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 "dvb_frontend.h" 26 #include "rtl2832_sdr.h" 27 #include "dvb_usb.h" 28 29 #include <media/v4l2-device.h> 30 #include <media/v4l2-ioctl.h> 31 #include <media/v4l2-ctrls.h> 32 #include <media/v4l2-event.h> 33 #include <media/videobuf2-vmalloc.h> 34 35 #include <linux/jiffies.h> 36 #include <linux/math64.h> 37 38 static bool rtl2832_sdr_emulated_fmt; 39 module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644); 40 MODULE_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 45 static 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 72 static 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 */ 84 struct rtl2832_sdr_format { 85 char *name; 86 u32 pixelformat; 87 u32 buffersize; 88 }; 89 90 static 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 }; 101 102 static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); 103 104 /* intermediate buffers with raw data from the USB device */ 105 struct rtl2832_sdr_frame_buf { 106 struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */ 107 struct list_head list; 108 }; 109 110 struct rtl2832_sdr_state { 111 #define POWER_ON (1 << 1) 112 #define URB_BUF (1 << 2) 113 unsigned long flags; 114 115 const struct rtl2832_config *cfg; 116 struct dvb_frontend *fe; 117 struct dvb_usb_device *d; 118 struct i2c_adapter *i2c; 119 u8 bank; 120 121 struct video_device vdev; 122 struct v4l2_device v4l2_dev; 123 124 /* videobuf2 queue and queued buffers list */ 125 struct vb2_queue vb_queue; 126 struct list_head queued_bufs; 127 spinlock_t queued_bufs_lock; /* Protects queued_bufs */ 128 unsigned sequence; /* buffer sequence counter */ 129 130 /* Note if taking both locks v4l2_lock must always be locked first! */ 131 struct mutex v4l2_lock; /* Protects everything else */ 132 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ 133 134 /* Pointer to our usb_device, will be NULL after unplug */ 135 struct usb_device *udev; /* Both mutexes most be hold when setting! */ 136 137 unsigned int vb_full; /* vb is full and packets dropped */ 138 139 struct urb *urb_list[MAX_BULK_BUFS]; 140 int buf_num; 141 unsigned long buf_size; 142 u8 *buf_list[MAX_BULK_BUFS]; 143 dma_addr_t dma_addr[MAX_BULK_BUFS]; 144 int urbs_initialized; 145 int urbs_submitted; 146 147 unsigned int f_adc, f_tuner; 148 u32 pixelformat; 149 u32 buffersize; 150 unsigned int num_formats; 151 152 /* Controls */ 153 struct v4l2_ctrl_handler hdl; 154 struct v4l2_ctrl *bandwidth_auto; 155 struct v4l2_ctrl *bandwidth; 156 157 /* for sample rate calc */ 158 unsigned int sample; 159 unsigned int sample_measured; 160 unsigned long jiffies_next; 161 }; 162 163 /* write multiple hardware registers */ 164 static int rtl2832_sdr_wr(struct rtl2832_sdr_state *s, u8 reg, const u8 *val, 165 int len) 166 { 167 int ret; 168 #define MAX_WR_LEN 24 169 #define MAX_WR_XFER_LEN (MAX_WR_LEN + 1) 170 u8 buf[MAX_WR_XFER_LEN]; 171 struct i2c_msg msg[1] = { 172 { 173 .addr = s->cfg->i2c_addr, 174 .flags = 0, 175 .len = 1 + len, 176 .buf = buf, 177 } 178 }; 179 180 if (WARN_ON(len > MAX_WR_LEN)) 181 return -EINVAL; 182 183 buf[0] = reg; 184 memcpy(&buf[1], val, len); 185 186 ret = i2c_transfer(s->i2c, msg, 1); 187 if (ret == 1) { 188 ret = 0; 189 } else { 190 dev_err(&s->i2c->dev, 191 "%s: I2C wr failed=%d reg=%02x len=%d\n", 192 KBUILD_MODNAME, ret, reg, len); 193 ret = -EREMOTEIO; 194 } 195 return ret; 196 } 197 198 /* read multiple hardware registers */ 199 static int rtl2832_sdr_rd(struct rtl2832_sdr_state *s, u8 reg, u8 *val, int len) 200 { 201 int ret; 202 struct i2c_msg msg[2] = { 203 { 204 .addr = s->cfg->i2c_addr, 205 .flags = 0, 206 .len = 1, 207 .buf = ®, 208 }, { 209 .addr = s->cfg->i2c_addr, 210 .flags = I2C_M_RD, 211 .len = len, 212 .buf = val, 213 } 214 }; 215 216 ret = i2c_transfer(s->i2c, msg, 2); 217 if (ret == 2) { 218 ret = 0; 219 } else { 220 dev_err(&s->i2c->dev, 221 "%s: I2C rd failed=%d reg=%02x len=%d\n", 222 KBUILD_MODNAME, ret, reg, len); 223 ret = -EREMOTEIO; 224 } 225 return ret; 226 } 227 228 /* write multiple registers */ 229 static int rtl2832_sdr_wr_regs(struct rtl2832_sdr_state *s, u16 reg, 230 const u8 *val, int len) 231 { 232 int ret; 233 u8 reg2 = (reg >> 0) & 0xff; 234 u8 bank = (reg >> 8) & 0xff; 235 236 /* switch bank if needed */ 237 if (bank != s->bank) { 238 ret = rtl2832_sdr_wr(s, 0x00, &bank, 1); 239 if (ret) 240 return ret; 241 242 s->bank = bank; 243 } 244 245 return rtl2832_sdr_wr(s, reg2, val, len); 246 } 247 248 /* read multiple registers */ 249 static int rtl2832_sdr_rd_regs(struct rtl2832_sdr_state *s, u16 reg, u8 *val, 250 int len) 251 { 252 int ret; 253 u8 reg2 = (reg >> 0) & 0xff; 254 u8 bank = (reg >> 8) & 0xff; 255 256 /* switch bank if needed */ 257 if (bank != s->bank) { 258 ret = rtl2832_sdr_wr(s, 0x00, &bank, 1); 259 if (ret) 260 return ret; 261 262 s->bank = bank; 263 } 264 265 return rtl2832_sdr_rd(s, reg2, val, len); 266 } 267 268 /* write single register */ 269 static int rtl2832_sdr_wr_reg(struct rtl2832_sdr_state *s, u16 reg, u8 val) 270 { 271 return rtl2832_sdr_wr_regs(s, reg, &val, 1); 272 } 273 274 #if 0 275 /* read single register */ 276 static int rtl2832_sdr_rd_reg(struct rtl2832_sdr_state *s, u16 reg, u8 *val) 277 { 278 return rtl2832_sdr_rd_regs(s, reg, val, 1); 279 } 280 #endif 281 282 /* write single register with mask */ 283 static int rtl2832_sdr_wr_reg_mask(struct rtl2832_sdr_state *s, u16 reg, 284 u8 val, u8 mask) 285 { 286 int ret; 287 u8 tmp; 288 289 /* no need for read if whole reg is written */ 290 if (mask != 0xff) { 291 ret = rtl2832_sdr_rd_regs(s, reg, &tmp, 1); 292 if (ret) 293 return ret; 294 295 val &= mask; 296 tmp &= ~mask; 297 val |= tmp; 298 } 299 300 return rtl2832_sdr_wr_regs(s, reg, &val, 1); 301 } 302 303 #if 0 304 /* read single register with mask */ 305 static int rtl2832_sdr_rd_reg_mask(struct rtl2832_sdr_state *s, u16 reg, 306 u8 *val, u8 mask) 307 { 308 int ret, i; 309 u8 tmp; 310 311 ret = rtl2832_sdr_rd_regs(s, reg, &tmp, 1); 312 if (ret) 313 return ret; 314 315 tmp &= mask; 316 317 /* find position of the first bit */ 318 for (i = 0; i < 8; i++) { 319 if ((mask >> i) & 0x01) 320 break; 321 } 322 *val = tmp >> i; 323 324 return 0; 325 } 326 #endif 327 328 /* Private functions */ 329 static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf( 330 struct rtl2832_sdr_state *s) 331 { 332 unsigned long flags = 0; 333 struct rtl2832_sdr_frame_buf *buf = NULL; 334 335 spin_lock_irqsave(&s->queued_bufs_lock, flags); 336 if (list_empty(&s->queued_bufs)) 337 goto leave; 338 339 buf = list_entry(s->queued_bufs.next, 340 struct rtl2832_sdr_frame_buf, list); 341 list_del(&buf->list); 342 leave: 343 spin_unlock_irqrestore(&s->queued_bufs_lock, flags); 344 return buf; 345 } 346 347 static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_state *s, 348 void *dst, const u8 *src, unsigned int src_len) 349 { 350 unsigned int dst_len; 351 352 if (s->pixelformat == V4L2_SDR_FMT_CU8) { 353 /* native stream, no need to convert */ 354 memcpy(dst, src, src_len); 355 dst_len = src_len; 356 } else if (s->pixelformat == V4L2_SDR_FMT_CU16LE) { 357 /* convert u8 to u16 */ 358 unsigned int i; 359 u16 *u16dst = dst; 360 361 for (i = 0; i < src_len; i++) 362 *u16dst++ = (src[i] << 8) | (src[i] >> 0); 363 dst_len = 2 * src_len; 364 } else { 365 dst_len = 0; 366 } 367 368 /* calculate samping rate and output it in 10 seconds intervals */ 369 if (unlikely(time_is_before_jiffies(s->jiffies_next))) { 370 #define MSECS 10000UL 371 unsigned int samples = s->sample - s->sample_measured; 372 373 s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); 374 s->sample_measured = s->sample; 375 dev_dbg(&s->udev->dev, 376 "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", 377 src_len, samples, MSECS, 378 samples * 1000UL / MSECS); 379 } 380 381 /* total number of I+Q pairs */ 382 s->sample += src_len / 2; 383 384 return dst_len; 385 } 386 387 /* 388 * This gets called for the bulk stream pipe. This is done in interrupt 389 * time, so it has to be fast, not crash, and not stall. Neat. 390 */ 391 static void rtl2832_sdr_urb_complete(struct urb *urb) 392 { 393 struct rtl2832_sdr_state *s = urb->context; 394 struct rtl2832_sdr_frame_buf *fbuf; 395 396 dev_dbg_ratelimited(&s->udev->dev, 397 "%s: status=%d length=%d/%d errors=%d\n", 398 __func__, urb->status, urb->actual_length, 399 urb->transfer_buffer_length, urb->error_count); 400 401 switch (urb->status) { 402 case 0: /* success */ 403 case -ETIMEDOUT: /* NAK */ 404 break; 405 case -ECONNRESET: /* kill */ 406 case -ENOENT: 407 case -ESHUTDOWN: 408 return; 409 default: /* error */ 410 dev_err_ratelimited(&s->udev->dev, "urb failed=%d\n", 411 urb->status); 412 break; 413 } 414 415 if (likely(urb->actual_length > 0)) { 416 void *ptr; 417 unsigned int len; 418 /* get free framebuffer */ 419 fbuf = rtl2832_sdr_get_next_fill_buf(s); 420 if (unlikely(fbuf == NULL)) { 421 s->vb_full++; 422 dev_notice_ratelimited(&s->udev->dev, 423 "videobuf is full, %d packets dropped\n", 424 s->vb_full); 425 goto skip; 426 } 427 428 /* fill framebuffer */ 429 ptr = vb2_plane_vaddr(&fbuf->vb, 0); 430 len = rtl2832_sdr_convert_stream(s, ptr, urb->transfer_buffer, 431 urb->actual_length); 432 vb2_set_plane_payload(&fbuf->vb, 0, len); 433 v4l2_get_timestamp(&fbuf->vb.v4l2_buf.timestamp); 434 fbuf->vb.v4l2_buf.sequence = s->sequence++; 435 vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); 436 } 437 skip: 438 usb_submit_urb(urb, GFP_ATOMIC); 439 } 440 441 static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_state *s) 442 { 443 int i; 444 445 for (i = s->urbs_submitted - 1; i >= 0; i--) { 446 dev_dbg(&s->udev->dev, "%s: kill urb=%d\n", __func__, i); 447 /* stop the URB */ 448 usb_kill_urb(s->urb_list[i]); 449 } 450 s->urbs_submitted = 0; 451 452 return 0; 453 } 454 455 static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_state *s) 456 { 457 int i, ret; 458 459 for (i = 0; i < s->urbs_initialized; i++) { 460 dev_dbg(&s->udev->dev, "%s: submit urb=%d\n", __func__, i); 461 ret = usb_submit_urb(s->urb_list[i], GFP_ATOMIC); 462 if (ret) { 463 dev_err(&s->udev->dev, 464 "Could not submit urb no. %d - get them all back\n", 465 i); 466 rtl2832_sdr_kill_urbs(s); 467 return ret; 468 } 469 s->urbs_submitted++; 470 } 471 472 return 0; 473 } 474 475 static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_state *s) 476 { 477 if (s->flags & USB_STATE_URB_BUF) { 478 while (s->buf_num) { 479 s->buf_num--; 480 dev_dbg(&s->udev->dev, "%s: free buf=%d\n", 481 __func__, s->buf_num); 482 usb_free_coherent(s->udev, s->buf_size, 483 s->buf_list[s->buf_num], 484 s->dma_addr[s->buf_num]); 485 } 486 } 487 s->flags &= ~USB_STATE_URB_BUF; 488 489 return 0; 490 } 491 492 static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_state *s) 493 { 494 s->buf_num = 0; 495 s->buf_size = BULK_BUFFER_SIZE; 496 497 dev_dbg(&s->udev->dev, 498 "%s: all in all I will use %u bytes for streaming\n", 499 __func__, MAX_BULK_BUFS * BULK_BUFFER_SIZE); 500 501 for (s->buf_num = 0; s->buf_num < MAX_BULK_BUFS; s->buf_num++) { 502 s->buf_list[s->buf_num] = usb_alloc_coherent(s->udev, 503 BULK_BUFFER_SIZE, GFP_ATOMIC, 504 &s->dma_addr[s->buf_num]); 505 if (!s->buf_list[s->buf_num]) { 506 dev_dbg(&s->udev->dev, "%s: alloc buf=%d failed\n", 507 __func__, s->buf_num); 508 rtl2832_sdr_free_stream_bufs(s); 509 return -ENOMEM; 510 } 511 512 dev_dbg(&s->udev->dev, "%s: alloc buf=%d %p (dma %llu)\n", 513 __func__, s->buf_num, 514 s->buf_list[s->buf_num], 515 (long long)s->dma_addr[s->buf_num]); 516 s->flags |= USB_STATE_URB_BUF; 517 } 518 519 return 0; 520 } 521 522 static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_state *s) 523 { 524 int i; 525 526 rtl2832_sdr_kill_urbs(s); 527 528 for (i = s->urbs_initialized - 1; i >= 0; i--) { 529 if (s->urb_list[i]) { 530 dev_dbg(&s->udev->dev, "%s: free urb=%d\n", 531 __func__, i); 532 /* free the URBs */ 533 usb_free_urb(s->urb_list[i]); 534 } 535 } 536 s->urbs_initialized = 0; 537 538 return 0; 539 } 540 541 static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_state *s) 542 { 543 int i, j; 544 545 /* allocate the URBs */ 546 for (i = 0; i < MAX_BULK_BUFS; i++) { 547 dev_dbg(&s->udev->dev, "%s: alloc urb=%d\n", __func__, i); 548 s->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC); 549 if (!s->urb_list[i]) { 550 dev_dbg(&s->udev->dev, "%s: failed\n", __func__); 551 for (j = 0; j < i; j++) 552 usb_free_urb(s->urb_list[j]); 553 return -ENOMEM; 554 } 555 usb_fill_bulk_urb(s->urb_list[i], 556 s->udev, 557 usb_rcvbulkpipe(s->udev, 0x81), 558 s->buf_list[i], 559 BULK_BUFFER_SIZE, 560 rtl2832_sdr_urb_complete, s); 561 562 s->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 563 s->urb_list[i]->transfer_dma = s->dma_addr[i]; 564 s->urbs_initialized++; 565 } 566 567 return 0; 568 } 569 570 /* Must be called with vb_queue_lock hold */ 571 static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_state *s) 572 { 573 unsigned long flags = 0; 574 575 dev_dbg(&s->udev->dev, "%s:\n", __func__); 576 577 spin_lock_irqsave(&s->queued_bufs_lock, flags); 578 while (!list_empty(&s->queued_bufs)) { 579 struct rtl2832_sdr_frame_buf *buf; 580 581 buf = list_entry(s->queued_bufs.next, 582 struct rtl2832_sdr_frame_buf, list); 583 list_del(&buf->list); 584 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 585 } 586 spin_unlock_irqrestore(&s->queued_bufs_lock, flags); 587 } 588 589 /* The user yanked out the cable... */ 590 static void rtl2832_sdr_release_sec(struct dvb_frontend *fe) 591 { 592 struct rtl2832_sdr_state *s = fe->sec_priv; 593 594 dev_dbg(&s->udev->dev, "%s:\n", __func__); 595 596 mutex_lock(&s->vb_queue_lock); 597 mutex_lock(&s->v4l2_lock); 598 /* No need to keep the urbs around after disconnection */ 599 s->udev = NULL; 600 601 v4l2_device_disconnect(&s->v4l2_dev); 602 video_unregister_device(&s->vdev); 603 mutex_unlock(&s->v4l2_lock); 604 mutex_unlock(&s->vb_queue_lock); 605 606 v4l2_device_put(&s->v4l2_dev); 607 608 fe->sec_priv = NULL; 609 } 610 611 static int rtl2832_sdr_querycap(struct file *file, void *fh, 612 struct v4l2_capability *cap) 613 { 614 struct rtl2832_sdr_state *s = video_drvdata(file); 615 616 dev_dbg(&s->udev->dev, "%s:\n", __func__); 617 618 strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); 619 strlcpy(cap->card, s->vdev.name, sizeof(cap->card)); 620 usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info)); 621 cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | 622 V4L2_CAP_READWRITE | V4L2_CAP_TUNER; 623 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; 624 return 0; 625 } 626 627 /* Videobuf2 operations */ 628 static int rtl2832_sdr_queue_setup(struct vb2_queue *vq, 629 const struct v4l2_format *fmt, unsigned int *nbuffers, 630 unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) 631 { 632 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vq); 633 634 dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers); 635 636 /* Need at least 8 buffers */ 637 if (vq->num_buffers + *nbuffers < 8) 638 *nbuffers = 8 - vq->num_buffers; 639 *nplanes = 1; 640 sizes[0] = PAGE_ALIGN(s->buffersize); 641 dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n", 642 __func__, *nbuffers, sizes[0]); 643 return 0; 644 } 645 646 static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) 647 { 648 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vb->vb2_queue); 649 650 /* Don't allow queing new buffers after device disconnection */ 651 if (!s->udev) 652 return -ENODEV; 653 654 return 0; 655 } 656 657 static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) 658 { 659 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vb->vb2_queue); 660 struct rtl2832_sdr_frame_buf *buf = 661 container_of(vb, struct rtl2832_sdr_frame_buf, vb); 662 unsigned long flags = 0; 663 664 /* Check the device has not disconnected between prep and queuing */ 665 if (!s->udev) { 666 vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 667 return; 668 } 669 670 spin_lock_irqsave(&s->queued_bufs_lock, flags); 671 list_add_tail(&buf->list, &s->queued_bufs); 672 spin_unlock_irqrestore(&s->queued_bufs_lock, flags); 673 } 674 675 static int rtl2832_sdr_set_adc(struct rtl2832_sdr_state *s) 676 { 677 struct dvb_frontend *fe = s->fe; 678 int ret; 679 unsigned int f_sr, f_if; 680 u8 buf[4], u8tmp1, u8tmp2; 681 u64 u64tmp; 682 u32 u32tmp; 683 684 dev_dbg(&s->udev->dev, "%s: f_adc=%u\n", __func__, s->f_adc); 685 686 if (!test_bit(POWER_ON, &s->flags)) 687 return 0; 688 689 if (s->f_adc == 0) 690 return 0; 691 692 f_sr = s->f_adc; 693 694 ret = rtl2832_sdr_wr_regs(s, 0x13e, "\x00\x00", 2); 695 if (ret) 696 goto err; 697 698 ret = rtl2832_sdr_wr_regs(s, 0x115, "\x00\x00\x00\x00", 4); 699 if (ret) 700 goto err; 701 702 /* get IF from tuner */ 703 if (fe->ops.tuner_ops.get_if_frequency) 704 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); 705 else 706 ret = -EINVAL; 707 708 if (ret) 709 goto err; 710 711 /* program IF */ 712 u64tmp = f_if % s->cfg->xtal; 713 u64tmp *= 0x400000; 714 u64tmp = div_u64(u64tmp, s->cfg->xtal); 715 u64tmp = -u64tmp; 716 u32tmp = u64tmp & 0x3fffff; 717 718 dev_dbg(&s->udev->dev, "%s: f_if=%u if_ctl=%08x\n", 719 __func__, f_if, u32tmp); 720 721 buf[0] = (u32tmp >> 16) & 0xff; 722 buf[1] = (u32tmp >> 8) & 0xff; 723 buf[2] = (u32tmp >> 0) & 0xff; 724 725 ret = rtl2832_sdr_wr_regs(s, 0x119, buf, 3); 726 if (ret) 727 goto err; 728 729 /* BB / IF mode */ 730 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ 731 if (f_if) { 732 u8tmp1 = 0x1a; /* disable Zero-IF */ 733 u8tmp2 = 0x8d; /* enable ADC I */ 734 } else { 735 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ 736 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ 737 } 738 739 ret = rtl2832_sdr_wr_reg(s, 0x1b1, u8tmp1); 740 if (ret) 741 goto err; 742 743 ret = rtl2832_sdr_wr_reg(s, 0x008, u8tmp2); 744 if (ret) 745 goto err; 746 747 ret = rtl2832_sdr_wr_reg(s, 0x006, 0x80); 748 if (ret) 749 goto err; 750 751 /* program sampling rate (resampling down) */ 752 u32tmp = div_u64(s->cfg->xtal * 0x400000ULL, f_sr * 4U); 753 u32tmp <<= 2; 754 buf[0] = (u32tmp >> 24) & 0xff; 755 buf[1] = (u32tmp >> 16) & 0xff; 756 buf[2] = (u32tmp >> 8) & 0xff; 757 buf[3] = (u32tmp >> 0) & 0xff; 758 ret = rtl2832_sdr_wr_regs(s, 0x19f, buf, 4); 759 if (ret) 760 goto err; 761 762 /* low-pass filter */ 763 ret = rtl2832_sdr_wr_regs(s, 0x11c, 764 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5", 765 20); 766 if (ret) 767 goto err; 768 769 ret = rtl2832_sdr_wr_regs(s, 0x017, "\x11\x10", 2); 770 if (ret) 771 goto err; 772 773 /* mode */ 774 ret = rtl2832_sdr_wr_regs(s, 0x019, "\x05", 1); 775 if (ret) 776 goto err; 777 778 ret = rtl2832_sdr_wr_regs(s, 0x01a, "\x1b\x16\x0d\x06\x01\xff", 6); 779 if (ret) 780 goto err; 781 782 /* FSM */ 783 ret = rtl2832_sdr_wr_regs(s, 0x192, "\x00\xf0\x0f", 3); 784 if (ret) 785 goto err; 786 787 /* PID filter */ 788 ret = rtl2832_sdr_wr_regs(s, 0x061, "\x60", 1); 789 if (ret) 790 goto err; 791 792 /* used RF tuner based settings */ 793 switch (s->cfg->tuner) { 794 case RTL2832_TUNER_E4000: 795 ret = rtl2832_sdr_wr_regs(s, 0x112, "\x5a", 1); 796 ret = rtl2832_sdr_wr_regs(s, 0x102, "\x40", 1); 797 ret = rtl2832_sdr_wr_regs(s, 0x103, "\x5a", 1); 798 ret = rtl2832_sdr_wr_regs(s, 0x1c7, "\x30", 1); 799 ret = rtl2832_sdr_wr_regs(s, 0x104, "\xd0", 1); 800 ret = rtl2832_sdr_wr_regs(s, 0x105, "\xbe", 1); 801 ret = rtl2832_sdr_wr_regs(s, 0x1c8, "\x18", 1); 802 ret = rtl2832_sdr_wr_regs(s, 0x106, "\x35", 1); 803 ret = rtl2832_sdr_wr_regs(s, 0x1c9, "\x21", 1); 804 ret = rtl2832_sdr_wr_regs(s, 0x1ca, "\x21", 1); 805 ret = rtl2832_sdr_wr_regs(s, 0x1cb, "\x00", 1); 806 ret = rtl2832_sdr_wr_regs(s, 0x107, "\x40", 1); 807 ret = rtl2832_sdr_wr_regs(s, 0x1cd, "\x10", 1); 808 ret = rtl2832_sdr_wr_regs(s, 0x1ce, "\x10", 1); 809 ret = rtl2832_sdr_wr_regs(s, 0x108, "\x80", 1); 810 ret = rtl2832_sdr_wr_regs(s, 0x109, "\x7f", 1); 811 ret = rtl2832_sdr_wr_regs(s, 0x10a, "\x80", 1); 812 ret = rtl2832_sdr_wr_regs(s, 0x10b, "\x7f", 1); 813 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1); 814 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1); 815 ret = rtl2832_sdr_wr_regs(s, 0x011, "\xd4", 1); 816 ret = rtl2832_sdr_wr_regs(s, 0x1e5, "\xf0", 1); 817 ret = rtl2832_sdr_wr_regs(s, 0x1d9, "\x00", 1); 818 ret = rtl2832_sdr_wr_regs(s, 0x1db, "\x00", 1); 819 ret = rtl2832_sdr_wr_regs(s, 0x1dd, "\x14", 1); 820 ret = rtl2832_sdr_wr_regs(s, 0x1de, "\xec", 1); 821 ret = rtl2832_sdr_wr_regs(s, 0x1d8, "\x0c", 1); 822 ret = rtl2832_sdr_wr_regs(s, 0x1e6, "\x02", 1); 823 ret = rtl2832_sdr_wr_regs(s, 0x1d7, "\x09", 1); 824 ret = rtl2832_sdr_wr_regs(s, 0x00d, "\x83", 1); 825 ret = rtl2832_sdr_wr_regs(s, 0x010, "\x49", 1); 826 ret = rtl2832_sdr_wr_regs(s, 0x00d, "\x87", 1); 827 ret = rtl2832_sdr_wr_regs(s, 0x00d, "\x85", 1); 828 ret = rtl2832_sdr_wr_regs(s, 0x013, "\x02", 1); 829 break; 830 case RTL2832_TUNER_FC0012: 831 case RTL2832_TUNER_FC0013: 832 ret = rtl2832_sdr_wr_regs(s, 0x112, "\x5a", 1); 833 ret = rtl2832_sdr_wr_regs(s, 0x102, "\x40", 1); 834 ret = rtl2832_sdr_wr_regs(s, 0x103, "\x5a", 1); 835 ret = rtl2832_sdr_wr_regs(s, 0x1c7, "\x2c", 1); 836 ret = rtl2832_sdr_wr_regs(s, 0x104, "\xcc", 1); 837 ret = rtl2832_sdr_wr_regs(s, 0x105, "\xbe", 1); 838 ret = rtl2832_sdr_wr_regs(s, 0x1c8, "\x16", 1); 839 ret = rtl2832_sdr_wr_regs(s, 0x106, "\x35", 1); 840 ret = rtl2832_sdr_wr_regs(s, 0x1c9, "\x21", 1); 841 ret = rtl2832_sdr_wr_regs(s, 0x1ca, "\x21", 1); 842 ret = rtl2832_sdr_wr_regs(s, 0x1cb, "\x00", 1); 843 ret = rtl2832_sdr_wr_regs(s, 0x107, "\x40", 1); 844 ret = rtl2832_sdr_wr_regs(s, 0x1cd, "\x10", 1); 845 ret = rtl2832_sdr_wr_regs(s, 0x1ce, "\x10", 1); 846 ret = rtl2832_sdr_wr_regs(s, 0x108, "\x80", 1); 847 ret = rtl2832_sdr_wr_regs(s, 0x109, "\x7f", 1); 848 ret = rtl2832_sdr_wr_regs(s, 0x10a, "\x80", 1); 849 ret = rtl2832_sdr_wr_regs(s, 0x10b, "\x7f", 1); 850 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1); 851 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1); 852 ret = rtl2832_sdr_wr_regs(s, 0x011, "\xe9\xbf", 2); 853 ret = rtl2832_sdr_wr_regs(s, 0x1e5, "\xf0", 1); 854 ret = rtl2832_sdr_wr_regs(s, 0x1d9, "\x00", 1); 855 ret = rtl2832_sdr_wr_regs(s, 0x1db, "\x00", 1); 856 ret = rtl2832_sdr_wr_regs(s, 0x1dd, "\x11", 1); 857 ret = rtl2832_sdr_wr_regs(s, 0x1de, "\xef", 1); 858 ret = rtl2832_sdr_wr_regs(s, 0x1d8, "\x0c", 1); 859 ret = rtl2832_sdr_wr_regs(s, 0x1e6, "\x02", 1); 860 ret = rtl2832_sdr_wr_regs(s, 0x1d7, "\x09", 1); 861 break; 862 case RTL2832_TUNER_R820T: 863 ret = rtl2832_sdr_wr_regs(s, 0x112, "\x5a", 1); 864 ret = rtl2832_sdr_wr_regs(s, 0x102, "\x40", 1); 865 ret = rtl2832_sdr_wr_regs(s, 0x115, "\x01", 1); 866 ret = rtl2832_sdr_wr_regs(s, 0x103, "\x80", 1); 867 ret = rtl2832_sdr_wr_regs(s, 0x1c7, "\x24", 1); 868 ret = rtl2832_sdr_wr_regs(s, 0x104, "\xcc", 1); 869 ret = rtl2832_sdr_wr_regs(s, 0x105, "\xbe", 1); 870 ret = rtl2832_sdr_wr_regs(s, 0x1c8, "\x14", 1); 871 ret = rtl2832_sdr_wr_regs(s, 0x106, "\x35", 1); 872 ret = rtl2832_sdr_wr_regs(s, 0x1c9, "\x21", 1); 873 ret = rtl2832_sdr_wr_regs(s, 0x1ca, "\x21", 1); 874 ret = rtl2832_sdr_wr_regs(s, 0x1cb, "\x00", 1); 875 ret = rtl2832_sdr_wr_regs(s, 0x107, "\x40", 1); 876 ret = rtl2832_sdr_wr_regs(s, 0x1cd, "\x10", 1); 877 ret = rtl2832_sdr_wr_regs(s, 0x1ce, "\x10", 1); 878 ret = rtl2832_sdr_wr_regs(s, 0x108, "\x80", 1); 879 ret = rtl2832_sdr_wr_regs(s, 0x109, "\x7f", 1); 880 ret = rtl2832_sdr_wr_regs(s, 0x10a, "\x80", 1); 881 ret = rtl2832_sdr_wr_regs(s, 0x10b, "\x7f", 1); 882 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1); 883 ret = rtl2832_sdr_wr_regs(s, 0x00e, "\xfc", 1); 884 ret = rtl2832_sdr_wr_regs(s, 0x011, "\xf4", 1); 885 break; 886 default: 887 dev_notice(&s->udev->dev, "Unsupported tuner\n"); 888 } 889 890 /* software reset */ 891 ret = rtl2832_sdr_wr_reg_mask(s, 0x101, 0x04, 0x04); 892 if (ret) 893 goto err; 894 895 ret = rtl2832_sdr_wr_reg_mask(s, 0x101, 0x00, 0x04); 896 if (ret) 897 goto err; 898 err: 899 return ret; 900 }; 901 902 static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_state *s) 903 { 904 int ret; 905 906 dev_dbg(&s->udev->dev, "%s:\n", __func__); 907 908 /* PID filter */ 909 ret = rtl2832_sdr_wr_regs(s, 0x061, "\xe0", 1); 910 if (ret) 911 goto err; 912 913 /* mode */ 914 ret = rtl2832_sdr_wr_regs(s, 0x019, "\x20", 1); 915 if (ret) 916 goto err; 917 918 ret = rtl2832_sdr_wr_regs(s, 0x017, "\x11\x10", 2); 919 if (ret) 920 goto err; 921 922 /* FSM */ 923 ret = rtl2832_sdr_wr_regs(s, 0x192, "\x00\x0f\xff", 3); 924 if (ret) 925 goto err; 926 927 ret = rtl2832_sdr_wr_regs(s, 0x13e, "\x40\x00", 2); 928 if (ret) 929 goto err; 930 931 ret = rtl2832_sdr_wr_regs(s, 0x115, "\x06\x3f\xce\xcc", 4); 932 if (ret) 933 goto err; 934 err: 935 return; 936 }; 937 938 static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_state *s) 939 { 940 struct dvb_frontend *fe = s->fe; 941 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 942 struct v4l2_ctrl *bandwidth_auto; 943 struct v4l2_ctrl *bandwidth; 944 945 /* 946 * tuner RF (Hz) 947 */ 948 if (s->f_tuner == 0) 949 return 0; 950 951 /* 952 * bandwidth (Hz) 953 */ 954 bandwidth_auto = v4l2_ctrl_find(&s->hdl, 955 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); 956 bandwidth = v4l2_ctrl_find(&s->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); 957 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { 958 c->bandwidth_hz = s->f_adc; 959 v4l2_ctrl_s_ctrl(bandwidth, s->f_adc); 960 } else { 961 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth); 962 } 963 964 c->frequency = s->f_tuner; 965 c->delivery_system = SYS_DVBT; 966 967 dev_dbg(&s->udev->dev, "%s: frequency=%u bandwidth=%d\n", 968 __func__, c->frequency, c->bandwidth_hz); 969 970 if (!test_bit(POWER_ON, &s->flags)) 971 return 0; 972 973 if (fe->ops.tuner_ops.set_params) 974 fe->ops.tuner_ops.set_params(fe); 975 976 return 0; 977 }; 978 979 static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_state *s) 980 { 981 struct dvb_frontend *fe = s->fe; 982 983 dev_dbg(&s->udev->dev, "%s:\n", __func__); 984 985 if (fe->ops.tuner_ops.init) 986 fe->ops.tuner_ops.init(fe); 987 988 return 0; 989 }; 990 991 static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_state *s) 992 { 993 struct dvb_frontend *fe = s->fe; 994 995 dev_dbg(&s->udev->dev, "%s:\n", __func__); 996 997 if (fe->ops.tuner_ops.sleep) 998 fe->ops.tuner_ops.sleep(fe); 999 1000 return; 1001 }; 1002 1003 static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) 1004 { 1005 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vq); 1006 int ret; 1007 1008 dev_dbg(&s->udev->dev, "%s:\n", __func__); 1009 1010 if (!s->udev) 1011 return -ENODEV; 1012 1013 if (mutex_lock_interruptible(&s->v4l2_lock)) 1014 return -ERESTARTSYS; 1015 1016 if (s->d->props->power_ctrl) 1017 s->d->props->power_ctrl(s->d, 1); 1018 1019 set_bit(POWER_ON, &s->flags); 1020 1021 ret = rtl2832_sdr_set_tuner(s); 1022 if (ret) 1023 goto err; 1024 1025 ret = rtl2832_sdr_set_tuner_freq(s); 1026 if (ret) 1027 goto err; 1028 1029 ret = rtl2832_sdr_set_adc(s); 1030 if (ret) 1031 goto err; 1032 1033 ret = rtl2832_sdr_alloc_stream_bufs(s); 1034 if (ret) 1035 goto err; 1036 1037 ret = rtl2832_sdr_alloc_urbs(s); 1038 if (ret) 1039 goto err; 1040 1041 s->sequence = 0; 1042 1043 ret = rtl2832_sdr_submit_urbs(s); 1044 if (ret) 1045 goto err; 1046 1047 err: 1048 mutex_unlock(&s->v4l2_lock); 1049 1050 return ret; 1051 } 1052 1053 static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) 1054 { 1055 struct rtl2832_sdr_state *s = vb2_get_drv_priv(vq); 1056 1057 dev_dbg(&s->udev->dev, "%s:\n", __func__); 1058 1059 mutex_lock(&s->v4l2_lock); 1060 1061 rtl2832_sdr_kill_urbs(s); 1062 rtl2832_sdr_free_urbs(s); 1063 rtl2832_sdr_free_stream_bufs(s); 1064 rtl2832_sdr_cleanup_queued_bufs(s); 1065 rtl2832_sdr_unset_adc(s); 1066 rtl2832_sdr_unset_tuner(s); 1067 1068 clear_bit(POWER_ON, &s->flags); 1069 1070 if (s->d->props->power_ctrl) 1071 s->d->props->power_ctrl(s->d, 0); 1072 1073 mutex_unlock(&s->v4l2_lock); 1074 } 1075 1076 static struct vb2_ops rtl2832_sdr_vb2_ops = { 1077 .queue_setup = rtl2832_sdr_queue_setup, 1078 .buf_prepare = rtl2832_sdr_buf_prepare, 1079 .buf_queue = rtl2832_sdr_buf_queue, 1080 .start_streaming = rtl2832_sdr_start_streaming, 1081 .stop_streaming = rtl2832_sdr_stop_streaming, 1082 .wait_prepare = vb2_ops_wait_prepare, 1083 .wait_finish = vb2_ops_wait_finish, 1084 }; 1085 1086 static int rtl2832_sdr_g_tuner(struct file *file, void *priv, 1087 struct v4l2_tuner *v) 1088 { 1089 struct rtl2832_sdr_state *s = video_drvdata(file); 1090 1091 dev_dbg(&s->udev->dev, "%s: index=%d type=%d\n", 1092 __func__, v->index, v->type); 1093 1094 if (v->index == 0) { 1095 strlcpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name)); 1096 v->type = V4L2_TUNER_ADC; 1097 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 1098 v->rangelow = 300000; 1099 v->rangehigh = 3200000; 1100 } else if (v->index == 1) { 1101 strlcpy(v->name, "RF: <unknown>", sizeof(v->name)); 1102 v->type = V4L2_TUNER_RF; 1103 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; 1104 v->rangelow = 50000000; 1105 v->rangehigh = 2000000000; 1106 } else { 1107 return -EINVAL; 1108 } 1109 1110 return 0; 1111 } 1112 1113 static int rtl2832_sdr_s_tuner(struct file *file, void *priv, 1114 const struct v4l2_tuner *v) 1115 { 1116 struct rtl2832_sdr_state *s = video_drvdata(file); 1117 1118 dev_dbg(&s->udev->dev, "%s:\n", __func__); 1119 1120 if (v->index > 1) 1121 return -EINVAL; 1122 return 0; 1123 } 1124 1125 static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv, 1126 struct v4l2_frequency_band *band) 1127 { 1128 struct rtl2832_sdr_state *s = video_drvdata(file); 1129 1130 dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d index=%d\n", 1131 __func__, band->tuner, band->type, band->index); 1132 1133 if (band->tuner == 0) { 1134 if (band->index >= ARRAY_SIZE(bands_adc)) 1135 return -EINVAL; 1136 1137 *band = bands_adc[band->index]; 1138 } else if (band->tuner == 1) { 1139 if (band->index >= ARRAY_SIZE(bands_fm)) 1140 return -EINVAL; 1141 1142 *band = bands_fm[band->index]; 1143 } else { 1144 return -EINVAL; 1145 } 1146 1147 return 0; 1148 } 1149 1150 static int rtl2832_sdr_g_frequency(struct file *file, void *priv, 1151 struct v4l2_frequency *f) 1152 { 1153 struct rtl2832_sdr_state *s = video_drvdata(file); 1154 int ret = 0; 1155 1156 dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d\n", 1157 __func__, f->tuner, f->type); 1158 1159 if (f->tuner == 0) { 1160 f->frequency = s->f_adc; 1161 f->type = V4L2_TUNER_ADC; 1162 } else if (f->tuner == 1) { 1163 f->frequency = s->f_tuner; 1164 f->type = V4L2_TUNER_RF; 1165 } else { 1166 return -EINVAL; 1167 } 1168 1169 return ret; 1170 } 1171 1172 static int rtl2832_sdr_s_frequency(struct file *file, void *priv, 1173 const struct v4l2_frequency *f) 1174 { 1175 struct rtl2832_sdr_state *s = video_drvdata(file); 1176 int ret, band; 1177 1178 dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d frequency=%u\n", 1179 __func__, f->tuner, f->type, f->frequency); 1180 1181 /* ADC band midpoints */ 1182 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) 1183 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) 1184 1185 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { 1186 if (f->frequency < BAND_ADC_0) 1187 band = 0; 1188 else if (f->frequency < BAND_ADC_1) 1189 band = 1; 1190 else 1191 band = 2; 1192 1193 s->f_adc = clamp_t(unsigned int, f->frequency, 1194 bands_adc[band].rangelow, 1195 bands_adc[band].rangehigh); 1196 1197 dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n", 1198 __func__, s->f_adc); 1199 ret = rtl2832_sdr_set_adc(s); 1200 } else if (f->tuner == 1) { 1201 s->f_tuner = clamp_t(unsigned int, f->frequency, 1202 bands_fm[0].rangelow, 1203 bands_fm[0].rangehigh); 1204 dev_dbg(&s->udev->dev, "%s: RF frequency=%u Hz\n", 1205 __func__, f->frequency); 1206 1207 ret = rtl2832_sdr_set_tuner_freq(s); 1208 } else { 1209 ret = -EINVAL; 1210 } 1211 1212 return ret; 1213 } 1214 1215 static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, 1216 struct v4l2_fmtdesc *f) 1217 { 1218 struct rtl2832_sdr_state *s = video_drvdata(file); 1219 1220 dev_dbg(&s->udev->dev, "%s:\n", __func__); 1221 1222 if (f->index >= s->num_formats) 1223 return -EINVAL; 1224 1225 strlcpy(f->description, formats[f->index].name, sizeof(f->description)); 1226 f->pixelformat = formats[f->index].pixelformat; 1227 1228 return 0; 1229 } 1230 1231 static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, 1232 struct v4l2_format *f) 1233 { 1234 struct rtl2832_sdr_state *s = video_drvdata(file); 1235 1236 dev_dbg(&s->udev->dev, "%s:\n", __func__); 1237 1238 f->fmt.sdr.pixelformat = s->pixelformat; 1239 f->fmt.sdr.buffersize = s->buffersize; 1240 1241 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1242 1243 return 0; 1244 } 1245 1246 static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, 1247 struct v4l2_format *f) 1248 { 1249 struct rtl2832_sdr_state *s = video_drvdata(file); 1250 struct vb2_queue *q = &s->vb_queue; 1251 int i; 1252 1253 dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, 1254 (char *)&f->fmt.sdr.pixelformat); 1255 1256 if (vb2_is_busy(q)) 1257 return -EBUSY; 1258 1259 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1260 for (i = 0; i < s->num_formats; i++) { 1261 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1262 s->pixelformat = formats[i].pixelformat; 1263 s->buffersize = formats[i].buffersize; 1264 f->fmt.sdr.buffersize = formats[i].buffersize; 1265 return 0; 1266 } 1267 } 1268 1269 s->pixelformat = formats[0].pixelformat; 1270 s->buffersize = formats[0].buffersize; 1271 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1272 f->fmt.sdr.buffersize = formats[0].buffersize; 1273 1274 return 0; 1275 } 1276 1277 static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, 1278 struct v4l2_format *f) 1279 { 1280 struct rtl2832_sdr_state *s = video_drvdata(file); 1281 int i; 1282 1283 dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, 1284 (char *)&f->fmt.sdr.pixelformat); 1285 1286 memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); 1287 for (i = 0; i < s->num_formats; i++) { 1288 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { 1289 f->fmt.sdr.buffersize = formats[i].buffersize; 1290 return 0; 1291 } 1292 } 1293 1294 f->fmt.sdr.pixelformat = formats[0].pixelformat; 1295 f->fmt.sdr.buffersize = formats[0].buffersize; 1296 1297 return 0; 1298 } 1299 1300 static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = { 1301 .vidioc_querycap = rtl2832_sdr_querycap, 1302 1303 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap, 1304 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap, 1305 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap, 1306 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap, 1307 1308 .vidioc_reqbufs = vb2_ioctl_reqbufs, 1309 .vidioc_create_bufs = vb2_ioctl_create_bufs, 1310 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 1311 .vidioc_querybuf = vb2_ioctl_querybuf, 1312 .vidioc_qbuf = vb2_ioctl_qbuf, 1313 .vidioc_dqbuf = vb2_ioctl_dqbuf, 1314 1315 .vidioc_streamon = vb2_ioctl_streamon, 1316 .vidioc_streamoff = vb2_ioctl_streamoff, 1317 1318 .vidioc_g_tuner = rtl2832_sdr_g_tuner, 1319 .vidioc_s_tuner = rtl2832_sdr_s_tuner, 1320 1321 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands, 1322 .vidioc_g_frequency = rtl2832_sdr_g_frequency, 1323 .vidioc_s_frequency = rtl2832_sdr_s_frequency, 1324 1325 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 1326 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1327 .vidioc_log_status = v4l2_ctrl_log_status, 1328 }; 1329 1330 static const struct v4l2_file_operations rtl2832_sdr_fops = { 1331 .owner = THIS_MODULE, 1332 .open = v4l2_fh_open, 1333 .release = vb2_fop_release, 1334 .read = vb2_fop_read, 1335 .poll = vb2_fop_poll, 1336 .mmap = vb2_fop_mmap, 1337 .unlocked_ioctl = video_ioctl2, 1338 }; 1339 1340 static struct video_device rtl2832_sdr_template = { 1341 .name = "Realtek RTL2832 SDR", 1342 .release = video_device_release_empty, 1343 .fops = &rtl2832_sdr_fops, 1344 .ioctl_ops = &rtl2832_sdr_ioctl_ops, 1345 }; 1346 1347 static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl) 1348 { 1349 struct rtl2832_sdr_state *s = 1350 container_of(ctrl->handler, struct rtl2832_sdr_state, 1351 hdl); 1352 struct dvb_frontend *fe = s->fe; 1353 struct dtv_frontend_properties *c = &fe->dtv_property_cache; 1354 int ret; 1355 1356 dev_dbg(&s->udev->dev, 1357 "%s: id=%d name=%s val=%d min=%lld max=%lld step=%lld\n", 1358 __func__, ctrl->id, ctrl->name, ctrl->val, 1359 ctrl->minimum, ctrl->maximum, ctrl->step); 1360 1361 switch (ctrl->id) { 1362 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: 1363 case V4L2_CID_RF_TUNER_BANDWIDTH: 1364 /* TODO: these controls should be moved to tuner drivers */ 1365 if (s->bandwidth_auto->val) { 1366 /* Round towards the closest legal value */ 1367 s32 val = s->f_adc + div_u64(s->bandwidth->step, 2); 1368 u32 offset; 1369 1370 val = clamp_t(s32, val, s->bandwidth->minimum, 1371 s->bandwidth->maximum); 1372 offset = val - s->bandwidth->minimum; 1373 offset = s->bandwidth->step * 1374 div_u64(offset, s->bandwidth->step); 1375 s->bandwidth->val = s->bandwidth->minimum + offset; 1376 } 1377 c->bandwidth_hz = s->bandwidth->val; 1378 1379 if (!test_bit(POWER_ON, &s->flags)) 1380 return 0; 1381 1382 if (fe->ops.tuner_ops.set_params) 1383 ret = fe->ops.tuner_ops.set_params(fe); 1384 else 1385 ret = 0; 1386 break; 1387 default: 1388 ret = -EINVAL; 1389 } 1390 1391 return ret; 1392 } 1393 1394 static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { 1395 .s_ctrl = rtl2832_sdr_s_ctrl, 1396 }; 1397 1398 static void rtl2832_sdr_video_release(struct v4l2_device *v) 1399 { 1400 struct rtl2832_sdr_state *s = 1401 container_of(v, struct rtl2832_sdr_state, v4l2_dev); 1402 1403 v4l2_ctrl_handler_free(&s->hdl); 1404 v4l2_device_unregister(&s->v4l2_dev); 1405 kfree(s); 1406 } 1407 1408 struct dvb_frontend *rtl2832_sdr_attach(struct dvb_frontend *fe, 1409 struct i2c_adapter *i2c, const struct rtl2832_config *cfg, 1410 struct v4l2_subdev *sd) 1411 { 1412 int ret; 1413 struct rtl2832_sdr_state *s; 1414 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops; 1415 struct dvb_usb_device *d = i2c_get_adapdata(i2c); 1416 1417 s = kzalloc(sizeof(struct rtl2832_sdr_state), GFP_KERNEL); 1418 if (s == NULL) { 1419 dev_err(&d->udev->dev, 1420 "Could not allocate memory for rtl2832_sdr_state\n"); 1421 return NULL; 1422 } 1423 1424 /* setup the state */ 1425 s->fe = fe; 1426 s->d = d; 1427 s->udev = d->udev; 1428 s->i2c = i2c; 1429 s->cfg = cfg; 1430 s->f_adc = bands_adc[0].rangelow; 1431 s->f_tuner = bands_fm[0].rangelow; 1432 s->pixelformat = formats[0].pixelformat; 1433 s->buffersize = formats[0].buffersize; 1434 s->num_formats = NUM_FORMATS; 1435 if (rtl2832_sdr_emulated_fmt == false) 1436 s->num_formats -= 1; 1437 1438 mutex_init(&s->v4l2_lock); 1439 mutex_init(&s->vb_queue_lock); 1440 spin_lock_init(&s->queued_bufs_lock); 1441 INIT_LIST_HEAD(&s->queued_bufs); 1442 1443 /* Init videobuf2 queue structure */ 1444 s->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; 1445 s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; 1446 s->vb_queue.drv_priv = s; 1447 s->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf); 1448 s->vb_queue.ops = &rtl2832_sdr_vb2_ops; 1449 s->vb_queue.mem_ops = &vb2_vmalloc_memops; 1450 s->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1451 ret = vb2_queue_init(&s->vb_queue); 1452 if (ret) { 1453 dev_err(&s->udev->dev, "Could not initialize vb2 queue\n"); 1454 goto err_free_mem; 1455 } 1456 1457 /* Register controls */ 1458 switch (s->cfg->tuner) { 1459 case RTL2832_TUNER_E4000: 1460 v4l2_ctrl_handler_init(&s->hdl, 9); 1461 if (sd) 1462 v4l2_ctrl_add_handler(&s->hdl, sd->ctrl_handler, NULL); 1463 break; 1464 case RTL2832_TUNER_R820T: 1465 v4l2_ctrl_handler_init(&s->hdl, 2); 1466 s->bandwidth_auto = v4l2_ctrl_new_std(&s->hdl, ops, 1467 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1468 0, 1, 1, 1); 1469 s->bandwidth = v4l2_ctrl_new_std(&s->hdl, ops, 1470 V4L2_CID_RF_TUNER_BANDWIDTH, 1471 0, 8000000, 100000, 0); 1472 v4l2_ctrl_auto_cluster(2, &s->bandwidth_auto, 0, false); 1473 break; 1474 case RTL2832_TUNER_FC0012: 1475 case RTL2832_TUNER_FC0013: 1476 v4l2_ctrl_handler_init(&s->hdl, 2); 1477 s->bandwidth_auto = v4l2_ctrl_new_std(&s->hdl, ops, 1478 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 1479 0, 1, 1, 1); 1480 s->bandwidth = v4l2_ctrl_new_std(&s->hdl, ops, 1481 V4L2_CID_RF_TUNER_BANDWIDTH, 1482 6000000, 8000000, 1000000, 1483 6000000); 1484 v4l2_ctrl_auto_cluster(2, &s->bandwidth_auto, 0, false); 1485 break; 1486 default: 1487 v4l2_ctrl_handler_init(&s->hdl, 0); 1488 dev_notice(&s->udev->dev, "%s: Unsupported tuner\n", 1489 KBUILD_MODNAME); 1490 goto err_free_controls; 1491 } 1492 1493 if (s->hdl.error) { 1494 ret = s->hdl.error; 1495 dev_err(&s->udev->dev, "Could not initialize controls\n"); 1496 goto err_free_controls; 1497 } 1498 1499 /* Init video_device structure */ 1500 s->vdev = rtl2832_sdr_template; 1501 s->vdev.queue = &s->vb_queue; 1502 s->vdev.queue->lock = &s->vb_queue_lock; 1503 video_set_drvdata(&s->vdev, s); 1504 1505 /* Register the v4l2_device structure */ 1506 s->v4l2_dev.release = rtl2832_sdr_video_release; 1507 ret = v4l2_device_register(&s->udev->dev, &s->v4l2_dev); 1508 if (ret) { 1509 dev_err(&s->udev->dev, 1510 "Failed to register v4l2-device (%d)\n", ret); 1511 goto err_free_controls; 1512 } 1513 1514 s->v4l2_dev.ctrl_handler = &s->hdl; 1515 s->vdev.v4l2_dev = &s->v4l2_dev; 1516 s->vdev.lock = &s->v4l2_lock; 1517 s->vdev.vfl_dir = VFL_DIR_RX; 1518 1519 ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1); 1520 if (ret) { 1521 dev_err(&s->udev->dev, 1522 "Failed to register as video device (%d)\n", 1523 ret); 1524 goto err_unregister_v4l2_dev; 1525 } 1526 dev_info(&s->udev->dev, "Registered as %s\n", 1527 video_device_node_name(&s->vdev)); 1528 1529 fe->sec_priv = s; 1530 fe->ops.release_sec = rtl2832_sdr_release_sec; 1531 1532 dev_info(&s->i2c->dev, "%s: Realtek RTL2832 SDR attached\n", 1533 KBUILD_MODNAME); 1534 dev_notice(&s->udev->dev, 1535 "%s: SDR API is still slightly experimental and functionality changes may follow\n", 1536 KBUILD_MODNAME); 1537 return fe; 1538 1539 err_unregister_v4l2_dev: 1540 v4l2_device_unregister(&s->v4l2_dev); 1541 err_free_controls: 1542 v4l2_ctrl_handler_free(&s->hdl); 1543 err_free_mem: 1544 kfree(s); 1545 return NULL; 1546 } 1547 EXPORT_SYMBOL(rtl2832_sdr_attach); 1548 1549 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 1550 MODULE_DESCRIPTION("Realtek RTL2832 SDR driver"); 1551 MODULE_LICENSE("GPL"); 1552