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(p: cap->driver, KBUILD_MODNAME, size: sizeof(cap->driver)); |
430 | strscpy(p: cap->card, q: dev->vdev.name, size: 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 | |
443 | dev_dbg(&pdev->dev, "nbuffers=%d\n" , *nbuffers); |
444 | |
445 | /* Need at least 8 buffers */ |
446 | if (vq->num_buffers + *nbuffers < 8) |
447 | *nbuffers = 8 - vq->num_buffers; |
448 | *nplanes = 1; |
449 | sizes[0] = PAGE_ALIGN(dev->buffersize); |
450 | dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n" , *nbuffers, sizes[0]); |
451 | return 0; |
452 | } |
453 | |
454 | static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) |
455 | { |
456 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue); |
457 | |
458 | /* Don't allow queueing new buffers after device disconnection */ |
459 | if (!dev->udev) |
460 | return -ENODEV; |
461 | |
462 | return 0; |
463 | } |
464 | |
465 | static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) |
466 | { |
467 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
468 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vb->vb2_queue); |
469 | struct rtl2832_sdr_frame_buf *buf = |
470 | container_of(vbuf, struct rtl2832_sdr_frame_buf, vb); |
471 | unsigned long flags; |
472 | |
473 | /* Check the device has not disconnected between prep and queuing */ |
474 | if (!dev->udev) { |
475 | vb2_buffer_done(vb: &buf->vb.vb2_buf, state: VB2_BUF_STATE_ERROR); |
476 | return; |
477 | } |
478 | |
479 | spin_lock_irqsave(&dev->queued_bufs_lock, flags); |
480 | list_add_tail(new: &buf->list, head: &dev->queued_bufs); |
481 | spin_unlock_irqrestore(lock: &dev->queued_bufs_lock, flags); |
482 | } |
483 | |
484 | static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev) |
485 | { |
486 | struct platform_device *pdev = dev->pdev; |
487 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
488 | struct dvb_frontend *fe = pdata->dvb_frontend; |
489 | int ret; |
490 | unsigned int f_sr, f_if; |
491 | u8 buf[4], u8tmp1, u8tmp2; |
492 | u64 u64tmp; |
493 | u32 u32tmp; |
494 | |
495 | dev_dbg(&pdev->dev, "f_adc=%u\n" , dev->f_adc); |
496 | |
497 | if (!test_bit(POWER_ON, &dev->flags)) |
498 | return 0; |
499 | |
500 | if (dev->f_adc == 0) |
501 | return 0; |
502 | |
503 | f_sr = dev->f_adc; |
504 | |
505 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x13e, val: "\x00\x00" , val_count: 2); |
506 | if (ret) |
507 | goto err; |
508 | |
509 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x115, val: "\x00\x00\x00\x00" , val_count: 4); |
510 | if (ret) |
511 | goto err; |
512 | |
513 | /* get IF from tuner */ |
514 | if (fe->ops.tuner_ops.get_if_frequency) |
515 | ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); |
516 | else |
517 | ret = -EINVAL; |
518 | |
519 | if (ret) |
520 | goto err; |
521 | |
522 | /* program IF */ |
523 | u64tmp = f_if % pdata->clk; |
524 | u64tmp *= 0x400000; |
525 | u64tmp = div_u64(dividend: u64tmp, divisor: pdata->clk); |
526 | u64tmp = -u64tmp; |
527 | u32tmp = u64tmp & 0x3fffff; |
528 | |
529 | dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n" , f_if, u32tmp); |
530 | |
531 | buf[0] = (u32tmp >> 16) & 0xff; |
532 | buf[1] = (u32tmp >> 8) & 0xff; |
533 | buf[2] = (u32tmp >> 0) & 0xff; |
534 | |
535 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x119, val: buf, val_count: 3); |
536 | if (ret) |
537 | goto err; |
538 | |
539 | /* BB / IF mode */ |
540 | /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ |
541 | if (f_if) { |
542 | u8tmp1 = 0x1a; /* disable Zero-IF */ |
543 | u8tmp2 = 0x8d; /* enable ADC I */ |
544 | } else { |
545 | u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ |
546 | u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ |
547 | } |
548 | |
549 | ret = regmap_write(map: dev->regmap, reg: 0x1b1, val: u8tmp1); |
550 | if (ret) |
551 | goto err; |
552 | |
553 | ret = regmap_write(map: dev->regmap, reg: 0x008, val: u8tmp2); |
554 | if (ret) |
555 | goto err; |
556 | |
557 | ret = regmap_write(map: dev->regmap, reg: 0x006, val: 0x80); |
558 | if (ret) |
559 | goto err; |
560 | |
561 | /* program sampling rate (resampling down) */ |
562 | u32tmp = div_u64(dividend: pdata->clk * 0x400000ULL, divisor: f_sr * 4U); |
563 | u32tmp <<= 2; |
564 | buf[0] = (u32tmp >> 24) & 0xff; |
565 | buf[1] = (u32tmp >> 16) & 0xff; |
566 | buf[2] = (u32tmp >> 8) & 0xff; |
567 | buf[3] = (u32tmp >> 0) & 0xff; |
568 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x19f, val: buf, val_count: 4); |
569 | if (ret) |
570 | goto err; |
571 | |
572 | /* low-pass filter */ |
573 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x11c, |
574 | val: "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5" , |
575 | val_count: 20); |
576 | if (ret) |
577 | goto err; |
578 | |
579 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x017, val: "\x11\x10" , val_count: 2); |
580 | if (ret) |
581 | goto err; |
582 | |
583 | /* mode */ |
584 | ret = regmap_write(map: dev->regmap, reg: 0x019, val: 0x05); |
585 | if (ret) |
586 | goto err; |
587 | |
588 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x01a, |
589 | val: "\x1b\x16\x0d\x06\x01\xff" , val_count: 6); |
590 | if (ret) |
591 | goto err; |
592 | |
593 | /* FSM */ |
594 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x192, val: "\x00\xf0\x0f" , val_count: 3); |
595 | if (ret) |
596 | goto err; |
597 | |
598 | /* PID filter */ |
599 | ret = regmap_write(map: dev->regmap, reg: 0x061, val: 0x60); |
600 | if (ret) |
601 | goto err; |
602 | |
603 | /* used RF tuner based settings */ |
604 | switch (pdata->tuner) { |
605 | case RTL2832_SDR_TUNER_E4000: |
606 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x5a); |
607 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
608 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x5a); |
609 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x30); |
610 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xd0); |
611 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
612 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x18); |
613 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
614 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
615 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
616 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
617 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
618 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
619 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
620 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
621 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
622 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x80); |
623 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
624 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
625 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
626 | ret = regmap_write(map: dev->regmap, reg: 0x011, val: 0xd4); |
627 | ret = regmap_write(map: dev->regmap, reg: 0x1e5, val: 0xf0); |
628 | ret = regmap_write(map: dev->regmap, reg: 0x1d9, val: 0x00); |
629 | ret = regmap_write(map: dev->regmap, reg: 0x1db, val: 0x00); |
630 | ret = regmap_write(map: dev->regmap, reg: 0x1dd, val: 0x14); |
631 | ret = regmap_write(map: dev->regmap, reg: 0x1de, val: 0xec); |
632 | ret = regmap_write(map: dev->regmap, reg: 0x1d8, val: 0x0c); |
633 | ret = regmap_write(map: dev->regmap, reg: 0x1e6, val: 0x02); |
634 | ret = regmap_write(map: dev->regmap, reg: 0x1d7, val: 0x09); |
635 | ret = regmap_write(map: dev->regmap, reg: 0x00d, val: 0x83); |
636 | ret = regmap_write(map: dev->regmap, reg: 0x010, val: 0x49); |
637 | ret = regmap_write(map: dev->regmap, reg: 0x00d, val: 0x87); |
638 | ret = regmap_write(map: dev->regmap, reg: 0x00d, val: 0x85); |
639 | ret = regmap_write(map: dev->regmap, reg: 0x013, val: 0x02); |
640 | break; |
641 | case RTL2832_SDR_TUNER_FC0012: |
642 | case RTL2832_SDR_TUNER_FC0013: |
643 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x5a); |
644 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
645 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x5a); |
646 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x2c); |
647 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xcc); |
648 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
649 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x16); |
650 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
651 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
652 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
653 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
654 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
655 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
656 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
657 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
658 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
659 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x80); |
660 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
661 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
662 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
663 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x011, val: "\xe9\xbf" , val_count: 2); |
664 | ret = regmap_write(map: dev->regmap, reg: 0x1e5, val: 0xf0); |
665 | ret = regmap_write(map: dev->regmap, reg: 0x1d9, val: 0x00); |
666 | ret = regmap_write(map: dev->regmap, reg: 0x1db, val: 0x00); |
667 | ret = regmap_write(map: dev->regmap, reg: 0x1dd, val: 0x11); |
668 | ret = regmap_write(map: dev->regmap, reg: 0x1de, val: 0xef); |
669 | ret = regmap_write(map: dev->regmap, reg: 0x1d8, val: 0x0c); |
670 | ret = regmap_write(map: dev->regmap, reg: 0x1e6, val: 0x02); |
671 | ret = regmap_write(map: dev->regmap, reg: 0x1d7, val: 0x09); |
672 | break; |
673 | case RTL2832_SDR_TUNER_R820T: |
674 | case RTL2832_SDR_TUNER_R828D: |
675 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x5a); |
676 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
677 | ret = regmap_write(map: dev->regmap, reg: 0x115, val: 0x01); |
678 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x80); |
679 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x24); |
680 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xcc); |
681 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
682 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x14); |
683 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
684 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
685 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
686 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
687 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
688 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
689 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
690 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
691 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
692 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x80); |
693 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
694 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
695 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
696 | ret = regmap_write(map: dev->regmap, reg: 0x011, val: 0xf4); |
697 | break; |
698 | case RTL2832_SDR_TUNER_FC2580: |
699 | ret = regmap_write(map: dev->regmap, reg: 0x112, val: 0x39); |
700 | ret = regmap_write(map: dev->regmap, reg: 0x102, val: 0x40); |
701 | ret = regmap_write(map: dev->regmap, reg: 0x103, val: 0x5a); |
702 | ret = regmap_write(map: dev->regmap, reg: 0x1c7, val: 0x2c); |
703 | ret = regmap_write(map: dev->regmap, reg: 0x104, val: 0xcc); |
704 | ret = regmap_write(map: dev->regmap, reg: 0x105, val: 0xbe); |
705 | ret = regmap_write(map: dev->regmap, reg: 0x1c8, val: 0x16); |
706 | ret = regmap_write(map: dev->regmap, reg: 0x106, val: 0x35); |
707 | ret = regmap_write(map: dev->regmap, reg: 0x1c9, val: 0x21); |
708 | ret = regmap_write(map: dev->regmap, reg: 0x1ca, val: 0x21); |
709 | ret = regmap_write(map: dev->regmap, reg: 0x1cb, val: 0x00); |
710 | ret = regmap_write(map: dev->regmap, reg: 0x107, val: 0x40); |
711 | ret = regmap_write(map: dev->regmap, reg: 0x1cd, val: 0x10); |
712 | ret = regmap_write(map: dev->regmap, reg: 0x1ce, val: 0x10); |
713 | ret = regmap_write(map: dev->regmap, reg: 0x108, val: 0x80); |
714 | ret = regmap_write(map: dev->regmap, reg: 0x109, val: 0x7f); |
715 | ret = regmap_write(map: dev->regmap, reg: 0x10a, val: 0x9c); |
716 | ret = regmap_write(map: dev->regmap, reg: 0x10b, val: 0x7f); |
717 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
718 | ret = regmap_write(map: dev->regmap, reg: 0x00e, val: 0xfc); |
719 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x011, val: "\xe9\xf4" , val_count: 2); |
720 | break; |
721 | default: |
722 | dev_notice(&pdev->dev, "Unsupported tuner\n" ); |
723 | } |
724 | |
725 | /* software reset */ |
726 | ret = regmap_update_bits(map: dev->regmap, reg: 0x101, mask: 0x04, val: 0x04); |
727 | if (ret) |
728 | goto err; |
729 | |
730 | ret = regmap_update_bits(map: dev->regmap, reg: 0x101, mask: 0x04, val: 0x00); |
731 | if (ret) |
732 | goto err; |
733 | err: |
734 | return ret; |
735 | }; |
736 | |
737 | static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev) |
738 | { |
739 | struct platform_device *pdev = dev->pdev; |
740 | int ret; |
741 | |
742 | dev_dbg(&pdev->dev, "\n" ); |
743 | |
744 | /* PID filter */ |
745 | ret = regmap_write(map: dev->regmap, reg: 0x061, val: 0xe0); |
746 | if (ret) |
747 | goto err; |
748 | |
749 | /* mode */ |
750 | ret = regmap_write(map: dev->regmap, reg: 0x019, val: 0x20); |
751 | if (ret) |
752 | goto err; |
753 | |
754 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x017, val: "\x11\x10" , val_count: 2); |
755 | if (ret) |
756 | goto err; |
757 | |
758 | /* FSM */ |
759 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x192, val: "\x00\x0f\xff" , val_count: 3); |
760 | if (ret) |
761 | goto err; |
762 | |
763 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x13e, val: "\x40\x00" , val_count: 2); |
764 | if (ret) |
765 | goto err; |
766 | |
767 | ret = regmap_bulk_write(map: dev->regmap, reg: 0x115, val: "\x06\x3f\xce\xcc" , val_count: 4); |
768 | if (ret) |
769 | goto err; |
770 | err: |
771 | return; |
772 | }; |
773 | |
774 | static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev) |
775 | { |
776 | struct platform_device *pdev = dev->pdev; |
777 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
778 | struct dvb_frontend *fe = pdata->dvb_frontend; |
779 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
780 | struct v4l2_ctrl *bandwidth_auto; |
781 | struct v4l2_ctrl *bandwidth; |
782 | |
783 | /* |
784 | * tuner RF (Hz) |
785 | */ |
786 | if (dev->f_tuner == 0) |
787 | return 0; |
788 | |
789 | /* |
790 | * bandwidth (Hz) |
791 | */ |
792 | bandwidth_auto = v4l2_ctrl_find(hdl: &dev->hdl, |
793 | V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); |
794 | bandwidth = v4l2_ctrl_find(hdl: &dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); |
795 | if (v4l2_ctrl_g_ctrl(ctrl: bandwidth_auto)) { |
796 | c->bandwidth_hz = dev->f_adc; |
797 | v4l2_ctrl_s_ctrl(ctrl: bandwidth, val: dev->f_adc); |
798 | } else { |
799 | c->bandwidth_hz = v4l2_ctrl_g_ctrl(ctrl: bandwidth); |
800 | } |
801 | |
802 | c->frequency = dev->f_tuner; |
803 | c->delivery_system = SYS_DVBT; |
804 | |
805 | dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n" , |
806 | c->frequency, c->bandwidth_hz); |
807 | |
808 | if (!test_bit(POWER_ON, &dev->flags)) |
809 | return 0; |
810 | |
811 | if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { |
812 | if (fe->ops.tuner_ops.set_params) |
813 | fe->ops.tuner_ops.set_params(fe); |
814 | } |
815 | |
816 | return 0; |
817 | }; |
818 | |
819 | static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev) |
820 | { |
821 | struct platform_device *pdev = dev->pdev; |
822 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
823 | struct dvb_frontend *fe = pdata->dvb_frontend; |
824 | |
825 | dev_dbg(&pdev->dev, "\n" ); |
826 | |
827 | if (fe->ops.tuner_ops.init) |
828 | fe->ops.tuner_ops.init(fe); |
829 | |
830 | return 0; |
831 | }; |
832 | |
833 | static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev) |
834 | { |
835 | struct platform_device *pdev = dev->pdev; |
836 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
837 | struct dvb_frontend *fe = pdata->dvb_frontend; |
838 | |
839 | dev_dbg(&pdev->dev, "\n" ); |
840 | |
841 | if (fe->ops.tuner_ops.sleep) |
842 | fe->ops.tuner_ops.sleep(fe); |
843 | |
844 | return; |
845 | }; |
846 | |
847 | static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) |
848 | { |
849 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vq); |
850 | struct platform_device *pdev = dev->pdev; |
851 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
852 | struct dvb_usb_device *d = pdata->dvb_usb_device; |
853 | int ret; |
854 | |
855 | dev_dbg(&pdev->dev, "\n" ); |
856 | |
857 | if (!dev->udev) |
858 | return -ENODEV; |
859 | |
860 | if (mutex_lock_interruptible(&dev->v4l2_lock)) |
861 | return -ERESTARTSYS; |
862 | |
863 | if (d->props->power_ctrl) |
864 | d->props->power_ctrl(d, 1); |
865 | |
866 | /* enable ADC */ |
867 | if (d->props->frontend_ctrl) |
868 | d->props->frontend_ctrl(pdata->dvb_frontend, 1); |
869 | |
870 | set_bit(POWER_ON, addr: &dev->flags); |
871 | |
872 | /* wake-up tuner */ |
873 | if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) |
874 | ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); |
875 | else |
876 | ret = rtl2832_sdr_set_tuner(dev); |
877 | if (ret) |
878 | goto err; |
879 | |
880 | ret = rtl2832_sdr_set_tuner_freq(dev); |
881 | if (ret) |
882 | goto err; |
883 | |
884 | ret = rtl2832_sdr_set_adc(dev); |
885 | if (ret) |
886 | goto err; |
887 | |
888 | ret = rtl2832_sdr_alloc_stream_bufs(dev); |
889 | if (ret) |
890 | goto err; |
891 | |
892 | ret = rtl2832_sdr_alloc_urbs(dev); |
893 | if (ret) |
894 | goto err; |
895 | |
896 | dev->sequence = 0; |
897 | |
898 | ret = rtl2832_sdr_submit_urbs(dev); |
899 | if (ret) |
900 | goto err; |
901 | |
902 | err: |
903 | mutex_unlock(lock: &dev->v4l2_lock); |
904 | |
905 | return ret; |
906 | } |
907 | |
908 | static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) |
909 | { |
910 | struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(q: vq); |
911 | struct platform_device *pdev = dev->pdev; |
912 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
913 | struct dvb_usb_device *d = pdata->dvb_usb_device; |
914 | |
915 | dev_dbg(&pdev->dev, "\n" ); |
916 | |
917 | mutex_lock(&dev->v4l2_lock); |
918 | |
919 | rtl2832_sdr_kill_urbs(dev); |
920 | rtl2832_sdr_free_urbs(dev); |
921 | rtl2832_sdr_free_stream_bufs(dev); |
922 | rtl2832_sdr_cleanup_queued_bufs(dev); |
923 | rtl2832_sdr_unset_adc(dev); |
924 | |
925 | /* sleep tuner */ |
926 | if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) |
927 | v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); |
928 | else |
929 | rtl2832_sdr_unset_tuner(dev); |
930 | |
931 | clear_bit(POWER_ON, addr: &dev->flags); |
932 | |
933 | /* disable ADC */ |
934 | if (d->props->frontend_ctrl) |
935 | d->props->frontend_ctrl(pdata->dvb_frontend, 0); |
936 | |
937 | if (d->props->power_ctrl) |
938 | d->props->power_ctrl(d, 0); |
939 | |
940 | mutex_unlock(lock: &dev->v4l2_lock); |
941 | } |
942 | |
943 | static const struct vb2_ops rtl2832_sdr_vb2_ops = { |
944 | .queue_setup = rtl2832_sdr_queue_setup, |
945 | .buf_prepare = rtl2832_sdr_buf_prepare, |
946 | .buf_queue = rtl2832_sdr_buf_queue, |
947 | .start_streaming = rtl2832_sdr_start_streaming, |
948 | .stop_streaming = rtl2832_sdr_stop_streaming, |
949 | .wait_prepare = vb2_ops_wait_prepare, |
950 | .wait_finish = vb2_ops_wait_finish, |
951 | }; |
952 | |
953 | static int rtl2832_sdr_g_tuner(struct file *file, void *priv, |
954 | struct v4l2_tuner *v) |
955 | { |
956 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
957 | struct platform_device *pdev = dev->pdev; |
958 | int ret; |
959 | |
960 | dev_dbg(&pdev->dev, "index=%d type=%d\n" , v->index, v->type); |
961 | |
962 | if (v->index == 0) { |
963 | strscpy(p: v->name, q: "ADC: Realtek RTL2832" , size: sizeof(v->name)); |
964 | v->type = V4L2_TUNER_ADC; |
965 | v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; |
966 | v->rangelow = 300000; |
967 | v->rangehigh = 3200000; |
968 | ret = 0; |
969 | } else if (v->index == 1 && |
970 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) { |
971 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); |
972 | } else if (v->index == 1) { |
973 | strscpy(p: v->name, q: "RF: <unknown>" , size: sizeof(v->name)); |
974 | v->type = V4L2_TUNER_RF; |
975 | v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; |
976 | v->rangelow = 50000000; |
977 | v->rangehigh = 2000000000; |
978 | ret = 0; |
979 | } else { |
980 | ret = -EINVAL; |
981 | } |
982 | return ret; |
983 | } |
984 | |
985 | static int rtl2832_sdr_s_tuner(struct file *file, void *priv, |
986 | const struct v4l2_tuner *v) |
987 | { |
988 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
989 | struct platform_device *pdev = dev->pdev; |
990 | int ret; |
991 | |
992 | dev_dbg(&pdev->dev, "\n" ); |
993 | |
994 | if (v->index == 0) { |
995 | ret = 0; |
996 | } else if (v->index == 1 && |
997 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) { |
998 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); |
999 | } else if (v->index == 1) { |
1000 | ret = 0; |
1001 | } else { |
1002 | ret = -EINVAL; |
1003 | } |
1004 | return ret; |
1005 | } |
1006 | |
1007 | static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv, |
1008 | struct v4l2_frequency_band *band) |
1009 | { |
1010 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1011 | struct platform_device *pdev = dev->pdev; |
1012 | int ret; |
1013 | |
1014 | dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n" , |
1015 | band->tuner, band->type, band->index); |
1016 | |
1017 | if (band->tuner == 0) { |
1018 | if (band->index >= ARRAY_SIZE(bands_adc)) |
1019 | return -EINVAL; |
1020 | |
1021 | *band = bands_adc[band->index]; |
1022 | ret = 0; |
1023 | } else if (band->tuner == 1 && |
1024 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) { |
1025 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band); |
1026 | } else if (band->tuner == 1) { |
1027 | if (band->index >= ARRAY_SIZE(bands_fm)) |
1028 | return -EINVAL; |
1029 | |
1030 | *band = bands_fm[band->index]; |
1031 | ret = 0; |
1032 | } else { |
1033 | ret = -EINVAL; |
1034 | } |
1035 | return ret; |
1036 | } |
1037 | |
1038 | static int rtl2832_sdr_g_frequency(struct file *file, void *priv, |
1039 | struct v4l2_frequency *f) |
1040 | { |
1041 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1042 | struct platform_device *pdev = dev->pdev; |
1043 | int ret; |
1044 | |
1045 | dev_dbg(&pdev->dev, "tuner=%d type=%d\n" , f->tuner, f->type); |
1046 | |
1047 | if (f->tuner == 0) { |
1048 | f->frequency = dev->f_adc; |
1049 | f->type = V4L2_TUNER_ADC; |
1050 | ret = 0; |
1051 | } else if (f->tuner == 1 && |
1052 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) { |
1053 | f->type = V4L2_TUNER_RF; |
1054 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); |
1055 | } else if (f->tuner == 1) { |
1056 | f->frequency = dev->f_tuner; |
1057 | f->type = V4L2_TUNER_RF; |
1058 | ret = 0; |
1059 | } else { |
1060 | ret = -EINVAL; |
1061 | } |
1062 | return ret; |
1063 | } |
1064 | |
1065 | static int rtl2832_sdr_s_frequency(struct file *file, void *priv, |
1066 | const struct v4l2_frequency *f) |
1067 | { |
1068 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1069 | struct platform_device *pdev = dev->pdev; |
1070 | int ret, band; |
1071 | |
1072 | dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n" , |
1073 | f->tuner, f->type, f->frequency); |
1074 | |
1075 | /* ADC band midpoints */ |
1076 | #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) |
1077 | #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) |
1078 | |
1079 | if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { |
1080 | if (f->frequency < BAND_ADC_0) |
1081 | band = 0; |
1082 | else if (f->frequency < BAND_ADC_1) |
1083 | band = 1; |
1084 | else |
1085 | band = 2; |
1086 | |
1087 | dev->f_adc = clamp_t(unsigned int, f->frequency, |
1088 | bands_adc[band].rangelow, |
1089 | bands_adc[band].rangehigh); |
1090 | |
1091 | dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n" , dev->f_adc); |
1092 | ret = rtl2832_sdr_set_adc(dev); |
1093 | } else if (f->tuner == 1 && |
1094 | V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { |
1095 | ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); |
1096 | } else if (f->tuner == 1) { |
1097 | dev->f_tuner = clamp_t(unsigned int, f->frequency, |
1098 | bands_fm[0].rangelow, |
1099 | bands_fm[0].rangehigh); |
1100 | dev_dbg(&pdev->dev, "RF frequency=%u Hz\n" , f->frequency); |
1101 | |
1102 | ret = rtl2832_sdr_set_tuner_freq(dev); |
1103 | } else { |
1104 | ret = -EINVAL; |
1105 | } |
1106 | return ret; |
1107 | } |
1108 | |
1109 | static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, |
1110 | struct v4l2_fmtdesc *f) |
1111 | { |
1112 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1113 | struct platform_device *pdev = dev->pdev; |
1114 | |
1115 | dev_dbg(&pdev->dev, "\n" ); |
1116 | |
1117 | if (f->index >= dev->num_formats) |
1118 | return -EINVAL; |
1119 | |
1120 | f->pixelformat = formats[f->index].pixelformat; |
1121 | |
1122 | return 0; |
1123 | } |
1124 | |
1125 | static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, |
1126 | struct v4l2_format *f) |
1127 | { |
1128 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1129 | struct platform_device *pdev = dev->pdev; |
1130 | |
1131 | dev_dbg(&pdev->dev, "\n" ); |
1132 | |
1133 | f->fmt.sdr.pixelformat = dev->pixelformat; |
1134 | f->fmt.sdr.buffersize = dev->buffersize; |
1135 | |
1136 | return 0; |
1137 | } |
1138 | |
1139 | static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, |
1140 | struct v4l2_format *f) |
1141 | { |
1142 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1143 | struct platform_device *pdev = dev->pdev; |
1144 | struct vb2_queue *q = &dev->vb_queue; |
1145 | int i; |
1146 | |
1147 | dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n" , |
1148 | (char *)&f->fmt.sdr.pixelformat); |
1149 | |
1150 | if (vb2_is_busy(q)) |
1151 | return -EBUSY; |
1152 | |
1153 | for (i = 0; i < dev->num_formats; i++) { |
1154 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
1155 | dev->pixelformat = formats[i].pixelformat; |
1156 | dev->buffersize = formats[i].buffersize; |
1157 | f->fmt.sdr.buffersize = formats[i].buffersize; |
1158 | return 0; |
1159 | } |
1160 | } |
1161 | |
1162 | dev->pixelformat = formats[0].pixelformat; |
1163 | dev->buffersize = formats[0].buffersize; |
1164 | f->fmt.sdr.pixelformat = formats[0].pixelformat; |
1165 | f->fmt.sdr.buffersize = formats[0].buffersize; |
1166 | |
1167 | return 0; |
1168 | } |
1169 | |
1170 | static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, |
1171 | struct v4l2_format *f) |
1172 | { |
1173 | struct rtl2832_sdr_dev *dev = video_drvdata(file); |
1174 | struct platform_device *pdev = dev->pdev; |
1175 | int i; |
1176 | |
1177 | dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n" , |
1178 | (char *)&f->fmt.sdr.pixelformat); |
1179 | |
1180 | for (i = 0; i < dev->num_formats; i++) { |
1181 | if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
1182 | f->fmt.sdr.buffersize = formats[i].buffersize; |
1183 | return 0; |
1184 | } |
1185 | } |
1186 | |
1187 | f->fmt.sdr.pixelformat = formats[0].pixelformat; |
1188 | f->fmt.sdr.buffersize = formats[0].buffersize; |
1189 | |
1190 | return 0; |
1191 | } |
1192 | |
1193 | static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = { |
1194 | .vidioc_querycap = rtl2832_sdr_querycap, |
1195 | |
1196 | .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap, |
1197 | .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap, |
1198 | .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap, |
1199 | .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap, |
1200 | |
1201 | .vidioc_reqbufs = vb2_ioctl_reqbufs, |
1202 | .vidioc_create_bufs = vb2_ioctl_create_bufs, |
1203 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
1204 | .vidioc_querybuf = vb2_ioctl_querybuf, |
1205 | .vidioc_qbuf = vb2_ioctl_qbuf, |
1206 | .vidioc_dqbuf = vb2_ioctl_dqbuf, |
1207 | |
1208 | .vidioc_streamon = vb2_ioctl_streamon, |
1209 | .vidioc_streamoff = vb2_ioctl_streamoff, |
1210 | |
1211 | .vidioc_g_tuner = rtl2832_sdr_g_tuner, |
1212 | .vidioc_s_tuner = rtl2832_sdr_s_tuner, |
1213 | |
1214 | .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands, |
1215 | .vidioc_g_frequency = rtl2832_sdr_g_frequency, |
1216 | .vidioc_s_frequency = rtl2832_sdr_s_frequency, |
1217 | |
1218 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
1219 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
1220 | .vidioc_log_status = v4l2_ctrl_log_status, |
1221 | }; |
1222 | |
1223 | static const struct v4l2_file_operations rtl2832_sdr_fops = { |
1224 | .owner = THIS_MODULE, |
1225 | .open = v4l2_fh_open, |
1226 | .release = vb2_fop_release, |
1227 | .read = vb2_fop_read, |
1228 | .poll = vb2_fop_poll, |
1229 | .mmap = vb2_fop_mmap, |
1230 | .unlocked_ioctl = video_ioctl2, |
1231 | }; |
1232 | |
1233 | static struct video_device rtl2832_sdr_template = { |
1234 | .name = "Realtek RTL2832 SDR" , |
1235 | .release = video_device_release_empty, |
1236 | .fops = &rtl2832_sdr_fops, |
1237 | .ioctl_ops = &rtl2832_sdr_ioctl_ops, |
1238 | .device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | |
1239 | V4L2_CAP_READWRITE | V4L2_CAP_TUNER, |
1240 | }; |
1241 | |
1242 | static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl) |
1243 | { |
1244 | struct rtl2832_sdr_dev *dev = |
1245 | container_of(ctrl->handler, struct rtl2832_sdr_dev, |
1246 | hdl); |
1247 | struct platform_device *pdev = dev->pdev; |
1248 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
1249 | struct dvb_frontend *fe = pdata->dvb_frontend; |
1250 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
1251 | int ret; |
1252 | |
1253 | dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n" , |
1254 | ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum, |
1255 | ctrl->step); |
1256 | |
1257 | switch (ctrl->id) { |
1258 | case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: |
1259 | case V4L2_CID_RF_TUNER_BANDWIDTH: |
1260 | /* TODO: these controls should be moved to tuner drivers */ |
1261 | if (dev->bandwidth_auto->val) { |
1262 | /* Round towards the closest legal value */ |
1263 | s32 val = dev->f_adc + div_u64(dividend: dev->bandwidth->step, divisor: 2); |
1264 | u32 offset; |
1265 | |
1266 | val = clamp_t(s32, val, dev->bandwidth->minimum, |
1267 | dev->bandwidth->maximum); |
1268 | offset = val - dev->bandwidth->minimum; |
1269 | offset = dev->bandwidth->step * |
1270 | div_u64(dividend: offset, divisor: dev->bandwidth->step); |
1271 | dev->bandwidth->val = dev->bandwidth->minimum + offset; |
1272 | } |
1273 | c->bandwidth_hz = dev->bandwidth->val; |
1274 | |
1275 | if (!test_bit(POWER_ON, &dev->flags)) |
1276 | return 0; |
1277 | |
1278 | if (fe->ops.tuner_ops.set_params) |
1279 | ret = fe->ops.tuner_ops.set_params(fe); |
1280 | else |
1281 | ret = 0; |
1282 | break; |
1283 | default: |
1284 | ret = -EINVAL; |
1285 | } |
1286 | |
1287 | return ret; |
1288 | } |
1289 | |
1290 | static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { |
1291 | .s_ctrl = rtl2832_sdr_s_ctrl, |
1292 | }; |
1293 | |
1294 | static void rtl2832_sdr_video_release(struct v4l2_device *v) |
1295 | { |
1296 | struct rtl2832_sdr_dev *dev = |
1297 | container_of(v, struct rtl2832_sdr_dev, v4l2_dev); |
1298 | struct platform_device *pdev = dev->pdev; |
1299 | |
1300 | dev_dbg(&pdev->dev, "\n" ); |
1301 | |
1302 | v4l2_ctrl_handler_free(hdl: &dev->hdl); |
1303 | v4l2_device_unregister(v4l2_dev: &dev->v4l2_dev); |
1304 | kfree(objp: dev); |
1305 | } |
1306 | |
1307 | /* Platform driver interface */ |
1308 | static int rtl2832_sdr_probe(struct platform_device *pdev) |
1309 | { |
1310 | struct rtl2832_sdr_dev *dev; |
1311 | struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; |
1312 | const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops; |
1313 | struct v4l2_subdev *subdev; |
1314 | int ret; |
1315 | |
1316 | dev_dbg(&pdev->dev, "\n" ); |
1317 | |
1318 | if (!pdata) { |
1319 | dev_err(&pdev->dev, "Cannot proceed without platform data\n" ); |
1320 | ret = -EINVAL; |
1321 | goto err; |
1322 | } |
1323 | if (!pdev->dev.parent->driver) { |
1324 | dev_dbg(&pdev->dev, "No parent device\n" ); |
1325 | ret = -EINVAL; |
1326 | goto err; |
1327 | } |
1328 | /* try to refcount host drv since we are the consumer */ |
1329 | if (!try_module_get(module: pdev->dev.parent->driver->owner)) { |
1330 | dev_err(&pdev->dev, "Refcount fail" ); |
1331 | ret = -EINVAL; |
1332 | goto err; |
1333 | } |
1334 | dev = kzalloc(size: sizeof(*dev), GFP_KERNEL); |
1335 | if (dev == NULL) { |
1336 | ret = -ENOMEM; |
1337 | goto err_module_put; |
1338 | } |
1339 | |
1340 | /* setup the state */ |
1341 | subdev = pdata->v4l2_subdev; |
1342 | dev->v4l2_subdev = pdata->v4l2_subdev; |
1343 | dev->pdev = pdev; |
1344 | dev->regmap = pdata->regmap; |
1345 | dev->udev = pdata->dvb_usb_device->udev; |
1346 | dev->f_adc = bands_adc[0].rangelow; |
1347 | dev->f_tuner = bands_fm[0].rangelow; |
1348 | dev->pixelformat = formats[0].pixelformat; |
1349 | dev->buffersize = formats[0].buffersize; |
1350 | dev->num_formats = NUM_FORMATS; |
1351 | if (!rtl2832_sdr_emulated_fmt) |
1352 | dev->num_formats -= 1; |
1353 | |
1354 | mutex_init(&dev->v4l2_lock); |
1355 | mutex_init(&dev->vb_queue_lock); |
1356 | spin_lock_init(&dev->queued_bufs_lock); |
1357 | INIT_LIST_HEAD(list: &dev->queued_bufs); |
1358 | |
1359 | /* Init videobuf2 queue structure */ |
1360 | dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; |
1361 | dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; |
1362 | dev->vb_queue.drv_priv = dev; |
1363 | dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf); |
1364 | dev->vb_queue.ops = &rtl2832_sdr_vb2_ops; |
1365 | dev->vb_queue.mem_ops = &vb2_vmalloc_memops; |
1366 | dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
1367 | ret = vb2_queue_init(q: &dev->vb_queue); |
1368 | if (ret) { |
1369 | dev_err(&pdev->dev, "Could not initialize vb2 queue\n" ); |
1370 | goto err_kfree; |
1371 | } |
1372 | |
1373 | /* Register controls */ |
1374 | switch (pdata->tuner) { |
1375 | case RTL2832_SDR_TUNER_E4000: |
1376 | v4l2_ctrl_handler_init(&dev->hdl, 9); |
1377 | if (subdev) |
1378 | v4l2_ctrl_add_handler(hdl: &dev->hdl, add: subdev->ctrl_handler, |
1379 | NULL, from_other_dev: true); |
1380 | break; |
1381 | case RTL2832_SDR_TUNER_R820T: |
1382 | case RTL2832_SDR_TUNER_R828D: |
1383 | v4l2_ctrl_handler_init(&dev->hdl, 2); |
1384 | dev->bandwidth_auto = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1385 | V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, |
1386 | min: 0, max: 1, step: 1, def: 1); |
1387 | dev->bandwidth = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1388 | V4L2_CID_RF_TUNER_BANDWIDTH, |
1389 | min: 0, max: 8000000, step: 100000, def: 0); |
1390 | v4l2_ctrl_auto_cluster(ncontrols: 2, controls: &dev->bandwidth_auto, manual_val: 0, set_volatile: false); |
1391 | break; |
1392 | case RTL2832_SDR_TUNER_FC0012: |
1393 | case RTL2832_SDR_TUNER_FC0013: |
1394 | v4l2_ctrl_handler_init(&dev->hdl, 2); |
1395 | dev->bandwidth_auto = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1396 | V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, |
1397 | min: 0, max: 1, step: 1, def: 1); |
1398 | dev->bandwidth = v4l2_ctrl_new_std(hdl: &dev->hdl, ops, |
1399 | V4L2_CID_RF_TUNER_BANDWIDTH, |
1400 | min: 6000000, max: 8000000, step: 1000000, |
1401 | def: 6000000); |
1402 | v4l2_ctrl_auto_cluster(ncontrols: 2, controls: &dev->bandwidth_auto, manual_val: 0, set_volatile: false); |
1403 | break; |
1404 | case RTL2832_SDR_TUNER_FC2580: |
1405 | v4l2_ctrl_handler_init(&dev->hdl, 2); |
1406 | if (subdev) |
1407 | v4l2_ctrl_add_handler(hdl: &dev->hdl, add: subdev->ctrl_handler, |
1408 | NULL, from_other_dev: true); |
1409 | break; |
1410 | default: |
1411 | v4l2_ctrl_handler_init(&dev->hdl, 0); |
1412 | dev_err(&pdev->dev, "Unsupported tuner\n" ); |
1413 | ret = -ENODEV; |
1414 | goto err_v4l2_ctrl_handler_free; |
1415 | } |
1416 | if (dev->hdl.error) { |
1417 | ret = dev->hdl.error; |
1418 | dev_err(&pdev->dev, "Could not initialize controls\n" ); |
1419 | goto err_v4l2_ctrl_handler_free; |
1420 | } |
1421 | |
1422 | /* Init video_device structure */ |
1423 | dev->vdev = rtl2832_sdr_template; |
1424 | dev->vdev.queue = &dev->vb_queue; |
1425 | dev->vdev.queue->lock = &dev->vb_queue_lock; |
1426 | video_set_drvdata(vdev: &dev->vdev, data: dev); |
1427 | |
1428 | /* Register the v4l2_device structure */ |
1429 | dev->v4l2_dev.release = rtl2832_sdr_video_release; |
1430 | ret = v4l2_device_register(dev: &pdev->dev, v4l2_dev: &dev->v4l2_dev); |
1431 | if (ret) { |
1432 | dev_err(&pdev->dev, "Failed to register v4l2-device %d\n" , ret); |
1433 | goto err_v4l2_ctrl_handler_free; |
1434 | } |
1435 | |
1436 | dev->v4l2_dev.ctrl_handler = &dev->hdl; |
1437 | dev->vdev.v4l2_dev = &dev->v4l2_dev; |
1438 | dev->vdev.lock = &dev->v4l2_lock; |
1439 | dev->vdev.vfl_dir = VFL_DIR_RX; |
1440 | |
1441 | ret = video_register_device(vdev: &dev->vdev, type: VFL_TYPE_SDR, nr: -1); |
1442 | if (ret) { |
1443 | dev_err(&pdev->dev, "Failed to register as video device %d\n" , |
1444 | ret); |
1445 | goto err_v4l2_device_unregister; |
1446 | } |
1447 | dev_info(&pdev->dev, "Registered as %s\n" , |
1448 | video_device_node_name(&dev->vdev)); |
1449 | dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n" ); |
1450 | dev_notice(&pdev->dev, |
1451 | "SDR API is still slightly experimental and functionality changes may follow\n" ); |
1452 | platform_set_drvdata(pdev, data: dev); |
1453 | return 0; |
1454 | err_v4l2_device_unregister: |
1455 | v4l2_device_unregister(v4l2_dev: &dev->v4l2_dev); |
1456 | err_v4l2_ctrl_handler_free: |
1457 | v4l2_ctrl_handler_free(hdl: &dev->hdl); |
1458 | err_kfree: |
1459 | kfree(objp: dev); |
1460 | err_module_put: |
1461 | module_put(module: pdev->dev.parent->driver->owner); |
1462 | err: |
1463 | return ret; |
1464 | } |
1465 | |
1466 | static void rtl2832_sdr_remove(struct platform_device *pdev) |
1467 | { |
1468 | struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev); |
1469 | |
1470 | dev_dbg(&pdev->dev, "\n" ); |
1471 | |
1472 | mutex_lock(&dev->vb_queue_lock); |
1473 | mutex_lock(&dev->v4l2_lock); |
1474 | /* No need to keep the urbs around after disconnection */ |
1475 | dev->udev = NULL; |
1476 | v4l2_device_disconnect(v4l2_dev: &dev->v4l2_dev); |
1477 | video_unregister_device(vdev: &dev->vdev); |
1478 | mutex_unlock(lock: &dev->v4l2_lock); |
1479 | mutex_unlock(lock: &dev->vb_queue_lock); |
1480 | v4l2_device_put(v4l2_dev: &dev->v4l2_dev); |
1481 | module_put(module: pdev->dev.parent->driver->owner); |
1482 | } |
1483 | |
1484 | static struct platform_driver rtl2832_sdr_driver = { |
1485 | .driver = { |
1486 | .name = "rtl2832_sdr" , |
1487 | }, |
1488 | .probe = rtl2832_sdr_probe, |
1489 | .remove_new = rtl2832_sdr_remove, |
1490 | }; |
1491 | module_platform_driver(rtl2832_sdr_driver); |
1492 | |
1493 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>" ); |
1494 | MODULE_DESCRIPTION("Realtek RTL2832 SDR driver" ); |
1495 | MODULE_LICENSE("GPL" ); |
1496 | |