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(&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 "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(&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 dev->urb_list[j] = NULL; 382 } 383 dev->urbs_initialized = 0; 384 return -ENOMEM; 385 } 386 usb_fill_bulk_urb(dev->urb_list[i], 387 dev->udev, 388 usb_rcvbulkpipe(dev->udev, 0x81), 389 dev->buf_list[i], 390 BULK_BUFFER_SIZE, 391 rtl2832_sdr_urb_complete, 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(&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(&buf->list); 416 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 417 } 418 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 419 } 420 421 static int rtl2832_sdr_querycap(struct file *file, void *fh, 422 struct v4l2_capability *cap) 423 { 424 struct rtl2832_sdr_dev *dev = video_drvdata(file); 425 struct platform_device *pdev = dev->pdev; 426 427 dev_dbg(&pdev->dev, "\n"); 428 429 strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); 430 strscpy(cap->card, dev->vdev.name, sizeof(cap->card)); 431 usb_make_path(dev->udev, cap->bus_info, 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(vq); 441 struct platform_device *pdev = dev->pdev; 442 unsigned int q_num_bufs = vb2_get_num_buffers(vq); 443 444 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers); 445 446 /* Need at least 8 buffers */ 447 if (q_num_bufs + *nbuffers < 8) 448 *nbuffers = 8 - q_num_bufs; 449 *nplanes = 1; 450 sizes[0] = PAGE_ALIGN(dev->buffersize); 451 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); 452 return 0; 453 } 454 455 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) 456 { 457 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 458 459 /* Don't allow queueing new buffers after device disconnection */ 460 if (!dev->udev) 461 return -ENODEV; 462 463 return 0; 464 } 465 466 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) 467 { 468 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 469 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 470 struct rtl2832_sdr_frame_buf *buf = 471 container_of(vbuf, struct rtl2832_sdr_frame_buf, vb); 472 unsigned long flags; 473 474 /* Check the device has not disconnected between prep and queuing */ 475 if (!dev->udev) { 476 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 477 return; 478 } 479 480 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 481 list_add_tail(&buf->list, &dev->queued_bufs); 482 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 483 } 484 485 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev) 486 { 487 struct platform_device *pdev = dev->pdev; 488 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 489 struct dvb_frontend *fe = pdata->dvb_frontend; 490 int ret; 491 unsigned int f_sr, f_if; 492 u8 buf[4], u8tmp1, u8tmp2; 493 u64 u64tmp; 494 u32 u32tmp; 495 496 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc); 497 498 if (!test_bit(POWER_ON, &dev->flags)) 499 return 0; 500 501 if (dev->f_adc == 0) 502 return 0; 503 504 f_sr = dev->f_adc; 505 506 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x00\x00", 2); 507 if (ret) 508 goto err; 509 510 ret = regmap_bulk_write(dev->regmap, 0x115, "\x00\x00\x00\x00", 4); 511 if (ret) 512 goto err; 513 514 /* get IF from tuner */ 515 if (fe->ops.tuner_ops.get_if_frequency) 516 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); 517 else 518 ret = -EINVAL; 519 520 if (ret) 521 goto err; 522 523 /* program IF */ 524 u64tmp = f_if % pdata->clk; 525 u64tmp *= 0x400000; 526 u64tmp = div_u64(u64tmp, pdata->clk); 527 u64tmp = -u64tmp; 528 u32tmp = u64tmp & 0x3fffff; 529 530 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp); 531 532 buf[0] = (u32tmp >> 16) & 0xff; 533 buf[1] = (u32tmp >> 8) & 0xff; 534 buf[2] = (u32tmp >> 0) & 0xff; 535 536 ret = regmap_bulk_write(dev->regmap, 0x119, buf, 3); 537 if (ret) 538 goto err; 539 540 /* BB / IF mode */ 541 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ 542 if (f_if) { 543 u8tmp1 = 0x1a; /* disable Zero-IF */ 544 u8tmp2 = 0x8d; /* enable ADC I */ 545 } else { 546 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ 547 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ 548 } 549 550 ret = regmap_write(dev->regmap, 0x1b1, u8tmp1); 551 if (ret) 552 goto err; 553 554 ret = regmap_write(dev->regmap, 0x008, u8tmp2); 555 if (ret) 556 goto err; 557 558 ret = regmap_write(dev->regmap, 0x006, 0x80); 559 if (ret) 560 goto err; 561 562 /* program sampling rate (resampling down) */ 563 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U); 564 u32tmp <<= 2; 565 buf[0] = (u32tmp >> 24) & 0xff; 566 buf[1] = (u32tmp >> 16) & 0xff; 567 buf[2] = (u32tmp >> 8) & 0xff; 568 buf[3] = (u32tmp >> 0) & 0xff; 569 ret = regmap_bulk_write(dev->regmap, 0x19f, buf, 4); 570 if (ret) 571 goto err; 572 573 /* low-pass filter */ 574 ret = regmap_bulk_write(dev->regmap, 0x11c, 575 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5", 576 20); 577 if (ret) 578 goto err; 579 580 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 581 if (ret) 582 goto err; 583 584 /* mode */ 585 ret = regmap_write(dev->regmap, 0x019, 0x05); 586 if (ret) 587 goto err; 588 589 ret = regmap_bulk_write(dev->regmap, 0x01a, 590 "\x1b\x16\x0d\x06\x01\xff", 6); 591 if (ret) 592 goto err; 593 594 /* FSM */ 595 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\xf0\x0f", 3); 596 if (ret) 597 goto err; 598 599 /* PID filter */ 600 ret = regmap_write(dev->regmap, 0x061, 0x60); 601 if (ret) 602 goto err; 603 604 /* used RF tuner based settings */ 605 switch (pdata->tuner) { 606 case RTL2832_SDR_TUNER_E4000: 607 ret = regmap_write(dev->regmap, 0x112, 0x5a); 608 ret = regmap_write(dev->regmap, 0x102, 0x40); 609 ret = regmap_write(dev->regmap, 0x103, 0x5a); 610 ret = regmap_write(dev->regmap, 0x1c7, 0x30); 611 ret = regmap_write(dev->regmap, 0x104, 0xd0); 612 ret = regmap_write(dev->regmap, 0x105, 0xbe); 613 ret = regmap_write(dev->regmap, 0x1c8, 0x18); 614 ret = regmap_write(dev->regmap, 0x106, 0x35); 615 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 616 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 617 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 618 ret = regmap_write(dev->regmap, 0x107, 0x40); 619 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 620 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 621 ret = regmap_write(dev->regmap, 0x108, 0x80); 622 ret = regmap_write(dev->regmap, 0x109, 0x7f); 623 ret = regmap_write(dev->regmap, 0x10a, 0x80); 624 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 625 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 626 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 627 ret = regmap_write(dev->regmap, 0x011, 0xd4); 628 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 629 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 630 ret = regmap_write(dev->regmap, 0x1db, 0x00); 631 ret = regmap_write(dev->regmap, 0x1dd, 0x14); 632 ret = regmap_write(dev->regmap, 0x1de, 0xec); 633 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 634 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 635 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 636 ret = regmap_write(dev->regmap, 0x00d, 0x83); 637 ret = regmap_write(dev->regmap, 0x010, 0x49); 638 ret = regmap_write(dev->regmap, 0x00d, 0x87); 639 ret = regmap_write(dev->regmap, 0x00d, 0x85); 640 ret = regmap_write(dev->regmap, 0x013, 0x02); 641 break; 642 case RTL2832_SDR_TUNER_FC0012: 643 case RTL2832_SDR_TUNER_FC0013: 644 ret = regmap_write(dev->regmap, 0x112, 0x5a); 645 ret = regmap_write(dev->regmap, 0x102, 0x40); 646 ret = regmap_write(dev->regmap, 0x103, 0x5a); 647 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 648 ret = regmap_write(dev->regmap, 0x104, 0xcc); 649 ret = regmap_write(dev->regmap, 0x105, 0xbe); 650 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 651 ret = regmap_write(dev->regmap, 0x106, 0x35); 652 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 653 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 654 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 655 ret = regmap_write(dev->regmap, 0x107, 0x40); 656 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 657 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 658 ret = regmap_write(dev->regmap, 0x108, 0x80); 659 ret = regmap_write(dev->regmap, 0x109, 0x7f); 660 ret = regmap_write(dev->regmap, 0x10a, 0x80); 661 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 662 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 663 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 664 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xbf", 2); 665 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 666 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 667 ret = regmap_write(dev->regmap, 0x1db, 0x00); 668 ret = regmap_write(dev->regmap, 0x1dd, 0x11); 669 ret = regmap_write(dev->regmap, 0x1de, 0xef); 670 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 671 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 672 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 673 break; 674 case RTL2832_SDR_TUNER_R820T: 675 case RTL2832_SDR_TUNER_R828D: 676 ret = regmap_write(dev->regmap, 0x112, 0x5a); 677 ret = regmap_write(dev->regmap, 0x102, 0x40); 678 ret = regmap_write(dev->regmap, 0x115, 0x01); 679 ret = regmap_write(dev->regmap, 0x103, 0x80); 680 ret = regmap_write(dev->regmap, 0x1c7, 0x24); 681 ret = regmap_write(dev->regmap, 0x104, 0xcc); 682 ret = regmap_write(dev->regmap, 0x105, 0xbe); 683 ret = regmap_write(dev->regmap, 0x1c8, 0x14); 684 ret = regmap_write(dev->regmap, 0x106, 0x35); 685 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 686 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 687 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 688 ret = regmap_write(dev->regmap, 0x107, 0x40); 689 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 690 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 691 ret = regmap_write(dev->regmap, 0x108, 0x80); 692 ret = regmap_write(dev->regmap, 0x109, 0x7f); 693 ret = regmap_write(dev->regmap, 0x10a, 0x80); 694 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 695 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 696 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 697 ret = regmap_write(dev->regmap, 0x011, 0xf4); 698 break; 699 case RTL2832_SDR_TUNER_FC2580: 700 ret = regmap_write(dev->regmap, 0x112, 0x39); 701 ret = regmap_write(dev->regmap, 0x102, 0x40); 702 ret = regmap_write(dev->regmap, 0x103, 0x5a); 703 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 704 ret = regmap_write(dev->regmap, 0x104, 0xcc); 705 ret = regmap_write(dev->regmap, 0x105, 0xbe); 706 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 707 ret = regmap_write(dev->regmap, 0x106, 0x35); 708 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 709 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 710 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 711 ret = regmap_write(dev->regmap, 0x107, 0x40); 712 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 713 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 714 ret = regmap_write(dev->regmap, 0x108, 0x80); 715 ret = regmap_write(dev->regmap, 0x109, 0x7f); 716 ret = regmap_write(dev->regmap, 0x10a, 0x9c); 717 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 718 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 719 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 720 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xf4", 2); 721 break; 722 default: 723 dev_notice(&pdev->dev, "Unsupported tuner\n"); 724 } 725 726 /* software reset */ 727 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x04); 728 if (ret) 729 goto err; 730 731 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x00); 732 if (ret) 733 goto err; 734 err: 735 return ret; 736 }; 737 738 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev) 739 { 740 struct platform_device *pdev = dev->pdev; 741 int ret; 742 743 dev_dbg(&pdev->dev, "\n"); 744 745 /* PID filter */ 746 ret = regmap_write(dev->regmap, 0x061, 0xe0); 747 if (ret) 748 goto err; 749 750 /* mode */ 751 ret = regmap_write(dev->regmap, 0x019, 0x20); 752 if (ret) 753 goto err; 754 755 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 756 if (ret) 757 goto err; 758 759 /* FSM */ 760 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3); 761 if (ret) 762 goto err; 763 764 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x40\x00", 2); 765 if (ret) 766 goto err; 767 768 ret = regmap_bulk_write(dev->regmap, 0x115, "\x06\x3f\xce\xcc", 4); 769 if (ret) 770 goto err; 771 err: 772 return; 773 }; 774 775 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev) 776 { 777 struct platform_device *pdev = dev->pdev; 778 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 779 struct dvb_frontend *fe = pdata->dvb_frontend; 780 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 781 struct v4l2_ctrl *bandwidth_auto; 782 struct v4l2_ctrl *bandwidth; 783 784 /* 785 * tuner RF (Hz) 786 */ 787 if (dev->f_tuner == 0) 788 return 0; 789 790 /* 791 * bandwidth (Hz) 792 */ 793 bandwidth_auto = v4l2_ctrl_find(&dev->hdl, 794 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 795 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); 796 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 797 c->bandwidth_hz = dev->f_adc; 798 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc); 799 } else { 800 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth); 801 } 802 803 c->frequency = dev->f_tuner; 804 c->delivery_system = SYS_DVBT; 805 806 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n", 807 c->frequency, c->bandwidth_hz); 808 809 if (!test_bit(POWER_ON, &dev->flags)) 810 return 0; 811 812 if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { 813 if (fe->ops.tuner_ops.set_params) 814 fe->ops.tuner_ops.set_params(fe); 815 } 816 817 return 0; 818 }; 819 820 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev) 821 { 822 struct platform_device *pdev = dev->pdev; 823 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 824 struct dvb_frontend *fe = pdata->dvb_frontend; 825 826 dev_dbg(&pdev->dev, "\n"); 827 828 if (fe->ops.tuner_ops.init) 829 fe->ops.tuner_ops.init(fe); 830 831 return 0; 832 }; 833 834 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev) 835 { 836 struct platform_device *pdev = dev->pdev; 837 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 838 struct dvb_frontend *fe = pdata->dvb_frontend; 839 840 dev_dbg(&pdev->dev, "\n"); 841 842 if (fe->ops.tuner_ops.sleep) 843 fe->ops.tuner_ops.sleep(fe); 844 845 return; 846 }; 847 848 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) 849 { 850 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 851 struct platform_device *pdev = dev->pdev; 852 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 853 struct dvb_usb_device *d = pdata->dvb_usb_device; 854 int ret; 855 856 dev_dbg(&pdev->dev, "\n"); 857 858 if (!dev->udev) 859 return -ENODEV; 860 861 if (mutex_lock_interruptible(&dev->v4l2_lock)) 862 return -ERESTARTSYS; 863 864 if (d->props->power_ctrl) 865 d->props->power_ctrl(d, 1); 866 867 /* enable ADC */ 868 if (d->props->frontend_ctrl) 869 d->props->frontend_ctrl(pdata->dvb_frontend, 1); 870 871 set_bit(POWER_ON, &dev->flags); 872 873 /* wake-up tuner */ 874 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) 875 ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); 876 else 877 ret = rtl2832_sdr_set_tuner(dev); 878 if (ret) 879 goto err; 880 881 ret = rtl2832_sdr_set_tuner_freq(dev); 882 if (ret) 883 goto err; 884 885 ret = rtl2832_sdr_set_adc(dev); 886 if (ret) 887 goto err; 888 889 ret = rtl2832_sdr_alloc_stream_bufs(dev); 890 if (ret) 891 goto err; 892 893 ret = rtl2832_sdr_alloc_urbs(dev); 894 if (ret) 895 goto err; 896 897 dev->sequence = 0; 898 899 ret = rtl2832_sdr_submit_urbs(dev); 900 if (ret) 901 goto err; 902 903 err: 904 mutex_unlock(&dev->v4l2_lock); 905 906 return ret; 907 } 908 909 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) 910 { 911 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 912 struct platform_device *pdev = dev->pdev; 913 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 914 struct dvb_usb_device *d = pdata->dvb_usb_device; 915 916 dev_dbg(&pdev->dev, "\n"); 917 918 mutex_lock(&dev->v4l2_lock); 919 920 rtl2832_sdr_kill_urbs(dev); 921 rtl2832_sdr_free_urbs(dev); 922 rtl2832_sdr_free_stream_bufs(dev); 923 rtl2832_sdr_cleanup_queued_bufs(dev); 924 rtl2832_sdr_unset_adc(dev); 925 926 /* sleep tuner */ 927 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) 928 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); 929 else 930 rtl2832_sdr_unset_tuner(dev); 931 932 clear_bit(POWER_ON, &dev->flags); 933 934 /* disable ADC */ 935 if (d->props->frontend_ctrl) 936 d->props->frontend_ctrl(pdata->dvb_frontend, 0); 937 938 if (d->props->power_ctrl) 939 d->props->power_ctrl(d, 0); 940 941 mutex_unlock(&dev->v4l2_lock); 942 } 943 944 static const struct vb2_ops rtl2832_sdr_vb2_ops = { 945 .queue_setup = rtl2832_sdr_queue_setup, 946 .buf_prepare = rtl2832_sdr_buf_prepare, 947 .buf_queue = rtl2832_sdr_buf_queue, 948 .start_streaming = rtl2832_sdr_start_streaming, 949 .stop_streaming = rtl2832_sdr_stop_streaming, 950 }; 951 952 static int rtl2832_sdr_g_tuner(struct file *file, void *priv, 953 struct v4l2_tuner *v) 954 { 955 struct rtl2832_sdr_dev *dev = video_drvdata(file); 956 struct platform_device *pdev = dev->pdev; 957 int ret; 958 959 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type); 960 961 if (v->index == 0) { 962 strscpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name)); 963 v->type = V4L2_TUNER_ADC; 964 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 965 v->rangelow = 300000; 966 v->rangehigh = 3200000; 967 ret = 0; 968 } else if (v->index == 1 && 969 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) { 970 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); 971 } else if (v->index == 1) { 972 strscpy(v->name, "RF: <unknown>", sizeof(v->name)); 973 v->type = V4L2_TUNER_RF; 974 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 975 v->rangelow = 50000000; 976 v->rangehigh = 2000000000; 977 ret = 0; 978 } else { 979 ret = -EINVAL; 980 } 981 return ret; 982 } 983 984 static int rtl2832_sdr_s_tuner(struct file *file, void *priv, 985 const struct v4l2_tuner *v) 986 { 987 struct rtl2832_sdr_dev *dev = video_drvdata(file); 988 struct platform_device *pdev = dev->pdev; 989 int ret; 990 991 dev_dbg(&pdev->dev, "\n"); 992 993 if (v->index == 0) { 994 ret = 0; 995 } else if (v->index == 1 && 996 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) { 997 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); 998 } else if (v->index == 1) { 999 ret = 0; 1000 } else { 1001 ret = -EINVAL; 1002 } 1003 return ret; 1004 } 1005 1006 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv, 1007 struct v4l2_frequency_band *band) 1008 { 1009 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1010 struct platform_device *pdev = dev->pdev; 1011 int ret; 1012 1013 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n", 1014 band->tuner, band->type, band->index); 1015 1016 if (band->tuner == 0) { 1017 if (band->index >= ARRAY_SIZE(bands_adc)) 1018 return -EINVAL; 1019 1020 *band = bands_adc[band->index]; 1021 ret = 0; 1022 } else if (band->tuner == 1 && 1023 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) { 1024 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band); 1025 } else if (band->tuner == 1) { 1026 if (band->index >= ARRAY_SIZE(bands_fm)) 1027 return -EINVAL; 1028 1029 *band = bands_fm[band->index]; 1030 ret = 0; 1031 } else { 1032 ret = -EINVAL; 1033 } 1034 return ret; 1035 } 1036 1037 static int rtl2832_sdr_g_frequency(struct file *file, void *priv, 1038 struct v4l2_frequency *f) 1039 { 1040 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1041 struct platform_device *pdev = dev->pdev; 1042 int ret; 1043 1044 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type); 1045 1046 if (f->tuner == 0) { 1047 f->frequency = dev->f_adc; 1048 f->type = V4L2_TUNER_ADC; 1049 ret = 0; 1050 } else if (f->tuner == 1 && 1051 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) { 1052 f->type = V4L2_TUNER_RF; 1053 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); 1054 } else if (f->tuner == 1) { 1055 f->frequency = dev->f_tuner; 1056 f->type = V4L2_TUNER_RF; 1057 ret = 0; 1058 } else { 1059 ret = -EINVAL; 1060 } 1061 return ret; 1062 } 1063 1064 static int rtl2832_sdr_s_frequency(struct file *file, void *priv, 1065 const struct v4l2_frequency *f) 1066 { 1067 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1068 struct platform_device *pdev = dev->pdev; 1069 int ret, band; 1070 1071 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n", 1072 f->tuner, f->type, f->frequency); 1073 1074 /* ADC band midpoints */ 1075 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) 1076 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) 1077 1078 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { 1079 if (f->frequency < BAND_ADC_0) 1080 band = 0; 1081 else if (f->frequency < BAND_ADC_1) 1082 band = 1; 1083 else 1084 band = 2; 1085 1086 dev->f_adc = clamp_t(unsigned int, f->frequency, 1087 bands_adc[band].rangelow, 1088 bands_adc[band].rangehigh); 1089 1090 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc); 1091 ret = rtl2832_sdr_set_adc(dev); 1092 } else if (f->tuner == 1 && 1093 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { 1094 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); 1095 } else if (f->tuner == 1) { 1096 dev->f_tuner = clamp_t(unsigned int, f->frequency, 1097 bands_fm[0].rangelow, 1098 bands_fm[0].rangehigh); 1099 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency); 1100 1101 ret = rtl2832_sdr_set_tuner_freq(dev); 1102 } else { 1103 ret = -EINVAL; 1104 } 1105 return ret; 1106 } 1107 1108 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, 1109 struct v4l2_fmtdesc *f) 1110 { 1111 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1112 struct platform_device *pdev = dev->pdev; 1113 1114 dev_dbg(&pdev->dev, "\n"); 1115 1116 if (f->index >= dev->num_formats) 1117 return -EINVAL; 1118 1119 f->pixelformat = formats[f->index].pixelformat; 1120 1121 return 0; 1122 } 1123 1124 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, 1125 struct v4l2_format *f) 1126 { 1127 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1128 struct platform_device *pdev = dev->pdev; 1129 1130 dev_dbg(&pdev->dev, "\n"); 1131 1132 f->fmt.sdr.pixelformat = dev->pixelformat; 1133 f->fmt.sdr.buffersize = dev->buffersize; 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 for (i = 0; i < dev->num_formats; i++) { 1153 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1154 dev->pixelformat = formats[i].pixelformat; 1155 dev->buffersize = formats[i].buffersize; 1156 f->fmt.sdr.buffersize = formats[i].buffersize; 1157 return 0; 1158 } 1159 } 1160 1161 dev->pixelformat = formats[0].pixelformat; 1162 dev->buffersize = formats[0].buffersize; 1163 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1164 f->fmt.sdr.buffersize = formats[0].buffersize; 1165 1166 return 0; 1167 } 1168 1169 static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, 1170 struct v4l2_format *f) 1171 { 1172 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1173 struct platform_device *pdev = dev->pdev; 1174 int i; 1175 1176 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", 1177 (char *)&f->fmt.sdr.pixelformat); 1178 1179 for (i = 0; i < dev->num_formats; i++) { 1180 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1181 f->fmt.sdr.buffersize = formats[i].buffersize; 1182 return 0; 1183 } 1184 } 1185 1186 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1187 f->fmt.sdr.buffersize = formats[0].buffersize; 1188 1189 return 0; 1190 } 1191 1192 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = { 1193 .vidioc_querycap = rtl2832_sdr_querycap, 1194 1195 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap, 1196 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap, 1197 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap, 1198 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap, 1199 1200 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1201 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1202 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1203 .vidioc_querybuf = vb2_ioctl_querybuf, 1204 .vidioc_qbuf = vb2_ioctl_qbuf, 1205 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1206 1207 .vidioc_streamon = vb2_ioctl_streamon, 1208 .vidioc_streamoff = vb2_ioctl_streamoff, 1209 1210 .vidioc_g_tuner = rtl2832_sdr_g_tuner, 1211 .vidioc_s_tuner = rtl2832_sdr_s_tuner, 1212 1213 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands, 1214 .vidioc_g_frequency = rtl2832_sdr_g_frequency, 1215 .vidioc_s_frequency = rtl2832_sdr_s_frequency, 1216 1217 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1218 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1219 .vidioc_log_status = v4l2_ctrl_log_status, 1220 }; 1221 1222 static const struct v4l2_file_operations rtl2832_sdr_fops = { 1223 .owner = THIS_MODULE, 1224 .open = v4l2_fh_open, 1225 .release = vb2_fop_release, 1226 .read = vb2_fop_read, 1227 .poll = vb2_fop_poll, 1228 .mmap = vb2_fop_mmap, 1229 .unlocked_ioctl = video_ioctl2, 1230 }; 1231 1232 static struct video_device rtl2832_sdr_template = { 1233 .name = "Realtek RTL2832 SDR", 1234 .release = video_device_release_empty, 1235 .fops = &rtl2832_sdr_fops, 1236 .ioctl_ops = &rtl2832_sdr_ioctl_ops, 1237 .device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | 1238 V4L2_CAP_READWRITE | V4L2_CAP_TUNER, 1239 }; 1240 1241 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl) 1242 { 1243 struct rtl2832_sdr_dev *dev = 1244 container_of(ctrl->handler, struct rtl2832_sdr_dev, 1245 hdl); 1246 struct platform_device *pdev = dev->pdev; 1247 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 1248 struct dvb_frontend *fe = pdata->dvb_frontend; 1249 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 1250 int ret; 1251 1252 dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n", 1253 ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum, 1254 ctrl->step); 1255 1256 switch (ctrl->id) { 1257 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: 1258 case V4L2_CID_RF_TUNER_BANDWIDTH: 1259 /* TODO: these controls should be moved to tuner drivers */ 1260 if (dev->bandwidth_auto->val) { 1261 /* Round towards the closest legal value */ 1262 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2); 1263 u32 offset; 1264 1265 val = clamp_t(s32, val, dev->bandwidth->minimum, 1266 dev->bandwidth->maximum); 1267 offset = val - dev->bandwidth->minimum; 1268 offset = dev->bandwidth->step * 1269 div_u64(offset, dev->bandwidth->step); 1270 dev->bandwidth->val = dev->bandwidth->minimum + offset; 1271 } 1272 c->bandwidth_hz = dev->bandwidth->val; 1273 1274 if (!test_bit(POWER_ON, &dev->flags)) 1275 return 0; 1276 1277 if (fe->ops.tuner_ops.set_params) 1278 ret = fe->ops.tuner_ops.set_params(fe); 1279 else 1280 ret = 0; 1281 break; 1282 default: 1283 ret = -EINVAL; 1284 } 1285 1286 return ret; 1287 } 1288 1289 static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { 1290 .s_ctrl = rtl2832_sdr_s_ctrl, 1291 }; 1292 1293 static void rtl2832_sdr_video_release(struct v4l2_device *v) 1294 { 1295 struct rtl2832_sdr_dev *dev = 1296 container_of(v, struct rtl2832_sdr_dev, v4l2_dev); 1297 struct platform_device *pdev = dev->pdev; 1298 1299 dev_dbg(&pdev->dev, "\n"); 1300 1301 v4l2_ctrl_handler_free(&dev->hdl); 1302 v4l2_device_unregister(&dev->v4l2_dev); 1303 kfree(dev); 1304 } 1305 1306 /* Platform driver interface */ 1307 static int rtl2832_sdr_probe(struct platform_device *pdev) 1308 { 1309 struct rtl2832_sdr_dev *dev; 1310 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 1311 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops; 1312 struct v4l2_subdev *subdev; 1313 int ret; 1314 1315 dev_dbg(&pdev->dev, "\n"); 1316 1317 if (!pdata) { 1318 dev_err(&pdev->dev, "Cannot proceed without platform data\n"); 1319 ret = -EINVAL; 1320 goto err; 1321 } 1322 if (!pdev->dev.parent->driver) { 1323 dev_dbg(&pdev->dev, "No parent device\n"); 1324 ret = -EINVAL; 1325 goto err; 1326 } 1327 /* try to refcount host drv since we are the consumer */ 1328 if (!try_module_get(pdev->dev.parent->driver->owner)) { 1329 dev_err(&pdev->dev, "Refcount fail"); 1330 ret = -EINVAL; 1331 goto err; 1332 } 1333 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1334 if (dev == NULL) { 1335 ret = -ENOMEM; 1336 goto err_module_put; 1337 } 1338 1339 /* setup the state */ 1340 subdev = pdata->v4l2_subdev; 1341 dev->v4l2_subdev = pdata->v4l2_subdev; 1342 dev->pdev = pdev; 1343 dev->regmap = pdata->regmap; 1344 dev->udev = pdata->dvb_usb_device->udev; 1345 dev->f_adc = bands_adc[0].rangelow; 1346 dev->f_tuner = bands_fm[0].rangelow; 1347 dev->pixelformat = formats[0].pixelformat; 1348 dev->buffersize = formats[0].buffersize; 1349 dev->num_formats = NUM_FORMATS; 1350 if (!rtl2832_sdr_emulated_fmt) 1351 dev->num_formats -= 1; 1352 1353 mutex_init(&dev->v4l2_lock); 1354 mutex_init(&dev->vb_queue_lock); 1355 spin_lock_init(&dev->queued_bufs_lock); 1356 INIT_LIST_HEAD(&dev->queued_bufs); 1357 1358 /* Init videobuf2 queue structure */ 1359 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; 1360 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 1361 dev->vb_queue.drv_priv = dev; 1362 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf); 1363 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops; 1364 dev->vb_queue.mem_ops = &vb2_vmalloc_memops; 1365 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1366 ret = vb2_queue_init(&dev->vb_queue); 1367 if (ret) { 1368 dev_err(&pdev->dev, "Could not initialize vb2 queue\n"); 1369 goto err_kfree; 1370 } 1371 1372 /* Register controls */ 1373 switch (pdata->tuner) { 1374 case RTL2832_SDR_TUNER_E4000: 1375 v4l2_ctrl_handler_init(&dev->hdl, 9); 1376 if (subdev) 1377 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, 1378 NULL, true); 1379 break; 1380 case RTL2832_SDR_TUNER_R820T: 1381 case RTL2832_SDR_TUNER_R828D: 1382 v4l2_ctrl_handler_init(&dev->hdl, 2); 1383 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, 1384 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1385 0, 1, 1, 1); 1386 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1387 V4L2_CID_RF_TUNER_BANDWIDTH, 1388 0, 8000000, 100000, 0); 1389 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); 1390 break; 1391 case RTL2832_SDR_TUNER_FC0012: 1392 case RTL2832_SDR_TUNER_FC0013: 1393 v4l2_ctrl_handler_init(&dev->hdl, 2); 1394 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, 1395 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1396 0, 1, 1, 1); 1397 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1398 V4L2_CID_RF_TUNER_BANDWIDTH, 1399 6000000, 8000000, 1000000, 1400 6000000); 1401 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); 1402 break; 1403 case RTL2832_SDR_TUNER_FC2580: 1404 v4l2_ctrl_handler_init(&dev->hdl, 2); 1405 if (subdev) 1406 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, 1407 NULL, true); 1408 break; 1409 default: 1410 v4l2_ctrl_handler_init(&dev->hdl, 0); 1411 dev_err(&pdev->dev, "Unsupported tuner\n"); 1412 ret = -ENODEV; 1413 goto err_v4l2_ctrl_handler_free; 1414 } 1415 if (dev->hdl.error) { 1416 ret = dev->hdl.error; 1417 dev_err(&pdev->dev, "Could not initialize controls\n"); 1418 goto err_v4l2_ctrl_handler_free; 1419 } 1420 1421 /* Init video_device structure */ 1422 dev->vdev = rtl2832_sdr_template; 1423 dev->vdev.queue = &dev->vb_queue; 1424 dev->vdev.queue->lock = &dev->vb_queue_lock; 1425 video_set_drvdata(&dev->vdev, dev); 1426 1427 /* Register the v4l2_device structure */ 1428 dev->v4l2_dev.release = rtl2832_sdr_video_release; 1429 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 1430 if (ret) { 1431 dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret); 1432 goto err_v4l2_ctrl_handler_free; 1433 } 1434 1435 dev->v4l2_dev.ctrl_handler = &dev->hdl; 1436 dev->vdev.v4l2_dev = &dev->v4l2_dev; 1437 dev->vdev.lock = &dev->v4l2_lock; 1438 dev->vdev.vfl_dir = VFL_DIR_RX; 1439 1440 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1); 1441 if (ret) { 1442 dev_err(&pdev->dev, "Failed to register as video device %d\n", 1443 ret); 1444 goto err_v4l2_device_unregister; 1445 } 1446 dev_info(&pdev->dev, "Registered as %s\n", 1447 video_device_node_name(&dev->vdev)); 1448 dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n"); 1449 dev_notice(&pdev->dev, 1450 "SDR API is still slightly experimental and functionality changes may follow\n"); 1451 platform_set_drvdata(pdev, dev); 1452 return 0; 1453 err_v4l2_device_unregister: 1454 v4l2_device_unregister(&dev->v4l2_dev); 1455 err_v4l2_ctrl_handler_free: 1456 v4l2_ctrl_handler_free(&dev->hdl); 1457 err_kfree: 1458 kfree(dev); 1459 err_module_put: 1460 module_put(pdev->dev.parent->driver->owner); 1461 err: 1462 return ret; 1463 } 1464 1465 static void rtl2832_sdr_remove(struct platform_device *pdev) 1466 { 1467 struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev); 1468 1469 dev_dbg(&pdev->dev, "\n"); 1470 1471 mutex_lock(&dev->vb_queue_lock); 1472 mutex_lock(&dev->v4l2_lock); 1473 /* No need to keep the urbs around after disconnection */ 1474 dev->udev = NULL; 1475 v4l2_device_disconnect(&dev->v4l2_dev); 1476 video_unregister_device(&dev->vdev); 1477 mutex_unlock(&dev->v4l2_lock); 1478 mutex_unlock(&dev->vb_queue_lock); 1479 v4l2_device_put(&dev->v4l2_dev); 1480 module_put(pdev->dev.parent->driver->owner); 1481 } 1482 1483 static struct platform_driver rtl2832_sdr_driver = { 1484 .driver = { 1485 .name = "rtl2832_sdr", 1486 }, 1487 .probe = rtl2832_sdr_probe, 1488 .remove = rtl2832_sdr_remove, 1489 }; 1490 module_platform_driver(rtl2832_sdr_driver); 1491 1492 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1493 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver"); 1494 MODULE_LICENSE("GPL"); 1495