2 * This file is part of the sigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "libsigrok.h"
27 #include "libsigrok-internal.h"
31 static const struct fx2lafw_profile supported_fx2[] = {
34 * EE Electronics ESLA201A
37 { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
38 FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
44 { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
45 FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
51 { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
52 FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
57 * EE Electronics ESLA100
59 * Robomotic BugLogic 3
61 { 0x0925, 0x3881, "Saleae", "Logic", NULL,
62 FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
66 * Default Cypress FX2 without EEPROM, e.g.:
68 * Braintechnology USB Interface V2.x
70 { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
71 FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
75 * Braintechnology USB-LPS
77 { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
78 FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
81 { 0, 0, 0, 0, 0, 0, 0 }
84 static const int32_t hwcaps[] = {
85 SR_CONF_LOGIC_ANALYZER,
89 /* These are really implemented in the driver, not the hardware. */
90 SR_CONF_LIMIT_SAMPLES,
94 static const char *probe_names[] = {
95 "0", "1", "2", "3", "4", "5", "6", "7",
96 "8", "9", "10", "11", "12", "13", "14", "15",
100 static const uint64_t samplerates[] = {
119 SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
120 static struct sr_dev_driver *di = &fx2lafw_driver_info;
121 static int hw_dev_close(struct sr_dev_inst *sdi);
122 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
125 * Check the USB configuration to determine if this is an fx2lafw device.
127 * @return TRUE if the device's configuration profile match fx2lafw
128 * configuration, FALSE otherwise.
130 static gboolean check_conf_profile(libusb_device *dev)
132 struct libusb_device_descriptor des;
133 struct libusb_device_handle *hdl;
135 unsigned char strdesc[64];
140 /* Assume the FW has not been loaded, unless proven wrong. */
141 if (libusb_get_device_descriptor(dev, &des) != 0)
144 if (libusb_open(dev, &hdl) != 0)
147 if (libusb_get_string_descriptor_ascii(hdl,
148 des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
150 if (strncmp((const char *)strdesc, "sigrok", 6))
153 if (libusb_get_string_descriptor_ascii(hdl,
154 des.iProduct, strdesc, sizeof(strdesc)) < 0)
156 if (strncmp((const char *)strdesc, "fx2lafw", 7))
159 /* If we made it here, it must be an fx2lafw. */
168 static int fx2lafw_dev_open(struct sr_dev_inst *sdi)
170 libusb_device **devlist;
171 struct sr_usb_dev_inst *usb;
172 struct libusb_device_descriptor des;
173 struct dev_context *devc;
174 struct drv_context *drvc;
175 struct version_info vi;
176 int ret, skip, i, device_count;
183 if (sdi->status == SR_ST_ACTIVE)
184 /* Device is already in use. */
188 device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
189 if (device_count < 0) {
190 sr_err("Failed to get device list: %s.",
191 libusb_error_name(device_count));
195 for (i = 0; i < device_count; i++) {
196 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
197 sr_err("Failed to get device descriptor: %s.",
198 libusb_error_name(ret));
202 if (des.idVendor != devc->profile->vid
203 || des.idProduct != devc->profile->pid)
206 if (sdi->status == SR_ST_INITIALIZING) {
207 if (skip != sdi->index) {
208 /* Skip devices of this type that aren't the one we want. */
212 } else if (sdi->status == SR_ST_INACTIVE) {
214 * This device is fully enumerated, so we need to find
215 * this device by vendor, product, bus and address.
217 if (libusb_get_bus_number(devlist[i]) != usb->bus
218 || libusb_get_device_address(devlist[i]) != usb->address)
219 /* This is not the one. */
223 if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
224 if (usb->address == 0xff)
226 * First time we touch this device after FW
227 * upload, so we don't know the address yet.
229 usb->address = libusb_get_device_address(devlist[i]);
231 sr_err("Failed to open device: %s.",
232 libusb_error_name(ret));
236 ret = command_get_fw_version(usb->devhdl, &vi);
238 sr_err("Failed to get firmware version.");
242 ret = command_get_revid_version(usb->devhdl, &revid);
244 sr_err("Failed to get REVID.");
249 * Changes in major version mean incompatible/API changes, so
250 * bail out if we encounter an incompatible version.
251 * Different minor versions are OK, they should be compatible.
253 if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
254 sr_err("Expected firmware version %d.x, "
255 "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
260 sdi->status = SR_ST_ACTIVE;
261 sr_info("Opened device %d on %d.%d, "
262 "interface %d, firmware %d.%d.",
263 sdi->index, usb->bus, usb->address,
264 USB_INTERFACE, vi.major, vi.minor);
266 sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.",
267 revid, (revid != 1) ? " (FX2)" : "A (FX2LP)");
271 libusb_free_device_list(devlist, 1);
273 if (sdi->status != SR_ST_ACTIVE)
279 static int configure_probes(const struct sr_dev_inst *sdi)
281 struct dev_context *devc;
282 struct sr_probe *probe;
284 int probe_bit, stage, i;
288 for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
289 devc->trigger_mask[i] = 0;
290 devc->trigger_value[i] = 0;
294 for (l = sdi->probes; l; l = l->next) {
295 probe = (struct sr_probe *)l->data;
296 if (probe->enabled == FALSE)
299 if (probe->index > 7)
300 devc->sample_wide = TRUE;
302 probe_bit = 1 << (probe->index);
303 if (!(probe->trigger))
307 for (tc = probe->trigger; *tc; tc++) {
308 devc->trigger_mask[stage] |= probe_bit;
310 devc->trigger_value[stage] |= probe_bit;
312 if (stage > NUM_TRIGGER_STAGES)
319 * We didn't configure any triggers, make sure acquisition
320 * doesn't wait for any.
322 devc->trigger_stage = TRIGGER_FIRED;
324 devc->trigger_stage = 0;
329 static struct dev_context *fx2lafw_dev_new(void)
331 struct dev_context *devc;
333 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
334 sr_err("Device context malloc failed.");
338 devc->trigger_stage = TRIGGER_FIRED;
343 static int clear_instances(void)
345 return std_dev_clear(di, NULL);
348 static int hw_init(struct sr_context *sr_ctx)
350 return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
353 static GSList *hw_scan(GSList *options)
355 struct drv_context *drvc;
356 struct dev_context *devc;
357 struct sr_dev_inst *sdi;
358 struct sr_usb_dev_inst *usb;
359 struct sr_probe *probe;
360 struct sr_config *src;
361 const struct fx2lafw_profile *prof;
362 GSList *l, *devices, *conn_devices;
363 struct libusb_device_descriptor des;
364 libusb_device **devlist;
365 int devcnt, num_logic_probes, ret, i, j;
372 /* This scan always invalidates any previous scans. */
376 for (l = options; l; l = l->next) {
380 conn = g_variant_get_string(src->data, NULL);
385 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
389 /* Find all fx2lafw compatible devices and upload firmware to them. */
391 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
392 for (i = 0; devlist[i]; i++) {
395 for (l = conn_devices; l; l = l->next) {
397 if (usb->bus == libusb_get_bus_number(devlist[i])
398 && usb->address == libusb_get_device_address(devlist[i]))
402 /* This device matched none of the ones that
403 * matched the conn specification. */
407 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
408 sr_warn("Failed to get device descriptor: %s.",
409 libusb_error_name(ret));
414 for (j = 0; supported_fx2[j].vid; j++) {
415 if (des.idVendor == supported_fx2[j].vid &&
416 des.idProduct == supported_fx2[j].pid) {
417 prof = &supported_fx2[j];
421 /* Skip if the device was not found. */
425 devcnt = g_slist_length(drvc->instances);
426 sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
427 prof->vendor, prof->model, prof->model_version);
432 /* Fill in probelist according to this device's profile. */
433 num_logic_probes = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
434 for (j = 0; j < num_logic_probes; j++) {
435 if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
438 sdi->probes = g_slist_append(sdi->probes, probe);
441 devc = fx2lafw_dev_new();
442 devc->profile = prof;
444 drvc->instances = g_slist_append(drvc->instances, sdi);
445 devices = g_slist_append(devices, sdi);
447 if (check_conf_profile(devlist[i])) {
448 /* Already has the firmware, so fix the new address. */
449 sr_dbg("Found an fx2lafw device.");
450 sdi->status = SR_ST_INACTIVE;
451 sdi->inst_type = SR_INST_USB;
452 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
453 libusb_get_device_address(devlist[i]), NULL);
455 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
456 prof->firmware) == SR_OK)
457 /* Store when this device's FW was updated. */
458 devc->fw_updated = g_get_monotonic_time();
460 sr_err("Firmware upload failed for "
461 "device %d.", devcnt);
462 sdi->inst_type = SR_INST_USB;
463 sdi->conn = sr_usb_dev_inst_new (libusb_get_bus_number(devlist[i]),
467 libusb_free_device_list(devlist, 1);
472 static GSList *hw_dev_list(void)
474 return ((struct drv_context *)(di->priv))->instances;
477 static int hw_dev_open(struct sr_dev_inst *sdi)
479 struct sr_usb_dev_inst *usb;
480 struct dev_context *devc;
482 int64_t timediff_us, timediff_ms;
488 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
489 * milliseconds for the FX2 to renumerate.
492 if (devc->fw_updated > 0) {
493 sr_info("Waiting for device to reset.");
494 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
495 g_usleep(300 * 1000);
497 while (timediff_ms < MAX_RENUM_DELAY_MS) {
498 if ((ret = fx2lafw_dev_open(sdi)) == SR_OK)
500 g_usleep(100 * 1000);
502 timediff_us = g_get_monotonic_time() - devc->fw_updated;
503 timediff_ms = timediff_us / 1000;
504 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
507 sr_err("Device failed to renumerate.");
510 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
512 sr_info("Firmware upload was not needed.");
513 ret = fx2lafw_dev_open(sdi);
517 sr_err("Unable to open device.");
521 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
524 case LIBUSB_ERROR_BUSY:
525 sr_err("Unable to claim USB interface. Another "
526 "program or driver has already claimed it.");
528 case LIBUSB_ERROR_NO_DEVICE:
529 sr_err("Device has been disconnected.");
532 sr_err("Unable to claim interface: %s.",
533 libusb_error_name(ret));
540 if (devc->cur_samplerate == 0) {
541 /* Samplerate hasn't been set; default to the slowest one. */
542 devc->cur_samplerate = samplerates[0];
548 static int hw_dev_close(struct sr_dev_inst *sdi)
550 struct sr_usb_dev_inst *usb;
553 if (usb->devhdl == NULL)
556 sr_info("fx2lafw: Closing device %d on %d.%d interface %d.",
557 sdi->index, usb->bus, usb->address, USB_INTERFACE);
558 libusb_release_interface(usb->devhdl, USB_INTERFACE);
559 libusb_close(usb->devhdl);
561 sdi->status = SR_ST_INACTIVE;
566 static int hw_cleanup(void)
568 struct drv_context *drvc;
571 if (!(drvc = di->priv))
574 ret = clear_instances();
582 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
584 struct dev_context *devc;
587 case SR_CONF_SAMPLERATE:
590 *data = g_variant_new_uint64(devc->cur_samplerate);
601 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
603 struct dev_context *devc;
608 if (id == SR_CONF_SAMPLERATE) {
609 devc->cur_samplerate = g_variant_get_uint64(data);
611 } else if (id == SR_CONF_LIMIT_SAMPLES) {
612 devc->limit_samples = g_variant_get_uint64(data);
621 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
629 case SR_CONF_DEVICE_OPTIONS:
630 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
631 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
633 case SR_CONF_SAMPLERATE:
634 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
635 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
636 ARRAY_SIZE(samplerates), sizeof(uint64_t));
637 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
638 *data = g_variant_builder_end(&gvb);
640 case SR_CONF_TRIGGER_TYPE:
641 *data = g_variant_new_string(TRIGGER_TYPE);
650 static int receive_data(int fd, int revents, void *cb_data)
653 struct drv_context *drvc;
661 tv.tv_sec = tv.tv_usec = 0;
662 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
667 static void abort_acquisition(struct dev_context *devc)
671 devc->num_samples = -1;
673 for (i = devc->num_transfers - 1; i >= 0; i--) {
674 if (devc->transfers[i])
675 libusb_cancel_transfer(devc->transfers[i]);
679 static void finish_acquisition(struct dev_context *devc)
681 struct sr_datafeed_packet packet;
682 struct drv_context *drvc = di->priv;
683 const struct libusb_pollfd **lupfd;
686 /* Terminate session. */
687 packet.type = SR_DF_END;
688 sr_session_send(devc->cb_data, &packet);
690 /* Remove fds from polling. */
691 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
692 for (i = 0; lupfd[i]; i++)
693 sr_source_remove(lupfd[i]->fd);
694 free(lupfd); /* NOT g_free()! */
696 devc->num_transfers = 0;
697 g_free(devc->transfers);
700 static void free_transfer(struct libusb_transfer *transfer)
702 struct dev_context *devc;
705 devc = transfer->user_data;
707 g_free(transfer->buffer);
708 transfer->buffer = NULL;
709 libusb_free_transfer(transfer);
711 for (i = 0; i < devc->num_transfers; i++) {
712 if (devc->transfers[i] == transfer) {
713 devc->transfers[i] = NULL;
718 devc->submitted_transfers--;
719 if (devc->submitted_transfers == 0)
720 finish_acquisition(devc);
723 static void resubmit_transfer(struct libusb_transfer *transfer)
727 if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS)
730 free_transfer(transfer);
731 /* TODO: Stop session? */
733 sr_err("%s: %s", __func__, libusb_error_name(ret));
736 static void receive_transfer(struct libusb_transfer *transfer)
738 gboolean packet_has_error = FALSE;
739 struct sr_datafeed_packet packet;
740 struct sr_datafeed_logic logic;
741 struct dev_context *devc;
742 int trigger_offset, i, sample_width, cur_sample_count;
743 int trigger_offset_bytes;
746 devc = transfer->user_data;
749 * If acquisition has already ended, just free any queued up
750 * transfer that come in.
752 if (devc->num_samples == -1) {
753 free_transfer(transfer);
757 sr_info("receive_transfer(): status %d received %d bytes.",
758 transfer->status, transfer->actual_length);
760 /* Save incoming transfer before reusing the transfer struct. */
761 cur_buf = transfer->buffer;
762 sample_width = devc->sample_wide ? 2 : 1;
763 cur_sample_count = transfer->actual_length / sample_width;
765 switch (transfer->status) {
766 case LIBUSB_TRANSFER_NO_DEVICE:
767 abort_acquisition(devc);
768 free_transfer(transfer);
770 case LIBUSB_TRANSFER_COMPLETED:
771 case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though. */
774 packet_has_error = TRUE;
778 if (transfer->actual_length == 0 || packet_has_error) {
779 devc->empty_transfer_count++;
780 if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
782 * The FX2 gave up. End the acquisition, the frontend
783 * will work out that the samplecount is short.
785 abort_acquisition(devc);
786 free_transfer(transfer);
788 resubmit_transfer(transfer);
792 devc->empty_transfer_count = 0;
796 if (devc->trigger_stage >= 0) {
797 for (i = 0; i < cur_sample_count; i++) {
799 const uint16_t cur_sample = devc->sample_wide ?
800 *((const uint16_t*)cur_buf + i) :
801 *((const uint8_t*)cur_buf + i);
803 if ((cur_sample & devc->trigger_mask[devc->trigger_stage]) ==
804 devc->trigger_value[devc->trigger_stage]) {
805 /* Match on this trigger stage. */
806 devc->trigger_buffer[devc->trigger_stage] = cur_sample;
807 devc->trigger_stage++;
809 if (devc->trigger_stage == NUM_TRIGGER_STAGES ||
810 devc->trigger_mask[devc->trigger_stage] == 0) {
811 /* Match on all trigger stages, we're done. */
812 trigger_offset = i + 1;
815 * TODO: Send pre-trigger buffer to session bus.
816 * Tell the frontend we hit the trigger here.
818 packet.type = SR_DF_TRIGGER;
819 packet.payload = NULL;
820 sr_session_send(devc->cb_data, &packet);
823 * Send the samples that triggered it,
824 * since we're skipping past them.
826 packet.type = SR_DF_LOGIC;
827 packet.payload = &logic;
828 logic.unitsize = sizeof(*devc->trigger_buffer);
829 logic.length = devc->trigger_stage * logic.unitsize;
830 logic.data = devc->trigger_buffer;
831 sr_session_send(devc->cb_data, &packet);
833 devc->trigger_stage = TRIGGER_FIRED;
836 } else if (devc->trigger_stage > 0) {
838 * We had a match before, but not in the next sample. However, we may
839 * have a match on this stage in the next bit -- trigger on 0001 will
840 * fail on seeing 00001, so we need to go back to stage 0 -- but at
841 * the next sample from the one that matched originally, which the
842 * counter increment at the end of the loop takes care of.
844 i -= devc->trigger_stage;
846 i = -1; /* Oops, went back past this buffer. */
847 /* Reset trigger stage. */
848 devc->trigger_stage = 0;
853 if (devc->trigger_stage == TRIGGER_FIRED) {
854 /* Send the incoming transfer to the session bus. */
855 trigger_offset_bytes = trigger_offset * sample_width;
856 packet.type = SR_DF_LOGIC;
857 packet.payload = &logic;
858 logic.length = transfer->actual_length - trigger_offset_bytes;
859 logic.unitsize = sample_width;
860 logic.data = cur_buf + trigger_offset_bytes;
861 sr_session_send(devc->cb_data, &packet);
863 devc->num_samples += cur_sample_count;
864 if (devc->limit_samples &&
865 (unsigned int)devc->num_samples > devc->limit_samples) {
866 abort_acquisition(devc);
867 free_transfer(transfer);
872 * TODO: Buffer pre-trigger data in capture
873 * ratio-sized buffer.
877 resubmit_transfer(transfer);
880 static unsigned int to_bytes_per_ms(unsigned int samplerate)
882 return samplerate / 1000;
885 static size_t get_buffer_size(struct dev_context *devc)
890 * The buffer should be large enough to hold 10ms of data and
893 s = 10 * to_bytes_per_ms(devc->cur_samplerate);
894 return (s + 511) & ~511;
897 static unsigned int get_number_of_transfers(struct dev_context *devc)
901 /* Total buffer size should be able to hold about 500ms of data. */
902 n = 500 * to_bytes_per_ms(devc->cur_samplerate) / get_buffer_size(devc);
904 if (n > NUM_SIMUL_TRANSFERS)
905 return NUM_SIMUL_TRANSFERS;
910 static unsigned int get_timeout(struct dev_context *devc)
913 unsigned int timeout;
915 total_size = get_buffer_size(devc) * get_number_of_transfers(devc);
916 timeout = total_size / to_bytes_per_ms(devc->cur_samplerate);
917 return timeout + timeout / 4; /* Leave a headroom of 25% percent. */
920 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
923 struct dev_context *devc;
924 struct drv_context *drvc;
925 struct sr_usb_dev_inst *usb;
926 struct libusb_transfer *transfer;
927 const struct libusb_pollfd **lupfd;
928 unsigned int i, timeout, num_transfers;
937 if (devc->submitted_transfers != 0)
940 if (configure_probes(sdi) != SR_OK) {
941 sr_err("Failed to configure probes.");
945 devc->cb_data = cb_data;
946 devc->num_samples = 0;
947 devc->empty_transfer_count = 0;
949 timeout = get_timeout(devc);
950 num_transfers = get_number_of_transfers(devc);
951 size = get_buffer_size(devc);
953 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
954 if (!devc->transfers) {
955 sr_err("USB transfers malloc failed.");
956 return SR_ERR_MALLOC;
959 devc->num_transfers = num_transfers;
961 for (i = 0; i < num_transfers; i++) {
962 if (!(buf = g_try_malloc(size))) {
963 sr_err("USB transfer buffer malloc failed.");
964 return SR_ERR_MALLOC;
966 transfer = libusb_alloc_transfer(0);
967 libusb_fill_bulk_transfer(transfer, usb->devhdl,
968 2 | LIBUSB_ENDPOINT_IN, buf, size,
969 receive_transfer, devc, timeout);
970 if ((ret = libusb_submit_transfer(transfer)) != 0) {
971 sr_err("Failed to submit transfer: %s.",
972 libusb_error_name(ret));
973 libusb_free_transfer(transfer);
975 abort_acquisition(devc);
978 devc->transfers[i] = transfer;
979 devc->submitted_transfers++;
982 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
983 for (i = 0; lupfd[i]; i++)
984 sr_source_add(lupfd[i]->fd, lupfd[i]->events,
985 timeout, receive_data, NULL);
986 free(lupfd); /* NOT g_free()! */
988 /* Send header packet to the session bus. */
989 std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
991 if ((ret = command_start_acquisition (usb->devhdl,
992 devc->cur_samplerate, devc->sample_wide)) != SR_OK) {
993 abort_acquisition(devc);
1000 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
1001 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
1005 abort_acquisition(sdi->priv);
1010 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
1012 .longname = "fx2lafw (generic driver for FX2 based LAs)",
1015 .cleanup = hw_cleanup,
1017 .dev_list = hw_dev_list,
1018 .dev_clear = clear_instances,
1019 .config_get = config_get,
1020 .config_set = config_set,
1021 .config_list = config_list,
1022 .dev_open = hw_dev_open,
1023 .dev_close = hw_dev_close,
1024 .dev_acquisition_start = hw_dev_acquisition_start,
1025 .dev_acquisition_stop = hw_dev_acquisition_stop,