337 | rtl2832_sdr_free_stream_bufs(dev); |
338 | return -ENOMEM; |
339 | } |
340 | |
341 | dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n" , |
342 | dev->buf_num, dev->buf_list[dev->buf_num], |
343 | (long long)dev->dma_addr[dev->buf_num]); |
344 | set_bit(URB_BUF, addr: &dev->flags); |
345 | } |
346 | |
347 | return 0; |
348 | } |
349 | |
350 | static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev) |
351 | { |
352 | struct platform_device *pdev = dev->pdev; |
353 | int i; |
354 | |
355 | rtl2832_sdr_kill_urbs(dev); |
356 | |
357 | for (i = dev->urbs_initialized - 1; i >= 0; i--) { |
358 | if (dev->urb_list[i]) { |
359 | dev_dbg(&pdev->dev, "free urb=%d\n" , i); |
360 | /* free the URBs */ |
361 | usb_free_urb(urb: dev->urb_list[i]); |
362 | } |
363 | } |
364 | dev->urbs_initialized = 0; |
365 | |
366 | return 0; |
367 | } |
368 | |
369 | static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev) |
370 | { |
371 | struct platform_device *pdev = dev->pdev; |
372 | int i, j; |
373 | |
374 | /* allocate the URBs */ |
375 | for (i = 0; i < MAX_BULK_BUFS; i++) { |
376 | dev_dbg(&pdev->dev, "alloc urb=%d\n" , i); |
377 | dev->urb_list[i] = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
378 | if (!dev->urb_list[i]) { |
379 | for (j = 0; j < i; j++) { |
380 | usb_free_urb(urb: dev->urb_list[j]); |
381 | dev->urb_list[j] = NULL; |
382 | } |
383 | dev->urbs_initialized = 0; |
384 | return -ENOMEM; |
385 | } |
386 | usb_fill_bulk_urb(urb: dev->urb_list[i], |
387 | dev: dev->udev, |
388 | usb_rcvbulkpipe(dev->udev, 0x81), |
389 | transfer_buffer: dev->buf_list[i], |
390 | BULK_BUFFER_SIZE, |
391 | complete_fn: rtl2832_sdr_urb_complete, context: dev); |
392 | |
393 | dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
394 | dev->urb_list[i]->transfer_dma = dev->dma_addr[i]; |
395 | dev->urbs_initialized++; |
396 | } |
397 | |
398 | return 0; |
399 | } |
400 | |
401 | /* Must be called with vb_queue_lock hold */ |
402 | static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev) |
403 | { |
404 | struct platform_device *pdev = dev->pdev; |
405 | unsigned long flags; |
406 | |
407 | dev_dbg(&pdev->dev, "\n" ); |
408 | |
409 | spin_lock_irqsave(&dev->queued_bufs_lock, flags); |
410 | while (!list_empty(head: &dev->queued_bufs)) { |
411 | struct rtl2832_sdr_frame_buf *buf; |
412 | |
413 | buf = list_entry(dev->queued_bufs.next, |
414 | struct rtl2832_sdr_frame_buf, list); |
415 | list_del(entry: &buf->list); |
416 | vb2_buffer_done(vb: &buf->vb.vb2_buf, state: VB2_BUF_STATE_ERROR); |
417 | } |
418 | spin_unlock_irqrestore(lock: &dev->queued_bufs_lock, flags); |
419 | } |
420 | |
421 | static int rtl2832_sdr_querycap(struct file *file, void *fh, |
422 | struct v4l2_capability *cap) |
423 | { |
424 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
425 | struct platform_device *pdev = dev->pdev; |
426 | |
427 | dev_dbg(&pdev->dev, "\n" ); |
428 | |
429 | strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); |
430 | strscpy(cap->card, dev->vdev.name, sizeof(cap->card)); |
431 | usb_make_path(dev: dev->udev, buf: cap->bus_info, size: sizeof(cap->bus_info)); |
432 | return 0; |
433 | } |
434 | |
435 | /* Videobuf2 operations */ |
436 | static int rtl2832_sdr_queue_setup(struct vb2_queue *vq, |
437 | unsigned int *nbuffers, |
438 | unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) |
439 | { |
440 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vq); |
441 | struct platform_device *pdev = dev->pdev; |
442 | unsigned int q_num_bufs = vb2_get_num_buffers(q: vq); |
443 | |
444 | dev_dbg(&pdev->dev, "nbuffers=%d\n" , *nbuffers); |
445 | |
446 | /* Need at least 8 buffers */ |
447 | if (q_num_bufs + *nbuffers < 8) |
448 | *nbuffers = 8 - q_num_bufs; |
449 | *nplanes = 1; |
450 | sizes[0] = PAGE_ALIGN(dev->buffersize); |
451 | dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n" , *nbuffers, sizes[0]); |
452 | return 0; |
453 | } |
454 | |
455 | static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) |
456 | { |
457 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue); |
458 | |
459 | /* Don't allow queueing new buffers after device disconnection */ |
460 | if (!dev->udev) |
461 | return -ENODEV; |
462 | |
463 | return 0; |
464 | } |
465 | |
466 | static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) |
467 | { |
468 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
469 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue); |
470 | struct rtl2832_sdr_frame_buf *buf = |
471 | container_of(vbuf, struct rtl2832_sdr_frame_buf, vb); |
472 | unsigned long flags; |
473 | |
474 | /* Check the device has not disconnected between prep and queuing */ |
475 | if (!dev->udev) { |
476 | vb2_buffer_done(vb: &buf->vb.vb2_buf, state: VB2_BUF_STATE_ERROR); |
477 | return; |
478 | } |
479 | |
480 | spin_lock_irqsave(&dev->queued_bufs_lock, flags); |
481 | list_add_tail(new: &buf->list, head: &dev->queued_bufs); |
482 | spin_unlock_irqrestore(lock: &dev->queued_bufs_lock, flags); |
483 | } |
484 | |
485 | static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev) |
486 | { |
487 | struct platform_device *pdev = dev->pdev; |
488 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
489 | struct dvb_frontend *fe = pdata->dvb_frontend; |
490 | int ret; |
491 | unsigned int f_sr, f_if; |
492 | u8 buf[4], u8tmp1, u8tmp2; |
493 | u64 u64tmp; |
494 | u32 u32tmp; |
495 | |
496 | dev_dbg(&pdev->dev, "f_adc=%u\n" , dev->f_adc); |
497 | |
498 | if (!test_bit(POWER_ON, &dev->flags)) |
499 | return 0; |
500 | |
501 | if (dev->f_adc == 0) |
502 | return 0; |
503 | |
504 | f_sr = dev->f_adc; |
505 | |
506 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x13e, val: "\x00\x00" , val_count: 2); |
507 | if (ret) |
508 | goto err; |
509 | |
510 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x115, val: "\x00\x00\x00\x00" , val_count: 4); |
511 | if (ret) |
512 | goto err; |
513 | |
514 | /* get IF from tuner */ |
515 | if (fe->ops.tuner_ops.get_if_frequency) |
516 | ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); |
517 | else |
518 | ret = -EINVAL; |
519 | |
520 | if (ret) |
521 | goto err; |
522 | |
523 | /* program IF */ |
524 | u64tmp = f_if % pdata->clk; |
525 | u64tmp *= 0x400000; |
526 | u64tmp = div_u64(dividend: u64tmp, divisor: pdata->clk); |
527 | u64tmp = -u64tmp; |
528 | u32tmp = u64tmp & 0x3fffff; |
529 | |
530 | dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n" , f_if, u32tmp); |
531 | |
532 | buf[0] = (u32tmp >> 16) & 0xff; |
533 | buf[1] = (u32tmp >> 8) & 0xff; |
534 | buf[2] = (u32tmp >> 0) & 0xff; |
535 | |
536 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x119, val: buf, val_count: 3); |
537 | if (ret) |
538 | goto err; |
539 | |
540 | /* BB / IF mode */ |
541 | /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ |
542 | if (f_if) { |
543 | u8tmp1 = 0x1a; /* disable Zero-IF */ |
544 | u8tmp2 = 0x8d; /* enable ADC I */ |
545 | } else { |
546 | u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ |
547 | u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ |
548 | } |
549 | |
550 | ret = regmap_write(map: dev->regmap, reg: 0x1b1, val: u8tmp1); |
551 | if (ret) |
552 | goto err; |
553 | |
554 | ret = regmap_write(map: dev->regmap, reg: 0x008, val: u8tmp2); |
555 | if (ret) |
556 | goto err; |
557 | |
558 | ret = regmap_write(map: dev->regmap, reg: 0x006, val: 0x80); |
559 | if (ret) |
560 | goto err; |
561 | |
562 | /* program sampling rate (resampling down) */ |
563 | u32tmp = div_u64(dividend: pdata->clk * 0x400000ULL, divisor: f_sr * 4U); |
564 | u32tmp <<= 2; |
565 | buf[0] = (u32tmp >> 24) & 0xff; |
566 | buf[1] = (u32tmp >> 16) & 0xff; |
567 | buf[2] = (u32tmp >> 8) & 0xff; |
568 | buf[3] = (u32tmp >> 0) & 0xff; |
569 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x19f, val: buf, val_count: 4); |
570 | if (ret) |
571 | goto err; |
572 | |
573 | /* low-pass filter */ |
574 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x11c, |
575 | val: "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5" , |
576 | val_count: 20); |
577 | if (ret) |
578 | goto err; |
579 | |
580 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x017, val: "\x11\x10" , val_count: 2); |
581 | if (ret) |
582 | goto err; |
583 | |
584 | /* mode */ |
585 | ret = regmap_write(map: dev->regmap, reg: 0x019, val: 0x05); |
586 | if (ret) |
587 | goto err; |
588 | |
589 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x01a, |
590 | val: "\x1b\x16\x0d\x06\x01\xff" , val_count: 6); |
591 | if (ret) |
592 | goto err; |
593 | |
594 | /* FSM */ |
595 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x192, val: "\x00\xf0\x0f" , val_count: 3); |
596 | if (ret) |
597 | goto err; |
598 | |
599 | /* PID filter */ |
600 | ret = regmap_write(map: dev->regmap, reg: 0x061, val: 0x60); |
601 | if (ret) |
602 | goto err; |
603 | |
604 | /* used RF tuner based settings */ |
605 | switch (pdata->tuner) { |
606 | case RTL2832_SDR_TUNER_E4000: |
607 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x5a); |
608 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
609 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x5a); |
610 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x30); |
611 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xd0); |
612 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
613 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x18); |
614 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
615 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
616 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
617 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
618 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
619 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
620 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
621 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
622 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
623 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x80); |
624 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
625 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
626 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
627 | ret = regmap_write(map: dev->regmap, reg: 0x011, val: 0xd4); |
628 | ret = regmap_write(map: dev->regmap, reg: 0x1e5, val: 0xf0); |
629 | ret = regmap_write(map: dev->regmap, reg: 0x1d9, val: 0x00); |
630 | ret = regmap_write(map: dev->regmap, reg: 0x1db, val: 0x00); |
631 | ret = regmap_write(map: dev->regmap, reg: 0x1dd, val: 0x14); |
632 | ret = regmap_write(map: dev->regmap, reg: 0x1de, val: 0xec); |
633 | ret = regmap_write(map: dev->regmap, reg: 0x1d8, val: 0x0c); |
634 | ret = regmap_write(map: dev->regmap, reg: 0x1e6, val: 0x02); |
635 | ret = regmap_write(map: dev->regmap, reg: 0x1d7, val: 0x09); |
636 | ret = regmap_write(map: dev->regmap, reg: 0x00d, val: 0x83); |
637 | ret = regmap_write(map: dev->regmap, reg: 0x010, val: 0x49); |
638 | ret = regmap_write(map: dev->regmap, reg: 0x00d, val: 0x87); |
639 | ret = regmap_write(map: dev->regmap, reg: 0x00d, val: 0x85); |
640 | ret = regmap_write(map: dev->regmap, reg: 0x013, val: 0x02); |
641 | break; |
642 | case RTL2832_SDR_TUNER_FC0012: |
643 | case RTL2832_SDR_TUNER_FC0013: |
644 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x5a); |
645 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
646 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x5a); |
647 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x2c); |
648 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xcc); |
649 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
650 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x16); |
651 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
652 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
653 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
654 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
655 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
656 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
657 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
658 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
659 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
660 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x80); |
661 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
662 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
663 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
664 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x011, val: "\xe9\xbf" , val_count: 2); |
665 | ret = regmap_write(map: dev->regmap, reg: 0x1e5, val: 0xf0); |
666 | ret = regmap_write(map: dev->regmap, reg: 0x1d9, val: 0x00); |
667 | ret = regmap_write(map: dev->regmap, reg: 0x1db, val: 0x00); |
668 | ret = regmap_write(map: dev->regmap, reg: 0x1dd, val: 0x11); |
669 | ret = regmap_write(map: dev->regmap, reg: 0x1de, val: 0xef); |
670 | ret = regmap_write(map: dev->regmap, reg: 0x1d8, val: 0x0c); |
671 | ret = regmap_write(map: dev->regmap, reg: 0x1e6, val: 0x02); |
672 | ret = regmap_write(map: dev->regmap, reg: 0x1d7, val: 0x09); |
673 | break; |
674 | case RTL2832_SDR_TUNER_R820T: |
675 | case RTL2832_SDR_TUNER_R828D: |
676 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x5a); |
677 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
678 | ret = regmap_write(map: dev->regmap, reg: 0x115, val: 0x01); |
679 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x80); |
680 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x24); |
681 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xcc); |
682 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
683 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x14); |
684 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
685 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
686 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
687 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
688 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
689 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
690 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
691 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
692 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
693 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x80); |
694 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
695 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
696 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
697 | ret = regmap_write(map: dev->regmap, reg: 0x011, val: 0xf4); |
698 | break; |
699 | case RTL2832_SDR_TUNER_FC2580: |
700 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x39); |
701 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
702 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x5a); |
703 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x2c); |
704 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xcc); |
705 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
706 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x16); |
707 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
708 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
709 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
710 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
711 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
712 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
713 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
714 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
715 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
716 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x9c); |
717 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
718 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
719 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
720 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x011, val: "\xe9\xf4" , val_count: 2); |
721 | break; |
722 | default: |
723 | dev_notice(&pdev->dev, "Unsupported tuner\n" ); |
724 | } |
725 | |
726 | /* software reset */ |
727 | ret = regmap_update_bits(map: dev->regmap, reg: 0x101, mask: 0x04, val: 0x04); |
728 | if (ret) |
729 | goto err; |
730 | |
731 | ret = regmap_update_bits(map: dev->regmap, reg: 0x101, mask: 0x04, val: 0x00); |
732 | if (ret) |
733 | goto err; |
734 | err: |
735 | return ret; |
736 | }; |
737 | |
738 | static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev) |
739 | { |
740 | struct platform_device *pdev = dev->pdev; |
741 | int ret; |
742 | |
743 | dev_dbg(&pdev->dev, "\n" ); |
744 | |
745 | /* PID filter */ |
746 | ret = regmap_write(map: dev->regmap, reg: 0x061, val: 0xe0); |
747 | if (ret) |
748 | goto err; |
749 | |
750 | /* mode */ |
751 | ret = regmap_write(map: dev->regmap, reg: 0x019, val: 0x20); |
752 | if (ret) |
753 | goto err; |
754 | |
755 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x017, val: "\x11\x10" , val_count: 2); |
756 | if (ret) |
757 | goto err; |
758 | |
759 | /* FSM */ |
760 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x192, val: "\x00\x0f\xff" , val_count: 3); |
761 | if (ret) |
762 | goto err; |
763 | |
764 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x13e, val: "\x40\x00" , val_count: 2); |
765 | if (ret) |
766 | goto err; |
767 | |
768 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x115, val: "\x06\x3f\xce\xcc" , val_count: 4); |
769 | if (ret) |
770 | goto err; |
771 | err: |
772 | return; |
773 | }; |
774 | |
775 | static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev) |
776 | { |
777 | struct platform_device *pdev = dev->pdev; |
778 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
779 | struct dvb_frontend *fe = pdata->dvb_frontend; |
780 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
781 | struct v4l2_ctrl *bandwidth_auto; |
782 | struct v4l2_ctrl *bandwidth; |
783 | |
784 | /* |
785 | * tuner RF (Hz) |
786 | */ |
787 | if (dev->f_tuner == 0) |
788 | return 0; |
789 | |
790 | /* |
791 | * bandwidth (Hz) |
792 | */ |
793 | bandwidth_auto = v4l2_ctrl_find(hdl: &dev->hdl, |
794 | V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); |
795 | bandwidth = v4l2_ctrl_find(hdl: &dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); |
796 | if (v4l2_ctrl_g_ctrl(ctrl: bandwidth_auto)) { |
797 | c->bandwidth_hz = dev->f_adc; |
798 | v4l2_ctrl_s_ctrl(ctrl: bandwidth, val: dev->f_adc); |
799 | } else { |
800 | c->bandwidth_hz = v4l2_ctrl_g_ctrl(ctrl: bandwidth); |
801 | } |
802 | |
803 | c->frequency = dev->f_tuner; |
804 | c->delivery_system = SYS_DVBT; |
805 | |
806 | dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n" , |
807 | c->frequency, c->bandwidth_hz); |
808 | |
809 | if (!test_bit(POWER_ON, &dev->flags)) |
810 | return 0; |
811 | |
812 | if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { |
813 | if (fe->ops.tuner_ops.set_params) |
814 | fe->ops.tuner_ops.set_params(fe); |
815 | } |
816 | |
817 | return 0; |
818 | }; |
819 | |
820 | static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev) |
821 | { |
822 | struct platform_device *pdev = dev->pdev; |
823 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
824 | struct dvb_frontend *fe = pdata->dvb_frontend; |
825 | |
826 | dev_dbg(&pdev->dev, "\n" ); |
827 | |
828 | if (fe->ops.tuner_ops.init) |
829 | fe->ops.tuner_ops.init(fe); |
830 | |
831 | return 0; |
832 | }; |
833 | |
834 | static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev) |
835 | { |
836 | struct platform_device *pdev = dev->pdev; |
837 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
838 | struct dvb_frontend *fe = pdata->dvb_frontend; |
839 | |
840 | dev_dbg(&pdev->dev, "\n" ); |
841 | |
842 | if (fe->ops.tuner_ops.sleep) |
843 | fe->ops.tuner_ops.sleep(fe); |
844 | |
845 | return; |
846 | }; |
847 | |
848 | static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) |
849 | { |
850 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vq); |
851 | struct platform_device *pdev = dev->pdev; |
852 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
853 | struct dvb_usb_device *d = pdata->dvb_usb_device; |
854 | int ret; |
855 | |
856 | dev_dbg(&pdev->dev, "\n" ); |
857 | |
858 | if (!dev->udev) |
859 | return -ENODEV; |
860 | |
861 | if (mutex_lock_interruptible(&dev->v4l2_lock)) |
862 | return -ERESTARTSYS; |
863 | |
864 | if (d->props->power_ctrl) |
865 | d->props->power_ctrl(d, 1); |
866 | |
867 | /* enable ADC */ |
868 | if (d->props->frontend_ctrl) |
869 | d->props->frontend_ctrl(pdata->dvb_frontend, 1); |
870 | |
871 | set_bit(POWER_ON, addr: &dev->flags); |
872 | |
873 | /* wake-up tuner */ |
874 | if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) |
875 | ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); |
876 | else |
877 | ret = rtl2832_sdr_set_tuner(dev); |
878 | if (ret) |
879 | goto err; |
880 | |
881 | ret = rtl2832_sdr_set_tuner_freq(dev); |
882 | if (ret) |
883 | goto err; |
884 | |
885 | ret = rtl2832_sdr_set_adc(dev); |
886 | if (ret) |
887 | goto err; |
888 | |
889 | ret = rtl2832_sdr_alloc_stream_bufs(dev); |
890 | if (ret) |
891 | goto err; |
892 | |
893 | ret = rtl2832_sdr_alloc_urbs(dev); |
894 | if (ret) |
895 | goto err; |
896 | |
897 | dev->sequence = 0; |
898 | |
899 | ret = rtl2832_sdr_submit_urbs(dev); |
900 | if (ret) |
901 | goto err; |
902 | |
903 | err: |
904 | mutex_unlock(lock: &dev->v4l2_lock); |
905 | |
906 | return ret; |
907 | } |
908 | |
909 | static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) |
910 | { |
911 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vq); |
912 | struct platform_device *pdev = dev->pdev; |
913 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
914 | struct dvb_usb_device *d = pdata->dvb_usb_device; |
915 | |
916 | dev_dbg(&pdev->dev, "\n" ); |
917 | |
918 | mutex_lock(&dev->v4l2_lock); |
919 | |
920 | rtl2832_sdr_kill_urbs(dev); |
921 | rtl2832_sdr_free_urbs(dev); |
922 | rtl2832_sdr_free_stream_bufs(dev); |
923 | rtl2832_sdr_cleanup_queued_bufs(dev); |
924 | rtl2832_sdr_unset_adc(dev); |
925 | |
926 | /* sleep tuner */ |
927 | if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) |
928 | v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); |
929 | else |
930 | rtl2832_sdr_unset_tuner(dev); |
931 | |
932 | clear_bit(POWER_ON, addr: &dev->flags); |
933 | |
934 | /* disable ADC */ |
935 | if (d->props->frontend_ctrl) |
936 | d->props->frontend_ctrl(pdata->dvb_frontend, 0); |
937 | |
938 | if (d->props->power_ctrl) |
939 | d->props->power_ctrl(d, 0); |
940 | |
941 | mutex_unlock(lock: &dev->v4l2_lock); |
942 | } |
943 | |
944 | static const struct vb2_ops rtl2832_sdr_vb2_ops = { |
945 | .queue_setup = rtl2832_sdr_queue_setup, |
946 | .buf_prepare = rtl2832_sdr_buf_prepare, |
947 | .buf_queue = rtl2832_sdr_buf_queue, |
948 | .start_streaming = rtl2832_sdr_start_streaming, |
949 | .stop_streaming = rtl2832_sdr_stop_streaming, |
950 | .wait_prepare = vb2_ops_wait_prepare, |
951 | .wait_finish = vb2_ops_wait_finish, |
952 | }; |
953 | |
954 | static int rtl2832_sdr_g_tuner(struct file *file, void *priv, |
955 | struct v4l2_tuner *v) |
956 | { |
957 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
958 | struct platform_device *pdev = dev->pdev; |
959 | int ret; |
960 | |
961 | dev_dbg(&pdev->dev, "index=%d type=%d\n" , v->index, v->type); |
962 | |
963 | if (v->index == 0) { |
964 | strscpy(v->name, "ADC: Realtek RTL2832" , sizeof(v->name)); |
965 | v->type = V4L2_TUNER_ADC; |
966 | v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; |
967 | v->rangelow = 300000; |
968 | v->rangehigh = 3200000; |
969 | ret = 0; |
970 | } else if (v->index == 1 && |
971 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) { |
972 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); |
973 | } else if (v->index == 1) { |
974 | strscpy(v->name, "RF: <unknown>" , sizeof(v->name)); |
975 | v->type = V4L2_TUNER_RF; |
976 | v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; |
977 | v->rangelow = 50000000; |
978 | v->rangehigh = 2000000000; |
979 | ret = 0; |
980 | } else { |
981 | ret = -EINVAL; |
982 | } |
983 | return ret; |
984 | } |
985 | |
986 | static int rtl2832_sdr_s_tuner(struct file *file, void *priv, |
987 | const struct v4l2_tuner *v) |
988 | { |
989 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
990 | struct platform_device *pdev = dev->pdev; |
991 | int ret; |
992 | |
993 | dev_dbg(&pdev->dev, "\n" ); |
994 | |
995 | if (v->index == 0) { |
996 | ret = 0; |
997 | } else if (v->index == 1 && |
998 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) { |
999 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); |
1000 | } else if (v->index == 1) { |
1001 | ret = 0; |
1002 | } else { |
1003 | ret = -EINVAL; |
1004 | } |
1005 | return ret; |
1006 | } |
1007 | |
1008 | static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv, |
1009 | struct v4l2_frequency_band *band) |
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, "tuner=%d type=%d index=%d\n" , |
1016 | band->tuner, band->type, band->index); |
1017 | |
1018 | if (band->tuner == 0) { |
1019 | if (band->index >= ARRAY_SIZE(bands_adc)) |
1020 | return -EINVAL; |
1021 | |
1022 | *band = bands_adc[band->index]; |
1023 | ret = 0; |
1024 | } else if (band->tuner == 1 && |
1025 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) { |
1026 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band); |
1027 | } else if (band->tuner == 1) { |
1028 | if (band->index >= ARRAY_SIZE(bands_fm)) |
1029 | return -EINVAL; |
1030 | |
1031 | *band = bands_fm[band->index]; |
1032 | ret = 0; |
1033 | } else { |
1034 | ret = -EINVAL; |
1035 | } |
1036 | return ret; |
1037 | } |
1038 | |
1039 | static int rtl2832_sdr_g_frequency(struct file *file, void *priv, |
1040 | struct v4l2_frequency *f) |
1041 | { |
1042 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1043 | struct platform_device *pdev = dev->pdev; |
1044 | int ret; |
1045 | |
1046 | dev_dbg(&pdev->dev, "tuner=%d type=%d\n" , f->tuner, f->type); |
1047 | |
1048 | if (f->tuner == 0) { |
1049 | f->frequency = dev->f_adc; |
1050 | f->type = V4L2_TUNER_ADC; |
1051 | ret = 0; |
1052 | } else if (f->tuner == 1 && |
1053 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) { |
1054 | f->type = V4L2_TUNER_RF; |
1055 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); |
1056 | } else if (f->tuner == 1) { |
1057 | f->frequency = dev->f_tuner; |
1058 | f->type = V4L2_TUNER_RF; |
1059 | ret = 0; |
1060 | } else { |
1061 | ret = -EINVAL; |
1062 | } |
1063 | return ret; |
1064 | } |
1065 | |
1066 | static int rtl2832_sdr_s_frequency(struct file *file, void *priv, |
1067 | const struct v4l2_frequency *f) |
1068 | { |
1069 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1070 | struct platform_device *pdev = dev->pdev; |
1071 | int ret, band; |
1072 | |
1073 | dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n" , |
1074 | f->tuner, f->type, f->frequency); |
1075 | |
1076 | /* ADC band midpoints */ |
1077 | #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) |
1078 | #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) |
1079 | |
1080 | if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { |
1081 | if (f->frequency < BAND_ADC_0) |
1082 | band = 0; |
1083 | else if (f->frequency < BAND_ADC_1) |
1084 | band = 1; |
1085 | else |
1086 | band = 2; |
1087 | |
1088 | dev->f_adc = clamp_t(unsigned int, f->frequency, |
1089 | bands_adc[band].rangelow, |
1090 | bands_adc[band].rangehigh); |
1091 | |
1092 | dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n" , dev->f_adc); |
1093 | ret = rtl2832_sdr_set_adc(dev); |
1094 | } else if (f->tuner == 1 && |
1095 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { |
1096 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); |
1097 | } else if (f->tuner == 1) { |
1098 | dev->f_tuner = clamp_t(unsigned int, f->frequency, |
1099 | bands_fm[0].rangelow, |
1100 | bands_fm[0].rangehigh); |
1101 | dev_dbg(&pdev->dev, "RF frequency=%u Hz\n" , f->frequency); |
1102 | |
1103 | ret = rtl2832_sdr_set_tuner_freq(dev); |
1104 | } else { |
1105 | ret = -EINVAL; |
1106 | } |
1107 | return ret; |
1108 | } |
1109 | |
1110 | static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, |
1111 | struct v4l2_fmtdesc *f) |
1112 | { |
1113 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1114 | struct platform_device *pdev = dev->pdev; |
1115 | |
1116 | dev_dbg(&pdev->dev, "\n" ); |
1117 | |
1118 | if (f->index >= dev->num_formats) |
1119 | return -EINVAL; |
1120 | |
1121 | f->pixelformat = formats[f->index].pixelformat; |
1122 | |
1123 | return 0; |
1124 | } |
1125 | |
1126 | static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, |
1127 | struct v4l2_format *f) |
1128 | { |
1129 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1130 | struct platform_device *pdev = dev->pdev; |
1131 | |
1132 | dev_dbg(&pdev->dev, "\n" ); |
1133 | |
1134 | f->fmt.sdr.pixelformat = dev->pixelformat; |
1135 | f->fmt.sdr.buffersize = dev->buffersize; |
1136 | |
1137 | return 0; |
1138 | } |
1139 | |
1140 | static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, |
1141 | struct v4l2_format *f) |
1142 | { |
1143 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1144 | struct platform_device *pdev = dev->pdev; |
1145 | struct vb2_queue *q = &dev->vb_queue; |
1146 | int i; |
1147 | |
1148 | dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n" , |
1149 | (char *)&f->fmt.sdr.pixelformat); |
1150 | |
1151 | if (vb2_is_busy(q)) |
1152 | return -EBUSY; |
1153 | |
1154 | for (i = 0; i < dev->num_formats; i++) { |
1155 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
1156 | dev->pixelformat = formats[i].pixelformat; |
1157 | dev->buffersize = formats[i].buffersize; |
1158 | f->fmt.sdr.buffersize = formats[i].buffersize; |
1159 | return 0; |
1160 | } |
1161 | } |
1162 | |
1163 | dev->pixelformat = formats[0].pixelformat; |
1164 | dev->buffersize = formats[0].buffersize; |
1165 | f->fmt.sdr.pixelformat = formats[0].pixelformat; |
1166 | f->fmt.sdr.buffersize = formats[0].buffersize; |
1167 | |
1168 | return 0; |
1169 | } |
1170 | |
1171 | static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, |
1172 | struct v4l2_format *f) |
1173 | { |
1174 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1175 | struct platform_device *pdev = dev->pdev; |
1176 | int i; |
1177 | |
1178 | dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n" , |
1179 | (char *)&f->fmt.sdr.pixelformat); |
1180 | |
1181 | for (i = 0; i < dev->num_formats; i++) { |
1182 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
1183 | f->fmt.sdr.buffersize = formats[i].buffersize; |
1184 | return 0; |
1185 | } |
1186 | } |
1187 | |
1188 | f->fmt.sdr.pixelformat = formats[0].pixelformat; |
1189 | f->fmt.sdr.buffersize = formats[0].buffersize; |
1190 | |
1191 | return 0; |
1192 | } |
1193 | |
1194 | static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = { |
1195 | .vidioc_querycap = rtl2832_sdr_querycap, |
1196 | |
1197 | .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap, |
1198 | .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap, |
1199 | .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap, |
1200 | .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap, |
1201 | |
1202 | .vidioc_reqbufs = vb2_ioctl_reqbufs, |
1203 | .vidioc_create_bufs = vb2_ioctl_create_bufs, |
1204 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
1205 | .vidioc_querybuf = vb2_ioctl_querybuf, |
1206 | .vidioc_qbuf = vb2_ioctl_qbuf, |
1207 | .vidioc_dqbuf = vb2_ioctl_dqbuf, |
1208 | |
1209 | .vidioc_streamon = vb2_ioctl_streamon, |
1210 | .vidioc_streamoff = vb2_ioctl_streamoff, |
1211 | |
1212 | .vidioc_g_tuner = rtl2832_sdr_g_tuner, |
1213 | .vidioc_s_tuner = rtl2832_sdr_s_tuner, |
1214 | |
1215 | .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands, |
1216 | .vidioc_g_frequency = rtl2832_sdr_g_frequency, |
1217 | .vidioc_s_frequency = rtl2832_sdr_s_frequency, |
1218 | |
1219 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
1220 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
1221 | .vidioc_log_status = v4l2_ctrl_log_status, |
1222 | }; |
1223 | |
1224 | static const struct v4l2_file_operations rtl2832_sdr_fops = { |
1225 | .owner = THIS_MODULE, |
1226 | .open = v4l2_fh_open, |
1227 | .release = vb2_fop_release, |
1228 | .read = vb2_fop_read, |
1229 | .poll = vb2_fop_poll, |
1230 | .mmap = vb2_fop_mmap, |
1231 | .unlocked_ioctl = video_ioctl2, |
1232 | }; |
1233 | |
1234 | static struct video_device rtl2832_sdr_template = { |
1235 | .name = "Realtek RTL2832 SDR" , |
1236 | .release = video_device_release_empty, |
1237 | .fops = &rtl2832_sdr_fops, |
1238 | .ioctl_ops = &rtl2832_sdr_ioctl_ops, |
1239 | .device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | |
1240 | V4L2_CAP_READWRITE | V4L2_CAP_TUNER, |
1241 | }; |
1242 | |
1243 | static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl) |
1244 | { |
1245 | struct rtl2832_sdr_dev *dev = |
1246 | container_of(ctrl->handler, struct rtl2832_sdr_dev, |
1247 | hdl); |
1248 | struct platform_device *pdev = dev->pdev; |
1249 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
1250 | struct dvb_frontend *fe = pdata->dvb_frontend; |
1251 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
1252 | int ret; |
1253 | |
1254 | dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n" , |
1255 | ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum, |
1256 | ctrl->step); |
1257 | |
1258 | switch (ctrl->id) { |
1259 | case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: |
1260 | case V4L2_CID_RF_TUNER_BANDWIDTH: |
1261 | /* TODO: these controls should be moved to tuner drivers */ |
1262 | if (dev->bandwidth_auto->val) { |
1263 | /* Round towards the closest legal value */ |
1264 | s32 val = dev->f_adc + div_u64(dividend: dev->bandwidth->step, divisor: 2); |
1265 | u32 offset; |
1266 | |
1267 | val = clamp_t(s32, val, dev->bandwidth->minimum, |
1268 | dev->bandwidth->maximum); |
1269 | offset = val - dev->bandwidth->minimum; |
1270 | offset = dev->bandwidth->step * |
1271 | div_u64(dividend: offset, divisor: dev->bandwidth->step); |
1272 | dev->bandwidth->val = dev->bandwidth->minimum + offset; |
1273 | } |
1274 | c->bandwidth_hz = dev->bandwidth->val; |
1275 | |
1276 | if (!test_bit(POWER_ON, &dev->flags)) |
1277 | return 0; |
1278 | |
1279 | if (fe->ops.tuner_ops.set_params) |
1280 | ret = fe->ops.tuner_ops.set_params(fe); |
1281 | else |
1282 | ret = 0; |
1283 | break; |
1284 | default: |
1285 | ret = -EINVAL; |
1286 | } |
1287 | |
1288 | return ret; |
1289 | } |
1290 | |
1291 | static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { |
1292 | .s_ctrl = rtl2832_sdr_s_ctrl, |
1293 | }; |
1294 | |
1295 | static void rtl2832_sdr_video_release(struct v4l2_device *v) |
1296 | { |
1297 | struct rtl2832_sdr_dev *dev = |
1298 | container_of(v, struct rtl2832_sdr_dev, v4l2_dev); |
1299 | struct platform_device *pdev = dev->pdev; |
1300 | |
1301 | dev_dbg(&pdev->dev, "\n" ); |
1302 | |
1303 | v4l2_ctrl_handler_free(hdl: &dev->hdl); |
1304 | v4l2_device_unregister(v4l2_dev: &dev->v4l2_dev); |
1305 | kfree(objp: dev); |
1306 | } |
1307 | |
1308 | /* Platform driver interface */ |
1309 | static int rtl2832_sdr_probe(struct platform_device *pdev) |
1310 | { |
1311 | struct rtl2832_sdr_dev *dev; |
1312 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
1313 | const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops; |
1314 | struct v4l2_subdev *subdev; |
1315 | int ret; |
1316 | |
1317 | dev_dbg(&pdev->dev, "\n" ); |
1318 | |
1319 | if (!pdata) { |
1320 | dev_err(&pdev->dev, "Cannot proceed without platform data\n" ); |
1321 | ret = -EINVAL; |
1322 | goto err; |
1323 | } |
1324 | if (!pdev->dev.parent->driver) { |
1325 | dev_dbg(&pdev->dev, "No parent device\n" ); |
1326 | ret = -EINVAL; |
1327 | goto err; |
1328 | } |
1329 | /* try to refcount host drv since we are the consumer */ |
1330 | if (!try_module_get(module: pdev->dev.parent->driver->owner)) { |
1331 | dev_err(&pdev->dev, "Refcount fail" ); |
1332 | ret = -EINVAL; |
1333 | goto err; |
1334 | } |
1335 | dev = kzalloc(size: sizeof(*dev), GFP_KERNEL); |
1336 | if (dev == NULL) { |
1337 | ret = -ENOMEM; |
1338 | goto err_module_put; |
1339 | } |
1340 | |
1341 | /* setup the state */ |
1342 | subdev = pdata->v4l2_subdev; |
1343 | dev->v4l2_subdev = pdata->v4l2_subdev; |
1344 | dev->pdev = pdev; |
1345 | dev->regmap = pdata->regmap; |
1346 | dev->udev = pdata->dvb_usb_device->udev; |
1347 | dev->f_adc = bands_adc[0].rangelow; |
1348 | dev->f_tuner = bands_fm[0].rangelow; |
1349 | dev->pixelformat = formats[0].pixelformat; |
1350 | dev->buffersize = formats[0].buffersize; |
1351 | dev->num_formats = NUM_FORMATS; |
1352 | if (!rtl2832_sdr_emulated_fmt) |
1353 | dev->num_formats -= 1; |
1354 | |
1355 | mutex_init(&dev->v4l2_lock); |
1356 | mutex_init(&dev->vb_queue_lock); |
1357 | spin_lock_init(&dev->queued_bufs_lock); |
1358 | INIT_LIST_HEAD(list: &dev->queued_bufs); |
1359 | |
1360 | /* Init videobuf2 queue structure */ |
1361 | dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; |
1362 | dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; |
1363 | dev->vb_queue.drv_priv = dev; |
1364 | dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf); |
1365 | dev->vb_queue.ops = &rtl2832_sdr_vb2_ops; |
1366 | dev->vb_queue.mem_ops = &vb2_vmalloc_memops; |
1367 | dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
1368 | ret = vb2_queue_init(q: &dev->vb_queue); |
1369 | if (ret) { |
1370 | dev_err(&pdev->dev, "Could not initialize vb2 queue\n" ); |
1371 | goto err_kfree; |
1372 | } |
1373 | |
1374 | /* Register controls */ |
1375 | switch (pdata->tuner) { |
1376 | case RTL2832_SDR_TUNER_E4000: |
1377 | v4l2_ctrl_handler_init(&dev->hdl, 9); |
1378 | if (subdev) |
1379 | v4l2_ctrl_add_handler(hdl: &dev->hdl, add: subdev->ctrl_handler, |
1380 | NULL, from_other_dev: true); |
1381 | break; |
1382 | case RTL2832_SDR_TUNER_R820T: |
1383 | case RTL2832_SDR_TUNER_R828D: |
1384 | v4l2_ctrl_handler_init(&dev->hdl, 2); |
1385 | dev->bandwidth_auto = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1386 | V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, |
1387 | min: 0, max: 1, step: 1, def: 1); |
1388 | dev->bandwidth = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1389 | V4L2_CID_RF_TUNER_BANDWIDTH, |
1390 | min: 0, max: 8000000, step: 100000, def: 0); |
1391 | v4l2_ctrl_auto_cluster(ncontrols: 2, controls: &dev->bandwidth_auto, manual_val: 0, set_volatile: false); |
1392 | break; |
1393 | case RTL2832_SDR_TUNER_FC0012: |
1394 | case RTL2832_SDR_TUNER_FC0013: |
1395 | v4l2_ctrl_handler_init(&dev->hdl, 2); |
1396 | dev->bandwidth_auto = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1397 | V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, |
1398 | min: 0, max: 1, step: 1, def: 1); |
1399 | dev->bandwidth = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1400 | V4L2_CID_RF_TUNER_BANDWIDTH, |
1401 | min: 6000000, max: 8000000, step: 1000000, |
1402 | def: 6000000); |
1403 | v4l2_ctrl_auto_cluster(ncontrols: 2, controls: &dev->bandwidth_auto, manual_val: 0, set_volatile: false); |
1404 | break; |
1405 | case RTL2832_SDR_TUNER_FC2580: |
1406 | v4l2_ctrl_handler_init(&dev->hdl, 2); |
1407 | if (subdev) |
1408 | v4l2_ctrl_add_handler(hdl: &dev->hdl, add: subdev->ctrl_handler, |
1409 | NULL, from_other_dev: true); |
1410 | break; |
1411 | default: |
1412 | v4l2_ctrl_handler_init(&dev->hdl, 0); |
1413 | dev_err(&pdev->dev, "Unsupported tuner\n" ); |
1414 | ret = -ENODEV; |
1415 | goto err_v4l2_ctrl_handler_free; |
1416 | } |
1417 | if (dev->hdl.error) { |
1418 | ret = dev->hdl.error; |
1419 | dev_err(&pdev->dev, "Could not initialize controls\n" ); |
1420 | goto err_v4l2_ctrl_handler_free; |
1421 | } |
1422 | |
1423 | /* Init video_device structure */ |
1424 | dev->vdev = rtl2832_sdr_template; |
1425 | dev->vdev.queue = &dev->vb_queue; |
1426 | dev->vdev.queue->lock = &dev->vb_queue_lock; |
1427 | video_set_drvdata(vdev: &dev->vdev, data: dev); |
1428 | |
1429 | /* Register the v4l2_device structure */ |
1430 | dev->v4l2_dev.release = rtl2832_sdr_video_release; |
1431 | ret = v4l2_device_register(dev: &pdev->dev, v4l2_dev: &dev->v4l2_dev); |
1432 | if (ret) { |
1433 | dev_err(&pdev->dev, "Failed to register v4l2-device %d\n" , ret); |
1434 | goto err_v4l2_ctrl_handler_free; |
1435 | } |
1436 | |
1437 | dev->v4l2_dev.ctrl_handler = &dev->hdl; |
1438 | dev->vdev.v4l2_dev = &dev->v4l2_dev; |
1439 | dev->vdev.lock = &dev->v4l2_lock; |
1440 | dev->vdev.vfl_dir = VFL_DIR_RX; |
1441 | |
1442 | ret = video_register_device(vdev: &dev->vdev, type: VFL_TYPE_SDR, nr: -1); |
1443 | if (ret) { |
1444 | dev_err(&pdev->dev, "Failed to register as video device %d\n" , |
1445 | ret); |
1446 | goto err_v4l2_device_unregister; |
1447 | } |
1448 | dev_info(&pdev->dev, "Registered as %s\n" , |
1449 | video_device_node_name(&dev->vdev)); |
1450 | dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n" ); |
1451 | dev_notice(&pdev->dev, |
1452 | "SDR API is still slightly experimental and functionality changes may follow\n" ); |
1453 | platform_set_drvdata(pdev, data: dev); |
1454 | return 0; |
1455 | err_v4l2_device_unregister: |
1456 | v4l2_device_unregister(v4l2_dev: &dev->v4l2_dev); |
1457 | err_v4l2_ctrl_handler_free: |
1458 | v4l2_ctrl_handler_free(hdl: &dev->hdl); |
1459 | err_kfree: |
1460 | kfree(objp: dev); |
1461 | err_module_put: |
1462 | module_put(module: pdev->dev.parent->driver->owner); |
1463 | err: |
1464 | return ret; |
1465 | } |
1466 | |
1467 | static void rtl2832_sdr_remove(struct platform_device *pdev) |
1468 | { |
1469 | struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev); |
1470 | |
1471 | dev_dbg(&pdev->dev, "\n" ); |
1472 | |
1473 | mutex_lock(&dev->vb_queue_lock); |
1474 | mutex_lock(&dev->v4l2_lock); |
1475 | /* No need to keep the urbs around after disconnection */ |
1476 | dev->udev = NULL; |
1477 | v4l2_device_disconnect(v4l2_dev: &dev->v4l2_dev); |
1478 | video_unregister_device(vdev: &dev->vdev); |
1479 | mutex_unlock(lock: &dev->v4l2_lock); |
1480 | mutex_unlock(lock: &dev->vb_queue_lock); |
1481 | v4l2_device_put(v4l2_dev: &dev->v4l2_dev); |
1482 | module_put(module: pdev->dev.parent->driver->owner); |
1483 | } |
1484 | |
1485 | static struct platform_driver rtl2832_sdr_driver = { |
1486 | .driver = { |
1487 | .name = "rtl2832_sdr" , |
1488 | }, |
1489 | .probe = rtl2832_sdr_probe, |
1490 | .remove_new = rtl2832_sdr_remove, |
1491 | }; |
1492 | module_platform_driver(rtl2832_sdr_driver); |
1493 | |
1494 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>" ); |
1495 | MODULE_DESCRIPTION("Realtek RTL2832 SDR driver" ); |
1496 | MODULE_LICENSE("GPL" ); |
1497 | |