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 * http://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(&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(&buf->list); 166 leave: 167 spin_unlock_irqrestore(&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(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 "videobuf is full, %d packets dropped\n", 249 dev->vb_full); 250 goto skip; 251 } 252 253 /* fill framebuffer */ 254 ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0); 255 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer, 256 urb->actual_length); 257 vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, len); 258 fbuf->vb.vb2_buf.timestamp = ktime_get_ns(); 259 fbuf->vb.sequence = dev->sequence++; 260 vb2_buffer_done(&fbuf->vb.vb2_buf, 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(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(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->udev, dev->buf_size, 311 dev->buf_list[dev->buf_num], 312 dev->dma_addr[dev->buf_num]); 313 } 314 } 315 clear_bit(URB_BUF, &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->udev, 332 BULK_BUFFER_SIZE, GFP_KERNEL, 333 &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, &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(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(0, GFP_KERNEL); 378 if (!dev->urb_list[i]) { 379 for (j = 0; j < i; j++) 380 usb_free_urb(dev->urb_list[j]); 381 return -ENOMEM; 382 } 383 usb_fill_bulk_urb(dev->urb_list[i], 384 dev->udev, 385 usb_rcvbulkpipe(dev->udev, 0x81), 386 dev->buf_list[i], 387 BULK_BUFFER_SIZE, 388 rtl2832_sdr_urb_complete, dev); 389 390 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 391 dev->urb_list[i]->transfer_dma = dev->dma_addr[i]; 392 dev->urbs_initialized++; 393 } 394 395 return 0; 396 } 397 398 /* Must be called with vb_queue_lock hold */ 399 static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev) 400 { 401 struct platform_device *pdev = dev->pdev; 402 unsigned long flags; 403 404 dev_dbg(&pdev->dev, "\n"); 405 406 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 407 while (!list_empty(&dev->queued_bufs)) { 408 struct rtl2832_sdr_frame_buf *buf; 409 410 buf = list_entry(dev->queued_bufs.next, 411 struct rtl2832_sdr_frame_buf, list); 412 list_del(&buf->list); 413 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 414 } 415 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 416 } 417 418 static int rtl2832_sdr_querycap(struct file *file, void *fh, 419 struct v4l2_capability *cap) 420 { 421 struct rtl2832_sdr_dev *dev = video_drvdata(file); 422 struct platform_device *pdev = dev->pdev; 423 424 dev_dbg(&pdev->dev, "\n"); 425 426 strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); 427 strscpy(cap->card, dev->vdev.name, sizeof(cap->card)); 428 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 429 return 0; 430 } 431 432 /* Videobuf2 operations */ 433 static int rtl2832_sdr_queue_setup(struct vb2_queue *vq, 434 unsigned int *nbuffers, 435 unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) 436 { 437 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 438 struct platform_device *pdev = dev->pdev; 439 440 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers); 441 442 /* Need at least 8 buffers */ 443 if (vq->num_buffers + *nbuffers < 8) 444 *nbuffers = 8 - vq->num_buffers; 445 *nplanes = 1; 446 sizes[0] = PAGE_ALIGN(dev->buffersize); 447 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); 448 return 0; 449 } 450 451 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) 452 { 453 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 454 455 /* Don't allow queueing new buffers after device disconnection */ 456 if (!dev->udev) 457 return -ENODEV; 458 459 return 0; 460 } 461 462 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) 463 { 464 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 465 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 466 struct rtl2832_sdr_frame_buf *buf = 467 container_of(vbuf, struct rtl2832_sdr_frame_buf, vb); 468 unsigned long flags; 469 470 /* Check the device has not disconnected between prep and queuing */ 471 if (!dev->udev) { 472 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 473 return; 474 } 475 476 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 477 list_add_tail(&buf->list, &dev->queued_bufs); 478 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 479 } 480 481 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev) 482 { 483 struct platform_device *pdev = dev->pdev; 484 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 485 struct dvb_frontend *fe = pdata->dvb_frontend; 486 int ret; 487 unsigned int f_sr, f_if; 488 u8 buf[4], u8tmp1, u8tmp2; 489 u64 u64tmp; 490 u32 u32tmp; 491 492 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc); 493 494 if (!test_bit(POWER_ON, &dev->flags)) 495 return 0; 496 497 if (dev->f_adc == 0) 498 return 0; 499 500 f_sr = dev->f_adc; 501 502 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x00\x00", 2); 503 if (ret) 504 goto err; 505 506 ret = regmap_bulk_write(dev->regmap, 0x115, "\x00\x00\x00\x00", 4); 507 if (ret) 508 goto err; 509 510 /* get IF from tuner */ 511 if (fe->ops.tuner_ops.get_if_frequency) 512 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); 513 else 514 ret = -EINVAL; 515 516 if (ret) 517 goto err; 518 519 /* program IF */ 520 u64tmp = f_if % pdata->clk; 521 u64tmp *= 0x400000; 522 u64tmp = div_u64(u64tmp, pdata->clk); 523 u64tmp = -u64tmp; 524 u32tmp = u64tmp & 0x3fffff; 525 526 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp); 527 528 buf[0] = (u32tmp >> 16) & 0xff; 529 buf[1] = (u32tmp >> 8) & 0xff; 530 buf[2] = (u32tmp >> 0) & 0xff; 531 532 ret = regmap_bulk_write(dev->regmap, 0x119, buf, 3); 533 if (ret) 534 goto err; 535 536 /* BB / IF mode */ 537 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ 538 if (f_if) { 539 u8tmp1 = 0x1a; /* disable Zero-IF */ 540 u8tmp2 = 0x8d; /* enable ADC I */ 541 } else { 542 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ 543 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ 544 } 545 546 ret = regmap_write(dev->regmap, 0x1b1, u8tmp1); 547 if (ret) 548 goto err; 549 550 ret = regmap_write(dev->regmap, 0x008, u8tmp2); 551 if (ret) 552 goto err; 553 554 ret = regmap_write(dev->regmap, 0x006, 0x80); 555 if (ret) 556 goto err; 557 558 /* program sampling rate (resampling down) */ 559 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U); 560 u32tmp <<= 2; 561 buf[0] = (u32tmp >> 24) & 0xff; 562 buf[1] = (u32tmp >> 16) & 0xff; 563 buf[2] = (u32tmp >> 8) & 0xff; 564 buf[3] = (u32tmp >> 0) & 0xff; 565 ret = regmap_bulk_write(dev->regmap, 0x19f, buf, 4); 566 if (ret) 567 goto err; 568 569 /* low-pass filter */ 570 ret = regmap_bulk_write(dev->regmap, 0x11c, 571 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5", 572 20); 573 if (ret) 574 goto err; 575 576 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 577 if (ret) 578 goto err; 579 580 /* mode */ 581 ret = regmap_write(dev->regmap, 0x019, 0x05); 582 if (ret) 583 goto err; 584 585 ret = regmap_bulk_write(dev->regmap, 0x01a, 586 "\x1b\x16\x0d\x06\x01\xff", 6); 587 if (ret) 588 goto err; 589 590 /* FSM */ 591 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\xf0\x0f", 3); 592 if (ret) 593 goto err; 594 595 /* PID filter */ 596 ret = regmap_write(dev->regmap, 0x061, 0x60); 597 if (ret) 598 goto err; 599 600 /* used RF tuner based settings */ 601 switch (pdata->tuner) { 602 case RTL2832_SDR_TUNER_E4000: 603 ret = regmap_write(dev->regmap, 0x112, 0x5a); 604 ret = regmap_write(dev->regmap, 0x102, 0x40); 605 ret = regmap_write(dev->regmap, 0x103, 0x5a); 606 ret = regmap_write(dev->regmap, 0x1c7, 0x30); 607 ret = regmap_write(dev->regmap, 0x104, 0xd0); 608 ret = regmap_write(dev->regmap, 0x105, 0xbe); 609 ret = regmap_write(dev->regmap, 0x1c8, 0x18); 610 ret = regmap_write(dev->regmap, 0x106, 0x35); 611 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 612 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 613 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 614 ret = regmap_write(dev->regmap, 0x107, 0x40); 615 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 616 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 617 ret = regmap_write(dev->regmap, 0x108, 0x80); 618 ret = regmap_write(dev->regmap, 0x109, 0x7f); 619 ret = regmap_write(dev->regmap, 0x10a, 0x80); 620 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 621 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 622 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 623 ret = regmap_write(dev->regmap, 0x011, 0xd4); 624 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 625 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 626 ret = regmap_write(dev->regmap, 0x1db, 0x00); 627 ret = regmap_write(dev->regmap, 0x1dd, 0x14); 628 ret = regmap_write(dev->regmap, 0x1de, 0xec); 629 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 630 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 631 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 632 ret = regmap_write(dev->regmap, 0x00d, 0x83); 633 ret = regmap_write(dev->regmap, 0x010, 0x49); 634 ret = regmap_write(dev->regmap, 0x00d, 0x87); 635 ret = regmap_write(dev->regmap, 0x00d, 0x85); 636 ret = regmap_write(dev->regmap, 0x013, 0x02); 637 break; 638 case RTL2832_SDR_TUNER_FC0012: 639 case RTL2832_SDR_TUNER_FC0013: 640 ret = regmap_write(dev->regmap, 0x112, 0x5a); 641 ret = regmap_write(dev->regmap, 0x102, 0x40); 642 ret = regmap_write(dev->regmap, 0x103, 0x5a); 643 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 644 ret = regmap_write(dev->regmap, 0x104, 0xcc); 645 ret = regmap_write(dev->regmap, 0x105, 0xbe); 646 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 647 ret = regmap_write(dev->regmap, 0x106, 0x35); 648 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 649 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 650 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 651 ret = regmap_write(dev->regmap, 0x107, 0x40); 652 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 653 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 654 ret = regmap_write(dev->regmap, 0x108, 0x80); 655 ret = regmap_write(dev->regmap, 0x109, 0x7f); 656 ret = regmap_write(dev->regmap, 0x10a, 0x80); 657 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 658 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 659 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 660 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xbf", 2); 661 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 662 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 663 ret = regmap_write(dev->regmap, 0x1db, 0x00); 664 ret = regmap_write(dev->regmap, 0x1dd, 0x11); 665 ret = regmap_write(dev->regmap, 0x1de, 0xef); 666 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 667 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 668 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 669 break; 670 case RTL2832_SDR_TUNER_R820T: 671 case RTL2832_SDR_TUNER_R828D: 672 ret = regmap_write(dev->regmap, 0x112, 0x5a); 673 ret = regmap_write(dev->regmap, 0x102, 0x40); 674 ret = regmap_write(dev->regmap, 0x115, 0x01); 675 ret = regmap_write(dev->regmap, 0x103, 0x80); 676 ret = regmap_write(dev->regmap, 0x1c7, 0x24); 677 ret = regmap_write(dev->regmap, 0x104, 0xcc); 678 ret = regmap_write(dev->regmap, 0x105, 0xbe); 679 ret = regmap_write(dev->regmap, 0x1c8, 0x14); 680 ret = regmap_write(dev->regmap, 0x106, 0x35); 681 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 682 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 683 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 684 ret = regmap_write(dev->regmap, 0x107, 0x40); 685 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 686 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 687 ret = regmap_write(dev->regmap, 0x108, 0x80); 688 ret = regmap_write(dev->regmap, 0x109, 0x7f); 689 ret = regmap_write(dev->regmap, 0x10a, 0x80); 690 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 691 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 692 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 693 ret = regmap_write(dev->regmap, 0x011, 0xf4); 694 break; 695 case RTL2832_SDR_TUNER_FC2580: 696 ret = regmap_write(dev->regmap, 0x112, 0x39); 697 ret = regmap_write(dev->regmap, 0x102, 0x40); 698 ret = regmap_write(dev->regmap, 0x103, 0x5a); 699 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 700 ret = regmap_write(dev->regmap, 0x104, 0xcc); 701 ret = regmap_write(dev->regmap, 0x105, 0xbe); 702 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 703 ret = regmap_write(dev->regmap, 0x106, 0x35); 704 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 705 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 706 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 707 ret = regmap_write(dev->regmap, 0x107, 0x40); 708 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 709 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 710 ret = regmap_write(dev->regmap, 0x108, 0x80); 711 ret = regmap_write(dev->regmap, 0x109, 0x7f); 712 ret = regmap_write(dev->regmap, 0x10a, 0x9c); 713 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 714 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 715 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 716 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xf4", 2); 717 break; 718 default: 719 dev_notice(&pdev->dev, "Unsupported tuner\n"); 720 } 721 722 /* software reset */ 723 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x04); 724 if (ret) 725 goto err; 726 727 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x00); 728 if (ret) 729 goto err; 730 err: 731 return ret; 732 }; 733 734 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev) 735 { 736 struct platform_device *pdev = dev->pdev; 737 int ret; 738 739 dev_dbg(&pdev->dev, "\n"); 740 741 /* PID filter */ 742 ret = regmap_write(dev->regmap, 0x061, 0xe0); 743 if (ret) 744 goto err; 745 746 /* mode */ 747 ret = regmap_write(dev->regmap, 0x019, 0x20); 748 if (ret) 749 goto err; 750 751 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 752 if (ret) 753 goto err; 754 755 /* FSM */ 756 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3); 757 if (ret) 758 goto err; 759 760 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x40\x00", 2); 761 if (ret) 762 goto err; 763 764 ret = regmap_bulk_write(dev->regmap, 0x115, "\x06\x3f\xce\xcc", 4); 765 if (ret) 766 goto err; 767 err: 768 return; 769 }; 770 771 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev) 772 { 773 struct platform_device *pdev = dev->pdev; 774 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 775 struct dvb_frontend *fe = pdata->dvb_frontend; 776 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 777 struct v4l2_ctrl *bandwidth_auto; 778 struct v4l2_ctrl *bandwidth; 779 780 /* 781 * tuner RF (Hz) 782 */ 783 if (dev->f_tuner == 0) 784 return 0; 785 786 /* 787 * bandwidth (Hz) 788 */ 789 bandwidth_auto = v4l2_ctrl_find(&dev->hdl, 790 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 791 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); 792 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 793 c->bandwidth_hz = dev->f_adc; 794 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc); 795 } else { 796 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth); 797 } 798 799 c->frequency = dev->f_tuner; 800 c->delivery_system = SYS_DVBT; 801 802 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n", 803 c->frequency, c->bandwidth_hz); 804 805 if (!test_bit(POWER_ON, &dev->flags)) 806 return 0; 807 808 if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { 809 if (fe->ops.tuner_ops.set_params) 810 fe->ops.tuner_ops.set_params(fe); 811 } 812 813 return 0; 814 }; 815 816 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev) 817 { 818 struct platform_device *pdev = dev->pdev; 819 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 820 struct dvb_frontend *fe = pdata->dvb_frontend; 821 822 dev_dbg(&pdev->dev, "\n"); 823 824 if (fe->ops.tuner_ops.init) 825 fe->ops.tuner_ops.init(fe); 826 827 return 0; 828 }; 829 830 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev) 831 { 832 struct platform_device *pdev = dev->pdev; 833 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 834 struct dvb_frontend *fe = pdata->dvb_frontend; 835 836 dev_dbg(&pdev->dev, "\n"); 837 838 if (fe->ops.tuner_ops.sleep) 839 fe->ops.tuner_ops.sleep(fe); 840 841 return; 842 }; 843 844 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) 845 { 846 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 847 struct platform_device *pdev = dev->pdev; 848 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 849 struct dvb_usb_device *d = pdata->dvb_usb_device; 850 int ret; 851 852 dev_dbg(&pdev->dev, "\n"); 853 854 if (!dev->udev) 855 return -ENODEV; 856 857 if (mutex_lock_interruptible(&dev->v4l2_lock)) 858 return -ERESTARTSYS; 859 860 if (d->props->power_ctrl) 861 d->props->power_ctrl(d, 1); 862 863 /* enable ADC */ 864 if (d->props->frontend_ctrl) 865 d->props->frontend_ctrl(pdata->dvb_frontend, 1); 866 867 set_bit(POWER_ON, &dev->flags); 868 869 /* wake-up tuner */ 870 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) 871 ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); 872 else 873 ret = rtl2832_sdr_set_tuner(dev); 874 if (ret) 875 goto err; 876 877 ret = rtl2832_sdr_set_tuner_freq(dev); 878 if (ret) 879 goto err; 880 881 ret = rtl2832_sdr_set_adc(dev); 882 if (ret) 883 goto err; 884 885 ret = rtl2832_sdr_alloc_stream_bufs(dev); 886 if (ret) 887 goto err; 888 889 ret = rtl2832_sdr_alloc_urbs(dev); 890 if (ret) 891 goto err; 892 893 dev->sequence = 0; 894 895 ret = rtl2832_sdr_submit_urbs(dev); 896 if (ret) 897 goto err; 898 899 err: 900 mutex_unlock(&dev->v4l2_lock); 901 902 return ret; 903 } 904 905 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) 906 { 907 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 908 struct platform_device *pdev = dev->pdev; 909 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 910 struct dvb_usb_device *d = pdata->dvb_usb_device; 911 912 dev_dbg(&pdev->dev, "\n"); 913 914 mutex_lock(&dev->v4l2_lock); 915 916 rtl2832_sdr_kill_urbs(dev); 917 rtl2832_sdr_free_urbs(dev); 918 rtl2832_sdr_free_stream_bufs(dev); 919 rtl2832_sdr_cleanup_queued_bufs(dev); 920 rtl2832_sdr_unset_adc(dev); 921 922 /* sleep tuner */ 923 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) 924 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); 925 else 926 rtl2832_sdr_unset_tuner(dev); 927 928 clear_bit(POWER_ON, &dev->flags); 929 930 /* disable ADC */ 931 if (d->props->frontend_ctrl) 932 d->props->frontend_ctrl(pdata->dvb_frontend, 0); 933 934 if (d->props->power_ctrl) 935 d->props->power_ctrl(d, 0); 936 937 mutex_unlock(&dev->v4l2_lock); 938 } 939 940 static const struct vb2_ops rtl2832_sdr_vb2_ops = { 941 .queue_setup = rtl2832_sdr_queue_setup, 942 .buf_prepare = rtl2832_sdr_buf_prepare, 943 .buf_queue = rtl2832_sdr_buf_queue, 944 .start_streaming = rtl2832_sdr_start_streaming, 945 .stop_streaming = rtl2832_sdr_stop_streaming, 946 .wait_prepare = vb2_ops_wait_prepare, 947 .wait_finish = vb2_ops_wait_finish, 948 }; 949 950 static int rtl2832_sdr_g_tuner(struct file *file, void *priv, 951 struct v4l2_tuner *v) 952 { 953 struct rtl2832_sdr_dev *dev = video_drvdata(file); 954 struct platform_device *pdev = dev->pdev; 955 int ret; 956 957 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type); 958 959 if (v->index == 0) { 960 strscpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name)); 961 v->type = V4L2_TUNER_ADC; 962 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 963 v->rangelow = 300000; 964 v->rangehigh = 3200000; 965 ret = 0; 966 } else if (v->index == 1 && 967 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) { 968 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); 969 } else if (v->index == 1) { 970 strscpy(v->name, "RF: <unknown>", sizeof(v->name)); 971 v->type = V4L2_TUNER_RF; 972 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 973 v->rangelow = 50000000; 974 v->rangehigh = 2000000000; 975 ret = 0; 976 } else { 977 ret = -EINVAL; 978 } 979 return ret; 980 } 981 982 static int rtl2832_sdr_s_tuner(struct file *file, void *priv, 983 const struct v4l2_tuner *v) 984 { 985 struct rtl2832_sdr_dev *dev = video_drvdata(file); 986 struct platform_device *pdev = dev->pdev; 987 int ret; 988 989 dev_dbg(&pdev->dev, "\n"); 990 991 if (v->index == 0) { 992 ret = 0; 993 } else if (v->index == 1 && 994 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) { 995 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); 996 } else if (v->index == 1) { 997 ret = 0; 998 } else { 999 ret = -EINVAL; 1000 } 1001 return ret; 1002 } 1003 1004 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv, 1005 struct v4l2_frequency_band *band) 1006 { 1007 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1008 struct platform_device *pdev = dev->pdev; 1009 int ret; 1010 1011 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n", 1012 band->tuner, band->type, band->index); 1013 1014 if (band->tuner == 0) { 1015 if (band->index >= ARRAY_SIZE(bands_adc)) 1016 return -EINVAL; 1017 1018 *band = bands_adc[band->index]; 1019 ret = 0; 1020 } else if (band->tuner == 1 && 1021 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) { 1022 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band); 1023 } else if (band->tuner == 1) { 1024 if (band->index >= ARRAY_SIZE(bands_fm)) 1025 return -EINVAL; 1026 1027 *band = bands_fm[band->index]; 1028 ret = 0; 1029 } else { 1030 ret = -EINVAL; 1031 } 1032 return ret; 1033 } 1034 1035 static int rtl2832_sdr_g_frequency(struct file *file, void *priv, 1036 struct v4l2_frequency *f) 1037 { 1038 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1039 struct platform_device *pdev = dev->pdev; 1040 int ret; 1041 1042 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type); 1043 1044 if (f->tuner == 0) { 1045 f->frequency = dev->f_adc; 1046 f->type = V4L2_TUNER_ADC; 1047 ret = 0; 1048 } else if (f->tuner == 1 && 1049 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) { 1050 f->type = V4L2_TUNER_RF; 1051 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); 1052 } else if (f->tuner == 1) { 1053 f->frequency = dev->f_tuner; 1054 f->type = V4L2_TUNER_RF; 1055 ret = 0; 1056 } else { 1057 ret = -EINVAL; 1058 } 1059 return ret; 1060 } 1061 1062 static int rtl2832_sdr_s_frequency(struct file *file, void *priv, 1063 const struct v4l2_frequency *f) 1064 { 1065 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1066 struct platform_device *pdev = dev->pdev; 1067 int ret, band; 1068 1069 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n", 1070 f->tuner, f->type, f->frequency); 1071 1072 /* ADC band midpoints */ 1073 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) 1074 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) 1075 1076 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { 1077 if (f->frequency < BAND_ADC_0) 1078 band = 0; 1079 else if (f->frequency < BAND_ADC_1) 1080 band = 1; 1081 else 1082 band = 2; 1083 1084 dev->f_adc = clamp_t(unsigned int, f->frequency, 1085 bands_adc[band].rangelow, 1086 bands_adc[band].rangehigh); 1087 1088 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc); 1089 ret = rtl2832_sdr_set_adc(dev); 1090 } else if (f->tuner == 1 && 1091 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { 1092 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); 1093 } else if (f->tuner == 1) { 1094 dev->f_tuner = clamp_t(unsigned int, f->frequency, 1095 bands_fm[0].rangelow, 1096 bands_fm[0].rangehigh); 1097 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency); 1098 1099 ret = rtl2832_sdr_set_tuner_freq(dev); 1100 } else { 1101 ret = -EINVAL; 1102 } 1103 return ret; 1104 } 1105 1106 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, 1107 struct v4l2_fmtdesc *f) 1108 { 1109 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1110 struct platform_device *pdev = dev->pdev; 1111 1112 dev_dbg(&pdev->dev, "\n"); 1113 1114 if (f->index >= dev->num_formats) 1115 return -EINVAL; 1116 1117 f->pixelformat = formats[f->index].pixelformat; 1118 1119 return 0; 1120 } 1121 1122 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, 1123 struct v4l2_format *f) 1124 { 1125 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1126 struct platform_device *pdev = dev->pdev; 1127 1128 dev_dbg(&pdev->dev, "\n"); 1129 1130 f->fmt.sdr.pixelformat = dev->pixelformat; 1131 f->fmt.sdr.buffersize = dev->buffersize; 1132 1133 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1134 1135 return 0; 1136 } 1137 1138 static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, 1139 struct v4l2_format *f) 1140 { 1141 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1142 struct platform_device *pdev = dev->pdev; 1143 struct vb2_queue *q = &dev->vb_queue; 1144 int i; 1145 1146 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", 1147 (char *)&f->fmt.sdr.pixelformat); 1148 1149 if (vb2_is_busy(q)) 1150 return -EBUSY; 1151 1152 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 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 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 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(dev->bandwidth->step, 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(offset, 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(&dev->hdl); 1304 v4l2_device_unregister(&dev->v4l2_dev); 1305 kfree(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(pdev->dev.parent->driver->owner)) { 1331 dev_err(&pdev->dev, "Refcount fail"); 1332 ret = -EINVAL; 1333 goto err; 1334 } 1335 dev = kzalloc(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(&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(&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(&dev->hdl, subdev->ctrl_handler, 1380 NULL, 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(&dev->hdl, ops, 1386 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1387 0, 1, 1, 1); 1388 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1389 V4L2_CID_RF_TUNER_BANDWIDTH, 1390 0, 8000000, 100000, 0); 1391 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, 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(&dev->hdl, ops, 1397 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1398 0, 1, 1, 1); 1399 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1400 V4L2_CID_RF_TUNER_BANDWIDTH, 1401 6000000, 8000000, 1000000, 1402 6000000); 1403 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, 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(&dev->hdl, subdev->ctrl_handler, 1409 NULL, true); 1410 break; 1411 default: 1412 v4l2_ctrl_handler_init(&dev->hdl, 0); 1413 dev_err(&pdev->dev, "Unsupported tuner\n"); 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(&dev->vdev, dev); 1427 1428 /* Register the v4l2_device structure */ 1429 dev->v4l2_dev.release = rtl2832_sdr_video_release; 1430 ret = v4l2_device_register(&pdev->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(&dev->vdev, VFL_TYPE_SDR, -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, dev); 1453 return 0; 1454 err_v4l2_device_unregister: 1455 v4l2_device_unregister(&dev->v4l2_dev); 1456 err_v4l2_ctrl_handler_free: 1457 v4l2_ctrl_handler_free(&dev->hdl); 1458 err_kfree: 1459 kfree(dev); 1460 err_module_put: 1461 module_put(pdev->dev.parent->driver->owner); 1462 err: 1463 return ret; 1464 } 1465 1466 static int 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(&dev->v4l2_dev); 1477 video_unregister_device(&dev->vdev); 1478 mutex_unlock(&dev->v4l2_lock); 1479 mutex_unlock(&dev->vb_queue_lock); 1480 v4l2_device_put(&dev->v4l2_dev); 1481 module_put(pdev->dev.parent->driver->owner); 1482 1483 return 0; 1484 } 1485 1486 static struct platform_driver rtl2832_sdr_driver = { 1487 .driver = { 1488 .name = "rtl2832_sdr", 1489 }, 1490 .probe = rtl2832_sdr_probe, 1491 .remove = rtl2832_sdr_remove, 1492 }; 1493 module_platform_driver(rtl2832_sdr_driver); 1494 1495 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1496 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver"); 1497 MODULE_LICENSE("GPL"); 1498