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 26static bool rtl2832_sdr_emulated_fmt; 27module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644); 28MODULE_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 37static 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 64static 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 */ 76struct rtl2832_sdr_format { 77 char *name; 78 u32 pixelformat; 79 u32 buffersize; 80}; 81 82static 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 92static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); 93 94/* intermediate buffers with raw data from the USB device */ 95struct 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 101struct 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 */ 153static 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); 166leave: 167 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 168 return buf; 169} 170 171static 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 */ 217static 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 } 262skip: 263 usb_submit_urb(urb, GFP_ATOMIC); 264} 265 266static 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 281static 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 302static 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 320static 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 350static 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 369static 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 */ 402static 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 421static 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 */ 436static 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; 442 443 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 454static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) 455{ 456 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(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 465static 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(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(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 476 return; 477 } 478 479 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 480 list_add_tail(&buf->list, &dev->queued_bufs); 481 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 482} 483 484static 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(dev->regmap, 0x13e, "\x00\x00", 2); 506 if (ret) 507 goto err; 508 509 ret = regmap_bulk_write(dev->regmap, 0x115, "\x00\x00\x00\x00", 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(u64tmp, 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(dev->regmap, 0x119, buf, 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(dev->regmap, 0x1b1, u8tmp1); 550 if (ret) 551 goto err; 552 553 ret = regmap_write(dev->regmap, 0x008, u8tmp2); 554 if (ret) 555 goto err; 556 557 ret = regmap_write(dev->regmap, 0x006, 0x80); 558 if (ret) 559 goto err; 560 561 /* program sampling rate (resampling down) */ 562 u32tmp = div_u64(pdata->clk * 0x400000ULL, 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(dev->regmap, 0x19f, buf, 4); 569 if (ret) 570 goto err; 571 572 /* low-pass filter */ 573 ret = regmap_bulk_write(dev->regmap, 0x11c, 574 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5", 575 20); 576 if (ret) 577 goto err; 578 579 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 580 if (ret) 581 goto err; 582 583 /* mode */ 584 ret = regmap_write(dev->regmap, 0x019, 0x05); 585 if (ret) 586 goto err; 587 588 ret = regmap_bulk_write(dev->regmap, 0x01a, 589 "\x1b\x16\x0d\x06\x01\xff", 6); 590 if (ret) 591 goto err; 592 593 /* FSM */ 594 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\xf0\x0f", 3); 595 if (ret) 596 goto err; 597 598 /* PID filter */ 599 ret = regmap_write(dev->regmap, 0x061, 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(dev->regmap, 0x112, 0x5a); 607 ret = regmap_write(dev->regmap, 0x102, 0x40); 608 ret = regmap_write(dev->regmap, 0x103, 0x5a); 609 ret = regmap_write(dev->regmap, 0x1c7, 0x30); 610 ret = regmap_write(dev->regmap, 0x104, 0xd0); 611 ret = regmap_write(dev->regmap, 0x105, 0xbe); 612 ret = regmap_write(dev->regmap, 0x1c8, 0x18); 613 ret = regmap_write(dev->regmap, 0x106, 0x35); 614 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 615 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 616 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 617 ret = regmap_write(dev->regmap, 0x107, 0x40); 618 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 619 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 620 ret = regmap_write(dev->regmap, 0x108, 0x80); 621 ret = regmap_write(dev->regmap, 0x109, 0x7f); 622 ret = regmap_write(dev->regmap, 0x10a, 0x80); 623 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 624 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 625 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 626 ret = regmap_write(dev->regmap, 0x011, 0xd4); 627 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 628 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 629 ret = regmap_write(dev->regmap, 0x1db, 0x00); 630 ret = regmap_write(dev->regmap, 0x1dd, 0x14); 631 ret = regmap_write(dev->regmap, 0x1de, 0xec); 632 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 633 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 634 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 635 ret = regmap_write(dev->regmap, 0x00d, 0x83); 636 ret = regmap_write(dev->regmap, 0x010, 0x49); 637 ret = regmap_write(dev->regmap, 0x00d, 0x87); 638 ret = regmap_write(dev->regmap, 0x00d, 0x85); 639 ret = regmap_write(dev->regmap, 0x013, 0x02); 640 break; 641 case RTL2832_SDR_TUNER_FC0012: 642 case RTL2832_SDR_TUNER_FC0013: 643 ret = regmap_write(dev->regmap, 0x112, 0x5a); 644 ret = regmap_write(dev->regmap, 0x102, 0x40); 645 ret = regmap_write(dev->regmap, 0x103, 0x5a); 646 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 647 ret = regmap_write(dev->regmap, 0x104, 0xcc); 648 ret = regmap_write(dev->regmap, 0x105, 0xbe); 649 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 650 ret = regmap_write(dev->regmap, 0x106, 0x35); 651 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 652 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 653 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 654 ret = regmap_write(dev->regmap, 0x107, 0x40); 655 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 656 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 657 ret = regmap_write(dev->regmap, 0x108, 0x80); 658 ret = regmap_write(dev->regmap, 0x109, 0x7f); 659 ret = regmap_write(dev->regmap, 0x10a, 0x80); 660 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 661 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 662 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 663 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xbf", 2); 664 ret = regmap_write(dev->regmap, 0x1e5, 0xf0); 665 ret = regmap_write(dev->regmap, 0x1d9, 0x00); 666 ret = regmap_write(dev->regmap, 0x1db, 0x00); 667 ret = regmap_write(dev->regmap, 0x1dd, 0x11); 668 ret = regmap_write(dev->regmap, 0x1de, 0xef); 669 ret = regmap_write(dev->regmap, 0x1d8, 0x0c); 670 ret = regmap_write(dev->regmap, 0x1e6, 0x02); 671 ret = regmap_write(dev->regmap, 0x1d7, 0x09); 672 break; 673 case RTL2832_SDR_TUNER_R820T: 674 case RTL2832_SDR_TUNER_R828D: 675 ret = regmap_write(dev->regmap, 0x112, 0x5a); 676 ret = regmap_write(dev->regmap, 0x102, 0x40); 677 ret = regmap_write(dev->regmap, 0x115, 0x01); 678 ret = regmap_write(dev->regmap, 0x103, 0x80); 679 ret = regmap_write(dev->regmap, 0x1c7, 0x24); 680 ret = regmap_write(dev->regmap, 0x104, 0xcc); 681 ret = regmap_write(dev->regmap, 0x105, 0xbe); 682 ret = regmap_write(dev->regmap, 0x1c8, 0x14); 683 ret = regmap_write(dev->regmap, 0x106, 0x35); 684 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 685 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 686 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 687 ret = regmap_write(dev->regmap, 0x107, 0x40); 688 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 689 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 690 ret = regmap_write(dev->regmap, 0x108, 0x80); 691 ret = regmap_write(dev->regmap, 0x109, 0x7f); 692 ret = regmap_write(dev->regmap, 0x10a, 0x80); 693 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 694 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 695 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 696 ret = regmap_write(dev->regmap, 0x011, 0xf4); 697 break; 698 case RTL2832_SDR_TUNER_FC2580: 699 ret = regmap_write(dev->regmap, 0x112, 0x39); 700 ret = regmap_write(dev->regmap, 0x102, 0x40); 701 ret = regmap_write(dev->regmap, 0x103, 0x5a); 702 ret = regmap_write(dev->regmap, 0x1c7, 0x2c); 703 ret = regmap_write(dev->regmap, 0x104, 0xcc); 704 ret = regmap_write(dev->regmap, 0x105, 0xbe); 705 ret = regmap_write(dev->regmap, 0x1c8, 0x16); 706 ret = regmap_write(dev->regmap, 0x106, 0x35); 707 ret = regmap_write(dev->regmap, 0x1c9, 0x21); 708 ret = regmap_write(dev->regmap, 0x1ca, 0x21); 709 ret = regmap_write(dev->regmap, 0x1cb, 0x00); 710 ret = regmap_write(dev->regmap, 0x107, 0x40); 711 ret = regmap_write(dev->regmap, 0x1cd, 0x10); 712 ret = regmap_write(dev->regmap, 0x1ce, 0x10); 713 ret = regmap_write(dev->regmap, 0x108, 0x80); 714 ret = regmap_write(dev->regmap, 0x109, 0x7f); 715 ret = regmap_write(dev->regmap, 0x10a, 0x9c); 716 ret = regmap_write(dev->regmap, 0x10b, 0x7f); 717 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 718 ret = regmap_write(dev->regmap, 0x00e, 0xfc); 719 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xf4", 2); 720 break; 721 default: 722 dev_notice(&pdev->dev, "Unsupported tuner\n"); 723 } 724 725 /* software reset */ 726 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x04); 727 if (ret) 728 goto err; 729 730 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x00); 731 if (ret) 732 goto err; 733err: 734 return ret; 735}; 736 737static 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(dev->regmap, 0x061, 0xe0); 746 if (ret) 747 goto err; 748 749 /* mode */ 750 ret = regmap_write(dev->regmap, 0x019, 0x20); 751 if (ret) 752 goto err; 753 754 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); 755 if (ret) 756 goto err; 757 758 /* FSM */ 759 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3); 760 if (ret) 761 goto err; 762 763 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x40\x00", 2); 764 if (ret) 765 goto err; 766 767 ret = regmap_bulk_write(dev->regmap, 0x115, "\x06\x3f\xce\xcc", 4); 768 if (ret) 769 goto err; 770err: 771 return; 772}; 773 774static 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(&dev->hdl, 793 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 794 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); 795 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 796 c->bandwidth_hz = dev->f_adc; 797 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc); 798 } else { 799 c->bandwidth_hz = v4l2_ctrl_g_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 819static 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 833static 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 847static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) 848{ 849 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(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, &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 902err: 903 mutex_unlock(&dev->v4l2_lock); 904 905 return ret; 906} 907 908static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) 909{ 910 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(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, &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(&dev->v4l2_lock); 941} 942 943static 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 953static 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(v->name, "ADC: Realtek RTL2832", 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(v->name, "RF: <unknown>", 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 985static 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 1007static 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 1038static 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 1065static 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 1109static 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 1125static 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 1139static 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 1170static 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 1193static 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 1223static 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 1233static 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 1242static 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(dev->bandwidth->step, 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(offset, 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 1290static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { 1291 .s_ctrl = rtl2832_sdr_s_ctrl, 1292}; 1293 1294static 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(&dev->hdl); 1303 v4l2_device_unregister(&dev->v4l2_dev); 1304 kfree(dev); 1305} 1306 1307/* Platform driver interface */ 1308static 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(pdev->dev.parent->driver->owner)) { 1330 dev_err(&pdev->dev, "Refcount fail"); 1331 ret = -EINVAL; 1332 goto err; 1333 } 1334 dev = kzalloc(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(&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(&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(&dev->hdl, subdev->ctrl_handler, 1379 NULL, 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(&dev->hdl, ops, 1385 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1386 0, 1, 1, 1); 1387 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1388 V4L2_CID_RF_TUNER_BANDWIDTH, 1389 0, 8000000, 100000, 0); 1390 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, 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(&dev->hdl, ops, 1396 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1397 0, 1, 1, 1); 1398 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1399 V4L2_CID_RF_TUNER_BANDWIDTH, 1400 6000000, 8000000, 1000000, 1401 6000000); 1402 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, 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(&dev->hdl, subdev->ctrl_handler, 1408 NULL, 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(&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; 1454err_v4l2_device_unregister: 1455 v4l2_device_unregister(&dev->v4l2_dev); 1456err_v4l2_ctrl_handler_free: 1457 v4l2_ctrl_handler_free(&dev->hdl); 1458err_kfree: 1459 kfree(dev); 1460err_module_put: 1461 module_put(pdev->dev.parent->driver->owner); 1462err: 1463 return ret; 1464} 1465 1466static 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(&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 1484static 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}; 1491module_platform_driver(rtl2832_sdr_driver); 1492 1493MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1494MODULE_DESCRIPTION("Realtek RTL2832 SDR driver"); 1495MODULE_LICENSE("GPL"); 1496