| @@ -0,0 +1,1120 @@ |
| 1 | +/* |
| 2 | + * AirSpy SDR driver |
| 3 | + * |
| 4 | + * Copyright (C) 2014 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 | + |
| 17 | +#include <linux/module.h> |
| 18 | +#include <linux/slab.h> |
| 19 | +#include <linux/usb.h> |
| 20 | +#include <media/v4l2-device.h> |
| 21 | +#include <media/v4l2-ioctl.h> |
| 22 | +#include <media/v4l2-ctrls.h> |
| 23 | +#include <media/v4l2-event.h> |
| 24 | +#include <media/videobuf2-vmalloc.h> |
| 25 | + |
| 26 | +/* AirSpy USB API commands (from AirSpy Library) */ |
| 27 | +enum { |
| 28 | + CMD_INVALID = 0x00, |
| 29 | + CMD_RECEIVER_MODE = 0x01, |
| 30 | + CMD_SI5351C_WRITE = 0x02, |
| 31 | + CMD_SI5351C_READ = 0x03, |
| 32 | + CMD_R820T_WRITE = 0x04, |
| 33 | + CMD_R820T_READ = 0x05, |
| 34 | + CMD_SPIFLASH_ERASE = 0x06, |
| 35 | + CMD_SPIFLASH_WRITE = 0x07, |
| 36 | + CMD_SPIFLASH_READ = 0x08, |
| 37 | + CMD_BOARD_ID_READ = 0x09, |
| 38 | + CMD_VERSION_STRING_READ = 0x0a, |
| 39 | + CMD_BOARD_PARTID_SERIALNO_READ = 0x0b, |
| 40 | + CMD_SET_SAMPLE_RATE = 0x0c, |
| 41 | + CMD_SET_FREQ = 0x0d, |
| 42 | + CMD_SET_LNA_GAIN = 0x0e, |
| 43 | + CMD_SET_MIXER_GAIN = 0x0f, |
| 44 | + CMD_SET_VGA_GAIN = 0x10, |
| 45 | + CMD_SET_LNA_AGC = 0x11, |
| 46 | + CMD_SET_MIXER_AGC = 0x12, |
| 47 | + CMD_SET_PACKING = 0x13, |
| 48 | +}; |
| 49 | + |
| 50 | +/* |
| 51 | + * bEndpointAddress 0x81 EP 1 IN |
| 52 | + * Transfer Type Bulk |
| 53 | + * wMaxPacketSize 0x0200 1x 512 bytes |
| 54 | + */ |
| 55 | +#define MAX_BULK_BUFS (6) |
| 56 | +#define BULK_BUFFER_SIZE (128 * 512) |
| 57 | + |
| 58 | +static const struct v4l2_frequency_band bands[] = { |
| 59 | + { |
| 60 | + .tuner = 0, |
| 61 | + .type = V4L2_TUNER_ADC, |
| 62 | + .index = 0, |
| 63 | + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, |
| 64 | + .rangelow = 20000000, |
| 65 | + .rangehigh = 20000001, /* FIXME: make v4l2-compliance happy */ |
| 66 | + }, |
| 67 | +}; |
| 68 | + |
| 69 | +static const struct v4l2_frequency_band bands_rf[] = { |
| 70 | + { |
| 71 | + .tuner = 1, |
| 72 | + .type = V4L2_TUNER_RF, |
| 73 | + .index = 0, |
| 74 | + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, |
| 75 | + .rangelow = 24000000, |
| 76 | + .rangehigh = 1750000000, |
| 77 | + }, |
| 78 | +}; |
| 79 | + |
| 80 | +/* stream formats */ |
| 81 | +struct airspy_format { |
| 82 | + char *name; |
| 83 | + u32 pixelformat; |
| 84 | +}; |
| 85 | + |
| 86 | +/* format descriptions for capture and preview */ |
| 87 | +static struct airspy_format formats[] = { |
| 88 | + { |
| 89 | + .name = "Real U12LE", |
| 90 | + .pixelformat = V4L2_SDR_FMT_RU12LE, |
| 91 | + }, |
| 92 | +}; |
| 93 | + |
| 94 | +static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); |
| 95 | + |
| 96 | +/* intermediate buffers with raw data from the USB device */ |
| 97 | +struct airspy_frame_buf { |
| 98 | + struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */ |
| 99 | + struct list_head list; |
| 100 | +}; |
| 101 | + |
| 102 | +struct airspy { |
| 103 | +#define POWER_ON (1 << 1) |
| 104 | +#define URB_BUF (1 << 2) |
| 105 | +#define USB_STATE_URB_BUF (1 << 3) |
| 106 | + unsigned long flags; |
| 107 | + |
| 108 | + struct usb_device *udev; |
| 109 | + struct video_device vdev; |
| 110 | + struct v4l2_device v4l2_dev; |
| 111 | + |
| 112 | + /* videobuf2 queue and queued buffers list */ |
| 113 | + struct vb2_queue vb_queue; |
| 114 | + struct list_head queued_bufs; |
| 115 | + spinlock_t queued_bufs_lock; /* Protects queued_bufs */ |
| 116 | + unsigned sequence; /* Buffer sequence counter */ |
| 117 | + unsigned int vb_full; /* vb is full and packets dropped */ |
| 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 | + struct urb *urb_list[MAX_BULK_BUFS]; |
| 124 | + int buf_num; |
| 125 | + unsigned long buf_size; |
| 126 | + u8 *buf_list[MAX_BULK_BUFS]; |
| 127 | + dma_addr_t dma_addr[MAX_BULK_BUFS]; |
| 128 | + int urbs_initialized; |
| 129 | + int urbs_submitted; |
| 130 | + |
| 131 | + /* USB control message buffer */ |
| 132 | + #define BUF_SIZE 24 |
| 133 | + u8 buf[BUF_SIZE]; |
| 134 | + |
| 135 | + /* Current configuration */ |
| 136 | + unsigned int f_adc; |
| 137 | + unsigned int f_rf; |
| 138 | + u32 pixelformat; |
| 139 | + |
| 140 | + /* Controls */ |
| 141 | + struct v4l2_ctrl_handler hdl; |
| 142 | + struct v4l2_ctrl *lna_gain_auto; |
| 143 | + struct v4l2_ctrl *lna_gain; |
| 144 | + struct v4l2_ctrl *mixer_gain_auto; |
| 145 | + struct v4l2_ctrl *mixer_gain; |
| 146 | + struct v4l2_ctrl *if_gain; |
| 147 | + |
| 148 | + /* Sample rate calc */ |
| 149 | + unsigned long jiffies_next; |
| 150 | + unsigned int sample; |
| 151 | + unsigned int sample_measured; |
| 152 | +}; |
| 153 | + |
| 154 | +#define airspy_dbg_usb_control_msg(_udev, _r, _t, _v, _i, _b, _l) { \ |
| 155 | + char *_direction; \ |
| 156 | + if (_t & USB_DIR_IN) \ |
| 157 | + _direction = "<<<"; \ |
| 158 | + else \ |
| 159 | + _direction = ">>>"; \ |
| 160 | + dev_dbg(&_udev->dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x " \ |
| 161 | + "%s %*ph\n", __func__, _t, _r, _v & 0xff, _v >> 8, \ |
| 162 | + _i & 0xff, _i >> 8, _l & 0xff, _l >> 8, _direction, \ |
| 163 | + _l, _b); \ |
| 164 | +} |
| 165 | + |
| 166 | +/* execute firmware command */ |
| 167 | +static int airspy_ctrl_msg(struct airspy *s, u8 request, u16 value, u16 index, |
| 168 | + u8 *data, u16 size) |
| 169 | +{ |
| 170 | + int ret; |
| 171 | + unsigned int pipe; |
| 172 | + u8 requesttype; |
| 173 | + |
| 174 | + switch (request) { |
| 175 | + case CMD_RECEIVER_MODE: |
| 176 | + case CMD_SET_FREQ: |
| 177 | + pipe = usb_sndctrlpipe(s->udev, 0); |
| 178 | + requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT); |
| 179 | + break; |
| 180 | + case CMD_BOARD_ID_READ: |
| 181 | + case CMD_VERSION_STRING_READ: |
| 182 | + case CMD_BOARD_PARTID_SERIALNO_READ: |
| 183 | + case CMD_SET_LNA_GAIN: |
| 184 | + case CMD_SET_MIXER_GAIN: |
| 185 | + case CMD_SET_VGA_GAIN: |
| 186 | + case CMD_SET_LNA_AGC: |
| 187 | + case CMD_SET_MIXER_AGC: |
| 188 | + pipe = usb_rcvctrlpipe(s->udev, 0); |
| 189 | + requesttype = (USB_TYPE_VENDOR | USB_DIR_IN); |
| 190 | + break; |
| 191 | + default: |
| 192 | + dev_err(&s->udev->dev, "Unknown command %02x\n", request); |
| 193 | + ret = -EINVAL; |
| 194 | + goto err; |
| 195 | + } |
| 196 | + |
| 197 | + /* write request */ |
| 198 | + if (!(requesttype & USB_DIR_IN)) |
| 199 | + memcpy(s->buf, data, size); |
| 200 | + |
| 201 | + ret = usb_control_msg(s->udev, pipe, request, requesttype, value, |
| 202 | + index, s->buf, size, 1000); |
| 203 | + airspy_dbg_usb_control_msg(s->udev, request, requesttype, value, |
| 204 | + index, s->buf, size); |
| 205 | + if (ret < 0) { |
| 206 | + dev_err(&s->udev->dev, |
| 207 | + "usb_control_msg() failed %d request %02x\n", |
| 208 | + ret, request); |
| 209 | + goto err; |
| 210 | + } |
| 211 | + |
| 212 | + /* read request */ |
| 213 | + if (requesttype & USB_DIR_IN) |
| 214 | + memcpy(data, s->buf, size); |
| 215 | + |
| 216 | + return 0; |
| 217 | +err: |
| 218 | + return ret; |
| 219 | +} |
| 220 | + |
| 221 | +/* Private functions */ |
| 222 | +static struct airspy_frame_buf *airspy_get_next_fill_buf(struct airspy *s) |
| 223 | +{ |
| 224 | + unsigned long flags = 0; |
| 225 | + struct airspy_frame_buf *buf = NULL; |
| 226 | + |
| 227 | + spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| 228 | + if (list_empty(&s->queued_bufs)) |
| 229 | + goto leave; |
| 230 | + |
| 231 | + buf = list_entry(s->queued_bufs.next, |
| 232 | + struct airspy_frame_buf, list); |
| 233 | + list_del(&buf->list); |
| 234 | +leave: |
| 235 | + spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| 236 | + return buf; |
| 237 | +} |
| 238 | + |
| 239 | +static unsigned int airspy_convert_stream(struct airspy *s, |
| 240 | + void *dst, void *src, unsigned int src_len) |
| 241 | +{ |
| 242 | + unsigned int dst_len; |
| 243 | + |
| 244 | + if (s->pixelformat == V4L2_SDR_FMT_RU12LE) { |
| 245 | + memcpy(dst, src, src_len); |
| 246 | + dst_len = src_len; |
| 247 | + } else { |
| 248 | + dst_len = 0; |
| 249 | + } |
| 250 | + |
| 251 | + /* calculate samping rate and output it in 10 seconds intervals */ |
| 252 | + if (unlikely(time_is_before_jiffies(s->jiffies_next))) { |
| 253 | + #define MSECS 10000UL |
| 254 | + unsigned int samples = s->sample - s->sample_measured; |
| 255 | + s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); |
| 256 | + s->sample_measured = s->sample; |
| 257 | + dev_dbg(&s->udev->dev, |
| 258 | + "slen=%d samples=%u msecs=%lu sample rate=%lu\n", |
| 259 | + src_len, samples, MSECS, |
| 260 | + samples * 1000UL / MSECS); |
| 261 | + } |
| 262 | + |
| 263 | + /* total number of samples */ |
| 264 | + s->sample += src_len / 2; |
| 265 | + |
| 266 | + return dst_len; |
| 267 | +} |
| 268 | + |
| 269 | +/* |
| 270 | + * This gets called for the bulk stream pipe. This is done in interrupt |
| 271 | + * time, so it has to be fast, not crash, and not stall. Neat. |
| 272 | + */ |
| 273 | +static void airspy_urb_complete(struct urb *urb) |
| 274 | +{ |
| 275 | + struct airspy *s = urb->context; |
| 276 | + struct airspy_frame_buf *fbuf; |
| 277 | + |
| 278 | + dev_dbg_ratelimited(&s->udev->dev, |
| 279 | + "%s: status=%d length=%d/%d errors=%d\n", |
| 280 | + __func__, urb->status, urb->actual_length, |
| 281 | + urb->transfer_buffer_length, urb->error_count); |
| 282 | + |
| 283 | + switch (urb->status) { |
| 284 | + case 0: /* success */ |
| 285 | + case -ETIMEDOUT: /* NAK */ |
| 286 | + break; |
| 287 | + case -ECONNRESET: /* kill */ |
| 288 | + case -ENOENT: |
| 289 | + case -ESHUTDOWN: |
| 290 | + return; |
| 291 | + default: /* error */ |
| 292 | + dev_err_ratelimited(&s->udev->dev, "URB failed %d\n", |
| 293 | + urb->status); |
| 294 | + break; |
| 295 | + } |
| 296 | + |
| 297 | + if (likely(urb->actual_length > 0)) { |
| 298 | + void *ptr; |
| 299 | + unsigned int len; |
| 300 | + /* get free framebuffer */ |
| 301 | + fbuf = airspy_get_next_fill_buf(s); |
| 302 | + if (unlikely(fbuf == NULL)) { |
| 303 | + s->vb_full++; |
| 304 | + dev_notice_ratelimited(&s->udev->dev, |
| 305 | + "videobuf is full, %d packets dropped\n", |
| 306 | + s->vb_full); |
| 307 | + goto skip; |
| 308 | + } |
| 309 | + |
| 310 | + /* fill framebuffer */ |
| 311 | + ptr = vb2_plane_vaddr(&fbuf->vb, 0); |
| 312 | + len = airspy_convert_stream(s, ptr, urb->transfer_buffer, |
| 313 | + urb->actual_length); |
| 314 | + vb2_set_plane_payload(&fbuf->vb, 0, len); |
| 315 | + v4l2_get_timestamp(&fbuf->vb.v4l2_buf.timestamp); |
| 316 | + fbuf->vb.v4l2_buf.sequence = s->sequence++; |
| 317 | + vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); |
| 318 | + } |
| 319 | +skip: |
| 320 | + usb_submit_urb(urb, GFP_ATOMIC); |
| 321 | +} |
| 322 | + |
| 323 | +static int airspy_kill_urbs(struct airspy *s) |
| 324 | +{ |
| 325 | + int i; |
| 326 | + |
| 327 | + for (i = s->urbs_submitted - 1; i >= 0; i--) { |
| 328 | + dev_dbg(&s->udev->dev, "%s: kill urb=%d\n", __func__, i); |
| 329 | + /* stop the URB */ |
| 330 | + usb_kill_urb(s->urb_list[i]); |
| 331 | + } |
| 332 | + s->urbs_submitted = 0; |
| 333 | + |
| 334 | + return 0; |
| 335 | +} |
| 336 | + |
| 337 | +static int airspy_submit_urbs(struct airspy *s) |
| 338 | +{ |
| 339 | + int i, ret; |
| 340 | + |
| 341 | + for (i = 0; i < s->urbs_initialized; i++) { |
| 342 | + dev_dbg(&s->udev->dev, "%s: submit urb=%d\n", __func__, i); |
| 343 | + ret = usb_submit_urb(s->urb_list[i], GFP_ATOMIC); |
| 344 | + if (ret) { |
| 345 | + dev_err(&s->udev->dev, |
| 346 | + "Could not submit URB no. %d - get them all back\n", |
| 347 | + i); |
| 348 | + airspy_kill_urbs(s); |
| 349 | + return ret; |
| 350 | + } |
| 351 | + s->urbs_submitted++; |
| 352 | + } |
| 353 | + |
| 354 | + return 0; |
| 355 | +} |
| 356 | + |
| 357 | +static int airspy_free_stream_bufs(struct airspy *s) |
| 358 | +{ |
| 359 | + if (s->flags & USB_STATE_URB_BUF) { |
| 360 | + while (s->buf_num) { |
| 361 | + s->buf_num--; |
| 362 | + dev_dbg(&s->udev->dev, "%s: free buf=%d\n", |
| 363 | + __func__, s->buf_num); |
| 364 | + usb_free_coherent(s->udev, s->buf_size, |
| 365 | + s->buf_list[s->buf_num], |
| 366 | + s->dma_addr[s->buf_num]); |
| 367 | + } |
| 368 | + } |
| 369 | + s->flags &= ~USB_STATE_URB_BUF; |
| 370 | + |
| 371 | + return 0; |
| 372 | +} |
| 373 | + |
| 374 | +static int airspy_alloc_stream_bufs(struct airspy *s) |
| 375 | +{ |
| 376 | + s->buf_num = 0; |
| 377 | + s->buf_size = BULK_BUFFER_SIZE; |
| 378 | + |
| 379 | + dev_dbg(&s->udev->dev, |
| 380 | + "%s: all in all I will use %u bytes for streaming\n", |
| 381 | + __func__, MAX_BULK_BUFS * BULK_BUFFER_SIZE); |
| 382 | + |
| 383 | + for (s->buf_num = 0; s->buf_num < MAX_BULK_BUFS; s->buf_num++) { |
| 384 | + s->buf_list[s->buf_num] = usb_alloc_coherent(s->udev, |
| 385 | + BULK_BUFFER_SIZE, GFP_ATOMIC, |
| 386 | + &s->dma_addr[s->buf_num]); |
| 387 | + if (!s->buf_list[s->buf_num]) { |
| 388 | + dev_dbg(&s->udev->dev, "%s: alloc buf=%d failed\n", |
| 389 | + __func__, s->buf_num); |
| 390 | + airspy_free_stream_bufs(s); |
| 391 | + return -ENOMEM; |
| 392 | + } |
| 393 | + |
| 394 | + dev_dbg(&s->udev->dev, "%s: alloc buf=%d %p (dma %llu)\n", |
| 395 | + __func__, s->buf_num, |
| 396 | + s->buf_list[s->buf_num], |
| 397 | + (long long)s->dma_addr[s->buf_num]); |
| 398 | + s->flags |= USB_STATE_URB_BUF; |
| 399 | + } |
| 400 | + |
| 401 | + return 0; |
| 402 | +} |
| 403 | + |
| 404 | +static int airspy_free_urbs(struct airspy *s) |
| 405 | +{ |
| 406 | + int i; |
| 407 | + |
| 408 | + airspy_kill_urbs(s); |
| 409 | + |
| 410 | + for (i = s->urbs_initialized - 1; i >= 0; i--) { |
| 411 | + if (s->urb_list[i]) { |
| 412 | + dev_dbg(&s->udev->dev, "%s: free urb=%d\n", |
| 413 | + __func__, i); |
| 414 | + /* free the URBs */ |
| 415 | + usb_free_urb(s->urb_list[i]); |
| 416 | + } |
| 417 | + } |
| 418 | + s->urbs_initialized = 0; |
| 419 | + |
| 420 | + return 0; |
| 421 | +} |
| 422 | + |
| 423 | +static int airspy_alloc_urbs(struct airspy *s) |
| 424 | +{ |
| 425 | + int i, j; |
| 426 | + |
| 427 | + /* allocate the URBs */ |
| 428 | + for (i = 0; i < MAX_BULK_BUFS; i++) { |
| 429 | + dev_dbg(&s->udev->dev, "%s: alloc urb=%d\n", __func__, i); |
| 430 | + s->urb_list[i] = usb_alloc_urb(0, GFP_ATOMIC); |
| 431 | + if (!s->urb_list[i]) { |
| 432 | + dev_dbg(&s->udev->dev, "%s: failed\n", __func__); |
| 433 | + for (j = 0; j < i; j++) |
| 434 | + usb_free_urb(s->urb_list[j]); |
| 435 | + return -ENOMEM; |
| 436 | + } |
| 437 | + usb_fill_bulk_urb(s->urb_list[i], |
| 438 | + s->udev, |
| 439 | + usb_rcvbulkpipe(s->udev, 0x81), |
| 440 | + s->buf_list[i], |
| 441 | + BULK_BUFFER_SIZE, |
| 442 | + airspy_urb_complete, s); |
| 443 | + |
| 444 | + s->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
| 445 | + s->urb_list[i]->transfer_dma = s->dma_addr[i]; |
| 446 | + s->urbs_initialized++; |
| 447 | + } |
| 448 | + |
| 449 | + return 0; |
| 450 | +} |
| 451 | + |
| 452 | +/* Must be called with vb_queue_lock hold */ |
| 453 | +static void airspy_cleanup_queued_bufs(struct airspy *s) |
| 454 | +{ |
| 455 | + unsigned long flags = 0; |
| 456 | + |
| 457 | + dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| 458 | + |
| 459 | + spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| 460 | + while (!list_empty(&s->queued_bufs)) { |
| 461 | + struct airspy_frame_buf *buf; |
| 462 | + buf = list_entry(s->queued_bufs.next, |
| 463 | + struct airspy_frame_buf, list); |
| 464 | + list_del(&buf->list); |
| 465 | + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| 466 | + } |
| 467 | + spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| 468 | +} |
| 469 | + |
| 470 | +/* The user yanked out the cable... */ |
| 471 | +static void airspy_disconnect(struct usb_interface *intf) |
| 472 | +{ |
| 473 | + struct v4l2_device *v = usb_get_intfdata(intf); |
| 474 | + struct airspy *s = container_of(v, struct airspy, v4l2_dev); |
| 475 | + |
| 476 | + dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| 477 | + |
| 478 | + mutex_lock(&s->vb_queue_lock); |
| 479 | + mutex_lock(&s->v4l2_lock); |
| 480 | + /* No need to keep the urbs around after disconnection */ |
| 481 | + s->udev = NULL; |
| 482 | + v4l2_device_disconnect(&s->v4l2_dev); |
| 483 | + video_unregister_device(&s->vdev); |
| 484 | + mutex_unlock(&s->v4l2_lock); |
| 485 | + mutex_unlock(&s->vb_queue_lock); |
| 486 | + |
| 487 | + v4l2_device_put(&s->v4l2_dev); |
| 488 | +} |
| 489 | + |
| 490 | +/* Videobuf2 operations */ |
| 491 | +static int airspy_queue_setup(struct vb2_queue *vq, |
| 492 | + const struct v4l2_format *fmt, unsigned int *nbuffers, |
| 493 | + unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) |
| 494 | +{ |
| 495 | + struct airspy *s = vb2_get_drv_priv(vq); |
| 496 | + |
| 497 | + dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers); |
| 498 | + |
| 499 | + /* Need at least 8 buffers */ |
| 500 | + if (vq->num_buffers + *nbuffers < 8) |
| 501 | + *nbuffers = 8 - vq->num_buffers; |
| 502 | + *nplanes = 1; |
| 503 | + sizes[0] = PAGE_ALIGN(BULK_BUFFER_SIZE); |
| 504 | + |
| 505 | + dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n", |
| 506 | + __func__, *nbuffers, sizes[0]); |
| 507 | + return 0; |
| 508 | +} |
| 509 | + |
| 510 | +static void airspy_buf_queue(struct vb2_buffer *vb) |
| 511 | +{ |
| 512 | + struct airspy *s = vb2_get_drv_priv(vb->vb2_queue); |
| 513 | + struct airspy_frame_buf *buf = |
| 514 | + container_of(vb, struct airspy_frame_buf, vb); |
| 515 | + unsigned long flags = 0; |
| 516 | + |
| 517 | + /* Check the device has not disconnected between prep and queuing */ |
| 518 | + if (unlikely(!s->udev)) { |
| 519 | + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| 520 | + return; |
| 521 | + } |
| 522 | + |
| 523 | + spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| 524 | + list_add_tail(&buf->list, &s->queued_bufs); |
| 525 | + spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| 526 | +} |
| 527 | + |
| 528 | +static int airspy_start_streaming(struct vb2_queue *vq, unsigned int count) |
| 529 | +{ |
| 530 | + struct airspy *s = vb2_get_drv_priv(vq); |
| 531 | + int ret; |
| 532 | + |
| 533 | + dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| 534 | + |
| 535 | + if (!s->udev) |
| 536 | + return -ENODEV; |
| 537 | + |
| 538 | + mutex_lock(&s->v4l2_lock); |
| 539 | + |
| 540 | + set_bit(POWER_ON, &s->flags); |
| 541 | + |
| 542 | + s->sequence = 0; |
| 543 | + |
| 544 | + ret = airspy_alloc_stream_bufs(s); |
| 545 | + if (ret) |
| 546 | + goto err; |
| 547 | + |
| 548 | + ret = airspy_alloc_urbs(s); |
| 549 | + if (ret) |
| 550 | + goto err; |
| 551 | + |
| 552 | + ret = airspy_submit_urbs(s); |
| 553 | + if (ret) |
| 554 | + goto err; |
| 555 | + |
| 556 | + /* start hardware streaming */ |
| 557 | + ret = airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 1, 0, NULL, 0); |
| 558 | + if (ret) |
| 559 | + goto err; |
| 560 | +err: |
| 561 | + mutex_unlock(&s->v4l2_lock); |
| 562 | + |
| 563 | + return ret; |
| 564 | +} |
| 565 | + |
| 566 | +static void airspy_stop_streaming(struct vb2_queue *vq) |
| 567 | +{ |
| 568 | + struct airspy *s = vb2_get_drv_priv(vq); |
| 569 | + int ret; |
| 570 | + |
| 571 | + dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| 572 | + |
| 573 | + mutex_lock(&s->v4l2_lock); |
| 574 | + |
| 575 | + /* stop hardware streaming */ |
| 576 | + ret = airspy_ctrl_msg(s, CMD_RECEIVER_MODE, 0, 0, NULL, 0); |
| 577 | + |
| 578 | + airspy_kill_urbs(s); |
| 579 | + airspy_free_urbs(s); |
| 580 | + airspy_free_stream_bufs(s); |
| 581 | + |
| 582 | + airspy_cleanup_queued_bufs(s); |
| 583 | + |
| 584 | + clear_bit(POWER_ON, &s->flags); |
| 585 | + |
| 586 | + mutex_unlock(&s->v4l2_lock); |
| 587 | +} |
| 588 | + |
| 589 | +static struct vb2_ops airspy_vb2_ops = { |
| 590 | + .queue_setup = airspy_queue_setup, |
| 591 | + .buf_queue = airspy_buf_queue, |
| 592 | + .start_streaming = airspy_start_streaming, |
| 593 | + .stop_streaming = airspy_stop_streaming, |
| 594 | + .wait_prepare = vb2_ops_wait_prepare, |
| 595 | + .wait_finish = vb2_ops_wait_finish, |
| 596 | +}; |
| 597 | + |
| 598 | +static int airspy_querycap(struct file *file, void *fh, |
| 599 | + struct v4l2_capability *cap) |
| 600 | +{ |
| 601 | + struct airspy *s = video_drvdata(file); |
| 602 | + |
| 603 | + dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| 604 | + |
| 605 | + strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); |
| 606 | + strlcpy(cap->card, s->vdev.name, sizeof(cap->card)); |
| 607 | + usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info)); |
| 608 | + cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | |
| 609 | + V4L2_CAP_READWRITE | V4L2_CAP_TUNER; |
| 610 | + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
| 611 | + |
| 612 | + return 0; |
| 613 | +} |
| 614 | + |
| 615 | +static int airspy_enum_fmt_sdr_cap(struct file *file, void *priv, |
| 616 | + struct v4l2_fmtdesc *f) |
| 617 | +{ |
| 618 | + struct airspy *s = video_drvdata(file); |
| 619 | + |
| 620 | + dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, f->index); |
| 621 | + |
| 622 | + if (f->index >= NUM_FORMATS) |
| 623 | + return -EINVAL; |
| 624 | + |
| 625 | + strlcpy(f->description, formats[f->index].name, sizeof(f->description)); |
| 626 | + f->pixelformat = formats[f->index].pixelformat; |
| 627 | + |
| 628 | + return 0; |
| 629 | +} |
| 630 | + |
| 631 | +static int airspy_g_fmt_sdr_cap(struct file *file, void *priv, |
| 632 | + struct v4l2_format *f) |
| 633 | +{ |
| 634 | + struct airspy *s = video_drvdata(file); |
| 635 | + |
| 636 | + dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, |
| 637 | + (char *)&s->pixelformat); |
| 638 | + |
| 639 | + memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); |
| 640 | + f->fmt.sdr.pixelformat = s->pixelformat; |
| 641 | + |
| 642 | + return 0; |
| 643 | +} |
| 644 | + |
| 645 | +static int airspy_s_fmt_sdr_cap(struct file *file, void *priv, |
| 646 | + struct v4l2_format *f) |
| 647 | +{ |
| 648 | + struct airspy *s = video_drvdata(file); |
| 649 | + struct vb2_queue *q = &s->vb_queue; |
| 650 | + int i; |
| 651 | + |
| 652 | + dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, |
| 653 | + (char *)&f->fmt.sdr.pixelformat); |
| 654 | + |
| 655 | + if (vb2_is_busy(q)) |
| 656 | + return -EBUSY; |
| 657 | + |
| 658 | + memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); |
| 659 | + for (i = 0; i < NUM_FORMATS; i++) { |
| 660 | + if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
| 661 | + s->pixelformat = f->fmt.sdr.pixelformat; |
| 662 | + return 0; |
| 663 | + } |
| 664 | + } |
| 665 | + |
| 666 | + f->fmt.sdr.pixelformat = formats[0].pixelformat; |
| 667 | + s->pixelformat = formats[0].pixelformat; |
| 668 | + |
| 669 | + return 0; |
| 670 | +} |
| 671 | + |
| 672 | +static int airspy_try_fmt_sdr_cap(struct file *file, void *priv, |
| 673 | + struct v4l2_format *f) |
| 674 | +{ |
| 675 | + struct airspy *s = video_drvdata(file); |
| 676 | + int i; |
| 677 | + |
| 678 | + dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, |
| 679 | + (char *)&f->fmt.sdr.pixelformat); |
| 680 | + |
| 681 | + memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); |
| 682 | + for (i = 0; i < NUM_FORMATS; i++) { |
| 683 | + if (formats[i].pixelformat == f->fmt.sdr.pixelformat) |
| 684 | + return 0; |
| 685 | + } |
| 686 | + |
| 687 | + f->fmt.sdr.pixelformat = formats[0].pixelformat; |
| 688 | + |
| 689 | + return 0; |
| 690 | +} |
| 691 | + |
| 692 | +static int airspy_s_tuner(struct file *file, void *priv, |
| 693 | + const struct v4l2_tuner *v) |
| 694 | +{ |
| 695 | + struct airspy *s = video_drvdata(file); |
| 696 | + int ret; |
| 697 | + |
| 698 | + dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, v->index); |
| 699 | + |
| 700 | + if (v->index == 0) |
| 701 | + ret = 0; |
| 702 | + else if (v->index == 1) |
| 703 | + ret = 0; |
| 704 | + else |
| 705 | + ret = -EINVAL; |
| 706 | + |
| 707 | + return ret; |
| 708 | +} |
| 709 | + |
| 710 | +static int airspy_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) |
| 711 | +{ |
| 712 | + struct airspy *s = video_drvdata(file); |
| 713 | + int ret; |
| 714 | + |
| 715 | + dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, v->index); |
| 716 | + |
| 717 | + if (v->index == 0) { |
| 718 | + strlcpy(v->name, "AirSpy ADC", sizeof(v->name)); |
| 719 | + v->type = V4L2_TUNER_ADC; |
| 720 | + v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; |
| 721 | + v->rangelow = bands[0].rangelow; |
| 722 | + v->rangehigh = bands[0].rangehigh; |
| 723 | + ret = 0; |
| 724 | + } else if (v->index == 1) { |
| 725 | + strlcpy(v->name, "AirSpy RF", sizeof(v->name)); |
| 726 | + v->type = V4L2_TUNER_RF; |
| 727 | + v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; |
| 728 | + v->rangelow = bands_rf[0].rangelow; |
| 729 | + v->rangehigh = bands_rf[0].rangehigh; |
| 730 | + ret = 0; |
| 731 | + } else { |
| 732 | + ret = -EINVAL; |
| 733 | + } |
| 734 | + |
| 735 | + return ret; |
| 736 | +} |
| 737 | + |
| 738 | +static int airspy_g_frequency(struct file *file, void *priv, |
| 739 | + struct v4l2_frequency *f) |
| 740 | +{ |
| 741 | + struct airspy *s = video_drvdata(file); |
| 742 | + int ret = 0; |
| 743 | + dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d\n", |
| 744 | + __func__, f->tuner, f->type); |
| 745 | + |
| 746 | + if (f->tuner == 0) { |
| 747 | + f->type = V4L2_TUNER_ADC; |
| 748 | + f->frequency = s->f_adc; |
| 749 | + ret = 0; |
| 750 | + } else if (f->tuner == 1) { |
| 751 | + f->type = V4L2_TUNER_RF; |
| 752 | + f->frequency = s->f_rf; |
| 753 | + } else { |
| 754 | + ret = -EINVAL; |
| 755 | + } |
| 756 | + |
| 757 | + return ret; |
| 758 | +} |
| 759 | + |
| 760 | +static int airspy_s_frequency(struct file *file, void *priv, |
| 761 | + const struct v4l2_frequency *f) |
| 762 | +{ |
| 763 | + struct airspy *s = video_drvdata(file); |
| 764 | + int ret; |
| 765 | + u8 buf[4]; |
| 766 | + |
| 767 | + dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d frequency=%u\n", |
| 768 | + __func__, f->tuner, f->type, f->frequency); |
| 769 | + |
| 770 | + if (f->tuner == 0) { |
| 771 | + s->f_adc = clamp_t(unsigned int, f->frequency, |
| 772 | + bands[0].rangelow, |
| 773 | + bands[0].rangehigh); |
| 774 | + dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n", |
| 775 | + __func__, s->f_adc); |
| 776 | + ret = 0; |
| 777 | + } else if (f->tuner == 1) { |
| 778 | + s->f_rf = clamp_t(unsigned int, f->frequency, |
| 779 | + bands_rf[0].rangelow, |
| 780 | + bands_rf[0].rangehigh); |
| 781 | + dev_dbg(&s->udev->dev, "%s: RF frequency=%u Hz\n", |
| 782 | + __func__, s->f_rf); |
| 783 | + buf[0] = (s->f_rf >> 0) & 0xff; |
| 784 | + buf[1] = (s->f_rf >> 8) & 0xff; |
| 785 | + buf[2] = (s->f_rf >> 16) & 0xff; |
| 786 | + buf[3] = (s->f_rf >> 24) & 0xff; |
| 787 | + ret = airspy_ctrl_msg(s, CMD_SET_FREQ, 0, 0, buf, 4); |
| 788 | + } else { |
| 789 | + ret = -EINVAL; |
| 790 | + } |
| 791 | + |
| 792 | + return ret; |
| 793 | +} |
| 794 | + |
| 795 | +static int airspy_enum_freq_bands(struct file *file, void *priv, |
| 796 | + struct v4l2_frequency_band *band) |
| 797 | +{ |
| 798 | + struct airspy *s = video_drvdata(file); |
| 799 | + int ret; |
| 800 | + dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d index=%d\n", |
| 801 | + __func__, band->tuner, band->type, band->index); |
| 802 | + |
| 803 | + if (band->tuner == 0) { |
| 804 | + if (band->index >= ARRAY_SIZE(bands)) { |
| 805 | + ret = -EINVAL; |
| 806 | + } else { |
| 807 | + *band = bands[band->index]; |
| 808 | + ret = 0; |
| 809 | + } |
| 810 | + } else if (band->tuner == 1) { |
| 811 | + if (band->index >= ARRAY_SIZE(bands_rf)) { |
| 812 | + ret = -EINVAL; |
| 813 | + } else { |
| 814 | + *band = bands_rf[band->index]; |
| 815 | + ret = 0; |
| 816 | + } |
| 817 | + } else { |
| 818 | + ret = -EINVAL; |
| 819 | + } |
| 820 | + |
| 821 | + return ret; |
| 822 | +} |
| 823 | + |
| 824 | +static const struct v4l2_ioctl_ops airspy_ioctl_ops = { |
| 825 | + .vidioc_querycap = airspy_querycap, |
| 826 | + |
| 827 | + .vidioc_enum_fmt_sdr_cap = airspy_enum_fmt_sdr_cap, |
| 828 | + .vidioc_g_fmt_sdr_cap = airspy_g_fmt_sdr_cap, |
| 829 | + .vidioc_s_fmt_sdr_cap = airspy_s_fmt_sdr_cap, |
| 830 | + .vidioc_try_fmt_sdr_cap = airspy_try_fmt_sdr_cap, |
| 831 | + |
| 832 | + .vidioc_reqbufs = vb2_ioctl_reqbufs, |
| 833 | + .vidioc_create_bufs = vb2_ioctl_create_bufs, |
| 834 | + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
| 835 | + .vidioc_querybuf = vb2_ioctl_querybuf, |
| 836 | + .vidioc_qbuf = vb2_ioctl_qbuf, |
| 837 | + .vidioc_dqbuf = vb2_ioctl_dqbuf, |
| 838 | + |
| 839 | + .vidioc_streamon = vb2_ioctl_streamon, |
| 840 | + .vidioc_streamoff = vb2_ioctl_streamoff, |
| 841 | + |
| 842 | + .vidioc_g_tuner = airspy_g_tuner, |
| 843 | + .vidioc_s_tuner = airspy_s_tuner, |
| 844 | + |
| 845 | + .vidioc_g_frequency = airspy_g_frequency, |
| 846 | + .vidioc_s_frequency = airspy_s_frequency, |
| 847 | + .vidioc_enum_freq_bands = airspy_enum_freq_bands, |
| 848 | + |
| 849 | + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| 850 | + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
| 851 | + .vidioc_log_status = v4l2_ctrl_log_status, |
| 852 | +}; |
| 853 | + |
| 854 | +static const struct v4l2_file_operations airspy_fops = { |
| 855 | + .owner = THIS_MODULE, |
| 856 | + .open = v4l2_fh_open, |
| 857 | + .release = vb2_fop_release, |
| 858 | + .read = vb2_fop_read, |
| 859 | + .poll = vb2_fop_poll, |
| 860 | + .mmap = vb2_fop_mmap, |
| 861 | + .unlocked_ioctl = video_ioctl2, |
| 862 | +}; |
| 863 | + |
| 864 | +static struct video_device airspy_template = { |
| 865 | + .name = "AirSpy SDR", |
| 866 | + .release = video_device_release_empty, |
| 867 | + .fops = &airspy_fops, |
| 868 | + .ioctl_ops = &airspy_ioctl_ops, |
| 869 | +}; |
| 870 | + |
| 871 | +static void airspy_video_release(struct v4l2_device *v) |
| 872 | +{ |
| 873 | + struct airspy *s = container_of(v, struct airspy, v4l2_dev); |
| 874 | + |
| 875 | + v4l2_ctrl_handler_free(&s->hdl); |
| 876 | + v4l2_device_unregister(&s->v4l2_dev); |
| 877 | + kfree(s); |
| 878 | +} |
| 879 | + |
| 880 | +static int airspy_set_lna_gain(struct airspy *s) |
| 881 | +{ |
| 882 | + int ret; |
| 883 | + u8 u8tmp; |
| 884 | + |
| 885 | + dev_dbg(&s->udev->dev, "%s: lna auto=%d->%d val=%d->%d\n", |
| 886 | + __func__, s->lna_gain_auto->cur.val, |
| 887 | + s->lna_gain_auto->val, s->lna_gain->cur.val, |
| 888 | + s->lna_gain->val); |
| 889 | + |
| 890 | + ret = airspy_ctrl_msg(s, CMD_SET_LNA_AGC, 0, s->lna_gain_auto->val, |
| 891 | + &u8tmp, 1); |
| 892 | + if (ret) |
| 893 | + goto err; |
| 894 | + |
| 895 | + if (s->lna_gain_auto->val == false) { |
| 896 | + ret = airspy_ctrl_msg(s, CMD_SET_LNA_GAIN, 0, s->lna_gain->val, |
| 897 | + &u8tmp, 1); |
| 898 | + if (ret) |
| 899 | + goto err; |
| 900 | + } |
| 901 | +err: |
| 902 | + if (ret) |
| 903 | + dev_dbg(&s->udev->dev, "%s: failed=%d\n", __func__, ret); |
| 904 | + |
| 905 | + return ret; |
| 906 | +} |
| 907 | + |
| 908 | +static int airspy_set_mixer_gain(struct airspy *s) |
| 909 | +{ |
| 910 | + int ret; |
| 911 | + u8 u8tmp; |
| 912 | + |
| 913 | + dev_dbg(&s->udev->dev, "%s: mixer auto=%d->%d val=%d->%d\n", |
| 914 | + __func__, s->mixer_gain_auto->cur.val, |
| 915 | + s->mixer_gain_auto->val, s->mixer_gain->cur.val, |
| 916 | + s->mixer_gain->val); |
| 917 | + |
| 918 | + ret = airspy_ctrl_msg(s, CMD_SET_MIXER_AGC, 0, s->mixer_gain_auto->val, |
| 919 | + &u8tmp, 1); |
| 920 | + if (ret) |
| 921 | + goto err; |
| 922 | + |
| 923 | + if (s->mixer_gain_auto->val == false) { |
| 924 | + ret = airspy_ctrl_msg(s, CMD_SET_MIXER_GAIN, 0, |
| 925 | + s->mixer_gain->val, &u8tmp, 1); |
| 926 | + if (ret) |
| 927 | + goto err; |
| 928 | + } |
| 929 | +err: |
| 930 | + if (ret) |
| 931 | + dev_dbg(&s->udev->dev, "%s: failed=%d\n", __func__, ret); |
| 932 | + |
| 933 | + return ret; |
| 934 | +} |
| 935 | + |
| 936 | +static int airspy_set_if_gain(struct airspy *s) |
| 937 | +{ |
| 938 | + int ret; |
| 939 | + u8 u8tmp; |
| 940 | + |
| 941 | + dev_dbg(&s->udev->dev, "%s: val=%d->%d\n", |
| 942 | + __func__, s->if_gain->cur.val, s->if_gain->val); |
| 943 | + |
| 944 | + ret = airspy_ctrl_msg(s, CMD_SET_VGA_GAIN, 0, s->if_gain->val, |
| 945 | + &u8tmp, 1); |
| 946 | + if (ret) |
| 947 | + goto err; |
| 948 | +err: |
| 949 | + if (ret) |
| 950 | + dev_dbg(&s->udev->dev, "%s: failed=%d\n", __func__, ret); |
| 951 | + |
| 952 | + return ret; |
| 953 | +} |
| 954 | + |
| 955 | +static int airspy_s_ctrl(struct v4l2_ctrl *ctrl) |
| 956 | +{ |
| 957 | + struct airspy *s = container_of(ctrl->handler, struct airspy, hdl); |
| 958 | + int ret; |
| 959 | + |
| 960 | + switch (ctrl->id) { |
| 961 | + case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: |
| 962 | + case V4L2_CID_RF_TUNER_LNA_GAIN: |
| 963 | + ret = airspy_set_lna_gain(s); |
| 964 | + break; |
| 965 | + case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: |
| 966 | + case V4L2_CID_RF_TUNER_MIXER_GAIN: |
| 967 | + ret = airspy_set_mixer_gain(s); |
| 968 | + break; |
| 969 | + case V4L2_CID_RF_TUNER_IF_GAIN: |
| 970 | + ret = airspy_set_if_gain(s); |
| 971 | + break; |
| 972 | + default: |
| 973 | + dev_dbg(&s->udev->dev, "%s: unknown ctrl: id=%d name=%s\n", |
| 974 | + __func__, ctrl->id, ctrl->name); |
| 975 | + ret = -EINVAL; |
| 976 | + } |
| 977 | + |
| 978 | + return ret; |
| 979 | +} |
| 980 | + |
| 981 | +static const struct v4l2_ctrl_ops airspy_ctrl_ops = { |
| 982 | + .s_ctrl = airspy_s_ctrl, |
| 983 | +}; |
| 984 | + |
| 985 | +static int airspy_probe(struct usb_interface *intf, |
| 986 | + const struct usb_device_id *id) |
| 987 | +{ |
| 988 | + struct usb_device *udev = interface_to_usbdev(intf); |
| 989 | + struct airspy *s = NULL; |
| 990 | + int ret; |
| 991 | + u8 u8tmp, buf[BUF_SIZE]; |
| 992 | + |
| 993 | + s = kzalloc(sizeof(struct airspy), GFP_KERNEL); |
| 994 | + if (s == NULL) { |
| 995 | + dev_err(&udev->dev, |
| 996 | + "Could not allocate memory for airspy state\n"); |
| 997 | + return -ENOMEM; |
| 998 | + } |
| 999 | + |
| 1000 | + mutex_init(&s->v4l2_lock); |
| 1001 | + mutex_init(&s->vb_queue_lock); |
| 1002 | + spin_lock_init(&s->queued_bufs_lock); |
| 1003 | + INIT_LIST_HEAD(&s->queued_bufs); |
| 1004 | + s->udev = udev; |
| 1005 | + s->f_adc = bands[0].rangelow; |
| 1006 | + s->f_rf = bands_rf[0].rangelow; |
| 1007 | + s->pixelformat = V4L2_SDR_FMT_RU12LE; |
| 1008 | + |
| 1009 | + /* Detect device */ |
| 1010 | + ret = airspy_ctrl_msg(s, CMD_BOARD_ID_READ, 0, 0, &u8tmp, 1); |
| 1011 | + if (ret == 0) |
| 1012 | + ret = airspy_ctrl_msg(s, CMD_VERSION_STRING_READ, 0, 0, |
| 1013 | + buf, BUF_SIZE); |
| 1014 | + if (ret) { |
| 1015 | + dev_err(&s->udev->dev, "Could not detect board\n"); |
| 1016 | + goto err_free_mem; |
| 1017 | + } |
| 1018 | + |
| 1019 | + buf[BUF_SIZE - 1] = '\0'; |
| 1020 | + |
| 1021 | + dev_info(&s->udev->dev, "Board ID: %02x\n", u8tmp); |
| 1022 | + dev_info(&s->udev->dev, "Firmware version: %s\n", buf); |
| 1023 | + |
| 1024 | + /* Init videobuf2 queue structure */ |
| 1025 | + s->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; |
| 1026 | + s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; |
| 1027 | + s->vb_queue.drv_priv = s; |
| 1028 | + s->vb_queue.buf_struct_size = sizeof(struct airspy_frame_buf); |
| 1029 | + s->vb_queue.ops = &airspy_vb2_ops; |
| 1030 | + s->vb_queue.mem_ops = &vb2_vmalloc_memops; |
| 1031 | + s->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| 1032 | + ret = vb2_queue_init(&s->vb_queue); |
| 1033 | + if (ret) { |
| 1034 | + dev_err(&s->udev->dev, "Could not initialize vb2 queue\n"); |
| 1035 | + goto err_free_mem; |
| 1036 | + } |
| 1037 | + |
| 1038 | + /* Init video_device structure */ |
| 1039 | + s->vdev = airspy_template; |
| 1040 | + s->vdev.queue = &s->vb_queue; |
| 1041 | + s->vdev.queue->lock = &s->vb_queue_lock; |
| 1042 | + set_bit(V4L2_FL_USE_FH_PRIO, &s->vdev.flags); |
| 1043 | + video_set_drvdata(&s->vdev, s); |
| 1044 | + |
| 1045 | + /* Register the v4l2_device structure */ |
| 1046 | + s->v4l2_dev.release = airspy_video_release; |
| 1047 | + ret = v4l2_device_register(&intf->dev, &s->v4l2_dev); |
| 1048 | + if (ret) { |
| 1049 | + dev_err(&s->udev->dev, |
| 1050 | + "Failed to register v4l2-device (%d)\n", ret); |
| 1051 | + goto err_free_mem; |
| 1052 | + } |
| 1053 | + |
| 1054 | + /* Register controls */ |
| 1055 | + v4l2_ctrl_handler_init(&s->hdl, 5); |
| 1056 | + s->lna_gain_auto = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, |
| 1057 | + V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 0); |
| 1058 | + s->lna_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, |
| 1059 | + V4L2_CID_RF_TUNER_LNA_GAIN, 0, 14, 1, 8); |
| 1060 | + v4l2_ctrl_auto_cluster(2, &s->lna_gain_auto, 0, false); |
| 1061 | + s->mixer_gain_auto = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, |
| 1062 | + V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 0); |
| 1063 | + s->mixer_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, |
| 1064 | + V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 15, 1, 8); |
| 1065 | + v4l2_ctrl_auto_cluster(2, &s->mixer_gain_auto, 0, false); |
| 1066 | + s->if_gain = v4l2_ctrl_new_std(&s->hdl, &airspy_ctrl_ops, |
| 1067 | + V4L2_CID_RF_TUNER_IF_GAIN, 0, 15, 1, 0); |
| 1068 | + if (s->hdl.error) { |
| 1069 | + ret = s->hdl.error; |
| 1070 | + dev_err(&s->udev->dev, "Could not initialize controls\n"); |
| 1071 | + goto err_free_controls; |
| 1072 | + } |
| 1073 | + |
| 1074 | + v4l2_ctrl_handler_setup(&s->hdl); |
| 1075 | + |
| 1076 | + s->v4l2_dev.ctrl_handler = &s->hdl; |
| 1077 | + s->vdev.v4l2_dev = &s->v4l2_dev; |
| 1078 | + s->vdev.lock = &s->v4l2_lock; |
| 1079 | + |
| 1080 | + ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1); |
| 1081 | + if (ret) { |
| 1082 | + dev_err(&s->udev->dev, |
| 1083 | + "Failed to register as video device (%d)\n", |
| 1084 | + ret); |
| 1085 | + goto err_unregister_v4l2_dev; |
| 1086 | + } |
| 1087 | + dev_info(&s->udev->dev, "Registered as %s\n", |
| 1088 | + video_device_node_name(&s->vdev)); |
| 1089 | + |
| 1090 | + return 0; |
| 1091 | + |
| 1092 | +err_free_controls: |
| 1093 | + v4l2_ctrl_handler_free(&s->hdl); |
| 1094 | +err_unregister_v4l2_dev: |
| 1095 | + v4l2_device_unregister(&s->v4l2_dev); |
| 1096 | +err_free_mem: |
| 1097 | + kfree(s); |
| 1098 | + return ret; |
| 1099 | +} |
| 1100 | + |
| 1101 | +/* USB device ID list */ |
| 1102 | +static struct usb_device_id airspy_id_table[] = { |
| 1103 | + { USB_DEVICE(0x1d50, 0x60a1) }, /* AirSpy */ |
| 1104 | + { } |
| 1105 | +}; |
| 1106 | +MODULE_DEVICE_TABLE(usb, airspy_id_table); |
| 1107 | + |
| 1108 | +/* USB subsystem interface */ |
| 1109 | +static struct usb_driver airspy_driver = { |
| 1110 | + .name = KBUILD_MODNAME, |
| 1111 | + .probe = airspy_probe, |
| 1112 | + .disconnect = airspy_disconnect, |
| 1113 | + .id_table = airspy_id_table, |
| 1114 | +}; |
| 1115 | + |
| 1116 | +module_usb_driver(airspy_driver); |
| 1117 | + |
| 1118 | +MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| 1119 | +MODULE_DESCRIPTION("AirSpy SDR"); |
| 1120 | +MODULE_LICENSE("GPL"); |