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 libusb_device_descriptor des;
172 struct dev_context *devc;
173 struct drv_context *drvc;
174 struct version_info vi;
175 int ret, skip, i, device_count;
181 if (sdi->status == SR_ST_ACTIVE)
182 /* Device is already in use. */
186 device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
187 if (device_count < 0) {
188 sr_err("Failed to get device list: %s.",
189 libusb_error_name(device_count));
193 for (i = 0; i < device_count; i++) {
194 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
195 sr_err("Failed to get device descriptor: %s.",
196 libusb_error_name(ret));
200 if (des.idVendor != devc->profile->vid
201 || des.idProduct != devc->profile->pid)
204 if (sdi->status == SR_ST_INITIALIZING) {
205 if (skip != sdi->index) {
206 /* Skip devices of this type that aren't the one we want. */
210 } else if (sdi->status == SR_ST_INACTIVE) {
212 * This device is fully enumerated, so we need to find
213 * this device by vendor, product, bus and address.
215 if (libusb_get_bus_number(devlist[i]) != devc->usb->bus
216 || libusb_get_device_address(devlist[i]) != devc->usb->address)
217 /* This is not the one. */
221 if (!(ret = libusb_open(devlist[i], &devc->usb->devhdl))) {
222 if (devc->usb->address == 0xff)
224 * First time we touch this device after FW
225 * upload, so we don't know the address yet.
227 devc->usb->address = libusb_get_device_address(devlist[i]);
229 sr_err("Failed to open device: %s.",
230 libusb_error_name(ret));
234 ret = command_get_fw_version(devc->usb->devhdl, &vi);
236 sr_err("Failed to get firmware version.");
240 ret = command_get_revid_version(devc->usb->devhdl, &revid);
242 sr_err("Failed to get REVID.");
247 * Changes in major version mean incompatible/API changes, so
248 * bail out if we encounter an incompatible version.
249 * Different minor versions are OK, they should be compatible.
251 if (vi.major != FX2LAFW_REQUIRED_VERSION_MAJOR) {
252 sr_err("Expected firmware version %d.x, "
253 "got %d.%d.", FX2LAFW_REQUIRED_VERSION_MAJOR,
258 sdi->status = SR_ST_ACTIVE;
259 sr_info("Opened device %d on %d.%d, "
260 "interface %d, firmware %d.%d.",
261 sdi->index, devc->usb->bus, devc->usb->address,
262 USB_INTERFACE, vi.major, vi.minor);
264 sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.",
265 revid, (revid != 1) ? " (FX2)" : "A (FX2LP)");
269 libusb_free_device_list(devlist, 1);
271 if (sdi->status != SR_ST_ACTIVE)
277 static int configure_probes(const struct sr_dev_inst *sdi)
279 struct dev_context *devc;
280 struct sr_probe *probe;
282 int probe_bit, stage, i;
286 for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
287 devc->trigger_mask[i] = 0;
288 devc->trigger_value[i] = 0;
292 for (l = sdi->probes; l; l = l->next) {
293 probe = (struct sr_probe *)l->data;
294 if (probe->enabled == FALSE)
297 if (probe->index > 7)
298 devc->sample_wide = TRUE;
300 probe_bit = 1 << (probe->index);
301 if (!(probe->trigger))
305 for (tc = probe->trigger; *tc; tc++) {
306 devc->trigger_mask[stage] |= probe_bit;
308 devc->trigger_value[stage] |= probe_bit;
310 if (stage > NUM_TRIGGER_STAGES)
317 * We didn't configure any triggers, make sure acquisition
318 * doesn't wait for any.
320 devc->trigger_stage = TRIGGER_FIRED;
322 devc->trigger_stage = 0;
327 static struct dev_context *fx2lafw_dev_new(void)
329 struct dev_context *devc;
331 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
332 sr_err("Device context malloc failed.");
336 devc->trigger_stage = TRIGGER_FIRED;
341 static int clear_instances(void)
344 struct sr_dev_inst *sdi;
345 struct drv_context *drvc;
346 struct dev_context *devc;
351 for (l = drvc->instances; l; l = l->next) {
352 if (!(sdi = l->data)) {
353 /* Log error, but continue cleaning up the rest. */
354 sr_err("sdi was NULL, continuing.");
358 if (!(devc = sdi->priv)) {
359 /* Log error, but continue cleaning up the rest. */
360 sr_err("sdi->priv was NULL, continuing.");
365 sr_usb_dev_inst_free(devc->usb);
367 sr_dev_inst_free(sdi);
370 g_slist_free(drvc->instances);
371 drvc->instances = NULL;
376 static int hw_init(struct sr_context *sr_ctx)
378 return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
381 static GSList *hw_scan(GSList *options)
383 struct drv_context *drvc;
384 struct dev_context *devc;
385 struct sr_dev_inst *sdi;
386 struct sr_usb_dev_inst *usb;
387 struct sr_probe *probe;
388 struct sr_config *src;
389 const struct fx2lafw_profile *prof;
390 GSList *l, *devices, *conn_devices;
391 struct libusb_device_descriptor des;
392 libusb_device **devlist;
393 int devcnt, num_logic_probes, ret, i, j;
400 /* This scan always invalidates any previous scans. */
404 for (l = options; l; l = l->next) {
408 conn = g_variant_get_string(src->data, NULL);
413 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
417 /* Find all fx2lafw compatible devices and upload firmware to them. */
419 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
420 for (i = 0; devlist[i]; i++) {
423 for (l = conn_devices; l; l = l->next) {
425 if (usb->bus == libusb_get_bus_number(devlist[i])
426 && usb->address == libusb_get_device_address(devlist[i]))
430 /* This device matched none of the ones that
431 * matched the conn specification. */
435 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
436 sr_warn("Failed to get device descriptor: %s.",
437 libusb_error_name(ret));
442 for (j = 0; supported_fx2[j].vid; j++) {
443 if (des.idVendor == supported_fx2[j].vid &&
444 des.idProduct == supported_fx2[j].pid) {
445 prof = &supported_fx2[j];
449 /* Skip if the device was not found. */
453 devcnt = g_slist_length(drvc->instances);
454 sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
455 prof->vendor, prof->model, prof->model_version);
460 /* Fill in probelist according to this device's profile. */
461 num_logic_probes = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
462 for (j = 0; j < num_logic_probes; j++) {
463 if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
466 sdi->probes = g_slist_append(sdi->probes, probe);
469 devc = fx2lafw_dev_new();
470 devc->profile = prof;
472 drvc->instances = g_slist_append(drvc->instances, sdi);
473 devices = g_slist_append(devices, sdi);
475 if (check_conf_profile(devlist[i])) {
476 /* Already has the firmware, so fix the new address. */
477 sr_dbg("Found an fx2lafw device.");
478 sdi->status = SR_ST_INACTIVE;
479 devc->usb = sr_usb_dev_inst_new
480 (libusb_get_bus_number(devlist[i]),
481 libusb_get_device_address(devlist[i]), NULL);
483 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
484 prof->firmware) == SR_OK)
485 /* Store when this device's FW was updated. */
486 devc->fw_updated = g_get_monotonic_time();
488 sr_err("Firmware upload failed for "
489 "device %d.", devcnt);
490 devc->usb = sr_usb_dev_inst_new
491 (libusb_get_bus_number(devlist[i]), 0xff, NULL);
494 libusb_free_device_list(devlist, 1);
499 static GSList *hw_dev_list(void)
501 return ((struct drv_context *)(di->priv))->instances;
504 static int hw_dev_open(struct sr_dev_inst *sdi)
506 struct dev_context *devc;
508 int64_t timediff_us, timediff_ms;
513 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
514 * milliseconds for the FX2 to renumerate.
517 if (devc->fw_updated > 0) {
518 sr_info("Waiting for device to reset.");
519 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
520 g_usleep(300 * 1000);
522 while (timediff_ms < MAX_RENUM_DELAY_MS) {
523 if ((ret = fx2lafw_dev_open(sdi)) == SR_OK)
525 g_usleep(100 * 1000);
527 timediff_us = g_get_monotonic_time() - devc->fw_updated;
528 timediff_ms = timediff_us / 1000;
529 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
532 sr_err("Device failed to renumerate.");
535 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
537 sr_info("Firmware upload was not needed.");
538 ret = fx2lafw_dev_open(sdi);
542 sr_err("Unable to open device.");
548 ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
551 case LIBUSB_ERROR_BUSY:
552 sr_err("Unable to claim USB interface. Another "
553 "program or driver has already claimed it.");
555 case LIBUSB_ERROR_NO_DEVICE:
556 sr_err("Device has been disconnected.");
559 sr_err("Unable to claim interface: %s.",
560 libusb_error_name(ret));
567 if (devc->cur_samplerate == 0) {
568 /* Samplerate hasn't been set; default to the slowest one. */
569 devc->cur_samplerate = samplerates[0];
575 static int hw_dev_close(struct sr_dev_inst *sdi)
577 struct dev_context *devc;
581 if (devc->usb->devhdl == NULL)
584 sr_info("Closing device %d on %d.%d, interface %d.",
585 sdi->index, devc->usb->bus, devc->usb->address, USB_INTERFACE);
586 libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
587 libusb_close(devc->usb->devhdl);
588 devc->usb->devhdl = NULL;
589 sdi->status = SR_ST_INACTIVE;
594 static int hw_cleanup(void)
596 struct drv_context *drvc;
599 if (!(drvc = di->priv))
602 ret = clear_instances();
610 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
612 struct dev_context *devc;
615 case SR_CONF_SAMPLERATE:
618 *data = g_variant_new_uint64(devc->cur_samplerate);
629 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
631 struct dev_context *devc;
636 if (id == SR_CONF_SAMPLERATE) {
637 devc->cur_samplerate = g_variant_get_uint64(data);
639 } else if (id == SR_CONF_LIMIT_SAMPLES) {
640 devc->limit_samples = g_variant_get_uint64(data);
649 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
657 case SR_CONF_DEVICE_OPTIONS:
658 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
659 hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
661 case SR_CONF_SAMPLERATE:
662 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
663 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
664 ARRAY_SIZE(samplerates), sizeof(uint64_t));
665 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
666 *data = g_variant_builder_end(&gvb);
668 case SR_CONF_TRIGGER_TYPE:
669 *data = g_variant_new_string(TRIGGER_TYPE);
678 static int receive_data(int fd, int revents, void *cb_data)
681 struct drv_context *drvc;
689 tv.tv_sec = tv.tv_usec = 0;
690 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
695 static void abort_acquisition(struct dev_context *devc)
699 devc->num_samples = -1;
701 for (i = devc->num_transfers - 1; i >= 0; i--) {
702 if (devc->transfers[i])
703 libusb_cancel_transfer(devc->transfers[i]);
707 static void finish_acquisition(struct dev_context *devc)
709 struct sr_datafeed_packet packet;
710 struct drv_context *drvc = di->priv;
711 const struct libusb_pollfd **lupfd;
714 /* Terminate session. */
715 packet.type = SR_DF_END;
716 sr_session_send(devc->cb_data, &packet);
718 /* Remove fds from polling. */
719 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
720 for (i = 0; lupfd[i]; i++)
721 sr_source_remove(lupfd[i]->fd);
722 free(lupfd); /* NOT g_free()! */
724 devc->num_transfers = 0;
725 g_free(devc->transfers);
728 static void free_transfer(struct libusb_transfer *transfer)
730 struct dev_context *devc;
733 devc = transfer->user_data;
735 g_free(transfer->buffer);
736 transfer->buffer = NULL;
737 libusb_free_transfer(transfer);
739 for (i = 0; i < devc->num_transfers; i++) {
740 if (devc->transfers[i] == transfer) {
741 devc->transfers[i] = NULL;
746 devc->submitted_transfers--;
747 if (devc->submitted_transfers == 0)
748 finish_acquisition(devc);
751 static void resubmit_transfer(struct libusb_transfer *transfer)
755 if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS)
758 free_transfer(transfer);
759 /* TODO: Stop session? */
761 sr_err("%s: %s", __func__, libusb_error_name(ret));
764 static void receive_transfer(struct libusb_transfer *transfer)
766 gboolean packet_has_error = FALSE;
767 struct sr_datafeed_packet packet;
768 struct sr_datafeed_logic logic;
769 struct dev_context *devc;
770 int trigger_offset, i, sample_width, cur_sample_count;
771 int trigger_offset_bytes;
774 devc = transfer->user_data;
777 * If acquisition has already ended, just free any queued up
778 * transfer that come in.
780 if (devc->num_samples == -1) {
781 free_transfer(transfer);
785 sr_info("receive_transfer(): status %d received %d bytes.",
786 transfer->status, transfer->actual_length);
788 /* Save incoming transfer before reusing the transfer struct. */
789 cur_buf = transfer->buffer;
790 sample_width = devc->sample_wide ? 2 : 1;
791 cur_sample_count = transfer->actual_length / sample_width;
793 switch (transfer->status) {
794 case LIBUSB_TRANSFER_NO_DEVICE:
795 abort_acquisition(devc);
796 free_transfer(transfer);
798 case LIBUSB_TRANSFER_COMPLETED:
799 case LIBUSB_TRANSFER_TIMED_OUT: /* We may have received some data though. */
802 packet_has_error = TRUE;
806 if (transfer->actual_length == 0 || packet_has_error) {
807 devc->empty_transfer_count++;
808 if (devc->empty_transfer_count > MAX_EMPTY_TRANSFERS) {
810 * The FX2 gave up. End the acquisition, the frontend
811 * will work out that the samplecount is short.
813 abort_acquisition(devc);
814 free_transfer(transfer);
816 resubmit_transfer(transfer);
820 devc->empty_transfer_count = 0;
824 if (devc->trigger_stage >= 0) {
825 for (i = 0; i < cur_sample_count; i++) {
827 const uint16_t cur_sample = devc->sample_wide ?
828 *((const uint16_t*)cur_buf + i) :
829 *((const uint8_t*)cur_buf + i);
831 if ((cur_sample & devc->trigger_mask[devc->trigger_stage]) ==
832 devc->trigger_value[devc->trigger_stage]) {
833 /* Match on this trigger stage. */
834 devc->trigger_buffer[devc->trigger_stage] = cur_sample;
835 devc->trigger_stage++;
837 if (devc->trigger_stage == NUM_TRIGGER_STAGES ||
838 devc->trigger_mask[devc->trigger_stage] == 0) {
839 /* Match on all trigger stages, we're done. */
840 trigger_offset = i + 1;
843 * TODO: Send pre-trigger buffer to session bus.
844 * Tell the frontend we hit the trigger here.
846 packet.type = SR_DF_TRIGGER;
847 packet.payload = NULL;
848 sr_session_send(devc->cb_data, &packet);
851 * Send the samples that triggered it,
852 * since we're skipping past them.
854 packet.type = SR_DF_LOGIC;
855 packet.payload = &logic;
856 logic.unitsize = sizeof(*devc->trigger_buffer);
857 logic.length = devc->trigger_stage * logic.unitsize;
858 logic.data = devc->trigger_buffer;
859 sr_session_send(devc->cb_data, &packet);
861 devc->trigger_stage = TRIGGER_FIRED;
864 } else if (devc->trigger_stage > 0) {
866 * We had a match before, but not in the next sample. However, we may
867 * have a match on this stage in the next bit -- trigger on 0001 will
868 * fail on seeing 00001, so we need to go back to stage 0 -- but at
869 * the next sample from the one that matched originally, which the
870 * counter increment at the end of the loop takes care of.
872 i -= devc->trigger_stage;
874 i = -1; /* Oops, went back past this buffer. */
875 /* Reset trigger stage. */
876 devc->trigger_stage = 0;
881 if (devc->trigger_stage == TRIGGER_FIRED) {
882 /* Send the incoming transfer to the session bus. */
883 trigger_offset_bytes = trigger_offset * sample_width;
884 packet.type = SR_DF_LOGIC;
885 packet.payload = &logic;
886 logic.length = transfer->actual_length - trigger_offset_bytes;
887 logic.unitsize = sample_width;
888 logic.data = cur_buf + trigger_offset_bytes;
889 sr_session_send(devc->cb_data, &packet);
891 devc->num_samples += cur_sample_count;
892 if (devc->limit_samples &&
893 (unsigned int)devc->num_samples > devc->limit_samples) {
894 abort_acquisition(devc);
895 free_transfer(transfer);
900 * TODO: Buffer pre-trigger data in capture
901 * ratio-sized buffer.
905 resubmit_transfer(transfer);
908 static unsigned int to_bytes_per_ms(unsigned int samplerate)
910 return samplerate / 1000;
913 static size_t get_buffer_size(struct dev_context *devc)
918 * The buffer should be large enough to hold 10ms of data and
921 s = 10 * to_bytes_per_ms(devc->cur_samplerate);
922 return (s + 511) & ~511;
925 static unsigned int get_number_of_transfers(struct dev_context *devc)
929 /* Total buffer size should be able to hold about 500ms of data. */
930 n = 500 * to_bytes_per_ms(devc->cur_samplerate) / get_buffer_size(devc);
932 if (n > NUM_SIMUL_TRANSFERS)
933 return NUM_SIMUL_TRANSFERS;
938 static unsigned int get_timeout(struct dev_context *devc)
941 unsigned int timeout;
943 total_size = get_buffer_size(devc) * get_number_of_transfers(devc);
944 timeout = total_size / to_bytes_per_ms(devc->cur_samplerate);
945 return timeout + timeout / 4; /* Leave a headroom of 25% percent. */
948 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
951 struct dev_context *devc;
952 struct drv_context *drvc;
953 struct libusb_transfer *transfer;
954 const struct libusb_pollfd **lupfd;
955 unsigned int i, timeout, num_transfers;
963 if (devc->submitted_transfers != 0)
966 if (configure_probes(sdi) != SR_OK) {
967 sr_err("Failed to configure probes.");
971 devc->cb_data = cb_data;
972 devc->num_samples = 0;
973 devc->empty_transfer_count = 0;
975 timeout = get_timeout(devc);
976 num_transfers = get_number_of_transfers(devc);
977 size = get_buffer_size(devc);
979 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
980 if (!devc->transfers) {
981 sr_err("USB transfers malloc failed.");
982 return SR_ERR_MALLOC;
985 devc->num_transfers = num_transfers;
987 for (i = 0; i < num_transfers; i++) {
988 if (!(buf = g_try_malloc(size))) {
989 sr_err("USB transfer buffer malloc failed.");
990 return SR_ERR_MALLOC;
992 transfer = libusb_alloc_transfer(0);
993 libusb_fill_bulk_transfer(transfer, devc->usb->devhdl,
994 2 | LIBUSB_ENDPOINT_IN, buf, size,
995 receive_transfer, devc, timeout);
996 if ((ret = libusb_submit_transfer(transfer)) != 0) {
997 sr_err("Failed to submit transfer: %s.",
998 libusb_error_name(ret));
999 libusb_free_transfer(transfer);
1001 abort_acquisition(devc);
1004 devc->transfers[i] = transfer;
1005 devc->submitted_transfers++;
1008 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
1009 for (i = 0; lupfd[i]; i++)
1010 sr_source_add(lupfd[i]->fd, lupfd[i]->events,
1011 timeout, receive_data, NULL);
1012 free(lupfd); /* NOT g_free()! */
1014 /* Send header packet to the session bus. */
1015 std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
1017 if ((ret = command_start_acquisition(devc->usb->devhdl,
1018 devc->cur_samplerate, devc->sample_wide)) != SR_OK) {
1019 abort_acquisition(devc);
1026 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
1027 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
1031 abort_acquisition(sdi->priv);
1036 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
1038 .longname = "fx2lafw (generic driver for FX2 based LAs)",
1041 .cleanup = hw_cleanup,
1043 .dev_list = hw_dev_list,
1044 .dev_clear = clear_instances,
1045 .config_get = config_get,
1046 .config_set = config_set,
1047 .config_list = config_list,
1048 .dev_open = hw_dev_open,
1049 .dev_close = hw_dev_close,
1050 .dev_acquisition_start = hw_dev_acquisition_start,
1051 .dev_acquisition_stop = hw_dev_acquisition_stop,