1/* 2 * Realtek RTL2832U SDR driver 3 * 4 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License along 17 * with this program; if not, write to the Free Software Foundation, Inc., 18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * GNU Radio plugin "gr-kernel" for device usage will be on: 21 * http://git.linuxtv.org/anttip/gr-kernel.git 22 * 23 */ 24 25#include "rtl2832_sdr.h" 26#include "dvb_usb.h" 27 28#include <media/v4l2-device.h> 29#include <media/v4l2-ioctl.h> 30#include <media/v4l2-ctrls.h> 31#include <media/v4l2-event.h> 32#include <media/videobuf2-vmalloc.h> 33 34#include <linux/platform_device.h> 35#include <linux/jiffies.h> 36#include <linux/math64.h> 37 38static bool rtl2832_sdr_emulated_fmt; 39module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644); 40MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)"); 41 42#define MAX_BULK_BUFS (10) 43#define BULK_BUFFER_SIZE (128 * 512) 44 45static const struct v4l2_frequency_band bands_adc[] = { 46 { 47 .tuner = 0, 48 .type = V4L2_TUNER_ADC, 49 .index = 0, 50 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 51 .rangelow = 300000, 52 .rangehigh = 300000, 53 }, 54 { 55 .tuner = 0, 56 .type = V4L2_TUNER_ADC, 57 .index = 1, 58 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 59 .rangelow = 900001, 60 .rangehigh = 2800000, 61 }, 62 { 63 .tuner = 0, 64 .type = V4L2_TUNER_ADC, 65 .index = 2, 66 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 67 .rangelow = 3200000, 68 .rangehigh = 3200000, 69 }, 70}; 71 72static const struct v4l2_frequency_band bands_fm[] = { 73 { 74 .tuner = 1, 75 .type = V4L2_TUNER_RF, 76 .index = 0, 77 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, 78 .rangelow = 50000000, 79 .rangehigh = 2000000000, 80 }, 81}; 82 83/* stream formats */ 84struct rtl2832_sdr_format { 85 char *name; 86 u32 pixelformat; 87 u32 buffersize; 88}; 89 90static struct rtl2832_sdr_format formats[] = { 91 { 92 .name = "Complex U8", 93 .pixelformat = V4L2_SDR_FMT_CU8, 94 .buffersize = BULK_BUFFER_SIZE, 95 }, { 96 .name = "Complex U16LE (emulated)", 97 .pixelformat = V4L2_SDR_FMT_CU16LE, 98 .buffersize = BULK_BUFFER_SIZE * 2, 99 }, 100}; 101 102static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); 103 104/* intermediate buffers with raw data from the USB device */ 105struct rtl2832_sdr_frame_buf { 106 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */ 107 struct list_head list; 108}; 109 110struct rtl2832_sdr_dev { 111#define POWER_ON (1 << 1) 112#define URB_BUF (1 << 2) 113 unsigned long flags; 114 115 struct platform_device *pdev; 116 117 struct video_device vdev; 118 struct v4l2_device v4l2_dev; 119 120 /* videobuf2 queue and queued buffers list */ 121 struct vb2_queue vb_queue; 122 struct list_head queued_bufs; 123 spinlock_t queued_bufs_lock; /* Protects queued_bufs */ 124 unsigned sequence; /* buffer sequence counter */ 125 126 /* Note if taking both locks v4l2_lock must always be locked first! */ 127 struct mutex v4l2_lock; /* Protects everything else */ 128 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ 129 130 /* Pointer to our usb_device, will be NULL after unplug */ 131 struct usb_device *udev; /* Both mutexes most be hold when setting! */ 132 133 unsigned int vb_full; /* vb is full and packets dropped */ 134 135 struct urb *urb_list[MAX_BULK_BUFS]; 136 int buf_num; 137 unsigned long buf_size; 138 u8 *buf_list[MAX_BULK_BUFS]; 139 dma_addr_t dma_addr[MAX_BULK_BUFS]; 140 int urbs_initialized; 141 int urbs_submitted; 142 143 unsigned int f_adc, f_tuner; 144 u32 pixelformat; 145 u32 buffersize; 146 unsigned int num_formats; 147 148 /* Controls */ 149 struct v4l2_ctrl_handler hdl; 150 struct v4l2_ctrl *bandwidth_auto; 151 struct v4l2_ctrl *bandwidth; 152 153 /* for sample rate calc */ 154 unsigned int sample; 155 unsigned int sample_measured; 156 unsigned long jiffies_next; 157}; 158 159/* write multiple registers */ 160static int rtl2832_sdr_wr_regs(struct rtl2832_sdr_dev *dev, u16 reg, 161 const u8 *val, int len) 162{ 163 struct platform_device *pdev = dev->pdev; 164 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 165 struct i2c_client *client = pdata->i2c_client; 166 167 return pdata->bulk_write(client, reg, val, len); 168} 169 170#if 0 171/* read multiple registers */ 172static int rtl2832_sdr_rd_regs(struct rtl2832_sdr_dev *dev, u16 reg, u8 *val, 173 int len) 174{ 175 struct platform_device *pdev = dev->pdev; 176 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 177 struct i2c_client *client = pdata->i2c_client; 178 179 return pdata->bulk_read(client, reg, val, len); 180} 181#endif 182 183/* write single register */ 184static int rtl2832_sdr_wr_reg(struct rtl2832_sdr_dev *dev, u16 reg, u8 val) 185{ 186 return rtl2832_sdr_wr_regs(dev, reg, &val, 1); 187} 188 189/* write single register with mask */ 190static int rtl2832_sdr_wr_reg_mask(struct rtl2832_sdr_dev *dev, u16 reg, 191 u8 val, u8 mask) 192{ 193 struct platform_device *pdev = dev->pdev; 194 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 195 struct i2c_client *client = pdata->i2c_client; 196 197 return pdata->update_bits(client, reg, mask, val); 198} 199 200/* Private functions */ 201static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf( 202 struct rtl2832_sdr_dev *dev) 203{ 204 unsigned long flags; 205 struct rtl2832_sdr_frame_buf *buf = NULL; 206 207 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 208 if (list_empty(&dev->queued_bufs)) 209 goto leave; 210 211 buf = list_entry(dev->queued_bufs.next, 212 struct rtl2832_sdr_frame_buf, list); 213 list_del(&buf->list); 214leave: 215 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 216 return buf; 217} 218 219static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev, 220 void *dst, const u8 *src, unsigned int src_len) 221{ 222 struct platform_device *pdev = dev->pdev; 223 unsigned int dst_len; 224 225 if (dev->pixelformat == V4L2_SDR_FMT_CU8) { 226 /* native stream, no need to convert */ 227 memcpy(dst, src, src_len); 228 dst_len = src_len; 229 } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) { 230 /* convert u8 to u16 */ 231 unsigned int i; 232 u16 *u16dst = dst; 233 234 for (i = 0; i < src_len; i++) 235 *u16dst++ = (src[i] << 8) | (src[i] >> 0); 236 dst_len = 2 * src_len; 237 } else { 238 dst_len = 0; 239 } 240 241 /* calculate sample rate and output it in 10 seconds intervals */ 242 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) { 243 #define MSECS 10000UL 244 unsigned int msecs = jiffies_to_msecs(jiffies - 245 dev->jiffies_next + msecs_to_jiffies(MSECS)); 246 unsigned int samples = dev->sample - dev->sample_measured; 247 248 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS); 249 dev->sample_measured = dev->sample; 250 dev_dbg(&pdev->dev, 251 "slen=%u samples=%u msecs=%u sample rate=%lu\n", 252 src_len, samples, msecs, samples * 1000UL / msecs); 253 } 254 255 /* total number of I+Q pairs */ 256 dev->sample += src_len / 2; 257 258 return dst_len; 259} 260 261/* 262 * This gets called for the bulk stream pipe. This is done in interrupt 263 * time, so it has to be fast, not crash, and not stall. Neat. 264 */ 265static void rtl2832_sdr_urb_complete(struct urb *urb) 266{ 267 struct rtl2832_sdr_dev *dev = urb->context; 268 struct platform_device *pdev = dev->pdev; 269 struct rtl2832_sdr_frame_buf *fbuf; 270 271 dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n", 272 urb->status, urb->actual_length, 273 urb->transfer_buffer_length, urb->error_count); 274 275 switch (urb->status) { 276 case 0: /* success */ 277 case -ETIMEDOUT: /* NAK */ 278 break; 279 case -ECONNRESET: /* kill */ 280 case -ENOENT: 281 case -ESHUTDOWN: 282 return; 283 default: /* error */ 284 dev_err_ratelimited(&pdev->dev, "urb failed=%d\n", urb->status); 285 break; 286 } 287 288 if (likely(urb->actual_length > 0)) { 289 void *ptr; 290 unsigned int len; 291 /* get free framebuffer */ 292 fbuf = rtl2832_sdr_get_next_fill_buf(dev); 293 if (unlikely(fbuf == NULL)) { 294 dev->vb_full++; 295 dev_notice_ratelimited(&pdev->dev, 296 "videobuf is full, %d packets dropped\n", 297 dev->vb_full); 298 goto skip; 299 } 300 301 /* fill framebuffer */ 302 ptr = vb2_plane_vaddr(&fbuf->vb, 0); 303 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer, 304 urb->actual_length); 305 vb2_set_plane_payload(&fbuf->vb, 0, len); 306 v4l2_get_timestamp(&fbuf->vb.v4l2_buf.timestamp); 307 fbuf->vb.v4l2_buf.sequence = dev->sequence++; 308 vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); 309 } 310skip: 311 usb_submit_urb(urb, GFP_ATOMIC); 312} 313 314static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev) 315{ 316 struct platform_device *pdev = dev->pdev; 317 int i; 318 319 for (i = dev->urbs_submitted - 1; i >= 0; i--) { 320 dev_dbg(&pdev->dev, "kill urb=%d\n", i); 321 /* stop the URB */ 322 usb_kill_urb(dev->urb_list[i]); 323 } 324 dev->urbs_submitted = 0; 325 326 return 0; 327} 328 329static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev) 330{ 331 struct platform_device *pdev = dev->pdev; 332 int i, ret; 333 334 for (i = 0; i < dev->urbs_initialized; i++) { 335 dev_dbg(&pdev->dev, "submit urb=%d\n", i); 336 ret = usb_submit_urb(dev->urb_list[i], GFP_ATOMIC); 337 if (ret) { 338 dev_err(&pdev->dev, 339 "Could not submit urb no. %d - get them all back\n", 340 i); 341 rtl2832_sdr_kill_urbs(dev); 342 return ret; 343 } 344 dev->urbs_submitted++; 345 } 346 347 return 0; 348} 349 350static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev) 351{ 352 struct platform_device *pdev = dev->pdev; 353 354 if (dev->flags & USB_STATE_URB_BUF) { 355 while (dev->buf_num) { 356 dev->buf_num--; 357 dev_dbg(&pdev->dev, "free buf=%d\n", dev->buf_num); 358 usb_free_coherent(dev->udev, dev->buf_size, 359 dev->buf_list[dev->buf_num], 360 dev->dma_addr[dev->buf_num]); 361 } 362 } 363 dev->flags &= ~USB_STATE_URB_BUF; 364 365 return 0; 366} 367 368static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev) 369{ 370 struct platform_device *pdev = dev->pdev; 371 372 dev->buf_num = 0; 373 dev->buf_size = BULK_BUFFER_SIZE; 374 375 dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n", 376 MAX_BULK_BUFS * BULK_BUFFER_SIZE); 377 378 for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) { 379 dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev, 380 BULK_BUFFER_SIZE, GFP_ATOMIC, 381 &dev->dma_addr[dev->buf_num]); 382 if (!dev->buf_list[dev->buf_num]) { 383 dev_dbg(&pdev->dev, "alloc buf=%d failed\n", 384 dev->buf_num); 385 rtl2832_sdr_free_stream_bufs(dev); 386 return -ENOMEM; 387 } 388 389 dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n", 390 dev->buf_num, dev->buf_list[dev->buf_num], 391 (long long)dev->dma_addr[dev->buf_num]); 392 dev->flags |= USB_STATE_URB_BUF; 393 } 394 395 return 0; 396} 397 398static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev) 399{ 400 struct platform_device *pdev = dev->pdev; 401 int i; 402 403 rtl2832_sdr_kill_urbs(dev); 404 405 for (i = dev->urbs_initialized - 1; i >= 0; i--) { 406 if (dev->urb_list[i]) { 407 dev_dbg(&pdev->dev, "free urb=%d\n", i); 408 /* free the URBs */ 409 usb_free_urb(dev->urb_list[i]); 410 } 411 } 412 dev->urbs_initialized = 0; 413 414 return 0; 415} 416 417static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev) 418{ 419 struct platform_device *pdev = dev->pdev; 420 int i, j; 421 422 /* allocate the URBs */ 423 for (i = 0; i < MAX_BULK_BUFS; i++) { 424 dev_dbg(&pdev->dev, "alloc urb=%d\n", i); 425 dev->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC); 426 if (!dev->urb_list[i]) { 427 dev_dbg(&pdev->dev, "failed\n"); 428 for (j = 0; j < i; j++) 429 usb_free_urb(dev->urb_list[j]); 430 return -ENOMEM; 431 } 432 usb_fill_bulk_urb(dev->urb_list[i], 433 dev->udev, 434 usb_rcvbulkpipe(dev->udev, 0x81), 435 dev->buf_list[i], 436 BULK_BUFFER_SIZE, 437 rtl2832_sdr_urb_complete, dev); 438 439 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 440 dev->urb_list[i]->transfer_dma = dev->dma_addr[i]; 441 dev->urbs_initialized++; 442 } 443 444 return 0; 445} 446 447/* Must be called with vb_queue_lock hold */ 448static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev) 449{ 450 struct platform_device *pdev = dev->pdev; 451 unsigned long flags; 452 453 dev_dbg(&pdev->dev, "\n"); 454 455 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 456 while (!list_empty(&dev->queued_bufs)) { 457 struct rtl2832_sdr_frame_buf *buf; 458 459 buf = list_entry(dev->queued_bufs.next, 460 struct rtl2832_sdr_frame_buf, list); 461 list_del(&buf->list); 462 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 463 } 464 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 465} 466 467static int rtl2832_sdr_querycap(struct file *file, void *fh, 468 struct v4l2_capability *cap) 469{ 470 struct rtl2832_sdr_dev *dev = video_drvdata(file); 471 struct platform_device *pdev = dev->pdev; 472 473 dev_dbg(&pdev->dev, "\n"); 474 475 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); 476 strlcpy(cap->card, dev->vdev.name, sizeof(cap->card)); 477 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); 478 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | 479 V4L2_CAP_READWRITE | V4L2_CAP_TUNER; 480 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 481 return 0; 482} 483 484/* Videobuf2 operations */ 485static int rtl2832_sdr_queue_setup(struct vb2_queue *vq, 486 const struct v4l2_format *fmt, unsigned int *nbuffers, 487 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) 488{ 489 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 490 struct platform_device *pdev = dev->pdev; 491 492 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers); 493 494 /* Need at least 8 buffers */ 495 if (vq->num_buffers + *nbuffers < 8) 496 *nbuffers = 8 - vq->num_buffers; 497 *nplanes = 1; 498 sizes[0] = PAGE_ALIGN(dev->buffersize); 499 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); 500 return 0; 501} 502 503static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) 504{ 505 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 506 507 /* Don't allow queing new buffers after device disconnection */ 508 if (!dev->udev) 509 return -ENODEV; 510 511 return 0; 512} 513 514static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) 515{ 516 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); 517 struct rtl2832_sdr_frame_buf *buf = 518 container_of(vb, struct rtl2832_sdr_frame_buf, vb); 519 unsigned long flags; 520 521 /* Check the device has not disconnected between prep and queuing */ 522 if (!dev->udev) { 523 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 524 return; 525 } 526 527 spin_lock_irqsave(&dev->queued_bufs_lock, flags); 528 list_add_tail(&buf->list, &dev->queued_bufs); 529 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); 530} 531 532static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev) 533{ 534 struct platform_device *pdev = dev->pdev; 535 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 536 struct dvb_frontend *fe = pdata->dvb_frontend; 537 int ret; 538 unsigned int f_sr, f_if; 539 u8 buf[4], u8tmp1, u8tmp2; 540 u64 u64tmp; 541 u32 u32tmp; 542 543 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc); 544 545 if (!test_bit(POWER_ON, &dev->flags)) 546 return 0; 547 548 if (dev->f_adc == 0) 549 return 0; 550 551 f_sr = dev->f_adc; 552 553 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x00\x00", 2); 554 if (ret) 555 goto err; 556 557 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x00\x00\x00\x00", 4); 558 if (ret) 559 goto err; 560 561 /* get IF from tuner */ 562 if (fe->ops.tuner_ops.get_if_frequency) 563 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); 564 else 565 ret = -EINVAL; 566 567 if (ret) 568 goto err; 569 570 /* program IF */ 571 u64tmp = f_if % pdata->clk; 572 u64tmp *= 0x400000; 573 u64tmp = div_u64(u64tmp, pdata->clk); 574 u64tmp = -u64tmp; 575 u32tmp = u64tmp & 0x3fffff; 576 577 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp); 578 579 buf[0] = (u32tmp >> 16) & 0xff; 580 buf[1] = (u32tmp >> 8) & 0xff; 581 buf[2] = (u32tmp >> 0) & 0xff; 582 583 ret = rtl2832_sdr_wr_regs(dev, 0x119, buf, 3); 584 if (ret) 585 goto err; 586 587 /* BB / IF mode */ 588 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ 589 if (f_if) { 590 u8tmp1 = 0x1a; /* disable Zero-IF */ 591 u8tmp2 = 0x8d; /* enable ADC I */ 592 } else { 593 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ 594 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ 595 } 596 597 ret = rtl2832_sdr_wr_reg(dev, 0x1b1, u8tmp1); 598 if (ret) 599 goto err; 600 601 ret = rtl2832_sdr_wr_reg(dev, 0x008, u8tmp2); 602 if (ret) 603 goto err; 604 605 ret = rtl2832_sdr_wr_reg(dev, 0x006, 0x80); 606 if (ret) 607 goto err; 608 609 /* program sampling rate (resampling down) */ 610 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U); 611 u32tmp <<= 2; 612 buf[0] = (u32tmp >> 24) & 0xff; 613 buf[1] = (u32tmp >> 16) & 0xff; 614 buf[2] = (u32tmp >> 8) & 0xff; 615 buf[3] = (u32tmp >> 0) & 0xff; 616 ret = rtl2832_sdr_wr_regs(dev, 0x19f, buf, 4); 617 if (ret) 618 goto err; 619 620 /* low-pass filter */ 621 ret = rtl2832_sdr_wr_regs(dev, 0x11c, 622 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5", 623 20); 624 if (ret) 625 goto err; 626 627 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2); 628 if (ret) 629 goto err; 630 631 /* mode */ 632 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x05", 1); 633 if (ret) 634 goto err; 635 636 ret = rtl2832_sdr_wr_regs(dev, 0x01a, "\x1b\x16\x0d\x06\x01\xff", 6); 637 if (ret) 638 goto err; 639 640 /* FSM */ 641 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\xf0\x0f", 3); 642 if (ret) 643 goto err; 644 645 /* PID filter */ 646 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\x60", 1); 647 if (ret) 648 goto err; 649 650 /* used RF tuner based settings */ 651 switch (pdata->tuner) { 652 case RTL2832_SDR_TUNER_E4000: 653 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1); 654 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1); 655 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1); 656 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x30", 1); 657 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xd0", 1); 658 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1); 659 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x18", 1); 660 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1); 661 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1); 662 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1); 663 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1); 664 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1); 665 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1); 666 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1); 667 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1); 668 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1); 669 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1); 670 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1); 671 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1); 672 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1); 673 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xd4", 1); 674 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1); 675 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1); 676 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1); 677 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x14", 1); 678 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xec", 1); 679 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1); 680 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1); 681 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1); 682 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x83", 1); 683 ret = rtl2832_sdr_wr_regs(dev, 0x010, "\x49", 1); 684 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x87", 1); 685 ret = rtl2832_sdr_wr_regs(dev, 0x00d, "\x85", 1); 686 ret = rtl2832_sdr_wr_regs(dev, 0x013, "\x02", 1); 687 break; 688 case RTL2832_SDR_TUNER_FC0012: 689 case RTL2832_SDR_TUNER_FC0013: 690 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1); 691 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1); 692 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x5a", 1); 693 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x2c", 1); 694 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1); 695 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1); 696 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x16", 1); 697 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1); 698 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1); 699 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1); 700 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1); 701 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1); 702 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1); 703 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1); 704 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1); 705 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1); 706 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1); 707 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1); 708 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1); 709 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1); 710 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xe9\xbf", 2); 711 ret = rtl2832_sdr_wr_regs(dev, 0x1e5, "\xf0", 1); 712 ret = rtl2832_sdr_wr_regs(dev, 0x1d9, "\x00", 1); 713 ret = rtl2832_sdr_wr_regs(dev, 0x1db, "\x00", 1); 714 ret = rtl2832_sdr_wr_regs(dev, 0x1dd, "\x11", 1); 715 ret = rtl2832_sdr_wr_regs(dev, 0x1de, "\xef", 1); 716 ret = rtl2832_sdr_wr_regs(dev, 0x1d8, "\x0c", 1); 717 ret = rtl2832_sdr_wr_regs(dev, 0x1e6, "\x02", 1); 718 ret = rtl2832_sdr_wr_regs(dev, 0x1d7, "\x09", 1); 719 break; 720 case RTL2832_SDR_TUNER_R820T: 721 case RTL2832_SDR_TUNER_R828D: 722 ret = rtl2832_sdr_wr_regs(dev, 0x112, "\x5a", 1); 723 ret = rtl2832_sdr_wr_regs(dev, 0x102, "\x40", 1); 724 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x01", 1); 725 ret = rtl2832_sdr_wr_regs(dev, 0x103, "\x80", 1); 726 ret = rtl2832_sdr_wr_regs(dev, 0x1c7, "\x24", 1); 727 ret = rtl2832_sdr_wr_regs(dev, 0x104, "\xcc", 1); 728 ret = rtl2832_sdr_wr_regs(dev, 0x105, "\xbe", 1); 729 ret = rtl2832_sdr_wr_regs(dev, 0x1c8, "\x14", 1); 730 ret = rtl2832_sdr_wr_regs(dev, 0x106, "\x35", 1); 731 ret = rtl2832_sdr_wr_regs(dev, 0x1c9, "\x21", 1); 732 ret = rtl2832_sdr_wr_regs(dev, 0x1ca, "\x21", 1); 733 ret = rtl2832_sdr_wr_regs(dev, 0x1cb, "\x00", 1); 734 ret = rtl2832_sdr_wr_regs(dev, 0x107, "\x40", 1); 735 ret = rtl2832_sdr_wr_regs(dev, 0x1cd, "\x10", 1); 736 ret = rtl2832_sdr_wr_regs(dev, 0x1ce, "\x10", 1); 737 ret = rtl2832_sdr_wr_regs(dev, 0x108, "\x80", 1); 738 ret = rtl2832_sdr_wr_regs(dev, 0x109, "\x7f", 1); 739 ret = rtl2832_sdr_wr_regs(dev, 0x10a, "\x80", 1); 740 ret = rtl2832_sdr_wr_regs(dev, 0x10b, "\x7f", 1); 741 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1); 742 ret = rtl2832_sdr_wr_regs(dev, 0x00e, "\xfc", 1); 743 ret = rtl2832_sdr_wr_regs(dev, 0x011, "\xf4", 1); 744 break; 745 default: 746 dev_notice(&pdev->dev, "Unsupported tuner\n"); 747 } 748 749 /* software reset */ 750 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x04, 0x04); 751 if (ret) 752 goto err; 753 754 ret = rtl2832_sdr_wr_reg_mask(dev, 0x101, 0x00, 0x04); 755 if (ret) 756 goto err; 757err: 758 return ret; 759}; 760 761static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev) 762{ 763 struct platform_device *pdev = dev->pdev; 764 int ret; 765 766 dev_dbg(&pdev->dev, "\n"); 767 768 /* PID filter */ 769 ret = rtl2832_sdr_wr_regs(dev, 0x061, "\xe0", 1); 770 if (ret) 771 goto err; 772 773 /* mode */ 774 ret = rtl2832_sdr_wr_regs(dev, 0x019, "\x20", 1); 775 if (ret) 776 goto err; 777 778 ret = rtl2832_sdr_wr_regs(dev, 0x017, "\x11\x10", 2); 779 if (ret) 780 goto err; 781 782 /* FSM */ 783 ret = rtl2832_sdr_wr_regs(dev, 0x192, "\x00\x0f\xff", 3); 784 if (ret) 785 goto err; 786 787 ret = rtl2832_sdr_wr_regs(dev, 0x13e, "\x40\x00", 2); 788 if (ret) 789 goto err; 790 791 ret = rtl2832_sdr_wr_regs(dev, 0x115, "\x06\x3f\xce\xcc", 4); 792 if (ret) 793 goto err; 794err: 795 return; 796}; 797 798static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev) 799{ 800 struct platform_device *pdev = dev->pdev; 801 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 802 struct dvb_frontend *fe = pdata->dvb_frontend; 803 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 804 struct v4l2_ctrl *bandwidth_auto; 805 struct v4l2_ctrl *bandwidth; 806 807 /* 808 * tuner RF (Hz) 809 */ 810 if (dev->f_tuner == 0) 811 return 0; 812 813 /* 814 * bandwidth (Hz) 815 */ 816 bandwidth_auto = v4l2_ctrl_find(&dev->hdl, 817 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 818 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); 819 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 820 c->bandwidth_hz = dev->f_adc; 821 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc); 822 } else { 823 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth); 824 } 825 826 c->frequency = dev->f_tuner; 827 c->delivery_system = SYS_DVBT; 828 829 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n", 830 c->frequency, c->bandwidth_hz); 831 832 if (!test_bit(POWER_ON, &dev->flags)) 833 return 0; 834 835 if (fe->ops.tuner_ops.set_params) 836 fe->ops.tuner_ops.set_params(fe); 837 838 return 0; 839}; 840 841static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev) 842{ 843 struct platform_device *pdev = dev->pdev; 844 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 845 struct dvb_frontend *fe = pdata->dvb_frontend; 846 847 dev_dbg(&pdev->dev, "\n"); 848 849 if (fe->ops.tuner_ops.init) 850 fe->ops.tuner_ops.init(fe); 851 852 return 0; 853}; 854 855static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev) 856{ 857 struct platform_device *pdev = dev->pdev; 858 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 859 struct dvb_frontend *fe = pdata->dvb_frontend; 860 861 dev_dbg(&pdev->dev, "\n"); 862 863 if (fe->ops.tuner_ops.sleep) 864 fe->ops.tuner_ops.sleep(fe); 865 866 return; 867}; 868 869static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) 870{ 871 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 872 struct platform_device *pdev = dev->pdev; 873 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 874 struct dvb_usb_device *d = pdata->dvb_usb_device; 875 int ret; 876 877 dev_dbg(&pdev->dev, "\n"); 878 879 if (!dev->udev) 880 return -ENODEV; 881 882 if (mutex_lock_interruptible(&dev->v4l2_lock)) 883 return -ERESTARTSYS; 884 885 if (d->props->power_ctrl) 886 d->props->power_ctrl(d, 1); 887 888 /* enable ADC */ 889 if (d->props->frontend_ctrl) 890 d->props->frontend_ctrl(pdata->dvb_frontend, 1); 891 892 set_bit(POWER_ON, &dev->flags); 893 894 ret = rtl2832_sdr_set_tuner(dev); 895 if (ret) 896 goto err; 897 898 ret = rtl2832_sdr_set_tuner_freq(dev); 899 if (ret) 900 goto err; 901 902 ret = rtl2832_sdr_set_adc(dev); 903 if (ret) 904 goto err; 905 906 ret = rtl2832_sdr_alloc_stream_bufs(dev); 907 if (ret) 908 goto err; 909 910 ret = rtl2832_sdr_alloc_urbs(dev); 911 if (ret) 912 goto err; 913 914 dev->sequence = 0; 915 916 ret = rtl2832_sdr_submit_urbs(dev); 917 if (ret) 918 goto err; 919 920err: 921 mutex_unlock(&dev->v4l2_lock); 922 923 return ret; 924} 925 926static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) 927{ 928 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); 929 struct platform_device *pdev = dev->pdev; 930 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 931 struct dvb_usb_device *d = pdata->dvb_usb_device; 932 933 dev_dbg(&pdev->dev, "\n"); 934 935 mutex_lock(&dev->v4l2_lock); 936 937 rtl2832_sdr_kill_urbs(dev); 938 rtl2832_sdr_free_urbs(dev); 939 rtl2832_sdr_free_stream_bufs(dev); 940 rtl2832_sdr_cleanup_queued_bufs(dev); 941 rtl2832_sdr_unset_adc(dev); 942 rtl2832_sdr_unset_tuner(dev); 943 944 clear_bit(POWER_ON, &dev->flags); 945 946 /* disable ADC */ 947 if (d->props->frontend_ctrl) 948 d->props->frontend_ctrl(pdata->dvb_frontend, 0); 949 950 if (d->props->power_ctrl) 951 d->props->power_ctrl(d, 0); 952 953 mutex_unlock(&dev->v4l2_lock); 954} 955 956static struct vb2_ops rtl2832_sdr_vb2_ops = { 957 .queue_setup = rtl2832_sdr_queue_setup, 958 .buf_prepare = rtl2832_sdr_buf_prepare, 959 .buf_queue = rtl2832_sdr_buf_queue, 960 .start_streaming = rtl2832_sdr_start_streaming, 961 .stop_streaming = rtl2832_sdr_stop_streaming, 962 .wait_prepare = vb2_ops_wait_prepare, 963 .wait_finish = vb2_ops_wait_finish, 964}; 965 966static int rtl2832_sdr_g_tuner(struct file *file, void *priv, 967 struct v4l2_tuner *v) 968{ 969 struct rtl2832_sdr_dev *dev = video_drvdata(file); 970 struct platform_device *pdev = dev->pdev; 971 972 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type); 973 974 if (v->index == 0) { 975 strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name)); 976 v->type = V4L2_TUNER_ADC; 977 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 978 v->rangelow = 300000; 979 v->rangehigh = 3200000; 980 } else if (v->index == 1) { 981 strlcpy(v->name, "RF: <unknown>", sizeof(v->name)); 982 v->type = V4L2_TUNER_RF; 983 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 984 v->rangelow = 50000000; 985 v->rangehigh = 2000000000; 986 } else { 987 return -EINVAL; 988 } 989 990 return 0; 991} 992 993static int rtl2832_sdr_s_tuner(struct file *file, void *priv, 994 const struct v4l2_tuner *v) 995{ 996 struct rtl2832_sdr_dev *dev = video_drvdata(file); 997 struct platform_device *pdev = dev->pdev; 998 999 dev_dbg(&pdev->dev, "\n"); 1000 1001 if (v->index > 1) 1002 return -EINVAL; 1003 return 0; 1004} 1005 1006static 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 1012 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n", 1013 band->tuner, band->type, band->index); 1014 1015 if (band->tuner == 0) { 1016 if (band->index >= ARRAY_SIZE(bands_adc)) 1017 return -EINVAL; 1018 1019 *band = bands_adc[band->index]; 1020 } else if (band->tuner == 1) { 1021 if (band->index >= ARRAY_SIZE(bands_fm)) 1022 return -EINVAL; 1023 1024 *band = bands_fm[band->index]; 1025 } else { 1026 return -EINVAL; 1027 } 1028 1029 return 0; 1030} 1031 1032static int rtl2832_sdr_g_frequency(struct file *file, void *priv, 1033 struct v4l2_frequency *f) 1034{ 1035 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1036 struct platform_device *pdev = dev->pdev; 1037 int ret = 0; 1038 1039 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type); 1040 1041 if (f->tuner == 0) { 1042 f->frequency = dev->f_adc; 1043 f->type = V4L2_TUNER_ADC; 1044 } else if (f->tuner == 1) { 1045 f->frequency = dev->f_tuner; 1046 f->type = V4L2_TUNER_RF; 1047 } else { 1048 return -EINVAL; 1049 } 1050 1051 return ret; 1052} 1053 1054static int rtl2832_sdr_s_frequency(struct file *file, void *priv, 1055 const struct v4l2_frequency *f) 1056{ 1057 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1058 struct platform_device *pdev = dev->pdev; 1059 int ret, band; 1060 1061 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n", 1062 f->tuner, f->type, f->frequency); 1063 1064 /* ADC band midpoints */ 1065 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) 1066 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) 1067 1068 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { 1069 if (f->frequency < BAND_ADC_0) 1070 band = 0; 1071 else if (f->frequency < BAND_ADC_1) 1072 band = 1; 1073 else 1074 band = 2; 1075 1076 dev->f_adc = clamp_t(unsigned int, f->frequency, 1077 bands_adc[band].rangelow, 1078 bands_adc[band].rangehigh); 1079 1080 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc); 1081 ret = rtl2832_sdr_set_adc(dev); 1082 } else if (f->tuner == 1) { 1083 dev->f_tuner = clamp_t(unsigned int, f->frequency, 1084 bands_fm[0].rangelow, 1085 bands_fm[0].rangehigh); 1086 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency); 1087 1088 ret = rtl2832_sdr_set_tuner_freq(dev); 1089 } else { 1090 ret = -EINVAL; 1091 } 1092 1093 return ret; 1094} 1095 1096static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, 1097 struct v4l2_fmtdesc *f) 1098{ 1099 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1100 struct platform_device *pdev = dev->pdev; 1101 1102 dev_dbg(&pdev->dev, "\n"); 1103 1104 if (f->index >= dev->num_formats) 1105 return -EINVAL; 1106 1107 strlcpy(f->description, formats[f->index].name, sizeof(f->description)); 1108 f->pixelformat = formats[f->index].pixelformat; 1109 1110 return 0; 1111} 1112 1113static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, 1114 struct v4l2_format *f) 1115{ 1116 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1117 struct platform_device *pdev = dev->pdev; 1118 1119 dev_dbg(&pdev->dev, "\n"); 1120 1121 f->fmt.sdr.pixelformat = dev->pixelformat; 1122 f->fmt.sdr.buffersize = dev->buffersize; 1123 1124 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1125 1126 return 0; 1127} 1128 1129static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, 1130 struct v4l2_format *f) 1131{ 1132 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1133 struct platform_device *pdev = dev->pdev; 1134 struct vb2_queue *q = &dev->vb_queue; 1135 int i; 1136 1137 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", 1138 (char *)&f->fmt.sdr.pixelformat); 1139 1140 if (vb2_is_busy(q)) 1141 return -EBUSY; 1142 1143 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1144 for (i = 0; i < dev->num_formats; i++) { 1145 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1146 dev->pixelformat = formats[i].pixelformat; 1147 dev->buffersize = formats[i].buffersize; 1148 f->fmt.sdr.buffersize = formats[i].buffersize; 1149 return 0; 1150 } 1151 } 1152 1153 dev->pixelformat = formats[0].pixelformat; 1154 dev->buffersize = formats[0].buffersize; 1155 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1156 f->fmt.sdr.buffersize = formats[0].buffersize; 1157 1158 return 0; 1159} 1160 1161static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, 1162 struct v4l2_format *f) 1163{ 1164 struct rtl2832_sdr_dev *dev = video_drvdata(file); 1165 struct platform_device *pdev = dev->pdev; 1166 int i; 1167 1168 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", 1169 (char *)&f->fmt.sdr.pixelformat); 1170 1171 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1172 for (i = 0; i < dev->num_formats; i++) { 1173 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1174 f->fmt.sdr.buffersize = formats[i].buffersize; 1175 return 0; 1176 } 1177 } 1178 1179 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1180 f->fmt.sdr.buffersize = formats[0].buffersize; 1181 1182 return 0; 1183} 1184 1185static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = { 1186 .vidioc_querycap = rtl2832_sdr_querycap, 1187 1188 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap, 1189 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap, 1190 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap, 1191 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap, 1192 1193 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1194 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1195 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1196 .vidioc_querybuf = vb2_ioctl_querybuf, 1197 .vidioc_qbuf = vb2_ioctl_qbuf, 1198 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1199 1200 .vidioc_streamon = vb2_ioctl_streamon, 1201 .vidioc_streamoff = vb2_ioctl_streamoff, 1202 1203 .vidioc_g_tuner = rtl2832_sdr_g_tuner, 1204 .vidioc_s_tuner = rtl2832_sdr_s_tuner, 1205 1206 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands, 1207 .vidioc_g_frequency = rtl2832_sdr_g_frequency, 1208 .vidioc_s_frequency = rtl2832_sdr_s_frequency, 1209 1210 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1211 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1212 .vidioc_log_status = v4l2_ctrl_log_status, 1213}; 1214 1215static const struct v4l2_file_operations rtl2832_sdr_fops = { 1216 .owner = THIS_MODULE, 1217 .open = v4l2_fh_open, 1218 .release = vb2_fop_release, 1219 .read = vb2_fop_read, 1220 .poll = vb2_fop_poll, 1221 .mmap = vb2_fop_mmap, 1222 .unlocked_ioctl = video_ioctl2, 1223}; 1224 1225static struct video_device rtl2832_sdr_template = { 1226 .name = "Realtek RTL2832 SDR", 1227 .release = video_device_release_empty, 1228 .fops = &rtl2832_sdr_fops, 1229 .ioctl_ops = &rtl2832_sdr_ioctl_ops, 1230}; 1231 1232static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl) 1233{ 1234 struct rtl2832_sdr_dev *dev = 1235 container_of(ctrl->handler, struct rtl2832_sdr_dev, 1236 hdl); 1237 struct platform_device *pdev = dev->pdev; 1238 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 1239 struct dvb_frontend *fe = pdata->dvb_frontend; 1240 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 1241 int ret; 1242 1243 dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n", 1244 ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum, 1245 ctrl->step); 1246 1247 switch (ctrl->id) { 1248 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: 1249 case V4L2_CID_RF_TUNER_BANDWIDTH: 1250 /* TODO: these controls should be moved to tuner drivers */ 1251 if (dev->bandwidth_auto->val) { 1252 /* Round towards the closest legal value */ 1253 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2); 1254 u32 offset; 1255 1256 val = clamp_t(s32, val, dev->bandwidth->minimum, 1257 dev->bandwidth->maximum); 1258 offset = val - dev->bandwidth->minimum; 1259 offset = dev->bandwidth->step * 1260 div_u64(offset, dev->bandwidth->step); 1261 dev->bandwidth->val = dev->bandwidth->minimum + offset; 1262 } 1263 c->bandwidth_hz = dev->bandwidth->val; 1264 1265 if (!test_bit(POWER_ON, &dev->flags)) 1266 return 0; 1267 1268 if (fe->ops.tuner_ops.set_params) 1269 ret = fe->ops.tuner_ops.set_params(fe); 1270 else 1271 ret = 0; 1272 break; 1273 default: 1274 ret = -EINVAL; 1275 } 1276 1277 return ret; 1278} 1279 1280static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { 1281 .s_ctrl = rtl2832_sdr_s_ctrl, 1282}; 1283 1284static void rtl2832_sdr_video_release(struct v4l2_device *v) 1285{ 1286 struct rtl2832_sdr_dev *dev = 1287 container_of(v, struct rtl2832_sdr_dev, v4l2_dev); 1288 struct platform_device *pdev = dev->pdev; 1289 1290 dev_dbg(&pdev->dev, "\n"); 1291 1292 v4l2_ctrl_handler_free(&dev->hdl); 1293 v4l2_device_unregister(&dev->v4l2_dev); 1294 kfree(dev); 1295} 1296 1297/* Platform driver interface */ 1298static int rtl2832_sdr_probe(struct platform_device *pdev) 1299{ 1300 struct rtl2832_sdr_dev *dev; 1301 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; 1302 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops; 1303 struct v4l2_subdev *subdev; 1304 int ret; 1305 1306 dev_dbg(&pdev->dev, "\n"); 1307 1308 if (!pdata) { 1309 dev_err(&pdev->dev, "Cannot proceed without platform data\n"); 1310 ret = -EINVAL; 1311 goto err; 1312 } 1313 if (!pdev->dev.parent->driver) { 1314 dev_dbg(&pdev->dev, "No parent device\n"); 1315 ret = -EINVAL; 1316 goto err; 1317 } 1318 /* try to refcount host drv since we are the consumer */ 1319 if (!try_module_get(pdev->dev.parent->driver->owner)) { 1320 dev_err(&pdev->dev, "Refcount fail"); 1321 ret = -EINVAL; 1322 goto err; 1323 } 1324 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 1325 if (dev == NULL) { 1326 ret = -ENOMEM; 1327 goto err_module_put; 1328 } 1329 1330 /* setup the state */ 1331 subdev = pdata->v4l2_subdev; 1332 dev->pdev = pdev; 1333 dev->udev = pdata->dvb_usb_device->udev; 1334 dev->f_adc = bands_adc[0].rangelow; 1335 dev->f_tuner = bands_fm[0].rangelow; 1336 dev->pixelformat = formats[0].pixelformat; 1337 dev->buffersize = formats[0].buffersize; 1338 dev->num_formats = NUM_FORMATS; 1339 if (!rtl2832_sdr_emulated_fmt) 1340 dev->num_formats -= 1; 1341 1342 mutex_init(&dev->v4l2_lock); 1343 mutex_init(&dev->vb_queue_lock); 1344 spin_lock_init(&dev->queued_bufs_lock); 1345 INIT_LIST_HEAD(&dev->queued_bufs); 1346 1347 /* Init videobuf2 queue structure */ 1348 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; 1349 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 1350 dev->vb_queue.drv_priv = dev; 1351 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf); 1352 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops; 1353 dev->vb_queue.mem_ops = &vb2_vmalloc_memops; 1354 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1355 ret = vb2_queue_init(&dev->vb_queue); 1356 if (ret) { 1357 dev_err(&pdev->dev, "Could not initialize vb2 queue\n"); 1358 goto err_kfree; 1359 } 1360 1361 /* Register controls */ 1362 switch (pdata->tuner) { 1363 case RTL2832_SDR_TUNER_E4000: 1364 v4l2_ctrl_handler_init(&dev->hdl, 9); 1365 if (subdev) 1366 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, NULL); 1367 break; 1368 case RTL2832_SDR_TUNER_R820T: 1369 case RTL2832_SDR_TUNER_R828D: 1370 v4l2_ctrl_handler_init(&dev->hdl, 2); 1371 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, 1372 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1373 0, 1, 1, 1); 1374 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1375 V4L2_CID_RF_TUNER_BANDWIDTH, 1376 0, 8000000, 100000, 0); 1377 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); 1378 break; 1379 case RTL2832_SDR_TUNER_FC0012: 1380 case RTL2832_SDR_TUNER_FC0013: 1381 v4l2_ctrl_handler_init(&dev->hdl, 2); 1382 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, 1383 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1384 0, 1, 1, 1); 1385 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, 1386 V4L2_CID_RF_TUNER_BANDWIDTH, 1387 6000000, 8000000, 1000000, 1388 6000000); 1389 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); 1390 break; 1391 default: 1392 v4l2_ctrl_handler_init(&dev->hdl, 0); 1393 dev_err(&pdev->dev, "Unsupported tuner\n"); 1394 goto err_v4l2_ctrl_handler_free; 1395 } 1396 if (dev->hdl.error) { 1397 ret = dev->hdl.error; 1398 dev_err(&pdev->dev, "Could not initialize controls\n"); 1399 goto err_v4l2_ctrl_handler_free; 1400 } 1401 1402 /* Init video_device structure */ 1403 dev->vdev = rtl2832_sdr_template; 1404 dev->vdev.queue = &dev->vb_queue; 1405 dev->vdev.queue->lock = &dev->vb_queue_lock; 1406 video_set_drvdata(&dev->vdev, dev); 1407 1408 /* Register the v4l2_device structure */ 1409 dev->v4l2_dev.release = rtl2832_sdr_video_release; 1410 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 1411 if (ret) { 1412 dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret); 1413 goto err_v4l2_ctrl_handler_free; 1414 } 1415 1416 dev->v4l2_dev.ctrl_handler = &dev->hdl; 1417 dev->vdev.v4l2_dev = &dev->v4l2_dev; 1418 dev->vdev.lock = &dev->v4l2_lock; 1419 dev->vdev.vfl_dir = VFL_DIR_RX; 1420 1421 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1); 1422 if (ret) { 1423 dev_err(&pdev->dev, "Failed to register as video device %d\n", 1424 ret); 1425 goto err_v4l2_device_unregister; 1426 } 1427 dev_info(&pdev->dev, "Registered as %s\n", 1428 video_device_node_name(&dev->vdev)); 1429 dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n"); 1430 dev_notice(&pdev->dev, 1431 "SDR API is still slightly experimental and functionality changes may follow\n"); 1432 platform_set_drvdata(pdev, dev); 1433 return 0; 1434err_v4l2_device_unregister: 1435 v4l2_device_unregister(&dev->v4l2_dev); 1436err_v4l2_ctrl_handler_free: 1437 v4l2_ctrl_handler_free(&dev->hdl); 1438err_kfree: 1439 kfree(dev); 1440err_module_put: 1441 module_put(pdev->dev.parent->driver->owner); 1442err: 1443 return ret; 1444} 1445 1446static int rtl2832_sdr_remove(struct platform_device *pdev) 1447{ 1448 struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev); 1449 1450 dev_dbg(&pdev->dev, "\n"); 1451 1452 mutex_lock(&dev->vb_queue_lock); 1453 mutex_lock(&dev->v4l2_lock); 1454 /* No need to keep the urbs around after disconnection */ 1455 dev->udev = NULL; 1456 v4l2_device_disconnect(&dev->v4l2_dev); 1457 video_unregister_device(&dev->vdev); 1458 mutex_unlock(&dev->v4l2_lock); 1459 mutex_unlock(&dev->vb_queue_lock); 1460 v4l2_device_put(&dev->v4l2_dev); 1461 module_put(pdev->dev.parent->driver->owner); 1462 1463 return 0; 1464} 1465 1466static struct platform_driver rtl2832_sdr_driver = { 1467 .driver = { 1468 .name = "rtl2832_sdr", 1469 .owner = THIS_MODULE, 1470 }, 1471 .probe = rtl2832_sdr_probe, 1472 .remove = rtl2832_sdr_remove, 1473}; 1474module_platform_driver(rtl2832_sdr_driver); 1475 1476MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1477MODULE_DESCRIPTION("Realtek RTL2832 SDR driver"); 1478MODULE_LICENSE("GPL"); 1479